cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Evidence of Viscoelastic Deformation and Slow Stress Waves from Time-Series Extensometer Data Within Mine Shaft
Creators: name: Kalyvas, Jordan
Publisher: name: RMIT University
Year: 2025
Subjects: classificationCode: 400502
subject: Civil geotechnical engineering

description: Degradation and damage have been observed in the lining of a copper mine shaft in Mt. Isa dating
back to 1980. The ongoing damage has been attributed to the stress redistribution from the
excavation of stopes and two major intersecting faults. Along with repairs, structural monitoring tools
were installed on the mine shaft infrastructure including the elevator guide rails and the shaft lining.
Extensometers have been installed into the concrete lining and surrounding rock mass of the mine
shaft. The extensometers are measuring radial deformation of the shaft by extending and contracting
one-dimensionally with the lining. There are six extensometers installed into the shaft lining at one
particular level. An FEM alongside, rheological, and geometrical stress and strain analysis are
developed to predict the monitored displacements including the influence of rock mass, the faults,
the mined stopes, and the steel reinforced concrete lining of the mine shaft. The amplitude,
wavelength and frequency of the observed transient stresses give a unique insight into the progressive
redistribution of stress around underground infrastructure during mining. The FEMs are used to
identify possible sources of the observed signals based on the magnitude of the displacement. The
displacement pattern can be modelled as comprising circular, elliptical and translational components.
The elliptical flattening direction indicates a consistent north-south compression in most events
analysed. The extensometers show that strain is built up and released over time. Periods of strain
build up and relaxation are denoted “events”. Individual extensometers show readings of extension
during events up to 15mm. Events are observed to happen from minutes to hours. The FEM analysis
presented determined the possible source of the events identified as the closure of the faults near to
the mine shaft, the sliding of rock mass around the faults. Extensometer data provide evidence that
viscoelastic behaviour and dissipation of stress have occurred within the surrounding rock mass. Major
intersecting faults and various backfilled stopes are proposed to exhibit dashpot rheology. A slow
stress wave is proposed to account for the observed build up and release in strain.
Random Matrix Spectral Form Factor in Kicked Interacting Fermionic Chains
Creators: name: Roy, Dibyendu
name: Prosen, Tomaž
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study quantum chaos and spectral correlations in periodically driven (Floquet) fermionic chains with long-range two-particle interactions, in the presence and absence of particle number conservation ($U(1)$) symmetry. We analytically show that the spectral form factor precisely follows the prediction of random matrix theory in the regime of long chains, and for timescales that exceed the so-called Thouless/Ehrenfest time which scales with the size $L$ as ${\cal O}(L^2)$, or ${\cal O}(L^0)$, in the presence, or absence of $U(1)$ symmetry, respectively. Using random phase assumption which essentially requires long-range nature of interaction, we demonstrate that the Thouless time scaling is equivalent to the behavior of the spectral gap of a classical Markov chain, which is in the continuous-time (Trotter) limit generated, respectively, by a gapless $XXX$, or gapped $XXZ$, spin-1/2 chain Hamiltonian.
description: 6 pages, 1 figure
Quantum driven Bounce of the future Universe
Creators: name: Srivastava, S. K.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It is demonstrated that due to back-reaction of quantum effects, expansion of the universe stops at its maximum and takes a turnaround. Later on, it contracts to a very small size in finite future time. This phenomenon is followed by a " bounce" with re-birth of an exponentially expanding non-singular universe.
Estudo das Relações Laticínios - Pequenos Produtores na Região de Juiz de Fora
Creators: name: De Almeida Bicalho, Renata
name: Da Silva Machado, Marcia Cristina
name: Paco-Cunha, Elcemir
name: De Almeida Bicalho, Renata
name: Da Silva Machado, Marcia Cristina
name: Paco-Cunha, Elcemir
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Livestock Production/Industries
subject: associação
subject: leite
subject: pequeno produtor
subject: laticínio
subject: association
subject: milk
subject: small producer

description: O presente trabalho tem por objetivo analisar a relação pequeno produtor–laticínio, com base na existência de um intermediário, a associação. Para tal buscou-se apreender quanto à formação e o desenvolvimento de uma associação, bem como contextualizar o aparecimento deste tipo organizacional nacional e regionalmente. Visando tais apreciações, realizou-se uma pesquisa qualitativa, a partir das técnicas de entrevista, dados secundários e visitas. Os resultados apurados envolvem a importância do laticínio parceiro para a manutenção da associação, o valor da ação do presidente para a formação e consolidação da mesma e uma possível aliança laticínio-associação na nova empreitada rumo ao cooperativismo com foco no beneficiamento do leite. The present paper has for objective to analyze the relation between small producer and dairy products, based on the existence of an intermediary, the association. For such one intend to apprehend how much to the formation and the development of an association, as well as demarcate the appearance of this type of organization, national and regionally. Aiming at such appreciations, a qualitative research was become fullfilled, from the techniques of interview, secondary data and visits. The refined results involve the importance of the dairy products partner for the maintenance of the association, the value of the action of the president for the formation and consolidation of same and a possible alliance dairy products-association in the new taken over on a contract basis route to the co-operation with focus in the improvement of milk.
Subproducts of small residue classes
Creators: name: Martin, Greg
name: Parvardi, Amir
Publisher: name: arXiv
Year: 2020
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11A07, 11L40

