cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Nonlinear phase estimation enhanced by an actively correlated Mach-Zehnder interferometer
Creators: name: Jiao, Gao-Feng
name: Zhang, Keye
name: Chen, L. Q.
name: Zhang, Weiping
name: Yuan, Chun-Hua
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A nonlinear phase shift is introduced to a Mach-Zehnder interferometer (MZI), and we present a scheme for enhancing the phase sensitivity. In our scheme, one input port of a standard MZI is injected with a coherent state and the other input port is injected with one mode of a two-mode squeezed-vacuum state. The final interference output of the MZI is detected with the method of active correlation output readout. Based on the optimal splitting ratio of beam splitters, the phase sensitivity can beat the standard quantum limit and approach the quantum Cramér-Rao bound. The effects of photon loss on phase sensitivity are discussed. Our scheme can also provide some estimates for units of $χ^{(3)}$, due to the relation between the nonlinear phase shift and the susceptibility $χ^{(3)}$ of the Kerr medium.
description: 4 figures
Enhanced electrical and electrocaloric properties in lead-free Ba0.8Ca0.2ZrxTi1-xO3 (x = 0 and 0.02) ceramics
Creators: name: Merselmiz, Soukaina
name: Hanani, Zouhair
name: Moumen, Said Ben
name: Matavz, Aleksander
name: Mezzane, Daoud
name: Novak, Nikola
name: Abkhar, Zahra
name: Hajji, Lahoucine
name: Amjoud, Mbarek
name: Gagou, Yaovi
name: Hoummada, Khalid
name: Cresnar, Dejvid
name: Kutnjak, Zdravko
name: Rozic, Brigita
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The effects of 2% Zr introduction in Ba0.8Ca0.2TiO3 (BCT) system on its electrical and the electrocaloric properties was investigated.
Fluctuation theory of connectivities for subcritical random cluster models
Creators: name: Campanino, Massimo
name: Ioffe, Dmitry
name: Velenik, Yvan
Publisher: name: arXiv
Year: 2006
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 60F15, 60K15, 60K17, 60K35, 82B20, 82B41 (Primary) 37C30 (Secondary)

description: We develop a fluctuation theory of connectivities for subcritical random cluster models. The theory is based on a comprehensive nonperturbative probabilistic description of long connected clusters in terms of essentially one-dimensional chains of irreducible objects. Statistics of local observables, for example, displacement, over such chains obey classical limit laws, and our construction leads to an effective random walk representation of percolation clusters. The results include a derivation of a sharp Ornstein--Zernike type asymptotic formula for two point functions, a proof of analyticity and strict convexity of inverse correlation length and a proof of an invariance principle for connected clusters under diffusive scaling. In two dimensions duality considerations enable a reformulation of these results for supercritical nearest-neighbor random cluster measures, in particular, for nearest-neighbor Potts models in the phase transition regime. Accordingly, we prove that in two dimensions Potts equilibrium crystal shapes are always analytic and strictly convex and that the interfaces between different phases are always diffusive. Thus, no roughening transition is possible in the whole regime where our results apply. Our results hold under an assumption of exponential decay of finite volume wired connectivities [assumption (1.2) below] in rectangular domains that is conjectured to hold in the whole subcritical regime; the latter is known to be true, in any dimensions, when $q=1$, $q=2$, and when $q$ is sufficiently large. In two dimensions assumption (1.2) holds whenever there is an exponential decay of connectivities in the infinite volume measure. By duality, this includes all supercritical nearest-neighbor Potts models with positive surface tension between ordered phases.
description: Published in at http://dx.doi.org/10.1214/07-AOP359 the Annals of Probability (http://www.imstat.org/aop/) by the Institute of Mathematical Statistics (http://www.imstat.org)
The one-loop amplitude for six-gluon scattering
Creators: name: Ellis, R. K.
name: Giele, W. T.
name: Zanderighi, Giulia
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present results for the six-gluon scattering amplitude at one-loop. Since our method is semi-numerical, it yields the result for arbitrary momenta and helicities of the external gluons. We evaluate the colour-ordered sub-amplitudes with gluons, fermions and scalars running in the internal loop. This is more than sufficient to give a complete description of six-gluon scattering at one-loop in QCD. Combination of these results into amplitudes with ${\cal{N}}=4$ and ${\cal{N}}=1$ multiplets of supersymmetric Yang-Mills or with a complex scalar in the internal loops allows comparison with analytic results in the literature. The numerical results for most of the helicity combinations with loops of complex scalars are new.
title: Проектирование технологической оснастки
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2021

