一个管理信息系统的设计与开发

本文介绍了北京市医药总公司计算机信息管理系统的开发过程．对其实现中的主要技术问题一辅助决策支持预测及网络管理等进行了探讨．     

基于自适应零行列式策略的区块链矿池合作演化方法

矿工加入矿池是目前比特币挖矿最常见的方式。然而，比特币系统中存在矿池互相渗透攻击的现象，这将导致被攻击矿池的矿工收益减少，发起攻击的矿池算力降低，从而造成比特币系统的整体算力减小。针对矿池之间互相攻击，不合作挖矿的问题，提出自适应零行列式策略（AZD），采取"比较预期合作收益与背叛收益，选择促进高收益的策略"的思想促进矿池合作。首先，通过结合时序差分增强算法与零行列式策略的方法预测下一轮合作收益与背叛收益；其次，通过决策过程（DMP）选择策略进一步改变下一轮的合作概率和背叛概率；最后，通过迭代执行自适应零行列式策略，达到网络中矿池均互相合作、积极挖矿的目的。实验模拟表明，AZD策略与自适应策略相比，合作概率收敛为1的速度提高了36.54%；与零行列式策略相比，稳定度提高了50%。这个结果表明AZD策略能够有效促进矿工合作，提高合作收敛速率，保证矿池的稳定收益。     

Encouraging serendipity in research: Designing technologies to support connection-making

Mobile applications have the ability to present information to users that is influenced by their surroundings, activities and interests. Such applications have the potential to influence the likelihood of individuals experiencing ‘serendipity’, through a combination of information, context, insight and activity. This study reports the deployment of a system that sends push text suggestions to users throughout the day, where the content of those messages is informed by users’ experience and interests. We investigated the responses to and interactions with messages that varied in format and relevance, and which were received at different times throughout the day. Sixteen participants were asked to use a mobile diary application to record their experiences and thoughts regarding information that was received over a period of five consecutive days. Results suggest that participants’ perception of the received suggestions was influenced by the relevance of the suggestion to their interests, but that there were also positive attitudes towards seemingly irrelevant information. Qualitative data indicates that participants, if in an appropriate time and place, are willing to accept and act upon push suggestions as long as the number of suggestions that they receive is not overwhelming. This study contributes towards an understanding of how mobile users make connections with new information, furthering our understanding of how serendipitous connections and insightful thinking could be accommodated using technology.     

Analysis and Classification of Multi-Criteria Recommender Systems

Recent studies have indicated that the application of Multi-Criteria Decision Making (MCDM) methods in recommender systems has yet to be systematically explored. This observation partially contradicts with the fact that in related literature, there exist several contributions describing recommender systems that engage some MCDM method. Such systems, which we refer to as multi-criteria recommender systems, have early demonstrated the potential of applying MCDM methods to facilitate recommendation, in numerous application domains. On the other hand, a comprehensive analysis of existing systems would facilitate their understanding and development. Towards this direction, this paper identifies a set of dimensions that distinguish, describe and categorize multi-criteria recommender systems, based on existing taxonomies and categorizations. These dimensions are integrated into an overall framework that is used for the analysis and classification of a sample of existing multi-criteria recommender systems. The results provide a comprehensive overview of the ways current multi-criteria recommender systems support the decision of online users.     

三角模糊数在多属性决策中的建模

为了获得三角模糊数的多属性决策数学模型,将语言变量和三角模糊数引入到多属性决策中,用语言变量或三角模糊数表示多属性决策中的属性值和各属性的权重,采用加权和法求得每个备选方案的三角模糊数最终评价值,并应用三角模糊数的减法运算定义任意两个三角模糊数的优越度,在方案两两对比求得优越度后建立方案的互补判断矩阵,采用最小平方法求得方案排序向量,根据排序向量元素的大小进行方案排序。     

《Authorware课件制作》教学的探索

《Authorware课件制作》是师范类院校开设的一门实用性很强的课,是理论与实践紧密结合的一门课。针对该课程实践教学的要求以及当前教学中存在的问题,结合教学实践,在教学内容、教学理念、教学方法等各方面进行了研究和讨论。     

多媒体课件的制作与研究

本文介绍了当前多媒体教学系统,课件制作的素材来源、制作开发情况,提出课件制作中存在的问题和相应的对策.     

用PowerPoint2000 轻松制作课件

介绍PowerPoint2000制作教学幻灯片的实用技巧，据此可以制作出更加漂亮的课件。     

Measuring the success possibility of implementing ERP by utilizing the Incomplete Linguistic Preference Relations

This paper applies an analytic hierarchical prediction model based on the Multi-Criteria Decision Making with Incomplete Linguistic Preference Relations (InLinPreRa) to help the organizations become aware of the essential factors affecting the Enterprise Resource Planning (ERP), as well as identify the actions necessary before implementing ERP. The subjectivity and vagueness in the prediction procedures are dealt with linguistic variables quantified in an interval [−t, t]. Then predicted success/failure values are obtained to enable organizations to decide whether to initiate ERP, inhibit adoption or take remedial actions to increase the success possibility of ERP. Pairwise comparisons are used to determine the priority weights of influential factors, and the possible occurrence ratings of success or failure outcome amongst decision makers. There are not any inconsistency occurred in this procedures because this proposed approach allows every decision expert to choose an explicit criterion or alternative for the without restriction. When there are n criteria in a decision matrix, only n − 1 times of pairwise comparisons are taken. This approach not only improves the efficiency of pairwise comparison compared with the traditional AHP, but also avoids the checking the consistency of linguistic preference relation when the decision makers undertake the pairwise comparison processes.     

酿酒甘蔗种质资源的开发与利用

甘蔗作为制糖工业原料,其加工路径单一,产业稳定性和抗风险能力较低。酿酒甘蔗种质的开发利用,能够为甘蔗生产提供多加工用途的甘蔗品种,提高甘蔗种植效益,促进农民增收。科学合理地开发利用优异酿酒甘蔗种质也可以有效发挥甘蔗种质资源库的作用和潜力,积极有效地保护现有甘蔗种质资源。