• 대한지구과학교육학회지
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• 제3권3호
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• pp.163-174
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• 2010

The purpose of this study is to device the teaching-learning method and the evaluating method on 'free inquiry' which is newly introduced in 2007 revised curriculum. The teaching-learning models which apply 'free inquiry' are 'group investigation', 'PBL', 'project investigation' and 'IIM'. And the unit which apply 'free inquiry' on the fourth grade and the second semester in the elementary science. The results of this study are as follows: First, The person leading the lesson is not a teacher but learners. The focus of teaching-learning is not a unit but topic, problem or project on the science textbook. A teacher's role is not the deliverer of knowledge but the guide of learning. Second, the outcome of applying group investigation, PBL project investigation and IIM to 'free inquiry' is improvements of the problem-solving ability and the self-directed learning ability as well as building scientific attitude and social skills as educational effect in commonly. Third, to apply 'free inquiry' efficiently, teachers should understand each subject very well, teach a class with a thorough and concrete plan, and try to evaluate objectively.

• 대한자원환경지질학회:학술대회논문집
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• 대한자원환경지질학회 2001년도 춘계 공동학술발표회
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• pp.259-262
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• 2001

• 한국광학회:학술대회논문집
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• 한국광학회 1990년도 제5회 파동 및 레이저 학술발표회 5th Conference on Waves and lasers 논문집 - 한국광학회
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• pp.211-214
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• 1990

Investigation of GaAs/AlGaAs QW carried out by using PL and Absorption spectroscopy. In order to get high resolution (0.76meV) and low noise, proper experimental system was set-up. From measurements, we have deduced the properties of GaAs/AlGaAs QW, such as the residual impurity, well thickness, crystal quality, interface abruptness and well thickness uniformity. Also we can obtain other properties such as sub-band absorption by using Absorption Spectroscopy.

• 한국지하수토양환경학회지:지하수토양환경
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• 제25권2호
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• pp.1-8
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• 2020

In general, the estimation of optimum yield for the radial collector well is determined by the empirical equation or numerical modeling, in which hydraulic conductivity of the aquifer is a main influence factor. Hydraulic conductivities of 164 soil samples collected from boreholes and horizontal wells (average length: about 50 m) installed during well construction in the Anseong stream were drawn in two-dimensional map by the Kriging method and utilized in this study. Hydraulic conductivity analyses by Representative Elementary Count (REC) indicated the average hydraulic conductivity is similar to that of the pumping test when the number of samples reaches about 1,000, which correspond to 1,000 ㎡. Pumping test was also conducted at 1 pumping well and 13 observation wells to estimate hydraulic conductivities at each observation well. REC analysis indicated that the average value of hydraulic conductivity calculated from at least four observation wells is valid as a representative value. The overall result suggested that multiple observation wells or multiple pumping-observation well systems that are located within the range of horizontal wells should be utilized to properly estimate the representative hydraulic conductivity values and the yield of a radial collector well.

• 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.117.1-117.1
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• 2003

Colchicine is a drug well known for its use in the therapy of acute attacks of gouty arthritis. Two death caused by oral ingestion of colchicine was reported. Two persons were all women. The one was 34 years old woman and with his boyfriend in a inn and the other was a housewife. The first one was a alcoholic but his boyfriend was afflicted with gout. So her boy friend carried over about 60 tablets of colchicine, 4 tablets of naltrexone and 22 tablets of fluoxetine. After her death there were remained colchicine, 2 tabs, naltraxone 4 tabs and fluoxetine 22 tabs. (omitted)

• 한국지역사회생활과학회지
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• 제15권2호
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• pp.109-121
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• 2004

This study is about the working mother's parental attitude and the psychological well-being of children. This investigation also analyzed the differences in the psychological well-being of children according to socio-demographic variables and whether there was a percieved affective nurturing attitude and monitoring of the mother. To study such differences, 437 second and third grade children with both parents working were chosen as the subjects of this investigation. The data was analyzed according to frequency, percentage, averages, standard deviation, Cronbach's alpha, t-test, one way ANOVA, and Duncan's mutiple comparison. The major finding were as follows: First, the results of examining the differences of the psychological well-being of children according to socio-demographic variables showed significant differences in the area of anxiety with respect to children's genders, maternal educational levels and maternal occupations. In the area of loneliness, the differences came only from the differences in the grade levels. Second, there were significant differences between loneliness and self-perceived competence in the psychological well-being of children according to the subjects' perception of an affective nurturing attitude and monitoring of mothers. In other words, it revealed that the group of children that strongly perceived an affective nurturing attitude and monitoring by their parents showed a lower level of loneliness and a higher level of self-perceived competence.

