40 research outputs found
Probing the Function of Solid Nanoparticle Structure under Boundary Lubrication
No full textUnderstanding the fundamental function of solid nanoparticle structure on boundary lubrication is of great significance. Here we prepared a series of solid naoparticles including lamellar carbon and molybdenum disulfide (MoS2), spherical MoS2 and carbon, graphene-like C-MoS2 composite, and graphene quantum dots (GQDs), and investigated their tribological properties and mechanism under boundary lubrication in detail. The experimental characterization and analysis found that the spherical nanoparticles can reduce friction and wear by 40% and 80%, depending on the "third body" composed of these nanoparticles and the friction induced nano-onion debris in the contact area and an easily shearing film formed by the exfoliated nanoslices on the sliding surfaces. Smaller nanosize GQDs allow the friction and wear to be reduced by up to 60% and 91%, which is attributed to the synergistic effect of a densely protective film on the sliding surfaces and the graphene-like debris in the contact area
Distributed human computation framework for linked data co-reference resolution
No full textDistributed Human Computation (DHC) is a technique used to solve computational problems by incorporating the collaborative effort of a large number of humans. It is also a solution to AI-complete problems such as natural language processing. The Semantic Web with its root in AI is envisioned to be a decentralised world-wide information space for sharing machine-readable data with minimal integration costs. There are many research problems in the Semantic Web that are considered as AI-complete problems. An example is co-reference resolution, which involves determining whether different URIs refer to the same entity. This is considered to be a significant hurdle to overcome in the realisation of large-scale Semantic Web applications. In this paper, we propose a framework for building a DHC system on top of the Linked Data Cloud to solve various computational problems. To demonstrate the concept, we are focusing on handling the co-reference resolution in the Semantic Web when integrating distributed datasets. The traditional way to solve this problem is to design machine-learning algorithms. However, they are often computationally expensive, error-prone and do not scale. We designed a DHC system named iamResearcher, which solves the scientific publication author identity co-reference problem when integrating distributed bibliographic datasets. In our system, we aggregated 6 million bibliographic data from various publication repositories. Users can sign up to the system to audit and align their own publications, thus solving the co-reference problem in a distributed manner. The aggregated results are published to the Linked Data Cloud
Flexible, wearable biosensors for digital health
No full textFlexible and stretchable biosensors have the advantage of enhanced signal validity and patient comfort during physiological signal sensing and biomolecular analysis, crucial for disease diagnosis, treatment and health management. Their lightness, softness and excellent mechanical properties enable effective skin-device interface coupling and skin safety profiles, realizing multi-functional, intelligent real-time sensing. In this review, the basic sensing principles of biosensor systems and their applications are discussed. Moreover, the potential applications and prospective progress of these biosensors are further prospected. Flexible, wearable biosensors have the potential to realize continuous and long-term health monitoring in clinical and daily health care.ChemE/Product and Process Engineerin
Author Name Disambiguation in Technology Trend Analysis Using SVM and Random Forests and Novel Topic Based Features
No full textA nine month progress report on investigation of social network and bibliometric network
No full textStudies on the Structure and Reduction Property of Metal-Containing Activated Carbon Fiber
No full textAbstractIn order to improve the reduction ability and capacity of ACF, some metal-containing ACF (Me-ACF) were prepared. Their structures and reduction properties were investigated at the same time. On the basis of experimental results, a redox mechanism was proposed.</jats:p
