cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Arctic ecosystem restoration with native tundra bryophytes
Creators: name: Lamarre, Jasmine JM
name: Dhar, Amalesh
name: Naeth, M. Anne
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Cell Biology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Plant Biology

description: Bryophytes are ecologically essential to northern ecosystem restoration after disturbance. In this study, native bryophytes were used to revegetate two Arctic restoration sites. Different propagation types (small, medium, large fragments) and substrates (crushed rock, lake sediment, processed kimberlite in Canada; volcanic silt loam and crushed lava rock in Iceland) with two erosion control treatments (with and without cheesecloth) were evaluated. After two growing seasons, large bryophyte fragments resulted in the greatest density and total and live cover with erosion control and medium fragments resulted in the highest density and species occurrence without erosion control. Erosion control significantly increased live cover, total cover, species occurrence, and density, including a tempering effect on soil volumetric water content and temperature. Substrates with more heterogeneous surfaces (crushed rock, volcanic silt loam, crushed lava rock) yielded higher live cover, density, and spontaneous colonization than more homogeneous substrates (processed kimberlite, lake sediment) and can be more suitable for use in arctic ecosystems revegetation. The positive outcomes in both Canada and Iceland led to the conclusion that bryophyte propagation with large to medium fragments, erosion control with cheesecloth, and substrates with heterogeneous surfaces would be effective restoration approaches where bryophyte revegetation is a focus.
The first law of AdS black holes in higher curvature gravity
Creators: name: Koga, Jun-ichirou
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider the first law of black hole thermodynamics in an asymptotically anti-de Sitter spacetime in the class of gravitational theories whose gravitational Lagrangian is an arbitrary function of the Ricci scalar. We first show that the conserved quantities in this class of gravitational theories constructed through conformal completion remain unchanged under the conformal transformation into the Einstein frame. We then prove that the mass and the angular momenta defined by these conserved quantities, along with the entropy defined by the Noether charge, satisfy the first law of black hole thermodynamics, not only in Einstein gravity but also in the higher curvature gravity within the class under consideration. We also point out that it is naturally understood in the symplectic formalism that the mass satisfying the first law should be necessarily defined associated with the timelike Killing vector nonrotating at infinity. Finally, a possible generalization into a wider class of gravitational theories is discussed.
description: v.1: 12 pages, no figures. v.2: improved descriptions on non-rotating timelike Killing vector (in the symplectic formalism, in particular) and asymptotic conditions at infinity. minor corrections. a reference added. 13 pages now
[Brev til Johan Ernst Gunnerus]
Creators: name: Kempe, Eiler Hagerup
name: Gunnerus, Johan Ernst
Publisher: name: Unknown
Year: 1766

description: Kempe oversender noen planter til Gunnerus
description: Dahl nr.: 627. Polydoc nr. 1: 399. Polydoc nr. 2: 47.
One-Parameter Families of Operators in $\mathbb{C}$
Creators: name: Raich, Andrew
Publisher: name: arXiv
Year: 2005
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 32W50 (Primary), 32W30, 32T25 (Secondary)

description: We develop classes of one-parameter families (OPF) of operators on $C^\infty_c(\mathbb{C})$ which characterize the behavior of operators associated to the $\bar\partial$-problem in $L^2(\mathbb{C},e^{-2p})$ where $p$ is a subharmonic, nonharmonic polynomial. We prove that an order 0 OPF operator extends to a bounded operator from $L^q(\mathbb{C})$ to itself, $1
description: v2: 18 pages. AMS-LaTeX. Updated references, numerous errors/typos fixed
The effects of charmonium on the properties of the $1^{++}$ hidden charm poles in effective field theory
Creators: name: Cincioglu, E.
name: Ozpineci, A.
name: Yilmaz, D. Yildirim
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this study, the properties of the $J^{PC}=1^{++}$ hidden charm poles are analyzed under the variation of the bare 2P charmonium mass within the effective field theory proposed in Ref.[1]. The main focus of the current work is on the pole trajectory of the $χ_{c1}(2P)$ charmonium dressed by the $D \bar{D}^*$ meson loops. It is shown that the trajectories of the pole change radically for values of the bare charmonium mass above a certain value and also depending on how close the pole is to the threshold.
description: 24 pages, 2 figures
Forward Jet Production in Deep Inelastic Scattering at HERA
Creators: name: H1 Collaboration
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The production of forward jets has been measured in deep inelastic ep collisions at HERA. The results are presented in terms of single differential cross sections as a function of the Bjorken scaling variable (x_{Bj}) and as triple differential cross sections d^3 σ/ dx_{Bj} dQ^2 dp_{t,jet}^2, where Q^2 is the four momentum transfer squared and p_{t,jet}^2 is the squared transverse momentum of the forward jet. Also cross sections for events with a di-jet system in addition to the forward jet are measured as a function of the rapidity separation between the forward jet and the two additional jets. The measurements are compared with next-to-leading order QCD calculations and with the predictions of various QCD-based models.
description: 27 pages, 10 figures, 4 tables
Breaking bread with the dead: The Australian "Bluebird" nurses of World War One seen through the lens of microhistory
Creators: name: Rogers, Irene
Publisher: name: CQUniversity
Year: 2024
Subjects: classificationCode: 420599
subject: Nursing not elsewhere classified

