• 한국심리학회지:여성
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• 제16권1호
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• pp.1-21
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• 2011

유아의 연령 및 기질, 그리고 부모양육행동이 유아의 심리사회적 문제에 미치는 영향에 있어서의 성차를 파악하기 위하여, 만 3-5세 유아 339명을 대상으로 이들의 내재화 및 외현화 문제행동, 유아의 기질, 부모 양육행동을 부모 보고에 의해 측정하였다. 변량분석과 위계적 회귀 분석을 실시한 결과 첫째, 유아의 외현화 문제행동 수준에서 연령과 성별의 주효과가, 내재화 문제행동 수준에서 연령과 성별의 상호작용 효과가 유의미하게 나타났다. 둘째, 성별에 따라 내재화 및 외현화 문제행동을 예측하는 변인에서도 차이가 나타났다. 즉, 남아에게서는 자극추구 기질, 위험회피 기질, 적대적 부모 양육행동이 두 문제행동의 유의미한 예측 변인으로 나타났다. 여아에게서는 자극추구 기질, 위험회피 기질, 온정적 부모 양육이 두 문제행동의 유의미한 예측변인으로 나타났다. 아울러, 문제행동에 있어서 여아들은 부모의 양육행동의 영향을, 남아들은 기질의 영향을 더 많이 받는 것으로 나타났다. 본 연구 결과는 유아기 문제행동에 대한 예방적 개입의 방향에 대해 시사한다. 본 연구결과의 의의와 제한점이 논의되었다.

• 한국HCI학회:학술대회논문집
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• 한국HCI학회 2006년도 학술대회 1부
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• pp.339-346
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• 2006

최근 들어 유치원과 초등학교에 로봇을 이용한 교육적 활용 연구가 시도되고 있다. 유비퀴터스 로봇 활용이 교사와 아동의 흥미 유발에 있어 매우 효과가 높은 것으로 나타나, 향후 유비쿼터스 로봇이 u-Learning 의 또 다른 매체로서의 가능성이 강조되고 있다. 이에 본 연구에서는 초등학교 수업에서 교사 보조 역할을 통한 유비퀴터스 로봇의 활용 가능성을 보기 위해, 초등 학생 6 학년의 기대 역할을 갖는 프로토 타입의 로봇과 컨텐츠를 개발하여 활용하는 실험을 실시하였다. 프로토 타입 로봇은 국어, 영어, 음악 교과를 대상으로 주기적으로 컨텐츠를 다운로드 할 수 있을 뿐만 아니라 아동의 얼굴과 이름을 저장하여 수업 운영 컨텐츠와 연동할 수 있다. 현장 실험을 통하여 아동이 유비쿼터스 로봇을 경험한 수업 시간의 횟수에 따라 로봇 외형과 수업 보조 서비스에 대한 선호도 차이를 알아봄으로써, 초등학교에서 유비퀴터스 로봇을 이용한 r-Learning에 있어서 일시적 신기효과가 아닌 지속적인 영향을 줄 수 있는 요인을 찾아보았다. 실험 결과, 지속적인 HRI 유지에 영향을 끼칠 수 있는 외형적 요인으로 로봇 얼굴과 로봇과 아동간 관계성을 지향하는 컨텐츠 개발이 필요함을 보였다.

• Human Ecology Research
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• 제55권3호
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• pp.249-261
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• 2017

This study grasps the structural relationships between temperament, social support, and school adjustment by adolescents as well as investigates the mediating effect of positive psychological capital from relationships between temperament, social support, and school adjustment. Participants in this study consisted of 763 students in the second grade of five middle schools. Productive correlation analysis were conducted on data collected for this study using PASW statistics ver. 18.0 program; in addition, structural equation modeling analysis was conducted using AMOS ver. 18.0 program. The main findings are as follows. Paths appeared in different ways according to the investigation of mediating effect of positive psychological capital under the impact of temperament and social support on school adjustment of adolescents. Investigation showed that harm avoidance temperament had a statistically significant indirect effect on school adjustment with a medium of positive psychological capital. Novelty seeking temperament and persistence temperament had a direct impact on the school adjustment of adolescents; however, it appeared to also indicate an indirect impact through a medium of positive psychological capital. Social support seemed to indicate a direct impact on school adjustment of adolescents as well as an indirect impact through a medium of positive psychological capital. This study provides basic data to help in the school adjustment of adolescents using personal, environmental, and psychological variables that proves the importance of positive psychological capital in adolescence.

