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The purpose of this paper is to derive the geometry‐based equations for inductances which are used in circuit theory analysis of synchronous reluctance motor (SRM). Transient and steady state performance analyze of SRM by using the 2D time‐stepping finite‐element method (FEM).

The analytical approach is used to obtain the equations which describe geometry dependent magnetizing inductances of SRM. Transient and steady state performance of the SRM is analyzed by using the 2D time‐stepping FEM. The external electric circuit connected with the finite‐element model of the SRM geometry allows the study of almost any of the electric and magnetic properties of the machine. Presented SRM model is also connected to the external mechanical loads (friction, rotor inertia and load torque). The use of different materials for the magnetic‐pole part of the rotor and for flux barriers was analyzed. The flux barriers in the first SRM rotor were filled with a pure massive electrically conductive ferromagnetic with a proper B‐H curve, whereas the rotor magnetic segments were made of non‐conductive electric steel described with its B‐H curve. The conductive barriers with their end rings form a squirrel cage and allow SRM to start on‐line. The flux barriers of the second SRM rotor were made of aluminum but between the second and third flux barrier a massive electrically‐conductive ferromagnetic was inserted which during starting‐up acted as a part of the squirrel cage. All of the flux barriers of the third SRM rotor were made of electrically‐conductive aluminum with iron parts axially laminated. The finite‐element SRM models coupled with an electric circuit is also used to evaluate the motor performance at various asynchronous speeds.

Analytical geometry‐dependant equations for the d‐ and q‐axis SRM inductances are derived. On the basis of the proposed 2D time‐stepping finite‐element analysis, the start‐up performance for the SRM rotor design using different materials is established. The torque distribution as a function of time at any of the observed asynchronous speeds is not smooth and uniform. It consists of the stator‐to‐rotor tooth pulsating torque, and the synchronous and asynchronous component.

The main disadvantage of analytical geometry‐dependant equations for the d‐ and q‐axis SRM inductances is the linearization of any of the ferromagnetic parts.

On the basis of the proposed 2D time‐stepping finite‐element analysis, the start‐up performance, asynchronous run and synchronous torque characteristics for the SRM rotor design using different materials are established.

The value of the paper is the closed view about happenings in rotor flux barriers of SRM, mostly regarding the time distribution of induced currents in the rotor flux barriers. On the base of 2D time‐stepping FEM, the use of different materials for the magnetic‐pole part of the rotor and for flux barriers was analyzed.

Introduction: Looking at the risks faced by enterprises in recent years, we see that the risks have shifted radically from traditional economic and financial risks to those posed by environmental and social factors. Developments in the field of activity of enterprises (climate change, the increasing relationship between the society and enterprises through shareholders and partners) have led to an increase in the number and diversity of risks faced by enterprises. It is only possible for enterprises to cope with these increasing risks by adopting a proactive and contemporary management approach. One of these contemporary management approaches that businesses should adopt is sustainability. Many researches have shown that the integration of sustainability into risk management has proved successful in risk management.

Purpose: Looking at previous literature, this study sets forth what financial (economic), environmental and social risks businesses may face today, explains with a few examples what measures companies can implement to eliminate these risks, and a future perspective is presented to companies. In addition, this study makes recommendations on how to successfully manage the risks that companies may face and emphasizes what the positive results of sustainable risk management can be (increasing the business value, ensuring sustainability and increasing the shareholder value). Mention was made about the fact that the ability of enterprises to successfully manage sustainability risks depends on their ability to prevent, identify, mitigate and manage risks, and it was emphasized that the environmental, social and governance risks must, to a large extent, be taken into account by many circles (regulators and customers), mainly investors. In addition, this study aims to identify and evaluate the current and possible future risks and to serve as a guide for actions to be taken to minimize risks or keep them at an optimum level.

Methodology: In this section, a compilation study on sustainability risk management (SRM) was done in the light of information obtained from various reports, scientific articles and books. In other words, in this section, information from various scientific sources on SRM was systematically collected, analyzed, interpreted and evaluated, and effort was made to present an up-to-date, extensive conceptual framework related to SRM. In addition, the scientific literature – especially in the historical development process of the last decade – on the debate of SRM was examined in this study, and the highest point reached in this debate today is revealed. Thus, the positioning of different views on the sustainability issue and the latest developments in the literature were also evaluated properly.

Findings: As a result of the examination of the scientific literature on SRM in the last decade, it has been determined that SRM has led to many other favorable outcomes, from the sustainability of the enterprise to gaining competitive advantage, increasing its goodwill, reputation and efficiency.

The study examines the intricate interplay between supplier relationship management (SRM), procurement performance, supply chain responsiveness (SCR) and competitive advantage. Additionally, the study examines the mediating role of procurement performance and SCR in the link between SRM and competitive advantage.

