• Journal of the Korea Convergence Society
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• v.11 no.3
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• pp.85-93
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• 2020

This study is to examine the randomized controlled trials abroad studies on ICT-based convergence studies in the elderly, and to investigate the types and effects of ICT-based interventions. Eight studies that meet the selection criteria were selected from 326 studies identified by three databases and hand-searching. As a result of this study, the most commonly used ICT were the three internet, followed by two tablets and mobile phones, one twoway videoconferencing, one Kinect, one robot, and one Blood Glucose Monitoring System. These results could be used for ICT-based convergence studies in Korea, and further studies should be conducted with higher quality studies such as randomized controlled trials.

• Proceedings of the Korean Society for Information Management Conference
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• 1999.08a
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• pp.5-8
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• 1999

본 연구는 이용자 지향적인 측면에서 적합문헌평가에 대한 다양한 기준들을 확인하고, 실제 연구자들이 그들의 연구 진행정도에 따라서 적합문헌을 평가하는 기준과 문헌의 적합여부평가에 인식적인 차이를 나타내는지를 밝히는데 그 목적이 있다. 이를 위하여 본 연구에서는 문헌조사연구 방법과 실험연구방법을 병행하여 사용하였다. 먼저 문헌조사 연구를 통하여 본 연구문제의 이론적 배경과 이용자 지향적 적합문헌 평가기준들을 종합적으로 분석하고, 실험에 사용할 평가기준들을 도출하였으며, 실험연구에서는 실제 연구문제를 가지고 있는 5명의 이용자를 무작위로 선정하여 그들의 연구진행 정도에 따른 적합평가기준을 시작(정보입수자각, 관련정보를 수집하는 최초의 단계), 진행(수집정보를 정리하고 초점을 형성, 집필의 시작단계), 완성단계(본격적인 집필과정으로 인용문헌들 결정하는 단계)로 나누어 조사하였다.

• The Korean Journal of Applied Statistics
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• v.1 no.1
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• pp.21-28
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• 1987

In agricultural research field experiments are usually conducted with the sam etreatments in the same experimental design over several locations for several years in order to draw widely adaptable results. For generalization of the results from the individual locations and the properties of the treatment responses may be evaluated by carrying out the combined analysis over agricultural climate zones or country level. A method of combined analysis of variance was presented and examined by applying to a set of data obtained from a series of rice variety adaptability trials conducted by Kyung Buk Provincial Office of Rural Developmention 1986.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2012.10a
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• pp.177-178
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• 2012

새로운 형태의 앵커 개발, 안전한 묘박 상황에 대한 모의 실험 연구 등을 위하여 실내에 장비된 앵커투묘실습장을 이용한다. 실험실습장에서의 주된 투묘 및 주묘실험은 대부분 모래 또는 뻘 상태에서 이루어지는데, 이 중 모래에서의 실험은 편의상 건 모래에서 실행하는 경우가 대부분이다. 그러나 실제 앵커가 사용되는 분야는 물속이기 때문에 젖은 모래에 대한 특성을 파악하고 있어야 한다. 이에 본 연구에서는 일반적으로 실무에서 많이 사용하고 있는 AC-14형과 ASS형 두 종류의 앵커모형을 이용하여 길이 6m의 수조에서 앵커 형태별 초기 투묘상태에 대한 장력을 측정하였고 그 특성을 상호 비교하였다. 또한 마른 모래 상태와 젖은 모래 상태에서의 앵커 형태별 파주특성의 차이를 비교하기 위하여 여러 상황에서의 실험을 실시하였다.

• Proceedings of the Korea Water Resources Association Conference
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• 2020.06a
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• pp.179-179
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• 2020

최근 관개배수를 위한 배수로의 활용범위는 농경지의 농업용수 공급과 더불어 농어촌 지역의 전기생산량 확보 등 다양한 방면에서 원활한 연구가 진행 중에 있다. 그 중 배수로 내부에 수차의 설치를 연계한 전기에너지 확보는 중소기업들을 대상으로 다양한 수차의 형상과 가동기법 등이 제시되고 있으며, 그 실효성에 대한 실험적 연구가 대두되고 있는 실정이다. 본 연구는 수류의 진행에 따라 양 방향으로 수차의 날개 회전이 가능한 양뱡향 수력발전기의 효율적인 운용 유·무 검토를 위하여 배수로 내 수심 및 유속 변화를 적용한 수리실험(원형실험)을 수행하였다. 또한, 실험 조건에 따른 수력발전기의 전기에너지 생산량을 예측하였다. 실험결과 수력발전기의 날개 면이 물과 접하는 최대 흘수심 구간에서 수차의 회전은 최대가속의 양상을 나타내었으며, 전기생산량은 날개 면의 흘수심이 감소함에 따라 비례적으로 낮게 측정되었다.

• Journal of the Korean Chemical Society
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• v.67 no.2
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• pp.106-115
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• 2023

The purpose of this study was to investigate the errors in science inquiry research reports written by students who won the encouragement award at the National Science Fair, and analyze the frequency of error types by school levels. The framework for analysis was constructed based on the table of contents of the students' science inquiry research reports, and the reports were analyzed for errors in six stages: Research question/hypothesis, prior research, experimental procedure, results, conclusions, and references. The study identified several types of errors at each stage, such as unreasonable research questions and wrong hypotheses in the research question/hypothesis stage, and limited considerations under certain conditions and selection of inappropriate experimental instruments in the experimental procedure stage. The study found that the frequency ratio of experimental procedure error was the highest across all school levels, and the order of errors varied by school level. Frequency ratio of error types of school level was: in the elementary school students' reports, errors were analyzed in the order of experimental procedure (36.88%), prior research (17.02%), conclusions (16.31%), research question/hypothesis (13.48%); In the middle school students' reports, experimental procedure (42.86%), conclusions (20.00%), prior research (14.28%), results (11.43%), research question/hypothesis (10.01%); In the high school students' reports, experimental procedure (45.16%), research question/ hypothesis (16.13%), conclusions (16.13%), and prior research (11.83%). The findings could be used to guide teachers in helping students conduct scientific inquiry research or write reports.

• Fire Protection Technology
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• s.52
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• pp.7-11
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• 2012

• 방재와보험
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• s.78
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• pp.18-23
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• 1998

• Journal of Wetlands Research
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• v.13 no.3
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• pp.677-686
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• 2011

This study proposes a formula to calculate length of river bed protection through experimental research and an experimental plant has been installed to investigate the parameters which influence the length of scouring in the river after overflowing the weir. Through hydraulic experiments, the critical velocity, difference of water level between upstream and downstream and height of weir have been selected as independent variables. And new formula to calculate a length of river bed protection is suggested as the result of this study in the consideration of complex weir that consists of movable and fixed weir. The new formula is verified through additional experiments. Results of this study can be used for weir structures' construction and maintenance plans.

• The Korean Journal of Applied Statistics
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• v.27 no.6
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• pp.1029-1038
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• 2014

Bayesian experimental design is a useful concept in applied statistics for the design of efficient experiments especially if prior knowledge in the experiment is available. However, a theoretical or numerical approach is not simple to implement. We review the concept of a Bayesian experiment approach for linear and nonlinear statistical models. We investigate relationships between prior knowledge and optimal design to identify Bayesian experimental design process characteristics. A balanced design is important if we do not have prior knowledge; however, prior knowledge is important in design and expert opinions should reflect an efficient analysis. Care should be taken if we set a small sample size with a vague improper prior since both Bayesian design and non-Bayesian design provide incorrect solutions.