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4.619  Articles
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The traditional models to optimize portfolios based on mean-variance analysis aim to determine the portfolio weights that minimize the variance for a certain return level. The covariance matrices used to optimize are difficult to estimate and ad hoc metho... see more

The use of appropriate rhetorical moves (RMs) and meta-discourse markers (MMs) improve the argumentative and persuasive force of academic texts, such as essays, thesis, seminar papers, and articles. However, authors from a different language background an... see more

Introduction: Progressive peritalar subluxation (PTS) occurs in patients with adult acquired flatfoot deformity (AAFD) and is usually assessed in coronal plane images of the subtalar joint (SJ) posterior facet (PF). In this case control study, we investig... see more

This paper explores and discusses the library and information science (LIS) job market in South Africa through an analytical literature review and the content analysis of recent longitudinal newspaper scanning (2009 - 2012) of LIS job advertisements in th... see more

Eastern cicada killer wasps (Sphecius speciosus Drury) mass-provision underground nest burrows with cicadas they capture and paralyze in nearby trees. We studied provisioning by female cicada killers at 2 aggregations in north Florida where a variety of c... see more

In many countries, relationship between decentralization of government activities and the extent of rent extraction by private parties is an important element in the recent debate on institutional design. The topic of corruption was actively, openly and d... see more

The recent refugee crisis caused by the closure of European borders to political refugees coming from Syria and other war zones represents the culmination of the neoliberal migratory regime and, at the same time, its endpoint. The subordinated and precari... see more

The objective of this short communication is suggested by the labour market that has become very unpredictable and it is difficult to say what it will look like in five, 10 years or even more. New jobs appear, while others disappear. And all this is happe... see more

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