• ETRI Journal
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• 제35권6호
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• pp.1084-1093
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• 2013

problem of pedestrian localization using mobile nodes containing impulse radio ultra wideband (IR-UWB) is considered. IEEE 802.15.4a-based IR-UWB can achieve accurate ranging. However, the coverage is as short as 30 m, owing to the restricted transmit power. This factor may cause a poor geometric relationship among the mobile nodes and anchor nodes in certain environments. To localize a group of pedestrians accurately, an enhanced cooperative localization method is proposed. We describe a sequential algorithm and define problems that may occur in the implementation of the algorithm. To solve these problems, a batch algorithm is proposed. The batch algorithm can be carried out after performing the sequential algorithm to linearize the nonlinear range equation. When a sequential algorithm cannot be performed due to a poor geometric relationship among nodes, a batch algorithm can be carried out directly. Herein, Monte Carlo simulations are presented to illustrate the proposed method and verify its performance.

• Human Ecology Research
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• 제62권1호
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• pp.165-179
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• 2024

This study examined the effects of perceived discrimination on multicultural adolescents regarding feelings of This study examined the direct effect of socially prescribed perfectionism on interpersonal anxiety in upper elementary school students and the sequential mediating effect of dichotomous thinking and rejection sensitivity on this relationship. The sample comprised 306 upper elementary school students (grades 4 to 6; 149 boys, 48.7%) in Seoul, Incheon, and Busan. The Data were collected through an online self-report questionnaire completed by the participants and analyzed using SPSS version 27.0 and MPlus version 8.7 software. The analyses revealed three key findings. First the direct effect of socially prescribed perfectionism on interpersonal anxiety was not statistically significant. Second dichotomous thinking mediated the relationship between socially prescribed perfectionism and interpersonal anxiety, whereas rejection sensitivity did not. Finally, socially prescribed perfectionism influenced interpersonal anxiety through the sequential mediation of dichotomous thinking and rejection sensitivity. In conclusion, although socially prescribed perfectionism does not directly influence interpersonal anxiety, children may experience interpersonal anxiety in situations involving dichotomous thinking due to socially prescribed perfectionism, leading to rejection sensitivity. These findings suggest that interventions for interpersonal anxiety in upper elementary school students should focus on psychological problems attributed to socially prescribed perfectionism.

• 한국보육지원학회지
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• 제19권2호
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• pp.1-20
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• 2023

Objective: The present study aimed to investigate the sequential mediation effects of creative home environment and preschoolers' playfulness on the relationship between mothers' play beliefs and preschoolers' happiness. Methods: The subjects of this study were 233 preschoolers between the ages of 3 and 5 and their mothers. Mothers were asked to complete a questionnaire that assessed their beliefs about play, the creative home environment they provided, as well as their child's playfulness and happiness. The data collected were analyzed using the SPSS Process Macro program to investigate the sequential mediating effects. Results: The study found that the mothers' play support beliefs were directly associated with their preschoolers' happiness. Additionally, the creative home environment was found to mediate the relationship between the mother's play beliefs and their preschooler's happiness. The children's playfulness was also identified as a mediator in the relationship between the mother's play beliefs and their preschooler's happiness. Furthermore, the findings of this study indicated that the relationship between the mother's play beliefs and preschoolers' happiness was sequentially mediated by the creative home environment and preschoolers' playfulness. Conclusion/Implications: Findings of this study provide insights into the potential development of a parent education program aimed at modifying mothers' play beliefs and the home environment.

• 한국실내디자인학회:학술대회논문집
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• 한국실내디자인학회 2004년도 춘계학술발표대회 논문집
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• pp.86-90
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• 2004

The whole image of circulation occupied with user has duplicated inter-relationship. It means many situation exist simultaneously, and the character of space factors are completed by the inter-relationship of the detailed structure. The purpose of this study is on the proper notation for circulation analysis of the sequential space structure which is constructed by the formal constituent and the change of visual circumstance influence on the action of user. This study investigate the possibility of notation by arranging the analysis method of the visual space and focusing on the research for the visual perception behaviour of user being applied various space, and the possibility of application as a method of space design.

• 한국학교보건학회지
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• 제36권1호
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• pp.1-8
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• 2023

Purpose: The purpose of the study was to identify the sequential mediating effects of grit and depression on the relationship between negative parenting style and functional somatic symptoms. Methods: This was a secondary analysis of data from the 2018 Korean Children and Youth Panel Survey (KCYPS). Mediation analysis was conducted using the PROCESS macro model 6. Results: The mediating effects of grit and depression between negative parenting style and functional somatic symptoms were significant. A negative parenting style was found to significantly affect functional somatic symptoms going through sequential mediating effects of grit and depression. Conclusion: To alleviate functional somatic symptoms in adolescents, it is necessary to provide interventions for developing grit that could reduce depression.

• 한국보육지원학회지
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• 제9권2호
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• pp.173-189
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• 2013

본 연구는 유아의 정보처리능력인 동시처리 및 순차처리능력과 기초학습능력이 어떠한 관계가 있는지, 그리고 읽기, 쓰기, 기초수학을 포함하는 기초학습능력에 대한 정보처리능력의 상대적 설명력이 어떠한지를 알아보고자 하였다. 취학직전 만 5~6세 유아 99명을 대상으로 유아그림기초학습능력검사와 K-ABC 검사를 실시하여 기초학습능력과 정보처리능력을 측정하였다. 본 연구결과로써 첫째, 유아의 정보처리능력과 기초학습능력 간 상관을 살펴본 결과, 유아의 순차처리능력과 기초학습능력 간, 동시처리능력과 기초학습능력 간 유의미한 정적 상관이 있는 것으로 나타났다. 각 하위영역인 읽기, 쓰기, 기초수학 능력과 동시처리 및 순차처리능력 간에도 유의미한 정적 상관이 있는 것으로 나타났다. 둘째, 유아의 기초학습능력에 대한 정보처리능력의 상대적 설명력을 알아본 결과, 유아의 정보처리능력 중 동시처리능력이 기초학습능력에 22%의 설명력을 가지며, 여기에 순차처리능력이 첨가됨으로써 설명력이 3% 증가하여 25%의 설명력을 가지는 것으로 나타났다.

