Time flexibility to reduce climate change mitigation costs for Japanese electricity supply sector

The idea of greenhouse‐gas credit borrowing in global or national context faces severe problems such as international and intergenerational equity issues. Though the merit of cost reduction is obvious, the possibility is small for such a scheme to be massively allowed in future international negotiations. Still, there is a good chance for each specific player to use the idea of time flexibility. Through analytic and numerical model analysis, this paper demonstrates the merits of time flexibility on a sector base. First, the derived analytic solution for time paths of marginal mitigation costs gives an insight to the relation between timing and costs of mitigation action. Second, the numerical model analysis for the Japanese electricity supply sector shows that time flexibility can drastically reduce costs for mitigation in the sector. Time flexibility is important specifically to the Japanese electricity supply sector because (1) the sector is capital intensive and has long capital turnover time and (2) available mitigation option is limited for the near future. A sector like the Japanese utility sector needs some kind of mechanism to virtually realize the merits of using time flexibility. Domestic and international emission trading systems are the most promising candidate to date. © 2000 Scripta Technica, Electr Eng Jpn, 131(1): 68–77, 2000     

Tiered bandwidth reservation scheme for multimedia wireless networks

It is important to provide quality of service (QoS) guarantees if we want to support multimedia applications over wireless networks. In this paper, considering the features of tiering in sectored cellular networks, we propose a novel scheme for bandwidth reservation to approach QoS provisioning. By predicting the movement of each connection, the reserving of bandwidth is only required in needful neighboring cells instead of in all neighboring cells. In addition, an admission control mechanism incorporated with bandwidth borrowing assists in distributing scarce wireless bandwidth in more adaptive way. Through mathematical analysis, we proof the advantages of tier‐based approach and the bound for the selection of tiered boundary. The simulation results also verify that our scheme can achieve superior performance than traditional schemes regarding no bandwidth reserving, fixed bandwidth reserving, and bandwidth borrowing in sectored cellular networks when performance metrics are measured in terms of the connection dropping probability (CDP), connection blocking probability (CBP), and bandwidth utilization (BU). Copyright © 2008 John Wiley & Sons, Ltd.     

Convoluted Flesh: A Synthetic Approach to Analogue and Digital Architecture

Marcos Cruz and Marjan Colletti advocate their own distinct design approach that is intuitive and blissful in its opulence, evoking the sublime.Here they discuss the potential of opening up ‘new spatial, or material possibilities’ that are liberated from the self-imposed restrictions of their more technologically driven contemporaries. Copyright © 2008 John Wiley & Sons, Ltd.     

数据挖掘技术在高校图书馆信息管理系统中的应用

针对目前图书馆对读者信息的获取停留在比较浅显的层面,缺乏深层次的信息加工和数据的综合分析等问题,基于数据挖掘技术,通过数据清理、数据整合,并加上规约算法,对图书馆信息管理的数据进行挖掘和预测.实践表明,该方法可实现对读者的借阅行为、图书需求和阅读兴趣等信息的挖掘和预测,以便调整和提高图书管理策略.     

GRNN在图书馆电子资料借阅服务评价中的应用

以图书馆电子资料借阅服务的服务质量问卷调查结果及其人工评价原理为依据,对所得到的数据进行量化,构建基于GRNN神经网络的图书馆电子资料借阅服务评价模型,分析了这种方法的优点,并进行实验,验证了这种评价模型的科学性。     

Dynamic Flow Model for Borrowing Channel Assignment Scheme in Cellular Mobile System

A mathematical model that predicts the dynamic flows in cellular mobile networks that allocate channels using the Borrowing Channel Assignment (BCA) scheme is described in this paper. Two types of handoff procedures – the prioritized and non-prioritized schemes – will be considered in the model. Discrete event simulations were performed and the results were found to be comparable to the results obtained using the mathematical model. Application to comparative study of the dynamic behaviours of the BCA and the Fixed Channel Assignment (FCA) schemes is also presented.     

确定数学核心期刊的Fuzzy数学方法

本文利用Fuzzy综合评判数学模型,给出了确定各专业或学科的核心期刊的方法。对于高校和科研单位的专业情报资料的建设具有实用价值。     

基于小波支持向量机的图书馆借阅量预测

当前图书馆借阅量预测方法无法描述混沌性等非平稳变化特征,导致图书馆借阅量预测错误差大,为了改善图书馆借阅量的预测效果,设计了基于小波支持向量机的图书馆借阅量预测方法。首先对当前国内外图书馆借阅量的预测研究现状进行分析,找到引起图书馆借阅预测误差大的原因,然后收集图书馆借阅量预测的历史数据,并通过混沌分析算法对历史数据进行重新构造,并引入小波支持向量机实现图书馆借阅量预测模型的建立,最后与其它图书馆借阅量的预测方法在相同环境进行对比测试。提出的方法可以对图书馆借阅量的变化特征进行深度挖掘,图书馆借阅量预测精度超过95%,高于对比方法图书馆借阅量预测精度,获得更加可靠的图书馆借阅量的建模和预测结果。     

"母词"作为术语使用的问题

本文历时探讨了"字母词"的成因及其作为术语使用近年来给国内学术界在相关研究过程中带来的一些问题和困惑。     

规范化序列模式在读者借阅行为模式挖掘的应用研究

高校图书管理系统经过多年运行产生了大量借阅数据,为从借阅数据中发现读者借阅图书的行为模式和借阅规律,提出使用PrefixSpan算法对借阅数据进行序列模式挖掘。为平衡序列模式中支持度和长度各自的重要性,将挖掘结果进行规范化处理,得到带有权值的序列模式。通过对带有权值序列模式进行分析,可得到读者借阅图书的前后衔接关系和借阅规律,根据这些借阅规律可对读者进行借阅指导。