 be satisfied if the arbitrary functions f R, g,Θ The last equation in (62) has two solutions and The case (63) seems to be the simplest for further analysis. In that case the IC (59) are reduced to the form Then, as a result of (61), we find the single IC dα (u) which is identically satisfied using the second relation in equation (60). Thus, the total set of the IC's under consideration is reduced to the set which has the following solutions where η (u) (τ, σ) and η (v) (τ, σ) are atbitrary functions. The last IC in (69) is easily satisfied choosing which gives the following representation forα where β(η (v) ) is an arbitrary functions.
In the next section we shall discuss an example of string motion arising from the above equations.
7. An example of the string motion in the extended space-time To get an example of string motion let us fix the function β(η (v) ) in the solution (71) by the condition β ′ (η (v) ) = 1 which gives and then the total set of the integrability conditions is satisfied.
The final equations (43) corresponding to the solutions (72) and (69) and describing the string dynamics take the simple form (73) To analyse Eqs.(73) we note that the spinor subset has the general solution where u 0α and v 0α are arbitrary constant spinors. Substituting the solutions (74) into the constraints (6) results in the same constraints for both dyads u α 0 and v α 0 and implies Θ (v) So, we find that for the presented example the whole dynamics of the dyads u α and v α is reduced to phase transformations It follows from the solutions (77) that The conditions (78) essentially simplify equation (73) for the string world vector x αα transforming it into the equation which has the following general solution where η (u) and η (v) are arbitrary functions on the worldsheet. According to Eqs.(69), which now take the form one finds from (42) and (81) that so that the expected condition (31) det Σ = 0, is satisfied for the solution (80) and the induced worldsheet metric of the tensionless string becomes regular. As the vectors tangent to the worldsheet are constant light-like vectors we conclude that the worldsheet (10) lies in the plane spanned by the light-like vectors A m and B m and the general solution of (85) is The solutions (80) and (86) can be interpreted as solutions of the two-dimensional wave equations which may be presented in the form where X M = (x m, z mn ) are generalized coordinates in the extended D=10 space-time. The wave equation (88) implies that the coordinates z mn have an interpretation similar to that for the x m namely as additional string coordinates in the generalized D=10 space. After the substitution of the solution (86) into the representation for z mn we find the appearance of the spinorial structures (u 0 σ mn u 0 ), (v 0 σ mn v 0 ) and (u 0 σ mn v 0 ), which correspond to the spin degreees of freedom distributed along the string worldsheet. These spin factors are multiplied by the functions which are solutions of the wave equation (88). Therefore, we may understand the solution (86) as describing a spin wave process associated with the z mn degrees of freedom.

Conclusion
We have suggested a new model for strings embedded into D = 4 space-time extended by 6 additional coordinates z mn corresponding to the tensor central charge Z mn. In studying the simplest case of a tensionless string we found that presence of the z mn coordinates lifts the degeneration of the worldsheet metric typical for the tensionless string. We found a solution of the model which gives an example of string dynamics in the extended D = (4 + 6)-dimensional space. For this solution the x m -coordinates do not develop transverse oscillations. To understand if this result is general or if the x m coordinates also can oscillate we need to analyse the general solution to the integrability conditions derived here or/and to extend the minimal model. On the other hand, the evolution of the z mn coordinates may be understood as a spin wave process assosiated with an excitation of spin degrees of freedom distributed along the string.
The next step is to study the general case of the tensile string described by the general action (14) with the spin-tensor p ab given by (9).
The supersymmetrized version of the model is found by going from the differentials dx m and dz mn to the supersymmetric invariant differential Cartan forms Π m and Π mn in the general representation (14) or (16) and adding a Chern-Simons three-form [26]. Therefore, an example of a superstring action in D = 4 space-time extended by the coordinates z mn is where the constant c may be zero. The extended superalgebra with tensorial central charges Z mn arising from the superstring action (89) (and/or its brane-generalizations) may contain new information on the preserved supersymmetry. An investigation of this is in progress.University College Dublin has been fined €70,000 following several personal data breaches of University email accounts. The fine came after the Data Protection Commission (DPC) received 7 separate breach notifications by UCD between August 2018 and January 2019.
The seven occurrences involved the unauthorised access by third parties to UCD email accounts. In some cases, these login credentials were posted online, others involved users “furnishing their credentials” from external websites, the DPC has reported. UCD was unable to identify how other accounts had been compromised. These breaches were discovered by UCD when spam was reported to have been sent from University email accounts. The online application?haveibeenpwned.com? was also used in identifying the source of this unauthorised activity.
The investigation, some of which took place on-site, officially reprimanded and fined UCD for failure to implement appropriate General Data Protection Regulation (GDPR) measures, for storing data longer than necessary, and finally for failure to appropriately notify the DPC following these occurrences. The further infringement of GDPR occurred when UCD failed to bring one of the cases to the DPC for 13 days after its occurrence, breaching Article 33 of GDPR, which states that the controller must notify the supervisory authority no later than 72 hours after having become aware of the breach.
The breaches have occurred following the revised General Data Protection Regulations, which came into legislation in May 2018 and are designed to strengthen and unify the protection of personal data across the EU. This is the sixth GDPR fine imposed by the Data Protection Commission (DPC), which is the Irish supervisory authority for GDPR.
A UCD spokesperson commented that the college “accepts the decision of the Commissioner for Data Protection” and that the university has addressed the decision ordered by the DPC with a “programme of action” following this breach of UCD security systems.
The occurrence has placed University College Dublin as the first third-level institution to receive a fine from the Data Protection Commission. Separate investigations are underway concerning other third-level institutions, namely the University of Limerick and Maynooth University.
If students suspect any unusual activity regarding their UCD accounts, there are several resources available to investigate such issues, with contact services listed on the UCD website.Have I killed my router?

I just bought a used cheapo craftsman router and table to try my hand at woodworking. The router w working, but the router wasn't moving within the cuff you rotate to adjust the depth. I sprayed some cooking oil on it, not a lot and it's not anywhere other than on the threads. The router height still won't adjust - I think the threads may be out of alignment - and now the router won't start. Power is going to the table, everything is plugged in, but nothing happens when I turn on the switch. I've also tried plugging the router directly into the extension cord, nothing.From handshake to high five, our support and service team has one goal in mind: your absolute success.
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