description: В учебном пособии рассмотрены компоненты технологической оснастки для изготовления резанием широкой номенклатуры деталей машиностроительного производства: приспособлений для закрепления заготовок (станочные приспособления) и приспособлений для закрепления металлорежущего инструмента (вспомогательный инструмент) на станках с ЧПУ, ГПМ и ГПС. Подготовлено в соответствии с Федеральным государственным образовательным стандартом высшего образования. Предназначено для студентов, обучающихся по специальности 15.05.01 «Проектирование технологических машин и комплексов» (профиль «Проектирование механообрабатывающих и инструментальных комплексов в машиностроении»), изучающих дисциплину «Проектирование технологической оснастки».
Intuition
Creators: name: Koksvik, Ole Andreas Klaeboe
Publisher: name: The Australian National University
Year: 2018
Subjects: subject: BF315.5.K65 2011
subject: Intuition

description: In this thesis I seek to advance our understanding of what intuitions are. I argue that intuitions are experiences of a certain kind. In particular, they are experiences with representational content, and with a certain phenomenal character. In Chapter 1 I identify our target and provide some important preliminaries. Intuitions are mental states, but which ones? Giving examples helps: a person has an intuition when it seems to her that torturing the innocent is wrong, or that if something is red it is coloured. We can also provide an initial characterisation of the state by saying that it has representational content, often causes belief, and appears to justify belief. In addition, there is something it is like to have an intuition: intuition has a certain phenomenal character. Some argue that intuition does not explain anything which cannot be explained by other mental states. One version of this view takes intuition to reduce to belief. In Chapter 2 I argue that this entails that agents are rationally criticisable in situations where we know they are not, and that such views are therefore untenable. A parallel argument shows that the corresponding approach to perception fails. This suggests a similarity in nature: both intuition and perception are experiences. Others take intuition to reduce to a disposition to have a belief. In Chapter 3 I consider a line of argument against such views, find it unsuccessful, and present two new arguments. One is likely to be dialectically ineffective. The other suffers no such weakness: it shows that the proposed reduction fails. As before, the argument also applies to perception, and suggests that intuition and perception are both experiences. In the remainder of the thesis I develop an account of intuition as an experience. I distinguish between content-specific and attitude-specific phenomenology, and argue that intuition lacks the former (Chapter 4), but has the latter (Chapter 5). This allows us to say what intuition is: it is is an experience with representational content and with attitude-specific phenomenology of a certain kind. In Chapter 6 I put this account of intuition to use. When a person has a perceptual or intuitional experience, I argue that simply having the experience is what makes the subject justified in believing what the experience represents. Moreover, what explains that intuition and perception can justify belief in this way is precisely their phenomenal character.
Combined effects of strong and electroweak FCNC effective operators in top quark physics at the LHC
Creators: name: Ferreira, P. M.
name: Guedes, R. B.
name: Santos, R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the combined effects of both strong and electroweak dimension six effective operators on flavour changing top quark physics at the LHC. Analytic expressions for the cross sections and decay widths of several flavour changing processes will be presented, as well as an analysis of the feasibility of their observation at the LHC.
description: 22 pages, 14 figures
Nonlinear perturbations of cosmological scalar fields
Creators: name: Langlois, David
name: Vernizzi, Filippo
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a covariant formalism for studying nonlinear perturbations of scalar fields. In particular, we consider the case of two scalar fields and introduce the notion of adiabatic and isocurvature covectors. We obtain differential equations governing the evolution of these two covectors, as well as the evolution equation for the covector associated with the curvature perturbation. The form of these equations is very close to the analogous equations obtained in the linear theory, but our equations are fully nonlinear and exact. As an application of our formalism, we expand these equations at second order in the perturbations. On large scales, we obtain a closed system of coupled scalar equations giving the evolution of the second-order adiabatic and entropy perturbations in terms of the first-order perturbations. These equations in general contain a nonlocal term which, however, rapidly decays in an expanding universe.
description: 45 pages. v3: corrected Eqs. (213), (220), (221) and (225)
CentOS Linux for the ATLAS MUCTPI Upgrade
Creators: name: Spiwoks, R.
name: Armbruster, A.
name: Czodrowski, P.
name: Ellis, N.
name: Farthouat, P.
name: Haas, S.
name: Kulinska, A.
name: Marzin, A.
name: Papageorgiou, P.
name: Pauly, T.
name: Perrella, S.
name: Saimpert, M.
name: Vichoudis, P.
name: Wengler, T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A new Muon-to-Central-Trigger Processor Interface (MUCTPI) was built as part of the upgrade of the ATLAS Level-1 trigger system for the next Run of the Large Hadron Collider at CERN. The MUCTPI has 208 high-speed optical serial links for receiving muon candidates from the muon trigger detectors. Three high-end FPGAs are used for real-time processing of the muon candidates, for sending trigger information to other parts of the trigger system, and for sending summary information to the data acquisition and monitoring system. A System-on-Chip (SoC) is used for the control, configuration and monitoring of the hardware and the operation of the MUCTPI. The SoC consists of an FPGA part and a processor system. The FPGA part provides communication with the processing FPGAs, while the processor system runs software for communication with the run-control system of the ATLAS experiment. In this paper we will describe our experience with running CentOS Linux on the SoC. Cross-compilation together with the existing framework for building of the ATLAS trigger and data acquisition (TDAQ) software is being used in order to allow the deployment of the TDAQ software directly on the SoC.
description: Presented at IEEE RT 2020, 12-23 October 2020
Multiparty controlled quantum secret direct communication using Greenberger-Horne-Zeilinger state
Creators: name: Wang, Jian
name: Zhang, Quan
name: Tang, Chao-jing
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Base on the idea of dense coding of three-photon entangled state and qubit transmission in blocks, we present a multiparty controlled quantum secret direct communication scheme using Greenberger-Horne-Zeilinger state. In the present scheme, the sender transmits her three bits of secret message to the receiver directly and the secret message can only be recovered by the receiver under the permission of all the controllers. All three-photon entangled states are used to transmit the secret messages except those chosen for eavesdropping check and the present scheme has a high source capacity because Greenberger-Horne-Zeilinger state forms a large Hilbert space.
Household archaeology at the Scowlitz site, Fraser Valley, B.C.
Creators: name: Morrison, Sandra Lynne
Publisher: name: University of British Columbia
Year: 2009

