Surface modification of fluoropolymers for the improvement of adhesion: O2-CF4-Ar radio frequency plasma modification of poly (tetrafluoroethylene)

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Soft-Defined Heterogeneous Vehicular Network: Architecture and Challenges

Heterogeneous Vehicular NETworks (HetVNETs) can meet various quality-of-service (QoS) requirements for intelligent transport system (ITS) services by integrating different access networks coherently. However, the current network architecture for HetVNET cannot efficiently deal with the increasing demands of rapidly changing network landscape. Thanks to the centralization and flexibility of the cloud radio access network (Cloud-RAN), soft-defined networking (SDN) can conveniently be applied to support the dynamic nature of future HetVNET functions and various applications while reducing the operating costs. In this paper, we first propose the multi-layer Cloud RAN architecture for implementing the new network, where the multi-domain resources can be exploited as needed for vehicle users. Then, the high-level design of soft-defined HetVNET is presented in detail. Finally, we briefly discuss key challenges and solutions for this new network, corroborating its feasibility in the emerging fifth-generation (5G) era

#mytweet via Instagram: Exploring User Behaviour across Multiple Social Networks

We study how users of multiple online social networks (OSNs) employ and share information by studying a common user pool that use six OSNs - Flickr, Google+, Instagram, Tumblr, Twitter, and YouTube. We analyze the temporal and topical signature of users' sharing behaviour, showing how they exhibit distinct behaviorial patterns on different networks. We also examine cross-sharing (i.e., the act of user broadcasting their activity to multiple OSNs near-simultaneously), a previously-unstudied behaviour and demonstrate how certain OSNs play the roles of originating source and destination sinks.Comment: IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining, 2015. This is the pre-peer reviewed version and the final version is available at http://wing.comp.nus.edu.sg/publications/2015/lim-et-al-15.pd

Internet of Things Cloud: Architecture and Implementation

The Internet of Things (IoT), which enables common objects to be intelligent and interactive, is considered the next evolution of the Internet. Its pervasiveness and abilities to collect and analyze data which can be converted into information have motivated a plethora of IoT applications. For the successful deployment and management of these applications, cloud computing techniques are indispensable since they provide high computational capabilities as well as large storage capacity. This paper aims at providing insights about the architecture, implementation and performance of the IoT cloud. Several potential application scenarios of IoT cloud are studied, and an architecture is discussed regarding the functionality of each component. Moreover, the implementation details of the IoT cloud are presented along with the services that it offers. The main contributions of this paper lie in the combination of the Hypertext Transfer Protocol (HTTP) and Message Queuing Telemetry Transport (MQTT) servers to offer IoT services in the architecture of the IoT cloud with various techniques to guarantee high performance. Finally, experimental results are given in order to demonstrate the service capabilities of the IoT cloud under certain conditions.Comment: 19pages, 4figures, IEEE Communications Magazin

Diversity and Innovation: Progress and Exploration of Domestic Art Movies in 2016

One defining feature of domestic movies in 2016 is the outstanding performance made by art movies. In general, these art movies improved the overall quality of Chinese movies and the aesthetic appreciation of Chinese viewers. While highlighting the values of art and thought amid the commercial or entertainment movies, the art movies aroused public concern for domestic movies. Domestic art movies in 2016 are characterized by a close link between their art form and avant–garde style and their realist approach, affinity to the people and thought–provoking insight. Such characteristics enabled them to make new contributions to the development of realism. Some exhibited the producers’ relentless exploration and pursuit of innovation, vividly demonstrating the diversity of contemporary art movies. For example, some delivered an impressive modern interpretation of traditional Chinese aesthetic philosophy–"the extraordinary lies in the ordinary;"some had a novel camera expression and unique space–time composition; some established an in–depth connection between laughter and critical thinking by combining comic and tragic elements; some rendered innovative presentations by integrating modern style with ethnic culture; and some adopted ideographic means to enhance the significance of art movies. At present, however, Chinese art movies still lack a grand spiritual vision, with their themes to be further enriched and their concepts and expressions to be better integrated. Domestic art movies need to be endowed with more profound significance

Lattice-matched (In,Ga)P buffer layers for ZnSe based visible emitters

Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.Includes bibliographical references (leaves 69-72).by Kan Lu.M.S