• 디지털융복합연구
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• 제16권10호
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• pp.89-99
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• 2018

본 연구의 목적은 기초자치단체 간 사회복지지출의 공간적 자기상관성을 살펴보고, 사회복지지출 규모에 영향을 미치는 요인을 분석하는 데 있다. 본 연구에서는 공간적 자기상관성을 고려한 공간오차모형을 적용하여 복지지출에 영향을 미친 영향요인을 분석하였다. 분석결과 지자체 간 1인당 사회복지지출의 공간적 자기상관성이 나타났다. 그리고 공간회귀분석을 통해 선행연구에서 도출된 각 요인들이 1인당 사회복지지출에 미치는 영향을 살펴보면, 사회 경제적 요인, 행정적 요인 그리고 재정자주도 요인은 지자체 복지지출에 정(+)의 영향을 미치는 것으로 분석되었다. 반면 전년도 복지예산, 정치적 요인, 지방세 등은 복지지출에 영향을 미치지 않은 것으로 나타났다. 본 연구는 기존 선행 연구와는 달리 지자체 간 복지지출의 공간적 자기상관성을 확인하고 영향요인을 살펴본 데 의의가 있다. 본 연구에서는 횡단적 분석만을 실시하였기에, 향후에는 다년도 사회복지지출 자료를 활용한 시계열 분석이 이루어질 필요성이 있다.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2013년도 춘계학술대회
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• pp.521-524
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• 2013

본 논문에서는 개선된 고차상관 특징계수 통해서 얻어진 특징 정보를 제스처 심볼로 구성하여 인식하는 알고리즘에 대해 기술한다. 제안된 방법은 기존의 기하학적인 특징 기반 방법이나 외관기반 방법의 비해 많은 계산 량이 요구 되지 않고 최소한의 정보를 사용하고도 높은 인식률을 유지 할 수 있기에 실시간 시스템 구축에 매우 적합하다.

• 한국컴퓨터정보학회논문지
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• 제22권7호
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• pp.47-54
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• 2017

Recently, correlation filter based trackers have shown excellent tracking performance and computational efficiency. In order to enhance tracking performance in the correlation filter based tracker, search area which is image patch for finding target must include target. In this paper, two methods to discriminatively represent target in the search area are proposed. Firstly, search area location is estimated using pyramidal Lucas-Kanade algorithm. By estimating search area location before filtering, fast motion target can be included in the search area. Secondly, we investigate multi-channel Local Edge Pattern(LEP) which is insensitive to illumination and noise variation. Qualitative and quantitative experiments are performed with eight dataset, which includes ground truth. In comparison with method without search area estimation, our approach retain tracking for the fast motion target. Additionally, the proposed multi-channel LEP improves discriminative performance compare to existing features.

• 대한기계학회논문집A
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• 제33권8호
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• pp.813-818
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• 2009

Design analysis and computer experiments (DACE) model is widely used to express efficiently nonlinear responses in the field of engineering design. As a DACE model, kriging model can approximately replace a simulation model that is very expensive or highly nonlinear. The kriging model is composed of the summation of a global model and a local model representing deviation from the global model. The local model is determined by correlation coefficient with the pre-sampled points, where the accuracy and robustness of the kriging model depends on the selection of proper correlation coefficients. Therefore, to achieve the robust kriging model, the range of the correlation coefficients is explored with respect to the degrees of the global model. Based on this study we propose the proper orders of the global model and range of parameters to make accurate and robust kriging model.

• 근관절건강학회지
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• 제22권2호
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• pp.96-104
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• 2015

Purpose: The purpose of this study was to identify the relationship between intraoperative level of caring and anxiety among patients who underwent spinal surgery under local anesthesia. Methods: The study participants included 162 patients who had spinal surgery under local anesthesia at a general hospital in B metropolitan city between July 20 and September 20, 2014. To measure the caring behaviors of patients under local anesthesia, we used the Caring Behavior Measurement, and state anxiety was measured by the State Trait Anxiety Inventory. The collected data were analyzed using a SAS program. The differences in anxiety levels based on participants' characteristics were analyzed with t-test and an analysis of variance. The correlation between levels of caring and anxiety was tested with Pearson's correlation coefficient. Results: Education and caring levels showed significant relationship with the anxiety level of patients with spinal surgery under local anesthesia. Conclusion: To decrease the level of anxiety in patients undergoing spinal surgery under local anesthesia, it is necessary to educate and train operating nurses about the intra-operative caring behavior.

