• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.10 no.4
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• pp.279-287
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• 2017

The aim of this study is to verify the difference in the level of happiness and preparation for old age according to the general characteristics of senior welfare center attendees. The subjects of the study were 148 attendees of OO senior welfare center in Seoul and a survey was conducted from July 4 to October 7, 2016. The method of analysis was by using the SPSSWIN 18.0 program, a 5% level of significance was verified in a frequency analysis, t-test, one-way ANOVA, correlation analysis, and multiple regression analysis. The results showed that first, from investigating the difference in the level of preparation for old age according to general characteristics, there was a significant difference according to age, occupation, monthly income, and physical condition but there was no significant difference according to gender and level of education. Second, as a result of observing the difference in the level of happiness according to general characteristics, although there was a significant difference according to occupation and monthly income, the difference level according to gender, age, level of education, health condition was less than a 5% level of significance. Third, from observing the correlation between the level of happiness and preparation of old age, it was found that happiness was positively correlated to preparation for old age in the following order: physical preparation for old age ((r=.576, p<.001), economic preparation for old age (r=.570, p<.001), psychological preparation for old age (r=.526, p<.001), social preparation for old age (r=.525, p<.001). It is forecasted that this study will be used as base line data for improvement of happiness and preparation for old age for the elderly according to general characteristics.

• Speech Sciences
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• v.15 no.3
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• pp.7-15
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• 2008

This paper proposes the method to extract new feature vectors using the difference between the cepstrum for static characteristics and delta cepstrum for dynamic characteristics in speaker recognition (SR). The difference vector (DV) which it proposes from this paper is containing the static and the dynamic characteristics simultaneously at the intermediate characteristic vector which uses the deference between the static and the dynamic characteristics and as the characteristic vector which is new there is a possibility of doing. Compared to the conventional method, the proposed method can achieve new feature vector without increasing of new parameter, but only need the calculation process for the difference between the cepstrum and delta cepstrum. Experimental results show that the proposed method has a good performance more than 2.03%, on average, compared with conventional method in speaker identification (SI).

• Speech Sciences
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• v.14 no.3
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• pp.47-57
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• 2007

The aim of this study was to investigate the pitch and formant characteristics of vowels produced by monolingual and bilingual children. We collected sustained phonation of single vowels, /a/, /i/, /u/, from children aged 6 through 10 and compared their acoustic characteristics, fo, F1, F2. Results showed a significant difference between the groups in fo and F1 in the sustained phonation /a/, but not in F2. In the sustained phonation /i/, F2 revealed a significant difference but fo and F1 showed no significant difference. The F2 showed a significant difference in the sustained phonation /u/, but fo and F1 revealed no significant difference between the groups. It is needed to study further on the acoustic characteristics of bilingual children so that we can make a proper language intervention strategy for them.

• The Research Journal of the Costume Culture
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• v.31 no.1
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• pp.1-17
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• 2023

This study analyzed requirements for medical masks and difference in satisfaction based on demographic characteristics and side effects experience caused by wearing medical masks. Three factors related to requirements for medical masks were identified: wearing comfort and usability, blocking function for harmfulness, and design. As a result of the difference analysis for requirements of medical masks based on demographic characteristics, all three factors showed a significant difference in gender and occupation. Design did in age and monthly income. As a result of the presence or absence of breathing difficulties experience, design factor was significant. As a result of the presence or absence of skin trouble experience, wearing comfort and usability showed a significant difference. As a result of the difference in satisfaction with medical masks based on demographic characteristics and side effect experience caused by wearing medical masks, breathing, ear string tightness, blocking harmful substances, price, and over all wearing comfort showed a significant difference by gender, marital status, age, occupation, and monthly income, and the presence of absence of breathing difficulty experience and skin trouble experience, respectively. As a result of the interaction effect analysis between demographic characteristics and side effects experience caused by wearing medical masks, it showed a significant interaction effect between gender and monthly income, between marital status and monthly income, between monthly income and breathing difficulties experience, and between monthly income and skin trouble experience.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.33 no.9
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• pp.66-72
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• 2005

As one of the methods that determine position using GPS carrier phase without the resolution of integer ambiguity, the characteristics of the time difference is analyzed in this paper. When determining position by the needed accuracy, the difference time gap becomes an important factor. It is said that accuracy is improved as the difference time gap is getting large, and finally the centimeter level accuracy is achieved after a certain difference time gap. In this paper, the characteristics of the time difference is analyzed using real data and a new parameter is proposed to predict the resulting position accuracy. The difference time gap when position error is converged to the centimeter level is estimated with the proposed parameter.

• Journal of the Korean Institute of Telematics and Electronics
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• v.22 no.3
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• pp.23-30
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• 1985

When a digital filter implementation is based on a difference equation, the frequency characteristics cannot be obtained by direct computation, but be obtained by experiment or analogized by Z-transform. In this paper, the method to compute the frequency magnitude response of the function expressed in a difference equation is derived from PARSEVAL's relation. To verify the validity of this new method two types of digital filters are implemented. Both filters' characteristics are measured and their values are compared with the value obtained by a Z-transform and with the value by a difference equation. The result shows that the measured values and the values obtained by the difference equaton are more closer than the values by a Z-transform. And the difference-equaton-based filters' showed sharper roll off characteristics than the Z-transform-based filters. Therefore when a digital filter implementation is based on a difference equation, the characteristics computation by a difference equation predicts better practical results than based on Z-transform.

