살모사 교상 후에 발생한 뇌간 경색

권석범,이병철,배재천,황성희,김대훈 대한신경과학회 1998 대한신경과학회지 Vol.16 No.4

2자유도 제어기를 이용한 유도전동기 속도제어

황대규,오태석,김일환 江原大學校 産業技術硏究所 2002 産業技術硏究 Vol.22 No.B

This paper describes a design of an induction motor control system using a 2 degree-of-freedom PI controller to compensate the effects of disturbance without degrading tracking performance. On the basis of vector control principle, the control system is simulated by using the ACSL and implemented on a DSP system(TMS320C31). In designing the 2 DOF controller, we can tune the performance of either the tracking or disturbance rejection independently without affecting the other. With the experimental results, the 2 DOF controller has shown a better performance in command tracking and disturbance rejection than a conventional PI controller.

人的資源管理를 통한 企業의 戰略經營에 관한 硏究

黃大錫 建國大學校 經濟經營硏究所 1995 商經硏究 Vol.20 No.1

How do human resource managenet occurs at all levels of organizations and increasingly, outside organizations, as companies manage relationships with free-lancers, consultants, and suppliers. We show how innovative human resource practices have been involved in the strategic successes of a number of many companies. And we discuss the need for new skills, new polices, and new human resource management structures. We should focus on human resource management in terms of its strategic role in both construction and implementation of long-run plans. The concepts and tools of strategic human resource management system needed are fundamentally different from stock in trade of traditional personnel administration. Therefore this article stresses the strategic level of human resource management at the levels of operation in strategic management. The trends that emerged during the 1980s in terms of the labor market, labor relations, and institutional settings did not seem to follow the evolutionary pattern often implicit in most human resource management. We argue that these original and peculiar employment systems are not necessarily advanced or sophisticated HRM polices. Rather, they are consistent with the emergence of hybrid organizational forms and with specific types of interactions between firms and their environments. This view of HRM as constitutive of strategic change entails a new creative role for both HRM departments and other managers. As the strategic management of human resources becomes more complex, as it spreads throughout the organization and becomes despecialized, the primary task that emerges for HRM research is to develop innovative interpretative frameworks that are contextualized in the relevant national, local, and business environments.

골반골절 환자에서 출혈의 정도를 반영하는 분류

황태식,손대곤,김인병,장석준 大韓應急醫學會 1996 대한응급의학회지 Vol.7 No.1

The causes of death of pelvic bone fracture are hemorrhage, associated internal organ injuries, sepsis, and multi-organ failure, among which hemorrhage still remains as the leading cause of death. While previous classification for pelvic bone fracture was focused on orthopedic treatment, Pennel & Sutherland suggested a new classification according to the pelvis AP film took in the emergency room. Since this classification supposedly evaluates hemorrhage from pelvic bone fracture, we are reporting on the efficiency of this classification. Out of all the 150 patients admitted to Yong Dong Severance Hospital Emergency Room from 1992, Jan. through 1994, Dec. due to pelvic bone fracture, 18 people with incomplete medical record and X-ray film excluded from the study. The study was done Cohort method and t-test was used. According to the new classification, the unstable fracture had a much more bleeding amount regardless of the type, and type I stable fracture bled more than all the other stable fracture. These were statistically meaningful. Also, there was no differences in the type of fracture when ISS(Injury Severity Scale), GCS(Glasgow Coma Scale), and associated injury were compared. In conclusion, previous classification was done according to orthopedic treatment and this classification could be done only after pelvis X-ray series and pelvic bone CT was performed. Therefore much more time is consumed, more stress is put upon the patient and no comparisons can be made in performing emergency care. On the other hand, modified Pennel &-Sutherl`s classification can be simply classified in the emergency room by taking pelvis AP film only and the bleeding amount can be measured according to the type. Therefore, this classification can be helpful in performing emergency care.

