• Journal of Bio-Environment Control
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• v.30 no.4
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• pp.359-366
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• 2021

This study aimed to develop and verify the smart human resource management (HRM) program in a large scale greenhouse. HRM program delivers detailed work orders to workers and gathers work results by mobile phone application. Greenhouse managers can monitor the workload, work speed, quality of employee by HRM program and can analyse performance easily. Greenhouse Managers can set the work speed including 'twisting', 'trimming' and 'harvesting' in a greenhouse. It makes planning work schedule and assigns resources to each specific job easier. Therefore, the manager can arrange the number of employees to promote work performance and also easy to estimate the labor shortage. Greenhouse managers can evaluate the adequacy of the number of employees through job performance analysis by period and adjusts the supply/demand ratio of regular and non-regular employees. The HRM program can improve work efficiency by announcing the real-time work performance of all employees on a monitor screen to induce competition among workers and re-educate unripe employees who accomplish behind average to improving work skills.

• Environmental and Resource Economics Review
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• v.17 no.4
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• pp.775-812
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• 2008

This paper provides a theoretical approach to the New Zealand's Catch-Balancing Regime (CBR) with a reporting requirement under the Individual Transferable Quota (ITQ) system. The enforcement strategy depicted draws on recent literature regarding practical applications of the Revelation Principle. New Zealand's use of CBR-specific instruments such as deemed values, remains to be improved. However, some of its features can constitute a valuable example for regulators seeking to improve their methods of dealing with issues as bycatch or overfishing in order to maintain Total Allowable Catch (TAC) levels under emerging ITQ systems. The enforcement strategy analyzed has the potential to provide a more sustainable and efficient management of the fish stock, reduce discarding and stabilize monitoring costs, while improving the level of reporting compliance.

• The Journal of the Korea Contents Association
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• v.17 no.8
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• pp.382-395
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• 2017

This study tries to analyze whether the Earned Income Tax Credit (EITC), which was modified in 2011, has the effect of work incentive. In this sense, by establishing the 8th Wave of Korea Welfare Panel Study (2013) and the 9th Wave (2014), Furthermore, in order to overcome the methodological limit, the results of two-party analysis method will be compared by firstly carrying out multiple regression analysis and then performing propensity score matching analysis. The 535 households out of 6,025 were selected. The following are the results of multiple digression analysis and propensity score matching analysis. First, there was no statistically meaningful relationship with regard to the perception of the EITC. Second, there was a statistically meaningful result in the reduction of working hours with regard to whether a household received labor incentive or not. The study found that the revised EITC is not providing incentives which stimulates the will to work.

• Korean journal of applied entomology
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• v.30 no.2
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• pp.124-129
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• 1991

This study investigated seasonal occurrence and daily flight activity using synthetic sex pherom mone and injury characteristics of 야et armyworm, Spodoptera exigua in Chonnam area of K Korea in 1990. Male adults were attracted to phermone trap from mid-June to late November w with the peaks at mid-late August, mid-late September and early-mid November in vinyl i house and also were attracted from mid October to late November in field. Primary peak of occurrence in vinyl house was 20 days sooner than field. It seems to have 6 generations a year in C Chonnam region based on the estimation of larval biomass. Daily male flight was active from m midnight to before sunrise with the peak at 4-6 A.M .. In injury characteristics at various host plants, damage was great in early growing stage at below 10 cm of plant height in Allium fistulsum. Chrysanthemum morifolium was damaged at mostly upper part of leaves reaching to m the extent up to 70%. In case of Gypsophila paniculata, plants injured at early growing stage do n not grow and flower normally.

• Korean Journal of Organic Agriculture
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• v.20 no.4
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• pp.643-654
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• 2012

We conducted the experiment in order to evaluate the control effect of whitefly using the sticky trap. Both Bemisia tabaci and Trialeurodes vaporariorum were more attracted to yellow sticky trap than white or blue colored traps. When yellow sticky traps were installed in different height around tomato, catches of B. tabaci were not significantly different among the traps and catches of T. vaporariorum on the traps in the upper position were more than lower position. T. vaporariorum was more attracted to trap when host plant is smaller. The attracted number to yellow sticky traps were not significantly different between whiteflies (B. tabaci and T. vaporariorum) and their parasitoids (Encarsia formosa and Eretmocerus mundus). Yellow sticky trap reduced population density of both B. tabaci and T. vaporariorum by more than 80% on tomato nursery in a screen cage. Population density of whiteflies in greenhouse installed yellow sticky traps was less than one third of that in untreated greenhouse.

