循环经济的微观组织模式：基于供应链的分析

基于供应链角度提炼了循环经济的三种微观组织模式:绿色供应链、外生共生体型供应链和内生共生体型供应链.从理论基础、入链动力、链流内容、企业间纵向关系、合作基础及环境管理方式等六个方面对这三种涉及环境治理的企业间组织模式进行了对比分析,并分别考察了这三种供应链上环境治理的驱动者和驱动方式.基于供应链环境治理的特征,从治理效率、针对不同组织模式的供应链的实施侧重点、政府与市场角色、目标匹配等方面提出政策建议.     

加快发展循环经济促进重庆可持续发展

近年来,人类社会面临人口剧增、资源短缺和环境污染的严峻现实。在这种背景下,各国人民纷纷探索有利于环境保护和经济发展的新的经济模式。其中,循环经济模式成为世界各国经济转型的选择热点。重庆是长江上游最大的经济中心,也是我国面积最大、人口最多、最为年轻的直辖市,面对重庆市人口、环境、资源日益加剧的潜在压力,提出了重庆市发展循环经济的对策,促进重庆社会经济的可持续发展。     

A note on generalized binary proper efficiency-balanced block designs

Some methods of construction of generalized binary proper efficiency-balanced block (GB-EB) designs with two different replications are derived and the solution of the unknown designs given by Das and Kageyama (1991) are obtained.     

株洲市“两型”社会建设资源循环利用机制研究

资源循环利用是建设"两型"社会和发展循环经济的任务和目标.本文总结了株洲市资源循环利用的主要成就,同时分析了其中现存问题,并在此基础上探索了有利于资源循环利用的产业引导机制、生态补偿机制、奖惩机制、科技创新机制.     

A note on the connectivity of generalized cyclic designs

A necessary and sufficient condition is given to ensure that a generating blook of a generalized cyclic design will give rise to a connected design. The use of disconnected designs is briefly discussed.     

Generating generalized cyclic designs with factorial balance

An algorithm for generating paired comparison factorially balanced generalized cyclic designs is described. The algorithm is based upon the 2 ⁿ ? 1 class association scheme defined by Shah (1960) for n-factor experiments. The algorithm is highly successful in achieving its objective. Firstorder designs with block size greater than two can also be obtained using the algorithm.     

“健康城市”发展模式视角下的健康重庆建设

＂健康城市＂是人类面向21世纪的全新城市发展模式,对于现代城市的发展有着标志性的导向作用。世界范围内健康城市的发展正日益关注弱势群体,改善基础设施,促进生活方式革新,大力开展社区行动,建立全球工作网络。这些对于我们构建＂健康重庆＂有着重要的启示,也要求我们组建综合协调机构,不断更新健康重庆的内涵,面向市民健康做好城市规划,改革市政管理体制,发展循环经济,努力将重庆打造成为一座健康之城和活力之都。     

一种基于专用IC的数字循环相关器结构

介绍一种以ＡＳＩＣ（专用集成电路）实现为目的的数字循环相关器结构。基本思想是将快速算法与并行处理技术结合起来，以达到较高的工作速度而硬件开销又不致太大这个目标。讨论了累接算法及其运算量，然后根据累接算法给出了循环相关器的流水线结构，并分析这种结构的硬件开销及延迟级数。分析表明累接算法与流水线技术的结合是一种提高数字循环相关器综合指标的有效方法，并且所得的结构具有较好的规律性和简洁性，便于硬件实现。     

AN ALGORITHM FOR CONSTRUCTING OPTIMAL RESOLVABLE ROW-COLUMN DESIGNS

This paper describes an effective algorithm for constructing optimal or near-optimal resolvable row-column designs (RCDs) with up to 100 treatments. The performance of this algorithm is assessed against 20 2-replicate resolvable RCDs of Patterson & Robinson (1989) and 17 resolvable RCDs based on generalized cyclic designs (GCDs) of Ipinyomi & John (1985). The use of the algorithm to construct RCDs with contiguous replicates is discussed.     

PARTIALLY EQUINEIGHBOURED DESIGNS

This paper presents further results on a class of designs called equineighboured designs, ED. These designs are intended for field and related experiments, especially whenever there is evidence that observations in the same block are correlated. An ED has the property that every unordered pair of treatments occurs as nearest neighbours equally frequently at each level. Ipinyomi (1986) has defined and shown that ED are balanced designs when neighbouring observations are correlated. He has also presented ED as a continuation of the development of optimal block designs. An ED would often require many times the number of experimental materials needed for the construction of an ordinary balanced incomplete block, BIB, design for the same number of treatments and block sizes. Thus for a relatively large number of treatments and block sizes the required minimum number of blocks may be excessively large for practical use of ED. In this paper we shall define and examine partially equineighboured designs with n concurrences, PED (n), as alternatives where ED are practically unachievable. Particular attention will be given to designs with smaller numbers of blocks and for which only as little balance as possible may be lost.