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- 저자 : Lkhamsuren, Bolor‐ (검색결과 4 건)
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Lkhamsuren Tegshjargal,박철호 중앙대학교 한국전자무역연구소 2019 전자무역연구 Vol.17 No.3
Purpose: The purpose of this study is to analyze the dividend disclosure effect of the Mongolian securities market using data of companies listed on the Mongolian securities market from 2012 to 2017. To this end, among the companies listed in the Mongolian securities market, companies with cash dividends are selected according to a certain standard, and the stock returns before and after the dividend disclosure are compared and analyzed with the market returns. If there is a disclosure effect of dividend information, it will be able to verify whether there is a semi-strong form efficiency in the market, as well as whether it can support the signaling hypothesis that can theoretically explain this analysis. Composition/Logic: The effect of information transfer on dividend disclosures is analyzed using the methodology of the event study. For certain securities, an abnormal return is measured before and after a particular event is published on the stock market to assess whether this is due to new events or information. Event studies usually use the market model. We obtain the absolute return (AR) or cumulative abnormal return (CAR) from the difference between the realized return and the expected return predicted by the market model, and then statistically verify that there is an abnormal return or cumulative abnormal return before and after the publication of a particular event. Findings: The CAARs of both cash dividend increase and decrease samples categorized by dividend per share were statistically significantly positive. Thus, the hypothesis that positive abnormal returns would be seen in the sample with increasing cash dividends, and negative abnormal returns would be shown in the sample with decreasing cash dividends was not supported. On the other hand, the hypothesis that the abnormal return of a small firm sample will be greater than the abnormal return of a large firm sample during the disclosure period was supported. Therefore, the information transfer effect of dividend disclosure in the Mongolian securities market exists, and it can be concluded that the securities market is not efficient in the semi-strong form sense. Originality/Value: This study is meaningful in that it examines the disclosure effect of cash dividends in the Mongolian securities market, which is not well known in Korea. The company's cash dividend will be meaningful as information that allows investors with relatively asymmetric information to judge the company's fundamentals. Therefore, this study provides implications for dividend policy to managers who carry out their dividend policy, and at the same time, it can contribute to investment strategy establishment and decision making for investors in Mongolian stock market.
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Arsen Babajanyan,Lkhamsuren Enkhtur,Balt-Erdene Khishigbadrakh,Harutyun Melikyan,Youngwoon Yoon,Songhui Kim,이한주,김태동,이기진,Barry Friedman 한국물리학회 2011 Current Applied Physics Vol.11 No.2
To study the anisotropic electric transport properties of Copper-(II)-Phthalocyanine (CuPc) thin films we measured the conductivity of a CuPc organic field-effect transistor using a near-field scanning microwave microscope by measuring the microwave reflection coefficient S11. The orientation of grains depended on the heat-treatment condition and the temperature of the substrate during film deposition. The fieldeffect mobility of the CuPc thin film annealed at 300 ℃ was increased about 5 times compared to the film formed at room temperature and 17 times larger than that prepared by deposition at 300 ℃.
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Determinants of <i>Caragana microphylla</i> density distribution in the Mongolian steppe
Narantsetseg, Amartuvshin,Kang, Sinkyu,Lkhamsuren, Bolor‐,Erdene,Ko, Dongwook W. Springer Japan 2014 Ecological research Vol.29 No.5
<P><B>Abstract</B></P><P>Regional differences in <I>Caragana microphylla</I> density in the Mongolian steppes were explained by considering multiple abiotic and biotic factors collectively, including aridity gradients, grazing regimes, fire disturbance, and interspecific interactions. In the central and eastern Mongolian steppes, we collected vegetation data from 127 sites. Along 250‐m line transects, the hit frequencies of <I>C. microphylla</I> and tall‐grass species were recorded. Ancillary data included weather information, livestock populations, fire occurrence maps, and herder camp locations. Based on the steppe types and disturbance regimes, the sites were classified into 12 sub‐groups. The data were statistically analyzed at the site, county, and sub‐group levels. The natural <I>C. microphylla</I> density decreased with climatic aridity from forb‐steppes to semi‐desert steppes, but this pattern was not observed at grazed and burned sites. Livestock grazing decreased <I>C. microphylla</I> density, but this effect was considerably confounded by aridity effects, especially in the central steppes, making the relationship between <I>C. microphylla</I> and livestock densities complex. Although fire appeared to be an important factor in the eastern steppes, the mechanism of its effect on <I>C. microphylla</I> density was unclear, because the fire–shrub interaction is influenced by the tall‐grass recovery process after fire. Based on our results, we propose that two different confounding effects, namely aridity versus grazing and fire versus interspecific interactions, play important roles in determining the spatial distribution of <I>C. microphylla</I> density in the central and eastern Mongolian steppes, respectively.</P>
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