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이질의 분산 환경에서의 IDL에 대한 C++언어 바인딩
황재웅 陸軍士官學校 1997 한국군사학논집 Vol.53 No.-
본 논문에서는 이질의 분산환경(Heterogeneous Distributed Environment)에서 프로그래밍을 용이하게 하는 C++클래스 라이브러리를 소개하였으며, 이 클래스 라이브러리를 이용하여 IDL(인터페이스 정의 언어: Interface Definition Language)에 대한 C++ 언어바인딩을 정의하였다. 이와 같은 바인딩은 데이터의 조작 (manipulation)과 변환(conversion)에 대한 세부 번역(translation)없이 임의의 응용 프로그램 차원의 IDL 선언문을 쉽게 C++로 번역 가능하게 한다. 이렇게 번역된 코드는 일반적인 C/C++ 프로그래밍 환경에 익숙한 사용자가 쉽게 사용할 수 있으며, 이 번역은 클래스 라이브러리가 제공하는 기능을 사용하는 고차원의 체계적인 정의이다. 이 클래스 라이브러리를 사용하여, 이질의 분산환경하에서 정보처리의 상호운용(interoperability)이 가능하다.
재태주령 34주 이전에 출생한 미숙아에서 병원도착시점에서 분만까지 소요된 시간과 뇌성마비 발생과의 관련성
황재웅,허아름,구수현,이해정,이준화,이주석,조경래 대한소아청소년과학회 2009 Clinical and Experimental Pediatrics (CEP) Vol.52 No.11
목 적:34주 이하로 출생한 미숙아에서 병원도착시점에서 분만까지 소요된 시간이 짧은 경우 향후 뇌성마비 발생과 관련이 있는지 알아보고자 하였다. 방 법:34주 이하의 미숙아 142례를 대상으로 하였다. 산모의 내원시점에서 분만까지 소요된 시간(소요시간)을 측정하였고 한국형 영유아 발달 검사 및 신경학적 검사를 통해 뇌성마비를 진단하여 분만에 소요된 시간과 뇌성마비 발생과의 상관관계 여부를 알아보았다. 결 과:병원 도착시점에서 분만에 이르는 시간이 짧으면 짧을수록 조대운동 발달지수가 낮아지고 뇌성마비의 발현빈도가 높아지는 경향을 보인 기본적인 결과 외에 1분 및 5분 Apgar 점수가 모두 작아지는 경향을 보였고 분만까지 소요된 시간이 짧을수록, 특히 분만에 소요된 시간이 6시간 이내인 경우 RDS의 발생가능성이 높은 것으로 나왔으며 제태기간이 짧을 가능성이 높은 것으로 나왔다. 그러나 다인자 분석에서 소요시간은 뇌성마비 발생에 영향을 주지 못하는 것으로 나왔다. 결 론:34주 이하로 출생한 미숙아에서 병원도착시점에서 분만까지 소요된 시간은 뇌성마비의 발생에 영향을 주지 못하는 것으로 나왔다. 그러나 본 연구에서는 급박하게 이루어진 분만이 뇌성마비 발생에 영향을 줄 수 있는 가능성에 접근하는 결과를 보여 향후 추가적인 연구가 있어야 할 것으로 사료된다. Purpose:This study aimed to evaluate whether a shorter time from the arrival at a hospital to delivery is related to the occurrence of cerebral palsy in premature infants of less than 34 weeks of gestational age. Methods:We studied 142 newborns of less than 34 weeks of gestational age. The time from the arrival at the hospital to delivery was measured. The correlation between the time required for delivery and the occurrence of cerebral palsy was elucidated by diagnosing cerebral palsy in neonates using the Korean Infant Development Screening Test and neurological examination. Results:Preliminary result suggested that a shorter time from hospital arrival to delivery was related to a lower development score for gross motor activity and to a higher frequency of cerebral palsy occurrence. Moreover, it was responsible for a tendency of obtaining lower Apgar scores at 1 and 5 minutes. The shorter delivery time was associated with a higher probability of respiratory distress syndrome (RDS) occurrence when the length of delivery time was less than 6 hours and there was a higher probability of a shorter gestation period. However, the multifactor analysis revealed that there was little impact of delivery time on the occurrence of cerebral palsy. Conclusions:The length of hospital arrival time to delivery did not significantly influence the occurrence of cerebral palsy in premature infants of less than 34 weeks of gestational age.
