원격코드검증을 통한 웹컨텐츠의 악성스크립트 탐지

최재영,김성기,이혁준,민병준,Choi, Jae-Yeong,Kim, Sung-Ki,Lee, Hyuk-Jun,Min, Byoung-Joon 한국정보처리학회 2012 정보처리학회논문지 C : 정보통신,정보보안 Vol.19 No.1

Sharing cross-site resources has been adopted by many recent websites in the forms of service-mashup and social network services. In this change, exploitation of the new vulnerabilities increases, which includes inserting malicious codes into the interaction points between clients and services instead of attacking the websites directly. In this paper, we present a system model to identify malicious script codes in the web contents by means of a remote verification while the web contents downloaded from multiple trusted origins are executed in a client's browser space. Our system classifies verification items according to the origin of request based on the information on the service code implementation and stores the verification results into three databases composed of white, gray, and black lists. Through the experimental evaluations, we have confirmed that our system provides clients with increased security by effectively detecting malicious scripts in the mashup web environment. 최근 웹사이트는 매쉬업, 소셜 서비스 등으로 다양한 출처의 리소스를 상호 참조하는 형태로 변화하면서 해킹 시도도 사이트를 직접 공격하기보다 서비스 주체와 연계 서비스, 클라이언트가 상호 작용하는 접점에 악성스크립트를 삽입하는 공격이 증가하고 있다. 본 논문에서는 웹사이트 이용 시 신뢰관계에 있는 여러 출처로부터 다운받은 웹컨텐츠의 HTML 코드와 자바스크립트 코드가 클라이언트 브라우저에서 구동 시 삽입된 악성스크립트를 원격의 검증시스템으로부터 탐지하는 모델을 제안한다. 서비스 주체의 구현코드 정보를 활용하여 요청 출처에 따라 검증 항목을 분류하고 웹컨텐츠의 검증 요소를 추출하여 검증 평가결과를 화이트, 그레이, 블랙 리스트로 데이터베이스에 저장하였다. 실험평가를 통해 제안한 시스템이 악성스크립트를 효율적으로 탐지하여 클라이언트의 보안이 향상됨을 확인하였다.

고지방식이로 유도된 C57BL/6 mice에서 감국이 미치는 비만억제 효과

최재영,이자복,김명옥,Choi, Jae Young,Lee, Ja-bok,Kim, Myeong-ok 중소기업융합학회 2021 융합정보논문지 Vol.11 No.4

감국의 유산균 발효를 통한 감국 배양물(CILL)의 비만억제 식품의 소재로서 가능성을 알아보기 위해 고지방식이로 유도된 C57BL/6 mice에서의 체중, body fat mass, T cell 등을 측정하였다. 체중 변화에서 CILL 군 (25.15±2.44 g)은 4주부터 체중 감소를 보였으며, 1주차부터 8주차까지 낮은 증체량을 유지했다(1.00±0.53 g). 8주 체중(30.38±4.17 g)은 HFD 군(60% high fat diet, 34.99±2.09 g) 대비 13.15%의 체중 감소를 보였다. Fat mass는 10.3022±2.8813 g로 감소했으며, 간 절대 중량에서 HFD 군에 비해 감소하였다. CD4+ T cell 4.84±1.33%, CD8+ T cell 7.02±2.26%, CD4+CD8+ T cell 1.46±0.81%로 HFD 군에 비해 높게 측정되었다. 결과적으로 CILL은 비만억제 효과가 있으며, CILL내의 비만억제 물질을 선별한다면 효과적인 비만억제 식품 소재로서의 가능성이 있을 것으로 사료된다. In order to determine the possibility that Chrysanthemum indicum L. cultured with Lactococcus lactis (CILL) is a material for obesity suppression food, the body weight, body fat mass, and T cells were determined in C57BL/6 mice induced by a high fat diet. The CILL (25.15±2.44 g) demonstrated weight loss from week 4 onward and maintained a low weight gain from week 1 to week 8 (1.00±0.53 g). The 8-week body weight (30.38±4.17 g) indicated loss of 13.15% when compared to the HFD (60% high fat diet, 34.99±2.09 g). Fat mass decreased to 10.3022±2.8813 g, and the absolute liver weight decreased relative to that in the HFD. CD4+ T cells were 4.84±1.33%, CD8+ T cells 7.02±2.26%, and CD4+CD8+ T cells 1.46±0.81%, which were all higher than those in the HFD. As a result, CILL can be used as a material for preventing obesity as an effective measure toward reducing weight when consumed orally.