description: For any prime $p$, let $y(p)$ denote the smallest integer $y$ such that every reduced residue class $\pmod p$ is represented by the product of some subset of $\{1,\dots,y\}$. It is easy to see that $y(p)$ is at least as large as the smallest quadratic nonresidue $\pmod p$; we prove that $y(p) \ll_\varepsilon p^{1/(4 \sqrt e)+\varepsilon}$, thus strengthening Burgess's classical result. This result is of intermediate strength between two other results, namely Burthe's proof that the multiplicative group $\pmod p$ is generated by the integers up to $O_\varepsilon(p^{1/(4 \sqrt e)+\varepsilon}$, and Munsch and Shparlinski's result that every reduced residue class $\pmod p$ is represented by the product of some subset of the primes up to $O_\varepsilon(p^{1/(4 \sqrt e)+\varepsilon}$. Unlike the latter result, our proof is elementary and similar in structure to Burgess's proof for the least quadratic nonresidue.
description: 7 pages
Pigs in Cyberspace: A Natural Experiment Testing Differences between Online and Offline Club-Pig Auctions
Creators: name: Roe, Brian E.
name: Wyszynski, Timothy E.
name: Roe, Brian E.
name: Wyszynski, Timothy E.
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agribusiness
subject: Industrial Organization
subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: auctions
subject: electronic commerce
subject: two-sided markets
subject: livestock marketing
subject: hedonic models

description: We find sale prices and net revenues received by sellers in the Midwestern club pig market are higher at traditional face-to-face auctions than at comparable Internet auctions. The comparison overcomes adverse selection issues that commonly plague such analyses by using data from sellers that allocated pigs to both markets based solely on exogenous differences in dates between online and offline auctions. Furthermore, both auctions feature ascending price formats with ‘soft-endings’ and remaining quality variation is controlled by using detailed information on animal, seller and event characteristics. The results suggest that the higher prices and net revenues from traditional auctions are attributable to remaining differences in auction format and buyer pools. Furthermore, sellers may be willing to forgo higher revenues to capture the convenience and flexibility provided by Internet auctions, to reach buyers in other regions that face different seasonality in demand and to stimulate demand for privately negotiated sales.
Pairing of bosons in the condensed state of the boson-fermion model
Creators: name: Alexandrov, A. S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A two component model of negative U centers coupled with the Fermi sea of itinerant fermions is discussed in connection with high-temperature superconductivity of cuprates, and superfluidity of atomic fermions. We examine the phase transition and the condensed state of this boson-fermion model (BFM) beyond the ordinary mean-field approximation in two and three dimensions. No pairing of fermions and no condensation are found in two-dimensions for any symmetry of the order parameter. The expansion in the strength of the order parameter near the transition yields no linear homogeneous term in the Ginzburg-Landau-Gor'kov equation and a zero upper critical field in any-dimensional BFM, which indicates that previous mean-field discussions of the model are flawed. Normal and anomalous Green's functions are obtained diagrammatically and analytically in the condensed state of a simplest version of 3D BFM. A pairing of bosons analogous to the Cooper pairing of fermions is found. There are three coupled condensates in the model, described by the off-diagonal single-particle boson, pair-fermion and pair-boson fields. These results negate the common wisdom that the boson-fermion model is adequately described by the BCS theory at weak coupling.
description: 7 pages, 4 figures
Distributional Effects of CAP Subsidies: Micro Evidence from the EU
Creators: name: Michalek, Jerzy
name: Ciaian, Pavel
name: Kancs, D'Artis
name: Gomez Y Paloma, Sergio
name: Michalek, Jerzy
name: Ciaian, Pavel
name: Kancs, D'Artis
name: Gomez Y Paloma, Sergio
Publisher: name: Unknown
Year: 2011
Subjects: Agricultural and Food Policy
Agricultural Finance

