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검색결과 21,846건 처리시간 0.038초

Oncoplastic Breast Conserving Surgery with Nipple-areolar Preservation for Centrally Located Breast Cancer: a Retrospective Cohort Study

  • Ren, Zhao-Jun;Li, Xiu-Juan;Xu, Xin-Yu;Xia, Lei;Tang, Jin-Hai
    • Asian Pacific Journal of Cancer Prevention
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    • 제15권12호
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    • pp.4847-4849
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    • 2014
  • A compariosn was made of survival outcomes of oncoplastic breast conserving therapy (oBCT) with nipple-areolar (NAC) preservation in women with centrally located breast cancer (CLBC) undergoing modified radical mastectomy (MRM) in China in a matched retrospective cohort study. We used a database including patients who received oBCT (n=91) or MRM (n=182) from 2003 to 2013 in our hospital. Matching was conducted according to five variables: age at diagnosis, axillary lymph node status, hormone receptor status, human epidermal growth factor-like receptor 2 status (HER-2) and tumor stage. The match ratio was 1:2. Median follow-up times for the oBCT and MRM groups were 83 and 81 months, respectively. There were no significant differences in 87-month overall, local, or distant recurrence-free survival between patients with oBCT and MRM (89%vs.90%; 93%vs.95%; 91%vs.92%;). For appropriate breast cancer patients, oBCT for CLBC is oncologically safe, oncoplastic techniques improving cosmetic outcomes.

익수자 구조를 위한 구조 장비 디자인 연구 (Design Research for Life-saving Rescue Equipment at Water)

  • 전영원;이혁수
    • 융복합기술연구소 논문집
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    • 제2권2호
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    • pp.13-19
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    • 2012
  • This Design research is a design of rescue equipment combined with beach garbage can for prompt rescue at the time of the accident in water. As a usual, it is used as garbage can hanging a garbage bag on the holders located in both sides, and it can be used to rescue drowning men promptly taking out a rescue tube located inside of the equipment at the time of the accident in water. Support is consisted of beach one, wall-hanging one and pipe one, and it could be installed to match the situation because it can be combined with all main frames. As a usual, it is used as garbage can in seaside, but it can be used to rescue drowning men promptly taking out a rescue tube after pulling the handle located in front of main frame at the time of the accident in water, and it can be used to pull drowning men out of the water because rope is kept in rescue tube.

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관광농원 단위 공간 모델에 관한 연구 (A Study on the Suggestion of the Spatial Model for the Tourism Farm)

  • 김정화;이춘석
    • 농촌계획
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    • 제3권1호
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    • pp.68-76
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    • 1997
  • The purpose of this study is to suggest the spatial model which can be applied to the tourism farm plan. This study includes : (1) the analysis of existing facilities and activities of 22 tourism farms in Kyunggido and (2) the survey questionnaire about user's attitudes in 3 tourism farms. The results can be summarized as follows : 1) The .Major activities in the tourism farm are the resting/playing based on the natural environment and group meeting. 2) Average area is 17879.4uf (5418 坪). The most frequent facility is restaurant and lodge. 3) It is necessary to propose various types of tourism farm considering both natural conservation and development of rural region and users'various wants. The tourism farms are officially classified into four types Natural education type, Mind and body training type, Weekend farm type, Recreation type. 4) The space for tourism farm is divided into an area of production, and area of processing, and an area of convenience/recreation. 5) It is desired the convenience facilities are located in front of a farm, and the area of production is located at the back of a farm, and simple rest facilities are located all of the farm. 6) The weekend farm model and processing/convenient facility model are proposed in this study. Three types of the weekend farm models are proposed - simple type, composite type, and garden type. Three types of the processing/convenient models are proposed one building type, adjacent building type, and scattered building type.

