• The Plant Pathology Journal
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• 제18권6호
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• pp.333-337
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• 2002

Bacteriophage of Xanthomonas axonopodis pv. citri, a causal agent of citrus canker disease, was studied for its cultural characteristics. The relative efficiency of plat-ing (EOP) of 11 phages used to 13 strains off, axonopodis pv. citri tested ranged from 0.8 to 1, indicating that the phages are homogeneous. Homogeneity of the phages suggests that citrusphage belongs to a single group CPK as reported in a previous study. Typical one-step growth of a phage P5 selected from the citrusphages was observed. The EOP of the P5 was dependent upon the media, pH, and temperature. It was observed that multiplication of the phage cultured in Wakimotos potato semisynthetic media at $25^{\circ}C$ was more effective than that in other temperatures, regardless of the bacterial strains and media used. It was observed that pH 6.5 is optimal for multiplication of the phage. In comparison of the EOP among citrusphages $CP_1$, $CP_2$, and P5, multiplicative characteristic of phage P5 in the bacteria on time-course was similar with that of phage $CP_1$. Thus, it was concluded that citrusphage group CPK from Korea is $CP_1$ based on host specificity of the phage as described in a previous study, homogeneity, and its multiplication pattern.

• 대한한방부인과학회지
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• 제20권3호
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• pp.81-90
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• 2007

Purpose: This study was conducted to investigate the muscle anti-fatigue effects of Allii tuberosi semen after long term administration. Materials and Methods: 4-6 weeks old ICR mice were used in this study and we administered the water soluble extracts of Allii tuberosi semen in the concentration of 1, 10 and 100mg/0.3ml to each 5 mice (ATS group) and same volume of normal saline was administered to 5 mice (control group) once a day for 90 or 120 days. After the administration we performed the swimming exercise test and the grip strength test. And we measured the concentration of glucose and the activity of lactate dehydrogenase in plasma regarded as biochemical indicator related with the muscular fatigue. Results: In swimming exercise test, all ATS groups showed increased time compared with relative control group after 90 days administration. But after 120 days adminstration 10 and 100mg/0.3ml ATS groups showed increased results. In grip strength test, all ATS group increased grip strength after 90 days administration and 10mg/0.3ml ATS group showed increased result after 120 days administration. All the results of plasma glucose didn't showed statistically significant difference after 90 and 120 days administration. In the plasma concentration of activity level of lactate dehydrogenase, 1mg/0.3ml and 10mg/0.3ml ATS groups showed decreased concentration compared with relative control group after 90 days administration. But after 120 days adminstration 1mg/0.3ml ATS groups showed decreased results. Conclusion: From this study we could find the anti-fatigue effect of Allii tuberosi semen in the muscle strength related test.

• 아태비즈니스연구
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• 제11권4호
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• pp.317-332
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• 2020

Purpose - This study examines the information effect and trading behavior of investors for the 430 stock split data from January 2004 to June 2018 in the Korean stock market. Design/methodology/approach - The stock split samples are classified into two groups by split ratio as well as three groups by price level prior to split. We also investigate the trading behavior of investors categorized by institutional versus individual investors. Findings - First, we find a significantly positive information effect on the announcement day. In particular, the information effect is more distinct in the group of larger split ratio and higher price level of stocks. Second, we find a huge increase in turnover following the stock splits, which mainly results from the trading by individual investors. Also, the increase in turnover by individual investors is evident in the group of larger split ratio and higher price level of stocks. Third, the stock splits have a negative impact on the long-term stock performance. The negative buy-and-hold abnormal return(BHAR) makes no difference in the groups by split ratio as well as price level of stocks. Lastly, we find individual investors tend to buy splitted stocks, which exhibit the long-term under-performance. Research implications or Originality - The results in this paper suggest that the liquidity hypothesis is not supported in the Korean stock splits. In addition, we observe that individual investors are exposed to losses due to their unfavorable trading behavior following the stock split.

• 한국산학기술학회논문지
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• 제22권2호
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• pp.721-732
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• 2021

본 연구는 농업 R&D의 추세를 살펴보고자 텍스트마이닝 기법을 활용하여 농업 R&D에 해당하는 키워드를 분석하였다. 분석자료는 NTIS의 국가연구개발사업 과제정보를 활용하였으며, 2003년부터 2018년까지의 농업 R&D의 주요 키워드를 연도별 및 연구개발단계별로 구분하였다. 텍스트마이닝을 위해 키워드의 TF-IDF를 계산하여 점수별로 순위를 매기었으며, 유사한 키워드별로 그룹화하여 해석하였다. 주요 분석 결과는 다음과 같다. 첫 번째, 신기술의 도입과 외부 환경에 변화에 따른 농업 R&D 트렌드가 변화해가고 있다. 시간이 흐를수록 새로운 키워드가 대두되고 있으며, 기초연구 단계에서는 '기후변화'가, 응용연구 단계에서는 'ICT'와 '스마트팜'이, 개발연구 단계에서는 '수출' 키워드가 주되게 등장하고 있다. 두 번째, 연구개발 단계에서 시차를 가지고 키워드 변화가 나타나고 있다. 기초연구-응용연구-개발연구 순으로 주요 키워드가 변화하고 있으며, 대표적으로 '기후변화'와 '신품종' 키워드가 연구개발단계별로 연계되어 있었다. 세번째, 농업 R&D의 대표적인 키워드는 '벼' 키워드로 나타났다. 그러나 '녹색 및 기후변화 대응'과 '가공 및 유통기술' 같이 국내외 농업 환경 변화에 따라 연구의 방향성과 목적이 변화하고 있었다.

