• Korean Journal of Childcare and Education
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• v.11 no.2
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• pp.151-175
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• 2015

This study configured an integrated math program in which young children can directly participate through storytelling, a teaching technique that has recently earned great popularity. The purpose of the study is to have a positive effect on their mathematical disposition and self-efficacy through the adoption of this program. The program consists of the following five themes: 'understanding of the basic concept of numbers and calculation', 'understanding of the basic concept of space and figure', 'basic measurement', 'understanding of rules' and 'basic data collection and result representation'. The specific activities for each theme planned and executed according to a detailed plan were designed for 20 classes including integrated activities such as story sharing, fine arts and games. The study's participants were 48 five-year old children. The result of the research was that the experimental group's mathematical disposition and self-efficacy score was significantly higher than the control group. The Storytelling-Integrated Math Program was effective in young children's cultivating mathematical disposition and improving self-efficacy. Considering the reality that there has been some confusion and difficulty in carrying out storytelling math and an integrated math program based on the NURI curriculum, it appears that this study could provide a specific and effective teaching-learning program to teachers who want to introduce a program like this.g

• Journal of the Korea Society of Computer and Information
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• v.18 no.9
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• pp.21-31
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• 2013

ECU(Electric Control Unit) on the important features of the vehicle is equipped, ECU between sending and receiving messages is connected to one of the internal network(CAN BUS), but this network easily accessible from the outside and not intended to be able to receive attacks from an attacker, In this regard, the development of tools that can be used in order to verify the possibility of attacks on attacks from outside, However, the time costs incurred for developing tools and time to analyze from actual car for CAN messages to be used in the attack to find. In this paper, we want to solve it, propose a method to generate test cases required for the attack is publicly available tool called Sulley and it explains how to find the CAN messages to be used in the attack. Sulley add the CAN messages data generated library files in provided library file and than Sulley execute that make define and execute file conform to the CAN communication preferences and create message rules. Experiments performed by the proposed methodology is applied to the actual car and result, test cases generated by the CAN messages fuzzing through Sulley send in the car and as a result without a separate tool developed was operating the car.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.10
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• pp.4619-4628
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• 2012

The purpose of this study was to investigate the relationship between alcohol use and drinking problems among college students. Data were collected by structured questionnaires from 400 college students by convenient sampling methods from September 26 to October 14, 2011. Data were analyzed by SPSS/WIN 15.0 program. The results were as follows: According to the Alcohol Use Disorder Identification Test (AUDIT), subjects were classified into four groups such as 40.2% of no problem, 36.7% of drinking problem, 6.8% of high risk drinking problem and 16.3% of alcohol dependence. The alcohol use and drinking problems were significant difference for gender, age, type of residence, age of first drinking, cause of drinking, frequency and amount of drinking. The alcohol use was correlated with drinking problems: social function impairment(r=.601, p<.01), behavior problem(r=.579, p<.01), family and interpersonal impairment(r=.637, p<.01). The influencing factors of drinking problems were alcohol use(${\beta}$=.640, p=.000). This study concludes that it is necessary to establish alcohol use policies on campus and develop temperance education program to reduce alcohol consumption and drinking problems.

• Journal of the Korean Society for Library and Information Science
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• v.51 no.4
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• pp.161-181
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• 2017

The present study aimed at investigating health information seeking behaviors of health information consumers who changed their health behaviors by using mobile health applications according to the dynamic stages of change. For this purpose, the study analyzed the changes of perception, health information needs and seeking behaviors of health information consumers in each stage by employing Stages of Change as a theoretical framework. A total of 30 college students participated in this study to change health behaviors such as smoking or alcohol cessation, and regular exercise, while using health applications for 3 months; then written interviews were conducted with these students based on their experiences. Findings indicated that the study participants used diverse information sources, including social media and the Internet, seeking for different types of sources of information according to information needs. Above all, the health information needs and seeking behaviors examined in active utilization of health applications by consumers in the stage of action suggest the implications of health information services, particularly through health applications. In addition, stress management and relapse that consumers experienced while attempting health behavior changes, and the positive and negative effects of behavior changes inform health information providers of insights for supporting consumers' changes of health behaviors.

• Korean Journal of Food Science and Technology
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• v.29 no.2
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• pp.266-272
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• 1997

In order to investigate the compression and decompression properties of cucumber, radish, garlic, ginger and potato, edible parts of samples were prepared to size of ${\Phi}\;5\;mm{\times}H\;5\;mm$, and force deformation relationship during application and removal of force were observed. Compositions of sample and cell characteristics were measured, and correlations between them were investigated. Deformation rate was large in initial stage of compression and decreased afterward, but the reverse trends were observed in the decompression. The time and deformation to 9 N were large of 5.30 sec and 1.344 mm in potato, and small of 4.62 sec and 0.896 mm in garlic, respectively. Force(y)-deformation(x) curve between compression and decompression were clearly showed hysteresis loop and relationship of x and y were as follows: y=esp (a+b log(x)). The maximum work was $3.888{\sim}5.099{\times}10^{-3}\;J$ for potato in compression and $2.09{\times}10^{-3}\;J$ for garlic in decompression. Irrecoverable work were large as $77{\sim}96%$ in cucumber, radish and potato, and small as $36{\sim}42%$ in garlic. Compression deformation were large as $1.016{\sim}1.344\;mm$ in potato, and small as $0.656{\sim}0.896\;mm$ in garlic. Degree of elasticity were large as $0.756{\sim}0.777$ in garlic, and small as $0.301{\sim}0.465$ in radish and potato. Compression and decompression characteristic values were showed high correlation with moisture, viscosity of juice, ceil size, density and regularity.

