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英语原文共 9 页, 节能混合太阳能空调系统的建模与优化控制 Q.P. Ha , V. Vakiloroaya Faculty of Engineering and Information Technology, University of Technology, Sydney, PO Box 123 Broadway, NSW 2007, Australia 摘 要 本文介绍了为提高性能和提高能效而开发的新型混合太阳能辅助空调系统的建模和优化控制问题。为了调节通过储水箱的制冷剂蒸汽的质量流量以增加部分负荷下的制冷剂的副冷却过程,我们提出了一个新的排放旁路管路并安装在压缩机之后的直列电磁阀中。同时达到控制空气流量,变速驱动与冷凝器风扇耦合的作用。为了达成控制目的,首先开发了集中参数模型来描述明确的输入 - 输出关系中的系统动力学;然后,对系统的多变量控制采用线性最优控制方案。该系统已经完全检测其在不同运行条件下的性能。然后通过广泛的实验测试验证系
英语原文共 9 页, 水在无定形聚乙烯醇缩甲醛中的影响:分子动力学模拟的见解 Qiang Yin amp; Lin Zhang amp; Bo Jiang amp; Qinjian Yin amp; Kai Du 摘要在这项研究中,进行分子动力学模拟研究水对聚乙烯醇缩甲醛的影响。研究了添加不同浓度的水(0,0.23,0.47,0.94,1.40,1.86,2.76,3.65和4.52wt%)对聚乙烯醇缩醛,聚乙烯醇和聚乙酸乙烯酯的共聚物的影响。模拟结果清楚地表明,聚合物链的回转半径减小,而内聚能密度随着水分子的加入而增加。扩散系数最初降低,然后随着水浓度的增加而单调增加,对于自由体积分数观察到相同的趋势。结果提供了具有不同水含量的聚乙烯醇缩甲醛的分子结构和物理性质的见解。 关键词:聚乙烯醇缩甲醛 水 分子动力学模拟 介绍 聚乙烯醇缩甲醛(PVF)具有许多所需的性质,并广泛用于阿尔法光谱测定,电
英语原文共 11 页, C/ZrC, C/ZrC–SiC 和 C/SiC填充高分子复合材料热分解行为、机理及过程 闫春雷 刘荣军 曹英斌 张昌瑞 张德科 国防科技大学先进陶瓷纤维与复合材料科学与技术实验室,长沙410073 摘要 能够承受超高温度和烧蚀条件的材料的设计和制造正在超音速汽车领域产生越来越浓厚的兴趣,一个潜在的解决方案是以碳纤维为增强体,以含有耐超高温度陶瓷的材料为基体的复合材料。在本次研究中,制备出以SiC含量为变量的C/ZrC, C/ZrC–SiC 和 C/SiC高分子复合材料并通过其热分解过程考察SiC基复合材料的耐超高温性能。它们的热分解行为、机理的对比研究用氧乙炔炬测试完成。此外,已发展出新的自愈理论来了解SiC复合材料的烧蚀行为。 关键词 陶瓷基复合材料 SEM 高温分解 氧化 1、介绍 高速飞行器的外部热防护系
英语原文共 6 页, 磁性与磁性材料杂志401(2016)656 - 661 磁性与磁性材料杂志 首页:www.elsevier.com /杂志/ jmmm locate 三维过渡金属掺杂单层SiC薄膜的电子和磁特性 Masoud Bezi Javan N 摘要 从理论上研究了三维掺杂单层SiC薄膜的电子和磁学性质过渡金属(TM)原子。结构特性,诱导应变,电子和磁学性质研究了以Tm原子取代SiC片的碳或硅。我们发现将诱导应变引入到取代Tm原子的SiC薄片晶格结构中不同的Si(TMSI)和C(TMC)网站为TMSI结构具有较低的应变值。还TM原子可以在与TMSi的结合能不同值的SiC片的晶格取代,TMC结构为TMSI结构具有更高的结合能值。依赖于结构特性,TM掺杂SiC片显示磁性或非磁性性能。我们发现,一些结构如MnSi、CuSi和COC的配置有明显的总磁矩约3乙位。 2015 Elsevier公司保留所有权利 1. 介绍
Customer relationship management in social and semantic web environments Aacute;ngel Garciacute;a-Crespo, Universidad Carlos III de Madrid, Spain Ricardo Colomo-Palacios, Universidad Carlos III de Madrid, Spain Juan Miguel Goacute;mez-Berbiacute;s, Universidad Carlos III de Madrid, Spain Fernando Paniagua Martiacute;n Universidad Carlos III de Madrid, Spain ABSTRACT The growing influence of the Internet in current 21st-century everyday life has implied a paradigm shift in terms of relationships between customers and companies. New interaction means in the Web 1.0 have undergone a dramatic change in quantity and quality with the advent of the so-called Web 2.0, the Social Web. The upcoming Web 3.0, the Semantic Web will also impact tremendously in how companies understand Customer Relationship Management (CRM). In this dynamic environment, the present work presents a combination of both Social and Semantic Web Technologies and their application in the part
CREATION AND IMPLEMENTATION OF THE INNOVATION STRATEGY IN THE ENTERPRISE Viliam Lendel1, Michal Varmus2 Introduction Innovations are currently fundamental prerequisite of competitiveness (Striscaron;scaron; et al., 2009). The economic crisis forced most businesses to savings in all business areas. On the other hand, it should be noted that the economic crisis for will gone and come again revival the economy and re-distribution of markets. Successful companies will be the ones that will have implemented an innovative strategy, will invest in research, development and innovate. Innovation is regarded as a key business process; it means that companies are trying through them to achieve a competitive advantage. The basic precondition for the creation and use of innovation in the enterprise is well formulated and implemented innovative strategy. Innovation is widely recognized as an essential enabler of competitiveness for any company that aims to remain competitive and expan