description: In this paper we estimate the income distributional effects of the common agricultural policy (CAP) for farmers and landowners. First, we theoretically analyse the level of farmers' and landowners' gains from coupled and decoupled payments. Second, using a unique farm level panel data set from the FADN for the period 1995-2007 we employ the fixed effects, the Heckman selection bias and the GMM estimators to estimate income distributional effects of CAP subsidies. The results do not confirm the theoretical hypothesis that landowners benefit a large share of the CAP subsidies. According to our estimates, farmers gain between 60% to 95%, 80% to 178% and 86% to 90% of the total value of coupled crop/animal, coupled RDP and decupled payments, respectively. The CAP subsidies are only marginally capitalised in land rents. Our results suggest that rental rates are more responsive to structural variables and show a strong time dependency, suggesting the presence of rigidities in the EU rental markets, which constraint the adjustment of land rents to market signals and thus reduce landowners' gains from the CAP.
Global Branding: Issues and Challenges
Creators: name: Dalwadi, Riteshkumar
Publisher: name: International Institute of Marketing Professionals
Year: 2013

description: The purpose of this paper is to bring out understanding of global branding, trace the significance of global branding, to discuss challenges and issues pertaining to global branding. This paper also cites various examples of MNCs that reached the worldwide markets through global branding.
Triplet-Singlet Spin Relaxation via Nuclei in a Double Quantum Dot
Creators: name: Johnson, A. C.
name: Petta, J. R.
name: Taylor, J. M.
name: Yacoby, A.
name: Lukin, M. D.
name: Marcus, C. M.
name: Hanson, M. P.
name: Gossard, A. C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The spin of a confined electron, when oriented originally in some direction, will lose memory of that orientation after some time. Physical mechanisms leading to this relaxation of spin memory typically involve either coupling of the electron spin to its orbital motion or to nuclear spins. Relaxation of confined electron spin has been previously measured only for Zeeman or exchange split spin states, where spin-orbit effects dominate relaxation, while spin flips due to nuclei have been observed in optical spectroscopy studies. Using an isolated GaAs double quantum dot defined by electrostatic gates and direct time domain measurements, we investigate in detail spin relaxation for arbitrary splitting of spin states. Results demonstrate that electron spin flips are dominated by nuclear interactions and are slowed by several orders of magnitude when a magnetic field of a few millitesla is applied. These results have significant implications for spin-based information processing.
Geometric Solutions for General Actuator Routing on Inflated-Beam Soft Growing Robots
Creators: name: Blumenschein, Laura H
name: Koehler, Margaret
name: Usevitch, Nathan S.
name: Hawkes, Elliot W.
name: Rucker, D. Caleb
name: Okamura, Allison M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Continuum and soft robots can leverage complex actuator shapes to take on useful shapes while actuating only a few of their many degrees of freedom. Continuum robots that also grow increase the range of potential shapes that can be actuated and enable easier access to constrained environments. Existing models for describing the complex kinematics involved in general actuation of continuum robots rely on simulation or well-behaved stress-strain relationships, but the non-linear behavior of the thin-walled inflated-beams used in growing robots makes these techniques difficult to apply. Here we derive kinematic models of single, generally routed tendon paths on a soft pneumatic backbone of inextensible but flexible material from geometric relationships alone. This allows for forward modeling of the resulting shapes with only knowledge of the geometry of the system. We show that this model can accurately predict the shape of the whole robot body and how the model changes with actuation type. We also demonstrate the use of this kinematic model for inverse design, where actuator designs are found based on desired final robot shapes. We deploy these designed actuators on soft pneumatic growing robots to show the benefits of simultaneous growth and shape change.
description: 21 pages, 18 figures
Disaster Risk, Social Vulnerability and Economic Development
Creators: name: Ward, Patrick S.
name: Shively, Gerald E.
name: Ward, Patrick S.
name: Shively, Gerald E.
Publisher: name: Unknown
Year: 2011
Subjects: subject: International Development
subject: Political Economy
subject: Natural disasters
subject: climate change
subject: economic development
subject: vulnerability

description: We examine the extent to which economic development reduces both a country's disaster risk and its social vulnerability to climate-related disasters. Global climate change is expected to increase the frequency and intensity of extreme weather events, such as droughts, floods, and various types of storms. Moreover, the effects of these extreme weather events are expected to be borne disproportionately in areas of the world already challenged by underdevelopment. We find that the ability of economic development to reduce disaster risk depends on a country's income level; additional income becomes less effective in reducing disaster risk as countries become wealthier. We find that, conditional on a disaster occurring, higher incomes generally reduce a country's social vulnerability to such disasters. We additionally find that underlying political structures have an important influence over the human costs of disasters, with outcomes more favorable in democratic societies.
Enhancing Learning in the Classroom – One Click @ a Time
Creators: name: Nelson, A. Gene
name: Litzenberg, Kerry K.
name: Nelson, A. Gene
name: Litzenberg, Kerry K.
Publisher: name: Unknown
Year: 2011
Subjects: subject: Teaching/Communication/Extension/Profession
subject: teaching
subject: undergraduates
subject: millennials
subject: personal response systems
subject: clickers

