This paper presents an experimental study of a newly developed composite floor system, built up from thin-walled C-profiles and upper concrete deck. Trapezoidal sheeting provides the formwork and the fastening of the sheet transmits the shear forces between the C-profiles and the deck. The modified formation of the standard self-drilling screw in the beam-to-sheet connection is applied as shear connector. Push-out tests are completed to study the composite behaviour of the different connection arrangements. On the basis of the test results the behaviour is characterized by the observed failure modes. The design values of the connection stiffness and strength are calculated by the recommendation of Eurocode 4. In the next phase of the experimental study six full-scale composite beams are tested. The global geometry is based on the proposed geometry of the developed floor system. The applied shear connections are selected as the most efficient arrangements obtained from the push-out tests. The experimental behaviour of the composite beams are discussed and evaluated. As a conclusion of the experimental study the Eurocode 4 plastic design method is validated for the developed composite floor.
Proceedings of the Korean Institute of Building Construction Conference
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2005.05a
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pp.1-4
/
2005
This study is to examine adhesion the characteristics of self adhesive asphalt to minimize of the construction periods and the environmental problems through the performance estimation of materials to reduce waterproof problem and the long durability maintenance of building structures. This study tested the estimation items of self rubberized adhesive asphalt to examine the sheet discovered the most important problem in the construction site and the connection stability in the sheet joint. Besides, this study examined the material characteristics such as tension property, tear property, temperature dependence, heat resistance, adhesion stability and so on. Test results of the separative items satisfied in the reference figure of connection stability and adhesion stability which could confirm adhesion performances and other items also satisfied in the reference.
Journal of the Korean Society of Clothing and Textiles
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v.21
no.6
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pp.1072-1081
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1997
The objectives of this study were to investigate the differences in appearance interest (clothing interest and body adornment) and self-confidence according to demographic variables such as age, education, and allowance, to examine the causal relationships of clothing interest and body adornment on self-confidence of elderly women. Subjects for this study were samples of 215 elderly women (ages 60 to 70) in Seoul, Korea. The instrument was a questionnaire and the survey was done in face-to-face method. 1. There was a significant difference in body adornment according to age. After age was controlled, there were significant differences in appearance interest and self-confidence according to education. There were significant differences in appearance interest and self- confidence according to allowance. 2. Education and allowance had a direct effect on clothing interest. Allowance, age, and education had a direct effect on body adornment. Education had a direct effect on allowance. 3. Clothing interest and allowance had a direct effect, and education had an indirect effect on self-confidence. Body adornment and allowance had a direct effect on self-confidence, education and age had an indirect effect on self-confidence. The present findings provide that appearance interest such as, clothing interest and body adornment had a significant effect on self-confidence of elderly women. It appeared that the connection between body adornment and allowance was stronger than the connection between clothing interest and allowance. The causal relationship of clothing interest on self- confidence was stronger than the causal relationship of body adornment on self-confidence. The clothing interest was a variable that most affected on self-confidence of elderly women.
Modular steel buildings consist of prefabricated room-sized structural units that are manufactured offsite and installed onsite. The inter-module connections must fulfill the assembly construction requirements and soundly transfer the external loads. This work proposes an innovative assembled connection suitable for modular buildings with concrete-filled steel tube columns. The connection uses pretensioned strands and plugin bars to vertically connect the adjacent modular columns. The moment-transferring performance of this inter-module connection was studied through monotonic and cyclic loading tests. The results showed that because of the assembly construction, the connected sections were separated under lateral bending, and the prestressed inter-module connection performed as a weak semirigid connection. The moment strength at the early loading stage originated primarily from the contact bonding mechanism with the infilled concrete, and the postyield strength depended mainly on the tensioned strands. The connection displayed a self-centering-like behavior that the induced deformation was reversed during unloading. The energy dissipation originated primarily from frictional slipping of the plugin bars and steel strands. The moment transferring ability was closely related to the section dimension and the arrangements of the plugin bars and steel strands. A simplified strength calculation and evaluation method was also proposed, and the effectiveness was validated with the test data.
