237 research outputs found

    Synchronous Fluorescence Spectroscopic Technique for the Simultaneous and Rapid Determination of Polycyclic Aromatic Hydrocarbons in Vegetable Oils and the Preliminary Study of Its Coupling with Surface Plasmon-Coupled Emission

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    同步荧光技术(synchronousfluorescencespectrometry,SFS)是一种基于激发、发射波长仪彼此间保持一定的关系进行同时扫描而获得荧光光谱的一种荧光分析技术。因其具有简化光谱、减少光散射、提高选择性和灵敏度等优势,已逐渐发展成为多组分体系快速检测的有力工具。表面等离子体耦合发射荧光(surfaceplasmon-coupledemission,SPCE)是利用金属近场作用范围内的受激分子与金属表面等离子体之间的耦合作用而建立起来的一种新型的界面增强技术。凭借其定向发射性、偏振性、波长分辨性、能排除远场背景信号干扰等优势,SPCE检测方法的研究和应用得到了迅猛发展。本...Synchronous fluorescence spectrometry (SFS) is a fluorescence analysis technique based on the definite relation between the excitation and emission wavelengths in the process of simultaneous scanning to obtain the fluorescence spectrum. Owing to its advantages of simplified spectrum, less light scattering, high selective, and sensitive, SFS has been gradually developed to a powerful tool for the r...学位:理学硕士院系专业:化学化工学院_分析化学学号:2052013115156

    从形象修复理论看企业危机传播——以修正药业“毒胶囊事件”为例

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    近年来企业危机事件频发,在不同程度上损害了企业形象。企业处理危机时,对形象的修复是不可忽视的重要任务。bEnOIT的形象修复理论是危机传播领域的重要理论之一,本文在对该理论进行梳理的基础上,以近期的修正药业“毒胶囊事件“为案例,分析并深入探讨形象修复理论在企业危机传播中的应用

    The Doctor-Patient Relationship in 《Jian Kang Bao》:The Unequal Doctors and Patients

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    医患关系是人类社会最重要的人际关系之一,一直以来都是社会关注的热点,在我国社会转型和医疗体制改革大背景下也具有特殊意义。媒体是社会真实和舆论的强有力塑造者,其建构的媒介现实会影响受众的主观现实,进而影响客观现实。媒体报道所呈现的医患关系,影响着人们的认知,进而可能影响其在医疗活动过程中的态度和行为,对现实医患关系的形成和发展产生作用。 本研究从媒介建构论出发,以《健康报》为例,采用内容分析法,试图了解我国媒体呈现的医患关系状况、医患关系报道形式特点及消息来源引用情况,并探讨影响媒介建构医患关系的可能因素。 通过研究本文得出以下结论:(1)《健康报》建构的医患双方地位不平等,主要体现在部分报...The doctor-patient relationship is one of the most important relationships in human society, which has always been the hot issue of the society, and it also has a special influence on China's social transformation and medical system reform. The mass media are powerful shapers of the social reality and the public opinion. The “media reality” they construct will have an effect on people’s “objective...学位:文学硕士院系专业:新闻传播学院_传播学学号:3192010115287

    Thinking about Internal Entrepreneurship in State-owned Telecom Company ——A Case Study on Internal Entrepreneurship in GK Substation of China Telecom Xiamen Branch

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    近几年来,随着社会经济的发展和电信企业的重组改革,通信市场竞争愈加激烈化。中国电信作为一家老牌的国有通信企业,更是面临着市场占有率逐渐萎缩、人力资源效率日益低下和企业管理遭遇瓶颈等问题。如何立足于企业实际情况,通过内部创新优化资源配置和提升人力资源使用效益,从而在市场上把握先机是摆在管理层面前的主要挑战。为此,内部创业成为一种可供选择的道路。本文结合企业内部创业相关理论知识,以中国电信厦门分公司作为具体研究对象,分析企业开展内部创业所存在的内外环境因素,并通过组织架构、薪酬激励制度和扩大员工自主权三方面对内部创业机制的推行过程和结果进行深入研究和分析。研究结果显示,通过变革组织框架、完善薪酬激...In recent years, the communication market is becoming more and more competitive along with the development of social economy and the reorganization and reform of telecom enterprises. China Telecom, as a veteran state-owned enterprise, is facing several problems such as shrinking of market share, low efficiency of human resources and bottlenecks of enterprise management. The main challenge for Chin...学位:工商管理硕士院系专业:管理学院_工商管理硕士(工商管理硕士)学号:1792011115081

