• 기술혁신연구
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• 제13권2호
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• pp.97-131
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• 2005

This paper has discussed several issues regarding the barriers and opportunities for technological catch-up by the late-comer countries and firms. As one of the barriers to technological catch-up, the paper emphasizes the uncertainty involved with the third stage of learning how to design. The barriers arise because as the forerunner firms refuse to sell or give license to successful catching-up firms who thus have to design the product by themselves. The paper discusses how to overcome this barrier. It also notes that if the crisis of design technology is a push factor for leapfrogging, arrival of new techno-economic paradigm can serve as a pull factor for leapfrogging, serving as a winder of opportunity. The, it emphasized the two risks with leapfrogging, namely the risk of choosing right technology or standards and the risk of creating initial markets, and how to overcome these risks. It discusses how to overcome these risks in leapfrogging, and differentiates diverse forms of knowledge accesses. Then, the paper takes up the issue of whether there can be a single common or several models for catch-up. A common element of catching-up is to enter new markets segments quickly, to manufacture with high levels of engineering excellence, and to be first-to-market by means of the best integrative designs. This observation is supported by the fact that Korea and Taiwan has achieved higher levels of technological capabilities in such sectors as featured by short cycle time of technology. The possibility of two alternative models for catch-up is also discussed in terms of the key difference between Korean and Taiwan, especially in the position toward the source of foreign knowledge and the paths taken toward the final goal of OBM. Taiwan followed the sequential steps of OEM, ODM and OBN, in collaboration or integration with the MNCs. Korean chaebols jumped from OEM directly to OBM even without consolidating design technology.

• 한국농촌건축학회논문집
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• 제21권3호
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• pp.77-84
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• 2019

In this study, we classified and analyzed the type and cause of resident conflicts and made a solution at side of resident through resident survey study for research subjects located at photovoltaic system will be installed or not. The factors of resident conflicts based on news media release from 2006 to 2018 were classified to four types such as economic, environmental, technological and procedural factors. According to the news analysis, the types and proportion of resident conflicts in the photovoltaic system projects showed 33% of economic factors, 32% of environmental factor, 21% of technological factor and 14% of procedural factor. This news analysis may suggest that it is very important residents to share the economic benefits as well as to ensure the fairness of the procedures for carrying out the project based on transparent information disclosure during the business promotion and profit distribution stages. We conducted the poll survey in the rural towns where photovoltaic system will be installed or not. The poll survey results showed that (i) there is quite difference in agreement rate and other recognition for sensitive matters such as profit distribution, environmental and technological factors whether photovoltaic system will be installed or not, (ii) the resident conflict regarding the photovoltaic system installation can reduce through direct involvement of residents process. To solve these resident conflicts, the local governments should mainly effort and consider the supporting technologies and consults to solve clearly resident conflicts. In addition, it has to advertise the safety of photovoltaic systems regarding electromagnetic wave which were within the range of scientifically harmless to the human body.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2007년 가을학술발표회
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• pp.481-501
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• 2007

Excessive rainfalls due to climatic changes can trigger an increase in rainfall-induced slope failures that pose real threats to both lives and properties. Many high slopes in residual soils could stand at a steep angle, but failed during or after rainfall. Commonly, these slopes have a deep groundwater table and negative pore-water pressures in the unsaturated zone above the groundwater table contribute to the shear strength of soil and consequently to factor of safety of the slope. Stability assessment of slope under rainfall requires information on rate of rainwater infiltration in the unsaturated zone and the resulting changes in pore-water pressure and shear strength of soil. This paper describes the application of unsaturated soil mechanics principles and theories in the assessment of rainfall effect on stability of slope through proper characterization of soil properties, measurement of negative pore-water pressures, seepage and slope stability analyses involving unsaturated and saturated soils. Factors controlling the rate of changes in factor of safety during rainfall and a preventive method to minimize infiltration are highlighted in this paper.

