• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2006년도 심포지엄 논문집 정보 및 제어부문
• /
• pp.15-17
• /
• 2006

This paper presents a new global intensity compensation method for extracting moving object in a visual surveillance system by compensating time variant intensity changes of background region. The method that compensates a little changes of intensity due to time variant illumination change and automatic gain control of camera is called global intensity compensation. The proposed method expresses global intensity change with a mapping table to describe complex form of intensity change while the previous method models this global intensity change with a simple function as a straight line. The proposed method builds the mapping table by calculating the cross histogram between two images and then by selecting an initial point for generating the mapping table by using Hough transform applied to the cross histogram image. Then starting from the initial point, the mapping table is generated according to the proposed algorithm based on the assumption that reflects the characteristic of global intensity change. Experimental results show that the proposed method makes the compensation error much smaller than the previous GIC method

• 대한지역사회작업치료학회지
• /
• 제4권1호
• /
• pp.85-92
• /
• 2014

목적 : 본 연구의 목적은 운동 강도에 따른 지속적인 운동습관이 수면장애 성인에게 어떠한 영향을 줄 수 있는지 알아보고 수면장애에 효과적인 운동 강도를 알아보고자 하였다. 연구방법 : 본 연구는 K시에 거주하는 수면장애를 가진 30, 40대 성인 남성 90명을 대상으로 하였다. 집단은 고강도 운동집단 30명, 중강도 운동집단 30명, 저강도 운동집단 30명으로 구성하였다. 세 집단의 총 수면지수와 멜라토닌 농도의 비교를 통하여 수면장애의 운동 강도별 효과를 비교하였다. 결론 : 수면장애의 운동 강도별 운동을 수행한 결과, 운동 수행 전, 후의 총 수면지수에서 고강도와 중강도의 운동이 유의성이 있었지만 수면장애에서는 중강도 운동이 효과적이었고, 운동수행 전, 후의 멜라토닌 농도 변화에서도 중강도 운동이 효과적이었다. 결론 : 본 연구의 결론은 성인의 수면장애는 지속적인 운동이 효과가 있지만 저강도 운동과 고강도 운동보다는 중강도 운동이 효과적임을 알 수 있었다.

• Journal of Forest and Environmental Science
• /
• 제33권4호
• /
• pp.295-304
• /
• 2017

This study compared and analyzed the construction of a land use change matrix for the Intergovernmental Panel on Climate Change's (IPCC) land use, land use change, and forestry area (LULUCF). We used National Forest Inventory (NFI) permanent sample plots (with a sample intensity of 4 km) and permanent sample plots with 500 m sampling intensity. The land use change matrix was formed using the point sampling method, Level-2 Land Cover Maps, and forest aerial photographs (3rd and 4th series). The land use change matrix using the land cover map indicated that the annual change in area was the highest for forests and cropland; the cropland area decreased over time. We evaluated the uncertainty of the land use change matrix. Our results indicated that the forest land use, which had the most sampling, had the lowest uncertainty, while the grassland and wetlands had the highest uncertainty and the least sampling. The uncertainty was higher for the 4 km sampling intensity than for the 500 m sampling intensity, which indicates the importance of selecting the appropriate sample size when constructing a national land use change matrix.

