cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Design and Characterization of a Neutron Calibration Facility for the Study of sub-keV Nuclear Recoils
Creators: name: Barbeau, P. S.
name: Collar, J. I.
name: Whaley, P. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Astrophysics (astro-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: As part of an experimental effort to demonstrate sensitivity in a large-mass detector to the ultra-low energy recoils expected from coherent neutrino-nucleus elastic scattering, we have designed and built a highly monochromatic 24 keV neutron beam at the Kansas State University Triga Mark-II reactor. The beam characteristics were chosen so as to mimic the soft recoil energies expected from reactor antineutrinos in a variety of targets, allowing to understand the response of dedicated detector technologies in this yet unexplored sub-keV recoil range. A full characterization of the beam properties (intensity, monochromaticity, contaminations, beam profile) is presented, together with first tests of the calibration setup using proton recoils in organic scintillator.
description: submitted to Nucl. Instr. Meth. A
Η παρένθετη μητρότητα
Creators: name: Χατζηδημητρίου, Κυριάκος Αθανασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Παρένθετη μητρότητα
Ιατρικώς υποβοηθούμενη αναπαραγωγή
Συγγένεια
Surrogate motherhood
Medically assisted reproduction
Relationship

description: Η εξέλιξη της βιοτεχνολογίας και της ιατρικής είχε ως αποτέλεσμα την ανάπτυξη μεθόδων ιατρικώς υποβοηθούμενης αναπαραγωγής. Σκοπός της διπλωματικής εργασίας ήταν η μελέτη της παρένθετης μητρότητας, η οποία είναι μία από τις μεθόδους ιατρικώς υποβοηθούμενης αναπαραγωγής. Στο πρώτο μέρος της εργασίας έγινε συνοπτική παρουσίαση των ηθικών προβληματισμών που έχει προκαλέσει η παρένθετη μητρότητα. Το δεύτερο μέρος αφορούσε το συγκριτικό δίκαιο. Στο τρίτο μέρος αναπτύχθηκε το ελληνικό νομικό πλαίσιο για την παρένθετη μητρότητα.
description: The evolution of biotechnology and medicine resulted in the development of methods of medically assisted reproduction. The aim of this thesis was the study of surrogacy, which is one of the methods of medically assisted reproduction. The first part of the study was a summary of ethical considerations related to surrogacy. The second part concerned the comparative law. In the third part was developed the Greek legal framework for surrogacy.
Effects of Isotope Substitution on Local Heating and Inelastic current in Hydrogen Molecular Junctions
Creators: name: Chen, Yu-Chang
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Using first principle approaches, we investigate the effects of isotope substitution on the inelastic features in the hydrogen molecular junction. We observe thatlocal heating and inelastic current have significant isotope-substitution effects. Due to the contact characters, the energies of excited molecular vibrationsare inverse proportional to the square root of the mass. The heavier the molecule, the smaller the onset bias. In the $H_{2}$ and $D_{2}$ junctions, the heavier molecule has a smaller magnitude of electron-vibration interaction. Consequently, there is a crossing in the local temperature around $80 K$. In the HD junction, the electron-vibration interaction is enhanced by asymmetric distribution in mass. It leads to the largest discontinuity in the differential conductance and the most prominent heating in the HD junction. We predict that the junction instability is relevant to isotope substitution. The HD junction has the smallest breakdown voltage compared with the $H_{2}$ and $D_{2}$ junction.
Luminosity Performance of the Compact Linear Collider at 380 GeV with Static and Dynamic Imperfections
Creators: name: Gohil, C.
name: Burrows, P. N.
name: Kraljevic, N. Blaskovic
name: Latina, A.
name: Ögren, J.
name: Schulte, D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: The Compact Linear Collider is one of the two main European options for a collider in a post Large Hadron Collider era. This is a linear $e^+e^-$ collider with three centre-of-mass energy stages: 380 GeV, 1.5 TeV and 3 TeV. The luminosity performance of the first stage at 380 GeV is presented including the impact of static and dynamic imperfections. These calculations are performed with fully realistic tracking simulations from the exit of the damping rings to the interaction point and including beam-beam effects in the collisions. A luminosity of $4.3\times10^{34}\,\text{cm}^{-2}\text{s}^{-1}$ can be achieved with a perfect collider, which is almost three times the nominal luminosity target of $1.5\times10^{34}\,\text{cm}^{-2}\text{s}^{-1}$. In simulations with static imperfections, a luminosity of $2.35\times10^{34}\,\text{cm}^{-2}\text{s}^{-1}$ or greater is achieved by 90% of randomly misaligned colliders. Expressed as a percentage of the nominal luminosity target, this is a surplus of approximately 57%. Including the impact of ground motion, a luminosity surplus of 53% or greater can be expected for 90% of colliders. The average expected luminosity is $2.8\times10^{34}~\text{cm}^{-2}\text{s}^{-1}$, which is almost twice the nominal luminosity target.
