cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Improved Parameter Targeting in 3D-Integrated Superconducting Circuits through a Polymer Spacer Process
Creators: name: Norris, Graham J.
name: Michaud, Laurent
name: Pahl, David
name: Kerschbaum, Michael
name: Eichler, Christopher
name: Besse, Jean-Claude
name: Wallraff, Andreas
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Three-dimensional device integration facilitates the construction of superconducting quantum information processors with more than several tens of qubits by distributing elements such as control wires, qubits, and resonators between multiple layers. The frequencies of resonators and qubits in flip-chip-bonded multi-chip modules depend on the details of their electromagnetic environment defined by the conductors and dielectrics in their vicinity. Accurate frequency targeting therefore requires precise control of the separation between chips and minimization of their relative tilt. Here, we describe a method to control the inter-chip separation by using polymer spacers. Compared to an identical process without spacers, we reduce the measured planarity error by a factor of 3.5, to a mean tilt of 76(35) $μ$rad, and the deviation from the target inter-chip separation by a factor of ten, to a mean of 0.4(8) $μ$m. We apply this process to coplanar waveguide resonator samples and observe chip-to-chip resonator frequency variations below 50 MHz ($\approx$ 1 %). We measure internal quality factors of $5 \times 10^5$ at the single-photon level, suggesting that the added spacers are compatible with low-loss device fabrication.
description: 7 pages + 7 pages appendices
A tanúsító védjegyes a minőség
Creators: name: Kovács, Barna
name: Kovács, Barna
Publisher: name: Unknown
Year: 2003
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Marketing
subject: FOS: Economics and business

description: Magyarország a csatlakozás adta lehetőségek kihasználásával jelentős agrárpiaci pozícióra tehet szert az Uniós piacon, de az előnyök kihasználása elsősorban a helyes irányválasztástól függ. A tagországok eltérő joggyakorlata néhány olyan közös vonást tartalmaz, amelyek egyértelmű jelzéseket adnak a csatlakozni kívánó országoknak. Természetesen ezek az országok minden szempontból jelentős hátrányban vannak a jelenlegi tagországokkal szemben, ezért a csatlakozásnak lesznek nagyon „fájdalmas" következményei is. A közösségi marketing eszközeinek használata a közös piacon megengedett, ám annak bizonyos formái korlátozottak. A tanúsító védjegy esetében olyan feltételeknek kell teljesülniük, amelyek a marketing stratégia újragondolását igényelik. A származás igazolására és jelzésére választhatunk olyan eszközöket, amelyeknek használata megengedett, sőt az utóbbi években kimondottan támogatott. Ilyenek a 2081/92 és 2082/92 EK Rendeletek az eredet és származás igazolására. -------------- Hungary may obtain a considerable position on the agricultural market of the European Union if she exploits its chances deriving from the accession. However, the trends of agri culture must be properly chosen in order to exploit these chances. Although the legal practices are different in the EU member states, they have also some common traits, which may serve as unambiguous indicators for the countries wanting to enter into the Union. Needless to say, these countries have considerable disadvantages as compared with those which are already members of the Union, wherefore their access will also have some very “painful” consequences. It is allowed to use the common marketing tools on the common market, but some forms of them are limited. In case of the certifying trademark some conditions must be fulfilled which require the reconsideration of marketing strategies. Along with the certifying trademark, however, other ways of certifying and indicating the origin can be chosen as well. These are tools the use of which is not only permitted but has been even explicitly supported in recent years. One of them is the EU Directive No. 2081/92 on the certification of origin.
All-optical switching due to state-filling in quantum dots
Creators: name: Prasanth, R.
name: Haverkort, J. E. M.
name: Deepthy, A.
name: Bogaart, E. W.
name: van der Tol, J. J. G. M.
name: Patent, E. A.
name: Zhao, G.
name: Gong, Q.
name: van Veldhoven, P. J.
name: Noetzel, R.
name: Wolter, J. H.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report all-optical switching due to state-filling in quantum dots (QDs) within a Mach-Zehnder Interferometric (MZI) switch. The MZI was fabricated using InGaAsP/InP waveguides containing a single layer of InAs/InP QDs. A 1530-1570 nm probe beam is switched by optical excitation of one MZI-arm from the top. By exciting below the InGaAsP bandgap, we prove that the refractive index nonlinearity is only due to the QDs. The switching efficiency is 2 rad/(microW absorbed power). Probe wavelength insensitivity was obtained using a broad distribution of QDs.
