With the wide application of computers in various industries, Computer Aided Design (CAD) has become the measurement criteria for the development degree of national modernization of science and technology, as well as industrial modernization. CAD needs to perform information processing to whole process of product design, including geometric modeling, engineering drawing, calculation and analysi...

The manufacturing and installation of xtures in a factory can be costly, especially for high-volumeproduction runs. Once xtures are installed, part shape can vary due to: (1) tolerance variations because of inherent im-precision in manufacturing processes, and (2) redesign. Variations of type (1) occur constantly and are usually small; variations of type (2) can be large but occur at few distin...

in order to study stress tolerance indices and identifying tolerance genotypes to drought stress condition 16 genotypes of durum wheat were assessed in a randomized complete block design with four replications under two irrigated and rainfed conditions in the research station located in west of iran ilam in 2006- 2007. results showed that variation in among durum wheat genotypes under irrigated...

Traditionally, transportation engineering students have used engineering drawing techniques to manually lay out lines and curves over contour maps for highway geometric design. The design process requires numerous calculations of stopping sight distance, minimum turning radius, and curve alignments to minimize economic and environmental impact and construction costs. Students usually perform it...

Structural optimization has recently received wide range attention in computer aided design. One of the reasons is rapid development of so vhisticated but inexpensive engineering workstations with graphic capabilities, multi-windows and fast computation. The other reason is acceptance by people in industry of various computer aided engineering systems including reliable analysis capability such...

Computer-Aided Geometric Design modelers are now based on powerful mathematical curve and surface models, but there is still a considerable need for efficient tools to handle, analyze and modify these objects. Designing product shapes using geometric operations on free-form curves and surfaces is still a tedious task. Moreover, designers would prefer to use meaningful tools to concentrate on de...

efficient system design and training human resources with the necessary skills is essential for every organization. managers' skills in using information technology results in greater efficiency at work and make decisions based on the information. this study investigates the design quality criteria and standards for rfid technology strategic management of university libraries is discussed. the ...

The maneuvering problem involves two tasks. The first, called the geometric task, is to force the system output to converge to a desired path continuously parametrized by a scalar θ. The second task, called the dynamic task, is to satisfy a desired dynamic behavior along the path. In this paper, this dynamic behavior is further specified as a speed assignment for θ(t). While the main concern is...

This paper presents an algorithm for automatically computing the planar patterns of custom-made assistive medical braces, which are employed to restrict the motion of the joints (such as wrist and knee) that suffer from musculoskeletal disorders caused by repetitive strain injuries. An elastic brace is manufactured by warping a planar elastic fabric pattern. With a specified material, different...