• Title/Summary/Keyword: self-sustaining

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Exploration of emerging technologies based on patent analysis in complex product systems for catch-up: the case of gas turbine (복합제품시스템 추격을 위한 특허 기반 부상기술 탐색: 가스터빈 사례를 중심으로)

  • Kwak, Kiho;Park, Joohyoung
    • Knowledge Management Research
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    • v.17 no.2
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    • pp.27-50
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    • 2016
  • Korean manufacturing industry have recently faced the catch-up of China in the mass commodity product, such as automotive, display, and smart phone in terms of market as well as technology. Accordingly, discussion on the importance of achieving catch-up in complex product systems (CoPS) has been increasing as a new innovation engine for the industry. In order to achieve successful catch-up of CoPS, we explored emerging technologies of CoPS, which are featured by the characteristics of radical novelty, relatively fast growth and self-sustaining, through the study of emerging technologies of gas turbine for power generation. We found that emerging technologies of the gas turbine are technologies for combustion nozzle and composition of electrical machine for increasing power efficiency, washing technology for particulate matter, cast and material processing technology for enhancing durability from fatigue, cooling technologies from extremely high temperature, interconnection operation technology between renewable energy and the gas turbine for flexibility in power generation, and big data technology for remote monitoring and diagnosis of the gas turbine. We also found that those emerging technologies resulted in technological progress of the gas turbine by converging with other conventional technologies in the gas turbine. It indicates that emerging technologies in CoPS can be appeared on various technological knowledge fields and have complementary relationship with conventional technologies for technology progress of CoPS. It also implies that latecomers need to pursue integrated learning that includes emerging technologies as well as conventional technologies rather than independent learning related to emerging technologies for successful catch-up of CoPS. Our findings provide an important initial theoretical ground for investigating the emerging technologies and their characteristics in CoPS as well as recognizing knowledge management strategy for successful catch-up of latecomers. Our findings also contribute to the policy development of the CoPS from the perspective of innovation strategy and knowledge management.

Category Grammar and Gender Ideology of the Su-Hyeon Kim's Melodrama Focused on (김수현 멜로드라마의 장르문법과 성 이데올로기 <내 남자의 여자>를 중심으로)

  • Yoo, Jin-Hee
    • The Journal of the Korea Contents Association
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    • v.9 no.11
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    • pp.175-183
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    • 2009
  • This study is the full-scale research of a TV drama writer, who has been out of scholarly pursuits, examining the differentiality and tendency of the most popular TV drama writer, Su-Hyeon Kim. By focusing on her recent melodrama , this study shows that the writer used her own category grammar, 'pursuit of psychology' and 'reversal of dichotomy', which led her to convey the drama's message of the 'self-reflection' on love successfully. This analysis would be the good result of overcoming all the raised melodrama's negative elements in Koran TV such as conventionality, dichotomy, unreality, and excessive emotion. Also this paper presents that the writer showed an advanced tendency on the gender ideology, overthrowing the existing patriarchal gender ideology. This study proposes the further research to analyze what sort of influence is the writer's own category grammar. Also this study proposes the following research on that the writer's advanced tendency in melodrama could applicate the other genre drama of her's, stressing the necessity of sustaining research work on TV drama writer.

The Daily Life Experiences of Community Dwelling People with Mental Disabilities (재가 정신장애인의 일상생활경험)

