• 대한치과의사협회지
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• 제38권6호통권373호
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• pp.549-557
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• 2000

ㆍPurpose: This study was performed to investigate the initial conservative treatment for TMD patients using careful counselling and medication prospectively. ㆍMaterials and Methods: Careful counselling and medication were performed in 51 TMD patients and 27 patients had follow-up check 2 months or more. Diagnosis of TMD was based on medical history and, physical and radiographic examination. TMD included masticatory disorder, internal derangement, degenerative joint disease, inflammatory joint disorder. and problems resulting from extrinsic trauma. All patients had chief complaints of TMJ pain, mouth-opening limitation. joint noise, and/or referred pain. We counselled and explained to the patient about the pathogenesis, etiologic factors, diagnosis and treatment plan for abut 10 minutes. We prescribed nonsteroidal anti-inflammatorv analgesic(Somalgen) and amitriptyline 10mg per day for 2 weeks. We informed the patient of the attention sheet and taught self-exercise of jaw. The patient were assessed by answering the questionnaire of subjective evaluation of TMD & maxillofacial pain. Questionnaire of an activity limitation. Questionnaire of a jaw function, and Questionnaire for the evaluation of TMD. ㆍResults: In questionnaire for the evaluation of TMD, 88.5% of 26 patients answered that the treatment was efficacious. 71.4% of 21 patients answered no problem in everyday life. There were significant differences between pretreatment and final follow-up in the evaluation of the subjective pain in the following sections: opening widely, chewing, resting, morning, masticatory muscle, and temporal portion(SAS program, paired T-test, P = 0.05). ㆍConclusions: Considerate counselling and proper medication could be significantly effectve in the initial treatment of TMD.

• Steel and Composite Structures
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• 제22권5호
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• pp.1019-1038
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• 2016

The use of high-strength concrete (HSC) in precast concrete segmental bridges (PCSBs) can minimize the superstructure geometry and reduce beam weight, which can accelerate the construction speed. Dry joints between the segments in PCSBs introduce discontinuity and require special attention in design and construction. Cracks in dry joints initiate more easily than those in epoxy joints in construction period or in service. Due to the higher rupture strength of HSC, the higher cracking resistance can be achieved. In this study, shear behavior of dry joints in PCSBs was investigated by experiments, especially focusing on cracking resistance and shear strength of HSC dry joints. It can be concluded that the use of HSC can improve the cracking resistance, shear strength, and ductility of monolithic, single-keyed and three-keyed specimens. The experimental results obtained from tests were compared with the AASHTO 2003 design provisions. The AASHTO 2003 provision underestimates the shear capacity of single-keyed dry joint C50 and C70 HSC specimens, underestimates the shear strength of three-keyed dry joint C70 HSC specimens, and overestimates the shear capacity of three-keyed dry joint C50 HSC specimens.

• 대한정형외과 초음파학회지
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• 제3권2호
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• pp.65-68
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• 2010

견봉쇄골 관절 낭종은 광범위 회전근개 파열, 가성 종양, 견관절 감염, 연골 석회증과 관련되어 소수만 보고 되고 있다. 저자들은 관절경적 회전근개 봉합술 후 재파열과 동반된 견봉 쇄골 관절 낭종의 증례를 경험하였으며, 환자가 회전근개파열 수술 후 견봉쇄골 관절의 돌출이나 종괴를 보일 때 임상의들은 회전근 개 치유 여부에 대한 추시 영상 검사를 고려해야 할 것으로 사료된다. 특히, 초음파 검사는 사용 간편성과 경제적 측면에서 우수하며, 접근성이 용이하다는 점에서 이런 추시 영상 검사에 추천된다.

• 기술사
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• 제42권5호
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• pp.32-36
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• 2009

This project located in IFEZ(Incheon Free Economic Zone) is the first central heating and cooling type for high-rise residential building in korea. The design was performed as the joint venture between Cosentini from U.S.A and wooowon, and our design concept was to save energy. LEED application from USGBC is going on in progress for the first residential building in korea. Careful attention was paid from schematic design for not a durability of structural and architectural, but also durability and safety of M.E.P.

