An Empirical Study of Customer Loyalty Model in A Third-party-operated Electronic Market Context

培育和维护忠诚的网上顾客群体已经成为第三方电子市场运营商制胜的重要策略，同时忠诚的顾客也成为了服务运营商最重要的资产。本文主要是研究在第三方电子市场这样一个特定情境中，哪些因素会影响以及如何影响顾客对第三方电子市场这个独立中介的忠诚，同时第三方电子市场的运营商又应该制定与实施怎样的运营策略来提升顾客对自身的忠诚。本文在吸收前人研究成果的基础上，以实证研究和案例分析相结合的方法，构建和验证第三方电子市场的顾客忠诚驱动模型，对电子市场的顾客忠诚机制进行探索和研究。 论文的主要研究工作包括以下几个方面：1.通过对现有理论文献的回顾，总结学术界对电子市场、顾客忠诚等方面的研究成果，提出第三方电子市场...Building and Keeping customer loyalty has become an important competitive strategy for a successful third-party-operated e-Market, and loyal customers have also been their most important assets. This paper aims to focus on what factors might affect customer loyalty to a third-party-operated e-Market which plays as an independent role between buyers and sellers, and then how they work and what poli...学位：管理学博士院系专业：管理学院管理科学系_技术经济及管理学号：1532005140299

纳米材料的研究进展

总结了近几年来纳米材料的研究进展，着重从纳米材料的制备、微观结构、力学及热力学性能的研究情况作了一个概述，总结了有关纳米材料的几个研究热点以及分子动力学计算机模拟在纳米材料研究中的应用。最后并指出出几个急待研究的工作

基于超体素聚类的三维点云轮廓特征提取

三维点云的轮廓结构作为大规模三维场景的一种表征信息,能够保留其主要信息且大幅度压缩数据量,因此,对于大规模三维场景的表达具有重要意义.本文提出一种基于超体素聚类分析的大规模三维点云轮廓特征提取算法.首先,对三维点云进行超体素聚类分析,生成分割块;其次,结合超体素块的法向量,利用α-shape提取每个三维超体素块的边缘点;最后,利用相互最近邻法剔除相邻且共面超体素块间的边缘点,保留相邻但不共面超体素块间的边缘点并结合无邻接的超体素块边缘点,即轮廓边缘点.实验表明,本文所提算法实现了三维轮廓特征的提取,且在保留主要轮廓信息的同时大幅度压缩了点云的数据量.福建省中青年教师教育科研项目(JA15461,JA14292

工业建筑可调式支座高层钢结构优化设计

本文结合国家“八五”重点工程之生命线工程-淮南矿务局谢桥煤矿副井领井塔高层钢结构工程设计，着重分析了未融冻土特殊地基拟建建筑物所遇到突出问题-地基沉降问题，通过概念设计，多方案优化比较，在支座选型上突破了常规，选用滑动支座（用于安装及支座沉降调节阶段）和铰接支座（用于正常使用阶段）两种结构计算模型，进行结构分析。采用与计算模型相适应的特殊的结构构造措施，从而确定合理的结构方案，进行合理的结构设计。本文优化重点在于结构造型。理论与实践同时证明，设计是成功的，经验可供设计同类建筑借鉴

浅论我国大黄鱼产业转型升级之对策

经过30多年的研究与发展,我国大黄鱼产业已进入转型升级阶段。本文就加快大黄鱼原良种体系建设、规范养殖网箱布局和优化网箱结构、提高养殖经济效益与产品质量、加快全价人工配合饲料研发与推广应用、实施鱼病综合防控技术、提高产品加工率、实施品牌战略、进一步发挥行业协会作用、发掘大黄鱼文化等方面,论述了我国大黄鱼产业转型升级的对策。福建省科技重大专项专题(2016NZ0001-4);;中央引导地方科技发展专项(2017L3019);;现代农业产业技术体系专项资金(CARS-47);;福建省自然科学基金(2015J06019

