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Interhemispheric Modulation on Afferent Sensory Transmission to the Ventral Posterior Medial Thalamus by Contralateral Primary Somatosensory Cortex

  • Jung, Sung-Cherl;Choi, In-Sun;Cho, Jin-Hwa;Kim, Ji-Hyun;Bae, Yong-Chul;Lee, Maan-Gee;Shin, Hyung-Cheul;Choi, Byung-Ju
    • The Korean Journal of Physiology and Pharmacology
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    • v.8 no.3
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    • pp.129-132
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    • 2004
  • Single unit responses of the ventral posterior medial (VPM) thalamic neurons to stimulation were monitored in anesthetized rats during activation of contralateral primary somatosensory (SI) cortex by GABA antagonist. The temporal changes of afferent sensory transmission were quantitatively analyzed by poststimulus time histogram (PSTH). Mainly, afferent sensory transmission to VPM thalamus was facilitated (15 neurons of total 23) by GABA antagonist (bicuculline) applied to contralateral cortex, while 7 neurons were suppressed. However, when ipsilateral cortex was inactivated by GABA agonist, musimol, there was significant suppression of afferent sensory transmission of VPM thalamus. This suppressed responsiveness by ipsilateral musimol was not affected by bicuculline applied to contralateral cortex. These results suggest that afferent transmission to VPM thalamus may be subjected to the interhemispheric modulation via ipsilateral cortex during inactivation of GABAergic neurons in contralateral SI cortex.

Capital and Non-Capital Region College Students' Housing Costs and Their Perception and Status of Parental Supports (수도권과 비수도권 대학생의 주거비 및 주거비 부모 지원 인식과 실태)

  • Yu, Seoyeon;Jung, Yeojin;Lee, Seyeon;Lee, Hyun-Jeong
    • Korean Journal of Human Ecology
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    • v.23 no.6
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    • pp.1231-1247
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    • 2014
  • The purpose of this study was to explore housing cost burden and financial support from parents to afford housing costs of college students from Capital and non-Capital regions. On-site and on-line questionnaire surveys were conducted to college students between March 3 and April 4, 2014, and total 241 useable responses were collected. Findings are as follow: (1) Jeon-se renters and monthly renters with deposit in Capital region were found to have paid greater housing costs than those in non-Capital region; (2) 86% of Jeon-se renters, 95% of monthly renters with deposit, and 80% of monthly renters without deposits were found to have received parental supports to pay housing costs; (3) respondents in Capital region tended to perceive influence of housing costs on housing choices greater than those in non-Capital region; and (4) more than a quarter of the respondents thought it would be proper to receive parental supports for all expenses until college graduation.

The Effect of Authentic Leadership and Psychological Contract Breach on Organizational Cynicism: Focusing on the Moderated Mediation of Followers' Identification with the Leader

  • Kim, Yesung;Shin, Je-Goo
    • Knowledge Management Research
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    • v.18 no.4
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    • pp.1-29
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    • 2017
  • This study sets out to verify the moderated mediation of followers' identification with the leader on the indirect effect of authentic leadership on organizational cynicism via psychological contract breach. A total of 279 responses from employees at companies with more than 500 employees and of diverse industries were used for analysis. Our findings showed that authentic leadership (X) had a negative indirect effect on organizational cynicism (Y) via psychological contract breach (M), and that this indirect effect was negatively moderated by identification with the leader, thereby identifying its role as a moderating mediator. Further verification revealed that the indirect effect ($X{\rightarrow}M{\rightarrow}Y$) was conditional upon the value of the moderating variable, where identification with the leader had a significant effect in the 25%, 50%, 75%, 90% levels, but not in the 10% level. The findings of this research empirically verified that greater exertion of authentic leadership lowers psychological contract breach among organization members and, consequently, organizational cynicism. In particular, this effect was stronger when the organization member identified him/herself more strongly with the leader. Our findings extend the body of knowledge on the relationship between authentic leadership and organizational cynicism and expands the possibilities for future research.

