cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A 4+1 Formalism for the Evolving Stueckelberg-Horwitz-Piron Metric
Creators: name: Land, Martin
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a field theory for the local metric in Stueckelberg--Horwitz--Piron (SHP) general relativity, a framework in which the evolution of classical four-dimensional (4D) worldlines $x^μ\left( τ\right)$ ($μ= 0,1,2,3 $) is parameterized by an external time $τ$. Combining insights from SHP electrodynamics and the ADM formalism in general relativity, we generalize the notion of a 4D spacetime $\mathcal{M}$ to a formal manifold $\mathcal{M}_5 = \mathcal{M} \times R$, representing an admixture of geometry (the diffeomorphism invariance of $\mathcal{M}$) and dynamics (the system evolution of $\mathcal{M} \left( τ\right)$ with the monotonic advance of $τ\in R$). Strategically breaking the formal 5D symmetry of a metric $g_{αβ}(x,τ)$ ($α,β= 0,1,2,3,5 $) posed on $\mathcal{M}_5$, we obtain ten unconstrained Einstein equations for the $τ$-evolution of the 4D metric $γ_{μν}(x,τ)$ and five constraints that are to be satisfied by the initial conditions. The resulting theory differs from five-dimensional (5D) gravitation, much as SHP U(1) gauge theory differs from 5D electrodynamics.
description: 49 pages, 0 figures
Phase transitions in charged topological black holes dressed with a scalar hair
Creators: name: Martinez, Cristian
name: Montecinos, Alejandra
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Phase transitions in charged topological black holes dressed with a scalar field are studied. These black holes are solutions of the Einstein-Maxwell theory with a negative cosmological constant and a conformally coupled real self-interacting scalar field. Comparing, in the grand canonical ensemble, the free energies of the hairy and undressed black holes two different phase transitions are found. The first of them is one of second-order type and it occurs at a temperature defined by the value of the cosmological constant. Below this temperature an undressed black hole spontaneously acquires a scalar hair. The other phase transition is one of first-order type. The corresponding critical temperature, which is bounded from above by the one of the previous case, strongly depends on the coupling constant of the quartic self-interaction potential, and this transition only appears when the coupling constant is less than a certain value. In this case, below the critical temperature the undressed black is thermodynamically favored. However, when the temperature exceeds the critical value a hairy black hole is likely to be occur.
description: Four pages, two figures
Local Metric with Parameterized Evolution
Creators: name: Land, Martin
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a canonical Hamiltonian formulation of GR in which $τ$, the parameter of system evolution, is external to spacetime, playing a role similar to what we call time in nonrelativistic mechanics. This approach, known as Stueckelberg-Horwitz-Piron (SHP) theory, inherits the full computational power of classical analytical mechanics while maintaining manifest covariance throughout and eliminating possible conflict with general diffeomorphism invariance. In particular, SHP simplifies the initial value problem with potential applications in highly dynamical interactions, such as black hole collisions. By allowing the energy-momentum tensor and metric to depend explicitly on $τ$, we may describe particle motion in geodesic form with respect to a dynamically evolving background metric. As a toy model, we consider a $τ$-dependent mass $M(τ)$, first as a perturbation in the Newtonian approximation and then for a Schwarzschild-like metric. As expected, the extended Einstein equations imply a non-zero energy-momentum tensor, proportional to $dM / dτ$, representing a flow of mass and energy into spacetime that corresponds to the changing source mass. In $τ$-equilibrium, this system becomes a generalized Schwarzschild solution for which the extended Ricci tensor and energy-momentum tensor vanish.
description: 5 pages, no figures
INVESTMENT IN AGRICULTURE
Creators: name: Shpinev Iu.
Publisher: name: The Scientific Heritage
Year: 2020
Subjects: agriculture
agro-industrial holding
investments
investments in agriculture
digital agriculture
investment risks.

description: This article discusses the issues of investment in agriculture during the period of its digitalization. The author justifies the importance of agriculture, as well as investment risks in this sector of the economy. The problems that should be solved during the transition of agriculture to the digital level are listed. In conclusion, it is concluded that due to the peculiarities of agriculture, the main financial burden will be borne by the state during the transition of the latter to the digital level.
THE CONCEPT OF INVESTMENT
Creators: name: Leontiev, V.
Publisher: name: The Scientific Heritage
Year: 2020
Subjects: investment
the legal nature of the concept of investment
the legal nature of the investment
determination of investment.

