cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Interaction of sine-Gordon kinks with defects: The two-bounce resonance
Creators: name: Goodman, Roy H.
name: Haberman, Richard
Publisher: name: arXiv
Year: 2003
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: A model of soliton-defect interactions in the sine-Gordon equations is studied using singular perturbation theory. Melnikov theory is used to derive a critical velocity for strong interactions, which is shown to be exponentially small for weak defects. Matched asymptotic expansions for nearly heteroclinic orbits are constructed for the initial value problem, which are then used to derive analytical formulas for the locations of the well known two- and three-bounce resonance windows, as well as several other phenomena seen in numerical simulations.
description: 26 pages, 17 figures
Rescriber: Smaller-LLM-Powered User-Led Data Minimization for LLM-Based Chatbots
Creators: name: Zhou, Jijie
name: Xu, Eryue
name: Wu, Yaoyao
name: Li, Tianshi
Publisher: name: arXiv
Year: 2024
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Artificial Intelligence (cs.AI)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: The proliferation of LLM-based conversational agents has resulted in excessive disclosure of identifiable or sensitive information. However, existing technologies fail to offer perceptible control or account for users' personal preferences about privacy-utility tradeoffs due to the lack of user involvement. To bridge this gap, we designed, built, and evaluated Rescriber, a browser extension that supports user-led data minimization in LLM-based conversational agents by helping users detect and sanitize personal information in their prompts. Our studies (N=12) showed that Rescriber helped users reduce unnecessary disclosure and addressed their privacy concerns. Users' subjective perceptions of the system powered by Llama3-8B were on par with that by GPT-4o. The comprehensiveness and consistency of the detection and sanitization emerge as essential factors that affect users' trust and perceived protection. Our findings confirm the viability of smaller-LLM-powered, user-facing, on-device privacy controls, presenting a promising approach to address the privacy and trust challenges of AI.
title: The Education, Training and Supply of Teachers in England and Wales, 1963-73: an analysis of policy formation.
Creators: name: Matthews, Peter
Publisher: name: The Open University
Year: 1989