description: This thesis examines the role of the household in the social history of Sto:lo society, and specifically its role in the development of social complexity. Based on the archaeological house remains from the Scowlitz site, this research proposes a model for household archaeology in the Fraser Valley as an independent line of evidence to investigate the emergence of Sto:lo social complexity. The primary assumption of this research is that the physical structure of the house itself is an accurate representation of its social counterpart, the household. Ethnohistorical and ethnographic data demonstrate that Sto:lo house size and architectural design relate to the size, status, and socio-economic behaviour of households. This thesis applies the model of household archaeology to the Scowlitz data and specifically questions how house size and architectural design change through time, and what these changes may indicate about the evolution of Sto:lo society. Structural features from four superimposed houses at the site document a general increase in house size over the past 3000 years, concurrent with increasingly greater investment being placed in house construction. These changes appear to correspond to transformations in the social and economic organization of ancient Sto:lo society, however future research is necessary to build on the Scowlitz material, and further define the relationship between house form, the household, and social change.
Spleen segmentation and volume estimation using a gradient vector flow based snake model
Creators: name: Saiprasad, Ganesh
Publisher: name: Maryland Shared Open Access Repository
Year: 2008
Subjects: Active contours
Spleen segmentation
Volume estimation
Engineering, Electronics and Electrical (0544)

description: Computing volumes of abdominal soft organs such as liver, spleen, etc. is important in clinical diagnosis. Splenic injury is the most common soft organ injury seen in Level 1 trauma centers, most often resulting from blunt abdominal trauma sustained in motor vehicle collisions. For soft organ volumetry, different imaging techniques such as Ultrasonography (US), Computed Tomography (CT), and Magnetic Resonance (MR) imaging have been used, all of which have been performed by using different measurement techniques and yield variable results. Cross-sectional imaging used for volumetric assessment requires applications of mathematical algorithms for segmentation involving manual or automated segmentation of the organs of interest. In this thesis CT images are used and a new kind of snake model that permits the snake model to start far from the object, in our case the spleen and yet still draws it towards the object, and forces it into boundary concavities. The proposed snake model is based on a new type of external force field, called gradient vector flow (GVF) which is computed as a spatial diffusion of the gradient of an edge map derived from the image. This computation causes diffuse forces to exist far from the object, and crisp force vectors near the edges. Volumetric information about abdominal organs is not routinely generated for clinical use mainly because accurate, reliable, and operationally practical segmentation algorithms are not readily available. Our system has focused on reliable segmentation of the spleen and computation of its volume.
title: Резание материалов. Инструментальная оснастка
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2021

description: В учебном пособии рассмотрены прогрессивные конструкции вспомогательного инструмента и специальных приспособлений для современных автоматизированных производств, обеспечивающих высокоскоростное и высокопроизводительное резание современных материалов. Приведены конструкции устройств для подвода смазывающе-охлаждающих технологических сред в зону резания. Подготовлено с учетом требований Федерального государственного образовательного стандарта высшего образования. Учебное пособие предназначено для студентов укрупненной группы специальностей и направлений подготовки 15.00.00 «Машиностроение», изучающих дисциплины «Резание материалов», «Режущий инструмент», «Современные инструментальные материалы в процессах резания», «Проектирование технологической оснастки», «Технологическая оснастка». Может быть полезно технологам машиностроительных предприятий.
SPECTROSCOPIC ANALYSIS OF HOLUMIUM DOPED Y2O3, YAG, AND LuAG FOR HIGH POWER LASER GAIN MATERIAL
Creators: name: Word-Daniels, Akil Tarik
Publisher: name: Maryland Shared Open Access Repository
Year: 2010
Subjects: Holmium
LuAG
Spectroscopy
Y2O3
YAG
Yttrium Oxide