description: 12 pages
title: Rhetoric And Reality Of Inclusion: An Examination Of Policy And Practice In Southampton Local Education Authority
Creators: name: Ramjhun, Ahmad Faoud
Publisher: name: The Open University
Year: 2002

description: This research is about the policy and practice of inclusion in Southampton. Although inclusion is a process of increasing the participation of all children in learning, the focus is on those who are experiencing difficulties in, and are at risk of being excluded from, learning. A mixture of quantitative and qualitative methodology is used to provide a rich picture of the LEA'S context. The quantitative data illustrate the nature of the task if Southampton is to promote inclusion. The qualitative data provide the perspectives of key stakeholders who are either providers or recipients of education. Grounded theory methodology is used to identify themes and findings are tested against a theory based on Dyson's (1999) model of discourses on inclusion. Southampton has taken steps to promote inclusion though there are variations in school practice. Nearly 99% of children are attending mainstream schools and there is evidence that they are consistently making progress in learning. However, increasing accountabilities and expectations based on pre-determined academic measures, risk making some of them more welcome and worthy than others. Some are at risk of being overlooked whilst others are excluded from the learning process. Whilst acknowledging successful practices in Southampton, the research identifies a number of key issues. These range from addressing inequalities and removing barriers and prejudices to providing the infrastructures, resources and training in schools so that all children are able to maximise their participation in learning. Key themes emerging from the research illustrate the growing influence of competition and market forces, the pressures in schools, the issue of human rights and the politics of practice. It is argued that LEAS have a role in changing attitudes and cultures in order to promote an acceptance of diversity and difference and the removal of perceived oppression and injustice. Inclusion will require such changes supported with insightful management. Southampton LEA offers a mixed picture in relation to the rhetoric and reality of inclusion. There seems to be commitment to its rationale though its realisation or implementation is considered to be problematic.
Additional file 2 of 3D ultrasound guidance for radiofrequency ablation in an anthropomorphic thyroid nodule phantom
Creators: name: Boers, Tim
name: Braak, Sicco J.
name: Brink, Wyger M.
name: Versluis, Michel
name: Manohar, Srirang
Publisher: name: figshare
Year: 2024
Subjects: subject: Space Science
subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology

description: Additional file 1: Supplementary Video 1. A matrix transducer recording of an RF-electrode placement from the isthmus into the phantom nodule, showing two real-time scanning planes at the same time. The transversal scanning plane (left) is parallel to the RF-electrode and shows the in-plane insertion (as well as the trachea on the left and the carotid artery on the right), the sagittal plane (right) is orthogonal to the RF-electrode and shows the out-of-plane insertion
Calculation of asymptotic charges at the critical sets of null infinity
Creators: name: Mohamed, Mariem Magdy Ali
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The asymptotic structure of null and spatial infinities of asymptotically flat spacetimes plays an essential role in discussing gravitational radiation, gravitational memory effect, and conserved quantities in General Relativity. Bondi, Metzner and Sachs established that the asymptotic symmetry group for asymptotically simple spacetimes is the infinite-dimensional BMS group. Given that null infinity is divided into two sets: past null infinity $\mathscr{I}^{-}$ and future null infinity $\mathscr{I}^{+}$, one can identify two independent symmetry groups: $\text{BMS}^{-}$ at $\mathscr{I}^{-}$ and $\text{BMS}^{+}$ at $\mathscr{I}^{+}$. Associated with these symmetries are the so-called BMS charges. A recent conjecture by Strominger suggests that the generators of $\text{BMS}^{-}$ and $\text{BMS}^{+}$ and their associated charges are related via an antipodal reflection map near spatial infinity. To verify this matching, an analysis of the gravitational field near spatial infinity is required. This task is complicated due to the singular nature of spatial infinity for spacetimes with non-vanishing ADM mass. Different frameworks have been introduced in the literature to address this singularity, e.g., Friedrich's cylinder, Ashtekar-Hansen's hyperboloid and Ashtekar-Romano's asymptote at spatial infinity. This paper reviews the role of Friedrich's formulation of spatial infinity in the investigation of the matching of the spin-2 charges on Minkowski spacetime and in the full GR setting.
description: 16 pages, 2 Figures (A major change in the structure and content compared to earlier version. The changes are made to agree with the peer reviewed version.)
Holomorphic discs with dense images
Creators: name: Forstneric, Franc
name: Winkelmann, Joerg
Publisher: name: arXiv
Year: 2004
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 32E30, 32H02

description: We prove that for any complex manifold X, the set of all holomorphic maps from the unit disc to X whose images are everywhere dense in X forms a dense subset in the space of all holomorphic maps from the disc to X. We show by an example that this need not hold for maps from the disc to complex spaces with singularities.
