cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Liouville invariance in quantum and classical mechanics
Creators: name: Brink, Alec Maassen van den
name: Zagoskin, A. M.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: The density-matrix and Heisenberg formulations of quantum mechanics follow--for unitary evolution--directy from the Schr"odinger equation. Nevertheless, the symmetries of the corresponding evolution operator, the Liouvillian L=i[.,H], need not be limited to those of the Hamiltonian H. This is due to L only involving eigenenergy_differences_, which can be degenerate even if the energies themselves are not. Remarkably, this possibility has rarely been mentioned in the literature, and never pursued more generally. We consider an example involving mesoscopic Josephson devices, but the analysis only assumes familiarity with basic quantum mechanics. Subsequently, such _L-symmetries_ are shown to occur more widely, in particular also in classical mechanics. The symmetry's relevance to dissipative systems and quantum-information processing is briefly discussed.
description: REVTeX 4, 14 p.; 1 built-in + 1 PS figure; N.B. `Alec' is my first name, `Maassen van den Brink' my family name; Pls delete the `2000' postfix to `amsmath' on l. 2 of the ms file, it's for arXiv/LANL only; v2: main text subdivided into sections, small textual changes for clarity; v3: published version with reordered sections, and figure + historical refs added
A neural network interface for DL_POLY and its application to liquid water
Creators: name: Sukuba, Ivan
name: Chen, Lei
name: Probst, Michael
name: Kaiser, Alexander
Publisher: name: Taylor & Francis
Year: 2021
Subjects: Biophysics
Physical Sciences not elsewhere classified
Biotechnology
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Information Systems not elsewhere classified
Computational Biology

description: After a general discussion of neural networks potential energy functions and their standing within the various approaches of representing the potential energy function of a system, we describe a new interface between the open source atomistic library aenet of Artrith and Urban and the DL_POLY 4 code. As an application example, the training of a neural network for liquid water is described and the network is used in a molecular dynamics simulation. The resulting thermodynamic properties are compared with those from a reference simulation with the same SPC/E model that has been used in the training.
Market Organization and Productive Efficiency: Evidence from the Texas Electricity Market
Creators: name: Zhang, Yiyuan
name: Zhang, Yiyuan
Publisher: name: Unknown
Year: 2016
Subjects: subject: Environmental Economics and Policy
subject: Industrial Organization
subject: Production Economics
subject: Resource /Energy Economics and Policy
subject: Market Design
subject: Electricity Markets
subject: Congestion Externality
subject: Carbon Emissions

description: This paper examines the impact of market organization on efficiency and social welfare in the electricity market. Wholesale electricity markets exhibit two basic forms of organization: the decentralized bilateral trading market and the centralized auction market. While the centralized market may improve efficiency through information aggregation, it may also reduce efficiency by exacerbating the incentive faced by market participants to exercise market power. Taking advantage of Texas' transition from a bilateral trading market to a centralized auction market, I show that the effect of the former dominates the latter. Using detailed generation data, I find that high-cost generators were displaced by low-cost generators in production. In the nine months following the transition, the generation cost was reduced by $30.7 million, about 0.5% of the total generation cost. Although the centralized market led to private cost saving, it also had an unintended effect on emissions. For moderate estimates of marginal damage values, the increased external costs of emissions completely offset the productive efficiency gain.
Desenvolvimento de um Sensor de Umidade para Solos
Creators: name: Sigales, Marlon Soares
name: Scheunemann, Jean Carlos
name: Wille, Mariano Berwanger
name: Fonseca, Mateus Beck
Publisher: name: figshare
Year: 2019
Subjects: subject: 90699 Electrical and Electronic Engineering not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper aims to present the techniques of developing a low cost moisture sensor for soils that meets the demand of all deficient niches of this technology. Sensor developed considering the resistive and capacitive components of the soil, using a complex model of the same.
Two Dimensional heterostructure and its application in efficient quantum energy storage
Creators: name: Talukdar, Meenakshi
name: Behera, Sushant Kumar
name: Deb, Pritam
Publisher: name: arXiv
Year: 2019
Subjects: subject: Applied Physics (physics.app-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Portable miniaturized energy storage micro-supercapacitor has engrossed significant attention due to its power source and energy storage capacity, replacing batteries in ultra-small electronic devices. Fabrication with porous and 2D graphitic nanomaterials with high conductivity and surface area signify high performance of micro-supercapacitor. In order to satisfy the fast-growing energy demands for the next-generation, we report performance and design of a 2D heterostructure of EDLC (g-C$_3$N$_4$) & pseudocapacitive (FeNi$_3$) resulting low ionic diffusion path and prominent charge storage based on their synergic functionalities. This heterostructure system shows an enhanced quantum capacitance (38% enhancement) due to delocalized states near Fermi level. Having achieved the areal capacitance of 19.21 mFcm$^{-2}$, capacitive retention (94%), enhanced power density (17 fold) having ultrahigh energy density of 0.30 Wh.cm$^{-3}$ and stability of the material even without any obvious degradation after 1000 cycles, this smart heterostructure acts as a new platform for designing high-performance in-plane micro-supercapacitor.
description: 15 pages, 3 figures
Anti-Malarial Biotechnology, Drug Resistance, and the Dynamics of Disease Management
Creators: name: Schaefer, K. Aleks
name: Schaefer, K. Aleks
Publisher: name: Unknown
Year: 2016
Subjects: subject: Health Economics and Policy
subject: International Development
subject: artemisinin
subject: biotechnology
subject: drug resistance

