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WIBRO 시스템의 Radio over Fiber에 의한 Access Point 접속구도
송주빈, 김영일, Song. Ju-Bin, Kim. Young-Il 한국항행학회 한국항행학회논문지 10 Pages
한국항행학회 한국항행학회논문지 2005, Vol.9 No.2 93-102 (10 pages)
본 논문은 휴대인터넷시스템의 수동피코셀 제안과 엑세스포인트와 수동형 피코셀간의 ROF(Radio over Fiber)접속 구도에 대한 것이다. 휴대인터넷시스템(Wibro)은 시속 60km의 중속도의 이동 단말에 50Mbps의 IP 기반 데이터서비스를 제공하는 것이다. 따라서 서비스를 제공하기 위하여 초기에 셀의 구축비용을 최소화 하는 것이 요구된다. 본 논문은 이러한 요구사항을 만족하는 수동형 피코셀을 제안하고 이의 접속구도에 대하여 제안한 것이다. 기존의 FP(Fabry-Perot) 레이저를 채용하는 경우 ROF 링크의 비선형 특성을 측정하여... -
Conducting and interface characterization of carbonate-type organic electrolytes containing EMImBF4 as an additive against activated carbon electrode
Mingyeong Kim, Kyungmin Kim and Seok Kim 한국탄소학회 Carbon Letters 6 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.1 8 51-56 (6 pages)
Carbonate-type organic electrolytes were prepared using propylene carbonate (PC) and dimethyl carbonate (DMC) as a solvent, quaternary ammonium salts, and by adding different contents of 1-ethyl-3-methyl imidazolium tetrafluoroborate (EMImBF4). Cyclic voltammetry and linear sweep voltammetry were performed to analyze conducting behaviors. The surface characterizations were analyzed by scanning electron microscopy method and X-ray photoelectron spectroscopy. From the experimental results,... -
연구목적 본연구의목적은인지학관점에서죽음교육의필요성을논하는데있다.주제의연 구를 통해 인지학과 죽음학의 접점을 찾고, 그것을 교육적 측면에서 어떻게 인식하고 다루어야 하 는지를 탐구하기 위해서이다. 인간 존엄을 통해 세상을 이해할 수 있는 필요한 덕목을 찾아 교육적 관점에서 구조화를 진행하는 것이 필요하다고 보기 때문이다. 연구 내용 본 연구에서는 인간의 지혜를 탐구하는 인지학을 통해 죽음에 대한 인식과 교육방법 을 탐구하고자 한다. 직관을 함양하고 초감각적 세계의 통찰을 통해 진정한 자아를 발달시키고 육...
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Media Landscape without Apple: A Workshop for Critical Awareness of Alternative Media Infrastructure
Mizukoshi Shin 경인교육대학교 교육연구원 The Journal of Education 18 Pages
경인교육대학교 교육연구원 The Journal of Education 2020, Vol.3 No.2 5 77-94 (18 pages)
Until the 2000s, media literacy evolved while centering around the application of critical thinking of contents such as TV programs and the exchanges on social media. However, unlike television, messages on social media are inseparable from the infrastructure that supports them, as the nature of the infrastructure frames the contents and the communication phenomenon. When Google, Apple, Facebook, and Amazon are so visible in our daily lives, we believe it is necessary to examine and promote... -
“In the Shoes of an Algorithm”: A Media Education Game to Address Issues Related to Recommendation Algorithms
Jerry Jacques, J?r?my Grosman, Anne-Sophie Collard, Yeonju Oh, Amie Kim, Hyeon-Seon Jeong 경인교육대학교 교육연구원 The Journal of Education 26 Pages
경인교육대학교 교육연구원 The Journal of Education 2020, Vol.3 No.1 4 37-62 (26 pages)
Recommendation algorithms play an important role in the current media landscape by fostering interactions between users of digital media platforms and media content. The growing concern with recommendation algorithms raises important questions for media educators who emphasize critical analysis of media content and creative production and are required to develop media education initiatives focused on a critical understanding of digital platforms and their underlying technical infrastructures.... -
Non-invasive quantification of hepatic fat content in healthy dogs by using proton magnetic resonance spectroscopy and dual gradient echo magnetic resonance imaging
Francesca Del Chicca, Andrea Schwarz, Dieter Meier, Paula Grest, Annette Liesegang, Patrick R. Kircher 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2018, 제 19권 제 4호 14 570-576 (7 pages)
