cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Alternating muscle activation patterns across the deltoid muscles during fatigue
Creators: name: Zhao, Ningzhen
name: 0009-0005-0015-2121
Publisher: name: The University of Texas at Austin
Year: 2023
Subjects: Alternating muscle activation
Deltoid muscle

description: Alternating muscle activation (AMA) is a muscle recruitment strategy used by the central nervous system to prolong force output during fatigue. AMA has two periods: coactivation (Co-A) and trade-off (TO). We investigated AMA parameters across the three heads of the deltoid muscle during a submaximal isometric fatiguing contraction. Surface electromyographic (sEMG) was recorded from 10 healthy individuals (5 males and 5 females) from the anterior deltoid (AD), middle deltoid (MD), and posterior deltoid (PD) during a sustained isometric fatiguing contraction of 25% maximal voluntary contraction (MVC) in the scapular plane. Synergistic muscle pairs (AD-PD, AD-MD, PD-MD) were analyzed for Co-A duration, TO duration, and frequency of AMA cycles. We selected 15s from the beginning of the stable force level period as the pre-fatigue phase, and 15s from the end of the stable force level period as the post-fatigue phase. A two-way (muscle pair and fatigue phase) repeated measures ANOVA with Tukey’s post-hoc analyses was used to compare EMG data normalized to percent EMG max. There was a main effect of time (p < 0.01) for TO duration and Co-A duration. TO duration increased with time, and Co-A duration decreased. However, there were no significant correlations between endurance time and the AMA patterns. This finding demonstrates that AMA patterns exist in deltoid muscles during a submaximal isometric fatiguing contraction, but it does not affect endurance time.
Conservation laws and symmetries of radial generalized nonlinear $p$-Laplacian evolution equations
Creators: name: Recio, Elena
name: Anco, Stephen C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: A class of generalized nonlinear p-Laplacian evolution equations is studied. These equations model radial diffusion-reaction processes in $n\geq 1$ dimensions, where the diffusivity depends on the gradient of the flow. For this class, all local conservation laws of low-order and all Lie symmetries are derived. The physical meaning of the conservation laws is discussed, and one of the conservation laws is used to show that the nonlinear equation can be mapped invertibly into a linear equation by a hodograph transformation in certain cases. The symmetries are used to derive exact group-invariant solutions from solvable three-dimensional subgroups of the full symmetry group, which yields a direct reduction of the nonlinear equation to a quadrature. The physical and analytical properties of these exact solutions are explored, some of which describe moving interfaces and Green's functions.
description: 33 pages. References and comparisons with previous work on special cases of diffusion-reaction with gradient nonlinearities have been added
Do Shocks and Environmental Factors Shape Personality Traits? Evidence from the Ultra-Poor in Uganda
Creators: name: Mehra, Shikhar
name: Stopnitzky, Yaniv
name: Alloush, Mo
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Computational Biology

