• Physical Therapy Rehabilitation Science
• /
• v.4 no.1
• /
• pp.32-37
• /
• 2015

Objective: This study was conducted to test the effects of mobile texting and gaming on gait with obstructions under different illumination levels. Design: Cross-sectional study. Methods: Twelve healthy adults aged 20 to 36 years (mean 23.5 years) were tested under six different conditions. All participants used touchscreen smartphones. Testing conditions included: 1) Walking with an obstruction under a bright illumination level; 2) walking with an obstruction with a low level of illumination; 3) walking with an obstruction while texting under a bright illumination level; 4) walking with an obstruction while texting with a low level of illumination; 5) walking with an obstruction while gaming under a bright illumination level; and 6) walking with an obstruction while gaming with a low level of illumination. All participants were asked to text the Korean national anthem by their own phone and play Temple Run 2 using an iPhone 5. Gait variances were measured over a distance of 3 m, and the mean value after three trials was used. A gait analyzer was used to measure the data. Results: Compared to normal gait with obstruction, gait speed, step length, stride length, step time, stride time, cadence while texting and gaming showed significant differences (p<0.05). Differences between the illumination levels included gait speed, step length, stride length, and step time (p<0.05) with no significant differences in stride time and cadence. Conclusions: Dual-tasking using a smartphone under low levels of illumination lowers the quality of gait with obstructions.

• Journal of Digital Convergence
• /
• v.12 no.5
• /
• pp.57-68
• /
• 2014

This article analyses frame transition of personal information leakage in Korea from 1984 to 2014. In order to investigate the transition, we have collected newspaper article's titles. This study adopts classification, text network analysis(by co-occurrence symmetric matrix), and clustering techniques as part of social network analysis. Moreover, we apply definition of centrality in network in order to reveal the main frame formed in each of four periods. As a result, accessibility of personal information is extended from public sector to private sector. The boundary of personal information leakage is expanded to overseas. Therefore it is urgent to institutionalize the protection of personal information from a global perspective.

• International Commerce and Information Review
• /
• v.1 no.1
• /
• pp.179-201
• /
• 1999

CALS/EC is about doing business electronically. It is based on the electronic processing and transmission of data, including text, sound and video. It encompasses many diverse activities including electronic trading of goods and services, online delivery of digital content, electronic fund transfers, electronic share trading, electronic bills of lading, commercial auctions, collaborative design and engineering, online sourcing, public procuremet, direct consumer marketing, and after-sales service. It involves both products(e.g. consumer goods, specialised medical equipment) and services(e.g. information services, financial and legal services); traditional activities(e.g. healthcare, education) and new activities (e.g. virtual malls). CALS/EC will be emerging to replace and substitute the role of the conventional market. By changing and eliminating some processes of the transactions, the electronic market and the electronic commerce will redistribute the power and hence the benefits of the market activities. Traditional way of doing business may enter into the new electronic market because the role and function of trust and established reputation will be reinforced in the electronic market. The CALS/EC through the Internet has been in the spotlight in the shopping behavior of the consumers. Accordingly Corporates are trying to adapt themselves to those rapidly changing environments being affected by the Internet. Among others, particularly to be noted is the CALS/EC between corporations and consumers whose potential growth can be considered very substantial. This report, focusing on the introduction of CALS/EC for the logistics of SMEs, will allow us to prepare more efficiently for the coming 21st Century. It is obvious that CALS/EC is fast becoming the useful way of exchanging not only information but products in business between firm-to-firm and firm-to-customer.

• Journal of the Korean Institute of Intelligent Systems
• /
• v.17 no.3
• /
• pp.430-433
• /
• 2007

There have been several researches to manipulate XML Queries efficiently since XML has been accepted in many areas. Among the many of the researches majority of them adopt relational databases as underlying systems because relational model which is used the most widely for managing large data efficiently. In this paper we develop XQuery to SQL Translation Algorithms called XSTAR that can efficiently handle XPath, XQuery FLWORs with nested iteration expressions, element constructors and keywords retrieval on relational database as well as constructing XML fragments from the transformed SQL results. The entire algorithms mentioned in XSTAR have been implemented as the XQuery processor engine in XML management system, XPERT, and we can test and confirm it's prototype from "http ://dblab.kmu.ac.kr/project.jsp".

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2015.10a
• /
• pp.79-82
• /
• 2015

Bag of visual words(BoVW) is one of the image classification and retrieval methods, using feature point that automatical sorting and searching system by image feature vector of data base. The existing method using feature point shall search or classify the image that user unwanted. To solve this weakness, when comprise the words, include not only feature point but color information that express overall mood of image or texture information that express repeated pattern. It makes various searching possible. At the test, you could see the result compared between classified image using the words that have only feature point and another image that added color and texture information. New method leads to accuracy of 80~90%.

