• 경영정보학연구
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• 제8권3호
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• pp.201-223
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• 2006

이 연구는 국내기업의 정보화 투자비용과 투자효과 현황을 분석하고, 수집 데이터를 토대로 여러 선행 연구에서 제시된 IT효과 창출모델의 타당성을 검증하였다. 2005년 국내 기업의 IT예산은 매출액 대비 2.53%로서 종전에 비하여 약간 증가하였으며, IT효과 역시 예전보다 상당히 높아진 수준으로 발생하고 있다. 그러나 일반적 예상과는 달리, 여러 선행 연구에서 논쟁 중인 IT예산과 IT효과 사이의 상관관계는 통계적으로 유의하지 않으며, 이 외에도 일부 연구에서 중요한 요인으로 제시되고 있는 CEO 리더십, IT부서 역량, IT부서와 현업부서 사이의 협력 수준, 이용자 만족도 등은 IT효과에 별 영향을 미치지 않는 것으로 나타났다. IT효과에 영향을 미치는 것은 정보시스템 기술적 품질, 자원배분에 관한 CIO 리더십, 그리고 현업부서의 정보화 추진의지 및 활용능력 3개 요인으로 나타났다. 이러한 연구 결과는 IT관리자와 연구자에게 필요한 사실정보와 향후 연구 방향을 제공할 것으로 판단된다.

• 한국콘텐츠학회논문지
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• 제11권1호
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• pp.266-276
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• 2011

이 연구는 대부분의 병원에 있어 구성원 수가 가장 많을 뿐 아니라 서비스 제공 과정에 고객과의 직접적인 접점이 가장 빈번한 간호사의 전문직업성이 직무만족과 고객지향성 및 서비스 제공 수준 간에 미치는 영향과 구조적 관계를 분석하여 구성원으로 하여금 양질의 서비스를 제공하는데 필요한 전략적 방안을 도출할 목적으로 수행되었다. 연구를 위해 구조화된 설문지를 이용하여 서울지역의 6개 전문병원의 간호사 142명으로부터 자료를 수집하여 크론바흐 $\alpha$와 SPSS 2.0K를 이용한 요인분석을 시행하였다. 연구 결과, 전문직업성은 고객지향성과 직무만족에 정(+)의 영향을 미쳤으나 서비스 제공 수준에는 정(+)의 영향을 미치지 않았으며, 고객지향성은 서비스 제공 수준에 정(+)의 영향을 미친 반면에 직무만족은 서비스 제공 수준에 정(+)의 영향을 주지 않는 것으로 분석되었다. 따라서 간호학과의 교과과정에 고객만족과 서비스의 중요성을 강조하는 과목이 포함되어야 하며, 전문병원도 재직 중인 간호사를 대상으로 고객관리의 중요성을 지속적으로 교육하는 것이 필요할 것이다.

• Asian-Australasian Journal of Animal Sciences
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• 제13권3호
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• pp.360-368
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• 2000

Two experiments were conducted to test the hypothesis that a lipase-based enzyme preparation would increase the AME content of full-fat rice bran (FFRB) by increasing fat digestibility when fed to broiler chickens. Experiment 1 used FFRB from Australia and lasted for 35 days, while Experiment 2 used FFRB from Thailand and lasted for 14 days. Rice bran was substituted in a maize-soybean diet at levels of 90 g/kg (Experiment 1) and at 90 and 180 g/kg in Experiment 2. Total collections of excreta were used for determination of AME content and fat digestibility. In Experiment 1, the enzyme increased the AME content of FFRB between days 4-7, 18-21 and 32-35 by 6.1-16.1% (p>0.05), however this was not associated with improved fat digestibility. In Experiment 2, the enzyme enhanced the AME content of FFRB between days 4-7 (10.42 vs. 9.06, p=0.107) and 11-14 (11.94 vs. 9.93, p=0.041), but again, this was not caused by increased fat digestibility. Inclusion of 180 g/kg depressed the AME content of FFRB by 7.4-11.5% (p>0.10) in conjunction with decreased (p<0.05) fat digestibility between 0-14 days of age. Improvements in bird growth with the enzyme were seen in Experiment 2 but not in Experiment 1. Increases in AME content of FFRB per se were not caused by enhanced fat digestibility, suggesting that the side activities associated with the preparation must have acted singularly or in combination to improve AME content and bird performance. These data show that the response of FFRB to the lipase-based enzyme preparation was dependent upon the geographical origin of the rice bran and the level of FFRB substituted in the basal diet.

