cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Stilobezzia (Stilobezzia)
Creators: name: William L. Grogan, Jr.
name: Spinelli
name: Ronderos, María M.
name: Carla
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Ceratopogonidae
Stilobezzia

description: Stilobezzia (Stilobezzia) sp.
 Discussion. We examined a single small, yellowish brown female specimen in the subgenus Stilobezzia. The head and flagellomeres are brown and the eyes are narrowly separated. The thorax is bright yellowish brown, the scutellum has two mesal and two lateral stout setae, and the legs are brown. The wing membrane is hyaline and the first radial cell is small. The abdomen is pale yellowish and has one well developed, sclerotized spermatheca with hyaline punctuations and two other rudimentary spermathecae. Because males in the genus Stilobezzia usually exhibit important, species specific characters in their genitalia, we are reluctant to name this species.
 Specimen examined. Guadeloupe, Basse Terre, Bois Malher, 9-IX-2011, MC Thomas & RH Turnbow, Blacklight trap, 1 female.
description: Published as part of William L. Grogan, Jr., Spinelli, Ronderos, María M. & Carla, 2013, The biting and predaceous midges of Guadeloupe Diptera: Ceratopogonidae). I. Species of the subfamily Ceratopogoninae, pp. 1-21 in Insecta Mundi 2013 (324) on page 11, DOI: 10.5281/zenodo.5178313
Primordial fluctuations in bulk inflaton model
Creators: name: Koyama, Kazuya
name: Takahashi, Keitaro
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: An inflationary brane model driven by a bulk inflaton with exponential potential is proposed. We find a family of exact solutions that describe power-law inflation on the brane. These solutions enable us to derive exact solutions for metric perturbations analytically. By calculating scalar and tensor perturbations, we obtain a spectrum of primordial fluctuations at the end of the inflation. The amplitudes of scalar and tensor perturbations are enhanced in the same way if the energy scale of the inflation is sufficiently higher than the tension of the brane. Then the relative amplitude of scalar and tensor perturbations is not suppressed even for high-energy inflation. This is a distinguishable feature from the inflation model driven by inflaton on the brane where tensor perturbations are suppressed for high-energy inflation. We also point out that massive Kaluza-Klein modes are not negligible at high-frequencies on 3-space of our brane.
description: 16 pages, 3 figures, reference added
Microparticle transport networks with holographic optical tweezers and cavitation bubbles
Creators: name: Quinto-Su, Pedro A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Optical transport networks for active absorbing microparticles are made with holographic optical tweezers. The particles are powered by the optical potentials that make the network and transport themselves via random vapor propelled hops to different traps without the requirement for external forces or microfabricated barriers. The geometries explored for the optical traps are square lattices, circular arrays and random arrays. The degree distribution for the connections or possible paths between the traps are localized like in the case of random networks. The commute times to travel across $n$ different traps scale as $n^2$, in agreement with random walks on connected networks. Once a particle travels the network, others are attracted as a result of the vapor explosions.
Structure constants of heavy operators in ABJM/ABJ Theory
Creators: name: Chen, Gaoli
name: Koch, Robert de Mello
name: Kim, Minkyoo
name: Van Zyl, Hendrik J. R.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Efficient and powerful approaches to the computation of correlation functions involving determinant, sub-determinant and permanent operators, as well as traces, have recently been developed in the setting of ${\cal N}=4$ super Yang-Mills theory. In this article we show that they can be extended to ABJM and ABJ theory. After making use of a novel identity which follows from character orthogonality, an integral representation of certain projection operators used to define Schur polynomials is given. This integral representation provides an effective description of the correlation functions of interest. The resulting effective descriptions have ${1\over N}$ as the loop counting parameter, strongly suggesting their relevance for holography.
description: 1+22 pages, 3 Figures
AN APPROACH TO MAKE A COST-EFFICIENT, LIGHTWEIGHT & ECO-FRIENDLY HEAT & ENERGY RECOVERY VENTILATOR (HERV).pdf
Creators: name: Antor, Saifuzzaman
name: Md Kazim Reza Chowdhury
name: Razi, Alim Al
Publisher: name: figshare
Year: 2019
Subjects: subject: 91505 Heat and Mass Transfer Operations
subject: FOS: Other engineering and technologies

description: Nowadays, throughout the whole world household air-conditioning is a matter of importance. As the air-conditioning system being costly, a number of people cannot afford it easily. In this paper, it is tried to find out if it is possible to make an air-conditioning system in a short budget. An existing design of a heat recovery ventilator has been taken and modified with new ideas. The designed heat exchanger, which is also an HVAC system gives up outgoing warm airs’ heat to incoming cold air in winter. During summer cool air blows through the heat exchanger stealing heat from incoming hot air and makes it cool. The main difference between an existing HERV and this one is the structural design. No gasket has been used. On the basis of cost and thermal conductivity, the material of the heat transferring plates is chosen whereas the material of the outside frames was selected according to its’ cost, being lightweight and ease of manufacturing. Geometrical data of plate and channel have been assumed. The number of required heat-conducting plates is determined with the help of spreadsheet program and the general physical model is made then. Experimentally the device is capable of changing around 6°C temperature with less power consumption by a manufacturing cost of USD 34.00 only.
Sinergismo de variáveis climáticas e incêndios florestais no Estado do Acre
Creators: name: Sonaira S. Silva
name: LIANA ANDERSON
name: Fearnside, Philip M.
name: Liesenfeld, Marcus Vinicius Athaydes
name: Oliveira, Igor
name: Thiago Morello
name: Clemente, Francisco Salatiel
name: Marllus Rafael Almeida
name: Adriele Karlokoski
name: Silva, Tiago Lucena Da
name: Luiz Aragão
name: Brown, Foster
name: Costa, Jessica
name: Melo, Antonio William
name: Paulo Maurício Graça,
name: Brando, Paulo
name: Alencar, Ane
Publisher: name: figshare
Year: 2019
Subjects: subject: 60299 Ecology not elsewhere classified
subject: FOS: Biological sciences

