Mark D. Gross, Department of Planning and Design, University of Colorado People draw diagrams and sketches to think, argue, and communicate about problems in domains ranging from mechanical engineering to music. To understand a problem better, mathematician George Polya advised, “Draw a figure ... even if your problem is not a problem of geometry.”1 We can debate whether making a figure really ...

Abstract. The article describes results of experimental study of a plasma jet with the use of electric probes. The volt-ampere probe characteristics were determined from measurements with slowly varying biasing potential in the probe circuit. Plasma floating potential and plasma resistance in different positions in the vicinity of plasma jet were determined for various pressures of ambient atmo...

Spontaneous acceleration of ions to suprathermal energies is observed during magnetic reconnection in the Mega-Ampere Spherical Tokamak (MAST). A high-energy tail is observed in the ion-distribution function following each internal reconnection event in Ohmic discharges. This phenomenon is explained in terms of runaway ion acceleration in the electric field induced by the reconnection.

In this paper, by the method of moving planes, we prove the symmetry result which says that classical solutions of Monge-Ampere system in the whole plane are symmetric about some point. Our system under consideration comes from the differential geometry problem. Keyword: Moving plane, positive solutions, radial symmetric, MongeAmpere system Mathematics Subject Classification: 35J60, 53C21, 58J05

<p>Elektroplating merupakan proses pengendapan ion-ion pada suatu logam dasar katoda terjadi karena perpindahan bermuatan listrik dari anoda dengan perantara larutan elektrolit, terus menerus tegangan konstan sehingga dan menempel logam. Mesin yang digunakan penelitian ini mesin telah dibuat sebelumnya, kapasitas tangki 50 liter elektrolit dihasilkan sebesar 24 <em>volt</em> a...

Using the subgroup structure of the generalized Poincaré group P (1, 4), the symmetry reduction of the five-dimensional wave and Dirac equations and Euler–Lagrange– Born–Infeld, multidimensional Monge–Ampere, eikonal equations to differential equations with a smaller number of independent variables is done. Some classes of exact solutions of the investigated equations are constructed.

This paper presents the design of CMOS operational transconductance amplifiers (OTAs) with very small transconductance (of order of nano ampere per volt), which uses in very low frequency continuous time filters. This design uses current division technique to reduce the transconductance of OTA. This design is simulated in SPICE tool using 0.25μm technology model file.

This paper analyzed the working principle of the tester for yield stress of magnetorheological fluid based on the pulling test , combined with the Ohm's law of magnetic circuit and Ampere circuital theorem, calculated the magnetic circuit of the tester,using finite element software to simulate and analyze the magnetic circuit.

Public understanding of thewater system is vital in confronting contemporarywater challenges, as public support is necessary for implementing measures to address shortages and repair infrastructure. In this study, university student participants (N = 457) were asked to draw diagrams illustrating how water reaches the tap in an average home in the U.S. and is then returned to the natural environ...