• 제목/요약/키워드: Extension dimension

검색결과 119건 처리시간 0.027초

ON THE EXTENSION DIMENSION OF MODULE CATEGORIES

  • Peng, Yeyang;Zhao, Tiwei
    • 대한수학회지
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    • 제57권6호
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    • pp.1389-1406
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    • 2020
  • Let Λ be an Artin algebra and mod Λ the category of finitely generated right Λ-modules. We prove that the radical layer length of Λ is an upper bound for the radical layer length of mod Λ. We give an upper bound for the extension dimension of mod Λ in terms of the injective dimension of a certain class of simple right Λ-modules and the radical layer length of DΛ.

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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농촌지역주민의 행정서비스 만족도 연구 (A Study on Rural Citizen Satisfaction for Local Public Service)

  • 김정태;정지웅
    • 농촌지도와개발
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    • 제9권2호
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    • pp.215-231
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    • 2002
  • The objectives of this study were (1) to measure the level of satisfaction on rural for local public service. (2) and analyse variables related to the public service. Reviewing the literature and related studies for theoretical framework, Six criteria characterize public service : (1) responsiveness. (2) convenience, (3) speed, (4) correctness, (5) pleasantness, (6) equality, which are reflected in the instrument of this study. By the results of analysis, two dimensions (convenience, responsiveness) and total satisfaction are related to their residential lengths of the same rural area. For the total public service satisfaction gender, age, educational level, income level, occupation, and residential years explained in 13.3% For the convenience dimension their variables accounted for 22.4%. For responsiveness dimension their variables interpreted in 23.2%. For speed and correctness dimension their variables explained in 21.6%. For pleasantness dimension their variables accounted for local public services in 15.3%. For equality dimension their variables explained in 16.2%.

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치수보조선을 이용한 도면의 주벽인식 (A Main Wall Recognition of Architectural Drawings using Dimension Extension Line)

  • 권영빈
    • 정보처리학회논문지B
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    • 제10B권7호
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    • pp.837-846
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    • 2003
  • 본 연구에서는 아파트의 설계도면을 처리의 대상으로 하고 있다. 이러한 아파트 도면은 굵고 평행한 두 개의 선으로 표현되는 주벽과 심볼(문, 창, 베란다. 타일 $\cdots$), 치수선(Dimension Line), 치수보조선, 여러 가지 수치를 나타내는 숫자(치수)와 문자 등으로 구성되어 있다. 본 연구에서는 이러한 아파트 도면 내에서 아파트 건물의 골격을 이루는 주벽을 인식하는 방법을 제시하고 있다. 이를 위해서 가는 라인을 제거하고 굵은 라인만을 남기는 이진화 방법을 사용하여, 이러한 라인들을 벡터화하고, 주벽의 존재위치를 한정하였다. 이를 이용해 치수보조선을 구하고 찾은 피수보조선을 이용하여 주벽을 검출하고, 찾아진 주벽에 연결되는 다른 주벽으로 영역을 확장해 나가는 방법을 구현하였다. 마지막으로, 주벽사이에 있는 창문은 비록 주벽이 아닌 창문 심볼로 표현되어 있더라도 주벽으로 인식해야 하기 때문에, 찾아진 주벽을 이용해 이들 주벽사이에 존재하는 창문을 찾는다. 실험결과 인식률에서 본 연구에서 제시하는 방법이 96.5%의 인식율을 나타내어 Karl Tombre 연구팀의 방법 90.7%보다 5.8% 더 우수하게 나타났고, 오인식의 수도 작게 나타났다.

측면 홈을 가지는 STS316 CT시험편의 정적 성장균열에 대한 프랙탈 기하학의 응용 (Application of Fractal Geometry on the Static Growing Crack of STS316 CT Specimen with a Side Groove)

  • 윤유성;권오헌
    • 한국안전학회지
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    • 제17권4호
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    • pp.38-44
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    • 2002
  • The application of fractal concept provides an useful method in the study for the quantitative analysis of irregular variations like the fracture surfaces and crack profiles. Fractal curves have characteristics that represents a self-similarity based on the fractal dimension. The fractal dimensions were obtained by the box counting method. In this report, we obtained the nearly stable fractal dimensions of fracture crack profiles for STS316 with CT specimen as the crack advances and the relationships between crack length and fractal dimension. Moreover fractal fracture parameter that corresponds to J-R curve is shown by the relationships between fractal dimension and crack extension. From the results, we concluded that crack extension of high toughness material also shows the fractal characteristics, which can be used in order to evaluate the crack life precisely.

