cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
CleanSky2 SOLIFLY - Developing structural batteries towards aeronautic application
Creators: name: Kühnelt, Helmut
name: Beutl, Alexander
name: Laurin, Frédéric
name: Bismarck, Alexander
name: Willrodt, Sebastian
name: Guida, Michele
name: Romano, Fulvio
Publisher: name: Zenodo
Year: 2021
Subjects: multifunctional structures
structural batteries
hybrid electric aircraft propulsion
semi-solid-state Li-ion battery

description: Radical innovations for all aircraft systems and subsystems are needed for realizing future carbon neutral aircraft, with Hybrid Electric Aircraft (HEA) to be delivered after 2035, at first in the regional aircraft segment. Electrical energy storage is one key element here, demanding safe, energy dense, lightweight technologies. Combining load bearing with energy storage capabilities is a promising way to minimise the detrimental impact of battery weight on the aircraft. However, despite the various concepts developed in recent years, the viability of this solution has been demonstrated at material or coupon level only, leaving many open questions concerning its effective applicability for structural elements of a size relevant to the effective implementation into the airframe.

Within the CleanSky2 project SOLIFLY “Semi-SOlid-state LI-ion Batteries FunctionalLY Integrated in Composite Structures for Next Generation Hybrid Electric Airliners” (2021-2023) the AIT Austrian Institute of Technology, the aeronautics research centers ONERA and CIRA, the Universities of Vienna and Naples, and the SME CUSTOMCELLS Itzehoe, will be conducting research to develop further structural batteries towards aeronautic applications.

Based on a non-conventional semi-solid-state formulation suitable for Li-ion structural batteries, two different scalable battery cell concepts are to be developed further and combined: on the one hand, so-called Coated Carbon Fibres (CCF/carbon fibres coated with active material), which intrinsically store energy, and, on the other hand, thin battery cells that are installed into the carbon composite structure (Reinforced Multilayer Stack/RMS). Functional integration of the formulation will be optimized, first at the cell level and subsequently scaling up the cell concepts, on a representative aerospace-grade component, here a stiffened panel, to demonstrate the electrochemical and mechanical properties of the developed structural battery technology.

A further aspect that SOLIFLY focuses on is to closely link technological development to the actual needs of the aviation industry. To ensure this, the expectations and specifications of the aircraft manufacturers are incorporated into the design process from the very beginning, taking into account airworthiness and production requirements. A technology roadmap and a technology readiness level scale-up strategy are project outcomes which ensure that the inherently scalable processes can actually be industrialized.

The talk will present the concept of SOLIFLY, the progress achieved in the first phase of the project including the outcome of a first industrial workshop.
Fractional Order Controller for Quadcopter Subjected to Ground Effect
Creators: name: Mirghasemi, Seyed Alireza
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2019
Subjects: Fractional Controller
Quadcopter

description: Although the concept of fractional calculus was known for centuries, it was not considered in engineering due to the lack of implementation tools and acceptable performance of integer order models and control. However, recently, engineers and researchers started to investigate the potentially high performance of fractional calculus in various fields among which are acoustics, conservation of mass, diffusion equation and specifically in this thesis control theory. The intention of this thesis is to analyze the relative performance of fractional versus integer order PID controller for a quadcopter. Initially, the dynamics of the quadcopter is presented with additional consideration of the ground effect and torque saturation. Then, are introduced the concept of fractional calculus and the mathematical tools to be used for modeling fractional order controller. Finally, the performance of the fractional order controller is evaluated by comparing it to an integer order controller.
O EMPREGO DO JOINT TERMINAL ATTACK CONTROLLER (JTAC) EM OPERAÇÕES DE TROPAS ESPECIAIS. ESTUDO DE CASO: TROPAS COMANDO NA REPÚBLICA CENTRO AFRICANA (RCA)
Creators: name: João F. P. Rocha, David Pascoal Rosado
Publisher: name: PROELIUM
Year: 2025

description: O presente artigo científico, aborda a crescente necessidade da realização de operações conjuntas no atual campo de batalha, destacando assim, a importância da integração entre forças terrestres e aéreas. O Joint Terminal Attack Controller (JTAC) desempenha um papel fundamental na coordenação e integração do apoio aéreo com as manobras terrestres.


Assim, e de forma a delimitar um pouco a abrangência desta temática, visto que o JTAC consegue ser empregue e adaptar-se a qualquer tipo de força, prestando o apoio necessário independentemente do tipo de operação terrestre, o objetivo desta investigação foi o de compreender o emprego do JTAC nas diversas operações levadas a cabo pelas tropas Comando no TO da RCA e como este pode levar ao sucesso das mesmas. Utilizou-se uma metodologia indutiva, recorrendo a uma análise documental e a entrevistas semiestruturadas.


