cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Density matrices in integrable face models
Creators: name: Frahm, Holger
name: Westerfeld, Daniel
Publisher: name: Amsterdam : SciPost Foundation
Year: 2021
Subjects: subject: Hidden Grassmann structure
subject: XXZ model
subject: probabilities
subject: equation
subject: chains
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Using the properties of the local Boltzmann weights of integrable interaction-round-a-face (IRF or face) models we express local operators in terms of generalized transfer matrices. This allows for the derivation of discrete functional equations for the reduced density matrices in inhomogeneous generalizations of these models. We apply these equations to study the density matrices for IRF models of various solid-on-solid type and quantum chains of non-Abelian su(²)³ or Fibonacci anyons. Similar as in the six vertex model we find that reduced density matrices for a sequence of consecutive sites can be’factorized’, i.e. expressed in terms of nearest-neighbour correlators with coefficients which are independent of the model parameters. Explicit expressions are provided for correlation functions on up to three neighbouring sites.
Acupuncture to initiate labor (Acumoms 2): A randomized, sham-controlled clinical trial
Creators: name: Loh, Yen L.
name: Reilly, Aimee C.
name: Asher, Gary N.
name: Coeytaux, Remy R.
name: Harper, Terry C.
name: Chen, Wunian
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: To evaluate the efficacy of acupuncture for labor stimulation.
Renormalization group and approximate error correction
Creators: name: Furuya, Keiichiro
name: Lashkari, Nima
name: Moosa, Mudassir
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In renormalization group (RG) flow, the low energy states form a code subspace that is approximately protected against the local short-distance errors. We motivate this connection with an example of spin-blocking RG in classical spin models. We consider the continuous multi-scale renormalization ansatz (cMERA) for massive free fields as a concrete example of real-space RG in quantum field theory (QFT) and show that the low-energy coherent states are approximately protected from the errors caused by the high-energy localized coherent operators. In holographic RG flows, we study the phase transition in the entanglement wedge of a single region and argue that one needs to define the price and the distance of the code with respect to the reconstructable wedge.
title: « Un poème sans poème »
title: J’irai dans les sentiers
titleType: Subtitle
Creators: name: Ollivier, Mathilde
Publisher: name: Classiques Garnier
Year: 2022
Subjects: subject: Maldoror
subject: Ducasse
subject: Lautréamont
subject: Livre illustré
subject: Compte rendu
subject: Pajak
subject: Dessin
subject: Noir et blanc
subject: Germain Nouveau
subject: Rimbaud.
subject: Maldoror
subject: Ducasse
subject: Lautréamont
subject: Illustrated book
subject: Review
subject: Pajak
subject: Drawing
subject: Black and white
subject: Germain Nouveau
subject: Rimbaud.

description: Compte rendu de l’ouvrage de Frédéric Pajak paru en 2021 et consacré en partie à sa découverte de l’œuvre de Lautréamont.
description: A review of Frédéric Pajak’s book that was published in 2021 and devoted in part to his discovery of Lautréamont’s work.
Quantum commitments and signatures without one-way functions
Creators: name: Morimae, Tomoyuki
name: Yamakawa, Takashi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Computational Complexity (cs.CC)
subject: Cryptography and Security (cs.CR)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: In the classical world, the existence of commitments is equivalent to the existence of one-way functions. In the quantum setting, on the other hand, commitments are not known to imply one-way functions, but all known constructions of quantum commitments use at least one-way functions. Are one-way functions really necessary for commitments in the quantum world? In this work, we show that non-interactive quantum commitments (for classical messages) with computational hiding and statistical binding exist if pseudorandom quantum states exist. Pseudorandom quantum states are sets of quantum states that are efficiently generated but their polynomially many copies are computationally indistinguishable from the same number of copies of Haar random states [Ji, Liu, and Song, CRYPTO 2018]. It is known that pseudorandom quantum states exist even if $\BQP=\QMA$ (relative to a quantum oracle) [Kretschmer, TQC 2021], which means that pseudorandom quantum states can exist even if no quantum-secure classical cryptographic primitive exists. Our result therefore shows that quantum commitments can exist even if no quantum-secure classical cryptographic primitive exists. In particular, quantum commitments can exist even if no quantum-secure one-way function exists. In this work, we also consider digital signatures, which are other fundamental primitives in cryptography. We show that one-time secure digital signatures with quantum public keys exist if pseudorandom quantum states exist. In the classical setting, the existence of digital signatures is equivalent to the existence of one-way functions. Our result, on the other hand, shows that quantum signatures can exist even if no quantum-secure classical cryptographic primitive (including quantum-secure one-way functions) exists.
description: 26 pages
On twisted group C$^*$-algebras associated with FC-hypercentral groups and other related groups
Creators: name: Bedos, Erik
name: Omland, Tron
Publisher: name: arXiv
Year: 2014
Subjects: subject: Operator Algebras (math.OA)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: Primary: 46L05, Secondary: 22D25, 46L55