description: This thesis is an historical study of the process of policy I formation for the education, training and supply of teachers in England and Wales during the period 1963 to 1973. The thesis takes as its starting point the events leading up to the publication, in October 1963, of the Report of the Robbins Committee on 'Higher Education', and ends with the policy which emerged as a result of the White Paper, 'Education: a framework for expansion', published by the Department of Education and Science, in December 1972. In the decade followig the publication of the Robbins Report the number of students entering the Colleges and Departments of Education, and consequently the number of teachers enetering the schools, rose from 54,000 to 114,000. Ten years later, however, in December 1972, a change in government policy, outlined in the White Paper, 'Education: a framework for expansion', effectively brought this expansion to an end. Under the terms of this White Paper, the 114,000 student teacher places were to be reduced to between 60,000 and 70,000. During the same decade the expansion in the quantitative supply of teachers was matched by a qualitative change in their education and training, with the introduction of the 'Bachelor of Education' Degree. Despite this, however, and in spite of an earlier decision to increase the normal college course from two to three years, there arose towards the end of the decade growing concern about the 'content' and 'control' of teacher education and training - a concern which led eventually to the seting up of the James Committee. t In January 1972, the Report of the James Committee, 'Teacher Education and Training', was completed. It was immediately published as a Green Paper by the Government and, within twelve months, in Deceber 1972, the White Paper, 'Education: a framework for Expansion', was published by the Department of Education and Science, outlining the Government's policy for the education, training and supply of teachers for the next ten years, and incorporating in it many of the recommendations of the James Report. This thesis aims to analyse the reasons behind these policies for the education, training and supply of teachers - their development, continuity and change - between 1963 and 1973, and in so doing to examine the two dimensions to the study of policy formation, namely 'power' and 'rationality'.
Neural Cross-Lingual Relation Extraction Based on Bilingual Word Embedding Mapping
Creators: name: Ni, Jian
name: Florian, Radu
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computation and Language (cs.CL)
subject: Information Retrieval (cs.IR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Relation extraction (RE) seeks to detect and classify semantic relationships between entities, which provides useful information for many NLP applications. Since the state-of-the-art RE models require large amounts of manually annotated data and language-specific resources to achieve high accuracy, it is very challenging to transfer an RE model of a resource-rich language to a resource-poor language. In this paper, we propose a new approach for cross-lingual RE model transfer based on bilingual word embedding mapping. It projects word embeddings from a target language to a source language, so that a well-trained source-language neural network RE model can be directly applied to the target language. Experiment results show that the proposed approach achieves very good performance for a number of target languages on both in-house and open datasets, using a small bilingual dictionary with only 1K word pairs.
description: 11 pages, Conference on Empirical Methods in Natural Language Processing (EMNLP), 2019
Nonabelian Superconductors: Vortices and Confinement in ${\cal N}=2$ SQCD
Creators: name: Auzzi, Roberto
name: Bolognesi, Stefano
name: Evslin, Jarah
name: Konishi, Kenichi
name: Yung, Alexei
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study nonabelian vortices (flux tubes) in SU(N) gauge theories, which are responsible for the confinement of (nonabelian) magnetic monopoles. In particular a detailed analysis is given of ${\cal N}=2$ SQCD with gauge group SU(3) deformed by a small adjoint chiral multiplet mass. Tuning the bare quark masses (which we take to be large) to a common value $m$, we consider a particular vacuum of this theory in which an SU(2) subgroup of the gauge group remains unbroken. We consider $5 \ge N_f \ge 4$ flavors so that the SU(2) sub-sector remains non asymptotically free: the vortices carrying nonabelian fluxes may be reliably studied in a semi-classical regime. We show that the vortices indeed acquire exact zero modes which generate global rotations of the flux in an $SU(2)_{C+F}$ group. We study an effective world-sheet theory of these orientational zero modes which reduces to an ${\cal N}=2$ O(3) sigma model in (1+1) dimensions. Mirror symmetry then teaches us that the dual SU(2) group is not dynamically broken.
description: 37 pages Latex, 6 eps figures, Typos corrected and a few sentences added or corrected
A usabilidade das bibliotecas digitais: a perspectiva dos leitores/utilizadores
Creators: name: Caldeira, Pedro Zany
Publisher: name: Cadernos BAD
Year: 2003

description: Neste artigo exploram-se algumas diferenças existentes entre bibliotecas convencionais e bibliotecas digitais, dando-se uma ênfase especial à necessidade dos gestores de bibliotecas digitais compreenderem melhor a interacção de um utilizador com uma biblioteca digital. Cabe ao gestor da biblioteca assegurar que os leitores da biblioteca consigam atingir os seus objectivos de forma eficaz, eficiente, segura e confortável. A usabilidade de uma biblioteca digital pode ser assegurada introduzindo-se, desde as etapas iniciais do seu processo de concepção, utilizadores finais da biblioteca, introduzindo momentos de avaliação ao longo de todo o processo de concepção, desenvolvimento e implementação do sistema, de forma iterativa.
description: Cadernos BAD, N.º 2 (2003): Informação, documentação e conhecimento
Blast furnaces rise up one after the other The Taihang [Mountains] are renewed from day to day (高炉层层起 太行日日新)
Creators: name: Wei Kuizhong 魏魁仲
Publisher: name: University of Victoria Libraries
Year: 2022
Subjects: subject: Industrial productivity
valueUri: http://id.worldcat.org/fast/971502
subject: Women
valueUri: http://id.worldcat.org/fast/1176568
subject: Industries
valueUri: http://id.worldcat.org/fast/971852
subject: Women In The Workforce
subject: Modernization

