This article proposes two novel power management strategies (PMSs) to enhance the electrical quality in twin-screw all-electric ships (AESs) during vessel-wave encountering. Soothing PMS (SPMS) focuses on mitigating fluctuations of propulsion system since it has significant impacts extreme conditions. For this purpose, modifies propellers’ speed based in-and-out-of-water effect loss factor (LF)...

production planning is performed through diverse methods according to the type of the system it is structured upon. one of the most important steps before production planning is to determine which system best fits the firm, and how the facilities should be designed. both job-shop and group-technology systems have their own cons and pros, each of which is suitable to a specific kind of factory. ...

regarding to rapidly changing and highly competitive business environment it will become increasingly important for organizations to measure their performances appropriately. with respect to special characteristics of pharmaceutical industry and lack of reported performance measurement, this study tries to design an integrated performance measurement model for pharmaceutical companies. for gene...

In the conventional data envelopment analysis (DEA) internal sub-processes of the production units are ignored. The current paper develops a network-DEA super-efficiency model to compare the performance of efficient network systems. A new ranking method is developed by aggregating the computed super-efficiency scores with a J-divergence measure. The proposed approach is then applied to evaluate...

As computer systems grow in size and complexity, tool support is needed to facilitate the efficient mapping of large-scale applications onto these systems. To help achieve this mapping, performance analysis tools must provide robust performance observation capabilities at all levels of the system, as well as map low-level behavior to high-level program constructs. Instrumentation and measuremen...

Organisations of all kinds continue to expand their involvement in e-business. This requires considerable financial investment in IT, in processes and in people. It might be expected that there would be a concern to ensure that performance measurement systems are capable of justifying these investments, and of evaluating their worth once implemented. The paper describes research aimed at determ...

Currently, there is a great interest in performance measurement with many companies attempting to implement the balanced scorecard. However, there is also evidence that many of these implementations are not successful. This paper reviews the different performance measurement system design processes published in the literature and creates a framework for comparing alternative approaches. The pap...