cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Selfish & Opaque Transaction Ordering in the Bitcoin Blockchain: The Case for Chain Neutrality
Creators: name: Messias, Johnnatan
name: Alzayat, Mohamed
name: Chandrasekaran, Balakrishnan
name: Gummadi, Krishna P.
name: Loiseau, Patrick
name: Mislove, Alan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Most public blockchain protocols, including the popular Bitcoin and Ethereum blockchains, do not formally specify the order in which miners should select transactions from the pool of pending (or uncommitted) transactions for inclusion in the blockchain. Over the years, informal conventions or "norms" for transaction ordering have, however, emerged via the use of shared software by miners, e.g., the GetBlockTemplate (GBT) mining protocol in Bitcoin Core. Today, a widely held view is that Bitcoin miners prioritize transactions based on their offered "transaction fee-per-byte." Bitcoin users are, consequently, encouraged to increase the fees to accelerate the commitment of their transactions, particularly during periods of congestion. In this paper, we audit the Bitcoin blockchain and present statistically significant evidence of mining pools deviating from the norms to accelerate the commitment of transactions for which they have (i) a selfish or vested interest, or (ii) received dark-fee payments via opaque (non-public) side-channels. As blockchains are increasingly being used as a record-keeping substrate for a variety of decentralized (financial technology) systems, our findings call for an urgent discussion on defining neutrality norms that miners must adhere to when ordering transactions in the chains. Finally, we make our data sets and scripts publicly available.
description: This is a pre-print of our paper accepted to appear to ACM IMC 2021
Magnetic field induced Valley-Polarized Quantum Anomalous Hall Effects in Ferromagnetic van der Waals Heterostructures
Creators: name: Zhan, Fangyang
name: Zheng, Baobing
name: Xiao, Xiaoliang
name: Fan, Jing
name: Wu, Xiaozhi
name: Wang, Rui
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The valley-polarized quantum anomalous Hall effect (VQAHE) attracts intensive interest since it uniquely combines valleytronics and spintronics with nontrivial band topology. Here, based on first-principles calculations and Wannier-function-based tight-binding (WFTB) model, we reveal that valley-based Hall effects and especially the VQAHE induced by external magnetic fields can occur in two-dimensional (2D) ferromagnetic van der Waals heterostructures (vdWHs). The results show that considerable valley-splitting derived from the Zeeman exchange energy drives these vdWHs generating the valley anomalous Hall effect and then the VQAHE. The chiral edge states and quantized Hall conductance are utilized to confirm the presence of VQAHE. Besides, it is also found that external electric fields (or tuning interlayer distances) can facilitate the realization of VQAHE, and thus we present a phase diagram in a broad parameter regime of magnetic fields and electric fields (or interlayer distances). Our work not only offers a class of ferromagnetic vdWHs to realize various valley-based Hall phases, but also can guide advancements for designing topological devices with spin-valley filtering effects based on the VQAHE.
description: 6 pages, 4 figures in the main text
Phonon dispersion and elastic moduli of two-dimensional disordered colloidal packings of soft particles with frictional interactions
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2014
Subjects: cond-mat.soft

description: Particle tracking and displacement covariance matrix techniques are employed to investigate the phonon dispersion relations of two-dimensional colloidal glasses composed of soft, thermoresponsive microgel particles whose temperature-sensitive size permits in situ variation of particle packing fraction. Bulk, B, and shear, G, moduli of the colloidal glasses are extracted from the dispersion relations as a function of packing fraction, and variation of the ratio G/B with packing fraction is found to agree quantitatively with predictions for jammed packings of frictional soft particles. In addition, G and B individually agree with numerical predictions for frictional particles. This remarkable level of agreement enabled us to extract an energy scale for the interparticle interaction from the individual elastic constants and to derive an approximate estimate for the interparticle friction coefficient. © 2014 American Physical Society.
Extrachromosomal circular DNA elements in human gouty inflammatory
Creators: name: 厉磊(Lei Li)
Publisher: name: CNGB
Year: 2022
Subjects: Raw sequence reads
Multiisolate
Medical

description: Gout is an autoinflammatory disease caused by the deposition of monosodium urate (MSU) crystals in tissues and joints, and it is now the most common inflammatory arthritis. The epidemiology worldwide shows an increase in incidence and prevalence in both developed and developing countries. Extrachromosomal circular DNA elements (eccDNAs) are derived from genomic DNA and range in size from a few hundred bases to megabases. EccDNAs are known for their broad existence across different species and there is growing evidence that they play important functions in many biological processes. In this study, we performed an optimized next generation sequencing-based Circle-Seq method to investigate eccDNAs in plasma from 4 patients with acute gout and 4 healthy human samples. Our research illustrated that eccDNAs existed in plasma, which might act as a novel potential biomarker of gouty inflammation in the future.
The reflector problem and the inverse square law
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2014
Subjects: Geometric optics
Reflector and antenna design
Pdes of Monge-Ampere type
Inverse problems