description: An old peasant man and young female welders admire the prospect of modernization. Price: 14 fen
More than Information, other than Knowledge: the Nature of Archives in the Digital Era
Creators: name: Duranti, Luciana
Publisher: name: Cadernos BAD
Year: 2003

description: The nature of archives has been defined over time according to the use made of them. The records of an archival fonds have been considered facts, acts, sources, evidences and, in more recent times, equated with information and even knowledge. This evolution is mostly linked to the use of digital technology for creating records and the consequent blurring of the boundaries among the various types of digital objects generated within electronic systems. This trend is undermining our ability to create records that are reliable and to maintain archives so that they can be proven authentic over the long term. It is therefore essential to re-establish a concept of archives based on the circumstances of its creation, to define the characteristics that distinguish records from any other digital entity, and to protect them in trusted recordkeeping system capable of ensuring that their nature will be altered intentionally or accidentally.
description: Cadernos BAD, N.º 2 (2003): Informação, documentação e conhecimento
Finitely supertranslated Schwarzschild black hole and its perturbations
Creators: name: Hou, Shaoqi
name: Lin, Kai
name: Zhu, Zong-Hong
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: A finitely supertranslated Schwarzschild black hole possesses nontrivial super-Lorentz charges compared with the standard one. This may impact the quasinormal modes of the black hole. Since the Einstein's equations are generally covariant, the quasinormal modes of a supertranslated black hole can be obtained by supertranslating the familiar results for a standard black hole. It turns out that the supertranslated quasinormal modes can be obtained by simply shifting the retarded time of the standard modes by an angle-dependent function parameterizing the supertranslation. Therefore, the supertranslated quasinormal modes oscillate at the same frequencies and decay at the same rates as the corresponding standard ones. The supertranslated metric is time translation invariant, but does not explicitly respect spherical symmetries, although it is implicitly rotationally symmetric. So the supertranslated perturbations can still be written as linear combinations of the eigenfunctions of the generalized angular momentum operators for the underlying rotational symmetry. With a suitably defined asymptotic parity transformation, any perturbation can be decomposed into the even and odd parity parts. Then, one may conclude that the isospectrality still holds. To detect such supertranslated quasinormal modes, one has to place multiple gravitational wave interferometers around the supertranslated black hole, and measure the differences in the time shifts between interferometers. Gravitational lensing may also be helpful in the same spirit.
description: 20 pages, 0 figure.Improved discussion on angular momentum operators. Added the discussion on the covariant boundary conditions. Accepted for publication in Phys. Rev. D
Omni-resonant space-time wave packets
Creators: name: Shiri, Abbas
name: Yessenov, Murat
name: Aravindakshan, Rohinraj
name: Abouraddy, Ayman F.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We describe theoretically and verify experimentally a novel class of diffraction-free pulsed optical beams that are `Omni-resonant': they have the remarkable property of transmission through planar Fabry-Perot resonators without spectral filtering even if their bandwidth far exceeds the cavity resonant linewidth. Ultrashort wave packets endowed with a specific Spatio-temporal structure couple to a \textit{single} resonant mode independently of its linewidth. We confirm that such `space-time' Omni-resonant wave packets retain their bandwidth (1.6~nm), Spatio-temporal profile (1.3-ps pulse width, 4-$μ$m beam width), and diffraction-free behavior upon transmission through cavities with resonant linewidths of 0.3-nm and 0.15-nm.
WMAP Constraints on Decaying Cold Dark Matter
Creators: name: Ichiki, Kiyotomo
name: Oguri, Masamune
name: Takahashi, Keitaro
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We re-formulate cosmological perturbations in the decaying cold dark matter model, and calculate cosmological microwave background (CMB) anisotropies. By comparing our theoretical predictions with recent observational data from the Wilkinson Microwave Anisotropy Probe(WMAP), we derive a new bound on the abundance and lifetime of decaying dark matter particles. We show that the data of WMAP alone do not prefer the decaying cold dark matter model: the lifetime is constrained to Γ^{-1}> 123 Gyr at 68% C.L. (52 Gyr at 95.4% C.L.) when cold dark matter consists only of such decaying particles. We also consider a more general case in which cold dark matter consists of both stable and decaying particles, and show that the constraint generalizes down to Ω_{DDM}h^2 < -0.5 (Gamma^{-1}/1 Gyr)^{-1}+0.12 for Γ^{-1} > 5 Gyr at 95.4% C.L.. These bounds are robust and widely applicable, because they are derived only from gravitational effects and therefore do not rely on the details of decay channels or decay products.
description: 4 pages, 4 figures, typos corrected, results unchanged, accepted for publication in PRL
title: Nostrum: Constraint Directed Diagnosis
Creators: name: Nuttall, Simon
Publisher: name: The Open University
Year: 1990