황재웅,권상주 한국반도체디스플레이기술학회 2011 반도체디스플레이기술학회지 Vol.10 No.4
In this paper, suggested is a hybrid-type visual alignment system to align mask and panel in 3-D space, where mask and panel are to be controlled independently by two individual positioning mechanisms in order to compensate for spatial misalignments. In the hybrid visual alignment system, the below 4-PPR parallel mechanism provides in-plain motions to pattern mask like the other conventional alignment systems while the above 4-RPS parallel mechanism is to move glass panel to achieve a complete spatial alignment. For the control of the hybrid alignment system, first, inverse kinematic solutions for the parallel mechanisms are given to determine the driving distance of each active joint, and also an efficient way to determine the spatial alignment error is developed by exploiting three in-plane cameras.
TOMO 치료 시 체온 유지를 위한 물질 사용에 따른 조직 내 선량 변화 평가
황재웅,정도형,김대웅,양진호,최계숙,Hwang, Jae-Woong,Jeong, Do-Hyeong,Kim, Dae-Woong,Yang, Jin-Ho,Choi, Gye-Suk 대한방사선치료학회 2010 대한방사선치료학회지 Vol.22 No.2
Purpose: TOMO therapy treatment for a relatively long run Beam time and temperature-sensitive detector, such as CT clinics in optimal temperature ($20~21^{\circ}$) to maintain a constant temperature in addition to its own Chamber Cooling system is activating. TOMO This clinic has been reduced in the patients' body temperature to keep the sheets and covers over the treated area. Therefore, these materials for any changes in the organization gives the dose were analyzed. Materials and Methods: To compare changes in the organization Dose Phantom cheese (Cheese Phantom) were used, CT-simulation taking the center point of the cheese phantom PTV (Planning Target Volume, treatment planning target volume) by setting Daily dose 200 cGy, 3 meetings planned treatment. PTV, PTV +7 cm, PTV +14 cm, the total count points on the phantom using the Ion chamber cover without any substance to measure the dose, and one of the most commonly used treatment, including the frequently used four kinds of bedding materials (febric 0.8 mm, gown 1.4 mm, rug, 3.3 mm, blanket 13.7 mm) and covered with a phantom and the dose measured at the same location were analyzed 3 times each. Results: PTV, PTV +7 cm, PTV +14 cm from the point of any substance measured in the state are covered with four kinds of materials (fabric, gown, rug, blanket) was measured in the covered states and compares their results, PTV respectively -0.17%, -0.44%, -0.53% and -0.9% change, PTV +7 cm, respectively -0.04%, +0.07%, +0.06%, +0.07%, were changed, PTV +14 cm, respectively 0%, -0.06%, -0.02%, +0.6%, respectively. Conclusion: These results TOMO treatment to patients to maintain their body mass by using PTV thickness of the material decreased in proportion to. PTV +7 cm, but showed slight changes in the point, PTV +14 cm at the point of the dose was increased a little. Sejijeom all the difference in treatment tolerance ${\pm}3%$ range, this is confirmed in the coming treatment will not affect the larger should be considered.
후방연장 국소의치에서 지대치의 splinting에 따른 치주조직의 응력 변화에 관한 유한요소법적 연구
황재웅,장익태,김광남,Hwang, Jae-Woong,Chang, Ik-Tae,Kim, Kwang-Nam 대한치과보철학회 1995 대한치과보철학회지 Vol.33 No.2
Splint therapy, the immobilization of teeth, has been done for patient's masticatory comforts and an adjunctive aid in periodontal therapy. Mandibular premolars are frequently splinted in many distal extension removable partial denture cases. But splinting is an extensive restoration that may not be conservative of tooth structure and may prove to be quite costly to the patient. The two dimensional finite element analysis method was used to determine the magnitude and mode of distribution of the stresses of the periodontal ligament and supporting alveolar bone when abutments with different periodontal supports were splinted and distal-extension removable partial denture was subjected to different loading schemes. The results were as follows : 1. When abutments were splinted, stresses moved from apico-distal to apico-mesial of terminal abutment on a vertical force and from disto-alveolar crest to apex on a distally directed force. But stresses were generally diminished on a mesially directed force. 2. As vertical bone loss was proceeding, most of stresses were transmitted to residual ridge and the rest of stresses were concentrated on apex of distal abutment. But these apical stresses were minimized when abutments were splinted. 3. As mesially inclined bone loss was proceeding, it seemed to be dangerous that many stresses were concentrated on the distal alveolar crest, especially in the distally directed load case. Abutments splinting decreased the alveolar crestal stresses but not enough. 4. For all vertical stresses were effectively decreased on splinting, stresses were concentrated as highly on apico-mesial area of distal abutment in distally directed load cases as the distal inclination of bone level was severe. 5. The directions and magnitudes of abutment movements were decreased with teeth splinting.