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Synthesis and characterization of carbon doped TiO₂ photocatalysts supported on stainless steel mesh by sol-gel method
JO. Tijani, OO. Fatoba, TC. Totito, WD. Roos, LF. Petrik 한국탄소학회 Carbon Letters 12 Pages
한국탄소학회 Carbon Letters 2017, Vol.22 6 48-59 (12 pages)
This study synthesized pure anatase carbon doped TiO₂ photocatalysts supported on a stainless steel mesh using a sol-gel solution of 8% polyacrylonitrile (PAN)/dimethylformamide (DMF)/TiCl₄. The influence of the pyrolysis temperature and holding time on the morphological characteristics, particle sizes and surface area of the prepared catalyst was investigated. The prepared catalysts were characterized by several analytical methods: high resolution scanning electron microscopy (HRSEM), energy... -
Carbon-allotropes: synthesis methods, applications and future perspectives
P. S. Karthik, A. L. Himaja and Surya Prakash Singh 한국탄소학회 Carbon Letters 19 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.4 1 219-237 (19 pages)
fields of science and technology. So as an honour to this marvellous element, we humans should know about its various forms of existence. In this review article, we shed light on all possible carbon-allotropes; similarities in their synthesis techniques and the starting materials; their wide range of possible availability; and finally, future perspectives and applications. A brief introduction is given on the types, structures, and shapes of the allotropes of carbon for a better understanding. -
Superhydrophobic carbon-based materials: a review of synthesis, structure, and applications
Long-Yue Meng, Soo-Jin Park 한국탄소학회 Carbon Letters 16 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.2 5 89-104 (16 pages)
Materials with appropriate surface roughness and low surface energy can form superhydrophobic surfaces, displaying water contact angles greater than 150°. Superhydrophobic carbon-based materials are particularly interesting due to their exceptional physicochemical properties. This review discusses the various techniques used to produce superhydrophobic carbon-based materials such as carbon fibers, carbon nanotubes, graphene, amorphous carbons, etc. Recent advances in emerging fields such as... -
Double-walled carbon nanotubes: synthesis, structural characterization, and application
Yoong Ahm Kim, Kap-Seung Yang, Hiroyuki Muramatsu, Takuya Hayashi, Morinobu Endo, Mauricio Terrones, Mildred S. Dresselhaus 한국탄소학회 Carbon Letters 12 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.2 4 77-88 (12 pages)
of field-effect transistors, stable field emitters, and lithium ion batteries. In addition, by utilizing the outer tube chemistry, DWCNTs can be useful for anchoring semiconducting quantum dots and also as effective multifunctional fillers in producing tough, conductive transparent polymer films. The inner tubes meanwhile preserve their excitonic transitions. This article reviews the synthesis of DWCNTs, their electronic structure, transport, and mechanical properties, and their potential uses. -
Multi-Homologous Recombination-Based Gene Manipulation in the Rice Pathogen Fusarium fujikuroi
