text:
More monitors are installed on the River Derwent after more dead fish wash ashore.
Topics: fish, rivers, hobart-7000
Posted| Updated
Scientists discover that big sections of riverbank along the lower Murray in SA collapsed during drought over the past decade not because they were drying out and hardening, but because the riverbanks were heavy and retaining moisture.
Topics: murray-darling-basin, rivers, environmental-impact, environment, research, murray-bridge-5253, adelaide-5000, sa, renmark-5341
Posted| Updated
Topics: rural, mining-rural, rural-women, sheep-production, beef-cattle, goat-production, mental-health, mens-health, womens-health, rivers, pest-management, deserts, air-transport, broken-hill-2880
A rare freshwater turtle species may soon become extinct because of a mystery virus in the population on the NSW mid north coast.
Topics: conservation, rivers, reptiles, animal-science, bellingen-2454
Topics: rivers, ecology, environmental-impact, environmental-management, water, water-management, rural, ross-7209
Melbourne's iconic Yarra River is at risk of being 'strangled' by development from housing, despite efforts to clean it up, its riverkeeper says.
Topics: rivers, environment, environmental-management, environmental-policy, environmental-health, state-parliament, local-government, melbourne-3000
Posted| Updated
Authorities have resorted to aerial bait drops after severe weather trashed the wild dog fence between South Australia and New South Wales.
Topics: rural, pest-management, environment, sheep-production, rainfall, rivers, broken-hill-2880
The NSW Government has pledged $1.25 billion to improve water supplies in country towns, if it wins the election. Read more
Topics: water-management, water-supply, rivers, irrigation, dubbo-2830
A medical specialist who has semi-retired in the Great Lakes Shire says public health in the region will benefit from cleaning up the marine environment.
Topics: rivers, environment, health, tea-gardens-2324, newcastle-2300
The Environment Department says dredging will continue at the mouth of the River Murray after it reopens tomorrow morning.
Topics: rivers, environmental-management, renmark-5341
A new oxygenation plant on Perth's Canning River is expected to reduce the chance of algal blooms and fish kills upstream from the Kent Street weir in the southern suburb of Ferndale.
Topics: environmental-management, environmental-technology, rivers, ferndale-6148, perth-6000
Topics: rivers, environmental-management, environmentally-sustainable-business, dairy-production, land-management, land-clearing, bega-2550, nsw, dalgety-2628
Topics: rivers, environmental-management, environmentally-sustainable-business, dairy-production, land-management, land-clearing, bega-2550, nsw, dalgety-2628
Josh Becker talks to Luke Pope (LLS) and Antia Brademann from Cooma Water Watch about managing paddocks near rivers around Dalgety in the south east of NSW. Read more.
Topics: rivers, environmental-management, environmentally-sustainable-business, dairy-production, land-management, land-clearing, bega-2550, nsw, dalgety-2628
Posted| Updated
Farmers have seen major improvements in paddocks along the Snowy River in NSW.
Topics: rivers, environmental-management, environmentally-sustainable-business, dairy-production, land-management, land-clearing, bega-2550, nsw, dalgety-2628
Quality groundwater supplies are yet to be found at the Menindee Lakes, months after drilling began.
Topics: water-management, rivers, murray-darling-basin, regional, broken-hill-2880, menindee-2879
A ministerial taskforce, set up to oversee water management and water quality in the Vasse-Wonnerup Estuary, in south-west Western Australia, is set to hold its second meeting next month.
Topics: water-management, environmental-management, rivers, water, states-and-territories, vasse-6280, bunbury-6230, wonnerup-6280
Topics: weather, rivers, water-pollution, floods, byron-bay-2481, lennox-head-2478
Posted| Updated
Indigenous groups say they want to meet with the new Murray-Darling Basin chair and Federal Government to bring about water justice for Aboriginal people.