description: Este estudo visou compreender a influência das variáveis climáticas de precipitação e temperatura na ocorrência de incêndios florestais no Estado do Acre, Brasil.
(PDF) Sinergismo de variáveis climáticas e incêndios florestais no Estado do Acre. Available from: https://www.researchgate.net/publication/337559965_Sinergismo_de_variaveis_climaticas_e_incendios_florestais_no_Estado_do_Acre [accessed Dec 16 2019].
Aspects of isentropic trajectories in chiral effective models
Creators: name: Stiele, Rainer
name: Alberico, Wanda Maria
name: Beraudo, Andrea
name: Pereira, Renan Câmara
name: Costa, Pedro
name: Hansen, Hubert
name: Motta, Mario
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The evolution of the fireball in heavy ion collisions is an isentropic process, meaning that it follows a trajectory of constant entropy per baryon in the phase diagram of the strong interaction. Responsible for the collective acceleration of the fireball is the speed of sound of the system, while fluctuations of conserved charges are encoded in quark-number susceptibilities: together, they leave their imprint in final observables. Here, this isentropic evolution will be analysed within chiral effective models that account for both chiral and center symmetry breaking, two central aspects of QCD. Our discussion focusses on the impact on the isentropic trajectories of the treatment of high-momentum modes, of the meson contribution to thermodynamics and of the number of quark flavours.
description: 6 pages, 5 figures, contribution to the proceedings of the FAIR next generation scientists - 6th Edition Workshop
Trichomycterus plumbeus Wosiacki & Garavello 2004
Creators: name: De Oliveira, Rianne C.
name: Ota, Renata R.
name: Deprá, Gabriel C.
name: Zawadzki, Cláudio H.
name: Pavanelli, Carla S.
name: Da Graça, Weferson J.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Siluriformes
Trichomycteridae
Trichomycterus
Trichomycterus plumbeus

description: Trichomycterus plumbeus Wosiacki & Garavello, 2004: 14, fig. 8.
Paratypes: 1 lot, 3 specimens —NUP 1614, 3, 1614, 72.5–78.5 mm SL: Brazil, Paraná, Foz do Jordão, Jordão reservoir, rio Jordão near at its mouth, tributary of rio Iguaçu, rio Paraná Basin, 25°45’S, 52°10’W, Nupélia & Copel staffs, Aug 1995.
Remarks: Valid as Cambeva plumbea (Wosiacki & Garavello 2004) (see Katz et al., 2018).
description: Published as part of De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S. & Da Graça, Weferson J., 2022, Catalog of type specimens of the fish collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade Estadual de Maringá Paraná, Brazil, pp. 1-43 in Zootaxa 5128 (1) on page 31, DOI: 10.11646/zootaxa.5128.1.1, http://zenodo.org/record/6479497
Einfluss von Mutationen im NOD2 Gen auf den Krankheitsphänotyp und den klinischen Verlauf bei Patienten mit Morbus Crohn
Creators: name: Gittel, Nicole
Publisher: name: Universität Rostock
Year: 2020
Subjects: subject: 610 Medical sciences Medicine

description: In dieser retrospektiven Genotyp-Phänotyp-Assoziationsstudie wurden 161 Patienten mit Morbus Crohn eingeschlossen und über einen Zeitraum von 2 Jahren auf verschiedene klinische Merkmale hin untersucht. Sämtliche Patienten wurden dazu entsprechend genotypisiert und hinsichtlich der drei Hauptmutationen SNP8, SNP12 und SNP13 hin überprüft. Es sollte nun speziell erfasst werden, ob Patienten mit Mutationen im NOD2-Gen mit einem besonderen klinischen Phänotyp vergesellschaftet sind und so auch einen schwereren Krankheitsverlauf aufweisen. NOD2 als ein möglicher Biomarker und Vorhersageparameter?
H_2 absorption in a dense interstellar filament in the Milky Way halo
Creators: name: Richter, P.
name: Sembach, K. R.
name: Howk, J. C.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate interstellar absorption from molecular hydrogen (H_2) and metals in an intermediate-velocity cloud (IVC) in the direction of the LMC star Sk -68 80 (HD 36521), based on data from the Far Ultraviolet Spectroscopic Explorer (FUSE) satellite. H_2 absorption from the Lyman- and Werner bands is detected in 30 lines at radial velocities v=+50 km/s in this IVC that is presumably located in the Milky Way halo. We obtain a total logarithmic H_2 column density of log N(H_2)=16.6 (0.5) along with a very low Doppler parameter of b=1.5 km/s. The presence of molecular material in this cloud is suprising, given the fact that the OI column density (log N(OI)=14.8 (0.1)) implies a very low neutral gas column density of ~10^{18} cm^-2 (assuming a solar oxygen abundance). If the H_2 column density represents its abundance in a formation-dissociation equilibrium, the data imply that the molecular gas resides in a small, dense filament at a volume density of ~800 cm^-3 and a thickness of only 41 Astronomical Units (AU). The molecular filament possibly corresponds to the tiny-scale atomic structures (TSAS) in the diffuse interstellar medium observed in high-resolution optical data, HI 21cm absorption, and in CO emission.
description: 12 pages, 6 figures; accepted for publication in A&A
A Survey on the Cardiology Ontology and Its Analytical Procedures.pdf
Creators: name: Mayapur, Priyanka
Publisher: name: figshare
Year: 2019
Subjects: subject: 90303 Biomedical Instrumentation
subject: FOS: Medical engineering
subject: 90699 Electrical and Electronic Engineering not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: 99902 Engineering Instrumentation
subject: FOS: Other engineering and technologies
subject: 90304 Medical Devices

