Saleh Alghamdi

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—The aim of this paper is to describe a new Navigation technique to assist the blind and people with low vision to reach their destinations in an indoor environment. The proposed technique is based on our previous positioning technique using active Radio-frequency identification (RFID) technology. A Global Positioning System (GPS) does not work efficiently(More)
—The aim of this paper is to develop a new positioning technique to assist the blind and people with low vision to indicate their locations and reach their destinations. The presented technique is based on a combination of power level and Signal Strength Indicator (SSI) using active Radio Frequency Identification RFID technology. The system uses a mobile(More)
—E-Government increases transparency and improves communication between the government and the users. However, users' adoption and usage is less than satisfactory in many countries , particularly in developing countries. This is a significant factor that can lead to e-Government failure and, therefore, to the waste of budget and effort. Unlike much research(More)
The aim of this paper is to describe a new positioning technique to assist the blind and people with low vision to indicate their location and reach their destinations in both indoor and outdoor environments. The proposed technique is based on a combination of power attenuation and a signal strength indicator (SSI) using active Radio-frequency(More)
CTEN/TNS4 is an oncogene in colorectal cancer (CRC) which enhances cell motility although the mechanism of Cten regulation is unknown. We found an association between high Cten expression and KRAS/BRAF mutation in a series of CRC cell lines (p = 0.03) and hypothesised that Kras may regulate Cten. To test this, Kras was knocked-down (using small interfering(More)
OBJECTIVES CD34+ cells and colony forming unit-granulocyte and macrophage (CFU-GM) from human bone marrow were used to investigate the role of Fas/FasL system in the regulation of myelopoiesis. METHODS Fas and FasL expression in CD34+ cells and in day 14 CFU-GM were measured by RT-PCR and immunofluorescence respectively. The functional assays for the(More)
Wnt signalling and the signal transducer and activator of transcription 3 (STAT3) are oncogenic signalling pathways which are deregulated in colorectal cancer (CRC). Here we investigated the interaction of these two pathways. Firstly, we investigated biochemical interaction by inhibiting STAT3 and β-catenin (through gene knock-down and dominant-negative(More)
The aim of this study is to demonstrate the hypothesis that the experience of the surgeon is sufficient to partially compensate for the lack of haptic feedback of the robotic system da Vinci Si HD (Intuitive (®) ). Twenty-five international surgeons belonging to different areas of surgical specialization were divided into two groups of investigation:(More)
—Providing e-Government services to business sector is a fundamental mission of governmental agencies in Saudi Arabia. The adoption of e-Government systems is less than satisfactory in many countries, particularly in developing countries .One pertinent, unanswered question is what are the key factors that influence the adoption and utilisation level of(More)