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Ion Concentrations of Particulate Matter in Yongin in Spring and Fall (봄철과 가을철 용인지역 입자상 물질의 이온 농도)

  • Won, Soo-Ran;Choi, Yong-Joo;Kim, A-Rong;Choi, Soon-Ho;Ghim, Young-Sung
    • Journal of Korean Society for Atmospheric Environment
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    • v.26 no.3
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    • pp.265-275
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    • 2010
  • Mass and ion concentrations of $PM_{10}$ and $PM_{2.5}$ were measured in Yongin, downwind of the Seoul metropolitan area. Twenty-four hour average samples were collected daily for a month or so in spring and fall of both 2007 and 2008. Asian dust occurred twice in each period except in the fall of 2007. During the Asian dust period, nitrate in fine particles decreased since large amount of cations in coarse particles of Asian dust absorbed it. In spring 2008, sulfate as well as ammonium also increased in coarse particles. In spite of occasional Asian dust events, the influence of secondary formation was dominant over the period. Excessive ammonium over sulfate was enough to neutralize nitrate as well. High correlation coefficients between $K^+$ and sulfate, nitrate, and ammonium indicate a close relationship between secondary formation and biomass burning. Biomass burning and open burning are considered to be important sources of chloride.

THE LONGEVITY OF CIRCUMSTELLAR DISKS: THE η CHAMAELEONTIS CLUSTER

  • LYO A-RAN;LAWSON W. A.
    • Journal of The Korean Astronomical Society
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    • v.38 no.2
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    • pp.241-244
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    • 2005
  • We have analysed near-infrared JHKL observations of the members of the $\approx$9 Myr-old $\eta$ Chamaeleontis cluster. Using (J - H)/(K - L) and (H - K)/(K - L) IR colour-colour diagrams for the brightest 15 members of the cluster, we find the fraction of stellar systems with near-IR excess emission was 0.60 $\pm$ 0.13 (2$\sigma$). For the CTT and WTT star population, we also find a strong correlation between the IR excess and Ha emission which is also known as an accretion indicator. The (K - L) excess of these stars appears to indicate a wide range of star-disk activity; from a CTT star with high levels of accretion, to CTT - WTT transitional objects with evidence for some on-going accretion, and WTT stars with weak or absent IR excesses. Among the brightest 15 members, four stars (RECX 5, 9, 11 and ECHA J0843.3-7905) with IR excesses ${\Delta}$(K - L) > 0.4 mag and strong or variable optical emission were identified as likely experiencing on-going mass accretion from their circumstellar disks which we confirmed their accretion disks from the optical high-resolution echelle spectroscopic study. The result-ing accretion fraction of 0.27 $\pm$ 0.13 (2$\sigma$) suggests that the accretion phase, in addition to the disks themselves, can endure for at least ${\~}$10 Myr.

A Study on Utilization of ORCID based Author Identifier at National Level (국가 차원의 ORCID 기반 저자 식별자 활용에 관한 연구)

  • Kim, Eun-Jeong;Noh, Kyung-Ran
    • Journal of the Korean BIBLIA Society for library and Information Science
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    • v.28 no.3
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    • pp.151-174
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    • 2017
  • The diffusion of the internet, the advancement of ICT technology, and digital diffusion have facilitated the streamlining and acceleration of scholarly communication and speeding up research, and the paradigm of scholarly information dissemination is changing. This study introduces the ORCID, a unique author identifier, and examines the ORCID organization's activities, the advantages given to researchers and research institutes, and the membership status. In addition, this paper examines adoptions and utilizations of ORCID in major countries including USA, UK, Italy, and China. Based on this, this paper suggests the necessary considerations for utilizing ORCID in terms of governance, system elements, policy and institutional aspects in an effort to identify authors at national level.