Os resultados indicam que os métodos e meios usados pelos JTAC são apropriados e bem referenciados pelos comandantes, sendo essenciais para o sucesso das operações. No entanto, existem também limitações relacionadas com a disponibilidade e restrições dos meios aéreos da MINUSCA.
description: PROELIUM, Vol. 8 N.º 15 (2025): Revista Proelium, VIII, 15
Wanzenfunde (Insecta: Heteroptera) der 47. Tagung der "Arbeitsgemeinschaft Mitteleuropäischer Heteropterologen" in Südtirol (Italien) (27.–29.8.2021)
Creators: name: Hilpold, Andreas
name: Brandner, Johann
name: Dorow, Wolfgang
name: Faraci, Franco
name: Gossner, Martin M.
name: Hartung, Viktor
name: Heckmann, Ralf
name: Münch, Michael
name: Nawratil, Josef
name: Rabitsch, Wolfgang
name: Raupach, Michael
name: Simon, Helga
name: Kranebitter, Petra
Publisher: name: Zenodo
Year: 2023

description: Heteroptera records collected on the occasion of the 47th meeting of the "Working Group of Central European Heteropterologists" in the province of Bolzano/Bozen, South Tyrol, Italy, are reported. Within the three official field days a total of 242 species were observed. Including the findings of the individual excursions of single participants a total number of 266 species were documented. The excursion of the first day led to the Fennberger See (110 species), day two led to the Dolomites next to Karerpass/Passo di Carezza (63 species) and the third excursion day focussed on the steppe-like areas of the Vinschger Sonnenberg (131 species). Among the total findings, one species is new to Italy (Phytocoris nowickyi) and another 16 species are new to South Tyrol (Amphiareus obscuriceps, Aradus truncatus, Closterotomus norwegicus, Elatophilus stigmatellus, Eurydema rotundicollis, Halticuspusillus, Megalonotus antennatus, Metacanthus meridionalis, Orthotylus caprai, Phytocoris meridionalis, Phytocorisobliquus, Pinalitus cervinus, Polymerus brevicornis, Polymerus microphthalmus, Stygnocoris similis, Veliacaprai). The true bug fauna of South Tyrol must still be regarded as insufficiently known and further rare and endangered species that are interesting biogeographically and faunistically are to be expected.
On the solutions of Knizhnik-Zamolodchikov system
Creators: name: Sakhnovich, Lev
Publisher: name: arXiv
Year: 2008
Subjects: subject: Analysis of PDEs (math.AP)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 34M05, 34M55, 47B38

description: We consider the Knizhnik-Zamolodchikov system of linear differential equations. The coefficients of this system are rational functions. We prove that under some conditions the solution of KZ system is rational too. We give the method of constructing the corresponding rational solution. We deduce the asymptotic formulas for the solution of KZ system when $ρ$ is integer.
Bootstrapping time correlation functions of molecular dynamics
Creators: name: N., Desbiens
name: P., Arnault
name: W., Weens
name: G., Perrin
name: V, Dubois
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Molecular dynamics is often considered as a numerical experiment. The error bars on the results are therefore mandatory, but sometimes difficult to determine and computationally demanding. As a low-cost approach, we describe the application of the bootstrap (BS) method to the quantification of uncertainties pertaining to the time correlation functions. We chose the autocorrelation functions of velocity and interdiffusion current for a binary ionic mixture as a test bed, and we assessed the merit of the Darken approximation relating both of them. The intrinsic errors related to phase space sampling is investigated comparing the BS method with the reference method of replica. We also study how the BS method can assist in addressing the finite size effects.
Leuconidae Sars 1878
Creators: name: Brito, Ayrton Do Ramo
name: Serejo, Cristiana Silveira
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Cumacea
Leuconidae

description: Genera of Leuconidae
Among the Cumacea with pleotelson, Leuconidae present the truncated mandible with wide molar process, described as a diagnostic character since its original description (Sars 1878; 1879) and still used in the present day to characterize the group in combination with other leuconid characters (Heard et al. 2007). Within the pleotelson clade, the genus Campylaspis (Nannastacidae) also is characterized by a truncate mandible (but with styliform molar process), in combination with nannastacid characters (Heard et al. 2007).
Watling (1991) proposedawide reviewof thefamilygivinggenera diagnoses, descriptionsoffivenewgeneraand division of the genus Leucon into five subgenera. Watling and Gerken (2023) have been compiling data on Cumacea systematic available in the World Register of Marine Species (WoRMS). However, there are some disagreements regarding the literature and the WoRMS database of Leuconidae genera that will be elucidated below.
The World Register of Marine Species presents 20 Leuconidae genera, however there are inconsistencies based on the literature. Within WoRMS, Epileucon Jones, 1956 appears both as a genus and subgenus of Leucon. Băcescu (1988) considered Epileucon as a subgenus of Leucon, a classification accepted by Watling’s (1991) revision. The monotypic genus Americuma it is not valid, as Americuma heardi Băcescu, 1979 was transferred to the genus Styloptocuma (Nannastacidae) (Petrescu 1999). Haye’s (2004) revision of the Bodotriidae transferred Coricuma to the Bodotriidae (Table 2).
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Pseudeudorella was described by Mühlenhardt-Siegel (2008) based on Eudorella redacticruris Watling and McCann, 1997, due to the absence of pereopod 5 in both sexes and the presence of penial lobes in males. Pseudeudorella is not mentioned in WoRMS, and there is no literature that considers it as a junior synonym of Eudorella. As a conclusion, we consider Pseudeudorella as a valid genus, despite Watling and McCann (1997) stating that both characters (Pereopod 5 absent and penial lobes in males) were not relevant to erect a new genus.
From this literature review and including Gyneleucon gen. nov., it is concluded that Leuconidae has 19 valid genera (Table 2).
description: Published as part of Brito, Ayrton Do Ramo & Serejo, Cristiana Silveira, 2023, Leuconidae Sars, 1878 (Crustacea: Cumacea) from the southwestern Atlantic, filling the distribution gap along the Brazilian coast, pp. 101-134 in Zootaxa 5383 (2) on pages 130-131, DOI: 10.11646/zootaxa.5383.2.1, http://zenodo.org/record/10350586
Study of a PANDA Barrel DIRC design based on radiator plates
Creators: name: Dzhygadlo, R.
name: Götzen, K.
name: Kalicy, G.
name: Kumawat, H.
name: Patsyuk, M.
name: Peters, K.
name: Schwarz, C.
name: Schwiening, J.
name: Zühlsdorf, M.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2014
Subjects: Physics

