• Title/Summary/Keyword: photo

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Applications of a Quadrant plane Amorphous Silicon Photo Position Sensor (4분면 아몰퍼스 실리콘 Photo 위치센서의 응용)

  • 김철한;신영록;사공건
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2000.11a
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    • pp.445-447
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    • 2000
  • The terminal and core(wire conductor) in a Harness processing is connected by putting them in a applicator by virtue of a manual operation. A normal or abnormal condition of crimping connections is nearly determined by a skilled worker. In general, a skilled worker operates a press motor with a foot switch by pressing on foot and puts a wire conductor into a press with one hand. By doing so, sufficient efficiency is not obtained by a worker. In this paper, a basic study has done to make improve an efficiency by finding the normal arrangement out as to whether a terminal and wire conductor in Harness are placed on the right position or not with a quadrant plane photo position sensor.

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A Study on the Effects of the Optical Characteristics of Backlight Sources on the Photo Leakage Currents of a-Si:H Thin Film Transistor (비정질 실리콘 TFT의 광누설 전류에 Backlight 광원의 광학적 특성이 미치는 영향에 대한 연구)

  • Im, Seung-Hyeok;Kwon, Sang-Jik;Cho, Eou-Sik
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.21 no.9
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    • pp.844-847
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    • 2008
  • The photo leakage currents of a conventional hydrogenated amorphous silicon(a-Si:H) thin film transistor(TFT) were investigated and analyzed in case of illumination from various light sources such as halogen lamp, cold cathode fluorescent lamp(CCFL) backlight, and white light emitting diode(LED) backlight. The photo leakage characteristics showed the apparent differences in the leakage level and in the $I_{on}/I_{off}$ ratio in spite of the similar luminances of light sources. This leakage level is expected to be related to the wavelength of the lowest intensity peak from the spectral characteristics of light sources.

Improvement of Field Emission Characteristics of Dot-patterned Photo Sensitive CNT Paste (Dot 패턴 된 감광성 CNT 페이스트의 전계방출 특성 향상)

  • Kim, Jin-Hee;Lee, Han-Sung;Jeon, Ji-Hyeon;Goak, Jeung-Choon;Lee, Nae-Sung
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2007.11a
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    • pp.155-156
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    • 2007
  • Fabrication of dot-patterned carbon nanotube (CNT) emitters with excellent field emission properties using photo-sensitive CNT paste is described. The photosensitive CNT paste showed good photo-patternability, which led us to easily form $10-{\mu}m$-diameter dot arrays. We presented a parametric study on formulating the photo-sensitive paste and their resultant field emission characteristics.

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Automatic Control Point Measurement and Photo Orientation via Matching with Control Patch

  • Jaw, Jen-Jer;Wu, Yi-Shen
    • Proceedings of the KSRS Conference
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    • 2003.11a
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    • pp.375-377
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    • 2003
  • In this study, we employ the control patches, which have been created in previous photogrammetric projects, serving for the candidates of the control points that are likely to be found in the newly taken photos by utilizing image matching technique. Among others, the successful implementation of the above idea lies in the underlying factors: (1). Predicting the control patches and projecting them onto new photos; (2). Alignment of control patches with respect to the new photos; (3). Generating the equivalent ground elements of control patches versus the new photos for the purpose of correlation; (4). Developing effective matching methods and matching strategy; (5). Refining the exterior orientation parameters. What may show significance in this work comparing to traditional aerial-triangulation chain is that whenever at least three matched control patches succeed in a single photo, it follows that single photo orientation is applicable. The experiments suggest the potential efficiency of automatic control point measurement from control patch database and photo orientation by the proposed workflow.

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Study on Photo-aging Inhibition Effect of Microalgae-derived Oil for Cosmetic Material Development (화장품 소재 개발을 위한 미세조류 유래 오일의 광노화 억제 효과 연구)

  • Park, Eun-Kyung;Park, Sang-Hee;Yoon, Sang-A;Kim, You Sun;Lee, Woo-Ram;Kim, Woo-Jung
    • Journal of Marine Bioscience and Biotechnology
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    • v.10 no.2
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    • pp.83-90
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    • 2018
  • Ultraviolet (UV) radiation causes inflammation and matrix metalloproteinase (MMP) over-expression and extra cellular matrix depletion, leading to skin photo-aging such as wrinkle formation, dryness, and sagging. In this study, we demonstrated that pretreatment with the hexane extract of microalgae protects UVB mediated cell damages. The results of clinical study showed that Microalgal Oil treated group reduced wrinkle and improve elasticity. All these results suggest Microalgal Oil may be useful as new photo-aging cosmetics for protection against UV induced activity.

Photo-triggered Theranostic Nanoparticles in Cancer Therapy

  • Abueva, Celine DG.
    • Medical Lasers
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    • v.10 no.1
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    • pp.7-14
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    • 2021
  • In cancer therapy, it is often desirable to use precision medicine that involves treatments of high specificity. One such treatment is the use of photo-triggered theranostic nanoparticles. These nanoparticles make it possible to visualize and treat tumors specifically in a controlled manner with a single injection. Several novel and powerful photo-triggered theranostic nanoparticles have been developed. These range from small organic dyes, semiconducting and biopolymers, to inorganic nanomaterials such as iron-oxide or gold nanoparticles, carbon nanotubes, and upconversion nanoparticles. Using photo-triggered theranostic nanoparticles and localized irradiation, complete tumor ablation can be achieved without causing significant toxicity to normal tissue. Given the great advances and promising future of theranostic nanoparticles, this review highlights the progress that has been made in the past couple of years, the current challenges faced and offers a future perspective.

Product Images Attracting Attention: Eye-tracking Analysis

  • Pavel Shin;Kil-Soo Suh;Hyunjeong Kang
    • Asia pacific journal of information systems
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    • v.29 no.4
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    • pp.731-751
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    • 2019
  • This study examined the impact of various product photo features on the attention of potential consumers in online apparel retailers' environment. Recently, the method of apparel's product photo representation in online shopping stores has been changed a lot from the classic product photos in the early days. In order to investigate if this shift is effective in attracting consumers' attention, we examined the related theory and verified its effect through laboratory experiments. In particular, experiment data was collected and analyzed using eye tracking technology. According to the results of this study, it was shown that the product photos with asymmetry are more attractive than symmetrical photos, well emphasized object within a photo more attractive than partially emphasized, smiling faces are more attractive for customer than emotionless and sad, and photos with uncentered models focus more consumer's attention than photos with model in the center. These results are expected to help design internet shopping stores to gaze more customers' attention.