• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제39권3호
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• pp.120-126
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• 2013

Objectives: This study sought to elucidate the effect of autogenous tooth bone material by experimenting on minipig's maxillary sinus and performing histological and histomorphometric analyses. Materials and Methods: Five 18-24 month-old male minipigs were selected, and right maxillary sinuses were grafted with bone graft material made of their respective autogenous teeth extracted eight weeks earlier. The left sides were grafted with synthetic hydroxyapatite as control groups. All minipigs were sacrificed at 12 weeks after bone graft, which was known to be 1 sigma (${\sigma}$) period for pigs. Specimens were evaluated histologically under a light microscope after haematoxylin-eosin staining followed by semi-quantitative study via histomorphometric analysis. The ratio of new bone to total area was evaluated using digital software for calculation of area. Results: All specimens were available, except one on the right side (experimental group), which was missing during specimen preparation. This study demonstrated new bone at the periphery of the existing bone in both groups, showing evidence of bone remodeling, however, encroachment of new bone on the central part of the graft at the 1 ${\sigma}$ period was observed only in the autogenous tooth bone group (experimental group). Histomorphometric analysis showed more new bone formation in the experimental group compared to the control group. Although the difference was not statistically significant (P>0.05), the mean percentage area for new bone for the experimental and control groups were $57.19%{\pm}11.16%$ and $34.07%{\pm}13.09%$, respectively. Conclusion: The novel bone graft material using autogenous tooth is a good alternative to autogenous bone, comparable to autogenous bone, and outperforming synthetic hydroxyapatite bone graft materials in terms of bone regeneration capacity. Augmentation with autogenous tooth bone materials will reduce donor site morbidity without hampering the safety of the autogenous bone graft.

• 정보처리학회논문지:컴퓨터 및 통신 시스템
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• 제2권1호
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• pp.43-50
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• 2013

파일 식별과 분석은 컴퓨터 포렌식 수사과정에서 디지털증거 획득 및 증거분석에 중요한 요소이며 지금까지 많은 연구가 진행되었다. 그러나 실행파일의 식별과 분석은 주로 악성코드에 대해 연구되어 왔기 때문에, 저작권침해 사고와 같은 일반적인 실행파일을 세부적으로 분류하고 탐지해야 할 경우에는 기존의 악성코드 분류 방법은 적용되기 어렵다. 따라서, 본 논문에서는 실행파일 헤더내 문서화되지 않은 정보의 유사도 측정에 근거한 비교를 통해 실행파일을 세부적으로 분류할 수 있는 방법을 제시한다. 제안한 방법은 실행파일의 헤더에 포함된 정보를 이용하기 때문에 일반적인 실행파일뿐만 아니라 기존의 악성코드 및 새로운 악성코드와 변종 그리고 실행압축, 코드변형, 가상화 및 난독화된 실행파일 분류에도 활용이 가능하다.

• Archives of Plastic Surgery
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• 제47권3호
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• pp.242-249
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• 2020

Background The Exoscope is a novel high-definition digital camera system. There is limited evidence signifying the use of exoscopic devices in microsurgery. This trial objectively assesses the effects of the use of the Exoscope as an alternative to the standard operating microscope (OM) on the performance of experts in a simulated microvascular anastomosis. Methods Modus V Exoscope and OM were used by expert microsurgeons to perform standardized tasks. Hand-motion analyzer measured the total pathlength (TP), total movements (TM), total time (TT), and quality of end-product anastomosis. A clinical margin of TT was performed to prove non-inferiority. An expert performed consecutive microvascular anastomoses to provide the exoscopic learning curve until reached plateau in TT. Results Ten micro sutures and 10 anastomoses were performed. Analysis demonstrated statistically significant differences in performing micro sutures for TP, TM, and TT. There was statistical significance in TM and TT, however, marginal non-significant difference in TP regarding microvascular anastomoses performance. The intimal suture line analysis demonstrated no statistically significant differences. Non-inferiority results based on clinical inferiority margin (Δ) of TT=10 minutes demonstrated an absolute difference of 0.07 minutes between OM and Exoscope cohorts. A 51%, 58%, and 46% improvement or reduction was achieved in TT, TM, TP, respectively, during the exoscopic microvascular anastomosis learning curve. Conclusions This study demonstrated that experts' Exoscope anastomoses appear non-inferior to the OM anastomoses. Exoscopic microvascular anastomosis was more time consuming but end-product (patency) in not clinically inferior. Experts' "warm-up" learning curve is steep but swift and may prove to reach clinical equality.