Topics: indigenous-policy, indigenous-culture, water-management, irrigation, murray-darling-basin, rivers, environmental-policy, canberra-2600
Researchers will track 2,000 turtle hatchlings in South Australia's Riverland to see why the population is rapidly declining.
Topics: endangered-and-protected-species, environmental-management, rivers, animals, barmera-5345
Topics: water-pollution, rivers, human-interest, murray-darling-basin, shepparton-3630, wodonga-3690
Posted| Updated
Authorities say the lower Darling River will run dry in coming weeks, and landholders are seeking help with emergency water works.
Topics: rural, livestock, environment, rivers, water-supply, pooncarie-2648, broken-hill-2880
Posted| Updated
More than 8.7 kilometres of fishing line and 1,743 hooks and sinkers are removed from the Swan and Canning rivers in moves to minimise marine life entanglement.
Topics: rivers, environment, fishing-aquaculture, perth-6000
Topics: rivers, rural, tennant-creek-0860
Posted| Updated
The stuffed and mounted Murray cod that adorn pub walls across Australia are the subject of a new investigation by a NSW ecologist.
Topics: fish, murray-darling-basin, rivers, wagga-wagga-2650, nsw, bega-2550


text:
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In "Pianura Padana", Po Valley, poplars plantations are widespread for wood production. The 360 photo shows one of such plantations under the snow. It was shot in Binasco, a relatively small municipality in the south of Milan.
The area of current Lombardy was settled at least since the 2nd millennium BC, as shown by the archaeological findings of ceramics, arrows, axes and carved stones... continues on wikipedia

subset: commoncrawl


text:
A target tracking device incorporating a Position Sensitive Detector (PSD) 1 is described. A target is illuminated by a laser of a suitable wavelength. The target reflects the laser radiation and the reflected radiation is incident on a flying vehicle carrying a target tracking device. The PSD in the device outputs a signal representative of the position of the incident laser spot. The output signal is input into control electronics, the control electronics incorporating a resistive transimpedance amplifier. A higher than usual bias voltage is applied to the PSD yielding improved pulse response of the target tracking device. Therefore, the tracking device is particularly suited for use with a target marking laser having a short pulse duration.
1. A target tracking device for a flight vehicle including a position sensitive detector, for detecting radiation reflected off the target, the detector having at least two signal outputs, the signal outputs being processed by control electronics, the control electronics sampling, amplifying and optimising the impulse response of the position sensitive device such that the flight vehicle is guided toward the target.
2. A target tracking device according to
3. A target tracking device according to
4. A target tracking device according to
5. A target tracking device according to
6. A target tracking device according to
7. A target tracking device according
8. A target tracking device according to
9. A target tracking device according to
10. A method of tracking a target comprising the steps of
(a) illuminating the target with radiation of a suitable wavelength;
(b) detecting radiation reflected or emitted by the target using a position sensitive detector;
(c) inputting the pulses output by the position sensitive detector in response to the incident radiation, into a resistive transimpedance amplifier; and
(d) analysing the data output by the amplifier using suitable control electronics, the subsequent data produced being used to alter the trajectory of a flight vehicle incident on the target.
11. A method according to
12. (canceled)
The invention relates to a target tracking device. More specifically, but not exclusively, the invention relates to a target tracking device comprising a position sensitive detector, thereby enabling a fast response time of the device.
Simple flight vehicles, such as gliding or guided bombs or defense rockets can be directed to their targets with the aid of a laser guiding system. An operator �lights� a target with suitable radiation and the tracking device detects the radiation spot on the target and guides the flight vehicle towards the target. In order to detect the radiation on the target, a target guiding device can comprise a detector for example, a quadrant detector, where the radiation is incident on four detector cells. The flight vehicle is directed toward the target such that the same parts of the radiation spot are imaged on the four detector cells. However, as such a narrow non-detecting area is arranged between the detector cells, the target tracking can result in errors.
