• 응용통계연구
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• 제25권1호
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• pp.183-196
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• 2012

결측자료(missing data), 절단분포(truncated distribution), 중도절단자료(censored data) 등 불완전한 자료(incomplete data)하의 추론문제(incomplete problems)는 통계학에서 자주 발생되는 현상이다. 이런 문제의 해결방법으로 Expectation Maximization, Monte Carlo Expectation Maximization, Stochastic Expectation Maximization 알고리즘 등을 이용하는 방법이 있지만, 정형화된 분포의 가정이 필요하다는 단점을 가지고 있다. 본 연구에서는 정형화된 분포의 가정이 없는 경우에 사용할 수 있는 Metropolis-Hastings Expectation Maximization(MHEM) 알고리즘을 제안하고자 한다. MHEM 알고리즘의 효율성은 중도절단자료(censored data)를 이용한 모의실험과 KOSPI 200 수익률의 실증자료분석를 통해 알수 있었다.

• 한국산학기술학회논문지
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• 제17권7호
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• pp.245-255
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• 2016

제품이나 서비스에 대한 소비자 만족은 이성적인 관점에서 어느 정도 성과를 창출하였는지와 감정적인 관점에서 어떤 느낌을 제공하는지에 따라 달라진다. 본 연구는 소비자의 이러한 두 가지 차원의 기대를 이성적 기대와 감성적 기대의 독립적인 기대들로 간주하고, 특정 제품이나 서비스에 대한 소비자 만족간의 관계를 확인하였다. 동시에 기존의 기대불일치 이론을 확장한 예언적 기대와 규범적 기대도 함께 고려하여, 소비자의 이성적인 판단과 감정적인 느낌의 기대불일치가 만족에 어떤 영향을 미치는지 연구하였다. 연구 결과, 이성적인 관점에서는 소비자의 기대를 뛰어넘는 성능이나 경험을 했을 경우, 만족은 증가함을 알 수 있었고, 이 효과는 예언적 기대를 충족했을 때 더 커짐을 알 수 있었다. 반면, 감성적인 관점에서는 소비자가 규범적으로 사전에 기대한 느낌보다 더 좋은 느낌을 얻을수록, 만족이 증가하지만, 자신이 실제로 일어날 것이라고 예언한 기대에 불일치하는 것은 오히려 만족을 감소시킨다는 결과를 확인하였다. 하지만 영향정도의 절대 크기 측면에서 감정적인 느낌 하에서는 규범적 기대불일치가 소비자의 만족에 미치는 영향이 예언적 기대불일치의 영향보다 더 크다는 것을 확인하였다.

• Journal of Acupuncture Research
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• 제33권4호
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• pp.33-38
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• 2016

Objectives : To identify potential correlation between patients' expectations and clinical outcome in a randomized control study of acupuncture. Methods : In a clinical trial of acupuncture for hypertension, 60 participants with pre and mild hypertension were randomized into an acupuncture group and a control group. After randomization, all participants were asked to rate their expectation for the intervention on a scale of 0 to 10. To analyze the effect of expectation on clinical outcome, change of blood pressure was compared between high and low expectation groups. Results : There was no significant difference of baseline blood pressure between low expectation group and high expectation group. Proportion of acupuncture group and control group was also not different between low and high expectation groups (p = 0.638). The change of systolic blood pressure was -1.55 mmHg in low expectation group and -3.07 mmHg in high expectation group, and it was not significantly different (p = 0.54). There was no significant difference in the change of diastolic blood pressure between two groups (p = 0.58), with -3.24 mmHg in low expectation group and -2.34 mmHg in high expectation group. Conclusion : In this study, the expectation of intervention (including acupuncture treatment) was not associated with the effect of intervention.

