cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Stellar Dynamics at the Galactic Center with an Extremely Large Telescope
Creators: name: Weinberg, Nevin N.
name: Milosavljevic, Milos
name: Ghez, Andrea M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss experiments achievable via monitoring of stellar dynamics near the massive black hole at the Galactic center with a next generation, extremely large telescope (ELT). Given the likely observational capabilities of an ELT and current knowledge of the stellar environment at the Galactic center, we synthesize plausible samples of stellar orbits around the black hole. We use the Markov Chain Monte Carlo method to evaluate the constraints that orbital monitoring places on the matter content near the black hole. Results are expressed as functions of the number N of stars with detectable orbital motions and the astrometric precision dtheta and spectroscopic precision dv at which stellar proper motions and radial velocities are monitored. For N = 100, dtheta = 0.5 mas, and dv = 10 km/s -- a conservative estimate of the capabilities of a 30 meter telescope -- the extended matter distribution enclosed by the orbits will produce measurable deviations from Keplerian motion if >1000 Msun is enclosed within 0.01 pc. The black hole mass and distance to the Galactic center will be measured to better than ~0.1%. Lowest-order relativistic effects, such as the prograde precession, will be detectable if dtheta < 0.5 mas. Higher-order effects, including frame dragging due to black hole spin, requires dtheta < 0.05 mas, or the favorable discovery of a compact, highly eccentric orbit. Finally, we calculate the rate at which monitored stars undergo detectable nearby encounters with background stars. Such encounters probe the mass function of stellar remnants that accumulate near the black hole. We find that ~30 encounters will be detected over a 10 yr baseline for dtheta = 0.5 mas.
description: 14 pages, 5 figures; discussion no longer aperture-specific (TMT -> ELT), matches ApJ version
Dispositional Optimism and Well-being in Cancer Patients: The Role of Cancer-Related Self-Efficacy
Creators: name: Akıncı, İrem
name: Akyüz-Yılmaz, Cansu
name: Bozo, Özlem
Publisher: name: Mediterranean Journal of Clinical Psychology
Year: 2021
Subjects: Optimism; Cancer-specific self-efficacy; Depressive symptoms; Quality of life.

description: Optimistic attitudes of cancer patients are shown as an important personal resource for the psychological and physical adjustment to the illness. Coping styles and appraisals were suggested as indirect pathways through which optimism associates with better functioning in patients. The current study aimed to investigate the role of cancer-specific self-efficacy domains (i.e., coping with cancer-related side effects and stress, maintaining activity and independence, seeking and understanding medical information, and affect regulation and seeking social support) in the association between optimism and physical and psychological (i.e., depressive symptoms) well-being of cancer patients. A cross-sectional study was conducted with 120 patients in Ankara, Turkey. Majority of the participants were female, and about half of them were breast cancer patients. Participants filled a set of self-report questionnaires including Life Orientation Test-Revised, Cancer Behavior Inventory, Multidimensional Quality of Life Scale-Cancer, and Beck Depression Inventory. The data were analyzed separately for physical well-being and depressive symptoms through the bootstrapping method. Of the four self-efficacy domains, maintaining activity and independence accounted for a significant proportion of variance in the optimism-physical well-being and optimism-depressive symptoms relations. Findings highlight the importance of patients' beliefs in their ability to sustain their daily activities for having better physical and psychological well-being during cancer treatment as well as the role of optimism in promoting this particular self-efficacy domain. Interventions are suggested to focus on enhancing cancer patients' self-efficacy in maintaining activity and independence.
description: Mediterranean Journal of Clinical Psychology, Vol 9, No 3 (2021)
Suđenje Haroldu Pinteru
Creators: name: Pavicevic, Jovana
Publisher: name: figshare
Year: 2020
Subjects: subject: 190404 Drama, Theatre and Performance Studies
subject: FOS: Arts (arts, history of arts, performing arts, music)

description: Rad se bavi tumačenjem multimedijalnog performansa Suđenje Haroldu Pinteru, izvedenog 2006. godine na JoakimInterFestu u saradnji kragujevačkog Teatra „Joakim Vujić“ i gostujuće pozorišne trupe Džon To iz Mančestera.
AutoPas in ls1 mardyn: Massively parallel particle simulations with node-level auto-tuning
Creators: name: Seckler, Steffen
name: Gratl, Fabio
name: Heinen, Matthias
name: Vrabec, Jadran
name: Bungartz, Hans-Joachim
name: Neumann, Philipp
Publisher: name: Technische Universität Berlin
Year: 2021
Subjects: subject: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
subject: AutoPas
subject: ls1 mardyn
subject: molecular dynamics
subject: particle simulations
subject: MPI
subject: auto-tuning

