• 대한산업공학회지
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• 제18권1호
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• pp.81-89
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• 1992

After much research on qualitative reasoning, the problem of ambiguities still hampers the practicality of this important AI tool. In this paper, the sources of ambiguities are examined in depth with a systems engineering point of view and possible directions to disambiguation are suggested. This includes some modeling strategies and an architecture of temporal inference for building unambiguous qualitative models of practical complexity. It is argued that knowledge of multiple levels in abstraction hierarchy must be reflected in the modeling to resolve ambiguities by introducing the designer's decisions. The inference engine must be able to integrate two different types of temporal knowledge representation to determine the partial ordering of future events. As an independent quantity management system that supports the suggested modeling approach, LIQUIDS(Linear Quantity-Information Deriving System) is described. The inference scheme can be conjoined with ordinary rule-based reasoning systems and hence generalized into many different domains.

• Parasites, Hosts and Diseases
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• 제53권5호
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• pp.575-581
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• 2015

Malaria is a tropical disease caused by protozoans of the Plasmodium genus. Delayed diagnosis and misdiagnosis are strongly associated with higher mortality. In recent years, a greater importance is attributed to Plasmodium knowlesi, a species found mainly in Southeast Asia. Routine parasitological diagnostics are associated with certain limitations and difficulties in unambiguous determination of the parasite species based only on microscopic image. Recently, molecular techniques have been increasingly used for predictive diagnosis. The aim of the study is to draw attention to the risk of travelling to knowlesi malaria endemic areas and to raise awareness among personnel involved in the therapeutic process.

• 한국어업기술학회:학술대회논문집
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• 한국어업기술학회 2001년도 춘계 수산관련학회 공동학술대회발표요지집
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• pp.471-472
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• 2001

Recently many studies show that genetic characters can be used to provide unambiguous taxonomic discrimination when morphological characters are not practical for routine identification to species level (Bucklin et al., 1996, 1998; Lindeque et al., 1999). The internal transcribed spacer (ITS) regions of the nuclear ribosomal DNA are also one of appropriate markers for species-level studies because it contains sufficient diversity to address intra- and interspecific phylogenetic relationships in invertebrates (Odorico and Miller,1997; Schizas et al., 1999). (omitted)

• 한국표면공학회지
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• 제32권3호
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• pp.281-288
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• 1999

Electrodeposited Zn-Ni alloy coatings are of particular interest for improving the corrosion resistance of steel in a number of enviornments. Of particular interest is the relationship between composition, structure and corrosion rate. This paper firstly reviews the literature regarding composition-structure relationships of Zn-Ni electrodeposits and compares them with the equilibrium phase diagram. Secondly, research was carried out on a wide range of coatings which were produced in the laboratory and their structure and corrosion rates determined. It was found that unambiguous identification of phases from XRD data can be difficult. Maximum corrosion resistance of deposits is obtained at 12-13% Ni, with a $\gamma$ phase structure and predomination of (600) and (411) reflections. Compatibility is important with regard to chromate conversion coatings.

• 대한약학회:학술대회논문집
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• 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2-2
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• pp.213.1-213.1
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• 2003

Sphingolipids and their metabolites are highly bioactive molecules that affect various cellular functions including differentiation, cellular senescence, apoptosis, and proliferation when added exogenously, or elevated intracellularly by turnover of complex sphingolipids or synthesis from de novo pathway. We are investigating the relationship of sphingolipids cycle in apoptosis early events. A new column liquid chromatography- tandem mass spectrometry (LC/MS/MS) in combination with multiple reaction monitoring (MRM) method was developed for the rapid, simultaneous and quantitative determination of unambiguous detecting sphingolipids in cells. (omitted)

• 정신신체의학
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• 제30권2호
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• pp.137-144
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• 2022

연구목적 본 연구는 정신건강의학과 환자의 수면의 질이 우울 증상에 미치는 영향과 모호함에 대한 해석 편향과 불안증상의 매개효과를 확인하고자 하였다. 방 법 한양대학교 구리병원 정신건강의학과의 외래 환자와 입원 환자를 대상으로 축적된 자료를 사용하였으며, 측정 도구로는 피츠버그 수면의 질 척도(Pittsburgh Sleep Quality Index), 모호한 상황에서의 시나리오 척도(Ambiguous/Unambiguous Situations Diary-Extended Version, AUSD-EX), 아동기 외상설문지(Childhood Trauma Questionnaire), 백 불안 척도(Beck Anxiety Inventory), 백 우울 척도(Beck Depression Inventory-II)가 사용되였다. 162명의 자료를 기초로 SPSS 25.0과 SPSS Macro를 사용하여 상관분석과 Bootstrapping 분석이 실시되었다. 결 과 연구 결과, 수면의 질과 우울 증상의 관계에서 모호함에 대한 해석 편향과 불안 증상의 이중 매개효과가 유의하게 나타났다. 결 론 본 연구는 낮은 수면의 질이 모호함에 대한 해석 편향을 거쳐 불안 및 우울 증상에 순차적으로 영향을 미친다는 점을 확인하였다. 이를 바탕으로 선행 증상에 대한 치료적 개입을 우선적으로 실시함으로써 다른 정신과적 증상 발달을 예방할 수 있을 것으로 기대된다.