description: This article examines the legal nature of the investment. Investment in the economy of any state is an essential component of its development. Meanwhile, investment activity in our country has not yet been fully regulated. Different regulations contain different concepts of investment. There is no single definition in the scientific literature. However, in order to create a favorable investment climate, legal science must develop a unified approach to the concept of investment.
A qualitative research on higher education media education in Beijing : from eight professors and professionals' perspectives
Creators: name: Shi, Ge
Publisher: name: University of British Columbia
Year: 2016

description: This research aims to examine university level media education in Beijing, China. The purpose is to improve the curriculum and pedagogy of media education at the university level. This qualitative research is designed to explore “what are the values and beliefs underpinning higher education media education curriculum in Beijing, China?” More precisely, based on conducting semi-structured interviews with eight participants, three sub-research questions were identified and explored: (a) what are the values and beliefs of theory underpinning media education curriculum in Beijing, China; (b) what are the values and beliefs of practice underpinning media education curriculum in Beijing, China; (c) what might the underpinning values and beliefs be in Chinese media education in the future? This study endeavors to provide a holistic view of present media education curriculum and pedagogy in Beijing. The hope is that it might develop thoughtful views of theory and practice learning in media education and contribute toward a framework of what media education could be.
Thermal fluctuations and nanoscale effects in the nucleation of carbonaceous dust grains
Creators: name: Keith, Adam C.
name: Lazzati, Davide
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the role of thermal fluctuations and of the finite number of monomers in small clusters of carbon atoms on the nucleation rate of carbonaceous grains. Thermal fluctuations are due to the quantized nature of the energy exchanges between the clusters, the gas, and the radiation field. Nanoscale effects modify the spontaneous detachment of monomers due to the finite amount of internal energy contained in small clusters. We find that both corrections have a big impact on the stability of the clusters and on the rate of nucleation. We implement our model within a Monte Carlo code to derive the new stability conditions for clusters as well as nucleation rates. Due to computing limitations, we can explore the consequences of this approach only at high temperatures, at which particle interactions are not much less frequent than photon interactions. We found that the combined effect of the detachment correction and the temperature fluctuations produces faster nucleation. We also found that the nucleation rate depends on the composition of the gas and not only on the partial pressure of the compound that condensates into grains. This is a unique result of this model that can be used to prove or disprove it.
description: 10 pages, submitted to MNRAS, comments welcome
On the Dynamics of Human Proximity for Data Diffusion in Ad-Hoc Networks
Creators: name: Panisson, André
name: Barrat, Alain
name: Cattuto, Ciro
name: Broeck, Wouter Van den
name: Ruffo, Giancarlo
name: Schifanella, Rossano
Publisher: name: arXiv
Year: 2011
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Human-Computer Interaction (cs.HC)
subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We report on a data-driven investigation aimed at understanding the dynamics of message spreading in a real-world dynamical network of human proximity. We use data collected by means of a proximity-sensing network of wearable sensors that we deployed at three different social gatherings, simultaneously involving several hundred individuals. We simulate a message spreading process over the recorded proximity network, focusing on both the topological and the temporal properties. We show that by using an appropriate technique to deal with the temporal heterogeneity of proximity events, a universal statistical pattern emerges for the delivery times of messages, robust across all the data sets. Our results are useful to set constraints for generic processes of data dissemination, as well as to validate established models of human mobility and proximity that are frequently used to simulate realistic behaviors.
description: A. Panisson et al., On the dynamics of human proximity for data diffusion in ad-hoc networks, Ad Hoc Netw. (2011)
Pressure of massless hot scalar theory in the boundary effective theory framework
Creators: name: Bessa, A.
name: Brandt, F. T.
name: de Carvalho, C. A. A.
name: Fraga, E. S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We use the boundary effective theory (BET) approach to thermal field theory in order to calculate the pressure of a system of massless scalar fields with quartic interaction. The method naturally separates the infrared physics, and is essentially non-perturbative. To lowest order, the main ingredient is the solution of the free Euler-Lagrange equation with non-trivial (time) boundary conditions. We derive a resummed pressure, which is in good agreement with recent calculations found in the literature, following a very direct and compact procedure.
description: 10 pages, 4 figures
Attention-Based Vandalism Detection in OpenStreetMap
Creators: name: Tempelmeier, Nicolas
name: Demidova, Elena
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: OpenStreetMap (OSM), a collaborative, crowdsourced Web map, is a unique source of openly available worldwide map data, increasingly adopted in Web applications. Vandalism detection is a critical task to support trust and maintain OSM transparency. This task is remarkably challenging due to the large scale of the dataset, the sheer number of contributors, various vandalism forms, and the lack of annotated data. This paper presents Ovid - a novel attention-based method for vandalism detection in OSM. Ovid relies on a novel neural architecture that adopts a multi-head attention mechanism to summarize information indicating vandalism from OSM changesets effectively. To facilitate automated vandalism detection, we introduce a set of original features that capture changeset, user, and edit information. Furthermore, we extract a dataset of real-world vandalism incidents from the OSM edit history for the first time and provide this dataset as open data. Our evaluation conducted on real-world vandalism data demonstrates the effectiveness of Ovid.
Ortsaufgelöste Erkennung von Ermüdungsschäden an Schweißnähten mit Hilfe aktiver Infrarot-Thermografie
Creators: name: Plum, Robin
name: Ummenhofer, Thomas
Publisher: name: Karlsruhe
Year: 2010

