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1 – 10 of 18
Article
Publication date: 7 March 2008

Ştefan Nagy, Teodor Leuca and Claudiu Mich‐Vancea

This paper aims to present a numeric modeling of the electromagnetic and thermal phenomena for the non‐ferromagnetic alloys casting equipment that control the solidification…

Abstract

Purpose

This paper aims to present a numeric modeling of the electromagnetic and thermal phenomena for the non‐ferromagnetic alloys casting equipment that control the solidification structure's formation.

Design/methodology/approach

The paper uses a numerical modeling program for the controlled solidification process modeling to allow visualization of the thermal field variation.

Findings

The probes cast using this method will have a uniform structure, without micro‐fissures. If the solid's part growth of the molten is controlled, we can stop the process that creates solidification centers, thus the material structure will be homogenous. A solution for this matter is given by the control of the solidification structure using forced heating of the liquid part with eddy currents and forced cooling of the solid part. The evolution of the area with eddy currents and the cooled one controls the phase transformation.

Originality/value

The paper presents a procedure to solve the coupled electromagnetic and thermal field problem in the casting systems techniques: solidification with controlled phase variation layer.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 27 no. 2
Type: Research Article
ISSN: 0332-1649

Keywords

Article
Publication date: 14 September 2010

Ştefan Nagy, Teodor Leuca and Claudiu Mich

The purpose of this paper is to present the numerical modeling of the coupled electromagnetic and thermal fields for the controlled solidification process of non‐ferrous alloys.

Abstract

Purpose

The purpose of this paper is to present the numerical modeling of the coupled electromagnetic and thermal fields for the controlled solidification process of non‐ferrous alloys.

Design/methodology/approach

The paper uses a numerical modeling program for the controlled solidification process modeling to allow visualization of the model and collection of the data. The data are then processed using spreadsheets in order to obtain graphic representations for the variations of the measured values.

Findings

The probes cast using this method will have a uniform structure, without micro‐fissures. If the solid part growth of the molten is controlled, the process can be stopped that creates solidification centers, thus the material structure will be homogenous. A solution for this matter is given by the control of the solidification structure using forced heating of the liquid part with eddy currents and forced cooling of the solid part. The evolution of the area with eddy currents and the cooled one controls the phase transformation.

Originality/value

It is presented here a computation method for the thermal field diffusion and the results of the numerical modelling of the thermal and electromagnetic fields during casting process with controlled solidification layer for the non‐ferrous alloys.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 29 no. 5
Type: Research Article
ISSN: 0332-1649

Keywords

Article
Publication date: 25 February 2020

Isabella Seeber, Lena Waizenegger, Stefan Seidel, Stefan Morana, Izak Benbasat and Paul Benjamin Lowry

This article reports the results from a panel discussion held at the 2019 European Conference on Information Systems (ECIS) on the use of technology-based autonomous agents in…

2436

Abstract

Purpose

This article reports the results from a panel discussion held at the 2019 European Conference on Information Systems (ECIS) on the use of technology-based autonomous agents in collaborative work.

Design/methodology/approach

The panelists (Drs Izak Benbasat, Paul Benjamin Lowry, Stefan Morana, and Stefan Seidel) presented ideas related to affective and cognitive implications of using autonomous technology-based agents in terms of (1) emotional connection with these agents, (2) decision-making, and (3) knowledge and learning in settings with autonomous agents. These ideas provided the basis for a moderated panel discussion (the moderators were Drs Isabella Seeber and Lena Waizenegger), during which the initial position statements were elaborated on and additional issues were raised.

Findings

Through the discussion, a set of additional issues were identified. These issues related to (1) the design of autonomous technology-based agents in terms of human–machine workplace configurations, as well as transparency and explainability, and (2) the unintended consequences of using autonomous technology-based agents in terms of de-evolution of social interaction, prioritization of machine teammates, psychological health, and biased algorithms.

Originality/value

Key issues related to the affective and cognitive implications of using autonomous technology-based agents, design issues, and unintended consequences highlight key contemporary research challenges that allow researchers in this area to leverage compelling questions that can guide further research in this field.

