21 research outputs found

    Factors Influencing the Technological Pedagogical Content Knowledge (TPACK) of English Teachers in Primary Schools, Chiang Mai Primary Educational Service Area 1

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    The purposes of this study were to measure the Technological Pedagogical Content Knowledge (TPACK) and to investigate the factors influencing the TPACK of English teachers in primary schools, Chiang Mai Primary Educational Service Area 1. A sample of 81 English teachers in primary schools of Chiang Mai Primary Educational Service Area 1 were selected through two-stage cluster sampling. The research instruments were a likert 5 point scale questionnaire and a semi-structured interview. Data collected by questionnaires were analyzed by frequency, percentage, mean, standard deviation, Pearson Product Moment Correlation Coefficient, and Multiple Regression Analysis. Data from the interview were analyzed through Content Analysis. The results showed that 1) the TPACK of English teachers in primary schools of Chiang Mai Primary Educational Service Area 1 was at a high level (M=3.62 SD=0.55) and 2) the factors influencing the TPACK of English teachers in primary schools, Chiang Mai Primary Educational Service Area 1 at 0.05 level of significant were frequency of technology use in classroom (β = -0.414) and technology literacy (β = 0-.280

    Extreme Value Estimators for Stock Indices in ASEAN Economics Community

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    The paper examines the extremeValue-at-Risk(VaR) model with daily stock indices of selected South EastAsian countries consisting of SET index (Thailand), KLSEindex (Malaysia), FTSI index (Singapore), and JKSE index(Indonesia). Additionally, the experiment based on extremevalue theory (EVT) was conducted to generate extremeVaRestimates at the 99 percent confidence intervals. The paperis tested utilizing Generalized Extreme Value Distribution(GEV) was computed by using negative maximum naturallog of weekly returns with block maxima method on AECmarketindices. And Generalized Pareto Distribution (GPD)estimated by using natural log exceeding value of dailyreturns of stock indices which set threshold limit flooringvalue as specified and computed with threshold method.According to calculated weekly returns of GEV andcalculated natural log of daily returns of GPD on AECmarket indices. The output results indicated that KLSEextremeVaR in Malaysia was the AEC attractive equitymarket when investors invest in these markets

    Characterizing the design and economics components of jewellery into designomics model of indigenous community: a case study of Hmong Mae-Sa, Chiang Mai, Thailand / Jaruwan Pengsiri ... [et al.]

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    This study aimed at (1) exploring the characteristics of Hmong silver jewllery and its production process and (2) proposing a new formula of design concerning design and economics components. The eight silver jewellery experts from the Hmong indigenous group were purposively selected as the participants. The in-depth interview was conducted to collect data about the entrepreneurship, the designomics and design process, and the knowledge management of the Hmong indigenous group. The results showed that (1) the main characteristics of Hmong’s silver jewellery represented the natural environment, geometric shapes, implementation of modern patterns to original patterns and the production process consisted of five steps, and (2) a new formula concerning design and economics components consisted of three main components: Aesthetic component concerning the structure, pattern, and materials; Economic component concerning uniqueness, target customers, raw materials, setting a sale price, and sales distribution; and social responded component concerning community consideration, environmental consideration, and wisdom transfer to the next generation. The findings of this study advance our understanding on the interrelationship among wisdom, designs, and economics of Hmong’s silver jewellery. They can be used as a guideline in silver jewellery production process contributing to jewellery business, especially that of the Hmong indigenous group

    A DIALLEL ANALYSIS OF LODGING RESISTANCE AND ASSOCIATED CHARACTERS IN SORGHUM VULGARE, PERS

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    Microanalysis of Melt Pockets within Martian Meteorite DaG 476

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    ExtremeVaR of South East Asian Stock Indices with Extreme Distribution- based Efficiency

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    AbstractThe paper examines extremeValue-at-Risk (extremeVaR) model using median with daily stock indices of selected South East Asian countries consisting of SET index (Thailand), KLSE index (Malaysia), FTSI index (Singapore), and JKSE index (Indonesia). Additionally, the experiment using extreme value theory (EVT) was tested by Generalized Pareto Distribution (GPD) which has the characteristics of cumulative distribution function (CDF), or just distribution function, describes the probability that a subjective-valued random. The output results indicated that using median of KLSE extremeVaR in Malaysia was the AEC efficient equity for investing in these markets

    Micro-scale Deformation of Gypsum During Micro-Indentation Loading

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    The role of plastic deformation and fracture during small-scale, low-rate contact scenarios in gypsum is investigated. Results indicate that the hardness decreases with increasing load, on all axes, ranging from 216 kg/mm2 at 0.25 N to 91 kg/mm2 at 4.91 N on the (010) plane and from 122 kg/mm2 at 0.98 N to 75 kg/mm2 at 4.91 N on the (011) and (110) cleavage planes. Higher hardness values for lower loads are attributed to dislocation saturation and localized necking, which leads to densification and work-hardening. Transmitted light microscopy reveals that the decrease in hardness for increasing load is related to an increase in subsurface cracking along the (010) and (011) cleavage planes, enabling the indenter to penetrate deeper into the crystal. Coupled with an increase in subsurface cracking is an increase in surface smoothness as a result of increased plastic material flow beneath the indenter, with crack densities decreasing from 34% at a 0.25 N load to 6% at a 4.91 N loading. Raman spectroscopy reveals that the higher-hardness material comprises water-reduced forms of calcium sulphate: hemihydrate and α-CaSO4. Local temperatures required for the dehydration of gypsum range from 118 to 142 °C, indicating such temperatures were reached during plastic flow, and related heat generation, of the material beneath the indenter under relatively quasi-static conditions. Evaporated water generates voids in the original crystal structure and enables the sulphate to deform more easily

    Dynamic Fragmentation of Granite for Impact Energies of 6–28 J

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    The dynamic fragmentation of granite at impact energies of 6–28 J is examined in this paper. Results indicate that more dense materials, or those with a higher quartz content, produce less fractured mass, and have larger dominant fragment sizes and smaller aspect ratios in their fragment probability distributions. Values of the peaks in fragment size distributions are in agreement with theoretical predictions. Examination of the fracture surfaces reveals information concerning transgranular cracking, crack bifurcation mechanisms and evidence of comminution of sub-micron K-feldspar and plagioclase fragments. Fractal dimensions of the cumulative distribution of fragment sizes were ≃2, indicating that comminution was a dominant fragmentation mechanism in these tests. Peaks in the probability distributions of sub-micron fragments on fracture surfaces reveal a limit of coherent fragments of approximately 0.60 μm for plagioclase and K-feldspar. The smallest fragments found on the surfaces were approximately 0.30 μm and this is considered to be the comminution limit for these materials
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