cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The role of electron-hole recombination in organic magnetoresistance
Creators: name: Majumdar, Sayani
name: Majumdar, Himadri S
name: Aarnio, Harri
name: Vanderzande, Dirk
name: Laiho, Reino
name: Osterbacka, Ronald
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Magneto-electrical measurements were performed on diodes and bulk heterojunction solar cells (BHSCs) to clarify the role of formation of coulombically bound electron-hole (e-h) pairs on the magnetoresistance (MR) response in organic thin film devices. BHSCs are suitable model systems because they effectively quench excitons but the probability of forming e-h pairs in them can be tuned over orders of magnitude by the choice of material and solvent in the blend. We have systematically varied the e-h recombination coefficients, which are directly proportional to the probability for the charge carriers to meet in space, and found that a reduced probability of electrons and holes meeting in space lead to disappearance of the MR. Our results clearly show that MR is a direct consequence of e-h pair formation. We also found that the MR line shape follows a power law-dependence of B0.5 at higher fields.
Suzaku Observations of Active Galactic Nuclei Detected in the Swift/BAT Survey: Discovery of "New Type" of Buried Supermassive Black Holes
Creators: name: Ueda, Yoshihiro
name: Eguchi, Satoshi
name: Terashima, Yuichi
name: Mushotzky, Richard
name: Tueller, Jack
name: Markwardt, Craig
name: Gehrels, Neil
name: Hashimoto, Yasuhiro
name: Potter, Stephen
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the Suzaku broad band observations of two AGNs detected by the Swift/BAT hard X-ray (>15 keV) survey that did not have previous X-ray data, Swift J0601.9-8636 and Swift J0138.6-4001. The Suzaku spectra reveals in both objects a heavily absorbed power law component with a column density of NH =~ 10^{23.5-24} cm^{-2} that dominates above 10 keV, and an intense reflection component with a solid angle >~ $2π$ from a cold, optically thick medium. We find that these AGNs have an extremely small fraction of scattered light from the nucleus,
description: 4 pages, 3 figures, accepted for publication in ApJ Letter
K-H_2 Quasi-molecular absorption detected in the T-dwarf epsilon Indi Ba
Creators: name: Allard, France
name: Allard, Nicole F.
name: Homeier, Derek
name: Kielkopf, John
name: McCaughrean, Mark J.
name: Spiegelman, Fernand
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: T-type dwarfs present a broad and shallow absorption feature centred around 6950 A in the blue wing of the K doublet at 0.77 micron which resembles in depth and shape the satellite absorption predicted by detailed collisional broadening profiles. In our previous work, the predicted line satellite position was however somewhat too blue compared to the observed feature. In this paper we investigate whether new calculations of the energy surfaces of the potentials in the K-H_2 system, including spin-orbit coupling, result in a closer coincidence of the satellite with the observed position. We also investigate the extent to which CaH absorption bands contribute to the feature. We present model atmospheres and synthetic spectra, including gravitational settling for an improved description of depth-dependent abundances of refractory elements, and based on new K-H_2 line profiles using improved interaction potentials. By comparison with a high signal-to-noise optical spectrum of the T1 dwarf epsilon Indi Ba, we find that these new models do reproduce the observed feature, while CaH does not contribute for the atmospheric parameters considered. We also find that CaH is settled out so deep into the atmosphere that even turbulent vertical mixing would appear insufficient to bring significant amounts of CaH to the photosphere in dwarfs later than ~L5. We conclude that previous identification of the feature at this location in T and late L dwarf spectra with CaH was erroneous, as expected on physical grounds: calcium condenses onto grains in early L dwarfs and thus should have settled out of the photosphere in cooler brown dwarfs. This finding revokes one observational verification for the cloud-clearing theory: a gradual clearing of the cloud cover in early T dwarfs.
description: accepted for publication by Astronomy & Astrophysics Letters, 4 pages, 3 colour figures
Hindered settling of charged and uncharged submicron spheres
Creators: name: Tackie, Emmanuel Nii
Publisher: name: University of British Columbia
Year: 2010

