• 대한치과보철학회지
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• 제25권1호
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• pp.269-279
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• 1987

The purpose of this study was to obtain basic data needed to clinical diagnosis and treatment by investigating the occlusal wear facets and those related factors. Sixty-six subjects, ranging from 24 to 26 years of age without symptoms of stomatognatic system, were selected from dental students in Chosun University. The area of occlusal wear facets was measured and twenty subjects were selected, and divided into two groups (Group I and Group II). The Group I had small facet areas, and the Group II had large facet areas. These two groups were investigated into right and left side wear facet areas, vertical overlaps, occlusion types of working side, masticatory muscle activities, and asymmetry of right and left side masticatory muscle function. The results were as follows: 1. The average wear facet areas of all subjects was $22.84{\pm}88.95mm^2$, and Group I and Group II were $96.12{\pm}32.00mm^2$ and $372.94{\pm}65.63mm^2$ respectively. 2. The right and left wear facet areas of Group I were $46.72{\pm}14.36mm^2$ and $49.40{\pm}21.46mm^2$ respectively. The right and left wear facet areas of Group II were $175.27{\pm}45.75mm^2$ and $185.69{\pm}45.37mm^2$ repsectively. 3. The vertical overlap of Group I and Group II was $3.88{\pm}0.81mm$ and $2.88{\pm}1.14mm $ respectively. 4. Most of the Group I had Canine protection occlusion (80%), and most of the Group II had Group function occlusion (80%). 5. The masticatory muscle activities at rest position, maximum bite, habitual chewing, right and left unilateral chewing were greater in Group II than in Group I, especially in the masseter muscle of working side at right and left unilateral chewing. (P<0.01). 6. The asymmetry of right and left wear facets and masticatory muscle activities were greater in Group II than in Group I. (P<0.01).

• 한방재활의학과학회지
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• 제33권1호
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• pp.13-29
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• 2023

Objectives To evaluate the evidence supporting the effectiveness of acupuncture for facet joint syndrome. Methods We conducted search across 9 electronic databases (PubMed, EMBASE, Cochrane CENTRAL (CENTRAL), KoreaMed, Kmbase, Koreanstudies Information Service System (KISS), ScienceOn, China National Knowledge Infrastructure (CNKI), and Wanfang) to find clinical trials that used acupuncture as treatment for facet joint syndrome. The methodological quality of randomized controlled clinical trials (RCTs) were assessed using the Cochrane Risk of Bias (RoB) tool, while non-randomized controlled clinical trials (nRCTs) were assessed using the Cochrane Risk of Bias Assessment tool for Non-randomized Study (RoBANS) tool. Results Nine RCTs and one nRCT met our inclusion criteria. Fire needle was more effective than medial branch block in terms of visual analogue scale (VAS) after 1 month (p=0.02). Also, Fire needle was more effective than Ibuprofen in terms of VAS and oswestry disability index (ODI) (p<0.05). However, in the rest of the study results, the intervention group did not show a statistically significant difference than the control group. Conclusions Although our review found encouraging but limited evidence of acupuncture for facet joint syndrome, most of the studies included in the analysis were evaluated as methodologically high risk of bias. From now on further well-designed RCTs should be encouraged.

• 디지털융복합연구
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• 제10권11호
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• pp.359-363
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• 2012

어휘 인식 모델에서는 정확하지 않은 어휘로 부터 특징을 추출하기 때문에 어휘가 실제 어휘와 유사한 어휘로 인식되거나 인식이 되지 않는 현상이 나타난다. 이를 위해 본 논문에서는 효율적인 형상 형성을 지원하는 시스템을 모델링하고 구현하였으며, 형상 형성 정보를 효율적으로 처리하고 어휘 유사율 관리를 최적화하기 위해 데이터베이스 검색에서 facet 방법을 응용하였다. 본 논문에서 제안한 시스템을 적용한 결과 시스템 성능에서 어휘 종속 인식률은 95.31%, 어휘 독립 인식률은 97.38%의 인식률을 나타내었다.

• 한국도서관정보학회지
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• 제48권4호
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• pp.375-399
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• 2017

본 연구는 국내 재난유관기관에서 개별적으로 생산 관리되고 있는 재난안전정보의 통합관리 및 공동활용을 위한 재난안전정보 분류체계(안)을 제시하는 것을 목적으로 한다. 이를 위해 재난 유관기관이기 보유한 분류체계에 대한 현황 분석 결과를 바탕으로 초안을 작성하였고, 재난 전문가와의 심층면담 및 문헌정보학 전문가의 검토를 통해 최종안을 수립하였다. 개발된 분류체계는 7개의 패싯으로 구성된 패싯 분류체계로서 재난안전정보의 복합적인 특성을 표현하고 재난관리업무를 지원하는데 효과적일 것이다.