• 대한영양사협회학술지
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• 제7권4호
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• pp.397-409
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• 2001

The purposes of this study were to identify customer expectation, perception and satisfaction of foodservice quality to analyze the influencing factors on foodservice quality and finally to provide basic information for the improvement of foodservice quality. A survey of 4 factory foodservices was undertaken and detailed information was collected from 675 respondents. Statistical data analysis was completed using the SPSS package program for descriptive analysis, t-test and one-way ANOVA. Male had higher scores than female in perceptions of foods and services, and the differences were statistically significant. As analysis of expectation, perception and satisfaction result of age, expectation and perception were statistically significant, and mostly expectation and perception increased according as age increased. Expectation and perception showed statistical differences by marital status. Married people had higher scores in expectation and perception of food and service than single. According to family type, respondents living alone showed lower scores in expectation and perception of food and service than those living with family or relatives. Conversely, living alone had high expectation on service. As analysis of work type, office workers showed higher scores of service expectation, food and service perception than production workers. As education level increased, food and service expectation and perception increased mostly. As analysis of work post, food and service expectation and perception increased as work post raised. Meanwhile, married people had higher scores in service quality of satisfaction than single. Result of the study can be summarized as follows the analysis of expectation, perception and satisfaction of foodservice quality, the Quadrant of food and service quality expectation and perception according to demographic variables. Expectation, perception and satisfaction scores of foodservice attributes according to work type. The distribution of attributes with satisfyingly significant difference in grid.

• 한국산학기술학회논문지
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• 제16권12호
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• pp.8462-8471
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• 2015

소비자 만족은 제품이나 서비스의 판매 등의 기업의 성과에 중요한 영향을 미칠 뿐만 아니라 구전을 일으키고 더 나아가서 고객 충성도를 향상시킨다. 기존의 소비자 만족 연구는 기대불일치 이론을 중심으로 소비자의 기대, 지각된 성능, 이에 따른 기대불일치 정도가 만족에 미치는 영향을 확인하고 있다. 본 연구는 소비자의 기대를 해당 제품이나 서비스의 성능이 "어느 정도는 되어야 한다" 는 규범적 기대와 "어느 정도는 될 것이다" 의 예언적 기대로 구분하여 조절초점 이론에서 제안하는 소비자의 성향 (향상초점 vs. 예방초점) 에 따라 어떤 기대불일치가 만족에 더 큰 영향을 미치는지 확인하고 있다. 구체적으로 향상초점 성향이 강한 소비자는 규범적 기대 불일치보다는 예언적 기대 불일치가 만족에 미치는 영향이 더 크고, 예방초점 성향이 강한 소비자는 예언적 기대 불일치보다는 규범적 기대 불일치가 만족에 미치는 영향이 더 크다는 것이 밝혀졌다. 본 연구는 일반적인 기대 (예언적 기대) 뿐만 아니라 규범적 기대의 중요성을 실증적으로 밝힌 점과 기대불일치 하에서 조절초점의 조절 역할을 밝힌 점에서 이론적인 공헌을 가지며, 고객들의 기대 관리 전략을 수립할 수 있는 가이드를 제공한다는 측면에서 실무적인 시사점을 가진다.

• 한국의류학회지
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• 제16권3호
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• pp.223-232
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• 1992

The ultimate purpose of this study is to build a model on clothing satisfaction which extends the consumer satisfaction model by unifying the exportation antecedents. In the literature study, it is proposed to clarify the concepts on the clothing satisfaction, and to investigate the present paradigms of the consumer satisfaction. It is widely accepted by the clothing researchers that the clothing satisfaction is a comparative process in which the evaluation criteria are used to judge the clothing product and to access the disconfirmation. In the Disconfirmation paradigm, the role of the expectation is very important. We propose to classify the expectation into the expective expectation and the normative expectation. The normative expectation applies when the investment cost and effort are considered. The expectation is shown to be affected by the expectation antecedents of the product characteris-tics, the situation characteristics, and the consumer characteristics. We investigate in detail those clothing satisfaction determinants and their measurement methods. Then, we build a clothing satisfaction model by the disconfirmation paradigm which is composed of the expectation antecedents, the expectation (expective expectation, normative expectation), the perceived clothing product performance, and the disconfirmation.

