Solar Wind Ion parameters from ACE/SWEPAM. Level 2 data, 64-second averages. Parameters include proton density, temperature (radial component) and flow speed, flow velocity vector in GSE, GSM and RTN coordinates, and alpha to proton density ratio. ACE position vectors in GSE and GSM are included. The data are accessible via ftp in HDF and CDF from the ACE Science Center and CDAWeb, respectively, and in ASCII format from the value-added interfaces at those sites. Hourly...
This dataset contains ten 10X scRNA-seq datasets (two v2 from Desai et al., DOI: 10.1126/science.abc6506, eight v3 generated by 10X Genomics) that have been processed using pipelines for spliced and unspliced molecule quantification. We used velocyto, kallisto|bustools (kb), and salmon/alevin-fry to process the raw FASTQ files, and output loompy files with spliced and unspliced count matrices. The scripts used for processing, as well as the notebook used for post-processing, visualization, and comparisons are available at...
Cell Metadata csv for 10x VMH neurons from Kim et al. 2019
ACE Solar Wind Electron Proton Alpha Monitor (SWEPAM) Suprathermal Electron Pitch Angle 128-Second Level 3 DataDavid McComas, Ruth Skoug, Dot Delapp, Heather Elliott & Andrew Davis
Suprathermal Electron Pitch Angle data from ACE/SWEPAM. Level 3 data, 128-second averages. These pitch angle distributions are calculated automatically by a computer code, and have not been validated by a person. It is therefore likely that they include some artifacts and erroneous values. These data files contain suprathermal electron pitch angle distribution functions (s^3 cm^-6) at 272 eV from the ACE/SWEPAM-E instrument. The energy channel is ~12% wide, centered at 272 eV. Pitch angle bins...
This data set is composed of 30-second time windows that encompass the early onset waveforms of 50 high SNR earthquakes recorded by a distributed acoustic sensing array in Ridgecrest, CA
This release is essentially the same as 5.19.2, the main difference is that the `distrib` package is now enabled by default for `python-libsbml`. Thanks to Matthias for pointing this out.
[Introduction] Why are we so obsessed with the female body? From high school dress codes to impossible beauty standards in the media, society polices and sexualizes young women's bodies. Nabokov's Lolita, which follows the charming Humbert Humbert and his horrifying relationship with adolescent Lolita, explores this hyperfixation of female bodies, particularly young female bodies. Edgar Allan Poe clearly inspires Nabokov, from the confusing foreward, reminiscent of Poe's novel, The Narrative of Arthur Gordon Pym of...
This thesis contains three parts of work, including oxidant sources on Europa, sulfur chemistry on Venus, and the characterization of Earth-like exoplanets. In the first part, we build two chemical-transport models to study the various oxidant-generation processes that occur in both Europa’s atmosphere and surface ice. The atmospheric model focuses on the role that water plumes play in the formation of Europa’s ionosphere. The simulation results, which show that the ionization reactions are initiated by...
This thesis is dedicated to the study of certain building blocks of scattering amplitudes in (3+1)d Minkowskian spacetime and that of topological field theory in (1+1)d, together with the constraints which result from the properties of these building blocks. The first part of the thesis is concerned with the introduction of an on-shell formalism for massless and massive particles. We identify all possible three-point tensor structures compatible with the little group symmetry and overall mass...
Proteins perform critical roles in a growing list of human-devised applications, and as demands for new applications arise, new proteins must be engineered to meet them. Machine learning-assisted protein engineering (MLPE) has recently arisen as a new philosophy of protein engineering, promising to overcome many of the limitations of existing engineering strategies. Despite its promise, however, as a relatively new approach to protein engineering, MLPE faces many challenges that hinder its routine application. This thesis...
Nonlinear Dynamics and Stability of Viscous Free-Surface Microcapillary Flows in V-Shaped Channels and on Curved SurfacesNicholas C. White
The last two decades have brought a revolution in miniaturization of space technology. Thanks to improved microelectronic sensors and MEMS devices, nanosatellites can perform communication and scientific studies previously limited to large satellites, significantly reducing the financial barriers to space access. But development of a reliable, long-running, small-scale propulsion system for orbital maneuvers remains a key challenge. One solution is the microfluidic electrospray propulsion (MEP) thruster under development at NASA's Jet Propulsion Laboratory (JPL). This...
Motorbikes (Side) dataset. Collected by undergrads at Caltech (Feb '01) from the web. 826 images of motorbikes from the side. JPEG format. ImageData.mat is a MATLAB file containing the variable SubDir_Data which is an 8 x 826 matrix. Each column of this matrix hold the coordinates of the bike within the image, in the form: [x_bot_left y_bot_left x_top_left y_top_left x_top_right y_top_right x_bot_right y_bot_right].
