• Title/Summary/Keyword: Covering area

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A Study on Distribution of Vegetation and Assessment of Green Naturality in Byeonsanbando National Park (변산반도국립공원의 식생분포 및 녹지자연도 사정에 관한 연구)

  • Oh, Koo-Kyoon;Kim, Sun-Young
    • Korean Journal of Environment and Ecology
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    • v.23 no.2
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    • pp.161-168
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    • 2009
  • This research aims at having a grip on the actual condition of vegetation distribution Byeonsanbando National Park and to propose a survey and drawing criteria for vegetation map. Thus, this research conducted a survey of the vegetation distribution on Byeonsanbando National Park through review of the literatures on vegetation surveys on the National Parks in the past and at the present and preparing criteria for survey and drawing of vegetation. The actual vegetation of Bye on san ban do National Park was classified into eight plant communities and other land; the Substitution forest, or natural forest was classified into four plant communities including Quercus variabilis community, deciduous forest, Pinus densiflora community, and mixed forest while afforested land was classified into four forest types: P. rigida forest, P. thunbergii forest, P. rigida forest, P. rigitaeda forest, P. rigida - thunbergii forest, etc. The area belonging to grade 7 in Nature Degree was found to be the largest, covering 69.1% in Byeonsanbando National Park while the area belonging to grade 9 was very rare, covering 0.36%. Thus, it is suggested that criteria for survey and drawing map needed for the systematic survey and management of vegetation in National Parks.

The Effect of the Ground Composition on Thermal Environment in Multi -residential Building Block (공동주택 단지 내 지반 특성 및 지반 구성에 따른 열적 특성에 관한 연구)

  • Hwang, Hyo-Keun;Song, Doo-Sam
    • Journal of the Korean Solar Energy Society
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    • v.29 no.5
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    • pp.88-97
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    • 2009
  • In these days, it attracts our attention to create a green outdoor environment around the building block in urban area. Green space and permeable ground covering are increased by laws and regulations. According to these trends, variety researches for improving outdoor environment are accomplished at this moment. However, the problems for outdoor environment such as heat island effect and air contaminant in urban area are still reported. The purpose of this study is to examine the variables to affect the formation of outdoor thermal environment by quantitative analysis. As a initial study, in this paper, the effect of ground composition on changes of surface temperature and heat flux in multi-residential building were analyzed by field measurement and numerical simulation. Through field measurement, the surface temperature and heat flux of artificial ground in multi-residential building in Suwon city were measured. The result showed that the surface temperature was decreased by about $20^{\circ}C$ with afforestation of artificial ground compared with those of concrete covering. Moreover, the inner temperature of artificial ground was changed as same behaviors of outdoor temperature changes to depths of 20cm. In simulation, the effect of soil types and depth of artificial ground on the changes of the surface temperature and heat flux were analyzed. As results, the natural soil ground was more effective against lowering the surface temperature than any other cases in the analyzed cases.

Temple and Postauricular Dissection in Face and Neck Lift Surgery

  • Lee, Joo Heon;Oh, Tae Suk;Park, Sung Wan;Kim, Jae Hoon;Tansatit, Tanvaa
    • Archives of Plastic Surgery
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    • v.44 no.4
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    • pp.261-265
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    • 2017
  • Periauricular paresthesia may afflict patients for a significant amount of time after facelift surgery. When performing face and neck lift surgery, temple and posterior auricular flap dissection is undertaken directly over the auriculotemporal, great auricular, and lesser occipital nerve territory, leading to potential damage to the nerve. The auriculotemporal nerve remains under the thin outer superficial fascia just below the subfollicular level in the prehelical area. To prevent damage to the auriculotemporal nerve and to protect the temporal hair follicle, the dissection plane should be kept just above the thin fascia covering the auriculotemporal nerve. Around the McKinney point, the adipose tissue covering the deep fascia is apt to be elevated from the deep fascia due to its denser fascial relationship with the skin, which leaves the great auricular nerve open to exposure. In order to prevent damage to the posterior branches of the great auricular nerve, the skin flap at the posterior auricular sulcus should be elevated above the auricularis posterior muscle. Fixating the superficial muscular aponeurotic system flap deeper and higher to the tympano-parotid fascia is recommended in order to avoid compromising the lobular branch of the great auricular nerve. The lesser occipital nerve (C2, C3) travels superficially at a proximal and variable level that makes it vulnerable to compromise in the mastoid dissection. Leaving the adipose tissue at the level of the deep fascia puts the branches of the great auricular nerve and lesser occipital nerve at less risk, and has been confirmed not to compromise either tissue perfusion or hair follicles.

