This book provides a comprehensive review of barcodes for mobile devices, in a matter of technology evolution, systems and applications overview, barcode design specifics and also the prototype evaluation. To the reviewer's knowledge, this is the first book covering the subject of barcode technology usage for mobile devices, although there was a growing interest of research and development community for these topics from the mid 1990's till today. The book is organized as follows: the introductory chapter provides an overview of barcode technology, while the next one describes the technology evolution, with history outlines, given barcode systems, and emerging technologies that affected the development of barcodes. Chapter 3 presents two-dimensional barcode symbologies used on mobile phones, like QR Code, Data Matrix, etc. Chapter 3 provides a driver for evolution of barcode applications, presenting 2D barcode as a tool for ubiquitous computing, while chapter 4 describes the mechanisms for providing barcode robustness, like error detection and/or correction techniques, data arrangement and symbol structuring techniques. Chapters 6 and 7 provide the development and evaluation of a prototype color 2D barcode, based on Mobile Multi-Color Composite (MMCC) encoding algorithm. Finally, there is also a color plate section that can be found between pp. 182 and 183, necessary for showing and analyzing the colored barcodes. This is practically a " cookbook " for developers of new and improved barcodes, providing a step-by-step lessons how to shape a 2D symbology, design a finder pattern, come-up with an algorithm for encoding data, and how to evaluate the whole design, by measuring the first-read rates (FRR), peak-to-signal ration (PTSR), etc. It provides a necessary in-depth on signal processing and image analysis, while leading the reader towards the final goal – the development of a new or improved 2D barcode. What every system developer, telecom software engineer and computer scientist dealing with barcodes for mobile devices may also find useful in this book is its appendices. Along with the barcode applications and history timeline given, the appendices provide data capacity and error correction capability values for


Previous studies documented a large positive effect of private equity ownership on operating performance between 1980 and 1990, while more recent studies such as Guo, Hotchkiss and Song (2011) and Cohn, Mills and Towery (2014) document none or a very modest increase in operating performance. We revisit the evidence on post LBO performance and offer an alternative explanation for the varied and time-inconsistent results found in the literature: The effect of accounting for LBO transactions and its change over time. Using hand-collected financial statements for 183 LBO targets, we illustrate how previously used proxies for operating performance fail to consider all of the accounting changes, accompanying these complex transactions. Next, we reproduce the results of previous studies. However, once proxies are modified slightly to account for the LBO process, we find no robust evidence of post-buyout improvements compared to industry peers, regardless of the time period of the study. Finally, we document the change in accounting practices over time and find that it coincides with the decline in operating performance as measured with traditional proxies.


We study dilute solutions of poly(2,3-diphenyl phenylene vinylene) with hexyl (DP6-PPV) and decyl (DP10-PPV) side chains in two solvents, chloroform and toluene. For this purpose, atomistic and coarse-grained models are parametrized using quantum-chemical calculations and structure-based coarse-graining, respectively. Our simulations indicate that the difference in the aggregation behavior of two derivatives can not be rationalized just in terms of the greater steric hindrance imposed by the longer side chains of DP10-PPV. The coarse-grained model describes qualitatively the DP10-PPV derivative in chloroform, where aggregation does not occur. Although the computed structure factors for this system qualitatively agree with experiments for low concentrations, the calculated persistence length is bigger than the one experimentally reported, hinting at the presence of defects in polymer chains.


Association Between Data Sources and US Food and Drug Administration Drug Safety Communications Drug safety communications (DSCs) are the primary tool for the US Food and Drug Administration (FDA) to communicate important new postmarketing safety information to patients and health care professionals.1 Drug safety communications are issued by the FDA for more than one-quarter of new drug and biologic approvals.2 There are known inconsistencies in issuing DSCs across national regulators.3 Less is known about the information source that typically serves as the basis of the initial safety signals that lead to DSCs, such as spontaneous reports aggregated through the FDA's Adverse Event Reporting System (FAERS),4 results from randomized clinical trials (RCTs), or observational studies. Our objective was to describe the sources of the initial safety signals that lead to DSCs and examine their associations with drug characteristics and subsequent label changes.


In his work, "Nation, State, and Economy" (1919), Ludwig von Mises claims that the idea of liberalism starts with the freedom of the individual and it rejects all rules of some persons over others. This paper aims to illustrate an opposite direction, deprecating the 18th century colonial practices which have gradually tainted the pacifistic principle of liberalism with the oppressive, imperialistic goals, of the most powerful states. We focus on the British East India Company, which dominated the East Indies. We find that, under the cover of free trading, the British Superpower has often used military intrusion to acquire territories, to rule resources and, through this, to exercise power over the native population.


Spectroscopic properties of Ce-doped yttrium orthoaluminate (Ce:YAIO, or Ce:YAP) crystals grown by temperature gradient technique (TGT) were investigated, and the effects of the growth conditions on the properties were analyzed. Methods of optical absorption (OA), photoluminescence (PL), photoluminescence decay (PLD), X-ray excited luminescence (XL) and cathodeluminescence (CL) were used in these investigations. The results showed that the absorption band peak at 202,394 and 532 nm originated from F and F' color center induced by the weak reducing growth atmosphere, green emission band near 500 nm derived from Ce3'-Ce3' pairs and band at 650 850 nm from some unintentional impurity in crystals.


Objective: The high prevalence of Type 2 diabetes mellitus (T2D) all over the world cause a high demand of searching for new antidiabetic drugs. The present study aims to identify the consumption of three new classes of antidiabetic drugs (DPP-4 inhibitors, GLP-1 receptor agonists, and SGLT-2 inhibitors), analyzing the use of these drugs prescribed for the treatment of T2D. In this retrospective observational study, we analyzed consumption data for the period 2015–2020, obtained from National Health Insurance Fund (NHIF) database only. Results: The NHIF expenditure of DPP-4 inhibitors, GLP-1 receptor agonists, and SGLT-2 inhibitors in Bulgaria for the period 2015-2020 is increasing. Although last introduced into clinical practice, SGLT-2 inhibitors were preferred by clinicians, over GLP-1 agonists, during the considered period. Conclusions: DPP-4 inhibitors, GLP-1 receptor agonists, and SGLT-2 inhibitors consumption in Bulgaria indicates progressive changes in the prescription of antidiabetic drugs. We have highlighted the market uptake of drugs approved during the last 15 years. To ensure the optimal benefits to the patient, we feel it is necessary to implement guidance to assist prescribers in choosing the most appropriate therapy based on drug and patient characteristics. Further monitoring of the effect of the pharmacotherapeutic changes on additional cardiovascular and renal benefits of these drugs is needed.


The problem of rapid optimal coverage through the distribution a team of robots or static sensors via means of aerial drop is the topic of this work. Considering a nonholonomic (fixed-wing) aerial robot that corresponds to the carrier of a set of small holonomic (rotorcraft) aerial robots as well as static modules that are all equipped with a camera sensor, we address the problem of selecting optimal aerial drop times and configurations while the motion capabilities of the small aerial robots are also exploited to further survey their area of responsibility until they hit the ground. The overall solution framework consists of lightweight path-planning algorithms that can run on virtually any processing unit that might be available on-board. Evaluation studies in simulation as well as a set of elementary experiments that prove the validity of important assumptions illustrate the potential of the approach.


New results and perspectives precipitate from the (modified as) Kaluza ansatz 2 (KA2), whereby, instead of appending $n$ Planck-scale (${\rm L_o}$) compact SL dimensions to ordinary 4D spacetime, one augments $n$ such dimensions by 3 large ones. By KA2, the fundamental role of gravity in the dynamics of vacuum geometry is being conceded to the remaining fundamental interactions. The ground state in KA2 is of the form $\bar{\cal M}^{n+4}=\bar{\cal C}^{n+1}\times\IR^3$, where the static (averaged-out over scales ${\rm L}>>{\rm L_o}$) $\bar{\cal C}^{n+1}$ carries {\em effective torsion} as relic of the deeper vacuum dynamics at Planck scale. For the simplest non-trivial implementation of KA2, the Bianchi IX subclass of SU(2)-invariant ${\cal B}^4_{\rm IX}$ provides the $\bar{\cal C}^5=\bar{\cal B}^4_{\rm M}\times S^1$, with the $S^1$ coming from 'augmentability', a complement to compactification. The classical action involves (i) the gravitational and EW sectors in elegant {\em hierarchy}, (ii) the {\em higgsless} emergence and full calculability of the EW gauge bosons masses and (iii) gravity as a necessarily effective field, hence non-quantizable. A conjectured ${\cal C}^{n+1}$ with $n\leq 7$ (to adjoin the strong interaction) toward a standard model 2, might also offer novel perspectives for supergravity.


As is well known, a small compressive disturbance in an elastic gas grows into a shock wave in finite time. If the gas is viscoelastic or has internal degrees of freedom, this result is no longer true unless the initial amplitude of the disturbance is larger than a critical amplitude. This article investigates the effect of diffusion on the growth and decay properties of small disturbances in a mixture of elastic gases. It is shown that a critical amplitude exists for the mixture. Thus, diffusion can be thought of as having a stabilizing effect in that not all compressive disturbances will grow into shock waves.


As lots of positive researches show,enterprise cluster is of inherent advantages of obtaining competitive advantages,such as the external economic effect,transaction cost,and so on.So,learning from the model of enterprise cluster will produce a great prospect for the development of China's middle and small sized enterprises.


Changes in haematocrit value in rabbits subjected to pneumothorax were studied. Significant increases and decreases were noted following pneumothorax and desufflation respectively. These are attributed to modifications of lung and systemic haemodynamics, resulting in diminished reflux to the heart and a consequent increase in capillary hydrostatic pressure; the latter provides the premisses for inspissation of the blood due to displacement of water towards the interstitial space.


