Suggested Topics within your search.
Suggested Topics within your search.
- Economic conditions 6
- Law 6
- Criminal law 5
- Politics and government 5
- Economic development 4
- Economic policy 4
- History and criticism 4
- Economic aspects 3
- History 3
- Methodology 3
- Public administration 3
- Soil conservation 3
- Agriculture 2
- Application software 2
- Appreciation 2
- Children 2
- Civil society 2
- Computer-assisted instruction 2
- Constitutional law 2
- Education, Elementary 2
- Educational technology 2
- Evaluation research (Social action programs) 2
- Experimental fiction 2
- Globalization 2
- Information technology 2
- Internet in education 2
- Internet in public administration 2
- Mass media 2
- Medicine 2
- Moral and ethical aspects 2
-
9521
Investigation of a Random-Fractal Antenna Based on a Natural Tree-Leaf Geometry
Published 2017-01-01“…Both the impedance matching properties and the radiation patterns of the antenna are studied over the frequency band 1–6 GHz. Four configurations are designed by increasing the complexity of the structure, which ranges from iteration 0 to iteration 3. …”
Get full text
Article -
9522
ANALYSIS ON RESPONSE OF TOWER CRANE STRUCTURES UNDER RANDOM EARTHQUAKE EXCITATIONS
Published 2016-01-01“…The analysis reveals that the force of tower crane increase significantly under vertical seismic excitation than X-direction,Z-direction excitation have the greatest influence in tower body bending moment; the primary reason of tower arm fracture is vertical seismic action,too large seismic wave cause tower body capsized easily.…”
Get full text
Article -
9523
100 Tbit/s Optical Transmission Technology on Single Mode Fiber
Published 2015-10-01“…With the rapid development of the information society,the demand for the transmission capacity of the backbone network is becoming more and more urgent.Firstly,the background of 100 Tbit/s optical transmission technology on single mode fiber(SMF)was introduced.Then some large capacity optical transmission experiments on SMF in recent years were compared.Next,the technical route of 100 Tbit/s optical transmission system on SMF was analyzed,and it was focused on the system experiment of C and L band 100.2 Tbit/s dual polarization DFT-S 128QAM OFDM signal transmission over 80 km G.652 fiber which was first in China.Finally,research foreground of 100 Tbit/s optical transmission technology on SMF was prospected.…”
Get full text
Article -
9524
En órbita emocional: Lupus de Frederik Peeters
Published 2014-08-01“… Lupus (2002-2006) de Frederik Peeters es una peculiar historieta de ciencia ficción que desconcierta los tópicos del género en el cómic y con ellos las expectativas del lector mayoritario del mercado francobelga de la bande dessinée. Este trabajo se propone analizar el proyecto narrativo de Peeters en dicha obra, su utilización de los recursos genéricos como herramientas expresivas para desarrollarlo y el tratamiento gráfico peculiar que da a su relato, a fin de valorar la significación estética del título. …”
Get full text
Article -
9525
ANALYTICAL STUDY OF THE STATIC THERMOMECHANICAL STRESSES OF THE ASSEMBLIES WITH OPTIONAL RING FLANGES. ROTATION OF THE FLANGE RING AROUND THE CIRCUMFERENCE OF CENTERS FOR BOLT HOLE...
Published 2021-10-01“…A linear algebraic system is formed in which both external loads (pressure, temperature) and connecting loads (bending unit moments and unit forces) are present. …”
Get full text
Article -
9526
The Baker’s Dozen: Key Nations Can and Should Act Together to Prevent Further Dangerous Climate Change
Published 2009-09-01“…Most international responses to climate change assume we need a ‘global’ solution. Game theory and political science both support limiting the negotiating parties to enable a more rapid and aggressive response. …”
Get full text
Article -
9527
Challenge and strategy of 5G radio optimization
Published 2020-01-01Subjects: Get full text
Article -
9528
Effect of Mn Doping on Properties of CdS Quantum Dot-Sensitized Solar Cells
Published 2014-01-01“…However, the photoelectric conversion efficiency of QDSSCs is still lower than the DSSCs because of the severe recombination of electrons of quantum dots conduction band. In order to improve the photoelectric conversion efficiency of QDSSCs, impurity element Mn2+ is doped into the precursor solution of cadmium sulfide (CdS). …”
Get full text
Article -
9529
Development of a Low Cost Assistive Listening System for Hearing-Impaired Student Classroom
Published 2013-01-01“…Key specifications include transmitting in 2.4 GHz ISM band with eight selectable transmission channels, battery operated and chargeable, pocket size, and ranged up to thirty metres. …”
Get full text
Article -
9530
Application of Evolutionary Computation in Automotive Powertrain Mount Tuning
Published 2006-01-01“…Nodal point of flexible powertrain bending was used to define the envelop for transmission mount locations. …”
Get full text
Article -
9531
STUDY ON CALCULATIONS OF MESHING STIFFNESS OF GEAR TEETH OF PLANETARY GEAR REDUCER OF LESS TOOTH DIFFERENCE WITH BIASING CRANKSHAFT BASED ON MATLAB
