cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
COLDz: A High Space Density of Massive Dusty Starburst Galaxies ~1 Billion Years after the Big Bang
Creators: name: Riechers, Dominik A.
name: Hodge, Jacqueline A.
name: Pavesi, Riccardo
name: Daddi, Emanuele
name: Decarli, Roberto
name: Ivison, Rob J.
name: Sharon, Chelsea E.
name: Smail, Ian
name: Walter, Fabian
name: Aravena, Manuel
name: Capak, Peter L.
name: Carilli, Christopher L.
name: Cox, Pierre
name: da Cunha, Elisabete
name: Dannerbauer, Helmut
name: Dickinson, Mark
name: Neri, Roberto
name: Wagg, Jeff
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report the detection of CO($J$=2$\to$1) emission from three massive dusty starburst galaxies at $z$$>$5 through molecular line scans in the NSF's Karl G. Jansky Very Large Array (VLA) CO Luminosity Density at High Redshift (COLDz) survey. Redshifts for two of the sources, HDF 850.1 ($z$=5.183) and AzTEC-3 ($z$=5.298), were previously known. We revise a previous redshift estimate for the third source GN10 ($z$=5.303), which we have independently confirmed through detections of CO $J$=1$\to$0, 5$\to$4, 6$\to$5, and [CII] 158 $μ$m emission with the VLA and the NOrthern Extended Milllimeter Array (NOEMA). We find that two currently independently confirmed CO sources in COLDz are "optically dark", and that three of them are dust-obscured galaxies at $z$$>$5. Given our survey area of $\sim$60 arcmin$^2$, our results appear to imply a $\sim$6-55 times higher space density of such distant dusty systems within the first billion years after the Big Bang than previously thought. At least two of these $z$$>$5 galaxies show star-formation rate surface densities consistent with so-called "maximum" starbursts, but we find significant differences in CO excitation between them. This result may suggest that different fractions of the massive gas reservoirs are located in the dense, star-forming nuclear regions - consistent with the more extended sizes of the [CII] emission compared to the dust continuum and higher [CII]-to-far-infrared luminosity ratios in those galaxies with lower gas excitation. We thus find substantial variations in the conditions for star formation between $z$$>$5 dusty starbursts, which typically have dust temperatures $\sim$57%$\pm$25% warmer than starbursts at $z$=2-3 due to their enhanced star formation activity.
description: 30 pages, 15 figures, 8 tables, to appear in ApJ (accepted April 21, 2020) [v2: fixed one latex issue and a few typos, no content changes]
Vacuum Choices and the Predictions of Inflation
Creators: name: Armendariz-Picon, C.
name: Lim, Eugene A.
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: In the presence of a short-distance cutoff, the choice of a vacuum state in an inflating, non-de Sitter universe is unavoidably ambiguous. The ambiguity is related to the time at which initial conditions for the mode functions are specified and to the way the expansion of the universe affects those initial conditions. In this paper we study the imprint of these uncertainties on the predictions of inflation. We parametrize the most general set of possible vacuum initial conditions by two phenomenological variables. We find that the generated power spectrum receives oscillatory corrections whose amplitude is proportional to the Hubble parameter over the cutoff scale. In order to further constrain the phenomenological parameters that characterize the vacuum definition, we study gravitational particle production during different cosmological epochs.
description: 10 two-column pages, 1 figure; uses RevTeX4
Leptostylus gnomus Monne & Hoffmann 1981
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Leptostylus
Leptostylus gnomus

description: 25. Leptostylus gnomus Monné & Hoffmann, 1981
Type locality — Brazil, Minas Gerais: Pirapora. (MNRJ). Distribution — Brazil (Minas Gerais), Paraguay, Argentina.
 Leptostylus gnomus Monné & Hoffmann, 1981: 251, fig. 6; Julio et al., 2000: 38 (holotype).
description: Published as part of Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, pp. 1-760 in Zootaxa 1023 (1) on pages 1-760, DOI: 10.11646/zootaxa.946.1.1, http://zenodo.org/record/5049553
PRODUCTION FUNCTION, COST OF PRODUCTION AND ASSOCIATED OPTIMALITY LINKAGES: A TEXT BOOK SUPPLEMENT
Creators: name: Beattie, Bruce R.
name: Griffin, Wade L.
name: Beattie, Bruce R.
name: Griffin, Wade L.
Publisher: name: Unknown
Year: 1975
Subjects: Production Economics

description: The elementary algebra and geometry of the intimate relationship between the production function and cost curves, and between the associated· input and output optimality conditions, is developed for the single- and two-variable factor case. The .presentation is intended to supplement a major deficiency of-most textbook treatments.
Fashioning Identity in the Late Roman and Late Antique World: The Case of North Africa (c. AD 200-500)
Creators: name: Place, Amy E.
Publisher: name: University of Leicester
Year: 2020
Subjects: Uncategorized