description: GSI Scientific Report 2013 - GSI Report 2014-1
Prionoceratoidea Hyatt 1884
Creators: name: Korn, Dieter
name: Weyer, Dieter
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Goniatitida

description: Superfamily Prionoceratoidea Hyatt, 1884
[nom. transl. Bogoslovsky (1971: 94), pro Prionocerae Hyatt, 1884; nom. correct. Kullmann (2009: 2), pro Prionocerataceae]
Diagnosis
Superfamily of the suborder Tornoceratina with discoidal to globular, primarily involute conchs without coarse ornament. Many modifications of the conch shape during ontogeny and phylogeny; advanced forms may possess a wide umbilicus and may bear a coarse ornament. Basic suture line with the elements E A L I, development of supplementary external, adventive, lateral and umbilical lobes occur in various lineages. Ornament primarily with growth lines only; ribs are developed in some lineages. Growth lines have a convex course in the early forms, but there are trends toward biconvex growth lines in many lineages (after Korn & Klug 2002).
Included families
Prionoceratidae Hyatt, 1884; Cheiloceratidae Frech, 1897; Sporadoceratidae Miller & Furnish, 1957; Praeglyphioceratidae Ruzhencev, 1957; Maximitidae Ruzhencev, 1960; Gattendorfiidae Bartzsch & Weyer, 1987.
description: Published as part of Korn, Dieter & Weyer, Dieter, 2023, The ammonoids from the Gattendorfia Limestone of Oberrödinghausen (Early Carboniferous; Rhenish Mountains, Germany), pp. 1-230 in European Journal of Taxonomy 882 on page 17, DOI: 10.5852/ejt.2023.882.2177, http://zenodo.org/record/8177581
Prionoceratidae Hyatt 1884
Creators: name: Korn, Dieter
name: Weyer, Dieter
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Cephalopoda
Goniatitida
Prionoceratidae

description: Family Prionoceratidae Hyatt, 1884
[nom. correct. Bogoslovsky (1971: 180), pro Prionocerae Hyatt, 1884]
Diagnosis
Family of the superfamily Prionoceratoidea with the sutural formula E A L U I or (E 1 E m E 1) A L U I in some advanced forms; adventive lobe deep, V-shaped or lanceolate and pointed, only rarely blunt; the lateral lobe has a position on the umbilical seam. Conch in the juvenile stage usually subinvolute, in some lineages subevolute or evolute; adult stage usually involute, but subinvolute in some genera. Shell ornament with fine to coarse growth lines, mostly without ribs.
Included subfamilies
Prionoceratinae Hyatt, 1884; Imitoceratinae Ruzhencev, 1950; Karagandoceratinae Librovitch, 1957; Voehringeritinae Bartzsch & Weyer, 1988; Acutimitoceratinae Korn, 1994; Balviinae Korn in Korn & Klug, 2002.
description: Published as part of Korn, Dieter & Weyer, Dieter, 2023, The ammonoids from the Gattendorfia Limestone of Oberrödinghausen (Early Carboniferous; Rhenish Mountains, Germany), pp. 1-230 in European Journal of Taxonomy 882 on pages 17-18, DOI: 10.5852/ejt.2023.882.2177, http://zenodo.org/record/8177581
O SISTEMA DE CUSTEIO ABC E SUA ARTICULAÇÃO AO PLANO DE ATIVIDADES: UM INSTRUMENTO DE GESTÃO E MELHORIA DO DESEMPENHO DO EXÉRCITO PORTUGUÊS
Creators: name: Almeida, Anacleto
Publisher: name: PROELIUM
Year: 2025

description: A presente investigação teve como objetivo perceber a importância e influência da contabilidade de gestão, através da implementação do sistema de apuramento de custos Activity Based Costing (ABC) na elaboração do Plano de atividades e na melhoria do desempenho do Exército português.


Para atingir este objetivo foi utilizado uma metodologia mista, do tipo de estudo de caso e que para a técnica de dados foram recorridos a inquéritos por questionário e entrevistas confirmatórias. O intuito do inquérito por questionário foi perceber a satisfação de militares de desempenham funções ligadas à gestão de recursos, acerca da implementação da contabilidade de gestão, também obter o ponto de vista dos inquiridos acerca da importância da contabilidade de gestão e do sistema de gestão baseado em atividades. Após a recolha de dados de carácter quantitativo foi feita a recolha de dados qualitativos por meio de inquérito por entrevistas.


