排序方式: 共有13条查询结果,搜索用时 78 毫秒
11.
The exponentiated Gumbel model has been shown to be useful in climate modeling including global warming problem, flood frequency analysis, offshore modeling, rainfall modeling, and wind speed modeling. Here, we consider estimation of the probability density function (PDF) and the cumulative distribution function (CDF) of the exponentiated Gumbel distribution. The following estimators are considered: uniformly minimum variance unbiased (UMVU) estimator, maximum likelihood (ML) estimator, percentile (PC) estimator, least-square (LS) estimator, and weighted least-square (WLS) estimator. Analytical expressions are derived for the bias and the mean squared error. Simulation studies and real data applications show that the ML estimator performs better than others. 相似文献
12.
Mahshid Bagheri Siwan Mitchelmore Vassiliki Bamiatzi Konstantinos Nikolopoulos 《Journal of International Management》2019,25(1):121-139
This study examines the relationship between internationalization orientation and international performance of small and medium-sized enterprises (SMEs), and the mediating effect of technological innovation. Prior research suggests that internationalization is a prominent strategic choice for SMEs growth and profitability. However, there is still no explicit agreement on how internationalization affects international performance. Similarly, the role of innovation on performance has long been emphasized, but the implications of technological innovation on international performance are still eluding us. Our investigation of 116 SMEs in the United Kingdom reveals that internationalization orientation has a significant effect on their international performance, with SMEs adopting simultaneously an inward and outward international orientation achieving superior results. We further demonstrate that there is an inverted U-shaped relationship between technological innovation and international firm performance among SMEs. Meanwhile, we find that technological innovation positively mediates the effect of internationalization orientation on international firm performance, particularly for the SMEs exhibiting moderate levels of technological innovation activities. The findings of this study suggest that managers can improve international performance by combining inward and outward internationalization orientation with technological innovation activities in their strategic decisions. 相似文献
13.
Cross‐Cultural Measurement Invariance of Adolescent Self‐Report on the Pediatric Quality of Life Inventory™ 4.0
下载免费PDF全文
![点击此处可从《Journal of research on adolescence》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Dejan Stevanovic Olayinka Atilola Panos Vostanis Yatan Pal Singh Balhara Mohamad Avicenna Hasan Kandemir Rajna Knez Tomislav Franic Petar Petrov João Maroco Zorica Terzic Supic Zahra Bagheri 《Journal of research on adolescence》2016,26(4):687-695
This study evaluated the cross‐cultural measurement invariance of the Pediatric Quality of Life Inventory version 4.0 (PedsQL?) among adolescents sampled from Bulgaria, Croatia, India, Indonesia, Nigeria, Serbia, and Turkey. The multiple‐indicator multiple‐cause (MIMIC) model was used, which allowed controlling of demographic variables (i.e., age, gender, and socioeconomic status). Significant effects of country on scores within the PedsQL? domains were observed, with up to 17 items showing differential item functioning (DIF) across the countries. We did not find support for cross‐cultural measurement invariance hypotheses for scores on the PedsQL? adolescent self‐report in this study. Researchers should use caution in making cross‐cultural quality of life comparisons while using the PedsQL. 相似文献