• 전기의세계
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• 제53권8호
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• pp.43-47
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• 2004

IDL (Interactive Data Languate)은 미국의 RSI 회사 (Research Systems inc.)에서, 데이터 처리 및 분석, 가시화를 주 목적으로 개발된 응용 소프트웨어이다. IDL은 특히 복잡한 수학적 분석을 위하여 배열 개념의 연산 처리 과정으로 설계되었으며, 시각적인 표현의 구현을 위하여 데이터의 가시화에 대한 많은 기능들을 제공한다. 따라서 종래의 프로그램 언어에서 수백 라인들로 이루어진 코드를, IDL에서는 단 몇 줄의 코드 구성으로 복잡한 데이터 처리 및 가시화가 가능하다. (중략)

• 전기학회논문지
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• 제56권6호
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• pp.1017-1022
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• 2007

In this paper, we try to analyze the likelihood of exercising the power of market dominance by certain generators in future power industry of Korea. Firstly, we estimated installed generation capacity and sales volume of electricity in Korea, based on 'The 3rd Long Term Power Plan' which was announced in December 2006. Secondly, we calculated HHI, an index showing the degree of concentration of an industry, and RSI, an index showing how adequate the supply of goods or services of an industry is, using Fast-Forward. Thirdly, assuming a major generator employs the strategy of withholding a part of its available capacity at a peak time, we simulated hypothetical movement of SMP over a certain period of time, which is compared with that obtained without assuming such strategy to generate Lerner Index. an index showing the degree of market power of a monopoly. Regulators, home and abroad, have not given much interest in analyzing the effect of market dominance that is likely to be exercised by certain players in the future. That said, this paper provides insight into developing methodologies of analyzing and mitigating such effect by proposing the above indices to gauge it. In addition, this paper also shows the potential impact of employing capacity withholding strategy on the financial account of a dominant generator.

• 한국물환경학회지
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• 제28권4호
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• pp.615-623
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• 2012

In this study, we evaluate the corrosion indexes (CI) such as Langelier Index (LI), Larson ratio (LR), Ryznar saturation index (RSI), Aggressiveness index (AI) of water quality for raw water, treated water and water in distribution reservoir at major eight drinking water treatment plants (DWTPs) in Korea. By analyzing secondary contamination of tap water, the variation of secondary contaminants was investigated with regard to pipe materials, aging and corrosion index (CI). In addition, we suggested an appropriate CI applicable water quality and the management plan for CI monitoriing. All CI showed corrosive water quality, and they did not change significantly in the distribution network. However, Copper (Cu), iron (Fe) and zinc (Zn) concentrations as secondary contaminants increased through the distribution network. Among CI, LI was most sensitive to changes in raw water quality and drinking water treatment. Also, it has high correlations with other indexes such as RSI, AI. Therefore, LI is considered as an appropriate CI to the domestic water quality. Based on these result, we propose LI as a drinking water quality standard to control the pipe corrosion from DWTPs.

• 분석과학
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• 제7권2호
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• pp.187-191
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• 1994

Pyridine과 $^tBuLi$의 반응생성물과 $Me_3SiCl$의 반응에 의해 반응성이 매우 큰 반응 중간체 1,2-dihydropyridine 유도체 (2)를 낮은 온도의 비극성 용매 속에서 합성하여 분리하였으며 SPINX3을 이용한 $^1H-NMR$ 미세 구조 분석에 의해 반응생성물 (2)의 구조를 확인하였다. $^1H-NMR$ spectrum에서 화학적 이동상수와 NH, 그리고 4개의 aromatic CH proton의 coupling에 관한 정보를 분석하였으며, 이 화합물의 형성반응에 의한 반응형성물 3과 4의 합성에 의해 확인하였다.

• 말소리와 음성과학
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• 제7권2호
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• pp.47-54
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• 2015

The objectives of this study are to research the frequency of depression symptom in patients with voice disorders and to investigate parameters associated with depression from voice evaluation. A hundred ninety six patients(106 males and 90 females) who had been diagnosed with voice disorders first in their lifetime were selected. All the patients were examined by laryngeal stroboscopy. For depression and voice study, personal interview, acoustic and aerodynamic analysis, voice handicap index(VHI), reflux symptom index(RSI), and beck depression index(BDI) were done respectively. Mild to severe BDI were seen in 26.2%(52 patients) of the whole patients. A BDI mean score of female patients was $8.8{\pm}7.5$ which was higher than that of male patients($5.6{\pm}6.6$), the difference observed being statistically significant(p<0.001). In the acoustic analysis, the score of sent_duration parameter was increasing in the patients with depression, which was significantly higher than the score of the patients without depression(p<0.05). In the addition, the scores of VHI and RSI were higher in the patients with depression(p<0.001). Our findings suggest that the prevalence of depression in patients with voice disorders is related to female, speaking velocity, and self-questionnaire. This result can be used for psychologically based approach to therapy.

