625 research outputs found

    Exploring Determinants in Deploying Mobile Commerce Technology: Amman Stock Exchange

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    The purpose of this research is to explore the critical determinants that affect the intention of the users to deploy mobile commerce technology in Amman Stock Exchange. This research applied TAM model using the following variables: perceived trust, perceived usefulness, perceived ease of use, social and cultural values, and economic issues. The result of the distributed 210 questionnaires to mobile commerce users in Amman Stock Exchange (Brokers and Investors), and 179 were returned correct and studied, reveal that perceived trust, perceived usefulness, perceived ease of use, social and cultural values have significant association with intention to deploy mobile commerce technology while economical issue is not significant. The results of the research indicate that TAM have capability in exploring critical determinants that affecting the intention to deploy mobile commerce technology in Jordanian marketplace, therefore ,further studies are recommended to explore the critical determinants of deploying mobile commerce technology in other economic sectors

    Functional/thermal verification and validation of an S-band radio for the nanosatellites

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    © 2018 COSPAR An S-band radio designed with commercial-grade components for the nanosatellites is functionally and thermally characterized for quiet transmission. The QPSK modulation impairments are minor over −20 °C to +50 °C at 24, 26, 28 and 30 dBm RF levels. The channel response is linear in error vector magnitude, frequency, phase, amplitude and IQ errors. On the average, the stability of amplifier bias and nonlinearity gives −22 dBc maximum upper/lower adjacent channel power and 1.27 MHz occupied channel bandwidth. The acceptable level test results provide good confidence toward robust space-to-earth transmission in variable solar weather at low earth orbital altitudes

    The Cytotoxic Effect of 2-Deoxy-D-Glucose Combination with 5-Fluorourasil and NO-Aspirin on Mammary Adenocacinoma Cell Line

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    2-deoxy-D-glucose (2DG) and NO-Aspirin (NO-ASA) are new anticancer agents that are under intense clinical investigation for their remarkable cytotoxic activity. Combining 2DG, which targets glucose metabolism, with other agents mainly the DNA- and the mitochondrial-damaging agents represent a promising chemotherapeutic strategy.  In this study, we investigated the cytotoxic effects of 2DG, 5-fluorourasil (5FU), and NO-ASA on AMN3 breast cancer model, in addition to the cytotoxic effects of 2DG combination with 5FU and NO-ASA on the same cells. The cytotoxic activity of 2DG, 5FU, and NO-ASA was measured by using the MTT assay at 24, 48, and 72 hr. Then 2DG was combined with 5FU and NO-ASA in a constant concentration ratio based on their corresponding IC50s and the inhibition of cell growth was measured by MTT assay at 72hr. Median effect analysis was conducted to determine the cytotoxic activity of the combinations. 2DG, 5FU, and NO-ASA were found to exert a significant dose- and time-dependant growth inhibition on AMN3 cells. The mean combination index values reveal an additive effect for both combinations. This study demonstrated that 2DG and NO-ASA are capable of inhibiting the breast tumor growth effectively. It also shows that 2DG/5FU and 2DG/NO-ASA combinations result in mean additive effects with good dose reduction index values that have the advantages of reducing the toxicity, adverse effects, and the drug resistance in cancer patients. Key words: 2-deoxy-D-glucose (2DG), NO-Aspirin (NO-ASA), 5-fluorourasil (5FU), Glucose metabolism, Median effect analysis, Breast cance

    Exploring Critical Determinants in Deploying Mobile Commerce Technology

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    Problem statement: The research's problem lies in the fact that deploying m-commerce technology in Jordan represent the first serious trail to understand and explore the critical determinants that affect deploying mobile commerce technology. Approach: This research applied TAM model using the following variables: Perceived trust, perceived usefulness, perceived ease of use, social and cultural values and economic issues to explore determinants. Results: The result of the distributed 210 questionnaires to mobile commerce users in Amman Stock Exchange (Brokers and Investors) and 179 were returned correct and studied, reveal that perceived trust, perceived usefulness, perceived ease of use, social and cultural values have significant association with intention to deploy mobile commerce technology while economical issue is not significant. Conclusion: The results of the research indicate that TAM have capability in exploring critical determinants that affecting the intention to deploy mobile commerce technology in Jordanian marketplace, therefore, further studies are recommended to explore the critical determinants of deploying mobile commerce technology in other economic sectors

    Gastrointestinal Basidiobolomycosis Mimicking Colon Cancer in a Sudanese Patient

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    Basidiobolomycosisis a rare disease caused by the fungus Basidiobolus ranarum. The incidence Rate of Gastrointestinal Basidiobolomycosis is approximately 1 in 45,333,334 or 0.00% in every 5 people in USA), member of the class Zygomycetes found worldwide (1).Basidiobolomycosis is usually a subcutaneous infection but rarely gastrointestinal1. This fungus is found mainly in the soil and on decaying vegetations2. It has been isolated from the banks of tropical rivers in West Africa, and has also been found in association with some insects2. The fungus is known to be present in the gastrointestinal tracts of reptiles, amphibians, and some bat species3. Definitive diagnosis requires culture and serological testing may be helpful. The fungal morphology and the Splendore-Hoeppli phenomenon are characteristic histological features. Basidiobolomycosis is treated with surgical resection and itracanzole 200mg BD for three months or Amphotericin B 5mg /kg iv/24 hrs4.Keywords: Zygomycetes, vegetations, subcutaneous infection.

    On generalization closed set and generalized continuity OnIntuitionistic Topological spaces

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    Abstract: In this paper, we continue the study of generalized closed sets in ITS, and related to each other’s and with known’s closed sets. We introduce also, different kinds of g-continuity and related to each other’s and with known continuity in ITS

    SPACE MOUSE

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    Space mouse opens a new age for man-machine communication. This device is based on the technology used to control the first robot in space and has been adapted for a wide range of tasks including mechanical design, real time video animation and visual simulation. It has become a standard input device for interactive motion control of three-dimensional graphic objects in up to six degrees of freedom. Space mouse works with standard serial mouse interface without an additional power supply. The ergonomic design allows the human hand to rest on it without fatigue. Thus flying an object in six degrees of freedom is done without any strain. Every day of your computing life, you reach out for the mouse whenever you want to move the cursor or activate something. The mouse senses your motion and your clicks and sends them to the computer so it can respond appropriately. An ordinary mouse detects motion in the X and Y plane and acts as a two dimensional controller. It is not well suited for people to use in a 3D graphics environment. Space Mouse is a professional 3D controller specifically designed for manipulating objects in a 3D environment. It permits the simultaneous control of all six degrees of freedom - translation rotation or a combination. . The device serves as an intuitive man-machine interface The predecessor of the spacemouse was the DLR controller ball. Spacemouse has its origins in the late seventies when the DLR (German Aerospace Research Establishment) started research in its robotics and system dynamics division on devices with six degrees of freedom (6 dof) for controlling robot grippers in Cartesian space. The basic principle behind its construction is mechatronics engineering and the multisensory concept. The space mouse has different modes of operation in which it can also be used as a two-dimensional mouse
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