• Journal of the Korea Society of Computer and Information
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• 제21권3호
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• pp.73-81
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• 2016

With the increasing popularity of social network services (SNSs), there have been many attempts to analyze the users of SNSs. By doing so, the characteristics and preferences of the users can be understood, which can help companies provide personalized information and services that they need or are relevant for them. This study aimed to analyze the usage behavior of Korean Twitter users from various perspectives to deepen the understanding of it. For this research goal, an online survey was conducted for the users of Twitter and the data about their actual usage were collected using the open API of Twitter. Factor analysis of the data revealed five factors that explain about 69.3% of the usage variables. It was also investigated how the factors are related to gender, age, and brand preferences. The results showed that the usage behavior of Twitter is largely affected by age (p<0.001), and also by gender through an interaction effect (p<0.05). Also, the factors showed significant statistical correlations with the brand preferences of the users.

• Journal of the Korean Society for Library and Information Science
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• 제30권4호
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• pp.3-11
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• 1996

• Journal of Korean Society of Occupational and Environmental Hygiene
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• 제31권1호
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• pp.73-82
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• 2021

Objectives: This study aimed to investigate the public cognition and information acquisition route for heavy metals and organic solvents in the general population in order to provide information for the development of public relations materials. Methods: The study was carried out by questionnaire from January to March 2011 by an interview with trained surveyors. There were 700 participants, divided by gender and age. A questionnaire was issued consisting of subjective and objective cognition evaluation items and questions about information acquisition route and preferred information acquisition route for six heavy metals and five organic solvents. Data were expressed as a percentage using the SPSS 23.0 software package. Result: For heavy metals, subjective and objective cognition degrees were higher in the order of lead, mercury, cadmium, and arsenic. They were higher among males than females, and in adults compared to school-age subjects. For organic solvents, both cognition degrees were high in the order of acetone, benzene, and formaldehyde. However, cognition degree by gender and age showed a complex pattern. As a response to information acquisition route, broadcast media had the highest in all ages and genders, followed by word of mouth from neighbors in elementary school children, school education or expert lectures in middle and high school students up to people in their 30s, and print media among those in their 40s to over 60s. There was no difference in the order by gender. As a response to preference for information acquisition route, broadcast media also proved the highest in all ages and genders, followed by school education or professional lectures among those in elementary school and over their 60s, and the internet in other age groups. Females preferred school education or expert lectures and word of mouth from neighbors, while males preferred the internet. In the case of the internet, the ranking was higher for preferred information acquisition route compared with the ranking for information acquisition route. Conclusions: This data on cognition degree, information acquisition route, and preferred information acquisition route according to gender and age can provide basic data for the development of educational and promotional materials for heavy metals and organic solvents exposure management.

• The Journal of the Korea Contents Association
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• 제15권4호
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• pp.246-262
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• 2015

The digital divide has become an important social issue in the two waves of informatization and aging society. This study is to comprehensively examine various theoretical approaches and discussions on the mechanisms of the digital divide and to synthetically understand the features of the digital divide in old age. This study examines 1) four theoretical approaches on the mechanisms of digital divide among people in general, 2) three theoretical perspectives and six specific explanations on the digital divide in old age, and 3) five controversial features and concepts of the digital divide in old age. Consequently, this study suggests the need for a comprehensive approach to the multi-dimensional digital divide in old age and more attention to the digital divide in old age in terms of individual well-being and social inequalities. Further implications and limitations are discussed.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• 제17권8호
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• pp.736-745
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• 2005

This study is undertaken to evaluate the relationship between the indoor $CO_2$ concentration and the local mean air-age in the lecture room with the occupants. We conducted the experiments to examine the indoor $CO_2$ concentration and the local mean air-age with respect to the supply airflow of the ventilation system and the discharge angle and air-flow of the system air conditioner. Through the experiments, we found out that indoor $CO_2$ concentrations calculated by the prediction equation of Seidel are about 350 ppm lower than those measured by the experiments. The indoor $CO_2$ concentration is not related with the air-flow and the discharge angle of the system air-conditioner, but with the ventilation airflow. From the numerical calculation, the indoor $CO_2$ concentration is not related with the ventilation effectiveness, but strongly with the local mean air-age. In case of our model, the indoor $CO_2$ concentration is likely to fall within the acceptable air quality when the local mean air-age is averagely predicted under 400 seconds.

• Journal of Korean society of Dental Hygiene
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• 제24권1호
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• pp.69-77
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• 2024

Objectives: The purpose of this study was to explore the general public's perception and status of oral muscle strength training, to develop age-appropriate educational media and training methods, and to promote the need for oral muscle strength training. Methods: Data were collected from 15 individuals across different age groups (young, middle-aged, and elderly) from December 2022 to February 2023 through focus group interviews, and they were conducted twice for each group in a face-to-face manner. Results: Four key categories were identified: lack of information, effectiveness of training, need for promotion, and factors necessary for implementation. The following themes emerged: lack of information, need for training, age-specific characteristics, need for repetition, age at which training is needed, lack of promotion, need for promotion, number of practitioners, willingness to practice, and appropriate media for training. Conclusions: Awareness of oral muscle strength training was found to be very low, and it is necessary to improve awareness through continuous information and appropriate education on its need among the public. Additionally, quality content or media that can be easily applied for effective training should be developed, and personnel who can perform training efficiently should be trained.

