cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Studien zur Seroprävalenz von SARS-CoV-2 in Deutschland und international
Creators: name: Poethko-Müller, Christina
name: Prütz, Franziska
name: Buttmann-Schweiger, Nina
name: Fiebig, Julia
name: Sarganas, Giselle
name: Seeling, Stefanie
name: Thamm, Roma
name: Baumann, Jan
name: Hamouda, Osamah
name: Offergeld, Ruth
name: Schaade, Lars
name: Lampert, Thomas
name: Neuhauser, Hannelore
Publisher: name: Robert Koch-Institut
Year: 2020
Subjects: subject: Seroepidemiologische Studien
subject: Antikörper
subject: SARS-COV-2
subject: Seroprävalenz
subject: Infektionsepidemiologie
subject: 610 Medizin und Gesundheit

description: Seit Beginn des Jahres 2020 hat sich das Coronavirus SARS-CoV-2 in rasantem Tempo weltweit ausgebreitet. Studien zur Häufigkeit von Antikörpern gegen SARS-CoV-2 in der Bevölkerung dienen dazu, den Anteil der Personen mit einer bereits durchgemachten Infektion zu ermitteln. Außerdem sollen sie Rückschlüsse auf die Dunkelziffer, das heißt die anhand von Meldedaten nicht identifizierten Infektionen, liefern. Für eine Einordnung der Ergebnisse sind stichprobenbedingte Verzerrungen und Leistungsparameter der verwendeten Tests zu berücksichtigen. Das Robert Koch- Institut stellt auf seiner Webseite eine Übersicht seroepidemiologischer Studien in Deutschland zusammen, die laufend aktualisiert wird, um die wissenschaftliche Vernetzung und Kooperation zu unterstützen. Dazu werden nach einer Recherche, etwa in Pressemitteilungen, Studienregistereinträgen oder Vorabpublikationen, die Studienleitungen kontaktiert. Von den 40 angeschriebenen Studien hatten innerhalb kurzer Zeit 24 Studien Informationen zur Verfügung gestellt. Es kann zwischen Studien in der Allgemeinbevölkerung, in ausgewählten Bevölkerungsgruppen wie Gesundheitspersonal oder innerhalb bestehender Kohortenstudien differenziert werden. Der vorliegende Beitrag gibt einen Überblick über diese nationalen, aber auch ausgewählte internationale Studien. Auf Studien zu Kindern und Jugendlichen, denen mit Blick auf die Wiederaufnahme des Regelbetriebs in Kinderbetreuungseinrichtungen und Schulen ein besonderes Interesse entgegengebracht wird, wird gesondert eingegangen.
Compact Binary Merger Rate in Dark-Matter Spikes
Creators: name: Fakhry, Saeed
name: Salehnia, Zahra
name: Shirmohammadi, Azin
name: Yengejeh, Mina Ghodsi
name: Firouzjaee, Javad T.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Nowadays, the existence of supermassive black holes (SMBHs) in the center of galactic halos is almost confirmed. An extremely dense region referred to as dark-matter spike is expected to form around central SMBHs as they grow and evolve adiabatically. In this work, we calculate the merger rate of compact binaries in dark-matter spikes while considering halo models with spherical and ellipsoidal collapses. Our findings exhibit that ellipsoidal-collapse dark matter halo models can potentially yield the enhancement of the merger rate of compact binaries. Finally, our results confirm that the merger rate of primordial black hole binaries is consistent with the results estimated by the LIGO-Virgo detectors, while such results can not be realized for primordial black hole-neutron star binaries.
description: 13 pages; 5 figures; references added, typos were fixed
Synthesis and Evaluation of Nutrient Leaching From an Oleophilic Fertilizer Biofilter Soil Amendment
Creators: name: Wilkins, Jason
Publisher: name: Graduate Studies
Year: 2012
Subjects: subject: Engineering--Civil
subject: Water
subject: Nutrient
subject: Oleophilic