description: In the presence of market imperfections, there is no guarantee that society will benefit from technological change. This research analyzes the impact of biotechnology designed to bypass agricultural processes in the production of pharmaceutical products. High quality pharmaceuticals often exist alongside less effective treatments with a common active phytochemical ingredient. In this context, antimicrobial resistance generated by the consumption of one product also affects the efficacy of the other product. These interdependencies fundamentally alter the effects of biotechnology on retail markets, agricultural input markets, and antimicrobial resistance. I construct a dynamic epidemiological-economic model of the global market for anti-malarials to analyze the potential economic and public health costs associated with the introduction of a recently developed semi-synthetic production technology by which to procure artemisinin for use in artemisinin-based combination therapies (ACTs) used in the treatment of malaria. I find that in addition to decreasing the price of ACTs, semi-synthetic production technology also lowers the price of low quality monotherapy treatments and increases resistance to all forms of artemisinin. Despite these adverse effects, the development of semi-synthetic artemisinin leads to a present-value gain of approximately $2 billion in social welfare over a seven-year time horizon.
CENTRÍFUGA PARA ESPALHAR TINTA FOTOSSENSÍVEL SOBRE PLACA DE FENOLITE
Creators: name: Tarso Rodrigues Ávila
name: Wille, Mariano Berwanger
name: Scheunemann, Jean Carlos
name: Sigales, Marlon Soares
name: Rossi, Marcelo Lemos
Publisher: name: figshare
Year: 2019
Subjects: subject: 90699 Electrical and Electronic Engineering not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This work deals with the solution of obtaining a thin and homogeneous layer of ultraviolet light sensitive ink on the phenolite plate, used in the photolithography methodology for a printed circuit board manufacturer.
Predictive power of grand unification from quantum gravity
Creators: name: Eichhorn, Astrid
name: Held, Aaron
name: Wetterich, Christof
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: If a grand-unified extension of the asymptotically safe Reuter fixed-point for quantum gravity exists, it determines free parameters of the grand-unified scalar potential. All quartic couplings take their fixed-point values in the trans-Planckian regime. They are irrelevant parameters that are, in principle, computable for a given particle content of the grand unified model. In turn, the direction of spontaneous breaking of the grand-unified gauge symmetry becomes predictable. For the flow of the couplings below the Planck mass, gauge and Yukawa interactions compete for the determination of the minimum of the effective potential.
description: 1 additional figure and comments added; identical with version published in JHEP
Tetra acerii Xue, Song & Hong 2006
Creators: name: Xue, Xiao-Feng
name: Han, Xiao
name: Song, Zi-Wei
name: Hong, Xiao-Yue
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Trombidiformes
Eriophyidae
Tetra
Tetra acerii

description: Tetra acerii Xue, Song & Hong, 2006
 Tetra acerii Xue, Song & Hong, 2006c: 10–11.
 Type material. 29 females and 6 males (slide number NJAUAcariEri240), from Acer sp. L. (Aceraceae), Taibai Mountain, Mei County, Shaanxi Province, P. R. China, 34°01'51' N, 107°48'36' E, elevation 2810m, 1 September 2004, coll. Xiao-Feng Xue & Zi-Wei Song.
 Host. Acer sp. L. (Aceraceae).
 Relation to host. Vagrant.
 Distribution. China (Shaanxi).
description: Published as part of Xue, Xiao-Feng, Han, Xiao, Song, Zi-Wei & Hong, Xiao-Yue, 2012, Eriophyoid mite fauna of Shaanxi Province, China, with descriptions of five new species (Acari: Eriophyoidea) 3292, pp. 1-71 in Zootaxa 3292 (1) on pages 53-54, DOI: 10.11646/zootaxa.3292.1.1, http://zenodo.org/record/5250127
Signaling and Scrambling with Strongly Long-Range Interactions
Creators: name: Guo, Andrew Y.
name: Tran, Minh C.
name: Childs, Andrew M.
name: Gorshkov, Alexey V.
name: Gong, Zhe-Xuan
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Strongly long-range interacting quantum systems---those with interactions decaying as a power-law $1/r^α$ in the distance $r$ on a $D$-dimensional lattice for $α\le D$---have received significant interest in recent years. They are present in leading experimental platforms for quantum computation and simulation, as well as in theoretical models of quantum information scrambling and fast entanglement creation. Since no notion of locality is expected in such systems, a general understanding of their dynamics is lacking. As a first step towards rectifying this problem, we prove two new Lieb-Robinson-type bounds that constrain the time for signaling and scrambling in strongly long-range interacting systems, for which no tight bounds were previously known. Our first bound applies to systems mappable to free-particle Hamiltonians with long-range hopping, and is saturable for $α\le D/2$. Our second bound pertains to generic long-range interacting spin Hamiltonians, and leads to a tight lower bound for the signaling time to extensive subsets of the system for all $α< D$. This result also lower-bounds the scrambling time, and suggests a path towards achieving a tight scrambling bound that can prove the long-standing fast scrambling conjecture.
description: $5+\epsilon + 5$ pages, $1+2$ figures
Treasuring trees for agricultural management transformation
Creators: name: Wibberley, E. John
name: Wibberley, E. John
Publisher: name: Unknown
Year: 2014
Subjects: subject: Environmental Economics and Policy
subject: Land Economics/Use
subject: trees
subject: agro-ecological
subject: ecosystem security
subject: integral
subject: management
subject: extension

