cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
О близости принципов математического моделирования селей и подводных оползней
Creators: name: Shokin, Yurii
name: Gayaz Khakimzyanov
name: Chubarov, Leonid
name: Gusev, Oleg
name: Beisel, Sofya
Publisher: name: figshare
Year: 2021
Subjects: subject: 49999 Earth Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 40403 Geophysical Fluid Dynamics
subject: 40604 Natural Hazards

description: Целью доклада является представление участникам Конференции созданных авторами математических моделей и численных алгоритмов, предназначенных для моделирования подводных оползней и генерируемых ими поверхностных волн. В частности, речь пойдет об оригинальной модели движения оползня по неровному подводному склону, а также об иерархии математических моделей и численных алгоритмов для исследования генерируемых оползнем поверхностных волн в морских акваториях и ограниченных водохранилищах. Рассматривается возможность адаптации этих разработок к задачам численного исследования селей при их движении в криволинейных наклонных водотоках, а также перспективы создания системы тестов для валидации моделей и верификации алгоритмов расчета селевых потоков.
Оригинальная публикация в сборнике трудов "Математик моделлаштириш, ҳисоблаш математикаси ва дастурий таъминот инженериясининг долзарб муаммолари мавзусидаги Республика илмий анжумани материаллари", Карши, Узбекистан, 23-24 октября 2020
Partitioning Spatial Variation of Juvenile Corals,from Few Centimeters to Kilometers: A Case Study from Mochima National Park, Venezuela.
Creators: name: Rebolledo-Sánchez, Zlatka
name: Aldo, Cróquer.
Publisher: name: Zenodo
Year: 2019
Subjects: corals
early stages
juvenile
Venezuela
spatial variation
coral reef

description: Coral recruitment refers to the processes allowing maintenance and renewal of coral communities. Recruitment success is therefore indispensable for coral reef recovery after disturbances. Recruitment processes are governed by a variety of factors occurring at all spatial and temporal scales, from centimetres to hundreds of kilometres. In the present context of rising disturbances, it is thus of major importance to better understand the relative importance of different scales in this variation. Successful recruitment and survivorship of juveniles is important for shaping the community structure and population dynamics of corals. In Venezuela, most studies have focused on describing the structure of adult coral communities, while corals in their early stages have received less attention.

This study aimed to determine spatial variability of juvenile corals abundance at different spatial scales in Venezuela, in Mochima National Park, Cubagua and Los Frailes. We also tested whether brooders were more abundant than spawnners. For this, we used a fully-nested design encompassing four scales: (1) three localities  (distanced by hundreds of kilometers), (2) twelve sites (distanced by tens of kilometers), (3) four transects within sites (distanced by 5-10 m), (4) fifteen 80x90 cm2 photoquadrats within each transect (distanced by 2 m) and finally, four 25x25 cm sub-quadrats within each quadrat separated to each other by 10-20 cm as replicates. The variance component was estimated for each source of variation with an analysis of variance based on permutation (PERMANOVA). Our study is the first to investigate and measure spatial variation of juvenile corals in Venezuela; and suggests that small-scale processes might play a key role for shaping these communities.

