• Journal of Institute of Control, Robotics and Systems
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• v.21 no.9
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• pp.898-902
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• 2015

Alternative radio-navigation technologies aim at providing continuous navigation solution even if one cannot use GNSS (Global Navigation Satellite System). In shadowing region such as indoor environment, GNSS signal is no longer available and the alternative navigation system should be used together with GNSS to provide seamless positioning. For soldiers in battlefield where GNSS signal is jammed or in street battle, the alternative navigation system should work without positioning infrastructure. Moreover, the radio-navigation system should have scalability as well as high accuracy performance. This paper presents a TWR (Two-Way-Ranging)-based cooperative positioning system (CPS) that does not require location infrastructure. It is assumed that some members of CPS can obtain GNSS-based position and they are called mobile anchors. Other members unable to receive GNSS signal compute their position using TWR measurements with mobile anchors and neighboring members. Error propagation in CPS is analytically studied in this paper. Error budget for TWR measurements is modeled first. Next, location error propagation in CPS is derived in terms of range errors. To represent the location error propagation in the CPS, Location Error Propagation Indicator (LEPI) is proposed in this paper. Simulation results show that location error of tags in CPS is mainly influenced by the number of hops from anchors to the tag to be positioned as well as the network geometry of CPS.

• PNF and Movement
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• v.15 no.2
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• pp.209-216
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• 2017

Purpose: The purpose of this study was to compare the status of the dementia prevention programs, dementia support centers, and elderly welfare centers in major metropolitan cities to acquire data for future program development and dissemination and the specialization of dementia prevention personnel. Methods: Data were gathered through internet surveys and telephone questionnaires from 15 special demented elderly care centers and elderly welfare centers registered in five metropolitan cities from June 27 to Oct 25, 2016. Results: Dementia care programs were available at 15 centers. Seoul City was running the most diverse dementia programs, and all five cities were spending a significant amount of time on the cognitive therapy program within several dementia programs. In addition, many social workers hosted the program and the frequency of social welfare work was three times a week. Conclusion: To increase the dementia prevention policies' efficiency, an understanding of dementia has already been established. Experts who can provide client-centered, problem-solving programs will play the role of physical therapists and occupational therapists. However, more research is needed.

• Human Ecology Research
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• v.52 no.2
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• pp.111-125
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• 2014

The purpose of this study was to examine how an undergraduate family diversity course supported students to enhance undergraduate students' understanding of diversity issues and cultural competence that are necessary to work with diverse families and children as future family science professionals. We collected qualitative research data from 108 students who were enrolled in five sections of an undergraduate-level diversity course, Working with Diverse Families and Children , using nine open-ended questions. In the current study, we specifically focused on four questions in relevant to what undergraduate students learned and what they desired to learn more about diversity issues in families grounded in Hollinger's developmental model of ethical reflection. Using inductive and deductive iterative processes and triangulation, we conducted thematic analysis. Overall, our findings showed that undergraduate students understood the core concepts of diversity and cultural competence. However, they understood these issues at different stages of Hollinger's model of ethical reflection after taking the course. Most undergraduate students accomplished their cognitive and empathetic understanding of diversity and were primarily in Stages 1 and 2. We suggest interactive and reflective teaching strategies that may be effective for undergraduate students to challenge their own biases, practice ethical decision, and prepare for social actions as family science professionals.

• Journal of the Korea Safety Management & Science
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• v.24 no.1
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• pp.61-72
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• 2022

This study aims to propose a conceptual design of information displays for supporting responsive actions under severe accidents in Nuclear Power Plants (NPPs). Severe accidents in NPPs can be defined as accident conditions that are more severe than a design basis accident and involving significant core degradation. Since the Fukushima accident in 2011, the management of severe accidents is increasing important in nuclear industry. Dealing with severe accidents involves several cognitively complex activities, such as situation assessment; accordingly, it is significant to provide human operators with appropriate knowledge support in their cognitive activities. Currently, severe accident management guidelines (SAMG) have been developed for this purpose. However, it is also inevitable to develop information displays for supporting the management of severe accidents, with which human operators can monitor, control, and diagnose the states of NPPs under severe accident situations. It has been reported that Ecological Interface Design (EID) framework can be a viable approach for developing information displays used in complex socio-technical systems such as NPPs. Considering the design principles underlying the EID, we can say that EID-based information displays can be useful for dealing with severe accidents effectively. This study developed a conceptual design of information displays to be used in severe accidents, following the stipulated design process and principles of the EID framework. We particularly attempted to develop a conceptual design to make visible the principle knowledge to be used for coping with dynamically changing situations of NPPs under severe accidents.

