• Communications for Statistical Applications and Methods
• /
• 제9권2호
• /
• pp.367-379
• /
• 2002

We introduce a new concept of $\theta$ conditionally independent and positive and negative dependence of bivariate stochastic processes and their corresponding hitting times. We have further extended this theory to stronger conditions of dependence similar to those in the literature of positive and negative dependence and developed theorems which relate these conditions. Finally we are given some examples to illustrate these concepts.

• 한국산학기술학회논문지
• /
• 제15권4호
• /
• pp.2235-2243
• /
• 2014

본 연구는 공군병사의 자아탄력성, 정적 정서, 부적 정서가 군 생활 스트레스에 미치는 영향을 파악하기 위해 시도된 서술조사 연구로 공군 병사 321명을 대상으로 실시하였다. 연구결과 대상자의 자아탄력성 평균점수는 3.11점, 정적 정서 평균점수는 3.46점, 부적 정서 평균 점수는 2.26점, 군 생활 스트레스 평균 점수는 1.94점이었다. 자아탄력성과 정적 정서는 유의하게 정적 상관관계를 나타내며, 부적 정서 및 군 생활 스트레스와는 부적 상관관계로 나타났다. 자아탄력성은 군 생활 스트레스에 직접적인 영향을 미치지는 않지만 정적 정서와 부적 정서를 통해 간접적으로 영향을 미치며, 정적 정서와 부적 정서는 군 생활 스트레스에 직접적인 영향을 미치는 것으로 나타났다. 따라서 자아탄력성을 높여주고, 정적 정서 경험을 많이 할 수 있는 프로그램을 개발하여 부적 정서 및 군 생활 스트레스를 감소시킬 필요가 있다.

• 가정과삶의질연구
• /
• 제34권4호
• /
• pp.139-156
• /
• 2016

This study uses S-O-R framework to examine the relationships among consumers' perception of economic benefits, usefulness, privacy risks, switching cost, and emotions and continued intention usage. Results from an online survey of 324 qualified respondents were analyzed using the structural equation model. The results of the survey showed that first, perceived economic benefits and perceived usefulness has a positively effect on consumers' positive emotions. Second, perceived privacy risks have a negative effect on consumers' positive emotions. Third, perceived usefulness has a negative effect on consumers' negative emotions. Fourth, perceived switching cost has a positive effect on consumers' negative emotions. Fifth, consumers' positive and negative emotions have an effect on continuous usage intention. Sixth, consumers' positive and negative emotions have a mediating effect. The S-O-R model can explain consumer's continued intention to use mobile payment services. The study analyzed the emotional elements of mobile payment services. Emotional elements through mobile payment services can be applied to other financial services. Therefore, this study can guide emotional related practices with various future consumer electronic services.

• 아동학회지
• /
• 제28권3호
• /
• pp.187-199
• /
• 2007

The relation of parents' emotion socialization to emotionality in their 5-year-old children was studied in 106 mothers and 105 fathers. They reported on their own family-related emotional expressiveness and on their children's negative emotions by questionnaires; mothers rated children on both positive and negative emotionality. Results showed that mothers expressed positive and negative emotions more frequently, and mothers showed more distress, expressive encouragement, and problem-focused reactions to children's negative emotions than fathers. Mothers' emotional expressiveness was related to children's emotionality, whereas only fathers' negative emotional expressiveness was related to children's negative emotionality. Mothers' distress and punitive reactions were associated with children's positive and negative emotionality. Mothers' problem-focused and emotion-focused and fathers' problem-focused reactions were associated with children's positive emotionality.

• 한국식품영양학회지
• /
• 제24권4호
• /
• pp.670-679
• /
• 2011

This study investigated the hotel buffet restaurant's service quality, emotional reaction of customer, recommendation intention, and defection intention. The survey was conducted from January 3 to February 7 in 2011, and 400 respondents were used in the data analysis. As a results of this study, the hotel buffet restaurant's service quality was classified by the interaction, outcome, and physical environment quality. The emotional reaction of hotel buffet restaurant's customer was classified by the positive and negative emotion. The all factors of hotel buffet restaurant's service quality had a positive impact on positive emotion, while it had a negative impact on negative emotion. The positive emotion reaction of hotel buffet restaurant's customer had a positive impact on the recommendation intention, while the negative emotion had a negative impact on the recommendation intention. And the negative emotion had a positive impact on the defection intention in hotel buffet restaurants. In addition, there were partially differences in the service quality and emotional reaction by general characteristics. There were significant differences in the recommendation intention by marriage status and monthly income. Therefore, the hotel buffet restaurants have to design a strategy of service for increasing customer's positive emotion and recommendation intention.