The variability of recruitment patterns at various spatial scales emphasises the importance of micro- to macro-local variations of the environment in the dynamics and maintenance of coral populations. In this study the smallest spatial scales have more impact in the variability patterns.
description: 39th scientific meeting of the Association of Marine Laboratories of the Caribbean. Punta Cana, 2019 (AMLC), Punta Cana, Dominican Republic, 20-24 May 2019
Updated analysis of NN elastic scattering to 3 GeV
Creators: name: Arndt, R. A.
name: Briscoe, W. J.
name: Strakovsky, I. I.
name: Workman, R. L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A partial-wave analysis of NN elastic scattering data has been updated to include a number of recent measurements. Experiments carried out at the Cooler Synchrotron (COSY) by the EDDA Collaboration have had a significant impact above 1 GeV. Results are discussed in terms of the partial-wave and direct-reconstruction amplitudes.
description: 16 pages, 14 figures, 2 tables; Fig 10 error corrected; Accepted for publication in Physical Review C
Pairing Fluctuation Corrections to the Kinetic Theory of Liquid $^3\mathrm{He}$
Creators: name: Lin, Wei-Ting
name: Sauls, J. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Liquid $^3\mathrm{He}$ is a Fermi liquid that undergoes a BCS-type phase transition to a spin-triplet superfluid, making it valuable for understanding interacting fermions. When the temperature approaches the transition temperature $T_{\mathrm{c}}$ from above, physical properties can be modified by Cooper pair fluctuations, leading to deviations from the predictions of Fermi liquid theory. We use nonequilibrium Green's function theory to study the role of pair fluctuations on quasiparticle transport. The Boltzmann-Landau kinetic equation, which describes the transport properties of Fermi liquids, acquires corrections from the interaction of quasiparticles with pair fluctuations. As an application, we study the effects of pair fluctuations on the propagation of zero sound in liquid $^3\mathrm{He}$. We calculate the temperature-dependent correction to the zero sound velocity due to pair fluctuations, and compare the result with existing experimental data.
description: 10 pages, 2 figures with appendix
Rainbow-link: Beam-Alignment-Free and Grant-Free mmW Multiple Access using True-Time-Delay Array
Creators: name: Li, Ruifu
name: Yan, Han
name: Cabric, Danijela
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The millimeter-wave (mmW) communications is a key enabling technology in 5G to provide ultra-high throughput. Current mmW technologies rely on analog phased arrays to realize beamforming gain and overcome high path loss. However, due to a limited number of simultaneous beams that can be created with analog/hybrid phased antenna arrays, the overheads of beam training and beam scheduling become a bottleneck for emerging networks that need to support a large number of users and low latency applications. This paper introduces rainbow-link, a novel multiple access protocol, that can achieve low latency and massive connectivity by exploiting wide bandwidth at mmW frequencies and novel analog true-time-delay array architecture with frequency dependent beamforming capability. In the proposed design, the network infrastructure is equipped with the true-time-delay array to simultaneously steer different frequency resource blocks towards distinct directions covering the entire cell sector. Users or devices, equipped with a narrowband receiver and either a single antenna or small phased antenna array, connect to the network based on their angular positions by selecting frequency resources within their rainbow beam allocation. Rainbow-link is combined with a contention-based grant-free access to eliminate the explicit beam training and user scheduling. The proposed design and analysis show that rainbow-link grant-free access is a potential candidate for latency-critical use cases within massive connectivity. Our results show that, given less than 1e-5 probability of packet loss, a rainbow-link cell, over 1 GHz bandwidth using 64 element antenna array, attains sub-millisecond user-plane latency and Mbps user rates with an approximate 400m line-of-sight coverage and a density of up to 5 active single antenna users per second per meter square.
description: Accepted for JSAC issue on Next Generation Multiple Access (NGMA). Available on IEEE Xplore JSAC Early Access
Cosmic X-ray background and Earth albedo Spectra with Swift/BAT
Creators: name: Ajello, M.
name: Greiner, J.
name: Sato, G.
name: Willis, D. R.
name: Kanbach, G.
name: Strong, A. W.
name: Diehl, R.
name: Hasinger, G.
name: Gehrels, N.
name: Markwardt, C. B.
name: Tueller, J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use Swift/BAT Earth occultation data at different geomagnetic latitudes to derive a sensitive measurement of the Cosmic X-ray background (CXB) and of the Earth albedo emission in the 15--200 keV band. We compare our CXB spectrum with recent (INTEGRAL, BeppoSAX) and past results (HEAO-1) and find good agreement. Using an independent measurement of the CXB spectrum we are able to confirm our results. This study shows that the BAT CXB spectrum has a normalization ~8(+/-3)% larger than the HEAO-1 measurement. The BAT accurate Earth albedo spectrum can be used to predict the level of photon background for satellites in low Earth and mid inclination orbits.
description: Accepted for publication in the Astrophysical Journal. 38 Pages, 16 Figures, 2 Tables
Genetic diversity and utilization of cultivated bitter gourd (Momordica charantia var. muricata) germplasm for varietal development
Creators: name: S. Priyadharshini
name: , K.Kumanan
name: Devi, A. Nithya
Publisher: name: Zenodo
Year: 2021
Subjects: Midhipagal, antioxidant enzyme, sodicity, chlorophyll content, proline content

description: Sodicity is a major abiotic stress reducing the yield of a wide variety of crops all over the world. In order to investigate the antioxidant enzymes activity of 30 mithipagal genotypes to the sodicity tolerance a study was taken up at Horticultural College and Research Institute for Women, Tiruchirappalli. The plants are exposed to severe salt stress, suffered from membrane destabilization and general nutrient imbalances that altered their physiology and defence mechanisms. The antioxidant enzyme system of plants plays an important role in the scavenging of Reactive Oxygen Species (ROS) that accumulate during stress and is the first line of defence to counter the deleterious stress effects. Proline content significantly increased in salt-tolerant mithipagal genotypes and the highest proline content was obtained from MCM-19 (Naduvakurichi local) under sodic soil condition. Catalase and peroxidase activities significantly decreased in salt-sensitive genotype whereas significantly increased in salt-tolerant genotypes. The salt-tolerant genotype MCM-19 (Naduvakurichi local) maintained higher levels of chlorophyll and proline contents as well as catalase and peroxidase activities under sodic soil condition followed by MCM-22 (Puthiyamputhur local) and MCM-21 (Arupukottai local), ROS, could be the underlying mechanism for salt tolerance. The longer term goal, however, will be to develop mithipagal varieties that combine high levels of sodicity tolerance, significant pharmacological effects and high yield.
Determination of drained and undrained soil parameters using the screw plate test
Creators: name: Berzins, William Edward
Publisher: name: University of British Columbia
Year: 2010