Solving the inhomogeneous Bethe-Salpeter equation
Creators: name: Semikh, S. S.
name: Dorkin, S. M.
name: Beyer, M.
name: Kaptari, L. P.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We develop an advanced method of solving homogeneous and inhomogeneous Bethe-Salpeter equations by using the expansion over the complete set of 4-dimensional spherical harmonics. We solve Bethe-Salpeter equations for bound and scattering states of scalar and spinor particles for the case of one meson exchange kernels. Phase shifts calculated for the scalar model are in agreement with the previously published results. We discuss possible manifestations of separability for one meson exchange interaction kernels.
description: 9 pages, 11 eps-figures. Talk presented by S. S. Semikh at XVII International Baldin Seminar on High Energy Physics Problems "Relativistic Nuclear Physics and Quantum Chromodynamics", September 27 - October 2, 2004, Dubna, Russia; to appear in the proceedings of this conference
Definition of a distributed machine health monitoring system : application to the design of a hydraulic marine steer-by-wire system
Creators: name: Cullingham, Nicholas Eoghan
Publisher: name: University of British Columbia
Year: 2010

description: The objective of this thesis is to define a general tool set for monitoring the health of the physical part of a system that is operated by an embedded computer system. Embedded computer systems are commonly found in industrial, military, transportation and consumer products. Health monitoring is usually required to track the health of actuators, sensors, communication, and computational resources. The novel tool set presented in this thesis provides three measures of component health, all of which indicate errors based on the performance of a system state relative to a base model. A set of software classes is defined, which interacts with an object-oriented model of the physical system that supports distributed processing, fault tolerance and redundancy management. The model based health monitor also integrates into the redundancy management. When a redundant physical sensor fails, the health monitor provides analytical redundancy for that system state, by predicting it and generating adaptive thresholds on the accuracy of the analytical sensor. The health monitoring system has been implemented on an experimental apparatus built to approximate the functionality of a hydraulic, steer-by-wire system for marine applications.
Some Calculations for Cold Fusion Superheavy Elements
Creators: name: Zhong, X. H.
name: Li, L.
name: Ning, P. Z.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The Q value and optimal exciting energy of the hypothetical superheavy nuclei in cold fusion reaction are calculated with relativistic mean field model and semiemperical shell model mass equation(SSME) and the validity of the two models is tested. The fusion barriers are also calculated with two different models and reasonable results are obtained. The calculations can give useful references for the experiments in the superheavy nuclei synthesized in cold fusion reactions.
description: 6 pages, 4 tables
Magnetism in Rb$_{x}$Sr$_{1-x}$C novel alloy
Creators: name: Berrezzoug, D. B.
name: Lakdja, A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report a study on the electronic and magnetic properties of a novel Rb$_{x}$Sr$_{1-x}$C alloy. We find that the variation of the lattice parameter as function of Rb composition exhibits a deviation from the Vegard's law of about 0.4 Å. The total energy results predict a ferromagnetic ordering for Sr-rich alloy, and antiferromagnetic ordering for RbC-rich alloy with a total magnetic moment ranging from 2 to 3$μ_\text{B}$ per cation. As for the parent compounds, RbC and SrC, the origin of magnetism arises from the polarization of the carbon $p$-orbitals. From the spin-polarized calculations, we note that the half-metallicity in the Rb$_{x}$Sr$_{1-x}$C alloy is confirmed for $x<0.875$. On the other hand, a direct band gap is observed in the semiconducting spin part, in contrast to the pure parent compounds.
description: 8 pages, 6 figures
title: Baustatische Modellbildung im Fertighausbau : Optimierung bestehender Strukturen
Creators: name: Gunzer, Wilhelm- Franz
Publisher: name: TU Wien
Year: 2017
Subjects: subject: Fertighausbau

description: In Österreich wurden im Jahr 2015 rund 4.370 Einfamilienhäuser in Fertigbauweise errichtet. Davon entfallen 2.443 Fertighäuser auf die Mitglieder des österreichischen Fertighausverbandes, was einen Anteil von 57,8 Prozent darstellt.a Die Firma GRIFFNER Fertighaus GmbH ist Mitglied des österreichischen Fertighausverbandes und produzierte im Jahr 2015 rund 80 Häuser.b Im Rahmen dieser Diplomarbeit wurde im Zusammenarbeit mit GRIFFNER ein Teil der Statik eines Fertighauses näher betrachtet. Anhand unterschiedlicher Strategien baustatischer Modellbildung wird vorab eine möglichst einfache, zeitsparende und realitätsnahe Vorgehensweise zur späteren Modellierung von Decken- und Wandscheiben untersucht. Mit Umsetzung der Erkenntnisse auf die reale 3D-Teilstruktur des GRIFFNER Fertighauses wird die Anwendbarkeit der Vorgehensweise demonstriert und die Auswirkungen bei Vernachlässigung bestimmter Parameter gezeigt. Durch die dreidimensionale baustatische Modellbildung soll eine wirklichkeitsnahe Lastabtragung ins Fundament, ausgelöst durch die einwirkende Belastung, aufgezeigt werden. Darüber hinaus können viele Vorgänge, welche bei einer zweidimensionalen Eingabe händisch vorgenommen werden müssten, automatisch in der 3D-Struktur berücksichtigt werden. Beispielsweise können Auswirkungen, welche sich durch Änderungen in der Belastung (oder in der Gebäudestruktur) ergeben, sofort für alle Bauteile des Gebäudes automatisch ermittelt und visualisiert werden.