The objective of the present study was to describe two non-invasive methods for fat quantification in normal canine liver by using magnetic resonance imaging (MRI) and spectroscopy. Eleven adult beagle dogs were anesthetized and underwent magnetic resonance examination of the cranial abdomen by performing morphologic, modified Dixon (mDixon) dual gradient echo sequence, and proton magnetic resonance spectroscopy (1H MRS) imaging. In addition, ultrasonographic liver examination was performed,... -
Porcine intestinal lymphoid tissues synthesize estradiol
Chan Jin Park, Heehyen Kim, Jooyoung Jin, Radwa Barakat, Po-Ching Lin, Jeong Moon Choi, CheMyong Jay Ko 대한수의학회 Journal of Veterinary Science 6 Pages
대한수의학회 Journal of Veterinary Science 2018, 제 19권 제 4호 1 477-482 (6 pages)
Estradiol (17-estradiol) is synthesized primarily in the gonads of both sexes and regulates the development and function of reproductive organs. Recently, we reported that intestinal lymphocyte homeostasis is regulated by estradiol synthesized de novo in the endothelial cells of the high endothelial venules (HEVs) of mesenteric lymph nodes and Peyer’s patches in mice. This observation prompted us to hypothesize that HEVs of intestinal lymphoid tissues are sites of estradiol synthesis... -
Accuracy of sonographic diagnosis of pneumoperitoneum using the enhanced peritoneal stripe sign in beagle dogs
Song Yeon Kim, Ki Tae Park, Seong Chan Yeon, Hee Chun Lee* 대한수의학회 Journal of Veterinary Science 4 Pages
대한수의학회 Journal of Veterinary Science 2014, 제 15권 제 2호 4 195-198 (4 pages)
The objective of this study was to evaluate the feasibility and accuracy of estimating the smallest amount of abdominal free gas detectible in a large population of beagles by ultrasonography. Healthy dogs were randomly divided into three groups: group A that received 0.1 mL of air injected into the peritoneal cavity, group B that received 0.2 mL of air injected into the peritoneal cavity, and group C that received 0.5 mL of intraperitoneal air. Randomly, some dogs in each group did not receive... -
Evaluation of a canine small intestinal submucosal xenograft and polypropylene mesh as bioscaffolds in an abdominal full-thickness resection model of growing rats
A-Jin Lee, Sung-Ho Lee, Wook-Hun Chung, Dae-Hyun Kim, Dai-Jung Chung, Sun Hee Do, Hwi-Yool Kim* 대한수의학회 Journal of Veterinary Science 10 Pages
대한수의학회 Journal of Veterinary Science 2013, 제 14권 제 2호 9 175-184 (10 pages)
We evaluated the biological scaffold properties of canine small intestinal submucosa (SIS) compared to a those of polypropylene mesh in growing rats with full-thickness abdominal defects. SIS is used to repair musculoskeletal tissue while promoting cell migration and supporting tissue regeneration. Polypropylene mesh is a non-resorbable synthetic material that can endure mechanical tension. Canine SIS was obtained from donor German shepherds, and its porous collagen fiber structure was... -
Evaluation of buccolingual molar inclinations among different vertical facial types
Feyza Eraydin, Derya Germec Cakan, Murat Tozlu, Fulya Ozdemir 대한치과교정학회 The Korean Journal of Orthodontics 6 Pages
대한치과교정학회 The Korean Journal of Orthodontics 2018, 제 48권 제 5호 7 333-338 (6 pages)
Objective: The aim of this study was to compare the buccolingual inclination of maxillary and mandibular molars in adults with different vertical facial types. Methods: Cone-beam computed tomography images of 135 adult patients (age, 20–45 years) with skeletal Class I maxillomandibular relationships were assigned to normodivergent (n = 46), hypodivergent (n = 49), and hyperdivergent groups (n = 40) according to linear and angular sella-nasion/gonion-menton measurements. The normodivergent...
