We propose a control approach to transfer the population between selected quantum states in the non-Markovian open quantum system. this transfers, assisted by single qubit phase shift operations can generate universal...
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ISBN:
(纸本)9781424438723
We propose a control approach to transfer the population between selected quantum states in the non-Markovian open quantum system. this transfers, assisted by single qubit phase shift operations can generate universal logic gates for quantum computing. We find that the occupation probability behaves differently for different environmental conditions, such as the temperature and the ratio between the frequency of the quantum system of interest, and the cut-off frequency of Ohmic reservoir. We provide an active control over non-Markovian open quantum system for the quantum state engineering.
Neuromorphic computing is of worldwide interest. Compared to the von Neumann's computer architecture, neuromorphic systems offer advantages and novel approaches for artificial intelligence problems to be solved. I...
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ISBN:
(纸本)9788363578190
Neuromorphic computing is of worldwide interest. Compared to the von Neumann's computer architecture, neuromorphic systems offer advantages and novel approaches for artificial intelligence problems to be solved. Inspired by biology, neuromorphic systems adopt the theory of the human brain modeling by implementing neurons and synapses withthe help electronic devices and circuits. Many researchers developed new algorithms, learning approaches, models, etc., implement them into hardware to explore the neuromorphic system. However, many of the promising approaches concentrate on the realization not taking into account the feasibility for industrial or consumer application of the various concepts. Here, simulation and modeling methodologies are discussed with a bench of examples of different applications from well know domains, e.g. MEMS, IC, etc. An overview is given where and when the different approaches/methodologies makes sense, starting from scratch towards predictive simulations for detailed analysis and the needs for realization in mass production. Afterwards, discussion is continued towards neuromorphic computingsystems. In this paper we would like to draw the attention of the reader why it makes sense to use the support of such methods and why it is so important to push the development of simulation and modeling for neuromorphic computingsystems.
Topology control is an effective method to improve the energy efficiency of wireless sensor networks (WSNs). Traditional approaches are based on the assumption that a pair of nodes is either "connected" or &...
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ISBN:
(纸本)9781424431748
Topology control is an effective method to improve the energy efficiency of wireless sensor networks (WSNs). Traditional approaches are based on the assumption that a pair of nodes is either "connected" or "disconnected". these approaches are called connectivity-based topology control. In real environments however, there are many intermittently connected wireless links called lossy links. Taking a succeeded lossy link as an advantage, we are able to construct more energy-efficient topologies. Towards this end, we propose a novel opportunity-based topology control. We show that opportunity-based topology control is a problem of NP-hard. To address this problem in a practical way, we design a fully distributed algorithm called CONREAP based on reliability theory. We prove that CONREAP has a guaranteed performance. the worst running time is O(|E|) where E is the link set of the original topology, and the space requirement for individual nodes is O(d) where d is the node degree. To evaluate the performance of CONREAP we design and implement a prototype system consisting of 50 Berkeley Mica2 motes. We also conducted comprehensive simulations. Experimental results show that compared withthe connectivity-based topology control algorithms, CONREAP can improve the energy efficiency of a network up to 6 times.
Since TCP congestion control is ill-suited for high speed networks, designing a replacement for TCP has become a challenge. To address this problem, we extend the population ecology theory to design a novel congestion...
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ISBN:
(纸本)9781424431748
Since TCP congestion control is ill-suited for high speed networks, designing a replacement for TCP has become a challenge. To address this problem, we extend the population ecology theory to design a novel congestion control algorithm. We treat the network flows as the species in nature, the throughput of the flows as the population number and the bottleneck bandwidth as the, food resources. then we use the key idea of constructing population ecology models to develop a novel congestion control model, and implement the corresponding end-to-end transport protocol through measurement, which called Population Ecology TCP (PE-TCP). the theoretical analysis and simulation results validate that PE-TCP achieves high utilization, fast convergence, fair bandwidth allocation, and near-zero packet drops. these qualities are desirable for high speed networks.
the research of the commercialization of the smart home is very popular in recent years. Withthe development of Internet of things(IoT) and the cloud computing, Smart home products becomes more and more simple for co...
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ISBN:
(纸本)9781467397148
the research of the commercialization of the smart home is very popular in recent years. Withthe development of Internet of things(IoT) and the cloud computing, Smart home products becomes more and more simple for consumers. this paper introduces a systemthat can accelerate the process of commercialization of smart home system. Withthis smart home system, the consumer needn't consider about the configuration of the products when the product first join into the system. the consumers can controlthe products by chat software to avoid install various software. the system is implemented and tested in this paper at last.
