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51.
从智能大楼的概念出发,分析了智能大楼的特点及传统的配线方式存在的问题,结合国内外智能大楼的发展,介绍了一种新的综合布线系统。 相似文献
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This paper presents the abstraction of open consensus and argues for its use as an effective component for building reliable agreement protocols in practical asynchronous systems where processes and links can crash and recover. The specification of open consensus has a decoupled, on‐demand and re‐entrant flavour that make its use very efficient, especially in terms of forced logs, which are known to be major sources of overhead in distributed systems. We illustrate the use of open consensus as a basic building block to develop a modular, yet efficient, total‐order broadcast protocol. Finally, we describe our Java implementation of our open‐consensus abstraction and we convey our efficiency claims through some practical performance measures. Copyright © 2001 John Wiley & Sons, Ltd. 相似文献
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供配电设备是综合控制系统的重要组成设备,为综合控制系统提供直流供电,以及对综合控制系统所属设备进行配电控制;采用供配电一体化设计,将供电和配电功能集成在一个军用加固机箱里,有效控制了体积和重量,提高了功率密度,在设备小型化和智能化方面有所突破;供电部分采用了模块化设计,各电源模块内部采用相同的功能电路,提高了产品的标准化和互换性,提高了设备的维修保障性。 相似文献
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本文主要阐述了客车产业领域内焊接夹具模块化设计的成因,并提出了客车顶模块化设计焊接夹具设计总体思路以及能够适用于多种型号客车骨架焊装的模块化焊接夹具系统设计具体方案,能够实现X、Y、Z三个方向上的定位调节满足多种型号客车骨架组焊定位夹紧要求,提高设备生产效率. 相似文献
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Matthew R. Lakin Simon Youssef Luca Cardelli Andrew Phillips 《Journal of the Royal Society Interface》2012,9(68):470-486
DNA strand displacement techniques have been used to implement a broad range of information processing devices, from logic gates, to chemical reaction networks, to architectures for universal computation. Strand displacement techniques enable computational devices to be implemented in DNA without the need for additional components, allowing computation to be programmed solely in terms of nucleotide sequences. A major challenge in the design of strand displacement devices has been to enable rapid analysis of high-level designs while also supporting detailed simulations that include known forms of interference. Another challenge has been to design devices capable of sustaining precise reaction kinetics over long periods, without relying on complex experimental equipment to continually replenish depleted species over time. In this paper, we present a programming language for designing DNA strand displacement devices, which supports progressively increasing levels of molecular detail. The language allows device designs to be programmed using a common syntax and then analysed at varying levels of detail, with or without interference, without needing to modify the program. This allows a trade-off to be made between the level of molecular detail and the computational cost of analysis. We use the language to design a buffered architecture for DNA devices, capable of maintaining precise reaction kinetics for a potentially unbounded period. We test the effectiveness of buffered gates to support long-running computation by designing a DNA strand displacement system capable of sustained oscillations. 相似文献
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为了揭示生产实践在市场导向影响运营绩效中的作用,基于模块化视角研究客户导向与竞争导向影响运营绩效作用机理。204份有效样本的实证研究结果表明,客户导向与竞争导向均显著正向影响产品模块化(β=0-21/0-20),但是对流程模块化均无显著影响;产品模块化显著正向影响流程模块化(β=046);产品模块化对运营绩效并无显著影响,但是流程模块化显著正向影响运营绩效(β=0-29);控制变量企业规模和运营年限对运营绩效均未表现出显著作用。结果表明,模块化可以作为企业实施市场导向战略时的一种有效生产实践用于提高运营绩效,但是产品模块化和流程模块化的影响机制存在着差异。 相似文献
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L.-A. Estrada-Domínguez A. Nuñez-Carrera E. del Valle-Gallegos R. Vázquez-Rodriguez 《Energy Sources, Part A: Recovery, Utilization, and Environmental Effects》2016,38(16):2362-2369
In this study, we encompass different designs of small reactors, making a review since the beginning of the concept in the military and academic research, to the actual designs; and the prospective of this kind of reactors in the development of the nuclear industry. Small reactors were developed many years ago and have been in operation since 1950, but now, there is an increasing interest in developing small reactors for different applications or co-generation including a large variety of reactor designs with features ranging in coolant, cycle type, fuel, and energy applications; and enhancing features such as nuclear inherent safety, passive safety, and proliferation resistance. The modularity of some of these reactors makes them also a possible choice for nuclear development of some countries with units manufactured off-site and possible scaling into multimodular plants. Different lines of small reactors and current status are reviewed in this work. 相似文献
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基于嵌入式视觉的移动式自重构微小型机器人 总被引:1,自引:0,他引:1
本文提出了一种新型移动式自重构机器人。机器人包含若干可独立执行任务的移动子机器人,单元子机器人由若干模块化组件(中央处理模块、通信模块、驱动模块、弯举模块、超声模块、视觉模块等)组成,并可通过展开结构进行简单变形以增强自身机动性能与越障能力。多个子机器人可以在微型CMOS相机及其它传感器协作下自主对接为整体机器人,并可自重构为蛇形、环形等构形完成越障;在任务完成后,各子机器人可以彼此脱离,形成分布式机器人系统。为实现机器人微小型化,在模块化设计过程中大量采用了紧凑机械结构,设计了基于微型CMOS数字相机的嵌入式图像处理模块用于视觉自重构,以及基于ARM、FPGA的嵌入式中央控制器进行低能耗高效率的全局控制。单元机器人通过了完整功能测试,并完成了两个模块间的对接实验。 相似文献