description: This thesis describes the design, implementation and use of NOSTRUM, a computer program that diagnoses faults in electrical and mechanical devices. The diagnosis is driven from a model of the components of the device. The model itself represents the operating principles of the component parts of the device. By choosing to model the operating principles on a constraint based system it is easy to predict the consequences of infringement of those operating principles, and also to back propagate from an observed symptom to a hypothesized fault. NOSTRUM interacts with the user, proposing tests to perform on the device and asking if the predicted consequences of a hypothesis are observed. NOSTRUM allows experiential knowledge in the form of fault models to be added to modify and speed up its search strategy. At a general level NOSTRUM can perform diagnosis in novel situations, pinpointing a break in the structure of the device whilst not necessarily being able to describe the nature of that break.
A Least-Squares-Based Neural Network (LS-Net) for Solving Linear Parametric PDEs
Creators: name: Baharlouei, Shima
name: Taylor, Jamie M.
name: Uriarte, Carlos
name: Pardo, David
Publisher: name: arXiv
Year: 2024
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: G.1.2; G.1.8
subject: 35A17, 68T07

description: Developing efficient methods for solving parametric partial differential equations is crucial for addressing inverse problems. This work introduces a Least-Squares-based Neural Network (LS-Net) method for solving linear parametric PDEs. It utilizes a separated representation form for the parametric PDE solution via a deep neural network and a least-squares solver. In this approach, the output of the deep neural network consists of a vector-valued function, interpreted as basis functions for the parametric solution space, and the least-squares solver determines the optimal solution within the constructed solution space for each given parameter. The LS-Net method requires a quadratic loss function for the least-squares solver to find optimal solutions given the set of basis functions. In this study, we consider loss functions derived from the Deep Fourier Residual and Physics-Informed Neural Networks approaches. We also provide theoretical results similar to the Universal Approximation Theorem, stating that there exists a sufficiently large neural network that can theoretically approximate solutions of parametric PDEs with the desired accuracy. We illustrate the LS-net method by solving one- and two-dimensional problems. Numerical results clearly demonstrate the method's ability to approximate parametric solutions.
description: It is very important to mention all fund sources, specifically this one: the Marie Sklodowska-Curie grant agreement No 101119556 (IN-DEEP)
Livros e Publicações Periódicas
Creators: name: Cunha, Rosalina Silva
name: Peixoto, Jorge
name: Portocarrero, António
name: Sousa, José Manuel Mota
name: Sousa, Maria Armanda Almeida
name: Mendes, Maria Teresa Pinto
name: Pereira, Joaquim Tomaz Miguel
Publisher: name: Cadernos BAD
Year: 2003

