• 제목/요약/키워드: Technical dimension

검색결과 164건 처리시간 0.028초

$E_N^{n_N}$상의 비선형 퍼지 Integro 미분방정식에 대한 제어가능성 (Controllabi1ity of the nonlinear Fuzzy Integro-Differential Equation on $E_N^{n_N}$)

  • Kwun, Young-Chel;Park, Dong-Gun;Son, Ki-Do;Jeong, Doo-Hwan
    • 한국지능시스템학회:학술대회논문집
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    • 한국퍼지및지능시스템학회 2004년도 추계학술대회 학술발표 논문집 제14권 제2호
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    • pp.345-350
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    • 2004
  • In this paper we study the controllability for the nonlinear fuzzy integro-differential equations on E$_{N}$$^{n}$ by using the concept of fuzzy number of dimension n whose values are normal, convex, upper semicontinuous and compactly supported surface in R$^n$. E$_{N}$$^{n}$ be the set of all fuzzy numbers in R$^n$ with edges having bases parallel to axis X$_1$, X$_2$, …, X$_{n}$ .X> .

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우수한 기계적 특성과 형상치수 확보를 위한 정밀 압출기술개발 (The Precise Extrusion-Technical Development to Get Excellent Mechanical-property and Accurate Shape- Dimension)

  • 이현철;이광식;오개희;박상우
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2009년도 춘계학술대회 논문집 특별세미나,특별/일반세션
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    • pp.311-320
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    • 2009
  • Most advanced countries are researching to apply light weight materials far rolling stock because weight reduction for railway body derives cost-saving, energy-saving, and high-speed. Likewise, current Korea rolling stock field makes arduous effects of weight-reduction, miniaturization, and high-efficiency to achieve a high-speed railway. Aluminum becomes suitable material for these projects because it is much lighter than steel or stainless. Manufacturing the railway car body by using the Aluminum is increasing because Aluminum is not bringing the corrosion by unique oxidation-passivate. Aluminum extrusion profile far railway body requires a high mechanical property, accurate shape dimension, and stable quality because the railway body is composed with many different kinds of extruded profiles. Therefore, it is necessary to research about Aluminum precision-extrusion technology to maintain exit temperature and die load. The goal of this project is applying the Aluminum extrusion profile to next-generation railway car body by developing the Aluminum extrusion profile according to precision-extrusion technology which may maintain isothermal exit temperature.

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Constant Acceleration in Fractal Structures with Fractal Dimension D = 2

  • Alexander Yushchenko;Yeuncheol Jeong;Volodymyr Yushchenko;Aizat Demessinova;Kyung Sook Jeong
    • Journal of Astronomy and Space Sciences
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    • 제40권1호
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    • pp.29-33
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    • 2023
  • An unexplained acceleration on the order of 10-8 cm s-2, which is close to cH, where c is the speed of light and H is the Hubble constant, is detected in gravitationally bound systems of different scales, from the solar system to clusters of galaxies. We found that any test body located inside a fractal structure with fractal dimension D = 2 experiences acceleration of the same order and confirmed the previous work that photons propagating through this structure decrease the frequency owing to gravitational redshift. The acceleration can be directed against the movement of the test body. The fractal distribution of the matter should be at scales of at least hundreds of megaparsecs to a few gigaparsecs for the existence of this acceleration.

B2B 거래기업 특성이 관계성과에 미치는 영향 : 기술환경 불확실성의 조절 효과 중심으로 (The Effect of B2B Transaction Characteristics on Relationship Performance : The moderating Role of Technical Environment Uncertainty)

