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Based on a 4-year longitudinal analysis of social media and mobile phone users in a Midwest US market, this study differentiates news content engagement from news medium engagement, proposes four levels of news engagement, and compares how social media and mobile media differ in their effects on engagement in news content and news medium between the general population and college students. The analysis shows a steady decline in the interest in political news but not in other types of news. Total news consumption time gradually declined among the general population, and the gap between general population and students diminished over time. Social media use positively predicts total news consumption time. Predictors of news engagement differ for different levels of news engagement.

This research evaluates the operational heating and cooling energy consumption of cross-laminated timber (CLT) office buildings in China. The evaluations involve a comparison of the energy consumption of a reference RC structure and CLT system office buildings. Computational simulation results are based on IES-VE 2019 and show that the estimated heating energy saving ratio of CLT buildings in Harbin, Beijing, Shanghai, and Kunming to the reference structure are 11.97%, 22.11%, 30.94%, and 23.30% respectively. However, the CLT buildings consume more energy for cooling in the summer. The results of the research show significantly higher heating energy reductions for CLT buildings in the Cold Region and Severe Cold Regions of China. Thus, the application of the CLT system is better suited to northern China than southern China. The results of the research can be used in further assessment of the use of CLT systems in different climatic regions in China.

This survey examined undecided voters' local and national news media use in relation to political efficacy. Results suggest that online media use was the strongest predictor for political efficacy, creating a self-selection polarized trend of political use of media. Local election efficacy was higher than national election efficacy. Over one half of the first-time voters and general population voters believed their vote could change the outcome of the election. Social media only had an impact on first-time voters' political efficacy. No liberals could be found in undecided voters among the general population voters. Television was the most important medium for campaign information for the