description: We show that the twisted group C$^*$-algebra associated with a discrete FC-hypercentral group is simple (resp. has a unique tracial state) if and only if Kleppner's condition is satisfied. This generalizes a result of J. Packer for countable nilpotent groups. We also consider a larger class of groups, for which we can show that the corresponding reduced twisted group C$^*$-algebras have a unique tracial state if and only if Kleppner's condition holds.
description: 16 pages. Some minor changes, mostly in subsection 2.3; two references added
Second trimester cervical length and risk of preterm birth in women with twin gestations treated with 17 alpha hydroxyprogesterone caproate
Creators: name: Caritis, Steve N.
name: Mercer, Brian M.
name: Carpenter, Marshall W.
name: Ramin, Susan M.
name: Varner, Michael W.
name: Rouse, Dwight J.
name: Peaceman, Alan M.
name: Spong, Catherine Y.
name: Malone, Fergal D.
name: Momirova, Valerija
name: Harper, Margaret
name: Sciscione, Anthony
name: Lo, Julie
name: Sorokin, Yoram
name: Thorp, John M.
name: Durnwald, Celeste P.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: To compare rates of preterm birth before 35 weeks based on cervical length measurement at 16-20 weeks in women with twin gestations who received 17 alpha hydroxyprogesterone caproate (17OHPC) or placebo.
Groups of p-absolute Galois type that are not absolute Galois groups
Creators: name: Blumer, Simone
name: Cassella, Alberto
name: Quadrelli, Claudio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Group Theory (math.GR)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11S20

description: Let p be a prime. We study pro-p groups of p-absolute Galois type, as defined by Lam-Liu-Sharifi-Wake-Wang. We prove that the pro-p completion of the right-angled Artin group associated to a chordal simplicial graph is of p-absolute Galois type, and moreover it satisfies a strong version of the Massey vanishing property. Also, we prove that Demushkin groups are of p-absolute Galois type, and that the free pro-p product -- and, under certain conditions, the direct product -- of two pro-p groups of p-absolute Galois type satisfying the Massey vanishing property is again a pro-p group of p-absolute Galois type satisfying the Massey vanishing property. Consequently, there is a plethora of pro-p groups of p-absolute Galois type satisfying the Massey vanishing property that do not occur as absolute Galois groups.
description: Final version, as it will appear on JPAA
Coexistence of Antiferromagnetism and Superconductivity in Iron-Based Superconductors
Creators: name: Matsui, Yasunori
name: Morinari, Takao
name: Tohyama, Takami
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We theoretically investigate the coexistence of antiferromagnetism and superconductivity in the iron-based superconductors by using the mean-field theory for two- and three-orbital models. We find that both the s_{+-}-wave and s_{++}-wave superconductivity can coexist with antiferromagnetism in the two models. On Dirac Fermi surfaces emerging in the antiferromagnetic phase, a superconducting-gap function has a node for s_{++} wave but is nodeless for s_{+-} wave. On the other hand, the gap function on non-Dirac Fermi surfaces is either nodeless or accidentally nodal, depending on the parameters of pairing interaction, which is independent of pairing symmetry.
description: 5 pages, 5 figures, to appear in J. Phys. Soc. Jpn
Placental villous hypermaturation is associated with idiopathic preterm birth
Creators: name: Spong, Catherine Y.
name: Ramin, Susan M.
name: Mercer, Brian M.
name: Thorp, John M.
name: Dudley, Donald J.
name: Wapner, Ronald J.
name: Peaceman, Alan M.
name: Morgan, Terry K.
name: Mele, Lisa
name: Sibai, Baha
name: Sorokin, Yoram
name: Tolosa, Jorge E.
name: O’Sullivan, Mary Jo
name: Rouse, Dwight J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: Pregnancy complications such as intra-amniotic infection, preeclampsia, and fetal intrauterine growth restriction (IUGR) account for most cases of preterm birth (PTB), but many spontaneous PTB cases do not have a clear etiology. We hypothesize that placental insufficiency may be a potential cause of idiopathic PTB.
Models of natural pest control: Towards predictions across agricultural landscapes
Creators: name: Alexandridis, Nikolaos
name: Marion, Glenn
name: Chaplin-Kramer, Rebecca
name: Dainese, Matteo
name: Ekroos, Johan
name: Grab, Heather
name: Jonsson, Mattias
name: Karp, Daniel S.
name: Meyer, Carsten
name: O'Rourke, Megan E.
name: Pontarp, Mikael
name: Poveda, Katja
name: Seppelt, Ralf
name: Smith, Henrik G.
name: Martin, Emily A.
name: Clough, Yann
Publisher: name: San Diego, Calif. : Academic Press
Year: 2021
Subjects: subject: Crop
subject: Ecological modelling
subject: Land use
subject: Landscape
subject: Natural control
subject: Pest
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: Natural control of invertebrate crop pests has the potential to complement or replace conventional insecticide-based practices, but its mainstream application is hampered by predictive unreliability across agroecosystems. Inconsistent responses of natural pest control to changes in landscape characteristics have been attributed to ecological complexity and system-specific conditions. Here, we review agroecological models and their potential to provide predictions of natural pest control across agricultural landscapes. Existing models have used a multitude of techniques to represent specific crop-pest-enemy systems at various spatiotemporal scales, but less wealthy regions of the world are underrepresented. A realistic representation of natural pest control across systems appears to be hindered by a practical trade-off between generality and realism. Nonetheless, observations of context-sensitive, trait-mediated responses of natural pest control to land-use gradients indicate the potential of ecological models that explicitly represent the underlying mechanisms. We conclude that modelling natural pest control across agroecosystems should exploit existing mechanistic techniques towards a framework of contextually bound generalizations. Observed similarities in causal relationships can inform the functional grouping of diverse agroecosystems worldwide and the development of the respective models based on general, but context-sensitive, ecological mechanisms. The combined use of qualitative and quantitative techniques should allow the flexible integration of empirical evidence and ecological theory for robust predictions of natural pest control across a wide range of agroecological contexts and levels of knowledge availability. We highlight challenges and promising directions towards developing such a general modelling framework.
Data-Driven Models for Control Engineering Applications Using the Koopman Operator
Creators: name: Junker, Annika
name: Timmermann, Julia
name: Trächtler, Ansgar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: Within this work, we investigate how data-driven numerical approximation methods of the Koopman operator can be used in practical control engineering applications. We refer to the method Extended Dynamic Mode Decomposition (EDMD), which approximates a nonlinear dynamical system as a linear model. This makes the method ideal for control engineering applications, because a linear system description is often assumed for this purpose. Using academic examples, we simulatively analyze the prediction performance of the learned EDMD models and show how relevant system properties like stability, controllability, and observability are reflected by the EDMD model, which is a critical requirement for a successful control design process. Subsequently, we present our experimental results on a mechatronic test bench and evaluate the applicability to the control engineering design process. As a result, the investigated methods are suitable as a low-effort alternative for the design steps of model building and adaptation in the classical model-based controller design method.
description: accepted for: 2022 3rd International Conference on Artificial Intelligence, Robotics and Control (AIRC 2022)
Isidore Ducasse vient quand il veut
Creators: name: Lerouge, Siméon
Publisher: name: Classiques Garnier
Year: 2022
Subjects: subject: Compte rendu
subject: Pierre Michon
subject: Le Roi vient quand il veut
subject: Lautréamont
subject: Ducasse
subject: Maldoror
subject: Littérature
subject: Propos.
subject: Review
subject: Pierre Michon
subject: Le Roi vient quand il veut
subject: Lautréamont
subject: Ducasse
subject: Maldoror
subject: Literature
subject: Statement.

