3,677 research outputs found

    Mobile Advertising Technology Acceptance Model (M-TAM): An Extension of TAM in Mobile Marketing Context

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    Mobile advertising technology has revolutionized the way companies interact with their customers. This has offered both marketers and consumers the advantages of convenience, flexibility, and ubiquity etc. Irrespective of the advantages of mobile advertising technology, it is not easy for marketers and researchers to form adoptable mobile advertising technology for consumers without being in a position to precisely foresee consumers’ behavioural outcome. Additionally, this field appears to be scant in academic researches. The current study was initiated to empirically examine the influence of m-advertising technological factors (i.e., ease of use, usefulness, personalization and credibility) on consumers’ adoption behaviour. These factors were also mediated by emotional value in order to influence end users’ adoption behaviour. A quantitative approach based upon a cross-sectional administered survey was employed to collect the data from university going student as respondents. The Partial Least Square (PLS) two step path modelling was used through SmartPLS 3 to test the direct and indirect hypotheses. The results indicate that mobile advertising technology factors (i.e., ease of use, usefulness, personalization and credibility) directly and indirectly impact consumers’ adoption behaviour through emotional value. Based on the findings of the study, theoretical and practical contributions along with certain limitations and future researches recommendation are discussed consequentially

    Dvali-Gabadadze-Porrati Cosmology in Bianchi I brane

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    The dynamics of Dvali-Gabadadze-Porrati Cosmology (DGP) braneworld with an anisotropic brane is studied. The Friedmann equations and their solutions are obtained for two branches of anisotropic DGP model. The late time behavior in DGP cosmology is examined in the presence of anisotropy which shows that universe enters a self-accelerating phase much later compared to the isotropic case. The acceleration conditions and slow-roll conditions for inflation are obtained

    Study of the superconducting properties of the Bi-Ca-Sr-Cu-O system

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    High Temperature Superconductivity in the Bi-Ca-Sr-Cu-O System has been observed and has attracted considerable attention in 1988. The 80 K superconductivity phase has been identified to have a composition of Bi2CaSr2Cu2Ox, while the 110 K phase as reported in the literature has a possible composition of Bi2Ca2Sr2Cu3Ox. Researchers present here a study of the electrical properties of bulk samples of the slowly cooled and rapidly quenched 2:1:2:2 system. The samples used in this study were prepared from appropriate amounts of Bi2O3, CuO, SrCO3, CaCO3

    Kesejahteraan Nasabah Perbankan Syariah Di Daerah Istimewa YOGYAKARTA (Studi Preferensi Nilai Islam, Kalkulasi Sarana, Dan Tujuan)

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    Undang-Undang No. 10 Tahun 1998 tentang Perbankan menyatakan bank adalah badan USAha yang menghimpun dana dari masyarakat dalam bentuk simpanan dan menyalurkannya kepada masyarakat dalam bentuk kredit dan atau bentuk-bentuk lainnya dalam rangka meningkatkan taraf hidup rakyat banyak. Dalam perjalanannya, lembaga perbankan memiliki dua tipologi, yakni bank konvensional dan bank syariah. Bank syariah merupakan lembaga keuangan yang menawarkan pendekatan berbeda karena sifatnya nir-riba. Namun sayangnya, pertumbuhan bank syariah sampai dengan sekarang tidak lebih mencapai angka 5%, di tengah kondisi masyarakat Indonesia yang mayoritas beragama Islam. Penelitian ini berupa untuk melihat kondisi lembaga keuangan syariah yang tidak dapat berkembang secara optimal dalam perspektif kesejahteraan nasabah. Kesejahteraan didefinisikan sebagai sebuah kondisi yang tidak saja terpenuhi aspek ekonomi tetapi juga melihat perspektif sosial dan budayanya. Oleh karena itu, sebagai tolok ukur kesejahteraan, dalam penelitian ini melihat tentang kalkulasi sarana dan tujuan serta pertimbangan religi yang ditunjukkan dalam preferensi nilai

    Continuous user authentication featuring keystroke dynamics based on robust recurrent confidence model and ensemble learning approach

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    User authentication is considered to be an important aspect of any cybersecurity program. However, one-time validation of user’s identity is not strong to provide resilient security throughout the user session. In this aspect, continuous monitoring of session is necessary to ensure that only legitimate user is accessing the system resources for entire session. In this paper, a true continuous user authentication system featuring keystroke dynamics behavioural biometric modality has been proposed and implemented. A novel method of authenticating the user on each action has been presented which decides the legitimacy of current user based on the confidence in the genuineness of each action. The 2-phase methodology, consisting of ensemble learning and robust recurrent confidence model(R-RCM), has been designed which employs a novel perception of two thresholds i.e., alert and final threshold. Proposed methodology classifies each action based on the probability score of ensemble classifier which is afterwards used along with hyperparameters of R-RCM to compute the current confidence in the genuineness of user. System decides if user can continue using the system or not based on new confidence value and final threshold. However, it tends to lock out imposter user more quickly if it reaches the alert threshold. Moreover, system has been validated with two different experimental settings and results are reported in terms of mean average number of genuine actions (ANGA) and average number of imposter actions(ANIA), whereby achieving the lowest mean ANIA with experimental setting II