산업용 이차전지의 열화진단에 관한 연구

장대경,황호석,박민기 서울産業大學校 2005 논문집 Vol.54 No.3

This paper proposes a new degradation diagnosis method of secondary battery in order to improve a battery economy. In the proposed method, a bad cell is detected by the measurement of DC internal resistance and the battery capacity is estimated by the electric discharge test in a short period of time, which can be used to determine the time to replace the battery. Through the computer simulation and actual experimentation, the proposed method's validity is confirmed by comparing and analyzing the performance. As a result, we show that it is possible to estimate the accurate capacity of secondary battery in a short space of time.

고등학생들의 생물교과 관련 과학 과정기능 평가

곽대오,황진석,이현주 이화여자대학교 교과교육연구소 2010 교과교육학연구 Vol.14 No.1

본 연구에서는 고등학생들의 생물교과 관련 과학 과정기능 수행 정도를 파악하고 이를 통하여 고등학교 생물교과에서의 교육과정과 교수․학습방법 개선 등의 피드백에 필요한 정보를 고등학교 생물교사들에게 제공하고자 고등학생들을 대상으로 본 연구에서 개발한 생물교과 관련 과학 과정기능 평가도구를 적용하여 다음과 같은 결과를 얻었다. 고등학생들의 생물교과 관련 과학 과정기능 성취도는 전체적으로 매우 낮은 편이었고 개인별로 차이가 심하였다. 과학 과정기능 범주별로는 결과분석 범주의 성취도가 다른 범주들에 비해 높았고, 그 다음으로 결과해석 범주의 성취도가 다른 5가지 범주들에 비해 높았다. 생물교과 관련 과학 과정기능 평가 결과 생물교과 실험수업 경험학생들이 비경험학생들 보다 전체 성취도가 높게 나타났다. 과학 과정기능 범주별로 보면 문제해결 방법설계, 수행, 결과해석, 적용 등의 3가지 범주들의 성취도에서 생물교과 실험수업 경험학생들이 비경험학생들에 비해 높았다. 남학생들과 여학생들의 성취도는 7가지 과학 과정기능 범주들 가운데 문제 및 가설설정 1가지 범주에서만 남학생들이 여학생들 보다 높게 나타났으나 나머지 6가지 범주들에서는 차이가 없었다. 그 결과 전체적으로는 남학생들과 여학생들의 성취도가 유의적인 차이가 나타나지 않았다. 고등학생들의 생물교과 학업성취도와 생물교과 관련 과학 과정기능 성취도간에는 매우 강한 정의 상관관계가 있음을 알 수 있다. The primary purpose of this study was to assess high school students’ performance on science process skills in biology. In order to collect data, a test instrument composed of 27 restricted response questions developed by the authors was administered to 258 (129 males and 129 females) second year students at 8 high schools in Gyeongsangnam-do. The results were as follows: The students received low, unsatisfactory mean scores in the test of science process skills in biology, and individual differences were very large. Out of the seven categories, the achievement score was the highest, and as for the interpretation of the results, formulation of problems or hypotheses, performance, application of results, and identification of variables or control of experiment followed in order. Finally, the lowest achievement score was in the category of design of ways and means. Students who had experienced experimental activities in the subject matter of biology scored significantly (p<0.01) higher than those with less experience. Gender difference in the mean scores of science process skills in biology was not found. Finally, there was a statistically significant (p<0.01) and a fairly strong correlation (r=0.599) between the students' score in the science process skills test and learning achievement in biology.

