• Korean Journal of Remote Sensing
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• 제23권2호
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• pp.71-87
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• 2007

In this study, 14 heavy snow events in Yeongdong area which are local phenomena are analyzed using MODIS cloud products provided from NASA/GSFC. The clouds of Yeongdong area at observed at specific time by MODIS are classified into A, B, C Types, based on the characteristic of cloud properties: cloud top temperature, cloud optical thickness, Effective Particle Radius, and Cloud Particle Phase. The analysis of relations between cloud properties and precipitation amount for each cloud type show that there are statistically significant correlations between Cloud Optical Thickness and precipitation amount for both A and B type and also significant correlation is found between Cloud Top Temperature and precipitation amount for A type. However, for C type there is not any significant correlations between cloud properties and precipitation amount. A-type clouds are mainly lower stratus clouds with small-size droplet, which may be formed under the low level cold advection derived synoptically in the East sea. B-type clouds are developed cumuliform clouds, which are closely related to the low pressure center developing over the East sea. On the other hand, C-type clouds are likely multi-layer clouds, which make satellite observation difficult due to covering of high clouds over low level clouds directly related with Yeongdong heavy snow. It is, therefore, concluded that MODIS cloud products may be useful except the multi-layer clouds for understanding the mechanism of heavy snow and estimating the precipitation amount from satellite data in the case of Yeongdong heavy snow.

• The Journal of the Convergence on Culture Technology
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• 제5권2호
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• pp.163-175
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• 2019

The purpose of this study is to examine the effects of integrated art therapy on the self-esteem of children who experienced domestic violence. In order to find out whether there is an effect, we used the nonparametric statistic as a quantitative study to verify the difference of self-esteem. In qualitative research, I used the dynamic familyization, sentence completion test, program report, feedback journal, and observation log from researcher and assistant therapist so as to get the deep understanding of their inner world. This study conducted a trauma test for 49 children in grades 4-6 from one elementary school in a city of Jeollabukdo Province. As a result, there was a significant increase in total self-esteem including their social life. family life, and school life after the program was implemented. Also, integrated art therapy promoted general perception and specific perception of self, which affected total self - esteem, social self - esteem, family self - esteem, and school self-esteem. So, it improves the self-esteem of children who have experienced domestic violence, In order to improve peer relations and interpersonal relations, if integrated art therapy is carried out in schools or institutions in the future, it will be possible to reduce social cost and distance.

• Journal of Hospice and Palliative Care
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• 제19권1호
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• pp.45-60
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• 2016

Purpose: This study is aimed at understanding the volunteers' experiences and interactions with their corresponding teams during their participation in hospice care. More specifically, the study is to contribute policy-wise to development of hospice care in Korea by helping policy-makers and organizers and managers of hospice care provides better understand the importance of the meaning and roles of volunteers in hospice care. Methods: In-depth interviews and participant observation were performed with study participants who were selected from four different types of hospice agencies. Study analysis was conducted using "case study" as one of the rigorous qualitative research methods to develop "inter-" and "intra-" comparisons among the study participants. Results: Volunteers in hospice care were initially motivated by religion and faith, and the motivation grew stronger through the volunteer experiences. They emphasized that the essence of the hospice volunteering was motivation from religion and faith and something they do for themselves. They characterized their experience as a true service that is offered for free and a job that requires expertise. In addition, they achieved personal (internal) growth by reflecting on the meaning of "good death" and better understood the importance of respecting spiritual diversity. Conclusions: This study could help hospice officials offers better understand hospice volunteers' role and their importance. The study also provide practical implications and policy suggestions.

