Suggested Topics within your search.
Suggested Topics within your search.
- Digital techniques 2
- Photography 2
- Anatomy 1
- Anesthesia 1
- Computer graphics 1
- Critical Care 1
- Digitale Photographie 1
- Economic conditions 1
- Economic development 1
- Economic forecasting 1
- Economic stabilization 1
- General 1
- Image processing 1
- Mathematical Concepts 1
- PHOTOGRAPHY 1
- Phototechnik 1
- Physical Phenomena 1
- Physiology 1
- Regression analysis 1
- Social sciences 1
- Statistical methods 1
- Techniques 1
-
2741
Validation of a Sunlight Availability Simulation Model
Published 2024-12-01“…Sunlight availability for plants plays an important role in determining whether a plant can produce its maximum productivity output. The study developed a Rhinoceros simulation model that can predict the sunlight availability received in the surface of interest on a vertical farming (VF) shelf design for a particular crop, given that the weather data of the location is known. …”
Get full text
Article -
2742
Effects of ADC Nonlinearity on the Spurious Dynamic Range Performance of Compressed Sensing
Published 2014-01-01“…It presents intuitive yet quantitative insights into the harmonics of quantization output of AIC, and the effect of other AIC nonlinearity on the spurious dynamic range (SFDR) performance is also analyzed. …”
Get full text
Article -
2743
Le poète et l’anarchiste : du côté de la pauvreté errante à la fin du XIXe siècle
Published 2007-04-01“…La fin du XIXe siècle lance un regard cruel sur ses pauvres, surtout quand ceux-ci sont marginalisés. Ces « mauvais pauvres » accusés de tous les vices et de toutes les tares trouvent chez les anarchistes et dans les marges littéraires leurs plus fidèles soutiens. …”
Get full text
Article -
2744
Design of Multi-mode Hydraulic Mechanical Composite Transmission Device for Tractor
Published 2020-03-01“…The results show that the designed multi-mode hydraulic mechanical composite transmission output torque changes continuously, the transmission efficiency is above 0.8, and in addition to the pure hydraulic mode, the hydraulic power split ratio of other modes is controlled between -0.2~0.3. …”
Get full text
Article -
2745
An Analytical Multimodulus Algorithm for Blind Demodulation in a Time-Varying MIMO Channel Context
Published 2010-01-01“…This paper addresses the issue of blind multiple-input multiple-output (MIMO) demodulation of communication signals, with time-varying channels and in an interception context. …”
Get full text
Article -
2746
Event-Triggered State Estimation for a Class of Delayed Recurrent Neural Networks with Sampled-Data Information
Published 2012-01-01“…The main purpose is to estimate the neuron states through output sampled measurement; a novel event-triggered scheme is proposed, which can lead to a significant reduction of the information communication burden in the network; the feature of this scheme is that whether or not the sampled data should be transmitted is determined by the current sampled data and the error between the current sampled data and the latest transmitted data. …”
Get full text
Article -
2747
Robust Estimation-Based Control Strategies for Induction Motors
Published 2020-01-01“…The tests performed under several practical assumptions show that the closed loop behaviour of the system is adequate, and the output variable follows the imposed time varying reference, despite the considered uncertainties and disturbances acting on the process.…”
Get full text
Article -
2748
LIGETI’S ROMANIAN CONCERTO: FROM WAX CYLINDERS TO SYMPHONY ORCHESTRA
Published 2013-06-01“… Beneath the Romanian Concerto’s colourful orchestral surface, evoking the folk-inspired music of both Bartók and Enescu, lies Ligeti’s early activity as a researcher (1949-1950) at the Folklore Institute in Bucharest. Placing cutouts from the printed score side by side with the manuscripts of his transcriptions kept at the Paul Sacher Foundation, one may discover this piece’s origins, and the process by which Ligeti, the “archaeologist” brought the rich stock of Romanian folk music from the wax cylinders to the symphony orchestra. …”
Get full text
Article -
2749
Research on Architecture of LEO Satellite Internet of Things and Key Technologies
Published 2021-12-01“…First, we analyzed the composition and demand characteristics of LEO satellite IoTs, and designed an architecture of LEO satellite IoTs.Second, to extracted characteristics of electromagnetic environment and channel, we studied electromagnetic environment and channel sensing methods through constructing neural network model.Then, we investigated an active terminal-identifi cation method for detecting active terminals.Finally, considered multiple-input multiple-output as the main approach to improved the capacity of terrestrial mobile communication systems, we explored a pair of algorithms of mining satellite spatial resources for realizing the collision mitigation and capacity improvement of LEO IoT terminals.Simulation results showed that the designed method sofmining spatial-domain resources could mitigated eff ectively signal collisions among IoT terminals, and improved signifi cantly the concurrent accessing number of LEO satellite IoT terminals.…”
Get full text
Article -
2750
HIGHER ECONOMIC EDUCATION IN CONCEPTS OF SYNERGETIC PARADIGM NONLINEAR THINKING
Published 2014-06-01“…Modern economic education as a form of knowledge and learning requires active use of synergistic methods for its modernization and output to a new level of training future specialists and economists. …”
Get full text
Article -
2751
Design and Performance Analysis of a Sub-micron Piezoelectric Flexible Micro Drive System
Published 2020-06-01“…In order to get the precision linear motion output,a piezoelectric flexible micro drive system that composed of piezoelectric actuators and flexible micro mechanism is designed,and the system has sub-micron positioning accuracy driven by piezoelectric actuator. …”
Get full text
Article -
2752
Interference alignment based spectrum sharing and user scheduling for cognitive radio MIMO system