description: Due to computational cost, simulation software is confronted with the need to always use optimal building blocks — data structures, solver algorithms, parallelization schemes, and so forth — in terms of efficiency, while it typically needs to support a variety of hardware architectures. AutoPas implements the computationally most expensive molecular dynamics (MD) steps (e.g., force calculation) and chooses on-the-fly, i.e., at run time, the optimal combination of the previously mentioned building blocks. We detail decisions made in AutoPas to enable the interplay with MPI-parallel simulations and, to our knowledge, showcase the first MPI-parallel MD simulations that use dynamic tuning. We discuss the benefits of this approach for three simulation scenarios from process engineering, in which we obtain performance improvements of up to 50%, compared to the baseline performance of the highly optimized ls1 mardyn software.
how to make a zine when your life is falling apart
Creators: name: Ward-Davies, Anastaszia
Publisher: name: The University of Melbourne
Year: 2024
Subjects: classificationCode: 360299
subject: Creative and professional writing not elsewhere classified
classificationCode: 360602
subject: Fine arts
classificationCode: 390101
subject: Creative arts, media and communication curriculum and pedagogy

description: The first zine in this project was a series of hundred-word reflections (Lauren & Berlandt, 2019) [“four hundreds for me”] I wrote sitting under my desk at 7am in the middle of winter, underneath my a/r/tographic playmat. Somewhat compulsively, I wrote zine after zine as a sense-making exercise (Greene, 1987; Haynes, 2001), initially to examine my inability to participate in my own research. The turn occurs when I see these zines as a/r/tographic openings (Irwin, 2013) for and as research.These zines unfolded to story reasons why I could not participate in my own research, including being tired [“four hundreds for me”], being overwhelmed [“how to do dishes”], discomfort around being a working mother [“Re/searching, art/making, m/othering”] and the feeling of drowning [“What Are You Doing in Gloomy Hollow?”]. I explored my inability to participate in a living inquiry that felt haunted by postpartum psychosis and the unravelling of significant childhood trauma [“eeexxxccceessss” and “[sur]renderings: contiguity and living inquiry”]. I folded a longtime friend into the process [“how to make a zine when your life is falling apart”] and started to see the boundaries between my personal zine-making and the zines made as da/r/ta by participants shift; they started to overlap. I started to see their grief for their schools mirrored in my own grief for my research [“an ode to our goals for education (or something”] and my drowning in motherhood as contiguous with their drowning in schools [“neither of these wolves can do it”].This is an 8-page zine that tells a narrative of introducing a friend to my zine-making practice as a way to sense-make.
Electron Spin Relaxation under Drift in GaAs
Creators: name: Barry, E. A.
name: Kiselev, A. A.
name: Kim, K. W.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Based on a Monte Carlo method, we investigate the influence of transport conditions on the electron spin relaxation in GaAs. The decay of initial electron spin polarization is calculated as a function of distance under the presence of moderate drift fields and/or non-zero injection energies. For relatively low fields (a couple of kV/cm), a substantial amount of spin polarization is preserved for several microns at 300 K. However, it is also found that the spin relaxation rate increases rapidly with the drift field, scaling as the square of the electron wavevector in the direction of the field. When the electrons are injected with a high energy, a pronounced decrease is observed in the spin relaxation length due to an initial increase in the spin precession frequency. Hence, high-field or high-energy transport conditions may not be desirable for spin-based devices.
description: 4 pages, 3 figures, one table. Scheduled for publication in the May 26, 2003 issue of Applied Physics Letters (039321APL)
Towards Novel Insights in Lattice Field Theory with Explainable Machine Learning
Creators: name: Bluecher, Stefan
name: Kades, Lukas
name: Pawlowski, Jan M.
name: Strodthoff, Nils
name: Urban, Julian M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Machine Learning (cs.LG)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Machine learning has the potential to aid our understanding of phase structures in lattice quantum field theories through the statistical analysis of Monte Carlo samples. Available algorithms, in particular those based on deep learning, often demonstrate remarkable performance in the search for previously unidentified features, but tend to lack transparency if applied naively. To address these shortcomings, we propose representation learning in combination with interpretability methods as a framework for the identification of observables. More specifically, we investigate action parameter regression as a pretext task while using layer-wise relevance propagation (LRP) to identify the most important observables depending on the location in the phase diagram. The approach is put to work in the context of a scalar Yukawa model in (2+1)d. First, we investigate a multilayer perceptron to determine an importance hierarchy of several predefined, standard observables. The method is then applied directly to the raw field configurations using a convolutional network, demonstrating the ability to reconstruct all order parameters from the learned filter weights. Based on our results, we argue that due to its broad applicability, attribution methods such as LRP could prove a useful and versatile tool in our search for new physical insights. In the case of the Yukawa model, it facilitates the construction of an observable that characterises the symmetric phase.
description: 13 pages, 11 figures
Spacetime algebra and electron physics
Creators: name: Doran, C. J. L.
name: Lasenby, A. N.
name: Gull, S. F.
name: Somaroo, S.
name: Challinor, A. D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: This paper surveys the application of geometric algebra to the physics of electrons. It first appeared in 1996 and is reproduced here with only minor modifications. Subjects covered include non-relativistic and relativistic spinors, the Dirac equation, operators and monogenics, the Hydrogen atom, propagators and scattering theory, spin precession, tunnelling times, spin measurement, multiparticle quantum mechanics, relativistic multiparticle wave equations, and semiclassical mechanics.
description: 93 pages, 23 figures
Experimental study of two cascaded organic Rankine cycles with varying working fluids
Creators: name: Abbas, Wameedh Khider Abbas
name: Linnemann, Matthias
name: Baumhögger, Elmar
name: Vrabec, Jadran
Publisher: name: Technische Universität Berlin
Year: 2021
Subjects: subject: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
subject: organic Rankine cycle
subject: two-ORC system
subject: heat source temperature
subject: working fluids
subject: pinch point temperature difference

