cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
IMPACT OF MARINE POLLUTION ON THE PRODUCTIVITY OF FISH AND SEAFOOD COMPANIES IN PORT HARCOURT METROPOLIS RIVERS STATE FOOD COMPANIES IN PORT HARCOURT METROPOLIS, RIVERS STATE, NIGERIA
Creators: name: Kingsley, Chukwuemeka Opara
Publisher: name: kEITH jOURNAL
Year: 2025
Subjects: Marine pollution, productivity, oily waste, solid waste, fish, sea foods, companies. longitudinal pier height difference; Bridges; Seismic response; influence

description: This study investigated the impact of marine pollution on productivity of fish and sea food companies in Port Harcourt Metropolis, Rivers State. The study adopted a descriptive and experimental research design and it is a census study. Primary source of data was generated through self- administered questionnaire. The target population of interest for this study comprised of two hundred and sixty-six managers and supervisors of twenty selected fish and sea food companies in Port Harcourt Metropolis. The major sources of data for the study were via primary sources and lab oratory analysis. Primary data for this research was collected through the administration of a structured questionnaire. Also, laboratory analysis was conducted on the three water bodies which were utilized by shipping and marine food companies’ operation. The research instrument was validated through supervisor’s vetting and approval while the reliability of the instrument was achieved by the use of the Pearson Product Moment Correlation coefficient and a reliability coefficient of 0.93. Data generated were analyzed and presented using both descriptive and inferential statistical techniques. The hypotheses were tested using the Spearman’s Rank Order Correlation Statistics. The findings revealed that there is a significant relationship between oil waste from marine pollution and the productivity of fish and sea food companies in Rivers State [(P =.000) p<0.05]; there is significant relationship between solid waste discharged from marine pollution and the productivity of fish and sea food companies in Rivers State [(P =.000) p<0.05]; amongst others. This finding was further substantiated with the laboratory results which strongly affirmed the above findings. The study recommends that the management of the shipping industries or the fish/sea food companies should ensure they create better ways of oily waste disposal to minimize the rate of marine pollution and enhance the productivity of fish and seafood companies in Port Harcourt Metropolis, Rivers State
On interactions of P-glycoprotein with various anti-tumor drugs by binding free energy calculations
Creators: name: Zhang, Bo
name: Zhang, Junqiao
name: Kang, Zhengzhong
name: Liang, Lijun
name: Liu, Yingchun
name: Wang, Qi
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Neuroscience
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Cancer
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: P-glycoprotein (P-gp, MDR1), one of ATP-binding cassette transporters, may confer tumor cells cross-resistance to chemotherapeutics. A large amount of P-gp inhibitors were designed to inhibit the multidrug resistance (MDR) feature of P-gp. However, no sufficient researches were reported to explore the correlation between binding capacity and drug property by experiment. Without particular drug property found to inhibit the MDR feature of P-gp, the orientation of drug design is indefinite. In this work, 10 representative cancer drugs with various properties are used to bind with P-gp by molecular dynamics simulation. Binding free energy between P-gp and 10 drugs ranges −139 to −253 kJ/mol. It reveals that the promiscuity nature of P-gp is in light of the similar binding free energy in separate P-gp-ligand binding systems. The binding effect of P-gp and drugs correlates well with the size of drugs and has no apparent correlation with the polarity of each drug. The key reason is that van der Waal’s interaction occupies most of the total binding free energy, and it is led by the number of atoms in the drugs. Two transmembrane segments (TM6 and TM12) and three types of amino acids (PHE, MET, and GLN) are vital in binding drugs with van der Waal’s energy, which evident the influence between binding stability and size of drugs. This work provides the cause and theoretical basis for the promiscuity nature of P-gp. Communicated by Ramaswamy H. Sarma
Direct Detection of Primordial Gravitational Waves in a BSI Inflationary Model
Creators: name: Polarski, D.
Publisher: name: arXiv
Year: 1999
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the possibility for a direct detection by future space interferometers of the stochastic gravitational wave (GW) background generated during the inflationary stage in a class of viable $Λ$CDM BSI models. At frequencies around $10^{-3}$Hz, maximal values $Ω_{gw}(ν)\sim 3\times 10^{-15}$ are found, an improvement of about one order of magnitude compared to single-field, slow-roll inflationary models. This is presumably not sufficient in order to be probed in the near future.
description: to appear in Phys. Lett. B, (uses LaTeX, 10 pages)
title: Die Wahl des ICR bei der Rekonstruktion der Brust durch DIEP Lappenplastik
Creators: name: Bergmann, Philipp A.
name: Shahmiri-Zimmermann, Shanly
name: Lohmeyer, Jörn A.
name: Keck, Maike
name: Wittig, Klaus
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Einleitung: Bei elektiven Brustrekonstruktionen mittels DIEP Lappenplastiken stellen wir die A. thoracia interna sowie ihre Begleitvene(n) im Bereich des 2. , 3. bzw. 4. Intercostalraumes (ICR) dar. Erscheint der ICR subjektiv zu eng, entfernen wir die angrenzende Rippe partiell oder auch vollständig.[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 50. Jahrestagung der Deutschen Gesellschaft der Plastischen, Rekonstruktiven und Ästhetischen Chirurgen (DGPRÄC), 24. Jahrestagung der Vereinigung der Deutschen Ästhetisch-Plastischen Chirurgen (VDÄPC)
Chespirito lloydi Ferreira & Keller & Branham 2020, new species
Creators: name: Ferreira, Vinicius S.
