cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Misalignment of Magnetic Fields and Outflows in Protostellar Cores
Creators: name: Hull, Charles L. H.
name: Plambeck, Richard L.
name: Bolatto, Alberto D.
name: Bower, Geoffrey C.
name: Carpenter, John M.
name: Crutcher, Richard M.
name: Fiege, Jason D.
name: Franzmann, Erica
name: Hakobian, Nicholas S.
name: Heiles, Carl
name: Houde, Martin
name: Hughes, A. Meredith
name: Jameson, Katherine
name: Kwon, Woojin
name: Lamb, James W.
name: Looney, Leslie W.
name: Matthews, Brenda C.
name: Mundy, Lee
name: Pillai, Thushara
name: Pound, Marc W.
name: Stephens, Ian W.
name: Tobin, John J.
name: Vaillancourt, John E.
name: Volgenau, N. H.
name: Wright, Melvyn C. H.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present results of 1.3 mm dust polarization observations toward 16 nearby, low-mass protostars, mapped with ~2.5" resolution at CARMA. The results show that magnetic fields in protostellar cores on scales of ~1000 AU are not tightly aligned with outflows from the protostars. Rather, the data are consistent with scenarios where outflows and magnetic fields are preferentially misaligned (perpendicular), or where they are randomly aligned. If one assumes that outflows emerge along the rotation axes of circumstellar disks, and that the outflows have not disrupted the fields in the surrounding material, then our results imply that the disks are not aligned with the fields in the cores from which they formed.
description: 6 pages, 2 figures, 1 table
Regeneration protocol - Drosophila
Creators: name: Goentoro, Lea A.
Publisher: name: CaltechDATA
Year: 2023
Subjects: Regeneration Biology

description: This protocol details the step-by-step procedure to amputate adult fly limb; administer leucine, glutamine, and insulin to the fly; and assess regenerative response in the limb. This protocol was used in Abrams et al., 2021 (doi.org/10.1101/2020.11.21.392720).
Dairy Member Frustration and Solidarity Difficulties: A Qualitative Analysis
Creators: name: Gray, Thomas W.
name: Gray, Thomas W.
Publisher: name: Unknown
Year: 1996
Subjects: subject: Agribusiness
subject: Institutional and Behavioral Economics
subject: Livestock Production/Industries
subject: Research Methods/ Statistical Methods
subject: Cooperatives
subject: dairy members
subject: frustration
subject: solidarity

description: This is a qualitative analysis of 2,000 written comments by members of two dairy cooperatives. Nearly all comments expressed levels of frustration and/or discontent. The report provides synthesized abstracts of comments. These abstracts are interpreted using a modified social work "life model" of analysis. Frustration and problematic solidarity (cleavages) within the organization are understood functions of: maladaptive transactions—breakdowns in communications, changing and inconsistent expectations, perceived exploitive relationships—as well as general unresponsiveness to meet specific member needs within the organization, and the larger environment. Recommendations are drawn from the analysis and from specific member comments.
Transient response of a multi-frequency reed gage
Creators: name: Shapiro, Henry
Publisher: name: California Institute of Technology
Year: 1952
Subjects: subject: Mechanical Engineering
subject: FOS: Mechanical engineering

description: The purpose of this thesis is to extend the usefulness of a multifrequency reed gage, a simple mechanical instrument, which records essential features of transient motions.  This instrument, which can be considered a dynamic model of a multiple degree of freedom structure, consists of e set of one degree of freedom cantilever beams having various frequencies. The information from the instrument consists of the maximum positive and negative displacement, of each beam. It is desired to obtain as many features as possible about the exciting motion from this information alone.

The instrument response is obtained analytically for various exciting pulses. Both symmetrical pulses and non-symmetrical pulses with rise time to decay time ratios from zero to infinity are considered. The impulsive response is considered separately.

From a study of these responses a correlation is made between the response and the excitation. Table #5, page 32, summarizes the information about these studies and indicates the methods for obtaining, maximum information from the reed gage.
On the metric entropy of the Banach-Mazur compactum
Creators: name: Pisier, Gilles
Publisher: name: arXiv
Year: 2013
Subjects: subject: Functional Analysis (math.FA)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics

description: We study the metric entropy of the metric space $B_n$ of all n-dimensional Banach spaces (the so-called Banach-Mazur compactum) equipped with the Banach-Mazur (multiplicative) "distance" $d$. We are interested either in estimates independent of the dimension or in asymptotic estimates when the dimension tends to $\infty$. For instance, we prove that, if $N({B_n},d, 1+\varepsilon)$ is the smallest number of "balls" of "radius" $1+\varepsilon$ that cover $ B_n$, then for any $\varepsilon>0$ we have $$0
description: The role of quantum expanders is better highlighted in version 3. In v. 4 the matricial case is now proved without restriction on $r>1$ just like in the Banach space case. In v. 6, some references and comments are added, we show that the metric entropy of an arbitrary ball behaves also doubly exponentially, just like for the whole space of n-dimensional spaces. To appear in Mathematika
Exploring wind-driving dust species in cool luminous giants II. Constraints from photometry of M-type AGB stars
Creators: name: Bladh, Sara
name: Höfner, Susanne
name: Nowotny, Walter
name: Aringer, Bernhard
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The heavy mass loss observed in evolved asymptotic giant branch (AGB) stars is usually attributed to a two-stage process: atmospheric levitation by pulsation-induced shock waves, followed by radiative acceleration of newly formed dust grains. The dust transfers momentum to the surrounding gas through collisions and thereby triggers a general outflow. Radiation-hydrodynamical models of M-type AGB stars suggest that these winds can be driven by photon scattering -- in contrast to absorption -- on Fe-free silicate grains of sizes 0.1--1\,$μ$m. In this paper we study photometric constraints for wind-driving dust species in M-type AGB stars, as part of an ongoing effort to identify likely candidates among the grain materials observed in circumstellar envelopes. To investigate the scenario of stellar winds driven by photon scattering on dust, and to explore how different optical and chemical properties of wind-driving dust species affect photometry we focus on two sets of dynamical models atmospheres: (i) models using a detailed description for the growth of Mg$_2$SiO$_4$ grains, taking into account both scattering and absorption cross-sections when calculating the radiative acceleration, and (ii) models using a parameterized dust description, constructed to represent different chemical and optical dust properties. By comparing synthetic photometry from these two sets of models to observations of M-type AGB stars we can provide constraints on the properties of wind-driving dust species. Photometry from wind models with a detailed description for the growth of Mg$_2$SiO$_4$ grains reproduces well both the values and the time-dependent behavior of observations of M-type AGB stars, providing further support for the scenario of winds driven by photon scattering on dust.
description: Accepted for publication in A&A. 15 pages, 14 figures
Genetta johnstoni Pocock 1908
Creators: name: W. Christopher Wozencraft
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Carnivora
Viverridae
Genetta
Genetta johnstoni

description: Genetta johnstoni Pocock, 1908. Proc. Zool. Soc. Lond., 1907:1041 [1908]. TYPE LOCALITY: "in a district from fifteen to twenty miles west of the Putu Mountains, which lie west of the Duobe and Cavally Rivers". [Liberia] DISTRIBUTION: Ghana, Guinea, Ivory Coast, Liberia. STATUS: IUCN - Insufficiently known. SYNONYMS: lehmanni Kuhn, 1960. COMMENTS: Subgenus Paragenetta.
description: Published as part of W. Christopher Wozencraft, 1993, Order Carnivora, pp. 279-348 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 346, DOI: 10.5281/zenodo.7359191
description: {"references": ["Kuhn, H. - J. 1960. Genetta (Paragenetta) lehmanni, eine neue Schleichkatze aus Liberia. Saugetierkundliche Mitteilungen, 8: 154 - 160."]}
Strategies for Survival by Cooperative Country Elevators - Revisited
Creators: name: Warman, Marc
name: Sterns, Larry
name: Cobia, David W.
name: Warman, Marc
name: Sterns, Larry
name: Cobia, David W.
Publisher: name: Unknown
Year: 1997
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Labor and Human Capital
subject: Marketing
subject: FOS: Economics and business
subject: Farmer cooperatives
subject: grain
subject: marketing
subject: structure
subject: operations
subject: Government policy

description: The structure and operations of local cooperative elevators were affected by excess storage capacity, modifications in Government programs, and other factors during the late 1980s and early 1990s. While the reduction in Government storage payments had the greatest impact on elevator operations, other programs such as Payment-In-Kind (PIK), Government grain sales (Commodity Credit Corporation (CCC) catalog and auction sales), and Conservation Reserve Program (CRP) also affected cooperative elevator activities. In 1988 and 1992, 71 cooperative managers were asked to rank a number of factors that affected cooperative operations and management strategies used as a practical response. This report presents these rankings and analyzes management strategies implemented between 1988 and 1992 and their degree of success.
Genetta servalina Pucheran 1855
Creators: name: W. Christopher Wozencraft
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Carnivora
Viverridae
Genetta
Genetta servalina

