cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Photogenetic Retinal Prosthesis
Creators: name: Grossman, Nir
Publisher: name: Imperial College London
Year: 2010

description: The last few decades have witnessed an immense effort to develop working retinal implants for patients suffering from retinal degeneration diseases such as retinitis pigmentosa. However, it is becoming apparent that this approach is unable to restore levels of vision that will be sufficient to offer significant improvement in the quality of life of patients. Herein, a new type of retinal prosthesis that is based on genetic expression of microbial light sensitive ion channel, Chanelrhodopsin-2 (ChR2), and a remote light stimulation is examined. First, the dynamics of the ChR2 stimulation is characterized and it is shown that (1) the temporal resolution of ChR2-evoked spiking is limited by a continuous drop in its depolarization efficiency that is due to (a) frequency-independent desensitization process and (b) slow photocurrent shutting, which leads to a frequency-dependent post-spike depolarization and (2) the ChR2 response to light can be accurately reproduced by a four-state model consisting of two interconnected branches of open and close states. Then, a stimulation prototype is developed and its functionality is demonstrated in-vitro. The prototype uses a new micro-emissive matrix which enables generating of two-dimensional stimulation patterns with enhanced resolution compared to the conventional retinal implants. Finally, based on the micro-emitters matrix, a new technique for sub-cellular and network-level neuroscience experimentations is shown. The capacity to excite sub-cellular compartments is demonstrated and an example utility to fast map variability in dendrites conductance is shown. The outcomes of this thesis present an outline and a first proof-of-concept for a future photogenetic retinal prosthesis. In addition, they provide the emerging optogenetic technology with a detailed analysis of its temporal resolution and a tool to expand its spatial resolution, which can have immediate high impact applications in modulating the activity of sub-cellular compartments, mapping neuronal networks and studying synchrony and plasticity effects.
Observation of Kekulé vortices induced in graphene by hydrogen adatoms
Creators: name: Guan, Y.
name: Dutreix, C.
name: Gonzales-Herrero, H.
name: Ugeda, M. M.
name: Brihuega, I.
name: Katsnelson, M. I.
name: Yazyev, O. V.
name: Renard, V. T.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Fractional charges are one of the wonders of the fractional quantum Hall effect, a liquid of strongly correlated electrons in a large magnetic field. Fractional excitations are also anticipated in two-dimensional crystals of non-interacting electrons under time-reversal symmetry, as bound states of a rotating bond order known as Kekulé vortex. However, the physical mechanisms inducing such topological defects remain elusive, preventing experimental realisations. Here, we report the observation of Kekulé vortices in the local density of states of graphene under time-reversal symmetry. The vortices result from intervalley scattering on chemisorbed hydrogen adatoms and have a purely electronic origin. Their 2π winding is reminiscent of the Berry phase π of the massless Dirac electrons. Remarkably, we observe that point scatterers with different symmetries such as divacancies can also induce a Kekulé bond order without vortex. Therefore, our local-probe study further confirms point defects as versatile building blocks for the control of graphene's electronic structure by kekulé order.
Harbor Defenses of Los Angeles: A Reference Manual
Creators: name: Berhow, Mark A.
Publisher: name: Fort MacArthur Military Press
Year: 1992
Subjects: Los Angeles Air Force Base
San Pedro, California
California (State / Territory)
World War I
20th Century
World War II
Historic
Military Structure
Harbor Defense
Historic Background Research

description: This manual was prepared to collate the available information the Harbor Defenses of Los Angeles. This manual consists of information and tabulated data on the harbor defenses and a selection of maps which explain the history and physical parts of these defenses.
MOESM1 of Syndecan-4 Signaling Is Required for Exercise-Induced Cardiac Hypertrophy
Creators: name: Xie, Jun
name: He, Guixin
name: Chen, Qinhua
name: Sun, Jiayin
name: Dai, Qin
name: Lu, Jianrong
name: Li, Guannan
name: Wu, Han
name: Li, Ran
name: Chen, Jianzhou
name: Xu, Wei
name: Xu, Biao
Publisher: name: figshare
Year: 2016
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer
subject: Virology

