语音编码体制抗信道误码典型方法研究

研究了现代中低速语音编码体制抗信道误码所采用的典型方法，主要分析了零冗余抗信道误码方法，包括预测器设计、编码器结构改变、语音参数对信道误码敏感程度的影响、信源／信道联合编码、恢复机制和参数量化编码设计等；此外还阐述了用于语音编码体制的前向纠错技术，包括比特选择的前向纠错和信道编码码类的选择等。抗信道误码能力是语音编码体制的一个重要指标，掌握目前典型的抗信道误码方法，对进一步构造具有高鲁棒性（Ｒｏｂｕｓｔｎｅｓ）的语音编码体制具有重要意义。     

非均衡模型的可解性研究

本文研究了多市场非均衡模型（ＭＤＥＭ）的可解性问题，给出微观ＭＤＥＭ可解性的一个充要条件；推广了Ｉｔｏ［１］的充分条件；对具有Ｂｕｒｋｅｔｔ双曲线聚合［２］和Ｌａｍｂｅｒｔ指数聚合［３］两类非线性形式的宏观ＭＤＥＭ，分别给出其可解性的一个充分条件，并探讨ＭＤＥＭ中一类线性溢出效应的微观基础，Ｉｔｏ［１］所分析的双市场情形是其特例．     

WEB环境的分布式对象技术

当前，ＷＥＢ需求的不断增长，使得ＷＥＢ的开发应用正向分布式结构的方向发展，分布式计算屏蔽了系统中存在的异构性，提供了分布式对象间的互操作机制。ＣＯＲＢＡ是当前分布式计算的一个主要标准，以一个遵循ＣＯＲＢＡ标准的ＷＥＢ应用服务器产品为例，分析了ＷＥＢ环境的分布式对象技术，并提出了一种分布式对象的ＷＥＢ环境构造方式。     

IBM获资8500万仿真核爆炸

ＩＢＭ获资８５００万仿真核爆炸２月１２日,美国能源部（ＤＯＥ）将一项总额达８５００万美元的合同授予了ＩＢＭ公司。在该合同下,ＩＢＭ的ＢｉｇＢｌｕｅ系统将被进一步开发成能够用于核爆炸仿真的超级计算机系统。ＤＯＥ选择ＩＢＭ的ＲＳ／６０００是因为该机构对目...     

甚低速率语音编码中的高效模拟退火算法研究

为了解决600bps甚低速率语音编码中码本矢量量化信噪比低以及抗信道误码能力差的难题,本文提出了一种改进的模拟退火算法,在600bps甚低速率语音编码中得到了成功的应用。首先,采用改进的模拟退火算法设计语音编码参数矢量量化码本。然后,采用模拟退火算法分配码本序号,以此提高在信道误码条件下语音编码算法的鲁棒性。仿真结果表明本算法的量化信噪比与经典的LBG算法相比改善了0.4dB左右,平均误码失真与采用随机分配码本序号的方法相比改善60%以上。非正式主观试听表明600bps语音编码算法的合成语音具有良好的可懂度和自然度,并且在1%信道误码条件下仍然具有良好的性能。     

并行进程快速定界搜索方法及应用

以如何实现高维情形ＳＭ（ｄ）阵列编码为背景,给出一种并行进程快速定界搜索（ＦＢＳＰ）方法,分别用来实现ｄ＝ １和ｄ＝ ２两种不同类型的ＳＭ 阵列编码。介绍了ＦＢＳＰ方法的模型、理论依据、具体应用实例和实现过程。     

神经网络热量平衡法在电网可靠性计算中的应用

提出基于神经网络的热量平衡法（ＮＮＨＢＭ），并将它运用于最小割集的搜索之中，利用它来判断一个图的连通性．为进行实际工程应用，对该算法的软件实现步骤进行了详细的说明．最后对ＩＥＥＥ－ＲＴＳ２４节点系统［７］进行了最小割集搜索的仿真研究，证明了热量平衡法在电网可靠性评估中运用的可行性．     

PID参数自动寻优的可视化实现研究

研究复杂非线性系统ＰＩＤ控制器参数自动寻优环境的可视化建模及可视化计算问题。应用先进可视化计算软件ＭＡＴＬＡＢ５．２及图形化建模仿真工具箱ＳＩＭＵＬＩＮＫ２．２,实现了非线性系统ＰＩＤ参数自动寻优过程的高度一体化和全程可视化。     

多模广义S参数端口连接降阶通用方法及应用

本文利用模式匹配技术，推出了求解任意拓扑结构微波多端口网络连接降阶时广义散射参数（Ｓ参数）的逐次降阶法。本方法避免了大矩阵的求逆，参数构造简单，调整方便，极适合计算机运算。对典型的波导Ｅ面金属膜片进行了分析，证明了本文方法的效能。本方法很容易扩展用以分析波导Ｅ面多膜片、波导电感窗、波导多路分配器等多种结构的性能。     

话者识别系统中语音特征参数的研究与仿真

在说话者识别系统中，提取反映说话者个性的语音信号特征参数是系统的关键问题之一．研究并提取了几种重要的语音特征参数，包括线性预测倒谱系数、美尔倒谱系数、语音动态参数等，对这些参数进行了分析和比较，并研究了将多种参数组合使用对识别系统性能的影响．通过仿真和实验，证明混合参数识别方法能使话者识别系统的正确识别率有明显的提高。     

The 12th International Conference on Service Systems and Service Management ICSSSM'15

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Enterprise resource planning implementation decision & optimization models

To study the uncertain optimization problems on implementation schedule, time-cost trade-off and quality in enterprise resource planning (ERP) implementation, combined with program evaluation and review technique (PERT), some optimization models are proposed, which include the implementation schedule model, the timecost trade-off model, the quality model, and the implementation time-cost-quality synthetic optimization model. A PERT-embedded genetic algorithm (GA) based on stochastic simulation technique is introduced to the optimization models solution. Finally, an example is presented to show that the models and algorithm are reasonable and effective, which can offer a reliable quantitative decision method for ERP implementation.     

