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This paper deals with the inverse scattering problem of reconstructing the material properties of perfectly conducting or dielectric cylindrical objects. The material properties are reconstructed from measured far‐field scattering data provided by the Electromagnetics Technology Division, AFRL/SNH, 31 Grenier Street, Hanscom AFB, MA 01731‐3010. The measured data have to be calibrated for use in our reconstruction algorithm. The inverse scattering problem formulated as unconstrained nonlinear optimization problem is numerically solved using an iterative scheme with a variable calibration factor which will be determined during the optimization process. Numerical examples show the successful application of the method to the measured data.
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C.J. Huber, W. Rieger, A. Buchau and W.M. Rucker
A boundary element method in terms of the field variables is applied to three‐dimensional electromagnetic scattering problems. Especially, the influence of a dipole excited field…
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A boundary element method in terms of the field variables is applied to three‐dimensional electromagnetic scattering problems. Especially, the influence of a dipole excited field on low conducting materials situated very close to the antenna will be discussed. We use higher order edge elements of quadilateral shape for the field approximation on curved surfaces. The tangential components of the unknown field variables are interpolated by vector element functions. The Galerkin method is implemented to obtain a set of linear equations. The applicability of the proposed edge element is investigated by the comparison of different BEM‐formulations and FEM‐results.
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Chee W. Chow, Kamal M. Haddad and Anne Wu
This study contributes exploratory evidence on the relationships between corporate culture and company size, competitive environment and corporate performance in the U.S. and…
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This study contributes exploratory evidence on the relationships between corporate culture and company size, competitive environment and corporate performance in the U.S. and Taiwan. The findings indicate that environmental uncertainty – one aspect of industry dynamics – failed to uncover any widespread effects of this variable on Taiwanese firms’ corporate culture. In contrast, not only did we find that the corporate cultural aspects most valued differed from country to country, but that they related to corporate performance in different ways.
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Michael Perini and Beth Roszkowski
Undergraduate information commons have become pervasive in the academic library landscape. In recent years, librarians and administrators have come to identify the need for…
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Undergraduate information commons have become pervasive in the academic library landscape. In recent years, librarians and administrators have come to identify the need for comparable commons’ spaces and services for graduate students. This chapter serves as a review of recently developed models of graduate commons—in this discussion referred to as Scholars’ Commons—as defined by an integration of physical learning spaces, personnel, and a dynamic availability of research support services that support assist graduate students throughout their academic life cycle. These provisions serve as the foundation for the development of enhanced library-supported graduate student success.
Still a rare commodity, existing models from selected institutional web sites were examined using a framework for analysis consisting of several criteria: new use of space; segmented services; partnerships; and new organizational structures. Through a synthesis of the commonalities prevalent in these systems, this chapter aims to provide recommendations for prospective Scholars’ Commons models and proposals for their development. Library organizations contemplating the development of a Scholars’ Commons need to consider the needs of their target population, potential new or reallocated spaces, feasibility of providing support and research technologies, and possible staffing models. As well, the authors consider the importance of library-based graduate student support that bolsters cross-divisional collaborative partnerships across the academy.
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Johannes Lohner and Norbert Konrad
This article reviews the international literature of the last two decades on self‐injurious behaviour in prisons and jails and introduces the risk factors associated with this…
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This article reviews the international literature of the last two decades on self‐injurious behaviour in prisons and jails and introduces the risk factors associated with this behaviour. Studies from a variety of countries investigated different samples (e.g. in jails or prisons; female or male inmates). We only chose those studies using a control group of inmates without self‐injurious behaviour. The findings on potential risk factors for self‐injurious behaviour are largely contradictory because of the differences in sample selection and dependent variables (deliberate self‐harm without suicidal intent vs. suicide attempts). We also discuss some methodological problems in predicting self‐injurious behaviour.
