cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Organizational Learning by Colleges Responding to Performance Funding: Deliberative Structures and Their Challenges
Creators: name: Jones, Sosanya M.
name: Dougherty, Kevin J.
name: Lahr, Hana Elizabeth
name: Natow, Rebecca Spiro
name: Pheatt, Lara Elaine
name: Reddy, Vikash T.
Publisher: name: Columbia University
Year: 2014
Subjects: Community college students--Education
Community colleges
Education--Finance
Education, Higher

description: This paper identifies and analyzes the deliberative structures used by colleges and universities to respond to performance funding demands and the factors that aid and hinder their working. Our data come from telephone interviews with over 200 college personnel at nine community colleges and nine public universities in three states: Indiana, Ohio, and Tennessee. The respondents were senior administrators, middle-level administrators, academic deans, and department chairs at these institutions. Our investigation found that colleges use a variety of deliberative structures, including both their general administrative structures and more specialized and evanescent structures such as strategic planning committees and accreditation review committees, to engage in organizational learning. The aids and hindrances to effective deliberation that colleges encounter principally involve organizational commitment and leadership, effective communication and collaboration, timely and relevant data, and enough time for deliberation.
Economic Effects of Federal Contributions to the U.S. School Lunch Program: Calendar Year 1972 and Fiscal Year 1974
Creators: name: Nelson, Paul E.
name: Perrin, John
name: Nelson, Paul E.
name: Perrin, John
Publisher: name: Unknown
Year: 1976
Subjects: subject: Agricultural and Food Policy
subject: Labor and Human Capital
subject: Public Economics
subject: Business receipts
subject: Output
subject: Gross national product
subject: Cash contribution
subject: Commodity contribution
subject: Input-output analysis

description: The U.S. Department of Commerce 1967 input-output model was adjusted and used to determine the economic impact of the schools' expenditure of the Federal cash contribution, and of the Federal commodity contributions to the schools. Economic impact was measured in terms of changes in business receipts, gross national product, and jobs, for calendar year 1972 and for fiscal year 1974. In each example, the amount required to fund the cash contribution, or the purchase of the commodities contributed was obtained by increasing the Federal personal income taxes of taxpayers and reducing their expenditures by an equivalent amount prior to the transfer of the contribution to the schools. For this reason, the results obtained represent NET impact.
Evolved Chiral NN+3N Hamiltonians for Ab Initio Nuclear Structure Calculations
Creators: name: Roth, Robert
name: Calci, Angelo
name: Langhammer, Joachim
name: Binder, Sven
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We discuss the building blocks for a consistent inclusion of chiral three-nucleon (3N) interactions into ab initio nuclear structure calculations beyond the lower p-shell. We highlight important technical developments, such as the similarity renormalization group (SRG) evolution in the 3N sector, a JT-coupled storage scheme for 3N matrix elements with efficient on-the-fly decoupling, and the importance truncated no-core shell model with 3N interactions. Together, these developments make converged ab initio calculations with explicit 3N interactions possible also beyond the lower p-shell. We analyze in detail the impact of various truncations of the SRG-evolved Hamiltonian, in particular the truncation of the harmonic-oscillator model space used for solving the SRG flow equations and the omission of the induced beyond-3N contributions of the evolved Hamiltonian. Both truncations lead to sizable effects in the upper p-shell and beyond and we present options to remedy these truncation effects. The analysis of the different truncations is a first step towards a systematic uncertainty quantification of all stages of the calculation.
description: 21 pages, 16 figures, 2 tables
title: Vorschlag zur Verfassung der Einzelstaaten im deutschen Bundesstaate; 1848
title: mit Rücksicht auf die Ansprüche der Zeit und unter Rückblick auf noch bestehende Verfassungs-Urkunden
titleType: Subtitle
Creators: name: Fischer, Carl
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2018

description: In Fraktur
title: The influence of students’ background on their perceptions of success, and how these perceptions influence their experiences of success in a higher education institution in Turks and Caicos Islands
Creators: name: Blackman-Smith, Rhonda
Publisher: name: University of Liverpool Repository
Year: 2023