description: Organic Rankine cycles convert low-temperature heat from different sources, like solar, geothermal or biomass, into electricity and may thus help to meet the energy demand in an environmentally friendly way. While single ORC systems have been studied extensively, there are only very few experimental works on systems consisting of two cascaded organic Rankine cycles (two-ORC). In this work, an experimental study is carried out on the performance of a two-ORC system that consists of a high temperature (HT) cycle and a low temperature (LT) cycle. Each cycle is composed of the four significant components, i.e. expander, evaporator, condenser and pump, while the LT cycle is equipped with a throttle as expansion device. The HT cycle utilized heat from electrical heaters, while the LT cycle was driven by the waste heat from the HT cycle. The test rig utilizes Therminol 66 as a source that is heated up by electrical heaters with a power of 158 kW. Propane, butane, pentane and cyclopentane are chosen as working fluids for the present experiments. Parameter variations are carried out to study the thermodynamic characteristics of each cycle. The aim is to investigate the HT cycle performance considering turbine power output, thermal efficiency and exergy efficiency. The effect of the HT cycle on the LT cycle is examined by studying the heat transfer rate between the two cycles, characteristics of heat exchangers and pinch point temperature difference. A further goal is to explore the system performance under different conditions to maximize the exergetic utilization of the heat source. The results confirm that turbine power output and thermal efficiency increase with heat source temperature and turbine inlet pressure in the HT cycle. The maximum achieved thermal and exergy efficiencies are 5.5% and 20.2%, respectively, while the maximum turbine power output is 4.92 kW. Heat transfer measurements show that the maximum transferred heat flow from the HT cycle to the LT cycle is 23 kW when pentane is used as a working fluid. Temperature profiles and the pinch point temperature difference in the heat exchangers of both cycles are assessed under conditions where the highest turbine power is obtained. The experimental tests are promising and show that the two-ORC system is suitable to utilize heat sources in various temperature ranges.
Why is the Universe Accelerating?
Creators: name: Carroll, Sean M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The universe appears to be accelerating, but the reason why is a complete mystery. The simplest explanation, a small vacuum energy (cosmological constant), raises three difficult issues: why the vacuum energy is so small, why it is not quite zero, and why it is comparable to the matter density today. I discuss these mysteries, some of their possible resolutions, and some issues confronting future observations.
description: 22 pages; Contribution to Measuring and Modeling the Universe, Carnegie Observatories Astrophysics Series Vol. 2, ed. W. L. Freedman; references improved
Psychoneuroimmunology and Postpartum Depression
Creators: name: Balalau, Oana Denisa
name: Răduță, Cristina
name: Bacalbașa, Nicolae
name: Dumitriu, Anca Silvia
name: Paunica, Stana
name: Balalau, Cristian
Publisher: name: Mediterranean Journal of Clinical Psychology
Year: 2021
Subjects: Clinical Psychology; Gestational hypertension; Psychoneuroimmunology; Postpartum depression.

description: Depression is the most common mental illness at the community level. It is estimated that annually 3-15% of the general population has a depressive episode. An increasing number of cases are identified among pregnant patients. Thus, WHO has been recommending screening for pregnancy and pregnancy depression since 2015. The causes of depressive pathology are not fully known. The most commonly identified factors are related to biochemical disorders in the brain, psychological or social causes or the administration of drugs with the potential to induce depressive phenomena: antihypertensives, oral contraceptives, hormones, anti-inflammatory drugs. The association of hypertension with pregnancy can determine an increased risk of depression in pregnancy or childbirth. Hypertensive disorders in pregnancy cause an altered inflammatory response, with several studies identifying significant increased levels of IL-6, IL-8 and TNF-alpha in pregnant women with preeclampsia. Although hypertensive manifestations remit in approx. 6 weeks postpartum, studies have shown that the inflammatory syndrome persists for up to 3.5 months. Serum IL-6 levels are associated with preeclampsia severity and foetal status. Inflammatory, neuronal and hormonal changes are found in both pathologies, thus explaining the causal links between hypertensive disorders in pregnancy and postpartum depression. Current researchers have relied on the evaluation of a possible involvement of oxidative stress. Its association with depression is frequently identified, the severity of symptoms being directly proportional to the level of markers of oxidative stress.
description: Mediterranean Journal of Clinical Psychology, Vol 9, No 3 (2021)
Comparison of lightweight aggregate and foamed concrete with the same density level using image-based characterizations
Creators: name: Chung, Sang-Yeop
name: Elrahman, Mohamed Abd
name: Kim, Ji-Su
name: Han, Tong-Seok
name: Stephan, Dietmar
name: Sikora, Pawel
Publisher: name: Technische Universität Berlin
Year: 2019
Subjects: subject: 540 Chemie und zugeordnete Wissenschaften
subject: lightweight aggregate concrete
subject: foamed concrete
subject: X-ray
subject: SEM
subject: density
subject: compressive strength
subject: thermal conductivity