description: Syndecan-4 Signaling Is Required for Exercise-Induced Cardiac Hypertrophy
Efficient continuous wave noise spectroscopy beyond weak coupling
Creators: name: Willick, Kyle
name: Park, Daniel K.
name: Baugh, Jonathan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The optimization of quantum control for physical qubits relies on accurate noise characterization. Probing the spectral density $S(ω)$ of semi-classical phase noise using a spin interacting with a continuous-wave (CW) resonant excitation field has recently gained attention. CW noise spectroscopy protocols have been based on the generalized Bloch equations (GBE) or the filter function formalism, assuming weak coupling to a Markovian bath. However, this standard protocol can substantially underestimate $S(ω)$ at low frequencies when the CW pulse amplitude becomes comparable to $S(ω)$. Here, we derive the coherence decay function more generally by extending it to higher orders in the noise strength and discarding the Markov approximation. Numerical simulations show that this provides a more accurate description of the spin dynamics compared to a simple exponential decay, especially on short timescales. Exploiting these results, we devise a protocol that uses an experiment at a single CW pulse amplitude to extend the spectral range over which $S(ω)$ can be reliably determined to $ω=0$.
description: 10 pages, 6 figures
Oral history interview with Harriet M. Zimmerman, 1977
Publisher: name: Columbia University
Year: 2020
Subjects: Lobbyists
Presidents--Election--1976.--United States
Jews--United States

description: United Jewish Appeal Women's Division; Missions Chairman of American Israel Public Affairs Committee; organizing the Jewish vote; Carter's election campaign, 1976; Jewish issues of 1976
A spin-rotation mechanism of Einstein-de Haas effect based on a ferromagnetic disk
Creators: name: Nie, Xin
name: Li, Jun
name: Datta, Trinanjan
name: Yao, Dao-Xin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Spin-rotation coupling (SRC) is a fundamental phenomenon that connects electronic spins with the rotational motion of a medium. We elucidate the Einstein-de Haas (EdH) effect and its inverse with SRC as the microscopic mechanism using the dynamic spin-lattice equations derived by elasticity theory and Lagrangian formalism. By applying the coupling equations to an iron disk in a magnetic field, we exhibit the transfer of angular momentum and energy between spins and lattice, with or without damping. The timescale of the angular momentum transfer from spins to the entire lattice is estimated by our theory to be on the order of 0.01 ns, for the disk with a radius of 100 nm. Moreover, we discover a linear relationship between the magnetic field strength and the rotation frequency, which is also enhanced by a higher ratio of Young's modulus to Poisson's coefficient. In the presence of damping, we notice that the spin-lattice relaxation time is nearly inversely proportional to the magnetic field. Our explorations will contribute to a better understanding of the EdH effect and provide valuable insights for magneto-mechanical manufacturing.
description: 13 pages,6 figures, published to Frontiers of physics
title: ScanNSing: Music Recognition Sing-Along App
Creators: name: Lee, Teresa
Publisher: name: University of Michigan
Year: 2024
Subjects: subject: mobile app
subject: iOS
subject: music recognition
subject: audio and text synchronization
subject: Engineering

description: Attending football games, other sporting events, or concerts might be stressful for attendees who don't know the lyrics to popular cheers and songs. While the entire stadium sings along, some attendees could feel excluded and awkward as they are unable to blend in with the crowd. Their experience at the event would be elevated if they were able to identify the song played, obtain corresponding lyrics, and sing along with everyone else. To address this problem, our capstone project delivers a mobile app, ScanNSing, that recognizes live music and provides corresponding lyrics in real-time. The music recognition feature not only recognizes snippets of recorded songs, but also cover performances of the songs with slight variations. After the song is identified, the corresponding lyrics would be shown on the screen. The lyrics would be displayed line-by-line, synchronously to the timestamp of the live music being played. With ScanNSing, attendees of live music events would be able to identify and sing along to the songs with just a tap on the app.
Enhanced Gauge Symmetries and K3 Surfaces
Creators: name: Aspinwall, Paul S.
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: String-string duality dictates that type IIA strings compactified on a K3 surface acquire non-abelian gauge groups for certain values of the K3 moduli. We argue that, contrary to expectation, the theories for which such enhanced gauge symmetries appear are not orbifolds in the string sense. For a specific example we show that a theory with enhanced gauge symmetry and an orbifold theory have the same classical K3 surface as a target space but the value of the ``B-field'' differs. This raises the possibility that the conformal field theory associated to a string theory with an enhanced gauge group is badly behaved in some way.
description: 9 pages, LaTeX
Design, assembly and characterisation of peptide-targeted nanoparticles for cancer-specific delivery of DNA and RNA
Creators: name: Wang, Ming
Publisher: name: Imperial College London
Year: 2010