description: Genetta servalina Pucheran, 1855. Rev. Mag. Zool. Paris, 7(2):154. TYPE LOCALITY: " Gabon ". DISTRIBUTION: Cameroon, Central African Republic, Congo, Equatorial Guinea, Gabon, Kenya, Niger, Tanzania, Uganda, Zaire. SYNONYMS: aubryana Pucheran, 1855; bettoni Thomas, 1902; cristata Hayman, 1940; intensa Lönnberg, 1917. COMMENTS: Includes cristata, bettoni, and aubryana, but not bini, which is here considered a junior synonym of maculata; see Crawford-Cabral (1970:323), Wenzel and Haltenorth (1972), Coetzee (1977b), and Schlawe (1981); but also see Rosevear (1974) and Crawford-Cabral (1981), who recognized cristata as a separate species.
description: Published as part of W. Christopher Wozencraft, 1993, Order Carnivora, pp. 279-348 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 346, DOI: 10.5281/zenodo.7359191
description: {"references": ["Crawford-Cabral, J. 1970. As genetas da Africa central (Republica do Zaire, Ruanda e Burrindi). Boletim do Instituto de Investigacao Cientifica de Angola, 7 (2): 3 - 23.", "Wenzel, E., and T. Haltenorth. 1972. System der Schleichkatzen (Viverridae). Saugetierkundliche Mitteilungen, 20 (1 - 2): 110 - 127.", "Coetzee, C. G. 1977 b. Order Carnivora. Part 8. Pp. 1 - 42, in The mammals of Africa: An identification manual (J. Meester and H. W. Setzer, eds.) [issued 22 Aug 1977]. Smithsonian Institution Press, Washington, D. C., not continuously paginated.", "Schlawe, L. 1981. Material, Fundort, Text- und Bildquellen als Grundlagen fur eine Artenliste zur Revision der Gattung Genetta G. Cuvier, 1816 (Mammalia, Carnivora, Viverridae). Zoologische Abhandlungen Staatliches Museum fur Tierkunde in Dresden, 37 (4): 85 - 182.", "Rosevear, D. R. 1974. The carnivores of West Africa. Trustees of the British Museum (Natural History), London, 723: 1 - 548."]}
A comprehensive picture of baryons in groups and clusters of galaxies
Creators: name: Lagana, T. F.
name: Martinet, N.
name: Durret, F.
name: Neto, G. B. Lima
name: Maughan, B.
name: Zhang, Y. -Y.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: (Abridged) Based on XMM-Newton, Chandra and SDSS data, we investigate the baryon distribution in groups and clusters and its use as a cosmological constraint. For this, we considered a sample of 123 systems, with total masses in the mass range M500 = ~ 10^13 - 4 x 10^15 h_70^-1 Msun. The gas masses and total masses are derived from X-ray data under the assumption of hydrostatic equilibrium and spherical symmetry. The stellar masses are based on SDSS-DR8 data. For the 37 systems out of 123 that had both optical and X-ray data available, we investigated the gas, stellar and total baryon mass fractions inside r2500 and r500, and the differential gas mass fraction within the spherical annulus between r2500 and r500, as a function of total mass. For the other objects, we investigated the gas mass fraction only. We find that the gas mass fraction inside r2500 and r500 depends on the total mass. However, the differential gas mass fraction does not show any dependence on total mass for systems with M500 > 10^14 Msun. We find that the total baryonic content increases with cluster mass. This led us to investigate the contribution of the ICL to the total baryon budget for lower mass systems, but we find that it cannot account for the difference observed. The gas mass fraction dependence on total mass observed for groups and clusters could be due to the difficulty of low-mass systems to retain gas inside the inner region. Due to their shallower potential well, non-thermal processes are more effective in expelling the gas from their central regions outwards. Since the differential gas mass fraction is nearly constant it provides better constraints for cosmology. Using our total f_b estimates, our results imply 0.17 < Omega_m < 0.55.
description: Accepted for publication in A&A; 16 pages, 9 figures, 1 table
Gas generation by chemical reaction for pressurizing liquid rocket propellants
Creators: name: Bowie, James Monfort
name: Huestis, Gerald Stephen
Publisher: name: California Institute of Technology
Year: 1947
Subjects: Aeronautical Engineering
Aeronautics

description: This report is devoted to presenting the results of an investigation directed toward the design of a chemical gas generation system for the Wac Corporal.  In this case the function of gas generation is to provide the necessary pressure to inject the propellants into the rocket motor.

The investigation indicates that gas can be generated in the main acid tank of the, Wac by injection of a controlled amount of aniline to react with the acid. This aniline is injected at the bottom of the acid tank, and is supplied from a small pressure cell contained integrally with the injector and aniline flow regulator. Tests show that this system is able to regulate the flow of aniline into the acid tank to maintain a pressure on the propellants with ±20 psi. of the desired value.

A proposed package unit for installation on the Wac Corporal is shown in Fig 1.  This unit contains all the parts necessary for the gas generation function, and its installed weight including the aniline, is estimated to be eight lbs.

The importance of the installation of such a unit on the Wac is seen when it is realized that the total weight of the gas generation system, including the acid used, will be approximately 25 lbs.  This system will replace the 90 lb. air pressurization unit now being used to pressurize the propellants and it will represent a 65 lb. reduction in initial gross weight.  Such a weight reduction will lead to greatly improved rocket performance.

This report does not attempt to determine the range of gross weights, over which gas generation systems will prove superior to other methods of propellant pressurization.  It is felt, however, that a definite upper and lower limit on missile gross weight does exist for which gas generation will be applicable.