description: The effect of surface charges on the hindered settling of colloidal particles was studied using chemically precipitated mono-dispersed 0.6-micron silica spheres. Settling rates were measured in tubes of 11 mm inside diameter containing distilled and deionised water that had been adjusted with sodium hydroxide to alter the zeta potentials on the particles, with sodium chloride to alter the non-dimensional electrokinetic radius and with hydrochloric acid to suppress electrostatic interactions between the particles at a pH of about 3, which is close to the iso-electric point of the silica spheres. The particles were dispersed by means of a Brinkman homogeniser and the zeta potentials were measured by the method of micro-electrophoresis. The volume fraction c of particles in the dispersions was varied from 0.005 to 0.26, while the zeta potential and the non-dimensional electrokinetic radius were progressively raised to as high as -81 millivolts and 240, respectively. The settling rates measured for various combinations of particle concentration c, zeta potential ξ and electrokinetic radius were virtually in all cases lower than for the uncharged spheres, thus attesting qualitatively to the retarding effect of the Dorn potentials and throwing some light on anomalous sedimentation results for fine particles in the literature. The experimental data for the uncharged spheres were compared with models in the literature for sedimentation of fine particles and found to fall between the theoretical prediction of Batchelor for dilute dispersions and that of Stauffer and Clavin for more concentrated dispersions. However, comparison of the settling data for the charged spheres with the theory of Levine et al. on the retarding effect of the Dorn potentials in concentrated dispersions showed this very restrictive theory to be quite inadequate to the present data.
Macroscopic features of quantum fluctuations in large N qubit system
Creators: name: Klimov, Andrei B.
name: Munoz, Carlos
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce a discrete Q-function of N qubit system projected into the space of symmetric measurements as a tool for analyzing general properties of quantum systems in the macroscopic limit. For known states the projected Q-function helps to visualize the results of collective measurements, and for unknown states it can be approximately reconstructed by measuring lowest moments of the of collective variables.
description: 9 pages, 5 figures
Upgrade of the PHELIX Target Area
Creators: name: Zielbauer, B.
name: Brabetz, C.
name: Fehrenbacher, G.
name: Götte, S.
name: Kewes, P.
name: Kunzer, S.
name: Reemts, D.
name: Stöhlker, T.
name: Tymura, L.
name: Wagner, F.
name: Bagnoud, V.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2014
Subjects: Physics

description: GSI Scientific Report 2013 - GSI Report 2014-1
Hard exclusive processes with photons
Creators: name: Pire, B.
name: Szymanowski, L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Virtual photons have proven to be very efficient probes of the hadronic structure, mostly through deep inelastic scattering and related processes. The advent of high luminosity lepton beams has allowed to enlarge the studied processes to hard exclusive reactions, such as deeply virtual Compton scattering and the electroproduction of mesons. We discuss theoretical progress which has lately been quite remarkable in this domain and first much encouraging experimental data.
description: 3 pages, to be published in the proceedings of the International Conference on the Structure and Interactions of the Photon (Photon 2007) Paris, july 2007
title: Affordance and constraint: how Japanese EFL learners enact and enhance agency in a self-directed language learning unit
Creators: name: Rowberry, Jonathan
Publisher: name: University of Reading
Year: 2025

description: Despite recent interest in the construct of language learner agency, our understanding of 
the dynamic interplay between learners, instructors, technologies, activities, and resources 
through which agency emerges remains limited. This project investigated a study unit 
(SDLU) targeting self-directed language learning at a Japanese university. Operating at the 
intersection of classroom-based instruction and language learning beyond the classroom 
(LLBC), SDLU provided a fertile environment for examining conditions that facilitate or 
constrain agency. 
Conducted as a practitioner research case study of 14 learners, the investigation drew on 
multiple sources of data including observation, a teacher journal, learners’ written 
reflections, and stimulated recall interviews. Agency was operationalised in terms of how 
learners aligned their learning behaviours with their feelings, beliefs, and volitions as they 
interacted with SDLU. The study aimed to uncover the processes through which this 
alignment occurred, or failed to occur, and thereby the extent to which agency was stifled 
or enhanced for particular learners. Data were investigated through thematic content 
analysis, employing both inductive and deductive coding. Five overarching themes – feeling,
exploring, reflecting, regulating, and relating – emerged as pivotal in shaping participants’ agency. 
Although the intricate interplay between these themes in individual cases highlighted the 
complexity of the agency construct, relating was particularly associated with agency 
enhancement. For example, learners who prioritised using English for real-world purposes 
were more likely to engage in LLBC than those who focused on studying the language 
itself. While the former uncovered multiple learning affordances and reported positive 
emotions in relation to language learning, the latter often seemed unable to move beyond 
methodologies internalised at school which were poorly suited to their learning objectives. 
The findings have important implications regarding strategies for enhancing language 
learner agency and support recent claims that agency may best be characterised as relational 
rather than individual in nature.
title: TeTe Wo Bi Kyere: lessons from Akan indigenous entrepreneurship in the modern Ghanaian economy
Creators: name: Apaw, Edwina
Publisher: name: University of Reading
Year: 2025

