Screws are the closest and most familiar mechanical elements of everyday life, and are generally used so widely that there is no machine without screws. Screws are used to make it easier to combine objects with objects, and are also used to transfer large forces from machines. The most influential factor in the coupling of these screws is the effective diameter. If the effective diameter is not accurate, the support cannot be finished or endured, leading to a major accident. The importance of these screws cannot be ignored, so in this study, the effective diameter was measured using the three-wire method, the screw micrometer method, and the projector method, and the one-way factor design method was applied to determine the exact method compared to the KS standard.

브라이언 프리엘의 『루나사에서 춤을』은 상상의 마을인 벨리백을 배경으로 성인 마이클의 관점에서 말해지는 기억극이다. 이 논문은 프리엘이 정체성, 종교, 젠더의 주제를 어떻게 도드라지게 하는지 그리고 제의적 사건으로서 춤이 갖는 수행성의 대두를 살펴보기 위해 극적 맥락에서 춤이 갖는 의미를 검토하고 있다. 논문은 춤으로 대표되어 나타는 몸에 대한 프리엘의 극적 재현을 아일 랜드 사회의 양가성과 집단적 고독의 제스처를 보여주는 문화적 퍼포먼스로 보고 인물들의 신체와 그 밖의 요소들이 만들어내는 것들이 어떻게 관객들에게 하나의 지각 가능한 사건으로 수용되는지를 가톨릭과 이교도 문제와 같은 아일랜드의 문화적 맥락과 연결하여 살펴본다. 결론적으로 본 논문은 자매들의 춤은 그 자체로서 어떤 것들을 말함과 동시에 행동으로 드러내어 보이는 것이며, 춤 을 추는 자신들과 그것을 보고 있는 사람들 모두가 다양한 방식을 통해 눈앞에 펼쳐진 ‘사건’을 강렬하게 경험하는 극적 퍼포먼스가 됨을 주장하고 있다.

The capacitive sensors can be divided into two categories depending on their performance and intended use. First, high resolution sensors are commonly used in displacement and position monitoring applications where high precision, high stability, and low temperature drift are required. Often these sensors are used in process monitoring and closed loop feedback control systems. Second, proximity capacitive sensors are much cheaper and generally used for sensing the presence of parts or for counting applications. The following paper describes characteristics of capacitive sensor and application to the PZT nano and ball screw stage.

본 연구의 목적은 두 가지이다. 첫 번째는 헨리 제임스의 소설 『나사의 회전』 속 유령이 가정 교사의 망상이라는 주장이 벤자민 브리튼의 오페라 《나사의 회전》에서 어디까지 유효한지 알아보는 것이다. 이를 위해 기존 연구와 분석을 재검토하고 이들이 어떻게 위의 주장을 뒷받침하는 근거 로 해석될 수 있는지 알아본다. 본고의 두 번째 목적은 첫 번째 작업을 통해 드러나는 새로운 해석, 요컨대 관객이 경험하는 오페라 전체가 가정교사의 망상일 가능성을 탐구하는 것이다. 오페라 전반 에 걸쳐 사용되는 음악이 가정교사의 주제에서 파생된다는 작업 가설을 제시하고, 해석과 분석의 상호연관성을 논의한다.

현존하는 가장 위대한 아일랜드 극작가인 브라이언 프리엘 비평의 대부 분은 그의 작품을 현대아일랜드의 역사/문화적 맥락에 굳게 위치시키고 그 맥락 아래 서 연구를 진행해왔다. 따라서 이들 프리엘 연구의 의도하지 않았던 결과 중 하나는 그의 작품들을 아일랜드 안에 가두고 지역화시킴으로써 현대희곡의 주변에 머무르게 했다는 점이다. 본 연구는 프리엘의 대표작 중 하나인 「루나사에서 춤을」을 아일랜드 로부터 탈맥락화시키고 브레히트, 테네시 윌리엄즈, 체호프 등의 작가들과 연계시켜 트랜스내셔녈한 관점에서 재조명하려는 시도이다.

Strength bar has merits in workability improvement, construction time shortening and connection details to be easy. But, lap splice length tends to be longer. In this study, high strength threaded bar will be reviewed whether it is appropriate in domestic standards by KCI concrete structural criteria and propose the mechanical splice.

Proximal femoral fractures are common in older adults. Zimmer natural nail (ZNN, Cephalomedulary Asia; Zimmer, Warsaw, IN, USA) known as useful in immobilizing the fractures of the proximal femoral fractures, have a critical complications like femoral head perforation and cut through in pelvic bone. We report a case that the femoral head perforation by the hip screw occured within 2 months of the operation, and 8 months after operation, the hip screw is completely separated from the metal body and cut through the pelvis.

During the intramedullary nailing procedure, surgeons feel difficulty in manipulation of the X-ray device to align it to axes of nailing holes and suffer from the large radiation exposure from the X-ray device. These problems are caused by the fact the surgeon cannot see the hole’s location directly and should use the X-ray device to find the hole’s location and direction. In this paper, we proposed the robotic guidance of the distal screwing using an optical tracking system. To track the location of the hole for the distal screwing, the reference marker is attached to the proximal end of an intramedullary nail. To guide the drill’s direction robustly, the 6-degree-of-freedom robotic arm is used. The robotic arm is controlled so as to align the drill guiding tool attached the robotic arm with the obtained the hole’s location. For the safety, the robot’s linear and angular velocities are restricted to the predefined values. The experimental results using the artificial bones showed that the position error and the orientation error were 0.91 mm and 1.64°, respectively. The proposed method is simple and easy to implement, thus it is expected to be adopted easily while reducing the radiation exposure significantly.

In the both overlap connection and connection with tapered threaded splices of seismic test results, the good agreement of seismic capacity are shown. Therefore the proposed tapered threaded splices can be applied to the RC structure to replace the overlap connection of rebar.

In the both loading test results and analytical results of specimens with tapered threaded splices, the good agreement of load-carrying capacity are shown. Therefore the proposed model for tapered threaded splices can be applied to the analysis of structure with tapered threaded splices.

The principle of treatment of type 2, 3 odontoid process fracture is controversial. The debate is in regard to which is effective between conservative treatment and surgery. We enrolled 41 patients with type 2, 3 odontoid process fracture from January 2007 to December 2011 at Chosun University Hospital. Patients in Group I (GI) received a halo vest and those in Group II (GII) underwent surgery by ant. screw fixation. The bone fusion was classified according to stable bone union, fibrous union, and unstable non-union. Patients in GI received halo vest for a mean period of 4.9 months and those in GII received a neck collar for a mean period of 3.8 months. Tweleve patients in GI and 17 patients in GII had stable bone union. Three patients in GI and two patients in GII had fibrous union. Five patients in GI and two patients in GII had non-union. The halo vest was a good conservative treatment for type 2, 3 odontoid process fracture : however, low bone fusion rate is a problem in particularly old age. However, ant. screw fixation is a better treatment in regard to short surgical time, short fusion time, and high bone fusion rate.

This study was performed to develop a reinforcing head method for steel pipe piles using screw type bending reinforcement, which can fix piles using nuts, and experimentally prove structural performances. In order to do so, steel pipe pile reinforcing head method test specimen using screw bending iron was produced and implemented to vertical tensile test, vertical compression test, and horizontal loading test. As a result, the test showed that it secured 1.28-3.62 times safety factors that are demanded from the design criteria for highway bridge.