description: Trees are vital to earth’s ecosystem. In many places, loss of trees is faster than their replacement. With particular reference to sub-Saharan Africa, this paper seeks to review in outline the value of trees in order to encourage better understanding, appreciation and practical management response. A treasury is a store of wealth, a treasurer its custodian, and the act of treasuring is a positive response to the value of that wealth. Trees are a multi-faceted source of wealth. Not just foresters and forest communities but especially farmers, and also civil societies, families and individuals at large need to care about and for trees. The paper briefly indicates the global status of forests, their ecological and economic significance, and proposes tree-treasuring strategies and practices together with their integration in agro-ecological systems for global food security. While recognising the excellent work that is being done in some places, it is a wider call for deeper appreciation and fresh endeavours concerning trees and their integral management within farming systems. The paper also reports responses to practical field workshops on trees held in Malawi in 2012. In short, integration of trees is deemed essential for sustainable agriculture within ecosystem security.
A neural network interface for DL_POLY and its application to liquid water*
Creators: name: Sukuba, Ivan
name: Chen, Lei
name: Probst, Michael
name: Kaiser, Alexander
Publisher: name: Taylor & Francis
Year: 2018
Subjects: Biophysics
Physical Sciences not elsewhere classified
Biotechnology
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Information Systems not elsewhere classified
Computational Biology

description: After a general discussion of neural networks potential energy functions and their standing within the various approaches of representing the potential energy function of a system, we describe a new interface between the open source atomistic library aenet of Artrith and Urban and the DL_POLY 4 code. As an application example, the training of a neural network for liquid water is described and the network is used in a molecular dynamics simulation. The resulting thermodynamic properties are compared with those from a reference simulation with the same SPC/E model that has been used in the training.
Local Embeddings for Relational Data Integration
Creators: name: Cappuzzo, Riccardo
name: Papotti, Paolo
name: Thirumuruganathan, Saravanan
Publisher: name: arXiv
Year: 2019
Subjects: subject: Databases (cs.DB)
subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Deep learning based techniques have been recently used with promising results for data integration problems. Some methods directly use pre-trained embeddings that were trained on a large corpus such as Wikipedia. However, they may not always be an appropriate choice for enterprise datasets with custom vocabulary. Other methods adapt techniques from natural language processing to obtain embeddings for the enterprise's relational data. However, this approach blindly treats a tuple as a sentence, thus losing a large amount of contextual information present in the tuple. We propose algorithms for obtaining local embeddings that are effective for data integration tasks on relational databases. We make four major contributions. First, we describe a compact graph-based representation that allows the specification of a rich set of relationships inherent in the relational world. Second, we propose how to derive sentences from such a graph that effectively "describe" the similarity across elements (tokens, attributes, rows) in the two datasets. The embeddings are learned based on such sentences. Third, we propose effective optimization to improve the quality of the learned embeddings and the performance of integration tasks. Finally, we propose a diverse collection of criteria to evaluate relational embeddings and perform an extensive set of experiments validating them against multiple baseline methods. Our experiments show that our framework, EmbDI, produces meaningful results for data integration tasks such as schema matching and entity resolution both in supervised and unsupervised settings.
description: Accepted to SIGMOD 2020 as Creating Embeddings of Heterogeneous Relational Datasets for Data Integration Tasks. Code can be found at https://gitlab.eurecom.fr/cappuzzo/embdi
The economics of biogas in Denmark: a farm and socioeconomic perspective
Creators: name: Jacobsen, Brian H.
name: Laugesen, Frederik M.
name: Dubgaard, Alex
name: Jacobsen, Brian H.
name: Laugesen, Frederik M.
name: Dubgaard, Alex
Publisher: name: Unknown
Year: 2014
Subjects: subject: Environmental Economics and Policy
subject: Farm Management
subject: Land Economics/Use
subject: Economics
subject: upgrading biogas
subject: cost of CO2 reduction
subject: mitigation

description: Denmark has been one of the leading European Countries in using Biogas for Combined Heat and Power (CHP), since the 1980s. However, in the last two decades, the increase has been limited. A new energy policy aimed at increasing the profitability of biogas was introduced in the spring of 2012. The analysis here shows that the new agreement will improve the profitability of biogas plants and increase the biogas production although the political ambition of an increase from 4 PJ to 17 PJ by 2020 seems unlikely. The analysis shows that biogas plants can be profitable even if the input is a mix of manure and solid fractions/ farm yard manure given the present level of support. The overall production costs are around J0.63 per m3 methane produced, but they can vary from 0.47–0.78 per m4 methane produced3. The profit in the CASE 2012 analysis is J420,000 per year or 0.0.8 J per m3 methane. The analysis shows that the profit from upgrading biogas is only to be preferred if the sales price of heat or the amount sold are relatively low. The socioeconomic analyses show that the costs of biogas as a measure to reduce CO2 emissions are around J151 per tonne CO2 (J85–266 per ton) and that using maize is an expensive way to reduce emissions of CO2. In an analysis comparing the Danish and German support system, it has been found that the German socioeconomic costs seem to be five times higher than the Danish, based on the same calculation method. In order to improve profitability and reduce the cost of reducing CO2 emissions, the input to the biogas plant has to be based more on farm yard manure and deep bedding, although the cost of using these inputs might be higher than was included in the analysis.
ScreenABLE: Breast Cancer Screening among Women with Disabilities from Community Identified Challenges to Community-Based Programs
Creators: name: Magasi, Susan
name: JP Reis
name: T Wilson
name: A Rosen
name: A Ferlin
name: L VanPuymbrouck
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: Uncategorized

