cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Novos investimentos e o ambiente dos contratos com a administração
Creators: name: Fortini, Cristiana
Publisher: name: figshare
Year: 2021
Subjects: subject: 180103 Administrative Law
subject: FOS: Law

description: Os jornais do dia 31 de dezembro de 2018 noticiaram que o novo governo pretende intensificar esforço melhorar o ambiente de negócios e estimular o setor produtivo. Evidentemente que a remoção de exigências cartorárias, como autenticação de documentos e reconhecimento de firmas, não tem o condão de reanimar o mercado, embora essa tenha sido apontada como exemplo de medida, já previsto em lei, com espírito “libertador”.
title: The Relationship Between Collateral Therapy and the Adult Pedophile's Ability to Advance Through Levels of Treatment
Creators: name: Bennion, Julie G.
Publisher: name: Utah State University
Year: 1998

description: The purpose of this study was to examine the relationship between collateral therapy and the adult male pedophile's ability to advance through levels of treatment. Data from a convenience sample of 27 adult male pedophiles attending therapy at Intermountain Specialized Abuse Treatment Centers were collected for this study. Data were collected from participants ' files on 22 independent variables, including the primary independent variable, collateral sessions. The dependent variable was the time it took participants to advance through levels of treatment.
A comparison of measures of central tendency for participants who had and those who had not participated in collateral therapy indicated a moderate difference in the number of days it took to complete a level when the sample was divided into collateral versus non- collateral participants. Though no t statistically significant, results of a correlational analysis revealed an inverse relationship between collateral sessions and time. Results of t tests run to examine the difference in group means between those who had collateral therapy and those who did not indicated no significant difference in group means. However, a difference approaching significance was found in the advancement from Level II to Level III. Those who participated in collateral therapy appear to have finished Level II sooner than those who had no collateral therapy.
On the origin of eccentricities among extrasolar planets
Creators: name: Malmberg, Daniel
name: Davies, Melvyn B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Most observed extrasolar planets have masses similar to, but orbits very different from, the gas giants of our solar system. Many are much closer to their parent stars than would have been expected and their orbits are often rather eccentric. We show that some of these planets might have formed in systems much like our solar system, i.e. in systems where the gas giants were originally on orbits with a semi-major axis of several au, but where the masses of the gas giants were all rather similar. If such a system is perturbed by another star, strong planet-planet interactions follow, causing the ejection of several planets while leaving those remaining on much tighter and more eccentric orbits. The eccentricity distribution of these perturbed systems is very similar to that of the observed extrasolar planets with semi-major axis between 1 and 6 au.
description: Accepted for publication in MNRAS Letters
The Dawn of Black Holes
Creators: name: Lusso, Elisabeta
name: Valiante, Rosa
name: Vito, Fabio
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In the last decades, luminous accreting super-massive black holes have been discovered within the first Gyr after the Big Bang, but their origin is still an unsolved mystery. We discuss our state-of-the-art theoretical knowledge of their formation physics and early growth, and describe the results of dedicated observational campaigns in the X-ray band. We also provide an overview of how these systems can be used to derive cosmological parameters. Finally, we point out some open issues, in light of future electro-magnetic and gravitational-wave astronomical facilities.
description: This Chapter will appear in the Section "Active Galactic Nuclei in X and Gamma-rays" (Section Editors: A. de Rosa, C. Vignali) of the "Handbook of X-ray and Gamma-ray Astrophysics" (Editors in chief: C. Bambi and A. Santangelo)
Understanding Federated Learning from IID to Non-IID dataset: An Experimental Study
Creators: name: Seo, Jungwon
name: Catak, Ferhat Ozgur
name: Rong, Chunming
Publisher: name: arXiv
Year: 2025
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: As privacy concerns and data regulations grow, federated learning (FL) has emerged as a promising approach for training machine learning models across decentralized data sources without sharing raw data. However, a significant challenge in FL is that client data are often non-IID (non-independent and identically distributed), leading to reduced performance compared to centralized learning. While many methods have been proposed to address this issue, their underlying mechanisms are often viewed from different perspectives. Through a comprehensive investigation from gradient descent to FL, and from IID to non-IID data settings, we find that inconsistencies in client loss landscapes primarily cause performance degradation in non-IID scenarios. From this understanding, we observe that existing methods can be grouped into two main strategies: (i) adjusting parameter update paths and (ii) modifying client loss landscapes. These findings offer a clear perspective on addressing non-IID challenges in FL and help guide future research in the field.
A Spectral Method for Depth-Separated Solution of a Wavenumber Integration Model in Horizontally Stratified Fluid Acoustic Waveguides
Creators: name: Tu, Houwang
name: Wang, Yongxian
name: Liu, Wei
name: Ma, Shuqing
name: Wang, Xiaodong
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: The wavenumber integration model is considered to be the most accurate algorithm for arbitrary horizontally stratified media in computational ocean acoustics. In contrast to the normal mode approach, it considers not only the discrete wavenumber spectrum but also the continuous spectrum components, eliminating errors in the model approximation for horizontally stratified media. Traditionally, analytical and semianalytical methods have been used to solve the depth-separated wave equation in the wavenumber integration method, and numerical solutions have generally focused on the finite difference method and the finite element method. In this paper, an algorithm for solving the depth equation using the Chebyshev--Tau spectral method combined with a domain decomposition strategy is proposed, and a numerical program named WISpec is developed accordingly. The proposed algorithm can simulate not only the sound field excited by a point source but also the sound field excited by an infinite line source. The key idea of the algorithm is to first discretize the depth equations for each layer via the Chebyshev--Tau spectral method and then solve the equations for each layer simultaneously by incorporating boundary and interface conditions. Several representative numerical experiments are devised to test the accuracy and speed of WISpec. The high consistency of the results of different software programs running under the same configuration proves that the numerical algorithm proposed in this paper is accurate, reliable and numerically stable.
description: 22 pages, 9 figures and 3 tables
title: Trainee Perspectives of Basic Family Therapy Skills
Creators: name: Webb, Nancy
Publisher: name: Utah State University
Year: 1997