• Asian-Australasian Journal of Animal Sciences
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• 제20권9호
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• pp.1453-1461
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• 2007

This study was conducted to test the hypothesis that dietary supplementation with an herbal extract of Acanthopanax senticosus (AS) enhances the immune response in weaned piglets. Sixty piglets weaned at 21 days of age were randomly assigned to 3 treatment groups representing the addition of 0 or 1 g/kg of the AS extract or 0.2 g/kg of colistin (an antibiotic) to maize- and soybean meal-based diets (n = 20 per group). On days 7, 14 and 28 after initiation of the addition, total and differential counts of leucocytes, proliferating activity of peripheral lymphocytes, serum levels of immunoglobulins (Ig) and cytokines and the spleen index were determined. The AS extract decreased (p<0.05) the number of neutrophils on days 7 and 28 in comparison with the control group and reduced (p<0.05) serum interleukin-$1{\beta}$ level on day 28 compared with the other 2 groups. Dietary supplementation with the AS extract increased (p<0.05) the lymphocyte/leukocyte ratio on day 28 compared with the control group and increased the proliferating activity of lymphocytes on days 14 and 28 compared with the other 2 groups. The AS extract increased (p<0.05) the serum content of IgG on day 7 and of IgG and IgM on day 28 compared with the other 2 groups, as well as increasing the serum content of tumor necrosis factor on day 7 and spleen index on days 7 and 28 compared with the control group. Collectively, these findings suggest that the AS extract as a dietary additive enhances the cellular and humoral immune responses of weaned piglets by modulating the production of immunocytes, cytokines and antibodies.

• Asian Pacific Journal of Cancer Prevention
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• 제14권11호
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• pp.6949-6953
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• 2013

Background: Nowadays, the encapsulation of cytotoxic chemotherapeutic agents is attracting interest as a method for drug delivery. We hypothesized that the efficiency of helenalin might be maximized by encapsulation in ${\beta}$-cyclodextrin nanoparticles. Helenalin, with a hydrophobic structure obtained from flowers of Arnica chamissonis and Arnica Montana, has anti-cancer and anti-inflammatory activity but low water solubility and bioavailability. ${\beta}$-Cyclodextrin (${\beta}$-CD) is a cyclic oligosaccharide comprising seven D-glucopyranoside units, linked through 1,4-glycosidic bonds. Materials and Methods: To test our hypothesis, we prepared ${\beta}$-cyclodextrin-helenalin complexes to determine their inhibitory effects on telomerase gene expression by real-time polymerase chain reaction (q-PCR) and cytotoxic effects by colorimetric cell viability (MTT) assay. Results: MTT assay showed that not only ${\beta}$-cyclodextrin has no cytotoxic effect on its own but also it demonstrated that ${\beta}$-cyclodextrin-helenalin complexes inhibited the growth of the T47D breast cancer cell line in a time and dose-dependent manner. Our q-PCR results showed that the expression of telomerase gene was effectively reduced as the concentration of ${\beta}$-cyclodextrin-helenalin complexes increased. Conclusions: ${\beta}$-Cyclodextrin-helenalin complexes exerted cytotoxic effects on T47D cells through down-regulation of telomerase expression and by enhancing Helenalin uptake by cells. Therefore, ${\beta}$-cyclodextrin could be superior carrier for this kind of hydrophobic agent.

• 산업진흥연구
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• 제2권1호
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• pp.15-29
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• 2017

