Taki, Waldemar Januszczak, Michael Horne, John Dugdale, Michael Prescott, John Coleman, Christopher Middleton, Perfide Albion, Barbara Hall, Alan Hedley, John Davison, Jon Swain, F Dickinson, John Peter, Mark Reason, Lesley White, Ulrika Jonsson, Christopher Somerville, Susan d'Arcy, Nick Rufford, Dr Robert Carpenter, Jason Burke, Graham Rose, Ned Balfe, Jonathan Ross's Week, Mark Pyper, Christa D'souza, Frank Whitford, Harry Bramson, Christopher Goodwin Tonopah, Alistair Scott, Sue Lloyd-Roberts, Sally Payne, Lucy Hughes-Hallett, David Smith, Lan Burrell, Charles Hymas, Beverley D'silva, Mary Wilson, K R, Edward Platt, Tony Allen-Mills, Martin James, Robert Sandall, Jane Elliott, Betty E Box Obe Pinewood Studios, Irwin Stelzer, Bill Borrows, Peter Wilson, Tyne, Deryk Brown, Roger Anderson, Ivan Fallon, David Dougill, Richard Weekes, John Evans, David Hewson, Harvey Porlock, Margaret Coles, Hugh Canning, Roger Graef, Jeremy Clarkson, Peter Kemp, Dr P England, Dennis Mee, Louise Taylor, Nicholas Booth, Jeff Vickers, David Cairns, Vivienne Doughty, Lyn Hayward, Paul Eddy, Geoff Whitten, Simon Hinde, Michael Jones, Jeannette Kupfermann, Paul Ross, Caroline Lees, Kirstie Hamilton Deputy City Editor, Peter Millar, Peter Kellner, George Perry, Cathy Scott-Clark, Hugh McManners Defence Correspondent, Shelley von Strunckel, Ardyn Bernoth, Mathew Lynn, Bernard Cafferty, Max Hastings, Susan d'Arey, Paul Ham, Saul Bellow, Stuart Wavell, Paul Donovan, Michael Prescott Political Correspondent, Pazit Ravina, Andrew Ferguson, George Edward, Gerald Kaufman, Sue Lawrence, Paul Driver, James Adams, Sue Fox, Wear, Liz Lightfoot, Ian Hawkey, Ian Chadband, Dominic Regan, Paul Dacre, David Leppard, Toni Turner, Tim Rayment, Tim Kelsey, S Sherwood, John Stalker, Kirstie Hamilton, Tom Shone, Mark Edwards, Cathy Scott-Clark Education Correspondent, Susan Clark, Stephen Amidon, David Lawrenson, Parls, Stephen Eaton, Julian Loose, David Baddiel, Dave Thomas, Frances Kennedy, Phil Baker, Malcolm Ritchie, John Harlow Arts Correspondent, Sean Newsom, Anthea Turner, Alice Parks, John Karter, Daniel Goleman, Ed Porter, Dr Helen Grant, Cindy Jackson, Diana Wright, N B, Helen Hawkins, H J Heinz, Frank Kane, Stephen Jones, John Horovitz, Richard Evans, Nick Cain, Adrienne Connors, Andrew Neil, Peter Conradl Brussels, James Ashby, Phillip Craigie, Andrew Grice, Paul Nuki, Robin Simon, Julie Cohen, Martin Searby, Rob Ryan, Claire Oldfield, Ian Critchley, Marcel Berlins, Chris Feeten, Steven Haynes, Ian Burrell, Mandy Francis, Sean Thomas, Chris Kilkenny, Russell Miller, Rupert Clevely, Richard Woods, Roland White, Peter Johnson, Keith Simpson, Marcello Mega, Maurice Chittenden, Dj Taylor, David Bounds, Andrew Lorenz Business Editor, Mark Franchetti, Julie Burchill, Sophia Shaw, Dr Joseph Cannataci, Peter Watts, Susan Elkin, Jonathan Leake, David Hunn, Sean Hargrave, Margaret Walters, Godfrey Smith, Lesley Thomas, Michael Austin, Roy Greenslade, Peter Jemmett, Andrew Alderson, John Waples, A A Gill, Frank Skinner's, Michael Moynihan, Julie Smyth, Norman Macrae, John Turnbull, Kirsty Lang, Steve Boxer, Chrissy Iley, Lauren St John, Stephen Pettitt, Gilbert Adair, Charles Moore, Dominic Lawson, Andrew Lorenz, Naomi Caine, Andrew Wilson, Roger Dobson, Katie Gaunt, Mark Hodson, Nicholas Hellen Media Correspondent, Joe Lovejoy, Rupert Steiner, Nigel Roebuck, Chris Lightbown, Philip Agee, Hugh Morison, Bob Murray, Gore Vidal, Simon Sebag Montefiore, Phillip Knightley, Hugh Pearman, David Smith Economics Editor, Frances Wood, Neil MacLean, Barbara Chandier, Conal Gregory, St Rating, Simon Reeve, Anthony Howard, Emma Forrest, Carey Scott, Walter Ellis, Stephen Boyd, Joanna Simon, Sophie Grigson, Mandy Piggot, Dan Pearson, Stephen Hayward, Boris Schapiro, Karen Robinson,
