cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Endangered Species Act Section 7(a)(2) Biological Opinion and Magnuson-Stevens Fishery Conservation and Management Act Essential Fish Habitat Response for the San Lorenzo River Bridge and Kings Creek Bridge Replacement (05-1H470)
Creators: name: United States. National Marine Fisheries Service. West Coast Region
Publisher: name: United States. National Marine Fisheries Service. West Coast Region
Year: 2020

description: ESA Section 7 Consultation ; WCRO-2020-02273
The Holocene palaeolimnology of Lake Fidler, a meromictic lake in the cool temperate rainforests of south west Tasmania
Creators: name: Hodgson, DA
Publisher: name: University Of Tasmania
Year: 2023

description: Lake Fidler is situated adjacent to the lower Gordon River in the Franklin Lower Gordon Wild Rivers National Park of south west Tasmania It is the only stable meromictic lake in cool temperate rainforest in Australia and facets of its unique biology, phycology and limnology have been abundantly published in over 20 scientific papers. This study uses palaeolimnological techniques to place existing knowledge in the context of the long term history and evolution of Lake Fidler. This has allowed an assessment of the impact of modifications to the hydro-dynamics of the river, by a dam further upstream, on the declining meromictic stability of the lake. The study comprises two parts. The first part describes the use of remote data loggers to monitor the hydrodynamics of the lake and river and the ectogenic mechanism which maintains meromixis through periodic incursions of brackish water. This has resulted in reconunendations for a management strategy to prevent the further decay of meromixis. The second part, a palaeolimnological study, reconstructs the history of meromixis and the palaeoecology of the lower Gordon River region. A 17 metre sediment core, datmg back 8000 years, was analysed for fossil diatoms and pigments. Fossil diatoms provided specific information on the genesis of the lake from a brackish riverine backwater to an autonomous meromictic lake with a fresh water mixolinmion dominated by Cyclotella stelligera. The ultimate stability of this freshwater mixolimnetic assemblage is interpreted as the time at which the lake became permanently stratified. The development of biological communities associated with meromixis was also studied using fossil pigments. The most diagnostic pigments were the bacteriochlorophylls of the anaerobic green phototrophic sulphur bacteria, Chlorobium limicola and Chlorochromatium aggregatum, which obligately require the conditions of the chemocline to maintain their abundance. The establishment of these organisms concomitant with the development of permanent stratification also confirms the onset of meromictic conditions. The palaeolimnological studies, in tandem with studies of fossil pollen, have additionally provided information on the Holocene palaeoecology and palaeoclimatology of south west Tasmania during the later phases of Aboriginal occupation. This included the possible evolution of a wanner and wetter climate and the development of a mature cool temperate rainforest in floristic refugia that have remained undisturbed since the last ice age.
title: Endangered Species Act Section 7(a)(2) Biological Opinion, and Magnuson-Stevens Fishery Conservation and Management Act Essential Fish Habitat Response for the Pescadero Creek Lagoon Interim Solutions Project
Creators: name: United States. National Marine Fisheries Service. West Coast Region
Publisher: name: United States. National Marine Fisheries Service. West Coast Region
Year: 2020

description: ESA Section 7 Consultation ; WCRO-2020-03294
Oil Palm Expansion and Smallholder Farm Households in Cameroon
Creators: name: Tabe-Ojong, Martin Paul
name: Ordway, Elsa
name: Nkongho, Raymond N
name: Molua, Ernest L.
name: Tabe-Ojong, Martin Paul
name: Ordway, Elsa
name: Nkongho, Raymond N
name: Molua, Ernest L.
Publisher: name: Unknown
Year: 2021
Subjects: Crop Production/Industries
Farm Management

description: Paper# 19291
Magnetic field-induced phase transitions in a weakly coupled s = 1/2 quantum spin dimer system Ba$_{3}$Cr$_{2}$O$_{8}$
Creators: name: Kofu, M.
name: Ueda, H.
name: Nojiri, H.
name: Oshima, Y.
name: Zenmoto, T.
name: Rule, K.
name: Gerischer, S.
name: Lake, B.
name: Batista, C. D.
name: Ueda, Y.
name: Lee, S. -H.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: By using bulk magnetization, electron spin resonance (ESR), heat capacity, and neutron scattering techniques, we characterize the thermodynamic and quantum phase diagrams of Ba$_3$Cr$_2$O$_8$. Our ESR measurements indicate that the low field paramagnetic ground state is a mixed state of the singlet and the S$_z$ = 0 triplet for $H \perp c$. This suggests the presence of an intra-dimer Dzyaloshinsky-Moriya (DM) interaction with a DM vector perpendicular to the c-axis.
The electronic structure and the formation of polarons in Mo-doped BiVO4 measured by angle-resolved photoemission spectroscopy
Creators: name: Mohamed, Mansour
name: May, Matthias M.
name: Kanis, Michael
name: Brützam, Mario
name: Uecker, Reinhard
name: Van De Krol, Roel
name: Janowitz, Christoph
name: Mulazzi, Mattia
Publisher: name: London : RSC Publishing
Year: 2019
Subjects: subject: Mo-doped BiVO4 high-quality single-crystals
subject: angle-resolved photoelectron spectroscopy (ARPES)
subject: polarons
subject: 540

