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Issue Info: 
  • Year: 

    2002
  • Volume: 

    58
  • Issue: 

    2
  • Pages: 

    115-120
Measures: 
  • Citations: 

    1
  • Views: 

    119
  • Downloads: 

    0
Keywords: 
Abstract: 

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 119

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesDownload 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesCitation 1 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesRefrence 0
Author(s): 

LAMBROPOULOS P.

Issue Info: 
  • Year: 

    2000
  • Volume: 

    63
  • Issue: 

    4
  • Pages: 

    455-503
Measures: 
  • Citations: 

    1
  • Views: 

    202
  • Downloads: 

    0
Keywords: 
Abstract: 

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 202

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesDownload 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesCitation 1 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesRefrence 0
Author(s): 

DURDURAN T. | CHOE R. | BAKER W.B.

Issue Info: 
  • Year: 

    2010
  • Volume: 

    73
  • Issue: 

    7
  • Pages: 

    76701-76743
Measures: 
  • Citations: 

    1
  • Views: 

    139
  • Downloads: 

    0
Keywords: 
Abstract: 

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 139

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesDownload 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesCitation 1 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesRefrence 0
Author(s): 

KIBLER B. | FATOME J. | FINOT C.

Journal: 

VIRTUAL

Issue Info: 
  • Year: 

    621
  • Volume: 

    1
  • Issue: 

    1
  • Pages: 

    790-795
Measures: 
  • Citations: 

    1
  • Views: 

    177
  • Downloads: 

    0
Keywords: 
Abstract: 

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 177

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesDownload 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesCitation 1 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesRefrence 0
Author(s): 

INNOCENZI P. | LEBEAU B.

Issue Info: 
  • Year: 

    2005
  • Volume: 

    15
  • Issue: 

    -
  • Pages: 

    3821-3831
Measures: 
  • Citations: 

    1
  • Views: 

    170
  • Downloads: 

    0
Keywords: 
Abstract: 

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 170

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesDownload 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesCitation 1 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesRefrence 0
Author(s): 

Issue Info: 
  • Year: 

    2022
  • Volume: 

    -
  • Issue: 

    -
  • Pages: 

    153-162
Measures: 
  • Citations: 

    1
  • Views: 

    20
  • Downloads: 

    0
Keywords: 
Abstract: 

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 20

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesDownload 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesCitation 1 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesRefrence 0
Issue Info: 
  • Year: 

    1997
  • Volume: 

    14
  • Issue: 

    11
  • Pages: 

    2884-2892
Measures: 
  • Citations: 

    1
  • Views: 

    158
  • Downloads: 

    0
Keywords: 
Abstract: 

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 158

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesDownload 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesCitation 1 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesRefrence 0
Author(s): 

TASLIMI M. | EBRAHIMZADEH A.

Journal: 

JOURNAL OF RADAR

Issue Info: 
  • Year: 

    2017
  • Volume: 

    4
  • Issue: 

    4 (SERIAL NO. 14)
  • Pages: 

    1-10
Measures: 
  • Citations: 

    0
  • Views: 

    1674
  • Downloads: 

    0
Abstract: 

Radar cross section (RCS) calculation is an important issue of objects stealth and identification. It is necessary to design the RCS software because of the high cost of RCS measurements in practice. In this paper, designing of efficient software using physical optics theorem for radar cross section calculation of the complex perfect electric conductors or complex dielectric objects for high frequencies is investigated. In this method, first the object will be meshed in Abaqus Software. Then the obtained data of every mesh is transferred to MATLAB Software and, after that, the physical optics theorem is applied for every mesh, with considering the summation of electric fields that is seen from each mesh. As the result, the radar cross section of total object will be obtained. Simulations results show the proposed method has good agreement with CST-MS results and determines the RCS of the objects with lower complexity in the lower time consuming.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 1674

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesDownload 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesCitation 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesRefrence 0
Issue Info: 
  • Year: 

    2014
  • Volume: 

    20
Measures: 
  • Views: 

    145
  • Downloads: 

