• Title/Summary/Keyword: 화상철

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The Study on Application of Image Processing System to enhance the Efficiency of Enforcement System for Overlimit(Overweight) Vehicles (운행제한(과적)차량 단속체계 성능 개선을 위한 화상인식 시스템 활용에 관한 연구)

  • Lim, Hyuk-Kyu;Kim, Hyun-Suk;Park, Hyun-Suk;Han, Dae-Cheol;Kim, Byeong-Ki;Kim, Ju-Hyun
    • Proceedings of the KIEE Conference
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    • 1999.07b
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    • pp.674-676
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    • 1999
  • At present electrical and electronic technologies is rapidly improved, and they have formed their market widely. New technologies such as traffic signal system, navigation system and unmanned vehicle are connected with transportation field. Among these advanced technologies, the Image Processing Technology has been used for the astro-navigation, medicine, military field and so forth. Recently The Image Processing Technologies are widely applied to traffic enforcement system for signal, speed limit and HOV lane. In this study we developed the advanced enforcement system for over limit(overweight)vehicles using Image Processing System.

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Effects of Gamijaungo on the burn mice model and the study of hematologic, pathologic and molecular mechanism (가미자운고(加味紫雲膏)가 mouse의 피부화상 치료에 대한 분자생물학적 효과 및 기전연구)

  • Lee, Jong-Chul;Kim, Gyung-Jun
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.28 no.1
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    • pp.53-67
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    • 2015
  • Objective: The aim of this study was to investigate the wound healing effect of herbal ointment, Gamijaungo, on the burn-induced model. Reports about Gamijaungo on the wound healing effect by local application in mice model or human study have published in the several domestic or internationally, but most are anecdotal and lack solid scientific evidence. Method: We observed the morphologic and histologic changes in the burn-induced mice model. we counted white blood cell and platelet changes. we confirmed VEGF, PI3K and pAkt protein expression by Western blot analysis. Result: In this study, we observed that Gamijaungo showed strong wound healing effects in the morphologic and histologic changes in the burn-induced mice model. Also we found that the significant changes of white blood cell and platelet changes by the treatment of Gamijaungo. In molecular mechanism, we got the strong positive effect by Gamijaungo treatment on angiogenesis, a key process in the formation of the granulation tissue during wound healing. Conclusion: These findings suggest the potential use of Gamijaungo as a therapeutic in thermal burn-induced skin injuries.

DNA Ploidy in Anaplastic Carcinoma of the Thyroid Gland by Image Analysis (갑상선 역형성암종의 DNA 배수성에 관한 화상분석학적 연구)

  • Lee, Ji-Shin;Lee, Min-Cheol;Park, Chang-Soo;Juhng, Sang-Woo
    • The Korean Journal of Cytopathology
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    • v.6 no.1
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    • pp.10-17
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    • 1995
  • Anaplastic carcinoma of the thyroid gland is one of the most malignant tumors. Recently, DNA ploidy measured by flow cytometry and image analysis has been suggested as an additional useful indicator of tumor behavior. Studies on the occurrence and clinical significance of DNA aneuploidy in anaplastic carcinoma of the thyroid are rare. In this study, the pattern of DNA ploidy was measured by image analysis on Papanicolaou stained slides in four cases of anaplastic carcinoma and also measured by flow cytometry using paraffin blocks in two cases. In all cases of anaplastic carcinoma, DNA aneuploidy was found by image analaysis. By flow cytometry, one case had a diploid peak and the other case had an aneuploid peak. According to the above results, we conclude that anaplastic carcinoma of the thyroid glands have a high incidence of DNA aneuploidy and image analysis using Papanicolaou stained slides is a useful method in detecting DNA aneuploidy.

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Effect of Alkyl Substituents, Surfactants, and Temperature on the Solubilization of 4-alkylaniline Derivatives by Cationic Surfactants (양이온계면활성제에 의한 4-알킬아닐린 유도체의 가용화에서 알킬치환기, 계면활성제 및 온도의 효과)

  • Lee, Dong-Cheol;Lee, Byung-Hwan
    • Journal of the Korean Applied Science and Technology
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    • v.37 no.2
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    • pp.250-259
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    • 2020
  • The solubilization constant (Ks) was determined by the UV-Vis method to investigate the interaction between organic matter (solubilized substance) and surfactant in solubilization. Solubilization constants and thermodynamic functions, according to the hydrophobic interaction between organic mater (4-alkylanilines with different alkyl substituent length) and cationic surfactants (DTAB, TTAB, and CTAB, having different hydrophobic lengths), were measured and calculated at various temperatures and compared with each other. As a result, the hydrophobic interactions between organic matters and cationic micelles increased with increasing the chain length of solute's substituent as well as surfactant's hydrophobe. However, the hydrophobic effect by the alkyl substituent of organic matter was greater than the hydrophobic effect by the surfactant. In addition, the results of the calculated thermodynamic functions showed that 4-alkylaniline was solubilized at the deep place in the micelle and its solubilization was greatly dependent on both the hydrophobic effects of organic matter and surfactant. At the calculated iso-structural temperature, the difference between the maximum and minimum values was less than 1K within the experimental conditions.

