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AMOLED 에이징 챔버 신호 생성기 중앙서버 관리 시스템
김한길,이병권,정회경,Kim, Hankil,Lee, Byungkwon,Jung, Heokyung 한국정보통신학회 2017 한국정보통신학회논문지 Vol.21 No.6
최근 디스플레이 기술 발전과 함께 AMOLED(Active Matrix OLED) 패널(Panel)의 생산과 수요가 급증하고 있다. AMOLED 패널은 기본적으로 LCD와는 다르게 백라이트(Backlight)를 필요로 하지 않아 적은 소비전력으로 선명도 있는 영상의 출력이 가능하다. 따라서 세계적으로 AMOLED 시장이 커지고 있다. 이에 따라 생산에 필요한 검사 장치의 수요도 확산되고 있다. AMOLED 패널 에이징(Aging) 시스템의 검사 장치는 MES(Manufacturing Execution System), MIS(Management Information System)와 연동하여 운영되며, 네트워크 환경을 구축하는 것이 효율적이다. 패널 에이징에 사용되는 검사 장치는 다중 신호를 출력하는 기능을 가진 신호 생성기(Pattern Generator)이다. 다수개의 신호 생성기를 운영하기 위해서는 효율적인 설계가 필요하다. 이를 해결하기 위해 본 논문에서는 신호 생성기를 원격으로 통합 제어하기 위한 방법과 AMOLED 패널을 구동시키기 위한 방법을 제안하고 이를 구현하였으며, 이에 따른 타이밍과 전원 설정 결과를 제시하였다. Recently, with the development of display technology, AMOLED(Active Matrix OLED) panel production and demand are increasing. Unlike LCD, AMOLED panel basically does not need backlight, so it can output clear images with low power consumption. Therefore, the AMOLED market is growing globally. Accordingly, the demand for inspection devices required for production is also expanding. The inspection device of the AMOLED panel aging system operates in conjunction with MES(Manufacturing Execution System) and MIS(Management Information System), and it is efficient to construct network environment. The inspection device used for panel aging is a pattern generator capable of outputting multiple signals. Efficient design is required to operate multiple signal generators. To solve this problem, the proposed system proposed a method for remotely controlling the signal generator remotely and a method for driving the AMOLED panel. And the timing and power setting results are presented.
Toxocara canis Mimicking a Metastatic Omental Mass from Sigmoid Colon Cancer: A Case Report
김한길,양정욱,홍순찬,이영준,주영태,정치영,이진권,곽승진 대한대장항문학회 2018 Annals of Coloproctolgy Vol.34 No.3
Toxocara canis is an important roundworm of canids and a fearsome animal parasite of humans. Human infections can lead to syndromes called visceral larva migrans (VLM), ocular larva migrans, neurotoxocariasis, and covert toxocariasis. VLM is most commonly diagnosed in children younger than 8 years of age, but adult cases are relatively frequent among those infected by ingesting the raw tissue of paratenic hosts in East Asia. This research reports the case of a 59-year-old man with sigmoid colon cancer, who visited our institution for surgery. An intraperitoneal mass was found on preoperative computed tomography, and it was thought to be a metastatic mass from sigmoid colon cancer. A postoperative histologic examination and serum test showed eosinophilic granuloma due to toxocariasis. Diagnosis of VLM is often difficult and highly suspicious in adults. Researchers suggest, although rarely, that VLM be included in the differential diagnosis as a cause of intraperitoneal tumors.
김한길,정상호,이영준,하우송,최상경,홍순찬,정은정,주영태,정치영,박태진,박지호 대한위암학회 2013 Journal of gastric cancer Vol.13 No.1
Purpose: The aims are to: (i) display the multidimensional learning curve of totally laparoscopic distal gastrectomy, and (ii) verify the feasibility of totally laparoscopic distal gastrectomy after learning curve completion by comparing it with laparoscopy-assisted distal gastrectomy. Materials and Methods: From January 2005 to June 2012, 247 patients who underwent laparoscopy-assisted distal gastrectomy (n=136) and totally laparoscopic distal gastrectomy (n=111) for early gastric cancer were enrolled. Their clinicopathological characteristics and early surgical outcomes were analyzed. Analysis of the totally laparoscopic distal gastrectomy learning curve was conducted using the moving average method and the cumulative sum method on 180 patients who underwent totally laparoscopic distal gastrectomy. Results: Our study indicated that experience with 40 and 20 totally laparoscopic distal gastrectomy cases, is required in order to achieve optimum proficiency by two surgeons. There were no remarkable differences in the clinicopathological characteristics between laparoscopy-assisted distal gastrectomy and totally laparoscopic distal gastrectomy groups. The two groups were comparable in terms of open conversion, combined resection, morbidities, reoperation rate, hospital stay and time to first flatus (P>0.05). However, totally laparoscopic distal gastrectomy had a significantly shorter mean operation time than laparoscopy-assisted distal gastrectomy (P<0.01). We also found that intra-abdominal abscess and overall complication rates were significantly higher before the learning curve than after the learning curve (P<0.05). Conclusions: Experience with 20~40 cases of totally laparoscopic distal gastrectomy is required to complete the learning curve. The use of totally laparoscopic distal gastrectomy
김한길,김수진,이환규,정회경,Kim, Han-Kil,Kim, Su-Jin,Lee, Hwan-Kyu,Jung, Hoe-Kyung 한국정보통신학회 2014 한국정보통신학회논문지 Vol.18 No.3
스마트폰 사용이 일반화되고 스마트워크, BYOD(Bring Your Own Device) 트렌드가 확산되면서 국내 무선랜 사용이 가속화되고 이로 인해 보안위협도 크게 증가하고 있다. 시스코시스템즈, 아루바네트웍스 등 무선랜 업체들은 WIPS(침입탐지), MDM(모바일단말관리), DLP 등 다양한 제품들을 출시해오고 있지만 비용이나 관리적인 측면에서 소규모 기업에서는 도입하기가 쉽지 않다. 본 논문에서는 고가의 H/W 장비를 도입하지 않고 무선랜 환경에서 패킷분석, AP, Station관리, 보안취약점을 분석할 수 있는 무선랜 침입탐지 시스템을 제안하고자 한다. Smartphones have become commonplace to use smart, BYOD (Bring Your Own Device) spread the trend of domestic WLAN use is intensifying as a result, the security threat will be greatly increased. Even though WLAN vendors such as Cisco Systems Inc,. Aruba networks released WIPS, MDM, DLP etc, however, these solutions can not be easily introduced for small business due to high cost or administrative reasons. In this paper, without the introduction of expensive H/W equipment, in WLAN environments, packet analysis, AP, Station management, security vulnerabilities can be analyzed by the proposed intrusion detection system.