In this paper, we present a thorough research to analyze the performance of the soft switches of PTCL (Pakistan Telecommunication Company Limited) in south region by taking real values from the operational systems and ratio of fault occurrence in soft switches. The major issues and shortcomings related to hardware of soft switches, network build up and protocols of SS (Soft Switch) are discusse...

This work gives an over view of IP telephony and explain the existing difficulties in implementing VoIP services & migrate the TDM base telephony to IP telephony. When the architecture is deployed in IP based network. The causes of these problems are explained with three approaches used by carrier to solve interoperability. They are TDM base telephony to IP telephony by using soft switch and vo...

in this work, we define fuzzy soft ($fs$) matrices and theiroperations which are more functional to make theoretical studies inthe $fs$-set theory. we then define products of $fs$-matrices andstudy their properties. we finally construct a $fs$-$max$-$min$decision making method which can be successfully applied to theproblems that contain uncertainties.

In power conversion of photovoltaic (PV) energy, a hard-switching buck converter always generates some disadvantages. For example, serious electromagnetic interference (EMI), high switching losses, and stresses on an active switch (metal-oxide-semiconductor-field-effect-transistor, MOSFET), and high reverse-recovery losses of a freewheeling diode result in low conversion efficiency. To release ...

acute leukemia which is the most common cancer in children is a heterogeneous group of clonal malignancies. the conversion of the leukemic cell lineage during the course of the disease or later is termed lineage switch. it has been rarely reported in the literature. in leukemia lineage switch, conversions from lymphoblastic leukemia to myeloid leukemia or vice versa are reported. herein, we rep...

an object $x$ of a category $mathbf{c}$ with finite limits is called exponentiable if the functor $-times x:mathbf{c}rightarrow mathbf{c}$ has a right adjoint. there are many characterizations of the exponentiable  spaces in the category $mathbf{top}$ of topological spaces. here, we study the exponentiable objects in the category $mathbf{stop}$ of soft topological spaces which is a generalizati...

An ultra-high gain DC-DC converter with single-switch structure is introduced in this paper. Full soft-witching provided by simultaneous use of quasi-resonant performance one resonant tank and leakage inductance a three-winding coupled inductor (CI). Adopting the secondary tertiary windings CI separated voltage multiplier cells enables to provide gain. The reverse recovery problem resolved than...

conclusions switching ams off may increase biventricular pacing in some patients. case presentation in this case series, we present a combination of far field sensing and automatic mode switching (ams) in six patients. it is found that this combination causes ventricular sensing (vs) episodes with wide qrs and no synchronization. we turn off the ams and alleviate the problem. introduction cardi...

A unified specification to design and operate the stability control device in smart substation has not been formed yet, which greatly affected promotion application of substation. Thus, referring technical specifications protection combining specificity device, a full detailed configuration scheme is proposed meet requirement, including principle, access SV GOOSE for variable primary connection...