description: The paper presents two thermographical approaches for the detection of fatigue damages in welded joints of mild carbon steel S355. First, a recently developed extension of the thermoelastic stress analysis is utilised for early crack detection on butt welds. At low frequency fatigue loading the method separates the linear and nonlinear temperature response related to the harmonic loading. Significant changes during the test reveal the progressive fatigue damage evolution. On the tested components localised damage processes could be observed as early as 10 to 30 % of the total fatigue lifetime. The method is especially suited for laboratory testing since a defined and damage relevant loading is necessary. As a second approach the ultrasound excited thermography is applied using a high intensity ultrasonic transducer working at 20 kHz. Induced elastic waves lead to oscillations of the tested component. Dry friction at the crack faces provides a localised heat generation which allows for crack detection. It was found that the crack can be detected after 35 % of the fatigue lifetime. Although the crack detection on metal components is strongly dependent on the ultrasonic frequency a high potential for a future mobile application can be awarded to this method.
Extended thermoelastic stress analysis applied to carbon steel and CFRP
Creators: name: Plum, Robin
name: Medgenberg, Justus
name: Merzbacher, Marco
name: Ummenhofer, Thomas
Publisher: name: Karlsruhe
Year: 2010

description: Thermoelastic Stress Analysis (TSA) by means of radiometric full field measurements has been primarily developed over 20 years ago. Although the underlying physics concerning the linear thermal response with respect to the loading as well as dissipative and nonlinear effects have been extensively studied in the past the potential of applications in the field of non destructive testing does not seem to be exhausted, yet. As an extension of the classic thermoelastic analysis the use of second harmonic temperature amplitudes for spatially resolved damage detection due to cyclic plasticity in ferritic low-alloy carbon steel is demonstrated. Temperature variations of several mK are found to be useful as a fatigue damage indicator. Furthermore the application to partially delaminated CFRP coupons under cyclic peeling load reveals that the classic thermoelastic measurement is able to visualise the locally stressed woven fibre ply. In contrast, the evaluation of the spatial temperature response at the double loading frequency clearly allows to detect the delamination front of homogeneous coupons whereas the dominating bending stress distribution is efficiently suppressed.
Structural-thermal FE simulation of vibration and heat generation of cracked steel plates due to ultrasound excitation used for vibrothermography
Creators: name: Plum, Robin
name: Ummenhofer, Thomas
Publisher: name: Karlsruhe
Year: 2010

description: A major drawback of ultrasound excited thermography applied to metal components manifests in the pronounced frequency dependence of crack detectability. In order to investigate the crack face interaction by which it is constituted whether a certain crack can be detected or not structural-thermal Finite Element simulations of a massive steel plate are conducted using ANSYS/LS-DYNA considering the physical roughness of the crack faces. The achieved numerical results are in a good agreement with experimental data of a performed ultrasonic sweep thermography (UST).
The Constant Inner-Disk Radius of LMC X-3: A Basis for Measuring Black Hole Spin
Creators: name: Steiner, James F.
name: McClintock, Jeffrey E.
name: Remillard, Ronald A.
name: Gou, Lijun
name: Yamada, Shin'ya
name: Narayan, Ramesh
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The black-hole binary system LMC X-3 has been observed by virtually every X-ray mission since the inception of X-ray astronomy. Among the persistent sources, LMC X-3 is uniquely both habitually soft and highly variable. Using a fully relativistic accretion-disk model, we analyze hundreds of spectra collected during eight X-ray missions that span 26 years. For a selected sample of 391 RXTE spectra we find that to within ~2 percent the inner radius of the accretion disk is constant over time and unaffected by source variability. Even considering an ensemble of eight X-ray missions, we find consistent values of the radius to within ~4-6 percent. Our results provide strong evidence for the existence of a fixed inner-disk radius. The only reasonable inference is that this radius is closely associated with the general relativistic innermost stable circular orbit (ISCO). Our findings establish a firm foundation for the measurement of black hole spin.
description: Accepted for publication in ApJL; 15 manuscript pages, 3 figures
A variational pseudo-self-interaction correction approach: ab-initio description of correlated oxides and molecules
Creators: name: Filippetti, A.
name: Pemmaraju, C. D.
name: Delugas, P.
name: Puggioni, D.
name: Fiorentini, V.
name: Sanvito, S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a fully variational generalization of the pseudo self-interaction correction (VPSIC) approach previously presented in two implementations based on plane-waves and atomic orbital basis set, known as PSIC and ASIC, respectively. The new method is essentially equivalent to the previous version for what concern the electronic properties, but it can be exploited to calculate total-energy derived properties as well, such as forces and structural optimization. We apply the method to a variety of test cases including both non-magnetic and magnetic correlated oxides and molecules, showing a generally good accuracy in the description of both structural and electronic properties.
description: 23 pages, 9 tables, 16 figures
Assessment of fertilizers for improved productivity of maize(Zea mays L.)
Creators: name: Agbesi Kwadzo Keteku
name: Pumisak Intanon
name: Suwat Terapongtanakorn
name: Ruankwan Intanon
Publisher: name: Research and Development Office, Prince of Songkla University
Year: 2021
Subjects: maize yield
potassium nitrate
production economics
soil properties
HO fertilizer

