• 농촌계획
• /
• 제11권4호
• /
• pp.9-15
• /
• 2005

Rural amenity resources are damaged without organized management infra. National rural resources institute perform the project of developing rural amenity infra techniques from 2005 to 2009 targeting 1,230 eup-myun rural community. There are many resource surveying project in national level. For avoiding duplicated investment, clear definition of rural amenity and essential surveying items are needed. In this study, concept of rural amenity and relation with resource are considered and 10 rural amenity resource tables and items considering management, accessibility, and amenity period are developed. Finally, developed tables and items are compared with items in previous developed surveying system.

• 한국군사과학기술학회지
• /
• 제9권4호
• /
• pp.24-31
• /
• 2006

To reduce the interferences between the radio equipments which are operated in frequency hopping mode, the frequency resource should be assigned to each equipment without overlapping when several groups of radio equipments operate in the same area. If the radio equipments are in a different area, the partial frequency overlaying can be permitted. From the isotropic multi-dimensional array, several frequency assignment tables can be extracted for a same area. Also several tables can be extracted for different areas. Since there can be no overlapped frequencies between the tables for the same area, no interference between the radio equipments in an area is guaranteed. The frequencies overlapped between 2 tables for 2 different areas are pre-planed as required. The interference performance in frequency hopping radio can be controlled as desired using the proposed Frequency Resource Assignment Algorithm using Isotropic multi-dimensional Array.

• 디지털산업정보학회논문지
• /
• 제6권2호
• /
• pp.55-69
• /
• 2010

This article proposed the authentication protocol for peer-to-peer resource sharing community. The proposed protocol does not require a priori information for generating and exchanging authentication key. Also this protocol can provide the delicate access control by allowing the user(authenticator) to assign the trust level to the authentication supplicant, which can be used to decide if the resource providing node will accept the resource sharing request from a resource requesting node. Trust Relationship Chaining provides the environment where trust levels (included in the trust table) of nodes in the resource sharing community are propagated among nodes when trust tables are exchanged between two nodes engaged in mutual authentication process and authentication refresh so that any two nodes which are not directly mutual-authenticated can assign the trust level each other for the access control for resource sharing. In the proposed protocol a node can implements the authentication refresh continuously to verify the effectiveness of authentication after mutual authentication so that the authentication of new node or authentication revocation(effectiveness cancellation) of the departed node can be propagated to the all the nodes in RSC and eventually safe resource sharing community is configured.

• Journal of Forest and Environmental Science
• /
• 제28권4호
• /
• pp.205-211
• /
• 2012

Yield tables are a frequently used data base for regional timber resource forecasting. A normal yield table is based on two independent variables, age and site (species constant), and applies to fully stocked (or normal) stands while empirical yield tables are based on average rather than fully stocked stands. Normal and empirical yield tables essentially have many limitations. The limitations of normal and empirical yield tables led to the development of variable density yield tables. Mathematical models for estimating timber yields are usually developed by fitting a suitable equation to observed data. The model is then used to predict yields for conditions resembling those of the original data set. It may be accurate for the specific conditions, but of unproven accuracy or even entirely useless in other circumstances. Thus, these models tend to be specific rather than general and require validation before applying to other areas. Dalbergia sissoo forms a major portion of irrigated plantations in the hot desert of India and is an important timber tree species where stem wood is primarily used as timber. Variable density yield model is not available for this species which is very crucial in long-term planning for managing the plantations on a sustained basis. Thus, the objective of this study was to develop variable density yield model based on the data collected from 30 sample plots of D. sissoo laid out in IGNP area of Rajasthan State (India) and measured annually for 5 years. The best approximating model was selected based on the fit statistics among the models tested in the study. The model develop was evaluated based on quantitative and qualitative statistical criteria which showed that the model is statistically sound in prediction. The model can be safely applied on D. sissooo plantations in the study area or areas having similar conditions.

• 정보처리학회논문지C
• /
• 제14C권7호
• /
• pp.559-570
• /
• 2007

본 논문에서는 NSIS(Next Step in Signaling) 시그널링 프로토콜을 기반으로 VPN(Virtual Private Network) QoS(Quality of Service) 서비스 모델인 Hose 모델 자원 준비(Resource Provisioning) 메커니즘에 따라 자원을 예약하고 관리하는 Hose-NSIS-QoSM을 제안한다. 구체적으로 Hose-NSIS-QoSM을 위한 NSIS 메시지 객체(Objects), QoS NSLP(NSIS Signaling Layer Protocol)/NTLP(NSIS Transport Layer Protocol)/RMF(Resource Management Function) 상태 테이블, NSIS 노드에서의 메시지 처리 과정을 정의하였다. 또한, MPLS 네트워크에서의 VPN의 Hose 기반 QoS 서비스 모델을 지원하기 위해 확장된 RSVP-TE(Resource Reservation Protocol-Traffic Engineering)를 이용하는 시그널링 방안인 Hose-RSVP-TE-QoSM과 본 논문에서 제안하는 방안인 Hose-NSIS-QoSM를 비교하였다.