description: We experimentally investigated the electronic structure of Mo-doped BiVO4 high-quality single-crystals with synchrotron radiation-excited angle-resolved photoelectron spectroscopy (ARPES). By photon-energy dependent ARPES, we measured the bulk-derived valence band dispersion along the direction normal to the (010) cleavage plane, while the dispersion along the in-plane directions is obtained by angle-dependent measurements at fixed photon energy. Our data show that the valence band has a width of about 4.75 eV and is composed of many peaks, the two most intense have energies in good agreement with the theoretically calculated ones. A non-dispersive feature is observed in the fundamental gap, which we attribute to quasiparticle excitations coupling electrons and phonons, i.e. polarons. The determination of the polaron peak binding energy and bulk band gap allows to fix the value of the theoretical mixing parameter necessary in hybrid Hartree–Fock calculations to reproduce the experimental data. The attribution of the in-gap peak to polarons is strengthened by our discussion in the context of experimental transport data and ab initio theory.
Ghosts in the Attic: Mapping the Stellar Content of the S0 Galaxy NGC 5102
Creators: name: Davidge, T. J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The spatial distribution of stars in the nearby S0 galaxy NGC 5102 is investigated using images obtained with WIRCam and MegaCam on the Canada-France-Hawaii Telescope. With the exception of gaps between detector elements, the entire galaxy is surveyed in r' and i', while the J and Ks data extend out to 6 kpc (7 disk scale lengths). A modest population of main sequence (MS) stars with M_V < -3.5 and ages 70 Myr are detected throughout the disk, with the majority located in the southern half of the galaxy. The ratio of C stars to bright M giants is consistent with an overall increase in the star formation rate within the past 1 Gyr. Star-forming activity during the interval 0.1 - 2 Gyr was more centrally concentrated than during the past 100 Myr. The structure of the disk changes near 5 kpc (5.5 disk scale lengths). RSGs and bright AGB stars are traced out to a radius of 14 kpc (15.6 scale lengths) along the southern portion of the major axis, while a tentative detection is also made of bright AGB stars at a projected distance of 16 kpc along the south east minor axis. A large clump of AGB stars that subtends an arcmin is identified to the west of the galaxy center. It is argued that this is the remnant of a companion galaxy that triggered past episodes of elevated star-forming activity.
description: Accepted for publication in the AJ
Green-Emissive Zn2+ Complex Supported by a Macrocyclic Schiff-Base/Calix[4]arene-Ligand: Crystallographic and Spectroscopic Characterization
Creators: name: Ullmann, Steve
name: Börner, Martin
name: Kahnt, Axel
name: Abel, Bernd
name: Kersting, Berthold
Publisher: name: Weinheim : Wiley-VCH
Year: 2021
Subjects: subject: Calixarenes
subject: Photophysical properties
subject: Salicylaldiminato ligand
subject: Self-assembly
subject: Zinc
subject: 540

description: The macrocyclic calix[4]arene ligand H2L comprises two non-fluorescent 2,6-bis-(iminomethyl)phenolate chromophores, which show a chelation-enhanced fluorescence enhancement upon Zn2+ ion complexation. Macrocyclic [ZnL] complexes aggregate in the absence of external coligands via intermolecular Zn−N bonds to give dimeric [ZnL]2 structures comprising two five-coordinated Zn2+ ions. The absorption and emission wavelengths are bathochromically shifted upon going from the liquid (λmax,abs (CH2Cl2)=404 nm, λmax,em (CH2Cl2)=484 nm) to the solid state (λmax,abs=424 nm (4 wt%, BaSO4 pellet), λmax,em=524 nm (neat solid)). Insights into the electronic nature of the UV-vis transitions were obtained with time-dependent density functional theory (TD-DFT) calculations for a truncated model complex.
Impact of Covid-19 on Farm Households in Punjab and Sindh, Pakistan: Analysis from Cross-Sectional Surveys
Creators: name: Wasim, Babur
name: Yamano, Takashi
name: Sato, Noriko
name: Wasim, Babur
name: Yamano, Takashi
name: Sato, Noriko
Publisher: name: Unknown
Year: 2021
Subjects: Health Economics and Policy
Farm Management

description: Paper# 19315
title: Endangered Species Act Section 7(a)(2) Biological Opinion, and Magnuson-Stevens Fishery Conservation and Management Act Essential Fish Habitat Response for the I-5 Northbound Marine View Drive to SR 529 Corridor and Interchange Improvements Project, Snohomish County, Washington (Quilceda Creek-Frontal Possession Sound 6th Field HUC 171100110203).
Creators: name: United States. National Marine Fisheries Service. West Coast Region
Publisher: name: United States. National Marine Fisheries Service. West Coast Region
Year: 2021

description: ESA Section 7 Consultation ; WCRO-2020-00049
AI-Enabled Planning and Control for Aeronautical Ad-Hoc Networks
Creators: name: Shahbazi Dastjerdi, Mohsen
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2023
Subjects: AANET
In-Flight Connectivity