• 보건행정학회지
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• 제23권1호
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• pp.59-65
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• 2013

Background: The purpose of this study was to analyze the related factors which decide the percentage of health care expenditure of the total fiscal expenditure of local governments and to provide the basic data to contribute for the efficient allotment of healthcare budget. Methods: This study was conducted by the percentage of health care expenditure for 3 years by classifying a total of 230 local governments into the metropolitan cities (gu, 69), the counties (si, 75), and the boroughs (gun, 86) all over the country. With the collected data, the general characteristics of independent variables and the dependent variable were analysed using SPSS ver. 18.0, The correlation analysis and multivariate regression analysis were conducted for the characteristics of variables according to regions by year. Results: In correlation between health care expenditure by year and other variables, there was a significant positive correlation with unemployment rate, metropolitan cities (gu) and other regions, the percentage of health center personnel, health care expenditure in last year as a independent factors. On the other hand there was no correlation with social assistance recipients and the percentage of aging population, financial self-reliance, industrialization rate, suicide rate, cardiac disease mortality, cerebrovascular mortality on health care expenditure. Conclusion: The study clearly shows that health care expenditure of local governance was not correlated with health care need factors comparing social welfare expenditure.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제11권10호
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• pp.4929-4947
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• 2017

In visual object tracking, Correlation Filter-based Tracking (CFT) systems have arouse recently to be the most accurate and efficient methods. The CFT's circularly shifts the larger search window to find most likely position of the target. The need of larger search window to cover both background and object make an algorithm sensitive to the background and the target occlusions. Further, the use of fixed-sized windows for training makes them incapable to handle scale variations during tracking. To address these problems, we propose two layer target representation in which both global and local appearances of the target is considered. Multiple local patches in the local layer provide robustness to the background changes and the target occlusion. The target representation is enhanced by employing additional reversed RGB channels to prevent the loss of black objects in background during tracking. The final target position is obtained by the adaptive weighted average of confidence maps from global and local layers. Furthermore, the target scale variation in tracking is handled by the statistical model, which is governed by adaptive constraints to ensure reliability and accuracy in scale estimation. The proposed structural enhancement is tested on VTBv1.0 benchmark for its accuracy and robustness.

• Nuclear Engineering and Technology
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• 제33권3호
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• pp.283-297
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• 2001

The CHF in PWR rod bundles is usually predicted by the local flow correlation approach based on subchannel analysis while difficulty exists due to the existence of spacer grids especially with mixing vanes. In order to evaluate the effect of spacer grids on CHF, the experimental rod bundle data with various types of spacer grids were analyzed using the subchannel code, COBRA-IV-i. For the Plain grid data, a CHF correlation was described as a function of local flow conditions and heated length, and then the residuals of the CHF in mixing vaned grids predicted by the correlation were examined in various kinds of grids. In order to compensate for the residual, three parameters, distances between grids and from the last grids to the CHF site, and equivalent hydraulic diameter were introduced into a grid parameter function representing the remaining effect of spacer grids predicted most of the CHF data points in plaing grids within $\pm$20 percent error band. Good agreement with the CHF data was also shown when the grid parameter function for mixing vaned grids of a specific design was used to compensate for the residuals of the CHF data predicted by the correlation.

• 로봇학회논문지
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• 제1권1호
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• pp.9-16
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• 2006

The Mobile robots are increasingly being used to perform tasks in unknown environments. The potential of robots to undertake such tasks lies in their ability to intelligently and efficiently search in an environment. An algorithm has been developed for robots which explore the environment to measure the physical properties (dust in this paper). While the robot is moving, it measures the amount of dust and registers the value in the corresponding grid cell. The robot moves from local maximum to local minimum, then to another local maximum, and repeats. To reach the local maximum or minimum, simple gradient following is used. Robust estimation of the gradient using perturbation/correlation, which is very effective when analytical solution is not available, is described. By introducing the probability of each grid cell, and considering the probability distribution, the robot doesn't have to visit all the grid cells in the environment still providing fast and efficient sensing. The extended algorithm to coordinate multiple robots is presented with simulation results.

• Journal of Mechanical Science and Technology
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• 제18권7호
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• pp.1258-1266
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• 2004

It is important to completely understand heat/mass transfer from a flat plate because it is a basic element of heat/mass transfer. In the present study, local heat/mass transfer coefficient is obtained for two flow conditions to investigate the effect of boundary layer using the naphthalene sublimation technique. Obtained local heat/mass transfer coefficient is converted to dimensionless parameters such as Sherwood number, Stanton number and Colburn j-factor. These also are compared with correlations of laminar and turbulent heat/mass transfer from a flat plate. According to experimental results, local Sherwood number and local Stanton number are in much better agreement with the correlation of turbulent region rather than laminar region, which means analogy between heat/mass transfer and momentum transfer is more suitable for turbulent boundary layer. But average Sherwood number and average Colburn j-factor representing analogy between heat/mass transfer and momentum transfer are consistent with the correlation of laminar boundary layer as well as turbulent boundary layer.