There are over 100 historically black colleges and universities （HBCUs） in the United States. The majority of these HBCUs are located in the southeast section of the United States. HBCUs are a major supplier of cert...There are over 100 historically black colleges and universities （HBCUs） in the United States. The majority of these HBCUs are located in the southeast section of the United States. HBCUs are a major supplier of certified public accountants （CPAs） to the profession. Therefore, the performance of candidates from HBCUs should be of interest to various constituents including educators, employers, parents, students, and other stakeholders. The purpose of this paper is to provide statistical performance on the 2011 CPA examination for large, middle, and small HBCUs based upon the number of testing events taken. Taking a testing event is not the same as passing a testing event. This was the dichotomy between quantity and quality of HBCUs＇ performances. For large HBCUs, Morehouse University, North Carolina Agricultural and Technical State University （NC A＆T）, and Tennessee State University （TSU） were cited. For middle HBCUs, Albany State University, Norfolk State University （NSU）, and North Carolina Central University （NCCU） were cited. For small HBCUs, Alcorn State University, Fisk University, and University of Maryland Eastern Shore （UMES） were cited. The dichotomy between quantity and quality is real.展开更多
This paper provides an overview of the degradation in CANDU^a （Canadian Deuterium Uranium） feeders in operating plants observed from the mid 1990s onward. The degradation has been dominated by feeder wall thinning, ...This paper provides an overview of the degradation in CANDU^a （Canadian Deuterium Uranium） feeders in operating plants observed from the mid 1990s onward. The degradation has been dominated by feeder wall thinning, caused by FAC （flow accelerated corrosion） and feeder cracking. This paper summarizes the industry＇s response to the discovery of these two degradation mechanisms and the methodologies, tools and technologies developed to monitor the degradation and assess the continued fitness for service to manage the plant life. This paper identifies some of the lessons gained from more than a decade of industry effort, and discusses how these lessons are being implemented in the refurbished and new CANDU plants. CANDU^a is a registered trademark of Atomic Energy of Canada Limited.展开更多
Based on the low energy effective Hamiltonian with naive factorization, we calculate the branching ratios （BRs） and CP asymmetries （CPAs） for the twenty three double charm decays B/B8 → D（＊）D（＊） in both the...Based on the low energy effective Hamiltonian with naive factorization, we calculate the branching ratios （BRs） and CP asymmetries （CPAs） for the twenty three double charm decays B/B8 → D（＊）D（＊） in both the standard （s） （s） model （SM） and the minimal supergravity （mSUGRA） model. Within the considered parameter space, we find that （a） the theoretical predictions for the BRs, CPAs and the polarization fractions in the SM and the mSUGRA model are all consistent with the currently available data within ±2σ errors; （b） For all the considered decays, the supersymmetric contributions in the mSUGRA model are very small, less than 7% numerically. It may be difficult to observe so small SUSY contributions even at LHC.展开更多
We present the performance of a high-power Nd:glass laser system,which produces a 1.1 J,250 fs,7.3 nm broadband laser pulse based on the combination of optical parametric amplification(OPA) and chirped pulse amplifica...We present the performance of a high-power Nd:glass laser system,which produces a 1.1 J,250 fs,7.3 nm broadband laser pulse based on the combination of optical parametric amplification(OPA) and chirped pulse amplification(CPA).The two-stage OPA provides broadband seed pulses for the three-stage Nd:glass amplifiers based on the technology of CPA.Compared to the conventional oscillator seed source,the most important advantage of such a seed source supplied by the two-stage OPA is that it possesses the capacities of broad bandwidth and high energy.展开更多
文摘There are over 100 historically black colleges and universities （HBCUs） in the United States. The majority of these HBCUs are located in the southeast section of the United States. HBCUs are a major supplier of certified public accountants （CPAs） to the profession. Therefore, the performance of candidates from HBCUs should be of interest to various constituents including educators, employers, parents, students, and other stakeholders. The purpose of this paper is to provide statistical performance on the 2011 CPA examination for large, middle, and small HBCUs based upon the number of testing events taken. Taking a testing event is not the same as passing a testing event. This was the dichotomy between quantity and quality of HBCUs＇ performances. For large HBCUs, Morehouse University, North Carolina Agricultural and Technical State University （NC A＆T）, and Tennessee State University （TSU） were cited. For middle HBCUs, Albany State University, Norfolk State University （NSU）, and North Carolina Central University （NCCU） were cited. For small HBCUs, Alcorn State University, Fisk University, and University of Maryland Eastern Shore （UMES） were cited. The dichotomy between quantity and quality is real.
文摘This paper provides an overview of the degradation in CANDU^a （Canadian Deuterium Uranium） feeders in operating plants observed from the mid 1990s onward. The degradation has been dominated by feeder wall thinning, caused by FAC （flow accelerated corrosion） and feeder cracking. This paper summarizes the industry＇s response to the discovery of these two degradation mechanisms and the methodologies, tools and technologies developed to monitor the degradation and assess the continued fitness for service to manage the plant life. This paper identifies some of the lessons gained from more than a decade of industry effort, and discusses how these lessons are being implemented in the refurbished and new CANDU plants. CANDU^a is a registered trademark of Atomic Energy of Canada Limited.
基金Supported by the National Natural Science Foundation of China under Grant Nos. 10947020 and 11005033Foundation of Henan Educational Committee for Youth Backbone Scholars in Colleges and Universities+1 种基金the Natural Science Foundation of the Eduction Department of Henan Province under Grant No. 2010A140012Natural Science Foundation of Henan Province under Grant No. 102300410210
文摘Based on the low energy effective Hamiltonian with naive factorization, we calculate the branching ratios （BRs） and CP asymmetries （CPAs） for the twenty three double charm decays B/B8 → D（＊）D（＊） in both the standard （s） （s） model （SM） and the minimal supergravity （mSUGRA） model. Within the considered parameter space, we find that （a） the theoretical predictions for the BRs, CPAs and the polarization fractions in the SM and the mSUGRA model are all consistent with the currently available data within ±2σ errors; （b） For all the considered decays, the supersymmetric contributions in the mSUGRA model are very small, less than 7% numerically. It may be difficult to observe so small SUSY contributions even at LHC.
基金supported by the National Natural Science Foundation of China (Grant No.60890202)the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No.20110161110012)+1 种基金the Department of Science and Technology of Hunan Province (Grant No.2011FJ3121)the Fundamental Research Funds for the Central Universities,Hunan University and SRF for ROCS,SEM
文摘We present the performance of a high-power Nd:glass laser system,which produces a 1.1 J,250 fs,7.3 nm broadband laser pulse based on the combination of optical parametric amplification(OPA) and chirped pulse amplification(CPA).The two-stage OPA provides broadband seed pulses for the three-stage Nd:glass amplifiers based on the technology of CPA.Compared to the conventional oscillator seed source,the most important advantage of such a seed source supplied by the two-stage OPA is that it possesses the capacities of broad bandwidth and high energy.
