The study of charmed meson decays are important for improving our knowledge of the Standard Model (SM). In particular, the study of leptonic and semileptonic decays allow us to measure the CKM matrix elements Vcs and Vcd to a high level of precision. Leptonic and semileptonic decays are also used to test theoretical predictions describing the strong interaction (QCD) in heavy quark systems. Cha...

Models for the production, storing and distribution elements of supply chains are proposed based on linear differential equations. The models consider the dynamics of inventories and production rates. A bounded control for the inventories of the mentioned elements is introduced for regulating the inventory level to a desired value manipulating production or incoming rates. Stability conditions ...

The definition of addiction is explored. Elements of addiction derived from a literature search that uncovered 52 studies include: (a) engagement in the behavior to achieve appetitive effects, (b) preoccupation with the behavior, (c) temporary satiation, (d) loss of control, and (e) suffering negative consequences. Differences from compulsions are suggested. While there is some debate on what i...

A distinct retention of calcium, magnesium, and phosphorus was noted, which was not accompanied by corresponding changes in general metabolism, as evidenced by a practical balance of nitrogen and sulphur. It is concluded that there is a primary disturbance in the metabolism of the mineral elements mentioned, with the probable formation of new bony tissue. The distribution of elements between ur...

In this article, in order to demonstrate the pragmatic elements of Rawls’s viewpoint, the developmental path of his A Theory of Justice shall first be investigated. This development has two phases: In the first phase, justice has an ethical-philosophical basis. In A Theory of Justice, this phase is specifically shown under the title of theory of justice. In the second phase, justice has no phil...