description: The effectiveness of Personal Response System (PRS) technology, sometimes called clickers, in engaging millennial students in more active learning is evaluated using pre-use and post-use surveys in three undergraduate agricultural economics courses with a total of 300 students. A PRS allows students to respond to their instructor’s questions and receive immediate feedback. The expectations of millennial students are described, along with the reasons why faculty might be interested in this technology. The survey results encouraged the authors to continue to develop their skills in posing questions and evaluating student responses using clickers.
The Use of the Scattering Phase Shift in Resonance Physics
Creators: name: Nowakowski, M.
name: Kelkar, N. G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The scattering phase shift encodes a good amount of physical information which can be used to study resonances from scattering data. Among others, it can be used to calculate the continuum density of states and the collision time in a resonant process. Whereas the first information can be employed to examine the evolution of unstable states directly from scattering data, the second one serves as a tool to detect resonances and their properties. We demonstrate both methods concentrating in the latter case on 'exotic' resonances in pi-pi and pi-K scattering.
description: Talk given at the International Workshop PENTAQUARK04, July 20-23 at Spring-8, Japan (new references added)
Projected two- and three-point statistics: Forecasts and mitigation of non-linear RSDs
Creators: name: Leicht, Oliver
name: Baldauf, Tobias
name: Fergusson, James
name: Shellard, Paul
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The combination of two- and three-point clustering statistics of galaxies and the underlying matter distribution has the potential to break degeneracies between cosmological parameters and nuisance parameters and can lead to significantly tighter constraints on parameters describing the composition of the Universe and the dynamics of inflation. Here we investigate the relation between biases in the estimated parameters and inaccurate modelling of non-linear redshift-space distortions for the power spectrum and bispectrum of projected galaxy density fields and lensing convergence. Non-linear redshift-space distortions are one of the leading systematic uncertainties in galaxy clustering. Projections along the line of sight suppress radial modes and are thus allowing a trade-off between biases due to non-linear redshift-space distortions and statistical uncertainties. We investigate this bias-error trade-off for a CMASS-like survey with a varying number of redshift bins. Improved modelling of the non-linear redshift-space distortions allows the recovery of more radial information when controlling for biases. Not modelling non-linear redshift space distortions inflates error bars for almost all parameters by 20%. The information loss for the amplitude of local non-Gaussianities is smaller, since it is best constrained from large scales. In addition, we show empirically that one can recover more than 99% of the 3D power spectrum information if the depth of the tomographic bins is reduced to 10 $h^{-1}$Mpc.
description: 20 pages, 15 figures, 6 tables
A Study of the Prevalence of Depression among Children and Adolescents
Creators: name: Aastha, Jain
name: Dr. Swati, Jhawar
Publisher: name: Zenodo
Year: 2024

description: This study addresses the increasing prevalence of depression among children and adolescents worldwide, with a focus on the role of social media as a contributing factor. The research problem revolves around the detrimental effects of social media on mental health, particularly in relation to depression, with factors such as social comparison, cyberbullying, fear of missing out etc. identified as potential causes. The aim of the study is to explore the relationship between social media and depression, considering both the negative impacts and the potential for social media to aid in alleviating depression.  The research design includes a qualitative analysis of the factors causing depression in relation to social media use, with a graphical analysis of depression rates and social media usage trends. The implications of this study highlight the importance of promoting mindful social media usage, and being vigilant for signs of depression, especially in vulnerable populations.
Emotional Numbing and Lessons Learned after a Violent Conflict – Experimental Evidence from Ambon, Indonesia
Creators: name: Werner, Katharina
name: Lambsdorff, Johann Graf
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: Neuroscience
subject: Sociology
subject: FOS: Sociology
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 60506 Virology
subject: FOS: Biological sciences

description: The consequences of violent conflict remain puzzling, with some studies suggesting discrimination, others discovering increased prosociality, and others finding evidence for reduced prosociality. We solve this puzzle with results from dictator, ultimatum, and trust games run with Muslim and Christian students in post-conflict Ambon, Indonesia. We find that discrimination is only moderate and that the reaction of prosociality is context-specific. Prosociality is low if we reveal the counterpart’s religious or ethnic identity and is high if it is not revealed. Our effects are particularly strong if subjects had been victimised during the conflict. We argue that revealing the identity inhibits the lessons learned from the conflict and brings about emotional numbing because revealed identities remind subjects of the conflict. Such religious and ethnic cues can thus make conflict salient. We infer that avoiding such cues is important for peace reconciliation as well as economic and social development.
On stabilizability of switched linear systems under restricted switching
Creators: name: Kundu, Atreyee
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper deals with stability of discrete-time switched linear systems whose all subsystems are unstable and the set of admissible switching signals obeys pre-specified restrictions on switches between the subsystems and dwell times on the subsystems. We derive sufficient conditions on the subsystems matrices such that a switched system is globally exponentially stable under a set of purely time-dependent switching signals that obeys the given restrictions. The main apparatuses for our analysis are (matrix) commutation relations between certain products of the subsystems matrices and graph-theoretic arguments.
description: 20 pages, 2 figures
Devolution and Accountability Effects in the Public Provision of Water Services in Indonesia
Creators: name: Meirelles, Patricia
name: Rodriguez, Catherine
name: Meirelles, Patricia
name: Rodriguez, Catherine
Publisher: name: Unknown
Year: 2010
Subjects: subject: Resource /Energy Economics and Policy
subject: Indonesia
subject: decentralization
subject: accountability
subject: devolution
subject: water