... healthcare group Sap Programmers Datapro Information Services Group Ethernet OCS Methods plc Army Officers Marketing Professionals News ... further Le Shuttle Italian Flight Centre Ski Thomson Green & Pleasant Christopher Somerville finds the black and scarred ...
1995 - Gale Group | Sunday Times HA GDA
Chen Shen, Ahmad R. Dhaini, Pin‐Han Ho, Basem Shihada, Gangxiang Shen, Chih-Hao Lin,
... effective approach for achieving maximum energy conservation in green Ethernet passive optical networks (EPONs).While overlapping downstream and upstream ONU transmissions can maximize the ONU sleep time, it jeopardizes the quality of service (QoS) performance of the network, especially for downstream traffic in case the overlapping is based on the upstream time slot.In this paper, we study the downstream traffic performance in green EPONs under the limited service discipline and the ...
Tópico(s): Optical Network Technologies
2012 - International Communication Association | Journal of Communications
... we propose a novel model, which is called Green Radio OVer Ethernet (GROVE), that merges these three approaches to maximize ...
Tópico(s): Software-Defined Networks and 5G
2020 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Green Communications and Networking
Hidetoshi Takeshita, Naoaki Yamanaka, Satoru Okamoto, Sho Shimizu, Shan Gao,
... switches, we successfully demonstrate an energy efficient IP/Ethernet network. The evaluation results show that network power savings of up to 30% can be realized under the NFSNET topology model. The proposed algorithm and power efficient network architecture can be applied to realize the future green network.
Tópico(s): Advanced Optical Network Technologies
2011 - Elsevier BV | Optical Switching and Networking
Mohamad Khattar Awad, Phone Lin, Gi Ren Liu,
The existing Ethernet networks are designed with high redundancy and over-dimensioning so they can provide reliable services during peak traffic demand periods. However, this has increased the total energy consumption and operational cost. In this paper, we propose an energy saving algorithm (ESA) to reduce the energy consumption of green routers by considering the buffer status and the traffic load. We develop a Network Simulator, version 2, (NS- ...
Tópico(s): Software-Defined Networks and 5G
2018 - Taiwan Academic Network | 網際網路技術學刊
Yanqing Li, Guokun Tang, Yongsheng Ma, Shuangyu Liu, Tao Ren,
... cameras are sent to a computer through an Ethernet switch. The original red, green and blue (RGB) images are converted to greyscale ...
Tópico(s): Advanced Welding Techniques Analysis
2019 - IOP Publishing | Measurement Science and Technology
Burak Kantarcı, Hussein T. Mouftah,
... a distributed bandwidth allocation signalling framework for a green hybrid Fibre-Wireless (Fi-Wi) access network, which is based on the convergence of ethernet passive optical network and third-generation partnership project- ...
