• 제목/요약/키워드: Technology Economic Life

검색결과 718건 처리시간 0.026초

Energy Efficiency of Fluidized Bed Drying for Wood Particles

  • Park, Yonggun;Chang, Yoon-Seong;Park, Jun-Ho;Yang, Sang-Yun;Chung, Hyunwoo;Jang, Soo-Kyeong;Choi, In-Gyu;Yeo, Hwanmyeong
    • Journal of the Korean Wood Science and Technology
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    • 제44권6호
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    • pp.821-827
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    • 2016
  • This study evaluates the economic feasibility of industrializing fluidized bed dryer for wood particles. The theoretically required heat energy and energy efficiency were evaluated using a pilot scale fluidized bed dryer. When Mongolian Oak wood particles with 50% initial moisture content were dried in the fluidized bed dryer with air of $70^{\circ}C$ air circulating at 1.1-1.3 m/s for 30 minutes, the total theoretically required heat energy was 2,177 kJ. Of this, 1,763 kJ (approximately 81.0%) was used to heat the air flowing in from outside the dryer and 386 kJ (approximately 17.7%) was used to heat and remove water from the wood particles. Actual energy consumed was 7,560 kJ, giving energy efficiency of 28.8%. Thus, to industrialize a drying method such as fluidized bed drying, where the dryer volume is significantly larger than the volume of wood particles, it is necessary to minimize energy loss and maximize energy efficiency by designing the dryer size considering the amount of wood particles and choosing a suitable air circulation rate.

노인의 인적자본이 생활만족도에 미치는 영향 (The Effect of Human Capital on Life Satisfaction of the Elderly)

  • 임안나
    • 문화기술의 융합
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    • 제8권5호
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    • pp.193-199
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    • 2022
  • 본 연구는 노인의 인적자본이 생활만족도에 미치는 영향을 파악하고자 하였다. 연구대상자는 국민노후보장패널조사 8차 부가조사 자료를 활용하였으며 대상자는 1,987명이었다. SPSS 20.0을 이용하여 기술통계, t-test, ANOVA, 회귀분석을 실시하였다. 그 결과, 성별, 연령, 교육수준, 경제활동 상태, 세대구성 형태, 배우자유무, 운동 형태가 생활만족도에 유의한 차이를 보였다. 생활만족도와 건강상태는 가장 높은 정(+)의 상관관계를 나타냈고, 월평균소득과 교육수준은 가장 높은 부(-)의 상관관계를 나타냈다. 생활만족도에 유의한 영향을 미치는 인적자본으로는 남성보다는 여성이, 비취업자보다는 취업자가, 부부세대의 가족형태인 경우에, 건강할수록, 월평균 소득이 높을수록, 규칙적인 운동을 할수록 생활만족도가 상대적으로 높았다.

지역사회 거주 노인의 임종기 치료, 연명치료, 사전의료의향서에 대한 지식 (Knowledge regarding Advance Directives among Community-dwelling Elderly)

  • 홍선우;김신미
    • 한국간호교육학회지
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    • 제19권3호
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    • pp.330-340
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    • 2013
  • Purpose: This study was performed to identify the level of Korean elderly's knowledge regarding concepts of end-of-life (EOL), Life-sustaining-treatment (LST), and advance directives (AD) which are critical aspects for establishing AD in Korean society. Methods: A questionnaire survey was done between October 2011 and February 2012. Knowledge of AD was evaluated with 3 aspects including EOL, LST, and AD utilizing a questionnaire that was developed by authors for the study. Data were collected from 268 community dwelling elderly from three cities and analyzed using descriptive statistics, t-tests, one-way analysis of variance, and a Scheffe post hoc test with SAS Ver. 9.1 program. Results: Overall, Korean elderly were poorly acquainted with AD related concepts. Significant differences in awareness of AD including understanding of EOL, the level of comprehension of LST, and knowledge about AD were revealed by gender, education level, economic state, and acquaintance with terms of AD or LST. Conclusion: To acknowledge autonomy and support quality of life for elderly and to meet the purpose of AD, attention should be given to target populations including elderly in terms of knowledge level related to AD, social marketing, and infra structure relevant to practice AD in our society.