Após a recolha de dados recorreu-se ao software IBM SPSS 29 para fazer análise dos resultados obtidos no inquérito por questionário. Na análise dos dados quantitativos foi apurado as estatísticas descritivas e foi deita a correlação entre variáveis. Para confirmar os resultados obtidos no inquérito por questionário foram elaboradas entrevistas confirmatórias. O tratamento de dados qualitativos foi feito através do software NVivo, fazendo a codificação através de categorias e subcategorias.


Tendo em conta os resultados apurados nesta investigação verificou-se que a Contabilidade de Gestão (CG), através da implementação do sistema de custeio baseado em atividades, permite um melhor desempenho da organização, na medida em que este sistema possibilita ter uma visão ampla em diversas dimensões, a nível de recursos, custos e atividades, facilitando assim o decisor na tomada de decisão, contribuindo para a melhoria do desempenho organizacional.
description: PROELIUM, Vol. 8 N.º 15 (2025): Revista Proelium, VIII, 15
Mechanical energy variations in rowing
Creators: name: Martindale, Walter Olsen
Publisher: name: University of British Columbia
Year: 2010

description: The purpose of this study was to quantify and contrast the instantaneous segmental and total body energy patterns of rowing a single sculls racing shell with rowing a Gjessing (Norway) rowing ergometer, and to contrast energy savings through exchanges of mechanical energy among segments and conversions of energy within segments. Four scullers, two male and two female, were filmed at three stroke rates while rowing on a Gjessing rowing ergometer (RE), the RE mounted on a wheeled cart, and rowing in single sculls racing shells. Digitized coordinates of joint markers were combined with estimated body segment inertial parameters, and evaluated with link-segment methods after digital filtering to remove digitization noise. Mechanical energy and internal work analysis allowed calculation of energy savings due to exchange and interconversion of segmental energy. The internal work was least in the wheeled RE and greatest in the boat. Saving of energy through exchange was greatest in the boat, and least in the stationary RE. Saving of energy through interconversion was greatest in the wheeled RE. The interconversions (expressed as a percentage of total work) were lower, and quite similar for both the boat and the stationary RE. Similarity of energy saving scores between the boat and the wheeled RE allow the conclusion that rowing ergometer testing might permit athletes to work at stroke rates more similar to racing levels.
Gauge-Higgs Unification and Radiative Electroweak Symmetry Breaking in Warped Extra Dimensions
Creators: name: Medina, Anibal D.
name: Shah, Nausheen R.
name: Wagner, Carlos E. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute the Coleman Weinberg effective potential for the Higgs field in RS Gauge-Higgs unification scenarios based on a bulk SO(5) x U(1)_X gauge symmetry, with gauge and fermion fields propagating in the bulk and a custodial symmetry protecting the generation of large corrections to the T parameter and the coupling of the Z to the bottom quark. We demonstrate that electroweak symmetry breaking may be realized, with proper generation of the top and bottom quark masses for the same region of bulk mass parameters that lead to good agreement with precision electroweak data in the presence of a light Higgs. We compute the Higgs mass and demonstrate that for the range of parameters for which the Higgs boson has Standard Model-like properties, the Higgs mass is naturally in a range that varies between values close to the LEP experimental limit and about 160 GeV. This mass range may be probed at the Tevatron and at the LHC. We analyze the KK spectrum and briefly discuss the phenomenology of the light resonances arising in our model.
description: 31 pages, 9 figures. Corrected typo in boundary condition for gauge bosons and top mass equation. To appear in PRD
Neue und bemerkenswerte Moosfunde für Südtirol (Provinz Bozen, Italien). III.
Creators: name: Mair, Petra
name: Faltner, Felix
name: Tratter, Wilhelm
name: Zemmer, Franziska
Publisher: name: Zenodo
Year: 2023

description: New and remarkable bryophyte records in South Tyrol (Province of Bozen/Bolzano, Italy. III).
Zygodon gracilis is new for the region of Trentino-Alto Adige/Südtirol, Riccia fluitans and Splachnum ampullaceum were re-found after more than 100 years. Moreover we report the first reliable record of Odontoschisma sphagni as well as new records of Sauteria alpina and Oreas martiana for South Tyrol. The number of currently known bryophyte taxa from South Tyrol (Province of Bozen/Bolzano) is 933.
КЛЮЧЕВЫЕ ПРОБЛЕМЫ ОГНЕВОЙ ПОДГОТОВКИ В ПОВСЕДНЕВНОЙ ДЕЯТЕЛЬНОСТИ СОТРУДНИКА ОВД
Creators: name: Гвоздев Алексей Константинович
name: Казанцев Илья Андреевич
name: Прозоров Антон Александрович
Publisher: name: Эпоха науки
Year: 2020
Subjects: огневая подготовка
оружие
сотрудник
полиция

