Search results

The purpose of this paper is to survey and express the advantages and disadvantages of the existing approaches for solving grey linear programming in decision-making problems.

After presenting the concepts of grey systems and grey numbers, this paper surveys existing approaches for solving grey linear programming problems and applications. Also, methods and approaches for solving grey linear programming are classified, and its advantages and disadvantages are expressed.

The progress of grey programming has been expressed from past to present. The main methods for solving the grey linear programming problem can be categorized as Best-Worst model, Confidence degree, Whitening parameters, Prediction model, Positioned solution, Genetic algorithm, Covered solution, Multi-objective, Simplex and dual theory methods. This survey investigates the developments of various solving grey programming methods and its applications.

Different methods for solving grey linear programming problems are presented, where each of them has disadvantages and advantages in providing results of grey linear programming problems. This study attempted to review papers published during 35 years (1985–2020) about grey linear programming solving and applications. The review also helps clarify the important advantages, disadvantages and distinctions between different approaches and algorithms such as weakness of solving linear programming with grey numbers in constraints, inappropriate results with the lower bound is greater than upper bound, out of feasible region solutions and so on.

This paper aims to examine the migrant dilemma about operating extensively in migrant enclaves vs integration in host communities.

The paper is a critical literature review contrasting views and perspectives of the role of migrant enclaves in migrant integration and contribution in new societies. Research in the area of ethnic enclaves has been polarised: on the one hand, the optimists argue the critical benefits of migrant and ethnic community networks, thus downplaying potential drawbacks of such networks and the disadvantage externally imposed on migrants; on the other hand, the pessimists overemphasise the disadvantages of ethnic enclaves, portraying them as ghettos of alienation.

Based on the social solidarity integration model and immigrant-host and social interaction theory, the paper posits that migrant community networks could intentionally or unintentionally engender cultural alienation, worsening an already precarious educational, cultural and economic exclusion. Thus, migrants could remain in lower societal roles and experience limited upward social mobility if they operate exclusively within migrant and ethnic networks. However, ethnic enclaves, at the same time, offer the initial psychological nurturing on which future successful socialisation work with migrant communities can be built.

From a research angle, the theorisation of migrant enclave requires a new approach, which identifies dynamism and contextualisation as central to the debate.

From a policy perspective, the research suggests the rethinking of the role of community support systems (and the wider enclave debate). The organisational implications the research suggests a shift of the organisational paradigm in the way migrant organisations manage themselves and support members in the enclave.

This paper’s contribution is to take a duality approach to studying the ethnic enclave and posits that this will engender effective social policy that helps reduce economic inequality.

Purpose – The integration of librarians and technologists to deliver information services represents a new and costly organizational challenge for many library administrators. To understand how to control the costs of integration, this study uses structural contingency theory to study the coordination of librarians and technologists within the information commons.

Design/methodology/approach – This study tests the structural contingency theory expectation that an organization will achieve higher levels of performance when there is a positive relationship between the degree of workflow interdependence and the complexity of coordinative structures necessary to integrate these workflows. This expectation was tested by (a) identifying and collecting a sample of information common; (b) developing and validating survey instruments to test the proposition; and (c) quantitatively analyzing the data to test the proposed contingency theory relationship.

Findings – The contingency theory expectations were confirmed by finding both a positive relationship between coordination and interdependence and a positive relationship between perceptions of performance and degree of congruency between interdependence and coordination.

Limitations – The findings of this study are limited to both the context of an information common and the structures tested. Future research should seek to both broaden the context in which these findings are applicable, and test additional structural relationships as proposed by contingency theory

Practical implications – This study contributes to the library profession in a number of ways. First, it suggests that managers can improve IC performance by matching coordination structures to the degree of interdependence. For instance, when librarians and technologists are strictly co-located, managers should coordinate workflows using less resource-intensive policies rather than meetings. Second, the instruments developed in this study will improve the library manager's ability to measure and report unit interdependence and coordination in a valid and reliable manner. Lastly, it also contributes to the study of structural contingency theory by presenting one of the first empirical confirmations of a positive relationship between interdependence and coordination.

Originality/value – This study represents one of the first empirical confirmations of the structural contingency theory expectations of both a positive relationship between workflow interdependence and coordination, and a positive relationship between performance and coordination's fit to workflow interdependence. These findings are of value to both organizational theorists and to administrators of information commons.

The purpose of this paper is to propose an accurate model for simulation of inrush current in power transformers with taking into account the magnetic core structure and hysteresis phenomenon. Determination of the required model parameters and generalization of the obtained parameters to be used in different conditions with acceptable accuracy is the secondary purpose of this work.

The duality transformation is used to construct the transformer model based on its topology. The inverse Jiles-Atherton hysteresis model is used to represent the magnetic core behavior. Measured inrush waveforms of a laboratory test power transformer are used to calculate a fitness function which is defined by comparing the measured and simulated currents. This fitness function is minimized by particle swarm optimization algorithm which calculates the optimal model parameters.

An analytical and simple approach is proposed to generalize the obtained parameters from one inrush current measurement for simulation of this phenomenon in different situations. The measurement results verify the accuracy of the proposed method. The developed model with the determined parameters can be used for accurate simulation of inrush current transient in power transformers.