한국식물병리학회 The Plant Pathology Journal 9 Pages
한국식물병리학회 The Plant Pathology Journal 2016, 32권 3호 1 173-181 (9 pages)
Gene disruption by homologous recombination is widely used to investigate and analyze the function of genes in Fusarium fujikuroi, a fungus that causes bakanae disease and root rot symptoms in rice. To generate gene deletion constructs, the use of conventional cloning methods, which rely on restriction enzymes and ligases, has had limited success due to a lack of unique restriction enzyme sites. Although strategies that avoid the use of restriction enzymes have been employed to overcome this... -
Improving dispersion of multi-walled carbon nanotubes and graphene using a common non-covalent modifier
Youbin Kwon, Wonbo Shim, Seung-Yeol Jeon, Ji-Ho Youk, Woong-Ryeol Yu 한국탄소학회 Carbon Letters 9 Pages
한국탄소학회 Carbon Letters 2016, Vol.20 8 53-61 (9 pages)
The reportedly synergistic effects of carbon nanotubes (CNTs) and graphene hybrids have prompted strong demand for an efficient modifier to enhance their dispersion. Here, we investigated the ability of poly(acrylonitrile) (PAN) to overcome the van der Waals interaction of multi-walled CNTs (MWCNTs) and graphene by employing a simple wrapping process involving ultrasonication and subsequent centrifugation of PAN/MWCNT/graphene solutions. The physical wrapping of MWCNTs and graphene with PAN was... -
Green synthesis of reduced graphene oxide using ball milling
G. Calder?n-Ayala, M. Cortez-Valadez, P. G. Mani-Gonzalez, R. Britto Hurtado, J. I. Contreras-Rasc?n, R. C. Carrillo-Torres 한국탄소학회 Carbon Letters 5 Pages
한국탄소학회 Carbon Letters 2017, Vol.21 12 93-97 (5 pages)
Today, finding superior methods for synthesis of graphene oxide (GO) and reduced graphene oxide (rGO) from commercial graphite, is still a challenge. The global industry requires the use of synthesis methods that are price-competitive and also use processes that are environmentally compatible. GO is a substrate used for several chemical transformations, including its reduction to related materials, such as rGO and graphene. The rGO has been used recently to increase catalytic activity in the... -
A review: synthesis and applications of graphene/chitosan nanocomposites
Hui Yuan, Long-Yue Meng, Soo-Jin Park 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2016, Vol.17 No.1 2 11-17 (7 pages)
Recently, with continuous developments in the field of materials science, graphene oxide (GO) has emerged as a promising material with excellent electrical, thermal, mechanical, and optical properties, which play important roles in most fields. Researchers have achieved considerable progress with graphene. Chitosan (CS) is a natural polymer that has been studied intensively owing to its specific formation, high chemical resistance, and excellent physical properties. These outstanding properties... -
Carbon nanotubes synthesis using diffusion and premixed flame methods: a review
Garima Mittal, Vivek Dhand, Kyong Yop Rhee, Hyeon-Ju Kim and Dong Ho Jung 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.1 1 1-10 (10 pages)
