• Title/Summary/Keyword: CHILE

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PHYSICAL PROPERTIES OF THE GIANT H II REGION G353.2+0.9 IN NGC 6357

  • BOHIGAS JOAQUIN;TAPIA MAURICIO;ROTH MIGUEL;RUlZ MARIA TERESA
    • Journal of The Korean Astronomical Society
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    • v.37 no.4
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    • pp.281-284
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    • 2004
  • Optical imaging and spectroscopy of G353.2+0.9, the brightest part of the giant H II region NGC 6357, shows that this H II region is optically thin, contains ${\~}300\;M_{\bigodot}$ of ionized gas and is probably expanding into the surrounding medium. Its chemical composition is similar to that found in other H II regions at similar galactocentric distances if temperature fluctuations are significant. The inner regions are probably made of thin shells and filaments, whereas extended slabs of material, maybe shells seen edge-on, are found in the periphery. The radio continuum and H$\alpha$ emission maps are very similar, indicating that most of the optical nebula is not embedded in the denser regions traced by molecular gas and the presence of IR sources. About $10^{50}$ UV photons per second are required to produce the H$\beta$ flux from the 1l.3'${\times}$10' region surrounding the Pis 24 cluster that is south of G353.2+0.9. Most of the energy powering this region is produced by the 03-7 stars in Pis 24. Most of the 2MASS sources in the field with large infrared excesses are within G353.2+0.9, indicating that the most recent star forming process occured within it. The formation of Pis 24 preceded and caused the formation of this new generation of stars and may be responsible for the present-day morphology of the entire NGC 6357 region.

OPTICAL SURVEY WITH KMTNET FOR DUSTY STAR-FORMING GALAXIES IN THE AKARI DEEP FIELD SOUTH

  • JEONG, WOONG-SEOB;KO, KYEONGYEON;KIM, MINJIN;KO, JONGWAN;KIM, SAM;PYO, JEONGHYUN;KIM, SEONG JIN;KIM, TAEHYUN;SEO, HYUN JONG;PARK, WON-KEE;PARK, SUNG-JOON;KIM, MIN GYU;KIM, DONG JIN;CHA, SANG-MOK;LEE, YONGSEOK;LEE, CHUNG-UK;KIM, SEUNG-LEE;MATSUURA, SHUJI;PEARSON, CHRIS;MATSUHARA, HIDEO
    • Journal of The Korean Astronomical Society
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    • v.49 no.5
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    • pp.225-232
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    • 2016
  • We present an optical imaging survey of AKARI Deep Field South (ADF-S) using the Korea Microlensing Telescope Network (KMTNet), to find optical counterparts of dusty star-forming galaxies. The ADF-S is a deep far-infrared imaging survey region with AKARI covering around 12 deg2, where the deep optical imaging data are not yet available. By utilizing the wide-field capability of the KMTNet telescopes (~4 deg2), we obtain optical images in B, R and I bands for three regions. The target depth of images in B, R and I bands is ~24 mag (AB) at 5σ, which enables us to detect most dusty star-forming galaxies discovered by AKARI in the ADF-S. Those optical datasets will be helpful to constrain optical spectral energy distributions as well as to identify rare types of dusty star-forming galaxies such as dust-obscured galaxy, sub-millimeter galaxy at high redshift.

Renal failure associated with ingestion of grapes and raisins in dogs (개에서 포도 및 건포도 섭취가 신부전에 미치는 영향)