On Jones knot invariants and Vassiliev invariants
Creators: name: Zhu, Jun
Publisher: name: University of British Columbia
Year: 2009

description: The main objective of this thesis is to study invariants of knots and links. First, a minimal system is associated to each link diagram D. This minimal system is an “an tichain” in the partially ordered set of all possible functions from the crossings of D to {—1, 1}. Such a system is then shown to be an effective tool for determining the highest degree as well as the span of the Kauffman bracket (D). When applied to a diagram D with n crossings which is “dealternator connected” and “rn-alternating”, the upper bound span (D) ≤ 4(n—m) is obtained. This is a best possible result providing a negative answer to the conjecture posed by C.Adams et al. Next, some examples are presented to show that a semi-alternating diagram need not be minimal. This disproves a conjecture posed by K.Murasugi. For knots and links, if J(t) is a so-called generalized Jones invariant, then J(n)(1), the n-th derivative of J(t) evaluated at t = 1, is a Vassiliev invariant. On the other hand, while the coefficients of the classical Conway polynomial are Vassiliev invariants, the coefficients of the Jones polynomial are now shown not to be Vassiliev invariants. An interesting property of Vassiliev invariants is then given to prove many known results in a uniform manner. It is known that all the Vassiliev invariants with order less than or equal to n form a vector space called the n-th Vassiliev space. It turns out that two lens spaces have the same Vassiliev spaces if and only if their fundamental groups are isomorphic. Consequently, Vassiliev spaces do not distinguish manifolds.
Interference traps waves in open system: Bound states in the continuum
Creators: name: Sadreev, Almas F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: I review the four mechanisms of bound states in the continuum (BICs) in application to microwave and acoustic cavities open to directional waveguides. The most simple are the symmetry protected BICs which are localized inside the cavity because of the orthogonality of the eigenmodes to the propagating modes of waveguides. However, the most general and interesting is the Friedrich-Wintgen mechanism when the BICs are result of full destructive interference of outgoing resonant modes. The third type of the BICs, the Fabry-Perot BICs, occur in a double resonator system when each resonator can serve as an ideal mirror. At last, the accidental BICs can be realized in the open cavities with no symmetry like the open Sinai billiard in which the eigenmode of the resonator can become orthogonal to the continuum of the waveguide accidentally by a smooth deformation of the eigenmode. We also review the one-dimensional systems in which the BICs occur owing to full destructive interference of two waves separated by spin or polarization or by paths in the Aharonov-Bohm rings. We widely use the method of effective non-Hermitian Hamiltonian equivalent to the coupled mode theory which detects bound states in the continuum (BICs) by finding zero widths resonances.
description: Review: 48 pages, 42 figures
Assessing the Influencing Factors on the Accuracy of Underage Facial Age Estimation
Creators: name: Anda, Felix
name: Becker, Brett A.
name: Lillis, David
name: Le-Khac, Nhien-An
name: Scanlon, Mark
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Swift response to the detection of endangered minors is an ongoing concern for law enforcement. Many child-focused investigations hinge on digital evidence discovery and analysis. Automated age estimation techniques are needed to aid in these investigations to expedite this evidence discovery process, and decrease investigator exposure to traumatic material. Automated techniques also show promise in decreasing the overflowing backlog of evidence obtained from increasing numbers of devices and online services. A lack of sufficient training data combined with natural human variance has been long hindering accurate automated age estimation -- especially for underage subjects. This paper presented a comprehensive evaluation of the performance of two cloud age estimation services (Amazon Web Service's Rekognition service and Microsoft Azure's Face API) against a dataset of over 21,800 underage subjects. The objective of this work is to evaluate the influence that certain human biometric factors, facial expressions, and image quality (i.e. blur, noise, exposure and resolution) have on the outcome of automated age estimation services. A thorough evaluation allows us to identify the most influential factors to be overcome in future age estimation systems.
SPITZER IRS spectra of Virgo early type galaxies: detection of stellar silicate emission
Creators: name: Bressan, A.
name: Panuzzo, P.
name: Buson, L.
name: Clemens, M.
name: Granato, G. L.
name: Rampazzo, R.
name: Silva, L.
name: Valdes, J. R.
name: Vega, O.
name: Danese, L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present high signal to noise ratio Spitzer Infrared Spectrograph observations of 17 Virgo early-type galaxies. The galaxies were selected from those that define the colour-magnitude relation of the cluster, with the aim of detecting the silicate emission of their dusty, mass-losing evolved stars. To flux calibrate these extended sources we have devised a new procedure that allows us to obtain the intrinsic spectral energy distribution and to disentangle resolved and unresolved emission within the same object. We have found that thirteen objects of the sample (76%) are passively evolving galaxies with a pronounced broad silicate feature which is spatially extended and likely of stellar origin, in agreement with model predictions. The other 4 objects (24%) are characterized by different levels of activity. In NGC 4486 (M 87) the line emission and the broad silicate emission are evidently unresolved and, given also the typical shape of the continuum, they likely originate in the nuclear torus. NGC 4636 shows emission lines superimposed on extended (i.e. stellar) silicate emission, thus pushing the percentage of galaxies with silicate emission to 82%. Finally, NGC 4550 and NGC 4435 are characterized by polycyclic aromatic hydrocarbon (PAH) and line emission, arising from a central unresolved region. A more detailed analysis of our sample, with updated models, will be presented in a forthcoming paper.
