cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Self-supervised 3D anatomy segmentation using self-distilled masked image transformer (SMIT)
Creators: name: Jiang, Jue
name: Tyagi, Neelam
name: Tringale, Kathryn
name: Crane, Christopher
name: Veeraraghavan, Harini
Publisher: name: arXiv
Year: 2022
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Vision transformers, with their ability to more efficiently model long-range context, have demonstrated impressive accuracy gains in several computer vision and medical image analysis tasks including segmentation. However, such methods need large labeled datasets for training, which is hard to obtain for medical image analysis. Self-supervised learning (SSL) has demonstrated success in medical image segmentation using convolutional networks. In this work, we developed a \underline{s}elf-distillation learning with \underline{m}asked \underline{i}mage modeling method to perform SSL for vision \underline{t}ransformers (SMIT) applied to 3D multi-organ segmentation from CT and MRI. Our contribution is a dense pixel-wise regression within masked patches called masked image prediction, which we combined with masked patch token distillation as pretext task to pre-train vision transformers. We show our approach is more accurate and requires fewer fine tuning datasets than other pretext tasks. Unlike prior medical image methods, which typically used image sets arising from disease sites and imaging modalities corresponding to the target tasks, we used 3,643 CT scans (602,708 images) arising from head and neck, lung, and kidney cancers as well as COVID-19 for pre-training and applied it to abdominal organs segmentation from MRI pancreatic cancer patients as well as publicly available 13 different abdominal organs segmentation from CT. Our method showed clear accuracy improvement (average DSC of 0.875 from MRI and 0.878 from CT) with reduced requirement for fine-tuning datasets over commonly used pretext tasks. Extensive comparisons against multiple current SSL methods were done. Code will be made available upon acceptance for publication.
description: This paper has been early accepted by MICCAI 2022
title: Addiction et anxiété
title: atteindre une meilleure qualité de vie
titleType: Subtitle
Creators: name: Lemoine, Lorraine
name: Penedo, Romina
Publisher: name: Unknown
Year: 0
Subjects: subject: Addiction
subject: Dépendance
subject: Intervention infirmière
subject: Qualité de vie

description: Ce travail s'intéresse à la gestion de l'anxiété chez les patients souffrant d'addiction à une substance psychoactive. En raison des nombreux facteurs anxiogènes présents dans la problématique addictive, ce symptôme est fréquent chez cette population et peut impacter la qualité de vie. Dans les structures ambulatoires à bas-seuil, l'infirmière a pour rôle, entre autre, d'améliorer la qualité de vie des usagers et possède un rôle central dans le suivi des problématiques de vie. Dans la pratique, l'anxiété semble être peu considérée et les moyens pour y faire face sont parfois limités aux stratégies pharmacologiques, ce qui peut engendrer une nouvelle addiction. De ce fait, notre question de recherche retenue est : Quelles sont les interventions non médicamenteuses que l’infirmière peut proposer pour aider le patient addicte à une substance à gérer son anxiété, dans le but d’améliorer sa qualité de vie ?
The complex heavy-quark potential in an anisotropic quark-gluon plasma -- Statics and dynamics
Creators: name: Dong, Lihua
name: Guo, Yun
name: Islam, Ajaharul
name: Rothkopf, Alexander
name: Strickland, Michael
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We generalize a complex heavy-quark potential model from an isotropic QCD plasma to an anisotropic one by replacing the Debye mass $m_D$ with an anisotropic screening mass depending on the quark pair alignment with respect to the direction of anisotropy. Such an angle-dependent mass is determined by matching the perturbative contributions in the potential model to the exact result obtained in the Hard-Thermal-Loop resummed perturbation theory. An advantage of the resulting potential model is that its angular dependence can be effectively described by using a set of angle-averaged screening masses as proposed in our previous work. Consequently, one could solve a one-dimensional Schrödinger equation with a potential model built by changing the anisotropic screening masses into the corresponding angle-averaged ones, and reproduce the full three-dimensional results for the binding energies and decay widths of low-lying quarkonium bound states to very high accuracy. Finally, turning to dynamics, we demonstrate that the one-dimensional effective potential can accurately describe the time evolution of the vacuum overlaps obtained using the full three-dimensional anisotropic potential. This includes the splitting of different p-wave polarizations.
description: final version published in JHEP
title: Le confort de la personne âgée démente hospitalisée
title: un nouveau défi pour l'infirmière en soins aigus
titleType: Subtitle
Creators: name: Laurent, Ludovic
name: Wegmüller, Aurélie
Publisher: name: Unknown
Year: 0
Subjects: subject: Démence
subject: Hospitalisation
subject: Personne âgée