IT 투자 정당화 요인에 관한 연구

최재영,Choi, Jaeyoung 디지털산업정보학회 2015 디지털산업정보학회논문지 Vol.11 No.4

Although actual business environment is getting difficult and hard, IT companies tend to shy away from of annual investment. Many firms have already reached the 25 percent level. However, the profit and the result of their annual investment needs to be evaluated objectively. IT investment analysis usually proceeds by comparing benefits and costs of an IT investment. Much of the problem derives from the historical treatment of IT as an overhead expense rather than a capital asset. What is most worrying about the current situation is the pressure to take a very short-term view of IT. Therefore, this research aims to analyses and justify the necessity of Visionary IT Investment. For this, it is crucial to identify the factors, which affect positively Visionary IT Investment and understand the role of CIO and explain the result of Visionary IT Investment, which is differed to related business and by different business environment. As a result of this study, the legitimacy of IT Investment is proved through analyzing the business value of not investing and cost-avoidance strategies.

제장간막관 및 혈관 잔류이상에 대한 임상적 고찰

최재영,정풍만,Choi, Jae-Young,Jung, Poong-Man 대한소아외과학회 1998 소아외과 Vol.4 No.1

Of 72 patients with vitelline duct and vessel remnants, 45 (62.5 %) had symptomatic lesions. The mean age of the patients was 27.9 months. Males predominated (4.6 : 1). There were 22 cases of Meckel's diverticulum, 6 of Meckel's diverticulum attatched to the umbilicus with a fibrous band, 6 cases of patent vitelline duct, 5 cases of vitelline artery remnants as a fibrous band and 2 cases each of umbilical sinus and polyp, and vitelline cyst. Twenty-three patients (51 %) presented with intestinal obstruction, 6(13 %) with rectal bleeding, 4(9 %) with perforated Meckel's diverticulum, 5 with intestinal juice drainage through umbilicus, 5 with umbilical lesions, 1 with abdominal mass, and 1 with sepsis. Intestinal obstruction due to fibrous band developed during infancy(average age; 4.6 months). Seventeen asymptomatic Meckel's diverticulum, 8 obliterated vitelline artery remnants and 1 vitelline vein remnant as fibrous band, and 1 vitelline cyst were found incidentally at laparotomy. About 82 % of the complicated Meckel's diverticulum presented in infants and children less than 4 years of age.

복강경 부신절제술을 시행한 11예에 관한 임상적 고찰 ⁣고식적 수술법과의 비교⁣

최재영,고석환,이길연,이석환,이상목,박호철,홍성화,오수명,윤충,Jae Young Choi,Suck Hwan Koh,Kil Yeon Lee,Suk Hwan Lee,Sang Mok Lee,Ho Chul Park,Sung Wha Hong,Soo Myung Oh,and Choong Yoon 대한갑상선-내분비외과학회 2003 The Koreran journal of Endocrine Surgery Vol.3 No.2

RFID 사용요인이 신뢰, 지각된 위험, 모바일RFID환경 하에서 사용의도에 미치는 영향 -약국RFID 시스템을 중심으로-

최재영 ( Jae Young Choi1 ),차재빈 ( Jae Bin Cha1 ),김상만 ( Sang Man Kim ) 경희대학교 경영연구원 2013 의료경영학연구 Vol.7 No.1

This study examined the influence of various factors of RFID use in mobile RFID environment, focusing on pharmacies` RFID systems. The purpose of the study was to verify the possibility of a more widespread use of RFID and mobile RFID in medical industry by exploring what impact RIFD use factors have on the intention to use in RFID environment. The subjects were pharmacists who have their own pharmacies in Seoul and Gyeonggi Province. Of 400 questionnaires distributed to the respondents, 392 were used in the final analysis except 8 with insufficient answers. The empirical analysis results showed that perceived security, perceived cost, and social influence had significant impacts on trust, while social influence and perceived cost had significant impacts on perceived risk. Among RFID use factors, social influence, perceived security, and perceived risk had significant impacts on intention to use in mobile RFID environment. Trust and perceived cost did not have a significant impact. The summary of analysis results, implications, and limitations are presented in the conclusion.

산왕거미 (Araneus ventricosus) 심관과 심근세포의 미세구조

최재영,문명진,Choi, Jae-Young,Moon, Myung-Jin 한국현미경학회 2003 Applied microscopy Vol.33 No.4

