cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Critical Casimir interaction between colloidal Janus-type particles in two spatial dimensions
Creators: name: Squarcini, Alessio
name: Maciołek, Anna
name: Eisenriegler, Erich
name: Dietrich, Siegfried
Publisher: name: arXiv
Year: 2019
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study colloidal particles with chemically inhomogeneous surfaces suspended in a critical binary liquid mixture. The inhomogeneous particle surface is composed of patches with alternating adsorption preferences for the two components of the binary solvent. By describing the binary liquid mixture \emph{at} its consolute point in terms of the critical Ising model we exploit its conformal invariance in two spatial dimension. This allows us to determine exactly the universal profiles of the order parameter, the energy density, and the stress tensor as well as some of their correlation functions around a single particle for various shapes and configurations of the surface patches. The formalism encompasses several interesting configurations, including Janus particles of circular and needle shapes with dipolar symmetry and a circular particle with quadrupolar symmetry. From these single-particle properties we construct the so-called small particle operator expansion (SPOE), which enables us to obtain asymptotically exact expressions for the position- and orientation-dependent critical Casimir interactions of the particles with distant objects, such as another particle or the confining walls of a half plane, strip, or wedge, with various boundary conditions for the order parameter. In several cases we compare the interactions at large distances with the ones at close distance (but still large on the molecular scale). We also compare our analytical results for two Janus particles with recent simulation data.
description: 81 pages, 25 figures
The Economics of Contract Farming: A Credit and Investment Perspective
Creators: name: Du, Xiaoxue
name: Lu, Liang
name: Zilberman, David
name: Du, Xiaoxue
name: Lu, Liang
name: Zilberman, David
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agribusiness
subject: Farm Management
subject: contract farming
subject: vertical integration
subject: uncertainty

description: Agribusiness firms introduce new products that require agricultural production and then processing. Firms have to decide about processing capacity and assure availability of agricultural feedstock. Some of this is done in-house, and some is secured through contracts. We investigate the allocation of capital between processing capacity and in-house production, while the remainder of agricultural inputs is procured through contracts. Our results show that contract farming will increase with the cost of capital and decline when agribusiness firm has monopsony power over feedstock producers. Moreover, when supply of contracted feedstock is uncertain, expected final output will be less than under certainty and more capital will be allocated to in house production of the feedstock.
Women’s Management Strategies and Growth in Rural Female-Owned Family Businesses
Creators: name: Marshall, Maria I.
name: Peake, Whitney O.
name: Marshall, Maria I.
name: Peake, Whitney O.
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agribusiness
subject: Farm Management
subject: family business
subject: rural
subject: agency theory
subject: gender

description: Prior research indicates not only that family businesses have fewer management controls in place and are more likely to have non-economic goals for their firm but also that female-controlled businesses tend to underperform compared to male-controlled businesses. In this article, we analyze the performance effects of management controls and goals for the business across both male and female-controlled farm and rural family businesses. The results suggest that female-controlled farm and rural family businesses do not underperform their male counterparts in terms of objective or subjective assessments of performance. This is an important finding, given the mixed results across the family business literature regarding the impacts of gender on performance. Our results do indicate, however, that management controls and strategies and goals for the firm influence objective and subjective performance differently across male and female-controlled farm and rural family businesses.
The Effect of Chronic Illness on Participation in the Supplemental Nutrition Assistance and Medicaid Programs
Creators: name: Meyerhoefer, Chad D.
name: Pylypchuk, Yuriy
name: Meyerhoefer, Chad D.
name: Pylypchuk, Yuriy
Publisher: name: Unknown
Year: 2013
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Health Economics and Policy
subject: SNAP
subject: Medicaid
subject: program selection
subject: health and chronic illness

description: We examine enrollment in the U.S. Medicaid and Supplemental Nutrition Assistance Programs (SNAP) by health status and find that while SNAP-eligible adults in poor overall health and with multiple chronic conditions are more likely to jointly enroll in SNAP and Medicaid, they are less likely to enroll in SNAP alone. We also find that the conditional probability of SNAP enrollment given Medicaid participation is higher for individuals with multiple chronic conditions, indicating that the Medicaid program facilitates food assistance receipt for these individuals. As a result, both Medicaid expansions and state and federal policies that harmonize eligibility criteria or promote enrollment coordination between SNAP and Medicaid are expected to increase the number of individuals in SNAP with chronic medical conditions. Such a change in the composition of SNAP enrollees would increase the justification for using SNAP as a platform for health promotion initiatives.
Quantum corrected black holes: quasinormal modes, scattering, shadows
Creators: name: Konoplya, R. A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The spherically symmetric deformation of the Schwarzschild solution owing to the quantum corrections to gravity is known as Kazakov-Solodukhin black-hole metric. Neglecting non-spherical deformations of the background the problem was solved non-perturbatively. Here we analyze the basic characteristics of this geometry, such as: quasinormal modes and grey-body factors of fields of various spin and shadow cast by this black hole. The WKB approach and time-domain integration method, which we used for calculation of quasinormal modes, are in a good concordance. The analytical formula for quasinormal modes is deduced in the eikonal regime. The radius of shadow is decreasing when the quantum deformation is turned on.
description: 6 pages, 3 figures, revtex, some numerical data is corrected, new material is added
Growing old with multimorbidity : how our differences shape the years we live with disease
Creators: name: Lam, Anastasia
Publisher: name: The University of St Andrews
Year: 2024
Subjects: subject: Demography
subject: FOS: Sociology
subject: Population health
subject: Ageing
subject: Multimorbidity
subject: Life expectancy
subject: Health inequalities
subject: Epidemiology
subject: Intersectionality
subject: Cumulative disadvantage theory
subject: Life course

