Do many-particle neutrino interactions cause a novel coherent effect?

We investigate whether coherent flavor conversion of neutrinos in a neutrino background is substantially modified by many-body effects, with respect to the conventional one-particle effective description. We study the evolution of a system of interacting neutrino plane waves in a box. Using its equivalence to a system of spins, we determine the character of its behavior completely analytically. We find that, if the neutrinos are initially in flavor eigenstates, no coherent flavor conversion is realized, in agreement with the effective one-particle description. This result does not depend on the size of the neutrino wavepackets and therefore has a general character. The validity of the several important applications of the one-particle formalism is thus confirmed.Comment: 25 pages, 1 figur

Money laundering trends in South Africa

Reports a study by the Centre for the Study of Economic Crime at Rand Afrikaans University into the characteristics of money laundering schemes in South Africa; these were discussed at a workshop on December 5 2001. Outlines the 1998 Proceeds of Crime Act (POCA), the 1992 Drugs and Drug Trafficking Act and their general money laundering provisions, including negligence and intent, defence and penalties; also the racketeering provisions of POCA. Moves on to the reporting of suspicious transactions, where the POCA provisions will be repealed by the new Financial Intelligence Centre Act (FICA); this covers general obligations, secrecy and confidentiality, penalties, preventing tipping-off, and reporting statistics. Gives examples of the schemes themselves, which fall into broad themes: purchase of goods and properties, abuse of businesses and financial institutions, cash and currency, and the informal sector; case studies include S v Dustigar, Motsepe v Commissioner of Inland Revenue, S v Van Zyl, S v Caswell, and Director of Public Prosecutions: Cape of Good Hope v Bathgate.<br /

Guide to implement the voluntary quality control review program for CPA firms; Performing and reporting on quality control compliance reviews; Discussion draft (American Institute of Certified Public Accountants), 1977, October 28

https://egrove.olemiss.edu/aicpa_sop/1752/thumbnail.jp

Guide to implement the voluntary quality control review program for CPA Firms; Quality control policies and procedures for participation CPA firms

https://egrove.olemiss.edu/aicpa_comm/1097/thumbnail.jp

Report of the Commission to Plan for the Establishment of a Proposed State-supported University in the Richmond Metropolitan Area [Edward A. Wayne, Chairman]

After the 1965 Bird Commission recommended the creation of a state university in Richmond, the state legislature named a commission to develop an implementation plan headed by Edward A. Wayne Sr., president of the Richmond Federal Reserve Bank. Their recommendation, supported by the Governor and General Assembly, was the creation of Virginia Commonwealth University. Wayne was named vice-rector of the first Board of Visitors of VCU, and the University\u27s Wayne Medal honors individuals who have made outstanding contributions or provided exemplary service to VCU. This is the full text of the 1967 report, entitled Report of the Commission to plan for the establishment of a proposed state-supported university in the Richmond Metropolitan Area.https://scholarscompass.vcu.edu/vcu_books/1004/thumbnail.jp

Report by Committee on By-laws and Proposed Amended Constitution and By-Laws of The American Association of Public Accountants. September 1910

https://egrove.olemiss.edu/aicpa_assoc/3446/thumbnail.jp

Authenticating the Query Results of Text Search Engines

The number of successful attacks on the Internet shows that it is very difficult to guarantee the security of online search engines. A breached server that is not detected in time may return incorrect results to the users. To prevent that, we introduce a methodology for generating an integrity proof for each search result. Our solution is targeted at search engines that perform similarity-based document retrieval, and utilize an inverted list implementation (as most search engines do). We formulate the properties that define a correct result, map the task of processing a text search query to adaptations of existing threshold-based algorithms, and devise an authentication scheme for checking the validity of a result. Finally, we confirm the efficiency and practicality of our solution through an empirical evaluation with real documents and benchmark queries. 1