• The Korean Journal of Pesticide Science
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• v.19 no.4
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• pp.394-398
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• 2015

This research was performed to establish economic threshold (ET) for rice sheath blight disease with the cultivar Odeabyeo. Total yield and yield components, such as the panicle number per hill, the spikelet per panicle, the percent ripened grain and the thousand grain weight were evaluated depending on the disease severity of sheath blight on rice, respectively. Significant negative correlation between the percent of diseased hill (PDH) and total yield was observed (r = -0.93). Moreover, negative correlation coefficients were found between PDH and spikelet per panicle, and percent ripened grain (r = -0.66 and -0.77, respectively). There were no correlations between PDH and the panical number per hill, and a thousand grain weight, respectively. In this study, economic threshold level on sheath blight disease on rice was established on 7.8% of PDH.

• The Journal of the Korea Contents Association
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• v.17 no.12
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• pp.77-91
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• 2017

Due to the lack of learning motivation, there is a need to seek ways to facilitate learning incentives because it's causing drop out and maladjustment of university life. This study is to examine whether the ARCS evaluation model developed by Keller (1983) is a valid model for evaluating the motivation level of local university students sample 276(male 116, female 157) in the Republic of Korea. To analyze the data, average statistic, one-way ANOVA and confirmative factor analysis were used. The conclusion of this study is as follows. First, the level of motivation per ARCS factor has demonstrated the highest relevance factor. Second, the level of motivation by the ARCS for the 1st and 3rd graders was appropriate. Differences in 'attention' and 'relevance' have only been observed for each year, and the 1st grade group was found to be larger than the 2nd grade cohort. Third, construct validity and convergent validity were obtained for measuring the level of motivation. The results of the verification of the variables also showed that the AVE and CR were met, and the model fit well was satisfactory. Based on the finding results, discussion and implication for further research were suggested.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.20 no.4
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• pp.763-768
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• 2016

IT is the information in government/public policy and technological trends in the industry's R&D has a direct impact on its investment decision making of the very important information. Due to the nature of the information in this technical trend because essential information on open public data the technology by government departments and public institutions that are responsible for producing, on an ongoing basis. In this paper, it was confirmed through the experiment that the method and the possibility to integrate the technology trend information provided by the various agencies can be diagnosed as a maturity level. Also we propose a data collection and processing, storage, optimized service for technical maturity of diagnostic methods. The proposed method determines the overall system configuration and service data ITFIND overall maturity level diagnosis is enabled by leveraging the collected. In addition, through the compensation is considered to be able to proceed to a more accurate diagnostic level.

• The Journal of Korean Association of Computer Education
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• v.6 no.2
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• pp.121-135
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• 2003

This paper proposes a web-based adaptive tutoring system based on fuzzy set that provides learning materials and questions dynamically according to students' knowledge state, and gives advices for the learning after an evaluation. For this, we design a courseware knowledge structure systematically and then construct a fuzzy level set on the basis of it considering importance of learning targets, difficulty of learning materials and relation degree between learning targets and learning materials. Using the fuzzy level set, our system offers learning materials and questions to adapt to individual students. Moreover, a result of the test is evaluated with fuzzy linguistic variable. Appling the fuzzy concept to the tutoring system could naturally consider and deal with various and uncertain items of learning environment thus could offer more flexible and effective instruction-learning methods.

• Journal of Digital Convergence
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• v.12 no.7
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• pp.349-356
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• 2014

The present study was aimed to investigate the effects of the application of pulsed electromagnetic fields on the blood components associated hyperlipidemia, antioxidant enzymes and reactive oxygen. The subjects were divided into three groups: General Diet, High fat Diet, High fat diet and pulsed electromagnetic fields. Pulsed electromagnetic field was applied with pulsed electromagnetic energy therapy equipment. The Glucose, free fatty acids, triglycerides, cholesterol and insulin was used to measure hyperlipidemia-related blood components, and the GSH, GRD, XO and MDA was used to measure antioxidant enzymes and reactive oxygen. The applied pulsed electromagnetic field has improved the concentrations of blood components and increasing GSH and GRD, that were decreased due to a high-fat diet and by reducing the increased MDA and XO to a level of general diet group. Therefore, the applied pulsed electromagnetic field can be the effective treatment for changes in the blood composition of hyperlipidemic rats, enhancement of antioxidative activity and the inhibition of reactive oxygen.

