The migration of digital avionics data buses to low cost optical avionics data networks (the LOADNET project)

Visual Sensor Network (VSN) is a network of distributed battery-powered low-cost cameras and CMOS image sensors, each with the capability of capturing, processing, sending, and receiving images. VSN applications include remote monitoring, Security, elderly assistance, Visual Ubiquity, home monitoring, tracking. The highly sensitive nature of images makes security and privacy in VSNs even more important than in most other sensor and data networks. However, the direct use of security techniques developed for scalar WSN will not be suitable for VSN due to its resource constraint. Hence light weight security mechanisms need to be explored. In this chapter the challenging security issues at various layers in VSN are addressed. It also fosters discussion on privacy protection techniques like subjective privacy, Video masking techniques and identifies recent trends in VSN security and privacy. A discussion of open research issues concludes this chapter.

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Planning for a Prosumer Future: The Case of Central Park, Sydney

Urban Planning ◽

10.17645/up.v4i1.1746 ◽

2019 ◽

Vol 4 (1) ◽

pp. 172-186 ◽

Cited By ~ 3

Author(s):

Lisa McLean ◽

Rob Roggema

Keyword(s):

Best Practice ◽

Low Cost ◽

Critical Role ◽

Environmental Benefits ◽

Data Networks ◽

Financial Benefit ◽

Central Park ◽

University Of Technology ◽

Cost Planning ◽

The Many

Rapid convergence of utility and mobility solutions enabled by data and the Internet of Things is future-proofing economies around the world, delivering liveability, sustainability and resilience, and importantly decreases pressure on utility bills and infrastructure costs. Australians cannot miss out on the many benefits brought to families and businesses by the digitisation of infrastructure and services are bringing—not just reduced household bills but also the ability to generate income as prosumers, not consumers. Localised sustainable Next-Gen infrastructure and services are growing from within communities, creating a new class of consumer—the prosumer: where customers are more than consumers but also producers. Prosumers have the ability to generate free energy from the sun at home or office and sell the excess, recycle water and waste reaping the financial benefit, avoid the second largest household expense of a car by sharing mobility, and access shared data networks to plug in and play at little cost. Planning frameworks play a critical role in enabling a new utility prosumer future in Australia and reform of planning gateway processes is essential. This article highlights Sydney’s Central Park as a best practice urban infill development showcasing how the flows of water and energy are organised to provide enhanced sustainability, liveability and resilience for the local and neighbouring communities. Central Park proves the benefits of taking a precinct approach to utility and mobility services. It shows how these benefits can grow and be exported to neighbouring buildings and existing communities, in this case University of Technology driving inclusion and affordability. Central Park also demonstrates the opportunities to drive deeper socio/environmental benefits by enabling prosumer services through low-cost access to utility services and circular resource flows. Importantly, this article demonstrates that Central Park’s phenomenal sustainability benefits can be replicated at scale in land release communities, but planning reform is required.

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Visual Sensor Networks

Advances in Digital Crime, Forensics, and Cyber Terrorism - Combating Security Breaches and Criminal Activity in the Digital Sphere ◽

10.4018/978-1-5225-0193-0.ch016 ◽

2016 ◽

pp. 263-282

Author(s):

Suseela G ◽

Asnath Victy Phamila Y

Keyword(s):

Low Cost ◽

Home Monitoring ◽

Image Sensors ◽

Security And Privacy ◽

Data Networks ◽

Visual Sensor ◽

Visual Sensor Network ◽

Security Issues ◽

Cmos Image Sensors ◽

Recent Trends

Visual Sensor Network (VSN) is a network of distributed battery-powered low-cost cameras and CMOS image sensors, each with the capability of capturing, processing, sending, and receiving images. VSN applications include remote monitoring, Security, elderly assistance, Visual Ubiquity, home monitoring, tracking. The highly sensitive nature of images makes security and privacy in VSNs even more important than in most other sensor and data networks. However, the direct use of security techniques developed for scalar WSN will not be suitable for VSN due to its resource constraint. Hence light weight security mechanisms need to be explored. In this chapter the challenging security issues at various layers in VSN are addressed. It also fosters discussion on privacy protection techniques like subjective privacy, Video masking techniques and identifies recent trends in VSN security and privacy. A discussion of open research issues concludes this chapter.

