• 제목/요약/키워드: Multi-group Analysis

검색결과 880건 처리시간 0.038초

Social Support for Social Commerce: An Empirical Study with Trust as a Mediator and Culture as Moderator

  • Hossain, Md. Alamgir;Jahan, Nusrat;Kim, Minho;Yesmin, Most. Nirufer;Hasan, Raquibul
    • Journal of Korea Trade
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    • 제25권7호
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    • pp.75-91
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    • 2021
  • Purpose - Social commerce (SC) is the growth of social media highlighting the e-commerce transactions and currently, the greatest challenges of e-commerce have attracted the influence of trust in social commerce intention (SCI). Based on the challenge, the study's purpose is to discover the effect of social support (informational and emotional support) on the SCI. The study also explores the mediation effect of trust and the moderation impact of culture between the USA and Korea. Design/methodology - This study used a sample of 482 surveys filled out by online shoppers from the US and Korea, two countries with divergent cultural values. Structural equation modelling (SEM) is used to analyze the hypothetical paths. In addition, bootstrapping and multi-group analysis are perform to view mediation and moderation effects respectively. Findings - The results of our study shows that both informational and emotional support significantly influences trust and SCI. Our results also supports the mediating effect of trust in social support and the moderating effect of culture in forming SCI. Originality/value - Our empirical results provide important information to businesses formulating cross-cultural SC strategies. This will help SC companies to analyze the aspects of customer trust through social support, which in turn will increase SCI and thereby established a competitive position for SCs. Our results will also be holistic directions for SC vendors in cross-cultural settings, which will offer important social and economic contributions to the sustainable growth of SC's business.

커뮤니케이션 플랫폼에 따른 패션 내러티브 분석 - 루이비통을 중심으로 - (Analysis of fashion narrative by communication platforms - Louis Vuitton as a case study -)

  • 박소형;임은혁
    • 복식문화연구
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    • 제26권6호
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    • pp.994-1014
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    • 2018
  • The objective of this study was to evaluate the characteristics of the fashion narrative from the commercial and artistic viewpoints by identifying and evaluating the attributes of the fashion narrative and analyzing the fashion narrative focusing on various cases according to fashion media. Louis Vuitton, a brand of the Louis Vuitton $Mo{\ddot{e}}t$ Hennessy (LVMH) group that operates the entire fashion community platform, is recognized as an influential luxury company with enormous capital and capabilities. This study targeted Louis Vuitton to examine the fashion narrative. The common results of Louis Vuitton's fashion narrative according to the communication platform are as follows. First, it emphasizes well-designed craftsmanship and artistry to convey the value and meaning of the brand. Second, it expresses the lifestyle of the bourgeoisie using traveling for finding life purpose, nature, and freedom as common denominators. Louis Vuitton connects, shares, and engages with customers by crossing the communication platform and trying multi-sensory changes based on the fashion narrative of the 'artification' message encompassing craftsmanship, innovation, and travel. The fashion narrative of Louis Vuitton applies tools (e.g., design, direction, stage, and props) differently according to the nature of media. In other words, the fashion narrative in the form of transmedia storytelling is a marketing communication strategy that indicates the representation means and direction of a brand's goals by remediating the brand narrative in various ways through the communication platform.

원위 비골 골절의 수술 후 발생한 불유합의 관련 인자 (The Risk Factors Associated with Nonunion after Surgical Treatment for Distal Fibular Fractures)

