نتایج جستجو برای: electric spark
تعداد نتایج: 151691 فیلتر نتایج به سال:
تاکنون تحقیقات زیادی به منظور مدل سازی فیزیکی کامل و دقیق فرآیند ماشینکاری تخلیه الکتریکی (edm) صورت گرفته که به دلیل پیچیدگی مکانیزم براده برداری بی نتیجه مانده اند در این تحقیق از شبکه های عصبی پرسپترون چند لایه (mlp) و rbf به منظور مدل سازی این فرایند استفاده شده است جریان، ولتاژ و دوره تناوب پالس ها به عنوان ورودی های شبکه و نرخ براده برداری و صافی سطح خروجی های شبکه می باشند. آموزش شبکه ها...
In this article, the electrode erosion and the gap growth of spark plugs were measured on of a CNG fueled engine after durability tests. Then, the required ignition voltage and the spark quality were investigated by a spark plug test rig. Considering results of measurements, the gap growth increased as the running time increased. Thus, the gap growth of spark plugs with 200 and 280 hours runnin...
The role of components in an Electrostatic Precipitator (EP) for a spark and both the phenomenon and mechanism of a spark are elaborated and then the type of spark is classified by the condition of shortage between the discharge and collecting electrodes. The secondary voltage and current waveforms of a spark are discussed in order to address the severe effect of the secondary and primary curre...
Abstract Nitrogen fixation, production of NO and 2 from N O in air, has been investigated with transient spark self-pulsing DC discharges. is boosted by the addition capacitors an inductor to electrical circuit which drives discharge. The quantity produced per joule input energy doubled, though drops. yield also increased because modified enables higher discharge currents be used. concentration...
The aim of this project is to introduce Spark Clouds, which integrate spark lines into a tag cloud to convey trends between multiple tag clouds. Spark Clouds ability is to show trends compares favorably to the alternative visualizations. In the Existing System, Tag clouds are used to display the relative tag frequency, popularity, or importance by font size. They serve as a visual summary of do...
Decision tree is one of the most widely used classification methods. For massive data processing, MapReduce is a good choice. Whereas, MapReduce is not suitable for iterative algorithms. The programming model of Spark is proposed as a memory-based framework that is fit for iterative algorithms and interactive data mining. In this paper, C4.5 is implemented on both MapReduce and Spark. The resul...
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