• The Journal of the Korea Contents Association
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• v.15 no.3
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• pp.206-218
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• 2015

This single-blinded, nonequivalent control group pretest-posttest study was undertaken to evaluate the effectiveness of simulation education on clinical judgement, collaboration, communication skills, and perceived education practices and simulation design characteristics among student nurses in Korea. Participants were 47 students (19 in the experimental group and 28 in the control group) recruited by convenience sampling. The simulation based clinical reasoning education consisted of seven weekly, 120-minute high fidelity simulations. All participants completed the pretest and 7-week post measurements of a clinical judgment, collaboration, and communication skills with 4-week post measurement of collaboration, and participants in the experimental group provided a measurements of perceived education practices and simulation design characteristics. Data were analyzed using repeated measured ANOVA, and mixed linear model with SAS 9.2. Significant improvements were found in the experimental group for clinical judgment, collaboration, communication skill, and perceived education practices and simulation design characteristics. The study results show the impact of the perceived education practices and simulation design characteristics on facilitating the effectiveness of simulation education. The findings suggest a feasible and sound teaching method for student nurses and the need for further studies with a larger sample.

• Sleep Medicine and Psychophysiology
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• v.17 no.1
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• pp.34-40
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• 2010

Objectives: This study aimed to evaluate the clinical efficacy of individual cognitive behavioral therapy (CBT) for Patients with Primary or Secondary Insomnia. Methods: Participants were recruited from a primary care sleep clinic from January 2008 to June 2009. The study sample included 64 outpatients with primary insomnia (n=30) and secondary insomnia (n=34) according to the criteria of DSM-IV. Participants completed sleep diaries, Dysfunctional Beliefs and Attitudes about Sleep Scale-16 (DBAS), State-Trait Anxiety Inventory (STAI) before CBT and shortly after completion of CBT. CBT was provided in 7 weekly, 40-50-minute individual therapy sessions. Results: Both groups of patients with primary and secondary insomnia showed significant improvement in the DBAS and sleep parameters including sleep onset latency, total sleep time, and sleep efficiency. Repeated-measures ANOVA of the DBAS and sleep parameters showed no significant group-by-time interactions between patients with primary and secondary insomnia, suggesting the efficacy of CBT for patients with secondary insomnia was equivalent to that of CBT for patients with primary insomnia. Conclusion: This study suggests that CBT is effective for the management of primary and secondary insomnia in a primary care setting.

• Applied Biological Chemistry
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• v.47 no.3
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• pp.321-324
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• 2004

Smoke rods were prepared for 2 insecticides and 5 fungicides using powdered rice chaff as a combustible carrier, and their burning characteristics were investigated. The distribution of active ingredient was investigated after the application of the granular smoke generator containing fenarimol in the connected vinyl plastic house growing cucumber. The protective effects of fungicide smoke generators were evaluated against cucumber gray mold (Botrytis cinerea) and tomato late blight (Phytophthora infestans), and compared with commercial wettable powders. Smoke rods containing powdered rice chaff showed high smoking rates of AI that were higher than commercial smoke pellets. The deposition of fenarimol on the ground of vinyl plastic house was $26.2{\pm}7.7\;ng/cm^2$ when averaged from 9 sites, and application uniformity was found. Also, the protective effects of 5 fungicidal smoke rods against plant diseases were so similar to the commercial wettable powders with no phytotoxicity that smoke rod formulations containing rice chaff as a combustible carrier could be used as an effective formulation for pesticides.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2003.11a
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• pp.31-35
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• 2003