description: Laboratory column studies were used to quantify the nitrogen and phosphorus leaching dynamics from a biofilter soil, fertilizer amendments, and experimental controls throughout four years of simulated runoff application. The results showed that the biofilter soil starting materials were a significant source of nutrients, particularly for nitrogen. Compost was identified as the ideal nitrogen amendment, leaching only 7% of the mass initially added to the test column. This minimal washout response was attributed to the slow mineralization of humic materials. Lecithin and Nitroform® leached the lowest amount of phosphorus amongst the tested soil amendments, whereas the inclusion of polymerized tung oil with these nutrient sources (oleophilic fertilizer) only expedited phosphorus release. In contrast, the oleophilic fertilizer demonstrated a more controlled nitrogen release than the Lecithin and Nitroform® and this inconsistency was attributed to greater microbial nitrogen immobilization over phosphorus upon carbon based biostimulation.
Thermal Casimir effect for neutrino and electromagnetic fields in closed Friedmann cosmological model
Creators: name: Bezerra, V. B.
name: Mostepanenko, V. M.
name: Mota, H. F.
name: Romero, C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We calculate the total internal energy, total energy density and pressure, and the free energy for the neutrino and electromagnetic fields in Einstein and closed Friedmann cosmological models. The Casimir contributions to all these quantities are separated. The asymptotic expressions for both the total internal energy and free energy, and for the Casimir contributions to them are found in the limiting cases of low and high temperatures. It is shown that the neutrino field does not possess a classical limit at high temperature. As for the electromagnetic field, we demonstrate that the total internal energy has the classical contribution and the Casimir internal energy goes to the classical limit at high temperature. The respective Casimir free energy contains both linear and logarithmic terms with respect to the temperature. The total and Casimir entropies for the neutrino and electromagnetic fields at low temperature are also calculated and shown to be in agreement with the Nernst heat theorem.
description: 23 pages, to appear in Phys. Rev. D
Inflation in Weyl Scaling Invariant Gravity with $R^3$ Extensions
Creators: name: Wang, Qing-Yang
name: Tang, Yong
name: Wu, Yue-Liang
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The cosmological observations of cosmic microwave background and large-scale structure indicate that our universe has a nearly scaling invariant power spectrum of the primordial perturbation. However, the exact origin for this primordial spectrum is still unclear. Here, we propose the Weyl scaling invariant $R^2+R^3$ gravity that gives rise to inflation that is responsible for the primordial perturbation in the early universe. We develop both analytic and numerical treatments on inflationary observables, and find this model gives a distinctive scalar potential that can support two different patterns of inflation. The first one is similar to that occurs in the pure $R^2$ model, but with a wide range of tensor-to-scalar ratio $r$ from $\mathcal O(10^{-4})$ to $\mathcal O(10^{-2})$. The other one is a new situation with not only slow-roll inflation but also a short stage of oscillation-induced accelerating expansion. Both patterns of inflation have viable parameter spaces that can be probed by future experiments on cosmic microwave background and primordial gravitational waves.
description: 26 pages, 6 figures, match the published version in Phys.Rev.D
Effective String Theory and Nonlinear Lorentz Invariance
Creators: name: Aharony, Ofer
name: Dodelson, Matthew
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We study the low-energy effective action governing the transverse fluctuations of a long string, such as a confining flux tube in QCD. We work in the static gauge where this action contains only the transverse excitations of the string. The static gauge action is strongly constrained by the requirement that the Lorentz symmetry, that is spontaneously broken by the long string vacuum, is nonlinearly realized on the Nambu-Goldstone bosons. One solution to the constraints (at the classical level) is the Nambu-Goto action, and the general solution contains higher derivative corrections to this. We show that in 2+1 dimensions, the first allowed correction to the Nambu-Goto action is proportional to the squared curvature of the induced metric on the worldsheet. In higher dimensions, there is a more complicated allowed correction that appears at lower order than the curvature squared. We argue that this leading correction is similar to, but not identical to, the one-loop determinant (\sqrt{-h} R \Box^{-1} R) computed by Polyakov for the bosonic fundamental string.
description: 15 pages
The Aerodynamics of Rapid Area Change in Perching Manoeuvres
Creators: name: Polet, Delyle
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Fluid and Plasma
subject: Engineering--Mechanical
subject: Biomimicry
subject: Unsteady Fluid Dynamics
subject: Perching
subject: Bird Flight
subject: Rapid Area Change
subject: 3D Kinematics

description: This thesis presents a multidisciplinary study on bird perching to inspire Micro Aerial Vehicle design. Birds use a rapid pitch-up manoeuvre during perching, which modifies frontal area. Vorticity fields and forces are measured and simulated on an airfoil performing simultaneous deceleration and pitching to high angles of attack. Forces scale with the shape change number, a ratio between velocity of frontal area change and velocity change during deceleration. A simple analytical model agrees remarkably well with observed forces, and shows that the majority of forces are caused by boundary-layer separation and added-mass effects. Next, the kinematics of a small perching bird (the black-capped chickadee; Poecile atricapillus) are measured and parameterized with a three-dimensional analogue to the two-dimensional shape change number. The shape change numbers used by these birds are within the range of laboratory and computational tests discussed herein. These small birds use shape change numbers in proportion to the kinetic and potential energy at the start of the deceleration phase, in accordance with analytical predictions.
Organizational identity, power, and peacekeeping: An analysis of informal communication in Canada's military
Creators: name: Shapovalova, Olga M.
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Mass Communications
subject: Military Studies
subject: Sociology--Organizational
subject: organizational identity
subject: power
subject: Canada's military
subject: online forum
subject: Communication

description: I assume a critical-interpretivist stance to analyze the Canadian Armed Forces (CAF) as an organization, which enables me to go behind the scenes of its allegedly hierarchical and rigid power structures. While conducting a qualitative thematic analysis of one discussion on the Army.ca website, I uncover how soldiers resist organizational control in their informal communication. I argue that soldiers who post on the forum exert power by challenging and redefining the notions of peacekeeping and military identity in their comments. In their interactions, soldiers resist the publicly accepted image of the CAF as a peacekeeping force and reclaim their identity as warfighters. Grounding this research in organizational communication theory, I apply a communication lens to the CAF and show how the concepts of organizational culture, identity, image, power, and resistance are produced, contested, and reproduced through the process of communication, constantly interconnecting and mutually influencing each other.
ยุคใหม่ของการดูแลสุขภาพด้วยระบบนิเวศทางธุรกิจและเทเลเฮลธ์
Creators: name: ศิริรัตน์ วงศ์ประกรณ์กุล
Publisher: name: Mahidol University
Year: 2020
Subjects: อินเทอร์เน็ตในทุกสิ่ง
ระบบนิเวศทางธุรกิจ
เทเลเฮลธ์
โทรเวชกรรม
โควิด-19

