포스트 코로나 시대 플렉서블 러닝과 첨단기술 활용 중심의 의학교육 전망과 발전

박지혜,Park, Jennifer Jihae 연세대학교 의과대학 2021 의학교육논단 Vol.23 No.3

The coronavirus disease 2019 (COVID-19) pandemic made it necessary for medical schools to restructure their curriculum by switching from face-to-face instruction to various forms of flexible learning. Flexible learning is a student-centered approach to learning that has received interest in many educational sectors. It is a critical strategy for expanding access to higher education during the pandemic. As flexible learning includes online, blended, hybrid, and hyflex learning options, learners have the opportunity to select an instruction modality based on their needs and interests. The shift to flexible learning in medical education took place rapidly in response to the COVID-19 pandemic, and learners, instructors, and schools were not prepared for this instructional change. Through the lens of the technology acceptance model, human agency, and a social constructivist perspective, I examine students, instructors, and educational institutions' roles in successfully navigating the digital transformation era. The pandemic has also accelerated the use of advanced information and communication technologies, such as artificial intelligence and virtual reality, in learning. Through a review of the literature, this paper aimed to reflect on current flexible learning practices from the instructional design and educational technology perspective and explore emerging technologies that may be implemented in future medical education.

Toxicity testing of wastewater and inter-laboratory comparison based on Lemna minor root elongation

Jihae Park(박지혜),Eun-Jin Yoo(유은진),Kisik Shin(신기식),Soyeon Choi(최소연),Hojun Lee(이호준),Geonhee Kim(김건희),Stephen Depuydt(스테픈 데퓨잇),Jonas De Sager(요나스 데 세거),Taejun Han(한태준) 환경독성보건학회 2021 한국독성학회 심포지움 및 학술발표회 Vol.2021 No.5

The Lemna minor root regrowth test method is a toxicity test performed with very simple equipment and only one L. minor plant (two- to three-frond) in each culture well, cutting the roots before exposure and measuring the regrowth of the newly developed roots after three days. As a substrate for laboratory toxicity assays, L. minor has the advantages of small size, structural simplicity and rapid growth. Compared to the three internationally standardized methods, this bioassay is faster, simpler, more convenient and cheaper. It can be applied to a variety of sample types, including (a) individual chemicals, commercial products or known mixtures of chemicals, (b) industrial or urban freshwater effluents, elutriates or leachates and (c) surface freshwater or receiving waters. The test can be used alone or as part of a test battery to determine and monitor the toxic effects of individual substances or complex mixtures that may be harmful to aquatic life in freshwater ecosystems, and as a weight-of-evidence approach to determine the need for controlling discharges and setting effluent standards.

스마트 그리드에서 향상된 Homomorphism 을 이용한 안전한 데이터 애그리게이션

박지혜 ( Jihae Park ),최경 ( Kyung Choi ),도인실 ( Inshil Doh ),채기준 ( Kijoon Chae ) 한국정보처리학회 2011 한국정보처리학회 학술대회논문집 Vol.18 No.1

최근 그린 IT 에 대한 관심이 점차 고조되면서, 이 사업의 일환으로 저탄소, 녹색 성장을 위한 지능형 전력망인 스마트 그리드의 도입이 발 빠르게 진행되고 있다. 스마트 그리드를 통해 전력 공급자와 소비자의 양방향 통신으로 에너지 효율의 최적화가 가능하지만, 동시에 사이버 공격에 의한 개인정보의 노출위험에 대한 우려도 제기되고 있는 상황이다. 데이터의 안전한 전송을 위해 다양한 암호화 방식이 제안되고 있으며, 본 논문에서는 기밀성에만 초점을 맞춘 Homomorphic 암호화의 허점을 보완하기 위하여 additive Homomorphic 방식을 기반으로 하여 데이터 무결성을 보장할 수 있는 새로운 방식을 제안하였다. 이 메커니즘을 통해 데이터는 최종 목적지까지 안전하게 도달했으며, 위조 및 변조 되지 않았다는 것을 보장받을 수 있다.