name: Keller, Oliver
name: Branham, Marc A.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Lampyridae
Chespirito
Chespirito lloydi

description: Chespirito lloydi new species  u r n:l s i d: z o o b a n k.o r g:a c t: 6F E0 5 4 8 1- 6 1 1 B -4 A A A -8 E 7 6 - 05A22E18DE79
Figs. 1B, 2B, 3B, 4B, 6B, 6E, 7.
  Type material (4). Holotype:  1 male: 10 mi. W. El Salto; Dgo. MEX. 29.VI.1964; J.E.H. Martin/ HOLOTYPE; C. lloydi; new species; Ferreira det. 2020 (CNC). Paratypes: 3 males: 24 mi. W. La Ciudad; Dgo. MEX. VI. 22.64; H.F. Howden/ PARATYPE; C. lloydi; new species; Ferreira det. 2020 (CNC).
 Etymology. This species is named in honor of Dr. James E. Lloyd, Professor Emeritus from the University of Florida, who has spent 56 years studying fireflies and their behavior, especially in the genus Photuris. Professor Lloyd passed away on 18 July 2020. It is our privilege to name this species in his honor for his dedication and contributions to the study of Lampyridae.
description: Published as part of Ferreira, Vinicius S., Keller, Oliver & Branham, Marc A., 2020, Multilocus Phylogeny Support the Nonbioluminescent Firefly Chespirito as a New Subfamily in the Lampyridae (Coleoptera: Elateroidea), pp. 1-13 in Insect Systematics and Diversity (AIFB) (AIFB) 4 (6) on page 8, DOI: 10.1093/isd/ixaa014, http://zenodo.org/record/7168296
Additional file of Analysis of tumor environmental response and oncogenic pathway activation identifies distinct basal and luminal features in HER2-related breast tumor subtypes
Creators: name: Gatza, Michael L
name: Hsiu-Ni Kung
name: Blackwell, Kimberly L
name: Dewhirst, Mark W
name: Marks, Jeffrey R
name: Jen-Tsan Chi
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file of Analysis of tumor environmental response and oncogenic pathway activation identifies distinct basal and luminal features in HER2-related breast tumor subtypes
Investigation of DNA denaturation in Peyrard-Bishop-Dauxois model by molecular dynamics method
Creators: name: Likhachev, I. V.
name: Lakhno, V. D.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: Biomolecules (q-bio.BM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: The phase transition of $(PolyA/PolyT)_{100}$ duplex into the denaturated state is studied in the Peyrard-Bishop-Dauxois model by the method of direct molecular-dynamical modeling. The temperature dependencies of the total energy and heat capacity of the duplex are calculated. The approach applied can be used to calculate the statistical properties of the duplexes of any length and nucleotide composition.
description: 6 pages, 4 figures
Intermittency transitions to strange nonchaotic attractors in a quasiperiodically driven Duffing oscillator
Creators: name: Venkatesan, A.
name: Lakshmanan, M.
name: Prasad, A.
name: Ramaswamy, R.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Different mechanisms for the creation of strange nonchaotic attractors (SNAs) are studied in a two-frequency parametrically driven Duffing oscillator. We focus on intermittency transitions in particular, and show that SNAs in this system are created through quasiperiodic saddle-node bifurcations (Type-I intermittency) as well as through a quasiperiodic subharmonic bifurcation (Type-III intermittency). The intermittent attractors are characterized via a number of Lyapunov measures including the behavior of the largest nontrivial Lyapunov exponent and its variance as well as through distributions of finite-time Lyapunov exponents. These attractors are ubiquitous in quasiperiodically driven systems; the regions of occurrence of various SNAs are identified in a phase diagram of the Duffing system.
description: 24 pages, RevTeX 4, 12 EPS figures
title: Prospektiver Vergleich von zwei unterschiedlichen Umbilikoplastik-Techniken hinsichtlich Komplikationen und ästhetischer Ergebnisse
Creators: name: Spengler, Claas
name: Mett, Roland
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Die Rekonstruktion des Bauchnabels im Rahmen einer Abdominoplastik ist ein kleiner, hinsichtlich des ästhetischen Ergebnisses und der Versorgung möglicherweise präexistenter Nabelhernien jedoch wichtiger Schritt. Es existieren mittlerweile zahlreiche Umbilikoplastik-Techniken, jedoch [zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 50. Jahrestagung der Deutschen Gesellschaft der Plastischen, Rekonstruktiven und Ästhetischen Chirurgen (DGPRÄC), 24. Jahrestagung der Vereinigung der Deutschen Ästhetisch-Plastischen Chirurgen (VDÄPC)
The Theory of Stochastic Space-Time. 1. Gravitation as a Quantum Diffusion
Creators: name: Zakir, Zahid
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The Nelson stochastic mechanics of inhomogeneous quantum diffusion in flat spacetime with a tensor of diffusion can be described as a homogeneous one in a Riemannian manifold where this tensor of diffusion plays the role of a metric tensor. It is shown that the such diffusion accelerates both a sample particle and a local frame such that their mean accelerations do not depend on their masses. This fact, explaining the principle of equivalence, allows one to represent the curvature and gravitation as consequences of the quantum fluctuations. In this diffusional treatment of gravitation it can be naturally explained the fact that the energy density of the instantaneous Newtonian interaction is negative defined.
description: Published in: "Z.Zakir (2003) Structure of Space-Time and Matter. CTPA, Tashkent."