description: Decoration of nanoparticle surfaces with receptor-specific ligands can improve functional drug delivery to cancer cells. Our ligand of interest is a short peptide, U11, sequenced to show high affinity for the Urokinase Plasminogen Activator receptor (uPAR), a receptor overexpressed on the surface of many tumours. We prove that the presentation of the peptide ligand, along with the nature of the liposomal platform, play synergic roles in the exhibition of the nanoparticle’s targeting effect. U11 peptides were loaded onto PEGylated liposomal nanoparticle surfaces by covalent conjugation. In vitro pDNA transfection and uptake studies established the viability of the U11 peptide as a ligand for cancer cell targeting. Circular dichroism and fluorescence spectroscopy methods were used to examine the secondary and tertiary conformations of the surface peptides. siRNA encapsulation assays, nanoparticle turbidity and in vitro gene silencing experiments were used to optimise the targeted nanoparticle for in vivo delivery. In vivo siRNA (luciferase) experiments were performed on mice carrying uPAR-positive (DU145- luc and MDA-MB-231-luc) and uPAR-negative (PC3-luc) cancer xenografts. Biodistribution properties of the nanoparticles were examined by administrating fluorescently-labelled or microRNA-encapsulated nanoparticles. U11-targeted nanoparticles were able to enhance gene delivery (pDNA and siRNA) to uPARpositive cells. Nanoparticle platforms of lower zetapotential reduced non-specific electrostatic interactions with cell membranes, hence allowed enhanced exhibition of the ligand’s targeting effect. Adding further percentages of PEG increased nanoparticle stability, and maximised ligand exposure by forcing the U11-associated PEG chains into a brush conformation. In vivo, U11-nanoparticles indicated enhanced delivery efficacies of siRNA to models bearing small, uPAR-positive tumours. In larger, uPAR-negative xenografts, the accumulation of both targeted and non-targeted nanoparticles (by the enhanced permeation and retention effect) into tumours was equal, and indicated reduced protein expression to the same extent. 24- hours post-administration, accumulation into the liver and the spleen of targeted nanoparticles was higher compared to non-targeted nanoparticles, most likely a result of increased recognition of the nanoparticles by organ-specific macrophages. Without doubt, the introduction of surface ligands can enhance nanoparticle deliver to cancer cells, although careful organisation is required to maximise their effect. Low ligand densities, ligand extension via a PEG spacer, high platform PEGylation and low zetapotentials can aid the maximum exhibition of the ligand’s targeting effect. Such a presentation of surfaceligands can increase nanoparticle interaction with cancer cell receptors, although it can also lead to greater accumulation into the liver and spleen.
Anyon spin and the exotic central extension of the planar Galilei group
Creators: name: Jackiw, R.
name: Nair, V. P.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that the second central extension of the Galilei group in (2+1) dimensions corresponds to spin, which can be any real number.
description: LaTeX (revtex macros), 4 pages, references added
Oral history interview with Harry A. Bruno 1960
Publisher: name: Columbia University
Year: 2019
Subjects: Executives
Air pilots
Aeronautics
Women in aeronautics
Aviation

description: First experiences in glider aviation, 1910; School of Military Aeronautics, University of Toronto; Aeromarine Airways, 1919-23; aviation public relations, 1923; flight safety; Airplane Owners and Pilots Association; women's contribution to world aviation; impressions of Bert Acosta, Wiley Post.
title: Cross-platform Social Media Usage and Behavior
Creators: name: Li, Michelle
Publisher: name: University of Michigan
Year: 2024
Subjects: subject: Social Media
subject: Behavioral Analysis
subject: Data Scraping
subject: Engineering

description: As social media platforms continue to progress and new platforms continue to emerge, it is not uncommon for users to switch between different platforms. This migration of users from one platform to another is interesting to understand various user behaviors including the reasons in which users migrate, the similarities and differences in post content post-migration, and the ways in which different users interact with each other through migration. One of the most recent migration events is the Twitter migration following Elon Musk's acquisition of Twitter in October 2022. This project explores the aftermath of migration by examining users on four platforms: Twitter, Mastodon, Bluesky, and Threads. We are interested in how user behaviors change across platforms as well as the reasons for the change in relation to migration.
The hourglass pattern of women’s representation
Creators: name: Kjaer, Ulrik
name: Kosiara-Pedersen, Karina
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Science Policy

description: Women’s descriptive underrepresentation in parliaments is traditionally presented as the result of a process that discards women as they move up the ladder of recruitment. In this article, the case of Denmark is used to demonstrate an alternative hourglass pattern where women’s presence does decrease in the early phases but increase in the later phases. There are fewer women among party members than among party voters, and fewer women among potential candidates than among party members. However, there is a higher share of women among nominated candidates than among potential candidates, and women are more likely than men to get elected. This hourglass pattern is found at the aggregate level as well as across political party and over time. There are two implications of this finding: (1) the traditional pyramidal pattern cannot be taken for granted, and (2) in countries where women’s representation follows an hourglass shape, scholars and advocates alike should focus on membership recruitment by political parties and on internal party processes that aim to develop party members’ willingness to run for political office prior to the formal nomination process.
Counterflows in viscous electron-hole fluid
Creators: name: Alekseev, P. S.
name: Dmitriev, A. P.
name: Gornyi, I. V.
name: Kachorovskii, V. Yu.
name: Narozhny, B. N.
name: Titov, M.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In ultra-pure conductors, collective motion of charge carriers at relatively high temperatures may become hydrodynamic such that electronic transport may be described similarly to a viscous flow. In confined geometries (e.g., in ultra-high quality nanostructures), the resulting flow is Poiseuille-like. When subjected to a strong external magnetic field, the electric current in semimetals is pushed out of the bulk of the sample towards the edges. Moreover, we show that the interplay between viscosity and fast recombination leads to the appearance of counterflows. The edge currents possess a non-trivial spatial profile and consist of two stripe-like regions: the outer stripe carrying most of the current in the direction of the external electric field and the inner stripe with the counterflow.
description: 10 pages, 5 figures
title: Chassis Design for a Modular, Low-Cost 6-Legged Robot Platform for Dynamics and Control Experiments (FastAnt)
Creators: name: Altman, Dan
Publisher: name: University of Michigan
Year: 2024
Subjects: subject: Multilegged Robotics
subject: Dynamics
subject: Structural Design
subject: Chassis Design Framework
subject: Engineering