    Theoretical, Experimental, and Computational Evaluation of Several Vane-Type Slow-Wave Structures

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    Several types of periodic vane slow-wave structures were fabricated. The dispersion characteristics were found by theoretical analysis, experimental testing, and computer simulation using the MAFIA code. Computer-generated characteristics agreed to approximately within 2 percent of the experimental characteristics for all structures. The theoretical characteristics, however, deviated increasingly as the width to height ratio became smaller. Interaction impedances were also computed based on the experimental and computer-generated resonance frequency shifts due to the introduction of a perturbing dielectric rod

    Theoretical, Experimental, and Computational Evaluation of a Tunnel Ladder Slow-Wave Structure

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    The dispersion characteristics of a tunnel ladder circuit in a ridged wave guide were experimentally measured and determined by computer simulation using the electromagnetic code MAFIA. To qualitatively estimate interaction impedances, resonance frequency shifts due to a perturbing dielectric rod along the axis were also measured indicating the axial electric field strength. A theoretical modeling of the electric and magnetic fields in the tunnel area was also done

    Theoretical, Experimental, and Computational Evaluation of Disk-Loaded Circular Wave Guides

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    A disk-loaded circular wave guide structure and test fixture were fabricated. The dispersion characteristics were found by theoretical analysis, experimental testing, and computer simulation using the codes ARGUS and SOS. Interaction impedances were computed based on the corresponding dispersion characteristics. Finally, an equivalent circuit model for one period of the structure was chosen using equivalent circuit models for cylindrical wave guides of different radii. Optimum values for the discrete capacitors and inductors describing discontinuities between cylindrical wave guides were found using the computer code TOUCHSTONE

    Review of Slow-Wave Structures

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    The majority of recent theoretical and experimental reports published in the literature dealing with helical slow-wave structures focus on the dispersion characteristics and their effects due to the finite helix wire thickness and attenuation, dielectric loading, metal loading, and the introduction of plasma. In many papers, an effective dielectric constant is used to take into account helix wire dimensions and conductivity losses, while the propagation constant of the signal and the interaction impedance of the structure are found to depend on the surface resistivity of the helix. Also, various dielectric supporting rods are simulated by one or several uniform cylinders having an effective dielectric constant, while metal vane loading and plasma effects are incorporated in the effective dielectric constant. The papers dealing with coupled cavities and folded or loaded wave guides describe equivalent circuit models, efficiency enhancement, and the prediction of instabilities for these structures. Equivalent circuit models of various structures are found using computer software programs SUPERFISH and TOUCHSTONE. Efficiency enhancement in tubes is achieved through dynamic velocity and phase adjusted tapers using computer techniques. The stability threshold of unwanted antisymmetric and higher order modes is predicted using SOS and MAGIC codes and the dependence of higher order modes on beam conductance, section length, and effective Q of a cavity is shown

    Comparison of simple and chelated amberlite IR-120 for preconcentration and Determination of Cu(II) from aqueous samples

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    In the present study, the efficiency of simple and chelating Amberlite IR-120 with α-nitroso β-naphthol (IR-αNβN) and with 8-hydroxy quinoline (IR-8HQ) has been compared for the removal of Cu(II) from aqueous solutions. The chelation was confirmed using different characterization techniques like SEM, TGA and FTIR. A number of experiments were carried out in batch system to determine the effect of different parameters on adsorption of Cu(II) like pH, contact time and sample volume. The results showed occurrence of maximum adsorption at pH 7 in 10 min with adsorption capacity of 71.5 mg g-1 at 298 K. The adsorption followed pseudo second order kinetic model among the four kinetic models applied. Maximum desorption from IR-8HQ was obtained with a mixture of 4.0 M HCl and 0.5 M HNO3. Furthermore, IR-8HQ was found to be most selective adsorbent among three adsorbents investigated. The developed preconcentration procedure was successfully applied to spiked tap water and real samples. KEY WORDS: Chelating adsorbent, Amberlite IR-120, α-Nitroso β-naphthol, 8-Hydrox quinoline, Preconcentration Bull. Chem. Soc. Ethiop. 2016, 30(1), 39-54.DOI: http://dx.doi.org/10.4314/bcse.v30i1.
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