description: We introduce a model to design reflectors that take into account the inverse square law for radiation. We prove existence of solutions both in the near and far field cases, when the input and output energies are prescribed. © 2013 Elsevier Ltd. All rights reserved.
Lax matrices from antidominantly shifted Yangians and quantum affine algebras: A-type
Creators: name: Frassek, Rouven
name: Pestun, Vasily
name: Tsymbaliuk, Alexander
Publisher: name: arXiv
Year: 2020
Subjects: subject: Representation Theory (math.RT)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We construct a family of $GL_n$ rational and trigonometric Lax matrices $T_D(z)$ parametrized by $Λ^+$-valued divisors $D$ on $\mathbb{P}^1$. To this end, we study the shifted Drinfeld Yangians $Y_μ(\mathfrak{gl}_n)$ and quantum affine algebras $U_{μ^+,μ^-}(L\mathfrak{gl}_n)$, which slightly generalize their $\mathfrak{sl}_n$-counterparts. Our key observation is that both algebras admit the RTT type realization when $μ$ (respectively, $μ^+$ and $μ^-$) are antidominant coweights. We prove that $T_D(z)$ are polynomial in $z$ (up to a rational factor) and obtain explicit simple formulas for those linear in $z$. This generalizes the recent construction by the first two authors of linear rational Lax matrices in both trigonometric and higher $z$-degree directions. Furthermore, we show that all $T_D(z)$ are normalized limits of those parametrized by $D$ supported away from $\{\infty\}$ (in the rational case) or $\{0,\infty\}$ (in the trigonometric case). The RTT approach provides conceptual and elementary proofs for the construction of the coproduct homomorphisms on shifted Yangians and quantum affine algebras of $\mathfrak{sl}_n$, previously established via rather tedious computations. Finally, we establish a close relation between a certain collection of explicit linear Lax matrices and the well-known parabolic Gelfand-Tsetlin formulas.
description: v2: 57 pages, typos fixed, some details and references added. v1: 54 pages, comments are welcome!
resnet34-ssd1200 onnx model
Creators: name: Mlperf
Publisher: name: Zenodo
Year: 2019

description: Application: Object Detection ML Task: ssd-resnet34 Framework: onnx Training Information:  Quality: 0.20% Precision: fp32 Is Quantized: no Is ONNX: yes Dataset: http://images.cocodataset.org/zips/val2014.zip (resized to 1200x1200) Source Model: https://github.com/mlperf/inference/tree/master/cloud/single_stage_detector
description: created from pytorch model using the instructions from here: https://github.com/BowenBao/inference/tree/master/cloud/single_stage_detector/pytorch#6-onnx
Coexisting of Quantum Hall and Quantum Anomalous Hall phases in Disordered $\mathrm{MnBi_2Te_4}$
Creators: name: Li, Hailong
name: Chen, Chui-Zhen
name: Jiang, Hua
name: Xie, X. C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In most cases, to observe quantized Hall plateaux, an external magnetic field is applied in intrinsic magnetic topological insulators $\mathrm{MnBi_2Te_4}$. Nevertheless, whether the nonzero Chern number ($C\neq 0$) phase is a quantum anomalous Hall (QAH) state, or a quantum Hall (QH) state, or a mixing state of both is still a puzzle, especially for the recently observed $C=2$ phase [Deng \textit{et al}., Science \textbf{367}, 895 (2020)]. In this Letter, we propose a physical picture based on the Anderson localization to understand the observed Hall plateaux in disordered $\mathrm{MnBi_2Te_4}$. Rather good consistency between the experimental and numerical results confirms that the bulk states are localized in the absence of a magnetic field and a QAH edge state emerges with $C=1$. However, under a strong magnetic field, the lowest Landau band formed with the localized bulk states, survives disorder, together with the QAH edge state, leading to a $C=2$ phase. Eventually, we present a phase diagram of a disordered $\mathrm{MnBi_2Te_4}$ which indicates more coexistence states of QAH and QH to be verified by future experiments.
Trained ssd-resnet34 onnx model for MLPerf Cloud Inference
Creators: name: Mlperf
Publisher: name: Zenodo
Year: 2019

description: Application: Object Detection
	ML Task: ssd-resnet34
	Framework: onnx
	Training Information:
	Quality: 0.20%
	Precision: fp32
	Is Quantized: no
	Is ONNX: yes
	Dataset: http://images.cocodataset.org/zips/val2014.zip (resized to 1200x1200)
	Source Model: https://github.com/mlperf/inference/tree/master/cloud/single_stage_detector
description: created from pytorch model using the instructions from here: https://github.com/BowenBao/inference/tree/master/cloud/single_stage_detector/pytorch#6-onnx
Dark matter halo abundances, clustering and assembly histories at high redshift
Creators: name: Cohn, J. D.
name: White, Martin
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use a suite of high-resolution N-body simulations to study the properties, abundance and clustering of high mass halos at high redshift, including their mass assembly histories and mergers. We find that the analytic form which best fits the abundance of halos depends sensitively on the assumed definition of halo mass, with common definitions of halo mass differing by a factor of two for these low concentration, massive halos. A significant number of massive halos are undergoing rapid mass accretion, with major merger activity being common. We compare the mergers and mass accretion histories to the extended Press-Schechter formalism. We consider how major merger induced star formation or black hole accretion may change the distribution of photon production from collapsed halos, and hence reionization, using some simplified examples. In all of these, the photon distribution for a halo of a given mass acquires a large scatter. If rare, high mass halos contribute significantly to the photon production rates, the scatter in photon production rate can translate into additional scatter in the sizes of ionized bubbles.
description: 9 pages, 9 figures, resubmitted to MNRAS, added some references and convergence tests to better constrain bias
Visualizing Japan’s Wartime Pan-Asianism: The Ideological Landscape in Triumphal Entry into Nanjing
Creators: name: Cao, Yi
Publisher: name: University of Chicago
Year: 2019
Subjects: subject: Pan-Asianism
subject: Wartime record Painting
subject: Modern Japan
subject: Modern China
subject: Nanjing
subject: WWII