Physiological and biochemical responses of Ulva pertusa to metal exposure

Geonhee Kim(김건희),Jihae Park(박지혜),Soyeon Choi(최소연),Hojun Lee(이호준),Taejun Han(한태준) 환경독성보건학회 2021 한국독성학회 심포지움 및 학술발표회 Vol.2021 No.5

The green alga Ulva is considered to be a simple, homogeneous algal form with little functional differentiation within the thallus. Functional differentiation of the thallus is a strategy that contributes to the survival of Ulva pertusa as an opportunistic alga. Although many ecotoxicity assessments have been conducted based on spore-forming properties of the marginal thallus parts, ecotoxicity using the middle parts of the thallus has rarely been achieved. Therefore, we investigated the response of the middle and marginal thallus region of Ulva pertusa to exposure of six heavy metals (Cu, Cr, Cd, Ni, As, Ag). Concentration-dependent reduction in disc size, Fv/Fm, ETRmax and pigment were observed with Ag being the most toxic to Ulva pertusa.

특발성 망막앞막수술 후 중심황반두께 및 황반하 맥락막두께의 2년 변화

최우석(Woo Seok Choi),박지혜(Jihae Park),이규원(Kyoo Won Lee),강현구(Hyun Gu Kang) 대한안과학회 2021 대한안과학회지 Vol.62 No.12

목적: 특발성 망막앞막수술 후 중심황반두께와 황반하 맥락막두께의 2년 장기 변화를 알아보고자 한다. 대상과 방법: 유리체절제술과 백내장병합수술 후 2년 이상 경과 관찰한 특발성 망막앞막 환자 중 재발하지 않은 52안을 대상으로 빛간섭단층촬영에서 측정된 중심황반두께와 황반하 맥락막두께를 후향적으로 분석하였고, 정상 대조군과 비교하였다. 결과: 술 전 중심황반두께와 황반하 맥락막두께는 425.67 ± 84.67 μm와 257.56 ± 90.13 μm였다. 중심황반두께는 술 후 1년 372.17 ± 45.26 μm, 술 후 2년 363.15 ± 47.35 μm로 감소하였고(p<0.001), 황반하 맥락막두께도 술 후 1년 238.85 ± 84.85 μm, 술 후 2년 230.31 ± 87.95 μm로 감소하였다(p<0.001). 대조군에서 2년간의 중심황반두께는 유의한 변화는 없었고, 황반하 맥락막두께는 11.09 ± 22.36 μm 감소하였다(p=0.007). 반면 환자군은 중심황반두께와 황반하 맥락막두께가 62.52 ± 71.45 μm, 27.25 ± 41.97 μm 감소하여 대조군과 유의한 차이를 보였다(p<0.001, p=0.043). 술 전, 술 후 1년 중심황반두께가 얇을수록 각 시기의 최대교정시력이 좋았고(p=0.010, p=0.018), 술 후 2년 최대교정시력은 술 전 최대교정시력이 좋을수록, 술 전 중심황반두께가 얇을수록 좋았다(p<0.001, p<0.001). 결론: 특발성 망막앞막수술 후 2년간 경과 관찰 결과 중심황반두께와 황반하 맥락막두께는 감소하였다. Purpose: To evaluate changes in central macular thickness (CMT) and subfoveal choroidal thickness (SFCT) after phacovitrectomy over a 2-year period in idiopathic epiretinal membrane (ERM) patients. Methods: The records of 52 idiopathic ERM patients (52 eyes) who underwent phacovitrectomy, without recurrence of the condition over a 2-year follow-up period, were reviewed retrospectively. Changes in CMT and SFCT, as measured by optical coherence tomography, were analyzed and compared with those of a normal control group over a 2-year period. Results: The mean preoperative CMT and SFCT were 425.67 ± 84.67 and 257.56 ± 90.13 μm, respectively. Postoperative CMT was reduced significantly to 372.17 ± 45.26 μm at 1 year and 363.15 ± 47.35 μm at 2 years (p < 0.001). SFCT at 1 and 2 years postoperatively was significantly reduced to 238.85 ± 84.85 and 230.31 ± 87.95 μm, respectively (p < 0.001). In the control group, there was no significant change in CMT; however, the SFCT decreased by 11.09 ± 22.36 μm during the 2-year follow-up (p = 0.007). In contrast, in the patient group, CMT and SFCT decreased by 62.52 ± 71.45 and 27.25 ± 41.97 μm, respectively, showing a significant difference from the control group (p < 0.001 and p = 0.043, respectively). Both before surgery and at 1 year postoperatively, the thinner the CMT, the better the best-corrected visual acuity (BCVA) (p = 0.010 and p = 0.018, respectively). A better postoperative BCVA at 2 years was associated with a thinner CMT and better BCVA before surgery (p < 0.001 and p < 0.001, respectively). Conclusions: Following a phacovitrectomy procedure, ERM patients showed significant reductions in both the CMT and SFCT at the 2-year follow-up.

