cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Characterization of Silicon-Photomultipliers for a Cosmic Muon Veto detector
Creators: name: Jangra, Mamta
name: Majumder, Gobinda
name: Saraf, Mandar
name: Satyanarayana, B.
name: Shinde, R. R.
name: Upadhya, Suresh S
name: Datar, Vivek M
name: Glenzinski, Douglas A.
name: Bross, Alan
name: Pla-Dalmau, Anna
name: Zutshi, Vishnu V.
name: Group, Robert Craig
name: Dukes, E Craig
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A Cosmic Muon Veto (CMV) detector using extruded scintillators is being designed around the mini-Iron Calorimeter detector at the transit campus of the India-based Neutrino Observatory at Madurai for measuring its efficiency at shallow depth underground experiments. The scintillation signal is transmitted through a Wavelength Shifting (WLS) fibre and readout by Hamamatsu Silicon-Photomultipliers (SiPMs). A Light Emitting Diode (LED) system is included on the front-end readout for in-situ calibration of the gain of each SiPM. A characterization system was developed for the measurement of gain and choice of the overvoltage (Vov) of SiPMs using LED as well as a cosmic muon telescope. The Vov is obtained by studying the noise rate, the gain of the SiPM, and the muon detection efficiency. In case of any malfunction of the LED system during the operation, the SiPM can also be calibrated with the noise data as well as using radioactive sources. This paper describes the basic characteristics of the SiPM and the comparison of the calibration results using all three methods, as well as the Vov of the SiPMs and muon selection criteria for the veto detector.
description: 22 pages, 23 figures
Theory of current-driven magnetization dynamics in inhomogeneous ferromagnets
Creators: name: Tserkovnyak, Yaroslav
name: Brataas, Arne
name: Bauer, Gerrit E. W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We give a brief account of recent developments in the theoretical understanding of the interaction between electric currents and inhomogeneous ferromagnetic order parameters. We start by discussing the physical origin of the spin torques responsible for this interaction and construct a phenomenological description. We then consider the electric current-induced ferromagnetic instability and domain-wall motion. Finally, we present a microscopic justification of the phenomenological description of current-driven magnetization dynamics, with particular emphasis on the dissipative terms, the so-called Gilbert damping $α$ and the $β$ component of the adiabatic current-driven torque.
description: 25 pages, 2 figures. Will appear in "Current Perspectives" on spin-transfer torque phenomena (edited by Dan Ralph and Mark Stiles), to be published in Journal of Magnetism and Magnetic Materials
title: Volksrepublik China: Popularisierung von Archäologie und Kulturerbe
Creators: name: Wertmann, Patrick
Publisher: name: Deutsches Archäologisches Institut
Year: 2017

description: e-Forschungsberichte, Faszikel 3 (2015)
description: In recent years, financial power, political drive and educational objectives are strongly reflected in China in the construction of new museums and the popularization of archaeological discoveries. Given the trading networks that extended over Asia and further beyond to Europe and Africa during the Han (206 BC – 220 AD) and Tang (618–907) dynasties, the cultural heritage from these periods is now widely celebrated and revived. Patrick Wertmann from the Beijing branch office investigates contents and goals of museums and popular scientific magazines as well as the use of new media aiming at disseminating the knowledge about cultural heritage in China.
title: Volksrepublik China: Bauwerke der Liao-Zeit (907–1125) – Struktur, Geschichte, Erhalt
Creators: name: Wagner, Mayke
name: Schulz-Brize, Thekla
name: Wulf-Rheidt, Ulrike
Publisher: name: Deutsches Archäologisches Institut
Year: 2017

description: e-Forschungsberichte, Faszikel 3 (2015)
description: The architecture of the empire Liao (907–1125) belongs to the oldest preserved wood constructions in China. The buildings embody valuable information on the development of the classical Chinese sacral architecture. They also contain sculptures and wall paintings of extraordinary importance. The Chinese Academy of Cultural Heritage already documented and restored one of the most famous temples, the Dule Temple, located between Peking and Tianjin. To make this authentic medieval building complex known in Germany is one of the concerns of the Beijing Branch of the German Archaeological Institute. In the Fengguo Temple complex in Liaoning Province measures of restoration and preservation of the unique wood construction and wall paintings are urgently needed. On invitation of the local heritage protection authorities the team visited the Fengguo Temple and jointly developed a tentative work plan.
Structure and metamorphism north of Quesnel Lake and east of Niagara Creek, Cariboo Mountains, British Columbia
Creators: name: Engi, Jill Ellen
Publisher: name: University of British Columbia
Year: 2010

