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- Description:
- Mission-critical systems are those imperative systems whose failures can result in catastrophic consequences. Traditional techniques, such as manual investigation and testing, cannot ensure the absence of errors and security vulnerabilities within these systems. This dissertation leverages formal methods to comprehensively examine several mission-critical systems and their essential components. For each...
- Subject:
- Electrical engineering, Computer engineering, and Computer science
- Creator:
- Li, You
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 08/23/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16748 and etdadmin_upload_1013532
-
- Description:
- The field of distributed optimization algorithms is wide and growing, and new techniques for categorizing and analyzing existing algorithms are continually being developed. In this Thesis, we leverage control theoretic analysis and block diagram interpretations for existing algorithms to synthesize entirely new families of algorithms. These new algorithm families have...
- Keyword:
- Integral Quadratic Constraints, Multi-Agent Systems, Control Theory, Distributed Optimization, and Private Distributed Averaging
- Subject:
- Electrical engineering
- Creator:
- Donato Ridgley, Israel
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 08/23/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16667 and etdadmin_upload_1002370
-
- Description:
- Since Infrared radiation was discovered in 1800s, the research and applications on the infrared regime have been continually developed. The infrared detectors are the key technology in these applications and have been successfully used for medical imaging, light detection and ranging (LiDAR), free-space optical communication, target tracking and object identification...
- Keyword:
- Phototransistor, Molecular Beam Epitaxy, Infrared Photodetector, and Type-II Superlattices
- Subject:
- Electrical engineering
- Creator:
- Li, Jiakai
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 05/31/2023
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_954624 and http://dissertations.umi.com/northwestern:16389
-
- Description:
- Visual localization is a critical capability for autonomous systems, enabling them to accuratelyestimate their position and orientation within an environment using visual data. This thesis focuses on achieving a robust and reliable visual localization on both local and global level to enhance localization performance in a wide range of environments....
- Keyword:
- Visual Odometry, Visual Localization, Visual Place Recognition, and Cross-View Geo-Localization
- Subject:
- Electrical engineering
- Creator:
- Zhao, Pengbo
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 05/31/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16532 and etdadmin_upload_984400
-
- Description:
- We consider data-driven approaches for universal texture modeling via generative adversarial networks and inversion methods. We investigate the properties of the learned representation spaces and demonstrate that a strong link between texture analysis and synthesis is the key to successful texture modeling. First, we visit the problem of texture synthesis...
- Subject:
- Electrical engineering
- Creator:
- Lin, Jue
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 05/31/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_956970 and http://dissertations.umi.com/northwestern:16393
-
- Description:
- We consider data-driven approaches for universal texture modeling via generative adversarial networks and inversion methods. We investigate the properties of the learned representation spaces and demonstrate that a strong link between texture analysis and synthesis is the key to successful texture modeling. First, we visit the problem of texture synthesis...
- Subject:
- Electrical engineering
- Creator:
- Lin, Jue
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 03/24/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_956970 and http://dissertations.umi.com/northwestern:16393
-
- Description:
- Since Infrared radiation was discovered in 1800s, the research and applications on the infrared regime have been continually developed. The infrared detectors are the key technology in these applications and have been successfully used for medical imaging, light detection and ranging (LiDAR), free-space optical communication, target tracking and object identification...
- Keyword:
- Phototransistor, Molecular Beam Epitaxy, Infrared Photodetector, and Type-II Superlattices
- Subject:
- Electrical engineering
- Creator:
- Li, Jiakai
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 03/24/2023
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_954624 and http://dissertations.umi.com/northwestern:16389
-
- Description:
- In recent years, machine learning on graphs (or networks) has gone from a niche topic with only a few active researchers worldwide, to a heavily invested field with novel use cases for dealing with relationships and/or interactions within complex systems in the natural and social sciences. Traditionally, choosing the right...
- Keyword:
- cognitive science, graph neural networks, machine learning, neuroimaging, image processing, and artificial intelligence
- Subject:
- Artificial intelligence, Electrical engineering, and Computer science
- Creator:
- Azcona, Emanuel Aquiles
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 09/22/2022
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_922507 and http://dissertations.umi.com/northwestern:16184
-
- Description:
- Originally motivated by the emergence of networked systems lacking central coordination such as multiprocessors, wireless sensor networks and smart grids, the study of distributed optimization algorithms has been an active field of research spanning multiple decades. More recently, the rapid growth in the availability of high-dimensional datasets has posed the...
- Keyword:
- multi-agent systems, optimization, and distributed optimization
- Subject:
- Electrical engineering and Applied mathematics
- Creator:
- Iakovidou, Charikleia
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 09/22/2022
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16228 and etdadmin_upload_927521
-
- Description:
- X-ray imaging at nano and micro-scale is of great importance for the material science and defense industry. Large penetration depth and low wavelength of x-rays offer an important potential to image objects at high resolution and in a non-invasive process. While the ever-growing community is pursuing novel applications and looking...
