• 동서간호학연구지
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• 제20권2호
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• pp.112-120
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• 2014

Purpose: The purpose of this study was to compare the differences in characteristics, lactation problems, knowledge, and adaptation of breastfeeding between users and non-users of a lactation clinic. Methods: The descriptive study design was utilized using self-report questionnaires. 446 breastfeeding mothers participated in this study. Data were collected from lactation clinics, postpartum care centers, mother's culture centers, public health centers, pediatrics and obstetrics & gynaecology outpatient clinics in Seoul, Gyeonggi province, and Chungcheongnam province from August 20 to September 30, 2011. The questionnaires to measure lactation problems, knowledge and adaptation of breastfeeding were used. Data were analyzed using SPSS ver. 18.0 for Windows. Results: There was statistically significant differences in the breast feeding problems(t=5.71, p<.001) and breastfeeding knowledge(t=2.87, p=.004) between users and non-users of a lactation clinic. Conclusion: The results of this study may provide a foundation to develop nursing intervention for mothers in breastfeeding, and an evidence to expand the role of nurses as breastfeeding specialists.

• 한국문헌정보학회지
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• 제41권1호
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• pp.215-230
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• 2007

본 연구는 온라인 데이터베이스 이용자와 비이용자의 선행 정보탐색이 이용자 만족도에 끼치는 영향에 관하여 알아보기 위해 시도되었다. S대학 학생들의 도서관 시스템 이용 행태를 분석해봄으로써, 도서관의 정보서비스 및 시스템 점검과 효율성 측정 그리고 이용자 만족도를 높이기 위해 고려해야 할 사항들을 파악해보는데 목적이 있다. 그 결과 온라인 시스템을 이용하는 이용자가 이용하지 않는 이용자 보다 만족도가 높은 것으로 나타났다. 따라서 이용자들의 요구를 만족시키기 위하여 다양한 정보 접근점을 제공해야 할 것으로 생각된다.

• Journal of Information Technology Applications and Management
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• 제25권2호
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• pp.147-159
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• 2018

The changes of internet environment have made services through web application server (WAS) popular. Accordingly, technical difficulties in identifying users who access databases through WAS were incurred. In order to solve these problems, many companies adopt an agent-based approach for identifying users by installing additional software on WAS. However, this approach must submit to some disadvantages in terms of cost, maintenance, and development process. In this paper, we devise an non-agent based approach for identifying database users in 3-tier environments.

• 보건교육건강증진학회지
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• 제32권5호
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• pp.1-15
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• 2015

Objectives: This study aimed to identify general characteristics of health status and health behavior of adolescents in accordance with their purposes with internet. Methods: Based on Adolescent Health Behavior Online Survey (KYRBS) in 2014, a total of 57,333 adolescents who had used internet were examined in this study. Results: Users for non-academic purposes were associated with male, low grades, low education level of parents, low income level, being apart from parents, being without any consulting partners, being with one parent families, low perceived health status, the experience suicidal ideation and negative health behavior such as alcohol and tobacco. In particular, these trends were appeared strongly by internet users for the purpose of the non-academic purposes. Male among high grades is shown to be mostly Academic internet users and they were more likely to have problems with some health behaviors such as exercise frequency and smoking. Conclusions: Target population should be internet users for only non-academic purposes to prevent internet addiction of adolescents. Internet addiction prevention program should be provided in terms of mental health and problematic behavior. Additionally, health behavior of internet over user for only academic purposes should be concerned.

• International Journal of Contents
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• 제5권3호
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• pp.8-13
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• 2009

The recent Web service field emerges as the fastest growing IT paradigm as a result of the increasing interest in SOA (Services-Oriented Architecture) and the expansion of B2B market. With an increasing number of Web service that provide similar features, it becomes more important to provide the most appropriate service for the user's request. A service user in general requires the quality information of Web service when selecting a service among a number of similar Web services. Yet, finding a service through UDDI (Universal Description, Discovery and Integration) does not consider the non-functional aspects of users because it is only based on the functional aspects. That is, the quality, non-functional aspect will be an important factor for the mutual success of the user and provider. Using 3 factors in the Qos factors of the existing studies: the execution cost, reliability, and the quality level, the QoS of Web service is saved and the factors for the QoS are recorded in order to consider non-functional factors when selecting a Web service in this study. The Quality Broker determines the rank and shows the desired result of the service for users. The Quality Broker suggested in this thesis can be used to select a Web Service that considers the user-oriented and non-functional factors.

• 한국항공운항학회지
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• 제32권2호
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• pp.124-134
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• 2024

This study is based on the Expectation Confirmation Theory (ECT) and categorizes trust types in non-face-to-face boarding services into three dimensions: structural assurance, platform, and service provider. It analyzes the impact of these trust types on users' perceived usefulness, satisfaction, and continuous usage intentions. Using a structural equation model, the study found that the three dimensions of trust positively influence users' satisfaction and perception of usefulness, thereby promoting intentions for continuous use. However, perceived risk weakens the positive relationship between trust and continuous usage intentions. By exploring the moderating role of perceived risk in non-face-to-face boarding services, this study analyzes its impact on user behavior patterns, contributing to the optimization of service design and enhancement of user trust. This study promotes widespread acceptance and continuous use of the service, and is crucial for developing effective non-contact service strategies that meet the needs and expectations of Chinese travelers in the post-pandemic travel environment. The findings provide a new perspective and empirical evidence for understanding user attitudes and behaviors towards non-face-to-face services, holding significant theoretical and practical implications.

