cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Artificial neural networks acceleration on field-programmable gate arrays considering model redundancy
Creators: name: Su, Jiang
Publisher: name: Imperial College London
Year: 2018

description: Artificial Neural Networks (ANNs) have dramatically developed over the last ten years, and have been successfully applied in many important areas. A natural follow-up topic is to deploy ANNs to a wider range of hardware platforms. However, modern ANN models may aim for millisecond- or even nanosecond-level latency for each input processing while it is common for them to require million-level operations and gigabyte-scale data access for computing each input. This intrinsic high computational complexity introduces hardware challenges to the system implementation. Meanwhile, the integration of computing resources on hardware platforms is hampered by the slowing down of Moore’s Law. Therefore, it is important to study new design methods for ANN hardware systems that produce high model accuracy with low resource usage. Field-Programmable Gate Array (FPGA) is a natural fit for this topic due to its reconfigurability and flexibility. These features of FPGA allow us to implement customised data paths and data representations on hardware, which makes it the primary platform in this research. The main topics discussed in this thesis include neural network redundancy and its impact on hardware systems. The main goal is to reduce hardware complexity by reducing neural network redundancy and maintaining accuracy at the same time. To achieve this, redundancy is firstly categorised into two types: model- and data-level. Then, each type is studied in isolation before both are combined in a single system design. First, to study model-level redundancy, an algorithm called dropout is implemented as a way to reduce model-level redundancy during training and used here to reduce hardware cost. Our proposed system achieves a 50% reduction in DSP usage and 33% to 47% fewer on-chip memory usage compared to conventional implementations. Second, in terms of data-level redundancy, we aim to study how data precision affects hardware cost and system throughput. Our experiments show that reduced-precision data present negligible or even no accuracy loss to full-precision data on the tested benchmarks. In particular, the 4-bit fixed point presents a good trade-off between model accuracy and hardware cost compared to other tested data representations. Third, we studied the interactive effect of reducing both model- and data-level redundancy and proposed a FPGA accelerator design for Redundancy-Reduced (RR-) MobileNet [Hea17]. Our proposed RR-MobileNet system achieves a state-of-the-art latency, 7.85 ms, for single image processing in ImageNet inference. Finally, a design guideline is proposed as a step-by-step guidance for redundancy-reduced neural network system design.
Who is a robot? A fundamental model of artificial identity
Creators: name: Miranda, Lux
Publisher: name: Zenodo
Year: 2024
Subjects: artificial identity
robot identity
philosophy of HRI
five aggregates
human-robot interaction

description: Though some matters of consensus have begun to crystallize, scholars in human-robot interaction have thus far reasoned about artificial identity under many different definitions. Many of these seemingly disparate perspectives may, however, be unified into one coherent model through a synthesis of contemporary scientific and Buddhist philosophy of identity. Under this model, artificial and human identity are modeled equivalently under an assumption that there is no "immutable essence" which constitutes an agent's identity, but rather that identity may be defined as the sum of overlapping aggregates subject to change through time. The model reckons with the idea that much of what is conceived of as identity may be arbitrarily ascribed, artificial boundaries, but that these boundaries often constitute substantial social and psychological realities. This thinking is congruent with contemporary philosophical perspectives across disciplines from biology to cognitive science. The model may serve as a useful tool for roboticists to reason about identity in complex, dynamic situations, and provide a firm foundation for work which utilizes artificial identity. The model may even offer one or two possible answers to the question: Who is a robot?
Permuton limit of a generalization of the Mallows and $k$-card-minimum models
Creators: name: Jasińska, Joanna
name: Ráth, Balázs
Publisher: name: arXiv
Year: 2024
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G42, 60J10, 60G42