description: Heart is an organ whose electrical activity is responsible in generating a trace that contains important information about the heart. This general article focuses on the various details and basics related of the heart and the techniques used to analyse an ECG.
Vacuum Polarization of a Charged Massless Scalar Field on Cosmic String Spacetime in the Presence of a Magnetic Field
Creators: name: Spinelly, J.
name: de Mello, E. R. Bezerra
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we consider a charged massless scalar quantum field operator in the spacetime of an idealized cosmic string, i.e., an infinitely long, straight and static cosmic string, which presents a magnetic field confined in a cylindrical tube of finite radius. Three distinct situations are taking into account in this analysis: {\it{i)}} a homogeneous field inside the tube, {\it{ii)}} a magnetic field proportional to $1/r$ and {\it{iii)}} a cylindrical shell with $δ$-function. In these three cases the axis of the infinitely long tube of radius $R$ coincides with the cosmic string. In order to study the vacuum polarization effects outside the tube, we explicitly calculate the Euclidean Green function associated with this system for the three above situations, considering points in the region outside the tube.
description: 26 pages, LaTex format, 3 figures
Collisional depolarization and transfer rates of spectral lines by atomic hydrogen. II: application to d states of neutral atoms
Creators: name: Derouich, M.
name: Sahal-Brechot, S.
name: Barklem, P. S.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The theory of collisional depolarization of spectral lines by atomic hydrogen (Derouich et al. \cite{derouich1}) is extended to $d$ $(l$=2) atomic levels. Depolarization rates, polarization and population transfer rates are calculated and results are given as a function of the temperature. Cross sections as a function of the effective quantum number for a relative velocity of 10 $\textrm{km s}^{-1}$ are also given together with velocity exponents $λ$, if \textbf{they exist}, on the assumption that the cross section varies with velocity as $v^{-λ}$. A discussion of our results is presented.
description: 11 pages including 3 figures and 2 tables, accepted in A&A
Amerohelea galindoi Grogan and Wirth, 1981: 1294
Creators: name: William L. Grogan, Jr.
name: Spinelli
name: Ronderos, María M.
name: Carla
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Ceratopogonidae
Amerohelea
Amerohelea galindoi

description: Amerohelea galindoi Grogan and Wirth
 Amerohelea galindoi Grogan and Wirth, 1981: 1294 (Colombia; Panama, Venezuela); Borkent and Spinelli 2000: 59 (in New World catalog south of the USA; distribution); Borkent and Spinelli 2007: 92 (in Neotropical catalog; distribution).
 Discussion. This strictly New World predaceous genus is primarily Neotropical with only one species, A. frontispina (Dow and Turner), occurring in the Nearctic region as far north as California and Texas (Borkent and Grogan 2009). We provide the first Caribbean records of Amerohelea from Guadeloupe.
 New records. Guadeloupe, Basse Terre, Trace des Cretes (D-14), 22-V-2012, R. H. Turnbow, BL trap, 6 males, 5 females. New Guadeloupe record.
description: Published as part of William L. Grogan, Jr., Spinelli, Ronderos, María M. & Carla, 2013, The biting and predaceous midges of Guadeloupe Diptera: Ceratopogonidae). I. Species of the subfamily Ceratopogoninae, pp. 1-21 in Insecta Mundi 2013 (324) on page 11, DOI: 10.5281/zenodo.5178313
Trichomycterus taroba Wosiacki & Garavello 2004
Creators: name: De Oliveira, Rianne C.
name: Ota, Renata R.
name: Deprá, Gabriel C.
name: Zawadzki, Cláudio H.
name: Pavanelli, Carla S.
name: Da Graça, Weferson J.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Siluriformes
Trichomycteridae
Trichomycterus
Trichomycterus taroba