In recent years, flame synthesis has absorbed a great deal of attention as a combustion method for the production of metal oxide nanoparticles, carbon nanotubes, and other related carbon nanostructures, over the existing conventional methods. Flame synthesis is an energyefficient, scalable, cost-effective, rapid and continuous process, where flame provides the necessary chemical species for the nucleation of carbon structures (feed stock or precursor) and the energy for the production of carbon... -
Music-Centered Integrated Lesson Plan Based on IB PYP
Sung-Ji Kim, Euna Choi 한국음악교육학회 음악교육연구 20 Pages
한국음악교육학회 음악교육연구 2022, 제 51권 제 2호 1 1-20 (20 pages)
The purpose of this study is to design music-centered integrated lessons based on the International Baccalaureate Primary Years Programme (IB PYP). For this purpose, first, the characteristics of IB PYP were examined, and the scope and sequence, and learning contents on music subject of IB PYP were compared with those of Korea National Curriculum. Second, based on this analysis, the music-centered integrated lessons based on transdisciplinary themes were designed in a spiral curriculum. The... -
Nitric Oxide-Induced Autophagy in MC3T3-E1 Cells is Associated with Cytoprotection via AMPK Activation
JungYoonYang, MinYoungPark, SamYoungPark, HongIlYoo, MinSeokKim, JaeHyungKim, WonJaeKim, JiYeonJung 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2015, Vol.19 No.6 5 507-514 (8 pages)
Nitric oxide (NO) is important in the regulation of bone remodeling, whereas high concentration of NO promotes cell death of osteoblast. However, it is not clear yet whether NO-induced autophagy is implicated in cell death or survival of osteoblast. The present study is aimed to examine the role of NO-induced autophagy in the MC3T3-E1 cells and their underlying molecular mechanism. The effect of sodium nitroprusside (SNP), an NO donor, on the cytotoxicity of the MC3T3-E1 cells was determined by... -
Protective Effect of Phosphatidylcholine on Lipopolysaccharide-Induced Acute Inflammation in Multiple Organ Injury
YoonYangJung, YunsungNam, YongSeolPark, HoSungLee, SoonAuckHong, BeomKeunKim, EonSubPark, YoonHeeChung, JiHoonJeong 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2013, Vol.17 No.3 5 209-216 (8 pages)
Soybean polyunsaturated phosphatidylcholine (PC) is thought to exert anti-inflammatory activities and has potent effects in attenuating acute renal failure and liver dysfunction. The aim of this study was to investigate the effects of PC in protecting multiple organ injury (MOI) from lipopolysaccharide (LPS). Six groups of rats (N=8) were used in this study. Three groups acted as controls and received only saline, hydrocortisone (HC, 6 mg/kg, i.v.) or PC (600 mg/kg, i.p.) without LPS (15 mg/kg,... -
Profiling of Disease-Related Metabolites in Grapevine Internode Tissues Infected with Agrobacterium vitis
한국식물병리학회 The Plant Pathology Journal 11 Pages
한국식물병리학회 The Plant Pathology Journal 2016, 32권 6호 1 489-499 (11 pages)
Green shoot cuttings of 10 different grapevine species were inoculated with Agrobacterium vitis to find disease-related metabolites in the grapevine. Crown galls formed 60 days after inoculation varied in gall severity (GS) evaluated by gall incidence (GI) and gall diameter (GD), which were classified into three response types as RR (low GI and small GD), SR (high GI and small GD), and SS (high GI and large GD), corresponding to resistant, moderately resistant, and susceptible responses,... -