Tópico(s): Optical Network Technologies
2012 - Institution of Engineering and Technology | IET Optoelectronics
... storage media running on a linux-based Gigabit Ethernet network. The lidar is a hybrid scanned-flash system employing a 10 KHz green laser and novel circular scanner, with a large ...
Tópico(s): Advanced Optical Sensing Technologies
2010 - SPIE | Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE
David Larrabeiti, Pedro Reviriego, José Alberto Hernández, Juan Antonio Maestro, Manuel Urueña,
... copper EEE actually outperforming the current regular optical Ethernet in terms of energy saving in such a way that optical PHYs (transceivers) actually need a green upgrade to remain more energy efficient than their copper counterparts? (b) How much energy saving could be actually achieved by EE optical Ethernet? (c) What is the transition time required to ...
Tópico(s): Optical Network Technologies
2011 - Elsevier BV | Optical Switching and Networking
Jialiang Zhang, Sujing Wang, Ziqi Ma, Guanjun Gao, Yonggang Guo, Fei Zhang, Shanguo Huang, Jie Zhang,
... at a depth of 1650 m, two-way Ethernet UWOC links are achieved with 125 Mb/s direction-adjustable green light link and 6.25 Mb/s nonline- ...
Tópico(s): Image Enhancement Techniques
2023 - Institute of Electrical and Electronics Engineers | IEEE Communications Magazine
Shinobu Miwa, Sho Aita, Hiroshi Nakamura,
Energy Efficient Ethernet (EEE) is an Ethernet standard for lowering power consumption in commodity network devices. When the load of a link is low, EEE allows the link to turn into a low power mode and therefore can significantly save the power consumption of a network device. EEE is expected to be adopted in high performance computing (HPC) systems a few years later, but the performance impact caused by EEE-enabled in HPC systems is still unknown. To encourage HPC system developers to adopt the ...
Tópico(s):
2013 - Springer Science+Business Media | Computer Science - Research and Development
Marco Ajmone Marsan, Antonio Fernández Anta, Vincenzo Mancuso, Balaji Rengarajan, Pedro Reviriego Vasallo, Gianluca Rizzo,
The recently approved Energy Efficient Ethernet standard IEEE 802.3az achieves energy savings by using a low power mode when the link is idle. However, those savings heavily depend on the traffic patterns, due to the overhead inherent in transitions between active and low power modes. This makes it impractical to estimate energy savings through measurements or simulations in all relevant scenarios. In this letter we present an analytical model to estimate the energy consumption of an Energy Efficient ...
Tópico(s):
2011 - IEEE Communications Society | IEEE Communications Letters
Attila Takács, Howard Green, Benoit Tremblay,
Most of the world's traffic is now packet-based. While SONET/SDH transport technology continues to evolve, there are now major standardization efforts to develop a native packet-oriented transport technology. Ethernet, long dominant in the enterprise, is one of the fastest developing technologies for the transport layer. GMPLS, based on mature signaling and routing protocols, is gaining traction as a transport control plane, providing fast restoration and supporting automation of provisioning. We ...
Tópico(s): Advanced Photonic Communication Systems
2008 - Institute of Electrical and Electronics Engineers | IEEE Communications Magazine
Kyung Jae Kim, Shunfu Jin, Naishuo Tian, Bong Dae Choi,
The IEEE P802.3az Energy Efficient Ethernet (EEE) protocol specifies a Low Power Idle (LPI) mode in which Ethernet device can save energy by turning off components when its queue is empty, and defines a scheme for coordinating the transitions between the LPI and active modes. Depending on when Ethernet devices enter and exit the LPI mode, two schemes have been proposed: the frame transmission scheme and the burst transmission scheme. P. Reviriego et al. proposed the burst transmission scheme (the same ...
Tópico(s):
2013 - Elsevier BV | Performance Evaluation
M Wujut Hariyanto, Ade Hendri Hendrawan, Ritzkal Ritzkal,
... on the DHT11 sensor, LED light, LCD i2c, Ethernet Shield, and Telegram test. The integration test on the LCD showed that when the temperature was below or the same as 25˚C, the green LED would be ON and the red LED ...
