This study presents a reduction of production disturbances of a shoemaking industry through discrete event simulation approach. The study is conducted at Peacock Shoe factory found in Addis Ababa, Ethiopia.  This factory faces line balancing problem that becomes production disturbance for its assembly lines. Detail time study is carried out for the selected shoe model using stopwatch. Assembly ...

This paper presents a magnetostrictive in-pipe impact drive mechanism (IDM). To estimate the output performances of the IDM, a dynamics model was developed based on the magnetostrictive material constitutive model and mechanical model of the IDM. Therefore, an experimental system has been built to test the motion performance of IDM. Simulation and experimental results illustrate that the propos...

The purpose of this study is to understand observed behavior and to diagnose and find solutions to issues encountered in organizational computer security using a systemic approach, namely system archetypes. In this paper we show the feasibility of archetypes application and the benefits of simulation. We developed a model and simulation of some aspects of security based on system dynamics princ...

We develop a Systems Dynamics model for capturing the key interactions involved in the evolution of the subprime mortgage crisis. In particular, we propose an aggregate modeling resolution that involves three main sub-systems, namely, an aggregate banking system, an aggregate housing market and an economic environment. The model exposes the physics of each individual system as well as influence...

in recent years, more attention has been paid on intelligent vehicle suspension systems equipped with magneto-rheological dampers. in order to investigate nonlinear vehicle dynamics, in the majority of the researches, a quarter-car model with one or two degrees of freedom is used. in such simple models, one can only study the bounce motion of sprung and unsprung masses. in this paper, in order ...

– The dynamics of many continuous degrees of freedom interacting via a random potential and subject to a global spherical constraint is investigated. The model is a prototype mean-field model for structural glasses near the glass transition. In the high temperature phase the model is described by equations similar to those of the Schematic Mode Coupling Theory for structural glasses. The analys...

projected global climate change may have a major influence on crop yield. the likely effects of climate change caused by increasing atmospheric carbon dioxide levels on rice yield in iran were evaluated using a mechanistic growth model for rice, gsac-rice, running under a climate change scenario predicted for a doubled-co2 (2xco2) atmosphere by the geophysical fluid dynamics laboratory (gfd...

Agency theory has long been a stalwart of IS research and is one of the most commonly used lenses to study the relationship between a principal and an agent. The Theory of Relationship Constraints (TRC) has recently been recommended as an informationoriented alternative to agency theory. TRC suggests that three attributes (i.e., the level of information asymmetry, levels of tacit and explicit k...

Because of electricity subsidies, electricity price in Iran is much lower than its real value, and the growth of electricity demand is much more than its rational rate, which in turn implies ever increasing investment in the electricity section by the Government. Therefore, the recent Government policies are based on elimination of electricity subsidies, followed by commissioning complete elect...