• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2003년도 추계학술대회논문집
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• pp.537-543
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• 2003

Condition monitoring and fault diagnosis of machines are gaining importance in the industry because of the need to increase reliability and to decrease possible loss of production due to machine breakdown. By comparing the vibration signals of a machine running in normal and faulty conditions, detection of faults like mass unbalance, shaft misalignment and bearing defects is possible. This paper presents a novel approach for applying the fault diagnosis of rotating machinery. To detect multiple faults in rotating machinery, a feature selection method and support vector machine (SVM) based multi-class classifier are constructed and used in the faults diagnosis. The results in experiments prove that fault types can be diagnosed by the above method.

• 가족자원경영과 정책
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• 제14권2호
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• pp.59-77
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• 2010

This research evaluated the present condition of the family voluntary service group and healthy family campaign, which was being carried out as one of the healthy family culture businesses of the Healthy Family-Support Center. Furthermore, it suggests ways to improve these business activities. Research centered on the analysis of business documents created between December 2006 and November 2007. The results were as follows. First, the family voluntary service group and the healthy family campaign business in the Center must be able to have specificity or individuality. Second, the Center must manage the scale, frequency, and contents of the businesses systematically. Third, the businesses must concern themselves with family life in general, make better use of the advisory committee or steering committee, concern variety of business performing system.

• International Journal of Contents
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• 제3권3호
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• pp.1-5
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• 2007

The main memory DBMS (MMDBMS) efficiently supports various database applications that require high performance since it employs main memory rather than disk as a primary storage. An index manager is an essential sub-component of a DBMS used to speed up the retrieval of objects from a large volume of a database in response to a certain search condition. Previous research efforts on indexing proposed various index structures. However, they hardly dealt with the practical issues occurred in implementing an index manager on a target DBMS. In this paper, we touch these issues and present our experiences in developing the index manager. The main issues are (1) compact representation of an index entry, (2) support of variable-length keys. (3) support of multiple-attribute keys, and (4) support of duplicated keys.

• ETRI Journal
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• 제29권1호
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• pp.120-123
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• 2007

In this letter, we address the problem of resource allocation with efficiency and quality of service (QoS) support in uplink for a wireless CDMA network supporting real-time (RT) and non-realtime (NRT) communication services. For RT and NRT users, there are different QoS requirements. We introduce and describe a new scheme, namely, traffic aided uplink opportunistic scheduling (TAUOS). While guaranteeing the different QoS requirements, TAUOS exploits the channel condition to improve system throughput. In TAUOS, the cross-layer information, file size information, is used to improve fairness for NRT users. Extensive simulation results show that our scheme can achieve high system throughput in uplink wireless CDMA systems, while guaranteeing QoS requirements.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2020년도 가을 학술논문 발표대회
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• pp.4-5
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• 2020

Pipe support is a representative structure that supports slab formwork, and it is a representative temporary equipment that has been systematically managed since the 1990s when the domestic temporary equipment performance test system was introduced. Nevertheless, it is also a reality that many of the products in circulation are used products that are reused and do not meet the performance of the initial manufacturing stage. However, if only new products are insisted, it could lead to delays in the process due to an increase in construction costs and difficulties in timely delivery. On the contrary, it is not acceptable for the safety of the construction site to use products of low quality without verification procedures or standards. Therefore, this study attempts to grasp the management system such as safety certification for temporary equipment and the actual condition of quality control to maintain performance, and propose improvement plans.

• 한국실내디자인학회논문집
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• 제27권2호
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• pp.24-36
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• 2018

Implementing a home modification to enable elderly's safe and independent living is the key plan to realize their aging in place. South Korea in which had entered an aged society is not yet vitalized in home modification for the elderly compared to that of welfare-developed countries, and South Korea provides support that is limited to the low-income elderly. Therefore, this purpose of this study was to analyze the laws related to the home modification, the present condition of home modification support, the standards and guidelines in home modification, the support in house modification cost, and supporting organization and working force in the home modification. Through the analyzing process, this study examined the current situation and problems of institutional support in the home modification for elderly and the proposed plan for institutional improvement. The suggestions based on the results are as in the following. 1) Home modification support law(act or regulation) is required to be improved 2) Home modification support system correspondent to aging process should be provided regardless of their income levels. 3) Delicate plan standard and guideline are necessary for a process of implementing the home modification for the elderly. 4) Information on life behavior is in need for the implementation of elderly-customized home modification. 5) Cost for the home modification should be considered to cover by the Act on Long-Term Care Insurance for the Aged. 6) Housing Welfare Center and Housing Welfare Professional should be actively utilized for the home modification support institution and work force.