description: Trichomycterus taroba Wosiacki & Garavello, 2004: 11, fig. 6.
Paratypes: 1 lot, 3 specimens —NUP 1616, 3, 47.4–53.8 mm SL: Brazil, Paraná, Foz do Jordão, Jordão reservoir, rio Jordão near at its mouth, tributary of rio Iguaçu, rio Paraná Basin, 25°45’S, 52°10’W, Nupélia & Copel staffs, Aug 1995.
Remarks: Valid as Cambeva taroba (Wosiacki & Garavello 2004) (see Donin et al., 2020).
description: Published as part of De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S. & Da Graça, Weferson J., 2022, Catalog of type specimens of the fish collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade Estadual de Maringá Paraná, Brazil, pp. 1-43 in Zootaxa 5128 (1) on page 31, DOI: 10.11646/zootaxa.5128.1.1, http://zenodo.org/record/6479497
A size-dependent ductile fracture model: Constitutive equations, Numerical implementation and Validation
Creators: name: Scherer, J. M.
name: Hure, J.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Size effects have been predicted at the micro- or nano-scale for porous ductile materials from Molecular Dynamics, Discrete Dislocation Dynamics and Continuum Mechanics numerical simulations, as a consequence of Geometrically Necessary Dislocations or due to the presence of a void matrix interface. As voids size decreases, higher stresses are needed to deform the material, for a given porosity. However, the majority of the homogenized models for porous materials used in ductile fracture modeling are size-independent, even though micrometric or nanometric voids are commonly observed in structural materials. Based on yield criteria proposed in the literature for nanoporous materials, a size-dependent homogenized model for porous materials is proposed for axisymmetric loading conditions, including void growth and coalescence as well as void shape effects. Numerical implementation of the constitutive equations is detailed. The homogenized model is validated through comparisons to porous unit cells finite element simulations that consider interfacial stresses, consistently with the model used for the derivation of the yield criteria, aiming at modeling an additional hardening at the void matrix interface. Potential improvements of the model are finally discussed with respect to the theoretical derivation of refined yield criteria and evolution laws.
A Matter of Interpretation: Bargaining over Ambiguous Contracts
Creators: name: Grant, Simon
name: Kline, Jeff
name: Quiggin, John
name: Grant, Simon
name: Kline, Jeff
name: Quiggin, John
Publisher: name: Unknown
Year: 2009
Subjects: subject: Risk and Uncertainty
subject: ambiguity
subject: bounded rationality
subject: expected uncertain utility
subject: incomplete contracts
subject: liquidated damages

description: We present a formal treatment of contracting in the face of ambiguity. The central idea is that boundedly rational individuals will not always interpret the same situation in the same way. More specifically, even with well defined contracts, the precise actions to be taken by each party to the contract might be disputable. Taking this potential for dispute into account, we analyze the effects of ambiguity on contracting. We find that risk averse agents will engage in ambiguous contracts for risk sharing reasons. We provide an application where ambiguity motivates the use of a liquidated damages contract.
Single-participant structural similarity matrices lead to greater accuracy in classification of participants than function in autism in MRI
Creators: name: Leming, Matthew J.
name: Baron-Cohen, Simon
name: Suckling, John
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021
Subjects: Research
Autism
Deep learning
Functional connectivity
Structural similarity

