• 한국정보전자통신기술학회논문지
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• 제13권6호
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• pp.530-538
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• 2020

옥외광고는 일정한 장소의 건축구조물의 외형에 고정되는 형태가 일반적이므로 건물 및 주변 환경과의 조화가 요구된다. 이러한 옥외광고물은 자연, 건축, 거리경관을 고려한 심미적 요소가 조화롭게 배치되어야 하며, 법적 규제로 인한 실행 제한이 많은 것이 현실이다. 옥외광고물의 안전도 검사는 옥외광고물의 노후화된 상태, 규격 및 설계도서와 일치여부 등을 판단하기 위해 시행하고 있는데, 노후화된 광고물의 경우 도시의 심미적 요소를 저해할 뿐만 아니라, 차도나 보행로로 떨어지는 사례 등이 발생하여 안전적 측면에서 주기적인 검사가 시행되고 있다. 그러나 현재의 안전도 검사는 건축물 입면의 높은 간판을 심사할 때 인사사고가 발생할 위험이 있으며, 건물의 입면에 고정된 옥외 광고의 구조물은 심도 있게 검사를 시행하여 내용을 파악하기가 어렵다. 이에 본 논문에서는 드론을 활용한 옥외광고물 안전 점검 체계를 제고하고자 하며, 나아가 안전 점검 주기, 유지보수, 간판 제거 등 시설점검 이력 관리 방안을 제시하고자 한다.

• 교육녹색환경연구
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• 제20권1호
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• pp.55-65
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• 2021

이 연구의 목적은 황새와 학교 습지 비오톱이 갖는 관련성을 탐구하고, 이를 활용하여 환경교육 방안을 모색하는 것이다. 문헌 연구를 통해 텃새 황새 멸종과 복원에 이르는 역사 및 학교 습지 비오톱의 활용성을 고찰하고 환경교육에서 갖는 의미와 연관성을 도출하였다. 그리고 이를 바탕으로 초등학교 전체학년에서 활용할 수 있는 환경교육 프로그램 방안을 강구하였다. 프로그램은 환경교육 핵심요소를 반영하여 총 17차시로 구성되었으며, 황새라는 구체적인 학습소재와 학교시설로서 습지 비오톱이라는 구체적인 장소를 연계하여 체험과 실천을 경험할 수 있도록 하였다. 이를 통해 자연과의 공존을 추구하는 환경교육을 도모하고, 내용의 구체성과 체계성을 확보할 수 있을 것이다.

• Journal of Oral Medicine and Pain
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• 제47권3호
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• pp.148-151
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• 2022

Obstructive sialadenitis, one of the diseases that most frequently causes swelling and pain in the salivary glands, is mainly caused by structural obstructions. Sialolithiasis is the most frequent cause of the disease, and other causes include calculus formation, duct strictures, foreign bodies, and anatomical variations. Although there is a possibility that facial fillers directly block the salivary ducts, no cases of obstructive sialadenitis associated with them have been reported yet. We report the case of a 34-year-old female patient who complained of recurrent swelling and pain in the left buccal mucosa. She had undergone facial filler injection procedures on her facial area for cosmetic purposes several years before. Based on the findings of magnetic resonance imaging (MRI) and MR sialography, she was diagnosed with obstructive sialadenitis due to facial fillers. Through this case, we should remember to obtain a thorough history including filler treatments in the case of parotid gland swelling. We also suggest proper utilization of advanced imaging such as MRI in evaluating the location of facial fillers.

• 한국기록관리학회지
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• 제21권4호
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• pp.81-99
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• 2021

직제분석 업무는 다양한 생산기관에 대한 변천 이력과 주요 업무 기능을 파악하는 과업으로, 영구기록물관리기관 내에서 공통적으로 수행되어야 하는 과업이며 다수의 작업자가 관련 지식을 공동으로 참조해야 한다. 그러나 현업에서는 한정된 수의 담당자가 개별적으로 수작업을 통해 수행하고 있으며 그 결과도 공유되지 않고 있다. 이에 본 연구는 직제 분석 프로세스의 자동화를 통해 기록물 담당자의 업무 부담을 경감시키고 영구기록물관리기관에서 공통으로 활용 가능한 기초 자원을 구축하고자 한다. 영구기록물관리기관의 실무 담당자와 FGI를 수행함으로써 직제분석 업무를 세분화하고 자동화 가능한 부분을 선별하였으며, 이를 실현할 수 있는 방안을 함께 제안하였다. 또한 전자기록관리 과정에서 공통으로 참조 가능한 기초분석자료를 도출하고 그 결과를 실무자를 통해 검증함으로써 효율적인 지식자원 활용 방안을 제시하였다. 나아가 규격화된 업무 프로세스 정립을 통해 일관된 체계적인 업무 수행을 지원하는 기반을 마련하였다.

