• Title/Summary/Keyword: $Ho^{3+}$

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Study on the Mechanism and Characteristics of OLED using $Alq_3$ ($Alq_3$를 이용한 OLED 소자의 메커니즘 특성 연구)

  • Lee, Ho-Shik;Yang, Seung-Ho;Park, Yong-Pil
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2007.06a
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    • pp.507-508
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    • 2007

  • Temperature-dependent current-voltage characteristics of Organic Light-Emitting Diodes(OLEDs) were studied. The OLEDs were based on the molecular compounds, N,N'-diphenyl-N,N'-bis(3-methylphenyl)-1,1'-diphenyl-4,4'-diamine (TPD) as a hole transport and tris(8-hydroxyquinoline) aluminum($Alq_3$) as an electron transport and emissive material. The current-voltage characteristics were measured in the temperature range of 10[K] and 300[K]. A conduction mechanism in OLEDs was interpreted in terms of tunneling and trap-filled limited current.

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Pedestrian Traffic Counting Using HoG Feature-Based Person Detection and Multi-Level Match Tracking (HoG 특징 기반 사람 탐지와 멀티레벨 매칭 추적을 이용한 보행자 통행량 측정 알고리즘)

  • Kang, Sung-Wook;Jung, Jin-dong;Seo, Hong-il;Lee, Hae-Yeoun
    • KIPS Transactions on Software and Data Engineering
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    • v.5 no.8
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    • pp.385-392
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    • 2016

  • Market analysis for a business plain is required for the success in the modern world. Most important part in this analysis is pedestrian traffic counting. A traditional way for this is counting it in person. However, it causes high labor costs and mistakes. This paper proposes an automatic algorithm to measure the pedestrian traffic count using images with webcam. The proposed algorithm is composed of two parts: pedestrian area detection and movement tracking. In pedestrian area detection, moving blobs are extracted and pedestrian areas are detected using HoG features and Adaboost algorithm. In movement tracking, multi-level matching and false positive removal are applied to track pedestrian areas and count the pedestrian traffic. Multi-level matching is composed of 3 steps: (1) the similarity calculation between HoG area, (2) the similarity calculation of the estimated position with Kalman filtering, and (3) the similarity calculation of moving blobs in the pedestrian area detection. False positive removal is to remove invalid pedestrian area. To analyze the performance of the proposed algorithm, a comparison is performed with the previous human area detection and tracking algorithm. The proposed algorithm achieves 83.6% accuracy in the pedestrian traffic counting, which is better than the previous algorithm over 11%.

  • https://doi.org/10.3745/KTSDE.2016.5.8.385 인용 PDF KSCI

Effects of Taurine Supplementation on Heat Shock Protein 70 and In Vitro Protein Syntheses in Liver of Broiler Chicks under Chronic Heat Stress (고온 스트레스 하에 타우린 첨가가 육계 간의 Heat Shock Protein 70 및 In Vitro의 단백질 합성에 미치는 영향)

  • Cho, Eun So Ri;Park, Garng Hee;Shim, Kwan Seob
    • Korean Journal of Poultry Science
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    • v.43 no.4
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    • pp.213-218
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    • 2016

  • This study was conducted to investigate the effect of taurine supplementation on heat shock protein 70 and in vitro protein turnover in broiler chicks under chronic heat stress. Chicks were allocated into 3 groups of 10 birds per group; the control group was maintained at a temperature of $24^{\circ}C$ without taurine (CO group), the heat-stressed group maintained at a temperature of $34^{\circ}C$ without taurine (HO group), and heat-stressed group maintained at a temperature of $34^{\circ}C$ with taurine (HT group). The final body and liver weights of broilers in the HO and HT groups were significantly lower than those of broilers in the CO group (P<0.05). However, these parameters of the broilers in the HT group were significantly higher than those of broilers in the HO group (P<0.05). The heat shock protein 70 (hsp70) concentration in the liver of broilers in the HO group was significantly higher than that of broilers in the CO and HT groups, but the hsp70 concentration in the liver of broilers in the HT group was not different from that of broilers in the CO group. Liver homogenates of 21 day-old broilers were incubated at temperatures of $37^{\circ}C$ and $45^{\circ}C$ to prove the effect of high temperature and taurine on total protein syntheses. Neither high temperature nor taurine supplementation affected protein syntheses in liver homogenates of the broilers. However, the more the temperature increased, the more the degradation rates of cytoplasmic protein in liver homogenates increased; however, taurine supplementation had no effects on the protein syntheses in the liver of the broiler. It is possible that taurine indirectly affected protein turnover via various physiological mechanisms.

  • https://doi.org/10.5536/KJPS.2016.43.4.213 인용 PDF KSCI