description: 6 pages; ApJ Letters, accepted
Photogalvanic current in artificial asymmetric nanostructures
Creators: name: Chepelianskii, A. D.
name: Entin, M. V.
name: Magarill, L. I.
name: Shepelyansky, D. L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We develop a theoretic description of the photogalvanic current induced by a high frequency radiation in asymmetric nanostructures and show that it describes well the results of numerical simulations. Our studies allow to understand the origin of the electronic ratchet transport in such systems and show that they can be used for creation of new types of detectors operating at room temperature in a terahertz radiation range.
description: 11 pages, 9 figs, EPJ latex style
A symmetry test for quasilinear coupled systems
Creators: name: Sokolov, Vladimir V.
name: Wolf, Thomas
Publisher: name: arXiv
Year: 2006
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: All quasilinear NLS-type systems with fourth order symmetry are listed. Vector generalizations of some of them are constructed. Local master symmetries for several systems from the list are found.
A Low-Power Time-to-Digital Converter for the CMS Endcap Timing Layer (ETL) Upgrade
Creators: name: Zhang, Wei
name: Sun, Hanhan
name: Edwards, Christopher
name: Gong, Datao
name: Huang, Xing
name: Liu, Chonghan
name: Liu, Tiankuan
name: Liu, Tiehui
name: Olsen, Jamieson
name: Sun, Quan
name: Sun, Xiangming
name: Wu, Jinyuan
name: Ye, Jingbo
name: Zhang, Li
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Systems and Control (eess.SY)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We present the design and test results of a Time-to-Digital-Converter (TDC). The TDC will be a part of the readout ASIC, called ETROC, to read out Low-Gain Avalanche Detectors (LGADs) for the CMS Endcap Timing Layer (ETL) of High-Luminosity LHC upgrade. One of the challenges of the ETROC design is that the TDC is required to consume less than 200 W for each pixel at the nominal hit occupancy of 1%. To meet the low-power requirement, we use a single delay line for both the Time of Arrival (TOA) and the Time over Threshold (TOT) measurements without delay control. A double-strobe self-calibration scheme is used to compensate for process variation, temperature, and power supply voltage. The TDC is fabricated in a 65 nm CMOS technology. The overall performances of the TDC have been evaluated. The TOA has a bin size of 17.8 ps within its effective dynamic range of 11.6 ns. The effective measurement precision of the TOA is 5.6 ps and 9.9 ps with and without the nonlinearity correction, respectively. The TDC block consumes 97 W at the hit occupancy of 1%. Over a temperature range from 23 C to 78 C and a power supply voltage range from 1.05 V to 1.35 V (the nominal value of 1.20 V), the self-calibrated bin size of the TOA varies within 0.4%. The measured TDC performances meet the requirements except that more tests will be performed in the future to verify that the TDC complies with the radiation-tolerance specifications.
description: 8 pages, 16 figures. 22nd IEEE Real Time Conference
Usability Dimensions and Behavioral Intention to Use Markdown to Moodle in Test Construction
Creators: name: Garcia, Julius G.
name: Aunario, Connie C.
name: Gunawan, Go Frendi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Creating test with numerous items in Moodle can be tedious and less intuitive compared to conventional method. This study aims to determine the Markdown to Moodle performance in easing the test construction process and explain the underlying factors of the behavioral intention to use the application. Markdown to Moodle is an application that allows users to type the bulk of test items directly to the browser and generates .doc, .md and .xml files stored in the local drive. The .xml can be imported to Moodle test bank. This lessens the time of creating test items one at a time in the Moodle. A training and a survey were conducted among teachers with Moodle usage experience. Results from this study allowed the researchers to determine the usability of the application and the users behavioral intention. This highlights the workflow continuity in test construction as a key factor in the usage and performance of the application.
description: IJEMT, Vol. 13, No. 1, 2019, pp.44 to 53, ISSN 1882 2290
Generating self-map monoids of infinite sets
Creators: name: Mesyan, Zachary
Publisher: name: arXiv
Year: 2007
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 20M20, 20B07

description: Let I be a countably infinite set, S = Sym(I) the group of permutations of I, and E = End(I) the monoid of self-maps of I. Given two subgroups G, G' of S, let us write G \approx_S G' if there exists a finite subset U of S such that the groups generated by G \cup U and G' \cup U are equal. Bergman and Shelah showed that the subgroups which are closed in the function topology on S fall into exactly four equivalence classes with respect to \approx_S. Letting \approx denote the obvious analog of \approx_S for submonoids of E, we prove an analogous result for a certain class of submonoids of E, from which the theorem for groups can be recovered. Along the way, we show that given two subgroups G, G' of S which are closed in the function topology on S, we have G \approx_S G' if and only if G \approx G' (as submonoids of E), and that cl_S (G) \approx cl_E (G) for every subgroup G of S (where cl_S (G) denotes the closure of G in the function topology in S and cl_E (G) its closure in the function topology in E).