description: Огневая подготовленность сотрудников ОВД в процессе профессионального роста и увеличения опыта должна соответственно улучшаться, а знания и умения совершенствоваться в стойкие навыки владения оружием и техникой стрельбы. В большинстве случаев это так и происходит, но существуют проблемы, которые замедляют этот процесс, требуя значительных затрат. Необходимо рассмотреть данные проблемы в данной статье.
Folding model study of the isobaric analog excitation: isovector density dependence, Lane potential and nuclear symmetry energy
Creators: name: Khoa, Dao T.
name: Than, Hoang Sy
name: Cuong, Do Cong
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: A consistent folding model analysis of the ($ΔS=0, ΔT=1$) charge exchange \pn reaction measured with $^{48}$Ca, $^{90}$Zr, $^{120}$Sn and $^{208}$Pb targets at the proton energies of 35 and 45 MeV is done within a two-channel coupling formalism. The nuclear ground state densities given by the Hartree-Fock-Bogoljubov formalism and the density dependent CDM3Y6 interaction were used as inputs for the folding calculation of the nucleon optical potential and \pn form factor. To have an accurate isospin dependence of the interaction, a complex isovector density dependence of the CDM3Y6 interaction has been carefully calibrated against the microscopic Brueckner-Hatree-Fock calculation by Jeukenne, Lejeune and Mahaux before being used as folding input. Since the isovector coupling was used to explicitly link the isovector part of the nucleon optical potential to the cross section of \pn reaction exciting the 0$^+$ isobaric analog states in $^{48}$Sc, $^{90}$Nb, $^{120}$Sb and $^{208}$Bi, the newly parameterized isovector density dependence could be well tested in the folding model analysis of the \pn reaction. The isospin- and density dependent CDM3Y6 interaction was further used in the Hartree-Fock calculation of asymmetric nuclear matter, and a realistic estimation of the nuclear symmetry energy has been made.
description: Accepted for publication in Phys. Rev. C
Generalized Uncertainty Principle: from the harmonic oscillator to a QFT toy model
Creators: name: Bosso, Pasquale
name: Luciano, Giuseppe Gaetano
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Several models of quantum gravity predict the emergence of a minimal length at Planck scale. This is commonly taken into consideration by modifying the Heisenberg Uncertainty Principle into the Generalized Uncertainty Principle. In this work, we study the implications of a polynomial Generalized Uncertainty Principle on the harmonic oscillator. We revisit both the analytic and algebraic methods, deriving the exact form of the generalized Heisenberg algebra in terms of the new position and momentum operators. We show that the energy spectrum and eigenfunctions are affected in a non-trivial way. Furthermore, a new set of ladder operators is derived which factorize the Hamiltonian exactly. The above formalism is finally exploited to construct a quantum field theoretic toy model based on the Generalized Uncertainty Principle.
description: 23 pages, 1 figure, 2 appendices
A mean ergodic theorem for actions of amenable quantum groups
Creators: name: Duvenhage, Rocco
Publisher: name: arXiv
Year: 2007
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 46L55; 37A30

description: We prove a weak form of the mean ergodic theorem for actions of amenable locally compact quantum groups in the von Neumann algebra setting.
description: 9 pages
Klein paradox for bosons, wave packets and negative tunnelling times
Creators: name: de la Cal, X. Gutiérrez
name: Alkhateeb, M.
name: Pons, M.
name: Matzkin, A.
name: Sokolovski, D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyse a little known aspect of the Klein paradox. A Klein-Gordon boson appears to be able to cross a supercritical rectangular barrier without being reflected, while spending there a negative amount of time. The transmission mechanism is demonstrably acausal, yet an attempt to construct the corresponding causal solution of the Klein-Gordon equation fails. We relate the causal solution to a divergent multiple-reflections series, and show that the problem is remedied for a smooth barrier, where pair production at the energy equal to a half of the barrier's height is enhanced yet remains finite.
Development and characterization of a large area silicon pad array for an electromagnetic calorimeter
Creators: name: Mukhopadhyay, Sourav
name: Chandratre, Vinay B.
name: Muhuri, Sanjib
name: Singaraju, Rama N.
name: Saini, Jogender
name: Nayak, Tapan K
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We present the research and development work of the first version of a 6*6 array of silicon pad detectors, carried out in India, for the proposed forward calorimeter (FOCAL) as part of the ALICE collaboration upgrade program at CERN. The primary motivation is to develop a large area silicon pad array realizing the challenging requirements of high-energy physics experiments such as low leakage current, high breakdown voltage and evaluate its performance as an active layer in the prototype silicon tungsten (Si-W) electromagnetic (EM) calorimeter. Towards these goals, a 36-pad silicon sensor with an individual pad size of 1 cm2 is designed on a 4-inch high resistivity N-type wafer and fabricated at Bharat Electronics Limited, Bangalore. The sensors have been used to assemble the prototype Si-W calorimeters and were successfully tested with high-energy particle beams. The design and development of the large area silicon sensor and its characterization using radioactive sources in the laboratory and high-energy particle beams are reported in this paper.
description: 11 figures
The relationship between anaerobic threshold, excess CO² and blood lactate in elite marathon runners
Creators: name: Hearst, William Edward
Publisher: name: University of British Columbia
Year: 2010

