Rewetting Intensity Influences Soil Respiration and Nitrogen Availability

It is not clear how different rewetting intensities (rapid, slow or partial rewetting) influence soil respiration and nitrogen (N) availability. Moist soil left unamended or amended with low C/N faba bean residue and incubated for 21 days was dried to rapid > partial rewetting. From day 4 onwards, moisture treatments differed little in respiration rate. In unamended soils, the rewetting intensity had little effect on available N. But 1 day after rewetting, MBN was lowest in CM, and twofold, fourfold and tenfold higher with rapid, slow and partial rewetting, respectively. In amended soils 1 day after rewetting, available N was about twofold higher in CM and with rapid than slow and partial rewetting, while MBN was about twofold higher with CM and rapid rewetting than slow and partial rewetting. Treatments differed little in available N and MBN 7 and 14 days after rewetting. Slow rewetting induced greater soil respiration and microbial N uptake than rapid rewetting. But effects were short-lived

Social Media Usage for Computing Education : The Effect of The Strength and Group Communication on Perceived Learning Outcome

Social media has become an important platform where users share, comment, discuss, communicate, interact, and play games. Aside from using social media for personal, social, and business purposes, the use of social media has gained attention, particularly for collaborative learning in the educational sector. This paper examines the role of social media in computing education based on the use of WhatsApp social media group. Additionally, the study explores how social media usage by students influences their perceived learning outcomes. Given these aims, the study formulated four research hypotheses and tested using Partial Least Square Structural Equation Modelling. With the participants of three hundred and thirteen (n=313) students, the study found a positive relationship between social media usage for computing education and perceived learning outcomes. In addition, the study found a linear relationship between communication in- group and perceived learning outcomes. Finally, the study revealed that social media positively relates to tie strength, and that tie strength influences in-group communication.peerReviewe

Social media usage for computing education:the effect of tie strength and group communication on perceived learning outcome

Abstract Social media has become an important platform where users share, comment, discuss, communicate, interact, and play games. Aside from using social media for personal, social, and business purposes, the use of social media has gained attention, particularly for collaborative learning in the educational sector. This paper examines the role of social media in computing education based on the use of WhatsApp social media group. Additionally, the study explores how social media usage by students influences their perceived learning outcomes. Given these aims, the study formulated four research hypotheses and tested using Partial Least Square Structural Equation Modelling. With the participants of three hundred and thirteen (n=313) students, the study found a positive relationship between social media usage for computing education and perceived learning outcomes. In addition, the study found a linear relationship between communication ingroup and perceived learning outcomes. Finally, the study revealed that social media positively relates to tie strength, and that tie strength influences in-group communication