Recombinant Expression of Azoreductase and Gene-knockout of mtrA on Shewanella oneidensis MR-1

希瓦氏菌在自然界中广泛分布，因其出色的异化金属还原能力与染料褪色能力而备受研究者关注。然而希瓦氏菌在基因水平的研究尚无较大进展，现阶段缺乏遗传操作工具，包含合适的质粒以及高效的基因敲除方式，使得希瓦氏菌在基因工程的研究上受到了极大的限制。 本研究探究了两个大肠杆菌与希瓦氏菌（E.coli-Shewanella）穿梭质粒pETSXM2与pSB1C3-repB，其在placI启动子驱动下具表达能力，上述质粒于大肠杆菌BL21(DE3)以及希瓦氏菌MR-1中均能表达外源蛋白。重组构建于质粒pETSXM2以及pSB1C3-repB的的外源基因为偶氮还原酶基因azoRI，其中在pSB1C3-repB...Due to the widely distribution of Shewanella and its outstanding performance of ability in dissimilatory metal reduction and dye decoloration, Shewanella has been one of the popular research nowadays. However, the genetic research of genue Shewanella is still a mystery. The lack of genetic tool, such as vector and high efficient knock-out system is the limitation on molecular studies of Shewanella...学位：工程硕士院系专业：化学化工学院_工程硕士(化学工程)学号：2062014115145

Impact of Cross Listing on Corporate Social Responsibility——Empirical Evidence from Listed Firms In A Stock Market

随着市场经济的迅猛发展和国际竞争格局的不断升级，企业经营对资金规模的需求逐渐加大。与此同时，经济全球化和全球资金流通限制放开的宏观背景为企业拓宽融资渠道、扩大市场占有率以及提高国际竞争力提供了良好的外部机会，越来越多不满足于大陆市场融资的公司选择到香港市场甚至海外市场交叉上市，以期综合利用境内外市场的优势提升企业价值。关于交叉上市行为对企业带来的影响，国内外已有学者分别从降低资本成本、提升企业绩效、提高公司治理水平、加强企业信息披露质量等角度入手，论述境外市场更加完善的法律制度环境及市场监管环境给企业带来的各方面影响，但目前研究其对企业社会因素影响的文章有限。而近来随着需求、环境、资源、公众声...With rapid development of market economy and continuous upgrading of international competition, business demand for capital scale gradually increases. At the same time, the macro background of economic globalization and liberalization of global capital flow restrictions provide good external opportunities for companies to broaden financing channels, expand market share and improve international co...学位：管理学硕士院系专业：管理学院_会计学学号：1752014115113

The Research of Chinese Nominal Metaphor Computation

隐喻作为语言中的一种普遍现象,不仅是一个语言学、修辞学问题，也是人类普遍使用的一种认知方式。隐喻帮助我们构建人类的思维和概念系统，从这个意义上可以说，隐喻是深刻认识世界的有效手段与便捷桥梁。因此，研究隐喻的理解方法是自然语言自动理解的研究中不能回避的问题。 汉语是世界上最古老的语言之一，汉语隐喻有其不同于西方语言的特点。为了使汉语隐喻的计算方法在国内得到进一步发展，本文针对汉语隐喻，试图在国内外已有研究成果的基础上，根据隐喻认知规律，分别采用基于逻辑和基于语料库的隐喻计算方法对其进行深入的研究。由于汉语隐喻种类繁多，本文只能针对名词性隐喻进行探讨，其余暂不涉及。 在基于逻辑的隐喻计算方面，...Metaphor which is a kind of ubiquitous phenomenon in natural language, is not only a philological and rhetoric problem, but also a kind of cognitive nature of human being. Metaphor helps us to construct our mind and concept system. Metaphor computation has attracted more and more attention because metaphor, to some extent, is the focus of mind and language mechanism. However, it encounters probl...学位：理学博士院系专业：信息科学与技术学院计算机科学系_基础数学学号：B20032300

The Discussion of Enforcement of Contract

美国学者伯纳德•施瓦茨曾说过，“法律是随着它所调整的那个社会运动的主流向前发展。每一个社会都有它自己的必然会通过法律秩序力图实现的目标反映出来的价值观念”。在这个复杂社会中，社会运作模式需要多元手段的整合，单一的治理模式显得已不合时宜。契约理念从私法扩展到公法，强制手段从公法延伸到私法便是对社会多元性治理需要的回应。随着古典契约自由理念的失落、公私法互动、融合趋势的加强，现代社会中，契约不再具有“纯粹性”，契约领域呈现出“公私互治”的复杂形态。传统私法上的契约被强制，强制缔约制度便是例证；公法领域也广泛采用契约治理模式，出现了诸如行政契约、辩诉交易这样为代表的典型公法契约。契约概念...American scholar Bernard Schwartz has said that the law continuous to advance with the development of mainstream social movement. Every society will have a value to be reflected by its own legal system. In this complex society, the social governance requires the integration of diverse means. Simply relying on a single rule is outdated. In response to the needs of social governance diversity, the ...学位：法律硕士院系专业：法学院法律系_法律硕士(JM)学号：1302009115034

