• Title/Summary/Keyword: K channel

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Face/non-face channel fit comparison of life insurance company and non-life insurance company using social network analysis (소셜네트워크 분석을 활용한 생보사와 손보사의 대면/비대면 채널의 적합성 비교)

  • Chun, Heuiju;Leem, Byunghak
    • Journal of the Korean Data and Information Science Society
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    • v.25 no.6
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    • pp.1207-1219
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    • 2014
  • In this study, 1) we compare face channel and non-face channel of life insurance company and non-life insurance company with insurance employs' suitability opinion about channel type, channel property, channel evaluation items requiring when selling insurance products, 2) we construct two social networks for life insurance companies and non-life insurance companies and find/compare two networks' properties, and then want to suggest any direction about sale channel strategy. As the result of comparing social networks of life insurance company and non-life insurance company created by insurance selling channel fit evaluation, employs of life insurance companies have more common opinion than those of non-life insurance companies and so can have more same directional channel strategy. However, property insurance companies need to manage their own channel strategy based on their own circumstance.

The effect of flavonoids on the TREK-1 channel (TREK-1 채널에 대한 플라보노이드의 효과)

  • Kim, Yang-Mi;Kim, Kyung-Ah
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.12 no.6
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    • pp.2660-2667
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    • 2011
  • TREK-1 channel is a member of the two-pore domain potassium (K2P) channel family that is regulated by intracellular pH, membrane stretch, polyunsaturated fatty acids, temperature, and some neuroprotectant agents. TREK-1 channel can influence neuronal excitability by regulating leakage of potassium ions and resting membrane potential. TREK-1 channel has been shown to be overexpressed in prostate cancer cells. Although the importance of these properties, relatively little is known about flavonoid effects in the regulations of TREK-1 channel. The purpose of the study was to screening of flavonoids as the TREK-1 channel modulator using one of electrophysiological techniques such as excised inside-out patch configuration. We demonstrated blocking effect on TREK-1 channel by flavonoids such as epigallocatechin-3-gallate (EGCG), curcumin and quercetin in CHO cells transiently expressing TREK-1 channel. The inhibition of TREK-1 channel by quercetin and curcumin was reversible, whereas EGCG was little reversible. Quercetin, EGCG and curcumin decreased the relative channel activity to 73%, 91% and 94%, respectively. The half-inhibitory concentration (IC50) of curcumin, quercetin and EGCG was $1.04{\pm}0.19\;{\mu}M$, $1.13{\pm}0.26\;{\mu}M$ and $13.5{\pm}2.20\;{\mu}M$ in CHO cells expressing TREK-1 channel, respectively. These results indicate that flavonoids might regulate TREK-1 and this regulation might be one of the pharmacological actions of flavonoid in nervous systems and cancer cells.

The Literature Study on Venesection therapy (자락요법(刺絡療法)의 문헌적(文獻的) 고찰(考察))

  • Min, Boo-Ki;Yoon, II-Ji;Choi, Seung-Hoon;Oh, Min-Suck
    • Journal of Haehwa Medicine
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    • v.13 no.2
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    • pp.277-287
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    • 2004
  • I have come to next conclusions in consequence of documentary study about medical books of many generations regarding venesection therapy. 1. Venesection therapy is much used for five sensory organ disease. Besides that internal disease, pain paralysis disease of muscle and joints, sugical disease, disease of woman and children, fever sunstroke CVA emergency case follow that in the order of frequency of use. 2. It is used for swollen tongue, eye pain, pharyngitis, swelling and pain in the throat, bleeding from the eye ear nose mouth or subcutaneous tissue, tonsillitis, aphthae and so on in the five sensory organ disease. Focus, sosang, jinjin yuye, taiyang, baihui are used for five sensory organ disease in the order of frequency of use. 3. It is used for malaria, headache, precordial pain, head-wind, abdominal colic, diseases characterized by acute diarrhea and vomiting, and so on in the Internal disease. Superficial venules and lymph vessesls, taiyang, quze are used for Internal disease in the order of frequency of use. 4. It is used for low back pain, hypochondriac pain, numbness, knee pain, tinea pedis, red swelling pain of hand and arm, flaccidity-syndrome, and so on in the pain paralysis disease of muscle and joints. Weizhong, superficial venules and lymph vessesls, Ashi point, zhigou are used for pain paralysis disease of muscle and joints in the order of frequency of use. 5. It is used for furuncle, tinea capitis, and so on in the sugical disease. Focus, weizhong are used for sugical disease in the order of frequency of use. 6. It is used for inflammatory disease with redness of skin, and so on in the disease of woman and children. Focus, weizhong, yanglingquan, yaoshu, sanyinjiao are used for disease of woman and children in the order of frequency of use. 7. It is used for fever, CVA, sunstroke, cadaverous coma, common cold, and so on in the fever sunstroke CVA emergency case. Sosang, weizhong, chize are used for fever sunstroke CVA emergency case in the order of frequency of use. 8. The urinary bladder channel of foot-taiyang is most used. Next there are the du channel, the stomach channel of foot-yangming, the lung channel of hand-taiyin, the gall baldder channel of foot-shaoyang, the triple-warmer channel of hand-shaoyang, the large intestine channel of hand-yangming, the spleen channel of foot-taiyin, the kidney channel of foot-shaoyin the pericardium channel of hand-jueyin the liver channel of foot-jueyin, the ren channel, the heart channel of hand-shaoyin, the small intestine channel of hand-taiyang in the order of frequency in use. 9. Superficial venules and lymph vessesls, focus, five shu points, extra-point, back point are used in the venesection therapy, those are characteristic of locating an acupuncture point.

