• Annual Conference of KIPS
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• 2009.04a
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• pp.1323-1325
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• 2009

MIH(Multimedia Independent Handover)는 이종망간 연동을 위해 IEEE 802.21 WG에서 진행 중인 기술로서, 이종망간 핸드오버를 지원하기 위해 제안되었다. MIH에서 정의한 시그널 메시지들(LGD : Link Going Down, LD : Link Down)은 이동 단말의 현재 상태를 네트워크에 알려주는 역할을 수행한다. 그 중 LGD는 신호세기가 LGD 임계값 이하일 경우 발생하며 후보 AP 검색 및 최종 후보 AP 선택, 그리고 빠른 핸드오버를 위한 최종 후보 AP와의 선 인증 과정을 거친다. 이 후 LD가 LD 임계값 이하일 경우에 발생하며 이 때 실질적인 핸드오버 과정이 수행된다. 이동단말이 LGD 임계값과 LD 임계값 사이에 위치하는 경우, 즉 이종망 사이의 경합 구간에 위치하여 대기하는 경우에는 Ping-Pong Handover가 발생하며 반복적인 시그널 메시지 교환에 의한 오버헤드가 발생하게 된다. 본 논문은 LGD에서 수행되는 핸드오버 준비과정을 축소하고 대신 LD에서 담당함으로서 경합 구간에 위치한 이동단말에서의 오버헤드를 최소화할 수 있는 방안을 제시한다.

• Journal of Gastric Cancer
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• v.10 no.1
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• pp.1-4
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• 2010

Purpose: Gastric epithelial dysplasia (GED) was defined as "unequivocally neoplastic epithelium that may be associated with or give rise to invasive adenocarcinoma" and GED also represents a direct precursor of intestinal type adenocarcinoma of the stomach. The recommended treatment guidelines for GED in the medical literature are endoscopic mucosal resection (EMR) or surgery for high grade dysplasia (HGD) and annual endoscopic surveillance with biopsy for low grade dysplasia (LGD) The aim of this study was to determine the treatment plan for GED that is diagnosed by endoscopic biopsy. Materials and Methods: We enrolled 148 patients who were treated by endoscopic mucosal resection (EMR) or endoscopiccsubmucosal dissection (ESD) for GED: there were 63 patients with HGD and 85 patients with LGD and all of them were diagnosed by endoscopic biopsy from January 2006 to December 2008. The results of the final histopathologic reports after EMR or ESD were compared with the results of the endoscopic biopsies. Results: The final histopathologic results of the 148 patients with GED showed 49 (33.1%) patients with adenocarcinoma, 40 (27.0%) patients with HGD and 59 (39.9%) patients with LGD. Among the 63 patients with HGD, 34 (54.0%) patients had adenocarcinoma, 20 (31.7%) patients had HGD and 9 (14.3%) patients had LGD. For the 85 patients with LGD, 15 (17.6%) patients had adenocarcinoma, 20 (23.5%) patients had HGD and 50 (58.8%) patients had LGD Conclusion: Complete resection, including EMR or ESD, is needed for patients with GED diagnosed by endoscopic biopsy and they have HGD. For patients with LGD, EMR or ESD may be needed in addition to endoscopic surveillance with biopsy for making the correct diagnosis and proper treatment because of the possibility of adenocarcinoma.

• Journal of Korean Electronics
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• v.30 no.1
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• pp.47-50
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• 2010

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.4
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• pp.382-390
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• 2019

As there is severe competition in the global foldable display market, strategic technology planning is required. Patent analysis as a tool for technology planning has frequently been used due to data characteristics such as openness, formality, and detailed information. However, traditional patent analysis has various limitations such as quantitative approaches are limited in evaluating contents of patents and identifying core technologies of firms as they rely on number of patents, and qualitative approaches have time and cost problems as researchers have to investigate each patent on a case-by-case basis. In this research, we analyze core technologies of firms in the foldable display sector analyzing patent co-classification Network. Results show that the number of patent applications has rapidly increased since 2014, and 92% of these patents are held by two panel manufacturers, SDC and LGD, and two device manufacturers, SEC and LGE. Network analysis shows that the two panel manufacturers' core technologies are similar and two device manufacturers are notably different. This research provides implications to the sector. Moreover, this study provides unique results drawn from co-classification network analysis, and therefore, our research suggests patent co-classification analysis as an effective tool for technology planning.

• The Optical Journal
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• s.139
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• pp.34-35
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• 2012

한국후지제록스(대표 정광은, www.fujixerox.co.kr)는 지난 3월 15일 서울 중구 정동에 위치한 본사에서 기자간담회를 갖고 디지털 인쇄기 신제품 및 디지털 인쇄 전용지 프로디지털(pro-digital) 출시를 통해 디지털 인쇄시장 공략에 박차를 가할 계획이라고 밝혔다. 한국후지제록스가 선보인 '컬러 800 프레스'와 '컬러 1000 프레스 LGD(Low Gloss Dry Ink)' 신제품은 다양한 인쇄사업에 맞게 유연하게 구성할 수 있는 것이 강점이다. 컬러 1000 LGDI는 광택 없는 매트한 느낌의 코팅 효과를 옵션으로 제공한다. 또 무림페이퍼와 디지털 인쇄 전용지 '프로디지털'을 출시하고 전용지 시장도 공략하고 있다. 프로디지털은 토너 점착성이 높고 고온 인쇄 시 품질 불량을 방지한다.

• Proceedings of the KIPE Conference
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• 2015.11a
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• pp.113-114
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• 2015

본 논문은, 태양광 및 차세대 이동수단에 적용되는 리튬-이온 전지의 전기적 모델링를 수행하였다. 전지의 전기적 모델링을 통하여 충 방전 특성, 용량, 개방 전압, 내부 저항과 같은 전지의 특성을 모의함으로써, 다양한 환경에서 어플리케이션에 적용할 전지를 테스트해 볼 수 있다. 리튬-이온 전지는 LGD 18650 B4(2,600mAh) 모델을 사용하였으며, 실험과 시뮬레이션을 통하여 설계된 모델의 타당성을 검증한다.