نتایج جستجو برای: pon

تعداد نتایج: 1631  

2002
Kyeong Soo Kim

Passive Optical Network (PON)-based Fiber-To-The-Home (FTTH) is a promising solution that can break through the economic barrier of traditional point-to-point solutions. Once fibers are deployed with PON-based FTTH solutions, it becomes critical how to migrate to Wavelength Division Multiplexing (WDM)-PON because Time Division Multiplexing (TDM) used in current PON solutions cannot exploit the ...

2013
Xiuchao Wu Kenneth N. Brown Cormac J. Sreenan Jerome Arokkiam Pedro Alvarez Marco Ruffini Nicola Marchetti David Payne Linda Doyle

10-Gigabit-capable Passive Optical Network (XG-PON), one of the latest standards of optical access networks, is regarded as one of the key technologies for future Internet access networks. This report presents our XG-PON module for the NS-3 network simulator. This module is designed and implemented with aim to provide a standards-compliant, configurable, and extensible module that can simulate ...

Journal: :Journal of immunology 2013
Junji Yamashita Chiaki Iwamura Toshihiro Ito Masakuni Narita Yukio Hara Tetsuya Sasaki Daisuke Masuda Munehisa Takahashi Manami Tsuchiya Kaori Hada Makoto Ishikawa Takato Matsuo Yoichi Ohno Hitoshi Tanaka Hideya Maruyama Yasumasa Ogawa Toshinori Nakayama

Crohn's disease (CD) is a chronic inflammatory disorder of the gastrointestinal tract, where excessive Th1 cell responses are observed. We performed experiments to identify immunologically bioactive proteins in human plasma and found that paraoxonase (PON)-1, which has esterase activity and is associated with high-density lipoproteins, inhibited the IFN-γ production by both murine and human dif...

Journal: :The Journal of clinical endocrinology and metabolism 2004
G Ferretti T Bacchetti D Busni R A Rabini G Curatola

High-density lipoproteins (HDL) plays a key role in the protection against oxidative damage of lipoprotein and biological membranes. The aim of the present study was to investigate the relationship between the antioxidant role of HDL and the HDL-paraoxonase (PON) activity in healthy subjects and in type 1 diabetic patients. Moreover, the ability of HDL of controls and diabetic patients to prote...

Journal: :IEICE Transactions 2008
Hiromi Ueda

Existing broadband access systems include ADSL over metallic wires, optical media converters, B-PON, GE-PON, and G-PON systems. Recent innovations such as the higher speed systems of 10G-PON, 10GEPON, and WDM-PON are receiving a lot of attention, and low cost and mass production technologies for high speed wide bandwidth systems should be developed. New optical access network architecture also ...

Journal: :JNW 2011
Md. Shamim Ahsan Man Seop Lee S. H. Shah Newaz Syed Md. Asif

Due to the rapid growth of Internet and multimedia services, broadband fiber access technologies, such as Passive Optical Networks (PONs), come to the forefront of the research field. Network service providers mostly deploy Time Division Multiplexed (TDM)-PON everywhere in the world. In order to mitigate the future demand, researchers have investigated some nextgeneration PON systems, such as W...

2008
Hiromi UEDA Toshinori TSUBOI Hiroyuki KASAI

The Passive Optical Network (PON) shares transmission facilities to provide broadband services economically. To enhance network survivability, ITU-T Rec. G.983.5 defines some protection switching methods. These methods, however, always bring about signal loss when switching is performed. Moreover, a network operator often has to replace one optical fiber cable with another that takes a differen...

Journal: :Kardiologia polska 2014
Tahir Durmaz Telat Keles Huseyin Ayhan Nurdan Cay Nihal A Bayram Emine Bilen Murat Akcay Kemal E Erdogan Ozcan Erel Engin Bozkurt

BACKGROUND Previous studies have shown an association between paraoxonase (PON) activity and the presence and severity of coronary atherosclerosis. AIM To demonstrate any association between serum PON activity and the presence and severity of coronary artery calcification (CAC). METHODS A total of 156 consecutive patients having the suspicion of coronary atherosclerosis or needing risk stra...

2013
Harald Störrle Andrew Fish

We attempt to validate the conceptual framework “Physics of Notation” (PoN) as a means for analysing visual languages by applying it to UML Use Case Diagrams. We discover that the PoN, in its current form, is neither precise nor comprehensive enough to be applied in an objective way to analyse practical visual software engineering notations. We propose an operationalization of a part of the PoN...

2015
Abhishek Niroula Siddhaling Urolagin Mauno Vihinen

More reliable and faster prediction methods are needed to interpret enormous amounts of data generated by sequencing and genome projects. We have developed a new computational tool, PON-P2, for classification of amino acid substitutions in human proteins. The method is a machine learning-based classifier and groups the variants into pathogenic, neutral and unknown classes, on the basis of rando...

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