期刊文献+
共找到6篇文章
< 1 >
每页显示 20 50 100
知识的属性扰动规律的不等式关系
1
作者 张冠宇 刘夏斐 《计算机科学》 CSCD 北大核心 2010年第9期242-244,260,共4页
知识的属性扰动引起知识规律的变化,这些变化的规律称为扰动规律。利用单向S-粗集和单向S-粗集对偶,给出属性扰动的知识规律的上规律、下规律的概念,并对知识规律与属性扰动的知识规律进行了讨论,提出了属性扰动知识规律(上规律,下规律... 知识的属性扰动引起知识规律的变化,这些变化的规律称为扰动规律。利用单向S-粗集和单向S-粗集对偶,给出属性扰动的知识规律的上规律、下规律的概念,并对知识规律与属性扰动的知识规律进行了讨论,提出了属性扰动知识规律(上规律,下规律)的不等式定理。 展开更多
关键词 知识规律 属性扰动 上规律 规律 扰动知识规律 不等式定理
下载PDF
The Legal Regulations on Dams Construction on International Rivers: The Compliance of the Nile Basin Upstream States of the Regulations
2
作者 Mosaed Abd Elatty Shetwey 《Journal of Earth Science and Engineering》 2014年第12期718-735,共18页
The process of constructing hydraulic projects on international rivers is governed by several legal regulations, among the most important of these regulations are: the Principle of no harm, and the Principle of Prior... The process of constructing hydraulic projects on international rivers is governed by several legal regulations, among the most important of these regulations are: the Principle of no harm, and the Principle of Prior Notification, protection of the river's environment and the Principle of Settling the International Disputes via Peaceful Means, which is considered one of the most important principles called for by the UN Pact, as it provides for adopting the peaceful means by the member states of the organization to settle international disputes through peaceful means, in addition to an applied study on the Nile Basin's projects. 展开更多
关键词 No-harm principle hydraulic project Prior Notification dispute settlement legal regulations.
下载PDF
The Ontology of Counter Factual Causality and Conditional
3
作者 Maduabuchi Dukor 《Journal of Philosophy Study》 2014年第7期492-496,共5页
The author is interested here in the examination of the ontological justification for counterfactual causality and conditional. Ontology metaphysically has to do with what exists and what does not exist. about objects... The author is interested here in the examination of the ontological justification for counterfactual causality and conditional. Ontology metaphysically has to do with what exists and what does not exist. about objects in their associated and individual existence. It is an attempt to further philosophy of causality scientific law, and theory of confirmation and establish a link counter factual. In terms of realism, it is the search for adequate among if-then "〉" and 展开更多
关键词 CONDITIONAL CAUSALITY COUNTERFACTUAL ONTOLOGY science EXPLANATION
下载PDF
"A Raft in the Stormy Sea": New Roles, New "Dresses" Operating in & for Business Networks
4
作者 Patrizia Riva Roberta Provasi 《Chinese Business Review》 2013年第11期762-774,共13页
This paper aims to discuss the development and functioning conditions of business networks. After recalling the main characteristics of post-fordistic environment and comparing it to a "stormy sea" (section one) o... This paper aims to discuss the development and functioning conditions of business networks. After recalling the main characteristics of post-fordistic environment and comparing it to a "stormy sea" (section one) of the paper focuses on the idea of networks described as "rafts" useful to firms to build their own competitive advantages. In fact, while theoretical knowledge is not so valuable because everybody can have it, practical and contextual knowledge is specific and therefore it can be defended. The development of a contextual knowledge is feasible if the firm chooses among all the possible alternatives. Subsequently in section two, it shows how fordistic principles eliminate space, reduce time, and increase the speed of communication among individuals and as entering a network has become a necessity as it allows a firm to obtain competitive advantages. The greatest benefit is the chance to share the task of creating new knowledge among different members. In section three it is discussed if navigation in the post-fordistic stormy sea could take advantage from the existence of a more certain regulation. It is necessary to underline that positive law is not a post-fordistic tool. There is no satisfactory detailed law regarding ideas, knowledge, and know-how, by now. Therefore, it is not possible to rely on a specific regulation framework to protect knowledge found on the network. In conclusion in section four, the work discusses how single organizations need to reach the "raft"--which is the network--through the idea of sharing learning and distinguishing elements necessary to survive in the stormy sea post-Fordism environment. Lastly, section five would be analyzed a public institution--Milan Chamber of Commerce--which has "changed its dress" to more effectively perform its support role to firms. 展开更多