In order to estimate octupole-induced [ital E]1 strength in very deformed nuclei we calculate their intrinsic dipole moments within the shell correction method. We use the formula for the macroscopic part of the dipole moment derived by Dorso, Myers, and Swiatecki, however, without approximation limiting its validity to small deformations. We obtain rather large dipole moments in superdeformed Hg and Pb nuclei, in agreement with recent Hartree-Fock calculations. This points to the possibility that in these nuclei interband [ital E]1 transitions may be detectable in spite of enormous competition of superdeformed intraband [ital E]2 transitions. We give also estimates for dipole moments of even more deformed systems.


The acne app offers a free and immediate analysis of acne type and severity; develops an individualized acne control plan; and monitors users' progress. It aims to help consumers diagnose, treat, manage and prevent acne.


Short helix pitch (p 0 = 0.45 μ m) ferroelectric liquid crystal (FLC) mixture possessing high birefringence (Δ n ≥ 0.2) under the action of applied voltage not more than 5 V provides four electrically switched birefringent colors: blue, green, yellow and red, while before only two [1] or three [2] colors were switched. Contrast ratio of birefringence colors were measured dependently on the driving voltage frequency. A possible application in field sequential color display where fast switching time is required has been proposed.


This study aims to know the process and result of the lesson toimprove cognitive development through fishing games for group B children ofkindergarten Miftahul Huda Cilacap District.This research was a kind of classroom action research.This study used the Kemmis and Taggart's design.Each cycle consists of four phases: planning, action, observation, and reflection. The research subjects are group B children of Kindergarten Miftahul Huda. The data collection techniques included observation, interviews, and documentation study. The collected data were analyzed using descriptive qualitative and quantitative methods. The results of the study show that the cognitive development of child before the action is still in the category of beginning to developing, that is 58,55%; the results first cycle reaches69,62% in the category of developing and the second cyclereaches 80,99% in a category of highly developed; the use of fishing games has a very good impact on cognitive development shown by the cognitive development of the children, which is higher after the action compared to that before the action.


Distributed voting is a vital problem in the reliable computing. N modules execute the same task in a system with N Modular Redundant (NMR), hence it is spontaneous and necessary for them to vote on the current condition periodically so as to exchange the information. The thesis comes up with an algorithm used in NMR system, which is able to reduce the communication complexity drastically by the employment of error correcting codes. Moreover, the performance may be further improved provided the suitable codes and parameters that could match the possibility of computing errors better.


Solving the ecological problems must be associated with city development. The building and development of an ecocity needs specific markets for ecoproducts, needs ecological aggregation of industries and the mode of greenblockeconomy developed from this aggregation. The construction and development of green shops and stores, which is specialized selling ecological products and techniques, is an effective approach solving the problems of supply-and-demand in the course of ecocity development. The greenblockeconomy mode which is formed by the integration of green shops and regional eco-industries, is impetus for the sustainable development of the region.


During the course of a seismic survey across a region characterized by extremely high Poisson's ratios we observed an unusual phase. This phase arrives between the direct P-wave and ground roll and has a significant amplitude at short offsets. Numerical modelling indicates that it is a non-geometric shear wave generated by the interaction of the explosive seismic source with the free surface. For the processing and interpretation of very shallow seismic data, the presence of such non-geometric waves causes problems, because the additional complexity in the seismic record may be interpreted in terms of structural features in the subsurface. Another interesting phenomenon in high Poisson's ratio environments is the dramatic rotation of the P-wave polarization at the free surface. This effect has to be taken into account when analysing multi-component recordings.


The LU decomposition is an essential element used in many linear algebra applications. Furthermore, it is used in LINPACK to benchmark the performance of modern multi-core processor environments. These processors offer a large memory hierarchy including multiple registers and various levels of cache. Registers or L1 data cache are small in size but also very fast. The L2 or L3 cache memory is usually shared among other cores and larger but slower. For the LU decomposition, the latency of fetching data from the main memory to the registers to perform a calculation also depends on the input matrix's memory access pattern. Here, we look at the block factorization algorithm, where the LU decomposition performance depends on the performance of the matrix multiplication. In both cases, the LU decomposition and the matrix multiplication, such a matrix is traversed by three nested loops. In this paper, we propose to traverse such loops in an order defined by a space-filling curve. This traversal dramatically improves data locality and offers effective exploitation of the memory hierarchy. Besides the canonical (or line-by-line) access pattern, we demonstrate the traversal in Hilbert-, Peano and Morton order. Our extensive experiments show that the Morton order (or Z -order) and the inverse Morton order (or И-order) have a better runtime performance compared to the others.


Let An(p) (p,n∈N = {1,2,3,…} denote the class of functions of the form f(z) = zp + ap+nzp+n +…that are analytic in the unit disk E = {z : |z| 1}. By using the method of differential subordinations we give some sufficient conditions for a function f(z)∈An(p) to be p-valently starlike or strong starlike.


An analysis of legal and economic factors suggests the inherent difficulties in fostering cooperation among the national film industries of Western Europe.


We develop an analytical expression for probability density function of speckle intensity on receiving aperture and express integral speckle intensity variance when receive aperture area is s. Analytical and numerical results of speckle number are given for rectangular and circular diffuser apertures. Laser radar intensity image are simulated in different speckle numbers on receive aperture. The results shows that the image is becoming more and more clearly as speckle numbers increase by the increasing of receiving aperture and decrease of the light beam waist.


Phthalate esters have possible effects on the endocrine system. Di-n-butyl phthalate (DBP) is one of the most commonly used phthalic acid esters (PAEs). It is extensively used as a plasticizer in elastomers, as a solvent for printing inks and resins, and as a textile lubricating agnet. It is also present in the formulations of various cosmetic products. DBP has been identified as a reproductive toxicant in several animal species and also known as a endocrine disruptor. The objective of this study was to investigate the effect of DBP on developmental immune function using rat pups as experimental animals. Timed-bred pregnant SD rats were orally dosed with 0, 250, 500, or 750 mg DBP/kg body weight once a day from gestational day (GD) 5 to 18 and postpartum day (PD) 3 to 18. On PD22, the dams and their pups were euthanized and examined for alteration in parameters associated to immune funcion. The results showed no significant changes in body weight, thymus weight, thymus and spleen cellutarities, the polyclonal activation responses of splenocyte with ConA and LPS, and also the distribution of arterial blood cells and thymocyte subsets in both rat dams and pups. However DBP exposure on rat dams resulted in increases of liver weights of dams and their pups except 750 mg DBP/kg, and body and spleen weights in pups except 750 mg DBP/kg. On the other hands, distribution rates of CD8^+ T cells at 500mg DBP/kg and B cells at 750mg DBP/kg among splenocyte subsets were significantly increased in rat pups, unlike dams. Reasons of these distribution alterations of CD8^+ T cells and B cells in rat pups are under study.


A case study of how the University of Oklahoma Libraries recruited, hired, and then on-boarded three Science Liaison Librarians who held advanced subject degrees but no Masters in Library Science. This study provides suggestions for modifying job postings, interview processes, and on-boarding to appeal to non-MLS subject experts and to fully inform them of the scope of liaison work.


Objective
To explore the application effect of clinical nursing pathway in minimally invasive transforaminal lumbar interbody fusion for lumbar disc herniation.

Methods
120 patients with lumbar intervertebral disc herniation treated by minimally invasive transforaminal lumbar fusion in our hospital from April 2015 to March 2017 were divided into the observation group (n=62) and the control group (n=58) by the random number table method. The control group was given routine nursing, while the observation group was given clinical nursing pathway intervention. Compared the nursing effect, the average hospitalization time, postoperative ambulation time, hospitalization expenses, and incidence of complications were recorded, and the mastery rate of functional exercise was compared.

Results
After nursing, the total effective rate of the observation group was 96.78%, significantly higher than that of the control group (77.58%) (P<0.05); the average time of hospitalization and the postoperative ambulation time in the observation group were shorter than those in the control group, the hospitalization cost was lower than that in the control group (P<0.05); the incidence of complications in the observation group was 3.22%, lower than that in the control group (18.96%) (P<0.05); the mastery rate of functional exercise in the observation group was 93.55%, which was significantly higher than that in the control group (79.31%) (P<0.05).

Conclusion
The intervention of clinical nursing path for patients with lumbar intervertebral disc herniation can promote the rapid recovery of the patients, reduce the postoperative complications, and improve the quality of nursing, with remarkable effect.

Key words:
Clinical nursing pathway; Lumbar disc herniation; Transforaminal lumbar interbody fusion


INTRODUCTION This poster describes an experimental email list, called BumpList, that imposes constraints on its participants. User interaction is studied and methods are proposed to reevaluate mailing list conventions to enhance interaction and communication. What new modes of expression can exist by altering the framework of the email list? How can new approaches to the structure of email lists augment and change accepted forms of online discourse?


Highlight: Instructions for use and assembly are presented for a modified step-point sampler. Modifications were made to eliminate bias and to increase ease of use. The basic design of the point frame is shown in Figure 1. The sampling point (a) is offset from the initial ground contact (b) to alleviate subconscious placement by the sampler. The distance it is offset varies with the angle the point rod makes with the horizontal. The inset shows the


We present a novel technology for real-time hyperspectral imaging in the terahertz range based on the use of a dual-comb source that promises to revolutionize most of the performance characteristics of current terahertz imaging systems.


P. shigelloides clearly represented in Enterobacteriaceae family. The study of Plesiomonas and knowledge about this bacterium is increasing rapidly. Plesiomonas shigelloides is as one of the pathogens that can be recognized as a more common case in patients who are infected with diarrhea. It is indicated that Plesiomonas diarrhea in most studies and clinical case reports is related to consumption of seafood or untreated water by people who travel to tropical or subtropical geographical locals. Our findings demonstrated acute clinical diarrhea of Plesiomonas with abdominal pain is more often and has a long duration of disease infected by other enteric pathogens. Still, more work needs to be done on this pathogens and needs more full investigation and its harsh effects need to be resolved.