description: The BigAnt is a hexapedal robot platform with a 1-DoF leg that is constructed from fiber tape and foam core, which costs less than $20. Despite its low fabrication cost, BigAnt can perform many kinds of gaits and travel on uneven outdoor terrain. Several variations of the BigAnt have been developed for specialized applications, including stair climbing, force sensing and walking on snow fields. Another member of the hexapod family of robot platforms for the study of multilegged locomotion is the power autonomous legged vehicle, RHex. This robot is a power autonomous, compliant-legged robot that has six actuators, one located at each hip. This vehicle was designed by Uluc Saranli, Martin Buehler, and Daniel Koditschek at the University of Michigan in 2001. Mr. Koditschek continues developing iterations of the RHex through the Kod*lab. This project introduces FastAnt, a variation of the BigAnt, with inspiration taken from RHex. FastAnt will be a modular, low-cost 6-legged robot platform for dynamic and control experiments that will exclusively use laser cut ABS, foam core sheets, fiber tape and aluminum strips to minimize materials and fabrication costs. An initial chassis design was started in the past but not completed. This project will showcase a completed chassis design integrated with a drivetrain module with a BigAnt leg connected to it. Each drivetrain module has a planetary gearbox, BLDC motor and integrated motor controller. The design will be manufactured, assembled and tested throughout the assembly process.
One dimensional Bose-Einstein condensate under the effect of the extended uncertainty principle
Creators: name: Benhadjira, Abderrahmane
name: Benkrane, Abdelhakim
name: Bentouila, Omar
name: Benzair, Hadjira
name: Aiadi, Kamal Eddine
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: In this study, an analytical investigation was conducted to assess the effects of the extended uncertainty principle (EUP) on a Bose-Einstein condensate (BEC) described by the deformed one-dimensional Gross-Pitaevskii equation (GPE). Analytical solutions were derived for null potential while we used variational and numerical methods for a harmonic oscillator potential. The effects of EUP on stability, probability density, position, and momentum uncertainties of BEC are analyzed. The EUP is found to be applicable for the free dark soliton solution and in the presence of a harmonic potential within specific ranges of the deformation parameter $α$, while it is not valid for the free bright soliton solution.
Lifschitz Realizability as a Topological Construction
Creators: name: Rathjen, Michael
name: Swan, Andrew
Publisher: name: arXiv
Year: 2018
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 03F50

description: We develop a number of variants of Lifschitz realizability for CZF by building topological models internally in certain realizability models. We use this to show some interesting metamathematical results about constructive set theory with variants of LLPO including consistency with unique Church's thesis, consistency with some Brouwerian principles and variants of the numerical existence property.
Final Integrated Natural Resources Management Plan, Los Angeles Air Force Base, California
Creators: name: Tetra Tech Inc.
Year: 2001
Subjects: Los Angeles Air Force Base
San Pedro, California
Hawthorne, California
El Segundo, California
California (State / Territory)
World War II
Historic
Fort MacArthur Middle Reservation
Military Structure
Integrated Natural Resources Management Plan
Environment Research
Historic Background Research

description: The Integrated Natural Resources Management Plan (INRMP) is a planning document used to manage an installation's natural resources management program. Parts of this plan are integrated with the installation's Cultural Resources Management Plan (ICRMP).
Oral history interview with Harry A. Scott 1974
Publisher: name: Columbia University
Year: 2019
Subjects: Engineers
Manufacturing processes
Paper containers
Research, Industrial

description: Education; employed 1937 by Container Company, acquired by Continental Can in 1942: engineering responsibilities, director of equipment development 1961, assistant general manager for corporate equipment engineering, 1964; technological developments in paper and composite containers; acquiring and constructing other plants; competition, outside consultants.
Additional file 2 of Phylogenomic and comparative analyses of Coffeeae alliance (Rubiaceae): deep insights into phylogenetic relationships and plastome evolution
Creators: name: Amenu, Sara Getachew
name: Wei, Neng
name: Wu, Lei
name: Oyebanji, Oyetola
name: Hu, Guangwan
name: Zhou, Yadong
name: Wang, Qingfeng
Publisher: name: figshare
Year: 2022
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Evolutionary Biology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Cancer

