照片呈现图式对旅游幸福感的影响研究——基于存在本真性的中介作用和社交媒体强度的调节作用

分享旅游照片是一种普遍的游后行为,是游客自我景观化呈现的方式之一。但鲜有文献探究旅游照片分享对旅游幸福感的影响。文章以自我知觉理论为指导,旨在探讨游客在社交媒体分享的风景图式和自我景观化图式旅游照片如何通过存在本真性的中介作用影响旅游幸福感(享乐主义和实现主义幸福感),以及社交媒体强度的调节作用。文章设计了3个实验,揭示了内省框架下不同游客照片呈现图式对旅游幸福感的影响机制。结果显示:风景图式会带来更好的享乐主义幸福感,自我景观化图式预示着更高的实现主义幸福感,存在本真性在以上关系中发挥中介作用,社交媒体强度调节上述两条中介路径。文章深化了自我知觉理论,丰富了旅游照片呈现和社交媒体支持对旅游体验影响的相关研究。

社交媒体使用强度对中职生学业成绩的影响:错失焦虑的中介作用

目的:为探究社交媒体使用强度、中职生学业成绩与错失焦虑之间的关系及其内在机制。方法:采用社交媒体使用强度量表、错失焦虑量表对贵州清镇职教城中职院校在校生进行施测。结果:(1)社交媒体使用强度、学业成绩与错失焦虑三者间存在着显著相关关系;(2)社交媒体使用强度对学业成绩具有显著的负向预测作用;(3)错失焦虑在社交媒体使用强度与学业成绩的关系中起着部分中介作用。结论:(1)中职学生学业成绩低于理论中值;(2)社交媒体使用强度、错失焦虑与学业成绩呈显著负相关;(3)错失焦虑在社交媒体使用强度与学业成绩之间起部分中介作用。

煤矿瓦斯治理中水力压裂技术的应用

针对煤矿瓦斯治理中水力压裂技术的应用进行分析,介绍了煤炭瓦斯治理中,水力压裂技术,同时还分析了该技术的应用原理,探讨了水利压裂技术在煤层瓦斯治理中的应用,内容有:提升煤层的透气性、消除煤层瓦斯突出危险性、改善煤体强度、平衡地应力等。最后结合实际案例,阐述了在煤层使用水力压裂技术所达到的效果。希望通过对这些内容的分析,能够为煤矿瓦斯治理中水力压裂技术的应用提供一定帮助。

青少年孤独感与错失恐惧的关系:社交媒体使用强度的中介作用

目的:探讨青少年孤独感、社交媒体使用强度与错失恐惧的关系,以及社交媒体使用强度在二者间的中介作用。方法:采用UCLA孤独量表、错失恐惧量表和社交网络使用强度问卷对628名青少年进行调查。结果:①孤独感与错失恐惧之间呈显著正相关(r=0.46,P<0.01),孤独感与社交媒体使用强度间呈显著正相关(r=0.44,P<0.01),错失恐惧与社交媒体使用强度间呈显著正相关(r=0.23,P<0.01);②孤独感不但对错失恐惧有直接正向预测作用(β=0.42,P<0.01),还能够通过社交媒体使用强度间接对错失恐惧产生影响。结论:社交媒体使用强度在孤独感与错失恐惧间起到中介作用。

Effect of aggressive pH media on peat treated by cement and sodium silicate grout

The effects of aggressive peat nature (pH) on the strength of peat treated by cement and cement-sodium silicate grout were investigated by evaluating the changes in unconfined compressive strength,moisture content,and scanning electron microscopy (SEM) of samples with time in different pH media.The results indicate that peats treated by cement-silicate have higher strength than peats treated by cement,due to an increase in pH value of the media.Furthermore,cement and cement-silicate are highly effective in reducing the moisture content and void ratio of the treated peats.The microstructures of treated peats support the laboratory test results.

Compressive strength and abrasion resistance of concrete containing SiO_2 and CuO nanoparticles in different curing media

In the present study,abrasion resistance and compressive strength of concrete specimens containing SiO2 and CuO nanoparticles in different curing media have been investigated.Portland cement was partially replaced by up to 2.0 wt%of SiO2 and CuO nanoparticles and the mechanical properties of the produced specimens were measured.Increasing the nanoparticles content was found to increase the abrasion resistance of the specimens cured in water and saturated limewater,while this condition was not observed for compressive strength in the both curing media.The enhancement of abrasion resistance was higher for the specimens containing SiO2 nanoparticles in both curing media.Since abrasion resistance and compressive strength of the specimens followed a similar regime as the nanoparticles increased for the specimens cured in saturated limewater,some experimental relationships has been presented to correlate these two properties of concrete for this curing medium.On the whole,it has been concluded that the abrasion resistance of concrete does not only depend on the corresponding compressive strength.