英语原文共 11 页, 生育率下降,家庭的性别构成,以及对老年供养的期望 Keera Allendorf 摘要 非西方国家最近的生育率下降可能潜在地改变性别制度。这种转变的一个途径是创造出只有一种性别的孩子的家庭。这样的家庭,尤其是只有女儿的家庭,可能会促进儿子和女儿之间更大的对称。本文探索这些变化是否会影响老年供养的性别期望。与父系家族制度保持一致的是,在印度,老年供养通常是由儿子,而不是女儿提供的。使用从2005年印度人类发展的调查数据,我发现绝大多数生育了儿子的女性希望老年供养由一个儿子提供。使用数据从2005年印度人类发展的调查,我发现儿子绝大多数女性希望年老的支持一个儿子。相比之下,只有女儿的女性在很大程度上希望得到来自女儿或其他孩子的支持。这些发现表明,生育率下降可能更
英语原文共 12 页, The Rise in Old-Age Longevity and the Market for Long-Term Care 老年寿命和长期照顾市场的上升 DARIUS LAKDAWALLA AND TOMAS PHILIPSON In many countries around the world, the demographic transition into reduced fertility and mortality has forced the private and public sectors to grapple with the care of rapidly aging populations. Since 1960, the share of the U.S. population above 65 years of age has grown substantially, from about 9 percent to 14 percent. Other developed countries have experienced even more rapid growth. For example, in many European nations, the elderly population accounts for nearly one-fifth of the total population, and growth in this share has been larger than in the United States over the past few decades. As the elderly population has grown,the share of GDP devoted to long-term care for the elderly has grown as well. This rapid growth has stimulated interest in the study of how private markets f
英语原文共 19 页, 外文翻译 During the last decade, observers have noted that markets are giving way to networks, and alternative modes of acquisition and consumption are emerging beside ownership. While property continues to exist, it is less likely to be exchanged in the market (Rifkin 2000). Instead of buying and owning things, consumers want access to goods and prefer to pay for the experience of temporarily accessing them. Ownership is no longer the ultimate expression of consumer desire (Chen 2009; Marx 2011). Indeed, we have seen a proliferation of consumption models in which access is enabled through sharing or pooling of resources/products services redefined through technology and peer communities(Belk 2010; Botsman and Rogers 2010; Gansky 2010; Giesler 2006). 在过去的十年中,观察家们注意到,市场正在给网络让路,除所有权之外,替代模式的收购和消费正在出现。虽则其属性继续存在,它是
英语原文共 17 页, N. Venkatraman, John Prescott Environment Strategy Co-alignment: An Empirical Test of Its Performance Implication Strategic Management Journal, Vol. 11, 1-23 (1990)环境战略匹配机制:绩效含义的实证检验译者:工商1301班 韩林昊 The positive performance impact of a coalignment between the environment and strategy of a business is an important theoretical proposition in strategic management. In spite of its importance and intuitive appeal, the extent of empirical support is equivocal and riddled with problems of conceptualizing and testing for coalignment. This paper evaluates alternate approaches to testing such a proposition and argues in favor of specifying coalignnent as #39;profile deviation#39;, which states that coalignment is the degree to which strategic resource deployments adhere to an #39;ideal profilersquo; for a given environment. Subsequently, this proposition is tested across two time periods,
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