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A distributed UNIX system based on a virtual circuit switch

G. W.R. Luderer, H. Che, J. P. Haggerty, P. A. Kirslis, W. T. Marshall
1981 Proceedings of the eighth symposium on Operating systems principles - SOSP '81  
Operational since early 1980, the system has served as a vehicle to explore virtual circuit switching as the basis for distributed system design.  ...  Small front-end processors handle the data and control protocol for error and flow-controlled virtual circuits. Terminals may be connected directly to the computers or through the switch.  ...  Finally, this work would not have been possible without Ken Thompson and Dennis Ritchie having supplied us with a foundation to build upon: an efficient and understandable operating system, the UNIX system  ... 
doi:10.1145/800216.806604 dblp:conf/sosp/LudererCHKM81 fatcat:5kaxm6on7vfcvnmq2pvgm56xdm

Declarative Verifiable SDI Specifications

Rick McGeer
2016 2016 IEEE Security and Privacy Workshops (SPW)  
It's hard to diagnose network problems, and it's hard to diagnose runtime issues on a remote system.  ...  The large challenge before the community is then to design configuration models for software-defined infrastructure that preserve the precise and weak semantics of the implementation domain; offer appropriate  ...  Acknowledgements The author wishes to thank his colleagues at US Ignite for much support throughout this process, and Glenn Ricart for stimulating conversations.  ... 
doi:10.1109/spw.2016.49 dblp:conf/sp/McGeer16 fatcat:jj7chq6vozdbnenanhlf2d7hg4

Status and Trends in Networking at LHC Tier1 Facilities

A Bobyshev, P DeMar, V Grigaliunas, J Bigrow, B Hoeft, A Reymund
2012 Journal of Physics, Conference Series  
As a result, the Tier1 centers tend to be on the leading edge of data center networking technology.  ...  LHC's distributed computing model is based on the availability of high capacity, high performance network facilities for both the WAN and LAN data movement, particularly within the Tier1 centers.  ...  For this, we need to understand where we are at any particular time, what we might need to anticipate on requirements, technology progress, and so on.  ... 
doi:10.1088/1742-6596/396/4/042011 fatcat:bz6w3ndzjrcl7lk5d6dhk2qkte

Seamlessly transformable hybrid packet and circuit switching for eff icient optical networks

Weiqiang Sun Weiqiang Sun, Pingqing Li Pingqing Li, Chao Li Chao Li, Weisheng Hu Weisheng Hu
2013 Chinese Optics Letters (COL)  
While optical packet switching remains an attractive switching paradigm in the long run, technical challenges prohibit it from becoming a practical solution for the ever-growing bandwidth hunger during  ...  Finding a technically viable way to meet the increasing capacity requirement with good scalability and flexibility becomes a clear pursue for the community.  ...  Distributed control, especially the support of multiple-hop circuits in a hybrid system, is subject of further study.  ... 
doi:10.3788/col201311.010601 fatcat:fy2heg3hlbhylbajpv4qxxqqdq

Integrated voice/data switching

T.M. Chen, D.G. Messerschmitt
1988 IEEE Communications Magazine  
For example, the primary carrier for voice has been the public switched telephone network whereas data has been handled for the most part by specialized data networks.  ...  Although ISDN will most likely be comprised of logically separate networks as shown in Figure l , it will provide subscribers with the functionality of a single, integrated network by offering a standardized  ...  Acknowledgment The authors are grateful to Dr. Patrick White of Bell Communications Research for his helpful comments on an earlier version of this manuscript.  ... 
doi:10.1109/35.457 fatcat:g4nzfogqw5hz3odvu2qalmkjmm

Development and research of a virtual test bench for electric impedance tomography channel main components simulation

Ivan Shcherbakov, Nikolay Gorbatenko, Roman Polyakov, Konstantin Shirokov
2020 Eastern-European Journal of Enterprise Technologies  
for 2014-2020" with the financial support of the Ministry of Science and Higher Education (agreement No. 05.607.21.0305) Unique identifier of the agreement RFMEFI60719X0305.  ...  Acknowledgements The study is carried out within the framework of the federal target program "Research and Development in Priority Areas of Development of the Scientific and Technological Complex of Russia  ...  This article describes the development process for complex systems-on-a-chip, such as trusted personal devices, for which cost and time to market are very important constraints.  ... 
doi:10.15587/1729-4061.2020.210774 fatcat:c5jtk5jzibgb5pubk7ydexoszy

Stepped Supply Voltage Switching for energy constrained systems

S. Khanna, K. Craig, Y. Shakhsheer, S. Arrabi, J. Lach, B. H. Calhoun
2011 2011 12th International Symposium on Quality Electronic Design  
The energy consumed in switching the voltage on the power rail (V DD switching energy) is a significant overhead in systems using Dynamic Voltage Scaling (DVS) and/or power gating.  ...  In this work we propose and demonstrate the use of Stepped Supply Voltage Switching (SVS) for reducing V DD switching energy.  ...  Acknowledgements This work was funded in part by a DARPA seedling grant.  ... 
doi:10.1109/isqed.2011.5770803 dblp:conf/isqed/KhannaCSALC11 fatcat:y72l56p5nncylgemgtfuozsusm