description: We introduce and study a new random permutation model that generalizes the $k$-card minimum model defined by Travers and the Mallows model. We calculate the permuton limit of such a sequence of random permutations. As a corollary, we deduce the law of large numbers for pattern densities. Moreover, we prove a universality result about the band structure of the limiting permuton, confirming a conjecture of Travers about the $k$-card minimum model. More specifically, we show that if a certain model parameter goes to infinity then the appropriately scaled restriction of the permuton measure to a line that intersects the diagonal perpendicularly converges weakly to the logistic distribution.
description: 13 pages, 1 figure, we corrected some errors and typos pointed out by the referee
Efficient Online Reinforcement Learning Fine-Tuning Need Not Retain Offline Data
Creators: name: Zhou, Zhiyuan
name: Peng, Andy
name: Li, Qiyang
name: Levine, Sergey
name: Kumar, Aviral
Publisher: name: arXiv
Year: 2024
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The modern paradigm in machine learning involves pre-training on diverse data, followed by task-specific fine-tuning. In reinforcement learning (RL), this translates to learning via offline RL on a diverse historical dataset, followed by rapid online RL fine-tuning using interaction data. Most RL fine-tuning methods require continued training on offline data for stability and performance. However, this is undesirable because training on diverse offline data is slow and expensive for large datasets, and in principle, also limit the performance improvement possible because of constraints or pessimism on offline data. In this paper, we show that retaining offline data is unnecessary as long as we use a properly-designed online RL approach for fine-tuning offline RL initializations. To build this approach, we start by analyzing the role of retaining offline data in online fine-tuning. We find that continued training on offline data is mostly useful for preventing a sudden divergence in the value function at the onset of fine-tuning, caused by a distribution mismatch between the offline data and online rollouts. This divergence typically results in unlearning and forgetting the benefits of offline pre-training. Our approach, Warm-start RL (WSRL), mitigates the catastrophic forgetting of pre-trained initializations using a very simple idea. WSRL employs a warmup phase that seeds the online RL run with a very small number of rollouts from the pre-trained policy to do fast online RL. The data collected during warmup helps ``recalibrate'' the offline Q-function to the online distribution, allowing us to completely discard offline data without destabilizing the online RL fine-tuning. We show that WSRL is able to fine-tune without retaining any offline data, and is able to learn faster and attains higher performance than existing algorithms irrespective of whether they retain offline data or not.
Colymbus auritus Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Podicipediformes
Podicipedidae
Colymbus
Colymbus auritus

description: Colymbus auritus [spec. nov.]
C. pedibus lobatis, capite nigro, auribus cristato-ferru- gineis. Fn. Svec. 123.
Colymbus s. Podiceps minor. Aldr. orn. l. 19. c. 52. Will. orn. 258. t. 61. Sloan. jam. 2. p. 322. t. 271. f. 1. Raj. av. 125. Mars. danub. 82. t. 39. Alb. av. 2. p. 70. t. 76. Edw. av. 145. t. 145. & 96. l. 96.
Colymbi nequeunt incedere, at citissime super aquam currunt, & egregie urinantur.
Habitat in summis Europae & Americae lacubus.
Nidum natantem conficit.
description: Published as part of Linnaeus, Carolus, 1758, Systema Naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, Stockholm :Laurentius Salvius on pages 135-136, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
The epidemiology of soil-transmitted helminths in Bungoma, Kenya, with an emphasis on immuno-epidemiology in a community receiving anthelmintic treatment
Creators: name: Goncalves Costa De Oliveira, Rita
Publisher: name: Imperial College London
Year: 2017

description: Soil-transmitted helminth (STH) infections are endemic in Kenya, where preventive anthelminthic treatment has been provided to school-age children annually, through a school-based deworming (SBD) programme, since 2012. The aim of this thesis was to investigate the epidemiology and immuno-epidemiology of STH infections in a whole community with an ongoing SBD programme to assess the impact of control on the prevalence and intensity of infection, plus the distribution of remaining infection in treated communities. This study was conducted in four rural villages near Bungoma, western Kenya. Samples were collected from 2,273 individuals between 2 and 93 years of age during two cross-sectional surveys in Mar-Apr and Aug-Sep 2014. Stool samples were analysed using Kato-Katz, blood samples were analysed using enzyme-linked immunosorbent assays (ELISA). 400mg albendazole was administered between the cross-sectional surveys to simulate a round of mass drug administration (MDA). At study baseline, Ascaris lumbricoides and Necator americanus infections had 9.8% and 6.7% prevalence, which were reduced to 1.8% and 1.4%, respectively, three months post-MDA. STH infection was highly aggregated in the population, and clustering at household and village levels was observed for A. lumbricoides infection. Young age and poor sanitation were risk factors for A. lumbricoides infection, while old age, farming, and poverty-associated factors increased the risk for N. americanus infection. The MDA had 93.9% coverage, 98.9% and 91.5% cure rates for A. lumbricoides and N. americanus, respectively, and was particularly effective in reducing hookworm infection in the older age groups of the population. A positive correlation was observed between hookworm age-prevalence and Necator-specific IgG4 antibody prevalence. No significant changes in seroprevalence were found post-treatment. There was evidence of cross-reactivity between antigens. This study highlights the need for improved control strategies and diagnostic tools for STH infections, particularly as SBD programmes bring us closer to the “endgame” of transmission elimination.
Fabrication of electronically switchable and tunable bulk acoustic wave resonators with graphene electrodes
Creators: name: Liu, Wei
Publisher: name: Imperial College London
Year: 2017