description: The study has a focus on the phenomenon of students’ success through their individual experiences, and the role backgrounds and perceptions play in influencing their success while at college. It gives clearer insights of the participants psyche at present and their status prior to admission to the Turks and Caicos Island Community College (TCICC). It provides deeper understanding into influences in their lives that have contributed to or impeded their success. The study mainly focused on a purposeful sample of ten students who are enrolled in any Bachelor’s degree program offered at the college. It utilized a biographical life history methodology aligned with a social interpretive paradigm that is qualitative in its research and is grounded in hermeneutics. Narrative interpretive analysis was used as the focus is on the meaning participants attribute to their life experiences. Data was collected using demographic data, participatory photography and semi structured interviews; followed by a two-stage analysis process. The first stage of the analysis was the production of the individual narrative. In the second stage, the model of reflexive thematic analysis of Braun and Clark’s (2006) was utilized to guide the analysis and assist with the identification, analysis and determination of different commonalities based on categories or themes found in the data. Supportive evidence was provided through photo-elicitation images. The findings were discussed through a Bourdieusian lens, utilizing Bourdieusian metatheory with its thinking tools of habitus, capital and field as I sought to address the research questions. The findings revealed that different socioeconomic backgrounds and past experiences of students have an influence on their perception of success, and these perceptions influence their reality or personal dispositions and experiences of success at college. These perceptions also helped to shape the practices and choices of students and impacted on their thinking, personalities and prospects. This study can aid TCICC in understanding the impact experiences and context have on their students’ success and assist other higher education institutions in the region in preparing for students’ success. It can help the Department of Education assist high schools in the preparation of its students for the smooth transition into their higher education experience by providing theoretical and practical knowledge to assist high school teachers to adequately prepare students for college.
An empirical evaluation of the reliability and validity of the "reading the mind in the eyes" test
Creators: name: Higgins, Wendy C.
Publisher: name: Macquarie University
Year: 2022
Subjects: Other education not elsewhere classified

description: The Reading the Mind in the Eyes test (RMET) is a widely used measure of theory of mind (ToM) ability that was originally designed to detect ToM deficits in autistic adults and validated based on the performance of autistic individuals. Despite its popularity, there are questions regarding the test’s factor structure, whether it taps mental state reasoning components of ToM or simply emotion recognition ability, and its validity for use in non-autistic populations. In the current study, a US representative sample of 1,181 adults completed the RMET, the Toronto Alexithymia Scale, and the Autism Spectrum Quotient. Exploratory factor analysis (EFA) on the full sample and separate EFA on individuals with high and low levels of autistic traits provided evidence for a three-factor model and two overlapping, but distinct, three-factor models for individuals with high versus low levels of autistic traits. However, the RMET had poor psychometric properties for all three groups. Hierarchical regression analysis and structural equation modelling suggested that levels of alexithymia traits and autistic traits each predict performance on the RMET. I conclude that the lack of strong psychometric properties for the RMET, evidence of variation in performance across samples, and the absence of theoretical explanations for how the test captures ToM ability undermine the validity of the RMET. I argue that until these issues are satisfactorily addressed, researchers should not use the RMET as a measure of social cognition.
Hick, Jochen: Ich kenn' kein allein unter Heteros
Creators: name: Herz, Christian J.
Publisher: name: Werkstatt Schwule Theologie
Year: 1970

description: Werkstatt Schwule Theologie, Bd. 13 Nr. 1/2 (2006): Werkstatt Schwule Theologie, Band 13, Heft 1/2
Almodóvar, Pedo: Alles über meine Mutter
Creators: name: Mittler, Andreas
Publisher: name: Werkstatt Schwule Theologie
Year: 1970

description: Werkstatt Schwule Theologie, Bd. 13 Nr. 1/2 (2006): Werkstatt Schwule Theologie, Band 13, Heft 1/2
Bedenken über die §§. 18. und 19. der Grundrechte des deutschen Volks, nach welchen die Gemeinden die Lehrer an den Volkschulen besolden und wählen sollen; 1848
Creators: name: Schlegel, Konrad
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2018

description: In Fraktur
Labour contracts and performance of cocoa farms in Mbam and Kim in Cameroon
Creators: name: Ngang, Andre Nso
name: Kamdem, Cyrille Bergaly
name: Mbeh, Christian Bernard Kaldjob
name: Pedelahore, Philippe
name: Onana, Dieudonne
name: Etoa, Joephine Mireille Akoa
name: Ngang, Andre Nso
name: Kamdem, Cyrille Bergaly
name: Mbeh, Christian Bernard Kaldjob
name: Pedelahore, Philippe
name: Onana, Dieudonne
name: Etoa, Joephine Mireille Akoa
Publisher: name: Unknown
Year: 2020
Subjects: subject: Crop Production/Industries
subject: hire contract
subject: efficiency
subject: cocoa farms
subject: Mbam and Kim
subject: Cameroon