description: 26 pages. In the second version several of the arguments have been simplified, references to related literature have been added, and a few minor errors have been corrected
A single inverse-designed photonic structure that performs parallel computing
Creators: name: Camacho, Miguel
name: Edwards, Brian
name: Engheta, Nader
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Signal Processing (eess.SP)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In the search for improved computational capabilities, conventional microelectronic computers are facing various problems arising from the miniaturization and concentration of active electronics devices (1-2). Therefore, researchers have been exploring several paths for the next generation of computing platforms, which could exploit various physical phenomena for solving mathematical problems at higher speeds and larger capacities. Among others, physical systems described by waves, such as photonic and quantum devices, have been utilized to compute the solution of mathematical problems (1-18). However, previous devices have not fully exploited the linearity of the wave equation, which as we show here, allows for the simultaneous parallel solution of several independent mathematical problems within the same device. In this Letter, we demonstrate, theoretically and experimentally, that a transmissive cavity filled with a judiciously tailored dielectric distribution and embedded in a multi-frequency feedback loop can calculate the solutions of an arbitrary number of mathematical problems simultaneously. We design, build, and test a computing structure at microwave frequencies that solves two independent integral equations with any two arbitrary inputs. We offer another design that can invert four arbitrary 5x5 matrices, confirming its functionality with numerical simulations. We believe our results presented here can provide "coincident computing" and pave the way for the design of low-power, ultrafast, parallel photonic analog computing devices for sensing and signal processing in embedded computing applications.
description: 15 pages (including supplementary materials), 3 figures
A Lane-Changing Prediction Method Based on Temporal Convolution Network
Creators: name: Zhang, Yue
name: Zou, Yajie
name: Tang, Jinjun
name: Liang, Jian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Lane-changing is an important driving behavior and unreasonable lane changes can result in potentially dangerous traffic collisions. Advanced Driver Assistance System (ADAS) can assist drivers to change lanes safely and efficiently. To capture the stochastic time series of lane-changing behavior, this study proposes a temporal convolutional network (TCN) to predict the long-term lane-changing trajectory and behavior. In addition, the convolutional neural network (CNN) and recurrent neural network (RNN) methods are considered as the benchmark models to demonstrate the learning ability of the TCN. The lane-changing dataset was collected by the driving simulator. The prediction performance of TCN is demonstrated from three aspects: different input variables, different input dimensions and different driving scenarios. Prediction results show that the TCN can accurately predict the long-term lane-changing trajectory and driving behavior with shorter computational time compared with two benchmark models. The TCN can provide accurate lane-changing prediction, which is one key information for the development of accurate ADAS.
White Organic Light-Emitting Diodes with fine chromaticity tuning via ultrathin layer position shifting
Creators: name: Choukri, Hakim
name: Fischer, Alexis
name: Forget, Sebastien
name: Chenais, Sebastien
name: Castex, Marie-Claude
name: Ades, Dominique
name: Siove, Alain
name: Geffroy, Bernard
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Non-doped white organic light-emitting diodes using an ultrathin yellow-emitting layer of rubrene (5,6,11,12-tetraphenylnaphtacene) inserted on either side of the interface between a hole-transporting NPB (4,4'-bis[N-(1-naphtyl)-N-phenylamino]biphenyl) layer and a blue-emitting DPVBi (4,4'-bis(2,2'-diphenylvinyl)-1,1'-biphenyl) layer are described. Both the thickness and the position of the rubrene layer allow fine chromaticity tuning from deep-blue to pure-yellow via bright-white with CIE coordinates (x= 0.33, y= 0.32), a external quantum efficiency of 1.9%, and a color rendering index of 70. Such a structure also provides an accurate sensing tool to measure the exciton diffusion length in both DPVBi and NPB (8.7 and 4.9 nm respectively).
Reported Energy Intake Accuracy Compared to Doubly Labeled Water and Usability of the Mobile Food Record among Community Dwelling Adults
Creators: name: Boushey, Carol J.
name: Spoden, Melissa
name: Delp, Edward J.
name: Zhu, Fengqing
name: Bosch, Marc
name: Ahmad, Ziad
name: Shvetsov, Yurii B.
name: DeLany, James P.
name: Kerr, Deborah A.
Publisher: name: Technische Universität Berlin
Year: 2017
Subjects: subject: 610 Medizin und Gesundheit
subject: dietary assessment
subject: mobile food record
subject: image-based dietary assessment
subject: doubly labeled water
subject: adults

description: The mobile Food Record (mFR) is an image-based dietary assessment method for mobile devices. The study primary aim was to test the accuracy of the mFR by comparing reported energy intake (rEI) to total energy expenditure (TEE) using the doubly labeled water (DLW) method. Usability of the mFR was assessed by questionnaires before and after the study. Participants were 45 community dwelling men and women, 21–65 years. They were provided pack-out meals and snacks and encouraged to supplement with usual foods and beverages not provided. After being dosed with DLW, participants were instructed to record all eating occasions over a 7.5 days period using the mFR. Three trained analysts estimated rEI from the images sent to a secure server. rEI and TEE correlated significantly (Spearman correlation coefficient of 0.58, p < 0.0001). The mean percentage of underreporting below the lower 95% confidence interval of the ratio of rEI to TEE was 12% for men (standard deviation (SD) ± 11%) and 10% for women (SD ± 10%). The results demonstrate the accuracy of the mFR is comparable to traditional dietary records and other image-based methods. No systematic biases could be found. The mFR was received well by the participants and usability was rated as easy.