description: Lightweight concrete is a special type of concrete with low density and advanced insulation, mainly produced using lightweight aggregates or a cellular matrix. Concrete material made of lightweight aggregates is called lightweight aggregate concrete, while material made from a cellular matrix is generally called foamed concrete because of the pores introduced by a foaming agent. Both lightweight concrete types have different characteristics due to their different compositions. In this study, the material properties and characteristics of these lightweight concretes were investigated and compared. A series of foamed and lightweight aggregate concrete specimens with the same density level were produced, with their mechanical and thermal properties being evaluated using sensitive measurement tools. X-ray micro-computed tomography (-CT) and scanning electron microscopy (SEM) were used to characterize each material, using image-based techniques. The results brought to light the details of each lightweight concrete, at the microstructural level, in regard to their material properties and showed that the properly designed lightweight aggregate concrete can be more beneficial in mechanical performance by minimizing the loss of the insulation.
Clinical psychology: what type of science?
Creators: name: Frisone, Fabio
Publisher: name: Mediterranean Journal of Clinical Psychology
Year: 2021
Subjects: Clinical psychology; Science; Human science; Psychotherapy; Clinical research.

description: To identify the main task of clinical psychology, we cannot neglect that it studies the whole existence of the individual (Bosinelli, 1982; Cargnello, 1980; Codispoti, 2000; Minkowski, 2015). Starting from the term existence (from the Latin exsistĕre, whose prefix indicates a meaning related to going out, to coming forth; see Georges Calonghi, 1915), we understand that clinical psychology examines the open and unstable nature (Dazzi et al., 2006; Ehrenberg, 1999; Marzillier Hall, 1999; Nietzsche, 2011) of patients. This means that the space of psychological inquiry, which cannot be limited to the determinations of causal relationships – through which knowledge is typically acquired in the natural sciences – (Cartesio, 1999; Frisone et al., 2020) – requires a broader framework.
description: Mediterranean Journal of Clinical Psychology, Vol 9, No 3 (2021)
SYMOG: learning symmetric mixture of Gaussian modes for improved fixed-point quantization
Creators: name: Enderich, Lukas
name: Timm, Fabian
name: Burgard, Wolfram
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Deep neural networks (DNNs) have been proven to outperform classical methods on several machine learning benchmarks. However, they have high computational complexity and require powerful processing units. Especially when deployed on embedded systems, model size and inference time must be significantly reduced. We propose SYMOG (symmetric mixture of Gaussian modes), which significantly decreases the complexity of DNNs through low-bit fixed-point quantization. SYMOG is a novel soft quantization method such that the learning task and the quantization are solved simultaneously. During training the weight distribution changes from an unimodal Gaussian distribution to a symmetric mixture of Gaussians, where each mean value belongs to a particular fixed-point mode. We evaluate our approach with different architectures (LeNet5, VGG7, VGG11, DenseNet) on common benchmark data sets (MNIST, CIFAR-10, CIFAR-100) and we compare with state-of-the-art quantization approaches. We achieve excellent results and outperform 2-bit state-of-the-art performance with an error rate of only 5.71% on CIFAR-10 and 27.65% on CIFAR-100.
description: Preprint submitted to Neurocomputing
Dissecting the $ΔI= 1/2$ rule at large $N_c$
Creators: name: Donini, Andrea
name: Hernández, Pilar
name: Pena, Carlos
name: Romero-López, Fernando
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the scaling of kaon decay amplitudes with the number of colours, $N_c$, in a theory with four degenerate flavours, $N_f=4$. In this scenario, two current-current operators, $Q^\pm$, mediate $ΔS=1$ transitions, such as the two isospin amplitudes of non-leptonic kaon decays for $K\to (ππ)_{I=0,2}$, $A_0$ and $A_2$. In particular, we concentrate on the simpler $K\toπ$ amplitudes, $A^\pm$, mediated by these two operators. A diagrammatic analysis of the large-$N_c$ scaling of these observables is presented, which demonstrates the anticorrelation of the leading ${\mathcal O}(1/N_c)$ and ${\mathcal O}(N_f/N_c^2)$ corrections in both amplitudes. Using our new $N_f=4$ and previous quenched data, we confirm this expectation and show that these corrections are $naturally$ large and may be at the origin of the $ΔI=1/2$ rule. The evidence for the latter is indirect, based on the matching of the amplitudes to their prediction in Chiral Perturbation Theory, from which the LO low-energy couplings of the chiral weak Hamiltonian, $g^\pm$, can be determined. A NLO estimate of the $K \to (ππ)_{I=0,2}$ isospin amplitudes can then be derived, which is in good agreement with the experimental value.
description: 12 pages, 7 figures. Minor changes
Observational tests of the galaxy formation process
Creators: name: De Zotti, Gianfranco
name: Granato, Gian Luigi
name: Silva, Laura
name: Danese, Luigi
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The mutual feedback between star formation and nuclear activity in large spheroidal galaxies may be a key ingredient to overcome several difficulties plaguing current semi-analytic models for galaxy formation. We discuss some observational implications of the model by Granato et al. (2003) for the co-evolution of galaxies and active nuclei at their centers and stress the potential of the forthcoming surveys of the Sunyaev-Zeldovich effect on arcminute scales, down to $μ$K levels, to investigate the early galaxy formation phases, difficult to access by other means.
description: 6, pages, 1 figure, to appear in proc. of the meeting "Baryons on Cosmic Structures", Roma, October 20-21, 2003
title: Determinants of Recurrent Melioidosis
Creators: name: Limmathurotsakul, Direk
Publisher: name: The Open University
Year: 2008