Systemic Infection of Maize, Sorghum, Rice, and Beet Seedlings with Fumonisin-Producing and Nonproducing Fusarium verticillioides Strains
한국식물병리학회 The Plant Pathology Journal 9 Pages
한국식물병리학회 The Plant Pathology Journal 2015, 31권 4호 2 334-342 (9 pages)
Two fumonisin-nonproducing strains of Fusarium verticillioides and their fumonisin producing progenitors were tested for aggressiveness toward maize, sorghum, rice, and beetroot seedlings grown under greenhouse conditions. None of the plants showed obvious disease symptoms after root dip inoculation. Fungal biomass was determined by species-specific real-time PCR. No significant (P = 0.05) differences in systemic colonization were detected between the wild type strains and mutants not producing... -
The Impact of Cultural Characteristics and Message Appeals on Attitudes toward Anti-Secondhand Smoke PSAs : Cross-Cultural Comparison
Hye-Jin Paek, Hyegyu Lee, Thomas Hove 한국광고PR실학회 광고PR실학연구 27 Pages
한국광고PR실학회 광고PR실학연구 2016, 제 9권 3호 10 219-245 (27 pages)
This online evaluation study of anti-secondhand smoke messages investigated two related questions. First, to what extent do different message appeals ― norm versus threat ― have differential impacts on people from a predominantly individualistic culture compared to people from a predominantly collectivistic culture? Second, how do country-level and individual-level cultural orientations interact to affect attitudinal outcomes? Using a 2 (Culture: Individualism vs. Collectivism) × 3 (Message... -
Mono-Cultural Approach in Multicultural Education: Mapping the Contours of Multicultural Early Childhood Education in New Zealand
Karen Guo 환태평양유아교육연구학회 Asia-Pacific journal of research in early childhood education 17 Pages
환태평양유아교육연구학회 Asia-Pacific journal of research in early childhood education 2014, Vol.8 No.1 2 19-35 (17 pages)
There has been an increase in research activities in multicultural early childhood education in New Zealand. This article provides a critical review of these activities. This is an attempt to unravel the aspirations and complexities associated with the educational policies and practices with children of culturally diverse backgrounds. The conclusion from this literature review is that despite the multicultural principles that support democracy and equitability in education in New Zealand, a... -
Advances in liquid crystalline nano-carbon materials: preparation of nano-carbon based lyotropic liquid crystal and their fabrication of nano-carbon fibers with liquid crystalline spinning
Yong-Mun Choi, in Jung Jun Yeon, Hwang Seung Min, Kim Hyeonsu Jeong, Bon-Cheol Ku, Munju Goh 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.4 1 223-232 (10 pages)
This review presents current progress in the preparation methods of liquid crystalline nanocarbon materials and the liquid crystalline spinning method for producing nano-carbon fibers. In particular, we focus on the fabrication of liquid crystalline carbon nanotubes by spinning from superacids, and the continuous production of macroscopic fiber from liquid crystalline graphene oxide. -
