基于智能终端的心电信号采集系统设计

心电信号作为一种重要的生命体征参数,其包含丰富的病理信息,对心血管疾病的预防具有重要的参考价值。目前,市场上的心电信号采集系统体积较大,不便于携带,这为心电信号的及时获取和诊断增加了很大的障碍,因此本文基于对心电信号实时采集的硬件系统的研究,结合消除噪声干扰算法,设计出一种适用于家庭和社区的低功耗、体积小的便携式心电实时采集系统。通过对系统的心电信号采集模块、微控制器模块、数据传输模块和智能终端处理模块等硬件结构、原理和对应系统软件的介绍阐述了新型便携式心电采集系统的设计思想及其优越性。经验证:该系统能够以单导联的方式实现心电信号实时采集,并在智能终端上完成对数据的分析、显示及存储等功能。     

网络群体性反腐事件及其刑事法律效果

网络背景下的群体性反腐事件有其独特的运作规律和特点,具有权利正当性和诉求合理性的特质.它对刑事法律的影响效果体现为如下冲突：个案正义的追求与司法公正的追求、网络反腐的社会效果与刑法权威性、干扰司法独立和外部监督功效、程序正当性与网络反腐事件道德追求.这些法律效果上的研究,有助于客观理性的理解网络群体反腐事件的优势和弊端,为刑事司法网络反腐工作的深入展开提供理论前提.     

儒家文化与和谐图书馆构建

中国古代儒家文化博大精深,包含着非常丰富的关于和谐、融合、和睦的思想和观念。文章就构建和谐图书馆过程中,如何借鉴儒家传统文化包含的"以民为本"、"修身正己"、"和而不同"和"举贤任能"思想的问题进行了探讨,论述了儒家文化对构建和谐图书馆的积极意义。     

单科院校衍生专业选择及发展途径研究

针对单科院校暴露的问题,探索单科院校设置衍生专业的途径,并对衍生专业的发展模式提出了建议.     

Compare diagnostic tests using transformation-invariant smoothed ROC curves()

Receiver operating characteristic (ROC) curve, plotting true positive rates against false positive rates as threshold varies, is an important tool for evaluating biomarkers in diagnostic medicine studies. By definition, ROC curve is monotone increasing from 0 to 1 and is invariant to any monotone transformation of test results. And it is often a curve with certain level of smoothness when test results from the diseased and non-diseased subjects follow continuous distributions. Most existing ROC curve estimation methods do not guarantee all of these properties. One of the exceptions is Du and Tang (2009) which applies certain monotone spline regression procedure to empirical ROC estimates. However, their method does not consider the inherent correlations between empirical ROC estimates. This makes the derivation of the asymptotic properties very difficult. In this paper we propose a penalized weighted least square estimation method, which incorporates the covariance between empirical ROC estimates as a weight matrix. The resulting estimator satisfies all the aforementioned properties, and we show that it is also consistent. Then a resampling approach is used to extend our method for comparisons of two or more diagnostic tests. Our simulations show a significantly improved performance over the existing method, especially for steep ROC curves. We then apply the proposed method to a cancer diagnostic study that compares several newly developed diagnostic biomarkers to a traditional one.     

An almost sure central limit theorem for self-normalized partial sums of weakly dependent random variables

Abstract

We give here an almost sure central limit theorem for self-normalized partial sums of a strictly stationary φ-mixing sequences which is in the domain of attraction of the normal law with mean zero and possibly infinite variance. Our result substantially extend a result on the almost sure central limit theorem previously obtained by Huang and Pang (2010).     

高产、高油、大粒油菜新品种“绵油8号”的选育

绵油8号采用优势互补的优良亲本杂交,通过基因重组、分离和连续定向选择培育而成。其主要优点是产籽量高、含油量高、种子和荚果等农艺性状的商品性好,抗逆性强、适应性广。两年省区试平均比对照增产10．7％,其中增产点增产16.22％;种子含油量比对照高4.4个百分点。适宜在川西、川北等地区推广应用。     

从分层模型视角看出生人口质量的影响因素—以江苏省无锡市为例

文章采用"无锡市2002～2004年孕产妇回顾性调查"数据,尝试使用三层贝努里模型分析方法研究出生人口质量的主要影响因素,设计包括个人、家庭经济类型和区域环境三层模型,将影响无锡市出生人口质量的各层因素纳入三层贝努里模型进行综合分析,结果发现该模型数据的分层效应的确会对该市产妇生育结局产生显著影响;个人、家庭经济类型和社区区域环境的三层分层架构可以解释产妇生育结局存在差异的原因;在三层模型构架下,无锡市产妇出现出生人口质量问题的整体风险概率在(1.658134%,15.4497524%)间浮动;出生人口质量主要受家族遗传因素、污染源及危险因素接触和家庭经济因素的影响.