Tópico(s): Arduino and IoT Applications
2020 - | Journal of Robotics and Control (JRC)
D. Bimberg, D. Arsenijević, Gunter Larisch, Hui Li, James A. Lott, Philip Moser, H. Schmeckebier, P. Wolf,
The use of Internet has increased and continues to increase exponentially, mostly driven by consumers. Thus bit rates in networks from access to WDM and finally the computer clusters and supercomputers increase as well rapidly. Their cost of energy reaches today 5-6 % of raw electricity production. For 2023 a cross over is predicted, if no new "green" technologies or "green" devices" will reduce energy consumption by about 15% per year. We present two distinct approaches for access and computer networks ...
Tópico(s): Optical Network Technologies
2014 - SPIE | Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE
... wavelength capable to download and upload data through Ethernet cable while green LED in 520 nm wavelength transmits a video ...
Tópico(s): Advanced Photonic Communication Systems
2013 - Springer Nature | Advances in intelligent systems and computing
Shun Fu Jin, Rong Fan, Li Chen,
... to improve the energy efficiency and build a green Ethernet, we propose a simple power saving (SPS) scheme ...
Tópico(s): Software-Defined Networks and 5G
2012 - Trans Tech Publications | Applied Mechanics and Materials
Xin Liu, Navid Ghazisaidi, Liviu Ivănescu, Rui Kang, Martin Maier,
... video delivery in IEEE 803.3az Energy Efficient Ethernet (EEE)-based FiWi access networks are addressed in this paper. We extend EEE packet coalescing by considering QoS priorities and the shared nature of FiWi networks and improve the QoS support for video delivery by proposing a green QoS differentiated routing strategy. In addition, to better ...
Tópico(s): Software-Defined Networks and 5G
2011 - Institute of Electrical and Electronics Engineers | Journal of Lightwave Technology
Raffaele Bolla, Roberto Bruschi, Alessandro Carrega, Franco Davoli, Paolo Lago,
We propose an analytical model able to accurately estimate both power consumption and network performance indexes of Energy Efficient Ethernet (EEE) links working at the three available speeds under various traffic load patterns and packet size distributions. The model is sufficiently flexible and accurate to consider different traffic parameters; among others, the packet size distribution, the average burst inter-arrival rate, the burst size distribution, etc. With relatively low complexity, since ...
Tópico(s):
2014 - Institute of Electrical and Electronics Engineers | IEEE Journal on Selected Areas in Communications
Sendren Sheng‐Dong Xu, Teng‐Chang Chang,
... either the PCI Express (PCIe) interface or gigabit Ethernet interface, the proposed design of the ARM server board and the systems can, therefore, be extensively applied. This physical implementation and measurement show that the proposed architecture can work well. The proposed energy-saving (i.e., green) server designs with low-power processors are suitable ...
Tópico(s): Parallel Computing and Optimization Techniques
2017 - Institute of Electrical and Electronics Engineers | IEEE Access
D.P. Taylor, D. Oster, L. Green,
The VLSI Ethernet controller chips are discussed from a designer's viewpoint. Their method of operation is explained and design tradeoffs are presented with concentration placed on memory response requirements, memory location options relative to the VLSI devices, and the effects of FIFO depth on performance. A "common sense" architecture for an Ethernet node processor with application to many classes of Ethernet nodes is suggested to conclude the paper.
Tópico(s): Interconnection Networks and Systems
1983 - Institute of Electrical and Electronics Engineers | IEEE Journal on Selected Areas in Communications
... 1 and 10 Gbit/s point-to-point ethernet and Passive Optical Networks (1G-PON and 10G-PON). The metric for energy efficiency we used in this study is energy consumed per bit transmitted. Results: Results of the comparative study on energy efficiency of different access networks are shown and discussed. Additionally, we estimated environmental implications of different access options by means of reductions in Green House Gas (GHG) emissions caused by the electricity ...