Development of photosynthesis biosensor for drinking water quality monitoring

Soyeon Choi(최소연),Jihae Park(박지혜),Hojun Lee(이호준),Geonhee Kim(김건희),Taejun Han(한태준) 환경독성보건학회 2021 한국독성학회 심포지움 및 학술발표회 Vol.2021 No.5

The unprecedented increase in anthropogenic pollution of the aquatic environment has made the development of sensitive, cost-effective and adaptable early warning systems for monitoring chemical pollutants absolutely crucial. Biosensors based on aquatic plants could provide a cost-effective alternative for environmental risk analysis, as they can provide rapid information on toxicity in case of pollution, while assessing the hazardous effects of pollutants on the aquatic ecosystem. In this work, an optical biosensor based on chlorophyll-a fluorescence was developed to monitor aquatic pollutants specifically for drinking water quality. The response of the biosensor was investigated using Spirodela polyrhiza, also known as duckweed, as a test species over a1-h acute exposure to atrazine (2-chloro-4-ethylamino-6-isopropylamino-1,3,5-triazine), which is the most widely used herbicide worldwide to control hardwood and grass weeds. The detection concentration was 0.6 mg/L, which was calculated using a specific equation based on the acceptable daily intake (ADI; μg/kg/day) of the WHO drinking water guideline, standard weight (kg) and daily drinking water intake (L/day). Chl-a fluorescence of S. polyrhiza at the detection concentration of 0.6 mg/L decreased by more than 20% compared to the control.

WDM-PON 기반 무선 가입자망에서 Cell-Clustering 에 의한 이동성 관리 방안

김영준(Youngjun Kim),박지혜(Jihae Park),임태형(Taehyong Lim),Tri M. Nguyen,박진우(Jinwoo Park) 한국통신학회 2011 한국통신학회 학술대회논문집 Vol.2011 No.2

발달장애인 대상 공공부조 지원의 효과성 제고를 위한 재산관리 지원서비스 도입의 필요성

제철웅 ( Cheolung Je ),박지혜 ( Jihae Park ),김원경 ( Wonkyung Kim ),주혜림 ( Hae Rim Joo ) 한양대학교 법학연구소 2020 법학논총 Vol.37 No.4

