• 가족자원경영과 정책
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• 제20권1호
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• pp.23-42
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• 2016

The purpose of this study was to explore a typology of leisure participation, investigate determinants of leisure participation types, and analyze differences in life satisfaction by the types of leisure participation of the elderly. The data source for this research was the 2014 Time Use Survey conducted by the Korea National Statistical office (KNSO). The statistical methods for the analysis were mean, standard deviation, ANOVA, Duncan test, cluster analysis, and logistic regression analysis. Leisure participation were classified into five types based on five categories; social activities, religious activities, media, sports, time-spending activity. The five types were named "general", "insufficient", "religious oriented", "media oriented", and sports oriented" type. Gender, health condition were identified as important determinants for the types. Life satisfaction was different according to leisure participation type of the elderly. Religious oriented type showed the highest score of life satisfaction and media oriented type showed the lowest.

• 천문학회보
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• 제40권1호
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• pp.57.1-57.1
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• 2015

We will obtain deep wide-field images of the 150-200 nearby bright galaxies in the southern hemisphere, in order to explore the origin of faint extended features in the outer regions of target galaxies. Using KMTNet telescopes, we will take very deep images, spending ~ 4.5 hr for the B and R filters for each object. With this dataset, we will look for diffuse, low-surface brightness structures including outer disks, truncated disks, tidal features/stellar streams, and faint companions.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2004년도 하계종합학술대회 논문집(1)
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• pp.123-126
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• 2004

Demands on dealing with multimedia data through the network have been increased, and networking multimedia devices require processing, transmitting , and receiving the digital data. In order to implement the network for high performance and low cost, we may have to integrate the dedicated hardware into a system on a chip by spending an extra amount of silicon resource. In this paper, we describe hardware implementation of TCP/IP protocol stack which is now popular to connect multiple PCs and peripherals by means of networks. For evaluation we used ALTERA APEX 20K600EBC652 FPGA with 600,000 gates. The operating frequency is estimated 29.9MHz and it used area of $26\%$.

• 한국벤처창업학회:학술대회논문집
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• 한국벤처창업학회 2017년도 춘계학술대회
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• pp.51-51
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• 2017

In the domain of IS, game was used as a tool to enhance the results of decision making, education and more. In another stream of research, researchers focused on revealing the motive of people playing games. This study focuses on the effect of the tool; increased accessibility via mobile, to online game using patterns and behaviors. Due human reaction towards competition, technology acceptance and the online game's gambling traits, it is expected that the increased mobile accessibility (tool) will increase and intensify the game playing behavior. Also, it is expected that the in-game purchase will increase as well. In depth interview with both game service providers and players is planned to confirm that the mobile version acted as a tool to increase accessibility, rather than a additional game. Survey along with an interview is to be conducted to find relevant play and spending patterns if they are to exist.

• Asian Journal of Innovation and Policy
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• 제4권2호
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• pp.200-216
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• 2015

This paper empirically investigates the role of R&D intensity on market concentration of firms using four key market valuation variables, namely (1) market share, (2) labor intensity, (3) firm age and, (4) firm's market value. The empirical tests use database at firm level for the Indian IT sector from 1999 to 2013 from the CMIE Prowess database. The results of the regression analyses partially support our hypothesis that R&D intensity positively influences firm's market value measure by the H-index. The test results are consistent with the hypotheses that R&D spending is more valuable for firms with larger market shares, higher labor intensity, and firms that are diversified.

• Journal of the Korean Society for Industrial and Applied Mathematics
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• 제10권2호
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• pp.27-40
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• 2006

휴대인터넷은 유비쿼터스 시대를 앞당기는 등, 생산유발, 부가가치 창출, 수출유발, 고용창출의 경제적 파급효과와 함께 서비스 품질 향상, 이용요금의 인하, 생활의 변화 등 이용 측면에서 영향력이 클 것으로 전망되고 있다. 또한 휴대인터넷은 일부 소수의 국가를 제외하고는 아직 상용화되지 않은 서비스로, 우리나라는 기술표준화, 관련 노하우 축적, 부품의 국산화, 마케팅 경험 등에서 우위와 역량을 창출할 수 있어 향후 IT산업의 국가경쟁력에 크게 기여할 것으로 봅니다.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1998년도 가을 학술발표논문집(II)
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• pp.386-391
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• 1998

Recently, high performance concrete developed has a good quality at fresh and hardened state, but high binder contents results in spending much money on manufacturing and many cracks by drying and autogenous shrinkage. Therefore, in this paper, not only prevention of cracks caused by drying and autogenous shrinkage, but improvement of quality and accmplishment of economy by applying F.A(fly ash), S.F(silica fume) and CSA(calcium sulfa aluminate) expansive additives as an inorganic admixtures in W/B 35% are discussed. According to the experimental results, when 5% of CSA Expansive additives and 15:5 (F.A:S.F)are replaced at unit cement content, high performance concrete with both good compensation of drying and autogenous shrinkage at hardened state is accomplished.

• 대한의용생체공학회:의공학회지
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• 제16권2호
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• pp.157-166
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• 1995

The Electroencephalogram (EEG) and evoked potential (EP) t;ave widely been used for study of brain functions. The EEG and EP signals acquired from multi-channel electrodes placed on the head surface are often interfered by other relatively large physiological signals such as electromyogram (EMG) or electroculogram (EOG). Since these artifact-affected EEG signals degrade EEG mapping, the removal of the artifact-affected EEGs is one of the key elements in neuro-functional mapping. Conventionally this task has been carried out by human experts spending lots of examination time. In this paper a neural-network based classification is proposed to replace or to reduce human expert's efforts and time. From experiments, the neural-network based classification performs as good as human experts : variation of decisions between the neural network and human expert appears even smaller than that between human experts.

• 아동학회지
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• 제28권6호
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• pp.201-215
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• 2007

This study examined cortisol patterning in 160 children(79 boys, 81 girls; aged 4-5) attending twelve childcare centers in Seoul and Kyunggi Province. Saliva samples for the assay of cortisol were collected twice a day at 10 : 30 am and 3 : 30 pm. Saliva samples were collected again within a week after the first collection. Data were analyzed with descriptive statistics and multiple regression analysis. The cortisol level of the afternoon showed neither increase nor decrease compared to morning. Regression analysis indicated that time children spent at childcare centers accounted for increased afternoon cortisol levels; that is, higher levels of afternoon cortisol were associated with more hours per day at childcare centers.

• 한국해양공학회:학술대회논문집
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• 한국해양공학회 2003년도 추계학술대회 논문집
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• pp.30-34
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• 2003

The coast area of our country has various tourist attraction factors of its own such as plenty of islands, uncontaminated waters and so on. Nevertheless, sea tourism and leisure facilities have not been developed enough since the national tourist/leisure policies have mainly been focused on the land tourism so far. Recently, the lake and sea areas are becoming more an more popular to people for spending their leisure times, and they, especially the young generations, are eagerly searching for some good ocean spots to enjoy the dynamics maritime sports. In this paper, we worked on the first design phase of environmentally and visually adaptive yacht, taking the cost effectiveness and the safety factors into account as well.