Shapefiles, code, and spreadsheets used in the associated publication.
Releasing the data and analysis and saving on the Caltech Data server
Python code for tracking objects in a video using the CvVidProc library, which speeds up image segmentation by performing computations with OpenCV in C++ and parallelizing computations (thanks to UkoeHB!). While the code can be used to track any objects, it was created for high-speed microscopy of objects in a microfluidic stream traveling upwards of 1 m/s. In such applications where the object speed is much faster than the frame rate, prior knowledge of the...
While the commonly used simple assumptions of sources and structures allows useful first-order approximation of earthquakes, they are increasingly insufficient in characterizing the complex earthquake ruptures and the seismic wave propagations. In this thesis, I present studies that address both the source and structural complexities, as well as their interactions, using flexible parameterizations and ideas. For large earthquakes, I develop a subevent inversion framework to determine their spatiotemporal rupture complexities, and applied it to multiple...
Earth's core-mantle boundary (CMB) is the most extreme interface of the planet's interior. It regulates the flow of heat out of the core and in doing so influences the two internal engines of our dynamic habitable planet: convection in the solid mantle and the magnetic geodynamo in the core. Seismic observations of the CMB have revealed a complex landscape of heterogeneous multi-scale structures that likely play key roles in Earth's internal dynamics and may hold...
High throughput discovery of enhanced visible photoactivity in Fe-Cr vanadate solar fuels photoanodesJohn M Gregoire, Lan Zhou & Dan Guevarra
.zip file containing the data associated with a publication describing high throughput experimentation of Cr-Fe-V oxide photoanodes.
Random circuit simulation, the task of replicating the output of a randomly chosen noiseless quantum computation, has been proposed as a path toward achieving quantum advantage: it is believed to be easy for quantum devices, but hard for classical ones. This thesis scrutinizes both sides of this belief. On the one hand, we investigate whether the task is classically hard—we find that, in certain non-trivial cases, it can actually be easy, complicating a potential general...
A new technique was used to directly measure O3 response to changes in precursor NOx and VOC concentrations in the atmosphere using three identical Teflon “smog chambers” equipped with UV lights. One chamber served as the baseline measurement for O3 formation, one chamber added NOx, and one chamber added surrogate VOCs (ethylene, m-xylene, n-hexane). Comparing the O3 formation between chambers over a three-hour UV cycle provides a direct measurement of O3 sensitivity to precursor concentrations....
The Total Carbon Column Observing Network (TCCON) is a network of ground-based Fourier Transform Spectrometers that record direct solar absorption spectra of the atmosphere in the near-infrared. From these spectra, accurate and precise column-averaged abundances of atmospheric constituents including CO2, CH4, N2O, HF, CO, H2O, and HDO, are retrieved. This is the GGG2020 data release of observations from the TCCON station at Ny-Ålesund, Svalbard, Norway
This release installs a find script for libCombine. Additionally, the binaries have been updated to use the latest version of Expat.
Migrating neural crest cells expressing membrane-YFP at the cardiac level. Transverse view was imaged using confocal microscopy for 8 hours.
Despite decades of research, the accurate and efficient modeling of turbulent flows remains a challenge. However, one promising avenue of research has been the resolvent analysis framework pioneered by McKeon and Sharma (2010) which interprets the nonlinearity of the Navier-Stokes equations (NSE) as an intrinsic forcing to the linear dynamics. This thesis contributes to the advancement of both the linear and nonlinear aspects of resolvent analysis (RA) based modeling of wall bounded turbulent flows. On...
The Effects of Confinement in Active Matter: the Casimir Effect, Partitioning, and Hindered DiffusionCamilla Maria Kjeldbjerg
Active matter describes a class of materials for which constituent "particles" convert chemical energy into mechanical motion leading to self-propulsion (swimming). The origins of this swimming motion for both biological and synthetic constituents is a thriving area of research. However, here we focus on the physical properties and mechanics of the active matter systems. We model active particles using the active Brownian particle (ABP) model that is the simplest model that captures the essential physics,...
California Institute of Technology420
California Institute of Technology, Pasadena, CA (US)26
Jet Propulsion Lab12
Jet Propulsion Laboratory, Pasadena, CA (US)6
Harvard University, Cambridge, MA (US)6
Earth and Space Sciences, University of Washington5
Institute for Geophysics, Jackson School of Geosciences, University of Texas5
Istituto Nazionale di Geofisica e Vulcanologia5