해양 생물 모티브를 응용한 크루즈 룩 디자인 (Cruise Look Design Inspired by the Ocean Life Motif)

  • 제갈미;이연희
    • 복식문화연구
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    • 제16권4호
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    • pp.634-645
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    • 2008
  • The purpose of this study was to develop cruise look design inspired by the ocean life motif using by computer CAD system. Domestic and international brands were selected for this study researching cruise line collection. A variety of literature and online site for concept of cruise look and sustainable design was studied. Adobe Illustrator CS2 and Adobe Photoshop CS2 program were used for cruise look design through analysis of 07/08 S/S trend. The diffusion of cruise look reflects a societal trend to be changed life pattern. The results of this study are as below. First, as this society has become modernized with advancement of technology, people have been increasingly interested in the pursuit of happiness and the concept of 'quality of life', thereby creating a new trend of consumption culture. As a result, fashion market place changed targeting sensible and self-enrichment customers. Second, as combining rapid technological innovation and mass production, industrial design caused environmental pollution and the problems are being worsen. Fashion design has same problems and led to eco-friendly design by the large. Third, as the change of style influenced by economic and social condition, cruise look re-defined and became more common. The change of various fields led to fashion market place should be changed. The cruise look design using computer program will give more benefits to many designers.

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Prospects of Consumer Life Information

  • Koo, In-Sook
    • 패션비즈니스
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    • 제7권6호
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    • pp.21-31
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    • 2003
  • The CLI(Consumer Life Information) is a new study to unite and create new values recognizing the importance of knowledge and information in information-oriented society based on domestic science and digital technology. The objective of this research is to define academic identity of consuming science and CLI, to analyze the theory, styles, manners, psychology and the concept of consumption, which is the base of consuming life, and to present the direction of CLI with tasks and three major axises of CLI. Nowadays, international order demands new paradigms from human beings. Especially, vision and creation of the values are settled as methodological ways considering the economic power. The CLI should be on the same horizon adjusting social change of pointing values and quality in consuming patterns of diversity and variety. Therefore, I would suggest the ways for the CLI to head for as follows. First, it is to perceive the 3 major Axises & Task of CLI. Second, it is to develope service (experiencing goods) and goods that can lead consuming lives. Third, it is to study merchandising strategy, to create new signs and symbols of goods, and to collaborate of R & D(reseach and developement) and Business. Fourth, it is to head for globalization. Consequantly, this study will be helpful to establish the theory of relationship between producer and consumer in fashion business included research and developments of qualitative goods.

기술적 성능향상 및 경제성을 고려한 기술 확산(Technology Diffusion) 추세에 대한 연구 : 32nm, 22nm, 14nm 로직 반도체의 기술진화 사례 (A study on technology diffusion trend considering technological performance enhancement and economics : case of technology evolution of 32nm, 22nm, 14nm logic semiconductors)

  • 박창현
    • 한국산학기술학회논문지
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    • 제18권2호
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    • pp.177-184
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    • 2017
  • 기술의 확산 현상의 추세 및 발생 동인에 대한 정확한 이해는 새로운 기술을 예측하고 기술 혁신의 과정을 이해하는데 매우 유용하다. 본 연구에서는 기술의 진화 속도가 빠른 반도체 산업 32nm, 22nm, 14nm 로직 기술의 실증적 사례에 대해 기술적 성능 향상 및 경제성 지표를 고려한 정량적 추세 분석을 적용하여 기술 확산 현상의 추세 및 발생 동인을 분석하였다. 기술적 성능 향상을 고려한 기술 확산 곡선은 S곡선의 성숙기, 쇠퇴기 형태를 보였고, 경제성 기반 기술 확산 곡선은 학습효과곡선의 형태를 보였다. 기술 확산 곡선은 2년의 수명주기를 보였고, 기술 세대별 기술적 성능향상 또는 칩 제조비용의 변화 정도가 정량적으로 관찰되었다. 또한 제품구조혁신은 경제적 발생동인보다 기술적 발생동인이 더 지배적인 영향을 미침을 확인할 수 있었다. 본 연구결과는 첨단기술기반의 반도체 산업에 대한 기술 확산 현상의 추세 및 발생 동인에 대한 실증연구로 시사점이 있으며, 기술 예측 또는 기술 전략 수립에 활용될 수 있으므로 실무적으로도 의의가 크다.

클라우드 컴퓨팅 환경에서 금형 수명주기관리 정보시스템 구축 및 적용의 실증적 연구 (An Empirical Study of Implementation and Application of Mold Life Cycle Management Information System In the Cloud Computing Environment)

