cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Few-Shot Learning with Uncertainty-based Quadruplet Selection for Interference Classification in GNSS Data
Creators: name: Ott, Felix
name: Heublein, Lucas
name: Raichur, Nisha Lakshmana
name: Feigl, Tobias
name: Hansen, Jonathan
name: Rügamer, Alexander
name: Mutschler, Christopher
Publisher: name: arXiv
Year: 2024
Subjects: subject: Signal Processing (eess.SP)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences
subject: G.3; I.2.4; I.2.6
subject: 62P30, 68T30, 68T05, 68T37

description: Jamming devices pose a significant threat by disrupting signals from the global navigation satellite system (GNSS), compromising the robustness of accurate positioning. Detecting anomalies in frequency snapshots is crucial to counteract these interferences effectively. The ability to adapt to diverse, unseen interference characteristics is essential for ensuring the reliability of GNSS in real-world applications. In this paper, we propose a few-shot learning (FSL) approach to adapt to new interference classes. Our method employs quadruplet selection for the model to learn representations using various positive and negative interference classes. Furthermore, our quadruplet variant selects pairs based on the aleatoric and epistemic uncertainty to differentiate between similar classes. We recorded a dataset at a motorway with eight interference classes on which our FSL method with quadruplet loss outperforms other FSL techniques in jammer classification accuracy with 97.66%. Dataset available at: https://gitlab.cc-asp.fraunhofer.de/darcy_gnss/FIOT_highway
Loxocnemis dentator
Creators: name: Valcárcel, Javier Pérez
name: Piloña, Fernando Prieto
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Coreidae
Loxocnemis
Loxocnemis dentator

description: Loxocnemis dentator (Fabricius, 1794)
Citas bibliográficas:
Teruel: Teruel (Vázquez, 1985)
description: Published as part of Valcárcel, Javier Pérez & Piloña, Fernando Prieto, 2011, Contribuciones al catálogo de la familia Coreidae Leach, 1815 (Hemiptera) de Aragón (NE de la Península Ibérica)., pp. 9-20 in Arquivos Entomolóxicos 5 on page 11, DOI: 10.5281/zenodo.11372912
Assisting Blind People Using Object Detection with Vocal Feedback
Creators: name: Najm, Heba
name: Elferjani, Khirallah
name: Alariyibi, Alhaam
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: For visually impaired people, it is highly difficult to make independent movement and safely move in both indoors and outdoors environment. Furthermore, these physically and visually challenges prevent them from in day-today live activities. Similarly, they have problem perceiving objects of surrounding environment that may pose a risk to them. The proposed approach suggests detection of objects in real-time video by using a web camera, for the object identification, process. You Look Only Once (YOLO) model is utilized which is CNN-based real-time object detection technique. Additionally, The OpenCV libraries of Python is used to implement the software program as well as deep learning process is performed. Image recognition results are transferred to the visually impaired users in audible form by means of Google text-to-speech library and determine object location relative to its position in the screen. The obtaining result was evaluated by using the mean Average Precision (mAP), and it was found that the proposed approach achieves excellent results when it compared to previous approaches.
Stoichiometric Bi2Se3 Topological Insulator Ultra-Thin Films Obtained Through a New Fabrication Process for Optoelectronic Applications
Creators: name: Salvato, Matteo
name: Scagliotti, Mattia
name: De Crescenzi, Maurizio
name: Castrucci, Paola
name: De Matteis, Fabio
name: Crivellari, Michele
name: Cresi, Stefano Pelli
name: Catone, Daniele
name: Bauch, Thilo
name: Lombardi, Floriana
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A new fabrication process is developed for growing Bi2Se3 topological insulators in the form of nanowires/nanobelts and ultra-thin films. It consists of two consecutive procedures: first Bi2Se3 nanowires/nanobelts are deposited by standard catalyst free vapour-solid deposition on different substrates positioned inside a quartz tube. Then, the Bi2Se3, stuck on the inner surface of the quartz tube, is re-evaporated and deposited in the form of ultra-thin films on new substrates at temperature below 100 °C, which is of relevance for flexible electronic applications. The method is new, quick, very inexpensive, easy to control and allows obtaining films with different thickness down to one quintuple layer (QL) during the same procedure. The composition and the crystal structure of both the nanowires/nanobelts and the thin films is analysed by different optical, electronic and structural techniques. For the films, scanning tunnelling spectroscopy shows that the Fermi level is positioned in the middle of the energy bandgap as a consequence of the achieved correct stoichiometry. Ultra-thin films, with thickness in the range 1-10 QLs deposited on n-doped Si substrates, show good rectified properties suitable for their use as photodetectors in the ultra violet-visible-near infrared wavelength range
description: 11 pages, 8 figures, paper
Single mode two-channel cavity QED
Creators: name: Semião, F. L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this short communication, a new type of two-channel cavity QED model is derived. Two-channel models are important for they often lead to quantum interference phenomena. The previous models relied on the use of two or more modes of the quantized electromagnetic field, partially because of energy and parity restrictions. As it is shown in this work, such restrictions may be overcome with the use of properly chosen configurations of atomic levels and the aplication of classical external fields. Competing one- and two-photon processes involving one single mode may be obtained.
