• Journal of Forest and Environmental Science
• /
• 제33권2호
• /
• pp.91-96
• /
• 2017

Trees at farm are considered as one of the option to reduce poverty of smallholders by contributing to livelihood security and resilience to climate change. A perception based study was conducted to assess the cultural importance of tree species suitable for practicing agroforestry in randomly selected agroforestry-dominated villages in Alaknanda valley of Western Himalayas during 2015-16. Semi-structured questionnaire was used to collect primary data on the provisioning services of major agroforestry tree species in randomly surveyed 87 households. Based on cultural importance (CI) index value, the most suitable agroforestry tree species was Morus alba (3.32) followed by Celtis australis (3.22), Mangifera indica (3.01), Grewia optiva (2.79), Toona ciliata (2.22), Bauhinia variegata (2.08), Leucaena leucocephala (1.76) and Emblica officinalis (1.74). The preference of use has also been governed based on their indigenous knowledge. This study will also facilitate in evaluating the importance of provisioning services of agroforestry tree species in improving livelihood as well as facilitates smallholder's resilience to climate change in Western Himalayas.

• 농촌지도와개발
• /
• 제17권4호
• /
• pp.851-875
• /
• 2010

Rural Experiential Tourism is the medium that connect a town and country. Through the form of these Rural Experiential Tourism people live in country sell indigenous products and tourism services. Both people maintain friendly relations with their friendship based on mutual trust. The aim of space planing for experience and development of experience program is make visitors learn many valuable lessons in countryside. So, Two things must discussed closely related. Also it is necessary to mention people to conduct in there. Visitors who live in Gyonggi and Chungcheong province come to frequently Geumgang Nongbau village for a day. They enjoy going for a swimming and fishing in Geumgang. In order to activate specialized experience program, it is necessary to increase the number of those exclusively responsible for that experience program and organization visitors make stay overnight in village. Also to enhancing village people's income must have agricultural stand and activate village internet site.

• 헤리티지:역사와 과학
• /
• 제33권
• /
• pp.4-35
• /
• 2000

The paddling technique is a Kind of secondary treatments in the process of ceramic forming, which appeared in the Chinese Neolithic Age pottery making. In the case of Korean prehistoric pottery making, it was first introduced together with the kiln firing method from Tongpei region(東北地方) of China in Yan(燕) dynasty occupation period. Korean archaeologists have recognized the adoption of the new technologies as a drastic innovation of ceramic production. And most of them have thought that the diffusion of new techniques, accompanied by the migration of the northern ethnic groups, had been immediately followed by the innovative changes in pottery procdution. However, rejecting the arguments from the simple diffusionist viewpoint, I have first tried to describe the innovation processes in the ceramic production systems as a spatio-temporal process. The paddling technique by the cord-wound paddle, which was first introduced among the various paddles, was associated with the new sort of pottery, round pots fired in low temperature of reducing atmosphere condition. The cord-marked round pots first tried by the indigenous potters in the southern part of Korean were characterized by the relatively low leveled techniques in forming and firing, compared to those of north-east China. The techniques of the round pots were hardly improved in the domestic production system until the appearance of the fully-specialized one. The specialized production system of the round pot, which appeared first in the mid-western region of Korea, showed the diversified paddling techniques and made the noticeable improvements in forming and firing processes.

• Nuclear Engineering and Technology
• /
• 제54권11호
• /
• pp.3975-3984
• /
• 2022

Distributed control system architecture is adopted for I&C systems of Prototype Fast Breeder Reactor, where the geographically distributed control systems are connected to centralized servers & display stations via switched Ethernet networks. TCP/IP communication plays a significant role in the successful operations of this architecture. The communication tasks at control nodes are taken care by TCP/IP offload modules; local area switched network is realized using layer-2/3 switches, which are finally connected to network interfaces of centralized servers & display stations. Safety, security, reliability, and fault tolerance of control systems used for safety-related applications of nuclear power plants is ensured by indigenous design and qualification as per guidelines laid down by regulatory authorities. In the case of commercially available components, appropriate suitability analysis is required for getting the operation clearances from regulatory authorities. This paper details the proposed approach for the suitability analysis of TCP/IP communication nodes, including control systems at the field, network switches, and servers/display stations. Development of test platform using commercially available tools and diagnostics software engineered for control nodes/display stations are described. Each TCP link behavior with impaired packets and multiple traffic loads is described, followed by benchmarking of the network switch's routing characteristics and security features.

