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- 저자 : 신택수(Taek-Su Shin) (검색결과 6 건)
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무선 LAN에서 Ad-Hoc과 Infrastructure 모드의 자동전환 기술 설계 및 구현
신택수,조성민,민상원,Shin Taek-Su,Jo Sung-Min,Min Sang-Won 한국통신학회 2006 韓國通信學會論文誌 Vol.31 No.9A
In this paper, we propose an automatic switching technology between the ad-hoc and the infrastructure modes without user intervention in the IEEE 802.11b wireless LAN. Also, we design our proposed technology and implemented on the Linux machine. For this operation, the area within an Access Point (AP) coverage is defined as a switching area, and a node without any transmission in this area is assumed to be able to relay frames between the AP and nodes in the shaded area that is outside the coverage and cannot reach the AP. By using the proposed technology, it is possible to provide the seamless Internet access service to nodes at the ad-hoc mode in the shaded area. In this paper, we explains the operation of the detection method of the switching area, presents the flowchart and implementation environment. To prove the operation of our technology, we obtain the results of captured packets transmitted between nodes and throughput results through ftp transmission experiment. Hence, we can see that our proposed scheme can be improve the wireless access service in wireless and mobile networks. 본 논문은 IEEE 802.11b-무선 LAM 환경에서 ad-hoc 방식과 infrastructure 방식 사이의 자동 모드 전환 기술을 제안하였다. 또한 관련된 기술을 Linux 환경에 맞추어 설계 및 구현을 하였다. 제안된 메커니즘은 AP (Access Point) 서비스 영역 외곽에 switching area를 정의하고 해당 영역에 머무르는 노드는 AP와 음영지역에 있는 ad-hoc 노드를 연결 가능하게 해준다. 본 기술을 활용하여 기존 IEEE 802.11b 환경에서는 서비스가 불가능한 음영지역에 있는 노드에게도 인터넷 서비스를 제공할 수 있게 한다. 성능 검증은 switching area 감지, 패킷 전달 상황 캡춰, FTP 전송을 통한 처리량 측정으로 이루어졌고 그 결과 제안된 메커니즘기 무선 LAN 서비스를 향상 시킨다는 것을 확인할 수 있었다.
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Current and Future Biologicals Trend : Development and application
Shin Taek Su(신택수) 한국농약과학회 2022 한국농약과학회 학술발표대회 논문집 Vol.2022 No.11
The global agricultural biologicals market size is estimated to be USD 10.25 billion in 2021. The growth of this market is expected to grow form USD 11.66 billion in 2022 to USD 29.31 billion by 2029, at a CAGR of 14.07%. The increasing incidence of pests in crops, increasing consumer demand and demand for high-quality agricultural products, and the development of pest resistance in some plant protection products are some of the key factors contributing to the growth of the market.The environmental pollution caused by the abuse of crop protection chemicals is a major factor driving the demand for biological products. Biological products can be applied alone or supplement pest resistant chemicals, which is expected to serve to propel the global agrobiology market growth over the next few years. In addition, stringent regulations by agricultural regulators and agencies on the use of excessive synthetic or chemical fertilizers are expected to drive the growth of the global market. Increased investment by major international market players in the development of crop protection substances and crop nutrition products made using natural sour is expected to provide significant benefits to the global market in the coming years. Biologics used in agriculture are in increasing demand due to growing awareness of the harmful effects of synthetic plant protection substances on the environment. Biopesticides and biofertilizers. In contrast to synthetic pesticides, they are less harmful and more specific to target pests. In addition, the effectiveness of biopesticides solves the more pressing problem of pesticide residues and facilitates an integrated pest management process.
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잔디 동전마름병의 생물학적 방제를 위한 길항 미생물의 선발과 효력 검정
최기현(Kee-Hyun Choi),이재호(Jae-Ho Lee),심규열(Gyu-Yul Shim),도기석(Ki-Seok Do),정우철(Woo-Cheol Jung),신택수(Taek-Su Shin) 한국잡초학회·한국잔디학회 2006 Weed & Turfgrass Science Vol.20 No.2
퍼팅 그린의 한지형 잔디에 많은 문제가 되고 있는 동전마름병은 Sclerotinia homeocarpa에 의해 발생한다. 본 연구에서는 미생물 제제를 이용한 생물학적 방제법을 통하여 동전마름병을 방제하고자 전국의 골프장과 산, 밭 토양에서 길항 미생물을 분리하였다. 길항 미생물은 동전마름병의 병원균인 S. homeocarpa에 대한 항균활성 및 균사 생장 억제력, 배양성 등을 고려하여 선발하였고, 폿트와 퍼팅 그린의 예비 묘포지에서의 생물 검정 실험을 통하여 효력을 검정하였다. 선발된 미생물은 Bacillus subtilis EW42-1과 Trichoderma harzianum GBF-0208이었고, 생물 검정 실험 결과 화학 농약 대조구인 터부코나졸 유제와 대비하여 높은 방제 효과를 보였다. Dollar spot caused by Sclerotinia homeocarpa is one of major diseases in putting greens. Microorganisms antagonistic to S. homeocarpa, a pathogen of dollar spot, were primarily screened through in vitro tests, including dual culture method, and triple layer agar diffusion method. In vivo tests were also conducted to select the best candidate for a biocontrol microorganism, using pot experiment. Bacillus subtilis EW42-1 and Trichoderma harziaum GBF-0208 were finally selected as biocontrol agents against dollar spot. Relative Performance Index(RPI) was used as a criterion of selecting potential biocontrol agents. B. subtilis EW42-1 and T. harzianum GBF-0208 showed resistance to several agrochemicals mainly used in a golf course. B. subtilis EW42-1 and T. harzianum GBF-0208 suppressed effectively the disease progress of dollar spot like synthetic fungicide tebuconazole in the nursery where dollar spot had seriously occurred. B. subtilis EW42-1 and T. harzianum GBF-0208 have a potential to be biocontrol agents for the control of dollar spot.
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申宅秀,柳聖琦,鄭明秀,李起男 한국전통의학연구소 2006 한국전통의학지 Vol.15 No.1
This Study aims at looking into the use of oriental medical services in treating hypertension. The first objective to be explored through this study is the morbidity caused by the disease, classifying them by age, gender, and occupation. The second is to determine the regular use of anti-hypertensive medicine and their efficacy in controlling blood-pressure. The third is to investigate the use-rate and satisfaction of oriental medical service. 838 households across the country, were asked to answer questionnaires for the period of time from Apr. to Jun. 2005. The conclusion from the survey can be summarized as following. The age of which the first medical diagnosis of hypertension were made showed lower in males, those with higher education and income. The study showed females were more active in blood-pressure control, with their frequent monitoring of blood-pressure for the past year. With age, people in under 50 age group proved to be less active. The management of high blood pressure was more effective in group with regular dosage compared to group with irregular use of anti-hypertensive medication, but their difference was minimal. Also, group with no medication showed signs of blood-pressure control. The use of oriental medical service for the past year, were more frequent in groups with lower education, either low or high income, old age, females and occupations in agriculture, forestry and fishing industry. Results were similar in both general population and high blood-pressure patient group. Females, people over 51 years old and with lower education showed more intentions in utilizing oriental medical services in the future. Results were similar in both general population and high blood-pressure patient group. It is necessary to offer a more accurate information on oriental medical treatments. Also, a systematic reform to reduce the patient's share of the treatment cost, as well as, heightening public awareness on the infirmity of present blood-pressure management system is crucial.
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