• KSII Transactions on Internet and Information Systems (TIIS)
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• 제13권3호
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• pp.1626-1638
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• 2019

Social Networking Sites (SNS) provide people with unique online social interaction environments where users can disclose their thoughts, feelings, and opinions to their personal contacts. Although previous studies have suggested that such activities produce positive effects on SNS user well-being, this study considered potential negative effects by investigating the relationship between SNS use and depression. In particular, This stydy examined how specific activities are related to different types of social comparison (upward/downward/horizontal) and how these different types of social comparison influence depressed moods among college students. The analysis of a survey of 245 Instagram users found that (1) looking at other people's status updates and commenting on other people's photos influences upward social comparison, (2) frequency of Instagram use predicts upward/downward/horizontal social comparison, and (3) upward social comparison was postively associated with depression, while downward social comparison was negatively associated with depression. Furthermore, the path anlaysis show that social comparison mediates the effect of Instagram use on depression. It suggests that Instagram use does not directly increase depression but it can lead to depression when social comparison on Instagram triggers depression.

• 한국의류학회지
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• 제34권7호
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• pp.1078-1086
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• 2010

This study verifies the validity of the role-relaxed consumption scale developed by Kahle (1995b) for Korean consumers. This study also tests a model that includes consumer susceptibility to interpersonal influence along with attention to social comparison information as antecedents and their relationships. Data were gathered by surveying university students in Seoul, Korea, using convenience sampling, and 600 questionnaires were used in the statistical analysis. Correlation analysis, factor analysis, ANOVA and path analysis were conducted in order to analyze the data. It was proved that the role-relaxed consumption scale was effective for Korean consumers. A path analysis showed that consumer susceptibility to interpersonal influence and attention to social comparison information influence role-relaxed consumption.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 2000년도 추계학술대회논문집 - 한국공작기계학회
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• pp.181-187
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• 2000

This study is object to structural analysis comparison of continuous casting mold. A two-dimensional finite element model was developed to compute the temperature distribution, thermal stress and thermal strain behavior for continuous casting mold. For structural analysis using thermal analysis result from ANSYS. In other to structural analysis of continuous casting mold, many variables such as casting speed, cooling condition, film coefficient, convection and load condition are considered.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 2000년도 추계학술대회논문집 - 한국공작기계학회
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• pp.200-205
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• 2000

This study is object to thermal analysis comparison of continuous casting mold. A two-dimensional transient finite element model was developed to compute the temperature distribution for continuous casting mold. For thermal analysis using analysis result from ANSYS. In other to thermal analysis of continuous casting mold, many variables such as casting speed, cooling condition, film coefficient, convection and load condition are considered.

• 한국도로학회논문집
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• 제19권1호
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• pp.73-80
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• 2017

PURPOSES : This paper presents a comparison study between dynamic and static analyses of falling weight deflectometer (FWD) testing, which is a test used for evaluating layered material stiffness. METHODS: In this study, a forward model, based on nonlinear subgrade models, was developed via finite element analysis using ABAQUS. The subgrade material coefficients from granular and fine-grained soils were used to represent strong and weak subgrade stiffnesses, respectively. Furthermore, the nonlinearity in the analysis of multi-load FWD deflection measured from intact PCC slab was investigated using the deflection data obtained in this study. This pavement has a 14-inch-thick PCC slab over fine-grained soil. RESULTS: From case studies related to the nonlinearity of FWD analysis measured from intact PCC slab, a nonlinear subgrade model-based comparison study between the static and dynamic analyses of nondestructive FWD tests was shown to be effectively performed; this was achieved by investigating the primary difference in pavement responses between the static and dynamic analyses as based on the nonlinearity of soil model as well as the multi-load FWD deflection. CONCLUSIONS : In conclusion, a comparison between dynamic and static FEM analyses was conducted, as based on the FEM analysis performed on various pavement structures, in order to investigate the significance of the differences in pavement responses between the static and dynamic analyses.

• 디지털융복합연구
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• 제14권3호
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• pp.445-452
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• 2016

본 연구에서는 사람들이 흔히 경험하는 사회비교와 자기비교의 두 과정을 비교하여 살펴보고, 이와 관련된 이론들이 어떻게 응용될 수 있는지를 시사하고자 하였다. 이를 위해 사회비교이론에 해당하는 이론으로서 사회비교 이론과 자기평가유지모형을, 그리고 자기비교이론이라 할 수 있는 제어이론, 자기차이이론, 조절초점이론 및 시점비교이론을 차례로 개관하였다. 사회비교와 자기비교의 과정은 차이가 있지만, 이 두 비교 모두, 자기평가, 정서, 동기 및 행동에 영향을 미친다는 점에서는 유사하다. 사회비교와 자기비교에 관련된 연구들이 교육문제, 건강문제, 경제정의 및 대인관계 등에 대하여 지니는 응용적 함의들을 논의하였다.

• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 2001년도 봄 학술발표회 논문집
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• pp.121-127
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• 2001

To investigate the stability and integrity of offshore structures, it is necessary to estimates the significant ocean environmental loadings. They include hydrostatic pressure, wind, wave, current, tide, ice, earthquake, temperature, marine growth and scouring. Waves are of major importance among them because of the large forces acting on submerged parts of the structure caused by accompanying water motions. For the comparison of stress and deflection analysis tools, a vertical pile is applied under environmental loads. The analysis is concerned with SACS(Structural Analysis Computer System), ANSYS and C program. SACS and C program have nearly the same results but not ANSYS. This study shows the comparison of results obtained from 3 different approaches.

• 정보처리학회논문지A
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• 제10A권2호
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• pp.131-136
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• 2003

본 논문에서는 여러 가지 동시성제어 알고리즘들의 비교기준을 설정하는데 어떠한 항목들이 필요한지 알아보고 선택모델을 작성한다. 또한 작성된 선택모델을 이용하여 동시성제어 알고리즘들을 비교 분석한다. 분석 결과는 동시성제어 알고리즘이 필요한 시스템 개발시 사용자 환경에 맞는 최선의 알고리즘을 선택 할 수 있도록 하는데 크게 기여할 것이다.

• 한국농공학회지
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• 제32권E호
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• pp.59-66
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• 1990

Abstract The formulation of the probabilistic finite element method was briefly reviewed. The method was implemented into a computer program for frame analysis which has the same analogy as finite element analysis. Another program for Monte Carlo simulation of finite element analysis was written. Two sample structures were assumed and analized. The characteristics of the second moment statistics obtained by the probabilistic finite element method was examined through numerical studies. The applicability and limitation of the method were also evaluated in comparison with the data generated by Monte Carlo simulation.

• Bulletin of the Korean Chemical Society
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• 제23권3호
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• pp.417-422
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• 2002

Comparison studies of the Quantitative Structure Activity Relationship (QSAR) methods with new imidazo-quinolinedione derivatives were conducted using Comparative Molecular Field Analysis (CoMFA), Comparative Molecular Similarity Indices Analysis (CoMSIA), and the Hologram Quantitative Structure Activity Relationship (HQSAR). When the CoMFA crossvalidation value, q2, was 0.625, the Pearson correlation coefficient, r2, was 0.973. In CoMSIA, q2 was 0.52 and r2 was 0.979. In the HQSAR, q2 was 0.501 and r2 was 0.924. The best result was obtained using the CoMSIA method according to a comparison of the calculated values with the real in vitro cytotoxic activities against human ovarian cancer cell lines.