• Journal of the Korea Convergence Society
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• v.8 no.5
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• pp.45-52
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• 2017

In this paper, we investigated the following items for the development of gas safety work mobile app. In this study, which is a follow-up study after the completion of the scenario design and the first, second image extraction of the mobile app based on the initial research that has been studied, 1) Suggested classification of gas works by type classification and risk classification 2) The research and proposal of interaction method for effective interworking of mobile app and worker in many industrial fields of two-hand work have been made. In particular, the development of a mobile app that interacts with the main system that manages not only the gas work but also the field of each industrial field is the first attempt in Korea and has helped the worker to work freely and safely through various interaction methods.

• Journal of the Korea Convergence Society
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• v.11 no.1
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• pp.97-108
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• 2020

Nowadays, '1+N' is the operation model of compound bookstores. This study firstly investigated the general information and needs of customers and analyzed 4 basic behaviors of customers in 10 functional space of bookstore. Secondly, a preliminary analysis framework of interior design of compound bookstore was established, by applying 3 research tools of service design to 3 design elements of interior design. Thirdly, the case was analyzed in the preliminary analysis framework to find out the detailed process of the interaction between the customer and the bookstore, the touchpoint and the interior design project, to find out the blind spots in design, and put forward the solutions. Finally, after being refined, a compound bookstore interior design model based on the concept of service design was established. This model can be used to test the design content and service quality of the interior functional area of the compound bookstore, and to find out the design blank points.

• Journal of The Korean Association For Science Education
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• v.19 no.2
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• pp.204-216
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• 1999

A value can be placed on the integrated science curriculum in terms of producing an insight into solving the routine problem. From such a point of view, the comprehensive concepts which explain the extensive natural phenomena were defined as the integrated themes in this study, and the contents of the integrated science curriculum were developed, as the understanding of the contents focused on the integrated theme enables us to be productive and have an insight. Through analyzing teaching materials, programs and curriculums in relation to the integrated science, five concepts of system, interaction, harmony and balance, structure and function, and circulation were established as the integrated themes, and the nature of each integrated theme was examined. Next, in accordance with the integrated theme, the content of the integrated science curriculum,which are deeper in aspect of the integration level than that of the current science of middle school, were developed. The content of the integrated science curriculum which was proposed in this study is of great significance. in that they provide new perspectives related to our current science curriculum.

• The Journal of the Korea institute of electronic communication sciences
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• v.11 no.2
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• pp.229-236
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• 2016

The objectives of this study are to suggest useful directions for promotion of SNS tourism information service to the service providers through investigating the effect relationship between SNS tourism information service quality and the information sharing intention. To achieve the objectives, as a conceptual framework of the study, the literature on SNS tourism information service quality and information sharing intention were reviewed, and the empirical studies on the perception of the service users about the services was conducted. The findings showed that the 'easy acquisition' and 'interactivity' factors of SNS tourism information service quality have an effect on the information sharing intention. Accordingly, the service providers are required to enhance the service quality related to the information acquisition and interaction between users.

• The Mathematical Education
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• v.59 no.3
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• pp.271-294
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• 2020

The purpose of this study was to explore the possibility of digital simulation by which pre-service teachers (PSTs) can approximate the core teaching practice of eliciting student thinking. This study examined PSTs' questions to elicit student thinking, their use of "pause" session and peer feedback, and their reflections on doing a digital simulation. We analyzed a two-hour digital simulation session with 13 PSTs who enrolled in the elementary mathematics methods course. The results showed that PSTs shifted their general questions to more content-specific questions throughout the simulation and made a quick transition to comparing students' strategies. The number of lead PST-initiated "pause" ranged one to four times for various reasons. Their peer-coaches did not voluntarily "pause" the simulation session but actively shared what they noticed from the student work samples and suggested the next teaching moves. Without utilizing the pause session, the dramatic improvement of questioning was not observed. Even though the PSTs felt overwhelmed with interacting with the student-avatars in real-time, they highlighted the benefits of simulations, appreciated the opportunity to learn the core teaching practice, and viewed this digital simulation as "real" and "authentic" experience. The findings of this study provide implications for re-designing a practice-based teacher education program.