关键词 post-Fordism period pre-Fordism period business networks shared knowledge competitive advantage stormy sea RAFT Chamber of Commerce
下载PDF
Current situation of simultaneous coal and methane extraction tech- nology in pressure-relieved coalbed group
5
作者 Feng CAI Ze-Gong LIU Yi LUO 《Journal of Coal Science & Engineering(China)》 2013年第4期500-506,共7页
The importance of simultaneous coal and methane extraction and its significance on green exploitation is stated, and current research situation of simultaneous coal and methane and faced new problems are introduced. T... The importance of simultaneous coal and methane extraction and its significance on green exploitation is stated, and current research situation of simultaneous coal and methane and faced new problems are introduced. The research progress on movement of overlying strata and stresses change in them, cracks development during mining in overlying strata and meth- ane emission under disturbance of mining as well as the changing rules of permeability and methane flow under the disturbance of mining is analyzed. The progress on practice of simultaneous coal and methane extraction is analyzed. The deficiencies of current research and further researching fields on simultaneous coal and methane extraction are pointed out. 展开更多
关键词 simultaneous coal and methane extraction pressure-relieved methane coalbed methane methane drainage
下载PDF
Analysis of internal tidal characteristics in the layer above 450 m from acoustic Doppler current profiler observations in the Luzon Strait 被引量:4
6
作者 LIAO GuangHong YUAN YaoChu +4 位作者 Kaneko ARATA YANG ChengHao CHEN Hong Taniguchi NAOKAZU Gohda NORIAKI 《Science China Earth Sciences》 SCIE EI CAS 2011年第7期1078-1094,共17页
The characteristics of internal tides in the upper layer of the Luzon Strait are investigated on the basis of direct-observation current data recorded on April 25 and September 26, 2008 by an acoustic Doppler current ... The characteristics of internal tides in the upper layer of the Luzon Strait are investigated on the basis of direct-observation current data recorded on April 25 and September 26, 2008 by an acoustic Doppler current profiler. Spectral analysis and energy estimation show that the diurnals and semidiurnals carry most of the energy of internal tides. Values of the depth-integrated total energy E for the three frequency bands of diurnal, semidiurnal, and high frequencies are 31, 6.9, and 3.4 kJ. m, respectively. Near-inertial peaks are only present in the baroclinic component. The behavior of typical tidal frequencies (i.e., O1, K1, M2, MK3, and M4) and the near-inertial frequency is basically consistent with linear internal wave theory, which predicts E+(ω)/E_(ω)=(ω-f)2/(ω+f)2 at depths above 66 m, while not all prominent tidal components coincide well with the relation of the linear internal wave field at other depths. Examinations of depth structures of the baroclinic tides and temporal variations show that the surface tides and internal tides are both of mixed type, having diurnal inequality and spring-neap fortnight periods. The K1 and O1 tides have comparable cross- and along-shelf components, while the M2 and S2 tides propagate toward the shelf in the northern South China Sea as wave beams. The amplitude and phase of internal tides vary with time, but M2 and S2 tides appear to have structures dominated by the first mode, while the K1 and O1 tides resemble second-mode structures. The minor to major axis ratios are close to expected values of flω in the thermocline. 展开更多
关键词 current observation acoustic Doppler current prof'fler internal tides internal waves Luzon Strait
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部