description: An area of 15 km², located on the northeastern boundary of the Shuswap Metamorphic Complex, was mapped at a scale of 1:20,000 during the summer of 1983. A sequence of deformation and metamorphic events has been established based on petrography, structural analysis, geothermometry, and geobarometry. Four phases of deformation and related metamorphism have been recognized. Phase 1 deformation is preserved primarily as a metamorphic foliation. Rarely, isoclinal phase 1 folds of bedding were observed. Metamorphic conditions associated with this early period are not known. The major structures in the map area are second phase folds. These trend and plunge to the northwest and are southwestwardly verging. Minerals which crystallized during the main metamorphic event are syn- and post-kinematic to second phase structures. Garnet-biotite geothermometry yields temperatures of about 505°C in the kyanite-staurolite zone and - 580°C in the sillimanite zone, both at pressures of 5.0±.5 kbar. Geobarometry was based on the assemblage garnet-rutilealuminosilicate-ilmenite . Associated with phase 2 folding is movement along low-angle reverse faults, which disrupt both stratigraphy and established metamorphic zones. These faults are sheared horizons, distinguished by high strain fabrics, with extensive recrystallization. In one shear zone, garnet and biotite temperatures are systematically reset and indicate higher temperatures than in surrounding rocks. Further evidence of shear-heating includes an anomalous occurrence of sillimanite in this shear zone. Phase 3 deformation has produced upright, northerly-trending folds which post-date both metamorphic peak and reverse faulting. Third phase folds are broad and open. They are expressed strongly only at deeper structural levels. Mineral assemblages of lower greenschist facies were established prior to phase 4 deformation, and may pre-date phase 3 folds. Relatively high-angle faults disrupt phase 3 structures. In particular, the boundary of the Shuswap Metamorphic Complex, as defined by the establishment of the sillimanite zone (Reesor, 1970), is separated from adjacent kyanite-staurolite rocks to the north by such a fault. Geothermometry and geobarometry delineate a consistent temperature discontinuity of approximately 75°C across that fault. In addition to the faults, phase 4 kink folds are locally developed throughout the area.
title: Yeha, Äthiopien: Die Restaurierungsarbeiten am Monumentalbau Grat Beʿal Gebri
Creators: name: Schnelle, Mike
Publisher: name: Deutsches Archäologisches Institut
Year: 2017

description: e-Forschungsberichte, Faszikel 3 (2015)
description: Since 2009 the monumental building named Grat Beʿal Gebri has been investigated and restored concurrently in a cooperation project between local authorities and the Sanaa Branch of the DAI. The complex dates to around 800 BC and is therefore the oldest preserved timber-frame structure in Eastern Africa and the greatest roofed timber-frame structure in South Arabia and Eastern Africa. The restoration work and the protection of the building include capacity building measures involving local workers. In 2014 the restoration and protection work focused on the roofing of the south-western part of the structure using scaffold elements, on the restoration of timberframe walls and of an entrance, on the protection of wall copings and on the anastylosis of a part of the outer façade.
title: Yeha, Äthiopien: Forschungen zur Paläoumwelt und Ressourcennutzung
Creators: name: Gerlach, Iris
name: Weiß, Christian
Publisher: name: Deutsches Archäologisches Institut
Year: 2017

description: e-Forschungsberichte, Faszikel 3 (2015)
description: The GeoZentrum Nordbayern, Fachgruppe Paläoumwelt of the University of Erlangen in cooperation with the DAI has conducted sedimentological and ecological investigations in Yeha and its surroundings. These studies are concerned with accumulations of fluvial sediments along recent wadis, which provide data on the climate history during the Holocene. In addition, research focused on the use of natural resources as well as the provenance of building materials employed in the monumental architecture in Yeha. In the case of the latter the wood used to build the palace-like Grat Beʿal Gebri stemmed from the juniper and African olive trees. The stones included phonolite and sandstone from the vicinity of Yeha, limestone quarried at Wuqro, located 80 km from Yeha, and slate from the region of Adua, some 30 km away.
Quantization of Prior Probabilities for Hypothesis Testing
Creators: name: Varshney, Kush R.
name: Varshney, Lav R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Information Theory (cs.IT)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Bayesian hypothesis testing is investigated when the prior probabilities of the hypotheses, taken as a random vector, are quantized. Nearest neighbor and centroid conditions are derived using mean Bayes risk error as a distortion measure for quantization. A high-resolution approximation to the distortion-rate function is also obtained. Human decision making in segregated populations is studied assuming Bayesian hypothesis testing with quantized priors.
Canonical matrices with entries integers modulo p
Creators: name: Yordzhev, Krasimir
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05B20, 15B36

description: The work considers an equivalence relation in the set of all $n\times m$ matrices with entries in the set $[p]=\{ 0,1,\ldots , p-1 \}$. In each element of the factor-set generated by this relation, we define the concept of canonical matrix, namely the minimal element with respect to the lexicographic order. We have found a necessary and sufficient condition for an arbitrary matrix with entries in the set $[p]$ to be canonical. For this purpose, the matrices are uniquely represented by ordered n-tuples of integers.
description: arXiv admin note: text overlap with arXiv:1604.02714
ADVANCING PEDAGOGICAL APPROACHES: LEVERAGING ARTIFICIAL INTELLIGENCE TECHNOLOGIES TO ENHANCE THE INTEGRATION OF ENGLISH AND LATIN LANGUAGE INSTRUCTIONAL METHODS
Creators: name: Djalilova, Zarnigor
Publisher: name: Zenodo
Year: 2023

