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Factor analysis of the trend of stream quality in Nakdong River
김경무,이인락,김종태 한국데이터정보과학회 2008 한국데이터정보과학회지 Vol.19 No.4
The goal of this paper is to investigate the trend of stream quality and the quality of water in Nakdong river by the method of factor analysis. It used the fourteen different monthly time series data such as pH, BOD, COD, SS, TN and etc. of the thirty four of Nakdong River measurement points from Jan. 1998 to Dec. 2006. The result of factor analysis is that the factor 1 results from organic water pollution is occupied 29.288% such as BOD, COD, TN and EC, and the factor 2 explained from sewage and a seasonal variation is occupied 16.467% such as SS.
경험기법을 사용한 SNS 스팸의 클러스터링에 관한 연구
권영만,이인락,김명관,Kwon, Young-Man,Lee, In-Rak,Kim, Myung-Gwan 한국인터넷방송통신학회 2014 한국인터넷방송통신학회 논문지 Vol.14 No.6
It has good features for social networking with friends SNS is maintained. However, various enterprises, individuals invading the inconvenience spammers have exposure to a number of users to tweet spam. The study was conducted in the existing research on these spam tweets. However, the results showed a more accurate classification and detection is difficult because of the lack of precision and different causes. In this paper, we describe how to classify the characteristics of spammers, classification criteria. Also has a link rate and difference between followers and following, these features were present classification criteria for spammers account. This experiment was performed according to the criteria. Randomized trial of spam and non-spam accounts were selected and account type was conducted according to the criteria 68% of the link ratio of spam accounts. Followers / Following ratio was 27581.5. Non-spam accounts was 6.12%. Followers / Following ratio was 1.26. SNS는 친구들의 친목과 인맥유지를 위한 순기능을 가지고 있다. 그러나 각종 기업, 개인 스패머들이 팔로잉을 통해 스팸 트윗하여 다수의 이용자들에게 노출, 불편을 끼치고 있다. 기존 연구에서 이러한 스팸 트윗에 대해 연구를 실시한경우가 있다. 그러나 정교함의 부족함과 여러 원인들로 인해 보다 정확한 분류 및 검출이 어려운 결과를 나타내었다. 본 논문에서는 스패머들의 특징, 분류기준, 분류방법에 대해 기술하였다. 또한 이러한 특징 중 링크율과 자신을 팔로워한 부류와 자신이 팔로잉한 부류와의 차이를 통하여 스패머 계정에 대한 분류기준을 제시하였다. 실험은 무작위 스팸 계정과 일반 계정을 선정하였으며 분류기준에 따라 진행하였다. 결과로 스팸 계정은 링크율 68%, 팔로워 / 팔로잉 비율은 27581.5 였고 일반 계정은 6.12%, 팔로워 / 팔로잉 비율은 1.26 였다.
2026년까지 대구광역시와 경상북도 지역의 고등학교 3학년 학생수에 대한 예측과 대학 입학정원수와의 비교 분석
김종태,서효민,이인락,Kim, Jong-Tae,Seo, Hyo-Min,Lee, In-Lak 한국데이터정보과학회 2009 한국데이터정보과학회지 Vol.20 No.1
본 연구는 이동평균을 이용하여 2009년부터 2026년까지 대구 경북 (대구광역시와 경상북도) 지역의 고3학생수 (고등학교 3학년 학생 수)를 예측하고, 그 결과와 교육인적자원 통계서비스의 2005년부터 2007년까지의 고3학생수에 대한 예측들과 비교분석하였다. 그리고 고3학생수의 감소에 대하여 대구 경북의 전문대학을 포함한 대학들의 입학정원수와 관계를 분석하였다. 분석결과 2007년의 고3학생수를 기준으로 볼 때, 교육인적자원 통계시스템의 예측연도2007년 예측결과인 2017년에 입학생유치의 어려움은 피하더라도 2-3년 후인 2019년과 2020년에는 대구?경북의 입학생 유치에 심각한 어려움이 오는 것으로 예측이 된다. The goal of this paper is to get the result of the forecasting for the numbers of a high-school graduate by a moving average method and the statistical analysis for numbers of the limit of matriculation on the most colleges and universities in Daegu city and Gyoungbook until 2026 year. Recently, the decrease of the number of a high-school graduate have influences on the number of limit matriculation. The future of most colleges and universities in Daegu city and Gyoungbook is hanging in the balance after the crisis of the serious decrease of the number of a high-school graduate until 2026 year.
위장관의 비호지킨 림프종 환자에서 발생한 Isospora Belli 1 예
김민성,박봉태,이일수,박종호,이인상,장도현,조성락,문취용,강종득,김종한,최호수,이채원 대한내과학회 1996 대한내과학회지 Vol.51 No.1
The coccidian parasite Isospora belli causes human intestinal disease. It have been associated with immunodeficent states. Recently Isospora belli has also been recognized as an opportunistic protozoan pathogen in patients with the acquired immunodeficiency syndrome(AIDS). Most case are self-limited, with spontaneous resolution occuring in several weeks. However, in patients with AIDS or other immunocompromise infections are not self-limited but rather may resemble cryptosporidiosis with chronic, profuse watery diarrhea. Recently we experienced a case of isosporiasis in non-Hodgkin's lymphoma patient presenting as diarrhea and weight loss. The patient was treated with trimethoprim-sulfamethoxazole with clinical improvement. So we report this case with a literature review.
문취용(Chi Young Moon),이인상(In Sang Lee),박봉태(Bong Tae Park),강종득(Jong Duk Gang),김종한(Jong Han Kim),김민성(Min Sung Kim),이일수(Il Soo Lee),장도현(Do Heun Chang),박종호(Chong Ho park),조성락(Sung Lak Cho),이채원(Chae Won Lee 대한소화기학회 1995 대한소화기학회지 Vol.27 No.6
Primary multiple cancer means that more than two cancers occur independently in an individual. There have been many reports on primary multiple cancer since Billorth reported it for the first time in 1889. Owing to advancement of diagnostic procedures, reported cases of primary multiple cancers have been increased in number. The most frequent association in stomach cancer was followed by esophagus, larynx, liver, uterus. Here we report 1 case of primary multiple cancer who was a 60-year-old woman with epigastric pain. Endoscopy disclosed white patch and irregular base lesion on the antrum. A CT scan of the abdomen showed a lobulated soft tissue mass in the left kidney. The biopsy specimens showed adenocarcinoma on stomach and renal cell carcinoma on kidney. (Korean J Gastroenterol 1995;27:734 - 738)
김종한,김민성,박봉태,이인상,조성락,문취용,강종득,설병룡 대한소화기내시경학회 1996 Clinical Endoscopy Vol.16 No.6
Congenital anomaly of the extrahepatic biliary system is relatively common, especially vascular variations are much more frequent than anatomic variations. The normal anatomical structure is encountered in only 35 percent of individuals, many of these variations have little or no clinical improtance, but some cases induce symptoms and signs or may lead to incorrect diagnosis and inappropriate management. These are very important to correct diagnosis of biliary variations observed during ultrasonography, cholangiography and endoscopic retrograde cholangiopancreatography(ERCP) and to accurate management by surgeon or endoscopist since accidental section or ligation of aberrant structures can lead to serious complications. We experienced a very rare case of extrahepatic bile duct anomaly confirmed by ERCP. The right and left extrahepatic ducts were connected at the level of the pancreatic segment of the common bile duct and the cystic duct drains to the right extrahepatic duct. There were several stones in the distal portion of the left extrahepatic duct and gallbladder.