نتایج جستجو برای: flash chromatography

تعداد نتایج: 124038  

2013

Organic Flash Cycle (OFC) has potential of improving efficiency for recovery of low temperature heat sources mainly due to reducing temperature mismatch in the heat exchanger. In this work exergetical performance analysis of ORC is conducted for recovery of low grade heat source. Effects of system parameters such as flash evaporation temperature or heating temperature are theoretically investig...

2010
Yanfei Lv Xuexuan Chen Bin Cui

Flash memory has been gaining more popularity as a substitution for magnetic disk. However, due to asymmetric IO latency, cache management policy needs to be reconsidered in systems equipped with flash. A novel buffer replacement approach named ACAR, which stands for Adaptive Cost Aware cache Replacement, is proposed in this paper to address this problem. Taking operation cost into consideratio...

2011
David H. Foster DAVID H. FOSTER

In the visual masking effect, metacontrast, the perceived brightness, of a flash of light is reduced by the presentation of a second flash in an adjacent region of the visual field . A metacontrast masking interaction between different colour mechanisms is examined in the present study . The spectral compositions and intensities of the stimuli are chosen so that the first (test) flash preferent...

2011
Sang-Won Lee

Flash memory based SSDs (flash SSDs) are becoming popular as an alternative storage to harddisk, and it is not unrealistic to witness in the foreseeable future that flash SSDs replace harddisks as the main secondary storage in enterprise databases. In fact, Oracle has already started to use flash SSDs as its main storage in performing TPC-C benchmark [1]. In this talk, we will outline some pers...

2017
Igor S. Stievano Ivan A. Maio Flavio G. Canavero

2001
Jen-Chieh Yeh Chi-Feng Wu Kuo-Liang Cheng Yung-Fa Chou Chih-Tsun Huang Cheng-Wen Wu

Flash memories are a type of non-volatile memory based on floating-gate transistors. The use of commodity and embedded flash memories are growing rapidly as we enter the system-on-chip (SOC) era. Conventional tests for flash memories are usually ad hoc—the test procedure is developed for a specific design. We propose improved March-like algorithms (i.e., March FT) for both bit-oriented and word...

2009
Kevin M. Greenan Ethan L. Miller Thomas J. E. Schwarz Avani Wildani

Adding flash memory to the storage hierarchy has recently gained a great deal of attention in both industry and academia. Decreasing cost, low power utilization and improved performance has sparked this interest. Flash reliability is a weakness that must be overcome in order for the storage industry to fully adopt flash for persistent storage in mission-critical systems such as high-end storage...

2009
NEIL STEWART Stian Reimers Neil Stewart

Adobe Flash can be used to run complex psychological experiments over the web. We examine the reliability of using Flash to measure reaction times (RTs), using a simple binary choice task, implemented both in Flash and using a Linux-based system known to record RTs with millisecond accuracy. Twenty-four participants were tested in the laboratory using both implementations; they also completed t...

Journal: :CoRR 2013
Srimugunthan K. Gopinath

— For large scale distributed storage systems, flash memories are an excellent choice because flash memories consume less power, take lesser floor space for a target throughput and provide faster access to data. In a traditional distributed filesystem, even distribution is required to ensure load-balancing, balanced space utilisation and failure tolerance. In the presence of flash memories, in ...

Journal: :PVLDB 2011
Philippe Bonnet Luc Bouganim Ioannis Koltsidas Stratis Viglas

Flash devices are emerging as a replacement for disks. How does this evolution impact the design of data management systems? While flash devices have been available for years, this question is still open. In this tutorial, we share two views on the development of data management systems for flash devices. The first view considers that flash devices introduce so much complexity that it is necess...

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