description: The Akan are a cluster of ethnic groups in West Africa. Some are indigenous entrepreneurs that are 
thriving in Ghana’s modern economy. In contrast, Ghana has a growing youth unemployment 
challenge. In recent years much research has been conducted globally in indigenous knowledge 
systems, however there is little focus on individual ethnic groups and their entrepreneurial 
knowledge. Africa as the second largest continent with the highest number of entrepreneurs, 
consists of hundreds of ethnic groups, languages, and cultures, each with its own indigenous 
knowledge systems. This empirical, qualitative study aimed to explore the Akan indigenous 
entrepreneurship knowledge systems (AIEKS) as a viable pathway to youth employment. Can AIEKS 
be used to drive successful businesses within the modern Ghanaian economy? Key objectives 
included the identification, use and possible future applications of AIEKS. My thesis research 
identified nine Akan indigenous entrepreneurs operating in farming, construction, publishing, 
fashion design, herbal medicine, and soap manufacturing. The methodology was empirical within 
an interpretivism theoretical perspective, utilizing qualitative case studies of the nine indigenous 
Akan entrepreneurs. In-depth semi-structured interviews were conducted on their business 
premises providing opportunities for observation of the products. Thematic analysis was used to 
identify common themes in the data. Some major themes emerging included 1) indigenous 
entrepreneurship education and educators, 2) business skills, 3) indigenous financial strategies, 4) 
knowledge intersections 5) resilience, and 6) government intervention. The study found the 
entrepreneurs received indigenous education through family members, community experts and the 
wider community. The indigenous education was flexible but structured into four main phases. 
Students started at age six and graduated at age sixteen to twenty years, with significant business 
skills to commence their own businesses. Many innovative financial strategies that lowered the 
vbarriers of entry into entrepreneurship for financially disadvantaged youth were identified. The 
study proposes the integration of Akan indigenous entrepreneurship education into the formal 
educational system at primary and secondary level to ensure that all secondary school students 
graduate with an entrepreneurial mindset and the business skills needed to start their own 
businesses.
Great Britain Ministry of Information – Daily Press Notices and Bulletins (1944-05-08)
Creators: name: Great Britain. Ministry Of Information.
Publisher: name: The University of Texas at Austin
Year: 1944
Subjects: World War, 1939-1945 – Social aspects
World War, 1939-1945 -- History
World War II
Second World War
World War Two
Great Britain

description: From the UK National Archives: http://www.nationalarchives.gov.uk/theartofwar/inf3.htm “Formed on September 4th 1939, the day after Britain’s declaration of war, the Ministry of Information (MOI) was the central government department responsible for publicity and propaganda in the Second World War. The initial functions of the MOI were threefold: news and press censorship; home publicity; and oversees publicity in Allied and neutral countries”. This collection contains Press Notices and Bulletins published by the MOI between 1939-1945. The Press Notices and Bulletins are among many publications and films issued by the agency during the war.
Vector Precoding for Wireless MIMO Systems: A Replica Analysis
Creators: name: Mueller, Ralf R.
name: Guo, Dongning
name: Moustakas, Aris L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Information Theory (cs.IT)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We apply the replica method to analyze vector precoding, a method to reduce transmit power in antenna array communications. The analysis applies to a very general class of channel matrices. The statistics of the channel matrix enter the transmitted energy per symbol via its R-transform. We find that vector precoding performs much better for complex than for real alphabets. As a byproduct, we find a nonlinear precoding method with polynomial complexity that outperforms NP-hard Tomlinson-Harashima precoding for binary modulation on complex channels if the number of transmit antennas is slightly larger than twice the number of receive antennas.
description: 21 pages, 8 figures, submitted for publication to "IEEE JSAC Special Issue on Multiuser Detection for Advanced Communication Systems and Networks"
Great Britain Ministry of Information – Daily Press Notices and Bulletins (1944-05-09)
Creators: name: Great Britain. Ministry Of Information.
Publisher: name: The University of Texas at Austin
Year: 1944
Subjects: World War, 1939-1945 – Social aspects
World War, 1939-1945 -- History
World War II
Second World War
World War Two
Great Britain

description: From the UK National Archives: http://www.nationalarchives.gov.uk/theartofwar/inf3.htm “Formed on September 4th 1939, the day after Britain’s declaration of war, the Ministry of Information (MOI) was the central government department responsible for publicity and propaganda in the Second World War. The initial functions of the MOI were threefold: news and press censorship; home publicity; and oversees publicity in Allied and neutral countries”. This collection contains Press Notices and Bulletins published by the MOI between 1939-1945. The Press Notices and Bulletins are among many publications and films issued by the agency during the war.
Nonlinear diffusion from Einstein's master equation
Creators: name: Boon, J. P.
name: Lutsko, J. F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We generalize Einstein's master equation for random walk processes by considering that the probability for a particle at position $r$ to make a jump of length $j$ lattice sites, $P_j(r)$ is a functional of the particle distribution function $f(r,t)$. By multiscale expansion, we obtain a generalized advection-diffusion equation. We show that the power law $P_j(r) \propto f(r)^{α- 1}$ (with $α> 1$) follows from the requirement that the generalized equation admits of scaling solutions ($ f(r;t) = t^{-γ}ϕ(r/t^γ) $). The solutions have a $q$-exponential form and are found to be in agreement with the results of Monte-Carlo simulations, so providing a microscopic basis validating the nonlinear diffusion equation. Although its hydrodynamic limit is equivalent to the phenomenological porous media equation, there are extra terms which, in general, cannot be neglected as evidenced by the Monte-Carlo computations.}
description: 7 pages incl. 3 figs
GZK photon constraints on Planck scale Lorentz violation in QED
Creators: name: Maccione, Luca
name: Liberati, Stefano
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show how the argument exploited by Galaverni & Sigl in Phys. Rev. Lett., 100, 021102 (2008) (see also arXiv:0708.1737) to constrain Lorentz invariance violation (LV) using Ultra-High-Energy photon non observation by the AUGER experiment, can be extended to QED with Planck-suppressed LV (at order $O(E/M)$ and $O(E^2/M^2)$). While the original constraints given by Galaverni & Sigl happen to be weakened, we show that, when used together with other EFT reactions and the expected detection of photons at $E > 10^{19}$ eV by AUGER, this method has the potentiality not only to basically rule out order $O(E/M)$ corrections but also to strongly constrain, for the first time, the CPT-even $O(E^2/M^2)$ LV QED.
description: v2: Improved Introduction. Accepted by JCAP
A lattice of microtraps for ultracold atoms based on patterned magnetic films
Creators: name: Gerritsma, R.
name: Whitlock, S.
name: Fernholz, T.
name: Schlatter, H.
name: Luigjes, J. A.
name: Thiele, J. -U.
name: Goedkoop, J. B.
name: Spreeuw, R. J. C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We have realized a two dimensional permanent magnetic lattice of Ioffe-Pritchard microtraps for ultracold atoms. The lattice is formed by a single 300 nm magnetized layer of FePt, patterned using optical lithography. Our magnetic lattice consists of more than 15000 tightly confining microtraps with a density of 1250 traps/mm$^2$. Simple analytical approximations for the magnetic fields produced by the lattice are used to derive relevant trap parameters. We load ultracold atoms into at least 30 lattice sites at a distance of approximately 10 $μ$m from the film surface. The present result is an important first step towards quantum information processing with neutral atoms in magnetic lattice potentials.
description: 7 pages, 7 figures
Note Illustrative della Carta geologica d'Italia alla scala 1:50.000 F. 594-585 Partinico-Mondello, Servizio Geologico d'Italia - ISPRA
Creators: name: Catalano, R.
name: Basilone, L.
name: Di Maggio, C.
name: Gasparo Morticelli, M.
name: Agate, M.
name: Avellone, G.
Publisher: name: INFN Open Access Repository
Year: 2023
Subjects: carta geologica, Partinico, Mondello, Sicilia, Regione Siciliana, CARG, stratigrafia, tettonica, sottosuolo, geological map, stratigraphy, tectonics, subsurface