description: Late Roman and late antique North Africa (c. AD 200-500) possessed a vibrant clothing culture which frequently discussed and debated sartorial practice. Echoes of dressing behaviours survive in a variety of forms – literary, visual and archaeological. While much of this material is known to scholars, clothing is often reduced to a passive entity, misrepresenting its polyvalent nature. My thesis explores how our understanding of processes of identity construction in the African diocese improves with better recognition of the North African sartorial grammar. Drawing on a range of evidence, artefacts such as Christian apologetic discourse, epigraphic documentation, Patristic correspondence and secular and religious figurative mosaics, I examine four key areas of identity: gender, Christian, elite and cultural.To achieve my aims, I employ the concept of ‘dress rhetoric’ to synthesise the diverse evidence. Adapted from Barthes’ ‘language of fashion’, my interpretative framework appreciates that dress rhetoric – in the guise of ‘written-clothing, ‘image-clothing and ‘real-clothing’ – does not always produce a consistent picture of clothing realities as individuals endeavour to advertise or repress identity traits. This does not negate contradictory interpretations, but rather reflects the multifaceted historical experience.My discussion demonstrates that dress-codes were dynamic and malleable commodities, adapted to suit changing contexts, namely, the evolving gender and Christian discourse, new modes of elite representation and the political disruption caused by the Vandal invasion. My conclusions confirm that groups exploited aspects of clothing communication and its plethora of benefits. Encoded in dress rhetoric were significant social anxieties, as well as positive ideologies and exempla. Consideration of these dress-ways highlights pertinent power structures, those who decided acceptable or transgressive clothing practice and the enduring role of dress in manifesting social mores. This, in turn, articulates the relationship between the individual and their context and, most importantly, how they negotiated their place in society.
Braneworld dynamics with the BraneCode
Creators: name: Martin, Johannes
name: Felder, Gary N.
name: Frolov, Andrei V.
name: Peloso, Marco
name: Kofman, Lev
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: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We give a full nonlinear numerical treatment of time-dependent 5d braneworld geometry, which is determined self-consistently by potentials for the scalar field in the bulk and at two orbifold branes, supplemented by boundary conditions at the branes. We describe the BraneCode, an algorithm which we designed to solve the dynamical equations numerically. We applied the BraneCode to braneworld models and found several novel phenomena of the brane dynamics. Starting with static warped geometry with de Sitter branes, we found numerically that this configuration is often unstable due to a tachyonic mass of the radion during inflation. If the model admits other static configurations with lower values of de Sitter curvature, this effect causes a violent re-structuring towards them, flattening the branes, which appears as a lowering of the 4d effective cosmological constant. Braneworld dynamics can often lead to brane collisions. We found that in the presence of the bulk scalar field, the 5d geometry between colliding branes approaches a universal, homogeneous, anisotropic strong gravity Kasner-like asymptotic, irrespective of the bulk/brane potentials. The Kasner indices of the brane directions are equal to each other but different from that of the extra dimension.
description: 38 pages, 10 figures
Computational methods for data analysis in clinical studies
Creators: name: Cherasia, Kenneth Edward
Publisher: name: No Publisher Supplied
Year: 2021

description: This dissertation presents work on three research projects in applied and computational statistics with a focus on clinical studies and medical data, including clinical trials and hospital databases. At the heart of these projects are a compression-based approach to data reduction in the supervised learning setting, a recursive-partitioning tree-based approach to exploratory subgroup discovery, and a comparative analysis of old and new ranking-based methodology for analyzing composite endpoints in right-censored time-to-event data. In the first project, we extend a method for reduction of big data in the unsupervised learning setting to the supervised learning setting for purposes of regression, model parameter estimation, and prediction. We use the example of linear regression to demonstrate the concept, examine theoretical asymptotic guarantees, and display finite-sample performance by example and simulation. We show that our method provides a very significant improvement over random sampling in the big data setting, even when the size of the reduced dataset is relatively small in comparison to the original dataset. In the second project, we extend a tree-based method for subgroup discovery to encompass new situations, including new endpoint classes and group comparisons, and provide an improved method for statistical significance quantification. Our work includes an extension of the original method to time-to-event data, which is extremely common in clinical trials when evaluating treatment effectiveness. We demonstrate the performance of resampling methodology for determining statistical significance of subgroup findings via simulation. In the third project, we present alterations to existing ordinal ranking methodology for evaluating treatment effectiveness in the composite survival endpoint setting. We present a simulation plan for comparing the performance of existing ranking-based composite outcome analysis methods and proposed alterations using realistic data generation models accounting for competing risks.
The Contribution of Research and Extension to Agricultural Productivity Growth
Creators: name: Lu, Yao-Chi
name: Cline, Philip L.
name: Lu, Yao-Chi
name: Cline, Philip L.
Publisher: name: Unknown
Year: 1975
Subjects: subject: Production Economics
subject: Productivity
subject: Research and Extension
subject: Public Finance
subject: Distributed Lags

