• 정보처리학회논문지D
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• 제16D권2호
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• pp.281-294
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• 2009

본 연구는 TAM(Technology Acceptance Model)를 이용하여 모바일 영상통화서비스의 지속적인 사용에 영향을 미치는 요인들을 분석하였다. SPSS 12.0을 이용한 데이터 분석 결과는 인지된 유용성, 인지된 사용용이성, 영상통화 품질, 집중, 주변인의 영상통화 이용정도가 지속적인 모바일 영상통화서비스 이용에 유의한 영향을 미치는 것으로 나타났다. 그러나 조절효과로서 주변인의 영상전화기 보유와 이용 정도, 요금, 품질, 프라이버시와 지속적 이용간의 관계는 모두 유의하지 않는 것으로 나타났다.

• The Journal of Asian Finance, Economics and Business
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• 제8권7호
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• pp.235-244
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• 2021

This study aims to determine the behavior of consumer interest in sustainable fashion products in Indonesia and the factors that influence it. Personal values, Green Trust, and attitude toward green products are studied to get a proper picture of the ethical behavior of consumers. The method used is the Structural Equation Model (SEM) technique using AMOS 23 software. A sample of 103 participants used the convenience sampling technique. The study results show that green trust and attitude toward green products successfully mediate personal value and green purchase intention on ethical fashion products in Indonesia. In this study, it was found that personal values cannot directly influence the purchase intention of sustainable fashion products. The influence of Personal Value must first be mediated by green trust or attitude toward green products to further influence green purchase intention of ethical fashion products in Indonesia. This is not in line with previous studies. Indicators of personal values such as self-transcendence, self-enhancement, conservation, and openness directly cannot predict the behavior of purchase intentions for sustainable fashion products in Indonesia. From the descriptive conclusion of the data obtained, there are various types of meanings of individual values, and fashion consumers in Indonesia are more affected by contextual factors.

• The Journal of Asian Finance, Economics and Business
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• 제9권9호
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• pp.93-104
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• 2022

This study aims to investigate the factors that contribute to the sustainable development of 334 Vietnamese construction and real estate companies listed on the Stock Exchange of Vietnam over a 5-year period from 2016 to 2020. By using regression analysis with the support of STATA software through examining the financial statements, which involves looking into crucial ratios including capital structure, profitability, firm size, accounts receivable management, and tangible assets investment, this study sheds light on whether these accounting indicators could help predict the construction and real estate companies growing potential in the future. Nevertheless, these ratios slightly contribute to the explanation of the change in revenue growth ratio, with a result of 1.6%, indicating that the value relevance of accounting information provides a modest and insignificant effect on investment decisions. This is understandable because the Vietnamese construction and real estate market still has many shortcomings in handling unexpected events, as well as the industry's peculiarities related to major capital sources from bank loans. Based on this study, governmental authorities and business executives should plan appropriate risk management policies and measures to contribute to the sustainable development of construction and real estate companies.

• Steel and Composite Structures
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• 제49권1호
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• pp.47-64
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• 2023

Due to their efficient use of materials, hybrid reinforced concrete-steel (RCS) systems provide more practical and economic advantages than traditional steel and concrete moment frames. This study evaluated the seismic design factors and response modification factor 'R' of RCS composite moment frames composed of reinforced concrete (RC) columns and steel (S) beams. The current International Building Code (IBC) and ASCE/SEI 7-05 classify RCS systems as special moment frames and provide an R factor of 8 for these systems. In this study, seismic design parameters were initially quantified for this structural system using an R factor of 8 based on the global methodology provided in FEMA P695. For analyses, multi-story (3, 5, 10, and 15) and multi-span (3 and 5) archetypes were used to conduct nonlinear static pushover analysis and incremental dynamic analysis (IDA) under near-field and far-field ground motions. The analyses were performed using the OpenSees software. The procedure was reiterated with a larger R factor of 9. Results of the performance evaluation of the investigated archetypes demonstrated that an R factor of 9 achieved the safety margin against collapse outlined by FEMA P695 and can be used for the design of RCS systems.

• 환경영향평가
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• 제14권1호
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• pp.1-15
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• 2005

This study aims to analyze the objectives of environmental education in Environmental Impact Assessment (EIA) and the Education for Sustainable Development(ESD) factors used EIA in 'ecology and environment' textbook, and finally to analyze the situation and contents level of EIA domain in textbook to explore the possibility of the positive availability of EIA domain in high school for realization of effective ESD. To analyze the objectives of environmental education in EIA and ESD factors used EIA, researchers used the text, the activity and the teaching tip in three kinds of 'ecology and environment' textbook by the 7th curricula as the object of analysis. Framework to analyze the objectives of environmental education in EIA is the category of environmental education objectives of UNESCO presented according to 'Tbilisi Intergovernmental Conference on Environmental Education' and framework to analyze ESD factors used EIA is developed on the basis of the theory about EIA and ESD factors updated in this study. In conclusion, it proves that the EIA domain through the activity is effective for realization of ESD. According to the analysis of the study, it is proposed that the follow-up studies on the improvement of EIA domain in textbook in both quality and quantity as well as 'the teaching & learning methods and various development of teaching materials, etc: based on the emphasis on the activity are needed to progress steadily for realization of effective ESD in high school in the future.