The Present and the Prospects for Batteries (전지기술의 국내외 연구동향)

  • 이주성
    • Proceedings of the Korean Institute of Surface Engineering Conference
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    • 1999.10a
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    • pp.1-2
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    • 1999
  • 시간과 공간의 구애를 받지 않는 양질의 음성, 화상, 문자정보의 교환을 위한 노력으로 디지털 휴대폰과 휴대용 컴퓨터가 등장하면서 음성과 문자정보의 교환분야에 커다란 진보를 이룩하였다. 그러나 현재는 휴대폰이 음성정보에 문자정보교환이 추가된 상황이기 때문에, 아직도 관련 정보교환기술 및 기기개발이 진행되고 있다. 앞으로 휴대폰과 휴대용 컴퓨터의 기능을 통합하고 화상정보까지 결합된 휴대용 정보기기를 위해서는 전자회로의 집적화 및 통신속도 증대가 필수적이다. 또한 이들 휴대용 정보기기를 구동시키기 위한 전력도 증가될 것으로 예측되기 때문에, 현재 전원으로 사용되는 2차전지보다 에너지 밀도가 더욱 증패된 전지가 요구될 것으로 예상된다. 그리고 내연기관의 배기에 의해 발생되는 환정오염문제를 해결하기 위한 방법중의 일환으로 전기자동차 개발이 진행되고 있으며, 이들 전기자동차에 2차전지를 장착하기 위해서 경제성이 있고, 고속충전이 가능하고, 안전성이 높은 고에너지 밀도의 2차 전지 개발이 요구되고 있다. 현재 2차전지는 음극재료나 양극재료에 따라 낚축전지, 니켈/카드륨(Ni/Cd) 전지, 니켈/수소(Ni/MH) 전지, 라륨 2 차전지등이 있으며, 전극재료의 고유특성에 의해 전위와 애너지 밀도가 결정된다. 특히 리튬 2차전지는 리튬의 낮은 산화환원전위와 분자량으로 인해 에너지 밀도가 높기 때문에 앞에서 언급한 휴대용 전자기기의 구동전원으로 많이 사용되고 있다. 리튬 2차전지는 음극 재료가 금속리튬인 경우는 리튬금속으로, 탄소재료인 경우는 리튬이온이라 하며, 한편으로 전해질이 고체 고분자이거나 혹은 역체 유기용매와 리튬염을 고분자와 혼성시킨 겔(gel)인 경우는 고분자로, 전해짙이 리튬염이 전리되어 있는 유동성 액체일 경우는 고분자를 생략하여 구분하고 있다. 즉 리튬금속 2 차전지(LB), 리튬이온 2 차전지(LIB), 리튬금속 고분자 2차전지(LPB), 리튬 이온 고분자 2차전지(LIPB)로 크게 구분된다. 금속리듐을 음극으로 사용하고 전해질로는 리튬염이 전리되어 있는 액체유기용매 를 사용한 리튬금속 2차전지는, 금속리튬전극이 충방전 과정을 반복하면서, 전리된 리튬이 균일하게 산화환원되지 못하고 표변에서 양극방향으로 성장하는 수지상 (dendrite) 현상으로 인해 안전성 확보에 문게가 있었다. 리튬과 알루미늄 합금형태로 음극에 사용한 동전형 전지는 상용화 되었지만, 이러한 단점을 개선하기 위해 리튬이온이 금속으로 석활되는 환원반응전위보다 높은 전위에서 전극재료가 충전되면서 리튬이온이 저장되고, 방전되면서 배출되는 탄소를 음극재료로, 그리고 리튬이온이 충방 전시 가역적으로 삼입 탈리되는 층상의 리튬금속산화물을 양극으로 구성하고, 엑체 전해질과 다공성 고분자 분리막을 사용한 것이 LIB이다. LIB에서 리튬이온의 이동이 가능한 액체전해질의 가능을 고분자 전해질이 대신함으로서 보다 높은 안정성을 확보 한 전지가 LIPB 이다. 또한 고분자 전해질을 사용한 경우 금속리튬상에서의 수지상 성장이 저하되는 현상이 관찰됨으로서, 이론용량이 3,860mAh/g 에 달하는 리튬금속 혹은 합금을 고분자 전지에서 음극으로 사용하고자 하는 2 차전지가 LPB 이다. 리튬 2차전지는 비록 1989년 액체전해질을 사용한 금속리튬 2차전지의 실패전력을 안고있지만 궁극적으로는 이론적으로 최대의 에너지밀도를 가지고 있는 LPB를 지 향할 것으로 예상되지만 가까운 장래에 실현되기는 어려울 것이다. 따라서 향후의 라튬 2차전지의 전개방향은 현재의 LIB를 고분자 전해질을 채용하는 LIPB로 진행시커면서 저가의 전극재료개발을 지속적으로 추진할 것으로 예상된다. 현재 리튬 2차전지는 소형전지에 국한되고 있지만 전기자동차나 전력저장용으로 이를 대형화시커기 위해서는 열적특성이 우수하고 저가인 전극재료개발이 선행되야하기 때문에, 저가의 탄소재료와 코발트산화물을 대신할 수 있는 철, 망칸 또는 니켈산 화물의 개발이 필요하다.

