نتایج جستجو برای: time and space compression

تعداد نتایج: 17064130  

2002
Bong-Soo Sohn Chandrajit Bajaj Sanghun Park Vinay K. Siddavanahalli

In this paper, we describe a compression scheme for volumetric video data(3D space 1D time) where each frame of the volume is decompressed and rendered in real-time. Since even one frame size of volume is very large, run-time decompression can be a bottleneck for real-time playback of time-varying volume data. To increase the run-time decompression speed and compression ratio, we decompose the ...

2008
Jennie Rogers

Compression allows scalable storage of large amounts of data and alleviates the I/O bottleneck for dataintensive applications. Over the years, a large number of compression algorithms have been developed to support various data types. Our goal is to develop a generic tool that helps quickly and accurately decide what compression scheme(s) best match the constraints and expectations of users wit...

2010
Igor Bisio Fabio Lavagetto Mario Marchese

In deep communications systems bandwidth availability, storage and computational capacity play a crucial role and represent precious, as well as limited, communications resources. Starting from this consideration, high efficient image compression coding algorithms may represent a key solution to optimize the resources employment. In this paper two possible approaches have been considered: JPEG2...

Journal: :Int. J. Found. Comput. Sci. 1990
Jyrki Katajainen Erkki Mäkinen

Different methods for compressing trees are surveyed and developed. Tree compression can be seen as a trade-off problem between time and space in which we can choose different strategies depending on whether we prefer better compression results or more efficient operations in the compressed structure. Of special interest is the case where space can be saved while preserving the functionality of...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده علوم پایه 1390

abstract in this study, we synthesized a novel template polymer by using methacrylic acid (mma) as functional monomer, ethylene glycol dimethacrylate(egdma) as cross linker, 2,2-azobisisobutyronitrile (aibn) as initiator and olanzapine as targeted molecule in the presence of chloroform and acetonitrile as solvent. the products have been characterized and confirmed by (chn)elemental analysis,...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1391

in this work, a novel and fast method for direct analysis of volatile compounds (davc) of medicinal plants has been developed by holding a filament from different parts of a plant in the gc injection port. the extraction and analysis of volatile components of a small amount of plant were carried out in one-step without any sample preparation. after optimization of temperature, extraction time a...

Background & Importance: Primary hemifacial spasm is usually caused by microvascular compression of the facial nerve at its root exit zone at brainstem without any space-occupying pathology. Secondary or so-called symptomatic hemifacial spasm has an additional underlying pathology e.g. tumors leading to the microvascular compression. We review and discuss the pathophysiology and the literature ...

Journal: :Canadian Medical Association Journal 2017

2007
Tomasz Wierzbicki

Padded-sorting is a task of placing input items in an array in a nondecreasing order, but with free space between consecutive elements allowed. For many applications, padded-sorting is as useful as sorting. Approximate compaction and compression are closely related problems. It is known that time complexity of padded-sorting on randomized CRCW PRAMs is dramatically lower than time complexity of...

Ashraf , Ali, Hasavari , Farideh, Hoseini, Javad, Kazemnejad leily, Ehsan, Khaleghdost Mohammadi, Tahereh, Yosefnia Darzi , Farkhondeh,

Abstract Introduction: Accumulation of secretions in airways is a serious complication in intubated and mechanically ventilated patients. Tracheal suctioning which is done with the aim of secretion removal can be used in conjunction with physiotherapy for effective airway clearance and improving gas exchange. Objective: The aim of study was to determine the effects of rib cage compression befor...

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