description: Much has been written about family therapy training and supervision from the perspective of teachers and supervisors. However, the perspective of family therapy trainees is not well represented in the literature. Research employing student responses is common, but results are offered from the perspective of the trainers of family therapy and the subjective experience of students is frequently left untapped. One area of training and supervision, basic therapy skills, offers no perspectives from family therapy trainees.
This research examined trainee perspectives concerning basic family therapy skills and made comparisons to trainer perspectives regarding the same skills. The findings indicate that some differences exist in those skills valued as most important to students when compared to the same skills evaluated by their instructors. Students place value on self attributes and joining skills whereas teachers and supervisors value professional ethics and the students ' knowledge base when ranking skills.
Holographic counterterms from local supersymmetry without boundary conditions
Creators: name: Grumiller, Daniel
name: van Nieuwenhuizen, Peter
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We show in some lower-dimensional supergravity models that the holographic counterterms which are needed in the AdS/CFT correspondence to make the theory finite, coincide with the counterterms that are needed to make the action supersymmetric without imposing any boundary conditions on the fields.
description: 9 pages, v2: added 3 Refs
Collective nuclear excitations with Skyrme-Second RPA
Creators: name: Gambacurta, D.
name: Grasso, M.
name: Catara, F.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Second RPA calculations with a Skyrme force are performed to describe both high- and low-lying excited states in $^{16}$O. The coupling between 1 particle-1 hole and 2 particle-2 hole as well as that between 2 particle-2 hole configurations among themselves are fully taken into account and the residual interaction is never neglected, not resorting therefore to a generally used approximate scheme where only the first kind of coupling is considered. The issue of the rearrangement terms in the matrix elements beyond standard RPA is addressed and discussed. As a general feature of second RPA results, a several-MeV shift of the strength distribution to lower energies is systematically found with respect to RPA distributions. A much more important fragmentation of the strength is also naturally provided by second RPA due to the huge number of 2 particle-2 hole configurations. A better description of the excitation energies of the low-lying 0$^+$ and 2$^+$ states is obtained with second RPA with respect to RPA.
description: 18 pages, 16 figures, 3 tables
Atividade sancionatória e a sugestão da CVM ao acordo de supervisão
Creators: name: Fortini, Cristiana
Publisher: name: figshare
Year: 2021
Subjects: subject: 180103 Administrative Law
subject: FOS: Law