In primates, grooming is considered among the most common behaviors for maintaining social bonds; however, to date, few studies have examined grooming behavior in gibbon species in detail. We used both a 5‐min interval scan method and social network analysis to study grooming in two groups of polygynous western black‐crested gibbon (Nomascus concolor) in Wuliang Mountain, Central Yunnan, China. Individuals in both groups spent little time in social grooming (1.45% and 1.97% of active time). We compared the two groups' grooming networks and found that the group that maintained a more stable social unit had a more complex grooming network while the group with new immigrants had a grooming network characterized by fewer grooming pairs. Females in both groups played important roles in the grooming network. A newly immigrant female spent the most time grooming others and chose the resident adult female as her main adult grooming partner. Other females from both groups chose the adult male as their primary grooming partner (except their offspring). A sub‐adult male who had resided in his natal group for 2 years after maturing into an adult also groomed more and was at the center of the network. This male finally replaced the breeding male in his group 3 years after our data collection period ended. We hypothesize that the immigrant female and the resident young adult male engaged in more extensive grooming interactions as a behavioral strategy to gain tolerance from long‐term residents. Our results suggest that female gibbons in polygynous groups actively cooperate in maintaining social relationships rather than co‐exist through tolerance or avoidance. Our observations indicate that grooming networks in crested gibbons reflect individual dynamics and partly support the social cohesion hypothesis for primate grooming. In this regard, we suggest that changes in gibbon grooming networks can be used to predict social change. Am. J. Primatol. 75:1165–1173, 2013. © 2013 Wiley Periodicals, Inc.


Coleus forskohlii (Willd.) Briq. (Labiatae), a spice and condiment crop, is highly susceptible to the rootknot nematodes, Meloidogyne spp. Using it as a test plant, the influence of amending soil with organic manure, on the biocontrol of Meloidogyne incognita with Paecilomyces lilacinus was investigated in glass house.


To conform to the property of priority differentiation and meet the dynamic resource requirement for multimedia traffics,a dynamic resource allocation and optimization strategy based flexible admission control is presented.A new bandwidth adjustment rule,a path bandwidth calculation algorithm and a QoS routing protocol that meets dynamic resource requirements are designed to support applications of the scheme in the multi-hop network environments.Simulation results show that the proposed scheme has low probabilities of new connection blocking and handoff connection dropping,and more traffic flows can be admitted.It supports differentiated services for flows with different priorities,and thus can achieve better share,balance and utilization for wireless resources as compared to conventional ones.


Trivalent chromium (Cr3+) is a beneficial mineral nutrient reported to lower the atherogenic index and reduce risks of vascular inflammation in diabetes. We recently reported that Cr3+ inhibits expression of a proatherogenic matricellular protein, thrombospondin‐1 (TSP‐1), in glucose‐stimulated human aortic smooth muscle cells (HASMC) in vitro. Using luciferase reporter assays, we further showed that Cr3+ significantly decreases TSP‐1 gene (THBS1) promoter activity in glucose‐stimulated cells. The goal of this study was to determine the molecular mechanisms by which Cr3+ inhibits high glucose‐induced TSP‐1 transcription in HASMC. Using protein DNA array (Panomics) that allows detection of activated transcription factors (TF) in nuclear extracts, we demonstrate that Cr3+ reduces activation of glucose‐induced TFs (IRF1, PPARγ), with predicted binding sites in the glucose‐responsive region of the THBS1 promoter. In contrast, Cr3+ did not have any effect on other glucose‐activated TFs (AhR, CEBP, Egr‐1) under similar experimental conditions. These results were further confirmed in EMSA using relevant THBS1 promoter‐specific oligonucleotide probes; specifically we show that Cr3+ attenuates THBS1 promoter‐specific IRF1 binding activity in glucose‐treated nuclear extracts. Additionally, immunoprecipitation of cell lysates with anti‐IRF1 followed by immunoblotting with RL2, an antibody that recognizes O‐linked N‐acetylglucosamine (O‐GlcNAc) moieties on proteins, shows a dramatic reduction in O‐GlcNAcylation of IRF1 by Cr3+ in glucose‐stimulated cells. Together, our data suggest that modulation of IRF1 via O‐GlcNAc modification plays a key role in downregulation of TSP‐1 transcription by Cr3+.


1. The anatomy and histology of the graft union of etiolated pea stems have been investigated. Five and nine days after grafting, the graft unions were fixed and sectioned. Separation into four types was made between the grafts which grew rapidly or slowly to begin with and those which ultimately did or did not take. The following correlations were found: 2. In the grafts which grew rapidly in the first days, very good approximation between the original vascular bundles of stock and scion was found. When the approximation was poor, the grafts grew slowly to begin with. In the grafts which ultimately took, good development of new vascular connections between stock and scion was found. Such connections were almost or completely lacking in the unsuccessful grafts. 3. To test how far good or poor initial vascular approximation influenced the growth rate of the grafts, some special experiments were carried out which indicated that only the initial growth rate and the period before the scion reaches its maximal growth rate are affected by it. The ultimate maximal growth rate and the percentage of successful grafts were not significantly different in grafts with good or poor approximation. A result corroborating these conclusions was obtained when two graft unions were made instead of one. This also did not alter the maximal growth rate of the scion. Thus in peas the ultimate growth of the scion is not affected by the type of grafting or the graft union.


Based on the comparative review and problem analysis of the scientific management and development of literature and information resources in the process of integration of domestic and foreign cities,this paper suggests establishing an appraisal supervision and management system,improving utilization rate of literature resources,orientating services to the economic and cultural construction in Guangzhou and Foshan regions,constructing a scientific management system of sharing and operation,ensuring the scientific development of literature resources,scheming literature resource sharing plan in Guangzhou and Foshan regions to realize social sharing development of literature and information resources.


In this work, oil palm empty fruit bunch (EFB) and jute fibers were treated by 2-hydroxy ethyl acrylate (2-HEA) to enhance interaction with the epoxy matrix in hybrid composites. Hybrid composites were fabricated by the hand lay-up technique by reinforcing chemical-treated oil palm EFB and jute fibers in an epoxy matrix. Physical (density, void content, water absorption, and thickness swelling) and chemical resistance properties of treated hybrid composites were characterized. Chemically treated oil palm EFB/jute fiber reinforced hybrid composites display better dimensional stability (water absorption and thickness swelling) and chemical resistance as compared to untreated hybrid composites. This article has been corrected with minor changes. These changes do not impact the academic content of the article.


Objectives We sought to evaluate the yield, cost, feasibility, and acceptability of routine tuberculosis (TB) screening of pregnant women in Cotonou, Benin. Design Mixed-methods, cross-sectional study with a cost assessment. Setting Eight participating health facilities in Cotonou, Benin. Participants Consecutive pregnant women presenting for antenatal care at any participating site who were not in labor or currently being treated for TB from April 2017 to April 2018. Interventions Screening for the presence of TB symptoms by midwives and Xpert MTB/RIF for those with cough for at least two weeks. Semi-structured interviews with 14 midwives and 16 pregnant women about experiences with TB screening. Primary and secondary outcome measures Proportion of pregnant women with cough of at least two weeks and/or microbiologically confirmed TB. The cost per pregnant woman screened and per TB case diagnosed in 2019 USD from the health system perspective. Results Out of 4,070 pregnant women enrolled in the study, 94 (2.3%) had a cough for at least two weeks at the time of screening. The average (standard deviation) age of symptomatic women was 26 ± 5 years and 5 (5.3%) had HIV. Among the 94 symptomatic women, 2 (2.3%) had microbiologically confirmed TB for a TB prevalence of 49 per 100,000 (95% CI: 6 to 177 per 100,000) among pregnant women enrolled in the study. The average cost to screen one pregnant woman for TB was $1.12 USD and the cost per TB case diagnosed was $2271 USD. Thematic analysis suggested knowledge of TB complications in pregnancy was low, but that routine TB screening was acceptable to both midwives and pregnant women. Conclusion Enhanced screening for TB among pregnant women is feasible, acceptable, and inexpensive per woman screened, however in this setting has suboptimal yield even if it can contribute to enhance TB case finding.


Vulcanized rubber components possess material non-homogeneities due to either non-uniform vulcanization during their fabrication or attack of thermal and oxidative environments durding their service life. The primary objective of this paper is to theoretically inveslighte the effect of a material non-homogencity on the shearing response of an isotropic, incompressible neo-Hookaan slab. The non-homogeneity considered in the slab is the spatially varying shear modulus that is approximately described by a spatial-distribution function. A parabolic and a boundary layer-like spatial-distribution function are assumed; then exact solutions for the stress-strain fields in the slab are obtained by solving the liness momentum balssex equations based on a postulated inhomogeneous shearing deformation. Our theoretical results show that the shear strain is more inhomogeneous and localized for the slabs with a greates degree of spatial non-homogencity. In the non-homogetneous slab, we have also determined the existence of a uniform shear stress and an inhomogeneous first normal-stress difference whose variation is similar to that of the shear strain. The implications of these results are considered in terms of the fabrication, performance and mechanical characterization of the rubber-elastic materials.


In order to facilitate appropriate patient selection for PCI in general, appropriate use criteria (AUC) for coronary revascularization have been endorsed by 6 professional societies in the USA in 2009, and revised in 2012 and 20172–4 (Figure 1). The appropriateness rating for each clinical scenario is determined on the basis of the different combinations of the clinical items (Figure 2). In the USA, appropriateness assessment demonstrated that 11.6% of PCIs were deemed to be inappropriate in non-acute setP ercutaneous coronary intervention for lesions with chronic total occlusion (CTO-PCI) remains technically challenging. Among patients who undergo coronary angiography, the incidence of CTO has been reported to be as high as 15–30%.1 As with any patient with stable coronary artery disease (CAD), standard treatment for CTO patients should include antianginal therapy. Typically, patients who remain symptomatic or have a large burden of ischemia despite maximal medical therapy would be considered for revascularization. In most circumstances, coronary artery bypass grafting is considered too invasive; consequently, most CTO patients are referred for PCI. Article p ????


