Andrew Achkar
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View article: RoboBrew: The Fully Autonomous Coffee Machine
RoboBrew: The Fully Autonomous Coffee Machine Open
Robotics has emerged in several domains in the current century. However, in the restoration field, mainly in coffee shops, applications are still limited. Therefore, RoboBrew presents a groundbreaking fully automated system poised to trans…
View article: Evidence for bond-disproportionation in LiNiO2 from x-ray absorption spectroscopy
Evidence for bond-disproportionation in LiNiO2 from x-ray absorption spectroscopy Open
The electronic structure of LiNiO$_2$, a promising Li-ion battery cathode material, has remained a challenge to understand due to its highly covalent yet correlated nature. Here we elucidate the electronic structure in LiNiO$_2$ and the re…
View article: Structured Pruning of Neural Networks With Budget-Aware Regularization
Structured Pruning of Neural Networks With Budget-Aware Regularization Open
Pruning methods have shown to be effective at reducing the size of deep neural networks while keeping accuracy almost intact. Among the most effective methods are those that prune a network while training it with a sparsity prior loss and …
View article: Spectral Metric for Dataset Complexity Assessment
Spectral Metric for Dataset Complexity Assessment Open
In this paper, we propose a new measure to gauge the complexity of image classification problems. Given an annotated image dataset, our method computes a complexity measure called the cumulative spectral gradient (CSG) which strongly corre…
View article: Orbital Symmetries of Charge Density Wave Order in YBa2Cu3O6+x
Orbital Symmetries of Charge Density Wave Order in YBa2Cu3O6+x Open
Charge density wave (CDW) order has been shown to compete and coexist with superconductivity in underdoped cuprates. Theoretical proposals for the CDW order include an unconventional $d$-symmetry form factor CDW, evidence for which has eme…
View article: Automated Failure Detection in Computer Vision Systems
Automated Failure Detection in Computer Vision Systems Open
Human validation of computer vision systems increase their operatingcosts and limits their scale. Automated failure detection canmitigate these constraints and is thus of great importance to thecomputer vision industry. Here, we apply a de…
View article: Material/element-dependent fluorescence-yield modes on soft X-ray absorption spectroscopy of cathode materials for Li-ion batteries
Material/element-dependent fluorescence-yield modes on soft X-ray absorption spectroscopy of cathode materials for Li-ion batteries Open
We evaluate the utilities of fluorescence-yield (FY) modes in soft X-ray absorption spectroscopy (XAS) of several cathode materials for Li-ion batteries. In the case of total-FY (TFY) XAS for LiNi0.5Mn1.5O4, the line shape of the Mn L3-edg…
View article: Nematicity in stripe-ordered cuprates probed via resonant x-ray scattering
Nematicity in stripe-ordered cuprates probed via resonant x-ray scattering Open
Disentangling intertwined orders In copper oxide superconductors, several types of order compete for supremacy. In addition to superconductivity, researchers have found periodic patterns in charge density (CDW order), as well as an asymmet…
View article: Charge Density Wave Order in Cuprate Superconductors Studied by Resonant Soft X-ray Scattering
Charge Density Wave Order in Cuprate Superconductors Studied by Resonant Soft X-ray Scattering Open
Cuprate high temperature superconductors have been the subject of intense investigation since their discovery in 1986. The nature of the pairing mechanism in these unconventional superconductors does not seem to be mediated by phonons, as …