• 디지털융복합연구
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• 제20권5호
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• pp.173-178
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• 2022

정보기술의 발전과 다양한 관련 서비스의 보급으로, 5G와 클라우드 컴퓨팅과 같은 새로운 서비스를 통해 소비자들의 일상생활에 변화가 발생하고, 유통경로 및 비즈니스 패러다임의 디지털화 전환이 더욱 가속화되고 있다. 특히 클라우드 서비스의 정보 저장 및 관리 기능은 20-30대의 이용자들을 중심으로 널리 사용되고 보편화되었다. 따라서 본 연구에서는 클라우드 서비스의 수용 관련 사회적 요인을 중심으로, 새로운 기술에 대한 소비자들의 이용의도를 분석하고자, 20-30대의 젊은 소비자를 대상으로 연구를 진행하였다. 연구 결과는 클라우드 서비스의 수용 관련 사회적 요인과 소비자가 클라우드 서비스의 이용의도의 영향관계를 검증하였고, 사회적 요인과 이용의도 간의 영향관계에서 지각된 용이성의 부분 및 완전 매개효과도 검증하였다. 본 연구는 클라우드 서비스의 안정적이고 지속가능발전을 위한 시사점을 제시하는데 연구적 의의가 있다.

• 한국엔터테인먼트산업학회논문지
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• 제14권8호
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• pp.255-264
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• 2020

본 연구는 의료기관 인증 제도를 받은 요양병원 내부 구성원과 양방병원의 내부구성원 297명을 대상으로 설문조사를 실시한 후 SPSS 26.0을 이용하여 인증을 받은 전과 후 차이를 비교 분석하여 구성원 만족도, 직무스트레스, 의료서비스향상이 병원운영 효과에 미치는 영향을 파악하고자 하였다. 요양병원의 병원운영효과는 구성원 만족도와 의료 서비스향상이 높을수록, 병원운영효과는 높아짐을 볼 수 있으며, 양방병원의 경우, 구성원 만족도와 의료 서비스 향상이 높을수록, 직무스트레스는 낮을수록 병원운영효과는 높아짐을 볼 수 있다. 의료기관인증제도의 기본가치 체계가 환자 안전과 의료의 질 향상인 만큼 요양병원은 의무적 인증으로 인증제의 효과가 양방병원보다 높게 나타났을 것으로 사료된다.

• 한국품질경영학회:학술대회논문집
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• 한국품질경영학회 1998년도 The 12th Asia Quality Management Symposium* Total Quality Management for Restoring Competitiveness
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• pp.92-101
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• 1998

As service firms continue to seek unique sources of sustainable competitive advantage, service quality has been discussed as a potential alternative to traditional skills and sources. The information of customers is generally believed to be a key component in creating corporate responsiveness to customer requests. In order to develop and maintain long-term close relationships with customers, service firms need to build an effective and ongoing service qualify information system(SQIS). Service firms that formally collect customer-related information and internal service quality information were to be more responsive. Accordingly, the purpose of the present study is twofold. 1. How to get the information on the service quality. 2. How to build a SQIS. An analysis is conducted of SQIS into input, process and output staging. One of numerous examples from financial service-sector firms is given to show SQIS can be developed to improve service qualify. Implications and strategies for building an effective SQIS for financial service-sector firms are discussed, and directions for future research are indicated.

• Toxicological Research
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• 제18권1호
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• pp.73-77
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• 2002

The single dose toxicity of Hwangiaegongjinbo, an invigorator developed by Korea Medical Science Institute was evaluated in ICR mice and Sprague-Dawley rats. The aqueous solution of freeze-dried powder of Hwangiaegongjinbo or its original solution was once administrated orally to both sexes of mice and rats at dose of 2000 mg/kg, the recommended upper limit dose for acute toxicity. Water was administered to another group as control. after single adminstration, sign of toxicity were observed every hour for the first 6 hours and every day for 14 days. Neither sign그cant toxic sign nor death was observed during the observation period. In addition, no pathological changes were noticed in macroscopic examination at necropsy in those treated group. These results indicated that $LD_{50}$ of Hwangiaegongjinbo is greater than 2000 mg/kg in ICR mice and Sprague-Dawley rats.

• 한국식생활문화학회지
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• 제31권2호
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• pp.121-130
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• 2016

This study attempted to understand the fast food brand personality in the domestic dining market to present the repositioning strategies within the competitive market. Positive analysis results were as follows. First, the five brand individualities of 'familiarity', 'passion', 'professionalism', 'reliability', and 'refinement' were derived. Second, the deductions made on perceptions of the population using a Biplot based on the brand personality showed that there were significant differences among the brand personality images of the brands, which were the targets of comparison. Third, there were significant between-group differences in the comparisons of perception among the subgroups according to gender, brand reliability, and brand satisfaction. Fourth, there were significant between-group differences in the consumer fast food brand preferences and ideal point. Such studies can provide information useful for establishing marketing differentiating strategies by grasping the brand personality of competing brands in the market.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2010년도 추계학술대회
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• pp.170-176
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• 2010

해양사고 발생시 효율적인 대응을 위한 정보지원시스템을 연구하였다. 미국을 중심으로 현재 개발되어 운영 중인 해양사고 대응 지원 정보시스템의 사례를 연구하였으며, 국내 해양사고 발생시 활용할 수 있는 정보시스템의 현황을 검토하였다. 국내외 사례 검토를 통하여 외국 시스템과 국내 시스템의 차이 및 시사점을 분석하였으며, 국내 시스템의 향후 개발방안을 고찰하였다. 또한 국내 해양사고 대응 정보시스템의 개발 및 효율적 운영을 위한 기반 구축 및 체제 정비 방안을 제시하였다.