description: This thesis examines Kanokogi Takeshirō’s (1874-1941) painting, Triumphal Entry into Nanjing (1940), as a visual representation and witness of Pan-Asianism at its critical transformation in wartime Japan. A tribute to the Japanese army and the Yasukuni Shrine, the painting depicts the scene in which the army, after taking over China’s capital on December 13th, 1937, held an official ceremony of the city entry on the 17th. Nanjing invites a new way of looking at wartime record paintings produced in the 1930s and 40s, most of the existing research on which focuses only on the representation of either the establishment or disintegration of the human figures. This thesis argues that Nanjing shifts the visual emphasis from the representation of human figures to the identified landscape elements, thus inverting the pictorial construction by giving both visual and ideological primacy to the compositional background instead of the foreground. It successfully overcomes the circumscriptions of both objectivity and a mere record of war. Instead, the painting actively witnesses the historical event by involving its viewers into a nationalistic participation, through which the notion of a communal body is given form. This thesis, while providing a detailed visual examination of Nanjing and its comparison with photographs and architecture, combines different types of media and literature—including news reports, memoirs, and travelogues—in order to demonstrate Nanjing’s capacity as an ideologically charged symbolism that uses the landscape to generate a specific interpretation—of the occupied territory and its national icons—that fits with Japan’s own Pan-Asian and colonial ideals. In general, this thesis intends to shed light on the art historical understanding of the subtlety and ambiguity of Japan’s wartime ideology, one that consists of both violence and a (re)imagination of Asia that overcomes borderlines and modernity.
Dielectron mass spectra from Au+Au collisions at sNN =200 GeV
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2014
Subjects: STAR Collaboration

description: We report the STAR measurements of dielectron (e+e-) production at midrapidity (|yee|<1) in Au+Au collisions at sNN=200GeV. The measurements are evaluated in different invariant mass regions with a focus on 0.30-0.76 (ρ-like), 0.76-0.80 (ω-like), and 0.98-1.05 (φ-like) GeV/c2. The spectrum in the ω-like and φ-like regions can be well described by the hadronic cocktail simulation. In the ρ-like region, however, the vacuum ρ spectral function cannot describe the shape of the dielectron excess. In this range, an enhancement of 1.77±0.11(stat)±0.24(syst)±0. 33(cocktail) is determined with respect to the hadronic cocktail simulation that excludes the ρ meson. The excess yield in the ρ-like region increases with the number of collision participants faster than the ω and φ yields. Theoretical models with broadened ρ contributions through interactions with constituents in the hot QCD medium provide a consistent description of the dilepton mass spectra for the measurement presented here and the earlier data at the Super Proton Synchrotron energies. © 2014 American Physical Society.
Femtosecond Photoionization of Atoms under Noise
Creators: name: Singh, Kamal P.
name: Rost, Jan M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the effect of incoherent perturbations on atomic photoionization due to a femtosecond mid-infrared laser pulse by solving the time-dependent stochastic Schrödinger equation. For a weak laser pulse which causes almost no ionization, an addition of a Gaussian white noise to the pulse leads to a significantly enhanced ionization probability. Tuning the noise level, a stochastic resonance-like curve is observed showing the existence of an optimum noise for a given laser pulse. Besides studying the sensitivity of the obtained enhancement curve on the pulse parameters, such as the pulse duration and peak amplitude, we suggest that experimentally realizable broadband chaotic light can also be used instead of the white noise to observe similar features. The underlying enhancement mechanism is analyzed in the frequency-domain by computing a frequency-resolved atomic gain profile, as well as in the time-domain by controlling the relative delay between the action of the laser pulse and noise.
description: 10 pages, 10 figures
Polarized hadron pair production from electron-positron annihilation
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2014
Subjects: hep-ph
hep-ex

