한국과 미국에서의 병리조직검사 상대가치 비교연구

황일선,강유나,권건영,권선영,김상표,이상숙,정혜라,최미선 대한병리학회 2011 Journal of Pathology and Translational Medicine Vol.45 No.1

Background: Pathologic examination is a very important diagnostic procedure. It is the most important method to decide the therapeutic plan and to predict the prognosis of cancer patients. The Resource-Based Relative Value Scale (RBRVS) is a schema used to determine how much money medical providers should be paid. In Korea, a modified RBRVS has been used since the year 2000. Methods: We researched the July 2010 RBRVS for Korea and the US medicare. The individual Relative Evaluation Index (REI) is defined as the ratio of an individual RBRVS to the mean RBRVS. The REIs of pathologic examination in Korea and America were compared. Results: For an endoscopic biopsy specimen, the pathologic examination REI in Korea was 55.4% of the American REI. The Korean REI of a prostate biopsy (8 sites) was only 5.7% of the American REI. The Korean REI was 28.1% of the American REI for the hysterectomy for uterine myoma, and the Korean REI was 67.6% of the American REI for resection of stomach or colon cancer. Conclusions: The RBRVS of pathologic examination in Korea remains undervalued. Considering the importance of pathologic examination in medicine, the RBRVS in Korea should be increased.

흡입밸브 누설을 고려한 압축기 성능 해석

황일선,이영림 한국기계기술학회 2018 한국기계기술학회 학술대회논문집 Vol.2018 No.05

A study on two phase flows of linear compressors for the prediction of refrigerant leakage

황일선,오원식,박경배,이영림 대한기계학회 2015 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.29 No.11

Usage of linear compressors is on the rise due to their high efficiency. In this paper, leakage of a linear compressor has been studiedthrough numerical analysis and experiments. First, nitrogen leakage for a stagnant piston with fixed cylinder pressure as well as for amoving piston with fixed cylinder pressure was analyzed to verify the validity of the two-phase flow analysis model. Next, refrigerantleakage of a linear compressor in operation was finally predicted through 3-dimensional unsteady, two phase flow CFD (Computationalfluid dynamics). According to the research results, the numerical analyses for the fixed cylinder pressure models were in good agreementwith the experimental results. The refrigerant leakage of the linear compressor in operation mainly occurred through the oil exit and theleakage became negligible after about 0.4s following operation where the leakage became lower than 2.0x10-4 kg/s.

SSL을 이용한 웹기반 계층적 네트워크 관리 시스템의 설계 및 구현

황일선,이명선,유기성,김종근,조강홍,정진욱 한국융합보안학회 2002 융합보안 논문지 Vol.2 No.1

MSP(Management Service Provider) 사업을 위해서는 네트워크 관리 시스템은 로컬 네트워크뿐만 아니라 다른 네트워크를 통합적으로 관리하기 위해 관리 서버들 간에 정보를 주고받는다. 이때 사용되는 통신 회선은 여러 사용자가 사용하는 공유 회선이므로 제3자가 회선을 통해 전달되는 정보를 훔쳐볼 수 있다. 정보 중에는 관리자나 장비들의 중요한 정보가 포함되어 있기 때문에 이들 정보에 대한 보호가 필요하다. 일반적으로 통신 회선의 보안을 위하여 SSL(Secure Socket Layer)을 많이 사용하는데 네트워크 관리 시스템에서도 서버와 클라이언트 간에 통신이나 관리 서버들의 통신에 SSL을 사용하여 정보를 보호하고자 한다. Network management system exchanges information between management servers to manage other network as well as local network for MSP(Management Service Provider) business. Because communication line that is used here is communication line that several users use, other user can steal a important information that are passed through communication line. For these information include important information of administrator or equipments, These information should be protected. Usually it is use much SSL to security of communication and it wish to protect information using SSL in communication between management servers' or communication between server and client at network management system to use much SSL for security of communication.

중국의 과학기술연구망(CSTNet) 소개

황일선,Hwang, Il-Seon 한국과학기술정보연구원 2000 지식정보인프라 Vol.2 No.-

중국 과학기술연구망(CSNet)은 비영리망이며, 공익성을 추구할 뿐만 아니라 국가지식창조를 이루는 기초 네트워크시스템이다.

