• Title/Summary/Keyword: 상충

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Understanding the Experience of Visual Change Detection Based on the Experience of a Sensory Conflict Evoked by a Binocular Rivalry (양안경합의 감각적 상충 경험에 기초한 시각적 변화탐지 경험에 대한 이해)

  • Shin, Youngseon;Hyun, Joo-Seok
    • Science of Emotion and Sensibility
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    • v.16 no.3
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    • pp.341-350
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    • 2013
  • The present study aimed to understand the sensory characteristic of change detection by comparing the experience of detecting a salient visual change against the experience of detecting a sensory conflict evoked by a binocular mismatch. In Experiment 1, we used the change detection task where 2, 4, or 6 items were short-term remembered in visual working memory and were compared with following test items. The half of change-present trials were manipulated to elicit a binocular rivalry on the test item with the change by way of monocular inputs across the eyes. The results showed that change detection accuracy without the rivalry manipulation declined evidently as the display setsize increased whereas no such setsize effect was observed with the rivalry manipulation. Experiment 2 tested search efficiency for the search array where the target was designated as an item with the rivalry manipulation, and found the search was very efficient regardless of the rivalry manipulation. The results of Experiment 1 and 2 showed that when the given memory load varies, the experience of detecting a salient visual change become similar to the experience of detecting a sensory conflict by a binocular rivalry.

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Hindlimb Lameness Secondary to Bilateral Femoral Artery Occlusion in a Dog with Systemic Arterial Dirofilariasis (전신성 동맥 사상충증에 이환된 개의 양측성 대퇴동맥의 폐쇄)

  • Choi, Woo-Shin;Song, Jin-Young;Lee, Young-Jae;Lee, Dong-Hoon;Kim, Ju-Hyung;Chang, Jin-Hwa;Kang, Ji-Houn;Chang, Dong-Woo
    • Journal of Veterinary Clinics
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    • v.29 no.4
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    • pp.334-338
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    • 2012
  • A 3-year-old, intact male Pungsan dog was presented for a 2-week history of a non-weight-bearing lameness of left hindlimb with anorexia. The dog had no history of trauma, and never been routinely vaccinated or treated with heartworm preventatives. The complete blood count showed severe leukocytosis and neutrophilia with left shift. Serum biochemistry showed hypoalbuminemia, azotemia, and increased hepatobilliary enzyme activity. A canine heartworm antigen test was positive. Thoracic radiographs were consistent with heartworm disease as evidences by main pulmonary artery enlargement, right-sided cardiomegaly, and interstitial lung pattern. Echocardiography revealed pulmonary valvular regurgitation and pulmonary hypertension. Selective femoral arterial angiogram was performed, and bilateral femoral arterial occlusion was identified. The dog died after angiogram, and necropsy was performed. At necropsy, adult heartworm and a large blood clot were found within the lumen of left and right femoral artery. This case report describes an unusual migration of heartworm to femoral artery that caused hindlimb lameness.

Prevalence-based Interpretation of Predictive Values of Diagnostic Tests: An Example for Detection of Canine Heartworm Infection (진단키트 검사결과에 대한 유병율 위주 해석: 개 심장사상충의 예)

  • Park, Choi-Kyu;Pak, Son-Il
    • Journal of Veterinary Clinics
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    • v.26 no.2
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    • pp.130-133
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    • 2009
  • The use of screening tests as part of a diagnostic work-up is common in domestic canine practice, but understanding of the diagnostic test characteristics and factors affecting diagnostic accuracy is not clear among clinicians. This article was aimed to provide clinicians with a better understanding on the selection of test kits and with a proper interpretation of test results using an example from heartworm(Dirofilaria immitis) studies. From the literatures, diagnostic accuracy varied depending on the kits: percent average sensitivity and specificity of ELISA antigen-detecting kits were DiroChek(Synbiotics, USA) 78.1 and 95.2, SNAP(IDEXX, USA) 66.3 and 98.1, and Solo Step(Heska, Switzerland) 69.5 and 97.5, respectively, while the values for three hematological methods(Modified Knott's, direct smear and capillary tube) ranged from 38.4 to 81.8% and from 96.9 to 100%, respectively. Furthermore, it was also reported that the prevalence of heartworm disease in domestic dog populations varied depending on the regions studied: 2.5-22.8% for microfilarial test and 2.2-66.3% by ELISA. The values of predictive values for positive(PPV) and negative(NPV) provide useful information to clinicians on the probability of heartworm infection, but the PPV and NPV are greatly dependent on the heartworm prevalence. This suggests that PPV or NPV values of a test should be interpreted carefully in different clinical settings. Practical methods on the interpretation taking into account heartworm prevalence were discussed.

Development of an Automated Model for Selecting Overlapping Areas of Marine Activity Zone using GIS (GIS를 활용한 해양활동공간 중첩구역 산출 자동화 모형개발)

  • KIM, Bum-Kyu;PARK, Yong-Gil;CHOI, Hyun-Woo;KIM, Tae-Hoon
    • Journal of the Korean Association of Geographic Information Studies
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    • v.25 no.3
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    • pp.59-73
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    • 2022
  • Currently, the conflict between use and conservation of the ocean is intensifying in the ocean, so it is essential to introduce an effective method to define and manage it in advance for each core value of ocean. Accordingly, although the ocean is divided into nine marine use zone and managed through marine spatial planning, the analysis of the sea areas where mutually exclusive activities overlap in the ocean is insufficient. In this study, an automated model was developed to derive a sea areas where the core values of the ocean conflict. In order to analyze marine activities, available data on marine activity were collected, and data necessity for the analysis of mutually exclusive marine activities were derived. After classifying the derived data into legal and characteristic data, a conflict matrix was prepared through pairwise comparison between data to designate priorities when overlapping occurs. Based on the designated priorities, an automation model was developed, and sea areas where marine activities conflicted were derived, visualized, and area calculated. Using this, it is judged that the efficiency of decision-making can be improved by clearly deriving the sea areas where major issues occur in establishing the marine spatial planning.

A Study on the Calculation of Dynamic Yellow Signal Time Based on Approach Speed and Collision Points (접근속도와 상충지점 기반 동적황색신호시간 산정 연구)

  • Hyunho Son;Sanghoon Sung;Choulki Lee;Hyeon Soo Lee
    • The Journal of The Korea Institute of Intelligent Transport Systems
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    • v.22 no.4
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    • pp.14-34
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    • 2023
  • The purpose of this study was to calculate the appropriate yellow-signal time for intersections, to find out the relationship between the approach speed and intersection width when calculating the time, and to secure safety by minimizing conflicts and dilemma sections in intersections that change according to the signal operation. For this purpose, 6,824 data points from 5 intersections were collected and analyzed. The main results of the study are as follows. First, the approach speed of individual vehicles in different lanes was analyzed, and the width of an intersection was defined by considering the conflict in each direction. Second, we developed a multiple regression model based on the approach speed and conflict points, which compensated for the problems of an existing formula. Third, a standard table is presented for applying the appropriate yellow-signal time according to the approach speed and intersection width based on a development formula. A method is also presented to determine the safety of the length of the dilemma according to the change in the yellow-light time by presenting a calculation table that can cross-analyze the yellow-signal time and a dilemma section using the relationship.