• International Journal of Fuzzy Logic and Intelligent Systems
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• 제12권1호
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• pp.60-65
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• 2012

This paper presents a method for occluded object based motion estimation and tracking system in dynamic image sequences using particle filter with 3D reconstruction. A unique characteristic of this study is its ability to cope with partial occlusion based continuous motion estimation using particle filter inspired from the mirror neuron system in human brain. To update a prior knowledge about the shape or motion of objects, firstly, fundamental 3D reconstruction based occlusion tracing method is applied and object landmarks are determined. And optical flow based motion vector is estimated from the movement of the landmarks. When arbitrary partial occlusions are occurred, the continuous motion of the hidden parts of object can be estimated by particle filter with optical flow. The resistance of the resulting estimation to partial occlusions enables the more accurate detection and handling of more severe occlusions.

• 한국인터넷방송통신학회논문지
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• 제13권6호
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• pp.109-114
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• 2013

낮은 저항이나 좋은 전기투과도 지점으로 알려진 생물학적 활성점(biological active points, BAP)인 BAP검출을 위한 새로운 방법으로 적응주파수추적필터와 과도이벤트검출을 기반으로 하는 생체임피던스측정시스템을 사용하는 방식에 대해 제안하였다. 이 생체임피던스장치에 다중주파수 전류주입과 전압측정 모두 표면전극을 사용하였다. 또한 마이크로컨트롤러를 통하여 적응주파수추적필터를 사용한 다중주파수요소에 의해 변조된 신호의 연속적인 복조를 처리하였다. 또한 위상공간방식의 과도이벤트검출방식이 제안된 BAP등가모델에 각주파수에 대해 적용되었다.

• 전자공학회논문지A
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• 제33A권6호
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• pp.127-135
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• 1996

To increase the sensitivity and the selectivity of the sensors to TMA gas, the composition ratio and the growth conditions of the ZnO films are studied. Annealing of the ZnO films in the various time ranges and temperatures in the oxygen is carried out to enhance the stbility of the electrical resistance. Pt/Ti heater deposited on backside of the substrates in used to control the operating temperature of th esensor. The ZnO thin film sensors doped to 4.0 wt% $Al_{2}$O$_{3}$ 1.0wt.% TiO$_{2}$ and 0.2wt.% V$_{2}$O$_{5}$ exhibited a high sensitivity and an excellent selectivity for TMA gas. The sensors made with the thin films annealed at 700$^{\circ}$C for 60 minutes in the oxygen atmosphere had a good stability and linearity. The heater deposited in the ratio of 1 to 1 (Pt:Ti) had a good heating properties. The sensors fabricated using above conditions showed a good response to the actual gases of a mackerel at a step of deterioration after death.

• 원예과학기술지
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• 제35권2호
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• pp.149-164
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• 2017

Next generation sequencing (NGS) technologies have led to the rapid accumulation of genome sequences through whole-genome sequencing and re-sequencing of crop species. Genomic resources provide the opportunity for a new revolution in plant breeding by facilitating the dissection of complex traits. Among vegetable crops, reference genomes have been sequenced and assembled for several species in the Solanaceae and Cucurbitaceae families, including tomato, pepper, cucumber, watermelon, and melon. These reference genomes have been leveraged for re-sequencing of diverse germplasm collections to explore genome-wide sequence variations, especially single nucleotide polymorphisms (SNPs). The use of genome-wide SNPs and high-throughput genotyping methods has led to the development of new strategies for dissecting complex quantitative traits, such as genome-wide association study (GWAS). In addition, the use of multi-parent populations, including nested association mapping (NAM) and multiparent advanced generation intercross (MAGIC) populations, has helped increase the accuracy of quantitative trait loci (QTL) detection. Consequently, a number of QTL have been discovered for agronomically important traits, such as disease resistance and fruit traits, with high mapping resolution. The molecular markers for these QTL represent a useful resource for enhancing selection efficiency via marker-assisted selection (MAS) in vegetable breeding programs. In this review, we discuss current genomic resources and marker-trait association analysis to facilitate genome-assisted breeding in vegetable species in the Solanaceae and Cucurbitaceae families.

• 센서학회지
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• 제27권4호
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• pp.221-226
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• 2018

Misfueling accidents significantly damage the engines of both gasoline and diesel vehicles, and should be avoided by rapid and accurate fuel discrimination. Gasoline fuel contains bioethanol. Thus, the detection of ethanol vapor produced by gasoline can be used to distinguish between gasoline and diesel. In the present study, Pt-doped $SnO_2$ hollow nanospheres, Mg-doped $In_2O_3$ hollow microspheres, and Pt-doped ZnO nanostructures have been used as gas sensors to discriminate between gasoline and diesel fuels. All three sensors are able to detect and discriminate between gases evaporating from gasoline and diesel. Among the sensors, the Mg-doped $In_2O_3$ hollow microspheres show a significant gas response (resistance ratio = 4.97) quickly (~3 s) after exposure to gasoline-evaporated gas at $225^{\circ}C$, but did not show any substantial response to diesel-evaporated gas. This demonstrates that gasoline and diesel fuels can be discriminated using small and cost-effective oxide semiconductor gas sensors.

