• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제13권2호
• /
• pp.1080-1099
• /
• 2019

A better tradeoff between robustness and invisibility will be realized by using the just noticeable (JND) model into the quantization-based watermarking scheme. The JND model is usually used to describe the perception characteristics of human visual systems (HVS). According to the research of cognitive science, HVS can adaptively extract the structure features of an image. However, the existing JND models in the watermarking scheme do not consider the structure features. Therefore, a novel JND model is proposed, which includes three aspects: contrast sensitivity function, luminance adaptation, and contrast masking (CM). In this model, the CM effect is modeled by analyzing the direction features and texture complexity, which meets the human visual perception characteristics and matches well with the spread transform dither modulation (STDM) watermarking framework by employing a new method to measure edge intensity. Compared with the other existing JND models, the proposed JND model based on structural regularity is more efficient and applicable in the STDM watermarking scheme. In terms of the experimental results, the proposed scheme performs better than the other watermarking scheme based on the existing JND models.

• 한국식생활문화학회지
• /
• 제17권2호
• /
• pp.131-140
• /
• 2002

This study was performed to assess the effect of eating behaviors and health-related variables on overall dietary quality. Ninety-four(male 21, female 73) elderly who were over 60 residing in middle income areas in Cheongju city participated. Information on general characteristics of the elderly, health-related life style, regularity of meal, meal balance and desirable eating habits were obtained by interview based on questionnare. Dietary nutrient intake data were obtained through the 24 hour recall method. The mean age and BMI of the subjects were 73.3 years old and 23.3(male 21.8 female 23.7) respectively. The proportions of underweight and hypertension were 19.2% and 36.2%. Most nutrients except vitamin $B_2$ and calcium were consumed over 75% of the RDA. The Mean Adequacy of Ratio(MAR) of nutrient intake was 0.64(male 0.72, female 0.62). The average score of regularity of meal, meal balance, and desirable eating habits was 14.4 out of a possible 16, 13.7 out of a possible 24 and 5.5 out of a possible 16 points respectively. Male than female, older subjects than young subjects, and those living with their spouses than with other family or living alone had better scores in eating behaviors. Smoking, chewing ability and eating alone vs eating with company affected overall of regulality of meal and meal balance(p<0.05). Positive correlation (p<0.05) was also dietary quality. There was a positive correlation between the mean adequacy ratio, score observed between scores in regularity of meal and meal balance. Therefore, the elderly should be encouraged to eat a variety of food, maintain good dental health, keep regularity of meal and have meals with company to help improve overall dietary quality and eventually achieve optimal nutritional status.

• Journal of Nutrition and Health
• /
• 제29권5호
• /
• pp.533-546
• /
• 1996

This study was performed to investigate the effect of breakfast regularity on eating habits, nutritional and health status in adult men and women. Also, eating habites and nutritional status expressed as percentage of recommended energy intake in IB(Irregular Breakfast group) were studied. Proportions of IB in men and women was 23.7% and 31.1%, respectively. In men, IB had irregular mealtime, overeating tendency. Also, they consumed high-fat meat and alcohol more frequently than RB (Regular Breakfast group). Total energy intake showed no significant difference between which two groups. Energy intakes from dinner and alcohol were higher in IB than in RB. Nutrient and food intakes were lower in IB than in RB. Percent body fat of IB was higher than that of RB. Weight, triglyceride and prevalence of fatty liver were higher in IB than in RB. In women, IB had irregular mealtime, and overeating tendency. Also, they had more frequent eating out and alcohol consumption. Total energy intake was lower in IB than in RB. In men, nutrient and food intakes were lower in IB than in RB. But health status showed no significant differences between two groups. In men, energy intakes from alchol and dinner were higher in +RDA group(percentage to recommended energy > 125%) than in other groups of IB. But energy intake from carbohydrate was lower in +RDA group. -RDA group (percentage to recommended energy < 75%) had Ca and vitamin A intake less than RDA. In women, +RDA group had overeating tendency. Also, they had more frequent eating out, high-fat meat, and alcohol consumption than other groups of IB. Energy intakes from dinner, snack and fat were higher in +RDA group. But -RDA group had protein and vitamin A intake less than RDA. From our study, it seemed that breakfast irregularity led to undesirable eating habits and had relation with increase of percent body fat. Breakfast regularity seemed to be very important to maintain a nutritional balance.

• Clinical and Experimental Reproductive Medicine
• /
• 제10권1호
• /
• pp.1-6
• /
• 1983

Women were used as their own controls in the comparison of presterilization and poststerilization menstrual patterns. Five parameters were studied: regularity of cycle length, duration and amount of flow and incidence of dysmenorrhea and intermenstrual bleeding. Three parameters in the electrocoagulation group (regularity of cycle length and duration and amount of flow) and one parameter in the tubal ring group (duration of flow) showed significant changes after sterilization. However, by controlling for the effect of previous contraceptive methods used, no significant menstrual pattern changes following sterilization were discerned in either technique group.