• Journal of Hospice and Palliative Care
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• 제16권2호
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• pp.65-73
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• 2013

The objective of this paper is to suggest future goals and strategies for social work in hospice and palliative care in Korea by understanding its historical background. Both literature review and participant observation were performed to examine historical data relating to social work in hospice and palliative care in Korea. Also reviewed were the current trends with a focus on the roles of social workers in the said arena, qualifications, education, research and medical insurance policy. First of all, the roles of social workers do not appear to be clearly defined in the field of hospice and palliative care, which seems to lead to the lack of recognition as professional workers. The qualification standard for social workers in hospice and palliative care remains inadequate. Second, there seems to be insufficient professional social worker training resources, in terms of both the number of educators and training programs. Third, social workers in Korea produce significantly less publications than those in other professions. There is also a dearth of qualified evidence-based research that is needed to prove benefits of intervention and ultimately for policy implications. Last, the current medical insurance policy needs to be revised to secure fees for social work services and dedicated full-time social workers in hospice and palliative care. Korea needs to approach social work in hospice and palliative care with specific goals to develop future strategies. Related infrastructure and an executive structure should be established via networking and partnership with academic societies, associations and schools.

• Journal of the Korean Society of Marine Environment & Safety
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• 제27권2호
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• pp.324-339
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• 2021

In this study, we determined the correlation between the wave characteristics and the change in the area of Haeundae Beach, conducted regression analysis between the wave characteristics and the change in beach area, and derived a formula for calculating the change in beach area. The change in beach area was calculated by applying the derived formula to wave observation data corresponding to a period of approximately 10 months, and the formula was subsequently validated by comparing the obtained results with the observed area. It is found that the error associated with the formula for calculating the change in beach area ranges from 1.5 m to 2.7 m based on the average beach width, and the correlation coefficient corresponding to the observed area ranges from 0.91 to 0.94. Furthermore, it is observed that the change in beach area is af ected by the wave direction in the western zone, wave height in the central zone, and wave height and wave period in the eastern zone. These results can contribute to understanding the impact of a coastal improvement project on the beach area fluctuation characteristics of Haeundae Beach and the ef ectiveness of such a coastal improvement project. By applying the aforementioned derived formula to highly accurate wave prediction data, the change in beach area can be calculated and incorporated for predicting significant long-term changes in beach areas. Furthermore, such a prediction can be considered as the basis for making decisions while establishing preemptive countermeasure policies to prevent coastal erosion.

• Journal of Science Education
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• 제47권1호
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• pp.88-106
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• 2023

This study aims to investigate the disparity between the teacher's perception of student-centered inquiry classes and the actual implementation of such practices. Specifically, we compared an elementary science teacher's self-perception of her science lessons with the observers' evaluation using the Reformed Teaching Observation Protocol (RTOP) of the "Temperature and Heat" unit. Research data were collected through classroom teaching survey, interview, and science lessons video which were analyzed using the RTOP. As a result of the study, the teacher recognized that she was practicing inquiry-oriented/student-centered classes, but the results judged by the RTOP score were found to be transitional/student-affected classes by a slight difference. Teacher H planned and practiced classes based on a high understanding and content knowledge of the curriculum and created a science classroom culture that promotes active interaction among students as well as students and teachers. However, teacher-led aspects were still emphasized in teaching design and implementation, and the project theme and content were inappropriate to improve the quality of students' science inquiry experience. In the end, the slight difference between teacher's perception of inquiry-oriented/student-centered classes and actual implementation is related to how student-centered "lesson design" is and how to plan and implement classes supported by "procedural knowledge" for students' experience in the science inquiry process. These results indicate that the teacher's self-evaluation alone is not enough to determine whether the teacher's intentions and efforts are actually being implemented, and that it is necessary to conduct objective analysis, evaluation, and discuss the results of science classes by the external observers.

• The Journal of the Korea institute of electronic communication sciences
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• 제18권5호
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• pp.953-964
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• 2023

Climate change is undeniably the most urgent challenge that humanity faces today. Despite this, the level of public awareness and understanding of climate change remains insufficient, indicating a need for more proactive education and the development of supportive content. In particular, it is crucial to intensify climate change education during elementary and secondary schooling when values and ethical consciousness begin to form. However, there is a significant lack of age-appropriate, experiential educational content. To address this, our study has developed an innovative 3D simulator, enabling learners to indirectly experience the effects of climate change, specifically sea-level rise. This simulator considers not only sea-level rise caused by climate change but also storm surges, which is a design based on the analysis of long-term wave observation big data. To make the simulator accessible and engaging for students, we utilized the 'Unity' game engine. We further propose using this simulator as a part of a comprehensive educational program on climate change.

