• Journal of Gastric Cancer
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• 제22권3호
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• pp.160-168
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• 2022

This study investigated the trends of gastric cancer in Korea by adding the latest updated gastric cancer data from 2019. Gastric cancer incidence between 1999 and 2019 was reviewed using data from the Korea Central Cancer Registry. The study period was divided into 3 periods: period I (1999-2005), period II (2006-2012), and period III (2013-2019). The incidence, mortality, tumor location, histology, stage, and treatment were analyzed. Between 1999 and 2019, 577,502 patients were newly diagnosed with gastric cancer in Korea, accounting for 33.2% of patients aged ≥ 70 years. The age-standardized incidence rate (per 100,000) significantly decreased from 2011 (43.0) to 2019 (29.6), with an annual percent change of -4.50. Additionally, the age-standardized mortality rate (per 100,000) markedly decreased from 1999 (23.9) to 2019 (6.7). The proportions of patients with cardia and fundus cancers remained consistent. The proportion of localized stage cases increased, while those of regional and distant stages decreased. The rate of surgical treatment increased in localized and regional stages from 2006 to 2019. The overall 5-year relative survival (5YRS) rate of gastric cancer (per 100,000) increased from 55.7% in period I to 77.0% in period III. From 2013 to 2019, the 5YRS rates of patients (per 100,000) who underwent surgical treatment were 100.6% and 70.5% in the localized and regional stages, respectively. The results of this study demonstrated several changes in the epidemiology of gastric cancer in Korea. This study provides information to help understand the current trends in gastric cancer in Korea.

• 산업진흥연구
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• 제2권2호
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• pp.15-22
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• 2017

본 연구는 한국폴리텍대학의 입학 홍보방식이 입시 경쟁률에 미치는 영향을 분석하였다. 한국폴리텍대학 신입생 및 재학생을 대상으로 설문지 총 66부를 분석하였다. 연구결과 첫째, 지면홍보(p<.01, ${\beta}=.363$)가 경쟁률에 영향을 미치는 것으로 나타났고, 지면홍보가 경쟁률에 17.3%의 설명력을 나타내고 있어 경쟁률에 통계적으로 유의한 영향을 미치는 것으로 나타났다. 둘째, 지면홍보와 등록률은 .406으로 p<.01 수준의 상관관계가 나타났고, 미디어홍보와 등록률은 .297로 p<.05 수준의 상관관계가 있는 것으로 분석되었다. 셋째, 고등학교계열, 한국폴리텍대학을 알게 된 동기에는 등록률에 유의한 영향을 미치지 않았으나, 입학형태에서는 수시가 정시보다 더 높게 나타나 집단 간 차이가 있는 것으로 나타났다. 본 연구는 한국폴리텍대학의 입학 홍보방식이 입시 경쟁률에 미치는 영향을 분석함으로써 지면홍보, 미디어홍보가 경쟁률과 등록률에 대한 특성 요인의 중요도를 파악하고 특성요인의 효과성을 검증한 데 연구의 의의가 있다.

• 한국임상약학회지
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• 제27권1호
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• pp.38-43
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• 2017

Objective: Seoul City has implemented the Safe Pharmacy in 2013. This study aimed to ascertain the success factors of the smoking cessation service of the Safe Pharmacy. Methods: The data for the smoking cessation registration cards were obtained from the pharmacies which participated in 2014 Safe Pharmacy. The sample included 289 smokers in 6 districts who participated at least one sessions of smoking cessation service. the service included both behavioral intervention and nicotine replacement therapy. In order to identify the effectiveness of the smoking cessation service, logistic regression analysis was used. The dependent variable was the success of quitting smoking at the 4th week. The independent variables included age, sex, employment, chronic disease, district, smoking amount, registration path, supporters for quitting smoking and number of service sessions. Results: Fifty eight point eight percent of the sample successfully quit smoking at the 4th week. Unemployment, higher smoking amount, and less service sessions were negatively related to the success of quitting smoking. There were differences in the success rate across districts. Age, sex, chronic disease, registration path, and anti-smoking supporters were not related to the success rate. Conclusion: Pharmacy can be an effective community resource for smoking cessation. Factors that could increase the effectiveness of smoking cessation service of the Safe Pharmacy and possible ways to enhance the participation of pharmacies in smoking cessation services were also discussed.

