spinal epidural haemorrhage may present as back pain associated with radicular symptoms and can be a catastrophic clinical scenario with progression to paraplegia or even sudden death. being a rare entity, it needs a high index ofclinical suspicion to diagnose it. fractures have been documented as a cause of hematorrachis but such hematomas only extend to one or two vertebral segments. large ep...

a 19-year-old man presented with a 5-year history of back pain radiating to the lower extremities and paresthesis of the toes during the last year. plain x-ray revealed a large cauliflower shaped exophytic mass at the level of t8, t9 and t10 vertebrae. computed tomography (ct) and magnetic resonance imaging (mri) showed an abnormal bony mass arising from the posterior arch of t9 with protrusion...

although death is a gradual process, sometimes sudden death occurs in a fraction of a minute or seconds. here we report a 49-year-old man without any underlying disease, which has instantly died in an accident scene due to compression of neck critical elements by a three-point seat belt. the examination of the body and the results of the autopsy, toxicology and pathology tests are described fro...

The change in water particle diameters injected into the vapor compression process, the water phase temperature and the vapor phase temperature were measured in the compression process. The experimental conditions were approx. 2 at a compression ratio under 100 kPa in pressure, 340-390 Kin temperature range, 2-8 Hz in rotational speed. The mass ratio of injected water was small: in the order of...

Compression of powders and granules into cohesive mass is a complex and irreversible dynamic process. Mechanically, the compaction process consists of progressive strain on the powder mixture confiding it to a final volume and porosity. Compression of pellets into the tablet form is more complex. It should be taken into consideration not only pellets properties (their compressibility, shape, po...

Digital video compression technologies have become an essential part of motion estimation technique. The motion estimation of H.264/AVC is a time consuming process. Many algorithms were proposed for the video stream motion estimation, but they have a high computational complexity which significantly increases the encoder complexity. This paper proposes the Modified Unsymmetrical-Cross Multi Hex...

This paper presents a lossy compression method for motion capture data. Each degree of freedom of a motion clip is smoothed by an anisotropic diffusion process and then divided into segments at feature discontinuities. Feature discontinuities are identified by the zero crossings of the second derivative in the smoothed data. Finally, each segment of each degree of freedom is approximated by a c...

Compression of speech signal is an important field in digital signal processing. Because of limited bandwidth in many fields especially in the field of military speech compression has a significant importance in the present world. The other reasons for speech compression are limited transmission and storage capacity. The process of converting human speech signals into encoded representation the...

Delta compression, a promising data reduction approach capable of finding the small differences (i.e., delta) among very similar files and chunks, is widely used for optimizing replicate synchronization, backup/archival storage, cache compression, etc. However, delta compression is costly because of its time-consuming wordmatching operations for delta calculation. Our indepth examination sugges...

— In recent years, there is a spurt of publications on Information Theory based Image Compression Techniques. Specific regional characteristics of the images are associated with Information clusters. In this paper a novel approach of information theory based Minimum Relative Entropy (MRE) and Entropy methods for image compression are discussed. A two stage compression process is performed throu...