• Journal of the Korean Institute of Navigation
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• v.16 no.1
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• pp.14-35
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• 1992

The recently-developed automated vessels require a system which evaluates the operating conditions of the ship at present position from weather information as well as sensors ; forecasting the operations condition in the state to come in foreseeable future ; and suggests the optimum course and speed for ship's safety. According to a study, deck wetness, propeller racing, slamming. rolling, vertical acceleration, lateral acceleration, vertical bending moment at midship etc. were chosen as the factors for evaluating seakeeping performance. As a matter of act, there is no developing the hardware of a system which could consider all the factors on seakeeping performance. This study introduces a theoretical method which makes it possible to evaluate the seakeeping performance by applying a theory from reliability engineering, and thereby establishing a safety space. The author adopts rolling and pitching as the factors on seakeeping performance by clarifying the correlation of stochastic processes the factors presently adopted for evaluation system in consideration of the safety of human being, cargoes and the ship. This method of evaluation shall be of much use in developing the practical system of seakeeping performance of a ship in waves.

• Journal of Veterinary Clinics
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• v.34 no.2
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• pp.132-134
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• 2017

Streptococcus equi subsp. equi which is a Gram-positive bacteria causes strangles a highly contagious disease that affects the respiratory system of the horse. The disease is characterized by fever, nasal discharges and enlargement of the lymph nodes in the head and upper neck region. This study was performed to monitor the level of serum strangles antibody titers of horses in Jeju. A total of clinically healthy 122 horses (41 horses less than 5 months, 81 horses more than 1 years old) were included in this study. Serum antibody titers against strangles were measured by means of Passive haemagglutination (PHA) titers. As the results, the level of foals was definitely low. The results of this study have shown that there is a need to consider the vaccination against strangles infection at foals.

• Korean Journal of Pharmacognosy
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• v.36 no.3 s.142
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• pp.252-256
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• 2005

The in visto inhibitory activities of essential oils of the Rosmarinus officinalis as well as its main constituents were evaluated against antibiotic-susceptible and -resistant strains of Staphylococcus aureus, streptococcus pneumoniae, Salmonella enteritidis and S. typhimurium. The essential oil fraction of R. officinalis and its main components, 1,8-cineole and camphor, exhibited significant inhibitory activities against most of the tested strains in this study, with MICs(minimum inhibitory concentrations) racing from 0.5mg/ml to 16mg/ml. The total oil fraction showed higher activity than its main components, 1,8-cineole and camphor against S. aureus strains. No remarkable differences were evident between MICs of the susceptible and resistant strains of S. aureus. Among the tested strains, S. pneumoniae CCARM 3523, the resistant strain to norfloxacin, oxacillin and erythromycin exhibited significantly lower sensitivity to the tested oils than antibiotic-susceptible strain. The oils revealed mostly higher inhibitory activity against S. typhimurium than against S. enteritidis.

• Journal of Veterinary Clinics
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• v.35 no.1
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• pp.22-25
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• 2018

A 7-year-old, 453 kg, thoroughbred-cross mare showed depression, severe nasal bleeding, diffuse swelling, and distortion of the facial contour. Physical and radiographic examinations revealed an open nasal bone fracture. Surgery was conducted under sedation with the horse in a standing position. Two holes were drilled directly above and below the fracture line. The nasal bone was raised to the normal position by inserting a periosteal elevator through the holes. Orthopedic wire was used to secure the fractured nasal bones through the holes. The horse recovered from sedation without complication. Sutures were removed three weeks after surgery. The nasal bone fracture appeared well-recovered morphologically and the recovery was confirmed by radiography. A wire fixation method is recommended to treat nasal bone fracture in a horse.

• Journal of Veterinary Clinics
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• v.38 no.5
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• pp.225-230
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• 2021

A 4-year-old gelding Thoroughbred racehorse, which had been undergoing antibiotic therapy at a local veterinary clinic, was referred to the KRA veterinary center with a 20-day history of continuous right nasal discharge. Patient's history, endoscopic examination, and radiographic examination revealed primary maxillary sinusitis. Under sedation, surgical intervention was performed to collect samples and remove the accumulated mucopurulent exudate in the sinus. Swab samples were collected from the sinus during surgery for cytology and antimicrobial susceptibility testing. Only one type of bacteria was cultured, and molecular analyses of 16S ribosomal RNA gene sequences identified it as Staphylococcus aureus (S. aureus). The isolate was resistant to multiple antibiotics, which are frequently used in equine practice. Trimethoprim-sulfamethoxazole was chosen based on antibiotic susceptibility test, trephination, and sinus lavage using saline were applied to treat bacterial sinusitis. The clinical signs improved after 1 month and the patient resumed training. This report describes S. aureus isolated from bacterial maxillary sinusitis in a horse and its antibiotic susceptibility.