description: We study the production of two almost back-to-back hadrons from the annihilation of an electron and a positron, allowing for the polarization of all particles involved. In particular, we conduct a general (model-independent) structure function decomposition of the cross section for the case e+e-→γ*→hahbX. Moreover, using the parton model we calculate the relevant structure functions in terms of twist-2 transverse momentum dependent (TMD) fragmentation functions (FFs). We also give results for the situation e+e-→Z*→hahbX (including γ-Z interference) within this model. This is the first time a complete framework has been presented for the examination of TMD FFs within e+e-→hahbX. We also specify certain parts of our analysis that hold for the triple-polarized semi-inclusive deep-inelastic scattering process and for di-hadron fragmentation. Furthermore, we give an explicit prescription of how our work can be translated to the Drell-Yan reaction, which provides, for the first time, full results for double-polarized Drell-Yan that include electroweak effects. We further discuss the relevance of our e+e-→hahbX results for future experiments at e+e- machines. © 2014 American Physical Society.
CausalRec: Causal Inference for Visual Debiasing in Visually-Aware Recommendation
Creators: name: Qiu, Ruihong
name: Wang, Sen
name: Chen, Zhi
name: Yin, Hongzhi
name: Huang, Zi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Visually-aware recommendation on E-commerce platforms aims to leverage visual information of items to predict a user's preference. It is commonly observed that user's attention to visual features does not always reflect the real preference. Although a user may click and view an item in light of a visual satisfaction of their expectations, a real purchase does not always occur due to the unsatisfaction of other essential features (e.g., brand, material, price). We refer to the reason for such a visually related interaction deviating from the real preference as a visual bias. Existing visually-aware models make use of the visual features as a separate collaborative signal similarly to other features to directly predict the user's preference without considering a potential bias, which gives rise to a visually biased recommendation. In this paper, we derive a causal graph to identify and analyze the visual bias of these existing methods. In this causal graph, the visual feature of an item acts as a mediator, which could introduce a spurious relationship between the user and the item. To eliminate this spurious relationship that misleads the prediction of the user's real preference, an intervention and a counterfactual inference are developed over the mediator. Particularly, the Total Indirect Effect is applied for a debiased prediction during the testing phase of the model. This causal inference framework is model agnostic such that it can be integrated into the existing methods. Furthermore, we propose a debiased visually-aware recommender system, denoted as CausalRec to effectively retain the supportive significance of the visual information and remove the visual bias. Extensive experiments are conducted on eight benchmark datasets, which shows the state-of-the-art performance of CausalRec and the efficacy of debiasing.
การพัฒนาโปรแกรมเพื่อวิเคราะห์และควบคุมประสิทธิภาพของการเปลี่ยนเชื้อเพลิงเป็นไอน้ำด้วยวิธีสมดุลความร้อนของหม้อไอน้ำ
Creators: name: ณัฐพงศ์  พันธุนะ
Publisher: name: มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร
Year: 2007
Subjects: สมดุลความร้อน, พลังงานความร้อนร่วม, ประสิทธิภาพหม้อไอน้ำ, ไอน่ำ

description: 1, 1, วารสารวิชาการและวิจัย มทร.พระนคร
Soils of three grassland-forest ecotones north of Kamloops, British Columbia
Creators: name: Jakoy, Andrew Geza
Publisher: name: University of British Columbia
Year: 2010

description: Soils and vegetation of a grassland - forest ecotone north of Kamloops, British Columbia, were studied on three systematically selected transects. This investigation was to determine the pedogenesis and taxonomy of these transitional soils and to check the stability of the grassland - forest boundary. The transects ranged in length of 1.0, 0.8 and 0.4 km, and the elevation ranged from 740 to 890, from 900 to 1000 and from 920 to 940 m respectively. Along the three transects fourteen pedons were sampled. The soil climatic subclasses ranged from cool-subarid to cold-subhumid throughout the area, depending on elevation and physiographic location. The associated vegetation was Agropyron - (Artemesia) grassland and Pinus ponderosa - (Pseudotsuga menziesii) savanna - like forest at 740 to 890 m elevations. The vegetation, at 900 to 1000m elevation, was Agropyron - Festuca - (Stipa) grassland, bordering Pseudotsuga menziesii park-like forest. Physical analyses of soil samples determined particle size, including fine clays and moisture retention for all sampled horizons. Mineralogy of < 2.0 μm clays was checked by X-ray diffraction. Chemical analyses determined soil reation, organic carbon contents, carbon/nitrogen ratios, exchangeable cations and total base saturations for each sampled horizon. Organic fractions of nine selected Ah horizons were analyzed for humic, fulvic acid contents and absorption spectra between 400 and 700 μm. Micromorphology of the Bm(Bt) horizons of each pedon was analyzed to detect clay illuviation. Phytolith contents and grass species composition of silt extracts of nine sola were examined to find correlation with past vegetations. No forest influence was detected in the present grassland areas established on compacted or on locally dry, ice-disintegration moraines. These grasslands have orthic subgroups of Dark Brown and Black soils. At the present forest edge, a tension zone exists where scattered ponderosa pines and Douglas-firs may encroach upon the grasslands having Ghernozemic soils of low bulk density, at elevations between 820 - 850 m. At elevations of 900 - 930 m, aspen groves occupy Orthic Ghernozemic soils in depressions. Forests of ponderosa pine and Douglas-fir occupy slopes steeper than 20° above 850 to 900 m on colluvium. All-aged Douglas-fir forests occupy morainal materials above 930 m on stable surfaces. The soils of these forests are Eutric and Melanic Brunisols.
title: Così lontani, così vicini. Vecchie e nuove emigrazioni delle persone emiliano romagnole in Francia, Svizzera e Regno Unito
Creators: name: Musarò, Pierluigi
name: Peca, Stefania
Publisher: name: Dipartimento di Sociologia e Diritto dell'Economia
Year: 2024

description: In continuità con la ricerca "Verso un turismo delle radici in Emilia-Romagna" effettuata nel 2022/23 sulle comunità di emiliano-romagnoli in Argentina e Brasile, questo progetto mira a indagare il sentimento di appartenenza degli emiliano romagnoli in Francia, Svizzera e Gran Bretagna in relazione alla loro terra di origine e le loro aspettative o abitudini di viaggio nei luoghi delle origini.
Alla luce del fatto che nell’agenda del Ministero italiano degli affari esteri e della cooperazione internazionale il 2024 è individuato come l’anno della promozione del “turismo delle radici”, un focus speciale tratta anche il tema della nuova mobilità, andando a indagare l’immagine che gli emiliano-romagnoli trasferitisi in suddetti paesi negli ultimi anni hanno del loro territorio di nascita e le modalità di fruizione dello stesso in occasione dei ritorni a casa.
The near field refractor
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2014
Subjects: math.AP
physics.optics
78A05, 35Q60, 52B12, 47H04

