基于Fast ICA的多说话人识别系统

针对多人混合语音条件下说话人身份难以识别的问题,提出了一种使用快速独立分量分析（Fast ICA）方法分离各个说话人的语音信号,并采用RBF神经网络方法进行说话人识别的策略.由于不同语音源信号保持相对独立,利用盲信号分离的思想,使用Fast ICA方法用于信号的分离,从而对获得的独立语音数据分别提取说话人特征,采用RBF神经网络模型实现多说话人身份的识别.实验结果表明,该方法能有效地实现混合语音条件下的说话人识别.     

文秘专业速录课程教学方法探究

随着信息化技术的发展,速录作为一门新兴技能课程在职业院校不断开设。为了达到结合专业特色提高综合素质培养复合型速录人才的教学目标,结合对市场需求的分析,根据教学实际情况,本文对速录教学方式方法进行了初步探讨。     

Control vector optimization and genetic algorithms for mixed-integer dynamic optimization in the synthesis of rice drying processes

Rice drying synthesis is an essential operation that has to be done carefully and cost-effectively. Rice is harvested at high moisture content and hence must be dried within 24 h for safe storage. However, improper drying can cause fissuring in the rice grain, and thus greatly reduce its market value. Multi-pass drying systems are therefore used to gradually bring moisture content to desired level.The problem of rice synthesis, considered in this study, seeks the configuration of units and their corresponding operating conditions that maximize rice quality. This problem is formulated as a mixed-integer dynamic optimization problem. The integer part of the problem reflects process alternatives while the dynamic part originates from nonlinear differential-algebraic equations describing the drying behavior of a rice grain.Clearly such a formidable problem is not easy to solve. Hence, we propose an approach that makes use of two algorithms: a genetic algorithm to search for the best configuration of units and a control vector parameterization approach that optimizes the operating conditions for each configuration. We demonstrate the effectiveness of the approach on a case study.     

基于三菱PLC的啤酒糖化控制液位系统实验设计

设计在对PLC技术产生和发展的总结基础上,具体介绍了三菱Q系列PLC的硬件配置和GX-Developer软件的使用方法;建立了基于试验法建模的单容水槽对象的液位的数学模型;完成了基于PID控制策略的单回路控制系统设计,并采用经验法进行了PID参数的整定;在单回路控制方法的基础上研究和设计了积分分离算法。实验结果得到了比较满意的过渡过程曲线,验证了PID控制器控制实际对象的简便睦、通用性;验证了积分分离算法可以有效地减小超调量,控制效果要优于普通PID控制。     

网络专题知识组织知识元自动抽取系统的设计与实现

采用Visual studio.NET 开发平台,使用C#程序设计语言以及XML知识描述和数据存储,对网络专题知识组织和知识元自动抽取系统进行开发设计。对该系统的文本信息预处理、快速汉字结合自增长分词、词频全文精确统计等重要功能的设计与实现进行了深入研究。     

Algorithms: avoiding the implementation of institutional biases

ABSTRACT

Computer algorithms, the logic and code that power automated decision-making programs, increasingly dominate many aspects of modern society. There are already many examples of institutional biases – including ideological bias, racism, sexism, ableism – being solidified in algorithms, causing harm to already underprivileged populations. This article explores library-specific and society-wide examples as well as efforts to prevent the implementation of these biases in the future.     

Planning readings: a comparative exploration of basic algorithms

Conventional introduction to computer science presents individual algorithmic paradigms in the context of specific, prototypical problems. To complement this algorithm-centric instruction, this study additionally advocates problem-centric instruction. I present an original problem drawn from students' life that is simply stated but provides rich discussions of different approaches. It lends itself to a wide range of didactic means from individual or group study to whole class discussions under various levels of guidance by the instructor. I suggest diverse algorithms for solving it, covering some of the most important algorithmic paradigms. Some of these algorithms (greedy, divide-and-conquer) do not produce optimal solutions but may nevertheless have their merits in practice. The best algorithms are illustrative instances of some of the most sophisticated paradigms introduced in undergraduate curricula (dynamic programming, graphs).     

我国体育消费市场细分化的探讨

为了认识和明确体育消费的目标市场,促进体育商品的营销,更好地为我国居民生活和体育健身服务。通过文献资料研究和逻辑分析方法,探讨了体育消费市场的细分化概念、作用、原则、方法、标准以及细分程序。     

细分表面处理函数初探

本文分析了3DSMAX中常用的细分表面处理函数。这些函数包括以下功能:当前项点的锐化特性、用指定名称定义细分表面、为当前表面定义皱褶边、改变细分表面默认的近似表面、为当前表面定义一条修建边等。本文分析了这些函数的常用参数,阐述了各个函数的应用方法,对那些三维建模编程工作者有所帮助。     

社会分层——体育消费研究的一个新视角

我国体育消费呈现出阶层分化趋势，有必要从社会分层视角研究体育消费。从社会分层视角研究体育消费的功效在于使体育市场细分更有效，使研究易于标准化，更易透视体育消费的特点。从社会分层视角促进体育消费，在宏观（国家）层次上要缓解和解决贫富分化问题，大力培育中产阶层；在中观（市场）层次上要合理调整、充分利用体育资源，满足多层次体育消费需求；在微观（企业）层次上要进行合理的体育市场细分和定位，并采取有效的目标市场战略。