The Wac Corporal is a sounding rocket of 590 lbs. gross weight using red fuming nitric acid and aniline as propellants.  It was designed at the California Institute of Technology Jet Propulsion Laboratory.
The one-dimensional Ly-alpha forest power spectrum from BOSS
Creators: name: Palanque-Delabrouille, Nathalie
name: Yèche, Christophe
name: Borde, Arnaud
name: Goff, Jean-Marc Le
name: Rossi, Graziano
name: Viel, Matteo
name: Aubourg, Éric
name: Bailey, Stephen
name: Bautista, Julian
name: Blomqvist, Michael
name: Bolton, Adam
name: Bolton, James S.
name: Busca, Nicolás G.
name: Carithers, Bill
name: Croft, Rupert A. C.
name: Dawson, Kyle S.
name: Delubac, Timothée
name: Font-Ribera, Andreu
name: Ho, Shirley
name: Kirkby, David
name: Lee, Khee-Gan
name: Margala, Daniel
name: Miralda-Escudé, Jordi
name: Muna, Demitri
name: Myers, Adam D.
name: Noterdaeme, Pasquier
name: Pâris, Isabelle
name: Petitjean, Patrick
name: Pieri, Matthew M.
name: Rich, James
name: Rollinde, Emmanuel
name: Ross, Nicholas P.
name: Schlegel, David J.
name: Schneider, Donald P.
name: Slosar, Anže
name: Weinberg, David H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We have developed two independent methods to measure the one-dimensional power spectrum of the transmitted flux in the Lyman-$α$ forest. The first method is based on a Fourier transform, and the second on a maximum likelihood estimator. The two methods are independent and have different systematic uncertainties. The determination of the noise level in the data spectra was subject to a novel treatment, because of its significant impact on the derived power spectrum. We applied the two methods to 13,821 quasar spectra from SDSS-III/BOSS DR9 selected from a larger sample of over 60,000 spectra on the basis of their high quality, large signal-to-noise ratio, and good spectral resolution. The power spectra measured using either approach are in good agreement over all twelve redshift bins from $ = 2.2$ to $ = 4.4$, and scales from 0.001 $\rm(km/s)^{-1}$ to $0.02 \rm(km/s)^{-1}$. We determine the methodological and instrumental systematic uncertainties of our measurements. We provide a preliminary cosmological interpretation of our measurements using available hydrodynamical simulations. The improvement in precision over previously published results from SDSS is a factor 2--3 for constraints on relevant cosmological parameters. For a $Λ$CDM model and using a constraint on $H_0$ that encompasses measurements based on the local distance ladder and on CMB anisotropies, we infer $σ_8 =0.83\pm0.03$ and $n_s= 0.97\pm0.02$ based on \ion{H}{i} absorption in the range $2.1
description: 21 pages, 26 figures, tables available online at http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/559/A85
Lagrangian Models of the Dispersion of Airborne Chemically Reacting Contaminants
Creators: name: Lai, Fang Shyong
Publisher: name: California Institute of Technology
Year: 1971
Subjects: subject: Chemical Engineering
subject: FOS: Chemical engineering

description: The present work attempts to obtain a mathematical model for generation and dispersion of photochemical smog. A simplified kinetic model which is proposed by Friedlander and Seinfeld (1969), is presented for the photochemical smog reactions. To take into account the effect of atmospheric mixing processes on the chemical reactions, the Lagrangian similarity hypothesis for the diffusion of non-reactive components is extended to reacting species. The concept of a variable volume batch reactor model (VVBR) is applied in the study of the formation of photochemical smog. The critical value, [h/bu*]cr. where h is the source height, b constant and u* friction velocity, for the onset of photochemical smog is found.

Calculations based on the simplified kinetic model and the applications of the Lagrangian similarity hypothesis are given for a nonlinear, second order chemical reaction. Finally, determination of the probability density function of the pollutant is given for the non-reacting case.
Effect of small variations of parameters in the turboprop cycle
Creators: name: Holmquist, Carl O.
Publisher: name: California Institute of Technology
Year: 1951
Subjects: Aeronautics

description: A cycle analysis of the turbine-propeller engine is given in terms of the parameters of the cycle and the component efficiencies of the engine with and without regeneration.  By means of a Taylor expansion about the point of ideal efficiencies, total power output, specific fuel consumption, and optimum jet pressure ratio are given in terms of the ideal values plus corrections for small variations in the component efficiencies from 100%. In this way, the relative importance of component efficiencies in affecting the performance of the ideal turboprop cycle is demonstrated by means of simple analytical expressions involving the basic cycle parameters and the component efficiencies.

The analysis of the ideal turboprop cycles is given in terms of three basic parameters which are functions of the forward flight speed, the compressor pressure ratio, and the limiting combustion chamber temperature.  For the ideal cycle, the jet pressure ratio for optimum division of power between propeller and jet results in the total work of the cycle being done by the propeller.

Of the component efficiencies, the turbine efficiency was found to be the most important in affecting the performance criteria of the ideal turboprop cycle.  Since all work is done by the propeller in the ideal cycle, the propeller efficiency was also found to be important in affecting performance.  Regeneration, as considered in this analysis, decreased the total power output and decreased the specific fuel consumption of the ideal turbine-propeller engine.
Detectors for probing relativistic quantum physics beyond perturbation theory
Creators: name: Brown, Eric G.
name: Martin-Martinez, Eduardo
name: Menicucci, Nicolas C.
name: Mann, Robert B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We develop a general formalism for a non-perturbative treatment of harmonic-oscillator particle detectors in relativistic quantum field theory using continuous-variables techniques. By means of this we forgo perturbation theory altogether and reduce the complete dynamics to a readily solvable set of first-order, linear differential equations. The formalism applies unchanged to a wide variety of physical setups, including arbitrary detector trajectories, any number of detectors, arbitrary time-dependent quadratic couplings, arbitrary Gaussian initial states, and a variety of background spacetimes. As a first set of concrete results, we prove non-perturbatively--and without invoking Bogoliubov transformations--that an accelerated detector in a cavity evolves to a state that is very nearly thermal with a temperature proportional to its acceleration, allowing us to discuss the universality of the Unruh effect. Additionally we quantitatively analyze the problems of considering single-mode approximations in cavity field theory and show the emergence of causal behaviour when we include a sufficiently large number of field modes in the analysis. Finally, we analyze how the harmonic particle detector can harvest entanglement from the vacuum. We also study the effect of noise in time dependent problems introduced by suddenly switching on the interaction versus ramping it up slowly (adiabatic activation).
description: v2: Updated bibliography to add Arxiv reference of citation to unpublished work. v3: Added Journal reference and minor updates to match published version. 19 pages, 5 figures, revtex 4.1
Contemporary Producer-Owned Lamb Processing Ventures: Lessons Learned
Creators: name: Smith, Roland D.
name: Smith, Edward G.
name: Davis, Ernest E.
name: Edwards, Richard A.
name: Molina, Gustavo
name: Smith, Roland D.
name: Smith, Edward G.
name: Davis, Ernest E.
name: Edwards, Richard A.
name: Molina, Gustavo
Publisher: name: Unknown
Year: 1999
Subjects: subject: Agribusiness
subject: Financial Economics
subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: Lamb marketing
subject: processing
subject: cooperatives
subject: case study approach
subject: vertical integration