• 한국프랜차이즈경영연구
• /
• 제12권1호
• /
• pp.45-55
• /
• 2021

Purpose: How to build the positive emotion of customer is very important, because it affects the positive attitude. Brand evidence has a significant impact on consumer behavior in terms of reinforcing consumers' perception of food service companies and differentiating them from competing brands. Thus, this study examines the effect of brand evidence on emotion (positive emotion and negative emotion), and attitude in restaurant industry. Research design, data, and methodology: This study examines the structural relationship among brand evidence, emotion, and attitude. Brand evidence divide into three sub-dimensions such as physical evidence, core service, and employee service. In order to test the purposes of this study, research model and hypotheses were developed. The questionnaire items were modified and used according to the content of this study based on previous studies. All constructs were measured by multiple items tested and developed in the previous research. The data were collected from 439 restaurant users from Seoul area were analyzed using SPSS 22.0 and SmartPLS 3.0 program. A total of 460 questionnaires were distributed and a survey was conducted for 4 weeks, and a total of 439 were used for analysis, excluding non-response data and 21 unusable response data among the collected questionnaires. Frequency analysis was conducted to identify the general characteristics of the survey subjects. To measure the reliability and validity of the measurement tools, confirmatory factor analysis was conducted. Structural model analysis was conducted to verify the research model. Result: The findings demonstrate that physical evidence, core service, employee service had positive effects on positive emotion. And core service and employee service had negative effects on negative emotion while physical evidence did not have. Also, positive emotion had positive effect on attitude and negative emotion had negative effect on attitude. Conclusions: The findings of this study provide guidelines on how to enhance competitiveness in restaurant industry through understanding brand evidence's effects on raising perceived consumer's emotion and attitude. Therefore, food service companies should establish a marketing strategy that can stimulate positive emotions through brand evidence, which is all factors related to service brands that influence consumers' evaluation of service products and purchase decision-making process.

• 센서학회지
• /
• 제28권5호
• /
• pp.329-333
• /
• 2019

Solution-processed oxide thin-film transistors (TFTs) have garnered great attention, owing to their many advantages, such as low-cost, large area available for fabrication, mechanical flexibility, and optical transparency. Negative bias stress (NBS)-induced instability of sol-gel IGZO TFTs is one of the biggest concerns arising in practical applications. Thus, understanding the bias stress effect on the electrical properties of sol-gel IGZO TFTs and proposing an effective recovery method for negative bias stressed TFTs is required. In this study, we investigated the variation of transfer characteristics and the corresponding electrical parameters of sol-gel IGZO TFTs caused by NBS and positive bias recovery (PBR). Furthermore, we proposed an effective PBR method for the recovery of negative bias stressed sol-gel IGZO TFTs. The threshold voltage and field-effect mobility were affected by NBS and PBR, while current on/off ratio and sub-threshold swing were not significantly affected. The transfer characteristic of negative bias stressed IGZO TFTs increased in the positive direction after applying PBR with a negative drain voltage, compared to PBR with a positive drain voltage or a drain voltage of 0 V. These results are expected to contribute to the reduction of recovery time of negative bias stressed sol-gel IGZO TFTs.

• 가정과삶의질연구
• /
• 제26권1호
• /
• pp.1-14
• /
• 2008

The purpose of this study was to investigate compensatory consumption propensity by male and female college students. The subjects of the study were 483 college students in Seoul, and SPSS 12.0 was used for statistical analysis. Two different types of compensatory consumption were considered separately positive compensatory consumption and negative compensatory consumption. The major findings were as follows. First, for male college students, drinking was the most preferable means of compensatory consumption to compensate for both negative and positive emotions. For female college students, their consumption patterns tended to include clothing purchase and eating-out for positive emotions and eating-out, reading and drinking for compensating negative emotions. Second, for both male and female students, the consumption propensity for compensating positive emotion was found to be higher than that for compensating negative emotion. And the consumption propensities for compensating positive and negative emotions were higher for female students when compared to those of male students. According to the results of regression analysis showing the relative effect of each variable to compensatory consumption, sex and consumption tendency were found to be relative variables on both positive and negative compensatory consumptions. Female students were found to be more likely to consume for compensating emotion than male students after other variables were controlled. For positive compensatory consumption, consumption propensity and materialism were found to be the most effective variables, and for negative compensatory consumption, materialism was the most effective variable.

