• 제목/요약/키워드: Byun-jo

검색결과 223건 처리시간 0.041초

원거리 3D 입체영상촬영을 위한 거리에 따른 IOD와 CONV의 획득에 관한 연구 (Studies on the acquisition of CONV and IOD according to the distance for long-distance 3D stereoscopic video shooting)

  • 김현조;김민;손경민;김관형;변기식
    • 한국정보통신학회:학술대회논문집
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    • 한국정보통신학회 2013년도 추계학술대회
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    • pp.919-921
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    • 2013
  • 영상시장의 개척과 디지털 기술의 발전과 더불어 차세대 3D 입체영상기술에 대한 관심과 수요가 증가하고 있다. 입체 정보는 크게 '단안 입체 정보(monoscopic depth cue)'와 '양안 입체 정보(stereoscopic depth cue)'로 분류 할 수 있다. 단안 입체 정보는 은폐, 상대적 크기, 상대적 밀도, 시야 안의 높이, 공기투시, 운동투시, 초점조절인 7가지로 경험에 의한 입체감을 지각하는 것을 말하며 양안 입체 정보는 두 눈으로 볼 때 처음으로 깊이를 지각 할 수 있는 것으로 크게 '동시시(simultaneous perception)', '융합(sensory fusion)', '입체시(stereoscopic vision)'의 세종류의 기능으로 분류한다. 3D 촬영은 이 양안시의 원리를 이용하여 두 대의 카메라의 좌우 영상을 합성하여 깊이감 있는 영상을 만들어 내게 된다. 본 논문에서는 3D 촬영방법은 촬영방식에 따라 크게 평행방식, 직교방식, 교차방식이 있는데 이중 중 원거리 촬영에 유리한 교차방식을 활용하여 사이드 바이 사이드 리그(Rig; 카메라를 수평으로 설치할 수 있도록 만들어진 장치)를 원거리 촬영에 맞게 축간거리를 기존의 리그 사이즈보다 2배 이상 긴 리그를 제작하여 보다 먼 거리에서의 상이한 좌우 영상획득이 가능하도록 설계하였다. 또한, 일정한 간격에 따라 피사체를 촬영하면서 거리에 따른 양 카메라의 가장 이상적인 IOD(Interocular Distance)와 CONV(Convergence)를 찾고, 교차방식촬영에 따른 특징적인 아티팩트인 키스톤 왜곡(Keystone distance)의 보정을 통한 원거리 입체영상을 효과적으로 획득하는데 본 연구방법을 제안하고자 한다.

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족저부 통증 및 비증을 호소하는 측만증 동반 환자에게 족부 보조기와 추나 치료를 포함한 한의학적 치료를 병행한 증례보고 (A Clinical Case Report Treated with Foot Orthosis and Korean Medicine therapy including Chuna for the Patient Suffer Sole Pain and Numbness that Accompany Scoliosis)

  • 이현호;정성현;최지훈;이기언;조경상;변다영
    • 척추신경추나의학회지
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    • 제12권2호
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    • pp.53-62
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    • 2017
  • Objectives : The purpose of this study is to report the effect of foot orthosis and Korean Medicine therapy including Chuna on symptom that accompany scoliosis by observing one clinical case study. Methods : One patient suffer sole pain and numbness that accompany scoliosis who received outpatient treatment was investigated for the changes in numerical rating scale(NRS), pelvic height and pelvic angle. Pelvic height and angle were checked by using Whole spine X-ray. During outpatient treatment, patient treated by foot orthosis and Korean Medicine therapy including Chuna. Results : After 7 times treatment, NRS showed a remarkable difference, which decreased from 7 to 1. Pelvic height decreased from 11.16mm to 8.58mm and pelvic angle decreased from $5.03^{\circ}$ to $3.16^{\circ}$. They showed a slight difference. Conclusions : Foot orthosis and Korean Medicine therapy including Chuna might be effective in the patient that showed symptoms which is caused by scoliosis.

