基于改进谱平滑策略的IMCRA算法及其语音增强

噪声谱估计算法在单通道语音增强方法中起着重要作用,为了改善噪声谱估计算法对噪声的估计和更新能力,结合最小统计（MS）算法,对改进的基于控制的递归平均（IMCRA）噪声谱估计算法的递归平均参数进行改进,并用一阶递归的方式对平滑功率谱的最小值进行改进。采用谱减法对含噪语音信号作去噪处理,从客观和主观两方面对不同算法的性能进行评价,对比分析不同噪声不同信噪比下增强前后语音的分段信噪比（segSNR）、PESQ得分、MOS得分。实验结果表明,提出的方法能够更好地跟踪噪声信号变化,改善语音质量。     

新成品油定价机制运行以来情况评价及相关建议

本文分析和评价了国家自颁布实行新成品油定价机制以来对国内油价进行的调整情况,认为新成品油定价机制向市场化迈进了一大步,取得了明显的进步,同时也存在调整时间滞后于国际市场、容易诱发投机、供需因素考虑不周等不足,并提出了完善成品油定价机制、稳定成品油市场的对策建议。     

基于Logistic的信用卡套现侦测评分模型

信用卡套现是信用卡产业面临的一种主要风险.单笔的套现交易与正常交易间无显著差异,难以进行基于特征的过滤筛选.为自动、高效地识别套现账户,根据统计学特征先遴选出各相关变量,并结合业务分析,利用Logistic回归模型的非线性曲线特征缺陷,克服其自变量多维相关敏感性缺陷,计算出各变量的影响权重系数,构建了信用卡套现侦测评分模型.实践表明识别准确率达到82.72%.     

樟村坪磷矿不突破概算的体会

樟村坪磷矿工程建设中遇到洪水袭击、投资政策变化。投资不能按期到位及气候恶劣、山高林密等各种困难,由于严格按基建程序办事,合理选择施工队伍、加强管理、按照实际情况及时修改设计,重视技术进步,在不足三年的实际施工期内基本建成。     

基于稳健滤波技术的测量异常值处理的研究

本文基于稳键滤波的 M估计技术 ,提出了一种全新的、对大型旋转机械的表面参数测量中出现的异常值的处理方法 ,并给出了数学模型和实验结果。经过此方法处理后的测量数据 ,可以保证在时间顺序上不会发生断裂 ,而且消除了异常值的影响 ,取得了令人满意的结果并为数据的进一步处理、存储和显示做好准备工作。     

《长距离输送管道工程投资估算编制细则》实施前后的对比分析

《长距离输送管道工程投资估算编制细则》实施后,长输管道投资估算的编制深度和费用类别划分发生了变化。通过对《长距离输送管道工程投资估算编制细则》与《石油建设项目可行性研究投资估算编制规定》进行对比,分析两者在适用范围、费用划分、编制深度等方面存在的主要变化内容,探讨了在投资估算编制过程中如何理解并正确使用《长距离输送管道工程投资估算编制细则》以及在使用中应该注意的问题,确保编制出的估算文件能够更合理、准确地反映项目建设投资水平。     

大同机场建设用地地质灾害危险性评估

大同机场场址预选在大同县倍加皂镇以北 ,根据以往的地质信息资料 ,沿拟建机场的飞机主跑道线 ,横穿了七条第四系松散层断裂 ,这些断裂埋深 5～ 70m ,且与区域活动断裂走向一致。飞机主跑道是否会受到断裂引发的地裂缝破坏 ,是危险性评估的重点。为此 ,本次对飞机主跑道线进行深层地震勘探 ,勘探深度 1 0 0 0m ,完全穿透松散层的底界 ,并进入基岩 1 4 0～ 40 0m ,很好的控制了隐伏基底基岩面起伏的原始形态 ,准确判定了基底隐伏构造断裂的发育特征 ,为评价新构造活动对机场工程建设的危害提供了可靠的依据     

Validation of the Child Premorbid Intelligence Estimate method to predict premorbid Wechsler Intelligence Scale for Children-Fourth Edition Full Scale IQ among children with brain injury.

Determination of neuropsychological impairment involves contrasting obtained performances with a comparison standard, which is often an estimate of premorbid IQ. M. R. Schoenberg, R. T. Lange, T. A. Brickell, and D. H. Saklofske (2007) proposed the Child Premorbid Intelligence Estimate (CPIE) to predict premorbid Full Scale IQ (FSIQ) using the Wechsler Intelligence Scale for Children-4th Edition (WISC-IV; Wechsler, 2003). The CPIE includes 12 algorithms to predict FSIQ, 1 using demographic variables and 11 algorithms combining WISC-IV subtest raw scores with demographic variables. The CPIE was applied to a sample of children with acquired traumatic brain injury (TBI sample; n = 40) and a healthy demographically matched sample (n = 40). Paired-samples t tests found estimated premorbid FSIQ differed from obtained FSIQ when applied to the TBI sample (ps ≤ .01). When applied to healthy peers, estimated and obtained FSIQ did not differ (ps > .02). The demographic only algorithm performed well at a group level, but estimates were restricted in range. Algorithms combining single subtest scores with demographics performed adequately. Results support the clinical application of the CPIE algorithms. However, limitations to estimating individual premorbid ability, including statistical and developmental factors, must be considered. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

如何做好综合布线系统中线缆的选择

本文阐述了在选择线缆时需要考虑的一些因素。     

A Robust Method for Multiple Linear Regression

Techniques of fitting are said to be resistant when the result is not greatly altered in the case a small fraction of the data is altered: techniques of fitting are said to be robust of efficiency when their statistical efficiency remains high for conditions more realistic than the utopian cases of Gaussian distributions with errors of equal variance. These properties are particularly important in the formative stages of model building when the form of the response is not known exactly. Techniques with these properties are proposed and discussed.