• Journal of Navigation and Port Research
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• v.34 no.3
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• pp.235-242
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• 2010

In recent years, the busan port is now facing a serious crisis. Exterally, though worldwide economics depression is a serious factor, cuttthroat competition between north port and new port since new port open lead to decrease terminal profitability and busan port image. The essential cause is crowed with terminal operators. therefore, This paper empirically analyze the container terminal integration factor solving busan port problem affecting the competitiveness performance. According to research results, integration between operators will be to acomplish global terminal, and so, contribute to increase service power, port productivity, cargoes and to be hub-port at the north-east asia. These results show political suggestions for importance of repid integration to improve busan port's competitiveness.

• Plant Journal
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• v.14 no.2
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• pp.39-44
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• 2018

In this study, I analyzed the effects on stabilizing the draft system, boiler efficiency when changing excess air ratio under 870 MW load limit operation condition in a large capacity coal fired power plant and decided optimum excess air ratio. It is positively necessary to choose adequate excess air ratio for stabilizing draft system because air pre-heater pressure drop and induced draft fan first stall margin are changing when adjusting excess air ratio. This study therefore, measured air pre-heater pressure drop, induced draft fan first stall margin, boiler efficiency, loss and has chosen adequate excess air ratio adjusting excess air ratio from 1.153 to 1.127. So it is recommended that the operation point needs to be changed to 1.127 that is not only to decrease air pre-heater pressure drop and to stabilize draft system and to secure stall margin but also to maintain boiler efficiency to equivalent level.

• Environmental and Resource Economics Review
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• v.18 no.4
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• pp.767-785
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• 2009

This paper studies the effect of industrial waste water effluent charge reform. The goal of the present effluent charge system is to use environmental resources in an efficient way by charging the cost for removing emitted water pollutants. However, the present system is a type of regulation instead of providing economic incentives to the industry. That is, if a firm emits pollutants greater than the limit, it has to pay an amount greater than the cost of cleaning them taking into account the amount of waste water discharged, region, the number of violation and the level of density of pollutants. However, the excessive fees have resulted in the lowest ratio of revenue-to-effluent charge among all environmental charges. The paper estimates the effect of the change in effluent fee and revenue when the present effluent charge system is converted to one that offers economic incentives. The results show that the amount of waste water effluent charge is about four times larger than the estimated environmental cleaning cost. In addition, the results show that by modifying the effluent charge system, the ratio of revenue to effluent charge can be raised.

• 한국사회정책
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• v.19 no.2
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• pp.69-97
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• 2012

This study has sought to analyze factors affecting work and work preference of older adults at national and individual level. A few theoretical hypotheses such as economic need versus job opportunity (or employability), attitude toward paid work, pull effect versus push effect were tested for citizens in eighteen OECD countries with International Social Survey dataset(2005) using multi-level analysis. Main findings are as follows. First, most older adults wanted to work regardless of the socio-economic status, which implies that non-work of older adults would be due to involuntary constraint rather than voluntary choice. Second, there existed class inequality in that the higher class tended to involve paid work more than the lower class did among 55-64 age group. Third, the push factor such as part-time employment ratio, rather than the generosity of social security, explained the work and retirement patterns better. In conclusion, at least from the comparative perspective, the main problem of older adults' work seems to be of labour demand rather than of labour supply, to be of labour market structure and work opportunity rather than of the pull factor.

• Journal of Korea Fair Competition Federation
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• no.96
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• pp.8-13
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• 2003

카르텔 규제에서 가장 중요하고도 어려운 문제는 위법행위를 적발하고 이를 뒷받침하는 증거를 확보하는 일이다. 카르텔에 대한 법 집행의 실효성을 제고하기 위해서는 반드시 카르텔을 효과적으로 적발$\cdot$입증할 수 있는 조사수단을 갖추어야 하는바, 경쟁당국의 사법경찰권은 카르텔에 대한 법 집행상의 문제를 극복하기 위한 주요 수단이 된다. 한편 카르텔에 대한 강제 조사권은 카르텔의 적발$\cdot$처벌확률을 높임으로써 카르텔 행위자의 자진신고 및 조사협조의 유인을 강화하여 leniency program의 실효성 제고에 기여할 수 있다. 그렇지만 성격상 남용의 우려를 야기하므로 사법경찰관 제도는 반드시 선진국 수준의 엄격한 요건과 절차에 따라 운영되어야 할 것이다.