• 한국산학기술학회논문지
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• 제13권11호
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• pp.5566-5571
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• 2012

블록전단파괴는 인장부재의 한계상태에 해당하는 것으로 강구조물의 인장부재 또는 연결부 설계 시 주의를 요한다. 많은 연구 결과와 설계기준에서는 블록전단파괴에 대한 볼트 이음 방식의 영향을 고려하지 않고 있다. 본 연구에서는 볼트 이음 방식(지압이음과 마찰이음)이 블록전단파괴의 파괴모드와 파괴강도에 미치는 영향을 분석하고자 인장실험을 실시하였다. 실험결과의 분석으로부터 설계기준, 지압이음, 마찰이음에 따른 파괴모드의 차이를 제시하였으며 마찰이음에서 발생되는 마찰력으로 인한 블록전단파괴강도의 변화를 고찰하였다.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2018년도 추계학술대회
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• pp.304-305
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• 2018

최근 Industrial-IoT(IIoT) 솔루션은 2016년 기준 최대 55%를 차지하였고, 기술 혁신과 다양한 신규 비즈니스 모델이 개발되고 있다. 본 논문에서는 IIoT 디바이스를 다양한 환경에서 적용하고, 손쉽게 센서를 추가/변경/삭제하기 위해 블록형 IIoT 디바이스 연동이 가능한 온톨로지 시스템을 구현한다. 제안된 시스템은 IIoT 디바이스, 블록형 모듈과 온톨로지 서버로 구성되어있다. IIoT 디바이스에 블록형 모듈이 연결되면 온톨로지 서버를 통해 적합한 드라이버를 설치하고, 펌웨어를 다운로드한다. 블록이 추가/변경/삭제되어도 자동으로 업데이트가 가능하다. 실험을 통해 서버의 정상 구동과 소프트웨어의 업데이트 및 다운로드가 정상적으로 구현되는 것을 확인하였다.

• 한국정보시스템학회지:정보시스템연구
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• 제29권1호
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• pp.93-111
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• 2020

Purpose The purpose of this paper is to observe the relative priorities of importances among the modified versions of Block chain system, being based on AHP decision support model which should be also proposed in this paper. Design/methodology/approach Four versions modified from the beginning of Block chain were divided into Public& Permissionless, Private&Permissionless, Public&Permissioned and Private&Permissioned types. Five criteria for evaluating the four versions whether the version were suitable for Medical information system were introduced from five factors of Technologies Accept Model, which were Security, Availability, Variety, Reliability and Economical efficiency. We designed Decision support model based on AHP which would select the best alternative version suitable for introducing the Block chain technology into the medical information systems. We established the objective of the AHP model into finding the best choice among the four modified versions. First low layer of the model contains the five factors which consisted of Security, Availability, Variety, Reliability and Economical efficiency. Second low layer of the model contains the four modified versions which consisted Public&Permissionless, Private&Permissionless, Public&Permissioned and Private& Permissioned types. The structural questionnaire based on the AHP decision support model was designed and used to survey experts of medical areas. The collected data by the question investigation was analyzed by AHP analysis technique. Findings The importance priority of Security was highest among five factors of Technologies Accept Mode in the first layer. The importance priority of Private&Permissioned type was highest among four modified versions of Block chain technologies in second low layer. The second importance priority was Private&Permissionless type. The strong point of Private&Permissioned type is to be able to protect personal information and have faster processing speeds. The advantage of Private& Permissionless type is to be also able to protect personal information as well as from forging and altering transaction data. We recognized that it should be necessary to develop new Block chain technologies that would enable to have faster processing speeds as well as from forging and altering transaction data.

• The Korean Journal of Pain
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• 제7권1호
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• pp.88-91
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• 1994

Headache, like low back pain, is one of the most common of pain conditions. Many data suggest that nerve block can be one of effective treatments in managing headache except pure psychologic or surgical origin, because mechanism of headaches have neurologic, vascular or local tissue pathology. We experienced two types of headache; episodic tension-type headache, and benign exertional headache; successful treatment consist of nerve block and modulation of exercise, respectively.

• Communications for Statistical Applications and Methods
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• 제9권2호
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• pp.443-450
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• 2002

In this paper, block designs for control versus test comparisons among the lines for diallel crosses are proposed. These block designs are constructed by using balanced incomplete block designs. Also, the efficiencies of the diallel crosses block designs obtained through this method are tabulated for number of lines 23 or less.