description: Through narrative inquiry and microhistory, this thesis contextualises and explores the collective and individual life experiences of the Bluebirds who were a group of twenty trained Australian nurses who served on the Western Front during World War 1. In July 1916, the Bluebirds left Australia aboard the Australian Hospital Ship Kanowna. They were under contract with The New South Wales Division of the Red Cross Society to work for the Red Cross Society or the French military authorities and called the Bluebirds because of their distinctive uniforms. The Bluebirds became the only group of trained nurses sent to the front by any Red Cross branch in Australia during WW1. Whilst some of their achievements during WW1 have been acknowledged, little is known about what may have shaped the experiences these nurses had and the lives they led before, and after, the war. Microhistory provides an opportunity to approach the subjects from a different direction, to listen to a variety of voices and to use the resulting paradoxes as a way to increase historical understanding. Investigating and exploring the personal experiences of the Bluebird nurses has enabled stories to emerge that can potentially illuminate and inspire. The detailed evidence presented, reveals new insights as well as variously supporting, supplementing or even calling into question some of the larger narratives of the lives of Australian women at war and at home.
[Brev til Johan Ernst Gunnerus]
Creators: name: Tonning, Henrik
name: Gunnerus, Johan Ernst
Publisher: name: Unknown
Year: 1766

description: Reiserapport fra Uppsala. Redegjørelse for div. regler og forordninger i Sverige, bl.a. forbudet mot å drikke kaffe, kakao m.m.
description: Dahl nr.: 636. Polydoc nr. 1: 401. Polydoc nr. 2: 49.
ปัญหาการฝึกงานและทักษะในการทำงาน ของนักศึกษาสาขาวิชาภาษาญี่ปุ่น มหาวิทยาลัยธรรมศาสตร์
Creators: name: ศิริวรรณ มุนินทรวงศ์
Publisher: name: สมาคมญี่ปุ่นศึกษาแห่งประเทศไทย
Year: 2018
Subjects: การฝึกงาน
ทักษะการทำงาน
นักศึกษาสาขาวิชาภาษาญี่ปุ่น

description: วารสารเครือข่ายญี่ปุ่นศึกษา, 8, พิเศษ, 206-218
Evolution of central pattern generators for the control of a five-link bipedal walking mechanism
Creators: name: Baydin, Atilim Gunes
Publisher: name: arXiv
Year: 2008
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences
subject: I.2.2; I.2.9
subject: 92B20, 92B25, 70E60, 68T05, 68U20

description: Central pattern generators (CPGs), with a basis is neurophysiological studies, are a type of neural network for the generation of rhythmic motion. While CPGs are being increasingly used in robot control, most applications are hand-tuned for a specific task and it is acknowledged in the field that generic methods and design principles for creating individual networks for a given task are lacking. This study presents an approach where the connectivity and oscillatory parameters of a CPG network are determined by an evolutionary algorithm with fitness evaluations in a realistic simulation with accurate physics. We apply this technique to a five-link planar walking mechanism to demonstrate its feasibility and performance. In addition, to see whether results from simulation can be acceptably transferred to real robot hardware, the best evolved CPG network is also tested on a real mechanism. Our results also confirm that the biologically inspired CPG model is well suited for legged locomotion, since a diverse manifestation of networks have been observed to succeed in fitness simulations during evolution.
description: 11 pages, 9 figures; substantial revision of content, organization, and quantitative results
Glacier-specific factors drive differing seasonal and interannual dynamics of Nunatakassaap Sermia and Illullip Sermia, Greenland
Creators: name: Carr, J.R.
name: Carr, E.
name: Ross, N.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Neuroscience
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Mental Health

