273 research outputs found

    The“Tourist Night Fair”:A Research Project That Based on Cultural and Creative Aspects ——Take LingShow as an example

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    旅游夜市项目是为适应夜间旅游发展与需要而产生的,它的出现不仅仅是对白昼旅游产品的一种延伸,而且是对旅游项目类型的一种补充。作为历史古城的典型代表泉州市,一方面面临着旅游产品结构的转型,另一方面,旅游夜市的缺乏严重阻碍着泉州旅游的发展。因此,将泉州市旅游夜市项目的开发作为论文研究的主题具有重要的现实意义,也具有一定的指导与借鉴意义。 本文基于文化创意的角度,采用文献分析、深度访谈、实证分析的研究方法,对泉州的旅游夜市项目开发问题展开分析。根据不同的业态特点将旅游夜市大致分为流动型、商圈型、观光型、文创型四大类,并对泉州旅游夜市的现状和问题进行分析,认为文创型的旅游夜市能够将文化创意与旅游夜市有...“Tourist Night Fair” project is to adapt to the development and demand of night tourism, which is not just an extension of day tourism ,but also its own market. As a typical representative of the historic city, QuanZhou is facing the transformation of its tourism industry structure. On one hand, money has been invested in creating various establishments and on the other hand there are many problem...学位:旅游管理硕士院系专业:管理学院_旅游管理学号:1782012115118

    Preparation, characterization and properties of LaFeO3 perovskite electrocatalysts for lithium-oxygen battery

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    高能量密度的锂氧电池是极具应用价值的下一代储能装置。目前,它的研究仍处于基础探索阶段。面临的关键问题包括氧气电极缓慢的反应动力学,放电过程中Li2O2等导电性较差的放电产物在电池氧气阴极沉积,导致锂氧电池的电化学极化过大、循环性能不稳定和倍率性能受限等。解决方法之一是构建高效的阴极电催化剂:一方面提高电催化剂的氧还原(ORR)和氧释放(OER)催化反应动力学;另一方面通过优化的结构设计促进电子传输、氧气扩散、电解液浸润和放电产物存储。 本文选择钙钛矿型化合物LaFeO3为主要研究对象。首先制备了LaFeO3纳米粒子(NP-LaFeO3),通过电化学方法研究了该电催化剂的本征催化活性;随后,针...Non-aqueous lithium-oxygen battery is a promising candidate for next generation energy storage due to its high specific capacity. Now its research still stay at fundamental exploration, and one of the most important problems is focused on the sluggish oxygen reaction kinetics. During the discharge process, masses of isolated products which are mainly consisted of lithium peroxide deposit on oxygen...学位:理学硕士院系专业:化学化工学院_物理化学学号:2052014115161

    A Current Harmonics Detection Method Based on Input Observer Theory

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    基于输入观测器理论,对电流谐波在线检测问题进行了研究,得到了一种能够快速准确地提取电流信号中各频率分量的方法。首先,将被测电流信号和其各频率的分量作为状态量,构建线性时变的状态空间模型。然后,设计基于状态空间模型的观测器对未知状态变量进行在线观测,从而实现各频率分量的信息提取。所设计的观测器是时变的,其稳定性和收敛性由Lyapunov定理及Lasalle不变集原理所证明。最后,搭建仿真和实验平台对该方法进行验证,结果表明其具备检测速度快、精度高、动态跟踪性能和抗干扰性好等优点。Based on the input observer theory,the online current harmonics detection method is proposed,which can detect all the frequency components within the current signal accurately and rapidly. Firstly,by setting the state variables as the value and each frequency component of the measured current,a linear time-varying state space model is established. Then,based on the proposed model,a time-varying observer is constructed to estimate the unknown states in order to achieve the extraction of each frequency component. The stability and convergence of the observer are proved by the Lyapunov theorem and the Lasalle invariant set principle. Finally,the simulation and experimental results show that the proposed method has advantages in detection speed,accuracy,dynamic tracking performance,and robustness.中央高校基本科研业务费资助项目(20720150088

    A Case Study on Futures Hedge of Petrochemistry-Related Enterprises

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    进入2008年10月,受金融风暴影响,全球商品期货市场全面暴挫,多家大型公司期货套期保值陷入亏损,如:深南电深陷对赌合约、中国国航和东方航空在燃油期货市场巨额浮亏,加上此前的“中航油”“国储铜”事件,这些企业在期货交易中的失败,暴露出我国期货交易许多深层次的问题,使得一些媒体纷纷把矛头对准了期货市场上的“套期保值”,期货的套期保值功能在一定程度上受到质疑、遮盖、扭曲,引发普通社会大众对期货套期保值产生误解。与国内情况相反,国外却鲜有反对期货套期保值的声浪,期货交易仍保持两位数增长,世界500强企业无一不是套期保值的拥戴者。 随着全球化进程的加快以及期货市场国际联网的出现,国内外大宗商品价格存...When it entered into October 2008, global commodity futures market plunged dramatically owing to financial storm. Many large-scale companies were reported to suffer great losses in futures hedging market, such as Shenzhen Nanshan Power Co.,Ltd. in betting contract, Air China Ltd. and China Eastern Airlines in great floating loss in fuel oil futures market, China Aviation Oil (Singapore) Co.,Ltd. i...学位:工商管理硕士院系专业:管理学院工商管理教育中心(MBA中心)_工商管理硕士(MBA)学号:1792006115163