description: Personality characteristics and non-cognitive skills are key determinants of decision-making and economic outcomes. While personality is commonly believed to be stable after age 30, evidence suggests that significant changes in occupational or social roles, or exposure to family or health shocks, can have effects on personality traits. In this paper, we study the short-term effects of two kinds of shocks on measured personality traits among young adults from ultra-poor households in Uganda. In particular, we examine the short-term impacts of (i) a randomized anti-poverty program and (ii) environmental changes—exposure to drought, high temperatures, and wind—on personality traits. We find significant differences in measured personality traits across these factors, in particular among food insecure individuals. These results suggest that economic shocks and environmental factors may have an effect on the non-cognitive skills among young ultra-poor adults. On the other hand, our results also suggest that caution is warranted when using these tools used to measure personality traits in such rural, low-income settings.
Non-perturbative effects for dark sectors with QCD portals
Creators: name: Biondini, Simone
name: Chowdhury, Talal Ahmed
name: Saad, Shaikh
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work, we consider a class of dark matter (DM) models where the DM does not directly interact with the Standard Model (SM) particles at the tree-level. Therefore, the coannihilation mechanism is crucial in achieving the correct DM relic abundance, which in turn requires the coannihilating partner to be close in mass to the actual DM particle. In our systematisation of the models' class, the mediator and the coannihilation partner are assumed to be charged under QCD interactions. This last feature calls for a scrutiny of non-perturbative effects, namely Sommerfeld factors and bound-state formation, on the annihilations of the colored partner. Such non-perturbative effects are illustrated with an example model comprising a scalar leptoquark mediator, a Dirac vector-like fermion coannihilation partner, and a singlet DM fermion. Phenomenological features of this model, namely DM direct and indirect detection prospects, collider implications, and impact on the muon anomalous magnetic moment, are discussed.
description: 47 pages, 12 figures
The magnetic fields of starburst galaxies. I. Identification and characterization of the thermal polarization in the galactic disk and outflow
Creators: name: Lopez-Rodriguez, Enrique
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Far-infrared polarized emission by means of magnetically aligned dust grains is an excellent tracer of the magnetic fields (B-fields) in the cold phase of the galactic outflows in starburst galaxies. We present a comprehensive study of the B-fields in three nearby ($3.5$-$17.2$ Mpc) starbursts (M82, NGC 253, and NGC 2146) at $5$ pc-$1.5$ kpc resolutions using publicly available $53$-$890$ $μ$m imaging polarimetric observations with SOFIA/HAWC+, JCMT/POL-2, and ALMA. We find that the polarized spectral energy distributions (SEDs) of the full galaxies are dominated by the polarized SEDs of the outflows with dust temperatures of $T_{\rm{d,outflow}}^{\rm{PI}}\sim45$ K and emissive index of $β_{\rm{outflow}}^{\rm{PI}}\sim2.3$. The disks are characterized by low $T_{\rm{d,disk}}^{\rm{PI}}=[24,31]$ K and $β_{\rm{disk}}^{\rm{PI}}\sim1$. We show that disk- and outflow-dominated galaxies can be better distinguished by using polarized SEDs instead of total SEDs. We compute the $53$-$850$ $μ$m polarization spectrum of the disk and outflow and find that dust models of the diffuse ISM can reproduce the fairly constant polarization spectrum of the disk, $\langle P_{\rm{disk}} \rangle=1.2\pm0.5$%. The dust models of heterogenous clouds and two temperature components are required to explain the polarization spectrum of the outflow ($2$-$4$% at $53$ $μ$m, $\sim1$% at $850$ $μ$m, and a minimum within $89$-$154$ $μ$m). We conclude that the polarized dust grains in the outflow arise from a dust population with higher dust temperature and emissivities than those from the total flux. The B-fields of the outflows have maximum extensions within $89$-$214$ $μ$m reaching heights of $\sim4$ kpc, and flatter polarized fluxes than total fluxes. The extension of the B-field permeating the circumgalactic medium increases with increasing the star formation rate.
description: 21 pages, 14 figures, 4 tables. Submitted to ApJ with positive review by the anonymous referee. Comments are welcome
Pharmacist's Perception of Brand Equity in the Case of Lagap Pharmaceutical
Creators: name: Gizachew, Urael
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: The objective of this research paper is to examine the applicability of the Aaker model of brand equity in pharmacist's perception towards Lagap pharmaceutical was analyzed. The most common and widely used conceptual framework of Aaker was used. A quantitative research design was applied to research the causal relationship of the brand equity measurement dimensions to that of overall brand equity. A simple random sampling technique was conducted to contact the sample respondents. Applying a structured questionnaire written in English was distributed to 270 peoples. The analysis was performed using descriptive and inferential statistics by using SPSS version 20 software. The finding shows that CBBE model can be applied in the business to business pharmaceutical retail sector as well. Perceived quality, Brand awareness and Brand loyalty were found to be positively and significantly affecting overall brand equity as they were hypothesized. But Brand association shows less significant with the overall brand equity and the hypothesis was not supported. Brand equity is inevitable in these sector therefore, Lagap pharmaceutical and agents in this sector must involve in high promotional activities by majorly focusing on the four independent variables of the Aaker model to increase the overall brand equity of Lagap pharmaceutical.
Extending vision : mapping space in light and time
Creators: name: Spear., Felicity
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Flavor physics induced by light $Z'$ from SO(10) GUT
Creators: name: Hisano, Junji
name: Muramatsu, Yu
name: Omura, Yuji
name: Shigekami, Yoshihiro
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In this paper, we investigate predictions of the SO(10) Grand Unified Theory (GUT), where an extra U(1)$^\prime$ gauge symmetry remains up to the supersymmetry (SUSY) breaking scale. The minimal setup of SO(10) GUT unifies quarks and leptons into a ${\bf 16}$-representational field in each generations. The setup, however, suffers from the realization of the realistic Yukawa couplings at the electroweak scale. In order to solve this problem, we introduce ${\bf 10}$-representational matter fields, and then the two kinds of matter fields mix with each other at the SUSY breaking scale, where the extra U(1)$^\prime$ gauge symmetry breaks down radiatively. One crucial prediction is that the Standard Model quarks and leptons are given by the linear combinations of the fields with two different U(1)$^\prime$ charges. The mixing also depends on the flavor. Consequently, the U(1)$^\prime$ interaction becomes flavor violating, and the flavor physics is the smoking-gun signal of our GUT model. The flavor violating $Z'$ couplings are related to the fermion masses and the CKM matrix, so that we can derive some explicit predictions in flavor physics. We especially discuss $K$-$\overline{K}$ mixing, $B_{(s)}$-$\overline{B_{(s)}}$ mixing, and the (semi)leptonic decays of $K$ and $B$ in our model. We also study the flavor violating $μ$ and $τ$ decays and discuss the correlations among the physical observables in this SO(10) GUT framework.
description: 30 pages, 20 figures, v2 : texts are improved, comments and references are added
Statistically driven decision making in football through the use of reinforcement learning, random utility models, and parametric modeling
Creators: name: Biro, Preston
Publisher: name: The University of Texas at Austin
Year: 2022
Subjects: Football
Decision theory
Reinforcement learning
Random utility models
Parametric modeling
Skew-t
Generalized gamma
Play calling

