Supporting multiple traffic classes with different QoS (Quality of Service) constraints in third generation mobile systems is not a straightforward problem. This issue becomes critical at the access network interfaces, where transmission resources are usually expensive. One of the most important interfaces is the one that connects each base station with its controller, because there can be many...

This paper studies hando control mechanisms based on a Mo bile ATM concept Mobile ATM refers to an ATM infrastructure that supports user mobility functions through an enhanced set of ATM sig naling procedures within ATM backbone network The authors present a protocol design suitable for alternative hando control procedures in various situations such as ATM non ATM accessses and di erent path re...

The ataxia telangiectasia mutated (ATM)-p53 pathway is a well-known main signal transduction pathway for cellular responses, which is activated by g-ray irradiation. Microarray analysis showed changes in the expressions of IFN-stimulated genes (ISG) in g-ray–irradiated Balb/cA/Atm-deficient mouse embryonic fibroblasts (MEF) (ATM-KO), indicating that another pathway for cellular responses beside...

Asynchronous Transfer Mode (ATM) technology performance is evaluated for Class C (variable bit rate, asynchronous) data transfer, as would be typically found when migrating legacy applications to an ATM environment. Of particular interest are the end-to-end latencies obtainable using ATM networks to transfer time critical data. Latencies obtained using Classical IP over ATM and raw ATM using th...

10 µm lasing is studied in a compact CO 2 -He cell pressurized up to 15 atm when optically pumped by ∼50 mJ Fe:ZnSe laser tunable around 4.3 µm. The optimal pump wavelength and partial pressure of for generating pulses are found be ∼4.4 0.75 atm, respectively. Without cavity optimization, the optical-to-optical conversion efficiency reached ∼10% at total 7 atm. gain lifetime measured ∼1 µs pres...

Ataxia telangiectasia (A-T) mutated (ATM) kinase orchestrates deoxyribonucleic acid (DNA) damage responses by phosphorylating numerous substrates implicated in DNA repair and cell cycle checkpoint activation. A-T patients and mouse models that express no ATM protein undergo normal embryonic development but exhibit pleiotropic DNA repair defects. In this paper, we report that mice carrying homoz...