THE 8~(th) INTERNATIONAL CONGRESS ON INDUSTRIAL AND APPLIED MATHEMATICS

正August 10-14,2015Beijing,China The International Congress on Industrial and Applied Mathematics(IClAM)is the premier international congress in the field ofapplied mathematics held every four years under the auspices ofthe International Council for Industrial and Applied Mathematics.From August 10 to 14,2015,mathematicians,scientists and entrepreneurs fiom around the world will gather in Beijing,China for the 8th IClAM to be held at     

A calculus for services innovation

Innovation in the services area - especially in the electronic services （e-services） domain - can be systematically developed by first considering the strategic drivers and foci, then the tactical principles and enablers, and finally the operational decision attributes, all of which constitute a process or calculus of services innovation. More specifically, there are four customer drivers （i.e., collaboration, customization, integration and adaptation）, three business foci （i.e., creation-focused, solution-focused and competition-focused）, six business principles （i.e., reconstruct market boundaries, focus on the big picture not numbers, reach beyond existing demand, get strategic sequence right, overcome organizational hurdles and build execution into strategy）, eight technical enablers （i.e., software algorithms, automation, telecommunication, collaboration, standardization, customization, organization, and globalization）, and six attributes of decision informatics （i.e., decision-driven, information-based, real-time, continuously-adaptive, customer-centric and computationally-intensive）. It should be noted that the four customer drivers are all directed at empowering the individual - that is, at recognizing that the individual can, respectively, contribute in a collaborative situation, receive customized or personalized attention, access an integrated system or process, and obtain adaptive real-time or just-in-time input. The developed process or calculus serves to identify the potential white spaces or blue oceans for innovation. In addition to expanding on current innovations in services and related experiences, white spaces are identified for possible future innovations; they include those that can mitigate the unforeseen consequences or abuses of earlier innovations, safeguard our rights to privacy, protect us from the always-on, interconnected world, provide us with an authoritative search engine, and generate a GDP metric that can adequately measure the growing knowledge economy,     

论生物系统中的功能不守恒性

根据能量守恒定律，能量一次转换所做的总功应等于输入的总能量。但在生物系统中，能量的转换是多次的，其总功之和大于系统输入的总能量，此现象称之为功能不守恒性。能量转换效率越高，功能差别越大。能量通过细胞水平的多次转换，总功可提高至2倍左右。能量通过生态系统水平多次转换，总功可提高至1．4倍左右。通过系统内各子系统能流之和称为序能，反映了系统有序性大小，它取决于系统输入总能量和能量转换效率。根据序能原理，用GDP^2／9(GDP为国内生产总值，Q为能量总输入)反映人类社会功能和效率，要比单纯用GDP更客观。绿色GDP应同时考虑使GDP^2／Q增长最大和使自然生态系统的序能最大。人的经济行为和动物的行为对策也符合序能原理。     

Dealing with Human Relations in Chinese Systems Practice

This paper is about the Wuli, Shili, Renli (WSR) systems methodology. An important concept within this, Renli, has been developed from Confucian philosophy to clarify to Chinese researchers the necessity of dealing with human relations in systems practice. At present, the only formal means of operationalizing Renli that people are exploring in China is to import from the West methods for organizing debate. However, the concept of Renli suggests that more is needed than methods alone. In particular, facilitation skills are required. It is argued that the development of facilitation skills can be enhanced if researchers can gain both theoretical and practical knowledge of group dynamics, and engage in activities of self-reflection to look at, and alter, their own roles in these dynamics and the wider sociopolitical system. There are therefore three aspects to Renli: the use of systems methods for organizing debate, the acquisition of facilitation skills, and self-reflection geared toward the development of facilitation skills and enhanced critical awareness of the politics of intervention.     

云环境中邮件服务器面向传输的优化设计

随着云计算的发展,新的应用不断涌现,但电子邮件服务依然占有着重要的地位.邮件服务器是一种I/O密集的应用.在云计算时代,越来越多的用户邮件保存在服务器端,邮件在从客户端传输到服务器端之前,邮件或者邮件的部分内容在服务器端可能已经存在.基于这种现象,提出了一种方案,通过引入计算的代价来降低通信量,从而提高邮件服务器的处理能力.对电子邮件的格式和SMTP协议进行了扩充,引入了附件和正文分离传输的模式.在邮件传输时,客户端先计算附件的散列值,并作为正文的一部分传输到服务器端,服务器端再根据散列值来判断附件是否需要传输.     

金工工艺的优化设计

运用价值工程与运筹工程理论, 在金工工艺单项设计指标优化的基础上, 对其设计指标也进行了全面优化。     

高速低复杂度可重构L&R算法研究与实现

为满足卫星有效载荷数据传输系统高速、高可靠性的需求, 提出一种基于L&R(Luise and Reggiannini)算法的高速低复杂度可重构频偏恢复实现方案。为便于算法逻辑架构实现, 对算法的函数功能进行分解及模块化设计; 为减少乘法器资源消耗, 采用复用分解的自相关函数模块; 为提高L&R算法的精度, 对导频段自相关函数进行多段叠加。结果表明, 高速低复杂度可重构频偏恢复实现方案解调性能损失接近为0 dB, 且优化后的算法结构相比于直接结构可减少92.59%的乘法器消耗, 拆分的自相关函数功能模块具有可复用性和重构性。该算法的可工作时钟速率高达370.37 MHz, 在高速接收机中具有极高的应用价值。