Assessment Adrift: Review of the Current State of Assessment of Academically Based Leadership Education Programs

Assessment is a growing priority among the academy and also appears to be of increasing interest among academic‐based leadership education programs. This article offers a brief history of assessment within higher education as well as an overview of the current state of assessment in the context of academic‐based leadership education programs. While there are numerous studies reporting on assignment‐ and course‐level assessment activities, comparatively limited literature addresses program‐level assessment. It is the author's assertion that we must raise the level of conversation within our emerging discipline to identify effective best practices.     

Maximum Likelihood Estimation of a Labour Demand System. An Application of a Model of Seemingly Unrelated Regression Equations with the Regression Errors Composed of Two Components

Abstract  In this paper maximum likelihood estimation is applied to a system of labour demand equations. In view of the data used for estimation, the model of seemingly unrelated regression equations containing errors composed of two components which has been treated by A very [1] is applied. A very's results are presented and slightly generalized.     

价值工程在套餐式住宅全装修方案选择的应用研究

随着商品房全装修的推广和普及,业主面对菜单式装修选择性价比高的装修方案成为难题。结合装饰装修的特点及日常生活需要,将装修功能分解,并使用专家调查法及层次分析法计算功能权重。业主根据功能权重即可计算出各装修方案的功能值,结合价值工程的原理,就能选择出满意的装修方案。     

使用差价补偿策略的寡头竞争模型

差价补偿策略,是近年来在国内兴起的一种企业间竞争策略。从博弈论角度来看,对消费者承诺差价补偿,即是向竞争对手发出了一种不打价格战的可置信的威胁信号,可以有效地避免企业间的价格竞争;从市场营销角度来看,差价补偿策略会影响消费者行为,改变消费者预期,最终促使市场竞争向着企业有利的方向发展。本文对差价补偿策略建立了一个数学模型,分析企业采用差价补偿策略的原因以及竞争双方博弈的均衡结果。     

一个估计DSGE模型脉冲响应函数的方法

本文获得国家自然基金“具有Markov体制转换的动态因子模型建模方法及其应用研究”(71271142)、天津财经大学研究生科研资助计划“DSGE模型的估计方法研究——基于动态因子模型的视角”(2014TCB04)的资助。     

基于时间序列分析对矿坑涌水量的区间预测

基于时间序列分析建立了矿坑涌水量的模型,通过误差分析做出区间估计,把预测结果表述为区间形式,并提出了模型相对精度的概念。在桃源煤矿矿坑涌水量的预测中,同自回归模型AR(11)对比,该模型将预测精度分别从3.95%和4.35%提高到1.00%和1.44%。     

Effects of Future Demographic Changes on the US Economy: Evidence from a Long-term Simulation Model

Demographics, especially the size and the age composition of the population, contribute substantially to the growth and structure of any economy. Over the next 55 years, the age composition of the US population will change dramatically, as the post-World War II ‘baby boom’ ages into retirement. In this paper, we use a long-term interindustry macro model of the US economy to examine how the age composition of the US population affects overall economic growth as well as the output/employment structure of the economy. We find that the system of funding government commitments to pension and medical care for the elderly is a primary channel through which demographic effects translate into economic effects.     

带未知异方差广义空间模型的有效估计

空间单元大小以及其它的经济特征上的差异,常常会导致空间异方差问题。本文给出了广义空间模型异方差问题的三种不同估计方法。第一种方法是将异方差形式参数化,来克服自由度的不足,使用ML估计进行实现。而针对异方差形式未知时,分别采用了基于2SLS的迭代GMM估计和更加直接的MCMC抽样方法加以解决,特别是MCMC方法表现得更加优美。蒙特卡罗模拟表明,给定异方差形式条件下, ML估计通过异方差参数化的方法依然可以获得较好的估计效果。而异方差形式未知的情况下,另外两种方法随着样本数的增大时也可以与ML的估计结果趋于一致。     

我国电视节目消费主义现象解析

我国电视节目出现了媚俗化娱乐、跟风生产、过分依赖广告等消费主义现象。我们应该正确认识消费主义,建构大众文化的生态消费观,尊重受众、打造绿色品牌,提高经营水平,以期消除电视消费主义的负面影响。     

含空间自回归误差项的空间动态面板模型的有效估计

扰动项的空间过程会影响空间计量模型的估计效果。通过探究空间关联误差效应下空间动态面板数据（SDPD）模型拟极大似然估计（QML）的有限样本性质,发现含空间自回归误差项的SDPD模型大样本性质较好;其估计结果优于不含空间自回归误差项的模型;较强的误差项空间相关性对参数估计精度的影响程度较大;误差项分布偏离正态性会影响模型的估计结果,但模型总体估计的稳健性良好。总体蒙特卡洛结果与本文的理论分析一致。     

Solving Multicollinearity in the Process of Fitting Regression Model Using the Nested Estimate Procedure

In the practical cases, we are usually faced with the more difficult problem of multicollinearity in our fitted regression model. Multicollinearity will arise when there are approximate linear relationships between two or more independent variables. It may cause some serious problems in validation, interpretation, and analysis of the model, such as unstable estimates, unreasonable sing, high-standard errors, and so on. Although there are some methods to solve or avoid this problem, we will propose another alternative from the practical view in this paper, called nested estimate procedure. The first half of the paper explains the concept and process of this procedure, and the second half provides two examples to illustrate this procedure’s suitability and reliability.     