description: Mahidol R2R e-Journal, 7, 2, 1-15
Promoter Analyses and Biochemical Studies of Lettuce (Lactuca sativa) cis-Prenyltransferases
Creators: name: Reavell-Roy, Elysabeth
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Biochemistry
subject: cis-prenyltransferase

description: Natural rubber is poly-cis-isoprene polymer with molecular weight of more than 1 million Da. Although it is an important raw material used for many industrial and medical products, the biosynthesis of natural rubber is not yet fully understood. Due to the poly-cis-isoprene structure of natural rubber, cis-prenyltransferases are proposed to be responsible for the elongation of this important polymer. Currently, all commercial rubber comes from the Brazilian Rubber Tree (Heava brasiliensis), which is not suited to laboratory study. The annual plant, lettuce (Lactuca sativa), can synthesize high quality NR, is self-pollinating, transformable, and has an available genome sequence. The Ro laboratory at University Calgary, has identified three cis-prenyl transferases (CPTs) and two CPT scaffolding proteins (CSFs) in lettuce. It appears that one pair of a CPT and CSF (LsCPT3 and LsCSF2) is responsible for the production of natural rubber in lettuce, while another pair (LsCPT1 and LsCSF1) is necessary in primary metabolism. The remaining CPT, LsCPT2, is most similar to prokaryotic CPTs and is hypothesized to function without a CSF partner. Currently, there is no specific promoter for natural rubber producing cells (laticifers), which hinders the study of CPT3 and CSF2 in natural rubber production. In this thesis project, promoters for LsCPT3 and LsCSF2 have been cloned and characterized. The GUS reporter gene system was used to demonstrate that both promoters have specific activity in laticifer cells. LsCPT2 was cloned and characterized, demonstrating that LsCPT2 can be expressed in the prokaryotic organism, E. coli. When purified from E. coli, LsCPT2 was found to have CPT activity in vitro, based on a 14C-IPP incorporation assay.
Anisotropic velocity statistics of topological defects under shear flow
Creators: name: Angheluta, Luiza
name: Jeraldo, Patricio
name: Goldenfeld, Nigel
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We report numerical results on the velocity statistics of topological defects during the dynamics of phase ordering and non-relaxational evolution assisted by an external shear ow. We propose a numerically efficient tracking method for finding the position and velocity of defects, and apply it to vortices in a uniform field and dislocations in anisotropic stripe patterns. During relaxational dynamics, the distribution function of the velocity fuctuations is characterized by a dynamical scaling with a scaling function that has a robust algebraic tail with an inverse cube power law. This is characteristic to defects of codimension two, e.g. point defects in two dimensions and filaments in three dimensions, regardless of whether the motion is isotropic (as for vortices) or highly anisotropic (as for dislocations). However, the anisotropic dislocation motion leads to anisotropic statistical properties when the interaction between defects and their motion is in infuenced by the presence of an external shear flow transverse to the stripe orientation.
Mitochondrial genomes, phylogenetic associations, and SNP recovery for the key invasive Ponto-Caspian amphipods in Europe
Creators: name: Mamos, Tomasz
Publisher: name: Zenodo
Year: 2021

description: Supplementary material: Table S1: Summary of used in the study Amphipoda mitogenomes or genomic/transcriptome resources with their respective GenBank accession codes.
 Tables S2: Summary of polymorphisms for the D. villosus Turkey and England isolates compared to the reference specimen from Poland. Dikerogammarus haemobaphes from Germany is compared to the reference from England (MK644228). Both comparisons are made with respect to base pair change, position, codon change, polymorphism type, protein effect, mapped reads coverage, variant frequency and approximate p-value.
 Table S3: Substitution rates obtained for all coding genes obtained from calibrated Bayesian reconstruction.
 Figure S1: Genetic maps of the invasive Ponto-Caspian amphipods: Dikerogammrus haemobaphes, D. bispinosus and Pontogammarus robustoides, Obesogammarus crassus and theire sister lineages Homoeogammarus veneris, Echinogammarus marinus and Echinogammarus berilloni. Explanation of graphics provided on Fig. 1. Scale for sequence coverage after logarithmic transformation.
 Figure S2: Maximum Likelihood phylogenies reconstructed based on (A) full set of genes and (B) proteins from all coding genes.
 Figure S3: Bayesian phylogenetic maximum clade credibility chronogram of the Gammaroidea mitogenomes from Fig. 3 provided with 95% highest posterior densities bars for all nodes.
Passerine Exposure to Metal Contaminants from Oilsands Mining in the Athabasca Region of Northeastern Alberta, Canada
Creators: name: Godwin, Christine
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Toxicology
subject: Tree Swallow Nestlings
subject: Metal Pollution
subject: Oilsands Mining
subject: Chipping Sparrow
subject: Tennessee Warbler
subject: Ecotoxicology