Alternative detectors have been proposed. For example GB-A-2415310 discloses a target tracking device utilising a Position Sensitive Detector (PSD) in an integrating pre-amplifier system. In such a configuration, pulses output by the PSD in response to the incident radiation are integrated and, after some signal processing by control electronics, a control signal is output, capable of directing the flight vehicle toward the target.
It is a disadvantage of a device incorporating a PSD that integrating pulses can result in energy loss, particularly in the energy not immediately detected as the pulse time is short but the response time of the PSD is relatively long.
According to the invention there is provided a target tracking device for a flight vehicle including a position sensitive detector having at least two signal outputs, the signal outputs being processed by control electronics, the control electronics sampling, amplifying and optimising the impulse response of the position sensitive device.
According to the invention, there is further provided a method of tracking a target comprising the steps of:
(a) illuminating the target with radiation of a suitable wavelength;
The invention will now be described with reference to the following diagrammatic drawings in which;
The use of a resistive transimpedance amplifier in association with a PSD provides several benefits. Firstly, the above mentioned system produces an impulse output based upon a high percentage of the energy in the input pulse thus improving the temporal response and hence improving the estimate of the position of the true target. Studying the impulse response output enables the system to resolve discrete pulses of very short duration, for example 20 nanoseconds.
The PSD experiences a higher bias voltage which may decrease the lifetime of the overall device. However, use of an unusually increased bias voltage further improves the response of the system by increasing the percentage of incident energy collected from a pulse of a given duration. This unexpected response can require the PSD to be operated outside limits specified by the manufacturers of the PSD. However, this results in the improvements described above.
Additionally, the bias voltage applied may then be used as a dynamic range control for the device.
The power supply for the device may be standard 12V, �5V, 3.3V and 3V supplies. However, power supply filtering is not essential.
The PSD bias voltage may be generated externally and provided to the device. This is to enable maximum test flexibility. Note that the control electronics may provide the necessary PCB area and tracking to retrospectively implement a bias generation circuit within the device. In this case the bias voltage would be derived from the 12V supply.
The PSD used in the target tracking device in this embodiment of the invention is optimised for 1064 nm radiation. However, it will be appreciated that any suitable PSD may be used and its mechanical and electrical properties optimised for any other suitable wavelength of radiation. However, it should be noted that corresponding optimisation of the control electronics may be required.
The device shall be optimised for 1064 nm radiation but may be optimised for any other suitable radiation.
Preferably, the optical lens system should give the PSD a 20��20� field of view. If possible alternative interchangeable optics should be available to allow the system to also have a 10��10� field of view. If a 20��20� field of view cannot be feasibly achieved then the 10��10� field of view can be used as the primary requirement.
It will be appreciated that these values are specific to a first form of the invention. However, the device may be used with an optical system of appropriate design to suit the specifics of the application.
A narrow bandpass filter may be used to limit the number of spurious signals and noise that the PSD receives. Preferably, a narrow pass band with nominal centre wavelength 1064 nm filter shall be included in front of the optics. The filter bandwidth should be 40 nm FWHM.
Preferably, total transmission at 1064 nm shall exceed 70% and should exceed 80%.
Whilst the optical focus of the system is not a key issue (as the PSD output is related to the energy centroid) any defocus should be as circularly symmetrical as possible and the spot size should be less than 1% of the PSD size.
It will be appreciated that the description above is one embodiment of the invention. Additional features, for incorporation into the device, that add functionality to the fundamental invention will now be described.
The bias voltage applied to the PSD may be varied in real time in response to the signal level the target tracking device is receiving. By lowering or raising the bias voltage as appropriate the PSD can be kept at the optimum sensitivity for longer or enable the dynamic range of the system to be increased.
The PSD will have an optimum temperature to operate at for best sensitivity. By attaching a thermoelectric cooler/heater (or by some other method) the PSD could be kept at this temperature at all times (or at specific times deemed best for a particular application). An additional benefit of this is that the PSD could be made to operate over a greater range of external environmental conditions.
