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The LOCUS distributed operating system

Bruce Walker, Gerald Popek, Robert English, Charles Kline, Greg Thiel
1983 ACM SIGOPS Operating Systems Review  
LOCUS Is a distributed operating system which supports transparent access to data through a network wide fllesystem, permits automatic replication of storaget supports transparent distributed process execution  ...  Partitioned operation of subnetl and their dynamic merge is also supported. The system has been operational for about two years at UCLA and extensive experience In its use has been obtained.  ...  Strategy for Distributed Operation LOCUS is a procedure based operating systemprocesses request system service by executing system calls, which trap to the kernel.  ... 
doi:10.1145/773379.806615 fatcat:s5id2l6z3fgrlmimutvvkpn6hy

The LOCUS distributed operating system

Bruce Walker, Gerald Popek, Robert English, Charles Kline, Greg Thiel
1983 Proceedings of the ninth ACM symposium on Operating systems principles - SOSP '83  
LOCUS Is a distributed operating system which supports transparent access to data through a network wide fllesystem, permits automatic replication of storaget supports transparent distributed process execution  ...  Partitioned operation of subnetl and their dynamic merge is also supported. The system has been operational for about two years at UCLA and extensive experience In its use has been obtained.  ...  Strategy for Distributed Operation LOCUS is a procedure based operating systemprocesses request system service by executing system calls, which trap to the kernel.  ... 
doi:10.1145/800217.806615 dblp:conf/sosp/WalkerPEKT83 fatcat:wmwnl3dkw5fg3nkpg5oilfhp3q

LOCUS a network transparent, high reliability distributed system

G. Popek, B. Walker, J. Chow, D. Edwards, C. Kline, G. Rudisin, G. Thiel
1981 Proceedings of the eighth symposium on Operating systems principles - SOSP '81  
LOCUS is a distributed operating system that provides a very high degree of network transparency while at the same lime supporting lligh performance and automatic replication of storage, By network transparency  ...  Graceful operation during network topology changes is supported.  ...  We call this view the integrated model of distributed systems. LOCUS takes this approach.  ... 
doi:10.1145/800216.806605 dblp:conf/sosp/PopekWCERT81 fatcat:ahtqvr4fznfkzefnrjezjgysbm

LOCUS a network transparent, high reliability distributed system

G. Popek, B. Walker, J. Chow, D. Edwards, C. Kline, G. Rudisin, G. Thiel
1981 ACM SIGOPS Operating Systems Review  
More importantly, however, concepts needed for solution in the data area provide a solid framework for extension, and further, the mechanisms that must be built are much of what is needed for distributed  ...  Note that LOCUS was designed to provide network transparency access to and replication of both data resources and processing resources or agents.  ...  We call this view the integrated model of distributed systems. LOCUS takes this approach.  ... 
doi:10.1145/1067627.806605 fatcat:nu4boiuxozastngik4duknbqau

Distributed system V IPC in LOCUS: a design and implementation retrospective

B D Fleisch
1986 Proceedings of the ACM SIGCOMM conference on Communications architectures & protocols - SIGCOMM '86  
IPC has formed the basis for extending many operating systems into distributed operating systems; communications mechanisms were selected to adapt single machine systems to interact with each other.  ...  This paper will examine the latter approach in the context of a UNIX-based system called Locus.  ...  Central to the design of the Locus architecture is the underlying distributed file system.  ... 
doi:10.1145/18172.18215 dblp:conf/sigcomm/Fleisch86 fatcat:6nmt6vlm3bamhajmdvsd2w3h7m

Genesis

Thomas W. Page, Matthew J. Weinstein, Gerald J. Popek
1985 SIGMOD record  
Substantial portions of this approach are implemented and are operational as extensions to the Locus distributed Unix operating system.  ...  AbSMCt An approach to the architecture of distributed databases is presented, oriented around extensive embeddmg of database prinntives in the underlying distributed operating system.  ...  In sum, Locus appears to be a good basis upon which to build the Genesis distributed database operating system.  ... 
doi:10.1145/971699.318988 fatcat:yq3py663enbape6ko5sbpp25uy

Genesis

Thomas W. Page, Matthew J. Weinstein, Gerald J. Popek
1985 Proceedings of the 1985 ACM SIGMOD international conference on Management of data - SIGMOD '85  
Substantial portions of this approach are implemented and are operational as extensions to the Locus distributed Unix operating system.  ...  AbSMCt An approach to the architecture of distributed databases is presented, oriented around extensive embeddmg of database prinntives in the underlying distributed operating system.  ...  In sum, Locus appears to be a good basis upon which to build the Genesis distributed database operating system.  ... 
doi:10.1145/318898.318988 dblp:conf/sigmod/PageWP85 fatcat:mxefo2zmczewtl7h73v4kffu5e

The organisation of the incompatibility factors in higher fungi: The effect of structure and symmetry on breeding