description: Accelerated ice discharge from marine-terminating outlet glaciers accounted for ~48 percent of ice loss from Greenland between 1992 and 2018, and the northwest has been the largest source of dynamic ice loss. Here, we assess the dynamics of two neighboring northwest Greenland glaciers, Nunatakassaap Sermia (NS) and Illullip Sermia (IS), for 2000 to 2020. Retreat rates at NS far exceeded those at IS, and NS accelerated and thinned substantially following the loss of its ice tongue. This was initially driven by loss of buttressing, followed by feedbacks between thinning, surface slope, and effective pressure, as NS retreated into a deeper and wider section of its fjord. At IS, acceleration and thinning were limited due to its location on a bedrock ridge. At NS, net retreat occurred when seasonal retreat persisted through the winter, whereas at IS it resulted from higher summer retreat rates. The timing of seasonal cycles in frontal positions and ice velocities differed markedly between NS and IS: we suggest that ice velocities respond to seasonal meltwater availability at IS and terminus position variations at NS. Overall, our results demonstrate that the dynamic behavior of NS and IS differs markedly at seasonal to decadal timescales and highlight the importance of glacier-specific factors.
Optical normal-mode-induced phonon-sideband splitting in photon-blockade effect
Creators: name: Deng, Hong
name: Zou, Fen
name: Huang, Jin-Feng
name: Liao, Jie-Qiao
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the photon-blockade effect in a loop-coupled optomechanical system consisting of two cavity modes and one mechanical mode. Here, the mechanical mode is optomechanically coupled to the two cavity modes, which are coupled with each other via a photon-hopping interaction. By treating the photon-hopping interaction as a perturbation, we obtain the analytical results of the eigenvalues and eigenstates of the system in the subspaces associated with zero, one, and two photons. We find a phenomenon of optical normal-mode-induced phonon-sideband splitting in the photon-blockade effect by analytically and numerically calculating the second-order correlation functions of the two cavity modes. This work not only presents a method to choose optimal driving frequency for photon blockade by tuning the photon-hopping interaction, but also provides a means to characterize the normal-mode splitting with cavity photon statistics.
description: 14 pages, 6 figures
อาชีพสำหรับนักศึกษาวิชาเอกภาษาญี่ปุ่นและความพร้อมในการเข้าสู่อาชีพ: กรณีศึกษาหัวข้อสำหรับนักศึกษาชั้นปีที่ 1 และ 2
Creators: name: ทัศนีย์ เมธาพิสิฐ
Publisher: name: สมาคมญี่ปุ่นศึกษาแห่งประเทศไทย
Year: 2018
Subjects: ทรัพยากรบุคคลระดับสากล
ความพร้อมสู่อาชีพ
การรู้จักตนเอง
การพูดคุย
แผนพัฒนาตนเอง

description: วารสารเครือข่ายญี่ปุ่นศึกษา, 8, พิเศษ, 219-233
Remarks on anomalous symmetries of C*-algebras
Creators: name: Jones, Corey
Publisher: name: arXiv
Year: 2020
Subjects: subject: Operator Algebras (math.OA)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: For a group $G$ and $ω\in Z^{3}(G, \text{U}(1))$, an $ω$-anomalous action on a C*-algebra $B$ is a $\text{U}(1)$-linear monoidal functor between 2-groups $\text{2-Gr}(G, \text{U}(1), ω)\rightarrow \underline{\text{Aut}}(B)$, where the latter denotes the 2-group of $*$-automorphisms of $B$. The class $[ω]\in H^{3}(G, \text{U}(1))$ is called the anomaly of the action. We show for every $n\ge 2$ and every finite group $G$, every anomaly can be realized on the stabilization of a commutative C*-algebra $C(M)\otimes \mathcal{K}$ for some closed connected $n$-manifold $M$. We also show that although there are no anomalous symmetries of Roe C*-algebras of coarse spaces, for every finite group $G$, every anomaly can be realized on the Roe corona $C^{*}(X)/\mathcal{K}$ of some bounded geometry metric space $X$ with property $A$.
Replica study of pinned bubble crystals
Creators: name: Côté, R.
name: Li, Mei-Rong
name: Faribault, A.
name: Fertig, H. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In higher Landau levels ($N>1$), the ground state of the two-dimensional electron gas in a strong perpendicular magnetic field evolves from a Wigner crystal for small filling $ν$ of the partially filled Landau level, into a succession of bubble states with increasing number of guiding centers per bubble as $ν$ increases, to a modulated stripe state near $ν=0.5$. In this work, we compute the frequency-dependent longitudinal conductivity $% σ_{xx}(ω) $ of the Wigner and bubble crystal states in the presence of disorder. We apply an elastic theory to the crystal states which is characterized by a shear and a bulk modulus. We obtain both moduli from the microscopic time-dependent Hartree-Fock approximation. We then use the replica and Gaussian variational methods to handle the effects of disorder. Within the semiclassical approximation we get the dynamical conductivity as well as the pinning frequency as functions of the Landau level filling factor and compare our results with recent microwave experiments.
description: 19 pages and 6 eps figures
Online supplement on the self-rated severe exposure of child maltreatment and behavioural problems instrument from the LoRDIA studies
Creators: name: Kalin, Torbjörn
name: Ahlgren, Thorbjörn
name: Gerdner, Arne
Publisher: name: figshare
Year: 2021
Subjects: subject: 160799 Social Work not elsewhere classified
subject: FOS: Sociology
subject: 160701 Clinical Social Work Practice

description: Online supplement on the self-rated severe exposure of child maltreatment and behavioural problems instrument from the LoRDIA studies. Detailed description on each indicator used for the SSE instrument.
Drivers of soil temperature variation in alpine lichen heaths and shrub vegetation during the summer
Creators: name: Aartsma, Peter
name: Odland, Arvid
name: Reinhardt, Stefanie
name: Renssen, Hans
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Plant Biology