Molecular Cloning, Identification and Characteristics of a Novel Isoform of Carbamyl Phosphate Synthetase I in Human Testis

  • Huo, Ran;Zhu, Hui;Lu, Li;Ying, Lanlan;Xu, Min;Xu, Zhiyang;Li, Jianmin;Zhou, Zuomin;Sha, Jiahao
    • BMB Reports
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    • v.38 no.1
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    • pp.28-33
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    • 2005
  • A gene coding a novel isoform of carbamyl phosphate synthetase I (CPS1) was cloned from a human testicular library. As shown by cDNA microarray hybridization, this gene was expressed at a higher level in human adult testes than in fetal testes. The full length of its cDNA was 3831 bp, with a 3149 bp open reading frame, encoding a 1050-amino-acid protein. The cDNA sequence was deposited in the GenBank (AY317138). Sequence analysis showed that it was homologous to the human CPS1 gene. The putative protein contained functional domains composing the intact large subunit of carbamoyl phosphate synthetase, thus indicated it has the capability of arginine biosynthesis. A multiple tissue expression profile showed high expression of this gene in human testis, suggesting the novel alternative splicing form of CPS1 may be correlated with human spermatogenesis.

Nail Art Design Applied Jean Dubuffet's Assemblage (Jean Dubuffet의 앗상블라주(Assemblage)를 응용한 네일아트 디자인)

  • Jang Ae-Ran
    • Journal of the Korean Society of Costume
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    • v.55 no.4 s.94
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    • pp.29-37
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    • 2005
  • Beauty Art is an act which makes a face beautiful using various methods such as permanent, manicure and make-up. Recently, Beauty Art is recognized as the personal culture expressing the value of beauty and spirit. Therefore, there are growing interests in the comprehensive study of Beauty Art nor only from the beauty industries but also from academia, because Beauty Art is the high value-added field and Is recognized as a style of the dress. The purpose of this study is to open a new view to understand the Nail Art as a fold of experimental plastic art. The arctic expression is added to Beauty Art to develop it from the routine technique of the make-up and hairstyling to creative art. Assemblage is adopted to provide Beauty Art with fine harmonious expression which develop Nail Art into interesting and unique art area. Assemblage meaning compounding or collection is a technique through which three-dimension is added to two-dimension paintings, and which is an expression of an art work by recollection of miscellaneous articles or waste materials. Assemblage is a term which Jean Dubuffet coioned first in order to differentiate collage used by Picaso or Braque. Here, I present Nail Art Designs which applied Jean Dubuffet's works focusing on Automaticity and Happenstantial phenomena of materials, Materialization, and Directness. These features are characteristics of Assemblage which basic frameworks are fantastic collection, accumulation, constructive collection, and object collection.

Changes in Block Exemption Applied to Maritime Transport and its Implication

  • Pak, Myong-Sop;Yoon, Yu-Ri;Hong, Ran-Ju
    • THE INTERNATIONAL COMMERCE & LAW REVIEW
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    • v.48
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    • pp.57-76
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    • 2010
  • This study reviews maritime transport policy regarding liner conference and the changes in the liner market over the decades. Liner shipping industry has long been protected from competition by block exemption. To prevent excessive competition in punctual operation and its inelastic market structure, liner shipping companies formed conferences that are protected to fix the prices under the law. In the US, deregulation in transport sector began from 80's and continuing with OSRA 1998, conferences were dissolving. On the other hand, the EU with close conference system, Regulation 4056/86 contained block exemption remained in force for unlimited time without review clause. However, in Oct 2008, the EU has announced its removal, and conferences were no longer permitted to fix the price nor exchange information. Although OSRA 1998 has already broken up conferences by allowing individual service contracts, but the repeal of the immunity for price fixing will alter significantly the rule on cooperation in the industry since it is a unilateral move by the EU, especially in transatlantic lane. There are rapid changes in shipping market getting much more complicated, and with removal of 4056/86 allowing the market to be more competitive, opening up the industry with far more diverse strategic options. Hence this paper reviews on liner shipping industry and its changes of policies over the years from protected market to open competition market of today.