description: This work is devoted to the fabrication of multilayer hetero-structure for switchable and tunable bulk acoustic wave resonators. This structure uses a ferroelectric material in the paraelectric phase as the resonator layer. The switchable and tunable abilities are achieved by varying the external DC electric field applied. The intermediate electrode chosen is single layer graphene with an ultra-thin Ti/Au capping layer. The device uses all metal Bragg reflectors to confine the acoustic wave within the resonator layer. The device structure is silicon with 90nm oxide layer/Bragg reflectors/graphene/metal/BST/graphene/top electrode. Chemical Vapour Deposition (CVD) has been used to grow the graphene, PLD has been used to deposit the BST layer, a Mantis sputtering system has been used to grow the Bragg reflector layer and the electrode metal layers, and photolithography, ion milling and reactive ion etching have been used to pattern the device. It has been found that for the graphene/metal bilayer, graphene with Ti (5nm) + Au (5nm), is the most suitable combination for this project. The measured resistance is 6.5Ω, and the graphene underneath is preserved after the sputtering of Ti. High temperature annealing of graphene is carried out to examine the mechanisms that cause the elimination of graphene during the growth of TiN. It is suspected that the difference in thermal expansion coefficient between the graphene and the silicon substrate creates cracks on the graphene layer, and the subsequent sputtering process destroys the graphene. For the growth of Bragg reflectors, Ti/Ru has been chosen for the growth of switchable and tunable TFBARs due to durability for the high temperature growth process. For the BST based full device, resonance has been observed under an applied external ACbias at various frequencies, but the crystallinity of the BST layer can be further optimised to achieve higher quality factor.
STUDY TECHNOLOGICAL PROPERTIES OF DRY  EXTRACT "ANTIOXIM"
Creators: name: Ismailova, F.B.
name: Yunusova, Х.М.
Publisher: name: Zenodo
Year: 2024

description: The study of domestic medicinal plants as a source of biologically active substances makes it possible to obtain new medicinal preparations and introduce them into medical practice. It is necessary that all medicinal plants have a complex effect, are easy to master, do not have contraindications and side effects. According to the scientific literature, the proportion of herbal preparations is about 90%, their high physiological activity depends on the harmonious combination and interaction of biologically active substances contained in the preparations used. Therefore, plants remain an indispensable source of obtaining drugs of various directions.
Hydrodynamic Simulations of Counterrotating Accretion Disks
Creators: name: Kuznetsov, O. A.
name: Lovelace, R. V. E.
name: Romanova, M. M.
name: Chechetkin, V. M.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Hydrodynamic simulations have been used to study accretion disks consisting of counterrotating components with an intervening shear layer(s). Configurations of this type can arise from the accretion of newly supplied counterrotating matter onto an existing corotating disk. The grid-dependent numerical viscosity of our hydro code is used to simulate the influence of a turbulent viscosity of the disk. Firstly, we consider the case where the gas well above the disk midplane rotates with angular rate +Ω(r) and that well below has the same properties but rotates with rate -Ω(r). We find that there is angular momentum annihilation in a narrow equatorial boundary layer in which matter accretes supersonically with a velocity which approaches the free-fall velocity and the average accretion speed of the disk can be enormously larger than that for a conventional α-disk rotating in one direction. Secondly, we consider the case of a corotating accretion disk for rr_t. In this case we observed, that matter from the annihilation layer lost its stability and propagated inward pushing matter of inner regions of the disk to accrete. Thirdly, we investigated the case where counterrotating matter inflowing from large radial distances encounters an existing corotating disk. Friction between the inflowing matter and the existing disk is found to lead to fast boundary layer accretion along the disk surfaces and to enhanced accretion in the main disk. These models are pertinent to the formation of counterrotating disks in galaxies and possibly in Active Galactic Nuclei and in X-ray pulsars in binary systems.
description: LaTeX, 18 pages, to appear in ApJ
Non-cropping period accounting for over a half of annual nitric oxide releases from cultivated calcareous-soil alpine ecosystems with marginally low emission factors
Creators: name: LIN, Fei
name: LIU, Chun-Yan
name: HU, Xiao-Xia
name: FU, Yong-Feng
name: Xunhua ZHENG
name: ZHANG, Wei
name: WANG, Rui
name: CAO, Guang-Min
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Plant Biology