description: In order to understand the influence of the types of hired labour contracts on the performance of cocoa farms in Mbam and Kim in Cameroon, a reasoned sampling exercise was carried out to select 114 cocoa farmers. The two-stage approach using data envelope analysis (DEA) and Tobit censored models made it possible to analyse the efficiency of the farms. Two types of contracts were identified: a fixed annual contract (FAC) and a percentage sales contract (PSC) for cocoa harvested. The PSC appears to be more efficient than the FAC in terms of productivity and the allocation of inputs. In addition, the increase in the area of the farms, the number of clearings and mixed treatments are factors that contribute most to the inefficiency of these cocoa farms, while sanitary harvest, increasing the number of shade settings and cocoa tree sizes are sources of efficiency.
Light gap bullets in defocusing media with optical lattices
Creators: name: Chen, Zhiming
name: Zeng, Jianhua
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Searching for three-dimensional spatiotemporal solitons (also known as light/optical bullets) has recently attracted keen theoretical and experimental interests in nonlinear physics. Currently, optical lattices of diverse kinds have been introduced to the stabilization of light bullets, while the investigation for the light bullets of gap type -- nonlinear localized modes within the finite gap of the underlying linear Bloch spectrum -- is lacking. Herein, we address the formation and stabilization properties of such light gap bullets in periodic media with defocusing nonlinearity, theoretically and in numerical ways. The periodic media are based on two-dimensional periodic standing waves created in a coherent three-level atomic system which is driven to the regime of electromagnetically induced transparency, which in principle can also be replaced by photonic crystals in optics or optical lattices in ground-state ultracold atoms system. The temporal dispersion term is tuned to normal (positive) group velocity dispersion so that to launch the light gap bullets under self-repulsive nonlinearity; two types of such light gap bullets constructed as 3D gap solitons and vortices with topological charge m=1 within the first finite gap are reported and found to be robustly stable in the existence domains. On account of the light bullets were previously limited to the semi-infinite gap of periodic media and continuous nonlinear physical systems, the light gap bullets reported here thus supplement the missing type of three-dimensional spatiotemporal localized modes in periodic media which exhibit finite band gaps.
Interacting Ghost Dark Energy Models with Variable $G$ and $Λ$
Creators: name: Sadeghi, J.
name: Khurshudyan, M.
name: Movsisyan, A.
name: Farahani, H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we consider several phenomenological models of variable $Λ$. Model of a flat Universe with variable $Λ$ and $G$ is accepted. It is well known, that varying $G$ and $Λ$ gives rise to modified field equations and modified conservation laws, which gives rise to many different manipulations and assumptions in literature. We will consider two component fluid, which parameters will enter to $Λ$. Interaction between fluids with energy densities $ρ_{1}$ and $ρ_{2}$ assumed as $Q=3Hb(ρ_{1}+ρ_{2})$. We have numerical analyze of important cosmological parameters like EoS parameter of the composed fluid and deceleration parameter $q$ of the model.
description: 20 pages, 21 figures. arXiv admin note: substantial text overlap with arXiv:1308.1819
Introducing single Mn2+ ions into spontaneously coupled quantum dot pairs
Creators: name: Koperski, M.
name: Goryca, M.
name: Kazimierczuk, T.
name: Smoleński, T.
name: Golnik, A.
name: Wojnar, P.
name: Kossacki, P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present the photoluminescence excitation study of the self-assembled CdTe/ZnTe quantum dots doped with manganese ions. We demonstrate the identification method of spontaneously coupled quantum dots pairs containing single Mn2+ ions. As the result of the coupling, the resonant absorption of the photon in one quantum dot is followed by the exciton transfer into a neighboring dot. It is shown that the Mn2+ ion might be present in the absorbing, emitting or both quantum dots. The magnetic properties of the Mn2+ spin are revealed by a characteristic sixfold splitting of the excitonic line. The statistics of the value of this splitting is analyzed for the large number of the dots and gives the information on the maximum density of the neutral exciton wave function.
description: 5 pages, 4 figures, submitted to PRB
Noncredit Education in Community College: Students, Course Enrollments, and Academic Outcomes
Creators: name: Xu, Di
name: Ran, Xiaotao
Publisher: name: Columbia University
Year: 2015
Subjects: Education--Curricula
Academic achievement--Research
Education, Higher--Research
Community college students--Education
Community colleges
Education, Higher
Education and state
School management and organization

