Samples were collected from planktonic habitats of the fresh and brackish waters in Korea from August 2016 to May 2018. As a result, three genera and nine species were newly recorded in Korea. The unrecorded indigenous genera were Anathece, Chondrocystis and Geminocystis, and nine species were Anabaenopsis arnoldii, Anathece smithii, Chondrocystis dermochroa, Coelosphaerium aerugineum, Eucapsis microscopica, Geminocystis herdmanii, Microcystis panniformis, Synechococcus nidulans and Woronichinia karelica. Anathece smithii, Coelosphaerium aerugineum, Eucapsis microscopica, Microcystis panniformis and Synechococcus nidulans had been reported to inhabit freshwater, but these were found in brackish water in this study. Microcystis panniformis, which is a potential genus for causing green-tide, is taxonomically valuable in Korea.

Overseas R&D subsidiaries contribute to the cross -border knowledge sourcing of MNC headquarter by providing tacit and context specific knowledge and reducing the searching cost of the headquarter

Abstract1)Recent scandals of milk additives in several developing countries provoked controversy about quality issue of dairy products, grapping academic attention to the dairy supply chain. In this paper, we first focus on moral hazard problem of self-interested entities about the quality across the dairy supply chain, due to unobservable and unverifiable quality management efforts of all entities – including dairy producers, stations, and a final producer – and high inspection cost for the quality. Based on the identified moral hazard problem, we understand why the adoption of IoT-based tracking systems about quality produced from each entity is a must, different from RFID-based tracking systems.

Ochratoxin A, which is frequently detected in cereals and infant diets worldwidely, is a mycotoxin to damage mainly the kidney and liver. Because ochratoxin A is highly thermostable compound. it is necessary to study ways of reducing level of ochratoxin A by controling processing steps. However, food processes, including extrusion, expansion, roasting, and steam cooking, which are used in order to mitigate the contents of ochratoxin A, are known to produce polycyclic aromatic hydrocarbons, which are generated from radicals decomposed by pyrolysis. Therefore, this study analyzed the levels of 4 polycyclic aromatic hydrocarbons, benz (a) anthracene, chrysene, benzo (b) fluoranthene and benzo (a) pyrene in rice-based products made in high pressure and heating process. Rice samples were finely ground, and homogenized samples were alkaline treatement with 1 M KOH/EtOH and extracted with liquid-liquid extraction method using n-hexane. The extracted solution was pretreated with a silica cartridge. The purified solution was dried with nitrogen gas and dissolved in 1 mL of dichloromethane and injected into GC/MSD. We had overall recoveries for 4 polycyclic aromatic hydrocarbons spiked into rice samples ranging from 92.8 to 110.2%. The limit of quantitations of benz (a) anthracene, chrysene, benzo (b) fluoranthene and benzo (a) pyrene in rice-based product were 0.19 ng/g, 0.38 ng/g, 0.51 ng/g, and 0.31 ng/g, respectively. However, these 4 polycyclic aromatic hydrocarbons in all processed rice samples were not detected.

Roots of the March First Movement as Non-violent, Ordinary People’s Search for Justice The March First Movement of 1919 in Korea, widely accepted as a new type of movement based on the nonviolence and engagement of ordinary people, has attracted many scholars to study its historical character. Yet, there are few studies on the roots of the Movement spirit. This paper introduces a unique approach, offered by Moon-Young Lee. Lee traced the roots of the Movement in four moments in a Korean history: first, ideals of ancient Koreans; Pungryu-do in Silla dynasty; Donghak and Christian movement at the end of Joseon dynasty. Lee examined the character of the agent, goal to be achieved and the means to achieve the goal in each of four moments. Comparing the four, Lee found out that there are continuity and evolution in the four moments, which explain the extraordinary feat by ordinary people in the non-violent peaceful demand of independence.

We present analyses of 1250 variable sources identied in a 20 square degree eld toward NGC 2784 by the KMTNet Supernova Program. We categorize the variable sources into three groups based on their B-band variability. The rst group consists of 31 high variability sources with their B- band RMS variability greater than 0.3 magnitudes. The second group of medium variability contains 265 sources with RMS variability between 0.05 and 0.3 magnitudes. The remaining 951 sources belong to the third group of low variability with an RMS variability smaller than 0.05 magnitudes. Of the entire 1250 sources, 4 clearly show periods of variability greater than 100 days, while the rest have periods shorter than 51 days or no reliable periods. The majority of the sources show either rather irregular variability or short periods faster than 2 days. Most of the sources with reliable period determination between 2 and 51 days belong to the low-variability group, although a few belong to the medium-variability group. All the variable sources with periods longer than 35 days appear to be very red with B􀀀V > 1.5 and V 􀀀I > 2.1 magnitudes. We classify candidates of 51 Cepheids, 17 semi-regular variables, 3 Mira types, 2 RV(B) Tauri stars, 26 eclipsing binary systems and 1 active galactic nucleus. The majority of long-term variables in our sample belong to either Mira or semi-regular types, indicating that long-term variability may be more prominent in post-main sequence phases of late-type stars. The depth of the eclipsing dips of the 26 candidates for eclipsing binaries is equivalent to 0.61 as the average relative size of the two stars in the binary system. Our results illustrate the power of the KMTNet Supernova Program for future studies of variable objects.

