• 식물병연구
• /
• 제22권3호
• /
• pp.190-193
• /
• 2016

In 2010 and 2012, damping-off symptoms were found on melon seedlings grown in Yeongam and Suncheon, Korea. Water-soaked and discolored lesions appeared on the lower stems of the infected plants. The diseased plants became wilted and stunted, and eventually collapsed. On the basis of morphological characteristics and molecular analyses of internal transcribed spacer (ITS) rDNA and cytochrome oxidase II (cox2) sequences, the causal organism was identified as Pythium spinosum. The isolates were pathogenic to melon under pot conditions. To our knowledge, this is the first report of P. spinosum causing damping-off on melon in Korea.

• 대한가정학회지
• /
• 제33권3호
• /
• pp.179-191
• /
• 1995

The purpose of this study was to investgate consumer problems which were severe for consumers and their complaining behavior. This research had a purpose to enhance the ability of consumer protection by the well-developed consumer education. The subjects were 342 homewives in Seoul, Feb. 1995. The major results were as follows : Younger, higher-educated, small sized family and white-collor and professional occupation homewives experienced more consumer problems. Also theses homewives with higher level of consumer attitude, information search and more consumer problems had more complaining behavior. For the causal relation of consumer problems experience, several independent variables and consumer complaining behavior, the path analysis was used. Only the consumer problem experience which was a intervening variable had direct affect to the consumer complaining behavior. Education level, number of family, consumer knowledge had inderect affect through the intervening variable to the consumer complaining behavior.

• Mycobiology
• /
• 제44권4호
• /
• pp.330-334
• /
• 2016

In 2010, disease symptoms, including necrotic lesions on stems and leaves with circular yellow-brown or irregular brown color patches, were observed on cool-season turfgrass at golf courses (OHCC) and the Daegu University research farm in Gyeongbuk, Korea. We isolated the causal agent and identified it as Waitea circinata var. zeae by morphological characterization and molecular analysis. To the best of our knowledge, this is the first report of brown patch caused by W. circinata var. zeae on cool-season turfgrass in Korea.

• 한국산학기술학회:학술대회논문집
• /
• 한국산학기술학회 2001년도 추계산학기술 심포지엄 및 학술대회 발표논문집
• /
• pp.139-143
• /
• 2001

본 연구는 사출성형에서의 리브설계를 합리적으로 수행하기 위한 방법론과 프로그램에 관한 것이다. 리브는 몰드금형에 있어서 복잡한 코아와 캐비티 형상을 초래하게 되는 원인이 된다. 리브는 조림, 보강, 유동성 중대 등의 목적으로 사용되며 이를 적절하게 설계하기 위해서는 고분자 재료 물성, 사출성형공정에서의 열기계적 변화, 성형성 등 많은 지식을 필요로 한다. 이러한 리브의 설계를 합리적으로 수행하기 위한 프로그램 제작에 관한 사항을 논의하였다.

• 한국균학회지
• /
• 제49권3호
• /
• pp.417-423
• /
• 2021

Apple decline symptoms were frequently observed on cv. Fuji apple orchards located in Gyeonggi, Gyeongbuk, and Gangwon provinces during surveys conducted from May until the end of September 2020. Three fungal strains were isolated from the margins of internal lesions of diseased apple trees, and their morphological characteristics were considered similar to Botryosphaeria sinensis. Phylogenetic analysis using internal transcribed spacer (ITS) regions, translation elongation factor 1-alpha (tef1), beta-tubulin (tub2), and the second largest subunit of RNA polymerase II (rpb2) gene sequences confirmed the closest relationship of isolates with B. sinensis at the species level. According to a pathogenicity test, the appearance of dark-brown discolorations and vascular necrosis on apple branches inoculated with the isolated strain KNUF-20-014 was observed. To the best of our knowledge, this is the first report of B. sinensis as the causal agent of apple disease in Korea.

• Mycobiology
• /
• 제48권6호
• /
• pp.522-527
• /
• 2020

Plum pocket caused by the dimorphic ascomycetous fungi, Taphrina spp., results in unsightly malformations and crop loss. In 2016, Japanese plums (Prunus salicina Lindl.) with plum pocket symptoms were found in Gimcheon. Three isolates were collected from symptomatic P. salicina fruits and identified as Taphrina deformans based on morphological characteristics and molecular sequence analysis of including internal transcribed space (ITS) and the mitochondrial small ribosomal subunit (SSU) regions of the three isolates. Pathogenicity test on plum fruits confirmed that, the present T. deformans isolates are causal agent of plum pocket. To the best of our knowledge, this is the first report of plum pocket caused by T. deformans in South Korea.

• 한국의료질향상학회지
• /
• 제29권2호
• /
• pp.85-93
• /
• 2023

Purpose: The predominant approach for mitigating inadequate sampling rates has primarily involved bolstering the volume of education. This study aimed to curtail inadequate sampling rates through the implementation of continuous quality improvement (CQI) activities, tailoring effective methods to the unique needs of each institution. Methods: We developed a sample handling guidebook and implemented QI activities to address this issue. Results: These measures resulted in a 4.7% decrease in inadequate sampling rates, concurrently improving knowledge of sample handling and overall nurse satisfaction. We addressed the root causes of inadequate sampling before laboratory pre-processing by: 1) focusing on systematic rather than erratic errors through CQI activities, 2) revising the sample handling guide, and 3) delivering face-to-face education based on the specific needs of the nursing department. These changes resulted in an additional 0.6% decrease in the inadequate sampling rate. Conclusion: This study demonstrates that the implementation of CQI activities based on evidence derived from a multifaceted causal analysis significantly reduced the inadequate sampling rate compared to previous studies.