A general and flexible topology-based model is developed in PSCAD/EMTDC software to represent the transformer behavior in inrush situation. The hysteresis model parameters which are obtained from one inrush current waveform are generalized using the structure parameters, switching angle, and residual flux for accurate simulation of this phenomenon in different conditions.

This paper aims to investigate whether multinational enterprises (MNEs) are more or less likely than local firms to violate their employees’ human rights in emerging economies, whether regional institutional pressures influence the likelihood of violating employee human rights and whether the density of MNEs in a region affects the likelihood of employees’ human rights violation by local firms.

Building on neo-institutional theory, this paper hypothesizes that, in an emerging economy, MNEs violate their employees’ human rights significantly less than local firms do. Moreover, it is hypothesized that the quality of regional institutions only influences the social behavior of local firms toward their employees. In addition, it is hypothesized that the density of MNEs in a region has a positive effect on local firms’ attitudes toward employee human rights. These hypotheses are examined using a sample of 1,211,638 respondent–year observations in 32 Mexican regions between 2005 and 2014.

This paper shows that MNEs are less likely to violate their employees’ human rights than local firms are. It also provides evidence that regional institutions do not influence MNE behavior toward employee human rights violation, but affect local firms. Furthermore, contrary to what was hypothesized, the density of MNEs in a region has a negative rather than positive influence on local firms’ respect of employee human rights.

This paper advances understanding of the behavior of MNEs in an emerging economy setting and contributes to the ongoing debate in the literature on their social impact.

The purpose of this paper is to challenge some taken-for-granted practices related to organizational change in order to understand how organizational change as practice is conditioned by mundane assumptions.

A critical analysis of the taken-for-granted assumptions revealed by a literature review was conducted utilizing practice theory approach in which human behavior and social context are intertwined. Hence, the analysis of this theoretical paper focuses on practices, praxis and practitioners in organizational change.

The results suggest that certain elements that are believed to be universal in organizational change are, in fact, particular within context. The key finding and message of this research is that organizational change in practice is a manifestation of particularity. The conclusion is that certain mundane assumptions condition organizational change practices by ignoring the importance of power, phronesis and paradox, which lie in human interaction within social context.

The proposal that the dominating discourse on organizational change involves some taken-for-granted assumptions, challenges scholars to question the ways organizations are currently studied, and perhaps draws more attention to power, context and particularity in future research.

The analysis demonstrates that the social aspect of organizational realities is crucial in organizational change, and should not be underestimated by the practitioners in the process. This realism of practice complexity indicates that the pitfalls of organizational change are more context dependent and thus, more numerous than generally is assumed.

This research contributes to both theory and practice by offering a critical view on some of the taken-for-granted organizational change practices. This paper also demonstrates originality by introducing the concept of “organizational change as practice” in analogue of “strategy as practice” (SAP).

Underlying all distribution patterns is a supporting framework of transportation services. These services are greately affected by the transportation policy of the nation as set forth by Congress and administered by various regulatory and other governmental agencies.

There is a growing desire for more scientific and technical knowledge regarding Africa. This is because Africa has the potential and opportunity to generate impactful research. However, this potential is not optimized because of several constraints, including the lack of systematic reviews and models of knowledge management and paradoxical trends in Africa. The purpose of this paper is to review studies on knowledge management and associated paradoxes in Africa and a paradox-conscious African knowledge management model. The autochthonous African model that the authors propose has implications for global knowledge management.

The authors review studies on knowledge management and paradoxes on Africa.

The authors propose a model and identify 12 paradoxes broadly categorized as industrial, political and social.

The paradoxical tensions characteristic of Africa may be considered integral to business and policy rather than local expressions to be solved through international “best practice.”

The model this paper propose enables theoretical and empirical studies of knowledge management sensitive to the paradoxical tensions associated with autochthonous management knowledge and autochthonous knowledge management.

Although instability characterises export channels, little research has examined the interfirm evaluations that are related to a manufacturer′s continued use of export middlemen. In this research, a manufacturer′s evaluations of its international intermediary are divided into performance, dependence, and importance dimensions. Theoretical and empirical literatures are used to frame hypotheses linking each evaluative dimension to an aspect of the manufacturer′s channel design strategy. The results show that manufacturers′ evaluations of their middlemen are systematically related to the economic and organisational strategies used by manufacturers. The discussion draws important implications for managing the indirect export channel.

This paper aims to quantify preferences without having to have any utility data.

We use duality theory, Taylor’s theorem and nonlinear regressions.

We presented pioneering quantitative methods in economics and business. These methods can be applied to numerous topics in empirical and theoretical economics and business. Moreover, this paper highlighted the interdisciplinary nature of economics. In doing so, it emphasized the interface between economics, marketing, management, statistics and mathematics. Furthermore, it circumvented a major obstacle in the literature: the curse of dimensionality.

The authors introduce a novel and convenient approach to utility modeling. In doing so, they present a general utility function in a simple form. Furthermore, they develop a method to measure preferences without any utility data. They also devise a method to measure the marginal utility. Then, they develop new methods of modeling and measuring the consumer utility. In so doing, they overcome a major obstacle: the curse of the dimensionality. In addition, they introduce new methods of modeling and measuring the consumer demand for the firm’s good.