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Dynamic Characteristics of Multi-Channel Metal-Induced Unilaterally Precrystallized Polycrystalline Silicon Thin-Film Transistor Devices and Circuits (금속 유도 일측면 선결정화에 의해 제작된 다채널 다결정 실리콘 박막 트랜지스터 소자 및 회로의 전기적 특성 평가)

  • Hwang, Wook-Jung;Kang, Il-Suk;Lim, Sung-Kyu;Kim, Byeong-Il;Yang, Jun-Mo;Ahn, Chi-Won;Hong, Soon-Ku
    • Korean Journal of Materials Research
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    • v.18 no.9
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    • pp.507-510
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    • 2008
  • Electrical properties of multi-channel metal-induced unilaterally precrystallized polycrystalline silicon thin-film transistor (MIUP poly-Si TFT) devices and circuits were investigated. Although their structure was integrated into small area, reducing annealing process time for fuller crystallization than that of conventional crystal filtered MIUP poly-Si TFTs, the multi-channel MIUP poly-Si TFTs showed the effect of crystal filtering. The multi-channel MIUP poly-Si TFTs showed a higher carrier mobility of more than 1.5 times that of the conventional MIUP poly-Si TFTs. Moreover, PMOS inverters consisting of the multi-channel MIUP poly-Si TFTs showed high dynamic performance compared with inverters consisting of the conventional MIUP poly-Si TFTs.

A Development of Multi-Channel Acupuncture Point Balance Measurement System (다채널 경혈평형 계측 시스템 구현에 관한 연구)

  • Kim, Chang-Mo;Kim, Eung-Soo;Han, Soon-Chen;Kim, Jung-Kuk;Huh, Woong
    • Proceedings of the IEEK Conference
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    • 2003.07c
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    • pp.2903-2906
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    • 2003
  • In this paper, we developed a multichannel acupuncture point balance measurement system that measures skin resistances at various acupuncture points to evaluate the balancing state of the meridian. The system consists of 16 channel resistance-voltage converter, signal processing part for signal amplification and filtering, A/D conversion part, micro-controller part, and data processing part. Compared to the previously developed 1 channel or 4 channel systems, it is found that the 16 channel system can measure the skin resistances of 16 acupuncture points, simultaneously, providing various clinical information such as balance and variation of the resistance value.

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A Continuous Regional Current-Voltage Model for Short-channel Double-gate MOSFETs

  • Zhu, Zhaomin;Yan, Dawei;Xu, Guoqing;Peng, Yong;Gu, Xiaofeng
    • JSTS:Journal of Semiconductor Technology and Science
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    • v.13 no.3
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    • pp.237-244
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    • 2013
  • A continuous, explicit drain-current equation for short-channel double-gate (DG) MOSFETs has been derived based on the explicit surface potential equation. The model is physically derived from Poisson's equation in each region of operation and adopted in the unified regional approach. The proposed model has been verified with numerical solutions, physically scalable with channel length and gate/oxide materials as well as oxide/channel thicknesses.