• 한국음향학회지
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• 제25권3호
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• pp.113-120
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• 2006

본 논문은 slow 페이딩 채널에서 block type 파일럿 배치에 기반한 OFDM (Orthogonal Frequency Division Multiplexing) 시스템의 등화 기법을 다루고 있다. 수중 채널에서 얻을 수 있는 비트 속도는 셀룰러 폰이나 실내 무선 시스템과 같은 여타 통신 채널에 비해 상대적으로 낮은 편이며, 따라서 채널 추적시 도플러 효과가 중요한 파라미터가 된다. Coherent 복조 방식의 경우 도플러 주파수에 의한 잔여 평균위상에러는 시스템 성능에 치명적으로 작용할 수 있으며, 등화기만으로는 평균 도플러 쉬프트 효과에 대처하지 못할 수 있다. 공통 도플러 효과에 대처하기 위해 주파수 등화기와 더불어 위상에러 추적회로를 사용하여 회전 에러를 배제할 수 있다. 아울러 성능 저하를 최소화하는 수준에서 추적회로의 연산 부담을 줄일 수 있음을 시뮬레이션을 통해 증명하였다.

• 토지주택연구
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• 제11권3호
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• pp.1-9
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• 2020

This study fulfills an empirical analysis how the physical factors affect the formation of housing price with the block unit. Block unit houses are a type of housing that pursues comfort and convenience in that the characteristics of individual houses and apartment houses are mixed. Existing studies have focused only on the physical characteristics of various planning elements such as block-type residential complexes. Nevertheless, it is not known whether the physical characteristics of block-type residential complexes reflect the preferences of actual consumers. In addition, there are no sufficient studies on how to evaluate them from the market side. In this study, block-level detached housing sites the target complexes with 10 or more households built between 2002 and 2019. The target areas for analysis are 163 complexes in Paju, Namyangju, Goyang, Suwon, Yongin, Ansan, Gimpo, Incheon, Seongnam, Hwaseong and Gwangju, Gyeonggi-do. The physical elements that make up the unit housing were classified through factor analysis. Finally, regression analysis was conducted to establish the basis determining the price-forming factors. As a result of the analysis, the factors that influenced the price were the site area and the number of community facilities. The variable with negative influence was the distance from Seoul. Based on the results of this study, it can be said that the influence on price formation in various areas was confirmed by presenting the relationship between the facility composition and price of a detached house.

• 동의생리병리학회지
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• 제24권6호
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• pp.1105-1110
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• 2010

The purpose of this case study is to report the effect of oriental medical treatment on chronic tension-type headache. Despite the patient was treated by cervical nerve block for headache, headache was not improved. We diagnosed chronic tension-type headache according to ICHD-II(The International Classification of Headache Disorders) and Qi deficiency, dampness and phlegm by oriental differential diagnosis of symptom and signs. We applied herbal medicine, acupuncture, moxibustion and cupping therapy for hospitalization(7 days). Oriental medical treatment may have effective results in treating chronic tension-type headache that was not improved by cervical nerve block treatment. But this is a single case study, so further case-series research should be compiled.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2000년도 춘계학술대회논문집A
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• pp.714-719
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• 2000

In this paper, an application program is made to simulate the behavior of a ship block under various crane works and to generate data of lu9 reactions and wire tensions. The program is based on a CAD program, Pro/ENGINEER. A ship is composed of more than 100 ship blocks. In order to lift, move, turn, or put a ship block at a convenient location fur assembling, workers in a shipyard use cranes, wires, and lugs temporarily attached to the block. In the procedure of lifting and turning a ship block with a crane, it is important to find suitable lug points and wires to do the handling efficiently and prevent accidents. Evaluation of forces in lugs and wires is necessary, but the problem is rather complex due to nonlinearity and nonuniqueness. In the present development, the nonlinear system of equations for quasi-static equilibriums is derived and a Newton type solution method is adopted to solve the system. The importance of initial estimates to the solution is illustrated and two approaches are utilized and compared. With the program developed, users can assign lug points on the CAD model by mouse and choose various linking devices at each crane point. Users can try to simulate the motion for any prescribed conditions, compare the motion of the block and the reactions and choose appropriate lug points and the type of wires and lugs.

• 한국주거학회논문집
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• 제17권5호
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• pp.107-116
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• 2006

This study was to figure out the design characteristics of court housing type for the purpose of searching for the possibility of applying it to the housing design in Korea. In spite of changes of housing design condition in Korea, especially steep increase in density, there have been changes only in the height of housing block, not in the housing types, layout, spatial organization and other design properties. Due to such a situation, housing in Korea has been criticised as too high, monotonous one - especially types of housing block tend to be fixed into a slab block and a point block. As one of the alternatives to respond to the criticism, this study focused on the positive aspects of the court housing type, and suggested the design direction throughout the analysis of 8 entries in the design competition of EunPyeong New Town, which attempted to overcome the negative problems - mainly the daylighting, orientation, and privacy - and tried to maximize the positive properties of this type of housing.