期刊文献+
共找到4篇文章
< 1 >
每页显示 20 50 100
变拓扑机构理论的基本问题 被引量:10
1
作者 刘川禾 杨廷力 刘毅 《机械工程学报》 EI CAS CSCD 北大核心 2005年第8期56-62,共7页
研究了变拓扑机构理论的三个基本问题:变拓扑机构的定义、变拓扑机构的基本变拓扑方式及其相关性。主要以图论和点形图理论为工具,在定义机构拓扑结构、机构理想化、理想机构、机构的元和变元集等新概念基础上,提出了变拓扑机构新概念,... 研究了变拓扑机构理论的三个基本问题:变拓扑机构的定义、变拓扑机构的基本变拓扑方式及其相关性。主要以图论和点形图理论为工具,在定义机构拓扑结构、机构理想化、理想机构、机构的元和变元集等新概念基础上,提出了变拓扑机构新概念,并给出了严谨的数学定义。提出了变拓扑机构的三种基本变拓扑方式,准确表述了三种基本变拓扑方式的内涵。基本变拓扑方式是变拓扑机构拓扑结构变化的基本原理之一。依据该基本原理, 发现、提出并充分证明了变拓扑机构基本变拓扑方式的两个相关性定理及其三个推论。 展开更多
关键词 变拓扑机构 变拓扑基本方式 相关性定理
下载PDF
分数布朗运动的线性滤波
2
作者 文林 胡晓山 曹仲德 《应用数学》 CSCD 北大核心 2008年第S1期16-19,共4页
本文利用正态相关性定理给出了关于分数布朗运动的线性滤波最佳估计.
关键词 分数布朗运动 线性滤波 正态相关性定理
下载PDF
Uncovering the Connections Among Sustainability, Governance and GDP
3
作者 Tan Xiaomei Brett Rose 《Chinese Journal of Population,Resources and Environment》 北大核心 2007年第1期9-16,共8页
This paper examines the connections among sustain- ability, governance and GDP, using the data from 123 countries. Sustainability is found to be related with GDP in two contradic- tory ways. On the one hand, growth in... This paper examines the connections among sustain- ability, governance and GDP, using the data from 123 countries. Sustainability is found to be related with GDP in two contradic- tory ways. On the one hand, growth in GDP strengthens a nation’s ability to maintain favorable environmental conditions into the future. On the other hand, GDP growth is built on more consump- tion of natural resources, and therefore generates a larger “foot- print” on the Earth. Governance plays a key role in sustainable development. However, it is not helping to reduce our footprint on the Earth. In fact, good governance is linked to a larger footprint. This reflects our materialist value and human impulse. When a society prefers the comfort and well-being of human beings to the welfare of its environment, democratic governance might be used as an effective tool against nature. 展开更多
关键词 SUSTAINABILITY GOVERNANCE GDP ecological footprint
下载PDF
Strategic Prospective Methodology to Explore Sustainable Futures
4
作者 Guillermo Gaindara Fierro 《Journal of Modern Accounting and Auditing》 2015年第11期606-614,共9页
This paper shows prospective methodology as a tool to generate strategic knowledge for designing sustainable futures. The strategic prospective is a social science discipline dedicated to explore the future. Based on ... This paper shows prospective methodology as a tool to generate strategic knowledge for designing sustainable futures. The strategic prospective is a social science discipline dedicated to explore the future. Based on qualitative methods with participative experts and stakeholders, the strategic prospective allows designing different future scenarios and planning the transformation of a current situation into a desired future. To design sustainable futures, this paper proposes a four-stage methodology: understanding the context; strategy visualization; design of alternative scenarios and definition of desired future; and planning its construction. This methodology makes evident the possibility of seeking alternative scenarios for a sustainable future in different scopes, particularly, in two prospective applications: biodiversity conservation and water treatment. The outcomes of the application have allowed proposing strategies and policies for the management of environmental goods, such as environmental services and water reuse, with a long-time outlook based on a collective desired future. 展开更多
关键词 future studies scenario methodology strategic prospective future scenarios FUTURE
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部