We present an overview of an integrated low-power, lightweight, compact computing platform dedicated to addressing specific needs in sensing and actuation. the architecture includes an adaptive computing electronic de...
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ISBN:
(纸本)9781424400324
We present an overview of an integrated low-power, lightweight, compact computing platform dedicated to addressing specific needs in sensing and actuation. the architecture includes an adaptive computing electronic design (Chip) that supersedes the capabilities of present micro computing paradigms (micro-processors, micro-controllers, and DSPs) in the application domains of Process identification modelin, prediction, and real-time control. In particular, a domain of prominent applications is biological and medical measurements and stimulation.
the paper discuses the potential of the WebRTC in a multi-user video conference. All the signaling for multi-user video conferences is sustained by the XMPP server. Currently this technology is being deployed on Googl...
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ISBN:
(纸本)9781479946013
the paper discuses the potential of the WebRTC in a multi-user video conference. All the signaling for multi-user video conferences is sustained by the XMPP server. Currently this technology is being deployed on Google Chrome, Opera and Firefox web-browsers. Without a standardized solution, service providers can implement various types of architectures. In this paper we propose a multi-video web conference solution that works in other browsers along with Firefox, Opera and Google Chrome. XMPP server is used as a signaling and transporting protocol.
Traditional replication protocols that arrange logically the replicas into a tree structure have reasonable availability, low communication costs but induce high system load. We propose in this paper the arbitrary pro...
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ISBN:
(纸本)9781424431748
Traditional replication protocols that arrange logically the replicas into a tree structure have reasonable availability, low communication costs but induce high system load. We propose in this paper the arbitrary protocol: a tree-based replica control protocol that can be configured based on the frequencies of read and write operations in order to provide lower system load than existing tree replication protocols, yet with comparable cost and availability. Our protocol enables the shifting from one configuration into another by just modifying the structure of the tree. there is no need to implement a new protocol whenever the frequencies of read and write operations change. At the heart of our protocol lies the new idea of logical and physical levels in a tree. In short, read operations are carried out on all physical node of even, physical level of the tree whereas the write operation is performed on all physical nodes of a single physical level of the tree. We discuss optimal configurations, proving in particular a new lower bound, of independent interest, for the case of a binary tree.
Although by default the Network Simulator 2 (NS2) [1] does not implement the IEEE 802.16 networks, a few patches are available, that provide WiMAX specifications at different fidelity level. the ns2 environment is use...
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ISBN:
(纸本)9781424457373
Although by default the Network Simulator 2 (NS2) [1] does not implement the IEEE 802.16 networks, a few patches are available, that provide WiMAX specifications at different fidelity level. the ns2 environment is useful for system-level evaluation, but mainly with respect to wired networks. In order to provide an adequate QoS provisioning to different service flows and to prevent base station (BS) from running out of resources an appropriate connection admission control (CAC) algorithms needs to be considered. Since the introduction of IEEE 802.16e standard a lot of studies have focused on development of CAC[2-7]. In this paper we present the ns-2 module with integrated Connection Admission control support. Currently three admission control algorithms based on so called guard channel were implemented. In the final sections authors show the CAC performance as well as influence of various turbo-FEC schemes deployed in physical layer on the system level performance. Especially it is found that the nb-LDPC codes provide link level solution able to improve system level quality metrics.
this paper presents a MPC theory based Multi-Objective Vehicular Adaptive Cruise controlsystemthat can comprehensively address issues of tracking capability, fuel economy and driver desired response. A hierarchical ...
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ISBN:
(纸本)9781424438723
this paper presents a MPC theory based Multi-Objective Vehicular Adaptive Cruise controlsystemthat can comprehensively address issues of tracking capability, fuel economy and driver desired response. A hierarchical control architecture is utilized in which a lower controller compensates for nonlinear vehicle dynamics and enables tracking of desired acceleration. the upper controller is designed using model predictive controltheory. A cost function is developed that considers the contradictions between tracking error, fuel consumption and driver characteristics while driver longitudinal ride comfort, driver permissible tracking range and rear-end safety are formulated as I/O constraints. Employing a "constraint softening" method to avoid computing infeasibility problems, a control law is developed and implemented using a numerical optimization algorithm. Detailed simulations show that the developed controlsystem provides significant benefits in terms of fuel economy, vehicle safety and tracking capability while at the same time also satisfying driver desired car following characteristics.
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