description: This paper delves into the critical need to advance methodologies in the integrated instruction of English and Latin languages within higher medical education settings. Recognizing the complexities associated with teaching medical terminologies in both languages, the study proposes the integration of cutting-edge Artificial Intelligence (AI) technologies to elevate language instruction. The infusion of AI technologies seeks to customize learning experiences, offer adaptive assessments, and cultivate immersive language learning through the utilization of virtual reality applications. By exploring the convergence of language education and AI, this article envisions a future where medical students acquire advanced language proficiency, thereby contributing to the development of a more globally competent and comprehensive healthcare workforce.
title: Yeha, Äthiopien: Forschungen zu Migrationsprozessen am nördlichen Horn von Afrika
Creators: name: Gerlach, Iris
Publisher: name: Deutsches Archäologisches Institut
Year: 2017

description: e-Forschungsberichte, Faszikel 3 (2015)
description: Wandering movements and trade relations are traditionally viewed as basic factors for the transfer of culture and knowledge, the development of human populations and the emergence of new socio-cultural systems. With the beginning of the Sabaean migration to the northern Horn of Africa in the early 1st millennium BC cultural contacts between Sabaean immigrants and the indigenous population evolved. The manner and degree in which these contacts affected the participating groups and the results of these contacts are issues that are being investigated by the Ethiopian-German cooperation project. Comparison with models of migrations pertaining to historical times reveals that certain frequent mechanisms and movements can be presupposed for Sabaean migrations too, such as the composition of the emigrating groups, the motives for migration and the multiphased duration of these processes.
Geology, petrology and precious metal mineralization, Toodoggone River area, north-central British Columbia
Creators: name: Forster, Douglas Burton
Publisher: name: University of British Columbia
Year: 2010

description: The Toodoggone River area (NTS:94E) is approximately 300 km north of Smithers, in north-central British Columbia. Early Jurassic Toodoggone volcanics consisting of calc-alkaline, intermediate extrusive rocks have a thickness exceeding 1200 m. The oldest members of the suite are andesite flows with minor agglomerate and pumice breccia. Overlying the andesites are voluminous dacitic ash flows consisting of vitric ash to lapilli tuff, vitric-lithic ash tuff, and vitric-crystal ash tuff. All andesites are characterized by porphyritic textures and phenocrysts of plagioclase, hornblende, biotite and magnetite. Dacites are distinguished by vitroclastic and devitrification textures, fragments of pumice as well as crystals of quartz, sanidine, plagioclase, basaltic hornblende, magnetite and hematite. Andesites of the Hazelton Group have a thickness of 900 m and are similar to the andesites of the Toodoggone suite. Five distinct alteration styles identified within the region include: propy.litic, zeolitic, intermediate to advanced argillic, potassic and silicic facies. In the Toodoggone suite, with, increasing silica content CaO, P₂O₅, TiO₂, FeO(total), Al₂O₃, V, Zr decrease and K₂O increases. Element mobility during low grade metasomatism is indicated by the wide scatter of points in the Na₂O, MgO, Cr, Ni, Th, Sr, Rb and Nb variation diagrams. Brecciated and silicified veins act as host to gold and silver mineralization within Toodoggone, Hazelton and Takla volcanic flows and tuffs. Fluid inclusions from the Moosehorn and Mt. Graves prospectssuggest that ore-minerals formed at temperatures of between 232°C and 267°C, with fluid salinities of between 3.3 and 6.5 equivalent weight percent NaCl. Mineral deposits formed under lithostatic pressures at depths of between 115 m and 225 m. A self-sealed throttling model accounts for variations in salinity, temperature, depth of formation, alteration types, metal zonation as well as depositional mechanisms, and can be used as an exploration guide to hidden ore shoots.
Observation of strong electron dephasing in disordered Cu$_{93}$Ge$_4$Au$_3$ thin films
Creators: name: Huang, S. M.
name: Lee, T. C.
name: Akimoto, H.
name: Kono, K.
name: Lin, J. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report the observation of strong electron dephasing in a series of disordered Cu$_{93}$Ge$_4$Au$_3$ thin films. A very short electron dephasing time possessing very weak temperature dependence around 6 K, followed by an upturn with further decrease in temperature below 4 K, is found. The upturn is progressively more pronounced in more disordered samples. Moreover, a ln$T$ dependent, but high-magnetic-field-insensitive, resistance rise persisting from above 10 K down to 30 mK is observed in the films. These results suggest a nonmagnetic dephasing process which is stronger than any known mechanism and may originate from the coupling of conduction electrons to dynamic defects.
description: to appear in Phys. Rev. Lett
Crater Morphology of Primordial Black Hole Impacts
Creators: name: Yalinewich, Almog
name: Caplan, Matthew E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: In this work we propose a novel campaign for constraining relativistically compact MACHO dark matter, such as primordial black holes (PBHs), using the moon as a detector. PBHs of about $10^{19} \textrm{ g}$ to $10^{22} \textrm{ g}$ may be sufficiently abundant to have collided with the moon in the history of the solar system. We show that the crater profiles of a PBH collision differ from traditional impactors and may be detectable in high resolution lunar surface scans now available. Any candidates may serve as sites for in situ measurements to identify high pressure phases of matter which may have formed near the PBH during the encounter. While we primarily consider PBH dark matter, the discussion generalises to the entire family of MACHO candidates with relativistic compactness. Moreover, we focus on the Moon since it has been studied well, but the same principles can be applied to other rocky bodies in our solar system without an atmosphere.
title: Szólád, Ungarn: Auswertungsarbeiten am langobardenzeitlichen Gräberfeld: Katalogarbeiten, Genetik, Publikation und interdisziplinäre Arbeitstreffen
Creators: name: Winger, Daniel
name: von Freeden, Uta
name: Vida, Tivadar
Publisher: name: Deutsches Archäologisches Institut
Year: 2017