  • Yuk, Jin-yub;Kim, Cheol-ho;Kim, Tae-yung;Kang, Chung-boo
    • Korean Journal of Veterinary Research
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    • v.45 no.2
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    • pp.287-296
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    • 2005
  • This experiments was designed to observe the effect of period and dose of ingestion of grapes on renal failure in dog. After the dogs had been mixed of general feed, raisins from U.S.A and fresh grapes from Chile selling in Korea. We observed the clinical sign, and analyzed the blood and urine using by biochemical test. The experiment was executed by the two following groups. The experiment group 1. derived renal failure by supplying the mixed general feed with fresh grapes and dry grapes 15 g per weight kg, 2 times a day (AM 09, PM 21), the experiment group 2. executed to derive renal failure by supplying the mixed general feed with fresh grapes and dry grapes 40 g per weight kg, 2 times a day. Extraction of blood for analysis was conducted one time a day and clinical test for renal failure was executed by means of a blood analysis, biochemical analysis, urine analysis, excretory urography (E.U) and E.R.D-$screen^{TM}$ urine test (Heska, USA). The results of group 1 were normal ranges (BUN 9.0~22.6 mg/dl, creatinine 0.8~1.2 mg/dl, Ca 9.7~12.3 mg/dl, Pi 2.9~4.6 mg/dl), renal failure was not observed. On the 3rd day in group 2, azotemia was arisen from the increasing BUN 83 mg/dl (7~25 mg/dl), creatinine 2.3 mg/dl (0.5~1.4 mg/dl), when executed urine was tested by E.R.D-$screen^{TM}$ test using in the early kidney disease diagnosis, microalbumine state was high positive, and it showed stale delay by using excretory urography (EU). This study demonstrated that acute renal failure by grapes and raisins dependent on food dose, and specific characters of individual.

Analysis on the Trade Adjustment Assistance Program and the Case Study (무역조정지원(貿易調整支援) 사례(事例)에 관한 연구(硏究))

  • Lee, Ki-Hwan
    • THE INTERNATIONAL COMMERCE & LAW REVIEW
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    • v.37
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    • pp.277-327
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    • 2008
  • This paper is to provide for an analysis on the trade adjustment assistance program and the Case study affected by international trade and FTA. The paper offers a legal study on analysis about Korea's Trade Adjustment Assistance Law for the Manufacturing Industries, USA's TAA. and Japan's law for Industry revival. In general, USA's TAA measures are defined as assistance actions for business enterprises, farmers and manufacturing industries workers. We exclude farmers and fishermen under Korea's Trade Adjustment Assistance Law for the Manufacturing Industries's business enterprises and workers, but we give them the systemic supports under korea's special assistance law for the farmers and fishermen and so on after FTA. Especially this focuses on the trade adjustment assistance case about both Korea's agriculture-farmer assistance from FTA and USA's TAA from workers in layoffs of trade-impacted communities. Korea has provided TAA to the sphere of agriculture after special legislation in Korea-Chile helping closed orchard, modernizing high quality producing facility for agriculture competition, producing superior fruit saplings, and constructing the distribution center in the producing district. But for US-Korea FTA and rapid increase of import by FTA expansion, we must prepare such indemnity systems for loss as cash benefit and wider aids for closed farm. The USA's TAA program targets manufacturing workers affected by international trade, who may have fewer transferable skills and face greater challenges to reemployment than other dislocated workers. A large majority sought some assistance from their one-stop center. Relatively small numbers chose to enroll in training, but those who did it often used this opportunity to chart a new career path. Finally, we learned the importance of education and discipline from USA cases. The fast and accurate information providing can raise efficiencies. The infrastructure can maximize the effect of TAA. The effective application would help us get over difficulties of TAA at hand.

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A Study on Settlement of Investment Disputes under ICSID Mechanism (ICSID의 투자분쟁 해결구조에 관한 고찰)