• Applied Chemistry for Engineering
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• v.29 no.5
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• pp.519-523
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• 2018

Cyclodextrins are a class of oligosaccharides having an extremely low toxicity, so that they have been used for the formation of host-guest complexes and removal of toxic gases or molecules. In this study, the subtle phenomenon associated with the formation of host-guest complexes between cyclodextrin and toxic molecules (methyl paraben) was experimentally investigated. First, the formation of cyclodextrin-methyl paraben complexes was monitored by UV/Vis spectroscopy as a function of the cyclodextrin concentration. Secondly, the electrochemical measurement was performed with the surface engineered Au electrode having cyclodextrin molecules on the Au substrate. The sensing signal derived from the addition of methyl paraben solution into the Au surface was measured delicately. This study can be informative for future applications such as sensors.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.16 no.5
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• pp.21-26
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• 2016

With the increased desire of TV consumers for interactivity and personalization, IPTV has been rapidly spread in recent years. IPTV can provide a variety of services through hundreds of channels, but the explosion of TV channels makes users even more difficult to find their desired contents. In addition, the channel zapping delay of IPTV is serious due to the limited network bandwidth. To resolve these problems, this paper distinguishes hot and cold channels by exploiting the real-time viewing rate as well as each user's viewing history, and then, maintains hot channels in the hot list, which is searched first during channel navigation and also prefetched to support the preview of channels. Experimental results show that the proposed scheme improves the IPTV channel seek time significantly compared to existing channel seeking interfaces.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.41 no.6 s.324
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• pp.33-39
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• 2004

Design of efficient Medium Access Control (MAC) protocols with both high throughput performances is a major focus in distributed contention based MAC protocol research. In this paper, we propose an efficient contention based MAC protocol for wireless Local Area Networks, namely, the Developed Collision Resolution (DCR) algorithm. This algorithm is developed based on the following innovative ideas: to speed up the collision resolution, we actively redistribute the backoff timers for all active nodes; to reduce the average number of idle slots, we use smaller contention window sizes for nodes with successful packet transmissions and reduce the backoff timers exponentially fast when a fixed number of consecutive idle slots are detected. We show that the proposed DCR algorithm provides high throughput performance and low latency in wireless LANs.

• Journal of Digital Contents Society
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• v.19 no.9
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• pp.1795-1801
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• 2018

Genome-Wide Association Study (GWAS) have been used to identify susceptibility genes for complex human diseases and many recent studies succeed to report common genetic factors for various diseases. Unfortunately, it is hard to understand all biological functions and mechanisms around the complex disease with GWAS only although the number of known associated genes with diseases is increased drastically because GWAS is a single locus based approach while not a gene but numerous factors may affect a disease associated pathways. PRaDA generates a combined report with genes, pathways and Gene Ontology (GO) using single nucleotide polymorphism (SNP) analysis output. The PRaDA reports not only directly associated pathways but also functionally related ones for identifying accumulated effects of low p-value SNPs. Through integrated information including indirect functional effects, user could have insights of overall disease mechanisms and markers.

• Science of Emotion and Sensibility
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• v.10 no.1
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• pp.55-68
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• 2007

This paper describes a Voice User Interface(VUI) method and a design guideline tool which supports the studies for domestic appliance. This issue covers specification of user requirement and selection of appropriate VUI to represent speech generation. The criteria for paper is interaction design to enhance user engagement. The studies were carried out to measure prototype of domestic appliance such as a refrigerator, a washing machine, a Gimchi refrigerator, an oven range, a dishwasher and an air conditioner. This paper is presented a study of user preferences and suitability. The results of these findings to voice interface design are discussed and it is suggested that VUI guideline and optimal prototyping can provide a useful application tools in the design process.