Results 41 to 50 of about 10,505,009 (388)

STATIC PERFORMANCE CHARACTERISTICS OF VORTEX RATE SENSOR

Journal of Engineering, 2011
The vortex rate sensor is a fluidic gyroscope with no moving parts and can be used in very difficultconditions like radiation, high temperature and noise with minimum cost of manufacturing andmaintenance. A vortex rate sensor made of wood has been designed and manufactured to studytheoretically and experimentally its static performance .A rig has been ...
Ali Abdul AL-Muhsen AL-Asady, Wisam Gasim Kadhum   +1 more
openaire   +3 more sources

A Flexible Mathematical Model for Dissimilar Operating Modes of a Switched Reluctance Machine

IEEE Access, 2018
Switched reluctance motor (SRM) is an energy efficient machine, which receives electrical energy from the power source and returns part of the stored magnetic energy back to the supply, during each cycle of the machine operation.
Ali Asghar Memon, Syed Asif Ali Shah, Wajiha Shah, Mazhar Hussain Baloch, Ghulam Sarwar Kaloi, Nayyar Hussain Mirjat   +5 more
doaj   +1 more source

Research on Authentic Signature Identification Method Integrating Dynamic and Static Features

Applied Sciences, 2022
In many fields of social life, such as justice, finance, communication and so on, signatures are used for identity recognition. The increasingly convenient and extensive application of technology increases the opportunity for forged signatures.
Jiaxin Lu, Hengnian Qi, Xiaoping Wu, Chu Zhang, Qizhe Tang   +4 more
doaj   +1 more source

Theoretical Analysis and Optimum Design of High Speed Air Film Thrust Bearings

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2007
Hydrodynamic air film thrust bearings are widely used for very high speed, lightly loaded rotating machinery such as gas expander, compressor, gyroscope and business machines, etc. In the design of hydrodynamic air film thrust bearings, it is of cardinal
Hiromu HASHIMOTO, Masayuki OCHIAI, Tadashi NANBA   +2 more
doaj   +1 more source

Static Analysis of Viscoelastic Supported Gas Foil Thrust Bearing with Journal Inclination

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2010
Thrust pads in rotary machines are often used to bear the axial load, sometimes part or whole of the rotor weight is also sustained by thrust pads when the machine is not installed horizontally.
Quan ZHOU, Yu HOU, Rugang CHEN, Shuangtao CHEN, Chunzheng CHEN   +4 more
doaj   +1 more source

STATIC CHARACTERISTICS ANALYSIS OF INDIRECT CONTROL FLOW VALVE

Advanced Engineering Research, 2014
A model of the indirect control flow divider for the steady state operation which maintains a twin-engined hydromechanical system in the synchronous common mode is considered.
V. I. Antonenko
doaj   +1 more source

Combining transient dynamics and logistic‐asymptotic growth to study the recovery of two seabird populations after rat eradication

Population Ecology, EarlyView.
This study examines the demographic dynamics of two seabird populations on Tromelin Island, 15 years after the eradication of brown rats. The results indicate that these populations are in good health and are expected to continue growing until breeding sites are saturated in about a century.
Merlène Saunier, Christophe Barbraud, Maxime Amy, Sabine Orlowski, Jean Hivert, Gabrielle Dicque, Matthieu Le Corre   +6 more
wiley   +1 more source

Mathematical modeling of rheostat-reactor start of wound-rotor induction motors

Electrical engineering & Electromechanics, 2022
Introduction. Wound-rotor induction motors are less common compared squirrel-cage induction motors. However, they occupy a significant share among electric drives with difficult starting conditions.
V. S. Malyar, O. Ye. Hamola, V. S. Maday, I. I. Vasylchyshyn   +3 more
doaj   +1 more source

The unpredictably eruptive dynamics of spruce budworm populations in eastern Canada

Population Ecology, EarlyView.
We examine historical population data for spruce budworm from several locations through the period 1930–1997, and use density‐dependent recruitment curves to test whether the pattern of population growth over time is more consistent with Royama's (1984; Ecological Monographs 54:429–462) linear R(t) model of harmonic oscillation at Green River New ...
Barry J. Cooke, Jacques Régnière
wiley   +1 more source

Geographic variation in walking activity in the red flour beetle Tribolium castaneum

Population Ecology, EarlyView.
This study examined whether there is geographic variation in field populations, focusing on the moving activity in the red flour beetle Tribolium castaneum. Results showed significant differences in moving activity among field populations but no correlation with latitude or meteorological factors.
Kentarou Matsumura
wiley   +1 more source