cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
D3.2 – Initial public release of high-performance software components
Creators: name: Jalby, William
Publisher: name: Zenodo
Year: 2022
Subjects: QMC
TREX codes

description: In this first document, after a brief Introduction (Section 1), we are describing the rationale for QMCkl design guidelines (Section 2). In particular, objectives and general methodology will be highlighted. Then, more precise details on the methodology will be given by walking through a detailed DGEMM example (Section 3). Finally, some preliminary performance results on a key QMCkl routine (JASTROW computation will be given). This first document essentially covers work in progress. As such, first, many implementation choices presented in this first document are still preliminary and might evolve. Second, we first focused on multicore CPU: although we kept in mind GPU constraints and issues, most of the implementation efforts targeted multicore CPU (X86 and ARM) and the first performance results have been obtained on X86. More performance tests on X86 are underway, and tests on ARM will be carried out in the coming months as well as the first QMCkl extensions to cover GPU. All of these topics will be covered in detail in the second deliverable.
The Russell Tribunal on Palestine: Conveying Activist Wisdom for Future Action
Creators: name: Timmer, Patrick
Publisher: name: Zenodo
Year: 2023
Subjects: Russell Tribunal on Palestine, peoples' tribunals, people's tribunals, activist wisdom, law, legal strategy, activist strategy, Palestinian liberation, Palestine, solidarity, Zionism, Israel, settler colonialism, apartheid

description: The Russell Tribunal on Palestine was a peoples’ tribunal convened in six sessions across North America, Europe, and Africa between 2010 and 2014 that sought to advance the Palestinian cause. This dissertation – a piece of insurgent research based primarily on eight semi-structured interviews with the Tribunal’s activists – is an exploratory narrative account of the Tribunal that aims to convey some of the as-yet-unearthed practical wisdom of its activists to the wider Palestinian liberation movement and solidarity sub-movement. In it, my interlocutors share some of their experiences, perspectives, and reflections on the Russell Tribunal on Palestine with me, deepening our understanding of what the Tribunal was – in terms of what the thinking behind it was, what it did for the activists involved, and how its organizational dynamics played out – and how it might be done differently in the future. As such, this dissertation gives us, as Palestine solidarity and Palestinian liberation activists, tools to help us think even more expansively about how we can advance the struggle for Palestinian liberation today.
Discovery of WASP-113b and WASP-114b, two inflated hot-Jupiters with contrasting densities
Creators: name: Barros, S. C. C.
name: Brown, D. J. A.
name: Hébrard, G.
name: Chew, Y. Gómez Maqueo
name: Anderson, D. R.
name: Boumis, P.
name: Delrez, L.
name: Hay, K. L.
name: Lam, K. W. F.
name: Llama, J.
name: Lendl, M.
name: McCormac, J.
name: Skiff, B.
name: Smalley, B
name: Turner, O
name: Vanhuysse, M.
name: Armstrong, D. J.
name: Boisse, I.
name: Bouchy, F.
name: Cameron, A. Collier
name: Faedi, F.
name: Gillon, M.
name: Hellier, C.
name: Jehin, E.
name: Liakos, A.
name: Meaburn, J.
name: Osborn, H. P.
name: Pepe, F.
name: Plauchu-Frayn, I.
name: Pollacco, D.
name: Queloz, D.
name: Rey, J.
name: Spake, J.
name: Ségransan, D.
name: Triaud, A. H. M.
name: Udry, S.
name: Walker, S. R.
name: Watson, C. A.
name: West, R. G.
name: Wheatley, P. J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present the discovery and characterisation of the exoplanets WASP-113b and WASP-114b by the WASP survey, {\it SOPHIE} and {\it CORALIE}. The planetary nature of the systems was established by performing follow-up photometric and spectroscopic observations. The follow-up data were combined with the WASP-photometry and analysed with an MCMC code to obtain system parameters. The host stars WASP-113 and WASP-114 are very similar. They are both early G-type stars with an effective temperature of $\sim 5900\,$K, [Fe/H]$\sim 0.12$ and $T_{\rm eff}$ $\sim 4.1$dex. However, WASP-113 is older than WASP-114. Although the planetary companions have similar radii, WASP-114b is almost 4 times heavier than WASP-113b. WASP-113b has a mass of $0.48\,$ $\mathrm{M}_{\rm Jup}$ and an orbital period of $\sim 4.5\,$days; WASP-114b has a mass of $1.77\,$ $\mathrm{M}_{\rm Jup}$ and an orbital period of $\sim 1.5\,$days. Both planets have inflated radii, in particular WASP-113 with a radius anomaly of $\Re=0.35$. The high scale height of WASP-113b ($\sim 950$ km ) makes it a good target for follow-up atmospheric observations.
description: 9 pages, 6 figures, 5 tables, accepted for publication in A&A
Experimental Study of a Triode Reflex Geometry Vircator
Creators: name: Baryshevsky, Vladimir
name: Gurinovich, Alexandra
name: Gurnevich, Evgeny
name: Molchanov, Pavel
Publisher: name: arXiv
Year: 2016
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Triode reflex geometry vircator operating within 3.0 - 4.2 GHz range with efficiency up to 6% is developed and experimentally investigated. Shiftable reflectors are shown to enable frequency tuning and output power control. Radiation frequency and power are analyzed for different cathode-anode gap values and varied reflector positions.
description: 4 pages, 14 figures
Graduale ad festum b.M.v : "Sancta Maria, mater Dei" für 4 Singstimmen, 2 Viol., Viola, Bass & Orgel : KV Nr. 273
Creators: name: Mozart, Wolfgang Amadeus
Publisher: name: Breitkopf & Härtel
Year: 1880

