A DSS for integrated distribution of empty and full containers

A DSS integrating empty and full containers transshipment operations is presented, addressing the typically unbalanced export/import containers trading problem. The problem is modeled as a network, where nodes represent customers, leasing companies, harbors and warehouses, while arcs represent transportation routes. The underlying mathematical model operates in stages, first prioritizing and adjusting full containers demands considering available empty containers supplies, and then statically optimizing costs. Transportation routes are registered and dynamically controlled, cyclically, for a given time horizon. The DSS is flexible, allowing several parameters to be configured. Experimental examples using randomly generated parameters were conducted to evaluate the effectiveness of the system.     

Integrated control design for driver assistance systems based on LPV methods

The paper proposes a control design method for a driver assistance system. In the operation of the system, a predefined trajectory required by the driver with a steering command is followed. During manoeuvres the control system generates differential brake moment and the auxiliary front-wheel steering angle and changes the camber angles of the wheels in order to improve the tracking of the road trajectory. The performance specifications are guaranteed by the local controllers, i.e. the brake, the steering, and the suspension systems, while the coordination of these components is provided by the supervisor. The advantage of this architecture is that local controllers are designed independently, which is ensured by the fact that the monitoring signals are taken into consideration in the formalisation of their performance specifications. The fault-tolerant control can be achieved by incorporating the detected fault signals in their performance specifications. The control system also uses a driver model, with which the reference signal can be generated. In the control design, the parameter-dependent linear parameter-varyingmethod, which meets the performance specifications, is used. The operation of the control system is illustrated through different normal and emergency vehicle manoeuvres with a high-accuracy simulation software.     

An overview of the model integration process: From pre-integration assessment to testing

Integration of models requires linking models which can be developed using different tools, methodologies, and assumptions. We performed a literature review with the aim of improving our understanding of model integration process, and also presenting better strategies for building integrated modeling systems. We identified five different phases to characterize integration process: pre-integration assessment, preparation of models for integration, orchestration of models during simulation, data interoperability, and testing. Commonly, there is little reuse of existing frameworks beyond the development teams and not much sharing of science components across frameworks. We believe this must change to enable researchers and assessors to form complex workflows that leverage the current environmental science available. In this paper, we characterize the model integration process and compare integration practices of different groups. We highlight key strategies, features, standards, and practices that can be employed by developers to increase reuse and interoperability of science software components and systems.     

紧密衔接工序组联动的综合调度算法

由于现有的工序间存在紧密衔接条件的复杂产品综合调度问题, 采用的移动交换算法不易于软件实现且没有考虑移动工序后产生的连锁反应引起较高算法复杂度的问题, 提出将具有紧密衔接约束条件的工序组进行统一联动的综合调度算法.该算法利用将具有紧密衔接约束条件的工序分组的扩展加工工艺树模型, 按路径上属于工序组的工序个数多少确定所在路径工序组调度的次序, 通过降低对工序组的限制要求降低算法复杂度; 对于被调度工序组中各工序的前序工序, 按工序组中工序的加工顺序确定调度次序, 对某个工序的前序工序采用复杂度较低的拟关键路径法确定工序的调度次序; 调度完所有紧密衔接工序组后, 剩余的标准工序按拟关键路径法确定调度顺序; 采取工序首次适应调度算法调度标准工序和工序组, 由于工序组中工序采取按序紧密衔接的联动调度方式确定工序组的开始时间, 避免了二次调整, 进一步降低了算法复杂度. 分析和实例表明, 所提出的综合算法比以往算法复杂度更低, 调度结果更优且更易于实现.     

集成电路技术的发展

回顾了集成电路技术的发展历史,展望了集成电路未来的发展趋势。在微电子技术诞生和发展过程中具有一些里程碑式的发明,如:晶体管、集成电路、集成电路平面工艺、MOS器件、微处理器、光刻技术、铜互连工艺的发明等。集成电路技术一直并将继续以特征尺寸缩小、集成度提高的模式,按摩尔定律预测的指数增长率发展。随着器件特征尺寸逐渐缩小并逼近其物理极限,集成电路技术的发展将受到来自于材料、工艺和物理基础等方面的挑战,呈现出多维发展的趋势,这些挑战涉及了微电子学的理论基础。     

综合业务和区分业务比较研究

为了在Internet上提供有服务质量等级和保证的服务,现在已经提出的在传输层上的实现方案包括综合业务（Integtated Services）和区分业务（Differentiated Services)。本文分析了两种方案的体系结构、工作原理和服务类型,比较了二者在设计思想、实现机制、QoS特性等方面的差异和优缺点,介绍了两种模型相互结合的扩展体系结构及最新研究进展。     

IP over ATM模型上集成服务的实现技术

文章对 Ｉｎｔｅｒｎｅｔ的集成服务和 ＡＴＭ的 ＱＯＳ要求进行了分析,并讨论了将基于 ＩＰ协议的 ＲＳＶＰ与 ＡＴＭ的 ＱＯＳ控制和管理相结合,以实现 Ｉｎｔｅｒｎｅｔ与 ＡＴＭ集成中的多业务 ＱＯＳ的主要技术。     

基于连续流程企业产品供应链的CIMS体系结构设计研究

企业集成是ＣＩＭＳ开发与设计的主要目标之一。如何有效地利用现有的各种先进技术实现相关企业的软硬件集成是实现企业集成的重要途径。该文认为对连续流程企业ＣＩＭＳ的体系结构可以考虑从纵向和横向两个方面进行研究。以纵向的观点,认为所有相关企业是由一条产品供应链动态或静态地连接在一起,其中每一个企业是前一个企业的产品销售单位,同时又是下一个企业的原料供应单位,产品供应链是一个有向网络图,企业集成的分布式网络环境的建立可以参照该图进行构造;以横向的观点,认为建立在产品供应链上的各企业的信息集成可以通过计算机协同工作技术、人工智能技术、数据库技术等实现,它随产品供应链的变化而变化,认为产品供应链上的每一个企业均是虚拟企业,它们均可以以计算机可以识别的信息进行描述与表示,企业的集成实际上就是这样一些信息在企业内部及产品供应链上（企业之间）进行动态或静态的数据集成。文章在此基础上针对连续流程企业分别讨论了软硬件环境、数据库设计、系统集成框架、供应链任务协同等相关技术的设计与实现方法。     

Designing Agent-Based Electronic Employment Markets

Two modes of matching people with jobs prevail at present: 1) hierarchical planning and 2) distributed markets. Each has strengths and limitations, but few systems have been designed to take advantage of strengths corresponding to both. With evolving information technology, however, the job-matching process could be accomplished far more equitably and efficiently using web-based markets within the firm, and intelligent agents offer excellent potential to help both potential employees and employers find one another in a distributed, electronic marketplace. But realizing this potential goes well beyond simply changing the rules of internal job matching or making agent technology available to job searchers. Rather, the corresponding markets and technologies must be designed, together, to mutually accomplish the desired results (e.g., efficient and effective matching) and conform to necessary properties (e.g., market clearing). Through the research described in this paper, we draw from Game Theory results to assess the feasibility of using two-sided matching algorithms to address this market-design problem. We also draw from current agent research to address the information technology dimension of the problem by implementing a proof-of-concept multi-agent system to enact, automate and support the corresponding market solution. This paper integrates the key economic and technological elements required to design robust electronic employment markets. And the corresponding research provides new knowledge and insight into co-development of the requisite economic markets and agent technologies.     

面向对象技术在电信综合网管中的应用

论述了面向对象技术方法,以及如何在分析和设计电信综合网络管理中应用。