description: An evaluation of the screw plate test for use in the determination of soil deformation behavior is presented. Current methods of analysis are used to interpret the screw plate data, and the limitations of each method are discussed. As a result of the extensive test programme, the screw plate is found to provide reproducible estimates of drained moduli in sands, and undrained shear strengths in clays. Screw plate tests were performed at three research sites where clay, silt, and sand lithologies are encountered. Comparisons are made between deformation parameters obtained from the screw plate test, and those obtained from the pressuremeter, cone penetrometer, dilatometer, vane shear, and triaxial tests. Published correlations are used where applicable, and confirm the suitability of the screw plate test for field investigations in a variety of soil conditions. The development of a unique test apparatus is also detailed. Special features of this system include the automation of plate insertion, the controlled application of rapid cyclic load histories, and the retrieval of the plate upon completion of the sounding. The adaptation of this system to a conventional hydraulic jacking unit is also described. Based upon this systematic evaluation of the screw plate test, recommended test procedures and methods of analysis are also summarized. Suggested topics for future research are presented which would further enhance the applicability of the test to foundation design problems.
WiFi4EU broken by technical specifications - a year of misery & new allies
Creators: name: Bransky, Gregor
Publisher: name: Zenodo
Year: 2019
Subjects: WIFI4EU, GDPR, Freifunk, civil liberties, WLAN, WIFI, Open WLAN, Open WIFI, DSM, digital single market

description: With the Wifi4EU programm the EU is planning to spend 100 million € by 2020 to subsidise a centralized surveillance infrastructure for centers of public life in the EU. The talk will lay out how Wifi4EU is supposed to work both administratively and technically, where there are problems with the later and what is and can be done about it.

With the Wifi4EU programm [1] the EU is planning to subsidies the installation of free Wi-Fi with 120 million € until 2020. The installations are planned to be "... free of charge, free of advertising and free from commercial re-use of data. ..." [2] and aim "... to equip every European village and every city with free wireless internet access around the main centres of public life. ..." [1]

Unfortunately the technical specifications implemented in the first call on the 7th - 9th of November 2018 [3] and the second call on the 4th- 5th of April 2019 [4] tell a different story. So far 93 Million € are planned to be spend in a flawed design.

Amongst other problems they include:

	requirements for a centralized authentification infrastructure - like eduroam [5] (FAQ 23),
	inherent IT security problems - embedded snippets in the captive portals [5] (FAQ 26) and
	proprietary standards - hotspot 2.0. [5] (FAQ 27)

Following a talk at the Wireless Community Weekend 2018 in May 2018 [6] and the 35c3 refreshing memories [7][8] talk will include:

	a short introduction to the programm,
	how it came to be,
	what happend so far
	the implications of the programm
	what can be done to fix things.

Besides contacting the european comission, several members of the european parlament and Klaus Landefeld of the eco [9] we were able to get members of the german Bundestag to get interested in the issue [10]. This led to a "schriftliche Anfrage" towards the Bundesregierung regarding the GDPR compliance of the authentification infrastructure, the situation is currently evolving.

Futhermore an open letter [11]  to the european data protection supervisor (EDPS) Giovanni  Buttarelli [12] was answered and included the following passage:

"... The EDPS was not consulted in this context. From a technical perspective, an open and secure WiFi network does

not in principle require any form of user registration and authentication, in line with the

principle of data minimisation. ..."

Unfortunatley the inquiry by the EDPS towards the european comission was not answered at the 29th of May 2019.