description: Spectroscopic properties of Ho3+-doped Yttria (Y2O3), LuAG (Lu3Al5O12), and YAG (Y3Al5O12) were studied at wavelengths around 2?m using ground state absorption for efficient, high power, eye-safe laser operation.  High resolution measurements of absorption and stimulated emission cross sections and radiative lifetimes of Ho3+ in these hosts were studied at a range of temperature from 77K to 300K.  These results contributed to the construction of the first Ho: Y2O3 laser at 2.1?m.
The mother of all protocols: Restructuring quantum information's family tree
Creators: name: Abeyesinghe, Anura
name: Devetak, Igor
name: Hayden, Patrick
name: Winter, Andreas
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We give a simple, direct proof of the "mother" protocol of quantum information theory. In this new formulation, it is easy to see that the mother, or rather her generalization to the fully quantum Slepian-Wolf protocol, simultaneously accomplishes two goals: quantum communication-assisted entanglement distillation, and state transfer from the sender to the receiver. As a result, in addition to her other "children," the mother protocol generates the state merging primitive of Horodecki, Oppenheim and Winter, a fully quantum reverse Shannon theorem, and a new class of distributed compression protocols for correlated quantum sources which are optimal for sources described by separable density operators. Moreover, the mother protocol described here is easily transformed into the so-called "father" protocol whose children provide the quantum capacity and the entanglement-assisted capacity of a quantum channel, demonstrating that the division of single-sender/single-receiver protocols into two families was unnecessary: all protocols in the family are children of the mother.
description: 25 pages, 6 figures
A restless supermassive black hole in the galaxy J0437+2456
Creators: name: Pesce, Dominic W.
name: Seth, Anil C.
name: Greene, Jenny E.
name: Braatz, James A.
name: Condon, James J.
name: Kent, Brian R.
name: Krajnović, Davor
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the results from an observing campaign to confirm the peculiar motion of the supermassive black hole (SMBH) in J0437+2456 first reported in Pesce et al. (2018). Deep observations with the Arecibo Observatory have yielded a detection of neutral hydrogen (HI) emission, from which we measure a recession velocity of 4910 km s$^{-1}$ for the galaxy as a whole. We have also obtained near-infrared integral field spectroscopic observations of the galactic nucleus with the Gemini North telescope, yielding spatially resolved stellar and gas kinematics with a central velocity at the innermost radii ($0.1^{\prime \prime} \approx 34$ pc) of 4860 km s$^{-1}$. Both measurements differ significantly from the $\sim$4810 km s$^{-1}$ H$_2$O megamaser velocity of the SMBH, supporting the prior indications of a velocity offset between the SMBH and its host galaxy. However, the two measurements also differ significantly from one another, and the galaxy as a whole exhibits a complex velocity structure that implies the system has recently been dynamically disturbed. These results make it clear that the SMBH is not at rest with respect to the systemic velocity of the galaxy, though the specific nature of the mobile SMBH -- i.e., whether it traces an ongoing galaxy merger, a binary black hole system, or a gravitational wave recoil event -- remains unclear.
description: 17 pages, 8 figures, accepted for publication in ApJ
MAMMOTH: Confirmation of Two Massive Galaxy Overdensities at $z=2.24$ with H$α$ Emitters
Creators: name: Zheng, XianZhong
name: Cai, Zheng
name: An, FangXia
name: Fan, Xiaohui
name: Shi, DongDong
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Massive galaxy overdensities at the peak epoch of cosmic star formation provide ideal testbeds for the formation theories of galaxies and large-scale structure. We report the confirmation of two massive galaxy overdensities at $z=2.24$, BOSS1244 and BOSS1542, selected from the MAMMOTH project using Ly$α$ absorption from the intergalactic medium over the scales of 15$-$30 $h^{-1}$ Mpc imprinted on the quasar spectra. We use H$α$ emitters (HAEs) as the density tracer and identify them using deep narrowband $H_2S1$ and broadband $K_{\rm s}$ imaging data obtained with CFHT/WIRCam. In total, 244 and 223 line emitters are detected in these two fields, and $196\pm 2$ and $175\pm 2$ are expected to be HAEs with an H$α$ flux of $> 2.5\times 10^{-17}$ erg s$^{-1}$ cm$^{-2}$ (corresponding to an SFR of $>$5 M$_\odot$ yr$^{-1}$). The detection rate of HAE candidates suggests an overdensity factor of $δ_{\rm gal}=5.6\pm0.3$ and $4.9\pm0.3$ over the volume of $54\times32\times32$ cMpc$^3$. The overdensity factor increases $2-3$ times when focusing on the high-density regions of scales $10-15$ cMpc. Interestingly, the HAE density maps reveal that BOSS1244 contains a dominant structure, while BOSS1542 manifests as a giant filamentary structure. We measure the H$α$ luminosity functions (HLF), finding that BOSS1244's HLF is nearly identical to that of the general field at the same epoch, while BOSS1542 shows an excess of HAEs with high H$α$ luminosity, indicating the presence of enhanced star formation or AGN activity. We conclude that the two massive MAMMOTH overdensities are undergoing a rapid galaxy mass assembly.
description: 12 pages, 9 figures, accepted for publication in MNRAS
Hyperspherical Partial Wave Theory with Two-term Error Correction
Creators: name: Paul, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Hyperspherical Partial Wave Theory has been applied to calculate T-matrix elements and Single Differential Cross-Section (SDCS) results for electron-hydrogen ionization process within Temkin-Poet model potential. We considered three different values of step length to compute the radial part of final state wave function. Numerical outcomes show that T-matrix elements and SDCS values depend on the step length h. Here, we have presented T-matrix elements and the corresponding SDCS results for 0.0075 a.u., 0.009 a.u. and 0.01 a.u. values of h and for 27.2eV, 40.8ev and 54.4eV impact energies. With the help of the calculated data for three different step lengths, we have been able to evaluate a two-term error function depending on the step length h. Finally, two-term error corrected T-matrix elements and the corresponding SDCS values have been computed. We fitted our two-term error corrected SDCS results by a suitable curve and compared with the benchmark results of Jones et al. [Phys. Rev. A, 66, 032717 (2002)]. Our fitted curves agree very well with the calculated results of Jones et al. and two-term error corrected SDCS results somewhere agree with the benchmark results. Two-term error corrected SDCS results are significantly better than the calculated SDCS results of different step lengths.
description: 9 pages, 18 figures
title: Резание металлов в автоматизированном производстве
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2021