description: e-Forschungsberichte, Faszikel 1 (2016)
description: The Langobard cemetery of Szólád at Lake Balaton was unearthed in 2003 when opening up a motorway feeder from Szólád to the M7 motorway. After the initial find of a male burial the whole area was surveyed with geophysics uncovering further burials. Between 2005 and 2007 and in 2010 in different areas of the Szólad ridge research excavations were executed, focussing the Langobard cemetery, but also documenting Neolithic, Iron Age, Late Antiquity and Pannonian Avar structures. From the beginning the excavation design was interdisciplinary and oriented towards bio-archaeological analysis – that was still carried out in 2015.
Near linear time algorithm to detect community structures in large-scale networks
Creators: name: Raghavan, Usha Nandini
name: Albert, Reka
name: Kumara, Soundar
Publisher: name: arXiv
Year: 2007
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Community detection and analysis is an important methodology for understanding the organization of various real-world networks and has applications in problems as diverse as consensus formation in social communities or the identification of functional modules in biochemical networks. Currently used algorithms that identify the community structures in large-scale real-world networks require a priori information such as the number and sizes of communities or are computationally expensive. In this paper we investigate a simple label propagation algorithm that uses the network structure alone as its guide and requires neither optimization of a pre-defined objective function nor prior information about the communities. In our algorithm every node is initialized with a unique label and at every step each node adopts the label that most of its neighbors currently have. In this iterative process densely connected groups of nodes form a consensus on a unique label to form communities. We validate the algorithm by applying it to networks whose community structures are known. We also demonstrate that the algorithm takes an almost linear time and hence it is computationally less expensive than what was possible so far.
description: 12 pages, 9 figures
Comment on "Infrared freezing of Euclidean QCD observables"
Creators: name: Caprini, Irinel
name: Fischer, Jan
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recently, P. M. Brooks and C.J. Maxwell [Phys. Rev. D{\bf 74} 065012 (2006)] claimed that the Landau pole of the one-loop coupling at $Q^2=Λ^2$ is absent from the leading one-chain term in a skeleton expansion of the Euclidean Adler ${\cal D}$ function. Moreover, in this approximation one has continuity along the Euclidean axis and a smooth infrared freezing, properties known to be satisfied by the "true" Adler function. We show that crucial in the derivation of these results is the use of a modified Borel summation, which leads simultaneously to the loss of another fundamental property of the true Adler function: the analyticity implied by the Källen-Lehmann representation.
Quantum self-bound droplets in Bose-Bose mixtures: Effects of higher-order quantum and thermal fluctuations
Creators: name: Guebli, Nadia
name: Boudjemaa, Abdelaali
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We systematically study the effects of higher-order quantum and thermal fluctuations on the stabilization of self-bound droplets in Bose mixtures employing the time-dependent Hartree-Fock-Bogoliubov theory. We calculate the ground-state energy, the droplet equilibrium density, the depletion and anomalous density of the droplets as well as the critical temperature as a function of the relevant parameters. Our findings are compared with previous analytical predictions and diffusion Monte Carlo simulations. We employ our theory together with the local density approximation for quantum and thermal fluctuations to obtain an extended finite-temperature Gross-Pitaevskii equation. The density profiles and breathing modes of the droplet are deeply examined in terms of the interaction strength and the temperature by numerically solving the developed generalized Gross-Pitaevskii equation.
description: 8 pages, 7 figures
title: Sárköz, Südungarn: Das Neolithikum in Transdanubien
Creators: name: Bánffy, Eszter
name: Rassmann, Knut
Publisher: name: Deutsches Archäologisches Institut
Year: 2017

description: e-Forschungsberichte, Faszikel 1 (2016)
description: Since 2011 the Romano-Germanic Commission (RGK) engages in geomagnetic prospections on Hungarian multi-period settlements. Our study began with fieldwork at the Alsónyék-Bátaszék and Tolna-Mözs sites. In die following years we continued the survey on both sites, enlarging the program on the tell settlement of Fajsz-Kovácshalom and on other sites in eastern Hungary. Our main goal is to discuss the combination of excavation data and geomagnetics which provides a great opportunity to estimate the size of the settlements as well as to study their internal structures. The report focuses on the Alsónyék-Bátaszék and Tolna-Mözs site where numerous settlement remains and a large number of Late Neolithic burials were unearthed. Excellent prerequisites for prospection campaigns include rich comparative excavation data which are useful for understanding and interpreting geomagnetic anomalies from the unexcavated areas.
Axion assisted Schwinger effect
Creators: name: Domcke, Valerie
name: Ema, Yohei
name: Mukaida, Kyohei
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2021
Subjects: * Automatic Keywords *
axion: dark matter
fermion: mass
fermion: spin
electric field: high
anomaly: chiral
enhancement
cosmological model
background field
time dependence
pair production
magnetic field
transverse
inflation
velocity
rotation