description: In-Flight Entertainment and Connectivity (IFEC) is becoming a key trend and offering in-flight connectivity is one of the most essential demands of commercial airline passengers. A grand challenge is to provide in-flight connectivity in high altitudes and particularly in isolated locations, such as the oceans, where establishing an air-to-ground link is not possible. Moreover, the high speed and dynamic characteristics of such aircraft make this task difficult. Aeronautical Ad-Hoc Networking (AANET) intends to cope with this challenge by forming a network of airplanes having air-to-air (A2A) connections. However, the dynamic nature of such a network is likely to lead to unstable connections. The primary root cause of the majority of these stability issues is known to be the short life of A2A links which is the result of poor topology formation of aircraft. Concentrating on aircraft clustering and making them more stable can improve connection lifetime and improve the stability and performance of the network. Therefore the main objective in making AANETs feasible should be to form the topology as clusters of aircraft. With this in mind, the thesis's proposition is twofold: First, unveil the benefits of density-based clustering to improve the AANET performance. To do so, a modified DBSCAN algorithm is employed for the clustering problem that exploits several features of real flight datasets. This method also includes a weighted scheme to reflect the relative importance of each feature of the final calculation. The proposed method improved the packet delivery ratio and end-to-end latency of the state-of-the-art clustering-based AANET solutions by 51 % and 30 %, respectively. In addition, the proposed approach reduces the number of cluster changes by 22%. Second, selecting a well-connected cluster head is the next stage in enhancing connection and stability. This thesis presents a new cluster head selection technique for AANETs that calculates the Neighbor Nodes within a given distance of each node and selects the node with the most connections as the new cluster head. In instances where a cluster head cannot interact directly with another cluster, a Gateway node is chosen to facilitate connection with other clusters. According to simulations, the suggested method increases packet delivery ratio by 3, end-to-end delay by 9 and throughput by up to 10% compared to the current state of the art. In addition, the proposed method reduces cluster head replacements by 17% and increases cluster head longevity by 8%.
Prospects for Higgs Searches at the Tevatron and LHC in the MSSM with Explicit CP-violation
Creators: name: Draper, Patrick
name: Liu, Tao
name: Wagner, Carlos E. M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We analyze the Tevatron and Large Hadron Collider (LHC) reach for the Higgs sector of the Minimal Supersymmetric Standard Model (MSSM) in the presence of explicit CP-violation. Using the most recent studies from the Tevatron and LHC collaborations, we examine the CPX benchmark scenario for a range of CP-violating phases in the soft trilinear and gluino mass terms and compute the exclusion/discovery potentials for each collider on the $(M_{H^+}, \tanβ)$ plane. Projected results from Standard Model (SM)-like, non-standard, and charged Higgs searches are combined to maximize the statistical significance. We exhibit complementarity between the SM-like Higgs searches at the LHC with low luminosity and the Tevatron, and estimate the combined reach of the two colliders in the early phase of LHC running.
description: 38 pages, 9 figures; References added, minor additions to Appendix A
Additional file 7 of Proteomics and metabolomics profiling reveal panels of circulating diagnostic biomarkers and molecular subtypes in stable COPD
Creators: name: Zhang, Zili
name: Wang, Jian
name: Li, Yuanyuan
name: Liu, Fei
name: Chen, Lingdan
name: He, Shunping
name: Lin, Fanjie
name: Wei, Xinguang
name: Fang, Yaowei
name: Li, Qiongqiong
name: Zhou, Juntuo
name: Lu, Wenju
Publisher: name: figshare
Year: 2023
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Virology

description: Additional file 7: Table S2. Predictive efficacy of single biomarker.
Competitiveness of Currently Practiced and Alternative Cotton Production Methods in Meatu District, Tanzania
Creators: name: Baha, Michael
name: Henningsen, Arne
name: Elleby, Christian
name: Mlay, Gilead
name: Baha, Michael
name: Henningsen, Arne
name: Elleby, Christian
name: Mlay, Gilead
Publisher: name: Unknown
Year: 2021
Subjects: Crop Production/Industries
Research and Development/Tech Change/Emerging Technologies

description: Paper# 19316
The Tasmanian Government and the metal mining industry - An administrative history: 1880-1914
Creators: name: Roberts, GT
Publisher: name: University Of Tasmania
Year: 2023