description: Songklanakarin Journal of Science and Technology (SJST), 43, 4, 1086-1093
The Potential Application of Region Marking Software Tool in Medical Diagnostic Education
Creators: name: Dinu, Dragan; Dragan, Ivetic
Publisher: name: Editura Universitara
Year: 2012
Subjects: subject: 0 Social sciences
subject: 37 Education
subject: 371 Instructional design
subject: 004:37 Elearning

description: Region Marking Software Tool is used in the first phase of ROC evaluation for data gathering. In this paper we will demonstrate that this software tool can be adopted, with modifications, as a software platform for education in medical image diagnostics. Specifically, diagnostic tasks are performed the same way in both ROC evaluation and medical image diagnostic education. We will present a prototype software tool built upon our Region Marking Software Tool. As it is based on web technologies, this software tool is suitable for presence and distance education and training in medical image diagnostics.
Optimizing FeCl3 in coagulation-flocculation treatment of dye wastes
Creators: name: Mohanad Jawad Abbas
name: Radin Mohamed
name: Al-Sahari, Mohammed
name: Al-Gheethi, Adel
name: Daud, Azra Munirah Mat
Publisher: name: Research and Development Office, Prince of Songkla University
Year: 2021
Subjects: color removal
wastewater treatment
pigment waste
textile waste

description: Songklanakarin Journal of Science and Technology (SJST), 43, 4, 1094-1102
Electrons diffusion and signal noise contributions on electron clusters detection efficiency
Creators: name: Beretta, M.
name: Gatti, C.
Publisher: name: INFN Open Access Repository
Year: 2014
Subjects: Cluster Counting
INFN-14-08/LNF
Note INFN

description: The Cluster Counting (CC) technique, proposed for dE/dx measurements with the SuperB drift-chamber, could, significantly, improve particle identification by avoiding the fluctuations involved in charge measurements. As the technique is quite sensitive to the detector working conditions and to the front-end chain response, in this note we have investigated the effects on clusters detection efficiency of electron diffusion, preamplifier frequencyresponse and Signal-to-Noise Ratio (SNR) using different algorithms. The evaluation is based on Garfield datasets, generated for a single cell geometry, at different impact points for π /µ/e particles with momenta 120, 140, 160, 180 and 210 MeV. The current waveforms generated by Garfield have been shaped according to the preamplifier response and different amounts of white gaussian noise has been added to the waveforms to simulate different SNRs. Finally an estimation of π /µ/e separation is shown.
Application of interval-valued neutrosophic soft sets in decision makingbased on game theory
Creators: name: Somen Debnath
Publisher: name: Research and Development Office, Prince of Songkla University
Year: 2021
Subjects: soft set
neutrosophic soft set
ivn-soft payoff function
ivn-soft dominated strategy

description: Songklanakarin Journal of Science and Technology (SJST), 43, 4, 1103-1114
Funktionalisierung strukturierter Oberflächen mit E-Cadherin Ektodomänen
Creators: name: Engin, Sinem
Publisher: name: Karlsruhe
Year: 2010
Subjects: Zell-Zell-Adhäsion
E-Cadherin
Micro-Contact Printing (µCP)
Thiol-SAMs
SNAP-tag Kopplung

description: In dieser Arbeit wurde SNAP-getaggtes E-Cadherin hergestellt und auf mittels µCP strukturierten Thiol-Monoschichten immobilisiert. Thiol-Monoschichten wurden mittels XPS, AFM, ToF-SIMS und QCM-D charakterisiert. E-Cadherin funktionalisierte Oberflächen wurden in Zelladhäsionsassays eingesetzt um die Cadherin-Funktionalität nachzuweisen.
Surface Symmetry Energy of Nuclear Energy Density Functionals
Creators: name: Nikolov, N.
name: Schunck, N.
name: Nazarewicz, W.
name: Bender, M.
name: Pei, J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the bulk deformation properties of the Skyrme nuclear energy density functionals. Following simple arguments based on the leptodermous expansion and liquid drop model, we apply the nuclear density functional theory to assess the role of the surface symmetry energy in nuclei. To this end, we validate the commonly used functional parametrizations against the data on excitation energies of superdeformed band-heads in Hg and Pb isotopes, and fission isomers in actinide nuclei. After subtracting shell effects, the results of our self-consistent calculations are consistent with macroscopic arguments and indicate that experimental data on strongly deformed configurations in neutron-rich nuclei are essential for optimizing future nuclear energy density functionals. The resulting survey provides a useful benchmark for further theoretical improvements. Unlike in nuclei close to the stability valley, whose macroscopic deformability hangs on the balance of surface and Coulomb terms, the deformability of neutron-rich nuclei strongly depends on the surface-symmetry energy; hence, its proper determination is crucial for the stability of deformed phases of the neutron- rich matter and description of fission rates for r-process nucleosynthesis.
description: 16 pages, submitted to Phys. Rev. C
Using reactive distillation for upgrading bio-oil from co-pyrolysisof palm kernel shell and palm empty fruit bunches
Creators: name: Phonsan Saetiao
name: Sukritthira Rattanawilai
name: Songtham Photaworn
name: Kulchanat Prasertsit
Publisher: name: Research and Development Office, Prince of Songkla University
Year: 2021
Subjects: reactive distillation
co-pyrolysis
palm kernel shell
empty fruit bunches
upgrading bio-oil