  • 이준영;최귀연;강신욱;고강열
    • 대한족부족관절학회지
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    • 제22권3호
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    • pp.95-99
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    • 2018
  • Purpose: The purpose of this study was to evaluate the radiologic outcomes of distal fibular fractures and to analyze the risk factors associated with nonunion. Materials and Methods: Between January 2009 and March 2016, 13 patients who had final nonunion with ankle fracture were included. In the control group, 370 patients who had undergone bony union and removed metal implants were included. All patients underwent the same surgical procedure and had the same treatment method, ultimately achieving satisfactory open reduction results with less than 2 mm fracture gap. Surgical treatment of fracture was considered to have the same effect on nonunion, and factors that might be associated with nonunion were evaluated. SPSS ver. 13.0 (SPSS Inc., USA) was used for all statistical analyses. Pearson's chi-square test and multi-variate regression analysis were performed to determine the factors affecting nonunion of distal fibular fracture. A p-value less than 0.05 was considered statistically significant, and relative risk was assessed. Results: The mean age of 13 patients was 46.9 years (range, 16~57 years); there were 8 men and 5 women. Among the 13 patients with nonunion, atrophic was the most common (12 cases). The association between the injury mechanism and the Lauge-Hansen classification and diabetes mellitus was not statistically significant. Distal fibular fractures with tibia shaft fracture (p=0.015) and Danis-Weber type C fracture (p=0.023), open fracture (p=0.011), and smoking (p=0.023) were significantly associated with nonunion. Conclusion: In this study, the combined injury of the ipsilateral tibia shaft fracture, open fracture, and Danis-Weber type C fracture may increase the possibility of nonunion. Therefore, caution is advised to prevent nonunion.

성별에 따른 SNS사용유형이 우울감에 미치는 영향연구: 집단소속감, 지각된 사회지지, 부정적 사회비교의 매개효과 (The Relation between Social Networking Sites and Depression by Gender: Mediating effects of Collective Identity, Perceived Social Support, and Negative Comparison)

  • 이승욱;최윤영;이현우
    • 한국융합학회논문지
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    • 제10권8호
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    • pp.205-215
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    • 2019
  • 본 연구는 Social Networking Sites(SNS)의 사용유형과 우울감의 관계에서 지각된 사회지지와 부정적 사회비교의 매개효과가 성별에 따라 차이가 있는지를 살펴보았다. 이를 위해 483명의 성인들을 대상으로 수집된 자료를 이용하여 다집단 구조방정식 분석을 실시하였고, 부트스트랩 분석으로 매개효과를 살펴보았다. 연구 결과로는 남녀 모두 SNS를 통해 집단소속감을 느끼며 높은 집단소속감은 높은 사회지지와 낮은 우울감으로 연결되었고, 높은 부정적 사회비교는 높은 우울감으로 연결되었다. 그러나 남성의 경우 집단소속감과 부정적 사회비교 간의 유의미한 관계는 나타나지 않은 반면 여성의 경우 집단소속감이 높을수록 부정적 사회비교 역시 높았고 이는 우울감에 유의미한 영향을 미쳤다. 따라서 SNS의 사용은 온라인 환경에서의 집단소속감을 가질 수 있는 긍정적인 효과가 있으나, 성별에 따른 집단 내에서의 소속감은 부정적 사회비교에 서로 다른 영향을 주었고 이에 따라 우울감이 달라질 수 있음을 시사하였다.

Identification of Putative Regulatory Alterations Leading to Changes in Gene Expression in Chronic Obstructive Pulmonary Disease

  • Kim, Dong-Yeop;Kim, Woo Jin;Kim, Jung-Hyun;Hong, Seok-Ho;Choi, Sun Shim
    • Molecules and Cells
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    • 제42권4호
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    • pp.333-344
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    • 2019
  • Various genetic and environmental factors are known to be associated with chronic obstructive pulmonary disease (COPD). We identified COPD-related differentially expressed genes (DEGs) using 189 samples accompanying either adenocarcinoma (AC) or squamous cell carcinoma (SC), comprising 91 normal and 98 COPD samples. DEGs were obtained from the intersection of two DEG sets separately identified for AC and SC to exclude the influence of different cancer backgrounds co-occurring with COPD. We also measured patient samples named group 'I', which were unable to be determined as normal or COPD based on alterations in gene expression. The Gene Ontology (GO) analysis revealed significant alterations in the expression of genes categorized with the 'cell adhesion', 'inflammatory response', and 'mitochondrial functions', i.e., well-known functions related to COPD, in samples from patients with COPD. Multi-omics data were subsequently integrated to decipher the upstream regulatory changes linked to the gene expression alterations in COPD. COPD-associated expression quantitative trait loci (eQTLs) were located at the upstream regulatory regions of 96 DEGs. Additionally, 45 previously identified COPD-related miRNAs were predicted to target 66 of the DEGs. The eQTLs and miRNAs might affect the expression of 'respiratory electron transport chain' genes and 'cell proliferation' genes, respectively, while both eQTLs and miRNAs might affect the expression of 'apoptosis' genes. We think that our present study will contribute to our understanding of the molecular etiology of COPD accompanying lung cancer.