A Study on the Beauty of the Islamic Folk Costume, Affected by Islamism -Focusing on the Islam Culture Area in Southwest Asia- (이슬람교 영향을 받은 이슬람 민속복식 미의 연구 -서남아시아의 이슬람 문화권을 중심으로-)

  • Seo, Bong-ha;Kim, Min-Ja
    • Journal of the Korean Society of Clothing and Textiles
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    • v.32 no.5
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    • pp.808-820
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    • 2008
  • The costume of Islam cultural area has been affected by the strict social structure, formed by religion, and traditional costume of Islam has been maintained up to these days under the influence of religion. Islam Traditional Costume, which is the succession of the traditional costume of southwest Asia region, became armed with the form of closed costume due to the chastity and oppression. There are figurative features of Islam Folk Costume; first, the dimensional form due to the ampleness, covering the body, second, the reinforcement of closed form such as chador and burqa, third, the symbolism such as the adornment or incantational ornament, which has been inherited from the former times of Islam era, fourth, the color, simplified with black and white. The aesthetic values of Islam folk costume are represented with 'The beauty of abstinency', suppressing the ornamentation and color, caused by the strict social atmosphere under the influence of the form of traditional costume and religion, 'The beauty of concealment' due to the closeness, with affluent costume forms, covering the body and even concealing the face, and 'The beauty of symbol' which is demonstrated with incantational ornamentation of face and interior decoration. In some nations amongst Islam nations, the wearing of hijab is strictly regulated but black chador and burqa are regarded as negative symbols, representing the closeness and oppression of Islam. It is the product of Orientalism from the western perspective. The Islam Hijab culture is the symbol of oppression towards women, but, on the other hand, it is the device to protect women and the traditional culture, symbolizing the identity.

A Study on the Present Status and Improving Measure of Sea Charts (해도의 사용실태 조사와 개선방안에 관한 연구)

  • 나송진;정재용;박진수
    • Journal of the Korean Institute of Navigation
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    • v.24 no.1
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    • pp.1-12
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    • 2000
  • The ships over the certain navigation area or her length are required to carry charts under the relevant laws. Charts are indispensible to the ships and fishing vessel, because their crew should know the water depth and location of obstacle in order to avoid danger in the navigation and fishing area. But it was found that many ships do not carry proper charts onboard according to the research marine accidents files of marine accident inquiry agency, and questionnaire survey. Consequently, many ships run aground on the coast and port. This study examined the present status of the coastal ship and the fishing vessels, and explained some problems in the aspect of the covering area, the place, the number of the selling agent and adjoining chart, as well as the geographical and traffic density, the crew on board the ship's characteristics, and so on. In this study we propose the way to solve the problem. firstly, the category of the fishing vessel which should carry the chart on bard under the related laws are required to be lowered to 10 gross tons. Besides a ship inspector should examine if the charts covering the area where to navigate even when the temporary inspection is done are carried on board property. Secondly, the inspection body or the controlling office of ship's entry and departure should check throughly whether the ships concerned carry the chart on board. Thirdly the fishing vessels should used the fishing charts, and the body concerned should train the offices about how to use chart, especiany the difference between Tokyo datum and WGS-84 datum. Fourthly the customized chart such as an atlas like a map, a calenda-type chart, a small chart, as a coated chart needs to be publish for the safety of small ship and fishing vessel. Fifthly, it is advisable to draw a recommended course in the route where the coastal navigate mainly and in the narrow channel, The adjoining area should be improved, as well as the qualify of the chart paper. Sixthly, publication of additional new chart in the southern part of East Sea, the eastern part of South Sea, the western part of South Sea and middle part of Yellow Sea near Incheon port should be thought over. Seventhly, the number of chart selling agent should be increased for the sake of purchaser in proportion to the number of port, and small correction of charts in selling agent must be carried out completely.

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A Ten-Year Analytical Comparative Study on the International Journal of Consumer Studies

  • Shin, Dongjin
    • Journal of Distribution Science
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    • v.12 no.7
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    • pp.63-75
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    • 2014
  • Purpose - This study analyzes topics discussed in the International Journal of Consumer Studies through a content analysis, to reveal the impact of cross-cultural management in consumer research. Research Design, Data, and Methodology - The International Journal of Consumer Studies has the highest impact factor among international consumer journals, and was chosen for research. This study investigated 712 articles, covering a ten-year period. Results - A total of 82 articles were found to be related to cross-cultural management, out of 712 articles. This shows a need for improvement in the area of cross-cultural management, and implies that the discipline of cross-cultural management will continue to have a significant impact on consumer studies. Conclusions - While content analyses have been conducted in the area of consumer research in the past, a comparative content analysis in the International Journal of Consumer Studies is unprecedented. This study offers insights on the comparative analysis of general articles and articles related to cross-cultural management, which will be useful reference points for future global markets and fields in distribution and consumer research.