description: 4 pages, 1 figure, typos fixed
Demographic transition: its effects on women’s liberation in Taiwan
Creators: name: Ma, Serena Wai Lan
Publisher: name: University of British Columbia
Year: 2009

description: In this thesis, liberation for women will be defined within the boundaries of the demographic transition in Taiwan. Historically, the Taiwanese family was patriarchal, patrilineal and patrilocal, suggesting that women were inferior in status. Their responsibilities were limited to domestic duties and childcare. However, the onset of industrialization created the basis for fertility decline. It introduced incentives for regulating fertility and thus, changed the structure of the historical Chinese family as well as the status of women. In the Taiwanese case, industrialization established employment opportunities for young men and women, allowing them to delay marriage. Postponing marriage had important demographic effects because it meant that childbearing was delayed and consequently, fertility rates declined. The introduction of family planning also contributed to the decrease in fertility rates. Worried that overpopulation would impede industrialization, the state implemented family planning programs in Taiwan with a high degree of success. For women, having fewer children or spacing births, meant the freedom to pursue interests which otherwise, would be used for childcare. Therefore, fertility decline has a direct impact on women's autonomy. The extent that this applies to the Taiwanese case will be examined. The status of Taiwanese women is assessed using both quantitative and qualitative evidence. It involves comparing government implemented statistics and surveys on various areas of interest concerning men and women in Taiwan. Since data collected by the Taiwanese state is published on a regular basis, government census is used. However, this does not exclude other sources, such as data collected and surveys carried out by independent scholars. In addition to statistics, case studies are used as part of the research design. Findings reveal that women are able to pursue personal interests, such as acquiring higher levels of education,' concentrating on jobs and careers and enjoying different recreational activities. However, their freedom to realize individual potential and capabilities is challenged by those who deter women from recognizing their capacities. Women encounter anatagonism at the workplace, in law and politics. Although this is the case, they do not accept it as their fate. Organized collectively in women's associations, they contest restrictions placed on their freedom. In addition, feminist works which promote the changing status of women, highlight new ideas and address social issues, also confront women's plight. Thus, although women are not fully liberated, they gradually making progress to ensure that autonomy will be the final outcome.
Deep learning-enhanced paper-based vertical flow assay for high-sensitivity troponin detection using nanoparticle amplification
Creators: name: Han, Gyeo-Re
name: Goncharov, Artem
name: Eryilmaz, Merve
name: Joung, Hyou-Arm
name: Ghosh, Rajesh
name: Yim, Geon
name: Chang, Nicole
name: Kim, Minsoo
name: Ngo, Kevin
name: Veszpremi, Marcell
name: Liao, Kun
name: Garner, Omai B.
name: Di Carlo, Dino
name: Ozcan, Aydogan
Publisher: name: arXiv
Year: 2024
Subjects: subject: Medical Physics (physics.med-ph)
subject: Applied Physics (physics.app-ph)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Successful integration of point-of-care testing (POCT) into clinical settings requires improved assay sensitivity and precision to match laboratory standards. Here, we show how innovations in amplified biosensing, imaging, and data processing, coupled with deep learning, can help improve POCT. To demonstrate the performance of our approach, we present a rapid and cost-effective paper-based high-sensitivity vertical flow assay (hs-VFA) for quantitative measurement of cardiac troponin I (cTnI), a biomarker widely used for measuring acute cardiac damage and assessing cardiovascular risk. The hs-VFA includes a colorimetric paper-based sensor, a portable reader with time-lapse imaging, and computational algorithms for digital assay validation and outlier detection. Operating at the level of a rapid at-home test, the hs-VFA enabled the accurate quantification of cTnI using 50 uL of serum within 15 min per test and achieved a detection limit of 0.2 pg/mL, enabled by gold ion amplification chemistry and time-lapse imaging. It also achieved high precision with a coefficient of variation of < 7% and a very large dynamic range, covering cTnI concentrations over six orders of magnitude, up to 100 ng/mL, satisfying clinical requirements. In blinded testing, this computational hs-VFA platform accurately quantified cTnI levels in patient samples and showed a strong correlation with the ground truth values obtained by a benchtop clinical analyzer. This nanoparticle amplification-based computational hs-VFA platform can democratize access to high-sensitivity point-of-care diagnostics and provide a cost-effective alternative to laboratory-based biomarker testing.
description: 23 Pages, 4 Figures, 1 Table
Strobilotoma typhaecornis
Creators: name: Valcárcel, Javier Pérez
name: Piloña, Fernando Prieto
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Coreidae
Strobilotoma
Strobilotoma typhaecornis

description: Strobilotoma typhaecornis (Fabricius, 1803)
Citas bibliográficas:
Huesca: Jaca (Vázquez, 1985)
description: Published as part of Valcárcel, Javier Pérez & Piloña, Fernando Prieto, 2011, Contribuciones al catálogo de la familia Coreidae Leach, 1815 (Hemiptera) de Aragón (NE de la Península Ibérica)., pp. 9-20 in Arquivos Entomolóxicos 5 on page 11, DOI: 10.5281/zenodo.11372912
Leptoglossus occidentalis Heidemann 1910
Creators: name: Valcárcel, Javier Pérez
name: Piloña, Fernando Prieto
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Coreidae
Leptoglossus
Leptoglossus occidentalis

description: Leptoglossus occidentalis Heidemann, 1910
Citas bibliográficas:
Huesca: Garganta de Escuaín, Parque Nacional de Ordesa y Monte Perdido (Antor, 2010); El Pueyo de Morcat, Pantano de Vadiello, Puyarruego, Santorens, Sierra de Guara (Valcárcel & Prieto, 2010)
Zaragoza: Centro de Interpretación del Moncayo de Agramonte, Pietas (El Frasno) (Anónimo, 2009); Santuario de la Misericordia de Borja (Valcárcel & Prieto, 2010)
NOTA: Especie neártica de reciente introducción, considerada ya como aclimatada en Europa (Ribes et al., 2008). Su presencia en Aragón ha sido registrada por vez primera a través de una noticia publicada el 13 de noviembre de 2009 en el Heraldo de Aragón (Anónimo, 2009). La expansión creciente de esta especie hará sin duda que las citas en Aragón se incrementen de forma progresiva en un futuro próximo.