Published 2014-01-01“…In communication scenario with multiple cognitive radio (CR) multi-input multi-output (MIMO) users,signal processing algorithm was designed based on interference alignment (IA) such that transmissions of cognitive and authorized signal were carried out in mutual orthogonal sub-spaces.Conflict-free utilization of spare spatial channel(s) authorized by primary system was achieved by cognitive user.Moreover,the difference of spatial transmission performance originating from various channel matrices was exploited to implement appropriate user scheduling.Simulation results show that the proposed method can utilize spare spatial channel resource effectively and obtain multiuser diversity gain.On the premise that authorized service is protected from disturbing,transmission rate of cognitive user is improved.…”
Get full text
Article -
2753
Design scheme of physical layer security for intelligent reflecting surface-assisted MISO communication system
Published 2022-01-01“…Intelligent reflecting surface (IRS) improves the physical layer security of the communication systems by adjusting the phases of the reflecting units.A scheme of physical layer security design based on alternative iteration was proposed for IRS-assisted multiple input single output (MISO) communication system.Firstly, aiming at maximizing the secrecy rate, a non-convex objective function with non-convex constraints was constructed.Secondly, the Dinkelbach algorithm and Riemannian manifold optimization algorithm were adopted to transform the non-convex problem into a series of solvable sub-problems.Finally, the alternate iteration method was used to achieve the optimization design of transmit beamforming and IRS phase shift matrix.The simulation results show that, compared with the several existing schemes, the proposed scheme can achieve a better tradeoff between computational complexity and system security rate.…”
Get full text
Article -
2754
Establishment of Hysteresis Stiffness Model and Kinematic Precision Analysis of Manipulators
Published 2022-11-01“…Considering the hysteresis effect of the harmonic reducer in the joint and that when the joint is subject to alternating load torques, the hysteresis effect will have great influence on the output precision. However, the load on each joint of the multi-DOF manipulator is not constant and the hysteresis effect of harmonic reducers in the joint should be considered when analyzing the precision of the manipulator's end motion. …”
Get full text
Article -
2755
Une politique de l’ennui
Published 2019-02-01“…Retraite (2014) et Rénovation (2016) de Renaud Jean ainsi que La Vie littéraire (2014) de Mathieu Arsenault ne prennent pas le parti d’une subversion ou d’une rupture esthétique particulière : ces auteurs n’ont pas nécessairement une « posture engagée ». On y retrace plutôt différentes formes d’ennui, qui semble chaque fois moins un état passif qu’une réaction à une réalité sociale, particulièrement le travail et le discours économique de l’activité et de la performance. …”
Get full text
Article -
2756
A Novel High-Efficiency S-Band Conical Axial Vircator
Published 2025-01-01“…The Particle-in-Cell simulation carried out by CST Studio suite 2024, shows an average output power of 50 MW and an efficiency up to 60% than the basic vircator configuration ones, with an applied voltage of 520 kV and a cathode current of 20 kA at 2.55 GHz.…”
Get full text
Article -
2757
Research on Optimal Power Generation Scheduling for Reservoir in Multi-Tailed River Channels
Published 2024-01-01“…The intricate engineering design and functional constraints of Gezhen Reservoir were considered, and an optimal power generation scheduling model for Gezhen Reservoir that guaranteed output was established. Meanwhile, a two-layer solving strategy for the outer layer of the whole reservoir and the inner layer of the two-unit cooperation was proposed. …”
Get full text
Article -
2758
A joint optimization algorithm based on energy efficiency maximization for massive MIMO systems
Published 2017-12-01“…For the massive multi-cell multi-input multiple-output (MIMO) communication uplink system with unknown channel status information,a resource allocation algorithm which jointly optimizes the pilot sequence length,pilot symbol power and data symbol power was proposed.With the maximum ratio combining (MRC) receiver,the influence of circuit power was considered,pilot contamination and the constraint of maximum transmission power,and a nonconvex function modeled with the goal of maximizing energy efficiency (EE) was established.Firstly,the fractional form was transformed into an equivalent subtractive form by using the properties of fractional programming and then decomposed into a series of DC problems,finally,by using an iterative optimization algorithm,the three variables were alternately adjusted with maximizing the energy efficiency.Simulation results show that with the increasing of the maximum symbol transmission power,the proposed scheme can still have the great EE performance for the massive MIMO systems.…”
Get full text
Article -
2759
Optimization of Pearson Ⅲ Frequency Curve Based on R Software
Published 2021-01-01“…Based on the 47-year annual runoff data of a hydrological station, this paper defines the optimal fitting parameters and frequency distribution curve according to the curve fitting method and the minimum sum of squares of longitudinal deviation, carries out the hydrological frequency calculation, fitting and mapping through the R and Notepad++ software, and adds the automatic finding program of the optimal fitting parameters in the fitting process to output the empirical frequency, the initial value of statistical parameters, the minimum sum of squares of longitudinal deviation and the optimal frequency curve. …”
Get full text
Article -
2760
Development and Research Status of Key Technology of Land Gas Turbine Gearbox in China
Published 2020-07-01“…Gas turbine gearbox is a device that transfers the output power of gas turbine to the working machine after deceleration and torsion increase,and it is one of the key supporting systems of gas turbine units. …”
Get full text
Article