• 문화기술의 융합
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• 제9권1호
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• pp.679-684
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• 2023

현재 우리나라는 도심지 과밀도로 구조물과 인접하여 대규모, 대심도 굴착시공이 이루어지고 있다. 도심지에서의 인접굴착공사는 흙막이 구조물 및 지하구조물의 안전성 확보가 매우 중요하다. 이에 자동화계측 시스템을 도입하여 시설물에 대한 안전성을 관리하고 있다. 그러나 자동화계측 시스템 결과의 활용도는 매우 낮은 실정이다. 종래 평가기법은 측정된 데이터의 최댓값에만 의존하여, 이상 거동을 과대 평가할 수 있는 기법이다. 본 연구에서는 자동화계측 결과에 대한 분석기법을 개선하고자 한다. 시설물의 이상거동을 파악하기 위해 자동화계측 데이터 시계열 분석기법을 제시하였다. 또한 방대한 양의 데이터를 확률통계 분석기법을 적용하여 신뢰성 높은 결과를 도출하였다. 따라서 본 연구에서는 시설물의 방대한 양의 데이터를 처리할 수 있는 분석기법 및 평가기법을 개선하였다.

• 한국컴퓨터정보학회논문지
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• 제14권8호
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• pp.117-125
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• 2009

본 논문에서는 국내 지진관측소 정보의 XML기반 통합 관리시스템을 제안한다. 1998년도 이후부터 기상청, 한국지질자원연구원 등 지진관측소를 운영하고 있는 국내 기관이 점차 증가하고 있는 추세이다. 지진 데이터의 효율적인 활용을 위해서는 관측소 위치, 설치된 계기의 특성 및 운영 이력정보 등이 필수적이다. 각 기관별의 독자적인 관측소 정보관리로는 통일된 형태의 정보 제공이 이루어지지 못하고, 관측소 변경 정보의 신속한 전달에도 한계가 있다. 본 논문에서는 각 기관의 담당자가 웹을 통해 해당 기관의 관측소 정보를 관리하고, 이를 범국가적으로 통합하여 사용자들에게 제공할 수 있는 지진관측소 정보 통합 관리시스템을 제안하다. 지진 데이터를 이용하기 위해 필요한 최소한의 관측소 정보를 분석, XML을 이용하여 구조화하였다. 통합 관리시스템은 관측소 관리, 정보 검색 및 최신 정보제공 모듈 등으로 구성된다. 제안된 시스템을 통해 각 기관별 지진관측소 정보가 범국가적 차원에서 효율적으로 관리, 제공될 수 있을 것이다.

• 산업경영시스템학회지
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• 제46권1호
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• pp.105-111
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• 2023

Recently, research on prediction algorithms using deep learning has been actively conducted. In addition, algorithmic trading (auto-trading) based on predictive power of artificial intelligence is also becoming one of the main investment methods in stock trading field, building its own history. Since the possibility of human error is blocked at source and traded mechanically according to the conditions, it is likely to be more profitable than humans in the long run. In particular, for the virtual currency market at least for now, unlike stocks, it is not possible to evaluate the intrinsic value of each cryptocurrencies. So it is far effective to approach them with technical analysis and cryptocurrency market might be the field that the performance of algorithmic trading can be maximized. Currently, the most commonly used artificial intelligence method for financial time series data analysis and forecasting is Long short-term memory(LSTM). However, even t4he LSTM also has deficiencies which constrain its widespread use. Therefore, many improvements are needed in the design of forecasting and investment algorithms in order to increase its utilization in actual investment situations. Meanwhile, Prophet, an artificial intelligence algorithm developed by Facebook (META) in 2017, is used to predict stock and cryptocurrency prices with high prediction accuracy. In particular, it is evaluated that Prophet predicts the price of virtual currencies better than that of stocks. In this study, we aim to show Prophet's virtual currency price prediction accuracy is higher than existing deep learning-based time series prediction method. In addition, we execute mock investment with Prophet predicted value. Evaluating the final value at the end of the investment, most of tested coins exceeded the initial investment recording a positive profit. In future research, we continue to test other coins to determine whether there is a significant difference in the predictive power by coin and therefore can establish investment strategies.