description: The purpose of this study was to investigate the use of excess CO₂ (ExCO₂) as a determinant of the anaerobic threshold (AT) and the subsequent relationship to blood lactate (La). Four highly trained marathon runners (x values, age=30.6 years; % body fat= 8.2; VO₂max = 6 8 ml-kg⁻¹min⁻¹) volunteered to participate in this study. Metabolic and respiratory exchange variables were assessed by an open circuit method utilizing a Beckman metabolic measurement cart interfaced on-line with a Hewlitt Packard 3052A data acquisition system. VO₂max and the treadmill velocity at the threshold of anaerobic metabolism (V[sub=tam]) were obtained from a progressive, treadmill run (.81 kph. > min.) until volitional fatigue. V[sub=tam] (Kilometers per hour, Kph) was calculated from the point of .a non-linear increase in ExCO₂. Subjects performed set treadmill runs of 10 minutes on alternate days. Variations (latin square) included runs at V[sub=tam], V[sub=tam+1], [sub=tam+2], and [sub=tam-1]. Analysis of variance with preplanned orthogonal comparisons and Scheffe post hoc contrasts were used to determine the effects of the treadmill variations on La and ExCO₂. There was no significance found between V[sub=tam] and V[sub=tam-1] for La or ExCO₂. Significance (p < .05) was evident with V[sub=tam]< [sub=tam+1, V[sub=tam]< [sub=tam+2] for La and V[sub=tam]< [sub=tam+2] for ExCO₂. An overall correlation of .89 (p <. 005) demonstrated a high positive relationship between ExCO₂ and La. Findings indicate V[sub=tam] to be a critical point in determining the anaerobic threshold in marathoners, and performance above this demarcation results in a state of anaerobiosis.
A study of the electromagnetic fluctuation induced forces on thin metallic films
Creators: name: Benassi, Andrea
name: Calandra, Carlo
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Using the plasma model for the metal dielectric function we have calculated the electromagnetic fluctuation induced forces on a free standing metallic film in vacuum as a function of the film size and the plasma frequency. The force for unit area is attractive and for a given film thickness it shows an intensity maximum at a specific plasma value, which cannot be predicted on the basis of a non retarded description of the electromagnetic interaction. If the film is deposited on a substrate or interacts with a plate, both the sign and the value of the force are modified. It is shown that the force can change sign from attraction to repulsion upon changing the substrate plasma frequency. A detailed comparison between the force on the film boundaries and the force between film and substrate indicates that, for 50-100 nm thick films, they are comparable when film-substrate distance is of the order of the film thickness.
Forecasting neutrino masses from combining KATRIN and the CMB: Frequentist and Bayesian analyses
Creators: name: Host, Ole
name: Lahav, Ofer
name: Abdalla, Filipe B.
name: Eitel, Klaus
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a showcase for deriving bounds on the neutrino masses from laboratory experiments and cosmological observations. We compare the frequentist and Bayesian bounds on the effective electron neutrino mass m_beta which the KATRIN neutrino mass experiment is expected to obtain, using both an analytical likelihood function and Monte Carlo simulations of KATRIN. Assuming a uniform prior in m_beta, we find that a null result yields an upper bound of about 0.17 eV at 90% confidence in the Bayesian analysis, to be compared with the frequentist KATRIN reference value of 0.20 eV. This is a significant difference when judged relative to the systematic and statistical uncertainties of the experiment. On the other hand, an input m_beta=0.35 eV, which is the KATRIN 5sigma detection threshold, would be detected at virtually the same level. Finally, we combine the simulated KATRIN results with cosmological data in the form of present (post-WMAP) and future (simulated Planck) observations. If an input of m_beta=0.2 eV is assumed in our simulations, KATRIN alone excludes a zero neutrino mass at 2.2sigma. Adding Planck data increases the probability of detection to a median 2.7sigma. The analysis highlights the importance of combining cosmological and laboratory data on an equal footing.
description: 8 pages, 7 figures, uses Revtex. Submitted to PRD
Host Galaxies Catalog Used in LIGO Searches for Compact Binary Coalescence Events
Creators: name: Kopparapu, Ravi Kumar
name: Hanna, Chad R.
name: Kalogera, Vicky
name: O'Shaughnessy, Richard
name: Gonzalez, Gabriela
name: Brady, Patrick R.
name: Fairhurst, Stephen
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: An up-to-date catalog of nearby galaxies considered as hosts of binary compact objects is provided with complete information about sky position, distance, extinction-corrected blue luminosity and error estimates. With our current understanding of binary evolution, rates of formation and coalescence for binary compact objects scale with massive-star formation and hence the (extinction-corrected) blue luminosity of host galaxies. Coalescence events in binary compact objects are among the most promising gravitational-wave sources for ground-based gravitational-wave detectors such as LIGO. Our catalog and associated error estimates are important for the interpretation of analyses, carried out for LIGO, to constrain the rates of compact binary coalescence, given an astrophysical population model for the sources considered. We discuss how the notion of effective distance, created to account for the antenna pattern of a gravitational-wave detector, must be used in conjunction with our catalog. We note that the catalog provided can be used on other astronomical analysis of populations that scale with galaxy blue luminosity.
description: 29 pages, 7 figures, Accepted to Astrophysical Journal. To appear in March 20 2008 Astrophysical Journal
Subwavelength internal imaging by means of the wire medium
Creators: name: Zhao, Yan
name: Belov, Pavel A.
name: Hao, Yang
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Evanescent wave amplification is observed, for the first time to our knowledge, inside a half-wavelength-thick wire medium slab used for subwavelength imaging. The wire medium is analyzed using both a spatially dispersive finite-difference time-domain (FDTD) method and a full-wave commercial electromagnetic simulator CST Microwave Studio. In this work we demonstrate that subwavelength details of a source placed at a distance of one-tenth of a wavelength from a wire medium slab can be detected inside the slab with a resolution of approximately one-tenth of a wavelength in spite of the fact that they cannot be resolved at the front interface of the device, due to the rapid decay of evanescent spatial harmonics in free space.
Timelike Boundary Sine-Gordon Theory and Two-Component Plasma
Creators: name: Jokela, Niko
name: Keski-Vakkuri, Esko
name: Majumder, Jaydeep
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: It has long been known that there is a relation between boundary sine-Gordon theory and thermodynamics of charge neutral two-component Coulomb plasma on a unit circle. On the other hand, recently it was found that open string worldsheet description of brane decay can be related to a sequence of points of thermodynamic equilibrium of one-component plasma. Here we consider a different decay process which is specifically described by the timelike boundary sine-Gordon theory. We find time evolution to be mapped to a one-dimensional curve in the space of points of thermal equilibrium of a non-neutral two-component Coulomb plasma. We compute the free energy of the system and find that along the curve it is monotonously decreasing, defining a thermodynamic arrow of time.
description: 11 pages, v2: reference added
Long-range Electron Spin-spin Interactions from Unparticle Exchange
Creators: name: Liao, Yi
name: Liu, Ji-Yuan
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Unparticles as suggested by Georgi are identities that are not constrained by dispersion relations but are governed by their scaling dimension, d. Their coupling to particles can result in macroscopic interactions between matter, that are generally an inverse nonintegral power of distance. This is totally different from known macroscopic forces. We use the precisely measured long-ranged spin-spin interaction of electrons to constrain unparticle couplings to the electron. For 1
description: v1: 10 pages, no figure, 1 table; v2: Proofread version for PRL. Main changes: (1) Shortened considerably to meet the length limit by cutting some calculational details. (2) Introduction paragraphs hopefully improved. (3) Minor rewording in the text and title. There are no changes to numerical results and conclusions
Low-energy radiative-capture reactions within two-cluster coupled-channel description
Creators: name: Canton, L.
name: Levchuk, L. G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The formalism that describes radiative-capture reactions at low energies within an extended two-cluster potential model is presented. Construction of the operator of single-photon emission is based on a generalisation of the Siegert theorem with which the amplitude of the electromagnetic process is constructed in an explicitly gauge-independent way. While the starting point for this construction is a microscopic (single-nucleon) current model, the resulting operator of low-energy photon emission by a two-cluster system is expressed in terms of macroscopic quantities for the clusters and does not depend directly on their intrinsic coordinates and momenta. The multichannel algebraic scattering (MCAS) approach has been used to construct the initial- and final-state wave functions. We present a general expression for the scattering wave function obtained from the MCAS T matrix taking into account inelastic channels and Coulomb distortion. The developed formalism has been tested on the 3He(alpha,gamma)7Be reaction cross section at astrophysical energies. The energy dependence of the evaluated cross section and S factor agrees well with that extracted from measurement though the calculated quantities slightly overestimate data.
description: v2: some misprints fixed
Effect of management strategies and substrate composition on functional and taxonomic macroinvertebrate communities in lowland ditches of Alto Adige/Südtirol.
Creators: name: Vallefuoco, Francesca
name: Vanek, Magdalena
name: Scotti, Alberto
name: Bottarin, Roberta
Publisher: name: Zenodo
Year: 2023

