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Simulation is a well-known technique for using computers to imitate or simulate the operations of various kinds of real-world facilities or processes. The facility or process of interest is usually called a system, and to study it scientifically, we often have to make a set of assumptions about how it works. These assumptions, which usually take the form of mathematical or logical relationships, constitute a model that is used to gain some understanding of how the corresponding system behaves, and the quality of these understandings essentially depends on the credibility of given assumptions or models, known as VV&A (verification, validation and accreditation). The main purpose of this paper is to present an in-depth theoretical review and analysis for the application of VV&A in large-scale simulations.

After summarizing the VV&A of related research studies, the standards, frameworks, techniques, methods and tools have been discussed according to the characteristics of large-scale simulations (such as crowd network simulations).

The contributions of this paper will be useful for both academics and practitioners for formulating VV&A in large-scale simulations (such as crowd network simulations).

This paper will help researchers to provide support of a recommendation for formulating VV&A in large-scale simulations (such as crowd network simulations).

This article attempts to highlight the defining role that community media engagements play during times of the pandemic. It is argued that the outbreak of COVID-19 pandemic forced community news media houses to reinvent their news reporting practices to cover issues pertaining to the marginalized and underprivileged sections of the society. It explores the role of community media in engaging and empowering the citizens during the COVID-19 pandemic.

Central to our study is the analysis of the news model of “Video Volunteers” (henceforth VV), an independent community-based online news platform based in India. To understand the level of citizen participation and engagement in the making and dissemination of news during the pandemic, the authors conducted 13 interviews with different stakeholders of VV, including founders and news audiences.

It seeks to reveal that when the mainstream media have failed to represent the issues of a local community, it is the independent media platforms like VV which function as a veritable source of information and sharing of knowledge. Most importantly, this paper emphasizes that the communicative model of independent community-based online platforms has been most successful in the coverage of the pandemic and the level of engagement with the citizenry.

The study contributes to the aspects of reciprocity and collaborative journalism in community news media and its potential impacts on news creation and dissemination.

The case study centers on the ways in which a world‐renowned beauty pageant is deployed as a strategic asset by the Organización Cisneros (OC), a major player among Latin American television companies. The Miss Venezuela (MV) beauty contest has iconic status in Venezuela and enjoys an international reputation. Following the election of President Chávez in 1998 the OC gradually scaled‐down its operations in Venezuela. Adriana Cisneros, OC Vice President, turned MV into a key element of the Corporate Social Responsibility strategy at Venevisión, the TV channel founded by her grandfather. She also sought ways to build on the MV brand, in order to strengthen the OC's business strategy.

The case study employs an inductive methodology, using a comprehensive approach to develop a teaching case study. It focusses on understanding a concrete business situation presented within a detailed contextual analysis.

Complex business and strategic decision making calls for a thorough analysis of internal business variables and a deep understanding of complex environmental forces.

The comprehensive approach and detailed information presented in this case study constitute a versatile resource that will be useful for teaching topics including strategy, innovation, and business model development.

Virtual communities of practice (VCoPs) supported educators during the COVID-19 pandemic and the resurgent movement for racial justice that arose in 2020. Four VCoPs offered a venue for practitioners and researchers to develop social capital in the face of pandemic and persistent institutional racism.

Researchers conducted semi-structured interviews with organizers of four VCoPs and collected supporting documentation from those organizers.

VCoP organizers created opportunities to develop bridging and bonding capital of equity- and justice-focused educators.

The analysis points toward the affordances of VCoPs in crisis response and equity leadership.

This original analysis extends work on communities of practice, generally, virtual communities of practice, and equity leadership development.

The purpose of this paper is to present the use of the compensation theorem (CT), well known in the analysis of linear electric networks, to compute sensitivity of the performance functions used in the robust design or tolerance analysis of electromagnetic devices.

The CT is first illustrated in the case of a simple field analysis problem. Then, using numerical simulations, the effectiveness of compensation approach for assessing impact of the small modification of material properties is shown. The numerical simulations are performed with a finite elements code based on an integral formulation.

The complexity of additional computations to assess the effect of small variations involved in sensitivity analysis can be reduced.

The method can be applied only to linear systems; in addition, although compensation applies to any variations, the reduction of computational complexity is achieved only for small variations, giving localized effects.

The method proposed in the paper can speed up the computations of sensitivity arrays in the robust design and tolerance analysis of electromagnetic device, when numerical methods are applied.

The use of CT in field computations is not new, but its adoption in the sensitivity computation is new to the best knowledge of authors.