Additional file 5 of Chondroitin sulfates play a major role in breast cancer metastasis: a role for CSPG4 and CHST11gene expression in forming surface P-selectin ligands in aggressive breast cancer cells
Creators: name: Cooney, Craig A
name: Jousheghany, Fariba
name: Aiwei Yao-Borengasser
name: Bounleut Phanavanh
name: Gomes, Tina
name: Kieber-Emmons, Ann Marie
name: Siegel, Eric R
name: Suva, Larry J
name: Soldano Ferrone
name: Kieber-Emmons, Thomas
name: Behjatolah Monzavi-Karbassi
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Hematology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology

description: Authors’ original file for figure 3
title: Vergleich zweier unterschiedlicher Techniken zur Formung des Bauchnabels nach DIEP-Lappenplastik
Creators: name: Keck, Maike
name: Alawadi, Mai
name: Bergmann, Philipp
name: Lohmeyer, Jörn
name: Wittig, Klaus
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Einleitung: Bei der Formung des Bauchnabels im Rahmen des Bauchdeckenverschlusses nach DIEP-Lappenplastik steht dem Chirurgen eine breite Auswahl an möglichen Techniken zur Verfügung. Ziel dieser Untersuchung war es zwei unterschiedliche Techniken (queroval, kaudales Läppchen), die an[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 50. Jahrestagung der Deutschen Gesellschaft der Plastischen, Rekonstruktiven und Ästhetischen Chirurgen (DGPRÄC), 24. Jahrestagung der Vereinigung der Deutschen Ästhetisch-Plastischen Chirurgen (VDÄPC)
Persistent currents in a Moebius ladder: A test of interchain coherence of interacting electrons
Creators: name: Mila, Frederic
name: Stafford, Charles
name: Capponi, Sylvain
Publisher: name: arXiv
Year: 1997
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Persistent currents in a Moebius ladder are shown to be very sensitive to the effects of intrachain interactions on the hopping of electrons between chains. Their periodicity as a function of flux is doubled for strong enough repulsive interactions because electrons cannot hop coherently between the chains and have to travel along the full edge of the Moebius ladder, thus encircling the flux twice. Mesoscopic devices that should enable one to observe these effects are proposed.
description: 4 Latex pages with 5 encapsulated figures. Requires psfig.sty
The Hadamard Condition for Dirac Fields and Adiabatic States on Robertson-Walker Spacetimes
Creators: name: Hollands, S
Publisher: name: arXiv
Year: 1999
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We characterise the homogeneous and isotropic gauge invariant and quasifree states for free Dirac quantum fields on Robertson-Walker spacetimes in any even dimension. Using this characterisation, we construct adiabatic vacuum states of order $n$ corresponding to some Cauchy surface. We then show that any two such states (of sufficiently high order) are locally quasi-equivalent. We propose a microlocal version of the Hadamard condition for spinor fields on arbitrary spacetimes, which is shown to entail the usual short distance behaviour of the twopoint function. The polarisation set of these twopoint functions is determined from the Dencker connection of the spinorial Klein-Gordon operator which we show to equal the (pull-back) of the spin connection. Finally it is demonstrated that adiabatic states of infinite order are Hadamard, and that those of order $n$ correspond, in some sense, to a truncated Hadamard series and will therefore allow for a point splitting renormalisation of the expected stress-energy tensor.
description: 29 pages, Latex, no figures. v2: corrections in the proof of Thm. IV.1. v3: published version
Cosmology and Local Physics
Creators: name: Ellis, George F R
Publisher: name: arXiv
Year: 2001
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: This article is dedicated to the memory of Dennis Sciama. It revisits a series of issues to which he devoted much time and effort, regarding the relationship between local physics and the large scale structure of the universe - in particular, Olber's paradox, Mach's principle, and the various arrows of time. Thus the focus is various ways in which local physics is influenced by the universe itself.
description: 20 pages LaTeX
The Complex Ginzburg-Landau Equation in the Presence of Walls and Corners
Creators: name: Eguiluz, Victor M.
name: Hernandez-Garcia, Emilio
name: Piro, Oreste
Publisher: name: arXiv
Year: 2000
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We investigate the influence of walls and corners (with Dirichlet and Neumann boundary conditions) in the evolution of twodimensional autooscillating fields described by the complex Ginzburg-Landau equation. Analytical solutions are found, and arguments provided, to show that Dirichlet walls introduce strong selection mechanisms for the wave pattern. Corners between walls provide additional synchronization mechanisms and associated selection criteria. The numerical results fit well with the theoretical predictions in the parameter range studied.