• 대한화학회지
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• 제38권8호
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• pp.570-575
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• 1994

$\alpha$-Methylpyridine유도체1(a∼f)는 n-BuLi과의 반응에서 $\alpha$-methylenylpyridinium 염 3(a∼f)을 형성한다. 3(a∼f)와 $Me_3SiCl$ 및 $Me_2SiClCH(SiMe_3)CH_2tBu$반응에서 생성물 4(a∼f) 와 5(a∼f)을 형성한다. 화합물 4(a∼f)에 있는 규소원자와 결합된 methylene기의 수소원자는 화합물 4(a∼f)의 $CH_3$기 보다 n-BuLi과의 반응성이 큰 것으로 확인되었다.

• 대한지역사회영양학회지
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• 제17권6호
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• pp.724-736
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• 2012

This study was intended to investigate the sodium-related perception, dietary behavior, and practicability of methods for reducing sodium intake(RSI) according to the stage of change in consumers. The survey was conducted to 770 housewives, among them 553 subjects who answered the key questions for the stage of change were categorized into 'Maintenance (M)' stage (maintaining reduced salt intake for more than 6 months; n = 287, 51.90%), 'Action (A)' stage (maintaining reduced salt intake for less than 6 months; n=139, 25.14%), and 'Pre-Action (P)' stage (not starting reduced salt intake; n = 127, 22.97%). The subjects in M and A were significantly older than those in P (p < 0.01). The scores of desirable dietary habit and dietary balance were the highest in M followed by A and P. When eating out, the subjects in P considered 'price' more and 'healthiness of food' less than those in M and A did. Among the guidelines for RSI, 'Avoid Processed Foods', 'Eat enough vegetables and fruits' and 'Add little amount of dipping sauce for fried food' were selected as the three easiest items to perform. With regard to the sodium-related perception, the subjects in M considered eating-out food to be more salty than homemade dishes, read nutrition labels more, avoided table salt or dipping sauce for fried food more, and had 'own low-sodium recipe' than those in P (p < 0.001). It is suggested that practicability of actions for RSI and the stage of change should be considered to develop effective personalized education program and nutrition guidance.

• Journal of Oral Medicine and Pain
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• 제36권3호
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• pp.177-185
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• 2011

이 연구의 목적은 측두하악관절에서 통증의 존재에 따른 T1,T2 강조 영상에서 원판후조직의 상대적 신호 강도의 연관성을 평가하는 것이다. 본 연구는 양측성 관절원판전위가 있으면서 편측성으로 관절통증을 가진 61명의 환자의 122개의 관절을 근거하여 행해졌다. 자기공명영상의 평가는 원판후조직의 신호강도의 측정과 관절원판의 위치, 삼출액, 퇴행성 변화와 같은 관절상태를 포함하였다. 원판후조직의 상대적 신호강도는 대뇌의 회질의 신호강도를 기준으로 구해졌다. 원판후조직의 상대적 신호강도와 관절통증, 개구량, 관절원판위치, 삼출액, 퇴행성 변화간의 상관성이 조사되었다. 그 결과, T1 강조 영상에서 상대적 신호강도가 비통증관절에 비해 통증관절에서 유의성있게 높게 나타났다. 또한 관절원판 전위의심도와 통증 간에 유의성 있는 상관성이 있는 것으로 나타났다. 이러한 결과는 관절원판전위 환자에서 발생하는 악관절 통증이 원판후조직의 손상과 밀접한 관련성이 있음을 시사하는 것으로서 따라서 악관절의 T1 강조영상에서 관찰되는 원판후조직의 상대적 신호강도의 크기는 악관절 통증의 존재를 나타내는 진단학적 표시자로 사용될 수 있을 것으로 생각된다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2015년도 제46회 하계학술대회
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• pp.318-320
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• 2015

The distribution system is operated radially in which electrical grid is complex. If a fault occurs in distribution system, it can make a huge impact on power supply. Therefore, The distribution contingency analysis is proposed in this paper based on the reference [1]. Using RSI (Restoration Section Index) calculated by feeder margin and section load, the operator can grasp restoration capability quickly.

• 한국콘텐츠학회논문지
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• 제14권12호
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• pp.808-817
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• 2014

목적: 본 연구는 노인요양병원 요양보호사의 피부감염 인식과 감염관리 수행 정도를 파악하기 위한 서술적 조사연구이다. 방법: 본 연구는 G시와 J도에 소재한 7개 노인요양병원에서 근무하고 있는 요양보호사 209명을 대상으로 실시하였다. 수집된 자료는 SPSS 18.0 program을 이용하여 ${\chi}^2$-test, t-test와 ANOVA로 통계 분석하였다. 결과: 노인요양병원 근무 시 새로 생긴 피부감염은 76.6%가 '예'라고 응답하였으며, 피부감염의 진단은 접촉 피부염 42.5%, 옴 26.9% 그리고 습진 25.0% 였다. 피부감염 인식은 평균 3.81점이었고 감염관리 수행 정도는 412점 이었다. 대상자의 일반적 특성에 따른 감염관리 수행에서는 병상수(F=4.63, p=.011)와 하루 동안 돌보는 환자 수(F=2.67, p=.049)에서 통계적으로 유의한 차이가 나타났다. 결론: 본 연구결과는 요양보호사를 위한 보수교육 및 의료감염관리 표준지침 개발을 위한 기초자료로 활용할 수 있을 것이다.