왕거미과 산왕거미(Araneus ventricosus)의 심관과 심근세포의 미세구조적 특성을 주사형 및 투과형 전자현미경으로 관찰하였다. 거미의 심관은 복부마디의 등쪽에 분포되어 있고, 심외막과 심근층으로 구성되어 있었다. 심근층의 근섬유들은 종축을 중심으로 나선상의 배열을 이루고 있었고, 내막이 없이 혈림프에 직접 노출되는 구조를 이루고 있었다. 심관의 외부 표면에서는 3쌍의 심문이 형성되어 있었고, 내강에서는 원형질혈구와 과립혈구, 그리고 편도혈구 등 다양한 유형의 혈구들이 관찰되었다. 특히 심관의 내강을 향해 돌출된 심근돌기 주위에서는 편도혈구들이 대부분을 차지하고 있었다. 편도혈구의 세포질에는 유리 리보조옴이 산재되어 있었고 핵에는 이질염색질과 인이 발달되어 있었으나, 심근층 조직과의 특이한 연접은 관찰되지 않았다. 심근층에는 횡문이 형성되어 있었고, Z-line을 중심으로 근절의 구조를 이룬 근원섬유의 주위에서는 미토콘드리아와 근소포체가 풍부하게 함유되어 있었다. 심관의 배면을 따라 뻗은 신경절의 축삭들이 심근세포와 신경근육간 연접부를 형성하고 있음이 관찰되었다. Fine structural characteristics of the heart tube and its cardiac muscle cells in spider, Araneus ventricosus are investigated by both of scanning and transmission electron microscopes. The heart tube of the spider is extended mid-dorsally along the anterior part of the abdomen, and is consisted of the thin outer layer of connective tissue (epicardium) and the thick muscle layer (myocardium). The myocardium in the spider has a typical fanlike spiral structure toward anterior part put across between the muscle fibers. Therefore, it did not give rise to the intima, and muscle cells are in direct contact to the hemolymph. The heart tube appeared to be three pairs of ostia and numerous hemocytes accumulated at the inner surface of the myocardial layer. Among several kinds of the hemocytes, the oenocytoids are the most predominant hemocytes accumulated along the myocardial folds which stretched toward heart lumen. The heart muscle cells are cross striated, branched, and multinucleated. They contain a lot of mitochondria, which provide for the continuous energy demands of the heart. Thread-like ganglion on the dorsal side of the heart tube gives off axons that innervate the heart muscle cells.

H₂S 독성가스감지기가 필요한 정량적 공정설비 기준 및 비상시 안전을 위한 위치선정 방안에 대한 연구

최재영,권정환,Choi, Jae-Young,Kwon, Jung-Hwan 한국가스학회 2018 한국가스학회지 Vol.22 No.2

Design techniques for minimizing the damage caused by leakage of $H_2S$ gas, contained in natural gas and petroleum, have been widely studied abroad in chemical plants that purify and process natural gas and petroleum. However, there is no domestic engineering practice and regulation of $H_2S$. In accordance with the circumstances, this study proposes the quantitative criteria of process equipment to install $H_2S$ toxic gas detector as 500 ppm and explains the valid basis. The $H_2S$ gas dispersion radius up to IDLH 100 ppm is calculated by ALOHA under previous $H_2S$ gas leak accident scenario. The weather conditions of modeling include the conditions of Ulsan, Yeosu and Daesan, the three major petrochemical complexes in Korea. The long radius up to 100 ppm was derived in order of Ulsan, Daesan, Yeosu. For emergency safety the dispersion radius up to 100 ppm of the $H_2S$ gas obtained in this study should be extended to apply the additional $H_2S$ toxic gas detector, and local climate conditions should be considered. 천연가스 및 석유를 정제 및 가공하는 화공플랜트에서 원료에 함유된 황화수소($H_2S$)의 누출로 인한 피해를 최소화시키기 위한 설계 기법들이 세계적으로 널리 연구되어왔다. 그러나 국내에서는 화공플랜트에서 $H_2S$ 가스 피해 최소화를 위한 별도의 뚜렷한 설계 지침 및 규제가 없는 실정이다. 그러므로 본 연구는 $H_2S$ 독성가스감지기를 설치해야 할 공정설비의 $H_2S$ 가스 함량의 정량적 기준을 500 ppm으로 제시하고 타당한 근거를 설명하였다. 또한 ALOHA 프로그램을 사용하여 과거 $H_2S$ 가스 누출 사고를 재구성하여 IDLH 값인 100 ppm까지의 확산 반경을 산출하였다. 모델링의 기상 조건은 국내 3대 석유화학단지가 위치한 울산, 여수, 대산의 조건을 각각 적용하였으며, 울산, 대산, 여수 순서로 긴 반경이 도출되었다. 비상시 안전을 위해서 본 연구에서 얻은 $H_2S$ 가스의 100 ppm까지의 확산 반경을 고려한 추가적인 $H_2S$ 독성가스감지기가 설치되어야 하고, 이때는 반드시 지역별 기후조건이 고려되어야 할 것이다.