description: Ditches could represent a tool for biodiversity enhancement and preservation in agricultural environments, also in Alpine regions. Macroinvertebrates and environmental factors describing water quality, substrate composition, hydrology, and geomorphology were collected in 10 ditches located in the Adige Valley, within the Biodiversity Monitoring program of South Tyrol. This study investigates the effects of ditch maintenance strategies operated in situ by the consortia (i.e., within an area of none, low and medium intensity) on taxonomic and functional macroinvertebrate diversity. The functional structure of the benthic community was described using 7 biological traits related to microhabitat/substrate, temperature, trophic status and feeding preferences, pesticide sensitivity, respiration and locomotion strategies. We observed significant differences between management strategies in terms of both biological assemblages and environmental parameters. According to our results, these lowland ditches were mainly characterised by plant substrates such as algae and helophytes. High concentrations of water nutrients, river depth, temperature and conductivity were associated to high intensities and frequencies of ditch maintenance. Furthermore, a significant decrease in %EPT and functional divergence was observed with increasing management intensity. Therefore, a sustainable management plan for ditch functioning is crucial to secure and improve both agricultural purposes and its biodiversity conservation potential in Alto Adige/Südtirol.
Gattendorfiidae Bartzsch & Weyer 1987
Creators: name: Korn, Dieter
name: Weyer, Dieter
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Cephalopoda
Goniatitida
Gattendorfiidae