• International Journal of Computer Science & Network Security
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• v.22 no.1
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• pp.105-112
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• 2022

The development and spread of IT-technologies has raised interest in teaching programming pupils. The article deals with problems related to programming and ways to overcome them. The importance of programming skills is emphasized, as this process promotes the formation of algorithmic thinking of pupils. The authors determined the level of pupils' interest to programing learning depending on the age. The analysis has showed that the natural interest of younger pupils in programming is decreasing over the years and in the most productive period of its study is minimized. It is revealed that senior school pupils are characterized by low level of interest in the study of programming; lack of motivation; the presence of psychological blocks on their own abilities in the context of programming; law level of computer science understanding. To overcome these problems, we conducted the second stage of the experiment, which was based on a change in the approach to programing learning, which involved pupils of non-specialized classes of senior school (experimental group). During the study of programming, special attention was paid to the motivational and psychological component, as well as the use of game technologies and teamwork of pupils. The results of the pedagogical experiment on studying the effectiveness of teaching programming for pupils of nonspecialized classes are presented. Improvement of the results provided the use of social and cognitive motives; application of verbal and non-verbal, external and internal means; communicative attacks; stimulation and psychological setting; game techniques, independent work and reflection, teamwork. The positive effect of the implemented methods is shown by the results verified by the methods of mathematical statistics in the experimental and control groups of pupils.

• Smart Structures and Systems
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• v.29 no.1
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• pp.251-266
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• 2022

Structural Health Monitoring (SHM) of critical infrastructure comprises a major pillar of maintenance management, shielding public safety and economic sustainability. Although SHM is usually associated with data-driven metrics and thresholds, expert judgement is essential, especially in cases where erroneous predictions can bear casualties or substantial economic loss. Considering that visual inspections are time consuming and potentially subjective, artificial-intelligence tools may be leveraged in order to minimize the inspection effort and provide objective outcomes. In this context, timely detection of sensor malfunctioning is crucial in preventing inaccurate assessment and false alarms. The present work introduces a sensor-fault detection and interpretation framework, based on the well-established support-vector machine scheme for anomaly detection, combined with a coalitional game-theory approach. The proposed framework is implemented in two datasets, provided along the 1st International Project Competition for Structural Health Monitoring (IPC-SHM 2020), comprising acceleration and cable-load measurements from two real cable-stayed bridges. The results demonstrate good predictive performance and highlight the potential for seamless adaption of the algorithm to intrinsically different data domains. For the first time, the term "decision trajectories", originating from the field of cognitive sciences, is introduced and applied in the context of SHM. This provides an intuitive and comprehensive illustration of the impact of individual features, along with an elaboration on feature dependencies that drive individual model predictions. Overall, the proposed framework provides an easy-to-train, application-agnostic and interpretable anomaly detector, which can be integrated into the preprocessing part of various SHM and condition-monitoring applications, offering a first screening of the sensor health prior to further analysis.

• 한국노년학
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• v.40 no.2
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• pp.311-323
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• 2020

Older adults are at a high risk of falling, causing severe injuries and increased hospital stays and treatment costs. This can be a burden not only on the family but also on the national economy. Thus, fall prevention is very important in nurses' and nursing assistants' work. This study intended to grasp the real situation faced by nurses and nursing-assistants working at geriatric hospitals in J province, Korea. The researcher interviewed thirty-six nurses and nursing-assistants in four geriatric hospitals and performed four focus group interviews. Data were analyzed through an inductive content analysis based on Elo & Kyngäs's approach. Three categories and five subcategories were identified. Categories were patients, environmental, and personal factors. Patient factors included patients' impaired cognitive function. Environmental factors included lack of personnel support and assignment of inpatients without regard to fall risk. Personal factors included hopelessness regarding improvement and fear of being blamed. Promotion of fall prevention practice needs a gradual increase in nursing staff at geriatric hospitals, a system for assigning hospital room according to fall risk, and education and support system to reduce nursing burden.

