• 대한토목학회논문집
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• 제14권2호
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• pp.343-354
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• 1994

본 연구에서는 군말뚝에서 말뚝의 상대적인 위치에 따라 다른 downdrag 하중분포를 발생시키는 그룹효과를 이론적인 해석과 수치해석을 통하여 연구 검토하였다. 3차원 비선형 유한요소 해석으로 말뚝 간격과 개수에 따른 군말뚝에서의 상호작용계수를 산정하였다. 연구결과 그룹안의 개개 말뚝들은 단독말뚝에 비해서 말뚝 간격에 따라 현저한 상호작용계수의 변화를 보였다. 또한 본 논문에서 제안된 방법에 의한 그룹안에서 말뚝들의 위치에 따른 downdrag 하중산정을 계산예를 통하여 그 외 여러 해석적인 방법들과 비교 검토하였다.

• 한국지반공학회지:지반
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• 제6권3호
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• pp.13-30
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• 1990

본 연구에서는 깊은 기초의 내진설계에 적용하기 위해, 지진하중에 의한 말뚝기초의 응답을 산출하여 비교, 검토하였다. 본 연구에서 사용된 해석 방법은 Subgrade Reaction Theory 및 탄성해석법과 같은 유사정적 해석방법, Prakash및 Gazetas가 각각 제안한 동적 해석방법이며, 예제해석을 통해 말뚝의 최대 상대변위 및 최대 휨모멘트를 위의 각 방법을 이용해서 산출하였고, 그 결과를 각각 비교하였다. 또한 말뚝의 군효과를 근사적으로 고려하여 Novak에 의해 수행된 실험 결과와 비교하였다. 해석결과를 분석해 볼 때 Kaynia와 Kausel이 제안한 동적 Group Interaction Factor Approach 에 의한 땅법 및 Gazetas가 제안한 방법의 최대 상대변위는 실측치와 부합하게 산정되었으며, Prakash 가 제안한 방법과 정적 Group Interaction Factor Approach에 의한 변위 및 휨모멘트는 과대평가되었다. 그러므로, 말뚝의 내진설계시에 동적 Group Interaction Factor Approach와 결합한 유사정적해석 을 사용하고 Gazetas가 제안한 동적방법에 의해 이를 검토하는 것이 바람직하다.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2002년도 기초기술학술발표회
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• pp.11-29
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• 2002

Current design of pile group is based on the estimation of the overall bearing capacity of a pile group from that of a single pile using a group efficiency. However, the behaviors of a pile group are influenced by various factors such as method of pile installation, pile-soil-pile interaction, cap-soil-pile interaction, etc. Thus it is practically impossible to take into account these factors reasonably with the only group efficiency, In this paper, a new method for the design of pile groups is proposed, where the significant factors affecting the behavior of a pile group are considered separately by adopting several efficiencies. Furthermore, in the proposed method, the load transfer characteristics of piles and the difference of pile behaviors with respect to the pile locations in group can be taken into account. The efficiencies for the method are determined using the settlement failure criterion, which is consistent with the concept of allowable settlement for structures. The efficiencies calculated from the results of existing model tests are presented, and the bearing capacity of a pile group in the other model test is calculated and compared with that from the test result, to verify the validity of the proposed method.

• 한국정보시스템학회지:정보시스템연구
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• 제22권2호
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• pp.1-24
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• 2013

The main purpose of this study is to understand how the characteristics of social network services' social group can impact customer satisfaction, trust and repurchase intention. For this, this study extracts five social group factors(word of mouth effect, social interaction, collectivism, variety seeking, information seeking) based on relevant literature reviews. In addition, the study examines the moderating effects of utilitarian value on the relationships between customer satisfaction and trust and intention to repurchase. The proposed model of this study is empirically tested using survey data collected from 220 social commerce users. The results indicated that social group factors except social interaction were positively related to customer satisfaction. In addition, social group factors except social interaction and information seeking were positively related to trust. The results also showed that customer satisfaction and trust had a significant influence on intention to repurchase. The moderating effects of utilitarian value also was significant. The results of this study presented the strategic implications for social commerce firms.

