• Journal of the Institute of Convergence Signal Processing
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• v.14 no.2
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• pp.70-76
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• 2013

In this paper, we propose the bandpass form of discrete prolate spheroidal sequences(DPSS) which have the maximal energy concentration in a given passband and as such are very appropriate to obtain a projection of signals. The basic properties of the bandpass DPSS are also presented. Assuming a signal satisfies the finite time support and the essential band-limitedness conditions with a known center frequency, signal representation and interpolation techniques for band-limited signals using the bandpass DPSS are introduced where the reconstructed signal has minimal out-of-band energy. Simulation results are given to present the usefulness of the bandpass DPSS for efficient representation of band-limited signal.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2004.05a
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• pp.200-204
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• 2004

It is a global consent that we should conserve our energy consumption, due to our awareness to the environmental problems and the limitedness of the natural resource. In the country, the level of energy consumption is more than it is needed, according to its living standard and the proportion of resources imported from other countries. Educational program focused on energy conservation is essential to overcome these problems. This paper outlines a basic study on the development of an energy conservation education program for children. This program makes students aware of the importance and difficulties in energy conservation. The students can then make their own contribution and besides circulation of resources and improvement of health problems.

• Proceedings of the Korea Information Processing Society Conference
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• 2012.11a
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• pp.537-539
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• 2012

영상신호처리와 같이 공간적 신호처리를 하는 실시간 신호처리시스템에서는 서로 다른 입출력 순서를 갖는 특정 크기의 블록 단위 신호처리가 요구된다. 다양한 영상압축코덱에 쓰이는 엔트로피 코딩을 위한 데이터 재정렬이 대표적인 예이다. 이 경우 동일 주소에 데이터를 읽고 쓰는 단일 버퍼링 방법이 저장 공간을 최소화 하는 최적의 방법이지만 상이하고 불규칙한 입출력 순서를 갖는 경우 이 방법을 적용할 경우 불규칙한 순서열이 이어지기 때문에 구현하기 어렵고 두 배의 저장 공간을 소모하는 이중 버퍼링 방법을 주로 사용한다. 본 논문에서는 불규칙한 순서열 변화를 보이는 임의의 상이한 입출력 순서를 갖는 동시 입출력 동작에서도 예측가능한 유한한 횟수 안에 규칙적인 반복성이 나타남을 입증하고 자원을 최소화하는 단일 버퍼링 방법이 적용될 수 있음을 보였다.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2000.04a
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• pp.389-393
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• 2000

Ethnography, a major research method in Anthropology, has been recently applied in human-centered design research. Since ethnography has empirical, naturalistic, holistic and eclectic characteristics, it is needed a guideline to apply ethnography into design research in accordance with a characteristic of project. Design project in which ethnography is applied can be categorized by two criteria; degree of newness of project goal(existing user-potential user) and limitedness of worksite(site-oriented-work-oriented). Among work-site activities, technology in use, and user group culture, it should be decided which content to content to focus more than others and thus what kinds of research techniques to apply in the ethnographic research.Case study was to design an interior of a Korean express train. This project is site-oriented and has an existing-potential users. Therefore, video ethnography was effectively applied to obtain chronological data of activity potential users. Therefore, video ethnography was effectively applied to obtain chronological data of activity flow, and participant observation was applied to obtain statistical data of synchronous activities. Case study shows a concrete process example of how to apply ethnography into design research.

• Korean Institute of Interior Design Journal
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• v.15 no.3 s.56
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• pp.56-64
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• 2006

Human Being is being that have the reason as well as body, and first liaison consists through this body justly with outside. The essence of environmental problem such as today can speak that is a harmful traces for health that leave in air, water, soil that pass body. Actual nature is 'Ecological nature', that is necessary for human life directly in survival and offer the integrated relations with harmony. This grafting of principle, that is a construction for architecture and interior architecture in environment furtherance, is required. This is not a subject of usefulness and contemplation, but essential approach the cogredience, that is forming connection directly with nature, is required. Therefore, this research does Questel about 'Nature epistemology, which nature and human's relation can be integrated by alive practical relation. Through this, the Relatedness of 'Natural environment and construction surrounding' is accomplished 'the whole unity' and this research wish to investigate basis that a actual human work's environment can be completed as 'Ecological nature'.