description: This thesis aims to understand how population inequalities in multimorbid life expectancy and inequalities in disease accumulation vary within and between countries and over time. Using a combination of advanced demographic methods and sociological theory, this thesis estimates and interprets the extent of inequality due to various macro- and micro-level factors on MMLE and disease accumulation across five countries with different patterns of development and ageing: South Africa, Costa Rica, Mexico, the United States, and South Korea. Based on a foundation of demographic, epidemiologic, and health transition theories and the life course approach, this thesis applied intersectionality and cumulative (dis)advantage as frameworks to understand the extent and variation of inequalities in a comparative perspective and across several non-Western and/or non-high-income settings. It finds evidence for intersectional inequalities in multimorbid life expectancy across race, education, and sex in South Africa; substantial heterogeneity within and between countries in disability-free and disabling multimorbid life expectancy in Costa Rica, Mexico, and the United States; an increasing rate of disease accumulation amongst younger birth cohorts in South Korea; and considerable disparities in older age working life expectancy with and without multimorbidity across sex, education, and place of residence in South Korea. These findings highlight the flexibility and value of these data and methods for population health and ageing research. This thesis also identifies important social groups which should be targeted in policies aimed at reducing social, structural, and health inequalities, and raises the importance of contextual factors for guiding research and policy decisions. Lastly, it suggests incorporating ageing profiles into estimates of health expectancy and expanding on the relationships between work, family, social security, education systems, and health systems, as valuable areas for future research and policy.
On the Presence of Thermal SZ Induced Signal in the First Year WMAP Temperature Maps
Creators: name: Hernandez-Monteagudo, C.
name: Rubino-Martin, J. A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using available optical and X-ray catalogues of clusters and superclusters of galaxies, we build templates of tSZ emission as they should be detected by the WMAP experiment. We compute the cross-correlation of our templates with WMAP temperature maps, and interpret our results separately for clusters and for superclusters of galaxies. For clusters of galaxies, we claim 2-5 $σ$ detections in our templates built from BCS Ebeling et al. (1998), NORAS (Boehringer et al. 2000) and de Grandi et al. (1999) catalogues. In these templates, the typical cluster temperature decrements in WMAP maps are around 15-35 $μ$K in the RJ range (no beam deconvolution applied). Several tests probing the possible influence of foregrounds in our analyses demonstrate that our results are robust against galactic contamination. On supercluster scales, we detect a diffuse component in the V & W WMAP bands which cannot be generated by superclusters in our catalogues (Einasto et al. 1994, 1997), and which is not present in the clean map of Tegmark, de Oliveira-Costa & Hamilton (2003). Using this clean map, our analyses yield, for Einasto's supercluster catalogues, the following upper limit for the comptonization parameter associated to supercluster scales: $y_{SC} < 2.18 \time s 10^{-8}$ at the 95% confidence limit.
description: MNRAS accepted. New section and minor changes included
MOESM7 of Characteristics of tiger moth (Erebidae: Arctiinae) anti-bat sounds can be predicted from tymbal morphology
Creators: name: Dowdy, Nicolas
name: Conner, William
Publisher: name: figshare
Year: 2019
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: Developmental Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Additional file 7: Comparison of normal and putatively vestigial microtymbal morphology. Exemplar microtymbal (MT) morphology of two species from closely related genera within the same CLADE (Phaegopteroid). A) tymbal of Leucanopsis cf falacra (index: 28; id: YAN13_0114), scale bar = 200 μm; inset: dorsal view of specimen, scale bar = 1 cm. B) tymbal of Elysius deceptura (index: 66; id: YAN13_0157), scale bar = 200 μm; inset: dorsal view of specimen, scale bar = 1 cm. C) represents a normal state (MT = 19; CR = 300) with regularly spaced, deep, and well-aligned microtymbals. D) represents a putatively vestigial state (MT = 10; CR = 0) with irregularly spaced, shallow, and misaligned microtymbals. A-C are oriented with the anterior side towards the left, posterior towards the right, dorsal towards the top, and ventral towards the bottom. D is oriented looking down the row of microtymbals to maximize the visibility of these shallow structures, with the ventral side towards the right, dorsal towards the left, anterior towards the top, and posterior towards the bottom.
MOESM8 of Characteristics of tiger moth (Erebidae: Arctiinae) anti-bat sounds can be predicted from tymbal morphology
Creators: name: Dowdy, Nicolas
name: Conner, William
Publisher: name: figshare
Year: 2019
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified

description: Additional file 8: Correlation matrix. Pearson correlation coefficients between measured click rate (CR), microtymbal count (MT), projected tymbal surface area (TYSA), projected thoracic surface area (THSA), and the ratio of the TYSA:THSA (T2T) are given. MT and CLADE were found to be most strongly and positively correlated (r = 0.66). TYSA, and by extension T2T, were also found to have a positive relationship with CR (r = 0.13 and r = 0.12, respectively), though relatively weak compared to MT. THSA was found to correlate only with TYSA (r = 0.51).
Pareumenes (Pareumenes) flavopetiolatus Giordani Soika 1979, stat. nov.
Creators: name: Selis, Marco
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Vespidae
Pareumenes
Pareumenes flavopetiolatus

description: Pareumenes (Pareumenes) flavopetiolatus Giordani Soika, 1979, stat. nov.
(Fig. 8)
Pareumenes sansibaricus flavopetiolatus Giordani Soika, 1979: 244, ♂
— “ Niger: Dosso ” (NHMUK).
Diagnosis. Placed in the subgenus Pareumenes due to the lateral carina of propodeum forming a sharp triangular lobe, the propodeal valvula forming a long lobe strongly exceeding the apex of the propodeum, and the elongate and petiolate T1 with a basal angle, it is recognized from the other species of the subgenus by the mostly impunctate and velvety body, the narrow and deep apical emargination of clypeus, the largely smooth posterior depression of propodeum, the long, robust and flattened lobes of the lateral carina of propodeum, the less elongate T1 (2.05× as long as apically wide) with a deep pit near the posterior end, the decolorate and lamellar apical margin of T1, the weakly reflexed apical margin of T2 forming a translucent lamella, and the silvery pubescence.
Material examined. HOLOTYPE OF PAREUMENES SANSIBARICUS FLAVOPETIOLATUS: ♂ labeled “ NIGER / Dosso / 15.x.76 // PAR / 1 // HOLOTYPUS / Pareumenes / sansibaricus / flavopetiolatus / A. Giordani Soika [red label] // [QR code] / NHMUK015610162” (NHMUK).
Distribution. Niger (Giordani Soika 1979) (Fig. 13H).
Notes. Giordani Soika (1944, 1979, 1981) used a broad concept of Pareumenes sansibaricus and divided this species into six subspecies differentiated only by pattern. Photographic examination of the holotype of P. sansibaricus flavopetiolatus however showed how this taxon presents a markedly shorter and stouter T1 (about 2.05× as long as apically wide) and a translucent apical margin of T2. Given these morphological differences, the markedly different pattern and the geographical isolation of P. sansibaricus flavopetiolatus in West Africa, this taxon is elevated to species-rank.
description: Published as part of Selis, Marco, 2025, Revision of the Afrotropical species of Pareumenes de Saussure (Hymenoptera, Vespidae, Eumeninae), pp. 205-227 in Zootaxa 5584 (2) on pages 216-217, DOI: 10.11646/zootaxa.5584.2.3, http://zenodo.org/record/14830818
More rigorous results on the Kauffman-Levin model of evolution
Creators: name: Limic, Vlada
name: Pemantle, Robin
Publisher: name: arXiv
Year: 2003
Subjects: subject: Probability (math.PR)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Mathematics
subject: FOS: Biological sciences
subject: 92D15, 60G60. (Primary)

