排序方式: 共有16条查询结果,搜索用时 15 毫秒
1.
2.
Ali Sina Önder 《The German Economic Review》2017,18(4):516-522
I provide a brief discussion of the Handelsblatt ranking by focusing on its journal quality weights. I summarize the methodology underlying journals’ prestige measure, which is derived from their citation networks, and discuss its strengths and shortcomings. Although I agree that Handelsblatt ranking provides a great service to the profession, that same profession needs to be rather careful not to overemphasize the journal quality weights. 相似文献
3.
图像增强是数字图像处理的最基本的方法之一,本文总结了图像增强的基本理论,并对新的图像增强的方法作了简单介绍。 相似文献
4.
Pezhman Hatamifar Alireza Darban Astane Mohammad Reza Rezvani 《Journal of Quality Assurance in Hospitality & Tourism》2018,19(2):172-191
ABSTRACTHotels, as one of the major tourism service providers, must offer high quality products to survive in this severely competitive environment so that they can preserve their competitive advantage dealing with other competitors. Therefore, considering the high importance of this subject, this study aims to analyze the quality of hotels supply chain in Isfahan- Iran. On this account, the literature of quality in supply chain is reviewed and seven factors affecting the supply chain are identified. Then research hypotheses are raised in accordance with the seven factors. Data was gathered using questionnaire and Partial Least Square was applied in order to analyze the data. The obtained results indicate that focus on customer, supply chain quality leadership, supply chain quality strategies, supply chain quality information and process approach results in an increase in supply chain quality; meanwhile, the two hypotheses regarding supplier quality management and human resources development of supply chain are rejected. The results of this article will be beneficial to hotels which want to increase the level of their service quality. 相似文献
5.
6.
Sina Tutsch 《Quantitative Finance》2013,13(8):833-843
In the first part of the paper we investigate the properties that describe the intertemporal structure of dynamic convex risk measures. The usual backward approach to dynamic risk assessment leads to strong and weak versions of time consistency. As an alternative, we introduce a forward approach of consecutivity. In the second part we discuss the problem of how to update a convex risk measure when new information arrives. We analyse to what extent the above properties are appropriate update criteria. 相似文献
7.
Sina Badreddine Emilios C. Galariotis Phil Holmes 《Journal of International Financial Markets, Institutions & Money》2012,22(3):589-608
Considerable evidence from many countries suggests momentum strategies generate profits. These have been difficult to rationalise and evidence on the sources of such profitability is inconclusive. We utilise a sample of optioned stocks, characterised by high liquidity, high market capitalisation and fewer short sales constraints and compare results with control samples of non optioned stocks chosen on the basis of market value, turnover and bid–ask spread. The sample characteristics, and the fact that derivatives improve the impounding of information into prices, enable us to draw conclusions about the causes of momentum profits. While we find that short sales constraints are not the major driver of profitability and that most momentum profits disappear using two transactions costs measures of the bid–ask spread, one not previously used, the persistence of some momentum profits indicates that the market underreacts even to the most publicly available information. 相似文献
8.
9.
Recent trends in the German food sector have shifted and segmented consumer consumption motives toward indulgence, quality, and sustainability. Simultaneously, in Western countries there has been a change in luxury consumption motives, shifting emphasis to hedonism, self-actualization, and quality instead of prestige. These parallel developments give rise to the question of how food is related to luxury. This study investigates the perceived dimensions of luxury food and outlines a number of segmented consumer groups based on these dimensions. By means of principal component and cluster analyes, seven dimensions were revealed, which generated four consumer segments. Six of the perceived dimensions of luxury food correspond to those that are found within general luxury goods and services. Sustainability and authenticity form a further dimension, mirroring new luxury values. In the cluster analysis, two segments can be identified as target groups for classic premium foods, whereby one group is predominated by new luxury values and the other is expected to buy lower-quality food. 相似文献
10.
Muhammad Azeem Qureshi Sina Kirkerud Kim Theresa Tanveer Ahsan 《Business Strategy and the Environment》2020,29(3):1199-1214
Using a large panel data set comprising 812 listed European firms, this study investigates whether sustainability disclosure (environmental, social, and governance) and female representation on boards affect firm value. We observe a positive impact of sustainability disclosure and board gender diversity on firm value, suggesting that the best management practices, enhanced stakeholder trust, and female representation on boards improve firm value. We observe that the firms in sensitive industries achieve superior social and governance performance. We also observe that the firms with higher female representation on their boards present significantly superior environmental, social, and governance performance. Our results are robust to different firm and country specific control variables and to year‐ and country‐fixed effects. 相似文献