뇌척수액 세포검사에 의한 연수막 전이의 분석

황일선,송준선,공경엽 대한병리학회 2009 Journal of Pathology and Translational Medicine Vol.43 No.1

The confirmative diagnosis of leptomeningeal metastasis depends on detecting malignant cells on the cytologic examination of cerebrospinal fluid (CSF). The presence of leptomeningeal metastasis is a very important factor to determine the aggressiveness of treatment. We analyzed 273 cases that were diagnosed as malignancies on the CSF cytology. The most common metastatic carcinoma was lung cancer (76 cases, 27.8%). There were 49 cases (17.9%) and 40 cases (14.7%) of breast and stomach cancers, respectively. There were 49 cases (17.9%) of lymphoma and 40 cases (14.7%) of leukemia. There were 19 cases of other types of cancer (6.9%). For the cases of primary lung cancer, there were 60 cases (78.9%) of adenocarcinoma and 7 cases (9.2%) of squamous cell carcinoma, but only 4 cases (5.3%) of small cell carcinoma. For the case of breast cancer, all of those were invasive ductal carcinoma and 25 cases (51.0%) were grade 3. Diffuse large B-cell lymphoma was the most common type of all metastatic lymphomas (22 cases, 44.9%) and lymphoblastic lymphoma was the second most common (8 cases, 16.3%). In our hospital, the most common leptomeningeal metastasis was adenocarcinoma of the lung, and breast cancer and lymphoma were the second most common. On CSF cytology, malignancies that have a tendency towards CSF metastasis should be carefully examined for to select the proper treatment. The confirmative diagnosis of leptomeningeal metastasis depends on detecting malignant cells on the cytologic examination of cerebrospinal fluid (CSF). The presence of leptomeningeal metastasis is a very important factor to determine the aggressiveness of treatment. We analyzed 273 cases that were diagnosed as malignancies on the CSF cytology. The most common metastatic carcinoma was lung cancer (76 cases, 27.8%). There were 49 cases (17.9%) and 40 cases (14.7%) of breast and stomach cancers, respectively. There were 49 cases (17.9%) of lymphoma and 40 cases (14.7%) of leukemia. There were 19 cases of other types of cancer (6.9%). For the cases of primary lung cancer, there were 60 cases (78.9%) of adenocarcinoma and 7 cases (9.2%) of squamous cell carcinoma, but only 4 cases (5.3%) of small cell carcinoma. For the case of breast cancer, all of those were invasive ductal carcinoma and 25 cases (51.0%) were grade 3. Diffuse large B-cell lymphoma was the most common type of all metastatic lymphomas (22 cases, 44.9%) and lymphoblastic lymphoma was the second most common (8 cases, 16.3%). In our hospital, the most common leptomeningeal metastasis was adenocarcinoma of the lung, and breast cancer and lymphoma were the second most common. On CSF cytology, malignancies that have a tendency towards CSF metastasis should be carefully examined for to select the proper treatment.

Study on the performance of linear compressor with suction system shapes using a transient CFD model

황일선,이영림 대한기계학회 2022 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.36 No.4

Many studies have been conducted to improve linear compressor performance, but studies using transient CFD (computational fluid dynamics) models are still insufficient. Therefore, in this study, changes in compressor performance depending on the shape of the suction system was investigated with a transient axisymmetric CFD model which utilizes an empirical temperature distribution. In addition, the compressor EER (energy efficiency ratio) was experimentally measured and then compared with the EER obtained by numerical analysis. The results of the numerical analysis showed that cooling capacity increased when the suction resistance was decreased by holes in the area where the refrigerant flow was stagnant. In addition, even when the suction resistance increased, the EER increased since the compression work decreased further. Finally, the EER change predicted by the CFD model was quantitatively different from the experimental result, but qualitatively agreed well.

세계 각국의 고성능연구전산망 동향

황일선,Hwang, Il-Seon 한국과학기술정보연구원 2001 지식정보인프라 Vol.4 No.-

각 대학을 비롯하여 연구소들이 속속 인터넷에 연결되어 인터넷을 이용하여 정보를 교환하므로 연구전산망으로서의 인터넷이 지니는 중요성은 더욱 커졌으며, 또한 인터넷에 대한 새로운 기술과 응용 서비스를 개발하고 보급하기 위해서도 고성능연구전산망으로서의 인터넷에 대한 요구가 증대하고 있다.

후두에 발생한 과립세포종 3예

황일선,황정은,최승호,남순열,조경자 대한병리학회 2007 Journal of Pathology and Translational Medicine Vol.41 No.4

Granular cell tumors are rare and usually benign neoplasms that can occur in various parts of the body. We recently encountered three cases of granular cell tumor of the larynx; here, we present their clinicopathologic features, along with a review of reported Korean cases.

COF 리드 배열 집적도 향상을 위한 비선형 구조해석

황일선,박상준,라재성,이영림 한국기계기술학회 2015 한국기계기술학회지 Vol.17 No.1

In recent years, technology has been developed the way the volume of the portable communication device is reduced but its performance is maintained. The COF(Chip On Film) packaging method is used due to the densification of the lead pitch, especially for the display driver IC. During COF packaging, lead break and film detachment could occur by the high bonding temperature and pressure, and possibility for lead interference can emerge by deformation of leads. In this study, a new double-column arrangement of leads is considered to increase lead density further than the existing zigzag arrangement of leads, and nonlinear structural analysis was carried out to examine whether the interference can occur. The results showed that stress and deformation of the corner region appear relatively higher than those of central region, and interference did not occur by the lead strain for the double-column arrangement of leads with pitch of 25μm. Therefore, double-column lead arrangement can improve lead density by about 176% compared to the zigzag lead arrangement.