cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Laboratory Modeling of Piping Initiation Behavior Through Constricted Outlet
Creators: name: Ibrahim, Ibrahim Ahmed Abdelmotelb
Publisher: name: Utah State University
Year: 2016

description: Internal erosion often occurs when seepage flow is concentrated into a small, unprotected opening. One such example is where sandy soil is eroded through a defect in an overlying clay layer, resulting in a sand boil in the process. The erosion initiates through the heave and backward piping mechanisms and continues beneath the clay layer through the piping process, forming a pipe that progresses toward the source of the seepage. The initiation of erosion at the seepage flow concentration is a complex mechanism involving a number of hydraulic and soil mechanics principles, including: flow concentration, soil arching, heave, detachment of soil grains, and transportation of soil grains.
A laboratory testing program is being performed to investigate the mechanisms of erosion into a concentrated, unprotected exit. The study builds upon previous research on the mechanisms of piping initiation performed at Utah State University and uses a similar apparatus. A number of different soils representing a range of grain size, grain shape, and gradations are being forced to erode into a range of constricted seepage exits. The exit is fixed with a riser pipe to model the upward transport of eroding soils. The results are compared with axisymmetric finite element analyses in order to develop a better understanding of the initiation process for backward erosion piping.
A descriptive case study of selected recreation commissions
Creators: name: Gordon, Terence Ian
Publisher: name: University of British Columbia
Year: 2011

description: Faced with a constant struggle for their existence, certain rural Recreation Commissions in British Columbia are examining their purposes and functions as agencies responsible for recreational programmes. This case study of seven selected rural Recreation Commissions was undertaken to examine and to analyse certain aspects of the organization and operation of these commissions in serving small populations. The Commissions were selected from a list compiled by the Community Programmes Branch Consultants and which met specific criteria assuring the investigator that each Commission was active by Community Programmes Branch standards, voluntarily operated and rural in nature. The Commissions selected consisted of four with populations less than five hundred and three with populations of more than five hundred people. All Commissions studied were in unincorporated areas. Following an interviewing procedure during the summer of 1967 with selected members of each Commission and a second phase consisting of a mailed questionnaire completed by each Commission collectively, case study reports were prepared. In the analysis a breakdown of elements related to the organizational structure of the Commissions and their operation was completed. This analysis determined the basic causes of the Commission’s shortcomings and whose struggle is merely a manifestation of greater problems. Suggestions are then made for correcting the pitfalls that these Commissions have found themselves in, with specific reference made to proper organizational structure, determining the recreational needs of the people represented, leadership development, and budgeting and finance. Finally, a suggestion is outlined for a reorganization of rural Commissions in unincorporated areas such as those studied, under the authority of Regional Districts. In this way many problems common to rural recreation Commissions such as those studied may be overcome.
Anatomical and physiological factors affecting adventitious root formation in Pinus radiata (D.Don) cuttings
Creators: name: Krstic, MP
Publisher: name: University Of Tasmania
Year: 2023

description: Pinus radiata is an important plantation forest species in Tasmania and other regions of the world. The growth of P. radiata from vegetative propagules has been demonstrated to have many advantages over the conventional seedling method of propagation. The major problems associated with the vegetative propagation of P. radiata by cuttings are the seasonal variation in the percentage of cuttings forming roots and the loss of rooting ability with increased stock plant age. This study investigated the anatomical and physiological factors affecting adventitious root formation in P. radiata.. Initial investigations using controlled environment conditions indicated that anatomical and/or physiological factors rather than the propagation environment were mainly responsible for the seasonal variation in the percentage of P. radiata cuttings forming roots. Most of the mortality observed in cuttings occurred prior to callus formation, highlighting the time of adventitious root development which needed to be investigated further. In controlled environmental conditions (20¬¨‚àûC, 95% RH, 14 hour photoperiod), callus initiation was observed approximately 4 weeks after excision and root initiation was observed at approximately 11 weeks after excision. The examination of endogenous plant growth regulator concentrations indicated that the change in the concentration of auxin during the callus formation period may be an important indicator of rooting success in P. radiata cuttings. In those cuttings which exhibited a high rooting percentage, a transient increase in auxin concentration was observed in the basal region of the cuttings 2 and 3 weeks after excision. This was not observed in cuttings which exhibited a low rooting percentage. The concentration of carbohydrates in the basal stem region of the cuttings at the time of excision related poorly to the rooting ability. However, the maintenance of sucrose concentrations in the basal tissue above approximately 15mg/g DW was considered important for the successful rooting of cuttings. The maintenance of adequate water relations in the cuttings during ARF was demonstrated to influence the rooting percentage. In those cuttings which survived and rooted, the leaf water potential was maintained above a value of -2.50MPa. However, in those cuttings which failed to survive the leaf water potential was below -2.50MPa in the week prior to cutting necrosis. In summary, the ability of the cutting to react to excision was considered more important than the absolute levels of these physiological factors at the time of excision. The physiological basis of these findings is discussed and investigated further, from which recommendations are made for improved management practices in commercial P. radiata cutting nurseries.
Predicting Missing Links via Local Information
Creators: name: Zhou, Tao
name: Lu, Linyuan
name: Zhang, Yi-Cheng
Publisher: name: arXiv
Year: 2009
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Missing link prediction of networks is of both theoretical interest and practical significance in modern science. In this paper, we empirically investigate a simple framework of link prediction on the basis of node similarity. We compare nine well-known local similarity measures on six real networks. The results indicate that the simplest measure, namely common neighbors, has the best overall performance, and the Adamic-Adar index performs the second best. A new similarity measure, motivated by the resource allocation process taking place on networks, is proposed and shown to have higher prediction accuracy than common neighbors. It is found that many links are assigned same scores if only the information of the nearest neighbors is used. We therefore design another new measure exploited information of the next nearest neighbors, which can remarkably enhance the prediction accuracy.
description: For International Workshop: "The Physics Approach To Risk: Agent-Based Models and Networks", http://intern.sg.ethz.ch/cost-p10/
Additional file 2 of Pregnancy-related acute kidney injury at high altitude: a retrospective observational study in a single center
Creators: name: Li, Xin
name: Wu, Xiaojing
name: Zhang, Muyin
name: Xu, Lili
name: Li, Guohui
name: Wen, Yumei
name: Wang, Weiming
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy

description: Additional file 2: Comparison of clinical features and pregnancy outcomes between Pr-AKI patients from low and high altitude
title: Fluorescent Probes to Investigate Homologous Recombination Dynamics
Creators: name: Davenport, Eric Parker
Publisher: name: Utah State University
Year: 2016

description: There are multiple mechanisms by which DNA can become damaged. Such damage must be repaired for the cell to avoid ill-health consequences. Homologous recombination (HR) is a means of repairing one specific type of damage, a double-strand break (DSB). This complex pathway includes the Rad51-DNA nucleoprotein filament as its primary machinery. Current methodology for studying HR proteins includes the use of fluorescently labeled DNA to probe for HR dynamics. This technique limits the number of proteins that can be involved in experimentation, and often only works as an end reporter. The work here aims at improving upon standard techniques by creating two fluorescent protein probes. The first probe was developed by directly attaching a fluorophore to Saccharomyces cerevisiae Rad51 with the use of click chemistry and the incorporation of unnatural amino acids. This probe could function as a primary reporter on the formation and dissociation of the Rad51-DNA filament in the presence of pro- and anti- HR mediator proteins. The second probe was created by labeling the exterior cysteine residues of Plasmodium falciparum single strand DNA binding protein (SSB) with a fluorophore via maleimide chemistry. This probe acts as a secondary reporter for HR dynamics by signaling for when free single stranded DNA (ssDNA) is available.
title: Partially Closed Valve Effects on Electromagnetic Flow Meter Accuracy
Creators: name: Jarrett, Jordan Clark
Publisher: name: Utah State University
Year: 2016

description: As the need to manage water resources increases, the ability to accurately measure use becomes crucial. In industry, measurement inaccuracies can cost either the supplier or consumer large amounts of money or even result in a depleted resource. Generally, flow meters need a flow profile to be fully developed to optimize measurement accuracy.
In order to produce accurate measurements, most flow meters require a straight section of pipe immediately upstream of the meter. The straight pipe helps to develop the flow profile and produces flow conditions that are as ideal as possible. In many field installations, space restrictions lead to meters being installed with reduced straight pipe between a flow disturbance and the meter.
Electromagnetic flow meters are referred to by several different names including: magnetic flow meter, mag meter or mag. The electromagnetic flow meter has grown in popularity in recent years as technology has improved and costs have decreased. Manufacturers commonly claim that their meters can produce highly accurate flow measurements, some as low as ±0.10%, with reduced upstream straight pipe requirements as low as 0 pipe diameters between a disturbance and the meter itself.
The results of this study provide quantified error associated with a partially closed butterfly valve on electromagnetic flow meter accuracy. The results show the effect of four valve openings (25%, 50%, 75%, and 100% open), at five locations downstream of the valve (1, 3, 5, 10, and 20 pipe diameters), and at two different meter orientations to the valve shaft. It was concluded in the study that twenty pipe diameters of length are required to produce accurate measurements (within the manufacturer’s specified accuracy) when a magnetic flow meter is installed downstream of a throttling butterfly valve. Surprisingly, the largest effect to the meter’s accuracy unexpectedly occurred when the upstream butterfly valve was fully open and not when it was in a throttling position.
Notes about collapse in magnetohydrodynamics
Creators: name: Kuznetsov, E. A.
name: Mikhailov, E. A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We discuss a problem about magnetic collapse as a possible process for singularity formation of the magnetic field in a finite time within ideal magneto-hydrodynamics for incompressible fluids. This process is very important from the point of view of various astrophysical applications, in particular, as a mechanism of magnetic filaments formation in the convective zone of the Sun. The collapse possibility is connected with compressibility of continuously distributed magnetic field lines. A well-known example of the formation of magnetic filaments in the kinematic dynamo approximation with a given velocity field, first considered by Parker in 1963, rather indicates that the increase in the magnetic field is exponential in time. In the case of the kinematic approximation for the induction equation, the magnetic filaments formation is shown to occur in areas with a hyperbolic velocity profile.
title: Assessing Plant Community Structure in the Upper Las Vegas Wash Conservation Transfer Area, Nevada: The Influence of Biotic and Abiotic Variables
Creators: name: Croft, Amy A.
Publisher: name: Utah State University
Year: 2016