description: We present an abstract method in the setting of compact metric spaces which is applied to solve a number of problems in geometric optics. In particular, we solve the one source near field refraction problem. That is, we construct surfaces separating two homogeneous media with different refractive indices that refract radiation emanating from the origin into a target domain contained in an n-1 dimensional hypersurface. The input and output energy are prescribed. This implies the existence of lenses focusing radiation in a prescribed manner. © 2013 Elsevier Masson SAS. All rights reserved.
Millisecond dip events in the 2007 RXTE/PCA data of Sco X-1 and the TNO size distribution
Creators: name: Liu, Chih-Yuan
name: Chang, Hsiang-Kuang
name: Liang, Jau-Shian
name: King, Sun-Kun
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Millisecond dips in the RXTE/PCA archival data of Sco X-1 taken from 1996 to 2002 were reported recently. Those dips were found to be most likely caused by instrumental dead time but may also contain some true astronomical events, which were interpreted as the occultation of X-rays from Sco X-1 by Trans-Neptunian Objects (TNO) of 100-m size. Here we report the results of search for millisecond dip events with the new RXTE/PCA data of Sco X-1 taken in year 2007. Adopting the same selection criteria as that in the previous study, we found only 3 dip events in 72-ks data, much fewer than the 107 events found in the 560-ks data taken from 1996 to 2002 reported earlier. The new data provides more detailed information of individual `very large events' (VLEs), which is not available in the old archival data. Although the number of VLEs does not obviously increase during the occurrence of dip events, all the 3 dip events are coincident in time with VLEs that have no flags set for any of the propane or the 6 main xenon anodes. It is a strong indication of instrumental effects. No significant dips which might be real occultation by 60 -- 100 m TNOs were observed. With only 72-ks data, however, the previously proposed possibility that about 10 percent of the dip events might not be instrumental still cannot be strictly excluded. Using the absence of those anomalous VLEs as the criterion for identifying non-instrumental dip events, we found, at a lower confidence level, 4 dip events of duration 8 - 10 ms in the 72-ks data. Upper limits to the size distribution of TNOs at the small size end are suggested.
description: 5 pages, 6 figures, accepted by MNRAS on May 8, 2008
Infecções Sexualmente Transmissíveis: Manual com Dicas para Educadores
Creators: name: Silva, Ivo Caetano da
name: Bezerra, Maria Lusia de Morais Belo
name: Santos, Marina Marta dos
name: Farias, Maria Betania Monteiro de
name: Santos, Maria Gabriella da Silva
Publisher: name: Zenodo
Year: 2024
Subjects: Ensino na saúde; Prevenção; Tecnologia educacional; metodologias ativas.

description: Este manual é um produto educacional da pesquisa “ANÁLISE DAS PERCEPÇÕES E PRÁTICAS EDUCATIVAS EM SAÚDE DE PROFESSORES: REFLEXÃO CRÍTICA E TRILHAS PARA ABORDAGEM SOBRE INFECÇÕES DE TRANSMISSÃO SEXUAL”, desenvolvida no Programa Institucional de Bolsas de Iniciação Científica (PIBIC) da Universidade Federal de Alagoas - UFAL, Edital 05 Pibic Ufal 2023-2024.  O estudo mencionado encontra-se vinculado ao Grupo de Estudo e Pesquisa em Educação, Saúde e Formação de Educadores - GESFE/UFAL

Finalidade: propor dicas, recursos e estrátégias didáticas que facilitem o processo de ensino-aprendizagem sobre Infecções Sexualmente Transmissíveis (ISTs) em diferentes espaços, respeitando a faixa etária e o cenário sociocultural dos educandos.

Público alvo: Profissionais educadores que atua na promoção da saúde, especialmente no contexto das ISTs e demais interessados.
Stability of multi-dimensional viscous shocks for symmetric systems with variable multiplicities
Creators: name: Nguyen, Toan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We establish long-time stability of multi-dimensional viscous shocks of a general class of symmetric hyperbolic--parabolic systems with variable multiplicities, notably including the equations of compressible magnetohydrodynamics (MHD) in dimensions $d\ge 2$. This extends the existing result established by K. Zumbrun for systems with characteristics of constant multiplicity to the ones with variable multiplicity, yielding the first such a stability result for (fast) MHD shocks. At the same time, we are able to drop a technical assumption on structure of the so--called glancing set that was necessarily used in previous analyses. The key idea to the improvements is to introduce a new simple argument for obtaining a $L^1\to L^p$ resolvent bound in low--frequency regimes by employing the recent construction of degenerate Kreiss' symmetrizers by O. Guès, G. Métivier, M. Williams, and K. Zumbrun. Thus, at the low-frequency resolvent bound level, our analysis gives an alternative to the earlier pointwise Green's function approach of K. Zumbrun. High--frequency solution operator bounds have been previously established entirely by nonlinear energy estimates.
description: 30 pages, the exposition is greatly expanded in details
ภาษาและวัฒนธรรมในบทพระราชนิพนธ์ในพระบาทสมเด็จพระเจ้าอยู่หัว บทพระราชนิพนธ์พระมหาชนก
Creators: name: สภัทรา โกไศยกานนท์
Publisher: name: มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร
Year: 2013
Subjects: บทพระราชนิพนธ์พระมหาชนก, การอภิปรายความ