  • 손미경;이형탁
    • 유통과학연구
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    • 제17권4호
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    • pp.59-68
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    • 2019
  • Purpose - The purpose of this study is to examine the differential mediating effects of three dimensions of buyer trust in the influence of supplier characteristics on the relationship performance. In this study, transaction characteristics were classified into competences and assets. The corporate reputation is considered as intangible assets, the customer-linking capability is considered among the competencies and transaction specific asset is selected from tangible assets. This study is also to examine the moderating effect of technical environment uncertainty in the effects of integrity and benevolence on the intention to continue trading. This study aims to provide a guide on which dimension suppliers should manage and how to improve their trust in order to maintain business with companies in technical environment uncertainty. Research design, data, and methodology - The data for the empirical analysis of this study were obtained by interviewing the 274 purchasing managers of Daegu - Gyeongbuk small and medium enterprises. The items used in this survey were partially modified to fit the characteristics of the B2B industry. The reliability and validity of the variables were analyzed using SPSS 18.0 and AMOS 18.0 programs and hypotheses were verified through the structural equation modeling. Results - In this study, reliability was examined by Cronbach 'α test. Composite Reliability and Average Mean Variance extracted value exceeded the baseline values. As a result of hypotheses testing, the hypothesis that the transaction specific asset will improve the benevolence and that benevolence will improve the intention to continue the transaction were rejected and all the other 9 hypotheses were adopted include 2 moderating hypothesis. Conclusions - This study shows which dimension of trust suppliers should appeal to the buyer according to the uncertainty of the technology environment in order to maintain the transaction with the buyer. competence and integrity are important when technology environment uncertainty is low, and competence and benevolence are important when technical environment uncertainty is high. In order to improve competence, corporate reputation and transaction-specific asset are important. To improve integrity, corporate reputation and customer-linking capability are important. In order to improve benevolence, customer-linking capability is important. And various implications were discussed.

어촌지도사업의 평가 (An Evaluation on the Operating of Fisheries Extension Services)

  • 최정윤
    • 수산경영론집
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    • 제17권2호
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    • pp.65-106
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    • 1986
  • 1, The Purpose of Study This is a study on the Evaluation of the operating of Fisheries Extension Services of Korea, for performing the activities such as guiding fisheries technique as well as offering industrial information to the fishermen in fishing village. By doing so, the Fisheries Extension Sevices(FES) can materialize the continued growth of fisheries, the social and economic development of fishing village, and the increase in income by enhancing the knowledge level of Fishermen, etc. In performing fisheries policy, this activity plays a great role on the research and development activity, and it has become practical since 1976 in Korea. In order to meet immediately with the problem of fisheries technical innovation and rapid environmental changes surrounding the fisheries, the fishermen should not only enhance their scientific and comprehensive capacity in fisheries technique but abtain various effective information. Generally, as most of all the fishemen are poor in the managerial structure and scattered in fishing villages, they have little opportunity in the contact of information. As a result, it is nessessary for the FES to perform the fishing business by the extension service officials who has received special training and acquired fisheries know-how in these fields. And yet, FES is under the unfullfilled circumstance in such factors as manpower, technical know-how, equipment, and the service system etc., which is required in promoting the social, economic development of fishing village and in resolving the high technique demand of fisherman. This study on the fisheries extension services have been studied from those backgrounds. 2. Research Method The data of collecting methods which were necessary in carrying out this study was adopted by the questionaire research on the present extension service activity, through the subject of the extension services (driving agency of the work and the officials), the object(fishemen) and the 3rd observers to the extension services (the authorities concerned). The research sample was taken by the sampling extraction of total 1, 774 men from the above 3 groups. And the research was carried out from August, 1986 to October, 1986, supported from the Fisheries Extension Office (FEO) located in field during the research process. In this study, the levels of the extension operating were determined and estimated in accordance with the extension service method, morale of extension service officials and the extension service system, etc. through the collected data of the research questionaire paper. And based on this result, the essential conditions of the extension services were grasped, and also we tried to present the various activity plan necessary to promote the operating of the extension services. The questionaire research data was calculated by the computer center of National Fisheries University of Pusan, and the total result was again tried on the one demension analysis along with two dimension analysis to search out the relativity between the questionaire, and the statistical test was done $\chi$$^2$test in significance level of l~5%. 3. Contents of Study This study consists of 7 chapters and the contents are as follows : Chapter I : The object and method of the study Chapter II : The assessment and analysis of the extension services Chapter III : The contents and method of the extension services Chapter IV : Analysis of the essential conditions for the extension services Chapter V : The evaluation of activities of extension services Chapter Ⅵ : Conclusion.4. Results and RecommendationTherefore, the results of this study estimated by logical process and analysis are as follows : 1) Most of Korean fishing villages and coastal fishermen have shown much concerns about fisheries technique and social changes, thus many of them were confronted with new problems on how to adapt and to meet changes. 2) Majority of fishermen estimated FEO as an organization of specific technologies with all the thing concerning the fisheries technique in general. Therefore the fishermen wanted to utilize the FEO as an adaptable method for the modern fisheries techniques as well as the environmental changes. 3) In contrast with the fast changes of the fisheries technique, the complexity and variety of technical system and the broadness of fishing village and fishermen, it was revealed that the necessary factors such as the facilities, manpower, budget, and the level of applying techniques of the FEO located in field were highly insufficient. Accordingly, the guiding efficiency was low and the extension services did not provide full solution to the various request from fishermen. 4) It is possible to classify the activation factor for the extension service into two large dimension ; personal dimension relevant to guidance officials and work dimension relevant to the organization. And it was found that the activation level of the work dimension was far lower than the personal dimension between them. So, the activation should be done first in the dimesion to promote the activation of the extension services. 5) The extension services officials are now demoralized in general, thus it is necessary to take reality into consideration : the expense of activity, the adequate endowment of activity scope and the reasonable operation of the position class, etc to enhance its morale. However, in order to do the FES activation, first of all, the systems should be established which is lain unsettled stage until now. And there must be change in the understanding of government i.e. the fisheries extension services are the essential policy subject to build up the base of fisheries growth and modernize the fisheries management. And it should be driven positively with the recognition of the "lasting project".g project".uot;.

