M. Di Gifico, P. Nali and S. Brischetto
Finite elements for the analysis of multilayered plates subjected to magneto‐electro‐elastic fields are developed in this work. An accurate description of the various field…
Abstract
Finite elements for the analysis of multilayered plates subjected to magneto‐electro‐elastic fields are developed in this work. An accurate description of the various field variables has been provided by employing a variable kinematic model which is based on the Unified Formulation, UF. Displacements, magnetic and electric potential have been chosen as independent unknowns. Equivalent single layer and layer‐wise descriptions have been accounted for. Plate models with linear up to fourth‐order distribution in the thickness direction have been compared. The extension of the principle of virtual displacements to magneto‐electro‐elastic continua has been employed to derive finite elements governing equations. According to UF these equations are presented in terms of fundamental nuclei whose form is not affected by kinematic assumptions. Results show the effectiveness of the proposed elements as well as their capability, by choosing appropriate kinematics, to accurately trace the static response of laminated plates subject to magneto‐electro‐elastic fields.
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E. Carrera, S. Brischetto, C. Fagiano and P. Nali
Finite Elements FE based on the Reissner’s Mixed Variational Theorem RMVT, for the analysis of multilayered plates subjected to magneto‐electro‐elastic MEE fields, are developed…
Abstract
Finite Elements FE based on the Reissner’s Mixed Variational Theorem RMVT, for the analysis of multilayered plates subjected to magneto‐electro‐elastic MEE fields, are developed in this work. Accurate description of the various field variables has been provided by employing a variable kinematic model which is based on the Carrera’s Unified Formulation CUF. Displacements, transverse shear/normal stresses, magnetic and electric potentials have been chosen as independent unknowns. Interlaminar continuity of mechanical variables is “a priori” guaranteed by the RMVT application. Layer‐wise plate elements with linear up to fourth order distribution in the thickness direction have been compared. FE governing equations, according to CUF, are presented in terms of fundamental nuclei whose form is not affected by kinematic assumptions. Results show the effectiveness of the proposed elements, the superiority of mixed FEs with respect to the classical ones, as well as their capability, by choosing appropriate kinematics, to accurately trace the static response of laminated plates subject to magneto‐electro‐elastic fields.
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AFTER the trenchant paper by Mr. A. O. Jennings, read at the Brighton meeting of the Library Association, and the very embarrassing resolution which was carried as a result, one…
Abstract
AFTER the trenchant paper by Mr. A. O. Jennings, read at the Brighton meeting of the Library Association, and the very embarrassing resolution which was carried as a result, one can only approach the subject of the commonplace in fiction with fear and diffidence. It is generally considered a bold and dangerous thing to fly in the face of corporate opinion as expressed in solemn public resolutions, and when the weighty minds of librarianship have declared that novels must only be chosen on account of their literary, educational or moral qualities, one is almost reduced to a state of mental imbecility in trying to fathom the meaning and limits of such an astounding injunction. To begin with, every novel or tale, even if but a shilling Sunday‐school story of the Candle lighted by the Lord type is educational, inasmuch as something, however little, may be learnt from it. If, therefore, the word “educational” is taken to mean teaching, it will be found impossible to exclude any kind of fiction, because even the meanest novel can teach readers something they never knew before. The novels of Emma Jane Worboise and Mrs. Henry Wood would no doubt be banned as unliterary and uneducational by those apostles of the higher culture who would fain compel the British washerwoman to read Meredith instead of Rosa Carey, but to thousands of readers such books are both informing and recreative. A Scots or Irish reader unacquainted with life in English cathedral cities and the general religious life of England would find a mine of suggestive information in the novels of Worboise, Wood, Oliphant and many others. In similar fashion the stories of Annie Swan, the Findlaters, Miss Keddie, Miss Heddle, etc., are educational in every sense for the information they convey to English or American readers about Scots country, college, church and humble life. Yet these useful tales, because lacking in the elusive and mysterious quality of being highly “literary,” would not be allowed in a Public Library managed by a committee which had adopted the Brighton resolution, and felt able to “smell out” a high‐class literary, educational and moral novel on the spot. The “moral” novel is difficult to define, but one may assume it will be one which ends with a marriage or a death rather than with a birth ! There have been so many obstetrical novels published recently, in which doubtful parentage plays a chief part, that sexual morality has come to be recognized as the only kind of “moral” factor to be regarded by the modern fiction censor. Objection does not seem to be directed against novels which describe, and indirectly teach, financial immorality, or which libel public institutions—like municipal libraries, for example. There is nothing immoral, apparently, about spreading untruths about religious organizations or political and social ideals, but a novel which in any way suggests the employment of a midwife before certain ceremonial formalities have been executed at once becomes immoral in the eyes of every self‐elected censor. And it is extraordinary how opinion differs in regard to what constitutes an immoral or improper novel. From my own experience I quote two examples. One reader objected to Morrison's Tales of Mean Streets on the ground that the frequent use of the word “bloody” made it immoral and unfit for circulation. Another reader, of somewhat narrow views, who had not read a great deal, was absolutely horrified that such a painfully indecent book as Adam Bede should be provided out of the public rates for the destruction of the morals of youths and maidens!