• 한국컴퓨터그래픽스학회논문지
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• 제24권3호
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• pp.1-10
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• 2018

본 연구는 비대칭 가상현실 환경에 존재하는 HMD 사용자와 Non-HMD 사용자 모두에게 향상된 현존감을 제공하기 위하여 사용자의 체험 환경에 최적화된 몰입형 상호작용을 제안한다. 제안하는 몰입형 상호작용의 핵심은 HMD 사용자와 Non-HMD 사용자 사이의 비대칭 환경의 차이를 구분하여 사용자에게 최적화된 상호작용을 제시하는 것이다. 그리고 사용자 각각에게 주어지는 비대칭 가상현실 환경에서 향상된 몰입을 제공하여 현존감을 높이기 위하여 HMD 사용자에게는 공간의 몰입을 향상시키는 걷기 상호작용을, Non-HMD 사용자에게는 직접적인 조작을 통해 상황을 전체적으로 이해하고 관리함으로써 몰입을 향상시키는 손 기반 인터페이스를 설계한다. 마지막으로 몰입형 상호작용을 통해 모든 사용자가 향상된 현존감을 제공받으면서 동시에 각각의 체험에 환경에 특화된 경험을 하였음을 설문실험을 통해 검증한다. 이러한 과정들을 통하여 제안한 상호작용이 비대칭 가상현실에서 Non-HMD 사용자도 보조자가 아닌 참가자로써 HMD 사용자와 함께 몰입할 수 있음을 확인한다.

• International journal of advanced smart convergence
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• 제7권1호
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• pp.15-23
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• 2018

Spectrum allocation is a key operation in cognitive radio networks (CRNs), where secondary users (SUs) are usually selfish - to achieve itself utility maximization. In view of this context, much prior lit literature proposed spectrum allocation base on non-cooperative game models. However, the most of them proposed non-cooperative game models based on complete information of CRNs. In practical, primary users (PUs) in a dynamic wireless environment with noise uncertainty, shadowing, and fading is difficult to attain a complete information about them. In this paper, we propose a non-cooperative game joint hidden markov model scheme for spectrum allocation in CRNs. Firstly, we propose a new hidden markov model for SUs to predict the sensing results of competitors. Then, we introduce the proposed hidden markov model into the non-cooperative game. That is, it predicts the sensing results of competitors before the non-cooperative game. The simulation results show that the proposed scheme improves the energy efficiency of networks and utilization of SUs.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제16권4호
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• pp.1351-1372
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• 2022

A self-organizing multiple unmanned aerial vehicles (multi-UAVs) deployment based on virtual forces has a difficulty in ensuring the quality-of-experience (QoE) of users because of the difference between the assumed center for users in a hotspot and an actual center for users in the hotspot. This discrepancy is aggravated in a non-uniform and mobile user distribution. To address this problem, we propose a new density based virtual force (D-VF) multi-UAVs deployment algorithm which employs a mean opinion score (MOS) as a metric of QoE. Because MOS is based on signal-to-noise ratio (SNR), a sum of users' MOS is a good metric not only to secure a wide service area but to enhance the link quality between multi-UAVs and users. The proposed algorithm improves users' QoE by combining virtual forces with a random search force for the exploration of finding multi-UAVs' positions which maximize the sum of users' MOS. In simulation results, the proposed deployment algorithm shows the convergence of the multi-UAVs into the position of maximizing MOS. Therefore, the proposed algorithm outperforms the conventional virtual force-based deployment scheme in terms of QoE for non-uniform user distribution scenarios.

• Nutrition Research and Practice
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• 제7권3호
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• pp.199-206
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• 2013

This study was performed to compare the dietary food and nutrient intakes according to supplement use in pregnant and lactating women in Seoul. The subjects were composed of 201 pregnant and 104 lactating women, and their dietary food intake was assessed using the 24-h recall method. General information on demographic and socioeconomic factors, as well as health-related behaviors, including the use of dietary supplements, were collected. About 88% and 60% of the pregnant and lactating women took dietary supplements, respectively. The proportion of dietary supplements used was higher in pregnant women with a higher level of education. After adjusting for potential confounders, among the pregnant women, supplement users were found to consume 45% more vegetables, and those among the lactating women were found to consume 96% more beans and 58% more vegetables. The intakes of dietary fiber and ${\beta}$-carotene among supplement users were higher than those of non-users, by 23% and 39%, respectively. Among pregnant women, the proportion of women with an intake of vitamin C (from diet alone) below the estimated average requirements (EAR) was lower among supplement users [users (44%) vs. non-users (68%)], and the proportion of lactating women with intakes of iron (from diet alone) below the EAR was lower among supplement users [usesr (17%) vs. non-users (38%)]. These results suggest that among pregnant and lactating women, those who do not use dietary supplements tend to have a lower intake of healthy foods, such as beans and vegetables, as well as a lower intake of dietary fiber and ${\beta}$-carotene, which are abundant in these foods, and non-users are more likely than users to have inadequate intake of micro-nutrient such as vitamin C and iron.