6,653 research outputs found

    The Synesthesia effects of Online Advertising Stimulus Design on Word-of-Mouth and Purchase Intention: From the Perspective of Consumer Olfactory and Gustatory

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    Multisensory marketing has been seen as an approach improving advertising effect in the social science, neuroscience, and marketing literature. For examining visual/audio synesthesia, the effect of smelling and tasting an online product, this study first developed design elements of digital video advertising: rational/emotional appeals and fast/slow tempo. Moreover, it strives to investigate empirically the effects of various online advertisement contexts on consumer emotion, attitude, and behavioral intention. We used event-related potentials (ERPs) in a scenario-based laboratory experiments. Data collected from 166 customers provide strong support for the research model. Through EEG and SEM analyses, in rational advertisings, consumers’ olfactory was triggered and both arousal and pleasure of the emotions affected the attitudes; in emotional advertisings, not only olfactory but gustatory were triggered and only pleasure affected the attitudes. By understanding online advertising design and synesthesia, insights from the findings can benefit designers and marketers in implementing more effective marketing strategies

    Diversity Order Analysis for Quantized Constant Envelope Transmission

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    Quantized constant envelope (QCE) transmission is a popular and effective technique to reduce the hardware cost and improve the power efficiency of 5G and beyond systems equipped with large antenna arrays. It has been widely observed that the number of quantization levels has a substantial impact on the system performance. This paper aims to quantify the impact of the number of quantization levels on the system performance. Specifically, we consider a downlink single-user multiple-input-single-output (MISO) system with M-phase shift keying (PSK) constellation under the Rayleigh fading channel. We first derive a novel bound on the system symbol error probability (SEP). Based on the derived SEP bound, we characterize the achievable diversity order of the quantized matched filter (MF) precoding strategy. Our results show that full diversity order can be achieved when the number of quantization levels L is greater than the PSK constellation order M, i.e., L>M, only half diversity order is achievable when L=M, and the achievable diversity order is 0 when L<M. Simulation results verify our theoretical analysis.Comment: 9 pages, 3 figures, submitted for possible publicatio

    Hawking Evaporation of Einstein-Gauss-Bonnet AdS Black Holes in D4D\geqslant 4 dimensions

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    Einstein-Gauss-Bonnet theory is a string-generated gravity theory when approaching the low energy limit. By introducing the higher order curvature terms, this theory is supposed to help to solve the black hole singularity problem. In this work, we investigate the evaporation of the static spherically symmetric neutral AdS black holes in Einstein-Gauss-Bonnet gravity in various spacetime dimensions with both positive and negative couping constant α\alpha. By summarizing the asymptotic behavior of the evaporation process, we find the lifetime of the black holes is dimensional dependent. For α>0\alpha>0, in D6D\geqslant6 cases, the black holes will be completely evaporated in a finite time, which resembles the Schwarzschild-AdS case in Einstein gravity. While in D=4,5D=4,5 cases, the black hole lifetime is always infinite, which means the black hole becomes a remnant in the late time. Remarkably, the cases of α>0,D=4,5\alpha>0, D=4,5 will solve the terminal temperature divergent problem of the Schwarzschild-AdS case. For α<0\alpha<0, in all dimensions, the black hole will always spend a finite time to a minimal mass corresponding to the smallest horizon radius rmin=2αr_{min}=\sqrt{2|\alpha|} which coincide with an additional singularity. This phenomenon may violate cosmic censorship, and it implies that there may exist constraint conditions to the choice of coupling constant.Comment: 14 pages, 8 figures; v2: references added, minor corrections, submitted to journa

    Finding efficient frontier of process parameters for plastic injection molding

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    Product quality for plastic injection molding process is highly related with the settings for its process parameters. Additionally, the product quality is not simply based on a single quality index, but multiple interrelated quality indices. To find the settings for the process parameters such that the multiple quality indices can be simultaneously optimized is becoming a research issue and is now known as finding the efficient frontier of the process parameters. This study considers three quality indices in the plastic injection molding: war page, shrinkage, and volumetric shrinkage at ejection. A digital camera thin cover is taken as an investigation example to show the method of finding the efficient frontier. Solidworks and Moldflow are utilized to create the part's geometry and to simulate the injection molding process, respectively. Nine process parameters are considered in this research: injection time, injection pressure, packing time, packing pressure, cooling time, cooling temperature, mold open time, melt temperature, and mold temperature. Taguchi's orthogonal array L27 is applied to run the experiments, and analysis of variance is then used to find the significant process factors with the significant level 0.05. In the example case, four process factors are found significant. The four significant factors are further used to generate 34 experiments by complete experimental design. Each of the experiments is run in Moldflow. The collected experimental data with three quality indices and four process factors are further used to generate three multiple regression equations for the three quality indices, respectively. Then, the three multiple regression equations are applied to generate 1,225 theoretical datasets. Finally, data envelopment analysis is adopted to find the efficient frontier of the 1,225 theoretical datasets. The found datasets on the efficient frontier are with the optimal quality. The process parameters of the efficient frontier are further validated by Moldflow. This study demonstrates that the developed procedure has proved a useful optimization procedure that can be applied in practice to the injection molding process

    EFFECTS OF FUNCTIONAL KNEE BRACES ON NEUROMUSCULAR ADAPTATION IN ANTERIOR CRUCIATE LIGAMENT INJURED PATIENTS

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    INTRODUCTION: Neuromuscular adaptation in the lower extremity has been found in anterior cruciate ligament (ACL) injured patients, with mechanical and electromyographic alterations such as reduced knee extensor moment and power, increased hamsrings muscle activity, and decreased muscle strength (Berchuck, Andriacchi, Bach, & Reider, 1990; DeVita, Lassiter, Hortobagyi, & Torry, 1998). Functional knee bracing has been a common method to enhance functional knee stability in these patients for the past three decades. However, the long-term effects of knee bracing on ACL-reconstructed (ACL-R) patients have not been reported in the literature. There is thus an urgent need to identify the effects of bracing on the gait displayed by these patients

    In Vitro Assessment of Cytochrome P450 2C19 Potential of Naoxintong

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    The effects of Buchang Naoxintong Capsules (BNCs) on S-mephenytoin 4′-hydroxylation activities in human liver microsomes in vitro were assessed. Human liver microsome was prepared by different ultracentrifugation. Human liver microsome incubation experiment was carried out to assay BNC on S-mephenytoin 4′-hydroxylation activities. The 4′-hydroxylation of S-mephenytoin, a representative substrate toward CYP2C19, was increased by phenytoin sodium (positive control). After the incubation, the metabolites of the substrates (4′-OH-mephenytoin) were determined by HPLC. Results showed that both phenytoin sodium and BNC showed obvious increase effect on CYP2C19. The enzymatic reaction of BNC was observed with concentrations ranging from 5 μg/mL to 250 μg/mL. Compared to blank, the increase effect of BNC showed significant difference from the beginning of concentration of 150 μg/mL (P < 0.001). The conclusion was that BNC showed obvious increase effect on the catalytic activities of drug-metabolising CYP2C19 enzyme
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