官方统计制度的国际比较

对目前世界上现存的两种官方统计制度———集中型统计制度和分散型统计制度进行了概述与比较 ,分析了它们各自的优缺点及形成的原因 ,并阐述了当前世界经济形势下官方统计制度的发展趋势     

Dy—Gly—V_(B_6)三元配合物的合成与表征

用无水稀土氯化物与甘氨酸(Gly)、维生素 B_6(V_B_6)在一定条件下反应制得了 Dy—Gly—V_B_6三元配合物。经元素分析,IR 与荧光分析,摩尔电导及粉晶 X射线衍射对配合物进行了表征。     

PSC评分偏误再探

国家普通话水平测试(PSC)在经历了十年的运行之后,测试研究已逐步趋向于深层次方向的问题探讨,对评分偏误现象及造成评分偏误的因素的研究是其中的一个方面。对造成评分偏误的因素的分析除了要关注测试本身在设计上的一些因素之外,还要关注汉语的特点、测试员的因素以及在测试过程中的各种外在因素。此文同时还试图通过对各种制约因素的梳理,探讨不同等级之间的客观的评分差异。     

Generic Strategies and Business Performance: an Empirical Study of the Screw Machine Products Industry

Select businesses in industry may attempt to compete through distinct strategies. But some may be successful in adopting distinct strategic profiles while others may not prove successful. In this study it was expected that six different groups of businesses might be present in the empirical exploration – those competing successfully with the low cost strategy and those competing unsuccessfully with this strategy; those competing successfully with the differentiation strategy and those competing unsuccessfully with this strategy; and those competing successfully with low cost and differentiation strategies and those competing unsuccessfully with these strategies. The results of the investigation portray the presence of three strategic profiles. They are unsuccessful low cost businesses with the lowest performance, unsuccessful differentiated businesses with the second lowest performance, and successful businesses with combination strategies with the highest performance.     

从NAFTA十年成效看南北型区域经济合作

北美自由贸易协定(NAFTA)实施已有十周年,囊括了4.2亿人口和11.4万亿美元的GDP,使北美自由贸易区成为当今世界上最大的自由贸易区。尤其是墨西哥的加入,使得NAFTA成为第一个由一个发展中国家与两个发达国家所组成的非多边自由贸易协定。10年来,由于取消贸易壁垒和开放市场,美加墨三国都实现了经济增长和生产力提高。NAFTA可以看成是南北型区域经济合作的成功范例,其10年发展成效也给了我们若干有益的启示。     

A New delay control method for real-time flows

This paper presents a novel control algorithm to decrease the worst-case delay bound for high rate homogeneous and heterogeneous real-time flows when the network traffic load becomes heavy. The algorithm is adaptive based on the instantaneous network situations. It employs a generalized form of traditional (σ,ρ) regulator called the generalized (σ,ρ,λ) regulator that operates like the (σ,ρ) regulator under the normal network traffic load situation, but provides more regulations for the heavy network traffic load situation. For a set of real-time flows, we can show that D _rg ≤D _g where D _rg and D _g are the worst-case delay bounds with the (σ,ρ,λ) regulator and the (σ,ρ) regulator respectively. More specifically, we have developed a set of formulas to set the parameters for the new regulator so as to reduce the worst-case delay bounds for the real-time flows. We can prove that there exists a threshold input rate ρ^* such that D _rg = D _g for ρ≤ρ^* and D _rg < D _g for ρ > ρ^*. When the average input rate of real-time flows is very high, the generalized regulator can effectively control the delay. The extensive experiment data match our theoretical results. The part of this paper has been appeared in The 23 ^rd IEEE International Conference on Distributed Computing Systems, 2003. The work is supported by CityU strategic grant Nos: 7001777 and 7001709 and CityU ARP Project No. 9610027. H. Wang was partially supported by National Natural Science Foundation of China (10471088, 60572126) and CityU strategic grant no. 7001709. Wanqing Tu is now with Department of Computer Science, The Hong Kong University of Science and Technology. Clear Water Bay, New Territories, Kowloon, Hong Kong.     

浅论单位盗窃的立法完善

单位盗窃行为的性质众说不一 ,本文从犯罪的本质、盗窃罪的主要特征、司法实践的刑事处理论证 ,认为单位盗窃属于犯罪行为 ,并提出增设单位盗窃罪的设想。     

丁玲精神世纪长存--迎接丁玲百年诞辰

丁玲是一位伟大的无产阶级革命家、作家,中国妇女的榜样和模范.她给后人留下了极为丰富和宝贵的精神财富.这笔重要的财富,不仅仅限于她撰写的近三百万字的各类脍炙人口的著作,更重要的是凝聚和体现在这些作品及她一生言行中的高尚风格和品质.它们集聚和表现为丁玲精神.丁玲精神是巾帼精神的完美体现;丁玲精神是延安精神的代表;丁玲精神是中华民族精神的象征;丁玲精神是人类理想的写照.     

基于SNMP的光突发交换网络管理方案

介绍了光突发交换网的原理与体系结构,论述了基于简单网络管理协议的光突发交换网络管理的实现,其中包括网络管理的模型与体系结构,管理端与嵌入式代理端开发工具的选择,光突发交换网的核心节点与边缘节点管理信息库的设计与扩展,配置管理、性能管理及故障管理三大网管功能的实现。     

以模拟为基础的氨合成塔内件优化设计计算

本文提出以模拟为基础，以氨净值为目标函数，以上绝热层，冷管层，下绝热层高度为调优变量的氨合成塔内件优化设计计算方法，并编制了相应的计算程序，实例表明本法具有简单、可靠、快速等特点。