description: I characterized passerine exposure to metals from waste-materials associated with oilsands mining. I measured metal concentrations in whole blood of tree swallows (Tachycineta bicolor), Tennessee warblers (Oreothlypis peregrina), and chipping sparrows (Spizella passerina). Additionally, I measured metal concentrations in kidney, liver, and stomach contents of nestling tree swallows, and monitored tree swallow nest success and nestling growth. I identified insects fed to nestlings to understand the influence of diet on metal accumulation in tissues, and collected insects to assess metal levels in available prey. I found high variability in metal concentrations in blood correlated with small blood sample volume, and suggest that blood may not be suitable for monitoring metal contamination in small birds. I found no evidence that metals were elevated in tissues of passerines near oilsands operations. Nest success and nestling growth were influenced by local environmental conditions and not affected by proximity to mining operations.
Systematic study of the effect of individual rotational energy levels on the fusion cross-section of \texorpdfstring{$^{16}O$}--based reactions of range $480 \le {Z_PZ_T} \le 592$
Creators: name: Jain, Nishu
name: Bhuyan, M.
name: Kumar, Raj
Publisher: name: arXiv
Year: 2023
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The present work aims to investigate the effect of individual rotational energy levels on the fusion cross-sections for $^{16}$O-based reaction systems, namely, $^{16}$O + $^{182,184,186}$W, $^{16}$O + $^{176,180}${Hf}, $^{16}$O + $^{174,176}${Yb}, $^{16}$O + $^{166}${Er}, $^{16}$O + $^{148,152,154}$Sm, $^{16}$O + $^{150}$Nd at energies below the fusion barrier. Using the CCFULL code, the effect of low-lying rotational energy levels on the fusion cross-section for $^{16}$O induced reactions has been investigated at energies below and around the Coulomb barrier. The calculations are performed by assuming the fixed value of diffuseness parameter $a_{0}=0.65$ fm in the Woods-Saxon nuclear potential and the other two parameters are optimised by fitting the experimental data at the above barrier. Here we have determined the $V_0$ and $r_0$ as a function of $Z_PZ_T$, where experimental cross-sections are available. From our calculations, it is observed that the hexadecapole deformation ($β_4$) with different magnitudes has a significant influence on the fusion cross sections. For the case of the $+ve$ value of $β_4$, beyond $10^+$, the rotational levels cease to contribute significantly and also there is a significant difference between the contribution of sequential channels. On the other hand, in the case of -ve $β_4$, up to $6^+$ levels contribute significantly. Furthermore, we have established an algebraic systematic of fitting, which one can use to determine the parameters $V_0$, $r_0$ of Woods-Saxon nuclear potential within the range of $Z_PZ_T$ lie in between $480 \le {Z_PZ_T} \le 592$.
Higgs boson decays to $B_c$ meson in the fragmentation-function approach
Creators: name: Zheng, Xu-Chang
name: Wu, Xing-Gang
name: Zhan, Xi-Jie
name: Wang, Guang-Yu
name: Li, Hong-Tai
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the paper, we present a calculation of the decay widths for the Higgs boson decays to the $B_c$, $B_c^*$, $B_c(2^1S_0)$ and $B_c^*(2^3S_1)$ mesons using the fragmentation-function approach. In the calculation, the fragmentation functions up to order $α_s^3$ based on the nonrelativistic QCD factorization theory are used, and the decay widths for $H\to Q+X$ and $H \to g+X$ at the partonic level are calculated up to order $α_s$. The large logarithms of $m_H^2/m_{Bc}^2$ are resummed up to next-to-leading logarithmic accuracy by solving the evolution equations for the running quark masses and the fragmentation functions. Compared to the leading-order decay widths based on the nonrelativistic QCD approach, the decay widths based on the fragmentation-function approach that include the higher-order QCD corrections are reduced significantly. Our numerical results show that there are about $1.2\times 10^5$ $B_c$ events via the Higgs decays to be produced at the HL-LHC with $3ab^{-1}$, and about $1.6\times 10^6$ $B_c$ events via the Higgs decays to be produced at the HE-LHC with $15ab^{-1}$.
description: 12 pages, 9 figures
Broadband and Energy-Efficient Power Amplifier Architectures
Creators: name: Akbarpour, Mohammadhassan
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Engineering--Electronics and Electrical
subject: Power Amplifier
subject: Broadband
subject: High-Efficiency
subject: PAPR
subject: Doherty