description: II. Vokalmusik. 3. Geistliche Chorwerke
description: [W.A. Mozart]
description: Stimmen: Viol. 1 & 2, Viola, Vc. & Bass. Handschriftl. 1 weiteres Ex. v. Viol. 1
description: Digitalisierung=Digitization=Numérisation September 2023 TIFF
description: Zusätzlich handschriftl beiliegend: Weitere Stimme für Vl. 1
PERFIL EPIDEMIOLÓGICO DAS ISTS ENTRE JOVENS DE 15 A 29 ANOS NA UBS PALMEIRAS DO NORTE, ARAGUAÍNA/TO: DESAFIOS E DETERMINANTES DA VULNERABILIDADE
Creators: name: Rejanne Lima ARRUDA
name: Giselly Santos SILVA
name: Lígia Linhares Moraes CUNHA
name: Vinícius Alves CARVALHO
name: Carolina Galgane Lage MIRANDA
Publisher: name: Zenodo
Year: 2024
Subjects: Infecções Sexualmente Transmissíveis (ISTs)
Comportamento sexual
Políticas de saúde e educação sexual

description: RESUMO

 

As infecções sexualmente transmissíveis (IST) têm sido um fenômeno global, apresentando-se como um dos mais importantes problemas de saúde pública. Objetivo: Este estudo apresenta como objetivo analisar a prevalência e os fatores associados às infecções sexualmente transmissíveis (ISTs) entre adultos jovens com idades entre 15 e 29 anos atendidos na UBS Palmeiras do Norte da cidade de Araguaína-TO no ano de 2021. Metodologia: Estudo qualiquantitativo realizado  através da análise dos prontuários de pacientes diagnosticados com alguma Infeção Sexualmente Transmissível (IST’s), cujas variáveis analisadas foram: idade, sexo e estado civil, além de informações obtidas em questionários aplicados por agentes de saúdes, sendo estas: tipo de IST adquirida, quantidade de parceiros, uso de preservativo e motivo do não uso destes. Resultados e Discussões: Foi observado que uma proporção significativa de pacientes do sexo masculino estava infectada com sífilis, HIV e outras ISTs, sendo a sífilis a mais prevalente entre ambos os sexos. A prevalência de ISTs não se correlacionou com o nível de educação, sugerindo outros fatores contribuintes. A orientação heterossexual foi predominante entre os participantes, e o estado civil não influenciou significativamente a prevalência de ISTs. Múltiplos parceiros eram mais comuns entre os homens, com casos extraconjugais. O uso inconsistente de preservativos foi prevalente entre os participantes, com razões para a não utilização incluindo aversão aos preservativos, falta de disponibilidade e recusa do parceiro. Conclusão: A partir dos resultados da pesquisa destaca-se a necessidade de intervenções direcionadas para promover práticas sexuais seguras e prevenção de ISTs entre adultos jovens.
Combined Molecular and Elemental Mass Spectrometry Approaches for Absolute Quantification of Proteomes: Application to the Venomics Characterization of the Two Species of Desert Black Cobras, Walterinnesia aegyptia and Walterinnesia morgani
Creators: name: Calvete, Juan J.
name: Pla, Davinia
name: Els, Johannes
name: Carranza, Salvador
name: Damm, Maik
name: Hempel, Benjamin-Florian
name: John, Elisa B. O.
name: Petras, Daniel
name: Heiss, Paul
name: Nalbantsoy, Ayse
name: Göçmen, Bayram
name: Süssmuth, Roderich D.
name: Calderón-Celis, Francisco
name: Nosti, Alicia Jiménez
name: Encinar, Jorge Ruiz
Publisher: name: American Chemical Society (ACS)
Year: 2021
Subjects: subject: 500 Naturwissenschaften und Mathematik::540 Chemie::543 Analytische Chemie
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::572 Biochemie
subject: snake venomics
subject: combined top-down and bottom-up venomics
subject: hybrid elemental and molecular mass spectrometry
subject: absolute quantification of venom proteome
subject: desert black cobra
subject: Walterinnesia aegyptia
subject: Walterinnesia morgani