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선방활명음(仙方活命飮)메탄올 추출물이 LPS로 유도된 Raw 264.7 Cell에서의 Pro-inflammatory Mediator에 미치는 영향 (Inhibitory Effect of Sunbanghwalmyungeum MeOH Extract on Pro-inflammatory Mediator in Lipopolysaccharide - activated Raw 264.7 Cells)

  • 최송이;조미정;김상찬;변성희
    • 대한본초학회지
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    • 제23권3호
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    • pp.11-18
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    • 2008
  • SunBangHwalMyungEum (SBH) has the effects of subduing swelling, resolving masses and alleviating pain in traditional oriental medicine. Recent studies showed that SunBangHwalMyungEum produced anti-cancer, anti-metastasis and immuno-modulatory effects. However there is lack of studies regarding the effects of SBH on the immunological activities. The present study was conducted to evaluate the effect of SBH on the regulatory mechanism of cytokines and nitric oxide (NO) in Raw 264.7 cells. Methods : After the treatment of SBH, cell viability was measured by MTT assay, NO production was monitored by measuring the nitrite content in culture medium. Inducible nitric oxide synthase (iNOS) was determined by immunoblot analysis, and levels of cytokine were analyzed by sandwich immunoassays. Results : Results provided evidence that SBH inhibited the production of NO, iNOS, $interleukin-1{\beta}$ ($(IL-1{\beta})$), IL-6, and the activation of phospholylation of inhibitor ${\kappa}B{\alpha}$ in Raw 264.7 cells activated with lipopolysaccharide. Conclusions : These findings suggest that SBH can produce anti-inflammatory effect, which may play a role in adjunctive therapy in Gram-negative bacterial infections.

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Effect of Irradiation on the Microbial Content of Ready-to-Use Cooked Carrot

  • Byun, Myung-Woo;Lee, Na-Young;Jo, Cheo-Run;Lee, Eun-Young;Kim, Hee-Jeong;Shin, Dong-Hwa
    • Food Science and Biotechnology
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    • 제16권1호
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    • pp.138-141
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    • 2007
  • The aim of this study was to investigate the effect of irradiation treatment on the inactivation of pathogens in ready-to-use cooked carrot. The pathogens tested were Salmonella typhimurium, Escherichia coli, Staphylococcus aureus, and Listeria inocua. Following the inoculation of these organisms into cooked carrot (about $10^6-10^8\;CFU/g$), the growth of each was inhibited due to irradiation for 24 hr of storage at $20^{\circ}C$. S. typhimurium and E. coli inoculated into cooked carrot were not detected following irradiation with 3 kGy. S. aureus and L. inocua inoculated into the cooked carrot decreased by 5 logs (CFU/g) following 2 kGy irradiation. The range of $D_{10}$ values was from 0.30-0.50. The Hunter color, $L^*-,\;a^*-$, and $b^*-values$, and the hardness of the cooked carrot were not effected by irradiation treatment. The sensory score of irradiated cooked carrot was not statistically different from that of non-irradiated samples (p>0.05). These results indicate that low dose irradiation can enhance the microbial safety and extend the shelf-life of ready-to-eat foods such as cooked carrot.

충북 일부지역 주민들의 호흡기 질환 및 한방 감기 예방 치료 수요에 관한 실태조사 (Research on a Respiratory Disease and Demand for Oriental Medical Cold Preventing Therapy in Chung-Buk)

  • 양수영;황지호;변준섭;안정조;홍권의;박양춘
    • 동의생리병리학회지
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    • 제21권4호
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    • pp.1045-1050
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    • 2007
  • This study was conducted to help oriental medical prevention program policy for improvement of public health in a local community. We have researched respiratory diseases and demands for oriental medical cold preventing therapy of some residents in Chung-Buk. We have conducted individually face-to-face interviews through standardized questionnaires to 141 residents of two towns (76 in Haeng-jung, 65 in Gu-mi) under the jurisdiction of Chung-won Public Health Center. The senior aged over 65 was 53.9%, which was a little more than the average senior age. The rate which could be diagnosed as a disorder of lung function was 2.97% by Lung Function Test. The participants diagnosed as Asthma accounted for 17.9% by Symptom Based Easy Asthma Diagnosis of Easy Asthma Management(EAM). The participants who had intentions of participating in oriental medical cold preventing therapy accounted for 58.6%. And among the oriental medical cold preventing therapy the preference for acupuncture and moxibustion was 77.1 %, which was much higher than any other thing. It is thought that people still have little understanding about the oriental medical cold preventing therapy. Therefore it is considered that the Korean government should try to establish well-organized cold preventing system on the basis of Oriental Medical theory for a local community.

