民族唱法歌唱技巧策略研究——从借鉴美声唱法的角度出发

本文通过对美声唱法和民族唱法发声技巧的比较,对二者的共同规律与个性差异进行了分析与研究,指出在民族唱法的演唱中有效借鉴美声唱法的几个切入点,提出广采博纳的声乐艺术发展思路.     

FDI对我国经济的影响及对策

外商直接投资已成为我国经济发展的重要组成部分,合理吸收和利用外商直接投资,对促进我国的经济发展具有重要意义,但在吸收和利用过程中必须注意其负面影响.本文结合改革开放以来我国利用外商直接投资的情况,分析了外商直接投资对我国经济的影响,并针对存在的问题提出了相应的对策.     

How non-normality affects the quadratic discriminant function

The quadratic discriminant function is commonly used for the two group classification problem when the covariance matrices in the two populations are substantially unequal. This procedure is optimal when both populations are multivariate normal with known means and covariance matrices. This study examined the robustness of the QDF to non-normality. Sampling experiments were conducted to estimate expected actual error rates for the QDF when sampling from a variety of non-normal distributions. Results indicated that the QDF was robust to non-normality except when the distributions were highly skewed, in which case relatively large deviations from optimal were observed. In all cases studied the average probabilities of misclassification were relatively stable while the individual population error rates exhibited considerable variability.     

Facilities and HIV prevention in bathhouse and sex club environments

This project evaluated the extent to which businesses with a primary purpose of providing opportunities for sexual encounters between men (e.g., bathhouses and sex clubs) have implemented strategies that target their customers with important HIV and STD prevention messages. Between October 1996 and February 1997, we conducted structured telephone interviews with 63 businesses throughout the United States in order to describe their facilities and their HIV education and prevention efforts. Types of facilities offered were related to what businesses called themselves and the kinds of sex space they provided. All of the businesses reported that they provided condoms and lubricant on site; 95% provided educational materials such as posters and flyers about HIV/AIDS; and 40% provided HIV testing on site, with half of these also providing some type of STD testing. Although some level of HIV prevention and educational efforts by these businesses are described, further investigation into their efficacy is required.     

On the Meaning of Occupational Status: Implications for Stratification Theory and Research

Abstract

There is a controversy regarding the meaning of occupational status centering around the issue of whether status differences continue to entail deference entitlement. This article suggests that deferential behavior is still linked to occupational status differences but, as a result of the complexity of occupational systems in industrial societies, there have been changes in the settings in which displays of deference occur and in the manner in which deference is expressed A source of confusion in the debate on the meaning of occupational status is the failure to distinguish between differences in status and differences in the occupational characteristics on a basis of which status is accorded This distinction and its implications for class and power hierarchies are discussed The article concludes with an argument for the necessity of situating the process of status differentiation in “status assignment systems”.     

端木蕻良与萧红创作的相互影响

萧红和端木蕻良结合以后，他们的创作发生了相互的影响。萧红在创作情境、情感表现、叙事的完整性和故事性、以及创作的自传性和主体意识的表现等方面，可以看到端木的影响，这些影响是积极的。同时，端木的创作在题材和主题、情感和人物表现方面．也可以看到萧红的影响。但是，萧红的病逝，以及二人的结合所招致的非难，给端木的身心造成极大损害，对他的创作产生了不利影响。     

论企业结构调整中的机制创新

企业结构调整是企业推进技术进步、培育新的增长点、增强企业活力、提高企业核心竞争能力的根本性措施.在企业结构调整中,不仅要调整企业要素的构成,还必须加强企业运行机制的建设,只有转变经营观念,抓好机制创新与深化改革、机制创新与加强企业管理、机制创新与培育新的增长点的结合,才能把企业结构调整与机制创新有机地融合起来,使企业处于良好的循环状态,企业才会具有旺盛的生命力.     

微波管CAD技术进展

传统的经验设计方法很难综合性地进一步提高微波管的功率、带宽、增益、效率及非线性特性等性能,高精度的微波管CAD模拟软件是改进设计,提高性能的主要手段。该文综述了微波管CAD技术的国内外研究进展,介绍了微波管CAD软件的主要分类及代表性软件,特别是我国自主研发的二维宽带大功率行波管CAD集成环境软件系统及三维微波管模拟器套装。展望了微波管CAD技术的发展前景,对我国自主开发微波管CAD软件提出了一些建议。     

工程质量的症结及对策

质量是工程建设的生命线,是工程建设的核心.但我们的建设工程质量主要存在着有法不依,执法不严,违反建设程序办事,建筑市场管理混乱,工程监理不力,建筑原料不合格等问题,我们政府主管部门必须加大工程质量管理的力度,严格遵守建设程序,有法必依,执法必严,认真抓好建筑材料准用制度,从根本上保证工程质量优良,确保国家财产和人民生命的安全.