• The Korean Journal of Health Service Management
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• v.4 no.1
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• pp.71-86
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• 2010

The purpose of this study is to promote efficiency of hospital management with customer satisfaction by understanding qualitative system about more systemic hospital service coordinator's job under analyzing the satisfactory degree and coherence of hospital service coordinator's job because of increase of customer need level by medical environment improvement and the variety of offering method of medical service. I allocated a questionnaire per each hospital around dentistry, Oriental medicine clinic, plastic surgery in medical examination department and withdrew questionnaire on total 662 hospitals. According to the study results stated above, generally necessity on employment of a hospital service coordinator appeared high and To the necessity, I considered that a hospital service coordinator's job must strengthen the role for going still more to customer with discriminated mind and service not simple kind service to medical consumer, with establishing more systematic and realistic educational culture in qualification and educational department of a hospital service coordinator. Also a hospital service coordinator must be changed to promote customer satisfaction and efficiency of hospital management by more systematic business assignment and role establishment.

• Journal of Aquaculture
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• v.13 no.3
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• pp.259-265
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• 2000

Four experimental diets were formulated to contain white fish meal (WFM) andvor BAIFA-M as the main animal protein source to determine the optimum BAIFA-M level to replace WFM protein. The diets contained 100% WFM + 0% BAIFA-M in the diet M$_0$ (control) . 70%, WFM+30%, BAIFA-M in the diet M$_{30}$, 55 % WFM+45 % BAIFA-M in the diet M$_{45}$, ; 40 % WFM+60 % BAIFA-M in the diet M$_{60}$. The four groups of rockfish (232 g), receiving the four different diets, were fed for 8 weeks. Groups receiving M$_0$, M$_{30}$ and M$_{45}$/ diets did not show significant (P>0.05) difference in growth and feed efficiency; however, the group fed on M$_{60}$/ showed significantly slower growth and lower feed efficiency than the others. Body composition showed no significant difference among the four dietary groups. WFM protein can be replaced by BAIFA-M up to 45 % in the diet of the rockfish.

• Journal of Biosystems Engineering
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• v.15 no.2
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• pp.123-133
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• 1990

Thermal performance of a solar heating plastic greenhouse designed for a hydroponic system was studied. The system was constructed with the air-water heat exchanger and thermal storage tank that were combined with hydroponic water beds. Experiments were carried out to investigate the daily average heat stored and released in thermal storage tank, average solar energy collection efficiency, average coefficient of performance, average oil reduction factor of thermal storage system, and the heat transfer coefficient during the nighttime in plastic greenhouse. The results obtained in the present study are summarized as follows. 1. Daily average heat stored in thermal storage tank and released from the thermal storage tank was 1,259 and $797KJ/m^2$ day, respectively. 2. The average solar energy collection efficiency of thermal storage tank was 0.125 during the experiment period. And the average coefficient of performance of thermal storage system in plastic greenhouse was 3.6. 3. The average oil reduction factor of thermal storage system and the heat transfer coefficient during the nighttime in plastic greenhouse were found to be 0.52 and $4.3W/m^2\;hr\;^{\circ}C$, respectively.

• Journal of Microbiology and Biotechnology
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• v.14 no.3
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• pp.442-449
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• 2004

Improving the light utilization efficiency of photosynthetic cells in photobioreactors (PBRs) is a major topic in algal biotechnology. Accordingly, in the current study we investigated the effect and suitability of photosynthetic pigment reduction for improving light utilization efficiency. The light-harvesting complex II (LH-II) genes of Rhodobacter sphaeroides were removed to construct a mutant strain with less pigment content. The mutant strain exhibited a slower growth rate than the wild-type under a low light intensity, while the mutant grew faster under a high light intensity. In addition, the specific absorption coefficient was lower in the mutant due to its reduced pigment content, thus it seemed that light penetrated deeper into its culture broth. However, the distance (light penetration depth) from the surface of the PBR to the compensation point did not increase, due to an increase in the compensation irradiance of the mutant strain. Experimental data showed that a reduced photosynthetic pigment content, which lessened the photoinhibition under high-intensity light, helped the volumetric productivity of photosynthetic microorganisms.

• Journal of the Korea Safety Management & Science
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• v.17 no.1
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• pp.13-19
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• 2015

Continued efforts to build up Safety Management System(SMS) and to improve its efficiency in airports, to which customers have direct access, are taken for granted due to continuous development of the aviation industry in both quantity and quality and rapid growth of air transportation market. This thesis proposed efficient operation methods of SMS for domestic airport organizations including Incheon International Airport(IIA), the largest airport in South Korea, aiming at strengthening aviation safety from the perspective of airport operators who play a pivotal role in service provider SMS. Those are consolidation of the existing safety management organizations and various improvements to promote voluntary incident reporting system. To draw a proposal for the improvements, conducted a research on domestic safety management status, carried out an analysis on operating conditions and did a research on ICAO regulations, domestic legal system as well as statistics data. Relevant studies and researches were also gathered and analyzed. A search for further improvements can also help increase operational efficiency and promoting a higher-level of safety awareness among operators can establish mature safety culture at airports.