• 한국지반공학회논문집
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• 제23권11호
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• pp.67-76
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• 2007

낙석에 영향을 주는 요소로는 기울기, 높이, 표면 거칠기 등의 비탈면 형태, 식생, 퇴적물질 등의 사면 구성재료 및 낙석 형상, 무게 등이 있다. 이들 영향요소 중 낙석의 크기 즉, 무게는 낙석시뮬레이션 결과에 큰 영향을 미침에도 불구하고 낙석무게에 대한 연구는 많이 이루어지고 있지 않다. 또한, 낙석의 크기는 현장의 절리간격에 의해서 영향을 많이 받으며, 현장의 발생 가능한 낙석무게분포는 절리간격을 이용하여 산정할 수 있다. 따라서 본 연구에서는 절리간격을 이용하는 체적절리개수(volumetric Joint count, $J_{\nu}$) 및 $RQD-J_{\nu}$ 관계를 이용하여 낙석무게분포를 산정하였으며, 이는 연구부지에 대한 직접적인 현장낙석 조사결과 및 기존 문헌자료를 이용하여 비교 검증을 수행하였다. 낙석무게 추정결과 분석방법에 따라서 유사한 결과를 보이는 것으로 분석되었으며, 200kg 이하는 $75.3{\sim}76.7%,\;200{\sim}400kg$은 $15.0{\sim}16.6%$, 400kg 이상은 $6.7{\sim}9.7%$의 분포를 보이는 것으로 나타났다. 또한, 현장의 낙석무게분포와 비교한 결과 유사한 분포를 보이는 것으로 나타났다. 따라서 본 연구에서 제시한 방법으로 산정한 낙석무게분포는 낙석시뮬레이션의 입력 자료로 사용할 수 있을 것으로 판단되며, 그 추정 결과를 본 현장사면의 낙석 검토시 사용할 경우 경제적인 검토결과를 보이는 것으로 나타났다.

• 대한족부족관절학회지
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• 제13권2호
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• pp.142-145
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• 2009

Purpose: The aim of this study was to retrospectively evaluate the clinical and radiological results of the first metatarsophalangeal joint arthrodesis with two crossed screws fixation. Materials and Methods: We treated 23 patients (24 cases) with arthrodesis of the first metatarsophalangeal joint using two crossed screws fixation between December 2000 and May 2005. There were 3 male patients and 20 female patients. Ages ranged from 28 to 74 years (mean, 50 years). Follow-up ranged from 4.1 to 8.2 years (mean, 6.5 years). The American Orthopaedic Foot and Ankle Society (AOFAS) score and their satisfaction was evaluated clinically, foot anteroposterior and lateral radiograph, radiologically. Results: Of the 24 cases, 6 had surgery for dorsal plate and screws fixation because of failure to acquire firm fixation with two crossed screws fixation. All 6 cases acquired bony union. Fusion of the hallux first metatarsophalangeal joint occurred in 16/18 cases (89%). Nonunion occurred in 2 cases (11%) and was asymptomatic. At last follow-up, hallux valgus angle ranged from 11 to 25 degrees(mean, 17.7 degrees), dorsiflexion ranged from 15 to 25 degrees (mean, 22 degrees).The mean preoperative AOFAS score of 37 points(range, 28 to 45 points) improved to a mean of 77 points (range, 65~90 points) postoperatively. The result of the procedure as rated subjectively by the patient was excellent for 5 cases, good for 11 cases and fair for 2. Conclusion: Comparatively, the arthrodesis of the first metatarsophalangeal joint with crossed screws fixation showed a satisfactory clinical results, we thought that require technical attention for firm fixation in operation.