사상의학적(四象醫學的) 중풍치험(中風治驗) 157례(例)에 대(對)한 임상적(臨床的) 연구(硏究)

최재영,박성식,Choi, Jae-young,Park, Seong-sik 사상체질의학회 1998 사상체질의학회지 Vol.10 No.2

1. 연구배경 및 목적 중풍환자(中風患者)에 대한 임상적 연구를 통하여 중풍치료(中風治療)에 사상의학적(四象醫學的) 관리지침을 설정하고 체질병증(體質病證)의 이해에 도움을 주고자 한다. 2. 방 법 1997년 3월부터 1998년 2월까지 1년간 동국대학교 분당한방병원 체질의학클리닉에 입원치료 받았던 뇌졸중 환자 157명(남자 79명, 여자 78명)을 대상으로 환자의 특성(特性), 병력(病歷), 증상(症狀), 치료경과(治療經過) 등에 관하여 조사하고 분석하였다. 3. 결 과 환자의 체질분포는 태음인(太陰人)이 88명(56.1%), 소양인(少陽人)이 48명(30.6%), 소음인(少陰人)이 21명(13.4%)이었다. 연령의 50세 이상에서 70세 미만이 과반수를 차지하였고 평균은 65세로 나타났다. 뇌졸중의 발병 양태로 뇌경색이 119명(75.8%)으로 대부분을 차지했으며, 뇌출혈이 11명(7.0%), 지주막하출혈이 1명(0.6%), 일과성뇌허혈발작(TIA)이 26명(16.6%)으로 나타났다. 입원시 병증관리지침(病證管理指針)의 상황으로 설태이상(舌苔異常)이 가장 많았고, 수면장애(睡眠障碍), 대사장애(大使障碍), 소변장애(小便障碍) 등의 순서로 나타났으며, 중풍관리지침(中風管理指針)의 호전도(好轉度)를 살펴보면 대사장애(大使障碍)가 87.1%의 호전율(好轉率)로서 가장 높았고, 다음으로 정서장애(情緖障碍), 연하장애(嚥下障碍) 등의 순서였다. 1. Background and Purpose: We intended to make the standards of CVA management of Sasang Constitutional Medicine and be helpful to understand the constitutional symptoms through a clinical study of CVA. 2. Methods: We studied 157 CVA inpatients(79 men and 78 women) who were in constitutional clinic of Dongguk Pundang Oriental Hospital during 1 year from March 1997 to February 1998. We investigated and analysed the characteristics, past histories, symptoms and progresses of patients. 3. Results: The results of constitutional analysis showed 88 Taeumin(56.1%), 48 Soyangin(30.6%) and 21 Soeumin(13.4%). The frequency of strokes was much the same between male and female and the greater part of cases were 50-70 of age. The CVA cases were classified into 119 cerebral infarction(75.8%), 11 cerebral hemorrhage(7.0%), 1 subarachnoid hemorrhage(0.6%) and 26 trasient ischemic attack. From the standards of symptom management, there were abnormality of a coated tongue(63.1%) in most cases, sleeping disorders(48.4%), excremental disorders(44.7%) and urinary disorders(36.9%) on admission. With regard to the rate of improvement in the standards of CVA management, excremental disorders improved 87.1% and emotional disorder 81.0%, swallowing disorder 78.7% and so on.

PTU로 유발된 흰쥐의 갑상선 기능저하증에 미치는 십전대보탕(十全大補湯)의 효과

최재영,서부일,Choi, Jae Young,Seo, Bu Il 대한한의학방제학회 2016 大韓韓醫學方劑學會誌 Vol.24 No.3

Objectives : This study was to evaluate Sibjeondaebo-tang’s(Shiquan dabutang) effect to rat hypothyroidism which induced by 6-n-propyl-2-thiouracil(PTU)Methods : Aqueous extracts of Sibjeondaebo-tang(Shiquan dabutang)(21.29%) were administered by oral dose of 300 and 150 mg/kg(rat’s body weight) for 42 days from 2 weeks before start of PTU treatment. During this moment the body weight, thyroid gland weights, liver weight, serum thyroid hormone, lipid content and liver antioxidant defense system were measured with histopathological changes of thyroid glands, Liver and these result were compared with LevoT₄ 0.5mg/kg treated ratsResults : As a result of PTU treatment, marked decreases of body weight, liver weight, serum thyroid hormone levels of T₃, T₄, triglyceride content and liver CAT activation were observed with marked increases of thyroid gland weight, thyroid gland hormone TSH, activate liver H₂O₂ and SOD, serum Total cholesterol, HDL and AST amount were admitted. In addition, marked hyperplasia of follicular cells with reduce of follicular colloid contents and sizes were showed at histopathological inspections. These PTU-induces histopathological changes related to hypothyroidism were significantly reduced by treatment of both different dosages of Sibjeondaebo-tang(Shiquan dabutang).Conclusions: This study suggest that Sibjeondaebo-tang(Shiquan dabutang) extracts have favorable effect on the thyroid hormone productions with beneficial effect on hypothyroidism medicated by modulatory effects on antioxidant defense system.