description: BOUTEMY, André - Évolution de la paléographie latine, in «Phoibos, Bulletin du Cercle de Philologie Classique et Orientale de I 'Université Libre de Bruxelles., 10-12 (1): 1962, p. 25-43. GUTENMAKHER, L. I. - Tratamiento . electrónico de la información. Madrid, Paraninfo, 1964, 1 vol., 179 p., 22 X 16, 150 pesetas. Encontro (Primeiro) de Escritores Portugueses. Programa e catálogo da exposição bibliográfica. Porto, Circulo de Almeida Garrett, 1965. 1 vol., 302 p., 22 cm. BIBLIOTECONOMIA, 21 (59-60): Barcelona, Janeiro-Dezembro, 1964. COLLEGE & RESEARCH LIBRARIES - July 1965, Volume 26, nº 4. BULLETIN DES BIBLIOTHEQUES DE FRANCE, Paris, 10(3) Março 1965: 67-106, *143-*225: (1). BULLETIN DE L'UNESCO À L'INTENTION DES BIBLIOTHEQUES, 19(2): Paris, Março/Abril 1965. DOCUMENTAÇÃO CIENTÍFICA
description: Cadernos BAD, N.º 4 (1965)
Do farmers and the environment benefit from adopting IPM practices? Evidence from Kenya
Creators: name: Tefera, T.
name: Kassie, M.
name: Midingoyi, S.
name: Muriithi, B.
name: Tefera, T.
name: Kassie, M.
name: Midingoyi, S.
name: Muriithi, B.
Publisher: name: Unknown
Year: 2018
Subjects: subject: Environmental Economics and Policy
subject: Farm Management
subject: International Development
subject: economic impact
subject: environmental impact
subject: human health impact
subject: integrated pest management
subject: Kenya
subject: mango

description: In this article, we estimate the impacts of a bundle of integrated pest management (IPM) practices on mango yield, mango net income, human health and the environment, using recent household survey data of mango growers in Kenya. We employ multinomial endogenous switching treatment regression model with an ordered probit selection rule to establish counterfactual outcomes, while controlling for potential selection bias. The environmental and human health effects of chemical insecticide use are quantified by employing the environmental impact quotient method. The analysis reveals that, while IPM-adopting farmers have higher mango yields and mango net income, they also use lower quantities of insecticide and cause less damage to the environment and to human health. In addition, switching from one IPM to multiple IPM practices generates even higher economic, environmental and human health benefits. The findings also reveal that variables such as training on insect pest management, exposure to IPM as proxied by the number of adopters within a village, membership of rural institutions, and income share from mango crops positively and significantly influence the probability of a farmer using a bundle of IPM practices. These positive outcomes can be achieved through providing adequate technical support and extension services to farmers.
Superconducting Spiral Phase in the two-dimensional t-J model
Creators: name: Sushkov, Oleg P.
name: Kotov, Valeri N.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We analyse the t-t'-t''-J model, relevant to the superconducting cuprates. By using chiral perturbation theory we have determined the ground state to be a spiral for small doping δ<< 1 near half filling. In this limit the solution does not contain any uncontrolled approximations. We evaluate the spin-wave Green's functions and address the issue of stability of the spiral state, leading to the phase diagram of the model. At t'=t''=0 the spiral state is unstable towards a local enhancement of the spiral pitch, and the nature of the true ground state remains unclear. However, for values of t' and t'' corresponding to real cuprates the (1,0) spiral state is stabilized by quantum fluctuations (``order from disorder'' effect). We show that at δ= 0.119 the spiral is commensurate with the lattice with a period of 8 lattice spacings. It is also demonstrated that spin-wave mediated superconductivity develops in the spiral state and a lower limit for the superconducting gap is derived. Even though one cannot classify the gap symmetry according to the lattice representations (s,p,d,...) since the symmetry of the lattice is spontaneously broken by the spiral, the gap always has lines of nodes along the (1,\pm 1) directions.
description: 17 pages, 11 figures
Typologies of education and training pathways for general practitioners: a scoping review
Creators: name: Hoang, Janice
name: Mattick, Karen
name: Baumfield, Vivienne
Publisher: name: Taylor & Francis
Year: 2020
Subjects: Medicine
Science Policy

