• 한국어업기술학회:학술대회논문집
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• 한국어업기술학회 2003년도 추계 학술대회 논문집
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• pp.1-8
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• 2003

Acoustics is widely used in marine and inland fisheries research and management. In June 2002 ICES (Council for the Exploration of the Sea) held a symposium titled “Acoustics in Fisheries and Aquatic Ecology” in Montpellier, France. There were several topics to be presented such as ecology marine waters, combination of methods, target strength (TS) method and results, TS modeling, survey design, behavior, avoidance, technology, and identification. (omitted)

• Journal of Preventive Medicine and Public Health
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• 제45권3호
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• pp.196-203
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• 2012

Objectives: Even though experimental studies have suggested that iron can be involved in generating oxidative stress, epidemiologic studies on the association of markers of body iron stores with cardiovascular disease or cancer remain controversial. This study was performed to examine the association of serum ferritin and transferrin saturation (%TS) with all-cause, cancer, and cardiovascular mortality. Methods: The study subjects were men aged 50 years or older and postmenopausal women of the Third National Health and Nutrition Examination Survey 1988-1994. Participants were followed-up for mortality through December 31, 2006. Results: Serum ferritin was not associated with all-cause, cancer, or cardiovascular mortality for either men or postmenopausal women. However, all-cause, cancer, and cardiovascular mortality were inversely associated with %TS in men. Compared with men in the lowest quintile, adjusted hazard ratios for all-cause, cancer, and cardiovascular mortality were 0.85, 0.86, 0.76, and 0.74 ($p$ for trend < 0.01), 0.82, 0.73, 0.75, and 0.63 ($p$ for trend < 0.01), and 0.86, 0.81, 0.72, and 0.76 ($p$ for trend < 0.01), respectively. For postmenopausal women, inverse associations were also observed for all-cause and cardiovascular mortality, but cancer mortality showed the significantly lower mortality only in the 2nd quintile of %TS compared with that of the 1st quintile. Conclusions: Unlike speculation on the role of iron from experimental studies, %TS was inversely associated with allcause, cancer and cardiovascular mortality in men and postmenopausal women. On the other hand, serum ferritin was not associated with all-cause, cancer, or cardiovascular mortality.

• 대한공간정보학회지
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• 제21권4호
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• pp.117-123
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• 2013

본 연구에서는 Network RTK 측량 성과와 기존 확정성과(TS기반)에 대해 지역별 적용 정확도 분석을 통해 향후 지적재조사사업에서의 Network RTK 측량의 합리적인 적용 방안을 제시해보고자 하였다. 이를 위해 실험지역을 선정하고 총 307점에 대해 Network RTK 측량으로 성과를 취득하고 이를 확정성과와 비교한 결과 전체 연결오차의 RMSE는 ${\pm}0.1028m$로 분석되었고, 총 48점이 지적재조사 허용기준(0.07m)을 초과하는 것으로 나타났다. 연구에서는 이러한 분석결과를 종합적으로 평가한 후 향후 지적재조사사업에서의 현실적인 대안을 제시해 보았다. 즉, Network RTK와 전자평판 통합형 측량 기법의 개발 적용을 제안하였다. 그리고 최초 일필지 성과 취득은 토털스테이션측량으로 단일화를 하고, 검사측량에 Network RTK 측량을 적용하는 방법을 제안하였다.

• 생물정신의학
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• 제4권1호
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• pp.102-107
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• 1997

홍삼사포닌분획의 항불안작용의 양상을 검색하고자 사포닌분획을 사용하여 실험 동물에서 항불안작용을 검색하고 이들의 작용을 benzodiazepine의 대표적 약물인 diazepam의 효과와 비교하여 보았다. 실험동물에서 항불안효과의 검정을 위하여 생쥐에게 각각 상이 한 단일성분 함량을 지닌 여러분획들을 투여 후 elevated plus maze법을 사용하여 항불안효과를 비교, 관찰하였다. 실험결과 홍삼 ginsenoside Rg1, Rf 및 Re 등의 함량이 보다 높은 TSI 분획에서 항불안 효과를 관찰하였다. 중추신경계에 작용하여 진정효과를 나타내는 약물 중 특히 항불안제의 작용에 관여하는 신경전달물질 수용체로 현재까지 가장 주목을 받고 있는 것은 GABA A-benzodiazepine 수용체-chloride통로 복합체에 있는 benzodiazepine 수용체이다. 본 실험결과 관찰한 홍삼 사포닌의 항불안작용의 기전 규명을 위한 접근방법으로 홍삼 사포닌의 benzodiazepine 수용체에 대한 수용체 결합력을 관찰하고자, 흰쥐의 대뇌 피질을 검체로 하여 benzodiazepine 수용체에 대한 [$^3H$] Ro15-1788 결합 실험을 실시하였다. 홍삼 사포닌 분획들은 benzodiazpine 수용체에 결합하는 반응성을 보였으며, ginsenoside Rb, Re 및 Rd등의 함량이 높은 TSIV 분획이 가장 높은 결합력을 나타내었는데, 이 분획에서는 항불안 작용을 관찰할 수 없었다. 이상의 결과에서 볼 때 홍삼사포닌은 항불안작용을 나타내었으며, 이 항불안작용과 benzodiazepine 수용체에 대한 결합력과의 연관성은 관찰되지 않았다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2005년도 ICCAS
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• pp.1791-1796
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• 2005

