10,368 research outputs found

    International products and purchase intention in Jordan among consumer ethnocentrism

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    This study attempts to validate the Antecedents of Consumer Ethnocentrism and determine causal relationships between the specified antecedents and customer ethnocentrism in light of customer behavior in a less developed country Jordan. Seven antecedents were identified: culture openness, conservatism, collectivism, patriotism, control belief, interest in foreign travel and attitude toward foreign product. Each variable is measured by a 7-point Likert-scale of various developed past scales. Consumer ethnocentrism was measured using the CETSCALE 17 items. An 84 percent response rate was collected from 120 questionnaires distributed. Confirmatory factor analysis performed on the data reveals that the measurement model and structural model are statistically fit. Structural equation modeling (SEM) analysis establishes causal relationships between cultural openness, control belief, foreign travel, attitude and ethnocentrism

    Working memory learning method and astrocytes number in different subfields of rat's Hippocampus

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    The aim of this study was evaluation of the astrocytes number in different subfields of rat's Hippocampus after spatial learning with usage of Morris Water Maze technique and working memory method. In this study, between 2005-2006 years in Pasteur institute of Iran-Tehran and histological department of Gorgan University with usage of Morris Water Maze and working memory technique, we used 14 male albino wistar rats. Seventh rats were in control group and 7 rats in working memory group. After histological preparation, the slides were stained with PTAH staining for showing the Astrocytes. Present results showed significant difference in astrocytes number in CA1, CA2 and CA3 areas of hippocampus between control and reference memory group. The number of astrocytes is increased in working memory group. Then we divided the hippocampus to three parts: Anterior, middle and posterior and with compare of different area (CA1, CA2 and CA3) of hippocampus, we found that the differences between Anterior-middle and Middle-Posterior of CA1 and CA2 area of hippocampus were significant, whereas the difference between Anterior-Posterior parts was not significant in CA1 and CA2 areas. In CA3 area, the difference between Anterior-Middle and Anterior-Posterior parts was significant, whereas the difference between middle and posterior parts was not significant. We concluded that the number of astrocytes increased due to spatial learning and working memory technique. © 2008 Science Publications

    Perkembangan Teknologi Di Bidang Produksi Pangan Dan Obat-obatan Serta Hak-hak Konsumen

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    Nowadays, the regulation on food and drugs is considered to be clear and sufficient. However, the duty to examine, supervise and to avoid the dangers which are possible to happen, is not yet been undertaken. In addition to this, thre is no relevant body establisehed for such puposes. Therefore, the wise step to avoid any negative impacts of food and drugs is by incepting a regulation to supervise importing, consuming and the sirculation of such products

    Meningkatkan Hasil Belajar Matematika Siswa Melalui Model Pembelajaran Berbasis Masalah Dengan Penilaian Portofolio Di SMPN 10 Kota Gorontalo

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    The aims of this research is to increase students achievement of class VIIB SMPN 10 Gorontalo City at sosial aritmetic material through problem-based instruction model with assessment of student potofolio. Procedure of this research uses classroom action research, that is: planning, action, observation, and reflection at two cycles. The results of this research show that there is improvement of students learning outcomes base on criterion of minimal completeness, students activity and ability of teacher manage study base on observation result from the first cycle to the second cycles. Based on this findings can be concluded that problem-based instruction model with assessment of student potofolio can improve the product and process learning at sosial aritmetic material

    On the existence of chaotic circumferential waves in spinning disks

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    We use a third-order perturbation theory and Melnikov's method to prove the existence of chaos in spinning circular disks subject to a lateral point load. We show that the emergence of transverse homoclinic and heteroclinic points respectively lead to a random reversal in the traveling direction of circumferential waves and a random phase shift of magnitude π\pi for both forward and backward wave components. These long-term phenomena occur in imperfect low-speed disks sufficiently far from fundamental resonances.Comment: 8 pages, 5 figures, to appear in CHAOS (Volume 17, Issue 2, June 2007