  • 김상호
    • Journal of Arbitration Studies
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    • v.13 no.2
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    • pp.123-156
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    • 2004
  • Settlement of investment disputes is quite different from that of commercial disputes arising from ordinary commercial transactions in view of disputing parties, applicable laws and rules, etc.. Therefore, it is very important to consider the Convention on the Settlement of Investment Disputes between States and Nationals of Other States(Washington Convention) of 1965. The creation of the International Centre for Settlement of Investment Disputes(ICSID), which was established under the Washington Convention, was the belief that an institution specially designed to facilitate the settlement of investment disputes between governments and foreign investors could help to promote increased flows of international investment. Pursuant to the Washington Convention, ICSID provides facilities for the conciliation and arbitration of disputes between member countries and investors who qualify as nationals of other member countries. Recourse to ICSID conciliation and arbitration is entirely voluntary. However, once the parties have consented to arbitration under the Washington Convention, neither can unilaterally withdraw its consent. Moreover, all Contracting States of the Washington Convention are required by the Convention to recognize and enforce ICSID arbitral awards. Provisions on ICSID arbitration are commonly found in investment contracts between governments of member countries and investors from other member countries. Advance consents by governments to submit investment disputes to ICSID arbitration can also be found in many bilateral investment treaties including the Korea-China Agreement on the Encouragement and Reciprocal Protection of Investments(1992), the Korea-Japan Agreement for the Liberalization, Promotion and Protection of Investment(2003) and the Korea-Chile FTA, the latter was signed as of February 15, 2003 and is still pending in the National Assembly for its ratification. Arbitration under the auspices of ICSID is similarly one of the main mechanism for the settlement of investment disputes under the bilateral treaties on investment. Therefore, it is a problem of vital importance that Korean parties interested in investment to foreign countries should understand and cope with the settlement mechanism of investment disputes under the Washington Convention and bilateral investment treaties.

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Relationship of South China Sea summer monsoon with ENSO (남중국해 여름몬순과 ENSO와의 가능한 상관관계)

  • Choi, Jae-Won;Park, Ki-Jun;Kim, Jeoung-Yun;Kim, Baek-Jo
    • Journal of Environmental Science International
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    • v.24 no.6
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    • pp.827-840
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    • 2015
  • This study analyzed a correlation between South China Sea summer (June to September) monsoon (SCSSM) and the ENSO for the last 32 years (1979 to 2010). There was a correlation that the higher (lower) the SST in the $Ni{\tilde{n}}o-3.4$ region was, the weaker (stronger) the SCSSM intensity was. To identify the reason for this correlation, a difference of means between 8 El $Ni{\tilde{n}}o$ years and 8 La $Ni{\tilde{n}}a$ years (June to September). The analysis on the difference between two groups with respect to the 850 hPa stream flows showed that there were anomalous huge cyclones in the subtropical Pacific in the both hemispheres so that cold and dry anomalous northerlies were strengthened in the South China Sea relatively while anomalous westerlies were strengthened from the Maritime Continent to the off the coast of Chile. The analysis on the difference between two groups with respect to the 200 hPa stream flows showed that the opposite anomalous pressure system pattern to that in the 850 hPa stream flows were shown. In the subtropical Pacific of the both hemispheres, anomalous anticyclones existed so that anomalous easterlies were strengthened from the Maritime Continent to the equatorial central Pacific. Considering the anomalous atmospheric circulations in the upper and lower layers of the troposphere, upward airflows from the equatorial central and eastern Pacific were downward in the South China Sea and the Maritime Continent, which was a structure of anomalous atmospheric circulations. This means that the Walker Circulation was weakened and it was a typical structure of atmospheric circulations revealed in El $Ni{\tilde{n}}o$ years.

Thermal Deformation Analysis of L-shaped Composite During Cure Process by Viscoelastic Model (점탄성을 고려한 L-형상 복합재료 성형시 열변형 해석)

  • Seong, Dong-Yun;Kim, Wie-Dae
    • Composites Research
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    • v.33 no.4
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    • pp.220-227
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    • 2020
  • When curing the composite, the fibers have little thermal deformation, but the resin changes its properties with time and temperature, which leads to residual stress in the product. Residual stress is caused by the difference in the coefficient of thermal expansion of the fibers and resin during the curing process and the chemical shrinkage of the resin. This difference causes thermal deformation such as spring-in and warpage. Thermal deformation of composite structure is important issue on quality of product, and it should be considered in manufacturing process. In this study, a subroutine was developed to predict thermal deformation by applying 3-D viscoelastic model. The finite element analysis was verified by comparing the results of the plate analysis of the 2-D viscoelastic model. Spring-in of L-shaped structure was predicted and analyzed by applying the 3-D viscoelastic model.