description: Por Cristiana Fortini Em 2017, foi editada a Lei 13.506, que disciplina o processo administrativo sancionador na esfera da atuação do Banco Central do Brasil e da Comissão de Valores Mobiliários, promovendo uma série de alterações em vários diplomas legais, em especial na Lei 6.385/76, responsável por criar a CVM. Coube à Lei 6.385/76 atribuir à CVM a competência para impor penalidades aos infratores, nos moldes do artigo 9, inciso VI, cumprindo ao artigo 11 enumerar as sanções, cuja aplicação poderá ocorrer de forma isolada ou cumulativa.
Free-induction decay and envelope modulations in a narrowed nuclear spin bath
Creators: name: Coish, W. A.
name: Fischer, Jan
name: Loss, Daniel
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We evaluate free-induction decay for the transverse components of a localized electron spin coupled to a bath of nuclear spins via the Fermi contact hyperfine interaction. Our perturbative treatment is valid for special (narrowed) bath initial conditions and when the Zeeman energy of the electron $b$ exceeds the total hyperfine coupling constant $A$: $b>A$. Using one unified and systematic method, we recover previous results reported at short and long times using different techniques. We find a new and unexpected modulation of the free-induction-decay envelope, which is present even for a purely isotropic hyperfine interaction without spin echoes and for a single nuclear species. We give sub-leading corrections to the decoherence rate, and show that, in general, the decoherence rate has a non-monotonic dependence on electron Zeeman splitting, leading to a pronounced maximum. These results illustrate the limitations of methods that make use of leading-order effective Hamiltonians and re-exponentiation of short-time expansions for a strongly-interacting system with non-Markovian (history-dependent) dynamics.
description: 13 pages, 9 figures
Barotropic index w-singularities in cosmology
Creators: name: Dabrowski, Mariusz P.
name: Denkiewicz, Tomasz
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We find an explicit cosmological model which allows a special type of cosmological singularity which we call a $w$-singularity. This singularity has the scale factor finite, the energy density and pressure vanishing, and the only singular behaviour appears in a time-dependent barotropic index $w(t)$. It is different from the type IV cosmological singularity in that it does not exhibit the divergence of the higher derivatives of the Hubble parameter and from the big-brake since it does not fulfill the anti-Chaplygin gas equation of state. We also find an interesting duality between the $w$-singularities and the big-bang singularities. Physical examples of $w$-singularities appear in $f(R)$, scalar field and brane cosmologies.
description: REVTEX4, 4 pages, 4 figures, version to match a published paper, title expanded
Spinel ferrite nanocrystals embedded inside ZnO: magnetic, electronic and magneto-transport properties
Creators: name: Zhou, Shengqiang
name: Potzger, K.
name: Xu, Qingyu
name: Kuepper, K.
name: Talut, G.
name: Marko, D.
name: Muecklich, A.
name: Helm, M.
name: Fassbender, J.
name: Arenholz, E.
name: Schmidt, H.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this paper we show that spinel ferrite nanocrystals (NiFe2O4, and CoFe2O4) can be texturally embedded inside a ZnO matrix by ion implantation and post-annealing. The two kinds of ferrites show different magnetic properties, e.g. coercivity and magnetization. Anomalous Hall effect and positive magnetoresistance have been observed. Our study suggests a ferrimagnet/semiconductor hybrid system for potential applications in magneto-electronics. This hybrid system can be tuned by selecting different transition metal ions (from Mn to Zn) to obtain various magnetic and electronic properties.
description: 12 pages, 14 figs. accepted for publication at PRB
Quantization of algebraic invariants through Topological Quantum Field Theories
Creators: name: González-Prieto, Ángel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Algebra (math.QA)
subject: Algebraic Geometry (math.AG)
subject: Category Theory (math.CT)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 57R56 (Primary), 18M05, 57K16, 14D21 (Secondary)

description: In this paper we investigate the problem of constructing Topological Quantum Field Theories (TQFTs) to quantize algebraic invariants. We exhibit necessary conditions for quantizability based on Euler characteristics. In the case of surfaces, also provide a partial answer in terms of sufficient conditions by means of almost-TQFTs and almost-Frobenius algebras for wide TQFTs. As an application, we show that the Poincaré polynomial of $G$-representation varieties is not a quantizable invariant by means of a monoidal TQFTs for any algebraic group $G$ of positive dimension.
description: Introduction section improved. Typos corrected. 28 pages, 7 figures, 1 table. Comments are welcome!
title: Mean Length of Utterance in Relation to Gender and Preschool Activity Area
Creators: name: Thompson, Angela Sisson
Publisher: name: Utah State University
Year: 1997

description: Factors influencing language development and use are many. Teacher influences such as teacher:child ratio and teaching experience can affect the types of language children produce. Classroom influences including activities, size of the room, and length of the day also play a role in the development of language. All of these areas need to be considered in order to provide the best possible language environment for the preschool child.
In this study, the researchers examined the mean length of utterance (MLU) values of preschool children while participating at three areas in a preschool classroom : art, dramatic play, and snack. Gender differences in MLU were also studied. Sixteen children (8 females, 8 males), ranging in age from 50 to 66 months, participated in the study. The children were currently attending the Child Development Laboratory at Utah State University.
For the collection of data, the children wore a tape recorder with a microphone until a 5-minute sample from each of the areas was obtained. These audio recordings were then transcribed and calculated into MLU values.
Findings from the analysis of variance tests (3[activity : art, dramatic p l ay, snack] X 2 [gender: male, female]) demonstrated that the children had larger MLU values at snack than at art or dramatic play. Snack time has not always been recognized as an activity area for young children to display typical language use. Overall, and at the three individual areas, there were no gender differences found in MLU. Results of this study may be used in planning how to arrange and organize an environment in which the children are comfortable and have opportunities to converse with both adults and other children.
Realization of the inverse scattering transform method for the Korteweg-de Vries equation
Creators: name: Grudsky, Sergei M.
name: Kravchenko, Vladislav V.
name: Torba, Sergii M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: Classical Analysis and ODEs (math.CA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35Q53, 34L25, 33C45, 47B35, 65L09, 65L15, 65M99, 65R20