description: Ecological communities are complex, the structure of which is composed of interactions between multiple community characteristics and the abiotic and biotic factors shaping them. Because of this complexity, ecological studies are generally limited in scope and size, often dissecting communities into their component parts to examine them piece by piece. While this might be the most practical method to study communities, this approach often neglects other characteristics that, with their inclusion, would provide a more complete picture of community ecology. The studies described in this dissertation were conducted in an effort to synthesize the complexity that is inherent in ecological plant communities growing on a Mojave Desert bajada. Each study addresses a separate component of community structure, which, taken as a whole, provides a more thorough understanding of arid plant community dynamics. Overall, our results reveal the importance of substrate variables and their role in shaping plant community structure in arid environments. In addition, these investigations provide evidence of the strong role that facilitation plays on this bajada and possibly arid plant communities as a whole. The comprehensive approach described in this dissertation will enable ecologists to gain a more complete understanding of community dynamics and apply this knowledge to various climate change and land management scenarios.
A case study of children participating in a perceptual-motor program
Creators: name: Lendvoy, Harry F.
Publisher: name: University of British Columbia
Year: 2011

description: The purpose of this study was to provide a description of the physical performance of a group of slow learning children who participated in a perceptual-motor program and to observe the effects of special training in motor skills on the visual perception and motor capacity of each child. Eight subjects, ranging in age from six to nine years, were selected to participate in the study. Each subject was referred to the program because of a diagnosis of retarded perceptual-motor development. The subjects were given pre-training standardized tests in General Motor Capacity and Visual Perception. They then received approximately fifty minutes of daily instruction in motor skills for a total of sixty-five days. At the conclusion of the special training period, the subjects were once again tested in general motor capacity and visual perception. The scores on the initial and final tests in motor capacity and perceptual ability were compared and the differences were recorded. A case study was conducted on each subject in order to obtain as much information as possible on each individual participating in the program. Information was obtained from medical and school records, psychologist and teacher reports, and the detailed observations of the investigator. The results indicated that difficulties in differentiation, balance and coordination appeared to be characteristic of the child having inadequate perceptual-motor development. A comparison of pre- and post-training test results showed that an improvement in motor capacity and visual perception occurred in all the subjects. Marked improvements were also observed in the children's behavior and attitude. From the findings of this study it appears that a special motor training program is a major contributor to the overall rehabilitation of the perceptually-motor handicapped child.
Tidal interaction of black holes and Newtonian viscous bodies
Creators: name: Poisson, Eric
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The tidal interaction of a (rotating or nonrotating) black hole with nearby bodies produces changes in its mass, angular momentum, and surface area. Similarly, tidal forces acting on a Newtonian, viscous body do work on the body, change its angular momentum, and part of the transferred gravitational energy is dissipated into heat. The equations that describe the rate of change of the black-hole mass, angular momentum, and surface area as a result of the tidal interaction are compared with the equations that describe how the tidal forces do work, torque, and produce heat in the Newtonian body. The equations are strikingly similar, and unexpectedly, the correspondence between the Newtonian-body and black-hole results is revealed to hold in near-quantitative detail. The correspondence involves the combination k_2 τof ``Love quantities'' that incorporate the details of the body's internal structure; k_2 is the tidal Love number, and τis the viscosity-produced delay between the action of the tidal forces and the body's reaction. The combination k_2 τis of order GM/c^3 for a black hole of mass M; it does not vanish, in spite of the fact that k_2 is known to vanish individually for a nonrotating black hole.
description: 12 pages, no figures
Riffing on a PID Federation - Slides and Materials
Creators: name: Kotarski, Rachael
name: Madden, Frances
name: Reimer, Torsten
Publisher: name: Zenodo
Year: 2021

description: Presentation from PIDapalooza 2021, including feedback from Mentimeter. The recently concluded FREYA project commissioned a report to explore the feasibility of a PID Federation or some other type of entity to ensure the sustainability of PID Service providers and their users. This session updated the community on the aspects of the idea explored during the consultation, the report's recommendations and the FREYA project's response to it. Attendees also had the chance to provide feedback on the report's findings.
Documentation for Master of Fine Art
Creators: name: McIntyre, LM
Publisher: name: University Of Tasmania
Year: 2023