• 무역학회지
• /
• 제41권4호
• /
• pp.61-90
• /
• 2016

본 연구는 수출제조기업을 대상으로 기업의 생산성변화에 영향을 미치는 요인을 분석하는데 목적이 있다. 기존 실증연구에 기초하여 수출제조기업의 생산성변화에 영향을 미치는 변수를 선정하고, 이러한 변수들과 수출제조기업의 생산성변화간의 관계를 분석하였으며, 그 결과는 다음과 같다. 첫째, 수출제조기업 355개 대상으로 생산성변화에 영향을 미치는 요인을 분석한 결과에서 수출제조기업의 혁신활동과 총자산은 생산성변화에 긍정적인 영향을 미치는 반면, 인건비비율, 자기자본비율 및 유동비율은 생산성변화에 부의 영향을 미치는 것으로 나타났다. 둘째, 수출제조대기업에서 혁신활동과 무형자산은 생산성변화에 긍정적인 영향을 미치는 반면, 인건비비율, 판매비비율 및 자기자본비율은 생산성변화에 부의 영향을 미치는 것으로 나타났다. 셋째, 수출제조중소기업에서 혁신활동은 생산성변화에 긍정적인 영향을 미치는 반면, 인건비비율 및 자기자본비율은 생산성변화에 부의 영향을 미치는 것으로 나타났다. 넷째, KOSIP 상장 수출제조기업에서 무형자산은 생산성변화에 긍정적인 영향을 미치는 반면, 인건비비율, 판매비비율 및 유동비율은 생산성변화에 부의 영향을 미치는 것으로 나타났다. 다섯째, KOSDAQ 상장 수출제조기업에서 혁신활동 및 총자산은 생산성변화에 긍정적인 영향을 미치는 반면, 인건비비율 및 자기자본비율은 생산성변화에 부의 영향을 미치는 것으로 나타났다.

• 대한후두음성언어의학회지
• /
• 제9권1호
• /
• pp.11-16
• /
• 1998

Background and Objectives : Electrolarynx has been used as one of the methods of rehabilitation for the laryngectomees. Previous electrolarynx could not alter frequency and intensity simultaneously. This institute developed an electrolarynx named "Evada" using FSR(force sensing resistor) sensor, which can control the frequency(and/or intensity) simultaneously. This study was performed for the normal control and laryngectomees with three types of electrolarynx (Evada, Servox-inton, Nu-vois) to reveal functional characteristics of Evada Materials and Methods : five laryngectomees and five normal adults were made to express there sentences(discriptive sentence, "You stay here" ; question sentence, "You stay here？" ; exclamation sentence, "You!! stay here!"), using three types of electrolarynx. Frequency change and intensity change from first and last vowel was calculated in three sentences and analyzed statistically by paired T-test. Results : The frequency change in the question sentence and exclamation sentence was more prominent in Evada than in Servox-inton and Nu-vois. The intensity change in the question sentence and exclamation sentence was also more prominent in Evada than in Servox-inton and Nu-vois. Conclusions : Evada could control frequency and intensity simultaneously and control degree of frequency(and/or intensity) according to the pressing force into the button. Evada could adjust continuously frequency and intensity during conversation. So, Evada is better in producing intonation and contrastive stress than Nu-vois and Servox-inton.

• International Journal of Quality Innovation
• /
• 제5권1호
• /
• pp.1-9
• /
• 2004

The nonhomogeneous poisson process (NHPP) is often used to model repairable systems that are subject to a minimal repair strategy, with negligible repair times. In this situation, the system can be characterized by its intensity function. There have been many NHPP models according to intensity functions. However, the intensity function of system in use can be changed because of repair or its aging. We consider the single change point model as the modification of the power law process. The shape parameter of its intensity function is changed before and after the change point. We detect the presence of the change point using Bayesian methodology. Some numerical results are also presented.

