• 한국응용곤충학회지
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• 제49권2호
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• pp.93-95
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• 2010

나선선충과의 한국 미기록종 Rotylenchus arsenjevi를 기재하였다. 한국 종은 구순부가 반원형이고 미장이 약간 짧고, 수컷은 처음으로 채집되었다. Geocenamus adakensis는 한국에서 두번째로 채집되었다. 이번에 채집된 종의 측정치를 원기재 종 및 지난번 채집한 종과 비교하였다.

• Journal of the Korean Society for Industrial and Applied Mathematics
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• 제18권4호
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• pp.283-294
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• 2014

In this paper we study consumption-labor supply decision of an agent who prepares for retirement at a known time in the future. The agent is assumed to have a preference which is represented by the von Neumann-Morgenstern utility function in which the felicity function has constant relative risk aversion over the composite of consumption and leisure. The composite is obtained by the Cobb-Douglas function. A general problem has been studied by Bodie et al. (2004). We contribute to the literature by deriving the Slutsky equations and conducting comparative statics. In particular, we show that wealth effect can exhibit an interesting property depending upon the time until retirement, as the interest rate increases.

• 수산경영론집
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• 제49권4호
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• pp.19-36
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• 2018

Overstock in aquaculture is a matter of concern in aquaculture management. To sort fish based on fingerling size in case of overstocking is an important problem in aquaculture farm. This study aims to determine the amount of fry overstock and sorting time in aquaculture farm. This study builds a mathematical model that finds the value of decision variables to optimize objective function summing up the fingerling purchasing cost, aquaculture farm operating cost and feeding cost under mortality and farming period constraints. The proposed mathematical model involves following biological and economical variables and coefficients: (1) number of fingerlings, (2) sorting time, (3) fish growth rate and variation, (4) mortality, (5) price of a fry (6) feeding cost, and (7) possible sorting periods. Numerical simulation is presented herein. The objective of numerical simulation is to provide decision makers to analyse and comprehend the proposed model. When extensive biological data about growth function of fry becomes available, the proposed model can be widely applicable to real aquaculture farms.

• Journal of Pharmaceutical Investigation
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• 제16권4호
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• pp.148-151
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• 1986

This paper was designed to investigate the influence of different suppository bases on both the rectal absorption and dissolution rate of lithium carbonate, and to compare bioavailability from rectal administration with that from oral administration. The dissolution rates were in such order as PEG 4000, surfactant A (Witepsol 15+sodium lauryl sulfate), surfactant B (Witepsol 15+cholic acid), Witepsol 15 and cacao butter. Among various suppository bases, the blood level of lithium carbonate after rectal administration was increased in the following order: surfactant A>surfactant B>PEG 4000>Witepsol 15>cacao butter. When it comes to compare oral with rectal administration in AUC values, surfactants and PEG 4000 showed similar blood levels to oral administration, but lipophilic bases such as Witepsol 15 and cacao butter showed far lower blood level than oral administration. Peak time in oral administration was 2 hrs, but those in rectal administration using various suppository bases were $6{\sim}8$ hrs.

• 한국병원경영학회지
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• 제15권3호
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• pp.47-68
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• 2010

One of the important complaint factors by the patients using medical institutions is various kinds of waiting time. This research is about the causal relationships among waiting time(application of waiting time, perceived of waiting time, fairness of waiting, explanation of the delay, acceptance possibility), service values, and customer satisfaction. The subjects for this study were 256 out-patients currently using seven general hospitals in the Busan area. The findings of the empirical analysis are as follows: First, the good application of waiting time or fair waiting time procedure didn't actually affect perceived waiting time. Second, though the application of waiting time didn't affect acceptance possibility, the fair procedure of waiting time had an affirmative effect on acceptance possibility. Third, even when there was enough explanation about the need to wait, it could shorten perceived waiting time but failed to get sufficient sympathy or agreement from the patients. Fourth, the possibility of acceptance following the sufficient sympathy of patients had an effect on shortening perceived waiting time. Fifth, perceived waiting time lowered customer satisfaction, but had no negative effect on service values. Finally, the ranges of acceptance possibility by the patients were found to increase customer satisfaction and maximize service values. In conclusion, every medical institution needs to focus on, first of all, shortening waiting time for more customer satisfaction and improved service values.

• 수산해양교육연구
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• 제28권6호
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• pp.1751-1760
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• 2016

The Fisheries business administration is not only the social sciences in the education of fisheries and marine related fields but also has been lectured and educated in both high school and college level. But there are few studies that have been conducted a comparative analysis on the contents in fisheries business administration education in the continuity and sustainability. The objectives of this study are analysis of contents construction in fisheries business administration and suggestion of systematic structure with comparing the textbook of fisheries business administration in high school and college(Gyeongsang National University and Pukyong National University). The results of study show that some structural contents similarity has been found among the fisheries business administration textbooks though some of the contents are insufficient. And there are lack of recency both data and descriptions in fisheries business administration textbooks and much of time gaps based on publication year. Based on the result of this study, the integrated framework that consist with 5 main contents categories has been suggested for education of sustainable development in fisheries business administration. But still needed to be discussed the range and level of fisheries business administration issues by stakesholders including academic community, researcher and industrial personnel.

• 한국경영과학회지
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• 제38권2호
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• pp.25-42
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• 2013

We consider a project time-cost tradeoff problem with two milestones, where one of the jobs has an uncertain processing time. Unless each milestone is completed on time, some penalty cost may be imposed. However, the penalty costs can be avoided by compressing the processing times of some jobs, which requires additional resources or costs. The objective is to minimize the expected total costs subject to the constraint on the expected project completion time. We show that the problem can be solved in polynomial time if the precedence graph of a project is a chain.

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2005년도 생물공학의 동향(XVI)
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• pp.538-539
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• 2005

• 한국작물학회:학술대회논문집
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• 한국작물학회 1990년도 춘계 학술대회지
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• pp.120-121
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• 1990

• 한국원자력학회:학술대회논문집
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• 한국원자력학회 2005년도 추계학술발표회
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• pp.546-547
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• 2005