Semi-shield tunneling is one of the propulsion construction methods used to lay pipes underground between two pits named 'entrance' and 'destination', respectively. Usually a simple composition, such as 'a fiducial target at the entrance+a total station (TS)+a target on the machine', is used to confirm the planned course. However, unavoidable curved sections are present in small-sized pipe lines, which are laid after implementation of a road system, for public works such as waterworks, sewer, electrical power, and gas and communication networks. Therefore, if the planned course has a curved section, it is difficult to survey the course with the abovementioned simple composition. This difficulty could be solved by using the multiple total stations (MTS), which attaches the cross type linear LED target to oneself. The MTS are disposed to where each TS can detect the LED target at the other TS or the base point or the machine. And the accurate relative positions between each MTS and target are calculated from measured data. This research proposes the relative and absolute coordinate calculation algorithm by using three MTS to measure a curved course with 20m curvature at 30m maximum distance, and verifies the algorithm experimentally.

• 유통과학연구
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• 제14권4호
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• pp.67-79
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• 2016

Purpose - Over recent years, we have concerned about safety and quality on food products because of delivery complexity. The dependence of foreign food products escalate supply of products. And there are often negligent accident of marine and agricultural products. Therefore, the complexity increases the importance of safety on food and information quality for consumers. In spite of the interest augmentation of various interested parties, there is decrease in reliability and effectiveness, if it would be established without the right directivity. For the study, we tried to examine the first considerations the point of - view in service environment and information quality with accepting and diffusing the Traceability System. Then, we tried to verify the relationships between the factors of TS and the determinants of behavior decision. Next, we made efforts to find the mutual relationship among distributors, producers, consumers and the other prerequisite factors from the point of view in service environment and information quality in order to operate effectively the information perspective and system. Research design, data, and methodology - For the purpose of this study, the samples of consumers were targeted to Traceability System, and 661 people have been investigated. Through theoretical discussion of previous research, nine hypotheses were established, the influence of Continuous User Intention in TS. In order to test the hypotheses, a survey had conducted for 661 consumers as opinion leaders in their 20s-60s as data, and structural equation modeling was used. The difference analysis between Agricultural and Marine Products in TS; SPSS 22.0 and AMOS 22.0 were used for statistical analysis. Results - The major findings from this study were as follow; all factors of information quality excluding completeness and a social-impact had effects on the ease of use; all factors excluding understand ability in information quality and a social-impact had effects on the usefulness; completeness and social-impact had effects on perceived value; the ease of use had effects on usefulness and perceived value; usefulness had effects on perceived value and the intention of continuous use. From the results of different analysis, the CPLT(Completeness) factor has positive effects on Easy of USE and PV(Perceived Value) strongly in agricultural products. On the other hand, Social Duty has positive effects on Easy of Use strongly in marine products. Conclusion - In the age of information overflowing, TS will be a burden for users if it places too much emphasis upon accessibility. To accept and diffuse TS safely, therefore, Information System should be settled first into initial market formation. In addition, if TS elements are considered in conjunction with information factors and user environment, the acceptance and diffusion of TS would make synergy effect, even better. That is, this study contributes to the acceptance and diffusion of Traceability System. Accordingly, information quality will be settled into initial market formation. Also, social-impact element will be considered in conjunction with information quality's factors, and it will make synergy effect.

• Ocean and Polar Research
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• 제30권2호
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• pp.181-191
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• 2008

This study aims at assessment of spatio-temporal distribution of demersal fish aggregations near the west coast of Jeju Island using hydroacoustic survey. A 200 kHz split beam transducer attached to a small towed body was used for all acoustic investigations. The received acoustic data were in situ acoustic target strength (TS, dB) for all pings and nautical area scattering coefficient(NASC, $m^2/mile^2$) for 0.1 mile along 12 acoustic transects. Demersal fish aggregations are distributed around the coastal slope having 20 to 30 m depth throughout all seasons. The concentration is higher during the summer season. With regard spatial distribution, higher demersal fish aggregations have been detected near the West coast of Shinchang and especially near Chagwi-do. Pelagic fish aggregations were higher to the south of Chagwi-do during the spring season. Additionally, standing stock of demersal fish aggregations from the NASC data, TS function, and length-weight function of dominant species was estimated as follows: 3.2 ton (CV 21.8%) in December 2006, 17.9 ton (CV 21.6%) in April 2007, 30.8 ton (CV 17.8%) in June 2007, and 22.5 ton (CV 24.2%) in October 2007. The application of hydroacoustic methods offers a new approach to understanding spatiotemporal structure and estimate the biomass of demersal fish aggregations in the coastal area. And the results can be made up limitations of qualitative analysis through net and diving for fisheries resources survey in coastal area.

