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PAN/PAAm 및 PAN/Copolymer(poly(AAm-co-AN)) 블렌드 섬유의 동적 점탄성 및 수축거동에 관한 연구
김호정,박차절,김한도,Kim, Ho-Jeong,Park, Cha-Jeol,Kim, Han-Do 한국섬유공학회 1994 한국섬유공학회지 Vol.31 No.9
Polyacrylonitrile(PAN)/polyacrylamide(PAAm) and PAN/copolymer(poly(AAm-co-AN)) blend fibers were prepared by solution spinning using nitric acid as a solvent. and stretched to 3, 5 and 7 of draw ratio. The effects of blend ratio and draw ratio on the viscoelastic and shrinking behavior of the fibers were investigated. The peak position of tan § related to Tg of PAH/copolymer fiber shifred towards higher temperature as the content of AN in AAm/AN composition of the copolymer is increased, while the tan 6-peak position of PAn/PAAm fiber has the same as that of pure PAN. The tan 6-peak temperature of PAN/topolymer fiber shifted to lower temperature with increasing draw ratio. The shrinkage of pure PAU, PAM/PAAm and PAN/copolymer fibers increased with increasing heat treating temperature and AN content in copolymers. but decreased with the increment of the draw ratio. It was concluded that the miscibility of the copolymer with PAN is better than that of PAAm and increased with increasing AW content of copolymer.
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김호정,이동관,Kim, Ho-Jeong,Lee, Dong-Gwan 한국군사과학기술학회 2006 한국군사과학기술학회지 Vol.9 No.4
The correct and opportune decision of reengaging the intercepted target is required in order to enhance the engagement performance of the surface to air missile systems that has the ability to defense or attack against various targets at the same time. The engagement efficiency and success of these systems will be largely enhanced by assigning quickly its system resources to the intercepted target and minimizing the waste of system resources for the target which is not able to attack any more. The kill-assessment algorithm has to be able to evaluate automatically whether various targets intercepted by missiles are killed or not on the basis of the reasonable confidence level. The definition of kill assessment is discussed and the kill assessment algorithm is designed reliably by using Kalman filter and a probability theory. Finally its performance is evaluated and analyzed by the Monte Carlo simulation.
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DEVS형식론을 적응한 HLA기반의 분산 실시간 시뮬레이션 시스템 개발
김호정,이재현,조길석,Kim, Ho-Jeong,Lee, Jae-Hyun,Cho, Kil-Seok 한국군사과학기술학회 2006 한국군사과학기술학회지 Vol.9 No.3
Weapon systems composed of several subsystems execute various engagement missions in distributed combat environments in cooperation with a large number of subordinate/adjacent weapon systems as well as higher echelons through tactical data links. Such distributed weapon systems require distributed real-time simulation test beds to integrate and test their operational software, analyze their performance and effects of cooperated engagement, and validate their requirement specifications. These demands present significant challenges in terms of real-time constraints, time synchronization, complexity and development cost of an engagement simulation test bed, thus necessitate the use of high-performance distributed real-time simulation architectures, and modeling and simulation techniques. In this paper, in order to meet these demands, we presented a distributed real-time simulation system based on High Level Architecture(HLA) and Discrete Event System Specification(DEVS). We validated its performance by using it as a test bed for developing the Engagement Control System(ECS) of a surface-to-air missile system. The proposed technique can be employed to design a prototype or model of engagement-level distributed real-time simulation systems.
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항균제 및 향료의 마이크로캡슐을 이용한 항균 · 방향섬유에 관한 연구 (1) - 항균제 / 향료의 마이크로캡슐화 -
김호정,박차철,김한도 ( Ho Jung Kim,Cha Cheol Park,Han Do Kim ) 한국의류학회 1996 한국의류학회지 Vol.20 No.3
Microcapsules containing 2,4,4`-trichloro-2-hydroxydiphenyl ether and perfumes were prepared by the coacervation using poly (vinyl alcohol) and crosslinking agents. Effects of dispersing agents, core materials, agitating speed and crosslinking agents on microcapsule size were investigated. The mean and deviation of microcapsule diameters decreased with increasing agitation speed. The diameters of microcapsules decreased with increasing dispering agent concentration at 6,000 rpm of agitation speed, but it was not changed at 10, 000 rpm. The dispering effect of PVA is better than that of gum arabic. The slight increase in the diameter of microcapsule was observed when the amount of core material was increased. As the amount of crosslinking agent was increased, the diameter of microcapsule was decreased.
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김호정(Ho Jeong Kim),윤미옥(Mi Ok Yun),이수정(Su Jung Lee),최현철(Hyun Chul Choi),김지영(Ji Young Kim),김인화(In Wha Kim),심창구(Chang Koo Shim),강신정(Shin Jung Kang) 한국약제학회 2002 Journal of Pharmaceutical Investigation Vol.32 No.2
A method that describes the determination of the in vitro release of ketoprofen from gels was suggested. The experimental system of the method consists of a Franz diffusion cell, which contains a pH 7.4 phosphate buffer as a receptor medium, and a 70 μm mesh woven nylon membrane as a diffusion barrier. Under the given condition of the system, the diffusion of ketoprofen across the membrane was rapid enough that the apparent release profile of ketoprofen obtained from the present method could represent the release of the drug from gel preparations. The release of ketoprofen in the present method was reproducible, and the rate increased in proportion to the concentration of ketoprofen in the gel. These suggest that the present method is applicable to the quality evaluation of gel preparations containing ketoprofen.