The talk aims to inform about the current state of affairs and hoefully foster a discussion during the congress what can and should be done to prohibit the creation of yet another surveillance infrastructure and what a desirable public Wi-Fi infrastructure should look like.
Proper condensates
Creators: name: Buchholz, Detlev
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this article a novel characterization of Bose-Einstein condensates is proposed. Instead of relying on occupation numbers of a few dominant modes, which become macroscopic in the limit of infinite particle numbers, it focuses on the regular excitations whose numbers stay bounded in this limit. In this manner, subspaces of global, respectively local regular wave functions are identified. Their orthogonal complements determine the wave functions of particles forming proper (infinite) condensates in the limit. In contrast to the concept of macroscopic occupation numbers, which does not sharply fix the wave functions of condensates in the limit states, the notion of proper condensates is unambiguously defined. It is outlined, how this concept can be used in the analysis of condensates in models. The method is illustrated by the example of trapped non-interacting ground states and their multifarious thermodynamic limits, differing by the structure of condensates accompanying the Fock vacuum. The concept of proper condensates is also compared with the Onsager-Penrose criterion, based on the analysis of eigenvalues of one-particle density matrices. It is shown that the concept of regular wave functions is useful there as well for the identification of wave functions forming proper condensates.
description: 18 pages, no figures; v2: dedicated to Helmut Reeh on his 90th birthday; typos removed; to appear in Journal of Mathematical Physics
Fluctuations of Particle Yield Ratios in Heavy-Ion Collisions
Creators: name: Tawfik, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the dynamical fluctuations of various particle yield ratios at different incident energies. Assuming that the particle production yields in the hydronic final state are due to equilibrium chemical processes ($γ=1$), the experimental results available so far are compared with the hadron resonance gas model (HRG) taking into account the limited momentum acceptance in heavy-ion collisions experiments. Degenerated light and conserved strange quarks are presumed at all incident energies. At the SPS energies, the HRG with $γ=1$ provides a good description for the measured dynamical fluctuations in $(K^++K^-)/(π^++π^-)$. To reproduce the RHIC results, $γ$ should be larger than one. We also studied the dynamical fluctuations of $(p+\bar{p})/(π^++π^-)$. It is obvious that the energy-dependence of these dynamical fluctuations is non-monotonic.
description: 8 pages, 2 eps figures and 1 table
BVMatch: Lidar-based Place Recognition Using Bird's-eye View Images
Creators: name: Luo, Lun
name: Cao, Si-Yuan
name: Han, Bin
name: Shen, Hui-Liang
name: Li, Junwei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Recognizing places using Lidar in large-scale environments is challenging due to the sparse nature of point cloud data. In this paper we present BVMatch, a Lidar-based frame-to-frame place recognition framework, that is capable of estimating 2D relative poses. Based on the assumption that the ground area can be approximated as a plane, we uniformly discretize the ground area into grids and project 3D Lidar scans to bird's-eye view (BV) images. We further use a bank of Log-Gabor filters to build a maximum index map (MIM) that encodes the orientation information of the structures in the images. We analyze the orientation characteristics of MIM theoretically and introduce a novel descriptor called bird's-eye view feature transform (BVFT). The proposed BVFT is insensitive to rotation and intensity variations of BV images. Leveraging the BVFT descriptors, we unify the Lidar place recognition and pose estimation tasks into the BVMatch framework. The experiments conducted on three large-scale datasets show that BVMatch outperforms the state-of-the-art methods in terms of both recall rate of place recognition and pose estimation accuracy. The source code of our method is publicly available at https://github.com/zjuluolun/BVMatch.
Operads of compatible structures and weighted partitions
Creators: name: Strohmayer, Henrik
Publisher: name: arXiv
Year: 2007
Subjects: subject: Algebraic Topology (math.AT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 18D50 (Primary); 05A18 (Secondary)

description: In this paper we describe operads encoding two different kinds of compatibility of algebraic structures. We show that there exist decompositions of these in terms of black and white products and we prove that they are Koszul for a large class of algebraic structures by using the poset method of B. Vallette. In particular we show that this is true for the operads of compatible Lie, associative and pre-Lie algebras.
description: 16 pages, main result about Koszulness generalized to a large class of compatible structures
Pseudo-maximization and self-normalized processes
Creators: name: de la Peña, Victor H.
name: Klass, Michael J.
name: Lai, Tze Leung
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60K35, 60K35 (Primary) 60K35 (Secondary)

