The measurement of technical efficiency of decision making units is useful for making comparisons and informing managers and policy makers on existing differentials and potential improvements across a sample of analyzed units. The step further is to relate the obtained efficiency estimates to some external or environmental variables which may influence the production process and hence, affect t...

Disaster exercises are intended to improve disaster responses effectiveness. Exercises exist in a wide variety, ranging from table-top scenarios to full-scale disaster simulations, offering participants different learning experiences. However these exercises can be overwhelming to newcomers, especially when involving large scale simulations, reducing the effectiveness of the learning experience...

Hydronic or electric heating of pavement surfaces has been used in the prevention of ice formation and snow deposition with the aim of improving transportation safety. This paper describes a numerical model of a heated pavement and the snow melting processes occurring on its surface. A set of boundary conditions have been defined, and models of heat and mass transfer developed, that allow treat...

A virtual environment (VE) of portions of the ex-USS Shadwell, the Navy's full-scale fire research and test ship, has been developed to study the feasibility of using immersive VE as a tool for shipboard firefighting training and mission rehearsal. The VE system uses a headmounted display and 3D joystick to allow users to navigate through and interact with the environment. Fire and smoke effect...

A new approach to the design of light manipulator arms with long links is proposed in this paper. In contrast with traditional schemes, a flexible link is provided with a special force unloading system (FUS) having electrohydraulic drives. As a result, the static and dynamic errors caused by link structural deflections are minimized. Strategy of control the unloading actuators with measuring st...

In chapter 3, we discussed the characteristics of the simulated incident flow by its statistical parameters. In chapter 4, wavelet analysis is applied to characterize the velocity field of the simulated turbulence in the eight configurations. In this chapter, we discuss how the pressure varies for these configurations. Such variations are important because they could be used as a basis for esta...

In this paper, a new full rate, full diversity 2 2 STBC with linear complexity in the receiver is introduced for keyhole channels, where the rank-deficiency of the channel matrix degrades system performance. This code is optimized based on the known criteria for these types of the channels. Simulation results demonstrate that the proposed code outperforms some of the well-recognized STBCs when ...

objective: to systematically review the current literature of simulation in healthcare including the structured steps in the emergency healthcare sector by proposing a framework for simulation in the emergency department. methods: for the purpose of collecting the data, pubmed and acm databases were used between the years 2003 and 2013. the inclusion criteria were to select english-written arti...

A numerical dynamic-aerodynamic interface for simulating the separation dy­n­a­m­ic­s of co­n­­s­t­r­a­i­ned strap-on boosters jettisoned in the atmosphere is presented. A 6-DOF multi body dynamic solver ،using Constraint For­ce Equation Methodology is coupled with a numerical time dependent Euler flow solver. An automatic dyna­m­i­­c mesh updating proc­e­d­ure is employed using smoothing and l...