• 환경영향평가
• /
• 제20권5호
• /
• pp.585-600
• /
• 2011

South Korean central government has launched the first comprehensive climate change policies in 1999, and they have been renewed every three year. The third policies ended in 2007. However, it is quite rare to analyze whether the climate change policies are effective against climate change. In this context, this paper aims at analyzing the effectiveness of climate change policy which was launched for seven years from 1999 to 2007 in South Korea. The effectiveness analysis of policy can be done in terms of the individual policy and/or all policies being synthesized as a comprehensive unit. Employing the latter methodology, this paper analyzed the effectiveness on the basis of economic growth as independent variable, greenhouse gas emission as dependent variable, and energy use and its process as intervening variable. Seven analytic indicators covering the three variables were selected on the basis of two points in time before and after climate change policy having been launched. The seven indicators were analyzed in terms of three aspects. They were the change in the state of each indicator, the effectiveness of climate change policy from 1999 to 2007, and the effectiveness process from 1999 to 2007. The effectiveness process was analyzed in terms of the relational context and its flow processing path. Economic growth was advanced remarkably with increase in the total consumption of energy. As a result, greenhouse gas emission increased. However, energy efficiency increased with significant decrease in energy intensity, carbon intensity, and energy elasticity. The expansion of new and renewable energy over total energy supply was not effective significantly on the decrease in greenhouse gas emission. The processing path of climate change policy being effective advanced toward increase in energy efficiency through energy intensity rather than toward sustainable development. Such a way of the effectiveness of climate change policy implies that most policies focused on adaptation rather than on mitigation.

• 한국측량학회지
• /
• 제34권2호
• /
• pp.195-206
• /
• 2016

The remote sensing technique using SAR data have many advantages when applied to the disaster site due to its wide coverage and all-weather acquisition availability. Although a single-pol (polarimetric) SAR image cannot represent the land surface better than a quad-pol SAR image can, single-pol SAR data are worth using for disaster-induced change detection. In this paper, an automatic change detection method based on a mixture of GGDs (generalized Gaussian distribution) is proposed, and usability of the textural features and intensity is evaluated by using the proposed method. Three ALOS/PALSAR images were used in the experiments, and the study site was Norita City, which was affected by the 2011 Tohoku earthquake. The experiment results showed that the proposed automatic change detection method is practical for disaster sites where the large areas change. The intensity information is useful for detecting disaster-induced changes with a 68.3% g-mean, but the texture information is not. The autocorrelation and correlation show the interesting implication that they tend not to extract agricultural areas in the change detection map. Therefore, the final tsunami-induced change map is produced by the combination of three maps: one is derived from the intensity information and used as an initial map, and the others are derived from the textural information and used as auxiliary data.

• 대기
• /
• 제18권2호
• /
• pp.111-120
• /
• 2008

This study presents a change-point in the 30 years (1976-2005) time series of the annual and the heavy precipitation characteristics (amount, days and intensity) averaged over South Korea using Bayesian approach. The criterion for the heavy precipitation used in this study is 80 mm/day. Using non-informative priors, the exact Bayes estimators of parameters and unknown change-point are obtained. Also, the posterior probability and 90% highest posterior density credible intervals for the mean differences between before and after the change-point are examined. The results show that a single change-point in the precipitation intensity and the heavy precipitation characteristics has occurred around 1996. As the results, the precipitation intensity and heavy precipitation characteristics have clearly increased after the change-point. However, the annual precipitation amount and days show a statistically insignificant single change-point model. These results are consistent with earlier works based on a simple linear regression model.

• 한국전문물리치료학회지
• /
• 제16권2호
• /
• pp.41-49
• /
• 2009

This study was designed to investigate the effects of treadmill exercise of low-intensity and moderate- intensity on the functional recovery and histological change in spinal cord injury (SCI) rats. SCI was induced by the spinal cord impactor dropped after laminectomy. Experimental groups were divided into the Group I (normal control), Group II (non-treatment after SCI induction), Group III (low-intensity treadmill exercise after SCI induction), Group IV (moderate-intensity treadmill exercise after SCI induction). After operation, rats were tested at modified Tarlov scale at 2 days with divided into 4 groups, and motor behavior test (BBB locomotor rating scale, Grid walk test) was examined at 3, 7, 14, and 21 days. For the observation of damage change and size of the organized surface in spinal cord, histopathological studies were performed at 21 days by H & E, and BDNF(brain-derived neutrophic factor) & Trk-b immunohistochemistry studies were performed at 1, 3, 7, 14, 21 days. According to the results, treadmill exercise can play a role in facilitating recovery of locomotion following spinal cord injury. Specially, moderate-intensity treadmill exercise after SCI induction was most improvement in functional recovery and histological change.