    Research on Simulation of Activated Sludge Wastewater Treatment Based on LabVIEW & ASM Model

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    污水的活性污泥法生物处理,由于具有处理效果好、运行成本低等特点而成为控制环境污染的一项基本和主要的方法。活性污泥数学模型(ActivatedSludgeModel,ASM)作为污水处理工艺设计、污水处理厂运行管理和污水处理新技术、新工艺研究开发的新工具,已在国外得到成功运用。本文基于LabVIEW平台和活性污泥1号模型开发了活性污泥过程模拟与仿真程序,并利用模型对西宁市某污水处理厂的运行进行了动态模拟研究,模拟结果与实际运行所测定的数据在TKN、NH4-N、COD等数据以及COD各组分数据相吻合,拟合效果较好, 论文所研究主要内容包括: 1、在分析活性污泥法的基础上,归纳了活性污泥效果数学...Activated sludge process, as the biological treatment method of wastewater with superior effect and low operation costs, has become a basic and main method operated in conventional wastewater treatment plants. Being a new effective management tool, the Activated Sludge Model that has been developed by the International Water Association (IWA), is available in the design, performance management, im...学位:工程硕士院系专业:软件学院软件工程系_工程硕士(软件工程)学号:X201223021

    A Study on Competitiveness of China's Automobile Industry Based on Industrial Concentration

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    汽车产业竞争力强的国家,产业集中度一般都较高,这是因为汽车产业有较高的产业关联度,不仅和钢铁、石化、机械、电子、IT等产业密切相关,而且还延伸到服务业、运输业和公路建筑等行业,汽车产业竞争力越强,相关及支持产业发展程度越高,带动经济发展的动力就越大。所以,不论从促进区域经济发展角度,还是企业制定相关发展战略角度,都应重视两者关系的研究。本文选取我国汽车产业集中度及竞争力为研究对象,对我国汽车产业的发展现状,汽车产业集中度水平和竞争力地位进行分析和阐述,并在进行国际比较和经验借鉴的基础上,结合中国特定的国情,提出提升我国汽车产业集中度及竞争力的保障措施。 分析发现,在加入WTO后,我国汽车产业...The stronger the competitive automotive industry, the higher level of development of related and supporting industries, this is because automotive industry have a higher degree of industrial relevance. It is not only related to the iron and steel, petrochemicals, machinery, electronics and other industries, but also extends to services, transport and road building industries; no matter from the p...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:X200515513

    Peak-frequency maximum-correlation minimum-residual tuning algorithm

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    针对弦乐器校音中如何确定音的基频,提出了一种时频域相结合的峰值频率大相关、小残差(PEAk-frEQuEnCy MAXIMuM-COrrElATIOn MInIMuM-rESIduAl,PfMCMr)的弦乐器校音新方法。先对音频进行频谱分析,并利用频谱细化算法计算峰值频率,时域中相关局部最大与残差局部最小相结合,确定峰值频率对应的谐波次数,进而计算出基频。实验结果表明,该算法精度可达0.1 Hz或更高,其精度较高,稳定性良好。The basic issue of tuning stringed instrument is to determine the fundamental frequency of the sound.A novel method of stringed instruments tuning in time- frequency domain, named PFMCMR( Peak- Frequency Maximum- Correlation Minimum- Residual) is presented.Firstly, spectrum zoom algorithm is used to calculate the peak frequency.Secondly, in time domain,local maximum correlation and local minimum residual are combined to determine the harmonic number of peak frequency.Finally,the fundamental frequency is calculated based on peak frequency and corresponding harmonic number.The algorithm accuracy is up to 0.1 Hz or higher.The experimental result show that PFMCMR method is high accuracy and good stability.福建省教育厅A类项目(JA13235); 国家自然科学基金项目(61202013

    基于电子商务的供应链收益分配研究

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    基于电子商务的供应链管理最大的特点在于跨组织的信息传递和共享。只有在收益分配过程中体现信息的价值,才能增加企业信息共享的积极性,真正实现信息技术的作用。文章结合电子商务环境下企业间协作的特点提出影响供应链企业间收益分配的三个因素,即投入成本、风险补偿、信息价值。在综合考虑这三个因素的基础上,实现企业间的收益分配。信息在收益分配中的价值定量计算是目前探讨较少的问题,文章应用模糊综合评价的基本原理和层次分析法的递阶结构建立模糊AHP模型对信息价值进行模糊定量评价,提出了一种思路,希望对以后的研究有所启发。自然科学基金资助项目(No.G021004
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