상용차 기반에 대한 주차보조시스템 사용자 감성 평가

전재석(Jaeseok Jeon),박현배(Hyunbae Park),문희석(Heeseok Moon),곽수진(Sujin Kwag) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5

In this paper, we described about evaluation of human sensibility using park assist system of the commercial vehicle. The perpendicular parking and parallel parking have been carried out as a user test and subjects are classified as beginning drivers, drivers with less than 1 year experience and over 3 years experience. As a result, parking duration of beginning drivers and drivers with less than 1 year experience who use automatic parking assistance system is similar to drivers with over 3 years experience. However error occurred according to sensor position and distance between vehicle and parking space. And also it occurred that the vehicle leaves from parking line or does not recognize the parking space. Therefore, if we improve its completeness by compensating problems that came up from this evaluation and distribute the automatic parking assistance system, it is expected that the park assistance system is to help driver providing convenience of parking.

A Risk Management For Prevention of Birds Strike In Urban Parks Close to the Airport

Mu-Geun Kim,Dam-Yong Park,Joon-Jo Moon,Hyunsu Kim 한국조류학회II 2016 한국조류학회지 Vol.23 No.2

The Western Seoul Lake Park which lies in Yangcheon Sinwol-dong of Seoul was opened in October 2009. The number and species of birds are expected to continue to increase in the future around the airspace over the Western Seoul Lake Park. The Western Seoul Lake Park is, however, geographically close to the southern end of the Gimpo Airport, and it is located on the approach surface of the obstacle limitation surfaces thereof. For that reason, the probability of bird strikes around the airspace over the Western Seoul Lake Park would be significantly high in comparison with that of bird strikes around the airspace over the other parks near the Gimpo Airport. To assessment of bird strike risk in the Western Seoul Lake Park, we visited four times between 2015 and 2016. And ducks and geese were identified as the most dangerous species. In this paper, we will, through the analysis of the Western Seoul Lake Park case, propose a new approach to bird strike risk management around that Park and also present the improvements of current relevant policies.

Pollen metabarcoding reveals the floral resources and niche overlap of honeybees in forest areas

Do Yuno,Park Woong‐Bae,Park Jun‐Kyu,Kim Chang‐Jun,Kim Il‐Kwon,Choi Moon Bo 한국곤충학회 2022 Entomological Research Vol.52 No.12

We investigated the floral resources of the honeybee (Apis mellifera)bypollenDNA metabarcoding as the first step in honeybee conservation. We attempted to identify as many floral resources and as wide resource availability as possible in areas and compared the richness of floral resources between forests and national parks. We found that both forest and national parks can sufficiently support honeybee floral resources; however, national parks were more stable habitats with more complex vegetation structure than those of forests. Also, honeybee’s preferences for floral resources were determined using niche breadth, niche overlap, and network analysis among the floral resources in forest areas. Quercus and Actinidia were the most frequently detected taxa of pollen resources in both forests and national parks by pollen metabarcoding. Even though we anticipated that more various pollen resource taxa would be found in national parks than forests, no differences in the number pollen resource taxa were detected between them. According to the niche overlap analysis result, the honeybee preferred the pollen resources in both forests and national parks, and the co-occurrence pattern analysis of pollen resource taxa in both forests and national parks showed a simple network. Altogether, our findings suggested that DNA metabarcoding of pollen collected by the honeybee can provide useful information on the flowering plants in a given area. As the use of floral pollen resources varies spatially and temporally, periodic monitoring of pollen resources can identify which pollen is required to maintain the health of honeybee colonies.

高層아파트 團地의 形狀要素에 관한 硏究(Ⅰ) : 小規模 高層아파트 團地의 駐車空間을 中心으로 Centering on the parking place in small-scale high-rise apartment building complex

朴文瑀,姜大奎,趙容準 조선대학교 동력자원연구소 1991 動力資源硏究所誌 Vol.13 No.1

All dwelling complex should be plan with the consideration on the cars. this is because the car is no only a necessary tool for the man's various wants, but also a checking cause for the dwelling complex's comforts. this study focuses on the apartment complex of the dwelling scale taking a large percentage in Kwangju, and the various matters and the remedy about the parking space. the results are following. 1. The parking space is affected by the dwelling bwelling's arrangement, the open space and the incidental facilities. therefore the apartment complex plan of the future must apply the view of mass space. 2. Recently, the environs of the dwelling building are used as a parking space. It affects a bad effect on the complex's comfort. So the laws enacted to establish the underground parking place are required. 3. For the great comforts and closeness, the complex's plan has to consider the closeness of the complex entrance, the dwelling building entrance and the parking space.