• Parasites, Hosts and Diseases
• /
• 제62권1호
• /
• pp.151-156
• /
• 2024

Bovine borreliosis, caused by Borrelia theileri which is transmitted via hard tick bites, is associated with mild clinical symptoms, such as fever, lethargy, hemoglobinuria, anorexia, and anemia. Borrelia theileri infects various animals, such as cattle, deer, horses, goats, sheep, and wild ruminants, in Africa, Australia, and South America. Notably, no case of B. theileri infection has been reported in Korean cattle to date. In this study, 101 blood samples were collected from a Korean indigenous cattle breed, among which 1.98% tested positive for B. theileri via nested PCR. The obtained sequences exhibited high homology with B. theileri strains identified in other regions. Phylogenetic analysis of 16S rRNA confirmed the B. theileri group affiliation; however, flagellin B sequences exhibited divergence, potentially due to regional evolutionary differences. This study provides the first molecular confirmation of B. theileri infection in Korean livestock. Further isolation and nucleotide sequence analyses are necessary to better understand the presence of B. theileri strains in cows in Korea.

• Journal of Mechanical Science and Technology
• /
• 제16권6호
• /
• pp.839-850
• /
• 2002

A performance simulation program for the turboprop engine (PT6A-62), which is the power plant of the first Korean indigenous basic trainer KT-1, was developed for performance prediction, development of an EHMS (Engine Health Monitoring System) and the flight simulator. Characteristics of components including compressors, turbines, power turbines and the constant speed propeller were required for the steady state and transient performance analysis with on and off design point analysis. In most cases, these were substituted for what scaled from similar engine components'characteristics with the scaling law. The developed program was evaluated with the performance data provided by the engine manufacturer and with analysis results of GASTURB program, which is well known for the performance simulation of gas turbines. Performance parameters such as mass flow rate, compressor pressure ratio, fuel flow rate, specific fuel consumption and turbine inlet temperature were discussed to evaluate validity of the developed program at various cases. The first case was the sea level static standard condition and other cases were considered with various altitudes, flight velocities and part loads with the range between idle and 105% rotational speed of the gas generator. In the transient analysis, the Continuity of Mass Flow Method was utilized under the condition that mass stored between components is ignored and the flow compatibility is satisfied, and the Modified Euler Method was used for integration of the surplus torque. The transient performance analysis for various fuel schedules was performed. When the fuel step increase was considered, the overshoot of the turbine inlet temperature occurred. However, in case of ramp increase of the fuel longer than step increase of the fuel, the overshoot of the turbine inlet temperature was effectively reduced.

• International Journal of Contents
• /
• 제12권3호
• /
• pp.34-41
• /
• 2016

A traditional village is cultural property where old buildings and traditions are concentrated and also where indigenous traditional cultures can be recognized and experienced directly or indirectly. In addition, traditional villages have been recognized as precious resources to revitalize regional economies through tourism. Currently, signage systems have been developed as for ordinary tourist sites or cities, and concepts or methods for sign system for traditional villages have not yet been established. Therefore, it is necessary to develop disaster prevention-based signage to prevent large-scale disasters, to guarantee the safety of residents, and to increase the satisfaction of visitors in traditional villages as precious resources. A case study is conducted to apply the proposed sign system for traditional villages in Korea and Japan as a tourist-oriented sign system that has been accomplished in Korea and a large disaster-oriented sign system developed with residents as a priority in Japan. The disaster prevention sign system considers the residents since residents are victims when a disaster happens, and guideline to increase the efficacy and satisfaction are suggested. However, this study has definite limits in sucring objectivity because the objects of study are insufficient, and the development of the sign system based on effective disaster prevention considering the features of traditional villages will continue in the future.