description: This paper separately evaluates how devolution and accountability, two distinct aspects of the decentralization reforms implemented in Indonesia in the year 2001, influenced the public provision of water services. Using household level data it is found that the devolution of responsibility does not necessarily affect the provision of public services. Our findings show that the quality of publicly provided water decreased only in cities in which devolution was accompanied by a change in accountability. Robustness checks suggest that these results are driven by changes in the accountability framework rather than trends in the health services.
Study and Analyze the Attitude Determination and Control Subsystem ADCS of a Small Remote Sensing Satellite
Creators: name: Ibrahim, Bahaa
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Aerospace Engineering
subject: FOS: Mechanical engineering
subject: Mechanical Engineering
subject: 90108 Satellite, Space Vehicle and Missile Design and Testing

description:
This technical report aims to Study and Analyze the Attitude Determination and Control Subsystem ADCS of a Small Remote Sensing Satellite, beginning with Describing the ADCS system of small satellites, its components and the function of each component, classifications of ADCS for small satellites and give some actual example of these satellites. Secondly describing the attitude control system actuators, Studying, analyzing the performance of actuators in real life, and Describing the different types of sensors used in a small satellite control system.
Describe technically how the system will perform a maneuver.
Oscillating tails of dispersion-managed soliton
Creators: name: Lushnikov, Pavel M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Oscillating tails of dispersion-managed optical fiber system are studied for strong dispersion map in the framework of path-averaged Gabitov-Turitsyn equation. The small parameter of the analytical theory is the inverse time. An exponential decay in time of soliton tails envelope is consistent with nonlocal nonlinearity of Gabitov-Turitsyn equation, and the fast oscillations are described by a quadratic law. The pre-exponential modification factor is the linear function of time for zero average dispersion and cubic function for nonzero average dispersion.
description: 6 pages, 4 figures; submitted to Jounal of the Optical Society of America B
Empowerment through participatory action research : a case study of participatory action research with young refugees in Dagahaley Camp, Kenya
Creators: name: Cooper, Elizabeth
Publisher: name: University of British Columbia
Year: 2009

description: This thesis is a personal account and analysis of the methodological considerations, choices and activities that I undertook in a research project about out-of-school youths in the Dadaab Refugee Camps of Northeastern Province, Kenya. It chronicles two distinct stages of research in the camps, the first in 2003 which was a blended experience of pilot data collection and advocacy research, and the second in 2004 which was an attempt at a pure model of Participatory Action Research (PAR), as well as the personal, theoretical and practical deliberations that were a preoccupation before, during, between and following these experiences in Dadaab. The aim of this thesis is to contribute to the empirical documentation of implementing PAR as well as its potential for realizing various forms and degrees of empowerment among participants. A review of the literature that espouses and critiques PAR is included as is a review of the literature about research with refugees and in refugee camps, but the primary focus of the thesis is experiential data. Thus, the "Methodology chapter" (Chapter 5) may be thought of as the nucleus of this thesis with the rest of the paper orbiting around it to try to make sense of how the methodology should be approached and how it may have achieved some forms of empowerment. I argue that PAR can provide a social opportunity through which the realms of human agency and freedom may be expanded. For individuals and collectives as disempowered as youths in a long-term refugee camp, the values that direct PAR, which I summarize as authenticity in relationships, hold unique potential for human flourishing. An important lesson from this research experience is that the significance of synchronizing such an opportunity for human flourishing with the imagination and ambition of youth participants should not be underestimated.
Supplementary data A for FajarFPambudi manuscript.xlsx
Creators: name: Fajar Fathiawan Pambudi
Publisher: name: figshare
Year: 2020
Subjects: subject: 90406 Powder and Particle Technology
subject: FOS: Chemical engineering
subject: 90499 Chemical Engineering not elsewhere classified