description: Compte rendu du Roi vient quand il veut de Pierre Michon, série de propos sur la littérature parmi lesquels Lautréamont est plusieurs fois évoqué.
description: A review of Pierre Michon’s Le Roi vient quand il veut (The king comes when he wants to): a series of statements about literature that refers several times to the work of Lautréamont.
Magnetic, thermodynamic, and electrical transport properties of the noncentrosymmetric B20 germanides MnGe and CoGe
Creators: name: DiTusa, J. F.
name: Zhang, S. B.
name: Yamaura, K.
name: Xiong, Y.
name: Prestigiacomo, J. C.
name: Fulfer, B. W.
name: Adams, P. W.
name: Brickson, M. I.
name: Browne, D. A.
name: Capan, C.
name: Fisk, Z.
name: Chan, Julia Y.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present magnetization, specific heat, resistivity, and Hall effect measurements on the cubic B20 phase of MnGe and CoGe and compare to measurements of isostructural FeGe and electronic structure calculations. In MnGe, we observe a transition to a magnetic state at $T_c=275$ K as identified by a sharp peak in the ac magnetic susceptibility, as well as second phase transition at lower temperature that becomes apparent only at finite magnetic field. We discover two phase transitions in the specific heat at temperatures much below the Curie temperature one of which we associate with changes to the magnetic structure. A magnetic field reduces the temperature of this transition which corresponds closely to the sharp peak observed in the ac susceptibility at fields above 5 kOe. The second of these transitions is not affected by the application of field and has no signature in the magnetic properties or our crystal structure parameters. Transport measurements indicate that MnGe is metal with a negative magnetoresistance similar to that seen in isostructural FeGe and MnSi. Hall effect measurements reveal a carrier concentration of about 0.5 carriers per formula unit also similar to that found in FeGe and MnSi. CoGe is shown to be a low carrier density metal with a very small, nearly temperature independent diamagnetic susceptibility.
description: 16 pages 23 figures
Haptoglobin phenotype and abnormal uterine artery Doppler in a racially diverse cohort
Creators: name: McGee, Paula L.
name: Myatt, Leslie
name: Mercer, Brian M.
name: Varner, Michael W.
name: Samuels, Philip
name: Sorokin, Yoram
name: Weissgerber, Tracey L.
name: Hauth, John C.
name: Sciscione, Anthony C.
name: Wapner, Ronald J.
name: Ramin, Susan M.
name: Thorp, John M.
name: Harper, Margaret
name: Peaceman, Alan M.
name: Saade, George
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: The anti-oxidant and proangiogenic protein haptoglobin (Hp) is believed to be important for implantation and pregnancy, although its specific role is not known. The three phenotypes (1-1, 2-1 and 2-2) differ in structure and function. Hp 2-2 is associated with increased vascular stiffness in other populations. We examined whether Hp phenotype is associated with abnormal uterine artery Doppler (UAD) in pregnancy.
Gloses et glanes
Creators: name: (:Unap)
Publisher: name: Classiques Garnier
Year: 2022
Subjects: subject: Lautréamont
subject: Isidore Ducasse
subject: Maldoror
subject: Gloses et glanes
subject: Poésies
subject: Actualités.
subject: Lautréamont
subject: Isidore Ducasse
subject: Maldoror
subject: Glosses and gleanings
subject: Poésies
subject: News.