description: Decision making under conditions of uncertainty is inherently a difficult task. The use of data can alleviate this difficulty by informing the decision maker of past results, but often raw data can still mislead if not properly put into context. Additionally, long-term optimal behavior does not always align with short-term needs, and thus even a well-tailored algorithm can provide undesirable results. The game of football provides a unique avenue for application due to the structure of the game and increasing levels of data availability. Through the use of reinforcement learning and random utility models, statistically optimal decisions can be identified under a variety of utility mindsets. Parametric models properly representing the data generating process can also provide insight on the underlying information. Using football play-by-play data from the NFL and college level (specifically for the Presbyterian College Fall 2021 team), a system of algorithms is designed to assist with the task of play calling. These algorithms rely on the uncovering of the underlying utility of states in the game, which themselves can provide additional information on how to increase efficiency.
Do Shocks and Environmental Factors Shape Personality Traits? Evidence from the Ultra-Poor in Uganda
Creators: name: Mehra, Shikhar
name: Stopnitzki, Yaniv
name: Alloush, Mo
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Computational Biology

description: Personality characteristics and non-cognitive skills are key determinants of decision-making and economic outcomes. While personality is commonly believed to be stable after age 30, evidence suggests that significant changes in occupational or social roles, or exposure to family or health shocks, can have effects on personality traits. In this paper, we study the short-term effects of two kinds of shocks on measured personality traits among young adults from ultra-poor households in Uganda. In particular, we examine the short-term impacts of (i) a randomized anti-poverty program and (ii) environmental changes—exposure to drought, high temperatures, and wind—on personality traits. We find significant differences in measured personality traits across these factors, in particular among food insecure individuals. These results suggest that economic shocks and environmental factors may have an effect on the non-cognitive skills among young ultra-poor adults. On the other hand, our results also suggest that caution is warranted when using these tools used to measure personality traits in such rural, low-income settings.
Improved Direct Measurement of Leptonic Coupling Asymmetries with Polarized Z Bosons
Creators: name: Abe, Kenji
name: Abe, Koya
name: Abe, T.
name: Adam, I.
name: Akimoto, H.
name: Aston, D.
name: Baird, K. G.
name: Baltay, C.
name: Band, H. R.
name: Barklow, L.
name: Bauer, J. M.
name: Bellodi, G.
name: Berger, R.
name: Blaylock, G.
name: Bogart, J. R.
Publisher: name: The American Physical Society
Year: 2001
Subjects: subject: 530