description: In 2015 approximately 4.370 pre-fabricated single family houses were built in Austria. Thereof 2.443 houses can be allocated to the Austrian Association of Prefabricated Housing, which represents a share of 57,8%.a The company GRIFFNER Fertighaus GmbH is a member of the Austrian Association and produced approximaltey 80 buildings in 2015.b In the course of this master thesis parts of the structure of a prefabricated house have been analyzed in collaboration with GRIFFNER. As a first step, investigations are carried out on the basis of different structural modelling schemes to find a simple, time-saving and lifelike approach for the later modelling of ceiling and wall panels. Secondly, the applicability of the developed approach should be demonstrated by implementing the obtained knowledge on parts of the real 3D-structure of GRIFFNER. Moreover, certain effects are shown when neglecting several parameters. With the help of a three-dimensional input of modelling data a lifelike transfer of loads to the foundation, caused by forces acting on the building, could be enabled. Further, many transactions, which have to be carried out by hand when using a two-dimensional input format, are automatically included in the 3Dstructure. As an example, effects caused by changes in the load (or in the building structure) could be immediately determined for all building components in a mechanical way.
Topological mass term in effective Brane-World scenario with torsion
Creators: name: Braga, Nelson R. F.
name: Ferreira, Cristine N.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work we investigate a braneworld scenario where a Kalb-Ramond field propagates, together with gravity, in a five dimensional AdS slice. The rank-2 Kalb-Ramond field is associated with torsion. We study the compactification of the Kalb-Ramond field to four dimensional space-time without gauge fixing, focusing on the effects of torsion. On the brane the Kalb-Ramond field interacts with $A_μ$-gauge and scalar matter fields. We analyze the propagators of this theory and as an application investigate the consistency of such a model in the presence of a cosmic string configuration. One interesting feature of this model is the presence of topological charge coming from a topological mass term that couples the gauge field $A_μ$ with Kalb-Ramond modes.
description: 14 pages, LATEX
MedCPT: Contrastive Pre-trained Transformers with Large-scale PubMed Search Logs for Zero-shot Biomedical Information Retrieval
Creators: name: Jin, Qiao
name: Kim, Won
name: Chen, Qingyu
name: Comeau, Donald C.
name: Yeganova, Lana
name: Wilbur, W. John
name: Lu, Zhiyong
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Retrieval (cs.IR)
subject: Artificial Intelligence (cs.AI)
subject: Computation and Language (cs.CL)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Information retrieval (IR) is essential in biomedical knowledge acquisition and clinical decision support. While recent progress has shown that language model encoders perform better semantic retrieval, training such models requires abundant query-article annotations that are difficult to obtain in biomedicine. As a result, most biomedical IR systems only conduct lexical matching. In response, we introduce MedCPT, a first-of-its-kind Contrastively Pre-trained Transformer model for zero-shot semantic IR in biomedicine. To train MedCPT, we collected an unprecedented scale of 255 million user click logs from PubMed. With such data, we use contrastive learning to train a pair of closely-integrated retriever and re-ranker. Experimental results show that MedCPT sets new state-of-the-art performance on six biomedical IR tasks, outperforming various baselines including much larger models such as GPT-3-sized cpt-text-XL. In addition, MedCPT also generates better biomedical article and sentence representations for semantic evaluations. As such, MedCPT can be readily applied to various real-world biomedical IR tasks.
description: The MedCPT code and API are available at https://github.com/ncbi/MedCPT
Mitigation of Social Exclusion in Regions and Rural Areas – E-learning with Focus on Content Creation and Evaluation
Creators: name: Stočes, Michal
name: Masner, Jan
name: Jarolímek, Jan
name: Stočes, Michal
name: Masner, Jan
name: Jarolímek, Jan
Publisher: name: Unknown
Year: 2015
Subjects: subject: Research Methods/ Statistical Methods
subject: Teaching/Communication/Extension/Profession
subject: Lifelong learning
subject: educational materials
subject: online
subject: LMS
subject: e-learning
subject: WWW
subject: mobile devices
subject: applications

description: Study materials and learning in general is moving online nowadays. The paper deals with lifelong learning of socially disadvantaged people. Inhabitants of rural areas represent a substantial group there. The fundamental disproportion of digital divide emerges in combination with other factors, which impacts generally. The problem requires a solution then. The main target groups selected for the study are women on maternity leave, seniors and unemployed school graduates. One of the main focuses was on educational materials and their creation and sharing. Several researches such as semi-structured interviews and surveys have been made among the groups. The results show several requirements for e-learning systems and materials. Taking the everything into account, prototype e-learning applications have been developed (web and mobile).
