Justin Goshi

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Stream merging is a technique for efficiently delivering popular media-on-demand using multicast and client buffers. Recently, several algorithms for stream merging have been proposed, and in this paper we perform a comprehensive comparison of these algorithms. We present the differences in philosophy and mechanics among the various algorithms and(More)
We address the problem of designing efficient solutions for media-on-demand in systems that use stream merging. In a stream merging system, the receiving bandwidth of clients is larger than the playback bandwidth and clients can buffer parts of the transmission to be played back later. Intelligent use of these resources allows bandwidth usage to be reduced(More)
Measurements of serum concentrations of free T4, T3, TSH, and thyroglobulin (Tg) were conducted in 42 infants (2-9 months of age) detected and treated through the Northwest Newborn Regional Screening Program and 63 children and adolescents (1-18 yr of age) with congenital hypothyroidism (CH) detected and managed in the Northern California Kaiser Permanente(More)
We study the application of unequal loss protection (ULP) algorithms to motion-compensated video over lossy packet networks. In particular, we focus on streaming video applications over the Internet. The original ULP framework applies unequal amounts of forward error correction to embedded data to provide graceful degradation of quality in the presence of(More)
In Recent years, secure communications have become a important subject of research. The new service for wireless and wired networks is to provide confidentiality, authentication, authorization and data integrity. Security has always been a sensitive issue. In fact, this service becomes necessary to protect basic applications, especially E-commerce and bank(More)
We study the problem of multicast key distribution for group security. Secure group communication systems typically rely on a group key, which is a secret shared among the members of the group. This key is used to provide privacy by encrypting all group communications. Because groups can be large and highly dynamic, it becomes necessary to change the group(More)
Recent studies have demonstrated that human neuroblastoma (NB) cell lines have at least two morphological appearance of neuroblastic (N-type) and substrate-adhesive (S-type) cells. Our previous study revealed that S-type cells expressed alpha-smooth muscle actin and/or desmin, suggesting the smooth muscle cell characteristics of S-type cells. In the present(More)
We consider live continuous broadcast (such as radio or TV) to which users can join with time-shifting. They can join the broadcast at time t and receive the broadcast of time t−w for some offset parameter w ≥ 0. The simplest implementation that supports such a feature allocates a dedicated channel for each arrival time t and offset value w. Using such a(More)