• 종축개량
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• v.17 no.1
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• pp.27-30
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• 1995

• Journal of KIISE:Software and Applications
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• v.33 no.7
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• pp.624-635
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• 2006

This paper applies simulated annealing algorithm to the problem of generating a plan for intra-block remarshalling with multiple transfer cranes. Intra-block remarshalling refers to the task of rearranging containers scattered around within a block into certain designated target areas of the block so that they can be efficiently loaded onto a ship. In generating a remarshalling plan, the predetermined container loading sequence should be considered carefully to avoid re-handlings that may delay the loading operations. In addition, the required time for the remarshalling operation itself should be minimized. A candidate solution in our search space specifies target locations of the containers to be rearranged. A candidate solution is evaluated by deriving a container moving plan and estimating the time needed to execute the plan using two cranes with minimum interference. Simulation experiments have shown that our method can generate efficient remarshalling plans in various situations.

• The Korea Swine Journal
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• v.11 no.1 s.113
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• pp.61-63
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• 1989

정부는 돼지오제스키병 방역정책을 변경 작년 12월 31일부터 시행키로 했다. 정부는 지금까지 시행해오던 오제스키병 발생 농장의 돼지 전두수 살처분정책을 포기하고 임상돈과 양성돈만 살처분하고 음성돈은 도축장을 지정하여 방역관 입회하에 출하하도록 했다. 정부가 개정고시한 돼지오제스키병 방역실시 요령은 다음과 같다

• The Korea Swine Journal
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• v.18 no.7 s.203
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• pp.73-75
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• 1996

오래전부터 관행처럼 되어버린 비육돈 거래시 가격정산의 기준이 되고 있는 서울지역 축산물 도매시장으로부터 집계되는 돼지고기 지육가격의 총편균이 되는 돈지육 총평균 가격을 기준으로 한 거래관행에 대하여 이를 배척하고 노폐돈이나 불량지육의 가격을 포함하지 아니하는 규격돈 지육 평균가격을 비육돈 거래시에 기준의 가격으로 삼아야 한다.

• Proceedings of the Korean Society for Food Science of Animal Resources Conference
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• 2004.10a
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• pp.160-164
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• 2004

본 연구는 사료 내 대사에너지가와 성별에 따라 재래흑돼지육의 냉장 저장 중 발생되는 물리적 변화를 구명하고자 실시하였다. pH는 저장일, 대사에너지가와 성별에 따른 차이가 나타나지 않았다. 드립감량과 가열감량은 저장기간동안 증가하고, 대사에너지가가 높을수록 낮게 나타났으며, 거세돈에서 낮게 나타났다. 저장기간동안 적색도는 감소하였지만 황색도는 증가하였다. 그리고 대사에너지가가 높을수록 적색도와 황색도 모두 높게 나타났으며, 거세돈이 미경산돈에 비해 높게 나타났다. 대사에너지가에 따른 조직감의 차이는 없었으나 거세돈이 미경산돈보다 낮은 경향을 보였다.

• Korean Journal of Soil Science and Fertilizer
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• v.43 no.5
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• pp.610-615
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• 2010

This study was conducted to evaluate fertigation effects of pig slurry (PS) and chemical fertilizer (CF) in tomato by analyzing the growth and yield, nutrient content and uptake, nutrient use efficiency, and soil characteristics in greenhouse cultivation. The treatments compared were; no-fertilizer, two different levels of PS (26 mg $L^{-1}$ and 52 mg $L^{-1}$), and a control treatment of chemical fertilizer. There was no significant difference in growth and yield between PS and CF treatments. however, yield reduction was observed in PS 26 mg $L^{-1}$ treatment. The N-utilization efficiency in CF treatment was similar to that of PS 52 mg $L^{-1}$ treatment. Nutrient utilization efficiency decreased in order of potassium (K), nitrogen (N), phosphate (P) with 29.2~43.3% in K, 15.8~36.7% in N, and 3.0~6.3% in P. In soil chemical characteristics, soil pH in PS treatment was higher than in CF treatment. In contrast, nitrate content in soil was higher in CF treatment than in PS treatment. The content of exchangeable K in soil was higher in PS and CF 52 mg $L^{-1}$ treatments. There was no significant difference in exchangeable Ca and Mg among those treatments. Therefore, it can be concluded that chemical fertilizers can be substituted by PS based on soil chemical analysis in tomato fertigation culture.

