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Despite the dangers associated with drink walking, limited research is currently available regarding the factors which influence individuals to engage in this risky behaviour. This study examined the influence of psychosocial factors upon individuals’ intentions to drink walk across four experimental scenarios (and a control condition). Specifically, a 2 × 2 repeated measures design was utilised in which all of the scenarios incorporated a risky pedestrian crossing situation (i.e., a pedestrian crossing against a red man signal) but differed according to the level of group identity (i.e., low/strangers and high/friends) and conformity (low and high). Individuals were assessed for their intentions to drink walk within each of these different scenarios. Undergraduate students (N = 151), aged 17–30 years, completed a questionnaire. Overall, most of the study's hypotheses were supported with individuals reporting the highest intentions to drink walk when in the presence of friends (i.e., high group identity) and their friends were said to be also crossing against the red man signal (i.e., high conformity). The findings may have significant implications for the design of countermeasures to reduce drink walking. For instance, the current findings would suggest that potentially effective strategies may be to promote resilience to peer influence as well as highlight the negative consequences associated with following the behaviour of other intoxicated pedestrians who are crossing against a red signal. 相似文献
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《国际计算机数学杂志》2012,89(3-4):175-181
This paper studies different heuristics for drawing 2-level hierarchical graphs. Especially, we compare the barycenter and the median heuristics. We show that the barycenter heuristic clearly outperforms the median heuristic, although only the latter has a proved bound for the maximum error done when two vertices are ordered. Moreover, we improve a known heuristic, called the greedy switching, by introducing the barycenter heuristic as a preprocessing phase for it. 相似文献
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《Measurement》2016
In this paper, authors investigate statistical modeling of measured mains Zero Crossing (ZC) non idealities in narrowband powerline communication systems (PLC) using time series approach based on autoregressive moving average model (ARMA). For this purpose, Box Jenkins analysis steps are deployed for detected ZC impulsive variations. Estimated models exhibit a good fit based on R-square metric reaching 90%. This modeling approach is extended to three measurement environment: in home, in lab and rural locations. Obtained models are useful for NB-PLC channel emulator implementation. 相似文献
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Recently, significant efforts have been made to develop highly efficient organic light-emitting diodes (OLEDs) employing reverse intersystem crossing (RISC) owing to its capability of harvesting non-emissive triplet states. Up to date, most of such emitters were small-molecular-weight materials that needed to be doped into a host material. Due to the advantages of ease device fabrication and excellent photoluminescent properties, polymer-based RISC emitters should be developed. In this study, we reported a polyfluorene-based copolymer of poly[{9,9-dioctyl-2,7-divinylene-fluorenylene-alt-co-{2-methoxy-5-(2-ethylhexyloxy)-1,4-phenyene}] (PFOPV), which is a solution-processable, non-doped, high-molecular-weight material exhibiting RISC characteristics. A systematical magneto-electroluminescence study joint by time-resolved spectra revealed that charge transfer (CT) states would be generated between PFO and MEH-PPV components of PFOPV, and triplet CT states can participate in RISC process and contribute significantly to the emission. The PFOPV device shows excellent EL performance with EL efficiency of 12.7 cd/A and EQE of 2.2%, which is about 10–15 times and 2–4 times higher than those of PFO (0.9 cd/A, 0.63%) and MEH-PPV (1.2 cd/A, 1.1%) homopolymer devices, respectively. 相似文献
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The perception of a visual target can be strongly influenced by flanking stimuli. In static displays, performance on the target improves when the distance to the flanking elements increases—presumably because feature pooling and integration vanishes with distance. Here, we studied feature integration with dynamic stimuli. We show that features of single elements presented within a continuous motion stream are integrated largely independent of spatial distance (and orientation). Hence, space-based models of feature integration cannot be extended to dynamic stimuli. We suggest that feature integration is guided by perceptual grouping operations that maintain the identity of perceptual objects over space and time. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献