description: 10 pages, 9 figures; for related work visit http://www.nbi.dk/~martinez
Anti-gastric cancer effect of Salidroside through elevating miR-99a expression
Creators: name: Yang, Lin
name: Yu, Yanan
name: Zhang, Qi
name: Li, Xiaoyu
name: Zhang, Cuiping
name: Mao, Tao
name: Liu, Siliang
name: Tian, Zibin
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Physiology
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences

description: Salidroside is an active ingredient extracted from Rhodiola rosea that has anti-tumor activities. The current paper attempted to assess the impact of Salidroside on gastric cancer (GC) and explore the potential mechanism. GC cell lines (SNU-216 and MGC803) and gastric epithelial cell line GES-1 were treated with Salidroside. CCK-8 assay, colony formation assay, flow cytometry and Transwell assay were respectively performed to evaluate GC cells phenotype. qRT-PCR and western blot were conducted to reveal the downstream genes and signaling of Salidroside. We found that 800 μM Salidroside was capable of reducing GC cells viability, while has no such impacts on GES-1 cells. Salidroside inhibited GC cells proliferation, migration, invasion and promoted apoptosis, which coupled with the down-regulation of p21, Bcl-2, MMP2, RhoA, p-ROCK1, Vimentin and the up-regulations of CyclinD1, Bax, cleaved caspases. miR-99a was found to be highly expressed in response to Salidroside treatment. Besides, the inhibition of MAPK/ERK and PI3K/AKT signaling induced by Salidroside was attenuated by miR-99a silence and in this process, IGF1R worked as a target of miR-99a. The anti-GC effect of Salidroside was also confirmed in a mouse model of GC. The promoting effect of Salidroside on miR-99a expression was also verified in vivo. Furthermore, Salidroside promoted the cisplatin-sensitivity of SGC7901/DDP cells. In conclusion, this study demonstrated that Salidroside possessed anti-GC effects through regulating miR-99a/IGF1R axis and inhibiting MAPK/ERK and PI3K/AKT pathways.
The use of the algebraic programming in teaching general relativity
Creators: name: Ghergu, Florin A.
name: Vulcanov, Dumitru N.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Physics Education (physics.ed-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The article presents some aspects on the use of computer in teaching general relativity for undergraduate students with some experience in computer manipulation. The article presents some simple algebraic programming (in REDUCE+EXCALC package) procedures for obtaining and the study of some exact solutions of the Einstein equations in order to convince a dedicated student in general relativity about the utility of a computer algebra system.
description: Latex, 13 pages. Computing in Science and Engineering (accepted)
Gonimbrasia macrothyris
Creators: name: Mbata, Keith J.
name: Prins, Jurate De
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Saturniidae
Gonimbrasia
Gonimbrasia macrothyris

description: Gonimbrasia macrothyris (Rothschild, 1906)
COMMON NAME(S): Saturniid.
SYNONYM(S): Bunaea heroum Oberth ̧r, 1910a; Imbrasia lubumbashii (Seydel, 1933); Bunaea regalis Rebel, 1906.
IUCN STATUS: Not Evaluated (NE).
DISTRIBUTION: Angola, Democratic Republic of Congo, Kenya, Malawi, South Africa, Tanzania, Zambia, Zimbabwe.
LOCALITY IN ZAMBIA: ‘Lusaka’, in Lusaka Province.
LARVAL HOSTPLANT(S):Host plants of the taxon include:one Euphorbiaceae species (Chaetocarpus africanus Pax), one Connaraceae species (Manotes expansa Sol. ex Planch.), one Ochnaceae species (Ochna afzelii R.Br. ex Oliv.), one Anacardiaceae species (Mangifera indica L.) and one Fabaceae species (Acacia auriculiformis Benth.) all in the Democratic Republic of Congo (Latham 2003); one Fabaceae species (Julbernardia sp.) and one Caesalpiniaceae species (Brachystegia spiciformis Benth.) in an unnamed country or countries in Africa (Pinhey 1972b). No specific host plants have been reported for the taxon in Zambia.
SOURCES: De Prins & De Prins 2022; Latham 2003; Pinhey 1972b; Saturniidae of the World 2019.
