• 제어로봇시스템학회:학술대회논문집
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• 2000.10a
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• pp.401-401
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• 2000

A mobile manipulator-a serial connection of a mobile robot and a task robot is redundant by itself. Using its redundant freedom, a mobile manipulator can move in various modes, and perform dexterous tasks. An interesting question,

• Journal of the Korean Institute of Telematics and Electronics S
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• v.35S no.7
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• pp.62-71
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• 1998

In this paper, we describe the object-oriented motioncompensation technique using the hierarchical grid interpolation(HGI). By noting that the HGI does not exploit effetively the rate-distortion (R-D) trade-off inherent in the quadtree decomposition, we propose an objectoriented HGI technique employing the greedy method. In the proposed technique, input image is decomposed in a quadtree basis using the greedy method, yielding maximum split gain in the R-D sense. Then, the motion compensation is performed using the HGI technique. The performance of the proposed technique is examined in simulation, and it will be show that the proposed technique provides better performance than the conventional object-oriented motion compensation techniques.

• Women's Health Nursing
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• v.12 no.1
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• pp.47-52
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• 2006

Purpose: This study was undertaken to test effects of action oriented BSE education on knowledge, selfefficacy, and performance competence in nursing students. Methods: A non-equivalent pre-posttest of time serial quasi-experimental design was used to prevent diffusion of the experiment. Out of 53 nursing students selected by convenient sampling in the third grade at a nursing college, 27 students were randomly assigned to the control group and were first given a traditional lecture on BSE. For the experimental group of 26 students action oriented BSE education consisted of lectures, demonstrations with breast models, and BSE skill practice by micro teaching. Results: There was no significant difference in general and BSE-related characteristics between the two groups. Scores of the experimental group in knowledge, self-efficacy, and performance after the intervention were significantly higher than those of the control group. Conclusions: Results showed that action- oriented BSE education was effective in increasing knowledge, self-efficacy and performance competence in nursing students. Education for students should incorporate strategies reinforcing confidence by practicing actual BSE skills as well as acquiring knowledge of BSE, so that students can become competent and practical cancer prevention educators.

• Journal of Digital Convergence
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• v.18 no.8
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• pp.119-131
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• 2020

The purpose of this study is to examine the mediated effects of entrepreneurship and market orientation on organizational culture and management performance as the cause of the reversal phenomenon of startups defeating traditional giants. Through the research method of bootstrapping proposed by Hayes (2013), the total effect, direct effect and indirect effect analysis were conducted. As a result, there was no direct impact relationship between organizational culture and management performance, but it was confirmed that it had a positive impact on management performance by mediating both entrepreneurial behavior and market orientation in the relationship between organizational culture and management performance. This study is meaningful in that it is linked to existing theories such as entrepreneurship and market orientation and it extends the scope of competency targets required for business performance to an organizational culture. Companies need to create an innovation-oriented organizational culture for management performance and value creation, and they have to open up their culture with entrepreneurial behavior and market orientation by breaking away from the inertia of organization.

• Journal of Information Technology Services
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• v.12 no.2
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• pp.195-214
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• 2013

The purpose of this study is to verify the mediating effect of interaction among learners in a Web Based Collaboration Learning (WBCL) environment. 254 Korean college students served as test subjects and during the 4 weeks of research period, they studied the Test of English for International Communication (TOEIC) in a web-based collaborative learning system. The interaction between learners was looked into by categorizing the concept into task oriented information sharing activities and relationship oriented communication activities and analyzing the causal relationship between the two activities. Learning performances were measured in individual level. The results are as follows. First, task oriented information sharing activities effect positively on relationship oriented information sharing activities. Second, the managerial characteristics of WBCL had a positive effect on interaction between learners but the systematic characteristics had partial influence on interaction between learners. Third, the interaction between learners completely interconnects the managerial characteristics of WBCL and learning performance but partially interconnects the systematic characteristic of WBCL and learning performance. In conclusion, this study implies that managerial and systematic characteristics of WBCL should be considered on the preferential basis for the WBCL to become successful and interactive activities such as information sharing and communication should be encouraged to be active from a small-size WBCL perspective.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.10 no.4
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• pp.1807-1823
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• 2016

Local Binary Pattern (LBP) and its variants have powerful discriminative capabilities but most of them just consider each LBP code independently. In this paper, we propose sub oriented histograms of LBP for smoke detection and image classification. We first extract LBP codes from an image, compute the gradient of LBP codes, and then calculate sub oriented histograms to capture spatial relations of LBP codes. Since an LBP code is just a label without any numerical meaning, we use Hamming distance to estimate the gradient of LBP codes instead of Euclidean distance. We propose to use two coordinates systems to compute two orientations, which are quantized into discrete bins. For each pair of the two discrete orientations, we generate a sub LBP code map from the original LBP code map, and compute sub oriented histograms for all sub LBP code maps. Finally, all the sub oriented histograms are concatenated together to form a robust feature vector, which is input into SVM for training and classifying. Experiments show that our approach not only has better performance than existing methods in smoke detection, but also has good performance in texture classification.