description: Dans cette rubrique collective, les Cahiers Lautréamont compilent les traces d’Isidore Ducasse dans l’actualité culturelle.
description: In this section, les Cahiers Lautréamont follows the traces of Isidore Ducasse in cultural news.
Skyrmion nucleation on the surface of a topological insulator
Creators: name: Kurebayashi, Daichi
name: Tretiakov, Oleg A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Skyrmion nucleation induced by spin-transfer torques at an interface of a topological insulator and a ferromagnetic insulator is investigated. Due to strong spin-orbit coupling on a surface of topological insulators, which enhances the effect of spin torques, efficient manipulation of skyrmions is expected, and therefore, topological insulators could provide the ideal platform to achieve high-performance skyrmionic devices. Using micromagnetic simulations and energetics, we evaluate properties of the skyrmion nucleation on a surface of topological insulators, such as nucleation time, critical electric field, and skyrmion numbers. We show that the nucleation time is inversely proportional to the applied electric field. We also identify the Gilbert damping and temperature dependencies of the critical field. Furthermore, we analytically evaluate the effect of the Dzyaloshinskii-Moriya interaction and demonstrate that the temperature dependence can be explained by the reduction of a magnon excitation gap due to the self-energy corrections.
description: 9 pages, 6 figures
ПРОБЛЕМА СНИЖЕНИЯ МОТИВАЦИИ УЧАЩИХСЯ: ПРИЧИНЫ И ПУТИ РЕШЕНИЯ
Creators: name: Бекметова, Дильноза
Publisher: name: Zenodo
Year: 2024

description: Мотивация была в центре внимания учителей на протяжении многих лет, поскольку она составляет основу процесса обучения. Обучение - сложный и динамичный процесс, и обучение в реальном смысле завершается благодаря мотивации. Поскольку желание учиться является одним из основных элементов обучения, учащиеся делают важный шаг на пути к обучению с помощью мотивации. Однако иногда учащиеся могут терять желание и интерес к уроку, что создает серьезный барьер на пути эффективного изучения предмета. Таким образом, данное исследование касается отсутствия мотивации.
Correction to: Editorial: symmetries and asymmetries in physics
Creators: name: Dardashti, Radin
name: Frisch, Mathias
name: Valente, Giovanni
Publisher: name: Dordrecht [u.a.] : Springer Science + Business Media B.V
Year: 2021
Subjects: subject: Dewey Decimal Classification::100 | Philosophie

description: The article Editorial: symmetries and asymmetries in physics, written by Radin Dardashti, Mathias Frisch, Giovanni Valente, was originally published electronically on the publisher’s internet portal on 3 July 2020 without open access. With the author(s)’ decision to opt for Open Choice the copyright of the article changed on 16 June 2021 to © The Author(s) 2021 and the article is forthwith distributed under a Creative Commons Attribution.
Expression of the putative proto-oncogene His-1 in normal and neoplastic tissues.
Creators: name: The University of North Carolina at Chapel Hill University Libraries
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1997