The main contribution of this paper is to integrate into one model management and organizational fields that are normally analyzed separately: contingency factors, organizational design variables, strategic approaches and quality management approaches. The essential core of the model is constituted by three basic variables of organizational design: level of centralization, level of formalization‐standardization, and level of shared vision and common values. Through analysis using this conceptual tool, we can: assess the position of tasks and organizational units in relation to these organizational variables; evaluate the congruence between organizational variables and contingency factors; identify relationships between strategic management approaches and quality approaches; and establish a fit between strategic management approaches, organizational variables, contingency factors and quality approaches.

In this paper, numerical modelling and dynamical response analysis were performed for the HL-2M vacuum vessel (VV) and shielding plates (SPs) during a plasma disruption by using an updated ANSYS parametric design language (APDL) code developed by the authors. The purpose of this paper is to investigate the influence of the SPs on the dynamical response of VV owing to a transient electromagnetic (EM) force and to optimize the design of SPs in view of the minimization of the structural dynamic response.

The Lagrangian approach, i.e. the moving coordinate scheme developed by the authors, was updated to tackle the EM-mechanical coupling effect in the dynamic response analysis of the VV-SPs system due to the transient EM force during plasma disruptions. To optimize the structural design of HL-2M SPs, the influence of the key parameters of SPs, i.e., the side length, thickness and material properties, was clarified on the basis of the numerical results and an optimized design of SPs was obtained.

The updated APDL code of the Lagrangian approach is efficient for the transient dynamical response analysis of the VV-SPs system owing to the EM force. The SP of a smaller side length, larger thickness tungsten material better mitigates the dynamical response of the VV-SPs system.

The Lagrangian approach was updated for the EM–mechanical coupling dynamical response analysis of the VV-SPs system, and the influence of the SP parameters on the dynamical response of the VV-SPs system of HL-2M Tokamak was clarified.

The purpose of this paper is to present a new perspective on the marketing-R & D interface by modelling firms that develop new products in a duopolistic market.

By using a game-theoretic modelling approach, this study examines strategic delegation, through which the marketing and R & D managers of each firm are given authority over pricing and new products’ quality levels.

Interestingly, the study finds that the case where two managers with conflicting incentives negotiate (the horizontal coordination case) might produce a better financial outcome than when the managers’ decisions are perfectly coordinated by a profit-maximizing CEO (the vertical control case). In addition, the study identifies several conditions that guarantee horizontal coordination’s generation of higher profit, such as high (or low) sensitivity to the quality (or price) of a new product. The paper further shows that two competing firms may select horizontal coordination as a Nash equilibrium.

These findings provide new insights into the role of marketing-R & D interaction under strategic delegation, which may allow rival firms to “spend smart” on R & D, avoid excessive (and unnecessary) quality competition, and thus enhance the profitability of new products. Such insights would be useful for any firms under budget constraints.

To the authors’ knowledge, this paper represents the first attempt to analyze how delegation interacts with the conflicting incentives of marketing and R & D managers, which in turn affects the quality investment decisions, competitive intensity, and, ultimately, the financial outcomes of new products developed competing firms.

The purpose of this paper is to examine the impact of transaction costs on economic welfare and development, and the role of information technology (IT) in reducing transaction costs.

The paper extends the static model of Romer, in which transaction costs reduce welfare by reducing the equilibrium number of intermediate goods, and estimate the welfare losses in the case of domestic transaction costs. The main analysis of the paper extends a dynamic model of Ciccone and Matsuyama to incorporate transaction costs. Also described are case studies of the use of IT in rural India.

In the static model, it is shown that domestic transaction costs have a substantial welfare impact when the number of goods is endogenous. In the dynamic model, it is shown that high transaction costs reduce the long‐run level of development, and may arrest development completely in the extreme case. Some preliminary, qualitative evidence from rural India is offered to illustrate how these reductions may occur through the use of IT.

The treatment of transaction costs in a dynamic model is novel, and the use of such a model provides a new theoretical underpinning for understanding the potential impacts of IT on development.

This article describes an episode at a large U.S. state university in which a computer‐based student admissions system was being developed and implemented. A verbatim extract from an interview with the project leader is presented and this is analyzed using exegetical guidelines. The systems personnel were attempting to introduce the admissions system by linking several previously autonomous admissions units across the university. The paper describes how the undergraduate unit, the first to be computerized, resisted the original, multi‐screen design, favoring instead a single screen solution. It traces in some detail the various encounters between the systems staff and users and shows how the episode was resolved. The paper illustrates how resistance to systems can arise in practice. It also demonstrates the inherent difficulty in introducing integrated information systems across loosely‐coupled administrative units.