description: Published as part of Mbata, Keith J. & Prins, Jurate De, 2023, Annotated checklist of moths of Zambia (Insecta: Lepidoptera), pp. 1-503 in Zootaxa 5354 (1) on page 159, DOI: 10.11646/zootaxa.5354.1.1, http://zenodo.org/record/10130434
title: Religious Regulations And Persecutions In Contemporary Indonesia: A Case Study Of The Ahmadiyah Community
Creators: name: Cerdikwan, Cerdikwan
Publisher: name: The Australian National University
Year: 2025

description: Most research on minority rights and religious conflict emphasises national inter-religious tensions. This study shifts the focus to intra-religious conflict at the local level, examining why Ahmadiyah followers, a Muslim minority in Indonesia, face persecution. Despite 568 recorded cases across 56 districts and cities, not all regions with restrictive religious regulations experience significant persecution, suggesting that other factors are at play. This study employs a comparative case study design, focusing on Depok, Bogor, and Bandung City, and draws on 70 in-depth interviews with stakeholders including mayoral candidates, religious leaders, Ahmadiyah followers, Islamic vigilante group leaders, and Muslim civil society organisations. The findings reveal a strong link between local political dynamics, particularly during mayoral elections, and the persecution of Ahmadiyah followers. Nearly 80% of these incidents occurred around elections, as candidates exploited Ahmadiyah issues to appeal to conservative Muslim voters. Three primary factors contribute to this persecution: (1) intense political competition, (2) the influence of conservative religious leaders, and (3) the weak impact of Muslim civil society organisations advocating for religious pluralism. This means that the persecution of the Ahmadiyah community is driven by local political dynamics, particularly during mayoral elections and intense political competition. Persecution escalates when there is fierce political rivalry, as candidates exploit the Ahmadiyah issue to enhance their Islamic credentials, gain votes from conservative Muslims, and secure support from Islamic hardliners and conservative local religious leaders. Additionally, the weak influence of Muslim civil society organisations supporting religious pluralism contributes to this persecution. This research underscores how electoral strategies at the local level can intensify religious persecution, offering insights into how such conflicts might be mitigated.
Radio Resource Management for Dynamic Channel Borrowing Scheme in Wireless Networks
Creators: name: Hossain, Mohammad Arif
name: Ahmed, Shakil
name: Chowdhury, Mostafa Zaman
Publisher: name: arXiv
Year: 2018
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Provisioning of Quality of Service (QoS) is the key concern for Radio Resource Management now-a-days. In this paper, an efficient dynamic channel borrowing architecture has been proposed that ensures better QoS. The proposed scheme lessens the problem of excessive overall call blocking probability without sacrificing bandwidth utilization. If a channel is borrowed from adjacent cells and causing interference, we also propose architecture that diminishes the interference problem. The numerical results show comparison between the proposed scheme and the conventional scheme before channel borrowing process. The results show a satisfactory performance that are in favor of the proposed scheme, in case of overall call blocking probability, bandwidth utilization and interference management.
description: International Conference on Informatics, Electronics & Vision (ICIEV), May 2014, Dhaka, Bangladesh
Comment on ``Duality relations for Potts correlation functions''
Creators: name: Jacobsen, Jesper Lykke
Publisher: name: arXiv
Year: 1997
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In a recent paper by Wu (Phys. Lett. A 228, 43-47 (1997)) the three-point correlation of the q-state Potts model on a planar graph was related to ratios of dual partition functions under fixed boundary conditions. It was claimed that the method employed could straightforwardly be applied to higher correlations as well; this is however not true. By explicitly considering the four-point correlation we demonstrate how the appearence of non-well-nested connectivities invalidates the method.
description: 7 pages in RevTeX, no figures. Submitted to Phys. Lett. A
A Factor Graph Approach to Automated Design of Bayesian Signal Processing Algorithms
Creators: name: Cox, Marco
name: van de Laar, Thijs
name: de Vries, Bert
Publisher: name: arXiv
Year: 2018
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: The benefits of automating design cycles for Bayesian inference-based algorithms are becoming increasingly recognized by the machine learning community. As a result, interest in probabilistic programming frameworks has much increased over the past few years. This paper explores a specific probabilistic programming paradigm, namely message passing in Forney-style factor graphs (FFGs), in the context of automated design of efficient Bayesian signal processing algorithms. To this end, we developed "ForneyLab" (https://github.com/biaslab/ForneyLab.jl) as a Julia toolbox for message passing-based inference in FFGs. We show by example how ForneyLab enables automatic derivation of Bayesian signal processing algorithms, including algorithms for parameter estimation and model comparison. Crucially, due to the modular makeup of the FFG framework, both the model specification and inference methods are readily extensible in ForneyLab. In order to test this framework, we compared variational message passing as implemented by ForneyLab with automatic differentiation variational inference (ADVI) and Monte Carlo methods as implemented by state-of-the-art tools "Edward" and "Stan". In terms of performance, extensibility and stability issues, ForneyLab appears to enjoy an edge relative to its competitors for automated inference in state-space models.
description: Accepted for publication in the International Journal of Approximate Reasoning
On some products of commutators in an associative ring
Creators: name: Deryabina, Galina
name: Krasilnikov, Alexei
Publisher: name: arXiv
Year: 2018
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16R10, 16R40

description: Let $A$ be a unital associative ring and let $T^{(k)}$ be the two-sided ideal of $A$ generated by all commutators $[a_1, a_2, \dots , a_k]$ $(a_i \in A)$ where $[a_1, a_2] = a_1 a_2 - a_2 a_1$, $[a_1, \dots , a_{k-1}, a_k] = \bigl[ [a_1, \dots , a_{k-1}], a_k \bigr]$ $(k >2)$. It has been known that, if either $m$ or $n$ is odd then \[ 6 \, [a_1, a_2, \dots , a_m] [b_1, b_2, \dots , b_n] \in T^{(m+n-1)} \] for all $a_i, b_j \in A$. This was proved by Sharma and Srivastava in 1990 and independently rediscovered later (with different proofs) by various authors. The aim of our note is to give a simple proof of the following result: if at least one of the integers $m,n$ is odd then, for all $a_i, b_j \in A$, \[ 3 \, [a_1, a_2, \dots , a_m] [b_1, b_2, \dots , b_n] \in T^{(m+n-1)}. \] Since it has been known that, in general, \[ [a_1, a_2, a_3] [b_1, b_2] \notin T^{(4)}, \] our result cannot be improved further for all $m, n$ such that at least one of them is odd.