description: Recurrent melioidosis represents relapse following failure to eradicate bacteria responsible for the primary infection or re-infection with a new strain. The first results chapter (chapter 3) evaluates the proportion of recurrent melioidosis due to relapse versus re-infection. Isolates from the same patient with an identical genotype were considered as relapse and those with a different genotype as re-infection. Three quarters of recurrent cases were due to relapse and one quarter were due to re-infection. There are two ways in which this approach could be confounded. First, ‘re-infection’ could actually represent relapse if primary infection was caused by simultaneous infection with multiple B. pseudomallei strains, followed by chance selection of different strains from the two episodes for genotyping. The chance of this mistake occurring is based on the rate of polyclonal B. pseudomallei infection. Chapter 4 describes the rate of polyclonal infection in a large group of unselected patients in northeast Thailand, which was very low (2/133 cases, 1.5%). Second, ‘relapse’ could actually represent reinfection in the event that re-infection was caused by a B. pseudomallei strain that was by chance identical to the primary strain. The probability of this happening is based on the degree of genetic diversity of B. pseudomallei in the environment. Chapter 5 demonstrates that the population of B. pseudomallei in even a small sampling site is extremely diverse. Thus, it is unlikely that the assessment of the causes of recurrent melioidosis contained significant errors due to polyclonal infection or low genetic diversity of the organism. Chapter 6 examines specific risk factors of relapse and reinfection. Duration and choices of antibiotics used for the primary episode were major determinants of relapse. Chapter 7 compares the clinical manifestations of relapse and re-infection and develops a simple scoring index to predict relapse or re-infection in patients presenting with recurrent melioidosis.
FPGA-based Neural Network Accelerator for Millimeter-Wave Radio-over-Fiber Systems
Creators: name: Lee, Jeonghun
name: He, Jiayuan
name: Wang, Ke
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: With the rapidly-developing high-speed wireless communications, the 60 GHz millimeter-wave frequency range and radio-over-fiber systems have been investigated as a promising solution to deliver mm-wave signals. Neural networks have been studied to improve the mm-wave RoF system performances at the receiver side by suppressing linear and nonlinear impairments. However, previous neural network studies in mm-wave RoF systems focus on the off-line implementation with high-end GPUs , which is not practical for low power-consumption, low-cost and limited computation platform applications. To solve this issue, we investigate neural network hardware accelerator implementations using the field programmable gate array (FPGA), taking advantage of the low power consumption, parallel computation capability, and reconfigurablity features of FPGA. Convolutional neural network (CNN) and binary convolutional neural network (BCNN) hardware accelerators are demonstrated. In addition, to satisfy the low-latency requirement in mm-wave RoF systems and to enable the use of low-cost compact FPGA devices, a novel inner parallel optimization method is proposed. Compared with the embedded processor (ARM Cortex A9) execution latency, the CNN/BCNN FPGA-based hardware accelerator reduces their latency by over 92%. Compared with non-optimized FPGA implementations, the proposed optimization method reduces the processing latency by over 44% for CNN and BCNN. Compared with the GPU implementation, the latency of CNN implementation with the proposed optimization method is reduced by 85.49%, while the power consumption is reduced by 86.91%. Although the latency of BCNN implementation with the proposed optimization method is larger compared with the GPU implementation, the power consumption is reduced by 86.14%. The FPGA-based neural network hardware accelerators provide a promising solution for mm-wave RoF systems.
description: 13 pages, 6 figures
Alexithymia in an unconventional sample of Forestry Officers: a clinical psychological study with surprising results
Creators: name: Gangemi, Sebastiano
name: Ricciardi, Luisa
name: Caputo, Andrea
name: Giorgianni, Concetto
name: Furci, Fabiana
name: Spatari, Giovanna
name: Martino, Gabriella
Publisher: name: Mediterranean Journal of Clinical Psychology
Year: 2021
Subjects: Alexithymia; Clinical Psychology; Workers; Psychosomatics; T.A.S.-20; Toronto Alexithymia Scale.

