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In the e-commerce context, are we persuaded more by a product recommendation that matches our preferences (content filtering) or by one that is endorsed by others like us (collaborative filtering)? We addressed this question by conceptualizing these two filtering types as cues that trigger cognitive heuristics (mental shortcuts), following the heuristic-systematic model in social psychology. In addition, we investigated whether the degree to which the recommendation matches user preferences (or other users' endorsements) provides an argument for systematic processing, especially for those who need deeper insights into the accuracy of the algorithm, particularly in product categories where quality is subjective. Data from a 2 (algorithm type: content vs. collaborative filtering) x 3 (percentage match: low vs. medium vs. high) x 2 (product category: search vs. experience) + 2 (control: search and experience) between-subjects experiment (N = 469) reveal that for experience products, consumers prefer content-based filtering with higher percentage matches, because it is perceived as offering more transparency. This is especially true for individuals with high need for cognition. For search products, however, collaborative filtering leads to more positive evaluations by triggering the "bandwagon effect." These findings have implications for theory pertaining to the use of artificial intelligence in strategic communications and design of algorithms for e-commerce recommender systems. [ABSTRACT FROM AUTHOR]

The development of a stable catalyst with excellent catalytic performance for the oxygen evolution reaction (OER) in alkaline environments is a key reaction in various electrochemical technologies. In this work, single-atom catalysts (SACs) systems in which scandium (Sc), a rare earth metal, with different N/C coordination environments (ScNxC3−x@SACs and ScNxC4−x@SACs of Sc) were systematically studied with the help of density functional theory (DFT) calculations. The results of the structural thermodynamic stability analysis indicated that the ScNxC3−x@SACs and ScNxC4−x@SACs systems are more stable with increasing N atom doping concentration around Sc. The ScN3, ScN3C, and ScN4 with better stability were selected as the objects of subsequent research. However, ScN3 and ScN4 form Sc(OH)2N3 and Sc(OH)2N4 structures with double-hydroxyl groups as ligands because of the strong adsorption of OH species, whereas the strong adsorption of OH species by ScN3C causes structural instability. Here, the overpotential (η) of Sc(OH)2N3 was 1.03 V; Sc(OH)2N4 had two reaction paths and the η of path 1 was 0.80 V, which was 0.30 V lower than that of path 2. Therefore, Sc(OH)2N4 can be used as a stable and promising OER catalyst with easy desorption of O2 and good cycle performance. The hydroxyl ligand modification of Sc-NxC3−x@SACs and Sc-NxC4−x@SACs provides a method for studying the catalytic performance of other rare earth elements. [ABSTRACT FROM AUTHOR]