• 한국경영과학회지
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• 제36권2호
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• pp.15-32
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• 2011

The research for exchange relationship in customer's perspective is meaningful especially in service, considering distinctive characteristics of service operations such as customer participation in the process whereas most of the recent related researches have been focused on employee's interaction with organization, leader, team and customer. In this study for beauty art service, the exchange party's characteristic is defined with beauty salon's reputation, staff's professionalism and customer's self-esteem. Also the exchange relation perception is classified into symbolism and interaction, Then the directional relations on customer's perspective are empirically investigated in the sequential order of the exchange party's characteristics, the exchange relation perception, the relationship quality and behavioral intention. In addition, the study examined the meditation effect via relationship quality between the exchange relation perception and the behavioral intention. Followings are confirmed from the statistical test with structural equation modelling：Symbolism is significantly caused by all of professionalism, reputation and self-esteem in the descending order of effect size whereas interaction is significantly influenced by only professionalism. The exchange relation perception has significant effect on the relationship quality, in turn which significantly affects behavioral intention. The exchange relation perception shows the significant indirect effect meditated by relationship quality and the insignificant direct effect on behavioral intention. This paper concludes with contribution of this study, managerial implication of the research findings and further research issues.

• 한국정보통신학회논문지
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• 제14권12호
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• pp.2724-2729
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• 2010

본 논문에서는 유한체상의 순차디지털시스템을 구성하는 방법을 제안하였다. 제안한 방법은 유한체의 성질로 부터 유한체상의 모든 원소를 디지트코드로 할당하는 알고리즘을 제안하였고, 유한체상의 순차디지털시스템을 구성하는데 사용하는 T-gate의 동작특성에 대해 논의하였으며, 이를 토대로 궤환이 없는 순차디지털시스템을 구성하였다. 이를 위해 상태천이도를 상태디지트코드로 할당하였고, 상태함수와 현재상태와 이전상태와의 관계를 나타내는 전순표를 도출하였다. 다음에 상태함수와 전순표로부터 다음상태함수를 도출하였으며, 이를 T-gate와 복호기를 시용하여 순차디지털시스템을 구성하였다. 제안한 방법으로 효과적이고 체계적으로 순차디지털시스템을 구성할 수 있었음을 확인하였다.

• 아태비즈니스연구
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• 제14권2호
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• pp.63-84
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• 2023

Purpose - The purpose of this study is to examine the effect of CSR activities on innovation performance and to identify the mediating role of knowledge sharing and innovation behaviors between CSR activities and innovation performance. In addition, the purpose of this study is to verify the role of sequential mediating effect of knowledge sharing and innovation behavior between CSR activities and innovation performance. Design/methodology/approach - This study collected survey data from 293 organizational members working in Chinese companies. The exploratory factor analysis (EFA), confirmatory factor analysis (CFA), reliability analysis, correlation analysis and process macro were used in order to analyze the data. Findings - First, this study verified that CSR activities had a significant positive effect on knowledge sharing, innovation behavior, and innovation performance. Second, it was found that knowledge sharing had a significant positive effect on innovation behavior and innovation performance. Third, it was verified that innovation behavior had a significant positive effect on innovation performance. Fourth, knowledge sharing and innovation behavior had a sequential mediating effect in the relationship between CSR activities and innovation performance. Research implications or Originality - With the uncertainty of the environment and the intensification of competition among companies, more and more companies begin to pay attention to innovation. Different from existing studies, this study focuses on CSR activities, identifies the role of CSR activities, explores ways to guide innovation performance, and verifies the sequential mediating role of knowledge sharing and innovation behavior. Through this measure, the importance of knowledge sharing and innovative behavior among organizational members is emphasized, solutions to strengthen innovation are explored, and theoretical and practical implications are provided for companies.

• Human Ecology Research
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• 제62권1호
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• pp.101-120
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• 2024

This study aimed to examine the effect of adolescents' perceived parental blame (criticism) on learned helplessness and to examine whether maladaptive metacognitive beliefs and rumination sequentially mediate the relationship between parental blame and learned helplessness. The participants were 316 adolescents (Mean age=16.7, SD=0.75; 137 male, 179 female) attending grades 1st and 2nd in high school in South Korea. The participants were selected using a snowball sampling method, while the data was collected via an online self-report questionnaire. This survey was completed by the participants and analyzed using SPSS 28.0, Amos 26.0 (IBM Co., Armonk, NY), and PROCESS macro version 4.2 (Model 6; Hayes, 2022). The main results are summarized as follows. Firstly, the adolescents' perceived paternal and maternal blame indicated significant direct effects on learned helplessness. Secondly, rumination mediated the effect of paternal and maternal blame on learned helplessness. Lastly, paternal and maternal blame significantly affected learned helplessness through the sequential mediating effects of maladaptive metacognitive beliefs and rumination. This study elucidates the causal structure among the various factors influencing learned helplessness in adolescents, focusing on parental blame, maladaptive metacognitive beliefs, and rumination. Furthermore, considering the verified sequential mediating effects of maladaptive metacognitive beliefs and rumination in the relationship between adolescents' perceived parental blame and learned helplessness, these findings suggest that modifying maladaptive metacognitive beliefs may help to reduce learned helplessness among adolescents who perceive high levels of parental blame.