    生态技术不连续创新路径研究

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    文章从生态技术的内涵出发,结合以往技术不连续创新的研究,探讨生态技术不连续创新的条件及路径,为企业的生态技术创新战略管理提供参考,也为进一步研究生态技术的成长与发展规律奠定基础。2009年国家自然资金资助项目“基于复杂产品供应链的不连续创新能级研究”(7097111);2009年福建省自然科学基金项目“福建省物流安全及应急管理机制研究”(2009J01313

    一株红豆杉内生真菌Xylariales sp.次级代谢产物的研究

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    对一株药用植物南方红豆杉内生真菌Xylariales sp.的次级代谢产物进行了分离纯化、结构鉴定和抗菌活性测定。用反相(RP-18)中压液相柱层析、凝胶(Sephadex LH-20)柱层析和硅胶柱层析等方法从该菌株固体发酵产物的乙酸乙酯相中初步分离得到了4个化合物。运用现代波谱技术结合文献数据对照,鉴定其结构分别是:10,13-Octadecadienoic acid(1),Naphthalenemethanol,1,4,4a,5,6,7,8,8a-octahydro-2,5,5,8a-tetramethyl-(2),4H-Phenaleno[1,2-b]furan-4,6(5H)-dione,8,9-dihydro-3,5,7-trihydroxy-1,8,8,9-tetramethyl-5-(2-oxopropyl)-(3),Rousselianone A'(4)。化合物3与化合物4表现出了针对枯草芽孢杆菌专一的生长抑制活性,四个化合物在浓度为10μg/ml对He La细胞无毒性。宁夏大学自然科学基金(No.ZR1324

    A Research on Internet Marketing Strategy of P2P——The Case of A Co.,Ltd In Marketing

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    随着现代科技信息越来越发达,互联网已经深入到社会经济生活的各个方面,给企业提供了良好的融资平台,也根据不同需求产生了许多创新的互联网金融商业模式。其中P2P的模式由于速度快、费率低、范围广等很多优点受到社会普遍关注,产生了大量的P2P平台,截止到2015年,全国注册的P2P机构数已经达到3598家。面对如此快速的发展速度和竞争环境,如何更好地依托互联网,制定营销策略,开展有效竞争,已经成为很多P2P平台关心的话题。 本文首先从理论基础入手,梳理了互联网营销战略理论和国内外已有理论成果;接着进行了我国P2P互联网营销分析,包括我国P2P互联网营销发展状况、A公司的顾客分析、竞争者分析、公司分析...With modern information technology more and more developed, the Internet has penetrated into all aspects of social and economic life, to the enterprise provides a good platform for financing, also according to the different needs of produced many innovative financial business model on the Internet, including third-party payment platform mode, P2P network model of micro credit, the public and raise...学位:工程管理硕士院系专业:管理学院_工商管理硕士(工商管理硕士)学号:1792011115103

    Selective Harmonic Detection and Compensation Based on Observer Theory

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    近年来电网谐波污染日益严重,谐波的研究和治理受到了国内外的高度重视。为了实现谐波的选次、精确补偿,本文分别对谐波检测和有源电力滤波器(APF)的控制策略两部分内容进行了研究。首先,观测器理论运用在谐波检测领域的研究,国内外学者才刚开始涉及。本文提出了一种基于观测器理论的新型谐波电流检测方法,实现了指定次谐波的快速、精确检测,为谐波检测提供了一种新的思路;其次,工业过程中环境干扰给系统的结构参数带来很大的不确定性,按照理想模型设计的最优控制器在此情况下难以保持最优。本文设计了一种自适应的模型预测控制方法,能够计算出电路参数变化给系统模型带来的偏差,在等效的实际电路模型上实现逆变器的精确电流跟踪;...In recent years, the power network’s harmonic pollution becomes more and more serious. The study and governance of harmonic absorb high attention in the world. In order to realize selective and accurate harmonic compensation, harmonic detection and control strategy of APF are studied in this paper. Firstly, it’s just the beginning for the foreign scholars to involve the research of observer theory...学位:工学硕士院系专业:航空航天学院_电气检测技术及仪器学号:1992013115291

    Ecological supply chain coordination under product innovation

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    以利润最大化为目标的传统技术创新,在促进经济增长的同时,也引起了物种破坏、生态环境恶化等负面效应,使得全球生态环境的承载力接近极限,对人类的生存和发展构成严重威胁,因此,需要转化为以可持续发展观为基础的生态技术创新。此外,生产者责任延伸制度等产品导向型环境管理制度的出现,促使生态产品创新成为生态技术创新的主要发展形式。与此同时,产品创新环境的变化使得单个企业难以独立承担,需要供应链中的企业相互协作。生态供应链管理理念,将环境管理和生态经济/工业理念融入整个供应链管理过程,为生态产品创新提供了良好的组织基础,使得供应链成员企业间紧密协作,低成本、高效率地完成生态产品创新,从产品链源头到末端实施全...Traditional technical innovation with the goal of maximizing economic profit, has promoted economic improvement at the same time as caused some negative effects, such as the decreasing speciecs number and the deterioration of ecological environment. Theses effects have maken the bearing capacity of the gloabal ecological environment close to the ultimate, which threatens greatly the living and the...学位:管理学博士院系专业:管理学院管理科学系_☆管理科学与工程学号:1772007015354
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