Texture Analysis and Classification Using Wavelet Extension and Gray Level Co-occurrence Matrix for Defect Detection in Small Dimension Images

  • Agani, Nazori;Al-Attas, Syed Abd Rahman;Salleh, Sheikh Hussain Sheikh
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2004년도 ICCAS
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    • pp.2059-2064
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    • 2004
  • Texture analysis is an important role for automatic visual insfection. This paper presents an application of wavelet extension and Gray level co-occurrence matrix (GLCM) for detection of defect encountered in textured images. Texture characteristic in low quality images is not to easy task to perform caused by noise, low frequency and small dimension. In order to solve this problem, we have developed a procedure called wavelet image extension. Wavelet extension procedure is used to determine the frequency bands carrying the most information about the texture by decomposing images into multiple frequency bands and to form an image approximation with higher resolution. Thus, wavelet extension procedure offers the ability to robust feature extraction in images. Then the features are extracted from the co-occurrence matrices computed from the sub-bands which performed by partitioning the texture image into sub-window. In the detection part, Mahalanobis distance classifier is used to decide whether the test image is defective or non defective.

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기계 도면의 자동 입력을 위한 치수 집합의 인식 및 분류 (Recognition and classification of dimension set for automatic input of mechanical drawings)

  • 정윤수;박길흠
    • 전자공학회논문지S
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    • 제34S권11호
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    • pp.114-125
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    • 1997
  • This paper presents a method that automatically recognizes dimension sets from the mechanical drawings, and that classifies 6 types dimension sets according to functional purpose. In the proposed method, the object and closed-loop symbols are separated from the character-free drawings. Then object lines and interpretation lines are vectorized. And, after recognizing dimension sets(consistings of arrowhead, shape line, tail lines, extension lines, text-string, and feature control frame), we classify recognized dimension sets as horizontal, vertical, angular, diametral, radial, and leader dimension sets. Finally the proposed method converts classified dimension sets into AutoCAD data by using AutoLisp language. By using the methods of geometric modeling, the proposed method readily recognized and classifies dimension sets from complex drawings. Experimetnal results are presented, which are obtained by applying the proposed method to drawings drawn in compliance with the KS drafting standard.

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Where Some Inert Minimal Ring Extensions of a Commutative Ring Come from

  • Dobbs, David Earl
    • Kyungpook Mathematical Journal
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    • 제60권1호
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    • pp.53-69
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    • 2020
  • Let (A, M) ⊂ (B, N) be commutative quasi-local rings. We consider the property that there exists a ring D such that A ⊆ D ⊂ B and the extension D ⊂ B is inert. Examples show that the number of such D may be any non-negative integer or infinite. The existence of such D does not imply M ⊆ N. Suppose henceforth that M ⊆ N. If the field extension A/M ⊆ B/N is algebraic, the existence of such D does not imply that B is integral over A (except when B has Krull dimension 0). If A/M ⊆ B/N is a minimal field extension, there exists a unique such D, necessarily given by D = A + N (but it need not be the case that N = MB). The converse fails, even if M = N and B/M is a finite field.

농촌지도기관 간 연계 협력강화 방안에 관한 연구 (A Study of the Better Linkage and Cooperation between Agricultural Extension Agencies)

  • 윤의영
    • 농촌지도와개발
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    • 제14권1호
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    • pp.1-27
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    • 2007
  • Localization of extension services in 1997 has weakened the linkage and cooperation between the central and district extension agencies(Provincial Agricultural Research & Extension Services and City & County Technology Centers). Since agriculture needs a national or regional dimension approach in many senses, it is important for agricultural prosperity to maintain and even further strengthen the practice of cooperation between different levels of governments and extension agencies.The objective of this study was to suggest policy measures to strengthen the linkage and cooperation between agricultural extension agencies. Existing works were reviewed to see a general picture of problems associated with he localization of extension services. In order to gain insight into policy measures, questionnaire surveys to extension staffs in districts(8 of 9 Provincial Agricultural Research & Extension Services and 160 of City & County Technology Centers) were conducted. Survey respondents were mainly asked about policy measures which would contribute to strengthen the linkage and cooperation between extension service agencies.Three policy measures derived from the study are: to expand the professional and technological education at the central level; to establish the central-local partnership; and to strengthen the linkage and cooperation between city & county agricultural technology centers.

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