• 가족자원경영과 정책
• /
• 제10권2호
• /
• pp.19-42
• /
• 2006

The purpose of this study is to analyze the changes in contents of home management part in the home economics textbooks fur middle school from the 1st to the 7th curriculum period. The contents in the all of home economics textbooks published in every curriculum period are analyzed. The major findings of this study are as follows: 1. The part of home management is divided into seven specific areas including 'definition and process of home management', 'utilization of family resource and environment management', 'time management', 'household labor/work nanagement', 'family financial management', 'purchasing', and 'consumer protection'. 2. From the 6th curriculum period, the area of 'definition and process of home management' begun to be explained using system's approach and the area of 'household labor/work management' changed its' focus from household to self management. 3. The areas emphasized in the beginning of curriculum period were 'family financial management' and 'household labor/work management'. The 'consumer protection' ' and 'utilization of family resource and environment management' were the areas emphasized in the later curriculum period. 4. The contents of 'family financial management' area have changed very little, however, the contents of 'purchasing' area have changed a lot during the all curriculum periods. 5. The contents of illustrations, tables, pictures, and activities have changed according to changes of the contents of the textbooks.

• 자원ㆍ환경경제연구
• /
• 제14권4호
• /
• pp.839-866
• /
• 2005

본 연구는 우리나라 국가경제에서 중요한 역할을 맡고 있는 원자력부문의 연구개발투자가 국가경제에 미치는 효과를 분석하기 위해, 사례연구로서 한국원자력연구소의 연구개발투자 지출이 국가경제에 미치는 파급효과를 소비, 투자, 수출, 수입, 생산, 부가가치로 구분하여 분석하였다. 분석을 위해 2000년도 산업연관표에 기반을 둔 공급유도형 및 수요유도형 산업연관모형을 구축하였으며 각 모형으로부터 연쇄효과 승수를 도출하여 파급효과를 분석하였다.

• 자원ㆍ환경경제연구
• /
• 제24권1호
• /
• pp.109-139
• /
• 2015

현행 국가통계인 에너지밸런스 표는 우리나라 에너지 부문의 현황파악의 기초지표임에도 불구하고 IEA 기준의 에너지밸런스 표와 체계 및 수치상의 큰 차이가 있다는 선행연구를 근거로, 본 연구에서는 서로 다른 통계체계를 갖는 2009년 에너지경제연구원(KEEI) 기준의 에너지밸런스 표와 국제에너지기구(IEA) 기준의 에너지밸런스 표의 비교를 위한 기초적인 틀을 마련하고, 그 구체적인 차이를 백분율 값으로 비교 분석하여 보았다. 에너지원별, 세부 용도별로 그 구체적인 차이를 산정해 본 결과, 1차에너지공급과 에너지전환에서 에너지유가 32% 이상의 큰 차이가 나타났고, 최종에너지소비에서는 비에너지의 납사가 석유 화학에서 14.58%의 차이를 보이고 있는 등 최종에너지소비 기준으로 KEEI 에너지밸런스 통계가 IEA 통계에 비해 3.58% 크게 나타남을 확인하였다. 에너지통계는 이를 기반으로 하는 연구 및 정책 결정에 중요한 기초자료가 된다는 점에서 추가 연구와 개선을 위한 대책 마련이 필요해 보인다.

• 수산경영론집
• /
• 제52권4호
• /
• pp.45-63
• /
• 2021

The purpose of this study is to analyze the structure, status and economic ripple effects of the fisheries processing industry in Korea using interindustry analysis. Five input-output tables published over the past twenty years have been reclassified with a focus on the fisheries processing sector. Through these multi-period tables, we analyzed changes in the inducing effects in production, value added and employment as well as the backward-forward linkage effects. As a result of the analysis, it was found that the industrial scale of the fisheries processing industry is very small compared to other food manufacturing industries. The backward linkage effect of the fisheries processing industry was greater than that of other industries, but the forward linkage effect was rather low. This means that the fisheries processing industry can be greatly affected by industrial depression of the downstream industries such as fishery and aquaculture. Production and employment-inducing effects of the fisheries processing industry have shown a decreasing trend in recent years. This reflects the reality that intermediate inputs are gradually being replaced by imports from domestic production due to the expansion of market opening and the depletion of fishery resource. In the future, it is necessary to prepare a strategy to increase the value-added productivity of the fisheries processing sector and foster it as an export industry.

• 대한화학회지
• /
• 제60권5호
• /
• pp.327-341
• /
• 2016

This study explores the effective visual resources in the “regularity in chemical reactions” unit of ninth grade science textbooks (2009 revised version). The frequency and role of visual resources were initially examined, and the students’ perceptions of visual resources were investigated. The results of the analysis represented the learning material presentation (68%), motivational categories (14%), guide to inquiry procedures (9%), and inquiry results and summaries (8%). According to the investigation of the students’ perceptions of visual resources, the most effective visual resource for motivation is a photograph depicting physical and chemical changes, such as in bread baking and the most effective for learning material presentations in mass conservation, definite proportion, and stoichiometric concept units were a cartoon, graph, and formula representing stoichiometric phenomena, respectively. The most effective resource for guide to inquiry (experimental) procedures were photographs of both instruments and sequential experiment processes; and in the inquiry results and summary category, incomplete tables and graphs for students to work on themselves. The aims of this research are to increase the usefulness of visual resources in the teaching-learning activity and provide informative supplements for the development and improvement of visual resources, according to the students’ perceptions.