description: A method for practical realization of the inverse scattering transform method for the Korteweg-de Vries equation is proposed. It is based on analytical representations for Jost solutions and for integral kernels of transformation operators obtained recently by the authors. The representations have the form of functional series in which the first coefficient plays a crucial role both in solving the direct scattering and the inverse scattering problems. The direct scattering problem reduces to computation of a number of the coefficients following a simple recurrent integration procedure with a posterior calculation of scattering data by well known formulas. The inverse scattering problem reduces to a system of linear algebraic equations from which the first component of the solution vector leads to the recovery of the potential. We prove the applicability of the finite section method to the system of linear algebraic equations and discuss numerical aspects of the proposed method. Numerical examples are given, which reveal the accuracy and speed of the method.
description: 37 pages, 4 figures
Variable temperature dewar for infrared absorption studies
Creators: name: MacPherson, Ronald William
Publisher: name: University of British Columbia
Year: 2011

description: A variable temperature dewar has been designed and built at the solid state laboratory of the University of British Columbia for infra-red absorption experiments at low temperatures. The dewar features a rotatable sample holder which brings any one of three samples into the light beam for comparison measurements. A removable tail section permits easy access to the samples. The dewar has been successfully operated over the 4°K to 50°K range. It can maintain sample temperatures to within 1°K for periods up to two hours. Approximately ten minutes is required to achieve any desired temperature in the operating range. The construction and calibration of a copper vs. constantan thermocouple is described. The thermocouple was used to measure the sample temperatures to an accuracy of about 1°K. Temperature variations of a few tenths of a degree could be detected. As a demonstration of the dewar's capabilities, an experiment was performed to measure the line width dependence of hole transitions from the ground state of the P3/2 band to the first excited state in the P1/2 band in boron doped silicon. The experiment showed that the line broadening starts at about 20°K and increases at higher temperatures. Several methods of improving the performance of the dewar are suggested.
A possible surviving companion of the SN Ia in the Galactic SNR G272.2-3.2
Creators: name: Ruiz-Lapuente, Pilar
name: Hernández, Jonay I. González
name: Cartier, Régis
name: Boutsia, Konstantina
name: Figueras, Francesca
name: Canal, Ramon
name: Galbany, Lluis
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We use the {\it Gaia} EDR3 to explore the Galactic supernova remnant SNR G272.2-3.2, produced by the explosion of a Type Ia supernova (SNIa), about 7,500 years ago, to search for a surviving companion. From the abundances in the SNR ejecta, G272.2-3.2 is a normal SN Ia. The {\it Gaia} parallaxes allow to select the stars located within the estimated distance range of the SNR, and the {\it Gaia} proper motions to study their kinematics. From the {\it Gaia} EDR3 photometry, we construct the HR diagram of the selected sample, which we compare with the theoretical predictions for the evolution of possible star companions of SNIa. We can discard several proposed types of companions by combining kinematics and photometry. We can also discard hypervelocity stars. We focus our study on the kinematically most peculiar star, {\it Gaia} EDR3 5323900215411075328 (hereafter MV-G272), a 8.9 $σ$ outlier in proper motion. It is of M1-M2 stellar type. Its trajectory on the sky locates it at the center of the SNR, 6,000--8,000 years ago, a unique characteristic among the the sample. Spectra allow a stellar parameters determination and a chemical abundance analysis. In conclusion, we have a candidate to be the surviving companion of the SN Ia that resulted in SNR G272.2-3.2. It is supported by its kinematical characteristics and its trajectory within the SNR. This opens the possibility of a single-degenerate scenario for a SN Ia with an M-type dwarf companion.
description: 35 pages, 19 Figures, 5 Tables, published as ApJ 947, 90R
Supplementary document for Color Preferences of Western Females with Art Education - 7420766.pdf
Creators: name: Oliveira, Patrícia
name: Linhares, Joao
name: Feitosa-Santana, Claudia
name: Nascimento, Sergio
Publisher: name: Optica Publishing Group
Year: 2025
Subjects: Uncategorized

description: Supplementary material for Color Preferences of Western Females with Art Education
Comparison of the superbosonization formula and the generalized Hubbard-Stratonovich transformation
Creators: name: Kieburg, Mario
name: Sommers, Hans-Jürgen
name: Guhr, Thomas
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: PACS: 02.30.Px, 05.30.Ch, 05.30.-d, 05.45.Mt

