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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.
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.
공공데이터 분석을 통한 변동성 요인 분석과 예측 모델 생성에 대한 연구
윤철희,한기형 한국산학기술학회 2023 한국산학기술학회논문지 Vol.24 No.12
Open data is being used for information transparency, civic engagement, and efficient policy-making, and it is becoming more accessible and easy to use. These public data are being used for data-driven decision-making in new fields and new research because they can provide insights through scientific research techniques and for various purposes. This paper also collected, analyzed, and utilized public data to analyze house price volatility and create a prediction model, and analyzed the factors affecting the price volatility of housing transactions in Sejong City. By integrating actual apartment transaction history and macroeconomic factors, we compared and analyzed the actual transaction history and macroeconomic data to identify correlations. We also conducted a correlation analysis using the trend search index and news coverage index. Finally, since house price fluctuations are influenced by various factors such as residential areas, transportation convenience, educational facilities, and economic conditions, this paper generated a house price prediction model based on public data and presented the correlation of volatility causes for rational decision-making.
Influence of artificial intelligence and chatbots on research integrity and publication ethics
윤철희,Payam Hosseinzadeh Kasani,Kee Hyun Cho,Jae-Won Jang 한국과학학술지편집인협의회 2024 Science Editing Vol.11 No.1
Artificial intelligence (AI)-powered chatbots are rapidly supplanting human-derived scholarly work in the fast-paced digital age. This necessitates a re-evaluation of our traditional research and publication ethics, which is the focus of this article. We explore the ethical issues that arise when AI chatbots are employed in research and publication. We critically examine the attribution of academic work, strategies for preventing plagiarism, the trustworthiness of AI-generated content, and the integration of empathy into these systems. Current approaches to ethical education, in our opinion, fall short of appropriately addressing these problems. We propose comprehensive initiatives to tackle these emerging ethical concerns. This review also examines the limitations of current chatbot detectors, underscoring the necessity for more sophisticated technology to safeguard academic integrity. The incorporation of AI and chatbots into the research environment is set to transform the way we approach scholarly inquiries. However, our study emphasizes the importance of employing these tools ethically within research and academia. As we move forward, it is of the utmost importance to concentrate on creating robust, flexible strategies and establishing comprehensive regulations that effectively align these potential technological developments with stringent ethical standards. We believe that this is an essential measure to ensure that the advancement of AI chatbots significantly augments the value of scholarly research activities, including publications, rather than introducing potential ethical quandaries.