Real-time visual communication to aid disaster recovery in a multi-segment hybrid wireless networking system

2012 ◽  
Author(s):  
Tawfik Al Hadhrami ◽  
Qi Wang ◽  
Christos Grecos
Keyword(s):  
Real Time ◽  
Visual Communication ◽  
Disaster Recovery ◽  
Wireless Networking

Soldier photography: visualising the war in Iraq

2009 ◽  
Vol 35 (4) ◽  
pp. 817-833 ◽  
Author(s):  
LIAM KENNEDY
Keyword(s):  
Real Time ◽  
Visual Communication ◽  
The Internet ◽  
Photographic Images ◽  
Historical Significance ◽  
The Everyday ◽  
War In Iraq ◽  
Digital Generation ◽  
Everyday Experiences ◽  
The Way

AbstractThis article focuses on the production and dissemination of photographic images by serving US soldiers in Iraq who are photographing their experiences and posting them on the Internet. This form of visual communication – in real time and communal – is new in the representation of warfare; in earlier wars soldiers took photographs, but these were not immediately shared in the way websites can disseminate images globally. This digital generation of soldiers exist in a new relationship to their experience of war; they are now potential witnesses and sources within the documentation of events, not just the imaged actors – a blurring of roles that reflects the correlations of revolutions in military and media affairs. This photography documents the everyday experiences of the soldiers and its historical significance may reside less in the controversial or revelatory images but in more mundane documentation of the environments, activities and feelings of American soldiery at war.

A Novel Hash Chain-Based Data Availability Monitoring Method for Off-site Disaster Recovery Architecture

2021 ◽  
pp. 2150294
Author(s):  
Neng Huang ◽  
Junxing Zhu ◽  
Chaonian Guo ◽  
Shuhan Cheng ◽  
Xiaoyong Li
Keyword(s):  
Information Systems ◽  
Real Time ◽  
Data Center ◽  
Disaster Recovery ◽  
Distributed Storage ◽  
Data Availability ◽  
Data Consistency ◽  
Real Time Monitoring ◽  
The Real ◽  
Hash Chain

With the rapid development of mobile Internet, there is a higher demand for the real-time, reliability and availability of information systems and to prevent the possible systemic risks of information systems, various business consistency standards and regulatory guidelines have been published, such as Recovery Time Object (RTO) and Recovery Point Object (RPO). Some of the current related researches focus on the standards, methods, management tools and technical frameworks of business consistency, while others study the data consistency algorithms in the cases of large data, cloud computing and distributed storage. However, few researchers have studied on how to monitor the data consistency and RPO of production-disaster recovery, and what architecture and technology should be applied in the monitoring. Moreover, in some information systems, due to the complex structures and distributions of data, it is difficult for traditional methods to quickly detect and accurately locate the first error data. Besides, due to the separation of production data center (PDC) and disaster recovery data center (DRDC), it is difficult to calculate the data difference and RPO between the two centers. This paper first discusses the architecture of remote distributed DRDCs. The architecture can make the disaster recovery (DR) system always online and the data always readable, and support the real-time monitoring of data availability, consistency as well as other related indicators, in this way to make DRDC out-of-the-box in disasters. Second, inspired by blockchain, this paper proposes a method to realize real-time monitoring of data consistency and RTO by building hash chains for PDC and DRDC. Third, this paper evaluates the hash chain operations from the algorithm time complexity, the data consistency, and the validity of RPO monitoring algorithms and since DR system is actually a kind of distributed system, the proposed approach can also be applied to the data consistency detection and data difference monitoring in other distributed systems.

Quintet.net: An Environment for Composing and Performing Music on the Internet

Leonardo ◽  
2005 ◽  
Vol 38 (1) ◽  
pp. 23-30 ◽  
Author(s):  
Georg Hajdu
Keyword(s):  
Full Advantage ◽  
Real Time ◽  
Virtual Environment ◽  
Visual Communication ◽  
The Internet ◽  
Local Networks ◽  
Client Server ◽  
Interactive Environment ◽  
And Performance

Quintet.net is a real-time interactive environment for intermedial composition and performance on local networks as well as the Internet. Since its premiere in 2000, the environment has been used in several large projects connecting players in Europe and the U.S.A., a Munich biennale opera project among them. Quintet.net implements, in a virtual environment, the metaphor of five performers under the control of a conductor, thus dealing with important aspects of symbolic, aural and visual communication among the participants and the network audience. A composition development kit has been added to the environment (which consists of Client, Server, Listener, Conductor and Viewer) to facilitate the development of pieces that take full advantage of the wide continuum between composition and improvisation.