description: The U.S. sheep and goat industry is in transition. Its producers have been forced to adjust to a more market-oriented environment with less Government income support, more international competition, and increased market concentration beyond the producer level. In trying to realize higher returns for the lamb production enterprise in the early 1990s many lamb producers became involved in group projects that had value-added processing and marketing through vertical integration as the primary way to capture more of the consumers’ food dollar. Most were unsuccessful. Spokespersons for the U.S. sheep and goat industry, while not being critical of the unsuccessful ventures, believed that lessons learned from these business failures could greatly benefit future vertical coordination efforts in the lamb processing and marketing arena. A case study approach was used to evaluate two producer-owned ventures--American Lamb Producers, Inc. and Virginia Lamb Cooperative. Findings from these case studies have relevance in determining the potential for future producer-owned ventures into value-added lamb processing and marketing in an industry characterized by significant concentration among a few established marketing firms.
DYRK1A-Related Trabecular Defects in Male Ts65Dn Mice Emerge During a Critical Developmental Window
Creators: name: LaCombe, Jonathan M.
Publisher: name: IUPUI ScholarWorks
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Skeletal Development
subject: Gene Dosage
subject: Down syndrome
subject: Dyrk1a

description: Indiana University-Purdue University Indianapolis (IUPUI)
description: Down syndrome (DS) is a complex genetic disorder caused by the triplication of human chromosome 21 (Hsa21). The presence of an extra copy of an entire chromosome greatly disrupts the copy number and expression of over 350 protein coding genes. This gene dosage imbalance has far-reaching effects on normal development and aging, leading to cognitive and skeletal defects that emerge earlier in life than the general population. The present study begins by characterizing skeletal development in young male Ts65Dn mice to test the hypothesis that skeletal defects in male Ts65Dn mice are developmental in nature.Femurs from young mice ranging from postnatal day 12- to 42-days of age (P12-42) were measured and analyzed by microcomputed tomography (μCT). Cortical defects were present generally throughout development, but trabecular defects emerged at P30 and persisted until P42. The gene Dual-specificity tyrosine-regulated kinase 1a (Dyrk1a) is triplicated in both DS and in Ts65Dn mice and has been implicated as a putative cause of both cognitive and skeletal defects. To test the hypothesis that trisomic Dyrk1a is related to the emergence of trabecular defects at P30, expression of Dyrk1a in the femurs of male Ts65Dn mice was quantified by qPCR. Expression was shown to fluctuate throughout development and overexpression generally aligned with the emergence of trabecular defects at P30. The growth rate in trabecular measures between male Ts65Dn and euploid littermates was similar between P30 and P42, suggesting a closer look into cellular mechanisms at P42. Assessment of proliferation of BMSCs, differentiation and activity of osteoblasts showed no significant differences between Ts65Dn and euploid cellular activity, suggesting that the cellular microenvironment has a greater influence on cellular activity than genetic background. These data led to the hypothesis that reduction of Dyrk1a gene expression and pharmacological inhibition of DYRK1A could be executed during a critical period to prevent the emergence of trabecular defects at P30. To tests this hypothesis, doxycycline-induced cre-lox recombination to reduce Dyrk1a gene copy number or the DYRK1A inhibitor CX-4945 began at P21. The results of both genetic and pharmacological interventions suggest that trisomic Dyrk1a does not influence the emergence of trabecular defects up to P30. Instead, data suggest that the critical window for the rescue of trabecular defects lies between P30 and P42.
Unified Tertiary and Secondary Creep Modeling of Additively Manufactured Nickel-Based Superalloys
Creators: name: Dhamade, Harshal Ghanshyam
Publisher: name: IUPUI ScholarWorks
Year: 2021
Subjects: Creep Modeling
Additive Manufacturing
Nickel-Based Superalloys
Finite Element Analysis (FEA)
Continuum Damage Mechanics (CDM)
User Subroutine
Metal 3D Printing