description: We report a novel hybrid, molecular and elemental mass spectrometry (MS) setup for the absolute quantification of snake venom proteomes shown here for two desert black cobra species within the genus Walterinnesia, Walterinnesia aegyptia and Walterinnesia morgani. The experimental design includes the decomplexation of the venom samples by reverse-phase chromatography independently coupled to four mass spectrometry systems: the combined bottom-up and top-down molecular MS for protein identification and a parallel reverse-phase microbore high-performance liquid chromatograph (RP-μHPLC) on-line to inductively coupled plasma (ICP-MS/MS) elemental mass spectrometry and electrospray ionization quadrupole time-of-flight mass spectrometry (ESI-QToF MS). This allows to continuously record the absolute sulfur concentration throughout the chromatogram and assign it to the parent venom proteins separated in the RP-μHPLC-ESI-QToF parallel run via mass profiling. The results provide a locus-resolved and quantitative insight into the three desert black cobra venom proteome samples. They also validate the units of measure of our snake venomics strategy for the relative quantification of snake venom proteomes as % of total venom peptide bonds as a proxy for the % by weight of the venom toxins/toxin families. In a more general context, our work may pave the way for broader applications of hybrid elemental/molecular MS setups in diverse areas of proteomics.
Interplanetary Coronal Mass Ejections and Stream Interaction Regions observed by Tianwen-1 and Maven at Mars
Creators: name: Chi, Yutian
name: Shen, Chenglong
name: Cheng, Long
name: Yu, Bingkun
name: Miao, Bin
name: Wang, Yuming
name: Zhang, Tielong
name: Zou, Zhuxuan
name: Xu, Mengjiao
name: Pan, Zonghao
name: Su, Zhenpeng
name: Guo, Jingnan
name: Mao, Dongwei
name: Zhong, Zhihui
name: Zhang, Zhiyong
name: Liu, Junyan
name: Wang, Can
name: Wu, Zhiyong
name: Wang, Guoqiang
name: Xiao, Sudong
name: Liu, Kai
name: Hao, Xinjun
name: Li, Yiren
name: Chen, Manming
name: Du, Yang
Publisher: name: arXiv
Year: 2023
Subjects: subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Tianwen-1 spacecraft (Wan et al. 2020) is China's first Mars exploration mission. The Mars Orbiter Magnetometer (MOMAG) is a scientific instrument aboard the Tianwen-1 mission that is designed to study magnetic fields at Mars, including the solar wind to the magnetosheath and the ionosphere. Using the first Tianwen-1/MOMAG data that is publicly available, we present interplanetary coronal mass ejection (ICME) and stream interaction region (SIR) catalogues based on in-situ observations at Mars between November 16, 2021, and December 31, 2021. We compared the magnetic field intensity and vector magnetic field measurements from Tianwen-1/MOMAG and Mars Atmospheric Volatile EvolutioN (MAVEN)/MAG during the ICME and SIR interval and found a generally good consistency between them. Due to MAVEN's orbital adjustment since 2019, the Tianwen-1/MOMAG instrument is currently the almost unique interplanetary magnetic field monitor at Mars. The observations indicate that the MOMAG instrument on Tianwen-1 is performing well and can provide accurate measurements of the vector magnetic field in the near-Mars solar wind space. The multi-point observations combining MOMAG, MINPA, and MEPA on board Tianwen-1 with MAG, SWIA, and STATIC on board MAVEN will open a window to systematically study the characteristic of ICMEs and SIRs at Mars, and their influences on the Martian atmosphere and ionosphere.
Vortex states in a non-Abelian magnetic field
Creators: name: Nikolic, Predrag
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A type-II superconductor survives in an external magnetic field by admitting an Abrikosov lattice of quantized vortices. This is an imprint of the Aharonov-Bohm effect created by the Abelian U(1) gauge field. The simplest non-Abelian analogue of such a gauge field, which belongs to the SU(2) symmetry group, can be found in topological insulators. Here we discover a superconducting ground state with a lattice of SU(2) vortices in a simple two-dimensional model that presents an SU(2) "magnetic" field (invariant under time-reversal) to attractively interacting fermions. The model directly captures the correlated topological insulator quantum well, and approximates one channel for instabilities on the Kondo topological insulator surface. Due to its simplicity, the model might become amenable to cold atom simulations in the foreseeable future. The vitality of low-energy vortex states born out of SU(2) "magnetic" fields is promising for the creation of incompressible vortex liquids with non-Abelian fractional excitations.
description: 14 pages, 8 figures
title: Privilegien in der Moderne
Creators: name: Walgenbach, Katharina
Publisher: name: DuEPublico, Duisburg-Essen Publications Online
Year: 2022
Subjects: subject: FOS: Political science
valueUri: http://www.oecd.org/science/inno/38235147.pdf

description: It is a central promise of modernity that not birth, status, or religion should determine one’s social position in society but individual achievements. The central thesis underpinning this paper is that privileges have become invisible in the modern age. It is further argued that the meritocratic narrative significantly contributes to this invisibilization. However, the invisibility of privileges in the modern era does not mean that they do not exist. For this reason, the second part of the article elaborates on central assumptions of Privilege Studies (Critical Whiteness Studies, Educational Privileges, Heteronormativity, Masculinity Studies, Ableism Studies, Occidentalism Studies) to contribute to a theorization of privilege. At the end of the article, this synthesis finally leads to initial considerations for developing the analytical term ‘structural privileges,’ with which invisibilized privileges in modernity could be grasped.
MPEC 2023-R217 : 2023 RV9
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 RV9

