• The KIPS Transactions:PartD
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• v.16D no.1
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• pp.83-92
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• 2009

Complicated business logic makes program complexity more complicated. It's inevitable that the program must undergo reengineering processes all the way of in its lifetime. Hot spot analysis that has diverse purposes is getting an important question more and more. As a rule, reengineering process is done by UML model-based approach to analyze the legacy system. The smallest fragment of targets to be analysed is unit, that is function or class. Today's software development is to deal with huge change of software product and huge class including heavy quantity of LOC(Lines Of Code). However, analysis of unit is not precise approach process for reliable reengineering consequence. In this paper, we propose very precise hot spot analysis approach using Aspect-Oriented Programming languages, such as AspectJ. Typically the consistency between UML and source is needed code to redefine the modified library or framework boundaries. But reengineering approach using AOP doesn't need to analyze UML and source code. This approach makes dynamic event log data that contains detailed program interaction information. This dynamic event log data makes it possible to analyze hot spot.

• Korean Journal of Remote Sensing
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• v.39 no.5_2
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• pp.811-825
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• 2023

In accordance with the government's stance of actively promoting intelligent administrative service policies through data utilization, in the disaster and safety management field, it also is proceeding with disaster and safety management policies utilizing data and constructing systems for responding efficiently to new and complex disasters and establishing scientific and systematic safety policies. However, it is difficult to quickly and accurately grasp the on-site situation in the event of a disaster, and there are still limitations in providing information necessary for situation judgment and response only by displaying vast data. This paper focuses on deriving specific needs to make disaster situation management work more intelligent and efficient by utilizing intelligent information technology. Through individual interviews with workers at the Central Disaster and Safety Status Control Center, we investigated the scope of disaster situation management work and the main functions and usability of the geographic information system (GIS)-based integrated situation management system by practitioners in this process. In addition, the data built in the system was reclassified according to purpose and characteristics to check the status of data in the GIS-based integrated situation management system. To derive needed to make disaster situation management more intelligent and efficient by utilizing intelligent information technology, 3 strategies were established to quickly and accurately identify on-site situations, make data-based situation judgments, and support efficient situation management tasks, and implementation tasks were defined and task priorities were determined based on the importance of implementation tasks through analytic hierarchy process (AHP) analysis. As a result, 24 implementation tasks were derived, and to make situation management efficient, it is analyzed that the use of intelligent information technology is necessary for collecting, analyzing, and managing video and sensor data and tasks that can take a lot of time of be prone to errors when performed by humans, that is, collecting situation-related data and reporting tasks. We have a conclusion that among situation management intelligence strategies, we can perform to develop technologies for strategies being high important score, that is, quickly and accurately identifying on-site situations and efficient situation management work support.

• Journal of Convergence for Information Technology
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• v.8 no.3
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• pp.175-181
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• 2018

The purpose of this study is to explore the educational needs of learning supporting program on the students' perception of current competencies and important competencies. The data was collected by using the online type (e-mail survey) and the offline type (printed survey) with survey instrument developed by researcher. Survey instrument was composed of 3 categories and 10 competencies. Collected data was analyzed using the SPSS 21.0 for Windows statistical package. And 159 cases were analyzed finally. The paired t-test was conducted to analyze the difference between importance-performance of students' competencies. The educational needs of learning supporting program were calculated by using the Borich's formula. The findings were as follows: The first, 3 categories and 10 competencies were significant difference exists statistically. The second, The high ranks of the educational needs of learning supporting program were 'Major field knowledge', followed by 'Creativity', 'Problem solving ability', 'Global capability', 'Technology capability' in sequence. The results of this study reflected the authentic needs of students will be used a basic data to establish the curriculum for learning supporting program.

• Journal of Korean Library and Information Science Society
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• v.52 no.3
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• pp.177-196
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• 2021

The purpose of this study is to analyze priorities of competencies and to find the direction of development of teacher librarian training and retraining program. A total of 238 subjects were used for the final analysis. They were analayzed using IPA, Borich's needs analysis and the Locus for Focus model. As a result, First, teacher librarians perceived that the importance and performance of teacher and manager competency were higher than information specialist and cooperative leader. Second, they needed competencies of data-science, coding, Internet of Things in the field of information specialist as changing educational environment. Third, they needed competencies of information ethics, copyright instruction, and digital and media literacy education in the field of teacher. Fourth, they needed competencies of facility designing for future education, online and offline school library marketing skills, and establishment of makerspaces and learning commons in the field of ibrary manager. Fifth, they needed competencies of library based instruction, library cooperative instruction, and building a collection related to subject in the field of cooperative leader. Sixth, the highest required competency for teacher librarians was suggested for teacher librarians' role area.