본 연구는 조직유효성에 미치는 조직문화와 조직커뮤니케이션 요인 간의 상호작용이 조직유효성에 어떻게 영향관계를 미치는지에 대해 살펴보고자 하였다. 본 연구에 대한 실증분석을 위해 중소기업 핵심직무 교육과정에 참석한 교육대상자를 대상으로 설문 진단을 실시하였다. 본 연구의 가설을 검증하기 위해 통계프로그램 SPSS 20.0을 통해 기술통계 분석, 상관관계분석, 회귀분석, 다중회귀분석, 조절효과 분석으로 조직문화 유형과 조직유효성 간의 영향관계에서 조직커뮤니케이션의 조절효과를 분석하였다. 본 연구에 대한 실증분석 결과 조직문화 유형은 조직유효성인 조직몰입과 직무만족에 긍정적인 영향을 미치지만, 조직커뮤니케이션의 조절효과에서는 조직문화의 과업지향문화 유형만이 조직유효성인 조직몰입과 직무만족에서만 긍정적인 조절효과를 나타내었다. 이에 본 연구는 조직문화 유형와 조직유효성 간의 영향 관계에서 조직커뮤니케이션의 조절효과를 분석함으로써 기존 선행 연구에 대한 이론적 타당성을 재검토 하였다. 한편, 변수들 간의 상호작용 효과를 실증 분석함으로써 변수 개별적으로 이루어졌던 선행연구들 간의 통합을 추구했다는 점에서 의의를 찾을 수 있다.

• 한국항만경제학회지
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• 제36권1호
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• pp.141-164
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• 2020

전 세계적으로 기업환경의 불확실성과 복잡성과 더불어 기업은 경쟁우위를 확보하기 위한 핵심요소의 하나로 공급사슬관리에 집중해오고 있다. 성공적인 공급사슬관리는 기업의 내부적 핵심역량과 공급사슬에서의 개별 기능의 통합을 강화하기 위한 노력을 추진해 왔다. 본 연구의 목적은 기업 간 정보공유가 공급사슬통합과 기업성과에 미치는 영향을 분석하는데 있다. 선행연구를 통해 설정된 연구가설을 구조방정식을 활용하여 분석하였다. 전체 723부의 설문지가 가설검정을 위해 투입되었다. 본 연구를 통해 기업간 정보공유는 공급사슬통합에 커다란 영향을 미치며, 이는 운영적·전략적 수준에서 재무, 시장점유율 그리고 고객 만족 등의 기업성과에 긍정적 영향을 미친다는 결과를 도출하였다. 기업간 정보의 통합과 공유를 통한 공급사슬의 통합은 정보, 서비스, 재화 및 돈의 흐름을 촉진시킨다. 그러므로 만약 공급사슬의 구성원간 정보가 단절되며 전체 공급사슬관리에 부정적인 효과를 가져올 것이다. 반면 공급사슬구성원이 단일의 플랫폼에서 실시간으로 효율적으로 정보를 고유할 수 있다면 전체 공급사슬의 최적화를 도모할 수 있다. 전략적이고 운영적 수준에서 정보의 공유와 통합은 공급사슬통합에서 중요한 역할을 하며, 이는 기업의 성과와 경쟁력 제고에 기여할 것이다.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2017년도 9th Asian Crop Science Association conference
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• pp.351-351
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• 2017

Arbuscular mycorrhizal fungi (AMF) are particular soil fungi that benefit many crops and require a symbiosis with plant roots to survive. In our previous study, there was a positive correlation between AMF root colonization and soybean grain yield in a four-year consecutive winter cover crop-soybean rotational system without phosphorus fertilizer. It is suggested that higher AMF root colonization can be a better solution for improving soybean growth and grain yield in P-limited soil. Our purpose in this study was to test the hypothesis that a P application is the main factor improving soybean growth, P nutrition and grain yield, and the benefit from AMF to soybean P uptake and growth in a P-limited soil. Impact of a P application on AMF root colonization and communities in soybean roots and their potential contribution to soybean growth and P nutrition under a five-year P-unfertilized crop rotational system were investigated over two-years. In this study, four cover crop treatments included 1) wheat (Triticum aestivum); 2) red clover (Trifolium pratense); 3) rapeseed (Brassica napus); and 4) fallow in the crop rotation. The amount of triple superphosphate as a P fertilizer applied rate after cultivation of cover crops was 120 and $360k\;ha^{-1}$ in 2014 and 2015, respectively. Soybean roots were sampled at full-flowering and analyzed for AMF communities using polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) and quantitative real-time PCR (qPCR) techniques. The AMF root colonization in the soybean roots at full bloom stage was significantly influenced by cover crop and P application throughout the two-year rotation. The two-year rotation of different cover crops or fallow impacted the molecular diversity of AMF communities colonizing roots of soybean. Redundancy analysis (RDA) indicated that AMF communities colonizing roots of soybean were significantly different among cover crop rotations. The AMF communities colonizing roots of soybean were clearly influenced by a P application in the two-year trial. Moreover, a P application may have positively impacts on the AMF communities under P-deficit soil due to the continuous cover crop-soybean rotational system without a P fertilizer.

