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This article is a demonstrative study about the problem and size of addiction in western area especially Taif city in Saudi Arabia through applying of international questionnaires guidelines. These questionnaires were used to assess tobacco, alcohol, and narcotics addiction. They were performed on secondary school male students in Taif ,Saudi Arabia, in addition to Roshd and Kafa and population as well. The total sample size for the present study is equal to 2514
A crankshaft contains two or more centrally-located coaxial cylindrical ("main") journals and one or more offset cylindrical crankpin ("rod") journals. The design of the Crankshaft considers the dynamic loading and the optimization an lead to a shaft diameter satisfying the requirements of Automobile’s specifications with cost and size effectiveness. Microsoft visual studio package was used in the development of this software, which is capable of designing the shaft with reference to its easy interface, being an open system and its ease of file formats acceptability. It was used during the entire cycle of this software development (analysis phase, design phase and implementation phase).
This paper presents an efficient VLSI architecture for a 4x4 64-QAM multiple-input–multiple-output (MIMO) detector. The augmentation is done by on demand expansion of intermediate nodes of the tree rather than exhaustively, along with pipelined distributed sorters. The proposed architecture has a stable critical path independent of constellation size, scalable to higher number of antennas with efficient distributed sorters. Further, modification will be carried out with the faster multiplication unit to make it scalable to higher number of antennas.
This paper presents Computational Fluid Dynamics (CFD) analysis of Pelton turbine of Khimti Hydropower in Nepal. The purpose of CFD analysis is to determine torque generated by the turbine and pressure distributions in bucket for further work on fatigue analysis. The CFD analysis is carried out on model size Pelton runner reduced at 1:3.5 scale to minimize computational cost and time. The operating conditions for model size runner is selected in accordance with IEC 60193 and IEC 1116. The paper describes the methods used for CFD analysis using ANSYS CFX software. 3 buckets are used to predict the flow behavior of complete Pelton turbine. k-ε and SST turbulence model with interphase transfer method as free surface and mixture model is compared in the paper. The pressure distribution is found maximum at bucket tip and runner Pitch Circle Diameter (PCD). The torque generated by the middle bucket is replicated over time to determine total torque generated by Pelton turbine.
1888 Press Release - The threats seem to be around every virtual corner and companies are trying to find methods to defend against them. One simple way is widespread and effective user awareness education of every individual in a company, which can help businesses of any size reduce the risk of a cyber breach.
Elite Certification offers CE Marking Certification in India, to create EU safety, health, environmental protection, and economic values for the long term to any size or type of business.
Many times you face with car paint problems, such as car’s paint getting chipped off due to one reason or other. This can happen by chance when your car scratched past against a wall or a bush, or a lorry truck tossed few marble size stone chips on your car’s hood while changing lanes, ripping off the car’s paint on several places.
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Network coding has been recently applied to wireless networks to increase throughput. Back-pressure type algorithms based on the algorithmby Tassiulas and Ephremides have recently receivedmuch attention for jointly routing and scheduling over multi-hopwireless networks. we explore the performance of backpressure routing and scheduling for TCP flows over wireless networks. TCP and backpressure are not compatible due to a mismatch between the congestion control mechanism of TCP and the queue size based routing and scheduling of the backpressure framework. We decouple the routing and scheduling components of the algorithm by designing a probabilistic routing table that is used to route packets to per-destination queues. The scheduling decisions in the case of wireless networks are made using counters called shadow queues.
Transistor is the major invention in electronics field, vacuums tubes are used in older times. But vacuum tubes have lot of drawbacks when comparing with transistor like their large size high power consumption etc. So transistor will easily replace vacuum tubes because transistors are small size, low power consumption cheap etc. but transistor can't completely replace these vacuum tubes because transistor can't work In high frequency application and also transistor will almost hit its minimum size further reduction in size is not easy so need a better replacement. Nano size vacuum tubes are better option.