description: Note illustrative redatte per il Foglio geologico n. 594-585 Partinico-Mondello della Carta Geologica d'Italia alla scala 1:50.000. 271 pp.
Forces on tubes immersed in a fluidized bed
Creators: name: Hosny, Nasr. M.
Publisher: name: University of British Columbia
Year: 2010

description: Heat transfer tubes and other surfaces fixed inside fluidized beds are subjected to buffetting forces due to solids and gas motion. Coupled with erosion and corrosion, these forces can lead to tube failure. The objective of the present work was to investigate the nature and origin of the forces acting on tubes immersed horizontally in gas fluidized beds, and to provide information to be used in structural design of heat exchanger tube bundles. Experiments were carried out in a column of cross-section 215 x 200 mm and height 1.5 m. The fluidizing gas was air and the bed was operating at ambient temperature. The parameters varied in the experiments were superficial gas velocity (from U[sub=mf] to U[sub=mf] + 1.4 m/s), static bed height (from 0.30 m to 0.45 m), mean particle size (from 185 to 430 μm), particle density (from 920 to 4100 kg/m³), tube diameter (from 15 to 32 mm) and tube shape (finned vs. unfinned). All tubes were mounted horizontally at a height of 0.30 m above the orifice plate distributor. Both vertical and horizontal forces were measured on tubes in isolation and on tubes within arrays of different configurations. For some runs, local pressure variations at the surface of the test tubes were also measured simultaneously with the forces. The relation between force characteristics and bubble properties was examined by separate experiments involving injection of single bubbles. Statistical parameters of the measured forces have been calculated. Instantaneous forces on each tube within a freely bubbling bed consisted of a series of pulses whose magnitudes, durations and rate of occurrence depend on the operating parameters. The magnitude of the forces is strongly influenced by superficial gas velocity, slightly dependent on particle size, and moderately affected by bed depth and particle density. Horizontal forces are generally of significantly lower magnitude than vertical components and oscillate from side to side with a zero mean. Forces can be characterized as containing both periodic and random components and are statistically stationary. The primary frequency content of the forces is in the range 0-20 HZ, with the major frequencies being almost independent of the operating conditions and always below 10 HZ at the height of measurement, 300 mm above the distributor. The trends are consistent with the hydrodynamics of bubbling fluidized beds. Force pulses have been found to be related to bubble motion, and pulse maxima correspond to arrival of bubbles at the tube surface. The intensity of forces on individual tubes within an array have been found to depend on the position of the tube in the array. The intensity of forces can be reduced significantly by using reasonably tight inter-tube spacings and by reducing the level of the tube-bundle above the gas distributor.
Towards a unified theory of consensus
Creators: name: Somarakis, Christoforos
Publisher: name: Digital Repository at the University of Maryland
Year: 2014
Subjects: Consensus Dynamics
Flocking Networks

description: We revisit the classic multi-agent distributed consensus problem under mild connectivity assumptions and non-uniformly bounded weights. The analysis is based on a novel application of the standard results from the non-negative matrix theory. It is a simple, yet unifying, approach that yields generalized results. We apply these results to a wide variety of linear, non-linear consensus and flocking algorithms proposed in the literature and we obtain new conditions for asymptotic consensus. Our framework is developed in both discrete and continuous time. Furthermore we extend the discussion to stochastic settings.
title: Προσωρινή στέγαση πληγέντων από τις συνήθεις φυσικές καταστροφές στην Ελλάδα
title: Temporary housing for victims of common natural disasters in Greece
Creators: name: Ελευθεριαδη Σμαραγδα
Publisher: name: Technical University of Crete
Year: 2025

