• 디지털융복합연구
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• 제8권2호
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• pp.13-28
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• 2010

본 논문의 목적은 서비스 산업의 정보통신기술 이용 현황을 살펴보고, 산업별 생산성 분석을 통해 서비스 산업의 질적 성장을 위한 방안을 모색하는 것이다. 이를 위해 전체 자본스톡 중 정보통신기술 자본스톡의 비중과 노동자 인당 정보통신기술 투자액을 이용하여 각 산업별 정보통신기술 이용 현황을 알아보고, 성장회계 방식을 이용하여 이들 산업별로 총요소생산성의 시기별 분석과 외환위기동안의 생산성의 변화를 분석하였다. 그 결과는 다음과 같이 정리할 수 있다. 첫째, 서비스산업의 전체 자본스톡에서 정보통신기술 자본스톡이 차지하는 비중이 2000년 이후 줄어들었으나 서비스산업 내 노동자 일인당 정보통신기술 투자액이 지속적으로 증가하였다. 또한 미국 등 선진국과 비교해 보았을 때, 국내 서비스 산업의 정보통신기술 이용이 상대적으로 낮은 것으로 나타났다. 둘째, 산업별 생산성 분석 결과, 생산성 향상은 산업에 따라 조금씩 다르게 나타났으나. 대부분의 산업들이 외환위기 동안 생산성이 감소하다 외환위기가 지난 후 생산성을 빠르게 회복하고 2003 년 이후부터는 안정한 형태를 보였다. 셋째 정보통신기술을 더 많이 이용하는 산업일수록 생산성 증가가 크고, 외환위기 등 경제 외부적인 변화에서도 더 안정된 모습을 보였다. 이는 '외환위기 이후' 국내 서비스 산업에서 정보통신기술 이용이 산업의 생산성에 긍정적인 영향을 미치고 있는 것으로 해석할 수 있다.

• 산업경영시스템학회지
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• 제20권43호
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• pp.175-195
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• 1997

The learning curve has an important effect the growth of corporation. But, in Korea, the study and inference on the learning rate of each industry are unprepared, and so, Korean industires have difficult in productivity and cost. At this point, this study infers the learning rate of the oil industries and investigates the productivity and growth of them. In conclusion, this study presents the direction of the oil industries' development. With the intention of this objects, this study seizes the status which is concerned the total quantity, the operating rate, the plant capacity, the indicators concerning productivity, the investment of R & D and the scales, and then, infers and verifies the relevancy in connection with the learning rate. In the oil industry, the average rate of learning is 65.96% from 1982 to 1994 which the total quantity and the average operation time are used to infer the rate. To observe the low rate within a same period of time, this study takes the consequences that the learning rate is almost indentical with them each year. This steady state is caused by a difference between the employee and the decision maker about the acquirement and assimiliated of technology. When the high-quality technologies posses the environment to applicate in the scene of labor with them, this technology applies to the productivities. As the learning rate increases, the productivity has more effectiveness. The result of analysis about the effectiveness of the learning rate follows that the R & D unfoldes to exist and does not contribute to the growth of the oil industry. To analyze the variables of the growth, such as the learning rate, the investement of R & D, the operating rate and the gross value added to property, plant and equipment, the model is established and examined. The business strategy in the oil industry must be developed to achive the internal growth as well as the external.

• 한국산학기술학회논문지
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• 제16권9호
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• pp.5897-5905
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• 2015

본고에서는 통계청 광업제조업조사의 사업체별 미시자료를 이용하여 제조업을 대상으로 자본투입, 노동생산성, 총요소생산성 등 기업의 성장성과 관련된 경영지표의 분포를 사업체 규모별 및 시기별로 나누어 도출하고 이를 토대로 사업체 규모별 성장성의 차이가 주로 어떠한 요인에 기인하는지 살펴보았다. 총요소생산성 증가와 자본투입 증가(자본심화)가 실질 부가가치 증가에 미친 기여도를 시산해 본 결과 대규모 사업체의 총요소생산성 기여도가 중소규모 사업체에 비하여 더 크고 이러한 격차는 점차 확대되고 있음을 알 수 있었다. 반면 자본심화의 경우는 대규모 사업체의 경우가 중소규모 사업체에 비하여 오히려 더 낮았던 것으로 나타나 2000년대 이후 성장성에 있어서 중소기업과 대기업 간의 격차가 확대된 주 원인이 자본심화 보다는 총요소생산성 증가율 격차에 기인함을 확인할 수 있었다. 한편 사업체 단위별 노동생산성 및 총요소생산성의 분포를 구해 본 결과, 중소규모 보다는 대규모 사업체 집단에서 사업체 간 양극화가 더욱 뚜렷이 진행되고 있음을 알 수 있었다.

