• Korean Journal of Social Welfare
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• v.63 no.3
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• pp.187-211
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• 2011

This study examines the effects of active labor market policy on unemployment by pooled cross-section time series analysis utilizing panel data of 18 OECD countries, and seeks implications for improvements of the Korean active labor market policy. The results of the analysis are summarized as follows. First, active labor market policy negatively affects unemployment rates. Second, vacational training program among three major active labor market programs has a negative effect on unemployment rates. Third, employment service program and employment subsidy program have partially negative effects on unemployment rates. The implications for the Korean active labor market policy are as follows. First, it is necessary to expand and systematize active labor market policies. Second, vocational training programs should be systematized and professionalized according to labor demand. Third, employment subsidy programs need to be planned and carried out under the condition of minimizing a substitution effect, a displacement effect and a deadweight loss effect. Fourth, employment service programs need to be developed and carried out under the consideration of not only the reduction of unemployment rates but also the prevention of re-unemployment, mitigation of income inequality and improvement of productivity.

• The Korean Journal of Applied Statistics
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• v.25 no.1
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• pp.45-54
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• 2012

Published employment statistics do not provide enough information about the relationship of unemployment and economic and business conditions. This study investigates long-run equilibrium relations and short-run adjustment process of unemployment and discouraged unemployment with major price variables in the business coincident and lagging framework. Speed of adjustment from short-run disequilibrium to long-run equilibrium is found to be relatively faster for discouraged unemployment that appears more responsive to changes in most of explanatory variables. Discouraged unemployment is found to reflect reality and suggested to be a more meaningful statistical index.

• 주택과사람들
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• s.168
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• pp.46-58
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• 2004

>>> 시장여건 분석 $\blacktriangleright$ 주택수급 상황 $\cdot$ 신규입주물량은 46만호로 올해보다 크게 감소하나 아파트입주물량은 32만호로 증가. 특히, 주거용 오피스텔 입주가 본격화되면서 전체적으로 공급과잉구조로 전환 $\cdot$ 가수요는 물론 실수요도 위축되면서 미분양 증가, 입주후 공가가 주요이슈로 대두 $\blacktriangleright$주택정책 여건 $\cdot$양도세,재산세 중과, 주택거래신고제, 종합부동산세 등 10.29종합대책의 후속조치가 본격화되고, 토지거래허가대상 확대 및 개발이익환수 등 2차 대책 시행가능성 상존 $\cdot$ 분양원가 공개, 후분양제 도입, 신행정수도 이전계획의 향방에 따른 불안요인도 내재 $\blacktriangleright$거시경제 전망 $\cdot$ 경기회복으로 금리가 상승세로 돌아설 경우 투자수요 위축 불가피 $\cdot$ 경제성장률이 $5\%$대로 개선되고 시중유동성도 풍부하나, 가계부실과 실업 증가로 수요증가효과는 제한적 >>> 향후 시장전망 $\cdot$ 저금리기조와 각종 개발호재에 따른 시장불안요인은 상존하나 정부의 강력한 투기억제 의지를 감안할 때 단기 조정 후 추가 하락하는 전형적인 경기후퇴국면에 진입할 전망 $\cdot$매매가격은 서울아파트가격이 크게 하락하면서 전국평균-$2\%$ 내외의 하락률을 보이고, 전세가격도 국지적 불안 가능성은 있으나 $-1\%$ 내외의 하향안정세가 이얼질 전망. 분양시장은 청약률 둔화와 미분양 증가의 침제양상이 이어지면서 주택건설실적도 각종 사업여건 악화로 50만호 안팎에 머물 것으로 예상. 지가상상률은 투기대책과 주택시장 위축으로 올해보다는 소폭 낮아지나 각종 개발 호재에 힘입어 개발예정지역을 중심으로 $3\%$ 내외의 높은 상승세가 지속될 전망

• Journal of the Korean Orthopaedic Association
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• v.56 no.5
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• pp.433-439
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• 2021

The definitive and effective method for tetanus prevention has contributed to decreased incidence and mortality of tetanus infections in developed countries. On the other hand, there has been a recent increase in incidence due to the lack of awareness of the disease and lack of adherence to preventive measures. Tetanus infections can be fatal. Therefore, prevention must be the utmost priority, followed by aggressive surgical management along with supportive care. The authors present a case of a 59-year-old male patient diagnosed with a generalized tetanus infection from a foot injury. The patient recovered successfully after aggressive surgical debridement and amputation of the infected toe at the metatarsal level, followed by two months of supportive care.

• Journal of Internet Computing and Services
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• v.8 no.5
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• pp.125-132
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• 2007

Transmission mechanisms that include an available bandwidth estimation algorithm and a packet loss differentiation scheme, in general, exhibit higher TCP performance in wireless networks. TCP New Jersey, known as the best existing scheme in terms of goodput, improves wireless TCP performance using the available bandwidth estimation at the sender and the congestion warning at intermediate routers. Although TCP New Jersey achieves 17% and 85% improvements in goodput over TCP Westwood and TCP Reno, respectively, we further improve TCP New Jersey by exploring improved available bandwidth estimation, retransmission timeout, and recovery mechanisms. Hence, we propose TCP New Jersey PLUS (shortly TCP NJ+), showing that under 1% packet loss rate, it outperforms 3% by TCP New Jersey and 5% by TCP Wes1wood. In 5% packet loss rate, a characteristic of high bit-error-rate wireless network, it outperforms other TCP variants by 19% to 104% in terms of goodput even when the network is in bi-directional congestion.