The elevated ambulatory pressure in the peripheral venous system of chronic venous insufficiency (CVI) patients manifests itself not only in the form of disturbed macrocirculation but also and particularly in microangiopathic changes. For this reason, it is closely correlated with trophic disorders of the skin and can ultimately lead to ulceration. Using microcirculation research techniques, we are able to provide clear evidence of a typical microangiopathy in chronic venous insufficiency. Fifty CVI patients in Widmer stages I, II, and III were examined with fluorescence video microscopy, intravital video capillaroscopy, transcutaneous oxygen partial pressure measurement, TcpO2 and laser Doppler flowmetry. The effects of compression therapy with individually fitted compression stockings on capillary morphology were studied over a period of 4 weeks in 20 CVI patients in Widmer stages I and II. The capillary pressure was measured during simulated muscle contraction using a servo‐null micropressure system. We periodically drew blood from the dorsalis pedis vein and a brachial vein of 11 healthy test persons and 8 patients with stage III CVI during experimental venous hypertension in order to evaluate the expression pattern of leukocyte adhesion molecules involved in inflammation: LFA‐1 (CD11a), Mac‐1 (CD11b), p150,95 (CD11c), CD18, VLA‐4 (CD49d), and L‐selectin (CD62L). In the same patients, we used immunohistochemical methods to examine clinically unaffected skin and the skin near an ulcer, focusing on the adhesion molecules ICAM‐1, VCAM‐1, and E‐selectin. The microangiopathic changes observed with worsening clinical symptoms include a decrease in the number of capillaries, glomerulus‐like changes in capillary morphology, a drop in the oxygen content (tcpO2) of the skin, increased permeability of the capillaries to low‐molecular‐weight substances, increased laser Doppler flux reflecting elevated subcutaneous flow, and diminished vascular reserve. These microangiopathic changes worsen in linear proportion to the clinical severity of chronic venous insufficiency. In patients with venous ulcerations, the baseline expression of LFA‐1 and VLA‐4 on lymphocytes, Mac‐1 expression on the myeloid cell line, and L‐selectin expression on all three cell lines was not significantly different from that in healthy controls. During orthostatic stress, there was a significant reduction in the expression of L‐selectin in blood cells collected at foot level in the controls (p = 0.002), but not in the patients. Clinical improvement by compression therapy was accompanied by an increase in the number of nutritive capillaries, while the diameter of the capillaries and the dermal papillae was reduced. When ulcers healed in a short period (<6 weeks), we observed a concomitant increase in the number of capillaries (p < 0.05). Microangiopathy appears before trophic disorders of the skin develop. Even trophically normal skin areas may have dilated nutritive capillaries, an early sign of disturbed skin perfusion. These changes represent a plausible explanation for the development and to recurrency tendency of venous ulcers. The reduced expression of lymphocytic L‐selectin in healthy controls during the orthostatic stress test may be an indication that the cells are activated by venous stasis. Clinically effective therapeutic measures improve the impaired microcirculation of the skin in the ankle area.


Transition care is the important conditioin,which helps children of chronic diseases enter from paediatrc care to adult care.At present,transtion care has become a hot topic overseas,but it hasn't been thought seriously in China.Now this paper reviews the causes,essential aspects and current situation of transition care,as well as its assignments to patients,parents,doctors and hospitals respectively.

Key words:
Chronic disease;  Children;  Adult;  Transition care


A bidirectional three-phase high-gain converter has advantages of low current and voltage stresses, capacitor voltage self-stabilizing, inductor current self-sharing and high-gain abilities, while it also has disadvantages of narrow duty cycle range and narrow input/output voltage range, which makes the converter just suitable for high-gain applications but not wide input/output applications. A piecewise combined switching scheme is proposed, which consists of three switching strategies and can widen working duty cycle range and input/output voltage range of the converter without increasing switching voltage stress, thus makes the converter suitable for wide-input/output applications such as photovoltaic power generation, energy storage systems, DC motor control and so on. In order to analyse the effect of parasitic parameters on voltage ratio and facilitate closed-loop design of the converter, model of each strategies in Buck operation are studied. Stable-state analysis, voltage gain and switching voltage stress are also studied. Wide input/output voltage range and corresponding working duty cycle range, voltage gain and low switching voltage stress feature are verified by simulation and experiment.


A previous dead reckoner involved a classical gyrocompass, a Hewlett-Packard minicomputer, and a true airspeed sensor. In an effort to bring the cost of this system more in line with the realities of general aviation, recent work was done on replacing the minicomputer with a microcomputer and implementing a fluidic rate sensor in the compass system in place of the directional gyro.


Compared with that in developed countries,such as the united states and canada,road transport market management in our country is far from perfect.On the one hand,it is because of the lag of the economy development,but the most important reason is the system.At present,the system's shortcoming becomes an important factor to restrain the development of road transport market.Aiming at the most important issues,this paper analyses the problems in the road transport system and makes some proposals to reform road transport market management system.


ABSTRACT Purpose: This study aims to explore how agency is constructed in everyday life with cancer in relation to daily activities and habits. Agency is approached as a key element of daily life existence, and it is constructed in terms of "acting in the world", self-behaviour, changing routines, identity expectations and life course. Methods: The study is based on a social constructionist approach and the data of 32 participants were gathered through a public call for narratives on "everyday life with breast and prostate cancer" in Finland in 2009. The analysis was conducted by utilizing a discursive research approach and coding. Results: Three categories of agency were identified: stable—where agency continues fluently after cancer; fragile—where the ability to take care of daily activities has deteriorated; and recreated—where living with cancer adapts or creates a new basis for daily living. Conclusions: The findings of the study suggest that everyday life activities and habits define and (de)construct agency, and that these constructions are tightly linked to the ill person's overall life situation, physical abilities and cultural context. Having cancer can create new challenges to agency in daily life but does not suppress agency.


It is interesting to compare structural characteristics of the first dome of Hagia Sophia (Istanbul, Turkey) whith those of the rebuilt second dome. The two domes have been analyzed applying FEM numerical analysis with elasto-plastic joint elements to confirm the structural superiority of the latter.


Nano-sized strontium-doped hydroxyapatite(Sr-Ca HAP) was prepared by chemical precipitation method.The structure of nano-sized Sr-Ca HAP was analyzed by means of XRD,FT-IR,and TEM etc..The adsorption properties of nano-sized Sr-Ca HAP were studied with bovine serum albumin(BSA) as adsorbing target.Results showed that the nano-sized Sr-Ca HAP had good dispersion,and was nanometer acicular crystal with a certain particle size.The adsorption amount of nano-sized SrCa HAP to BSA was the largest when the adsorption time of 1 h,the adsorption temperature of 45 ℃,and p H of 7;and adsorption amount increased with the increasing of BSA concentration.The adsorption amount of nano-sized Sr-Ca HAP to BSA was larger than that of HAP.


The effects of strontium substitution, alumina addition and calcination temperature on the phase development and the microwave dielectric properties of BSSmT ceramics prepared by the conventional mixed oxide process with the nominal composition, (Ba1− x Srx)2Sm2Ti9O23 (x ≤ 0.07) were investigated. The phases synthesized upon calcination or sintering were analyzed by X-ray diffraction. It was found that the calcined powders were composed of (Ba,Sr)Sm2Ti4O12, Sm2Ti2O7 and (Ba,Sr)Ti4O9 phases, which converted to (Ba,Sr)Sm2Ti4O12 and (Ba,Sr)2Ti9O20 phases after pellets were sintered at the temperature from 1300 to 1350°C. Relative permittivity (ϵ r ) and the temperature coefficient of resonant frequency (τ f ) values were not much affected by the calcination temperature and Sr substitution, while the quality factor (Q·f) value was greatly influenced. It was also found that both strontium substitution for barium ions and alumina addition helped the formation of Ba2Ti9O20 secondary phase instead of BaTi4O9 secondary phase.


The removal of NO from gas streams using a plasma generated by dielectric barrier discharges is investigated experimentally. NO removal efficiencies of >95% are achieved. The removal efficiency of NO is measured as a function of NO, O 2 , CO 2 , and H 2 O g concentrations, as well as temperature of the gas stream. Removal of NO decreases under dry conditions with increasing O 2 concentration at ≃24 o C due to plasma oxidation of N 2 . At elevated temperatures, increasing H 2 O g concentration and decreasing CO 2 concentration result in increasing NO removal efficiencies


Purpose: In radiotherapy, inter-fraction dose accumulation is necessary to evaluate the dose distribution of an entire course of treatment by adding up the multiple dose distributions of the different fractions. This summation of dose distributions is difficult due to changes in tumour volume and possible changes in the patient anatomy during treatment. For this purpose, we have investigated the accuracy of a non-rigid deformation method in terms of dose accumulation. Materials: CT images were acquired using our Siemens Oncor MV cone beam CT imager and dose calculations were performed on these CT scans using CMS XiO treatment planning system . In total , 5 arbitrary deformations with maximum displacements up to 3 em were applied to a cubic silicon phantom with 27 implanted markers . Before registering the silicon was masked in order to erase the markers and force homogeneous density, the CT scans were registered to the CT scan at the phantom in non-deformed condition using 'morphons', a non-rigid deformation method. The calculated deformation field was applied to the dose distributions of the 5 CT scans, and the accumulated dose per voxel was calculated. Three different dose distributions were investigated; a simple 2 beam plan , a standard 3 beam conformal plans with wedges and a highly conformal 8 beam plan . To asses the accuracy of the non-riqid registration, the dose values at the 27 marker positions in the original CT images were taken as the reference dose values and compared to the dose values found with and without non-rigid deformation applied. Results: The maximum shift in marker position was 28 mm Which lead to a maximum dose difference of 38%. The absolute dose difference due to deformation over all markers and CT scans for the 3 plans was 7.4±7.5%, 8.1± 6.6% and 6.3±9.4%, respectively. Using non-deformable registration a decrease of the absolute dose difference to 4.2±3.9%, 2.4±2.4%, and 1.7±2.8% was achieved. Overall a significant (p<O.Ol) decrease in both the mean absolute dose difference and variance was demonstrated using nonrigid registration. Conclusions: Dose deformation using the non-rigid registration method is possible using on-line CT imaging . This opens possibilities for inter-fraction dose accumulation and adaptation of treatment to incorporate possible differences in planned and delivered dose to the target volume and organs at risk due to anatomical deformations. Applying the deformation models to patient data and verification using MOSFET detectors is currently under investigation. Acknowledgment: We thank the Medical Informatics laboratory of Linkoping University for sharing their implementation of the Morphons method.


