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6상 여자방식을 이용한 7상 BLDC 전동기 구동시스템
전윤석,이용균,목형수 건국대학교 산업기술연구원 2003 건국기술연구논문지 Vol.28 No.-
3-Phase BLDC Motor, which is generally used, has limited usage in high speed, due to pulsation torque occurring commutation and variable speed. To solve this problem, it is necessary to increase invariable, pole number or the number of slots. Currently, due to rapid growth of semiconductor technology and trend toward smaller and cheaper production of switching device, Multi-Phase BLDC Motor for high speed and high output power is being actively pursued to produce. In this paper 7-Phase BLDC Motor drive system and controller are designed and 7-Phase modulation method with 6-Phase conduction is studied for ideal operation of controller.
하악골 골절 환자에 있어 수술후 합병증으로 발생한 골수염의 치험례
윤규호,전인성,신용길,박준호,허남오,방석준 大韓顎顔面成形再建外科學會 1996 Maxillofacial Plastic Reconstructive Surgery Vol.18 No.4
The term osteomyelitis literally means inflammation of bone marrow. It is described as an inflammatory condition of bone primarily engaging the medullary Following circulatory collapse and ischemia, the involved portions of the bone become necrotic. Cellulitis and osteomyelitis are the most frequent complications of fractures of the mandible and maxilla, because there is an abscessed tooth in the line of fracture. Since most fractures are compound fractures, infection may develop because of contact with oral secretions or outside air. The treatment of chronic osteomyelitis is still under debate. Some authors rely on antibiotics alone, while others advocate combination with surgery. But when infection occurs, establish proper drainage and administer antibiotics. Author treated a case of infected mandibular fracture with mandibular osteotomy, sequestrectomy, iliac bone graft and hyperbaric oxygen therapy, who had suffered suppurative osteomyelitis and mandibular nonunion following the open reduction of the mandibular fracture.
박찬식,전용석 중앙대학교 건설산업기술연구소 2003 건설산업기술연구소 논문집 Vol.4 No.-
There is not an exact regulation and guidance on mechanical equipment space for the government building. It brings about financial loss because of design change and rework, and decrease building function. As MERS(mechanical equipment room size), MERH(mechanical equipment room height) and PSRS(pipe-shaft room size) cause many problems on cost and function during construction and maintenance phase, it is required to obtain the accurate data needed in design phase. This study collected data that are relevant to building mechanical equipment space of 35 government buildings, also suggested a linear regression model in order to estimate the building mechanical equipment space of government buildings.
광고 노출시점의 소비자 기분이 광고효과에 미치는 영향 : 인지적 및 감정적 반응, 광고 및 상표태도, 그리고 기억성과
이학식,전용석 한국방송광고공사 2005 광고연구 Vol.0 No.66
본 연구는 인지심리학 분야에서의 기존 연구 성과를 토대로 소비자의 기분에 따라 광고효과가 어떻게 달라지는지를 인지적 및 감정적 반응, 광고 및 상표태도, 그리고 기억성과 측면에서 조사한 것이다. 피실험자들의 기분을 긍정적 혹은 부정적으로 조작한 다음 실험용광고를 노출시키고 설문지를 이용하여 자료를 수집하였다. 본 연구에서 설정한 모든 가설은 지지되었는데, 이를 요약하면 다음과 같다. 첫째, thought positivity index와 feeling positivity index, 두 가지 모두 소비자의 기분이 긍정적인 경우 부정적인 경우보다 더 높게 나타났다. 둘째, 인지적 반응 → 상표태도의 관계는 소비자의 기분이 부정적인 경우, 그리고 감정적 반응 → 광고태도의 관계는 소비자의 기분이 긍정적인 경우 더 높게 나타났다. 셋째, 기억성과는 소비자의 기분이 부정적인 경우 긍정적인 경우보다 더 높게 나타났다. 추가적으로, 인지적 반응은 소비자의 기분이 부정적인 경우, 그리고 감정적 반응은 소비자의 기분이 긍정적인 경우 더 많이 유발된다는 것이 발견되었다. 본 연구의 결론에는 연구의 요약, 공헌점, 그리고 한계점을 논의하였으며, 끝으로 미래연구에 대한 제언을 하였다. This research is to investigate how advertising effects vary with consumers’ mood based on the findings in cognitive psychology. Advertising effects are examined in the aspects of cognitive and emotional responses, ad and brand attitudes, and memory performance. Subjects were exposed to an experimental ad and answered questionnaires after their mood was manipulated to be either positive or negative. The results indicate that (1) both thought positivity index and feeling positivity index are higher with consumers’ positive mood, (2) the relationship between cognitive responses and brand attitudes is higher with consumers’ negative mood while the relationship between emotional responses and ad attitudes is higher with positive mood, (3) memory performance is higher with consumers’ negative mood. In addition, it was found that more cognitive responses were made with consumers’ negative mood while more emotional responses were made with positive mood. In the conclusions, the authors discuss theoretical contributions and limitations and offer suggestions for future research.