description: The purpose of this note is to provide proofs for some facts about the NK model of evolution proposed by Kauffman and Levin. In the case of normally distributed fitness summands, some of these facts have been previously conjectured and heuristics given. In particular, we provide rigorous asymptotic estimates for the number of local fitness maxima in the case when K is unbounded. We also examine the role of the individual fitness distribution and find the model to be quite robust with respect to this.
description: Published at http://dx.doi.org/10.1214/009117904000000081 in the Annals of Probability (http://www.imstat.org/aop/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Resonant excitation of whistler waves by a helical electron beam
Creators: name: An, Xin
name: Van Compernolle, Bart
name: Bortnik, Jacob
name: Thorne, Richard M.
name: Chen, Lunjin
name: Li, Wen
Publisher: name: arXiv
Year: 2019
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Chorus-like whistler-mode waves that are known to play a fundamental role in driving radiation-belt dynamics are excited on the Large Plasma Device by the injection of a helical electron beam into a cold plasma. The mode structure of the excited whistler wave is identified using a phase-correlation technique showing that the waves are excited through a combination of Landau resonance, cyclotron resonance and anomalous cyclotron resonance. The dominant wave mode excited through cyclotron resonance is quasi-parallel propagating, whereas wave modes excited through Landau resonance and anomalous cyclotron resonance propagate at oblique angles that are close to the resonance cone. An analysis of the linear wave growth rates captures the major observations in the experiment. The results have important implications for the generation process of whistler waves in the Earth's inner magnetosphere.
Blind Robust 3-D Mesh Watermarking based on Mesh Saliency and QIM quantization for Copyright Protection
Creators: name: Hamidi, Mohamed
name: Chetouani, Aladine
name: Haziti, Mohamed El
name: Hassouni, Mohammed El
name: Cherifi, and Hocine
Publisher: name: arXiv
Year: 2019
Subjects: subject: Multimedia (cs.MM)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Due to the recent demand of 3-D models in several applications like medical imaging, video games, among others, the necessity of implementing 3-D mesh watermarking schemes aiming to protect copyright has increased considerably. The majority of robust 3-D watermarking techniques have essentially focused on the robustness against attacks while the imperceptibility of these techniques is still a real issue. In this context, a blind robust 3-D mesh watermarking method based on mesh saliency and Quantization Index Modulation (QIM) for Copyright protection is proposed. The watermark is embedded by quantifying the vertex norms of the 3-D mesh using QIM scheme since it offers a good robustness-capacity tradeoff. The choice of the vertices is adjusted by the mesh saliency to achieve watermark robustness and to avoid visual distortions. The experimental results show the high imperceptibility of the proposed scheme while ensuring a good robustness against a wide range of attacks including additive noise, similarity transformations, smoothing, quantization, etc.
description: 11 pages, 5 figures, published in IbPRIA 2019: 9th Iberian Conference on Pattern Recognition and Image Analysis. arXiv admin note: substantial text overlap with arXiv:1910.11211
Minnesota Farm Business Notes No. 223
Creators: name: Pond, George A.
name: Nodland, Truman R.
name: Cleland, S.B.
name: Waite, Warren C.
name: Garver, W.B.
name: Pond, George A.
name: Nodland, Truman R.
name: Cleland, S.B.
name: Waite, Warren C.
name: Garver, W.B.
Publisher: name: Unknown
Year: 1941
Subjects: Production Economics

description: Earnings of Minnesota Farmers in 1940; State farm management services; Feed costs and returns in hog production; Minnesota farm prices for June 1941
Newton-Hooke spacetimes, Hpp-waves and the cosmological constant
Creators: name: Gibbons, G. W.
name: Patricot, C. E.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We show explicitly how the Newton-Hooke groups act as symmetries of the equations of motion of non-relativistic cosmological models with a cosmological constant. We give the action on the associated non-relativistic spacetimes and show how these may be obtained from a null reduction of 5-dimensional homogeneous pp-wave Lorentzian spacetimes. This allows us to realize the Newton-Hooke groups and their Bargmann type central extensions as subgroups of the isometry groups of the pp-wave spacetimes. The extended Schrodinger type conformal group is identified and its action on the equations of motion given. The non-relativistic conformal symmetries also have applications to time-dependent harmonic oscillators. Finally we comment on a possible application to Gao's generalization of the matrix model.
description: 21 pages
MOESM6 of Characteristics of tiger moth (Erebidae: Arctiinae) anti-bat sounds can be predicted from tymbal morphology
Creators: name: Dowdy, Nicolas
name: Conner, William
Publisher: name: figshare
Year: 2019
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer

description: Additional file 6: Contrast matrix for Model 11. The modeled relationship between click rate and microtymbal count clusters into 3 significantly different groups: Eupseudosomoids, Callimorphoids, and all other clades. Apart from the Cisthenoid clade, all clades were found to have a significantly positive relationship between microtymbal count and click rate. The significance and the magnitude of the slope differences are relative to the unlisted clade for each contrast column. Overall, Model 11 accounts for CR as well as Model 9 (both Adj. R2 = 0.79), while requiring 3 factors to be measured (i.e., MT, CLADE, and T2T).
Origin of ultra-light fields during inflation and their suppressed non-Gaussianity
Creators: name: Achúcarro, Ana
name: Palma, Gonzalo
name: Wang, Dong-Gang
name: Welling, Yvette
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the structure of multi-field inflation models where the primordial curvature perturbation is able to vigorously interact with an ultra-light isocurvature field -- a massless fluctuation orthogonal to the background inflationary trajectory in field space. We identify a class of inflationary models where ultra-light fields can emerge as a consequence of an underlying "scaling transformation" that rescales the entire system's action and keeps the classical equations of motion invariant. This scaling invariance ensures the existence of an ultra-light fluctuation that freezes after horizon crossing. If the inflationary trajectory is misaligned with respect to the scaling symmetry direction, then the isocurvature field is proportional to this ultra-light field, and becomes massless. In addition, we find that even if the isocurvature field interacts strongly with the curvature perturbation --transferring its own statistics to the curvature perturbation-- it is unable to induce large non-Gaussianity. The reason is simply that the same mechanism ensuring a suppressed mass for the isocurvature field is also responsible for suppressing its self-interactions. As a result, in models with light isocurvature fields the bispectrum is generally expected to be slow-roll suppressed, but with a squeezed limit that differs from Maldacena's consistency relation.
description: 12 pages + 2 pages appendices
Minnesota Farm Business Notes No. 227
Creators: name: Peterson, G.L.
name: Koller, E. Fred
name: Shelley, Oren R.
name: Rutford, Skuli H.
name: Waite, Warren C.
name: Halvorson, Harlow W.
name: Peterson, G.L.
name: Koller, E. Fred
name: Shelley, Oren R.
name: Rutford, Skuli H.
name: Waite, Warren C.
name: Halvorson, Harlow W.
Publisher: name: Unknown
Year: 1941
Subjects: Agricultural Finance
Community/Rural/Urban Development