  • 고준철;남승돈;강경식
    • 대한안전경영과학회지
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    • 제16권4호
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    • pp.331-341
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    • 2014
  • Internet of Thing(IoT), which is recently talked about with the development of information and communication technology, provides big data to all nodes such as companies and homes, means of transportation etc. by connecting all things with all people through the integrated global network and connecting all actual aspects of economic and social life with Internet of Thing through sensor and software. Defining Internet of Thing, it plays the role of a connector of providing various information required for the decision-making of companies in the cloud computing environment for the Insight usage by collecting and storing Raw Data of the production site through the sensor network and extracting big data in which data is accumulated and Insight through this. In addition, as the industry showing the largest linkage with other root industries among root industries, the mold industry is the core technology for controlling the quality and performance of the final product and realizing the commercialization of new industry such as new growth power industry etc. Recently, awareness on the mold industry is changing from the structure of being labor-intensive, relying on the experience of production workers and repeating modification without the concept of cost to technology-intensive, digitization, high intellectualization due to technology combination according to IT convergence. This study, therefore, is to provide a golden opportunity to increase the direct and indirect expected effects in poor management activities of small businesses by actually implementing and managing the entire process of mold life cycle to information system from mold planning to mass production and preservation by building SME(small and medium-sized enterprises)-type mold life cycle management information system in the cloud computing environment and applying it to the production site.

공동주택 철근콘크리트 공사의 하자담보책임기간 개정 이력 분석 (Analysis on Regulation Revision Record to Term of Warranty Liability to Reinforced Concrete Work in Apartment Building)

  • 박준모;서덕석
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2017년도 춘계 학술논문 발표대회
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    • pp.268-269
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    • 2017
  • Apartment building, which has been accompanied by economic growth in Korea, is a home of life and has the value overlapping as housing and assets. The improvement of consumer's eye level and development of related technology and related service development have positive function that enriches society and creates economic wealth. On the other hand, the clash and conflict between stakeholders increase social unrest and waste our competitiveness by economic loss. The term of warranty liability of apartment building is an important issue of defect lawsuits and is only a few quantitative standards. However, in this study, we examined the revision history of the law and ordinances for the reinforced concrete construction. As a result, establishing and revising the relevant standard, there is no definite basis system to support it. To improve this, the efforts to provide the standard for term of warranty liability and quantitative and objective basis to support it should be accompanied continuously.

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ARIMA Based Wind Speed Modeling for Wind Farm Reliability Analysis and Cost Estimation

  • Rajeevan, A.K.;Shouri, P.V;Nair, Usha
    • Journal of Electrical Engineering and Technology
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    • 제11권4호
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    • pp.869-877
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    • 2016
  • Necessity has compelled man to improve upon the art of tapping wind energy for power generation; an apt reliever of strain exerted on the non-renewable fossil fuel. The power generation in a Wind Farm (WF) depends on site and wind velocity which varies with time and season which in turn determine wind power modeling. It implies, the development of an accurate wind speed model to predict wind power fluctuations at a particular site is significant. In this paper, Box-Jenkins ARIMA (Auto Regressive Integrated Moving Average) time series model for wind speed is developed for a 99MW wind farm in the southern region of India. Because of the uncertainty in wind power developed, the economic viability and reliability of power generation is significant. Life Cycle Costing (LCC) method is used to determine the economic viability of WF generated power. Reliability models of WF are developed with the help of load curve of the utility grid and Capacity Outage Probability Table (COPT). ARIMA wind speed model is used for developing COPT. The values of annual reliability indices and variations of risk index of the WF with system peak load are calculated. Such reliability models of large WF can be used in generation system planning.

4차 산업 기술 기반의 예술 콘텐츠 연구 -인공지능 회화와 NFT 미술을 중심으로- (Research on art contents based on 4th industrial technology -Focusing on artificial intelligence painting and NFT art-)

  • 방진원
    • 문화기술의 융합
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    • 제10권4호
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    • pp.613-625
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    • 2024
  • 본 연구는 4차 산업기술의 혁신적인 기술인 디지털 기술을 기반으로 생성되는 예술 콘텐츠인 AI 회화와 NFT 미술의 융복합 사례를 분석하고 그 특성에 대해 탐구하였다. 21세기 삶의 패러다임을 혁신하는 디지털 기술은 창의적인 예술에서 활용되고 있고, 이를 표현 도구로 활용하는 AI 회화와 NFT 미술은 예술에 대한 인식과 수용 방식을 변화시키고 있다. 빅 데이터와 인공지능 기술을 활용하는 AI 회화는 대화형 일상 예술로 진화하고 있으며, 블록체인과 NFT 기술을 이용하는 NFT 미술은 경제적 가치와 문화적 가치를 지닌 메타버스의 예술이 되고 있다. 이에 본 연구는 이러한 디지털 융합 예술의 다양한 양상과 가치를 탐구하고자 하였다. 연구를 위해 AI 회화와 NFT 미술의 대표적 사례를 인지 창의적 AI 회화와 언어 생성적 AI, 예술 경제적 NFT와 예술 문화적 NFT로 분류하여 각각의 특성과 내용, 의미 등을 분석하였다. 본 연구의 결과가 디지털 융합 예술인 AI 회화와 NFT 미술 발전에 기여할 수 있기를 기대한다.