• 과학교육연구지
• /
• 제45권2호
• /
• pp.201-218
• /
• 2021

본 연구의 목적은 미세먼지 문제에 적극적으로 대응하고 있는 시민의 과학적 참여와 실천 활동 사례들을 질적으로 분석하는 것이다. 시민들의 참여와 실천 활동은 '문제인식', '정보 수집 및 분석', '공유와 확산' 단계를 토대로 귀납적으로 범주화하여, 조사하였다. 연구 결과, '문제인식' 단계에서는 두 참여자 모두 건강에 대한 위협을 느끼며 문제의 심각성을 인식하고, 공공 데이터의 정확성을 의심하며 적극적인 실천을 시작하였다. '정보 수집 및 분석 단계'에서 한 참여자는 좀 더 정확하고 자신의 상황에 적합한 정보를 얻기 위해 최대한 많은 정보를 수집하여 비교한 반면, 다른 참여자는 자신의 상황에 맞는 정보를 얻기 위해 직접 여러 실험들을 수행하였다. 끝으로 '공유와 확산' 단계에서는 두 참여자 모두 온라인 환경을 기반으로 여러 자료를 제작하여 공유하였으며, 다른 이들의 작은 실천과 변화를 통해 공헌감을 느끼며 활동을 지속해 나갔다. 이러한 결과가 시민 과학교육 및 과학 소양 교육 측면에서 갖는 시사점을 논의하였다.

• 한국초등과학교육학회지:초등과학교육
• /
• 제26권3호
• /
• pp.286-294
• /
• 2007

This study investigated the relationship between elementary school students' creative problem solving skills in terms of science and cognitive strategies. Creative problem solving in science was measured by 4 variables; appropriateness, scientific ability, concreteness, and originality. Cognitive strategies were measured by 6 variables; surface(rehearsal), deep(elaboration and organization), and metacognitive strategies(planning, monitoring, and regulating). The KEDI Creative Problems Solving Test in Science(Cho et al., 1997) and the Motivated Strategies for Learning Questionnaire(Pintrich & DeGroot, 1990) were administered to 72 subjects. Data were analyzed by means of Pearson's correlation and multiple regression analysis. Our findings indicated a positive correlation between creative problem solving in science and cognitive strategies. The surface cognitive strategy (rehearsal) positively predicted the total score, the scientific ability's score, the concrete score, and the original score of creative problem solving in science. The deep cognitive strategy(organization) positively predicted the appropriate score and the metacognitive strategy(planning) positively predicted the original score of scientific creative problem solving skills.

• 정보기술과데이타베이스저널
• /
• 제3권2호
• /
• pp.53-73
• /
• 1996

Thesedays more collaboration is required of scholars than before, because some complex problems are beyond the individuals' research capability. Traditional print-based journal systems have been playing a role of supporting scientific collaboration, in that they provide the state-of-the-art knowledge. Those journal systems, however, are known to have some problems. To cope with some of those problems of the print-based journal systems, electronic journal systems have been suggested and implemented. Investigation shows us that electronic journal systems still have some problems. This paper proposes a new form of electronic journal system, structured electronic journal system, which is believed to better support the scientific collaboration. It is designed so that it is easier to figure out the synopsis of an article and so that authors and referees of a submitted paper can participate in the discussion for verifying the significance of the paper. Object-oriented design of a structured electronic journal system which is to be built on top of a object-oriented database system is explained with example structures.

• 시큐리티연구
• /
• 제5호
• /
• pp.109-130
• /
• 2002

As proceeding Munmin and Kukmin's government, it is to bring in regionalism of genernal public administration and police administration, specialization, efficiency issue, demand inventing of audit technique to meet this trends. Especially, according to supporting qualitative improvement of the audit, its environment faced that orienting performance audit emphasis on not the legality but the efficiency more systematic and scientific theory or technique. In order to attain police audit's efficiency through performance audit, this study discussed that scientific management techniques should be applied police audit. Accordingly, the primary purpose of this study is to apply public audit to scientific management technique, bring to light limits in public sector(especially, police sector). To be efficiency audit(namely, performance audit), 1) OR techniques are explained linear programming, network modeling, PERT/CPM, queuing matrix model, simulation, 2) Statistical analysis methods are argued delphi technique, data envelopment analysis(DEA), analytic hierarchical process(AHP), time series analysis models etc.

