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Offline-Onsite-Online (3O) 관객참여형 XR 전시: 개발사례 ‘암모나이트를 만나다’
김범주(Beomju Kim),임규나(Gyuna Lim),이찬혁(Chanhyeok Lee),조지훈(Jihoon Cho),박진아(Jinah Park) 한국HCI학회 2023 한국HCI학회 학술대회 Vol.2023 No.2
확장현실 기술에 기반한 상호작용 가능한 전시는 글과 그림으로만 정보를 제공하는 전통적 전시의 개념을 대체하고 있으나, 여전히 그 상호작용 요소가 단조로운 실정이다. 본 논문은 기존 전시의 한계를 극복하고자, 전시물과 관람객 간의 풍부한 양방향 상호작용을 제공하는 Offline-Onsite-Online(3O) 관객참여형 XR 전시를 제시한다. 이를 위해 기존 전시의 정보를 유지하며 관객에게 부가적인 의미와 정보를 전달하는 증강현실 기술을 활용한 현장(Onsite) 전시, 공간의 제약을 극복하여 어디서든 전시를 체험할 수 있는 가상현실 기반의 온라인(Online) 전시를 개발하였다. 또한 사용자의 확장현실 상의 상호작용 결과를 홀로그래피 기술을 통해 오프라인(Offline)에 전시하는 방법을 고안하여 사용자가 오프라인 전시의 소비자이자 생산자가 될 수 있도록 하였다. 제안된 방법은 한국자연사 박물관과의 협업을 통해 시범 전시 콘텐츠로 개발 및 시연되었다.
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Kang, Saetbyeol,Bae, Gyuna,Kim, Sang-Kyung,Jung, Doo-Hwan,Shul, Yong-Gun,Peck, Dong-Hyun Elsevier 2018 International journal of hydrogen energy Vol.43 No.24
<P><B>Abstract</B></P> <P>This study increased the surface area of a membrane by forming patterns on the Nafion resin membrane using a stainless steel mesh to enhance the performance of a direct methanol fuel cell (DMFC) because the triple-phase boundary is extended. Nafion resin (F-form (SO<SUB>3</SUB>F)) was used which has melt-moldability to form a stable surface pattern and to directly coat the catalyst layer by the bar-coating method. The performance (polarization and power density curves) and the resistance of the membrane-electrode assembly (MEA) were analyzed with a single cell and an impedance analyzer. The surface area of the patterned membranes was increased 1.99, 2.10, and 2.12 times compared to the flat membrane, and the power density also increased 12.9, 18.6, and 24.2% at 0.4 V, respectively. The performance of the MEA with the patterned membrane had a lower concentration polarization than that of the MEA with the flat membrane. The performance of the MEAs with the patterned membranes had a greater impact on the cathode side of the membrane than on the anode side. The results of these experiments offer a solution to the problem of a low performance of MEA, which is one of the disadvantages of DMFCs.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The catalyst layer was directly coated onto the patterned membrane (F-form (SO<SUB>3</SUB>F)). </LI> <LI> The surface area of the patterned membranes was increased 2.12 times. </LI> <LI> The power density of the MEAs with the patterned membranes was also increased 24.2%. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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Bae, Ah Hyun,Kim, Gyuna,Seol, Geun Hee,Lee, Seon Bong,Lee, Jeong Min,Chang, Wonseok,Min, Sun Seek Elsevier 2020 Journal of Ethnopharmacology Vol.250 No.-
<P><B>Abstract</B></P> <P><B>Ethnopharmacological relevance</B></P> <P>Ocimum basilicum L. is a perennial herb that has been used in traditional Asian Indian medicine for thousands of years as a natural anti-inflammatory, antibiotic, diuretic, and analgesic.</P> <P><B>Aim of the study</B></P> <P>The present study was conducted to investigate the analgesic effects of basil essential oil (BEO) in inflammatory pain models and identify underlying mechanisms. We further investigated whether BEO affects physiological pain and motor coordination.</P> <P><B>Materials and methods</B></P> <P>The analgesic effects of BEO were assessed in various mouse experimental pain models using formalin, acetic acid, heat, and carrageenan as stimuli. BEO was administered by intraperitoneal injection or inhalation. The involvement of various pathways in the analgesic effect of BEO was assessed by pretreating mice with selective pharmacological inhibitors, administered intraperitoneally. Opioid pathways were tested using the κ-opioid antagonist 5′-guanidinonaltrindole (GNTI; 0.3 mg/kg), δ-opioid antagonist naltrindole (NTD; 5 mg/kg) and μ-opioid antagonist naloxone (NAL; 8 mg/kg); nitric oxide (NO) pathways were tested using the NO synthase inhibitor N-nitro l-arginine methyl ester (L-NAME; 37.5 mg/kg) and NO precursor L-arginine (L-Arg; 600 mg/kg); and K<SUB>ATP</SUB> channel pathways were tested using the ATP-sensitive K<SUP>+</SUP> channel blocker, glibenclamide-hippuric acid (GHA, 2 mg/kg). Potential effects of BEO on motor coordination were assessed using a rotarod test.</P> <P><B>Results</B></P> <P>BEO exerted analgesic effects in all pain models. Notably, pretreatment with naltrindole, naloxone, or L-arginine significantly reduced the analgesic effects of BEO in the formalin test. BEO increased mean withdrawal latencies in a thermal plantar test at a high dose, but not at lower doses. BEO had no effect on motor coordination.</P> <P><B>Conclusions</B></P> <P>Our findings indicate that the analgesic effects of BEO are primarily mediated by delta- and mu-opioid pathways and further suggest that BEO has potential for development as an analgesic agent for the relief of inflammatory pain.</P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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