We give a full enumeration of extended cyclic affine-invariant codes of length 2 to power n over the binary field and over the ring of integers modulo 4 for n < or = 8.
In this paper, we will use the Tau method to develop an iterative methods for solving nonlinear fractional differential equations.
In this work, we deal with the pricing problem for a specific type of Exotic options: the Asian options. We consider a modified Black-Scholes model where the volatility is high. One approach to valuing options is the Partial Differential Equation (P.D.E) method. After setting up the model, we derive the P.D.E of the Asian option price.
The detection and tracking of targets in remote sensing images is essential given the increased dimensionality of data both spatially and spectrally. Current algorithms cannot cope with the increased data complexity of remote sensing imagery. In this work, a novel efficient and effective multi-layer multi-scale fusion framework is proposed as a solution to the target detection problem. This work is expected to advance the field of remote sensing image analysis especially when it comes to information retrieval in large datasets of imagery data. This work also presents unprecedented research on UAE's national satellite (i.e., DubaiSat-1).
Image segmentation is an essential preprocessing step for many computer vision and image processing applications. Implementing algorithms that0 handle such images in hardware will speed up the processing task considerably. In this paper, a new robust histogram-based image segmentation ASIC design of a System-on-Chip (SoC) using 65nm technology is presented. With a clock frequency of 289 MHz, the SoC can reach a frame rate of a 4410 FPS for an image resolution of 256?256. This is few order of magnitudes faster than the FPGA implementation in the literature. The finished-chip details renders it suitable for real-time and mobile applications.
Scale Deposition in pipelines is becoming a major concern to oil companies. This causes severe problems such as those related to well integrity, reduced production and sensors failures which will affect the overall well performance. In this paper, we present an approach for the detection of scale deposition using light sensing techniques. We have successfully detected scale deposition within a short time after the scaling process was triggered. The experimental setup, theoretical consideration and the results are discussed.
The early detection of cancer disease can improve survival rate by allowing a wider range of medical treatments for the patients. Mammography or CT scans are believed to be an effective tool to help radiologists to diagnose and detect many types of the cancer cells at the early stages. Medical imaging is a leading role in modern diagnosis and contrast enhancement of medical image is useful in helping radiologist or doctors to detect abnormal regions. In recent years, many image enhancement techniques have been developed to improve the quality of medical images such as X-ray, MRI, and CT scans. Image enhancement techniques can improve the quality of the CT scan images with enhancing the details of key features, like the shape of the cancer cell. For medical images, image enhancement is very useful as medical images are poorly illuminated and many of the important structures are hardly visible.
A novel multiple watermarking scheme based on spatial and discrete cosine transform domains is proposed. The scheme allows the physician to define regions of interest to keep diagnostic value intact. The rest part of the image casts multiple watermarks conveying the patient's identification (ID) for ownership detection, and additional information for the purpose of integrity control and source authentication. In or-der to increase data robustness, each single digit in patient's ID is represented using a unique binary code and all the codes are highly uncorrelated to each others. The experimental results demonstrate the efficiency of the scheme in terms of robust-ness, imperceptibility, and integrity control.
Polymer flooding is a well-established chemical EOR technique. However, its application in high temperature, high salinity carbonate reservoirs is still a very challenging task due to unavailability of polymers which can withstand these harsh reservoir conditions. A polymer screening study has been conducted on a series of polymers, to identify the most suitable candidate that can tolerate these harsh reservoir conditions. Initially, a polymer screening study has been conducted through rheological measurements on a series of polymers which can withstand high temperature and high salinity conditions followed by filterability, injectability, adsorption, mechanical and thermal stability testing as a screening criterion for polymers in EOR operations. Amongst the tested polymers polyacrylamide based co- and ter-polymers showed reasonable temperature stability but very poor salinity tolerance. On the other hand, biopolymer a polysaccharide showed shear thinning behavior with excellent thermal stability at 120 ?C under anaerobic conditions and salt tolerance upto 220 g/l.
This project aims at developing Digital Rock Physics (DRP) as the novel and future reservoir engineering simulation tool, especially as applied to the super giant carbonate reservoirs of Abu Dhabi. The approach is to use an ascending scale of integration of experimental and numerical modeling techniques from the nano-scale offered by a dual Focalized Ion Beam- Scanning Electron Microscope (FIB-SEM) nanotomography, through nano-, micro- and macro-XCT (X-ray Computer Tomography) and all the way to whole core analysis offered by a tri-axial-stress core-flooding machine that operates under reservoir conditions. The nano, micro, and macro scale tomography is used to extract the complex pore scale and solid matrix network to be used within simulators for the correct prediction of average macroscopic properties (porosity, permeability, formation factor, capillary pressure, relative permeability, and elastic and shear moduli) of carbonate rocks. Experimental results are used to validate the simulation results.