title: St. Colman's: a Case Study in Teachers' Perspectives: History Teachers in Context
Creators: name: O'Boyle, Ailish
Publisher: name: The Open University
Year: 2000

description: This case study researches teachers’ perspectives within St. Colman’s, a large voluntary secondary school in rural Ireland. It investigates History teachers as a group of subject teachers within this context. ‘Perspectives’ are located within the interpretive sociology of symbolic interactionism. The study integrates historical, micropolitical, biographical and epistemological contexts, in a way which constructs the school’s history and the working lives of its teachers. The story’s central theme is how teacher perspectives are the product of the symbiotic relationship between their careers and the school organisation. History teachers’ biographies provide an additional context for examining the role of the subject, the subject department and the curriculum in the formation of perspectives. The thesis is divided into ten chapters. Chapters one and twoestablish this case study as an ethnographic investigation and set out the structure and methodology underpinning the research. The empirical data is presented in two strands, moving from the general to the specific. The first strand, which comprises chapters three, four and five, explores the origin, development and dynamic of teachers’ sub cultures, professional status and identities. Beginning with the wider school organisation, the study moves to the social networks of the staffroom and shows how group culture is the product of teacher socialisation, shared experiences and micropolitical orientations that have their origins in the history of the school and the ‘social dramas’ experienced in times of change. The second strand; chapters six, seven and eight, is a more focused examination of history teachers’ careers. The nature and role of the History department in shaping teachers’ identities and status is explored, while biography, life cycle and career experiences are linked to teachers’ craft knowledge as expressed in their perspectives on history as a subject and their pedagogy in the classroom. The case study concludes that teachers’ perspectives are defined in the context of their careers, which are shaped by changing school structures and processes, the development of teacher sub-cultures and the competing demands made on them as professionals. While their identities are still anchored in their role as teachers, they adopt coping strategies to manage their careers. This can give rise to a self image of disillusionment, and alienation from the school organisation. The study recommends that while greater attention must be paid to cultural leadership in schools, teachers must also be empowered through ideological involvement and professional development to take charge of their own careers.
Cavity magnon polariton based precision magnetometry
Creators: name: Crescini, N.
name: Braggio, C.
name: Carugno, G.
name: Ortolan, A.
name: Ruoso, G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: A photon-magnon hybrid system can be realised by coupling the electron spin resonance of a magnetic material to a microwave cavity mode. The quasiparticles associated with the system dynamics are the cavity magnon polaritons, which arise from the mixing of strongly coupled magnons and photons. We illustrate how these particles can be used to probe the magnetisation of a sample with a remarkable sensitivity, devising suitable spin-magnetometers which ultimately can be used to directly assess oscillating magnetic fields. Specifically, the capability of cavity magnon polaritons of converting magnetic excitations to electromagnetic ones, allows for translating to magnetism the quantum-limited sensitivity reached by state-of-the-art electronics. Here we employ hybrid systems composed of microwave cavities and ferrimagnetic spheres, to experimentally implement two types of novel spin-magnetometers.
description: 7 pages, 3 figures
Pre-main sequence stars
Creators: name: Semkov, Evgeni
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The dissertation presents result from study of Pre-main sequence (PMS) stars that are in the earliest stages of stellar evolution. These young stellar objects are still in the process of formation, and the energy they emit is produced only by gravitational contraction. The main results were obtained with the telescopes at the National Astronomical Observatory Rozhen, as well as with the use of archival photographic observations and spectral observations obtained in collaboration with colleagues from abroad. Our results are obtained by studying the photometric and spectral variability of PMS stars. Our main goal is to study the processes of star formation, the formation of circumstellar disks, the structure of the circumstellar environment and the interaction of the star-disk system. The results of our research have been published in 65 scientific papers that have been cited over 300 times.
 The photometric and spectral variability of PMS stars is of great importance for modeling star formation processes. On the one hand, photometric variability allows us to easily detect young objects, since they are characterized by rapid variability and in many cases with large amplitudes. On the other hand, stars form in groups and are physically located in the same geometric space, and several variable objects that are at approximately the same stage of evolution can be observed simultaneously. Comparing star systems of different ages can be used to trace the stages of stellar evolution.
description: Summary of dissertation for the degree of Doctor of Sciences, Dissertation language: Bulgarian, DSc awarded 2023 by the Institute of Astronomy and NAO of the Bulgarian Academy of Sciences
Impact of Hybrid Intelligent Computing in Identifying Constructive Weather Parameters for Modeling Effective Rainfall Prediction
Creators: name: Sudha, M.
name: Valarmathi, B.
name: Sudha, M.
name: Valarmathi, B.
Publisher: name: Unknown
Year: 2015
Subjects: subject: Community/Rural/Urban Development
subject: Crop Production/Industries
subject: Research Methods/ Statistical Methods
subject: Rainfall prediction modeling
subject: hybrid computing
subject: rough set
subject: optimal feature reduction
subject: artificial neural network
subject: fuzzy inference algorithm and accuracy.