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Classical observables from partial wave amplitudes
Creators: name: Lee, Hojin
name: Lee, Sangmin
name: Mazumdar, Subhajit
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the formalism of Kosower-Maybee-O'Connell (KMOC) to extract classical impulse from quantum amplitude in the context of the partial wave expansion of a 2-to-2 elastic scattering. We take two complementary approaches to establish the connection. The first one takes advantage of Clebsch-Gordan relations for the base amplitudes of the partial wave expansion. The second one is a novel adaptation of the traditional saddle point approximation in the semi-classical limit. In the former, an interference between the S-matrix and its conjugate leads to a large degree of cancellation such that the saddle point approximation to handle a rapidly oscillating integral is no longer needed. As an example with a non-orbital angular momentum, we apply our methods to the charge-monopole scattering problem in the probe limit and reproduce both of the two angles characterizing the classical scattering. A spinor basis for the partial wave expansion, a non-relativistic avatar of the spinor-helicity variables, plays a crucial role throughout our computations.
description: 48 pages, 3 figures; v2. minor corrections
Off-axis Point Spread Function Reconstruction for Single Conjugate Adaptive Optics
Creators: name: Wagner, Roland
name: Niebsch, Jenny
name: Ramlau, Ronny
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Modern Giant Segmented Mirror Telescopes (GSMTs) like the Extremely Large Telescope, which is currently under construction, depend heavily on Adaptive Optics (AO) systems to correct for atmospheric distortions. However, a residual blur always remains in the astronomical images corrected by Single Conjugate AO (SCAO) systems due to fitting and bandwidth errors, which can mathematically be described by a convolution of the true image with a point spread function (PSF). Due to the nature of the turbulent atmosphere and its correction, the PSF is spatially varying, which is known as aniosplanatic effect. The PSF serves, e.g., as a quality measure for the science images and therefore needs to be known as accurately as possible. In this paper, we present an algorithm for PSF reconstruction in directions apart from the guide star direction in an SCAO system adapted to the needs of GSMTs focused on estimating the contribution of the anisoplanatic and generalized fitting error to the PSF. In particular, the PSF reconstruction algorithm for Single Conjugate Adaptive Optics from (Wagner, 2018) is combined with an algorithm for time-dependent atmospheric tomography from (Niebsch, 2021) to obtain a direction dependent reconstruction of the post-AO PSF. Results obtained in an end-to-end simulation tool show a qualitatively good reconstruction of the PSF compared to the PSF calculated directly from the simulated incoming wavefront as well as a stable performance with respect to imprecise knowledge of atmospheric parameters.
description: arXiv admin note: text overlap with arXiv:2012.11429
MPEC 2023-R218 : 2023 RW9
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 RW9

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Add CARE to FAIR - The Story Behind the New Ipbes Data Management Policy
Creators: name: Krug, Rainer M.
Publisher: name: Zenodo
Year: 2022
Subjects: data management policy
FAIR
CARE
IPBES

description: In January 2020 the first Data Management Policy of the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES) was approved (https://doi.org/10.5281/zenodo.3551079). This milestone was presented at the last WBF in 2020 (https://doi.org/10.5281/zenodo.3669004). But very soon after its approval, it was realised, that the policy does not tell the whole story: The policy lays a solid foundation for FAIR data management, but it does not address specific requirements of the handling and usage of Indigenous and Local Knowledge (ILK), which is used extensively in IPBES and follows strict rules (see the Talk by Peter Bates in this session). The CARE Principles for Indigenous Data Governance do provide a framework which supplements the FAIR data management principles (see the talk by Stephanie Russo Carroll in this session for a discussion of FAIR and CARE). The IPBES Task Force on Knowledge and Data therefore decided to develop a Data Management Policy v2.0 which incudes CARE as well as FAIR and which pays attention to the special role of Indigenous People and Local Communities (IPLCs). In this talk, I will discuss the motivation behind this decision, the considerations during the process, and the problems and challenges faced. Please also see the e-poster by A. Niamir (https://doi.org/10.5281/zenodo.3551078) about the data and knowledge management policy (https://doi.org/10.5281/zenodo.3551078 after approval).
Readout technologies for directional WIMP Dark Matter detection
Creators: name: Battat, J. B. R.
name: Irastorza, I. G.
name: Aleksandrov, A.
name: Guler, M. Ali
name: Asada, T.
name: Baracchini, E.
name: Billard, J.
name: Bosson, G.
name: Bourrion, O.
name: Bouvier, J.
name: Buonaura, A.
name: Burdge, K.
name: Cebrian, S.
name: Colas, P.
name: Consiglio, L.
name: Dafni, T.
name: D'Ambrosio, N.
name: Deaconu, C.
name: De Lellis, G.
name: Descombes, T.
name: Di Crescenzo, A.
name: Di Marco, N.
name: Druitt, G.
name: Eggleston, R.
name: Ferrer-Ribas, E.
name: Fusayasu, T.
name: Galan, J.
name: Galati, G.
name: Garcia, J. A.
name: Garza, J. G.
name: Gentile, V.
name: Garcia-Sciveres, M.
name: Giomataris, Y.
name: Guerrero, N.
name: Guillaudin, O.
name: Harton, J.
name: Hashimoto, T.
name: Hedges, M. T.
name: Iguaz, F.
name: Ikeda, T.
name: Jaegle, I.
name: Kadyk, J. A.
name: Katsuragawa, T.
name: Komura, S.
name: Kubo, H.
name: Kuge, K.
name: Lamblin, J.
name: Lauria, A.
name: Lee, E. R.
name: Lewis, P.
name: Leyton, M.
name: Loomba, D.
name: Lopez, J. P.
name: Luzon, G.
name: Mayet, F.
name: Mirallas, H.
name: Miuchi, K.
name: Mizumoto, T.
name: Mizumura, Y.
name: Monacelli, P.
name: Monroe, J.
name: Montesi, M. C.
name: Naka, T.
name: Nakamura, K.
name: Nishimura, H.
name: Ochi, A.
name: Papevangelou, T.
name: Parker, J. D.
name: Phan, N. S.
name: Pupilli, F.
name: Richer, J. P.
name: Riffard, Q.
name: Rosa, G.
name: Santos, D.
name: Sawano, T.
name: Sekiya, H.
name: Seong, I. S.
name: Snowden-Ifft, D. P.
name: Spooner, N. J. C.
name: Sugiyama, A.
name: Taishaku, R.
name: Takada, A.
name: Takeda, A.
name: Tanaka, M.
name: Tanimori, T.
name: Thorpe, T. N.
name: Tioukov, V.
name: Tomita, H.
name: Umemoto, A.
name: Vahsen, S. E.
name: Yamaguchi, Y.
name: Yoshimoto, M.
name: Zayas, E.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The measurement of the direction of WIMP-induced nuclear recoils is a compelling but technologically challenging strategy to provide an unambiguous signature of the detection of Galactic dark matter. Most directional detectors aim to reconstruct the dark-matter-induced nuclear recoil tracks, either in gas or solid targets. The main challenge with directional detection is the need for high spatial resolution over large volumes, which puts strong requirements on the readout technologies. In this paper we review the various detector readout technologies used by directional detectors. In particular, we summarize the challenges, advantages and drawbacks of each approach, and discuss future prospects for these technologies.
description: 58 pages, 26 figures, accepted by Physics Reports
title: Dwarsstroming Zuidergat: deelrapport 3 – Factual data rapport ADCP-metingen (februari 2023)
Creators: name: Plancke, Yves
name: De Maerschalck, Bart
Publisher: name: Flanders Hydraulics
Year: 2023