description: Indiana University-Purdue University Indianapolis (IUPUI)
description: Additively manufactured (AM) metals have been increasingly fabricated for structural applications. However, a major hurdle preventing their extensive application is lack of understanding of their mechanical properties. To address this issue, the objective of this research is to develop a computational model to simulate the creep behavior of nickel alloy 718 manufactured using the laser powder bed fusion (L-PBF) additive manufacturing process. A finite element (FE) model with a subroutine is created for simulating the creep mechanism for 3D printed nickel alloy 718 components. A continuum damage mechanics (CDM) approach is employed by implementing a user defined subroutine formulated to accurately capture the creep mechanisms. Using a calibration code, the material constants are determined. The secondary creep and damage constants are derived using the parameter fitting on the experimental data found in literature. The developed FE model is capable to predict the creep deformation, damage evolution, and creep-rupture life. Creep damage and rupture is simulated as defined by the CDM theory. The predicted results from the CDM model compare well with experimental data, which are collected from literature for L-PBF manufactured nickel alloy 718 of creep deformation and creep rupture, at different levels of temperature and stress. Using the multi-regime Liu-Murakami (L-M) and Kachanov-Rabotnov (K-R) isotropic creep damage formulation, creep deformation and rupture tests of both the secondary and tertiary creep behaviors are modeled. A single element FE model is used to validate the model constants. The model shows good agreement with the traditionally wrought manufactured 316 stainless steel and nickel alloy 718 experimental data collected from the literature. Moreover, a full-scale axisymmetric FE model is used to simulate the creep test and the capacity of the model to predict necking, creep damage, and creep-rupture life for L-PBF manufactured nickel alloy 718. The model predictions are then compared to the experimental creep data, with satisfactory agreement. In summary, the model developed in this work can reliably predict the creep behavior for 3D printed metals under uniaxial tensile and high temperature conditions.
Quantum ergodicity on large regular graphs
Creators: name: Anantharaman, Nalini
name: Masson, Etienne Le
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: Spectral Theory (math.SP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We propose a version of the Quantum Ergodicity theorem on large regular graphs of fixed valency. This is a property of delocalization of "most" eigenfunctions. We consider expander graphs with few short cycles (for instance random large regular graphs). Our method mimics the proof of Quantum Ergodicity on manifolds: it uses microlocal analysis on regular trees.
description: Statement of theorem 1.7 has been corrected. Some comments, remarks and references added. 30 pages
Genetta thierryi Matschie 1902
Creators: name: W. Christopher Wozencraft
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Carnivora
Viverridae
Genetta
Genetta thierryi

description: Genetta thierryi Matschie, 1902. Verh. V. Internat. Zool. Congr., 1901: 1142. TYPE LOCALITY: "Hinterland von Togo von 9° n. Br. ab", restricted to "Borogu = Borgou, (10.78 N., 0.65 E)?" by Schlawe (1981: 159). DISTRIBUTION: Benin, Burkina Faso, Cameroon, Gambia, Ghana, Ivory Coast, Mali, Nigeria, Niger, Sierra Leone, Senegal, Togo. SYNONYMS: villersi Dekeyser, 1949. COMMENTS: Subgenus Pseudogenetta. Includes Pseudogenetta villiersi, see Kuhn (1960), Crawford-Cabral (1969, 1981), Rosevear (1974), and Schlawe (1981).
description: Published as part of W. Christopher Wozencraft, 1993, Order Carnivora, pp. 279-348 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 346, DOI: 10.5281/zenodo.7359191
description: {"references": ["Schlawe, L. 1981. Material, Fundort, Text- und Bildquellen als Grundlagen fur eine Artenliste zur Revision der Gattung Genetta G. Cuvier, 1816 (Mammalia, Carnivora, Viverridae). Zoologische Abhandlungen Staatliches Museum fur Tierkunde in Dresden, 37 (4): 85 - 182.", "Kuhn, H. - J. 1960. Genetta (Paragenetta) lehmanni, eine neue Schleichkatze aus Liberia. Saugetierkundliche Mitteilungen, 8: 154 - 160.", "Crawford-Cabral, J. 1969. As genetas de Angola. Boletim do Instituto de Investigacao Cientifica de Angola, 6 (1): 3 - 33.", "Rosevear, D. R. 1974. The carnivores of West Africa. Trustees of the British Museum (Natural History), London, 723: 1 - 548."]}
Explaining the Sr and Ba Scatter in Extremely Metal-Poor Stars
Creators: name: Aoki, Wako
name: Suda, Takuma
name: Boyd, Richard
name: Kajino, Toshitaka
name: Famiano, Michael
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Compilations of abundances of Strontium and Barium in extremely metal-poor stars show that an apparent cutoff is observed for [Sr/Ba] at [Fe/H]$$-3.6 with a clear upper bound depending on metallicity. We study the factors that place upper limits on the logarithmic ratio [Sr/Ba]. A model is developed in which the collapses of type II supernovae are found to reproduce many of the features seen in the data. This model is consistent with galactic chemical evolution constraints of light-element enrichment in metal-poor stars. Effects of turbulence in an explosive site have also been simulated, and are found to be important in explaining the large scatter observed in the [Sr/Ba] data.
Efficient Edge Intelligence In the Era of Big Data
Creators: name: Wong, Jun Hua
Publisher: name: IUPUI ScholarWorks
Year: 2021
Subjects: Smart wearables
Artificial Intelligence
Deep learning
Convolutional Autoencoders
Convolutional Neural Networks

