Learn More
We present the design, implementation, and evaluation of PROMISE, a novel peer-to-peer media streaming system encompassing the key functions of peer lookup, peer-based aggregated streaming, and dynamic adaptations to network and peer conditions. Particularly, PROMISE is based on a new application level P2P service called <i>CollectCast</i>. CollectCast(More)
We present CollectCast, a peer-to-peer (P2P) service for media streaming where a receiver peer is served by multiple sender peers. CollectCast operates at the application level but infers underlying network properties to correlate end-to-end connections between peers. The salient features of CollectCast include: (1) a novel multisender selection method that(More)
We study data integrity verification in peer-to-peer media streaming for content distribution. Challenges include the timing constraint of streaming as well as the untrustworthiness of peers. We show the inadequacy of existing data integrity verification protocols, and propose Block-Oriented Probabilistic Verification (BOPV), an efficient protocol utilizing(More)
— TCP connection throughput is inversely proportional to the connection Round Trip Time (RTT). To mitigate TCP bias to short RTT connections, a differentiated services traffic conditioner can ensure connections with long RTTs do not starve when connections with short RTTs get all extra resources after achieving the target rates. Current proposals for(More)
Robotic skin with embedded pressure, temperature, and distance sensors are increasingly useful in safe and intuitive human-robot collaboration scenarios. Design problems for distributed arrays of skin sensors. Such as placement, optimizing resolution, networking, and use in feedback loops are difficult to solve, and highly dependent on the application. In(More)
— We propose a service differentiated peer selection mechanism for peer-to-peer media streaming systems. The mechanism provides flexibility and choice in peer selection to the contributors of the system, resulting in high quality streaming sessions. Free-riders are given limited options in peer selection, if any, and hence receive low quality streaming. The(More)
Denial of Service (DoS) attacks are a serious threat for the Internet. DoS attacks can consume memory, CPU, and network resources and damage or shut down the operation of the resource under attack (victim). The quality of service (QoS) enabled networks, which offer different levels of service, are vulnerable to QoS attacks as well as DoS attacks. The aim of(More)
Continuous monitoring of a network domain poses several challenges. First, routers of a network domain need to be polled periodically to collect statistics about delay, loss, and bandwidth. Second, this huge amount of data has to be mined to obtain useful monitoring information. This increases the overhead for high speed core routers, and restricts the(More)
We recently found that sAPPα decreases amyloid-beta generation by directly associating with β-site amyloid precursor protein (APP)-converting enzyme 1 (BACE1), thereby modulating APP processing. Because inhibition of BACE1 decreases glycogen synthase kinase 3 beta (GSK3β)-mediated Alzheimer's disease (AD)-like tau phosphorylation in AD patient-derived(More)