Linearizing N = 3 nonlinear supersymmetry in two dimensions

We investigate for N = 3 supersymmetry (SUSY) in D = 2 the algebraic relation between the Volkov-Akulov (VA) model of nonlinear (NL) SUSY and a (renormalizable) SO(3) vector supermultiplet of linear (L) SUSY. We derive SUSY and SO(3) invariant relations between component fields of the vector supermultiplet and Nambu-Goldstone (NG) fermions of the VA model at leading orders by using three arbitrary dimensionless parameters which can be recasted as the vacuum expectation values of auxiliary fields in the vector supermultiplet. Two different irreducible representations of SO(3) super-Poincar\'e symmetry which appear in the same massless state are compatible with each other in the linearization of NL SUSY. The equivalence of a NL SUSY VA action to a free L SUSY action containing the Fayet-Iliopoulos (FI) D term which indicates a spontaneously SUSY breaking is also discussed explicitly according to the SUSY invariant relations.Comment: 7 pages, Late

Moment properties of estimators for an extreme value regression model with type 2 censoring

An extreme value regression model for grouped data with type 2 censoring is considered. The response variable is taken to have a type 1 ext reme va lue d i s t r i b u t i on for sma l l e s t v a l ue s a nd a s tandar d linear regression model is assumed f o r t he means . Large sampl e approximations to the variances of the maximum likelihood estimators are derived. The small sample moment properties of the maximum likelihood estimators are evaluated by simulation for the case of simp l e l i n e a r r e g ress i o n . T h e r e sul t s s h o w t h a t t h e e stima t or o f the scale parameter has a s t rong bias in sma l l samples, particularly when ther e is a heavy degree of censoring. Final l y , sma l l sample variance and mean square error efficiences of the best linear unbiased estimators relative to the maximum likelihood estimators are assessed

Recent results of high-energy spin phenomena of gluons and sea-quarks in polarized proton-proton collisions at RHIC at BNL

The STAR experiment at the Relativistic Heavy-Ion Collider at Brookhaven National Laboratory is carrying out a spin physics program in high-energy polarized proton collisions at $\sqrt{s}=200\,$GeV and $\sqrt{s}=500\,$GeV to gain a deeper insight into the spin structure and dynamics of the proton. One of the main objectives of the spin physics program at RHIC is the precise determination of the polarized gluon distribution function. The STAR detector is well suited for the reconstruction of various final states involving jets, $\pi^{0}$, $\pi^{\pm}$, e$^{\pm}$ and $\gamma$, which allows to measure several different processes. Recent results suggest a gluon spin contribution to the proton spin at the same level as the quark spin contribution itself. The production of $W$ bosons in polarized p+p collisions at $\sqrt{s}=500\,$GeV opens a new era in the study of the spin-flavor structure of the proton. $W^{-(+)}$ bosons are produced in $\bar{u}+d\;(\bar{d}+u)$ collisions and can be detected through their leptonic decays, $e^{-}+\bar{\nu}_{e}\;(e^{+}+\nu_{e})$, where only the respective charged lepton is measured. Results of $W^{-(+)}$ production suggest a large asymmetry between the polarization of anti-$u$ and anti-$d$ quarks.Comment: 8 pages, 8 figures, Invited plenary talk at QCD Evolution Workshop (QCD2013), May 6-10, 2013, Thomas Jefferson National Accelerator Facility, Newport News, VA, US

Educación para el desarrollo y para la sostenibilidad. Acercando propuestas en el marco del EEES