description: Songklanakarin Journal of Science and Technology (SJST), 43, 4, 1115-1122
Integrating Random Matrix Theory Predictions with Short-Time Dynamical Effects in Chaotic Systems
Creators: name: Smith, A. Matthew
name: Kaplan, Lev
Publisher: name: arXiv
Year: 2010
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We discuss a modification to Random Matrix Theory eigenstate statistics, that systematically takes into account the non-universal short-time behavior of chaotic systems. The method avoids diagonalization of the Hamiltonian, instead requiring only a knowledge of short-time dynamics for a chaotic system or ensemble of similar systems. Standard Random Matrix Theory and semiclassical predictions are recovered in the limits of zero Ehrenfest time and infinite Heisenberg time, respectively. As examples, we discuss wave function autocorrelations and cross-correlations, and show that significant improvement in accuracy is obtained for simple chaotic systems where comparison can be made with brute-force diagonalization. The accuracy of the method persists even when the short-time dynamics of the system or ensemble is known only in a classical approximation. Further improvement in the rate of convergence is obtained when the method is combined with the correlation function bootstrapping approach introduced previously.
description: 9 pages, 6 figures
Portable Waveform Development for Software Defined Radios
Creators: name: Nagel, Stefan Werner
Publisher: name: Karlsruhe
Year: 2011
Subjects: Software Defined Radio
Model Based Design
Portability

description: This work focuses on the question: "How can we build waveforms that can be moved from one platform to another?'' Therefore an approach based on the Model Driven Architecture was evaluated. Furthermore, a proof of concept is given with the port of a TETRA waveform from a USRP platform to an SFF SDR platform.
Il fenomeno della superconduttività
Creators: name: Di Gioacchino, Daniele
Publisher: name: INFN Open Access Repository
Year: 2014
Subjects: superconduttività
INFN-DIV-14-01/LNF
Note INFN

description: In questa nota divulgativa sono presentate le proprietà fenomenologiche della fase superconduttrice quali la resistenza elettrica nulla, l’espulsione del campo magnetico o effetto ‘Meissner’, il concetto di campo magnetico critico e supercorrente critica, gli ordini di grandezza delle variabili fisiche coinvolte puntualizzando le tappe storiche della superconduttività. Si mostra il differente comportamento fra un superconduttore e un conduttore perfetto e sono introdotte le due classi di materiali superconduttori e le differenti strutture cristalline. Inoltre si accenna cosa è un quanto di flusso magnetico, le conseguenze dovute alla quantizzazione del campo magnetico in un superconduttore. Brevemente si presenta la speculazione che delinea i fondamenti microscopici del fenomeno superconduttivo: la teoria ‘BCS’ e il concetto della formazione delle coppie di ‘Cooper’. Infine è accennata la descrizione della transizione di fase da uno stato normale a quello superconduttore come “rottura spontanea della simmetria”, concetto elegante e potente usato in modo generale per la comprensione di molteplici fenomeni fisici.
Optimized parameters to tune I-PD control through firefly algorithmfor heating operations of plastic injection molding
Creators: name: Akekachai Pannawan
name: Supattarachai Sudsawat
Publisher: name: Research and Development Office, Prince of Songkla University
Year: 2021
Subjects: firefly algorithm optimization
integral plus proportional and derivative (I-PD) controller
proportional integral and derivative (PID)
Ziegler-Nichols Tuning (ZN)

description: Songklanakarin Journal of Science and Technology (SJST), 43, 4, 1123-1130
On Tao's "finitary" infinite pigeonhole principle
Creators: name: Gaspar, Jaime
name: Kohlenbach, Ulrich
Publisher: name: arXiv
Year: 2010
Subjects: subject: Logic (math.LO)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 03B30

description: In 2007, Terence Tao wrote on his blog an essay about soft analysis, hard analysis and the finitization of soft analysis statements into hard analysis statements. One of his main examples was a quasi-finitization of the infinite pigeonhole principle IPP, arriving at the "finitary" infinite pigeonhole principle FIPP1. That turned out to not be the proper formulation and so we proposed an alternative version FIPP2. Tao himself formulated yet another version FIPP3 in a revised version of his essay. We give a counterexample to FIPP1 and discuss for both of the versions FIPP2 and FIPP3 the faithfulness of their respective finitization of IPP by studying the equivalences IPP FIPP2 and IPP FIPP3 in the context of reverse mathematics. In the process of doing this we also introduce a continuous uniform boundedness principle CUB as a formalization of Tao's notion of a correspondence principle and study the strength of this principle and various restrictions thereof in terms of reverse mathematics, i.e., in terms of the "big five" subsystems of second order arithmetic.
Overcoming missing data in phylogenetic analysis of shotgun sequencing to detect HIV adaptation to immune response
Creators: name: Nguyen, Thuy
Publisher: name: University of British Columbia
Year: 2016

