制粉系统的经济运行

分析了广州发电厂员村热电厂制粉系统电耗偏高的原因，通过对制粉系统的一系列改进，使得制粉电耗由原来的27～30kwh／t降低至22～24kwh／t。降低了制粉电耗，提高了制粉系统运行的经济性。     

浅谈施工企业工程项目管理

文章结合作者近年来工程项目管理的实践,阐述了目前施工企业工程项目管理中存在的问题,并就如何提高工程项目管理水平,提出一些有益的建议。     

Evaluation of capital cost data. part 7: Liquid waste disposal with emphasis on physical treatment

Capital cost correlations are given for oil-water separators, equalization basins, primary clarifiers, clarifiers and clarifier mechanisms, reverse osmosis unit, ultrafiltration units, gravity filters and miroscreens. Data are included for raw sewage, intermediate and recirculation pumping stations and for preliminary treatment (or bar screens, grit removal, overflow and bypass chamber and Parshall flume), for grit removal, comminution and gas stripping. The correlations are accurate to ± 30%, expressed in Canadian dollars and adjusted to a Marshall and Swift value of 1000. Details as to what components are included in the cost are given. Data are given for the labour and material costs to create a working process module. For inflation indices, a critique of the Engineering News Record, EPA small city, Marshall and Swift, Chemical Engineering and Southam inflation indices suggested that the Marshall and Swift index is most appropriate for the construction and process equipment studied here. Concerning the currency exchange, for the equipment and processes in this study, equipment costs the same whether expressed directly in US or Canadian dollars. To put the current data into perspective, several hundred sources of cost data were analyzed. The major correlations are compared, on a consistent basis, with current data.     

Si相的析出状态对Al—Si合金性能的影响

控制Si相的析出状态,会对Al-Si(1wt％)合金的性能产生不同的影响。本文阐述通过不同的热处理工艺改变了Al-Si(1wt％)合金的机械、物理性能,获得了高形变强化率、高塑性变形能力、高拉伸强度的工艺,还讨论了具有上述高拉伸强度的微细丝在半导体器件应用中所具有的优越性。     

Delivering Improvement from Truth — the Fragile Link Between Analysis and Effective Change

In the history of operations research in industry there has been an abundance of analyses and recommendations produced in millions of man hours by dedicated OR specialists. And yet the net improvement is significantly lower than expected. There are numerous reasons for this shortfall: incomplete analysis, too much theory, incomplete implementation, unreliable recommendations, or a combination of some of these reasons.
By describing several examples, the major reasons for the fragility of the link between recommendation and implementation will be reviewed. What has to be done today to increase the likelihood of implementing an OR recommendation and thus improve the performance of an industrial entity by using the power of OR tools will then be described.     

Short cue presentations encourage advance task preparation: A recipe to diminish the residual switch cost.

In the task-switching literature, it has frequently been demonstrated that although advance task preparation reduces the switch cost, it never really eliminates the switch cost. This remaining residual switch cost received much attention, and it has been argued that advance preparation is restricted in nature. In the present study, the role of task-cue presentation in the establishment of the residual switch cost was investigated. In 4 experiments, the cue was removed during the preparation interval, and it was hypothesized that this would encourage participants to complete advance task preparation. The results of all 4 experiments provided support for this hypothesis: When the cue was presented for a short time and then removed, the residual switch cost completely disappeared. This was found for different cue types. Furthermore, Experiment 3 demonstrated that it was not the presence of the cue itself but merely differences in advance task preparation that caused the effects. This suggests that advance task preparation is not as restricted in nature as previously assumed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

技术杠杆系数的研究——技术进步对企业息税前收益的影响

提出了技术杠杆的概念,并就技术成本杠杆和技术价格杠杆对企业息税前收益变化的影响程度进行了探讨,经理论计算说明了通过技术进步不但可以提高企业的息税前收益,而且当企业的经济效益越差时,技术进步使产品的变动成本降低或使产品的单位售价提高而带来的企业息税前收益提高的速度越快。     

注塑件/模具成本评估方法研究综述

对注塑模成本评估领域的主要研究方法进行了分析 ,指出了相关的几个成本评估流派。着重对成本评估的CEF方法进行了总结 ,并对当前国际上流行的派别的优缺点进行了总结。文末 ,给出了我们的研究思路大体概述     

Solar ponds in alkaline lake and oil well regions

Solar ponds are probably the simplest technology available for the useful conversion of solar energy. The basic technology is proven. Solar ponds have been shown to be technically feasible and economically viable for many applications, particularly for thermal use. The electrical conversion and use of solar energy via solar ponds is still questionable, in general, for economic viability. By putting the untapped sources together in the South Plains region, it looks promising economically both for thermal and electrical conversions and applications. There are a number of alkaline lake basins randomly scattered in the South Plains region of the U.S.A. In that area, there are thousands of crude oil producing wells that produce brine in abundance. The selection of suitable alkaline lake basins as a solar pond site and as depository sites of brine from oil wells and the using of this brine and salty water from alkaline lakes makes the solar pond economically viable for both thermal and electrical demands in the area.