description: This dissertation carries forward in time earlier work concerned with the relationship between the Tasmanian government and the metal mining industry from the foundation of the colony in 1804. It covers the period from 1880 to 1914. By 1880, metal mining was well established as a major industry, vying with agriculture as the economic driving force. As the industry grew, the Government was faced with increasing problems resulting from a lack of infrastructure in the main mineral fields which were located in largely uninhabited areas in the northern half of the state. In order to maintain control and offer assistance, the Government gradually increased the numbers of administrative and technical staff, albeit sometimes reluctantly. Particularly in the technical area, politicians were sometimes slow to address shortcomings, for example in data collection. This resulted in delays between the onset of problems and appropriate official reaction, often to the detriment of the industry progress. Earlier work adopted a continuous narrative approach but the increasing complexity of issues arising from 1880 necessitated a change to more rigorous discussion of specific topics. Whilst no attempt has been made to compare Tasmanian practices with those in other colonies, relevant observations are made where appropriate. Chapters 1 and 2 review the political background and the roles played by the civil service. Chapter 3 discusses the importance of education in an industry changing from the use of simple techniques to a more sophisticated environment requiring skilled men. Chapter 4 traces the growth of legislation in response to change and specific Government initiatives adopted to assist mining development are described in Chapter 5. The successes and shortcomings of Government involvement in the main mining fields are discussed in Chapter 6-9. Development of the North East tin fields is the subject of Chapter 6 The West Coast south of the Pieman River figures in Chapters 7, 8 and 9. Chapters 7 and 8 are concerned with general developmental issues while Chapter 9 examines in more detail the particular practical and political problems posed in deciding on and providing satisfactory all-season access between the remainder of the colony and the West Coast. Eight appendices and ten figures are included. Figs. 1 and 2 summarise basic data in time-line fonn. Figs. 3, 6, 7, 8 and 9 are designed to assist with an areal appreciation of the mining fields in a colony-wide context, while more detailed locations of specific features are illustrated for the North East (Fig. 4) and the West Coast (Figs. 5 and 10).
Representation of entanglement by negative quasi-probabilities
Creators: name: Sperling, J.
name: Vogel, W.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Any bipartite quantum state has quasi-probability representations in terms of separable states. For entangled states these quasi-probabilities necessarily exhibit negativities. Based on the general structure of composite quantum states, one may reconstruct such quasi-propabilities from experimental data. Because of ambiguity, the quasi-probabilities obtained by the bare reconstruction are insufficient to identify entanglement. An optimization procedure is introduced to derive quasi-probabilities with a minimal amount of negativity. Negativities of optimized quasi-probabilities unambiguously prove entanglement, their positivity proves separability.
description: 9 pages, 2 figures; An optimization procedure for the quasi-probabilities has been added
Axions from Intersecting Branes and Decoupled Chiral Fermions at the Large Hadron Collider
Creators: name: Coriano, Claudio
name: Guzzi, Marco
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a study of a class of effective actions which show typical axion-like interactions, and of their possible effects at the Large Hadron Collider. One important feature of these models is the presence of one pseudoscalar which is a generalization of the Peccei-Quinn axion. This can be very light and very weakly coupled, with a mass which is unrelated to its couplings to the gauge fields, described by Wess Zumino interactions. We discuss two independent realizations of these models, one derived from the theory of intersecting branes and the second one obtained by decoupling one chiral fermion per generation (one right-handed neutrino) from an anomaly-free mother theory. The key features of this second realization are illustrated using a simple example. Charge assignments of intersecting branes can be easily reproduced by the chiral decoupling approach, which remains more general at the level of the solution of its anomaly equations. Using considerations based on its lifetime, we show that in brane models the axion can be dark matter only if its mass is ultralight ($\sim 10^{-4}$ eV), while in the case of fermion decoupling it can reach the GeV region, due to the absence of fermion couplings between the heavy Higgs and the light fermion spectrum. For a GeV axion derived from brane models we present a detailed discussion of its production rates at the LHC.
description: 64 pages, 15 Figs
Flow characteristics of fluid-solid mixtures
Creators: name: Johnson, Norman Allan
Publisher: name: University of British Columbia
Year: 2011

description: This thesis deals with pneumatic conveying in a closed duct. The closed duct consists of approximately 260 feet of 2-inch standard pipe made up of horizontal, vertical, and elbow sections. An expression is developed which provides the pressure differential between the two ends of the closed duct in terms of the variables which appear to affect two-phase flow. The development and assembly of the apparatus used in studying and evaluating the theory is described in considerable detail, with a view to future work in this field. The data acquired from the experimental apparatus is analysed in an attempt to correlate the various flow resistance factors, due to the particulate phase, with the characteristics of the particulate material. The results and conclusions derived from the experimentation and analysis described herein, while not definitive, shed some new light on the complexities of two-phase flow and provide a rational empirical approach to the study of two-phase flow systems.
Highly Conductive, Stretchable, and Cell-Adhesive Hydrogel by Nanoclay Doping
Creators: name: Tondera, Christoph
name: Akbar, Teuku Fawzul
name: Thomas, Alvin Kuriakose
name: Lin, Weilin
name: Werner, Carsten
name: Busskamp, Volker
name: Zhang, Yixin
name: Minev, Ivan R.
Publisher: name: Weinheim : Wiley-VCH
Year: 2019
Subjects: subject: 3D printing
subject: bioelectronics
subject: conductive polymers
subject: induced pluripotent stem cells
subject: interpenetrating network
subject: 570
subject: 620

description: Electrically conductive materials that mimic physical and biological properties of tissues are urgently required for seamless brain-machine interfaces. Here, a multinetwork hydrogel combining electrical conductivity of 26 S m-1 , stretchability of 800%, and tissue-like elastic modulus of 15 kPa with mimicry of the extracellular matrix is reported. Engineering this unique set of properties is enabled by a novel in-scaffold polymerization approach. Colloidal hydrogels of the nanoclay Laponite are employed as supports for the assembly of secondary polymer networks. Laponite dramatically increases the conductivity of in-scaffold polymerized poly(ethylene-3,4-diethoxy thiophene) in the absence of other dopants, while preserving excellent stretchability. The scaffold is coated with a layer containing adhesive peptide and polysaccharide dextran sulfate supporting the attachment, proliferation, and neuronal differentiation of human induced pluripotent stem cells directly on the surface of conductive hydrogels. Due to its compatibility with simple extrusion printing, this material promises to enable tissue-mimetic neurostimulating electrodes.
IMPACT: Prevalence and Predictors of High-Intensity End-of-Life Care Among Adolescents and Young Adults with Cancer in Ontario
Creators: name: Coltin, Hallie
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2021
Subjects: Cancer
End-of-life
Adolescent
Young adult