The paper presents the results of computational analyses simulating the open water tests of ship propeller in inclined flow. The results of computations are compared with the results of corresponding experimental analyses carried out in the towing tank of Ship Design and Research Centre (CTO S.A.). The object of the research was the model propeller identified as CP469. The aim of the study was to validate the results of numerical simulations performed at model scale. The computational analyses were carried out at model scale with the use of two computational models: Reynolds-Averaged Navier-Stokes model implemented in Star CCM+ software and lifting surface model, implemented in the in-house code. The work is part of a series of activities aimed at the development of advanced numerical methods supporting the design process of ship propellers with taking into account their actual operating conditions.


In this paper, we explore the relationship between the human-encoded semantics of ontologies and their application to natural language processing (NLP) tasks, such as word-sense disambiguation (WSD), for which such ontologies may not have been originally designed. We present a method for assessing the semantic content of an ontology with respect to a target domain, by spreading activation over a graph that represents instances of ontology concepts and relationships, in domain text. Our proposed method has several advantages beyond existing ontology metrics. By identifying bias or imbalance in the ontology, we can suggest target areas for improvement, and simultaneously facilitate the automated optimisation of the graph for use in the chosen NLP task. On applying this method to the Unified Medical Language System (UMLS) ontology, we significantly outperformed existing graph-based methods for WSD in biomedical NLP (0.82 accuracy). The subsequent introduction of a fall-back mechanism, using word-sense probability, achieved state of the art for unsupervised biomedical WSD (0.89 accuracy).


This research reveals Islamic philanthropy through a sustainable community development program initiated by Amil Zakat Agency ( Lembaga Amil Zakat ), Dompet Dhuafa, Riau Province . The research traces the Da' i Cordofa program, which is a social movement for empowerment people in outback Riau, Indonesia. The study is field research that used the qualitative method. It collected data by observation, documentation, and interview process. Resulting show that is implementing the Da' i Cordofa program has influenced local people, where they are adaptable to increase religiosity. Meanwhile, the philanthropy program has been implemented by accompanying, guiding, and empowering local people to create a new habit for prosperity. The funding of philanthropy collects from donator for creating a new community development program that is developed to socially-sustainable local people in Talang Mamak local occasion, Riau.


Cotyledons of 3 cultivars of pickling cucumber (Cucumis sativus L.) were partially or wholly removed during early seedling development to determine the effect of reduced seedling vigor on subsequent sex expression. Under winter conditions in the greenhouse, removal of 11/2 to 2 cotyledons led to reduced seedling vigor, an increase in the number of staminate flowers, and a reduction in the number of pistillate flowers on the first 10 nodes of the hybrid cultivars 'Pioneer' and 'Pickmore'. During spring trials, removal of the cotyledons led to a vigor reduction in young seedlings, but mature plants were not stunted. Under conditions which were more favorable for plant growth, sex expression was unaltered in the plants. Sex expression was generally unaffected by cotyledon removal in an inbred line 'MSU 713-5' in both winter and spring trials, although the number of pistillate flowers produced was reduced by removal of both cotyledons 3 or 6 days after emergence in the spring trials. It appears that major loss of cotyledonary tissue can lead to an alteration of sex expression in hybrid cucumbers grown under less than optimum conditions for plant growth.


The substituted phenanthrenequinone thiosemicarbazones (HL1, HL2 and HL3), and their metal
complexes (M = Ru(II) or Zn(II); SM1, SM2, SM3 and SM4) were synthesized and characterized by
FT-IR, 1H & 13C NMR and ESI-MS. The spectral data IR, 1H & 13C NMR and ESI-MS indicates two
tridentate ligands coordinating in the form of an octahedral geometry. The gas phase geometry of all
the zinc(II) and ruthenium(II) complexes was carried by using density functional theory (DFT). The
antimycobacterial susceptibility testing at 100 μM of the complexes using resazurin microtiter plate
assay resulted in growth inhibition. Complexes SM2, SM3 and SM4 showed good antimycobacterial
activity at 100 μM concentration by using rifampicin as inhibition control.


By providing 100 days of wage employment, the scheme provides an income supplement to rural poor households. The scheme provides work throughout the year, especially in the agriculture lean season. Various provisions of the MGNREGA scheme bring considerable changes in wage pattern in rural areas. The study investigates the MGNREGA scheme impact on rural employment and poverty alleviation in the Bijnor district, Uttar Pradesh state. This study is predominantly based on the primary source of data collection from the selected respondents by using the Random sampling method. The finding of the study drowns in information from a field survey of 51 households that were actively working in the scheme in the district during 2018-19 and 2019-20. The research study covers aspects like awareness about the scheme, change in expenditure pattern after working under the scheme, the social condition of the respondents in a particular study region. The study also reveals that the annual expenditure of sample households is the same before working in the scheme and after working in the scheme. Only 31% of sample households have annual income above Rs. 40,000 (earn from both the primary source of income and MGNREGA) and annual expenditure were 33%, which is more than the annual income. From the total sample households, 82% of rural households have the government provide toilets (made under SBM).


Abstract The well-being of a child who has experienced abuse or neglect is dependent on whether or not an interdisciplinary, holistic treatment perspective is applied in the hospital setting. This paper examines the different interdisciplinary approaches used by two major hospitals, one in the United States and the other in Brazil, in their attempt to confront the social problem of child maltreatment.


Intentionally flawed piping and vessel specimens are now required to simulate potential flawed conditions in nuclear power plants. These specimens will be used in a practical examination ``Performance Demonstration`` to verify the capabilities of ultrasonic testing (UT) personnel, procedures and equipment. ASME Section 11, Appendix 8, ``Performance Demonstration for Ultrasonic Examination Systems,`` was introduced into the Code to help substantiate the capability of NDE to detect and size flaws in nuclear power plant components. This paper is a brief discussion of some of the current methods used to implant flaws and will describe and evaluate the manufacturing techniques used to implant thermal fatigue cracks in stainless steel pipe and carbon steel vessel material. The accurate placement of flaw implants is critical and this paper will describe in some detail the tolerances applied to the flaw implant technology.


Today, embedded systems (ES) tend towards miniaturization and the carrying out of complex tasks in applications such as the Internet of Things, medical systems, telecommunications, among others. Currently, ES structures based on artificial intelligence using hardware neural networks (HNNs) are becoming more common. In the design of HNN, the activation function (AF) requires special attention due to its impact on the HNN performance. Therefore, implementing activation functions (AFs) with good performance, low power consumption, and reduced hardware resources is critical for HNNs. In light of this, this paper presents a hardware-based activation function-core (AFC) to implement an HNN. In addition, this work shows a design framework for the AFC that applies a piecewise polynomial approximation (PPA) technique. The designed AFC has a reconfigurable architecture with a wordlength-efficient decoder, i.e., reduced hardware resources are used to satisfy the desired accuracy. Experimental results show a better performance of the proposed AFC in terms of hardware resources and power consumption when it is compared with state of the art implementations. Finally, two case studies were implemented to corroborate the AFC performance in widely used ANN applications.


In their article, Olipitz et al. (2012) examined signs of DNA damage after chronic exposure of C57Bl6 mice to low-level ionizing radiation (3 mGy/day). For 5 weeks, mice were irradiated continuously with 35.5 keV X-rays produced by the decay of iodine-125, yielding an accumulated dose of 105 mGy. The observed effects were compared with those from acute irradiation by X-ray machine at 1,700 mGy/day up to the same accumulated dose.


According to the demand situation for high quality talent in the contemporary society,this paper discusses the education function in vocational colleges,puts forward the necessity of ntrepreneurship education function of vocational college libraries.And according to the present situation of the libraries,this paper discusses the measures that should be taken.


The reform of departmental budget undergoing is one of the critical steps for China to establish the public finance and lawful finance.The department as the main body of budgeting has the utmost importance to clarify fiscal responsibility of the department.This is the fundamental place for departmental budget because it is meaningful only when the fiscal responsibility is ascer- tained individually.The nature of budget is the rule of law,and the budgetary responsibility is to control and supervise financial activity.Meanwhile,the budget has to produce the equivalent le- gal effect to all departments and people who take the responsibilities.The department,as the main body of double interests and the arena for officials who try for individual interest,has to set up sound budgetary constraint.


This letter investigates the bistatic radar response of soil moisture and surface roughness of bare soil surfaces at L-band using the advanced integral equation model (AIEM). It focuses on the use of bistatic geometries away from the specular region. To better explore the potential of bistatic scattering for soil moisture sensing, both polarized and angular scattering coefficients, and their combinations, are evaluated using a defined sensitivity index. The results show that sensitivity is enhanced in a bistatic mode compared with the monostatic case. Using a combination of dual polarized and angular data suppresses an undesired impact of the surface correlation function. Moreover, the forward region is preferred to soil moisture sensing regardless of the surface correlation function. Among the combinations investigated, the dual angular observation reduces the influence of surface roughness, preserves a good sensitivity to soil moisture response, and thus seems to be a good candidate for soil moisture sensing in bistatic configuration.


