복지거제를 위한 자원봉사 활성화 방안

문선화,류기형,박병현,배화숙 부산대학교 사회복지연구소 2000 社會福祉硏究 Vol.10 No.-

Overlay 기반의 WiBro와 WLAN 이종망 연동을 위한 Vertical 핸드오버 구현 및 성능 측정에 관한 연구

이재호,류형근,강선무,이재용,김승천 한국정보사회진흥원 2007 정보화정책 Vol.14 No.3

유비쿼터스 사회를 위한 미래 네트워크는 다양한 이종 무선망이 혼합된 형태가 될 것으로 예상되고 있다. 본 논문에서는 개별 무선망의 특징을 최대한 활용하여 1,270,000㎡ 면적의 KAIST(Korea Advanced Institute of Science and Technology) 대학교 캠퍼스에 IEEE 802.16e/WiBro와 IEEE 802.11/WLAN 를 복합적으로 설치하여 건물외부에서는 WiBro, 건물내부에서는 WLAN으로 자동 스위칭 되는 Vertical 핸드오버 System을 구축하고 이동 성능을 분석하였다. 이종망 통합 과정에서 제조사 및 통신사업자의 사정으로 인하여 Mobile IP를 지원하지 않는 라우터들이 존재하였고, 특히 현재 WiBro에 사용되는 ACR(Access Control Router)은 Mobile IP를 지원하지 않기 때문에 이를 해결하기 위하여 Overlay 기반의 Mobility 기법을 적용하였다. 본 연구에서는 실제로 대규모 통신망을 구현하고, 이에 대한 성능시험을 시행한 후 handover delay 시간 분석을 통한 현장 적용 가능성 및 개선 필요사항을 도출하였다. 그 결과 이종망간 핸드오버 시간은 평균 2.58초로써 일반 데이터 서비스는 이종망간 연속성이 보장됨을 확인하였고, 음성∙영상과 같은 실시간 서비스는 중간에 지연시간이 발생하나 응용서비스 세션 자체는 유지됨을 확인하였다. The future network is forecast with the fact that the form where the various heterogeneous wireless networks. In this paper we build both IEEE 802.16e/WiBro and IEEE 802.11/WLAN network on the KAIST(Korea Advanced Institute of Science and Technology) campus(1,270,000m2) as well as established the vertical handover system which supported WLAN in the building and WiBro outside the building. A Mobile IP is considered for the efficient vertical mobility function in IEEE 802.16/WiBro and IEEE 802.11/WLAN environment. However, during the deployment of WiBro, only some of the ACRs(Access Control Router) can support the Mobile IP function. Therefore, WiBro network can not support the mobility function for the mobile node. In this paper, we implement an overlay-based Mobile IP function and measure the performance through a field trial. Moreover, we evaluate the possibility of commercial deployment and suggest areas that need to be improved. The average handover time between WiBro and WLAN was 2.58 seconds. As a result, the user application session maintained but real time applications were delayed during the handover time.

LT, Others : PE-133 ; A case of hepatic hemangioma appearing atypical finding confirmed by dynamic MRI in patients with high risk of hepatocellular carcinoma

( Dong Won Park1 ),( Soo Hyung Ryu1 ),( Myung Ki Oh ),( Seong Yeon Jeong ),( Kyeong Sam Ok ),( Jae Chan Shim ),( Jin Nam Kim ),( You Sun Kim ),( Jeong Seop Moon ) 대한간학회 2012 춘·추계 학술대회 (KASL) Vol.2012 No.-

Background: Hemangioma is the most common benign hepatic tumor. Many hepatic hemangiomas tend to be found incidentally, but should be differentiated from malignant tumors. We report an interesting case of hepatic hemangioma in patient who has high risks of hepatocellular carcinoma. Case: A 52-year-old woman, who was a chronic alcoholic abuser and hepatitis C virus carrier with no treatment experience, was admitted due to diarrhea. The patient had suffered from intermittent abdominal pain in the right subcostal area for recent 3 months. Also the patient had easy bruising and frequent epistaxis. She had used oral contraceptives for almost 20 years. Systolic blood pressure was 160 mmHg and diastolic blood pressure was 80 mmHg. Body temperature was normal. Physical examination revealed icteric sclerae and tenderness in right upper quadrant of the abdomen. Laboratory study showed platelet count of 31,000/ul, AST/ALT of 302/127 IU/L, and total bilirubin of 2.7 mg/dl. 3-phased contrast-enhanced abdominal computed tomography (CT) revealed a 4 cm × 4 cm sized hepatic mass involving both segment 5 and 6. Abdominal CT finding suggested hepatic hemangioma, however, typical finding of hemagioma was unclear, therefore, could not rule out the malignancy. Since she had risk factors for hepatocellular carcinoma, abdominal ultrasonography was performed for further evaluation. But abdominal ultrasonography also showed atypical finding. The confirmative diagnosis could be done by dynamic magnetic resonance imaging (MRI) using primovist®, which is an innovative liver cell-specific contrast medium. Dynamic MRI presented peripheral globular enhancement and a centripetal fill-in pattern, confirmatory findings of hepatic hemangioma, on the delayed image. The patient got relief from abdominal pain and diarrhea during admission, now is being followed-up at a general out-patient clinics. Conclusions: Hemangiomas with atypical abdominal CT and ultrasonographic findings in patients with high risks of hepatocellular carcinoma can be easily characterized with primovist-enhanced dynamic MRI.

