Energy loss of fast quarks in nuclei

We report an analysis of the nuclear dependence of the yield of Drell-Yan dimuons from the 800 GeV/c proton bombardment of $^2H$, C, Ca, Fe, and W targets. Employing a new formulation of the Drell-Yan process in the rest frame of the nucleus, this analysis examines the effect of initial-state energy loss and shadowing on the nuclear-dependence ratios versus the incident proton's momentum fraction and dimuon effective mass. The resulting energy loss per unit path length is $-dE/dz = 2.32 \pm 0.52\pm 0.5$ GeV/fm. This is the first observation of a nonzero energy loss of partons traveling in nuclear environment.Comment: 5 pages, including 4 figure

A Time Purified Separated Antiproton Beam At The AGS

Physic

Changes in the counselor's role in flexible modular secondary schools in the state of California

The purpose of this study was to define the role of the high school counselor, generally, and to examine the changes that have occurred in this role since his school's transition to flexible modular scheduling. The study was limited to secondary schools in California which have used flexible modular scheduling and operate with grades nine through twelve. Not all of the County Schools Offices in the state responded to the request for a list of the flexible modular high schools in their county, so some eligible schools may not have been contacted. However, the writer feels that since only seven counties failed to respond, out of a possible fifty-eight counties in the State of California, a sufficient representation of flexible modular schools was obtained. The study was also limited in the research literature used to that which was available at the Fresno State College Library, the College of the Sequoias Library, the Tulare County Professional Teacher's Library, and the Woodlake High School Professional Library.illustration

CCD‐based reflection high‐energy electron diffraction detection and analysis system

A CCD‐based, computer controlled RHEED detection and analysis system that utilizes an on‐chip integration technique and on‐board data manipulation is described. The system is capable of in situ time‐resolved measurements of specular and integral‐order intensity oscillations, their phase differences, streak linewidths, and epitaxial layer lattice constants. The digital RHEED techniques are described in the context of Co/Au bilayer, GaAs/GaAs, and InxGa1−xAs/GaAs MBE growth. The system is compared to other RHEED detection devices.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/70680/2/RSINAK-62-5-1263-1.pd

Adolescents' involvement in cyber bullying and perceptions of school: the importance of perceived peer acceptance for female adolescents

Young people are spending increasing amounts of time using digital technology and, as such, are at great risk of being involved in cyber bullying as a victim, bully, or bully/victim. Despite cyber bullying typically occurring outside the school environment, the impact of being involved in cyber bullying is likely to spill over to school. Fully 285 11- to 15-year-olds (125 male and 160 female, M age = 12.19 years, SD = 1.03) completed measures of cyber bullying involvement, self-esteem, trust, perceived peer acceptance, and perceptions of the value of learning and the importance of school. For young women, involvement in cyber bullying as a victim, bully, or bully/victim negatively predicted perceptions of learning and school, and perceived peer acceptance mediated this relationship. The results indicated that involvement in cyber bullying negatively predicted perceived peer acceptance which, in turn, positively predicted perceptions of learning and school. For young men, fulfilling the bully/victim role negatively predicted perceptions of learning and school. Consequently, for young women in particular, involvement in cyber bullying spills over to impact perceptions of learning. The findings of the current study highlight how stressors external to the school environment can adversely impact young women's perceptions of school and also have implications for the development of interventions designed to ameliorate the effects of cyber bullying

Scaling behavior of giant magnetotransport effects in Co/Cu superlattices

We have observed two forms of scaling in magnetotransport properties of (111) Co/Cu superlattices: (1) the extraoridnary Hall coefficient Rs correlates with the resistivity xx(0) in the form Rsxx2(0), and (2) the magnetothermopower S(H) correlates with the magnetoresistivity xx(H) in the form S(H)/Txx(0)/xx(H). The first effect relates to quantum mechanical side jump while the other relates to interfacial spin-dependent density of states (DOS). These results revel the different roles of bulklike spin-dependent scattering in Co layers and spin-dependent DOS of interfacial layers in causing the observed large positive extraodinary Hall effect and giant longitudinal magnetotransport

Diminished physical function in older HIV-infected adults in the Southeastern U.S. despite successful antiretroviral therapy

As antiretroviral therapy efficacy improves, HIV is gradually being recognized more as a chronic disease within the aging HIV-infected population. While these individuals are surviving into old age, they may, however, be experiencing “accelerated aging” with greater declines in physical function than that observed among comparably matched individuals free of HIV. This decline is not well understood and it remains unclear if physical decline correlates with the degree of immunosuppression based on CD4 lymphocyte nadir

Triple coalescence singularity in a dynamical atomic process

We show that the high energy limit for the amplitude of the double electron capture to the bound state of the Coulomb field of a nucleus with emission of a single photon is determined by behavior of the wave function in the vicinity of the singular triple coalescence point.Comment: 3 page

Global configurations in multinational enterprises, duality, and the challenge of LGBT inclusivity in unsympathetic host countries within Africa

MNEs’ HRM practices need to be mindful of the institutional differences between the local context of host countries and that of their home countries. Balancing the localization of HRM practices with the desire for global standardization and integration is a dilemma for MNEs. We examine this tension utilizing a unique perspective, namely by analyzing the HRM challenges that MNEs face with regard to LGBT employees in Africa. We find that MNEs experience difficulty in reconciling their global corporate values and HR policies with local institutions and legislative requirements. Several contributions result. First, by bringing issues of duality to the fore both at the organizational and individual level. Second, we contribute towards the global configuration literature in international HRM as regards global standardization and national differentiation, by focusing on developing countries, where the scale of the cultural or institutional distance between home and host countries are likely to be larger, which allows us to examine the difficulties of the transfer of HR practices to these sites. Third, we embed our analysis of localization within institutional theory, and finally, we integrate these contributions into an analysis of HRM challenges of LGBT employees in hostile contexts and make recommendations