• Annual Conference of KIPS
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• 2015.04a
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• pp.396-398
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• 2015

IoT 환경에서 무선랜의 사용률은 매년 증가하고 있고 그에 따른 무선공유기의 보안은 매우 중요함에도 불구하고 다수의 사용자들은 보안수용성이 낮은 것으로 조사되어 이에 대한 연구를 진행 하였다. 본 논문은 한국 사용자들의 무선공유기 활용도를 조사하고, 보안수용성과의 연관성을 분석하여 보안수용성의 향상을 위한 방안을 제시하는데 목적이 있다. 본 논문의 조사에 따르면 대부분의 사용자들은 무선공유기에 대한 보안수용성이 부족하며 간단한 보안방법 조차 실행하지 않았다. 이를 바탕으로 사용자의 보안수용성은 현재 매우 낮다는 것을 알 수 있으며 보안수용성의 향상을 위한 가이드라인을 제시하였다. 본 논문은 사용자들에게 보안의식을 심어주고 보안에 쉽게 접근하게 할 수 있는 보안수용성 향상의 기반으로 유용하게 사용 할 수 있을 것으로 기대된다.

• Journal of Korean Elementary Science Education
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• v.43 no.1
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• pp.95-107
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• 2024

In this study, we explored the mediating effect of grit in the relationship between elementary school science teachers' perceived personal pedagogical content knowledge (pPCK) and enacted pedagogical content knowledge (ePCK). Drawing on insights from a review of the literature, we developed a research hypothesis model that set pPCK, ePCK, and grit as latent variables. Pearson correlation was conducted to examine the interrelationships among the latent variables. Structural equation modeling (SEM) was then employed to analyze the model fit. Additionally, bootstrap analysis was performed to specifically investigate the mediating effect of grit in the relationship between pPCK and ePCK. The Pearson correlation analysis indicated statistically significant correlations among the measurement variables. Meanwhile, the SEM analysis revealed that the measurement model aligned with the research hypothesis model. Furthermore, the bootstrap analysis demonstrated that grit had a statistically significant mediating effect in the relationship between elementary school science teachers' perceived pPCK and ePCK. These findings quantitatively examine the importance and impact of grit in the teacher expertise domain, providing valuable insights for the development of teachers' expertise and teacher education research within elementary school science classes.

• Journal of Korea Technology Innovation Society
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• v.21 no.1
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• pp.92-129
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• 2018

In general, a technology and innovation strategy has been established first. Then, the technology and innovation activities are conducted accordingly. The literature on the technology management process points out that the technology and innovation activities exist in some sequences, nonlinear or linear pattern. However, it is also argued that a certain technology and innovation activity can be occurred or disappeared at certain timing. In this paper, it has been analyzed and clarified how the technology and innovation activities are performed and working together with the technology and innovation strategies in certain context especially when the handset market moves from feature phone to smartphone during a last decade. Empirical results show that the starting point of the technology and innovation activity changes according to the technology and innovation strategies. And, technology innovation activities exhibit multi-layer architecture types. It is confirmed that technology and innovation activities follow a specific pattern. However, if there are some changes in the technology and innovation strategy due to the external environment change, some technology and innovation activities can be skipped because the priority of the technology and innovation activities would be changed. If the firm which has the strategy type of 'innovators' fails to adapt to the fast changing external environment and has the inadequate technology and innovation activities, it is required to change the technology and innovation strategy. It will have a huge impact on the firm's survival.

• Proceedings of the Korea Water Resources Association Conference
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• 2019.05a
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• pp.239-239
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• 2019