Article
Publication date: 14 March 2024

Marcel Peppel, Stefan Spinler and Matthias Winkenbach

The e-commerce boom presents new challenges for last-mile delivery (LMD), which may be mitigated by new delivery technologies. This paper evaluates the impact of mobile parcel…

Abstract

Purpose

The e-commerce boom presents new challenges for last-mile delivery (LMD), which may be mitigated by new delivery technologies. This paper evaluates the impact of mobile parcel lockers (MPL) on costs and CO2 equivalent (CO2e) emissions in existing LMD networks, which include home delivery and shipments to stationary parcel lockers.

Design/methodology/approach

To describe customers’ preferences, we design a multinomial logit model based on recipients’ travel distance to pick-up locations and availability at home. Based on route cost estimation, we define the operating costs for MPLs. We devise a mathematical model with binary decision variables to optimize the location of MPLs.

Findings

Our study demonstrates that integrating MPLs leads to additional cost savings of 8.7% and extra CO2e emissions savings of up to 5.4%. Our analysis of several regional clusters suggests that MPLs yield benefits in highly populous cities but may result in additional emissions in more rural areas where recipients drive longer distances to pick-ups.

Originality/value

This paper designs a suitable operating model for MPLs and demonstrates environmental and economic savings. Moreover, it adds recipients’ availability at home to receive parcels improving the accuracy of stochastic demand. In addition, MPLs are evaluated in the context of several regional clusters ranging from large cities to rural areas. Thus, we provide managerial guidance to logistics service providers how and where to deploy MPLs.

Details

International Journal of Physical Distribution & Logistics Management, vol. 54 no. 4
Type: Research Article
ISSN: 0960-0035

Keywords

Content available
Article
Publication date: 11 November 2013

192

Abstract

Details

International Journal of Manpower, vol. 34 no. 8
Type: Research Article
ISSN: 0143-7720

Article
Publication date: 9 November 2012

George K. Stylios

Examines the seventeenth published year of the ITCRR. Runs the whole gamut of textile innovation, research and testing, some of which investigates hitherto untouched aspects…

1156

Abstract

Examines the seventeenth published year of the ITCRR. Runs the whole gamut of textile innovation, research and testing, some of which investigates hitherto untouched aspects. Subjects discussed include cotton fabric processing, asbestos substitutes, textile adjuncts to cardiovascular surgery, wet textile processes, hand evaluation, nanotechnology, thermoplastic composites, robotic ironing, protective clothing (agricultural and industrial), ecological aspects of fibre properties – to name but a few! There would appear to be no limit to the future potential for textile applications.

Details

International Journal of Clothing Science and Technology, vol. 24 no. 6
Type: Research Article
ISSN: 0955-6222

Keywords

Article
Publication date: 1 February 1990

Mark Wilson

This paper presents the results of an empirical investigation into the capital budgeting practices of UK multinationals for foreign direct investment, with particular reference to…

Abstract

This paper presents the results of an empirical investigation into the capital budgeting practices of UK multinationals for foreign direct investment, with particular reference to the use of a conceptual framework of risk and return. Drawing upon Robock's (1965) criticisms of the lack of a conceptual framework for businessmen within which to make international financing and capital budgeting decisions, we assess briefly the developments in the theoretical framework of risk and return since Robock's address. We then review the existing empirical literature (mainly from America) and combine this with our own research involving 59 UK multinationals, to conclude that the developments in the theoretical framework of risk and return have not been translated into practice. We offer suggestions as to why this is the case.

Details

Managerial Finance, vol. 16 no. 2
Type: Research Article
ISSN: 0307-4358

Article
Publication date: 1 August 1995

T. Laclair and J.I. Frankel

One‐dimensional radiative heat transfer is considered in aplane‐parallel geometry for an absorbing, emitting, and linearly anisotropicscattering medium subjected to azimuthally…

