38,994 research outputs found
Communities' practices of promoting sexual and reproductive health and other knowledge in Mozambique
Analyzing Peer Selection Policies for BitTorrent Multimedia On-Demand Streaming Systems in Internet
The adaptation of the BitTorrent protocol to multimedia on-demand streaming
systems essentially lies on the modification of its two core algorithms, namely
the piece and the peer selection policies, respectively. Much more attention
has though been given to the piece selection policy. Within this context, this
article proposes three novel peer selection policies for the design of
BitTorrent-like protocols targeted at that type of systems: Select Balanced
Neighbour Policy (SBNP), Select Regular Neighbour Policy (SRNP), and Select
Optimistic Neighbour Policy (SONP). These proposals are validated through a
competitive analysis based on simulations which encompass a variety of
multimedia scenarios, defined in function of important characterization
parameters such as content type, content size, and client interactivity
profile. Service time, number of clients served and efficiency retrieving
coefficient are the performance metrics assessed in the analysis. The final
results mainly show that the novel proposals constitute scalable solutions that
may be considered for real project designs. Lastly, future work is included in
the conclusion of this paper.Comment: 19 PAGE
PRHOLO: 360Âș Interactive Public Relations
In the globalized world, possessing good products may not be enough to reach potential clients unless
creative marketing strategies are well delineated. In this context, public relations are also important
when it comes to capture the clientâs attention, making the first contact between the clients and the companyâs products, while being persuasive enough to make them confident that the company has the right
products to fit their needs. Three virtual public relations installations were purposed in this chapter,
combining technology with a human like public relations ability, capable of interacting with potential
clients located in front of the installation, at angles of up to 57Âș (degrees), 180Âș and 360Âș, respectively.
From one to several Microsoft Kinects were used to develop the three interaction models, which allows
tracking and recognition of usersâ gestures and positions (heat map), sound sources, voice commands
and face and body extraction of the user interacting with the installation.info:eu-repo/semantics/publishedVersio
Modelos matemĂĄticos em dinĂąmica de populaçÔes e estatĂsticas
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Florianópolis, 1981
Overconfidence and excess entry: a comparison between students and managers
Overconfidence can lead to excessive business entry. Here we replicate the pioneer experiment finding this nexus (Camerer and Lovallo 1999) and extend it in two major directions: (1) to consider managers as well as student subjects and (2) to explicitly take into account selected characteristics of the manager subjects. We find that managers are more prone to the nexus overconfidence-excess entry than students are. In particular, we find that left-handed, married, and emotionally aroused managers are more prone to excess entry.excess business entry, overconfidence, unrealistic optimism
Improving BitTorrent's Peer Selection For Multimedia Content On-Demand Delivery
The great efficiency achieved by the BitTorrent protocol for the distribution
of large amounts of data inspired its adoption to provide multimedia content
on-demand delivery over the Internet. As it is not designed for this purpose,
some adjustments have been proposed in order to meet the related QoS
requirements like low startup delay and smooth playback continuity.
Accordingly, this paper introduces a BitTorrent-like proposal named as
Quota-Based Peer Selection (QBPS). This proposal is mainly based on the
adaptation of the original peer-selection policy of the BitTorrent protocol.
Its validation is achieved by means of simulations and competitive analysis.
The final results show that QBPS outperforms other recent proposals of the
literature. For instance, it achieves a throughput optimization of up to 48.0%
in low-provision capacity scenarios where users are very interactive.Comment: International Journal of Computer Networks & Communications(IJCNC)
Vol.7, No.6, November 201
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