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61.
传统的教材编纂法属于"显示完美式教材编纂法",力求显示教材已将相应领域的问题都圆满解决,对于其中存在的问题不有意加以显示,甚至有意加以掩藏,故无法激发学生的创新意识、创新能力,甚或对创新有抑制作用。应采用"显示问题式教材编纂法",力求将相应领域存在的各种问题显示出来,使学生产生创新的意念,明了创新的着力点,从而有力地促进学生创新能力的提高。  相似文献   
62.
根据建筑师实际工作和注册认证的需要,在建筑学专业场地设计课程的教学实践中,分析研究了教学内容、教学方法、课时分配、教材选用等问题,并编制相应的练习题及多媒体教学课件,为建筑师注册认证奠定坚实的理论基础。  相似文献   
63.
Abstract

In this article, we have considered the problem of estimation of population variance on current (second) occasion in two occasion successive (rotation) sampling. A class of estimators of population variance has been proposed and its asymptotic properties have been discussed. The proposed class of estimators is compared with the sample variance estimator when there is no matching from the previous occasion and the Singh et al. (2013) estimator. Optimum replacement policy is discussed. It has been shown that the suggested estimator is more efficient than the Singh et al. (2013) estimator and a usual unbiased estimator when there is no matching. An empirical study is carried out in support of the present study.  相似文献   
64.
Longer life expectancy has increased concern about living standards among elder women. This paper examines the relation between labor market status and living standard post-retirement. We use data from two national surveys to contrast economic circumstances of post-retirement aged and currently employed women. Financial resources of aged women and factors associated with their magnitude are identified. We examine current economic resources and employee benefits of women who will retire after the year 2000. The paper concludes with a discussion of proactive mid-life strategies for long-term economic stability among women, with emphasis on unique concerns, of black women.  相似文献   
65.
ABSTRACT

This paper addresses the problem of estimation of the population mean on the current (second) occasion in two-occasion successive sampling. Utilizing the readily available information on several auxiliary variables on both occasions and the information on the study variable from the previous occasion, an estimation procedure of the population mean on the current occasion has been proposed. Theoretical properties of the proposed estimator have been investigated. Optimum replacement policy to the proposed estimator has been discussed. The proposed estimator has been compared empirically with the sample mean estimator, when there is no matching and the optimum estimator which is a linear combination of the means of the matched and unmatched portions of the sample at the current occasion. Appropriate recommendations have been made for practical applications.  相似文献   
66.
通过对水泥混凝土路面损坏原因的分析,阐述路面修补材料的性能要求,说明路面修补材料在国内外 的研究现状及存在的问题,提出新型水泥混凝土路面修补材料的发展方向.  相似文献   
67.
Severe departures from normality occur frequently for null distributions of statistics associated with applications of mulLi-response permutation procedures (MRPP) for either small or large finite populations. This paper describes the commonly encountered situation associated with asymptotic non-normality for null distributions of MRPP statistics which does not depend on the underlying multivariate distribution. In addition, this paper establishes the existence of a non-degenerate underlying distribution for which the null distributions of MRPP statistics are asymptotically non-normal for essentially all size structure configurations. It is known that MRPP statistics are symmetric versions of a broader class of statistics, most of which are asymmetric. Because of the non-normality associated with null distributions of MRPP statistics, this paper includes necessary results for inferences based on the exact first three moments of anv statistic in this broader class (analogous to existing results for MRPP statistics).  相似文献   
68.
刑事附带民事诉讼是我国一项特殊且重要的诉讼制度,在司法实践中很有必要。然而,由于立法的不完善且随着人们对诉讼引发的深入研究和我国诉讼法实践的不断发展,此制度的弊端也不断暴露出来,引起了众多的争议。因此,有必要适时地对这一程序制度进行修改,使之具有科学性、合理性和可操作性,以充分体现诉讼效益原则和诉讼经济原则,实现刑事审判理论和实际的有效统一。  相似文献   
69.
提出了采用弹性二相法结合物质平衡方程作为计算全井储量的新方法。弹性二相法主要用于气藏开发进入拟稳态以后,要求压力和产量的测量精确,气藏的工作制度对弹性二相法储量也有很大影响,其计算可靠程度已被矿场实际证实;物质平衡方程在开发初期计算精度不高。将弹性二相法与物质平衡法结合建立多目标优化函数,该方法既能很好地应用弹性二相法,又能体现物质平衡,使得该方法适用范围更广,计算结果更可靠,对致密气藏具有更好的推广应用价值。通过实例气井动态储量进行的验证对比表明,该方法在理论上是合理的,实际验证是可行的。  相似文献   
70.
In this paper, we propose a spatial model for the initiation of cracks in the bone cement of hip replacement specimens. The failure of hip replacements can be attributed mainly to damage accumulation, consisting of crack initiation and growth, occurring in the cement mantle that interlocks the hip prosthesis and the femur bone. Since crack initiation is an important factor in determining the lifetime of a replacement, the understanding of the reasons for crack initiation is vital in attempting to prolong the life of the hip replacement. The data consist of crack location coordinates from five laboratory experimental models, together with stress measurements. It is known that stress plays a major role in the initiation of cracks, and it is also known that other unmeasurable factors such as air bubbles (pores) in the cement mantle are also influential. We propose an identity-link spatial Poisson regression model for the counts of cracks in discrete regions of the cement, incorporating both the measured (stress), and through a latent process, any unmeasured factors (possibly pores) that may be influential. All analysis is carried out in a Bayesian framework, allowing for the inclusion of prior information obtained from engineers, and parameter estimation for the model is done via Markov chain Monte Carlo techniques.  相似文献   
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