糖尿病血脂异常的治疗

糖尿病是目前危害人类健康的主要疾病之一,是冠心病的独立致病因素。大血管疾病并发症是糖尿病患者的主要死因[1]。有研究提示,血脂异常对糖尿病人群发生大血管并发症有显著作用。糖尿病性血脂异常是一种代谢综合征,属于继发性血脂异常。它的特点是除血糖升高外,在血液中还有     

Sample Size Formulas for Normal Theory T Tests

Formulas that yield minimum sample size for standard T tests are presented. Although the results are approximations, they usually yield the exact solution. Involving only standard normal quantiles, they could be used in an elementary course.     

直觉不分明化拓扑空间的分离公理

以直觉不分明化邻域系为工具,给出了直觉不分明化拓扑空间的T--0,T1,T2分离性的定义,并研究了它们的一些基本性质.     

河北省高校体育课程设置建设

随着我国教育改革的深入,高校公共体育课程改革也不断取得进展,但问题和困惑也同时存在,从课程目标、课程理念、课程结构设置及衔接等问题具体论述,以期为高校体育课程的健康发展提供可参考依据。     

Acquired immunity: immunosenescence and physical activity

Several lines of evidence indicate that infectious diseases, cancer, and autoimmune disorders occur more frequently in elderly people, thus suggesting that altered function of immune organs and cells, such as thymus and T and B lymphocytes are of primary importance in the pathogenesis of these diseases. Furthermore, old subjects are less responsive to vaccine than younger because of immune changes. The most common changes accompanying the adaptive immune system include decrement of T and B cells proliferation, repertoire degeneracy, increase of the memory cell type, decreased numbers of naive cells, and shift from T helper₁ (Th1) to T helper₂ (Th2) response. Regular exercise in the elderly may improve the alterations in acquired immunity which follow the physiological process of aging, allowing a major resistance against external pathogens and a better quality of life.     

云南元江傣话单字音声调的语音实验分析

用语音实验的方法对元江傣话单字音声调的语音材料进行实验分析表明,元江傣话单字音声调的声学特征是每个声调的声学分布空间和调值都是具体的.     

Modeling longitudinal binomial responses: implications from two dueling paradigms

The generalized estimating equations (GEEs) and generalized linear mixed-effects model (GLMM) are the two most popular paradigms to extend models for cross-sectional data to a longitudinal setting. Although the two approaches yield well-interpreted models for continuous outcomes, it is quite a different story when applied to binomial responses. We discuss major modeling differences between the GEE- and GLMM-derived models by presenting new results regarding the model-driven differences. Our results show that GLMM induces some artifacts in the marginal models at assessment times, making it inappropriate when applied to such responses from real study data. The different interpretations of parameters resulting from the conceptual difference between the two modeling approaches also carry quite significant implications and ramifications with respect to data and power analyses. Although a special case involving a scale difference in parameters between GEE and GLMM has been noted in the literature, its implications in real data analysis has not been thoroughly addressed. Further, this special case has a very limited covariate structure and does not apply to most real studies, especially multi-center clinical trials. The new results presented fill a substantial gap in the literature regarding the model-driven differences between the two dueling paradigms.     

Local power of panel unit root tests allowing for structural breaks

The asymptotic local power of least squares–based fixed-T panel unit root tests allowing for a structural break in their individual effects and/or incidental trends of the AR(1) panel data model is studied. Limiting distributions of these tests are derived under a sequence of local alternatives, and analytic expressions show how their means and variances are functions of the break date and the time dimension of the panel. The considered tests have nontrivial local power in a N^?1/2 neighborhood of unity when the panel data model includes individual intercepts. For panel data models with incidental trends, the power of the tests becomes trivial in this neighborhood. However, this problem does not always appear if the tests allow for serial correlation in the error term and completely vanishes in the presence of cross-section correlation. These results show that fixed-T tests have very different theoretical properties than their large-T counterparts. Monte Carlo experiments demonstrate the usefulness of the asymptotic theory in small samples.     

精神荒原，终极救赎——基督教视角下的《荒原》解读

目前关于《荒原》的宗教思想,主要存在“骑士寻找圣杯”和“个人精神世界的崩溃与重组过程”的观点,但两种观点各有其不足。尝试剖析艾略特的《荒原》创作根源,通过对《荒原》的主线分析,找出既能驾驭全诗各片断又能解决“荒原”缺水却有水的矛盾的是基督教主线,即“罪-遭上帝离弃-地狱-救赎”,同时还阐释了在该主线下衍生的无数基督教故事。基于以上分析,推断出艾略特在《荒原》中的创作视角为基督教视角;所表达的核心思想是信仰基督教才能摆脱精神荒原,得到最终救赎。     

腾格里(T(a)ngri)考

本文从汉民族及北方诸民族原始萨满教中崇拜"天"的习俗出发,将古代蒙古高原发现的突厥碑铭语言,吐鲁番、敦煌等地出土的回鹘文献语言、中亚现代突厥语族语言、蒙古语族语言中T(a)ngri(天)的不同音变形式进行比较,证明了T(a)ngri一词借自汉语的"天".