description: Στην σύγχρονη εποχή, είναι επιτακτική η ανάγκη δημιουργίας προσωρινών καταλυμάτων για την εξυπηρέτηση και επιβίωση των πληγέντων από τις φυσικές καταστροφές. Παρατηρείται ότι σε μια περίπτωση φυσικής καταστροφής, οι διαδικασίες που πρέπει να πραγματοποιηθούν είναι πάρα πολλές, οι φορείς που εμπλέκονται ποικίλουν και ο σχεδιασμός της προσωρινής στέγασης σε μία τοποθεσία, είναι μία διαδικασία που χρειάζεται αρκετό χρόνο, που δεν υπάρχει δεδομένου της επείγουσας ανάγκης. Γι’ αυτό η εκ των προτέρων πρόβλεψη και σχεδιασμός προκατασκευασμένων, λυόμενων κατασκευών θα αποτελέσει ένα πολύ σημαντικό εργαλείο για την βέλτιστη αντιμετώπιση αυτών των φαινομένων και την ταχύτερη οργάνωση την ώρα που θα παρουσιαστεί η ανάγκη. Δίνεται μεγάλη προσοχή σε πλήθος ζητημάτων, όπως στο προφίλ των χρηστών και των αναγκών τους, στην ταχύτητα, οικονομία και στην επιλογή πόρων που υπάρχουν σε αφθονία, καθώς δεν είναι μια αρχιτεκτονική μελέτη για απλή ευχάριστη διαβίωση αλλά πρωτίστως για την εξυπηρέτηση άμεσων και προσωρινών αναγκών. Γι’ αυτούς τους λόγους, είναι σημαντικός ο σχεδιασμός μίας μονάδας που επαναλαμβάνεται ανάλογα με το μέγεθος της καταστροφής και τον αριθμό των πληγέντων, δημιουργώντας κατά περίπτωση έναν λειτουργικό οικισμό.
description: In the modern era, the need for the creation of temporary shelters to serve and ensure the survival of those affected by natural disasters is imperative. It is observed that in the event of a natural disaster, numerous processes must be carried out, the entities involved vary, and the planning of temporary housing in a specific location is a time-consuming procedure, time that is unavailable due to the urgency of the situation. Therefore, proactive forecasting and the design of prefabricated, modular structures will serve as a crucial tool for the optimal management of such phenomena and the faster organization when the need arises.Great attention is paid to a variety of issues, such as the profile of the users and their needs, speed, cost-efficiency, and the selection of resources that are readily available. This is not an architectural study aimed at mere comfortable living but primarily focused on addressing immediate and temporary needs. For these reasons, it is important to design a unit that can be replicated based on the scale of the disaster and the number of those affected, thereby creating a functional settlement tailored to each situation.
Prosjekt Laibro: Kunstig intelligens, ekte bibliotek
Creators: name: Nogueira, Leticia Antunes
Publisher: name: Zenodo
Year: 2023
Subjects: artificial intelligence
kunstig intelligens
academic library
fagbibliotek
higher education
UH-sektor

description: Dette dokumentet presenterer mandatet til prosjektet «Laibro: Kunstig intelligens, ekte bibliotek». Prosjektlederen er Leticia Antunes Nogueira, og prosjektet varer mellom desember 2023 og juni 2024. Hovedmålet er å stake ut en felles kurs for hvordan NTNU Universitetsbiblioteket skal forholde seg til de mange mulighetene og utfordringene som KI medfører, i tråd med NTNUs politikk og føringer. Hensikten er at NTNU UB skal fortsette å være en tilpasningsdyktig og verdifull ressurs for hele universitetet og en aktiv bidragsyter i utvikling som omgir biblioteksektoren. Prosjektet har som delmål: (1) å danne det nødvendige kunnskapsgrunnlaget; (2) å gi en omforent forståelse av UBs perspektiver rundt temaet; og (3) å gi ledelsen ved UB anbefalinger for videre handling. Prosjektet organiseres i fire arbeidspakker: (AP1) kartlegging, (AP2) Opplysning, (AP3) Vurdering, (AP4) Anbefalinger.
Combination of inverse spectral transform method and method of characteristics: deformed Pohlmeyer equation
Creators: name: Zenchuk, A. I.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We apply a version of the dressing method to a system of four dimensional nonlinear Partial Differential Equations (PDEs), which contains both Pohlmeyer equation (i.e. nonlinear PDE integrable by the Inverse Spectral Transform Method) and nonlinear matrix PDE integrable by the method of characteristics as particular reductions. Some other reductions are suggested.
description: 12 pages
Complex Molecules in the L1157 Molecular Outflow
Creators: name: Arce, Héctor G.
name: Santiago-García, Joaquín
name: Jørgensen, Jes K.
name: Tafalla, Mario
name: Bachiller, Rafael
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the detection of complex organic molecules in the young protostellar outflow L1157. We identify lines from HCOOCH3, CH3CN, HCOOH and C2H5OH at the position of the B1 shock in the blueshifted lobe, making it the first time that complex species have been detected towards a molecular outflow powered by a young low-mass protostar. The time scales associated with the warm outflow gas (< 2,000 yr) are too short for the complex molecules to have formed in the gas phase after the shock-induced sputtering of the grain mantles. It is more likely that the complex species formed in the surface of grains and were then ejected from the grain mantles by the shock. The formation of complex molecules in the grains of low-mass star forming regions must be relatively efficient, and our results show the importance of considering the impact of outflows when studying complex molecules around protostars. The relative abundance with respect to methanol of most of the detected complex molecules is similar to that of hot cores and molecular clouds in the galactic center region, which suggests that the mantle composition of the dust in the L1157 dark cloud is similar to dust in those regions.
description: 8 pages, 2 tables, 2 figures
Prosjekt Laibro: Kunstig intelligens, ekte bibliotek
Creators: name: Nogueira, Leticia Antunes
Publisher: name: Zenodo
Year: 2023
Subjects: artificial intelligence
kunstig intelligens
academic library
fagbibliotek
higher education
UH-sektor