description: Published as part of Valcárcel, Javier Pérez & Piloña, Fernando Prieto, 2011, Contribuciones al catálogo de la familia Coreidae Leach, 1815 (Hemiptera) de Aragón (NE de la Península Ibérica)., pp. 9-20 in Arquivos Entomolóxicos 5 on page 12, DOI: 10.5281/zenodo.11372912
Higher twists in polarized DIS and the size of the constituent quark
Creators: name: Sidorov, A. V.
name: Weiss, C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The spontaneous breaking of chiral symmetry implies the presence of a short-distance scale in the QCD vacuum, which phenomenologically may be associated with the "size" of the constituent quark, rho ~ 0.3 fm. We discuss the role of this scale in the matrix elements of the twist-4 and 3 quark-gluon operators determining the leading power (1/Q^2-) corrections to the moments of the nucleon spin structure functions. We argue that the flavor-nonsinglet twist-4 matrix element, f_2^{u - d}, has a sizable negative value of the order rho^{-2}, due to the presence of sea quarks with virtualities ~ rho^{-2} in the proton wave function. The twist-3 matrix element, d_2, is not related to the scale rho^{-2}. Our arguments support the results of previous calculations of the matrix elements in the instanton vacuum model. We show that this qualitative picture is in agreement with the phenomenological higher-twist correction extracted from an NLO QCD fit to the world data on g_1^p and g_1^n, which include recent data from the Jefferson Lab Hall A and COMPASS experiments. We comment on the implications of the short-distance scale rho for quark-hadron duality and the x-dependence of higher-twist contributions.
description: 8 pages, 4 figures
Energy-momentum pseudotensor and superpotential for generally covariant theories of gravity of general form
Creators: name: Ilin, R. V.
name: Paston, S. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The current paper is devoted to the investigation of the general form of the energy-momentum pseudotensor (pEMT) and the corresponding superpotential for the wide class of theories. The only requirement for such a theory is the general covariance of the action without any restrictions on the order of derivatives of the independent variables in it or their transformation laws. As a result of the generalized Noether procedure, we obtain a recurrent chain of the equations, which allows one to express canonical pEMT as a divergence of the superpotential. The explicit expression for this superpotential is also given. We discuss the structure of the obtained expressions and the conditions for the derived pEMT conservation laws to be satisfied independently (fully or partially) of the equations of motion. Deformations of the superpotential form for theories with a change of the independent variables in the action are also considered. We apply these results to some interesting particular cases: General Relativity and its modifications, particularly mimetic gravity and Regge-Teitelboim embedding gravity.
description: LaTeX, 19 pages
Centrocoris spiniger
Creators: name: Valcárcel, Javier Pérez
name: Piloña, Fernando Prieto
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Coreidae
Centrocoris
Centrocoris spiniger

description: Centrocoris spiniger (Fabricius, 1781)
Citas bibliográficas:
Teruel: Albarracín (Champion, 1902); Teruel (Vázquez, 1985)
Zaragoza: Sobradiel (Torre Bueno, 1911); Aula Dei (Vázquez, 1985); Reserva de los Galachos del Ebro (Murria, 2001)
Material estudiado:
Zaragoza: Botorrita, 29-05-1988, 1♀; 1990, 1♀ (A. Melic leg., col. SEA)
description: Published as part of Valcárcel, Javier Pérez & Piloña, Fernando Prieto, 2011, Contribuciones al catálogo de la familia Coreidae Leach, 1815 (Hemiptera) de Aragón (NE de la Península Ibérica)., pp. 9-20 in Arquivos Entomolóxicos 5 on page 12, DOI: 10.5281/zenodo.11372912
First observations with CONDOR, a 1.5 THz heterodyne receiver
Creators: name: Wiedner, M. C.
name: Wieching, G.
name: Bielau, F.
name: Emprechtinger, M.
name: Rettenbacher, K.
name: Volgenau, N. H.
name: Graf, U. U.
name: Honingh, C. E.
name: Jacobs, K.
name: Vowinkel, B.
name: Menten, K. M.
name: M., K.
name: Nyman, L.
name: Güsten, R.
name: Philipp, S.
name: Rabanus, D.
name: Stutzki, J.
