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MEMS-based meta-emitter with actively tunable radiation power characteristic [PDF]
Discover NanoWe propose a meta-emitter based on micro-electro-mechanical system (MEMS) technology. The main structure of the meta-emitter unit cell is composed of four symmetrically split crosses of Au and SiO2 bilayer cantilevers.
Kunye Li, Yuhao Liang, Yu-Sheng Lin
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Adaptive Fuzzy Control for Power-Frequency Characteristic Regulation in High-RES Power Systems
Energies, 2017 Future power systems control will require large-scale activation of reserves at distribution level. Despite their high potential, distributed energy resources (DER) used for frequency control pose challenges due to unpredictability, grid bottlenecks, etc.
Evangelos Rikos +4 more
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THE MONOGENICITY OF POWER-COMPOSITIONAL CHARACTERISTIC POLYNOMIALS
Albanian Journal of MathematicsLet $f(x)\in {\mathbb Z}[x]$ be monic of degree $N\ge 2$. Suppose that $f(x)$ is monogenic, and that $f(x)$ is the characteristic polynomial of the $N$th order linear recurrence sequence $Υ_f:=(U_n)_{n\ge 0}$ with initial conditions \[U_0=U_1=\cdots =U_{N-2}=0 \quad \mbox{and} \quad U_{N-1}=1.\] Let $p$ be a prime such that $f(x)$ is irreducible over ${
Lenny Jones
exaly +3 more sources
Magnitude-phase equivalent circuit and steady-state power-angle characteristic analysis of DFIG
International Journal of Electrical Power & Energy SystemsCircuit model representing generator characteristics is essential in stability analysis and control system design of doubly-fed induction generator (DFIG).
Ruibo Li +4 more
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Design procedure for a wind-wheel with self-adjusting blade mechanism
Trudy Odesskogo Politehničeskogo Universiteta, 2014 Developed is a wind-wheel design equipped with the self-adjusting blade. The blade is positioned eccentrically to the balance wheel and can freely rotate around its axis. Elaborated is the method of calculating the energy characteristics for a wind-wheel
Gennady A. Oborsky +2 more
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Characteristic example of insulation coordination in power converters [PDF]
Zbornik Radova: Elektrotehnički Institut "Nikola Tesla", 2021 Power electronics devices and modules that are most often used in power supply systems when compared to the passive components usually exhibit a very poor ability to withstand surge voltages.
Despotović Željko V.
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Metaphoric Power as a Culturally Determined Characteristic of Discourse [PDF]
Актуальные проблемы филологии и педагогической лингвистики, 2021 In the process of intercultural communication, it is important not only to identify the features of the communicative behavior of representatives of a certain ethnic group, but also to comprehend their nature.
Tatiana L. Guruleva, Oleg I. Kalinin
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Blades Interaction and Non-Stationarity of Flow in Vertical-Axial Wind Turbines
Management Systems in Production Engineering, 2021 Until recently, horizontal-axial wind turbines with blades having a wing profile occupied a predominant position in the world wind energy market. But currently, vertical-axial wind units are of increasing interest and this is understandable from the ...
Rozhkova Ludmila +3 more
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On the characteristic polynomial of the power of a path [PDF]
Proyecciones (Antofagasta), 2017 We determine a closed-form expression for the fifth characteristic coefficient of the power of a path. To arrive at this result, we establish the number of 4-cycles in the graph by means of their structural properties. The method developed might be applied to other well-structured graph classes in order to count 4-cycles or modified to count cycles of ...
Malajovich, Beatriz +2 more
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On p‐power freeness in positive characteristic [PDF]
Mathematische Nachrichten, 2021 AbstractIn this note, we study base point freeness up to taking p‐power, which we will call p‐power freeness. We first establish some criteria for p‐power freeness as analogues of criteria for semi‐ampleness. We then apply these results to three‐dimensional birational geometry.
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