description: Lichen heaths are decreasing in abundance in alpine and Arctic areas because of an increased competition with shrubs. This shift in vegetation might have important consequences for the soil temperature. The aim of this study is to find the drivers of the variation in soil temperature below lichen heaths and shrubs. Moreover, we want to gain more insight in the variability of the soil temperature below lichen heaths. We measured the soil temperature in thirty lichen plots and fifteen shrub plots in an alpine area in southern Norway during July and August 2019. We applied several treatments to study the drivers behind the variation in soil temperature between lichen heaths and shrub vegetation. We found that the average soil temperature was 1.45°C higher below lichen heaths than below shrub vegetation. Moreover, we measured a difference in soil temperature of 1.66°C between north- and south-facing lichen heaths, which contributes to the small-scale spatial variability in soil temperature below lichen heaths. Based on our experiments, we conclude that the buffering capacity of the litter layer below shrubs and shading of the soil by the shrub canopy lead to a lower soil temperature below shrubs compared to lichen heaths during the summer.
Magnetized black holes and black rings in the higher dimensional dilaton gravity
Creators: name: Yazadjiev, Stoytcho S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we consider magnetized black holes and black rings in the higher dimensional dilaton gravity. Our study is based on exact solutions generated by applying a Harrison transformation to known asymptotically flat black hole and black ring solutions in higher dimensional spacetimes. The explicit solutions include the magnetized version of the higher dimensional Schwarzschild-Tangherlini black holes, Myers-Perry black holes and five dimensional (dipole) black rings. The basic physical quantities of the magnetized objects are calculated. We also discuss some properties of the solutions and their thermodynamics. The ultrarelativistic limits of the magnetized solutions are briefly discussed and an explicit example is given for the $D$-dimensional magnetized Schwarzschild-Tangherlini black holes.
description: LaTeX, 23 pages; v2 references and comments added, some typos corrected;v3 minor changes
Block Coordinate Descent Algorithms for Auxiliary-Function-Based Independent Vector Extraction
Creators: name: Ikeshita, Rintaro
name: Nakatani, Tomohiro
name: Araki, Shoko
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper, we address the problem of extracting all super-Gaussian source signals from a linear mixture in which (i) the number of super-Gaussian sources $K$ is less than that of sensors $M$, and (ii) there are up to $M - K$ stationary Gaussian noises that do not need to be extracted. To solve this problem, independent vector extraction (IVE) using a majorization minimization and block coordinate descent (BCD) algorithms has been developed, attaining robust source extraction and low computational cost. We here improve the conventional BCDs for IVE by carefully exploiting the stationarity of the Gaussian noise components. We also newly develop a BCD for a semiblind IVE in which the transfer functions for several super-Gaussian sources are given a priori. Both algorithms consist of a closed-form formula and a generalized eigenvalue decomposition. In a numerical experiment of extracting speech signals from noisy mixtures, we show that when $K = 1$ in a blind case or at least $K - 1$ transfer functions are given in a semiblind case, the convergence of our proposed BCDs is significantly faster than those of the conventional ones.
description: Accepted by IEEE Transactions on Signal Processing
REDUCING PHOSPHORUS POLLUTION IN THE MINNESOTA RIVER: HOW MUCH IS IT WORTH?
Creators: name: Mathews, Leah Greden
name: Homans, Frances R.
name: Easter, K. William
name: Mathews, Leah Greden
name: Homans, Frances R.
name: Easter, K. William
Publisher: name: Unknown
Year: 1999
Subjects: Environmental Economics and Policy

description: A mail survey was conducted in Minnesota in 1997 to estimate the value of reducing phosphorus levels in the Minnesota River by 40%. The general population survey of river basin residents was designed to gather information about respondents' use of the Minnesota River in addition to their valuation of a hypothetical water quality improvement program. An estimate of the value of a specific recreational site along the River, the Minnesota Valley National Wildlife Refuge, was also obtained. Three distinct models were estimated in this research. The first was a contingent valuation model estimating the willingness to pay (WTP) for water quality improvements in the Minnesota River using only stated preference data. There were two different payment vehicles used in this question, an increase in the state income tax and a water bill surcharge. Respondents' annual mean willingness to pay for a 40% reduction in phosphorus was estimated to be $14.07 using this model and the tax vehicle, while the mean willingness to pay via the water bill surcharge was estimated to be $19.64 annually. The second model utilized stated preference data from respondents along with responses about their actual visit behavior. A panel model was constructed using the responses to three separate questions concerning the value of a 40% reduction in phosphorus pollution and yielded an estimate of $38.88 per year. The final model used only data from the subset of respondents who had actually visited the Minnesota Valley National Wildlife Refuge. The recreational value of a typical trip to the Refuge was estimated to be $28.71 per individual.
Universal Minimum Heat Leak on Low-Temperature Metallic Electrical Leads
Creators: name: Kadin, Alan M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Low-temperature electronic systems require electrical leads which have low electrical resistance to provide bias current I without excessive voltage drop V. But proper cryogenic design also requires high thermal resistance to maintain a minimum heat leak Q from the hot temperature T[hot] to the cold temperature T[cold]. By the Wiedemann-Franz law, these requirements are in direct conflict, and the optimal configuration takes a particularly simple universal approximate form for the common case that T[cold] << T[hot]: Q/I = V = 3.6 kT[hot]/e. This is applied here to the cryopackaging of RSFQ superconducting circuits on a 4K cryocooler, but is equally applicable to other cryogenic systems such as a superconducting sensor array at low and ultra-low temperatures.
description: Proc. Int. Low Temp. Phys. Conf. (LT24), held in Orlando, FL, Aug. 2005. 2 pages. Minor changes in notation and references in response to reviewer.
Tundra conservation challenged by forest expansion in a complex mountainous treeline ecotone as revealed by spatially explicit tree aboveground biomass modeling
Creators: name: Kruse, Stefan
name: Shevtsova, Iuliia
name: Heim, Birgit
name: Pestryakova, Luidmila A.
name: Zakharov, Evgeniy S.
name: Herzschuh, Ulrike
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Plant Biology