• The Transactions of The Korean Institute of Electrical Engineers
• /
• v.65 no.12
• /
• pp.2270-2277
• /
• 2016

In modern society, creation and distribution of multimedia contents is being actively conducted. These multimedia information have come out the enormous amount daily, the amount of data is also large enough it can't be compared with past text information. Since it has been increased for a need of the method to efficiently store multimedia information and to easily search the information, various methods associated therewith have been actively studied. In particular, image search methods for finding what you want from the video database or multiple sequential images, have attracted attention as a new field of image processing. Image retrieval method to be implemented in this paper, utilizes the attribute of corner patches based on the corner points of the object, for providing a new method of efficient and robust image search. After detecting the edge of the object within the image, the straight lines using a Hough transformation is extracted. A corner patches is formed by defining the extracted intersection of the straight line as a corner point. After configuring the feature vectors with patches rearranged, the similarity between images in the database is measured. Finally, for an accurate comparison between the proposed algorithm and existing algorithms, the recall precision rate, which has been widely used in content-based image retrieval was used to measure the performance evaluation. For the image used in the experiment, it was confirmed that the image is detected more accurately in the proposed method than the conventional image retrieval methods.

• Korean Journal of Environment and Ecology
• /
• v.20 no.4
• /
• pp.473-481
• /
• 2006

Readability, an indicator measuring the easiness of reading letters, has been known an important element that determines the communicative effectiveness of the self-guided interpretive signs. However, there are few studies to find out how the readability of the signs influence visitor's attraction and reading behavior of interpretive signs. This study examined the relationship between readability of interpretive signs and attraction, preferences, and intent to recommend reading signs to others. Data were collected from August to November of 2003 at a self-guided trail of Naejangsan National Park, Korea. 350 out of 375 responses from subjects who participated in the questionnaire survey were usable. Results showed that readability of the signs is related with the attraction, preferences, and intention of recommending reading signs to others. The higher the readability of the signs were, the higher the attraction, preferences, and intention of recommending reading signs were. Attraction and preferences were also positively related with intention of recommending reading signs. Preferences better explained intention of recommending reading signs than readability and attraction. These findings suggest that enhancing readability of the signs may lead to higher participation in reading them.

• Journal of the Korea Society of Computer and Information
• /
• v.19 no.2
• /
• pp.173-182
• /
• 2014

In recent years, the efforts for standards of Web contents accessibility and improvements of Web accessibility are expanded in the government, public institutions, university, enterprises. Korean Web Accessibility Guidelines, KWCAG 2.0, by comparison with 1.0, was able to provide more define alternative text in terms of image content, enhance guidance for accessing and use of the keyboard and for a clear distinction of data tables. In this paper, we developed a CMS(Content Management System) for everyone to be able to access to information easily in the mobile/web environments that are changing rapidly. The CMS, which is developed in this paper, is designed and manufactured based on KWCAG, W3C XHTML-1.0-Strict DTD, W3C CSS2 web accessibility and web standards. CMS builder is a WYSIWYG manner making it easy to use and manage, as well as a variety of the web was to operate in a mobile environment.

• Journal of the Ergonomics Society of Korea
• /
• v.28 no.4
• /
• pp.51-59
• /
• 2009

These days mobile phone which were used mainly by grown-up persons are now widely used among children as well due to new social demands. Despite this trend, existing mobile phones are still being designed and produced according to the taste of people in their 20s and 30s, even the elderly, not satisfying physical, emotional and cognitive characteristics raised by children. This study aimed to extract the design factors of mobile phones for children by reflecting functional factors requested by children and parents in QFD's customer demands. First, functional and design factors requested in mobile phones for children were extracted from existing products and documentary records and some functional factors were selected through a process of integration and omission. The survey research was conducted on children and parents, based on the selected functional factors. Based on the survey research, functional factors were analyzed using AHP, and key functional factors considered by children and parents in mobile phones for children were investigated. Finally, in order to reflect the results in QFD, the correlation between functional factors and design factors was constructed as HOQ through experts' evaluation. The results showed that both children and parents recognized the basic functions such as telephoning, text messaging and phone directory as high priority functional factors, even though the relative importance was different between children and parents. Therefore, it is likely to satisfy the desires of both children and parents by designing mobile phones for children in consideration of design factors such as menu depth, button independence and button arrangement. It is expected that this study will promote experiments on design factors and propose basic data for and guidelines to mobile phone design for children.

• Journal of Korean Clinical Nursing Research
• /
• v.19 no.3
• /
• pp.443-454
• /
• 2013

Purpose: The purpose of this study was to evaluate the effects of periodic reminding interventions on medication adherence, self-efficacy, and pain intensity for home-based lung cancer patients. Methods: A quasi-experimental nonequivalent control group, pretest and posttest design was used. The intervention comprised of individual education by tailored image-combined medication instructions, daily reminding text message, and weekly telephone calls for four weeks. The subjects in this study consisted of 62 lung cancer patients (31 in the experimental group, and 31 in the control group). Mann-Whitney U-test was applied to analyze the data. Results: Experimental group who received periodic reminding intervention program better adhered to prescribed medication compared to the control group (z=-6.14, p<.001). Experimental group demonstrated higher level of self-efficacy compared to the control group (z=-6.74, p<.001). Experimental group experienced less intense average pain compared to the control group (z=-6.29, p<.001). Conclusion: The findings suggest that periodic reminding interventions can be applied as an effective nursing intervention to promote medication adherence and self-efficacy to improve and pain management for home-based lung cancer patients.