description: The His-1 gene is expressed as a 3-kb spliced and polyadenylated RNA that is believed to function in the absence of an encoded protein. The precise function of the His-1 gene is unknown, but its transcriptional activation in a series of mouse leukemias has implicated the His-1 RNA in leukemogenesis when it is abnormally expressed. To study the oncogenic potential of this gene in more detail, we have examined the normal tissue distribution of His-1 RNA during mouse embryogenesis and in various adult tissues. His-1 expression was detected at low levels in the epithelia of the adult mouse stomach, prostate, seminal vesicle, and the developing choroid plexus by in situ hybridization. All other tissues examined lacked detectable levels of hybridizing RNA, suggesting that normal His-1 gene expression is highly restricted to these epithelial sites. These transcripts were not detectable by Northern blot analysis of normal tissues but were readily identified in five mouse leukemias and in five carcinomas of the choroid plexus. These data indicate that the His-1 gene expression is highly restricted and suggest that inappropriate activation of this gene may contribute to carcinogenesis.
A Minimax Framework for Two-Agent Scheduling with Inertial Constraints
Creators: name: Yang, Feihong
name: Shen, Yuan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Autonomous agents are promising in applications such as intelligent transportation and smart manufacturing, and scheduling of agents has to take their inertial constraints into consideration. Most current researches require the obedience of all agents, which is hard to achieve in non-dedicated systems such as traffic intersections. In this article, we establish a minimax framework for the scheduling of two inertially constrained agents with no cooperation assumptions. Specifically, we first provide a unified and sufficient representation for various types of situation information, and define a state value function characterizing the agent's preference of states under a given situation. Then, the minimax control policy along with the calculation methods is proposed which optimizes the worst-case state value function at each step, and the safety guarantee of the policy is also presented. Furthermore, several generalizations are introduced on the applicable scenarios of the proposed framework. Numerical simulations show that the minimax control policy can reduce the largest scheduling cost by $13.4\%$ compared with queueing and following policies. Finally, the effects of decision period, observation period and inertial constraints are also numerically discussed.
Highly-integrated signal and pump combiner in chirally-coupled-core fibers
Creators: name: Hochheim, Sven
name: Brockmuller, Eike
name: Wessels, Peter
name: Steinke, Michael
name: Koponen, Joona
name: Lowder, Tyson
name: Novotny, Steffen
name: Neumann, Jorg
name: Kracht, Dietmar
Publisher: name: Washington, DC : Optica
Year: 2021
Subjects: subject: Chirally-coupled-core fiber
subject: Signal and pump combiner
subject: Specialty fiber
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Integrated fiber components enable compact and robust laser systems but are usually not available with specialty fibers. However, specialty fibers allow power scaling of fiber lasers and amplifiers with all advantages of these fiber designs. In this context, chirally-coupled-core fibers show promising properties for optical fiber components. In this paper, we present the development of a highly-integrated signal and pump combiner in chirally-core-fibers using a side-pumping technology. Combining up to four fiber-coupled pump diodes, a pump-light limited power handling of 600 W can be achieved with an efficiency of 78%. The combiner was tested in a side-pumped single-frequency all-fiber amplifier but can also be implemented in almost any fiber laser or amplifier.
Nasopharyngeal carcinomas frequently lack the p16/MTS1 tumor suppressor protein but consistently express the retinoblastoma gene product.
Creators: name: The University of North Carolina at Chapel Hill University Libraries
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1998

description: The p16/MTS1 gene is altered by deletion, mutation, or hypermethylation in a wide variety of human cancers. As a result of deficient p16 protein, these cancers lack a critical mechanism for halting G1/S cell cycle progression. In the current study, 59 cases of nasopharyngeal carcinoma were evaluated for expression of the p16 tumor suppressor protein by immunohistochemical analysis of paraffin-embedded tissue. There was no detectable p16 in 38/59 cases (64%), which implies a very high rate of p16 inactivation in this type of cancer. On the other hand, the retinoblastoma gene product, which also regulates the G1 to S phase transition of the cell cycle, was consistently expressed in nasopharyngeal carcinomas by immunohistochemical analysis. These results implicate p16 inactivation but not Rb alteration in the stepwise progression of nasopharyngeal carcinogenesis.
Developmental Platelet Endothelial Cell Adhesion Molecule Expression Suggests Multiple Roles for a Vascular Adhesion Molecule
Creators: name: Bautch, Victoria L.
name: Redick, Sambra D.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1999

description: Platelet endothelial cell adhesion molecule (PECAM) is used extensively as a murine vascular marker. PECAM interactions have been implicated in both vasculogenesis and angiogenesis. To better understand the role of PECAM in mammalian development, PECAM expression was investigated during differentiation of murine embryonic stem (ES) cells and in early mouse embryos. Undifferentiated ES cells express PECAM, and as in vitro differentiation proceeds previously unidentified PECAM-positive cells that are distinct from vascular endothelial cells appear. PECAM expression is gradually restricted to endothelial cells and some hematopoietic cells of differentiated blood islands. In embryos, the preimplantation blastocyst contains PECAM-positive cells. PECAM expression is next documented in the postimplantation embryonic yolk sac, where clumps of mesodermal cells express PECAM before the development of mature blood islands. The patterns of PECAM expression suggest that undifferentiated cells, a prevascular cell type, and vascular endothelial cells express this marker during murine development. PECAM expression in blastocysts and by ES cells suggests that PECAM may function outside the vascular/hematopoietic lineage.
Геология и рудоносность Угуйской и Олдонгсинской структур Чаро-Олёкминского блока алданского щита (по материалам ГДП-200)
Creators: name: Кукушкин Константин Александрович
name: Терехов Артём Валерьевич
name: Молчанов Анатолий Васильевич
name: Козлов Дмитрий Сергеевич
name: Соловьёв Олег Леонидович
name: Титов Дмитрий Юрьевич
name: Хорохорина Елена Ивановна
Publisher: name: Руды и металлы
Year: 2018
Subjects: Алданский щит
Якутия
Олдонгсинская грабен-синклиналь
Угуйская
метасоматиты
гидротермально-метасоматические изменения
Таборное
гумбеиты
березиты
пропилиты