description: We point out an enhancement of the pair production rate of charged fermions in a strong electric field in the presence of time dependent classical axion-like background field, which we call axion assisted Schwinger effect. While the standard Schwinger production rate is proportional to $\exp(-\pi(m^2+p_T^2 )/E)$, with $m$ and $p_T$ denoting the fermion mass and its momentum transverse to the electric field $E$, the axion assisted Schwinger effect can be enhanced at large momenta to $\exp(-\pi m^2/E)$. The origin of this enhancement is a coupling between the fermion spin and its momentum, induced by the axion velocity. As a non-trivial validation of our result, we show its invariance under field redefinitions associated with a chiral rotation and successfully reproduce the chiral anomaly equation in the presence of helical electric and magnetic fields. We comment on implications of this result for axion cosmology, focussing on axion inflation and axion dark matter detection.
title: Alsónyék-Bátaszék, Ungarn: Der größte neolithische Fundort in Mitteleuropa
Creators: name: Bánffy, Eszter
Publisher: name: Deutsches Archäologisches Institut
Year: 2017

description: e-Forschungsberichte, Faszikel 1 (2016)
description: The Neolithic site Alsónyék-Bátaszék in the Carpathian Basin in Hungary was uncovered from 2006 to 2009 during rescue excavations. Within about 25 ha of ground 15.000 archaeological features were excavated of which 70% belong to settlements from almost all Neolithic periods (Starčevo, Linearbandkeramik [LBK], Sopot, Lengyel) and 2500 burials could be secured. Altogether they represent one of the largest known Neolithic sites in Europe as well as a valuable source for the research of contacts between the earliest farmers’ communities of the Southeast and the Northwest. The multidisciplinary analysis of this important site currently takes place under lead management of the Hungarian Academy of Sciences Budapest and the Romano-Germanic Commission.
Gopakumar-Vafa Hierarchies in Winding Inflation and Uplifts
Creators: name: Carta, Federico
name: Mininno, Alessandro
name: Righi, Nicole
name: Westphal, Alexander
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2021
Subjects: * Automatic Keywords *
potential: scalar
Calabi-Yau
hierarchy
data management
inflation
structure
de Sitter
moduli

description: We propose a combined mechanism to realize both winding inflation and de Sitter uplifts. We realize the necessary structure of competing terms in the scalar potential not via tuning the vacuum expectation values of the complex structure moduli, but by a hierarchy of the Gopakumar-Vafa invariants of the underlying Calabi-Yau threefold. To show that Calabi-Yau threefolds with the prescribed hierarchy actually exist, we explicitly create a database of all the genus $0$ Gopakumar-Vafa invariants up to total degree $10$ for all the complete intersection Calabi-Yau's up to Picard number $9$. As a side product, we also identify all the redundancies present in the CICY list, up to Picard number $13$. Both databases can be accessed at this link: https://www.desy.de/~westphal/GV_CICY_webpage/GVInvariants.html .
An Experimental Study on Performance Desalination of Solar Still with Sunray-Reflecting Sheets
Creators: name: Jaruwat Jareanjit
name: Banyat Niyomvas
Publisher: name: Faculty of Engineering, Khon Kaen Univeristy
Year: 2011
Subjects: solar stills, solar energy, desalination, distillation performance

description: 4, 38, KKU Engineering Journal
NICMOS Observations of Shocked H_2 in Orion
Creators: name: Colgan, Sean W. J.
name: Schultz, A. S. B.
name: Kaufman, M. J.
name: Erickson, E. F.
name: Hollenbach, D. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: HST NICMOS narrowband images of the shocked molecular hydrogen emission in OMC-1 are analyzed to reveal new information on the BN/KL outflow. The outstanding morphological feature of this region is the array of molecular hydrogen ``fingers'' emanating from the general vicinity of IRc2 and the presence of several Herbig-Haro objects. The NICMOS images appear to resolve individual shock fronts. This work is a more quantitative and detailed analysis of our data from a previous paper (Schultz etal. 1999). Line strengths for the H_2 1--0 S(4) plus 2--1 S(6) lines at 1.89 micron are estimated from measurements with the Paschen_alpha continuum filter F190N at 1.90 micron, and continuum measurements at 1.66 and 2.15 micron. We compare the observed H_2 line strengths and ratios of the 1.89 micron and 2.12 micron 1--0 S(1) lines with models for molecular cloud shock waves. Most of the data cannot be fit by J-shocks, but are well matched by C-shocks with shock velocities in the range of 20--45 km/s and preshock densities of 10^{4} - 10^{6} cm^{-3}, similiar to values obtained in larger beam studies which averaged over many shocks. There is also some evidence that shocks with higher densities have lower velocities.
description: 33 pages, 11 figures, 2 of those color
ADVANCING CRITICAL THINKING PROFICIENCY THROUGH OPTIMIZED PEDAGOGICAL APPROACHES
Creators: name: Djalilova, Zarnigor
Publisher: name: Zenodo
Year: 2023