description: Physical Review Letters
360 degree self-portrait : connecting multiple bodies
Creators: name: Rrap., Julie
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Properties of star formation of the Large Magellanic Cloud as probed by young stellar objects
Creators: name: Kokusho, Takuma
name: Torii, Hiroki
name: Kaneda, Hidehiro
name: Fukui, Yasuo
name: Tachihara, Kengo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We perform a systematic study of evolutionary stages and stellar masses of young stellar objects (YSOs) in the Large Magellanic Cloud (LMC) to investigate properties of star formation of the galaxy. There are 4825 sources in our YSO sample, which are constructed by combining the previous studies identifying YSOs in the LMC. Spectral energy distributions of the YSOs from optical to infrared wavelengths were fitted with a model consisting of stellar, polycyclic aromatic hydrocarbon and dust emissions. We utilize the stellar-to-dust luminosity ratios thus derived to study the evolutionary stages of the sources; younger YSOs are expected to show lower stellar-to-dust luminosity ratios. We find that most of the YSOs are associated with the interstellar gas across the galaxy, which are younger with more gases, suggesting that more recent star formation is associated with larger amounts of the interstellar medium (ISM). N157 shows a hint of higher stellar-to-dust luminosity ratios between active star-forming regions in the LMC, suggesting that recent star formation in N157 is possibly in later evolutionary stages. We also find that the stellar mass function tends to be bottom-heavy in supergiant shells (SGSs), indicating that gas compression by SGSs may be ineffective in compressing the ISM enough to trigger massive star formation. There is no significant difference in the stellar mass function between YSOs likely associated with the interface between colliding SGSs and those with a single SGS, suggesting that gas compression by collisions between SGSs may also be ineffective for massive star formation.
description: 26 pages, 16 figures, accepted for publication in ApJ
Crusade for conformity : the Ku Klux Klan in Texas, 1920-1927
Creators: name: Alexander, Charles C.
Publisher: name: The University of Texas at Austin
Year: 1959
Subjects: subject: Ku Klux Klan history
subject: Texas Ku Klux Klan
subject: 20th century Ku Klux Klan
subject: KKK history
subject: KKK Texas history
subject: Texas fraternal organizations
subject: Texas politics and government
subject: 20th century Texas politics
subject: Ku Klux Klan Realm of Texas
subject: Texas secret fraternal orders
subject: Social conformity
subject: Moral authoritarianism
subject: Ku Klux Klan (1915- )--Realm of Texas--History--20th century
subject: Ku Klux Klan (1915- )--History--20th century
subject: Fraternal organizations--Texas--History--20th century
subject: Texas--Politics and government--History--20th century

description: Historians have generally neglected the momentous folk movement of the 1920's embodied in the secret fraternal order known as the Knights of the Ku Klux Klan. This is surprising, for the Klan at its peak listed more members than organized labor, and its giant administrative structure, called the Invisible Empire, reached into every state of the Union. The career of the order, though relatively brief, was meteoric. It became a multimillion dollar financial organization, and the pecuniary benefits of Klan officialdom were prodigious. The Klan dominated local governments, state legislatures, and sometimes sent its favorites to the United States Congress. It dictated social conformity and won the patronage and approval of many Protestant ministers. It divided communities and families, and in several instances the presence of the Klan led to unprecedented hatred, strife, and social chaos. In no state, with the possible exception of Indiana, could the Klan elicit more respect and exert more force than in Texas, which was one of the initial states of Klan prominence. Writers of Texas history have either treated the order superficially or ignored it completely. Thus for years there has been a severe need for a thorough study of the Klan's career in the state. This work represents an attempt at such a study. The contention advanced is that the chief impetus for the spread of the Klan into Texas was not a nativistic impulse, as in the eastern states, but instead a yearning for some force to correct the undesirable features of a rapidly urbanizing society--a desire for social regulation. The Klan period in the state therefore becomes an adventure in moral authoritarianism and politics.
Steady states of two-dimensional granular systems are unique, stable, and sometimes satisfy detailed balance
Creators: name: Myhill, Alex D. C.
name: Blumenfeld, Raphael
Publisher: name: arXiv
Year: 2023
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Mathematical Physics (math-ph)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: Understanding the structural evolution of granular systems is a long-standing problem. A recently proposed theory for such dynamics in two dimensions predicts that steady states of very dense systems satisfy detailed-balance. We analyse analytically and numerically the steady states of this theory in systems of arbitrary density and report the following. 1. We discover that all such dynamics almost certainly possess only one physical steady state, which may or may not satisfy detailed balance. 2. We show rigorously that, if a detailed balance solution is possible then it is unique. The above two results correct an erroneous conjecture in the literature. 3. We show rigorously that the detailed-balance solutions in very dense systems are globally stable, extending the local stability found for these solutions in the literature. 4. In view of recent experimental observations of robust detailed balance steady states in very dilute cyclically sheared systems, our results point to a self-organisation of process rates in dynamic granular systems.
description: 6 pages, 3 figures, supplemental material. To appear in Journal of Physics A: Mathematical and Theoretical
Real-time Error Control for Surgical Simulation
Creators: name: Bui, Huu Phuoc
name: Tomar, Satyendra
name: Courtecuisse, Hadrien
name: Cotin, Stéphane
name: Bordas, Stéphane
Publisher: name: arXiv
Year: 2016
Subjects: subject: Numerical Analysis (math.NA)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Objective: To present the first real-time a posteriori error-driven adaptive finite element approach for real-time simulation and to demonstrate the method on a needle insertion problem. Methods: We use corotational elasticity and a frictional needle/tissue interaction model. The problem is solved using finite elements within SOFA. The refinement strategy relies upon a hexahedron-based finite element method, combined with a posteriori error estimation driven local $h$-refinement, for simulating soft tissue deformation. Results: We control the local and global error level in the mechanical fields (e.g. displacement or stresses) during the simulation. We show the convergence of the algorithm on academic examples, and demonstrate its practical usability on a percutaneous procedure involving needle insertion in a liver. For the latter case, we compare the force displacement curves obtained from the proposed adaptive algorithm with that obtained from a uniform refinement approach. Conclusions: Error control guarantees that a tolerable error level is not exceeded during the simulations. Local mesh refinement accelerates simulations. Significance: Our work provides a first step to discriminate between discretization error and modeling error by providing a robust quantification of discretization error during simulations.
description: 12 pages, 16 figures, change of the title, submitted to IEEE TBME
What harm could it do? highlighting Harm by Design
Creators: name: Riddell, Elizabeth Tiann
Publisher: name: The University of Texas at Austin
Year: 2023
Subjects: Design for good
Design for social justice
Design ethics
Social impact design
Experience design
Curriculum design
Design pedagogy