description: DNA sequencing gives us insight into how viruses adapt to their host immune systems. Studies of viral populations typically employ deep amplicon sequencing with next-generation reads to capture a detailed sample of genetic variation in a population. The high amount of overlapping sites in a multiple sequence alignment of reads from amplicon sequencing form ideal input for phylogenetic reconstruction, a necessary step for studying evolutionary relations in a population. However, the typical short read lengths of < 600 bp from next generation sequencing technology with the best sequence error rate impose a severe limit on the width of genomic regions for which evolutionary relationships can be analyzed. Shotgun sequencing, in which DNA is fragmented at random positions, is an efficient alternative to amplicon sequencing for covering wider regions of a genome with sufficient depth. Due to the random staggered positions of shotgun reads in a genome, an extremely high percentage of missing data can result in multiple sequence alignment of shotgun sequencing. The absence of sequence homology across the entire set of short reads makes it impossible to reconstruct a phylogenetic tree, limiting the utility of shotgun data for phylogenetic analysis. We developed the Umberjack software pipeline, which employs a 'sliding window' approach to minimize the effect of missing data during phylogenetic reconstruction and obtain evolutionary statistics to detect sites under selection. Using Umberjack to measure a new metric of directional selection I, significant directional selection was detected in treatment-naive HIV populations at sites with previously documented associations with cytotoxic T-lymphocyte (CTL) response. Further, substitutions towards wild-type amino acids were found to occur early within the population's history, but rarely occurred at a site after the appearance of a CTL escape mutation. Measuring the same metric I in drug treated HIV populations, the directional selection due to the constant pressure of drug treatment was much greater than the directional selection from the immune system.
Lung Perfusion Imaging in a Patient with Acute Pulmonary Embolism Using Dual Energy Computed Tomography
Creators: name: Kantarci, Mecit
Publisher: name: EURORAD
Year: 2014
Subjects: subject: Lung
subject: CT-Angiography
subject: Contrast agent-intravenous
subject: Embolism / Thrombosis

description: Clinical History Image Findings Discussion Find Diagnosis Differential Diagnosis
description: male, 67 years
description: Clinical History: A 67-year-old man presented with sudden cough and hemoptysis. On laboratory examinations, D-dimer levels were found unexpectedly high (3623 ng/ml, normal value, < 250 ng/mL). Thus, the patient was referred to our radiology department for evaluation of ... Final Diagnosis: Acute pulmonary embolism
From Cognitive Binary Logic to Cognitive Intelligent Agents
Creators: name: Popescu-Bodorin, Nicolaie
name: Balas, Valentina E.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Logic in Computer Science (cs.LO)
subject: Logic (math.LO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: F.4.1
subject: 03B70, 97E30, 03F03

description: The relation between self awareness and intelligence is an open problem these days. Despite the fact that self awarness is usually related to Emotional Intelligence, this is not the case here. The problem described in this paper is how to model an agent which knows (Cognitive) Binary Logic and which is also able to pass (without any mistake) a certain family of Turing Tests designed to verify its knowledge and its discourse about the modal states of truth corresponding to well-formed formulae within the language of Propositional Binary Logic.
description: 3 figures, 4 pages, latest version: http://fmi.spiruharet.ro/bodorin/
Isolation and Identification of fungi associated with diseasedfreshwater fishes in Terengganu, Malaysia
Creators: name: Khairulbariyyah Zakaria
name: Sudau Eh Teet
name: Nor Hazwani Hamzah
name: Aznan, Alia Syafiqah
name: Manaf, Mohamed Tajuddin Abdul
name: Ibrahim, Wan Nurhafizah Wan
name: Leong, Lee Kok
name: NurulAqilah Iberahim
name: Musa, Nadirah
name: Abdulrazzak, Laith
name: Daud, Hassan Mohd
name: Taib, Mariam
name: Kishio Hatai
name: B, Akbar John
name: Jalal K. C., A.
name: Sheikh, Hassan I.
name: Najiah Musa
Publisher: name: Research and Development Office, Prince of Songkla University
Year: 2021
Subjects: aquaculture
freshwater fishes
fungi
internal transcribed spacer
ITS

description: Songklanakarin Journal of Science and Technology (SJST), 43, 4, 1131-1139
On Irregular Binomial $D$-modules
Creators: name: Fernández-Fernández, María-Cruz
name: Castro-Jiménez, Francisco-Jesús
Publisher: name: arXiv
Year: 2010
Subjects: subject: Algebraic Geometry (math.AG)
subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics

description: We prove that a holonomic binomial $D$--module $M_A (I,β)$ is regular if and only if certain associated primes of $I$ determined by the parameter vector $β\in \CC^d$ are homogeneous. We further describe the slopes of $M_A(I,β)$ along a coordinate subspace in terms of the known slopes of some related hypergeometric $D$--modules that also depend on $β$. When the parameter $β$ is generic, we also compute the dimension of the generic stalk of the irregularity of $M_A(I,β)$ along a coordinate hyperplane and provide some remarks about the construction of its Gevrey solutions.
description: 17 pages, Theorems 4.8 and 5.1, Examples 4.5 and 4.6, some remarks and some references added
AI, Neuroscience and Aging
Creators: name: Marcelli, Augusto
name: Pereira, Joana B.
name: Volpe, Giovanni
Publisher: name: INFN Open Access Repository
Year: 2023
Subjects: Artificial Intelligence, Neuroscience, Aging

description: The booklet collects the contribution of the bilateral workshop on Artificial Intelligence applied to neurosciences: applications of new technologies in Italy and Sweden

Co-organized by the Scientific Office of the Embassy of Italy, the Karolinksa Institute and the University of Gothenburg, the ”AI, Neuroscience and Aging Symposium” was held in Stockholm on 27 and 28 November 2023.

The aim of this symposium was to bring together Swedish and Italian researchers engaged in neuroscience research, encouraging a dynamic exchange of pioneering ideas thanks to new technologies based on the use of artificial intelligence and to promote interdisciplinary bilateral collaboration.

The objective was to explore new opportunities to leverage artificial intelligence to deepen our understanding of neural mechanisms, while trying to explore new applications in cognitive functions and healthcare.

The event provided an opportunity to create a lasting partnership and identify possibilities for competitive joint research initiatives to improve the understanding of intelligence, both human and artificial.

The work of this bilateral meeting was coordinated by Augusto Marcelli, scientific attaché in Stockholm, JoanaB.  Pereira, associate professor of the Karolinska Institute, and Giovanni Volpe, professor at the University of Gothenburg. 

The public event hosted at the Karolinska Institute.was attended by 200 researchers and students. There were contributions from Swedish and Italian Universities as well as two swedish companies: Sectra and Mabel AI.
description: none
Warped black holes in 3D general massive gravity
Creators: name: Tonni, Erik
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study regular spacelike warped black holes in the three dimensional general massive gravity model, which contains both the gravitational Chern-Simons term and the linear combination of curvature squared terms characterizing the new massive gravity besides the Einstein-Hilbert term. The parameters of the metric are found by solving a quartic equation constrained by an inequality that imposes the absence of closed timelike curves. Explicit expressions for the central charges are suggested by exploiting the fact that these black holes are discrete quotients of spacelike warped AdS(3) and a known formula for the entropy. Previous results obtained separately in topological massive gravity and in new massive gravity are recovered as special cases.
description: 38 pages, 7 figures. v2: minor changes, added refs and an appendix on self-dual and null z-warped black holes
Information extraction pipelines for knowledge graphs
Creators: name: Jaradeh, Mohamad Yaser
name: Singh, Kuldeep
name: Stocker, Markus
name: Both, Andreas
name: Auer, Sören
Publisher: name: London : Springer
Year: 2023
Subjects: subject: Information extraction
subject: NLP pipelines
subject: Semantic search
subject: Semantic web
subject: Software reusability
subject: 004
subject: 070

description: In the last decade, a large number of knowledge graph (KG) completion approaches were proposed. Albeit effective, these efforts are disjoint, and their collective strengths and weaknesses in effective KG completion have not been studied in the literature. We extend Plumber, a framework that brings together the research community’s disjoint efforts on KG completion. We include more components into the architecture of Plumber to comprise 40 reusable components for various KG completion subtasks, such as coreference resolution, entity linking, and relation extraction. Using these components, Plumber dynamically generates suitable knowledge extraction pipelines and offers overall 432 distinct pipelines. We study the optimization problem of choosing optimal pipelines based on input sentences. To do so, we train a transformer-based classification model that extracts contextual embeddings from the input and finds an appropriate pipeline. We study the efficacy of Plumber for extracting the KG triples using standard datasets over three KGs: DBpedia, Wikidata, and Open Research Knowledge Graph. Our results demonstrate the effectiveness of Plumber in dynamically generating KG completion pipelines, outperforming all baselines agnostic of the underlying KG. Furthermore, we provide an analysis of collective failure cases, study the similarities and synergies among integrated components and discuss their limitations.
Heavy Flavor and Jets at RHIC
Creators: name: Prindle, Duncan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We present recent results for heavy flavor and jets produced in $\sqrt{s_{NN}} = 200$ GeV p-p, d-Au, Cu-Cu and Au-Au collisions at at RHIC. We find J/$ψ$ production is suppressed in Au-Au, but high energy J/$ψ$ are not suppressed in d-Au or Cu-Cu. Non-photonic electrons from D and B mesons are both suppressed in Au-Au. We study jets using two-particle 2D angular correlations as well as jet reconstruction algorithms. We find that jets show little if any suppression, but are highly modified in central Au-Au, becoming elongated in the $η$ direction and having fewer high-$p_t$ particles but many more low-$p_t$ particles for central Au-Au.
description: Proceedings of the 6th International Conference on Physics and Astrophysics of the Quark Gluon Plasma (ICPAQGP-2010), Goa, India, 6-12 December 2010
Syntheses, Structures and Properties of f and d-f Complexes using O-vanillin-derived Schiff base Ligands
Creators: name: Mondal, Kartik Chandra
Publisher: name: Karlsruhe
Year: 2011
Subjects: Coordination clusters
f and d-f SMMs
Magnetic and fluorescence properties