온라인 해외직접구매의 쇼핑가치가 호기심 및 자기효능감을 매개로 지속사용의도에 미치는 영향 -헤비유저와 라이트유저의 비교- (The Effect of Shopping Value on Continuous Use Intention of Online Cross-border Shopping Mediated by Curiosity and Self-efficacy -Comparing Heavy and Light User-)

  • 윤남희;김현숙;추호정
    • 한국의류학회지
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    • 제44권5호
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    • pp.1004-1018
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    • 2020
  • Advances in e-commerce enable consumers to shop efficiently for fashion products in global markets in addition, the market size of purchasing directly from foreign websites are also increasing. This study investigates the effects of hedonic and utilitarian shopping values on the continuous use intention of online cross-border shopping. Curiosity and self-efficacy were introduced as mediating variables between shopping values and user intentions. A web-based survey is conducted on female consumers, who have experiences to buy fashion products by online cross-border shopping. A total of 472 responses were collected from a panel of online survey firms. Data are analyzed using confirmatory factor analysis, structural equation modeling, and multi-group SEM by AMOS 21.0. According to the results of the structural equation model test, hedonic value affected continuous use intention of online cross-border shopping as mediated by curiosity and self-efficacy; in addition, utilitarian value influenced self-efficacy, which mediated relations between the utilitarian value and the continuous use intention. The research model was also tested to compare heavy users and light users of online cross-border shopping. For heavy users, the effect of hedonic value on curiosity was significantly stronger than for light users. Several implications are suggested based on the results.

멀티플렉스관의 서비스 요인이 소비 가치와 재방문 의도에 미치는 영향: 베트남과 한국 멀티플렉스관 비교 (The Effects of Service Factors on Customer's Consumption Value and Revisit Intention in Multiplex Cinema Service: Focusing on Multiplex Cinema Service in Korea and Vietnam)

  • 응왠티한융;박진서;채명수
    • 국제지역연구
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    • 제21권2호
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    • pp.197-218
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    • 2017
  • 본 연구는 서비스 분야에 속하는 멀티플렉스 영화관 산업의 특징을 고려하여 한국과 베트남 멀티플렉스관에서 제공되는 서비스 요소들을 살펴보고, 서비스 요인들이 고객의 소비 가치와 재방문 의도에 미치는 영향 관계를 멀티플렉스 산업이 성장하는 베트남 시장과 성숙한 한국시장 간을 비교하여 분석하고자 하였다. 실증분석 결과, 서비스 요인들은 고객의 소비 가치에 긍정적인 영향을 미치는 것으로 확인되었으며, 양 국가 고객 모두 실용적 가치와 쾌락적 가치가 재방문 의도에 긍정적 영향을 미치는 것으로 밝혀졌다. 특히, 한국 고객들은 베트남 고객들에 비해 실용적 가치가 재방문 의도에 더 큰 영향을 미치는 반면, 베트남 고객들은 한국 고객들보다 재방문하는데 있어 쾌락적 가치를 더 중요시 하는 것으로 밝혀졌다.

표준화된 간호진단 및 문제와 NANDA-I 교차분석: 4개 상급종합병원 사례를 중심으로 (Cross Mapping of Standardized Nursing Diagnoses and Problems with NANDA-I in 4 Tertiary Hospitals)

