A Parametric Bootstrap Test for Two-Way ANOVA Model Without Interaction Under Heteroscedasticity

In this article we consider the two-way ANOVA model without interaction under heteroscedasticity. For the problem of testing equal effects of factors, we propose a parametric bootstrap (PB) approach and compare it with existing the generalized F (GF) test. The Type I error rates and powers of the tests are evaluated using Monte Carlo simulation. Our studies show that the PB test performs better than the GF test. The PB test performs very satisfactorily even for small samples while the GF test exhibits poor Type I error properties when the number of factorial combinations or treatments goes up. It is also noted that the same tests can be used to test the significance of random effect variance component in a two-way mixed-effects model under unequal error variances.     

Static Hedging of Geometric Average Asian Options with Standard Options

In this article, we first establish a theorem that represents the price of an Asian option in terms of standard European options with a shorter term and different strikes. Then using Gauss–Hermite numerical integration, we discretize our theorem so as to use Monte Carlo simulation to examine the error of the static hedging under the Black–Scholes model and the Merton jump-diffusion model. For ease of comparison, we also provide the error of the dynamic hedging. The numerical results show that the static hedging strategy performs better than the dynamic one under both models.     

D-optimal Factorial Designs under Generalized Linear Models

Generalized linear models (GLMs) have been used widely for modeling the mean response both for discrete and continuous random variables with an emphasis on categorical response. Recently Yang, Mandal and Majumdar (2013 Yang, J., Mandal, A., Majumdar, D. (2013). Optimal designs for 2^k factorial experiments with binary response. Technical Report, Available at: http://arxiv.org/pdf/1109.5320v4.pdf. [Google Scholar]) considered full factorial and fractional factorial locally D-optimal designs for binary response and two-level experimental factors. In this article, we extend their results to a general setup with response belonging to a single-parameter exponential family and for multilevel predictors.     

中国农村社会保障改革的路径依赖与制度创新

随着中国农村市场化、工业化和城市化的发展,农村社会保障制度创新已经成为农村改革的焦点。本文在梳理中国农村社会保障制度变迁过程的基础上,分析了中国农村社会保障制度创新路径依赖的历史和文化因素,及其对当前中国农村社会保障制度创新的影响,提出了当前中国农村社会保障制度创新的基本路径,即只有依靠农村土地制度和农村组织制度的创新,逐渐消解城乡二元社会结构,才能进一步推动中国农村社会保障制度创新。     

关注"常态"生活的意义——家庭社会学研究的一个新视角初探

本文从日常生活的"常态"概念入手,认为选择这样一个"常态"作为研究对象对研究家庭社会学是十分有意义的.具体地说,我们认为以被访人的生活史为切入点,去挖掘和揭示制度安排中的"盲点",应该成为家庭社会学研究的一个新的视角.     

加强语言和言语研究 重视言语技能培养

现代语言学家之父Ф.деСоссюр于20世纪初提出两个重要概念——“语言”和“言语”。他认为,人的言语行为分为语言和言语两部分。区分语言和言语有利于研究语言的语言学和言语的语言学。     

诚信的机制构建与目标追求--以博弈论和效益-成本理论为视角

本文采用经济学理论来分析诚信问题.文章指出追求利益最大化是人们违反诚信的根本动因,并从博弈论与效益-成本理论的角度构建社会诚信机制(1)从一次博弈向重复博弈转化;(2)针对一次博弈,文章提出增加诚信者收益,减少不诚信者的收益,从而使主体在博弈后做出诚信的选择.最后,文章从实现社会整体利益的视角,论述了应当追求什么样的诚信.     

试论西藏社会经济跨越式发展的内含、背景及可能性

本文论述了西藏实现社会经济跨越式发展的内含及背景,分析了“跨越式”发展的可能性,提出为了确保使西藏社会经济实现跨越式发展的可能性转化为现实的社会经济实践,必须采取一切必要的措施,加大投资力度,优化投资环境及调整产业结构。     

医学生理学多媒体辅助教学的利与弊

作为辅助教学手段,多媒体技术在高等医学院校医学生理学教学中发挥着重要的作用,有很多传统教学模式不具备的优越性,但是,在使用中也出现了一些问题。为了更好地运用多媒体技术,必须正确认识并发挥它的优势,与传统的教学模式进行互补,从而提高教学质量。     

关于代数体函数的增长与其例外函数个数的关系

设f（z）为n值代数体函数，如果f（z）具有n＋1个Borel例外函数，则f（z）是正规增长的，其级为正整数或无穷。如果f（z）的级ρ（0＜ρ＜∞）不为整数，记P为f（z）的Borel例外函数个数，q为f（z）的亏量等于1的Nevanlinna例外值个数，则P＋q≤n．