Dalian University of Technology

About: Dalian University of Technology is a education organization based out in Dalian, China. It is known for research contribution in the topics: Catalysis & Finite element method. The organization has 60890 authors who have published 71921 publications receiving 1188356 citations. The organization is also known as: Dàlián Lǐgōng Dàxué.

Superhierarchical Cobalt-Embedded Nitrogen-Doped Porous Carbon Nanosheets as Two-in-One Hosts for High-Performance Lithium–Sulfur Batteries

Abstract: Lithium-sulfur (Li-S) batteries, based on the redox reaction between elemental sulfur and lithium metal, have attracted great interest because of their inherently high theoretical energy density. However, the severe polysulfide shuttle effect and sluggish reaction kinetics in sulfur cathodes, as well as dendrite growth in lithium-metal anodes are great obstacles for their practical application. Herein, a two-in-one approach with superhierarchical cobalt-embedded nitrogen-doped porous carbon nanosheets (Co/N-PCNSs) as stable hosts for both elemental sulfur and metallic lithium to improve their performance simultaneously is reported. Experimental and theoretical results reveal that stable Co nanoparticles, elaborately encapsulated by N-doped graphitic carbon, can work synergistically with N heteroatoms to reserve the soluble polysulfides and promote the redox reaction kinetics of sulfur cathodes. Moreover, the high-surface-area pore structure and the Co-enhanced lithiophilic N heteroatoms in Co/N-PCNSs can regulate metallic lithium plating and successfully suppress lithium dendrite growth in the anodes. As a result, a full lithium-sulfur cell constructed with Co/N-PCNSs as two-in-one hosts demonstrates excellent capacity retention with stable Coulombic efficiency.

Introduction to: Special Issue on Smartphone-Based Interactive Technologies, Systems, and Applications

Abstract: Smartphones (or smart mobile devices) have now truly become a ubiquitous computing device, a computer that the late Mark Weiser envisioned in his ubiquitous computing manifesto. Many applications that could only have been dreamed of have now become a reality due to the powerful computing resources, display, sensing, and networking capabilities of smartphones. With applications ranging from productivity, entertainment, enterprise, social networking, communications, and mixed reality, the smartphone is the “swiss army knife” of it all. However, there are still many untapped elements and unlimited possibilities: Smartphones can provide next-generation interactive systems with more intuitive and intelligent technologies and applications that have not been explored much in detail, especially through the use of mobile computing, sensing, and networking capabilities. Making uses of cyber and physical data accessible by smartphones at a location, new cyber-physical interactive technologies and systems can be designed and integrated to create novel functionalities, methods, and intelligences to interact with humans and environments for better social experiences, as well as more intelligent services and creative applications, such as recommendation systems, advertising platforms, and gaming applications that are interactive to the user smartphones on the spot in a physical environment and situation. This special issue of ACM Transactions on Multimedia Computing, Communications and Applications (TOMM) provides an opportunity to attract and bring together mobile computing, cyber-physical systems, ubiquitous computing, social computing, wireless networking, and multimedia communications researchers along with user interface designers and practitioners with diverse backgrounds to contribute articles on theoretical, practical, and methodological issues for next-generation interactive technologies, systems, and applications using smartphones. There were a record number of submissions (38 in total) for this special issue of ACM TOMM. Twelve high-quality, creative, and interesting articles were selected and accepted, which discuss various challenges and emerging directions of smartphone-based interactive technologies, systems, and applications. This special issue starts off with 5 articles concerning the technologies and applications for better uses and creations of visual/3D images and augmented reality (AR) in the smartphones The first article by Zhu et al. is titled “ShotVis: Smartphone-Based Visualization of OCR Information from Images” and it presents an approach to help smartphone users to easily read and organize text-based data captured by the smartphone’s camera. The captured images with textual data are first processed by optical character recognition, and the recognized information is readable through various intuitive visualization techniques selected and refined by smartphone users through on-screen interactions.

Green supply chain management in leading manufacturers: Case studies in Japanese large companies

Abstract: Purpose – This paper aims to introduce environmental, green supply chain management (GSCM), experiences of large Japanese manufacturers.Design/methodology/approach – Using an investigation of nine large Japanese manufacturers, this paper examines GSCM implementation as well as their performance improvement and drivers among these manufacturers.Findings – A comparative analysis shows that Japanese large manufacturers implement one key GSCM practice, internal environmental management, much more actively and effectively than Chinese manufacturers. The sample of Japanese manufacturers implement four other GSCM practices – green purchasing, customer cooperation with environmental considerations, eco‐design and investment recovery – at similar levels when compared to Chinese manufacturers. Even at the initial stage of GSCM implementation, large Japanese companies have made significant improvements for environmental and financial performance but not for operational performance.Research limitations/implications –...