在山西兴建燃气-蒸汽联合循环电厂的必要性和可行性探讨

分析了山西电力的现状以及国内外使用燃气—蒸汽联合循环的情况,指出在山西有必要且有可能建立燃气—蒸汽联合循环电厂,以提高山西能源利用率,减少山西的环境污染。     

连锁经营引领我国的流通现代化

介绍了连锁经营的起源与发展,对连锁经营如何引领我国的流通现代化进行了探讨。     

2001年中国物流发展回顾

近几年,物流在中国迅速发展,受到了各界广泛的关注。本文总结了过去的一年中我国物流业发展的一些特点,并指出了现阶段我国物流发展中仍然存在的一些问题。针对这些特点和问题,对我国物流的发展提出了一些相关的政策建议。     

工作流技术在公文流转中的设计

对工作流技术的产生、体系结构及特点作了简要介绍,分析了公文流转的业务过程,提出了基于工作流控制的公文流转系统的设计方法,使得目前存在的公文流转系统中并未实现真正流程化的问题得以解决,对于具体公文流转的抽象、简化以及整个系统规划都进行了详细的阐述。     

基于EXCEL的图书馆流通工作定量分析

运用EXCEL工具软件统计图书馆日常图书流通数据,对图书流通量进行预测,对图书流通量与时间频率分布进行调查分析,对书架图书载量和馆舍潜力作出预测,为图书馆决策者提供多视觉的思考空间和具有说服力的决策依据.     

论我国民间器乐曲中常用的旋律发展手法

传统民族器乐中有着丰富而多样的旋律发展手法,长期以来形成了一套独特的规律,从目前所掌握的资料与音响中,总结分析了民族器乐中带有普遍意义的有关旋律发展技法,并将其归类为重复、联缀、循环、变奏、展衍五种技法.     

用模型方法研究灌注压对缺血区心肌血流时相分布的影响

为了研究在舒张期提高冠脉灌注压对缺血区血流时相分布的影响,建立了一个左心室壁血流灌注仿真模型。模型中正常心肌和缺血心肌中血管网都用３个支路来代表,各个支路由符合生理实际的非线性时变阻容元件组成。以６条雄性犬的左心室压和主动脉压的实测数据作为输入进行仿真,得出了符合已有实验观察的结论。结果表明：舒张期提高灌注压对缺血心肌的血流灌注有明显改善。     

Observational study of the circulation in the southern South China Sea

CTD data from two oceanographic survey cruises, conducted by “Shiyan No. 3” R/V during two reversing monsoons, were employed to calculate and analyze the distributions of temperature, salinity and geopotential anomaly in the southern South China Sea (SSCS). Based on these distributions, the horizontal structures of the SSCS circulation are described systematically. Study results show that the SSCS circulation structure could be classified as a two-layer (the upper and the lower) pattern, and that the main circulation in the upper layer (0–400 m) is driven by the South China Sea monsoons and is opposite in direction to the reversal of the monsoons. The distributions of principal current systems and their features are presented. Two important local phenomena, local eddy and oceanic front, were observed.     

最小费用流原始-对偶算法分析

分析了原始一对偶圈算法，并补充了著名数学家Papadimitriou(1982)在其专著中的证明；此外，还增加了原始一对偶迭加算法可能出现的其它情况，这样更有利于深化对最小费用流的认识．     

Dynamical framework with blocking topography coordinates for atmospheric GCM and its validation

The dynamical framework with Blocking Topography Coordinates (hereafter, BTC), which is suited to handle the steep topography for the atmospheric general circulation models, is presented in this paper, together with its validation results. The integral properties of both the differential and finite-difference equations for the BTC dynamical core are: gross mass conservation, quadratic conservation for advection terms, Coriolis force does not change the kinetic energy, conservation of total available energy. The improved nonlinear iteration scheme is utilized for the time-integration. The energy conservation for BTC dynamical core is validated by using the integration results from 9-layer and 21-layer version respectively. Comparison results show that, the changes of the kinetic energy and total available potential energy during the integration are quite close for both the BTC dynamical framework and the dynamical framework of IAP 9-level and IAP 21-level AGCM, and this may suggest that the BTC dynamical core can be used for long-term integration with good computational stability. Furthermore, the BTC dynamical core has the advantage over the terrain following (sigma) coordinates in its better representation of the influence of the large-scale topography on the atmospheric general circulation. Finally, the correctness and reasonableness of the BTC dynamical core has been further proved by the numerical simulation of the topography influence on the quasi-stationary planetary wave with 21-layer version of BTC dynamical framework.