description: This article delves into the pivotal role of questioning as an artful skill in pedagogy, exploring its profound impact on elevating critical thinking prowess in learners. By scrutinizing effective pedagogical methods, the research unveils the intricacies involved in crafting and presenting questions aimed at inspiring inquiry, fostering deeper comprehension, and nurturing the capacity for critical thought. Drawing on educational theories and practical insights, the paper provides a comprehensive examination of the art of questioning as a transformative pedagogical tool essential for cultivating the intellectual capabilities of students.
title: Aufbereitung des flüssigen Produkts der gemischten Alkohol Synthese
Creators: name: Kerschdorfer, Christian
Publisher: name: TU Wien
Year: 2018
Subjects: subject: Biomasse
subject: Synthesegas
subject: Gemischte Alkohole
subject: Biomass
subject: Synthesis gas
subject: Mixed alcohols

description: as entrainer. Additionally, a process simulation with ASPEN Plus is carried out, which aims to simulate a separating process with ethanol and propanol as main products. The separation of the propanol/water azeotrope is simulated as an azeotrope rectification with propylaceatate as entrainer, as well as a membrane rectification. By means of the program ASPEN Energy Analyzer, a pinch analysis is implemented for the purpose of finding the minimum heating demand for the separation process. With the ambition to demonstrate the distribution of the sulfur components, another simulation is carried out, by adding the sulfur components to the feed stream. The simulation clarifies, if a desulphurization of the alcohols is necessary and gives information about possible enrichments in the process. Furthermore, a fractionated condensation of the product gas stream from the MAS-reactor is simulated in three steps. The results of the simulation are compared to a single condensation and shows if an early reduction of the separation effort is possible.
description: This thesis aims to the separation of the product of the mixed-alcohol-synthesis (MAS). For the execution of the synthesis, purified product gas (syngas) from the biomass-steam-gasification plant in Güssing is used. A concrete focus is laid on the main components of the mixed alcohols, Methanol, Ethanol and Propanol. Furthermore, insights into the conventional production and possible uses are provided. Moreover, this thesis emphasizes the necessity of the purity and the market value of the stated components. For the purpose of reducing sulfur components from the alcohols, different approaches are given. With the intention to analyze the distribution of the products, as well as possible impurities, a lab scale fractionated rectification is conducted. To accomplish the target of fractions close to the azeotrope composition of the propanol/water mixture, a multiple fractionated rectification is executed. The mentioned fractions, close to the propanol/water azeotrope, are used to remove the water through azeotrope rectification with proylacetate 753i L
Three-photon productions within the $k_t$-factorization for the ATLAS-LHC data
Creators: name: Valeshabadi, R. Kord
name: Modarres, M.
name: Rezaie, S.
Publisher: name: arXiv
Year: 2021
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: Recently, the ATLAS data of isolated three-photon production showed that the next-to-leading order (NLO) collinear factorization is not enough to describe experimental data. Therefore, one needs to calculate the cross section beyond the NLO, and as showed later, these data can be well described by the NNLO calculation within the collinear factorization framework. However, it is shown that the $k_t$-factorization can be quite successful in describing exclusive and high energy collision processes, henceforth we decided to calculate isolated three-photon production within this framework. In this work we use the Martin, Ryskin, and Watt unintegrated parton distribution functions (MRW UPDFs) at LO and NLO levels, in addition to parton branching (PB) UPDFs in order to calculate cross section which we utilize the KATIE parton level event generator. It will be shown that in contrast to collinear factorization, the $k_t$-factorization can describe quiet well the three-photon production ATLAS data. Interestingly our results using the NLO-MRW and PB UPDFs can cover the data within their uncertainty bands, similar to the NNLO collinear results.
title: Tavşan Adası, T ürkei: Die Arbeiten des Jahres 2012
Creators: name: Bertemes, François
Publisher: name: Deutsches Archäologisches Institut
Year: 2017

description: e-Forschungsberichte, Faszikel 1 (2016)
description: Tavşan Adası lies north of Panormos, the ancient harbour of Didyma, in western Turkey. It represents the head of a former headland that connected the island with the Turkish mainland 200 m afar. Since 2006, systematic excavations are carried out by the Martin-Luther-University Halle-Wittenberg. The main target of our fieldwork is to explore an important trading settlement from the first half of the 2nd millennium BC equipped with two natural harbours. Typical “Minoan” finds and complex architectural remains are deeply influenced by those in Crete and the Cyclades. Many imports from the southern and the eastern Aegean as well as their local imitations allow us to throw light upon the role of the Carian Coast within the Minoan communications network. In conjunction with the results from Miletus and Iasos we will thus be able to clarify its economic and cultural role in the 2nd millennium BC.
A quantitative analysis of some vein-type mineral deposits in southern British Columbia
Creators: name: Goldsmith, Locke B.
Publisher: name: University of British Columbia
Year: 2010