Preparation and Pore-Characteristics Control of Nano-Poros Materials using Organometallic Building Blocks
Gyn Hwan Oh, Chong Rae Park 한국탄소학회 Carbon Letters 9 Pages
한국탄소학회 Carbon Letters 2003, Vol.4 No.1 1 1-9 (9 pages)
다공성 소재는 문자 그대로 많은 양의 기공을 함유하는 소재로서, 세재의 제조시 다량으로 사용되어 온 제올라이트 및 오염물질 제거용으로 사용되어 온 다공성 탄소와 같은 예에서 보는 바와 같이 오랜 세월동안 우리 생활의 일부로 존재해 왔다. 그러나, 이들 소재에 존재하는 기공들은 그 크기나 모양에 있어 규칙성 및 균일성을 찾아보기 힘들기 때문에 기공크기는 서브나노에서 서브미크론 혹은 미크론 크기까지 통계적 분포를 보이며 기공의 모양은 프랙탈적 특징을 나타내었다. -
Phosphorylation of Akt Mediates Anti-Inflammatory Activity of 1-p-Coumaroyl β-D-Glucoside Against Lipopolysaccharide-Induced Inflammation in RAW264.7 Cells
VanAnhVo, Jae-WonLee, Ji-YoungKim, Jun-HoPark, HeeJaeLee, Sung-SooKim, Yong-SooKwon, WanjooChun 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2014, Vol.18 No.1 11 79-86 (8 pages)
Hydroxycinnamic acids have been reported to possess numerous pharmacological activities such as antioxidant, anti-inflammatory, and anti-tumor properties. However, the biological activity of 1-p- coumaroyl β-D-glucoside (CG), a glucose ester derivative of p-coumaric acid, has not been clearly examined. The objective of this study is to elucidate the anti-inflammatory action of CG in lipopo-lysaccharide (LPS)-stimulated RAW264.7 macrophage cells. In the present study, CG significantly suppressed... -
EFFECTS OF NITRIC OXIDE SYNTHASE INHIBITORS ON OSTEOCLAST-LIKE CELL FORMATION
Seung-Kyu Ahn, Jung-Kun Kim, Kyung-Suk Cha 대한치과교정학회 The Korean Journal of Orthodontics 8 Pages
대한치과교정학회 The Korean Journal of Orthodontics 1995, 제 25권 제 6호 7 715-722 (8 pages)
Orthodontic tooth movement in response to orthodontic force results from actions of osteoclasts and osteoblasts in the cell level. Convincing evidence has now been provided to support the view that osteoclasts are derived from mononuclear cells that originate in the bone marrow or other hematopoietic organs and they migrate to the bones via vascular routes. Nitric oxide(NO), which accounts for the biological properties of endothelium-derived relaxmg factor(EDRF), is the endogenous stimulator of... -
간-부분절제(肝-部分切除) 후 나타나는 재생과정(再生過程)에서 교감신경계(交感神經系)의 역할(役割)에 관(關)한 연구(硏究)
최상현(Sang-Hyun Choi), 이중근(Joong-Geun Lee), 박청산(Chung-San Park), 전보권(Boe-Gwun Chun), 천연숙(Yeon-Sook Chun) 대한약리학회 대한약리학잡지 8 Pages
대한약리학회 대한약리학잡지 1990, 제 26권 제 2호 10 177-184 (8 pages)
간-부분절제후 재생과정에서 간 polyamine 대사에 교감신경계가 촉진적으로 간여하는지를 확인하기 위하여 본 실험을 시행하였다. Guanethidine 25mg/kg를 1회 (G-1), 또는 매일 1회씩 3(G-3), 5(G-5) 및 6일간(G-6) 각각 복강내-주사하고, diethyl ether 마취하에서 웅성 백서의 간을 부분(70.4 ± 1.99%)-절제하여, 절제 전후의 혈압, 혈장 catecholamine치 및 간 polyamine 함량의 변동을 검토하여 다음의 성적을 얻었다. 1. 백서 꼬리에서 측정한 정상 수축기 혈압은 98.0 ± 3.9mmHg이며, 이는 G-1에 별 영향을 받지 않았으나, G-3,... -
Potential of Using Ginger Essential Oils-Based Nanotechnology to Control Tropical Plant Diseases
Adamu Abdullahi, Khairulmazmi Ahmad, Intan Safinar Ismail, Norhayu Asib, Osumanu Haruna Ahmed, Abubakar Ismaila Abubakar, Yasmeen Siddiqui, Mohd Razi Ismail 한국식물병리학회 The Plant Pathology Journal 21 Pages
한국식물병리학회 The Plant Pathology Journal 2020, 36권 6호 1 515-535 (21 pages)