• 한국통신학회논문지
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• 제33권6C호
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• pp.512-519
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• 2008

범죄에 사용된 휴대폰의 증거는 수사와 법정판단의 중요한 자료가 된다. 다양한 휴대폰의 종류와 모델, 통일되지 않은 파일 포맷을 사용하여 범죄 증거를 수집하고 분석하는 과정에 많은 어려움이 있다. 또한 압수 수사현장에서 휴대폰에 대한 압수수색 과정에서부터 포렌식 자료의 무결성 추출까지의 절차상 표준화가 되어 있지 않아, 법정에서 채택할 수 없게 된다. 본 논문에서는 휴대폰의 압수 수색 절차를 표준화한다. 표준 절차에 의한 범죄 현장에서 휴대폰 압수 수색 자료의 무결성을 확보 하기위한 전파차단봉투와 이동용 전파차단장치를 사용한다. 압수된 휴대폰의 증거 자료를 분석하고, 무결성 제손 실험을 통해 무결성을 검증하고, 휴대폰 압수수색 절차에 대한 문제점 및 대책을 제시함으로 모바일 포렌식의 발전에 기여하고자 한다.

• 한국임상수의학회지
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• 제26권6호
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• pp.632-636
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• 2009

회음부 팽대 병력을 보이는 세 마리 개가 건국대학교 부속 동물병원과 한강 동물병원에 내원하였다. 회음부 팽대 외에 다른 증상이 없었으며 신체 검사에서 두 마리는 환납성 한 마리는 비 환납성임을 확인 하였다. 일반 방사선 사진에서 골반강 또는 복강 내 장기가 탈장 낭 내에 없음을 확인하였다. 회음 탈장의 교정을 위해 내폐쇄근 변위 탈장 봉합술 실시 하였다. 한 마리에서 수술 후 지방을 함유하고 있는 대측 탈장이 확인되었다. 수술 후 정기 점진은 수의사의 신체 검사 혹은 보호자와의 전화 통화를 통해 실시 되었으며 세 마리 모두에서 수술과 관련한 좌골 신경 손상, 직장 탈출, 수술 부위 열개, 회음 탈장 재발과 같은 합병 증상이 없음을 확인하였다.

• 한국임상수의학회지
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• 제27권5호
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• pp.584-587
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• 2010

체중 1.8 kg 5년령 중성화 수컷 치와와 개가 오른쪽 회음부 팽대 평가를 위해 건국대학교 부속 동물병원에 내원하였다. 회음부 팽대 외에 다른 증상이 없었으며 신체 검사에서 환납성 회음탈장임을 확인 하였다. 회음 탈장 교정을 위해 수정 된 전통 탈장 봉합술과 수정 된 내폐쇄근 변위 탈장 봉합술을 동시에 실시 하였다. 수술 한달 후 보호자가 왼쪽 회음부 팽대를 보고하였고 수의사의 신체검사에서 왼쪽 회음탈장이 확인 되었다. 수술 중 좌골, 등쪽, 뒤쪽 회음탈장의 동시 발생이 관찰 되었으며 회음 탈장 교정을 위해 위와 동일한 탈장 봉합술을 실시하였다. 정기 점진은 수의사의 신체 검사 혹은 보호자와의 전화 통화를 통해 실시 되었으며 양측 수술 부위에서 수술과 관련한 합병 증상이 없음을 확인하였다.

• Restorative Dentistry and Endodontics
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• 제12권1호
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• pp.155-163
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• 1986

The purpose of this study was to measure penetration of dye stuff (2% Methylene blue, 2% Hematoxylin, 2% crystal violet and 2% safranin-O) on unfilled resin (Lang Dental MFG Co.) Hipol (Boopyung Dental Chemical Co. Macrocomposite resin) Durafill (Kulzer, Co. Microfilled Composite resin) and Heliosit (Vivadent Co. Microfilled Composite resin) The unfilled resin with dough stage was inserted into plastic tuble (5mm in diameter and 4mm in height) with condensation force of 1000 gr, 2000 gr and without condensation force. Hipol mixed on the mixed pad was inserted into the plastic tube by the same method as the unfilled resin. The microfilled resins which were Durafill and Heliosit were polymerized for 60 seconds with the visible light on each surface of the plastic tube which was upper and lower, under condensation force of 1000 gr, 2000 gr and without condensation force. All specimens were stored in the air for 24 hours, then specimens were immersed in the various kind of dye solution for different period of time (1 hour and 24 hours). These dye-treated specimens were polished horizontally until removing 0.5mm of each surface on the emery paper (#1000), and the dye penetration in the polished surface was measured under the digital microscope (Japan Fosuh). Following results were obtained 1. The penetration of dyes was the most excessive in Durafill and was not influenced on the condensation force and the period of immersion time. 2. All dyes were penetrated into Hipol, and Crystal violet was penetrated most excessively in all dyes. 3. The penetration of dye in all resins was not influenced by the period of immersion time and condensation force. 4. There was no evidence of dye penetration in unfilled resin.

