| 3 | -- | 11 | Christian Jutten. Ethical and Ecological Issues in Signal Processing [From the Editor] |
| 4 | -- | 5 | Ahmed H. Tewfik. An Existential Question [President's Message] |
| 5 | -- | 6 | Athina P. Petropulu. Signal Processing in Our Digital Era [President's Message] |
| 7 | -- | 15 | Ali H. Sayed. 2021 IEEE Signal Processing Society General Election Results for President-Elect, Members-at-Large, and Regional Directors-at-Large [Society News] |
| 8 | -- | 11 | John Edwards. Signal Processing Underpins Advances in Medical Diagnostics and Treatments: New signal processing-supported technologies benefit both physicians and patients [Special Reports] |
| 12 | -- | 15 | Mary L. Comer, Jeff P. Simmons, Steve Niezgoda, Charles A. Bouman, Benjamin Berkels. Signal Processing for Advanced Materials [From the Guest Editors] |
| 16 | -- | 24 | Mary L. Comer, Jeff P. Simmons. The Markov Random Field in Materials Applications: A synoptic view for signal processing and materials readers |
| 25 | -- | 31 | Philipp M. Pelz, Ian Johnson, Colin Ophus, Peter Ercius, Mary C. Scott. Real-Time Interactive 4D-STEM Phase-Contrast Imaging From Electron Event Representation Data: Less computation with the right representation |
| 32 | -- | 43 | S. V. Venkatakrishnan 0001, K. Aditya Mohan, Amirkoushyar Ziabari, Charles A. Bouman. Algorithm-Driven Advances for Scientific CT Instruments: From model-based to deep learning-based approaches |
| 44 | -- | 54 | Doga Gürsoy, Yu-chen Karen Chen-Wiegart, Chris Jacobsen. Lensless X-Ray Nanoimaging: Revolutions and opportunities |
| 55 | -- | 67 | Péter Kovács, Bernhard Lehner, Gregor Thummerer, Günther Mayr, Peter Burgholzer, Mario Huemer. Surfing Virtual Waves to Thermal Tomography: From model- to deep learning-based reconstructions |
| 68 | -- | 77 | Khemraj Shukla, Ameya D. Jagtap, James L. Blackshire, Daniel Sparkman, George Em Karniadakis. A Physics-Informed Neural Network for Quantifying the Microstructural Properties of Polycrystalline Nickel Using Ultrasound Data: A promising approach for solving inverse problems |
| 78 | -- | 88 | Lan Fu, Hongkai Yu, Xiaoguang Li, Craig P. Przybyla, Song Wang 0002. Deep Learning for Object Detection in Materials-Science Images: A tutorial |
| 89 | -- | 103 | Josh Kacher, Yao Xie 0002, Sven P. Voigt, Shixiang Zhu, Henry Shaowu Yuchi, Jordan Key, Surya R. Kalidindi. In Situ Transmission Electron Microscopy: Signal processing challenges and examples |
| 104 | -- | 108 | Chandler A. Becker, James A. Warren. Progress in Materials Data Availability and Application: A review |
| 109 | -- | 116 | Federica Lago, Cecilia Pasquini, Rainer Böhme, Hélène Dumont, Valérie Goffaux, Giulia Boato. More Real Than Real: A Study on Human Visual Perception of Synthetic Faces [Applications Corner] |
| 118 | -- | 125 | Petre Stoica, Xiaolei Shang, Yuanbo Cheng. The Cramér-Rao Bound for Signal Parameter Estimation From Quantized Data [Lecture Notes] |
| 126 | -- | 131 | Emil Björnson, Lucio Marcenaro. Configuring an Intelligent Reflecting Surface for Wireless Communications: Highlights from the 2021 IEEE Signal Processing Cup student competition [SP Competitions] |