3차 의료기관 응급실로 내원한 안면부 열상 환자에 대한 임상적 고찰
김양원,안성훈,류석용,김홍용,전병민,김기태 대한응급의학회 2001 대한응급의학회지 Vol.12 No.2
Background: Facial laceration is a common clinical problem in the emergency room that is frequently associated with other craniofacial injuries. It elicits an emotional response from the patient because of the underlying concern of permanent scar and secondary facial disfigurement, so they demand prompt and adequate treatment. The aim of this study is to analyze the incidence, etiology, depth, and site of facial lacerations to provide basic data for further understanding. Method: This study reviewed 1,043 facial-laceration patients treated in the emergency room at Pusan Paik Hospital between March 1999 and February 2000. This retrospective study was done by reviewing and analyzing the sex and age distributions, the monthly and daily distributions, the causes of injury, the types of injury, the sites of injury, the lengths of the lacerations, and associated injuries. Results: The sex ratio of men to wemen was 2.4:1, and the 0~10 age group was at the top of the age distribution. The number of patients was the highest on sundays and during March. About 9.2% of the patients visited the emergency room between 10:00 P.M. and 11:00 P.M. Falls(38.1%) were the most common cause of facial laceration, and deep laceration(51.8%) was the most common type of facial laceration. The most common laceration site was the forehead, followed by the chin and the nose. The most common associated craniofacial injury was facial bone fracture(39%), Facial-lacerations were sutured by plastic surgeons(80%), emergency physicians(10%), and oromaxillofacial surgeons(10%). We found statistical significance in the types and lengths of lacerations between men and women, among age groups(p<0.05). Conclusion: Facial laceration is one of the most common craniofacial injuries in the emergency room. By now, most lacerations have been repaired by plastic surgeons, But, the causes of lacerations are diverse and many patients are admitted due to the associated injuries. Therefore, emergency physicians should participate more aggressively in the care of facial-laceration patients to improve the outcome of the patients.
Prognostic Significance of HER2 Gene Amplification According to Stage of Breast Cancer
Yong Seok Kim,Yong Sung Won,Kyung Shin Park,Byung Joo Song,Jeong Soo Kim,Se Jeong Oh,Hae Myung Jeon,Sang Seol Jung,Woo Chan Park 대한의학회 2008 Journal of Korean medical science Vol.23 No.3
It is well known that the amplification of the HER2 gene is closely associated with poor prognosis of breast cancer. However, there is controversy about the clinical significance of HER2 according to lymph node status in breast cancer. The aim of this study was to identify the differences in the prognostic significance of HER2 gene amplification according to the stages of breast cancer. We prepared a tissue array for fluorescence in situ hybridization (FISH) with breast cancer specimens from the surgery in 1994 to 1999. Total 338 cases of breast cancer were enrolled and the median follow-up period was 6.3 yr. The detection rates of HER2 gene amplification were as follows: 10.3% in stage I, 22.3% in stage II, and 43.8% in stage III. On survival analyses HER2-positive groups showed worse prognosis in stage III of breast cancer, but not in stage I or II. Multivariate analyses with a Cox-regression model also revealed that HER2 amplification was an independent prognostic factor only in stage III breast cancer. Regarding HER2 gene amplification as a prognostic factor of breast cancer, the clinical significance of the gene was found to be confined to advanced breast cancer.