In the last several years we witnessed the proliferation of multimedia applications on the Internet. One of the unavoidable techniques to support this type of communication is multicasting. However, even a decade after its initial proposal, multicast is still not widely deployed. One of the reasons is the lack of a solid business model. If the gain and the cost of multicast could be predicted, ...

Torres Guerra, Ruben Dario Ph.D., Purdue University, December 2011. MeasurementDriven Characterization of Emerging Trends in Internet Content Delivery . Major Professor: Sanjay G. Rao. In the last decade, there have been radical changes in both the nature of the mechanisms used for Internet content distribution, and the type of content delivered. On the one hand, Peer-to-Peer (P2P) based conten...

Today, large-scale web services run on complex systems, spanning multiple data centers and content distribution networks, with performance depending on diverse factors in end systems, networks, and infrastructure servers. Web service providers have many options for improving service performance, varying greatly in feasibility, cost and benefit, but have few tools to predict the impact of these ...

P2P and cloud computing are two of the latest trend in the Internet arena. They could both be labeled as “large-scale distributed systems”, yet their approach is completely different: based on completely decentralized protocols exploiting edge resources the former, focusing on huge data centers the latter. Several Internet startups have quickly reached stardom by exploiting cloud resources, unl...

This paper discusses a new way to solve the Vehicles Routing Problem (VRP) of logistics with the use of Taboo Search Algorithms (TSA) and optimize the new way and the distribution center based on Genetic Algorithms (GA). This study focuses on the incorporating of sugar industry and Milled Rice distribution center management in Thailand for the export channel. This provides a systematic and fram...

N-body simulations of dark matter halos show that the density profiles of halos behave as ρ(r) ∝ r−α(r), where the density logarithmic slope α ≃ 1 ∼ 1.5 in the center and α ≃ 3 ∼ 4 in the outer parts of halos. However, some observations are not in agreement with simulations in the very central region of halos. The simulations also show that velocity dispersion anisotropy parameter β ≈ 0 in the ...

Introduction 2 Background 3 An optimized power distribution system 4 Alternative power distribution approaches 11 Conclusion 14 Resources 15 Click on a section to jump to it Contents White Paper 129 Significant improvements in efficiency, power density, power monitoring, and reconfigurability have been achieved in data center power distribution. The past techniques of massive transformer-based ...

We present a case study of a early-type galaxy (ETG) hosting a kinematically distinct core (KDC) formed in a binary high resolution 1:1 spiral galaxy merger simulation. The runtime of the simulation is pushed up to 10 Gyr to follow the complete evolution of various physical properties. To investigate the origin of the KDC, the stellar component residing within the KDC is dissected, revealing th...

We discuss violation of Bell inequalities by the regularized Einstein-PodolskyRosen (EPR) state, which can be produced in a quantum optical parametric downconversion process. We propose an experimental photodetection scheme to probe nonlocal quantum correlations exhibited by this state. Furthermore, we show that the correlation functions measured in two versions of the experiment are given dire...

During the recent rise and subsequent fall of the internet bubble, a new computer system design model emerged, primarily from venture capital start-ups. Bladed Systems, dense arrays of single board computers housed in a common chassis, seemed a promising way for service providers to keep pace with the anticipated dot.com inspired build-out. The blades were dense, low bandwidth and low in comput...