• 한국통신학회논문지
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• 제30권5C호
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• pp.364-370
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• 2005

얼굴 인식에서는 입력 영상에서 얼굴을 검출한 후에 데이터베이스의 영상과 위치와 크기를 일치시키는 등록 과정이 필요하다. 본 논문에서는 영상의 등록 과정에서 발생하는 얼굴영상의 이동, 회전, 혹은 크기의 차이를 eigenspace에서 보정하는 알고리즘을 제안하였다. 이를 위하여 얼굴 영상의 수직, 수평 이동, 회전, 크기 변환 등의 등록오차를 선형보간 행렬로 근사하였다. 각 변환행렬을 사용하여 등록오차에 따른 미분계수를 eigenspace에서 구하면 subpixel 단위의 등록 오차를 보정할 수 있다. 제안된 방법은 공간 영역에서 오차를 보정하는 것보다 계산량이 훨씬 더 적다. 오차 보정 후 얼굴 인식률이 크게 향상되는 것을 실험으로 확인하였다.

• 한국정보처리학회논문지
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• 제4권11호
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• pp.2812-2821
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• 1997

본 논문에서는 셀의 소형화와 무선 통신 서비스 이용 인구의 증가에 의해 발생하는 위치 등록 빈도의 증가를 해결할 수 있는 클러스터 개념을 이용한 위치 등록 프로토콜의 성능을 분석하였다. 클러스터 크기와 시간의 흐름에 따른 위치 등록 확률을 계산하여 클러스터 크기와 위치 등록율의 관계를 정량적으로 분석하였으며, 실제로 육각형 셀 구조에 적용하여 위치 등록 확률을 클러스터의 크기에 따라 구해 보고 시뮬레이션을 통해 이를 검증하였다．

• 대한공간정보학회지
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• 제21권4호
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• pp.101-107
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• 2013

일반적으로 상용화되고 있는 고해상도 위성영상에는 좌표가 부여되어 있지만, 촬영 당시 센서의 자세나 지표면 특성 등에 따라서 영상 간의 지역적인 위치차이가 발생한다. 따라서 좌표를 일치시켜주는 영상 간 상호등록 과정이 필수적으로 적용되어야 한다. 하지만 영상 내에 구름이 분포할 경우 두 영상 간의 정합쌍을 추출하는데 어려움을 주며, 오정합쌍을 다수 추출하는 경향을 보인다. 이에 본 연구에서는 구름이 포함된 고해상도 KOMPSAT-2 영상간의 자동 기하보정을 수행하기 위한 방법론을 제안한다. 대표적인 특징기반 정합쌍 추출 기법인 SIFT 기법을 이용하였고, 기준영상의 특징점을 기준으로 원형 버퍼를 생성하여, 오직 버퍼 내에 존재하는 대상영상의 특징점만을 후보정합쌍으로 선정하여 정합률을 높이고자 하였다. 제안 기법을 구름이 포함된 다양한 실험지역에 적용한 결과, SIFT 기법에 비해 높은 정합률을 보였고, 상호등록 정확도를 향상시킴을 확인할 수 있었다.