• Journal of Oriental Neuropsychiatry
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• v.35 no.1
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• pp.101-113
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• 2024

Objectives: The purpose of this scoping review is to suggest future treatment and research directions for adult ADHD by examining domestic trends in Korean research on adults with ADHD tendencies. Methods: The present review used Arksey and O'Malley's scoping review methodology. Eight domestic databases were used, and a search was conducted in July 2023 while targeting domestic papers that had been published within the last 20 years. Subject keywords included 'College student', 'Soldier', and 'Adult', and the subject-related terms that were searched for included 'ADHD'. Results: From 502 initially collected articles, 78 were ultimately selected for analysis in this work. Domestic research related to adult ADHD has been steadily conducted since 2000, and most such research has been done in psychology. Regarding the research participants, those in their 20s were the most common age group, and college students accounted for more than half of participants. In terms of study design, survey studies were the most common, while there was a lack of studies on intervention. The subject most closely dealt with in ADHD studies was interpersonal relationships, followed by depression and addiction. The main intervention used in this study was cognitive behavioral therapy, however it was limited in number. Conclusions: More multifaceted studies on adult ADHD need to be conducted using various research methodologies, and there is also a need for more studies using interventions. It is also important for such research to be expanded to broader geographic areas, ages, and occupations.

• Culinary science and hospitality research
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• v.22 no.4
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• pp.240-253
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• 2016

This study was undertaken to better understand the professional recognition of the food service industry of college students in food service realted majors based on characteristics of the respondents In order to achieve the purpose of the study, 211 questionnaire surveys were colelcted in the period from May 19 to May 30, 2014. The study conducted regression analysis by using SPSS Win18.0 package, for frequency analysis, exploratory factor analysis, analysis of reliability, correlation analysis tests, t-test, andone way ANOVA. Measure of occupation self-esteem, positive values, social reputation, negatively handled, relatively effectively configuration, each construct was to ensure reliable and statistically significant relevance. The results were analyzed by the difference factor of occupation self-esteem according to demographic characteristics, depending on gender, has confirmed that the perceived social reputation in a different way, depending on the differences in grade, to verify that you are aware of the positive values in a different way. Also Department has been analyzed with the degree of cognitive differ for positive values and negative treatment in accordance with, understand that it perceives the relative effects and negative treatment in accordance with the future desired profession in a different way. This suggests that there is a need to find ways to satisfaction and career decision level of major occupational self-esteem is high is to raise the occupational self-esteem major of food service industry college students based on the results of previous research get higher. In particular, I would like to emphasize that there is a need provide a substantial improvement on the negative treatment and the most negative recognize and social reputation is for the work of the food service industry.

• Journal of Venture Innovation
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• v.6 no.3
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• pp.149-164
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• 2023

Today, when innovation and creativity become increasingly important, management of human resources is a key factor for corporate performance and competitive advantage. Corporate are implementing and introducing various types of support methods for members to achieve goals and improve organizational performance. Organizational culture and organizational trust affect the cognitive and emotional state of members. Furthermore, it can bring about changes in organizational performance such as job stress and job satisfaction. From an institutional point of view, work-life balance is also a major factor affecting organizational performance. The imbalance between work and life leads to a decline in organizational performance, such as decreased morale and dissatisfaction with work. In relation to work-life balance, the low birth rate problem intensified and the importance began to emerge. Therefore, the government has implemented various policy support for workers' work-life balance, and the "52-hour workweek" is a representative example. This study analyzed the effect of organizational culture applying the competitive value model on workers' job stress. In addition, the mediating effects of overtime work per week and organizational trust were analyzed. Job stress corresponds to a prerequisite stage that affects job commitment, job satisfaction, and turnover intention. However, research measuring job stress by organizational performance is insufficient. In addition, there are few studies analyzing the relationship between overtime and organizational performance. Considering this, it is necessary to understand the influence relationship. The results of the study are as follows. First, a hierarchical culture increases the job stress of workers. On the other hand, innovation-oriented, relationship-oriented, and competition-oriented corporate culture reduce job stress. Second, a hierarchical culture has reduced trust in the organization, and other organizational cultures have increased trust in the organization. Third, relationship-oriented and competition-oriented organizational culture reduced overtime. Innovation-oriented, hierarchical-oriented culture increased overtime Fourth, organizational trust and overtime have the effect of mediating organizational culture and job stress. Based on these analysis results, this study presented academic and political implications.