scholarly journals WLCG Networks: Update on Monitoring and Analytics

2020 ◽  
Vol 245 ◽  
pp. 07053
Author(s):  
Marian Babik ◽  
Shawn McKee ◽  
Pedro Andrade ◽  
Brian Paul Bockelman ◽  
Robert Gardner ◽  
...  
Keyword(s):  
Working Group ◽  
Data Transfer ◽  
Primary Source ◽  
Global Network ◽  
Traffic Routing ◽  
Network Analytics ◽  
The Rich ◽  
Effective Network ◽  
Transfer Services ◽  
Network Diagnosis

WLCG relies on the network as a critical part of its infrastructure and therefore needs to guarantee effective network usage and prompt detection and resolution of any network issues including connection failures, congestion and traffic routing. The OSG Networking Area, in partnership with WLCG, is focused on being the primary source of networking information for its partners and constituents. It was established to ensure sites and experiments can better understand and fix networking issues, while providing an analytics platform that aggregates network monitoring data with higher level workload and data transfer services. This has been facilitated by the global network of the perfSONAR instances that have been commissioned and are operated in collaboration with WLCG Network Throughput Working Group. An additional important update is the inclusion of the newly funded NSF project SAND (Service Analytics and Network Diagnosis) which is focusing on network analytics. This paper describes the current state of the network measurement and analytics platform and summarises the activities taken by the working group and our collaborators. This includes the progress being made in providing higher level analytics, alerting and alarming from the rich set of network metrics we are gathering.

scholarly journals Improving WLCG Networks Through Monitoring and Analytics

2019 ◽  
Vol 214 ◽  
pp. 08006
Author(s):  
Marian Babik ◽  
Shawn McKee ◽  
Brian Paul Bockelman ◽  
Edgar Mauricio Fajardo Hernandez ◽  
Edoardo Martelli ◽  
...  
Keyword(s):  
Working Group ◽  
Network Performance ◽  
Network Measurement ◽  
Network Throughput ◽  
Critical Part ◽  
Support Unit ◽  
Traffic Routing ◽  
Current State ◽  
Network Usage ◽  
Effective Network

WLCG relies on the network as a critical part of its infrastructure and therefore needs to guarantee effective network usage and prompt detection and resolution of any network issues, including connection failures, congestion and traffic routing. OSG Networking Area in partnership with WLCG has focused on collecting, storing and making available all the network related metrics for further analysis and discovery of issues that might impact network performance and operations. In order to help sites and experiments better understand and fix the networking issues, WLCG Network Throughput working group was formed, which works on the analysis and integration of the network-related monitoring data collected by the OSG/WLCG infrastructure and operates a support unit to help find and fix the network performance issues. This paper describes the current state of the OSG network measurement platform and summarises the activities taken by the working group, including updates on the higher level services that were recently developed, network performance incidents investigated as well as past and present analytical activities related to networking and their results.

scholarly journals Development of a Flexible Software Solution for Controlling Unmanned Air Vehicles via the Internet

2018 ◽  
Vol 6 (1) ◽  
pp. 37-43 ◽  
Author(s):  
Deniss Brodņevs
Keyword(s):  
Long Range ◽  
Data Transfer ◽  
Line Of Sight ◽  
Unmanned Air Vehicles ◽  
Raspberry Pi ◽  
Transmitter Power ◽  
Flexible System ◽  
Mobile Cellular ◽  
Transfer Services ◽  
Air Vehicles

Abstract Remotely piloted operations of lightweight Unmanned Air Vehicles (UAV) are limited by transmitter power consumption and are always restricted to Line-of-Sight (LOS) distance. The use of mobile cellular network data transfer services (e.g. 3G HSPA and LTE) as well as long-range terrestrial links (e.g. LoraWAN) makes it possible to significantly extend the operation range of the remotely piloted UAV. This paper describes the development of a long-range communication solution for the UAV telemetry system. The proposed solution is based on (but not restricted to) cellular data transfer service and is implemented on Raspberry Pi under Gentoo Linux control. The goal of the project is to develop a flexible system for implementing optimized redundant network solutions for the Non-LOS remote control of the UAV

scholarly journals Historical Cultures Under Conditions of Deindustrialization Working Group Report