description: В учебном пособии изложены особенности процессов обработки резанием в условиях автоматизированного производства (АП), включающего автоматическое металлорежущее оборудование с компьютерными системами управления и развитое технологическое оснащение. Показаны основные направления развития процессов обработки резанием с позиции обеспечения их высокой надежности. Освещены: современный подход к инструментальному обеспечению АП; методы повышения надежности работы режущего инструмента; основы выбора режущего инструмента по критерию минимальной себестоимости деталей при их автоматическом производстве; методика назначения режимов обработки резанием в автоматизированном производстве. Подготовлено с учетом требований Федерального государственного образовательного стандарта высшего образования. Учебное пособие будет полезно при изучении дисциплин «Режущий инструмент», «Современные инструментальные материалы в процессах резания», «Современные материалы в машиностроении» студентами направления подготовки 15.03.05 «Конструкторско-технологическое обеспечение машиностроительных производств».
Unification Without Doublet-Triplet Splitting
Creators: name: Kilian, W.
name: Reuter, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Matter-Higgs unification in string-inspired supersymmetric Grand Unified Theories predicts the existence of colored states in the Higgs multiplets and calls for two extra generations of Higgs-like fields ('unhiggses'). If these states are present near the TeV scale, gauge-coupling unification points to the existence of two distinct scales, 10^15 GeV where right-handed neutrinos and a Pati-Salam symmetry appear, and 10^18 GeV where complete unification is achieved. Baryon-number conservation, while not guaranteed, can naturally emerge from an underlying flavor symmetry. Collider signatures and dark-matter physics may be drastically different from the conventional MSSM.
description: 4 pages, 2 figures
High Energy Storage Efficiency and Large Electrocaloric Effect in Lead-Free BaTi0.89Sn0.11O3 Ceramic
Creators: name: Merselmiz, Soukaina
name: Hanani, Zouhair
name: Mezzane, Daoud
name: Spreitzer, Matjaz
name: Bradesko, Andraz
name: Fabijan, David
name: Vengust, Damjan
name: Hajji, Lahoucine
name: Abkhar, Zahra
name: Razumnaya, Anna
name: Rozic, Brigita
name: Lukyanchuk, Igor A.
name: Kutnjak, Zdravko
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Lead-free BaTi0.89Sn0.11O3 (BTSn) ceramic was elaborated via a solid-state reaction method and its dielectric, ferroelectric, energy storage, electromechanical as well as electrocaloric properties were investigated at 25 kV/cm. Pure perovskite structure was confirmed by X-ray diffraction analysis. The maximum of the dielectric constant was found to be 17390 at 41 °C. The enhanced total energy density, the recovered energy density, and the energy storage efficiency of 92.7 mJ/cm3, 84.4 mJ/cm3, and 91.04%, respectively, were observed at 60 °C, whereas the highest storage efficiency of 95.87 % was obtained at 100 °C. At room temperature, the electromechanical strain and the large-signal piezoelectric coefficient reached a maximum of 0.07 % and 280 pm/V. The large electrocaloric effect of 0.71 K and the electrocaloric responsivity of 0.28. 10-6 K.mm/kV at 49 °C under 25 kV/cm were indirectly calculated via Maxwell relation from the ferroelectric polarization P (T, E) that was determined from the P-E hysteresis loops. By exploiting the Landau-Ginzburg-Devonshire (LGD) phenomenological theory, the electrocaloric response was estimated to be of 0.61 K at 50 °C under 25 kV/cm. We conclude that BTSn lead-free ceramic is a promising candidate for potential applications in high-efficiency energy storage devices and solid-state refrigeration technology.
Zonal flow generation by modulational instability
Creators: name: Dewar, R. L.
name: Abdullatif, R. F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: This paper gives a pedagogic review of the envelope formalism for excitation of zonal flows by nonlinear interactions of plasma drift waves or Rossby waves, described equivalently by the Hasegawa-Mima (HM) equation or the quasigeostrophic barotropic potential vorticity equation, respectively. In the plasma case a modified form of the HM equation, which takes into account suppression of the magnetic-surface-averaged electron density response by a small amount of rotational transform, is also analyzed. Excitation of zonal mean flow by a modulated wave train is particularly strong in the modified HM case. A local dispersion relation for a coherent wave train is calculated by linearizing about a background mean flow and used to find the nonlinear frequency shift by inserting the nonlinearly excited mean flow. Using the generic nonlinear Schroedinger equation about a uniform carrier wave, the criterion for instability of small modulations of the wave train is found, as is the maximum growth rate and phase velocity of the modulations and zonal flows, in both the modified and unmodified cases.
description: Accepted for publication in the Proceedings of the CSIRO/COSNet Workshop on Turbulence and Coherent Structures, Canberra, Australia, 10-13 January 2006 (World Scientific, in preparation, eds. J.P. Denier and J.S. Frederiksen): 15 pages, 2 figures (3 figure files) - resubmitted to correct one-line overflow onto page 16
Relative roles of multiple scattering and Fresnel diffraction in the imaging of small molecules using electrons, Part II: Differential Holographic Tomography
Creators: name: Gureyev, T. E.
name: Quiney, H. M.
name: Kozlov, A.
name: Paganin, D. M.
name: Schmalz, G.
name: Allen, L. J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: It has been argued that in atomic-resolution transmission electron microscopy (TEM) of sparse weakly scattering structures, such as small biological molecules, multiple electron scattering usually has only a small effect, while the in-molecule Fresnel diffraction can be significant due to the intrinsically shallow depth of focus. These facts suggest that the three-dimensional reconstruction of such structures from defocus image series collected at multiple rotational orientations of a molecule can be effectively performed for each atom separately, using the incoherent first Born approximation. The corresponding reconstruction method, termed here Differential Holographic Tomography, is developed theoretically and demonstrated computationally on several numerical models of biological molecules. It is shown that the method is capable of accurate reconstruction of the locations of atoms in a molecule from TEM data collected at a small number of random orientations of the molecule, with one or more defocus images per orientation. Possible applications to cryogenic electron microscopy and other areas are briefly discussed.
description: 32 pages, 8 figures, version 5c (a few typos have been found in the previous version and fixed in the current version)
Moduli spaces of irreducible symplectic manifolds
Creators: name: Gritsenko, V.
name: Hulek, K.
name: Sankaran, G. K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Geometry (math.AG)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 14D20; 32N15