description: Uncertain atmosphere is a prevalent factor affecting the existing prediction approaches. Rough set and fuzzy set theories as proposed by Pawlak and Zadeh have become an effective tool for handling vagueness and fuzziness in the real world scenarios. This research work describes the impact of Hybrid Intelligent System (HIS) for strategic decision support in meteorology. In this research a novel exhaustive search based Rough set reduct Selection using Genetic Algorithm (RSGA) is introduced to identify the significant input feature subset. The proposed model could identify the most effective weather parameters efficiently than other existing input techniques. In the model evaluation phase two adaptive techniques were constructed and investigated. The proposed Artificial Neural Network based on Back Propagation learning (ANN-BP) and Adaptive Neuro Fuzzy Inference System (ANFIS) was compared with existing Fuzzy Unordered Rule Induction Algorithm (FURIA), Structural Learning Algorithm on Vague Environment (SLAVE) and Particle Swarm OPtimization (PSO). The proposed rainfall prediction models outperformed when trained with the input generated using RSGA. A meticulous comparison of the performance indicates ANN-BP model as a suitable HIS for effective rainfall prediction. The ANN-BP achieved 97.46% accuracy with a nominal misclassification rate of 0.0254 %.
Continuity properties of integral kernels associated with Schroedinger operators on manifolds
Creators: name: Bruening, Jochen
name: Geyler, Vladimir
name: Pankrashkin, Konstantin
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mathematical Physics (math-ph)
subject: Functional Analysis (math.FA)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 47D08 (Primary); 47B25, 47B34 (Secondary)

description: For Schroedinger operators (including those with magnetic fields) with singular (locally integrable) scalar potentials on manifolds of bounded geometry, we study continuity properties of some related integral kernels: the heat kernel, the Green function, and also kernels of some other functions of the operator. In particular, we show the joint continuity of the heat kernel and the continuity of the Green function outside the diagonal. The proof makes intensive use of the Lippmann-Schwinger equation.
description: 38 pages, major revision; to appear in Annales Henri Poincare (2007)
Additional file 1 of Cognitive flexibility predicts attitudes towards vaccination: evidence from a New Zealand sample
Creators: name: Gomes-Ng, Stephanie
name: Wood, Jay K.
name: Cowie, Sarah
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Neuroscience
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Supplementary Material 1
RanPAC: Random Projections and Pre-trained Models for Continual Learning
Creators: name: McDonnell, Mark D.
name: Gong, Dong
name: Parveneh, Amin
name: Abbasnejad, Ehsan
name: Hengel, Anton van den
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Continual learning (CL) aims to incrementally learn different tasks (such as classification) in a non-stationary data stream without forgetting old ones. Most CL works focus on tackling catastrophic forgetting under a learning-from-scratch paradigm. However, with the increasing prominence of foundation models, pre-trained models equipped with informative representations have become available for various downstream requirements. Several CL methods based on pre-trained models have been explored, either utilizing pre-extracted features directly (which makes bridging distribution gaps challenging) or incorporating adaptors (which may be subject to forgetting). In this paper, we propose a concise and effective approach for CL with pre-trained models. Given that forgetting occurs during parameter updating, we contemplate an alternative approach that exploits training-free random projectors and class-prototype accumulation, which thus bypasses the issue. Specifically, we inject a frozen Random Projection layer with nonlinear activation between the pre-trained model's feature representations and output head, which captures interactions between features with expanded dimensionality, providing enhanced linear separability for class-prototype-based CL. We also demonstrate the importance of decorrelating the class-prototypes to reduce the distribution disparity when using pre-trained representations. These techniques prove to be effective and circumvent the problem of forgetting for both class- and domain-incremental continual learning. Compared to previous methods applied to pre-trained ViT-B/16 models, we reduce final error rates by between 20% and 62% on seven class-incremental benchmarks, despite not using any rehearsal memory. We conclude that the full potential of pre-trained models for simple, effective, and fast CL has not hitherto been fully tapped. Code is at github.com/RanPAC/RanPAC.
description: 32 pages, 11 figures
The van der Waals idea of pseudo associations and the critical compressibility factor
Creators: name: Bakai, O.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The dimensionless value of critical compressibility factor in the van der Waals theory of gas-liquid critical point is a universal constant, $Z_\text{c} = 0.375$. Experimentally measured values of this quantity for simple fluids are considerably smaller than the theory prediction. Van der Waals once assumed that this discrepancy can be removed by taking account of the impact of the molecular pseudo-associations on the fluid criticality but he did not complete a proper modification of his theory following up on this idea. The communication is devoted to the filling of this gap.
description: 5 pages, 1 table
Additional file 6 of Optimizing 16S rRNA gene profile analysis from low biomass nasopharyngeal and induced sputum specimens
Creators: name: Claassen-Weitz, Shantelle
name: Sugnet Gardner-Lubbe
name: Kilaza S. Mwaikono
name: Elloise Du Toit
name: Zar, Heather J.
name: Nicol, Mark P.