description: Adolescents and young adults (AYA) with cancer may experience disproportionate rates of high-intensity (HI) end-of-life (EOL) care. We conducted a population-based linkage study examining a decedent cohort of all Ontario AYA aged 15-21 years diagnosed with six primary cancers between 1992-2012. The primary composite outcome (HI-EOL care) included any of: intravenous chemotherapy ≤14 days from death; >1 emergency department visit; >1 hospitalization; or any intensive care unit (ICU) admission ≤30 days from death. Secondary outcomes included hospital deaths and measures of most invasive (MI)-EOL care. The outcome prevalence trends were examined, as were the predictors using regression models. Of 483 patients, 292 (60.5%) experienced HI-EOL care. AYA with hematological malignancies and relapsed disease experienced the highest and lowest odds of all outcomes, respectively. The prevalence of MI-EOL care may be increasing, especially for pediatric patients. This work is the first to identify LOC-based disparities in AYA EOL care.
Pulsating Variable Stars in the Coma Berenices dwarf spheroidal galaxy
Creators: name: Musella, I.
name: Ripepi, V.
name: Clementini, G.
name: Dall'Ora, M.
name: Kinemuchi, K.
name: Di Fabrizio, L.
name: Greco, C.
name: Marconi, M.
name: Smith, H.
name: Radovich, M.
name: Beers, T.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present B, V, I time-series photometry of the Coma Berenices dwarf spheroidal galaxy, a faint Milky Way satellite, recently discovered by the Sloan Digital Sky Survey. We have obtained V, B-V and V, V-I color-magnitude diagrams that reach V~23.0-23.2 mag showing the galaxy turnoff at V~21.7 mag, and have performed the first study of the variable star population of this new Milky Way companion. Two RR Lyrae stars (a fundamental-mode -RRab- and a first overtone -RRc- pulsator) and a short period variable with period P=0.12468 days were identified in the galaxy. The RRab star has a rather long period of P_ab=0.66971 days and is about 0.2 mag brighter than the RRc variable and other non-variable stars on the galaxy horizontal branch. In the period-amplitude diagram the RRab variable falls closer to the loci of Oosterhoff type-II systems and evolved fundamental-mode RR Lyrae stars in the Galactic globular cluster M3. The average apparent magnitude of the galaxy horizontal branch, =18.64+-0.04 mag, leads to a distance modulus for the Coma dSph mu_0=18.13+-0.08 mag, corresponding to a distance d=42^{+2}_{-1} kpc, by adopting a reddening E(B-V) = 0.045 +- 0.015 mag and a metallicity [Fe/H]=-2.53 +- 0.05 dex.
description: 14 pages, 3 figures, Accepted for publication in ApJL
A Symplectic Integrator for Hill's Equations
Creators: name: Quinn, T.
name: Perrine, R. P.
name: Richardson, D. C.
name: Barnes, R.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Hill's equations are an approximation that is useful in a number of areas of astrophysics including planetary rings and planetesimal disks. We derive a symplectic method for integrating Hill's equations based on a generalized leapfrog. This method is implemented in the parallel N-body code, PKDGRAV and tested on some simple orbits. The method demonstrates a lack of secular changes in orbital elements, making it a very useful technique for integrating Hill's equations over many dynamical times. Furthermore, the method allows for efficient collision searching using linear extrapolation of particle positions.
description: 15 pages, 2 figures; minor revisions; accepted for publication in the Astronomical Journal
Realigning Policy Interventions on Agricultural Prices: Monitoring Incentives to Facilitate Economic Recovery in the Post-COVID-19 Era
Creators: name: Consoli, Sarah
name: Opazo, Cristian Morales
name: Yerovi, Juan José Egas
name: Consoli, Sarah
name: Opazo, Cristian Morales
name: Yerovi, Juan José Egas
Publisher: name: Unknown
Year: 2021
Subjects: Agricultural and Food Policy
Demand and Price Analysis

description: Paper# 19446
Spanning trees for the geometry and dynamics of compact polymers
Creators: name: Rahmani, Armin
name: Velenich, Andrea
name: Chamon, Claudio
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Using a mapping of compact polymers on the Manhattan lattice to spanning trees, we calculate exactly the average number of bends at infinite temperature. We then find, in a high temperature approximation, the energy of the system as a function of bending rigidity and polymer elasticity. We identify the universal mechanism for the relaxation of compact polymers and then endow the model with physically motivated dynamics in the convenient framework of the trees. We find aging and domain coarsening after quenches in temperature. We explain the slow dynamics in terms of the geometrical interconnections between the energy and the dynamics.
description: 10 pages, 8 figures
Sowing the Seeds of Hunger. When Agriculture Fails to Deliver Its Pro-Poor Promise, Paraguay 2001 - 2017
Creators: name: Anriquez, Gustavo
name: Quiñonez, Fabrizio
name: Anriquez, Gustavo
name: Quiñonez, Fabrizio
Publisher: name: Unknown
Year: 2021
Subjects: Food Consumption/Nutrition/Food Safety
Agricultural and Food Policy