    Constraining Form Factors with the Method of Unitarity Bounds

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    The availability of a reliable bound on an integral involving the square of the modulus of a form factor on the unitarity cut allows one to constrain the form factor at points inside the analyticity domain and its shape parameters, and also to isolate domains on the real axis and in the complex energy plane where zeros are excluded. In this lecture note, we review the mathematical techniques of this formalism in its standard form, known as the method of unitarity bounds, and recent developments which allow us to include information on the phase and modulus along a part of the unitarity cut. We also provide a brief summary of some results that we have obtained in the recent past, which demonstrate the usefulness of the method for precision predictions on the form factors.Comment: 12 pages, 2 figures; Lecture given at the DAE-BRNS Workshop on Hadron Physics, Bhabha Atomic Research Centre, Mumbai, India, October 31-November 4, 2011, submitted to Proceeding

    Evaluation of PPG Biometrics for Authentication in different states

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    Amongst all medical biometric traits, Photoplethysmograph (PPG) is the easiest to acquire. PPG records the blood volume change with just combination of Light Emitting Diode and Photodiode from any part of the body. With IoT and smart homes' penetration, PPG recording can easily be integrated with other vital wearable devices. PPG represents peculiarity of hemodynamics and cardiovascular system for each individual. This paper presents non-fiducial method for PPG based biometric authentication. Being a physiological signal, PPG signal alters with physical/mental stress and time. For robustness, these variations cannot be ignored. While, most of the previous works focused only on single session, this paper demonstrates extensive performance evaluation of PPG biometrics against single session data, different emotions, physical exercise and time-lapse using Continuous Wavelet Transform (CWT) and Direct Linear Discriminant Analysis (DLDA). When evaluated on different states and datasets, equal error rate (EER) of 0.5%0.5\%-6%6\% was achieved for 4545-6060s average training time. Our CWT/DLDA based technique outperformed all other dimensionality reduction techniques and previous work.Comment: Accepted at 11th IAPR/IEEE International Conference on Biometrics, 2018. 6 pages, 6 figure

    Task-Projected Hyperdimensional Computing for Multi-Task Learning

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    Brain-inspired Hyperdimensional (HD) computing is an emerging technique for cognitive tasks in the field of low-power design. As a fast-learning and energy-efficient computational paradigm, HD computing has shown great success in many real-world applications. However, an HD model incrementally trained on multiple tasks suffers from the negative impacts of catastrophic forgetting. The model forgets the knowledge learned from previous tasks and only focuses on the current one. To the best of our knowledge, no study has been conducted to investigate the feasibility of applying multi-task learning to HD computing. In this paper, we propose Task-Projected Hyperdimensional Computing (TP-HDC) to make the HD model simultaneously support multiple tasks by exploiting the redundant dimensionality in the hyperspace. To mitigate the interferences between different tasks, we project each task into a separate subspace for learning. Compared with the baseline method, our approach efficiently utilizes the unused capacity in the hyperspace and shows a 12.8% improvement in averaged accuracy with negligible memory overhead.Comment: To be published in 16th International Conference on Artificial Intelligence Applications and Innovation

    Structure and function relationship of human heart from DENSE MRI

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    The study here, suggests a macroscopic structure for the Left Ventricle (LV), based on the heart kinematics which is obtained through imaging. The measurement of the heart muscle deformation using the Displacement ENcoding with Stimulated Echoes (DENSE) MRI, which describes the heart kinematics in the Lagrangian frame work, is used to determine the high resolution patterns of true myocardial strain. Subsequently, the tangential Shortening Index (SI) and the thickening of the LV wall are calculated for each data point. Considering the heart as a positive-displacement pump, the contribution of each segment of LV in the heart function, can be determined by the SI and thickening of the wall in the same portion. Hence the SI isosurfaces show the extent and spatial distribution of the heart activity and reveals its macro structure. The structure and function of the heart are, therefore, related which in turn results in a macroscopic model for the LV. In particular, it was observed that the heart functionality is not uniformly distributed in the LV, and the regions with greater effect on the pumping process, form a band which wraps around the heart. These results, which are supported by the established histological evidence, may be considered as a landmark in connecting the structure and function of the heart through imaging. Furthermore, the compatibility of this model with microscopic observations about the fiber direction is investigated [1]. This method may be used for planning as well as post evaluation of the ventriculoplasty
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