• Journal of Korean Society of Transportation
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• v.25 no.3
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• pp.111-121
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• 2007

A transit assignment model can forecast the behaviors of transit users. thereby playing an important role In the evaluation of transit policies. Most existing transit assignment models are based on the models for passenger cars; therefore they cannot reflect the specific characteristics of transit modes. In addition most of the existing models are based on a single transit mode (bus or rail), and they cannot forecast the behaviors of transit users in a changing mass transportation system. The goal of this study is to overcome these problems with the exiting models and to develop a more realistic model. The newly developed model is based on mixed transit modes and is a stochastic model that can reflect the different preferences of each transit user for travel time and transfering. Data gathered from the Seoul metropolitan area's smart card are used to calibrate this model. This study is expected to be used for the evaluation of transportation policies and to attribute the development of transit revitalization strategies.

• Journal of Internet Computing and Services
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• v.16 no.1
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• pp.9-20
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• 2015

Nowadays, Smart Wallet technology trend that is able to save users' consuming costs and also retain users' redundant behaviors such as Single-tapping, One-way communication, Integrated ID, has been issued in recent Mobile Industrial Fields. As one of Smart Wallet functions, Integrated ID is proposed for users' convenience, handiness, and immediate responses. It is designed for the effective management of users' IDs which are easy to be forgot because of its unusual structures. To be detail, instead of user, Integrated ID system can certificate users identification from various online sites (where user resisted) authorization requests via one-clicking, not putting identification data in each sites. So, this technology would be helpful much to a certain user who has lots ID and its Password in multiple Online shopping companies by establishing integrated ID. However, although Integrated ID has lots advantages to be used, most Mobile Service Companies has hesitated to apply Integrated ID service in their shopping systems because this technology requires them sharing their users' data. They have worried that this service would be not helpful to gain their profits. Furthermore, Users who join in multiple shopping companies and use Integrated ID services also are difficult to decide which company they have to save their points in before payment because this system could not show any financial benefit analysis data to their users. As following facts, via this paper majorly we propose the advanced Integrated ID system which concern shopping point management. Basically, this system has a strong security payment service and secure network services like other mobile Shopping systems. Additionally, this system is able to service (or to support) shopping -point -saving guide for customers' financial benefits and conveniences.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.8 no.3
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• pp.21-32
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• 2005

In Incheon metropolitan city, the urban open space areas are deficient and it is nearly impossible to obtain newly the land for parks by reason of the risk of the land value, the budgetary deficit and so forth. Therefore, it seems to be urgent to consider how to manage the established urban natural park efficiently to enhance the quality of recreational experiences of the public. The organization for the urban natural parks management is to be completely put in good order, for the objects to manage is changeable as well as diverse and what users need should be full satisfied. The purpose of this study is to investigate the differences of urban natural park's management suggest the improvement and development directions in urban natural park by group(professionals and Users). To do this, data were collected in the typical regions by urban natural park for this study, using the questionnaires. In these urban natural park, the on-site survey was carried out the users of these urban natural park during October in 2004. Also The analysis was done with the valid questionnaires of user's 644 and professional's 146. The questionnaires contained three of categories : openspace types' satisfaction and urban natural park's satisfaction, and management, and park user's socioeconomic characteristics and behaviors. Data collected from respondents were analysized by descriptive statistics, T-test, factor analysis and regression analysis. The results of this study can be summarized as follows; The evaluation of urban natural park management is predicted the operation management. So, one can draw a conclusion that user's needs is likely to be increased correspondingly as urban natural park planning and design, management which meets the overall satisfaction. Using the results of this study, we can make a guideline for a park management program, market positioning, standards and provisions of urban natural park by group.

• Journal of the Korean Society of Food Culture
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• v.18 no.3
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• pp.235-243
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• 2003

This study was to investigate the consumer recognition of commercial Sunsik & Saengsik. The data was collected from the 395 married women residing in Seoul and Kyungki area by the self-administered questionnaire. A related purpose was to analyze the nutrient composition and the hygienic safety of commercial Sunsik and Saengsik. The results from this study were as follows. The purchasing and using behaviors were significantly different between two user groups. Sunsik users have generally purchased the products at a discount store(41.0%) as a between-meal snack(36.4%). The products were usually the ones made on the spot(55.0%). However, Saengsik users have purchased the manufactured products-serving size package-(84.0%) at a health foods store(50.7%) as a health food(38.7%). Many of Sunsik users have had Sunsik in water or milk with sugar(40.7%) and 1-2 times a week(40.0%). But Saengsik users have usually had Saengsik in water or milk with honey(38.6%) and everyday(34.7%). According to the analysis on nutrition composition, crude proteins were significantly more rich in Sunsik samples, and crude ashes were more rich in Saengsik samples(p<0.01). Sunsik E and all the Saengsik samples showed the high total viable plate counts of $4.8{\sim}7.0$ log cfu/g. Coliform groups were detected in all the Saengsik and two Sunsik(A, E) samples.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• v.16 no.2
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• pp.104-115
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• 2013

