Measurement error correction for the cumulative average model in the survival analysis of nutritional data: application to Nurses’ Health Study

The use of the cumulative average model to investigate the association between disease incidence and repeated measurements of exposures in medical follow-up studies can be dated back to the 1960s (Kahn and Dawber, J Chron Dis 19:611–620, 1966). This model takes advantage of all prior data and thus should provide a statistically more powerful test of disease-exposure associations. Measurement error in covariates is common for medical follow-up studies. Many methods have been proposed to correct for measurement error. To the best of our knowledge, no methods have been proposed yet to correct for measurement error in the cumulative average model. In this article, we propose a regression calibration approach to correct relative risk estimates for measurement error. The approach is illustrated with data from the Nurses’ Health Study relating incident breast cancer between 1980 and 2002 to time-dependent measures of calorie-adjusted saturated fat intake, controlling for total caloric intake, alcohol intake, and baseline age.     

产业竞争力对货币国际化的决定性作用研究

通过扩展比较优势理论的框架,以及对日元国际化典型化事实的考察,分析一国产业竞争力和金融竞争力对该国货币国际化的影响,认为前者是货币国际化的决定性因素。货币国际化本质上是一国产业竞争力在货币领域的反映和延伸,要推进货币国际化进程,关键在于提高本国的产业竞争力,仅仅通过培育、完善金融资本市场,短期内可以有一定成效,但是长期来看,货币国际化的前景是暗淡的。     

风险背景下的传播伦理研究

现代风险有严重危害性、不确定性、不可见性、非经验性、全球性和个体性等特点。作为一种技术、制度和人为的后果,风险本身无法自我呈现,它总是已经被中介了,在现代社会,大众传媒又具有重要的中介价值。因此,风险问题总是一个传播和沟通的问题,在类似危机传播这样的技术性方案无能为力的情况下,传播伦理的思考无疑成为了重要的选择之一,通过一些例子和边界的设定,最终的目标是建立一个充满弹性和宽容的传播(沟通)伦理机制,召唤所有可能的力量来参与这场巨大的对话,共同面对或超越风险最后的疯狂。     

论知识经济条件下高校德育的开放性

在知识经济条件下,由知识经济特征所引发的价值观念和行为规范等一系列新变化,势必对高校德育提出严峻挑战.拓展德育的领域和空间,拓宽德育的视野和途径,改进德育的内容和手段,加强德育的开放性和有效性,已成为时代向我们提出的重大课题.     

Chebyshev映射混沌扩频序列的奇／偶相关特性分析

分析Chebyshev映射混沌扩频序列的奇／偶相关特性，并通过计算机仿真，说明Chebyshev映射混沌扩频序列具有理想的奇／偶相关特性。     

System Transformation and Development Path on Medical Care

China's basic medical care system has achieved universal coverage, faced the system transformation with substance fair. Under the transformation background from universal coverage to integration on urban and rural areas, and the transformation direction from the "medical care" to "health for all", through the institutional transition path on system design, service delivery, fi nancial support, this paper points out that how to improve quality of medical care and optimizing the level of health care services, match sustainable funding system and improving payment system, which in public health, medical services, medical care and medicine supply, realize the transformation and the development from universal medical care to health care.     

一双发现美的眼睛——《浮生六记》中陈芸的生活态度分析

明清时期随着社会的进步和发展,人们对待生活的态度也在发生着变化。社会的生活环境不同了,人们对待生活的态度也随之发生变化。男人在这个社会里改变着,女人同样也在改变着。《浮生六记》中的陈芸就是这一时期女性观念改变的一个典型代表。     

Convergence for weighted sums of widely orthant dependent random variables

ABSTRACT

In this article, a complete convergence result and a complete moment convergence result are obtained for the weighted sums of widely orthant dependent random variables under mild conditions. As corollaries, the corresponding results are also obtained under the extended negatively orthant dependent setup. In particular, the complete convergence result generalizes and improves the related known works in the literature.     

基于声卡和复用技术的多路数据采集

介绍使用声卡和时分多路复用技术实现多路数据采集的设计方案、实现方法及注意的问题．     

宽带光纤接入网

光纤接入网是近十年来发展起来的新技术,负责光传送网宽带接入用户最后1 km的传输。宽带光纤接入网从模拟发展到数字接入网,光纤/同轴混合网络和无源光网络分别为其代表。HFC是上世纪90年代中期发展起来的技术,已得到了广泛应用,而PON是最近几年兴起的新技术,包括ATM无源光网络、以太无源光网络和千兆无源光网络,文中指出了它们的关键技术和系统特点。