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Localization Algorithm without Range Information in Wireless Sensor Networks
이병화,엄두섭,Lee, Byoung-Hwa,Lee, Woo-Yong,Eom, Doo-Seop 한국전기전자학회 2007 전기전자학회논문지 Vol.11 No.4
A sensor network is composed of a large number of sensor nodes that are densely deployed in a field. Each sensor performs a sensing task for detection specific events. After detecting this event, location information of the sensor node is very important. Range-based scheme of the proposed approaches typically achieve high accuracy on either node-to-node distances or angles, but this scheme have a drawback because all sensor nodes have the special hardware. On the other hand, range-free scheme provides economic advantage because of no needed hardware even if that leads to coarse positioning accuracy. In this paper, we propose a range-free localization algorithm without range information in wireless sensor networks. This is a range-free approach and uses a small number of anchor nodes and known sensor nodes. This paper develops a localization mechanism using the geometry conjecture (perpendicular bisector of a chord). The conjecture states that a perpendicular bisector of a chord passes through the center of the circle.
이병화,김성우,오우섭,구연덕,Lee, Byoung-Hwa,Kim, Sung-Woo,Oh, Woo Seop,Koo, Yeon-Deog 한국군사과학기술학회 2013 한국군사과학기술학회지 Vol.16 No.2
Visual information and aural warning of independent aircraft survivability equipment increase the pilot workload and limit the effective countermeasures. For increase the aircraft survivability, Integrated design of survivability display and aural warning need to consider pilot intuitions. If pilot aware the threat by intuition, evade or escape from the threat using the countermeasures equipment, it will increase the survivability. This paper describe the design and verification of for Utility Helicopter survivability equipment.
현대(現代)패션에 나타난 Animality의 조형성(造形性)에 관(關)한 연구(硏究)
이병화 ( Byoung Hwa Lee ),허갑섬 ( Kap Sum Huh ) 한국패션비즈니스학회 2000 패션 비즈니스 Vol.4 No.1
The purpose of this study is firstly to have the grasp of the tendency of animality represented in modern fashion. The second purpose is to analyze the form modeling of animality represented in modern fashion and the third one is to examine into an aesthetic character of animality represented in modem fashion. The method we adopt for this study is to analyze the designers` work which shows the fashion animality. The result of this study is follows. The tendency of animality represented in modern fashion presented in a printed form which patterned the animals` cuticle, a shape of animals, a symbolic image, and a future suggestive expression. The form modeling of animality is a reality and the aesthetic character is the vigorous beauty and the gorgeousness of original colors. So, animality represented in modern fashion is to offer the various ideas as well as to lead the curiosity about the fashion in the future and the coexistence into the fashion.
인터넷 쇼핑몰 환경에서 맞춤 한복상품 구매시스템 모형개발
이병화(Lee Byoung-Hwa) 한복문화학회 2011 韓服文化 Vol.14 No.3
The purpose of this study is a maximization of profits of purchaser and enterprise by developing the order made hanbck purchase system. In this study, 6 model compacted requests of purchaser have been offered by adding options on the basic model process of on-line purchase. As a result, model Ⅳ, Ⅴ, connected between virtual image present and pattern-CAD system, have been a high level of system required avatar, video animation and customers body image scan systems, though model Ⅰ, Ⅱ, Ⅲ have been easy way to realization by adding options. In conclusion, developed models present profits to both purchasers and salespersons. In other words, the purchaser can participate designing a hanbok expected to purchase in online and take the order made hanbok. On the other, the salesperson can utilize a purchasers data accumulated in DB and be relieved of a over-stocking by merchandising order production. Also, the order made hanbok will expand in on-line market based on models led to satisfactory purchase by compacting purchaser's request.