2020 ◽  
Vol 97 ◽  
pp. 180-184
Author(s):  
George Steve Jaramillo ◽  
Melinda Harlov-Csortán ◽  
Stefan Moitra ◽  
Roberta Garruccio
Keyword(s):  
Small Group ◽  
Working Group ◽  
Labor History ◽  
Global Network ◽  
Industrial Work ◽  
Economic Climate ◽  
Group Report ◽  
Contemporary Work

Crumbling smokestacks, shuttered furnaces, and abandoned quarries are all striking representations of deindustrialization. These and other images construct a discourse whose ideological undertones, far from confining them to the realm of symbolic nostalgia, have profound effects on contemporary societies. In 2015, within the European Labor History Network (ELHN), a working group on historical cultures of labor under conditions of deindustrialization (working group) began to critically study and reflect on this nascent theme. It grew from a small group of researchers to a network of academics across Europe and beyond. Though the study of deindustrialization is not new, contemporary work offers insights into the continuing struggle over the meaning of classical industrial work and its loss, revealing unresolved social, cultural, and political tensions. Yet, existing representations of deindustrialization have been criticized as “smokestack nostalgia.” In order to chart how we understand contemporary industrial decay in our political, cultural, and economic climate, the working group explores representations and more-than representations of loss and regeneration in deindustrialized regions, primarily in Europe but widening to include a growing global network.

scholarly journals From the global network of megalopolises to the political partitioning of the world: The guest-editor's introductory statement

2003 ◽  
Vol 70 (420/421) ◽  
pp. 134-136
Author(s):  
Calogero Muscarà
Keyword(s):  
Guest Editor ◽  
Urban Geography ◽  
Working Group ◽  
Global Network ◽  
The Political ◽  
Special Volume ◽  
Introductory Statement ◽  
The World ◽  
University Of Rome ◽  
The University

The author, guest-editor for the three double issues of this special volume of Ekistics, is Professor of Urban Geography at the University of Rome La Sapienza. He has been a member of the Commission Permanente de Géographie Politique chaired by Professor Jean Gottmann. He chaired the Working Group on Geography of Transport of the International Geographical Union from 1980-1988. Professor Muscarà's scientific interests have always focused on the epistemology of geography. He has researched issues on the geography of development and on regionalization, especially regarding its relationships to the dynamics of urbanization. Of his numerous publications, his latest book is on the paradox of federalism in Italy. He is a member of the World Society for Ekistics.

scholarly journals An important plesiosaur discovery from the Oxford Clay: how cooperation between science and industry is benefitting palaeontology

2015 ◽  
Author(s):  
Carl Harrington ◽  
Mark R Graham ◽  
Cliff Nicklin ◽  
Mark Wildman ◽  
Shona Tranter ◽  
...  
Keyword(s):  
Working Group ◽  
Primary Source ◽  
Scientific Study ◽  
Mature Individual ◽  
Public Display ◽  
Important Resource ◽  
Vertebrate Palaeontology ◽  
Set Up ◽  
Clay Formation ◽  
Marine Reptile