description: Additional file 2. The codon usage bias in all the protein-coding genes of the plastome of the 62 Coffeeae allinces tribes.
Sensory perception in model and pathogenic fungi: Engineering misappropriation of response
Creators: name: Bertuzzi, Margherita
Publisher: name: Imperial College London
Year: 2010

description: The research described characterises pH signalling in the human pathogen Aspergillus fumigatus. Normal functioning of this regulatory system in Aspergillus species requires the integrity of seven genes, including the DNA binding transcription factor PacC, which responds to an alkaline pH signal transmitted by PalA, B, C, F, H and I. Two protein complexes are proposed to sense and transmit the pH signal, the first of which is plasma membrane-localised and composed of two putative pH signal receptors, PalH and PalI, plus a cytoplasmic non-metazoan member of the arrestin family, PalF. Using A. fumigatus transcriptional profiling, Saccharomyces cerevisiae phenotypic screening and the split-ubiquitin MYTH technology, A. fumigatus functions, likely to moderate, or be moderated by the PacC transcription factor, were sought. Two independent A. fumigatus ΔpacC strains have been phenotypically characterised and assessed for virulence in a neutropenic murine model of pulmonary aspergillosis. Of the two, one mutant was further characterised using transcriptional profiling in order to elucidate functions under PacC control during murine infection. The results of this analysis underline the physiological importance of alkaline adaptation during initiation of infection, especially with respect to impacts upon cellular homeostasis, transport and nutrient availability. A S. cerevisiae membrane two-hybrid system has been developed to investigate A. fumigatus plasma membrane protein-protein interactions. Applying the technology, the network of interactions between the components of the A. fumigatus plasma membrane pH signalling complex was explored, and the interaction between the pH-sensing PalH protein and the cytoplasmic arrestin PalF and likely the homodimerisation of PalH were identified. A screen for novel interactors of PalH was also performed, providing 5 candidates for further validation. The S. cerevisiae Δrim101 null mutant and another 80 cation-sensitive null mutants were analysed. An epistacy screen to address the impact of activated Rim101p upon cation sensitivity was performed supporting the identification of putative novel Rim101p/PacC regulators. In parallel the activity of a synthetic Rim101p-regulatable promoter was examined identifying 10 mutants suffering aberrant Rim101p processing and/or transcriptional activity. Finally two A. fumigatus strains have been constructed to functionally express the firefly luciferase gene. Preliminary tests indicate this as a powerful resource to follow murine infection in real time with bioluminescence assays.
title: R5X: Individual Wheel Drive Design and Analysis
Creators: name: Hornby, Nolan
Publisher: name: University of Michigan
Year: 2023
Subjects: subject: MRacing
subject: Geartrain
subject: Epicyclic
subject: FSAE
subject: Engineering

description: MRacing FSAE is a collegiate design team that is tasked with designing, manufacturing, and racing an electric, open-wheel, formula-style race car. For our 2023 vehicle, we have entered the European competitions FSG and FS East; as a result, our team must make significant changes to remain competitive in this new environment. Most notably, in order to remain competitive during acceleration, autocross, and skidpad events, it is essential that our team use an all-wheel-drive platform. Outside of the U.S., the top competitive teams run a form of this system, and allowing them to accelerate much faster and regenerate larger portions of energy. For MR23, this year's vehicle, our team has been able to develop an all-wheel-drive system that meets this need. As a first rendition, however, it fails to meet certain goals that would have improved the system, both in its performance on the track as well as in maintenance/manufacturing. The purpose of this project is to design a complete, well-developed revision of our current all-wheel-drive platform to meet several design targets that were not able to be accomplished in our previous year due to a lack of time, testing data, and experience with this driveline platform.
DC-electric-field-induced and low-frequency electromodulation second-harmonic generation spectroscopy of Si(001)-SiO$_2$ interfaces
Creators: name: Aktsipetrov, O. A.
name: Fedyanin, A. A.
name: Melnikov, A. V.
name: Mishina, E. D.
name: Rubtsov, A. N.
name: Anderson, M. H.
name: Wilson, P. T.
name: ter Beek, M.
name: Hu, X. F.
name: Dadap, J. I.
name: Downer, M. C.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The mechanism of DC-Electric-Field-Induced Second-Harmonic (EFISH) generation at weakly nonlinear buried Si(001)-SiO$_2$ interfaces is studied experimentally in planar Si(001)-SiO$_2$-Cr MOS structures by optical second-harmonic generation (SHG) spectroscopy with a tunable Ti:sapphire femtosecond laser. The spectral dependence of the EFISH contribution near the direct two-photon $E_1$ transition of silicon is extracted. A systematic phenomenological model of the EFISH phenomenon, including a detailed description of the space charge region (SCR) at the semiconductor-dielectric interface in accumulation, depletion, and inversion regimes, has been developed. The influence of surface quantization effects, interface states, charge traps in the oxide layer, doping concentration and oxide thickness on nonlocal screening of the DC-electric field and on breaking of inversion symmetry in the SCR is considered. The model describes EFISH generation in the SCR using a Green function formalism which takes into account all retardation and absorption effects of the fundamental and second harmonic (SH) waves, optical interference between field-dependent and field-independent contributions to the SH field and multiple reflection interference in the SiO$_2$ layer. Good agreement between the phenomenological model and our recent and new EFISH spectroscopic results is demonstrated. Finally, low-frequency electromodulated EFISH is demonstrated as a useful differential spectroscopic technique for studies of the Si-SiO$_2$ interface in silicon-based MOS structures.
description: 31 pages, 14 figures, 1 table, figures are also available at http://kali.ilc.msu.su/articles/50/efish.htm
The Poincaré-Cartan Form in Superfield Theory
Creators: name: Monterde, Juan
name: Muñoz-Masqué, Jaime
name: Vallejo, José Antonio
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 58E30, 46S60, 58A20, 58J70

