• Journal of Veterinary Clinics
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• v.28 no.6
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• pp.595-597
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• 2011

A 5-year-old, intact male Beagle was presented with chronic abdominal pain. The dog was diagnosed with dirofilariasis by positive heartworm antigen detection via ELISA and concurrent microfilaria. Thoracic radiographs revealed cardiomegaly with dilation of the main pulmonary artery. Echocardiography revealed the adult worms in the main pulmonary arteries, but other abnormalities other than heartworm infection were not present. To find the cause of the abdominal pain, exploratory laparoscopy was performed. Ectopic migrating adult heart worms were visualized through exploratory laparoscopy and the clinical sign resolved after removing the heart worm. This report describes removing the ectopic migrating adult heartworms using exploratory laparoscopy in the abdominal cavity.

• Journal of Korean Society of Forest Science
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• v.85 no.4
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• pp.647-655
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• 1996

This paper examined the effects of users' expectations, norms and recreation motives on perceived conflict in a recreation setting. The study used data collected at Second Campground in Chirisan National Park, Korea, during the summer of 1994. Of the total 280 questionnaires distributed, 253 questionnaires(90.4%) were usable. About 82% of the respondents perceived conflict by others' late-night-singing. This study supported the notion that perceived conflict occurs when norms, expectations, and recreation motives are interfered with by others' incompatible behaviors. Solitude/nature motive factor was a better predictor of perceived conflict than norm-interference or expectation-interference. However, the relative predictability of each variable on perceived conflict could be various depending on different kinds of recreation motives, specific ways of measuring norms, expectations and conflict. Management implications were discussed.

• Journal of Veterinary Clinics
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• v.15 no.1
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• pp.104-109
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• 1998

고양이 말초혈액 다형핵백혈구(PMNC)의 유주성에 있어서 인삼 saponins(ginseng total ssponin(GTS), ginseng PT saponin(GfT) 및 ginseng PD saponin(GPD))의 면역증강 효과를 검토하였다. PMNC에 대한 유주성을 hoyden chamber 변법으로 측정한 결과, GTS, GPT, GPD는 PMNC에 대해 직접적인 유주활성을 나타내지 않았다. 또한 인삼 saponins을 첨가하여 배양한 PMNC 배양상충액의 경우게는 미약한 유주활성을 나타내었다. 그러나 GPf및 GPD를 첨가하여 배양한 말초혈액 단핵구세포(MNC)배양상충액에서는 PMNC의 유주활성이 현저하게 증가하였다. PMNC에 대해 유주활성이 인정된 GPI)로 배양한 MNC 배양상충액을 이용하여 checkerboard assay를 실시한 결과 배양상충액의 농도차에 의존하는 진의 유주활성임을 알 수 있었다. 이상의 결과로부터 인삼 saponine 중 GPT 및 GPD가 고양 이 말초혈액 다형핵백혈구의 유주성을 중강시키는 효과가 있으며, 이것은 이들 saponins에 의해 활성화된 단핵구세포에서 분비되는 유주성인자에 의해 다형핵백혈구의 유주활성이 증 강되는 것으로 사료되었다.

• 한국ITS학회:학술대회논문집
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• 2010.05a
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• pp.163-167
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• 2010

• The Journal of the Korea institute of electronic communication sciences
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• v.12 no.2
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• pp.255-260
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• 2017

In Korea, traffic accidents between pedestrians and vehicles in 2015 account for 38.8% of all accidents. This study proposes a system design that can measure the risk of conflict between a vehicle and a pedestrian. Firstly the systemdetect and estimate the position, speed, and directional data of the vehicle and the pedestrian. And then it estimate the conflict point between a vehicle and a pedestrian. The risk of conflict is quantified by estimating the pedestrian safety margin (PSM), which is the time difference between the arrival of the pedestrian at the crossing point to the point of conflict and the vehicle approaching the point. In this system each data is acquired through an external monitoring based evaluation module and an individual wearing module. In the future, such a system can be used for decision making such as the design of road hazard improvement facilities and the designation of the elderly protection area.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.10 no.6
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• pp.1-14
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• 2011