description: Factors Involved in the Difficulties of Rural Banks, 1918 to 1938; War and farm mortgage debts; Zoning Minnesota farm lands; Minnesota farm prices for October 1941
COMPASS: An Instrument for Measuring the Polarization of the CMB on Intermediate Angular Scales
Creators: name: Farese, Philip C.
name: Dall'Oglio, Giorgio
name: Gundersen, Josh
name: Keating, Brian
name: Klawikowski, Slade
name: Knox, Lloyd
name: Levy, Alan
name: O'Dell, Chris
name: Peel, Alan
name: Piccirillo, Lucio
name: Ruhl, John
name: Timbie, Peter
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: COMPASS is an on-axis 2.6 meter telescope coupled to a correlation polarimeter. The entire instrument was built specifically for CMB polarization studies. Careful attention was given to receiver and optics design, stability of the pointing platform, avoidance of systematic offsets, and development of data analysis techniques. Here we describe the experiment, its strengths and weaknesses, and the various things we have learned that may benefit future efforts to measure the polarization of the CMB.
description: To be published in the proceedings of "The Cosmic Microwave Background and its Polarization", New Astronomy Reviews, (eds. S. Hanany and K.A. Olive)
Minnesota Farm Business Notes No. 228
Creators: name: Waite, Warren C.
name: Nodland, Truman R.
name: Halvorson, Harlow W.
name: Waite, Warren C.
name: Nodland, Truman R.
name: Halvorson, Harlow W.
Publisher: name: Unknown
Year: 1941
Subjects: Production Economics

description: Farm Income in Minnesota; Change in net worth on owner-operated farms in 1940; Farm products consumed in Minnesota farm households; Minnesota farm prices for November 1941
Deconfining disordered phase in two-dimensional quantum link models
Creators: name: Cardarelli, Lorenzo
name: Greschner, Sebastian
name: Santos, Luis
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We explore the ground-state physics of two-dimensional spin-$1/2$ $U(1)$ quantum link models, one of the simplest non-trivial lattice gauge theories with fermionic matter within experimental reach for quantum simulations. Whereas in the large mass limit we observe Neél-like vortex-antivortex and striped crystalline phases, for small masses there is a transition from the striped phases into a disordered phase whose properties resemble those at the Rokhsar-Kivelson point of the quantum dimer model. This phase is characterized on ladders by boundary Haldane-like properties, such as vanishing parity and finite string ordering. Moreover, from studies of the string tension between gauge charges, we find that whereas the stripe phases are confined, the novel disordered phase present clear indications of being deconfined. Our results open exciting perspectives of studying highly non-trivial physics in quantum simulators, such as spin-liquid behavior and confinement-deconfinement transitions, without the need of explicitly engineering plaquette terms.
description: 10 pages, 9 figures, 1 table
General study and basic properties of causal symmetries
Creators: name: García-Parrado, Alfonso
name: Senovilla, José M. M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We fully develop the concept of causal symmetry introduced in Class. Quant. Grav. 20 (2003) L139. A causal symmetry is a transformation of a Lorentzian manifold (V,g) which maps every future-directed vector onto a future-directed vector. We prove that the set of all causal symmetries is not a group under the usual composition operation but a submonoid of the diffeomorphism group of V. Therefore, the infinitesimal generating vector fields of causal symmetries --causal motions-- are associated to local one-parameter groups of transformations which are causal symmetries only for positive values of the parameter --one-parameter submonoids of causal symmetries--. The pull-back of the metric under each causal symmetry results in a new rank-2 future tensor, and we prove that there is always a set of null directions canonical to the causal symmetry. As a result of this it makes sense to classify causal symmetries according to the number of independent canonical null directions. This classification is maintained at the infinitesimal level where we find the necessary and sufficient conditions for a vector field to be a causal motion. They involve the Lie derivatives of the metric tensor and of the canonical null directions. In addition, we prove a stability property of these equations under the repeated application of the Lie operator. Monotonicity properties, constants of motion and conserved currents can be defined or built using casual motions. Some illustrative examples are presented.
description: 37 pages and no figures. Final corrected version to appear Classical and Quantum Gravity
Linear unstable whistler eigenmodes excited by a finite electron beam
Creators: name: An, Xin
name: Bortnik, Jacob
name: Van Compernolle, Bart
Publisher: name: arXiv
Year: 2019
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Electron beam-generated whistler waves are widely found in the Earth's space plasma environment and are intricately involved in a number of phenomena. Here we study the linear growth of whistler eigenmodes excited by a finite gyrating electron beam, to facilitate the interpretation of relevant experiments on beam-generated whistler waves in the Large Plasma Device at UCLA. A linear instability analysis for an infinite gyrating beam is first performed. It is shown that whistler waves are excited through a combination of cyclotron resonance, Landau resonance and anomalous cyclotron resonance, consistent with our experimental results. By matching the whistler eigenmodes inside and outside the beam at the boundary, a linear growth rate is obtained for each wave mode and the corresponding mode structure is constructed. These eigenmodes peak near the beam boundary, leak out of the beam region and decay to zero far away from the beam.
Minnesota Farm Business Notes No. 229
Creators: name: Boss, Andrew
name: Pond, George A.
name: Waite, Warren C.
name: Halvorson, Harlow W.
name: Boss, Andrew
name: Pond, George A.
name: Waite, Warren C.
name: Halvorson, Harlow W.
Publisher: name: Unknown
Year: 1942
Subjects: Agribusiness
Farm Management

