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윤철희,조민제,황재훈,김남선 한국통신학회 2021 정보와 통신 Vol.38 No.2
본고에서는 자율주행 치안안전 기술 및 연구동향에 대해 고찰을 통해 자율주행시대의 치안안전에 대한 방향을 고민하였다. 우리는 인공지능을 도입하여 자율주행 차량 분야 뿐만아니라 경찰 치안에서도 보조적인 역할로 사용하고 있다. 이런 상황에서 앞으로 자율주행 치안안전을 어떻게 이루어내야하는지 방향성과 연구의 목적을 고민할 시기가 도래하였다. 이미 인공지능은 삶의 안전과 직결되는 경찰 치안 영역에서도 적극적으로 도입되고 있으며, 많은 치안분야 중 자율주행 부문에서 경찰의 역할은 자율주행 교통안전 및 운영관리의 주체로 정의할 수 있다. 자율주행차는 일반차량과 마찬가지로 도로시설, 교통안전시설, 통신시설 등 자율주행에 알맞는 관련 인프라의 제공 및 V2X 연결 등 자율주행 미래기술 개발이 필요하다. 경찰은 교통신호제어, 교통정보제공, 교통사고예방 등 교통안전과 운영을 원활히 관리하기 위하여 자울주행 교통체계를 구축해서 운영하고 관련기술 개발을 활발히 추진하고 있다. 또한 도로교통법, 교통사고처리특례법 등 제반 자율주행차 도로운행을 위한 법제도적 기반을 마련하여 교통소통과 교통안전을 동시에 확보하기 위한 기술개발에 매진하고 있다.
5남매에 발생한 Familial Dentinogensis Imperfecta 증례
윤철희,신효근,김오환 全北大學校 齒醫學硏究所 1986 전북치대논문집 Vol.4 No.1
Dentinogenesis imperfecta is an autosomal dominant genetic defect which affect one patient in 6000 to 8000, also reported as hereditary opalescent dentin, or Capdepont dysplasia, in France. Clinically, the teeth are described as opalescent and acquire a distinct yellow-brown color shortly after eruption. The enamel chips away and the dentin which is apparently hypomineralized, is soon worn down. Radiographically, the roots appear shorter than usual and constricted to a variable degree in the cervical region and the pulp chambers are seen to be obliterated by the formation of further calcified material. The patient, a 16-year-old girl, was referred to the Dental clinic of the Chon Buk National University Hospital for discoloration of entire teeth and serious dental carious problem. Clinical appearance and radiographic examination revealed the typical abnormilities associated with dentinogenesis imperfecta and her two sisters and two brothers had same abnormalities. We performed extraction on severe cariou, teeth, intra oral sagittal split osteotony due to asymmetry and cross bite, also, rehabilated masticatory systems with fixed crown and bridge. We had a good result.
顎骨 缺遜部의 Hydroxylapatite 및 PCBM(Particulated cancellous bone and marrow)의 混合使用時 治癒過程에 關한 實驗的 硏究
尹哲熙,辛曉根,金晤煥 全北大學校 齒醫學硏究所 1986 전북치대논문집 Vol.4 No.1
By recent studies, HAP implant showed biocompatibility with host tissue, in that no toxic or foreign body reaction was found. HAP was known to have osteophilic property but not osteogenetic ability. This study examined the healing process on histologic basis following implantation with HAP-PCBM mixture on the inferior border of rabbit mandible. The results were as follws: 1. Mild inflammatory response was observed at 1st week, foreign body reaction and inflammatory response were not observed after 2nd week. 2. Osteoclastic, phagocytic activity was observed prominently on the grafted bone at 1st, 2nd week. 3. New bone was bonded with HAP particles directly without intervening tissue after 4th week. 4. At 8th, 12th week, mature bone was observed to have infiltrated between the HAP particles and osteoclastic activities were not noted. 5. Bony bridge between underlying cortical bone and HAP particles was observed after 4th week.
윤철희,배지연,김상표,권건영,김정숙,장은숙,Yun, Cheol-Hee,Bae, Ji-Yeon,Kim, Sang-Pyo,Kwon, Kun-Young,Kim, Chung-Sook,Chang, Eun-Sook 대한세포병리학회 1994 대한세포병리학회지 Vol.5 No.2
Pulmonary giant cell carcinoma is one of the most highly malignant neoplasms of the lung. Although mixed malignant glandular or squamous components may be associated with a giant cell carcinoma, it is a distinct clinical and morphologic entity. We reviewed cytologic presentations of 6 cases of pulmonary giant ceil carcinoma. Cytologically, the single most characteristic feature of giant cell carcinoma was an extremely large, bizarre cancer cell engulfing numerous leukocytes. The nuclei of these cells showed occasional prominent nucleoli, and the cytoplasm was abundant. Giant cells were also seen in other types of pulmonary carcinoma, but the slant cells of this neoplasm could be differentiated from those encountered in undifferentiated large cell carcinoma and squamous cell carcinoma by the abundant cytoplasm, the presence of markedly enlarged nuclei, prominent nucleoli, and a significant degree of phagocytosis. In conclusion, precise diagnosis and classification of lung cancer is imperative because of proved correlation between cell type and prognosis.
윤철희,박재우,문선미,황대용 대한대장항문학회 2008 Annals of Coloproctolgy Vol.24 No.5
Purpose: Treatment of ovarian metastasis from colorectal cancer has been controversial, and only limited data on ovarian metastasis have been reported. We reviewed the clinical features of patients with ovarian metastasis from a colorectal carcinoma. Methods: From 1993 to 2002, 568 women were treated for colorectal cancer. Of those, 17 cases were diagnosed as ovarian metastasis. We reviewed the 17 cases retrospectively. Results: The incidence of ovarian metastasis was 3.0% (17/568). The number of cases involving synchronous ovarian metastasis was 7 (1.2%). Those 7 patients also had another metastasis including ovarian metastasis. Ten cases (1.8%) involved metachronous ovarian metastasis. Of those 10 patients, 8 had ovarian metastasis in combination with other organ metastasis. The median disease-free interval from the diagnosis of the primary colorectal cancer to the diagnosis of ovarian metastasis was 9.8 months, and the median survival after the diagnosis of ovarian metastasis was 17.2 months. The median survival after the diagnosis of ovarian metastasis was 23.4 months in the ovarian- metastasis-only group, compared with 10.1 months in the group with ovarian and other metastasis. The difference in survival between the two groups was statistically significant. Conclusions: The incidence of ovarian metastasis from colorectal cancer was low. When such an event occurred, it was frequently associated with widespread disease and resulted in a poor prognosis. However, patients having only ovarian metastasis had a higher survival rate.