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With rapid increase in the size of videos online, analysis andprediction of affective impact that video content will haveon viewers has attracted much attention in the community.To solve this challenge several different kinds of informationabout video clips are exploited. Traditional methods normallyfocused on single modality, either audio or visual. Later onsome researchers tried to establish multi-modal schemes andspend a lot of time choosing and extracting features by differ-ent fusion strategy. In this research, we proposed an end-to-end model which can automatically extract features and targetan emotional classification task by integrating audio and vi-sual features together and also adding the temporal character-istics of the video. The experimental study on commonly usedMediaEval 2015 Affective Impact of Movies has shown thismethod’s potential and it is expected that this work could pro-vide some insight for future video emotion recognition fromfeature fusion perspective.

We report a combination of electrocatalysis and photoredox catalysis to perform selective C(sp3)–H arylation/alkylation of alkanes, in which a binary catalytic system based on earth-abundant iron and nickel is applied. Reaction selectivity between two-component C(sp3)–H arylation and three-component C(sp3)–H alkylation is tuned by modulating the applied current and light source. Importantly, an ultra-low anodic potential (~0.23 V vs. Ag/AgCl) is applied in this protocol, thus enabling compatibility with a variety of functional groups (>70 examples). The robustness of the method is further demonstrated on a preparative scale and applied to late-stage diversification of natural products and pharmaceutical derivatives.The combination of electrochemistry and photochemistry in the context of organic synthesis is in its infancy. Here, the authors report selective C(sp3)–H arylation/alkylation of alkanes, using Earth-abundant bimetallic transition metal catalysis, under photo- and electrochemical conditions. [ABSTRACT FROM AUTHOR]

Due to the intrinsic inertness of alkanes, strong oxidative conditions are typically required to enable their C(sp3)−H functionalization. Herein, a paired electrocatalysis strategy was developed by integrating oxidative catalysis with reductive catalysis in one cell without interference, in which earth‐abundant iron and nickel are employed as the anodic and cathodic catalysts, respectively. This approach lowers the previously high oxidation potential required for alkane activation, enabling electrochemical alkane functionalization at the ultra‐low oxidation potential of ≈0.25 V vs. Ag/AgCl under mild conditions. Structurally diverse alkenes, including challenging all‐carbon tetrasubstituted olefins, can be accessed using readily available alkenyl electrophiles. [ABSTRACT FROM AUTHOR]

Altering the carrier concentration and decreasing the lattice thermal conductivity are essential strategies to further improve the intrinsic thermoelectric properties of thermoelectric materials. In this study, the carrier concentration of Cu1.8S0.8Se0.2 blocks was optimized by controlling the degree of cubic digenite phase decomposition during the sintering process. The spontaneous partitioning of the precursor cubic digenite phase in the sintering process introduced many complex multistage nanostructures, including nanodots, local lattice distortions, nano-twins, and nano-inclusions. These multistage nanostructures or nano-defects are mainly in the size range of 1–20 nm, strongly scattering phonons (with widely ranging wavelengths and mean free paths) and significantly reducing the lattice thermal conductivity of the sintered block. The optimized power factor and reduced lattice thermal conductivity increased the figure of merit of the sintered Cu1.8S0.8Se0.2 block (figure of merit = 0.76 at 450 °C) by 90% from that of pure Cu1.8S (figure of merit = 0.4 at 450 °C) thermoelectric material. The high temperatures induced spontaneous partitioning of the cubic digenite phase, ensuring stability and coherence between the matrix and introduced nanostructures. The strategy of introducing nanostructures through spontaneous partitioning of the precursor phase is not only applicable to chalcogenide thermoelectric materials but also to other thermoelectric materials with inherent high-temperature phase transformations. [ABSTRACT FROM AUTHOR]