description: The past two decades have seen a noticeable increase in noncredit instructional offerings in postsecondary education. While noncredit programs have been advocated as a promising way to address educational equity, knowledge about the noncredit sector, such as the types of students enrolled in noncredit courses and their academic outcomes, is sparse. Drawing upon a rich dataset that includes transcript and demographic information on both for-credit and noncredit students in nine community colleges in one state, this study explores the demographic and academic profiles of students enrolled in various fields of noncredit education, their academic outcomes and progress, and potential factors that influence noncredit course completion and transition to the for-credit sector.
Survey of the Hierarchical Equations of Motion in Tensor-Train format for non-Markovian quantum dynamics
Creators: name: Mangaud, Etienne
name: Jaouadi, Amine
name: Chin, Alex
name: Desouter-Lecomte, Michèle
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: This work is a pedagogical survey about the hierarchical equations of motion and their implementation with the tensor-train format. These equations are a great standard in non-perturbative non-Markovian open quantum systems. They are exact for harmonic baths in the limit of relevant truncation of the hierarchy. We recall the link with the perturbative second order time convolution equations also known as the Bloch-Redfield equations. Some theoretical tools characterizing non-Markovian dynamics such as the non- Markovianity measures or the dynamical map are also briefly discussed in the context of HEOM simulations. The main points of the tensor-train expansion are illustrated in an example with a qubit interacting with a bath described by a Lorentzian spectral density. Finally, we give three illustrative applications in which the system-bath coupling operator is similar to that of the analytical treatment. The first example revisits a model in which population-to-coherence transfer via the bath creates a long-lasting coherence between two states. The second one is devoted to the computation of stationary absorption and emission spectra. We illustrate the link between the spectral density and the Stokes shift in situations with and without nonadiabatic interaction. Finally, we simulate an excitation transfer when the spectral density is discretized by undamped modes to illustrate a situation in which the TT formulation is more efficient than the standard one.
description: 33 pages, 16 figures
On the Study of the General Group Classification of Systems of Linear Second-Order Ordinary Differential Equations
Creators: name: Meleshko, S. V.
name: Moyo, S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: PACS: 02.30.Hq

description: In this paper we study the general group classification of systems of linear second-order ordinary differential equations inspired from earlier works and recent results on the group classification of such systems. Some interesting results and subsequent Theorem arising from this particular study are discussed here. This paper considers the study of irreducible systems of second-order ordinary differential equations.
description: 19 pages
title: Die Verantwortlichkeitsfrage; 1848
title: staatsrechtlich und politisch beleuchtet
titleType: Subtitle
Creators: name: Cnyrim, Adolph
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2018

description: Vorlageform des Erscheinungsvermerks: Frankfurt am Main. Joh. Christ. Hermann'sche Buchhandlung F. E. Suchsland. 1848.
Angular and Linear Momentum of Excited Ferromagnets
Creators: name: Yan, Peng
name: Kamra, Akashdeep
name: Cao, Yunshan
name: Bauer, Gerrit E. W.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The angular momentum vector of a Heisenberg ferromagnet with isotropic exchange interaction is conserved, while under uniaxial crystalline anisotropy the projection of the total spin along the easy axis is a constant of motion. Using Noether's theorem, we prove that these conservation laws persist in the presence of dipole-dipole interactions. However, spin and orbital angular momentum are not conserved separately. We also define the linear momentum of ferromagnetic textures. We illustrate the general principles with special reference to the spin transfer torques and identify the emergence of a non-adiabatic effective field acting on domain walls in ferromagnetic insulators.
description: 4.5 pages, 2 figures
Seedless clustering in all-sky searches for gravitational-wave transients
Creators: name: Thrane, Eric
name: Coughlin, Michael
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The problem of searching for unmodeled gravitational-wave bursts can be thought of as a pattern recognition problem: how to find statistically significant clusters in spectrograms of strain power when the precise signal morphology is unknown. In a previous publication, we showed how "seedless clustering" can be used to dramatically improve the sensitivity of searches for long-lived gravitational-wave transients. In order to manage the computational costs, this initial analysis focused on externally triggered searches where the source location and emission time are both known to some degree of precision. In this paper, we show how the principle of seedless clustering can be extended to facilitate computationally-feasible, all-sky searches where the direction and emission time of the source are entirely unknown. We further demonstrate that it is possible to achieve a considerable reduction in computation time by using graphical processor units (GPUs), thereby facilitating more sensitive searches.
description: 9 pages, 2 figures
Konflikt zwischen schwuler/lesbischer Identität und der kirchlichen homophoben Haltung
Creators: name: Herz, Christian J.
Publisher: name: Werkstatt Schwule Theologie
Year: 1970

description: Werkstatt Schwule Theologie, Bd. 13 Nr. 1/2 (2006): Werkstatt Schwule Theologie, Band 13, Heft 1/2
Leadership for Transformative Change: Lessons From Technology-Mediated Reform in Broad-Access Colleges
Creators: name: Klempin, Serena Constance
name: Karp, Melinda Jane Mechur
Publisher: name: Columbia University
Year: 2015
Subjects: Organizational change--Case studies
Education, Higher--Effect of technological innovations on
Educational leadership--Research
Community college students--Education
Community colleges
Education, Higher
Educational leadership