description: The 1942 Farm Program; Farm accounts aid in making income tax returns; Minnesota farm prices for December 1941
Minnesota Farm Business Notes No. 230
Creators: name: Jesness, Oscar B.
name: Dankers, William H.
name: Nodland, Truman R.
name: Waite, Warren C.
name: Halvorson, Harlow W.
name: Jesness, Oscar B.
name: Dankers, William H.
name: Nodland, Truman R.
name: Waite, Warren C.
name: Halvorson, Harlow W.
Publisher: name: Unknown
Year: 1942
Subjects: Agribusiness
Agricultural and Food Policy

description: An Agricultural Program for War COnditions; The effects of war conditions on the poultry industry; How much have livestock numbers increased in 1941; Minnesota farm prices for January 1942
Eigenvalue estimates for the Dirac operator and harmonic 1-forms of constant length
Creators: name: Moroianu, Andrei
name: Ornea, Liviu
Publisher: name: arXiv
Year: 2003
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C27, 58B40

description: We prove that on a compact $n$-dimensional spin manifold admitting a non-trivial harmonic 1-form of constant length, every eigenvalue $λ$ of the Dirac operator satisfies the inequality $λ^2 \geq \frac{n-1}{4(n-2)}\inf_M Scal$. In the limiting case the universal cover of the manifold is isometric to $R\times N$ where $N$ is a manifold admitting Killing spinors.
Minnesota Farm Business Notes No. 231
Creators: name: Waite, Warren C.
name: Cleland, S.B.
name: Nightingale, Edmund A.
name: Halvorson, Harlow W.
name: Waite, Warren C.
name: Cleland, S.B.
name: Nightingale, Edmund A.
name: Halvorson, Harlow W.
Publisher: name: Unknown
Year: 1942
Subjects: Demand and Price Analysis

description: Wartime Price Developments; Suggestions for meeting the labor shortage; Proposed changed in the freight rate structure and agriculture; Minnesota farm prices for February 1942
Stochastic Approximation EM for Exploratory Item Factor Analysis
Creators: name: Geis, Eugene
Publisher: name: arXiv
Year: 2019
Subjects: subject: Methodology (stat.ME)
subject: Applications (stat.AP)
subject: Computation (stat.CO)
subject: FOS: Computer and information sciences

description: The stochastic approximation EM algorithm (SAEM) is described for the estimation of item and person parameters given test data coded as dichotomous or ordinal variables. The method hinges upon the eigenanalysis of missing variables sampled as augmented data; the augmented data approach was introduced by Albert's seminal work applying Gibbs sampling to Item Response Theory in 1992. Similar to maximum likelihood factor analysis, the factor structure in this Bayesian approach depends only on sufficient statistics, which are computed from the missing latent data. A second feature of the SAEM algorithm is the use of the Robbins-Monro procedure for establishing convergence. Contrary to Expectation Maximization methods where costly integrals must be calculated, this method is well-suited for highly multidimensional data, and an annealing method is implemented to prevent convergence to a local maximum likelihood. Multiple calculations of errors applied within this framework of Markov Chain Monte Carlo are presented to delineate the uncertainty of parameter estimates. Given the nature of EFA (exploratory factor analysis), an algorithm is formalized leveraging the Tracy-Widom distribution for the retention of factors extracted from an eigenanalysis of the sufficient statistic of the covariance of the augmented data matrix. Simulation conditions of dichotomous and polytomous data, from one to ten dimensions of factor loadings, are used to assess statistical accuracy and to gauge computational time of the EFA approach of this IRT-specific implementation of the SAEM algorithm. Finally, three applications of this methodology are also reported that demonstrate the effectiveness of the method for enabling timely analyses as well as substantive interpretations when this method is applied to real data.
description: 131 pages, 57 figures, A dissertation for completion of PhD in psychometrics at Rutgers Graduate School of Education
Minnesota Farm Business Notes No. 232
Creators: name: Koller, E. Fred
name: Welch, C. Herman
name: Pond, George A.
name: Waite, Warren C.
name: Halvorson, Harlow W.
name: Koller, E. Fred
name: Welch, C. Herman
name: Pond, George A.
name: Waite, Warren C.
name: Halvorson, Harlow W.
Publisher: name: Unknown
Year: 1942
Subjects: Agribusiness
Livestock Production/Industries