description: Family Gattendorfiidae Bartzsch & Weyer, 1987
[nom. transl. Korn (1994: 69), ex Gattendorfiinae Bartzsch & Weyer, 1987]
Diagnosis
Family of the superfamily Prionoceratoidea with the sutural formula E A L U I; external lobe lanceolate or slightly pouched; adventive lobe deep, V-shaped or lanceolate and pointed; the lateral lobe has a position on the umbilical wall. Conch in the juvenile stage subevolute or evolute; adult stage involute to evolute, but usually subinvolute. Shell ornament with fine to coarse growth lines, often with rursiradiate direction. Ribs occur in several independent lineages in varying morphology.
Included subfamilies
Gattendorfiinae Bartzsch & Weyer, 1987; Pseudarietitinae Bartzsch & Weyer, 1987.
Remarks
In the Treatise revision, Kullmann (2009) expressed a view of the family Gattendorfiidae that is clearly different from previously published concepts (Bartzsch & Weyer 1987, 1988a; Korn 1994; Korn & Klug 2002). His scheme differs, on the one hand, in that the gattendorfiid and pseudarietitid clades are not considered as sister groups and, on the other hand, in that genera such as Acutimitoceras and Stockumites are also placed in the family Gattendorfiidae. The subfamily Acutimitoceratinae is treated there as a junior synonym of the family Gattendorfiidae.
The definition of the family Gattendorfiidae as done by Kullmann (2009) contains some problems. It states that the family is characterised by a “shell surface with rursiradiate growth lines or ribbing”; however, this only applies to some representatives (Gattendorfia, Zadelsdorfia, Weyerella, Gattenpleura). This does not apply to those genera that we place in the subfamily Acutimitoceratinae. The biggest problem with this scheme, however, is that it cuts the evolutionary line from Stockumites to Nicimitoceras to Imitoceras and, by placing the latter genus in the family Prionoceratidae, would make the family Gattendorfiidae a polyphyletic unit.
description: Published as part of Korn, Dieter & Weyer, Dieter, 2023, The ammonoids from the Gattendorfia Limestone of Oberrödinghausen (Early Carboniferous; Rhenish Mountains, Germany), pp. 1-230 in European Journal of Taxonomy 882 on page 114, DOI: 10.5852/ejt.2023.882.2177, http://zenodo.org/record/8177581
Non-Hermitian physics and engineering in silicon photonics
Creators: name: Wang, Changqing
name: Fu, Zhoutian
name: Yang, Lan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Systems and Control (eess.SY)
subject: Applied Physics (physics.app-ph)
subject: Classical Physics (physics.class-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Silicon photonics has been studied as an integratable optical platform where numerous applicable devices and systems are created based on modern physics and state-of-the-art nanotechnologies. The implementation of quantum mechanics has been the driving force of the most intriguing design of photonic structures, since the optical systems are found of great capability and potential in realizing the analogues of quantum concepts and phenomena. Non-Hermitian physics, which breaks the conventional scope of quantum mechanics based on Hermitian Hamiltonian, has been widely explored in the platform of silicon photonics, with promising design of optical refractive index, modal coupling and gain-loss distribution. As we will discuss in this chapter, the unconventional properties of exceptional points and parity-time symmetry realized in silicon photonics have created new opportunities for ultrasensitive sensors, laser engineering, control of light propagation, topological mode conversion, etc. The marriage between the quantum non-Hermiticity and classical silicon platforms not only spurs numerous studies on the fundamental physics, but also enriches the potential functionalities of the integrated photonic systems.
description: 30 pages, 12 figures, 225 references. Link to the published version: https://link.springer.com/chapter/10.1007%2F978-3-030-68222-4_7
title: he Effects of Carbon Choice & Nitrate Loading on IFAS Partial Denitrification/Anammox Processes
Creators: name: Cornelius, Lawrence
Publisher: name: Old Dominion University
publisherIdentifier: https://ror.org/04zjtrb98
publisherIdentifierScheme: ROR
Year: 2024

description: The Hampton Roads Sanitation District's James River Treatment Plant traditionally operated with an A2O configuration and aerobic IFAS. To improve nitrogen removal, eight of the nine treatment trains were reconfigured to a 5-stage process by converting their second anoxic zones to moving media IFAS with WWW2 media (World Water Works). This enabled the incorporation of the partial denitrification/anammox (PdNA) process. For effective partial denitrification in the second anoxic zone, a carbon source is required to convert NO3-N (nitrate-nitrogen) to NO2-N (nitrite-nitrogen), which anammox bacteria use. Ethanol was explored as a potential cost-effective alternative carbon source, hypothesized to exhibit a partial denitrification rate between that of methanol and glycerol. A pilot-scale experiment at the James River Treatment Plant was conducted to compare the efficacy of ethanol and methanol as external carbon sources for the PdNA process. Two identical PdNA IFAS reactors were operated in parallel, one fed with ethanol and the other with methanol, under varying COD loading conditions. The methanol-fed reactor consistently showed higher PdN efficiencies, better NH4 removal, and lower C/TIN values, indicating more efficient carbon utilization, thus establishing methanol as the preferred choice for PdNA. Subsequently, the study examined the resilience of PdNA systems to nitrate loading. The pilot setup was modified to include two reactors, both fed with methanol; one served as a baseline, and the other received supplemental nitrate. Thesereactors were operated in parallel and evaluated for removal rates and PdN efficiency. Over time, the nitrate-supplemented reactor developed a thicker biofilm and exhibited increased NO3 removal, but this came at the cost of reduced ammonia removal. The reactor favored full denitrification over partial denitrification, resulting in lower NO2 production and thus limited substrate availability for anammox bacteria, leading to lower in-situ NH4 removal. The results of this study are crucial for designing full-scale PdNA IFAS systems, particularly concerning the choice of external carbon sources and the impact of NO3 loading on system performance.