Purpose: To estimate the prevalence of dietary supplement (DS) use, investigate the related factors associated with DS use among preschoolers and support the adequate nutrition. Methods: We conducted a questionnaire survey of mothers of children aged between 1 and 6 years who visited pediatric clinics in 3 Korean cities (Jeonju, Suncheon, Jeongeup) between October and November 2012 at Presbyterian Medical Center. The responses from 929 questionnaires were analyzed. Results: Approximately 45.1% of the preschoolers used DS in the past month. The following factors were associated with greater use of DS: older age (p<0.001), whether or not the preschoolers attended kindergarten (p<0.001), higher mother's concern about the nutritional facts (p<0.001), whether or not the mother use DS (p<0.001), whether or not the mother counsel with a doctor or pharmacist about DS use (p<0.001). Vitamin mineral supplements (77.5%) were the most commonly used DS among the preschoolers, followed by ginseng (49.3%) and probiotics (25.6%). Additionally, of the DS users, 95.9% gave DS to their healthy children. Of the users and non-users, 97.6% and 62.2%, respectively, indicated that they would like to have their children take DS. The information on DS was obtained from family or friends in 48.2% of the DS users and from doctors in only 6.1%. Conclusion: Approximately half of the preschoolers in our study used DS, which might not have been medically indicated for most of them. Therefore, the role of professionals in counseling on desirable diet behaviors and DS use for preschoolers is warranted.

• The Journal of Korean Association of Computer Education
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• v.7 no.3
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• pp.79-89
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• 2004

Social problems are coming to light due to the dysfunction which is caused by the improvement of ICT and the increasing information with computers and one of these problems is teenagers' computer toxicosis. In order to measure such an toxicosis, test paper that is developed by Kimberly S. Young is typically used. In this study, along with the test paper, localized Korean Internet addiction test (K-index) was used and the study was also made on the basis of such result. With results of sorting the data on the basis of K-index diagnosis criteria, it showed general users were 534 (64.8%), with potential risk users were 229 (27.8%) and high risk users were 61 (7.4%). This study was for the purpose of finding out sufficient and essential conditions ( outer behaviors ) of computer toxicosis for high risk users and searching for preventive measures for them.

• The Journal of Information Systems
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• v.26 no.3
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• pp.313-337
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• 2017

Purpose Financial technology, also known as FinTech, is conceptually defined as a new type of financial service which is combined with information technology and other traditional financial services like payments, investments, financing, insurance, asset management and so on. Most of the studies on FinTech services have been conducted from the viewpoint of technical issues or legal and institutional studies, and few studies are conducted from the health belief perspectives and security behavior approaches. In this regard, this study suggest an extended information protection behavior model. Design/Methodology/Approach The Health Belief Model (HBM), the Protection Motivation Theory (PMT), and the Technology Threat Avoidance Theory (TTAT) were employed to identify constructs relevant to information protection behavior of FinTech services. A new extended information protection behavior model in which the influence factors of information protection behavior (i.e., perceived susceptibility, perceived severity, perceived benefits, perceived barriers, perceived self-efficacy, subjective norms) affect perceived threats and perceived responsiveness positively, leading to information protection behavior of FinTech users eventually. This study developed an extended information protection behavior model to explain the protection behavior intention in FinTech users and collected 272 survey responses from the mobile users who had experiences with such mobile payments and FinTech services. Findings The finding of this study suggests that the influence factors of information protection behavior affect perceived threats and perceived responsiveness positively, and information protection behavior of FinTech users as well.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.37C no.11
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• pp.1112-1128
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• 2012

In cognitive radio networks, secondary users are allowed to utilize the channels currently not occupied by primary users opportunistically. Secondary users can communicate with each other using the commonly available channels (common channels) which may change dynamically based on the activity of the primary users. Even though many studies have dealt with cognitive radio behaviors, the detailed procedures for common channel configuration have not been paid much attention. In this paper, the fast and reliable dynamic common channel setup and reconstruction method for the point-to-point communications in military cognitive radio networks is proposed. The detailed time parameters are considered for common channel setup and reconstruction, such as the packet exchange time, channel request waiting time, and rendezvous time. Through numerical analyses, the delay and throughput performance of the proposed method is derived and evaluated.

• Journal of the Korea Society of Computer and Information
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• v.15 no.12
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• pp.237-245
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• 2010

Korea Communications Commission (KCC) has been providing the pilot service of URC(Ubiquitous Robot Companion), which is a network-based personal robot, to 1000 Korean households since 2006 to define potential users' needs and adoption behaviors. Personal innovativeness might play a critical role in adoption of URC services by users because much sophisticated and convergence technologies are incorporated into URC services. Also, defining not only perceived beliefs about URC services but also expected beliefs about them are very crucial to reduce disconfirmation between users' perception and expectation of URC services. From this point of view, this paper aimed to examine robot users' adoption behavior by considering constructs such as personal innovativeness, usefulness (perceived usefulness - expected usefulness, P-E), user attitude, and intention to use. The findings reveal that personal innovativeness is negatively related to usefulness (P-E) whereas usefulness (P-E) influences significantly and positively on user attitude. It is also shown that usefulness (P-E) and user attitude have strong positive effects on intention to use.

• Journal of the Korean Institute of Intelligent Systems
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• v.21 no.6
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• pp.712-717
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• 2011

Recently, diverse schedule management agents are being researched for the efficient schedule management of smart devices users, but they remain at a confirmatory level. In order to efficiently manage user's schedules, execution of planned schedules should be monitored to help users properly execute their schedules, or feedback must be given so that when setting up new schedules, users can plan their schedule according to their schedule establishment patterns. This research proposes a schedule management agent that infers the user's behaviors by using acquired user context, and provides schedule related feedback depending on the user's behavior patterns, when users are executing their schedules or planning new schedules. For this, collected user context information is preprocessed and user's behavior is inferred by Bayesian network. Also, in order to provide feedbacks necessary for confirming the user's schedule execution and new schedule establishment, a context tree pattern matching method for the user's schedule, location and time contexts was applied, then verified with 6 weeks of user simulation in a mobile environment.