description: Community colleges and broad-access four-year institutions have a crucial role to play in increasing educational equity in the United States. In order to fulfill this role, however, institutions must engage in organizational change to address their low completion rates. Drawing on qualitative case studies of six colleges, this study explores the influence of different types of leadership approaches on the implementation of a technology-mediated advising reform, and assesses which types of leadership are associated with transformative organizational change. Expanding on s theory of adaptive change and Karp and Fletcher’s Readiness for Technology Adoption framework, the authors find that transformative change requires multitiered leadership with a unified commitment to a shared vision for the reform and its goals.
GEANT4 Simulation of a Scintillating-Fibre Tracker for the Cosmic-ray Muon Tomography of Legacy Nuclear Waste Containers
Creators: name: Clarkson, Anthony
name: Hamilton, David J.
name: Hoek, Matthias
name: Ireland, David G.
name: Johnstone, Russell
name: Kaiser, Ralf
name: Keri, Tibor
name: Lumsden, Scott
name: Mahon, David F.
name: McKinnon, Bryan
name: Murray, Morgan
name: Nutbeam-Tuffs, Sian
name: Shearer, Craig
name: Staines, Cassie
name: Yang, Guangliang
name: Zimmerman, Colin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Cosmic-ray muons are highly penetrative charged particles that are observed at sea level with a flux of approximately one per square centimetre per minute. They interact with matter primarily through Coulomb scattering, which is exploited in the field of muon tomography to image shielded objects in a wide range of applications. In this paper, simulation studies are presented that assess the feasibility of a scintillating-fibre tracker system for use in the identification and characterisation of nuclear materials stored within industrial legacy waste containers. A system consisting of a pair of tracking modules above and a pair below the volume to be assayed is simulated within the GEANT4 framework using a range of potential fibre pitches and module separations. Each module comprises two orthogonal planes of fibres that allow the reconstruction of the initial and Coulomb-scattered muon trajectories. A likelihood-based image reconstruction algorithm has been developed that allows the container content to be determined with respect to the atomic number Z of the scattering material. Images reconstructed from this simulation are presented for a range of anticipated scenarios that highlight the expected image resolution and the potential of this system for the identification of high-Z materials within a shielded, concrete-filled container. First results from a constructed prototype system are presented in comparison with those from a detailed simulation. Excellent agreement between experimental data and simulation is observed showing clear discrimination between the different materials assayed throughout.
description: 11 pages, 14 figures
Sugar Policy Options for the United States
Creators: name: Jesse, Edward V.
name: Zepp, Glenn A.
name: Jesse, Edward V.
name: Zepp, Glenn A.
Publisher: name: Unknown
Year: 1977
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: International Relations/Trade
subject: Production Economics
subject: Agricultural policies
subject: price cycles
subject: sugar quotas
subject: sugar beets
subject: sugar cane
subject: sweeteners
subject: tariff
subject: trade agreements

description: This report examines the probable impact of alternative U.S. sugar policy positions on U.S. sweetener producers, processors, and consumers. Policy options considered include U.S. free trade, participation in an international sugar agreement, supply management through import quotas, and direct compensatory payments. World sugar prices to 1980 are projected for the free trade option. Consumer and U.S. Treasury costs are compared for protectionist options.
Non-Markovian epidemic spreading on temporal networks
Creators: name: Han, Lilei
name: Lin, Zhaohua
name: Yin, Qingqing
name: Tang, Ming
name: Guan, Shuguang
name: Boguna, Marian
Publisher: name: arXiv
Year: 2023
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Many empirical studies have revealed that the occurrences of contacts associated with human activities are non-Markovian temporal processes with a heavy tailed inter-event time distribution. Besides, there has been increasing empirical evidence that the infection and recovery rates are time-dependent. However, we lack a comprehensive framework to analyze and understand non-Markovian contact and spreading processes on temporal networks. In this paper, we propose a general formalism to study non-Markovian dynamics on non-Markovian temporal networks. We find that, under certain conditions, non-Markovian dynamics on temporal networks are equivalent to Markovian dynamics on static networks. Interestingly, this result is independent of the underlying network topology.
Die Verfolgung von Geistlichen in Oberösterreich in der Zeit des Nationalsozialismus 1938-1945
Creators: name: Knoll, Albert
Publisher: name: Werkstatt Schwule Theologie
Year: 1970