• Proceedings of the Korean Society of Computer Information Conference
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• 2022.07a
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• pp.15-16
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• 2022

본 논문에서는 국내 합법 사행산업의 가장 큰 비중을 차지하는 경마에 대한 데이터 분석 모델을 제공하여 건전한 국민 여가 스포츠로 인식 개선을 제안한다. 고배당을 강조하는 경마 예측론이 성행하며 경마가 스포츠가 아닌 도박에 가깝다는 부정적 이미지를 개선하고자 부모마의 수득 상금을 이용한 순위 분석 모델을 제공한다. 현재 국내 경마 경기는 서울, 부산, 제주에서 개최되며, 이 중 서울 지역 경마 데이터를 분석 데이터로 하였다. 분석에 이용한 데이터는 2019년 3월부터 2022년 3월까지의 경주 성적, 경주마 정보, 부모마 수득상금을 이용하였다. 분석에는 선형 회귀 모형, 랜덤 포레스트 회귀 모형 (Breiman, 2001)을 이용하였다. 분석은 Python 을 이용하였으며, Python에서 제공하는 다양한 라이브러리를 이용하여 크롤링, 전처리, 분석하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2022.11a
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• pp.800-802
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• 2022

최근 성인들을 위한 '키덜트 장난감'의 관심도가 증가하고 있다. 그중 높은 매출을 보이는 RC 카와 VR 의 콘텐츠 부족 및 대중화 문제를 해결하면 시장규모를 성장시킬 수 있다고 판단한다. 본 논문은 차별화된 RC 카 레이싱 게임 개발을 목표로 한다. 스마트폰용 VR 기기를 착용해 영상을 보며 컨트롤러로 RC 카를 조종한다. 또한 실시간 객체 검출이 가능한 YOLOv5 를 활용해 표지판 인식 및 바운딩 박스, 표지판 라벨, 라벨 음성 출력 기능과 오픈 소스 기반 실시간 컴퓨터 비전인 OpenCV 기반 알고리즘을 활용하여 차선을 인식해 이를 기반으로 영상 처리를 거쳐 가상 차선 및 가상 트랙을 출력한다. 결론적으로 RC 카와 VR 로 구현하여 이를 통해 부족한 VR 컨텐츠를 추가하고 접근성을 강화한다.

• Journal of Veterinary Science
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• v.24 no.6
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• pp.87.1-87.9
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• 2023

Background: Equine squamous gastric disease (ESGD), as part of the equine gastric ulcer syndrome (EGUS), are common in racing horses. The use of buffering feed supplements to treat and/or prevent gastric ulcers is an option to control this condition. Objective: The purpose of this study was to evaluate the effect of a 30-day supplementation with a blend of magnesium oxide (MgO) on ESGD scores in trotters under training. Methods: Forty-two young trotters were submitted to a gastroscopic evaluation to assess their ESGD score and were randomly assigned in a group supplemented with MgO or in a control group. After 30 days, a second evaluation by gastroscopy was performed. The effect of the MgO supplementation was assessed by comparing the evolution of the ESGD score in supplemented and control groups between day 0 and day 30. Results: The results confirm the high prevalence of EGUS in young Trotters. The supplementation significantly decreased the ESGD scoring in the supplemented group whereas the control group remain unchanged. Conclusion: The oral MgO supplementation was efficient to control ESGD in the population studied.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.910-912
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• 2023

본 논문은 말의 개체 식별 과정에 딥러닝을 활용하여 객관적으로 식별 가능한 개체의 특징을 획득할 수 있는 영상처리 기반의 말 개체 식별 자동화 프레임워크를 제안한다. 제안하는 프레임워크는 말의 개체 식별을 위한 이미지 촬영 방법, 딥러닝을 활용한 말의 특징 추출 방법, 말 객체에 대한 식별 가능 정보의 변환 방법으로 구성되어 있으며, 본 논문에서 제시하는 방법론을 바탕으로 말 개체 식별 과정을 자동화하여 말의 특징을 객관적이고 효율적으로 추출하여 말 개체 관리를 하고자 한다.

• Mass Spectrometry Letters
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• v.14 no.3
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• pp.104-109
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• 2023

Anabolic-androgenic steroids (AAS) are used illegally to enhance muscle development and increase strength and power. In this study, a reliable, and sensitive quantitative method was developed and validated using heptafluorobutyric acid anhydride (HFPA) derivatives for the simultaneous detection of prohibited AAS (testosterone [TS], boldenone [BD], 5α-estrane-3β,17α-diol [EAD]) using gas chromatography-tandem mass spectrometry (GC-MS/MS). For processing the samples, solid phase extraction, methanolic hydrolysis, and liquid-liquid extraction were used. For detection using mass spectrometry, the multiple reaction monitoring (MRM) mode was used with the electron ionization (EI) positive mode. The method was evaluated for selectivity, linearity, lower limit of quantification, intra- and inter-day precision, accuracy, and stability. The results showed that the method was accurate and reproducible for the quantitation of the three steroids. The developed method was finally applied to the analysis of a suspect gelding urine sample received from the Asian Quality Assurance Program (AQAP).