• 한국기술혁신학회:학술대회논문집
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• 한국기술혁신학회 2004년도 춘계학술대회
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• pp.285-309
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• 2004

Sophia Antipolis was planned to be developed as an innovative technopole in the southern french area near Nice, a tourist destination. from an area with very little scientific activities, it was created as a vibrant city with science and industrial and cultural activities begining from the early 1960s. A dedicated university professor, who became a politician later, Pirre Laffite, organized non governmental institutions and professional associations to designate an area with 2300 ha and planned it for environmentally clean technopole. Sophia Antipolis eventually bacame the most well known technopole in Europe, hosting 1,200 companies with 24,000 employees. In this context, this paper analyses the process of building Sophia Antipolis and the operational mechanisms of the technopole, based on the data gathered from interviews with managers of the companies and supporting institutions of Sophia Antipolis.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2005년도 학술발표회(1)
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• pp.88-90
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• 2005

• 한국경제지리학회지
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• 제23권1호
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• pp.110-123
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• 2020

1950년대에 탈산업화가 시작되면서 선후진국을 막론하여 세계 여러 나라들이 첨단산업집적지, 즉 테크노폴을 조성, 육성하였다. 프랑스의 소피아 앙티폴리스가 그 대표적인 예이다. 소피아 앙티폴리스는 지중해 연안의 관광 도시, 니스 인근지역 출신으로 파리광산대학의 교수와 프랑스 상원의원을 지낸 피에르 라피트(Pierre Laffite)의 제안으로 시작된 유럽 굴지의 테크노폴이다. 이 테크노폴은 1960년대 말부터 조성이 시작되어, 1990년대까지는 입주기관간 시너지효과가 없는 유명 연구기관의 단순한 집적지에 지나지 않은 것으로 평가되었다. 그러나 그 후 많은 변화가 이루어진 것으로 파악되는 바, 연구자는 소피아 앙티폴리스의 조성 과정과 성과, 그리고 그 주변 지역의 변화 등을 비교, 분석하여 정책적, 이론적 시사점을 도출하고자 하였다. 그를 위해 지역혁신론과 경로이론을 검토하여 분석 틀을 작성하였고 그에 기초하여 자료를 수집, 분석하였다. 그러한 연구에 의하면 소피아 앙티폴리스는 지난 50여 년 동안 여러 차례에 걸쳐 정책 거버넌스가 변화되었으며, 물적 성장뿐만 아니라 지역내 많은 혁신효과를 가져왔고, 역동적인 혁신환경도 조성된 것으로 파악된다.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2005년도 학술발표회(2)
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• pp.1417-1418
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• 2005

• Journal of Computational Design and Engineering
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• 제3권3호
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• pp.215-225
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• 2016

In recent years, the automotive industry has known a remarkable development in order to satisfy the customer requirements. In this paper, we will study one of the components of the automotive which is the twist beam. The study is focused on the multicriteria design of the automotive twist beam undergoing linear elastic deformation (Hooke's law). Indeed, for the design of this automotive part, there are some criteria to be considered as the rigidity (stiffness) and the resistance to fatigue. Those two criteria are known to be conflicting, therefore, our aim is to identify the Pareto front of this problem. To do this, we used a Normal Boundary Intersection (NBI) algorithm coupling with a radial basis function (RBF) metamodel in order to reduce the high calculation time needed for solving the multicriteria design problem. Otherwise, we used the free form deformation (FFD) technique for the generation of the 3D shapes of the automotive part studied during the optimization process.

• Journal of Computational Design and Engineering
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• 제2권3호
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• pp.165-175
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• 2015

One of the current challenges in the domain of the multicriteria shape optimization is to reduce the calculation time required by conventional methods. The high computational cost is due to the high number of simulation or function calls required by these methods. Recently, several studies have been led to overcome this problem by integrating a metamodel in the overall optimization loop. In this paper, we perform a coupling between the Normal Boundary Intersection - NBI - algorithm with Radial Basis Function - RBF - metamodel in order to have a simple tool with a reasonable calculation time to solve multicriteria optimization problems. First, we apply our approach to academic test cases. Then, we validate our method against an industrial case, namely, shape optimization of the bottom of an aerosol can undergoing nonlinear elasto-plastic deformation. Then, in order to select solutions among the Pareto efficient ones, we use the same surrogate approach to implement a method to compute Nash and Kalai-Smorodinsky equilibria.