Research on the Model of Intelligence Redundancy Gateway System

2012 ◽  
Vol 241-244 ◽  
pp. 1688-1693
Author(s):  
Hong Yao Ju ◽  
Xin Wang
Keyword(s):  
Real Time ◽  
Early Warning ◽  
Remote Monitoring ◽  
Disaster Recovery ◽  
System Model ◽  
Control Technology ◽  
High Service ◽  
Gateway System ◽  
And Control ◽  
Improve Access

It is one of key elements, which makes network high service and stability, to improve intelligent degree and automatic disaster recovery capability of access gateway system .Working state remote monitoring of access gateway, management and control technology are studied, including remote collection and analysis of gateway working state, realizing integration with management and control technology of power, solving working state real time monitoring of access gateway and automatic disaster recovery. Therefore, intelligent auto-control of access gateway system is realized. With system test, the intelligent redundancy gateway system model can improve access gateway early warning and disaster recovery ability obviously.

Concept for Real-Time Wireless Networking of Mobile CPS Based on LTE

2016 ◽  
Vol 1140 ◽  
pp. 529-536
Author(s):  
Philipp Neher ◽  
Armin Lechler
Keyword(s):  
Wireless Communication ◽  
Real Time ◽  
Communication System ◽  
Wireless Networking ◽  
Cyber Physical Systems ◽  
Adaptive Streaming ◽  
Physical Systems ◽  
Wireless Communication System ◽  
Technical Requirements ◽  
Smart Factories

In the future smart factories will satisfy the demand of highly customized products. Stationary and mobile cyber-physical systems (CPS), as part of smart factories will exchange various information. Most of that will happen wirelessly. Out of that reason, a concept for real-time wireless networking of mobile CPS based on LTE is presented in this paper. Through a combination of LTE with GPS and adaptive streaming schemes, a real-time capable wireless communication system seems possible. The paper specifies further the necessary and targeted technical requirements of industrial communication for mobile CPS. It concluded with methods to test, evaluate and validate the communication system.

scholarly journals Design of Reliable Disaster Recovery System through Integrated Server Redundancy

2021 ◽  
Vol 12 (6) ◽  
pp. 674-679
Author(s):  
Bong-Hyun Kim
Keyword(s):  
Real Time ◽  
Local Governments ◽  
Disaster Recovery ◽  
Design Method ◽  
The United States ◽  
Active Storage ◽  
Recovery System ◽  
September 11 Terrorist Attacks ◽  
The Stability ◽  
Disaster Recovery System

Even before the September 11 terrorist attacks in the United States in 2001, information systems prepared against disasters in Korea were extremely weak. However, as various domestic and foreign accident cases have occurred, it is recognized that preparations for this are necessary. Accordingly, at present, each institution has prepared and implemented various backup policies to protect the institution's information and data in case of disaster. Therefore, in this paper, we conducted a study to design a more stable and efficient disaster recovery system by building redundancy for server operating in integrated data center. To do this, we analyzed the redundancy design for the integrated disaster recovery server and designed the overall system configuration. Also, the design results were analyzed by testing web server redundancy and switch redundancy. In this paper, the proposed design method for stabilization and efficiency of disaster recovery system is the redundant construction of integrated server and switch. In other words, the disaster recovery system was composed of active storage and standby storage, and data stabilization was promoted through real-time replication of each other. In the existing disaster recovery system, there is a problem in stabilizing replication because there is no monitoring system for internal replication between storage arrays. To solve this problem, we designed a system that replicates all data in active storage to standby storage in real time and monitors the replication status. Therefore, introducing service conversion automation from the main system, which is the method designed in this paper, to the disaster recovery system, improves the stability and reliability of the service of the local governments, so that it is possible to operate a more efficient and advanced disaster recovery system.

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