description: Nitric oxide (NO) emissions from alpine ecosystems conventionally being long-term cultivated with feed crops are not well quantified. The authors attempted to address this knowledge gap by performing a year-round experimental campaign in the northeastern Tibetan Plateau. Fertilized (F) and unfertilized (UF) treatments were established within a flat calcareous-soil site for the long-term cultivation of feed oats. NO fluxes and five soil variables were simultaneously measured. A single plow tillage accounted for approximately 54%–73% of the NO releases during the cropping period (CP); and the non-cropping period (NCP) contributed to 51%–58% of the annual emissions. The direct NO emissions factor (EFd) was 0.021% ± 0.021%. Significantly lower Q10 values (p < 0.01) occurred in the F treatment during the CP (approximately 3.6) compared to those during the other period or in the other treatment (approximately 4.9−5.1), indicating a fertilizer-induced reduction in the temperature sensitivity. The selected soil variables jointly accounted for up to 72% (p < 0.01) of the variance for all the fluxes across both treatments. This finding suggests that temporally and/or spatially distributed fluxes from alpine calcareous-soil ecosystems for feed crop production may be easily predicted if data on these soil variables are available. Further studies are needed to test the hypothesis that the EFd is larger in alpine feed-oat fields than those in this study if the soil moisture content is higher during the period following the basal application of ammonium- or urea-based fertilizer.
MedGAN: Medical Image Translation using GANs
Creators: name: Armanious, Karim
name: Jiang, Chenming
name: Fischer, Marc
name: Küstner, Thomas
name: Nikolaou, Konstantin
name: Gatidis, Sergios
name: Yang, Bin
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Image-to-image translation is considered a new frontier in the field of medical image analysis, with numerous potential applications. However, a large portion of recent approaches offers individualized solutions based on specialized task-specific architectures or require refinement through non-end-to-end training. In this paper, we propose a new framework, named MedGAN, for medical image-to-image translation which operates on the image level in an end-to-end manner. MedGAN builds upon recent advances in the field of generative adversarial networks (GANs) by merging the adversarial framework with a new combination of non-adversarial losses. We utilize a discriminator network as a trainable feature extractor which penalizes the discrepancy between the translated medical images and the desired modalities. Moreover, style-transfer losses are utilized to match the textures and fine-structures of the desired target images to the translated images. Additionally, we present a new generator architecture, titled CasNet, which enhances the sharpness of the translated medical outputs through progressive refinement via encoder-decoder pairs. Without any application-specific modifications, we apply MedGAN on three different tasks: PET-CT translation, correction of MR motion artefacts and PET image denoising. Perceptual analysis by radiologists and quantitative evaluations illustrate that the MedGAN outperforms other existing translation approaches.
description: 16 pages, 8 figures
Computational studies of oxygen transport in arterio-venous fistulae
Creators: name: Iori, Francesco
Publisher: name: Imperial College London
Year: 2018

description: Arterio-venous-fistulae (AVF) are surgically-formed connections between an artery and a vein and are regarded as the “gold standard” method of vascular access, for haemodialysis. Nonetheless, up to 60% fail within three months of creation. Their principal failure mechanism is intimal hyperplasia (IH), an adverse inflammatory process causing AVF to block and fail. Evidence suggests that IH is a multifactorial process, attributable to an altered vascular environment, including increased metabolic stress, flow disturbances, mechanical stress, and wall hypoxia (low oxygen levels). The present work focuses on studying wall hypoxia in idealised AVF. Vascular walls are oxygenated by transport from both luminal oxygenated blood and adventitial vasa vasorum (VV), the microvascular network supplying large vessels. Luminal oxygen supply is affected by the altered AVF haemodynamics, while altered wall-mechanics can prevent adequate VV perfusion. The aim of this thesis is to ascertain what is most important in determining wall-oxygen levels: (i) modified luminal flow field; (ii) mechanically-modified VV perfusion. Hence, a model of oxygen transport, capable of accounting for VV damage/hypoperfusion, was developed. Geometries and VV perfusion fields obtained from mechanical simulations were used to provide the oxygen transport model with a VV oxygen source. Results suggest that for a given set of wall parameters, the local wall-oxygen levels are governed by the flow field, while spatial distributions of mechanically-modified VV perfusion are shown to have negligible effects on the local wall-oxygen levels. However, overall wall-oxygen levels are highly sensitive to changes in bulk wall parameters, particularly oxygen consumption rates. Finally, these results were used to develop a simplified oxygen transport model, that is combined with a mesh-adaptive-direct-search approach to identify an optimal AVF configuration with reduced hypoxia levels. The configuration features a non-planar anastomosis and a helical shaped vein.
Understanding the genetic basis of rare inherited bleeding and platelet disorders: the utility of next-generation sequencing
Creators: name: Lentaigne, Claire
Publisher: name: Imperial College London
Year: 2018