description: Designers often promote the power of design to “do good.” Books like David Berman’s Do Good Design, and documentaries like Netflix’s Abstract highlight all of the socially good, innovative, and creative work that design has influenced. While design has the potential to do good, it also has the potential to do harm. From the products we use every day to the systems that govern our lives, design plays a powerful role in shaping our world. But too often, design is used to reinforce harmful biases, perpetuate inequality, and even endanger lives. Both professionals and educators in the field of design have historically shied away from talking about the power design has to do harm. As a result, in professional practice, many designers lack awareness of the harmful impacts design can have, and do not have the knowledge, support, and infrastructure they need to practice “design for good.” Although professional organizations such as IDSA, AIGA, and the International Council of Design publish codes of ethics, they are not well-known nor enforceable, and standard professional workflows seldom involve evaluating the ethics of projects in relation to those codes of ethics. In this thesis, I have focused on identifying and acknowledging the many different kinds of harm even the “best” designs can do. I’ve designed a grid that encourages designers and design students to systematically think through the kinds of harm their design might potentially do. The “Harm by Design” grid can be used in multiple ways—as an analytical, collaborative, generative, critical, or evaluative tool—but its primary purpose is to help designers predict, reflect on, and reduce unintended harms.
Is the diagonal case a general picture for Loop Quantum Cosmology?
Creators: name: Bruno, Matteo
name: Montani, Giovanni
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The correct implementation of the Loop Quantum Gravity to the early homogeneous Universe has been the subject of a long debate in the literature because the SU(2) symmetry cannot be properly retained. The role of this symmetry is expressed by the Gauss constraint. Here, a non-vanishing Gauss constraint is found. However, we show that using suitable variables, it can be recast into three Abelian constraints, justifying the absence of such a symmetry in Loop Quantum Cosmology.
description: 6 pages
The Impact of Managerial Self-Interest on Corporate Capital Structure: (A Case of Selected Companies in Addis Ababa, Ethiopia)
Creators: name: Leykun, Fentahun
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2011

description: The literature on the impact of managerial self-interest on capital structure has already been developed in developed markets that have different institutional financing arrangements from those in emerging markets. Therefore this requires a thorough examination of the impact of managerial self-interest on corporate capital structure in developing market. In addition, the study so far has been conducted on listed firms with different proxies of managerial self-interest as indicators of capital structure. This thesis deals with the impact of managerial self-interest on corporate capital structure of eight selected companies in Addis Ababa. The study has examined the impact of managerial self-interest on corporate capital structure using both qualitative and quantitative methods of inquiry. Mainly the study focuses on the questionnaires analysis so as to see the representative proxies of managerial self-interest such as, board independence, managerial shareholding and institutional shareholding, on firms" capital structure decision. In addition, performance, risk, company size and tangibility of assets were regressed using ordinary least square (OLS) as a supportive variable in order to compromise the possible deficiencies that might appear in questionnaire analysis. In its main finding the result shows the inverse relationship between managerial shareholding and capital structure in case of banks and manufacturing companies, and relatively positive relationship in case of insurance companies under consideration. This is possibly because of the presence of principal shareholders and management"s attitude towards maximizing the company"s profit and obtaining tax benefits for employing long term debt
The truth about the art of keeping mum : a studio project on the grotesque and confessional mode in art
Creators: name: Ropponen., Jonas Simon
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Application of Euler-Bernoulli finite element methods for torque and drag model verification
Creators: name: Elyas, Odai Alaa
Publisher: name: The University of Texas at Austin
Year: 2022
Subjects: Torque
Drag
Euler-Bernoulli
Finite
Elements
Soft
Stiff
Beam
Bars
Space
Frame