Protein and fiber can promote satiety and reduce energy intake independently, but few studies have compared the satiating effects of both nutrients in whole foods. This study compared satiety after protein‐enhanced pasta (16g protein, 6g fiber), fiber‐enhanced pasta (11g protein, 8g fiber) or control pasta (11g protein, 6g fiber). In a randomized, double‐blind crossover trial, fasted (4 hours) men (n=18) and women (n=18) ate pastas at 12:00pm along with 500mL of water and rated satiety using Visual Analog Scales at 0, 15, 30, 45, 60, 90, 120 and 180 minutes and palatability at 30 minutes. At 3:00pm, subjects received ad libitum snacks and intake was overtly measured by weight. Breakfast intake was recorded in a food diary and so was intake after men and women left the study visit. Gastrointestinal tolerance was rated by a questionnaire. No differences were found between the pastas for satiety, snacking or gastrointestinal tolerance. Men ate significantly more calories (p=0.007) after the protein pasta versus the fiber pasta (1701 ± 154 vs. 1083 ± 154) with control pasta intermediate (1368 ± 154). The protein pasta was rated less tasty (p=0.03) and less pleasant (p=0.01) than the other two pastas. Increasing the satiating properties of whole foods conveys a challenge as people are influenced by hedonic properties of food.


Abstract The moisture content of iron ore must be suitable for safe handling and transporting operations. Here, the characterization and drying kinetics of iron ore concentrates were presented and recommendations for the design of dryers were discussed. Pellet feed and sinter feed showed a high amount of fine particles (8–20% dp <10 µm) and a low pore volume (Vpore <10 µm). An ample period for drying at constant rate was observed (critical moisture around 5%), indicating that drying processes aiming at a moderate moisture reduction could be performed within this period. These findings contribute to the design of dryers and support economic operations.


Tin electroplating was proceeded on electroless copper plated PET fabrics to obtain tin-copper coated PET fabrics.The fabrics were characterized by SEM and EDS.Effects of voltage and time for surface resistance were investigated.Adherence stability,anti-oxidation property and electromagnetic shielding performance were tested.The results demonstrated that a uniform tin layer was plated on the surface of copper plated PET fabrics with about 3.0?μm thickness,when set the voltage of 1 V and the time of 6 min as the process of tin electroplating.The surface resistance was decreased with the increasing of voltage and time,and it was almost keep the line with the time continue increasing.The tin-copper layer and fabric had good adherence stability,and the rubbing fastness was 4~5 grade.The decay rates were up to 99.999?99% for electromagnetic wave of 2?000 ~3?000 MHz,thus tin-copper coated PET fabrics not only displayed excellent electromagnetic shielding,but also the electroless plating copper layer could be prevented to be oxidized by electroplating tin,which made the material had better practical performance.


NGC 5824 is a massive Galactic globular cluster suspected to have an intrinsic spread in its iron content, according to the strength of the calcium triplet lines. We present chemical abundances of 117 cluster giant stars using high-resolution spectra acquired with the multi-object spectrograph FLAMES. The metallicity distribution of 87 red giant branch stars is peaked at [Fe/H] = −2.11 ± 0.01 dex, while that derived from 30 asymptotic giant branch stars is peaked at [Fe/H] = −2.20 ± 0.01 dex. Both the distributions are compatible with a null spread, indicating that this cluster did not retain the ejecta of supernovae. The small iron abundance offset between the two groups of stars is similar to the abundances already observed among red and asymptotic giant branch stars in other clusters. The lack of intrinsic iron spread rules out the possibility that NGC 5824 is the remnant of a disrupted dwarf galaxy, as previously suggested. We also find evidence of the chemical anomalies usually observed in globular clusters, namely the Na–O and the Mg–Al anticorrelations. In particular, NGC 5824 exhibits a huge range of [Mg/Fe] abundance, observed in only a few metal-poor and/or massive clusters. We conclude that NGC 5824 is a normal globular cluster, without spread in [Fe/H] but with an unusually large spread in [Mg/Fe], possibly due to an efficient self-enrichment driven by massive asymptotic giant branch stars.


According to the characteristics of continuous beam of a landscape pedestrian bridge,which has a link-type twisted surface spatial structure,this paper introduces the techniques for fabrication of steel box girders,by which the girders were made reversely and turned to reset on the pedestals for matching and the segments of girders were precisely controlled for their linearity.With the improvement of construction technology,the manufacturing techniques for steel box girders for this project made a breakthrough in the traditional preassembling techniques,which ensured the quality of the final product,improve the production efficiency and cut down the manufacturing cost.


The mechanical alloying (MA) technique was used to prepare stainless steel powders containing nitrogen by high energy ball milling under N_2 atmosphere and NH_3·H_2O medium. The effect of MA technique on the property of the powders was investigated. The results showed that the nitrogen content in the powder increased and the powder size decreased with increasing milling time. The nitrogen content in the powder was close to that in high nitrogen stainless steel. The powder size was close to 1.878 urn when milling was carried out for 10 h.


The aim of this paper is to analyze the role of Technology Transfer Offices (TTOs) in promoting the creation of academic spin-offs and contributing to their performance. Specifically, it aims to identify the relationship between the resources invested in TTOs and the creation and growth of academic spin-offs. The empirical analysis refers to Italy, where a law passed in 1999 allowed academicians to be actively involved in newly-established companies for the 'industrial use of research'. Even if spin-offs existed, de factu, before 1999, since then, almost all Public Research Institutions (PRIs) have developed specific regulations for the creation of academic spin-offs and provided resources to promote and support them. We used the data on the flow of academic spin-offs and resources invested in TTOs in Italian universities during the period 2002-2010 to investigate if and how investments in TTOs contributed to the set-up and performance of spin-offs. The results of the empirical analysis show that in a first phase academicians reacted more readily than universities to the opportunity offered by the new legislation, which may in part be due to the organizational rigidity that characterizes PRIs in Italy. However, the empirical analysis also shows that after this initial phase the size of the TTO (in terms of employees), which is the result of investments by the university, has a positive influence on the number of spin-offs set up by universities. However, we found no relationship between the resources invested in TTOs and the performance of spin-offs, which probably depends more dependent from both long term investments in research and the (economic) characteristics of external environment in which the university is located.


The problem of young children tuberculosis in Russian Federation (RF) still remains actual because of high-level spread of disease between adults and anatomical and physiological features of this period of childhood. The young children morbidity in Saint Petersburg, 2015-2017 became 7.1-5.3 of 100,000 population. It is typical for the age group from 0 to 3 years that tuberculosis development often becomes into the state of active disease and does not stop as latent infection. Our research includes children of early age whose tuberculosis has been diagnosed in 2012-2017 – totally 101 children. One third of the patients were not vaccinated with the BCG vaccine, moreover 41.9% were not vaccinated because of perinatal contact with HIV and 22.5% because of perinatal contact with HIV + hepatitis C. Each second child related to social risk group. Contact with MBT expectorator has been found for 64% of children: drug resistance for at least one drug has been met in 70% cases, including 19% MDR-TB and 11% XDR-TB. Immunology diagnosis analysis showed up that at the moment of the disease detection the tuberculin skin test in 93% cases was positive, but often moderately expressed, meanwhile the Diaskintest was positive in 92% cases, mainly hyperergic or expressed. Objective diagnosis for 79% patients showed symptoms of intoxication of different degrees, for 50% – micropolyadenia, local symptoms – only for 13%. Structure of diagnosis contained mainly intrathoracic lymph nodes tuberculosis (67%), gene ralized forms – 9%, extrapulmonary – 1%. Complicated tuberculosis has been observed in 38% cases. After treatment recovery has been achieved for 98 children, but also 3 lethal cases occurred – all for non-vaccinated infants in case of severe concomitant disease. Conclusion: nowadays development of active tuberculosis in young children is caused by increasing quantity of BCG-unvaccinated newborns – mostly because of perinatal HIV-contact, and poor social conditions.


A new sampling type electromagnetic calorimeter, FOrward CALorimeter (FOCAL), has been proposed for the ALICE experiment at CERN to boost its physics capabilities in the forward pseudorapidity region (2.5≤η≤5.5). A detailed GEANT-4 simulation was perfomed and an optimised geometry, with depth 20 XR and transverse size with inner and outer radii of 6 cm and 80 cm respectively, at 8 m away from the interaction point was obtained. The absorber/ convertor and the detector were chosen to be Tungsten and Silicon repectively, to confine and tighten the electromagnetic showers along the longitudinal and transverse directions for better energy and position resolutions in the desired energy range (1–200 GeV). The calorimeter has longitudinal segmentation with 20 layers, each consisting of 1 XR thick W and 300 μm Si pad sensors followed by associated electronics. Also, for better position resolution, 3 pixelised (1 mm) Si-sensor layers were used along with comparatively coarse segmentation for the other layers (1 cm). A series of prototype detectors were fabricated and tested both with radioactive source and test beam to check the feasibility and functionality of the calorimeter. Initially, a miniprototype was constructed and experimented at the CERN-PS using MANAS as the readout electronics [1]. A linear relationship between simulation and experimental results ensured satisfactory performance of the mini-tower. Following the successful test, a full-depth (20 XR) FOCAL prototype was designed, developed and tested at CERN-SPS beam line using MANAS and ANUSANSKAR as the readout ASICs, whose details have been presented at the DAE Symp. On Nucl. Phys, 2016 [2]. Both the prototypes were tested with pions to study MIPresponse and electrons (EM-shower) of different incident energies starting from 1 GeV to 60 GeV. Analysis shows performance of the prototype getting affected (saturation in ADC distribution) because of limited dynamic range (upto 600 fC) of the ASICs used. Thus, a new ASIC, ANUINDRA with large dynamic range (~ 2.6 pC) has been designed to overcome the saturation in data taking for higher energies. This ASIC has been tested in the laboratory as well as with the full-depth prototype at the SPS beam line facility at CERN.