description: The subarctic forest tundra transition zone is one of the most vulnerable ecological regions worldwide and susceptible to climate change. Forest changes could lead to biodiversity losses when tundra areas become colonized. However, the impact of complex landscapes with barriers and channels for seed dispersal is highly understudied. Hence, we investigated potential tree aboveground biomass (AGB) change in mountainous central Chukotka (Siberia) with the individual-based spatially explicit vegetation model Larix vegetation simulator (LAVESI). In a climate sensitivity study, we simulate forest dynamics until 3000 CE for Representative Concentration Pathways (RCPs) with and without hypothetical cooling after 2300 CE to twentieth-century levels. The current state and spatiotemporal dynamics of tree AGB are validated against field and satellite-derived data. Our results suggest densification of existing tree stands and a lagged forest expansion depending on the distance to the current tree line (~39 percent of the total study area, RCP 8.5) under all considered climate scenarios. In scenarios with cooling after 2300 CE, forests stopped expanding and then gradually retreated to their pre-twenty-first-century position (~10 percent, RCP 8.5). However, forest remnants remain in the colonized area, leaving an imprint of forests in former tundra areas, which will likely have an adverse impact on tundra biodiversity.
ChartPointFlow for Topology-Aware 3D Point Cloud Generation
Creators: name: Kimura, Takumi
name: Matsubara, Takashi
name: Uehara, Kuniaki
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Graphics (cs.GR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: A point cloud serves as a representation of the surface of a three-dimensional (3D) shape. Deep generative models have been adapted to model their variations typically using a map from a ball-like set of latent variables. However, previous approaches did not pay much attention to the topological structure of a point cloud, despite that a continuous map cannot express the varying numbers of holes and intersections. Moreover, a point cloud is often composed of multiple subparts, and it is also difficult to express. In this study, we propose ChartPointFlow, a flow-based generative model with multiple latent labels for 3D point clouds. Each label is assigned to points in an unsupervised manner. Then, a map conditioned on a label is assigned to a continuous subset of a point cloud, similar to a chart of a manifold. This enables our proposed model to preserve the topological structure with clear boundaries, whereas previous approaches tend to generate blurry point clouds and fail to generate holes. The experimental results demonstrate that ChartPointFlow achieves state-of-the-art performance in terms of generation and reconstruction compared with other point cloud generators. Moreover, ChartPointFlow divides an object into semantic subparts using charts, and it demonstrates superior performance in case of unsupervised segmentation.
description: Accepted to ACM International Conference on Multimedia (ACMMM2021) as an oral presentation
Multi-proxy evidence of unprecedented hydroclimatic change in a high Arctic proglacial lake: Linnévatnet, Svalbard
Creators: name: Lapointe, Francois
name: Retelle, Michael
name: Bradley, Raymond S.
name: Farnsworth, Wesley R.
name: Støren, Eivind
name: Cook, Timothy
name: Rosario, Josiane
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Svalbard is at the forefront of sea ice, marine, and terrestrial environmental change in the Arctic and so can be viewed as an example of what may be expected in other high latitude regions influenced by the North Atlantic Current. However, there are few highly resolved (subdecadal) paleoclimate records from this area that provide a long-term perspective on recent climatic changes. Here, we investigate a new composite sedimentary sequence from Linnévatnet, western Spitsbergen, spanning the last ~2,000 years. The chronology of this new composite laminated sequence is supported by four radiometric dates. Prior to conducting paleoclimate investigations on these lake sediments, we investigated the sediment sources entering Linnévatnet. Sediment samples collected around the lake’s watershed indicate that the main sediment sources come from the eastern carbonate valley wall as well as Linnéelva, the main river system. Micro-X-ray fluorescence (µ-XRF) results indicate that calcium is the largest component of sediment delivered to the delta-proximal basin, where the sedimentary record was collected. Percentage organics deduced from loss-on-ignition measurements reveal an antiphased relationship with calcium and magnetic susceptibility, implying that the sediment loading at the core site is largely modulated by the alternation of calcium derived from carbonates of the eastern flanks of the valley and by coal-bearing sandstone from Linnéelva, derived from the main river inflow that drains the central valley. Linnéelva is mainly fed by snow and glacier meltwaters from Linnébreen, the small valley glacier now located 7 km south of Linnévatnet. Because Linnébreen is underlain by coal-bearing sandstone, organic content in Linnévatnet lake sediments can be used as an indicator of glacier activity. Annually resolved parameters—that is, calcium and grain size—were found to be strongly correlated to temperature inferred from nearby Lomonosovfonna δ18O ice record as well as the wider reconstructed Northern Hemisphere winter temperature. The coarsest grain size, highest calcium values, and lowest concentration of organics occurred just in recent years, suggesting that glacier influence on the sedimentary input to Linnévatnet is now at an all-time low in the context of the past millennia.
The Local Effects of Cosmological Variations in Physical 'Constants' and Scalar Fields II. Quasi-Spherical Spacetimes
Creators: name: Shaw, Douglas J.
name: Barrow, John D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the conditions under which cosmological variations in physical `constants' and scalar fields are detectable on the surface of local gravitationally-bound systems, such as planets, in non-spherically symmetric background spacetimes. The method of matched asymptotic expansions is used to deal with the large range of length scales that appear in the problem. We derive a sufficient condition for the local time variation of the scalar fields driving variations in 'constants' to track their large-scale cosmological variation and show that this is consistent with our earlier conjecture derived from the spherically symmetric problem. We perform our analysis with spacetime backgrounds that are of Szekeres-Szafron type. They are approximately Schwarzschild in some locality and free of gravitational waves everywhere. At large distances, we assume that the spacetime matches smoothly onto a Friedmann background universe. We conclude that, independent of the details of the scalar-field theory describing the varying `constant', the condition for its cosmological variations to be measured locally is almost always satisfied in physically realistic situations. The very small differences expected to be observed between different scales are quantified. This strengthens the proof given in our previous paper that local experiments see global variations by dropping the requirement of exact spherical symmetry. It provides a rigorous justification for using terrestrial experiments and solar system observations to constraint or detect any cosmological time variations in the traditional `constants' of Nature in the case where non-spherical inhomogeneities exist.
description: 13 pages, 1 figure
Black hole feeding and star formation in NGC 1808
Creators: name: Audibert, A.
name: Combes, F.
name: García-Burillo, S.
name: Hunt, L.
name: Eckart, A.
name: Aalto, S.
name: Casasola, V.
name: Boone, F.
name: Krips, M.
name: Viti, S.
name: Muller, S.
name: Dasyra, K.
name: van der Werf, P.
name: Martín, S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report on Atacama Large Millimeter Array (ALMA) observations of CO(3-2) emission in the Seyfert2/starburst galaxy NGC1808, at a spatial resolution of 4pc. Our aim is to investigate the morphology and dynamics of the gas inside the central 0.5kpc and to probe the nuclear feeding and feedback phenomena. We discovered a nuclear spiral of radius 1"=45pc. Within it, we found a decoupled circumnuclear disk or molecular torus of a radius of 0.13"=6pc. The HCN(4-3) and HCO$\rm^+$(4-3) and CS(7-6) dense gas line tracers were simultaneously mapped and detected in the nuclear spiral and they present the same misalignment in the molecular torus. At the nucleus, the HCN/HCO$^+$ and HCN/CS ratios indicate the presence of an active galactic nucleus (AGN). The molecular gas shows regular rotation, within a radius of 400pc, except for the misaligned disk inside the nuclear spiral arms. The computations of the torques exerted on the gas by the barred stellar potential reveal that the gas within a radius of 100pc is feeding the nucleus on a timescale of five rotations or on an average timescale of ~60Myr. Some non-circular motions are observed towards the center, corresponding to the nuclear spiral arms. We cannot rule out that small extra kinematic perturbations could be interpreted as a weak outflow attributed to AGN feedback. The molecular outflow detected at $\geqslant$250pc in the NE direction is likely due to supernovae feedback and it is connected to the kpc-scale superwind.
description: 15 pages, 18 figures, accepted to A&A. arXiv admin note: text overlap with arXiv:1905.01979
Investigating ten years of warming and enhanced snow depth on nutrient availability and greenhouse gas fluxes in a High Arctic ecosystem
Creators: name: Hung, Jacqueline K. Y.
name: Scott, Neal A.
name: Treitz, Paul M.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Space Science
subject: Medicine
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Computational Biology

