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New frontiers in THz quantum cascade lasers
(Massachusetts Institute of Technology, 2020)
Terahertz (THz) frequencies (0.5-10 THz) are among the most underdeveloped electromagnetic spectra, even though their application potentials are great in imaging, sensing, and communications. This underdevelopment is ...
Applications of fine-grained complexity
(Massachusetts Institute of Technology, 2020)
This thesis is on the topic of the applications of Fine-Grained Complexity (FGC). FGC is concerned with categorizing computational problems by their running time up to low order terms in the exponent. FGC has been a very ...
Beyond predictive modeling : new computational aspects for deep learning based biological applications
(Massachusetts Institute of Technology, 2020)
Next generation sequencing and large-scale synthetic DNA synthesis have enabled advances in biological studies by providing high-throughput data that can eciently train machine learning models. Deep learning models have ...
Convex optimization and machine learning for scalable verification and control
(Massachusetts Institute of Technology, 2020)
Having scalable verification and control tools is crucial for the safe operation of highly dynamic systems such as complex robots. Yet, most current tools rely on either convex optimization, which enjoys formal guarantees ...
Learning distributions of transformations from small datasets for applied image synthesis
(Massachusetts Institute of Technology, 2020)
Much of the recent research in machine learning and computer vision focuses on applications with large labeled datasets. However, in realistic settings, it is much more common to work with limited data. In this thesis, we ...
Towards a cognitive network management and control system
(Massachusetts Institute of Technology, 2020)
Future networks have to accommodate an increase of 3-4 orders of magnitude in data rates with heterogeneous session sizes and strict time deadline requirements. The dynamic nature of scheduling of large transactions and ...
Towards lightweight high-voltage power conversion
(Massachusetts Institute of Technology, 2020)
An emerging application, electroaerodynamic (EAD) propulsion, has stimulated the needs for light-weight high voltage dc-dc and dc-ac power converters. Weight reduction of these converters in the operating range of interest ...
Sigma shapes : parametric shape estimation for view and interaction planning
(Massachusetts Institute of Technology, 2020)
It is often useful for robots to actively build a model of an unknown 3D scene to enable tasks such as manipulation, mapping and object search. To do so requires choosing a representation to accumulate spatial knowledge, ...
Statistical privacy and security
(Massachusetts Institute of Technology, 2020)
The tremendous increase of personal data being shared online, along with the rapid development of data mining techniques is a serious threats to privacy and security, as evidenced by the numerous privacy and security ...
Ohmic contact to monolayer semiconductors
(Massachusetts Institute of Technology, 2020)
Scaling of silicon transistors is reaching its physical limits due to severe short channel effects, threatening to end Moore's law. Advanced beyond-silicon electronic technology requires discoveries of both new channel ...