• Proceedings of the Korea Contents Association Conference
• /
• 2003.11a
• /
• pp.213-217
• /
• 2003

In this paper, we analysize the noise robustness of MLPs(Multilayer perceptrons). Also, as a preprocessing stage of MLPs to improve noise robustness, we consider the ICA(independent component analysis) and PCA(principle component analysis). After analyzing the noise redunction effect using PCA or ICA, we verify the noise robustness of MLPs through handwritten-digit recognition simulations.

• Journal of Digital Convergence
• /
• v.13 no.6
• /
• pp.39-53
• /
• 2015

The purpose of this study is to consider the effect of the volunteer participation motivation of the elderly on the convergence formation of the social capital. This study is based on the quantitative research of 390 older adults who have participated on the volunteer programs run by welfare center and culture center for the elderly at Incheon area. The results are as follows. First, social responsibility and self-realization (independent variables) have effect on social trust(dependent variable). Second, self-realization(independent variable) has effect on social participation(dependent variable). Third, but social activity(independent variables) have not effect on social trust and social participation(dependent variable). This study can be use to propose policies related to the social activity for the elder's good life.

• The Journal of Information Technology
• /
• v.2 no.2
• /
• pp.51-67
• /
• 1999

This study investigates the effect of information about risk on investment decision making. The model was constructed with two independent variables and two dependant variables. The first independent variable deals with whether information about risk is provided or not. The meaning of information about risk is the degree of uncertainty for investment decision making. The other independent variable involves attitude toward risk, such as the degree of tolerance for risk. Two dependant variables are concerned with the effect on investment decision making, such as the degree of riskiness of decision making and decision confidence, respectively. This study deals with the investment decision in options on stock indices. The findings of this study are as follows. The more the degree of tolerance for risk, the more the degree of decision confidence. This means that risk-taker has more desire for achievement than risk-avoider has. And the message alerting risk of investment decision making takes little effect on investment decision making.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
• /
• v.29 no.6
• /
• pp.365-373
• /
• 2003

Tamoxifen is an selective estrogen receptor antagonist widely used in the management of patients with breast cancer for more than 30 years. It was thought to act primarily through occupying the estrogen receptor sites in ER positive breast cancer cells and directly on cancer cell proper. These inhibitory effects, which have been shown to be independent of the ER, highlight new mechanism of therapeutic action of tamoxifen. The purposes of this study were to identify ER in oral carcinoma cell lines and to evaluate ER independent cytotoxic effect of tamoxifen. KB(SCC), HSC-3(SCC) and A253(ACC) cell line were used and capacity of cell proliferation, apoptosis, in vitro invasion and gelatin zymography were tested. ER expression of each cell line were detected by RT-PCR and immunocytochemistry. Dose dependent inhibition of cell proliferation and inhibition of gelatinolytic activity were observed in all oral carcinoma cell lines and significant difference of apoptotic index were observed in A253 and KB. Tamoxifen inhibited in vitro invasion in all experimental groups. ER expression was detected in KB and A253. These data suggest that tamoxifen may play a role in management of oral carcinoma by independent cytotoxic effect and more advanced research must processed confirming ER-dependent cytotoxicity.

• Journal of the Ergonomics Society of Korea
• /
• v.25 no.4
• /
• pp.115-119
• /
• 2006

To investigate the effects of independent suspension technology(IST) of hiking boot on the stability and load of foot, eight participants performed medial and lateral drop landing from 33.4cm height and 85cm distance to uneven surface while wearing normal & IST hiking boots. For the stability of foot during the drop landing, the balance angle & suspension angle and rearfoot angle was analyzed using high-speed video analysis. Also kinetic analysis using the force plate and insole pressure measurement was conducted to analyze vertical & breaking ground reaction force and pressure distribution. Not only the balance angle & suspension angle but also rearfoot angle was improved with IST boots for lateral drop landing. These results indicate the IST boots may have the suspension function which keeps the foot to be stable during landing. However the IST boots did not show any effect for medial landing. This might be related to the hardness of medial part of outsole. Therefore the softer outsole of medial part could be recommended. Furthermore the impact force & breaking force and insole pressure were reduced with IST boot. These results means that IST boot has not only cushioning effect but also good grip effect. Therefore the hiking boots applied the independent suspension function may help to reduce fatigue and prevent injury such as ankle sprain in hiking on uneven surface.

• Asia pacific journal of information systems
• /
• v.7 no.2
• /
• pp.51-75
• /
• 1997

The purpose of this study is to analyze the effects of strategic roles of IS and characteristics of ISP on the performance of ISP in view of contingency theory. In particular, this study is to find out whether there is a fit between two contingent variables. To evaluate the effects of two independent variables on the dependent variable empirically, a field research method using questionnaires with depth interview was employed. Findings of the field study are as follows: First, the main effect of strategic roles of IS on performance of ISP is found to be significant. This implies that the higher the strategic importance of IS, the better the performance of ISP expected. Second, the effect of characteristics of ISP on the dependent variable is also found to be significant. Organizations which recognize IT as an important competitive weapon for their business, and adopt Technological and Organizational approaches in ISP, have shown to obtain excellent results. Third, the interaction effect of two contingent variables is not found. There is no evidence for a fit between the strategic roles of IS and the characteristics of ISP. This shows that the differences of ISP performance are to be explained by only independent effect of two contingent variables.

