This article presents a new current-mode multiplier/divider based on MO-CDTA (Multiple output current conveyor transconductance amplifier). The circuit description is very simple, its construction consists of only one MO-CDTA. Without external passive elements, the proposed circuit is then suitable for IC architecture. The PSpice simulation and experimental results are depicted, and agree well ...

We give an elementary way to distinguish between the twists of an ordinary elliptic curve E over Fp in order to identify the one with p+1−2U points, when p = U2 + dV 2 with 2U, 2V ∈ Z and E is constructed using the CM method for finding elliptic curves with a prescribed number of points. Our algorithms consist in most cases of reading off simple congruence conditions on U and V modulo 4.

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This paper reports on the design of a novel ultra low actuation voltage, low loss radio frequency micro-electro-mechanical system (RF MEMS) capacitive shunt switch. The concept of the switch relies on a mechanically unconstrained armature actuated over a coplanar waveguide using electrostatic forces. The minimum actuation voltage of the switch is <2V, with an isolation of 40dB and insertion los...

We initiate the study of extended bicolorings of Steiner triple systems (STS) which start with a k-bicoloring of an STS(v) and end up with a k-bicoloring of an STS(2v + 1) obtained by a doubling construction, using only the original colors used in coloring the subsystem STS(v). By producing many such extended bicolorings, we obtain several infinite classes of orders for which there exist STSs w...

This article concerns the multiplicity of solutions for the system of equations −∆u+ V ( x)u = α|u|α−2u|v|β , −∆v + V ( x)v = β|u|α|v|β−2v in RN , where V is a positive potential. We relate the number of solutions with the topology of the set where V attains its minimum. The results are proved by using minimax theorems and Ljusternik-Schnirelmann theory.

By means of the Schechter’s Linking method, we study the existence of 2T -periodic solutions of the non-autonomous fourth-order ordinary differential equation u′′′′ −Au′′ −Bu− Vu(t, u) = 0 where A > 0, B > 0, V (t, u) ∈ C1(R × R,R) is 2T -periodic in t and satisfies either 0 < θV (t, u) ≤ uVu(t, u) with θ > 2, or uVu(t, u) − 2V (t, u) ≥ d3|u| with r ≥ 1.

The title compound, K5[H2PtV9O28]·9H2O, containing the nona-vanado-platinate(IV) polyanion, was obtained by hydro-thermal reaction at pH = 4.2. The polyanion has approximate mm2 (C 2v ) symmetry. The two platinum-bound μ2-O atoms are protonated in the polyanion. The heteropolyanions form inversion-generated dimers, {[H2PtV9O28]2}(10-), held together by μ2-O-H⋯μ2-O and μ2-O-H⋯μ3-O hydrogen bonds...

Photovoltaic (PV) cell has a characteristic of decrease in power beyond certain temperature. This is due to drop the open circuit voltage. decreases efficiency PV cell. The objective this research increase cells by reducing temperature and reflection loss. loss can be reduced spraying water over cells. On USP36, 24V module, found increased. test result shows 1V 2V voltage, with an increment 1% ...