description: Ce travail est une revue de littérature non exhaustive dans laquelle nous nous intéressons aux meilleures pratiques de prises en soins de la personne âgée démente hospitalisée. Avec l’évolution démographique, la modification de la pyramide des âges et l’accroissement des sujets âgés hospitalisés, la complexité des besoins en soins de cette population se voit augmentée et engendre une demande de modification des structures organisationnels et environnementales des milieux de soins aigus. Les études qui portaient un regard à la fois sur les soignants et les patients, nous ont permis de faire ressortir des résultats pouvant être analysés à la lumière de la théorie du Confort de Kolcaba. L’intimité, l’éthique et l’environnement sont des dimensions primordiales à prendre en compte lors d’une prise en soin hospitalière de patient dément.
Magnetization dynamics with time-dependent spin-density functional theory: significance of exchange-correlation torques
Creators: name: Hill, Daniel
name: Shotton, Justin
name: Ullrich, Carsten A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In spin-density-functional theory (SDFT) for noncollinear magnetic materials, the Kohn-Sham system features exchange-correlation (xc) scalar potentials and magnetic fields. The significance of the xc magnetic fields is not very well explored; in particular, they can give rise to local torques on the magnetization, which are absent in standard local and semilocal approximations. Exact benchmark solutions for a five-site extended Hubbard lattice at half filling and in the presence of spin-orbit coupling are compared with SDFT results obtained using orbital-dependent exchange-only approximations. The magnetization dynamics following short-pulse excitations is found to be reasonably well described in the exchange-only approximation for weak to moderate interactions. For stronger interactions and near transitions between magnetically ordered and frustrated phases, exchange and correlation torques tend to compensate each other and must both be accounted for.
description: 9 pages, 6 figures
Image of Bonnor black dihole with a thin accretion disk and its polarization information
Creators: name: Zhang, Zelin
name: Chen, Songbai
name: Jing, Jiliang
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have studied the image of Bonnor black dihole surrounded by a thin accretion disk where the electromagnetic emission is assumed to be dominated respectively by black body radiation and synchrotron radiation. Our results show that the intensity of Bonnor black dihole image increases with the magnetic parameter and the inclination angle in both radiation models. The image of Bonnor black dihole in the synchrotron radiation model is one order of magnitude brighter than that in the black body radiation model, but its intensity in the former decreases more rapidly with the radial coordinate. Especially, for the synchrotron radiation model, the intensity of the secondary image is stronger than that of the direct image at certain an inclination angle. We also present the polarization patterns for the images of Bonnor black dihole arising from the synchrotron radiation, which depend sharply on the magnetic parameter and inclination angle. Finally, we make a comparison between the polarimetric images of Bonnor black dihole and M87*. Our result further confirms that the image of black hole depends on the black hole's properties itself, the matter around black hole and the corresponding radiation occurred in the accretion disk.
description: 18 pages, 11 figures, matched with the EPJC published version
The molecular clock of neutral evolution can be accelerated or slowed by asymmetric spatial structure
Creators: name: Allen, Benjamin
name: Sample, Christine
name: Dementieva, Yulia A.
name: Medeiros, Ruben C.
name: Paoletti, Christopher
name: Nowak, Martin A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences
subject: 92D15

description: Over time, a population acquires neutral genetic substitutions as a consequence of random drift. A famous result in population genetics asserts that the rate, $K$, at which these substitutions accumulate in the population coincides with the mutation rate, $u$, at which they arise in individuals: $K=u$. This identity enables genetic sequence data to be used as a "molecular clock" to estimate the timing of evolutionary events. While the molecular clock is known to be perturbed by selection, it is thought that $K=u$ holds very generally for neutral evolution. Here we show that asymmetric spatial population structure can alter the molecular clock rate for neutral mutations, leading to either $Ku$. Deviations from $K=u$ occur because mutations arise unequally at different sites and have different probabilities of fixation depending on where they arise. If birth rates are uniform across sites, then $K \leq u$. In general, $K$ can take any value between 0 and $Nu$. Our model can be applied to a variety of population structures. In one example, we investigate the accumulation of genetic mutations in the small intestine. In another application, we analyze over 900 Twitter networks to study the effect of network topology on the fixation of neutral innovations in social evolution.
description: 31 pages, 9 figures
Cyclin D and cdk4 Are Required for Normal Development beyond the Blastula Stage in Sea Urchin Embryos
Creators: name: Schnackenberg, B. J.
name: Wessel, G. M.
name: Nichols, J. A.
name: Marzluff, W. F.
name: Sumerel, J. L.
name: Wikramanayake, A.
name: Moore, J. C.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2002

