• Proceedings of the IEEK Conference
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• 2006.06a
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• pp.809-810
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• 2006

An H.264 algorithm is commonly used for video compression applications. This algorithm requires a large number of data computations, for example, the sum of absolute difference (SAD) operation. We analyzed H.264 reference encoding workloads. The H.264 encoding program has 8.78% SAD operation. The SAD operation is to sum up 16 difference-values in H.264 $4{\times}4$ sub-blocks. In order to accelerate SAD operations, we implemented an application specific instruction-set processor (ASIP) that can execute SAD and data transfer instructions. The proposed coprocessor has an absolute value generator and a carry save adder (CSA) unit to sum up 8 difference-values per one clock cycle. We completed SAD operation in 2 clock cycles. Experimental results show that the performance is improved by 34% of total execution time.

• Journal of Oral Medicine and Pain
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• v.23 no.3
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• pp.271-276
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• 1998

The purpose of the pilot study was to know the relationship between halitosis and oral hygine, to examine the difference of the positon of the straw to be placed in the oral cavity by using Halimeter. Fourteen persons that has good health condition without halitosis were participated in this pilot study. They were treated twice prophylaxis and then they had not tooth brushing during two weeks. After two weeks, they were examied to gingival index, plaque index, VSC valuses. The obtained results were as follosws : 1. No significant difference of VSC values were observed during two weeks withoiut tooth brushing. But significant difference of gingival index, plaque index were observed. It was suggested that halitosis was not caused by only plaque, complex reasons(salivary function, stress etc) maybe caused halitosis. 2. Here were significant reduction of VSC values as the depth of plastic straw into the oral cavity decreased (p<0.05)

• Communications for Statistical Applications and Methods
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• v.27 no.4
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• pp.397-412
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• 2020

In this paper, a notion of data depth is used to propose nonparametric multivariate two sample tests for difference between scale parameters. Data depth can be used to measure the centrality or outlying-ness of the multivariate data point relative to data cloud. A difference in the scale parameters indicates the difference in the depth values of a multivariate data point. By observing this fact on a depth vs depth plot (DD-plot), we propose nonparametric multivariate two sample tests for scale parameters of multivariate distributions. The p-values of these proposed tests are obtained by using Fisher's permutation approach. The power performance of these proposed tests has been reported for few symmetric and skewed multivariate distributions with the existing tests. Illustration with real-life data is also provided.

• Journal of the Korean Society for Industrial and Applied Mathematics
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• v.9 no.2
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• pp.55-64
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• 2005

In this paper, generalized difference methods(GDM) for one-dimensional viscoelastic problems are proposed and analyzed. The new initial values are given in the generalized difference scheme, so we obtain optimal error estimates in $L^p$ and $W^{1,p}(2\;{\leq}\;p\;{\leq}\;{\infty})$ as well as some superconvergence estimates in $W^{1,p}(2\;{\leq}\;p\;{\leq}\;{\infty})$ between the GDM solution and the generalized Ritz-Volterra projection of the exact solution.

• Journal of Biomedical Engineering Research
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• v.5 no.2
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• pp.121-126
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• 1984

A new approach to texture classification for quantitative ultrasound liver diagnosis using run difference matrix was developed. The run difference matrix comprised the gray level difference along with a distances. From this run difference matrix, we defined several vectors and parameters such as DOD, DGD, DAD vector, SHP, SMO, SMG, LDE, LDEL etc.Each parameter values calculated in fatty, cirrhotic, normal and chronic hepatitic liver images were plotted in a plane and we found that RDM method was more sensitive to small structural changes than the conventional run length method and showed improved classification ability between the diseases.

• Journal of Applied and Pure Mathematics
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• v.5 no.5_6
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• pp.281-289
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• 2023

We investigate the value distribution of difference-differential polynomials of entire and meromorphic functions, which can be gazed as the Hayman's Conjecture. And also we study the uniqueness and existence for sharing common value of difference-differential polynomials.