• Asia pacific journal of information systems
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• 제34권1호
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• pp.351-371
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• 2024

This study aims to assess the impact of chatbot usability and demographics on continuous intention to use across different sectors. The research employed Braun's Bot Usability Scale (BUS11) to measure chatbot usability, focusing on accessibility, quality, conversation quality, privacy risk, and response time. A total of 187 participants completed a survey as part of this study. Variance-based SEM was utilized to examine relationships and test hypotheses. This study contributes to the ongoing discourse on chatbot adoption and user behaviour. It enhances the understanding of chatbot usability, highlighting the role of age in continued intention to use chatbots. The findings suggest that different age groups may possess specific preferences and expectations regarding chatbot usability. These differing preferences can influence their intention to continue using this technology. The study reveals that chatbot usability significantly impacts continuous intention to use and that age moderates the relationship between perceived conversation quality, information, privacy, security, and continuous intention to use. Based on the study's results, it is recommended that chatbot designers enhance usability to promote long-term adoption and usage.

• Journal of the Korean Society of Food Culture
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• 제16권4호
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• pp.276-295
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• 2001

In this paper, Korean's dining-out behaviors were compared and investigated according to gender and age. The change and the problem of dietary pattern in Korea were understood and we intend to provide the basic information for guidelines of Korean's dietary habits. The subjects are composed of 46.5% male and 53.5% female. According to age, groups aged $10{\sim}19$ are 26.3%, 20's are 24.6%, 30's are 16.8%, 40's are 18.7%, and 50 and over age group is 13.6%. All of the age groups ate out for celebration of a special day or for social purposes. When dining-out, the most important criteria for selecting a restaurant was the taste of food. All age groups liked Korean-style restaurants the most. All age group eat a house meal at breakfast. At lunch, age groups 40 and below go to a restaurant in school or company and 50 and over age group eats house meal. In general, all age groups ate a house meal at dinner. At breakfast, all the age groups do not eat out. For lunch, they eat out four or five times a week. For dinner, the most of age groups except the 20's eat out two or three times a month and for the 20's age group, two or three times a week. The reason for selecting a Korean-style restaurant is that the food is 'well matched with one's appetite'. According to the above results, the dietary habits of 30 and over age groups are relatively good. On the other hand, in 10's and 20's age groups, they have an irregular meal and the ratio of skipping a meal is high. And they frequently use fast-food restaurants. In the future, the unbalance of nutrition in these age groups is expected. Therefore, the correct nutritional facts should be educated so that these age groups have a healthy dietary habit.

• Journal of Family Resource Management and Policy Review
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• 제14권4호
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• pp.1-20
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• 2010

The purpose of this study is to provide fundamental information of the practice of coming-of-age ceremonies as a family event. In order to achieve the purpose of this study, research questionnaires were developed, and 321 mothers residing in Seoul, South Korea were selected as the research subjects. The study was conducted from April 15th, 2010 to June 25th, 2010. The collected data was analyzed using SPSS17 computer programs. The conclusions are as follows. 1. In the future, coming-of-age ceremonies will be necessary in family event. 2. Education for mothers (specifically for mothers under the age of 30) opposed to coming-of-age ceremonies is necessary. 3. The contents for the education of coming-of-age ceremonies must include ceremony processes, alcohol consumption etiquette, and sex education. 4. Coming-of-age ceremonies, as family events, will be desirable to have on the 19th birthday. 5. Education of coming-of age ceremonies must be done in schools or social educational institutions. The Healthy Family Support Center will especially be able to play a central role. 6. Education of coming-of-age ceremonies is necessary even from the popular media.

• Journal of the Institute of Electronics and Information Engineers
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• 제51권2호
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• pp.69-75
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• 2014

Existing People Counting System using a single overhead mounted camera has limitation in object recognition and counting in various environments. Those limitations are attributable to overlapping, occlusion and external factors, such as over-sized belongings and dramatic light change. Thus, this paper proposes the new concept of People Counting System by Facial Age Group using two depth cameras, at overhead and frontal viewpoints, in order to improve object recognition accuracy and robust people counting to external factors. The proposed system is counting the pedestrians by five process such as overhead image processing, frontal image processing, identical object recognition, facial age group classification and in-coming/out-going counting. The proposed system developed by C++, OpenCV and Kinect SDK, and it target group of 40 people(10 people by each age group) was setup for People Counting and Facial Age Group classification performance evaluation. The experimental results indicated approximately 98% accuracy in People Counting and 74.23% accuracy in the Facial Age Group classification.