A Study on Impurity Depth Profile by Secondary Ion Mass Spectrometer

Mirang Byoen,Da Yung Kim,Tae Eun Hong 한국진공학회 2020 한국진공학회 학술발표회초록집 Vol.2020 No.8

위장관 평활근종양

박병우(Byoen Woo Park),박정수(Cheong Soo Park),민진식(Jin Sik Min),이미경(Mi Kyung Lee),최인준(In Joon Choi) 대한외과학회 1988 Annals of Surgical Treatment and Research Vol.34 No.5

조선해양플랜트산업 제조업체의 구매·판매 네트워크: 전라남도를 중심으로

변장섭 ( Jangseop Byoen ),나주몽 ( Jumong Na ),유창호 ( Changho Yu ),신승식 ( Seungsik Shin ) 한국경제지리학회 2017 한국경제지리학회지 Vol.20 No.1

본 연구는 사회네트워크분석을 이용하여 전라남도 조선해양플랜트산업 제조업체의 구매·판매 네트워크 구조의 실태를 파악하였다. 그 분석결과는 다음과 같다. 전라남도 조선해양플랜트산업은 대부분 중·소기업들로 구성되어 있어서 대기업과의 하청관계로 인한 구매·판매 네트워크가 주를 이루고 있다. 특히 제품의 판매를 위한 거래에서는 대기업이 입지한 영남권의 제조업체로 거래가 집중되는 실태를 보이고 있다. 이러한 결과를 보면, 최근 조선산업의 위기에 직면하여, 영남권에 위치한 대기업의 구조조정은 그 기업들에 의존성이 큰 전라남도 조선해양플랜트산업에 타격이 클 것으로 예상된다. 따라서 전라남도 조선해양플랜트산업이 이러한 위기에 대응하기 위해서는 판매 거래를 위한 네트워크를 보다 다양하게 확보해야 하며, 이를 위해서는 지역 내 판매업체를 발굴하거나 육성하는 정책이 필요할 것이다. This study analyzed the actual condition of the purchasing and selling network structures of manufacturing firms related the shipbuilding and offshore plant industry in Jeollanam-do using the social network analysis. The analysis results are as follows. The networks are often traded by subcontracting relationship with large firms because the industry is configured in most small and medium-sized firms. In particular, it was found to actual situation that selling transactions are being concentrated in the manufacturing firms of Yeongnam where large firms have located. Structural adjustment of the large firms located in the Yeongnam is expected to strike a blow to the manufacturing firms related the shipbuilding and offshore plant industry in Jeollanam-do due to the recently crisis in the shipbuilding industry. Therefore, it is necessary to secure a diversity of networks for selling transactions, and to discover and promote that selling firms related the shipbuilding and offshore plant industry in Jeollanam-do, in order to cope with such a crisis.

"Absolt Vodka" 플래그쉽 스토어 디자인에 관한 연구 -증류 장치 컨셉 디자인 중심으로-

변승희 ( Seung Hui Byoen ),신윤화 ( Yun Hwa Shin ),유혜리 ( Hye Lee Yu ),이진민 ( Jin Min Rhie ),이옥재 ( Ok Jae Lee ),정승영 ( Seung Young Jung ) 숙명여자대학교 산업디자인연구소 2014 숙명디자인학 연구 Vol.18 No.-

본 연구는 주류 브랜드 Absolut Vodka (앱솔루트 보트카)의 브랜드 플래그쉽 스토어에 대한 기본 계획안을 위한 연구이다. 브랜드 스페이스는 브랜드의 가치와 속성에 따라 단계별 공간 마케팅 전략을 세워야 한다. 앱솔루트 보드카의 경우 국내의 브랜드 인지도와 시장의 규모를 고려하였을 경우 감성이나 경험을 기초로 한 브랜드를 홍보할 수 있는 전략적 공간이 필수적이다. 그럼에도 불구하고 현재 국내에서는 앱솔루트 보드카의 유통경로는 대형마트나 주류 백화점을 통해 유통되어 브랜드 이미지가 저하되고 있다. 이러한 현재 상황을 개선하고 브랜드이미지 재고를 위하여 앱솔루트보드카는 브랜드의 홍보와 체험이 가능한 플래그쉽스토어가 필요하다고 분석하였으며 기획/디자인하였다. 수업을 통해 이루어지는 디자인 진행과정은 교수의 제안과 학생의 피드백의 단계적 교호작용으로 이루어진다. 본 논문에서는 학생들의 작업과정과 결과물을 통해 플래그쉽스토어 디자인 프로세스의 과정과 기본 구조를 이해하도록 한다. This study is for the basic plan of the liquor br and ``Absolut Vodka`` brand flagship store. The design strategies of brand value and properties is indis pensable for brand store design. In the case of Absolut vodka brand, Considering for its awareness and domestic size of the mark et, the element of emotional display and consumer experience is essential point for the stores. Nevertheless, the domestic distribution channels of the Absolut Vodka and liquor stores in the distribution make the brand image become getting worse. This design project is for this situation of Absolut vodka, B rand market. Above all, design team made a decision that Absolut Vodka needs flagship store in korean market as the analysis for development of bran d image. the process made through the design of the class of professor and student`s feedback is consists of the transaction step-by-step. This paper presents the work of the brand design basis on emotion an d the consumer`s experience.