• The Journal of Korean Academic Society of Nursing Education
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• v.9 no.2
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• pp.329-339
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• 2003

The purpose of this study is to consider of meaning in life based on Frankl's theory and to propose of hospice nursing according to conceptual framework of meaning in life. The conceptual framework of meaning in life is composed of 4 phases. According to the first phase, acceptance & awareness of self and life, hospice nurse should helps dying patient to accept limitedness of human existence and death. and according to the second phase, actualization of creative value, hospice nurse can helps dying patient to discover meaning in life through doing a deed for last time before his death. According to the third phase, actualization of experiential value, hospice nurse can helps them to discovery of meaning by experiencing of love through meetings with other people, nature, and god. According to the forth phase, actualization of attitudinal value, hospice nurse can helps them to discovery of meaning by realizing meaning in suffering and death through exercising of the inner freedom to choose bravery and acceptance in the face of death and misfortune. As mentioned above, the Frankl's theory accords with the core of hospice nursing that helps people to accomplish human essence in suffering and death. therefore we accepted Frankl's point of view, asserted that one of the most important roles of a hospice nurse as a supporter and sustainer for dying patients is to help patients to find meaning in life even in the course of death. To achieve the goal, hospice nurses should try to have a firm faith through philosophical introspection about life, death, human existence and meaning in life what the most important goal of life is to discover meaning in life and human have the duty and responsibility of recognizing and pursuing meaning up to the last moment of life.

• Spatial Information Research
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• v.22 no.6
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• pp.45-54
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• 2014

Establishment of safety net for the socially disadvantaged attracts large attention because of the recent crime increasing against vulnerable groups. For the successful establishment of social safety net, the test-bed for evaluation and realization of crime-related research results is required. However, previous R&D test-bed projects such as The Korean Land Specialization Program or U-Eco City project remains only to the stage of verification. Therefore, there are limitedness for realization of result technologies or sustainable operation & management of test-bed after projects finished. So, sustainable operation & management system and guideline of test-bed are necessary. Therefore, this study reviews the strengths and weaknesses of existing test-bed cases and intelligent security researches. After reviewing, the concept of a Intelligent Security Test-bed is established and appropriate test-bed selection criteria is also suggested. Based on objective criteria, selected test-bed can achieve sustainable management even after finishing the project and contribute the construction of standard model for citizen's safety.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.33 no.3A
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• pp.311-318
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• 2008

We propose new pulse shapes for FCC-compliant ultra-wideband (UWB) radios. The projections onto convex sets (POCS) technique is used to optimize temporal and spectral shapes of UWB pulses under the constraints of all of the desired UWB signal properties: efficient spectral utilization under the FCC spectral mask, time-limitedness, and good autocorrelation. Simulation results show that for all values of the pulse duration, the new pulse shapes not only meet the FCC spectral mask most efficiently, but also have nearly the same autocorrelation functions. It is also observed that our truncated (i.e., strictly time-limited) pulse shapes outperform the truncated Gaussian monocycle in the BER performance of binary TH-PPM systems for the same pulse durations. The POCS technique provides an effective method for designing UWB pulse shapes in terms of its inherent design flexibility and joint optimization capability.

• Korean Journal of Social Welfare
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• v.59 no.3
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• pp.5-32
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• 2007

Using a national survey data conducted by the Beautiful Foundation, this study attempts to examine the bilateral relationships between philanthropic effort and social trust and between volunteering effort and social trust by using simultaneous equation model. This study also attempts to examine the socialization effect and intergenerational effect of philanthropy and volunteering in family, school, and community. This study found that both philanthropic effort and volunteering effort have a bilateral relationship with social trust. The bilateral relationship between giving and volunteering and social trust suggests that not only can social trust affect the increase of giving and volunteering but giving and volunteering can also influence social trust. Thus, by strengthening trust and facilitating giving and volunteering, we can construct and promote culture of sharing in our society. On the other hand, in the analysis on individual's educational experience in giving and volunteering during school years and individual's family experience (parental practice) in giving and volunteering during school years, it was found that family experience was statistically significant on philanthropic effort and volunteering effort. The result suggests that considering the validity of intergenerational effect in giving and volunteering, it is strategically vital for our society to facilitate and promote family practice in giving and volunteering throughout diverse programs and social marketing. Although this study has a limitation due to the limitedness of the original data, it made a significant contribution to advancing knowledge on the relationship between giving and volunteering and social trust by using elaborate analysis methods. This study emphasizes the necessity of continuous research; more advanced and systematic study based on a more elaborate model and solid data such panel data should be continued for a better understanding of philanthropic and volunteering behavior that can be an important soil for the development of nonprofit human service organizations. Finally, based on the results of the study, this study discusses research directions and practical implications to deepen and broaden the culture of sharing in Korea.