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Study on the Solubilization of 4-ethylaniline in the aqueous solutions of mixed surfactants (혼합계면활성제의 수용액에서 4-ethylaniline의 가용화에 관한 연구)

  • Lee, Dong-Cheol;Lee, Byung-Hwan
    • Journal of the Korean Applied Science and Technology
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    • v.37 no.3
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    • pp.438-447
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    • 2020
  • The critical micelle concentration (CMC) values of the mixed surfactant systems and the solubilization conatant (Ks) values of 4-ethylaniline in those solutions were measured and analyzed by the UV-Vis method. As a result, the mixed surfactant systems of TTAB/LSB and TTAB/TX-100 did not deviate significantly from ideal mixed micellization. However, the mixed systems of SDS/LSB and SDS/TX-100 showed great negative deviations from ideal mixed model. These differences showed that the intensity of the interaction between two components in the mixed micelle was different for each mixed system and that these differences greatly influenced the solubilization of 4-ethylaniline by a mixed surfactant system. Among pure surfactants, an anionic surfactant such as SDS showed a greater Ks value than other ionic surfactants, and the Ks value by each surfactant system decreased in the order of SDS≫TTAB≧LSB>TX-100. In addition, the Ks values of all the mixed surfactant systems were higher than those of the pure surfactants constituting the mixed systems.

Comparison of the Pattern of Changes in Salivary Cortisol by Degree of Burn and CAPS Score (화상 정도 및 CAPS 점수에 따른 타액 코티졸의 변화 양상 비교)

  • Kim, Jin-Na;Kim, Jee Wook;Choi, Ihn-Geun;Chun, Wook;Seo, Cheong Hoon;Kim, Kyung Ja;Lee, Boung Chul
    • Anxiety and mood
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    • v.8 no.2
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    • pp.93-98
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    • 2012
  • Objective : Cortisol, a product of hypothalamus-pituitary-adrenal axis (HPA axis), is one of our defensive mechanisms in response to stress. The level of cortisol in the saliva is a major biomarker of the stress response by HPA axis and shows diurnal variation. We measured salivary cortisol level and its diurnal variation to compare the pattern of changes by degree of burn and Clinician-Administered PTSD Scale (CAPS) score. Methods : We measured the salivary cortisol levels of 37 subjects hospitalized in the burn center at our facility from March to June 2012. Salivary cortisol levels were measured at 6 : 00 AM and at 7 : 00 PM. All subjects were tested for CAPS to evaluate the severity of posttraumatic stress disorder and the Hamilton Depression Rating Scale to evaluate and to control the coexisting depression. Results : Factorial ANOVA test revealed that there was a statistically significant difference in terms of the effect of the interaction between the degree of burn and the patient's CAPS score. Unlike the mild burn group, in the severe burn group, the patients who had a low CAPS score didn't show a normal diurnal variation and the patients who had a high CAPS score showed the normal diurnal variation. After a few months follow up, we found a greater degree of psychiatric complications in severe burn patients that had a lower cortisol stress response. Conclusion : We suppose that the disappearance of the stress response changes in salivary cortisol seen in the severe burn group may be caused by an impaired stress response. Through followed observation of the subjects, this disruption of cortisol response may cause psychiatric problems afterwards.