description: Arctic warming and changing precipitation patterns are altering soil nutrient availability and other processes that control the greenhouse gas balance of high-latitude ecosystems. Changes to these biogeochemical processes will ultimately determine whether the Arctic will enhance or dampen future climate change. At the Cape Bounty Arctic Watershed Observatory, a full-factorial International Tundra Experiment site was established in 2008, allowing for the investigation of ten years of experimental warming and increased snow depth on nutrient availability and trace gas exchange in a mesic heath tundra across two growing seasons (2017 and 2018). Plots with open-top chambers (OTCs) had drier soils (p < .1) that released 1.5 times more carbon dioxide (p < .05), and this effect was enhanced in the drier growing season. Increased snow depth delayed the onset of thaw and active layer development (p < .1) and corresponded with greater nitrous oxide release (p < .05). Our results suggest that decreases to soil moisture will lead to an increase in nitrate availability, soil respiration, and nitrous oxide fluxes. Ultimately, these effects may be moderated by the magnitude of future shifts and interactions between climate variability and ecological responses to permafrost thaw.
Laboratory Notebooks for the Pioneer Venus Large Probe Neutral Mass Spectrometer
Creators: name: Hoffman, John H.
name: Mogul, Rakesh
Publisher: name: Zenodo
Year: 2025

