Research on the System of Underwater Wireless Control And Data Transmission Basing on GSM Short Message

千百年来，人类一直梦想着能实现在任何时间、任何地方、和任何人进行任何方式的信息传递和交流。随着科技的不断发展，在陆地和空中的通信已经得到了迅猛的发展，然而水下无线通信却由于水声信道的恶劣性而成为制约海陆空立体互连的瓶颈。因此，研究水下无线通信具有十分重要的意义。利用目前覆盖范围大，技术成熟的GSM网络的短信息功能来扩展水声通信的传输距离，以实现对水下设备的远程控制和短消息数据的传输是本文的一个应用创新点。本文对实现实用价值的“水－空”监控网络是一个有意义的尝试。该系统的最终设计目标是希望实现“陆地PC控制中心”，“水面中继器”，“水下通信从机”这样一个立体网络的控制和数据传输平台。可以应用在数...People have a dream for thousands of years that is one day we can communicate with anybody at any time, in any place and in any way. In recent years, with the development of science and technology, the communication on land and in air have progressed greatly. But the underwater wireless communication becomes the choke point of the solid communication among sea, land and air all the while. The rese...学位：工学硕士院系专业：计算机与信息工程学院电子工程系_通信与信息系统学号：20023003

Study on Customer Equity -based Brand Extension Decision

摘要品牌延伸是指将现有品牌的名称用于新产品的一种策略。推出新产品是企业应对竞争、拓展市场的重要手段，而品牌延伸是企业在推出新产品时最常用的一种策略。于是，如何提高品牌延伸的成功率就成了企业一个重要的课题。企业主要依靠正确的决策和有效的执行来提高品牌延伸的成功率。本文主要研究的是品牌延伸的决策问题。迄今为止，大多数关于品牌延伸决策的研究都是在品牌资产理论的基础上进行的。品牌资产理论很好地解释了品牌延伸现象，并为品牌延伸决策提供了指导。品牌资产理论认为，品牌是企业最重要的资产之一。品牌延伸实际上是对品牌资产的直接运用，同时它也是企业进一步提升品牌资产的重要手段。品牌延伸的目的在于提升企业的品牌资产...AbstractBrand extension is a strategy of a firm using an established brand name to introduce a new product. To a firm, introducing new products is an important means of replying competition and exploiting market. And brand extension is a usual strategy used by a firm when it introduces a new product. Therefore, how to enhance brand extension success rate has become an important challenge to a firm...学位：管理学硕士院系专业：管理学院企业管理系_企业管理(含财务管理、市场营销、人力资源管理)学号：20021402

Theories and Methods for Wireless Video Quality Assessment

无线视频质量的检测和评价技术是保障新一代网络服务质量的关键技术之一，可应用在无线视频系统的方案设计、产品对比以及业务监控等诸多领域，一直备受业界关注。然而，目前视频质量的自动评测是一个还没得到满意解决、且富有挑战性的课题。尤其在面向无线应用的视频质量客观评测中，由于无线传输的诸多特点，使得传统评测技术更加捉襟见肘。本论文以视频质量评价技术的无线应用为背景，旨在探索适合无线应用特点，且具有较好评测性能的视频质量自动评测方法。论文首先系统整理了人眼视觉系统（HVS）的生理机制及其在视频质量感知和评价中的作用。其次，论文全面研究和总结了当前视频质量评测的技术现状和理论方法。从“离线”和“在线”两大应...It is pivotal for the new generation of wireless network to evaluate its video quality. Video quality assessment can be widely used in the designing, comparing and application of the communication systems. So it attracts great interest of researchers. However, it is still an unsatisfied and challenging subject for people to evalute the quality of a digital video. Due to its characteristic, traditi...学位：工学博士院系专业：信息科学与技术学院通信工程系_通信与信息系统学号：2005140321

销售人员的薪酬与绩效考核

一、问题的提出激励销售人员的方式有很多种,其中薪酬激励是最直接也是最有效的一种方式。一般而言,销售人员的薪酬包括固定部分和提成部分。在薪酬理论中,固定部分(或基本薪酬)需要通过职位分析和职位评价来确定,而提成部分(或绩效薪酬)则要通过绩效考核来确定。所以,销售人员的薪酬与绩效考核的结合主要是指销售人员薪酬的提成部分与销售人员绩效考核的结合。据笔者观察,在实践中销售人员的薪酬与其绩效考核并没有很好地结合在一起。这主要表现在:1.将对销售人员的绩效考核等同于对其销售额(或利润额)的考核。销售管理人员只需考核销售人员的实际销