description: An intrinsic description of the Hamilton-Cartan formalism for first-order Berezinian variational problems determined by a submersion of supermanifolds is given. This is achieved by studying the associated higher-order graded variational problem through the Poincaré-Cartan form. Noether theorem and examples from superfield theory and supermechanics are also discussed.
description: Already published. Placed here for archiving purposes
Additional file 1 of Magnetic resonance imaging-based radiomics signature for preoperative prediction of Ki67 expression in bladder cancer
Creators: name: Zheng, Zongtai
name: Gu, Zhuoran
name: Xu, Feijia
name: Maskey, Niraj
name: He, Yanyan
name: Yan, Yang
name: Xu, Tianyuan
name: Liu, Shenghua
name: Yao, Xudong
Publisher: name: figshare
Year: 2021
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer

description: Additional file 1.
PROTEIN RESIDUE (CIEP) ANALYSIS FOR THE SUNDOG SITE (24LC2289), LEWIS AND CLARK COUNTY, MONTANA
Creators: name: Clark, Caitlin A.
name: Cummings, Linda Scott
Year: 2019
Subjects: Lewis and Clark County (County)
Montana (State / Territory)
Gates of the Mountain Wilderness Area
Late Prehistoric
Late Archaic
Late Paleoindian
PaleoIndian
McKean Complex
Pelican Lake Complex
Archaic
Prehistoric
Sundog Site
24LC2289
Chipped Stone
Protein Residue Analysis
19-091
CIEP Analysis
Data Recovery / Excavation

description: The Sundog Site (24LC2289) represents a prehistoric, short-term occupation and is situated on a large bench near the head of Indian Creek adjacent to the Gates of the Mountains Wilderness Area in Helena National Forest, Lewis and Clark County, Montana. Thirteen lithics recovered from the site were selected and submitted for protein residue analysis to identify animals hunted or processed at the site.
Non-Abelian Axial-Vector Duality: a Geometric Description
Creators: name: Tyurin, Eugene
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We give a geometric characterization of the quasi axial-vector (Kiritsis-Obers) target space duality in the spirit of the bi-algebra (Klimcik-Severa) approach. We show that the sigma-models constructed by taking quotients have non-abelian chiral currents that obey "non-commutative conservation laws" and provide the criterion for a sigma-model to have a dual using the axial-vector procedure.
description: 10 pages, plain LaTeX 2e. The paper (and conclusions) is significantly revised due to a misprint in one of the references. If you read the old version, you SHOULD get this one
title: Understanding the Effects of Wearable-powered Ankle Exoskeletons on Walking Gait Characteristics
Creators: name: Fields, Maria
Publisher: name: University of Michigan
Year: 2024
Subjects: subject: exoskeleton
subject: ergonomics
subject: mobility
subject: Engineering