description: In this dissertation, power amplifier circuits and architectures are proposed that provide high efficiency for spectral-efficient high peak-to-average power ratio signals that are being used in modern communications systems. Using the proposed amplifier architectures and circuits high efficiency can be achieved in large frequency bandwidth. The TLLM (Transformer-Less Load-Modulated) amplifier proposed in this dissertation is an amplifier that has similar efficiency performance to the Doherty amplifier, while it does not utilize any power combiner at the output. In the proposed TLLM amplifier, the two amplifier branches are connected directly together and provide high efficiency for high PAPR (Peak-to-Average Power Ratio) signals. A complete analysis is given for designing the two amplifier branches in the TLLM amplifier and a complete and comprehensive design procedure is provided for designing broadband TLLM amplifiers. Three different amplifier prototypes are also implemented using the TLLM architecture showing its performance and capability. The second architecture proposed in this dissertation is a Doherty amplifier that utilizes three-port input and output networks. The analysis and flexible design procedure for designing a Doherty amplifier with three-port input/output networks is provided. The proposed analysis and design procedure can be used to design a Doherty amplifier with any output power ratio from the branches, and power division between the branch inputs. The proposed amplifier eliminates the need for any impedance inverter and offset lines at the input or output of the amplifier. In the next part, a new biasing technique is proposed for transistors. It is shown that using this new biasing, transistors exhibit completely different behaviors from the conventionally biased transistors that can be used for different purposes. Two of the applications are studied in this dissertation. First, a multi-branch amplifier is presented which can provide Doherty-like efficiency in a very large bandwidth. The second application is a linearizing driver amplifier. It is shown that using the proposed biasing scheme, a controlled amount of gain expansion can be achieved. The gain expansion can be used to compensate for the gain compression of the conventional power amplifiers to improve the amplifier's linearity without the need for additional linearizing circuitry or digital pre-distortion.
Experimental Research in Synthetic Molecular Communications -- Part I: Overview and Short-Range Systems
Creators: name: Lotter, Sebastian
name: Brand, Lukas
name: Jamali, Vahid
name: Schäfer, Maximilian
name: Loos, Helene M.
name: Unterweger, Harald
name: Greiner, Sandra
name: Kirchner, Jens
name: Alexiou, Christoph
name: Drummer, Dietmar
name: Fischer, Georg
name: Buettner, Andrea
name: Schober, Robert
Publisher: name: arXiv
Year: 2023
Subjects: subject: Emerging Technologies (cs.ET)
subject: FOS: Computer and information sciences

description: Since its emergence from the communication engineering community around one and a half decades ago, the field of Synthetic Molecular Communication (SMC) has experienced continued growth, both in the number of technical contributions from a vibrant community and in terms of research funding. Throughout this process, the vision of SMC as a novel, revolutionary communication paradigm has constantly evolved, driven by feedback from theoretical and experimental studies, respectively. It is believed that especially the latter ones will be crucial for the transition of SMC towards a higher technology readiness level in the near future. In this spirit, we present here a comprehensive survey of experimental research in SMC. In particular, this survey focuses on highlighting the major drivers behind different lines of experimental research in terms of the respective envisioned applications. This approach allows us to categorize existing works and identify current research gaps that still hinder the development of practical SMC-based applications. Our survey consists of two parts; this paper and a companion paper. While the companion paper focuses on SMC with relatively long communication ranges, this paper covers SMC over short distances of typically not more than a few millimeters.
description: 10 pages, 1 table, 5 figures. Accepted for publication in the IEEE Nanotechnology Magazine
Nuclear medium effects on the $\bar K^*$ meson
Creators: name: Tolos, L.
name: Molina, R.
name: Oset, E.
name: Ramos, A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The $\bar K^*$ meson in dense matter is analyzed by means of a unitary approach in coupled channels based on the local hidden gauge formalism. The $\bar K^*$ self-energy and the corresponding $\bar K^*$ spectral function in the nuclear medium are obtained. We observe that the $\bar K^*$ develops a width in matter up to five times bigger than in free space. We also estimate the transparency ratio of the $γA \to K^+ K^{*-} A^\prime$ reaction. This ratio is an excellent tool to detect experimentally modifications of the $\bar K^*$ meson in dense matter.
description: 11 pages, 5 figures, contribution based on the invited talk at ECT* Workshop "Strange Hadronic Matter", September 26-30, 2011
D1.1 Pilots Planning documentation
Creators: name: Alonso-Vicario, Ainhoa
name: Borges, Cruz E.
name: Nohales, Gemma
name: Oribe-Garcia, Iraia
name: Vila, Marta
Publisher: name: Zenodo
Year: 2017
Subjects: Legislation
Targets Groups
User Requirements
Co-creation

