The external-field QCD Sum Rules method is used to evaluate the coupling constants of the light-isoscalar scalar meson (“σ” or ǫ) to the Λ, Σ, and Ξ baryons. It is shown that these coupling constants as calculated from QCD Sum Rules are consistent with SU(3)-flavor relations, which leads to a determination of the F/(F + D) ratio of the scalar octet assuming ideal mixing: we find αs ≡ F/(F + D) ...

Abstract A brief review is presented of contemporary ways estimating heat capacity and determining their main advantages disadvantages. Incremental schemes that predict the temperature dependences are considered in detail. Results (InAs) 1– x (GaAs) solid solutions using specially selected mixing rules presented.

An Opinion Survey on the Appropriateness of the Calligraphy Used in the First Grade's Farsi Textbook H. Ghamari, Ph.D. To assess the appropriateness of the calligraphy used in the first grade's Farsi textbook, the opinions of a large number of head teachers, teachers, students, and calligraphists across five provinces were surveyed. The instruments used in data collection were a q...

In this paper we investigate mixing and transport in correspondence of a meandering jet. The large-scale flow field is a kinematically assigned streamfunction. Two basic mixing mechanisms are considered, first separately and then combined together: deterministic chaotic advection, induced by a time dependence of the flow, and turbulent diffusion, described by means of a stochastic model for par...

A new set of averaging rules is put forward that exactly determines the means of air temperature, mixing ratio, and velocity by incorporating weighting factors in accordance with physical conservation laws. For the temperature and velocity, respectively, the means calculated according to these rules are shown to be in accordance with the gas law and the most fundamental definition from classica...

We explore the achievable delay performance in wireless random-access networks. While relatively simple and inherently distributed in nature, suitably designed queue-based randomaccess schemes provide the striking capability to match the optimal throughput performance of centralized scheduling mechanisms in a wide range of scenarios. The specific type of activation rules for which throughput op...

The flavor SU(3) group structure of pentaquark baryons which form 1, 8, 10, 10, 27, and 35 multiplets is investigated in quark model. The flavor wave functions of all the pentaquark baryons are constructed in SU(3) quark model and their Yukawa interactions with meson octet are obtained in general and in the special case of the octet-antidecuplet ideal mixing with the OZI rule. The mass sum rule...