description: This dataset contains compaction data of briquette made from binary mixture of Indonesia middle-rank coal with different mass fraction of small and large particles. Density of briquette was measured using caliper while being pressed inside the dies during uniaxial briquetting. Based on each density, the compaction characteristics of each mixture was analyzed using Cooper-Eaton curve-fitting model. Curve-fitting was performed using Solver Add-Ins in Microsoft Excel 2016.Inside the xlsx file, spreadsheets of pressed density, bimodal mixture optimal composition, fractional density and average coordination number at 0.02 bar, example of curve-fitting operations, compaction characteristics from Cooper-Eaton model, and the regression quality (R2) could be found.
Menos desiguales: la distribución del ingreso luego de las reformas estructurales
Creators: name: Jaramillo, Miguel
name: Saavedra, Jaime
name: Jaramillo, Miguel
name: Saavedra, Jaime
Publisher: name: Unknown
Year: 2011
Subjects: subject: Labor and Human Capital
subject: Political Economy
subject: Desigualdad economica
subject: Distribucion del ingreso
subject: Politica social
subject: Politica gubernamental
subject: Mercado de trabajo
subject: Economic disparity
subject: Income distribution
subject: Social policy
subject: Government policy
subject: Labour market
subject: Peru

description: Entre 1997 y 2006 —el periodo posterior a la reforma estructural en Perú— el coeficiente de Gini del ingreso familiar per cápita disminuyó de 0.54 a 0.49. Otros hallazgos claves en el análisis de la evolución reciente de la desigualdad en el Perú son el rol de los ingresos no laborales en la reducción de la desigualdad del ingreso, la identificación de niveles de desigualdad mayores en las zonas urbanas que en las rurales y la disminución más pronunciada de la desigualdad en las zonas urbanas. Entre los factores que explican la desigualdad es reveladora la importancia del área de residencia (urbana/rural) como protagonista de un rol mucho mayor que el sugerido por estimados para periodos anteriores. Así mismo, se evidencia una dinámica de mercado que ha mantenido los retornos a la educación estancados durante la expansión económica mientras que, con la ayuda de la demografía, ha conducido a una disminución en los retornos a la experiencia. Si bien las políticas han tendido a reducir la brecha entre las zonas rurales y urbanas, aún queda mucho trabajo por hacer. Los resultados de este estudio sugieren tres áreas prioritarias para promover el crecimiento inclusivo: calidad de la educación, fomento de pequeñas empresas y cierre de la brecha entre las zonas urbanas y rurales en el acceso a servicios de infraestructura básica.
Hidden variables simulating quantum contextuality increasingly violate the Holevo bound
Creators: name: Cabello, Adán
name: Joosten, Joost J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: In this paper from 2011 we approach some questions about quantum contextuality with tools from formal logic. In particular, we consider an experiment associated with the Peres-Mermin square. The language of all possible sequences of outcomes of the experiment is classified in the Chomsky hierarchy and seen to be a regular language. Next, we make the rather evident observation that a finite set of hidden finite valued variables can never account for indeterminism in an ideally isolated repeatable experiment. We see that, when the language of possible outcomes of the experiment is regular, as is the case with the Peres-Mermin square, the amount of binary-valued hidden variables needed to de-randomize the model for all sequences of experiments up to length n grows as bad as it could be: linearly in n. We introduce a very abstract model of machine that simulates nature in a particular sense. A lower-bound on the number of memory states of such machines is proved if they were to simulate the experiment that corresponds to the Peres-Mermin square. Moreover, the proof of this lower bound is seen to scale to a certain generalization of the Peres- Mermin square. For this scaled experiment it is seen that the Holevo bound is violated and that the degree of violation increases uniformly.
title: Paratexte_L'Illusionniste amateur
Creators: name: AmateurS
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2021

description: Paratexte
description: ID_PARA_00958
Retrospective Cohort Study to Examine Disease Progression in Retinitis pigmentosa Patients Seen at the University of Ottawa Eye Institute
Creators: name: Kandakji, Lynn
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2024
Subjects: retinitis pigmentosa
progression
genetics
prediction
inherited retinal degeneration
optical coherence tomography
visual field
electroretinography

description: Retinitis pigmentosa (RP) is the most common form of inherited retinal degeneration, heterogenous in its clinical presentation and genetic cause. Understanding the short-term disease mechanisms is pivotal for the development of new therapies. Upcoming clinical trials will take genotype-agnostic approaches; therefore, a comprehensive analysis of progression that encompasses many genetic factors will be needed. In this 10-year retrospective cohort study, rates of progression were measured, structurally and functionally, in 85 RP patients seen at the Ottawa Eye Institute. Parameters examined were the ellipsoid zone (EZ) length on an optical coherence tomography (OCT) image, Humphrey and Goldmann visual fields (VF), and full-field and multifocal electroretinograms (ERGs). RP is revealed to have a 1st order exponential decay pattern of loss, with mean rates of decline of 7.65 %/year for ellipsoid zone (EZ) length, 6.35%/year, 4.39%/year, and 1.57%/year for the Humphrey VF 30-2, 24-2, and 10-2 mean deviation (MD) respectively, and 5.22%/year, 7.77%/year, 6.77%/year, 6.80%/year, and 12.45%/year for Goldmann V4e, III4e, I4e, I3e, and I2e isopter lengths, respectively. In cases where different diagnostic tests were conducted within 3 months of each other, the data was analysed to determine if there was a positive correlation between the diagnostic tests. Ellipsoid zone length and Humphrey 24-2 mean deviation exhibited the strongest association with a coefficient of 0.99. The study reveals structural and functional changes in advanced retinitis pigmentosa and presents a protocol for assessing short-term progression.
The Long Trace of Inequality: Evidence from Cundinamarca, Colombia
Creators: name: Galan, Juan Sebastian
name: Galan, Juan Sebastian
Publisher: name: Unknown
Year: 2011
Subjects: subject: Land Economics/Use
subject: Land inequality
subject: growth
subject: public goods
subject: political economy

