浅谈一元微积分学在证不等式中的应用

从一元微积分知识应用的角度,给出证不等式的八种方法:极值法、最值法、泰勒公式法、凹凸性法、被积函数放缩法、柯西积分不等式法、辅助函数积分法、上凹函数积分法。     

面向政府决策的知识挖掘

在政府决策过程中,需要发掘蕴涵于政府智力资产中的隐性知识,形成决策智慧。将知识挖掘概念引入政府决策中,指出政府决策中需要挖掘的知识资产的类型,并分析知识挖掘对政府决策的作用,最后给出了政府决策过程中知识挖掘的流程。     

Use of place information for improved event tracking

The main purpose of topic detection and tracking (TDT) is to detect, group, and organize newspaper articles reporting on the same event. Since an event is a reported occurrence at a specific time and place and the unavoidable consequences, TDT can benefit from an explicit use of time and place information. In this work, we focused on place information, using time information as in the previous research. News articles were analyzed for their characteristics of place information, and a new topic tracking method was proposed to incorporate the analysis results on place information. Experiments show that appropriate use of place information extracted automatically from news articles indeed helps event tracking that identify news articles reporting on the same events.     

对企业生产缓冲的再认识

阐述了企业在当前形势下设置生产缓冲的必要性,划分了生产缓冲的类型,提出建立生产缓冲的木桶原理和替代原理,认为生产缓冲的要素之间存在相互替代的特性,在设置生产缓冲时各要素的水平应相互协调,最后探讨了生产缓冲的经济评价。     

Optimization of some factors affecting the performance of query expansion

This paper examines the factors affecting the performance of global query expansion based on term co-occurrence data and suggests a way to maximize the retrieval effectiveness. Major parameters to be optimized through experiments are term similarity measure and the weighting scheme of additional terms. The evaluation of four similarity measures tested in query expansion reveal that mutual information and Yule's Y, which emphasize low frequency terms, achieve better performance than cosine and Jaccard coefficients that have the reverse tendency. In the evaluation of three weighting schemes, similarity weight performs well only with short queries, whereas fixed weights of approximately 0.5 and similarity rank weights were effective with queries of any length. Furthermore, the optimal similarity rank weight achieving the best overall performance seems to be the least affected by test collections and the number of additional terms. For the efficiency of retrieval, the number of additional terms needs not exceed 70 in our test collections, but the optimal number may vary according to the characteristics of the similarity measure employed.     

企业技术创新中的风险及其控制

论述了企业技术创新是既具有潜在高效益，又具有潜在高风险的科学技术研究活动。分析企业技术创新中的风险，是为了让技术创新成果的持有者、接受者认识到技术创新的风险性及产生的原因，便于双方及时采取有效的措施，把风险控制在最小范围。从企业技术创新过程出发，分析了企业技术创新存在的风险，并根据这些风险产生的原因，探讨了其防范措施。     

专利引文分析在企业竞争情报中的应用

专利文献是技术创新的记录，而专利技术的被引频次能够反映该专利的重要程度。本文从这个角度出发，概述了专利引文分析在企业竞争情报中的具体应用，如评估竞争对手的技术实力等。     

大陆与台湾的竞争情报产业发展及其比较研究

通过对大陆与台湾地区竞争情报产业发展态势、特点和应用效果的比较分析,总结了岛内开展产业竞争资讯分析(竞争情报)活动的经验及其给我们的启示,以期能够促进两岸竞争情报业的相互了解和合作。     

我国农业产业化龙头企业的发展趋势及其对策

龙头企业是农业产业化经营的关键.近年来,龙头企业在发展过程中呈现出一些比较显著的发展趋势.为了强化这些趋势的正面作用,并弱化其负面影响,本文从这些趋势影响和产生的原因分析入手,分别从政府和企业两个方面提出若干对策,以促进龙头企业健康、快速、持续发展.     

互联网时代科学传播如何自洽和有为——以转基因、PX项目的科学传播为例

文章以近年来国内科学传播热点事件为案例,从议题变迁的角度梳理了事件在科学传播上的基本路径及产生的社会背景,提出恰恰是所处传播链条上各主要环节的封闭性等原因,导致公众"不理解"科学以及当下科学传播的无序状态。文章同时从搭建交流平台、营建社会信任以及媒体转型3方面,对互联网时代媒体如何创新发展、如何在科学传播中继续发挥主导性作用提出意见和建议。