• 대한가정학회지
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• 제46권9호
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• pp.61-69
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• 2008

The purpose of this study was to investigate similarities in behavioral characteristics between children and their friends. Aggression and withdrawal behaviors, in conjunction with the effects of friendship quality and characteristics on peer rejection were analyzed. The participants were 414 fifth and sixth grade primary school children recruited from public schools in Bucheon city. Firstly, the peer nomination index was used to assess aggression, withdrawal, and peer rejection. Secondly, children reported on the quality of their friendships using the Friendship Quality Scale. The results indicates similarities in aggression and withdrawal between children and friends. Friends' aggression and withdrawal characteristics predicted children's peer rejection, which was more pronounced with higher friendship quality.

• 한국전기전자재료학회논문지
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• 제15권4호
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• pp.325-331
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• 2002

In this paper, surface acoustic wave(SAW) bandpass filters using slanted finger interdigital electrode transducers(IDTs) are investigated. The slanted finger IDTs are used to design SAW filters with good shape factor, a flat passband, and good out-of-band rejection characteristic. For the filter design, input-output IDT structure was simulated with modified impulse model; uniform-withdrawal weighting IDTs, withdrawal-withdrawal weighting IDTs. SAW filters of uniform-withdrawal weighting IDTs structure were designed and fabricated on $128^{\circ}LiNbO_3$ piezoelectric substrates. Implemented SAW filter has a fractional bandwidth of 30%, center frequency of 70MHz and shape factor of $1.12\pm0.01$.

• Child Health Nursing Research
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• 제23권3호
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• pp.292-299
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• 2017

Purpose: This study was done to analyze nursing students' attitudes to life-sustaining treatment by measuring their awareness of biomedical ethics and resulting attitude toward withdrawal of life-sustaining treatment. Methods: This study was a descriptive research to assess the level of nursing students' awareness of biomedical ethics, attitude toward withdrawal of life-sustaining treatment, and correlations between these variables. After the nursing students signed a consent form they were assessed. Data collection was done from September 1 to October 25, 2016, and analyzed using SPSS 23.0 WIM Program. Results: There was a negative correlation and significant difference between nursing students' awareness of biomedical ethics and attitude toward withdrawal of life-sustaining treatment. There was a significant correlation among attitude toward withdrawal of life-sustaining treatment and medical ethics, mortality ethics. Conclusion: The findings in the study indicate that it is necessary to provide nursing students with easy access to continuous education to help them establish an acceptable view of withdrawal of life-sustaining treatment.

• Journal of the Korean Wood Science and Technology
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• 제44권5호
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• pp.736-742
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• 2016

나무못은 다양한 구조물의 목재부재들을 연결하는데 일반적으로 사용된다. 하지만 국산재의 나무못 유지력에 대한 자료는 매우 부족하다. 본 연구는 나무못의 직경과 천공여척이 유지력 특성에 미치는 영향에 대해 알아보기 위해 실시했다. 실험 블록은 두께 15 mm인 소나무와 잣나무 목재로 제작했다. 6, 8 및 10 mm 직경인 나무못은 밤나무, 잣나무 및 백합나무 목재로 각각 제작했다. 연구결과 나무못 직경이 증가하면 유지력은 선형으로 증가했지만 유지력 강도는 감소했다. 본 연구는 또한 천공여척이 작아질수록 유지력과 유지력 강도도 선형으로 증가하는 것을 보였다.

• 아동학회지
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• 제14권1호
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• pp.153-166
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• 1993

The purpose of the present study was to examine age differences in children's recall for information about aggression, prosociability, and social withdrawal of others and to investigate the impact of likeability on children's recall for social behavioral information. The subjects were 160 children, 20 boys and 20 girls each at 6, 8, 10, and 12 years of age. The subjects listened to descriptions of the social behavior of a hypothetical boy and girl and subsequently reported their recollections. These descriptions were drawn from Bukowski's(1990) stydy, the Pupil Evaluation Inventory, and the Pittsburgh Adjustment Scales. The data were analyzed with 2-way ANOVA, paired T-test, and correlation. Differences across the age levels were found in the number of behaviors correctly recalled for the behavioral descriptions of aggression, prosociability, and social withdrawal. Descriptions of aggressive behavior was recalled more when children listened to a hypothetical boy than to a hypothetical girl. Additional analyses revealed that at 6 years of age, children recalled more descriptions of aggressive and prosocial behavior than of withdrawal and at 10 and 12 years of age, children recalled more descriptions of withdrawal behavior than of aggressive and prosocial behaviors. The more negative the children's affective evaluations of the withdrawal behavior, the better they recalled the withdrawal behavior.