  • Jun, Won Hee;Choi, Eun Joung;Cho, Hyun Mee
    • Research in Community and Public Health Nursing
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    • v.31 no.3
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    • pp.244-255
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    • 2020
  • Purpose: As the daily life experiences of community-dwelling people with mental disabilities are closely correlated to mental health recovery, this study aimed to analyze their daily life experiences in depth to determine their significance. Method: Participants included eight community-dwelling people with mental disabilities. A total of 12 in-depth interviews were conducted once or twice per participant. The collected data were analyzed using the phenomenological analysis method described by Giorgi. Results: The daily life experiences of community-dwelling people with mental disabilities were categorized into the following four components: "encountering shocking reality in the outside world", "life tied down by the mental illness", "happiness and gratefulness encountered in daily life", and "wishing for a change and self-sustaining life". Conclusion: This study found that the recovery and welfare of community-dwelling people with mental disabilities were promoted and that these patients made necessary efforts to become a member of the local community. These findings could be used as a reference for establishing social welfare policies which enable people with mental disabilities to participate as functioning members of the community that facilitate the prevention of relapse, to promote their integration into the community. Furthermore, the present results will contribute to the development of nursing intervention programs to promote recovery and prevent relapse, to ultimately establish a mental health management system.

A Descriptive Research on Field Situation of Customized Modification for Vulnerable Single Elderly Home (사회취약 독거노인 주택의 맞춤형 개조 현장상황 기술 연구)

  • Lee, Yeun-Sook;Kim, Yun-Soo;Sung, Cho-Hee;Shin, Yoo-Jin;Cho, Won-Seob
    • Journal of the Korean housing association
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    • v.28 no.3
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    • pp.55-64
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    • 2017
  • Elderly population has increased rapidly and adjusting the environment is in demand to support their health. To improve the living environment of elderly, an appropriate plan for customized home modification is needed upon the personal contexts. The purpose of this study is to explain the sequence and to build an insight on customized home modification for vulnerable single elderly. It is a case study based on single target that includes 6 months of execution period deeply seeking the appropriate plan for implementation. The target is a male elderly aged 74 living in a single story detached house. The various research methods are applied in this study including exploratory, participatory, action and trade-off preference researches. The result shows that plan for home modification is complex outcome of interlocking uniqueness between residence environment and resident situation. If customized modification is targeted for residentially vulnerable social group, more sensitive approach aiming for the highest result is required due to financial constraint. To conclude, comprehensive understanding of overall circumstances of a dwelling, a resident and various stakeholder is essential throughout the process. Since the aging-in-place of elderly cannot be achieved without self-sustaining living environment, customized home modification should be a tool to meet housing suitability. It is important to strengthen the experts and future workforce with networks of local residents to share opinions and appropriate plans.

A Study on the general population's attitude and related factor on the continuity of medical care (의료 지속성에 대한 일반인들의 태도 및 관련요인 - 사무직 직원들을 대상으로 -)

  • Jo, Heui-Sug;Jeong, Heon-Jae;Lee, Sun-Hee
    • Korea Journal of Hospital Management
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    • v.9 no.3
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    • pp.1-17
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    • 2004
  • This study is aimed to assess the general population's attitude toward the continuity of medical care and its related factors. Self administered questionnaire was performed on the 1,120 office workers in the C city, Gang-won province. The questionnaire included the attitude of the continuity of medical institute, the intention of medical service use on a given case, and the variables of the related factors. 58.8% of the total respondents agreed to sustaining treatment without changing medical institutes; on the other hand, 41.2% showed negative attitude. In case that a patient would gain a recommendation of a surgery, hospitalization, or a specific examination, the total respondents' 84.9%, 61.8%, and 50.8% of each recommended situation said that they would visit another doctor and gain a diagnosis. As a result of multiple logistic analysis of determinant factor on continuity, reliability of doctors was statistically significant factor. In order to reduce wastefully used medical resources and offer well-qualified medical service, a system of second opinion among peer group or beforehand agreement could be possibly adopted. In addition, improving the image and reliability of a doctor could be an important factor to make better the behavior of medical service shopping; therefore, an effort to improve the relationship between a doctor and a patient, and restore the reliability of doctors should be paralleled.