description: Self-normalized processes are basic to many probabilistic and statistical studies. They arise naturally in the the study of stochastic integrals, martingale inequalities and limit theorems, likelihood-based methods in hypothesis testing and parameter estimation, and Studentized pivots and bootstrap-$t$ methods for confidence intervals. In contrast to standard normalization, large values of the observations play a lesser role as they appear both in the numerator and its self-normalized denominator, thereby making the process scale invariant and contributing to its robustness. Herein we survey a number of results for self-normalized processes in the case of dependent variables and describe a key method called ``pseudo-maximization'' that has been used to derive these results. In the multivariate case, self-normalization consists of multiplying by the inverse of a positive definite matrix (instead of dividing by a positive random variable as in the scalar case) and is ubiquitous in statistical applications, examples of which are given.
description: Published in at http://dx.doi.org/10.1214/07-PS119 the Probability Surveys (http://www.i-journals.org/ps/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Open quantum dynamics theory on the basis of periodical system-bath model for discrete Wigner function
Creators: name: Iwamoto, Yuki
name: Tanimura, Yoshitaka
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Discretizing a distribution function in a phase space for an efficient quantum dynamics simulation is a non-trivial challenge, in particular for a case that a system is further coupled to environmental degrees of freedom. Such open quantum dynamics is described by a reduced equation of motion (REOM) most notably by a quantum Fokker-Planck equation (QFPE) for a Wigner distribution function (WDF). To develop a discretization scheme that is stable for numerical simulations from the REOM approach, we employ a two-dimensional (2D) periodically invariant system-bath (PISB) model with two heat baths. This model is an ideal platform not only for a periodic system but also for a non-periodic system confined by a potential. We then derive the numerically ''exact'' hierarchical equations of motion (HEOM) for a discrete WDF in terms of periodically invariant operators in both coordinate and momentum spaces. The obtained equations can treat non-Markovian heat-bath in a non-perturbative manner at finite temperatures regardless of the mesh size. As demonstrations, we numerically integrate the discrete QFPE for a 2D free rotor and harmonic potential systems in a high-temperature Markovian case using a coarse mesh with initial conditions that involve singularity.
description: 20 pages 5 figures
Identifying Deficiencies of Standard Accretion Disk Theory: Lessons from a Mean-Field Approach
Creators: name: Hubbard, Alexander
name: Blackman, Eric G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Turbulent viscosity is frequently used in accretion disk theory to replace the microphysical viscosity in order to accomodate the observational need for in- stabilities in disks that lead to enhanced transport. However, simply replacing the microphysical transport coefficient by a single turbulent transport coeffi- cient hides the fact that the procedure should formally arise as part of a closure in which the hydrodynamic or magnetohydrodynamic equations are averaged, and correlations of turbulent fluctuations are replaced by transport coefficients. Here we show how a mean field approach leads quite naturally two transport coefficients, not one, that govern mass and angular momentum transport. In particular, we highlight that the conventional approach suffers from a seemingly inconsistent neglect of turbulent diffusion in the surface density equation. We constrain these new transport coefficients for specific cases of inward, outward, and zero net mass transport. In addition, we find that one of the new transport terms can lead to oscillations in the mean surface density which then requires a constant or small inverse Rossby number for disks to maintain a monotonic power-law surface density.
description: 11 pages
SolType: Refinement Types for Arithmetic Overflow in Solidity
Creators: name: Tan, Bryan
name: Mariano, Benjamin
name: Lahiri, Shuvendu K.
name: Dillig, Isil
name: Feng, Yu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: As smart contracts gain adoption in financial transactions, it becomes increasingly important to ensure that they are free of bugs and security vulnerabilities. Of particular relevance in this context are arithmetic overflow bugs, as integers are often used to represent financial assets like account balances. Motivated by this observation, this paper presents SolType, a refinement type system for Solidity that can be used to prevent arithmetic over- and under-flows in smart contracts. SolType allows developers to add refinement type annotations and uses them to prove that arithmetic operations do not lead to over- and under-flows. SolType incorporates a rich vocabulary of refinement terms that allow expressing relationships between integer values and aggregate properties of complex data structures. Furthermore, our implementation, called Solid, incorporates a type inference engine and can automatically infer useful type annotations, including non-trivial contract invariants. To evaluate the usefulness of our type system, we use Solid to prove arithmetic safety of a total of 120 smart contracts. When used in its fully automated mode (i.e., using Solid's type inference capabilities), Solid is able to eliminate 86.3% of redundant runtime checks used to guard against overflows. We also compare Solid against a state-of-the-art arithmetic safety verifier called VeriSmart and show that Solid has a significantly lower false positive rate, while being significantly faster in terms of verification time.
description: To appear in POPL '22. This is the extended version of the paper with the proofs, after the main text went through peer review. 51 pages, 15 figures
Pressuremeter tests in sand : effects of dilation
Creators: name: Eldridge, Terry Lewis
Publisher: name: University of British Columbia
Year: 2010

description: An analysis of the response of sand to the pressuremeter is presented. An incremental linear elastic finite element program incorporating shear-volume coupling was modified such that it could efficiently handle axisymmetric plane strain stress-deformation problems. The shear-volume model was modified so that it gave a reasonable approximation to triaxial test data. A modified form of Rowe's stress dilatancy theory was used in the shear-volume coupling model. The finite element program was used to analyze the pressuremeter test conditions. The distribution of displacements, strains and stresses around the pressuremeter were determined for soils with various volumetric responses to shear. Upon full mobilization of the soils strength, volume change characteristics have no effect on the stress distribution in the failed zone. The distribution of strain does depend upon the volume change characteristics, but beyond about three cylinder radii, such effects are small. The assumed shape of the soil stress-strain relation significantly affects the computed response to pressuremeter type loading. An elastic-plastic material is much stiffer than a non-linear elastic material with the same initial modulus and strength. Dilation stiffens a material's response, but even a highly dilatant material is less stiff than an elastic-plastic material. The method of determining the friction angle and dilation angle of frictional materials from pressuremeter data proposed by Hughes, Wroth and Windle was checked in the analysis. The method gives results in good agreement with the finite element results. A method of determining the initial shear modulus and the insitu horizontal soil stress is presented. This method gives good agreement with the finite element results. When applied to actual pressuremeter test data, the shear moduli determined by this method were in better agreement with the rebound moduli than with the moduli determined from the initial portion of the pressure-expansion curve.
Hydrodynamical Simulations of the Barred Spiral Galaxy NGC 6782
Creators: name: Lin, Lien-Hsuan
name: Yuan, Chi
name: Buta, R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: NGC 6782 is an early-type barred spiral galaxy exhibiting a rich and complex morphology with multiple ring patterns. To provide a physical understanding of its structure and kinematical properties, two-dimensional hydrodynamical simulations have been carried out. Numerical calculations reveal that the striking features in NGC 6782 can be reproduced provided that the gas flow is governed by the gravitational potential associated with a slowly rotating strong bar. In particular, the response of the gaseous disk to the bar potential leads to the excitation of spiral density waves at the inner Lindblad resonance giving rise to the appearance of a nearly circular nuclear ring with a pair of dust lanes. For a sufficiently strong bar potential, the inner 4:1 spiral density waves are also excited. The interaction of the higher harmonic waves with the waves excited at the inner Lindblad resonance and confined by the outer Lindblad resonance results in the observed diamond-shaped (or pointy oval) inner ring structure. The overall gas morphology and kinematical features are both well reproduced by the model provided that the pattern speed of the bar is $\sim 25$ km s$^{-1}$ kpc$^{-1}$.
description: 35 pages, 14 figures
Doctoral thesis recital (trombone)
Creators: name: Casey-Clyde, Lauren
Publisher: name: The University of Texas at Austin
Year: 2023
Subjects: Trombone music
Chamber music
Trombone and piano music
Trombone choir music
Fantasias
Fantasies
Concertos
Wind quartets
Quartets
Trombone quartets
Brass quartets