description: Recently, two different approaches were put forward to extend the supersymmetry method in random matrix theory from Gaussian ensembles to general rotation invariant ensembles. These approaches are the generalized Hubbard-Stratonovich transformation and the superbosonization formula. Here, we prove the equivalence of both approaches. To this end, we reduce integrals over functions of supersymmetric Wishart-matrices to integrals over quadratic supermatrices of certain symmetries.
description: 27 pages, 1 figure
title: The Relationship Between the Outcome Questionnaire and The Revised Dyadic Adjustment Scale in Marital Assessment
Creators: name: Poll, Adam Malan
Publisher: name: Utah State University
Year: 2006

description: This correlational study attempted to determine if the Outcome Questionnaire can be used to collect the same information as the Revised Dyadic Adjustment scale in marital assessment. Both measures are common pretreatment assessments and have relational components. The study used secondary data from the Utah State University Marriage and Family Therapy Clinic. Reliability and correlational tests were performed and the results indicate that the assessments measure different constructs. There also were no statistically significant correlations when comparing the measures by gender, marital distress, and marital satisfaction. Implications are discussed including the formulation of new clinical cut-off scores and the importance of using both measures to perform better assessments.
On Variational Data Assimilation in Continuous Time
Creators: name: Bröcker, Jochen
Publisher: name: arXiv
Year: 2010
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Variational data assimilation in continuous time is revisited. The central techniques applied in this paper are in part adopted from the theory of optimal nonlinear control. Alternatively, the investigated approach can be considered as a continuous time generalisation of what is known as weakly constrained four dimensional variational assimilation (WC--4DVAR) in the geosciences. The technique allows to assimilate trajectories in the case of partial observations and in the presence of model error. Several mathematical aspects of the approach are studied. Computationally, it amounts to solving a two point boundary value problem. For imperfect models, the trade off between small dynamical error (i.e. the trajectory obeys the model dynamics) and small observational error (i.e. the trajectory closely follows the observations) is investigated. For (nearly) perfect models, this trade off turns out to be (nearly) trivial in some sense, yet allowing for some dynamical error is shown to have positive effects even in this situation. The presented formalism is dynamical in character; no assumptions need to be made about the presence (or absence) of dynamical or observational noise, let alone about their statistics.
description: 28 Pages, 12 Figures
Non-unitarisable representations and random forests
Creators: name: Epstein, Inessa
name: Monod, Nicolas
Publisher: name: arXiv
Year: 2008
Subjects: subject: Group Theory (math.GR)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: We establish a connection between Dixmier's unitarisability problem and the expected degree of random forests on a group. As a consequence, a residually finite group is non-unitarisable if its first L2-Betti number is non-zero or if it is finitely generated with non-trivial cost. Our criterion also applies to torsion groups constructed by D. Osin, thus providing the first examples of non-unitarisable groups not containing a non-Abelian free subgroup.
title: Mortgage Default and Neighborhoods: A Case Study of Weber County, Utah
Creators: name: Pedersen, Camille J.
Publisher: name: Utah State University
Year: 2006

description: The purpose of this study was to examine housing, demographic, and economic characteristics that are present in neighborhoods with high rates of mortgage default. In addition, the effect of minority percentage was studied in neighborhoods with high rates of default. Defaulted properties recorded in 2003-2004 in Weber County were geo-coded and assigned into one of 42 census tracts in Weber County. Descriptive statistics then profiled the characteristics of the census tracts. Correlations were used to determine which characteristics had statistical significance with mortgage default rates as well as minority percentage. Logistic regression was conducted to create a model describing the characteristics of neighborhoods that have high rates of default.
The findings from the analysis show that mortgage defaults in Weber County occurred mostly in two well-defined housing markets. The first housing market is found in census tracts with low minorities, newer homes, higher priced homes, more use of second mortgages and home equity loans, more self-employed households, more dependents, and more vacant homes. The second housing market is described as census tracts with high minority percentages, fewer number of dependents, older and lower value of homes, and fewer second mortgages and home equity loans.
The results show that the two housing markets that experienced mortgage default in 2003-2004 are different in their needs and possible prevention strategies. Educators can use this information to help target at-risk neighborhoods for education on horneownership and pre-purchase counseling, therefore strengthening communities.
O novo (futuro) marco legal das parcerias público-privadas
Creators: name: Fortini, Cristiana
Publisher: name: figshare
Year: 2021
Subjects: subject: 180103 Administrative Law
subject: FOS: Law