description: Funder: Gates Cambridge Trust; doi: http://dx.doi.org/10.13039/501100005370
description: Funder: Marmaduke Sheild
description: Funder: NIHR Biomedical Research Centre
description: Abstract: Background: Autism has previously been characterized by both structural and functional differences in brain connectivity. However, while the literature on single-subject derivations of functional connectivity is extensively developed, similar methods of structural connectivity or similarity derivation from T1 MRI are less studied. Methods: We introduce a technique of deriving symmetric similarity matrices from regional histograms of grey matter volumes estimated from T1-weighted MRIs. We then validated the technique by inputting the similarity matrices into a convolutional neural network (CNN) to classify between participants with autism and age-, motion-, and intracranial-volume-matched controls from six different databases (29,288 total connectomes, mean age = 30.72, range 0.42–78.00, including 1555 subjects with autism). We compared this method to similar classifications of the same participants using fMRI connectivity matrices as well as univariate estimates of grey matter volumes. We further applied graph-theoretical metrics on output class activation maps to identify areas of the matrices that the CNN preferentially used to make the classification, focusing particularly on hubs. Limitations: While this study used a large sample size, the majority of data was from a young age group; furthermore, to make a viable machine learning study, we treated autism, a highly heterogeneous condition, as a binary label. Thus, these results are not necessarily generalizable to all subtypes and age groups in autism. Results: Our models gave AUROCs of 0.7298 (69.71% accuracy) when classifying by only structural similarity, 0.6964 (67.72% accuracy) when classifying by only functional connectivity, and 0.7037 (66.43% accuracy) when classifying by univariate grey matter volumes. Combining structural similarity and functional connectivity gave an AUROC of 0.7354 (69.40% accuracy). Analysis of classification performance across age revealed the greatest accuracy in adolescents, in which most data were present. Graph analysis of class activation maps revealed no distinguishable network patterns for functional inputs, but did reveal localized differences between groups in bilateral Heschl’s gyrus and upper vermis for structural similarity. Conclusion: This study provides a simple means of feature extraction for inputting large numbers of structural MRIs into machine learning models. Our methods revealed a unique emphasis of the deep learning model on the structure of the bilateral Heschl’s gyrus when characterizing autism.
Survey of Attacks and Defenses on Edge-Deployed Neural Networks
Creators: name: Isakov, Mihailo
name: Gadepally, Vijay
name: Gettings, Karen M.
name: Kinsy, Michel A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cryptography and Security (cs.CR)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Deep Neural Network (DNN) workloads are quickly moving from datacenters onto edge devices, for latency, privacy, or energy reasons. While datacenter networks can be protected using conventional cybersecurity measures, edge neural networks bring a host of new security challenges. Unlike classic IoT applications, edge neural networks are typically very compute and memory intensive, their execution is data-independent, and they are robust to noise and faults. Neural network models may be very expensive to develop, and can potentially reveal information about the private data they were trained on, requiring special care in distribution. The hidden states and outputs of the network can also be used in reconstructing user inputs, potentially violating users' privacy. Furthermore, neural networks are vulnerable to adversarial attacks, which may cause misclassifications and violate the integrity of the output. These properties add challenges when securing edge-deployed DNNs, requiring new considerations, threat models, priorities, and approaches in securely and privately deploying DNNs to the edge. In this work, we cover the landscape of attacks on, and defenses, of neural networks deployed in edge devices and provide a taxonomy of attacks and defenses targeting edge DNNs.
Stability of six-dimensional hyperstring braneworlds
Creators: name: Ringeval, Christophe
name: Peter, Patrick
name: Uzan, Jean-Philippe
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study a six-dimensional braneworld model with infinite warped extra dimensions in the case where the four-dimensional brane is described by a topological vortex of a U(1) symmetry-breaking Abelian Higgs model in presence of a negative cosmological constant. A detailed analysis of the microscopic parameters leading to a finite volume space-time in the extra dimensions is numerically performed. As previously shown, we find that a fine-tuning is required to avoid any kind of singularity on the brane. We then discuss the stability of the vortex by investigating the scalar part of the gauge-invariant perturbations around this fine-tuned configuration. It is found that the hyperstring forming Higgs and gauge fields, as well as the background metric warp factors, cannot be perturbed at all, whereas transverse modes can be considered stable. The warped space-time structure that is imposed around the vortex thus appears severely constrained and cannot generically support nonempty universe models. The genericness of our conclusions is discussed; this will shed some light on the possibility of describing our space-time as a general six-dimensional warped braneworld.
description: 26 pages, 13 figures, uses RevTex, fine-tuning and stability analysis discussed in greater details. Matches published version
Repercussions of the global economic crisis caused by the Covid-19 pandemic on economic blocs – The new NAFTA as a model
Creators: name: Benharzallah, Mourad
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 389901
subject: Comparative economic systems

description: This study seeks to clarify the repercussions of the global economic crisis caused by the Covid-19 pandemic on economic blocs, using the New North American Free Trade Agreement, i.e. NAFTA New, as a model, and this economic bloc includes the United States of America, Canada, and Mexico. It was first established on January 1, 1994, to be resurrected in a new format under the name of the new NAFTA, although there were other designations that the study mentioned in some detail. After presenting an economic evaluation of the impact of this agreement on member states in light of the Covid pandemic, the study was concluded by highlighting the effects of the economic crisis of the Covid pandemic on each member state, and how the bloc contributed to reducing it.
Applications of Linear Defeasible Logic: combining resource consumption and exceptions to energy management and business processes
Creators: name: Olivieri, Francesco
name: Governatori, Guido
name: Tomazzoli, Claudio
name: Cristani, Matteo
Publisher: name: arXiv
Year: 2019
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Logic in Computer Science (cs.LO)
subject: Multiagent Systems (cs.MA)
subject: FOS: Computer and information sciences

description: Linear Logic and Defeasible Logic have been adopted to formalise different features of knowledge representation: consumption of resources, and non monotonic reasoning in particular to represent exceptions. Recently, a framework to combine sub-structural features, corresponding to the consumption of resources, with defeasibility aspects to handle potentially conflicting information, has been discussed in literature, by some of the authors. Two applications emerged that are very relevant: energy management and business process management. We illustrate a set of guide lines to determine how to apply linear defeasible logic to those contexts.
description: In Proceedings DICE-FOPARA 2019, arXiv:1908.04478. arXiv admin note: substantial text overlap with arXiv:1809.03656
The Computation of Perfect and Proper Equilibrium for Finite Games via Simulated Annealing
Creators: name: McDonald, Stuart
name: Wagner, Liam
name: McDonald, Stuart
name: Wagner, Liam
Publisher: name: Unknown
Year: 2010
Subjects: subject: Institutional and Behavioral Economics
subject: Game Theory

description: This paper exploits an analogy between the “trembles” that underlie the functioning of simulated annealing and the player “trembles” that underlie the Nash refinements known as perfect and proper equilibrium. This paper shows that this relationship can be used to provide a method for computing perfect and proper equilibria of n-player strategic games. This paper also shows, by example, that simulated annealing can be used to locate a perfect equilibrium in an extensive form game.
Uncertainty and Technical Efficiency in Finnish Agriculture: A State-contingent Approach
Creators: name: Nauges, Celine
name: O'Donnell, Christopher
name: Quiggin, John
name: Nauges, Celine
name: O'Donnell, Christopher
name: Quiggin, John
Publisher: name: Unknown
Year: 2010
Subjects: subject: Production Economics
subject: Risk and Uncertainty
subject: state-contingent
subject: production
subject: uncertainty