description: The rate of return to public expenditures on research and extension aimed at increasing productivity at the farm level was estimated to be 22 percent for the 1939-72 period. It declined over time, from 25 percent for the 1939-48 period to 19. 5 percent for the 1969'" 72 period.
A fast radio burst source at a complex magnetised site in a barred galaxy
Creators: name: Xu, H.
name: Niu, J. R.
name: Chen, P.
name: Lee, K. J.
name: Zhu, W. W.
name: Dong, S.
name: Zhang, B.
name: Jiang, J. C.
name: Wang, B. J.
name: Xu, J. W.
name: Zhang, C. F.
name: Fu, H.
name: Filippenko, A. V.
name: Peng, E. W.
name: Zhou, D. J.
name: Zhang, Y. K.
name: Wang, P.
name: Feng, Y.
name: Li, Y.
name: Brink, T. G.
name: Li, D. Z.
name: Lu, W.
name: Yang, Y. P.
name: Caballero, R. N.
name: Cai, C.
name: Chen, M. Z.
name: Dai, Z. G.
name: Djorgovski, S. G.
name: Esamdin, A.
name: Gan, H. Q.
name: Guhathakurta, P.
name: Han, J. L.
name: Hao, L. F.
name: Huang, Y. X.
name: Jiang, P.
name: Li, C. K.
name: Li, D.
name: Li, H.
name: Li, X. Q.
name: Li, Z. X.
name: Liu, Z. Y.
name: Luo, R.
name: Men, Y. P.
name: Niu, C. H.
name: Peng, W. X.
name: Qian, L.
name: Song, L. M.
name: Stern, D.
name: Stockton, A.
name: Sun, J. H.
name: Wang, F. Y.
name: Wang, M.
name: Wang, N.
name: Wang, W. Y.
name: Wu, X. F.
name: Xiao, S.
name: Xiong, S. L.
name: Xu, Y. H.
name: Xu, R. X.
name: Yang, J.
name: Yang, X.
name: Yao, R.
name: Yi, Q. B.
name: Yue, Y. L.
name: Yu, D. J.
name: Yu, W. F.
name: Yuan, J. P.
name: Zhang, B. B.
name: Zhang, S. B.
name: Zhang, S. N.
name: Zhao, Y.
name: Zheng, W. K.
name: Zhu, Y.
name: Zou, J. H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Fast radio bursts (FRBs) are highly dispersed millisecond-duration radio bursts. Recent observations of a Galactic FRB suggest that at least some FRBs originate from magnetars, but the origin of cosmological FRBs is still not settled. Here we report the detection of 1863 bursts in 82 hr over 54 days from the repeating source FRB~20201124A. These observations show irregular short-time variation of the Faraday rotation measure (RM), which probes the density-weighted line-of-sight magnetic field strength, of individual bursts during the first 36 days, followed by a constant RM. We detected circular polarisation in more than half of the burst sample, including one burst reaching a high fractional circular polarisation of 75%. Oscillations in fractional linear and circular polarisations as well as polarisation angle as a function of wavelength were detected. All of these features provide evidence for a complicated, dynamically evolving, magnetised immediate environment within about an astronomical unit (au; Earth-Sun distance) of the source. Our optical observations of its Milky-Way-sized, metal-rich host galaxy reveal a barred spiral, with the FRB source residing in a low stellar density, interarm region at an intermediate galactocentric distance. This environment is inconsistent with a young magnetar engine formed during an extreme explosion of a massive star that resulted in a long gamma-ray burst or superluminous supernova.
description: 28 pages, 10 figures, updated to match the published version
SOE: SO(3)-Equivariant 3D MRI Encoding
Creators: name: He, Shizhe
name: Paschali, Magdalini
name: Ouyang, Jiahong
name: Masood, Adnan
name: Chaudhari, Akshay
name: Adeli, Ehsan
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Representation learning has become increasingly important, especially as powerful models have shifted towards learning latent representations before fine-tuning for downstream tasks. This approach is particularly valuable in leveraging the structural information within brain anatomy. However, a common limitation of recent models developed for MRIs is their tendency to ignore or remove geometric information, such as translation and rotation, thereby creating invariance with respect to geometric operations. We contend that incorporating knowledge about these geometric transformations into the model can significantly enhance its ability to learn more detailed anatomical information within brain structures. As a result, we propose a novel method for encoding 3D MRIs that enforces equivariance with respect to all rotations in 3D space, in other words, SO(3)-equivariance (SOE). By explicitly modeling this geometric equivariance in the representation space, we ensure that any rotational operation applied to the input image space is also reflected in the embedding representation space. This approach requires moving beyond traditional representation learning methods, as we need a representation vector space that allows for the application of the same SO(3) operation in that space. To facilitate this, we leverage the concept of vector neurons. The representation space formed by our method captures the brain's structural and anatomical information more effectively. We evaluate SOE pretrained on the structural MRIs of two public data sets with respect to the downstream task of predicting age and diagnosing Alzheimer's Disease from T1-weighted brain scans of the ADNI data set. We demonstrate that our approach not only outperforms other methods but is also robust against various degrees of rotation along different axes. The code is available at https://github.com/shizhehe/SOE-representation-learning.
Slanted Stixels: A way to represent steep streets
Creators: name: Hernandez-Juarez, Daniel
name: Schneider, Lukas
name: Cebrian, Pau
name: Espinosa, Antonio
name: Vazquez, David
name: Lopez, Antonio M.
name: Franke, Uwe
name: Pollefeys, Marc
name: Moure, Juan C.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: This work presents and evaluates a novel compact scene representation based on Stixels that infers geometric and semantic information. Our approach overcomes the previous rather restrictive geometric assumptions for Stixels by introducing a novel depth model to account for non-flat roads and slanted objects. Both semantic and depth cues are used jointly to infer the scene representation in a sound global energy minimization formulation. Furthermore, a novel approximation scheme is introduced in order to significantly reduce the computational complexity of the Stixel algorithm, and then achieve real-time computation capabilities. The idea is to first perform an over-segmentation of the image, discarding the unlikely Stixel cuts, and apply the algorithm only on the remaining Stixel cuts. This work presents a novel over-segmentation strategy based on a Fully Convolutional Network (FCN), which outperforms an approach based on using local extrema of the disparity map. We evaluate the proposed methods in terms of semantic and geometric accuracy as well as run-time on four publicly available benchmark datasets. Our approach maintains accuracy on flat road scene datasets while improving substantially on a novel non-flat road dataset.
description: Journal preprint (published in IJCV 2019: https://link.springer.com/article/10.1007/s11263-019-01226-9). arXiv admin note: text overlap with arXiv:1707.05397
Prefix exchanging and pattern avoidance by involutions
Creators: name: Jaggard, Aaron D.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05A05, 05A15