Research on Building Integrated Analytical Framework for Policy Change ——Based on the Analysis of Influencing Factors of Policy Change

事物是普遍联系的，联系促进事物发展。事物的联系是指事物内部各要素之间相互影响、相互制约和相互作用的一种关系；事物在发展的过程中，这些联系会呈现各种的组合关系，这种关系就是所谓的“框架”；框架不是人为强加出来的，它能够客观反映事物本身。对事实的观察和说明总是要通过分析框架或范式来展开的，由此说来政策变迁分析框架是政策科学的构成要项，是观察和解释政策变迁过程的工具。本研究将沿着整合理论和改进方法的思路，综合现有的理论框架和政策经验，选择具有解释力的政策变迁影响因素，依照政策系统的逻辑构建整合性的政策变迁分析框架，从政策变迁影响因素的视角全面描述与考察政策变迁过程，并利用政策个案检验该...Things are generally linking between the other, and these links promote the development of things. The relation between things means that the various elements of things impact, constraint and interact each other mutually; in the process of development, these links will show a combination of a variety of relationship, which is the so-called ‘framework’; framework is not imposed by man-made, it can...学位：管理学硕士院系专业：公共事务学院公共管理系_行政管理学号：1392006115072

药物成瘾：脑可塑性机制与靶向干预

药物成瘾引起多脑区环路可塑变化，伴随相应的脑区功能改变和成瘾记忆形成。利用成瘾动物模型，结合电生理记录与环路操纵，我们证明脑可塑变化在药物成瘾中的重要作用。进一步地利用非侵入脑刺激技术结合同步电生理记录，我们给成瘾患者进行系统的皮层可塑测量，进行精准脑功能研究；并利用神经调控靶向干预对药物成瘾患者进行脑功能综合康复。这些研究结果提示脑可塑性在药物成瘾中的重要作用，为通过靶向干预脑功能调节脑可塑性治疗药物成瘾提供依据

Bandwidth Estimation Algorithm Based on ACK Packet Pair

随着因特网的发展，网络管理和效率面临新的挑战。网络性能测量对协议的改进和网络服务质量的提高有重要意义。而网络带宽是关键的性能指标，在多种网络协议中起重要作用，例如网络拥塞控制、路由选择和媒体点播等。因此，带宽测量的算法研究一直是网络技术领域的研究热点。 本文研究可用带宽的测量方法，目的是获取端对端路径上瓶颈链路的可用带宽。可用带宽测量技术可分为两种。（1）数据包对技术利用数据包对经过瓶颈链路产生的时间间隔来估计带宽，不足之处是对背景流量非常敏感。（2）分析探测数据包的发送速率和单向时延变化规律来估计带宽，不足之处是测量开销大，不适用于资源有限的网络环境。 为了解决现有方法的不足，本文改进数...With the development of Internet, the management and performance of networks face new challenges. To improve network performance, network measurement is important for protocol design and quality of service. As a key performance indicator, Bandwidth is widely used in various network mechanisms, such as network congestion control, routing and streaming media applications. And bandwidth estimation ha...学位：工学硕士院系专业：信息科学与技术学院_计算机应用技术学号：2302011115310