Yassine Khalfi, Bachir Bouiadjra and Mawloud Titah
This paper introduces a closed-form solution for analyzing the buckling behavior of orthotropic plates using a refined plate theory with four variable parameters, leveraging a new…
Abstract
Purpose
This paper introduces a closed-form solution for analyzing the buckling behavior of orthotropic plates using a refined plate theory with four variable parameters, leveraging a new hyperbolic shear displacement model.
Design/methodology/approach
The proposed theory incorporates a quadratic variation of transverse shear strains across the plate’s thickness and satisfies zero traction boundary conditions on both the upper and lower surfaces without employing shear correction factors. The governing equations are derived from the principle of minimum total potential energy. Closed-form solutions for rectangular plates, with two opposite edges simply supported and the remaining two edges subjected to arbitrary boundary conditions, are obtained using the state space approach to the Levy-type solution. Comparative studies are conducted to validate the accuracy of the obtained results.
Findings
The paper successfully examines and discusses in detail the effects of boundary conditions, loading conditions, variations in modulus ratio and thickness ratio on the critical buckling load of orthotropic plates.
Originality/value
This study presents a novel and precise method for evaluating the buckling behavior of orthotropic plates. The refined plate theory, without the need for shear correction factors, offers significant insights and improvements in understanding the critical buckling load under various conditions, contributing valuable knowledge to the field of structural analysis.
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Yaw A. Debrah and Ian G. Smith
Presents over sixty abstracts summarising the 1999 Employment Research Unit annual conference held at the University of Cardiff. Explores the multiple impacts of globalization on…
Abstract
Presents over sixty abstracts summarising the 1999 Employment Research Unit annual conference held at the University of Cardiff. Explores the multiple impacts of globalization on work and employment in contemporary organizations. Covers the human resource management implications of organizational responses to globalization. Examines the theoretical, methodological, empirical and comparative issues pertaining to competitiveness and the management of human resources, the impact of organisational strategies and international production on the workplace, the organization of labour markets, human resource development, cultural change in organisations, trade union responses, and trans‐national corporations. Cites many case studies showing how globalization has brought a lot of opportunities together with much change both to the employee and the employer. Considers the threats to existing cultures, structures and systems.
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She Li, Xiangyang Cui and Gang Wang
The purpose of this paper is to apply the element decomposition method (EDM) in the study of the bending and vibration properties of plate and shell.
Abstract
Purpose
The purpose of this paper is to apply the element decomposition method (EDM) in the study of the bending and vibration properties of plate and shell.
Design/methodology/approach
In the present method, each quadrilateral element is first divided into four sub-triangular cells, and the local strains are obtained in those sub-triangles based on linear interpolation. The whole strain filed is formulated through a weighted averaging operation of local strains, implying that only one integration point is adopted to construct the stiffness matrix. To reduce the instability of one-point integration and increase the accuracy of the present method, a stabilization item of the stiffness matrix is formulated by variance of the local strains. A mixed interpolated tensorial components (MITC) method is used in eliminating the shear locking phenomenon.
Findings
The novel EDM based on linear interpolation is effective in bending and vibration analyses of plate and shell, and the present method used in practical problems is reliable for static and free vibration analysis.
Originality/value
This method eliminated the instability of one-point integration and increased the accuracy by a stabilization item and performed stably in engineering analysis including large-scale problems of vehicle components.
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Salima Hamouche, Shaker Bani-Melhem, Ahmet Demir and Christiane Liliane Kammogne
Crises significantly affect the “people” dimension of the triple bottom line, disrupting careers through economic consequences, reducing organizational trust and altering career…
Abstract
Purpose
Crises significantly affect the “people” dimension of the triple bottom line, disrupting careers through economic consequences, reducing organizational trust and altering career choices. Entrepreneurial careers may emerge as an alternative to secure income and career control. Crises can generate career shocks, prompting transitions from traditional employment to entrepreneurship. This study aims to investigate how crises influence career transitions, particularly entrepreneurial intentions, focusing on the effects of layoffs, job insecurity and perceived employability during COVID-19. It explores both direct and indirect impacts of these factors through career shock, contributing to career and entrepreneurship research.