description: My objective is to research and comprehend the intricacies of and connections between various mythologies of existence, to investigate beyond the immediate significance of signs and beyond sub-cultural interpretations, and so move into the detailed fabric of meaning that our culture imposes. I am interested in exploring the rhythms of life, death and decay in the physical world and the psychic world so that my perceptions have greater clarity. Coupled with fantasy and imagination, I want to make images that are able to elucidate not only my own personal truths, but illustrate a type of experience that is universal. This procedure leads me to greater awareness, but at the same time to the complexities of perception. This means recognising failures in my communication which gives me impetus to learn and search for more effective expressions of the insights which come through experience. I would like to develop my awareness on moral and political changes in relation to the individuals role in society through the ages including contemporary culture. I would like to research the myths and rituals of different cultures and their function in expressing that culture's needs and experience. This would allow me the opportunity to explore the life motivating and directing forces of these myths and their relationship to contemporary society. I believe this would be highly relevant to my work. I want to explore the common denominators of myths and inherited mythical archetypes and their influence on modem consciousness. I aim to create a dialogue utilizing symbolic forms created by the unconscious mind and recognized by the conscious, in continuous interaction with contemporary life. Utilizing practical experimentation I aim to explore the laws of Gestalt psychology. By acquiring a greater understanding of these laws (e.g. symmetry, proximity and similarity etc.), I can then choose to group them in a harmonious way, or to create a feeling of tension and dissonance, to camouflage or to force the viewer to a deeper consideration of the work. By understanding the psychological, symbolic and emotional affects of formal elements, such as colour, shape, darkness and light, I aim to create layers of meaning that direct the viewer's mind to something beyond the work of art, to a meaning that has universal significance. I hope to show the viewer that the visible expressive elements of the images I produce represent a symbolic rather than a literal meaning. As these two areas of study interact and reinforce each other, I hope to evolve new visual techniques to assist people toward an understanding and appreciation of our inward, as well as the world's outward order of facts in relation to the conditions of contemporary life.
Gravity as Quantum Entanglement Force
Creators: name: Lee, Jae-Weon
name: Kim, Hyeong-Chan
name: Lee, Jungjai
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We conjecture that the total quantum entanglement of matter and vacuum in the universe tends to increase with time, like entropy, and that an effective force is associated with this tendency. We also suggest that gravity and dark energy are types of quantum entanglement forces, similar to Verlinde's entropic force, and give holographic dark energy with an equation of state comparable to current observational data. This connection between quantum entanglement and gravity could give some new insights into the origins of gravity, dark energy, and the arrow of time.
description: revtex4-1
Capreolus capreolus
Creators: name: Aidek, Ahmad E.
name: Ibrahim, Amir
name: Amr, Zuhair
name: Hutterer, Rainer
name: Kryštufek, Boris
name: Serra, Gianluca
name: Benda, Petr
name: Shkaky, Yesra
name: Barbanera, Filippo
name: Al-Sheikhly, Omar F.
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Artiodactyla
Cervidae
Capreolus
Capreolus capreolus

description: 100. Western Roe Deer, Capreolus capreolus (Linnaeus, 1758)
(IUCN Red List: LC)
Subspecies: The Syrian population is not assigned to any distinct subspecies.
Distribution: Uncertain status; apparently uncommon and in low numbers; occurs in wooded valleys of the coastal region and Sahl Al-Ghab, while it is extinct west of Aleppo (Fig. 109).
Previous records: Bush clad hills west of Aleppo (Carruthers 1909), Latakia (Talbot 1960; Harrison & Bates 1991), Slenfe mountains (Serra 2004), Jabal Shoeh (Masseti 2000), Abu Qubays and Al-Furunlok (Daoud & Khalil 2009a, b), south of Aisam but extinct since 1993 (A Aidek, Syria, pers. comm. 2022).
Recent records: east of Slenfeh, Al-Furunlok and Abu Qubays (2008), Mashqita (2010), Deir Mama (2012), Masiat, ad-Daliah and Ghmam (2020–2021), and Ain ar-Rajm’ah (2022).
description: Published as part of Aidek, Ahmad E., Ibrahim, Amir, Amr, Zuhair, Hutterer, Rainer, Kryštufek, Boris, Serra, Gianluca, Benda, Petr, Shkaky, Yesra, Barbanera, Filippo & Al-Sheikhly, Omar F., 2025, Checklist of Mammals of Syria, pp. 1-130 in Zootaxa 5580 (1) on page 100, DOI: 10.11646/zootaxa.5580.1.1, http://zenodo.org/record/14797597
The Nature of Carbon Dioxide Bearing Ices in Quiescent Molecular Clouds
Creators: name: Whittet, D. C. B.
name: Cook, A. M.
name: Chiar, J. E.
name: Pendleton, Y. J.
name: Shenoy, S. S.
name: Gerakines, P. A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The properties of the ices that form in dense molecular clouds represent an important set of initial conditions in the evolution of interstellar and preplanetary matter in regions of active star formation. Of the various spectral features available for study, the bending mode of solid CO2 near 15 microns has proven to be a particularly sensitive probe of physical conditions, especially temperature. We present new observations of this absorption feature in the spectrum of Q21-1, a background field star located behind a dark filament in the Cocoon Nebula (IC5146). We show the profile of the feature be consistent with a two-component (polar + nonpolar) model for the ices, based on spectra of laboratory analogs with temperatures in the range 10-20K. The polar component accounts for 85% of the CO2 in the line of sight. We compare for the first time 15 micron profiles in three widely separated dark clouds (Taurus, Serpens and IC5146), and show that they are indistinguishable to within observational scatter. Systematic differences in the observed CO2/H2O ratio in the three clouds have little or no effect on the 15 micron profile. The abundance of elemental oxygen in the ices appears to be a unifying factor, displaying consistent behavior in the three clouds. We conclude that the ice formation process is robust and uniformly efficient, notwithstanding compositional variations arising from differences in how the O is distributed between the primary species (H2O, CO2 and CO) in the ices.
title: Socialization of Respeto in Immigrant Mexican Families
Creators: name: Tafoya, Marsha
Publisher: name: Utah State University
Year: 2016