description: Title : WL Rapporten. Waterbouwkundig Laboratorium: Antwerpen. Volume : 20_108_3 Issue : Pagination : VI, 9 + 16 bijl.
Comparative Evaluation of Alternative Fuel Usage on Ships Cruising in Baltic Capesize Index C5 Route from the Environmental and Energy Efficiency Perspectives
Creators: name: Atalay, Ahmet Ali
Publisher: name: Zenodo
Year: 2023
Subjects: marine engineering
Fuel effiency
Alternative Fuels
GHG
Emission

description: Anthropogenic greenhouse gas (GHG) emissions, primarily driven by carbon dioxide (CO2), have disrupted Earth's atmospheric balance, resulting in global warming and its detrimental consequences. These effects range from adverse impacts on human health and biodiversity loss to water scarcity, food insecurity, and extreme climate events. Urgent and ambitious actions are imperative to mitigate these impacts. While maritime transportation is often viewed as an efficient mode of transport, it remains a significant GHG emitter, contributing to emissions on par with some of the world's largest emitting countries. Projections indicate that emissions from the maritime industry could surge by up to 250% by 2050. Therefore, decarbonizing the maritime sector is essential to meet the goals set in the Paris Agreement. This research aims to explore the potential of alternative fuels in reducing emissions and their practical implications for sustainable maritime operations. The study focuses on capesize class ships operating on the Baltic Capesize Index (BCI) C5 route. To conduct this research, comprehensive data on energy consumption and emissions of these ships, considering factors such as fuel consumption rates, voyage distances, and operational characteristics, will be collected. Emissions generated by these vessels using marine diesel oil and alternative fuels like ammonia, liquefied natural gas (LNG), and hydrogen will be calculated and compared. By quantifying emission differences between traditional marine diesel oil and alternative fuels, the research evaluates the environmental benefits and challenges associated with each option. Additionally, economic viability, technological feasibility, and infrastructure requirements for adopting alternative fuels in the maritime sector will be considered. In conclusion, this research addresses the critical issue of GHG emissions in the maritime sector, with a specific emphasis on the BCI C5 route. By conducting a comprehensive analysis of emission differences between traditional marine diesel oil and alternative fuels, the study contributes to our understanding of the effectiveness of alternative fuels in reducing emissions and promoting sustainability within the global shipping industry. The findings can inform policy development, guide strategic decision-making processes, and support efforts aimed at mitigating the environmental impacts of maritime transportation. Ultimately, these efforts are crucial for a greener and more sustainable future for the maritime industry, ensuring efficient goods movement on the BCI C5 route and beyond. The study's outcomes reveal that LNG, Methanol, and Hydrogen, as alternative fuel options, significantly reduce emissions and carbon footprints compared to conventional marine fuels, making them promising choices for a cleaner maritime industry.
Applications of the loop-tree duality
Creators: name: Rodrigo, German
name: Driencourt-Mangin, Felix
name: Sborlini, German F. R.
name: Hernandez-Pinto, Roger Jose
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We describe a new method to perform NLO calculations, combining real and virtual amplitudes at the integrand level, with a fully local compensation between them in the IR, and between the virtual integrand and properly defined counter-terms in the UV, in such a way that physical observables can be computed in 4 dimensions. One of the advantages of the method is that all the scattering amplitudes are integrated simultaneously, without the need for tensor reduction, or projection onto sets of master integrals. As such, it could offer great progress in the automation of NLO calculations, where the actual bottle-necks are the complexity of the analytical calculations for multi-leg processes, and the numerical stability of the result.
description: Presented at 13th DESY Workshop on Elementary Particle Theory: Loops and Legs in Quantum Field Theory, 24-29 April 2016, Leipzig
Multiwavelength and astrometric study of the DBS-89-90-91 embedded clusters region