description: Lower-limb exoskeletons were developed to assist human standing and locomotion. One ongoing challenge with wearing these lower-limb exoskeletons, like ankle exoskeletons, is the cooperation between the exoskeleton support and wearer control. To best support the wearer, further investigation is required to assess the relationship between the wearer and ankle exoskeletons. Human locomotion, like walking, can be studied while a human wears ankle exoskeletons to more clearly define this human-machine interaction. The gait cycle can be broken down into two phases: the stance phase and the swing phase. The time that the foot is on the ground is the �stance,� which makes up 60% of the gait cycle. There are four motions involved in the stance phase: (1) the heel strikes the ground (2) the entire foot comes in contact with the ground (3) the heel lifts and weight is placed on the ball of the foot (4) the big toe gives the propulsion necessary for the lift and swing. The swing phase has two components: (1) acceleration into the swing (2) deceleration for placement of the heel to begin the cycle again [1]. For this project, participants were placed in a virtual dome simulation of an intersection with a signal-controlled marked crosswalk. As a vehicle approached the intersection, participants were tasked with the decision to cross or not cross the street as they walked closer to the intersection. Participants were subject to making this decision under two conditions: wearing a powered ankle exoskeleton on both legs and without wearing the ankle exoskeletons. Force plates on the treadmill collected gait related data that will be used for analysis. The purpose of this project is to understand the effect of wearing an ankle exoskeleton while walking on gait characteristics. I will be analyzing the raw data from participant trials to characterize stride, parse the kinematic data by stride, and visually summarize the effects on ankle, hip, and knee movement. Sources: [1] �Mobility,� Harvard Health, https://www.health.harvard.edu/topics/mobility (accessed Apr. 5, 2024).
Stochastic Degree Sequence Model with Edge Constraints (SDSM-EC) for Backbone Extraction
Creators: name: Neal, Zachary P.
name: Neal, Jennifer Watling
Publisher: name: arXiv
Year: 2023
Subjects: subject: Social and Information Networks (cs.SI)
subject: Other Statistics (stat.OT)
subject: FOS: Computer and information sciences

description: It is common to use the projection of a bipartite network to measure a unipartite network of interest. For example, scientific collaboration networks are often measured using a co-authorship network, which is the projection of a bipartite author-paper network. Caution is required when interpreting the edge weights that appear in such projections. However, backbone models offer a solution by providing a formal statistical method for evaluating when an edge in a projection is statistically significantly strong. In this paper, we propose an extension to the existing Stochastic Degree Sequence Model (SDSM) that allows the null model to include edge constraints (EC) such as prohibited edges. We demonstrate the new SDSM-EC in toy data and empirical data on young children's' play interactions, illustrating how it correctly omits noisy edges from the backbone.
title: Demographic Factors and Over-Voting: How Are They Related?
Creators: name: Wang, AO
Publisher: name: University of Michigan
Year: 2023
Subjects: subject: voting rights
subject: election
subject: enfranchisement
subject: Engineering

description: The sanctity of democratic elections hinges on the accuracy and fairness of the voting process, where everyone's vote is counted as intended. However, over-voting, a phenomenon where voters submit more than the allowed number of votes, poses a significant challenge to this principle. This study seeks to unravel the relationship between demographic factors and the rate of over-voting within the context of San Francisco. Utilizing tract-level demographic data from the U.S. Census Bureau and the count of over-voting incidence from the San Francisco Department of Election, we apply an areal weighting interpolation method and negative binomial regression analysis to probe this association. Preliminary findings reveal that younger (30-44 years old) and less educated (no high school diploma) demographics exhibit a higher propensity for over-voting. These results underscore potential gaps in voter education and the interface of voting technology with varying demographic groups. The study contributes to the body of knowledge on voting behavior and suggests a direction for policy interventions aimed at reducing over-voting incidences. While the findings are geographically confined to San Francisco and subject to limitations inherent in areal weighting and the use of census data for voter demographics estimation, they prompt a vital discussion on the importance of demographic-specific voter assistance.
title: ADCO, Cartulaire de l'abbaye de Saint-Seine (XIIIe siècle), Cart. 165 (10 H 6, ms. 139), 354 pages, f. 0258
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédéric
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2009
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Cartulaire de l'abbaye de Saint-Seine (XIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 165 (10 H 6, ms. 139), 354 pages, f. 0258, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire de l'abbaye de Saint-Seine (XIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 165 (10 H 6, ms. 139), 354 pages, f. 0258, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye de Saint-Seine
description: Provenance: http://www.wikidata.org/entity/Q2820709
On the relationship of gravitational constants in KK reduction
Creators: name: Lu, J. X.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this short note, we try to clarify a seemly trivial but often confusing question in relating a higher-dimensional physical gravitational constant to its lower-dimensional correspondence in Kaluza-Klein reduction. In particular, we re-derive the low-energy M-theory gravitational constant in terms of type IIA string coupling $g_s$ and constant $α'$ through the metric relation between the two theories.
description: Final version published in JHEP
Oral history interview with Harriett Greene 1997
Publisher: name: Columbia University
Year: 2019
Subjects: Research grants