A large-scale neutral hydrogen (H i) ring serendipitously found in the Leo I galaxy group is 200 kpc in diameter with MHi ~ 1:67 X 109M⊙, unique in size in the Local Universe. It is still under debate where this Hi ring originated - whether it has formed out of the gas remaining after the formation of a galaxy group (primordial origin) or been stripped during galaxy-galaxy interactions (tidal origin). We are investigating the optical and Hi gas properties of the dwarf galaxies located within the gas ring in order to probe its formation mechanism. In this work, we present the photometric properties of the dwarfs inside the ring using the CFHT MegaCam u*, g', r' and i'-band data. We discuss the origin of the gas ring based on the stellar age and metal abundance of dwarf galaxies contained within it.

We present population synthesis models for the calcium II triplet (CaT), currently the most popular metallicity indicator, based on high-resolution empirical spectral energy distributions (SEDs). Our new CaT models, based on empirical SEDs, show a linear correlation below [Fe/H] ~ -0.5, but the linear relation breaks down in the metal-rich regime by converging to the same equivalent width. This relation shows good agreement with the observed CaT of globular clusters (GCs) in NGC 1407 and the Milky Way. However, a model based on theoretical SEDs does not show this feature of the CaT and fails to reproduce observed GCs in the metal-rich regime. This linear relation may cause inaccurate metallicity determination for metal-rich stellar populations. We have also conrmed that the effect of horizontal- branch stars on the CaT is almost negligible in models based on both empirical and theoretical SEDs. Our new empirical model may explain the difference between the color distributions and CaT distributions of GCs in various early-type galaxies. Based on our model, we claim that the CaT is not a good metallicity indicator for simple stellar populations in the metal-rich regime.

Popular 3D printers as a new industrial revolution attract public attention. 3D printing will radically convergence many of the business models that companies take for granted today. And recently they were trying to convergence with the game industry. In this respect, this study is designed to figure out the current situations of board game and to suggest its convergence service model. To achieve this, this paper is to analyse board game cases of domestic and foreign relate to 3D printing. Finally, we suggest new service model to make on-off line contents of board game industry using 3D printing.

차 (Tea)는 네팔을 포함한 남아시아의 주요 농산물 수출품목 중에 하나이다. 네팔의 차 생산은 150년 전에 시작되었지만, 상업적인 생산 규모는 발전 가능성이 있음에도 불구하고초창기 모습 그대로이다. 차 생산에서 우위를 차지하고 있는인도, 스리랑카, 방글라데시와 같이 네팔은 좋은 품질의 차를생산할 수 있는 큰 잠재력을 가지고 있다. 그리고 현재 차 산업의 선도자로 남아시아 국가의 잠재력을 강화하기 위해 남아시아지역협력연합 (South Asian Association for the RegionalCooperation, SAARC)은 각 회원국의 National Tea board가차 산업을 육성할 수 있도록 지원하기 위하여 차 위원회를 설립할 예정이다. 이러한 남아시아지역협력연합의 차 위원회 설립에 맞추어 본 연구는 남아시아 차 산업에서 부각되고 있는네팔의 차 생산과 소비, 그리고 수출 경향을 다른 남아시아국가와 비교하여 분석하였다. 남아시아는 전세계 차 생산량의약 1/3를 생산하고 있으며, 대표적인 차 생산국가는 인도, 스리랑카, 방글라데시, 네팔이다. 남아시아 중에서 네팔은 연간약 1만8천톤의 차를 생산하고 있으며, 최근 20여년간(1994~2012) 차 생산량이 약 100배(196톤→18,309톤) 가까이 급증하고 있다. 네팔의 차 산업은 수출증대를 통해 외화획득과 경제발전에 기여할 뿐만 아니라 차 생산과 가공산업에참여하는 농가와 농촌여성의 고용창출 측면에서 매우 중요한역할을 담당하고 있다.