description: Production and location data for polymetallic vein deposits in four mining camps in southern British Columbia (Ainsworth, Slocan, Slocan City and Trout Lake camps) illustrate the potential of such data for comparing mining camps in a rigorous manner and as a basis for developing quantitative exploration models. Spatial densities of mineral deposit occurrences serve both to define clusters of deposits and to demarcate mining camps. This latter application results in a reproducible, rigorous approach to comparing metal endowment of several mining camps. Detailed analysis of production and location data for the Trout Lake camp demonstrate the importance of size and grade in developing a quantitative exploration model for the camp. Production tonnages define two different size populations of deposits. Average silver grades of veins indicate four separate groupings that correspond clearly with specific geological characteristics of the groups. A correlation and regression study demonstrates the importance of the procedure in evaluating size potential of deposits and, in particular, illustrates the importance of gold grades in determining size potential of prospects in the camp. A review of multiple regression applied to quantitative modelling of deposit size potential in five vein camps in southern British Columbia shows the method to have practical application in vein deposit evaluation during progressive exploration of a deposit.
An iterative coordinate descent algorithm to compute sparse low-rank approximations
Creators: name: Rusu, Cristian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Data Structures and Algorithms (cs.DS)
subject: Numerical Analysis (math.NA)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper, we describe a new algorithm to build a few sparse principal components from a given data matrix. Our approach does not explicitly create the covariance matrix of the data and can be viewed as an extension of the Kogbetliantz algorithm to build an approximate singular value decomposition for a few principal components. We show the performance of the proposed algorithm to recover sparse principal components on various datasets from the literature and perform dimensionality reduction for classification applications.
title: Milet, Türkei: Die geometrische Keramik aus Altgrabungen. Publikation der Funde der Altgrabungen und Herkunftsbestimmung durch xRFA-Messungen
Creators: name: Krumme, Michael
Publisher: name: Deutsches Archäologisches Institut
Year: 2017

description: e-Forschungsberichte, Faszikel 1 (2016)
description: The project attempts to specify the development of Miletus ceramics in the Early Iron Age (ca 1050–700 BC). At least for the Protogeometric period, Attic and other productions were certainly known in Miletus. It seems that the city was open to both the Aegean and the mainland of Asia Minor, and may have been one of several mediators for the hinterland. As for Late Geometric it is clear that a number of shape variations cohered to a conservative tradition, and that seems to apply to the hinterland as well. It is not until Late Geometric that ‚production increases, a development that can be observed in Karia as well. During the 2015 campaign archaeometrical research using a portable XRF handheld was carried out.
Regulating Aggregation of Colloidal Particles in an Electro-Osmotic Micropump
Creators: name: Zhang, Zhu
name: de Graaf, Joost
name: Faez, Sanli
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Chemical Physics (physics.chem-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Unrestricted particle transport through microfluidic channels is of paramount importance to a wide range of applications, including lab-on-a-chip devices. In this article, we study using video microscopy the electro-osmotic aggregation of colloidal particles at the opening of a micrometer-sized silica channel in presence of a salt gradient. Particle aggregation eventually leads to clogging of the channel, which may be undone by a time-adjusted reversal of the applied electric potential. We numerically model our system via the Stokes-Poisson-Nernst-Planck equations in a geometry that approximates the real sample. This allows us to identify the transport processes induced by the electric field and salt gradient and to provide evidence that a balance thereof leads to aggregation. We further demonstrate experimentally that a net flow of colloids through the channel may be achieved by applying a square-waveform electric potential with an appropriately tuned duty cycle. Our results serve to guide the design of microfluidic and nanofluidic pumps that allow for controlled particle transport and provide new insights for anti-fouling in ultra-filtration.
description: 9 pages, 7 figures
title: Milet, Türkei: Aufarbeitung griechischer Terrakotten und Keramikfunde
Creators: name: Bîrzescu, Iulian
name: Kowalleck, Ireen
name: Özcan, Fikret
name: Schlotzhauer, Udo
Publisher: name: Deutsches Archäologisches Institut
Year: 2017

description: e-Forschungsberichte, Faszikel 1 (2016)
description: Miletus was a leading Greek harbour city on the west coast of Asia Minor. Recent excavations of ancient living quarters, workshops, and sanctuaries have turned up hundreds of thousands of ceramic sherds and terracotta fragments, among them Archaic mugs, plates, and amphorae, Classic table ware, and Classic to Hellenistic terracotta figurines, painted and unpainted. Their analysis sheds light on the local workshop structure and the tradition of vase painting, on overseas trade and commerce within the East Mediterranean and with colonies in the Black Sea, in Italy and North Africa colonies and with Athens, on how Miletus recovered from the Persian conquest in 494 BC, and on different cultic practices at the various sanctuaries.
Nickel-based layered superconductor, LaNiOAs
Creators: name: Watanabe, Takumi
name: Yanagi, Hiroshi
name: Kamihara, Yoichi
name: Kamiya, Toshio
name: Hirano, Masahiro
name: Hosono, Hideo
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Rietveld analysis of the powder X-ray diffraction of a new layered oxyarsenide, LaNiOAs, which was synthesized by solid-state reactions, revealed that LaNiOAs belongs to the tetragonal ZrCuSiAs-type structure (P4/nmm) and is composed of alternating stacks of La-O and Ni-As layers. The electrical and magnetic measurements demonstrated that LaNiOAs exhibits a superconducting transition at 2.4 K, and above this, LaNiOAs shows metallic conduction and Pauli paramagnetism. The diamagnetic susceptibility measured at 1.8 K corresponded to ~20% of perfect diamagnetic susceptibility, substantiating that LaNiOAs is a bulk superconductor.
description: 11 pages, 4 figures, Journal of Solid State Chemistry, in press. Received 18 March 2008. Accepted 29 April 2008. Available online 8 May 2008
Generalized list completer
Creators: name: Van Burgsteden, Lotte
Publisher: name: OSF
Year: 2022
Subjects: Conversation Analysis
Encyclopedia
Ethnomethodology
Interactional Linguistics

