The availability of SiGe HBT devices has opened a door for Gigahertz FPGAs. However, the large device power consumption limits its scale. In order to solve this problem, a Multiple-Speed Current Mode Logic design has been developed to provide variable power (and speed) settings. The performance of the Multiple-Speed Current Mode Logic architecture at the optimum setting exhibits similar perform...

We investigated the properties of alternating current (AC)-driven electroluminescence from (Ba0.4Ca0.6)TiO₃:Pr3+ diphase polycrystal-based device. The results of crystal phases and micrographs, and the symmetrical dual emissions in one AC cycle, indicate the spontaneous formation of a dielectric/phosphor/dielectric sandwich microstructure in (Ba0.4Ca0.6)TiO₃:Pr3+. The electroluminescent device ...

The parasitoid, Cotesia flavipes (Cameron) (Hymenoptera: Braconidae), was introduced for biological control of the stemborer, Chilo partellus (Swinhoe) (Lepidoptera: Crambidae), in eastern and southern African countries. The parasitoid became firmly established in Ethiopia, with varying density and distribution in various regions of the country indicating that there are factors regulating the s...

Singapore English, a recently nativised (Gupta 1994) variety of English, has often been analysed in terms of a continuum (Pakir 1991; Platt 1975; Poedjosoedarmo 1995). A more recent approach (Gupta 1994, 2001) regards this variation as one reflecting a diglossic situation: Standard (Singapore) English is H(igh), Colloquial Singapore English (‘Singlish’) is L(ow). This paper presents findings fr...

"Janus" particles with two hemispheres of different polarizability or charge demonstrate a multitude of interesting effects in external electric fields. We reported earlier how particles with one metallic hemisphere and one dielectric hemisphere self-propel in low-frequency alternating current (AC) electric fields. Here, we demonstrate the assembly of such Janus particles driven by AC electric ...

The current-source density (CSD) analysis is a widely used method in brain electrophysiology, but this method rests on a series of assumptions, namely that the surrounding extracellular medium is resistive and uniform, and in some versions of the theory, that the current sources are exclusively made by dipoles. Because of these assumptions, this standard model does not correctly describe the co...

Using dynamical mean-field theory and the non-crossing approximation as impurity solver, we study the response of a Mott insulator to strong dc electric fields. The breakdown of the Mott insulating state is triggered by field-induced creation of doublon-hole pairs. In a previous investigation, Ref. [1], it was found that the system approaches a long-lived quasisteady state in which the current ...

The measurement of the impedance of biological tissue can be a non-invasive method to find new data of diagnostic relevance. A system for a noncontact measurement of the electrical impedance of biological tissue is presented. The system consists of an excitation coil and two sensing coils coupled together as a gradiometer. The excitation coil is driven by an alternating current. Due to this alt...

Contact current, defined as indirect effects of electromagnetic fields, flows a human body when contacting with an object such as a metal structure at a different electric potential, and may stimulate muscle and peripheral nerve. Thus, numerical analyses of electric fields induced by contact currents in a human body have been performed. Computational methods and evaluations of effects of transi...