多媒体计算机技术的应用及其教学课件的设计

本文根据中学地理教学的特点,选择《地球公转与四季变化》开展CAI课件设计研究。实践证明了多媒体计算机辅助教学在教学中运用的必要性。     

The Effect of Liability and Patch Release on Software Security: The Monopoly Case

An abundance of flawed software has been identified as the main cause of the poor security of computer networks because major viruses and worms exploit the vulnerabilities of such software. As an incentive mechanism for software security quality improvement, software liability has been intensely discussed among both academics and practitioners for a long time. An alternative approach to managing software security is patch release, which has been widely adopted in practice. In this paper, we examine these two different ways of mitigating customer risk in the software market: liability and patch release. We study the impact of both mechanisms on a monopolistic software vendor's decision on security quality. We find the conditions under which each mechanism is effective in terms of improving security quality and increasing social surplus. The heterogeneous nature of loss is identified to be a key factor for the effectiveness of the liability mechanism. On the other hand, patch release can be effective and welfare‐enhancing regardless of the nature of loss as long as customers incur low patching cost, and/or the vendor incurs low patch development cost. We also examine the impact of customer misperception of the outcome from vulnerable software on the effectiveness of liability.     

Optimal Enhancement and Lifetime of Software Systems: A Control Theoretic Analysis

We develop an optimal control model to maximize the net value provided by a software system over its useful life. The model determines the initial number of features in the system, the level of dynamic enhancement effort, and the lifetime of the system. The various factors affecting these optimal choices are systems characteristics (e.g., complexity, age, quality), user learning, and process maturity. We also consider that there is a time lag between the addition of a feature and the realization of its benefit to users. The basic model is extended to consider the decision of replacing the existing system by a new one.     

纸浆生产过程SU6PC与80C196单片机综合控制系统研究

通过对造纸纸浆生产过程的深入研究,提出了由SU6PC可编程控制器和80C196单片机组成的造纸纸浆生产过程综合控制系统,介绍了以草料造纸的纸浆生产过程自动综合控制方法.简要介绍了系统硬件和软件设计.     

软件开发中的测试技术

在分析了软件测试重要性的基础上 ,提出了软件测试的五大原则 ,指出软件测试的内容和步骤应基于软件生命周期的全过程 ,并就测试方法、测试策略的合理选择进行了阐述。通过对测试时间、测试成本和可靠度的关系的分析 ,给出了软件最佳测试时间的确定方法 ,并对测试工作的可靠性评价进行了探讨     

国内核电公众沟通研究热点及发展趋势——基于CiteSpace的知识图谱分析

文章以中国学术期刊网络出版总库(CNKI)2000—2021年发表的396篇核电公众沟通相关文献为基础,运用CiteSpace5.7R1软件,进行发文量统计、合作共现、关键词聚类、突现词探测等分析,揭示出国内核电公众沟通研究主要聚焦核电政策宣贯与技术知识普及、核电公众沟通与接受机理两大主题,沟通重心由“核事故处置”向“核应急预防”转变,沟通思路由“单向宣传”向“双向互动”转变并朝“构建核安全共同体”迈进。同时发现,国内核电公众沟通研究仍属小众领域,与我国从核大国迈向核强国的现实需求不相称,亟待更多学者广泛参与,推动学科交叉融合,增强研究系统性,提升学术影响力。     

The Design of Feature‐Limited Demonstration Software: Choosing the Right Features to Include

Today, software supports many important tasks in a variety of industries. In the specialized nature of these environments, a common problem faced by software vendors is to correctly signal the true value of a software product to the end users. For example, telecommunications equipment manufacturers design complex software for important functions like provisioning new users in the network. These software products automate various functions that would otherwise need to be done manually. In order to enable potential customers—telecommunications providers—to evaluate and recognize the full value of the product, equipment vendors often provide a free, feature‐limited version of the product to the customer. As the specific features included in the feature‐limited version influence whether the full product is purchased or not, it is essential that the features included in the feature‐limited version be selected judiciously. While the importance of identifying the best set of features has been well recognized, there has been little research to date that systematically addresses this fundamental business decision. This study fills this gap in the literature by providing an objective approach to the design of demonstration software. We illustrate the benefits of our approach through a case study involving the design of a feature‐limited demo for a wireless telecommunications equipment manufacturer.     

运用Camcorder配合PowerPoint制作多媒体教学软件

介绍MSOffice97软件包中常被忽视却又十分实用的软件Camcorder,并提出运用Camcorder配合PowerPoint制作多媒体教学软件的设想和实现方案