description: Dette dokumentet presenterer mandatet til prosjektet «Laibro: Kunstig intelligens, ekte bibliotek». Prosjektlederen er Leticia Antunes Nogueira, og prosjektet varer mellom desember 2023 og juni 2024. Hovedmålet er å stake ut en felles kurs for hvordan NTNU Universitetsbiblioteket skal forholde seg til de mange mulighetene og utfordringene som kunstig intelligens medfører, i tråd med NTNUs politikk og føringer. Hensikten er at NTNU UB skal fortsette å være en tilpasningsdyktig og verdifull ressurs for hele universitetet og en aktiv bidragsyter i utvikling som omgir biblioteksektoren. Prosjektet har som delmål: (1) å danne det nødvendige kunnskapsgrunnlaget; (2) å gi en omforent forståelse av UBs perspektiver rundt temaet; og (3) å gi ledelsen ved UB anbefalinger for videre handling. Prosjektet organiseres i fire arbeidspakker: (AP1) kartlegging, (AP2) Opplysning, (AP3) Vurdering, (AP4) Anbefalinger.
Stein's method and Poisson process approximation for a class of Wasserstein metrics
Creators: name: Schuhmacher, Dominic
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: Based on Stein's method, we derive upper bounds for Poisson process approximation in the $L_1$-Wasserstein metric $d_2^{(p)}$, which is based on a slightly adapted $L_p$-Wasserstein metric between point measures. For the case $p=1$, this construction yields the metric $d_2$ introduced in [Barbour and Brown Stochastic Process. Appl. 43 (1992) 9--31], for which Poisson process approximation is well studied in the literature. We demonstrate the usefulness of the extension to general $p$ by showing that $d_2^{(p)}$-bounds control differences between expectations of certain $p$th order average statistics of point processes. To illustrate the bounds obtained for Poisson process approximation, we consider the structure of 2-runs and the hard core model as concrete examples.
description: Published in at http://dx.doi.org/10.3150/08-BEJ161 the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm)
Automated free energy calculation from atomistic simulations
Creators: name: Menon, Sarath
name: Lysogorskiy, Yury
name: Rogal, Jutta
name: Drautz, Ralf
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We devise automated workflows for the calculation of Helmholtz and Gibbs free energies and their temperature and pressure dependence and provide the corresponding computational tools. We employ non-equilibrium thermodynamics for evaluating the free energy of solid and liquid phases at a given temperature and reversible scaling for computing free energies over a wide range of temperatures, including the direct integration of $P$-$T$ coexistence lines. By changing the chemistry and the interatomic potential, alchemical and upscaling free energy calculations are possible. Several examples illustrate the accuracy and efficiency of our implementation.
Small Quarkonium states in an anisotropic QCD plasma
Creators: name: Guo, Yun
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We determine the hard-loop resummed propagator in an anisotropic QCD plasma in general covariant gauges and define a potential between heavy quarks from the Fourier transform of its static limit. We find that the potential exhibits angular dependence and that binding of very small quarkonium states is stronger than in an isotropic plasma.
description: 4 pages, Contribution to Quark Matter 2008 (Jaipur, India)
An efficient algorithm finds noticeable trends and examples concerning the Černy conjecture
Creators: name: Trahtman, A. N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Discrete Mathematics (cs.DM)
subject: FOS: Computer and information sciences