description: We study the moduli spaces of polarised irreducible symplectic manifolds. By a comparison with locally symmetric varieties of orthogonal type of dimension 20, we show that the moduli space of 2d polarised (split type) symplectic manifolds which are deformation equivalent to degree 2 Hilbert schemes of a K3 surface is of general type if d is at least 12.
description: Exposition improved, Reference to work of Debarre and Voisin added, Corollary 1.6 removed
title: Технологическая оснастка для высокоэффективного резания
Creators: name: ELS IPR BOOKS
Publisher: name: Профобразование, Ай Пи Ар Медиа
Year: 2021

description: В учебном пособии рассматривается специальная инструментальная оснастка для высокоскоростного и высокопроизводительного резания, а также оснастка для подачи смазочно-охлаждающих технологических сред в зону резания. Подготовлено с учетом требований Федерального государственного образовательного стандарта среднего профессионального образования. Учебное пособие будет полезно для студентов, обучающихся по специальности 15.02.15 «Технология металлообрабатывающего производства» и профессии 15.01.08 «Наладчик литейного оборудования», изучающих дисциплину «Технологическая оснастка».
title: Технологическая оснастка. Зажимные устройства
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2021

description: В учебном пособии рассмотрены компоненты технологической оснастки для обработки резанием в машиностроении, применяемые в приспособлениях для закрепления заготовок и в приспособлениях для закрепления режущего инструмента на металлорежущих станках. Подготовлено с учетом требований Федерального государственного образовательного стандарта высшего образования. Предназначено для студентов укрупненной группы специальностей и направлений подготовки 15.00.00 «Машиностроение», изучающих дисциплины «Проектирование технологической оснастки», «Технологическая оснастка».
title: Технологическое оборудование автоматизированного производства
Creators: name: ELS IPR BOOKS
Publisher: name: Профобразование, Ай Пи Ар Медиа
Year: 2021