• Wind and Structures
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• 제31권5호
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• pp.431-443
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• 2020

The modern tall buildings are often constructed as an unconventional plan and as twin buildings. Wind load on the tall building is significantly influenced by the presence of another building in the near vicinity. So, it is imperative to study wind forces on an unconventional plan shaped tall building. Mean wind pressure coefficients of a square and 'H' plan shape tall buildings are investigated using wind tunnel experiments. The experiments were carried out for various wind directions from 00 to 900 at an interval of 300 and various locations of the identical interfering building. The experimental results are presented at the windward face from the viewpoint of effects on cladding design. To quantify the interference effects, interference factors (I.F) are calculated. Mean pressure coefficients of both models are compared for isolated and interference conditions. The results show that pressure reduces with an increase in wind angle till 600 wind direction. The interfering building at full blockage interference condition generates more suction than the other two conditions. The interference factor for both models is less than unity. H-plan building model is subjected to a higher pressure than the square model.

• International journal of advanced smart convergence
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• 제11권2호
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• pp.171-184
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• 2022

The purpose of this paper is output oriented, in order to maximize the output level of sustainable development efficiency of foreign trade in western China with limited input. This paper adopts the relevant input-output indicators of sustainable foreign trade development of 11 provinces and cities in western China from 2016 to 2020, and uses DEA model to measure their technical efficiency, pure technical efficiency and scale efficiency. Malmquist index was used to calculate the total factor productivity change index of each province in western China from 2016 to 2020. We found that, on the whole, the average values of technical efficiency, pure technical efficiency and scale efficiency of provinces and cities in western China from 2016 to 2020 are greater than 0.8, indicating that the western region has high technical efficiency, relatively high management and institutional level and high existing scale level. Scale efficiency is lower than pure technical efficiency on the whole, indicating that the current sustainable development efficiency of foreign trade in western China is mainly limited by its scale level. The technological progress index is higher than the technological efficiency change index, indicating that the total factor productivity of the sustainable development of foreign trade in western China is mainly driven by technological progress and more influenced by external factors. We think the conclusion of this study can provide important reference information for the sustainable development of foreign trade of provinces and cities in western China.

• 산업경영시스템학회지
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• 제36권4호
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• pp.9-17
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• 2013

The purpose of this study is to figure out the impacts of technological innovation and cost management on productivity in small shipping industries to come up with developmental implications. To achieve this, a survey was carried out to 150 workers in small shipbuilding industries through April 2 to April 20, 2012. As for findings stated above, technological innovation and cost management in the Korean small shipbuilding industries were key factors that elevate financial and non-financial productivity. In the light of low technological prowess and cost structure of small shipbuilding industries, their productivity can be improved when intensive cost management with production factor technology as know-how is realized through quality management, which product development technology is the top priority as an independent niche strategy. Consequently, the combination of infrastructures in small shipbuilding industries with continuous efforts for cost reduction by the link to the systematized structure can't only secure their independent competitiveness, but raise their productivity.

• Advances in aircraft and spacecraft science
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• 제10권3호
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• pp.281-302
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• 2023

In this paper, bending analysis of exponentially varying functionally graded (FG) plate is presented using trigonometric shear deformation theory (TSDT) considering both transverse shear and normal deformation effects. The in-plane displacement field consists of sinusoidal functions in thickness direction to include transverse shear strains and transverse displacement include the effect of transverse normal strain using the cosine function in thickness coordinate. The governing equations and boundary conditions of the theory are derived using the virtual work principle. System of governing equations, for simply supported conditions, Navier's solution technique is used to obtain results. Plate material properties vary across thickness direction according to exponential distribution law. In the current theory, transverse shear stresses are distributed accurately through the plate thickness, hence obviates the need for a shear correction factor. TSDT results are compared with those from other theories to ensure the accuracy and effectiveness of the present theory. The current theory is in excellent agreement with the semi-analytical theory.

• 대한안전경영과학회지
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• 제10권1호
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• pp.67-73
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• 2008

National Education Information System (NEIS) is an ambitious reform project that can improve the competitiveness and performance of education field and to link administrational work of between schools and their senior administration offices via internet. NEIS is introduced to lighten the teachers' overburden, to standardize the work process and to bring better quality education to each classroom and make it possible for those involved in education to resolve any related educational problem on line. This paper aims to construct a hierarchy model consisting of key factors such as technological and administrative factors for the effective use of NEIS and to evaluate the relative importance among key factors using fuzzy AHP technique included fuzzy concepts. Eventually, the analysis results can be utilized to develop the future improvement strategy of NEIS and to satisfy the users.