BIM模型视角下建设项目成本与进度控制研究

施工建设项目各个阶段都要关注进度与成本控制。建筑信息模型BIM为有效项目成本与进度控制提供了较为完备的解决方案,实现了项目参与各方的无缝集成。本文通过对项目施工模拟实现,利用综合进展率曲线进行进展控制,利用挣得值法对项目各个成本参数进行评估,以此来实现以进度与成本控制。以利用BIM对某项目进度成本控制进行实证研究,实现项目进度的可视化模拟与成本控制。     

Measurement of the Socioeconomic Impact of Lake Restoration: An Assessment Model Employing a Benefit/Cost Cross-Impact Probabilistic Approach

A bstract . A number of lake restoration demonstraton projects have been launched by the Environmental Protection Agency as a result of Public Law 92-500. To evaluate the cost-effectiveness of these public investment projects requires the development of an assessment model. The proposed Benefit/Cost Cross-Impact Probabilistic Approach (BCCIPA) is one attempt at assessing the interdependent socioeconomic and environmental impacts of the lake restoration project over time, both quantitatively and qualitatively, so that various changes brought about by the project can be investigated and evaluated in two comparative stages for three points in time—before, during and after project implementation.     

EGM96与EGM2008大地水准面模型拟合精度分析

在Trimble Business Center(TBC)软件中分别加载EGM96与EGM2008两种大地水准面模型,通过观测的GPS静态数据,固定一个GPS控制点的水准高程,计算出各点的拟合高程,与四等水准成果进行对比,结果表明EGM2008大地水准面模型精度优于EGM96大地水准面模型。     

GPS在桥梁与隧道工程中拟合模型实例分析

本文结合工程实例数据对比分析两种方法,通过拟合结果可知:当纵横向跨度比较小、地形变化比较平缓时,对于两种拟合方法来说,通常情况下都可以达到三等水准精度;但是三次样条拟合法不适应测区较大、地形条件变化比较复杂的情况,对于移动曲面拟合法来说,通常能够达到等外水准要求,进而在一定程度上满足桥梁工程、隧道工程的施工需要。     

Two Dimensions of Corporate Sustainability Assessment: Towards a Comprehensive Framework

Over the last years, many approaches have emerged that attempt to measure the contribution of firms to sustainable development, i.e. corporate sustainability. Our review of existing methodologies for the assessment of corporate sustainability reveals two major shortcomings. First, value creation as a core condition for sustainability as well as for further contributions to economic sustainability is often ignored in these assessments, suggesting that financial and non‐financial organizational processes are separable. Second, existing approaches fail to differentiate between the actual contribution of a firm to sustainability on the one hand, and governance‐related features aimed at attaining this contribution on the other. We argue that the implementation of sustainability‐oriented organizational structures and managerial instruments alone does not necessarily guarantee sustainability performance. Therefore, besides the dimension of current sustainability performance, we introduce the notion of sustainability governance as a second distinct dimension of corporate sustainability assessment. Copyright © 2011 John Wiley & Sons, Ltd and ERP Environment.     

Flexible Estimation of Copulas: An Application to the US Housing Crisis

Zimmer (‘The role of copulas in the housing crisis’, Review of Economics and Statistics 2012; 94 : 607–620) provides an interesting case study of the pitfalls of using parametric copulas to understand the US housing crisis in the latter part of 2000s. The original study by Zimmer (2012) employs a finite‐mixture copula to illustrate that the symmetry of the Gaussian copula may not be tenable, especially for US housing price data during the time period from 1975:Q2 to 2009:Q1. We undertake a replication of his study in a wide sense. First, we replicate the study by incorporating revised data and then extending the dataset to include the most recent data. Second, we implement a nonparametric copula estimator recently proposed by Racine (‘Mixed data kernel copulas’, Empirical Economics forthcoming) to the parametrically filtered data used in Zimmer (2012). Our replication finds that the application of the nonparametric copula to the same and extended filtered data provides an alternative flexible specification for copulas. However, the overall cautionary message of the flexible‐form copula espoused in Zimmer (2012) remains. Copyright © 2015 John Wiley & Sons, Ltd.     

Doubly Robust Estimation of Causal Effects with Multivalued Treatments: An Application to the Returns to Schooling

This paper provides doubly robust estimators for treatment effect parameters which are defined in a multivalued treatment effect framework. We apply this method to the unique dataset of the 1970 British Cohort Study (BCS70) to estimate returns to various levels of schooling. The analysis is carried out for female and male samples separately to capture possible gender differences. Average returns are estimated for the entire population, as well as conditional on having a specific educational achievement. For males, relative to no qualification, we find an average return to O‐levels of 6.3%, to A‐levels of 7.9% and to higher education of 25.4%. The estimated average returns to O‐level and A‐level relative to no qualification are insignificant for females, whereas the return to higher education is 19.9%.Copyright © 2014 John Wiley & Sons, Ltd.