• 제목/요약/키워드: escape rate

검색결과 120건 처리시간 0.026초

장애인의 실업탈출 결정요인에 관한 연구 (Factors Affecting on the Unemployment Hazard Rate of the People with Disabilities)

  • 남정휘;최영
    • 재활복지
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    • 제17권4호
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    • pp.127-149
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    • 2013
  • 본 연구는 실업의 장기화, 장애차별현상 등 장애인노동시장 문제의 해법을 모색하기 위해 장애차별변수를 활용하여 장애인의 실업탈출과 이와 관련된 요인을 살펴보고자 하였다. 이를 위해 장애인고용패널조사의 3차~5차의 자료를 활용하여 자료를 구성하고 실업탈출(취업)과 관련하여 사건사 분석을 실시하였다. 분석결과는 다음과 같다. 첫째, 실업기간에 따른 실업탈출가능성의 변화를 생명표 분석을 통해 분석한 결과, 최장 실업기간(25개월)까지 실업상태로 남아 있는 비율은 90.5%이고, 노동시장에 진입한 비율은 9.5%에 불과한 것으로 나타났다. 전반적으로 실업유지율은 매우 높게 나타났고, 실업탈출 가능성은 12개월까지 증가하다가 그 이후부터는 감소하는 추세를 보이는 것으로 나타났다. 둘째, 실업탈출에 영향을 요인을 파악하고자 콕스비례해저드모형을 이용하여 분석한 결과, 남성일수록, 비수급가구일수록, 경증일수록, 직장차별경험이 없을수록 실업탈출 가능성이 높아지는 것으로 나타났다. 이러한 결과를 통해 장애인의 실업탈출(취업)을 촉진하기 위해서는 우선 고용상에 발생하는 장애차별을 해소할 수 있는 장애인차별금지제도를 보다 강화해야 하며, 기초수급 장애인들의 근로를 유인할 수 있도록 현행 국민기초생활보장제도를 보완할 필요성이 있음을 제안하였다. 추가적으로 실업탈출에 어려움이 있는 여성장애인, 중증장애인 등과 같이 정책대상을 보다 세분화하여 개별욕구와 특성에 부합하는 고용서비스의 필요성을 제안하였다.

FIRES IN REAL SCENARIOS

  • Ghosh, B-K
    • 한국화재소방학회:학술대회논문집
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    • 한국화재소방학회 1997년도 International Symposium on Fire Science and Technology
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    • pp.439-449
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    • 1997
  • Studies have been carried out to determine the effect of sprinklers on fires typical of a number of occupancies including simulated of office furniture, supermarkets, carpet displays, libraries, video stores and liquor stores. After surveys of actual fire loads, the experiments were conducted in a specially designed sprinklered fire-calorimeter with a collecting hood 6 m x6 m leading to a vertical duct 1 m in diameter. Details of the rig are given elsewhere [1]. Only well ventilated fires were studied. Rate of heat release and production of various toxic chemicals were monitored during the tests. Both sprinklered and unsprinklered fires were used. The results were used to establish the unsprinklered burning behaviour and the fire-control effects of sprinklers. Before sprinkler operation, the rate of fire growth could be modelled as 12_fires as given in NFPA 92B (1991 Edition) [2]. It was found that operation of sprirnklers controlled but did not extinguish the fires. This was expected as parts of the fire load were shielded from the spray. Also there were significant increases in the concentration of carbon monoxide when the sprinklers operated. Sprinklers had little effect on the concentrations of other toxic products measured. The results from the tests were extrapolated to large single storey buildings for the same occupancy classes and the results used to compare the required and the available escape times for different occupancies, particularly whether the use of sprinklers would improve the chances of escape from those premises. It was found that in most of the cases studied, adequate escape times will be available without any special measures. For very rapid fire growths, however, special measures, such as availability of trained staff may be needed. Standard response sprinklers will have little impact.

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FORMATION OF LINE PROFILES BY THE WINDS OF EARLY TYPE STARS

  • KANG IVIIN-YOUNG;KIM KYUNG-MEE;CHOE SEUNG-URN
    • 천문학회지
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    • 제29권spc1호
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    • pp.263-264
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    • 1996
  • We have solved the radiative transfer problem using a Sobolev approximation with an escape probability method in case of the supersonic expansion of a stellar envelope to an ambient medium. The radiation from the expanding envelope turns out to produce a P-Cygni type profile. In order to investigate the morphology of the theoretical P-Cygni type profile, we have treated $V{\infty},\;V_{sto},\;{\beta}$ (parameter for the velocity field), M and $\epsilon$ (parameter for collisional effect) as model parametrs. We have found that the velocity field and the mass loss rate affect the shapes of the P-Cygni type profiles most effectively. The secondarily important factors are $V{\infty},\;V_{sto}$. The collisional effect tends to make the total flux increase but not so .much in magnitude. We have infered some physical parameters of 68 Cyg, HD24912, and $\xi$ persei such as V$\infty$, M from the model calculation, which shows a good agreement with the observational results.

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FORMATION OF LINE PROFILE: SEI METHOD

  • CHOE SEUNG-URN;KANG MIN-YOUNG;KIM KYUNG-MEE
    • 천문학회지
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    • 제29권2호
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    • pp.93-105
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    • 1996
  • We have solved the radiative transfer problem using a Sobolev approximation with an escape probability method in case of the supersonic expansion of a stellar envelope to an ambient medium. The radiation from the expanding envelope turns out to produce a P-Cygni type profile. In order to investigate the morphology of the theoretical P-Cygni type profile, we have treated $V_\infty,\;V_{sto},\;\beta$ (parameters for the velocity field), it and E(parameter for collisional effect) as model parameters. We have investigated that the velocity field and the mass loss rate affect the shapes of the P-Cygni type profiles most effectively. The secondarily important factors are $V_\infty,\;V_{sto}$. The collisional effect tends to make the total flux increased but not so much in magnitude. We have infered some physical parameters of 68 Cyg, HD24912, and $\xi$ persei such as $V_\infty,\;M$ from the model calculation, which shows a good agreenment with the observational results.