description: Let I_n(π) denote the number of involutions in the symmetric group S_n which avoid the permutation π. We say that two permutations α,β\in§{j} may be exchanged if for every n, k, and ordering τof j+1,...,k, we have I_n(ατ)=I_n(βτ). Here we prove that 12 and 21 may be exchanged and that 123 and 321 may be exchanged. The ability to exchange 123 and 321 implies a conjecture of Guibert, thus completing the classification of S_4 with respect to pattern avoidance by involutions; both of these results also have consequences for longer patterns. Pattern avoidance by involutions may be generalized to rook placements on Ferrers boards which satisfy certain symmetry conditions. Here we provide sufficient conditions for the corresponding generalization of the ability to exchange two prefixes and show that these conditions are satisfied by 12 and 21 and by 123 and 321. Our results and approach parallel work by Babson and West on analogous problems for pattern avoidance by general (not necessarily involutive) permutations, with some modifications required by the symmetry of the current problem.
description: Final version. Minor changes for clarity and to correct typos. Conjecture 6.4 follows from recent work of Bousquet-Melou and Steingrimsson (math.CO/0405334). 24 pages, 9 figures, 4 tables
Leptostylus hilaris Bates 1872
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Leptostylus
Leptostylus hilaris

description: 27. Leptostylus hilaris Bates, 1872
Type locality — Nicaragua, Chontales. (BMNH). Distribution — Mexico (Jalisco) to Panama.
 Leptostylus hilaris Bates, 1872: 211; 1880a: 147, pl. 11, fig. 17; 1885: 385 (distr.); Lameere, 1883: 69 (cat.); Chemsak & Linsley, 1970: 412 (lect.); Maes et al., 1994: 42 (distr.); Noguera & Chemsak, 1996: 406 (cat.).
 Leptostylus hilarius; Chemsak et al., 1992: 140 (cat., error).
description: Published as part of Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, pp. 1-760 in Zootaxa 1023 (1) on pages 1-760, DOI: 10.11646/zootaxa.946.1.1, http://zenodo.org/record/5049553
‘Careering Off’ on the Road to Independent Young Adulthoods: Can Positive Educational Psychology Help?
Creators: name: Farnbank, Peter
Publisher: name: University of Leicester
Year: 2020
Subjects: Uncategorized

description: Part A: Literature ReviewFrom Education to Adult Economic Wellbeing: A New Role for Educational Psychologists?Young people entering work from full-time education face many challenges. A broad survey of literature across several disciplines identified the impact of the rapidly changing job-markets and employability in times of economic uncertainty, complicated further by public policy and legislation. The review discusses a possible new role for educational psychologists (EPs) applying positive psychology in this context.Part B: Research ReportAchieving “Economic Well-Being” in a World of Rapid Change: Interpretative Phenomenological Analysis of the Continuing Career Journeys of Five Young Persons from First Career-DreamsThe lived-experiences and meaning-making of five mainstream young-persons (22-25) on their continuing career-journeys were explored – and their voices captured – using IPA. Findings identified systemic issues in education and public policy purporting to prepare young people adequately for the job-market. Positive new aspirations of the young people were also identified, and their links to contemporary career theories were posited.Part C: Evaluation Study“A Step Further”: An Evaluative Study of Campus-Specific Initiatives Offered by the University of Leicester’s Career Development ServiceHypotheses were proposed regarding the relationships between personality and job/career-related activities. A questionnaire explored students’ engagement of the services of the University of Leicester Career Development Service and a mixed method design was used to answer questions from empirical and service-development perspectives. Recommendations were made for developing practice, and further research.Part D: Critical Appraisal‘Careering Off’ on the Road to Independent Young Adulthoods: Can Positive Educational Psychology Help? – Reflective CritiqueThe researcher’s experience, critical reflections and learning development were discussed in detail from the perspectives of a practitioner, researcher and person. Reflections on the outcomes of the two studies were also discussed, as well as the impact of the thesis on the author, in terms of grounding conceptualisations of his own life-span development in career, learning and aspirations.
New Fluorination Methodology using a Hypervalent Fluoroiodane Reagent
Creators: name: Urbonaite, Martyna
Publisher: name: University of Leicester
Year: 2020
Subjects: Uncategorized