description: 1, 7, วารสารวิชาการและวิจัย มทร.พระนคร
A Precise Photometric Ratio via Laser Excitation of the Sodium Layer I: One-photon Excitation Using 342.78 nm Light
Creators: name: Albert, J.
name: Budker, D.
name: Chance, K.
name: Gordon, I. E.
name: Bustos, F. Pedreros
name: Pospelov, M.
name: Rochester, S. M.
name: Sadeghpour, H. R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The largest uncertainty on measurements of dark energy using type Ia supernovae is presently due to systematics from photometry; specifically to the relative uncertainty on photometry as a function of wavelength in the optical spectrum. We show that a precise constraint on relative photometry between the visible and near-infrared can be achieved in upcoming surveys (such as in LSST at the Vera C. Rubin Observatory) via a mountaintop-located laser source tuned to the 342.78 nm vacuum excitation wavelength of neutral sodium atoms. Using a high-power (500 W) laser modified from laser guide star studies, this excitation will produce an artificial star (which we term a "laser photometric ratio star," or LPRS) of de-excitation light in the mesosphere that is observable from the ground at approximately 20 magnitude (i.e., well within the expected single-image magnitude limit of LSST) at wavelengths in vacuum of 589.16 nm, 589.76 nm, 818.55 nm, and 819.70 nm, with the sum of the numbers of 589.16 nm and 589.76 nm photons produced by this process equal to the sum of the numbers of 818.55 nm and 819.70 nm photons, establishing a precise calibration ratio between, for example, the LSST r and z filters. This technique can thus provide a novel mechanism for establishing a spectrophotometric calibration ratio of unprecedented precision, from above most of the Earth's atmosphere, for upcoming telescopic observations across astronomy and atmospheric physics. This article is the first in a pair of articles on this topic. The second article of the pair describes an alternative technique to achieve a similar, but brighter, LPRS than the technique described in this paper, by using two mountaintop-located lasers, at optical frequencies approximately 4 GHz away from resonances at wavelengths in vacuum of 589.16 nm and 819.71 nm respectively.
description: The second article in this pair of articles is at arXiv:2010.08683 . This article has 14 pages & 7 figures. Both articles are published in MNRAS. This most recent arXiv version fixes a minor error in the caption of Figure 4
A survey on Hungaria asteroids involved in mean motion resonances with Mars
Creators: name: Forgács-Dajka, E.
name: Sándor, Zs.
name: Sztakovics, J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Context. A region at the inner edge of the main asteroid belt is populated by the Hungaria asteroids. Among these objects, the Hungaria family is formed as the result of a catastrophic disruption of (434) Hungaria asteroid hundred million years ago. Due to the Yarkovsky effect, the fragments depending on their direction of rotation are slowly drifting inward or outward from the actual place of collision. Due to this slow drift these bodies could approach the locations of the various mean-motion resonances (MMRs) of outer type with Mars. Aims. We aim to study the actual dynamical structure of Hungaria asteroids that is primarily shaped by various MMRs of outer type with Mars. Moreover, we also seek connections between the orbital characteristics of Hungaria asteroids and their absolute magnitude. Methods. To map the resonant structure and dynamics of asteroids belonging to the Hungaria group, we use the method FAIR (as FAst Identification of mean motion Resonances), which can detect MMRs without the a priori knowledge of the critical argument. We also compile stability maps of the regions around the MMRs by using the maximal variations in the asteroids' eccentricities, semi-major axes, and inclinations. We numerically integrate the orbits of all asteroids belonging to the Hungaria group available in the JPL Horizon database together with the Solar System planets for one and ten million years. Results. Having studied the resonant structure of the Hungaria group, we find that several asteroids are involved in various MMRs with Mars. We identify both short and long-term MMRs. Besides, we also find a relationship between the absolute magnitude of asteroids and the MMR in which they are involved.
description: 13 pages, accepted in Astronomy and Astrophysics
Integrable structures of specialized hypergeometric tau functions
Creators: name: Takasaki, Kanehisa
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: 05E10, 14N10, 37K10