• 한국경제지리학회지
• /
• 제2권1_2호
• /
• pp.183-194
• /
• 1999

다국적 소매기업인 일본의 다이에 슈퍼체인을 대상으로 일본내 점포망의 지역적 전개와 해외사업소의 입지전개와의 관련성을 파악한 결과 다음과 같은 점이 밝혀졌다. 다이에의 일본내 점포망의 입지전개는 기존의 경제권이나 지역적 도시 시스템과 관계없이 확대되어 도시계층에 대응한 점포지 입지전개라고는 말하기 어렵다. 이와 같은 현상은 해외사업소의 입지전개에서도 다소 나타난다. 그리고 해외사업소의 입지는 일본내 점포망의 전국화가 어느 정도 이루어진 후에 전개되었으며, 또 일본내 점포수의 증가율이 낮은 시기에 많이 이루어졌다.

• 대한환경공학회지
• /
• 제35권10호
• /
• pp.687-693
• /
• 2013

다양한 난개발과 해안도로, 방파제 등의 인공 구조물 설치로 인한 해안 침식과 해안선 파괴 등으로 해안사구가 크게 훼손되고 있다. 이에 본 연구에서는 해안사구에서 서식하고 있는 토착식물의 근권으로부터 식물 성장 촉진 능력이 있으면서 동시에 염분에 강한 내성을 가지는 근권세균의 library를 구축하였고, 이들 균주를 대상으로 식물 성장 촉진 능력을 평가하였다. 또한, 내염성 식물을 대상으로 사구 토양에서의 성장률에 근권세균이 미치는 영향을 평가한 후, 훼손된 사구의 복원에 가장 유용한 미생물을 선별하고 분리된 근권세균이 식물 성장에 미치는 영향을 평가하였다. 실험은 선정된 균주와 갯기름나물과 줄무늬갈대를 해안사구에 식재한 후 성장에 미치는 영향을 평가하였다. 그 결과, MH1RS1는 (IAA) production, siderophores, 1-aminocyclopropane-1-carboxylate deaminase (ACC deaminase) 그리고 염분내성을 가지고 있다. 갯기름나물의 경우는 줄기의 길이와 뿌리의 무게는 크게 향상되었다. 특히, 줄기의 생체와 뿌리 무게는 control과 비교했을 때 25% 성장이 향상되었다. 줄무늬 갈대는 Bacillus aerius MH1RS1 에 의해 초장은 18%와 뿌리의 생체 중은 20%로 크게 향상 되었다.

• 철학연구
• /
• 제130권
• /
• pp.381-414
• /
• 2014

이 논문은 로크의 자연법 이론과 인디헤나의 절멸에서 비롯된 식민주의의 기초를 밝히려 한다. 로크는 자연법을 철학적 전제로 설정하여 자신의 정치이론을 전개하는 것처럼 보인다. 그러나 로크는 북아메리카 지역의 식민지 건설에 참여한 경험을 바탕으로 자연법 이론을 전개했다. 로크의 '소유적 개인주의 입장'은 자연상태와 자연법의 상호관계를 토대로, 배제와 절멸의 논리를 펼친다. 소유권을 지니지 않은 사람을 배제하고, 토지를 효율적으로 경작하지 않는 사람들의 소유권을 빼앗고, 이를 토대로 노예제를 정당화하고 절멸의 논리를 펼친다. 부르주아의 문화가 아닌 모든 문화를 파괴하는 식민주의는 바로 여기에서 비롯된다. 로크는 이를 처음으로 세속적으로 전개한 최초의 사상가이다. 로크 이후에 식민주의는 18세기에는 인종주의로, 헤겔에게는 보편사의 착종으로, 다종한 문화권에서는 '오리엔탈리즘'으로 계속 판형을 거듭했다. 18세기 서양의 '철학사'가 보편사로 확고하게 자리잡으면서 사상과 이론은 서구 일변도의 식민주의와 제국주의의 보편사가 상식으로 통용되었다. 그러나 그 이면에는 제노사이드를 비롯한 인종의 절멸이라는 역사적 과정과 그 철학적 정당화가 잠복해 있었다.