description: Background: Clinical psychological dynamics are known as effective in the onset of medical conditions. In this regard, alexithymia represents a well-recognized and studied phenomenon, whose study is attracting academic attention. Its relations with several conditions have found consistent resonance in the clinical fields, so that the application of clinical models to disregarded populations represents a relevant clinical opportunity. The current study was aimed at extending alexithymia study to a population consisting of State Forestry officers, including significant variables as age and years of tenure. Methods: The observation group consisted of 59 State Forestry officers, aged between 48 and 67 years old (SD=3.436). All subjects fully completed the protocol, consisting of the Toronto Alexithymia Scale (TAS-20) and a sociodemographic questionnaire. Descriptive statistics, correlational analyses, dependencies and statistical differences were performed in order to let significant relations emerge. Statistical analyses were performed using SPSS 24.0 for the Window package. Results: Descriptive statistics highlighted high scores related to all alexithymia factors (Difficulty Identifying Feelings, Difficulty Describing Feelings, Externally Oriented Thinking, TAS-20 Total score) in the considered individuals. Correlational analyses provided significant relations with reference to age, years of tenure and the whole set of alexithymic variables. Significant dependencies emerged among the selected predictors (age and years of tenure) and Tas-20 variables (including total score), as well as significant differences between two selected groups (38 and 38 years of tenure). Conclusion: Alexithymia emerged as particularly present in the considered population of State Forestry officers, demonstrating its sensibility with reference to age and years of tenure variables. The study of psychological phenomena affecting general subjects’ condition represent an extension of a present research field of high innovativeness, considering the lack of knowledge referred to the selected sample. Furter studies should increase the number of included individuals in order to favor the extension of the emerged results.
description: Mediterranean Journal of Clinical Psychology, Vol 9, No 3 (2021)
Telepsychology: Acceptability of online assessment and treatment in users and professional psychologists
Creators: name: Di Nuovo, Santo F.
name: Narzisi, Valeria
Publisher: name: Mediterranean Journal of Clinical Psychology
Year: 2021
Subjects: Telepsychology; Online assessment; Professional psychology; Acceptability of technologies.

description: Background: The article deals with issues related to telepsychology, i.e. assessment and treatment interventions using online tools. Historical stages of the assessment and treatment at distance are described, citing methods and instruments and the empirical evidence on their feasibility and validity. Methods: The study regarded the acceptance of remote intervention by two samples of professional clinical psychologists (n = 100) and potential users (n = 200). An online survey was used, including attitudes questionnaires, the UTAUT (Unified Theory of Acceptance and Use of Technology) model, a Semantic Differential, and the Big Five Inventory (only for users). Results: The professionals appear more convinced than users that the online assessment and therapy intervention is useful and can be spread more. With regard to tests, they suppose greater difficulties for the responders than the users themselves perceive. At the same time, the psychologists think that diagnostic tools should be adapted to be applied online, so specific training is needed to effectively use assessment and clinical support in telematic mode. Conclusions: The study confirms the trust of both psychologists and potential users towards online testing and interventions. Specific tools are needed to carry out the psychological intervention at distance, and specific training should be assured of psychologists who intend to use it.
description: Mediterranean Journal of Clinical Psychology, Vol 9, No 3 (2021)
Gender violence: the actions of the University of Messina
Creators: name: Settineri, Salvatore
name: Merlo, Emanuele Maria
Publisher: name: Mediterranean Journal of Clinical Psychology
Year: 2021
Subjects: Clinical Psychology; Gender Violence; Gender Policies; Third mission.