description: cdk4 mRNA and protein are constitutively expressed in sea urchin eggs and throughout embryonic development. In contrast, cyclin D mRNA is barely detectable in eggs and early embryos, when the cell cycles consist of alternating S and M phases. Cyclin D mRNA increases dramatically in embryos at the early blastula stage and remains at a constant level throughout embryogenesis. An increase in cdk4 kinase activity occurs concomitantly with the increase in cyclin D mRNA. Ectopic expression of cyclin D mRNA in eggs arrests development before the 16-cell stage and causes eventual embryonic death, suggesting that activation of cyclin D/cdk4 in cleavage cell cycles is lethal to the embryo. In contrast, blocking cyclin D or cdk4 expression with morpholino antisense oligonucleotides results in normal development of early gastrula-stage embryos but abnormal, asymmetric larvae. These results suggest that in sea urchins, cyclin D and cdk4 are required for normal development and perhaps the patterning of the developing embryo, but may not be directly involved in regulating entry into the cell cycle.
Origin of Quasi-Periodic Pulsation at the Base of Kink Unstable Jet
Creators: name: Mishra, Sudheer K.
name: Sangal, Kartika
name: Kayshap, Pradeep
name: Jelinek, Petr
name: Srivastava, A. K.
name: Rajaguru, S. P.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We study a blowout jet that occurs at the west limb of the Sun on August 29$^{th}$, 2014 using high-resolution imaging/spectroscopic observations provided by SDO/AIA and IRIS. An inverse $γ$-shape flux-rope appears before the jet{--} morphological indication of the onset of kink instability. The twisted field lines of kink-unstable flux-rope reconnect at its bright knot and launch the blowout jet at $\approx$06:30:43 UT with an average speed of 234 km s$^{-1}$. Just after the launch, the northern leg of the flux rope erupts completely. The time-distance diagrams show multiple spikes or bright dots, which is the result of periodic fluctuations, i.e., quasi-periodic fluctuations (QPPs). The wavelet analysis confirms that QPPs have a dominant period of $\approx$ 03 minutes. IRIS spectra (Si~{\sc iv}, C~{\sc ii}, and Mg~{\sc ii}) may also indicate the occurrence of magnetic reconnection through existence of broad $\&$ complex profiles and bi-directional flows in the jet. Further, we have found that line broadening is periodic with a period of $\approx$ 03 minutes, and plasma upflow is always occurs when the line width is high, i.e., multiple reconnection may produce periodic line broadening. The EM curves also show the same period of $\approx$ 03 minutes in different temperature bins. The images and EM show that this jets spire is mainly cool (chromospheric/transition region) rather than hot (coronal) material. Further, line broadening, intensity, and EM curves have a period of $\approx$03 minutes, which strongly supports that multiple magnetic reconnection triggers QPPs in the blowout jet.
description: The Astrophysical Journal (In press), 25 pages, 12 figures
Compétences culturelles des soignants et bien-être des personnes âgées issues de l'immigration, en établissement médico-social (EMS)
Creators: name: Tshibamba, Chantal
name: Kami, Pamela
name: Lecoeur, Presilia
Publisher: name: Unknown
Year: 0
Subjects: subject: Migrant
subject: Soins infirmiers interculturels

description: Les résidents immigrés ont des besoins spécifiques souvent en lien avec leur culture. Les professionnels de la santé doivent anticiper leur arrivée afin de s’assurer qu’ils trouvent un bien-être dans leur nouvel environnement. Cette revue de littérature a pour but de mettre en évidence l’importance des compétences culturelles du personnel soignant et de souligner l’impact de ces connaissances sur le bien-être des personnes âgées immigrées en EMS.
Synthesis of Eco-Friendly Additives for Sustainable Tanning Processes
Creators: name: Quaratesi, Ilaria
Publisher: name: Universita degli studi di Salerno
Year: 2022
Subjects: subject: CHIM/06 CHIMICA ORGANICA

