In medical surgery planning, virtual reality (VR) provides a working environment, where 3D images of the operation area can be utilized. VR allows imaging data to viewed in more realistic reducing perceptual problems and increasing spatial understanding. present experiment, we compared mouse, hand tracking, combination stylus grab-enabled controller as interaction methods VR. The purpose was in...

introduction: one of the software packages designed for libraries and documenting centres is unesco cds/isis mini-micro software package. most libraries in iran have a copy of it. this research was aimed to investigate the degree of its application in central libraries of medical sciences universities in 2004. methods and materials: it is a descriptive study in which a questionnaire was used to...

With the recent deployment of global experimental networking facilities, dozens of computer networks with large numbers of computers have become available for scientific studies. Multiple Replications in Parallel (MRIP) is a distributed scenario of sequential quantitative stochastic simulation which offers significant speedup of simulation if it is executed on multiple computers of a local area...

Hard-disk drives (HDD‘s) are widely used data storage medium for computers and many other data processing devices. The servo mechanism in HDD plays an important role in high performance requirements of HDD‘s. Gain variations present in hard ware components of HDD‘s affects the consistent track following performances. So the servo system needs to improve in track following and robustness perform...

background handheld computers play an increasing role in improving healthcare services by making the information available at the point of care. there is not enough evidence regarding the usage of handheld computers by healthcare professionals in developing countries. objectives this study investigated the benefits and barriers of using handheld computers in clinical practice in a developing co...

The application of the synchronous dynamic random access memory (SDRAM) has gone beyond the scope of personal computers for quite a long time. It comes into hand whenever a big amount of low price and still high speed memory is needed. Most of the newly developed stand alone embedded devices in the field of image, video and sound processing take more and more use of it. The big amount of low pr...

Abstract Offline optimization of controller parameters for complex non-linear processes can be time consuming, even with high performance computers. This paper demonstrates how Metamodelling techniques can be utilized to quickly tune the controller parameters for a nonlinear process. The process used in this study is the mixing process which is a multivariable and intrinsically non-linear plant...

CHaRy is a software system to support the synthesis of periodic controller applications, where hard real-time conditions must be guaranteed for software tasks. Due to complexity reasons, CHaRy decomposes the overall problem of implementing periodic controllers on parallel embedded computers to the sub-problems partitioning, timing analysis, allocation and schedulability analysis. This rigourous...

The DECchip 21066 microprocessor is the first Alpha AXP microprocessor to target cost-focused system applications and the second in a family of chips to implement the Alpha AXP architecture. The chip is a 0.675-micrometer (μm), CMOS-based, superscalar, superpipelined processor that uses dual instruction issue. It incorporates a high level of system integration to provide best-in-class system pe...