Objectives : The purpose of this study was to investigate the connection between Symptom Checklist-90-R (SCL-90-R), Self-Efficacy Scale(SES) and Qi-gong. Methods : We investigated 141 oriental medical students in Daegu consisted of 36 subjects training Qi and 105 subjects not training. We had all subjects to reply to demographic questimnaire, SCL-90-R questimnaire and SES questimnaire. We made the Qi-training group write the kinds and periods of Qi seperately. Results & Conclusions : 1. The lower SCL-90-R score, the subjects had higher SES score. Total Self-Efficacy score was connected Somatization, Interpersonal Sensitivity, Depression, Paranoid Ideation, Paranoid Ideation score significantly. General Self-Efficacy score was connected Somatization, Obsessive- Compulsive, Interpersonal Sensitivity, Paranoid Ideation, Paranoid Ideation score significantly. Social Self-Efficacy score was connected Interpersonal Sensitivity, Depression, Anxiety score significantly. 2. The Qi-training group's mean all the details of SCL-90-R lower than the non-training's significantly in Somatization, Obsessive-Compulsive, Interpersonal Sensitivity, Depression, Hostility, Paranoid Ideation, Psychoticism. And the Qi-training group's mean all the details of SES higher than the non-training's, significantly in General Self-Efficacy. 3. In Qi-training group, as training longer, mean Somatization, Interpersonal Sensitivity, Depression, Anxiety, Hostility scores get lower and mean Total Self-Efficacy score get higher significantly.
Exposed column base connections are used in low- to mid-rise steel moment resisting frames. This paper is to investigate the effect of the base plate thickness on the exposed column base connection strength, stiffness, and energy dissipation. Five specimens with different base plate thickness were numerically modelled using ABAQUS software. The numerical model is able to reproduce the key characteristics of the experimental response. Based on the numerical analysis, the critical base plate thickness to identify the base plate and anchor rod yield mechanism is proposed. For the connection with base plate yield mechanism, the resisting moment is carried by the flexural bending of the base plate. Yield lines in the base plate on the tension side and compression side are illustrated, respectively. This type of connection exhibits a relatively large energy dissipation. For the connection with anchor rod yield mechanism, the moment is resisted through a combination of bearing stresses of concrete foundation on the compression side and tensile forces in the anchor rods on the tension side. This type of connection exhibits self-centering behavior and shows higher initial stiffness and bending strength. In addition, the methods to predict the moment resistance of the connection with different yield mechanisms are presented. And the evaluated moment resistances agree well with the values obtained from the FEM model.
The Journal of Korean Academic Society of Nursing Education
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v.17
no.2
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pp.208-217
/
2011
Purpose The purpose of this study was to explore the experience of service-learning in connection with the major of nursing. Method: This is qualitative research based on the application of a focus-group research method and Glaser's grounded theory. The nine participants of the research participated in the process of developing a service-learning program to promote health in the elderly. They operated the program by acting as instructors for more than 12 months. Results: The basic socio-psychological problems hared by the participants of the research is 'burden'. The basic social process required to solve the problem is 'self-realization' which has been successively shown in the order of the stage of experiencing a surge of will, the stage of recognizing the occurrence of internal and external changes, the stage of being confident, and the stage of obtaining self-respect. Throughout the process, the participants solved 'burden' in a positive way through reflections and reciprocity, developing and strengthening their capabilities. Conclusion: Based on the results, it is necessary to consider the development of a service-learning program in connection with the nursing major in order to provide the students studying nursing with the opportunity to have various learning experiences.
To make direct comparisons regarding the cyclic behavior of thin steel plate shear walls (TSPSWs) with different infill-to-boundary frame connections, two TSPSWs were tested under quasi-static conditions, one having the infill plate attached to the boundary frame members on all edges and the other having the infill plate connected only to the beams. Also, the bare frame that was used in the TSPSW specimens was tested to provide data for the calibration of numerical models. The connection of infill plates to surrounding frames was achieved through the use of self-drilling screws to fish plates that were welded to the frame members. The behavior of TSPSW specimens are compared and discussed with emphasis on the characteristics important in seismic response, including the initial stiffness, ultimate strength and deformation modes observed during the tests. It is shown that TSPSW specimens achieve significant ductility and energy dissipation while the ultimate failure mode resulted from infill plate fracture at the net section of the infill plate-to-boundary frame connection after substantial infill plate yielding. Experimental results are compared to monotonic pushover predictions from computer analysis using strip models and the models are found to be capable of approximating the monotonic behavior of the TSPSW specimens.