Numerical simulation of fish nets in currents using a Morison force model

  • Cifuentes, Cristian;Kim, M.H.
    • Ocean Systems Engineering
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    • v.7 no.2
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    • pp.143-155
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    • 2017
  • For complex flexible structures such as nets, the determination of drag forces and its deformation is a challenging task. The accurate prediction of loads on cages is one of the key steps in designing fish farm facilities. The basic physics with a simple cage, can be addressed by the use of experimental studies. However, to design more complex cage system for various environmental conditions, a reliable numerical simulation tool is essential. In this work, the current load on a cage is calculated using a Morison-force model applied at instantaneous positions of equivalent-net modeling. Variations of solidity ratio ($S_n$) of the net and current speed are considered. An equivalent array of cylinders is built to represent the physical netting. Based on the systematic comparisons between the published experimental data for Raschel nets and the current numerical simulations, carried out using the commercial software OrcaFlex, a new formulation for $C_d$ values, used in the equivalent-net model, is presented. The similar approach can also be applied to other netting materials following the same procedure. In case of high solidity ratio and current speed, the hybrid model defines $C_d$ as a function of Re (Reynolds number) and $S_n$ to better represent the corresponding weak diffraction effects. Otherwise, the conventional $C_d$ values depending only on Re can be used with including shielding effects for downstream elements. This new methodology significantly improves the agreement between numerical and experimental data.

A Study on the Determination of Certificate of Origin in Agriculture Sector - Focused on FTA Agreements - (우리나라 농산물 원산지 결정기준에 관한 연구 - 기 체결 FTA 협정을 중심으로 -)

  • Park, Hyun-Hee;Cho, Sung-Je
    • International Commerce and Information Review
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    • v.14 no.2
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    • pp.447-470
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    • 2012
  • A Certificate of Origin is used in international trade. It is a printed form, completed by the exporter or its agent and certified by an issuing body, attesting that the goods in a particular export shipment have been wholly produced, manufactured or processed in a particular country. FTA rules of origin in recent FTA agreement is a very complex procedure that requires international negotiations in the field has become the largest issues. Case of Korea-Chile FTA, starting with the origin criteria for each agreements is inconsistent due to differences between countries is an area that is not easy to negotiate. This study is covered in the agreement signed on the origin criteria for adequate review and comparison by item currently being pursued through the FTA was signed during the implications that can be applied to the agricultural sector has to offer.

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THE BIMA PROJECT: O-C DIAGRAMS OF ECLIPSING BINARY SYSTEMS

  • HAANS, G.K.;RAMADHAN, D.G.;AKHYAR, S.;AZALIAH, R.;SUHERLI, J.;IRAWATI, P.;SAROTSAKULCHAI, T.;ARIFIN, Z.M.;RICHICHI, A.;MALASAN, H.L.;SOONTHORNTHUM, B.
    • Publications of The Korean Astronomical Society
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    • v.30 no.2
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    • pp.205-209
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    • 2015
  • The Eclipsing Binaries Minima (BIMA) Monitoring Project is a CCD-based photometric observational program initiated by Bosscha Observatory - Lembang, Indonesia in June 2012. Since December 2012 the National Astronomical Research Institute of Thailand (NARIT) has joined the BIMA Project as the main partner. This project aims to build an open-database of eclipsing binary minima and to establish the orbital period of each system and its variations. The project is conducted on the basis of multisite monitoring observations of eclipsing binaries with magnitudes less than 19 mag. Differential photometry methods have been applied throughout the observations. Data reduction was performed using IRAF. The observations were carried out in BVRI bands using three different small telescopes situated in Indonesia, Thailand, and Chile. Computer programs have been developed for calculating the time of minima. To date, more than 140 eclipsing binaries have been observed. From them 71 minima have been determined. We present and discuss the O-C diagrams for some eclipsing binary systems.