description: Inherited bleeding and platelet disorders (BPD) are rare, heterogeneous and rarely receive a specific genetic diagnosis. The BRIDGE-Bleeding and platelet disorders consortium was set up to address this using high-throughput sequencing (HTS). More than one thousand probands with inherited BPD of unknown aetiology were recruited to an international consortium study with two over-arching aims: to identify novel genetic loci involved in BPD and provide a better diagnosis for patients. Through applying comprehensive, standardised phenotyping to this large dataset combined with novel analytical methods, several novel candidate genes for BPD have been identified. HTS has also identified variants in known BPD genes, many of them pathogenic, thus providing a diagnosis to many patients with BPD. In this thesis I present the study design and methodology for recruitment and data collection for the BRIDGE-BPD study. I describe the optimisation and application of the Human Phenotype Ontology to phenotype rare BPD and show how this has facilitated gene discovery and improvements in patient diagnosis. In chapters 4 and 5 I show how HTS has identified many variants in known BPD genes and illustrate the challenges faced and methods required for the interpretation of these variants. Many novel candidate BPD genes have also been identified and in chapters 6 and 7 some examples are highlighted with methods for their characterisation. Overall, this thesis demonstrates the utility of HTS in the diagnosis of rare BPD and many of the challenges faced in the interpretation of data from large whole genome sequencing projects and application of this technology to rare diseases.
Colymbus podiceps Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Podicipediformes
Podicipedidae
Colymbus
Colymbus podiceps

description: Colymbus podiceps [spec. nov.]
C. pedibus lobatis, corpore fusco, rostro fascia sesqui altera.
Podiceps minor, rostro vario. Catesb. car. 1. p. 91. t. 91.
Habitat in America septentrionali.
description: Published as part of Linnaeus, Carolus, 1758, Systema Naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, Stockholm :Laurentius Salvius on page 136, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
Discovery of a Nearby Low-Surface-Brightness Spiral Galaxy
Creators: name: Burton, W. B.
name: Braun, R.
name: Walterbos, R. A. M.
name: Hoopes, C. G.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: During the course of a search for compact, isolated gas clouds moving with anomalous velocities in or near our own Galaxy (Braun and Burton 1998 A&A, in press), we have discovered, in the data of the Leiden/Dwingeloo survey (Hartmann and Burton 1997, Atlas of Galactic Neutral Hydrogen, CUP) of Galactic hydrogen, the HI signature of a large galaxy, moving at a recession velocity of 282 km/s, with respect to our Galaxy. Deep multicolor and spectroscopic optical observations show the presence of star formation in scattered HII regions; radio HI synthesis interferometry confirms that the galaxy is rich in HI and has the rotation signature of a spiral galaxy; a submillimeter observation failed to detect the CO molecule. The radio and optical evidence combined suggest its classification as a low-surface-brightness spiral galaxy. It is located in close spatial and kinematic proximity to the galaxy NGC 6946. The newly-discovered galaxy, which we call Cepheus 1, is at a distance of about 6 Mpc. It is probably to be numbered amongst the nearest few LSB spirals.
description: 13 page LaTeX, requires aastex, 4 GIF figures. Accepted for publication in the AJ, January 1999
Topology-driven deconfined quantum criticality in magnetic bilayers
Creators: name: Lundemo, Sondre Duna
name: Nogueira, Flavio S.
name: Sudbø, Asle
Publisher: name: arXiv
Year: 2024
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Two-dimensional quantum antiferromagnets are believed to host phases of matter whose excitations are more fundamental than those of the ordered phases. When combining two such spin systems in a bilayer, strong interaction between the emergent excitations can produce phases not realized in either of its subsystems. We show that the critical fluctuations of a two-dimensional spin liquid state can induce a deconfined quantum critical point in a proximate antiferromagnet. The most relevant coupling between the associated effective field theories is given by a mixed Chern-Simons term of the emergent gauge fields in each layer. This describes a topological current-current interaction. In contrast to the local spin-spin interaction, it strongly modifies the renormalization group flow of the theory describing the Néel-valence-bond-solid transition of the antiferromagnet. In particular, the protected coupling constant associated with it implies non-trivial quantum critical scaling characterized by a non-universal power-law divergence of the correlation length in the critical domain and Berezinskii-Kosterlitz-Thouless divergence approaching it.
description: 15 pages, 5 figures, Published in Physical review B
Caracterización de la dinámica geomorfológica y sedimentológica de la laguna de Culebrillas y su relación con los patrones de asentamientos prehispánicos locales
Creators: name: Sanchez Cortez, Jose Luis
name: Macas-Espinosa, Vinicio
name: Vélez-Macías, Kathleen
name: Naranjo-Freire, Clelia
Publisher: name: Zenodo
Year: 2024

