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排序方式: 共有52条查询结果,搜索用时 15 毫秒
1.
Powell Emilia Justyna McDowell Steven Christian O’Brien Robert Oksasoglu Julia 《Constitutional Political Economy》2021,32(3):376-412
Constitutional Political Economy - States embracing Islam-based laws are frequently seen as struggling with establishing democratic institutions, jeopardizing human rights and encouraging executive... 相似文献
2.
di Lorenzo Emilia Piscopo Gabriella Sibillo Marilena Tizzano Roberto 《Decisions in Economics and Finance》2021,44(1):23-35
Decisions in Economics and Finance - In its basic structure, the reverse mortgage (RM) is a contract where a home owner borrows a part or the totality of the future liquidation value of his home at... 相似文献
3.
Piera Centobelli Roberto Cerchione Davide Chiaroni Pasquale Del Vecchio Andrea Urbinati 《Business Strategy and the Environment》2020,29(4):1734-1749
The concept of circular economy is increasingly receiving attention in different domains, including strategic management, operations management, and technology management. It requires companies to design their business model (i.e., the value network, the relationships with the supply chain partners, and the value propositions towards customers) around a new concept of sustainable development that reduces consumption of natural resources and preserves the environment. However, extant research falls short in terms of explaining how companies design their business model according to the circular economy principles. Starting from this premise, the present paper provides a systematic review of the literature on the design of business models in the context of circular economy, aiming to offer an overview of the state of research and outline a promising research agenda. 相似文献
4.
La classica disuguaglianza che definisce la concavità di una funzione: $$f(\alpha x + \bar \alpha y) \geqq \alpha f(x) + \bar \alpha f(y){\mathbf{ }}\bar \alpha = 1 - \alpha$$ può essere generalizzata in due modi:
- ammettendo pesi diversi nei due membri;
- ammettendo medie diverse dall'aritmetica.
5.
Emilia Di Lorenzo 《North American actuarial journal : NAAJ》2013,17(2):49-50
Abstract This paper considers a Sparre Andersen collective risk model in which the distribution of the interclaim time is that of a sum of n independent exponential random variables; thus, the Erlang(n) model is a special case. The analysis is focused on the function φ(u), the expected discounted penalty at ruin, with u being the initial surplus. The penalty may depend on the deficit at ruin and possibly also on the surplus immediately before ruin. It is shown that the function φ(u) satisfies a certain integro-differential equation and that this equation can be solved in terms of Laplace transforms, extending a result found in Lin (2003). As a consequence, a closed-form expression is obtained for the discounted joint probability density of the deficit at ruin and the surplus just before ruin, if the initial surplus is zero. For this formula and other results, the roots of Lundberg’s fundamental equation in the right half of the complex plane play a central role. Also, it is shown that φ(u) satisfies Li’s (2003) renewal equation. Under the assumption that the penalty depends only on the deficit at ruin and that the individual claim amount density is a combination of exponential densities, a closed-form expression for φ(u) is derived. In this context, known results of the Cauchy matrix are useful. Surprisingly, certain results are best expressed in terms of divided differences, a topic deleted from the actuarial examinations at the end of last century. 相似文献
6.
This paper investigates the contribution of gender differences in job mobility to the emergence of a gender wage gap in the Italian labour market. We show that over the first 10 years of labour market experience job mobility accounts for up to 30% of total log wage growth for men and only 8.3% for women, and that this difference is mainly due to differences in returns to mobility. The gender mobility gap is robust to the inclusion of individual, job and firm characteristics, to different ways of accounting for individual unobserved heterogeneity, and is mainly found for voluntary job moves. Looking at the characteristics of the jobs and the firms' workers move to, we find that moves to larger firms represent by far the main source of gender differences in returns to mobility. We offer two possible explanations for this finding; one which involves differences in bargaining behaviour and one which relates to the theory of compensating differentials. 相似文献
7.