description: In medicinal chemistry the incorporation of fluorine into the organic framework continues to be an important strategy for the development of new pharmaceutical products because of the beneficial properties imparted by fluorine such as increased metabolic stability, increased lipophilicity and/or to tune the pharmacokinetic properties.1 The cyclic hypervalent fluoroiodane reagent 7 was introduced as a new, air and moisture stable, fluorinating reagent in 2013 and it can be prepared from cheap sources of nucleophilic fluoride. The fluoroiodane reagent 7 was used for an efficient transition metal catalysed fluorocyclisation of unsaturated carboxylic acids to prepare γ-lactones, containing tertiary alkyl fluorides. The reaction integrated a cyclisation, an aryl migration and a fluorination all in one step.In contrast to the previous work reported in the literature, the metal catalysts (Ag(I), Cu(I) and Zn(II)) were used in catalytic rather than stoichiometric amounts in chapter 2 and the reactions were performed at room temperature for 4 hours generating the desired fluorinated γ-lactones in good yields. The scope of the unsaturated carboxylic acids was expanded from geminal-disubstituted alkenes to monosubstituted, trans-disubstituted and trisubstituted alkenes. Furthermore, it was discovered that the fluoroiodane reagent 7 can be activated by hydrogen bonding to hexafluoroisopropanol and so, metal-free fluorocyclisations of unsaturated carboxylic acids were developed. The efficiency of these new reaction conditions was demonstrated by the synthesis of eight fluorinated lactones in moderate to high yields.In chapter 3, a new fluoroiodane reagent 91 containing an additional phenyl sidearm was synthesised and used to prepare a series of unsymmetrical diaryliodonium salts from Grignard reagents and arylboronic acids. The unsymmetrical diaryliodonium salts were fluorinated in the presence and absence of Cu(II) catalyst, generating fluorinated aromatics.Finally, the novel fluoroiodane reagent 91 was reacted with terminal and internal alkyne substrates to form four β-fluorovinyliodonium salts in good yields. Since the overall aim of chapter 4 was to develop new methodology for the synthesis of fluoroalkenes, a preliminary fluorination of (E)-(2-fluorooct-1-en-1-yl)(2-(1-phenylvinyl)phenyl)iodonium tetrafluoroborate was attempted in the presence of a Cu(II) catalyst.
Semistable principal G-bundles in positive characteristic
Creators: name: Langer, Adrian
Publisher: name: arXiv
Year: 2003
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14D20; 14J60

description: Let $X$ be a normal projective variety defined over an algebraically closed field $k$ of positive characteristic. Let $G$ be a connected reductive group defined over $k$. We prove that some Frobenius pull back of a principal $G$-bundle admits the canonical reduction $E_P$ such that its extension by $P\to P/R_u(P)$ is strongly semistable. Then we show that there is only a small difference between semistability of a principal $G$-bundle and semistability of its Frobenius pull back. This and the boundedness of the family of semistable torsion free sheaves imply the boundedness of semistable principal $G$-bundles.
description: 23 pages; The final version of this article will be published in the Duke Mathematical Journal, published by Duke University Press
The Rationality of Economic Policy
Creators: name: Lattimore, Ralph
name: Schuh, G. Edward
name: Thompson, Robert
name: Lattimore, Ralph
name: Schuh, G. Edward
name: Thompson, Robert
Publisher: name: Unknown
Year: 1975
Subjects: Public Economics

description: The basic premise of this paper is that economic policy as expressed in the actions of public agencies is more rational than generally believed and that attempts to understand the behavior of policy makers and public agencies may have considerable payoff in obtaining a more complete understanding of economic activity.
Fine-scale explosive energy release at sites of prospective magnetic flux cancellation in the core of the solar active region observed by Hi-C 2.1, IRIS and SDO
Creators: name: Tiwari, Sanjiv K.
name: Panesar, Navdeep K.
name: Moore, Ronald L.
name: De Pontieu, Bart
name: Winebarger, Amy R.
name: Golub, Leon
name: Savage, Sabrina L.
name: Rachmeler, Laurel A.
name: Kobayashi, Ken
name: Testa, Paola
name: Warren, Harry P.
name: Brooks, David H.
name: Cirtain, Jonathan W.
name: McKenzie, David E.
name: Morton, Richard J.
name: Peter, Hardi
name: Walsh, Robert W.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The second Hi-C flight (Hi-C2.1) provided unprecedentedly-high spatial and temporal resolution ($\sim$250km, 4.4s) coronal EUV images of Fe IX/X emission at 172 Å, of AR 12712 on 29-May-2018, during 18:56:21-19:01:56 UT. Three morphologically-different types (I: dot-like, II: loop-like, III: surge/jet-like) of fine-scale sudden-brightening events (tiny microflares) are seen within and at the ends of an arch filament system in the core of the AR. Although type Is (not reported before) resemble IRIS-bombs (in size, and brightness wrt surroundings), our dot-like events are apparently much hotter, and shorter in span (70s). We complement the 5-minute-duration Hi-C2.1 data with SDO/HMI magnetograms, SDO/AIA EUV images, and IRIS UV spectra and slit-jaw images to examine, at the sites of these events, brightenings and flows in the transition-region and corona and evolution of magnetic flux in the photosphere. Most, if not all, of the events are seated at sites of opposite-polarity magnetic flux convergence (sometimes driven by adjacent flux emergence), implying likely flux cancellation at the microflare's polarity inversion line. In the IRIS spectra and images, we find confirming evidence of field-aligned outflow from brightenings at the ends of loops of the arch filament system. In types I and II the explosion is confined, while in type III the explosion is ejective and drives jet-like outflow. The light-curves from Hi-C, AIA and IRIS peak nearly simultaneously for many of these events and none of the events display a systematic cooling sequence as seen in typical coronal flares, suggesting that these tiny brightening-events have chromospheric/transition-region origin.
description: 35 pages, 25 figures, 1 table, accepted for publication in ApJ
Investigating the Sweeter Side of Fasciola spp: Host Parasite Interactions, Glycosylation Machinery, and N-Glycan Analysis
Creators: name: Swan, Jaclyn
Publisher: name: La Trobe
Year: 2021
Subjects: subject: Parasitology
subject: 60307 Host-Parasite Interactions
subject: FOS: Biological sciences