바이모달 트램의 후진주차보조 알고리즘 개발에 관한 연구

최성훈(Seonghoon Choi),박태원(Taewon Park),이수호(Sooho Lee),문경호(Kyeongho Moon) 한국자동차공학회 2009 한국 자동차공학회논문집 Vol.17 No.5

The bi-modal tram is under development as a new public transportation. The features of the tram are an extended wheel base and its length. This features result in difficulties for drivers on maneuvering the tram. Therefore, the all wheel steering system is applied to the articulated vehicle. The AWS system enables the vehicle to steer all the rear wheels independently and improves its driving characteristics. However, the bi-modal tram has a problem to move backward in the limited place because of its geometric feature and the AWS system. Hence, the reverse parking assistant algorithm for articulated vehicle is developed to solve the problems of the reverse parking. Using the vehicle model which includes the reverse parking assistant algorithm, the dynamic analysis is performed for several parking cases. By the result of the analysis, the stability and validity of the reverse parking assistant algorithm is verified.

바이모달 트램의 위치 인식 방법 및 정밀 정차 구현

서기원(Seo Ki-Won),박주연(Park Ju-Yeon),이상남(Lee Sang-Nam),류희문(Ryu Hee-Moon),변윤섭(Byun Yeun-Sub) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.5월

This paper presents a method for precisely localizing and parking of bimodal trams. In order to gain an automatically driving system for bimodal trams, precise up-to-date localization, velocity recognition, distance to next station and precise parking location estimation functions are required. This paper proposes a system consisting of control device, steering device, sensor input equipment, driving system, tachometer, vehicle-side sensors, magnetic markers and magnetic sensors. The tram recognizes the precise location via magnetic markers containing information. Parking position and precise distance calculation is embodied by a tachometer. The vehicle-side sensors are used to assure safe station approaching and parking magnetic markers provide improvement of precision while tram parking. This paper provides a system realizing localization and precise parking and afterwards the automatic drive test results are reported and analyzed.

만성 신부전을 동반한 Laurence Moon-Bardet Biedl 증후군 1례

박래경,이동환,문철,김은미,Park Lae Kyong,Lee Dong Hwan,Moon Chul,Kim Eun Mi 대한소아신장학회 1998 Childhood kidney diseases Vol.2 No.2

The Laurence Moon-Bardet Biedl syndrome is characterized by obesity, mental retardation, visual impairment with retinitis pigmentosa, polydactyly, hypogonadism and renal manifestations. We experienced an 11 years old female with Laurence Moon-Baret Biedl syndrome associated chronic renal failure. She was diagnosed to have LMB syndrom according to the clinical manifestations of polydactyly on hands and feet, mental retardation, obesity, retinitis pigmentosa and chronic renal failure. She is on maintenance hemodialysis now.

Taxonomic study of genus Ypsolopha (Lepidoptera: Ypsolophidae) from Korea

Sol-Moon Na,Bo-sun Park,Dong-June Lee,Yang-Seop Bae 한국응용곤충학회 2015 한국응용곤충학회 학술대회논문집 Vol.2015 No.04

The genus Ypsolopha Latreille 1796, belongs to the family Ypsolophidae, small to medium sized micro-moth, with more than 140 described species around the world. More than 70% of the species are described from the Palearctic and Oriental Regions (Jin et al., 2013). Major taxonomic study of Ypsolopha carried out by following scholars. In the end of 18th to early of 20th century, Fabricius (1798), Hübner (1826), Agassiz (1846), Walshingham (1881, 1889), Busck(1903, 1906) and Meyrick (1914-1937). Furthermore, Moriuti (1964, 1977) studied total 17 Japanese Ypsolopha species and he divided 3 groups which based on fore- and hind- wing venations and shape of labial palpus. The first systematic study of the genus Ypsolopha carried out by K. T. Park (1983), discovered with four species, Ypsolopha blandella (Christoph), Y. yasudai Moriuti, Y. strigosa (Butler), Y. acuminata (Butler) in ‘Illustrated Flora & Fauna of Korea vol. 27 Insecta (Ⅸ)’ and ‘Check List of Insects from Korea’. After than, Ypsolopha longa Moriuti was discovered by Jeong et al.(1995). In 2001, Byun and Park, they described new species, Ypsolopha nigrimaculata Byun and Park. At the same time, Byun and Bae reported 3 newly recorded species; Y. cristata Moriuti, Y. japonica Moriuti, Y. parenthesella (Linnaeus). Up to date, 14 species have been recorded from Korea by Sohn (2010, 2011) with Y. amoenella (Christoph), Y. asperella (Linnaeus), Y. contractella (Caradja) and Y. acerella (Ponomarenko and Sohn). In the present study, we identified 14 species belonging to the genus, with some unidentified species. The materials examined come from the collection of Incheon National University.