Development, fabrication, and applications of biomedical electrodes

生物医用电极作为一种能够有效地将生物体电化学活动产生的离子电位转换成测量系统电子电位的传感器,广泛应用于现代临床检测和生物医学测量.近年来,由于生物医用电极在心电图ECg、脑电图EEg、肌电图EMg以及电阻抗成像EIT等领域的迫切应用需求,新型生物医用电极结构及其高效低成本的制造方法不断涌现,生物医用电极制造技术获得飞速发展.本文通过对现有的生物医用体表电极进行了分类(包括传统银/氯化银电极、微针电极、纺织柔性电极、柔性衬底电极、泡沫结构电极、绝缘干电极),分别对其制造工艺过程与使用方法进行了综述,并对其已有或潜在的应用领域进行详细分析,最后对生物医用电极的应用前景进行了展望.Biomedical electrodes convert the ion potential generated by electrochemical activities into an electronic potential that can be measured by instrumentation systems; they are widely used as sensors in modern clinical detection and biomedical measurement.In recent years, with increasing applications in the fields of electrocardiography(ECG), electroencephalography(EEG), electromyography(EMG), and electrical impedance tomography(EIT), a great number of new biomedical electrodes with novel structural design and new material selection have been explored and developed; low-cost fabrication methods are also being intensively studied.In this paper, biomedical electrodes are classified into five types, including traditional silver/silver chloride electrodes, microneedle electrodes, flexible textile electrodes, foam electrodes, and insulated dry electrodes.The conversion mechanisms from ion potential to electronic potential of different biomedical electrodes described in the prior literature are firstly introduced, and then the latest research results concerning the fabrication processes for different biomedical electrodes, and the methods of using them, are reviewed.The advantages and disadvantages of each type of electrode for practical applications are discussed, based on the published literature.A general description of the current applications of biomedical electrodes in ECG, EEG, EMG, and EIT is presented.Typical results from researchers in various countries are reviewed to further introduce the detailed application of different biomedical electrodes.Emerging application fields for biomedical electrodes, such as electrooculography, electrogastrography, and the study of the nervous system, are also presented.Finally, the development and application prospects of biomedical electrodes are described briefly.With the rapid development of microelectronics, micro-nano manufacturing and signal processing technology, the related manufacturing technologies and signal processing methods for biomedical electrodes have achieved great progress; in particular, a much deeper understanding about the contact mechanism with human tissue and skin has been obtained.We believe that many new biomedical electrodes will be developed in the next few years to greatly improve the detection level of bioelectric information.国家自然科学基金(51475397); 厦门大学中央高校基本科研业务费(2013121017)资

Effects of electropuncture of acupoints on the foot Yangming stomach meridian on metabolic profiling of gastric mucosa in gastric ulcer rats

