497 research outputs found
A localised co-rotating auroral absorption event observed near noon using imaging riometer and EISCAT
No full textInternational audienceAn isolated region of energetic electron precipitation observed near local noon in the auroral zone has been investigated using imaging riometer (IRIS) and incoherent-scatter radar (EISCAT) techniques. IRIS revealed that the absorption event was essentially co-rotating with the Earth for about 2 h. The spatial and temporal variations in D-region electron density seen by EISCAT were able to be interpreted within a proper context when compared with the IRIS data. EISCAT detected significant increases in electron density at altitudes as low as 65 km as the event drifted through the radar beam. The altitude distribution of incremental radio absorption revealed that more than half of the absorption occurred below 75 km, with a maximum of 67 km. The energy spectrum of the precipitating electrons was highly uniform throughout the event, and could be described analytically by the sum of three exponential distributions with characteristic energies of 6, 70 and 250 keV. A profile of effective recombination coefficient that resulted in self-consistent agreement between observed electron desities and those inferred from an inversion procedure has been deduced. The observations suggest a co-rotating magnetospheric source region on closed dayside field lines. However, a mechanism is required that can sustain such hard precipitation for the relatively long duration of the event
Criminal anthropology of mariticide in Russia. Foreword to the article by P.N. Tarnovskaya “Female criminality in connection with early marriages”
No full textObjective: to provide a general overview of the content of P.N. Tarnovskaya’s article “Female criminality in connection with early marriages”, to determine its place in its author’s heritage and its scientific value for modern criminology.Methods: the general scientific method of dialectical cognition, comparison, as well as the formal logical method (deduction, induction, definition and division of concepts).Results: having analyzed the content of P.N. Tarnovskaya’s article, the author determined its significance as the initial stage of forming her anthropological concept in the study of female murderers. The author specified the sections of P.N. Tarnovskaya’s monograph “Women-murderers” (1902), which use the results of the research described in the article under study. The author refuted the opinion, previously prevailing in Russian criminology, that anthropological research by P.N. Tarnovskaya was supposed to use biological means to prevent crime. On the contrary, in this work Tarnovskaya recommended changing the social environment to curb female criminality (mariticide), namely, abandoning the widespread early marriages of adolescent women before the end of puberty.Scientific novelty: for the first time, the author gives a criminological assessment of P.N. Tarnovskaya’s article “Female criminality in connection with early marriages” and indicates its links with her subsequent works.Practical significance: the results obtained make it possible to change the perception of research by P.N. Tarnovskaya’s as one of the founders of world criminological science. In her concept of crime prevention, the impact on general social factors on female criminality was considered fundamental for the prevention of women’s deviant behavior
Determinants of voluntary audit and voluntary full accounts in micro- and non-micro small companies in the UK
No full textThis is an Author's Accepted Manuscript of an article published in Accounting and Business Research, 42(4), 441 - 468, 2012, copyright Taylor & Francis, available online at: http://www.tandfonline.com/10.1080/00014788.2012.667969.This study investigates the link between the auditing and filing choices made by a sample of 592 small private companies, which includes 419 micro-companies. It examines decisions made in connection with the 2006 accounts following UK's adoption of the maximum EU size thresholds in 2004, and the impact of the proposed Directive on the annual accounts of micro-companies. The research extends the model of cost, management and agency factors associated with voluntary audit, and develops a complementary model for voluntary full accounts. The results show the benefits of placing full audited accounts on public record that outweigh the costs for a significant proportion of companies. In non-micro small companies, voluntary audit is determined by cost and agency factors, whereas in micro-companies it is driven by cost, management and agency factors. In both groups, the predictors of voluntary full accounts include management and agency factors, and choosing voluntary audit is one of the key factors. The study provides models that can be tested in other jurisdictions to provide evidence of the needs of micro-companies, and the discussion of the methodological challenges for small company researchers in the UK makes further contribution to the literature
The high latitude D-region and mesosphere revealed by the EISCAT incoherent scatter radars during solar proton events
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First observation of Bs → J/ψf0(980) decays
No full textUsing data collected with the LHCb detector in proton–proton collisions at a centre-of-mass energy of 7 TeV, the hadronic decay is observed. This CP eigenstate mode could be used to measure mixing-induced CP violation in the system. Using a fit to the π+π− mass spectrum with interfering resonances gives . In the interval ±90 MeV around 980 MeV, corresponding to approximately two full f0 widths we also find , where in both cases the uncertainties are statistical and systematic, respectively
Measurement of the time-dependent CP asymmetry in B0 -> J/ψ KS0 decays
No full textThis Letter reports a measurement of the CP violation observables SJ/ψK0S and CJ/ψK0S in the decay channel B0→J/ψK0S performed with 1.0 fb−1 of pp collisions at s√=7 TeV collected by the LHCb experiment. The fit to the data yields SJ/ψK0S=0.73±0.07(stat)±0.04(syst) and CJ/ψK0S=0.03±0.09(stat)±0.01(syst). Both values are consistent with the current world averages and within
expectations from the Standard Model
Measurement of the D+/- production asymmetry in 7 TeV pp collisions
No full textThe asymmetry in the production cross-section \sigma of D+/- mesons, A_P = (\sigma(D+) - \sigma(D-))/(\sigma(D+) + \sigma(D-)), is measured in bins of pseudorapidity \eta and transverse momentum p_T within the acceptance of the LHCb detector. The result is obtained with a sample of D+ -> K_S pi+ decays corresponding to an integrated luminosity of 1.0 fb^-1, collected in pp collisions at a centre of mass energy of 7 TeV at the Large Hadron Collider. When integrated over the kinematic range 2.0 K_S pi+ decay is negligible. No significant dependence on \eta or p_T is observed
The storm of 10 January 1997: electrodynamics ofthe high latitude e region from eiscat data
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