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2010~2014년 시·군·구 통합정책의 분석과 평가: 다차원분석모형을 중심으로 (Analysis and Evaluation of Integration Policy of Local Government in 2010~2014 : Focused on Multi-Dimensional Model)

  • 김철회;진재완
    • 한국콘텐츠학회논문지
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    • 제15권1호
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    • pp.123-131
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    • 2015
  • 본 연구는 2010~2014년 사이에 중앙정부가 추진한 시 군구 통합정책을 다차원분석모형에 기초하여 분석하고 있다. 2010년 이후 중앙정부는 환경변화로 생활권과 행정구역이 일치하지 않게 되었거나, 인구고령화 등으로 인구가 급격히 감소한 지방자치단체를 대상으로 통합을 추진하여 효율성을 증진시키려 하였다. 그러나 중앙정부의 의도와는 달리, 지역주민의 공감대 부족, 정치적 반대 등 복잡한 요인의 영향으로 최종적으로 중앙정부가 선정한 16개 지역 36개 시 군 구 중에서 시 군 구 통합에 성공한 지역은 단 1개(청주 청원)에 그쳤다. 본 연구는 다차원분석모형에 따라 이명박정부가 추진한 시 군 구 통합정책을 규범적, 구조적, 구성적, 기술적 측면에서 분석 평가한 결과, 다음과 같은 이유로 정책이 성공적으로 추진되지 못하였다는 결론을 도출하였다. 규범적 측면에서 통합 대상 지역 주민들 사이에 통합의 가치에 대한 공감대를 형성하지 못했고, 구조적 측면에서 기존에 형성되어 있는 지역의 문화 정치적 정서 차이를 극복하지 못한 상태에서 정책이 중앙정부 주도로 추진되었다. 구성적 측면에서 통합 대상 지역의 이익을 대표하는 구성원들의 이해관계를 통합과정에 충실히 조정하지 못하였으며, 기술적 측면에서도 통합의 유인제도 설계에 지역주민의 수요가 적절히 반영되지 못하였다. 이러한 결과는 향후에 이루어질 시 군 구 통합정책이 규범적, 구조적, 구성적, 기술적 측면에서 통합 대상 지역주민의 의견을 충실히 반영하는 방향으로 설계되고, 충분한 시간을 두고 자율적인 참여를 통해 이루어질 수 있도록 유도하는 방향으로 추진되어야 한다는 정책적 함의를 주고 있다.