• 한국수산과학회지
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• 제43권5호
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• pp.551-556
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• 2010

The large jellyfish Nemopilema nomurai causes serious damage to fisheries, particularly around the seas of Korea and Japan. Decreasing this damage requires knowledge of the distribution and abundance of jellyfish. Acoustic technology using quantitative echosounders is one method of studying the distribution and abundance of jellyfish. Such methods are commonly used worldwide because they have the advantage of providing substantial information about all water layers in a wide area in a short time. However, in order to conduct an acoustic survey, the acoustic characteristics of the target organism must be known. These can be altered by a number of factors, including pulsation, swimming angle, frequency and size. Accordingly, this study determined the variation in target strength according to pulsation of N. nomurai. Data were analyzed for two jellyfish with bell diameters in air of (a) was 32.0 and (b) 25.0 cm. The pulsation cycle of jellyfish (a) was 1.5~2.0 sec and the target strength (TS) cycle was 1.0~2.5 sec, while jellyfish (b) had a pulsation cycle of 1.0~1.5 sec and TS cycle of 1.0~3.0 sec. The variation width of the TS with the change in pulsation was 7.8 dB (-72.4~-64.6 dB) for jellyfish (a) and 10.3 dB (-71.6~-61.3 dB) for jellyfish (b). The variation in bell diameter was about 0.28 and 0.35, respectively. These results confirmed that the variation in bell diameter caused by pulsation is closely related to the variation in TS.

• 대한공간정보학회지
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• 제15권3호
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• pp.87-96
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• 2007

현재 수치지적 시행 지역에서의 지적측량은 전자측판 측량을 이용하는데, 이는 측량부분에 토탈스테이션과 이로 취득된 좌표정보를 기록 편집을 위한 컴퓨터 시스템으로 구성되어 있다. 본 연구에서는 토탈스테이션을 대체하여 RTK-GPS 측량으로 경계점의 좌표를 취득하고 자료처리와 결선처리 등은 기존의 컴퓨터 시스템을 이용함으로써 수치지적측량의 효율성을 제시하고자 하였다. 연구결과, RTK-GPS측량 성과를 기존 전자측판(토탈스테이션)성과와 비교한 결과 거의 차이가 없었고, 소요시간과 소요인력을 분석한 결과 현행 토탈스테이션을 이용한 전자측판 측량보다 많이 줄일 수 있는 것으로 나타났다. 이외에도 전자측판 시스템을 이용하여 현장에서 자료처리 및 결선작업 등이 이루어질 수 있도록 함으로써 수치지적시행 지역에서 효율적인 측량방법이 될 수 있을 것으로 기대된다.

• Genomics & Informatics
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• 제17권1호
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• pp.7.1-7.10
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• 2019

Cysticercosis, a parasitic disease caused by Taenia solium metacestode (TsM), has a major global public health impact in terms of disability-adjusted life years. The parasite preferentially infects subcutaneous tissue, but may invade the central nervous system, resulting in neurocysticercosis (NC). NC is an important neglected tropical disease and an emerging disease in industrialized countries due to immigration from endemic areas. The prevalence of taeniasis in Korea declined from 0.3%-12.7% during the 1970s to below 0.02% since the 2000s. A survey conducted from 1993 to 2006 revealed that the percentage of tested samples with high levels of specific anti-TsM antibody declined from 8.3% to 2.2%, suggesting the continuing occurrence of NC in Korea. Modern imaging modalities have substantially improved the diagnostic accuracy of NC, and recent advances in the molecular biochemical characterization of the TsM cyst fluid proteome also significantly strengthened NC serodiagnosis. Two glycoproteins of 150 and 120 kDa that induce strong antibody responses against sera from patients with active-stage NC have been elucidated. The 150 kDa protein showed hydrophobic-ligand binding activities and might be critically involved in the acquisition of host-derived lipid molecules. Fasciclin and endophilin B1, both of which play roles in the homeostatic functions of TsM, showed fairly high antibody responses against calcified NC cases. NC is now controllable and manageable. Further studies should focus on controlling late-onset intractable seizures and serological diagnosis of NC patients infected with few worms. This article briefly overviews diagnostic approaches and discusses current issues relating to NC serodiagnosis.