• Korean Journal of Cognitive Science
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• 제24권3호
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• pp.237-270
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• 2013

Determinism and compatibilism have thought that libertarianism contradicts the scientific view. This paper demonstrates that the hypothesis that free will exists does not cause any problems and contradictions, while maintaining pro-scientific view. Rather, determinism lacks scientific and demonstrative bases. At first, I reject dualistic self by assuming identity theory of the self and physical body & brain. Free will is a functional concept or property that can have multiple realization. Therefore we can recognize whether aliens or robots have free will through observation on their acts. 'Free will' is a functional kinds term like 'digestion'. As we know we have digestive function, we can know that we have free will even before knowing the necessity of its existence by understanding micro structure of human free will. The judgement that an individual has free will function depends on whether it has particular actions. Those actions are controlling and restraining actions in context, predicting future, making elaborate conditional sentences, etc. Real being of free will is the physical occupant of the function that makes those actions. Determinism is based on various kinds of misconceptions and misunderstandings. Determinists often confuse necessity of physical law and determinism. Another decisive misunderstanding is that free will postulates same conditions and different results from the same point of time. However, free will postulates that the two points of time are different. Because determinism is unnecessary redundant hypothesis influenced by religions, according to Ockham's Razor, determinism should be eliminated.

• Economic and Environmental Geology
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• 제46권6호
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• pp.569-580
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• 2013

Co-rich ferromanganese crusts (Fe-Mn crusts) distributed on the seamounts in the western Pacific are potential economic resources for cobalt, nickel, platinum, and other rare metals in the future. Regulations for prospecting and exploration of Fe-Mn crusts in the Area, which enables the process to obtain an exclusive exploration right for blocks of the fixed size, were enacted recently by the International Seabed Authority, which led to public attention on its potential for commercial development. Evaluation and selection of a mining site can be established based on abundance and grade of Fe-Mn crusts in the site as well as topography that should be smooth enough for mining efficiency. Therefore, acquisition of shipboard echo-sounding and acoustic backscatter data are prerequisite to select potential mine sites in addition to visual and sampling operations. Acoustic backscatter data can be used to locate crust-covered areas in a regional scale with the understanding of acoustic properties of crust through its correlation with visual and sampling data. KIOST had collected the topographic and geologic data to assess the resources potential for Fe-Mn crusts in the west Pacific region from 1994 to 2001. However, they could not obtain acoustic backscatter data that is crucial for the selection of prospective mining sites. Therefore, additional exploration surveys are required to carry out side scan sonar mapping combined with seafloor observation and sampling to decide the blocks for application of an exclusive exploration right.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• 제50권12호
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• pp.899-907
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• 2022

According to the Unmanned aircraft system Traffic Management (UTM), drones are permitted to fly up to 150m above ground, which is located in the atmospheric boundary layer where there is considerable wind fluctuation due to turbulence. Although it is difficult to predict when turbulence will occur drone aviation safety could be enhanced by having a better understanding of the characteristics of vertical profile of wind in the flight area. We used wind lidar (WIndMast 350M) to observe vertical profiles of wind at the test site for aviation meteorological observation equipment located near Incheon International Airport in July and September, 2022. In this study, we utilized the observed wind profile data to propose a technique for obtaining information that could help improve the drone aviation safety. The Fourier transform analysis is used to evaluate the temporal characteristics of the horizontal wind speed at various vertical levels up to 350m. We also examined the relative contribution of the variance of wind having scales of less than an hour, a crucial scale for drone flight, to the variance of wind having all scales at each vertical altitude for days with and without precipitation.