• Clinical and Experimental Pediatrics
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• 제48권2호
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• pp.216-220
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• 2005

폐동정맥루는 폐동맥 고혈압의 유무에 따라 치료가 달라진다. 따라서 폐동정맥루 치료 전 반드시 폐동맥압을 측정하여야 한다. 이에 저자들은 폐동맥 고혈압이 없어 폐동맥 색전술로 치료한 1례와 폐동맥 고혈압이 동반되어 항응고제를 투여하면서 관찰 중인 1례를 보고하는 바이다.

• 대한의용생체공학회:학술대회논문집
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• 대한의용생체공학회 1997년도 추계학술대회
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• pp.471-474
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• 1997

Recently, many studies have shown clinically the detection of proximal arterial stenosis through evaluation of a Doppler waveform alternation, the so-called pulsus tardus and parvus, that often occurs distal to the stenosis. However the cause of the tardus-parvus phenomenon remains obscure. To analyze its cause, we modeled the blood-flow circuit as simple electrical circuit. This shows that pulsus tardus-parvus effect is caused as a result of high-frequency waveform component attenuation from low-pass filtering by capacitance(complience of the poststenotic vessel wall) and resistance(stenosis). As a result, the degree of pulsus tardus-parvus increased as the complience of the poststenotic segment of vessel increased, as well as increasing stenosis.

• 한국동물위생학회지
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• 제33권3호
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• pp.255-261
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• 2010

At the present study, it was aimed to explore the states of antimicrobial resistant Staphylococcus aureus isolates from 320 pigs and cattle carcass (160 pigs and 160 cattle) slaughtered in Busan province from March 2008 to November 2009. Among 320 samples, 26 of Staphylococcus aureus were isolated from pigs (10.6%) and cattle (5.6%). In antimicrobial susceptibility test, all of the isolates were demonstrated susceptibility to oxacillin, cefoxitin, cephalothin, vancomycin, rifampin and linezolid. But the isolates were showed resistance other antibiotics in order of penicillin (92.3%), gentamicin (76.9%), tetracycline (69.2%), erythromycin (65.4%), and clindamycin (61.5%). In case of enterotoxin production, 7.7% of 2 strains produced enterotoxin A.

• 한국동물위생학회지
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• 제33권3호
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• pp.263-269
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• 2010

The antimicrobial susceptibility of 73 strains of Staphylococcus aureus isolated from dogs and cats was determined against 16 antimicrobial agents. All isolates were susceptible to cephalothin (CF), vancomycin (VA), rifampin (RA), quinupristin-dalfopristin (SYN) and linezolid (LZD), whereas more than 86.3% of the isolates were resistant to penicillin (P). In the case of enterotoxin production, 8.2% of 73 strains produced enterotoxin A and 1 strain produced enterotoxin C. Appropriate protocols for antimicrobial agents and strategies to reduce antimicrobial resistance will need to be investigated in the future.

• 대한임상검사과학회지
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• 제46권4호
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• pp.136-139
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• 2014

Methicillin-resistant Staphylococcus aureus (MRSA) is one of the severe nosocomial infectious agents. The traditional diagnostic methods including biochemical test, antibiotic susceptibility test and PCR amplification are time consuming and require much work. The Surface enhanced Raman spectroscopy (SERS) biosensor is a rapid and powerful tool for analyzing the chemical composition within a single living cell. To identify the biochemical and genetic characterization of clinical MRSA, all isolates from patients were performed with VITEK2 gram positive (GP) bacterial identification and Antibiotic Susceptibility Testing (AST). Virulence genes of MRSA also were identified by DNA based PCR using specific primers. All isolates, which were placed on a gold coated nanochip, were analyzed by a confocal Raman microscopy system. All isolates were identified as S. aureus by biochemical tests. MRSA, which exhibited antibiotic resistance, demonstrated to be positive gene expression of both femA and mecA. Furthermore, Raman shift of S. aureus and MRSA (n=20) was perfectly distinguished by a confocal Raman microscopy system. This novel technique explained that a SERS based confocal Raman microscopy system can selectively isolate MRSA from non-MRSA. The study recommends the SERS technique as a rapid and sensitive method to detect antibiotic resistant S. aureus in a single cell level.