Due to the physical size of the device and the fact that the radiation spot will be falling on different parts of the device there could be a slight difference in time between the read outs of the signals coming out of each side of the device. For example if the laser spot falls near the left edge of the device the signal will perhaps appear on the left electrode slightly before the right electrode. Therefore, the actual temporal response characteristic of the device may vary to a useful extent across the device due to the inherent variation in impedence across the PSD active area. Therefore measuring the temporal behaviour of the output will give a means of determining the incident position of radiation independently of the output magnitude values. It is possible that this slight timing difference could be used to improve the standard position measurement made by the PSD.
The raw accuracy with which the position of the incident radiation can be measured will inherently be optimised within a given range of incident signal magnitude. To maintain the optimum signal level for the device the standard method of gain ranges could be augmented with constantly varying attenuation of the optical signal via an iris or any other physical means of reducing the signal reaching the PSD.
Furthermore, the PSD could be hybridised with the amplifier circuitry to provide some speed of read out advantage and reduction of noise on the signal.
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The woman's boyfriend was also arrested after he allegedly took photographs of the sex acts with the dog
The Philadelphia Inquirer
MILFORD, Delaware — Delaware state police are investigating allegations of bestiality in Milford, Delaware.
Police arrested a woman on charges that she had sex with a dog inside her home west of Milford, according to an AP report.
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Full story: Police: Woman had sex with dog, boyfriend took photos
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text:
Almost Batman Mall Grab T-Shirt
Item # 238292
Buy 1 Get 1 50% off
Stash Points: 2,499
What is this?This is the number of points you get in The Zumiez Stash for purchasing this item. Stash points are redeemable for exclusive rewards only available to Zumiez Stash members. To redeem your points check out the rewards catalog on thestash.zumiez.com.
Update your style with an iconic Batman holding an Almost skateboard graphic screen printed at the chest.
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No•vum Or•ga•num
Pronunciation: (nō'vum ôr'gu-num, ôr-gä'num, -gan'um; Lat. nō'woom ōr'gä-nOOm"), Strict Standards: Non-static method FenSites::linkTo() should not be called statically in /site/html/dictionary/novum-organum.html on line 89 [key]
a philosophical work in Latin (1620) by Francis Bacon, presenting an inductive method for scientific and philosophical inquiry.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.


text:
Your Green Bay Packers: Telling It Like It Is
Sep 1st
Posted by Monty McMahon in contests
We've got a great opportunity for you here today at Total Packers — you can win a $100 gift certificate from CSN Stores to use on anything you want. CSN has more than 200 stores, where you can buy anything from kitchen tables to the biggest goddam grill you've ever seen. You can also buy […]
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text:
search for a card
Result of the search for the collectible card:
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The following 5 users match with the requested search. Click on their names to contact them.
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text:
Deviant Art
Bedtime StoriesBedtime Stories3 years ago in Romance More Like This
'Right,' she answered, draining the last of her soup. 'I'm going to bed. Good night everyone,' Katara said, her mind reeling with everything. She could already feel the anxiety about the book unravelling her.
'Really? It's so early!' Suki exclaimed. She sounded as if she was trying to balance a mixture of urging Katara to stay, and sounding surprised at her haste to be detached from their little group. Suki knew. She must. How was it that boys were so oblivious about girl's feelings yet girls were always so dead on?
'It is early for bed Katara,' Toph sneered.
'I'm tired. What with all this drama. Night,' Katara gave Suki a fleeting rueful smile, Toph a small scowl and traipsed to her room.
She curled up on her bed and slipped under the covers, gently removing the clothes from her worn body. As she shimmied under the sheets the realised how cold it was. The night before, she was wrapped in Zuko's warmth. As a firebender, he was obviously going to be warm but Katara had no idea how relie
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text:
SportChassis entering Australian market
SportChassis in Clinton will soon be converting Freightliner one-and-a-half ton trucks to be driven on the right-hand side for the international market.