Judith Stamberg, Y Koltin
1973 Heredity  
A symmetrical distribution of alleles among the four loci of a two-locus bifactorial system allows for maximal outbreeding.  ...  The asymmetrical distribution of alleles among the four incompatibility loci of Schizophyllum commune suggests that its incompatibility system evolved from a one-locus unifactorial system.  ...  For the 2-locus system it is assumed that the allelic specificities are distributed equally between the two loci.  ... 
doi:10.1038/hdy.1973.2 fatcat:giwikbfjhvczlgenoti2niifvi

Transactions and synchronization in a distributed operating system

Matthew J. Weinstein, Thomas W. Page, Brian K. Livezey, Gerald J. Popek
1985 ACM SIGOPS Operating Systems Review  
The design and implementation is done in the context of Locus, a high performance distributed Unix operating system for local area networks.  ...  A fully distributed operating system transaction facility with fine-grain record level synchronization is described.  ...  The transaction and locking facilities described in this paper utilize several pre-existing mechanisms in the underlying Locus I distributed operating system [Popek81] [Walker83], currently operational  ... 
doi:10.1145/323627.323640 fatcat:dzasrwnf2zasto3hue5phfbv7e

Stability and transient-behavioural assessment of power-electronics-based dc-distribution systems

J O Flower, C G Hodge, Honorary
2004 Journal of Marine Engineering & Technology  
An increasing serious contender for a power distribution system is a dc one. Such systems are well-known in satellite engineering.  ...  The purpose of this contribution is to demonstrate that an approach to this problem, based on the root-locus technique, is well worth considering.  ...  Acknowledgement The authors are most keen to acknowledge the participation and contribution of David Mattick OBE, Alstom Power and Conversion, without whose stimulating company and advice, stemming from  ... 
doi:10.1080/20464177.2004.11020180 fatcat:6qoheysh75fankilpzmbk5r4e4

Allele Diffusion in Linear Genetic Programming and Variable-Length Genetic Algorithms with Subtree Crossover [chapter]

Riccardo Poli, Jonathan E. Rowe, Christopher R. Stephens, Alden H. Wright
2002 Lecture Notes in Computer Science  
More precisely, crossover attempts to push the population towards distributions of primitives where each primitive is equally likely to be found in any position in any individual.  ...  individuals in the population, but also to diffuse within the representation of each individual.  ...  Acknowledgements CRS would like to thank the University of Birmingham for a visiting Professorship and DGAPA-PAPIIT grant IN100201. RP and CRS would like to thank the Royal Society for their support.  ... 
doi:10.1007/3-540-45984-7_21 fatcat:73htixyuwfgjbf5w2jxelaibze

Local-area distributed systems

R. C. Summers
1989 IBM Systems Journal  
Distributed operating systems. We have seen that transparency is a powerful concept. Research on transparency led to the LOCUS system.  ...  Kiser, “The LOCUS distributed file system,” The LOCUS Distributed System Architecture, The MIT Press, Cambridge, MA (1985), pp. 29-72. . M. J. Weinstein, T. W. Page, Jr., B. K. Livezey, and G. J.  ... 
doi:10.1147/sj.282.0227 fatcat:ti4cfvsh4vgijjq5pqpaaxtqte

Control stabilisation of multiple distributed generation

M. Aktarujjaman, M.E. Haque, K.M. Muttaqi, M. Negnevitsky, G. Ledwich
2007 2007 Australasian Universities Power Engineering Conference  
The stable and reliable operation of such power system requires sophisticated control.  ...  mode of operation.  ...  This paper has investigated the stability of islanding operation during and subsequent islanding process with multiple DGs operated in a distribution system.  ... 
doi:10.1109/aupec.2007.4548096 fatcat:zcw4axwskvh4vateeyrkf5rdfi

III-Nitride Multi-Quantum-Well Light Emitting Structures with Selective Carrier Injection

Hussein S. El-Ghoroury, Mikhail V. Kisin, Chih-Li Chuang
2019 Applied Sciences  
distribution across the structure's active region to match the application-driven device injection characteristics.  ...  We further exemplify the method's versatility by demonstrating the IBL design of III-nitride multiple-quantum-well (MQW) light-emitting diode with active quantum wells uniformly populated at LED operational  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/app9183872 fatcat:il5bkdzshjcljo54kwrgtrbusu

A Query Algebra for XML P2P Databases [chapter]

Carlo Sartiani
2006 Lecture Notes in Computer Science  
This paper describes a query algebra for queries over XML p2p databases that provides explicit mechanisms for modeling data dissemination, replication constraints, and for capturing the transient nature  ...  In the field of database research, p2p systems affirmed as an interesting evolution of past distributed and integration systems.  ...  operations can be split and distributed across the query; this, in turn, allows the system to more easily decompose a query in single-location subqueries.  ... 
doi:10.1007/11896548_48 fatcat:chxxpw4i6nadza74a32wjr235e
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