description: La laguna de Culebrillas, ubicada en el centro sur del Ecuador, representa una unidad hidrográfica de origen glacio-lacustre, con un importante acervo cultural evidente en sus mitos, tradiciones y leyendas, además de remanentes conservados del Qhapaq Ñan, el tambo Paredones y demás hallazgos arqueológicos. El misticismo y la oralidad han generado algunas nociones inexactas sobre la génesis de algunos elementos morfológicos presentes en la laguna, que se han transmitido por generaciones. El presente trabajo definió, desde una aproximación de las ciencias de la Tierra, la génesis del relieve actual, aplicando herramientas telemáticas, de teledetección y sedimentológicas, creando modelos teóricos de los episodios históricos o etapas evolutivas del paisaje, para así establecer una relación con los patrones de asentamiento utilizados por los grupos prehispánicos que circundaron el área de estudio. Se establece que las estructuras desarrolladas en el sector fueron realizadas siguiendo un patrón adaptativo de su entorno, sin que las mismas hayan ocasionado disturbios importantes en el ambiente próximo.
Dust Emission from IRC+10216
Creators: name: Ivezic, Zeljko
name: Elitzur, Moshe
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Infrared emission from the dust shell around IRC+10216 is analysed in detail, employing a self-consistent model for radiatively driven winds around late-type stars that couples the equations of motion and radiative transfer in the dust. The resulting model provides agreement with the wealth of available data, including the spectral energy distribution in the range 0.5--1000 \mic, and visibility and array observations. Previous conclusions about two dust shells, derived from modelling the data with a few single-temperature components of different radii, are not supported by our results. The extended, continuous temperature and density distributions derived from our model obviate the need for such discrete shells. The IR properties vary with the stellar phase, reflecting changes in both the dust condensation radius $r_1$ and the overall optical depth $τ$ -- as the luminosity increases from minimum to maximum, $r_1$ increases while $τ$ decreases. We find that the angular size of the dust condensation zone varies from 0.3 arcsec at minimum light to 0.5 arcsec at maximum. The shortage of flux at short wavelengths encountered in previous studies is resolved by employing a grain size distribution that includes grains larger than \about\ 0.1 \mic, required also for the visibility fits. This distribution is in agreement with the one recently proposed by Jura in a study that probed the outer regions of the envelope. Since our constraints on the size distribution mostly reflect the envelope's inner regions, the agreement of these independent studies is evidence against significant changes in grain sizes through effects like sputtering or grain growth after the initial formation at the dust condensation zone.
description: LaTeX with 3 figures, requires MNRAS mn.sty; figures and/or complete PS or PS.Z preprint (7 pages) available by anonymous ftp at ftp://asta.pa.uky.edu/ivezic/irc10216/irc10216.ps (or fig1.ps, fig2.ps, fig3.ps)
Far infrared measurements of absorptions by CH4+CO2 and H2+CO2 mixtures and implications for greenhouse warming on early Mars
Creators: name: Turbet, Martin
name: Tran, Ha
name: Pirali, Olivier
name: Forget, Francois
name: Boulet, Christian
name: Hartmann, Jean-Michel
Publisher: name: arXiv
Year: 2018
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We present an experimental study of the absorption, between 40 and 640 cm$^{-1}$, by CO$_2$, CH$_4$ and H$_2$ gases as well as by H$_2$+CO$_2$ and CH$_4$+CO$_2$ mixtures at room temperature. A Fourier transform spectrometer associated to a multi-pass cell, whose optics were adjusted to obtain a 152 m pathlength, were used to record transmission spectra at total pressures up to about 0.98 bar. These measurements provide information concerning the collision-induced absorption (CIA) bands as well as about the wing of the CO$_2$ 15 $μ$m band. Our results for the CIAs of pure gases are, within uncertainties, in agreement with previous determinations, validating our experimental and data analysis procedures. We then consider the CIAs by H$_2$+CO$_2$ and CH$_4$+CO$_2$ and the low frequency wing of the pure CO$_2$ 15 $μ$m band, for which there are, to our knowledge, no previous measurements. We confirm experimentally the theoretical prediction of Wordsworth et al. 2017 that the H$_2$+CO$_2$ and CH$_4$+CO$_2$ CIAs are significantly stronger in the 50-550 cm$^{-1}$ region than those of H$_2$+N$_2$ and CH$_4$+N$_2$, respectively. However, we find that the shape and the strength of these recorded CIAs differ from the aforementioned predictions. For the pure CO$_2$ line-wings, we show that both the $χ$-factor deduced from measurements near 4 $μ$m and a line-mixing model very well describe the observed strongly sub-Lorentzian behavior in the 500-600 cm$^{-1}$ region. These experimental results open renewed perspectives for studies of the past climate of Mars and extrasolar analogues.
description: Accepted for publication in Icarus. 22 pages, 7 figures, 2 tables
An ergonomic evaluation of pannists
Creators: name: Joseph, Chrystal
name: Walters, Ayana U. C.
name: Lawrence, Wendy L.
name: Jalsa, Nigel Kevin
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Hematology