name: Wyrowski, F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The THz atmospheric windows centered at roughly 1.3 and 1.5~THz, contain numerous spectral lines of astronomical importance, including three high-J CO lines, the N+ line at 205 microns, and the ground transition of para-H2D+. The CO lines are tracers of hot (several 100K), dense gas; N+ is a cooling line of diffuse, ionized gas; the H2D+ line is a non-depleting tracer of cold (~20K), dense gas. As the THz lines benefit the study of diverse phenomena (from high-mass star-forming regions to the WIM to cold prestellar cores), we have built the CO N+ Deuterium Observations Receiver (CONDOR) to further explore the THz windows by ground-based observations. CONDOR was designed to be used at the Atacama Pathfinder EXperiment (APEX) and Stratospheric Observatory For Infrared Astronomy (SOFIA). CONDOR was installed at the APEX telescope and test observations were made to characterize the instrument. The combination of CONDOR on APEX successfully detected THz radiation from astronomical sources. CONDOR operated with typical Trec=1600K and spectral Allan variance times of 30s. CONDOR's first light observations of CO 13-12 emission from the hot core Orion FIR4 (= OMC1 South) revealed a narrow line with T(MB) = 210K and delta(V)=5.4km/s. A search for N+ emission from the ionization front of the Orion Bar resulted in a non-detection. The successful deployment of CONDOR at APEX demonstrates the potential for making observations at THz frequencies from ground-based facilities.
description: 4 pages + list of objects, 3 figures, to be published in A&A special APEX issue
RL-MPCA: A Reinforcement Learning Based Multi-Phase Computation Allocation Approach for Recommender Systems
Creators: name: Zhou, Jiahong
name: Mao, Shunhui
name: Yang, Guoliang
name: Tang, Bo
name: Xie, Qianlong
name: Lin, Lebin
name: Wang, Xingxing
name: Wang, Dong
Publisher: name: arXiv
Year: 2024
Subjects: subject: Information Retrieval (cs.IR)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Recommender systems aim to recommend the most suitable items to users from a large number of candidates. Their computation cost grows as the number of user requests and the complexity of services (or models) increases. Under the limitation of computation resources (CRs), how to make a trade-off between computation cost and business revenue becomes an essential question. The existing studies focus on dynamically allocating CRs in queue truncation scenarios (i.e., allocating the size of candidates), and formulate the CR allocation problem as an optimization problem with constraints. Some of them focus on single-phase CR allocation, and others focus on multi-phase CR allocation but introduce some assumptions about queue truncation scenarios. However, these assumptions do not hold in other scenarios, such as retrieval channel selection and prediction model selection. Moreover, existing studies ignore the state transition process of requests between different phases, limiting the effectiveness of their approaches.
 This paper proposes a Reinforcement Learning (RL) based Multi-Phase Computation Allocation approach (RL-MPCA), which aims to maximize the total business revenue under the limitation of CRs. RL-MPCA formulates the CR allocation problem as a Weakly Coupled MDP problem and solves it with an RL-based approach. Specifically, RL-MPCA designs a novel deep Q-network to adapt to various CR allocation scenarios, and calibrates the Q-value by introducing multiple adaptive Lagrange multipliers (adaptive-$λ$) to avoid violating the global CR constraints. Finally, experiments on the offline simulation environment and online real-world recommender system validate the effectiveness of our approach.
description: 11 pages, 7 figures, published to Proceedings of the ACM Web Conference 2023
Polarization-dependent resonant phenomena in all-dielectric scatterers: inversion of magnetic inductance and electric displacement
Creators: name: Shvartsburg, Aleksandr
name: Artekha, Sergey
Publisher: name: arXiv
Year: 2024
Subjects: subject: Applied Physics (physics.app-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Classical Physics (physics.class-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The theoretical description and experimental verification of resonant phenomena in electromagnetic fields generated in the near zone of all-dielectric rectangular thin sub wavelength frames, subjected to an incident microwave, is considered. The geometry of considered problems is presented by means of arrangements of these frames in three orthogonal planes, normal respectively to electric component, magnetic component and wave vector of the incident wave. Such trio paves the way to design of 3D all-dielectric multiresonant microwave unit cell. Displacement currents, generated by linearly polarized electromagnetic waves in the system, lead to the formation of magnetic and electric dipoles, each of which possess own resonant frequency. Resonant inversion of magnetic inductance and electric displacement is observed. The sliding incidence of plane wave on the frame is shown to provide the sharp and deep resonance in the components of generated field. The phase shift equal to $π$ between the magnetic components of incident and generated wave indicates the formation of negative magnetic response. There observes the angular anisotropy of arising dipoles, manifested in values of resonance frequencies and in the dependence of depths of resonant spectral dips upon the orientation of dipoles, with respect to the direction of propagation of incident wave.
description: 19 pages, 9 figures; typos corrected and some explanations added after feedback
Modified Gravity Model $f(Q,T)$ and Wormhole Solution
Creators: name: Sadatian, S. Davood
name: Hosseini, S. Mohamad Reza
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate wormhole solutions using the modified gravity model $f(Q,T)$ with viscosity and aim to find a solution for the existence of wormholes mathematically without violating the energy conditions. We show that there is no need to define a wormhole from exotic matter and analyze the equations with numerical analysis to establish weak energy conditions. In the numerical analysis, we found that the appropriate values of the parameters can maintain the weak energy conditions without the need for exotic matter. Adjusting the parameters of the model can increase or decrease the rate of positive energy density or radial and tangential pressures. According to the numerical analysis conducted in this paper, the weak energy conditions are established in the whole space if $α< 0$, $12.56 < β< 25.12$ or $α> 0$, $β> 25.12$. The analysis also showed that the supporting matter of the wormhole is near normal matter, indicating that the generalized $f(Q,T)$ model with viscosity has an acceptable parameter space to describe a wormhole without the need for exotic matter.