The Peterborough Member of the Oxford Clay Formation is renowned for its abundant and well preserved marine reptile fossils. In recent years, however, the primary source of these fossils, the brick making industry, has gone into serious decline – so much so that there is only one remaining working quarry in the Lower Oxford Clay and, with the future of UK brick manufacturing unclear, the importance of this quarry to vertebrate palaeontology should not be underestimated. The Oxford Clay Working Group (OCWG) was set up in 2011, in collaboration with the quarry owners, to collect, protect and document vertebrate fossils from this very important resource. Despite collecting unassociated fossils, particularly teeth and isolated bones, efforts to secure articulated or disarticulated skeletons have been hampered by modern quarrying techniques and a change of practice in excavating to the most productive levels. Here we report on a newly recovered, partially articulated plesiosaur skeleton representing a fully mature individual, which was saved because of the combined efforts of the OCWG in conjunction with both the quarry owners and employees. The specimen, which has been safely conserved and secured by the group, will be deposited into an accredited institution and so made available for scientific study and, perhaps, public display. It is planned that the skull block is CT scanned which may not only provide hitherto unknown data relative to Plesiosauroidea but may help, together with other skeletal elements, to solve anatomical and taxonomic problems within Cryptoclididae and, perhaps, Elasmosauridae.

The Contribution Of Waqf Institution As A Financial Tool In Addressing Poverty Reduction: Evidence From The Literature

2021 ◽  
pp. 151-178
Author(s):  
Haruna Tijjani Haruna ◽  
Abdulrazaq Suleiman Ibrahim
Keyword(s):  
Poverty Reduction ◽  
Islamic Law ◽  
Primary Source ◽  
Secondary Data ◽  
Vital Role ◽  
Regulatory Authorities ◽  
The Rich ◽  
The Government ◽  
Adequate Management ◽  
Insight Into

The paper reviewed the Waqf literature as a basis to analyze its contribution as a financial tool in addressing Poverty Reduction in Nigeria. The study is purely exploratory that relies on desktop research. The research uses previous studies for the analysis, which include news articles, government publications, and websites. The secondary data were obtained from the Holy Qur’an as the Primary source of Shari’ah (Islamic law), which were used to back most of the arguments put forward for the assessment of Waqf in the study area. The study concluded that Waqf played a vital role in reducing poverty in Nigeria. The study recommends the need of Waqf awareness to be created to enlighten the rich men in the society and also for the government to ensure proper and adequate management of Waqf institution. This will help Islamic value-centric policymakers, regulatory authorities, investors, and researchers to gain an overall insight into the potentials of Waqf as a financial tool in reducing poverty.

scholarly journals An important plesiosaur discovery from the Oxford Clay: how cooperation between science and industry is benefitting palaeontology

2015 ◽  
Author(s):  
Carl Harrington ◽  
Mark R Graham ◽  
Cliff Nicklin ◽  
Mark Wildman ◽  
Shona Tranter ◽  
...  
Keyword(s):  
Working Group ◽  
Primary Source ◽  
Scientific Study ◽  
Mature Individual ◽  
Public Display ◽  
Important Resource ◽  
Vertebrate Palaeontology ◽  
Set Up ◽  
Clay Formation ◽  
Marine Reptile

The Peterborough Member of the Oxford Clay Formation is renowned for its abundant and well preserved marine reptile fossils. In recent years, however, the primary source of these fossils, the brick making industry, has gone into serious decline – so much so that there is only one remaining working quarry in the Lower Oxford Clay and, with the future of UK brick manufacturing unclear, the importance of this quarry to vertebrate palaeontology should not be underestimated. The Oxford Clay Working Group (OCWG) was set up in 2011, in collaboration with the quarry owners, to collect, protect and document vertebrate fossils from this very important resource. Despite collecting unassociated fossils, particularly teeth and isolated bones, efforts to secure articulated or disarticulated skeletons have been hampered by modern quarrying techniques and a change of practice in excavating to the most productive levels. Here we report on a newly recovered, partially articulated plesiosaur skeleton representing a fully mature individual, which was saved because of the combined efforts of the OCWG in conjunction with both the quarry owners and employees. The specimen, which has been safely conserved and secured by the group, will be deposited into an accredited institution and so made available for scientific study and, perhaps, public display. It is planned that the skull block is CT scanned which may not only provide hitherto unknown data relative to Plesiosauroidea but may help, together with other skeletal elements, to solve anatomical and taxonomic problems within Cryptoclididae and, perhaps, Elasmosauridae.