description: Fantasie / Yvonne Desportes -- Concerto for trombone / Ida Gotkovsky -- After midnight / Shao Suan -- Balkanika / Daniela Candillari -- First trombone quartet / Saskia Apon.
Experimental investigation of the base storey design of base isolated steel buildings
Creators: name: Barwig, Bill Barron
Publisher: name: University of British Columbia
Year: 2010

description: Recent research indicates that base isolation of buildings eliminates or reduces seismic loading to an acceptable level. This paper presents the results of the experimental investigations of various base storey schemes for steel buildings with base isolation. A steel frame was designed and built for the shaking table tests, which were conducted in the Earthquake Simulator Laboratory at the University of British Columbia. The dynamic response of the frame was recorded for each base storey design, fixed base or base isolated. The base isolation system consisted of steel roller bearings with parallel, ductile steel energy absorbers(yield rings). These absorbers limit excessive displacement and absorb energy during severe earthquake excitation. They also provide restraint against wind loads and mild earthquake excitation. The new design of the base storey is aimed at eliminating the blind base storey or double foundation. The experimental tests show ways of better design methods and analytical studies are following to optimize them. Uncoupling of buildings from earthquake ground motion is relatively simple to achieve. However a base isolation system requires a certain restraint against minor horizontal loads such as wind loads which can be accomplished by energy absorbers. A new type of solid state energy absorber was used in the described tests. The newly proposed base storey is substantially different from conventional solutions used by other base isolation systems and results in a less expensive but safe design.
Online Motion Planning with Soft Metric Interval Temporal Logic in Unknown Dynamic Environment
Creators: name: Li, Zhiliang
name: Cai, Mingyu
name: Xiao, Shaoping
name: Kan, Zhen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: Formal Languages and Automata Theory (cs.FL)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Motion planning of an autonomous system with high-level specifications has wide applications. However, research of formal languages involving timed temporal logic is still under investigation. Furthermore, many existing results rely on a key assumption that user-specified tasks are feasible in the given environment. Challenges arise when the operating environment is dynamic and unknown since the environment can be found prohibitive, leading to potentially conflicting tasks where pre-specified timed missions cannot be fully satisfied. Such issues become even more challenging when considering time-bound requirements. To address these challenges, this work proposes a control framework that considers hard constraints to enforce safety requirements and soft constraints to enable task relaxation. The metric interval temporal logic (MITL) specifications are employed to deal with time-bound constraints. By constructing a relaxed timed product automaton, an online motion planning strategy is synthesized with a receding horizon controller to generate policies, achieving multiple objectives in decreasing order of priority 1) formally guarantee the satisfaction of hard safety constraints; 2) mostly fulfill soft timed tasks; and 3) collect time-varying rewards as much as possible. Another novelty of the relaxed structure is to consider violations of both time and tasks for infeasible cases. Simulation results are provided to validate the proposed approach.
description: under review
The cycle of interstellar dust in galaxies of different morphological types
Creators: name: Calura, Francesco
name: Pipino, Antonio
name: Matteucci, Francesca
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: By means of chemical evolution models for galaxies of different morphological type, we have performed a detailed study of the evolution of the cosmic dust properties in different environments: the solar neighbourhood, elliptical galaxies and dwarf irregular galaxies. Starting from the same formalism as developed by Dwek (1998), We have taken into account dust production from low and intermediate mass stars, supernovae II and Ia as well as dust destruction and dust accretion processes in a detailed model of chemical evolution for the solar vicinity. Then, by means of the same dust prescriptions but adopting different galactic models (different star formation histories and presence of galactic winds), we have extended our study to ellipticals and dwarf irregular galaxies. We have investigated how the assumption of different star formation histories affects the dust production rates, the dust depletion, the dust accretion and destruction rates. We have shown how the inclusion of the dust treatment is helpful in solving the so-called Fe discrepancy, observed in the hot gaseous halos of local ellipticals, and in reproducing the chemical abundances observed in the Lyman Break Galaxies. Finally, our new models can be very useful in future detailed spectro-photometric studies of galaxies.
description: 20 pages, A&A, accepted. Minor changes after referee report
User Interview with Former STMC with N90, Current Program Manager at Port Authority of NY and NJ
Creators: name: Shen, Kate
name: Carvette, Anthony
name: Abdulhak, Sinan
Publisher: name: My University
Year: 2023
Subjects: subject: Information Science
subject: Social Sciences

