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81.
82.
When testing for the equality of two distributions in a case-control design with treatment effects presumed to act possibly
on more than one aspect, different tests may be properly considered for testing for different features of a null hypothesis,
leading to the multiple aspect testing issue. Two different aspects are therefore of interest: the location-aspect, based
on the comparison of location indexes, and the distributional-aspect, based on the comparison of the empirical distribution
functions. A simulation study shows that the combined testing procedure exhibits a good robust overall performance, and an
application in biomedical research is also presented. 相似文献
83.
Linking performance drivers in production planning and inventory control to process choice 总被引:1,自引:0,他引:1
This study investigates how process choice relates to production planning and inventory control decisions. We empirically examine the validity of deductively derived patterns about these types of decisions. More importantly, we look for normative insights by exploring how production planning and inventory control decisions affect operations performance. Our findings show that production line and continuous flow plants use more of a level production strategy, and carry less raw material and work-in-process inventory. The performance drivers for these plants, through which the operations function excels, are effective utilization of equipment, reduced finished goods inventory, and reduced setup down time. To gain forward demand visibility and batching economies, job and batch shops rely much more on backlogs in their planning process. These plants use more of a production chase strategy and position inventory lower in the bills of materials. Four performance drivers for top-performing job and batch shops are to find ways that better anticipate customers' orders, have a more responsive chase strategy, carry less raw material or purchased inventory, and shorten production planning horizon, partly through less reliance on backlogs. It is intriguing that top-performing plants not only do the expected things, given their choice of process, but also excel in selected dimensions—some of which fit the profile normally associated with a different process choice. To monitor and continuously improve operations, evaluation ‘scorecards’ should pay particular attention to performance drivers, which change depending on the plant's process choice. 相似文献
84.
We present general results for finding or boundingt
maxB
, the maximum number of arbitrary whole blocks of observations which can be removed from a block design, and still leave all of the elementary treatment contrasts estimable. The block sizes may be larger than the number of treatments. The results are applied to BBDs, reinforced BIBDs and BBDs, BTIBDs, and a series of variance balanced incomplete block designs with two block sizes. Also given for most of these designs, are results fort
max, the maximum number of arbitrary, scattered observations that can become unavailable, and still leave all of the elementary treatment contrasts estimable.The work was undertaken while Dr. Whittinghill was visiting Ohio State University, and supported by a grant from the Natural Sciences Division, Colby College, Waterville, Maine. 相似文献
85.
基于供应链的物流网络设计研究 总被引:1,自引:0,他引:1
比较分析了基于供应链的物流网络的设计特点,并提出了其设计原则与设计步骤. 相似文献
86.
87.
Liu Yuanqing Su Yang 《生态经济(英文版)》2006,2(1):69-76
In this paper, the executive of the 10th Five- Year Plan in the field of environmental protection and ecological constrution is reviewed, and the charactristics of economic growth and its environmental impact on the 11^th Five-Year Plan is forecasted and analyzed. A principal idea of eavironmental protection and ecological construction is put forward for the 11^th Five-Year Plan pertod: strensgthen the point treatment in key areas and set the main targets based on the idea. The relating countermeasures in national level are proposed as follows: set up appropriate ideas for official achievements by launching resources and environmental cost acconting; adjust the industrial struacture actively by industrial policies and strenuous work; develop circular economy, change the mode of environmental protecgon from end treatment to headstream and proeess control: strengthen the market mechanism in the process of pollution treatment, set up the system of "who treats who benefits" ; perfect interrelated laws and standards, strengthen the ability of environmental munagement; lay extra emphasis on two key targets: water pollution tretment in key river basins and management of the reserves; and combine the ecological consnuction and poverty alleviation in higher level. 相似文献
88.
生态产业与三峡库区经济环境可持续发展 总被引:2,自引:0,他引:2
王文军 《生态经济(学术版)》2007,(10):91-94,126
三峡库区经济落后,生态脆弱,在库区新农村建设过程中,必须考虑到资源、环境与经济的协调关系。在实地调研的基础上,本文建议:应设计特色生态工业园区,以主题概念招商引资,通过园区的生态设计为企业创造生态产业链,为生态工业的建立和发展提供平台,引导工业可持续发展;以经济株方式经营库周绿化带,发展农业旅游,促进产业间良性循环;建立生态农业循环体系,创建绿色产品基地;结合退耕还株,采用株药问种、株果问种等方式使生态建设与经济发展相互促进;垃圾资源化处理,实行垃圾无害化处理与农业有机肥联动机制。 相似文献
89.
陈召洪 《生态经济(学术版)》2006,(8):122-124
国债市场是货币市场的重要组成部分,在发达国家其金融功能已超越财政功能。我国国债市场由于流动性水平较低,难以执行宏观金融调控功能。为此,应当合理规划我国国债市场,并以提高其流动性水平为目标,拓展我国国债的金融功能。 相似文献
90.
浙江省水利投融资的分析 总被引:2,自引:0,他引:2
在剖析了浙江省近年水利资金投向结构及水利建设资金来源构成的基础上,对浙江水利资金投向结构发生变化的原因以及浙江水利融资的特点进行了分析研究,提出了今后稳定水利投资规模的对策和建议。 相似文献