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    基于ARM和GPRS的无线远程图像监控系统的设计与实现外文翻译资料

    英语原文共 7 页, 基于ARM和GPRS的无线远程图像监控系统的设计与实现 摘要 为了减小无线图像监控系统中一些限制因素例如距离、区域和时间的不良影响,这篇文章设计了一个基于ARM和GPRS,通过数字成像技术和网络传输技术实现的无限远程图像监控系统。该系统充分发挥了嵌入式图像采集与处理的优点:低噪音、低能耗、高可靠性与GPRS网络的低成本。实验结果显示此系统有便于设计、性能可靠、实时图像远程传输、随时随地布置的优点,具有很广泛的应用价值。 简介 近些年随着经济的发展,人们对于远程现场监管有了更高的要求。他们需要更多的实时的图形信息,因为图形是信息最直观最具体的表达,图像监控是最重要的应用。随着最新的嵌入式技术和网络通信技术的发展,图像监控变得更加数字化、网络化和集

    基于量子遗传智能算法的双电机混合驱动系统电动汽车动力系统匹配与优化外文翻译资料

    英语原文共 12 页, 基于量子遗传智能算法的双电机混合驱动系统电动汽车动力系统匹配与优化 摘要 为了增加续航里程,提高纯电动汽车的整体性能,本文提出了一种新型的双电机混合动力驱动系统。该系统实现了两个电源之间的转矩 - 速度耦合,大大拓宽了电机的高性能工作范围;同时,实现了无级变速(CVT)以有效地增加行驶里程。使用“全局优化方法”确定动力系统参数;因此,车辆的动力性和经济性被当作优化指标。在初步匹配的基础上,引入量子遗传算法优化双电机混合动力系统的匹配。在Matlab / Simulink和AVL-Cruise的组合仿真平台上进行了向后仿真,以优化,仿真和验证传动系统的系统参数。结果表明,量子遗传算法在处理多目标和多参数优化时具有良好的全局优化能力和收敛性。电动汽车的双电机混合驱动系统很好满

    什么是创新型生态系统?外文翻译资料

    英语原文共 11 页, 什么是创新型生态系统? 德博拉·杰克逊 国家科学基金会,弗吉尼亚州阿灵顿 一、与生物生态系统的类比 人们希望在创新生态系统和自然界中观察到的生物生态系统之间有一个概念上的类比。生物生态系统是一个包括所有生物的系统(生物因素)一个地区及其物理环境(非生物因素)作为一个整体共同起作用。它的特征是一个或多个平衡状态,其中存在一组相对稳定的条件,以保持人口或营养物质交换在理想的水平。生态系统具有特定的功能特征,这些功能特征具体地调节变化或维持所期望的平衡状态的稳定性。 在生物系统中,平衡态是通过模型的能量动力学来描述的生态系统操作吗?在这种情况下,能量就是捕食者和猎物之间的关系,植物传递能量;卡路里是通过消耗猎物来燃烧的,从而传递能量。

    基于ITS的信息采集技术的应用与发展研究外文翻译资料

    英语原文共 15 页, 物联网智能交通系统 作者:P. Pyykouml;nen*a, J. Laitinena, J. Viitanena , P. Elorantab ,T. Korhonenc a 芬兰国家技术研究中心,坦佩雷,芬兰 b Mobisoft,坦佩雷,芬兰 c Mattersoft,坦佩雷,芬兰 摘要 本文提出了一种将IoT(物联网)应用于智能交通系统的新模式。智能交通系统是利用路侧单元(RSU)摩擦监测、车辆环境传感器和一个通过不同的平台进行数据传输的数据库实现的。该系统能够从固定的路侧单元(RSU)站或移动车辆采集传感器数据并保存到数据库。试验结果表明,研制的ICOR摩擦监测单元能够区分不同的道路气象类别(冰、雪、湿和干沥青)具有足够的精度。通信是利用一种在路侧单元和车辆或3G/4G移动之间连接的车辆-基础设施(V2I) /基础设施-车辆(I2V)的IEEE 802.11p通信实现的。在本文中,我们

    IPM电机驱动电动助力转向系统性能评价外文翻译资料

    英语原文共 5 页 IPM电机驱动电动助力转向系统性能评价 阿肯迪 贾法尔·米利蒙法雷德 卡维姆马里凯 Amirkabir理工大学(德黑兰理工学院) 伊朗德黑兰哈菲兹大街424号电力系统卓越中心,15914。 摘要:随着微处理器、电力电子变换器和电动机驱动技术的发展,采用电动机的电动助力转向系统在几年前就开始使用了。与传统液压动力转向系统相比,电动动力转向系统在发动机效率、空间效率和环境兼容性方面具有许多优势。本文介绍了一种用于动力转向的内永磁电机的设计与优化。采用直接搜索法进行优化。对电动助力转向系统内部永磁电机和机械部分驱动进行了仿真,并对系统进行了性能评价。 指标术语:电动助力转向,内永磁电机,优化。 一、导言 由于电机、电源转换器、传感器和数字控制系统的最新进展,新型