Designing multiprotocol label switching networks

J. Lawrence
2001 IEEE Communications Magazine  
In turn, the design process for MPLS networks has much in common with the design of any IP network.  ...  Multiprotocol label switching adds to the capabilities of IP networks in several ways. Despite new capabilities, MPLS technology has much in common with ordinary IP networks.  ...  If a customer site is connected to a router by a permanent virtual circuit, the virtual circuit is seen by IP routing as a single-hop direct connection.  ... 
doi:10.1109/35.933449 fatcat:wzod33kojbc3bfbadeke2lz66a

Multilevel converter integration for low voltage ride through controlling renewable wind energy conversion systems

Mahrous Ahmed, Electrical Engineering Department, College of Engineering, Taif University, Taif 21944, Saudi Arabia, Bassem Alamri, Mohamed Metwally, Mosleh Alharthi, Ali Alzaed, Nagy Elkalashy, Farhan Salem, Saad Mekhilef, Mohamed Orabi, Sherif Ghoneim, Electrical Engineering Department, College of Engineering, Taif University, Taif 21944, Saudi Arabia (+8 others)
2021 Maǧallaẗ al-abḥāṯ al-handasiyyaẗ  
On the basis of the proposed control concerning the virtual voltage concept, the generator currents are limited to the rated values, thereby protecting the energy conversion system during low grid voltages  ...  The use of designed virtual voltage values is proposed as inputs to the controller to limit these currents at the rating values.  ...  ACKNOWLEDGMENT The authors would like to acknowledge the financial support received from Taif University Researchers Supporting Project Number (TURSP-2020/146), Taif University, Taif, Saudi Arabia.  ... 
doi:10.36909/jer.v9i2.9725 fatcat:d5cgsbz2ffdmvba42dow2fgozi

The OptIPuter: high-performance, QoS-guaranteed network service for emerging E-science applications

N. Taesombot, F. Uyeda, A.A. Chien, L. Smarr, T.A. DeFanti, P. Papadopoulos, J. Leigh, M. Ellisman, J. Orcutt
2006 IEEE Communications Magazine  
These private optical paths are set up on-demand, and combined with end resources to form a Distributed Virtual Computer (DVC).  ...  The OptIPuter project is pioneering a radical, new type of distributed application paradigm which exploits dedicated optical circuits to tightly couple geographically-dispersed resources.  ...  Support from the UCSD Center for Networked Systems, BigBangwidth, and Fujitsu is also gratefully acknowledged.  ... 
doi:10.1109/mcom.2006.1637945 fatcat:uoxx42zccfeutbu3vmkisq7xmy

Path switching-a quasi-static routing scheme for large-scale ATM packet switches

T.T. Lee, C.H. Lam
1997 IEEE Journal on Selected Areas in Communications  
A quasi-static routing scheme called path switching for large-scale ATM packet switch systems is proposed in this paper.  ...  The static routing scheme, such as multirate circuit switching, does not fully exploit the statistical multiplexing gain.  ...  Unlike the multirate circuit switching, the dynamic routing scheme usually does not guarantee the bandwidth for each individual connection; thus, only desired overall system performance, such as total  ... 
doi:10.1109/49.594852 fatcat:3jaeym7herh7nmualqnftwhmsu

Xunet 2: lessons from an early wide-area ATM testbed

C.R. Kalmanek, Srinivasan Keshav, W.T. Marshall, S.P. Morgan, R.C. Restrick
1997 IEEE/ACM Transactions on Networking  
The network serves as a "laboratory without walls" for eight research groups across the United States.  ...  While Xunet 2 has only a small number of nodes, it was designed as a prototype of a nationwide ATM network.  ...  We left the paper in the present tense as was appropriate at the time of writing.  ... 
doi:10.1109/90.554721 fatcat:ltcdt2ozdbapvhmgv2og4pjzom

A Circuit Simulation System Based on SPICE Secondary Development

Yan-ming YANG, Wan-chun GAO, Yang GAO
2017 DEStech Transactions on Engineering and Technology Research  
A novel scheme that uses the SPICE (Simulation Program with Integrated Circuit Emphasis) simulation program as a behavioral modeling language in designing the simulation system of electronic circuit experiment  ...  As an early open source program, SPICE was widely distributed and used[1]. DC Analysis.  ...  For example, the virtual instruments usually consist of panels, knobs, switches, dial plates, etc. In Figure 1 , there a solid model of virtual function generator.  ... 
doi:10.12783/dtetr/iceea2016/6654 fatcat:vzrgqkfc2jb3dn6pp4dyvd4ffa

Router architecture for high-performance NoCs

Everton Carara, Fernando Moraes, Ney Calazans
2007 Proceedings of the 20th annual conference on Integrated circuits and systems design - SBCCI '07  
Finally, the work proposes the use of a session layer coupled to circuit switching.  ...  This work discusses trade-offs on using circuit and packet switching, arguing in favor of the former with fixed packet size.  ...  Packet-switched networks often allow for high aggregate system bandwidth, as many packets can be in flight at a given instant [3] .  ... 
doi:10.1145/1284480.1284515 dblp:conf/sbcci/CararaMC07 fatcat:hk5jmhq46ffchbu5k6d4upztiq

Traffic Engineering [chapter]

Mahesh Kumar
2012 Optical Communications Systems  
When congestion occurs, packets are dropped from the longest queue. At the gateway, the processing and link resources are distributed to the end-systems on a round-robin basis.  ...   A virtual circuit was established along the computed path.  ...  The researcher has also concentrated on wavelength conversion, switching, demultiplexing in the time domain and other enhanced functions for optical communications systems.  ... 
doi:10.5772/35969 fatcat:wbeyuq72qbgxvmqa7obpao6nsi
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