description: A word w is called synchronizing (recurrent, reset, directed) word of a deterministic finite automaton (DFA) if w sends all states of the automaton on a unique state. Jan Cerny had found in 1964 a sequence of n-state complete DFA with shortest synchronizing word of length (n-1)^2. He had conjectured that it is an upper bound for the length of the shortest synchronizing word for any $n$-state complete DFA. The examples of DFA with shortest synchronizing word of length (n-1)^2 are relatively rare. To the Cerny sequence were added in all examples of Cerny, Piricka and Rosenauerova (1971), of Kari (2001) and of Roman (2004). By help of a program based on some effective algorithms, a wide class of automata of size less than 11 was checked. The order of the algorithm finding synchronizing word is quadratic for overwhelming majority of known to date automata. Some new examples of n-state DFA with minimal synchronizing word of length (n-1)^2 were discovered. The program recognized some remarkable trends concerning the length of the minimal synchronizing word. http://www.cs.biu.ac.il/~trakht/Testas.html
description: MFCS06. LNCS 4162, 10 pages
Detection of periodic signals in AGN red noise light curves: empirical tests on the Auto-Correlation Function and Phase Dispersion Minimization
Creators: name: Krishnan, S.
name: Markowitz, A. G.
name: Schwarzenberg-Czerny, A.
name: Middleton, M. J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Active galactic nucleus (AGN) emission is dominated by stochastic, aperiodic variability which overwhelms any periodic/quasi-periodic signal (QPO) if one is present. The Auto Correlation Function (ACF) and Phase Dispersion Minimization (PDM) techniques have been used previously to claim detections of QPOs in AGN light curves. In this paper we perform Monte Carlo simulations to empirically test QPO detection feasibility in the presence of red noise. Given the community's access to large databases of monitoring light curves via large-area monitoring programmes, our goal is to provide guidance to those searching for QPOs via data trawls. We simulate evenly-sampled pure red noise light curves to estimate false alarm probabilities; false positives in both tools tend to occur towards timescales longer than (very roughly) one-third of the light curve duration. We simulate QPOs mixed with pure red noise and determine the true-positive detection sensitivity; in both tools, it depends strongly on the relative strength of the QPO against the red noise and on the steepness of the red noise PSD slope. We find that extremely large values of peak QPO power relative to red noise (typically $\sim 10^{4-5}$) are needed for a 99.7 per cent true-positive detection rate. Given that the true-positive detections using the ACF or PDM are generally rare to obtain, we conclude that period searches based on the ACF or PDM must be treated with extreme caution when the data quality is not good. We consider the feasibility of QPO detection in the context of highly-inclined, periodically self-lensing supermassive black hole binaries.
description: 21 pages, 14 figures, Published in MNRAS
A Consistent Scenario for B to PS Decays
Creators: name: Delepine, D.
name: M., J. L. Lucio
name: S., J. A. Mendoza
name: Ramirez, Carlos A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider B to PS decays where P stands for pseudoscalar and S for a heavy (~1500 MeV) scalar meson. We achieve agreement with available experimental data -- which includes a two orders of magnitude hierarchy -- assuming the scalars mesons are two quark states. The contribution of the dipolar penguin operator O_{11} is quantified.
description: 10 pages, no figures
Could CRISPR Cas9 homologues completely replace Incisive and exploratory Surgery?
Creators: name: Elijah, Luken
Publisher: name: Zenodo
Year: 2023

description: Within less than a decade of its discovery, CRISPR Cas9 based gene editing  has greatly advanced in its utilization. Being the most recent gene editing technology, it has rapidly advanced to clinical trials in humans and it is highly anticipated that this technology will bring potent therapeutic solutions to many diseases via its ability to precisely manipulate DNA sequences. In this article, the mechanism of CRISPR Cas9 is highlighted and a possible recruitment of its homologues in effecting in vivo surgeries is proposed.
Anodic oxidation of phenolics found in coal conversion effluents
Creators: name: Chettiar, Meenakshi
Publisher: name: University of British Columbia
Year: 2010

description: Anodic oxidation of the major phenolics that arise in coal conversion effluents was investigated. Experiments were performed in a packed bed anode of electrodeposited lead dioxide. The phenolics were treated individually in concentrations ranging up to 1 gpl in aqueous solutions in a batch recirculation system. Compounds studied were phenol, 0-cresol, p-cresol, 2,3-Xylenol, 3,4-Xylenol, resorcinol and catechol. The effects of variation in initial concentration and applied current were studied. Solutions were analyzed primarily by gas chromatography and by total organic carbon analyzer. The effect of the oxidation process on the removal of chemical oxygen demand (C.O.D.) and biological oxygen demand (B.O.D.) was determined in a few cases. Oxidation of the phenolics was favoured by increasing the current density and decreasing the initial concentration. Complete oxidation of the organic carbon in the phenolics was found to be difficult although complete removal of the phenolic compound was achieved in several cases. No direct correlation was found between the rate of anodic oxidation on Pb02 and the structure of the phenolic compounds. A mixture of five monohydric phenols which were present at concentrations reported as typical for coal conversion wastewaters was also oxidized. Up to 95% oxidation of the phenolics was obtained. A gas chromatograph/mass spectrometer analyzer was used to examine the products of anodic oxidation in typical runs. Reaction routes were postulated for the oxidation process. Comparisons of the experimental results with a mass transfer model are presented for a few experiments.
Complex Projection of Quasianti-Hermitian Quaternionic Hamiltonian Dynamics
Creators: name: Scolarici, Giuseppe
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We characterize the subclass of quasianti-Hermitian quaternionic Hamiltonian dynamics such that their complex projections are one-parameter semigroup dynamics in the space of complex quasi-Hermitian density matrices. As an example, the complex projection of a spin-1/2 system in a constant quasianti-Hermitian quaternionic potential is considered.
description: This is a contribution to the Proc. of the 3-rd Microconference "Analytic and Algebraic Methods III"(June 19, 2007, Prague, Czech Republic), published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
Design and Construction of a Rubber Roller for Garlic Peeling Machine from Natural Rubber
Creators: name: Naret Intawong
name: Konnatee Sugtakchan
Publisher: name: Faculty of Engineering, Khon Kaen Univeristy
Year: 2010
Subjects: Natural Rubber, Rubber Roller, Compression Moulding,Garlic Peeler Machine