目的:采用核磁共振氢谱技术(1H; NMR)研究电针胃经穴对应激性胃溃疡大鼠胃黏膜组织代谢物谱的表达。方法:40只SD大鼠随机分为正常组、模型组、胃经组和胆经组。利用束缚-冷应激法; 制备应激性胃溃疡模型大鼠,光镜下观察大鼠胃黏膜组织病理形态学的变化,采用1H NMR技术获取胃黏膜组织1H; NMR谱,并利用模式识别方法分析各组间的代谢物谱的差异。结果:与正常组比较,模型组大鼠胃黏膜损伤和胃黏膜组织代谢轮廓差异明显,胃黏膜组织乙酸、肌; 醇、磷酸胆碱、谷氨酸、甘氨酸、乙醇胺、赖氨酸、3-羟基丁酸、缬氨酸、异亮氨酸、牛磺酸、亮氨酸和甘露醇含量上升(P<0.05),乳酸、甲硫氨酸和天; 冬氨酸含量下降(P<0.05);与模型组比较,胃经组和胆经组大鼠胃黏膜得到明显修复,胃经组大鼠胃黏膜组织代谢轮廓更接近正常大鼠,胃黏膜组织甲硫氨; 酸、天冬氨酸含量上升(P<0.05),乙酸、肌醇、磷酸胆碱、谷氨酸、甘氨酸、赖氨酸、异亮氨酸、牛磺酸、乳酸、亮氨酸和甘露醇含量下降(P<0.05; );胆经组大鼠胃黏膜组织3-羟基丁酸、甲硫氨酸含量上升(P<0.05),肌醇、磷酸胆碱、谷氨酸、乙醇胺、异亮氨酸、乳酸、亮氨酸和甘露醇含量下降(; P<0.05)。结论:电针胃经穴可调节胃溃疡大鼠胃黏膜组织特异代谢物的表达,促进胃黏膜损伤的修复。Objective: To research the effects of electropuncture of acupoints on; the foot Yangming stomach meridian on metabolic profiling of gastric; mucosa in rats of gastric ulcer induced by stressusing the 1H nuclear; magnetic resonance (1H NMR). Methods: Forty SD rats were randomly; divided into the control group, the model group, the stomach meridian; group and the gallbladder meridian group. The rat model of gastric ulcer; was induced by the restrained plus cold stress. The pathological changes; in the rat gastric mucosa tissue were observed by light microscope. The; 1H NMR spectroscopy was determined with the 1H NMR technique. And,; meanwhile the differences in the metabolic profiling were identified; with the pattern recognition method. Results: Compared to normal group,; the gastric mucosa damage and gastric mucosa metabolic profiling are; obvious, the concentration of acetic acid, choline, inositol phosphate,; glutamic acid, glycine, ethanolamine, lysine, 3-hydroxy butyric acid,; valine, isoleucine, taurine, leucine and mannitol increase and the; concentration of lactic acid, methionine and aspartic acid decrease in; model group rats (P<0.05). Compared to model group, the gastric mucosa; damage have been recovered in stomach meridian group and gallbladder; meridian group, the metabolic profiling of gastric mocusa tissue in; stomach meridian group are similar to the normal group. The; concentration of methionine, aspartic acid increase and acetic acid,; choline, inositol phosphate, glutamic acid, glycine, lysine, lactic; acid, leucine, isoleucine, taurine, and mannitol decrease in stomach; meridan group (P<0.05). The concentration of 3-hydroxy butyric acid,; methionine increase and choline, inositol phosphate, lactic acid,; leucine, isoleucine, glutamic acid, ethanol amine and mannitol decrease; in gallbladder meridian group (P<0.05). Conclusion: The electropuncture; of acupoints on the foot Yangming stomach meridian could regulate the; metabolic profiling of gastric mucosa, resulting in improving the; gastric mucosa repair of gastric ulcer rats.国家自然科学基金项目; 国家重点基础研究发展计划(973计划)项目; 广东省自然科学基金项目; 深圳市科技计划项

A New Methodological Research on Chaotic Encryption Based Watermarking

本文提出一种基于混沌加密的频率域数字图像水印新算法。将含有版权信息的二值图像作为水印,利用混沌密码对其进行加密。利用人类视觉系统(HVS)的特性,实现了水印在原始宿主图像小波域中的自适应嵌入。实验结果证明了对常见噪音和图像处理算法,该水印具有良好的不可见性和鲁棒性。In this paper,we propose an image digital watermarking algorithm based on chaotic encryption in frequency do-main. A binary image carrying copyright information is used as watermarking and is encrypted by a chaotic sequence cipher before it is embedded. Using characteristics of human visual system (HVS),watermark is embedded into the original image in DWT domain. The experimental results show that the watermarks are invisible and robust against noises and common im-age processing methods

Discrete No-Fit Polygon,A Simple Structure for the 2-D Irregular Packing Problem

提出了一个用于求解二维不规则排样问题的离散临界多边形模型.burkE等人的blf算法是求解排样问题的一种有效算法,但其算法对一些特殊实例会产生非法的解.为了解决这个问题,提出了一种基于离散临界多边形模型,并对其正确性作了严格证明.新模型是只含有点和区间的简单模型,在大大降低原问题几何复杂性的同时,也使许多启发式策略可以更容易地求解该问题.计算结果表明,基于离散临界多边型模型的排样算法是很有效的.This paper presents a model based on discrete no-fit polygon for the two-dimensional irregular packing problem.Burke et al.have presented an effective BLF algorithm to solve the irregular packing problem, however, their algorithm might generate invalid results for some special cases.To solve this problem, a model based on discrete no-fit polygon is proposed, and its correctness has been strictly proved.Only points and intervals are only considered by this model, which greatly decreases the geometry complexity of the original problem and makes the problem easily solved by many heuristic strategies.Computational results show that the algorithm based on discrete no-fit polygon model is very efficient.国家自然科学基金No.60773126;福建省自然科学基金No.A07100234;厦门大学985二期信息科技基金No.0000-X07204;厦门大学院士启动基金No.X01109---