description: The War and the Minnesota Dairy Industry; Carry capacity of pastures; Changes in the size of Minnesota farms; Minnesota farm prices for March 1942
Pareumenes (Pareumenes) laterorufofasciatus Giordani Soika 1944, stat. nov.
Creators: name: Selis, Marco
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Vespidae
Pareumenes
Pareumenes laterorufofasciatus

description: Pareumenes (Pareumenes) laterorufofasciatus Giordani Soika, 1944, stat. nov.
(Fig. 10)
Pareumenes sansibaricus laterorufofasciatus Giordani Soika, 1944: 157 (key), 158, ♀
— “ Delagoa: Rikatla ” (MSNVE).
Diagnosis. Placed in the subgenus Pareumenes due to the lateral carina of propodeum forming a sharp triangular lobe, the propodeal valvula forming a long lobe strongly exceeding the apex of the propodeum, and the elongate and petiolate T1 with a basal angle, it is recognized from the other species of the subgenus by the mostly impunctate and velvety body, the wide and shallow apical emargination of clypeus, the entirely striate posterior depression of propodeum, the short, flattened and right-angled lateral projections of propodeum, the less elongate T1 (2.05– 2.15× as long as apically wide) with a longitudinal furrow on the convex posterior part, and the pale brownish pubescence.
Material examined. HOLOTYPE OF PAREUMENES SANSIBARICUS LATERORUFOFASCIATUS: ♀ labeled “ Rikatla / Delagoa / (Junod) // ♀ // E. Lepelletieri Schulthess / concinnus det. 1911 // HOLOTYPUS / Pareumenes / sansibaricus / v. laterorufofasciatus / n.v. A Giordani Soika [red label]” (MSNVE).
Distribution. Mozambique (Giordani Soika 1944, 1973) (Fig. 13H).
Notes. Giordani Soika (1944, 1979, 1981) used a broad concept of Pareumenes sansibaricus and divided this species into six subspecies differentiated only by pattern. Examination of the holotype of P. sansibaricus laterorufofasciatus however revealed several morphological characters that allow to consider P. laterorufofasciatus a distinct species: wider gena, entirely striate propodeal depression, T1 more robust, longitudinally furrowed and without translucent apical margin, and pubescence of head and mesosoma brownish and less evident. These characters are shared with P. occidentalis, from which P. laterorufofasciatus is readily distinguished by the short and right-angled lateral projections of propodeum and the entirely red dorsal faces of propodeum.
description: Published as part of Selis, Marco, 2025, Revision of the Afrotropical species of Pareumenes de Saussure (Hymenoptera, Vespidae, Eumeninae), pp. 205-227 in Zootaxa 5584 (2) on page 218, DOI: 10.11646/zootaxa.5584.2.3, http://zenodo.org/record/14830818
Minnesota Farm Business Notes No. 233
Creators: name: Dowell, Austin A.
name: Engelman, Gerald
name: Halvorson, Harlow W.
name: Koller, E. Fred
name: Shelley, Oren R.
name: Waite, Warren C.
name: Hirsch, Hans G.
name: Dowell, Austin A.
name: Engelman, Gerald
name: Halvorson, Harlow W.
name: Koller, E. Fred
name: Shelley, Oren R.
name: Waite, Warren C.
name: Hirsch, Hans G.
Publisher: name: Unknown
Year: 1942
Subjects: subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business

description: Livestock Marketing Channels Used by Minnesota Farmers; Changes in milk marketing in the Twin Cities; The shift to whole milk in Minnesota; Minnesota farm prices for April 1942
On the Possibility of Quasi Small-World Nanomaterials
Creators: name: Novotny, M. A.
name: Wheeler, Shannon M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The possibility of materials that are governed by a fixed point related to small world networks is discussed. In particular, large-scale Monte Carlo simulations are performed on Ising ferromagnetic models on two different small-world networks generated from a one-dimensional spin chain. One has the small-world bond strengths independent of the length, and exhibits a finite-temperature phase transition. The other has small-world bonds built from atoms, and although there is no finite-temperature phase transition the system shows a slow power-law change of the effective critical temperature of a finite system as a function of the system size. An outline of a possible synthesis route for quasi small-world nanomaterials is presented.
description: 13 pages, 9 figures, submitted to Brazilian Journal of Physics, conference proceedings for III Brazilian Meeting on Simulational Physics (2003)
The Association Between Shift Work and Risk of Type 2 Diabetes
Creators: name: Lin, Jamie
Publisher: name: The University of Texas at Austin
Year: 2021
Subjects: Shift work
diabetes

