In this work, we propose an abstract heat flow model which uses temperature information from onboard and ambient sensors, characterizes hot air recirculation based on these information, and accelerates the thermal eva...
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ISBN:
(纸本)9781424406111
In this work, we propose an abstract heat flow model which uses temperature information from onboard and ambient sensors, characterizes hot air recirculation based on these information, and accelerates the thermal evaluation process for high performance datacenters. This is critical to minimize energy costs, optimize computing resources, and maximize computation capability of the datacenters. Given a workload and thermal profile, obtained from various distributedsensors, we predict the resulting temperature distribution in a fast and accurate manner taking into account the recirculation characterization of a datacenter topology. Simulation results confirm our hypothesis that heat recirculation can be characterized as cross interference in our abstract heat flow model. Moreover fast thermal evaluation based on cross interference can be used in online thermal management to predict temperature distribution in real-time.
A prerequisite for secure communication between two sensor nodes is that the nodes should share a session key to bootstrap their trust relationship. The open problems are how to set up a session key between communicat...
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ISBN:
(纸本)3540380914
A prerequisite for secure communication between two sensor nodes is that the nodes should share a session key to bootstrap their trust relationship. The open problems are how to set up a session key between communicating nodes, and how to minimize any information about the keys disclosed to the other side during key agreement. Almost schemes one of the existing protocols cannot perfectly solve above problems due to some drawbacks. Accordingly, we propose a strong key pre-distribution scheme having the following merits. First, it supports authentication services. Second, as each node can only find w (=[W/2]) keys of secret keys (i.e. W) that shared with other side, without revealing the unshared key information, it substantially improves resilience of network against node capture. Our scheme is based on the MRS scheme. Performance and security analyses have proven that our scheme is suitable for sensor networks in terms of performance and security aspects.
Wireless Mesh Networks are envisioned to support the wired backbone with a wireless backbone for providing internet connectivity to residential areas and offices. Routing protocols designed for Mobile Adhoc Networks (...
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We discuss a general architectural approach to knowledge and information management and delivery in distributedsystems. Our approach is based on the recognition that time-stamped, streaming information message units ...
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High quality healthcare environment is an important aspect of modern society. We investigate security and networking architecture of clinical information system, with emphasis on the wireless hop which includes sensor...
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High quality healthcare environment is an important aspect of modern society. We investigate security and networking architecture of clinical information system, with emphasis on the wireless hop which includes sensor networks and wireless local area or mesh networks. We review confidentiality and integrity polices for clinical information systems and discuss the feasible enforcement mechanisms over wireless hop.
Many industrial applications rely on sensors and sensor networks residing on machinery, transport containers or in the environment. For distributed processes in such domains the sharing of those sensor networks is cru...
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Many industrial applications rely on sensors and sensor networks residing on machinery, transport containers or in the environment. For distributed processes in such domains the sharing of those sensor networks is crucial. This paper introduces a peer-to-peer (P2P) architecture for sharing services provided by existing sensor networks with any Internet based application. The differences between the sensor networks are abstracted using a service-oriented approach. The proposed technology is able to build up a global sensor Internet across multiple domain boundaries. Our implementation is evaluated with 300+ sensor nodes organized in a P2P network across continents.
As an example of sensory augmentation of a tiny object, a small cube-sized die is presented that perceives rolls and records what face it lands on. It is thus able to detect bias for unfair behaviour due to its physic...
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As an example of sensory augmentation of a tiny object, a small cube-sized die is presented that perceives rolls and records what face it lands on. It is thus able to detect bias for unfair behaviour due to its physical imperfections. On a deeper level, this case study demonstrates the integration of energy-efficient sensor fusion, combination of classifiers, and a wireless interface to adaptive classification heuristics.
In this paper we present a framework to provide dependability through accountability. Our proposal exploits the asymmetry present in the majority of sensor data processing to cheaply validate events and processing whi...
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In this paper we present a framework to provide dependability through accountability. Our proposal exploits the asymmetry present in the majority of sensor data processing to cheaply validate events and processing which occurs at various points in a distributed middleware system. We exemplify our framework with reference to two real-world distributed location middlewares. We adapt one of these to evaluate our framework and present performance results
In this paper, we proposed an approach for Quality of Service (QoS) routing algorithm of Wireless sensor Networks (WSNs) based on Ant Colony Optimization (ACO). The special characteristics of WSNs need to reduce the c...
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ISBN:
(纸本)3540380914
In this paper, we proposed an approach for Quality of Service (QoS) routing algorithm of Wireless sensor Networks (WSNs) based on Ant Colony Optimization (ACO). The special characteristics of WSNs need to reduce the computational complexity and energy consumption of the QoS routing algorithm especially. We note that ACO algorithm using collective intelligence of artificial ants as intelligent agents is very appropriate to solve the combinatorial optimization problems in a fully distributed way, so in this paper we use modified ACO approach to solve Delay Constraint Maximum Energy Residual Ratio (DCMERR) QoS routing problem of WSNs. The QoS routing solution proposed in this manuscript, which is named as ACO based QoS routing algorithm (ACO-QoSR), searches for the best paths, which are satisfied with the QoS requirements with intelligent artificial ants. To overcome the problem of limited energy in WSNs, there are some modifications to enhance ACO's convergence rate. ACO-QoSR algorithm is the tradeoff between a certain guaranteed QoS requirements and acceptable computational complexity. The simulation results verify that ACO-QoSR algorithm can reduce the selected paths' delay and improve the selected paths' normalized energy residual ratio at the similar levels of routing overhead.
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