AC Direct IC를 이용한 25W급 LED 조명기 설계에 관한 연구 (Efficient Multicasting Mechanism for Mobile Computing Environment)

  • 정재훈;감지현;조소현;우주;김민;김관형;이성민;변기식
    • 한국정보통신학회:학술대회논문집
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    • 한국정보통신학회 2017년도 추계학술대회
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    • pp.510-511
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    • 2017
  • 본 논문에서는 현재 단수명 및 잔고장의 빈도가 높은 LED 조명기의 수명 및 고장 발생을 최소화 하고자 연구를 진행하였으며, 현재 LED 칩의 경우 수명이 반영구적이라고 할 수 있지만, LED 칩의 수명에 비해 LED 조명기의 구동드라이버는 수명이 길지 않다. 최근에는 중국산등의 저가 LED 조명기가 시장에 진입함으로써 많은 소비자로부터 LED 조명기의 인식이 나빠지고 있다. 이러한 문제점을 해결하고자 본 논문에서는 고장의 원인이 되는 LED 구동드라이버 부분에 있는 전해 콘덴서 부분을 제거하여 기존의 구동드라이버 보다 수명이 긴 AC Direct IC를 이용하여 25W급의 LED 조명기를 설계하였다.

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원거리 입체촬영용 카메라 축간거리 조절을 위한 퍼지추론 시스템 (Design of Fuzzy Inference System for Cameras Inter-Axial Distance Control of Remote Stereoscopic Photographs)

  • 변기식;오세웅;김관형;김민;김현조
    • 한국정보통신학회논문지
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    • 제19권1호
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    • pp.41-49
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    • 2015
  • 일반적으로 원거리 피사체를 입체로 촬영할 경우 두 대의 카메라를 교차하기 보다는 평행으로 놓고 좌우 영상을 획득한다. 이를 위해서 특정거리 피사체에 대하여 축간거리와 렌즈의 초점거리를 다양하게 변화시켜가면서 좌우영상들의 깊이총량을 분석하였다. 이들 분석 작업을 통하여 시각적 피로와 시각적 불안정을 주지 않는 축간거리와 렌즈의 초점거리에 대한 데이터를 선택하고, 이들 데이터를 통하여 퍼지제어기를 설계하였다. 피사체에 대한 입체영상을 획득하기 위하여 설계한 퍼지제어기로 축간거리와 렌즈의 최대초점거리를 추론하여 안정된 입체영상임을 확인하였다. 설계된 퍼지제어기는 원거리 피사체의 거리만 입력되면 카메라의 축간거리와 카메라 최대 초점거리 범위가 설정되는 동적 시스템 설계에 활용될 수 있음을 확인하였다.

포장방법과 감마선 조사에 의한 소시지의 잔류 아질산염 감소효과 (Reduction of Residual Nitrite Level in Cooked Pork Sausage with Different Packaging and Gamma Irradiation)