• Asian-Australasian Journal of Animal Sciences
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• 제16권4호
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• pp.481-488
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• 2003

Insulin-like Growth Factors (IGFs) and IGF-binding protein act as intra-ovarian regulators that modulate the proliferation and differentiation of the granulosa and theca cells. Moreover, the IGF system is involved in metabolism by modulating the synthesis and degradation of glycogen and protein in animals. However the effect of the IGF system on egg productivity or body growth in KNOC has not been studied in depth. Therefore, this study was performed to investigate differences of serum IGFs and binding protein expressions between two groups showing high and low egg production or body weight and to elucidate the relationship of IGFs with egg productivity and body growth. KNOCs were divided into high and low groups depending on their egg productivity or body growth, and sera were collected every 10 wk from 20 till 60 wk. Serum IGF-I and -II concentration were measured by RIA using human and mouse antiserum and chicken standards. IGFBP was detected by Western ligand blotting. IGF-I concentrations were significantly greater in the high egg production group compared with those in the low egg production group (30 wk, p<0.01; 20 and 40 wk, p<0.05). Also, differences in IGF-II amounts between the two groups were detected at 60 wk (p<0.05). But IGFBPs in the low egg production group were more intense than that in the high egg production group through the egg laying period. The correlation between IGF-I concentration and number of egg production is significantly positive (20 wk, r=0.2729: p<0.05; 40 wk, r=0.3500: p<0.01), while IGF-II shows no correlation with egg productivity. In male KNOC, IGF-I and -II concentrations in the high body weight group are lower than that in the low body weight group. Body weight also shows a negative correlation with the serum IGF-II concentration in male chickens (20 wk, r=-0.5901: p<0.01). Consequently, we suggest that IGFs and binding protein are (in)directly involved in the egg productivity and body growth in KNOC.

• 대한환경공학회지
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• 제39권6호
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• pp.332-338
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• 2017

본 연구는 혼합영양생물인 Scenedesmus acuminatus의 최적배양조건을 찾기 위한 연구로서 최적 공기주입량, 아세테이트 주입량, $CO_2$ 주입에 대해 실험을 진행하였다. 공기주입량은 0.72 vvm에서 최대 비성장속도와 최대바이오매스 생산량을 얻을 수 있었으며, 0.3 M의 아세테이트를 주입하였을 때 최대 비성장속도와 최대바이오매스 생산량을 얻었다. 반연속배양에서는 추가로 $CO_2$ 주입이 배양에 미치는 영향을 파악하였다. $CO_2$ 주입 실험에서는 아세테이트로 50% 치환한 후에 최대비성장속도($0.460d^{-1}$)와 최대바이오매스 생산성($0.936gL^{-1}d^{-1}$)을 얻을 수 있었으며 이후 치환이 계속될수록 최대비성장속도와 최대바이오매스 생산성은 지속적으로 감소하였다. 공기주입 실험에서는 JM 배지로 배양할 때 가장 높은 비성장속도($0.381d^{-1}$)와 최대바이오매스 생산성($0.253gL^{-1}d^{-1}$)을 보여주었지만 이후 아세테이트를 함유한 배지로 50% 치환하였을 때 오히려 초기값보다 감소하는 것을 관찰하였다.