• 한방재활의학과학회지
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• 제23권3호
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• pp.187-199
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• 2013

Objectives The purpose of this study was to measure the expectation of patients visiting the Korean medical hospital for treatment from traffic accident (TA). Methods The data were collected with a questionnaire for about 1 year. The subjects were 39 patients who hospitalized in Korean Medical Hospital after TA. All data were analyzed using SPSS (Statistical Package for the Social Science) program to analyze. Results Acupuncture (8.36) had the highest expectation degree which was followed by Herbalmedicine (8.32), Pharmocoacupuncture (8.14). There were no significant differences in the expectation degree with sex, age, education, occupation. The patients who had experienced Korean medicine treatment had high expectation degree in Pharmocoacupuncture and Herbalmedicine. And the expectation was different significantly (p<0.05). Conclusions The expectation of TA patients was high in Acupucture and Herbalmedicine. The group experienced korean medical treatment before had high degree of expectation in Palmacoacupuncture and Herbalmedicine.

• 가정과삶의질연구
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• 제17권3호
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• pp.1-16
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• 1999

This study focuses on the beginning of transition to parenthood expectation and applies the exchange theory in order to examine reward and cost of transition to parenthood expectation and picks up the main cause effecting it. This study conducted structured questionnaires to total 330 first pregnant women and examined descriptive statistics and t-test F-test analysis by using collected data. And here are the result of research. First the transition to parenthood expectation expected rewards much more than costs and had much importance on individual aspects in parenthood. The more were they aged hardly educated and housewives the higher did they showed expectation of reward. The less did they have high education the more did they expect costs of the transition to parenthood expectation. Second to examined the reward/cost of transition to parenthood expectation according to martial satisfaction the more did they have martial satisfaction the more did they expectation of the rewa ds on transition to parenthood expectation. On the contrary the more did they respect from husbands the less did they cost of transition to parenthood expectation. This study would be helpful to lead family life having childbirth to the positive way be examining the process from childbirth plan to delivery. Also it will be applicable to seek for the methods to help would-be parents as basic data on material on education about transition to parenthood.

• 지식경영연구
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• 제9권2호
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• pp.129-146
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• 2008

Customers' evaluation of Website with satisfaction is critical in electroniccommerce. Previous research has studied in a distinct approach; especially IT oriented constructs-perceived usefulness, easy of use and marketing oriented constructs-product, shopping experience, service quality. Despite those important previous studies regarding the usage and the purchase of goods and services, how consumers are satisfied and why consumers leave Web sites without purchasing have not been extensively researched. This study explored those determinants of consumer satisfaction with Web site using expectation-disconfirmation theory (EDT). The present paper extends the range of EDT from antecedents of expectation to consequence of satisfaction. The result suggests that experience and familiarity has an impact on expectation as well as perceived performance and satisfaction. Second, higher expectation makes a negative impact on disconfirmation of expectation. Third, positive disconfirmation of expectation makes a positive impact on satisfaction. Forth. satisfaction produces loyalty and repurchasing intention. Finally, loyal customer has stronger intention to repurchase than satisfied customer.

• 대한가정학회지
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• 제48권8호
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• pp.67-76
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• 2010

The major purpose of this study was to explore mediating effects of narcissism on the relationship between paternal maternal psychological control, over-expectation, and adolescent aggression. This study's participants were 678 boys and girls selected from second and third graders at middle schools in Busan. The major findings were as follows. First, there were gender differences in paternal psychological control, fathers' over-expectation, mothers' over-expectation, and adolescents' overt aggression. Second, boys' overt aggression indirectly affected fathers' psychological control and mothers' over-expectation through boys' narcissism. Third, girls' relational aggression indirectly affected fathers' psychological control and mothers' over-expectation through girls' narcissism and directly affected fathers' psychological control. Finally, girls' overt relational aggression indirectly affected fathers' and mothers' over-expectation through girls' narcissism.