description: In this article, we present one of the first real-world empirical applications of state-contingent production theory. Our state-contingent behavioral model allows us to analyze production under both inefficiency and uncertainty without regard to the nature of producer risk preferences. Using farm data for Finland, we estimate a flexible production model that permits substitutability between state-contingent outputs. We test empirically, and reject, an assumption that has been implicit in almost all efficiency studies conducted in the last three decades, namely that the production technology is output-cubical, i.e., that outputs are not substitutable between states of nature.
Possibility of f-wave spin-triplet superconductivity in the CoO superconductor: a case study on a 2D triangular lattice in the repulsive Hubbard model
Creators: name: Ikeda, Hiroaki
name: Nisikawa, Yunori
name: Yamada, Kosaku
Publisher: name: arXiv
Year: 2003
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Stimulated by the recent finding of Na$_{0.35}$CoO$_2$.1.3H$_2$O superconductor, we investigate superconducting instabilities on a 2D triangular lattice in the repulsive Hubbard model. Using the third-order perturbation expansion with respect to the on-site repulsion $U$, we evaluate the linearized Dyson-Gor'kov equation. We find that an $f$-wave spin-triplet pairing is the most stable in a wide range of the next nearest neighbor hopping integral $t'$ and an electron number density $n$. The introduction of $t'$ is crucial to adjust the van Hove singularities to the neighborhood of the Fermi surface crossing around K point. In this case, the bare spin susceptibility shows the broad peak around $Γ$ point. These conditions stabilize the $f$-wave pairing. Although the $f$-wave pairing is also given by the fluctuation-exchange approximation, the transition temperature is too low to be observed. This is because the depairing effect by the spin fluctuation is over-estimated. Thus, the third-order vertex corrections are important for the spin-triplet superconductivity, like the case in Sr$_2$RuO$_4$.
description: 4 pages, 7 figures
Production Under Uncertainty: A Simulation Study
Creators: name: Shankar, Sriram
name: O'Donnell, Christopher
name: Quiggin, John
name: Shankar, Sriram
name: O'Donnell, Christopher
name: Quiggin, John
Publisher: name: Unknown
Year: 2010
Subjects: subject: Production Economics
subject: Risk and Uncertainty
subject: CES
subject: Cobb-Douglas
subject: OLS
subject: output-cubical
subject: risk-neutral
subject: state-allocable
subject: state-contingent

description: In this article we model production technology in a state-contingent framework. Our model analyzes production under uncertainty without regard to the nature of producer risk preferences. In our model producers? risk preferences are captured by the risk-neutral probabilities they assign to the different states of nature. Using a state-general state-contingent specification of technology we show that rational producers who encounter the same stochastic technology can make significantly different production choices. Further, we develop an econometric methodology to estimate the risk-neutral probabilities and the parameters of stochastic technology when there are two states of nature and only one of which is observed. Finally, we simulate data based on our state-general state-contingent specification of technology. Biased estimates of the technology parameters are obtained when we apply conventional ordinary least squares (OLS) estimator on the simulated data.
CITY-MOVE - Mapping routine-data for physical activity: Implementing GAPPA across six cities
Creators: name: De Deurwaerder, Oberon
name: Thornton, Lukar
name: Correa, Juan Carlos
name: van Exel, Job
name: Wouters, Edwin
Publisher: name: City-Move
Year: 2024
Subjects: Indicator framework
Physical activity
GAPPA

description: Poster presented at the Urban Transitions Conference 2024, displaying the work done for the fourth work package of City-Move.
A Parabolic Relaxation Model for the Navier-Stokes-Korteweg Equations
Creators: name: Hitz, Timon
name: Keim, Jens
name: Munz, Claus-Dieter
name: Rohde, Christian
Publisher: name: arXiv
Year: 2019
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The isothermal Navier-Stokes-Korteweg system is a classical diffuse interface model for compressible two-phase flow. However, the numerical solution faces two major challenges: due to a third-order dispersion contribution in the momentum equations, extended numerical stencils are required for the flux calculation. Furthermore, the equation of state given by a Van-der-Waals law, exhibits non-monotone behaviour in the two-phase state space leading to imaginary eigenvalues of the Jacobian of the first-order fluxes. In this work a lower-order parabolic relaxation model is used to approximate solutions of the classical NSK equations. Whereas an additional parabolic evolution equation for the relaxation variable has to be solved, the system involves no differential operator of higher as second order. The use of a modified pressure function guarantees that the first-order fluxes remain hyperbolic. Altogether, the relaxation system is directly accessible for standard compressible flow solvers. We use the higher-order Discontinuous Galerkin spectral element method as realized in the open source code FLEXI. The relaxation model is validated against solutions of the original NSK model for a variety of 1D and 2D test cases. Three-dimensional simulations of head-on droplet collisions for a range of different collision Weber numbers underline the capability of the approach.
Palpomyia insularis Spinelli and Grogan
Creators: name: William L. Grogan, Jr.
name: Spinelli
name: Ronderos, María M.
name: Carla
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Ceratopogonidae
Palpomyia
Palpomyia insularis

