• 원자력산업
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• 1112호통권10호
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• pp.52-55
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• 1982

$\lceil$원자방사선의 영향에 관한 UN과학위원회$\rfloor$ (UNSCEAR)는 최근 1982년 보고서를 정리했다. UN과학위원회의 보고서는 환경중의 방사성물질수준, 방사선의 신체적${\cdot}$유전적 영향 및 방사선의 위험도에 관한 가장 포괄적인 보고서로 평가받고 있다. 이번 보고서는 77년이 보고서이후 5년만에 나온 것으로서 최신 데이터를 수록하고 있다.

• 한국컴퓨터정보학회논문지
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• 제22권10호
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• pp.19-26
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• 2017

In this paper, we propose an efficient image equipment implementation for the detector characteristics of various detectors by analyzing un-cooled thermal detector that exhibits nonlinear changes due to external temperature effects. First, we explain Thermal Electric Cooler for un-cooled detector temperature control system and Non-image correction methode for IR system. Second, we present the results of a study on an efficient control technique that can minimize the deterioration of image quality by controlling a un-cooled thermal detector without a thermal electric cooler(TEC) inside. Third, we suggest Image Correction Methods for Uncooled IR TECless Detector with Non-linear characteristics due to Temperature Change. So, we analyze and present the results of Image correction methods for various un-cooled thermal detector.

• Journal of Contemporary Eastern Asia
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• 제15권2호
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• pp.191-210
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• 2016

While general belief is that the military alliances are stable and rigid, the authors argue that the states are far more flexible in their behavior and often act against their alliances. This paper looks at states' behavior in the UN GA and looks how it is reflected in participation in military alliances during three periods of history since 1976 to this day. The authors illustrate the need to consider the network representation of co-sponsoring groups in General Assembly votes. They find significant support for their argument, indicating that social aspects can be extended beyond alliances. An application of social network analysis shows some unexpected affiliations in UN GA. If the UN GA is the "true" nature of these countries' alliance strategies, then it might suggest some significant defections and interesting association.

• 한국주거학회논문집
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• 제13권4호
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• pp.19-26
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• 2002

Despite its relatively small size, at least compared to other architectural programs, the house figures large in the cultural imagination. Closely identified with the individual and nuclear family, it has been frequently considered as an expression of widely held, even universal, values. Conversely, the private house has also been emblematic of more subjective desires, that change not only from person to person but from generation to generation. Certain conclusions can be drawn about the status of the private house at the end of the century, both as cultural invention and as a product of the autonomous discipline of architecture. The contemporary loftlike living space is similarly associated with work, given its emergence as an alternative home for individuals wanting space in which to live and work. In the case of what might be called the "un-private house", it is ofen a digital presence and the change of family system. This study was conducted to define the un-private house through public/private. The architectural characteristics of un-private house are as follows; 1) Alternatives- large open space with multiple function and collective free plan 2) Dematerialization- steel and glass with visual openness and ambiguity 3) Digital & Interfaces- fold and screen using technology and program. Especially, the un-private house is designed to provide individuals with emotional, superficial, and synergistic space, focusing on the personal life-style.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2006년도 춘계학술발표회 논문집(I)
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• pp.442-445
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• 2006

This paper presents an analytical prediction of nonlinear characteristics and behavior characteristics PSC structures with un-bonded tendon system. In this paper, a numerical model for un-bonded tendon is proposed based on the finite element method, which can represent straight or curved un-bonded tendon behavior. this model and time-dependent material model used to investigate the time-dependent behavior of un-bonded prestressed concrete structures. The accuracy and objectivity of the assessment process may be enhanced by the use of sophisticated nonlinear finite element analysis program. A computer program, named RCAHEST(Reinforced Concrete Analysis in Higher Evaluation System Technology), for the analysis of concrete structures and steel plate was used. The material nonlinearities are taken into account by comprising the tension, compression, and shear models of cracked concrete and models for reinforcements and tendons in the concrete. The smeared crack approach is incorporated. It accounts for the aging, creep and shrinkage of concrete and the stress relaxation of prestressed steel. The proposed un-bonded tendon model and numerical method of un-bonded prestressed concrete structures is verified by comparison with reliable experimental results.

• 한국화재소방학회논문지
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• 제21권3호
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• pp.84-90
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• 2007

UN에서는 위험물의 분류, 표지, 제조, 수송, 저장, 사용과 폐기에 관한 통합된 시스템(GHS, Globally Harmonized System of Classification and Labelling of Chemicals, 화학물질의 분류와 표지에 관한 세계조화시스템)을 구축하고 이 사항을 OECD에 가입한 모든 나라들에게 자국에 도입하여 실시하도록 권고하고 있다. GHS는 위험물분류와 운송부분에 관하여 물리 화학적 위험성과 급성독성의 분류와 표지사항을 기본으로 출발하였으므로 기존의 UN 시행방법과 큰 차이는 없다. 본 연구에서는 UN에서 권고하고 있는 GHS와 위험물안전관리법의 위험물분류와 위험물표지사항 및 위험물판정시험방법을 비교 검토하였다.

