• 인터넷정보학회논문지
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• 제7권4호
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• pp.91-99
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• 2006

점진적 파싱 기법은 프로그램의 점진적 구성을 허용하는 언어기반 환경의 중요한 부분이며, 프로그램의 변경된 부분에 대해서만 구문분석을 다시 함으로써 시스템의 성능을 향상 시킨다. 기존의 점진적 파싱은 파싱 정보를 저장하기 위해 스택 자료구조를 사용한다. 본 논문에서는 스택 자료구조를 사용하지 않고 노드 주소로 스레드를 추가하여 스레드 트리 구성 알고리즘을 제안한다. 또한 구성된 스레드 트리를 사용하여 5단계의 점진적 파싱 과정으로 나누어 점진적 스레드 트리 구성 알고리즘을 제안한다.

• Archives of Plastic Surgery
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• 제36권2호
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• pp.221-224
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• 2009

Purpose: The treatment of children mandibular condyle fracture that is severely displaced is controversial. The conservative treatment of it may lead to complications - mandibular deficiency, asymmetry, malocclusion and temporomandibular joint dysfunction. Moreover, open reduction carries risks for growth retardation, facial nerve injury, scarring and joint stiffness. The aim of this article is to present an alternative technique of the treatment by using a threaded Kirschner wire and external rubber traction. Materials: From November 2005 to May 2008, three patients underwent the management by using a threaded Kirschner wire and external rubber traction. A threaded Kirschner wire was inserted in the condylar segment by using a C-arm. We applied the external rubber traction, and we reducted the segment progressively until complete reduction. The mandibular - maxillary fixations were removed after 3 weeks, and patients went into training for mouth opening. Results: The technique didn't result in complications - joint dysfunction, facial nerve injury, sore, infection and nonunion during follow - up period. Radiologic follow - up examinations revealed correct reduction in all patients. In all cases, we found restoration of preinjury occlusion and temporomandibular joint function. Conclusions: Closed reduction of children mandibular condyle fracture by using a threaded Kirschner wire and external rubber traction did achieve anatomic reduction and restore mandibular height. This alternative technique is simple, effective, inexpensive, easy to apply and minimally invasive.

• 소성∙가공
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• 제28권3호
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• pp.145-153
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• 2019

The objective of this study is to analyze the mechanical splicing characteristic of the threaded bar according to the contact conditions of the transverse rib. In order to consider the contact conditions of the rib, selection of the main variables including the gap of the core diameter ($l_c$), rib angle (${\theta}$), and the number of contacts ($C_N$) of transverse rib was done. So as to analyze the splicing characteristic of the D51 threaded bar, a finite element (FE) simulation of the tensile test was conducted using the designed D51 threaded bar and coupler. Through FE simulation results, it was verified that the mechanical slicing characteristics varied based on the main design variables ($l_c$, ${\theta}$, and $C_N$). It was further confirmed that it was important to determine the $C_N$ in consideration of $l_c$. Additionally, the tensile test results of the D25 and D51 threaded bar combined with the couplers were similar to FE simulation results. Furthermore, to quantitatively evaluate FE simulation and test results, the calculation equation for the contacted projection area ratio (R) of the transverse rib was proposed. To secure a mechanical splicing joint of the threaded bar, it was established that the R calculated using the proposed equation had to be greater or equal to 40%.

• 인터넷정보학회논문지
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• 제5권5호
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• pp.119-127
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• 2004

언어 기반 프로그래밍 환경의 발전에 따라 점진적 파싱에 대한 연구는 핵심적인 분야가 되었다. 본 논문의 목적은 파싱 속도(lime)와 기억장소가 많이 요구하는 기존의 알고리즘들보다 효율적인 점진적 파싱 알고리즘을 제시하는데 있다. 본 논문에서는 스택을 이용하지 않는 스레드 트리 구성 알고리즘을 제안하였다. 또한 노드의 재파싱 과정을 없애기 위해 스택을 이용하지 않는 노드 생성 알고리즘과 점진적 스레드 트리 구성 알고리즘을 제안하였다.

• 융합보안논문지
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• 제5권4호
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• pp.19-25
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• 2005

스레드 트리란 LR 파싱표를 사용하여 파스 트리인 동시에 파스 스택을 표현 할 수 있는 자료구조이다. $Larchev\^{e}que$는 스택을 사용하여 스레드 트리들 구성하고 점진적 파싱을 한다. 본 논문에서는 재 파싱 노드와 파싱속도를 줄이기 위해 스택을 사용하지 않는 변화된 스레드 트리를 구성하는 알고리즘을 제안한다. 또한 노드의 재 파싱 과정을 없애기 위해 변화된 스레드 트리와 LR 파싱표를 사용하는 점진적 파싱 알고리즘을 제안한다.