description: Paper# 19461
Redeemer of man: encyclical Redemptor hominis. addressed by the Supreme Pontiff John Paul II to his venerable brothers in the episcopate, the priests, the religious families, the sons and daughters of the Church, and to all men and women of good will at the beginning of his papal ministry, March 4, 1979.
Creators: name: Catholic Church.Pope (1978-2005 : John Paul II).
Publisher: name: University of Notre Dame
Year: 2023

description:
 On cover: First encyclical letter Redemptor hominis, Pope John Paul II, March 4, 1979.
 Redemptor hominis.
Direct Simulations of Particle Acceleration in Fluctuating Electromagnetic Field across a Shock
Creators: name: Muranushi, Takayuki
name: Inutsuka, Shu-ichiro
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We simulate the acceleration processes of collisionless particles in a shock structure with magnetohydrodynamical (MHD) fluctuations. The electromagnetic field is represented as a sum of MHD shock solution ($\Mag_0, \Ele_0$) and torsional Alfven modes spectra ($δ\Mag, δ\Ele $). We represent fluctuation modes in logarithmic wavenumber space. Since the electromagnetic fields are represented analytically, our simulations can easily cover as large as eight orders of magnitude in resonant frequency, and do not suffer from spatial limitations of box size or grid spacing. We deterministically calculate the particle trajectories under the Lorenz force for time interval of up to ten years, with a time step of $\sim 0.5 \sec$. This is sufficient to resolve Larmor frequencies without a stochastic treatment. Simulations show that the efficiency of the first order Fermi acceleration can be parametrized by the fluctuation amplitude $η\equiv < δB^2 > ^{\frac 1 2} {B_0}^{-1}$ . Convergence of the numerical results is shown by increasing the number of wave modes in Fourier space while fixing $η$. Efficiency of the first order Fermi acceleration has a maximum at $ η\simeq 10^1$. The acceleration rate depends on the angle between the shock normal and $\Mag_0$, and is highest when the angle is zero. Our method will provide a convenient tool for comparing collisionless turbulence theories with, for example, observations of bipolar structure of super nova remnants (SNRs) and shell-like synchrotron-radiating structure.
description: 11 pages, 4 figures, accepted for publication in The Astrophysical Journal letters
Construction of Eukaryotic Cell Biomimetics: Hierarchical Polymersomes-in-Proteinosome Multicompartment with Enzymatic Reactions Modulated Protein Transportation
Creators: name: Wen, Ping
name: Wang, Xueyi
name: Moreno, Silvia
name: Boye, Susanne
name: Voigt, Dagmar
name: Voit, Brigitte
name: Huang, Xin
name: Appelhans, Dietmar
Publisher: name: Weinheim : Wiley-VCH
Year: 2021
Subjects: subject: biological responses
subject: cell engineering
subject: multicompartments
subject: polymersomes
subject: proteinosomes
subject: 570
subject: 620

description: The eukaryotic cell is a smart compartment containing an outer permeable membrane, a cytoskeleton, and functional organelles, presenting part structures for life. The integration of membrane-containing artificial organelles (=polymersomes) into a large microcompartment is a key step towards the establishment of exquisite cellular biomimetics with different membrane properties. Herein, an efficient way to construct a hierarchical multicompartment composed of a hydrogel-filled proteinosome hybrid structure with an outer homogeneous membrane, a smart cytoskeleton-like scaffold, and polymersomes is designed. Specially, this hybrid structure creates a micro-environment for pH-responsive polymersomes to execute a desired substance transport upon response to biological stimuli. Within the dynamic pH-stable skeleton of the protein hydrogels, polymersomes with loaded PEGylated insulin biomacromolecules demonstrate a pH-responsive reversible swelling-deswelling and a desirable, on-demand cargo release which is induced by the enzymatic oxidation of glucose to gluconic acid. This stimulus responsive behavior is realized by tunable on/off states through protonation of the polymersomes membrane under the enzymatic reaction of glucose oxidase, integrated in the skeleton of protein hydrogels. The integration of polymersomes-based hybrid structure into the proteinosome compartment and the stimuli-response on enzyme reactions fulfills the requirements of eukaryotic cell biomimetics in complex architectures and allows mimicking cellular transportation processes.
DEADLY SUBSCRIPTION: LEGAL PROTECTION OF CHILDREN AT RISK IN THE DIGITAL WORLD
Creators: name: Alimov O.T.
name: Batayeva, K.B.
Publisher: name: Вестник науки
Year: 2025
Subjects: manipulative bots
deadly games
harmful content
digital environment
age-inappropriate information
online games
curators
legal precedent

description: This article explores the issue of legal protection for children in the digital environment. It focuses in particular on the risks posed by children's involvement in dangerous online games, interactions with manipulative bots, and exposure to harmful content. The authors examine legal and regulatory frameworks designed to safeguard children's rights, including both national and international legislation. In conclusion, the authors propose amendments to existing laws to enhance the protection of children from destructive digital content.
AMPA-15N - Synthesis and application as standard compound in traceable degradation studies of glyphosate
Creators: name: Wirth, Marisa A.
name: Longwitz, Lars
name: Kanwischer, Marion
name: Gros, Peter
name: Leinweber, Peter
name: Werner, Thomas
Publisher: name: Amsterdam : Elsevier
Year: 2021
Subjects: subject: Aminomethylphosphonic acid
subject: Isotope labeling
subject: Lysimeter
subject: Pesticide degradation
subject: Tandem mass spectrometry
subject: 610