• Journal of Computational Design and Engineering
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• 제1권3호
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• pp.187-193
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• 2014

One of the hottest challenges in automotive industry is related to weight reduction in sheet metal forming processes, in order to produce a high quality metal part with minimal material cost. Stamping is the most widely used sheet metal forming process; but its implementation comes with several fabrication flaws such as springback and failure. A global and simple approach to circumvent these unwanted process drawbacks consists in optimizing the initial blank shape with innovative methods. The aim of this paper is to introduce an efficient methodology to deal with complex, computationally expensive multicriteria optimization problems. Our approach is based on the combination of methods to capture the Pareto Front, approximate criteria (to save computational costs) and global optimizers. To illustrate the efficiency, we consider the stamping of an industrial workpiece as test-case. Our approach is applied to the springback and failure criteria. To optimize these two criteria, a global optimization algorithm was chosen. It is the Simulated Annealing algorithm hybridized with the Simultaneous Perturbation Stochastic Approximation in order to gain in time and in precision. The multicriteria problems amounts to the capture of the Pareto Front associated to the two criteria. Normal Boundary Intersection and Normalized Normal Constraint Method are considered for generating a set of Pareto-optimal solutions with the characteristic of uniform distribution of front points. The computational results are compared to those obtained with the well-known Non-dominated Sorting Genetic Algorithm II. The results show that our proposed approach is efficient to deal with the multicriteria shape optimization of highly non-linear mechanical systems.

• Restorative Dentistry and Endodontics
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• 제44권1호
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• pp.1.1-1.12
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• 2019

Objectives: The aim of this in vitro study was to test the effect of 2 finishing-polishing sequences (QB, combining a 12/15-fluted finishing bur and an EVO-Light polisher; QWB, adding a 30-fluted polishing bur after the 12/15-fluted finishing bur used in the QB sequence) on 5 nanotech-based resin composites (Filtek Z500, Ceram X Mono, Ceram X Duo, Tetric Evoceram, and Tetric Evoceram Bulk Fill) by comparing their final surface roughness and hardness values to those of a Mylar strip control group (MS). Materials and Methods: Twelve specimens of each nanocomposite were prepared in Teflon moulds. The surface of each resin composite was finished with QB (5 samples), QWB (5 samples), or MS (2 samples), and then evaluated (60 samples). Roughness was analysed with an optical profilometer, microhardness was tested with a Vickers indenter, and the surfaces were examined by optical and scanning electron microscopy. Data were analysed using the Kruskal-Wallis test (p < 0.05) followed by the Dunn test. Results: For the hardness and roughness of nanocomposite resin, the QWB sequence was significantly more effective than QB (p < 0.05). The Filtek Z500 showed significantly harder surfaces regardless of the finishing-polishing sequence (p < 0.05). Conclusions: QWB yielded the best values of surface roughness and hardness. The hardness and roughness of the 5 nanocomposites presented less significant differences when QWB was used.

• 농촌계획
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• 제11권4호
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• pp.17-24
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• 2005

The sustainable development of local communities is faced with limitation due to poor infrastructure and lack of cooperation among stake-holders. To overcome such circumstances and thus to ensure balanced development of the local communities, the central government is driving construction of innovative cities mainly through transfer of public institutions to local cities. In this study, to contribute to the development of plans for the future agropolis' associated with the transfer of public institutions, efficient organization mechanisms of the agropolis such as basic structure and spatial allocation was examined through analyses of advanced cases(Sophia Antipolis, St. Hyacinthe Science Part Food Valley, Stoneleigh Park) of foreign countries. The analyses showed that the organization of agropolis were consisted of three main components; 1) agricultural and food industry complex conducting R&D, 2) service facilities(information, trade, consulting and advertisement) supporting agricultural and food industries and rural enterprise center in charge of a variety of events including exhibition, rural experience, education, and contest, 3) silver facilities such as hospital and town providing medical service and residence. Based on the results, inventories of facilities which are necessary in 'the future agropolis' and their spatial allocation were suggested.

• 한국통신학회:학술대회논문집
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• 한국통신학회 2006년도 하계종합학술발표회 논문 초록집
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• pp.203-203
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• 2006