Abs t rac t4 systematic and automatic method for dynamically optimizing medium access control (MAC) protocol parameters is presented. Our meta-protocol approach is capable of performing on-line optimization of critical MAC parameters without knowing in advance what network conditions wil l arise or how they may fluctuate over time. Furthermore, this dynamic optimization is achieved without any ...

Mobile IPv6 is the mobility protocol of the IPv6 protocol. The mobility feature in IPv6 is supposed to be default, but still there are obstacles carrying out deployment. Great needs for this new Internet Protocol are security, scalability, efficiency and the lack of IPv4 addresses. Deployment of this long needed new protocol has been delayed partly due to the route optimization problem of mobil...

Many existing network protocols need to be adaptively configured for the prevailing network conditions. This paper presents a scalable and flexible network protocol configuration tool, the on-line simulation scheme. The optimal configuration of network protocols can be formulated as a black-box optimization problem where the network is considered as a black-box and its performance can be evalua...

Ad-Hoc wireless networks are self-organizing multi-hop wireless networks. Mobile ad hoc networks have some challenges like the design of an efficient routing protocol. The multipath routing protocol with load balancing provides a solution for the congestion network. Ad Hoc networks are setup as needed since they do not depend on the infrastructure. Ad Hoc networks are self–organizing multi hop ...

A popular trend in modern computing is the migration from desktop computing to a more distributed environment where individual devices communicate with each other over a network. Such devices, especially those in the wireless domain, are typically limited in resources, most importantly size and power. It is therefore important to be able to implement network protocols efficiently, resulting in ...

Random amplification of polymorphic DNA (RAPD) analysis using the polymerase chain reaction proved a useful technique in the biodiversity analysis of microorganisms but may lack reproducibility in the poorly standardized methodology. In the present investigation, the RAPD technique was optimized for characterizing cyanobacterial isolates in order to ensure its reproducibility and discriminatory...

This paper investigates the tradeoff between reliability and effectiveness for the IPv4 Zeroconf protocol, proposed by Cheshire/Adoba/Guttman in 2002, dedicated to the selfconfiguration of IP network interfaces. We develop a simple stochastic cost model of the protocol, where reliability is measured in terms of the probability to avoid an address collision after configuration, while effectivene...

Introduction: Gd-EOB-DTPA (Primovist) is a paramagnetic extracellular and hepatocyte-targeted contrast agent, which enables both dynamic imaging and hepatocyte imaging. Although it has been documented that optimal timing of hepatocyte imaging is 20-45 minutes after administration [1], prolongation of examination time disturbs patients’ throughput. We analyzed various timings of image acquisitio...

Multiple biofilm-specific mechanisms, poor antibiotic penetration, nutrient limitation, slow growth, adaptive stress responses, and formation of persister cells contribute to the high levels of antibiotic resistance. Therefore, P. aeruginosa biofilm-associated infections, such as those common in cystic fibrosis and burn patients, present huge clinical challenges which have spurred interest in t...

We propose a method for deriving parallel, scheduling optimized protocol implementations from sequential protocol speciications. We start with an SDL spec-iication, identify a common path for optimization and perform a data dependency analysis. The resulting common path graph is parallelized as far as permitted by the data dependency graph. The degree of paral-lelism is extended even further by...