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We extend Vuong’s (1989) model-selection statistic to allow for complex survey samples. As a further extension, we use an M-estimation setting so that the tests apply to general estimation problems – such as linear and nonlinear least squares, Poisson regression and fractional response models, to name just a few – and not only to maximum likelihood settings. With stratified sampling, we show how the difference in objective functions should be weighted in order to obtain a suitable test statistic. Interestingly, the weights are needed in computing the model-selection statistic even in cases where stratification is appropriately exogenous, in which case the usual unweighted estimators for the parameters are consistent. With cluster samples and panel data, we show how to combine the weighted objective function with a cluster-robust variance estimator in order to expand the scope of the model-selection tests. A small simulation study shows that the weighted test is promising.

Advances in Econometrics is a series of research volumes first published in 1982 by JAI Press. The authors present an update to the history of the Advances in Econometrics series. The initial history, published in 2012 for the 30th Anniversary Volume, describes key events in the history of the series and provides information about key authors and contributors to Advances in Econometrics. The authors update the original history and discuss significant changes that have occurred since 2012. These changes include the addition of five new Senior Co-Editors, seven new AIE Fellows, an expansion of the AIE conferences throughout the United States and abroad, and the increase in the number of citations for the series from 7,473 in 2012 to over 25,000 by 2022.

Garlic supplementation may be inversely contributed to body weight and composition; however, previous results have been inconsistent. This study aims to evaluate the effect of garlic supplementation on body weight and composition using a systematic review and meta-analysis.

Online databases of PubMed, ISI Web of Science, Scopus and Google Scholar were searched up to January 2020. The random-effects model was used to calculate the effect sizes of the included studies. The risk of bias of included studies was assessed using the Cochrane collaboration’s tool. Besides, the NutriGrade scoring system was applied to judge the credibility of the evidence.

In total, 18 studies (with 1,250 participants) were included in the meta-analysis. The pooled analysis revealed that garlic supplementation has a significant increase in body weight [weighted mean difference (WMD) = 0.31 Kg, 95% CI: 0.09, 0.53 Kg, P = 0.005, n = 12 effect sizes]. Waist circumference (WC) does remarkably reduce [WMD = −1.28 cm, 95% CI: −2.08, −0.47 cm, P = 0.002, n = 4 effect size]. However, body mass index, body fat percent and fat-free mass do not dramatically change (P > 0.05). Notably, the pooled analyses on body weight and WC were sensitive to two included studies. NutriGrade’s score was rated low for this meta-analysis.

Although garlic supplementation could slightly increase weight and simultaneously might decrease WC, these associations were not strong enough to corroborate the findings. Also, other anthropometric indices do not significantly change. Further well-designed randomized clinical trial studies are needed to confirm the results.

The current pandemic will introduce many novel policies, adaptations, innovations and procedures by innovative human resource (HR) creativity. In particular, information technology (IT) implementation is a field that needs more significant focus and a wider range of creative interventions. The author would undoubtedly see a more human-focused approach to HR management (HRM) in the post-coronavirus disease 2019 (post-COVID-19) era, where enterprises and workers have had to reinvent themselves in a brief amount of time drastically. Following the nationwide lockdown caused by COVID-19, many companies were pushed to opt for remote working, which presents both difficulties and benefits for workers and employers. So the purpose of this study is to investigate some key consequences resulting from COVID-19’s effect on multiple HRM roles, how technology is empowering and fostering HRM, informative forecasts based on how organizations are coping and finally, the path in the post-pandemic environment.

The COVID-19 epidemic has had a significant effect on every area of the global economy. It has had severe implications for public institutions and raises particular questions for medical schools. The emergence of COVID-19 has disrupted many activities and requires intense and prompt attention from medical educators. So, HR leaders now face the difficult task of managing the interests of workers and their corporations. The outbreak of COVID-19 has proved that this is not just a difficult time but rather a testing time for companies across the globe to check and ensure how swiftly they adapt themselves by thinking and planning differently. An enterprise evolves with nature, and change is unavoidable if performance and productivity are to improve. Changes in structure, technology and priorities are overgrowing, posing big obstacles to leaders. Corporations worldwide have looked to technology to pursue creative solutions to some of the world’s most pressing problems. This study provides a review of articles related to the role of technology in HRM in the COVID-19 period. The analyzed articles are divided into three groups, including articles related to the role of information communication technology, cloud computing and teleworking in HRM in the COVID-19 era. Also, the most important key challenges are collected, and solutions are provided for them.

In times of trouble, authentic leadership shines through. The actions of pioneering HR leaders throughout the COVID-19 epidemic will significantly affect their respective organizations. When COVID-19 expanded around the world, HR agencies made their workers’ health and welfare a top priority. HRM’s long-term sustainability can be dictated by how they deal with the current crisis. Web-based solutions, such as cloud computing, will also address a vital resource allocation gap. It illustrates the possible efficacy of patient-oriented, web-based applications built on result-driven design, which continues to be validated by more testing and assessment. Many studies have emphasized business innovation as a necessity due to changes in the environment and various challenges and requirements facing businesses. The challenge of observing social distance and limiting face-to-face business services is the challenge of the COVID-19 pandemic era.

This study could entail a joint international collaboration initiative among research centers, allowing information about COVID-19 impacts to be shared more easily. It will favor a worldwide policy to find a response to the epidemic but still address cultural and social issues.

The survey concludes that, whenever possible, employers and medicals should explore remote working opportunities in all industries to alleviate uncertainty and improve employee psychological well-being. The facilitating considerations and problems are often addressed in order to supply practical views for developing cloud-based solutions.

This research aims to lead to the advancement of scientific knowledge in the HRM area through the use of IT-based technology. It allows businesses to reinvent HRM techniques to save money and maximize efficiency without compromising their employees’ life quality and well-being. More in-depth studies at various pandemic stages would yield more valuable insights into HRM’s emerging position.