Tópico(s): Optical Network Technologies
2011 - | American Journal of Engineering and Applied Sciences
Sergio Herrerı́a-Alonso, Miguel Rodríguez‐Pérez, Manuel Fernández‐Veiga, Cándido López-Garcı́a,
The IEEE 802.3bj standard defines two potential low power operating modes for high speed energy efficient ethernet (EEE) physical interfaces working at 40 and 100 Gb/s: a not-so-efficient low power mode that requires very short transition times to restore normal operation (Fast-Wake) and a highly efficient low power mode with longer transition times (Deep-Sleep). In this paper, we present a new frame coalescing mechanism that dynamically adjusts the coalescing queue threshold in order to minimize the ...
Tópico(s):
2017 - IEEE Communications Society | IEEE Transactions on Communications
Guo Feng, Xiaojun Wang, Mei Song, Yifei Wei, Olga Ormond, Martin Collier,
... When the router is further modified to support green traffic engineering and Ethernet port shut-down, power consumption can be reduced ...
Tópico(s): Software-Defined Networks and 5G
2016 - Multidisciplinary Digital Publishing Institute | Energies
Won-Hyuk Yang, Dong-Ki Kang, Young-Chon Kim,
As many researchers have been interested in Green IT, Energy Efficient Ethernet(EEE) with rate adaptation has recently begun to receive many attention. However, the rate adaptation scheme can have different energy efficiency and delay ...
Tópico(s): Network Time Synchronization Technologies
2010 - THE KOREAN INSTITUTE OF COMMUNICATIONS AND INFORMATION SCIENCES (KICS) | The Journal of Korean Institute of Communications and Information Sciences
Cheng‐Yi Chen, Chien-Yuan Liu, Chiu-Chan Kuo, Cheng‐Fu Yang,
... system design for a building's electrical power, green power generation and environmental system that will save energy. The supervisory control system is based on the use of distributed microcontroller architecture to access programmable logic controllers (PLC) and remote input/output devices through the system hardware framework with uniform Ethernet technology. The programmable logic controller (PLC) can access ...
Tópico(s): Industrial Automation and Control Systems
2017 - Multidisciplinary Digital Publishing Institute | Micromachines
Peter G. Whiteis, Melinda Mello,
... by using a collision free ring topology, efficient Ethernet frame utilization (> 95%), and data exchange "on the fly". These characteristics enable EtherCAT to achieve Master to Slave node data exchange rates of > 1000 Hz. The Green Bank Telescope, commissioned in 2000, utilizes an analog ... scientific goals of observing at 115GHz. Accordingly, the Green Bank staff has embarked on a servo upgrade project to develop a digital servo system which accommodates development and implementation of advanced control algorithms. This paper describes how the new control system requirements, use of existing infrastructure and budget constraints led us to define a distributed motion control architecture where EtherCAT real-time Ethernet was selected as the communication bus. Finally, design ...
Tópico(s): Embedded Systems Design Techniques
2012 - SPIE | Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE
Shinji Nishimura, Kazunori Shinoda, Yong Lee, Goichi Ono, K. Fukuda, Fumio Yuki, Takashi Takemoto, Hidehiro Toyoda, Masaki Yamada, Shinji Tsuji, Naoya Ikeda,
... subject of great interest. The main issue of green networking is relieving the increasing power consumption, and photonic technologies will be effective for such issue. Photonic technologies are low-power external input/output (I/O) port and internal interconnection subsystem, which contributes to reduce power consumption of routers and switches. For the external I/O port, 100-Gb Ethernet technologies, which use high-speed and low-power ...
Tópico(s): Optical Network Technologies
2010 - IEEE Photonics Society | IEEE Journal of Selected Topics in Quantum Electronics
This paper presents a life cycle assessment of the energy and emission intensity of wired and wireless local area network access. Following a cradle-to-grave approach, the energy consumed and greenhouse gas emissions in the manufacture of Ethernet switches and WiFi access points (including the extraction of raw materials, component manufacturing, assembly, and transportation) as well as during their actual usage are evaluated. The results show that while the manufacturing stage is responsible for ...
Tópico(s): 3D IC and TSV technologies
2013 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Consumer Electronics