description: Palpomyia insularis Spinelli and Grogan
 Palpomyia insularis Spinelli and Grogan, 1989: 3 (Puerto Rico); Borkent and Spinelli 2000: 63 (in New World catalog south of the USA; distribution); Borkent and Spinelli 2007: 96 (in Neotropical catalog; distribution).
 Discussion. As noted by Spinelli and Grogan (1989), this Neotropical predaceous midge is a member of the Palpomyia distincta group as defined by Grogan and Wirth (1975, 1979). It was originally known from Dominica, Jamaica and Puerto Rico (type locality); we provide the first records of this predaceous midge from Guadeloupe.
 New records. Guadeloupe, Basse Terre, Bois Malher, 9-IX-2010, MC Thomas & RH Turnbow, Blacklight trap, 2 males, 1 female; same data except Corrosol, 8-IX-2010, 1 male; same data except Trace des Cretes (D-14), 22-V-2012, R. H. Turnbow, BL trap, 1 male, 2 females. New Guadeloupe record .
description: Published as part of William L. Grogan, Jr., Spinelli, Ronderos, María M. & Carla, 2013, The biting and predaceous midges of Guadeloupe Diptera: Ceratopogonidae). I. Species of the subfamily Ceratopogoninae, pp. 1-21 in Insecta Mundi 2013 (324) on page 12, DOI: 10.5281/zenodo.5178313
Economics as a Social Science: Financial Regulation After the Crisis
Creators: name: Quiggin, John
name: Quiggin, John
Publisher: name: Unknown
Year: 2010
Subjects: subject: Financial Economics
subject: Economics as a Social Science

description: One of the most striking developments of the late 20th century was the explosion in the volume, speed and complexity of international financial transactions, and the resulting breakdown of effective regulatory control over the global financial system. The speed with which this process has gone into reverse since the onset of the financial crisis has been equally striking. Transactions in the global foreign exchange market, once confined to financing trade flows, peaked at around $4 trillion per day in mid-2008. At that pace, two days of foreign exchange trading would be sufficient to finance an entire year’s trade flows. The growth of private credit reached an annualised rate of $10 trillion at the same time.
Asymptotic black hole quasinormal frequencies
Creators: name: Motl, Lubos
name: Neitzke, Andrew
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We give a new derivation of the quasinormal frequencies of Schwarzschild black holes in d>=4 and Reissner-Nordstrom black holes in d=4, in the limit of infinite damping. For Schwarzschild in d>=4 we find that the asymptotic real part is T_Hawking.log(3) for scalar perturbations and for some gravitational perturbations; this confirms a result previously obtained by other means in the case d=4. For Reissner-Nordstrom in d=4 we find a specific generally aperiodic behavior for the quasinormal frequencies, both for scalar perturbations and for electromagnetic-gravitational perturbations. The formulae are obtained by studying the monodromy of the perturbation analytically continued to the complex plane; the analysis depends essentially on the behavior of the potential in the "unphysical" region near the black hole singularity.
description: 21 pages, 4 EPS figures, JHEP3 LaTeX; v2: references added, typos corrected, discussion expanded; v3: references added, small changes, clarified relation between Schwarzschild and Reissner-Nordstrom asymptotic frequencies (published version of text)
MyD88 TIR domain higher-order assembly interactions revealed by microcrystal electron diffraction and serial femtosecond crystallography
Creators: name: Clabbers, Max T. B.
name: Holmes, Susannah
name: Muusse, Timothy W.
name: Vajjhala, Parimala R.
name: Thygesen, Sara J.
name: Malde, Alpeshkumar K.
name: Hunter, Dominic J. B.
name: Croll, Tristan I.
name: Flueckiger, Leonie
name: Nanson, Jeffrey D.
name: Rahaman, Md. Habibur
name: Aquila, Andrew
name: Hunter, Mark S.
name: Liang, Mengning
name: Yoon, Chun Hong
name: Zhao, Jingjing
name: Zatsepin, Nadia A.
name: Abbey, Brian
name: Sierecki, Emma
name: Gambin, Yann
name: Stacey, Katryn J.
name: Darmanin, Connie
name: Kobe, Bostjan
name: Xu, Hongyi
name: Ve, Thomas
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021
Subjects: Article
/631/45/535
/631/250/262/2106/2108
/631/535/1258/1259
/631/535/1266/1265
/145
/101/28
/82/80
/82/83
/96/31
/96/95
article