온도모델 자이로 바이어스 추정 칼만 필터 알고리즘 개발과 이를 이용한 절대 지향각 센서 신호 부재 시 차량 지향각 추정

변상진(Sang Jin Byoen),홍효성(Hyosung Hong),원문철(Mooncheol Won) 대한기계학회 2018 大韓機械學會論文集A Vol.42 No.4

AHRS(Attitude and Heading Reference System)에서 지향각(Heading Angle)을 추정하기 위해선 정확한 3축 각속도와 절대 지향각이 필요하다. 기존 연구들은 자이로 바이어스를 대비해 GPS 나침반이나 지자기 센서 등과 같은 절대 지향각 센서를 사용했다. 하지만 지자기 센서는 오차가 크고 GPS 나침반은 높은 빌딩이 많거나 터널과 같은 곳에서 정확한 값을 얻기 어렵다. 본 논문에서는 비교적 짧은 시간동안 절대 지향각 센서를 사용하지 않고 자이로 바이어스를 추정하는 온도 모델 칼만 필터와 보상된 각속도를 이용한 지향각 추정 알고리즘을 제시한다. 자이로 바이어스는 센서의 움직임이 없는 정지 상태일 때만 측정할 수 있어 실험을 통해 센서의 움직임이 정지 상태와 유사할 때를 찾는 알고리즘을 고안하였다. 또한 바이어스 추정 칼만 필터의 초기 상태변수 값에 따른 지향각 오차를 실내 실험 및 실제차량 실험을 통해 확인하였다. Accurate thee-axis angular velocity and absolute orientation angles are required to estimate the heading angle of an attitude and heading reference system. Previous studies have used a Global Positioning System (GPS) compass or geomagnetic sensor to compensate for gyro bias. However, geomagnetic sensors can produce a large error, and it is difficult to obtain accurate GPS compass values in specific areas, such as tunnels and skyscrapers. In this paper, we propose (1) a temperature model Kalman filter that estimates gyro bias without using an absolute heading sensor, for a relatively short time, and (2) a heading angle estimation algorithm using compensated angular velocity. Gyro bias can be measured only if there is no sensor movement. Therefore, this paper proposes an algorithm to discover if the sensor movement is similar to a no-movement state, via experiments. Additionally, the performance of the bias estimation Kalman filter is validated with an indoor experiment and outdoor vehicle tests.

木材 乾燥過程의 動 彈性的 特性

변희섭(Hee Seop Byoen),홍병화(Byung Wha Hong) 한국가구학회 1993 한국가구학회지 Vol.4 No.2

To clarify the characteristics of the dynamic elasticity during wood drying. dynamic Young' s modulus and internal friction were investigated in drying chinese cork oak (Quercus variabiis blume) and black locust (Robinia pseudo-acacia L.) (hardwoods) and black pine (Pinus thunbergii Parl) (softwood). The results are summerized as follows :<br/> 1. The dynamic Young's modulus in chinese cork oak increased with decreasing moisture content and this was more pronounced at high temperatures.<br/> 2. In black locust the dynamic Young's modulus did not change above the FSP, while it increased with decreasing moisture content belo ι the FSP.<br/> 3. There was no change in the dynamic Young ’ s modulus of black locust at high temperatures.<br/> 4. The internal friction in black pine and chinese cork oak showed little change with decreasing moisture content. The internal friction in black pine was higher than that in chinese cork oak.<br/> 5. The internal friction in black locust decreased with decreasing moisture content in low temperatures.<br/>