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역사적으로 들여다 본 고환율, 그리고 기술개발 (Higher Exchange Rate through The history, and Technical Development)

  • 김규린
    • 기술사
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    • 제42권1호
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    • pp.39-43
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    • 2009
  • At the moment, Korea has faced a big challenge to an economic crisis due to higher exchange rate against foreign currency. In order to escape from this type of economic crisis quickly, our professional engineers have to do every endeavor to develop the basic material industries so that we could produce our product with a competitive price. If we were not victorious in this of borderless game, we would be hungry again very shortly.

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우리나라 인구정책방향의 재음미 (Review of Population Policy in Korea)

  • 이규식;김택일
    • 한국인구학
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    • 제11권1호
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    • pp.32-49
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    • 1988
  • The social conditions in Koreas until 1950s were similar to the model phenomena of low level eqilibrium trap which was named by Prof. Nelson, with the continuation of high population growth rate and low economic growth rate. To escape from the trap, Korean government adopted two different policies, one is economic development plans and the other is family planning programs. Theses policies were successful in both increasing the national products and decreasing the population growth rate. In 1985 per capita GNP increased to over two thousand dollars, fertility rate reduced to replacement level(2.1) and unemployment rate was stabilized at 4 percent level. From various prospects, we were successfully escaped from the Malthusian trap and many economists, who studied developed countries, belive that population growth has positive effects on technological progress, economies of scale, specialization, individual attitude on work, and economic growth. Therefore we need to reexamine the anti-natalistic population policy of Korea in this situation.

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Duckweed as a Protein Source for Fine-Wool Merino Sheep: Its Edibility and Effects on Wool Yield and Characteristics

  • Damry, J.V. Nolan;Bell, R.E.;Thomson, E.S.
    • Asian-Australasian Journal of Animal Sciences
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    • 제14권4호
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    • pp.507-514
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    • 2001
  • Two experiments were carried out to investigate whether duckweed is useful as a dietary protein source for fine-wool Merino sheep and to evaluate its effects on wool yield and characteristics. In Experiment 1, the sheep were given one of three maintenance diets consisting of oaten chaff (520-700 g/d) supplemented with 16-32 g crude protein/d in the form of fresh (1 kg/d) or sun-dried (50-100 g/d) duckweed. Each ration was estimated to provide 5.4 MJ (1.3 Mcal)/d of metabolisable energy (ME). The sheep readily ingested the fresh or dried duckweed. None of the wool measures (yield, rate of fibre elongation, fibre diameter) differed (p>0.05) between dietary treatments. In Experiment 2, oaten-chaff-based diets (800 g/d) supplying 6.5-7.2 MJ (1.6-1.7 Mcal)/d of ME were supplemented with iso-nitrogenous amounts (4-5 g N) either of urea (8 g), cottonseed meal (60 g) or dried duckweed (100 g). In this experiment, the rate of wool fibre elongation, thought to be related to intestinal amino acid absorption, was lower (p<0.05) for sheep given the oaten chaff/urea diet than for those given either oaten chaff/cottonseed meal or oaten chaff/duckweed for which the rates did not differ (p>0.05). Fibre diameter, which ranged from 16.0-16.7 mm, did not differ (p>0.05) between diets, but tended to be lower on the oaten chaff/urea diet so that volume of wool produced was also significantly lower (p<0.05) on this diet than on the diets containing duckweed or cottonseed meal. Rumen ammonia concentrations at 4.5 and 7.5 h after feeding were higher (p<0.05) for sheep given the oaten chaff/urea diet than for those given the other two diets. A comparison of the rumen ammonia concentrations, wool growth rate and predicted flows of amino acids from the rumen of sheep supplemented with duckweed rather than cottonseed meal suggested that duckweed is a valuable source of 'escape protein' for ruminants.

炭化水素內에서의 Alkyl Iodides의 光分解에서 $II^{131}$과 Alkyl Iodides 間의 交換反應 (Exchange Reaction Between Alkyl Iodides and $II^{131}$ in the Photolysis of Alkyl Iodides in Hydrocarbon)

  • 최재호
    • 대한화학회지
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    • 제10권1호
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    • pp.43-45
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    • 1966
  • The rate of exchange of I atom between alkyl iodides(ethyl or methyl iodide) and $I_2$ in n-hexane have been determined using $II^{131}$. It is found that the escape of $CH_3$ radicals from a solvent cage is faster than $C_2H_5$ radicals and that photolysis of $C_2H_5I$ is almost identical to that in the case of $CH_3I$.

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The $Schl\ddot{o}gl$ Model with the Second Order Transition Under the Influence of a Singular Multiplicative Random Force

  • Kyoung-Ran Kim;Dong J. Lee;Cheol-Ju Kim;Kook Joe Shin
    • Bulletin of the Korean Chemical Society
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    • 제15권8호
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    • pp.631-636
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    • 1994
  • For the Schlogl model with the second order transition under the influence of the multiplicative noise singular at the unstable steady state, the detailed discussions are presented for various kinds of stochastic phenomena, suchas the effects of parameters on stationary probability distribution, noise-induced phase transitions and escape rate.