The Transactions of The Korean Institute of Electrical Engineers
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v.57
no.10
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pp.1888-1892
/
2008
In this paper, a new parallel CMOS self-bias differential amplifier is designed to use in high-speed analog signal processing circuits. The designed parallel CMOS self-bias differential amplifier is developed by using internal biasing circuits and the complement gain stages which are parallel connected. And also, the parallel architecture of the designed parallel CMOS self-bias differential amplifier can improve the gain and gain-bandwidth product of the typical CMOS self-bias differential amplifier. With 1.8V $0.8{\mu}m$ CMOS process parameter, the results of HSPICE show that the designed parallel CMOS self-bias differential amplifier has a dc gain and a gain-bandwidth product of 64 dB and 49 MHz respectively.
Research regarding corporate associations in marketing has generally been approached using the association theory. However, limited research investigates the effect of corporate associations on consumer loyalty to individual brands by examining the role of self connectedness with a corporate image. The activation of behavior-related constructs can influence individuals' behaviors without their intention or conscious awareness. A recently developed body of research suggests that self connection can play an important role in affecting subsequent behaviors. Although these effects have received considerable attention, the set of mechanisms involved in self connectedness and loyalty to individual brands is not clear. An active self account in which associative constructs can affect behavior by temporarily altering the active self-concept may lead to behavior or evaluation. If the exposure to a corporate brand can induce consumers' cognitive associations and goal-primed effects through the role of active self accounting, the connectedness between the consumer's self and the corporate brand could be developed and this connectedness could be explained by associative and connection models and the goal priming theory. Therefore, this study investigates the influence of corporate associations on loyalty to individual brands through connections between the corporate and the consumer's self. There are three main purposes of the research. First, theories regarding corporate associations will be explored. Second, theories of self-concept will be investigated and self connectedness with corporate brands will be explored. Third, the effects of the connectedness between the self and the corporation on corporate identification and loyalty to individual brands will be investigated. For the purposes of this research, the types of corporate associations are classified into corporate ability (CA) associations and corporate social responsibility (CSR) associations. Furthermore, the connectedness between the consumer's self and the corporate image are divided into two concepts: the connectedness between the individual self-concept and the corporate identity and the connectedness between social self-concept and the corporate identity. This study suggests the hypotheses that the types of consumer self connections with the corporate image could vary according to the types of corporate associations created and further that the connectedness between the corporate association and the consumer's self-concept have positive effects on loyalty to corporate individual brands. The results of testing these hypotheses are as follows. First, corporate ability associations enhance the connectedness between the consumer's individual self and corporate brands. That is, corporate ability associations influence individual connectedness between the corporate and individual self-concept positively from the viewpoint of the consumer's personal ability and branding success. In addition, corporate social responsibility associations have a positive effect on social connectedness between the corporation and the consumer's social self-concept. Second, the connectedness between the corporate brand and the consumer's self-concept affects identification with the corporation. The consumer's personal self and social self connectedness induces corporate identification. Third, individual self connectedness has a positive effect on loyalty to corporate individual brands, while social self connectedness does not. This also means that individual self connectedness with the corporate image or brand plays a more important role in forming individual brand loyalty than social self connectedness with the corporate does. In addition, social connectedness cannot influence individual brand loyalty until it passes through identification with the corporate. Fourth, consumers who experience identification with a corporate identity also show positive responses to corporate individual brands. That is, consumers also develop loyalties toward individual brands through the corporate identification because self-pursued goals that are induced by corporate associations can be achieved by consuming the individual brands that are sold by the corporate that the consumers identify with.
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