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André Buchau, Wolfgang Rieger and Wolfgang M. Rucker
The application of the fast multipole method reduces the computational costs and the memory requirements of the boundary element method from O(N2) to approximately O(N). In this…
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The application of the fast multipole method reduces the computational costs and the memory requirements of the boundary element method from O(N2) to approximately O(N). In this paper we present that the computational costs can be strongly shortened, when the multipole method is not only used for the solution of the system of linear equations but also for the field computation in arbitrary points.
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Teachers are increasingly required to include students with disabilities in mainstream classroom settings. In order to effectively prepare pre-service teachers to address the…
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Teachers are increasingly required to include students with disabilities in mainstream classroom settings. In order to effectively prepare pre-service teachers to address the needs of all students in the classroom, including students with disabilities, teacher-training programs must utilise effective pedagogy. Service-learning has been shown to be an effective pedagogy to employ to address the knowledge/learning needs of pre-service teachers. This chapter will build upon the use of service-learning to increase knowledge and will discuss the importance and practice of also developing positive attitudes towards students with disabilities. The Theory of Planned Behaviour (Azjen, 2002) is utilised as a basis for developing the service-learning program, and exemplifies three main elements as being necessary to bring about behavioural change: behavioural beliefs, normative beliefs and control beliefs. The pre-service teachers described in this chapter are completing a special education specialisation at a tertiary institution, and are required to complete a service-learning unit as a component of the specialisation. Reflection, an important requirement for service-learning programs, allows the researcher to determine if the goals of the program have been met, and how these outcomes relate to the Theory of Planned Behaviour and the potential they may have to bring about behavioural change for the pre-service teachers. Six main themes were identified in the pre-service teacher reflections. These themes were further divided into two main categories: affective (empathy, personal growth, confidence); and cognitive (knowledge, skill development, enhanced professional practice). Links between the pre-service teacher reflections and the Theory of Planned Behaviour suggest that the service-learning experience is beneficial for developing pre-service teachers who are more inclined to address the needs of students with disabilities.
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Distribution research was an important field of research in Germany especially in the 1920s and 50s. After that, the major research interests in the area of marketing and internal…
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Distribution research was an important field of research in Germany especially in the 1920s and 50s. After that, the major research interests in the area of marketing and internal trade shifted to other topics. Retailing and wholesaling institutions became more powerful and new technologies supporting physical distribution activities began to attract researchers to deal with distribution problems. Distribution as treated in this synopsis covers the areas of retailing, wholesaling, industrial selling and physical distribution.
The last 20 years have seen increasing interest in the use of Delphi in a wide range of health‐care applications. However, this use has been accompanied by attempts to codify and…
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The last 20 years have seen increasing interest in the use of Delphi in a wide range of health‐care applications. However, this use has been accompanied by attempts to codify and define a “true Delphi”. Many authors take a narrow view of the purpose of Delphi and/or advocate a single prescriptive approach to the conduct of a Delphi study. However, as early as 1975, Linstone and Turoff pointed to the danger of attempting to define Delphi as one would immediately encounter a study that violated that definition. Through critical examination of some of the controversies and misunderstandings that surround Delphi, this paper aims to dispel some of the myths and demonstrates the wide scope and potential of this versatile approach.
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The paper aims to identify adoption criteria for “revolutionary” business techniques; based on case material, it invites further research.
Abstract
Purpose
The paper aims to identify adoption criteria for “revolutionary” business techniques; based on case material, it invites further research.
Design/methodology/approach
Building on the idea of scientific revolution, three cases from sub-disciplines of business administration are chosen to illicit adoption criteria for business techniques.
Findings
The analysis shows that a logical response to a problem, the availability of a controllable procedure, the software and the means to apply the procedure easily, and the hardware, jointly seem to explain the adoption of “revolutionary” business technologies.
Research limitations/implications
In case analysis in general, the results do not lead to induction. More research might identify additional success criteria. Furthermore, it might lead to determining adoption probabilities of techniques.
Practical implications
Managers being introduced to new techniques in business administration might use the criteria outlined here for their evaluation.
Originality/value
The author believes that the paper sheds new light on the development of business technologies and that this light might guide developers of technologies to come up with more potentially successful technologies.
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