• Journal of Korean Biological Nursing Science
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• 제17권2호
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• pp.140-149
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• 2015

Purpose: Bell's palsy is a nerve paralysis disease that causes functional impairments and affects psychological and aesthetical parts. This study aimed to examine whether acupressure massage had positive effects on facial paralysis, subjective symptoms, and depression in Bell's palsy patients. Methods: This study was conducted by a nonequivalent control group pretest-posttest design. Participants were 60 patients with Bell's palsy. 30 patients were assigned to the experimental group and the remaining 30 patients were assigned to the control group. The period of the study was from October 1, 2008 to July 30, 2009. Acupressure massage was offered to the experimental group for 20 minutes per day for two weeks (a total of six times). A SPSS/Win 12.0 program was used for data analysis. Results: A difference in Digital Infrared Thermographic Imaging (DITI) between affected and unaffected sides was less in the experimental group having acupressure massage than in the control group and the score of the recovery of facial paralysis was also increased in the experimental group. The Facial Nerve Grade Systems by Brackmann score that is a more objective index showed a significant difference between two groups (F=26.81, p<.001). Subjective symptom and depression scores were more decreased in the acupressure massage group than in the control group. Conclusion: Based on the results, it is considered that acupressure massage can be applied to Bell's palsy patients as an alternative therapy. It can be used as an evidence-based East-West nursing intervention to improve patients' physical and mental functions.

• 한국비블리아학회지
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• 제29권1호
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• pp.47-72
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• 2018

디지털 시대에서 기록의 품질 확보는 기록자산으로서의 가치를 결정하는 중요한 요소이다. 기록의 품질은 주로 IT 시스템을 이용하는 모든 기록의 생산과 활용 과정에서 기록 요건을 얼마나 일관성 있게 적용할 수 있는가에 달려 있다. 그러므로 조직의 전체 영역에 적용할 수 있는 효과적인 기록관리 거버넌스의 중요성이 더욱 부각되고 있다. 본 논문의 목적은 보다 가치 있는 기록을 산출하고 관리하기 위해 기록관리 거버넌스의 새로운 틀을 제시하고 이를 실행에 옮길 수 있는 방안을 제시하고자 함이다. 이를 위해 기록의 증거적 가치와 정보적 가치를 고려하여 기록의 생산, 유통, 활용, 저장, 보호 등 프로세스 전반에 대한 일관된 정책과 절차를 수립하고 운영하는 거버넌스 체계의 필요성을 제시하고, 2010년대에 제시된 정보 거버넌스 모델인 IGRM과 기록경영시스템 MSR 표준을 통합하여 실제 조직에 적용할 수 있는 기록관리 거버넌스 통합모델을 제안하였다.

• 대한인간공학회지
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• 제30권1호
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• pp.187-193
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• 2011

Objective: The aim of this study was to investigate the association between conceptual metaphors of affect and physical dimensions. Background: The evidence that affect is unconsciously linked to physical dimensions(e.g., position and color) has been obtained in western cultures. However, in eastern cultures, especially, in Korea, it has been seldom tested. It is indispensable to examine whether or not cultural differences exist for better understanding of the conceptual metaphors. Method: 50 positive and 50 negative words were adopted from previous studies in order to determine the relationship between physical domains and abstract affect. Three hypotheses were tested in this study: (1) Good is up. (2) Good is bright. (3) Good is right(for right-handers). The automatic association between valence(positive vs. negative) and vertical position (up vs. down) was investigated in experiment 1, in which 100 words were randomly presented on either the top or the bottom of a LCD screen and the evaluation time of the presented word was recorded. The unconscious association between valence and color(white and black) was examined in experiment 2, where each word was randomly presented in either white or black. Lastly, we tested whether right-handers tend to associate rightward space with positive ideas and leftward space with negative ideas. Results: Reaction time was faster when words were presented in metaphor congruent domains(e.g., 'positive words on the top, in bright color, and on right space vs. negative words on the bottom, in dark color, and on left region) than when they were shown in metaphor incongruent domains. Conclusion: The results might give the groundwork for various directions in further understanding perception, emotion, and behavior. Application: This study may provide useful points to GUI designers and service developers if further studies enhanced in validity and reliability are followed.