• 한국간담췌외과학회지
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• 제27권4호
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• pp.372-379
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• 2023

Backgrounds/Aims: While single-incision laparoscopic cholecystectomy (SILC) has advantages in cosmesis and postoperative pain, its utilization has been limited. This study raises the possibility of expanding its indication to acute cholecystitis with the novel method of solo surgery under retrospective analysis. Methods: We compared the outcomes of SILC (n = 58) to those of three-incision laparoscopic cholecystectomy (TILC; n = 117) for acute cholecystitis, being performed from March 2014 to December 2015. Results: Intraoperative results, including the operation time, did not differ significantly, except for drain catheter insertion (p = 0.004). Each group had 1 case of open conversion due to common bile duct injury. There was no significant difference in the length of hospital stay. Either group by itself was not a risk factor for complications, but in preoperative drainage for intraoperative perforation, 3 factors of intraoperative perforation, biliary complication, and history of upper abdominal operation for additional port, only American Society of Anesthesiology (ASA) scores for postoperative complication of Clavien-Dindo grades III and IV were significant risk factors. Conclusions: Our study findings showed comparative outcomes between both groups, providing evidence for the safety and feasibility of SILC for acute cholecystitis.

• Journal of Cerebrovascular and Endovascular Neurosurgery
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• 제26권1호
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• pp.51-57
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• 2024

Since the first description of the possible utilization of the internal maxillary artery for bypass surgery, there are some reports of its use in aneurysm cases; however, there is no information about the possible advantages of this type of bypass for cerebral ischemic disease. We present a 77-year-old man with a history of diabetes, hypertension, systemic atherosclerosis, and two acute myocardial infarctions with left hemiparesis. Imaging studies reported total occlusion of the right internal carotid artery and 75% occlusion on the left side, with an old opercular infarction and repeated transient ischemic attacks in the right middle cerebral artery territory despite medical treatment. After a consensus, we decided to perform a bypass from the internal maxillary artery to the M2 segment of the middle cerebral artery using a radial artery graft. After performing the proximal anastomosis, the calculated graft's free flow was 216 ml/min. Subsequently, after completing the bypass, the patency was confirmed with fluorescein videoangiography and intraoperative Doppler. Postoperatively, imaging studies showed improvement in the perfusion values and the hemiparesis from 3/5 to 4+/5. The patient was discharged one week after the operation, with a modified Rankin scale of 1, without added deficits. The use of revascularization techniques in steno-occlusive disease indicates a select group of patients that may benefit from this procedure. In addition, internal maxillary artery bypass has provided a safe option for large areas of ischemia that cannot be supplied with a superficial temporal artery - middle cerebral artery bypass.

• 한국문헌정보학회지
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• 제18권
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• pp.277-325
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• 1990

The purpose of this study was to determine the effectiveness of instructors' utilization of the reserve collection in the university library. To accomplish this, an experiment-and-questionnaire study was done by selecting an experimental group for whom the teaching method utilizing the reserve collection was used and a control group for whom the method was not used. An experimental group and a control group studied were as follows: (1) Students take the 'Comparative Politics' course in the Department of Political Science. (2) Students take the 'History of 'English Literature' course III the Department of English Language and Literature. The data to test the hypothesis were analyzed by SPSS/PC+ routine. The results are as follows: (1) There were significant differences between the experimental group and the control group in academic achievement(T(228)=6.69, P<.01). To investigate the difference in effect by major, the one-way analysis of variance was employed. According to the results, there were significant differences between the experimental group and the control group In the Department of Political Science and the Department of English Language & Literature. Therefore, students for whom the teaching method utilizing the reserve collection was used have higher academic achievement than those for whom the method was not used. (2) As for the degree of utilizing the library and its materials, there were significant differences between the experimental group and the control group(T(228)=8.87, P<.01). As for the results of the one-way analysis of variance to investigate the difference in effect by major, there were significant differences between the experimental group and the control group in both departments. As for the degree of utilizing library catalogues and bibliographical tools, there were significant differences between the experimental group and the control group(T (228)=8.55, P<.01). As stated earlier, the one-way analysis of variance to investigate the difference in effect by major has shown that there were significant differences between the experimental group and the control group in both departments. As for the degree of sincerity in doing homework and writing papers, there were significant differences between the experimental group and the control group(T(176)=8. 03, P<.01). To investigate the difference in effect by major, the one-way analysis of variance was again employed. According to the results, there were again significant differences between the experimental group and the control group in both departments. So, the students for whom the teaching method utilizing the reserve collection was employed used library catalogues and bibliographical tools much more than those for whom the method was not employed, and were more sincere in doing homework and writing papers. (3) There were also significant differences between the experimental group and the control group in degree of satisfaction in taking the course (T (228) = 6.61, P<.01). The results of the one-way analysis of variance to investigate the difference in effect by major was that there were significant differences between the experimental group and the control group in both departments. Therefore, the degree of satisfaction of students who were taught by the teaching method utilizing the reserve collection is higher than that of those who were not taught by the method. On the other hand, the responses of the experimental groups of two departments as to the degree of satisfaction with their teaching method was investigated. The result shows that students who took the 'Comparative Politics' course in a small class which employed the seminar method were higher in degree of satisfaction with the teaching method than students who took the 'History of English Literature' course III a large class which employed a lecture-oriented teaching method.