The FBI has formulated national standards for digitization and compression of gray-scale fingerprint images. The compression algorithm for the digitized images is based on adaptive uniform scalar quantization of a discrete wavelet transform subband decomposition, a technique referred to as the wavelet/scalar quantization method. The algorithm produces archival-quality images at compression rati...

An existing coupon compression fixture was modified for testing cylindrical coupon samples of pultruded material in compression. Then a new fixture was developed for testing full-size structural shapes, which presents all the advantages of the coupon fixture. Particularly, splitting of the end of the sample is prevented while reducing the stress concentration factor at the ends, yielding compre...

The mechanical properties of porous ceramics are greatly influenced by their microstructure. Therefore, mechanical behavior of highly porous ceramics is different from that of dense ceramics. In this work, we evaluate different mechanical testing methods such as static compression, Brazilian disc test and 3-point bending on their suitability for comparison of highly porous ceramic materials. It...

This paper describes the design of a retractable intramedullary nail for the humerus that does not require inter-locking screws. The developed nail has a series of fins which open out from the casing to grip the medullary canal of the bone, thus securing it in position. Prototypes of the nail have been mechanically tested using static compression, dynamic compression and static torsion tests. D...

We present an analysis of test application time for test data compression techniques that are used for reducing test data volume and testing time in system-on-a-chip (SOC) designs. These techniques are based on data compression codes and on-chip decompression. The compression/decompression scheme decreases test data volume and the amount of data that has to be transported from the tester to the...

An existing coupon compression fixture was modified for testing cylindrical coupon samples of a pultruded material in compression. Then a new fixture was developed for testing full-sized structural shapes, which presents all the advantages of the coupon fixture. Particularly, splitting of the end of the sample is prevented while reducing the stress concentration factor at the ends, yielding com...

Linear Predictive Coding (LPC) is used for analysis and compression of speech signals. Whereas Huffman coding is used forElectrocardiogram (ECG) signal compression. This paper presents a hybrid compression technique for ECG signal using modifiedHuffman encoding andLPC.The aim of this paper is to apply the linear prediction coding and modified Huffman coding for analysis, compression and predict...

In this study, we compare the behavior of confined compression-tested concrete test pieces and short beams subjected to three-point flexural strength testing when they are reinforced with high-modulus, high-strength carbon fibers polymers (CFRP). The fabrics used have roughly same mechanical capacity but very different rigidities. As such, results make it possible obtain influence rigidity CFRP...

In recent years, several research activities have been conducted to develop knowledge in analysis, design and optimization of compressor anti-surge control system. Since the anti-surge control testing on a full-scale compressor is limited to possible consequences of failure, and also the experimental facility can be expensive to set up control strategies and logic, design process often involves...