Creators: name: Corti, Mariela A.
name: Baume, Gustavo L.
name: Orellana, Rosa B.
name: Suad, Laura A.
name: Affiliations
name: :
name: Geofísicas, - Facultad de Ciencias Astronómicas y
name: Argentina., .
name: de Radioastronomía, - Instituto Argentino
name: Argentina., .
name: La Plata, Instituto de Astrofísica
name: Argentina., .
name: del Espacio, Instituto de Astronomía y Física
name: Argentina, CABA.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Aims. Our main targets were to improve the understanding of the main properties of G316.8-0.1 (IRAS 14416-5937) radio source where the DBS 89-90-91 embedded clusters are located, to identify the stellar population present in this region, and to study the interaction of these stars with the interstellar medium. Methods. We analyzed some characteristics of the G316.8-0.1 radio source consulting the SUMSS to study the radio continuum emission at 843 MHz and the H I SGPS at 21 cm. We also used photometric data at the JHK bands in the region of DBS 89-90-91 clusters obtained from the VVV survey and supplemented with 2MASS catalogue. The investigation of possible stars associated with the H II region was complemented with the astrometric analysis using the Gaia Early Data Release 3. To study the young stellar objects we consulted the mid-infrared photometric information from WISE, Spitzer-GLIMPSE Surveys, and MSX point source catalog. Results. The photometric and astrometric research carried out in the IRAS 14416-5937 region allowed us to improve the knowledge about the DBS 89-90-91 embedded clusters and their interaction with the interstellar medium. In the case of DBS 89 cluster, we identified 9 astrophotometric candidate members and 19 photometric candidate members, whereas of DB S 90-91 clusters we found 18 candidate photometric members. We obtained a distance value for DBS 89 linked to G316.8-0.1 radio source of 2.9 (0.5) kpc. We also investigated 12 Class I YSOc, 35 Class II YSOc, 2 MYSOc and 1 CH II region distributed throughout the IRAS 14416-5937 region. Our analysis revealed that the G316.8-0.1 radio source is optically thin at frequency > 0.56 GHz. The H II regions G316.8-0.1-A and G316.8-0.1-B have similar radii and ionized hydrogen masses of 0.5 pc and 35 M, respectively.
description: Accepted for publication in Astronomy & Astrophysics; 17 pages, 11 figures, 6 tables and Appendix with other 6 tables
Electronic Structures of Ferromagnetic CeAgSb$_2$:Soft X-ray Absorption, Magnetic Circular Dichroism and Angle-Resolved Photoemission Spectroscopies
Creators: name: Saitoh, Yuji
name: Fujiwara, Hidenori
name: Yamaguchi, Takashi
name: Nakatani, Yasuhiro
name: Mori, Takeo
name: Fuchimoto, Hiroto
name: Kiss, Takayuki
name: Yasui, Akira
name: Miyawaki, Jun
name: Imada, Shin
name: Yamagami, Hiroshi
name: Ebihara, Takao
name: Sekiyama, Akira
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report a combined study for the electronic structures of ferromagnetic CeAgSb$_2$ using soft X-ray absorption (XAS), magnetic circular dichroism (XMCD), and angle-resolved photoemission (ARPES) spectroscopies. The Ce $M_{4, 5}$ XAS spectra show very small satellite structures, reflecting a strongly localized character of the Ce $4f$ electrons. The linear dichroism effects in the Ce $M_{4, 5}$ XAS spectra demonstrate the ground state Ce $4f$ symmetry of $Γ{_6}$, the spatial distribution of which is directed along the $c$-axis. The XMCD results give support to the picture of local-moment magnetism in CeAgSb$_2$. Moreover it is also found that the theoretical band dispersions for LaAgSb$_2$ provides better description of the ARPES band structures than those for CeAgSb$_2$. Nevertheless, ARPES spectra at the Ce $3d$-$4f$ resonance show the momentum dependence for the intensity ratio between Ce $4f^{1}_{5/2}$ and $4f^{1}_{7/2}$ peaks in a part of the Brillouin zone, suggesting the non-negligible momentum dependent hybridization effect between the Ce $4f$ and the conduction electrons. This is associated with the moderate mass enhancement in CeAgSb$_2$.
description: to be published in Journal of the Physical Society of Japan
Interpretation of resistivity of good conductors in terms of the interatomic Coulomb potential varying as a function of the interatomic distance
Creators: name: Kim, Min Tae
Publisher: name: figshare
Year: 2022
Subjects: Electronic and magnetic properties of condensed matter; superconductivity