description: This paper uses historic data from Cundinamarca, Colombia to empirically assess the impact of land inequality persistence, inherited from the colonial rule, on economic development in the long run. Based on the Engerman & Sokoloff hypothesis and the use of GIS, I use plausible exogenous variation in land endowments to design an instrumental variable strategy. In contrast to recent studies, I find that more unequal municipalities in the XIX and XX century are associated with better growth, human capital and public goods provision measures today. Political economy channels instead of agricultural productivity gains can explain these results. In municipalities where land was historically more concentrated, powerful landowners were more successful in solving their collective action problem of accessing political power to influence the allocation economic resources in their interests.
Improved Measurement of the CKM Angle alpha Using B0->rho+rho- Decays
Creators: name: BABAR Collaboration
name: Aubert, B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present results from an analysis of B0 -> rho+rho- using 232 million Upsilon(4S) decays collected with the BABAR detector at the PEP-II asymmetric-energy $B$ Factory at SLAC. We measure the longitudinal polarization fraction f_L = 0.978 +- 0.014 (stat) +0.021 -0.029 (syst) and the CP-violating parameters SLong = -0.33 +- 0.24 (stat) +0.08 -0.14 (syst) and CLong = -0.03 +- 0.18 (stat) +- 0.09 (syst). Using an isospin analysis of B -> rho rho decays we determine the unitarity triangle alpha. The solution compatible with the Standard Model is alpha = (100 +- 13) degrees.
description: 3 figures, 7 pages
Exploring the Therapeutic Relationship when Planning to Implement Patient Decision Aids Throughout the Implantable Cardioverter-Defibrillator Trajectory
Creators: name: Vallières, Arianne
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2024
Subjects: Implantable Cardioverter Defibrillator
Decision Support
Therapeutic Relationship

description: Encounters in which shared decision-making occur relies on patients and healthcare professionals establishing a partnership. Yet, little is known about the therapeutic relationship (TR) specifically for the implementation and use of patient decision aids (PDA) to facilitate shared decision-making. The aim of this thesis was to explore how the TR is considered when planning PDA implementation for patients eligible for or with an implantable cardioverter-defibrillator (ICD). Using Thorne's interpretive description approach, I conducted a secondary thematic analysis using transcripts with 17 healthcare professionals, ten patients and three family members. Findings were mapped to the TR elements. I identified three themes. First, Pieces of the puzzle: Elements of the TR revealed that while respect and therapeutic communication were identified as important for PDA implementation, other TR were either referred to implicitly or not at all. Second, Good intentions and challenges of establishing a TR revealed that healthcare professionals wanted to engage in TR but lacked time and felt discomfort navigating ICD decisions. Finally, in PDA as support for the TR, participants considered PDAs as being able to facilitate TR elements such as communication and respect, enhancing the consultation. In conclusion, there is a role for TR elements when planning PDA implementation. Further research is needed to explore the other therapeutic relationship elements of genuineness, manifesting a presence, active listening, and reciprocity.
Isochrone fitting of Galactic globular clusters -- II. NGC6205 (M13)
Creators: name: Gontcharov, G. A.
name: Khovritchev, M. Yu.
name: Mosenkov, A. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present new isochrone fits to colour-magnitude diagrams of the Galactic globular cluster NGC\,6205 (M13). We utilise 34 photometric bands from the ultraviolet to mid-infrared by use of data from the {\it HST}, {\it Gaia} DR2, SDSS, unWISE, Pan-STARRS DR1, and other photometric sources. In our isochrone fitting we use the PARSEC, MIST, DSEP, BaSTI, and IAC-BaSTI theoretical models and isochrones, both for the solar-scaled and He-$α$-enhanced abundances, with a metallicity of about [Fe/H]$=-1.58$ adopted from the literature. The colour-magnitude diagrams, obtained with pairs of filters from different datasets but of similar effective wavelengths, show some colour offsets up to 0.04 mag between the fiducial sequences and isochrones. We attribute these offsets to systematic differences of the datasets. Some intrinsic systematic differences of the models/isochrones remain in our results: the derived distances and ages are different for the ultraviolet, optical and infrared photometry used, while the derived ages are different for the different models/isochrones, e.g. in the optical range from $12.3\pm0.7$ Gyr for He-$α$-enhanced DSEP to $14.4\pm0.7$ Gyr for MIST. Despite the presence of multiple stellar populations, we obtain convergent estimates for the dominant population: best-fitting distance $7.4\pm0.2$ kpc, true distance modulus $14.35\pm0.06$ mag, parallax $0.135\pm0.004$ mas, extinction $A_\mathrm{V}=0.12\pm0.02$, and reddening $E(B-V)=0.04\pm0.01$. These estimates agree with other recent estimates, however, the extinction and reddening are twice as high as generally accepted. The derived empirical extinction law agrees with the Cardelli-Clayton-Mathis extinction law with the best-fitting $R_\mathrm{V}=3.1^{+1.6}_{-1.1}$.
description: 2020MNRAS.497.3674G, originally 20 pages, 16 + 4 figures
An Evaluation of the Macarena Integral Consolidation Plan (PCIM)
Creators: name: Mejia, Daniel
name: Uribe, Maria Jose
name: Ibanez, Ana Maria
name: Mejia, Daniel
name: Uribe, Maria Jose
name: Ibanez, Ana Maria
Publisher: name: Unknown
Year: 2011
Subjects: subject: Land Economics/Use
subject: Macarena
subject: Consolidation Plan
subject: Colombia
subject: Anti-drug policies