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Endotracheal Colonization and Ventilator-associated Pneumonia in Mechanically Ventilated Patients according to Type of Endotracheal Suction System (기관 흡인술 유형에 따른 인공호흡기 적용 환자의 기관 내 균집락화와 폐렴 발생률)

  • Cha, Kyeong-Sook;Park, Ho-Ran
    • Journal of Korean Academy of Nursing
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    • v.41 no.2
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    • pp.175-181
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    • 2011
  • Purpose: This study was conducted to identify endotracheal colonization and the incidence of ventilator-associated pneumonia related to the type of endotracheal suction system. Methods: The participants in this study were ICU patients hospitalized between October 2009 to March 2010 who used ventilators for over 48 hr with closed (CSS, n=30) or open (OSS, n=32) suction systems. To standardize the pre-intervention suction system, a suctioning protocol was taught to the ICU nurses. Collected data were analyzed using ${\chi}^2$-test, Fisher's exact test, Wilcoxon rank sums test, Wilcoxon test, Log-rank test and Poisson regression. Results: Endotracheal colonization was higher in OSS than CSS from day 1 to day 8 while using a ventilator and there was a significant difference between the two groups. The CSS reached 50% of endotracheal colonization by the 4th day, whereas for the OSS, it was the 2nd day (p=.04). The incidence of ventilator-associated pneumonia showed no significant difference. Conclusion: For patients with a high risk of pneumonia, CSS must be used to lower endotracheal colonization.

An Optimization Algorithm for the Two-Echelon Capacitated Facility Location Problem (용량 제약이 있는 이계층 설비 입지선정 문제의 최적화 해법)

  • Kim Eun Jeong;Gang Dong Hwan;Lee Gyeong Sik;Park Seong Su
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 2003.05a
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    • pp.137-144
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    • 2003
  • We consider Two-echelon Single source Capacitated Facility Location Problem (TSCFLP). TSCFLP is a variant or Capacitated Facility Location Problem (CFLP). which has been an important issue in boa academic and industrial aspects. Given a set or possible facility locations in two echelons (warehouse / plant), a set or customers, TSCFLP is a decision problem to find a set or facility locations to open and to determine an allocation schedule that satisfies the demands or the customers and the capacity constraints or the facilities, while minimizing the overall cost. It ran be shown that TSCFLP Is strongly NP-hard For TSCFLf, few algorithms are known. which are heuristics. We propose a disaggregated version or the standard mixed integer programming formulation or TSCFLP We also provide a class or valid Inequalities Branch-and-price algorithm with rutting plane method Is used to find an optimal solution Efficient branching strategy compatible with subproblem optimization problems Is also provided. We report computational results or tests on 15 randomly generated instances.

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Elderly women's Health Care Experience at Doctorless Farm Willages (무의 농촌지역 여성노인의 건강관리 경험)

  • Kim, Young-Hee;Han, Young-Ran
    • Women's Health Nursing
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    • v.9 no.4
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    • pp.467-478
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    • 2003
  • Purpose: This study investigated elderly women's health care at doctorless farm villages based on information-about the perception and management of their health. Method: Grounded theory method as mapped out by Strauss and Corbin-was used to record and transcribe open-ended interviews. The data from these interviews were analyzed. Result: We found 18 categories and 28 sub-categories. In data analysis, the core phenomenon was named "movement in pain". Causal condition as essential prerequisites were aging symptoms, bad state of health, comfortable life to live alone, longevity, deficiency of health care resources, and sub-categories of the phenomena revealed acceptance of discomfort, enduring pain, continuity of movability. Elderly women's health-related activities included enduring as it is, movement consciously, applying resources, difficult in using health medical institutions. Family support, economic level, disease condition, support system of community were influenced to their health-related activities. Consequently, the results indicated that they wanted to accept given life, expected easy death. held out remaining life. Conclusion: This study revealed that the most important factor of elderly women's health care was "movement in pain". On the basis of this study, we needed to develop diverse nursing implementation plans for maintaining and improving' movability without pain'.

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Design and Fabrication of the Frequency Doubler for 24GHz Local Oscillator (24GHz 대역 국부발진기용 주파수 체배기 설계 및 제작)

  • Seo, Gon;Kim, Jang-Gu;Han, Sok-Kyun;Park, Chang-Hyun;Choi, Byung-Hai
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2003.10a
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    • pp.411-415
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    • 2003
  • In this paper, a reflector type frequency doubler for local oscillator at 24GHz is designed and fabricated with ne71300-N MESFET. Optimum source and load impedances are decided through a multiharmonic load pull simulation technique. A conversion gain ran be improved using the reflector and fundamental and third harmonics are well suppressed with open stub of λ/4 length. Measured results show output power at 0dBm of input power is -3.776dBm, conversion gain 0.736dB, harmonic suppression 41.064dBc, respectively.

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