description: Estão em discussão no Congresso Nacional propostas de mudanças relativas às Parcerias Público Privadas. A comissão especial responsável por propor um novo marco regulatório das PPPs está a recolher sugestões que podem contribuir para o aprimoramento da legislação, em especial da Lei 11.079 / 04. Poder público, operador, funcionalmente, estudiosos do tema são dissipados a refletir sobre o que se aprendeu ao longo dos 15 anos de vivência, inserir mudanças que podem facilitar e encorajar o uso responsável das PPPs.
Probing Cosmic Accelerators Using VHE Gamma Rays and UHE cosmic rays
Creators: name: Levinson, Amir
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The $γ$-ray emission observed in several classes of Galactic and extragalactic astrophysical sources appears to be linked to accreting black holes and rotational powered neutron stars. These systems are prodigious cosmic accelerators, and are also potential sources of the UHE cosmic rays detected by several experiments and VHE neutrinos. We review a recent progress in our understanding of these objects, and demonstrate how recent and future observations can be employed to probe the conditions in the sources.
description: Proc. PANIC08 (invited)
Perspective on Epitaxial NiCo2O4 Film as an Emergent Spintronic Material: Magnetism and Transport Properties
Creators: name: Xu, Xiaoshan
name: Mellinger, Corbyn
name: Cheng, Zhi Gang
name: Chen, Xuegang
name: Hong, Xia
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The ferrimagnetic inverse spinel NiCo2O4 has attracted extensive research interests for its versatile electrochemical properties, robust magnetic order, high conductivity, and fast spin dynamics, as well as its highly tunable nature due to the closely coupled charge, spin, orbital, lattice, and defect effects. Single-crystalline epitaxial thin films of NiCo2O4 present a model system for elucidating the intrinsic physical properties and strong tunability, which are not viable in bulk single crystals. In this perspective, we discuss the recent advances in epitaxial NiCo2O4 thin films, focusing on understanding its unusual magnetic and transport properties in light of crystal structure and electronic structure. The perpendicular magnetic anisotropy in compressively strained NiCo2O4 films is explained by considering the strong spin-lattice coupling, particularly on Co ions. The prominent effect of growth conditions reveals the complex interplay between the crystal structure, cation stoichiometry, valence state, and site occupancy. NiCo2O4 thin films also exhibit various magnetotransport anomalies, including linear magnetoresistance and sign change in anomalous Hall effect, which illustrate the competing effects of band intrinsic Berry phase and impurity scattering. The fundamental understanding of these phenomena will facilitate the functional design of NiCo2O4 thin films for nanoscale spintronic applications.
title: Assessing the Cognitive Development of A Sample of Infants in Paraguay
Creators: name: Peairson, Shannon
Publisher: name: Utah State University
Year: 2006

description: There is very little research to date on infant development in developing countries, including Paraguay. The present study aimed to determine the effects of Pastoral del Nino, an ECD program, in rural Paraguay by assessing two groups of infants. Group I (n = 50) was receiving no intervention and group 2 (n =58) was participating in Pastoral del Nino. Both groups were matched for SES and age of infant. Results indicate that group 2 performed better on the Bayley Scales of Infant Development Mental Development Index. Group I had a mean MDI score of77.96 and group 2 had a mean score of 85.07 (t= -3 .143, I 04 df,p=.002). Group 2 also scored significantly higher on the Home Observation for Measurement of the Environment (HOME; t = -5.373, 105 df, p = .00 I). More research is needed to determine exactly which variables have the greatest impact in infant development in rural Paraguay.
Efficient Manipulation of Bose-Einstein Condensates in a Double-Well Potential
Creators: name: Adriazola, J.
name: Goodman, R. H.
name: Kevrekidis, P. G.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We pose the problem of transferring a Bose-Einstein Condensate (BEC) from one side of a double-well potential to the other as an optimal control problem for determining the time-dependent form of the potential. We derive a reduced dynamical system using a Galerkin truncation onto a finite set of eigenfunctions and find that including three modes suffices to effectively control the full dynamics, described by the Gross-Pitaevskii model of BEC. The functional form of the control is reduced to finite dimensions by using another Galerkin-type method called the chopped random basis (CRAB) method, which is then optimized by a genetic algorithm called differential evolution (DE). Finally, we discuss the extent to which the reduction-based optimal control strategy can be refined by means of including more modes in the Galerkin reduction.
System Architecture Optimization Strategies: Dealing with Expensive Hierarchical Problems
Creators: name: Bussemaker, Jasper H.
name: Saves, Paul
name: Bartoli, Nathalie
name: Lefebvre, Thierry
name: Lafage, Rémi
Publisher: name: arXiv
Year: 2025
Subjects: subject: Optimization and Control (math.OC)
subject: Discrete Mathematics (cs.DM)
subject: Applications (stat.AP)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Choosing the right system architecture for the problem at hand is challenging due to the large design space and high uncertainty in the early stage of the design process. Formulating the architecting process as an optimization problem may mitigate some of these challenges. This work investigates strategies for solving System Architecture Optimization (SAO) problems: expensive, black-box, hierarchical, mixed-discrete, constrained, multi-objective problems that may be subject to hidden constraints. Imputation ratio, correction ratio, correction fraction, and max rate diversity metrics are defined for characterizing hierar chical design spaces. This work considers two classes of optimization algorithms for SAO: Multi-Objective Evolutionary Algorithms (MOEA) such as NSGA-II, and Bayesian Optimization (BO) algorithms. A new Gaussian process kernel is presented that enables modeling hierarchical categorical variables, extending previous work on modeling continuous and integer hierarchical variables. Next, a hierarchical sampling algorithm that uses design space hierarchy to group design vectors by active design variables is developed. Then, it is demonstrated that integrating more hierarchy information in the optimization algorithms yields better optimization results for BO algorithms. Several realistic single-objective and multi-objective test problems are used for investigations. Finally, the BO algorithm is applied to a jet engine architecture optimization problem. This work shows that the developed BO algorithm can effectively solve the problem with one order of magnitude less function evaluations than NSGA-II. The algorithms and problems used in this work are implemented in the open-source Python library SBArchOpt.
description: J Glob Optim (2024)
Additional file 1 of Frailty as a predictor of mortality among patients with COVID-19: a systematic review and meta-analysis
Creators: name: Zhang, Xiao-Ming
name: Jiao, Jing
name: Cao, Jing
name: Huo, Xiao-Peng
name: Zhu, Chen
name: Wu, Xin-Juan
name: Xie, Xiao-Hua
Publisher: name: figshare
Year: 2021
Subjects: Medicine
Biological Sciences not elsewhere classified
Developmental Biology
Science Policy