description: 2020 - 2021
description: Sustainability is a global level challenge for tanning industry whose production is based on Cr(III) salts for more than 90%, negatively impacting both biotic and abiotic factors in an ecosystem. Societal challenges are strongly pushing tanning industry to develop a more sustainable leather value chain. In fact, over the past 100 years, a lot of synthetic tannins have been developed for trying to replace chrome and to make the process more sustainable.1 An alternative tanning system, in fact, should not only satisfy environmental criteria, but should be also able to match the properties of chrome tanned leathers.2 For this reason, the wet white tanning process seems, nowadays, the only alternative to develop a less polluting process obtaining high quality products. In this respect, many efforts have been focused on the design of new environmental friendly and high-performance tanning products for industrial applications. This industrial PhD project has been developed in collaboration with the BI- QEM SPECIALTIES S.P.A., Leather and Footwear Research Institute (ICPI), Politehnica University of Bucharest, and FGL International S.P.A. In the first phase of this PhD project, a new supramolecular system based on bisphenol S and β-cyclodextrin was synthesized and used as a tanning agent and as an eco-friendlier and sustainable alternative to tannins currently on the market. Firstly, we investigated the formation of the supramolecular system, using 1D and 2D NMR, FT-IR, and high-resolution mass spectrometry and we studied the different interaction between β- cyclodextrin and the two isomers of bisphenol S. Secondly, we tested the obtained systems on raw hide to evaluate their efficiency in the tanning process on both a laboratory and pilot scale, in collaboration with FGL International S.P.A. In the project phase carried out at the Leather and Footwear Research Institute (ICPI), Bucharest, under the supervision of Dr. Elena Badea, the goal was to obtain a fully eco-sustainable re-tanning agent from sodium alginate, a biodegradable, renewable biomass, using the ultrasonic technology. The efficacy of the obtained sodium alginate products (SAD) was evaluated by micro-differential scanning calorimetry (micro-DSC)3 and attenuated total reflection mode infrared spectroscopy (FTIR-ATR). 4 The results so far obtained have confirmed the suitability of the various SADs as non-toxic and biodegradable re-tanning agents. [edited by Author]
Demonstration of static atomic gravimetry using Kalman filter
Creators: name: Jiang, Bo-Nan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The measurement precision of the static atomic gravimetry is limited by white Gaussian noise in short term, which costs previous works an inevitable integration to reach the precision demanded. Here, we propose a statistical model based on the quantum projection noise and apply the Kalman filter to the waveform estimation in static atomic gravimetry. With the white Gaussian noise significantly removed by the the Kalman-filter formalism, the measurement noise of the gravimetry is reshaped in short term and shows $τ^{1/2}$ feature that corresponds to random walk. During 200 hours of static measurement of gravity, the atomic gravimeter using Kalman filter demonstrates a sensitivity as good as 0.6 $\rm{nm/s^2}/\sqrt{\rm{s}}$, and highlights a precision of 1.7 $\rm{nm/s^2}$ at the measuring time of a single sample. The measurement noise achieved is also lower than the quantum projection limit below $\sim$ 30 s.
Astronomical Receiver Modelling Using Scattering Matrices
Creators: name: King, O. G.
name: Jones, Michael E.
name: Copley, C.
name: Davis, R. J.
name: Leahy, J. P.
name: Leech, J.
name: Muchovej, S. J. C.
name: Pearson, T. J.
name: Taylor, Angela C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Proper modelling of astronomical receivers is vital: it describes the systematic errors in the raw data, guides the receiver design process, and assists data calibration. In this paper we describe a method of analytically modelling the full signal and noise behaviour of arbitrarily complex radio receivers. We use electrical scattering matrices to describe the signal behaviour of individual components in the receiver, and noise correlation matrices to describe their noise behaviour. These are combined to produce the full receiver model. We apply this approach to a specified receiver architecture: a hybrid of a continous comparison radiometer and correlation polarimeter designed for the C-Band All-Sky Survey. We produce analytic descriptions of the receiver Mueller matrix and noise temperature, and discuss how imperfections in crucial components affect the raw data. Many of the conclusions drawn are generally applicable to correlation polarimeters and continuous comparison radiometers.
description: 18 pages, 8 figures, accepted for publication in MNRAS
Vorzeitige Laubverfärbung und Blattfall bei Rotbuchen 2009; Waldschutzinfo Nr. 08 / 2009
Creators: name: Langer, Gitta Jutta
name: Bressem, Ulrich
name: Habermann, Michael
Publisher: name: Zenodo
Year: 2023
Subjects: Fagus sylvatica; Buche

description: Die vorzeitigen Laubverfärbungen an Rotbuchen und der an vielen Bäumen bereits jetzt einsetzende Laubfall werden verstärkt seit etwa Anfang August in unterschiedlichen Gebieten Hessens, Niedersachsens und Sachsen-Anhalts beobachtet. Die Laubverfärbung hat Mitte August stark zugenommen. Besonders betroffen sind Randbuchen und solche, die frei stehen oder vorherrschend sind und mit der Oberkrone aus dem Kronendach herausragen. In der Regel tragen diese Bäume auch einen sehr starken Fruchtanhang (90% gesunde Eckern). Mittlerweile erfasst die Blattverfärbung in manchen Gebieten auch ganze Bestände.
Rota-Baxter operators on the polynomial algebras, integration and averaging operators
Creators: name: Guo, Li
name: Rosenkranz, Markus
name: Zheng, Shanghua
Publisher: name: arXiv
Year: 2014
Subjects: subject: Rings and Algebras (math.RA)
subject: Commutative Algebra (math.AC)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 16W99, 45N05, 47G10, 12H20

description: Rota-Baxter operators are an algebraic abstraction of integration. Following this classical connection, we study the relationship between Rota-Baxter operators and integrals in the case of the polynomial algebra $\mathbf{k}[x]$. We consider two classes of Rota-Baxter operators, monomial ones and injective ones. For the first class, we apply averaging operators to determine monomial Rota-Baxter operators. For the second class, we make use of the double product on Rota-Baxter algebras.
description: 20 pages
Developmental Control of Histone mRNA and dSLBP Synthesis during Drosophila Embryogenesis and the Role of dSLBP in Histone mRNA 3' End Processing In Vivo
Creators: name: Marzluff, W. F.
name: Kaygun, H.
name: Duronio, R. J.
name: Lanzotti, D. J.
name: Yang, X.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2002