description: Werkstatt Schwule Theologie, Bd. 13 Nr. 1/2 (2006): Werkstatt Schwule Theologie, Band 13, Heft 1/2
Impact of Changing Stellar and Planetary Magnetic Fields on (Exo)planetary Environments and Atmospheric Mass Loss
Creators: name: Gupta, Sakshi
name: Basak, Arnab
name: Nandy, Dibyendu
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The magnetic activity of a star -- which modulates the stellar wind outflow -- shapes the immediate environments of orbiting planets and induces atmospheric loss thereby impacting their habitability. We perform a detailed parameter space study using three dimensional magnetohydrodynamic simulations to understand the effect of changing stellar wind magnetic field and planetary magnetic field strengths on planetary magnetospheric topology and atmospheric losses. It is observed that the relative strengths of stellar and planetary magnetic fields play a significant role in determining the steady state magnetospheric configuration and atmospheric erosion. When the stellar field is strengthened or the planetary field is weakened, stellar magnetic field accumulation occurs at the day-side of the planet which forces the magnetopause to shift closer to its surface. The magnetotail opens up leading to the formation of Alfvén wings in the night-side wake region. We demonstrate how reconnection processes and wind conditions lead to the bifurcation of the magnetotail current sheet. With increasing stellar wind magnetic field strength, the day-side reconnection point approaches the planet thereby enhancing mass loss. We establish an analytic equation which successfully captures the modeled mass-loss rate variations of planets with changing magnetic field strengths. Our results are relevant for understanding how the interplay of stellar and planetary magnetism influence (exo)planetary environments and their habitability in star-planet systems with differing relative magnetic field strengths, or in a single star-planet system over the course of their evolution with age.
description: Submitted
Resonant dynamics of chromium condensates
Creators: name: Świsłocki, Tomasz
name: Bauer, Jarosław H.
name: Gajda, Mariusz
name: Brewczyk, Mirosław
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We numerically study the dynamics of a spinor chromium condensate in low magnetic fields. We show that the condensate evolution has a resonant character revealing rich structure of resonances similar to that already discussed in the case of alkali-atoms condensates. This indicates that dipolar resonances occur commonly in the systems of cold atoms. In fact, they have been already observed experimentally. We further simulate two recent experiments with chromium condensates, in which the threshold in spin relaxation and the spontaneous demagnetization phenomena were observed. We demonstrate that both these effects originate in resonant dynamics of chromium condensate.
description: 8 pages, 9 figures
Fishing location choice and risk preferences among small fishers – Implications for fisheries management policies
Creators: name: Sultan, Riad
name: Sultan, Riad
Publisher: name: Unknown
Year: 2020
Subjects: subject: Livestock Production/Industries
subject: risk preferences
subject: location choice
subject: two-moment decision models
subject: Just-Pope production

description: The study provides evidence for how risk preferences determine fishing location choices by artisanal fishers on the south-west coast of the island of Mauritius. Risk preference is modelled using a random linear utility framework defined over mean-standard deviation space. The study estimates expected revenue and revenue risk from the Just and Pope production function and applies the random parameter logit model to account for fisher-specific and location-specific characteristics. The findings are consistent with utility-maximising fishers, whereby the likelihood to choose a fishing location is positively associated with expected revenue and negatively related to revenue risk. Distance from fishing station to fishing grounds affects the choice of fishing location negatively. The estimated model allows heterogeneity in risk preferences and concludes that 51% of fishers can be classified as risk averse, 31% as risk seekers and the remaining as risk neutral. The study also estimates the degree of substitutability and complementarity between fishing locations based on the risk preferences of fishers and discusses the relevance of this for fisheries management policy.
Building Blocks for a Complex-Valued Transformer Architecture
Creators: name: Eilers, Florian
name: Jiang, Xiaoyi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: Most deep learning pipelines are built on real-valued operations to deal with real-valued inputs such as images, speech or music signals. However, a lot of applications naturally make use of complex-valued signals or images, such as MRI or remote sensing. Additionally the Fourier transform of signals is complex-valued and has numerous applications. We aim to make deep learning directly applicable to these complex-valued signals without using projections into $\mathbb{R}^2$. Thus we add to the recent developments of complex-valued neural networks by presenting building blocks to transfer the transformer architecture to the complex domain. We present multiple versions of a complex-valued Scaled Dot-Product Attention mechanism as well as a complex-valued layer normalization. We test on a classification and a sequence generation task on the MusicNet dataset and show improved robustness to overfitting while maintaining on-par performance when compared to the real-valued transformer architecture.
description: ICASSP 2023-2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE, 2023
Improving The Scalability By Contact Information Compression In Routing
Creators: name: Karthikeyan, V.
name: Vijayalakshmi, V. J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: The existence of reduced scalability and delivery leads to the development of scalable routing by contact information compression. The previous work dealt with the result of consistent analysis in the performance of DTN hierarchical routing (DHR). It increases as the source to destination distance increases with decreases in the routing performance. This paper focuses on improving the scalability and delivery through contact information compression algorithm and also addresses the problem of power awareness routing to increase the lifetime of the overall network. Thus implementing the contact information compression (CIC) algorithm the estimated shortest path (ESP) is detected dynamically. The scalability and release are more improved during multipath multicasting, which delivers the information to a collection of target concurrently in a single transmission from the source
description: 5 pages and 3 figures
Multimodal Multi-User Surface Recognition with the Kernel Two-Sample Test
Creators: name: Khojasteh, Behnam
name: Solowjow, Friedrich
name: Trimpe, Sebastian
name: Kuchenbecker, Katherine J.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Machine learning and deep learning have been used extensively to classify physical surfaces through images and time-series contact data. However, these methods rely on human expertise and entail the time-consuming processes of data and parameter tuning. To overcome these challenges, we propose an easily implemented framework that can directly handle heterogeneous data sources for classification tasks. Our data-versus-data approach automatically quantifies distinctive differences in distributions in a high-dimensional space via kernel two-sample testing between two sets extracted from multimodal data (e.g., images, sounds, haptic signals). We demonstrate the effectiveness of our technique by benchmarking against expertly engineered classifiers for visual-audio-haptic surface recognition due to the industrial relevance, difficulty, and competitive baselines of this application; ablation studies confirm the utility of key components of our pipeline. As shown in our open-source code, we achieve 97.2% accuracy on a standard multi-user dataset with 108 surface classes, outperforming the state-of-the-art machine-learning algorithm by 6% on a more difficult version of the task. The fact that our classifier obtains this performance with minimal data processing in the standard algorithm setting reinforces the powerful nature of kernel methods for learning to recognize complex patterns.
Congruences for Ramanujan's f and ω functions via generalized Borcherds products
Creators: name: Berg, Jen
name: Castillo, Abel
name: Grizzard, Robert
name: Kala, Vítězslav
name: Moy, Richard
name: Wang, Chongli
Publisher: name: arXiv
Year: 2013
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11F03, 11F33

