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Social and Behavioral Sciences Commons

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University of Wollongong

Science and Technology Studies

Networks

2016

Articles 1 - 5 of 5

Full-Text Articles in Social and Behavioral Sciences

Mitigating Tap Changer Limit Cycles In Modern Electricity Networks Embedded With Local Generation Units, Dothinka Ranamuka Rallage, Ashish P. Agalgaonkar, Kashem M. Muttaqi, Md Jan E Alam Jan 2016

Mitigating Tap Changer Limit Cycles In Modern Electricity Networks Embedded With Local Generation Units, Dothinka Ranamuka Rallage, Ashish P. Agalgaonkar, Kashem M. Muttaqi, Md Jan E Alam

Faculty of Engineering and Information Sciences - Papers: Part A

Cascaded on-load tap changers (OLTCs) are widely used for coarse control of voltages in largely interconnected elec- tric power systems. There could be interactions between load dynamics and OLTC control under certain system operating conditions which may lead to the OLTC limit cycle phenomena, thereby resulting into long-term voltage oscillations in the system. In recent years, renewable and nonrenewable local generation (LG) units have been getting interconnected in modern power systems. The existence of OLTC limit cycles in the presence of LG has not been addressed in the literature in greater details. In this paper, the OLTC limit cycle phenomenon, …


A Novel Queue Management Policy For Delay-Tolerant Networks, Saeid Iranmanesh Jan 2016

A Novel Queue Management Policy For Delay-Tolerant Networks, Saeid Iranmanesh

Faculty of Engineering and Information Sciences - Papers: Part A

Delay-tolerant networks (DTNs) have attracted increasing attention from governments, academia and industries in recent years. They are designed to provide a communication channel that exploits the inherent mobility of trams, buses and cars. However, the resulting highly dynamic network suffers from frequent disconnections, thereby making node-to-node communications extremely challenging. Researchers have thus proposed many routing/forwarding strategies in order to achieve high delivery ratios and/or low latencies and/or low overheads. Their main idea is to have nodes store and carry information bundles until a forwarding opportunity arises. This, however, creates the following problems. Nodes may have short contacts and/or insufficient buffer …


Action Recognition Based On Joint Trajectory Maps Using Convolutional Neural Networks, Pichao Wang, Zhaoyang Li, Yonghong Hou, Wanqing Li Jan 2016

Action Recognition Based On Joint Trajectory Maps Using Convolutional Neural Networks, Pichao Wang, Zhaoyang Li, Yonghong Hou, Wanqing Li

Faculty of Engineering and Information Sciences - Papers: Part A

Recently, Convolutional Neural Networks (ConvNets) have shown promising performances in many computer vision tasks, especially image-based recognition. How to effectively use ConvNets for video-based recognition is still an open problem. In this paper, we propose a compact, effective yet simple method to encode spatiotemporal information carried in 3D skeleton sequences into multiple 2D images, referred to as Joint Trajectory Maps (JTM), and ConvNets are adopted to exploit the discriminative features for realtime human action recognition. The proposed method has been evaluated on three public benchmarks, i.e., MSRC-12 Kinect gesture dataset (MSRC-12), G3D dataset and UTD multimodal human action dataset (UTD-MHAD) …


Interaction Prediction Between Groundwater And Quarry Extension Using Discrete Choice Models And Artificial Neural Networks, Johan Barthelemy, Timoteo Carletti, Louise Collier, Vincent Hallet, Marie Moriame, Annick Sartenear Jan 2016

Interaction Prediction Between Groundwater And Quarry Extension Using Discrete Choice Models And Artificial Neural Networks, Johan Barthelemy, Timoteo Carletti, Louise Collier, Vincent Hallet, Marie Moriame, Annick Sartenear

Faculty of Engineering and Information Sciences - Papers: Part A

Groundwater and rock are intensively exploited in the world. When a quarry is deepened the water table of the exploited geological formation might be reached. A dewatering system is therefore installed so that the quarry activities can continue, possibly impacting the nearby water catchments. In order to recommend an adequate feasibility study before deepening a quarry, we propose two interaction indices between extractive activity and groundwater resources based on hazard and vulnerability parameters used in the assessment of natural hazards. The levels of each index (low, medium, high, very high) correspond to the potential impact of the quarry on the …


A Review Of Protection Systems For Distribution Networks Embedded With Renewable Generation, Joel Kennedy, Philip Ciufo, Ashish P. Agalgaonkar Jan 2016

A Review Of Protection Systems For Distribution Networks Embedded With Renewable Generation, Joel Kennedy, Philip Ciufo, Ashish P. Agalgaonkar

Faculty of Engineering and Information Sciences - Papers: Part A

The rapid growth of grid-connected embedded generation is changing the operational characteristics of power distribution networks. Amongst a range of issues being reported in the research, the effect of these changes on so-called 'traditional protection systems' has not gone without attention. Looking to the future, the possibility of microgrid systems and deliberate islanding of sections of the network will require highly flexible distribution management systems and a re-design of protection strategies. This paper explores the envisaged protection issues concerned with large penetrations of embedded generation in distribution networks extending into auto-reclosure and protection device coordination. A critical review of recently …