description: In metazoans, the 3′ end of histone mRNA is not polyadenylated but instead ends with a stem-loop structure that is required for cell cycle-regulated expression. The sequence of the stem-loop in the Drosophila melanogaster histone H2b, H3, and H4 genes is identical to the consensus sequence of other metazoan histone mRNAs, but the sequence of the stem-loop in the D. melanogaster histone H2a and H1 genes is novel. dSLBP binds to these novel stem-loop sequences as well as the canonical stem-loop with similar affinity. Eggs derived from females containing a viable, hypomorphic mutation in dSLBP store greatly reduced amounts of all five histone mRNAs in the egg, indicating that dSLBP is required in the maternal germ line for production of each histone mRNA. Embryos deficient in zygotic dSLBP function accumulate poly(A)+ versions of all five histone mRNAs as a result of usage of polyadenylation signals located 3′ of the stem-loop in each histone gene. Since the 3′ ends of adjacent histone genes are close together, these polyadenylation signals may ensure the termination of transcription in order to prevent read-through into the next gene, which could possibly disrupt transcription or produce antisense histone mRNA that might trigger RNA interference. During early wild-type embryogenesis, ubiquitous zygotic histone gene transcription is activated at the end of the syncytial nuclear cycles during S phase of cycle 14, silenced during the subsequent G2 phase, and then reactivated near the end of that G2 phase in the well-described mitotic domain pattern. There is little or no dSLBP protein provided maternally in wild-type embryos, and zygotic expression of dSLBP is immediately required to process newly made histone pre-mRNA.
Interventions infirmières postnatales dans l’accompagnement des familles touchées par le déni de grossesse et préparation à un retour à domicile sécuritaire
Creators: name: Gonin, Anaelle
name: Lorenz, Gabrielle
Publisher: name: Unknown
Year: 0
Subjects: subject: Grossesse
subject: Déni
subject: Périnatalité
subject: Relation soignant-soigné

description: En élaborant cette revue de littérature, nous désirons répondre à la problématique suivante : “Quelles sont les interventions postnatales spécifiques à envisager pour optimiser l’accompagnement des parturientes, qui ont vécu un déni de grossesse, afin de favoriser le lien d’attachement mère-enfant et de les préparer à vivre leur retour à domicile de manière sécuritaire ?”. Nous explorons les différents concepts théoriques se reliant à notre question de recherche dans le but de considérer l’ensemble des enjeux présents dans cette problématique.A la suite de l’analyse et de la comparaison des résultats des huit articles scientifiques, il a été possible de mettre en évidence six thèmes principaux évoqués dans la plupart des écrits : formations spécialisées, stigmatisations du déni de grossesse, importance de l’interdisciplinarité, rôle infirmier dans l’accompagnement des parents dans leur transition, rôle infirmier dans la promotion du lien d’attachement et enfin, enjeu du retour à domicile. Dans cette discussion, nous avons exposé plusieurs pistes d’interventions et recommandations pour la pratique dans le but d’améliorer l’accompagnement de la famille lors du retour à domicile.
Identification and Functional Characterization of the p66/p68 Components of the MeCP1 Complex
Creators: name: Erdjument-Bromage, H.
name: Tempst, P.
name: Cao, R.
name: Xia, L.
name: Zhang, Y.
name: Feng, Q.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2002

description: Methylation of cytosine at CpG dinucleotides is a common feature of many higher eukaryotic genomes. A major biological consequence of DNA methylation is gene silencing. Increasing evidence indicates that recruitment of histone deacetylase complexes by methyl-CpG-binding proteins is a major mechanism of methylated DNA silencing. We have previously reported that the MeCP1 protein complex represses transcription through preferential binding, remodeling, and deacetylation of methylated nucleosomes. To understand the molecular mechanism of the functioning of the MeCP1 complex, the individual components of the MeCP1 complex need to be characterized. In this paper, we report the identification and functional characterization of the p66 and p68 components of the MeCP1 complex. We provide evidence that the two components are different forms of the same zinc finger-containing protein. Analysis of the p66 homologs from different organisms revealed two highly conserved regions, CR1 and CR2. While CR1 is involved in the association of p66 with other MeCP1 components, CR2 plays an important role in targeting p66 and MBD3 to specific loci. Thus, our study not only completes the identification of the MeCP1 components but also reveals the potential function of p66 in MeCP1 complex targeting. The identification and characterization of all the MeCP1 components set the stage for reconstitution of the MeCP1 complex.
Sustaining Rabi oscillations by using a phase-tunable image drive
Creators: name: De Raedt, H.
name: Miyashita, S.
name: Michielsen, K.
name: Vezin, H.
name: Bertaina, S.
name: Chiorescu, I.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recent electron spin resonance experiments on CaWO$_4$:Gd$^{3+}$ and on other magnetic impurities have demonstrated that sustained Rabi oscillations can be created by driving a magnetic moment with a microwave field frequency slightly larger than the Larmor frequency and tuned to the Floquet resonance together with another microwave field (image drive). These observations are confirmed by the new experimental results reported in this paper. We investigate several mechanisms of decoherence and dissipation by using a combination of numerical and analytical techniques. The first microscopic model describes a magnetic moment in external magnetic fields, interacting with a bath of two-level systems acting as a source of decoherence and dissipation. The second model describes a collection of the identical, interacting magnetics moments, all subject to the same magnetic fields. In this case, the many-body interactions causes a decay of the Rabi oscillations. In addition, we also study the effect of the inhomogeneity of the microwave radiation on the decay of the Rabi oscillations. Our simulation results show that the dynamics of a magnetic moment subject to the two microwave fields with different frequencies and in contact with an environment is highly nontrivial. We show that under appropriate conditions, and in particular at the Floquet resonance, the magnetization exhibits sustained Rabi oscillations, in some cases with additional beatings. Although these two microscopic models separately describe the experimental data well, a simulation study that simultaneously accounts for both types of interactions is currently prohibitively costly. To gain further insight into the microscopic dynamics of these two different models, we study the time dependence of the bath and system energy and of the correlations of the spins, data that is not readily accessible experimentally.
Constructing CFTs from AdS flows
Creators: name: Fröb, Markus B.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the renormalization group flow equations for correlation functions of weakly coupled quantum field theories in AdS. Taking the limit where the external points approach the conformal boundary, we obtain a flow of conformally invariant correlation functions. We solve the flow for one- and two-point functions and show that the corrections to the conformal dimensions can be obtained as an integral over the Mellin amplitude of the four-point function. We also derive the flow of the Mellin amplitude for higher $n$-point functions. We then consider the flows at tree level and one loop (in AdS), and show that one obtains exactly the recursion relations for the corresponding Mellin amplitudes derived earlier by Fitzpatrick et al. [arXiv:1107.1499] at tree level and Yuan [arXiv:1710.01361,arXiv:1801.07283] at one loop. As an application, we furthermore compute one-loop corrections to the conformal dimensions for some operators in the CFT dual to an $\mathrm{O}(N)$ scalar model in AdS.
description: 66 pages, 6 figures. Matches published version
I-mfa Domain Proteins Interact with Axin and Affect Its Regulation of the Wnt and c-Jun N-Terminal Kinase Signaling Pathways
Creators: name: Raab-Traub, N.
name: Kusano, S.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2002