• 한국생물공학회:학술대회논문집
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• 2000.11a
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• pp.540-543
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• 2000

Microbial desulfurization using a biocatalyst which is capable of selectively liberating sulfur from HDS-refractory organic sulfur compounds is an alternative biotechnology to the current technology of hydrodesulfurization. The system used in the experiments is a two phase system consisting of 0.1%(w/v) dibenzothiophene in hexadecane as model oil and a mineral medium for cell growth. Rhodococcus rhodochrous IGTS8, a desulfurization strain, was grown in flask culture at different oil phase ratio with 10% and 30%. Most of the dibenzothiophene was converted to 2-hydroxybiphenyl when the oil ratio was 10%, but wasn't when the oil ratio was 30%. However, the total degraded DBT amounts were similar. In experiments of adjusting pH to improve the efficiency of degradation, the amounts of degraded DBT were increased by 50%. When the modified medium which has two-fold nutrients than those of minimal salt medium was used, the amounts of degraded DBT were increased by 32%. When both of the methods were used, the efficiency was increased by 136%.

• Journal of Plant Biotechnology
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• v.30 no.3
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• pp.215-219
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• 2003

This study was conducted to find optimum bacterial density for improving the efficiency of transformation mediated by Agrobacterium tumefaciens in apples. Regeneration(15％) and transformation frequency(10％) were increased in resuspension-culture density $A_{600}$ 1.3 from preculture density $A_{600}$ 0.7 of Agrobacterium tumefaciens in ′Fuji′. In ′Gala′, 20% regeneration and 16% transformation frequency were observed at optimum bacterial density $A_{600}$ 0.7 form preculture density $A_{600}$ 1.3. ′Mclntosh as well as "Gala" were 25％regeneration and 10％ transformation frequency. Hence a frequency optimum condition of bacterial density for the efficient transformation of apple could be depend on apple genotypes.

• Korean Journal of Plant Tissue Culture
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• v.27 no.2
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• pp.95-100
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• 2000

The cytosolic glutathione reductase (GR) gene of Brassica campestris L. was introduced into several Japonica cultivars of rice by Agrobacterium tumefaciens and a large number of transgenic plants were produced. Three-week old calli were co-cultivated with A. tumefaciens strain EHA101 carrying the plasmid pIGR1. The efficiency of transformation was differed from rice cultivars. A Japonica cultivar, 'Daeribbyeo' appeared the highest efficiency (42.5%) of transformation among the four cultivars tested. The addition of acetosyringone (50 $\mu$M) during co-cultivation was a key to successful transformation. Transgene fragments were identified by PCR amplification and further confirmed by Southern blot analysis. Mendelian inheritance of the transgenes was confirmed in T$_1$ progeny.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2006.11a
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• pp.473-477
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• 2006

In domestic construction site, convenient facilities for worker are much lacking up to now. These things exert negative influences in the occurrence of construction disaster because a safety-aware of worker-self is been lacking ultimately, and 3D(Dirty Dangerous Difficult) evasion phenomenon for construction site spreads more to workers and actuality that is going through manpower problems may be heavier. This research applied sensitivity safety cultural institutions that make aware of worker's sensitivity in spot to search solution way of these problems from resource of human original nature. By the result, there were affirmative sides that sensitivity safety cultures facilities make created a safety-aware during work to worker-self. Also, these facilities gave as member of a constituent by workers, it examined that become many helps in operation efficiency.

• Horticultural Science & Technology
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• v.32 no.6
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• pp.788-793
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• 2014

Vegetative propagation of walnut is difficult compared with that of other fruit and nut species. The present study assessed three methods of grafting (patch, shield, and chip) at various periods of walnut growth and with different timings of grafting in walnut. Early May was the best time for grafting, at which time the highest success rate was obtained by the patch method (96%), followed by chip-budding (75%), while shield-grafting showed the lowest efficiency (10%). Patch-grafting was also successful (75-80%) in early August and moderately successful in mid-June (51-55%), while the shield and chip methods had no success during these two times (0.00%). Patch-grafting was more efficient and also induced better callus formation and scion growth than the other two methods. The genotypes used did not affect grafting efficiency. The best results were obtained by patch-budding in both tested genotypes. The present findings show the potential value of patch-grafting in early May as a propagation method for walnut for establishment of guidelines for propagation.