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음극이 자동 정렬된 화산형 초미세 실리콘 전계방출 소자 제작 (Fabrication of Self -aligned volcano Shape Silicon Field Emitter)

  • 고태영;이상조;정복현;조형석;이승협;전동렬
    • 한국진공학회지
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    • 제5권2호
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    • pp.113-118
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    • 1996
  • Aligning a cathode tip at the center of a gate hole is important in gated filed emission devices. We have fabricated a silicon field emitter using a following process so that a cathode and a gate hole are automatically aligned . After forming silicon tips on a silicon wafer, the wafer was covered with the $SiO_2$, gate metal, and photoresistive(PR) films. Because of the viscosity of the PR films, a spot where cathode tips were located protruded above the surface. By ashing the surface of the PR film, the gate metal above the tip apex was exposed when other area was still covered with the PR film. The exposed gate metal and subsequenlty the $SiO_2$ layer were selectively etched. The result produced a field emitter in which the gate film was in volcano shape and the cathode tip was located at the center of the gate hole. Computer simulation showed that the volcano shape and the cathode tip was located at the center of the gat hole. Computer simulation showed that the volcano shape emitter higher current and the electron beam which was focused better than the emitter for which the gate film was flat.

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Study on Path Planning Algorithms for Unmanned Agricultural Helicopters in Complex Environment

  • Moon, Sang-Woo;Shim, David Hyun-Chul
    • International Journal of Aeronautical and Space Sciences
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    • 제10권2호
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    • pp.1-11
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    • 2009
  • In this paper, two algorithms to solve the path planning problem with constraints from obstacles are presented. One proposed Algorithm is "Grid point-based path planning". The first step of this algorithm is to set points which can be the waypoints around the field. These points can be located inside or outside of the field or the obstacles. Therefore, we should determine whether those points are located in the field or not. Using the equations of boundary lines for a region that we are interested in is an effective approach to handle. The other algorithm is based on the boundary lines of the agricultural field, and the concept of this algorithm is well known as "boustrophedon method". These proposed algorithms are simple but powerful for complex cases since it can generate a plausible path for the complex shape which cannot be represented by using geometrical approaches efficiently and for the case that some obstacles or forbidden regions are located on the field by using a skill of discriminants about set points. As will be presented, this proposed algorithm could exhibit a reasonable accuracy to perform an agricultural mission.

우리나라 사찰건축(寺刹建築)의 입지(立地)와 교통(交通)의 연관성(聯關性)에 관한 연구(硏究) (Relation between the Location of the Korean Buddhist Temples and Transportation)

  • 김종헌
    • 건축역사연구
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    • 제9권2호
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    • pp.19-32
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    • 2000
  • There is an opinion that Korean Buddhist Temples located in mountains(山地寺刹) should be built since the Secret Buddhism was introduced and the Zen Buddhism was widely distributed over But, Korean Buddhist temples were already in the mountains before the introduction of Zen Bluddhism. Moreover, Zen Buddhist temples were actually not located at mountainous region, but located at plain area in mountains. Thus it is necessary to modify the idea of that the location of temples were only under the influence of Secret Buddhism. The purpose of this study is to analyze the relation between the location of the Korean Buddhist Temples and transportation. The results of this study are as follows; Based on the legends originated from the buddhist temples, the traditional maps, and the political situations, it has been disclosed that the locations of Korean Buddhist Temples have the relations with the traffic roads. Therefore politically, militarily, and socially, the Korean Buddhist Temples have played important roles since the Three Kingdoms. The Buddhist temples need lodging facilities called Won-Woo for the ordinary people, due to change of the characteristics of the Buddhism in Korea from politically to socially. But the lodging facilities stood apart from main region for the ascetic exercise of the Buddhist priests.

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조선후기(朝鮮後期) 양사재(養士齋) 건축(建築)의 특성(特性)에 관한 연구 -영(嶺).호남지역(湖南地域)을 중심(中心)으로- (A Study on the Characteristics of Yang-Sa-Jae Architecture in the Late Chosun Dynasty - Focusing on Youngnam and Honam province -)

  • 조영화
    • 건축역사연구
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    • 제9권3호
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    • pp.7-22
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    • 2000
  • As the educational function of Confucian school in the late Chosun dynasty had been declined, the other educational institution called YANGSAJAE was established. The founders of the institution was either local authorities or local Confucianists. Otherwise the institution was established by the cooperation of both local authorities and local Confucianists. YANGSAJAE began to be established from the 16th century. Most of them was founded in 1700s. In 1800s, it was not so difficult to see YANGSAJAE in many towns in Young nam and Honam provinces. The institution was located in separate places at the early stage of foundation. But since the middle of 1700s, the institution was located in or near the Confucian school. As a consequence, this influenced the location of Confucian schools in the late Chosun dynasty. In Youngnam province, the institution was mainly located near the Confucian school or in a separate place. On the contrary, most of the institution were constructed within Confucian school in Honam province. There were two types of the flat composition: one is based on hall and the other is based on room. The hall type, which had a hall in the middle and rooms in both sides, was general. The hall type usually had a size of 4-kan in width and 1.5-kan in length. The half-hipped roof was the general type and intimately related to the roof of Myung-Ryun Dang of local Confucian School.