description: BACKGROUND: Women with disabilities are an unrecognized cancer disparities population who experience well-documented barriers to breast cancer screening. There is a critical need for targeted, community-directed programing to address these disparities. OBJECTIVES: To describe the trajectory of a long-term community-academic partnership aimed at understanding and addressing breast cancer screening disparities among women with disabilities. METHODS: Phase 1 was a thematic qualitative focus group study (n = 40) with women with physical disabilities to understand their breast cancer screening experiences. Phase 2 was the application of an equity-focused knowledge translation (KT) process that brought together breast cancer survivors with disabilities and graduate applied health students in KT collaboratives to create innovative, evidence-informed knowledge products. Phase 3 included the development of community-based programming. RESULTS: In phase 1, women with disabilities identified provider and patient barriers to breast cancer screening, including a lack of provider knowledge and respect for individuals with disabilities, lack of accessibility, the history of stigma and mistreatment within the health care setting, and treatment fatigue. In phase 2, KT collaboratives created the short film "ScreenABLE" to educate providers and community members about physical and attitudinal barriers to cancer screening. In phase 3, community, academic, and clinical partners collaborated to create ScreenABLE Saturday, a wellness fair and free accessible mammograms, for women with disabilities with programming developed to directly address cancer screening barriers identified from the phase 1 research. CONCLUSIONS: Long-term sustained partnerships between academic, disability, and clinical partners are needed to address the complex issues that perpetuate breast cancer screening disparities among women with disabilities.
Calculating full costs for Swiss dairy farms in the mountain region using a maximum entropy approach for joint-cost allocation
Creators: name: Lips, Markus
name: Lips, Markus
Publisher: name: Unknown
Year: 2014
Subjects: subject: Livestock Production/Industries
subject: full costs
subject: dairy
subject: joint cost allocation
subject: enterprise
subject: Switzerland
subject: FADN

description: Using data from the Swiss Farm Accountancy Data Network (FADN), this paper derives the full cost for all enterprises–also called ‘activities’ or ‘production branches’–of a sample of 44 Swiss dairy farms in the mountain region. For the joint-cost assignment among enterprises, we apply an approach based on maximum entropy, leading to a disproportionate allocation. The costs per kilogram of milk are calculated on the basis of enterprises involved in dairy production such as roughage, dairy-cow husbandry and calf rearing. Said costs come to CHF 2.40 on average and CHF 2.13 for the median farm. Both results are over three times higher than the producer price, highlighting the significance of other income sources such as direct payments. Labour and machinery are the most important cost items, accounting for 62% and 14% of total costs, respectively. Furthermore, the analysis reveals significant negative correlations between the full costs for milk on the one hand, and farm size measured in livestock units and farm income per family annual labour unit on the other.
MOESM2 of Analysis of PD-1 related immune transcriptional profile in different cancer types
Creators: name: Shang, Jun
name: Song, Qian
name: Yang, Zuyi
name: Sun, Xiaoyan
name: Xue, Meijuan
name: Chen, Wenjie
name: Yang, Jingcheng
name: Wang, Sihua
Publisher: name: figshare
Year: 2018
Subjects: subject: Space Science
subject: Genetics
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy
subject: Computational Biology

description: Additional file 2: Fig. S2. Correlation of PD-L1 expression with PD-1 expression and other types of other immunomodulators in 33 types of cancer.
Tetra coriariae Xue, Song & Hong 2007
Creators: name: Xue, Xiao-Feng
name: Han, Xiao
name: Song, Zi-Wei
name: Hong, Xiao-Yue
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Trombidiformes
Eriophyidae
Tetra
Tetra coriariae

description: Tetra coriariae Xue, Song & Hong, 2007
 Tetra coriariae Xue, Song & Hong, 2007d: 4–7.
 Type material. 5 females and 2 males (slide number NJAUAcariEri374), from Coriaria nepalensis Wall. (Coriariaceae), Maoping town, Yang County, Shaanxi Province, P. R. China, 33°31'08' N, 107°40'14' E, elevation 898m, 11 August 2005, coll. Zi-Wei Song and Xiao-Feng Xue.
 Host. Coriaria nepalensis Wall. (Coriariaceae).
 Relation to host. Vagrant.
 Distribution. China (Shaanxi).
description: Published as part of Xue, Xiao-Feng, Han, Xiao, Song, Zi-Wei & Hong, Xiao-Yue, 2012, Eriophyoid mite fauna of Shaanxi Province, China, with descriptions of five new species (Acari: Eriophyoidea) 3292, pp. 1-71 in Zootaxa 3292 (1) on page 54, DOI: 10.11646/zootaxa.3292.1.1, http://zenodo.org/record/5250127
NEW EVIDENCE ON THE STRUCTURE OF FOOD DEMAND IN CHINA: AN EASI DEMAND MODEL ESTIMATED VIA PANEL DATA TECHNIQUES
Creators: name: Hovhannisyan, Vardges
name: Hovhannisyan, Vardges
Publisher: name: Unknown
Year: 2016
Subjects: subject: Demand and Price Analysis
subject: EASI demand
subject: expenditure endogeneity
subject: price endogeneity
subject: food demand
subject: urban China.