description: Additional file 1: Supplemental Figure 1. Pooled prevalence of frailty among patients with COVID-19.
A photometric and spectroscopic study of the new dwarf spheroidal galaxy in Hercules
Creators: name: Adén, D.
name: Feltzing, S.
name: Koch, A.
name: Wilkinson, M. I.
name: Grebel, E. K.
name: Lundström, I.
name: Gilmore, G. F.
name: Zucker, D. B.
name: Belokurov, V.
name: Evans, N. W.
name: Faria, D.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Our aim is to provide as clean and as complete a sample as possible of red giant branch stars that are members of the Hercules dSph galaxy. With this sample we explore the velocity dispersion and the metallicity of the system. Stromgren photometry and multi-fibre spectroscopy are combined to provide information about the evolutionary state of the stars (via the Stromgren c_1 index) and their radial velocities. Based on this information we have selected a clean sample of red giant branch stars, and show that foreground contamination by Milky Way dwarf stars can greatly distort the results. Our final sample consists of 28 red giant branch stars in the Hercules dSph galaxy. Based on these stars we find a mean photometric metallicity of -2.35 dex which is consistent with previous studies. We find evidence for an abundance spread. Using those stars for which we have determined radial velocities we find a systemic velocity of 45.2 km/s with a dispersion of 3.72 km/s, this is lower than values found in the literature. Furthermore we identify the horizontal branch and estimate the mean magnitude of the horizontal branch of the Hercules dSph galaxy to be V_0=21.17, which corresponds to a distance of 147 kpc. We have shown that a proper cleaning of the sample results in a smaller value for the velocity dispersion of the system. This has implications for galaxy properties derived from such velocity dispersions.
description: 24 pages, 28 figures
The $ϕp$ bound state in the unitary coupled-channel approximation
Creators: name: Sun, Bao-Xi
name: Fan, Ying-Ying
name: Cao, Qin-Qin
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The strong attractive interaction of the $ϕ$ meson and the proton is reported by ALICE collaboration recently. The corresponding scattering length $f_0$ is given as $Re(f_0)=0.85\pm0.34(stat)\pm0.14(syst)$fm and $Im(f_0)=0.16\pm0.10(stat)\pm0.09(syst)$fm. The fact that the real part is significant in contrast to the imaginary part indicates a dominate role of the elastic scattering, whereas the inelastic process is less important. In this work, such scattering processes are inspected based on a unitary coupled-channel approach inspired by Bethe-Salpeter equation. The $ϕp$ scattering length is calculated based on this approach, and it is found that the experimental value of the $ϕp$ scattering length can be obtained only if the attractive interaction of the $ϕ$ meson and the proton is taken into account. A significant outcome of such attractive interaction is a two-pole structure in the $ϕp$ scattering amplitude. One of the pole, locating at $(1969-i283)$~MeV might correspond to $N(1895)1/2^-$ or $N(1875)3/2^-$ listed in the review of the Particle Data Group(PDG). The other one, locating at ${1949-i3}$~MeV should be a $ϕN$ bound state, which has no counterpart in the PDG data.
description: 9 pages, 2 figures and 4 tables. To be published in Communications in Theoretical Physics
Armar guardas-municipais é o avesso do Estatuto do Desarmamento
Creators: name: Fortini, Cristiana
Publisher: name: figshare
Year: 2021
Subjects: subject: 180103 Administrative Law
subject: FOS: Law

