저출력레이저조사가 배양섬유아세포의 생존력에 끼치는 영향에 관한 실험적 연구

양근영,한경수,신민 원광대학교 치의학연구소 1993 圓光齒醫學 Vol.3 No.1

This study was performed to investigate the effects of infrared and visible light laser irradiation on cell viability of human gingival fibroblast. For the present study, the author used cultured fibroblast originated from sound gingiva which were fifth or sixth passage. Laser machine utilized here were stomalaser which irradiate infrared(GaAs diode) and red(HeNe) laser in turn with pulse wave pattern or continuous wave pattern, and the machine had several frequency mode presented by regeneration, relaxation and analgesic modalities. Cultured fibroblast samples were divided by this modalities or cell counts and laser exposure time which were 60 seconds or 150 seconds, respectively. 1 day after laser irradiation, each cell-well was treated with MTT and measured optical density with ELISA. The obtained results were as follows 1. There was a tendency of increasing optical density in proportion to irradiation time in groups of 1×10^4 cell per well but in groups of 5×10^3 cell per well, reverse phenomena were observed. 2. The difference of optical density according to frequency modalities were not showed significantly except several cases in groups of 5×10^3 cell per well. 3. In general. cell viability of cultured human gingival fibroblast were not showed consistent feature by low level laser irradiation.

탈질공정에 적합한 대체탄소원 적용에 관한 연구

양근영,이재호,전장곤,황석환 대한환경공학회 2006 대한환경공학회 학술발표논문집 Vol.2006 No.12

영상 분할에서의 도메인 적응 기술을 위한 스타일 변환 기반의 컨텐츠화 기법

양근영,안우진,임묘택,최현덕,강태구 제어로봇시스템학회 2022 제어로봇시스템학회 국내학술대회 논문집 Vol.2022 No.6

해설 : 응용광물학의 과거와 현재

양근영 한국광물학회 2005 광물과산업 Vol.18 No.2

머리자세와 이악물기 정도에 따른 교근 및 전측두근의 근활성과 교합력에 대한 연구

양근영,한경수,여인식 대한안면통증∙구강내과학회 2003 Journal of Oral Medicine and Pain Vol.28 No.2

머리자세와 이악물기 정도에 따른 교근 및 전측두근의 근활성과 교합력에 대한 연구

양근영,한경수 원광대학교 치의학연구소 2003 圓光齒醫學 Vol.12 No.3

This study was performed to investigate the electromyographic(EMG) activity and bite force according to change of head posture and clenching level. Twenty four male dental students were selected for the study. They were healthy and had no known masticatory problems. To reduce the subjects' fear of dental damage and to deliver the bite force to several teeth on hard biting of the metallic sensory element of the bite force recorder, acrylic full arch wafers were adapted on both of dental arches. Surface EMG electrodes were placed over the right and the left anterior and the superficial masseter muscles. Subjects were asked to sit upright with relaxed habitual or natural head posture, and to keep their eyes open. The sensory element was located on the molar area and subjects were asked to bite as strong as possible. Measurements of the EMG activity and bite force were simultaneously carried out in the three head postures, natural, 45° upward, and 30° downward, and in the two clenching levels, maximum and 70% EMG activity of maximum voluntary contraction, and in each side of the dental arch, respectively. Data were recorded and processed with SPSS windows(ver. 10.0) and the results obtained were as follows: 1. Only height among the parameters related to physical constitution showed significantly positive correlation with the bite force in almost all measurements. 2. There were no significant change of the EMG activity in both of the masticatory muscles, and also no change of the difference of EMG activity between the two masticatory muscles of same side according to change of head posture. 3. The bite force in both of the clenching levels did not show any significant difference according to head posture. 4. In general, the EMG activity of the anterior temporalis muscle was more correlated with the bite force than that of the masseter muscle. However, the correlation between the bite force and the EMG activity of the anterior temporalis allowed differentiation by clenching level: the bite force on maximum clenching was comlated with the EMG activity in 45° upward head posture whereas the bite farce on 70% ENG activity of maximum clenching was correlated with the EMG activity in natural, and in 30° downward head posture, respectively.