description: Thesis submitted in total fulfilment of the requirement for the degree of Doctor of Philosophy to the School of Life Sciences, College of Science, Health and Engineering, La Trobe University, Victoria, Australia.
Leptostylus hispidulus Bates 1874
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Leptostylus
Leptostylus hispidulus

description: 28. Leptostylus hispidulus Bates, 1874
Type locality — Nicaragua, Chontales. (BMNH). Distribution — Guatemala, Nicaragua, Costa Rica.
 Leptostylus hispidulus Bates, 1874: 229; 1880a: 150 (distr.); 1885: 385 (distr.); Lameere, 1883: 69 (cat.); Chemsak & Linsley, 1970: 412 (lect.); Chemsak et al., 1992: 140 (cat.); Maes et al., 1994: 42 (distr.).
description: Published as part of Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, pp. 1-760 in Zootaxa 1023 (1) on pages 1-760, DOI: 10.11646/zootaxa.946.1.1, http://zenodo.org/record/5049553
Probing the equation of state of neutron star matter with gravitational waves from binary inspirals in light of GW170817: a brief review
Creators: name: Chaves, Andreas Guerra
name: Hinderer, Tanja
Publisher: name: arXiv
Year: 2019
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Neutron stars are unique testbeds for exploring the physics of strongly interacting matter in extreme regimes of density, temperature, and isospin that are not accessible anywhere else in the universe. The nature of neutron star matter can now be probed with gravitational-waves (GWs) from binary driven by nonlinear gravity, where phenomena such as tidal effects lead to characteristic matter-dependent GW signatures. We focus here on the dominant tidal GW imprints that were most relevant for the event GW170817. We review the role of the tidal deformability parameter, its definition, computation, and relation to the equation of state. We briefly discuss the implications of GW170817, representing the first-ever constraints on tidal deformability from GW data. Finally, we outline opportunities and challenges for probing subatomic physics with GWs, as the measurements will become more precise and will probe a diversity of the binary neutron star population in the coming years.
description: 24 pages, 6 Figures. Topical Review for Journal of Physics G Special Issue "Hadrons & Gravitational Waves After GW170817"
Optical transparency induced by a largely Purcell-enhanced quantum dot in a polarization-degenerate cavity
Creators: name: Singh, Harjot
name: Farfurnik, Demitry
name: Luo, Zhouchen
name: Bracker, Allan S.
name: Carter, Samuel G.
name: Waks, Edo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Optically-active spin systems coupled to photonic cavities with high cooperativity can generate strong light-matter interactions, a key ingredient in quantum networks. But obtaining high cooperativities for quantum information processing often involves the use of photonic crystal cavities that feature a poor optical access from the free space, especially to circularly polarized light required for the coherent control of the spin. Here, we demonstrate coupling with cooperativity as high as $8$ of an InAs/GaAs quantum dot to a fabricated bullseye cavity that provides nearly degenerate and Gaussian polarization modes for efficient optical accessing. We observe spontaneous emission lifetimes of the quantum dot as short as $80$ ps (a $\approx 15$ Purcell enhancement) and a $\approx 80\%$ transparency of light reflected from the cavity. Leveraging the induced transparency for photon switching while coherently controlling the quantum dot spin could contribute to ongoing efforts of establishing quantum networks.
Leptostylus illitus Zayas 1975
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Leptostylus
Leptostylus illitus

