Yi Yang Department of Electrophysics, National Chiao Tung University, Hsinchu, Taiwan. (Dated: June 5, 2005) Abstract We use semiclassical methods to study closed strings in the modified AdS5×S background with constant B fields. The point-like closed strings and the stretched closed strings rotating around the big circle of S5 are considered. Quantization of these closed string leads to a time-...

Tracking control of constrained nonlinear systems is a challenging problem which has recently attracted considerable attention. In particular, a successful approach is based on the so called Reference Governor (RG) [1]-[4]. The RG is essentially a nonlinear device which manipulates on-line a command input to the suitably pre-compensated closed-loop system so as to impose constraint satisfaction...

In the present paper, we introduce soft generalized closed sets in soft topological spaces which are defined over an initial universe with a fixed set of parameters. A sufficient condition for a soft g-closed set to be a soft closed is also presented. Moreover, the union and intersection of two soft g-closed sets are discussed. Finally, the new soft separation axiom, namely soft 1 2 T space is ...

We perform the first reflection study of the soft X-ray transient and Type 1 burst source XTE J1709-267 using NuSTAR observations during its 2016 June outburst. There was an increase in flux near the end of the observations, which corresponds to an increase from ∼0.04 LEdd to ∼0.06 LEdd assuming a distance of 8.5 kpc. We have separately examined spectra from the low and high flux intervals, whi...

The concept of soft ideal was first introduced by Kandil et al. [13]. In 1999, Molodtsov [22] introduced the concept of soft sets as a general mathematical tool for dealing with uncertain objects. The concept of generalized closed soft sets in soft topological spaces was introduced by Kannan [15] in 2012. The notions of supra soft topological space were first introduced by Kandil et al. [14]. I...

The soft expert models are richer than soft set models since the soft set models are created with the help of one expert whereas but the soft expert models are made with the opinions of all experts. In the present paper, we introduce soft expert generalized closed sets (soft expert g-closed sets) and soft expert generalized open sets (soft expert g-open sets) in soft expert topological spaces a...