상수도시설 중 배수관망시설은 해당 지역의 영향을 민감하게 받는 시설이므로 설계시 해당시설의 특성을 충분히 고려해야 한다. 배수시설은 설치된 해당지역에 따라 그 특성이 매우 다르기 때문에, 설계지표 또한 해당 도시마다 다르게 설정될 수 있다. 도시의 규모가 크거나, 그 특성이 해당 구역에 따라 다른 경우에는 같은 도시의 경우라도 대상구역에 따라 다른 지표를 사용하는 경우도 있다. 따라서 이런 상수도관망의 설계 및 관리를 위해서는 장기간 현장여건에 맞는 관측자료를 통한 정밀한 수리분석이 요구되며 국내의 경우 일반적으로 Hazen-Williams 공식을 사용하고, 이때 관내면의 마찰손실계수 C는 유속계수라 한다. 이러한 유속계수는 상수관로의 물리적 특성을 나타내며 관로 내의 흐름해석, 펌프 및 관로의 설계, 최적 운영 방안, 통수능력 및 관 노후도 평가 등에 사용되거나 영향을 미치는 중요한 요소라 평가되고 있다. 또한 다수의 현장 관측 자료를 확보하여도 분기 구간과 펌프 및 밸브 등으로 인한 손실 등의 오차가 발생하므로 유속계수 산정 시 발생되는 많은 오차들을 줄여 보다 신뢰성 있는 유속계수를 산정해야 하고, 현장 관측 자료를 이용하여 유속계수를 산정하기 어려운 구간에 대해서는 관망해석 모델링을 통하여 결정하고 있다. 본 연구에서는 전주권 광역상수도의 계통 특성에 맞는 관로의 유속계수를 결정하기 위해 관리주체에서 기존에 설치한 수압계와 유량계 및 관망도를 이용하여 기초자료를 수집하고 Hazen-Williams 공식을 이용하여 유속계수를 산정하였다. 계산된 상수관로 유속계수는 전주시의 10개 계통에서 최소 107.06, 최대 145.02, 평균 127로 계산되었으며, 유속계수에 영향을 미치는 물리적 요소들의 관계를 파악하고자 상관성 분석 실행하였다. 그 결과 관경과 경과년수의 상관계수 R은 0.011 관경과 유속계수의 상관계수는 -0.009로 두변수간의 상관성이 거의 없고, 경과년수와 유속계수의 상관계수는 -0.776로 음의 상관성을 갖는 것으로 분석되었다. 이와 같이 제시한 유속계수는 해당 지역의 참고자료나 기준으로서 활용할 수 있을 것으로 판단되며 비 대상 지역에서도 현장자료가 부족한 곳의 유속계수를 산정할 경우 보다 신뢰성 있게 유속계수를 산정할 수 있는 방법을 제시하고자 한다.

• Journal of Korea Entertainment Industry Association
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• v.15 no.2
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• pp.1-10
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• 2021

The purpose of this study is to explore a significant HPWS(High Performance Work System) model for the entertainment industry. HPWS is one of the most studied themes for managing human resources as well as a set of practices to elicit employees' commitment to an organization. Recently, the entertainment industry is growing rapidly, but it is difficult for entertainment firms to retain a stable profit unlike the manufacturing industry. This is because the performance of entertainment business tends to rely heavily on the capabilities and synergy of human resources. In order to suggest a systematic way to manage these, this research identified an effective HPWS model for entertainment business and provides a competitive advantage to entertainment firms, using ANP(Analytic Network Process). ANP is a multicriteria decision making technique that allows dependences and feedbacks among decision elements in the hierarchical or network structures in a holistic manner. The pairwise comparison data that prioritized the criteria of HPWS was collected from 28 team leaders in entertainment firms. According to our results, the most critical factor for HPWS in entertainment business is "employee involvement in decision-making." The sub-factors such as "open communication," "distributive decision-making," and "performance-driven reward" have a greater effect. These findings could provide implications for entertainment firms to determine which practices should be taken into account to accomplish HPWS.

• Journal of the Korean Society of Food Science and Nutrition
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• v.38 no.7
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• pp.862-869
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• 2009

This research was performed to acquire fundamental data to be used in developing school foodservice monitoring programs by investigating the actual operational conditions and views of dietitians and students' parents on foodservice monitoring. A questionnaire was provided to the parents and the dietitians of 100 school foodservice establishments in Ulsan area for one month (June, 2007). The questionnaires of 51 foodservice establishments from dietitians and parents were collected (response rate 51%). The collected data from the questionnaires were statistically analyzed using the SAS package program. In terms of the study subjects, 98.0% of the school foodservices were direct managed. The knowledge of HACCP of the students' parents included 'know well' (52.6%), 'know a little bit' (8.8%), and 'do not know' (38.6%). 90.2% of the subjects were monitoring school foodservice regularly. The performance rates of school foodservice monitoring by the students' parents were in the order of: inspecting food materials (95.4%), food preparation (92.7%), and cleaning and facilities sanitation (88.1%). Of the students' parent respondents, 64.1% received preliminary monitoring education regularly, in the order of inspecting food materials (70.9%), food preparation (67.5%), and cleaning and facilities sanitation (60.9%); menu planning (45.5%) was the most highly required item for preliminary education. The understanding degree, in terms of the foodservice preliminary education, was 3.10 points, and the effects evaluation scores of the preliminary education by the dietitians was 3.18 points out of 5 points. The evaluation results for both the importance and performance about the foodservice monitoring items, as evaluated by the students' parents, indicating that importance was higher than performance in 7 of the foodservice monitoring items. The highest item for both importance and performance was 'food preparation'. There were no differences between the importance and performance of the foodservice monitoring items, regardless of whether or not the students' parents had preliminary education, suggesting that the preliminary education of the students' parents was not effective so far. In conclusion, in order to maximize the effectiveness of students' parent foodservice monitoring programs, it is necessary that students' parents participate voluntarily and perform foodservice monitoring regularly. Also, the preliminary education should be offered prior to performing monitoring, considering the demands and the characteristic of the students' parents.