A Reference Framework for Concurrent Engineering

Considering the diversity of methods and tools offered to concurrent engineering, the aspects playing important roles in the concurrent engineering c ontext have been pinpointed as being four core elements which are Activity, Meth od, Object and Information. Based on these four elements, a reference framework called AMOI is proposed to be the guideline for the systematic concurrent produc t design. Using the AMOI reference framework, concurrent product development sys tem can be structured into four function models (including the activity model, m ethod model, object model and information model) which are interconnected with e ach other.     

普瑞博思治疗急性胰腺炎疗效观察

目的：观察用普瑞博思（西沙必利）治疗急性胰腺炎的疗效。方法：不用禁食水及胃肠减压，而口服普瑞博思１０ｍｇ一日３次，服药后呕吐加服适量本药，同时静点妥布霉素及西米替丁。结果：治疗组进食早，使用解痉镇痛药量少，缓解疼痛快。结论：使用普瑞博思治疗急性胰腺炎，无胃肠减压之痛苦及不便，进食早，缓解疼痛快，住院时间短，费用低。     

PON突发式光接收模块的指标及其测试系统

基于ＴＤＭＡ 的无源光纤接入网（ＰＯＮ），具体分析了其关键部件——突发模式光接收模块的性能特点，提出了描述该模块的几项重要指标，设计制作了一具体的指标测量系统并说明了测量步骤．     

森林致命性病虫害模型的解及稳态分布

在一定条件下得到定常同龄纯林致命性病虫害的林龄结构模型解的存在唯一性，给出解的解析表达形式，并计算出模型的稳态分布     

Synthesis and phase behavior of ω-(cholesteroxycarbonyloxy)-alkyl 3,3,5,5-tetramethyl-3,5-disila-4-oxacyclohexyl-carboxylate

Four new organosilane compounds containing cholesteryl group were synthesized by esterification of 3,3,5,5-tetramethyl-3,5-disila-4-oxa-cyclohexane-1-carboxylic acid and ω-hydroxyalkyl, cholesteryl carbonate in the presence of DCC and DMAP. Their structures were characterized by¹H-NMR, IR and elemental analysis. Their phase behaviors were investigated by differential scanning calorimetry (DSC) and polarized microscopy. Results showed that these four organosilane compounds were all liquid crystalline and longer spacer was advantageous to orientation of organosilane heterocycle and cholesteryl group. Biography: TANG Hong-Ding (1972-), male, Ph. D candidate, Research direction: orgenosilicon materials     

Two methods to solve the ionospheric electron concentration horizontal gradient at Chongqing

The electron concentration horizontal gradient vector of the ionosphere and its south-north and east-west components over Chongqing station are analyzed and calculated, using the first approximation, time correlation and space correlation and another approach introduced. And then, the validity of the two methods is analyzed and compared. Foundation item: Supported by the National Natural Science Foundation of China (69571020) and the Research Fund for the Doctoral Program of Higher Education (RFDP1999048602) Biography: Chong Yan-wen(1972-), male, Ph. D. candidate, research direction: ionospheric modeling and inversion.     

利用生产钛白的副产物硫酸亚铁制备透明铁黄

本文介绍了利用生产钛白的副产物硫酸亚铁制备透明铁黄的实验方法，考察了影响晶种质量及晶种氧化过程的主要因素，晶种制备过程控制温度为２５℃，加入分散剂，静置熟化０。５ｈ，氧化过程中控制ｐＨ值在８．５￣９．０，温度３５℃，反应２４ｈ后，将溶液过滤洗涤，单分散性较好。     

高分子量聚丙烯酸钠的合成工艺研究

采用水溶液聚合法,研究了单体浓度、引发剂用量、反应温度及反应时间对聚丙烯酸钠分子量的影响,探索出了最佳工艺条件:反应温度为40℃-45℃,反应时间为4h,过硫酸铵用量为0.02%,单体浓度为45%,聚丙烯酸钠分子量高达106-107。     

高校软件测评实验室建设研究

高校建设软件测评实验室有国家相关政策的鼓励支持与发展,就业前景较好,但我国软件测评人才培养起步较晚,人才培养模式、培养方法、甚至课程开设等经验不足.因此,高校软件测评实验室的建设应该包含管理体系、环境体系、业务流程体系、技术能力体系四个方面,走产学研相结合的道路.     

鄱阳湖区两套水面数字的解读——以余干县大塘乡的资料为例

本文以鄱阳湖在社会生活里为考察对象,在前人研究的基础上,充分结合所获得的族谱、官方档案、口述资料等,力求能够更加深入地反映湖区人群在历史时期的生存状态,为湖区更加和谐持续的发展提供借鉴。