description: The behavior of the resistivity of good conductors, Cu, Au, and Ag, are analyzed and compared with that of the interatomic distance as a function of temperature. The two parameters are well synchronized, even in the molten state of the metals. The interatomic distance is described in terms of phonon energy, which is assumed to originate from the metallic bonding energy fluctuating according to external conditions. The electrical conduction of a conductor is approached as the propagation of the bonding energy given as the Coulomb potential energy. This approach gives rise to the permittivity of metals from the interatomic distance as a function of temperature. Thereon, the resistivity of metals is discussed in terms of permittivity.
Solving the Quantum Many-Body Problem with Artificial Neural Networks
Creators: name: Carleo, Giuseppe
name: Troyer, Matthias
Publisher: name: arXiv
Year: 2016
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The challenge posed by the many-body problem in quantum physics originates from the difficulty of describing the non-trivial correlations encoded in the exponential complexity of the many-body wave function. Here we demonstrate that systematic machine learning of the wave function can reduce this complexity to a tractable computational form, for some notable cases of physical interest. We introduce a variational representation of quantum states based on artificial neural networks with variable number of hidden neurons. A reinforcement-learning scheme is then demonstrated, capable of either finding the ground-state or describing the unitary time evolution of complex interacting quantum systems. We show that this approach achieves very high accuracy in the description of equilibrium and dynamical properties of prototypical interacting spins models in both one and two dimensions, thus offering a new powerful tool to solve the quantum many-body problem.
c-number Quantum Generalised Langevin Equation for an open system
Creators: name: Kantorovich, L.
name: Ness, H.
name: Stella, L.
name: Lorenz, C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We derive a $c-$number Generalised Langevin Equation (GLE) describing the evolution of the expectation values $\left\langle x_{i}\right\rangle_{t}$ of the atomic position operators $x_{i}$ of an open system. The latter is coupled linearly to a harmonic bath kept at a fixed temperature. The equations of motion contain a non-Markovian friction term with the classical kernel {[}L. Kantorovich - PRB 78, 094304 (2008){]} and a zero mean \emph{non-Gaussian} random force with correlation functions that depend on the initial preparation of the open system. We used a density operator formalism without assuming that initially the combined system was decoupled. The only approximation made in deriving quantum GLE consists in assuming that the Hamiltonian of the open system at time $t$ can be expanded up to the second order with respect to operators of atomic displacements $u_{i}=x_{i}-\left\langle x_{i}\right\rangle_{t}$ in the open system around their exact atomic positions $\left\langle x_{i}\right\rangle_{t}$ (the "harmonisation" approximation). The noise is introduced to ensure that sampling many quantum GLE trajectories yields exactly the average one. An explicit expression for the pair correlation function of the noise, consistent with the classical limit, is also proposed. Unlike the usually considered quantum operator GLE, the proposed $c-$number quantum GLE can be used in direct molecular dynamic simulations of open systems under general equilibrium or non-equilibrium conditions.
description: 33 pages, 4 pictures
`imaka - a ground-layer adaptive optics system on Maunakea
Creators: name: Chun, Mark
name: Lai, Olivier
name: Toomey, Douglas
name: Lu, Jessica
name: Service, Max
name: Baranec, Christoph
name: Thibault, Simon
name: Brousseau, Denis
name: Hayano, Yutaka
name: Oya, Shin
name: Santi, Shane
name: Kingery, Christopher
name: Loss, Keith
name: Gardiner, John
name: Steele, Brad
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present the integration status for `imaka, the ground-layer adaptive optics (GLAO) system on the University of Hawaii 2.2-meter telescope on Maunakea, Hawaii. This wide-field GLAO pathfinder system exploits Maunakea's highly confined ground layer and weak free-atmosphere to push the corrected field of view to ~1/3 of a degree, an areal field approaching an order of magnitude larger than any existing or planned GLAO system, with a FWHM ~ 0.33 arcseconds in the visible and near infrared. We discuss the unique design aspects of the instrument, the driving science cases and how they impact the system, and how we will demonstrate these cases on the sky.
description: 9 pages, 5 figures
Turbulent processing of PAHs in protoplanetary discs -- Coagulation and freeze-out leading to depletion of gas-phase PAH
Creators: name: Lange, K.
name: Dominik, C.
name: Tielens, A. G. G. M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Polycyclic aromatic hydrocarbons (PAHs) have been detected in numerous circumstellar discs. We propose the continuous processing of PAHs through clustering, adsorption on dust grains, and their reverse-processes as key mechanisms to reduce the emission-capable PAH abundance in protoplanetary discs. This cycle of processing is driven by vertical turbulence in the disc mixing PAHs between the disc midplane and the photosphere. We used a theoretical Monte Carlo model for photodesorption and a coagulation code in the disc midplane to estimate the relevance and timescale of these processes in a Herbig Ae/Be disc environment. By combining these components in a 1D vertical model, we calculated the gas-phase depletion of PAHs that stick as clusters on dust grains. Our results show that the clustering of gas-phase PAHs is very efficient, and that clusters with more than 100 monomers can grow for years before they are able to freeze out in the disc midplane. Once a PAH cluster is frozen on the dust grain surface, the large heat capacity of these clusters prevents them from evaporating off the grains in UV-rich environments such as the photosphere. Therefore, the clustering of PAHs followed by freeze-out can lead to a depletion of gas-phase PAHs in discs. Evaluated over the lifetime of protoplanetary discs, we find a depletion of PAHs by a factor that ranges between 50 and 1000 compared to the standard ISM abundance of PAHs in the inner disc through turbulent processing. Through these processes, we favour PAHs smaller than circumovalene as the major gas-phase emitters of the disc photosphere as larger PAH monomers cannot photodesorb from the grain surface. These gas-phase PAHs co-exist with large PAH clusters sticking on dust grains. We find a close relation between the amount of PAHs frozen out on dust grains and the dust population, as well as the strength of the vertical turbulence.