I report on a wave optics simulation with a spherical wave source through turbulence with a non-Kolmogorov power-law. Peak scintillation is observed to increase with power-law at a rate faster compared to plane wave sources.


The key word in "A Dream in Red Mansions"is "true"and"false"where "dream"is the key to realize them.Based on this assumption,the narrative function of"dream"is analyzed from the perspective of time and space construction(the joints of time and space transmission,the frame of time and space construction) and characterization(highlighting,complementing and retorting their characters).


Lubinski and Humphreys (1990) illustrated how moderator effects uncovered using hierarchical multiple regression procedures may be spurious and that the predictor-criterion functional relationship may be better characterized by a nonlinear function. They recommended concurrently inspecting nonlinear functions when examining moderator effects. This article reviews the evidence presented by Lubinski and Humphreys to substantiate their argument and the generality of their findings beyond their data. Although an examination of nonlinear functions may be justified in their specific illustration, the blanket recommendation of inspecting polynomial terms when examining moderator effects is troublesome and may itself lead to spurious conclusions. In a recent article in Psychological Bulletin, Lubinski and Humphreys (1990) presented a thoughtful discussion of how moderator effects uncovered using hierarchical multiple regression analyses (HMRA) may be spurious. Using data from the Project Talent Data Bank (Flanagan et al, 1962), Lubinski and Humphreys illustrated empirically that a nonlinear term (e.g., X1 or X1'1) may characterize the functional relationship between predictors (in their case, quantitative and spatial abilities) and the criterion (exceptional levels of mathematical sophistication) better than the interaction term. As a consequence, Lubinski and Humphreys concluded that researchers examining moderator effects should concurrently inspect nonlinear functions. In this article I review the evidence presented by Lubinski and Humphreys to substantiate their argument and the generality of their findings beyond their data set. Although an examination of nonlinear functions may be justified in their specific illustration, the blanket recommendation of inspecting polynomial terms when using HMRA to examine moderator effects is troublesome and may itself lead to spurious conclusions.


ii ACKNOWLEDGMENTS iii TABLE OF CONTENTS iv Chapter 1: Introduction 1 1.1 Overview 1 1.2 Antenna History 2 1.3 Current Work 5 1.4 Statement of Problem and Summary of Issues 6 Chapter 2: Fundamentals of Electrically Small Antennas 9 2.1 Fundamental Limitations 9 2.1.1 Section Overview 9 2.1.2 Limit on Radiation Q 11 2.1.3 Limit on Radiation Efficiency 16 2.2 Design Issues for Electrically Small Antennas 21 2.2.1 Currents on Dipole Antennas 21 2.2.2 Antennas over Conducting Ground Planes 24 2.3 Design Issues in the Hand-Held Environment 27


Introduction: Obsessive-compulsive disorder (OCD) and bipolar disorder (BD) are two psychological disorders that can greatly impair psychological, emotional and communication wellbeing. Aim: The present study sought to compare physical health and thought-action fusion in OCD patients, BD patients and normal (non-clinical) individuals. Method: The present study is a causal-comparative study with a target population consisting of all inpatient and outpatients of Fatemi Hospital and psychiatric clinics in Ardabil between December 2019 to February 2020, and June to July 2020 who were diagnosed with OCD or BD by professionals. Of those, a convince sample of 40 individuals with OCD, 40 with BD and 40 normal individuals was selected for research. The measures used in this study were Rachman and Shafran's Thought-Action Fusion Scale and Abbasi et al.'s Physical Health Questionnaire. Multivariate analysis of variance was performed using SPSS version 25 to analyze data. Results: Results showed statistically significant difference in physical health and its components between OCD, BD and normal patients (p<0.01). A similar significant difference in relation to thought-action fusion was also observed between the OCD, BD and normal groups (p<0.01). That is, normal people have less thought-action fusion than the other two groups. Conclusion: Based on the findings of the present study, we suggest that to specifically target cognitive biases in treating OCD and BD, the role of physical health and thought-action fusion should be taken into account.


A common point of concern for generator applications engineers is the often contradictory requirements for large turbine generators that frequently appear in grid codes or generator interconnection requirements and the relevant national/international equipment standards. These discrepancies sometimes occur even in those cases when the grid authority appears to have the same jurisdiction as the corresponding national standard. Sometimes, the requirements of grid codes/interconnection guidelines diverge with the requirements in the standards and it becomes necessary to overspecify the generator, leading to higher costs for the interconnector with no discernible operating benefit. In some cases, the adoption of a national grid code has led to adoption of more stringent requirements than those used for the existing generating fleet and raised the cost of new generators or resulted in the prohibition of effective and economic technologies. This paper discusses some of the more common discrepancies and points out some of the advantages of harmonizing grid codes and interconnection requirements with applicable national and international equipment standards for turbogenerators, and in accordance with accepted generating technologies.


In this paper, a sliding mode based Extremum Seeking (ES) control scheme is proposed to solve a class of multivariable optimization problems. This approach recasts the problem of multivariable ES control into a sequence of single variable ES control. Our approach is suitable for non-separable problems, differentiating itself from previous work in this area. We determine the stability and convergence conditions from the unidimensional case and derive a sufficient condition for the multivariable scheme to converge to the vicinity of the optimal points. We investigate the application of the proposed scheme to optimize energy production in wind farms. Simulations are provided to illustrate the theoretical results and demonstrate its potential use.


Abstract : Toughness and a toughness transition temperature for a crack-like notch are calculated for small-scale yielding corresponding to K sub Ic test conditions using a macroscopic material failure representation. This transition is the point about which the failure posiition changes from the notch tip to a subsurface position or vice versa. In lieu of an exact solution for stresses, three cases are treated to provide reasonable bounds. Case II appears to be quantitatively exact at sufficient distances from the crack tip. Case I. Stresses are from usual elasticity theory. Case II. Stresses are from usual elasticity theory, but strains are from a two-straightline stress-strain relationship and deformations and boundary movement may be large. Case III. Strains are from usual elasticity theory on the argument that even in the yielded region they are substantially contained within a fairly rigid elastic mass. The transition is found to be independent of the tip radius. Because of its simiplicity and consequent clarity, Case I is most extensively discussed. However, if the work-hardening rate of the notch material is very low, Case II must be employed. (Author)


As the mode of e-business is patterned widely, many small and medium enterprises need to rely on the database service provided by the third parties. Encryption techniques must be adopted to protect sensitive data from the service providers. A bucket-based storage technique addresses the scenarios with limit trust in database servers. However, when the buckets are constructed improperly, intruders could have a chance to guess the sensitive value distribution based on the bucket occurrences. In this paper, we propose a simple and adaptive method, named split and merge (SAM), to construct a set of buckets with balanced occurrences. The buckets with more occurrences are splitted in two parts and the neighbor bucket pairs with smaller occurrences are merged together. Some experiments are conducted to validate this method.


Aim: A study to assess the role of visual inspection with acetic acid VIA as an alternative to Pap smear in screening program for cervical cancer in low resource settings. Method: Two hundred and twenty five women in reproductive age group attending the Gynecology department at K.S Hegde Charitable Hospital were enrolled in the study. A Papanicolaou smear and visual inspection of the cervix with acetic acid was done. All women then underwent colposcopy using the video colposcope. All patients who tested positive on screening then underwent colposcopy guided biopsy. Pap smear of Low grade squamous intraepithelial lesion (LSIL) and above was taken as abnormal. The statistical test used was chi square test and results were computed using Statistical Package for the Social Sciences (SPSS) version 12.0. Results: Out of 225 patients, VIA was positive in 27(12%) patients and Pap smear was abnormal in 26(11.7%). There were 15 LSIL, 6 high Grade Squamous intraepithelial lesions (HSIL) and 5 were squamous cell carcinoma. On biopsy, there were 15 mild dysplasia, 2 moderate dysplasia, 4 severe dysplasia and 3 squamous cancers. Pap smear had a sensitivity of 83%, specificity of 98%, and positive predictive value of 80 % and negative predictive value of 97.9%. VIA had a sensitivity of 70.8%, specificity of 95%, and positive predictive value of 62.9 % and negative predictive value of 96.5%. Conclusion: Since diagnostic values of VIA is comparable to Pap smear, and it performs well in detecting high grade lesion we conclude that VIA can be used as a screening modality for cervical cancer in low resource settings. Keywords: Cervical cancer in low resource settings, Pap smear- colposcopy, visual inspection with acetic acid DOI: http://dx.doi.org/10.3126/njog.v6i1.5245 NJOG 2011; 6(1): 7-12


Speculation upon the supply, and upon the demand, 436.— Definition of the carryover, 436.— The demand curve, 438.— The supply curve, 438.— Yields and the weather, 439.— Price of a short crop, 441. — Of a bumper crop, 441.— The carrying charge, 441.— Effect of speculation on consumption, 442— On production, 442.— Equilibrium in a one-year's operation, 443.— In a several-years' operation, 446.— Number of years' holding needed, 447.— Saw-tooth course of prices in years without carryover, 448.— Solution by successive approximation, 449.— Corollaries, 450.— Speculation upon the demand, 450.— Note on probability, 452.


Objective:To investigate the effect of phentolamine and dopamine by continued micro-pump infusion for infants with severe pneumonia complicated by heart failure. Methods: 252 cases of infants with severe pneumonia complicated by heart failure were randomly divided into 2 groups. The patients of control group underwent conventional cardiac and diuretic treatment. Patients in experimental group underwent continued micro-pump infusion with phentolamine and dopamine based on conventional treatment. The clinical efficacy of the two groups after treatment was compared. Results: The proportion of markedly effective rate in treatment group was significantly higher than that in the control group, the difference was statistically significant(P0.01). The proportion of effective rate in the control group was significantly higher than that in the treatment group, the difference was statistically significant(P0.01). The proportion of invalid rate in the control group was significantly higher than that in the treatment group, the difference was statistically significant(P0.05). The time to correct heart failure, treatment to remission time, the treatment to the fine moist rales disappeared time, length of stay, and other observed indicators of the treatment group were significantly shorter than that in the control group, the difference was significant(P0.01). The cedilanid application number in treatment group was significantly less than that in the control group, the difference was statistically significant(P0.05). Conclusion: The treatment of phentolamine and dopamine by continued micro-pump infusion for infants with severe pneumonia complicated by heart failure is effective, and is satisfactory for the control of heart failure.