폐암세포에 대한 附子 추출물의 독성 효과

권강범,김은경,문형철,송용선,류도곤 한국전통의학연구소 2006 한국전통의학지 Vol.15 No.1

The aim of this study was to investigate the cytotoxic effect and its mechanism on Radix Aconiti(RA) extract in lung cancer cell lines. RA extract treatment decreased the cell viability in a dose-dependent fashions in lung cancer cells including A549, H460, H23 and H157 cells. Many investigators reported that A549 and H460 cells expressed wild-type p53, but H23 and H157 cells preserved mutated p53. After treatment with RA extract in A549 and H460 cells, we measured the expression of p53 protein levels using Western blot, analysis. In both cells treated with RA extracts, p53 protein expressions were increased in a dose-dependent manner. In our experiments, RA extracts also have cytotoxic effects in H23 and H157, which have mutated p53. Treatment with RA extract decreased bcl-2 protein expressions in both cells. These results suggest that RA extracts have cytotoxic effects via p53 expression increase and bcl-2 inhibitable pathways in A549, H460 cells and H23, H157 cells, respectively.

림프질 전이가 있는 하인두암과 하부식도암의 진단에 활용된 내시경초음파 유도하 Trucut 생검 1예

광명옥,이정환,문정섭,김유선,류수형,총배천,김형훈,김현태 仁濟大學校 白病院 2010 仁濟醫學 Vol.31 No.-

The incidence of double primary cancer is about 10% in all kinds of cancers. Double primary cancer is usually accompanied by gastrointestinal cancer. Esophageal cancer is supposed to be frequently accompanied by squamous cell carcinoma of the head and neck or the upper respiratory tract, because of such common carcinogens as smoking and alcohol ingestion. Esophageal cancer and hypopharyngeal cancer are usually diagnosed by esophagogastric endoscopy with biopsy. We performed endoscopic ultrasound-guided Trucut biopsy(EUS-TCB) to diagnose a mediastinal mass in a 49 year-old patient, who visited our hospital because of voice change. During procedure, we accidently found enlarged celiac lymph node, and obtained tissue from the mediastinal lymph node and the celiac lymph node. We confirmed double primary cancer of squamous cell carcinoma in the esophagus and the hypopharynx via esophagogastric endoscopy.

In Vitro Plant Regeneration from Root, Petiole, and Leaf Explants of Hibiscus syriacus L.

Sun-Hee Ryu,Sang-Gyu Seo,Bong-Kyu Kim,Jeong-Eun Lee,Sun-Hyung Kim 한국원예학회 2012 한국원예학회 학술발표요지 Vol.2012 No.10

A Case of Dramatic Complete Recovery after Oral Prednisolone Treatment in Dictamnus Dasycarpus-Induced Toxic Hepatitis

( Hyung Rae Sohn ),( Soo Hyung Ryu ),( Seung Hye Heo ),( Sun Young Kim ),( Jin Nam Kim ),( You Sun Kim ),( Jeong Seop Moon ) 대한내과학회 2011 대한내과학회 추계학술발표논문집 Vol.2011 No.1

Introduction: Dictamnus dasycarpus is one of the most common causes of drug-induced hepatitis in South Korea. Generally, most patients with drug-induced toxic hepatitis can fully recover after cessation of causative agents and supportive care. However, there has been some cases of Dictamnus dasycarpus-induced toxic hepatitis with progression to fulminant hepatitis and even death. We introduce a case of dramatic complete recovery from Dictamnus dasycarpus-induced severe toxic hepatitis after oral predinisolone treatment. Case: A 78-year-old woman was admitted with jaundice. She had consumed a decoction made by boiling down the root of Dictamnus dasycarpus, 1L per day for recent 3 months. Besides that, she did not have any medical and drug history. In-hospital laboratory test results are as follows: AST/ALT 1607/996 IU/L, total bilirubin 21.6 mg/dl, direct bilirubin 16.9 mg/dl, protein/albumin 5.8/3.5 g/dl, ALP 164 IU/L, r-GTP 47 IU/L, PT INR 1.03, and aPTT 39.6 seconds. All hepatic viral markers were negative. We diagnosed Dictamnus dasycarpus-induced toxic hepatitis as RUCAM scored 6. Even though interruption of taking Dictamnus dasycarpus for 10 days, total bilirubin increased up to 34 mg/dl. We decided to try oral prednisolone before consideration of liver transplantation. After start of oral prednisolone 40 mg per day, she showed a dramatic improvement in the clinical course and laboratory tests. Continued step-down prednisolone therapy for two months made her liver function test almost normal; total bilirubin was 2.2 mg/dl and AST/ALT was 27/28 IU/L. Discussion: Oral prednisolone treatment may be helpful and recommendable in clinically serious cases of Dictamnus dasycarpus-induced toxic hepatitis which are not respond to cessation of Dictamnus dasycarpus and best supportive care.