도시공원 내 인공습지 도입을 위한 소생태계 사계 연구

鄭龍文,朴眞英 공주대학교산업개발연구소 2000 産業開發硏究 Vol.8 No.-

This study is presented the improvement techniques of artificial wetland, one of micro-ecosystem developed to promote bio-diversity in urban areas, through studies of problem in cases. To this end, based on instances found in broad and importance which is development method of ecological park, wetland and micro-ecosystem at cases was proved the effect of techniques. There was no monitoring result and biological lacking about biological form in urban areas in korea. But this study selected the subject which it built up until the present time and it was presumes development possibility site. So this study showed techniques to promote bio-diversity. Key result of this study are as follows. (1) There is the problem of the living environment for creatures. The artificial embankment is necessary to various water depths and considering of the living of aquatic life. It is an important factor for the ability of activity place and prevention of soil erosion for activities of aquatic insects and young fish as well as the growth of aquatic plants. Therefore, as create of the embankment must considering that form of embankment, various grade, soil stability, food-plant and as well as the plant by water to clean . (2) It is necessary for making observation way to protection. Recently, this problem must consider because of ecological park stand out in bold relief. As a result, the ecological park must accept many people to use. Therefore, nature get damaged. Until now, cases are developed deck and way for observation too accessible. So a soil environment has been change for the worse and caused soil compaction. It was menaced the living environment for creature. Therefore, suitable pattern of observation way and areas for protection through the control should be consider to protect of living environment for creatures. (3) Cases presented is lack model of living environment for creature. In such a case of a forward nation, there is studying about ecological model to promote bio-diversity even detailed part. To example, stone-constructed, to placement a log, to built of a grass-roofed house(a small cottage), it is induce a micro-living thing by create porous environment. Therefore, we must continually study for allurement a living thing at the place-constructed in urban areas. (4) Environment education program's development are more earnest are urgent. It is most important works. Therefore, study have to going afterward. The present state of artificial wetland and eco-pond were not development of program. So it is raise the problem. Environment education by placement of guide map or book and a volunteer in the field is a practice way of a narrow means. Also development program is urgent to aware important of environment and development program and training for environmental specialist have to preceding. As a result of development method groping should be sponsored education of special and efficacious.

Insulation Coating of Fe–Si–Cr Soft Magnetic Powder by Selective Oxidation

Jae‑Young Park,Kwangsuk Park,Bosung Seo,Julien O. Fadonougbo,Tae‑Wook Na,Ki Beom Park,Hyeon‑Tae Im,Nong‑Moon Hwang,Hyung‑Ki Park 대한금속·재료학회 2022 METALS AND MATERIALS International Vol.28 No.7

This study examines the insulation coating technology of Fe–Si–Cr powder via selective oxidation annealing, which oxidizeselements selectively by controlling the oxidation potential. The study calculated the oxidation driving force of Fe, Si, andCr, and conducted a thermodynamic analysis of oxidation and reduction conditions according to temperature and oxidationpotential. Based on the results, a selective oxidation annealing was performed in an atmosphere in which Fe is reduced andonly Si and Cr are selectively oxidized. The oxidation potential was controlled through the partial pressure ratio of hydrogenand water vapor. The XPS analysis results confirmed that a Si and Cr complex oxide layer formed on the powder surfaceafter the selective oxidation annealing. Afterward, withstanding voltages were analyzed to evaluate the insulation property. Then, the withstanding voltage of the powder applying the selective oxidation annealing increased significantly comparedto that of the initial powder. Further analysis showed that the powder annealed in an air atmosphere had a significantly lowersaturation magnetic flux density than the initial powder, while the powder applying the selective oxidation annealing hadonly a slightly reduced saturation magnetic flux density.