폴리카보네이트는 내열성과 투명성이 우수한데 비해 내후성이 좋지 않아 황변 및 물성이 저하되고, 내찰상성이 약하여 긁히기 쉬운데다 이물질에 의해 오염되기 쉬워 투명성이 저하되는 문제점이 있다. 이러한 단점을 극복하고, 사용하는 용도에 따라 요구되는 다양한 기능성을 부여하기 위하여 폴리카보네이트 표면에 기능성층을 형성시킴으로써 그 목적을 달성하고자 한다. 본 논문에서는 이온 주입기술을 이용하여, 폴리카보네이트 표면의 전기전도도 특성을 향상시키고, 피부암 및 백내장 등을 유발하는 유해한 자외선 (UV-A, UV-B)을 차단하려 한다. 표면전기전도도의 향상은 이물질로부터 오염되는 정도를 낮추며, 정전기를 방지할 수 있다. PC(Polycarbonate) 표면에 $N^+,\;Ar^+,\;Kr^+,\;Xe^+$ 이온을 에너지 20keV에서 50keV을 사용하여, 주입량 $5{\times}10^{15}\;{\sim}\7{\times}10^{16}\cm^2$ 로 조사하였다. 이온 주입된 PC의 표면을 두 접점 방법의 표면 저항 측정으로 표면전기전도도 특성을 알아보았고, 자외선차단 특성은 UV-Vis 로 분석하였다. 이들 전기적 광학적 특성간의 상관관계를 관찰하고, 이러한 특성을 나타내는 화학적 기능그룹들의 변화를 보기 위해 FTIR 분석법으로 관찰하였다. 이온조사량의 증가에 따라 표면저항은 $10^7{\Omega}/sq$까지 감소하여 표면전기특성을 증가시키며, 자외선 차단 특성은 UV-A를 95%까지 차단하여 인체에 유해한 자외선 차단에 유용함을 확인하였다. 이러한 특성은 PC 표면에 카본 네트워크 형성과 $\pi$전자들의 운동량을 증가시키는 구조로 고분자 사슬들의 결합구조 변형에 의한 것으로 생각된다.블을 가지고 파서를 설계하였다. 파서의 출력으로 AST가 생성되면 번역기는 AST를 탐색하면서 의미적으로 동등한 MSIL 코드를 생성하도록 시스템을 컴파일러 기법을 이용하여 모듈별로 구성하였다.적용하였다.n rate compared with conventional face recognition algorithms. 아니라 실내에서도 발생하고 있었다. 정량한 8개 화합물 각각과 총 휘발성 유기화합물의 스피어만 상관계수는 벤젠을 제외하고는 모두 유의하였다. 이중 톨루엔과 크실렌은 총 휘발성 유기화합물과 좋은 상관성 (톨루엔 0.76, 크실렌, 0.87)을 나타내었다. 이 연구는 톨루엔과 크실렌이 총 휘발성 유기화합물의 좋은 지표를 사용될 있고, 톨루엔, 에틸벤젠, 크실렌 등 많은 휘발성 유기화합물의 발생원은 실외뿐 아니라 실내에도 있음을 나타내고 있다.>10)의 $[^{18}F]F_2$를 얻었다. 결론: $^{18}O(p,n)^{18}F$ 핵반응을 이용하여 친전자성 방사성동위원소 $[^{18}F]F_2$를 생산하였다. 표적 챔버는 알루미늄으로 제작하였으며 본 연구에서 연구된 $[^{18}F]F_2$가스는 친핵성 치환반응으로 방사성동위원소를 도입하기 어려운 다양한 방사성의 약품개발에 유용하게 이용될 수 있을 것이다.었으나 움직임 보정 후 영상을 이용하여 비교한 경우, 결합능 변화가 선조체 영역에서 국한되어 나타나며 그 유의성이 움직임 보정 전에 비하여 낮음을 알 수 있었다. 결론: 뇌활성화 과제 수행시에 동반되는 피험자의 머리 움직임에 의하여 도파민 유리가 과대평가되었으며 이는 이 연구에서 제안한 영상정합을 이용한 움직임 보정기법에 의해서 개선되었다. 답이 없는 문제, 문제 만들기, 일반화가 가능한 문제 등으

• Journal of Korean Society of Transportation
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• v.23 no.7 s.85
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• pp.165-179
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• 2005

The object of this study is a development of a stochastic user equilibrium transit assignment algorithm for multiple user classes considering stochastic characteristics and heterogeneous attributes of passengers. The existing transit assignment algorithms have limits to attain realistic results because they assume a characteristic of passengers to be equal. Although one group with transit information and the other group without it have different trip patterns, the past studies could not explain the differences. For overcoming the problems, we use following methods. First, we apply a stochastic transit assignment model to obtain the difference of the perceived travel cost between passengers and apply a multiple user class assignment model to obtain the heterogeneous qualify of groups to get realistic results. Second, we assume that person trips have influence on the travel cost function in the development of model. Third, we use a C-logit model for solving IIA(independence of irrelevant alternatives) problems. According to repetition assigned trips and equivalent path cost have difference by each group and each path. The result comes close to stochastic user equilibrium and converging speed is very fast. The algorithm of this study is expected to make good use of evaluation tools in the transit policies by applying heterogeneous attributes and OD data.