description: В учебном пособии рассмотрены современное машиностроительное производство и его инструментальное обеспечение, гибкие производственные системы (ГПС) и их складские системы, инструментальное оснащение ГПС, автоматизация смены инструмента. Подготовлено в соответствии с Федеральным государственным образовательным стандартом среднего профессионального образования. Учебное пособие предназначено для изучения дисциплины «Технологическое оборудование» по специальности 15.02.08 «Технология машиностроения».
Response auf die "Chinesische Perspektive" von Zhixiong Li (Robert C. Li) auf Karl Barths Tambacher Vortrag
Creators: name: Pangritz, Andreas
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 69 Nr. 2 (2020): Ökumenische Rundschau, Band 69, Heft 2
Development of an on-line technique to assess mixing quality in pulp suspensions
Creators: name: Kamal, Noreen Rashda
Publisher: name: University of British Columbia
Year: 2009

description: Assessing the mixing quality in pulp suspensions is very important to pulp and paper processing because inhomogeneities lead to a low quality product. In the past, mixing has been assessed using a number of techniques including: The uniformity of inert tracers added to the suspension; the distribution of residual bleaching chemical following mixing and reaction; the temperature uniformity around the periphery of process piping; and by benchmarking the bleaching stage using various pulp quality parameters. Many of these techniques require removing and testing samples, which is a tedious procedure and it gives no indication of the variability of the mixing process over time. Furthermore, the major disadvantage with most of the techniques is that the response or sampling time is too large. Therefore, the objective of this work is to develop an on-line sensor to assess mixing quality. An on-line technique is described using an in-situ fibre optic probe. The technique measures the concentration of an inert ultraviolet fluorescent tracer added to the pulp suspension at the ppm level. The method has been tested in the laboratory and has been shown to give mixing quality indices that agree with other methods. The applicability of this technique in a mill is discussed; however, there are limitations in using this technique in an aggressive bleaching environments, especially in the presence of C102. This technique can easily be applicable in assessing mixing in stock chests, in the headbox of the paper machine, and in the extraction stage of the bleach plant.
Quarkonium suppression from SPS to RHIC (and from p+A to A+A)
Creators: name: de Cassagnac, Raphaël Granier
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Heavy quarkonia production is expected to be sensitive to the formation of a quark gluon plasma (QGP). It was (and still is with ongoing data analyses) extensively studied at the CERN SPS, at collision energy $\sqrt{s_{NN}}$ of the order of 20 GeV. An anomalous suppression was clearly observed. The PHENIX experiment at RHIC has presented preliminary results that exhibit a similar amount of $J/ψ$ suppression, at ten times higher collision energy. I review the results obtained at both facilities. While interpreting and comparing them, the importance of understanding normal nuclear effects is emphasized. A new method to derive a reference for Au+Au collisions from the centrality dependence of d+Au measurements at RHIC is exposed.
description: Plenary talk given at Hard Probes 2006, June 9-16, 2006, Asilomar, CA, USA; 8 pages, 8 figures
Sensitivity of a Low-Frequency Polarimetric Radio Interferometer
Creators: name: Sutinjo, A. T.
name: Sokolowski, M.
name: Kovaleva, M.
name: Ung, D. C. X.
name: Broderick, J. W.
name: Wayth, R. B.
name: Davidson, D. B.
name: Tingay, S. J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Aims: This paper aims to derive an expression for the sensitivity of a polarimetric radio interferometer that is valid for all-sky observations of arbitrarily polarized sources, with neither a restriction on FoV nor with any a priori assumption regarding the polarization state of the source. We verify the resulting formula with an all-sky observation using the Murchison Widefield Array (MWA) telescope. Methods: The sensitivity expression is developed from first principles by applying the concept of System Equivalent Flux Density (SEFD) to a polarimetric radio interferometer not by computing $A_e/T_{sys}$. The SEFD is calculated from the standard deviation of the noisy flux density estimate for a target source due to system noise. Results: The SEFD for a polarimetric radio interferometer is generally not $1/\sqrt{2}$ of a single-polarized interferometer as is often assumed for narrow FoV. This assumption can lead to significant errors for a dual-polarized dipole based system, which is common in low-frequency radio astronomy: up to $\sim 15\%$ for a zenith angle (ZA) coverage of $45^\circ$, and up to $\sim45\%$ for $60^\circ$ coverage. The worst case errors occur in the diagonal planes of the dipole for very wide FoV. This is demonstrated through theory, simulation and observations. Furthermore, using the resulting formulation, calculation of the off-zenith sensitivity is straightforward and unambiguous. Conclusions: For wide FoV observations pertinent to low-frequency radio interferometer such as the SKA-Low, the narrow FoV and the single-polarized sensitivity expressions are not correct and should be replaced by the formula derived in this paper.
description: 12 pages, 12 figures
Fig. S1;Fig. S2 from Genetic and behavioural factors affecting interpopulation colour pattern variation in two congeneric chameleon species
Creators: name: Keren-Rotem, Tammy
name: Main, Devon C.
name: Barocas, Adi
name: Donaire-Barroso, David
name: Haddas-Sasson, Michal
name: Vila, Carles
name: Shaharabany, Tal
name: Wolf, Lior
name: Tolley, Krystal A.
name: Geffen, Eli
Publisher: name: The Royal Society
Year: 2024
Subjects: classificationCode: 310399
subject: Ecology not elsewhere classified
classificationCode: 310499
subject: Evolutionary biology not elsewhere classified
classificationCode: 310901
subject: Animal behaviour

