IE University

About: IE University is a education organization based out in Segovia, Castilla y León, Spain. It is known for research contribution in the topics: Corporate governance & Context (language use). The organization has 527 authors who have published 1709 publications receiving 64682 citations.

The Part-Time Pay Penalty in a Segmented Labor Market

Abstract: While much of the literature that investigates the part-time (PT) / full-time (FT) hourly wage differential and its causes focuses on average effects, very few studies analyze the heterogeneous effects of PT work across different subgroups, despite the policy relevance of understanding channels behind the (raw) PT penalty in different labor markets. This paper is the first to examine the implications of switching to PT work for women's subsequent earnings trajectories, distinguishing by their type of contract: permanent or fixed-term. Using a 21-year unbalanced Social Security records panel of over 76,000 prime-aged women strongly attached to the Spanish labor market, we find that PT work aggravates the segmentation of the labor market insofar there is a PT pay penalty and this penalty is larger and more persistent in the case of women with fixed-term contracts. The paper discusses problems arising in empirical estimation, and how to address them. It concludes with policy implications relevant for Continental Europe and its dual structure of employment protection.

Dual-channel competition: the role of quality improvement and price-matching

Abstract: Quality improvement and price-matching are two commonly used competing strategies by the retailers. However, it is still unclear how the retailers should deliberate over the two strategies when selling in both online and offline markets. In this paper, we consider two dual-channel retailers selling a substitutable product to consumers in both online and offline markets. Especially, the retailers compete in the online market, and their offline markets are exclusive to themselves. We establish a game-theoretical model to investigate the trade-off between quality improvement and price-matching in competition, and the impact on retailers' profits and consumer surplus in the dual-channel market structure. The analysis shows that, first, a retailer should choose to improve its quality to avoid price competition when the online market is small; second, when retailers engage in price competition, the retailer with larger offline market is more willing to adopt price-matching, while the retailer with a small share of offline market can be hurt; third, quality improvement can always increase the consumer surplus, while price-matching always hurts consumer surplus due to price collusion. © 2021 Informa UK Limited, trading as Taylor & Francis Group.

La mujer emprendedora en el turismo rural: peculiaridades del caso costarricense a través de la revisión bibliográfica

Abstract: This article analyzes the phenomenon of entrepreneurial women in rural tourism in Costa Rica, framed within the Latin-American and rural entrepreneurship context. Using a systematic literature review, the profile of business-women gets defined through their motivations to start their businesses and the barriers they face. The results show the important similarities between Costa Rican rural tourism entrepreneurs and other female entrepreneurs in Latin America and the world. This study contributes to the knowledge of these entrepreneurs within the framework of rural tourism, essential for the economic development of developing countries.

A meta-grammatical evolutionary process for portfolio selection and trading

Abstract: This study presents the implementation of an automated trading system that uses three critical analyses to determine time-decisions and portfolios for investment. The approach is based on a meta-grammatical evolution methodology that combines technical, fundamental and macroeconomic analysis on a hybrid top-down paradigm. First, the method provides a low-risk portfolio by analyzing countries and industries. Next, aiming to focus on the most robust companies, the system filters the portfolio by analyzing their economic variables. Finally, the system analyzes prices and volumes to optimize investment decisions during a given period. System validation involves a series of experiments in the European financial markets, which are reflected with a data set of over nine hundred companies. The final solutions have been compared with static strategies and other evolutionary implementations and the results show the effectiveness of the proposal.

Making Theoretically Informed Choices in Specifying Panel‐Data Models

Abstract: Author(s): Ketokivi, Mikko; Bromiley, Philip; Awaysheh, Amrou | Abstract: We argue that in analyzing panel-data econometric models, researchers rely excessively on statistical criteria to determine model specification, treating it primarily as a matter of statistical inference. This inferential emphasis is most obvious in the common practice of using statistical tests (e.g., the Hausman test) to choose between fixed- and random-effects specifications, often ignoring the assumptions underpinning these tests. For instance, the Hausman test depends on the true within-panel (longitudinal) and between-panel (cross-sectional) parameters being equal. This assumption is often not justified, because longitudinal and cross-sectional variances and covariances may manifest different underpinning mechanisms. In addition to different mechanisms often resulting in different variables determining within and between effects, within and between variables may also have different meanings. To help researchers make theoretically informed choices, we formulate five questions that can help researchers think of model specification in a theoretically rigorous way. We examine these issues with examples from both the general management and operations management research. Importantly, we argue that addressing the questions regarding model specification must involve primarily theoretical and contextual judgement, not statistical tests.