description: Some Schiff base ligands containing two types of pockets (pocket-I and -II) were chosen for syntheses of f and d-f coordination clusters. It is well known that along first row periodic table the geometries and ionic radii may change. Thus, to study how these two effects can change the nuclearity and shape of a coordination cluster, different 3d metal (Zn to Co) ions were introduced. Thus varying the metal and molar ratios suitability of SMM and/or fluorescence properties were investigated.
Completing the Calculation of BLM corrections to B -> Xs gamma
Creators: name: Misiak, Mikolaj
name: Poradzinski, Michal
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Perturbative O(alpha_s^2) corrections to BR(B -> Xs gamma) in the BLM approximation receive contributions from two-, three- and four-body final states. While all the two-body results are well established by now, the other ones have remained incomplete for several years. Here, we calculate the last contribution that has been missing to date, namely the one originating from interference of the current-current and gluonic dipole operators (K_18^{(2)beta_0} and K_{28}^{(2)beta_0}). Moreover, we confirm all the previously known results for BLM corrections to the photon energy spectrum that involve the current-current operators (e.g., K_{22}^{(2)beta_0} and K_{27}^{(2)beta_0}). Finally, we also confirm the recent findings of Ferroglia and Haisch on self-interference of the gluonic dipole operator (K_{88}^{(2)beta_0}).
description: 5 pages, 2 ps figures
The zero-truncated discrete transmuted generalized inverseWeibull distribution and its applications
Creators: name: Atchanut Rattanalertnusorn
name: Sirinapa Aryuyuen
Publisher: name: Research and Development Office, Prince of Songkla University
Year: 2021
Subjects: zero-truncated distribution
discrete distribution
DTGIW
ZT-DTGIW
maximum likelihood
count data
zero-truncated data

description: Songklanakarin Journal of Science and Technology (SJST), 43, 4, 1140-1151
Near surface electrical resistivity structures around an active fault tracein Weh Island, Indonesia
Creators: name: Muhammad, Nanda
name: Rizal Syamsul
name: Faisal, Abdullah
name: Idroes Rinaldi
name: Nazli, Ismail
Publisher: name: Research and Development Office, Prince of Songkla University
Year: 2021
Subjects: shallow structure
rapture
Seulimeum Segment
Great Sumatran Fault
paleo-seismic

description: Songklanakarin Journal of Science and Technology (SJST), 43, 4, 1152-1159
Faster multiplication over $\mathbb{F}_2[X]$ using AVX512 instruction set and VPCLMULQDQ instruction
Creators: name: Robert, Jean-Marc
name: Véron, Pascal
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences
subject: E.3; E.4
subject: 11T71

description: Code-based cryptography is one of the main propositions for the post-quantum cryptographic context, and several protocols of this kind have been submitted on the NIST platform. Among them, BIKE and HQC are part of the five alternate candidates selected in the third round of the NIST standardization process in the KEM category. These two schemes make use of multiplication of large polynomials over binary rings, and due to the polynomial size (from 10,000 to 60,000 bits), this operation is one of the costliest during key generation, encapsulation, or decapsulation mechanisms. In this work, we revisit the different existing constant-time algorithms for arbitrary polynomial multiplication. We explore the different Karatsuba and Toom-Cook constructions in order to determine the best combinations for each polynomial degree range, in the context of AVX2 and AVX512 instruction sets. This leads to different kernels and constructions in each case. In particular, in the context of AVX512, we use the VPCLMULQDQ instruction, which is a vectorized binary polynomial multiplication instruction. This instruction deals with up to four polynomial (of degree up to 63) multiplications, the four results being stored in one single 512-bit word. This allows to divide by roughly 3 the retired instruction number of the operation in comparison with the AVX2 instruction set implementations, while the speedup is up to 39% in terms of processor clock cycles. These results are different than the ones estimated in Drucker (Fast multiplication of binary polynomials with the forthcoming vectorized vpclmulqdq instruction, 2018). To illustrate the benefit of the new VPCLMULQDQ instruction, we used the HQC code to evaluate our approaches. When implemented in the HQC protocol, for the security levels 128, 192, and 256, our approaches provide up to 12% speedup, for key pair generation.