description: 7 pages
Using Markov chain Monte Carlo methods for estimating parameters with gravitational radiation data
Creators: name: Christensen, Nelson
name: Meyer, Renate
Publisher: name: arXiv
Year: 2001
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a Bayesian approach to the problem of determining parameters for coalescing binary systems observed with laser interferometric detectors. By applying a Markov Chain Monte Carlo (MCMC) algorithm, specifically the Gibbs sampler, we demonstrate the potential that MCMC techniques may hold for the computation of posterior distributions of parameters of the binary system that created the gravity radiation signal. We describe the use of the Gibbs sampler method, and present examples whereby signals are detected and analyzed from within noisy data.
description: 21 pages, 10 figures
Spin-wave phase inverter upon a single nanodefect
Creators: name: Dobrovolskiy, O. V.
name: Sachser, R.
name: Bunyaev, S. A.
name: Navas, D.
name: Bevz, V. M.
name: Zelent, M.
name: Smigaj, W.
name: Rychly, J.
name: Krawczyk, M.
name: Vovk, R. V.
name: Huth, M.
name: Kakazei, G. N.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Local modification of magnetic properties of nanoelements is a key to design future-generation magnonic devices, in which information is carried and processed via spin waves. One of the biggest challenges here is to fabricate simple and miniature phase-controlling elements with broad tunability. Here, we successfully realize such spin-wave phase shifter upon a single nanogroove milled by focused ion beam in a Co-Fe microsized magnonic waveguide. By varying the groove depth and the in-plane bias magnetic field we continuously tune the spin-wave phase and experimentally evidence a complete phase inversion. The microscopic mechanism of the phase shift is based on the combined action of the nanogroove as a geometrical defect and the lower spin-wave group velocity in the waveguide under the groove where the magnetization is reduced due to the incorporation of Ga ions during the ion-beam milling. The proposed phase shifter can easily be on-chip integrated with spin-wave logic gates and other magnonic devices. Our findings are crucial for designing nano-magnonic circuits and for the development of spin-wave nano-optics.
description: 8 pages, 6 figures
Moiré Intralayer Excitons in a MoSe$_2$/MoS$_2$ Heterostructure
Creators: name: Zhang, Nan
name: Surrente, Alessandro
name: Baranowski, Michal
name: Maude, Duncan K.
name: Gant, Patricia
name: Castellanos-Gomez, Andres
name: Plochocka, Paulina
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Spatially periodic structures with a long range period, referred to as moiré pattern, can be obtained in van der Waals bilayers in the presence of a small stacking angle or of lattice mismatch between the monolayers. Theoretical predictions suggest that the resulting spatially periodic variation of the band structure modifies the optical properties of both intra and interlayer excitons of transition metal dichalcogenides heterostructures. Here, we report on the impact of the moiré pattern formed in a MoSe$_2$/MoS$_2$ heterobilayer encapsulated in hexagonal boron nitride. The periodic in-plane potential results in a splitting of the MoSe$_2$ exciton and trion in both emission and absorption spectra. The observed energy difference between the split peaks is fully consistent with theoretical predictions.
description: just accepted in Nano Letters (10.1021/acs.nanolett.8b03266)
A model for interacting instabilities and texture dynamics of patterns
Creators: name: Das, Alaka
name: Kumar, Krishna
name: Ganesh, Narayanasamy
Publisher: name: arXiv
Year: 2000
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: A simple model to study interacting instabilities and textures of resulting patterns for thermal convection is presented. The model consisting of twelve-mode dynamical system derived for periodic square lattice describes convective patterns in the form of stripes and patchwork quilt. The interaction between stationary zig-zag stripes and standing patchwork quilt pattern leads to spatiotemporal patterns of twisted patchwork quilt. Textures of these patterns, which depend strongly on Prandtl number, are investigated numerically using the model. The model also shows an interesting possibility of a multicritical point, where stability boundaries of four different structures meet.