Abstract

One‐dimensional radiative heat transfer is considered in a plane‐parallel geometry for an absorbing, emitting, and linearly anisotropic scattering medium subjected to azimuthally symmetric incident radiation at the boundaries. The integral form of the transport equation is used throughout the analysis. This formulation leads to a system of weakly‐singular Fredholm integral equations of the second kind. The resulting unknown functions are then formally expanded in Chebyshev series. These series representations are truncated at a specified number of terms, leaving residual functions as a result of the approximation. The collocation and the Ritz‐Galerkin methods are formulated, and are expressed in terms of general orthogonality conditions applied to the residual functions. The major contribution of the present work lies in developing quantitative error estimates. Error bounds are obtained for the approximating functions by developing equations relating the residuals to the errors and applying functional norms to the resulting set of equations. The collocation and Ritz‐Galerkin methods are each applied in turn to determine the expansion coefficients of the approximating functions. The effectiveness of each method is interpreted by analyzing the errors which result from the approximations.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 5 no. 8
Type: Research Article
ISSN: 0961-5539

Keywords

Article
Publication date: 5 December 2018

Aida Sy and Anthony M. Tinker

This paper aims to investigate the financial crises and the role of auditors in those crises. The paper is concerned with the banking system, as the last financial crisis in 2008…

Abstract

Purpose

This paper aims to investigate the financial crises and the role of auditors in those crises. The paper is concerned with the banking system, as the last financial crisis in 2008 was provoked by the mortgage business and the big banks and risks management.

Design/methodology/approach

The paper choses to use data from corporations, practices and professional websites. The authors use interviews that were available and related to the subject matter. Academic works are also used to discuss the literature review and various issues.

Findings

The paper explores the auditors’ responsibilities and finds that there is a growing concern for auditing. This research is complex, as it discovers that corporate executives in the banking business should be more responsible; this is confirmed by the high risks in the financial area that still persists.

Research limitations/implications

This is a very complex topic; however, the authors designed it so that it can be read and used by non-accountants, that is to say, CEOs and governmental agencies that are in charge of the regulatory system. Further research studies are needed to ensure ongoing discussions about the financial crisis. The Word is not free from such bad economic events.

Practical implications

The contribution is important; this research can be used by organizations, governments and academics.

Social implications

The paper includes implications for the banking and auditing industries. It extends to the public interest.

Originality/value

This paper contributes to the literature for academic and can be used for teaching purposes. Students can understand the paper, as the authors did not use a regression model.

Details

Social Responsibility Journal, vol. 15 no. 4
Type: Research Article
ISSN: 1747-1117

Keywords

Article
Publication date: 29 November 2017

Stefan Korber and Rod B. McNaughton

The purpose of this paper is to review existing literature at the intersection of resilience and entrepreneurship. It identifies six scholarly conversations, each of which draws…

8842

Abstract

Purpose

The purpose of this paper is to review existing literature at the intersection of resilience and entrepreneurship. It identifies six scholarly conversations, each of which draws on distinct notions of resilience and entrepreneurship. Based on those conversations, shortcomings in the existing literature are discussed and avenues for future research are outlined.

Design/methodology/approach

A systematic multi-disciplinary review of 144 papers that are categorized into six scholarly conversations to build the foundation for a critical discussion of each line of inquiry.

Findings

This paper identifies six conversations or research streams at the intersection of entrepreneurship and resilience: resilience as traits or characteristics of entrepreneurial firms or individuals, resilience as a trigger for entrepreneurial intentions, entrepreneurial behavior as enhancing organizational resilience, entrepreneurial firms fostering macro-level (regions, communities, economies) resilience, resilience in the context of entrepreneurial failure, and resilience as a process of recovery and transformation. The review revealed these publications imprecisely define constructs and use a limited amount of the extant scholarship on both entrepreneurship and resilience. Future research should take a more holistic approach to explore entrepreneurship and resilience from a multi-level and longitudinal perspective, especially in the context of socio-ecological sustainability.

Originality/value

This paper incorporates insights on resilience and entrepreneurship across academic disciplines to show how future contributions could benefit by incorporating research from other fields. In doing so, it provides a starting point for more nuanced discussions around the interrelationships between the different conversations and the role entrepreneurs can play in promoting a positive, long-term trajectory for a socio-ecological system.

Details

International Journal of Entrepreneurial Behavior & Research, vol. 24 no. 7
Type: Research Article
ISSN: 1355-2554

Keywords

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