description: Образование месторождений полезных ископаемых – сложный и продолжительный по времени процесс. Его интерпретация во многом зависит от глубины исследований и отражает выработанные в ходе выполненных работ взгляды авторов. В статье на основе результатов ГДП-200 листа О-51-XIX (Олдонгсинская площадь) и данных, полученных при проведении прогнозно-минерагенических работ на золото и уран в 90-х годах прошлого века, коллективом авторов представляется их видение модели формирования золото-уранового оруденения в пределах Олдонгсинской и Угуйской грабен-синклиналей
Supernova Bounds on the Dark Photon Using its Electromagnetic Decay
Creators: name: Kazanas, Demos
name: Mohapatra, Rabindra N.
name: Nussinov, Shmuel
name: Teplitz, Vigdor L.
name: Zhang, Yongchao
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The hypothetical massive dark photon ($γ'$) which has kinetic mixing with the SM photon can decay electromagnetically to $e^+e^-$ pairs if its mass $m$ exceeds $2m_e$ and otherwise into three SM photons. These decays yield cosmological and supernovae associated signatures. We briefly discuss these signatures, particularly in connection with the supernova SN1987A and delineate the extra constraints that may then arise on the mass and mixing parameter of the dark photon. In particular, we find that for dark photon mass $m_{γ'}$ in the 5-20 MeV range, arguments based on supernova 1987A observations lead to a bound on $ε$ which is about 300 times stronger than the presently existing bounds based on energy loss arguments.
description: 10 pages, 6 figures, minor typos corrected, version to appear in NPB
Author Correction: High-resolution, large-scale laboratory measurements of a sandy beach and dynamic cobble berm revetment
Creators: name: Blenkinsopp, Chris E.
name: Bayle, Paul M.
name: Conley, Daniel C.
name: Masselink, Gerd
name: Gulson, Emily
name: Kelly, Isabel
name: Almar, Rafael
name: Turner, Ian L.
name: Baldock, Tom E.
name: Beuzen, Tomas
name: McCall, Robert T.
name: Rijper, Huub
name: Reniers, Ad
name: Troch, Peter
name: Gallach-Sanchez, David
name: Hunter, Alan J.
name: Bryan, Oscar
name: Hennessey, Gwyn
name: Ganderton, Peter
name: Tissier, Marion
name: Kudella, Matthias
name: Schimmels, Stefan
Publisher: name: London : Nature Publ. Group
Year: 2021
Subjects: subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: The original version of this Data Descriptor contained errors in the author affiliations. Peter Troch was incorrectly associated with DEME Group and the Department of Civil Engineering, Ghent University was inadvertently omitted. This has now been corrected in both the PDF and HTML versions of the Data Descriptor.
A survey of text representation methods and their genealogy
Creators: name: Siebers, Philipp
name: Janiesch, Christian
name: Zschech, Patrick
Publisher: name: TU Dortmund
Year: 2022
Subjects: subject: Artificial neural networks
subject: Genealogy
subject: Natural language processing
subject: Survey
subject: Taxonomy
subject: Text representation
subject: 004
subject: Neuronales Netz
subject: Genealogie
subject: Natürliche Sprache
subject: Umfrage
subject: Taxonomie
subject: Wissensrepräsentation

description: In recent years, with the advent of highly scalable artificial-neural-network-based text representation methods the field of natural language processing has seen unprecedented growth and sophistication. It has become possible to distill complex linguistic information of text into multidimensional dense numeric vectors with the use of the distributional hypothesis. As a consequence, text representation methods have been evolving at such a quick pace that the research community is struggling to retain knowledge of the methods and their interrelations. We contribute threefold to this lack of compilation, composition, and systematization by providing a survey of current approaches, by arranging them in a genealogy, and by conceptualizing a taxonomy of text representation methods to examine and explain the state-of-the-art. Our research is a valuable guide and reference for artificial intelligence researchers and practitioners interested in natural language processing applications such as recommender systems, chatbots, and sentiment analysis.
description: IEEE access / Institute of Electrical and Electronics Engineers;Bd 10. 2022, Art. Nr. 96492-96513
Contrasting Effects of CCR5 and CCR2 Deficiency in the Pulmonary Inflammatory Response to Influenza A Virus
Creators: name: Dawson, Tracey C.
name: Maeda, Nobuyo
name: Beck, Melinda A.
name: Henderson, Fred
name: Kuziel, William A.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2000

description: The immune response to influenza A virus is characterized by an influx of both macrophages and T lymphocytes into the lungs of the infected host, accompanied by induced expression of a number of CC chemokines. CC chemokine receptors CCR5 and CCR2 are both expressed on activated macrophages and T cells. We examined how the absence of these chemokine receptors would affect pulmonary chemokine expression and induced leukocyte recruitment by infecting CCR5-deficient mice and CCR2-deficient mice with a mouse-adapted strain of influenza A virus. CCR5−/− mice displayed increased mortality rates associated with acute, severe pneumonitis, whereas CCR2−/− mice were protected from the early pathological manifestations of influenza because of defective macrophage recruitment. This delay in macrophage accumulation in CCR2−/− mice caused a subsequent delay in T cell migration, which correlated with high pulmonary viral titers at early time points. Infected CCR5−/− mice and CCR2−/− mice both exhibited increased expression of the gene for MCP-1, the major ligand for CCR2−/− and a key regulator of induced macrophage migration. These studies illustrate the very different roles that CCR5 and CCR2 play in the macrophage response to influenza infection and demonstrate how defects in macrophage recruitment affect the normal development of the cell-mediated immune response.
Distribution and Characterization of GFP+ Donor Hematogenous Cells in Twitcher Mice after Bone Marrow Transplantation
Creators: name: Frelinger, Jeffrey
name: Meyers, Anthony
name: McMahon, Eileen
name: Suzuki, Kinuko
name: Wu, Yun-Ping
name: Kraine, Meredith R.
name: Matsushima, Glenn K.
name: Tisch, Roland
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2000

