483 research outputs found

    Research on the Formation Mechanism and Discourse of Network Collective Action —— a Case Study of "D8’s Expedition to Facebook"

    Get PDF
    随着互联网技术的快速发展,集体行动逐渐与网络结合,网络集体行动由此生成且形式日趋多样化。西方学界将网络集体行动分为“线上”和“离线”两种类型,西方以“离线”行动居多,中国则以线上的集体表达为主要形式。 作为2016年初重要的网络舆情事件,“帝吧出征FB”无疑是极具影响力的网络集体行动代表。但仔细考察就会发现,这样一种行为的出现并非偶然,不仅可以从帝吧之前的数次民族主义“爆吧”行动中找寻到源头,还能够从两岸关系及组织动员等角度找到其成因。 本研究首先以斯梅尔塞的“价值累加理论”作为基础框架,对“帝吧出征FB”的形成机制进行考量。其次,将焦点放在“出征”行动发生之后,通过对蔡英文的脸书评论进行...With the rapid development of Internet technology, the collective action is gradually combined with Internet therefore network collective action is generated and becoming more and more diversified. Western researchers divide network collective actions into two types: "online" and "offline". People in western countries take more "offline" actions while Chinese tend to take “online” actions during c...学位:新闻与传播硕士院系专业:新闻传播学院_新闻与传播硕士学号:3062014115305

    Optical tracking of bacterial immune phagocytosis based on acid-responsive probes

    Get PDF
    细菌感染与免疫杀死代表着病原体与宿主相互关系中很重要的两个方面,研究细菌感染与免疫反应的关系,有助于对病原体致病机理的理解。吞噬作用作为生命体防御感染的一道防线,是最古老的,也是最基本的防卫机制之一。吞噬细胞通过吞噬感染的细菌形成吞噬体,随后吞噬体逐渐与溶酶体融合形成吞噬溶酶体。溶酶体是细胞的消化器官,其内部pH为4~5,含有各种水解酶。细菌在吞噬溶酶体内被酸性pH及水解酶的协同作用降解杀死。 细胞吞噬作用异常则会导致机体的免疫功能缺陷,从而引发一系列的疾病。能够实时追踪细菌吞噬作用的过程对于研究病原微生物的致病机理具有重要意义。目前研究中常利用荧光素标记的乳胶粒子、绿色荧光蛋白(GFP)转...Bacterial infection and immunological eradiation are two key aspets of hosts-pathogen interplay. A precise understanding of host-pathogen interaction is critical for treatment variety of infectious diseases. Phagocytosis is an effective anti-bacteria defense. Phagocytes engulf bacteria to the phagosomes, which then fuse with lysosomes to form phagolysosomes. Lysosomes are the digestive organelle o...学位:理学硕士院系专业:化学化工学院_化学生物学学号:2052013115167

    Dynamic Economic Dispatch of Wind Power Integrated System With Fully Developed Supply Responses of Thermal Units

    Get PDF
    已有文献分析了传统的离散时间调度模型,并指出这类调度模型存在备用容量上、下限不可达的问题。该文进一步指出这类调度模型中存在备用容量上、下限约束过; 于严格、限制机组的深度变负荷能力的不足。以连续时间调度模型为基础,建立了充分发挥机组深度变负荷能力的风火电联合随机调度模型。仿真实验结果表明,这; 种含风电场的电力系统动态经济调度模型能有效应对风电出力的随机波动性特征,充分发挥机组深度变负荷能力,在保证系统可靠性的前提下能节省更多的成本。Some researchers analyzed the traditional discrete-time scheduling; model, and pointed out that the upper and lower bounds of spinning; reserve offered by thermal units are unreachable. We further find that; the upper and lower bounds of spinning reserve modeled in the; discrete-time scheduling model are too strict in some situation. In; order to solve this problem, we analyzed the thermal units supply; responses based on the continuous time scheduling. And then a stochastic; scheduling model of wind & thermal power joint operation was established; in consideration of the thermal units supply responses. Simulation; results show the new model can effectively cope with random fluctuation; characteristics of wind power output, take full advantage of the supply; responses of thermal units, and save more cost while guaranteeing the; system reliability.国家自然科学基金项目; 福建省自然科学基金项

    金融危机下“金砖四国”何去何从

    Get PDF
    本文在对此次金融危机做出浅析后,主要针对具有代表性的新兴经济体巴西、俄罗斯、印度和中国,提出了应对危机的相关策略。针对此策略,本文基于四国国情进行了可行性论证,基于博弈论知识建立模型并进行了可操作性论证,最后给出了此策略的当前现实意义。以期有助于包括我国在内的以上四国提前摆脱危机