Analysis of Natural Disaster Risk based on Flood, Wind and Snow Risk

Yu In sang,Byoen Ji seok,Kim Ha yong,Jeong Sang man 한국방재학회 2017 한국방재학회논문집 Vol.17 No.6

본 연구에서는 대구, 울산, 경북, 강원 지역을 대상으로 수해, 풍해, 설해 각각의 위험지도를 개발하였고 통합된 자연재해 위험지도를 개발하였다. 수해위험지도 작성을 위해 100년빈도 홍수범람지도가 활용 되었고, 홍수범람지도 분석 결과 연구대상지역 36,860 ㎢ 중 1.8%인 670 ㎢가 침수 되는 것으로 분석되었다. 풍해위험지도 작성을 위해 100년 빈도 풍속을 산정하였고 그 결과, 최소풍속은 19.3 m/s, 최대풍속은 59.9 m/s로 분석되었으며 설해 위험지도 작성을 위해 100년 빈도 적설하중을 산정하였고 최소적설하중은 0.31 kN/㎡, 최대적설하중은 7.53 kN/㎡로 산정 되었다. 홍수위험도를 안전, 경계, 위험, 매우위험 4개 등급으로 구분하였고 이 4개의 등급은 홍수에 의한 건물과 사람의 피해 정도를 나타낸다. 동일한 4개의 등급이 풍해, 설해 위험도를 결정하는데 적용되었다. 수해, 풍해, 설해 위험도가 통합된 자연재해 위험지도는 행정구역별 수해, 풍해, 설해의 과거 피해액으로부터 산정된 가중치를 적용하여 개발되었다. This study developed flood, wind and snow risk map, after which an integrated natural disaster risk map of Daegu, Ulsan, Gyeongbook and Gangwon was generated. A 100-year flood inundation map was used for developing flood risk map and the results show 670 ㎢ (1.8%) of the whole 36,860 ㎢ study area was flooded. While for a 100-year wind velocity frequency mapping, results showed a range of 19.3 m/s to 59.9 m/s. For 100-year snow load frequency, the results ranged from 0.31 kN/㎡ to 7.53 kN/㎡. Four levels of risk were used to identify the flood risk namely: Safe, Warning, Dangerous and Severely Dangerous. These levels represents the degree of damage caused by flood to buildings and people lives. The same levels of risk were adopted for the determination of wind and snow risk. Integrated natural disaster risk map was developed by applying weights calculated from flood, wind and snow damage according to administrative districts to each risk map.

도시쇠퇴 인식구조를 통한 도시재생사업의 추진과정의 평가에 관한 연구

박성현(Park, Sung Hyun),변장섭(Byoen, Jang Seop),유창호(Yu, Chang Ho) 한국지적정보학회 2017 한국지적정보학회지 Vol.19 No.1

도시재생사업은 주민들이 원하는 방향, 주민들이 원하는 환경을 만들어가는 과정이어야 한다. 그러므로 다양한 인식을 가지고 있는 주민들의 생각을 객관적으로 파악하려는 노력이 필요하다. 본 연구에서는 도시쇠퇴를 바라보는 주민인식 결과를 바탕으로 목포시 도시재생 선도지역의 추진과정을 평가하였다. 구체적으로 목포시 도시재생지역의 쇠퇴 특성과 도시재생활성화계획을 살펴보았고, DEMATEL조사를 통해 쇠퇴문제를 바라보는 주민들의 인식구조를 분석한 후, 그 결과를 바탕으로 도시재생사업을 추진과정을 경험적으로 평가하였다. 분석결과, 상가지구의 쇠퇴인식은 매력 있는 시설 부족이 가장 핵심적이고 원인적인 문제로 나타났으며, 이 문제는 빈 점포의 증가, 시대변화에 뒤떨어진 상업패턴 등에 직접적인 명향을 끼쳤고, 결과적으로 공공편의시설을 낙후하게 만들어가는 구조이다. 그에 반해 주거지구의 쇠퇴인식은 상대적으로 지역의 고령화가 쇠퇴의 원인이면서 중심적인 성격에 자리하고 있고, 이는 나쁜 지역이미지와 노후 건축물 밀집 문제와 연계되면서 결과적으로는 공가·폐가를 증가시키는 구조이다. 이러한 인식구조의 결과를 바탕으로 2015년 9월부터 2017년 2월까지의 목포시 도시재생사업의 추진결과를 평가하였다. The Urban Regeneration Project should proceed in the direction of what the local residents really want, that is the environment they desire. So, it is necessary to recognize the perceptions of local individuals with an objective view. The following study was conducted to evaluate the implementation process of the Urban Regeneration Project in Mokpo-City within target districts. It is based on a survey of local residents’perception of urban decline. The study was conducted in three steps. First, an overall examination of the Urban Regeneration Project was conducted in which target districts were examined for elements of deterioration. Second, the perception of residents in regards to urban decline was analyzed based on the DEMATEL method. Lastly, an empirical assessment was taken of the perceptions of local residents. The results showed that a shortage of attractive facilities were the main reason for the perception of urban decline within commercial districts. Ultimately, the increase of vacant stores and an outdated commercial model were the direct causes of the loss of public facilities(amenities). On the other hand the perception of decline within residential districts was related to community aging. Because of aged buildings and a poor image, the number of vacant and deserted houses increased more and more. The preceding analysis is the basis of evaluation for the City of Mokpo’s Urban Regeneration Project which was carried out from 2015. Sep. to 2017. Feb.

