• 한국환경생태학회지
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• 제29권2호
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• pp.263-278
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• 2015

This study is intended to evaluate the value of functional aspect from the viewpoint of habitat. The indicators that are used in biotope evaluations are various, but most of them use the criteria to evaluate the naturality. This evaluation method cannot appropriately reflect the functional characteristics coming from relation to the surrounding biotope. In this study, the connectivity, cohesion and diversity between individual biotope are quantitatively measured by a landscape index. It is hard to draw the functional value of individual biotopes because the landscape index related to connectivity, cohesion and diversity comes from a landscape having a number of biotopes. The concept of contribution was used to overcome this limitation. The concept of contribution is to quantify how much each individual biotope contributes to the connectivity, cohesion, and diversity in a certain range of landscape by deriving the amount of change in the landscape index according to the presence or absence of each individual biotope. In order to understand the characteristics of evaluation results in functional aspect, this research has done a comparative analysis of the previous research findings in the same target area. According to the result of the research, individual biotopes such as artificial forests, fragmented natural forests, and small planting sites were highly rated.

• 한국학교보건학회지
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• 제24권2호
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• pp.155-163
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• 2011

Purpose: The purpose of this study was to investigate the Influences of Alcoholic Use Disorder, Family cohesion and Self-esteem on Mental health among University Students. Methods: Data were collected through questionnaires from 468 students and were analyzed using descriptive statistics, t-test, ANOVA, Scheffe's test, Pearson's correlation coefficients and Stepwise multiple regression analysis with SPSS/WIN 19.0 program. Results: As defined by alcoholic use disorder, the proportion of dependent group was 3.6%, disorder group was 16.9%, and genral group was 79.5%. The levels of alcoholic use disorder depended on gender and residence type. The levels of mental health depended on gender, family income and academic achievement. The mental health was significantly correlated with family cohesion and self-esteem. The influential factors affecting mental health were self-esteem, academic achievement, gender, which explained about 44.8% of the variance. Conclusion: The results of this study indicate that nursing intervention are needed to improve mental health and alcohol use disorder and that such variables should be carefully considered in intervention for university students.

• 가정과삶의질연구
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• 제18권2호
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• pp.45-60
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• 2000

The purpose of this study was to examine the relationship between household productivity and market productivity of the married men in their early adulthood. Proxy variables of the household productivity were housework time, family cohesion·adaptability and family economic resource. Also proxy variables of the market productivity were job performance, job satisfaction and wage. The main result were as follows: First, men's housework time is insignificantly related to men's job performance, job satisfaction, and wage. But men's housework time is reduced as men's wage. Second, family cohesion·adaptability is significantly and positively related to the married men's job performance. The married men's job performance is significantly and positively related to the family cohesion·adaptability.

• Geomechanics and Engineering
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• 제3권4호
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• pp.323-337
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• 2011

Israel's coastal region consists, mainly, of Pleistocene and Holocene sands with varying degrees of calcareous cementation, known locally as "kurkar". Previous studies of these materials emphasized the difficulty in their geotechnical characterization, due to their extreme variability. Consequently, it is difficult to estimate construction stability, displacements and deformations on, or within these soils. It is suggested that SPT and Menard pressuremeter tests may be used to characterize the properties of these materials. Values of elastic modulus obtained from pressuremeter tests may be used for displacement analyses at different strain levels, while accounting for the geometric dimensions (length/diameter ratio) of the test probe. A relationship was obtained between pressuremeter modulus and SPT blow count, consistent with published data for footing settlements on granular soils. Cohesion values, for a known friction angle, are estimated, by comparing field pressuremeter curves to curves from numerical (finite element or finite difference) analyses. The material analyzed in the paper is shown to be strain-softening, with the initial cohesion degrading to zero on development of plastic shear strains.

• 유통과학연구
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• 제14권8호
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• pp.101-112
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• 2016

Purpose - The objective of this study is to identify the effects of the communication cues and anonymity on group polarization in mobile communication settings, both in terms of route and extent. Research design, data and methodology - Laboratory experiments were conducted to achieve the above research objective; the effect of communication cues on group polarization with social presence as mediation and the direct effect of anonymity, social presence, and perceived cohesion were analyzed. The experiments were conducted by the participation of 240 people, who were divided into 48 groups of 5 people. Results - According to the results, the difference in intergroup polarization due to communication cues and anonymity was insignificant. From this analysis, the structural equation model, communication cues and anonymity did not affect group polarization through social presence. Moreover, anonymity did not affect group polarization through perceived cohesion; however, anonymity directly affected group polarization. Conclusions - This research can help to explain the discussions and the related decision-making actions on internet forums, which have recently come to the rise as well as provide foundational basis in newly establishing policies for the forums.

• 대한가정학회지
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• 제35권1호
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• pp.59-74
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• 1997

FACES II & III do not capture the high extremes of the dimension and are linear rather than curvilinear measure. FACES IV is the latest revision of FACES series and can capture two extreme dimension of Circumplex Model. The purpose of this study is to examine reliability and validity of reconstructed FACES using by FACES II, III, IV. Factor analysis showed that Cohesion and Adaptability consisted 3 factors (disengaged, connected, emmeshed/rigid, flexble, chaotic) Extremes on each dimension conceptually were opposite and they were uncorrelated with each other. FACES effectively predicted family function. Reliability coefficients of subscales ranged from 61~85 Reconstructed FACES had good internal consistency and construct and criterion related validity.