A Bio-Polymer Transistor: Electrical Amplification by Microtubules
Creators: name: Priel, Avner
name: Ramos, Arnolt J.
name: Tuszynski, Jack A.
name: Cantiello, Horacio F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Subcellular Processes (q-bio.SC)
subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences

description: Microtubules (MTs) are important cytoskeletal structures, engaged in a number of specific cellular activities, including vesicular traffic, cell cyto-architecture and motility, cell division, and information processing within neuronal processes. MTs have also been implicated in higher neuronal functions, including memory, and the emergence of "consciousness". How MTs handle and process electrical information, however, is heretofore unknown. Here we show new electrodynamic properties of MTs. Isolated, taxol-stabilized microtubules behave as bio-molecular transistors capable of amplifying electrical information. Electrical amplification by MTs can lead to the enhancement of dynamic information, and processivity in neurons can be conceptualized as an "ionic-based" transistor, which may impact among other known functions, neuronal computational capabilities.
description: This is the final submitted version. The published version should be downloaded from Biophysical Journal
Proceedings of the Eleventh International Workshop on Graph Computation Models
Creators: name: Hoffmann, Berthold
name: Minas, Mark
Publisher: name: arXiv
Year: 2020
Subjects: subject: Formal Languages and Automata Theory (cs.FL)
subject: Symbolic Computation (cs.SC)
subject: FOS: Computer and information sciences

description: Graphs are common mathematical structures that are visual and intuitive. They constitute a natural and seamless way for system modelling in science, engineering and beyond, including computer science, biology, business process modelling, etc. Graph computation models constitute a class of very high-level models where graphs are first-class citizens. The aim of the International GCM Workshop series is to bring together researchers interested in all aspects of computation models based on graphs and graph transformation. It promotes the cross-fertilizing exchange of ideas and experiences among senior and young researchers from the different communities interested in the foundations, applications, and implementations of graph computation models and related areas.
description: This volume contains the post-proceedings of the Eleventh International Workshop on Graph Computation Models (GCM 2020). The workshop was originally planned as part of STAF 2020 (Software Technologies: Applications and Foundations), to be held in Bergen, Norway, but then held as an online-workshop on 24th June 2020, because of the COVID-19 pandemic
Dynamical Rearrangement of Theta Parameter in Presence of Mixed Chern-Simons Term
Creators: name: Haba, Naoyuki
name: Kawamura, Yoshiharu
name: Oda, Kin-ya
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the five-dimensional SU(3)_c x U(1)_C gauge theory on the orbifold S^1/Z_2 with a mixed Chern-Simons term. We particularly pay attention to the realization of the dynamical rearrangement of the theta parameter for SU(3)_c. It is shown that the physics remains invariant under a large gauge transformation which even changes the action, completely removing the theta parameter, because of the Hosotani mechanism for the U(1)_C gauge interactions. In other words, we show that the theta parameter can be regarded as a boundary condition for the orbifolding in light of the dynamical rearrangement.
description: 14 pages (v1); Comments and references added, version to appear in Physical Review D (v2)
Dynamical Crystallites of Active Chiral Particles
Creators: name: Huang, Zhi-Feng
name: Menzel, Andreas M.
name: Löwen, Hartmut
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: One of the intrinsic characteristics of far-from-equilibrium systems is the nonrelaxational nature of the system dynamics, which leads to novel properties that cannot be understood and described by conventional pathways based on thermodynamic potentials. Of particular interest are the formation and evolution of ordered patterns composed of active particles that exhibit collective behavior. Here we examine such a type of nonpotential active system, focusing on effects of coupling and competition between chiral particle self-propulsion and self-spinning. It leads to the transition between three bulk dynamical regimes dominated by collective translative motion, spinning-induced structural arrest, and dynamical frustration. In addition, a persistently dynamical state of self-rotating crystallites is identified as a result of a localized-delocalized transition induced by the crystal-melt interface. The mechanism for the breaking of localized bulk states can also be utilized to achieve self-shearing or self-flow of active crystalline layers.
description: 7 pages, 5 figures, and 5 pages supplemental material
Beyond the acceptance limit of DRAGON: the case of the $\mathrm{^6Li(α,γ)^{10}B}$ reaction
Creators: name: Psaltis, A.
name: Chen, A. A.
name: Connolly, D. S.
name: Davids, B.
name: Gilardy, G.
name: Giri, R.
name: Greife, U
name: Huang, W.
name: Hutcheon, D. A.
name: Karpesky, J.
name: Lennarz, A.
name: Liang, J.
name: Paneru, M. Lovely. S. N.