description: 14 pages, 8 figures, accepted for publication in Advances in High Energy Physics journal
Role of the presence of transition-metal atoms at the antisites in CrAs, CrSe and VAs zinc-blende compounds
Creators: name: Ozdogan, K.
name: Galanakis, I.
name: Aktas, B.
name: Sasioglu, E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In a recent publication [Galanakis I et al 2006 \PR B \textbf{74} 140408(R)] we have shown that in the case of CrAs and related transition-metal chalcogenides and pnictides, crystallizing in the zinc-blende structure, the excess of the transition-metal atoms leads to half-metallic ferrimagnetism. The latter property is crucial for spintronic applications with respect to ferromagnets due to the lower stray fields created by these materials. We extend this study to cover the case where the transition-metal atoms sitting at antisites are not identical to the ones in the perfect sites. In Cr-based compounds, the creation of Mn antisites keeps the half-metallic ferrimagnetic character produced also by the Cr antisites. In the case of VAs, Cr and Mn antisites keep the half-metallic character of VAs (contrary to V antisites) due to the larger exchange-splitting exhibited by these atoms.
Centrocoris variegatus Kolenati 1845
Creators: name: Valcárcel, Javier Pérez
name: Piloña, Fernando Prieto
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Coreidae
Centrocoris
Centrocoris variegatus

description: Centrocoris variegatus Kolenati, 1845
Citas bibliográficas:
Zaragoza: Sobradiel (Vázquez, 1985)
Material estudiado:
Zaragoza: Botorrita, 29-05-1988, 2♀♀; Pina de Ebro, 16-05-1994, 1♂; Valdefierro, 01- 11-1988, 1♂ (A. Melic leg., col. SEA)
description: Published as part of Valcárcel, Javier Pérez & Piloña, Fernando Prieto, 2011, Contribuciones al catálogo de la familia Coreidae Leach, 1815 (Hemiptera) de Aragón (NE de la Península Ibérica)., pp. 9-20 in Arquivos Entomolóxicos 5 on page 12, DOI: 10.5281/zenodo.11372912
Z_2 Graded Lie Algebra of Quaternions and Superconformal Algebra in D=4 dimensions
Creators: name: Chauhan, Bhupendra C. S.
name: Joshi, Pawan Kumar
name: Chanyal, B. C.
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: In the present discussion, we have studied the Z2-grading of quaternion algebra (H). We have made an attempt to extend the quaternion Lie algebra to the graded Lie algebra by using the matrix representations of quaternion units. The generalized Jacobi identities of Z2-graded algebra then result in symmetric graded partners (N1;N2;N3). The graded partner algebra (F) of quaternions (H) thus has been constructed from this complete set of graded partner units (N1;N2;N3), and N0 = C. Keeping in view the algebraic properties of the graded partner algebra (F), the Z2-graded superspace (Sl;m) of quaternion algebra (H) has been constructed. It has been shown that the antiunitary quaternionic supergroup UUa(l;m;H) describes the isometries of Z2-graded superspace (Sl;m). The Superconformal algebra in D = 4 dimensions is then established, where the bosonic sector of the Superconformal algebra has been constructed from the quaternion algebra (H) and the fermionic sector from the graded partner algebra (F).
description: 23 pages
Superorbital variability of X-ray and radio emission of Cyg X-1 - II. Dependence of the orbital modulation and spectral hardness on the superorbital phase
Creators: name: Poutanen, Juri
name: Zdziarski, Andrzej A.
name: Ibragimov, Askar
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discover a pronounced dependence of the strength of the X-ray orbital modulation and the hardness in Cyg X-1 in the hard state on its superorbital phase. Our results can be well modelled as a combination of two effects: the precession of the accretion disc (which causes the superorbital flux modulation) and the orbital-phase dependent X-ray absorption in an accretion bulge, located at the accretion disc edge close to the supergiant companion but displaced from the line connecting the stars by about 25^o. Our findings are supported by the distribution of the X-ray dips showing concentration towards zero superorbital phase, which corresponds to the bulge passing through the line of sight. We Fourier analyse our model, and find it explains the previous finding of asymmetric beat (between the orbital and superorbital modulations) frequencies in the observed power spectrum, provided the disc precession is prograde. We find no statistically significant changes of the orbital modulation with the superorbital phase in the 15-GHz radio data. This absence is consistent with the radio being emitted by a jet in the system, in which case the orbital modulation is caused by wind absorption far away from the disc. We also find that both the X-ray and radio fluxes of Cyg X-1 in the hard state on time scales >10^4-s have lognormal distributions, which complements a previous finding of a lognormal flux distribution in the hard state on 1-s time scales. We point out that the lognormal character of the flux distribution requires that flux logarithms rather than fluxes themselves should be used for averaging and error analysis. We also provide a correct formula for the uncertainty of rms of a light curve for the case when the uncertainty is higher than the measurement.