Essential oils (EOs) have gained a renewed interest in many disciplines such as plant disease control and medicine. This review discusses the components of ginger EOs, their mode of action, and their potential nanotechnology applications in controlling tropical plant diseases. Gas chromatography-mass spectroscopy (GC-MS), high-performance liquid chromatography, and headspace procedures are commonly used to detect and profile their chemical compositions EOs in ginger. The ginger EOs are composed... -
Transcriptional Changes of Plant Defense-Related Genes in Response to Clavibacter Infection in Pepper and Tomato
In Sun Hwang, Eom-Ji Oh, Chang-Sik Oh 한국식물병리학회 The Plant Pathology Journal 9 Pages
한국식물병리학회 The Plant Pathology Journal 2020, 36권 5호 7 450-458 (9 pages)
Pepper and tomato plants infected with two Clavibacter species, C. capsici and C. michiganensis have shown different patterns of disease development depending on their virulence. Here, we investigated how pepper and tomato plants respond to infection by the high-virulent or low-virulent Clavibacter strains. For this, we chose two strains of each Clavibacter species to show different virulence level in the host plants. Although low-virulent strains showed less disease symptoms, they grew almost... -
패밀리 레스토랑 이용고객의 경험적 가치가 감정, 소비자-브랜드 관계, 그리고 브랜드 충성도에 미치는 영향
구동우 한국관광서비스학회 관광서비스연구 26 Pages
한국관광서비스학회 관광서비스연구 2015, 제 12권 제 2호 (통권 24권) 3 55-80 (26 pages)
본 연구는 고객경험 가치와 감정반응 및 소비자-브랜드 관계에 대한 이론을 기반으로 패밀리 레스토랑 이용 고객의 브랜드 충성도의 형성과정을 규명하고자 하였다. 이러한 연구목적을 달성하기 위하여 본 연구에서는 고객경험 가치를 심미성, 유희성, 고객투자 수익성, 서비스 우수성의 차원으로 나누어 이들이 감정, 만족, 몰입, 그리고 브랜드 충성도에 어떠한 직·간접적인 영향을 미치는지를 검증하였으며, 연구결과는 다음과 같다. 첫째, 심미성, 유희성, 고객투자 수익성, 그리고 서비스 우수성은 감정에 유의한 영향을 미치는... -
Identifying and quantitating defects on chemical vapor de-position grown graphene layers by selected electrochemical deposition of Au nanoparticles
Hye-Mi So, Jeong Hun Mun, Gyeong Sook Bang, Taek Yong Kim, Byung Jin Cho, Chi Won Ahn 한국탄소학회 Carbon Letters 4 Pages
한국탄소학회 Carbon Letters 2012, Vol.13 No.1 10 56-59 (4 pages)
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중국소비자의 한국화장품 구매만족에 미치는 영향 -한류선호도의 조절효과
이정세, 손상기 한국중국문화학회 중국학논총 23 Pages
한국중국문화학회 중국학논총 2015, Vol.47 2 25-47 (23 pages)
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Sources of Efficacy as Predictors of Early Childhood Pre-Service Teachers’ Self-Efficacy in Ghanaian Teacher Education Universities
Winston Kwame Abroampa, Williams Okunloye Rotimi, Joyce Nsiah Asante 환태평양유아교육연구학회 Asia-Pacific journal of research in early childhood education 18 Pages
환태평양유아교육연구학회 Asia-Pacific journal of research in early childhood education 2017, Vol.11 No.2 4 67-84 (18 pages)
The thrust of the study was to determine the extent to which sources of efficacy predicted and explained early childhood preservice teachers’ self-efficacy in Ghana. The study employed a survey design that selected 164 regular final year student teachers pursuing a Bachelor of Education degree in Early Childhood Education in two public universities in Ghana. The teacher self-efficacy scale and the sources of efficacy scale consisting of 60 items were used to gather data. Data was analysed using... -
랜덤워크 확률 모델을 이용한 깊이 영상 보간 방법