description: 3, 37, KKU Engineering Journal
PROBLEMS OF TEACHING FOREIGN LANGUAGE VOCABULARY AT  SCHOOL TO PRIMARY CLASSES
Creators: name: Eshboyev, Zulfiddin
name: Aminova, Sokhila
Publisher: name: Zenodo
Year: 2023

description: This given article aimes to reveal what is teaching vocabulary in the foreign language. It’s role, importance and necessity in English language. Also it shows the ways and stages how to develeop it in.It also discusses lexical and analytical importance in the English language. The author of this article shares his knowledge about how the term of vocabulary appeared in linguistics, comparison of learning process among learners in English and their native language. In addition, there are described the most common mistakes in students speech and their usage in the given language.
Development of the HITRAP experimental facility
Creators: name: Andelkovic, Z.
name: Fedotova, S.
name: Herfurth, F.
name: Kotovskiy, N.
name: Maaß, B.
name: Steinmann, J.
name: Vorobjev, G.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2014
Subjects: Physics

description: GSI Scientific Report 2013 - GSI Report 2014-1
A comparison of solution methods for the chemical equilibrium problem
Creators: name: Ruda, Margarita M.
Publisher: name: University of British Columbia
Year: 2010

description: This thesis deals with computing the equilibrium composition of a multiple species reacting mixture. When pressure and temperature are constant and the system is ideal, this is the chemical equilibrium problem. It is possible to approach this problem as the minimization of a non-linear objective function subject to linear equality constraints. The objective function represents the Gibbs' free energy of the system; the constraints refer to the conservation of the elements. Such a formulation corresponds to a "dual geometric program" which is related to another optimization problem known as the "primal geometric program". In those chemical equilibrium problems with many species, the "primal geometric programming" formulation includes less variables and constraints (inequality ones) than the dual formulation. We first compared the primal and dual formulations of the chemical equilibrium problem. Both formulations were solved with a Generalized Reduced Gradient code on seven examples. The primal formulation proved to be 30% faster than the dual for middle-sized problems (up to six simultaneous reactions). The code failed when trying to solve a dual problem of 24 species and 4 elements; but this same problem was easily solved when formulated as a primal geometric program. As the geometric programming theory includes sensitivity analysis, and we were, also interested in the effects of small changes of pressure and temperature on the optimal solution, we compared sensitivity analysis with re-optimization of the problem. Sensitivity analysis proved to be between 30% to 50% faster than re-optimization. It also yielded accurate results for the more abundant species when relatively small changes of temperature and pressure were operated. However, the equilibrium concentrations of trace species hardly matched those calculated by re-optimization. From these results we recommend the use of the primal formulation and of re-optimization to solve the chemical equilibrium problem, and we present a computer code that has been tested on a variety of examples.
Halo mass - concentration relation from weak lensing
Creators: name: Mandelbaum, Rachel
name: Seljak, Uros
name: Hirata, Christopher M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We perform a statistical weak lensing analysis of dark matter profiles around tracers of halo mass from galactic- to cluster-size halos. In this analysis we use 170,640 isolated ~L* galaxies split into ellipticals and spirals, 38,236 groups traced by isolated spectroscopic Luminous Red Galaxies (LRGs) and 13,823 MaxBCG clusters from the Sloan Digital Sky Survey (SDSS) covering a wide range of richness. Together these three samples allow a determination of the density profiles of dark matter halos over three orders of magnitude in mass, from 10^{12} M_{sun} to 10^{15} M_{sun}. The resulting lensing signal is consistent with an NFW or Einasto profile on scales outside the central region. We find that the NFW concentration parameter c_{200b} decreases with halo mass, from around 10 for galactic halos to 4 for cluster halos. Assuming its dependence on halo mass in the form of c_{200b} = c_0 [M/(10^{14}M_{sun}/h)]^β, we find c_0=4.6 +/- 0.7 (at z=0.22) and β=0.13 +/- 0.07, with very similar results for the Einasto profile. The slope (β) is in agreement with theoretical predictions, while the amplitude is about two standard deviations below the predictions for this mass and redshift, but we note that the published values in the literature differ at a level of 10-20% and that for a proper comparison our analysis should be repeated in simulations. We discuss the implications of our results for the baryonic effects on the shear power spectrum: since these are expected to increase the halo concentration, the fact that we see no evidence of high concentrations on scales above 20% of the virial radius suggests that baryonic effects are limited to small scales, and are not a significant source of uncertainty for the current weak lensing measurements of the dark matter power spectrum. [ABRIDGED]
description: 17 pages, 5 figures, accepted to JCAP pending minor revisions that are included in v2 here on arXiv