• 산업진흥연구
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• 제9권3호
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• pp.87-100
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• 2024

본 연구는 기업이 창업 후 죽음의 계곡을 극복하여 지속가능한 성장에 영향을 미치는 요인을 기술, 시장, 입지, 클러스터, INC모델 관점에서 접근하였으며, 대덕클러스터 내 기술기반 기업을 대상으로 성공·실패기업에 대한 사례연구를 진행하여 선행연구의 주요 요인과의 적정성 및 적합성을 탐색하였다. 본 연구 결과는 클러스터 내 기업의 성장을 위해서는 혁신 주체 간 입지 접근성 기반 협업이 중요하며, 기업의 제품·서비스가 시장에서 혁신 가치를 창출하기 위해서는 혁신적인 아이디어(Idea), 시장의 요구(Needs), 요구를 충족할 수 있는 역량(Capability) 등 균형적 성장이 필요함을 제시한다. 대덕클러스터 내 기업 대상 성공·실패 사례분석으로 지속 가능한 기업 성장을 위한 요인을 제시했다는 점에서 연구의 가치가 있다. 그리고 클러스터 내 기업육성을 위해 기업 간 협업 기반 정책적 지원 방안을 제시했다는 점에서 연구의 성과가 있다.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2009년도 추계학술대회 논문집
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• pp.394-394
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• 2009

Water solubility of conjugated polymers may offer many applications. Potential applications of water-soluble conjugated polymers include the polymer light-emitting diode and new materials for nano and micro hollow-capsules, and bio- or chemo-sensors. We synthesized neutral polyfluorenes containing bromo-alkyl groups by the palladium catalyzed Suzuki coupling reaction. Bromo-alkyl side groups in neutral polyfluorenes were quaternized by tri-methyl amine solution. The electrochemical and optical properties of water-soluble conjugated polymers are discussed. This novel synthesized water-soluble conjugated polymers were used as a interfacial dipole layer between active layer and metal cathode in polymer solar cell for enhancement of open-circuit voltage (Voc), which is one of the most critical factors in determining device characteristics. We also investigated the device performance of polymer solar cell with different metal cathode such as Al, Ag, Au and Cu. In polymer solar cell, novel cationic water-soluble conjugated polymers were inserted between active layer and high-work function cathode (Al, Ag, Au and Cu).

• 근관절건강학회지
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• 제31권1호
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• pp.53-63
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• 2024

Purpose: This study aimed to determine the prevalence of dizziness in adults and to identify factors associated with dizziness. Methods: This cross-sectional study used secondary data from the Eighth Korea National Health and Nutrition Examination Survey. Participants included 10,265 older adults aged≥40 years. Data were analyzed using descriptive statistics, the chi-squared test, and multinomial logistic regression with the SPSS/WIN 27.0 program. Results: The prevalence of dizziness was 26.2%, with 20.9% reporting episodic dizziness and 5.3% reporting chronic dizziness. Compared to that noted in the control group participants without dizziness, the risk of episodic or chronic dizziness was higher in women and in participants with older age, low education level, low income level, high perceived stress level, depression, tinnitus, and occupational noise exposure. Moreover, the risk of chronic dizziness was higher among those with a body mass index of <25 kg/m², stroke, cardiovascular disease, or severe hearing loss. Conclusion: The study underscores the need to comprehensively identify risk factors associated with dizziness and to develop interventions to prevent and manage the occurrence and chronicity of dizziness in the general population.

• 교육녹색환경연구
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• 제9권3호
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• pp.12-19
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• 2010

School design in the future will be more important on exterior space plan. However, there is no specific definition or boundary regarding exterior space, and related regulations and guides define the essential factors only. The purpose of this study is to have a guideline for the concept of exterior space in elementary school buildings, and deducted strong and weak points by evaluating exterior space based on each business methods. A result of this study can be suggest what improvements should be made on exterior space design of elementary school buildings by comparative analysis of positive and weak points for each evaluation factors.

• 국제지역연구
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• 제21권4호
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• pp.271-294
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• 2017

Despite a huge amount of foreign assistance and close economic guidance by international donors throughout the past decades, Zambia today still suffer from a high level of aid dependency and the absence of sustainable economic development. In this study, I investigate the factors that resulted in aid (and development) failure in Zambia, focusing on institutional/historical contexts. I propose that in Zambia, government has largely failed to implement (or even produce) effective economic policies that could lead to successful use of foreign assistance for long-term, sustainable development. In particular, I focus on the nature of state and politics in Zambia, and argue that failed politics is one of the main causes of development and aid failure in Zambia and highlight colonial legacies and other contextual/institutional factors to understand the nature of politics and state in Zambia. In particular, this paper proposes that the Zambian case demonstrates that foreign aid and donor influence could worsen the situation directly by simply providing wrong guidance and also by further weakening the state (and institutional) capacity of the recipient country.