L a s i nt e rre l a c i one s e nt re l a E duc a c i ón pa ra e l D e s a rrol l o, l a E duc a c i ón pa ra l a S os t e ni bi l i da d y pa ra e l D e s a rrol l o S os t e ni bl e ha n c ons t i t ui do un punt o c l a ve pa ra l a de fi ni c i ón de l os c urs os de pos t gra do de l a U ni ve rs i da d P ol i t e c ni c a de Ca t a l uña (U P C) a da pt a dos a l nue vo E s pa c i o E urope o de E duc a c i ón S upe ri or. L os e nfoque s m á s c e rc a nos a l a c oope ra c i ón pa ra e l de s a rrol l o y l os m á s propi os de l a s os t e ni bi l i da d c ont ri buye n de m a ne ra c om pl e m e nt a ri a y de c i s i va e n l a form a c i ón de l os profe s i ona l e s l l a m a dos a t ra ba j a r e n t a re a s de de s a rrol l o, ya s e a e n pa í s e s de l S ur o de l N ort e , y a a c t ua r re s pons a bl e m e nt e de s de l a s pos i c i one s t é c ni c a s que de ba n a s um i r. E n l a U P C e l i m pa c t o de l os di s t i nt os e nfoque s e n l a c onfi gura c i ón de l os c urs os de pos t gra do e s e l re s ul t a do de un proc e s o pa rt i c i pa t i vo que ha i nvol uc ra do t a nt o l a ofe rt a form a t i va de gra do e xi s t e nt e (funda m e nt a l m e nt e a t ra vé s de a s i gna t ura s de l i bre e l e c c i ón) c om o l a ofe rt a form a t i va de pos t gra do y de i ni c i a c i ón a l a i nve s t i ga c i ón (a t ra vé s de l os progra m a s de doc t ora do e xi s t e nt e s ). E l a ná l i s i s que a quí s e pre s e nt a i nt e nt a , por un l a do, pone r de m a ni fi e s t o l a s ra í c e s e duc a t i va s e n l a s que s e ba s a e l proc e s o, que s e e nc ue nt ra n e n l a s di fe re nt e s pe rs pe c t i va s de l a s “ e duc a c i ón pa ra ” , y, por ot ro l a do, pre s e nt a r bre ve m e nt e c om o e s t os funda m e nt os s e a rt i c ul a n e n l a c onfi gura c i ón de l os c urs os de pos t gra do ofi c i a l e s de fi ni dos por l a U P C ha s t a l a fe c ha (di c i e m bre 2006)Postprint (published version

The PRECIS-2 tool has good interrater reliability and reasonable discriminant validity

This work was supported by the Chief Scientist Office (CSO) of Scotland grant CZH/4/773, the UK Medical Research Council and the University of Dundee work through the provision of a stipend for KL and from the Health Services Research Unit at the University of Aberdeen, which is core funded by the CSO of the Scottish Government Health Directories. We are grateful to all the participants who assisted in this study: F Althabe, A-W Chan, D Altman, D Bratton, E Brass, M Campbell, G Forbes, B Gaglio, R Glasgow, H Hobbelen, S Hopewell, J Krishnan, D Riddle, J Segal, D Steinfort, P Tugwell, SN Van der Veer, VA. Welch, C Witt.Peer reviewedPostprin

L'esperit experimental de les falles innovadores de València

Els autors d¿aquest estudi han participat com a membres del Jurat de la primera edició de les Falles I+E (Innovació més Experimentació) de València, una iniciativa sorgida amb la intenció de consolidar l¿aposta experimental de les falles, més enllà de l¿estricta reglamentació imposada tradicionalment per la Junta Central Fallera. Aquesta primera edició de 2013 ha comptat amb la participació de set comissions falleres de la ciutat. La convocatòria per formar el jurat va sorgir de José Francisco Carsí, membre de la comissió de la Falla de la Mercè, el qual es va ficar en contacte amb el crític d¿art i president de la Reial Acadèmia de Belles Arts de Sant Carles Romà de la Calle. El professor d¿estètica va acceptar i va recomanar que per completar el comitè s¿havia de comptar amb professorat universitari amb experiència i capacitat per fer front al repte específic paltejat

Volume Reflection Dependence of 400 GeV/c Protons on the Bent Crystal Curvature

41The trend of volume reflection parameters (deflection angle and efficiency) in a bent (110) silicon crystal has been investigated as a function of the crystal curvature with 400 GeV/c protons on the H8 beam line at the CERN Super Proton Synchrotron. This Letter describes the analysis performed at six different curvatures showing that the optimal radius for volume reflection is approximately 10 times greater than the critical radius for channeling. A strong scattering of the beam by the planar potential is also observed for a bend radius close to the critical one.openScandale W; Vomiero A; Baricordi S; Dalpiaz P; Fiorini M; Guidi V; Mazzolari A; Milan R; Della Mea G; Ambrosi G; Bertucci B; Burger WJ; Duranti M; Zuccon P; Cavoto G; Iacoangeli F; Luci C; Pisano S; Santacesaria R; Valente P; Vallazza E; Afonin AG; Chesnokov YA; Kotov VI; Maisheev VA; Yazynin IA; Kovalenko AD; Taratin AM; Denisov AS; Gavrikov YA; Ivanov YM; Lapina LP; Malyarenko LG; Skorobogatov VV; Suvorov VM; Vavilov SA; Bolognini D; Hasan S; Lietti D; Mozzanica A; Prest MScandale, W; Vomiero, A; Baricordi, S; Dalpiaz, P; Fiorini, M; Guidi, V; Mazzolari, A; Milan, R; Della Mea, G; Ambrosi, G; Bertucci, B; Burger, Wj; Duranti, M; Zuccon, P; Cavoto, G; Iacoangeli, F; Luci, C; Pisano, S; Santacesaria, R; Valente, P; Vallazza, E; Afonin, Ag; Chesnokov, Ya; Kotov, Vi; Maisheev, Va; Yazynin, Ia; Kovalenko, Ad; Taratin, Am; Denisov, As; Gavrikov, Ya; Ivanov, Ym; Lapina, Lp; Malyarenko, Lg; Skorobogatov, Vv; Suvorov, Vm; Vavilov, Sa; Bolognini, D; Hasan, S; Lietti, Daniela; Mozzanica, A; Prest, Michel

