基于物联网视觉的大型拥堵车辆调度系统设计

针对道路拥堵车辆调度问题,设计了一种基于物联网视觉的大型拥堵车辆调度系统,分析了系统的总体结构,给出了系统的ZigBee协调器模块、车载传感器节点、图像采集处理模块以及无线传输模块的硬件结构,详细介绍了拥堵车辆调度算法流程,并给出了车辆调度最佳路径算法代码,实现了大型拥堵车辆的有效调度。实验结果说明,所设计系统可获取有效的交通车辆拥堵图像,实现交通拥堵的高效调度。     

Internet resources for agent-based modelling

The use of agent-based models (ABMs) is steadily increasing in all the disciplines including environmental chemistry and toxicology. This growth is mainly driven by their ability to address problems that conventional modelling techniques cannot, such as the change of scale or the emergence of unanticipated phenomena resulting from interactions between their constitutive goal-directed agents. After a brief introduction on the basic principles of agent-based modelling and the presentation of selected case studies, the main software resources available on the Internet are presented. An attempt is made to estimate the complexity of these tools versus their potentialities and flexibility.     

The use of the Internet for teaching Chemistry

Over the past 20 years there have been astounding advances in computer hardware and software. Many recent developments have focused on the Internet and the World Wide Web (WWW). The Internet has made a huge impact on the way chemists work, but as yet far less on the way they teach.     

国际互联网络（Internet）上的化学及分析化学信息

本文讨论了国际互联网络（Ｉｎｔｅｒｎｅｔ）在化学和分析化学中的应用，通过Ｉｎｔｅｒｎｅｔ可以有效地进行文献检索，获取信息，另外还介绍了查找实例并给出与化学有关的站点。     

基于合作博弈纳什议价的几种网络定价结构模型比较

本文基于目前的网络资费模式,提炼出三种网络定价结构模型,研究本地网络服务提供商(ISP)及用户之间的利润分配.首先,利用一个简化的网络业务质量(Qos)保证模型构造目标函数,说明合作博弈得到的解比非合作博弈情形下更优,合作博弈时得到纳什议价解与双方的相对议价权力有关.然后,从社会结构理论角度,说明议价权力取决于网络结构类型以及局中人在结构中所处的位置.相对议价权力大,获益较多;相对议价权力小,获益较少.最后,通过实例分析得到三种网络定价结构模型下的纳什议价解.结果表明,本地网络服务提供商的合并、收购、互联有利于提高其相对议价权力,从而获益增加.     

Statistical inference in massive data sets

Analysis of massive data sets is challenging owing to limitations of computer primary memory. In this paper, we propose an approach to estimate population parameters from a massive data set. The proposed approach significantly reduces the required amount of primary memory, and the resulting estimate will be as efficient if the entire data set was analyzed simultaneously. Asymptotic properties of the resulting estimate are studied, and the asymptotic normality of the resulting estimator is established. The standard error formula for the resulting estimate is proposed and empirically tested; thus, statistical inference for parameters of interest can be performed. The effectiveness of the proposed approach is illustrated using simulation studies and an Internet traffic data example. Copyright © 2012 John Wiley & Sons, Ltd.     

From the Internet of things to the Internet of the physical world

Nowadays, we daily meet new wireless technologies. This is often achieved through the use of RFID (Radio Frequency IDentification) tags and wireless sensors. Our environment and surrounding objects become communicating. New applications thus arise in domains such as logistic, health, rescue and environment preservation. Embedding such devices in various industrial goods could lead to a world in which objects communicate and interact with other objects and with people, i.e. the so-called “Internet of things”. This article describes the various types of RFID tags, and the hot topic for research and some examples of applications are given.     

不确定需求下的网络代销平台返利优化决策

在电商与信息化时代, 网络代销平台在产品促销方面的优势越来越明显。与折扣促销不同, 返利促销需要消费者先全款购买, 再事后兑现。本文构建了一个制造商和一个网络代销平台组成的销售系统, 考虑产品需求为可加式随机且同时受价格和返利促销影响, 在Stackelberg博弈框架下研究了制造商的定价与库存策略以及网络代销平台的返利优化决策。研究发现, 当消费者对返利的敏感程度逐渐增强时, 网络代销平台会更倾向于向消费者提供更多的返利, 此时代销平台与制造商实现共赢; 而当消费者的返利兑现率逐渐增大时, 返利平台会降低返利促销的强度, 此时会导致制造商的利益受损。     

基于供应链的“互联网+回收”平台合作推广研究

针对第三方回收商自有“互联网+回收”平台知名度不高的情况,网络零售商负责销售产品、推广销售平台的同时,利用自身平台知名度向消费者宣传推广“互联网+回收”平台。文章对比分析非合作和合作情形下,供应链成员的最佳策略。研究表明:供应链成员的合作比不合作更有利;成本共担契约下的供应链合作和转移支付契约下的合作相比,网络零售商和第三方回收商投入更多的推广努力,回收价格更低,回收量更大;协同合作情形下回收量、双方的推广努力达到最大,回收价格最低。     

Technological Research of a Clean Energy Router Based on Advanced Adiabatic Compressed Air Energy Storage System

As a fundamental infrastructure of energy supply for future society, energy Internet (EI) can achieve clean energy generation, conversion, storage and consumption in a more economic and safer way. This paper demonstrates the technology principle of advanced adiabatic compressed air energy storage system (AA-CAES), as well as analysis of the technical characteristics of AA-CAES. Furthermore, we propose an overall architectural scheme of a clean energy router (CER) based on AA-CAES. The storage and mutual conversion mechanism of wind and solar power, heating, and other clean energy were designed to provide a key technological solution for the coordination and comprehensive utilization of various clean energies for the EI. Therefore, the design of the CER scheme and its efficiency were analyzed based on a thermodynamic simulation model of AA-CAES. Meanwhile, we explored the energy conversion mechanism of the CER and improved its overall efficiency. The CER based on AA-CAES proposed in this paper can provide a reference for efficient comprehensive energy utilization (CEU) (93.6%) in regions with abundant wind and solar energy sources.