Design/methodology/approach
Cross-sectional data were collected in the United Arab Emirates (UAE) using snowball sampling during the COVID-19 health crisis. The final sample consisted of 211 working individuals. An online questionnaire was distributed to participants. The study hypotheses were tested using Partial Least Squares (PLS) analysis conducted with SmartPLS 3.0.
Findings
The obtained results showed that the layoff of others, job insecurity and low perceived employability are significantly associated with career shock. And that career shock mediates the relationship between these variables and entrepreneurial intention in times of crisis, except for job insecurity.
Practical implications
This research provides insights for employees, managers, organizations and policymakers. It is necessary to carefully address employee expectations and experiences to identify career decisions resulting from career shocks and determine the needed interventions and support.
Originality/value
Very few studies examined the relationship between career shock and entrepreneurial intention. This cannot help human resources management practitioners understand how career shock can trigger the transition from paid employment to an entrepreneurial career. This study broadens the scope of research on human resource management, entrepreneurship and career by examining the direct effects of layoff, job insecurity and perceived employability on career shock as well as on entrepreneurial intention, in addition to their direct effects on the latter through career shock during a crisis.
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Globalisation is generally defined as the “denationalisation of clusters of political, economic, and social activities” that destabilize the ability of the sovereign State to…
Abstract
Globalisation is generally defined as the “denationalisation of clusters of political, economic, and social activities” that destabilize the ability of the sovereign State to control activities on its territory, due to the rising need to find solutions for universal problems, like the pollution of the environment, on an international level. Globalisation is a complex, forceful legal and social process that take place within an integrated whole with out regard to geographical boundaries. Globalisation thus differs from international activities, which arise between and among States, and it differs from multinational activities that occur in more than one nation‐State. This does not mean that countries are not involved in the sociolegal dynamics that those transboundary process trigger. In a sense, the movements triggered by global processes promote greater economic interdependence among countries. Globalisation can be traced back to the depression preceding World War II and globalisation at that time included spreading of the capitalist economic system as a means of getting access to extended markets. The first step was to create sufficient export surplus to maintain full employment in the capitalist world and secondly establishing a globalized economy where the planet would be united in peace and wealth. The idea of interdependence among quite separate and distinct countries is a very important part of talks on globalisation and a significant side of today’s global political economy.
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Blanca Suarez-Bilbao, Maike Andresen, Marian Crowley-Henry and Edward P. O'Connor
Externalities influence the career trajectories of self-initiated expatriates (SIEs) and their respective career crafting. This study aims to explore the international career…
Abstract
Purpose
Externalities influence the career trajectories of self-initiated expatriates (SIEs) and their respective career crafting. This study aims to explore the international career crafting of SIEs (encompassing their proactive career reflection and construction), taking the combined external influences of complexity, chance and change into consideration.
Design/methodology/approach
The authors employ a qualitative (interpretative) approach, combining career crafting and the chaos theory of careers (CTC) to further understand, from an individual standpoint, the impact of externalities on the career crafting strategies of 24 SIEs who have relocated within the European Union.
Findings
The authors show that SIEs' proactively craft their careers to varying degrees and with varying frequency. The CTC – incorporating complexity, chance and change – allows for a more nuanced understanding of SIEs' career crafting.
Originality/value
This paper applies the concept of career crafting to an international context, exploring the impact of externalities on SIEs' careers. In this way, the authors combine two previously separate theories, extend the application of career crafting to an international career context and emphasise the role of temporality and the whole-life view of career in SIEs’ career crafting approach.
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Outlines the ideas incorporated in “development economics” and criticizes the lack of distinction made by some writers between development and economic growth. Asks whether…
Abstract
Outlines the ideas incorporated in “development economics” and criticizes the lack of distinction made by some writers between development and economic growth. Asks whether underdeveloped countries really need a different economic theory from Western Europe and suggests that growth (in gross national product) and development (i.e. structural change) are actually complementary processes. Reviews various theories on the causes of underdevelopment (e.g. market failure, government failure) and strategies to cure it (e.g. government intervention, private initiative, market mechanism); and cites some examples of successful positive intervention.