• Journal of Digital Convergence
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• v.16 no.8
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• pp.221-231
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• 2018

The purpose of this study was to identify the effect of simulation integrated with problem based learning(SIM-PBL) on nursing students. A non-equivalent pre-post test of quasi-experimental design was used. 37 were assigned to an intervention group and 41 to a control group. SIM-PBL was applied to intervention group and simulation was applied to control group. Data were analyzed using the SPSS 20.0 program. There were significant increases in system thinking(t=2.14, p=.036), proactivity in problem solving(t=2.07, p=.042), and performance ability for medication(t=5.26, p=<.001) in the intervention group compared to the control group. However, there was no difference in learning flow between the intervention and control groups. In order to adapt to the clinical setting, it is necessary to consider the SIM-PBL needs to be considered in the curriculum of nursing students.

• Journal of the Korea Convergence Society
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• v.9 no.4
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• pp.409-421
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• 2018

The purpose of this study was to examine the effects of shoulder rehabilitation exercise convergence program. This study used a nonequivalent control group pretest-posttest design. A sample of 58 patients undergoing shoulder surgery, was included. The experimental group was given shoulder rehabilitation exercise convergence program including audiovisual education, shoulder rehabilitation exercise and exercise monitoring. The data were collected using a structured questionnaire and measured range of motion(ROM) of shoulder joint and were analyzed using descriptive statistics, ${\chi}^2-test$, t-test and ANCOVA. The experimental group reported significantly lower shoulder pain than control group(p<.001). Shoulder joint ROM and exercise self-efficacy were significantly higher in the experimental group than in the control group(p=.038; p<.001). This findings indicate that shoulder rehabilitation exercise convergence program can be an effective intervention for shoulder surgery patients. Continued development of convergence interventions for patients undergoing various conditions in practice, is suggested.

• Journal of the Korea Convergence Society
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• v.11 no.10
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• pp.401-407
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• 2020

This study is the quasi-experimental research of nonequivalent groups and is designed to measure and compare the awareness and knowledge of 2 groups of undergraduate nursing students - one group who received the education of biomedical ethics and brain-death organ donation and the other group who did not receive the education - regarding biomedical ethics and brain-death organ donation. We conducted this research for the 76 undergraduate nursing students of a certain university located in "C" city. Collected data were analyzed by Fischer's exact test and t-test, ANCOVA using SPSS 23.0 program. As result of the research, it was found that there was significant difference in the knowledge of brain-death organ donation between the above 2 groups (t=35.21, p=.000). In this regard, the education of biomedical ethics should be included in the curriculum of undergraduate nursing students in consideration of factors influencing the awareness of biomedical ethics.

• Journal of the Korean Institute of Gas
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• v.13 no.4
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• pp.1-7
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• 2009

In recent years, the needs for more fuel-efficient and lower-emission vehicles have driven to use the alternative fuel of LPG(Liquefied Petroleum Gas) which is able to meet the more stringent legislations without many modifications to current engine. LPLi (Liquid Phase LPG Injection) system (the 3rd generation LPG injection system) is the core technology to produce power equivalent to a gasoline engine with less emissions. The LPG fuel pump can supply the compressed LP gas in the liquid phase to engine. The fuel filter is attached in the fuel pump to eliminate the remnants in the liquid phased LP gas and the performance of blowoff flow for a pump can be varied with various filters. In this study, experiments were conducted to investigate the performance and efficiency of the impeller type LPG fuel pump under various filter types of microfiber, double mesh and external filter. And blowoff flow for a LPG fuel pump was measured according to the temperature of the fuel.

• The Journal of the Korea Contents Association
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• v.18 no.2
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• pp.502-508
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• 2018

This study was a quasi-experimental design with a non-equivalent control group to investigate the effects of yoga nidra on self-esteem in nursing students. Thirty-nine undergraduate nursing students were selected by convenience sampling, with 19 assigned to an yoga nidra group and 20 assigned to a control group. The data were collected from May 1 to June 24, 2016. The yoga nidra intervention was performed for 60 minutes per session, two sessions per a week for 8 weeks. The control group did not participate in the yoga nidra and had no designated intervention. Self-esteem were measured with Rosenberg's Self-Esteem Scale. The yoga nidra group scores were significantly increased in self-esteem levels compared with the control group. In conclusion, these findings indicate that yoga nidra intervention would elevate self-esteem levels in nursing students and it can be used as a tool to improve the self - esteem of university students as well as nursing college students.