Abstract : The Combustion Science Branch (AFRL/PRTC) of the Propulsion Directorate, Air Force Research Laboratory, is actively involved in fundamental and applied combustion research and development. In order to do this, combustion models and optical diagnostic techniques are developed and used to understand fundamental combustion processes. This understanding is then used in the development of high-performance, low-emissions combustor and propulsion concepts. The latest modeling and diagnostic innovations are applied to the various combustion experiments to enhance fundamental understanding and improve the design of the particular combustor and propulsion concepts. This paper is a top-level look at the research activities and the facilities of the Combustion Science Branch.


In this article, a class of easy-to-implement semiparametric ordinary ridge estimators of regression coefficients is introduced. Their properties are investigated and simulation results are provided to investigate their behaviors when the error variances are small and relatively large, respectively. The semiparametric estimators outperform the Hoerl, Kennard and Baldwin (1975) estimator in the sense that they give less risk (total mean squared error). An empirical application is also presented.


This survey focuses on the recent application of Rhodamine derivatives in sensor analysis.As a fluorophore and chromophore probe,the Rhodamine fluorochrome has attracted considerable interest from analytical chemists on account of its super stability,wide analytical objects,high sensitivity,adjustable molecule structures and performances,reaction conditions of optimization.


Summary The effect of busulfan on murine erythropoiesis was studied following doses ranging from 10 to 100 mg/kg. The degree of depression of erythropoiesis was directly proportional to the dose of busulfan, as measured by hematocrit changes or by uptake of radioactive iron by spleen and marrow. The pattern of postbusulfan erythropoiesis was different from that seen after sublethal doses of whole body irradiation in some respects in that an abortive wave of erythropoiesis occurred in both marrow and spleen prior to onset of a more substantially sustained erythropoietic recovery. The pattern was like that following radiation in that the degree of reduction of erythropoiesis was directly related to dose as was the interval of time prior to onset of final recovery. In the spleen, this interval was 1 day per 20 mg/kg and in the marrow 0.5 days per 20 mg/kg.


Hyperparameter tuning is essential to achieving state-of-the-art accuracy in machine learning (ML), but requires substantial compute resources to perform. Existing systems primarily focus on effectively allocating resources for a hyperparameter tuning job under fixed resource constraints. We show that the available parallelism in such jobs changes dynamically over the course of execution and, therefore, presents an opportunity to leverage the elasticity of the cloud. In particular, we address the problem of minimizing the financial cost of executing a hyperparameter tuning job, subject to a time constraint. We present RubberBand---the first framework for cost-efficient, elastic execution of hyperparameter tuning jobs in the cloud. RubberBand utilizes performance instrumentation and cloud pricing to model job completion time and cost prior to runtime, and generate a cost-efficient, elastic resource allocation plan. RubberBand is able to efficiently execute this plan and realize a cost reduction of up to 2x in comparison to static allocation baselines.


The development of an experimental prototype of the single-mode waveguide CO/sub 2/ laser with a uniform output beam and estimation of the influence of active medium on the beam profile are described. By a choice of the optimum sizes of mirrors of the resonator and multimode waveguide, variation of number of both sizes of absorbing grooves and reflecting rings on the aperture of the amplitude-stepped mirror (ASM), it is possible to achieve essential diminution of diffraction losses of the fundamental mode and to increase uniform of an output radiation beam profile.


Motor neurone disease is associated with rapid disease progression and disability, and receiving a diagnosis can cause shock and fear in the patient and their carers. Prompt access to services and psychological support are important to improving quality of life in individuals with motor neurone disease and their carers. The early-access Living Well support group, led by an occupational therapist and a registered nurse, was developed to support people with motor neurone disease and their carers. The objective of this study was to explore the carers' lived experiences of being part of this support group. Qualitative semi-structured interviews were conducted with eight carers who attended the Living Well group, using a phenomenological research design. These carers had attended a minimum of two sessions with a relative with motor neurone disease. Thematic analysis was used to examine the data. Five key themes were generated from the study: diagnosis and fear of hospice; being human; connection with others; escapism; and access to expertise. These themes emphasised the importance of personalisation of support groups that meet the specific needs of those living with motor neurone disease and their carers. The findings of this study have implications for palliative care services and occupational therapists who work to improve the quality of life for people living with motor neurone disease and their carers. A more holistic approach towards palliative care, including the involvement of carers in support groups similar to Living Well, is strongly recommended.


The Internet is increasingly becoming a forum for criminals such as organised crime syndicates, paedophiles etc to commit crime, as well as facilitating crimes through the fast and easy distribution of digital information on a potentially global scale. This presents a special problem for the investigators of such crimes, as a very different type of evidence must be considered. More specifically, in crimes of child abuse and paedophilia, offenders use the web as a conduit for transmitting indecent images of children and those portraying the abuse of children. When it comes to identifying the offenders featured in theses images often the only parts investigators have to work with are the offender's hands or genitals. This limited photographic evidence has stimulated the need for methods to analyse this type of data and the development of empirical data and information that could be of significant investigative value and assistance in the judicial process. The aim of this project is to determine if hand shape is directly related to handedness and individual identity. In addition to this, the project will endeavour to show whether hand shape and size can be related to sex. The study will examine how hands can be used as a tool for identification of sex offenders, particularly using geometric morphometric shape analysis to make a quantitative assessment of hand shape. It uses the database held by the Centre for Anatomy and Human Identification of 302 images of 151 volunteers' hands. This study will focus on the palmar aspect of the hand shape, as the dorsal outline is likely to be distorted in those individuals with long nails. The results of this study should provide the foundation of a novel type of evidence in the field of human identification and additional empirical data that will help to support the admissibility of such techniques. With the creation of the Metropolitan Police Paedophile Unit there has been recognition of the increased resources required to catch and persecute criminals who target vulnerable children. It is therefore important for research to be done into developing new and reliable techniques. The generation of empirical data will make these new types of evidence more reliable and therefore more likely to be deemed admissible in Court.


The article is devoted to the problems of protection against viruses and malicious programs of computers, electronic devices and computer networks in accounting systems. The purpose of the article is to reveal the extent of damage that viruses can cause, to analyze and identify the best anti-virus programs operating today in Ukraine, to determine their ability to prevent and eliminate possible threats from the action of viruses in accounting systems. A set of well-known scientific methods and techniques was used to achieve the research goal and solve the relevant problems: the abstract-logical method, the method of logical synthesis, methods of analysis and synthesis. The abstract- logical method was used for generalization, formulation of conclusions and recommendations. The method of logical synthesis was used to theoretically justify the importance of studying the problems of protecting modern accounting systems from computer viruses. The methods of analysis and synthesis made it possible to determine a number of modern antivirus programs recommended for use in Ukraine to protect databases in accounting systems. The study analyzed the damage caused by the penetration of viruses into computers and determined measures to stop the spread of viral software products. The problem of virus infection in various spheres of human activity, including in accounting systems, is highlighted. The classification of antivirus programs is presented, among which such types of programs as "detectors" (scanners), phages, auditors, guards, and vaccines have become the most widespread. Examples of the largest virus attacks in the history of the development of information technologies in various countries of the world are given. A comparative analysis of various anti-virus programs was carried out and ways to ensure comprehensive protection of the computer against any cyber threats were determined. It is justified that the best antiviruses recommended for use in Ukraine are such programs as: Norton 360; Avast Free Antivirus; Avira Free Antivirus; McAfee Internet Security; F-Secure SAFE; ESET NOD32. It has been proven that the development of measures to protect programs and databases in accounting is an urgent task today. The most effective antivirus programs were determined and their mechanism of searching for different types of viruses was considered. Information on antivirus prevention of computers, computer networks, databases in accounting systems is covered in detail.


Ripples of hope have emerged in recent weeks, with the possibility of a working covid-19 vaccine. There are still many hurdles—demonstrating safety and efficacy, overcoming production challenges, and convincing the public amid a torrent of fake news and anti-vaxxer rhetoric. But an overarching optimism has arisen, after the tough months the world has lived through this year.

The next phase will be hugely important for the NHS—delivery. Expect heated discussions around who will get a vaccine "first": if it's healthcare professionals, why not teachers or shielded groups? As ever, the debate will be played out in public, shot through with politics, bias, and vested interests. We must also consider the practicalities of delivering the vaccine during a …


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In order to comprehensively understanding the publication status and periodical quality of Chinese core periodicals of agricultural sciences,the difference of publication indicators,citation indicators and impact factors of nine agricultural scientific periodicals from 2009 to 2011,which were involved in GCJC 2011,were comparatively analyzed by bibliometric method.Results:Guangdong Agricultural Sciences was of the highest citable literature volume,1 516 papers per year.The proportion of citable literatures ranged from 0.90 to 0.99.Scientia Agricultural Sinica and Xinjiang Agricultural Sciences were of the highest fund paper rate,both were 100%;Jilin Agricultural Sciences and Scientia Agricultural Sinica were of longer cited half life,respectively 7.0years and 6.0years.Scientia Agricultural Sinica was of the highest cited periodical quantity,817 periodicals on average.Hubei Agricultural Sciences was of the highest citation index(1.9);the composite impact factor and composite other-people quoted impact factor of ScientiaAgriculturalSinica were the highest during 2009-2012,respectively 2.016~2.241 and 1.847~2.071.