description: Okounkov's generating function of the double Hurwitz numbers of the Riemann sphere is a hypergeometric tau function of the 2D Toda hierarchy in the sense of Orlov and Scherbin. This tau function turns into a tau function of the lattice KP hierarchy by specializing one of the two sets of time variables to constants. When these constants are particular values, the specialized tau functions become solutions of various reductions of the lattice KP hierarchy, such as the lattice Gelfand-Dickey hierarchy, the Bogoyavlensky-Itoh-Narita lattice and the Ablowitz-Ladik hierarchy. These reductions contain previously unknown integrable hierarchies as well.
description: latex2e, 21pages, no figure, submitted to proceedings of RIMS workshop "Mathematical structures of integrable systems, its deepening and expansion" (September 9-11, 2019); (v2) many typos are corrected and a few formulae are added after Proposion 8.1
First Measurement of a Rapid Increase in the AGN Fraction in High-Redshift Clusters of Galaxies
Creators: name: Eastman, Jason
name: Martini, Paul
name: Sivakoff, Gregory
name: Kelson, Daniel D.
name: Mulchaey, John S.
name: Tran, Kim-Vy
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the first measurement of the AGN fraction in high-redshift clusters of galaxies (z~0.6) with spectroscopy of one cluster and archival data for three additional clusters. We identify 8 AGN in all four of these clusters from the Chandra data, which are sensitive to AGN with hard X-ray (2-10keV) luminosity L_{X,H} > 10^43 erg/s in host galaxies more luminous than a rest frame M_R < -20 mag. This stands in sharp contrast to the one AGN with L_{X,H} > 10^43 erg/s we discovered in our earlier study of eight low-redshift clusters with z=0.06-0.31 (average z~0.2). Three of the four high-redshift cluster datasets are sensitive to nearly L_{X,H} > 10^42 erg/s and we identify seven AGN above this luminosity limit, compared to two in eight, low-redshift clusters. Based on membership estimates for each cluster, we determine that the AGN fraction at z~0.6 is f_A(L_X>10^42;M_R10^43;M_R
description: ApJL Accepted, 5 pages, 2 figures
Local structural origins of the distinct electronic properties of Nb-substituted SrTiO$_3$ and BaTi$O_3$
Creators: name: Page, Katharine
name: Kolodiazhnyi, Taras
name: Proffen, Thomas
name: Cheetham, Anthony K.
name: Seshadri, Ram
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Near or less than 10% Nb substitution on the Ti site in perovskite SrTiO$_3$ results in metallic behavior, in contrast to what is seen in BaTiO$_3$. Given the nearly identical structure and electron counts of the two materials, the distinct ground states for low substitution have been a long-standing puzzle. Here we find from neutron studies of average and local structure, the subtle yet critical difference that we believe underpins the distinct electronic properties in these fascinating materials. While SrTi$_{0.875}$Nb_${0.125}$O$_3$ possesses a distorted non-cubic structure at 15 K, the BO$_6$ octahedra in the structure are regular. BaTi$_{0.875}$Nb$_{0.125}$O$_3$ on the other hand shows evidence for local cation off-centering whilst retaining a cubic structure.
description: 4 pages, 5 figures
Coupled Leidenfrost states as a monodisperse granular clock
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2016
Subjects: cond-mat.soft

description: © 2016 American Physical Society. Using an event-driven molecular dynamics simulation, we show that simple monodisperse granular beads confined in coupled columns may oscillate as a different type of granular clock. To trigger this oscillation, the system needs to be driven against gravity into a density-inverted state, with a high-density clustering phase supported from below by a gaslike low-density phase (Leidenfrost effect) in each column. Our analysis reveals that the density-inverted structure and the relaxation dynamics between the phases can amplify any small asymmetry between the columns, and lead to a giant oscillation. The oscillation occurs only for an intermediate range of the coupling strength, and the corresponding phase diagram can be universally described with a characteristic height of the density-inverted structure. A minimal two-phase model is proposed and a linear stability analysis shows that the triggering mechanism of the oscillation can be explained as a switchable two-parameter Andronov-Hopf bifurcation. Numerical solutions of the model also reproduce similar oscillatory dynamics to the simulation results.
Detection of Nocardia by 16S Ribosomal RNA gene PCR and Metagenomic Next-Generation Sequencing (mNGS)
Creators: name: 丁娟娟(Juanjuan Ding)
Publisher: name: CNGB
Year: 2022
Subjects: Raw sequence reads
Multispecies
Other
Detection of pathogenic microorganisms by mngs

description: mNGS technology is a technology that uses high-throughput sequencing to detect microorganisms in tissues. It can comprehensively detect the species, abundance and other information of known and unknown pathogenic microorganisms in samples. Compared with traditional PCR or culture methods, mngs technology is fast and does not need to predict microbial species. It has been gradually applied and popularized in clinic in recent years.
Solar neutrino detection in a large volume double-phase liquid argon experiment
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2016
Subjects: neutrino astronomy
neutrino detectors
neutrino experiments
solar and atmospheric neutrinos

description: © 2016 IOP Publishing Ltd and Sissa Medialab srl . Precision measurements of solar neutrinos emitted by specific nuclear reaction chains in the Sun are of great interest for developing an improved understanding of star formation and evolution. Given the expected neutrino fluxes and known detection reactions, such measurements require detectors capable of collecting neutrino-electron scattering data in exposures on the order of 1 ktonne-yr, with good energy resolution and extremely low background. Two-phase liquid argon time projection chambers (LAr TPCs) are under development for direct Dark Matter WIMP searches, which possess very large sensitive mass, high scintillation light yield, good energy resolution, and good spatial resolution in all three cartesian directions. While enabling Dark Matter searches with sensitivity extending to the ''neutrino floor'' (given by the rate of nuclear recoil events from solar neutrino coherent scattering), such detectors could also enable precision measurements of solar neutrino fluxes using the neutrino-electron elastic scattering events. Modeling results are presented for the cosmogenic and radiogenic backgrounds affecting solar neutrino detection in a 300 tonne (100 tonne fiducial) LAr TPC operating at LNGS depth (3,800 meters of water equivalent). The results show that such a detector could measure the CNO neutrino rate with ∼15% precision, and significantly improve the precision of the 7Be and pep neutrino rates compared to the currently available results from the Borexino organic liquid scintillator detector.
Points of differentiability of the norm in Lipschitz-free spaces
Creators: name: Aliaga, Ramón J.
name: Zoca, Abraham Rueda
Publisher: name: arXiv
Year: 2020
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 46B20, 49J50