description: The purpose of this study was to examine the behavioral aspects and socialization of the cultural value of respeto in a community sample of Mexican immigrant mothers and fathers and their Mexican and Mexican American children. Cultural values are socialized in children from a very young age through parenting practices so that children learn and engage in behaviors that are culturally relevant within their culture. Respeto is a cultural value that the literature suggests is one of the most important values in Latina/o communities, especially of Mexican origin individuals.
Recommendations have been set forth from many fields including education, mental health, and health to take into account this cultural value in order to optimally engage Latinas/os in treatments. Cultural values have been successfully incorporated in evidenced-based treatments, such as cultural adaptations, but further examination and understanding of cultural values at a deeper level is needed in order to engage in culturally competent treatments and interventions.
To understand and examine respeto, two scales were developed from the literature, community experts, and psychologist experts to capture children’s behavioral aspects of respeto and how parents socialize this value in them. Behavioral observations were coded to capture children’s display of respeto behaviors when they were interacting with their mothers and fathers. In addition, the socialization of respeto behaviors were coded for both mothers and fathers. Children displayed more respeto behaviors to their fathers than to their mothers. There were no gender differences in displays of respeto behaviors or socialization of respeto by mothers or fathers. Respeto and socialization were not related to child outcomes. The only significant finding from the primary analyses was a significant correlation between parent sex and child display of respeto, with fathers experiencing more respeto than mothers, t(52) = 2.714, p = .009, d = 0.753. One of the limitations was that this was a prevention sample and future research should examine children with a broader range of behavioral problems.
Reconsidering the gender and scopic limits of traditional art forms : reclaiming the space of a woman's identity
Creators: name: Hoare, JAP
Publisher: name: University Of Tasmania
Year: 2023

description: The content and form of contemporary concepts of identity in Australia originate in Australia's colonial history in which European structure of thinking and imaging were imposed on the colony. These structures were masculine and scopic in form and hence inhibited identities and practices, which did not conform to these structures. The project primarily interrogates and deconstructs the masculine and scopic structures, which give legitimacy to both colonial practice and to painting and photographic media as the dominant visual representation of this practice. It is the theme of this project that the deconstruction is primarily a matter of considering issues of spatiality associated with scopic regimes. My intent has been to imagine and make a new type of space, which does not centre the subject in dominant masculine and scopic terms. The development of such a new type of space aims to create a new stage on which other roles of identity can be imagined. More importantly it provides the artists with the opportunity to re-address the scopic as the dominant vehicle of meaning, and hence liberate the body as a more holistic and multiple sphere of identity (rather that one limited by the one sense of visualisation). A key tactic has been to incorporate media that are extra visual, in particular the use of textiles within an installation format The textile component of this project explores notions of traditional textile art practice. The organic nature and lucidity of the cloth provided a surface on which the stitch acts as a form of mark making, etching the surface of the fabric with a deconstucted symbol of identity. Through lighting an appeal to the other senses and experiences such as touch and movement is made. The originality of this installation is to make an artwork, which is grounded, on a new relationship between the viewer's body and with this relationship stage new approaches to identity.
Orbiting binary black hole evolutions with a multipatch high order finite-difference approach
Creators: name: Pazos, Enrique
name: Tiglio, Manuel
name: Duez, Matthew D.
name: Kidder, Lawrence E.
name: Teukolsky, Saul A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present numerical simulations of orbiting black holes for around twelve cycles, using a high-order multipatch approach. Unlike some other approaches, the computational speed scales almost perfectly for thousands of processors. Multipatch methods are an alternative to AMR (adaptive mesh refinement), with benefits of simplicity and better scaling for improving the resolution in the wave zone. The results presented here pave the way for multipatch evolutions of black hole-neutron star and neutron star-neutron star binaries, where high resolution grids are needed to resolve details of the matter flow.
Natural Language Proof Checking in Introduction to Proof Classes -- First Experiences with Diproche
Creators: name: Carl, Merlin
name: Lorenzen, Hinrich
name: Schmitz, Michael
Publisher: name: arXiv
Year: 2022
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Artificial Intelligence (cs.AI)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: We present and analyze the employment of the Diproche system, a natural language proof checker, within a one-semester mathematics beginners lecture with 228 participants. The system is used to check the students' solution attempts to proving exercises in Boolean set theory and elementary number theory and to give them immediate feedback. The benefits of the employment of the system are assessed via a questionnaire at the end of the semester and via analyzing the solution attempts of a subgroup of the students. Based on our results we develop approaches for future improvements.
description: In Proceedings ThEdu'21, arXiv:2202.02144
title: Investigation of Solubilization, Cold Gelation, and Rennet Coagulation Properties of Highly Concentrated Micellar Casein Concentrate for Use in Cheese Making
Creators: name: Lu, Ying
Publisher: name: Utah State University
Year: 2016

