* This work is partially funded by the Defense Advanced Research Projects Agency (DARPA), Small Business Innovation Research (SBIR), System Synthesis Environment Phase II in cooperation with InfoPike, Inc. Abstract Performance modeling and evaluation techniques are essential when designing and implementing distributed software systems. Constructing performance models for such systems can requir...

this paper discusses the performance evaluation and availability analysis of ammonia synthesis unit of a fertilizer plant. the fertilizer plant is a complex and repairable engineering system comprises of various units viz. shell gasification and carbon recovery, desulphurization, co-shift conversion, decarbonation, nitrogen wash and ammonia synthesis etc. one of the most important functionaries...

the impact of the management performance evaluation methods on the information quality in accounting will be studied in this paper. the information plays two roles in the market-oriented economies; first, it allows the investors to evaluate the potential opportunities of the investment (prospective role) and, secondly, it enables the investors to monitor how to allocate and use their capital by...

performance evaluation is one of the important components of each organization, and educational organizations are not the exceptions. teachers are believed by many researchers as the single most important factor influencing student academic success or failure. therefore, they need to be at the center of attempts to improve or reform the educational system of any country. considering the pivotal...

the performance evaluation and efficiency measurement of software companies and compare them together as a set of knowledge-based activities due to the unknown of internal processes and stages common to these companies and ignoring these processes in performance evaluation by data envelopment analysis models and how to consider these processes and procedures for calculating efficiency of each s...

During the last years a great number of Query Performance Prediction methods have been proposed. However, this explosion of prediction method proposals have not been paralleled by an in-depth study of suitable methods to evaluate these estimations. In this paper we analyse the current approaches to evaluate Query Performance Prediction methods, highlighting some limitations they present. We als...

We present an overview of current research in performance modeling, focusing on efforts underway in the Performance Evaluation Research Center (PERC). Using some new techniques, we are able to construct performance models that can be used to project the sustained performance of large-scale scientific programs on different systems, over a range of job and system sizes. Such models can be used by...

Software engineering society has suggested many methods of software architecture to enhance the preferred quality with concern of performance, reliability, maintainability, usability etc. However little effort is required for systematic comparison of these methods to mind variances and resemblances between existing methods. By using an evaluation framework, we will compare four famous software ...

many countries are turning their attention to the use of explicit financial incentives to drive desired improvements in healthcare performance. however, we have only a weak evidence-base to inform policy in this area. the research challenge is to generate robust evidence on what financial incentives work, under what circumstances, for whom and with what intended and unintended consequences.