description: 29. Leptostylus illitus Zayas, 1975
Type locality — Cuba, Oriente: Sierra de Cristal. (Zayas). Distribution — Cuba.
 Leptostylus illitus Zayas, 1975: 244, pl. 31, fig. b; Chemsak et al., 1992: 140 (cat.).
description: Published as part of Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, pp. 1-760 in Zootaxa 1023 (1) on pages 1-760, DOI: 10.11646/zootaxa.946.1.1, http://zenodo.org/record/5049553
A Decision Making Framework for Municipal Services in Rural Areas
Creators: name: Shafferm Ron, E.
name: Stier, Jeff C.
name: Shafferm Ron, E.
name: Stier, Jeff C.
Publisher: name: Unknown
Year: 1975
Subjects: Public Economics

description: Municipal officials must make decisions concerning services without the aid of traditional market mechanisms. Suggestions are made on how to overcome these shortcomings through the use of simulation techniques. The framework developed incorporates the influence of social, economic, spatial and political components of the community on municipal service decisions.
The popular economy and its protagonists: community, cooperation, and development in Nicaragua
Creators: name: Walters, Jonah
Publisher: name: No Publisher Supplied
Year: 2021

description: The popular economy is a national economic community in Nicaragua sustained by the imaginative and material labors of worker-producers organized into households, cooperatives, and other self-managing associations. The popular economy is linked to a theory of socialist transition in which multiple economic systems, each associated with its own political subjects, compete for hegemony within an internally differentiated national economy where multiple forms of property are guaranteed by the power of the state. Based on this theory, popular economy protagonists and Sandinista intellectuals insist that voluntary associations of worker-producers estranged from the capitalist wage labor sector can enact a systemic alternative to capitalist development in place, displacing private capital from its superior social position while frustrating the social reproduction of the capitalist system. This dissertation draws on interviews and participant observation conducted between 2016 and 2020 to document the subjective experience of the popular economy as well as the state project of twenty-first century Sandinista developmentalism in which it presently enrolled. It also synthesizes existing scholarship with original archival research conducted in Managua, New York, and Pennsylvania to account for the popular economy’s emergence and development over time—especially through conflictive social movement coalitions such as the Nicaraguan Community Movement (MCN)—in urban and agrarian environments. By analyzing the popular economy in conjunctural perspective, this dissertation proposes a framework for understanding the relational and iterative processes through which diverse post-neoliberal social configurations are enacted, reproduced, and contested within specific spatial and temporal contexts.
Response to an Environmental Policy in the Agricultural Sector: An Interregional Analysis
Creators: name: Fuglestad, Paul
name: Meister, Anton D.
name: Fuglestad, Paul
name: Meister, Anton D.
Publisher: name: Unknown
Year: 1975
Subjects: Environmental Economics and Policy

description: This report presents the results of a study undertaken to analyze these impacts assuming a public policy of environmental enhancement. The environmental restrictions on the use of surface water~ wet soil development, erosion~ and disposal of livestock wastes were analyzed.
Youth citizenship : representations and meanings
Creators: name: De Melo Maia, Angélica Araújo
Publisher: name: The University of British Columbia
Year: 2017

description: This paper proposes a categorization of different approaches to youth citizenship. Considering distinct research orientations on the topic and reflecting on the description of pedagogical experiences involving citizenship education, three framings of youth citizenship are identified: a developmental approach, a critical approach and a process-based one. Each of these framings is discussed in the paper while concepts and relations are proposed in order to suggest how aspects such as conceptions of youth, the definition and scope of citizenship, agency, experience, identity, pedagogical strategies and instances towards youth-adult collaboration are framed in each of the different approaches. The ultimate goal is to provide a coherent analytical frame that can be used in future research and inform recommendations for better pedagogical practices in the field of youth citizenship education.
Can Inflating Braneworlds be Stabilized?
Creators: name: Frolov, Andrei V.
name: Kofman, Lev
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: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate scalar perturbations from inflation in braneworld cosmologies with extra dimensions. For this we calculate scalar metric fluctuations around five dimensional warped geometry with four dimensional de Sitter slices. The background metric is determined self-consistently by the (arbitrary) bulk scalar field potential, supplemented by the boundary conditions at both orbifold branes. Assuming that the inflating branes are stabilized (by the brane scalar field potentials), we estimate the lowest eigenvalue of the scalar fluctuations - the radion mass. In the limit of flat branes, we reproduce well known estimates of the positive radion mass for stabilized branes. Surprisingly, however, we found that for de Sitter (inflating) branes the square of the radion mass is typically negative, which leads to a strong tachyonic instability. Thus, parameters of stabilized inflating braneworlds must be constrained to avoid this tachyonic instability. Instability of "stabilized" de Sitter branes is confirmed by the BraneCode numerical calculations in the accompanying paper hep-th/0309001. If the model's parameters are such that the radion mass is smaller than the Hubble parameter, we encounter a new mechanism of generation of primordial scalar fluctuations, which have a scale free spectrum and acceptable amplitude.
description: 7 pages, RevTeX 4.0
Leptostylus incertus
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Leptostylus
Leptostylus incertus