description: Childhood: Bristol, Connecticut; family reminiscences; undergraduate studies, music and mathematics, Smith College, 1942-1944; marriage to Preston Rogers Bassett, Jr., raising family, Bennington, Vermont, Pearl River, New York; early Lamont-Doherty Earth Observatory [LDEO] impressions: general assistant 1956; social atmosphere; director’s administrative assistant, 1958: impressions of director’s office daily operations; organizing shuttle service between LDEO and Columbia University [CU]; Doherty Foundation endowment; founding of Lamont Bulletin; marriage to Dr. E. Maurice Ewing, LDEO director, 1965; gatekeeping to director’s office; LDEO impressions: work, lack of tenure positions, relations with press; reminiscences of Ewing: childhood in Texas, health, social life; Australian trip, 1965; colleague reminiscences, international visitors: effect of guest quarters establishment; LDEO funding: loss of block grants, conflicts with CU, organized fundraising; classified government contracts controversy, late 1960s; Sterling Forest initiative;; departure from LDEO, move to Galveston, Texas; Ewing’s death.
Topological and Nontopological Solitons in a Gauged O(3) Sigma Model with Chern-Simons term
Creators: name: Ghosh, Pijush K.
name: Ghosh, Sanjay K.
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The $O(3)$ nonlinear sigma model with its $U(1)$ subgroup gauged, where the gauge field dynamics is solely governed by a Chern-Simons term, admits both topological as well as nontopological self-dual soliton solutions for a specific choice of the potential. It turns out that the topological solitons are infinitely degenerate in any given sector.
description: Few minor changes have been made. To appear in Phys. Lett. B
The Los Gigantes Community: Post-Chacoan Settlement in the Zuni Region of the American Southwest
Creators: name: Huntley, Deborah
name: Gregson Schachner
Publisher: name: 64th Annual Meeting of the Society for American Archaeology
Year: 1999
Subjects: Zuni
Cibola
El Morro Valley
Pueblo III
Ancestral Puebloan
Log Gigantes
Great House / Big House
Hamlet / Village
Domestic Structures
Kiva / Great Kiva
Room Block / Compound / Pueblo
Domestic Structure or Architectural Complex
Settlements
EMVPP
Data Recovery / Excavation
Systematic Survey

description: Poster presented at the 64th Annual Meeting of the Society for American Archaeology. Chicago, IL.
title: Ann Arbor Campus to Campus Bike Path
Creators: name: Franco Borges, Gabriella
Publisher: name: University of Michigan
Year: 2024
Subjects: subject: construction management
subject: innovation
subject: design
subject: Engineering

description: The City of Ann Arbor has been growing tremendously due to the University of Michigan and other small businesses. The University's hospital has grown a lot over the past few years and has attracted a lot of people from Ypsilanti to commute there every day. The University has also increased the number of students allowed to enroll and therefore need to build more dorms around the city. Because of its increased population and a desire to make the city more walkable and bike friendly, I will recommend the best way to construct a bike path that connects the university's central campuss and north campuss.
Effective Hamiltonian approach to the quantum phase transitions in the extended Jaynes-Cummings model
Creators: name: Cui, H. T.
name: Yan, Y. A.
name: Qin, M.
name: Yi, X. X.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The study of phase transitions in dissipative quantum systems based on the Liouvillian is often hindered by the difficulty of constructing a time-local master equation when the system-environment coupling is strong. To address this issue, the complex discretization approximation for the environment is proposed to study the quantum phase transition in the extended Jaynes-Cumming model with an infinite number of boson modes. This approach yields a non-Hermitian effective Hamiltonian that can be used to simulate the dynamics of the spin. It is found that the ground state of this effective Hamiltonian determines the spin dynamics in the single-excitation subspace. Depending on the opening of the energy gap and the maximum population of excitations on the spin degree of freedom, three distinct phases can be identified: fast decaying, localized, and stretched dynamics of the spin. This approach can be extended to multiple excitations, and similar dynamics were found in the double-excitation subspace, indicating the robustness of the single-excitation phase.
description: 12pages, published version
Swarming in the Dirt: Ordered Flocks with Quenched Disorder
Creators: name: Toner, John
name: Guttenberg, Nicholas
name: Tu, Yuhai
Publisher: name: arXiv
Year: 2018
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The effect of quenched (frozen) disorder on the collective motion of active particles is analyzed. We find that active polar systems are far more robust against quenched disorder than equilibrium ferromagnets. Long ranged order (a non-zero average velocity $\langle{\bf v}\rangle$) persists in the presence of quenched disorder even in spatial dimensions $d=3$; in $d=2$, quasi-long-ranged order (i.e., spatial velocity correlations that decay as a power law with distance) occurs. In equilibrium systems, only quasi-long-ranged order in $d=3$ and short ranged order in $d=2$ are possible. Our theoretical predictions for two dimensions are borne out by simulations.
description: 5 pages, 1 figure. The short paper on flocking with quenched noise