SportChassis in Clinton will soon be converting Freightliner one-and-a-half ton trucks to be driven on the right-hand side for the international market.
Spring planting season may be here, but Clinton residents remain under a stiff no-outside-watering policy that was adopted last fall.
Oil and gas leasing has basically stopped in this area for the moment, Clinton attorney Mart Tisdal told the approximately 100 people who attended last week's Oklahoma Mineral Owners Association me
Clinton police believe they have solved some major residential thefts in the north part of town, thanks to work by a number of officers and information from citizens.
Earthquakes were a recurring topic at Saturday's state meeting of the Oklahoma Mineral Owners Association held at the Frisco Center in Clinton.
Eight months and 12 days after entering the Cleveland Clinic in Cleveland, Ohio, C.B. Graft came home Thursday to cheers and waves from well-wishers lining the road to his west Clinton home.
During her presentation recently to members of the Custer County TRIAD, Clinton Regional Hospital Director of Volunteers Debbie Matz dispelled preconceived notions about the hospital's Lifeline pro
It appears that at least 40 households in Custer County will soon receive monetary help to put in new tornado saferooms, Emergency Management Director Mike Galloway said this week.
Custer County voters will be busy April 7 with special elections in communities across the county, Custer County Election Board Secretary Ann Brown said.
While not giving up on the idea, Custer County commissioners appear to have softened slightly their position on asking voters to extend the half-cent jail sales tax and convert it to roads and brid
Clinton is truly becoming a tourist destination city as up to 1,000 people a day have been flocking into Clinton's Water-Zoo indoor water park as Spring Break has geared up.
A New Mexico law firm has submitted a $25-million claim to Custer County and the State of Oklahoma on behalf of the estate of Mah-hi-vist Goodblanket and his parents, Wilbur and Melissa Goodblanket
A poster depicting all the Presidents of the United States who were wrestlers adorns the office window of head coach Shawn Finch, where it faces the Clinton High wrestling room for all his grappler
Clinton High School Legal Teams have kicked off their season with scrimmages against other schools, teacher coach Kathy Kelley said.
Arapaho-Butler basketball teams weren't the only residents of their towns who had a busy weekend;
522 Avant Avenue
Clinton, OK 73601
Phone: 580-323-5151
Fax: 580-323-5154


text: I am new to Open Source. To prove it, I am confused about hard drives. I see so many references to multiple hard drives, but manufacturers websites only speak of external hard drives as either storage or back-up devices. All the Open Source information I have read makes me think that an external hard drive in a USB can have a bootable OS on it. Can someone enlighten me?


text:
Chiropractic Adjustments keep these vertebra moving so that we are pain free, decrease muscle tightness, healthy disc, free of headaches and keep our entire spine mobile so we can live at our bodies best. Have your spine checked out to see where or if you have any of these restrictions!
More About Our Company
Welcome to Jones Family Chiropractic where we are achieving optimal health for all of our patients one adjustment at a time. We are in a private building located across from bear creek plaza with lots of parking and close to all major freeways. Our office is a warm family business where we treat you like one of our own.Read More
Recent Blog Posts
March 25, 2015 |
Chiropractic Brings Better Birth Outcomes
Chiropractic during pregnancy is an important part of prenatal care. Unfortunately, not enough women know of the...
March 2, 2015 |
10 Researched Benefits of Chiropractic Adjustments
If you haven't visited a chiropractor before, you might be missing out. Millions of people around the world have...
February 25, 2015 |
Car Accident Myths
MYTHS There are countless myths in the world of car accidents: #1 – Fakers, Frauds, and Phonies...
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January 14, 2015 |
Chiropractic Before Resorting to Surgery
In an article written to educate the public about back pain, the Journal of the American Medical Association...


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