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Hazardous Materials Tags > Tag based links for Capacity

The following links have been tagged capacity by users just like you, because these resources are off-site we cannot guarantee the accuracy or quality of any third-party information.

  1. A capacity analysis for the IEEE 802.11 MAC protocol: Wirel. Netw., Vol. 7, No. 2. (2001), pp. 159-171.YC Tay, KC Chua

    Source: Wirel. Netw., Vol. 7, No. 2. (2001), pp. 159-171.

  2. Mobility increases the capacity of ad hoc wireless networks: IEEE/ACM Trans. Netw., Vol. 10, No. 4. (August 2002), pp. 477-486.Matthi as Grossglauser, David Tse

    Source: IEEE/ACM Trans. Netw., Vol. 10, No. 4. (August 2002), pp. 477-486.

  3. The capacity of wireless networks: Information Theory, IEEE Transactions on, Vol. 46, No. 2. (2000), pp. 388-404.When n identical randomly located nodes, each capable of transmitting at W bits per second and using a fixed range, form a wireless network, the throughput ?(n) obtainable by each node for a randomly chosen destination is ?(W/?(nlogn)) bits per second under a noninterferenc e protocol. If the nodes are optimally placed in a disk of unit area, traffic patterns are optimally assigned, and each transmission's range is optimally chosen, the bit-distance product that can be transported by the network per second is ?(W?An) bit-meters per second. Thus even under optimal circumstances, the throughput is only ?(W/?n) bits per second for each node for a destination nonvanishingly far away. Similar results also hold under an alternate physical model where a required signal-to-inte rference ratio is specified for successful receptions. Fundamentally, it is the need for every node all over the domain to share whatever portion of the channel it is utilizing with nodes in its local neighborhood that is the reason for the constriction in capacity. Splitting the channel into several subchannels does not change any of the results. Some implications may be worth considering by designers. Since the throughput furnished to each user diminishes to zero as the number of users is increased, perhaps networks connecting smaller numbers of users, or featuring connections mostly with nearby neighbors, may be more likely to be find acceptanceP Gupta, PR Kumar

    Source: Information Theory, IEEE Transactions on, Vol. 46, No. 2. (2000), pp. 388-404.

  4. Capacity of multi-channel wireless networks: impact of number of channels and interfaces: (2005), pp. 43-57.Pradeep Kyasanur, Nitin Vaidya

    Source: (2005), pp. 43-57.

  5. The nominal capacity of wireless mesh networks: Wireless Communications , IEEE [see also IEEE Personal Communications ], Vol. 10, No. 5. (2003), pp. 8-14.Wireless mesh networks are an alternative technology for last-mile broadband Internet access. In WMNs, similar to ad hoc networks, each user node operates not only as a host but also as a router; user packets are forwarded to and from an Internet-conne cted gateway in multihop fashion. The meshed topology provides good reliability, market coverage, and scalability, as well as low upfront investments. Despite the recent startup surge in WMNs, much research remains to be done before WMNs realize their full potential. This article tackles the problem of determining the exact capacity of a WMN. The key concept we introduce to enable this calculation is the bottleneck collision domain, defined as the geographical area of the network that bounds from above the amount of data that can be transmitted in the network. We show that for WMNs the throughput of each node decreases as O(1/n), where n is the total number of nodes in the network. In contrast with most existing work on ad hoc network capacity, we do not limit our study to the asymptotic case. In particular, for a given topology and the set of active nodes, we provide exact upper bounds on the throughput of any node. The calculation can be used to provision the network, to ensure quality of service and fairness. The theoretical results are validated by detailed simulations.Ja ngeun Jun, ML Sichitiu

    Source: Wireless Communications, IEEE [see also IEEE Personal Communications], Vol. 10, No. 5. (2003), pp. 8-14.

  6. Working Memory Capacity (Essays in Cognitive Psychology): (16 September 2005)The idea of one's memory "filling up" is a humorous misconception of how memory in general is thought to work; it is actually has no capacity limit. However, the idea of a "full brain" makes more sense with reference to working memory, which is the limited amount of information a person can hold temporarily in an especially accessible form for use in the completion of almost any challenging cognitive task. This groundbreaking book explains the evidence supporting Cowan's theoretical proposal about working memory capacity, and compares it to competing perspectives. Cognitive psychologists profoundly disagree on how working memory is limited: whether by the number of units that can be retained (and, if so, what kind of units and how many?), the types of interfering material, the time that has elapsed, some combination of these mechanisms, or none of them. The book assesses these hypotheses and examines explanations of why capacity limits occur, including vivid biological, cognitive, and evolutionaryac counts. The book concludes with a discussion of the practical importance of capacity limits in daily life.Incorpora ting the latest from the recent surge in research into working memory capacity limits and the remarkable new insights provided by neuroimaging techniques, this book serves as an invaluable resource for all memory researchers and is accessible to a wide range of readers.Nelson Cowan

    Source: (16 September 2005)

  7. Decline in verbal memory in non-demented older adults: Journal of Clinical and Experimental Neuropsycholog y (Neuropsycholo gy, Developm, Vol. 29, No. 7. (October 2007), pp. 706-718.Cargin , J Weaver, Maruff, , Collie, , Shafiq-Antonac ci, , Masters,

    Source: Journal of Clinical and Experimental Neuropsychology (Neuropsychology, Developm, Vol. 29, No. 7. (October 2007), pp. 706-718.

  8. A central capacity limit to the simultaneous storage of visual and auditory arrays in working memory.: J Exp Psychol Gen, Vol. 136, No. 4. (November 2007), pp. 663-684.If working memory is limited by central capacity (e.g., the focus of attention; N. Cowan, 2001), then storage limits for information in a single modality should apply also to the simultaneous storage of information from different modalities. The authors investigated this by combining a visual-array comparison task with a novel auditory-array comparison task in 5 experiments. Participants were to remember only the visual, only the auditory (unimodal memory conditions), or both arrays (bimodal memory conditions). Experiments 1 and 2 showed significant dual-task tradeoffs for visual but not for auditory capacity. In Experiments 3-5, the authors eliminated modality-speci fic memory by using postperceptual masks. Dual-task costs occurred for both modalities, and the number of auditory and visual items remembered together was no more than the higher of the unimodal capacities (visual: 3-4 items). The findings suggest a central capacity supplemented by modality- or code-specific storage and point to avenues for further research on the role of processing in central storage. (PsycINFO Database Record (c) 2007 APA, all rights reserved).J Scott Saults, Nelson Cowan

    Source: J Exp Psychol Gen, Vol. 136, No. 4. (November 2007), pp. 663-684.

  9. Unexpected costs of high working memory capacity following directed forgetting and contextual change manipulations: Memory & Cognition, Vol. 35, No. 5. (July 2007), pp. 1074-1082.Dela ney, F Peter, Sahakyan, Lili

    Source: Memory & Cognition, Vol. 35, No. 5. (July 2007), pp. 1074-1082.

  10. Trust decides against legal action to force girl to receive heart transplant: BMJ, Vol. 337, No. nov12_1. (12 November 2008), a2526.10.1136/ bmj.a2526Clare Dyer

    Source: BMJ, Vol. 337, No. nov12_1. (12 November 2008), a2526.

If you would like to find additional social bookmark based links on the topic of capacity we recommend the Open Tag Directory > Capacity. If you would like to find related tags we recommend Tag Patterns > Capacity.


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