• The Journal of Korean Academy of Prosthodontics
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• v.39 no.2
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• pp.197-207
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• 2001

Development of new ceramics and esthetic needs of patients increase the use of all ceramic restorations. Fractured teeth often need metal post and core as foundation for final restoration. When all ceramic restorations are planned, metal post and core may lead to compromised esthetics because of opacity and gray color of metal post and core. Many techniques have been proposed to solve this problem such as application of an opaque porcelain to the metal core or all ceramic post and core. This study was performed to evaluate effect on color of Empress 2 crown according to various post systems. Color was evaluated by the CIE $L^*a^*b^*$ systems and measured by spectrophotometer (Model CM-3500, Minolta, Japan). Specimens were divided into 4 groups as follows Group 1 : gold cast post specimen + Empress 2 crown specimen Group 2 : application of an opaque porcelain to gold cast post specimen + Empress 2 crown specimen Group 3 : cosmopost specimen + Empress 2 crown specimen Group 4 : In-ceram post specimen + Empress 2 crown specimen. The results obtained as follows, 1. $L^*$ Values showed that group 2, 3, 4 were higher than group 1 with significant difference and group 2, 3, 4 were not significantly different. 2. $a^*$ Values and $b^*$ values also showed that group 2. 3, 4 were higher than group 1 with significant difference and group 2, 3, 4 were not significantly different. 3. ${\Delta}E^* ab$ Values showed that ${\Delta}E^* ab$ 3 was the highest value and ${\Delta}E^* ab$ 5 was the lowest value.

• Korean Journal of Human Ecology
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• v.23 no.1
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• pp.85-99
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• 2014

The purpose of this study was to classify individualism-collectivism orientation into groups and analyze the difference of fashion leadership and expected values of appearance management by the groups. Questionnaires were administered to 376 adults in 20's and 30's living in Deagu and Kyungbook area through June 10~June 20, 2013. Frequency, factor analysis, reliability analysis, cluster analysis, correlation analysis, ANOVA, Duncan-test, t-test, and $X^2$-test were used for data analysis. Survey method was used to collect data for this study and the measures such as individualism-collectivism orientation, fashion leadership and expected values of appearance management consisted of 5-point Likerties scale. Individualism-collectivism orientation was categorized into collectivism, competition consciousness, love of family, and individual focus. Fashion leadership were found as opinion leadership, double leader, and innovator. Expected values of appearance management were found as pleasure/individuality, other consciousness, and conformity. This indicates that women showed high opinion leader, double leader, and innovator of fashion leadership and pleasure/individuality, and conformity of expected values of appearance management while men care more about competition consciousness, love of family, and individuality focus of individualism-collectivism orientation. Individualism-collectivism orientation showed significant correlation with the sub-variable of fashion leadership and expected values of appearance management. Individualism-collectivism orientation were classified into three groups such as competition collectivism, individuality, and low individual-collectivism. A test of significance in groups was determined by demographic variables like gender, age, occupancy and monthly income. Groups showed significant difference in fashion leadership and expected values of appearance management.

• Food Science of Animal Resources
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• v.29 no.3
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• pp.334-339
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• 2009

This study was carried out to determine the effects of olive-oil prepared tomato powder (OPTP) and lycopene on seasoned raw pork. 1.5% OPTP was added in T1 and 3.0% in T2; and 0.03% refining lycopene was added in T3. While in storage, pH values of the treated samples were lower (p<0.05) than those of the control samples. Upon increasing storage, salinity values of OPTP samples increased as well, however, the values of T3 did not change. There were significantly higher TBARS values observed in the OPTP samples compared to control, but no significant difference between T3 and the control samples in TBARS values during storage. VBN values of T2 samples were lower than that of other samples at Day 3 and Day 6 of storage. At Day 9 however, the VBN values of T1 and T2 were significantly higher than those of the control and T3. There was no significant difference between the control and the treated samples in the total plate counts. There were relatively higher redness, yellowness and chromatic values observed in the treated samples than in control. In sensory evaluation, there was no significant difference between the control and the treated samples in color, tenderness, juiciness and overall acceptability.

• Korean Journal of Child Studies
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• v.26 no.6
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• pp.59-71
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• 2005

The purpose of this study was to investigate relationship between parent's supportive parenting and adolescent sexual values. The subjects were 137 adolescents who attended high school in Keoungbok. Statistical techniques were Factor Analysis, Crosstabs, Two-way ANOVA, Scheffe' test, Multiple Regression. The results of this were as follows. First, Adolescents who more perceived supportive parenting from a parent were more likely to consult with parents about one's own sexual problems. Second, There was significant difference in adolescent sexual values by parent's supportive parenting levels or gender. Adolescents who perceived more supportive parenting from parent, or who were boys were more likely to have positive sexual values. But there was no significant interaction effect of supportive parenting level and gender on adolescent sexual values. Finally, The Multiple Regression analysis showed that gender was the stronger predictor of adolescent sexual values than parent's supportive parenting.