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算子权移位的亚自反性 被引量:1
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作者 李觉先 《辽宁大学学报(自然科学版)》 CAS 1993年第1期29-34,共6页
本文首先仿照 A.Lambert 对单边算子权移位的处理方法刻划了双边算子权移位所张成的弱闭代数,进而证明了算子权移位均是亚自反的.做为推论,讨论了算子权移位直接和的自反性,从而在算子权移位范围内肯定回答了 J.Deddens 的两个问题.
关键词 算子权移位 弱闭代数 亚自反性
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分离向量与自反性
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作者 陈全园 周永正 陶常利 《数学的实践与认识》 CSCD 北大核心 2005年第9期191-194,共4页
设A是B(X)的子代数,且A具有分离向量x0,本文讨论它的2-自反性和亚自反性,并就具有分离向量的交换算子代数.部分地回答了J.A.Deddens在文献[7]中提出的一些关于自反性的问题.
关键词 分离向量 自反 子代数 亚自反性 2-自反 BANACH空间
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The Relevance of Nigeria's Freedom of Information Act (2011) to the Country's Anti-corruption War
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作者 Chike Walter Duru 《Journalism and Mass Communication》 2016年第12期757-762,共6页
This essay is centred on Nigeria's Freedom of Information Act, with special interest in its relevance in the country's anti-corruption war. The paper reiterates that the law was passed to enable the public to access... This essay is centred on Nigeria's Freedom of Information Act, with special interest in its relevance in the country's anti-corruption war. The paper reiterates that the law was passed to enable the public to access certain government information, in order to ensure transparency and accountability. The FOI Act aims to make public records and information more freely available and to protect public records and information, in accordance with the public interest and protection of personal privacy. It enables citizens to hold the government accountable in the event of the misappropriation of public funds or failure to deliver public services. It also seeks to protect serving public officers against any adverse consequences from the unauthorized disclosure of certain kinds of official information, and to establish procedures for the achievement of these purposes. The Act further regulates conflicts between its provisions and those of other legislations. The paper contends that Freedom of Information is a fundamental indicator of economic development and progress, civic engagement and a properly functional democracy in every economy, describing it as a promising start in ensuring good governance and rule of law in Nigeria. The paper stresses the need for vigorous implementation of the FOI Act if the country is to make any significant breakthrough in the enthronement of good governance, transparency and accountability, adding that a strengthened FOI regime will enhance citizens' demand for accountability and check corruption in Nigeria. 展开更多
关键词 Freedom of Information Act good governance ANTI-CORRUPTION NIGERIA
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Completely Autotrophic Nitrogen-removal over Nitrite in Two Types of Reactors
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作者 郑雪松 杨虹 +1 位作者 李道棠 王鹏 《Journal of Donghua University(English Edition)》 EI CAS 2005年第4期29-32,共4页
Two lab-scale reactors, suspended-sludge and fluidized.bed, were conducted with the feed of ammonium-rich synthetic wastewater devoid of COD. Completely autotrophic nitrogen-removal process was fulfilled in both react... Two lab-scale reactors, suspended-sludge and fluidized.bed, were conducted with the feed of ammonium-rich synthetic wastewater devoid of COD. Completely autotrophic nitrogen-removal process was fulfilled in both reactors and the maximum efficiencies of nitrogen removal were achieved, 65% in the suspended-sludge reactor and 73% in the fluidized-bed reactor respectively. Different from the steady performance of the fluldized-bed reactor, the suspended-sludge reactor came to deteriorate constantly after a period of stable operation, resulting in almost complete loss of the N-removal ability in the suspending system. Molecular methods such as PCR and FISH were employed for describing the microbial characteristics in two systems. This study suggests that a biofllm system is a suitable configuration for completely autotrophic N-removal with more feasibility and stability than a suspending system. 展开更多
关键词 nitrogen-removal ammonium-rich wastewater activated sludge FISH(Fluorescent In Situ Hybridization).
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