description: The main purposes of this public publishing service are centred on the dissemination of research, so that we all should remember that the three academic missions are inseparable.
description: Mediterranean Journal of Clinical Psychology, Vol 9, No 3 (2021)
Manganese Carbonate Precipitation Induced by Calcite-Forming Bacteria
Creators: name: Hatayama, Kouta
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 20199 Astronomical and Space Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Developmental Biology
subject: Cancer
subject: Inorganic Chemistry
subject: Computational Biology

description: Several dissimilatory metal-reducing bacteria and a halophilic bacterium are able to induce manganese carbonate (rhodochrosite) precipitation. In this study, it was revealed that Ensifer adhaerens JCM 21105T, Microbacterium testaceum JCM 1353T, Pseudomonas protegens DSM 19095T, and Rheinheimera texasensis DSM 17496T, which are calcite-forming bacteria, were able to aerobically induce the precipitation of manganese carbonate crystals on an agar medium. In the case of all four strains, the principal morphology of the precipitated manganese carbonate crystals was that of micro-sized spheres, when they were aerobically cultivated over the entire surface of the agar medium at 28 °C for 7 days.
Developing an Executable Paper with the Python in Heliophysics Community (PyHC)
Creators: name: Polson, Shawn
Publisher: name: Zenodo
Year: 2021
Subjects: Python
Python in Heliophysics Community
PyHC
Executable Paper
Magnetopause
Reproducibility
Poster
Python notebook

description: PyHC's iPoster presented at the 2021 AGU Fall Meeting. Abstract: The reproducibility crisis was sparked five years ago by a Nature survey that revealed most researchers have tried and failed to reproduce another scientist's experiments (Baker, 2016). Although the severity of the crisis is still being debated, it has spurred researchers to include reproducibility and open science practices in their work. To that end, the Python in Heliophysics Community (PyHC) encourages members of the heliophysics community to create “executable papers,” which are interactive pieces of software that combine text, data, and code to enable readers to reproduce every step taken to arrive at a publication’s conclusions. We describe the development of an executable paper—in this case, one centered around magnetopause boundary crossings in satellite data—our coordination efforts between scientists and software developers, and the current technology that makes this possible. We aim to promote this novel paper format and be an example to the heliophysics community of how scientists and software developers can work together to produce research that is transparent and reproducible.
Gravitational collapse of a Hagedorn fluid in Vaidya geometry
Creators: name: Harko, T.
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The gravitational collapse of a high-density null charged matter fluid, satisfying the Hagedorn equation of state, is considered in the framework of the Vaidya geometry. The general solution of the gravitational field equations can be obtained in an exact parametric form. The conditions for the formation of a naked singularity, as a result of the collapse of the compact object, are also investigated. For an appropriate choice of the arbitrary integration functions the null radial outgoing geodesic, originating from the shell focussing central singularity, admits one or more positive roots. Hence a collapsing Hagedorn fluid could end either as a black hole, or as a naked singularity. A possible astrophysical application of the model, to describe the energy source of gamma-ray bursts, is also considered.
description: 14 pages, 2 figures, to appear in Phys. Rev. D
Curve graphs for Artin-Tits groups of type $B$, $\widetilde A$ and $\widetilde C$ are hyperbolic
Creators: name: Calvez, Matthieu
name: de la Cruz, Bruno A. Cisneros
Publisher: name: arXiv
Year: 2020
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: The \emph{graph of irreducible parabolic subgroups} is a combinatorial object associated to an Artin-Tits group $A$ defined so as to coincide with the curve graph of the $(n+1)$-times punctured disk when $A$ is Artin's braid group on $(n+1)$ strands. In this case, it is a hyperbolic graph, by the celebrated Masur-Minsky's theorem. Hyperbolicity for more general Artin-Tits groups is an important open question. In this paper, we give a partial affirmative answer. For $n\geqslant 3$, we prove that the graph of irreducible parabolic subgroups associated to the Artin-Tits group of spherical type $B_n$ is also isomorphic to the curve graph of the $(n+1)$-times punctured disk, hence it is hyperbolic. For $n\geqslant 2$, we show that the graphs of irreducible parabolic subgroups associated to the Artin-Tits groups of euclidean type $\widetilde A_n$ and $\widetilde C_n$ are isomorphic to some subgraphs of the curve graph of the $(n+2)$-times punctured disk which are not quasi-isometrically embedded. We prove nonetheless that these graphs are hyperbolic.
Electronic States in Silicon Quantum Dots: Multivalley Artificial Atoms
Creators: name: Hada, Yoko
name: Eto, Mikio
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Electronic states in silicon quantum dots are examined theoretically, taking into account a multivalley structure of the conduction band. We find that (i) exchange interaction hardly works between electrons in different valleys. In consequence electrons occupy the lowest level in different valleys in the absence of Hund's coupling when the dot size is less than 10 nm. High-spin states are easily realized by applying a small magnetic field. (ii) When the dot size is much larger, the electron-electron interaction becomes relevant in determining the electronic states. Electrons are accommodated in a valley, making the highest spin, to gain the exchange energy. (iii) In the presence of intervalley scattering, degenerate levels in different valleys are split. This could result in low-spin states. These spin states in multivalley artificial atoms can be observed by looking at the magnetic-field dependence of peak positions in the Coulomb oscillation.
description: 18 pages, 5 figures
High Quality a-axis outgrowth on c-axis YlCa1-xBa2Cu3O7-d
Creators: name: Leibovitch, Guy
name: Beck, Roy
name: Deutscher, Guy
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The large amplitude of the high Tc (HTS) superconducting gap is attractive for improved electronic applications. However, the study of such HTS cuprates has uncovered that unlike the s-wave order parameter of the low Tc, an angle dependent dx2-y2 wave function is the dominant order parameter in such compounds. This symmetry causes low energy surface bound states, detrimental for applications, except at (100) oriented surfaces. It is therefore essential to have a smooth and well oriented surface of the crystallographic a-axis (100). In this work we present a study of an unconventional way to attain such surfaces in the form of a-axis outgrowth on a c-axis surface of sputtered Y1-xCaxBa2Cu3O7-d thin film. The grains topography was tested using X-ray, SEM and AFM together with Point Contact and Tunnel Junctions measurements.
description: 15 pages, 5 figures
Effects on the distortion of Inconel 718 components along a hybrid laser-based additive manufacturing process chain using laser powder bed fusion and laser metal deposition
Creators: name: Uhlmann, Eckart
name: Düchting, Jan
name: Petrat, Torsten
name: Krohmer, Erwin
name: Graf, Benjamin
name: Rethmeier, Michael
Publisher: name: Technische Universität Berlin
Year: 2021
Subjects: subject: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
subject: laser powder bed fusion
subject: directed energy deposition
subject: laser metal deposition
subject: distortion
subject: heat treatment