description: We consider convex series of molecules in Lipschitz-free spaces, i.e. elements of the form $μ=\sum_n λ_n \frac{δ_{x_n}-δ_{y_n}}{d(x_n,y_n)}$ such that $\|μ\|=\sum_n |λ_n |$. We characterise these elements in terms of geometric conditions on the points $x_n$, $y_n$ of the underlying metric space, and determine when they are points of Gâteaux differentiability of the norm. In particular, we show that Gâteaux and Fréchet differentiability are equivalent for finitely supported elements of Lipschitz-free spaces over uniformly discrete and bounded metric spaces, and that their tensor products with Gâteaux (resp. Fréchet) differentiable elements of a Banach space are Gâteaux (resp. Fréchet) differentiable in the corresponding projective tensor product.
title: Open Set Gestenerkennung zur Interaktion zwischen Passanten und Fahrzeugen mit Automatisierungsfunktionen
Creators: name: Christian Reichhardt, Manuel Martin
Publisher: name: Gesellschaft für Informatik e.V.
Year: 2024
Subjects: subject: Gestenerkennung

description: Die Zunahme an intelligenten Steuerungssystemen in Fahrzeugen wirft zunehmend die
Frage auf, inwiefern ein Fahrzeug mit seiner Umgebung automatisch interagieren kann. Eine wichtige
Aufgabe besteht dabei in der Kommunikation und Interaktion mit Passanten am Fahrbahnrand, welche
eine anwendungsspezifische Gestenerkennung von Personen voraussetzt. Für die Erkennung solcher
Gesten existieren mittlerweile Ansätze auf Basis maschineller Bilderkennungsverfahren, welche
einfache Gesten erkennen können. Zwei wichtige Fragestellungen sind dabei, welche Aktionsklassen
durch ein Fahrzeug zuverlässig erkennbar sind und wie mit nicht explizit trainierten Aktionsgesten
umgegangen werden kann. Unter diesen Aspekten untersucht die vorliegende Arbeit die Fähigkeiten
und Grenzen der Gestenerkennung im Kontext relevanter Aktionen von Passanten im Straßenverkehr.
Hierzu wurde als Teil einer Verarbeitungskette das häufig verwendete tiefe neuronale Netz ST–GCN++
betrachtet und mit Gelenkpunkten von Personen in unterschiedlichen Detailgraden trainiert. Um mit
nicht explizit trainierten Gesten umgehen zu können, wurde eine Restklasse eingeführt, welche auf im
Training ungesehenen Gesten hohe Genauigkeiten erzielte.
Existence and Cardinality of $k$-Normal Elements in Finite Fields
Creators: name: Tinani, Simran
name: Rosenthal, Joachim
Publisher: name: arXiv
Year: 2020
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: Normal bases in finite fields constitute a vast topic of large theoretical and practical interest. Recently, $k$-normal elements were introduced as a natural extension of normal elements. The existence and the number of $k$-normal elements in a fixed extension of a finite field are both open problems in full generality, and comprise a promising research avenue. In this paper, we first formulate a general lower bound for the number of $k$-normal elements, assuming that they exist. We further derive a new existence condition for $k$-normal elements using the general factorization of the polynomial $x^m-1$ into cyclotomic polynomials. Finally, we provide an existence condition for normal elements in $\fqm$ with a non-maximal but high multiplicative order in the group of units of the finite field.
The individual and collective effects of exact exchange and dispersion interactions on the ab initio structure of liquid water
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2014
Subjects: cond-mat.soft
physics.chem-ph

description: In this work, we report the results of a series of density functional theory (DFT) based ab initio molecular dynamics (AIMD) simulations of ambient liquid water using a hierarchy of exchange-correlation (XC) functionals to investigate the individual and collective effects of exact exchange (Exx), via the PBE0 hybrid functional, non-local van der Waals/dispersion (vdW) interactions, via a fully self-consistent density-dependent dispersion correction, and an approximate treatment of nuclear quantum effects, via a 30 K increase in the simulation temperature, on the microscopic structure of liquid water. Based on these AIMD simulations, we found that the collective inclusion of Exx and vdW as resulting from a large-scale AIMD simulation of (H 2O)128 significantly softens the structure of ambient liquid water and yields an oxygen-oxygen structure factor, SOO(Q), and corresponding oxygen-oxygen radial distribution function, gOO(r), that are now in quantitative agreement with the best available experimental data. This level of agreement between simulation and experiment demonstrated herein originates from an increase in the relative population of water molecules in the interstitial region between the first and second coordination shells, a collective reorganization in the liquid phase which is facilitated by a weakening of the hydrogen bond strength by the use of a hybrid XC functional, coupled with a relative stabilization of the resultant disordered liquid water configurations by the inclusion of non-local vdW/dispersion interactions. This increasingly more accurate description of the underlying hydrogen bond network in liquid water also yields higher-order correlation functions, such as the oxygen-oxygen-oxygen triplet angular distribution, POOO(θ), and therefore the degree of local tetrahedrality, as well as electrostatic properties, such as the effective molecular dipole moment, that are in much better agreement with experiment. © 2014 AIP Publishing LLC.