description: Indiana University-Purdue University Indianapolis (IUPUI)
description: Smart wearables, known as emerging paradigms for vital big data capturing, have been attracting intensive attentions. However, one crucial problem is their power-hungriness, i.e., the continuous data streaming consumes energy dramatically and requires devices to be frequently charged. Targeting this obstacle, we propose to investigate the biodynamic patterns in the data and design a data-driven approach for intelligent data compression. We leverage Deep Learning (DL), more specifically, Convolutional Autoencoder (CAE), to learn a sparse representation of the vital big data. The minimized energy need, even taking into consideration the CAE-induced overhead, is tremendously lower than the original energy need. Further, compared with state-of-the-art wavelet compression-based method, our method can compress the data with a dramatically lower error for a similar energy budget. Our experiments and the validated approach are expected to boost the energy efficiency of wearables, and thus greatly advance ubiquitous big data applications in era of smart health. In recent years, there has also been a growing interest in edge intelligence for emerging instantaneous big data inference. However, the inference algorithms, especially deep learning, usually require heavy computation requirements, thereby greatly limiting their deployment on the edge. We take special interest in the smart health wearable big data mining and inference. Targeting the deep learning’s high computational complexity and large memory and energy requirements, new approaches are urged to make the deep learning algorithms ultra-efficient for wearable big data analysis. We propose to leverage knowledge distillation to achieve an ultra-efficient edge-deployable deep learning model. More specifically, through transferring the knowledge from a teacher model to the on-edge student model, the soft target distribution of the teacher model can be effectively learned by the student model. Besides, we propose to further introduce adversarial robustness to the student model, by stimulating the student model to correctly identify inputs that have adversarial perturbation. Experiments demonstrate that the knowledge distillation student model has comparable performance to the heavy teacher model but owns a substantially smaller model size. With adversarial learning, the student model has effectively preserved its robustness. In such a way, we have demonstrated the framework with knowledge distillation and adversarial learning can, not only advance ultra-efficient edge inference, but also preserve the robustness facing the perturbed input.
In-Gap Quasiparticle Excitations Induced by Non-Magnetic Cu Impurities in Na(Fe0.96Co0.03Cu0.01)As Revealed by Scanning Tunneling Spectroscopy
Creators: name: Yang, Huan
name: Wang, Zhenyu
name: Fang, Delong
name: Deng, Qiang
name: Wang, Qiang-Hua
name: Xiang, Yuan-Yuan
name: Yang, Yang
name: Wen, Hai-Hu
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The pairing mechanism in the iron pnictides remains unresolved yet. One of the central issues is the structure of the superconducting order parameter which classifies the community into two different and highly disputed camps. On one hand the picture of pairing based on the magnetic origin predicts a sign reversal gap on the electron and hole Fermi pockets, leading to the S+- pairing. On the other hand, a more conventional S++ pairing gap was suggested based on the phonon or orbital fluctuation mediated pairing. In the superconducting state, the impurities may generate a unique pattern of local density of states in space and energy, which are regarded as the fingerprints for checking the structure of the pairing gap. In this study, we successfully identified the non-magnetic and magnetic impurities in Na(Fe0.97-xCo0.03Tx)As (T=Cu, Mn) and investigated the spatial resolved scanning tunneling spectroscopy. We present clear evidence of the in-gap quasiparticle states induced by the nonmagnetic Cu impurities, giving decisive evidence of the S+- pairing. This is corroborated by the consistency between the experimental data and the first-principles calculations based on the S+- pairing gap with a scalar scattering potential.
description: Body text 17 pages with 5 figures; Supplementary Materials 12 pages with 5 figues
Critical Comparison of Total Vaporization- Solid Phase Microextraction vs Headspace- Solid Phase Microextraction
Creators: name: Train, Alexandra
Publisher: name: IUPUI ScholarWorks
Year: 2021
Subjects: Gas Chromatography-Mass Spectrometry
Solid Phase Microextraction
Marijuana
Essential Oils
CBD Oil
Synthetic Cannabinoids
Saliva

description: Indiana University-Purdue University Indianapolis (IUPUI)
description: Solid Phase Microextraction (SPME) is a popular sampling technique that can be paired with Gas Chromatography/Mass Spectrometry (GC-MS). SPME-GC-MS is used in forensic chemistry due to its simplification of the sample preparation process. Headspace-Solid Phase Microextraction (HS-SPME) is a technique where the sample is heated to generate volatiles in the headspace of the vial. A SPME fiber is then inserted into the vial and the compounds in the headspace will bind to the fiber. Total Vaporization- Solid Phase Microextraction (TV-SPME) is a technique that is derived from the HS-SPME technique. In Chapter 1, the critical comparison of HS-SPME and TV-SPME is discussed. Samples including marijuana, essential oils, and CBD oil were utilized to compare the two techniques. The compounds of interest in marijuana are the three main cannabinoids: cannabinol (CBN), cannabidiol (CBD), and tetrahydrocannabinol (THC). The sample preparation and GC-MS parameters were kept the same for all samples to determine which SPME technique works best for these sample types and yielded the greatest sensitivity. It was found that HS-SPME shows greater sensitivity with CBN and equivalent sensitivity with essential oils, THC and CBD. In Chapter 2, the detection of synthetic cannabinoids utilizing liquid-liquid injection as well as HS-SPME and TV-SPME is discussed. The detection of these compounds is important because this type of drug has become more prevalent in the United States because they can be chemically altered slightly so they still have the effects of a drug but can evade drug legislation. The detection of synthetic cannabinoids using liquid injection was found to be successful but detection using HS-SPME and TV-SPME was found to be unsuccessful. In Chapter 3, the analyses of real and artificial saliva utilizing HS-SPME and TV-SPME is discussed. Determining the compounds present in real saliva and artificial saliva will be of importance for future research into determining if the presence of drugs in saliva can be analyzed with these techniques. The analyses of real and artificial saliva were found to be successful using HS-SPME, without derivatization, and TV-SPME, with and without derivatization. Many of the compounds present in the real saliva were detected and were confirmed to be compounds regularly found in saliva by other scientific literature.
Effective Field Theory Analysis of Three-Boson Systems at Next-To-Next-To-Leading Order
Creators: name: Ji, Chen
name: Phillips, Daniel R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: We use an effective field theory for short-range forces (SREFT) to analyze systems of three identical bosons interacting via a two-body potential that generates a scattering length, $a$, which is large compared to the range of the interaction, $\ell$. The amplitude for the scattering of one boson off a bound state of the other two is computed to next-to-next-to-leading order (N$^2$LO) in the $\ell/a$ expansion. At this order, two pieces of three-body data are required as input in order to renormalize the amplitude (for fixed $a$). We apply our results to a model system of three Helium-4 atoms, which are assumed to interact via the TTY potential. We generate N$^2$LO predictions for atom-dimer scattering below the dimer breakup threshold using the bound-state energy of the shallow Helium-4 trimer and the atom-dimer scattering length as our two pieces of three-body input. Based on the convergence pattern of the SREFT expansion, as well as differences in the predictions of two renormalization schemes, we conclude that our N$^2$LO phase- shift predictions will receive higher-order corrections of $< 0.2$%. In contrast, the prediction of SREFT for the binding energy of the "deep" trimer of Helium-4 atoms displays poor convergence.
description: 58 pages, 20 figures. Dedicated to Professor Henryk Witala at the occasion of his 60th birthday. Submitted in Few-Body Systems
Wireless Power Transfer: Efficiency, Far Field, Directivity, and Phased Array Antennas
Creators: name: Finnell, Jubilee Kragt Finnell
Publisher: name: IUPUI ScholarWorks
Year: 2021
Subjects: Wireless Power Transfer
Wireless Power Beaming
Phased Array Antennas
Microwave Power Beaming
RF Technology

