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1. |
Record Nr. |
UNINA9910557644003321 |
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Autore |
Gibson Heidi (Educator) |
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Titolo |
From ideas to action : transforming learning to inspire action on critical global issues / / Heidi Gibson |
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Pubbl/distr/stampa |
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Washington, D.C. : , : Smithsonian Scholarly Press, , 2021 |
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Descrizione fisica |
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1 electronic resource (77 p.) |
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Collana |
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Disciplina |
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Soggetti |
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Global method of teaching |
Education - Curricula - United States |
Science - Study and teaching - United States |
Social sciences - Study and teaching - United States |
Sustainable development - International cooperation |
Education - Curricula |
Science - Study and teaching |
Social sciences - Study and teaching |
United States |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Nota di bibliografia |
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Includes bibliographical references. |
Includes bibliographical references (pages 67-72) and index. |
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Sommario/riassunto |
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Transforming learning from a passive to an active endeavor is critically important in today’s world. In 2015, the United Nations identified seventeen Sustainable Development Goals that represent a global consensus on the world’s most pressing issues. Realizing these ambitious goals will require concerted action at all levels, including local action. Young people are valuable components of this, and their learning experiences should both inform and inspire them as current and future changemakers. From Ideas to Action articulates the theoretical basis of Smithsonian Science for Global Goals, a series of socio-scientific community research guides focused on achieving a systemic understanding of global problems with the goal of inspiring young people to take informed and sustained action to help address |
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2. |
Record Nr. |
UNINA9911019489003321 |
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Autore |
Wang Bu-Chin |
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Titolo |
Digital signal processing techniques and applications in radar image processing / / Bu-Chin Wang |
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Pubbl/distr/stampa |
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Hoboken, N.J., : John Wiley, c2008 |
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ISBN |
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9786611766702 |
9781281766700 |
1281766704 |
9780470377765 |
0470377763 |
9780470377826 |
0470377828 |
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Descrizione fisica |
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1 online resource (368 p.) |
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Collana |
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Wiley series on information and communications technologies |
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Disciplina |
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Soggetti |
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Signal processing - Digital techniques |
Remote sensing |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references (p. 333) and index. |
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Nota di contenuto |
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DIGITAL SIGNAL PROCESSING TECHNIQUES AND APPLICATIONS IN RADAR IMAGE PROCESSING; CONTENTS; Preface; Acknowledgment; List of Symbols; List of Illustrations; 1 Signal Theory and Analysis; 1.1 Special Functions Used in Signal Processing; 1.1.1 Delta or Impulse Function δ(t); 1.1.2 Sampling or Interpolation Function sinc (t); 1.2 Linear System and Convolution; 1.2.1 Key Properties of Convolution; 1.2.1.1 Commutative; 1.2.1.2 Associative; 1.2.1.3 Distributive; 1.2.1.4 Timeshift; 1.3 Fourier Series Representation of Periodic Signals; 1.3.1 Trigonometric Fourier Series |
1.3.2 Compact Trigonometric Fourier Series1.3.3 Exponential Fourier Series; 1.4 Nonperiodic Signal Representation by Fourier Transform; 1.5 Fourier Transform of a Periodic Signal; 1.6 Sampling Theory and Interpolation; 1.7 Advanced Sampling Techniques; 1.7.1 Sampling with |
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Bandpass Signal; 1.7.2 Resampling by Evenly Spaced Decimation; 1.7.3 Resampling by Evenly Spaced Interpolation; 1.7.4 Resampling by Fractional Rate Interpolation; 1.7.5 Resampling from Unevenly Spaced Data; 1.7.5.1 Jacobian of Transformation; 2 Discrete Time and Frequency Transformation |
2.1 Continuous and Discrete Fourier Transform2.2 Key Properties of Discrete Fourier Transform; 2.2.1 Shifting and Symmetry; 2.2.2 Linear and Circular Convolution; 2.2.3 Sectioned Convolution; 2.2.3.1 Overlap-and-Add Method; 2.2.3.2 Overlap-and-Save Method; 2.2.4 Zero Stuffing and Discrete Fourier Transform (DFT) Resolution; 2.3 Widows and Discrete Fourier Transform; 2.4 Fast Fourier Transform; 2.4.1 Radix-2 Fast Fourier Transform (FFT) Algorithms; 2.5 Discrete Cosine Transform (DCT); 2.5.1 Two-Dimensional DCT; 2.6 Continuous and Discrete Signals in Time and Frequency Domains |
2.6.1 Graphical Representation of DFT2.6.2 Resampling with Fractional Interpolation Based on DFT; 3 Basics of Antenna Theory; 3.1 Maxwell and Wave Equations; 3.1.1 Harmonic Time Dependence; 3.2 Radiation from an Infinitesimal Current Dipole; 3.2.1 Magnetic Vector Potential Due to a Small but Finite Current Element; 3.2.2 Field Vectors Due to Small but Finite Current Radiation; 3.2.3 Far-Field Region; 3.2.4 Summary of Radiation Fields; 3.3 Radiation from a Half-Wavelength Dipole; 3.4 Radiation from a Linear Array; 3.4.1 Power Radiation Pattern from a Linear Array |
3.5 Power Radiation Pattern from a 2D Rectangular Array3.6 Fundamentals of Antenna Parameters; 3.6.1 Radiation Beamwidth; 3.6.2 Solid Angle, Power Density, and Radiation Intensity; 3.6.3 Directivity and Gain; 3.6.4 Antenna Impedance; 3.6.5 Antenna Efficiency; 3.6.6 Effective Area and Antenna Gain; 3.6.7 Polarization; 3.7 Commonly Used Antenna Geometries; 3.7.1 Single-Element Radiators; 3.7.2 Microstrip Antennas and Antenna Array; 4 Fundamentals of Radar; 4.1 Principles of Radar Operation; 4.2 Basic Configuration of Radar; 4.2.1 Waveform Generator; 4.2.2 Transmitter; 4.2.3 Antenna System |
4.2.4 Receiver |
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Sommario/riassunto |
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A self-contained approach to DSP techniques and applications in radar imagingThe processing of radar images, in general, consists of three major fields: Digital Signal Processing (DSP); antenna and radar operation; and algorithms used to process the radar images. This book brings together material from these different areas to allow readers to gain a thorough understanding of how radar images are processed.The book is divided into three main parts and covers:* DSP principles and signal characteristics in both analog and digital domains, advanced signal sampling, and |
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