• 한국정보시스템학회지:정보시스템연구
• /
• 제16권1호
• /
• pp.179-200
• /
• 2007

In this research, we study how task and KMS fit influences on KMS performance in large corporations during its practical use. Based on the task-technology fit theory and information system success model, we developed a research model by considering the characteristics of KMS for supporting tasks. We try to verify how individual traits, task traits, and KMS Units affect task-KMS fit and how task KMS fit influences on KMS performance. We surveyed 212 employees who were using KMS and working for the large-sized manufacturing firms. We analyzed the collected data from LISREL 8.54 for Windows, and found the following significant results. First user satisfaction is increased when KMS provides knowledge to help to perform task rather than KMS' functionality. Second, user satisfaction is increased when KMS is suitable for performing task Hence, we verified task-KMS fit is an antecedent of user satisfaction. Third, task-KMS fit and user satisfaction have significant impacts on KMS performance. And user satisfaction affected more heavily on KMS performance than task-KMS fit did. As a result, we realized an individual performance can be improved when task KMS fit is high and, consequently, user satisfaction is increased. Forth while the usefulness of task-KMS fit is demonstrated, causal factors such as individual traits, task traits, and KMS traits significantly affect task-KMS fit. Formalization and knowledge trait we significant in enhancing user satisfaction, but KMS self-efficacy, autonomy, md system trait are not. These results indicate that task-KMS fit variable is useful as a measure of KMS performance as well as that of user satisfaction. Based on these results, we conclude that when KMS supports task activity, performance can be significantly improved by coordinating the task with KMS.

• 한국산학기술학회논문지
• /
• 제10권8호
• /
• pp.2068-2077
• /
• 2009

6시그마 프로젝트 관리 시스템은 6시그마 추진기업의 지식경영 시스템으로 활용되어 왔지만 벨트의 프로젝트 관리 시스템 활용이 프로젝트 성과에 미치는 영향에 대한 실증적 연구는 전무한 상황이다. 따라서 본 연구는 6시그마 프로젝트 관리시스템의 활용이 프로젝트 균형 성과지표에 미치는 영향을 구조방정식 모형을 통해 실증적으로 분석하였다. 연구 자료의 결과에 의하면 프로젝트 시스템의 활용은 6시그마 프로젝트 학습과 성장관점에 영향을 미치고, 학습과 성장 관점은 내부 프로세스 관점과 고객관점에 영향을 미치는 결과로 나타났다. 내부 프로세스는 고객관점 지표에 영향을 미치고 고객관점 지표는 재무성과에 영향을 미치는 분석의 결과가 도출되었다. 내부 프로세스는 재무성과에 직접적인 인과관계가 없는 것으로 귀결되었다. 연구모형과 더불어 대안모형 분석이 추가로 이루어졌는데 연구모형이 대안모형보다 모형 적합도에서 나은 것으로 나타났다.

• 유통과학연구
• /
• 제14권11호
• /
• pp.129-138
• /
• 2016

Purpose - The ICT(information and communications technologies) development is affecting consumer behaviors on selecting channel or distribution system. This study aims to advance our knowledge about the factors influencing omni-channel behaviors. This study considers the positive brand experience as the moderating variable into the relationship between omini-channel use intention and consumer brand relation. Also, the effect of positive brand experience on consumer-brand relation is researched. Research design, data, and methodology - This study conducted an empirical test with the subject as customers who purchase goods or service through on-off cross channel simultaneously. The research model is developed from prior literatures about influencing variables on channel selection. The structure of this study is designed to identify causal relationships between the variables. 268 survey data from the questionnaire survey which is conducted to target customers who use online and offline channels, is used for empirical analysis. This study validates generality with descriptive statistics and data reliability with Cronbach's alpha value. The exploratory factor analysis is used for value purification. Then, the confirmatory factor analysis is conducted for structural equation modeling. Finally, the execute structural equation modeling is analyzed to confirm the hypotheses Results - First, the two causal influences between perceived performance risk and the propensity of omni-channel and between price consciousness and the propensity of omni-channel are verified through the empirical test. Second, the result identifies that the propensity of omni-channel is influenced on consumer-brand relationship. Third, the AMOS analysis proves that the moderating variable, positive brand experience, has significant positive impact on consumer-brand relationship. This significant relationship is highly supported by the regression analysis between brand experience and propensity of omni-channel because it results that positive brand experience has positive impact on the propensity of omni-channel. All hypotheses are verified to be true. Conclusions - Based on the empirical result, this study confirms that perceived performance risk and price consciousness are the important factors influencing propensity of omni-channel. According to the additional analysis, the moderating variable and positive brand experience plays important role between the propensity of omni-channel and consumer-brand relationship. Furthermore, positive brand experience influences more on consumer-brand relationship than non-positive brand experience.