    基于人脸识别的嵌入式门禁系统:一份调查外文翻译资料

    英语原文共 4 页, 基于人脸识别的嵌入式门禁系统:一份调查 卡西姆bull;艾尔舍贝尼, 普雷bull;马拉纳特, 彼得bull;比亚尔 伍伦贡大学电子计算机与电信工程学院,北伍伦贡,新南威尔士州2522 澳大利亚 电子邮箱:qas996@uowmail.edu.au I. 简介 高效准确的嵌入式门禁系统对于许多安全应用来说都是非常重要的,例如自动取款机的授权识别和使用门禁系统的员工考勤。嵌入式门禁系统可以自动工作是基于多种成熟的识别技术其中之一。一般的识别技术可分为非生物识别技术和生物识别技术。非生物识别技术利用密码和门禁卡的方法来识别一个人,而生物识别技术使用指纹、虹膜或人脸识别方法来进行个人识别。由于非生物识别技术极易受到操纵和盗窃问题的影响,因此生物识别技术在人员识别方面更有效。众所

    以用户为中心的设计与传统的工业设计的结合:主观化与客观化设计思维的平衡外文翻译资料

    The combination of user centered design and industrial design: Balance between subjective and objective design Abstract: Traditional Industrial Design has been an important aspect in the New Product Development process within the last decades. User centered design is a growing research field for product innovation which needs support from both design knowledge and research methodologies. Both TID and UCD focus on users perspective when doing multi-disciplinary work. They take care of style, usability, and balancing the users need and reality. The skills from TID help design expression and realization to communicate efficiently with other participants by informative images and real prototypes. The methods from UCD help the idea generation and opportunity discoveries by facilitating workshops and conducting interview with participants. TID and UCD represent different perspectives of the subjective and the objective respectively. Key words: component; UCD; industrial design; pr

    国家治理对有效全球治理的影响外文翻译资料

    The Implications of State Governance for Effective Global Governance Xuelian Liu and Lu Yao Social Sciences in China, 2016, No.6 Abstract: Since the Third Plenary Session of the 18th Central Committee of the CPC put forward the goal of modernizing the state governance system and state governance capacity, research on state governance theory and practice has taken off in the Chinese academic community. However, very little research has been undertaken on the relationship between state governance and global governance. In an interdependent world where domestic and international boundaries are becoming ever more blurred, state and global governance are not just mutually connected and consistent; they also influence and constrain each other. This paper looks into the influence of state governance on global governance in terms of the differences and internal linkages between state and global governance, arguing that enhancing governance capacity is an effective way for China

    汽车设计的进程外文翻译资料

    Procsses of Car Design Developing a vehicle is an arduous process of design and evaluation, trial and error - constant improvement and adaptation. Initial design concepts go through a range of stages to bring them closer to realisation and modelling is key to evaluating a design at each stage. Modelling can take several forms. Traditionally, clay models have been used at various scales to help understand and resolve the form and proportions of a vehicle. To varying degrees, this has been supplemented, sometimes even replaced, by CAD modelling. Whilst clay is still a medium used to evaluate predominantly visual characteristics, CAD systems can additionally help evaluate other factors such as aerodynamics, impact scenarios and other physical considerations Clay Modelling Clay modelling is one of the most established 3D visualisation techniques used in the automotive industry. Clay modelling is one of the oldest a nd most traditional methods used in car design. Stud

    基于php的在线考试系统的设计与实现外文翻译资料

    JOURNAL OF NETWORKS, VOL. 8, NO. 10, OCTOBER 2013 2353 Security Analysis of PHP Encoder Yao Chunlong, Yin Fengjiao, Li Xu, and Fan Fenglong School of Information Science and Engineering, Dalian Polytechnic University, Dalian 110634, China Abstract—As an open source server-side scripts language, PHP is used more and more widely by Web developers now. Protecting PHP code from being plagiarized is also a hot research issue especially with the rapid development of dynamic web industry and peoplersquo;s copyright protection consciousness. Usually the developers use PHP encoders to encrypt the PHP codes before selling them out. There are several different kinds of PHP encoders with different performances. In this paper, we analyze and compare the security level of some well-known encoders. From a fully new aspect, we try to analyze the output of the encoders with the random statistical tests, which is never done b

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