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얼굴의 특징점을 이용한 3차원 움직임 추적에 관한 연구
李基敦,金種熙 호서대학교 공업기술연구소 2000 工業技術硏究所論文集 Vol.19 No.-
In this paper 3-dimensional feature points with 2-dimensional image of human face are eventually extracted. For the 2-dimensional image, avi file is created as a transfer medium for real-time movie transfer using 2 CCD cameras. The coarse-to-fine method is applied to minimize matching error when extracting feature-point of a face. By stereo-matching between side and front image, 3-dimensional data are extracted. As utilizing those extracted 3-dimensional data, various 3D graphic package will be connectable. With two usb CCD cameras, 2-dimensional is still received image. With movements of 20 feature points from Side and front image, we extracted 3-dimensional feature-points and enabled 3-dimensional modeling. To minimize errors of 3-dimensional trace and matching error spread, Coarse-to fine method is applied.
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Anesthesia guidelines for COVID-19 patients: a narrative review and appraisal
Ong Sharon,Lim Wan Yen,Ong John,Kam Peter 대한마취통증의학회 2020 Korean Journal of Anesthesiology Vol.73 No.6
The coronavirus disease 2019 (COVID-19) pandemic has challenged health systems globally and prompted the publication of several guidelines. The experiences of our international colleagues should be utilized to protect patients and healthcare workers. The primary aim of this article is to appraise national guidelines for the perioperative anesthetic management of patients with COVID-19 so that they can be enhanced for the management of any resurgence of the epidemic. PubMed and EMBASE databases were systematically searched for guidelines related to SARS-CoV and SARS-CoV-2. Additionally, the World Federation Society of Anesthesiologists COVID-19 resource webpage was searched for national guidelines; the search was expanded to include countries with a high incidence of SARS-CoV. The guidelines were evaluated using the Appraisal of Guidelines for Research and Evaluation II tool. Guidelines from Australia, Canada, China, India, Italy, South Africa, South Korea, Taiwan, the United Kingdom, and the United States of America were evaluated. All the guidelines focused predominantly on intubation and infection control. The scope and purpose of guidelines from China were the most comprehensive. The UK and South Africa provided the best clarity. Editorial independence, the rigor of development, and applicability scored poorly. Heterogeneity and gaps pertaining to preoperative screening, anesthesia technique, subspecialty anesthesia, and the lack of auditing of guidelines were identified. Evidence supporting the recommendations was weak. Early guidelines for the anesthetic management of COVID-19 patients lacked quality and a robust reporting framework. As new evidence emerges, national guidelines should be updated to enhance rigor, clarity, and applicability.
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Eiam-Ong, Somchit,Nakchui, Yuyen,Chaipipat, Mookda,Eiam-Ong, Somchai Korean Society of ToxicologyKorea Environmental Mu 2018 Toxicological Research Vol.34 No.2
It has been demonstrated that vanadate causes nephrotoxicity. Vanadate inhibits renal sodium potassium adenosine triphosphatase (Na, K-ATPase) activity and this is more pronounced in injured renal tissues. Cardiac cyclic adenosine monophosphate (cAMP) is enhanced by vanadate, while increased cAMP suppresses Na, K-ATPase action in renal tubular cells. There are no in vivo data collectively demonstrating the effect of vanadate on renal cAMP levels; on the abundance of the alpha 1 isoform (${\alpha}_1$) of the Na, K-ATPase protein or its cellular localization; or on renal tissue injury. In this study, rats received a normal saline solution or vanadate (5 mg/kg BW) by intraperitoneal injection for 10 days. Levels of vanadium, cAMP, and malondialdehyde (MDA), a marker of lipid peroxidation were measured in renal tissues. Protein abundance and the localization of renal ${\alpha}_1-Na$, K-ATPase was determined by Western blot and immunohistochemistry, respectively. Renal tissue injury was examined by histological evaluation and renal function was assessed by blood biochemical parameters. Rats treated with vanadate had markedly increased vanadium levels in their plasma, urine, and renal tissues. Vanadate significantly induced renal cAMP and MDA accumulation, whereas the protein level of ${\alpha}_1-Na$, K-ATPase was suppressed. Vanadate caused renal damage, azotemia, hypokalemia, and hypophosphatemia. Fractional excretions of all studied electrolytes were increased with vanadate administration. These in vivo findings demonstrate that vanadate might suppress renal ${\alpha}_1-Na$, K-ATPase protein functionally by enhancing cAMP and structurally by augmenting lipid peroxidation.