description: 12 pages, 9 figures, accepted for publication in MNRAS. Dependence of the spectral hardness on superorbital phase is added
Coreus marginatus subsp. marginatus
Creators: name: Valcárcel, Javier Pérez
name: Piloña, Fernando Prieto
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Coreidae
Coreus
Coreus marginatus
Coreus marginatus marginatus (linnaeus, 1758)

description: Coreus marginatus marginatus (Linnaeus, 1758)
Citas bibliográficas:
Huesca: Guara (Asso, 1784); Valle de Ordesa (Gulde, 1927); Albalate de Cinca, Bielsa, Circo de Soaso, Jaca, Monte Atares-Jaca, Sabiñánigo, Sierra Águila, Sierra de Guara, Valle de Benasque, Valle de Ordesa, Zuriza-Ansó (Vázquez, 1985)
Teruel: Bronchales, Sierra de Albarracín, Teruel (Vázquez, 1985)
Zaragoza: Cariñena (Bolívar & Chicote, 1879); Zaragoza (Ardid de Acha, 1903); Moncayo (Champion & Chapman, 1904; Torre Bueno, 1911); Aula Dei, Biel, Cariñena, Carretera Cuchillos-Tarazona, La Almunia, Tiermas (Vázquez, 1985)
Material estudiado:
Huesca: Cerler-Valle de Benasque, 26-05-2004, 1♂ (J.M. Diéguez leg., col. SEA) Zaragoza: Alcalá de Moncayo, 06-07-1998, 1♀ (JPV leg., col. SEA); Ateca, 20-07-1991, 1♀; Belchite, 05-05-1990, 1♀; Valdefierro, 01-11-1988, 1♂; 28-08-1995, 1♂ (A. Melic leg., col. SEA)
Enoplops scapha (Fabricius, 1794)
= Enoplops cornutus (Herrich-Schaeffer, 1835)
Citas bibliográficas:
Huesca: Valle de Ordesa (Gulde, 1927); Benasque, Panticosa, Peña Oroel-Jaca, Valle de Pineta (Vázquez, 1985)
Teruel: Albarracín, Bronchales, Frías-Albarracín, Royuela-Albarracín, Teruel (Vázquez, 1985)
Zaragoza: Cariñena (Bolívar & Chicote, 1879); Zaragoza (Ardid de Acha, 1903); Veruela (Torre Bueno, 1911); Soto de Montoya (Herrán, 1913); Aula Dei, Carretera Tudela-Tarazona, Moncayo (Vázquez, 1985); Retuerta de Pina (Ribes et al., 1997)
Material estudiado:
Teruel: Orihuela del Tremedal, 10-08-1998, 1♂ (A. Melic leg., col. SEA)
Zaragoza: Valdefierro, 28-08-1995, 2♀♀ (A. Melic leg., col. SEA)
description: Published as part of Valcárcel, Javier Pérez & Piloña, Fernando Prieto, 2011, Contribuciones al catálogo de la familia Coreidae Leach, 1815 (Hemiptera) de Aragón (NE de la Península Ibérica)., pp. 9-20 in Arquivos Entomolóxicos 5 on pages 12-13, DOI: 10.5281/zenodo.11372912
Relaxation of first-class constraints and the quantization of gauge theories: from "matter without matter" to the reappearance of time in quantum gravity
Creators: name: Casadio, Roberto
name: Chataignier, Leonardo
name: Kamenshchik, Alexander Yu.
name: Pedro, Francisco G.
name: Tronconi, Alessandro
name: Venturi, Giovanni
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We make a conceptual overview of a particular approach to the initial-value problem in canonical gauge theories. We stress how the first-class phase-space constraints may be relaxed if we interpret them as fixing the values of new degrees of freedom. This idea goes back to Fock and Stueckelberg, leading to restrictions of the gauge symmetry of a theory, and it corresponds, in certain cases, to promoting constants of Nature to physical fields. Recently, different versions of this formulation have gained considerable attention in the literature, with several independent iterations, particularly in classical and quantum descriptions of gravity, cosmology, and electromagnetism. In particular, in the case of canonical quantum gravity, the Fock--Stueckelberg approach is relevant to the so-called problem of time. Our overview recalls and generalizes the work of Fock and Stueckelberg and its physical interpretation with the aim of conceptually unifying the different iterations of the idea that appear in the literature and of motivating further research.
description: v2: conceptual clarifications and brief appendix added; improvements to the text; results unchanged; references updated
Syromastus rhombeus
Creators: name: Valcárcel, Javier Pérez
name: Piloña, Fernando Prieto
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Coreidae
Syromastus
Syromastus rhombeus

description: Syromastus rhombeus (Linnaeus, 1767)
Citas bibliográficas:
Huesca: Albalate de Cinca, Jaca (Vázquez, 1985)
Teruel: Teruel (Vázquez, 1985)
Zaragoza: Zaragoza (Ardid de Acha, 1903); Moncayo (Torre Bueno, 1911); Calatayud (Vázquez, 1985)
Material estudiado:
Zaragoza: Botorrita, 24-05-1987, 1♀; 10-07-1988, 1♀ (A. Melic leg., col. SEA)
description: Published as part of Valcárcel, Javier Pérez & Piloña, Fernando Prieto, 2011, Contribuciones al catálogo de la familia Coreidae Leach, 1815 (Hemiptera) de Aragón (NE de la Península Ibérica)., pp. 9-20 in Arquivos Entomolóxicos 5 on page 13, DOI: 10.5281/zenodo.11372912
Point spread function engineering for spiral phase interferometric scattering microscopy enables robust 3D single-particle tracking
Creators: name: Brooks, Nathan J.