• Science of Emotion and Sensibility
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• v.16 no.1
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• pp.43-52
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• 2013

"Time versus money effect" refers to a favorable shift in consumers' responses activated by time(vs. money). In general, how people spend their time or money could reflect one's personal identity. Previous research indicates that drawing individuals' attention to time makes more effective in product satisfaction rather than money. Also, whereas because time is experienced as an experience, time activates more positive product satisfaction for experiential product rather than materialistic product, money has the reverse effect because money relates with possessions. Present study examined the effect of time and money on consumers' attitudes and decisions and the role of product type including smartphone. In experiment 1, participants evaluated their experiences or their own products(family restaurant, smartphone, premium jean). They satisfied more with their smartphones when activated by time than by money. In experiment 2, 3 image ads, a promotion image ad for each product(family restaurant, smartphone, premium jean), were offered to find the effect of time and money in promotion ads. The interaction effects between activating condition and product type were revealed on the product attitudes, product satisfaction, purchase intent, and personal connection reflecting the consistent time effect on smartphone. In addition, the main effect of the activating condition was significant which meant time activating ads were more effective than money activating ads.

• Korean Journal of Animal Reproduction
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• v.25 no.1
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• pp.79-84
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• 2001

This study was carried out to investigate the effects of spring (March~May) and summer (June~August) influencing semen characteristics, frozen-thawed sperm viability and serum testosterone concentration in Duroc boars. Results of this study were as follows: 1. There were no significant differences in the semen volume, pH and sperm concentration of Duroc boars between spring and summer. 2. Sperm motility and normal acrosome of raw semen in Duroc boars did not differ significantly between spring and summer. However, motility and normal acrosome of frozen-thawed sperm were higher in spring season than in summer season(P＜0.05). 3. Serum testosterone concentrations in Duroc boars were 2.15 ng/$m\ell$ in spring and 0.65 ng/$m\ell$ in summer. Serum testosterone concentrations in spring were higher thin those in summer (P＜0.05). 4. In conclusion, when serum testosterone concentrations in Duroc boars were higher, frozen-thawed sperm viability were higher.

• Journal of Navigation and Port Research
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• v.34 no.6
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• pp.503-509
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• 2010

Remarshaling is referred to a preparatory task of rearranging containers piled up in a stacking yard to improve the efficiency of loading. Selective remarshaling is required because the time for remarshaling known as large time-consuming task is not enough to remarshal all containers. In this research, we compare two previous researches in more objectively way: heuristic and genetic algorithm based approaches. In addition, we prove the effect of iterative reselection method on dwindling the gap between plan and execution due to the uncertainty of crane operation during execution. Simulation experiments under realistic uncertainty model show that heuristic approaches which have few computational complexity can cope with the uncertainty well when reselection interval is short, but genetic algorithm based approach has advantages when reselection interval that can ensure appropriate number of evolutions is given because of computational complexity for search.

• Korean Journal of Animal Reproduction
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• v.25 no.3
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• pp.201-206
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• 2001

This study was carried out to investigate the effects of spring (March~May) and summer (June~August) influencing semen characteristics, frozen-thawed sperm viability and serum testosterone concentration in Yorkshire boars. Results of this study were as follows: 1. There were no significant differences in the semen volume, pH and sperm concentration of sperm-poor fraction of Yorkshire boars between spring and summer. However, sperm concentrations of sperm-rich fractions in spring were higher than those in summer (P＜0.05). 2. Sperm motility and normal acrosome of raw semen in Yorkshire boars did not differ significantly between spring and summer, However, motility and normal acrosome of frozen-thawed sperm were higher in spring season than in summer season (P＜0.05). 3. Serum testosterone concentrations in Yorkshire boars were 4.04 ng/$m\ell$ in spring and 2.85 ng/$m\ell$ in summer. Serum testosterone concentrations in spring were higher than those in summer (P＜0.05). 4. In conclusion, when serum testosterone concentrations in Yorkshire boars were higher, frozen-thawed sperm viability was higher.