In this paper, we propose formulations and algorithms for robust portfolio optimization under both aleatory uncertainty (i.e., natural variability) and epistemic uncertainty (i.e., imprecise probabilistic information) arising from interval data. Epistemic uncertainty is represented using two approaches: (1) moment bounding approach and (2) likelihood-based approach. This paper first proposes a ...

Simulation is a popular method of studying a Supply Chain (SC) system. This paper presents an overview of simulation in SCs. Basic concepts of systems, models and simulation are described and different views of simulation are shown. Simulation-based optimization techniques and the latest developments of simulation approaches in SC are presented. The paper also discusses the future trends of sim...

for any agency dealing with the design of the water distribution network, an economic design will be an objective. in this research, central force optimization (cfo) and differential evolution (de) algorithm were used to optimize ismail abad water distribution network. optimization of the network has been evaluated by developing an optimization model based on cfo and de algorithm in matlab and ...

Telementoring in surgical operations in remote areas of Malaysia as i inaccessible parts of rest of the world could be made a reality making use of existing hardware/ software solutions and facilities over the WWW in a cost effective way . The project making use of MSN Community and My Web was found to be viable even with the available facilities. at a reasonable cost. An acceptable teachinglea...

First of all a survey of the most relevant definitions and hypotheses concerning data, information, communication and knowledge is proposed. Main aim of this introduction is to give to the reader a reference frame for the analysis of the students’ learning and for their knowledge construction works. Soon after some wrong ideas are analyzed with respect to the above conceptual frame, i.e. with r...

The objective of this research is to evaluate the impact using simulators on students’ achievement competencies, such as: Inquire, through scientific methods build knowledge. methodology used consisted qualitative whose data collection was carried out an experiment with interactive Physics Educational Technology (PhET) simulators. a simple random sampling 25 students from population 100 physics...

Metaheuristic algorithms are preferred by the many researchers to reach the reliability based design optimization (RBDO) of truss structures. The cross-sectional area of the elements of a truss is considered as design variables for the size optimization under frequency constraints. The design of dome truss structures are optimized based on reliability by a popular metaheuristic optimization tec...

Non-profit academic project, developed under the open access initiative

Miminizing errors of the physical parameters of interest should be the ultimate goal of any event selection optimization in high energy physics data analysis involving parameter determination. Quick and reliable error estimation is a crucial ingredient for realizing this goal. In this paper we derive a formalism for direct evaluation of measurement errors using the signal probability density fu...