• Journal of Internet Computing and Services
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• v.13 no.3
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• pp.93-105
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• 2012

A data stream is a series of tuples which are generated in real-time, incessant, immense, and volatile manner. As new information technologies are actively emerging, stream processing methods are being needed to efficiently handle data streams. Especially, finding out an efficient evaluation for a multi-way join would make outstanding contributions toward improving the performance of a data stream management system because a join operation is one of the most resource-consuming operators for evaluating queries. In this paper, in order to evaluate efficiently a multi-way join continuous query, we propose a novel method to decrease the cost of a query by eliminating unsuccessful intermediate results. For this, we propose a matrix-based structure for monitoring data streams and estimate the number of final result tuples of the query and find out unsuccessful tuples by matrix multiplication operations. And then using these information, we process efficiently a multi-way join continuous query by filtering out the unsuccessful tuples in advance before actual evaluation of the query.

• Journal of applied mathematics & informatics
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• v.7 no.3
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• pp.1045-1058
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• 2000

In usual synchronous parallel computing, workload balance is a crucial factor to reduce idle times of some processors that have finished their jobs earlier than others. However, it is difficult to achieve on a heterogeneous workstation clusters where the available computing power of each processor is unpredictable. As a way to overcome such a problem, the idea of asynchronous methods has grown out and is being increasingly used and studied, but there is none for eigenvalue problems yet. In this paper, we suggest a new asynchronous method to solve some singular matrix problems, that can also be used for finding a certain eigenvector of some matrices.

• Korean Institute of Interior Design Journal
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• no.29
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• pp.103-111
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• 2001

The ideal housing in the 21st century means that it can provide people with the balanced life between nature and human life, while is possible through the systematic harmony of nature, environment, and human. As our society increasingly pays attention to the importance of environment, environment friendly houses and ecological dwellings are being built. If we add our own cultural environment attribute and historical identity to the ecological housing, we can create the most unique Korean ecological architecture. This study examines ecological interior expression methods from the traditional housing architecture which started out of nature, in order to find out an ecological approach in the interior design of the dwelling space. Based upon this examination, it mainly focuses on how these methods can be applied to a modern housing architecture. From an ecological perspective, the traditional house interior has two distinct characteristics; nature friendly and human friendly, because it considered nature and human harmoniously. The interior of the traditional housing can be divided into three types; nature friendly, health friendly, and human friendly. Finally, this study investigates the ecological value of the three types and application of them to modern housing. It will help to find out the harmonious way of building a house harmonizing both nature and human. Especially, considering that the nature is being destructed and the health of human is deteriorating due to the destruction of the nature, this study will show a feasible alternative to build the most Korean style of environmental architecture.

• Journal of Hospice and Palliative Care
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• v.23 no.2
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• pp.39-43
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• 2020

This paper aims to explore how to help terminally ill patients and their families find meaning in their suffering from the logotherapeutic perspective, which is the essence of palliative care. For this purpose, this paper examines the main concepts and principles of logotherapy, and specific approaches based on the logotherapeutic perspective to help terminally ill patients and their families find meaning in life are presented. Emphasizing the will to meaning as the primary motive to explain human behaviors and based on its unique perspective of the human being, which is called the dimensional ontology, logotherapy considers the human being to consist of the body, the mind, and the spirit. The dimensional ontology implies that the human being "has" the body and the mind, but the human being "is" the spirit itself. Therefore, even though a human being can be sick physically or psychologically, Accordingly, it is essential to help these patients realize that they are not their illnesses, but just have them, and to rise above themselves to reach out toward something meaningful or someone to love; despite their suffering, they can still do something meaningful, even in a small way. Above all, the most important thing for these patients is to acknowledge that they have already lived a meaningful life and to believe that their meaningful work has been safely preserved in the past and nothing can take it from them, for as spiritual beings, their lives have been meaningful unconditionally.

• Journal of architectural history
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• v.11 no.3 s.31
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• pp.53-68
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• 2002

Since the 17th century, the finance for the government construction was demanded unlike the early chosun dynasty. It was consequent upon a transition in the supply method of materials and labors for the construction. The government construction being enforced in chronic financial difficulties had to undergo lack of funds. Especially, a rising construction cost by purchasing lots of materials including wood, and by employing labors weighted the difficulties. In order to put forward a construction, new and various efforts besides diversification in sources of finance ad been looked for. The efforts were driven in three parts which were to be the management of labor and materials, and the way of construction execution. As a result of spending a great effort to save cost, an extinguished improvement in the way of construction execution came out with 'Injungjeon-yeongkweon' in the year 1805.