• 한국HCI학회:학술대회논문집
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• 한국HCI학회 2009년도 학술대회
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• pp.1198-1207
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• 2009

최근 WEB 2.0 환경을 통해 사용자는 직접 응용 프로그램과 데이터를 이용하여 새로운 컨텐츠를 생산하는 주체로 변모하고 있다. 이러한 사용자의 자발적이고 적극적인 참여는 'UCC(사용자 제작 컨텐츠)'라고 불리는 새로운 문화 컨텐츠의 활성화로 이어지고 있다. 특히 글과 그림, 소리 등이 총체적으로 엮여 있는 동영상 UCC 의 경우, 이야기 구조나 캐릭터가 갖는 내용적인 특성과 제작자의 제작 취지를 훼손없이 살릴 수 있다는 제작의 특성으로 인해 WEB 2.0 환경에서 사용자의 참여가 더욱 두드러지고 있다. 본 연구에서 '사용자들이 열광하는 동영상 UCC 는 어떤 특징을 갖는가?' 라는 질문에 답하기 위해 동영상을 시청하는 사용자의 몰입과 창의성 평가를 진행하였고 이에 영향을 주는 요인으로 동영상 UCC 를 구성하는 내용적인 특성인 이야기의 내러티브와 캐릭터의 과장성을 살펴 보았다. 그리고 이 요인들의 상호작용에 영향을 주는 매개변인으로 제작자의 제작의도에 따른 컨텐츠의 특성을 선정하였다. 제작자의 의도에 따른 컨텐츠의 특성을 분류하기 위해 라캉의 주체이론과 퍼스의 기호학 이론을 바탕으로 모형을 제안하였으며 이를 검증하기 위해 UCC 사용자들을 대상으로 현재 서비스 중인 동영상 UCC 를 보여주고 설문을 실시하였다. 연구결과 제안하는 모형의 적용가능성이 입증되었으며 제작자의 의도에 따른 컨텐츠의 특성에 따라 이야기의 내러티브나 캐릭터의 과장성이 사용자의 몰입과 창의성평가에 미치는 영향력이 다르게 나타나는 것을 확인할 수 있었다.

• Steel and Composite Structures
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• 제17권4호
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• pp.453-470
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• 2014

This article is the result of an investigation on the influence of a Pasternak elastic foundation on the stability of exponentially graded (EG) cylindrical shells under hydrostatic pressure, based on the first-order shear deformation theory (FOSDT) considering the shear stresses. The shear stresses shape function is distributed parabolic manner through the shell thickness. The governing equations of EG orthotropic cylindrical shells resting on the Pasternak elastic foundation on the basis of FOSDT are derived in the framework of Donnell-type shell theory. The novelty of present work is to achieve closed-form solutions for critical hydrostatic pressures of EG orthotropic cylindrical shells resting on Pasternak elastic foundation based on FOSDT. The expressions for critical hydrostatic pressures of EG orthotropic cylindrical shells with and without an elastic foundation based on CST are obtained, in special cases. Finally, the effects of Pasternak foundation, shear stresses, orthotropy and heterogeneity on critical hydrostatic pressures, based on FOSDT are investigated.

• Journal of Microbiology and Biotechnology
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• 제27권7호
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• pp.1359-1366
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• 2017

(E)-2-Methoxy-4-(3-(4-methoxyphenyl)prop-1-en-1-yl)phenol (MMPP), derived from butenal, is a recently synthesized Maillard reaction product. Owing to its novelty, little is known about the function of MMPP. In this study, we elucidated the effects of MMPP on apoptosis in cervical cancer by using the HeLa cervical cancer cell line, which is widely used in cancer research. We observed that MMPP was cytotoxic to HeLa cells and induced activation of caspase-3, -8, and -9, without affecting the expression of the viral oncogenes E6 and E7. In particular, the expression of the death receptors DR5 and FAS was significantly increased by MMPP treatment. There were no significant alterations of mitochondrial intrinsic factors. Taking all these results together, our findings show that MMPP primarily induces apoptosis in HeLa cervical cancer cells via the extrinsic apoptotic signaling pathway, accompanied by an enhanced expression of death receptors.

