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While university‐level education is increasingly recognized as an important component of sustainable approaches to development, little empirical research has been done on the impact of sustainability education on student behavior. This study relies on an evidence‐based research approach to better understand how graduate coursework on sustainable development can facilitate learning and transform the perceptions and reported behavior of class participants. Specifically, the authors use ecological footprint analysis in an interdisciplinary graduate‐level course on sustainable development to make statistical conclusions about the degree to which education on sustainability influences students’ daily consumption patterns. The results of this study suggest that graduate‐level education can significantly increase the degree to which students behave in a sustainable manner as measured by their ecological footprints. 相似文献
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Joan E. Hughes Scott McLeod Rachel Brown Yukiko Maeda Jiyoung Choi 《The American journal of distance education》2013,27(4):199-214
This study identified pre-entry variables related to course completion and noncompletion in university online distance education courses. Four hundred and sixty-four students who were enrolled in online distance education courses participated in the study. Discriminant analysis revealed six pre-entry variables were related to retention, including cumulative grade point average, class rank, number of previous courses completed online, searching the Internet training, operating systems and file management training, and Internet applications training. Results indicate prior educational experience and prior computer training may help distinguish between individuals who complete university online distance education courses and those who do not. 相似文献
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Neil B. Guterman Jiyoung K. Tabone George M. Bryan Catherine A. Taylor Cynthia Napoleon-Hanger Aaron Banman 《Child abuse & neglect》2013
Objective
This study set out to carry out a feasible, real-world, randomized clinical trial to examine the benefits of home-based paraprofessional parent aide services in reducing physical abuse and neglect risk in high-risk parents.Methods
Families were randomly assigned to receive either parent aide plus case management services (n = 73) or case management services only (n = 65), collecting in-home data on physical child abuse and neglect and proximal risk and protective factors, just prior to service initiation, and again after six months of services.Results
Mothers receiving parent aide and case management services reported significant improvements from baseline to six-month follow-up in self-reported indicators of physical child abuse risk, as well as improvements on parental stress, mastery, depression, and anxiety, whereas mothers receiving only case management services did not. The slopes of such observed changes across groups, however, were not found to be statistically significantly different. No discernable improvements were found with regard to indicators of risk for child neglect.Conclusions
As the first randomized clinical trial examining the effectiveness of parent aide services, this study provides the first controlled evidence examining the potential benefits of this service modality. This study suggests promising trends regarding the benefit of parent aide services with respect to physical child abuse risk reduction and related predictors, but evidence does not appear to suggest that such services, as they are presently delivered, reduce child neglect.Practice implications
These findings support the continued use of parent aide services in cases of physical child abuse and also suggest careful consideration of the ways such services may be better configured to extend their impact, particularly with respect to child neglect risk. 相似文献36.
The accurate viscosity measurement of complex fluids is essential for characterizing fluidic behaviors in blood vessels and in microfluidic channels of lab-on-a-chip devices. A microfluidic platform that accurately identifies biophysical properties of blood can be used as a promising tool for the early detections of cardiovascular and microcirculation diseases. In this study, a flow-switching phenomenon depending on hydrodynamic balancing in a microfluidic channel was adopted to conduct viscosity measurement of complex fluids with label-free operation. A microfluidic device for demonstrating this proposed method was designed to have two inlets for supplying the test and reference fluids, two side channels in parallel, and a junction channel connected to the midpoint of the two side channels. According to this proposed method, viscosities of various fluids with different phases (aqueous, oil, and blood) in relation to that of reference fluid were accurately determined by measuring the switching flow-rate ratio between the test and reference fluids, when a reverse flow of the test or reference fluid occurs in the junction channel. An analytical viscosity formula was derived to measure the viscosity of a test fluid in relation to that of the corresponding reference fluid using a discrete circuit model for the microfluidic device. The experimental analysis for evaluating the effects of various parameters on the performance of the proposed method revealed that the fluidic resistance ratio (RJL/RL, fluidic resistance in the junction channel (RJL) to fluidic resistance in the side channel (RL)) strongly affects the measurement accuracy. The microfluidic device with smaller RJL/RL values is helpful to measure accurately the viscosity of the test fluid. The proposed method accurately measured the viscosities of various fluids, including single-phase (Glycerin and plasma) and oil-water phase (oil vs. deionized water) fluids, compared with conventional methods. The proposed method was also successfully applied to measure viscosities of blood with varying hematocrits, chemically fixed RBCS, and channel sizes. Based on these experimental results, the proposed method can be effectively used to measure the viscosities of various fluids easily, without any fluorescent labeling and tedious calibration procedures. 相似文献
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This paper deals with the problem of delay-dependent stability analysis for neural networks with time-varying delays. First, by constructing an augmented Lyapunov–Krasovskii functional and utilizing a generalized free-weighting matrix integral inequality, an improved stability criterion for the concerned network is derived in terms of linear matrix inequalities. Second, by considering a marginal augmented vector and modifying a Lyapunov–Krasovsii functional, a further enhanced stability criterion is presented. Third, a less conservative stability condition in which a relaxed inequality related to activation functions is added is introduced. Finally, three numerical examples are included to illustrate the advantage and validity of the proposed criteria. 相似文献
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Jiyoung Cha 《媒体管理杂志》2017,19(3):240-259
Crowdfunding has become an important funding method for video game developments in the United States. Interestingly, video game crowdfunding projects have significantly lower success rates compared to other product categories. Recognizing this challenge, this study examines factors influencing the success of crowdfunding campaigns for video games. The analysis of 447 crowdfunding campaigns suggests that human capital, geography, media choice, and the intensity of media use influence the success of crowdfunding for video games. 相似文献
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Jungsu Ryu Hyunmin Yang Amy Chan Hyung Kim Kyung Min Kim 《Educational gerontology》2018,44(2-3):128-138
For older adults, participating in leisure activities has psychosocial benefits, increases social interactions, and promotes well-being. Among various leisure activities, pickleball is an activity that fosters positive social interaction and health benefits in older adults. Pickleball is regarded as one of the fastest growing sports in the USA, and it is reported to be popular among people of all ages, especially among older adults. The purpose of this study was to gather demographic details of older pickleball participants and elucidate the psychosocial benefits of playing the sport, such as life satisfaction, optimism, and social integration. To this end, we gathered information from 153 older adults who competed in pickleball tournaments. Multivariate analysis of variance and Hotelling’s T2 test were used to compare the differences that emerged in experiential factors such as life satisfaction, optimism, and social integration among the different demographic characteristics. The results showed that life satisfaction was significantly different among the following three age groups: 50–59 years, 60–69 years, and ≥70 years. Results of Hotelling’s T2 test showed a significant difference in social integration between male and female participants. The test also revealed a significant difference in terms of life satisfaction between retired and employed participants. The results suggest that playing pickleball can be an enriching leisure activity for retirees and may help them cope with the transition that retirement typically entails. 相似文献
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Recently, proponents of interfirm R&D collaboration have emphasized its benefits. We develop a dynamic model of Schumpeterian competition to examine whether such collaboration is indeed beneficial in the long run. We find that interfirm R&D collaboration is more likely to be a losing strategy when partners form alliances mainly to reduce R&D costs. On the other hand, partners collaborating to seek synergy by accessing each other's complementary assets/capabilities are more likely to be successful. Our study suggests that firms should not use strategic alliances merely to reduce R&D costs in a catch-up situation or to avoid head-on competition with rivals. 相似文献