O2/N2 와 O2/CO2 분위기에서 석탄의 연소 및 질소산화물의 특성에 관한 연구
이병화(Byoung-hwa Lee),김성곤(Seong-gon Kim),이천성(Cheon-sung Lee),송주헌(Ju-hun Song),장영준(Young-june Chang),전충환(Chung-hwan Jeon) 한국연소학회 2010 KOSCOSYMPOSIUM논문집 Vol.- No.40
The characteristics of combustion and emissions from pulverized coals with O2/N2 and O2/CO2 environment at different O2 concentration (12, 21, 31%) were investigated in an drop tube furnace. Results showed that the char burning rate was faster as O2 concentration was higher and char burning rate with O2/CO2 was decreased those of O2/N2 due to the lower rate of oxygen diffusion into coal surface through the CO2 rich boundary layer. NO concentration increased with increasing O2 concentration, but declined at 31% O2 concentration. On the other hands, NO indexes decreased monotonically with increasing O2 concentration. This facts indicated that the reduction of NO was increased in higher O2 concentration due to formation of HCN. The NO concentration with O2/CO2 was lower than those of O2/N2 entirely due to enhancement of the NO reduction reaction with carbon monoxide. Almost no effect of temperature on NO emission at 1300℃.
이병화(Lee Byoung-Hwa) 한복문화학회 2017 韓服文化 Vol.20 No.1
The purpose of this study is to utilize and propagate the korean cultural heritage and to make jobs by developing DIY product. This study is limited to five items, which are a gangbo, a baenaet-jeogori, a dureongei, a tuckbaage and a sonssagea. Materials, which are white cottons; a gwangmock, an asa-myon, an ockyangmock or white cotton flannels, is basically used. To develope the product, it is cut out and divided to two sets by its size, which is the real size of a newborn baby or half size of it, broadening a customer"s choice. And it has been already cut out by its size and items to reduce its making time and record its making process. Therefore the pattern is not provided because of this simple process, which consist of only two steps, needlework(sewing) and ironing. In conclusion, the DIY package, traditional birth-clothes and developed as a prototype, was suggested as a practical marketing program and korean tradition culture will be rapidly spread and succeeded as a level of cultural heritage.
온라인 오픈마켓에 노출된 한(韓)스타일 한복상품 조사를 통한 마케팅 방향제시
이병화(Byoung-hwa Lee) 아시아민족조형학회 2011 아시아민족조형학보 Vol.9 No.1
The purpose of this research was to propose the direction of Hanbok-marketing and the focus through the trend of Han-styled Hanbok in on-line market. Research Methods was investigated Open-market, G-market, Auction, 11th-street and the investigation period has been from the April, 1st to the April, 10th, 2011. The results were as follows; 1. Han-styled Hanbok products have been available for customers with 175 webpages and 9,551 merchandises. 2. The Image classification result have had 5 sorts of images, that is, traditional hanbok, improvement hanbok, life hanbok, Fusion-hanbok, uniform. 3. The professionalism of business has been required by detailed items of Han-styled hanbok following T.P.O. Conclusion and Marketing focus; First, the marketing strategy available with the detailed classification of Han-styled hanbok product has been suitable for business own product images. Second, Find directions in the product competitiveness or the service marketing for the competitive edge have been necessary for multiple competition. Third, the brand-marketing informed of own brands or images has been available. Forth, as a sort of fashions, the Han-styled product"s era has arrived with available various marketings in fashion business.
이병화(Byoung-hwa Lee),김이령(I-ryung Kim) 아시아민족조형학회 2011 아시아민족조형학보 Vol.10 No.1
A purpose of this study is to present a method of expressing designed hanboks by fashion illustration, analyzing a dang-eui and applying principles and elements of design. A method of researching this study has been to illustrate designed hanbok by applying elements of the wearing dang-eui and skirt, analyzing principles and elements of these design. As a result, the designed hanbok can be expressed definitely and systematically through principles and elements of the design. Specially, this study has presented a fashion-illustration that a spirit of tradition is expressed naturally in hanbok, so help the Korean who enjoy dressing in hanbok realize succession of traditional costume properly. In conclusion, achievement of this study expect to help make global design idea motive through analyzing and dividing an korean costume, and dressing in designed hanbok comfortably and stylishly help modern people make an opportunity easily experiencing our tradition.