description: 4 pages including 4 figures, page width revised
Recovering stellar population parameters via different population models and stellar libraries
Creators: name: Ge, Junqiang
name: Mao, Shude
name: Lu, Youjun
name: Cappellari, Michele
name: Yan, Renbin
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Three basic ingredients are required to generate a simple stellar population (SSP) library, i.e., an initial mass function (IMF), a stellar evolution model/isochrones, and an empirical/theoretical stellar spectral library. However, there are still some uncertainties to the determination and understanding of these ingredients. We perform the spectral fitting to test the relative parameter offsets between these uncertainties using two different stellar population models, two different empirical stellar libraries, two different isochrones, and the Salpeter and Chabrier IMFs. Based on these setups, we select five SSP libraries generated with the Galaxev/STELIB and Vazdekis/MILES models, and apply them to the pPXF full-spectrum fitting of both MaNGA and mock spectra. We find that: 1) Compared to the Galaxev/STELIB model, spectral fitting qualities with the Vazdekis/MILES model have significant improvements for those metal-rich (especially over-solar) spectra, which cause better reduced $χ^2$ distributions and more precisely fitted absorption lines. This might due to the lack of metal rich stars in the empirical STELIB library, or code improvement of the Vazdekis model. 2) When applying the Vazdekis/MILES model for spectral fitting, the IMF variation will lead to not only a systematic offset in $M_*/L_r$, but also offsets in age and metallicity, and these offsets increase with increasing stellar population ages. However, the IMF-variation caused metallicity offsets disappear in the case of Galaxev/STELIB based libraries. 3) The Padova2000 model provides a better match to the MaNGA galaxy spectra at [M/H]$_L-1.0$. Current tests suggest that spectral fitting with the Vazdekis/MILES+BaSTI combination would be a better choice for local galaxies.
description: 19 pages, 17 figures, accepted for publication in MNRAS
Interference Declination for Dynamic Channel Borrowing Scheme in Wireless Network
Creators: name: Ahmed, Shakil
name: Hossain, Mohammad Arif
name: Chowdhury, Mostafa Zaman
Publisher: name: arXiv
Year: 2018
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: In modern days, users in the wireless networks are increasing drastically. It has become the major concern for researchers to manage the maximum users with limited radio resource. Interference is one of the biggest hindrances to reach the goal. In this paper, being deep apprehension of the issue, an efficient dynamic channel borrowing scheme is proposed that ensures better Quality of Service (QoS) with interference declination. We propose that if channels are borrowed from adjacent cells, cell bifurcation will be introduced that ensures interference declination when the borrowed channels have same frequency band. We also propose a scheme that inactivates the unoccupied interfering channels of adjacent cells, instead of cell bifurcation for interference declination. The simulation outcomes show acceptable performances in terms of SINR level, system capacity, and outage probability compared to conventional scheme without interference declination that may attract the considerable interest for the users.
description: International Conference on Informatics, Electronics & Vision (ICIEV), May 2014, Dhaka, Bangladesh
Spin-Peierls vs. Peierls distortions in a family of conjugated Polymers
Creators: name: Garcia-Bach, M. A.
name: Valenti, R.
name: Klein, D. J.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Distortions in a family of conjugated polymers are studied within two complementary approaches, i.e. within a many-body Valence Bond (VB) approach using a transfer matrix technique to treat the Heisenberg model of the systems, and also in terms of the tight-binding band-theoretic model with interactions limited to nearest neighbors. The computations indicate that both methods predict the presence or absence of the same distortions in most of the polymers studied.
description: Latex209 (twocolumn revtex), 11 pages; 9 figures available by mail from authors; Phys. Rev. B (in press)
High thermoelectric performance in the hexagonal bilayer structure consisting of light boron and phosphorus elements
Creators: name: Zhou, Z. Z.
name: Liu, H. J.
name: Fan, D. D.
name: Cao, G. H.
name: Sheng, C. Y.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Two-dimensional layered materials have attracted tremendous attentions due to their extraordinary physical and chemical properties. Using first-principles calculations and Boltzmann transport theory, we give an accurate prediction of the thermoelectric properties of boron phosphide (BP) bilayer, where the carrier relaxation time is treated within the framework of electron-phonon coupling. It is found that the lattice thermal conductivity of BP bilayer is much lower than that of its monolayer structure, which can be attributed to the presence of van der Waals interactions. On the other hand, the graphene-like BP bilayer shows very high carrier mobility with a moderate band gap of 0.88 eV. As a consequence, a maximum p-type ZT value of ~1.8 can be realized along the x-direction at 1200 K, which is amazingly high for systems consisting of light elements only. Moreover, we obtain almost identical p- and n-type ZT of ~1.6 along the y-direction, which is very desirable for fabrication of thermoelectric modules with comparative efficiencies. Collectively, these findings demonstrate great advantages of the layered structures containing earth-abundant elements for environment-friendly thermoelectric applications.
A nonlinear detection algorithm for periodic signals in gravitational wave detectors
Creators: name: Sylvestre, Julien
Publisher: name: arXiv
Year: 2001
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present an algorithm for the detection of periodic sources of gravitational waves with interferometric detectors that is based on a special symmetry of the problem: the contributions to the phase modulation of the signal from the earth rotation are exactly equal and opposite at any two instants of time separated by half a sidereal day; the corresponding is true for the contributions from the earth orbital motion for half a sidereal year, assuming a circular orbit. The addition of phases through multiplications of the shifted time series gives a demodulated signal; specific attention is given to the reduction of noise mixing resulting from these multiplications. We discuss the statistics of this algorithm for all-sky searches (which include a parameterization of the source spin-down), in particular its optimal sensitivity as a function of required computational power. Two specific examples of all-sky searches (broad-band and narrow-band) are explored numerically, and their performances are compared with the stack-slide technique (P. R. Brady, T. Creighton, Phys. Rev. D, 61, 082001).