Comparison of Clinical Features and Laboratory Findings of Acute Hepatitis A in relation to Peak Total Bilirubin Level (초)

( Hyung Hun Kim ),( Soo Hyung Ryu ),( Hyun Tae Kim ),( Pei Chuan Tsung ),( Hyung Rae Sohn ),( Jung Hwan Lee ),( You Sun Kim ),( Jeong Seop Moon ) 대한간학회 2010 Clinical and Molecular Hepatology(대한간학회지) Vol.16 No.3(S)

해방 이후 현대 교육의 이상적 인간상 탐색 -전환기, 산업화 시기, 민주화 시기를 중심으로-

류형선 ( Hyung Sun Ryu ),지준호 ( Chun Ho Chi ) 한국철학사연구회 2014 한국 철학논집 Vol.0 No.43

본 연구는 해방 이후 현대 교육의 이상적 인간상을 살펴보기 위하여 우선 해방 이후에서 90년대에 이르는 시기를 광복 이후 분단까지의 ‘전환기’와, 경제성장을 통한 현대 국가 발전의 기반이 된 ‘산업화 시기’, 그리고 다양한 계층의 사람들이 정치·경제·사회 참여를 요구하는 ‘민주화 시기’의 세 시기로 구분하고, 각 시기의 특성에 대해 정치·경제·사회·문화등 다양한 측면에서의 접근을 시도하였다. 특히, 교육적 인간상의 추출을 위하여 이들 각 시기의 주요 가치를 탐색함으로써 이와 관련한 각 시기별 인간상을 고찰하였다. 시기별로 나타나는 주요가치와 인재상은 다음과 같다. 전환기의 주요가 치로는 예의와 규범을 제시할 수 있으며, 추구하는 인재상은 무실역행(務實力行)하는 자세가 강조되는 실천적 지식이었다. 산업화 시기의 주요가 치로는 성실, 근면, 자조, 협동을 제시할 수 있으며, 추구하는 인재상은 경제발전에 필수적이고 강력한 직업능력을 갖춘 기능인이었다. 민주화의 주요가치로는 참여, 평등, 공존을 제시할 수 있으며, 추구하는 인재상은 경제성장의 둔화라는 위기감 속에서 국가의 생존과 번영을 위하여 이바지하는 우수한 과학인재상이었다. 각 시기별 인재상은 실용적이면서도 실천적인 유형의 인간상이 드러나고 있으며 공동체적 덕성을 중시하고 있는데, 이는 전통적인 가치관의 연속선상에서 시기별 특징을 보여주고 있는 대목이기도 하다. The purpose of this study was to explore the changes of right people for society on the period from liberation in 1945 to democracy in the late 1990s. Those periods classified into ‘Transitional Era’, Industrial Era and ‘Democracy Era’ based on historical events significantly influenced the changes of value system of Korean people or Korean society. In this study, not only main values and right people for society but also the way of changing value system in those periods were suggested by investigating factors of politics, economy and society. The results are as follows : Main values and right people for society on each period were as follows : In Transitional Era, main values were manners and social norms, and right people for this period were practical intellectuals pursuing the principle of action-oriented truth-and- knowledge-seeking. In Industrial Era, main values were sincerity, diligence, self-help and collaboration, and right people for this period were skilled man having occupational ability which was essential for economic development. In Democracy Era, main values were sincerity, participation, equality and coexistence, and right people for this period were scientific talented man who can make the survival of the country and prosperity in the crisis of the slowdown in economic growth A discussion of right people for each era, proposed that emphasis on the pragmatic and practical type of person in those days required, On the other hand, emphasized that were considered important of Community value.

기계설비 기술기준 및 유지관리기준 제정을 위한 방향 설정에 관한 연구

류형규(Hyung Kyou Ryu),최승혁(Seung Hyuck Choi),박선효(Sun hyo Park),진상기(Sang ki Jin),유호선(Ho Sun Yoo) 대한설비공학회 2020 대한설비공학회 학술발표대회논문집 Vol.2020 No.6