name: Ruiz, C.
name: Tenkila, G.
name: Williams, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Radiative capture reactions play a pivotal role for our understanding of the origin of the elements in the cosmos. Recoil separators provide an effective way to study these reactions, in inverse kinematics, and take advantage of the use of radioactive ion beams. However, a limiting factor in the study of radiative capture reactions in inverse kinematics is the momentum spread of the product nuclei, which can result in an angular spread larger than the geometric acceptance of the separator. The DRAGON facility at TRIUMF is a versatile recoil separator, designed to study radiative capture reactions relevant to astrophysics in the $\mathrm{A \sim 10-30}$ region. In this work we present the first attempt to study with DRAGON a reaction, $\mathrm{^6Li(α,γ)^{10}B}$ , for which the recoil angular spread exceeds DRAGON's acceptance. Our result is in good agreement with the literature value, showing that DRAGON can measure resonance strengths of astrophysically important reactions even when not all the recoils enter the separator.
description: 11 pages, 8 figures, Accepted for publication in Nucl. Instrum. Methods. Phys. Res. A
Impact of covariance mismatched training samples on constant false alarm rate detectors
Creators: name: Besson, Olivier
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistics Theory (math.ST)
subject: Signal Processing (eess.SP)
subject: FOS: Mathematics
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The framework of this paper is that of adaptive detection in Gaussian noise with unknown covariance matrix when the training samples do not share the same covariance matrix as the vector under test. We consider a class of constant false alarm rate detectors which depend on two statistics $(β,\ttilde)$ whose distribution is parameter-free in the case of no mismatch and we analyze the impact of covariance mismatched training samples. More precisely, we provide a statistical representation of these two variables for an arbitrary mismatch. We show that covariance mismatch induces significant variations of the probability of false alarm and we investigate a way to mitigate this effect.
Systematic bias in the estimate of cluster mass and the fluctuation amplitude from cluster abundance statistics
Creators: name: Shimizu, Mamoru
name: Kitayama, Tetsu
name: Sasaki, Shin
name: Suto, Yasushi
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We revisit the estimate of the mass fluctuation amplitude, sigma_8, from the observational X-ray cluster abundance. In particular, we examine the effect of the systematic difference between the cluster virial mass estimated from the X-ray spectroscopy, M_{vir, spec}, and the true virial mass of the corresponding halo, M_{vir}. Mazzotta et al. (2004) recently pointed out the possibility that alpha_M = M_{vir, spec}/M_{vir} is systematically lower than unity. We perform the statistical analysis combining the latest X-ray cluster sample and the improved theoretical models and find that sigma_8 \sim 0.76 +/- 0.01 + 0.50 (1-alpha_M) for 0.5 \le alpha_M \le 1, where the quoted errors are statistical only. Thus if alpha_M \sim 0.7, the value of sigma_8 from cluster abundance alone is now in better agreement with other cosmological data including the cosmic microwave background, the galaxy power spectrum and the weak lensing data. The current study also illustrates the importance of possible systematic effects in mapping real clusters to underlying dark halos which changes the interpretation of cluster abundance statistics.
description: 13 pages, 4 figures. To appear in PASJ, April 25, 2006
Numerical prediction of film cooling of turbine blades using multiblock curvilinear grids
Creators: name: He, Pingfan
Publisher: name: University of British Columbia
Year: 2009

description: In the present thesis, a computational capability is developed for the prediction of film cooling of turbine blades. This includes the development of two comprehensive numerical codes and the associated methods. To address the difficulties associated with complex configurations of turbine blades and convergence problems, several numerical techniques are used, including curvilinear coordinate-based calculations, multigrid acceleration, do main segmentation and grid generation. Investigation and validation of these methods are carried out and novel techniques are proposed to achieve an efficient numerical solver. Two computer codes have been developed. One is a 3D curvilinear coordinate-based CFD code, called CMGFD, which can be used to calculate laminar/turbulent flows in arbitrary geometries using non-structured curvilinear grids. The methods developed here have been implemented into the codes. To support the application of the CMGFD code, a multigrid elliptic grid generation code, MBEGG, was developed which can be used to generate multi-block curvilinear grids for the CMGFD code. A multigrid method is used to solve the three elliptic grid generation equations thus providing an efficient grid generator. The developed computational codes are applied to study film cooling of an experimental turbine blade model. The computational domain follows the physical geometry which includes a curved blade surface and a number of injection holes. A block structured curvilinear grid is generated by the MBEGG code which exactly represents the inclined, round film-holes and the curved blade surface. The computational results show that the developed numerical tool has the potential to accurately model the complex cooling process in actual blade geometries.