성균관대학교 멀티미디어 원격교육 시스템(배움 한마당) 개발에 관한 연구

김석수,권해문,이상권,김상진,전진호,황대준 成均館大學校 科學技術硏究所 1997 論文集 Vol.48 No.1

We propose SKKU Multimedia Distance Education System for distance education between nature science campus(Suwon) and social science campus(Seoul) in Sung Kyun Kwan University on DooRae (Distributed Object Oriented Multimedia Application Crafting Environment for Collaboration) framework (or platform). We support ONE : N study mode for a group lecture and discussion between two campus, and also we support mediation for floor mode of a group lecture and brain storming for floor mode of discussion. The communication portocol of this system is composed of TCP/IP and UDP, and the network type is composed of WAN(El line)for between the Suwon campus and Seoul campus, ATM LAN for each campus(local site). And, this system supports the application development of the collaborative multimedia environment connected with the various network in the CBM (Computer based Multimedia) based. Also, it does not restrict on space between a teacher(s) and a student(s) into cyberspace which made by network. This system has an interaction, late comer, a question and an answer, multi-session, application sharing and whiteboard which resembles chalkboard. Also, various supplementary functions such as video conference and voice conference for this system are what makes face-to-face education effective. Also it supports real or non-real type. The operation system developed on windows 95.

2형 당뇨병 환자에서 혈청 Ghrelin의 농도

장용석,황동진,양윤정,박지현,이대열 대한소아내분비학회 2004 Annals of Pediatirc Endocrinology & Metabolism Vol.9 No.1

구강내 결손부에 적용된 연조직 재건술식들에 대한 임상적 고찰

김욱규,이승환,황대석,김용덕,신상훈,김종렬,정인교 부산대학교 병원 암연구소 2007 부산대병원학술지 Vol.- No.21

To evaluate criteria, indications, and prognosis of the various reconstructive methods on the patients with intraoral soft tissue defect who had been treated at Dept. of Oral and Maxillofacial Surgery, Pusan National University Hospital from 2003 to 2005, we have reviewed the clinical data of the patients and analysed. The results were as follows: 1. Tongue flaps have been mainly applied on anterior portion of palate and maxilla. The survival rate was high percent, but the cooperation of patient was inevitable for the success. 2. Palatal mucosa rotational flaps were available on relative large defect on palate, oroantral fistula site. The side effect was a scaring band from secondary healing on denuded donor palate site. Sometimes the band came to be a hinderance to swallowing, phonation. 3. The application of free skin graft on entire maxilla site , palate was possible. The skin from thigh, abdomen could be applicable on fixed or movable tissues. The advantages of abdominal skin were easy harvest and direct donor site closure. 4. Forearm free flap was a workhorse flap for everywhere in intraoral defects. We had used the flap on cheek, floor of mouth, tongue without any significant complications. But the application of the flap was required for long operation time, which was disadvantageous to the old, weak patients. 5. Cervical platysmal flap could be easily applicable for buccal cheek, floor of mouth after excision of the cancer lesion. the design of the flap could be made simultaneously on neck dissection, but the danger of cancer remnants on the flap always might be remained. 6. Buccal fat pad pedicled flap must have been a primary flap for repair of oroantral fistula especially on posterior maxilla. The flap survival will be expected if the considerations for above reconstructivε methods on site, size, condition of defects primarily could be made.

구강내 악성흑색종에 대한 임상연구

김욱규,허진호,황대석,김용덕,신상훈,김종렬,정인교 부산대학교 병원 암연구소 2008 부산대병원학술지 Vol.- No.23

The prognosis of oral malignant melanoma is poor compared with cutaneous melanoma. It may be related to the difficulty of wide enough resection, the early hematogenous matastases, higher stage at initial diagnosis, tendency to growth vertically. In the view of histological differences between oral mucosa and skin, it is impossible use Clark’s and Breslow’s classifications for prognosis. The great problem is that there is still no consensus on the treatment due to rarity. Because data collection from case reports is considered to be the best source of information and should be pooled to anlalyze key determinants of outcome, We reported on 6 cases of primary malignant melanoma of the oral cavity which were diagnosed and treated in Pusan National University Hospital recently and reviewed the literature. Immunohistochemical study on S100 Protein, GP 100 (HMB-45) with biopsy was usable to confirm the melanoma. Neck dissection including wide excision is recommended if lymph node involvement is suspected. Additionally, adjuvant chemotherapy could be supporting therapy.