Aimin Sang

In this paper, we propose a simple adaptive SVC caching scheme to offload the high processing capacity burden on ATM switches. After a SVC is established in a usual way for a call, it is not torn down after the conversation is over. Instead, it is kept alive for variable duration (i.e., delayed re- lease) with the expectation that there

Currently there is not enough work on the Internet weighted fair bandwidth sharing without per-flow management, especially when both UDP and TCP flows of different RTTs and different bandwidth targets co- exist. This paper contains two contributions: 1 ) A mechanism called SCALE-WFS, Scalable Core with Aggregation Level labEling - Weighted Fair bandwidth-Sharing, is presented to achieve near-optimal Max-Min weighted

This paper presents a new mechanism of weighted fair bandwidth sharing for differentiated services (DiffServ) assured forwarding (AF) services. The mechanism is named SCALE-WFS, i.e. Scalable Core with Aggregation Level labEling-Weighted Fair bandwidth-Sharing. It aims to achieve near-optimal max-min weighted fairness without per-flow management at core routers. Through extensive simulation and simple analysis, we show its advantages over the current

Abstract In voice trunking over ATM (VTOA) technology, the tandem is replaced by three components: trunk inter-working function (T-IWF), control and signaling inter-working function (CS-IWF), and ATM network. This new architecture calls for re-examination of the ...

SYF2 (SYF2 homologue, RNA splicing factor), also known as CCNDBP1-interactor or p29, belongs to the SYF2 family, which are involved in pre-mRNA splicing and cell cycle progression. Accumulating evidences demonstrate that SYF2 exerted multiple effects including pro-apoptosis, cell differentiation, and glial activation in the pathogenesis of various experimental central nervous system (CNS) diseases. However, SYF2 expression and functions in the retina are still with limited acquaintance. To investigate whether SYF2 was involved in retinal degeneration, we performed a light-induced retinal damage model in adult rats. The SYF2 protein expression was dramatically upregulated after retinal damage. Besides that, SYF2 localized in the retinal ganglion cell (RGC) layer (GCL), inner unclear layer (INL), and outer nuclear layer (ONL) after light exposure. In addition, the expression of cyclin D1, CDK4, and active caspase-3 was parallel with SYF2. We also found the co-localization of SYF2 with...

Transcription initiation factor IIB (TFIIB) is a general transcription initiation factor that plays a pivotal role in the response to transcriptional activator proteins. Previous reports have shown that TFIIB have been implicated in the pathogenesis of various experimental central nervous system diseases. However, its distribution and function in the retina remain unclear. In the present study, we investigated the spatiotemporal expression of TFIIB in a light-induced retinal damage model. Western blotting analysis showed TFIIB level significantly improved 3 days after injury, and then declined during the following days. The association of TFIIB and retinal ganglion cells (RGCs) was detected by immunofluorescence double staining. The injury-induced expression of TFIIB was physically co-existed with active caspase-3 and TUNEL (apoptotic markers). Spatiotemporal changes of TFIIB expression suggest that this protein may play a role in the degenerative process of RGCs by light-induced da...

RNA-binding motif protein, X-linked (RBMX) is a 43 kDa nuclear protein in the RBM family and functions on alternative splicing of RNA. The gene encoding RBMX is located on chromosome Xq26. To investigate whether RBMX is involved in retinal neuron apoptosis, we performed a light-induced retinal damage model in adult rats. Western blotting analysis showed RBMX gradually increased, reached a peak at 12 h and then declined during the following days. The association of RBMX in retinal ganglion cells (RGCs) with light exposure was found by immunofluorescence staining. The injury-induced expression of RBMX was detected in active caspase-3 and TUNEL positive cells. We also examined the expression profiles of active caspase-3, bcl-2 and Bax, whose changes were correlated with the expression profiles of RBMX. To summarize, we uncovered the dynamic changes of RBMX in the light-induced retinal damage model for the first time. RBMX might play a significant role in the degenerative process of RGCs after light-induced damage in the retina.

Currently there is not enough work on the Internet weighted fair bandwidth sharing without per-flow management, especially when both UDP and TCP flows of different RTTs and d ifferent bandwidth targets coexist. This paper contains two contributions: 1) A mechanism called SCALE-WFS, Scalable Core with Aggregation Level l abEling - Weighted Fair bandwidth-Sharing, is presented to achieve near-optimal Max-Min weighted

Vijayakumar Bhagavatula, Carnegie Mellon University, USA Stefano Bregni, Transmission, Access and Optical Systems TC Stefano Buzzi, Università degli Studi di Cassino, Italy Gary Chan, Multimedia Communications TC Mung Chiang, Princeton University, USA Nim K. Cheung, Telcordia, USA Gerard Damm, Alcatel, Canada Anand Debak, Texas Instruments, USA Itamar Elhanany, University of Tennessee at Knoxville, USA Elza Erkip, Polytechnic University, USA Joseph B. Evans, High Speed Networking TC Nelson Fonseca, State University of Campinas, Brazil Fabrizio ...