description: As the industry extends its search for hydrocarbons in remote locations, efficient extended reach drilling operations become crucial to reaching subsurface targets. This starts with enhanced simulation and monitoring of real time data measurements. Torque and drag are two of the most important parameters that are monitored continuously throughout any oil and gas drilling operations. Where torque is defined as the force of rotation between the drill pipe and the wellbore wall and drag is defined as the force required to push or pull the drill pipe through the wellbore and formations. The two parameters are often used as indicators for downhole conditions and must be maintained within certain ranges to ensure successful drilling to the targeted depths and running in hole the required completion equipment. Prior to any drilling operation, an estimate of both torque and drag are calculated based on the known drilling fluid properties, and formation parameters. Which is then used as an indicator of drilling issues such as wellbore collapse, cuttings accumulation, and change in drilling fluid properties. Several analytical models are utilized for torque and drag calculation. The first, and widely used approach is the soft string model which assumes the drill pipe acts as soft string taking the shape of the wellbore. This assumption neglects additional forces that cause the drill pipe to bend in deviated locations, which often results in underestimating torque and drag measurements in complex well designs. To address this, a stiff string model was implemented which considers the pipe’s bending stiffness and its effects on torque and drag calculations. Additionally, finite elements analysis (FEA) has been implemented to validate torque and drag calculations throughout the industry. However, the application of FEA often includes mesh generations which creates a 3D model of the drill pipe and subdivides the object into smaller domains to perform the calculations across the entire volume. This approach typically requires special software or large computational power to perform the calculations in a timely manner for real time monitoring applications. This thesis presents an approach to FEA that utilizes the Euler-Bernoulli beam equations, with the addition of an axial forces component to address both axial and transverse forces and deformations. The outcome of this thesis provides an accurate representation of torque and drag calculations, performed efficiently which could be used for planning, and real time monitoring during drilling operations.
D5.4 - First Progress Report on Dissemination Activities
Creators: name: EU-PolarNet 2 Consortium
name: Degen, Renate
name: Schöner, Wolfgang
Publisher: name: Zenodo
Year: 2022

description: The first Progress Report on Dissemination activities (Deliverable 5.4) of EU-PolarNet 2 – due on October 31, 2021 – was compiled by UNIVIE/APRI with the support of all EU-PolarNet 2 partners. It comprises all dissemination activities of EU-PolarNet 2 in it's first year, from project kick-off in October 2020 until October 31, 2021. The content covers dissemination activities at conferences and events (section 2), webinars (section 3), online outreach via the webpage, newsletter, and social media channels (section 4), and the communication pack (section 5). More detailed information about events, along screenshots and images can be found in the Annex (section 6).
The Reserve
Creators: name: Ramsay., Lehan Winifred
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Superrotation Charge and Supertranslation Hair on Black Holes
Creators: name: Hawking, Stephen W.
name: Perry, Malcolm J.
name: Strominger, Andrew
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It is shown that black hole spacetimes in classical Einstein gravity are characterized by, in addition to their ADM mass $M$, momentum $\vec P$, angular momentum $\vec J$ and boost charge $\vec K$, an infinite head of supertranslation hair. The distinct black holes are distinguished by classical superrotation charges measured at infinity. Solutions with supertranslation hair are diffeomorphic to the Schwarzschild spacetime, but the diffeomorphisms are part of the BMS subgroup and act nontrivially on the physical phase space. It is shown that a black hole can be supertranslated by throwing in an asymmetric shock wave. A leading-order Bondi-gauge expression is derived for the linearized horizon supertranslation charge and shown to generate, via the Dirac bracket, supertranslations on the linearized phase space of gravitational excitations of the horizon. The considerations of this paper are largely classical augmented by comments on their implications for the quantum theory.
description: 42 pages
Objects of empathy : understanding anorexia through design
Creators: name: Duran Garibi, Rosana
Publisher: name: The University of Texas at Austin
Year: 2023
Subjects: Anorexia nervosa
Discursive design
Graphic design
Design for health
Experience design
Co-design
Design as a tool for healing