Analysis of 1/f Noise in Fully Depleted n-channel Double Gate SOI MOSFET

  • Kushwaha Alok;Pandey Manoj Kumar;Pandey Sujata;Gupta A.K.
    • JSTS:Journal of Semiconductor Technology and Science
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    • v.5 no.3
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    • pp.187-194
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    • 2005
  • An analysis of the 1/f or flicker noise in FD n-channel Double Gate SOI MOSFET is proposed. In this paper, the variation of power spectral density (PSD) of the equivalent noise voltage and noise current with respect to frequency, channel length and gate-to-source voltage at various temperatures and exponent $C(i.e\;1/f^c$ is reported. The temperature is varied 125 K from to room temperature. The variation of PSD with respect to channel length down to $0.1{\mu}m$ technology is considered. It is analyzed that l/f noise in FD n-channel Double Gate SOI MOSFET is due to both carrierdensity fluctuations and mobility-fluctuations. But controversy still exits to its origin.

Wireless Channel Identification Algorithm Based on Feature Extraction and BP Neural Network

  • Li, Dengao;Wu, Gang;Zhao, Jumin;Niu, Wenhui;Liu, Qi
    • Journal of Information Processing Systems
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    • v.13 no.1
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    • pp.141-151
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    • 2017
  • Effective identification of wireless channel in different scenarios or regions can solve the problems of multipath interference in process of wireless communication. In this paper, different characteristics of wireless channel are extracted based on the arrival time and received signal strength, such as the number of multipath, time delay and delay spread, to establish the feature vector set of wireless channel which is used to train backpropagation (BP) neural network to identify different wireless channels. Experimental results show that the proposed algorithm can accurately identify different wireless channels, and the accuracy can reach 97.59%.

An Experimental Studies on Heat Transfer and Friction Factor in a Square Channel with Varying Number of Ribbed Walls

  • Oh Se-Kyung;Kim Won-Cheol;Ahn Soo-Whan;Kang Ho-Keun;Kim Myoung-Ho
    • Journal of Advanced Marine Engineering and Technology
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    • v.29 no.3
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    • pp.281-289
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    • 2005
  • An experimental study on the heat transfer and friction characteristics of a fully developed turbulent air flow in a square channel with $45^{\circ}$ inclined ribs on one, two, and four walls is reported. Tests were performed for Reynolds number ranging from 7,600 to 24,900. The pitch-to-rib height ratio, p/e, was kept at 8 and rib height-to-channel hydraulic diameter ratio, $e/D_h$, was kept at 0.0667. The heat transfer coefficient and friction factor values were enhanced with the increase in the number of ribbed walls. Results of this investigation could be used in various applications of internal channel turbulent flows involving different number of roughened walls.

Electrically Stable Transparent Complementary Inverter with Organic-inorganic Nano-hybrid Dielectrics

  • Oh, Min-Suk;Lee, Ki-Moon;Lee, Kwang-H.;Cha, Sung-Hoon;Lee, Byoung-H.;Sung, Myung-M.;Im, Seong-Il
    • 한국정보디스플레이학회:학술대회논문집
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    • 2008.10a
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    • pp.620-621
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    • 2008
  • Transparent electronics has been one of the key terminologies forecasting the ubiquitous technology era. Several researchers have thus extensively developed transparent oxide-based thin-film transistors (TFTs) on glass and plastic substrates although in general high voltage operating devices have been mainly studied considering transparent display drivers. However, low voltage operating oxide TFTs with transparent electrodes are very necessary if we are aiming at logic circuit applications, for which transparent complementary or one-type channel inverters are required. The most effective and low power consuming inverter should be a form of complementary p-channel and n-channel transistors but real application of those complementary TFT inverters also requires electrical- and even photo-stabilities. Since p-type oxide TFTs have not been developed yet, we previously adopted organic pentacene TFTs for the p-channel while ZnO TFTs were chosen for n-channel on sputter-deposited $AlO_x$ film. As a result, decent inverting behavior was achieved but some electrical gate instability was unavoidable at the ZnO/$AlO_x$ channel interface. Here, considering such gate instability issues we have designed a unique transparent complementary TFT (CTFTs) inverter structure with top n-ZnO channel and bottom p-pentacene channel based on 12 nm-thin nano-oxide/self assembled monolayer laminated dielectric, which has a large dielectric strength comparable to that of thin film amorphous $Al_2O_3$. Our transparent CTFT inverter well operate under 3 V, demonstrating a maximum voltage gain of ~20, good electrical and even photoelectric stabilities. The device transmittance was over 60 % and this type of transparent inverter has never been reported, to the best of our limited knowledge.

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