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 6. Sequencing reproducibility is associated with participant age at specimen collection, 16S rRNA gene copy numbers and read counts.
Analysis of Operating Costs of Subsidies in the Field of Agriculture of EU Countries
Creators: name: Svoboda, J.
name: Lososová, Jana
name: Zdeněk, R.
name: Svoboda, J.
name: Lososová, Jana
name: Zdeněk, R.
Publisher: name: Unknown
Year: 2015
Subjects: subject: Production Economics
subject: Public Economics
subject: Research Methods/ Statistical Methods
subject: Agriculture
subject: Common Agricultural Policy
subject: operational subsidies
subject: outputs
subject: inputs.

description: The article deals with comparison of agricultural subsidies in the member states of the EU in the period 2004-2012 based on the database Farm Accountancy Data Network (FADN). During the monitored period we found a slight increase of operational subsidies with the fact that variability shows a decreasing trend. In the structure of subsidies we can see a clear transition to payments separated from production with significant differences between original member states and new member states (NMS). With the help of cluster analysis the member states were divided into groups according to their operational subsidies, total production and costs. With the use of correlation analysis we assessed the relationships between production, costs and operational subsidies re-counted per ha of utilised agricultural area. The increase of subsidies will not occur in higher cost productivity and only very slightly will it occur in the higher share of subsidized costs.
Proof of principle for template synthesis approach for the radio emission from vertical extensive air showers
Creators: name: Desmet, Mitja
name: Buitink, Stijn
name: Huege, Tim
name: Butler, David
name: Engel, Ralph
name: Scholten, Olaf
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The radio detection technique of cosmic ray air showers has gained renewed interest in the last two decades. While the radio experiments are very cost-effective to deploy, the Monte-Carlo simulations required to analyse the data are computationally expensive. Here we present a proof of concept for a novel way to synthesise the radio emission from extensive air showers in simulations. It is a hybrid approach which uses a single microscopic Monte-Carlo simulation, called the origin shower, to generate the radio emission from a target shower with a different longitudinal evolution, primary particle type and energy. The method employs semi-analytical relations which only depend on the shower parameters to transform the radio signals in the simulated antennas. We apply this method to vertical air showers with energies ranging from $10^{17}$ eV to $10^{19}$ eV and compare the results with CoREAS simulations in two frequency bands, namely the broad [20, 500] MHz band and a more narrow one at [30, 80] MHz. We gauge the synthesis quality using the maximal amplitude and energy fluence contained in the signal. We observe that the quality depends primarily on the difference in $X_{\text{max}}$ between the origin and target shower. After applying a linear bias correction, we find that for a shift in $X_{\text{max}}$ of less than 150 $\text{g}/\text{cm}^2$ , template synthesis has a bias of less than 2% and a scatter up to 6%, both in amplitude, on the broad frequency range. On the restricted [30, 80] MHz range the bias is similar, but the spread on amplitude drops down to 3%. These fluctuations are on the same level as the intrinsic scatter we observe in Monte-Carlo ensembles. We therefore surmise the observed scatter in amplitude to originate from intrinsic shower fluctuations we do not explicitly account for in template synthesis.
Safety for human-robot interaction
Creators: name: Kulić, Danica
Publisher: name: University of British Columbia
Year: 2010

description: This thesis develops human-robot interaction strategies that ensure the safety of the human participant through planning and control. The control and planning strategies are based on explicit measures of danger during interaction. The level of danger is estimated based on factors influencing the impact force during a human-robot collision, such as the effective robot inertia, the relative velocity and the distance between the robot and the human. A danger criterion is developed for use during path planning based on static and quasi-static danger factors, such as the relative distance and the overall robot inertia. A planner algorithm is proposed that minimizes this criterion. A danger index, developed for the real-time safe control module, tracks dynamic danger parameters such as the relative velocity and the effective inertia at the impact point. The safe control module uses this index to identify and respond to real-time hazards not anticipated in the planning stage. Both the planning and the real-time safe control strategy have been tested in simulation and experiments. Another key requirement for improving safety is the ability of the robot to perceive its environment, and specifically the human behavior and reaction to robot movements. This thesis also examines the feasibility of using human monitoring information (such as head rotation and physiological monitoring) to further improve the safety of the human robot interaction. A human monitoring module is developed using machine vision and physiological signal monitoring. The vision component tracks the location of the human in the robot's workspace, as well as the human head orientation. The physiological signal component monitors the human physiological signals such as heart rate, perspiration rate, and muscle contraction, and estimates the human emotional response based on these signals. If anxiety or stress is detected, the robot takes corrective action to respond to the human's distress. The planning, control and human monitoring components are integrated in a robotic system and tested with human subjects. A systematic and safe interaction strategy utilizing the methods described above, and applicable to a range of human-robot interaction tasks, is presented.