description: Bruinier and Ono recently developed the theory of generalized Borcherds products, which uses coefficients of certain Maass forms as exponents in infinite product expansions of meromorphic modular forms. Using this, one can use classical results on congruences of modular forms to obtain congruences for Maass forms. In this note we work out the example of Ramanujan's mock theta functions f and ω in detail.
description: 10 pages, 1 table. To appear in The Ramanujan Journal
Resonant Inelastic X-ray Scattering from Electronic Excitations in $α$-RuCl$_3$ Nanolayers
Creators: name: Yang, Zichen
name: Wang, Lichen
name: Laha, Sourav
name: Zhao, Dong
name: Luo, Mingdi
name: Güth, Achim
name: Taniguchi, Takashi
name: Watanabe, Kenji
name: Lotsch, Bettina V.
name: Smet, Jurgen H.
name: Minola, Matteo
name: Gretarsson, Hlynur
name: Keimer, Bernhard
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present Ru $L_3$-edge resonant inelastic x-ray scattering (RIXS) measurements of spin-orbit and d-d excitations in exfoliated nanolayers of the Kitaev spin-liquid candidate RuCl$_3$. Whereas the spin-orbit excitations are independent of thickness, we observe a pronounced red-shift and broadening of the d-d excitations in layers with thickness below $\sim$7 nm. Aided by model calculations, we attribute these effects to distortions of the RuCl$_6$ octahedra near the surface. Our study paves the way towards RIXS investigations of electronic excitations in various other 2D materials and heterostructures.
Momentum transfer dependence of the proton's electric and magnetic polarizabilities
Creators: name: Hall, N. L.
name: Thomas, A. W.
name: Young, R. D.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The Q^2-dependence of the sum of the electric and magnetic polarizabilities of the proton is calculated over the range 0 \leq Q^2 \leq 6 GeV^2 using the generalized Baldin sum rule. Employing a parametrization of the F_1 structure function valid down to Q^2 = 0.06 GeV^2, the polarizabilities at the real photon point are found by extrapolating the results of finite Q^2 to Q^2 = 0 GeV^2. We determine the evolution over four-momentum transfer to be consistent with the Baldin sum rule using photoproduction data, obtaining α+ β= 13.7 \pm 0.7 \times 10^{-4}\, \text{fm}^3.
description: 4 pages, 3 figures
Evidence for Hot Fast Flow above a Solar Flare Aracade
Creators: name: Imada, S.
name: Aoki, K.
name: Hara, H.
name: Watanabe, T.
name: Harra, L. K.
name: Shimizu, T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Solar flares are one of the main forces behind space weather events. However the mechanism that drives such energetic phenomena is not fully understood. The standard eruptive flare model predicts that magnetic reconnection occurs high in the corona where hot fast flows are created. Some imaging or spectroscopic observations have indicated the presence of these hot fast flows but there have been no spectroscopic scanning observation to date to measure the two-dimensional structure quantitatively. We analyzed a flare that occurred on the west solar limb on 27 January 2012 observed by the Hinode EUV Imaging Spectrometer (EIS) and found that the hot (~30MK) fast (>500 km/s) component was located above the flare loop. This is consistent with magnetic reconnection taking place above the flare loop.
description: 11 pages, 4 figures, accepted ApJL
Context Sensitive Modeling of Cancer Drug Sensitivity
Creators: name: Chen, Bo-Juen
name: Pe'er, Dana
name: Litvin, Oren
name: Ungar, Lyle
Publisher: name: Columbia University
Year: 2015
Subjects: subject: Drugs--Dose-response relationship
subject: Drug interactions
subject: Melanoma--Treatment
subject: Cancer--Chemotherapy--Mathematical models
subject: Cancer cells--Effect of drugs on
subject: Oncology
subject: Bioinformatics
subject: FOS: Computer and information sciences