• Korean Journal of Social Welfare Studies
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• v.45 no.3
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• pp.179-207
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• 2014

The purpose of this study was to investigate the effects of the performance-oriented culture of a community welfare center on the job performance of its social workers. For that purpose, the study conducted a survey by mail with 1,162 social workers working for community welfare centers around Busan and Gyeongnam Province from January 4 to 31, 2013. Of the collected questionnaires, a total of 755 from 81 community welfare centers were used in the final analysis. This study used the SPSS 21.0, AMOS 21.0, and HLM 6.02 statistical software packages to perform data analysis for each hypothesis. The analysis results of the unconditional model of the hierarchical linear model, the unconditional random coefficient model, and the conditional model show that the job satisfaction and organizational commitment of social workers had positive (+) effects on their job performance. Secondly, customer orientation, one of the sub-elements of performance-oriented culture, had positive (+) effects on the job performance of social workers, whereas the result orientation had negative (-) effects on it. In addition, innovation orientation had no impacts on their job performance. Based on those findings, the study proposed management plans for organizational culture to enhance the job performance of social workers.

• Journal of the Korean Society of Physical Medicine
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• v.6 no.4
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• pp.447-454
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• 2011

Purpose : The purpose of this study was to identify the effects of circuit class training on the performance of locomotor tasks in chronic stroke. Methods : The study included 45 patients with chronic stroke randomly divided into experimetal group and control group. Both groups participated in exercise classes three times a week for 8weeks. The experimental group had 10 workstation of circuit class designed to improve walking. The control group practiced fitness exercises by equipment in health center. Walking performance was assessed by measuring walking speed(timed 10-meter walk and TUG), GAITRite analysis and peak vertical ground reaction force through the affected foot during walking. Results : The experimental group demonstrated significant improvement(p<.05) compared with the control group in 10-meter walking and vertical ground reaction force after training. The experimental group showed significant improvements in the walking velocity and cadence by GAITRite system(p<.05). Conclusion : Task- oriented circuit class training leads to improvements in locomotor function in chronic stroke. Further studies are necessary to occur in usual environments to improve walking performance.

• Physical Therapy Korea
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• v.22 no.4
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• pp.27-33
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• 2015

The purpose of this study was to find which spatiotemporal gait parameters gained from stroke patients could be predictive factors for the gait part of Tinetti Performance-Oriented Mobility Assessment (POMA-G). Two hundred forty-six stroke patients were recruited for this study. They participated in two assessments, the POMA-G and computerized spatiotemporal gait analysis. To analyze the relationship between the POMA-G and spatiotemporal parameters, we used Pearson's correlation coefficients. In addition, multiple linear regression analyses (stepwise method) were used to predict the spatiotemporal gait parameters that correlated most with the POMA-G. The results show that the gait velocity (r=.67, p<.01), cadence (r=.66, p<.01), step length of the affected side (r=.49, p<.01), step length of the non-affected side (r=.53, p<.01), swing percentage of the non-affected side (r=.47, p<.01), and single support percentage of the affected side (r=.53, p<.01) as well as the double support percentage of the non-affected side (r=-.42, p<.01) and the step-length asymmetry (r=-.64, p<.01) correlated with POMA-G. The gait velocity, step-length asymmetry, cadence, and single support percentage of the affected side explained 67%, 2%, 2%, and 1% of the variance in the POMA-G, respectively. In conclusion, gait velocity would be the most predictive factor for the POMA-G.

• Journal of Korea Society of Industrial Information Systems
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• v.16 no.4
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• pp.127-137
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• 2011

This studies shows that Balanced Score-Card(BSC) affects corporate performance and performance measurement systems affect corporate performance, depending on whether they are customer-oriented or finance-oriented. The results of the study are as followings; First, utilization of BSC are significant relationships with performance assessment system. Second, performance assessment system are significant relationships with corporate performance. Third, utilization of Balanced Score-Card(BSC) affects corporate performance.