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181.
Repeated measurement designs are widely used in medicine, pharmacology, animal sciences, and psychology. In this paper the works of Iqbal and Tahir (2009) and Iqbal, Tahir, and Ghazali (2010) are generalized for the construction of circular-balanced and circular strongly balanced repeated measurements designs through the method of cyclic shifts for three periods. 相似文献
182.
183.
Ali Aghamohammadi 《Statistical Methods and Applications》2018,27(1):91-108
Existing literature on quantile regression for panel data models with individual effects advocates the application of penalization to reduce the dynamic panel bias and increase the efficiency of the estimators. In this paper, we consider penalized quantile regression for dynamic panel data with random effects from a Bayesian perspective, where the penalty involves an adaptive Lasso shrinkage of the random effects. We also address the role of initial conditions in dynamic panel data models, emphasizing joint modeling of start-up and subsequent responses. For posterior inference, an efficient Gibbs sampler is developed to simulate the parameters from the posterior distributions. Through simulation studies and analysis of a real data set, we assess the performance of the proposed Bayesian method. 相似文献
184.
An Integrated Methodology for Assessment and Selection of the Project Risk Response Actions 总被引:1,自引:0,他引:1
In a systematic process of project risk management, after risk assessment is implemented, the risk analysts encounter the phase of assessment and selection of the project risk response actions (RA). As indicated by many researchers, there are less systematic and well-developed solutions in the area of risk response assessment and selection. The present article introduces a methodology including a modeling approach with the objective of selecting a set of RA that minimizes the undesirable deviation from achieving the project scope. The developed objective function comprises the three key success criteria of a project, namely, time, quality, and cost. Our model integrates overall project management into the project risk response planning (P2RP). Furthermore, the proposed model stresses on an equivalent importance for both "risk" and "response." We believe that applying the proposed model helps the project risk analyst in most effective and efficient manner dealing with his or her complicated RA selection problems. The application of the proposed model was implemented in projects in the construction industry in which it showed tremendous time, cost, and quality improvements. 相似文献
185.
Abdelkader Gheriballah Ali Laksaci Rachida Rouane 《Journal of statistical planning and inference》2010
In this paper, we investigate a nonparametric robust estimation for spatial regression. More precisely, given a strictly stationary random field Zi=(Xi,Yi)i∈NNN≥1, we consider a family of robust nonparametric estimators for a regression function based on the kernel method. Under some general mixing assumptions, the almost complete consistency and the asymptotic normality of these estimators are obtained. A robust procedure to select the smoothing parameter adapted to the spatial data is also discussed. 相似文献
186.
Ali Eryilmaz 《Social indicators research》2012,107(3):561-574
Subjective well-being is as important for adolescents as it is in other stages of life. This study thus aims to develop a model for subjective well-being, which is limited to need satisfaction in adolescence and reasons for living, and to test the validity of the model. Participants were a total of 227 individuals, 120 females and 107 males. Data for the study were collected by using the Scale for Basic Need Satisfaction in General, Reasons for Living Inventory, Life Satisfaction Scale and Positive?CNegative Affect Scale. The data were analyzed by using the structural equation model. The results showed that, in the model developed, the effects of need satisfaction and reasons for living on subjective well-being were significant and direct; those of reasons for living were significant and indirect; and the total effects of variables were significant. It was thus concluded that the model presented here can be used to increase adolescents?? subjective well-being. The results are discussed in light of the literature on subjective well-being and within the context of adolescence as a life stage. 相似文献
187.
188.
This study investigates the effect of workers' remittances and its volatility on economic growth of five South Asian countries by employing long time series data from 1975 to 2009. Cointegration results confirm a significant positive long run relationship between remittances and economic growth in India, Bangladesh, Sri Lanka and Nepal, but a significant negative relationship in Pakistan. Conversely, the volatility of workers' remittances has a negative and significant effect on economic growth in Pakistan, Indian, Bangladesh and Sri Lanka, but a negative but insignificant impact in Nepal. All sensitivity analyses confirm that the results are robust. A less volatile inflow of workers' remittances is growth‐enhancing for all countries. It is suggested that policy makers should make policies to reduce the transaction cost to welcome remittances into the region. Furthermore, countries like Pakistan should make the policies to discourage voluntary unemployment.
Policy Implications
- This study show the positive effect of remittances on economic growth in India, Bangladesh, Sri‐Lanka and Nepal. These countries should create friendly policies to reduce the transaction cost to ensure the continuous inflows of workers' remittances.
- Results indicate a negative effect of remittances on economic growth in Pakistan. Remittances are considered an uninterrupted source of income, which may increase voluntary unemployment, leading to decreased economic growth. The government should make policies to discourage this voluntary unemployment.
- Policymakers should create effective systems to ensure this inflow comes through formal financial channels for better control.
189.
190.
Ali Jinnah 《统计学通讯:模拟与计算》2017,46(6):4348-4355
In this article, we apply the empirical likelihood method to make inference on the bivariate survival function of paired failure times by estimating the survival function of censored time with the Kaplan–Meier estimator. Adjusted empirical likelihood (AEL) confidence intervals for the bivariate survival function are developed. We conduct a simulation study to compare the proposed AEL method with other methods. The simulation study shows the proposed AEL method has better performance than other existing methods. We illustrate the proposed method by analyzing the skin graft data. 相似文献