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Performance of VoIP in Wired-Cum-Wireless Ethernet Network

International Journal of Interdisciplinary Telecommunications and Networking ◽

10.4018/jitn.2012100101 ◽

2012 ◽

Vol 4 (4) ◽

pp. 1-25

Author(s):

Nurul I. Sarkar ◽

Kashif Nisar

Keyword(s):

System Performance ◽

Low Cost ◽

Local Area ◽

Data Networks ◽

Data Traffic ◽

Home Office ◽

Traffic Characteristics ◽

Packet Arrival ◽

Campus Networks ◽

The Voice

The Voice over Internet Protocol (VoIP) is a rapidly growing technology that enables transport of voice over data networks such as Ethernet Local Area Networks (LANs). This growth is due to the integration of voice and data traffic over the existing network infrastructure, low cost, and improved network management offered by the technology. This paper reports on the performance of VoIP traffic characteristics in a wired-cum-wireless Ethernet LAN. The effect of increasing the number of VoIP wireless clients, different voice codec schemes, and packet arrival distributions on system performance is investigated. Through various simulation experiments under realistic network scenarios, such as Small Office Home Office (SOHO) and campus networks, this paper provides an insight into the performance of VoIP over Ethernet LANs. Simulation results show that VoIP clients and voice codec schemes have significant effect on system performance. The authors preformed OPNET-based simulations to validate their experiments.

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Telecontrol system based on the Smith predictor using the TCP/IP protocol

Robotica ◽

10.1017/s0263574702004812 ◽

2003 ◽

Vol 21 (3) ◽

pp. 303-312 ◽

Cited By ~ 2

Author(s):

Luis A. Baigorria ◽

José F. Postigo ◽

Vicente A. Mut ◽

Ricardo O. Carelli

Keyword(s):

Control Systems ◽

Software Package ◽

Low Cost ◽

Smith Predictor ◽

Data Networks ◽

Control Applications ◽

Client Server ◽

Client Software ◽

Real Process ◽

Ethernet Network

In this paper, development and implementation are presented of a client software package for remote process control. The proposed software is based on a client-server model under an Intranet architecture. The architecture is proposed for a telecontrol system of a real process, which includes the possibility of integrating I/O devices with data networks based on open protocols such as TCP/IP. This protocol allows the implementation of control systems using a low-cost alternative. Also, the Smith predictor is revised for remote control applications over an Ethernet network. Some experiences on a laboratory pasteurization plant are addressed to show both developed controllers and architecture performance.

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REAL-TIME ASSIMILATION USING A DENSE ARRAY OF DIRECTIONAL WAVE OBSERVATIONS

Coastal Engineering Proceedings ◽

10.9753/icce.v36.waves.6 ◽

2018 ◽

pp. 6

Author(s):

Pieter Bart Smit ◽

Tim Janssen ◽

Wheeler Gans ◽

Cameron Dunning

Keyword(s):

Low Cost ◽

Model Performance ◽

Data Networks ◽

Large Numbers ◽

Independent Observations ◽

Directional Wave ◽

Wave Conditions ◽

Wave Models ◽

Solar Powered ◽

Buoy Data

Wave conditions along our coastlines are monitored using networks of wave buoys. Augmented with regional wave now- and hind-casts from operational wave models, these data networks provide detailed regional information of wave conditions providing vital updates of wave conditions for maritime, engineering, recreational and scientific purposes. Currently, the observational networks are mostly used to initiate models and assess model performance, but are usually not directly integrated into the modeling system. Recent work by Crosby et al. (2017) explores the integration of buoy data into models and shows that data assimilation of buoy observations into models can improve predictions and wave hindcasts. The results suggest that assimilation of dense observational networks results in significant and important improvements in model performance. In the current work we leverage these modeling advances with the recent development of low-cost directional wave buoys (such as the Spoondrift Spotter, www.spoondrift.co). The use of low-cost and solar powered instruments allows for much denser long-term arrays of instruments than was previously possible. The availability of large numbers of independent observations, in turn, can provide excellent constrains on models and model boundary conditions.