scholarly journals From the global network of megalopolises to the political partitioning of the world: The guest-editor's introductory statement

2003 ◽  
Vol 70 (422/423) ◽  
pp. 262-264
Author(s):  
Calogero Muscarà
Keyword(s):  
Guest Editor ◽  
Urban Geography ◽  
Working Group ◽  
Global Network ◽  
The Political ◽  
Special Volume ◽  
Introductory Statement ◽  
The World ◽  
University Of Rome ◽  
The University

The author, guest-editor for the three double issues of this special volume of Ekistics, is Professor of Urban Geography at the University of Rome La Sapienza. He has been a member of the Commission Permanente de Géographie Politique chaired by Professor Jean Gottmann. He chaired the Working Group on Geography of Transport of the International Geographical Union from 1980-1988. Professor Muscarà's scientific interests have always focused on the epistemology of geography. He has researched issues on the geography of development and on regionalization, especially regarding its relationships to the dynamics of urbanization. Of his numerous publications, his latest book is on the paradox of federalism in Italy. He is a member of the World Society for Ekistics.

scholarly journals Development of algorithms of self-organizing network for reliable data exchange between autonomous robots

Dependability ◽  
2020 ◽  
Vol 20 (2) ◽  
pp. 35-42
Author(s):  
A. V. Ermakov ◽  
L. I. Suchkova
Keyword(s):  
Data Exchange ◽  
Overlay Networks ◽  
Data Transfer ◽  
Autonomous Robots ◽  
Global Network ◽  
Message Delivery ◽  
Network Nodes ◽  
Global Status ◽  
Network Status ◽  
Self Organizing

Factors affecting the reliability of data transmission in networks with nodes with periodic availability were considered. The principles of data transfer between robots are described; the need for global connectivity of communications within an autonomous system is shown, since the non-availability of information on the intentions of other robots reduces the effectiveness of the robotics system as a whole and affects the fault tolerance of a team of independent actors performing distributed activities. It is shown that the existing solutions to the problem of data exchange based on general-purpose IP networks have drawbacks; therefore, as the basis for organizing autonomous robot networks, we used developments in the domain of topological models of communication systems allowing us to build self-organizing computer networks. The requirements for the designed network for reliable message transfer between autonomous robots are listed, the option of organizing reliable message delivery using overlay networks, which expand the functionality of underlying networks, is selected. An overview of existing popular controlled and non-controlled overlay networks is given; their applicability for communication within a team of autonomous robots is evaluated. The features and specifics of data transfer in a team of autonomous robots are listed. The algorithms and architecture of the overlay self-organizing network were described by means of generally accepted methods of constructing decentralized networks with zero configurations. As a result of the work, general principles of operation of the designed network were proposed, the message structure for the delivery algorithm was described; two independent data streams were created, i.e. service and payload; an algorithm for sending messages between network nodes and an algorithm for collecting and synchronizing the global network status were developed. In order to increase the dependability and fault tolerance of the network, it is proposed to store the global network status at each node. The principles of operation of a distributed storage are described. For the purpose of notification on changes in the global status of the network, it is proposed to use an additional data stream for intra-network service messages. A flood routing algorithm was developed to reduce delays and speed up the synchronization of the global status of a network and consistency maintenance. It is proposed to provide network connectivity using the HELLO protocol to establish and maintain adjacency relations between network nodes. The paper provides examples of adding and removing network nodes, examines possible scalability problems of the developed overlay network and methods for solving them. It confirms the criteria and indicators for achieving the effect of self-organization of nodes in the network. The designed network is compared with existing alternatives. For the developed algorithms, examples of latency estimates in message delivery are given. The theoretical limitations of the overlay network in the presence of intentional and unintentional defects are indicated; an example of restoring the network after a failure is set forth.

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