description: Anorexia nervosa is surrounded by stigma and misinformation. Research shows strong support networks provide long-term support that improves the chances of recovery and reduces the odds of relapsing. However, love is not enough; knowledge is essential. As a graphic designer, I am well-versed in using images and text to communicate information clearly and persuade audiences to act. I undertook the MFA in design to extend my reach as a designer and communicator by bolstering my research, product development, and 3D design skills, and I used all three to develop a series of provocative objects intended to facilitate more and better communication between those experiencing anorexia and their partners, family, friends, and healthcare providers. My discursive design interventions—a table runner, two plates, and a cutlery set—use familiar utensils from mealtime rituals to explain how food intake relates to cognitive shifts in the brain of someone with anorexia and to highlight myths about anorexia that often deter people from identifying, communicating about, and seeking treatment for anorexia. These designs are intended to help cultivate empathy, understanding, and open conversation among partners, children, parents, friends, and even health providers who may not know how best to support people with anorexia in their journey toward recovery. The provocative and, at times, wryly humorous objects I designed are meant to give non-anorexic people an entry point for talking about the internal and external conflicts that people with anorexia face at the dinner table in hopes that talking about these challenges will help facilitate better mealtime experiences both for people with anorexia and those who support them.
A detailed look at the thermal and non-thermal X-ray emission from the Vela supernova remnant with SRG/eROSITA
Creators: name: Mayer, Martin G. F.
name: Becker, Werner
name: Predehl, Peter
name: Sasaki, Manami
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Aims. Our goal is the characterization of the hot ejecta and shocked interstellar medium (ISM) associated to the Vela supernova remnant (SNR), as well as the relativistic electrons injected into the ambient medium by its central pulsar. To achieve this, we analyze the X-ray data set of Vela acquired by SRG/eROSITA during its first four all-sky surveys. Methods. Apart from multi-band imaging, a quantitative view of the physical parameters affecting the observed thermal and non-thermal emission is obtained by performing spatially resolved X-ray spectroscopy of over 500 independent regions using multi-component spectral models. Results. Imaging demonstrates that the X-ray emission of the Vela SNR consists of at least three morphologically distinct components, with shell-like structures dominating below 0.6 keV, radial outward-directed features becoming apparent at medium energies, and the pulsar wind nebula (PWN) dominating the hard emission above 1.4 keV. Our spectroscopy reveals a highly structured distribution of X-ray absorption column densities, which intriguingly appears anticorrelated with optical extinction measurements. We find evidence for multiple ejecta clumps inside and outside the shell, within which we find a strongly supersolar concentration of neon and magnesium relative to oxygen. This includes the bright shrapnel D, in which we separate shocked ISM in the soft bow-shock from a hot, ejecta-rich clump at its apex, based on the new data. Finally, we find an extremely extended, smoothly decreasing distribution of synchrotron emission from the PWN, which extends up to 14 pc from the pulsar, with a total X-ray luminosity of $1.5\times10^{-3}$ of the pulsar's spin-down power. The extended emission likely traces a relativistic electron population in an ISM-level magnetic field, which requires the existence of a TeV counterpart powered by inverse Compton radiation.
description: 24+3 pages, 13+4 figures, accepted for publication in Astronomy & Astrophysics; Abstract abridged
MPEC 2024-R05 : DAILY ORBIT UPDATE (2024 September 1)
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Determinants of Investment Behavior of Ethiopian Banking Employees Towards Selected Investment Avenues
Creators: name: Damtew, Solomon
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2015

description: nvestment is an activity that is engaged in by people who have savings i.e. investments are made from savings, or in other words people invest their savings. A variety of investment options are available such as bank, Real estate, Shares/Equities, Government Bond, Life Insurance & so on. Investors are investing their money with the different objectives such as profit, security, appreciation, Income stability, Future goals or desires, social responsibility. The decision of individual investors towards different investment avenues is influenced by demographic, social and Psychological factors. The study examined determinants of Ethiopian banking employee's investment behavior towards selected investment avenues. The objective is to examine banking employees' behavior towards five investment avenues: Bank Deposit, Shares/Equities, Real estate, Government Bond and Life insurance. The study was adopted quantitative reaserch approach in order to draw the relationship between factors affecting individual investment decisions and choice of investment avenues. The study selected a sample of 385 banking employees based on stratified simple random sampling for both public and private banks.. The study is based on primary sources of data which are collected by distribution of a close ended, self administered questionnaire. The data has been analyzed using percentage, chi-square test, Person Correlation Coefficient, Mann- Whitney U test, Kruskal – Wallis test and two sample T test, and correlation with the help of statistical software (SPSS 20). The study found that the choice of investment avenues by bank employees are significantly influenced by age, Gender, marital status, family size, investment objective, risk and return level of investment, moral satisfaction, religion, culture and desire and goals. Key Terms: Investment Avenues, Behavioral Finance, Banking employees
Investigating overtaking collisions of solitary waves in the Schamel equation
Creators: name: Flamarion, Marcelo V.
name: Pelinovsky, Efim
name: Didenkulova, Ekaterina
Publisher: name: arXiv
Year: 2023
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: This article presents a numerical investigation of overtaking collisions between two solitary waves in the context of the Schamel equation. Our study reveals different regimes characterized by the behavior of the wave interactions. In certain regimes, the collisions maintain two well-separated crests consistently over time, while in other regimes, the number of local maxima undergoes variations following the patterns of $2\rightarrow 1\rightarrow 2\rightarrow 1\rightarrow 2$ or $2\rightarrow 1\rightarrow 2$. These findings demonstrate that the geometric Lax-categorization observed in the Korteweg-de Vries equation (KdV) for two-soliton collisions remains applicable to the Schamel equation. However, in contrast to the KdV, we demonstrate that an algebraic Lax-categorization based on the ratio of the initial solitary wave amplitudes is not feasible for the Schamel equation. Additionally, we show that the statistical moments for two-solitary wave collisions are qualitatively similar to the KdV equation and the phase shifts after soliton interactions are close to ones in integrable KdV and modified KdV models.
Growth mindset in community colleges : a review of the literature
Creators: name: Delboy, Emilio
name: 0009-0001-2623-5372
Publisher: name: The University of Texas at Austin
Year: 2023
Subjects: Community colleges
Growth mindset
Interventions