description: This study analyzes the structure of food demand in urban China based on the most recent household expenditure survey data. Consumer food preferences are represented by an Exact Affine Stone Index (EASI) demand model, which accounts for unobserved consumer heterogeneity and allows for arbitrary Engel curve shapes. Further, we account for unobserved province-level heterogeneity in food preferences via province fixed-effects. Our findings indicate that seafood, fruit, and vegetables are income and expenditure elastic, while commodities such as grains and eggs are less than unitary elastic.
Tetra actinidiae Xue, Song & Hong 2007
Creators: name: Xue, Xiao-Feng
name: Han, Xiao
name: Song, Zi-Wei
name: Hong, Xiao-Yue
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Trombidiformes
Eriophyidae
Tetra
Tetra actinidiae

description: Tetra actinidiae Xue, Song & Hong, 2007
 Tetra actinidiae Xue, Song & Hong, 2007d: 4–5.
 Type material. 10 females (slide number NJAUAcariEri416), from Actinidia sp. Lindl. (Actinidiaceae), Cuihua Mountain, Xi' an City, Shaanxi Province, P. R. China, 34°59'40' N, 109°00'04' E, elevation 901m, 15 August 2005, coll. Xiao-Feng Xue & Zi-Wei Song.
 Host. Actinidia sp. Lindl. (Actinidiaceae).
 Relation to host. Vagrant.
 Distribution. China (Shaanxi).
description: Published as part of Xue, Xiao-Feng, Han, Xiao, Song, Zi-Wei & Hong, Xiao-Yue, 2012, Eriophyoid mite fauna of Shaanxi Province, China, with descriptions of five new species (Acari: Eriophyoidea) 3292, pp. 1-71 in Zootaxa 3292 (1) on page 54, DOI: 10.11646/zootaxa.3292.1.1, http://zenodo.org/record/5250127
Shell Shock and Cloud Shock: Results from Spatially-Resolved X-ray Spectroscopy with Chandra in the Cygnus Loop
Creators: name: Levenson, N. A.
name: Graham, J. R.
name: Walters, J. L.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use the Chandra X-ray Observatory to analyze interactions of the blast wave and the inhomogeneous interstellar medium on the western limb of the Cygnus Loop supernova remnant. This field of view includes an initial interaction between the blast wave and a large cloud, as well as the encounter of the shock front and the shell that surrounds the cavity of the supernova progenitor. Uniquely, the X-rays directly trace the shock front in the dense cloud, where we measure temperature kT = 0.03 keV. We find kT~0.2 keV in regions where reflected shocks further heat previously-shocked material. Applying one-dimensional models to these interactions, we determine the original blast wave velocity v_bw~330 km/s in the ambient medium. We do not detect strong evidence for instabilities or non-equilibrium conditions on the arcsecond scales we resolve. These sensitive, high-resolution data indicate no exceptional abundance variations in this region of the Cygnus Loop.
description: 19 pages, 5 figures, 1 color figure; ApJ, in press; version with full-resolution figures available at http://www.pa.uky.edu/~levenson/publications.html
Forbidden transitions in the helium atom
Creators: name: Lach, Grzegorz
name: Pachucki, Krzysztof
Publisher: name: arXiv
Year: 2001
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Nonrelativistically forbidden, single-photon transition rates between low lying states of the helium atom are rigorously derived within quantum electrodynamics theory. Equivalence of velocity and length gauges, including relativistic corrections is explicitly demonstrated. Numerical calculations of matrix elements are performed with the use of high precision variational wave functions and compared to former results.
description: 11 pages, 1 figure, submitted to Phys. Rev. A
Band gap evolution in Ruddlesden-Popper phases
Creators: name: Li, Wei
name: Niu, Shanyuan
name: Zhao, Boyang
name: Haiges, Ralf
name: Ravichandran, Jayakanth
name: Janotti, Anderson
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigate the variation of the band gap across the Ruddlesden-Popper (RP) series (An+1BnX3n+1) in model chalcogenide, oxide, and halide materials to understand the factors influencing band gap evolution. In contrast to the oxides and halides, we find the band gap of the chalcogenides evolve differently with the thickness of the perovskite blocks in these natural superlattices. We show that octahedral rotations (i.e. deviation of the B-X-B bond angles from 180) and quantum confinement effects compete to decide the band gap evolution of RP phases. The insights gained here will allow us to rationally design layered perovskite phases for electronics and optoelectronics.
Dark Matter - Neutrino Scattering at the Galactic Center
Creators: name: Delgado Lopez, Diyaselis
Publisher: name: Zenodo
Year: 2024
Subjects: Dark Matter
Neutrino Interactions
BSM Searches
Neutrino Telescopes

description: Parallel Talk presented at the XX International Workshop on Neutrino Telescopes - Venice 23-27 October 2023