High-Temperature Ultra-Broad UV-MIR High-Efficiency Absorber Based on Double Ring-Shaped Titanium Nitride Resonators
Creators: name: Cao, Shun
name: Jin, Yi
name: Dong, Hongguang
name: Guo, Tingbiao
name: Liu, Zhenchao
name: He, Jinlong
name: He, Sailing
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: An ultrabroad absorber based on double-ring-shaped titanium nitride (TiN) nanoresonators, which can work in high temperatures, is proposed and numerically studied. The absorber with some optimal parameters exhibits an averaged absorption of 94.6% in the range of 200 - 4000 nm (from ultraviolet to mid-infrared) and a band from 200 - 3518 nm having an absorption > 90%. We have demonstrated in detail the physical mechanisms of the ultra-broad absorption, including the dielectric lossy property of TiN material itself in shorter wavelengths and plasmonic resonances caused by the metallic property of TiN nano-resonators in longer wavelengths. In addition, the absorber shows polarization independent and wide-angle acceptance. Another absorber with double TiN nano-rings of different heights has flatter and higher absorption efficiency (more than 95% absorption) at 200-2860 nm waveband. These properties make the proposed absorbers based on TiN has great potentials in many applications, such as light trapping, photovoltaics, thermal emitters.
title: Autonomie et hétéronomie dans l'évaluation des politiques publiques : le cas de l'évaluation du plan d'amélioration de la mixité sociale dans les collèges du département de la Haute-Garonne
Creators: name: Bertolino, Isabelle
Publisher: name: La Revue LEeE
Year: 2022
Subjects: émancipation
évaluation
mixité sociale
référentialisation

description: Cet article questionne les notions d’autonomie et d’hétéronomie à travers le cas d’une recherche-intervention évaluative (R-I E), portant sur un dispositif de mixité sociale dans les collèges du département de la Haute-Garonne. S’appuyant tour à tour sur l’apprentissage organisationnel (Argyris & Schön, 2002) et la philosophie pragmatiste, nous établissons un lien entre la démarche de référentialisation (Figari, 1994) et les modalités de participation des acteur·rices mobilisé.es sur le dispositif. Nos résultats s’appuient sur l’observation participante durant 2 ans du processus d’évaluation mis en place. À partir des éléments du journal de terrain, nous analysons la mise en tension dans un rapport politique des parties prenantes et comment cette dynamique fait émerger de nouvelles perspectives quant à la détermination de ce qui a de la valeur. L’intégration dans l’évaluation du dispositif de cadres hétérogènes apparaît dès lors comme un enjeu démocratique et un enjeu pour le maintien et le développement du dispositif dans une perspective respectueuse de l’hétérogénéité des acteurs. La formation des valeurs, au sens de Dewey (1939/2011), va générer des postures d’engagement dans l’action évaluative ou d’extériorité critique. Cette dynamique dialogique nous paraît nécessaire comme vecteur d’apprentissage organisationnel. Elle est également le support à partir duquel nous repensons la façon de mobiliser les notions d’autonomie et d’hétéronomie dans une visée compréhensive.
Violation of the principle of Complementarity, and its implications
Creators: name: Afshar, Shahriar S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Bohr's principle of complementarity predicts that in a welcher weg ("which-way") experiment, obtaining fully visible interference pattern should lead to the destruction of the path knowledge. Here I report a failure for this prediction in an optical interferometry experiment. Coherent laser light is passed through a dual pinhole and allowed to go through a converging lens, which forms well-resolved images of the respective pinholes, providing complete path knowledge. A series of thin wires are then placed at previously measured positions corresponding to the dark fringes of the interference pattern upstream of the lens. No reduction in the resolution and total radiant flux of either image is found in direct disagreement with the predictions of the principle of complementarity. In this paper, a critique of the current measurement theory is offered, and a novel nonperturbative technique for ensemble properties is introduced. Also, another version of this experiment without an imaging lens is suggested, and some of the implications of the violation of complementarity for another suggested experiment to investigate the nature of the photon and its "empty wave" is briefly discussed.
description: 16 pages, 11 figures, SPIE conference 5866, "THE NATURE OF LIGHT: WHAT IS A PHOTON?", August 2005
Possible Atmospheric Diversity of Low Mass Exoplanets, some Central Aspects
Creators: name: Grenfell, John Lee
name: Leconte, Jeremy
name: Forget, François
name: Godolt, Mareike
name: Carrión-González, Óscar
name: Noack, Lena
name: Tian, Feng
name: Rauer, Heike
name: Gaillard, Fabrice
name: Bolmont, Émeline
name: Charnay, Benjamin
name: Turbet, Martin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Exoplanetary science continues to excite and surprise with its rich diversity. We discuss here some key aspects potentially influencing the range of exoplanetary terrestrial-type atmospheres which could exist in nature. We are motivated by newly emerging observations, refined approaches to address data degeneracies, improved theories for key processes affecting atmospheric evolution and a new generation of atmospheric models which couple physical processes from the deep interior through to the exosphere and consider the planetary-star system as a whole. Using the Solar System as our guide we first summarize the main processes which sculpt atmospheric evolution then discuss their potential interactions in the context of exoplanetary environments. We summarize key uncertainties and consider a diverse range of atmospheric compositions discussing their potential occurrence in an exoplanetary context.