description: This deliverable will define all the cross-cutting aspects of the Project that should be taken into consideration for the subsequent developments. This deliverable will include a comprehensive legislation framework analysis in each pilot site, the definition of the scope of the project identifying the user groups and all involved stakeholders, specifying the use cases and the functional and non-functional requirements of all the eco-solution as well as the definition of the technical specification of the envisaged technical solutions. Figure 1 depicts the content of this deliverable.  Each section will have a brief description of the objective, the methodology used and the main results. When necessary an appendix will be used to include all the supplementary or confidential information.
On the Design of a Novel Joint Network-Channel Coding Scheme for the Multiple Access Relay Channel
Creators: name: Hernaez, Mikel
name: Crespo, Pedro M.
name: Del Ser, Javier
Publisher: name: arXiv
Year: 2012
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: This paper proposes a novel joint non-binary network-channel code for the Time-Division Decode-and-Forward Multiple Access Relay Channel (TD-DF-MARC), where the relay linearly combines -- over a non-binary finite field -- the coded sequences from the source nodes. A method based on an EXIT chart analysis is derived for selecting the best coefficients of the linear combination. Moreover, it is shown that for different setups of the system, different coefficients should be chosen in order to improve the performance. This conclusion contrasts with previous works where a random selection was considered. Monte Carlo simulations show that the proposed scheme outperforms, in terms of its gap to the outage probabilities, the previously published joint network-channel coding approaches. Besides, this gain is achieved by using very short-length codewords, which makes the scheme particularly attractive for low-latency applications.
description: 28 pages, 9 figures; Submitted to IEEE Journal on Selected Areas in Communications - Special Issue on Theories and Methods for Advanced Wireless Relays, 2012
Experimental Research in Synthetic Molecular Communications -- Part II: Long-Range Communication
Creators: name: Lotter, Sebastian
name: Brand, Lukas
name: Jamali, Vahid
name: Schäfer, Maximilian
name: Loos, Helene M.
name: Unterweger, Harald
name: Greiner, Sandra
name: Kirchner, Jens
name: Alexiou, Christoph
name: Drummer, Dietmar
name: Fischer, Georg
name: Buettner, Andrea
name: Schober, Robert
Publisher: name: arXiv
Year: 2023
Subjects: subject: Emerging Technologies (cs.ET)
subject: FOS: Computer and information sciences

description: In this second part of our survey on experimental research in Synthetic Molecular Communication (SMC), we review works on long-range SMC systems, i.e., systems with communication ranges of more than a few millimeters. Despite the importance of experimental research for the evolution of SMC towards a mature communication paradigm that will eventually support revolutionary applications beyond the reach of today's prevalent communication paradigms, the existing body of literature is still comparatively sparse. Long-range SMC systems have been proposed in the literature for information transmission in two types of fluid media, liquid and air. While both types of SMC systems, liquid-based and air-based systems, rely on encoding and transmitting information using molecules, they differ substantially in terms of the physical system designs and in the type of applications they are intended for. In this paper, we present a systematic characterization of experimental works on long-range SMC that reveals the major drivers of these works in terms of the respective target applications. Furthermore, the physical designs for long-range SMC proposed in the literature are comprehensively reviewed. In this way, our survey will contribute to making experimental research in this field more accessible and identifying novel directions for future research.
description: 10 pages, 2 tables, 4 figures. Accepted for publication in the IEEE Nanotechnology Magazine
Continuous-Mode Power Amplifiers for Broadband Power-Efficient Wireless Applications
Creators: name: Rezaei Nazifi, Saeed
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Engineering--Electronics and Electrical
subject: Power Amplifier
subject: Broadband
subject: Continuous-mode
subject: Load-pull
subject: High-Efficiency

description: Radio Frequency power amplifiers (PAs) are key elements in transmitters of wireless radios. Their main task is to amplify the signal and generate the required output power that allows transmission and radiation of the signal over the appropriate range. PA requirements mainly consist of the absolute achievable output power in conjunction with the highest possible efficiency and signal quality performances. Large bandwidths are also important requirements for PAs in contemporary and future communication systems. In this dissertation, a continuous-mode PA concept for achieving the best possible power and efficiency across wide bandwidths is investigated and a thorough study is carried out to assess the impact of practical device voltage limitations on the PA performance. A comprehensive analysis of the extended continuous class-B (class-J) mode is carried out and led to the development of a graphical tool, called "linearity contour", whose role is in identifying the PA load impedance design spaces. Taking advantage of the class-J PA and considering the impact of the output matching network's inductor loss, a methodology is proposed for the design of an integrated GaN class-J PA. To improve further the PA bandwidth, an on-wafer loadpull setup is arranged to measure the required load impedances. Measurement results of the PA show a 25\% bandwidth improvement in comparison with the conventional design approach. In addition, a design methodology to present the required class-J impedances is proposed and verified by designing a class-J PA with a die transistor. The study of the continuous-mode PAs is extended to the class-C mode by proposing a low- and a high-power continuous class-C mode and demonstrating experimentally their RF performances for a set of load impedances across certain design spaces. Examples of GaN MMIC PAs working in continuous class-C modes are provided to validate the proposed concept. Finally, to improve the linearity of PAs that present dual inflection points in their AM/AM characteristics, such as GaAs and GaN based amplifiers, an analog predistortion linearizer is proposed. By adjusting three Schottky and PIN diodes bias voltages in the implemented predistorter, the reverse AM/AM characteristic of a PA is synthesized and used to linearize the PA.
Computing points on bielliptic modular curves over fixed quadratic fields
Creators: name: Michaud-Jacobs, Philippe
Publisher: name: arXiv
Year: 2023
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11G18, 11G05, 14G05

description: We present a Mordell-Weil sieve that can be used to compute points on certain bielliptic modular curves $X_0(N)$ over fixed quadratic fields. We study $X_0(N)(\mathbb{Q}(\sqrt{d}))$ for $N \in \{ 53,61,65,79,83,89,101,131 \}$ and $\lvert d \rvert < 100$.
description: 8 pages
Quantifying Temporal Changes in Knee Joint Laxity and Dynamic Knee Stability for Healthy and Acute ACL Injured Individuals
Creators: name: Bishop, Emily Lynn
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Engineering--Biomedical
subject: Knee
subject: ACL
subject: Osteoarthritis
subject: Stability
subject: FHA
subject: Laxity