description: I-mfa has been identified as an inhibitor of myogenic basic helix-loop-helix transcription factors, and a related human I-mfa domain-containing protein (HIC) also has been identified as a protein that regulates Tat- and Tax-mediated expression of viral promoters. HIC and I-mfa represent a family of proteins that share a highly conserved cysteine-rich domain, termed the I-mfa domain. We show here that both I-mfa domain proteins, HIC and I-mfa, interacted in vivo with the Axin complex through their C-terminal I-mfa domains. This interaction inhibited Axin-mediated downregulation of free levels of cytosolic β-catenin. I-mfa and HIC also both directly interacted with lymphocyte enhancer factor (LEF); however, I-mfa but not HIC significantly inhibited reporter constructs regulated by β-catenin. The overexpression of HIC but not I-mfa decreased the inhibitory effects of Axin on β-catenin-regulated reporter constructs, while both HIC and I-mfa decreased Axin-mediated c-Jun N-terminal kinase (JNK) activation. These data reveal for the first time that I-mfa domain proteins interact with the Axin complex and affect Axin regulation of both the Wnt and the JNK activation pathways. Interestingly, HIC differs from I-mfa in that I-mfa affects both Axin function and T-cell factor- or LEF-regulated transcription in the Wnt signaling pathway while HIC affects primarily Axin function.
Super-Resolution Imaging with Multiparameter Quantum Metrology in Passive Remote Sensing
Creators: name: Köse, Emre
name: Braun, Daniel
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We study super-resolution imaging theoretically using a distant n-mode interferometer in the microwave regime for passive remote sensing, used e.g., for satellites like the "soil moisture and ocean salinity (SMOS)" mission to observe the surface of the Earth. We give a complete quantum mechanical analysis of multiparameter estimation of the temperatures on the source plane. We find the optimal detection modes by combining incoming modes with an optimized unitary that enables the most informative measurement based on photon counting in the detection modes and saturates the quantum Cramér-Rao bound from the symmetric logarithmic derivative for the parameter set of temperatures. In our numerical analysis, we achieved a quantum-enhanced super-resolution by reconstructing an image using the maximum likelihood estimator with a pixel size of 3 km, which is ten times smaller than the spatial resolution of SMOS with comparable parameters. Further, we find the optimized unitary for uniform temperature distribution on the source plane, with the temperatures corresponding to the average temperatures of the image. Even though the corresponding unitary was not optimized for the specific image, it still gives a super-resolution compared to local measurement scenarios for the theoretically possible maximum number of measurements.
Entanglement of helicity and energy in kinetic Alfven wave/whistler turbulence
Creators: name: Galtier, S.
name: Meyrand, R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The role of magnetic helicity is investigated in kinetic Alfvén wave and oblique whistler turbulence in presence of a relatively intense external magnetic field $b_0 {\bf e_\parallel}$. In this situation, turbulence is strongly anisotropic and the fluid equations describing both regimes are the reduced electron magnetohydrodynamics (REMHD) whose derivation, originally made from the gyrokinetic theory, is also obtained here from compressible Hall MHD. We use the asymptotic equations derived by Galtier \& Bhattacharjee (2003) to study the REMHD dynamics in the weak turbulence regime. The analysis is focused on the magnetic helicity equation for which we obtain the exact solutions: they correspond to the entanglement relation, $n+\tilde n = -6$, where $n$ and $\tilde n$ are the power law indices of the perpendicular (to ${\bf b_0}$) wave number magnetic energy and helicity spectra respectively. Therefore, the spectra derived in the past from the energy equation only, namely $n=-2.5$ and $\tilde n = - 3.5$, are not the unique solutions to this problem but rather characterize the direct energy cascade. The solution $\tilde n = -3$ is a limit imposed by the locality condition; it is also the constant helicity flux solution obtained heuristically. The results obtained offer a new paradigm to understand solar wind turbulence at sub-ion scales where it is often observed that $-3 < n < -2.5$.
description: 26 pages, submitted to the special issue of JPP "Present achievements and new frontiers in space plasmas"
title: La souffrance émotionnelle de la personne âgée en établissement médico-social
title: une approche infirmière soutenue par le modèle d'adaptation de Callisat Roy
titleType: Subtitle
Creators: name: Tumurbaatar, Jargal
name: Machado, Tania Ferreira
Publisher: name: Unknown
Year: 0
Subjects: subject: Personne âgée
subject: Etablissement médico-social
subject: Autonomie
subject: Psychologie
subject: Dignité