  • 조철훈;안현주;김재현;송인환;김우정;변명우
    • 한국식품과학회지
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    • 제34권4호
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    • pp.741-745
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    • 2002
  • 소시지 제조시 미생물을 제어함과 동시에 잔류 아질산염함량을 감소시키기 위하여 감마선을 이용하였다. 제조된 소시지는 함기, 진공, 그리고 $CO_2$(100%) 포장하여 감마선을 0, 5, 10 kGy로 조사한 후 4주 동안 냉장저장$(4^{\circ}C)$하면서 총균수, 대장균군수, 그리고 잔류 아질산염 함량을 조사하였다. 감마선 조사시 총균수와 대장균군의 수를 유의적으로 감소시켰으며 비조사구에서는 진공과 $CO_2$, 포장이 함기포장보다 미생물 생육제어에 효과적이었으며, 잔류 아질산염의 함량은 감마선 조사에 의해 유의적으로 감소하였다(p<0.05). 또한 $CO_2$ 포장구가 잔류 아질산염 함량 감소효과에 가장 뛰어난 결과를 얻어 감마선과 $CO_2$ 포장을 병용처리한다면 소시지 제조시 미생물 제어 및 잔류 아질산염의 함량을 효과적으로 감소시켜 소비자에게 더욱 안전한 식품을 공급하게 될 수 있으리라 사료된다.

Packaging Effect on Microbial and Physicochemical Changes in Irradiated Cooked Pork Sausage during Frozen Storage at $-21^{\circ}C$

  • Cheorun Jo;Son, Jun-Ho;Kim, Jae-Hyun;Cho, Kyoung-Whan;Byun, Myung-Woo
    • Preventive Nutrition and Food Science
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    • 제6권4호
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    • pp.211-215
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    • 2001
  • The packaging effect on physicochemical changes in irradiated sausage stored at -2$0^{\circ}C$ was studied. Emulsion-type cooked pork sausage was made with (156 ppm) or without NaNO$_2$ (0 ppm), and packaged in three different conditions such as aerobic, vacuum and $CO_2$ (100%). The samples irradiated at 0, 5 and 10 kGy absorbed dose, and the total number of microorganisms, lipid oxidation, color and texture were analyzed during frozen storage at-2$0^{\circ}C$. Irradiation of the sausage at 10 kGy completely controlled microbial growth during storage. An NaNO$_2$ addition to the sausage significantly reduced lipid oxidation, and the TBARS value of the sausage with aerobic packaging was higher than that with the vacuum and $CO_2$ packaging. The NaNO$_2$ addition increased Hunter color a-value dramatically, but no packaging effect was found (p > 0.05). Irradiation influenced shear values resulting in lower shear values in 10 kGy-irradiated sausages with aerobic packaging, and $CO_2$ packaged sausage showed comparatively lower shear value than other packaging methods. From the results, vacuum or $CO_2$ (100%) packaging were better than aerobic packaging for frozen stored pork sausage, especially far microbial quality and lipid oxidation.

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경기도 해수욕장 모래의 안전성 확보를 위한 선행연구 (Preliminary Research on Securing the Stability of Sandy Beaches in Gyeonggi Province)

  • 최윤호;변주형;원종무;김종성;신종현;유창숙;정윤하;박민빈;오조교
    • 한국환경보건학회지
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    • 제46권6호
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    • pp.694-701
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    • 2020
  • Objectives: The main purpose of this study is to evaluate heavy metal concentrations (Cd, As, Hg, Pb, Cr6+), particle size distribution, hydrochloric acid solubility, and parasite eggs in sand in five non-designated sandy beaches in Gyeonggi Province. Methods: The sampling sites are five non-designated Gyeonggi-do sandy beaches located in Ansan and Hwaseong. ICP-OES and UV, a Vibratory Sieve Shaker, and PCM were respectively used to analyze heavy metal concentrations, particle size distribution, and parasite eggs in the sand. Results: Heavy metals were detected within the beach's safety management standards and some of the detected As and Pb before and after beach opening were lower than one-quarter of the average value. In addition, the results of the T-test to confirm the As and Pb concentration changes before and after opening showed a significant difference in some beaches. The composition of sand was 86.53% according to the particle size distribution standard (2.0-0.02 mm), and the hydrochloric acid solubility was the highest at Gubongsolsup (4.9%) and the lowest at Bangameo-li (0.2%). Parasite eggs were undetected in all beach sand before and after opening. Conclusions: The safety of heavy metal concentrations in sandy beaches was secured in the selected five beaches in Gyeonggi Province. However, continuous efforts are required to make Gyeonggi-do's beaches suitable according to the Act on the Use and Management of Beaches.