description: ACL rupture causes altered joint dynamics and leads to greater risk of joint degeneration and development of knee OA. The current study investigated relations amongst passive knee laxity and dynamic knee stability in healthy and ACLD individuals over time to understand adaptations following ACL rupture during a sub-acute stage post-injury. An in vivo MR based measure of passive knee laxity was obtained using a novel knee loading apparatus to image the knee joint under various loading conditions. Dynamic knee stability was evaluated during two dynamic tasks using the finite helical axis (FHA) approach to quantify kinematics, combined with wavelet analysis of muscle activity. The healthy group demonstrated side-to-side differences in FHA measures not present in the ACLD group. This revealed asymmetrical movement in the healthy group and enabled appropriate interpretation of side-to-side differences due to ACL rupture. Passive knee laxity was larger in the ACLD injured limb compared to the healthy dominant limb at six weeks post-injury, and did not significantly change in the injured limb between six and twelve weeks post-injury. FHA measures in the ACLD injured limb were not significantly different from healthy at six weeks post-injury. However, the ACLD group demonstrated changes in both limbs in FHA measures and muscle power between six and twelve weeks post-injury suggesting bilateral adaptations to ACL rupture. These changes resulted in increased limb symmetry during the swing task, and decreased limb symmetry during the squat task. At twelve weeks post-injury, ACLD individuals revealed significant correlations between passive knee laxity and FHA measures not present in the contralateral limb or the healthy group. ACLD individuals with increased passive knee laxity demonstrated more constrained movement during the swing, and less constrained movement during the squat. Relationships amongst passive knee laxity and dynamic knee stability in the ACLD group provided an understanding of the influence of structural joint laxity on dynamic movement patterns. Early adaptations in the ACLD knee joint are speculated to contribute to the initiation of degenerative changes in the knee joint, which may be modifiable with targeted rehabilitation protocols aimed at minimizing or slowing the progression of OA.
Characterizing Turbulence Modification via Red-Blood-Cell Analogs in Free Shear Layers using Particle Tracking Velocimetry
Creators: name: Kaucky, Lucie
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Engineering--Biomedical
subject: Blood flow
subject: Fluid dynamics
subject: Particle-laden flow
subject: Two-Phase Flow

description: The turbulence modification of red blood cells is evaluated using a basic experimental approximation to blood, which specifically accounts for its particle-laden and dense concentration in vivo. The contribution of super absorbent polymer beads to a developing free shear layer is quantified using particle tracking velocimetry. Results showed that the presence of a particle-phase reduced mean velocities, kinetic energy, and the gradient of kinetic energy, implying that the free shear layer was diffused. Furthermore, similar fluid behaviour resulted between the suspension cases when Reynolds number was increased from 1,143 to 10,490. This suggests that red blood cells act to diffuse flow features that can subsequently lead to instabilities from which transitional and eventually turbulent behaviour can develop. These findings indicate that a two-phase model, specifically accounting for the dense particle-phase of blood, may be necessary for arterial blood flow where transition and turbulence can occur.
Eigenfunction expansions for a fundamental solution of Laplace's equation on $\R^3$ in parabolic and elliptic cylinder coordinates
Creators: name: Cohl, Howard S.
name: Volkmer, Hans
Publisher: name: arXiv
Year: 2012
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35A08, 35J05, 42C15, 33E10, 33C15

description: A fundamental solution of Laplace's equation in three dimensions is expanded in harmonic functions that are separated in parabolic or elliptic cylinder coordinates. There are two expansions in each case which reduce to expansions of the Bessel functions $J_0(kr)$ or $K_0(kr)$, $r^2=(x-x_0)^2+(y-y_0)^2$, in parabolic and elliptic cylinder harmonics. Advantage is taken of the fact that $K_0(kr)$ is a fundamental solution and $J_0(kr)$ is the Riemann function of partial differential equations on the Euclidean plane.
Panicum (sect. Antidotalia) Freckmann & Lelong 2002
Creators: name: Fernando O. Zuloaga
name: Diego Giraldo-Cañas
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Poales
Poaceae
Panicum

description: 1.  Panicum sect. Antidotalia  Freckmann & Lelong, Sida 20 (1): 163. 2002.
 Especie tipo. Panicum antidotale Retz.
 Composición y distribución. Esta sección es monotípica y en el continente americano se encuentra desde Estados Unidos de América hasta Argentina.
description: Published as part of Fernando O. Zuloaga & Diego Giraldo-Cañas, 2013, 30. Panicum, pp. 1-107 in Flora de Colombia 30 on page 13, DOI: 10.5281/zenodo.259616
Parameter Estimation for Wireless Fading and Turbulence Channels
Creators: name: Wang, Ning
Publisher: name: University of British Columbia
Year: 2010