description: These files represent the available laboratory notebooks from J.H. Hoffman, the Principal Investigator for the Pioneer Venus Large Probe Neutral Mass Spectrometer. These notebooks were obtained from the the archives at the W.B. Hanson Center for Space Sciences at the University of Texas, Dallas.
Likelihood Analysis of CMB Temperature and Polarization Power Spectra
Creators: name: Hamimeche, Samira
name: Lewis, Antony
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Microwave background temperature and polarization observations are a powerful way to constrain cosmological parameters if the likelihood function can be calculated accurately. The temperature and polarization fields are correlated, partial sky coverage correlates power spectrum estimators at different ell, and the likelihood function for a theory spectrum given a set of observed estimators is non-Gaussian. An accurate analysis must model all these properties. Most existing likelihood approximations are good enough for a temperature-only analysis, however they cannot reliably handle a temperature-polarization correlations. We give a new general approximation applicable for correlated Gaussian fields observed on part of the sky. The approximation models the non-Gaussian form exactly in the ideal full-sky limit and is fast to evaluate using a pre-computed covariance matrix and set of power spectrum estimators. We show with simulations that it is good enough to obtain correct results at ell >~ 30 where an exact calculation becomes impossible. We also show that some Gaussian approximations give reliable parameter constraints even though they do not capture the shape of the likelihood function at each ell accurately. Finally we test the approximations on simulations with realistically anisotropic noise and asymmetric foreground mask.
description: 35 pages, corrected over-generalization in eq A9 and missing symmetrization factors in Eqs. A13,A14 - no results changed
Time-Aware Evidence Ranking for Fact-Checking
Creators: name: Allein, Liesbeth
name: Augenstein, Isabelle
name: Moens, Marie-Francine
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Truth can vary over time. Fact-checking decisions on claim veracity should therefore take into account temporal information of both the claim and supporting or refuting evidence. In this work, we investigate the hypothesis that the timestamp of a Web page is crucial to how it should be ranked for a given claim. We delineate four temporal ranking methods that constrain evidence ranking differently and simulate hypothesis-specific evidence rankings given the evidence timestamps as gold standard. Evidence ranking in three fact-checking models is ultimately optimized using a learning-to-rank loss function. Our study reveals that time-aware evidence ranking not only surpasses relevance assumptions based purely on semantic similarity or position in a search results list, but also improves veracity predictions of time-sensitive claims in particular.
description: 16 pages, accepted for publication in Journal of Web Semantics - Special Issue on Content Credibility
[Brev til Johan Ernst Gunnerus]
Creators: name: Tonning, Henrik
name: Gunnerus, Johan Ernst
Publisher: name: Unknown
Year: 1766

description: Takker for tilsendte penger. Rapport fra Uppsala hvor Tonning skal disputere
description: Dahl nr.: 655. Polydoc nr. 1: 414. Polydoc nr. 2: 62.
THE ROLE OF AGRIBUSINESS IN DEVELOPMENT: REPLACING THE DIMINISHED ROLE OF THE GOVERNMENT IN RAISING RURAL INCOMES
Creators: name: Stanton, Julie V.
name: Stanton, Julie V.
Publisher: name: Unknown
Year: 2000
Subjects: subject: Agribusiness
subject: Community/Rural/Urban Development
subject: agribusiness
subject: agroindustry
subject: development strategies
subject: economic reform
subject: nonfarm income
subject: public policy
subject: rural income
subject: smallholder agriculture

description: With increasing efforts to promote free markets, one must ask whether the impact on some agricultural producers may be less than desirable. Small producers with limited access to capital, technical assistance, and competitive buyers may be unable to participate in new marketing opportunities. Without recommending a return to heavy government, this article suggests development policy be enlarged to encompass agribusiness enterprises. Localized agribusiness can help rural populations capture value added that is otherwise lost to external agents. This may require, however, a different governmental role, primarily in the provision of basic infrastructure, transparent policies, and the continued emphasis on availability of capital and technology.
Abendmahlspraxis - Abendmahlslehre - Abendmahlsgemeinschaft
Creators: name: Slenczka, Reinhard
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 21 Nr. 2 (1972): Ökumenische Rundschau, Band 21, Heft 2
PROBLEMS AND PROSPECTS OF THE WORLD FOOD SITUATION
Creators: name: Gebremedhin, Tesfa G.
name: Gebremedhin, Tesfa G.
Publisher: name: Unknown
Year: 2000
Subjects: subject: Food Security and Poverty
subject: food distribution
subject: food security
subject: food supply
subject: hunger
subject: malnutrition
subject: poverty

