一种改进算法的化学数据挖掘系统原型研究初探

本文介绍了一种针对化学数据分析的挖掘系统原型实现和设计理论。阐述从化学数据分析的角度开发一个联机分析数据挖掘系统原型的理论过程，研究过程采用数据仓库提供的OLAP技术进行关联规则挖掘，提供了一种数据项的二进制编码技术，对于提高数据信息的处理能力和可靠性有一定意义。预期实现从各种文献资料或数据库自动抽取有关化学反应的信息，发现新的有用化学成分，完成合成设计和反应预测等功能，从而对数据挖掘的实现进行了有益的尝试。     

基于RSA和高级数据加密标准的网络数据加密方案

阐述了公开密钥密码技术RSA算法和最新的数据加密标准AES,利用AES算法的效率以及DES算法中密钥产生和管理的方便性等特点。并将两者结合起来,提出了一种新的网络数据加密方案,该网络数据加密方案可以有效地解决数据在网络传输中的保密性等问题。     

基于Panel Data的开放式基金赎回因素分析

本文采用2002年2季度至2007年1季度的季度非平衡面板数据(Unbalanced Panel Data)对影响我国开放式基金赎回的因素进行实证分析.研究表明,股票市场指数、基金净值以及基金分红等收益性因素对赎回的影响非常显著.     

Representing the Twittersphere: Archiving a representative sample of Twitter data under resource constraints

The rising popularity of social media posts, most notably Twitter posts, as a data source for social science research poses significant problems with regard to access to representative, high-quality data for analysis. Cheap, publicly available data such as that obtained from Twitter's public application programming interfaces is often of low quality, while high-quality data is expensive both financially and computationally. Moreover, data is often available only in real-time, making post-hoc analysis difficult or impossible. We propose and test a methodology for inexpensively creating an archive of Twitter data through population sampling, yielding a database that is highly representative of the targeted user population (in this test case, the entire population of Japanese-language Twitter users). Comparing the tweet volume, keywords, and topics found in our sample data set with the ground truth of Twitter's full data feed confirmed a very high degree of representativeness in the sample. We conclude that this approach yields a data set that is suitable for a wide range of post-hoc analyses, while remaining cost effective and accessible to a wide range of researchers.     

基于数据仓库的咨询管理模式研究

本文在分析我国咨询服务业目前发展状况的基础上 ,设计了基于数据仓库的咨询管理模式 ,描述了其结构和功能     

Cyberstalking, personal privacy, and moral responsibility

This essay examines some ethical aspects of stalkingincidents in cyberspace. Particular attention is focused on the Amy Boyer/Liam Youens case of cyberstalking, which has raised a number of controversial ethical questions. We limit our analysis to three issues involving this particular case. First, we suggest that the privacy of stalking victims is threatened because of the unrestricted access to on-linepersonal information, including on-line public records, currently available to stalkers. Second, we consider issues involving moral responsibility and legal liability for Internet service providers (ISPs) when stalking crimesoccur in their `space' on the Internet. Finally, we examine issues of moral responsibility for ordinary Internet users to determine whether they are obligated to inform persons whom they discover to be the targets of cyberstalkers.     

Informational privacy and moral values

A case from 1996 in Oregon in which citizens' legally publicmotor vehicle information was disseminated on a World Wide Website is considered. The case evoked widespread moral outrageamong Oregonians and led to changes in the Oregon records laws.The application of either consequentialist ornon-consequentialist moral theories to this and otherinformational privacy cases is found to be inadequate.Adjudication of conflicting desires is offered as the appropriateanalytical model for moral disputes. The notion of adjudicationoffered here diverges from traditional moral theories in itsindeterminate nature.     

Misconceptions about data-based decision making in education: An exploration of the literature

Research on data-based decision making has proliferated around the world, fueled by policy recommendations and the diverse data that are now available to educators to inform their practice. Yet, many misconceptions and concerns have been raised by researchers and practitioners. To better understand the issues, a session was convened at AERA’s annual convention in 2018, followed by an analysis of the literature based on misconceptions that emerged. This commentary is an outgrowth of that exploration by providing research, theoretical, and practical evidence to dispel some of the misconceptions. Our objective is to survey and synthesize the landscape of the data-based decision making literature to address the identified misconceptions and then to serve as a stimulus to changes in policy and practice as well as a roadmap for a research agenda.     

动态数据交换及其在Delphi中的实现

本介绍了windows应用程序间一种数据交换技术－动态数据交换技术的原理，并探讨了Delphi的动态数据交换实现机制。     

分组数据在指数分布场合下的最优等间距问题

本文基于不完全样本中的分组样本研究方法,当失效数据服从指数分布时,对给定的两个加速应力水平下的恒加试验进行了分析和探究,并讨论了在平均寿命的对数的渐近方差达到最小的时候,对受试元件观察的等间隔时间问题.