• The Research Journal of the Costume Culture
• /
• v.15 no.2 s.67
• /
• pp.311-325
• /
• 2007

The purpose of this study is to investigate the effect of eyeshadow color(brown, purple), lipstick color(red, red purple, and yellow red), and lipstick tone(vivid, light, dull, and dark), clothing style(formal, casual), clothing tone(N9, N7, N4, N2) on image formation. Sets of stimulus and response scales(7 point semantic) were used as experimental materials. The stimuli were 128 color pictures manipulated with the combination of eyeshadow color, lipstick color, lipstick tone, clothing style, and clothing tone using computer simulation. The subjects were 768 female undergraduates living in Gyeongnam-do. Image factor of the stimulus was composed of 5 different components, attractiveness, stability, cuteness, visibility, and tenderness. In the 5 image components, clothing style and clothing tone showed independent effect. In the stability, cuteness and visibility, lipstick color showed independent effect. Eyeshadow color and lipstick tone influenced independently on the attractiveness, stability and visibility. In the coordination of achromatic clothing with makeup face, attractiveness image by the coordination of lipstick tone with clothing tone, cuteness image by the coordination of lipstick tone with clothing style or clothing style with clothing tone, visibility image can be produced by the coordination of eyeshadow color with lipstick color.

• The Journal of Fisheries Business Administration
• /
• v.48 no.2
• /
• pp.1-17
• /
• 2017

This work studies the variability of flatfish sales revenue. The theoretical analysis draws functions for equilibrium price and quantity using expectation hypotheses. The functions include unpredictable phenomenon with dummy variable and GARCH. The equilibrium function, using adaptive expectation hypothesis, contains the independent variables of supply and demand, while the equilibrium function, embodying rational expectation hypothesis, includes only the independent variables of supply side, because the demand side disappears by the information extraction process theoretically, if economic subjects build the expectation rational. The empirical analysis shows: the variability of flatfish production has a spillover effect on the variability of revenue with the adaptive expectation hypothesis. In the case when the model has a rational expectation hypothesis, the variability of flatfish production has a spillover effect on the revenue (the mean equation of GARCH model). This study indicates that there is the variability in flatfish production and sales revenue, and the spillover effect between them. The result can help to build of the rational system for the fishery income stability.

• Journal of the Korean Society of Costume
• /
• v.60 no.6
• /
• pp.37-47
• /
• 2010

The purpose of this study was to investigate the effect of perceiver's gender, interval and color of checked pattern on clothing image. The experimental materials developed for this study were a set of stimulus and response scales. The stimuli were 16 color pictures, in which the perceiver's gender, interval(0.5cm, 1.5cm, 3.5cm, 5.5cm), and color(red, yellow, blue, purple) were manipulated. The 7-point scale was used for evaluation of clothing image. Data were obtained from 192 male college students and 192 female college students living in Seoul, Gwangju, Jinju, and Masan on December 2009. For data analysis, ANOVA and Duncan-test were used by using SPSS program. Results of this study were as follows.; Clothing image according to interval and color of checked pattern consisted of five dimensions of attractiveness, appeal, warmness, modesty, and freshness. Perceiver's gender showed an independent effect on appeal, modesty, and freshness. Interval showed an independent effect on appeal, warmness, modesty, and freshness. Also, interaction effects of Perceiver's gender and interval on appeal and freshness were found. Interaction effects of Perceiver's gender and color on appeal were found.

• The Journal of Asian Finance, Economics and Business
• /
• v.8 no.5
• /
• pp.697-706
• /
• 2021

This quantitative study aims to examine the effect of family ownership on company performance empirically. Specifically, this study examines the moderating effect of corporate governance on the relationship between family ownership and company performance which has never been explored in the previous studies. This study's main target population was all listed companies in the Indonesian Capital Market Directory (ICMD) for 2008-2018. The study used criteria, namely data completeness, to measure research variables and obtained 2996 data or firm-year observations. The research contingency model to test the proposed hypothesis was the General Moment Method (GMM). The study presents the results of data descriptions shows the average, median, maximum, minimum, and standard deviation values for each variable. The descriptive data shows that family ownership is common in Indonesia: 64% of 244 companies in the sample. The inferential analysis results using a multiple regression model test show that family ownership significantly reduces company performance. However, corporate governance proxied by the board of directors, managerial risk profile, and independent commissioners significantly moderate the relationship between family ownership and company performance. Besides, the managerial risk profile and independent commissioners strengthened while the board of commissioners' presence weakened the effect of family ownership on performance.