description: Instrumentalists and specifically percussionists have been found to develop musculoskeletal disorders (MSDs) due to the nature of their work. This study aimed to assess the MSD risk factors associated with playing the steel pan, which was invented in Trinidad and Tobago in the 20th century. A sample of 13 pannists and 13 non-pannists completed a modified Nordic Musculoskeletal Questionnaire and data analysis included multiple correlations, Student’s t test, the Moore–Garg strain index and calculation of compressive force at the L5/S1 vertebrae. The prevalence of pain was found to be greater among the pannists; a strain index of 22.78 was calculated and the compressive force was determined to be 4507.8 N, which indicated that pannists have a high risk of developing MSDs of the upper limbs and lower back. The risk factors identified for the development of MSDs were similar to those of previous studies.
Larus Linnaeus, 1758, gen. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Charadriiformes
Laridae
Larus

description: Larus [gen. nov.]
Rostrum edentulum, rectum, cultratum, apice declive: Mandibula inferior infra apicem gibba.
Nares lineares, antice latiores.
description: Published as part of Linnaeus, Carolus, 1758, Systema Naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, Stockholm :Laurentius Salvius on page 136, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
Untangling entanglement and chaos
Creators: name: Kumari, Meenu
name: Ghose, Shohini
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a method to calculate an upper bound on the generation of entanglement in any spin system using the Fannes-Audenaert inequality for the von Neumann entropy. Our method not only is useful for efficiently estimating entanglement, but also shows that entanglement generation depends on the distance of the quantum states of the system from corresponding minimum-uncertainty spin coherent states (SCSs). We illustrate our method using a quantum kicked top model, and show that our upper bound is a very good estimator for entanglement generated in both regular and chaotic regions. In a deep quantum regime, the upper bound on entanglement can be high in both regular and chaotic regions, while in the semiclassical regime, the bound is higher in chaotic regions where the quantum states diverge from the corresponding SCSs. Our analysis thus explains previous studies and clarifies the relationship between chaos and entanglement.
description: Published in Physical Review A
Larus tridactylus Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Charadriiformes
Laridae
Larus
Larus tridactylus

description: Larus tridactylus [spec. nov.]
L. albicans dorso canescente, rectricibus excepto extimo nigris, pedibus tridactylis.
Larus hybernus. Alb. av. 2. p. 80. t. 87.
Larus cinereus. Bell. av... Raj. av. 128. n. 4.
Habitat in Europa septentrionali.
description: Published as part of Linnaeus, Carolus, 1758, Systema Naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, Stockholm :Laurentius Salvius on page 136, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
title: ADCO, Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome V, Cart. 189 (11 H 74), 316 folios, f. 0167r
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome V, Archives départementales de la Côte-d'Or, Cart. 189 (11 H 74), 316 folios, f. 0167r, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome V, Archives départementales de la Côte-d'Or, Cart. 189 (11 H 74), 316 folios, f. 0167r, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
title: Purchasing, praising and promoting Whistler's etchings: The American collector Howard Mansfield, (1849-1938)
Creators: name: Reid, Natalie Sarah
Publisher: name: University of Glasgow
Year: 2007
Subjects: subject: Art history, James McNeill Whistler, Howard Mansfield, etchings, collections.

description: This thesis examines the collection of Whistler etchings assembled by Howard Mansfield (1849-1938). The first section examines the beginnings of Mansfield's collection considering the initial motivations that drove the collector to begin his collection. The motivations that sustained his collecting activities between 1876 and 1919 are considered. The context of the American Etching Revival is also considered. The second section is a comparison between Mansfield's collecting activities and those of Whistler's chief patron, Charles Lang Freer (1856-1919). Both collectors' motivations are considered in relation to the purchase of Whistler's first etching Sketches on a Coast Survey Plate, (figure 2.1, Kl). The third chapter of this thesis looks at Mansfield's writings on Whistler, especially his catalogue raisonne of Whistler's etchings published in 1909. This catalogue is compared to the better known and commonly used catalogue compiled by Edward. G. Kennedy (1849-1932) and published in 1910. Chapter four looks at exhibitions of Whistler etching that Mansfield organised; these are examined in relation to Whistler's own exhibition activities and techniques and reveal the ways in which Mansfield promoted Whistler's etchings in America. The overall aim of this thesis is to establish the significance of Howard Mansfield as a connoisseur in the context of contemporary public and private collections, thus contributing to print and collecting studies.
Direct photon production in Au+Au collisions at 200 GeV with PHENIX
Creators: name: Sharma, Deepali
Publisher: name: Zenodo
Year: 2024
Subjects: wwnd24
phenix
photon
thermal photon
au+au
centrality
elliptic
flow
rgamma
multiplicity
scaling
hadron

