• Title/Summary/Keyword: Technical dimension

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

  • Kwun, Young-Chel;Park, Dong-Gun;Son, Ki-Do;Jeong, Doo-Hwan
    • Proceedings of the Korean Institute of Intelligent Systems Conference
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    • 2004.10a
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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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The Precise Extrusion-Technical Development to Get Excellent Mechanical-property and Accurate Shape- Dimension (우수한 기계적 특성과 형상치수 확보를 위한 정밀 압출기술개발)

  • Lee, Hyun-Cheol;Lee, Kwang-Sik;Oh, Kae-Hee;Park, Sang-Woo
    • Proceedings of the KSR Conference
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    • 2009.05b
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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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    • v.40 no.1
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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.

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

  • Son, Mikyung;Lee, Hyoungtark
    • Journal of Distribution Science
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    • v.17 no.4
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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.

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

  • 최정윤
    • The Journal of Fisheries Business Administration
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    • v.17 no.2
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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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Analysis and Evaluation of Integration Policy of Local Government in 2010~2014 : Focused on Multi-Dimensional Model (2010~2014년 시·군·구 통합정책의 분석과 평가: 다차원분석모형을 중심으로)

  • Kim, Cheol Hoi;Jin, Jae-Wan
    • The Journal of the Korea Contents Association
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    • v.15 no.1
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    • pp.123-131
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    • 2015
  • The purpose of this study was to find out the reason why the integration policy of local government in 2010~2014 has failed in the light of multi-dimensional model including normative, structural, constituentive, and technical dimension. Central government pushed integration policy of local government focused on increasing economic efficiency based on the theory of economy of scale on 16 regions and 36 local governments. Only one region(Cheong-Ju and Cheong-Won), however, completed integration procedure in 2014. Although most regions don't have common value on integration, and cultural, political ties in normative and structural dimension, central government pushed the integration policy. Futhermore central government failed to coordinate various interests of the participants and design incentive system including demands of local residents in constituentive and technical dimension. Based on this study central government should consider these policy implications when it propel the integration policy of local government in the future.

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

  • 최태호
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.31 no.3
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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
    • Proceedings of the IEEK Conference
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    • 2002.07b
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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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    • v.7 no.2
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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.

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

  • Hyo Hyun Choi;Kim Sang Gyu
    • Proceedings of the Korean Society of Computer Information Conference
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    • 2023.01a
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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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