    47
Keywords: 
Abstract: 

EVALUATING THE CAPABILITY OF ELECTRO SPINNING METHOD AS AN EFFICIENT VERSATILE APPROACH FOR FABRICATION OF NANOFIBERS [1], A CENTRAL COMPOSITE DESIGN (CCD) MODEL WAS USED TO DESIGN AN EXPERIMENTAL STRATEGY FOR INVESTIGATION OF EFFECTIVE FACTORS IN PRODUCTION OF POLY (VINYL ALCOHOL) (PVA) NANOFIBERS FABRICATED FROM AQUEOUS SOLUTIONS OF PVA. THE STUDIED VARIABLES WERE POLYMER SOLUTION CONCENTRATION, APPLIED VOLTAGE, DISTANCE BETWEEN NOZZLE AND COLLECTOR PLATE AND FLOW RATE OF SOLUTION INJECTION [2]. BEAD-FREE NANOFIBERS, WITH FIBER DIAMETER RANGING FROM211-645 NM WERE PRODUCED WITH DIFFERENT PROCESS PARAMETERS. THE INFLUENCE OF THESE PARAMETERS ON DIAMETER AND MORPHOLOGY OF OBTAINED PVA NANOFIBERS WAS STUDIED BY SEM ANALYSIS. AMONG ALL FACTORS, CONCENTRATION WOULD STRONGLY AFFECT THE NANOFIBER DIAMETER. ON-LINE CONTROL OF THE PROCESS IN FABRICATION OF POLYMERIC NANOFIBERS IS OF SEVERE INTEREST AND INFRARED SPECTROMETRIC FIBER OPTICS IS KNOWN AS A POWERFUL PROCESS ANALYZER FOR THE NONINVASIVE, ON-LINE AND REAL-TIME MONITORING.THUS, IN THE NEXT STEP, NONLINEAR PARTIAL LEAST SQUARES (N-PLS) TECHNIQUE WAS UTILIZED TO ESTIMATE THE AVERAGE DIAMETER OF NANOFIBERS BASED ON FIBER OPTIC NEAR-INFRARED SPECTRA. PERFORMING THE KENNARD-STONE (KS) ALGORITHM, THE MODEL WAS TRAINED AND BEING VALIDATED RESPECTIVELY. IT WAS OBSERVED THAT N-PLS USING THE KS ALGORITHM IS CAPABLE OF GENERALIZATION AND COULD CORRECTLY PREDICT THE AVERAGE DIAMETER OF NANOFIBER SAMPLES. IN THIS STUDY, 30 NANOFIBER SAMPLES WERE ANALYZED AND REASONABLE RESULTS WERE OBTAINED WITH HIGH ACCURACIES UP TO 99% AND 92% IN THE CALIBRATION AND VALIDATION SETS RESPECTIVELY.

Yearly Impact:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 145

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Author(s): 

ASADI Z. | Mohtashami v.

Issue Info: 
  • Year: 

    2017
  • Volume: 

    6
  • Issue: 

    2
  • Pages: 

    131-140
Measures: 
  • Citations: 

    0
  • Views: 

    210
  • Downloads: 

    218
Abstract: 

In this paper, the physical optics method is used to study the problem of electromagnetic scattering from Haack series nose cone. First, a meshing scheme is introduced which approximates the curvature of the surface by piecewise linear functions in both axial and rotational directions. This results in planar quadrilateral patches and enables efficient determination of the illuminated region and application of closed-form expression for computing physical optics integral. Then the ray-surface intersections are obtained using the implicit surface equation of Haack series nose cone. The equation obtained by the intersection test does not have analytical solution. Hence, the Steffensen method is applied to solve this equation numerically. To find the initial point for Steffensen method's iterations, a bounding cylinder is used. It provides high precision evaluation of initial point, fast convergence and short computation time. Moreover, if the ray does not intersect the bounding volume, it certainly misses the bounded object and hence does not need to be tested in the Steffensen method. The ray-cylinder intersection test has a simple analytical solution, which results in fast rejection of missed rays. Simulation results demonstrate the proper accuracy and efficiency of the presented algorithms.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 210

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