• Title/Summary/Keyword: TURNING PHASE

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Development of the Emergency Vehicle Preemption Control System Based on UTIS (UTIS 기반의 긴급차량 우선신호제어 시스템 개발)

  • Hong, Kyung-Sik;Jung, Jun-Ha;Ahn, Gye-Hyeong
    • The Journal of The Korea Institute of Intelligent Transport Systems
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    • v.11 no.2
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    • pp.39-47
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    • 2012
  • In this paper, we have developed the system of emergency vehicle preemption signal control based on UTIS(Urban Traffic Information System) which have been deployed and operated in the national capital area. It considered the turning direction(through or left turn) of emergency vehicle at the signalized intersection in order to provide the consecutive progression of emergency vehicle and minimize the control delay of passenger cars. we adopted several EVP control modes such as phase insertion and phase adjustment mode. Also, we evaluated the possibility of field implementation via simulation analysis using CORSIM RTE(Run Time Extension) based HILS(Hardware In the Loop Simulation). We expect that the result of this research contribute to providing the right-of-way to emergency vehicle in this country.

The Proposal for Improvement of Legal System for the Persons with Disabilities (장애인복지 관련 법제의 발전방향)

  • Woo, Jooh-Hyung
    • Journal of Legislation Research
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    • no.41
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    • pp.125-170
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    • 2011
  • In Korea, the evolution of welfare for people with disabilities can be divided largely four stages. The first phase is before 1981, the second is from 1981 to 1988, the third is from 1989 to 2006 and the fourth phase is from 2007 to now. In the first phase people with disabilities were considered as ones of charity. In the second period the welfare ideal for people with disabilities was appeared. In the third, the framework of welfare system for people with disabilities was formed and welfare services began to be expanded. The fourth phase has been the time to secure human right and social services for people with disabilities. In Korea, for people with disabilities, 2007 was the year of historical turning point. "The Act of Prohibition on Disability Discrimination and Remedy for Right"was built that year and became effective the next year. Also "The Special Education Act for People with disabilities" was enacted newly. "The Disabled Welfare Act" was amended for the change of welfare paradigm. The change is introduction of Independent Living. After 2007 Korean legal systems for people with disabilities have been improved largely.

Evaluation of Crack Propagation in Silicon Anode using Cohesive Zone Model during Two-phase Lithiation (접착영역 모델을 사용한 2상 리튬 이온 충전 시 실리콘 음극 전극의 균열진전 해석)

  • Kim, Yong-Woo;Han, Tong-Seok
    • Journal of the Computational Structural Engineering Institute of Korea
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    • v.32 no.5
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    • pp.297-304
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    • 2019
  • In this research, crack propagation in a silicon anode during two-phase lithiation was evaluated using a cohesive zone model. The phase transition from crystalline silicon to lithiated silicon causes compressive yielding due to the high volume expansion rate. Li-ion diffuses from the surface of the silicon to its core, and the complex deformation mechanisms during lithiation cause tensile hoop stress along the surface. The Park-Paulino-Roesler (PPR) potential-based cohesive zone model that guarantees consistent energy dissipation in mixed-mode fracture was adopted to simulate edge crack propagation. It was confirmed that the edge crack propagation characteristics during lithiation from the FEM simulation results coincided with the real experimental results. Crack turning observed from real experiments could also be predicted by evaluating the angles of maximum tensile stress directions.

Effect of Walk Training on Physical Fitness for Prevention in A home Bound Elderly (걷기 훈련이 재택 노인의 낙상방지 체력에 미치는 영향)

  • Choe, Myeong-Ae;Jeon, Mi-Yang;Choe, Jeong-An
    • Journal of Korean Academy of Nursing
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    • v.30 no.5
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    • pp.1318-1332
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    • 2000
  • The purpose of this study was to determine the effect of walk training on leg strength, flexibility, postural stability, balance and gait in home bound elderly women. Eighteen elderly women of the experimental group aged between 70 and 90 years image who have normal vision, hearing and Romberg test. They participated in the 12 week walk training. The subjects of the experimental group practiced walk training 3 times a week for during 12 weeks. During the 40 minute workout, the subjects practiced 5 minutes of warming-up exercises, 30 minutes of conditioning exercises and 10 minutes of a cool-down exercise. The intensity for the conditioning phase was determined by subject' heart rates, which ranged from 60% to 70% of age-adjusted maximum heart rates. The body composition, leg strength, flexibility, postural stability, balance and gait were measured prior to and after the experimental treatment. The body fat, lean body mass, leg strength (ankle dorsiflexor, plantarflexor, inversor and eversir, knee flexor, extensior), flexibility (range of motion of ankle dorsiflexion, plantarflexion, inversion and eversion), and postural stability of the experimental group were significantly greater than those of the control group. Duration of standing on the right foot and that of standing on the left foot of the experimental group was greater than that of the control group. Total balance scores of the experimental group were significantly higher than those of the control group. Among 13 items for balance, the scores of experimental group in balance with eyes closes, turning balance, sternal nudge, neck turning, one leg standing balance and back extension were higher than those of the control group. Total scores of gait of the experimental group were significantly higher than those of the control group following the walking training. Scores of experimental group in step height, step length and walk stance while walking among 9 items for gait were significantly higher than those of the control group. The results suggest that walk training can improve physical fitness for prevention in home bound elderly women.