description: Stable isotope labeling of pollutants is a valuable tool to investigate their environmental transport and degradation. For the globally most frequently used herbicide glyphosate, such studies have, so far, been hampered by the absence of an analytical standard for its labeled metabolite AMPA-15N, which is formed during the degradation of all commercially available glyphosate isotopologues. Without such a standard, detection and quantitation of AMPA-15N, e.g. with LC-MS/MS, is not possible. Therefore, a synthetic pathway to AMPA-15N from benzamide-15N via the hemiaminal was developed. AMPA-15N was obtained in sufficient yield and purity to be used as a standard compound for LC-MS/MS analysis. Suitable MS-detection settings as well as a calibration using the internal standard (IS) approach were established for Fmoc-derivatized AMPA-15N. The use of different AMPA isotopologues as IS was complicated by the parallel formation of [M+H]+ and [M]+• AMPA-Fmoc precursor ions in ESI-positive mode, causing signal interferences between analyte and IS. We recommend the use of either AMPA-13C-15N, AMPA-13C-15N-D2 or a glyphosate isotopologue as IS, as they do not affect the linearity of the calibration curve. As a proof of concept, the developed analysis procedure for AMPA-15N was used to refine the results from a field lysimeter experiment investigating leaching and degradation of glyphosate-2-13C-15N. The newly enabled quantitation of AMPA-15N in soil extracts showed that similar amounts (0.05 - 0.22 mg·kg-1) of the parent herbicide glyphosate and its primary metabolite AMPA persisted in the topsoil over the study period of one year, while vertical transport through the soil column did not occur for either of the compounds. The herein developed analysis concepts will facilitate future design and execution of experiments on the environmental fate of the herbicide glyphosate.
Do Youth Farmers Benefit from Participating in Contract Farming: Evidence from French Beans Youth Farmers in Arusha, Tanzania
Creators: name: Marwa, Erick
name: Manda, Julius
name: Marwa, Erick
name: Manda, Julius
Publisher: name: Unknown
Year: 2021
Subjects: Crop Production/Industries
Community/Rural/Urban Development

description: Paper# 19479
Statement to youth on school-based clinics. National Conference of Catholic Bishops.
Creators: name: Catholic Church.National Conference Of Catholic Bishops.Administrative Committee.
Publisher: name: University of Notre Dame
Year: 2023

description:
 With a Spanish translation of the same publication entitled: Declaración a los jóvenes sobre clínicas en escuelas.
 Prepared by the NCCB Committee for Pro-Life Activities.
 School-based clinics.
 Declaración a los jovenes sobre clńicas en escuelas.
INFLUENCE OF PERMANENT MAGNET SIZE ON MAGNETIC PARAMETERS BASED ON MAGNETIC SYSTEM’S APPLICATION
Creators: name: Hovhannisyan, A.T.
Publisher: name: Вестник науки
Year: 2025
Subjects: permanent magnet
dimensions
magnetic system
magnetic parameters

description: The workpresents the operating points of a cylindrical permanent magnet and the magnetic field parameters outside the magnetic pole depending on the application of the magnetic system (open, partially closed, and closed) at a constant volume. For the study, a cylindrical permanent magnet N35 with dimensions of 30x10[mmxmm] (base) was studied by changing the diameter and length while maintaining a constant volume. The effect of the PM dimensions on the main magnetic parameters was studied depending on the application options. The calculation results for open and closed magnetic systems, as well as the values of the magnetic field induction outside the magnet, are presented. The corresponding analyses and conclusions are made which can be useful for manufacturers and users of permanent magnets.
On the History of Geometrization of Space-time: From Minkowski to Finsler Geometry
Creators: name: Goenner, Hubert F M
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: The article is a tribute to Hermann Minkowski leading from his geometry of numbers to an attempt at using Finsler geometry for a break of Lorentz invariance.
description: 20 pages and a glossary (3pp)
Does Soil and Water Conservative Practices Influence Crop Productivity and Household Welfare? Evidence from Rural Nigeria
Creators: name: Ogunniyi, Adebayo
name: Olagunju, Kehinde Oluseyi
name: Omotayo, Olusola
name: Awotide, Bola Amoke
name: Oyeyemi, Motunrayo
name: Mavrotas, George
name: Ogunniyi, Adebayo
name: Olagunju, Kehinde Oluseyi
name: Omotayo, Olusola
name: Awotide, Bola Amoke
name: Oyeyemi, Motunrayo
name: Mavrotas, George
Publisher: name: Unknown
Year: 2021
Subjects: Productivity Analysis
Environmental Economics and Policy

description: Paper# 19483
Teachers' work in a time of major curriculum change
Creators: name: Garsed, Jeffrey R
Publisher: name: University Of Tasmania
Year: 2023