description: 30. Leptostylus incertus (Bates, 1881)
Type locality — Nicaragua, Chontales. (BMNH). Distribution — Guatemala, Nicaragua.
 Oedopeza incerta Bates, 1881a: 176, pl. 12, fig. 9; Lameere, 1883: 70 (cat.); Chemsak & Linsley, 1970: 415 (lect.).
 Leptostylus incertus; Bates, 1885: 391, 410; Chemsak et al., 1992: 140 (cat.); Maes et al., 1994: 42 (distr.).
description: Published as part of Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, pp. 1-760 in Zootaxa 1023 (1) on pages 1-760, DOI: 10.11646/zootaxa.946.1.1, http://zenodo.org/record/5049553
U JAYMES KONSEPSIYASIDA DINNING TA'RIFI VA DINIY TAJRIBAGA NISBATAN YONDASHUVLAR
Creators: name: Boboyorova Sevara
Publisher: name: Zenodo
Year: 2025

description: Annotatsiya: Jamesning ilmiy yondashuvlari, ayniqsa, uning psixologiya, pragmatizm va diniy tajriba haqidagi fikrlari hozirgi kunda ham o‘z ahamiyatini yo‘qotmagan. Quyidagi maqolada dolzarbligi va ilmiy faoliyati haqida to‘xtalamiz. Uning psixоlogiya, pragmatizm, diniy tajriba va shaxsiyat haqidagi qarashlari ilm-fan, falsafa va diniy tadqiqotlar sohalarida katta ahamiyatga ega
The Speech of Bangabandhu Sheikh Mujibur Rahman on 7th March 1971: A Historical Analysis
Creators: name: Md. Shamsuddoha
Publisher: name: figshare
Year: 2020
Subjects: subject: 160603 Comparative Government and Politics
subject: FOS: Political science

description: The 20th century witnessed a lot of nationalist movements which gave the birth of many independent states. All these nationalist movements were led by some charismatic leaders who could convince, organize and motivate people by their character, speech, and wonderful leadership. Bangabandhu Sheikh Mojibur Rahman was one of them. He was such a leader who opened the eyes of the East Pakistani people about their right, and led them towards independence. He could ignite the light of the nationalist spirit among the people by his public speaking capacity and heart-rending speech. His historic speech of 7th March 1971 is often considered as one of the most influential speeches over the world. UNESCO recognized the 7th March speech of Bangabandhu Sheikh Mujibur Rahman as part of the world’s documentary heritage in 2017. This study sheds light on the historical importance of that speech. An extensive historical background of this speech will also be demonstrated based on the documents of the liberation war of Bangladesh and other reliable sources. This study shows that the 7th March speech of Bangabandhu paved the way for independent Bangladesh in 1971.
The Economic Impacts of Off-Road Vehicles on Rural Economies: The Upper Great Lakes Case
Creators: name: Robertson, Marc D.
name: Bishop, Richard C.
name: Robertson, Marc D.
name: Bishop, Richard C.
Publisher: name: Unknown
Year: 1975
Subjects: Resource /Energy Economics and Policy

description: The Upper Great Lakes Region, composed of 119 contiguous, predominantly rural counties in northern Michigan, Minnesota, and Wisconsin,- has been subject to the same familiar trends as much of rural America during recent years. Among these have been low and even negative rates of population growth; higher than average unemployment rates; lower per capita incomes than neighboring urban areas';· and lagging medical, educational, and other services. At the same time, the recreational attractiveness of the region has made it one of the major national focal points for. the post-World War II growth in outdoor recreation, including the recreational use of off-road vehicles.
Effects of non-standard neutrino interactions on MSW-LMA solution to the solar neutrino problem
Creators: name: Guzzo, M. M.
name: de Holanda, P. C.
name: Peres, O. L. G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We show that the non-standard neutrino interactions can play a role as sub-leading effect on the solar neutrino oscillations. We observe that very small flavor universality violations of order of 0.1-0.2 G_F is sufficient to induce two phenomena: suppression of the eletronic neutrino earth regeneration and a shift of the resonance layer in the sun. We obtain these phenomena even in the absence of any flavor changing interactions. We discuss their consequences and confront with a global analysis of solar+KamLAND results. We conclude that a new compatibility region in the Delta m^2 x tan^2θ, which we call very low Large Mixing Angle region, is found for Delta m^2 ~ 1e-5 eV^2 and tan^2θ= 0.45.
description: references added, small changes in text, some changes in predictions of KamLAND future sensitivity to NSNI parameters
Facile synthesis of tetrazoles catalyzed by the new copper nano-catalyst
Creators: name: Vahideh Khorramabadi
name: Davood Habibi
name: Somayyeh Heydari
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology

description: Despite various methods for preparation of tetrazoles, they are suffering from some disadvantages such as low yield, long reaction times and harsh reaction conditions, and there are still high demands to improve the common procedures to solve problems. So, the new copper nano-catalyst was prepared by coating of the Fe3O4 magnetic nanoparticles with tetraethyl orthosilicate, functionalization with 3-chloropropyltrimethoxysilane and 3-mercapto-1,2,4-triazole ligands as well as the subsequent complexation with CuCl2. The obtained catalyst was then characterized by different methods (ICP, XRD, EDX, SEM, TEM, TG-DTA and VSM) and applied as a heterogeneous nano-catalyst for the synthesis of diverse tetrazoles from the reaction of various aromatic amines with sodium azide and triethyl orthoformate in solvent-free condition at 100°C in good to high yields.