Mutual information challenges entropy bounds
Creators: name: Casini, H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider some formulations of the entropy bounds at the semiclassical level. The entropy S(V) localized in a region V is divergent in quantum field theory (QFT). Instead of it we focus on the mutual information I(V,W)=S(V)+S(W)-S(V\cup W) between two different non-intersecting sets V and W. This is a low energy quantity, independent of the regularization scheme. In addition, the mutual information is bounded above by twice the entropy corresponding to the sets involved. Calculations of I(V,W) in QFT show that the entropy in empty space cannot be renormalized to zero, and must be actually very large. We find that this entropy due to the vacuum fluctuations violates the FMW bound in Minkowski space. The mutual information also gives a precise, cutoff independent meaning to the statement that the number of degrees of freedom increases with the volume in QFT. If the holographic bound holds, this points to the essential non locality of the physical cutoff. Violations of the Bousso bound would require conformal theories and large distances. We speculate that the presence of a small cosmological constant might prevent such a violation.
description: 10 pages, 2 figures, minor changes
Ο άρχοντας της ειρήνης: Ιστορία της ερμηνείας της μεσσιανικής προφητείας του Ησαΐα 9,1-7.
Creators: name: Αγγελόπουλος, Κωνσταντίνος Θεοφάνη
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Ησαΐας
Μεσσαινική προφητεία
Isaihah
Messianic prophecy

description: Σκοπός της εργασίας ήταν να μελετήσουμε με αντικειμενικότητα και προσοχή την μεσσιανική προφητεία του ενάτου κεφαλαίου του προφήτη Ησαΐα. Ερευνήσαμε την ακεραιότητα του κειμένου της προφητείας του 9ου κεφαλαίου, αλλά και την σύγκριση του ΜΚ με διάφορες αρχαίες ελληνικές μεταφράσεις στηρι¬ζόμενες σε διάφορες κριτικές εκδόσεις. Στη συνέχεια με την συμβολή συγχρόνων ελλήνων αλλά και ξένων ερευνητών και θεολόγων επιχειρήσαμε μία ερμηνευτική προσέγγιση του κειμένου. Ακόμη εξετάστηκε η θέση της προφητείας στην ιουδαϊκή γραμματεία και ιδιαίτερα η μεσσιανική και εσχατολογική της προσέγγιση. Μελετήσαμε την προφητεία κάτω από το πρίσμα της Καινής Διαθήκης, όπου η σαφής μεσσιανική της έννοια εφαρμόζεται ως εκπλήρωση στο πρόσωπο του Ιησού Χριστού. Στη συνέχεια αναζητήθηκε η θέση της ερμηνείας της προφητείας στην πατερική παράδοση και οι ιδιαίτερες αναφορές και οι χρήσεις της στο πλαίσιο του θεολογικού διαλόγου των πατέρων και εκκλησιαστικών συγγραφέων με τις αιρέσεις της εποχής τους. Τέλος, ολοκληρώνοντας τη μελέτη μας κάναμε μια αναφορά στην χρήση της προφητείας στη λειτουργική ζωή της ορθοδόξου Εκκλησίας μας.
description: The purpose of this study was to analyze, with objectivity and attention, prophet Isaiah’s ninth chapter on the Messianic prophecy. We researched the integrity of the prophecy’s text in chapter 9, and the comparison of MK with various ancient Greek translations supported in assorted critical editions. Subsequently with the contribution of Modern Greek but also foreign researchers and theologians we attempted an interpretative approach of the text. Even the prophecy’s position in Jewish literature was examined, and in particular the messianic and eschatological approach. We studied the prophecy under the light of the New Testament, where the clear messianic sense applied as fulfillment in Jesus Christ. In continuation the position of the prophecy’s interpretation was researched in the patristic tradition and its special references and uses in context of theological dialogue between fathers and ecclesiastical writers with the heresies of their time. Finally, in completing our study we made a reference to the use of the prophecy in the liturgical life of our orthodox church.
A lift of the Chern-Simons functional and its application to equivariant Floer homology
Creators: name: Anderson, Vaughn
Publisher: name: University of British Columbia
Year: 2009

description: We investigate the gauge theory of 3- and 4- manifolds. A lift of the Chern-Simons functional for fiat connections on a principal SU(2)-bundle over a homology 3-sphere Y is constructed, putting strong restrictions on the existence of low-dimensional instan ton moduli spaces over the cylinder R x Y. The value of this lift is computed for the Brieskorn spheres Σ(p, q, pqk — 1), and there is found to be one and only one flat con nection of Floer index 1 with positive Chern-Simons functional. This fact is applied to the computation of the equivariant Floer homology HFG,*(Σ(2, 3, 6k — 1)) showing that there are connections of index 1 and 5 with non-trivial boundary in the equivariant Floer homology. Specializing to the case k = 2, we obtain vanishing of HFG,₄*₊₁(Σ(2, 3, 11)).
Classification of integrable polynomial vector evolution equations
Creators: name: Sokolov, Vladimir V
name: Wolf, Thomas
Publisher: name: arXiv
Year: 2006
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Several classes of systems of evolution equations with one or two vector unknowns are considered. We investigate also systems with one vector and one scalar unknown. For these classes all equations having the simplest higher symmetry are listed.