• 환경영향평가
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• 제21권5호
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• pp.715-724
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• 2012

In this study, we simulated water temperature in the downstream according to withdrawal types of dam using EFDC model. Three scenarios were assumed as water was released from the surface layer, the middle layer, and the bottom layer at intervals of 10m depth. In case of the surface layer withdrawal, the water temperature rose from March and lowered gradually after it reached a peak in August. The middle and the bottom layers effluence temperatures were lower than the surface layer temperature by maximum $15.9^{\circ}C$(in July), but after September, temperature inversion appeared. It was advantageous for the surface layer withdrawal to decrease cold damage and fog in downstream area and was possible to the middle and the bottom layers withdrawal from August to September. However, the reliability of model should be improved by accumulating the real-time information of water temperature.

• 한국가구학회지
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• 제10권2호
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• pp.1-8
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• 1999

The use of structural wood based panels like plywood, OSB in many applications involves the use of nails, and data on the performance of panel-nail connection are needed for design and comparative purpose. This study was carried out to develop basic information on nail performance(withdrawal, embedding, nailhead push through) with water absorption in plywood and OSB. In withdrawal resistance test, initial stiffness of plywood performed better than OSB in 24hr soaked condition. The soaked condition reduced average nail withdrawal resistance value about 46% (12d mail), 53%(8d nail) in OSB, 17%(12d mail), 24%(8d mail) in plywood. The nail embedding strength of plywood also performed better than that of OSB and retention value(wet strength/dry strength) yielded similar in each nail types. The nail head push through capacity of OSB was higher than that of plywood in dry condition, but equal or lower in soaked condition. Therefore, critical consideration about structural panels is required in moist applications. The average values of nail withdrawal, nail embedding strength and nail head push through resistance of tested materials meet the minimum requirement of various specification and standards.

• Journal of the Korean Wood Science and Technology
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• 제39권3호
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• pp.252-257
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• 2011

국내에서 생산되는 목재에 대한 나사못 유지력을 기존의 식으로부터 수정된 예측 식으로 나타내기 위해 나사 못 뽑기 실험을 실시했다. 본 연구에 사용된 나사못은 No. 6, No. 8 및 No. 10이었다. 예측 식은 길이가 서로 다른 No. 8 나사못의 실험결과와 매우 일치하였다. 나사못 유지력의 예측 식은 나사못의 직경과 관입길이 및 목재비중의 함수로 나타냈다. 예측 식은 나사못 길이가 25와 30 mm에서 5% 이내로 작게 예측되었으나 18과 38 mm에서 큰 값을 보였다.

• 한국표면공학회지
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• 제35권2호
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• pp.129-137
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• 2002

The purpose of solderability assessment is to predict the effectiveness of soldering process. It is important for companies pursuing zero defects manufacturing because poor solderability is the major cause of two third of soldering failures. The most versatile solderability method is wetting balance method. However, there exist so many indices for wettability in the wetting balance test e.g. time to reach 2/3 values of maximum wetting force, tine to reach zero wetting force, maximum withdrawal force. In this study, three solderability assessment methods, which were the maximum withdrawal force, the wetting balance and the dynamic contact angle (DCA), were evaluated by comparing each other. The wetting balance technique measures the solderability by recording the forces exerted from the specimen after being dipped into the molten solder. Then the force at equilibrium state can be used to calculate a contact angle, which is known as static contact angles. The DCA measures contact angles occurred during advancing and withdrawing of the specimen and the contact angles are known as dynamic contact angles. The maximum withdrawal force uses the maximum force during withdrawal movement and then a contact angle can be calculated. In this study, the maximum withdrawal force method was found to be an objective index for measuring the solderability and the experiment results indicated good agreement between the maximum withdrawal force and the wetting balance method.

• 임상간호연구
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• 제16권3호
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• pp.85-98
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• 2010

Purpose: This study was aimed to investigate the awareness and attitudes towards withdrawal of the life-sustaining treatment among nurses, physicians, and the families of intensive care unit (ICU) patients in general hospitals. Methods: The data were collected using a questionnaire from 80 ICU nurses, 80 physicians, and 80 families of ICU patients in general hospitals. Data were collected from February 22nd to May 31st, 2010. Rusults: ICU nurses, physicians, and families of ICU patients felt that objective and ethical guidelines were needed in making a decision to withdraw the life-sustaining treatment. The main reason for withdrawal of the life-sustaining treatment was found that the patients could not recovered despite many efforts. The role of nurses in decision making process on withdrawal of the life-sustaining treatment was considered very positive from the view of physicians and family members. The most important role of nurses for those patients in ICU was found to try their best to care for the patients. Conclusion: ICU nurses should play a major coordinating role in communication among patients, their families, and medical teams. Also, an appropriate roles of nurses in the process of the withdrawal of the life-sustaining treatment should be established.