- Keyword:
- Computed Tomography, Deep Image Priors, X-ray Ptychography, Deep Learning, Computational Imaging, and Computed Laminography
- Subject:
- Electrical engineering, Computational physics, and Computer science
- Creator:
- Barutcu, Semih
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 09/22/2022
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_927076 and http://dissertations.umi.com/northwestern:16218
-
- Description:
- In modern electronics, thermal management becomes one of the most crucial factors in the determination of the performance, quality and lifetime of devices. Especially with the development of internet of things and the digitization of worldwide information, the need for storage of giant amount of data and processing with fast...
- Keyword:
- Free-standing materials, Anisotropic materials, Thermometry, and Thermal management
- Subject:
- Electrical engineering
- Creator:
- Yan, Xueting
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/02/2022
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_856418 and http://dissertations.umi.com/northwestern:15825
-
- Description:
- Next generation cellular networks are expected to support a massive data traffic volume and satisfy a vast number of users that have latency-critical quality-of-service expectations. Towards serving this demand, it is envisaged that the interference management problem will be the main bottleneck due to the likeliness of a heavily interfering...
- Keyword:
- power control, deep Q-learning, reinforcement learning, actor critic learning, radio resource management, and Jakes fading model
- Subject:
- Electrical engineering, Computer science, and Engineering
- Creator:
- Nasir, Yasar Sinan
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/02/2022
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15788 and etdadmin_upload_849279
-
- Description:
- Object Detection is a core computer vision problem and can facilitate many image understanding problems. Object Detection has witnessed significant progress in the past decade especially after deep learning is successfully applied to this field. Most of the detection models focus on generalizing the trained model to unseen samples of...
- Keyword:
- relationship, object detection, unseen classes, generalization, and unseen samples of seen classes
- Subject:
- Electrical engineering
- Creator:
- Zhao, Xiangyun
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/02/2022
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15859 and etdadmin_upload_862789
-
- Description:
- Sub-wavelength matter’s interaction with far-field light is highly relevant for both fundamental scientific research, as well as many commercial, medical, and defense applications. For example, quantum computation depends on single identical photons produced by quantum dots characterized by far-field sources. Exoplanet detection uses cameras on Earth comprised of micron sized...
- Subject:
- Electrical engineering
- Creator:
- Hamilton, Travis
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 10/06/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15669 and etdadmin_upload_837670
-
- Description:
- The electric grid is changing rapidly with a proliferation of new technologies being integrated. There is a need to analyze the growth in technologies to help move towards a carbon-free electricity sector such as renewable generation and large scale battery installations. This is occurring at the same time as the...
- Subject:
- Electrical engineering
- Creator:
- Badia, Brendan Charles
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/28/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15578 and etdadmin_upload_819528
-
- Description:
- Photonics are useful in applications where high-bandwidth and low-loss interlinks are desired. One of the key components of a photonic interlink is an optoelectronic modulator which is used to encode data from an electrical signal on to an optical carrier. Many of the optoelectronic modulators typically used require integration with...
- Subject:
- Optics and Electrical engineering
- Creator:
- Wheaton, Skyler
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/28/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_806186 and http://dissertations.umi.com/northwestern:15503
-
- Description:
- Radiofrequency ablation is a minimally-invasive treatment method that aims to destroy undesired tissue by exposing it to alternating current in the 100 kHz to 800 kHz frequency range and heating it until it is destroyed via coagulative necrosis. Ablation treatment is gaining momentum especially in cancer research, where the undesired...
- Keyword:
- Ensemble Learning, Integrated Circuit, Cancer Therapy, Hardware Design, Machine Learning, and Ablation
- Subject:
- Artificial intelligence, Electrical engineering, and Biomedical engineering
- Creator:
- Besler, Emre
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 04/15/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_786973 and http://dissertations.umi.com/northwestern:15432
-
- Description:
- Lasers and optical resonators have been widely utilized in precision metrological devices, such as gyroscopes, accelerometers, and gravitational wave detectors. To meet the requirements for a variety of applications, both of the slow light effect and the fast light effect have been applied to the lasers and optical resonators to...
- Keyword:
- Light-atom interaction, Raman effect, Fast light, Slow light, and Laser gyroscopes
- Subject:
- Optics and Electrical engineering
- Creator:
- Zhou, Zifan
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 04/15/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_797631 and http://dissertations.umi.com/northwestern:15483
-
- Description:
- While the entire silicon industry has been blooming under Moore’s Law for decades, conventional digital implementation is approaching the “stall” of Moore’s Law due to many physical design limitations. Technology innovation now is going to take a different direction. Given the increasing demand for emerging applications' computational capacity, it is...
- Keyword:
- computer architecture, mixed-signal time-domain computing, analog computing, machine learning , compute in memory (CIM), and image processing
- Subject:
- Electrical engineering, Computer engineering, and Engineering
- Creator:
- Chen, Zhengyu
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/01/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15414 and etdadmin_upload_780953
-
- Description:
- This thesis studies the distributed optimization of protocols and linear precoding in multiple-input multiple-output (MIMO) wireless networks. We consider cellular systems including millimeter wave (mmWave) systems, frequency-division duplex (FDD) systems, and wideband time-division duplex (TDD) systems. Firstly, for mmWave systems, we design an efficient beam training protocol with multiple access...
- Subject:
- Electrical engineering
- Creator:
- Zhou, Hao
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/01/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_756322 and http://dissertations.umi.com/northwestern:15195
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