 

Abstract:

Evidence for the existence of dark matter strongly motivates the efforts to study its unknown properties. Additionally, the origin of high-energy astrophysical neutrinos detected by IceCube remains uncertain. If dark matter and neutrinos couple to each other, we can search for a non-zero elastic scattering cross section. The interaction between an isotropic extragalactic neutrino flux and dark matter would be concentrated in the Galactic Center, where the dark matter column density is largest. The flux of high-energy neutrinos would be attenuated by this scattering, and the resulting signal, with correlated energy and arrival direction, can be observed in IceCube. Using the seven years of IceCube data, we perform an unbinned likelihood analysis, searching for several potential DM-neutrino interaction scenarios.
Tetra hupeanae Xue, Song & Hong 2007
Creators: name: Xue, Xiao-Feng
name: Han, Xiao
name: Song, Zi-Wei
name: Hong, Xiao-Yue
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Trombidiformes
Eriophyidae
Tetra
Tetra hupeanae

description: Tetra hupeanae Xue, Song & Hong, 2007
 Tetra hupeanae Xue, Song & Hong, 2007d: 9–11.
 Type material. 8 females and 1 male (slide number NJAUAcariEri368), from Dalbergia hupeana Hance (Leguminosae), Maoping town, Yang County, Shaanxi Province, P. R. China, 33°31'08' N, 107°40'14' E, elevation 898m, 11 August 2005, coll. Zi-Wei Song and Xiao-Feng Xue.
 Host. Dalbergia hupeana Hance (Leguminosae).
 Relation to host. Vagrant.
 Distribution. China (Shaanxi).
description: Published as part of Xue, Xiao-Feng, Han, Xiao, Song, Zi-Wei & Hong, Xiao-Yue, 2012, Eriophyoid mite fauna of Shaanxi Province, China, with descriptions of five new species (Acari: Eriophyoidea) 3292, pp. 1-71 in Zootaxa 3292 (1) on page 55, DOI: 10.11646/zootaxa.3292.1.1, http://zenodo.org/record/5250127
Hypermap Mapping Framework and its Application to Autonomous Semantic Exploration
Creators: name: Zaenker, Tobias
name: Verdoja, Francesco
name: Kyrki, Ville
Publisher: name: arXiv
Year: 2019
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Modern intelligent and autonomous robotic applications often require robots to have more information about their environment than that provided by traditional occupancy grid maps. For example, a robot tasked to perform autonomous semantic exploration has to label objects in the environment it is traversing while autonomously navigating. To solve this task the robot needs to at least maintain an occupancy map of the environment for navigation, an exploration map keeping track of which areas have already been visited, and a semantic map where locations and labels of objects in the environment are recorded. As the number of maps required grows, an application has to know and handle different map representations, which can be a burden. We present the Hypermap framework, which can manage multiple maps of different types. In this work, we explore the capabilities of the framework to handle occupancy grid layers and semantic polygonal layers, but the framework can be extended with new layer types in the future. Additionally, we present an algorithm to automatically generate semantic layers from RGB-D images. We demonstrate the utility of the framework using the example of autonomous exploration for semantic mapping.
description: In 2020 IEEE International Conference on Multisensor Fusion and Integration (MFI)
Influence of pH and Bulk Density on Carbon Dioxide Efflux in Three Urban Wetland Types
Creators: name: Chappell, Christopher
name: Johnson, Andra
name: Chappell, Christopher
name: Johnson, Andra
Publisher: name: Unknown
Year: 2015
Subjects: subject: Community/Rural/Urban Development
subject: Environmental Economics and Policy
subject: Wetland
subject: Urban
subject: Carbon Dioxide
subject: pH
subject: Bulk Density