description: Highly concentrated micellar casein concentrate (HC-MCC), a potential ingredient for cheese making, containing ~20% casein with ~70% of serum proteins removed by microfiltration, and diafiltration of skim milk, and then further concentrated by vacuum evaporation. The objectives of this research were to investigate solubilization, cold gelation, rennet coagulation properties of recombined HC-MCC and cream for its use in cheese making.
In Chapter 3, either mixing thawed HC-MCC in water at high temperature (~50C) or addition of trisodium citrate can achieve complete dispersion and more than 80% solubility of HC-MCC in water (3% protein). Overnight storage helps to fully disperse HC-MCC, but only reaches ~30% of solubility at 20C. Cold-gelation of HCMCC is thermally reversible and reducing protein levels in HC-MCC can decrease its CGT. The HC-MCC with less than 16% of protein does not gel at 5C. We propose that cold-gelation of HC-MCC occurs when the kinetic energy of the casein micelles is sufficiently reduced to inhibit their mobility in relation to adjacent casein micelles.
In Chapter 4, the recombined concentrated milk (RCM) by mixing thawed frozen HC-MCC and cream with 12% casein at pH 6.6 does not gel until cooled below 12°C. Addition of either sodium citrate or high levels of calcium increased CGT, although low levels of calcium did not impact CGT. Cold gelation of RCM was thermally reversible, even when citrate was added to partially chelate calcium. We propose that cold gelation of RCM occurs when protein strands that have been partially released from the casein micelles entangle, restrict their mobility and form a fine stranded gel network. The RCM at a casein level of 12% (wt/wt) has potential for use in cheese making.
In Chapter 5, reducing rennet level can increase coagulation time of RCM (11% casein) without impact on curd firmness or firming rate. Decreased coagulation temperature helps to increase coagulation time and decrease curd firmness rate, but also increases the initial viscosity of RCM. Pre-acidified RCM has no advantage in increasing coagulation time, decreasing curd firmness or firming rate. Microstructure of RCM and its coagulum indicates that the increased curd firmness probably results from the highly inter-linked and longer protein strands in RCM curd. Reducing rennet level can be applied to slow down rennet coagulation of RCM (11% casein) in cheese making.
ZAMONAVIY KORXONALARNI BOSHQARISH VA RIVOJLANISHIDA INTERNET MARKETINGNING O'RNI
Creators: name: Buxoro muxandislik-texnologiyasi instituti  "Iqtisodiyot" kafedrasi o`qituvchisi  Jo`raeva Nasiba Rustamov
name: Biznes va tadbirkorlik oliy maktabidagi "70411202-Loyixa boshqaruvi" mutaxsisligi PM-22-B01 gurux  magistranti  Naimov Rustam Muzaffarovich
Publisher: name: Zenodo
Year: 2023

description: internet-marketing; virusli marketing; bozor tadqiqotlari, ijtimoiy tarmoqlar..