• 한국컴퓨터정보학회논문지
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• 제22권11호
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• pp.1-7
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• 2017

In this paper, we introduce three monitoring filtering techniques which reduce the overheads of dynamic data race detection. It is well known that detecting data races dynamically in multi-threaded programs is quite hard and troublesome task, because the dynamic detection techniques need to monitor all execution of a multi-threaded program and to analyse every conflicting memory and thread operations in the program. Thus, the main drawback of the dynamic analysis for detecting data races is the heavy additional time and space overheads for running the program. For the practicality, we also empirically compare the efficiency of three monitoring filtering techniques. The results using OpenMP benchmarks show that the filtering techniques are practical for dynamic data race detection, since they reduce the average runtime overhead to under 10% of that of the pure detection.

• 대한치과의사협회지
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• 제37권12호통권367호
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• pp.999-1005
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• 1999

• Journal of the Korean Wood Science and Technology
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• 제39권1호
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• pp.53-59
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• 2011

시험 시편은 1개의 횡목과 2개의 종목이 직결나사못 2개로 연결된 접합부(Type-A)와 2개의 횡목과 2개의 종목이 4개의 직결나사못으로 연결된 접합부(Type-B)를 제작하였다. Type-B를 보강하기 위하여 횡목간의 연결부를 끝면거리 5D로 반턱이음하여 2개의 직결나사를 사용한 접합부(Type-C), 끝면거리 10D로 반턱이음한 접합부(Type-C1)와 끝면거리 10D, 직결나사 3개를 사용한 접합부(Type-C2)를 제작하였다. 압축형 전단 내력 시험결과 Type-B의 내력을 기준으로 Type-B를 보완한 Type-C는 약 30% 감소하였고, Type-C에서 끝면거리를 증가시킨 Type-C1은 Type-B와 비슷한 내력을 보였으며, Type-C1에서 직결나사못의 개수를 3개로 증가시킨 Type-C2는 Type-C1과 비교하여 1.28배 내력을 나타냈다. 기존 정각재를 이용한 옹벽의 접합부 중 긴 횡목과 짧은 횡목이 2개의 종목과 연결되는 접합부는 내력이 저하되기 때문에 이를 대체하기 위하여 실험을 실시하였다. 따라서 Type-B를 Type-C2로 대체한다면 옹벽 시공시 직결나사못에 의한 목재의 할렬, 파단과 시공시간이 줄어들고 접합 내력이 증가할 것으로 기대된다.

• 대한의용생체공학회:의공학회지
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• 제39권3호
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• pp.134-139
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• 2018

One of the most common problems with pedicle screw system is pullout of the screw. This study was performed to evaluate the pullout strength and driving torque of newly designed pedicle screws. The design of three type screws were standard pedicle screw, which had single lead threaded and single pitched design (Type A), single pitched and dual lead threaded pedicle screw (Type B), dual pitched and dual lead threaded pedicle screw (Type C), respectively. The tests were performed in accordance with the ASTM standards using polyurethane (PU) foam blocks. There was no significant difference in pullout strength among three types of screw. Type B and Type C exhibited higher insertion torque and removal torque than Type A, respectively (p<0.05). Pedicle screws newly developed with dual pitched and dual lead threaded design showed higher driving torque without decrease in pullout strength compared to the standard pedicle screw and could be inserted more rapidly with the same number of revolutions.

• Earthquakes and Structures
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• 제15권2호
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• pp.165-178
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• 2018

The aim of this study is to investigate the efficiency of using threaded rods and steel profiles to produce a steel confining system for rehabilitation of damaged concrete corbels for the first time in literature. Some of the specimens were repaired by crack repair epoxy before being confined for further enhancement. A total of 19 two sided damaged corbels were used in the study with different mechanical properties and parameters but similar dimensions. The differences were in rehabilitation style, shear span, fiber percentage, reinforcement steel diameter, and concrete strength. The rehabilitated specimens were loaded with vertical load until failure. Four different configurations were used in the investigation. Test results show that the proposed rehabilitation technique is effective to enhance the load capacity of the corbels and to improve their ductility. Moreover, new formulations were proposed to calculate the load capacity of the rehabilitated corbels. A good fit was observed between numerical and experimental results.