University of Seville

About: University of Seville is a education organization based out in Seville, Andalucía, Spain. It is known for research contribution in the topics: Population & Model predictive control. The organization has 20098 authors who have published 47317 publications receiving 947007 citations. The organization is also known as: Universidad de Sevilla.

Board Influence on a Firm's Internationalization

Abstract: Manuscript Type: Empirical Research Question/Issues: The resource-based view of the firm may provide the theoretical explanation as to how boards can be a source of firm competitive advantage. Directors' experience, knowledge, expertise are valuable, rare, inimitable and non-substitutable resources that making up the board potential. These resources must be integrated with others firm resources in strategic processes through dynamics of relations. Research Findings/Insights: Given the preliminary nature of this work, the empirical section is an exclusive analysis of the board's potential. Our specific aim is to establish whether resources that directors bring to board are sources of board competence and ability with consequences for international strategic decisions. To do this, we use a sample of 562 board members of 45 listed Spanish companies. Our results show that the average board tenure is negatively related to the firm's degree of international diversification. Directors with long tenures may operate from the basis of routines that are built up over time and their knowledge of the firm could eventually become a less valuable resource. The empirical findings also indicate that the directors' managerial experience within the specific industry to which the firm belongs and a high level of academic achievement, affects the firm's degree of international diversification. Theoretical/Academic Implications: The contribution of this article is three-fold; it emphasizes the role of directors in the board effectiveness, investigating why and how relevant elements of directors' human capital can enhance board ability to perform their roles making up the board potential. Secondly, it refines and extends the concept of "board capability" as an adequate configuration of potential and relationship dynamics that allow board to undertake their task competently over the time. Third, this article stresses the active participation of board in firm internationalization. Practitioner/Policy Implications: One of the important practical implications of these results refers to the selection of board members. In order to increase board effectiveness, in the context of firm internationalization, the selection process must be guided by the search of intangibles, inimitable and unique resources, which the board can capitalize on in order to differentiate its potential over competitors. Keywords: Corporate Governance, Directors' Resources, Board Capability, Board Potential, Internationalization.

Iterative methods for strict pseudo-contractions in Hilbert spaces

Abstract: Let { T i } i = 1 N be N strict pseudo-contractions defined on a closed convex subset C of a real Hilbert space H . Consider the problem of finding a common fixed point of these mappings and consider the parallel and cyclic algorithms for solving this problem. We will prove the weak convergence of these algorithms. Moreover, by applying additional projections, we further prove that these algorithms can be modified to have strong convergence.

Composite Right/Left-Handed Metamaterial Transmission Lines Based on Complementary Split-Rings Resonators and Their Applications to Very Wideband and Compact Filter Design

Abstract: In this paper, we discuss in detail the transmission characteristics of composite right/left-handed transmission lines based on complementary split-rings resonators. Specifically, the necessary conditions to obtain a continuous transition between the left- and right-handed bands (balanced case) are pointed out. It is found that very wide bands can be obtained by balancing the line. The application of this technique to the design of very wideband and compact filters is illustrated by means of two examples. One of them is based on the hybrid approach, where a microstrip line is loaded with complementary split-rings resonators, series gaps, and grounded stubs; the other one is a bandpass filter, also based on a balanced line, but in this case, by using only complementary split-rings resonators and series gaps (purely resonant-type approach). As will be seen, very small dimensions and good performance are obtained. The proposed filters are useful for ultra-wideband systems.