  • 송미라;심소연;김대성;이경순;이유나;원미숙
    • 임상간호연구
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    • 제26권3호
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    • pp.374-384
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    • 2020
  • Purpose: To explore the scope and method of applying standardized nursing terminologies to nursing diagnosis and problems used in nursing practice. Methods: A descriptive study was done with a retrospective analysis of the nursing records of 141,420 patients that were hospitalized in 4 tertiary hospitals. The nursing diagnosis and problems collected from the records were standardized, and the standardized nursing diagnosis and problems cross mapped with NANDA-I, confirmed in a nursing focus group. Results: 65 (67.7%) of the 96 standardized nursing diagnosis and problems were equal with NANDA-I and included in the 10 domains of NANDA-I. Among 86 nursing diagnosis and problems excluded from the cross mapping with NANDA-I, the 63 terms (73.3%) related to surgery/procedure were the most common. Conclusion: It is meaningful that multi-tertiary hospital nursing diagnosis and problems were standardized and cross mapping with standard nursing terminologies was performed. As for the method of applying standardized nursing terminologies in nursing practice, it is appropriate to use several standardized nursing terminologies complementarily.

Jacobian-free Newton Krylov two-node coarse mesh finite difference based on nodal expansion method

  • Zhou, Xiafeng
    • Nuclear Engineering and Technology
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    • 제54권8호
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    • pp.3059-3072
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    • 2022
  • A Jacobian-Free Newton Krylov Two-Nodal Coarse Mesh Finite Difference algorithm based on Nodal Expansion Method (NEM_TNCMFD_JFNK) is successfully developed and proposed to solve the three-dimensional (3D) and multi-group reactor physics models. In the NEM_TNCMFD_JFNK method, the efficient JFNK method with the Modified Incomplete LU (MILU) preconditioner is integrated and applied into the discrete systems of the NEM-based two-node CMFD method by constructing the residual functions of only the nodal average fluxes and the eigenvalue. All the nonlinear corrective nodal coupling coefficients are updated on the basis of two-nodal NEM formulation including the discontinuity factor in every few newton steps. All the expansion coefficients and interface currents of the two-node NEM need not be chosen as the solution variables to evaluate the residual functions of the NEM_TNCMFD_JFNK method, therefore, the NEM_TNCMFD_JFNK method can greatly reduce the number of solution variables and the computational cost compared with the JFNK based on the conventional NEM. Finally the NEM_TNCMFD_JFNK code is developed and then analyzed by simulating the representative PWR MOX/UO2 core benchmark, the popular NEACRP 3D core benchmark and the complicated full-core pin-by-pin homogenous core model. Numerical solutions show that the proposed NEM_TNCMFD_JFNK method with the MILU preconditioner has the good numerical accuracy and can obtain higher computational efficiency than the NEM-based two-node CMFD algorithm with the power method in the outer iteration and the Krylov method using the MILU preconditioner in the inner iteration, which indicates the NEM_TNCMFD_JFNK method can serve as a potential and efficient numerical tool for reactor neutron diffusion analysis module in the JFNK-based multiphysics coupling application.

AI 기반 패션 챗봇 서비스에 대한 소비자 수용의도 -챗봇의 준사회적 실재감 특성을 중심으로- (Consumer Acceptance Intention of AI Fashion Chatbot Service -Focusing on Characteristics of Chatbot's Para-social Presence-)

  • 허희진;김우빈
    • 한국의류학회지
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    • 제46권3호
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    • pp.464-480
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    • 2022
  • With the steady development of Artificial Intelligence (AI), online stores are adopting chatbot services as virtual shopping assistants. This study proposes the concept of para-social presence to explore the undiscovered role of fashion chatbots' emotional and relational characteristics on service acceptance. Based on the Technology Acceptance Model (TAM), this study investigates the effect of a chatbot's para-social presence on service acceptance intention through consumers' beliefs. The web-based experiment was conducted on adult consumers who experienced chatbot services in an online shopping situation. A total of 247 responses were analyzed using confirmatory factor analysis, structural equation modeling, and multi-group SEM by AMOS 21.0 and SPSS 23.0. The findings illustrate that the chatbot's intimacy positively influenced consumers' perceived enjoyment, while the chatbot's understanding had a significant effect on perceived usefulness and ease of use. The chatbot's involvement had a positive effect on all consumer beliefs. Moreover, perceived ease of use had a positive influence on usefulness. A greater level of perceived usefulness and enjoyment positively heightened consumers' service acceptance intention. This study also verifies the moderating role of a need for human interaction. Consumers with a high need for human interaction have a relatively low tendency to perceive chatbot services as useful.