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A Case Study and Product Planning Characteristics of Global Eco-fashion Brands (글로벌 에코패션 브랜드의 현황과 상품기획 특성)

  • Ha, Seung-Yeon
    • Journal of the Korea Fashion and Costume Design Association
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    • v.16 no.3
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    • pp.219-238
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    • 2014
  • This study attempted to investigate present condition and product planning of global eco-fashion brands that harmonize fashion and sustainability. As research subjects, this study selected 97 oversea fashion brands mentioned in books related to eco-fashion, Black(2011), Brown(2010), Fuad-luke(2009). As for research methods, materials and ethical practices of these selected 97 brands through literature data and their internet site homepages. This study analyzed oversea eco-brands collected 26 British brands, 22 American brands, 36 European brands such as Germany, France, Italy, Sweden, Spain, Finland and so on, except Britain and 13 other regions including Japan, India, Canada, Mexico, and New zealand. In conclusion, the product planning characteristics of these oversea eco-fashion brands can be summarized as follows; community and fair trade, ecological and slow design, recycle, reuse, redesign, and new eco-models. Firstly, brands of 'community and fair trade' manufactured products through fair trade and local community's artisan by ethical practices with organic fabrics. Secondly, brands of 'ecological and slow design' pursued timeless design and multi-functional design as luxury eco-fashion styles. They used organic textiles, hemp, bamboo, soya, tencell, sea cell, and self-sustaining plants. Thirdly, brands of 'recycle, reuse, redesign' aimed for upcycling high-end fashion and used vintage clothes, textile scraps, PET, parachutes, tires, safety belts, advertising banner and so on. In addition, brands of 'new models as eco-fashion' suggested zero-waste cutting, recycling over-printing technology, new sustainable business model, and ethical practices in the supply chain of the fashion industry.

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Milk Production of Dairy Cattle from Organic Farming in Germany and Development Trends in Korea (독일의 유기축산에 의한 젖소사육 현황과 무리나라의 발전 방향)

  • 류종원
    • Journal of Animal Environmental Science
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    • v.8 no.1
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    • pp.25-34
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    • 2002
  • In view of increasing environmental pollution, the organic farming in animal production is becoming increasingly urgent. The problems of veterinary medicine have not diminished through the most dangerous epidemic diseases. Organic farming attempts to function in harmony with the environment. The first criterion of the organic farm is that the animal must be self-sustaining. Their food must be produced to a large extent on the farm. The position of ruminants in biological systems is determined by the fact that this group of farm animals is provided with a digestive system which optimizes the utilization of the products of gut microfloral fermentation. The cattle do not require large amounts of concentrate feeling nor gross ugly farm building for intensive rearing. The economic profitability of a cow depends. on the first instance, on the level of milk production and the number of lactations. The length of life is an important factor since the tilde to maturing is relatively high in a cow. The result is that dairy cows in organic farming have greater length of live, and produce more milk in their life time than the shorter lived high input cow. This paper. therefore, discussed the problems of modern cattle farming and development trends of organic farming in Germany and Korea.

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Factors to be considered in designing a faculty development program for medical education: local experience from the Western region of Saudi Arabia

  • Algahtani, Hussein;Shirah, Bader;Alshawwa, Lana;Tekian, Ara;Norcini, John
    • Journal of Yeungnam Medical Science
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    • v.37 no.3
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    • pp.210-216
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    • 2020
  • Background: Among the different aims of medical education, the provision of society with skilled, professional, and knowledgeable healthcare workers who maintain and develop their expertise over a lifetime career is important. The achievement of this goal is linked with the professional development of both faculty members and healthcare workers. This study aims to measure the perception of faculty members regarding their views about the goals of faculty development programs, practices and activities, and factors that determine their achievement. Methods: A cross-sectional survey was conducted in multiple universities in the Western region of Saudi Arabia. The participants were given a pre-designed self-administered questionnaire generated from literature. The survey questionnaire consisted of three sections that were designed to assess the faculty members' perception on the faculty development program. Results: A total of 210 faculty members participated in the study. The most important perceived goal was to motivate teachers to become better teachers. The most important perceived practice was establishing a positive climate for teaching and learning. The most important perceived factor was skilled and dedicated staff support. Conclusion: The results of this study demonstrate that faculty members have positive perceptions regarding all aspects of faculty development programs. This study will raise awareness regarding the importance of faculty development programs in sustaining educational vitality. We recommend the implementation and maintenance of comprehensive faculty development programs in Saudi universities.

