Taylor expansions in chemical potential

Properties of QCD at finite chemical potential are extracted using Taylor series expansions. The continuum limits of lattice results are presented. The result of expanding the free energy density, ie, the pressure, to 6th order in the expansion is shown. The Taylor coefficients of the chiral condensate are also shown. Relations between various Taylor coefficients are demonstrated. All this information is utilised to remove various lattice artifacts from the determination of the Wroblewski parameter in strangeness production.Comment: for proceedings of "Finite Density QCD at Nara

A Novel Solution to the Dynamic Routing and Wavelength Assignment Problem in Transparent Optical Networks

We present an evolutionary programming algorithm for solving the dynamic routing and wavelength assignment (DRWA) problem in optical wavelength-division multiplexing (WDM) networks under wavelength continuity constraint. We assume an ideal physical channel and therefore neglect the blocking of connection requests due to the physical impairments. The problem formulation includes suitable constraints that enable the algorithm to balance the load among the individuals and thus results in a lower blocking probability and lower mean execution time than the existing bio-inspired algorithms available in the literature for the DRWA problems. Three types of wavelength assignment techniques, such as First fit, Random, and Round Robin wavelength assignment techniques have been investigated here. The ability to guarantee both low blocking probability without any wavelength converters and small delay makes the improved algorithm very attractive for current optical switching networks.Comment: 12 Pages, IJCNC Journal 201

Thinking Comparative Engineering Education: India and the Rest

Engineering education in the globalized perspective undergoing metamorphic changes in changing paradigms. In the context, as a developing nation, India has an opportunity to share the experience of the advanced nations and thereby, through juxtaposition, can adopt appropriate policies for strengthening the existing system of engineering education, best suits for national situations. Perception about the profession and problem context of engineering education needs ramification. Shortcomings in engineering practice need to be identified in the areas of innovation, research and development, design and technical improvisation. System related and profession oriented issues need to be addressed through the global experiences. Contrasting values of employer organizations and profession for an engineer need a clear synthesis for the development in different perception-context. The paper present a snap views on the stated issues which believed to be contributing factors for strengthening the Indian engineering education

How teaching experience influence professional stress and allied psychopedagogical status of the female engineering-educators? (a study on techno-pedagogic fabric in India, with special reference to distance education)

Present study attempts to explore the level and interrelationship of these psychopedagogical attributes as apparent among the female teachers of engineering colleges and universities, teaching through ODCL, from selected states of eastern-India. Attempt was also made to explore the impact of span of experience in teaching of the female teachers over these psychoeducational-attributes. Sample for the study includes 132 female engineering college teachers, drawn following stratified-random-sampling-technique. The study explores the level of female engineering college teachers with reference to the specified attributes, their interrelationship and impact of age over those attributes

Quality of Experience (QoE) Assurance by a Multi-path Balanced Traffic-Splitting Algorithm in MPLS Networks

Multi-Protocol Label Switching (MPLS) technology has proven its worth for delivering new services while at the same time allowing migration from old to new generation networks. Avoidance of congestion is one of the major performance objectives of traffic engineering in MPLS networks. Load balancing can prevent the congestion caused due to inefficient allocation of network resources. Another important aspect in network performance is the end user perception of the quality delivered by the network called the Quality of Experience (QoE). The final arbiter of service performance is the end user whose opinion about quality is based on his or her perception. This end user perception of audiovisual quality is quantified by Mean opinion score (MOS). The network parameters that affect the MOS are delay, Jitter and loss.Though a number of multipath load balancing algorithms have been proposed in [1] and [2], none have proportioned traffic keeping the QoE constraint in mind. Here, a multipath load balancing algorithm is used to optimally split the incoming traffic based on the effect of average delay and jitter offered by the network so that the QoE measure of MOS is maximized. These initial results indicate that desirable QoE can be achieved by finite and small number of executions of an appropriate iterative load balancing algorithm once the step-size and the weights of the composite cost function representing combined effect of average delay and jitter are judiciously chosen

Delayed Dynamical Systems: Networks, Chimeras and Reservoir Computing

We present a systematic approach to reveal the correspondence between time delay dynamics and networks of coupled oscillators. After early demonstrations of the usefulness of spatio-temporal representations of time-delay system dynamics, extensive research on optoelectronic feedback loops has revealed their immense potential for realizing complex system dynamics such as chimeras in rings of coupled oscillators and applications to reservoir computing. Delayed dynamical systems have been enriched in recent years through the application of digital signal processing techniques. Very recently, we have showed that one can significantly extend the capabilities and implement networks with arbitrary topologies through the use of field programmable gate arrays (FPGAs). This architecture allows the design of appropriate filters and multiple time delays which greatly extend the possibilities for exploring synchronization patterns in arbitrary topological networks. This has enabled us to explore complex dynamics on networks with nodes that can be perfectly identical, introduce parameter heterogeneities and multiple time delays, as well as change network topologies to control the formation and evolution of patterns of synchrony