description: In this thesis, we mainly investigate the parameter estimation problem for fading and atmospheric turbulence channel models for wireless communications. A generalized method of moments (GMM) estimation scheme is introduced to the estimation of Nakagami fading parameter. Our simulation results and asymptotic performance analysis reveal that this GMM framework achieves the best performance among all method of moments estimators based on the same moment conditions. Further improved performance can be achieved using additional moment conditions in the GMM. In the study of the maximum-likelihood (ML) based Nakagami m parameter estimators, we observe that a parameter \Delta, which is defined as the logarithmic ratio of the arithmetic mean to the geometric mean of the Nakagami-m fading power, can be used to assess the estimation performance of ML-based estimators analytically. For small sample size, the probability density function (PDF) of is derived by the moment generating function (MGF) method. For large sample size scenarios, we use a moment matching method to approximate the PDF of \Delta by a two-parameter Gamma PDF. This approximation is validated by the Kolmogorov-Smirnov (K-S) test as well as simulation results. When studying the Gamma-Gamma turbulence model for free-space optical (FSO) communication, an estimation scheme for the shape parameters of the Gamma-Gamma distribution is introduced based on the concept of fractional moments and convex optimization. A modified estimation scheme, which exploits the relationship between the Gamma-Gamma shape parameters in FSO communication, is also proposed. Simulation results show that this modified scheme can achieve satisfactory estimation performance over a wide range of turbulence conditions.
Infrared Spectroscopy of C6D6 - Rgn(n=1, 2)
Creators: name: GEORGE, JOBIN
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Physics
subject: Physics--Molecular
subject: van der Waals
subject: Benzene
subject: Rare gas
subject: Infrared spectroscopy

description: The infrared spectra of C6D6-Rg1,2 complexes were observed, with the rare gas (Rg) being He, Ne, Ar. The spectra were observed at a resolution of ~ 60 MHz using a tunable optical parametric oscillator (OPO) to probe a pulsed supersonic-jet expansion from a slit nozzle. The detection system also used a balanced subtraction technique to suppress the power fluctuations inherent to the OPO. Due to a strong Fermi resonance in the C6D6 monomer, two bands were observed for each of the complexes, one around the vibrational fundamental of ν12 (~2289 cm-1) and other around the combination band ν2 + ν13 (~2275 cm-1) of the benzene monomer. In the case of C6D6-Rg dimers, spectra were assigned to a symmetric top with C6v symmetry with the rare gas atom being located on the C6 symmetry axis. To observe the C6D6-Rg2 trimers, the nozzle had to be cooled, resulting in spectra with a lower rotational temperature. The spectra of the C6D6-Rg2 trimers were in agreement with a D6h symmetry structure, where the rare gas atoms are positioned on the C6 symmetry axis, above and below the C6D6 plane.
Dual-sPLS: a family of Dual Sparse Partial Least Squares regressions for feature selection and prediction with tunable sparsity; evaluation on simulated and near-infrared (NIR) data
Creators: name: Alsouki, Louna
name: Duval, Laurent
name: Marteau, Clément
name: Haddad, Rami El
name: Wahl, François
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: G.3; J.6
subject: 62J07, 62G08, 62J05

description: Relating a set of variables X to a response y is crucial in chemometrics. A quantitative prediction objective can be enriched by qualitative data interpretation, for instance by locating the most influential features. When high-dimensional problems arise, dimension reduction techniques can be used. Most notable are projections (e.g. Partial Least Squares or PLS ) or variable selections (e.g. lasso). Sparse partial least squares combine both strategies, by blending variable selection into PLS. The variant presented in this paper, Dual-sPLS, generalizes the classical PLS1 algorithm. It provides balance between accurate prediction and efficient interpretation. It is based on penalizations inspired by classical regression methods (lasso, group lasso, least squares, ridge) and uses the dual norm notion. The resulting sparsity is enforced by an intuitive shrinking ratio parameter. Dual-sPLS favorably compares to similar regression methods, on simulated and real chemical data. Code is provided as an open-source package in R: \url{https://CRAN.R-project.org/package=dual.spls}.
MPEC 2023-W144 : 2017 UA5
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Optimal Transmit Power and Channel-Information Bit Allocation With Zeroforcing Beamforming in MIMO-NOMA and MIMO-OMA Downlinks
Creators: name: Mamat, Kritsada
name: Santipach, Wiroonsak
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In downlink, a base station (BS) with multiple transmit antennas applies zeroforcing beamforming to transmit to single-antenna mobile users in a cell. We propose the schemes that optimize transmit power and the number of bits for channel direction information (CDI) for all users to achieve the max-min signal-to-interference plus noise ratio (SINR) fairness. The optimal allocation can be obtained by a geometric program for both non-orthogonal multiple access (NOMA) and orthogonal multiple access (OMA). For NOMA, 2 users with highly correlated channels are paired and share the same transmit beamforming. In some small total-CDI rate regimes, we show that NOMA can outperform OMA by as much as 3 dB. The performance gain over OMA increases when the correlation-coefficient threshold for user pairing is set higher. To reduce computational complexity, we propose to allocate transmit power and CDI rate to groups of multiple users instead of individual users. The user grouping scheme is based on K-means over the user SINR. We also propose a progressive filling scheme that performs close to the optimum, but can reduce the computation time by almost 3 orders of magnitude in some numerical examples.