description: Contains interview notes from User Interview with a former STMC with N90 regarding the pain points of NTML and collaboration within the FAA for the aMaize FMDS Project.
Surface exceptional points in a topological Kondo insulator
Creators: name: Peters, Robert
name: Kimura, Kazuhiro
name: Michishita, Yoshihiro
name: Yoshida, Tsuneya
name: Kawakami, Norio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Correlated materials have appeared as an arena to study non-Hermitian effects as typically exemplified by the emergence of exceptional points. We show here that topological Kondo insulators are an ideal platform for studying these phenomena due to strong correlations and surface states exhibiting a nontrivial spin texture. Using numerical simulations, we demonstrate the emergence of exceptional points in the single-particle Green's function on the surface of the material while the bulk is still insulating. We reveal how quasiparticle states with long lifetimes are created on the surface by non-Hermitian effects while the Dirac cones are smeared, which explains the surface Kondo breakdown at which heavy Dirac cones disappear from the single-particle spectrum and are replaced by light states. We further show how the non-Hermiticty changes the spin texture inherent in the surface states, which might help identify exceptional points experimentally. Besides confirming the existence of non-Hermitian effects on the surface of a topological Kondo insulator, this paper demonstrates how the eigenstates and eigenvalues of the effective non-Hermitian matrix describing the single-particle Green's function help understand the properties of correlated materials.
description: 11 pages
Soliton percolation in random optical lattices
Creators: name: Kartashov, Yaroslav V.
name: Vysloukh, Victor A.
name: Torner, Lluis
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optics (physics.optics)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We introduce soliton percolation phenomena in the nonlinear transport of light packets in suitable optical lattices with random properties. Specifically, we address lattices with a gradient of the refractive index in the transverse plane, featuring stochastic phase or amplitude fluctuations, and we discover the existence of a disorder-induced transition between soliton-insu-lator and soliton-conductor regimes. The soliton current is found to reach its maximal value at intermediate disorder levels and to drastically decrease in both, almost regular and strongly disordered lattices.
description: 9 pages, 4 figures, to appear in Optics Express
title: Метаданные электронного сообщения как электронное доказательство в уголовном процессе
title: Metadata of Electronic Messages as Electronic Evidence in a Criminal Process
Creators: name: Усольцев, Юрий Михайлович
name: Усольцева, Наталья Андреевна
Publisher: name: Издательский центр СурГУ
Year: 2021

description: Дана характеристика служебной информации электронных сообщений как источника доказательств в уголовном процессе, представлен анализ направлений развития понятия доказательства, вопросов изъятия электронной информации, электронных сообщений в рамках существующих процессуальных действий, а также использования метаданных в процессе доказывания по уголовным делам.
description: The article provides a characteristic of the electronic information of electronic messages as a source of evidence in criminal proceedings, analyzes the development trends of the concept of evidence in criminal proceedings, examines the issues of withdrawing electronic information from electronic messages within the framework of existing procedural actions, studies the possibility of using metadata in the process of proving in criminal cases.
User Interview with Assistant Director, Civic Engagement and Lecturer III in Information at the University of Michigan School of Information
Creators: name: Shen, Kate
name: Carvette, Anthony
name: Abdulhak, Sinan
Publisher: name: My University
Year: 2023
Subjects: subject: Information Science
subject: Social Sciences

description: Contains notes from Uesr Interview with a University of Michigan Lecturer providing insight towards an iterative design approach, as well as feedback on a user survey.
The effects of Gribov copies in 2D gauge theories
Creators: name: Dudal, D.
name: Sorella, S. P.
name: Vandersickel, N.
name: Verschelde, H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In previous works, we have shown that the Gribov-Zwanziger action, which implements the restriction of the domain of integration in the path integral to the Gribov region, generates extra dynamical effects which influence the infrared behaviour of the gluon and ghost propagator in SU(N) Yang-Mills gauge theories. The latter are in good agreement with the most recent lattice data obtained at large volumes, both in 4D and in 3D. More precisely, the gluon propagator is suppressed and does not vanish at zero momentum, while the ghost propagator keeps a 1/p^2 behaviour for p^2\approx0. Instead, in 2D, the lattice data revealed a vanishing zero momentum gluon propagator and an infrared enhanced ghost, in support of the usual Gribov-Zwanziger scenario. We will now show that the 2D version of the Gribov-Zwanziger action still gives results in qualitative agreement with these lattice data, as the peculiar infrared nature of 2D gauge theories precludes the analogue of the dynamical effect otherwise present in 4D and 3D. Simultaneously, we also observe that the Gribov-Zwanziger restriction serves as an infrared regulating mechanism.
description: 10 pages, 1 .eps figure
User Interview with General Manager and Sr. Manager of Delta Air Lines Air Traffic Management
Creators: name: Shen, Kate
name: Carvette, Anthony
name: Abdulhak, Sinan
Publisher: name: My University
Year: 2023
Subjects: subject: Information Science
subject: Social Sciences