• Journal of Preventive Medicine and Public Health
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• 제27권4호
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• pp.735-745
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• 1994

The incidence data (1991. 7. 1$\sim$1992. 6. 30) from the Implementation Study of Seoul Cancer Registry (ISSCR) were evaluated in terms of its completeness and validity. Two indicators for the completeness, Mortality/Incidence ratio (M/I ratio) and Age-specific Incidence Curve, showed fairy good registration throughout the age-sex specific strata, except the strata aged over 75 years old. The strata had very high M/I ratio (over 100%) and decreasing pattern of incidence, which suggested incomplete registration of cancer in this group. The active surveillance by a ISSCR staff improved the registration rate especially among elderlies. From the site specific M/I ratio, we found that liver cancer had oddly high M/I ratio. Since this high M/I ratio of liver cancer appears consistently in other reliable cancer registries, it is more like to be due to the high fatality of it rather than incomplete registration. The validity of the incidence data was assessed by three indicators; Histological Verification (HV%), Primary Site Unknown (PSU%), and Age Unknown (Age UNK%). The average HV% were 77% for men and 85% for women, which were slightly lower than those of other reliable cancer registries. This low HV% might be due to the considerable size of relative frequency of liver cancer in Korea, regarding the fact that the diagnosis of liver cancer is made mostly by non-biopsical radiologic methods (CT, Ultrasono, Angiography, MRI etc.). The level of PSU% and Age UNK% were in acceptable range, but not low enough, especially in terms of Age UNK%. Although ISSCR data had acceptable quality in general, it is needed to have more hospitals participate in the registry surveillance, to make registery data merged with death certificate data regulary, and educate the registration stans to be more competent and dedicated.

• 한국지능시스템학회:학술대회논문집
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• 한국퍼지및지능시스템학회 2003년도 ISIS 2003
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• pp.571-574
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• 2003

This research is aimed to automate the generating process of the database from paper based table forms like this work. The registration table has so complicate table structures, ana in this research we used the registration tables as an example of general table structure understanding. We propose a table structure understanding system for some table types, and it has some steps. The first step is that the document images on paper are read from the image scanner. The second step is that a document image segments into some tables. In the third step, the character strings is extracted using image processing technology and the property of the character strings is determined. And the structured database is generated automatically. The proposed system consists of two systems. "Master document generation system" is used for the table form definition, and it doesn′t include the handwritten characters. "Structure analysis system for complete d table" is used for the written form, and it analyzes the table form filled in the handwritten character. We implemented the system using MS Visual C＋＋ on Windows, and it can get the correct extraction rate 98％ among 51 registration tables written by the different students.

• 한국통신학회논문지
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• 제35권11C호
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• pp.896-900
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• 2010

본 논문은 차세대 저장장치로 각광받고 있는 패턴드 미디어 장치에 대한 트랙 위치 오프셋에 따른 성능을 알아본다. 패턴드 미디어 채널은 SUL(Soft Underlayer)의 유무에 따라 1차원 검출기인 비터비 검출기와 2차원 검출기인 2차원 SOVA(Soft output Viterbi algorithm)를 이용해 실험하였고, 트랙 위치 오프셋이 없을 때, 10%, 20%, 30%, 40% 있을 때 실험하였다. 트랙 위치 오프셋이 10%일 때는 성능영화가 0.3 dB ~ 0.5 dB 정도로 크지 않았지만 그 이상이 되면, 성능열화가 심해지는 것을 볼 수 있다.

• 대한임베디드공학회논문지
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• 제18권6호
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• pp.303-310
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• 2023

A single vision system limits the ability to accurately understand the spatial constraints and interactions between robots and dynamic workers caused by gantry robots and collaborative robots during production manufacturing. In this paper, we propose a 3D pose registration method for dynamic workers based on a multi-domain vision system for safety monitoring in manufacturing environments. This method uses OpenPose, a deep learning-based posture estimation model, to estimate the worker's dynamic two-dimensional posture in real-time and reconstruct it into three-dimensional coordinates. The 3D coordinates of the reconstructed multi-domain vision system were aligned using the ICP algorithm and then registered to a single 3D coordinate system. The proposed method showed effective performance in a manufacturing process environment with an average registration error of 0.0664 m and an average frame rate of 14.597 per second.