The surrogate safety assessment model which was developed based on the conflict theory by FHWA in the US is software to analyze traffic conflicts using the individual vehicle trajectory data from a microscopic traffic simulation model. This study aims at assessing the safety of different signal control strategies, including pre-time and actuated signal control, using the SSAM. To this end, this study effort has developed a microscopic traffic simulation model using VISSIM through a field study, and then produced the surrogate measures, including TTC, PET, DR, MaxS and DeltaS, and the numbers of conflicts, including rear-end, right angle and lane-changing conflicts. The assessment results indicated that the actuated signal control may produce more conflicts in terms of rear-end conflicts. The use of SSAM in the safety assessments for diverse traffic alternatives in a safe and fast way may contribute to the improvement of safety in the roadway transportation.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.7 no.5
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• pp.64-76
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• 2008

To increase road safety at blackspots, it is needed to develop a new method that can process before accident occurrence. Accident situation could result from traffic conflict. Traffic conflict decision technique has an advantage that can acquire and analyze data in time and confined space that is less through investigation. Therefore, traffic conflict technique is highly expected to be used in many application of road safety. This study developed traffic conflict decision program that can analyze and process from signalized intersection image. Program consists of the following functional modules: an image input module that acquires images from the CCTV camera, a Save-to-Buffer module which stores the entered images by differentiating them into background images, current images, difference images, segmentation images, and a conflict detection module which displays the processed results. The program was developed using LabVIEW 8.5 (a graphic language) and the VISION module library.

• Journal of Korean Society of Transportation
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• v.28 no.4
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• pp.7-18
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• 2010

This study analyzed the relative vehicle speed and vehicle deceleration time caused by traffic conflicts using vehicle speed data at expressway toll gates and traffic conflict occurrence data. According to the analysis, the greater the relative vehicle speed is at the toll gate, the more sudden vehicle deceleration occurs due to traffic conflicts. In particular, a comparison study of cases in similar operating conditions presents a finding that usage of lanes influences traffic conflict occurrences as well as relative vehicle speed. With this finding, the study further conducted a quantitative analysis of the accident rates in relation to the relative vehicle speed between vehicles using a "Hi-Pass" lane and a regular lane at the toll gate. It indicates that when the relative vehicle speed is greater, the accident rate is higher due to sudden vehicle deceleration and shorter deceleration time. Furthermore, when the expressway entrance/exit point is closely located to a toll gate and the relative vehicle speed is great, a analysis at a traffic conflict shows a low value.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.19 no.4
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• pp.30-44
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• 2020

The application of PPLT is difficult to analyze and judge only from the effects of the delay time. In this study, the application of PPLT was proposed using not only the delay time of PLT and PPLT due to the change in traffic volume and the number of opposite straight lanes but also the traffic volume of passing a left turn and the number of conflict risks as indicators. According to the analysis, the more left-turn traffic than capacity and the less opposite-straight volume, the greater the PPLT effect. On the other hand, if the left-turn traffic is below capacity, the delay time will be reduced partially, but the overall passing left turn volume will not increase, and the conflict risk will increase. In addition, the conflict risk increases in the third lane or higher. Moreover, the difference of passing left-turn volume between PLT and PPLT showed a pattern similar to the delay time difference, and the PPLT coverage was wider than the difference in delay time and was associated more with the conflict risk numbers. Therefore, it would be reasonable to use passing left-turn traffic primarily, consider the delay time below the left-turn capacity, and consider the conflicting risk numbers simultaneously at or above the opposite straight three lanes.

• Journal of Veterinary Clinics
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• v.22 no.4
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• pp.309-313
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• 2005

This study was performed to assess the efficacy of surgical treatment with flexible alligator forceps (FAF) on heartworm infected dogs. Twenty dogs (10 males and 10 females) with heartworm infection, age $5.3\pm3.0\;(mean{\pm}S.D.)$ years and weight $9.3\pm6.5(mean{\pm}S.D.)kg$ were treated with FAF. Adult heartworms were removed by fluoroguided technique with FAF under inhalation anesthesia with isoflurane. For evaluation of the efficacy, removal rate and surgical time were measured, and removal sites were found. Antigen ELISA kit test and autopsy were performed to examine remained adult heartworms. Removal rate of total heartworms was $91.4\%$ including 15 complete retrieval cases and surgical time was $30.0\pm7.6(mean{\pm}S.E.)$ minutes. Heartworms were removed from the right ventricle, main pulmonary artery, and right and left pulmonary artery. Surgical treatment with FAF is an effective method with high removal rate, short surgical time, and various removal sites and it could be considered for the removal of adult heartworms in a dog.