• 한국초지조사료학회지
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• 제13권3호
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• pp.190-194
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• 1993

This experiment was conducted to investigate the effects of concentrated sulfate on the germination rate, growth rate and the productivity of weight of kudzu (Pueraria thwnbergiana Bentham). The germination rate of kudzu seed by one or two treatment retreatment with the concentrated sulfate for minutes of 5. 10, 15 and 20 were determined respectively. The results obtained were summarized as follows; 1. In the time of concentrated sulfate treatment, the germination rate was the highest in the once treatment for 20 minute. and the retreatment was higher than the once treatment in the germination rate. 2. The changes of plant length by growth stage was grown gradually until for 60 day and rapidly after for 60 day. The growth rate was the highest in treatment for 15 minute than in other treatments. 3. The stem diameter. stem weight. fresh weight and root weight by the treatment with sulfate 15 minute as the treatment with once were high degree of productivity. 4. The number of branch. number of nodes and root weight by the growth stage were higher growth rate before for 90 day than after for 90 day, however stem weight and fresh weight were high degree of productivity after for 60 day.

• 약학회지
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• 제51권3호
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• pp.214-218
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• 2007

In the previous reports, we developed the CO5 by introducing genes for the first and second urea cycle enzymes, carbamoyl phosphate synthetase I (CPS I) and ornithine transcarbamoylase (OTC) into the IBE cell lines producing erythropoietin (EPO). The CO5 have been found out to have 15-20% higher cell growth rate and produce 2-times more EPO than the parental cell line, IBE. To investigate the role of CPS I in CO5 cell line for the cell growth and amount of EPO, we knock-downed CPS I gene expression via siRNA treatment. Expression level of EPO in cell lysate of CO5 was 3-5 fold higher than that of IBE. After siRNA treatment, the cell growth of CO5 was decreased 8-21% and the EPO productivity in the cell Iysate was significantly decreased. However, these changes of the cell growth and EPO productivity were not observed in IBE. These results indicate that CPS I gene expression is important for the increased cell growth and EPO productivity of CO5 cell line.

• 한국환경과학회지
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• 제33권1호
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• pp.59-65
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• 2024

The objective of this study were to assess rooftop urban agriculture and analyze the differences in soil, growth, physiology, and productivity to elucidate the effect of companion planting with various plants, including lettuce (Lactuca sativa), rosemary (Salvia rosmarinus), marigold (Tagetes patula), Korean perilla (Perilla frutescens), and garlic chives (Allium senescens). Measurements were taken every other week from May to August 2023, totaling eight measurement. Regarding the characteristics of the soil planted with lettuce and aromatic plants, the combined planting of lettuce and garlic chives created a favorable soil environment for plant growth. Consequently, the best growth was observed when lettuce and garlic chives were companion planted. Companion planting of lettuce and garlic chives appears to be the most efficient concerning growth and physiology. The productivity of companion planting lettuce and aromatic plants also showed high-quality lettuce when lettuces and garlic chives were companion planted. Therefore, companion planting of lettuces and garlic chives in rooftop urban agriculture is suitable for growth, physiology, and productivity.

• 농업과학연구
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• 제42권3호
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• pp.223-229
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• 2015

This study was conducted to investigate the changes in the pig productivity after ban of antibiotics growth promoter in commercial pig farms. A total 74 pig farms that herd size is from less than 100 sows to more than 500 sows were selected for survey. Changes of pig productivity before/after ban of antibiotics were analyzed by comparing with our survey results and report of KPPA (Korean Pork Producers Association, 2013). In the results, no difference on pig productivity was observed by herd size among our survey farms. Live born piglets have been raised as time passes since 2003, and then it reach to 10.6 head per sow in 2012. The numbers of weaning piglet tended to increase, but sow turnover ratio was found to be a tendency to decrease after ban of antibiotics in our survey results. There was no effect of using antibiotics on mortality of pre- and post- weaning. Marketing per sow per year (MSY) does not be improved because the post-weaning mortality was maintained at a high level, despite live pig born and weaning piglet have increased after 2003. In conclusion, a ban of antibiotics growth promoter does not directly affect to pig productivity, but it needs the efforts to reduce the mortality of post-weaning for improvement of pig productivity. We suggest that this data will be useful to swine industry as the fundamental information.

• 기술사
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• 제32권6호
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• pp.44-47
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• 1999

This study deals with the quality strategy using brain science as the tool of productivity improvement. Especially, it is critically analyzed that the application of the brain theory to the new deployment methodology of quality management corresponds to the industrial improvement properly in points of performing quality and productivity, and contributing the growth of our society etc.