description: Shift work is becoming increasingly prevalent throughout the world and is gradually affecting more employees due to changing economic pressures. Shift work often leads to poorer sleep, disruptions to the circadian rhythm, and lower-quality diet which all contribute to unfavourable metabolic processes that facilitates the development and progression of type 2 diabetes. This literature review summarizes studies that analyze the effects of shift work on type 2 diabetes diagnosis and the diabetes risk factors: Body Mass Index (BMI), sleep quality/duration, and diabetes-related biomarkers, and addressing areas of improvement for shift workers’ working conditions and diabetesprevention education. There is strong evidence suggesting an adverse relationship between shift work and risk of type 2 diabetes over 20 years of research. Higher prevalence of type 2 diabetes, increased BMI, and poorer sleep quality was demonstrated among shift workers in most studies, particularly more so in rotating shift workers. Half of the studies reported a positive association between shift work and diabetes-related biomarkers such as blood pressure, cholesterol, and triglycerides levels. This review revisits the effects of shift work on type 2 diabetes risk to provide a better understanding of the health consequences of disrupted circadian rhythms. Epidemiological evidence showing adverse effects of shift work on health helps emphasize the importance of policy creation, practice recommendations, and proper health education needed to protect more shift workers from type 2 diabetes risk.
Chitona incana
Creators: name: Švihla, Vladimír
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Oedemeridae
Chitona
Chitona incana

description: Chitona incana species group
 Diagnosis. Parameres preapically widened (Figs. 15, 22, 28), concave, pygidium prolonged, strongly exceeding last sternite in both sexes (Figs. 20-21, 25). This group includes three species, C. cretica, C. incana and C. macedonica sp. nov.
description: Published as part of Švihla, Vladimír, 2006, Revision of Chitona species (Coleoptera: Oedemeridae) from the eastern Mediterranean, pp. 107-121 in Acta Entomologica Musei Nationalis Pragae 46 on page 114, DOI: 10.5281/zenodo.5176666
On the Compound Structures of the Neutrino Mass and Charge
Creators: name: Sharafiddinov, Rasulkhozha S.
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: The mass and charge of a particle correspond to the most diverse form of the same regularity of the nature of this field. As a consequence, each of all possible types of charges testifies in favor of the existence of a kind of inertial mass. Therefore, to investigate these features, we have established the compound structures of mass and charge. They can explain also the availability of fundamental differences in the masses as well as in the charges of Dirac and Majorana neutrinos.
description: 5 pages, LaTex. This version is better for pdf
String and conventional order parameters in the solvable modulated quantum chain
Creators: name: Chitov, Gennady Y.
name: Pandey, Toplal
name: Timonin, P. N.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The phase diagram and the order parameters of the exactly solvable quantum 1D model are analysed. The model in its spin representation is the dimerized XY spin chain in the presence of uniform and staggered transverse fields. In the fermionic representation this model is the dimerized non-interacting Kitaev chain with a modulated chemical potential. The model has a rich phase diagram which contains phases with local and non-local (string) orders. We have calculated within the same systematic framework the local order parameters (spontaneous magnetization) and the non-local string order parameters, along with the topological winding numbers for all domains of the phase diagram. The topologically nontrivial phase is shown to have a peculiar oscillating string order with the wavenumber $q=π/2$, awaiting for its experimental confirmation.
description: 15 pages, 6 figures, 2 appendices
The Performances of Probability-Based Grain Marketing Strategies
Creators: name: O'Brien, Daniel
name: Wisner, Robert
name: O'Brien, Daniel
name: Wisner, Robert
Publisher: name: Unknown
Year: 1995
Subjects: Agricultural marketing

description: The performances of probability-based corn marketing strategies are compared for alternative corn price forecast probability information sources for the 1992-1994 time period. Price forecast probability information from Extension grain price forecasts, grain options premiums, and price forecasting models are used. The probability-based decision rules are designed to "trigger" preharvest sales when certain probability and price level goals are met. The grain marketing strategies are based on the probability of prices increasing or decreasing, of proftability goals being attained, or of other combinations of crop condition and proftability criteria being met. During the 1992-1994 period, an average futures price $2.58-$2.60 per bushel was received by the highest performing strategies, compared to an average harvest time futures price of $2.24. The performance of these strategies during this period was dependent on whether or not preharvest sales were triggered during the key yield determination period of mid-June through July.
MOESM5 of Characteristics of tiger moth (Erebidae: Arctiinae) anti-bat sounds can be predicted from tymbal morphology
Creators: name: Dowdy, Nicolas
name: Conner, William
Publisher: name: figshare
Year: 2019
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer

description: Additional file 5: Contrast matrix for Model 9. The modeled relationship between click rate and microtymbal count clusters into 3 significantly different groups: Eupseudosomoids, Callimorphoids, and all other clades. Apart from the Cisthenoid clade, all clades were found to have a significantly positive relationship between microtymbal count and click rate. The significance and the magnitude of the slope differences are relative to the unlisted clade for each contrast column. Overall, Model 9 accounts for CR well (Adj. R2 = 0.79), while only requiring 2 factors to be measured (i.e., MT and CLADE).