 

Annotatsiya: Zamonaviy Internet-texnologiyalar yordamida amalga oshirilishi mumkin bo'lgan marketing tarkibiy qismlari boshqarish va ularning korxonalarni rivojlantirish istiqbollari taqdim etilgan va tasniflangan
ТАРИХИЙ ОБИДАЛАРНИ  РЕКОНСТРУКЦИЯ ҚИЛИШ ҚОИДАЛАРИ
Creators: name: Атошов, Санжар
Publisher: name: Zenodo
Year: 2025

description: Мақолада Хива шаҳридаги  меъморий ёдгорликлар, ўзбек миллий менталитетига хос энг муҳим жиҳатлар яъни халқимизнинг маънавиятга бўлган туғма чанқоқлиги, аждодларимиз тарихи, улар томонидан яратилган маънавий, маданий ёдгорликларни қадрлаш, мамлакатимиз ҳудудида кўп минг йиллик тарих давомида инсоният томонидан турли йўллар билан яратилганлиги, тарихий обидаларни, маданий моддий бойликларни бугунги кундаги ҳолатини ўрганиш каби жиҳатлар олиб борилган.
Application of the Parallel Dichotomy Algorithm for solving Toeplitz tridiagonal systems of linear equations with one right-hand side
Creators: name: Terekhov, Andrew V.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65F05, 65Y05, 68W10, 35J05

description: Basing on a modification of the "Dichotomy Algorithm" (Terekhov, 2010), we propose a parallel procedure for solving tridiagonal systems of equations with Toeplitz matrices. Taking the structure of the Toeplitz matrices, we may substantially reduce the number of the "preliminary calculations" of the Dichotomy Algorithm, which makes it possible to effectively solve a series as well as a single system of equations. On the example of solving of elliptic equations by the Separation Variable Method, we show that the computation accuracy is comparable with the sequential version of the Thomas method, and the dependence of the speedup on the number of processors is almost linear. The proposed modification is aimed at parallel realization of a broad class of numerical methods including the inversion of Toeplitz and quasi-Toeplitz tridiagonal matrices.
description: New tests have been added
title: Home Range (?) of the Flat-tailed Horned Lizard Phrynosoma mcallii
Creators: name: Miller, Peggy Anderson
Publisher: name: Utah State University
Year: 1999

description: Area used by male and female Phrynosoma mcallii (Hallowell) was studied in a population located on the Barry M. Goldwater Aerial Gunnery Range near Yuma, Arizona. Area used by males and females shifted through time and did not fit the definition of home range. Summer male and female area used was not significantly different (F=2.625, df=1, P=0.131), but male areas used were significantly larger for 15-day time periods (F=9.67, P=0.0003). Males overlapped the area they occupied in consecutive 15-day time periods more often than did females. Female area used never overlapped within a 15-day time period. Male area used overlapped those of other males and females within a 15-day time period.
title: Student Satisfaction at Utah State University Regional Campuses
Creators: name: Adams, Taylor K.
Publisher: name: Utah State University
Year: 2016

description: Research conducted over multiple decades explores student attrition from higher education institutions. The majority of this research relates to traditional, on-campus student populations. However, colleges and universities are serving more nontraditional students than before by increasing distance education course offerings. Although enrollments are increasing, few studies examine retention of nontraditional learners in a distance education setting. Even fewer suggest institutional action based on student satisfaction of nontraditional, distance learners. This study examined student satisfaction and education-related priorities of Utah State University (USU) undergraduate students at regional campus locations throughout the state of Utah. Perceived programming needs were determined based on the discrepancy between student-reported satisfaction and importance rankings of education-related items. The highest discrepancies between priorities and satisfaction of undergraduate students at USU regional campus locations were: use of student activity fees, adequate availability of financial aid, tuition being a worthwhile investment, registering for classes with few conflicts, scheduling of courses to complete program, timeliness of financial aid announcements, academic advisor’s knowledge of major requirements, instruction within major, variety of course offerings, and classes being scheduled at convenient times.
title: Impact of Heavy Metal Contamination From Coal Flue Gas on Microalgae Biofuel and Biogas Production Through Multiple Conversion Pathways
Creators: name: Hess, Derek E.
Publisher: name: Utah State University
Year: 2016

description: Large scale biofuel production from microalgae is expected to be integrated with point source CO2 sources, such as coal fired power plants. Flue gas (CO2) integration represents a required nutrient source for accelerated growth while concurrently providing an environmental service. Heavy metals inherent in coal will ultimately be introduced into the culture system. The introduced heavy metals have the potential to bind to microalgae cells, impact growth due to toxicity, and negatively impact the quality of biofuel and other microalgal derived products. Heavy metals As, Cd, Co, Cr, Cu, Hg, Mn, Ni, Pb, Sb, Se, Sn, V and Zn, commonly present in coal, were introduced to the microalgae growth medium at a concentration expected from a 7 day growth period using coal flue gas. Experimentation was conducted with Nannochloropsis salina cultivated in photobioreactors at a light intensity of 1000 μmol m-2 s-1. Heavy metals negatively impacted the growth with the average productivity being 0.54 ± 0.28 g L-1 d-1, corresponding to a decrease of 52% in biomass yield compared to control growths. Heavy metal analysis showed significant binding of the majority of the heavy metals to the biomass. A lipid content analysis found a decrease in lipid content from 38.8 ± 0.62% to 31.58 ± 0.50% (percent dry biomass). Control and heavy metal contaminated biomass were processed into biofuel through one of two different in-situ transesterification techniques, either acid-catalyzed or supercritical methanol conversion. The acid-catalyzed conversion resulted in an average crude biofuel production decrease from 0.31 ± 0.03 grams biofuel/gram microalgae for the control algae to 0.28 ± 0.02 grams biofuel/gram microalgae for the heavy metal algae, representing a 9.7% reduction. Supercritical methanol conversion exhibited a similar trend corresponding to a 15.8% reduction. Compared to the control, the total production of biofuel from the contaminated system was decreased by 51% for the acid-catalyzed conversion and 55% for the supercritical methanol conversion. Heavy metal analyses were performed on the biofuel, lipid extracted algae, and other biofuel conversion byproducts. Biochemical methane potential testing was performed on the lipid extracted algae to determine the effect of heavy metals on the generation of biogas. The effects of heavy metals in combination with the effects of acid catalyzed transesterification were found to have a positive effect on the amount of methane produced with an average productivity of 105.89 mL g-COD-1 from the heavy metals contaminated LEA compared to the control microalgae biomass which produced 53.25 mL g-COD-1.
title: Three Essays on US Agricultural Insurance
Creators: name: Kim, Taehoo
Publisher: name: Utah State University
Year: 2016