장애인권리협약 발효 이후 발달장애인의 탈시설, 지역사회 통합이 중요한 국가 정책목표의 하나로 되고 있다. 발달장애인이 지역사회에서 생활하기 위해서는 주거, 활동보조만이 아니라, 사회생활에서 직면하는 다양한 사회적 장벽을 헤쳐 나갈 수 있는 지원이 있어야 한다. 그 지원은 동 협약 제12조의 의사결정지원이어야 할 것이다. 이런 관점에서 보면, 발달장애인이 직면한 사회적 장애인 재산관리의 취약성을 극복하고 지역사회에서 생활하기 위해서는 발달장애인의 재산관리를 지원하는 별도의 서비스가 정당한 편의제공으로 있어야만 할 것이다. 그 서비스는 발달장애인을 대신하여 재산을 관리하는 것이 아니라, 발달장애인이 보유한 재산을 안전하게 관리하면서 더 효과적으로 사용할 수 있도록 지원하는 서비스여야 할 것이다. 이런 문제의식 하에 이 논문은 의사결정대행제도로 이미 비판을 받고 있는 후견제도만이 아니라 기존의 대리수령제도, 계좌관리인제도의 현황을 조사하였다. 기존의 제도가 발달장애인의 재산을 안전하게 관리해서 효과적으로 사용될 수 있게 하는 데에는 한계가 있다는 점을 확인한 후, 이를 극복하기 위해서는 발달장애인 재산관리 지원서비스를 제도화시킬 수 있는 방안을 제안하였다. 발달장애인 재산관리 지원서비스는 특히 공공부조 수급자인 발달장애인을 위해(거기에 한정되지는 않지만) 그의 재산을 효과적으로 활용할 수 있도록 설계되어야 한다고 제안한다. 이를 위해 발달장애인 또는 그 부모의 재산을 이전받아 이를 집합시켜 관리함으로써 재산관리의 효율성을 높이고, 관리재산을 발달장애인의 개인적 필요와 욕구에 맞게 효과적으로 사용할 수 있도록 지원하는 것이어야 한다고 제안한다. 그 목적을 달성하기 위해 이 논문은 발달장애인 권리보장 및 지원에 관한 법률 제3장에 관련 법률규정을 입법을 할 것을 제안하고 있다. This paper aims at proposing enactment of support services of property management by persons with developmental disabilities to enhance the effectiveness of public benefit programs. In order to design an effective support services for property management by persons with developmental disabilities, this paper conducted surveys and interviews presenting the current status of their property management, focused on public benefit. Specifically, we surveyed people with developmental disabilities living in both disability institutions and local communities. Then this paper studied the policies of developed countries, specifically the U.S. and Japan, that support the property management by persons with disabilities in similar situation. This paper found that, compared to U.S. and Japan policies, there are representative payees system and “guardianship system” in Korea, which prioritize keeping the property of persons with developmental disabilities safe rather than actively using their property. This paper argues that a convenient property management policy, which focuses on supporting persons with developmental disabilities in making autonomous decisions safely and effectively rather than on keeping their property safe on their behalf. In order to ensure the self-determination of persons with developmental disabilities, this paper suggests that the property of persons with developmental disabilities or their parents should be transferred to property management support services so as to manage their property and support them to effectively use managed property according to their individual needs and desires. Effective use, in this case, suggests that the collectively managed funds perform the same function as consumer cooperative and provide items and services for people with developmental disabilities at an affordable price. In order to implement the suggested property management support services, this paper suggests that the cooperation of several entities including the Ministry of Health and Welfare, a trustee institution, regional support organizations, and individual social workers and other supp orters of people with developmental disabilities should be ensured. For this purpose, this paper makes a legislation proposal

영국 정신능력법의 지원의사결정관련 쟁점과 함의 - 발달장애인을 중심으로

김미옥(Kim, Miok),김고은(Kim, Goeun),박지혜(Park, Jihae) 한국사회복지행정학회 2021 한국사회복지행정학 Vol.23 No.2

PMIPv6 에서 flow 단위의 서비스 연속성 지원 방안

임태형(Taehyong Lim),Tri M. Nguyen,박지혜(Jihae Park),김영준(Yongjun Kim),박진우(Jinwoo Park) 한국통신학회 2010 한국통신학회 학술대회논문집 Vol.2010 No.6