• 한국지반공학회논문집
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• 제19권1호
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• pp.31-40
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• 2003

현행 무리말뚝 설계에서는 하나의 무리효율을 이용하여 개별말뚝의 지지력으로부터 전체 무리말뚝의 지지력을 산정하고 있다. 그러나, 무리말뚝의 지지 거동은 말뚝 시공 방법, 말뚝지반말뚝 상호작용, 캡-지반말뚝 상호작용 등의 복합적인 영향을 받으며, 따라서 하나의 무리효율만으로 이렇게 다양한 영향 요소들을 합리적으로 고려하는 것은 불가능하다. 본 논문에서는 다양한 효율을 도입하여, 이들 영향 요소들을 분리하여 고려할 수 있는 무리말뚝 설계 방법을 제안하였다. 제안된 방법에서는 이 외에도 말뚝의 하중 전이 특성과 위치에 따른 말뚝 거동의 차이를 고려할 수 있으며, 침하 기준을 이용한 효율의 산정을 통해 침하 관점의 설계가 이루어질 수 있다. 기존의 모형실험 결과로부터 제안된 설계 방법에 적용할 수 있는 효율을 산정하여 제시하였으며, 이를 이용하여 또 다른 모형 실험의 지지력을 산정하고 시험결과와 비교함으로써 제안된 방법의 유효성을 평가하였다.

• 한국간호교육학회지
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• 제18권2호
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• pp.323-331
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• 2012

Purpose: Level of meta-cognition of students has been regarded as one of the crucial factors on web-based learning. This study aimed to describe interaction type in small group discussion of the nursing graduate students and to investigate learning consequences and interaction types in group discussion on meta-cognition level. Method: Twenty six graduate nursing students attending the class on-line at the K university in Seoul were included in the study. We measured their meta-cognition level and learning attitude. We also scored their individual and group reports as well as analyzed interaction type by reviewing the dialogue of the group discussion. Results: The participants showed low frequency of exploratory interaction and high frequency of integrative interaction in the cognitive interaction category. They showed frequent modification interaction in the meta-cognitive interaction category. Interestingly, the students with lower level of meta-cognition achieved significantly greater scores in the individual assignments. High functioning group consisting of the students with high meta-cognitive level produced greater group report. Conclusion: A new strategy is needed to encourage in-depth interaction in a group discussion of nursing students. Meta-cognitive level of the students should be considered to form a small group for discussion in order to improve group activities.

• 대한간호학회지
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• 제46권3호
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• pp.431-442
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• 2016

Purpose: This paper was conducted to validate the Korean version of the Peer Group Caring Interaction Scale (PGCIS-K) that measures caring behaviors as experienced by nursing students. Methods: Translation of the PGCIS-K was validated through forward-backward translation methods. Survey data were collected from 218 nursing students in a nursing school. Construct validity and criterion-related validity were evaluated. Internal consistency and the Guttman split-half coefficient were calculated to assess reliability. Results: The PGIS-K showed reliability except for 4 items (Cronbach's ${\alpha}=.91$, Guttman split-half coefficient=.85), which were low (<.30) or negatively correlated with the total scale. A 12-item reduced form of the PGCIS-K was developed by item-analysis and construct validity evidence. Factor loading for the 12 items on 2 factors ranged from .47~.82, which explained 58.4% of the total variance. Two factors were named 'modeling and assistance (Cronbach's ${\alpha}=.87$)' and 'communication and sharing (Cronbach's ${\alpha}=.82$)'. Convergent validity, discriminant validity, and criterion validity were supported according to the correlation coefficients of the 2 factors with other measure. Conclusion: The findings suggest preliminary evidence that the 12-item PGCIS-K can be used to measure nursing students' peer group caring interactions in Korea. Additional studies are recommended to continue the psychometric evaluation of this scale. Also, it can be extended to measure graduate nursing students or staff nurses' peer group caring interaction.