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대구 앞산 달비골의 국지풍 특성에 관한 관측적 연구 (Observational Study on the Local Wind of the Dalbi-Valley Located at Ap-Mountain in Daegu)

  • 구현숙;권병혁;김해동
    • 한국환경과학회지
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    • 제16권1호
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    • pp.73-79
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    • 2007
  • The purpose of this study is to clarify the effect of mountain-valley wind on heat island formed in urban area which is located around valley mouth. The meteorological observations were carried out over the Dalbi-valley under a clear summer pressure patterns, and some consideration were tried from the results. In order to make clear the climatological characteristics and air-mass modification process of the mountain-valley wind over the valley, the meteorological observations were done simultaneously at two points. The observational points were located at the breast and valley mouth parts, respectively. The results were as follows: First, it was found that the valley wind was observed through the daytime, and it was replaced by a mountain wind after sunset. Second, the heat budget is also investigated with observation data. The sensible heat flux over the breast of Dalbi-valley reached to about $200 W/m^2$ during daytime, which is a little more than one third of net radiation. On the other hand, the sensible heat flux represented negative values during nighttime. But the sensible heat flux over the valley mouth covered by asphalt showed plus value(about $20{\sim}30 W/m^2$) during the nighttime.

충북 괴산군 달천 유역 농촌마을의 입지특성에 관한 연구 (A Study on the Location Characteristics of Rural Village along a Dalchon River in Geosan of Chungbuk Province)

  • 노선화;김성중;김태영
    • 한국농촌건축학회논문집
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    • 제7권1호
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    • pp.19-30
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    • 2005
  • This study is carried out to understand the characteristic of location in vernacular agricultural villages by judging from natural environment around the village. For this purpose, there were selected 17 villages of the riverside villages in Geosan Area which lean against Dalchoen River. After classifying these samples by the morphorogical approach, according to compare them with pre-researched villages, the methodology of spatial structure was investigated in agricultural villages. As a result of the study, the relationship between the agricultural villages and the shape of Dalcheon River can be classified by 3 types that are twisted around villages, attacked villages, and paralleled with villages. First of all, twisted type is located in river terraces, river safety zone and taken a image of the riverside agricultural village. Secondary, attacked type is located in beside riffle, and taken a image of a fishing village. Finally, paralleled type is located in straightly flowing river.

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갯벌의 수직적 환경 특성 (The vertical environmental characteristics in the tidal flat sediments)

  • 김종구;유선재
    • 한국환경과학회지
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    • 제9권2호
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    • pp.125-129
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    • 2000
  • As one of the fundamental survey to evaluate purification capacity of pollutants at the tidal flat sediments, we studied vertical environmental characteristics in three tidal flat sediments, Chunjangdae, Eueunri and Gyewhado. These are dissmilar to external feature in each other. The results of this study may be summarized as followed; As the results of particle analysis, Eueunri tidal flat fediment located in Keum river estuary consists of 98.98% as silt & clay, Chunjangdae tidal flat sediment located in SeocheonGun consists of 97.99% as sand. And Gyewhado tidal flat sediment located in Saemankeum in Saemankeum area consists area consists of 32.81% as silt & clay and 67.19% as sand. The concentration of organic pollutants(I.L., COD, POC, PON) in Eueunri tidal flat sediment which highly content of silt & clay were 3~4 times higher than others. The concentration of organic pollutants at each layer were slightly increase goes with deepen layer. The linear correlation between I.L. and COD, POC, PON were obtained. Correlation coefficients were in range of 0.821~0.940. Also the correlation between pH and COD, POC, PON were high(>r=0.9). Filteration rate in Chunjangdae tidal flat sediment was 0.01584cm/s as mean value, but the other were almost nothing filtered off.

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