A new layered multicast scheme known as loss differentiated multicast congestion control architecture is proposed to provide effective congestion control in heterogeneous multicast networks. It is comprised of two components, the random early detection assisted layered multicast (RALM) and the layer marking discovery protocol (LMDP). The RALM protocol utilises the packet marking and priority dr...

Random Early Detection (RED) [1] is a widely deployed active queue management scheme in packetswitched networks. Although RED can improve packet loss rates, its performance depends severely on the tuning of its operating parameters. To alleviate the problem of parameter dependence, we propose an algorithm to adaptively vary the queue weight wq in conjunction with the maximum packet dropping pro...

how to cite this article: karimzadeh p, jafari n, jabbehdari s, taghdiri mm, nemati h, saket s, alaee mr, ghofrani m, tonakebni sh. methylmalonic acidemia: diagnosis and neuroimaging findings of this neurometabolic disorder (an iranian pediatric case series). iran j child neurol. 2013 summer; 7(3): 63-66.   objective methylmalonic acidemia is one of the inborn errors of metabolism resulting in ...

background :breast cancer is the most common cancer among females that will cause death ifit does not be recognized and cured. one out of eight iranian women in 40-55years old is likely to develop breast cancer. early detection of breast cancerby screening programs is a useful approach in controlling the disease. methods :in this descriptive study, 196 female healthcare providers were selected ...

in this paper, a new method is presented for the detection of defects in random textures. in the training stage, the feature vectors of the normal textures’ images are extracted by using the optimal response of gabor wavelet filters, and their probability density is estimated by means of the gaussian mixture model (gmm). in the testing stage, similar to the previous stage,at  first, the feature...

This paper identifies the lone linear drop function for computing dropping probability between certain queue threshold values as a major weakness random early detection (RED) algorithm it leads to large delay and instability. To address this concern, we propose an enhanced RED-based called detection-quadratic (referred “RED-QL”) active management (AQM) which leveraged benefit of quadratic packe...