Efficiency of quantum controlled non-Markovian thermalization

We study optimal control strategies to optimize the relaxation rate towards the fixed point of a quantum system in the presence of a non-Markovian dissipative bath. Contrary to naive expectations that suggest that memory effects might be exploited to improve optimal control effectiveness, non-Markovian effects influence the optimal strategy in a non trivial way: we present a necessary condition to be satisfied so that the effectiveness of optimal control is enhanced by non-Markovianity subject to suitable unitary controls. For illustration, we specialize our findings for the case of the dynamics of single qubit amplitude damping channels. The optimal control strategy presented here can be used to implement optimal cooling processes in quantum technologies and may have implications in quantum thermodynamics when assessing the efficiency of thermal micro-machines.Comment: 7 pages, 3 figure

Examining the Relationship between Substance Use and Test Anxiety among Students in a Public University in Nigeria

Substance use and test anxiety are two phenomena critical to the academic achievement and well-being of university students, however, few studies exist examining the relationship between both. Extant literature suggests that students use substances to cope with test anxiety but reciprocal causality also suggests substance use may also result in test anxiety. Consequently, this study examined the effect of substance use on test anxiety among university students. Two hundred and eighty-six undergraduate students participated in the study. The inclusion criterion was having an upcoming test in at least two weeks. The Drug Abuse Screening Test (DAST-10) and Westside Test Anxiety Scale were used to obtain data on students substance use and test anxiety. Results showed a positive association between substance use and test anxiety. Also, no gender difference was found in substance use and test anxiety. Recommendations offered include interventions aimed at reducing test anxiety, skills training to enhance coping and academic self-efficacy and the inclusion of the latter in future studies examining the relationship between the studys variables

Wind Powering America Initiative: The Wind and Water Power Program (WWPP)

The U.S. Department of Energy\u27s Wind Powering America initiative engages in technology market acceptance, barrier reduction, and technology deployment support activities. This fact sheet outlines ways in which the Wind Powering America team works to reduce barriers to appropriate wind energy deployment, primarily by focusing on six program areas: workforce development, communications and outreach, stakeholder analysis and resource assessment, wind technology technical support, wind power for Native Americans, and federal sector support and collaboration

Hearing on DWP Proposal on Toxic Stripping Towers

The Impact on the Health of Area Residents of A Toxic Water Stripping Tower Proposed For A North Hollywood Residential District

Measuring the Efficiency of Pesantren Cooperatives: Evidence in Indonesia

The Cooperative (Koperasi) as a non-Bank financial institution has the purpose of improving the welfare of its members as Koperasi Hidmat and the staffs of Latifah Mubarokiyah Koperasi Ponses Suryalaya that have been since decades ago. Over time, the ideal cooperative can show a significant development and increase the welfare of its members. This study aims to determine the efficiency of cooperative as a benchmark, because by known the performance value of a cooperation, it will known the weeknesses and advantages so that it can be improved the weaknesses and maintain the advantages.The method used is apply Data Envelopment Analysis (DEA). Inputs used from principal savings, mandatory savings, and fixed assets while the output used from savings in the cooperative, savings in other cooperative and SHU. As for result of this research indicates there are 9 perfect efficient DMUs (100 %) and inefficient DMU is 11 DMUs, consisting of 7 (IRS conditions) and 4 (DRS condition). The most inefficient cooperative is Koperasi Hidmat (2014) of 30.66% efficiency level.Kopkar IAILM is able to maintain its grade efficiency level from 2009 to 2015 when compared to other DMUs cooperatives in the observation, except in 2014. The calculation of efficiency level in this research is relative and it is not absolute, so that it is possible when the cooperative sample is added or the observation year is expanded, so it will get different result. The necessity of any cooperative or BMT based on Pondok Pesantren to make annual financial statements in order to increase accountability and transparency of fund management