description: Although world food and agricultural production, based on current trends, will be sufficient to meet demand in the decades ahead, the world still faces a serious food crisis, at least as perilous and life-threatening for millions of poor people as those of the past. To this end, the main objective of this paper is to illuminate the world food situation and to provide a critical analysis of the core causes of world food insecurity by identifying the various misconceptions surrounding our understanding of hunger, starvation, and poverty. A clear and deeper awareness of the real causes of hunger and malnutrition in poor countries is imperative to enable and challenge policy makers and planners to lay the groundwork at the grass-roots level for appropriate policy measures and development programs designed to alleviate poverty and ensure food security.
[Brev til Johan Ernst Gunnerus]
Creators: name: Carl, Av Hessen?
name: Gunnerus, Johan Ernst
Publisher: name: Unknown
Year: 1767

description: Takker for tilsendt brev
description: Ikke tr. i Dahl. Landgreve av Hessen-Cassel. Polydoc nr. 1: 417. Polydoc nr. 2: 65.
Non-native vascular flora of alpine areas in the White Mountains, New Hampshire, USA
Creators: name: Sperduto, Daniel D.
name: Nichols, William F.
name: Jones, Michael T.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Sociology
subject: FOS: Sociology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Marine Biology
subject: Computational Biology

description: Arctic-alpine vegetation in the eastern United States is unique to northern New England and New York and is disjunct from similar areas in eastern Canada. We present the first study of the non-native flora in the region, specifically focusing on New Hampshire’s White Mountains. By combining literature and herbaria searches, field surveys, and a seventeen-year evaluation at an alpine hut in a hypothesis-driven framework, we document the composition, chronology, and persistence of non-native plant species establishments, regress richness in relation to elevation and disturbed area, and evaluate similarities to nineteen other alpine floras globally. Our results indicate that the White Mountains support one of the most species-rich non-native alpine floras known in the world, with 58 species detected at thirty-one sites since 1874, comprising 19 percent of 300 species documented in New Hampshire’s 22 km2 of alpine tundra. There is a negative relationship between non-native alpine plant richness and elevation along a mountain road on Mt. Washington. Moreover, elevation predicts richness per unit area in proximity to clusters of built structures in alpine areas. The compositions, geographic origins, and dominant ruderal strategies of non-native species are similar to those of Arctic and other alpine non-native floras globally. Sørenson similarity index and nonmetric multidimensional scaling ordination of twenty alpine regions reveals the White Mountains have highest similarity with widely separated mountain regions in Australia, Hawaii, the Rocky Mountains, the Andes, Southern Africa, and Iceland, driven by shared species of Eurasian origin. We report the unexpected discovery of Plagiobothrys hispidulus, a borage native to western North America not previously reported from New Hampshire. These findings have important implications for managers of alpine areas in eastern North America and may facilitate the early detection, monitoring, and control of non-native species, minimizing their establishment and spread.
Volume Effect of Bound States in Quark Gluon Plasma
Creators: name: Miao, Hong
name: Gao, Chongshou
name: Zhuang, Pengfei
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Bound states, such as $qq$ and $q\bar{q}$, may exist in the Quark Gluon Plasma. As the system is at high density, the volume of the bound states may evoke a reduction to the phase space. We introduce an extended bag model to investigate qualitatively the volume effect on the properties of the system. We find a limit temperature where the bound states start to be completely melted.
description: 9 pages, 11 figures, Some descriptions on parameters and important references were added
[Brev til Johan Ernst Gunnerus]
Creators: name: Leseurre,
name: Gunnerus, Johan Ernst
Publisher: name: Unknown
Year: 1767

description: Diskuterer fabae marinae. Leseurre har gjort undersøkelser som styrker Gunnerus resultater. Dessuten, er Thule Island?
description: Dahl nr.: 662. Polydoc nr. 1: 418. Polydoc nr. 2: 66.
USING THE CRUDE OIL AND HEATING OIL MARKETS FOR DIESEL FUEL PURCHASING DECISIONS
Creators: name: Dhuyvetter, Kevin C.
name: Dean, Erik
name: Parcell, Joseph L.
name: Dhuyvetter, Kevin C.
name: Dean, Erik
name: Parcell, Joseph L.
Publisher: name: Unknown
Year: 2003
Subjects: subject: Resource /Energy Economics and Policy
subject: crude oil
subject: diesel fuel
subject: forecasts
subject: forward contracting
subject: heating oil

description: Agricultural producers and input suppliers must regularly make decisions based on forecasts; however, most publicly available forecasts are for outputs. Research has shown the importance of being a low-cost operator. Thus, focusing on inputs may be beneficial. The objective of this research was to estimate models based on futures markets to forecast diesel fuel prices. Results suggest diesel fuel prices forecasted using the crude oil or heating oil futures market are reasonably accurate, and that this approach is superior to using a historical average. Based on out-of-sample price predictions, producers could profitably use crude oil futures-based models to make diesel fuel purchasing decisions. While the gains from following a model-based decision rule were small, they were positive, suggesting producers would not be worse off following this strategy.