• 대한약학회:학술대회논문집
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• 대한약학회 2002년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2
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• pp.280.2-281
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• 2002

This presentation reports the trends of the drug abuses(DA) and the mortalities related to drug-toxicants(MDT) in the Central area of Korea in 2001. We surveyed the DA cases and MDT. which were requested to analyze the drug-toxicants in the Central district office of National Institute of Scientific Investigation. he detected drugs on DA cases were methamphetamine. marihuana. opiates. inhalants(toluene. butane. ropane). dextromethorphane. carisoprodol. benzodiazepines, nalbuphine. fenfluamine. and iscellaneous in order of cases. Men are more liable to drug abuses than women. and the most common age group was 30s. Surveys of MDT shows that the defected toxicants are paraquat(sedative). methomy(insecticide). dicholrvos (insecticide). benxodiaxeqines(anxiolytic), and miscellaneous in order do cases. Men's intoxications by the drug-toxicants are more occured than woman's And most common intoxicated age group was 40s. These trends of the DA cases and the MDT in Central Area fo Korea. can help the forensic toxicologists and government to plan the prevention policy of the DA cases and MDT as well as its future estimation.

• 한국지구물리탐사학회:학술대회논문집
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• 한국지구물리탐사학회 2007년도 공동학술대회 논문집
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• pp.24-41
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• 2007

In this paper several recent case studies of near surface geophysical applications in Greece are presented. The case studies are focused mostly in archeological site investigation, a field which is of high interest in Greece due to its reach historical heritage. The growing construction works in several parts of Greece as well as the increasing public interest in exploring and preserving cultural heritage lead to an increase of the application of nearsurface geophysics techniques as a preliminary investigation tool prior to engineering and archeological excavation works. Research efforts, presented in this work, are focused to extending and adapting standard nearsurface techniques in order to be made more effective for archaeological site investigation. The presented case studies involve not only standard field investigation procedures but also novel approaches such as the use of non-spike electrodes, efficient measuring and instrumentation strategies, unusual configurations and measurement environments. Overall it shown that efficient and state-of-art nearsurface geophysical techniques used for archaeological prospection purposes provide significant archaeological and structural information valuable for archeologists, engineers and conservation scientists.

• 약학회지
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• 제41권3호
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• pp.277-282
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• 1997

Methamphetamine, which is the most commonly abused drug in Korea, exists in terms of d-, l- isomers and a racemate(dl). d-Methamphetamine is a potent central nervous system stimulant, whereas l-Methamphetamine is sold freely as a nasal decongestant. In addition, methamphetamine appears in different ratios of optical isomers by the clandestine synthesis applied. In this study, enetiomeric separation of methamphetamines was estabilished to distinguish the chirality of methamphetamines trafficked and abused in Korea. A gas chromatograph/mass spectrometer(GC/MS) system equipped with an achiral capillary column is used to isolate the isomers of methamphetamine after (S)-N-(trifluoroacetyl)-l-prolyl(TFP) deravatization.After analyzing 10 illicit methamphetamine powders and 10 positive urine samples, following findings were found: d-Methamphetamine was well resolved from l-Methamphetamine by chromatographic separation of TFP derivatibes on DB-5 with retention time of 11.80 and 11.35 min respectively. The detection of d-Methamphetamine in all 10 powders and 10 urine samples proves that all methamphetamines abused in Korea are illegally manyfactured and administred.

• 한국재난정보학회 논문집
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• 제11권4호
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• pp.515-519
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• 2015

'13년 87건, '14년 104건의 화학사고는 인명과 환경에 막대한 피해를 가져왔다. 또한 산업계는 피해처리와 복구에 많은 비용지출을 하였고 기업이미지에 큰 영향을 받았다. 대기 중으로의 빠른 확산과 독성을 갖는 화학사고는 근로자 뿐만 아니라 주변 거주 주민 등에도 위협적인 존재이다. 이러한, 화학사고의 원인을 철저히 분석하기 위해서는 체계적인 조사절차와 신뢰성 있는 결과가 도출되어야 한다. 본 연구를 통해 사고조사를 담당하는 각 기관의 제도를 비교 분석하여 화학사고 현장조사 체계마련 시 기본 자료로 활용이 가능할 것으로 판단된다.