description: Many economists and policy analysts have conducted studies on crop insurance. Three research gaps are identified: i) moral hazard in prevented planting (PP), ii) choice of PP and planting a second crop, and iii) selecting margin protection in the Dairy Margin Protection Program (MPP-Dairy).
The first essay analyzes the existence of moral hazard in PP. The PP provision is defined as the “failure to plant an insured crop by the final planting date due to adverse events”. If the farmer decides not to plant a crop, the farmer receives a PP indemnity. Late planting (LP) is an option for the farmer to plant a crop while maintaining crop insurance after the final planting date. Crop insurance may alter farmers’ behavior in selecting PP or LP and could increase the likelihood of PP claims even though farmers can choose LP. This study finds evidence that a farmer with higher insurance coverage tends to choose PP more often (moral hazard). Spatial panel models attest to the existence of moral hazard in PP empirically.
If a farmer chooses PP, s/he receives the PP indemnity and may either leave the acreage unplanted or plant a second crop, e.g., soybean for corn. If the farmer plants a second crop after the PP claim, the farmer receives a 35% of PP payment. The current PP provision fails to provide farmers with an incentive to plant a second crop; 99.9% of PP claiming farmers do not plant a second crop. Adjusting PP indemnity payment may encourage farmers to plant a second crop. The second essay explores this question using a stochastic simulation and suggests to increase the PP payment by 10%-15%.
The third essay investigates why Wisconsin dairy farmers purchase more supplementary protection than California farmers in a MPP-Dairy introduced in the 2014 Farm Bill. MPP-Dairy provides dairy producers with margin protection when the national dairy margin is below a farmer selected threshold. This study determines whether conditional probabilities regarding regional and national margins have a role in farmer’s decision-making to purchase supplementary coverages using Copula models. Results indicate that Wisconsin farmers have higher conditional probabilities and purchase more buy-up coverages.
Dynamical Structure of Viscous Accretion Disks with Shocks
Creators: name: Das, Santabrata
name: Becker, Peter A.
name: Le, Truong
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We develop and discuss global accretion solutions for viscous ADAF disks containing centrifugally supported isothermal shock waves. The fact that such shocks can exist at all in ADAF disks is a new result. Interestingly, we find that isothermal shocks can form even when the level of viscous dissipation is relatively high. In order to better understand this phenomenon, we explore all possible combinations of the fundamental flow parameters, such as specific energy, specific angular momentum, and viscosity, to obtain the complete family of global solutions. This procedure allows us to identify the region of the parameter space where isothermal shocks can exist in viscous ADAF disks. The allowed region is maximized in the inviscid case, and it shrinks as the level of viscous dissipation increases. Adopting the canonical value gamma=1.5 for the ratio of specific heats, we find that the shock region disappears completely when the Shakura-Sunyaev viscosity parameter alpha exceeds the critical value ~0.27. This establishes for the first time that steady ADAF disks containing shocks can exist even for relatively high levels of viscous dissipation. If an isothermal shock is present in the disk, it would have important implications for the acceleration of energetic particles that can escape to power the relativistic jets commonly observed around underfed, radio-loud black holes. In two specific applications, we confirm that the kinetic luminosity lost from the disk at the isothermal shock location is sufficient to power the observed relativistic outflows in M87 and Sgr A*.
description: accepted by ApJ
On Cayley graphs of virtually free groups
Creators: name: Antolin, Yago
Publisher: name: arXiv
Year: 2009
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: In 1985, Dunwoody showed that finitely presentable groups are accessible. Dunwoody's result was used to show that context-free groups, groups quasi-isometric to trees or finitely presentable groups of asymptotic dimension 1 are virtually free. Using another theorem of Dunwoody of 1979, we study when a group is virtually free in terms of its Cayley graph and we obtain new proofs of the mentioned results and other previously depending on them.