• 한국전자파학회지:전자파기술
• /
• 제5권2호
• /
• pp.3-9
• /
• 1994

과학관측 로케트 KSR-420S에 탑재하는 원격측정 시스템은 로케트가 비행중에 갖게되는 응력분포, 온도분포, 속도, 가속도, 압력,자세 등의 제반특성 및 각종 회로동작 상태에 관한 정보, 오존, 이온, X-선 등의 과학연구용 관측 데이타를 취득하여 지상국으로 전송한다. 본 연구에서는 KSR-420S에 탑재된 PCM/FM 원격측정 시스템에 대해서 기술하였다.

• 한국초등과학교육학회지:초등과학교육
• /
• 제33권1호
• /
• pp.162-171
• /
• 2014

The use of evidence is very important in scientific argumentation. This study investigated the types and levels of evidence in scientific argumentation in an elementary science class. 34 fourth graders in a class were selected as subjects, and argumentation was performed in seven lessons on 'Heat transfer and our lives' unit. Small group argumentation was recorded, transcribed and used as data for analyses. The analyses found the following results. First, in regard of the types of evidence, personal evidence dominated over authority-based evidence. Second, in the analysis of the levels of evidence, using inappropriate evidence was found to account for the highest percentage, followed by using appropriate evidence and just arguments without evidence. There were quite a lot of cases of arguments without evidence. It was found that the types and levels of evidence that students used could change depending on the relevance between experiments and argument tasks.

• Coupled systems mechanics
• /
• 제7권2호
• /
• pp.211-232
• /
• 2018

In this work we present an upscaling technique for multi-scale computations based on a stochastic model calibration technique. We consider a coarse-scale continuum material model described in the framework of generalized standard materials. The model parameters are considered uncertain, and are determined in a Bayesian framework for the given fine scale data in a form of stored energy and dissipation potential. The proposed stochastic upscaling approach is independent w.r.t. the choice of models on coarse and fine scales. Simple numerical examples are shown to demonstrate the ability of the proposed approach to calibrate coarse scale elastic and inelastic material parameters.

• Archives of Pharmacal Research
• /
• 제16권3호
• /
• pp.175-179
• /
• 1993

Gas chromoatography with flame ionization detector (FID) along with mass spectrometry (GC/MS) were used for the screening and quantification of methamphetamine (MA) and its major metabolite, amphetamine (AM0, in blood and urine in eleven fatal cases in which MA abuse was suspected. Postmortem blood MA varied from $0.5-30.2\;\mu{g/ml}$, while Am levels ranged from none detected (6 of 11 cases) to 4.8 .mu.g/ml. Additionally, distribution studies were performed in three of these cases in which tissue smaples were available for evaluation. Liver contained the highest ocncentration of MA among the tissu samples. In eight of the eleven cases, when no other direct cause of death was evident (i.e. 3 cases of traumatic dath0, either no blood AM was found or the ratio of MA/AM was 3.4 or greater. These data are consistent with acute MA use followed by death due to acute drug intoxication or by the occurrence of hypersensitivity and reverse seen in cases of chronic drug abuse.

• 아동학회지
• /
• 제23권6호
• /
• pp.103-119
• /
• 2002

In this investigation of the effectiveness of the Project Approach Method the 32 4-to 5-year-old subjects (16 each in the experimental and comparative groups) were pre-tested before the Project Approach Method was applied (23 times over 7 weeks) in the experimental group while the comparative group had science activities using standard unit methods of instruction. Then, all the children had a posr-test. Data were analyzed by t-test and ANCOVA. Results showed differences between the experimental group and the comparative group in their scientific problem solving ability. Specifically, effects were found on 14 sub-factors, but no difference were found on 3 sub-factors.

• 한국식품과학회지
• /
• 제36권4호
• /
• pp.527-530
• /
• 2004

Adulteration of sesame oil using near infrared (NIR) spectroscopy was determined. Vegetable oils including sesame oil were scanned on the NIR spectrophotometer at 400-2500 nm. Partial least square (PLS) was applied on the standardized full NIR spectral data. Discriminant analysis with PLS is adequate for determination of sesame oil adulteration, except with decreasing adulteration rate. Designing of quality control system, which uses NIR spectroscopy to measure adulteration level of sesame oil is thus possible, although more work is required to give acceptable accuracy level.