In this paper, the behavior of a second-order dynamical system around its equilibrium point will be analyzed based on the behavior of some appropriate equipotential curves which will be considered around the same equilibrium point. In fact two sets of equipotential curves are considered so that a set of the equipotential curves has a role as the upper band of the system trajectory and another s...

This review summarises the research work carried out in the field of carbon nanotube (CNT) metal matrix composites (MMCs). Much research has been undertaken in utilising CNTs as reinforcement for composite material. However, CNT-reinforced MMCs have received the least attention. These composites are being projected for use in structural applications for their high specific strength as well as f...

The present paper investigates the robustness of the consensus protocol over weighted directed graphs using the Nyquist criterion. The limit to which a single weight can vary, while consensus among the agents can be achieved, is explicitly derived. It is shown that even with a negative weight on one of the edges, consensus may be achieved. The result obtained in this paper is applied to a direc...

This paper deals with the problem of planning and controlling a radially symmetric sixlegged walker on an uneven terrain when a smooth time-varying body motion is required. The main difficulties lie on the planning of gaits and foot trajectories. As for the gaits, this paper discusses the forward wave gait of a variable duty factor and a variable wave direction. With the commanded body motion, ...

We study chiral symmetry breaking in quenched strong-coupling QED4 in arbitrary covariant gauge within the Dyson-Schwinger equation formalism. A recently developed numerical renormalization program is fully implemented. Results are compared for three different fermion-photon proper vertex Ansätze : bare γ, minimal Ball-Chiu, and Curtis-Pennington. The procedure is straightforward to implement a...

1 MODIFICATION OF HISTONES BY THE SUGAR β-N-ACETYLGLUCOSAMINE (GlcNAc) OCCURS ON MULTIPLE RESIDUES, INCLUDING H3 SERINE 10, AND IS CELL CYCLE REGULATED Suisheng Zhang, Kevin Roche, Heinz-Peter Nasheuer, and Noel Francis Lowndes* Genome Stability Laboratory & Cell Cycle Control Laboratory, Center for Chromosome Biology, National University of Ireland Galway, University Road, Galway, Ireland Runn...

in this paper, the effects of input temperature and compression ratio on the net output work and efficiency of the air standard cycles, i.e. atkinson cycle, diesel cycle and otto cycle are analyzed. we assumed that the compression and power processes are adiabatic and reversible and any convective, conductive and radiative heat transfer to cylinder wall during the heat rejection process may be ...

An overview is given of a series of classification systems used for rock slope stability analyses. Calculation methods and parameters used seem not always appropriate for slopes stability and could be improved. Based on this evaluation some new ideas developed of how a system for slope stability assessment could be designed without inherited legacies as parameters related to underground excavat...

In this work, we investigate the dynamical behavior of a fractional-order toxin producing on a phytoplankton–zooplankton (TPPZ) system with nutrient cycling. We propose a mathematical system to model this situation. All the feasible equilibria of the system are obtained and the conditions for the existence of the equilibriums are determined. Local stability analysis of the TPPZ is studied by us...

This work aims to investigate the stability of aerobic granular sludge in the long term, focusing on the clogging of the granular sludge porosity exerted by the extracellular polymeric substances (EPSs). The effects of different cycle lengths (short and long-term cycle) on the granular sludge stability were investigated. Results obtained outlined that during the short duration cycle, the format...