• 한국음향학회:학술대회논문집
• /
• 한국음향학회 2002년도 하계학술발표대회 논문집 제21권 1호
• /
• pp.305-308
• /
• 2002

• 디지털융복합연구
• /
• 제11권11호
• /
• pp.705-715
• /
• 2013

본 연구는 유아기질이 유아의 자아존중감, 또래유능감에 어떠한 영향을 미치는 지를 살펴봄으로써 유아의 자아존중감과 또래유능감을 향상시킬 수 있는 방법을 제안하는 데 목적이 있다. 분석을 통해 나타난 연구의 주요 결과는 다음과 같다. 첫째, 유아기질의 적응성, 활동성, 자아존중감의 인지적능력, 동료수용의 경우 어린이집의 평점이 더 높은 것으로 나타났으며, 유아기질의 반응성, 자아존중감의 어머니수용, 동료관계, 또래유능성의 사교성은 유치원의 평점이 더 높은 것으로 조사되었고, 남아의 '생리적규칙성'이 여아에 비해 더 높은 것으로 조사되었다. 둘째, 유아의 연령에 따른 유아기질, 자아존중감, 또래유능성의 차이를 살펴본 결과, 유아기질의 '반응성'의 경우 만 5세가 a그룹으로 만 3세, 만4세가 b그룹으로 나뉘어 차이를 보였으며 '생리적규칙성'의 경우 만3세의 규칙성이 가장 컸으며 만5세의 규칙성이 상대적으로 적어 차이를 보였다. 자아존중감과 또래유능감에서는 만4, 5세가 만3세보다 높은 것으로 확인되어졌다.

• 한국프랜차이즈경영연구
• /
• 제11권4호
• /
• pp.17-29
• /
• 2020

Purpose: As the untact culture has spread due to the recent COVID-19, the service industry as well as the beauty salon is shrinking. In order to overcome such a crisis in beauty salons, the lower dimension of beauty salon service quality is divided into servicescape, technical service, and employee service, and actions are taken with the 'perceived value of the customer' as a parameter. In this study, S-O-R(Stimulus-Organism-Response) theory was applied for customer-centered analysis, and gender and regularity were selected as moderator variables to add practical implications. Research design, data, and methodology: All constructs were measured using items developed and used in the previous study. A total of 261 questionnaires were collected online using NaverForm. The data were analyzed using factor analysis, correlation analysis, and measurement model analysis with SPSS 22.0 and AMOS 22.0. After testing the research model and hypothesis for the entire group, a multi-group analysis was conducted by dividing into male and female groups, regular customers, and non-regular customers. Results: First, this study showed that the service environment of beauty salon customers had a negative (-) effect on perceived utilitarian value, and the technical service and perceived hedonic value had a positive (+) effect on the customer's behavioral intention. Technical service and employee service had a positive (+) effect on perceived hedonic value, but perceived hedonic value did not affect customer's behavioral intention. Second, there is no statistically significant difference in each path between male and female groups. Third, there was a statistically significant difference between regular customers and non-regular customers, only the path that the servicescape influences the perceived hedonic value. Conclusion: According to the results of this study, technical service and utilitarian value should be considered in order to induce behavioral intention of customers, and technical service quality should be considered first. Also, operating a beauty salon requires a differentiated approach to the salon servicescape according to the ratio of non-regular and regular customers. The beauty salon servicescape generally showed negative practical value for non-regular customers, but positive for the Hedinic value for servicescape such as comfortable service and clean interior for regular customers.

• 대한수학회지
• /
• 제52권5호
• /
• pp.891-906
• /
• 2015

In this work we analyze a postprocessing scheme for improving the guaranteed error bound based on the equilibrated fluxes for the P1 conforming FEM. The improved error bound is shown to be asymptotically exact under suitable conditions on the triangulations and the regularity of the true solution. We also present some numerical results to illustrate the effect of the postprocessing scheme.

• 대한수학회지
• /
• 제37권6호
• /
• pp.1071-1084
• /
• 2000

We show that a weak solution of the Cauchy problem for he nonlinear Schrodinger equation, {i∂(sub)t u + ∂$^2$(sub)x u = f(u,u), t∈(-T,T), x∈R, u(0,x) = ø(x).} in the negative solbolev space H(sup)s has a smoothing effect up to real analyticity if the initial data only have a single point singularity such as the Dirac delta measure. It is shown that for H(sup)s (R)(s>-3/4) data satisfying the condition (※Equations, See Full-text) the solution is analytic in both space and time variable. The argument is based on the recent progress on the well-posedness result by Bourgain [2] and Kenig-Ponce-Vega [18] and previous work by Kato-Ogawa [12]. We give an improved new argument in the regularity argument.

• 아동학회지
• /
• 제26권5호
• /
• pp.311-330
• /
• 2005

The purpose of this study was to examine the paternal involvement tendency and its effect on adolescent's self-esteem for boys and girls. Subjects were 607 1st and 2nd grade middle school students in Busan. The data were analyzed by t-test, one-way Anova, Pearson's correlation, and multiple regression analysis. The results were as follows. The scores on paternal involvement were influenced by the amount of time spent with parents, 5days work a week of father, flexibility of leaving work-time of mother, regularity of holiday work of mother as well as adolescents' and fathers' sociodemographic characteristic. For boys, self-esteem was influenced by all sub-scales of paternal involvement : the leisure-life, proffering information, academic support, eveηday life, material support, discipline, and tradition-inheritance. For girls, self-esteem was influenced by leisure-life, proffering information, academic support, everyday life, and material supports.