description: Community colleges play a key role in American higher education, educating a disproportionate percentage of low-income and racially minoritized students. At the K-12 and four-year university level, there is some evidence that growth mindset, the idea abilities can be developed through hard work, is correlated with various measures of student success. Further, there is evidence that interventions that increase growth mindset can improve student outcomes, particularly for low-achieving students. In this report, I identify and review the literature focused on growth mindset and community colleges and find that while both students and faculty generally believe that growth mindset is an important component of academic success, the evidence on whether growth mindset is correlated with measurable academic achievement and of the efficacy of mindset interventions is mixed. I conclude with recommendations to help guide future research and practice related to growth mindset at the community college level.
A studio investigation into the theatricality and performative aspects of the child subject in photography
Creators: name: Papapetrou., Polixeni
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Analysis of SEP events and their possible precursors based on the GSEP Catalog
Creators: name: Rotti, Sumanth A.
name: Martens, Petrus C.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Solar energetic particle (SEP) events are one of the most crucial aspects of space weather. Their prediction depends on various factors including the source solar eruptions such as flares and coronal mass ejections (CMEs). The Geostationary Solar Energetic Particle (GSEP) Events catalog was developed as an extensive data set towards this effort for solar cycles 22, 23 and 24. In the present work, we review and extend the GSEP data set by; (1) adding "weak" SEP events that have proton enhancements from 0.5 to 10 pfu in the E>10 MeV channel, and (2) improving the associated solar source eruptions information. We analyze and discuss spatio-temporal properties such as flare magnitudes, locations, rise times, and speed and width of CMEs. We check for the correlation of these parameters with peak proton fluxes and event fluences. Our study also focuses on understanding feature importance towards the optimal performance of machine learning (ML) models for SEP event forecasting. We implement random forest (RF), extreme gradient boosting (XGBoost), logistic regression (LR) and support vector machines (SVM) classifiers in a binary classification schema. Based on the evaluation of our best models, we find both the flare and CME parameters are requisites to predict the occurrence of an SEP event. This work is a foundation for our further efforts on SEP event forecasting using robust ML methods.
Rôle de la Gouvernance des projets de Transformation Digitale dans l'amélioration de la Performance des organisations publiques : Perception des usagers
Creators: name: KADDARA Nabaouia
name: KARIMI Dounia
Publisher: name: Zenodo
Year: 2024

description: A l'ère du digital, les organisations publiques tendent à dématérialiser leurs relations avec les citoyens et à moderniser leurs services, en s’engageant dans des projets de numérisation de leurs processus et de dématérialisation des services offerts. De ce fait ces dites organisations s'engagent davantage dans des projets de Transformation Digitale afin d'améliorer la qualité de service dans le secteur public.

Afin d’atteindre cette finalité, les organisations publiques font appel à la gouvernance de projet pour garantir une utilisation efficiente des ressources publiques et une efficacité dans la réalisation des objectifs des politiques publiques.

Cette recherche vise à explorer le rôle de la gouvernance des projets de Transformation Digitale dans l'amélioration de la performance des organisations publiques, précisément en termes de satisfaction de la principale partie prenante des dits projets à savoir les usagers des services publics.

Pour ce faire, nous procéderons en premier lieu à une revue de littérature que nous compléterons par la suite par une étude exploratoire dans le contexte marocain, à travers une enquête par questionnaire destiné à un échantillon d'usagers des services publics, afin de mettre en exergue le rôle de la gouvernance des projets de transformation digitale dans l'amélioration de la performance des organisations publiques en termes d'efficacité, et de qualité de service.