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Decomposition of the metastable beta titanium alloy Ti-15-3

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100075117 ◽

1983 ◽

Vol 41 ◽

pp. 264-265

Author(s):

Y. L. Chen ◽

S. Fujlshiro

Keyword(s):

Low Cost ◽

High Strength ◽

Alpha Phase ◽

Thick Sheet ◽

Omega Phase ◽

Beta Titanium Alloy ◽

Beta Titanium ◽

Beta Matrix ◽

Metastable Beta ◽

Very High

Metastable beta titanium alloys have been known to have numerous advantages such as cold formability, high strength, good fracture resistance, deep hardenability, and cost effectiveness. Very high strength is obtainable by precipitation of the hexagonal alpha phase in a bcc beta matrix in these alloys. Precipitation hardening in the metastable beta alloys may also result from the formation of transition phases such as omega phase. Ti-15-3 (Ti-15V- 3Cr-3Al-3Sn) has been developed recently by TIMET and USAF for low cost sheet metal applications. The purpose of the present study was to examine the aging characteristics in this alloy.The composition of the as-received material is: 14.7 V, 3.14 Cr, 3.05 Al, 2.26 Sn, and 0.145 Fe. The beta transus temperature as determined by optical metallographic method was about 770°C. Specimen coupons were prepared from a mill-annealed 1.2 mm thick sheet, and solution treated at 827°C for 2 hr in argon, then water quenched. Aging was also done in argon at temperatures ranging from 316 to 616°C for various times.

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Chromic Acid Etching of Polyethylene

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100070801 ◽

1973 ◽

Vol 31 ◽

pp. 72-73

Author(s):

J. D. Muzzy ◽

R. D. Hester ◽

J. L. Hubbard

Keyword(s):

Chromic Acid ◽

Low Cost ◽

Acid Etching ◽

Crystalline Morphology ◽

Bulk Specimen ◽

Morphological Studies ◽

Perfect Form ◽

Molecular Length ◽

Lamellar Texture ◽

Cost Studies

Polyethylene is one of the most important plastics produced today because of its good physical properties, ease of fabrication and low cost. Studies to improve the properties of polyethylene are leading to an understanding of its crystalline morphology. Polyethylene crystallized by evaporation from dilute solutions consists of thin crystals called lamellae. The polyethylene molecules are parallel to the thickness of the lamellae and are folded since the thickness of the lamellae is much less than the molecular length. This lamellar texture persists in less perfect form in polyethylene crystallized from the melt.Morphological studies of melt crystallized polyethylene have been limited due to the difficulty of isolating the microstructure from the bulk specimen without destroying or deforming it.

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Glass Knife Geometry as Seen by the SEM

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100066322 ◽

1971 ◽

Vol 29 ◽

pp. 454-455

Author(s):

J. Temple Black

Keyword(s):

Low Cost ◽

Amorphous Material ◽

Stress Concentrations ◽

Basic Tool ◽

Tool Materials ◽

Optical Inspection ◽

Surface Flaws ◽

Slip Planes ◽

Glass Knife ◽

Diamond Knife

In ultramicrotomy, the two basic tool materials are glass and diamond. Glass because of its low cost and ease of manufacture of the knife itself is still widely used despite the superiority of diamond knives in many applications. Both kinds of knives produce plastic deformation in the microtomed section due to the nature of the cutting process and microscopic chips in the edge of the knife. Because glass has no well defined slip planes in its structure (it's an amorphous material), it is very strong and essentially never fails in compression. However, surface flaws produce stress concentrations which reduce the strength of glass to 10,000 to 20,000 psi from its theoretical or flaw free values of 1 to 2 million psi. While the microchips in the edge of the glass or diamond knife are generally too small to be observed in the SEM, the second common type of defect can be identified. This is the striations (also termed the check marks or feathers) which are always present over the entire edge of a glass knife regardless of whether or not they are visable under optical inspection. These steps in the cutting edge can be observed in the SEM by proper preparation of carefully broken knives and orientation of the knife, with respect to the scanning beam.

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