• 벤처창업연구
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• 제13권1호
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• pp.73-87
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• 2018

창의성, 기업가정신, 기술혁신 지향성향 등은 기술혁신을 실현하기 위한 핵심적인 요인이다. 기업의 기술혁신을 주도하는 주체는 경영자이다. 햄브릭 교수의 고위층 이론(Upper Echelons Theory)에 따라 경영자 개인수준의 창의성이 조직의 기술혁신체계 내에 다양한 양상으로 투입될 것이고, 조직의 기술혁신체계가 경영자의 창의성에 긍정적인 영향을 받아 기업가지향성과 기술혁신지향성을 발현함으로써 혁신성과를 높일 것이다. 본 연구에서는 국내 반도체분야 기업 중 연구조직을 보유한 132개 기업의 경영자의 개인창의성이 연구조직의 기업가지향성, 기술혁신지향성을 매개로 기업의 혁신성과에 영향을 주는지 살펴보기 위하여 구조방정식으로 분석하였다. 이를 위해, 선행 연구 문헌에서 확인한 개인창의성, 기업가지향성, 기술혁신지향성 등을 측정 요소로 적용하였다. 구조방정식 분석 결과, 경영자의 개인 창의성이 연구조직의 기업가지향성과 기술혁신지향성을 매개로 할 때 기업의 혁신성과에 매우 유의미한 양(+)의 관계를 보였고, 경영자 창의성의 혁신성과와 직접적인 효과는 통계적으로 유의하지 않은 것으로 나타났다. 결국, 기술혁신을 주도하는 경영자의 개인창의성과 연구조직의 기업가 지향성과 기술혁신지향성은 기업의 성공적 혁신성과 창출을 위해 매우 중요한 요인임을 말해주고 있다.

• 재활복지
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• 제22권3호
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• pp.23-39
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• 2018

제4차 산업혁명과 기술혁신은 장애를 가진 사람들의 일자리 요인을 복잡하고 어렵게 만들 것이기 때문에 이 연구는 일자리 구조에 영향을 주는 기술요인을 분석하고 나아가 노동시장의 변화와 산업별 취업자의 추세변화를 통해 제4차 산업혁명에 대응하는 장애인 일자리 개발방안을 찾고자 하였다. 이를 위해 문헌연구와 FGI를 실시하였으며 연구 결과는 다음과 같다. 첫째, 제4차 산업혁명의 일자리 구조에 영향을 미치는 기술적 요인은 인공지능, 사물인터넷과 네트워킹, 3D프린팅, 빅데이터 구축이며, 둘째, 산업혁명으로 인한 기술혁신은 일자리 구조에 큰 영향요인이었으며 산업혁명과 기술혁신이 진전되면서 1, 2차 산업에서 3차 산업으로 일자리가 급격히 이동하였으나 장애인의 경우는 이러한 추세와는 다른 양상을 보였으며 특히, 2, 3차 산업에서 의미 있는 변화추세가 없으며 이 같은 원인은 장애인 구직자에 대한 기술혁신과 산업변화에 따른 역량개발 기회가 제한된 결과로 분석되며, 셋째, 제4차 산업혁명과 일자리 구조변화에 대한 장애인의 대응방안으로서는 (1)기술혁신에 대응하는 역량개발을 위한 선제적 투자가 필요하며 역량개발을 위한 교육방식은 분리교육이나 특수교육 보다는 통합적 교육과정 내에서 역량개발이 이루어질 수 있도록 교육과정과 방법 등의 지원이 이루어져야 하며, (2)기술적 측면으로 기술혁신과 변화의 원칙으로 보편적 설계와 보편적 서비스가 지켜질 수 있도록 해야 하며 이미 개발된 기술과 서비스에 대하여는 이를 해결하기 위한 지식정보격차 해소를 위한 지원이 필요하며, (3)정책적으로는 제4차 산업혁명과 기술혁신에 대응하기 위한 장애를 가진 사람들을 위한 장기적인 전략개발이 필요하며, 고임금-고학력 장애인 구직자와 저임금-저학력 구직 장애인을 위한 차별화된 일자리 정책개발이 필요하며, (4)제4차 산업혁명과 기술혁신으로 새롭게 일자리가 창출되는 뉴칼라 직종의 인력양성을 위한 개발 정책이 마련되어야 하며, 마지막으로 제4차 산업혁명과 급격하게 변화하는 기술혁신에 대응하기 위해서는 장애를 가진 사람들의 기초적인 자료들이 빅데이터화 될 수 있어야 한다.