• International Commerce and Information Review
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• v.13 no.3
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• pp.433-457
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• 2011

This study attempts to make a constructive contribution to the debate on which WTO rules accommodate trade measures for environmental purposes. Does trade undermine the regulatory efforts of governments. However, the theoretical dimensions are partly addressed on the several key questions. For instances, is economic integration through trade and investment a threat to the environment? to control pollution and resource degradation? Will economic grow driven by trade help us to move towards a sustainable use of the world's environmental resources? The growing world economy has been accompanied by environmental degradation including deforestation, losses in bio-diversity, global warming, air pollution, depletion of the ozone layer, overfishing and so on. The sheer number of us obviously put pressure on natural resources and ecological systems, and this pressure will counting to rise as we grow towards 10 billion in the next century. What is more, there is no indication that consumption per capita is slowing. The perceived costs of acting alone in terms of lost investments and jobs often take the stream out of regulatory initiatives. In the worst case scenario environmental community is fearful that international trade will magnify the effects of poor environmental polices in the world Generally, economic growth drive by trade may speed up the process of environmental degradation unless sufficient environmental safeguards are put in place. Under these circumstances, this paper attempts to make a constructive contribution to the study on which WTO rules accommodate trade measures for environmental purposes.

• KIPS Transactions on Software and Data Engineering
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• v.7 no.3
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• pp.77-90
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• 2018

Software Defect Prediction (SDP) is a field of study that identifies defective modules. With insufficient local data, a company can exploit Cross-Project Defect Prediction (CPDP), a way to build a classifier using dataset collected from other companies. Most machine learning algorithms for SDP have used more than one parameter that significantly affects prediction performance depending on different values. The objective of this study is to propose a parameter selection technique to enhance the performance of CPDP. Using a Harmony Search algorithm (HS), our approach tunes parameters of cost-sensitive boosting, a method to tackle class imbalance causing the difficulty of prediction. According to distributional characteristics, parameter ranges and constraint rules between parameters are defined and applied to HS. The proposed approach is compared with three CPDP methods and a Within-Project Defect Prediction (WPDP) method over fifteen target projects. The experimental results indicate that the proposed model outperforms the other CPDP methods in the context of class imbalance. Unlike the previous researches showing high probability of false alarm or low probability of detection, our approach provides acceptable high PD and low PF while providing high overall performance. It also provides similar performance compared with WPDP.

• The KIPS Transactions:PartD
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• v.13D no.1 s.104
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• pp.67-74
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• 2006

The security requirements identification in the software development has received some attention recently. However, previous methods do not provide clear method and process of security requirements identification. We propose a process that software developers can build application specific security requirements from state transition diagrams at the security threat location. The proposed process consists of building model and identifying application specific security requirements. The state transition diagram is constructed through subprocesses i) the identification of security threat locations using security failure data based on the point that attackers exploit software vulnerabilities and attack system assets, ii) the construction of a state transition diagram which is usable to protect, mitigate, and remove vulnerabilities of security threat locations. The identification Process of application specific security requirements consist of i) the analysis of the functional requirements of the software, which are decomposed into a DFD(Data Flow Diagram; the identification of the security threat location; and the appliance of the corresponding state transition diagram into the security threat locations, ii) the construction of the application specific state transition diagram, iii) the construction of security requirements based on the rule of the identification of security requirements. The proposed method is helpful to identify the security requirements easily at an early phase of software development.

• Journal of KIISE:Software and Applications
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• v.35 no.9
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• pp.562-571
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• 2008

For the purpose of building domain ontology, this paper proposes a methodology for building core ontology first, and then enriching the core ontology with the concepts and relations in the domain thesaurus. First, the top-level concept taxonomy of the core ontology is built using domain dictionary and general domain thesaurus. Then, the concepts of the domain thesaurus are classified into top-level concepts in the core ontology, and relations between broader terms (BT) - narrower terms (NT) and related terms (RT) are classified into semantic relations defined for the core ontology. To classify concepts, a two-step approach is adopted, in which a frequency-based approach is complemented with a similarity-based approach. To classify relations, two techniques are applied: (i) for the case of insufficient training data, a rule-based module is for identifying isa relation out of non-isa ones; a pattern-based approach is for classifying non-taxonomic semantic relations from non-isa. (ii) For the case of sufficient training data, a maximum-entropy model is adopted in the feature-based classification, where k-NN approach is for noisy filtering of training data. A series of experiments show that performances of the proposed systems are quite promising and comparable to judgments by human experts.

• Journal of the Korea Organic Resources Recycling Association
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• v.24 no.4
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• pp.105-112
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• 2016

The drying test was carried on the globular type cow manure pellet for use in solid fuel applications. The globular type cow manure pellet fuel was sorted according to size by rotatory sieves. The three kind of drying methods such as convection hot-air drying method, infrared ray drying method and superheated steam method were used to dry the globular type cow manure pellet. Among the three kind of drying methods, superheated steam method of dry time was the shortest. The apparent specific gravity and low calorific value of dried cow manure pelltes was about $250{\sim}350kg/m^3$ and above 3,000 kcal/kg respectively. The smaller the particle size of cow manure pellets, the less drying time was required. The time was required very less for drying smaller particle size cow manure pellet when compared to larger size. In the case of the same drying condition, it has been found that reducing the particle size of cow manure fuel pellet is an important factor for shortening the drying time of the livestock manure pellet.