Modeling of High Density of Ozone in Seoul Area with Non-Linear Regression (비선형 회귀 모형을 이용한 서울지역 오존의 고농도 현상의 모형화)

  • Chung, Soo-Yeon;Cho, Ki-Heon
    • The Korean Journal of Applied Statistics
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    • v.22 no.4
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    • pp.865-877
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    • 2009
  • While characterized initially as an urban-scale pollutant, ozone has increasingly been recognized as a regional and even global-scale phenomenon. The complexity of environmental data dynamics often requires models covering non-linearity. This study deals with modeling ozone with meteorology in Seoul area. The relationships are used to construct a nonlinear regression model relating ozone to meteorology. The model can be used to estimate that part of the trend in ozone levels that cannot be accounted for by trends in meteorology.

Application of 1mm fictitious notch radius approach to the fatigue strength assessment of welded joint (1mm 가상 노치 반경을 이용한 용접부 피로강도 평가에 관한 연구)

  • Kim Yu Il;Gang Jung Gyu;Heo Ju Ho
    • Proceedings of the KWS Conference
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    • v.43
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    • pp.275-277
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    • 2004
  • Fictitious notch radius approach is based on the Neuter's microstructural support hypothesis which assumes that fatigue crack is governed by highly stressed volume of the material right on the weld toe area rather than the surface stress at a pin point of weld toe area. Variety of successes have been achieved in applying this methodology to the fatigue of welded joint, hence, it became one of recommended design procedure in IIW's recommendation as well as many ship classification societies. 1mm fictitious notch radius approach was applied to the various fatigue problems of welded joints in this study covering the effect of weld size, notch stress calculation for 3D geometry and low cycle fatigue problem. It was found that fictitious notch radius approach fumed out to be very effective and accurate in dealing with fatigue strength of welded joint.

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Grouping Algorithms of Zigbee Nodes for Efficient Data Transmission to Long Range (효율적인 원거리 데이터 전송을 위한 Zigbee 노드들의 그룹화 알고리즘)

  • Woo, Sung-Je;Shin, Bok-Deok
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.61 no.4
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    • pp.632-638
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    • 2012
  • ZigBee network, based on PHY, MAC layer provides a specification for a suite of high level communication protocols using small, low-power digital radio based on an IEEE 802.15.4 standard. Meshing is a type of daisy chaining from one device to another. This technique allows the short range of an individual node to be expanded and multiplied, covering a much larger area. Each wireless technology that makes it to market serves a special purpose or function. Zigbee provides short-range connectivity in what is called a personal-area network (PAN). Within ZigBee PAN coordinator as manages an entire ZigBee network, the short range of frequency band was only selected because the technology allows typically less than 100 kbp or ZigBee troubles in retransmission processing and delaying data tranmission works to create unproductive condition of work. This research was proposed the method, based on short range frequency of zigBee nodes enable to long range of remote data transmission with specific algorithm tools.

Circular Ring Open-Ended Monopole Antenna with Strip for WLAN Dual-Band Operations

  • Yoon, Joong-Han
    • Journal of information and communication convergence engineering
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    • v.12 no.1
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    • pp.1-7
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    • 2014
  • A novel design of a simple circular ring with open-ended monopole antenna for wireless local area network (WLAN) applications is proposed in this article. The proposed antenna consists of an open-ended circular ring and $50-{\Omega}$ microstrip feed-line. The proposed antenna is capable of generating two separate resonant modes with good impedance-matching conditions. A prototype of the proposed antenna is designed, fabricated, and measured. Acceptable agreement between the measurement and simulation results is achieved. Experimental results show that the proposed antenna has operating bandwidths of 1.99-3.04 GHz and 5.08-6.1 GHz with a return loss of less than -10 dB, covering the required bandwidths of the 2.4/5.2/5.8-GHz WLAN standards. This is a microstrip antenna for IEEE 802.11a/b wireless local area networks applications. Meanwhile, the two-dimensional (2D) radiation patterns and three-dimensional (3D) gain performance of the antenna are also observed and discussed.