    Indepth Study to the Time Complexity of Linear Time Selection Algorithm

    Get PDF
    算法研究是计算机科学的核心领域之一。文中针对元素选择问题及解此问题的线性时间选择算法进行了深入研究,详细分析并论证了期望情况下与最坏情况下线性时间选择算法的时间复杂度,并对拟中位数元素选择问题进行了深层次的拓展,通过计算比较求出了线性时间下的最小复杂度因子。以期有助于该算法在相关领域的应用。The algorithm study is one of core fields in computer science.The paper makes a further study of element selection problem and the linear time selection algorithm which is used to solve the problem above.Moreover, it analyzes the timecomplexity of linear time selection algorithm respectively in the expected and worst circumstance in detail and simultaneously gives it a strict proof .At last,The paper extends the method of analogical median deeply in solving the element selectionproblem.After caculation and comparison,the smallest complexity factor with linear time has been found out.Hope it be helpful to the application in the relevant fields

    Research and Design of Configuration Software System Based on SQLITE

    Get PDF
    摘要 随着工业生产的发展,工业生产过程日趋复杂化,工业控制系统的开发成为工业生产中一个非常重要的部分。但传统的工业控制系统存在着软件水平不高、质量不好的问题,因此优秀的开发工具在工业控制系统软件的开发过程中是必不可少的。组态软件的出现,使得用户可以通过工业控制组态软件,自行经过组态过程构成其所需要的工业控制系统软件,从而改变了工业控制系统软件的开发方式。 另一方面,工业生产过程中的监控越来越细致,需要采集的数据越来越多,组态软件对实时数据库的要求不断提高。工业控制系统中的实时数据库应具有高实时性、高数据吞吐量、高可靠性等特点,才能够保证工业控制系统的长期稳定运行。同时,XML的发展应用使得...Abstract With the development of Industry, the industrial production is becoming more and more complex; the design of industrial control system is playing an important part in usual industrial production. But, there exits problems such as low software level and poor quality in traditional industrial control system, that an excellent development tools is indispensable during the development of ind...学位:工学硕士院系专业:信息科学与技术学院计算机科学系_计算机软件与理论学号:2005130231

    The effects of matrine on the proliferation and apoptosis of human esophageal carcinoma Eca-109 cell line

    Get PDF
    食管癌(carcinomaoftheesophagus)是一种常见的消化系统恶性肿瘤,它严重威胁着人类的健康。全世界每年有20余万人死于食管癌,我国每年死亡达15万人,占据世界食管癌死亡人数的大部分。在我国,食管癌发病率男性居各种恶性肿瘤第四位,女性为第七位,而死亡率男女均居第四位。食管癌的发病率有明显的地区差异,高发地区食管癌的发病率可高达150/10万以上,低发地区则只有3/10万左右。国外以中亚、非洲、法国北部和中南美洲为高发区,我国以太行山地区、秦岭东部地区、大别山区、四川北部地区、闽南和广东潮汕地区、苏北地区为高发区。其中河南林县,食管癌死亡率男性为161.33/10万,女性为102...Carcinoma of the esophagus is one of common malignant tumors from human digestive system, and it is a serious threat to human health. Every year, more than 20 million people died of esophageal cancer, in China 15 million, occupy the majority of the world deaths of esophageal cancer. In China, the incidence rate of esophageal cancer in a variety of malignant tumors, male fourth place, women seventh...学位:医学硕士院系专业:医学院临床医学系_外科学学号:2452009115296

    IDC Business Development Strategy Research of China Telecom Beijing Corporation

    Get PDF
    随着信息技术和互联网行业的飞速发展,互联网数据中心(简称“IDC”)业务作为一种提供互联网资源及网络系统管理的运营企业应运而生。北京电信自2003年开始发展IDC业务,依靠丰富的机房和网络资源、专业的服务团队和先进的机房基础设施条件吸引了大批国内外知名的互联网、金融及政府类客户,业务收入逐年攀升,整体发展情况良好。本文首先介绍了IDC业务的相关概念、发展特点等,然后又介绍了论文研究过程中所涉及到的战略管理及其方法的理论知识。从中国IDC业务的整体发展水平、北京IDC业务规模和竞争情况等方面对北京电信IDC业务所处的外部环境进行分析;进而又从北京电信的业务规模、业务收入情况、服务种类和客户情况等...With the rapid development of IT industry, Internet Data Centre (IDC) arises as one kind of Operation Enterprises which provide internet resources and network system management services. Beijing Telecom developed IDC business since 2003. Based on its abundant hardware and network resources, professional service team and advanced infrastructures, Beijing Telecom attracted large numbers of well-know...学位:工商管理硕士院系专业:管理学院高级经理教育中心(EMBA项目)_高级管理人员工商管理硕士(EMBA)学号:X200715620
    corecore