• 정신신체의학
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• 제31권2호
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• pp.100-107
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• 2023

연구목적 본 연구는 정신건강의학과 환자의 절망감이 자살사고에 미치는 영향에서 수면의 질과 모호함에 대한 해석 편향의 매개효과를 확인하고자 하였다. 방 법 한양대학교 구리병원 정신건강의학과의 외래 환자와 입원 환자를 대상으로 축적된 자료를 사용하였으며, 측정 도구로는 벡 절망 척도(Beck Hopelessness Scale), 피츠버그 수면의 질 척도(Pittsburgh Sleep Quality Index), 모호한 상황에서의 시나리오 척도(Ambiguous/Unambiguous Situations Diary-Extended Version, AUSD-EX), Ultra-Short Suicidal Ideation Scale이 사용되었다. 231명의 자료를 기초로 SPSS 25.0과 SPSS Macro를 사용하여 상관분석과 Bootstrapping 기법을 이용한 회귀분석을 실시하였다. 결 과 연구 결과, 절망감과 자살사고의 관계에서 수면의 질과 모호함에 대한 해석 편향의 이중 매개효과가 유의하게 나타났다. 결 론 본 연구는 절망감이 낮은 수면의 질과 모호함에 대한 해석 편향을 거쳐 자살사고에 순차적으로 영향을 미친다는 점을 확인하였다. 이러한 결과는 정신건강의학과 환자에서 절망감이 자살사고로 이어지는 것을 예방함에 있어 낮은 수면의 질과 모호함에 대한 해석 편향을 개선하는 것이 필요함을 시사한다.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2007년도 춘계학술대회B
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• pp.2660-2665
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• 2007

Turbulent boundary-layer over a micro-riblet film(MRF) was investigated experimentally. The MRF has sharp V-shaped micro scale grooves of $300{\mu}m$ in width and $176.8{\mu}m$ in height. Particle image velocimetry(PIV) system was employed to measure velocity fields of flow over the MRF coated plate. Flow over a smooth plate was also measured for comparison. The PIV measurements were taken in the streamwise wall-normal planes at Re$\theta$= 985 and 2342. Vortex structures of the flow were analyzed by extracting the swirling strength as an unambiguous vortex-identification criterion. As a result the number of spanwise vortices with clockwise(negative) rotation decreases rapidly in the near-wall region(y<0.2h), but decreases slowly in the outer region(0.2h

• 한국연초학회지
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• 제27권1호
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• pp.100-106
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• 2005

To obtain the optimum condition for analysis of 10 alkaloids in tobacco leaves, such as nicotine, nornicotine, anatabine, anabasine, myosmine, cotinine, 2,3'-dipyridyl, $\beta-nicotyrine,\;\beta-nornicotyrine\;and\;\beta-formylnornicotin$, 5 types of extraction method were investigated by GC-FID and GC/MS. The optimum condition of alkaloid extraction was achieved by using methanol:dichloromethane(1:3, v/v) after NaOH treatment. The use of mass selective detector (MSD) provided unambiguous nicotine related alkaloid analysis. Alkaloids in various tobacco leaves were extracted with the optimum extraction condition and quantified by GC/MS/SIM mode. Compared with concentrations of alkaloids among the various tobacco leaves, the concentration of alkaloids was generally in the order burley > flue-cured > oriental tobacco. In flue-cured tobacco leaves, the order of concentration of alkaloids was nicotine > anatabine > nornicotine > $\beta-nicotyrine\;>\;\beta-formylnornicotine\; >\;myosmine\;>\;2,3'-dipyridyl\;>\;cotinine\;>\;anabasine\;>\;\beta-nornicotyrine$. However, in the case of burley and oriental tobacco leaves, the concentration of nornicotine was higher than that of anatabine.

• 한국통신학회논문지
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• 제38C권3호
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• pp.296-302
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• 2013

Binary offset carrier는 (BOC) 위성 통신 및 위성 항법 시스템 시스템에서 사용될 새로운 변조 방식으로 크게 주목 받고 있다. 본 논문에서는 sine 위상 BOC 신호를 위한 새로운 상관함수를 제안한다. 구체적으로는 BOC 신호 내의 하나의 부반송파 펄스를 다수의 구형 펄스의 합으로 해석하고, 그에 따른 다수의 부분상관함수들을 생성한다. 이후 생성한 부분상관함수들을 새롭게 결합함으로써 주변 첨두가 없는 새로운 상관함수를 생성한다. 모의실험을 통해 제안한 상관함수를 이용하는 경우, 기존의 상관함수들을 이용하는 경우들에 비해 더욱 향상된 코드 추적 성능을 가지는 것을 보인다.