• Archives of Pharmacal Research
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• 제13권3호
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• pp.233-239
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• 1990

The efect of acute renal failure (ARF) on the pharmacokinetics o sulfobromophthalein (BSP) was investigated in order to elucidate if renal failure modifies the hepatic metabolism of drugs. ARF was induced by intravenous (iv) injection of uranyl nitrate (UN) to rats (5 mg/kg) five days before the experiment. Area under the plasma concentration-time curve (AUC)of BSP after portal vein (pv) injection increased by 2-fold and total body clearance ($CL_1$) decreased one half (p <0.01) in UN-induced ARF (UN-ARF) rate compared to the control rats. But the plasma disappearance of BSP after iv injection did not differ significantly between control and UN-ARF rats. Since BSP is excreted via the liver, $CL_1$ represented the approximate hepatic clearance of BSP. Therefore, the decrease in $CL_1$ represented the approximate hepatic clearance of BSP. Therefore, the decrease in $CL_1$ represents a decrease in hepatic intrinsic clearance ($CL_{int}$) for BSP since plasma free fraction ($f_p$) of BSP was not affected by UN-ARF. The content of hepatic cytoplasmic Y-protein, which catalyzes BSP-glutathione conjugation and limits the trasfer of BSP from blood to bile, increased significantly (p < 0.01), however its binding activity (BA) for BSP was decreased significantly (p <0.01) by UN-ARF. The decrease in $CL_{int}$might have some correlation with the changed characteristics of hepatic Y-protein, specifically its decreased BA for BSP.

• Nuclear Engineering and Technology
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• 제54권2호
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• pp.653-660
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• 2022

The interaction between UN and CdCl₂ in the LiCl-KCl molten eutectic was studied at 1023 K. The chlorination was monitored by sampling and recording the redox potential of the medium. At 1023 K the chlorination of UN with cadmium chloride in the molten LiCl-KCl eutectic proceeds completely and results in the formation of uranium chlorides. The melts of the LiCl-KCl-UCl₃ or LiCl-KCl-UCl₄ compositions can be obtained by the end of experiment depending on the presence of metallic cadmium in the reaction zone. The higher the concentration of the chlorinating agent, the faster the reaction rate. At [CdCl₂]/[UN] = 1.65 (10% excess) the reaction proceeds to completion in about 7.5 h. At [CdCl₂]/[UN] = 7 the complete chlorination takes 2.5-3 h.

• 말소리와 음성과학
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• 제14권3호
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• pp.67-76
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• 2022

This paper presents two experiments examining different gemination behavior of English affixes. Experiment 1 focused on geminates through affixation with im-, un-, -ness, and -ly. The English group articulated geminates with longer absolute and relative durations than singletons for im-, un-, and -ness, but there was no difference for -ly. This suggests that -ly words are more likely to be perceived as whole words, and that -ly is less decomposable. Furthermore, un- geminates exhibited longer absolute and preceding vowel durations than im- geminates, suggesting that im- is more decomposable than un-. However, the Korean group produced geminates with longer absolute and relative durations than singletons for all im-, un-, -ness, and -ly, and produced comparable absolute durations of im- and un- geminates. Experiment 2 investigated different gemination behaviors of locative and negative im- prefixes. The English group showed durational contrast between geminates and singletons only for negative im-, indicating that locative im- is not easily separated from stem. However, the Korean group produced longer absolute and relative durations for geminates than for singletons for both locative and negative im-. According to the findings of Experiments 1 and 2, affix decomposability is less likely to influence Korean speakers' English affix gemination, and spellings may have a greater influence.

• 융합보안논문지
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• 제14권6_1호
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• pp.75-87
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• 2014

집권 3년차의 김정은 시대 북한의 지속과 변화 분석은 나름대로 의미를 부여할 수 있을 것이다. 분석한 결과 보다 합리적이고 통계적인 방법을 적용하기 위하여 김일성, 김정일, 김정은 시대의 신년사를 활용하였다. 북한에 있어서 신년사만큼 영향력 있는 사항은 드물며 북한사회의 제 분야에 있어서 한해의 길라잡이 역할을 수행하고 있다. 현재까지 발표된 김일성, 김정일, 김정은 시대 신년사를 종합적으로 고찰하여 정리하였다. 종합된 신년사를 김일성, 김정일, 김정은 시대로 구분하여 발표방법, 내용구성, 기타사항을 등을 비교 분석하였으며, 이어서 북한 정권별 신년사 특징과 함의를 살펴보았다. 이와 같은 분석 결과를 바탕으로 김정은 시대의 지속과 변화를 전망해 보았다. 먼저 지속적인 사항으로 제시한 사항은 사회주의 체제 고수와 선군정치의 통치방식이다. 변화사항으로는 (1) 경제난 타개를 위한 부분적인 개방문제, (2) 북한의 핵문제, (3) 자본주의 성격의 유입과 사회주의 통제력 약화, (4) 김정은의 해외 유학경험 등을 4가지 사항을 변화요인으로 제시하였다. 이러한 김정은 시대의 북한 사회의 변화와 지속요인은 복합적으로 작동될 것이다. 김정은 시대의 북한의 지속과 변화문제는 남북문제를 해결해 나가는데 핵심 사항들이다. 전 국민적 공감대를 형성하면서 국론결집 노력 강화와 변화 상황에 능동적으로 대처할 수 있는 대북정책의 유연성을 확보하는 자세가 필요한 시점이다.