description: The combination of laser powder bed fusion (LPBF), known for its geometrical freedom and accuracy, and the nozzle-based laser metal deposition process (LMD), known for its high build-up rates, has great potential to reduce the additive manufacturing times for large metallic parts. For the industrial application of the LPBF-LMD hybrid process chain, it is necessary to investigate the influence of the LMD process on the LPBF substrate. In addition, the build plate material also has a significant impact on the occurrence of distortion along the additive manufacturing process chain. In the literature, steel build plates are often used in laser-based additive manufacturing processes of Inconel 718, since a good metallurgical bonding can be assured whilst reducing costs in the production and restoration of the build plates. This paper examines the distortion caused by LMD material deposition and the influence of the build plate material along the hybrid additive manufacturing process chain. Twin cantilevers are manufactured by LPBF and an additional layer is subsequently deposited with LMD. The distortion is measured in the as-built condition as well as after heat treatment. The effect of different LMD hatch strategies on the distortion is determined. The experiments are conducted using the nickel-base alloy Inconel 718. The results show a significant influence of LMD path strategies on distortion, with shorter tool paths leading to less distortion. The remaining distortion after heat treatment is considerably dependent on the material of the build plate.
QCD corrections to electroweak l nu_l jj and l^+ l^- jj production
Creators: name: Oleari, Carlo
name: Zeppenfeld, Dieter
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The production of W or Z bosons in association with two jets is an important background to the Higgs boson search in vector-boson fusion at the LHC. The purely electroweak component of this background is dominated by vector-boson fusion, which exhibits kinematic distributions very similar to the Higgs boson signal. We consider the next-to-leading order QCD corrections to the electroweak production of l nu_l jj and l^+ l^- jj events at the LHC, within typical vector-boson fusion cuts. We show that the QCD corrections are modest, increasing the total cross sections by about 10%. Remaining scale uncertainties are below 2%. A fully-flexible next-to-leading order partonic Monte Carlo program allows to demonstrate these features for cross sections within typical vector-boson-fusion acceptance cuts. Modest corrections are also found for distributions.
description: 26 pages, 10 figures. PRD final version. One reference corrected, introduction expanded
Analytical solution for the spectrum of two ultracold atoms in a completely anisotropic confinement
Creators: name: Chen, Yue
name: Xiao, Da-Wu
name: Zhang, Ren
name: Zhang, Peng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the system of two ultracold atoms in a three-dimensional (3D) or two-dimensional (2D) completely anisotropic harmonic trap. We derive the algebraic equation J_{3D}(E) = 1/a_{3D} (J_{2D}(E) = ln a_{2D}) for the eigen-energy E of this system in the 3D (2D) case, with a_{3D} and a_{2D} being the corresponding s-wave scattering lengths, and provide the analytical expressions of the functions J_{3D}(E) and J_{2D}(E). In previous researches this type of equation was obtained for spherically or axially symmetric harmonic traps (T. Busch, et. al., Found. Phys. 28, 549 (1998); Z. Idziaszek and T. Calarco, Phys. Rev. A 74, 022712 (2006)). However, for our cases with a completely anisotropic trap, only the equation for the ground-state energy of some cases has been derived (J. Liang and C. Zhang, Phys. Scr. 77, 025302 (2008)). Our results in this work are applicable for arbitrary eigen-energy of this system, and can be used for the studies of dynamics and thermal-dynamics of interacting ultracold atoms in this trap, e.g., the calculation of the 2nd virial coefficient or the evolution of two-body wave functions. In addition, our approach for the derivation of the above equations can also be used for other two-body problems of ultracold atoms.
description: 15 pages, 8 figures