name: Liu, Chih-Chen
name: Hsieh, Chia-Lung
Publisher: name: arXiv
Year: 2024
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Interferometric scattering (iSCAT) microscopy is currently among the most powerful techniques available for achieving high-sensitivity single-particle localization. This capability is realized through homodyne detection, where interference with a reference wave offers the promise of exceptionally precise three-dimensional (3D) localization. However, the practical application of iSCAT to 3D tracking has to date been hampered by rapid oscillations in the signal-to-noise ratio (SNR) as particles move along the axial direction. In this study, we introduce a novel strategy based on back pupil plane engineering, wherein we use a spiral phase mask to re-distribute the phase of the scattered field of the particle uniformly across phase space, thus ensuring consistent SNR as the particle moves throughout the focal volume. Our findings demonstrate that this modified spiral phase iSCAT exhibits greatly enhanced localizability characteristics. We substantiate our theoretical results with numerical and experimental demonstrations, showcasing the practical application of this approach for high-precision, ultrahigh-speed (20,000 frames per second) 3D tracking, and characterization of freely diffusing nanoparticles.
description: 21 pages, 5 figures
Gonocerus acuteangulatus
Creators: name: Valcárcel, Javier Pérez
name: Piloña, Fernando Prieto
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Coreidae
Gonocerus
Gonocerus acuteangulatus

description: Gonocerus acuteangulatus (Goeze, 1778)
= Gonocerus venator (Fabricius, 1794)
Citas bibliográficas:
Huesca: Guara (Torre Bueno, 1911); Valle de Ordesa (Gulde, 1927); Puerto de Aísa (Gessé et al., 1995); Embún, Oroel, Panticosa, San Juan de la Peña, Selva de Oza, Sierra de Guara, Torreciudad, Valle de Ansó, Valle de Ordesa (Vázquez, 1985)
Teruel: Teruel (Vázquez, 1985)
Zaragoza: Ambel (Dusmet, 1897); Aula Dei, Tiermas (Vázquez, 1985); Retuerta de Pina (Ribes et al., 1997)
Material estudiado:
Huesca: San Juan de la Peña, 03-08-1993, 1♀ (A. Melic leg., col. SEA)
description: Published as part of Valcárcel, Javier Pérez & Piloña, Fernando Prieto, 2011, Contribuciones al catálogo de la familia Coreidae Leach, 1815 (Hemiptera) de Aragón (NE de la Península Ibérica)., pp. 9-20 in Arquivos Entomolóxicos 5 on pages 13-14, DOI: 10.5281/zenodo.11372912
Finite Volume Dependence of the Quark-Antiquark Vacuum Expectation Value
Creators: name: Bijnens, Johan
name: Ghorbani, Karim
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: A general formula is derived for the finite volume dependence of vacuum expectation values analogous to Luscher's formula for the masses. The result involves no integrals over kinematic quantities and depends only on the matrix element between pions at zero momentum transfer thus presenting a new way to calculate the latter, i.e. pion sigma terms. The full order $p^6$ correction to the vacuum condensate $$ is evaluated and compared with the result from the Luscher formula. Due to the size of the $p^6$ result no conclusion about the accuracy of the Luscher formula can be drawn.
description: 9 pages, conclusions described in much more detail
Gonocerus insidiator
Creators: name: Valcárcel, Javier Pérez
name: Piloña, Fernando Prieto
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Coreidae
Gonocerus
Gonocerus insidiator

description: Gonocerus insidiator (Fabricius, 1787)
Citas bibliográficas:
Zaragoza: Zaragoza (Ardid de Acha, 1903)
Gonocerus juniperi (Herrich-Schaeffer, 1839)
= Gonocerus juniperi (Herrich-Schaeffer, 1839) var. triqueticornis Rambur, 1842
Citas bibliográficas:
Huesca: Torreciudad (Vázquez, 1985)
Teruel: Albarracín (Vázquez, 1985)
Zaragoza: Retuerta de Pina (Ribes et al., 1997); Los Monegros (VV. AA., 1999; Pedrocchi, 2000)
Material estudiado:
Zaragoza: Botorrita, 04-09-1993, 1♀ (A. Melic leg., col. JPV)
description: Published as part of Valcárcel, Javier Pérez & Piloña, Fernando Prieto, 2011, Contribuciones al catálogo de la familia Coreidae Leach, 1815 (Hemiptera) de Aragón (NE de la Península Ibérica)., pp. 9-20 in Arquivos Entomolóxicos 5 on page 14, DOI: 10.5281/zenodo.11372912
ELT Imaging of MWC 297 from the 23-m LBTI: Complex Disk Structure and a Companion Candidate
Creators: name: Sallum, Steph
name: Eisner, Josh
name: Stone, Jordan
name: Dietrich, Jeremy
name: Hinz, Phil
name: Spalding, Eckhart
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Herbig Ae/Be stars represent the early outcomes of star formation and the initial stages of planet formation at intermediate stellar masses. Understanding both of these processes requires detailed characterization of their disk structures and companion frequencies. We present new 3.7 micron imaging of the Herbig Be star MWC 297 from non-redundant masking observations on the phase-controlled, 23-m Large Binocular Telescope Interferometer. The images reveal complex disk structure on the scales of several au, as well as a companion candidate. We discuss physical interpretations for these features, and demonstrate that the imaging results are independent of choices such as priors, regularization hyperparameters, and error bar estimates. With an angular resolution of ~17 mas, these data provide the first robust ELT-resolution view of a distant young star.
