Optimal pollution control with distributed delays

We present a model of optimal stock pollution control with general distributed delays in the stock accumulation dynamics. Using generic functional forms and a distribution structure covering a wide range of distributions, we solve analytically the complex dynamic system that arises from the introduction of these distributed delays. From a theoretical standpoint, our contribution extends the dynamic optimization literature that focused on single discrete delays and develops an original method to address control problems written as mixed type functional differential equations with general kernels. Our results show the qualitative impact of acknowledging these distributed delays on the optimal pollution paths dynamics. We study analytically the properties of the dynamics and we identify the conditions for the occurrence of limit cycles. This theoretical work contributes to the design of efficient environmental policies in the presence of complex delays.     

The limits to designed orders: Authority under “distributed knowledge” conditions

We examine the argument, put forward by modern management writers and, in a somewhat different guise by Austrian economists, that authority is not a viable mechanism of coordination in the presence of “distributed knowledge” We define authority and distributed knowledge and argue that authority is compatible with distributed knowledge. Moreover, it is not clear on theoretical grounds how distributed knowledge impacts on economic organization. An implication is that the Austrian argument that designed orders are strongly constrained by the Hayekian dispersed knowledge (Hayek, Kirzner, Sautet) is less decisive than it has usually been taken to be. The positive flipside of this argument is that Austrians confront an exciting research agenda in theorizing how distributed knowledge impacts economic organization. JEL Codes B53, L20     

基子．NET框架的下一代停车场付费系统的设计

通过对现行停车场管理系统的研究，提出了基于．NET框架的下一代智能停车场付费系统的设计方案。该方案设计的停车场付费系统具备跨平台和终端设备无关的能力，同时具有可重用性（即易扩展和易升级的优点），根据方案实现的试验系统验证了方案的有效性。     

以MCS-51单片机为核心研制的四脚步行机器人分布式控制系统

本文描述一个四脚步行机器人的微处理器分布式实时控制系统,介绍系统的主从分布式松耦合结构.该系统采用了2只8088CPU,一只8087协处理器和14只8031单片机.文中设计了一个系统管理员来负责整个系统的时序控制,用C写的系统管理程序具有移植性好和执行速度快的特点.而松耦合的任务处理器则根据系统管理员的指令来执行特定的算法.本文将首先介绍把整个系统控制分解为一组单独执行的任务(即电机伺服)的方法,然后重点讨论基于8031单片机的全数字式直流伺服系统的设计以及步行机的实时控制等问题.模块化设计、并行处理、数字化和分布控制技术使得整个控制系统的性能和可靠性均得到了提高.     

区块链:一种新的征信视角与技术架构

区块链是未来信息技术的一个重要方向,区块链技术和征信系统的结合是全球的研发热点。阐述征信的概念、信息技术在征信业发展过程中的作用以及征信市场的痛点,提出新技术背景下面临的挑战。为使区块链技术与征信更有效地结合,回顾区块链的产生、发展背景,对“初级版本”区块链和普通意义上的区块链进行详细解析,逐步发现区块链对构建一种新的征信视角的重要性。区块链也可以为传统征信体系提供技术架构。基于对新技术的包容态度,提出区块链监管的政策建议,并对区块链技术应用前景进行展望。     

我国分布式能源发展探讨

随着中国能源和环境政策的进一步调整,分布式能源将成为未来中国应对能源供给安全和气候变化挑战的重要选项之一。然而分布式能源的技术类别、应用场合等因素千差万别,作者通过对分布式能源的定义、主要利用方式、在中国的发展现状及面临的挑战进行归纳分析,为分布式能源在中国的进一步发展提供理论参考。     

工业远程多媒体监控系统的设计与实现

本文介绍了作者研究开发的某工业设备远程监控系统的设计思想与相关问题的解决方法。全文探讨了3个主要的问题：实时数据的优先级管理及分布式多级缓冲、基于注册／注销管理模式的数据采集管理与柔性系统设计思想以基于多线程的信息融合。     

Collaboratories as a new form of scientific organization

Science is an inherently collaborative enterprise and this trend has accelerated over the past few decades. In particular, the Internet creates new possibilities for the organization of joint scientific work, specifically among geographically separated collaborators. A notable instance of Internet-mediated science is the collaboratory, or a laboratory without walls, where scientists are connected to each other, to instruments, and to data independent of time and location. This paper explores past and current collaboratory efforts to identify both characteristics that define a collaboratory and factors of collaboratory use that predict scientific success and failure. The paper concludes with an assessment of directions for future collaboratory development.     

Communication protocols for order management in collaborative manufacturing

Collaborative manufacturing requires efficient and cost effective communications among the partners. To provide efficient and reliable communications, this research modularizes the design of communication protocols for order management in collaborative manufacturing. Ten protocol modules have been defined and designed in this research.With the 10 protocol modules, companies can easily construct the protocols to regulate the interactions between partner companies. This research designs five protocols associated with order management in collaborative manufacturing. The protocols are also implemented in a distributed computing environment. The results indicate that the modularized protocols ensure the reliability and efficiency of communications, and reduce the complexity in protocol design.     

IEEE802.11b的DCF退避算法实现技术探究

本文研究了无线局域网IEEE802.11b的MAC层基于随机竞争的分布式协调功能（DCF：Distributed Coordination Funct0ion）的基本信道访问方式的实现技术。DCF主要包括载波侦听机制、随机退避机制、帧优先级机制等。它定义了两种工作方式,一种是基本访问方式CSMA/CA,基于物理信道的载波侦听;另外一种是基于RTS/CTS虚拟载波侦听,这种方式在CSMA/CA的基础上增加两个长度特别小的数据包RTS和CTS来克服＂隐藏终端＂问题。可以通过对这两种载波侦听机制的研究,并利用SDL图和状态转移图,完成退避算法的软件实现。