description: Cette revue de littérature porte sur l’expérience de vie des personnes âgées de 65 ans et plus vivant dans les établissements de soins de longue durée et présentant une souffrance psychologique. Cette souffrance émotionnelle chez les personnes âgées est un problème récurent qui est souvent négligé par la société moderne. Les enjeux sont liés au vieillissement de la population et à la demande croissante de soins résidentiels médicalisés. Les infirmières et infirmiers qui se trouvent en première ligne pour gérer ce phénomène ont un rôle primordial dans l’accompagnement aux aînées afin que ceux-ci s’adaptent à la vie en institution. Le rôle des professionnels est aussi de leur offrir une qualité de vie optimale dans cette étape de leur existence qui est marquée par les pertes et les déclins. Pour tenter de comprendre ce phénomène et de trouver des interventions qui puissent aider les professionnels à accompagner l’adulte d’âge avancé dans cette étape de sa vie, nous avons posé la question de recherche suivante : « Chez la personne âgée vivant en établissement médico-social, présentant une souffrance émotionnelle, quels soins infirmiers centrés sur le patient permettraient d’instaurer des comportements de haute adaptation ?». Les principaux résultats obtenus soulignent l’importance de favoriser l’autonomie du patient, d’avoir une attitude professionnelle respectueuse et d’être à l’écoute, car la façon dont le soignant traite le résident à un impact sur la dignité de celui-ci.
Fast Dynamic Radiance Fields with Time-Aware Neural Voxels
Creators: name: Fang, Jiemin
name: Yi, Taoran
name: Wang, Xinggang
name: Xie, Lingxi
name: Zhang, Xiaopeng
name: Liu, Wenyu
name: Nießner, Matthias
name: Tian, Qi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Graphics (cs.GR)
subject: FOS: Computer and information sciences

description: Neural radiance fields (NeRF) have shown great success in modeling 3D scenes and synthesizing novel-view images. However, most previous NeRF methods take much time to optimize one single scene. Explicit data structures, e.g. voxel features, show great potential to accelerate the training process. However, voxel features face two big challenges to be applied to dynamic scenes, i.e. modeling temporal information and capturing different scales of point motions. We propose a radiance field framework by representing scenes with time-aware voxel features, named as TiNeuVox. A tiny coordinate deformation network is introduced to model coarse motion trajectories and temporal information is further enhanced in the radiance network. A multi-distance interpolation method is proposed and applied on voxel features to model both small and large motions. Our framework significantly accelerates the optimization of dynamic radiance fields while maintaining high rendering quality. Empirical evaluation is performed on both synthetic and real scenes. Our TiNeuVox completes training with only 8 minutes and 8-MB storage cost while showing similar or even better rendering performance than previous dynamic NeRF methods.
description: SIGGRAPH Asia 2022. Project page: https://jaminfong.cn/tineuvox
Leukemia-Associated Rho Guanine Nucleotide Exchange Factor Promotes G q-Coupled Activation of RhoA
Creators: name: Der, C. J.
name: Booden, M. A.
name: Siderovski, D. P.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2002

