Testbed

About: Testbed is a research topic. Over the lifetime, 10858 publications have been published within this topic receiving 147147 citations. The topic is also known as: test bed.

MULTIPLATFORM testbed: an integration platform for multimodal dialog systems

Abstract: Modern dialog and information systems are increasingly based on distributed component architectures to cope with all kinds of heterogeneity and to enable flexible re-use of existing software components. This contribution presents the MULTIPLATFORM testbed as a powerful framework for the development of integrated multimodal dialog systems. The paper provides a general overview of our approach and explicates its foundations. It describes advanced sample applications that have been realized using the integration platform and compares our approach to related works.

End-to-end Routing for Dual-Radio Sensor Networks

Abstract: Dual-radio, dual-processor nodes are an emerging class of Wireless Sensor Network devices that provide both low- energy operation as well as substantially increased computational performance and communication bandwidth for applications. In such systems, the secondary radio and processor operates with sufficiently low power that it may remain always vigilant, while the the main processor and primary, high-bandwidth radio remain off until triggered by the application. By exploiting the high energy efficiency of the main processor and primary radio along with proper usage, net operating energy benefits are enabled for applications. The secondary radio provides a constantly available multi-hop network, while paths in the primary network exist only when required. This paper describes a topology control mechanism for establishing an end-to-end path in a network of dual-radio nodes using the secondary radios as a control channel to selectively wake up nodes along the required end-to-end path. Using numerical models as well as testbed experimentation, we show that our proposed mechanism provides significant energy savings of more than 60% compared to alternative approaches, and that it incurs only moderately greater application latency.

Fogbed: A Rapid-Prototyping Emulation Environment for Fog Computing

Abstract: The fog computing paradigm extends cloud resources near data sources to overcome limitations of cloud-based IoT centralized architectures. Its involve the running of services and applications on the nodes between the IoT devices and the cloud. The prototyping and testing of these distributed software is challenging due to the fact that not only the fog service has to be tested but also its integration with management systems. Despite recent advances in fog platforms, there exists no readily available testbed which can help researchers to design and test real world fog applications. To this purpose, network simulators and cloud middleware are adapted to enable the investigation of fog solutions. This paper presents Fogbed, a framework and toolset integration for rapid prototyping of fog components in virtualized environments. Using a desktop approach, Fogbed enables the deployment of fog nodes as software containers under different network configurations. Its design meets the requirements of low cost, flexible setup and compatibility with real world technologies. Unlike current approaches, the proposed framework allows for the testing of fog components with third-party systems through standard interfaces. A scheme to observe the behavior of the environment is provided. A case study is presented to demonstrate a fog service analysis. In addition, future developments and research directions are discussed.

Real-Time Geographic Visualization of World Wide Web Traffic.

Abstract: The rapid growth of the World Wide Web (WWW) is well documented, with WWW sites now advertised in magazines, newspapers, and television commercials Given current use of the WWW for scientific and educational information sharing and its emerging use for electronic commerce, studying access patterns is an important first step in understanding network implications and in designing future generations of WWW servers that can accommodate new media types and interaction modes Due in large part to early development of the Mosaic WWW browser by the National Center for Supercomputing Applications (NCSA), the access load on the NCSA WWW server remains extremely high Using the NCSA WWW server as a high load testbed, we describe Avatar , a virtual reality system for real-time analysis and mapping of WWW server accesses to their point of geographic origin on various projections of the Earth As HTTP protocols expand to demographic data, the Avatar architecture can be extended to correlate this data as well

EPIC: An Electric Power Testbed for Research and Training in Cyber Physical Systems Security

Abstract: Testbeds that realistically mimic the operation of critical infrastructure are of significant value to researchers. One such testbed, named Electrical Power and Intelligent Control (EPIC), is described in this paper together with examples of its use for research in the design of secure smart-grids. EPIC includes generation, transmission, smart home, and micro-grid. EPIC enables researchers to conduct research in an active and realistic environment. It can also be used to understand the cascading effects of failures in one Industrial Control System (ICS) on another, and to assess the effectiveness of novel attack detection algorithms. Four feasible attack scenarios on EPIC are described. Two of these scenarios, demonstrated on EPIC, namely a power supply interruption attack and a physical damage attack, and possible mitigation, are also described.