description: Recent screening of drug sensitivity in large panels of cancer cell lines provides a valuable resource towards developing algorithms that predict drug response. Since more samples provide increased statistical power, most approaches to prediction of drug sensitivity pool multiple cancer types together without distinction. However, pan-cancer results can be misleading due to the confounding effects of tissues or cancer subtypes. On the other hand, independent analysis for each cancer-type is hampered by small sample size. To balance this trade-off, we present CHER (Contextual Heterogeneity Enabled Regression), an algorithm that builds predictive models for drug sensitivity by selecting predictive genomic features and deciding which ones should—and should not—be shared across different cancers, tissues and drugs. CHER provides significantly more accurate models of drug sensitivity than comparable elastic-net-based models. Moreover, CHER provides better insight into the underlying biological processes by finding a sparse set of shared and type-specific genomic features.
Enhancing Bispectrum Estimators for Galaxy Redshift Surveys with Velocities
Creators: name: Wons, Julius
name: Dimastrogiovanni, Emanuela
name: Fasiello, Matteo
name: Hamann, Jan
name: Johnson, Matthew C.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We forecast the ability of bispectrum estimators to constrain primordial non-Gaussianity using future photometric galaxy redshift surveys. A full-sky survey with photometric redshift resolution of $σ_z/(1+z)=0.05$ in the redshift range $0.2
description: 7 pages, 1 figure, fixed typos and added references
Ein paar Worte über die österreichische Frage; [1848]
Creators: name: Unterrichter von Rechenthal, Franz
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2018

description: Unterzeichnet: Frankfurt am Main den 19. Februar 1848. Freiherr Franz Unternichter, Abgeodrneter zur Reichsversammlung in Frankfurt am Main
Governance structures and incentives in the wheat value chain in Ethiopia
Creators: name: Shikur, Zewdie Habte
name: Legesse, Belainch
name: Haji, Jema
name: Jelata, Moti
name: Shikur, Zewdie Habte
name: Legesse, Belainch
name: Haji, Jema
name: Jelata, Moti
Publisher: name: Unknown
Year: 2020
Subjects: subject: Crop Production/Industries
subject: incentives; spot markets
subject: hybrid governance structures
subject: opportunistic behaviour
subject: wheat value chain

description: Empirical studies on the effects of governance structures on incentives have still received little attention in the wheat value chain research of developing countries. The purpose of this paper is to investigate the effects of governance structures on actors’ incentives in different functional nodes of the wheat value chain. This study used personal interviews to collect primary data from input suppliers, wheat producers, wholesalers, wheat processors and co-operatives. Mixed sampling techniques (i.e. random, census and purposive) were applied to select sampling units. Descriptive statistics and the ordered logit model were used to analyse the data. This paper found that governance structures, opportunistic behaviour, asymmetric information and trust influence actors’ incentives in each functional node of the wheat value chain. Specifically, extension services, governance structures, power relations and price information have significant and positive effects on producers’ price incentives. The study provides pioneering evidence of the effects of governance structures on incentives in each functional node of the value chain. The study adds new knowledge to the existing empirical knowledge. The results recommend government to use effective policy interventions to reduce opportunistic behaviours and asymmetric information, and to adopt incentive strategies to encourage investment, and increase productivity and profitability.
Nutritional implications of dietary patterns in Mali
Creators: name: Smale, Melinda
name: Theriault, Veronique
name: Vroegindewey, Ryan
name: Smale, Melinda
name: Theriault, Veronique
name: Vroegindewey, Ryan
Publisher: name: Unknown
Year: 2020
Subjects: subject: Consumer/Household Economics
subject: diet quality
subject: dietary diversity
subject: Mali
subject: nutrition
subject: food policy

description: Mali’s population is experiencing lifestyle and dietary changes that are driven in part by urbanisation and income growth. Utilising two large-scale datasets, we bring new empirical evidence regarding whether Malians are shifting toward highly processed foods, meals purchased away from home, and sugary foods. We find that on-farm production represents only 25% of the food consumed by rural households during the hungry season, and 36% after harvest. Processed food shares are greater in urban (60%) than in rural areas (48%), and considerably higher overall than those reported for Eastern and Southern Africa, but with a lower portion of highly processed foods and negligible shares of meals consumed outside the home. Average household dietary diversity scores are higher in urban than in rural areas. Women’s and household diet diversity varies by season in both locations. About half of farm women interviewed did not meet minimum adequate dietary diversity during the lean season.