Minisuperspace, WKB, Quantum States of General Relativistic Extended Objects
Creators: name: Ansoldi, Stefano
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The dynamics of relativistic thin shells is a recurrent topic in the literature about the classical theory of gravitating systems and the still ongoing attempts to obtain a coherent description of their quantum behavior. Certainly, a good reason to make this system a preferred one for many models is the clear, synthetic description given by Israel junction conditions. Using some results from an effective Lagrangian approach to the dynamics of spherically symmetric shells, we show a general way to obtain WKB states for the system; a simple example is also analyzed.
description: 3 pages, to appear in the proceedings of the 16th SIGRAV conference on general relativity and gravitational physics
The Efficiency Improvement of Central European Corporate Milk Processors in 2008 - 2013
Creators: name: Špička, Jindřich
name: Špička, Jindřich
Publisher: name: Unknown
Year: 2015
Subjects: subject: Crop Production/Industries
subject: Productivity Analysis
subject: Research Methods/ Statistical Methods
subject: Competitiveness
subject: DEA
subject: financial ratios
subject: Malmquist index.

description: The aim of the article is to evaluate the technical efficiency improvement of the Czech, Polish and Slovak corporate milk processors in the period 2008 – 2013 to identify the possible source of low competitiveness of the Czech and Slovak milk processors towards Poland. The analysis was based on individual data of 130 milk processors (NACE 10.51). The sample covers medium-sized and large companies only. Deflated data on sales, material and energy costs, staff costs and depreciation were used as output and inputs for efficiency calculation. The DEA method was used for calculation of technical efficiency, Malmquist index estimated the efficiency change in time. Two-sample t-test and the analysis of variance enhanced by Sheffe’s test verified the statistical hypotheses. The results proved that the Czech and Slovak milk processors had lower efficiency improvement than Polish companies. Investment activity did not significantly affect the efficiency improvement. The Czech and Slovak milk processors should effectively use quite big amount of public subsidies from the Rural Development Programme in the period 2014 – 2020 to improve the efficiency since the Polish companies outstripped the Czech and Slovak companies in the period 2007 - 2013.
Spin and orbital Edelstein effect in a bilayer system with Rashba interaction
Creators: name: M., Sergio Leiva
name: Henk, Jürgen
name: Mertig, Ingrid
name: Johansson, Annika
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The spin Edelstein effect has proven to be a promising phenomenon to generate spin polarization from a charge current in systems without inversion symmetry. In recent years, a current-induced orbital magnetization, called orbital Edelstein effect, has been predicted for various systems with broken inversion symmetry, using the atom-centered approximation and the modern theory of orbital magnetization. In this work, we study the current-induced spin and orbital magnetization for a bilayer system with Rashba interaction, using the modern theory of orbital magnetization and Boltzmann transport theory in relaxation-time approximation. We found that the orbital effect can be significantly larger than the spin effect, depending on the model parameters. Furthermore, the Edelstein response can be enhanced, suppressed, and even reversed, depending on the relation of the effective Rashba parameters of each layer. A sign change of the orbital polarization is related to an interchange of the corresponding layer localization of the states.
description: Marie Sk{\l}odowska-Curie Actions, H2020-MSCA-ITN-2020; Project acronym SPEAR; Grant Agreement No. 955671 - Revised introduction. - Change unit scale of effective parameters. - Add Appendix A and B. - Correct typos
Horizon Pretracking
Creators: name: Schnetter, Erik
name: Herrmann, Frank
name: Pollney, Denis
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We introduce horizon pretracking as a method for analysing numerically generated spacetimes of merging black holes. Pretracking consists of following certain modified constant expansion surfaces during a simulation before a common apparent horizon has formed. The tracked surfaces exist at all times, and are defined so as to include the common apparent horizon if it exists. The method provides a way for finding this common apparent horizon in an efficient and reliable manner at the earliest possible time. We can distinguish inner and outer horizons by examining the distortion of the surface. Properties of the pretracking surface such as its expansion, location, shape, area, and angular momentum can also be used to predict when a common apparent horizon will appear, and its characteristics. The latter could also be used to feed back into the simulation by adapting e.g. boundary or gauge conditions even before the common apparent horizon has formed.
description: 14 pages, 8 figures, minor changes
Additional file 5 of Optimizing 16S rRNA gene profile analysis from low biomass nasopharyngeal and induced sputum specimens
Creators: name: Claassen-Weitz, Shantelle
name: Sugnet Gardner-Lubbe
name: Kilaza S. Mwaikono
name: Elloise Du Toit
name: Zar, Heather J.
name: Nicol, Mark P.
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 5. Sequencing output from technical repeats (n = 209) stratified by 16S rRNA gene copy numbers and participant age at specimen collection.