이교윤, 호요성, Lee. Gyo-Yoon, Ho. Yo-Sung 한국통신학회 한국통신학회논문지. The Journal of Korea Information and Communications Society. 통신이론 및 시스템 6 Pages
한국통신학회 한국통신학회논문지. The Journal of Korea Information and Communications Society. 통신이론 및 시스템 2011, Vol.36 738-743 (6 pages)
고해상도 3차원 깊이 영상은 고품질의 3차원 방송을 위해 필요한 중요한 정보이다. 깊이 카메라는 정확한 깊이 정보를 실시간으로 얻을 수 있지만, 카메라 물리적 한계로 인해 저해상도의 깊이 영상만 이용한다. 본 논문에서는 저해상도의 깊이 영상과 색상 영상을 이용하여 색상 영상을 보간 하는 방법을 제안한다. 제안하는 방법은 랜덤워크 확률 모델을 이용하여 각 화소들이 초기 깊이값과 같을 확률값을 정의하여 가장 높은 확률을 가지는 초기 깊이값을 나머지 화소들에 복사한다. 제안한 방법은 인접한 화소들만을 이용하는 것이... -
3차원 영상 생성을 위한 깊이맵 추정 및 중간시점 영상합성 방법
이상범, 이천, 호요성, Lee. Sang-Beom, Lee. Cheon, Ho. Yo-Sung 한국통신학회 한국통신학회논문지. The Journal of Korea Information and Communications Society. 네트워크 및 서비스 6 Pages
한국통신학회 한국통신학회논문지. The Journal of Korea Information and Communications Society. 네트워크 및 서비스 2009, Vol.34 1070-1075 (6 pages)
본 논문에서는 3차원 영상 생성을 위한 깊이맵 추정 및 중간시점 영상합성 방법을 제안한다. 제안하는 방법은 깊이맵의 시간적 상관도를 향상시키기 위해 깊이값을 추정하는 과정에서 기존의 정합 함수에 이전 프레임에서 추정한 깊이값을 고려하는 가중치 함수를 추가한다. 또한, 중간시점 영상을 합성하는 과정에서 발생하는 경계 잡음을 제거하는 방법을 제안한다. 중간시점 영상을 합성할 때, 비폐색 영역을 합성한 후 경계 잡음이 발생할 수 있는 영역을 비폐색 (disocclusion) 영역을 따라 구별한 다음, 잡음이 없는 참조 영상을... -
영상 보간을 이용한 다시점 비디오 부호화 방법
이천, 오관정, 호요성, Lee. Cheon, Oh. Kwan-Jung, Ho. Yo-Sung 한국방송공학회 방송공학회논문지 9 Pages
한국방송공학회 방송공학회논문지 2007, Vol.12 No.2 128-136 (9 pages)
사용자에게 보다 실감나는 입체감을 제공하기 위해 개발되고 있는 다시점 비디오는 두 대 이상의 카메라를 이용하여 촬영한 영상들을 기하학적으로 교정하고 공간적으로 처리하여 여러 방향의 다양한 시점 영상을 사용자에게 제공하는 3차원 영상처리 기술의 새로운 분야이다. 다시점 비디오는 사용자에게 시청 시점을 자유롭게 선택할 수 있는 기회를 주고 넓은 화면을 통한 3차원 입체감을 느낄 수 있는 장점을 가진다. 그러나 다시점 비디오는 시점 수가 증가하는 만큼 데이터 양도 증가하므로 효율적인 데이터 처리 방법이 요구된다.... -
차폐영역 정보와 그리드 메쉬 기반의 영상 워핑을 이용한 다시점 영상 생성
임종명, 엄기문, 신홍창, 이광순, 허남호, 유지상, Lim. Jong-Myeong, Um. Gi-Mun, Shin. Hong-Chang, Lee. Gwangsoon, Hur. Namho, Yoo. Jisang 한국방송공학회 방송공학회논문지 13 Pages
한국방송공학회 방송공학회논문지 2013, Vol.18 No.6 859-871 (13 pages)
본 논문에서는 스테레오 영상에서 얻은 다양한 특징들과 차폐영역에 대한 정보들을 활용하여 그리드 메쉬(grid-mesh) 기반의 영상워핑 기법을 통해 다시점 영상을 생성하는 방법을 제안한다. 제안된 기법에서는 먼저 주어진 스테레오 영상에서 영상 특징 지도(image saliency map), 직선 성분(line segments) 그리고 변이 특징 지도(disparity saliency map)를 추출하고, 추출된 특징들에 대하여 품질을 향상시키는 과정을 거친다. 이 과정은 두 가지 단계로 나뉘는데, 먼저 차폐영역에 대한 정보를 활용하여 객체의 경계 부근에서 추출된... -
OpenGL을 이용한 모델 기반 3차원 다시점 객체 구현
오원식, 김동욱, 김화성, 유지상, Oh. Won-Sik, Kim. Dong-Uk, Kim. Hwa-Sung, Yoo. Ji-Sang 한국방송공학회 방송공학회논문지 11 Pages
한국방송공학회 방송공학회논문지 2008, Vol.13 No.3 299-309 (11 pages)
본 논문에서는 OpenGL을 이용한 모델기반 3차원 다시점 영상의 객체 구현을 위한 구성과 각 모듈에 적용되는 기법을 제안한다. 한 장의 텍스쳐 이미지와 깊이 정보 영상을 가지고 다시점 객체를 생성하기 위해, 먼저 깊이 정보의 전처리 과정을 거친다. 전처리된 깊이 정보는 OpenGL 상에서의 일정 간격의 꼭지점 정보로 샘플링 되며, 깊이 정보를 z값으로 가지는 3차원 공간 좌표상의 점이다. 이 꼭지점 정보를 기반으로 텍스쳐 맵핑을 위한 다각형을 구성하기 위해 딜루이니 삼각화(Delaunay triangulations) 기법을 적용한다. 이렇게... -
마우스 선조체에서 Opioid 수용체 결합에 대한 Neuroleptics의 영향
김수경(Soo-Kyung Kim), 이성룡(Seong-Ryong Lee), 박창교(Chang-Gyo Park) 대한약리학회 대한약리학잡지 8 Pages
대한약리학회 대한약리학잡지 1994, 제 30권 제 3호 3 291-298 (8 pages)
이 연구에서는 선조체에서 opioid 신경계와 dopamine 신경계의 상호 관계를 알아보기 위해서 morphine을 5m/kg, 20 mg/kg로 10일간 복강내 투여한 후 chlorpromazine, thioridazine, haloperidol, sulpiride, pimozide를 투여하였다. Opioid μ, δ, κ 수용체의 binding의 변화를 관찰하고자 [3H] DAGO, [3H] DPDPE, 및 [3H] DPN binding assay를 하였으며, 그 결과 morphine (20 mg/kg) 장기 투여된 실험군에서 [3H] DAGO, [3H] DPDPE, 및 [3H] DPN 결합이 감소되었다. Morphine 20 mg/kg 장기 투여군에 chlorpromazine, thioridazine...