Multiple tuned mass dampers for controlling coupled buffeting and flutter of long-span bridges

  • Lin, Yuh-Yi;Cheng, Chii-Ming;Lee, Chung-Hau
    • Wind and Structures
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    • v.2 no.4
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    • pp.267-284
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    • 1999
  • Multiple tuned mass dampers are proposed to suppress the vertical and torsional buffeting and to increase the aerodynamic stability of long-span bridges. Each damper has vertical and torsional frequencies, which are tuned to the corresponding frequencies of the structural modes to suppress the resonant effects. These proposed dampers maintain the advantage of traditional multiple mass dampers, but have the added capability of simultaneously controlling vertical and torsional buffeting responses. The aerodynamic coupling is incorporated into the formulations, allowing this model to effectively increase the critical speed of a bridge for either single-degree-of-freedom flutter or coupled flutter. The reduction of dynamic response and the increase of the critical speed through the attachment of the proposed dampers to the bridge are also discussed. Through a parametric analysis, the characteristics of the multiple tuned mass dampers are studied and the design parameters - including mass, damping, frequency bandwidth, and total number of dampers - are proposed. The results indicate that the proposed dampers effectively suppress the vertical and the torsional buffeting and increase the structural stability. Moreover, these tuned mass dampers, designed within the recommended parameters, are not only more effective but also more robust than a single TMD against wind-induced vibration.

The Effects of Team Characteristics on the Innovation Performance in R&D Organizations : The Mediating Effect of Creative Climate (R&D조직의 창의적 팀 특성이 혁신성과에 미치는 영향 : 창의적 풍토의 매개효과)

  • Jang, Eun-Young;Kim, Byung-Keun
    • Journal of the Korean Operations Research and Management Science Society
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    • v.41 no.4
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    • pp.75-93
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    • 2016
  • This study aims at analyzing the relationship between team characteristic and innovation performance. The mediating effect of creative climate on the team characteristic and innovation performance is also measured. Based upon literature review, individual creative characteristics, team diversity, team cohesion, task characteristics are presented as antecedents of team characteristic. Creative climate affects the creative behavior and innovative performance. Creative climate is measured as the Team Climate Inventory (TCI) proposed by Anderson & West (1998) including goal, participative-autonomy and innovative-support. Data were collected from 186 survey responses (54 Teams) out of total 462 (69 teams) from the R&D department of a major ICT firm in Korea. Empirical results show the diversity, cohesion, job characteristic, individual creative characteristic have a positive effect on the creative climate and innovation performance. The participative-autonomy climate factor appears to mediate the relationship between team characteristic (diversity, cohesion, job and individual characteristics) and innovation performance. However, the mediating effects of goals and innovative-support factors were not significant statistically. It was confirmed that the organization can contribute to improve the team innovation performance by facilitating a autonomy and participative climate as well as fostering the team characteristic.

Impact of Intention and Technology Awareness on Transport Industry's E-service: Evidence from an Emerging Economy.

  • Ahmed, Umair;Zin, Md Lazim Mohd;Majid, Abdul Halim Abdul
    • The Journal of Industrial Distribution & Business
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    • v.7 no.3
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    • pp.13-18
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    • 2016
  • Purpose - Usage of E-services is critical for businesses to maximize work efficiency and gain competitive advantage. The aim of the study is to explore how awareness of technology and e-services usage in an emerging economy in Pakistan. The studies aimed to explore as to what extent these factors can potentially motivate transport employees towards e-services; who are generally not aware about technology and hence also not confident in using it also. Research design, data, and methodology - Employees from the three transport subsidiary units from a large private company in Pakistan were sampled for the study. Through using self-administered technique, the questionnaires were distributed during the month of April, 2016 to 189 employees. A total of 150 responses were taken further for analysis where the study found a positive link between awareness of technology and e-services usage. Results - This study found positive relationship between intention to use and e-service usage among the employees of three subsidiary units. The paper has reported 30 percent variance explained by the predicting variables in relation with e-services usage. Conclusions - Employees could be motivated to use e-services and latest technology through enhancing their awareness about their respective importance and viability. Accordingly, organizations can foster employees' intentions to use to enhance e-service usage.

A Study on the Behavior of the User according to the Distribution Development of Online Travel Agency

  • MIN, So-Ra;LEE, Sun-Mi
    • Journal of Distribution Science
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    • v.18 no.6
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    • pp.25-35
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    • 2020
  • Purpose:Travel agencies have use digital tools in order to shift the paradigm in how business is conducted. Online travel agencies provide the same services as a normal travel agency, including hotels, transportation, guided tours, reservations, and related services, but using an "online platform. Travelers planning a trip can use a lot of forms to collect information and have access to a larger amount of information, so the factors that influence the user's behavioral intention are very important. This research has the conducted to find what factors lead to the attitudes of consumers in using OTA using the UTAUT model. Research design, data and methodology: The object of this study were respondents of a google survey using convenient sample extraction method, chosen among consumers who gathered information, or purchased a product. A total of 217 of the 235 questionnaires Google survey answered were used in the final analysis, excluding insincere responses. Using PSS v.21 and AMOS v.21, frequency analysis, feasibility and reliability analysis, path analysis was performed. Results: UTAUT affects OTA use satisfaction and trust, and OTA satisfaction and trust affect behavior intention. Conclusions: Research was conducted using the UTAUT model to explore factors that affect the attitudes of users of online travel agencies (OTA).