description: O debate sobre a moldura do poder de polícia e os capacitados de exercê-lo ainda estampa estudos de Direito Administrativo. Atividade complexa, criação normativa para traçar-lhe os contornos e uma série de ações administrativas entre as quais a aplicação de sanção, é indiscutível que sua manifestação visa acautelar o interesse público, ajustando o comportamento privado. Em antítese com os serviços públicos que se materializam em prestações que ambicionam provador o destinatário de comodidades.
Parent Hamiltonian for the Chiral Spin Liquid
Creators: name: Thomale, Ronny
name: Kapit, Eliot
name: Schroeter, Darrell F.
name: Greiter, Martin
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a method for constructing parent Hamiltonians for the chiral spin liquid. We find two distinct Hamiltonians for which the chiral spin liquid on a square lattice is an exact zero-energy ground state. We diagonalize both Hamiltonians numerically for 16-site lattices, and find that the chiral spin liquid, modulo its two-fold topological degeneracy, is indeed the unique ground state for one Hamiltonian, while it is not unique for the other.
description: 14 pages, 3 figures; references added
title: Fathers' Perceptions of Relationships With Young Adolescent Children: Implications for Family Therapy
Creators: name: Patrick, Tyler D.
Publisher: name: Utah State University
Year: 2006

description: This study used family systems theory as a lens to examine fathers' relationships with young adolescent children as it relates to the areas of time spent together, communication between generations, and paternal satisfaction in raising an early adolescent child. Similarities and differences of scores on the Parent Success Indicator were examined for 191 Caucasian American (n=110) and African American (n=81) fathers of 10- to 14-year-old-children. Results showed that increased amounts of time that fathers report spending with children was significantly associated with paternal satisfaction, communication between generations, fathers' use of time, parental frustration, and parental teaching. Implications for training and family therapy involving fathers were also explored.
High-Dimensional Bayesian Optimization Using Both Random and Supervised Embeddings
Creators: name: Priem, Rémy
name: Diouane, Youssef
name: Bartoli, Nathalie
name: Dubreuil, Sylvain
name: Saves, Paul
Publisher: name: arXiv
Year: 2025
Subjects: subject: Optimization and Control (math.OC)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Bayesian optimization (BO) is one of the most powerful strategies to solve computationally expensive-to-evaluate blackbox optimization problems. However, BO methods are conventionally used for optimization problems of small dimension because of the curse of dimensionality. In this paper, a high-dimensionnal optimization method incorporating linear embedding subspaces of small dimension is proposed to efficiently perform the optimization. An adaptive learning strategy for these linear embeddings is carried out in conjunction with the optimization. The resulting BO method, named efficient global optimization coupled with random and supervised embedding (EGORSE), combines in an adaptive way both random and supervised linear embeddings. EGORSE has been compared to state-of-the-art algorithms and tested on academic examples with a number of design variables ranging from 10 to 600. The obtained results show the high potential of EGORSE to solve high-dimensional blackbox optimization problems, in terms of both CPU time and the limited number of calls to the expensive blackbox simulation.
Pulsars Do Not Produce Sharp Features in the Cosmic-Ray Electron and Positron Spectra
Creators: name: John, Isabelle
name: Linden, Tim
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Pulsars are considered to be the leading explanation for the excess in cosmic-ray positrons detected by PAMELA and AMS-02. A notable feature of standard pulsar models is the sharp spectral cutoff produced by the increasingly efficient cooling of very-high-energy electrons by synchrotron and inverse-Compton processes. This spectral break has been employed to: (1) constrain the age of pulsars that contribute to the excess, (2) argue that a large number of pulsars must significantly contribute to the positron flux, and (3) argue that spectral cutoffs cannot distinguish between dark matter and pulsar models. We prove that this spectral feature does not exist -- it appears due to approximations that treat inverse-Compton scattering as a continuous, instead of as a discrete and catastrophic, energy-loss process. Astrophysical sources do not produce sharp spectral features via cooling, reopening the possibility that such a feature would provide incontrovertible evidence for dark matter.
description: 5 pages, 3 figures. Appendices add 7 pages, 13 figures. Revised version matches version accepted by PRD