• 기록학연구
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• 제76호
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• pp.119-157
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• 2023

본 연구는 기존의 대통령선물에 대한 메타데이터의 보완을 위하여 패싯검색기능을 제안하고자 하였다. 이를 위하여 대통령기록관이 온라인 서비스 중인 3,574건의 대통령선물을 바탕으로 대통령선물의 선물명, 증정인, 증정국가와 증정일 및 수령 경위, 규격, 특징에서 추출된 기록물의 특성을 파악하였다. 이를 기초로 5개의 기본 패싯과 51개의 하위패싯으로 대통령선물 패싯 기반의 분류를 설계하였으며 구조화된 패싯은 각 패싯 요소를 정의하고 배열 순서 및 기호를 부여하였다. 이러한 분류체계는 검색시스템에 적용하여 패싯네비게이션을 구축하는 기반으로의 활용을 기대할 수 있을 것이다. 연구를 통해 대통령선물에 대한 새로운 분류체계 개발이 필요하다는 점을 확인하였으며 이를 위한 대안적 의미의 분류체계로서 패싯 분류를 적용할 것을 제안하였다.

• 치과방사선
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• 제29권1호
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• pp.65-85
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• 1999

Objectives: To determine the effect of interpolation functions when processing the digital periapical images. Material and Methods: The digital images were obtained by Digora and CDR system on the dry skull and human subject. 3 oral radiologists evaluated the 3 portions of each processed image using 7 interpolation methods, and ROC curves were obtained by trapezoidal methods. Results: The heighest Az value(0.96) was obtained with cubic spline method and the lowest Az value(0.03) was obtained with facet model method in Digora system. The heighest Az value (0.79) was obtained with gray segment expansion method and the lowest Az value(0.07) was obtained with facet model method in CDR system. There was significant difference of Az value in original image between Digora and CDR system at a=0.05 level. There were significant differences of Az values between Digora and CDR images with cubic spline method, facet model method, linear interpolation method and non-linear interpolation method at α=0.1 level.

• 대한정형외과학회지
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• 제56권5호
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• pp.413-418
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• 2021

목적: 경추에서 후관절 비대칭성이 후관절 퇴행과 추간판 퇴행에 미치는 영향력에 대해 조사하고자 한다. 대상 및 방법: 2017년 1월부터 2018년 12월까지 총 100명의 환자를 대상으로 경추 제5-6번의 후관절 비대칭성을 후향적으로 분석하였다. 컴퓨터 단층촬영(computed tomography, CT)에서 수평면, 시상면, 관상면에 대한 양쪽 후관절 각도를 측정하였으며 자기공명영상 촬영(magnetic resonance imaging, MRI) 및 CT에서 후관절의 퇴행을 등급 체계를 이용하여 평가하였다. 추간판 퇴행은 MRI 시상면, 수평면에서 5등급으로 나누어 평가하였다. 좌우 후관절 각도 차이가 7도 이상인 경우를 비대칭군으로, 7도 미만인 경우를 대조군으로 구분하였다. 결과: 환자의 평균 나이는 비대칭군에서 55.44±12.3세(31-81세)였으며 대조군에서는 55.66±10.7세(32-76세)였다. 비대칭군의 경우 남성이 32명, 여성이 18명이었고 대조군에서는 남성이 24명, 여성이 26명이었다. 관절 퇴행은 비대칭군에서 24명(48.0%), 대조군에서 14명(28.0%)으로 측정되었으며 유의한 차이를 보였다(p=0.037). 추간판 퇴행은 비대칭군에서 29명(58.0%), 대조군에서 17명(34.0%)으로 측정되었으며 유의한 차이를 보였다(p=0.005). 다변량 분석 결과상 후관절 비대칭성이 후관절 퇴행과 추간판 퇴행에 영향을 주는 인자였다. 결론: 경추 제5-6번에서 경추 후관절 퇴행 및 추간판 퇴행이 유의하게 많이 발생하였으며 후관절 비대칭성이 후관절 퇴행 및 추간판 퇴행에 영향을 주는 인자로 생각된다.