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김선희(Sunhee Kim),이주영(Jooyoung Lee),최서경(Seo Gyeong Choi),지승훈(Seunghun Ji),강지민(Jeemin Kang),김종인(Jongin Kim),김도희(Dohee Kim),김보령(Boryoung Kim),조은기(Eungi Jo),김호정(Hojeong Kim),장정민(Jungmin Jang),김준형(Jun Hyung 한국음성학회 2020 말소리와 음성과학 Vol.12 No.4
본 논문은 응급의료 환경에서 음성인식 성능을 향상시키기 위하여 실제 환경에서 데이터 수집 방법을 정의하고 정의된 환경에서 수집된 데이터를 전사하는 방법을 제안한다. 그리고 제안된 방법으로 수집되고 전사된 데이터를 이용하여 기본 음성인식 실험을 진행함으로써 제안한 수집 및 전사 방법을 평가하고 향후 연구 방향을 제시하고자 한다. 모든 음성은 기본적으로 16비트 해상도와 16 kHz 샘플링으로 저장되었다. 수집된 데이터는 총 166건의 대화로서 8시간 35분의 분량이다. 수집된 데이터는 Praat를 이용하여 철자 전사, 음소 전사, 방언 전사, 잡음 전사, 그리고 의료 코드 전사를 수행하여 다양한 정보를 포함한 텍스트 데이터를 구축하였다. 이와 같이 수집된 데이터를 이용하여 기본 베이스라인 실험을 통하여 응급의료 영역에서의 음성인식 문제를 실제로 확인할 수 있었다. 본 논문에서 제시한 데이터는 응급의료 영역의 1단계 데이터로서 향후 의료 영역에서의 음성인식 모델의 학습 데이터로 활용되고, 나아가 이 분야의 음성기반 시스템 개발에 기여할 수 있을 것으로 기대된다. This paper describes a method of building Korean conversational speech data in the emergency medical domain and proposes an annotation method for the collected data in order to improve speech recognition performance. To suggest future research directions, baseline speech recognition experiments were conducted by using partial data that were collected and annotated. All voices were recorded at 16-bit resolution at 16 kHz sampling rate. A total of 166 conversations were collected, amounting to 8 hours and 35 minutes. Various information was manually transcribed such as orthography, pronunciation, dialect, noise, and medical information using Praat. Baseline speech recognition experiments were used to depict problems related to speech recognition in the emergency medical domain. The Korean conversational speech data presented in this paper are first-stage data in the emergency medical domain and are expected to be used as training data for developing conversational systems for emergency medical applications.
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김재명(Jae Myoung Kim),원종현(Jong Hyeon Won),김정한(Jung Han Kim),추길연(Gil Yen Choo),박석오(Suk O Park),김택수(Taek Soo Kim),천대철(Dae Chul Chun),성상규(Sang Kyu Sung),안장훈(Jang Hun Ann),김호정(Ho Jung Kim),최대섭(Dae Sub Choi) 대한내과학회 1994 대한내과학회지 Vol.47 No.4
Mucoepidermoid carcinoma arising in the liver is a rare malignant tumor which reported only about 10 cases to date, Several terms, such as adenosquamous carcinoma, adenoacanthoma, and mucoepidermoid carcinoma, have been used for carcinomas containing both adenomatous and squamous elements. Most of mucoepidermoid carcinoma have been reported in the salivary gland of primary site, but this tumor can also arise in many other regions of the body, such as lung, esophagus, pancreas, uterus, bladder, anus and etc. Mucoepidermoid carcinoma of the liver morphologically resembles that of the salivary gland. His- tologically, this tumor consists of mixture of squamous cells, mucus-producing cells, and intermediate cells. Intercellular bridges and keratinization are also present in the epidermoid area of the tumor. We experienced a case of mueoepidermoid carcinoma arising in the liver of 68-year-old man. The tumor, measuring about 10×10 cm sized, was noted in left lobe of the liver with invasion to adjacent organs. The exploratory laparotomy was done and we obtained tissue from the tumor nodule protruding to the liver surface. Microscopically, this tumor revealed squamous element and intermingled mucoid element. And intercellular bridges and keratinization were noted in the epidermoid area. So we report this case of mucoepidermoid carcinoma of the liver with a literature review.
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비장을 침범하여 비장낭종으로 자라난 췌장의 점액성 낭선암 1 예
김기훈(Ki Hun Kim),박성호(Sung Ho Park),서호종(Ho Jong Seo),최진욱(Jin Wook Choi),김광석(Kwang Seok Kim),고성만(Sung Man Go),서광섭(Kwang Seop Seo),김홍자(Hong Ja Kim),김호정(Ho Jung Kim),강유미(Yoo Mee Kang) 대한소화기학회 2001 대한소화기학회지 Vol.38 No.6
Mucinous cystic neoplasms of the pancreas are rare primary tumors. They are low-grade tumors that occur predominantly in middle-aged woman. They usually arise within the tail of the pancreas and manifest as large, multiloculated cystic masses. In most cases, they are confined to the tail or body of the pancreas. All mucinous cystic neoplasms should be considered as mucinous cystadenocarcinomas of low-grade malignant potential. Complete surgical excision alone results in an excellent clinical outcome. We experienced a case of mucinous cystadenocarcinoma of the pancreas with invasion to the spleen in a 66-year-old woman. The mucinous cystadenocarcinoma involving the spleen is extremely rare and there has been no case report in Korea. Distal pancreatectomy and splenectomy was performed. It was concluded that multiloculated cyst developed from pancreatic tail and manifested as a huge splenic cyst. We report this rare case with a review of literature.(Korean J Gastroenterol 2001;38:453-456)
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