• 지역사회간호학회지
• /
• 제10권2호
• /
• pp.435-454
• /
• 1999

The caregiving experiences of 100 family menbers of outpatients with schizophrenia and schizoaffective disorders were investigated for the presence of positive(positive family-patient relationship. patient' contribution to the family) and negative caregiving experience(objective and subjective burden) and their predictors. This study attempts to make the analysis of caregiving experience more useful by expanding the focus to incoporate these positive aspects of the experience of family caregiver. Objective burden consists of two elements: 'disruption of family life', 'care'(amount of caregiving related to activity of daily living). Subjective burden is defined as emotional reactions to the care giving and it comprised of 6 emotional subdimensions such as 'stigma', 'grief'. 'worry', 'pity', 'fear', 'despair'. Also we investigate the severity of patients' disturbing behaviors into two categories, positive and negative disturbing behaviors and patient' contribution to the family as a predictors of positive and negative caregiving experiences. This study use Pearson's correlation coefficient, Hierardhical regressions in the SAS Program. The results are as follows: 1. Respondents reported moderate level of objective burden 'disruption of family life' (mean = 2.48, range = 1-4), and 'care' (mean=2.54, range = 1-4), and slightly high level of total subjective burden(mean = 2.19, range = 1-4). Mean scores for the measure of the severity of behavioral disturbance indicated that the caregiver experienced negative disturbing behaviors around almost 'somtimes'(mean=2.28, range = 1-4), and positive disturbing behaviors 'almost not frequent'(mean=2.78. range=1-4). So they reported that they perceived patient's negative disturbing behaviors more than positive disturbing behaviors. Mean scores for the measure of the patient' contributions (mean = 1.99. range = 1-4) indicated that caregivers experienced these contributions a little. It means that there should be a positive aspect of possibilities of patient' family roles that can be developed in the daily life. Mean scores for the measure of the positive family-patient relationship indicated that caregivers experienced moderate level of positive family-patient relationship(mean=2.52, range = 1-4). 2. Hierardhical regression analysis 1) Hierardhical regression of 'disruption of family life' showed that the interaction between positive disturbing behaviors and patient' contributions (B = .20. p = .022) and caregiver's educational level(B=.06. p=.000) were 'significant and Hierardhical regression of 'care' showed that 'negative disturbing behaviors'(B= .35. p= .007). 'patient' contributions'(B= .28, p= .019). 'family income'(B=-.l1. p=.096) were significant. 2) Hierardhical regression of 'total subjective burden', 'stigma', 'grief', 'worry', 'pity'. 'fear', 'dispair' showed that 'positive disturbing behaviors'(B=.51. p=.000). 'negative disturbing behaviors' (B = .17, p = .026), 'caregiver's educational level'(B = .03. p=.036), 'family income'(B=.08. p=.041) were significant predictors of 'total subjective burden': 'positive disturbing behaviors'(B=.32. p=.066). 'negative disturbing behaviors'(B=.24, p=.096) 'durations of illness'(B= .03. p= .079) were significant predictors of 'stigma' 'negative disturbing behaviors'(B=.28. p=.005). 'patient sex'(B=-.32. p=.022). 'positive disturbing behaviors'(B=.28. p=.020), 'patient age'(B=.02. p=.010), 'caregiver age'(B=-01, p= .002) were significant predictors of 'grief' 'negative disturbing behaviors'(B= .28, p= .005). 'patient sex'(B= -.32. p=.039), 'caregiver age'(B=-.02, p= .023). 'caregiver's educational level'(B= .04, p = .044) were significant predictors of 'worry' 'patient sex'(B=-.46. p=.005). 'negative disturbing behaviors'(B= .28. p=.018), 'caregiver age'(B=-.01, p=.037) were significant predictors of 'pity' 'positive disturbing behaviors'(B=.83. p=.000). 'patient' contributions' (B = .22, p =.017). 'family income'(B=.09. p=.65) were significant predictors of 'fear' 'positive disturbing behaviors'(B=.49, p=.001). 'negative disturbing behaviors'(B= .24. p=.057) 'patient sex'(B=-.4l, p=.017), 'family income'(B=.14, p=.047) were significant predictors of 'dispair'. 3) Hierardhical regression of 'positive relationship' showed that 'patient contributions'(B=.32, p=.000). 'negative disturbing behaviors'(B= .24, p= .005), 'patient sex'(B=-.23, p=.036).

• 대한수학회보
• /
• 제54권6호
• /
• pp.2149-2154
• /
• 2017

In this paper, we obtain a simple lower bound for the number of positive (resp. negative) crossings in oriented link diagrams in terms of the maximal (resp. minimal) degree of the Jones polynomial.