• The Journal of Asian Finance, Economics and Business
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• 제8권3호
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• pp.383-390
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• 2021

This study investigates the effect of shareholders' rights, disclosure, and transparency on firm value. This study also investigates whether corporate social responsibility (CSR) is pure moderation or quasi moderation in the effect of shareholders' rights, disclosure, and transparency on firm value. This study's novelty is building a model framework to increase firm value and the role of CSR in increasing firm value. This study used secondary data provided by Indonesia, Malaysia, and Thailand Stock Exchanges. The sample of this study is 142 companies with four years of observations from 2012-2015. Firm value is measured by Tobin's Q. While shareholder's rights, disclosure, and transparency are measured using the ASEAN scorecard. The analysis method used in this study is a fixed effect model using a panel data approach. The result of this study shows that shareholders' rights have a significant positive effect on firm value. However, disclosure and transparency do not affect firm value significantly. In comparison, the CSR disclosure has a moderation effect on the relationship between shareholders' rights and firm value. The CSR disclosure does not have a moderation effect on the relationship between disclosure and transparency and firm value.

• The Journal of Asian Finance, Economics and Business
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• 제8권7호
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• pp.255-264
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• 2021

The purpose of this study is to analyze the role of customer value and customer trust as a mediator of flexibility influence on customer retention. The study applies SEM tools with WarpPLS analysis and translates customer value and customer trust as mediation. This study was organized into three parts: exploratory research, descriptive research, and explanatory research. The quantitative approach in this study uses a survey method by taking samples from the population. This is a latent variable that is measured using a research instrument in the form of a questionnaire. The survey was conducted by distributing questionnaires to respondents. This research was conducted at PT. Nusa Prima Logistics Terminal Teluk Lamong by taking primary data, in the form of assessments or perceptions from respondents, so a survey was conducted by submitting a questionnaire directly to 194 respondents. Quantitative data analysis was performed using Structural Equation Modeling (SEM) to answer the research hypothesis. Flexibility is very influential in increasing customer retention so to develop customer retention, it is necessary to increase flexibility, customer value, and customer trust. The novelty in this research lies in identifying the role and position of customer value and customer trust as mediation that affect customer retention.

• The Journal of Asian Finance, Economics and Business
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• 제7권7호
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• pp.73-84
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• 2020

Existing studies disagree over the core predictors of firm-level financial choices in developing countries. The general practice only validates the traditional capital structure model, which leads to inconsistency and a lack of novelty. This study removed overfitting issues among existing factors and presented the most reliable and advanced capital structure model in Pakistani firms. The panel data include 368 Pakistani companies from 19 non-financial sectors over the period 2004 to 2017. We apply Akaike and Bayesian Information Criteria to remove overfitting issues among inconsistent proxies in the capital structure model. The fixed effects regression is used for basic results and the Generalized Method of Moments is applied to control the endogeneity. Besides the conventional proxies, we report that credit rating, distance from bankruptcy, managerial concentration, and institutional quality are the most advanced capital structure determinants in Pakistan. These predictors remain significant across firm size and growth levels. Also, the findings confirm that new predictors are reliable to define capital structure dynamics and improve the speed of adjustment in overall and sub-sample analysis. The major findings suggest that managers and policymakers should consider these advanced predictors to design their financial settings in firms.

• Advances in nano research
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• 제10권2호
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• pp.175-189
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• 2021

In this article, frequency characteristics, and sensitivity analysis of a size-dependent laminated composite cylindrical nanoshell under bi-directional thermal loading using Nonlocal Strain-stress Gradient Theory (NSGT) are presented. The governing equations of the laminated composite cylindrical nanoshell in thermal environment are developed using Hamilton's principle. The thermodynamic equations of the laminated cylindrical nanoshell are obtained using First-order Shear Deformation Theory (FSDT) and Fourier-expansion based Generalized Differential Quadrature element Method (FGDQM) is implemented to solve these equations and obtain natural frequency and critical temperature of the presented model. The novelty of the current study is to consider the effects of bi-directional temperature loading and sensitivity parameter on the critical temperature and frequency characteristics of the laminated composite nanostructure. Apart from semi-numerical solution, a finite element model was presented using the finite element package to simulate the response of the laminated cylindrical shell. The results created from finite element simulation illustrates a close agreement with the semi-numerical method results. Finally, the influences of temperature difference, ply angle, length scale and nonlocal parameters on the critical temperature, sensitivity, and frequency of the laminated composite nanostructure are investigated, in details.