نتایج جستجو برای: cosine aftertreatment techniques
تعداد نتایج: 639159 فیلتر نتایج به سال:
| In this paper we propose two feature extraction techniques, termed DCT-mod and DCT-delta, for use in an illumination invariant face based identity veri cation system. We compare the performance of the proposed techniques against two standard methods: Principal Component Analysis (PCA) and the 2-D Discrete Cosine Transform (DCT). Experiments on the VidTIMIT database support the use of the prop...
California and Federal emissions regulations for 2007 and newer heavy-duty diesel engines require an order of magnitude reduction in particulate matter and oxides of nitrogen spurring the introduction of new aftertreatment systems. Since 2008, four emission measurement campaigns have been conducted at a Port of Los Angeles location and an inland weigh station in the South Coast Air Basin of Cal...
Diesel particulate filters are the most useful technology to reduce particulate matter from the exhaust gas of internal combustion engines. Although these devices have suffered an intense development in terms of the management of filtration and regeneration, the effect of the system location on the engine performance is still a key issue that needs to be properly addressed. The present work is ...
Yann Guezennec, Shawn Midlam-Mohler, Makoto Tateno and Mike Hopka Center for automotive Research and Intelligent Transportation Ohio State University 930 Kinnear Road Columbus, OH 43212 USA Abstract: A two-stage approach to Diesel emission management in Diesel Hybrid Electric Vehicles is presented. The first aspect of this work focuses on a supervisory control strategy for charge-sustaining, ...
Electrical Department, V.J.T.I. Mumbai Abstract In recent researches, there are countless applications where sine and cosine wave are used, like in Physics, Digital Signal Processing for various transforms, several modulation and demodulation techniques etc. There are numerous ways to generate digital sine and cosine waves, the use of previously calculated tables is one of the choices, but it r...
Selectivity estimation is an important task for query optimization. The common data mining techniques are not applicable on large, fast and continuous data streams as they require one pass processing of data. These requirements make Range Query Estimation (RQE) a challenging task. We propose a technique to perform RQE using micro-clustering. The technique maintains cluster statistics in terms o...
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