뽕나물 이용한 새로운 한지의 제조(제 1보)-해부학적 , 화학적 성밀 및 펄프화 특성- (New Korean Traditional Papermaking from Morus spp.(I)-Anatomical and Chemical Properties and Pulping Characteristics-)

  • 최태호
    • 펄프종이기술
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    • 제31권3호
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    • pp.96-104
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    • 1999
  • Anatomical and chemical properties of three mulberry species (Morus spp) were analyzed as an alternative row material for the paper mulberry (Broussonetia kazinoki) . The pulping and papermaing characteristics of bast fiber and whole stalks by three different pulping processes, conventional alkali, alkali-hydrogen peroxide, and sulfomethylated, for the Hanji were investigated. The fiber dimension of M.bombycis was the biggest of the species. The fiber length of upper part and the fiber width and cell wall thickness of lower part were bigger than the others. The extractives and ash contents of bast fiber were higher than those of whole stalk , and holocellulose and lignin contents of whole stalk were higher than those of bast fiber. The pulp yields of M.alba bast fiber, M.bombycis whole stalk, and sufomethylated pulping were higher than the others.

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A Study on the Hot Carrier Effect Improvement by HLDBD (High-temperature Low pressure Dielectric Buffered Deposition)

  • Lee, Yong-Hui;Kim, Hyeon-Ho;Woo, Kyong-Whan;Kim, Hyeon-Ki;Yi, Jae-Young;Yi, Cheon-Hee
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 2002년도 ITC-CSCC -2
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    • pp.1042-1045
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    • 2002
  • The scaling of device dimension and supply voltage with high performance and reliability has been the main subject in the evolution of VLSI technology, The MOSFET structures become susceptible to high field related reliability problems such as hot-electron induced device degradation and dielectric breakdown. HLDBD(HLD Buffered Deposition) is used to decrease junction electric field in this paper. Also we compared the hot carrier characteristics of HLDBD and conventional.

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Nonlinear static analysis of smart beams under transverse loads and thermal-electrical environments

  • Ali, Hayder A.K.;Al-Toki, Mouayed H.Z.;Fenjan, Raad M.;Faleh, Nadhim M.
    • Advances in Computational Design
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    • 제7권2호
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    • pp.99-112
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    • 2022
  • This research has been devoted to examine nonlinear static bending analysis of smart beams with nano dimension exposed to thermal environment. The beam elastic properties are corresponding to piezo-magnetic material of different compositions. The large deflection analysis of the beam has been performed assuming that the beam is exposed to transverse uniform pressure. Based on the rule of Hamilton, the governing equations have been derived for a nonlocal thin beam and solved using differential quadrature method. Temperature variation effect on nonlinear deflection of the smart beams has been studied. Also, the beam deflection is shown to be affected by electric voltage, magnetic intensity and material composition.

Three JS를 이용한 삼차원 세계역사지도 웹페이지 구현 (Development of 3D World History Map Webpage Using Three.js)

  • 최효현;김상규
    • 한국컴퓨터정보학회:학술대회논문집
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    • 한국컴퓨터정보학회 2023년도 제67차 동계학술대회논문집 31권1호
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    • pp.281-282
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    • 2023
  • 본 논문에서는 전세계의 역사들을 시간대별로 정리하여 이용자들에게 제공하는 3차원 세계역사지도 웹페이지를 구현한다. 이를 통해, 사용자가 3차원 공간 안에서 지구본을 돌려보며 본인이 알고 있던 역사와 동시대에 일어났던 사건들을 비교해보거나, 몰랐던 사실들을 깨달음으로써 전 세계 역사를 연결 지어 인식하게 하고, 나아가 역사 학습 흥미를 일으키고자 한다. Three JS를 이용하여 웹페이지 내에 삼차원 공간을 렌더링하였고, Raycasting 기법 등의 방법으로 흥미를 유발할 수 있는 상호작용 기능을 구현하였다. 또한 실시간 데이터베이스는 구글의 Firebase 서비스를 이용하여 구현하였다.

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