Shashi Piera Centobelli Roberto Cerchione Myriam Ertz 《Business Strategy and the Environment》2020,29(3):1215-1246
Resilience has become a crucial topic in the field of strategic management as it requires companies to design resilient business models to tackle managerial and environmental disruptions of individual firms and supply chains. However, extant research still lacks deep insights into how companies design and manage supply chains according to the resilience principles. With this premise, this paper aims at conducting a state of the art review on supply chain resilience (SCR) considering 125 relevant papers collected from Scopus and Web of Science academic search engine. Starting from the results of the literature review, this study proposes a systemic framework of SCR assessment and contributes to improve the understanding of the impact of different empirically tested constructs on the development of the resilience concept. Further, the findings are summarized in several areas including barriers in developing resilience, metrics to measure the resilience performance, and effective strategies to foster the SCR. Finally, this study outlines promising future research directions for scholars and practitioners. 相似文献
8.
Emilia Simeonova 《Atlantic Economic Journal》2009,37(3):279-298
The large and persistent differences in health outcomes between African Americans and whites have sometimes been attributed
to differences in the quality of the facilities in which they receive care. A large body of literature documents systematically
worse performance by facilities which serve a larger share of black patients. However, these estimates may be biased by unobserved
variables which correlate with the racial profile of the clinic and also affect outcomes. This paper uses a unique dataset
from the Department of Veterans’ Affairs system to examine the relationship between the quality of health care and the racial
profile of the patient population in an equal-access health care system. An instrumental variable is used to overcome the
omitted variable bias in the Ordinary Least Squares (OLS) estimates. Both the OLS and IV estimates show that increasing the
proportion of visits by African–American patients results in improved outcomes for all patients treated at the clinic. The
OLS results significantly underestimate the effect of increasing the proportion of black patients. Holding the overall clinic
load constant and adding one hundred outpatient visits by African Americans in a year would result in a 0.5 percentage point
decrease in 1-year mortality for the average patient in the clinic. Thus, contrary to results from the private health care
sector, increasing clinic racial integration in an equal access system would benefit all patients. 相似文献
9.
Klaus G. Grunert Liisa Lähteenmäki Yasemin Boztug Emilia Martinsdóttir Øydis Ueland Annika Åström Piritta Lampila 《Journal of Consumer Policy》2009,32(3):269-287
Health claim perception was investigated by a web-based instrument with a sample of 4,612 respondents in the Nordic countries
(Denmark, Finland, Iceland, Norway, Sweden). Respondents decided which of a pair of claims sounded better, was easier to understand
and was more convincing in their opinion. Claims were constructed from an underlying universe combining different active ingredients
(familiar, unfamiliar), type of claim (combination of information about ingredient, physiological function and health benefit),
framing (positive, negative), and use of qualifier (with, without “may”). Across pairs, the claims differed in the health
benefit addressed (cardiovascular health, dementia, bodyweight). Results showed that respondents could be grouped into two
roughly equally sized classes that differed in the type of claim preferred: one class prefers “long” claims that give the
full story consisting of active ingredient, physiological function and health benefit, whereas the other prefers “short” claims
consisting of the health benefit only. Results also showed that the familiar ingredient is preferred to the unfamiliar one,
whereas effects of positive versus negative framing depended on the type of health benefit addressed. 相似文献
10.
The paper investigates the impact of macroeconomic conditions on the profitability of EU banks by testing for differential effects according to the business model. We group banks into three business models using a hierarchical cluster analysis and find that using clusters based on the share of assets invested in loans reveals heterogeneity in the sensitivity of bank profitability to economic growth across business models. Our main result is that GDP growth, credit growth, and the risk-free yield curve influence profitability as expected, but we also find that the effect of GDP growth is only significant for banks that have a high and medium share of assets invested in loans, and not for banks that hold large portfolios of securities. This difference depends on the impact of growth on asset write downs, especially those on loans and, to a lesser extent, on revenues. The results suggest that studies relating bank profitability to macroeconomic conditions should take the heterogeneity of business models into account. 相似文献