도시 철도역의 효과적인 안내사인 전달을 위한 디자인 연구

양근영 한국콘텐츠학회 2019 한국콘텐츠학회논문지 Vol.19 No.1

Metro stations are public places used by many people. If they use the station frequently, there is no struggling to find a way. But the first tourists or foreigners to visit are facing finding difficulties because of errors of the complicated sign and information. This study is the guidance of the metro station sign to provide effective information system and the research on the design improvement of metro station. In the first survey for this study I proceeded research about the concept of sign systems in metro station and literature search. In the second survey, I researched needs of the problems of the metro station users. In the third survey, I investigated Busan Metro Station's problems and design to improve the guide sign. In the survey results, users had a lot of difficulties in finding information because systematically increasing amount of information and guidance of the metro station. People can't find information because of sign indiscreet commercial advertising. Also they can get false information from sign without unity. To deal with these problems the metro station needs to improve design for a second-class citizen and refrain commercial advertising and design for information transfer capability. 도시철도역은 많은 이들이 사용하는 공공장소이다. 철도역을 자주 이용하면 길을 찾거나 가는 곳에 어려움이 없지만 처음 방문하는 여행객이나 외국인들은 복잡한 사인과 정보 등의 오류로 인하여 어려움을 겪는다. 본 연구는 도시철도역의 안내 사인시스템의 효과적인 정보를 제공하기 위한 도시철도역의 안내사인에 대하여 알아보고 디자인 개선하고자 한다. 본 연구를 위한 1차 조사로 도시철도역 사인시스템의 개념과 문헌에 대하여 조사하고, 2차 조사로 도시철도역 이용자의 문제점 니즈조사, 3차 조사는 안내사인 개선을 위해 부산도시철도역의 문제점과 디자인 개선에 대하여 알아보았다. 조사결과 도시철도역의 안내 사인은 늘어나는 정보량과 체계적으로 갖추어지지 않는 사인 등으로 인하여 사용자는 정보를 찾는 데 어려움이 많다. 무분별한 상업광고의 사인으로 찾고자 하는 정보를 찾지 못하고 통일되지 않는 사인계획으로 인하여 잘못된 정보를 얻기가 쉽다. 이러한 문제점을 해결하기 위하여 상업광고의 자제와 알기 쉽게 정보를 전달하기 위한 디자인 그리고 사회적 약자를 위한 디자인 개선이 필요하다.

통합관리 프로그램이 아급성 뇌졸중 환자의 운동기능, 인지기능, 우울에 미치는 효과

양근영,민혜숙 한국중환자간호학회 2021 중환자간호학회지 Vol.14 No.1

Purpose : This study examined the effects of an integrated management program on physical function, cognitive function, and depression in patients with subacute stroke. Methods : A nonequivalent control group design was adopted. The participants were assigned to either the experimental group (n=20) or control group (n=23). The experimental group received an 8-week integrated management program and standard rehabilitation service (i.e., physical therapy and occupational therapy), while the control group received the standard rehabilitation service only. Physical function was measured as gait speed and balance ability using the Berg Balance Scale (BBS). Cognitive function was measured with neuro-behavioral cognitive status examination (NCSE), and depression was measured using the Beck Depression Inventory-II (BDI-II). Repeated measure ANOVA was used to determine changes in physical function, cognitive function, and depression over 8-weeks. Results : The interaction between group and time was significant, indicating that the experimental group showed improvement in gait speed, balance ability, cognitive function (linguistic ability, linguistic memory, reasoning), and a decrease in depression compared to the control group. Conclusion : These results indicate that the integrated management program developed herein was beneficial in restoring physical function, cognitive function, and depression in subacute stroke patients.

팬데믹시대 인포데믹(Infodemic)감염 정보의 유형별 경향과 문제점

양근영 한국콘텐츠학회 2023 한국콘텐츠학회논문지 Vol.23 No.1

정보전염병 또는 인포데믹(infodemic)은 정보(information)와 전염병(epidemics)을 합친 단어이다. 인터넷의 발전은 사회가 정보화·세계화로 나아가는 데 도움이 된다. 하지만, 이는 바이러스, 잘못된 루머, 그 밖의 나쁜 소식이 순식간에 퍼지게 한다. 결국 이들 요소는 각 국가의 정치·경제·보안에 나쁜 영향을 일으키며, 특히 재난약자라고 할 수 있는 노약자, 장애인, 외국인 등에게 더욱 많은 어려움을 겪게 된다. 본 연구는 인포데믹 발생과 유형별 정보에 대하여 조사와 문제 해결 방법에 대하여 알아보았다. 연구방법으로 첫째, 재난약자의 사회적 시스템과 인포데믹 현상에 대하여 문헌조사, 둘째, 감염정보 환경의 유형별 조사와 경향, 셋째 감염정보에 대한 해결 방안에 대하여 알아보았다. 조사결과 인포데믹은 팬데믹 발생 초기 무분별하게 발생하기 시작하며, 감염정보와 관련하여 대부분 가짜뉴스로 확인되었다. 또한 정보내용의 허위성과 위해성에 관한 조사결과로는 위해성 높은 정보가 많은 수를 차지하고 있다. 평상시 인포데믹에 대한 문제점을 인식하고 감염정보의 예방과 교육훈련이 필요하다. 이러한 일련의 연구 과정을 통하여 향후 인포데믹 연구의 다양성을 확보한다는 측면에서 본 연구가 그 의미를 가질 것으로 예상한다.

알코올중독자가 경험하는 갈망에 관한 현상학적 연구

양근영,강향숙 한국학교・지역보건교육학회 2022 한국학교지역보건교육학회지 Vol.23 No.4