• Asian Spine Journal
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• 제12권6호
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• pp.1010-1016
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• 2018

Study Design: Retrospective cohort study. Purpose: To report on spinal fusion assessment using computed tomography (CT) after adult spinal deformity (ASD) surgery using ultra-low dose recombinant human bone morphogenetic protein 2 (RhBMP-2). Overview of Literature: The reported dose of RhBMP-2 needed for successful spinal posterolateral fusion in ASD ranges from 10 to 20 mg per spinal level. This study reports the use of ultra-low dose of RhBMP-2 (0.07 mg per facet) to achieve spinal fusion in multilevel ASD surgery. Methods: Consecutive patients who underwent ASD surgery using ultra-low dose RhBMP-2 were recruited. Routine postoperative CT analysis for spinal fusion was performed by two spine surgeons. Inter-observer agreement was calculated for facet fusion (FF) and interbody fusion (IBF) at 6 and 12 months after the procedure. Results: Six consecutive ASD patients with a mean age of 62 years (28-72 years) were examined. Each patient received a total dose of 12 mg with an average dose of $0.69{\pm}0.2mg$ (0.42-1 mg) per single FF and $1.38{\pm}0.44mg$ (0.85-2 mg) for IBF. Total 131 FF and 15 IBF were examined in the study, with 88 FFs and nine IBFs being analyzed specifically at 6 months after the surgery. FF and IBF reported by surgeons A and B at 6 months were 97.7% vs. 91.9% FF, respectively (${\kappa}=0.95$) and 100% vs. 100% IBF, respectively (${\kappa}=1$). Two patients underwent longitudinal follow-up CT at 12 months, and the FF rates reported by surgeons A and B were 100% vs. 95.8%, respectively (${\kappa}=0.96$). Five out of nine facet (56%) non-unions were identified at the cross-links. The remaining four facet pseudarthrosis were noted at 1-2 spinal levels caudal to the cross-links. At the final clinical follow-up, there was no rod breakage, deformity progression, neurological deficit, or symptom recurrence. The Oswestry Disability Index improved by an average of $32.8{\pm}6.3$, while the mental component summary of the 36-item Short-Form Health Survey improved by an average of $4.7{\pm}2.1$, and physical component summary improved by an average of $10.5{\pm}2.1$. Conclusions: To our knowledge, this is the first study to report a CT that defined 92%-98% FF and 100% IBF using the lowest reported dose of RhBMP-2 in multilevel ASD surgery. The use of ultra-low dose RhBMP-2 reduces the RhBMP-2 related complications and healthcare costs.

• 한국군사과학기술학회지
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• 제12권4호
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• pp.500-507
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• 2009

This paper presents a novel method which can detect a target in IR image for active protection system. The target in IR image for the active protection system is small, moreover it moves with enormous speed. The proposed algorithm is comprised of robust clutter rejection methods and target optimized detection algorithms for small target, and an advanced method of selecting a final target position in target area, it can work in some milliseconds. The proposed algorithm provides the active protective system with more correct positions than those of radar, so that helps the active protection system can defense all threats with the utmost precision.

• Journal of Korean Neurosurgical Society
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• 제37권2호
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• pp.89-95
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• 2005

Objective: The biomechanical stabilities between the anterior plate fixation after anterior discectomy and fusion (ACDFP) and the posterior transpedicular fixation after ACDF(ACDFTP) have not been compared using human cadaver in bilateral cervical facet dislocation. The purpose of this study is to compare the stability of ACDFP, a posterior wiring procedure after ACDFP(ACDFPW), and ACDFTP for treatment of bilateral cervical facet dislocation. Methods: Ten human spines (C3-T1) were tested in the following sequence: the intact state, after ACDFP(Group 1), ACDFPW(Group 2), and ACDFTP(Group 3). Intervertebral motions were measured by a video-based motion capture system. The range of motion(ROM) and neutral zone(NZ) were compared for each loading mode to a maximum of 2.0Nm. Results: ROMs for Group 1 were below that of the intact spine in all loading modes, with statistical significance in flexion and extension, but NZs were decreased in flexion and extension and slightly increased in bending and axial rotation without significances. Group 2 produced additional stability in axial rotation of ROM and in flexion of NZ than Group 1 with significance. Group 3 provided better stability than Group 1 in bending and axial rotation, and better stability than Group 2 in bending of both ROM and NZ. There was no significant difference in extension modes for the three Groups. Conclusion: ACDFTP(Group 3) demonstrates the most effective stabilization followed by ACDFPW(Group 2), and ACDFP(Group 1). ACDFP provides sufficient strength in most loading modes, ACDFP can provide an effective stabilization for bilateral cervical facet dislocation with a brace.