description: Leukemia-associated Rho guanine-nucleotide exchange factor (LARG) belongs to the subfamily of Dbl homology RhoGEF proteins (including p115 RhoGEF and PDZ-RhoGEF) that possess amino-terminal regulator of G protein signaling (RGS) boxes also found within GTPase-accelerating proteins (GAPs) for heterotrimeric G protein α subunits. p115 RhoGEF stimulates the intrinsic GTP hydrolysis activity of Gα12/13 subunits and acts as an effector for G13-coupled receptors by linking receptor activation to RhoA activation. The presence of RGS box and Dbl homology domains within LARG suggests this protein may also function as a GAP toward specific Gα subunits and couple Gα activation to RhoA-mediating signaling pathways. Unlike the RGS box of p115 RhoGEF, the RGS box of LARG interacts not only with Gα12 and Gα13 but also with Gαq. In cellular coimmunoprecipitation studies, the LARG RGS box formed stable complexes with the transition state mimetic forms of Gαq, Gα12, and Gα13. Expression of the LARG RGS box diminished the transforming activity of oncogenic G protein-coupled receptors (Mas, G2A, and m1-muscarinic cholinergic) coupled to Gαq and Gα13. Activated Gαq, as well as Gα12 and Gα13, cooperated with LARG and caused synergistic activation of RhoA, suggesting that all three Gα subunits stimulate LARG-mediated activation of RhoA. Our findings suggest that the RhoA exchange factor LARG, unlike the related p115 RhoGEF and PDZ-RhoGEF proteins, can serve as an effector for Gq-coupled receptors, mediating their functional linkage to RhoA-dependent signaling pathways.
Multiferroicity and magneto-electric effect in Gd$_2$BaNiO$_5$
Creators: name: Chowki, S.
name: Basu, Tathamay
name: Singh, K.
name: Mohapatra, N.
name: Sampathkumaran, E. V.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report the observation of electric polarization in the magnetically ordered state of the Haldane chain compound, Gd$_2$BaNiO$_5$, with strongly correlated magnetic and dielectric properties. The results of dc magnetic susceptibility and heat capacity measurements indicate two magnetic transitions,one corresponding to the anti-ferromagnetic order at T$_N$ around 55 K and the other to spin-reorientation transition at T$_{SR}$ around 24 K. The dielectric permittivity ($ε'$) and loss (tan$δ$) also exhibit anomalies in the vicinity of T$_{SR}$ and T$_N$ respectively. Below the spin-reorientation transition, concurrently magnetic-field-induced spin-flop and the meta-electric transitions are observed at a critical magnetic field in isothermal magnetization and magneto-dielectric results respectively. Another interesting finding is that the change in dielectric constant changes its sign at the critical magnetic field. The origin of the observed magneto-electric effect is discussed on the basis of spin-phonon coupling.
description: published in JAP
title: Les Requérants d’asile dans les soins infirmiers en Suisse
title: Comment améliorer la prise en soins infirmière des requérants d’asile au sein des services hospitaliers?
titleType: Subtitle
Creators: name: Murseli, Teuta
name: Ferreria Lopes, Liliana
Publisher: name: Unknown
Year: 0
Subjects: subject: Migrant
subject: Soins infirmiers interculturels

description: Depuis l’été 2015, l’augmentation du flux migratoire et du nombre de requérants d’asile sont très médiatisés. Les requérants d’asile sont des étrangers qui migrent contre leur volonté. En danger dans leur pays de résidence, ils déposent une demande d’asile dans un autre pays. Si celle-ci est accordé, le requérant d’asile devient un réfugié. Le domaine de la santé reconnaît la vulnérabilité de cette population surtout au niveau psychiatrique et somatique. Peu de temps après leur arrivée, les requérants sont pris en charge par le Réseau de santé et migration. Couverts par l’assurance maladie de base, ils ont le droit aux mêmes prestations que la population résidente. Cependant, en milieu hospitalier, l’infirmière manque parfois de ressources pour leur offrir des soins équitables. Le but de ce travail de Bachelor est d’amener des recommandations qui aideraient les professionnels à fournir des prestations de qualité à cette population. Les résultats démontrent que l’infirmière a besoin de compétences culturelles pour prendre en charge efficacement les requérants. Pour guider son projet de soins, elle peut utiliser un modèle transculturel, comme celui de Quickfall abordé dans notre travail. De nombreuses interventions culturellement congruentes sont possibles. Parmi elles, nous pouvons citer le recourt à des interprètes, le respect de la concordance des genres entre soignant et soigné, l’adoption d’une attitude respectueuse de la part du soignant et l’augmentation de la durée du soin.
title: Sound Absorption in N2-H2O Gas Mixtures at Elevated Temperatures
Creators: name: Meredith, Roger W.
Publisher: name: Old Dominion University Libraries
Year: 1980

description: Sound absorption measurements were conducted in N2 -H2O gas mixtures at 297, 343, and 387 Kelvin to determine the location of the vibrational relaxation peak of nitrogen on the frequency/pressure, (f/P), axis as a function of humidity and temperature. At low humidities the best fit of the data is to a linear relationship between (f/P)max and humidity (h) yields a slope of 1 .84 X 104 Hz/ atm mole fraction at all three temperatures. The slope is the same as that reported by Zuckerwar and Griffin (2.00 X 104 Hz/atm mole fraction) but is lower than the value (2.6 X 104 Hz/atm mole fraction) reported by Chang, Shields, and Bass at higher humidities. These sets of data are shown to be mutually' consistent by means of a model in which vibration-vibration transfer is assumed to provide the dominant relaxation path. The results of this work indicate that the relationship between (f/P)max and h written into ANSI Standard S1 .26/ASA21-1978 contains an excessively large slope, does not account for the observed transition between low-humidity and high-humidity slopes, and specifies an erroneous temperature dependence.