description: accepted for publication in AJ; 27 pages; 19 figures
New exact solution and $\mathcal{O}\,(1/\sqrtω)$ anomaly in Brans-Dicke gravity with trace-carrying matter
Creators: name: Nguyen, Hoang Ky
name: Chauvineau, Bertrand
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We present an exact static spherisymmetric solution for the Brans-Dicke action sourced by a self-gravitating massless Klein-Gordon helicity-0 field. In contrast to the Maxwell electromagnetic field, a Klein-Gordon field possesses an energy-momentum tensor with $\textit{non-vanishing trace}$. Upon a Weyl mapping into the Einstein frame, the transformed Brans-Dicke scalar field takes on the role of a "dilaton" coupled with the Klein-Gordon field. Despite this dilatonic coupling, the field equations of the resulting Einstein-Klein-Gordon-dilaton action are fully soluble when employing the harmonic radial coordinate. The exact solution derived herein can serve as a prototype for future Brans-Dicke gravity studies involving trace-carrying matter fields. Notably, in the limit of infinite $ω$, the Brans-Dicke scalar field exhibits an anomalous behavior of ${\cal O}\,(1/\sqrtω)$ as opposed to ${\cal O}\,(1/ω)$. As a consequence, the solution converges to a spacetime configuration of General Relativity sourced by the original Klein-Gordon field and a free scalar field, the latter of which is the ${\cal O}\,(1/\sqrtω)$ "remnant" of the Brans-Dicke scalar field. Furthermore, we provide a formal mathematical proof substantiating these two conclusions. Although the ${\cal O}\,(1/\sqrtω)$ anomaly has been previously discovered for Brans-Dicke vacuum and Brans-Dicke-Maxwell electrovacuum, our findings establish its prevalence in Brans-Dicke gravity $\textit{regardless}$ of the trace of the energy-momentum tensor of the source. Taken together, the ${\cal O}\,(1/\sqrtω)$ anomaly challenges the conventional belief in the ${\cal O}\,(1/ω)$ signature commonly associated with Brans-Dicke gravity. In particular, it may have implications in improving the relativistic corrections to Newtonian gravity beyond the weak-field parametrized post-Newtonian formalism.
description: Final published version
Perceptions of first line nurse managers : managing within a climate of fiscal restraint
Creators: name: O’Quinn, Mary Claire
Publisher: name: University of British Columbia
Year: 2009

description: The purpose of this study was to examine the perceptions of first line nurse managers of managing within a climate of fiscal restraint. The literature indicates that the first line nurse manager's role continues to evolve; it is increasing in accountability and responsibility, particularly in the area of financial responsibility. As well, first line nurse managers strongly influence the quality of care that is delivered in Canadian hospitals. They have the responsibility of ensuring that patients receive high quality care delivered in a cost effective manner. This study is part of a larger study by Acorn and Crawford (1995) in which data were collected through a survey completed by 200 first line nurse managers in 38 acute care hospitals in British Columbia. In this study, a descriptive exploratory design was used to examine the perceptions of nurse managers. Focus groups were conducted to validate the data collected by the open-ended questions in the Acorn and Crawford study, as well as to further explore the perceptions of first line nurse managers of managing within a climate of fiscal restraint. These data were then analyzed using content analysis. Data were first coded, then organized under categories from which themes emerged. The major themes that emerged from the data were; enormity of change, impact of change, and the management of change. The enormity of change resulted from health care reform, decentralization of decision making, increase in accountability and responsibility of first line nurse managers, and changes to the delivery of patient care. The impact of change increased the workload of first line nurse managers, contributed to less effective communication in the facilities and resulted in uncertainty about their future role in health care. First line nurse managers used several strategies to control costs and obtain technological and administrative support. In summary, the health care industry in Canada is rapidly changing and increasing in complexity, creating major challenges for first line nurse managers in meeting the standards for quality patient care. The implications of the findings for administrative nursing practice, nursing education, nursing research, and hospital administrators are presented.
Uncertainty Quantification in Atomistic Simulations of Silicon using Interatomic Potentials
Creators: name: Best, I. R.
name: Sullivan, T. J.
name: Kermode, J. R.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Atomistic simulations often rely on interatomic potentials to access greater time- and length- scales than those accessible to first principles methods such as density functional theory (DFT). However, since a parameterised potential typically cannot reproduce the true potential energy surface of a given system, we should expect a decrease in accuracy and increase in error in quantities of interest calculated from simulations. Quantifying the uncertainty on the outputs of atomistic simulations is thus an important, necessary step so that there is confidence in results and available metrics to explore improvements in said simulations. Here, we address this research question by forming ensembles of Atomic Cluster Expansion (ACE) potentials, and using Conformal Prediction with DFT training data to provide meaningful, calibrated error bars on several quantities of interest for silicon: the bulk modulus, elastic constants, relaxed vacancy formation energy, and the vacancy migration barrier. We evaluate the effects on uncertainty bounds using a range of different potentials and training sets.
description: 15 pages, 8 figures