description: 9 pages, 3 figures, to appear in Phys. Rev. D
Gravitation as a Quantum Diffusion
Creators: name: Zakir, Zahid
Publisher: name: arXiv
Year: 1999
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Inhomogeneous Nelson's diffusion in flat spacetime with a tensor of diffusion can be described as a homogeneous one in a Riemannian manifold with this tensor of diffusion as a metric tensor. The influence of matter to the energy density of the stochastic background (vacuum) is considered. It is shown that gravitation can be represented as inhomogeneity of the quantum diffusion, the Einstein equations for the metrics can be derived as the equations for the corresponding tensor of diffusion.
description: Published in: "Z.Zakir (2003) Structure of Space-Time and Matter, CTPA, Tashkent."
Directional spreading of a viscous droplet on a conical fibre
Creators: name: Chan, Tak Shing
name: Yang, Fan
name: Carlson, Andreas
Publisher: name: arXiv
Year: 2019
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: If a droplet is placed on a substrate with a conical shape it spontaneously starts to spread in the direction of a growing fibre radius. We describe this capillary spreading dynamics by developing a lubrication approximation on a cone and by the perturbation method of matched asymptotic expansions. Our results show that the droplet appears to adopt a quasi-static shape and the predictions of the droplet shape and spreading velocity from the two mathematical models are in excellent agreement for a wide range of slip lengths, cone angles and equilibrium contact angles. At the contact line regions, a large pressure gradient is generated by the mismatch between the equilibrium contact angle and the apparent contact angle that maintains the viscous flow. It is the conical shape of the substrate that breaks the front/rear droplet symmetry in terms of the apparent contact angle, which is larger at the thicker part of the cone than that at its thinner part. Consequently, the droplet is predicted to move from the cone tip to its base, consistent with experimental observations.
Supersonic dynamics of guided magnetic flux quanta
Creators: name: Dobrovolskiy, O. V.
name: Bevz, V. M.
name: Begun, E.
name: Sachser, R.
name: Vovk, R. V.
name: Huth, M.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The dynamics of Abrikosov vortices in superconductors is usually limited to vortex velocities $v\simeq1$ km/s above which samples abruptly transit into the normal state. In the Larkin-Ovchinnikov framework, near the critical temperature this is because of a flux-flow instability triggered by the reduction of the viscous drag coefficient due to the quasiparticles leaving the vortex cores. While the existing instability theories rely upon a uniform spatial distribution of vortex velocities, the measured (mean) value of $v$ is always smaller than the maximal possible one, since the distribution of $v$ never reaches the $δ$-functional shape. Here, by guiding magnetic flux quanta at a tilt angle of $15^\circ$ with respect to a Co nanostripe array, we speed up vortices to supersonic velocities. These exceed $v$ in the reference as-grown Nb films by almost an order of magnitude and are only a factor of two smaller than the maximal vortex velocities observed in superconductors so far. We argue that such high $v$ values appear in consequence of a collective dynamic ordering when all vortices move in the channels with the same pinning strength and exhibit a very narrow distribution of $v$. Our findings render the well-known vortex guiding effect to open prospects for investigations of ultrafast vortex dynamics.
description: 6 pages, 4 figures
Linked data in practice: An RDF-based approach with SPARQLing Genomics
Creators: name: Böhmer, Jasmin K.
name: Janssen, Roel
Publisher: name: Zenodo
Year: 2020
Subjects: Linked Data
Omics
Omics Data
RDF
SPARQL
FAIR data
Ontologies
Controlled Vocabulary
Interoperability

description: Presentation given for X-omics online workshop series Part 2 – "Linked Data in Practice: An RDF-based Approach with SPARQLing-genomics", Monday June 22th 2020, 12 PM – 2 PM CEST. Please visit https://github.com/UMCUGenetics/sparqling-genomics and https://www.sparqling-genomics.org/ for updates. The whole programme and session recordings are available online: https://x-omics.nl/x-omics-online-workshop-series-strategies-to-overcome-your-challenges-in-multi-omics-data-integration
description: The PDF version depicts the original slide-set, PPTX and ODP for reusing slides. X-Omics is a project (partially) funded by NWO, project 184.034.019
The Effect of Evanescent Modes and Chaos on Deterministic Scattering in Electron Waveguides
Creators: name: Akguc, G. B.
name: Reichl, L. E.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Statistical properties of Wigner delay times and the effect of evanescent modes on the deterministic scattering of an electron matter wave from a classically chaotic 2-d electron waveguide are studied for the case of 2, 6, and 16 propagating modes. Deterministic reaction matrix theory for this system is generalized to include the effect of evanescent modes on the scattering process. Inclusion of evanescent modes can change the positions of resonance poles in the complex energy plane and can delay electron scattering, particularly at energies where new channels open. The statistical properties of the Wigner delay times for the deterministic scattering process are compared to the predictions of random reaction matrix theory.
description: 28 pages, 8 ps 4 jpg formatted figures