description: The aim of this study was to understand soil carbon dioxide (CO2) efflux of three different urban wetlands and how pH and bulk density relate to soil CO2 efflux of each wetland. The three wetlands were bottomland, upland, and shrub/scrub. The study was conducted over a twenty week period using the Li-Cor 8100 “closed chamber” method to measure soil CO2 efflux. The findings show that the bottomland wetland efflux was significantly higher than the shrub/scrub and upland wetland. The pH of shrub/scrub was significantly higher than the upland. The bulk density of the bottomland was significantly lower than the other two wetland types. There was no significant relationship between pH and CO2 efflux, but there was a significant relationship between bulk density and CO2 efflux. The contribution of the study is how understanding soil CO2 efflux in urban wetlands can help to mitigate the effects of climate change.
Collapse of a Magnetized Star to a Black Hole
Creators: name: Baumgarte, Thomas W.
name: Shapiro, Stuart L.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study of the collapse of a magnetized spherical star to a black hole in general relativity theory. The matter and gravitational fields are described by the exact Oppenheimer-Snyder solution for the collapse of a spherical, homogeneous dust ball. We adopt a ``dynamical Cowling approximation'' whereby the matter and the geometry (metric), while highly dynamical, are unaffected by the electromagnetic fields. The matter is assumed to be perfectly conducting and threaded by a dipole magnetic field at the onset of collapse. We determine the subsequent evolution of the magnetic and electric fields without approximation; the fields are determined analytically in the matter interior and numerically in the vacuum exterior. We apply junction conditions to match the electromagnetic fields across the stellar surface. We use this model to experiment with several coordinate gauge choices for handling spacetime evolution characterized by the formation of a black hole and the associated appearance of singularities. These choices range from ``singularity avoiding'' time coordinates to ``horizon penetrating'' time coordinates accompanied by black hole excision. The later choice enables us to integrate the electromagnetic fields arbitrarily far into the future. At late times the longitudinal magnetic field in the exterior has been transformed into a transverse electromagnetic wave; part of the electromagnetic radiation is captured by the hole and the rest propagates outward to large distances. The solution we present for our simple scenario can be used to test codes designed to treat more general evolutions of relativistic MHD fluids flowing in strong gravitational fields in dynamical spacetimes.
description: 22 pages, 12 figures; scheduled for March 10 issue of ApJ
Loop-Cluster Coupling and Algorithm for Classical Statistical Models
Creators: name: Zhang, Lei
name: Michel, Manon
name: Elçi, Eren M.
name: Deng, Youjin
Publisher: name: arXiv
Year: 2019
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Potts spin systems play a fundamental role in statistical mechanics and quantum field theory, and can be studied within the spin, the Fortuin-Kasteleyn (FK) bond or the $q$-flow (loop) representation. We introduce a Loop-Cluster (LC) joint model of bond-occupation variables interacting with $q$-flow variables, and formulate a LC algorithm that is found to be in the same dynamical universality as the celebrated Swendsen-Wang algorithm. This leads to a theoretical unification for all the representations, and numerically, one can apply the most efficient algorithm in one representation and measure physical quantities in others. Moreover, by using the LC scheme, we construct a hierarchy of geometric objects that contain as special cases the $q$-flow clusters and the backbone of FK clusters, the exact values of whose fractal dimensions in two dimensions remain as an open question. Our work not only provides a unified framework and an efficient algorithm for the Potts model, but also brings new insights into rich geometric structures of the FK clusters.
PRINCÍPIO DE FUNCIONAMENTO DE UM ANEMÔMETRO ULTRASSÔNICO.pdf
Creators: name: Wille, Mariano Berwanger
name: Scheunemann, Jean Carlos
name: Sigales, Marlon Soares
name: Fonseca, Mateus Beck
Publisher: name: figshare
Year: 2019
Subjects: subject: 90699 Electrical and Electronic Engineering not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Based on the research, a prototype ultrasonic anemometer was developed in one axis, so that wind measurements could be made in the desired environment. Using three axes, it would be possible to determine wind intensity and direction, for example.
Nuclear Anapole Moments
Creators: name: Haxton, W. C.
name: Liu, C. P.
name: Ramsey-Musolf, M. J.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Nuclear anapole moments are parity-odd, time-reversal-even E1 moments of the electromagnetic current operator. Although the existence of this moment was recognized theoretically soon after the discovery of parity nonconservation (PNC), its experimental isolation was achieved only recently, when a new level of precision was reached in a measurement of the hyperfine dependence of atomic PNC in 133Cs. An important anapole moment bound in 205Tl also exists. In this paper, we present the details of the first calculation of these anapole moments in the framework commonly used in other studies of hadronic PNC, a meson exchange potential that includes long-range pion exchange and enough degrees of freedom to describe the five independent $S-P$ amplitudes induced by short-range interactions. The resulting contributions of pi-, rho-, and omega-exchange to the single-nucleon anapole moment, to parity admixtures in the nuclear ground state, and to PNC exchange currents are evaluated, using configuration-mixed shell-model wave functions. The experimental anapole moment constraints on the PNC meson-nucleon coupling constants are derived and compared with those from other tests of the hadronic weak interaction. While the bounds obtained from the anapole moment results are consistent with the broad ``reasonable ranges'' defined by theory, they are not in good agreement with the constraints from the other experiments. We explore possible explanations for the discrepancy and comment on the potential importance of new experiments.
description: 53 pages; 10 figures; revtex; submitted to Phys Rev C
Tetra louguantais Xue, Song & Hong 2006
Creators: name: Xue, Xiao-Feng
name: Han, Xiao
name: Song, Zi-Wei
name: Hong, Xiao-Yue
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Trombidiformes
Eriophyidae
Tetra
Tetra louguantais