• Journal of The Korean Association of Information Education
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• v.5 no.2
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• pp.268-278
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• 2001

This study is design and implementation of diagnosis module using item response theory to assess level of student's knowledge in web-based instruction systems. Item response theory uses responses to items on a test or survey questionnaire to simultaneously locate both the items on the latent trait defined by the set of items while simultaneously scaling each item on the very same dimension. Existing method of measurement in web-based instruction system provided dichromatic learning after to be assess just with the total scores of exam. This measurement has an error that do not consider the level of student's knowledge. Moreover, this method can't perform an exact diagnosis of student knowledge and make student modeling to construct intelligent tutoring system. In this study, we present that design and implement a diagnosis module using item response theory to assess level of student's knowledge in web-based instruction systems

• Convergence Security Journal
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• v.6 no.4
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• pp.101-112
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• 2006

It will not be able to guarantee the secure operation for the information and communication systems with only technical security. So, ISMS(Information Security Management System) research and standardization are active going on. Korea published "The national cyber security management regulation" and "The national cyber security manual" in 2005. According to the regulation and manual, the government organ and public institution must accomplish the security management assessment to itself for systematic management of an information security. We studied related standards and security management systems of the Australia and the USA, and analyzed the security management evaluation system in "The national cyber security manual" in efficient security management focus. We presented the improvement direction of national security evaluation system through the research. We propose the additional control, selective control set and improvement of the evaluation process for efficient security management. Proposed system possible composition of suitable to each organ and flexible adaptation of rapidly changed information environment.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.8
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• pp.5372-5383
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• 2015

The purpose of the present study was to figure out the effects of the result variables of hospital employees' conflicts on organizational effectiveness variables such as job satisfaction and organizational commitment. The present study was conducted with 305 subjects. The correlations among conflict, job satisfaction, and organizational commitment levels by conflict factor and by conflict type were analyzed using correlation analyses and multiple regression analyses were conducted to examine the effects of intra-organizational conflicts on conflict results while general and job related characteristics variable were controlled. According to the results of analyses, conflicts due to job satisfaction factors such as communication, leadership, and personality had significant negative effects on overall, intrinsic, and extrinsic job satisfaction levels and organizational commitment factors such as interdependence, leadership, and personality were significant conflict variables. By type, horizontal conflicts affected job satisfaction while vertical conflicts affected organizational commitment. When intra-organizational conflict levels were higher, job satisfaction and organizational commitment levels were lower and when job satisfaction levels were higher, organizational commitment levels were also higher

• Journal of Digital Convergence
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• v.11 no.3
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• pp.127-138
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• 2013

The age of social network has arrived. Social media is the various online media for sharing of opinions and experiences and open for internet users' participation. As the new communication tools, social media has been in the limelight, threatening the traditional media as alternative media. In globalization, country image is seen as the source of competitiveness of a country. The goal of this study is to examine what impact does the utilization of social media has on country image, and we conducted our analysis in two aspects of social media utilization, usage volume and usage diversity. In addition, we examined the impact of factors that form the country image on purchase intention. The analytical results show that media usage volume positively affects country image, people image, political image and media usage diversity has significant effects on economical image, people image and political image.

• Journal of Digital Convergence
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• v.16 no.7
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• pp.479-491
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• 2018

This study aims to figure out factors influencing health and moderating effect of social support resource between those factors and health of low income women in diverse spheres. The data of low income women were 239 cases and were utilized SPSS ver. 21 program. The main results of this study are as follows: firstly, health of low income women is identified medium level. Secondly, education level, self-efficacy and social support resource are related to the self-rated health of low income women. Especially, social support resource functions as moderators on between education and self-rated level of the health of low income women. Consequently, the findings suggest the need to expand the social intervention range to promote health of low income women from cost benefit to psychological support such as capacity building for self-management and establishment of safety-net to extend social support. And subsequently, the time attribute of the factors related to low-income women's health and the diverse characteristics of the subjects should be considered.