description: The twitcher mouse is a murine model of globoid cell leukodystropy, a genetic demyelinating disease caused by a mutation of the galactosylceramidase gene. Demyelination of the central nervous system commences around 20 postnatal days. Using GFP-transgenic mice as donors, the distribution of hematogenous cells after bone marrow transplantation was investigated in the twitcher mice. Bone marrow transplantation was carried out at 8 postnatal days. In twitcher chimeric mice examined before 30 postnatal days, numerous GFP+ cells were detected in spleen and peripheral nerve but only a few were detected in the liver, lung, and spinal white matter. In contrast, at 35 to 40 postnatal days when demyelination is evident, many GFP+ cells with ameboid form were detected in the white matter of the spinal cord, brainstem, and cerebrum. Approximately half of these GFP+ cells were co-labeled with Mac-1. In twitcher chimeric mice examined after 100 postnatal days, the majority of GFP/Mac-1 double-positive cells displayed the morphological features of ramified microglia with fine delicate processes and was distributed diffusely in both gray and white matter. These results suggest that a significant number of donor hematogenous cells are able to infiltrate into the brain parenchyma, repositioning themselves into areas previously occupied by microglia, and to ameliorate lethality.
Pseudospectral continuation for aeroelastic stability analysis
Creators: name: Pons, Arion
Publisher: name: arXiv
Year: 2022
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This technical note is concerned with aeroelastic flutter problems: the analysis of aeroelastic systems undergoing airspeed-dependent dynamic instability. Existing continuation methods for parametric stability analysis are based on marching along an airspeed parameter until the flutter point is found - an approach which may waste computational effort on low-airspeed system behavior, before a flutter point is located and characterized. Here, we describe a pseudospectral continuation approach which instead marches outwards from the system's flutter points, from points of instability to points of increasing damping, allowing efficient characterization of the subcritical and supercritical behavior of the system. This approach ties together aeroelastic stability analysis and abstract linear algebra, and provides efficient methods for computing practical aeroelastic stability properties - for instance, flight envelopes based on maximum modal damping, and the location of borderline-stable zones.
description: Technical note
The Pantheon+ Analysis: Cosmological Constraints
Creators: name: Brout, Dillon
name: Scolnic, Dan
name: Popovic, Brodie
name: Riess, Adam G.
name: Zuntz, Joe
name: Kessler, Rick
name: Carr, Anthony
name: Davis, Tamara M.
name: Hinton, Samuel
name: Jones, David
name: Kenworthy, W. D'Arcy
name: Peterson, Erik R.
name: Said, Khaled
name: Taylor, Georgie
name: Ali, Noor
name: Armstrong, Patrick
name: Charvu, Pranav
name: Dwomoh, Arianna
name: Palmese, Antonella
name: Qu, Helen
name: Rose, Benjamin M.
name: Stubbs, Christopher W.
name: Vincenzi, Maria
name: Wood, Charlotte M.
name: Brown, Peter J.
name: Chen, Rebecca
name: Chambers, Ken
name: Coulter, David A.
name: Dai, Mi
name: Dimitriadis, Georgios
name: Filippenko, Alexei V.
name: Foley, Ryan J.
name: Jha, Saurabh W.
name: Kelsey, Lisa
name: Kirshner, Robert P.
name: Möller, Anais
name: Muir, Jessie
name: Nadathur, Seshadri
name: Pan, Yen-Chen
name: Rest, Armin
name: Rojas-Bravo, Cesar
name: Sako, Masao
name: Siebert, Matthew R.
name: Smith, Mat
name: Stahl, Benjamin E.
name: Wiseman, Phil
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present constraints on cosmological parameters from the Pantheon+ analysis of 1701 light curves of 1550 distinct Type Ia supernovae (SNe Ia) ranging in redshift from $z=0.001$ to 2.26. This work features an increased sample size, increased redshift span, and improved treatment of systematic uncertainties in comparison to the original Pantheon analysis and results in a factor of two improvement in cosmological constraining power. For a Flat$Λ$CDM model, we find $Ω_M=0.334\pm0.018$ from SNe Ia alone. For a Flat$w_0$CDM model, we measure $w_0=-0.90\pm0.14$ from SNe Ia alone, H$_0=73.5\pm1.1$ km s$^{-1}$ Mpc$^{-1}$ when including the Cepheid host distances and covariance (SH0ES), and $w_0=-0.978^{+0.024}_{-0.031}$ when combining the SN likelihood with constraints from the cosmic microwave background (CMB) and baryon acoustic oscillations (BAO); both $w_0$ values are consistent with a cosmological constant. We also present the most precise measurements to date on the evolution of dark energy in a Flat$w_0w_a$CDM universe, and measure $w_a=-0.1^{+0.9}_{-2.0}$ from Pantheon+ alone, H$_0=73.3\pm1.1$ km s$^{-1}$ Mpc$^{-1}$ when including SH0ES, and $w_a=-0.65^{+0.28}_{-0.32}$ when combining Pantheon+ with CMB and BAO data. Finally, we find that systematic uncertainties in the use of SNe Ia along the distance ladder comprise less than one third of the total uncertainty in the measurement of H$_0$ and cannot explain the present "Hubble tension" between local measurements and early-Universe predictions from the cosmological model.
description: 34 Pages, 16 Figures, 7 Tables. Published in ApJ. Comments welcome. Papers and data release here: https://pantheonplussh0es.github.io
Scale and scope economies in small household rice farming in Vietnam
Creators: name: Hoang, Viet-Ngu
name: Nguyen, Trung Thanh
name: Wilson, Clevo
name: Ho, Thong Quoc
name: Khanal, Uttam
Publisher: name: Amsterdam [u.a.] : Elsevier
Year: 2021
Subjects: subject: economies of scale
subject: economies of scope
subject: input distance function
subject: product-specific
subject: stochastic frontier
subject: Dewey Decimal Classification::600 | Technik::630 | Landwirtschaft, Veterinärmedizin
subject: Dewey Decimal Classification::600 | Technik::640 | Hauswirtschaft und Familienleben