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김슬옹(Kim Seul-Ong) 한국사회언어학회 2004 사회언어학 Vol.12 No.2
Kim, Seul-Ong. 2004. A Study of the New Categorization of Hangeul Names and their Social Meaning. The Sociolinguistics Journal of Korea 12(2). This paper suggests a new direction of making Hangeul names in view of the Hangeul(Korean Alphabet) cultural community. We newly organize the concept and category of Hangeul names which include names of a Chinese character written in Hangeul as much as the names of the original Korean vocabulary. This type of combination produces, for example, from “슬기(seul-gi)” and “지혜(chi-hye)”, “슬지(seul-chi), 슬혜(seul-hye), 기지(ki-chi), 기혜(ki-hye), 지슬(chi-seul), 지기(chi-gi), 혜슬(hye-seul), 혜기(hye-gi)”. Through this method, we will be able to gain the following results: (1) We can make more human names with Hangeul, (2) We will be able to overcome the dichotomy between Chinese characters and Hangeul, (3) We will be able to truly accomplish a cultural community using Hangeul writing system.
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Somchit Eiam-Ong,Yuyen Nakchui,Mookda Chaipipat,Somchai Eiam-Ong 한국독성학회 2018 Toxicological Research Vol.34 No.2
It has been demonstrated that vanadate causes nephrotoxicity. Vanadate inhibits renal sodium potassium adenosine triphosphatase (Na, K-ATPase) activity and this is more pronounced in injured renal tissues. Cardiac cyclic adenosine monophosphate (cAMP) is enhanced by vanadate, while increased cAMP suppresses Na, K-ATPase action in renal tubular cells. There are no in vivo data collectively demonstrating the effect of vanadate on renal cAMP levels; on the abundance of the alpha 1 isoform (α₁) of the Na, K-ATPase protein or its cellular localization; or on renal tissue injury. In this study, rats received a normal saline solution or vanadate (5 mg/kg BW) by intraperitoneal injection for 10 days. Levels of vanadium, cAMP, and malondialdehyde (MDA), a marker of lipid peroxidation were measured in renal tissues. Protein abundance and the localization of renal α₁-Na, K-ATPase was determined by Western blot and immunohistochemistry, respectively. Renal tissue injury was examined by histological evaluation and renal function was assessed by blood biochemical parameters. Rats treated with vanadate had markedly increased vanadium levels in their plasma, urine, and renal tissues. Vanadate significantly induced renal cAMP and MDA accumulation, whereas the protein level of α₁-Na, K-ATPase was suppressed. Vanadate caused renal damage, azotemia, hypokalemia, and hypophosphatemia. Fractional excretions of all studied electrolytes were increased with vanadate administration. These in vivo findings demonstrate that vanadate might suppress renal α₁-Na, K-ATPase protein functionally by enhancing cAMP and structurally by augmenting lipid peroxidation.
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Responding to Calls to Legalise Euthanasia and Physician-Assisted Suicide in Singapore
Ong Eng Koon,Lok Si Ying Andrea,Ang Jie,Lai Kah Ho,Foon Xiang Lin,Lalit Kumar Radha Krishna 이화여자대학교 생명의료법연구소 2019 Asia Pacific Journal of Health Law & Ethics Vol.12 No.2
Proponents of physician-assisted suicide and euthanasia (PAS/E) assert that mentally competent terminally ill patients experiencing ‘intractable’ physical and/or existential suffering with no means of alleviating this suffering should be afforded the right to end their lives at a time and place of their choosing. A significant obstacle to legalising PAS/E has been the slippery slope argument that posits that gradual abuse of PAS/E is inevitable, leaving vulnerable patient groups of patients susceptible to its use. To distance this practice from the slippery slope, proponents of PAS/E proffer the concept of “Medical Aid-In-Dying” (MAID) that boasts of strict criteria for its use and forward evidence that its use in Oregon and the Netherlands has revealed no evidence of vulnerable patients being coerced into having PAS/E. This paper assesses the position and the assertions brought by proponents for the legalization of MAID in Singapore using an evidenced based socioculturally sensitive approach to contextualise these arguments. Socioculturally, prevailing Confucian- inspired family-centric practices hinders informed consent and creates coercive influences upon the decision- making process that will hinder effective consent for MAID whilst clinical evidence highlights inherent inaccuracies within determinations of prognosis and intractability that compromise legitimate application of MAID. This paper highlights the need for socioculturally sensitive, evidenced-based evaluation of all extrapolated data to consider the impact of prevailing mores and laws upon its application within the local scene. Singapore’s culture, clinical practice and laws do not support use of MAID locally.
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Performance Expectation of Single Station PPP-RTK using Dual-frequency GPS Measurement in Korea
Ong, Junho,Park, Sul Gee,Park, Sang Hyun,Park, Chansik 항법시스템학회 2021 Journal of Positioning, Navigation, and Timing Vol.10 No.3
Precise Point Positioning-Real Time Kinematic (PPP-RTK) is an improved PPP method that provides the user receiver with satellite code and phase bias correction information in addition to the satellite orbit and clock, thus enabling single-receiver ambiguity resolution. Single station PPP-RTK concept is special case of PPP-RTK in that corrections are computed, instead of a network, by only one single GNSS receiver. This study is performed to experimentally verify the positioning accuracy performance of single baseline RTK level by a user who utilizes correction for a single station PPP-RTK using dual frequencies. As an experimental result, the horizontal and vertical 95% accuracy was 2.2 cm, 4.4 cm, respectively, which verify the same performance as the single baseline RTK.
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