• The Journal of the Korea Contents Association
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• v.10 no.2
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• pp.35-42
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• 2010

The increasing regular medical check up rate for early diagnosis in disease has increasing sleep endoscopy rate because of reduction with discomfort. The purpose of this study was to determine the number of recovery bed as increasing sleep endoscopy rate using check up time, waiting time & recovery time at a general hospital in Seoul. This study was analyzed using ARENA 10.0 program. At present and as increasing of sleep endoscopy rate 10%, 20% was increased recovery time, waiting time & the rate of bed inflection. So at present, the number of recovery bed has to increase for client's safety and as increasing of sleep endoscopy rate 10%, 20% has to increase 3 and then waiting time decreased in 2 minutes.

• Journal of the Korea Concrete Institute
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• v.13 no.3
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• pp.195-205
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• 2001

This Paper describes a numerical method to evaluate the flexural strength of reinforced concrete members exposed to fire. An analytical method is developed for the moment-curvature relationship for the cross section which is subjected to high temperature. The method performs heat-transfer analysis for the cross sections and subsequently performs numerical analysis using the stress-strain relationships of concrete and reinforcing steel in various heat conditions. The results of the numerical studies are ; 1) the residual flexural strength exposing at high temperature is affected by the heating time, the depth of concrete cover and reinforcement ratio, 2) the residual flexural strength after exposed at high temperature is recovered of its original strength at minimum ratio of reinforcement, while members having half of maximum ratio and maximum ratio of reinforcement do not recover its original strength, 3) furthermore, the concrete may reach its maximum capacity before reinforcement yields in reinforced concrete members having maximum ratio of reinforcement.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.54 no.2
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• pp.218-224
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• 2009

In organic fanning systems, integration of cover crops into cropping system are recommended to improve the soil quality, to prevent soil erosion, and to provide biological control of weeds. The aim of the present study was to evaluate the optimal seeding dates of major cover crops. To know optimal seeding dates, crimson clover, alfalfa, rye and hairy vetch were sown on 20. Sep., 27. Sep., 4. Oct., 11. Oct., 18. Oct., 25. Oct. Rye could germinate and grow well in all the tested sowing dates. Hence, it was concluded that the sowing of rye could be conducted later in fall or more earlier in spring than any other cover crops tested in this study. Growth and ground covering capacity were significantly decreased by late sowing in alfalfa and crimson clover. For safe overwintering, alfalfa and crimson clover should be sown before late September. Similarly, field emergence of hairy vetch was found to be sensitive to soil temperature, however, its growth and ground covering capacity after overwintering was enough to compensate the delay in sowing. Germination tests in laboratory revealed that hairy vetch grew faster at $25^{\circ}C$ compared to $20^{\circ}C$. The result suggested that germination and growth rate of hairy vetch was rapidly decreased at low temperature. Therefore, it is recommended that hairy vetch should be sown as soon as possible in September for improving stand establishment after overwintering.

• Environmental and Resource Economics Review
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• v.19 no.2
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• pp.283-301
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• 2010

This study estimated the paper demand and supply using VAR model. And the variance decomposition and impulse response were analyzed using the model. In the model of paper demand, the own price change accounts for about seventeen percent of variation in the demand, and the gross domestic product change accounts for about twenty eight percent of variation in the demand. And the impacts of a shock to the own price and gross domestic product are significant for about six months on the demand for paper. In the model of paper supply, the own price change accounts for about twenty nine percent of variation in the supply, and the pulp price change accounts for about twelve percent of variation in the supply. And the impacts of a shock to the own price and pulp price are significant for about six months on the supply of paper.

• Tunnel and Underground Space
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• v.33 no.1
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• pp.42-56
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• 2023

In deep geological disposal of high-level radioactive waste (HLW), the natural barrier must physically support the disposal facility and delay the movement of radionuclides for at least hundreds of thousands of years. To evaluate the long-term geological evolution of the natural barriers, it is essential to analyze the long-term behavior of rock joints, including the frictional healing behavior. This study aimed to experimentally analyze the frictional healing behavior of rock joints under hydro-mechanical (H-M) conditions through the slide-hold-slide (SHS) test. The SHS tests were performed under mechanical and H-M conditions for joint specimens of different roughness. In the H-M conditions, the frictional healing rate tended to increase, which was more evident in the specimens with large roughness. In addition, it was confirmed that the effect of the hydro-mechanical conditions was more significant when the effective normal stress acting on the joint surface was small. These results are expected to be used as fundamental data to understand the frictional healing behavior of rock joints in the natural barriers.