Real-time evaluation model for the transmission quality of under water image

基于VQM客观评测模型体系,提出了一种适合水声及无线信道传输的实时图像质量评测模型。模型基于三个分项参数(结构损伤、空域边缘能量增加、空域边缘能量损耗)描述水下图像传输中压缩图像和非压缩图像的典型劣化特征。通过这三个分项参数,可有效地评测水下图像的劣化程度,统计实验表明,本实时评测模型具有较好的评测准确性、单调性和一致性。同时,模型利用了奇异值秩可压缩性,进一步压缩了参考特征的信息量,节约了实时评测所需的信道资源,为实现实时评测的业务评测目标提供了新途径。研究表明,本方法占用的额外信息开销不超过数据信息量的3%,对于水声信道、无线信道等资源受限的实时评测应用具有实用价值。此外,论文设计了基于面积理论的质量网图模型,通过网图的开闭程度,形象直观地反映图像质量的好坏,克服了传统方式在评测结果表达中存在的综合分物理意义不明确等缺陷。本实时评测模型可应用在水下监测、海底勘探等水下图像通信场合,具有较好的应用前景。The paper proposes a real-time image quality evaluation model, which is based on the VQM quality evaluation system.The model is suitable for underwater and wireless applications.The model adopts three parameters, i.e.structure error, energy augment and energy expense, to describe the distortion of the compressed or uncompressed images; and the evaluation model has good evaluation veracity, monotonicity and consistency.The model also takes the advantage of compressing the order of the singular value, which reduces the information of the reference feature, saves the channel resource and provides a new approach to realize real-time evaluation.Research shows that the additional signal cost does not exceed 3% of the total information, so this method is suitable for the applications like underwater acoustic communication or wireless communication with limited channel resource.Besides, the paper also proposes a model that uses triangle image to express the image quality, which overcomes the shortcoming of the confusion in quality score.Experiment shows that the proposed model could be widely used in underwater image communication applications, such as underwater inspection, sea exploration and so on.福建省自然科学基金“青年科技人才创新项目”(2009J05154)资

New Method for Temporal Information Detection of Video Quality Assessment

针对视频质量评测中时域信息的检测方法,本文提出了新的计算方法。该方法根据AnSI T1.801.03-1996和ITu-T rECOMMEndATIOn P.910时域信息(TI)的概念定义和方法推荐,采用先对时域梯度图求直方图,再在所求直方图的基础上进行统计计算的方式,克服了直接进行时域梯度rMS计算带来的乘法运算量与画面像素数成正比从而导致耗时较多的缺陷。实验结果表明,采用本改进方式的乘法运算量仅取决于直方图的灰度级,而与具体像素数无关,在同等条件下的平均计算效率可提高约三倍,且对时域信息的检测效果与推荐方法相仿。该方法实现简单,易于集成,在视频质量评测应用中具有较好的推广价值。Concerning about the Temporal Information(TI) detection for video quality assessment,a new method is proposed based on the definition and algorithm recommended by the ANSI T1.801.03-1996 and ITU-T Recommendation P.910.At first,image of the temporal derivative would be changed into the histogram domain,and then the statistic calculation(RMS and so on) was done for the temporal information.The drawback of the conventional method was overcome whose workload would increase greatly with the increase of the number of the pixel in scene image.Experimental results show that the computation complexity is dependent on the gray level of histogram,but is independent of the number of the pixel by the new method.In the same experiment condition,the computational efficiency is improved three times while the performance is similar to the conventional method.The algorithm is so simple and feasible that it could be used for the application of video quality assessment.福建省自然科学基金青年科技人才创新资助项目(2009J05154

Quick estimation of end to end PQoS of image

本文介绍了一种新型的利用图像活动性(IAM)快速估计水下图像端到端体验质量的方法。首先引入结构相似度(SSIM)作为图像感知服务质量(PQo S)参数评价图像质量,将图像初始活动性(IAM)作为区分图像内容的本征参数;随后基于质量向量(QV)的概念,分别分析了非压缩图像的结构相似度,图像初实活动性与无条件丢失概率(SSIM-IAM.-ulp)之间的联合特性,以及压缩图像的结构相似性,压缩率与无条件丢失概率(SSIM-IAM.-ulp)之间的联合特性。最后,在上述联合特性的基础上提出了劣化图像SSIM的预测算法。测试实验证明,该类算法有较高的预测准确率,预测误差最低可达0.8%。This paper introduces a novel method for quick estimating the end to end Perceived Quality of Service( PQo S) of underwater image based on image activity measure( IAM). Structure Similarity( SSIM) is first introduced as the evaluation standard of image PQo S parameter to evaluate the quality of image,while the IAM of original image is utilized as an intrinsic parameter to discriminate the image contents. Then,based on the concept of quality vector( QV),the SSIM-ulp-IAM0 features for non-compressed picture are analyzed,and the SSIM-CR-ulp features for compressed picture are analyzed as well. On this basis,the prediction algorithm based on SSIM for the degraded image is proposed. Test experiment result shows that this kind of prediction algorithm has high accuracy rate,and the lowest prediction error reaches to 0. 8%.国家自然科学基金面上(61571377;61471308)项目资