description: This study examined teachers' perceptions of their work in the context of a major curriculum change initiative in Tasmania, Australia. The thesis was undertaken to present a report that would provide rich data, particularly from the Tasmanian government school context, of teachers' perspectives on their work in this curriculum change context. The major focus of this thesis was on teachers' views of the nature and challenges involved in their work during implementation, at a system-wide level, of a major curriculum change initiative. Accordingly, the researcher aimed to add substantial detailed material to the extant and emerging literature in this field. The literature underpinning the study was typically broad, yet a comprehensive search revealed few similar Australian studies, and no Tasmanian studies, which provided the depth of description of teachers' work in the current change context which is presented in this thesis. The data were gathered from 48 teacher and two principal participants from two schools on multiple occasions mainly over the course of one school year. Initial observation in schools was followed by one-on-one interviews, the completion of demographic surveys by each interview participant and two days spent shadowing the two principals by the researcher. Key change leaders were identified and follow-up interviews were conducted up to one year later. As data were analysed, key categories emerged in the light of relevant areas of the extant literature. The key categories were divided into three themes which addressed the study's two Research Questions: 1. How do teachers and principals in two rural Tasmanian schools perceive their work lives in the context of a major curricular and pedagogical change? 2. What issues arise for teachers and principals in two rural Tasmanian schools in the context of a major curricular and pedagogical change? The first theme concerned teachers' views of the curriculum change initiative and the second theme was about teachers' self-identities during a time of major curriculum reform. This second theme included: (a) the purposes of teachers' work; (b) teacher professional involvement and commitment; (c) teachers' responses to mandated change; and (d) the emotional aspects of teachers' work and identities. The third theme concerned the influence of the local school culture and leadership in enabling and sustaining educational change.
Place Attachment and Willingness to Pay for Tackling Air Pollution Among Migrant Workers
Creators: name: Liu, Zhongyuan
name: Florkowski, Wojciech J.
name: Chen, Huiguang
name: Liu, Zhongyuan
name: Florkowski, Wojciech J.
name: Chen, Huiguang
Publisher: name: Unknown
Year: 2021
Subjects: Labor and Human Capital
Environmental Economics and Policy

description: Paper# 19512
Ladder Operators and Endomorphisms in Combinatorial Physics
Creators: name: Duchamp, Gérard Henry Edmond
name: Poinsot, Laurent
name: Solomon, Allan I.
name: Penson, Karol A.
name: Blasiak, Pawel
name: Horzela, Andrzej
Publisher: name: arXiv
Year: 2009
Subjects: subject: Combinatorics (math.CO)
subject: Symbolic Computation (cs.SC)
subject: Quantum Physics (quant-ph)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: 05E99, 03.65.Fd

description: Starting with the Heisenberg-Weyl algebra, fundamental to quantum physics, we first show how the ordering of the non-commuting operators intrinsic to that algebra gives rise to generalizations of the classical Stirling Numbers of Combinatorics. These may be expressed in terms of infinite, but {\em row-finite}, matrices, which may also be considered as endomorphisms of $\C[[x]]$. This leads us to consider endomorphisms in more general spaces, and these in turn may be expressed in terms of generalizations of the ladder-operators familiar in physics.
Visualization of nodes, antinodes and lateral displacements in vibrating plates
Creators: name: Niven, Robert D.
Publisher: name: University of British Columbia
Year: 2011

description: The use of optical techniques for the study of vibrating surfaces has thus far been limited to measuring small amplitudes on the order of a few hundred microinches. To extend the measuring range to much larger amplitudes a completely new technique is sought. In this thesis optical vibration methods are presented that allow amplitudes of .001" and up to be investigated, the upper limit being determined solely by the prohibitive size and cost of the equipment. The study is based on a combination of the shadow moire deflection measuring method and the Salet-Ikeda slope measuring method which, as far as the author knows, have been applied only to the study of static situations. It is shown how these two methods may be applied to the dynamic case to permit the direct visualization of nodal and antinodal locations and displacements in vibrating plates. Three specimens are studied: a cantilever beam, a square cantilever plate and a circular free plate. Complete photographic results along with theoretical or experimental solutions are given for each specimen.
The long-range interactions between branes in diverse dimensions
Creators: name: Wu, Rong-Jun
name: Wang, Zhao-Long
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We calculate the long-range interactions between two simple branes placed parallel at a separation in diverse dimensions via an effective field theory approach. We also compute for the first time the explicit long-range interaction between two D-branes with each carrying a world-volume non-abelian magnetic flux in three special cases, respectively. In particular, we demonstrate that the half-string creation between a D$_0$-brane and a D$_8$-brane continues to hold even in the present context, therefore lending further support to the previous assertion of this. Our computations re-raise also the issue in one case on whether so constructed (D$_0$, D$_8$) bound state is actually a marginal one.
description: 28 pages, various discussions expanded and references added
Collective Dynamics of Bose--Einstein Condensates in Optical Cavities
Creators: name: Keeling, J.
name: Bhaseen, M. J.
name: Simons, B. D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Recent experiments on Bose--Einstein condensates in optical cavities have reported a quantum phase transition to a coherent state of the matter-light system -- superradiance. The time dependent nature of these experiments demands consideration of collective dynamics. Here we establish a rich phase diagram, accessible by quench experiments, with distinct regimes of dynamics separated by non-equilibrium phase transitions. We include the key effects of cavity leakage and the back-reaction of the cavity field on the condensate. Proximity to some of these phase boundaries results in critical slowing down of the decay of many-body oscillations. Notably, this slow decay can be assisted by large cavity losses. Predictions include the frequency of collective oscillations, a variety of multi-phase co-existence regions, and persistent optomechanical oscillations described by a damped driven pendulum. These findings open new directions to study collective dynamics and non-equilibrium phase transitions in matter-light systems.
description: 5 pages, 5 figures