description: Abstract: MyD88 and MAL are Toll-like receptor (TLR) adaptors that signal to induce pro-inflammatory cytokine production. We previously observed that the TIR domain of MAL (MALTIR) forms filaments in vitro and induces formation of crystalline higher-order assemblies of the MyD88 TIR domain (MyD88TIR). These crystals are too small for conventional X-ray crystallography, but are ideally suited to structure determination by microcrystal electron diffraction (MicroED) and serial femtosecond crystallography (SFX). Here, we present MicroED and SFX structures of the MyD88TIR assembly, which reveal a two-stranded higher-order assembly arrangement of TIR domains analogous to that seen previously for MALTIR. We demonstrate via mutagenesis that the MyD88TIR assembly interfaces are critical for TLR4 signaling in vivo, and we show that MAL promotes unidirectional assembly of MyD88TIR. Collectively, our studies provide structural and mechanistic insight into TLR signal transduction and allow a direct comparison of the MicroED and SFX techniques.
Explosive Disruption of Polytropes: a One Dimensional Hydrodynamic Calculation
Creators: name: Wyman, Mark
name: Chernoff, David
name: Wasserman, Ira
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study explosions of stars using a one-dimensional Lagrangian hydrodynamics code. We calculate how much mass is liberated as a function of the energy of explosion for a variety of pre-explosion stellar structures and for equations of state with a range of radiation-to-gas pressure ratios. The results show that simple assumptions about the amount of mass lost in an explosion can be quite inaccurate, and that even one-dimensional stars exhibit a rich phenomenology. The mass loss fraction rises from about 50 to 100 per cent as a function of the explosion energy in an approximately discontinuous manner. Combining our results with those of other, more realistic models, we suggest that Nova Scorpii (J1655-40) may have experienced significant mass fallback because the explosion energy was less than the critical value. We infer that the original progenitor was less than twice the mass of today's remnant.
description: v2: 12 pages, 10 figures, MNRAS LaTeX Macros. Paper contents significantly extended, with one new section and several new figures v3: 13 pages. Version to appear in MNRAS. Text expanded, particularly sections 5 and 6; corrected typos; added two new references
Boundary-to-bulk maps for AdS causal wedges and RG flow
Creators: name: Del Grosso, Nicolás
name: Garbarz, Alan
name: Palau, Gabriel
name: Pérez-Nadal, Guillem
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider the problem of defining spacelike-supported boundary-to-bulk propagators in AdS$_{d+1}$ down to the unitary bound $Δ=(d-2)/2$. That is to say, we construct the `smearing functions' $K$ of HKLL but with different boundary conditions where both dimensions $Δ_+$ and $Δ_-$ are taken into account. More precisely, we impose Robin boundary conditions, which interpolate between Dirichlet and Neumann boundary conditions and we give explicit expressions for the distributional kernel $K$ with spacelike support. This flow between boundary conditions is known to be captured in the boundary by adding a double-trace deformation to the CFT. Indeed, we explicitly show that using $K$ there is a consistent and explicit map from a Wightman function of the boundary QFT to a Wightman function of the bulk theory. In order to accomplish this we have to study first the microlocal properties of the boundary two-point function of the perturbed CFT and prove its wavefront set satisfies the microlocal spectrum condition. This permits to assert that $K$ and the boundary two-point function can be multiplied as distributions.
description: 26 pages, 3 figures
More Competitors or more Competition? Market Concentration and the Intensity of Competition
Creators: name: Menezes, Flavio
name: Quiggin, John
name: Menezes, Flavio
name: Quiggin, John
Publisher: name: Unknown
Year: 2011
Subjects: subject: Production Economics
subject: Research and Development/Tech Change/Emerging Technologies
subject: Competition intensity
subject: Number of competitors
subject: Mergers

description: We present a model of competitive interaction among n symmetric firms producing a homogeneous good that includes both Bertrand and Cournot competition as special cases. In our model the intensity of competition is captured by a single parameter—the perceived slope of competitors’ supply functions. We show that total welfare increases monotonically with the intensity of competition and the number of competitors. We then examine how the intensity of competition affects the gains from changing the number of competitors. When competition is intense, most of the gains from extra competition are captured with the entry of a small number of firms and subsequent gains from entry are small. Conversely, when the intensity of competition is small, a reduction in the number of firms can have a large impact on welfare.
Bunocephalus hertzi Esguicero, Castro & Pereira 2020
Creators: name: De Oliveira, Rianne C.
name: Ota, Renata R.
name: Deprá, Gabriel C.
name: Zawadzki, Cláudio H.
name: Pavanelli, Carla S.
name: Da Graça, Weferson J.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Siluriformes
Aspredinidae
Bunocephalus
Bunocephalus hertzi

description: Bunocephalus hertzi Esguícero, Castro & Pereira, 2020: 111, fig. 4.
Paratypes: 4 lots, 12 specimens —NUP 3880, 6, 49.8–57.4 mm SL: Brazil, Paraná, Maringá, rio Pirapó, rio Paranapanema, 23°19’36”S, 51°50’41”W, Nupélia staff, 17 Sep 2004. NUP 9352, 2, 48.7–52.1 mm SL: Brazil, Mato Grosso do Sul, Itaporã, córrego Sardinha, rio Santa Maria, rio Ivinhema, 22°3’36”S, 54°47’14”W, Y. Súarez et al., 8 Dez 2008. NUP 17492, 1, 53.8 mm SL: Brazil, Paraná, Maringá, rio Pirapó, rio Paranapanema, Brazil, 23°18’10”S, 51°51’43”W, G. Deprá et al., 30 Nov 2012. NUP 17498, 3, 56.5–57.9 mm SL: Brazil, Paraná, Maringá, rio Pirapó, rio Paranapanema, 23°24’3”S, 51°38’26”W, N.C. Ghisi et al., 5 Dec 2012.
description: Published as part of De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S. & Da Graça, Weferson J., 2022, Catalog of type specimens of the fish collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade Estadual de Maringá Paraná, Brazil, pp. 1-43 in Zootaxa 5128 (1) on page 31, DOI: 10.11646/zootaxa.5128.1.1, http://zenodo.org/record/6479497