• 한국보육지원학회지
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• 제8권6호
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• pp.99-125
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• 2012

교사-유아 간의 상호작용은 유치원 평가와 어린이집 평가인증에 포함되고 새로 고시된 누리과정에서도 중요한 교수-학습 방법으로 간주되고 있다. 이에 본 연구는 유아 교사들의 전반적인 상호작용 수준을 알아보고, 이 상호작용 수준이 기관, 교사 및 유아집단의 특성에 따라 어떤 차이가 있는 지를 실증적으로 분석해 보고자 하였다. 이를 위해 교사-유아 상호 작용을 정서적, 언어적, 행동적 상호작용으로 구분하고, 기관 유형, 교사 특성 및 유아집단의 특성에 따른 직접효과와 상호작용효과를 분석하였다. 유아교사 191명을 대상으로 설문조사를 실시하고 선택적 면담조사를 병행한 결과는, 전체 교사의 상호작용 평균이 5점 척도에서 3.96으로 상당히 높게 나타났으며 기관 유형이나 유아집단의 특성에 따라서는 차이가 나타나지 않았다. 그러나 40대 이상 연령 교사들의 정서적 상호작용 수준이 의미있게 더 높고, 대졸이상 교사들의 행동적 상호작용 수준이 상대적으로 더 높게 나타났다. 또 교육경력이 6년 이상인 교사의 세 가지 상호작용 수준이 모두 의미 있게 더 높았다. 본 연구 결과에 의하면 유아교사의 상호작용은 교사의 개인특성변인이 기관 유형이나 유아집단특성보다 더 영향을 미치는 요인이라고 할 수 있다.

• 한국임상약학회지
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• 제25권3호
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• pp.138-144
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• 2015

Objective: It is to evaluate the drug interaction monitoring program as a pilot project to develop a pharmaceutical care model in a medical intensive care unit and to analyze the influencing factors of drug interactions. Method: Electronic medical records were retrospectively investigated for 116 patients who had been hospitalized in a medical intensive care unit from October to December in 2014. The prevalence of adverse reaction with risk rating higher than 'D' was investigated by Lexi-$Comp^{(R)}$ Online database. The factors related with potential drug interaction and with treatment outcomes were analyzed. Results: The number of patients with a potential interaction of drug combination was 92 (79.3%). Average ages, the length of stay in the intensive care unit and the numbers of prescription drugs showed significant differences between drug interaction group and non-drug interaction group. Opioids (14.4%), antibiotics (7.2%), and diuretics (7.2%) were most responsible drug classes for drug interactions and the individual medications included furosemide (6.4%), tramadol (4.9%), and remifentanil (4.5%). There were 950 cases with a risk rating of 'C' (84.6%), 142 cases with a risk rating of 'D' (12.6%), and 31 cases with a risk rating of 'X' (avoid combination) (2.8%). The factors affecting drug interactions were the number of drugs prescribed (p < 0.0001) and the length of stay at intensive care unit (p < 0.01). The patients in intensive care unit showed a high incidence of adverse reactions related to potential drug interaction. Therefore, drug interaction monitoring program as a one of pharmaceutical care services was successfully piloted and it showed to prevent adverse reaction and to improve therapeutic outcomes. Conclusion: Active participation of a pharmacist in the drug management at the intensive care unit should be considered.

• 한국항해학회지
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• 제10권2호
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• pp.115-138
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• 1986

The purpose of this study was to explore the nature of the relationship between several factors representing the mental health enumerated in the psychology literature and the dadaptability to group life which all of th KMU students encounter. An empirical study was carried out to examine not only the differences in mental health of 4 kinds of students groups but also the impact of interaction which mental health affects to the adaptability to group life among grades. The several factors of the mental health can be utilized in suggesting the theoretical bases for the countermeasures of the effective group life along with the motivation of KMU students. The data investigating the impact of interaction between mental health and the adaptability to group life were collected from 537 KMU students selected from 4 different kinds of population-(1) Freshman group (2) Sophomore group (3) Junior group (4) Senior group-by the use of questionnaire method and interview. The 2-way analysis of variance (MANOVA) were used to analyze the data. The results of this study were found as follows; (1) There are significant difference in the cognition of gloom, personal sensitiveness, anagonism, anxiety and total score among 4 grade groups, (2) The freshmen group and the sophomore group have perceived gloom, personal sensitiveness, antagonism, and total score more acutely than the junior group and senior group have. (3) There are significant differences in perceiving an obession and personal sensitiveness according to the adaptation types to the group life; adaopted type, non-adapted type. The non-adapted group has recognized an obsession and personal sensitiveness more seriously than the adapted group has. (4) The interaction between grades and the adaptation status doesn't have an direct influence on the mental health.