A research model grounded in the resource-based view and dynamic capabilities theory (DCT) was developed and tested using partial least squares structural equation modeling (PLS-SEM). Data were obtained from 122 firms in Ghana.

The study revealed that SRM has a positive and significant effect on procurement performance, SCR and competitive advantage. Additionally, SCR has a positive and significant effect on competitive advantage; however, procurement performance has a negative and insignificant effect on competitive advantage. It was also revealed that SCR partially mediates the relationship between SRM and competitive advantage but fully mediates the relationship between procurement performance and competitive advantage. Also, it was also revealed that procurement performance does not mediate the relationship between SRM and competitive advantage.

The study contributes to literature by highlighting the mediating role of SCR in influencing the effect of SRM and procurement performance on competitive advantage.

Practically, the study findings highlight the need for firms to seek, build and manage meaningful relationships with their suppliers in order to enhance their competency and capability to influence their competitive position in the marketplace.

To the best of the researchers' knowledge, no prior study has examined the effect of SRM on procurement performance and SCR. Additionally, no previous study has examined the mediating role of procurement performance and SCR on the link between SRM and competitive advantage.

An improved simulation model of switched reluctance motor (SRM) for steady-state operation that considers the core losses in the stator and rotor is established to obtain the steady performance of the high-speed SRM during the design, analysis and control of SRM driving system more accurately.

The transient core loss model for the material and SRM is presented. Then a new method for calculating the flux density of the motor in real time is introduced, and a steady-state simulation model of the SRM including real-time transient core losses calculation model is established according to the transient flux density. Because the transient core losses calculated by above method are the total core losses of the motor, a core losses distribution method is proposed and the steady-state simulation model of the SRM including the distributed core losses’ effect on the phase winding is established.

The comparison results show that the proposed model has higher accuracy than the traditional model, excluding core losses, especially at the moments when phase voltage is turn-on and turn-off. The proportion of the core losses to the motor losses increases with the increase in speed. So, the core losses’ effect on the steady-state performance of the high-speed SRM cannot be ignored.

The method to obtain flux density in the real time is presented and the improved steady-state simulation model of SRM that considering transient core losses is proposed.

Revisits the strategic resource management (SRM) model, a framework that was developed 20 years ago as a managerial tool for performance measurement and integrated decision making in retailing. Shows certain modifications to the SRM model, focusing on the gross and net margin return on retail space (i.e. GMROF and NMROF) as the key metrics. Authors contend the new focus gives the SRM framework a firmer grounding conceptually, and makes the SRM model more directional in practice. The paper also extends the SRM framework from its traditional gross margin metrics to net margin. Authors believe the greatest benefits of the SRM framework continue to be in benchmarking, planning, and executing alternative inventory, space, and people strategies in an integrative fashion.

The purpose of this paper is to propose a new three-phase switched reluctance motor (SRM), and achieve high-torque and low-cost. This new SRM's winding configuration uses the double-layer distributed windings, which is different from the conventional SRM's single tooth coils.

The operating principle of new SRM is analyzed, and the voltage equation and the generated torque are deduced. Finite element method (FEM) and finite element circuit coupled method are utilized to evaluate the new motor's operating performances. The two dimensional (2D) frequency response analysis model is employed in the FEM model. Based on the 2D frequency response analysis model, the magnetic field distribution, self-inductance, and mutual-inductance for the new SRM are analyzed in detail. A co-simulation model using FE analysis package and Matlab-Simulink is proposed to simulate the new SRM drive. The simulated and experimental results verify the new SRM.

For the new SRM with double-layer distributed windings, a co-simulation method is proposed to analyze its characteristics. The new SRM presents lower torque ripple coefficient and generates larger torque than the conventional SRM, with three-wire and standard full bridge power converter, rather than six-wire and asymmetric half-bridge converter for conventional SRM.

This paper proposes a new SRM with the double-layer distributed windings driven by a standard full bridge inverter. In order to calculate dynamic characteristics of the new SRM, a co-simulation method using FEM and Simulink is proposed to simulate the new SRM drive, where the power inverter and the current chopping control algorithm are implemented.

There have been many studies on topics related to supplier relationship management (SRM), namely purchasing strategy, supplier selection and development, and collaboration with suppliers. However, these studies have not suggested a solution based on an integrative concept, as they focus only on domain‐specific problems. To overcome this limitation, the purpose of this present paper is to suggest a framework for an integrative SRM system by analyzing comprehensive approaches to overall SRM functions.

The paper reviewed and analyzed studies related to SRM from an integrative viewpoint, proposed a framework for an integrative SRM system, and performed a case study based on the analytical hierarchy process with a field survey.

The paper expects that the proposed framework can play a major role in enhancing the efficiency and effectiveness of SRM by adopting an integrative concept because the functions of SRM are highly interrelated. Furthermore, it verifies the applicability of the framework via a case study.