description: Accepted for Astronomy and Astrophysics. 18 pages, 14 figures
Statistics of Dark Matter Substructure: III. Halo-to-Halo Variance
Creators: name: Jiang, Fangzhou
name: Bosch, Frank C. van den
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a study of unprecedented statistical power regarding the halo-to-halo variance of dark matter substructure. Using a combination of N-body simulations and a semi-analytical model, we investigate the variance in subhalo mass fractions and subhalo occupation numbers, with an emphasis on how these statistics scale with halo formation time. We demonstrate that the subhalo mass fraction, f_sub, is mainly a function of halo formation time, with earlier forming haloes having less substructure. At fixed formation redshift, the average f_sub is virtually independent of halo mass, and the mass dependence of f_sub is therefore mainly a manifestation of more massive haloes assembling later. We compare observational constraints on f_sub from gravitational lensing to our model predictions and simulation results. Although the inferred f_sub are substantially higher than the median LCDM predictions, they fall within the 95th percentile due to halo-to-halo variance. We show that while the halo occupation distribution of subhaloes, P(N|M), is super-Poissonian for large , a well established result, it becomes sub-Poissonian for < 2. Ignoring the non-Poissonity results in systematic errors of the clustering of galaxies of a few percent, and with a complicated scale- and luminosity-dependence. Earlier-formed haloes have P(N|M) closer to a Poisson distribution, suggesting that the dynamical evolution of subhaloes drives the statistics towards Poissonian. Contrary to a recent claim, the non-Poissonity of subhalo occupation statistics does not vanish by selecting haloes with fixed mass and fixed formation redshift. Finally, we use subhalo occupation statistics to put loose constraints on the mass and formation redshift of the Milky Way halo. Using observational constraints on the V_max of the most massive satellites, we infer that 0.25
description: 19 pages, 11 figures, submitted to MNRAS
Effect of nitrogen introduced at the SiC/SiO$_2$ interface and SiC side on the electronic states by first-principles calculation
Creators: name: Tachiki, Keita
name: Nishiya, Yusuke
name: Iwata, Jun-ichi
name: Matsushita, Yu-ichiro
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this study, using first-principles calculations, we investigate the behavior of electrons at the SiC/SiO$_2$ interface when nitrogen is introduced as a dopant within a few nm of the SiC surface. When a highly doped nitrogen layer (5$\times$10$^{19}$ cm$^{-3}$) is introduced within a few nm of the SiC(11$\bar{2}$0) surface, the electronic state is not significantly affected if the doping region is less than 4 nm. However, if the doping region exceeds 4 nm, the effect of quantum confinement decreases, which increases the electron density induced in the inversion layer. As for the wave function, even when an electric field is applied, the peak shifts toward the direction in which the electrons are pulled away from the interface. This reduces the effect of electron scattering at the interface and improves electron mobility.
Community detection in networks: Modularity optimization and maximum likelihood are equivalent
Creators: name: Newman, M. E. J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We demonstrate an exact equivalence between two widely used methods of community detection in networks, the method of modularity maximization in its generalized form which incorporates a resolution parameter controlling the size of the communities discovered, and the method of maximum likelihood applied to the special case of the stochastic block model known as the planted partition model, in which all communities in a network are assumed to have statistically similar properties. Among other things, this equivalence provides a mathematically principled derivation of the modularity function, clarifies the conditions and assumptions of its use, and gives an explicit formula for the optimal value of the resolution parameter.
description: 8 pages, 1 figure, 1 table
Time averages and periodic attractors at high Rayleigh number for Lorenz-like models
Creators: name: Ovsyannikov, Ivan
name: Rademacher, Jens D. M.
name: Welter, Roland
name: Lu, Bingying
Publisher: name: arXiv
Year: 2023
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 34D10, 37G15, 37N10, 33E05

description: Revisiting the Lorenz '63 equations in the regime of large of Rayleigh number, we study the occurrence of periodic solutions and quantify corresponding time averages of selected quantities. Perturbing from the integrable limit of infinite $ρ$, we provide a full proof of existence and stability of symmetric periodic orbits, which confirms previous partial results. Based on this, we expand time averages in terms of elliptic integrals with focus on the much studied average `transport', which is the mode reduced excess heat transport of the convection problem that gave rise to the Lorenz equations. We find a hysteresis loop between the periodic attractors and the non-zero equilibria of the Lorenz equations. These have been proven to maximize transport, and we show that the transport takes arbitrarily small values in the family of periodic attractors. In particular, when the non-zero equilibria are unstable, we quantify the difference between maximal and typically realized values of transport. We illustrate these results by numerical simulations and show how they transfer to various extended Lorenz models.