• 한국과학교육학회지
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• 제41권2호
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• pp.71-82
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• 2021

교과서를 통한 학습의 효율성을 최대화하기 위해서는 교과서에 수록된 텍스트 특성이 예상된 학습자의 특성(i.e., 언어적 및 인지적 능력, 배경지식 수준)에 따라 체계적으로 조절되어야 한다. 이에 따라 현재 연구에서는 과학교과서 개발에 이러한 체계적인 원칙이 반영되어 있는지를 알아보기 위하여 중학교 1, 2, 3학년 과학교과서의 학년 간 언어적 특성을 비교 분석하였다. 구체적으로 한국어 분석 프로그램인 Auto-Kohesion 시스템을 활용하여 기존 텍스트 분석 연구에 많이 활용되었던 텍스트 표층 구조 측정치, 어휘 관련 측정치, 통사적 복잡성 측정치와 같은 피상적 측정치에 더하여 여러 정합성 관련 측정치(e.g., 명사 반복, 접속사, 대명사)를 분석하였다. 주요 분석 결과, 대체로 어절 및 문장 길이, 어휘 빈도와 같은 피상적으로 두드러지는 특성에 대해서는 학년이 증가함에 따라 텍스트 복잡도가 상승하는 방향으로 단계적으로 조절이 이루어졌지만, 그 외의 많은 언어적 특질에 대해서는 체계적으로 조절되지 않은 것으로 나타났다. 특히 여러 정합성 측정치들이 교과서 개발 과정에서 충분히 고려되지 않은 것으로 시사되었다. 이러한 결과는 저학년 학습자들이 교과서를 사용할 때 발달 단계에 맞지 않는 어려운 텍스트를 접할 가능성이 있어서 학습 의욕 및 효율성 저하 현상이 발생할 수 있다는 것을 제시한다. 아울러 고학년 교과서가 고등 교육을 대비하여 더욱 복잡한 텍스트를 처리할 수 있는 능력을 개발시키기 위한 용도로 적절하지 않을 수 있음을 시사한다. 본 연구는, 추후 교과서 개발 과정에서, 예상된 독자 특성의 변화에 따라 정합성 측정치를 포함한 여러 언어적 특성이 단계적으로 조절되어야 함을 제안한다.

• 한국지반공학회논문집
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• 제21권5호
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• pp.75-82
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• 2005

사면 안정해석은 현장 조사로부터 얻어지는 지반강도 정수의 역할이 매우 중요한 인자로 작용한다. 본 연구에서는 사면안정성 분석에서 입력변수들에 대한 상대적인 평가를 위하여 민감도 분석을 수행하였다. 설정된 입력 변수들은 사면의 경사, 점착력, 내부마찰각의 3가지 종류로 선별하였다. 사면안정해석은 기본적으로 한계평형으로 해석하였으며 수집된 현장자료를 이용하여 분석한 결과 확률변수들은 정규분포를 나타내는 것으로 나타났다. 몬테카를로 시뮬레이션을 이용하여 입력변수들을 발생시켰으며 붕괴된 암반사면을 이용하여 민감도 분석을 실시하였다. 분석결과 암반사면의 안전율은 예상보다 낮게 나타나는 것을 알 수 있었다. 민감도 분석 지수(PCC)를 이용하여 분석한 결과 사면 안전율에는, 점착력과 사면 경사가 매우 민감한 영향을 미치는 것으로 나타났으며 내부마찰각은 상대적으로 낮은 민감성을 띠는 것으로 분석되었다.

• Geomechanics and Engineering
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• 제16권4호
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• pp.415-421
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• 2018

A location determining method is proposed for critical sliding surface in the stability analysis of the filling materials in karst caves. First, a preliminary location of the sliding surface is determined based on simulation results which includes displacement contour and plastic zone. The sliding surface will locate on the bottom contact interface when the friction angle is relative small. However, a weakened contact interface always becomes the critical sliding surface no matter what the friction angle is. Then when the friction angle becomes larger, the critical sliding surface inside fillings can be determined by a parabola, the coefficient of which increases linearly with the friction angle under the same cohesion. Finally, the critical sliding surface approximately remains unchanged with friction angle. The influence of cohesion is similar to that of friction angle. Although affected by shape, size or position of the karst cave, the critical sliding surface mainly depends on both friction angle and cohesion. Thus, this method is always useful in determining the critical sliding surface.

• 한국보건간호학회지
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• 제32권1호
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• pp.56-68
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• 2018

Purpose: This study was conducted to examine the personal and social environmental factors affecting leisure time physical activity (LTPA) among adults living in rural communities. Methods: A cross-sectional study was conducted with a convenience sample of 282 adults living in three rural towns of Chungcheongbuk province. Leisure time physical activity was assessed through the Korean version of the Global Physical Activity Questionnaire (GPAQ), and social influence and social cohesion of social environment were assessed using reliable and validated measures. Multiple logistic regression analysis was conducted to explore personal and social environmental factors associated with LTPA. Results: The overall prevalence of leisure-time physical activity (LTPA) was 40.0%. Multiple logistic regression analysis showed that LTPA participation was associated with gender (OR=2.60, 95% CI=1.47-4.58), healthy eating (OR=1.15, 95% CI=1.01-1.31), unhealthy eating (OR=0.70, 95% CI=0.53-0.93) and social influence for physical activity (OR=1.11, 95% CI=1.03-1.20). However, social cohesion was not correlated with engaging in LTPA. Conclusion: Both personal and social environmental factors are associated with LPTA among rural adults living in Eup-Myen regions. Interventions to promote LTPA would likely benefit from considering healthy dietary intake and social influence for physical activity.