Not many approaches are available for organizing evaluators or evaluation sheets, which are used for selecting criteria, providing weight, and evaluating supplier performance, that can secure objectivity of the evaluation; thus, when applying this framework to the industry, special consideration is needed.

The proposed framework allows the purchasing members to scrutinize key features of SRM before and during the SRM system operation.

The paper provides useful knowledge about the role of SRM systems by holistically approaching SRM‐related processes while suggesting criteria and recommendations to a purchasing manager.

The automotive industry extensively uses switched reluctance motors (SRM) because of their excellent performance. The main purpose of this article is to investigate the design of a particular type of SRM called doubly salient outer rotor switched reluctance motor (DSORSRM) for electric vehicle application in this paper.

Different configurations of DSORSRM motor such as long flux path SRM, reduced flux path mutually coupled SRM and short flux path SRM (SF-SRM) are considered for investigation. The best configuration based on average torque is selected for further investigation by conducting an electromagnetic analysis. Also, in the proposed design, laminating material with low iron loss and superior performance characteristics is selected by doing electromagnetic analysis for SRM with M19, M660-50D, M-19 and M800-100A non-oriented laminating core material. Because vibrations are produced in DSORSRM devices as a result of changing induction, a mechanical analysis was performed to estimate the natural frequencies of vibration and the amplitudes that may lead to acoustic noises.

SF-SRM configuration with three-phase, 12/10, 250 W, 48 V, 1,000 rpm is selected with the impact in the elimination of flux reversals and also has various salient features such as singly excited, no rotor windings, no permanent magnet, pure in construction and high starting torque. Still, this SRM suffers from vibration owing to changing induction. In lamination material selection, M19 is chosen as optimized material to obtain vibration reduction. Vibration analysis was performed for the optimized 12/10 SF-SRM with M19 lamination material, and the corresponding modes for the machine to operate with reduced vibration are analyzed. The current and speed characteristics of the prototype model for the DSORSRM motor are obtained and validated with finite element analysis (FEA) results.

The performed FEA result shows that the proposed DSORSRM with short flux path configuration produces a high average torque of 1.915 N m. The M19 lamination material gives a minimum iron loss of 9.056 W. The modal frequencies are estimated and validated with numerical equations.

Integrating the social exchange and resource dependency theories, the study aims to comparatively examine the supplier relationship management (SRM) dimensions and organizational performance links of private and public hospitals in Ghana.

Comparative in nature; employing a quantitative approach; and using simple random and convenience sampling techniques, the study tested the proposed hypotheses using structural equation model-partial least square based on 205 usable questionnaires. Partial least square-multigroup analysis (PLS-MGA) was performed to test the significance of the difference in the parameters between the two samples: private and public hospitals in Ghana.

The dimensions of SRM (communication, cooperation, trust, atmosphere and adaptation) have a significant, positive impact on private hospitals’ performance in Ghana. Similarly, communication and trust were found to be positively and significantly correlated to public hospitals’ performance. In contrast, cooperation, atmosphere and adaptation dimensions showed no significant, positive effect on public hospitals’ performance. PLS-MGA disclosed that these observed differences in the findings between the private and public hospitals in Ghana are statistically significant.

The findings of the study, while limited to hospitals in Ghana, are likely to be relevant in other emerging economies for effective and enhanced supply chain relationship management.

The findings provide pragmatic insights for marketing practitioners and organizational leaders of hospitals about the significance of SRM dimensions in today’s globalized marketplace, and how to nurture them to enhance organizational performance.

The value of the study lies in the examination of the relationship between SRM and organizational performance in the health sector by comparing private and public hospitals in an emerging economy context.

The purpose of this paper is to understand whether a link between the use of supplier selection (SS) and supply risk management (SRM) exists and whether further contextual factors which lead to the use of SRM and of SS exist in the engineering, procurement and construction (EPC) sector.

A multiple case study has been undertaken as an empirical analysis to answer a series of research questions. The data have been collected through structured interviews to corporate procurement directors of companies belonging to the Italian EPC sector and operating in an engineer‐to‐order fashion.

The results of the research point out that supply risk can be managed through both SS and SRM. These two different approaches are used alternatively by the companies investigated under resource constraints. A further set of contextual factors leading to the use of SRM (project orientation in supply management, use of partnerships with suppliers, corporate standardisation), and a contextual factor leading to the use of SS (need of co‐design) are highlighted in the EPC sector.

Although the sample of the in‐depth research is representative of the Italian EPC sector, its size implies care in drawing a fully generalizable conclusion. Moreover, the research focuses on companies belonging only to the EPC sector, but the behaviours could significantly vary in other sectors.

The paper is of value in identifying product‐ and supplier‐related factors for SRM including cultural (project orientation in supply management), strategic (use of partnerships with suppliers), and organizational (corporate standardisation).