• Culinary science and hospitality research
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• v.14 no.4
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• pp.119-133
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• 2008

This study researched the effect of initial expenses for food service business and shop characteristics on the motive of starting business through questionnaires(from April to May, 2008). The results are as follows. First, for the hypothesis, 'the motive of starting business depends on its initial expenses', the significance probability of good commercial area was .015 and that of retirement was .020, showing statistically significant difference. F values were 2,889 and 2.734 each, which showed significant difference by 0.001. Second, for the hypothesis, 'the motive of starting business depends on shop characteristics', the significance probability of the accomplishment desire, the future stability and the retirement were .011, .009, and .025 each, showing statistically significant difference. F values were 2,616, 3.034 and 3.177 each, showing significant difference by .001. Lastly, initial expenses for business and shop characteristics showed significant difference according to the demographical variables on the motive of starting business. This study shows the problem of starting business with no extra funds. It is important to reflect the opinions of founders about the commercial building lease protection law for them to concentrate on business. The founders should research for menu and systems and be aware of the tendency of the industry for sure.

• Journal of Korean Academy of Nursing Administration
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• v.9 no.4
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• pp.625-639
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• 2003

Purpose: The Purpose of this study was to identify the relationship between managerial characteristics of the nursing organization and organizational effectiveness. Method : The data were gathered from the self-reported questionnaires of 717 nurses who work for eight different general hospitals located around Seoul and Kyounggi province. The period of data collection was from December 12 to December 7, 2002. For data analysis, descriptive statistics, Pearson correlation coefficient, t-test, and ANOVA with SAS & SPSS Program were used. Result : 1) Managerial Characteristics of the Nursing Organization were positively related to all of the organizational effectiveness. Transactional leadership were negatively related to all of the organizational effectiveness. 2) 'Shared Value' and 'Communication' showed a significant difference except religion. 'Autonomy' showed a significant difference except religion, major field of practice. 'Job Motivation' showed a significant difference except marital status, religion. 'Transformational leadership' showed a significant difference except marital status, religion, major field of practice. 3) 'Job satisfaction' showed a significant difference except religion, major field of practice. 'Organizational commitment' and 'Organizational citizenship behavior' showed a significant difference except religion. Conclusion : From the above results, the highly perceived with managerial characteristics of the nursing organization is very implicative to enhance the organizational effectiveness.

• The Korean Fashion and Textile Research Journal
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• v.12 no.1
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• pp.46-59
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• 2010

This study is a survey research for adult men in their from 20's to 50's. The purpose of this study is to find out that demographic characteristic, material knowledge, and purchase price have what effect on the selection behavior and the post-purchase satisfaction. The results are as follows. The purchase place according to demographic characteristic showed the significant difference in ages, monthly income, and occupation. The purchase amount per a dress suit and the having quantity of dress suits showed the significant difference according to all demographic characteristics. The importance of an selective criteria in case of selecting dress suits showed the partly significant difference according to demographic characteristics. The post-purchase satisfaction showed the no significant difference according to demographic characteristics, but showed the significant difference according to the knowledge degree for materials and purchase amounts. The interaction effect among demographic characteristics, the degree of knowledge for materials, and the purchase amount showed frequently the significant difference between two variables. The factor which have most greatly an effect on post-purchase satisfaction of menswear was the degree of knowledge for materials.

• Korean Institute of Interior Design Journal
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• v.22 no.1
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• pp.174-182
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• 2013

This study divided the observation area in an indoor space for area setup to analyse the effect of the difference of design types on the characteristics of observation with the observed time of each area as objects. Though it is thought that the difference of design patterns may be influenced by the factors and material composing the space, no existing approaches have had any quantitatively measuring method. Eye-tracking could be efficiently utilized for observation analysis from the viewpoint of dating observation behavior. The followings are the results of analysing the observation characteristics depending on design pattern. First, 5 observing areas were set up according to concentration of observation time in order for the concentration by area to be examined and the factors of design having effect on the difference of observation patterns by design type could be analysed. Second, as a whole, the observation of modern types showed high observation characteristics. When the difference of observation characteristics by pattern was examined by difference at observation frequency, the observation frequency defined to be more than 50% was seen to be almost same from Area I to III and to get higher from Area IV, and that defined to be 30% was high at Areas III and IV. In Area V, it was very high at natural. Third, that of Area II is no more than 8.2% but had the most observation time. As for observation characteristics, the horizontal observation of the central part was the highest and had more observation frequency at modern type that at natural one. These observation characteristics by area enabled to analyse the observation tendency depending on design characters at relevant area. Fourth, the design factors composing natural type were found to bring more attention when the area showed higher concentration at natural type than at modern one. And the analysis of design factors could make it to be confirmed that the quality of material and background factors in addition to design factors in the area had more effect on sight concentration.