Cournot Competition and Hit-and-Run Entry and Exit in a Teaching Experiment

Instructors can use a computerized experiment to introduce students to imperfect competition in courses on introductory economics, industrial organization, game theory, and strategy and management. In addition to introducing students to strategic thinking in general, the experiment serves to demonstrate that profits of a firm fall as the number of competitors is increased in a market and that firms enter profitable markets. The authors have used the experiment in undergraduate classes on strategy and management as well as in master of business administration courses with great success.     

Portfolio optimization based on GARCH-EVT-Copula forecasting models

This study uses GARCH-EVT-copula and ARMA-GARCH-EVT-copula models to perform out-of-sample forecasts and simulate one-day-ahead returns for ten stock indexes. We construct optimal portfolios based on the global minimum variance (GMV), minimum conditional value-at-risk (Min-CVaR) and certainty equivalence tangency (CET) criteria, and model the dependence structure between stock market returns by employing elliptical (Student-$t$ and Gaussian) and Archimedean (Clayton, Frank and Gumbel) copulas. We analyze the performances of 288 risk modeling portfolio strategies using out-of-sample back-testing. Our main finding is that the CET portfolio, based on ARMA-GARCH-EVT-copula forecasts, outperforms the benchmark portfolio based on historical returns. The regression analyses show that GARCH-EVT forecasting models, which use Gaussian or Student-$t$ copulas, are best at reducing the portfolio risk.     

Change within purchasing and supply management organisations – Assessing the claims from maturity models

It is a wide-held assumption that professional development and change within purchasing and supply management (PSM) organisations can be explained and guided by a maturity model. In this paper the guidance which the maturity model concept offers to understand a PSM organisation's performance is assessed. The methodology is based on the outcomes of a literature review of PSM maturity models, development of an organisational change framework and the learning from three qualitative case studies. An alternative understanding of the development of the PSM organisation is offered through an organisational change framework, composing 1) movement transitions, 2) scalability of change, 3) acceptability of change, and 4) the substantive element of change. The research found that extant PSM maturity models are too rigid for PSM managers to apply, and although maturity models are commonly accepted in PSM literature, in practice, they may produce the opposite effect of what is promised. The PSM maturity models suggest that their application will lead to increased status and influence of PSM within the organisation; expectations that may not be met. PSM organisations’ change processes are subjected to a range of situational and contextual power relations which must be considered in order to advance the specific PSM organisation roles and responsibilities.     

Nonparametric fixed effects model for panel data with locally stationary regressors

We develop methods for inference in nonparametric time-varying fixed effects panel data models that allow for locally stationary regressors and for the time series length $T$ and cross-section size $N$ both being large. We first develop a pooled nonparametric profile least squares dummy variable approach to estimate the nonparametric function, and establish the optimal convergence rate and asymptotic normality of the resultant estimator. We then propose a test statistic to check whether the bivariate nonparametric function is time-varying or the time effect is separable, and derive the asymptotic distribution of the proposed test statistic. We present several simulated examples and two real data analyses to illustrate the finite sample performance of the proposed methods.     

师专英语教育专业综合英语课程改革与创新实践

综合英语作为英语教育专业基础核心课程,对于高质量地完成既定的人才培养目标有重要作用。师专在培养目标、学制、生源等方面与本科院校有较大差异,因此应对现有教学内容进行整合与重构、对教学方式进行改革与创新,体现师专培养特色,实现人才培养目标。     

吉林省高校速度轮滑课的教学现状分析及对策研究

速度轮滑运动因具有健身性、趣味性的运动特点,深受吉林省高校学生欢迎,近几年来逐渐成为高校体育教学的热门课程和学生喜爱的一项课外活动。然而,速度轮滑运动自从在吉林省高校体育教学中开展以来,尚未得到足够重视,其独特的优势也没有被充分发挥。对此项运动在吉林省高校体育教学开展过程中存在的相关问题进行分析,可以为吉林省高校更好地发展速度轮滑运动提供指导依据。     

四、六级网考环境下的大学英语教学

四、六级网考是一种基于听力的考试,采用知名英语媒体播出的音频和视频材料,增设了口语测试,以测试学生的综合语言能力为目的,考试过程具有不可逆性。这种考试要求学校在教学硬件上有更大的投入,在教材、教学大纲、课堂教学形式、学生课后练习安排等方面要有所调整,尤其对考生的听力提出了更高的要求。因此,学校必须优化教学配置,开放教学资源;教师必须调整教学内容,创新教学模式;学生则应努力提高自主学习能力,适应网考的新形势。     

高职院校教学系部目标管理绩效考核初探

从当前高职院校教学系部发展的自身规律出发,将目标管理引入系部绩效考核工作,不仅有利于提高系部的教学质量和管理效率,还有利于推动高职院校整体办学实力和竞争力的不断提升。     

基于过程导向的高职会计模块化实践教学体系的构建

将工作导向理论、模块化教学理论导入高职会计实践教学,有利于克服目前高职会计实践教学存在的问题。文章就高职会计过程导向模块化实践教学体系的构建进行了论述。     

影子训练法在大学英语听力教学中的应用

将同声传译的基本训练方法影子训练法应用到英语听力教学中,可以通过具体语言信息的听辨和具体图式的应用,选择合适的听力材料,提高学生的听力水平。