新一代智能语言VISUALPROLOG

VISuAlPrOlOg是新一代的智能语言；它既具有传统PrOlOg的推理能力，又具备友好的图形用户界面，它的应用已不仅仅局限于人工智能的研究范围；它将作为新一代计算机语言；和其他流行的编程语言一争高下，成为实际应用的选择。基于止匕本文将介绍VISuAlPrOlOg的特点和如何用它开发实际应用

基于合作机制的汉语名词性隐喻理解方法

从全新的合作角度来研究有效进行名词性隐喻理解的方法, 提出本体和喻体的三种合作方式。基于互 动论的思想, 采用知识库与语料库相结合的方式来抽取隐喻句的表述义。实验结果表明, 提出的基于合作机制 的隐喻表述义提取算法是有效的。国家自然科学基金资助项目(60376080

Metaphor Comprehension Method Based on Relevance Constraints

隐喻理解已成为语言学、认知学、计算机科学等研究的重要课题,也是自然语言处理中不可避免的任务.提出一种基于相关性约束的隐喻理解方法,利用隐含的相关; 角度计算目标域和源域的相关程度.首先,基于词、词的主题及语篇的主题扩展出多层次的语义表示;然后,利用上下文信息的相关关系,构建多层次的相关性模型; ,模型通过多种角度的相关关系将跨层次的语义信息关联起来;接着,采用random; walk的方法,通过迭代计算获得隐含角度的相关关系;最后,选择与目标域具有最大相关度的属性作为隐喻理解的结果.将模型应用到隐喻理解任务中,实验结; 果表明,该方法能够有效地实现隐喻自动理解.Metaphor comprehension has become an important issue of linguistics,; cognitive science and computer science. It is also an unavoidable task; of natural language processing. This paper presents a novel metaphor; comprehension method to make full use of global information based on; relevance constraints. The method uses implied perspective to calculate; the relevance degree between the target and source domains. First,; multi-level semantic representation is obtained based on the semantic; representation of word, topic features of word and topic features of; discourse. Next, the degree of relevance relations is calculated and the; relevance model is generated. Additionally, relevance relations is used; to connect cross-level nodes from different perspectives. Then, using; random walk algorithm, the relevance relations are acquired from latent; perspectives through iterative computations. Finally, the target; attribute that has the maximum relevance degree with the target domain; is selected as the comprehension result. Experimental results show that; the presented method is effective in metaphor comprehension.国家自然科学基

Approach to Recognizing Chinese Nominal Metaphor Based on Online-Encyclopedia

针对现有隐喻计算知识库的广度和深度不足问题,提出了引入了网络百科资源作为隐喻识别的世界知识库的方法.利用信息检索技术,从概念对应的百科页面中获取概念的背景世界知识,计算两个概念的世界知识的重合程度,作为判断它们是否属于同一个概念域的依据,进行隐喻的识别.实验结果表明在使用百度百科作为世界知识库时,隐喻/常规表达的识别正确率达到81.06%,算法的有效性得到证明.Aim at the low coverage of current hand-coded knowledge base used in the metaphor recognition,a Chinese nominal metaphor recognition method based on exploiting the online encyclopedia resource is proposed.A noun is represented as a page in the encyclopedia.Capture the world knowledge from the page of encyclopedia,calculates the relatedness between the pages of the two nouns in the nominal reference by applying information retrieval methods.The relatedness determines the reference is metaphorical or not.The experimental results shows that the accuracy of metaphorical/normal references recognition can reach 81.06% by using BaiduBaike.It supports the validity,efficiency of this method.国家自然科学基金(61075058

隐喻计算研究进展

作为自然语言处理中的普遍现象,隐喻若不得到解决,将成为制约自然语言处理和机器翻译的瓶颈问题.结合相关的隐喻理论基础,从隐喻识别和隐喻解释这两个隐喻计算的子任务出发,介绍了现有的隐喻计算模型以及隐喻语料资源,并对这些隐喻模型的优缺点和适用范围进行了比较.国家自然科学基金(61075058

基于动态分类的隐喻识别方法

隐喻计算是自然语言处理领域中的重要问题.尝试以差异性计算为基础,结合语言、心理和认知的角度对英语隐喻识别进行深入分析和探索对人类而言,隐喻识别是一个动态分类的过程,动态分类是从多个角度来度量事物之间的差异性.研究了如何模仿人类来获取概念的特征、选择分类角度、在特定分类角度下计算差异性,并进行了英语名词性隐喻识别的实验.该方法对隐喻/常规表达识别的准确率达到85.4%,实验结果表明,该方法是有效的.国家自然科学基金(61075058)~