Original Articles : Evaluation of an Experimentally Designed Stereotactic Guidance System for Determining Needle Entry Point during Uniplanar Fluoroscopy-guided Intervention

( Jae Heon Lee ),( Gye Rok Jeon ),( Jung Hoon Ro ),( Gyeong Jo Byoen ),( Tae Kyun Kim ),( Kyung Hoon Kim ) 대한통증학회 2012 The Korean Journal of Pain Vol.25 No.2

Background: In discography performed during percutaneous endoscopic lumbar discectomy (PELD) via the posterolateral approach, it is difficult to create a fluoroscopic tunnel view because a long needle is required for discography and the guide-wire used for consecutive PELD interrupts rotation of fluoroscope. A stereotactic system was designed to facilitate the determination of the needle entry point, and the feasibility of this system was evaluated during interventional spine procedures. Methods: A newly designed stereotactic guidance system underwent a field test application for PELD. Sixty patients who underwent single-level PELD at L4-L5 were randomly divided into conventional or stereotactic groups. PELD was performed via the posterolateral approach using the entry point on the skin determined by premeasured distance from the midline and angles according to preoperative magnetic resonance imaging (MRI) findings. Needle entry accuracy provided by the two groups was determined by comparing the distance and angle measured by postoperative computed tomography with those measured by preoperative MRI. The duration and radiation exposure for determining the entry point were measured in the groups. Results: The new stereotactic guidance system and the conventional method provided similarly accurate entry points for discography and consecutive PELD. However, the new stereotactic guidance system lowered the duration and radiation exposure for determining the entry point. Conclusions: The new stereotactic guidance system under fluoroscopy provided a reliable needle entry point for discography and consecutive PELD. Furthermore, it reduced the duration and radiation exposure associated with determining needle entry. (Korean J Pain 2012; 25: 81-88)

Spinal Cord Stimulation in the Treatment of Postherpetic Neuralgia in Patients with Chronic Kidney Disease: A Case Series and Review of the Literature

Baek, In-Yeob,Park, Ju-Yeon,Kim, Hyae-Jin,Yoon, Ji-Uk,Byoen, Gyeong-Jo,Kim, Kyung-Hoon The Korean Pain Society 2011 The Korean Journal of Pain Vol.24 No.3

Background: Postherpetic neuralgia (PHN) is usually managed pharmacologically. It is not uncommon for patients with chronic kidney disease (CKD) to suffer from PHN. It is difficult to prescribe a sufficient dose of anticonvulsants for intractable pain because of the decreased glomerular filtration rate. If the neural blockade and pulsed radiofrequency ablation provide only short-term amelioration of pain, spinal cord stimulation (SCS) with a low level of evidence may be used only as a last resort. This study was done to evaluate the efficacy of spinal cord stimulation in the treatment of PHN in patients with CKD. Methods: PHN patients with CKD who needed hemo-dialysis who received insufficient relief of pain over a VAS of 8 regardless of the neuropathic medications were eligible for SCS trial. The follow-up period was at least 2 years after permanent implantation. Results: Eleven patients received percutaneous SCS test trial from Jan 2003 to Dec 2007. Four patients had successfully received a permanent SCS implant with their pain being tolerable at a VAS score of less than 3 along with small doses of neuropathic medications. Conclusions: SCS was helpful in managing tolerable pain levels in some PHN patients with CKD along with tolerable neuropathic medications for over 2 years.