Design of Low Noise Airfoil for Use on Small Wind Turbines (소형 풍력발전기 소음 저감을 위한 익형 설계 연구)

  • Kim, Tae-Hyung;Lee, Seung-Min;Kim, Ho-Geon;Lee, Soo-Gab
    • 한국신재생에너지학회:학술대회논문집
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    • 2009.11a
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    • pp.465-465
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    • 2009
  • Wind power is one of the most reliable renewable energy sources and the installed wind turbine capacities are increasing radically every year. Although wind power has been favored by the public in general, the problem with the impact of wind turbine noise on people living in the vicinity of the turbines has been increased. Low noise wind turbine design is becoming more important as noise is spreading more adverse effect of wind turbine to public. This paper demonstrates the design of 10 kW class wind turbines, each of three blades, a rotor diameter 6.4m, a rated rotating speed 200 rpm and a rated wind speed 10 m/s. The optimized airfoil is dedicated for the 75% spanwise position because the dominant source of a wind turbine blade has been known as trailing edge noise from the outer 25% of the blade. Numerical computations are performed for incompressible flow and for Mach number at 0.145 and for Reynolds numbers at $1.02{\times}10^6$ with a lift performance, which is resistant to surface contamination and turbulence intensity. The objective in the low design process is to reduce noise emission, while sustaining high aerodynamic efficiency. Dominant broadband noise sources are predicted by semi-empirical formulas composed of the groundwork by Brooks et al. and Lowson associated with typical wind turbine operation conditions. During the airfoil redesign process, the aerodynamic performance is analyzed to minimize the wind turbine power loss. The results obtained from the design process show that the design method is capable of designing airfoils with reduced noise using a commercial 10 kW class wind turbine blade airfoil as a basis. The new optimized airfoil clearly indicates reduction of total SPL about 3 dB and higher aerodynamic performance.

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Size Tailored Nanoparticles of ZrN Prepared by Single-Step Exothermic Chemical Route

  • Lee, Sang-Ki;Park, Kyung-Tae;Ryu, Hong-Youl;Nersisyan, Hayk H.;Lee, Kap-Ho;Lee, Jong-Hyeon
    • Korean Journal of Materials Research
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    • v.22 no.5
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    • pp.243-248
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    • 2012
  • ZrN nanoparticles were prepared by an exothermic reduction of $ZrCl_4$ with $NaN_3$ in the presence of NaCl flux in a nitrogen atmosphere. Using a solid-state combustion approach, we have demonstrated that the zirconium nitride nanoparticles synthesis process can be completed in only several minutes compared with a few hours for previous synthesis approaches. The chemistry of the combustion process is not complex and is based on a metathesis reaction between $ZrCl_4$ and $NaN_3$. Because of the low melting and boiling points of the raw materials it was possible to synthesize the ZrN phase at low combustion temperatures. It was shown that the combustion temperature and the size of the particles can be readily controlled by tuning the concentration of the NaCl flux. The results show that an increase in the NaCl concentration (from 2 to 13 M) results in a temperature decrease from 1280 to $750^{\circ}C$. ZrN nanoparticles have a high surface area (50-70 $m^2/g$), narrow pore size distribution, and nano-particle size between 10 and 30 nm. The activation energy, which can be extracted from the experimental combustion temperature data, is: E = 20 kcal/mol. The method reported here is self-sustaining, rapid, and can be scaled up for a large scale production of a transition metal nitride nanoparticle system (TiN, TaN, HfN, etc.) with suitable halide salts and alkali metal azide.