• 대한치과기공학회지
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• 제30권2호
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• pp.121-133
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• 2008

The purpose of this study was to evaluate the role of socioeconomic factors and health behaviors on the prevalence of oral diseases(dental caries and periodontal disease) among Korean adults. Data from the 2005 National Health and Nutrition Examination Survey was analyzed for adults aged over 19 years (n=25,215). Oral disease was defined as disease diagnosed by a dentist for the previous 12 months. Chi-square test and logistic regression analysis were used to conduct statistical analysis. The population without dental caries and periodontal diseases were used as the reference category for all analysis. The overall prevalence of annual dentist-diagnosed dental caries and periodontal diseases were 23.5% and 10.6% respectively. The relative risk of developing dental caries for graduates of middle school and lower were 1.53 times (95% CI: 1.24-1.89) more likely to develop dental caries comparing to college graduates. Low income earners were 1.23 times(95% CI: 1.01-1.49) more likely to develop dental caries than high income earners. Persons covered by national medical insurance were 1.45 times(95% CI: 1.08-1.95) more likely to develop dental caries comparing to persons covered by employee medical insurance. Compared with persons not eating snacks, the risk of developing caries in persons eating snacks once a day was 1.16(95% CI: 1.01-1.32), while those who snacked twice or more a day were 1.19(95% CI: 1.01-1.41). The relative risk of developing periodontal disease was 3.71(95% CI: 2.38-5.80) higher in older individuals than younger. In terms of education level, middle school graduates and lower were 1.54 times more likely to develop periodontal disease than college graduates. Low income earners were 1.47 times more likely to develop periodontal diseases than high income earners. Using data from a large, nationally representative sample of Korean populations, we support the hypothesis that the prevalence of oral diseases is related with socioeconomic factors and health behaviors. More intensive intervention efforts to reduce the prevalence of dental diseases are warranted in Korea.

• 한국병원경영학회지
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• 제3권1호
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• pp.192-218
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• 1998

This study is the positive one about the influence which the characteristics of medical consumers' perceived words-transmission information exercises on its acceptance level and its activities. The aim of this study was to investigate how the characteristics-reliability of perceived information, its directionity, and its availability-had an influence on the acceptance level and activities of words-transmission information. For the purpose of that aim, the positive research by questionnaire was applied. In addition, to collect necessary data, investigation was performed about 20 days from July 1st, 1938 to July 20th, 1938. As for the respondents' sampling in sample planning, the method of Simple Random Sampling was used laying stress on patients or their responsible person aged over 20s in second and third medical institutions. And the collected sample were 230 people. Of these, However, the number of sample used actually for this study analysis was 211 except 19 people who responded unfaithfully. The analysis of the data collected by the abovesaid investigation used SPSS/PC statistical package. The study result to have proved the hypothesis by experiment is as follows. First, as the result of having analysed the influence relations on the acceptance level and activities of words-transmission information among the factors of reliability about medical consumers' perceived information, I found that 'specialty' had an affirmative effect and there was a significant effect relations. Second, as the result of having made a multi-regression analysis of the effect relations on the acceptance level and activities of words-transmission information of the factors of directionity on medical consumers' perceived information, 'reliablity' was found as having a significant effect on the acceptance of words-transmission information. Third, 'importantness' was revealed as having a significant effect on the words-transmission activities in the acceptance level and activities of words-transmission information among the factors of reliability on medical consumers' perceived information. Fourth. for medical consumers there was a statistical correlation between the acceptance level and activities of words-transmission information. Therefore, words-transmission communication will be very useful for hospital promotion programs having a limited advertising ability in business. Especially, I suggest that a person in charge of his/her hospital marketing should not only excavate a source of words-transmission communication in order to arrive effectively at sampling market, but also use a marketing mix suitable to that The test result shows that the unsatisfied patients over their hospital treatment tend to be more stronger in transmitting words to the other positive minded patients than the satisfied ones. Therefore, all relating representatives in hospital should concentrate their energies on decreasing or eliminating these unwanted results.