description: A generalized list completer is a linguistic device used in the construction of lists, where the final item in the list is semantically broad or imprecise (e.g., “or something”, “and things like that”, “and so on”).
Weierstrass Representations of Lorentzian Minimal Surfaces in $\mathbb R^4_2$
Creators: name: Kassabov, Ognian
name: Milousheva, Velichka
Publisher: name: arXiv
Year: 2021
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53B30, 53A10, 53A35

description: The minimal Lorentzian surfaces in $\mathbb{R}^4_2$ whose first normal space is two-dimensional and whose Gauss curvature $K$ and normal curvature $\varkappa$ satisfy $K^2-\varkappa^2 >0$ are called minimal Lorentzian surfaces of general type. These surfaces admit canonical parameters and with respect to such parameters are determined uniquely up to a motion in $\mathbb{R}^4_2$ by the curvatures $K$ and $\varkappa$ satisfying a system of two natural PDEs. In the present paper we study minimal Lorentzian surfaces in $\mathbb{R}^4_2$ and find a Weierstrass representation with respect to isothermal parameters of any minimal surface with two-dimensional first normal space. We also obtain a Weierstrass representation with respect to canonical parameters of any minimal Lorentzian surface of general type and solve explicitly the system of natural PDEs expressing any solution to this system by means of four real functions of one variable.
description: 12 pages
Spin-wave mediated quantum corrections to the conductivity in thin ferromagnetic gadolinium films
Creators: name: Misra, R.
name: Hebard, A. F.
name: Muttalib, K. A.
name: Wolfle, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We present a study of quantum corrections to the conductivity of thin ferromagnetic gadolinium films. In situ magneto-transport measurements were performed on a series of thin films with thickness d < 135A. For sheet resistances R0 < 4011 Ohm and temperatures T < 30K, we observe a linear temperature dependence of the conductivity in addition to the logarithmic temperature dependence expected from well known quantum corrections in two dimensions. We show that such a linear T-dependence can arise from a spin-wave mediated Altshuler-Aronov type correction.
description: 4 pages, 3 figures, 1 table
title: Kırklarelİ, Türkei: Ausgrabungen in der neolithischen Siedlung Aşaǧı Pınar
Creators: name: Hansen, Svend
name: Özdoǧan, Mehmet
name: Özdoǧan, Eylem
name: Schwarzberg, Heiner
name: Parzinger, Herrmann
Publisher: name: Deutsches Archäologisches Institut
Year: 2017

description: e-Forschungsberichte, Faszikel 1 (2016)
description: The emergence of a new way of living in permanent settlements based on farming, conventionally addressed as the “Neolithic Revolution”, has been one of the most significant turning points in the history of civilization, with time leading to the emergence of more complex socio-economic models. The modalities of this new way of living, after having its initial evolutionary stages in certain parts of the Near East, from the beginning 7th Millennium on began dispersing to other region, thus becoming a global model. In this respect, the quest to find answers to questions when, how and why farming appeared in Europe has always been a matter of controversy. To find answers to these questions excavation at the Neolithic site of Aşağı Pınar, located in Eastern Thrace, the main contact zone of Anatolia with South-eastern Europe. Excavations at Aşağı Pınar have revealed an uninterrupted cultural sequence from c. 6200 to 4900 BC, from the time when the first farmers arrived in Thrace to its full adaptation to local environmental conditions. Aşağı Pınar became not only the key site for the chronology of the Karanovo I to IV sequence in Thrace but has made it possible to discern issues such as settlement organisation, social structuring and subsistence. Since 2010 two ditches could be excavated on a distance of 140 metres. Both ditches have no obvious functions like defense, water supply or working place. Recent observations not only in Aşağı Pınar but also in other Neolithic sites suggest to interpret ditch digging as a cultural phenomenon.
Lower Mass Bounds on FIMPs
Creators: name: D'Eramo, Francesco
name: Lenoci, Alessandro
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2021
Subjects: * Automatic Keywords *
particle: massive
matter: power spectrum
temperature: high
dark matter
thermal
renormalizable
suppression
phase space
scattering
structure
binary

description: Feebly Interacting Massive Particles (FIMPs) are dark matter candidates that never thermalize in the early universe and whose production takes place via decays and/or scatterings of thermal bath particles. If FIMPs interactions with the thermal bath are renormalizable, a scenario which is known as freeze-in, production is most efficient at temperatures around the mass of the bath particles and insensitive to unknown physics at high temperatures. Working in a model-independent fashion, we consider three different production mechanisms: two-body decays, three-body decays, and binary collisions. We compute the FIMP phase space distribution and matter power spectrum, and we investigate the suppression of cosmological structures at small scales. Our results are lower bounds on the FIMP mass. Finally, we study how to relax these constraints in scenarios where FIMPs provide a sub-dominant dark matter component.