Published 2016-01-01“…To calculate the different meshing points stiffness of the internal gear pairs of planetary gear reducer of less tooth difference with biasing crankshaft,the parameter and engagement angle equation of the internal and external tooth of the reducer is established; the tooth is regarded as a cantilever beam with variable sections,the numerical model used to calculate the different deformation of the tooth is built respectively,and adopts the differential quadrature method when calculating the bending and shear deformations of the variable section beams,the Matlab program to compute the different meshing points stiffness is also compiled,the method is verified with living example and experiment. …”
Get full text
Article -
9532
Complications Using Bioabsorbable Cross-Pin Femoral Fixation: A Case Report and Review of the Literature
Published 2011-01-01“…We reviewed the literature for all complications associated with the Bio-TransFix implant and present a case report of a patient status after ACL reconstruction using Bio-TransFix cross-pin femoral fixation with iliotibial band friction syndrome from a broken cross-pin four month post-operatively.…”
Get full text
Article -
9533
Sn and Ti influences on intermetallic phases damage in hot dip galvanizing
Published 2012-09-01“…In this work a comparative microstructural analysis, in Zn-Sn and Zn-Ti coatings, is performed to evaluate intermetallic phases formation kinetics and the influence of intermetallic microstructure on coating damage under constant bending deformation.…”
Get full text
Article -
9534
Mechanochemical Synthesis of Visible Light Sensitive Titanium Dioxide Photocatalyst
Published 2011-01-01“…The UV-visible absorption spectrum showed narrowing the band gap width after grinding with an ammonium carbamate additive resulting in shift of the light absorption of the ground sample towards the visible region. …”
Get full text
Article -
9535
Research on the algorithm for reducing the PAPR of OFDM system based on quantum chaotic mapping
Published 2019-01-01“…Aiming at the high peak to average power ratio (PAPR) problem of OFDM system,a modified selective mapping algorithm based on quantum loigstic chaotic map was proposed.To solve the problem of fixed point and stable window,the quantum loigstic chaotic maps were used as random phase sequence vectors,which provided a large number signals with fine correlation and random characteristics,easy to produce and regenerate.Matlab simulation results show that the proposed algorithm effectively reduces the PAPR,increases the numbers of candidate signals,cuts down the amount of redundant information transmission,bring down the side band power.The proposed scheme has a broad application prospect in OFDM system.…”
Get full text
Article -
9536
Optical and Structural Properties of Thermally Evaporated Zinc Oxide Thin Films on Polyethylene Terephthalate Substrates
Published 2011-01-01“…The optical properties of ZnO on PET substrates were determined through the optical transmission method using an ultraviolet-visible spectrophotometer. The optical band gap values of ZnO thin films slightly decreased as the film thickness increased.…”
Get full text
Article -
9537
Optimal Design of the Fuzzy Reliability of Double Circular Arc Gear based on MATLAB
Published 2016-01-01“…Taking the double arc gear in the national standard GB/T12759-1991 as the analysis object,by using the theory of fuzzy mathematics and reliability optimization design method,considering arc gear transmission allowable stress randomness and fuzziness,taking the fuzzy reliability of arc gear bending modulus strength and contact strength and the modulus,tooth number,helix angle,longitudinal coincidence degree of gear as constraint condition,a minimum volume of arc gear optimization as target,the fuzzy reliability optimum design model of double arc gear is established,and a practical example is given,the results indicate that,the circular gear design with fuzzy reliability optimization design method has better rationality.…”
Get full text
Article -
9538
A COMPARATIVE STUDY OF THE APPLICATION OF DIFFERENT TCD IN CRANKSHAFT FATIGUE PROPERTY PREDICTION
Published 2020-01-01“…This paper,focus on the crankshaft bending fatigue property prediction research,first analyzes the stress distribution fitting approach based on a stress gradient approach,then the fatigue property of the crankshaft with the same material but different structure is predicted,finally corresponding experiment verification is conducted. …”
Get full text
Article -
9539
SUPPORT VECTOR MACHINE FOR HUMAN IDENTIFICATION BASED ON NON-FIDUCIAL FEATURES OF THE ECG
Published 2023-05-01“…Using the mean frequency, median frequency, band power, and Welch power spectral density (PSD) of ECG data, we proposed a novel biometric approach in this study. …”
Get full text
Article -
9540
Effect of Aging Treatment on the Damping Capacity and Mechanical Properties of Mg-6Al-1Zn Alloy
Published 2015-01-01“…The damping characteristics of un-heat-treated, solution treated, and aged Mg-6Al-1Zn specimens were determined by measuring the damping ratio and the logarithmic decrement of free vibrations of a bending beam clamped at one side. The microstructural evaluations confirmed that the β-Mg17Al12 phase was reprecipitated after aging and increased with an increase in aging time. …”
Get full text
Article