endurance time (et) method is a relatively new performance-based earthquake method for structural evaluation and design. in this method, the structure is subjected to a gradually intensifying accelorogram(s) and its performance is assessed based on the maximum time duration that it can meet the specified performance objectives. using moment-resisting and braced frames which are rehabilitated by...

1 This work was undertaken as the Electronics and Telecommunications Engineering degree Final Project of its two first authors. Abstract The design, implementation and performance tests of an Si LDMOS-Based power amplifier for UHF is presented. The amplifier, conceived for medium power GSM-900 base-station applications, consists of a Class-AB single stage circuit designed for maximum output pow...

The computational fluid dynamics is concentrated on the forced air cooling of the CPU using a heat sink. This paper utilizes CFD to identify a cooling solution for a desktop computer, which uses an 80 W CPU maximum whereas this number will be increased in the range of 70-120W in the forthcoming desktop computer systems. This paper considers the optimal plate fin heat sink design and cylindrical...

Indonesian Navy (TNI AL) is the main component for Maritime Security and Defence. Because of that, TNI AL needs Indonesian Warship (KRI) to covered Maritime area. The main requirement from KRI is fulfilled by demand. To pock of fuel demand from KRI at Naval Base, it needs a new pipeline of fuel distribution network system. The pipeline network system used for maximum lifetime must be protected ...

A water jet machining is an industrial tool capable of cutting a wide variety of materials using a very high-pressure jet of water, or a mixture of water and an abrasive substance. This paper addresses the concept of the Intelligent knowledge base system (IKBS) for optimization of product design and manufacturing process for water jet machining in computer based concurrent engineering environme...

Modified forms of DNA are under intense research because of their potential applications in nanotechnology and medical science. In the present work, comprehensive theoretical investigations into the structural, electronic, and optical properties of four newly designed thieno-expanded base analogs, namely ttA, ttG, ttX, and ttHX, have been performed. The results are compared against the findings...

ABSTRACT Solution spaces are sets of designs that meet all quantitative requirements a given design problem, aiding requirement management. In previous works, ways calculating subsets the complete solution space as hyper-boxes, corresponding to collection permissible intervals for variables, were developed. These can be used formulate independent component with built-in tolerance. However, thes...