• Korean Journal of Social Welfare
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• v.64 no.1
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• pp.225-247
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• 2012

This study aims at exploring an effective way for social welfare in order to promote psychological well-being of a mother having a child with autism. To achieve this purpose, this study examined the related factors of parenting stress, family functioning, social support, and redefinition of family affecting psychological well-being of a mother having a child with austin by way of applying the Double ABCX model. A survey was conducted with a sample of 207 mothers having a child with autism in Daegu. Results from the survey are as follows: First, there were significant impacts of parenting stress on social support, family functioning, the redefinition of family on crisis situation, and psychological well-being. Second, family functioning and social support had no significant effect on mothers' psychological well-being, while the redefinition of family on crisis situation had significant influences on the psychological well-being of mothers having a child with autism. Third, it turned out that family functioning, social support, and the redefinition of family on crisis situation played a mediating role between parenting stress and psychological well-being. Based on these results, this study suggests that family functioning should be strengthened for promoting psychological well-being of mothers having a child with autism. We should construct and provide social supports in multilateral aspects and help mothers having a child with autism positively recognize stressful situations and improve their capacities to overcome them as well.

• Journal of Korean Society of Rural Planning
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• v.17 no.1
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• pp.79-88
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• 2011

In order to improve the quality of life and support the successful living of the elderly people in rural community, the Senior Well-being Villages Project has been carried out by Rural Development Administration since 2005 in Korea. This timely project, however, produces good results with 582 villages so far, we must endeavor to upgrade it more effectively. This study is to find complementary way of improving the project, and the results of the study are summarized as follows. First of all, the sustainable and practical strategies of the health care for the rural elderly must be adopted. The elderly people's mutual care system can be a good option for improving the existing project. Secondly, the cooperative heath care system must combine with this project. In this regards, health cooperative federation system can be also a challenging option. The beneficially activity of rural elderly people, which is a component of this project, must be linked with rural social enterprise or community venture. The local experts or capable men of various fields including family, the aged problem, social welfare, and regional development, must be appointed, and the support system enables them to do their jobs actively in the Senior Well-being Villages Project as well as other community works.

• Journal of the Korean Society of Safety
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• v.21 no.5 s.77
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• pp.22-27
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• 2006

Even though the interior of urban transit vehicle has been changed as a preventing measure against fire to make it inflammable, there remains a possibility of fire breaking out in case of gasoline etc being brought in the subway. However, there is also the possibility that in case if fire toxic gas is generated and hot air spreads in carriage it will prove very dangerous for people sitting inside. This is a comparative study where we compare simulation results with model examining the time and direction the fire spreads when it breaks out. Also there is vertical distribution of temperature in carriage where the fire spreads out. This study is about demonstrating how to establish smokeless system in urban vehicle, about its necessity, and about vehicle system restructuring. This study also makes an effort to find more advanced method for efficient fire safety in trains. In existing vehicles, in case of fire, the smoke can't go out when doors are closed and hence it spreads in whole train. Even though the method of using ventilation or exhaust established inside the carriage to throw smoke out is much better than the way of opening end doors in each carriage, this study is trying to do research on second way. Through simulation we see that in second case, even though not as good as the first one, smoke can exit through gates. Even though the first method is better, the second can also be uses to let fire out. We can know that in the first case as the smoke can exit out faster, it provides more safety for people. So this system provides better fire safety condition.

• Journal of the Korean Society of Industry Convergence
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• v.1 no.2
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• pp.31-40
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• 1998

The aim of this study is to examine the expression of the meaning of tradition and the archetype of korean image in it in order to find out korean image on reflection of the meaning of tradition. The results are as follows. 1) The nature of tradition illuminates the past, and lights up the present. It cannot be a portrait which enable to have a future prospect and also a cornerstone a tutore pave the way for of the better direction. 2) It's meaning like to say that korean style it self is considered as an expression of tradition. But it korean tradition has a tradition course in a dialectical way, new creation will be possible, 3) The social and cultural aspects change as time goes by through the tendency of society and it's culture we can get some imformation about the inner spirit of human being. The inner spirit of human being is the spirit of our nation so that we can get oringinality from the culture of our nation. 4) On the aspect of idea oganic system must be visualized on the basis of scale whichs accustomed to our emotion. 5) We can also find out the growing tendency that architects are willing to express the typological image as spacial arrangement and ideology of the Korean image to their works recently. It can be defined that it is a progressive tendency for the expression of Korean image in contemporary architecture. This study is needed to have move practical and concrete examination in order to approach more ideologically the expression of the sense of tradition.

• Hwankyungkyoyuk
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• v.12 no.1
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• pp.264-275
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• 1999

The purpose of this study is to suggest a systematic and effective way of environmental education by analyzing current environment classes being provided as one of elective courses in some middle schools and their impact on the students. To conduct this study, 1,467 students of 36 middle schools were asked to fill out the questionnaire of 30 items and they were divided into two different groups depending upon whether they were taking ‘environment’ classes at school or not. The survey was peformed to see if there is a difference between these two groups in terms of their recognition of environmental problems and their daily practice of that concept. The conclusion is that the students taking environment classes have more knowledge about environmental issues than the ones without the classes, but their actual behaviors show no difference. In that point, it is necessary to take up a more effective and practical way of environmental education together with teaching its theoretical values.