The Factors Affecting Smartphone User's Intention to use Mobile Anti-Malware SW (스마트폰 이용자의 악성코드용 모바일 백신 이용 의도에 영향을 미치는 요인)

  • Jang, Jaeyoung;Kim, Jidong;Kim, Beomsoo
    • Journal of Information Technology Services
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    • v.13 no.2
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    • pp.113-131
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    • 2014
  • Smartphone security threat has become an important issue in Information Science field following the wide distribution of smartphones. However, there are few studies related to such. Therefore, this study examined the factors affecting the intention of smartphone users to use the mobile vaccine against malware with the Protection Motivation Theory. To secure the reliability of the study, a surveying agency was commissioned. A total of 263 respondents, excluding 37 respondents who are users of iOS, which does not have mobile vaccine in the smart phone, or who gave invalid responses, were surveyed. The results showed that perception of the installed mobile vaccine significantly affected the Response Efficacy and Self-efficacy, and that the Perceived Severity, Perceived Vulnerability, Response Efficacy, and Self-efficacy significantly influenced the intention to use the mobile vaccine. On the other hand, Installation Perception of mobile vaccine itself did not affect the Perceived Severity and Perceived Vulnerability. This study is significant since it presented the new evaluation model of threat evaluation and response evaluation in the Protection Motivation Theory in accepting the security technology and raised the need for the promotion and exposure of mobile vaccine, since perception of mobile vaccine installation affects the response evaluation. It also found that the promotion must consider the seriousness of smartphone security, outstanding attribute of mobile vaccine, and user-friendliness of mobile vaccine above all.

Psychic Distance and Country Image Influencing on Consumers' Competitive Brand Choice on Cross-Cultural Perspectives (교차문화적 관점에서 경쟁적 브랜드 선택에 영향을 미치는 심리적 거리 및 국가이미지)

  • Chun, Myung-Hwan
    • The Journal of the Korea Contents Association
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    • v.6 no.10
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    • pp.53-61
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    • 2006
  • Culture, consumers' value and attitude play an important role for global marketing strategy on cross-cultural perspectives. The aim of this research was to investigate how consumer ethnocentrism and cultural affinity affect psychic distance, country image and competitive brand choice. data were collected through personal interview. A total of 234 responses are put to final analysis. The results are as follows: First, cultural affinity play an important role for psychic distance and country image. Second, consumer ethnocentrism has directly affected country image and psychic distance. Finally, country image has affected competitive brand choice, but psychic distance doesn't have affected.

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The Effect of Strategic Intuition, Business Analytic, Networking Capabilities and Dynamic Strategy on Innovation Performance: The Empirical Study Thai Processed Food Exporters

  • AUJIRPONGPAN, Somnuk;HAREEBIN, Yuttachai
    • The Journal of Asian Finance, Economics and Business
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    • v.7 no.1
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    • pp.259-268
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    • 2020
  • The purpose of this study is to examine the predictive effects of intuition, business analytic, networking capabilities on innovation performance. The data was collected using a cross-sectional quantitative survey. A total of 292 useable responses were collected from Thai Processed Food Exporters (TPFE). The findings also indicated that the hypothesized relationships between the independent and dependent variables fit the empirical data. Specifically, it is revealed that strategic intuition, business analytic capabilities, network-based capabilities and dynamic capabilities had a direct effect on dynamic strategy. They also had statistically significant direct and indirect effects on dynamic performance. Based on the results of the correlation test, the researchers developed a dynamic capability model for the development of the dynamic performance of the operators, which included concepts, principles, methods, tools and guidelines. Furthermore, the impacts of intuition, business analytic, networking capabilities on dynamic strategy are also examined in this study. It makes a considerable contribution to the existing literature on dynamic strategy of TPFE, particularly in regards to explaining the performance.