description: Tetra louguantais Xue, Song & Hong, 2006
 Tetra louguantais Xue, Song & Hong, 2006c: 4–6.
 Type material. 4 females and 1 male (slide number NJAUAcariEri222), from Pistacia chinensis Bunge (Anacardiaceae), Louguantai, Zhouzhi County, Shaanxi Province, P. R. China, 34°03'54' N, 108°19'22' E, elevation 500m, 31 August 2004, coll. Xiao-Feng Xue and Zi-Wei Song.
 Host. Pistacia chinensis Bunge (Anacardiaceae).
 Relation to host. Vagrant.
 Distribution. China (Shaanxi).
description: Published as part of Xue, Xiao-Feng, Han, Xiao, Song, Zi-Wei & Hong, Xiao-Yue, 2012, Eriophyoid mite fauna of Shaanxi Province, China, with descriptions of five new species (Acari: Eriophyoidea) 3292, pp. 1-71 in Zootaxa 3292 (1) on page 56, DOI: 10.11646/zootaxa.3292.1.1, http://zenodo.org/record/5250127
Insights on Skyrme parameters from GW170817
Creators: name: Tsang, C. Y.
name: Tsang, M. B.
name: Danielewicz, Pawel
name: Lynch, W. G.
name: Fattoyev, F. J.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The binary neutron-star merger event, GW170817, has cast a new light on nuclear physics research. Using a neutron-star model that includes a crust equation of state (EoS), we calculate the properties of a 1.4 solar-mass neutron star. The model incorporates more than 200 Skyrme energy density functionals, which describe nuclear matter properties, in the outer liquid core region of the neutron star. We find a power-law relation between the neutron-star tidal deformability, $Λ$, and the neutron-star radius, R. Without an explicit crust EoS, the model predicts smaller R and the difference becomes significant for stars with large radii. To connect the neutron star properties with nuclear matter properties, we confront the predicted values for $Λ$, against the Taylor expansion coefficients of the Skyrme interactions. There is no pronounced correlation between Skyrme parameters in symmetric nuclear matter and neutron star properties. However, we find the strongest correlation between $Λ$ and $K_{sym}$, the curvature of the density dependence of the symmetry energy at saturation density. At twice the saturation density, our calculations show a strong correlation between $Λ$ and total pressure providing guidance to laboratory nucleus-nucleus collision experiments.
Geometric quantization of completely integrable Hamiltonian systems in the action-angle variables
Creators: name: Giachetta, G.
name: Mangiarotti, L.
name: Sardanashvily, G.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We provide geometric quantization of a completely integrable Hamiltonian system in the action-angle variables around an invariant torus with respect to polarization spanned by almost-Hamiltonian vector fields of angle variables. The associated quantum algebra consists of functions affine in action coordinates. We obtain a set of its nonequivalent representations in the separable pre-Hilbert space of smooth complex functions on the torus where action operators and a Hamiltonian are diagonal and have countable spectra.
description: 8 pages
Tetra pinnatifidae Xue, Song & Hong 2006
Creators: name: Xue, Xiao-Feng
name: Han, Xiao
name: Song, Zi-Wei
name: Hong, Xiao-Yue
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Trombidiformes
Eriophyidae
Tetra
Tetra pinnatifidae

description: Tetra pinnatifidae Xue, Song & Hong, 2006
 Tetra pinnatifidae Xue, Song & Hong, 2006c: 6–8.
 Type material. 5 females and 2 males (slide number NJAUAcariEri228), from Crataegus pinnatifida Bunge (Rosaceae), Taibai Mountain, Mei County, Shaanxi Province, P. R. China, 34°01'51' N, 107°48'36' E, elevation 2810m, 1 September 2004, coll. Xiao-Feng Xue & Zi-Wei Song.
 Host. Crataegus pinnatifida Bunge (Rosaceae).
 Relation to host. Vagrant.
 Distribution. China (Shaanxi).
description: Published as part of Xue, Xiao-Feng, Han, Xiao, Song, Zi-Wei & Hong, Xiao-Yue, 2012, Eriophyoid mite fauna of Shaanxi Province, China, with descriptions of five new species (Acari: Eriophyoidea) 3292, pp. 1-71 in Zootaxa 3292 (1) on page 56, DOI: 10.11646/zootaxa.3292.1.1, http://zenodo.org/record/5250127
WeCanConnect: Development of a Community-Informed mHealth Tool for People with Disabilities and Cancer
Creators: name: Magasi, Susan
name: Banas, Jennifer
name: Bruriah Horowitz
name: Reis, Judy Panko
name: The, Kimberly
name: Wilson, Tom
name: Victoson, David
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: Uncategorized

description: BACKGROUND: Cancer care for people with disabilities (PWD) is rife with uncertainty and obstacles. Not only do PWD have to contend with cancer and treatment-related sequelae, but also its impact on disabling conditions and functional capacity, as well as a health care system lacking accessibility and disability competence. Peer support can address important needs for emotional and informational support. mHealth tools for smart phones, tablets, or laptops hold promise to deliver such support in an accessible and scalable manner. This concept is unexplored for use among PWD with cancer. OBJECTIVES: To describe a community-based participatory study that 1) identifies consumer-reported support needs and priorities among PWD and cancer and 2) integrates consumer perspectives into the design of an mHealth cancer support tool to address these needs and priorities. METHODS: Part 1 is a thematic analysis of semistructured, qualitative interviews with a purposive sample of experts in health and cancer care for PWD (n = 7) and a convenience sample of cancer survivors with preexisting disabilities (n = 9). In part 2, results were integrated to develop an mHealth peer support tool to addresses identified needs. RESULTS: Themes included 1) barriers across the cancer care continuum, 2) strengths within the disability community, and 3) recommendations for mHealth and peer support. Based on the qualitative findings, we designed a mHealth tool for peer support and information sharing among PWD with cancer. CONCLUSION: Consumer-informed mHealth tools hold great potential to leverage strengths in the disability community to address emotional and informational needs created by a lack of disability competence across the cancer care continuum.