有限差分法计算HF分子的振动能级和光谱

本文用有限差分法计算了HF分子的振动能级并且把计算的结果用切比雪夫法进行拟合得到了HF的光谱项,将所得结果与黄整等人的用时域有限差分法计算所的结果和实验值进行了比较。     

企业标准化工作现状与发展

介绍了如何构筑企业标准化工作平台，提高企业的核心竞争力及企业标准化工作的现状。阐述了大力推进企业标准化工作与走一条简捷、优化、高效、科学的企业发展之路的关系。     

A miniature UWB planar monopole antenna with 5-GHz band-rejection filter and the time-domain characteristics

A planar monopole antenna with a staircase shape and small volume (25/spl times/26/spl times/1 mm/sup 3/) is proposed in this paper. With the use of a half-bowtie radiating element, the staircase-shape, and a modified ground plane structure, the proposed antenna has a very wide impedance bandwidth measured at about 11.6 GHz (2.9-14.5 GHz, bandwidth ratio about 1:5) below VSWR 2 including the WLAN band notched in the vicinity of 5 GHz. An omnidirectional radiation pattern is obtained. The group delay which is an indication of linearity between two proposed antennas is less than 1 ns. The electrical characteristics in terms of frequency and time domains and physical ones of the proposed antenna make it attractive for use in ultrawideband (UWB) systems.     

“两课”改革必须处理好的几个问题

长期以来，两课的教学效果不尽如人意，这既有两课的课程设置和教学内容选择方面的问题，也有教学的方式方法问题。只有正确处理好“做人的学问”和“做事的学问”；马克思主义理论与人文素质教育；国家意志和学生需要；教学与科研等方面的关系，两课教学才能充分发挥其在培养具有中国特色社会主义事业的建设者和接班人中的应有作用。     

Preparation and Haemocompatibility of Regular Array Microporous PLGA Films on Stainless Steel Surface

Regular array microporous films from poly （ L-lactic-co-glycolic acid ） （ PLGA ） were prepared on stainless steel substrates utilizing the condensation of water droplets on polymer solutions. The size of the pores and regularity can be controlled by atmospheric humidity and concentration of polymer solution. The microporous films have strong hydrophabicity and good haemocompatibility.     

应用影像对正法的前照灯检测技术

前照灯是汽车安全检测的重要内容之一，其检测技术在国内已经发展了十几年，但随着汽车工业的快速发展，既有的一些前照灯检测技术已显落后，不能满足新的需求。本文针对我国机动车前照灯的配光模式以及结构形式的变化，分析了传统前照灯检测方法存在的不足，提出了一种应用影像对正法的前照灯检测新技术并阐述了其定标方法。     

建设工程招标代理过程中应注意的一些问题

结合目前我国招投标的实际情况提出招标代理过程中出现的一些问题及改进措施。     

Fuel coolant interaction experiments in TROI using a UO2/ZrO2 mixture

This paper discusses the results of steam explosion experiments using reactor material carried out under “Test for Real cOrium Interaction with water (TROI)” program. About 4–9 kg of corium melt jet is delivered into a sub-cooled water pool at atmospheric pressure. Spontaneous steam explosions are observed in four tests among six tests. The dynamic pressure, dynamic load, and morphology of debris clearly indicate the cases with steam explosion. The initial conditions and results of the experiments are discussed.     

Odyssey: a high‐performance clustered video server

Video servers are essential in video‐on‐demand and other multimedia applications. In this paper, we present our high‐performance clustered CBR video server, Odyssey. Odyssey is a server connecting PCs with switched Ethernet. It provides efficient support for normal play and interactive browsing functions such as fast‐forward and fast‐backward. We designed a set of algorithms for scheduling, synchronization and admission control, which results in a high utilization of resources. Odyssey is able to deliver a large number of video streams. Copyright © 2003 John Wiley & Sons, Ltd.     

移动床过滤除尘的直接数值模拟研究及实验对比

利用格子气和软球模型建立气固两相流数值模拟计算模型，模拟计算了在同一风速下碰撞次数与粉尘粒径之间的关系，初步研究移动过滤层颗粒对粉尘尺寸的过滤选择性。计算统计的结果与实验结果对比发现，二者存在定性上的一致。计算结果表示在移动床过滤中过滤效率对尘粒粒径具有明显的选择性，而且研究结果还表明格子气自动机模型可用于模拟流体在复杂边界条件下多孔介质细微通道内部的流动。