Study on the Solubilization of 4-Halogenated Anilines by Cationic Surfactants (DTAB, TTAB, and CTAB) (양이온성 계면활성제(DTAB, TTAB 및 CTAB)에 의한 4-할로겐화 아닐린의 가용화에 대한 연구)

  • Lee, Byung-Hwan;Lee, Dong-Cheol
    • Journal of the Korean Applied Science and Technology
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    • v.38 no.4
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    • pp.994-1002
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    • 2021
  • The solubilization constants (Ks) of 4-halogenated aniline derivatives by cationic surfactants (DTAB, TTAB, and CTAB) were measured by the UV-Vis method. As a result, the Ks values decreased as the temperature increased for all the aniline derivatives and showed a tendency to increase as the radius of the halogen substituent and the hydrophobic length of surfactant increased. The calculated values of ΔGo and ΔHo for these solubilizations all showed negative values within the measured range, but all the ΔSo values showed positive values. For all the 4-halogenated anilines, the ΔGo values all tended to decrease as the temperature increased, but both values of ΔHo and ΔSo showed a tendency to increase. In addition, as the radius of the halogen substituent increased, the values of ΔHo and ΔSo tended to decrease in general. However, when the hydrophobic group length of the surfactant was increased, the values of these thermodynamic functions showed a tendency to increase in general, although it differed depending on the type of aniline derivative. From the changes of such functions, it was possible to estimate the type and strength of interactions between 4-halogenated aniline and micelle, and the location at which they were solubilized in the micelle.

A Pilot Study on Environmental Understanding and Estimation of the Nak-Dong River Basin Using Fuyo-1 OPS Data (Fuyo-1 OPS 자료를 이용한 낙동강 하류지역의 환경계측 시고)

  • Kim, Cheon
    • Korean Journal of Remote Sensing
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    • v.12 no.2
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    • pp.169-198
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    • 1996
  • The objectives of this investigation are : 1. To analyze spectral signature and the associated vegetation index for geometric illumination conditions inf1uenced by low solar elevation and high slope orientations in mountainous forest. 2. To assess the accuracy of the spectral angle mapper classification for the a winter land cover in comparison with the maximum likelihood classification. 3. To produce the image of water quality and water properties that could be used to estimate the water pollution sources and the tide-included by turbid water in estuarine and coastal areas. These objectives are to characterize environmental and ecological monitoring applications of the Nak-Dong River Basin by using Fuyo-1 OPS VNIR data acquired on December 26, 1992. The results of this paper are as follows : 1. The spectral digital numbers and vegetation indexes (NDVI and TVI) of mountainous forest are higher on the slope facing the sun than on the slope hidden the sun under low sun elevation condition. 2. The spectral angle mapper algorithm produces a more accurate land cover classification of areas with steep slope, various aspects and low solar elevation than the maximum likelihood classifier. 3. The maximum likelihood classification images can be used for identifying the location and movement of both freshwater and salt water, regardless of geometric illumination conditions. 4. The color-coded density sliced image of selected water bodies by using the near-infrared band 3 can provide distribution of the water quality of the Lower Nak-Dong River. 5. The color-coded normalized difference vegetation index image of the selected mountain forest is suitable to classify winter vegetation cover types, i.e., forest canopy densities for slope orientations.

Adaptive Spatio-Temporal Prediction for Multi-view Coding in 3D-Video (3차원 비디오 압축에서의 다시점 부호화를 위한 적응적 시공간적 예측 부호화)

  • 성우철;이영렬
    • Journal of Broadcast Engineering
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    • v.9 no.3
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    • pp.214-224
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    • 2004
  • In this paper, an adaptive spatio-temporal predictive coding based on the H.264 is proposed for 3D immersive media encoding, such as 3D image processing, 3DTV, and 3D videoconferencing. First, we propose a spatio-temporal predictive coding using the same view and inter-view images for the two TPPP, IBBP GOP (group of picture) structures 4hat are different from the conventional simulcast method. Second, an 2D inter-view direct mode for the efficient prediction is proposed when the proposed spatio-temporal prediction uses the IBBP structure. The 2D inter-view direct mode is applied when the temporal direct mode in B(hi-Predictive) picture of the H.264 refers to an inter-view image, since the current temporal direct mode in the H.264 standard could no: be applied to the inter-view image. The proposed method is compared to the conventional simulcast method in terms of PSNR (peak signal to noise ratio) for the various 3D test video sequences. The proposed method shows better PSNR results than the conventional simulcast mode.