description: Contains interview notes from User Interview with Delta Air Lines employees regarding feedback on survey questions and identifying main stakeholders for the aMaize FMDS Project.
Pollanisus subdolosa subsp. subdolosa
Creators: name: Mollet, Bernard
name: Tarmann, Gerhard M.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Zygaenidae
Pollanisus
Pollanisus subdolosa
Pollanisus subdolosa subdolosa

description: Pollanisus subdolosa subdolosa — P. subdolosa clara
Published data (Tarmann 2004) and an additional new locality.
Material examined. Pollanisus subdolosa clara (Table 9). Paratype, 1 ♁ (Figs 128, 130), New South Wales. Minyon Falls, 6 km N of Rosebank, 28° 22’ 12”S, 153° 13’ 48”E, 19.XI.1976, I. F. B. Common & E. D. Edwards leg. (ANIC). Queensland. 1 ♁ (1436) (Figs 129, 131) 4 ♁, Burrum Coast N. P., Point Campground, 25°03′S, 152°31′E, 23/ 24. IV.2008, S. & B. Mollet leg. (BMC).
Discussion and diagnosis. Differences in the habitus of the two subspecies are: hindwing opaque in P. s. subdolosa and translucent in P. s. clara but their head features are similar (Tarmann 2004). Unfortunately, no P. s. subdolosa was examined in ANIC for head ratio comparison with P. s. clara. Until there is more investigation of accurate measurement of head ratios in P. s. subdolosa, the status of the two subspecies is maintained. P. s. subdolosa is similar in habitus to P. edwardsi and P. species 2, but the frons is larger and the eyes smaller in the latter. P. s. clara is very similar in habitus to P. contrastus, P. yugambeh sp. n. and P. trimacula (without spots), but in this last their frons is larger and the eyes smaller. Without careful examination of the head ratios, many male specimens, examined in several museums, cannot be clearly assigned (Tarmann 2004).
Phenology and bionomics. Males of P. s. subdolosa and P. s. clara were mainly collected at night (Tarmann 2004). A large series of males of P. s. clara were collected at U. V. light early in the morning (Tarmann 2004). This behavior, linked to an intermediate value of the head ratio data between the diurnal and the nocturnal species (Tables 17, 19), suggests crepuscular activity. Hibbertia scandens (Dilleniaceae) is supposed to be the larval host-plant of P. s. clara (Tarmann 2004). P. s. subdolosa is localized in Victoria while P. s. clara occurs in New South Wales and south of Queensland. The host-plant of P. s. subdolosa is unknown but should be different than H. scandens, which is not known in the countryside in Victoria, (ALA).
description: Published as part of Mollet, Bernard & Tarmann, Gerhard M., 2023, Revision of the genus Pollanisus Walker, 1854 (Lepidoptera: Zygaenidae: Procridinae), pp. 1-72 in Zootaxa 5281 (1) on pages 40-41, DOI: 10.11646/zootaxa.5281.1.1, http://zenodo.org/record/7912043
Lorentzian quantum cosmology goes simplicial
Creators: name: Dittrich, Bianca
name: Gielen, Steffen
name: Schander, Susanne
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We employ the methods of discrete (Lorentzian) Regge calculus for analysing Lorentzian quantum cosmology models with a special focus on discrete analogues of the no-boundary proposal for the early universe. We use a simple 4-polytope, a subdivided 4-polytope and shells of discrete 3-spheres as triangulations to model a closed universe with cosmological constant, and examine the semiclassical path integral for these different choices. We find that the shells give good agreement with continuum results for small values of the scale factor and in particular for finer discretisations of the boundary 3-sphere, while the simple and subdivided 4-polytopes can only be compared with the continuum in certain regimes, and in particular are not able to capture a transition from Euclidean geometry with small scale factor to a large Lorentzian one. Finally, we consider a closed universe filled with dust particles and discretised by shells of 3-spheres. This model can approximate the continuum case quite well. Our results embed the no-boundary proposal in a discrete setting where it is possibly more naturally defined, and prepare for its discussion within the realm of spin foams.
description: 47 pages, 19 figures; v4: fixed a few typos, added some references to figures
User Interview with General Manager of Air Traffic Management at Delta Air Lines and Former OCC Digital Technology Manager at Delta Air Lines
Creators: name: Shen, Kate
name: Carvette, Anthony
name: Abdulhak, Sinan
Publisher: name: My University
Year: 2023
Subjects: subject: Information Science
subject: Social Sciences

description: Contains interview notes from User Interview with Delta Air Lines employees regarding commonly-used TFMS applications, opinions on a Collaboration Feature, and suggestions for how to improve the NTMS workflow for the aMaize FMDS project.