• Earthquakes and Structures
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• 제12권2호
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• pp.237-250
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• 2017

There has been increasing attention in many countries on seismic retrofit of old fashioned RC structures in recent years. In such buildings, the joints lack transverse reinforcement and suffer inadequate seismic dimensional requirements and the reinforcement is plain bar. The behavior of the joints is governed by sliding of steel bars and diagonal shear failure is less influential. Different methods to retrofit beam-column joints have been proposed in the literature such as wrapping the joint by FRP sheets, enlargement of the beam-column joint, and strengthening the joint by steel sheets. In this study, an enlargement technique that uses external prestressed cross ties with steel angles is examined. The technique has already been used for substructures reinforced by deformed bars and has advantages such as efficient enhancement of seismic capacity and lack of damage to the joint. Three reference specimens and two retrofitted units are tested under increasing lateral cyclic load in combination with two levels of axial load. The reference specimens showed relatively low shear strength of 0.150${\surd}$($f_c$) and 0.30${\surd}$($f_c$) for the exterior and interior joints, respectively. In addition, relatively brittle behavior was observed and large deformations extended into the panel zone of the joints. The retrofit method has increased ductility ratio of the interior beam-column joints by 63%, and energy dissipation capacity by 77%, relative to the control specimen; For external joints, these values were 11%, and 94%. The retrofit method has successfully relocated the plastic joints far from the column face. The retrofit method has improved shear strength of the joints by less than 10%.

• 정보화연구
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• 제11권1호
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• pp.11-23
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• 2014

킬체인(Kill Chain)이 최근에 북한의 핵실험, 미사일 발사 등으로 인해 주목을 받고 있으며, 조기 구축의 필요성이 대두되고 있다. 킬체인 구축을 구체화하기 위하여 센서와 타격무기가 효과적으로 작전을 지원할 수 있도록 한국형 킬체인 네트워크에 대하여 검토해야 한다. 특히, 산악지역 및 해양을 포함한 짧은 종심의 합동전장 환경에서 적 위협으로부터 공격 대응시간을 단축할 수 있는 적합한 표적정보 전달 네트워크가 필요하다. 현재 작전에서는 다양한 유 무선 통신체계를 이용하여 음성, 데이터, 이미지, 문자 등을 작전에 활용하고 있다. 그러므로 본 논문은 킬체인에서 적용될 수 있는 표적정보 전달 네트워크에 대하여 분석하는 것이다. 그리고 네트워크의 정책적 대안에 대한 확증을 위해 AHP(Analytic Hierarchy Process) 기법을 적용하여 킬체인에 적합한 표적정보 전달 네트워크를 식별하였다. 이를 통해 합동 전장 환경하에서 적용 가능한 킬체인 표적정보 전달 네트워크 및 구축방안을 제시하였다.

• 한국산학기술학회논문지
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• 제16권6호
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• pp.3926-3933
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• 2015

본 연구는 관절 수술을 받은 정형외과 환자에서 섬망의 이환 기간에 영향을 미치는 요인을 알아보고자 하였다. 대상자는 2012년 1월 에서 2014년 2월 사이에 일개 대학병원 정형외과에서 관절 수술 후 섬망 증상을 보인 환자 266명으로 하였으며, 섬망의 이환 기간에 따라 2일 이내의 짧은 기간 섬망을 가진 군(129명, 48%)과 3일 이상 장기간 섬망을 가진 군(137명, 52%)으로 나누었다. 뇌졸중과 치매는 짧은 기간 섬망을 가진 군에 비해 장기간 섬망을 가진 군에서 높은 비율을 보였으며, 다중회귀분석에서도 뇌졸중과 치매는 섬망의 장기간의 이환과 연관되어 있었다. 따라서 뇌졸중과 치매를 가진 환자들에서 관절 수술이 시행되는 경우에는 섬망의 예방과 관리에 더욱 주의를 기울여야 한다.

• Korean Journal of Acupuncture
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• 제38권4호
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• pp.317-323
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• 2021

The purpose of this study is to report a case diagnosed with cellulitis and ankle joint synovitis after acupuncture treatment. An 85-years old female suffering from low back pain was managed by acupuncture including BL60. After treatment, unintended ankle pain occurred. The pain was diagnosed with cellulitis and synovitis by MRI. The patient was transferred to the Western medical hospital, and ankle joint arthroscopic synovectomy was performed. It was difficult to find a clear relationship between acupuncture and ankle joint synovitis. But it would be reasonable to assume that cellulitis was associated with acupuncture needling and synovitis was followed. Serious adverse effects, such as septic arthritis, are rare, but need significant attention. For acupuncture treatment on the ankle, especially using BL60, the depth and manipulation should be carefully performed along with sterilization.