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모바일거래시스템의 사용자 중심 디자인 가이드라인 제안: 토스증권을 중심으로
조정민(Jeongmin Jo),이상원(Sangwon Lee) 한국HCI학회 2022 한국HCI학회 학술대회 Vol.2022 No.2
국내 온라인 증권거래 시장은 모바일거래시스템(Mobile Trading System, MTS)을 중심으로 성장을 거듭하고 있다. 그러나 기존 PC 기반 HTS(Home Trading System)와 차별화되는 MTS 만의 사용자 니즈를 충족하기 위한 인터페이스 디자인 설계 및 평가를 위한 연구는 부족한 실정이다. 이에 본 연구에서는 MTS 상황의 서비스 품질 요인 문헌들을 고객 만족, 재이용 의도, 모바일 인터페이스 디자인과의 유의미한 연관성을 기준으로 검토해 편리성, 정보성, 개인화의 3 가지 핵심 품질 요인을 도출하고, 이를 기반으로 MTS 의 사용자 중심 디자인 가이드라인을 마련하였다. 또한 가이드라인의 적용가능성을 확인하기 위해 선도사례인 토스증권을 선정해 분석하고 개선 방안을 제안하였다. 이를 통해 모바일거래시스템 인터페이스를 설계하고 평가할 때 본 연구의 가이드라인을 성공적으로 참조할 수 있음을 확인할 수 있다.
인터넷 공동체 기반 국내 개인제조 지원 정보시스템 체계 개발
조정민(Jeongmin Jo),도남철(Namchul Do) (사)한국CDE학회 2017 한국CDE학회 논문집 Vol.22 No.4
This paper proposes architecture of a supporting information system for personal manufacturing. It is based on integrated product data management (PDM) and Internet communities, and limited to domestic manufacturers. Personal manufacturing or fabrication is related to intelligent software for product development, widespread social media for communications among dispersed participants and emerging production machines such as 3D printers for highly personalized production. To provide the architecture, this study begins with survey on domestic cases of supporting tools for personal manufacturing and associated collaborations among participants including outside experts. Using the case studies, this paper proposes a requirement model for supporting information systems and an information system architecture responding the requirement model. To show feasibility of the proposed concept, it implemented the architecture as a prototype of a supporting information system for personal manufacturing and apply it to design and manufacture of example products.
전동차용 보조전원장치 경량화를 위한 HF DC/DC 컨버터에 관한 연구
조정민(Jeongmin Jo),한영재(YoungJae Han),이창영(ChangYoung Lee),정현승(HyunSeung Jeong),정상용(SangYong Jung) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
One of the major trends in power electronics is increasing the switching frequencies. The advances in the frequency elevation have made it possible to reduce the total size and weight of the passive components such as capacitors, inductors and transformers in the DC/DC converter and hence to increase the power density. The dynamic performance is also improved. This document describes several aspects relating to the design of resonant DC/DC converter operating at high frequency(10㎑) and the converter topologies and the control method, which result in soft switching, are discussed.
( Jeongmin Lee ),( Hye Lim Park ),( Kwanhoon Jo ),( Min-hee Kim ),( Ja Seong Bae ),( Sohee Lee ),( Chan Kwon Jung ),( So-lyung Jung ),( Dong-jun Lim ) 대한갑상선학회 2021 International Journal of Thyroidology Vol.14 No.1
Background and Objectives: Fine needle aspiration cytology (FNAC) combined with washout thyroglobulin (Tg) measurement is the gold standard for the evaluation of metastatic lymph nodes (LNs) in thyroid cancer. However, few studies have assessed the clinical outcomes of discordant results between FNAC and washout Tg based on surgery status and follow-up imaging in real-world practice. Materials and Methods: A total of 707 LNs in 512 patients who underwent FNAC and washout Tg measurements from 2015 to 2017 were analyzed. The final LN outcomes were confirmed through postoperative histology, or through metastatic FNAC findings combined with high washout Tg level, follow-up imaging studies, or repeat FNA, if LNs were not dissected. Results: The cut-off values of washout Tg for indicating LN metastasis in preoperative and postoperative LNs were 9.6 ng/mL and 2.1 ng/mL. The diagnostic accuracy was improved by applying washout Tg according to surgery status and the results of discordant rate was reduced, Discordant between results of FNAC with washout Tg and final outcome were 9.2% (27/295) of preoperative LNs and 8.7% (36/412) of postoperative LNs. Due to inconclusive results, unnecessary neck dissection can occur in 13.9% (36/259 dissected cases). Conclusion: To improve diagnostic accuracy, cut-off values of washout Tg should be applied depending on surgery status. New biomarkers in washout fluid is necessary to resolve discordant findings.
Development of autoimmune hepatitis in a psoriasis patient without immunosuppressive therapy
( Wonyong Jo ),( Young-sun Suh ),( Sang-il Lee ),( Yun-hong Cheon ),( Jeongmin Hong ),( Sang Su Lee ),( Ji Eun Kim ),( Gyung Hyuck Ko ),( Hyun-ok Kim ) 대한간학회 2017 Clinical and Molecular Hepatology(대한간학회지) Vol.23 No.2
We present a case of a 65-year-old man with psoriasis who developed autoimmune hepatitis (AIH) without receiving immunosuppressive therapy with either anti-tumor necrosis factor-α or methotrexate. The AIH had completely resolved at 2 months after prednisolone and azathioprine therapy. This case confirms the need to consider AIH in psoriasis patients who experience new elevations in liver enzymes. To our knowledge, this is first description of the development of AIH in an immunosuppressant-naive patient with psoriasis. (Clin Mol Hepatol 2017;23:184-187)