description: Talk presented at the Winter Workshop on Nuclear Dynamics, 2024 conference
CubeSLAM: Monocular 3D Object SLAM
Creators: name: Yang, Shichao
name: Scherer, Sebastian
Publisher: name: arXiv
Year: 2018
Subjects: subject: Robotics (cs.RO)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: We present a method for single image 3D cuboid object detection and multi-view object SLAM in both static and dynamic environments, and demonstrate that the two parts can improve each other. Firstly for single image object detection, we generate high-quality cuboid proposals from 2D bounding boxes and vanishing points sampling. The proposals are further scored and selected based on the alignment with image edges. Secondly, multi-view bundle adjustment with new object measurements is proposed to jointly optimize poses of cameras, objects and points. Objects can provide long-range geometric and scale constraints to improve camera pose estimation and reduce monocular drift. Instead of treating dynamic regions as outliers, we utilize object representation and motion model constraints to improve the camera pose estimation. The 3D detection experiments on SUN RGBD and KITTI show better accuracy and robustness over existing approaches. On the public TUM, KITTI odometry and our own collected datasets, our SLAM method achieves the state-of-the-art monocular camera pose estimation and at the same time, improves the 3D object detection accuracy.
description: IEEE Transactions on Robotics
The Implementation of the Canons on Mass Offerings in Particular Law and Custom with Special Reference to the Dioceses of Cameroon
Creators: name: Ndey, Francis
Publisher: name: Université Saint-Paul / Saint Paul University
Year: 2019
Subjects: Mass offering
Customs
Catholism
Theology

description: The immemorial practice of the institute of Mass offerings and its reaffirmation in the present universal law of the Church presents several canonical problems, especially with the proper implementation and application of the canons on Mass offerings in particular law and the customs of particular Churches. This work explores the historical origins and development, the theological understanding and the practice of the Mass offering system within the Church, with the view of a proper and equitable application of the canons on Mass offerings within the customs and particular law of particular Churches in Cameroon. It develops the proper interpretation and application of the canons on Mass offerings in particular law. The first chapter considers the historical origins and evolution of the practice of Mass offerings. The introduction of monetary transactions within Eucharistic praxis influenced the development of an economic theology of the fruits of the Mass. The pastoral practice of the limitation of the application of the fruits of the Mass to one Mass offering donor, to the exclusion of others, had the consequent theological effect of introducing the language of economics and commerce in the conceptualization of Eucharistic theology and efficacy of the Mass. The second chapter presents a systematic exposure and analysis of the scope of canonical doctrine in actual legislation governing Mass offerings, analyzed in light of the 1917 Code, the 1974 motu proprio Firma in traditione, and the decree Mos iugiter on “pluri-intentional” Masses. This chapter accentuates the right of the priest celebrant with regard to the Mass offering, a grant of the universal law of the Church, while also underscoring the complete and total exclusion of any semblance of trafficking or commerce within the Mass offering transaction. The third chapter addresses the issue of simony and the various juridical theories devised to justify the practice of Mass offerings and the avoidance of all charges of simony. The fourth and final chapter focuses on the implementation and application of the canons on Mass offerings in particular law and customs within the dioceses of Cameroon. In light of the assessment of some questionable practices within some the dioceses in Cameroon, we have proposed a uniform praxis based on sound canonical principles that if prudently and equitably applied within the dioceses of Cameroon will eliminate questionable and unorthodox practices.
A High Velocity Cloud near the Center of the Galaxy
Creators: name: Oka, T.
name: White, G. J.
name: Hasegawa, T.
name: Sato, F.
name: Tsuboi, M.
name: Miyazaki, A.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the detection of a peculiar molecular cloud, CO 0.02-0.02, lying about 5' Galactic-east from the center of the Galaxy. (12)CO images taken with NRO 45 m telescope showed that it is relatively compact (about 3x4 pc^2) as well as having a very large velocity width (DV>=100 km s(-1)). The cloud has a virial mass about one order of magnitude larger than the LTE mass, 9E4 M(solar), indicating the cloud is apparently gravitationally unbound. New observations with the JCMT 15 m and the NRO 45 m telescope show that CO 0.02-0.02 is very bright in the CO J=3-2, and in the HCN and HCO+ J=1-0 lines. It appears that the environment may have an unusually high density and temperature, which may be related to the very broad CO line-width. We propose that CO 0.02-0.02 may have been accelerated, heated and compressed in a series of supernovae shocks which have occurred within the last (3-5)E4$ years.
description: 17 pages, 6 figures. Accepted for publication in The Astrophysical Journal
Larus canus Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Charadriiformes
Laridae
Larus
Larus canus

description: Larus canus [spec. nov.]
L. albus, dorso cano. Fn. svec. 125.
Larus albus. Alb. av. 2. p. 77. t. 84.
Habitat in Europa.
Agitati Lari evomunt aut explodunt cibum.
description: Published as part of Linnaeus, Carolus, 1758, Systema Naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, Stockholm :Laurentius Salvius on page 136, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206