description: a) The experiment set-up is a straight wooden stick placed horizontally. The color board was our standard for adjusting the chameleon colors patterns to different light conditions. b) Record of color patterns on the lateral side and snout-vent size by photography (C. dilepis, South Africa). c) Record of color pattern changes during a social interaction (C. dilepis, South Africa).;Discriminant function analysis (DFA) for the vegetation and ground color at individual capture locations for Chamaeleo chamaeleon (a, b) and Chamaeleo dilepis (d, e), and violin plot for female and male SVL by site for Chamaeleo chamaeleon (c) and Chamaeleo dilepis (f). Sites are denoted by letters and color (Israel: CC - Carmel coast and WN - western Negev; Spain: CB - La Herradura and JE - Sanlúcar; South Africa: DN - Simbithi, MB - Maduma Boma, and ZF - Zulu Falls). Misclassification rate and sample size are presented above each DFA plot. Site centroids (crosses) and 95% CI ellipsoids are denoted by color.
Scalable Error Correction in Distributed Ion Trap Computers
Creators: name: Oi, Daniel K. L.
name: Devitt, Simon J.
name: Hollenberg, Lloyd C. L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A major challenge for quantum computation in ion trap systems is scalable integration of error correction and fault tolerance. We analyze a distributed architecture with rapid high fidelity local control within nodes and entangled links between nodes alleviating long-distance transport. We demonstrate fault-tolerant operator measurements which are used for error correction and non-local gates. This scheme is readily applied to linear ion traps which cannot be scaled up beyond a few ions per individual trap but which have access to a probabilistic entanglement mechanism. A proof-of-concept system is presented which is within the reach of current experiment.
description: 8 pages, 6 figures
Hysteresis and Linear Stability Analysis on Multiple Steady-State Solutions to the Poisson--Nernst--Planck equations with Steric Interactions
Creators: name: Ding, Jie
name: Sun, Hui
name: Zhou, Shenggao
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In this work, we numerically study linear stability of multiple steady-state solutions to a type of steric Poisson--Nernst--Planck (PNP) equations with Dirichlet boundary conditions, which are applicable to ion channels. With numerically found multiple steady-state solutions, we obtain $S$-shaped current-voltage and current-concentration curves, showing hysteretic response of ion conductance to voltages and boundary concentrations with memory effects. Boundary value problems are proposed to locate bifurcation points and predict the local bifurcation diagram near bifurcation points on the $S$-shaped curves. Numerical approaches for linear stability analysis are developed to understand the stability of the steady-state solutions that are only numerically available. Finite difference schemes are proposed to solve a derived eigenvalue problem involving differential operators. The linear stability analysis reveals that the $S$-shaped curves have two linearly stable branches of different conductance levels and one linearly unstable intermediate branch, exhibiting classical bistable hysteresis. As predicted in the linear stability analysis, transition dynamics, from a steady-state solution on the unstable branch to a one on the stable branches, are led by perturbations associated to the mode of the dominant eigenvalue. Further numerical tests demonstrate that the finite difference schemes proposed in the linear stability analysis are second-order accurate. Numerical approaches developed in this work can be applied to study linear stability of a class of time-dependent problems around their steady-state solutions that are computed numerically.
White paper on suitability of HNScienceCloud and European Open Science Cloud for synchrotron and FEL applications
Creators: name: Gotz, Andy
name: Salvat, Daniel
name: Schluenzen, Frank
name: Ashton, Alun
name: Dimper, Rudolf
Publisher: name: Zenodo
Year: 2021
Subjects: Calipsoplus
photon
neutron
EOSC
PaNOSC
ExPaNDS

description: This paper identifies the needs specific to synchrotrons and FELs towards the European Open Science Cloud (EOSC) and how these research infrastructures and their user communities can best take advantage of the EOSC. The CALIPSOplus project [http://www.calipsoplus.eu/] brings together all photon sources in Europe. A significant number of them have participated in the Joint Research Activity 2 (JRA2 also referred to as WP24), to develop a prototype of a remote Data Analysis as a Service (DAAS) platform. The prototype was deployed and tested at the participants site and an online workshop was held at the end of 2020 to present the results.
 The prototype DAAS service was instrumental in identifying the needs for remote analysis and cloud-like access to IT resources for photon research infrastructures. This experience furthermore allowed the authors to reflect on the promise on "The European Open Science Cloud (EOSC) is an environment for hosting and processing research data to support EU science" made by the EOSC and its application to photon sources.
 The paper starts by defining the needs of the Photon and Neutron (PaN) community towards cloud computing and then presents the achievements from JRA2. It then goes on to analyse the situation for photon sources according to the services recommended by the EOSC: FAIR data, data storage, data processing, data re-use. It continues with a brief overview of the Helix Nebula Science cloud and then proceeds to an overview of EOSC services, their state and suitability for the PaN RIs.