description: Indiana University-Purdue University Indianapolis (IUPUI)
description: This thesis is an examination of one of the main technologies to be developed on the path to Space Solar Power (SSP): Wireless Power Transfer (WPT), specifically power beaming. While SSP has been the main motivation for this body of work, other applications of power beaming include ground-to-ground energy transfer, ground to low-flying satellite wireless power transfer, mother-daughter satellite configurations, and even ground-to-car or ground-to-flying-car power transfer. More broadly, Wireless Power Transfer falls under the category of radio and microwave signals; with that in mind, some of the topics contained within can even be applied to 5G or other RF applications. The main components of WPT are signal transmission, propagation, and reception. This thesis focuses on the transmission and propagation of wireless power signals, including beamforming with Phased Array Antennas (PAAs) and evaluations of transmission and propagation efficiency. Signals used to transmit power long distances must be extremely directive in order to deliver the power at an acceptable efficiency and to prevent excess power from interfering with other RF technology. Phased array antennas offer one method of increasing the directivity of a transmitted beam through off-axis cancellation from the multi-antenna source. Besides beamforming, another focus of this work is on the equations used to describe the efficiency and far field distance of transmitting antennas. Most previously used equations, including the Friis equation and the Goubau equation, are formed by examining singleton antennas, and do not account for the unique properties of antenna arrays. Updated equations and evaluation methods are presented both for the far field and the efficiency of phased array antennas. Experimental results corroborate the far field model and efficiency equation presented, and the implications of these results regarding space solar power and other applications are discussed. The results of this thesis are important to the applications of WPT previously mentioned, and can also be used as a starting point for further WPT and SSP research, especially when looking at the foundations of PAA technology.
Genetta tigrina
Creators: name: W. Christopher Wozencraft
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Carnivora
Viverridae
Genetta
Genetta tigrina

description: Genetta tigrina (Schreber, 1776). Die Säugethiere, 3(17):pl. 115 [1776]; text, 3(25):425 [1777]. TYPE LOCALITY: "von dem Vorgebirge der guten Hofnug" [South Africa, Cape Prov., Cape of Good Hope]. DISTRIBUTION: From the Cape of Good Hope to S Natal (South Africa), Lesotho, and Orange Free State. SYNONYMS: methi Roberts, 1948. COMMENTS: Subgenus Genetta. May be conspecific with maculata; see Crawford-Cabral (1966), Pringle (1977), Ansell (1978), Schlawe (1981), and Meester et al. (1986).
description: Published as part of W. Christopher Wozencraft, 1993, Order Carnivora, pp. 279-348 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on pages 346-347, DOI: 10.5281/zenodo.7359191
description: {"references": ["Pringle, J. A. 1977. The distribution of mammals in Natal: 2. Carnivora. Annals of the Natal Museum, 23 (1): 93 - 116.", "Ansell, W. F. H. 1978. The mammals of Zambia. National Parks and Wildlife Service, Chilanga, 126 pp.", "Schlawe, L. 1981. Material, Fundort, Text- und Bildquellen als Grundlagen fur eine Artenliste zur Revision der Gattung Genetta G. Cuvier, 1816 (Mammalia, Carnivora, Viverridae). Zoologische Abhandlungen Staatliches Museum fur Tierkunde in Dresden, 37 (4): 85 - 182.", "Meester, J. A. J., I. L. Rautenbach, N. J. Dippenaar, and C. M. Baker. 1986. Classification of southern African mammals. Transvaal Museum Monograph, 5: 1 - 359."]}