• 가정과삶의질연구
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• 제35권2호
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• pp.93-112
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• 2017

The adolescent birth rate has doubled in the recent decade. As a result, the Korean government has implemented support for adolescent single-parent families by expanding the scope of coverage of the Single-parent Family Support Act in 2010. In order to understand whether experiences of facility entry programs and the Single-parent Family Support Act for adolescent single-parents were helpful or not, this study verified the relationship to mental health. This study utilized a part of the National Youth Policy Institute's 'Research on the Actual Condition of the Adolescent Pregnancy, Birth and Rearing Children.' Participants of the study were 218 adolescent single-parents at the age of 24 and younger. This study used the research methods of descriptive statistical analysis, ${\chi}^2$test, t-test, and one-way analysis of variance. The findings and discussion of this study are as below: Firstly, the depression level of adolescent single-parents who had been raised by grandparents was higher than other family types to a meaningful standard and adolescent single-parent's cognition of the original family's economic level was related to self-esteem and parenting efficacy. Secondly, the practical single-parent family support policy for adolescent single-parent's pregnancy, birth and rearing children has shown a higher reception rate, and medical service of facility entry programs has a higher satisfaction level. However, some of the facility entry programs and the Single-parent Family Support Act have a low reception rate and it should be considered whether to maintain them or not.Lastly, parts of facility entry programs and the Single-parent Family Support Act for adolescent single-parents have increased self-esteem and parenting efficacy and reduced parenting stress and depression's levels.

• 한국직업건강간호학회지
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• 제16권1호
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• pp.67-77
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• 2007

Purpose: To provide concretely for support system to occupational health management grasped the present condition about the private support organizations for the migrant workers. Method: The subjects were 30 organizations to support migrant workers with the healthy and medical problem. The organizations were investigated by the internet search, and the visiting and telephone interview. Then a expert advisory conference and researchers' regular meeting were held. Result: The support organizations for the migrant workers played multiple activities, but the medical treatment and education regarding the occupational safety & health were scarcely accomplished. The government constructs a network between the organizations. A health problem of a worker should be requested to the medical centers which cooperated with the private support organizations, it makes business expand to the existing organizations which take charge of the health business of a small-scale workplace rather than it constitutes new organizations. The organizations which can manage which build the online network which can grasp all the information concerning the migrant worker from whom the government became a principal axis. Conclusion: Support system on the occupational safety and health for migrant workers that it will be help to the occupational disease prevention and occupational safety and health management, is needed.

• Geomechanics and Engineering
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• 제18권4호
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• pp.363-371
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• 2019

In this study, the load carrying behavior of piled rafts installed in inclined bearing rock layer was investigated for rock-mounted and -socketed conditions. It was found that settlements induced for an inclined bearing rock layer are larger than for a horizontal layer condition. The load capacity of piled rafts for the rock-mounted condition decreased as rock-layer inclination angle (${\theta}$) increased, while vice versa for the rock-socketed condition. The load capacities of raft and piles both decreased with increasing ${\theta}$ for the rock-mounted condition. When bearing rock layer was inclined, loads carried by uphill-side piles were greater than those by downhill-side piles. The values of differential settlements of rock-mounted and -socketed conditions were not significantly different whereas slightly higher for the rock-socketed condition. The values of load sharing ratio (${\alpha}_p$) and its variation with settlement were not markedly changed by the inclination of bedrock. It was shown that ${\alpha}_p$ for piled rafts installed in rock layer was not affected by ${\theta}$ whereas actual loads carried by raft and piles may vary depending on the pile installation and rock-layer inclination conditions.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2011년도 춘계학술대회 논문집
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• pp.700-705
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• 2011