description: This paper presents a description of the new strategy for the fight against drugs implemented in Colombia since the year 2007. The Strategic Leap Forward, as the Colombian government has called the program, or the Strategic Development Initiative, as the United States Agency for International Development (USAID) calls it, is a step forward in the design of anti-drug policies that are more sustainable and effective in the mid-term. Currently, a pilot project is being implemented in the Macarena region, in the department of Meta (southeast of Bogotá), where coca crops and illicit activities were the norm just a few years ago. The Colombian State, partially financed by the United States governments and European countries, consolidates its presence in this region with the different instances and programs of the state apparatus to recover territorial control and combat the production of illicit drugs. But even more important is that this new approach in the fight against illegal drugs is based on a regional economic development plan, to avoid that peasants become involved in the first stages of cocaine production and trafficking process. The adequate functioning of this strategy can be a reference point to other countries that face similar problems of illicit drug production and conflict associated with these activities.
The Optimal Design of Clinical Trials with Potential Biomarker Effects, A Novel Computational Approach
Creators: name: Lu, Yitao
name: Zhou, Julie
name: Xing, Li
name: Zhang, Xuekui
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: Computation (stat.CO)
subject: FOS: Computer and information sciences

description: As a future trend of healthcare, personalized medicine tailors medical treatments to individual patients. It requires to identify a subset of patients with the best response to treatment. The subset can be defined by a biomarker (e.g. expression of a gene) and its cutoff value. Topics on subset identification have received massive attention. There are over 2 million hits by keyword searches on Google Scholar. However, how to properly incorporate the identified subsets/biomarkers to design clinical trials is not trivial and rarely discussed in the literature, which leads to a gap between research results and real-world drug development. To fill in this gap, we formulate the problem of clinical trial design into an optimization problem involving high-dimensional integration, and propose a novel computational solution based on Monte-Carlo and smoothing methods. Our method utilizes the modern techniques of General-Purpose computing on Graphics Processing Units for large-scale parallel computing. Compared to the standard method in three-dimensional problems, our approach is more accurate and 133 times faster. This advantage increases when dimensionality increases. Our method is scalable to higher-dimensional problems since the precision bound is a finite number not affected by dimensionality. Our software will be available on GitHub and CRAN, which can be applied to guide the design of clinical trials to incorporate the biomarker better. Although our research is motivated by the design of clinical trials, the method can be used widely to solve other optimization problems involving high-dimensional integration.
description: 18 pages, 3 figures, 1 table
Engineering antiferromagnetic Heisenberg spin chains for maximizing of the groundstate entanglement
Creators: name: Xin, R.
name: Song, Z.
name: Sun, C. P.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the correlation function and concurrence for the eigenstates with zero spin of engineered Heisenberg models to explore the entanglement property. It is shown that the total nearest neighbor (NN) correlation function of zero-spin eigenstates reaches its local extremum when the coupling strength is uniform, and correspondingly the groundstate entanglement of $d$-D cubic AF Heisenberg model is locally maximized. Moreover, numerical calculations for a $N$-site quantum spin ring with cosinusoidally modulated exchange coupling, i.e. $J_i=J(1+\cos(2πi/N))$, indicate that the uniform coupling is not the unique optimal distribution for maximizing the groundstate entanglement and this modulation of interactions can induce the longer range entanglement.
description: 4 pages, 3 figures