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Oxygen sensor for the low temperature-measurement using yttria stabilized zirconia(YSZ) electrolyte and Ag electrode (YSZ 전해질과 은 전극을 이용한 저온 산소센서에 대한 연구)

  • Yang, Young-Chang;Park, Chong-Ook
    • Journal of Sensor Science and Technology
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    • v.15 no.2
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    • pp.97-101
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    • 2006
  • Silver electrode having a high Electrocatalytic activity is oxygen-permeable electrode, in which oxygen ad-atoms are adsorbed and moved toward YSZ electrolyte by bulk diffusion. It is the different point in comparison to usual porous electrodes, especially platinum, which react with oxygen only in TPBs(Three Phase Boundaries). Also ad-atoms at TPBs of Pt are diffused to YSZ electrolyte by interfacial diffusion mechanism. These properties were used for turning down the operating temperature of YSZ from over $600^{\circ}C$ to below $450^{\circ}C$. The different heat-treatment temperature between a working electrode and a reference electrode suppresses the formation of silver oxides and reduces a volatility of Ag as well. Above all, these own characteristics and special processes of Ag improved a long-term stability of a oxygen sensor.

A Study on the Swept Path Width for the Bimodal Tram (바이모달 트램 곡선 선회폭에 관한 연구)

  • Moon, Kyeong-Ho;Chang, Se-Ky;Mok, Jai-Kyun
    • Proceedings of the KSR Conference
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    • 2011.10a
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    • pp.51-56
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    • 2011
  • The train travels on the track and, thus, the rear wheels precisely follow the paths of the front wheels. On the contrary, in the vehicles running on the road like automobiles, buses and trucks, the front wheels try to drag the rear ones toward them and across the inside of the curve. Off-tracking is defined as the radial offset between the path of the centerline of the front axle and the path of the centerline of the following axle. In the case of the bimodal tram with AWS(all wheel steering), the off-tracking decrease but the rear swing-out values increase because of the rear steering at the reverse phase angle. Thus, in order to determine the swept path width, maximum road width at the minimum turning radius, off-tracking and swing-out should be considered for the bimodal tram. In this paper, trajectory simulations were carried out for the various condition such as front steering, front and rear steering and suppression of swing-out to optimize the swept path width.

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코팅 부동화 측정장치개발 및 부동화시간에 관한 연구

  • ;D. W. Bousfield
    • Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference
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    • 2001.11a
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    • pp.42-42
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    • 2001
  • The rate of coating consolidation influences the operation of several coating methods and the final quality of the coating layer. The rate of coating consolidation is characterized with a dynamic gloss meter at short times for a thin coating layer applied to the base sheet of interest. During the coating consolidation process, the laser gloss meter response curve exhibits two critical turning points that indicate the two coating immobilization points defined by the traditional methods. Five base sheets with several different coating suspensions are characterized. A model is proposed to estimate the rate of consolidation based on physical properties of the coating suspension, the base paper, and the liquid phase of the coating. The paper properties, especially the contact angle, are found to be an important factor in determining rate of consolidation. The model predicts the correct trends for the different coating suspensions and base sheets. The test method, along the model, can be used to determine the filtercake resistance of the coating layer for a thin and rapidly formed filtercake.

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Studies on the Amounts of Water Addition in JeungPyun Dough (증편 반죽의 가수조건에 관한 연구)

  • Park, Young-Sun;Choi, Bong-Soon
    • Korean journal of food and cookery science
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    • v.10 no.4
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    • pp.334-338
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    • 1994
  • When total amount of water, including Takju(15%, w/w), was added differently in the ranges of 30 to 60% of the weight of rice flour, the specific volume of Jeungpyun had the highest value in the sample with 45% of water added. The Jeungpyun with 45% of water added also showed the best acceptability by means of taste evaluation. Dough viscosity was decreased by two stages of rapid and slow phase in logarithmic mode as total amount of water was increased and the turning point was observed at 45% of water.

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Analysis of Multiple Step-Index Waveguide by the WKB Approximation (WKB 근사를 이용한 다중 계단형 광도파로의 해석)

  • Seo, Jeong-Hun;Lee, Se-Ho;Lee, Byeong-Gwon;Kim, Chang-Min
    • The Transactions of the Korean Institute of Electrical Engineers C
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    • v.48 no.2
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    • pp.141-146
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    • 1999
  • The eigenvalue equations of multiple waveguides with step-index profile are derived by using the WKB theory. Phase changes unique to step-index discontinuity areintroduced when applying the WKB connection formula to turning points. The transfer matrix method is employed for the analysis of multiple structure and the derived eigenvalue equation are represented in the recursive form. The results by the WKB are compared with those by the FEM for a three-waveguide coupler.

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Inclusive Innovation in India: Historical Roots

  • Krishna, Venni V
    • Asian Journal of Innovation and Policy
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    • v.6 no.2
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    • pp.170-191
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    • 2017
  • Inclusive innovation refers to different types and forms of innovation activities or performance by which we can get more for lesser cost and which could cater and meet the needs and demands of more people. The essence of inclusive innovation is to help poor, marginalized and underprivileged sections of society to improve their livelihoods and enable them to climb up the socio-economic ladder. In the current phase of economic slowdown, increasing unemployment and inequalities, World Bank, OECD and various governments are turning towards inclusive innovation as a new source of optimism or even as a new innovation strategy. Whilst it is being reframed or packaged as a novel or a new strategy, one can trace its historical roots to the AT movement and the Gandhian ideas of economy and society in the 1940s and 1950s. These ideas have inspired and influenced a range of individuals, institutions and civil society groups in inclusive innovation.