High-Efficiency Deflection of High-Energy Protons through Axial Channeling in a Bent Crystal

36Beam deflection due to axial channeling in a silicon crystal bent along the axis was observed with 400 GeV/c protons at the CERN Super Proton Synchrotron. The condition for doughnut scattering of protons by the atomic strings of the crystal was attained. Such a condition allowed one to observe a beam deflection of 50 mu rad with about 30% efficiency. The contribution of hyperchanneled states of protons to the observed beam deflection was less than 2% according to simulation results.openScandale W; Vomiero A; Baricordi S; Dalpiaz P; Fiorini M; Guidi V; Mazzolari A; Della Mea G; Milan R; Ambrosi G; Bertucci B; Burger WJ; Zuccon P; Cavoto G; Luci C; Santacesaria R; Valente P; Vallazza E; Afonin AG; Chesnokov YA; Maisheev VA; Yazynin IA; Kovalenko AD; Taratin AM; Denisov AS; Gavrikov YA; Ivanov YM; Lapina LP; Malyarenko LG; Skorobogatov VV; Suvorov VM; Vavilov SA; Bolognini D; Hasan S; Mozzanica A; Prest MScandale, W; Vomiero, A; Baricordi, S; Dalpiaz, P; Fiorini, M; Guidi, V; Mazzolari, A; Della Mea, G; Milan, R; Ambrosi, G; Bertucci, B; Burger, Wj; Zuccon, P; Cavoto, G; Luci, C; Santacesaria, R; Valente, P; Vallazza, E; Afonin, Ag; Chesnokov, Ya; Maisheev, Va; Yazynin, Ia; Kovalenko, Ad; Taratin, Am; Denisov, As; Gavrikov, Ya; Ivanov, Ym; Lapina, Lp; Malyarenko, Lg; Skorobogatov, Vv; Suvorov, Vm; Vavilov, Sa; Bolognini, D; Hasan, S; Mozzanica, A; Prest, Michel

Isotopic variation of parity violation in atomic ytterbium

We report on measurements of atomic parity violation, made on a chain of ytterbium isotopes with mass numbers A=170, 172, 174, and 176. In the experiment, we optically excite the 6s2 1S0 -> 5d6s 3D1 transition in a region of crossed electric and magnetic fields, and observe the interference between the Stark- and weak-interaction-induced transition amplitudes, by making field reversals that change the handedness of the coordinate system. This allows us to determine the ratio of the weak-interaction-induced electric-dipole (E1) transition moment and the Stark-induced E1 moment. Our measurements, which are at the 0.5% level of accuracy for three of the four isotopes measured, allow a definitive observation of the isotopic variation of the weak-interaction effects in an atom, which is found to be consistent with the prediction of the Standard Model. In addition, our measurements provide information about an additional Z' boson.Comment: 19 pages, 4 figures, 2 table

La formazione dell\u2019identit\ue0 corporea femminile nelle pratiche sportivo-motorie oggi: per una parit\ue0 di genere.

Il contributo intende analizzare l\u2019influenza dell\u2019attivit\ue0 motoria e sportiva, quale modello culturale, sulla costruzione dell\u2019identit\ue0 corporea della persona, in particolare della donna. Tale problematizzazione va letta in relazione all\u2019agire pedagogico che intende indagare e chiarire a quali condizioni lo sport femminile possa definirsi educativo-formativo, in ordine ad un processo di emancipazione e di espressione libera e originale della donna d\u2019oggi. The article looks to analyze the influence of physical exercise and sporting activity, as a cultural model, on the process of building a personal bodily identity: in particular, that of a woman. This problematization should be seen in relation to the pedagogical approach that intends to explore and clarify under what conditions female sport can be defined educational and instructive, as part of a process whereby today's woman pursues emancipation and free and original expression