description: The Vietnamese agricultural sector has experienced a dramatic structural change based on increased specialization in rice cultivation. However, small-scale rice-farmers have continued to grow multiple crops, especially in less developed provinces. While the literature advocates crop diversification for reasons of both economic and ecological sustainability, there lacks empirical evidence as to whether crop diversification brings efficiency and productivity gains to small farms. The present study is the first applications of the input-oriented stochastic distance function approach in estimating scale and scope economies using data of multi-crop farming households in Vietnam. We find strong evidence of product-specific economies of scale. Scope economies are also present for rice, vegetable, and other annual crop production. This suggests that crop diversification enhances efficiency and productivity. However, there still exists significant technical inefficiency in crop production, indicating opportunities to expand farm output at the existing level of inputs and technologies. More specifically, our empirical results indicate that it is desirable to expand vegetable and other annual crop production in mountainous areas while rice cultivation can be further expanded in delta and coastal regions.
Solution to the cosmic ray anisotropy problem
Creators: name: Mertsch, Philipp
name: Funk, Stefan
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In the standard diffusive picture for transport of cosmic rays (CRs), a gradient in the CR density induces a typically small, dipolar anisotropy in their arrival directions. This has been widely advertised as a tool for finding nearby sources. However, the predicted dipole amplitude at TeV and PeV energies exceeds the measured one by almost two orders of magnitude. Here, we critically examine the validity of this prediction which is based on averaging over an ensemble of turbulent magnetic fields. We focus (1) on the deviations of the dipole in a particular random realisation from the ensemble average and (2) the possibility of a misalignment between the regular magnetic field and the CR gradient. We find that if the field direction and the gradient direction are close to $\sim 90^\circ$, the dipole amplitude is considerably suppressed and can be reconciled with observations, which sheds light on a long-standing problem. Furthermore, we show that the dipole direction in general does not coincide with the gradient direction, thus hampering the search for nearby sources.
description: 5 pages, 5 figures; extended discussion; published in PRL
Steering microbiomes by organic amendments towards climate-smart agricultural soils
Creators: name: Brenzinger, Kristof
name: Costa, Ohana Y. A.
name: Ho, Adrian
name: Koorneef, Guusje
name: Robroek, Bjorn
name: Molenaar, Douwe
name: Korthals, Gerard
name: Bodelier, Paul L. E.
Publisher: name: Berlin ; Heidelberg : Springer
Year: 2021
Subjects: subject: Agricultural soils
subject: Flux measurements
subject: Greenhouse gases
subject: Microbial community abundance and compositions
subject: Organic amendment
subject: Plant growth
subject: Dewey Decimal Classification::600 | Technik::630 | Landwirtschaft, Veterinärmedizin
subject: Dewey Decimal Classification::600 | Technik::640 | Hauswirtschaft und Familienleben

description: We steered the soil microbiome via applications of organic residues (mix of cover crop residues, sewage sludge + compost, and digestate + compost) to enhance multiple ecosystem services in line with climate-smart agriculture. Our result highlights the potential to reduce greenhouse gases (GHG) emissions from agricultural soils by the application of specific organic amendments (especially digestate + compost). Unexpectedly, also the addition of mineral fertilizer in our mesocosms led to similar combined GHG emissions than one of the specific organic amendments. However, the application of organic amendments has the potential to increase soil C, which is not the case when using mineral fertilizer. While GHG emissions from cover crop residues were significantly higher compared to mineral fertilizer and the other organic amendments, crop growth was promoted. Furthermore, all organic amendments induced a shift in the diversity and abundances of key microbial groups. We show that organic amendments have the potential to not only lower GHG emissions by modifying the microbial community abundance and composition, but also favour crop growth-promoting microorganisms. This modulation of the microbial community by organic amendments bears the potential to turn soils into more climate-smart soils in comparison to the more conventional use of mineral fertilizers.