description: Introduction: Variation in medical education and training amongst countries is well reported but evidence syntheses of similarities and differences are rare. We developed a typology of education and training pathways for General Practitioners (or equivalent) based on a scoping review of international peer-reviewed literature. Methods: Applying search terms such as ‘General practice’ or ‘Family medicine’ and ‘medical education or training’ in Ovid Medline, Embase, and ERIC, identified studies published since 2010 describing education and training pathways for GPs. Inclusion criteria were used to select studies for data extraction and thematic analysis to characterise distinct typologies. Results: 90 articles were included in the scoping review of which 47 discussed both undergraduate and postgraduate programmes and three typologies based on GPs’ role in the healthcare system identified: ‘Gatekeeper’: Patients cannot access secondary or tertiary service without GP referral. ‘Doctor of choice’: Patients can choose to see a specialist and access secondary or tertiary care directly. ‘Team member’: Patients can access a network of health professionals in the community. Conclusion: The typology provides a reference for medical educators and policymakers. Conceptualising the diversity in education and training pathways can inform the implementation of educational and training transformation for GPs in different contexts.
Comentários e Notícias
Creators: name: BAD, Cadernos
Publisher: name: Cadernos BAD
Year: 2003

description: - O II Encontro dos Bibliotecários e Arquivistas Portugueses - Os bibliotecários-arquivistas na organização das bibliotecas portuguesas - Simpósio sobre a utilização da informação científico-técnica - Luanda, 19 a 24 de Julho de 1965 - Exposição de livros latino-americanos - Normas portuguesas - Congresso da FID - Actividades de «Cadernos» - Notícias Várias
description: Cadernos BAD, N.º 4 (1965)
Emergency Water Supply for the UBC Vancouver Campus
Creators: name: Kaya, Yekta Cemal
name: Liu, Mengyang
name: Philps, Davis
name: Roldan, Daryl
name: Senior, Matt
Publisher: name: The University of British Columbia
Year: 2021

description: In the event of a failure of the main water supply to the UBC Vancouver Campus, an alternative source of water must be relied on. To address this need, Team 22 completed a final technical design for an emergency groundwater supply that provides a safe, sustainable, and resilient source of water for UBC’s population during an emergency. The final design consists of ten groundwater wells that will draw water from the aquifer located in the Quadra Sand Layer beneath the UBC campus. Both the wells and storage structures are in the Arthur Lord, Frank Buck, and Wolfson East fields in the southern section of campus, just east of Thunderbird stadium. The design makes use of a high production rate for a quick provision of water and minimal pump usage. The multiple wells provide ample resilience to the system allowing it to be confidently relied upon in an emergency. Due to the permanent underground storage tank, it will also allow UBC to use it for regular operation and lower their reliance upon Metro Vancouver. The design was evaluated based on criteria concerning economic, environmental, and social aspects to fully evaluate the designs sustainability. Team 22 has estimated the total cost of the project to be $2.66 million, including costs for the construction of the wells and storage tank, as well as operations and maintenance of the system. Construction of the project will take part in three main phases: well construction, storage construction, and project finalisation. It is expected to begin in May 2021 and last for 38 days. Detailed breakdown of the construction schedule and cost estimate are provided in the body of the report. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Cooling rate and turbulence in the intracluster medium of the cool-core cluster Abell 2667
Creators: name: Lepore, M.
name: Pinto, C.
name: Tozzi, P.
name: Gaspari, M.
name: Gastaldello, F.
name: Liu, A.
name: Rosati, P.
name: van Weeren, R.
name: Cresci, G.
name: Iani, E.
name: Rodighiero, G.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a detailed analysis of the thermal X-ray emission from the intracluster medium (ICM) in the cool-core galaxy cluster Abell 2667 ($z=0.23$). Our goal is to detect low-temperature ($<2$ keV) X-ray emitting gas, potentially associated to a cooling flow that connects the hot ICM reservoir to the cold gas phase responsible for star formation and supermassive black hole feeding. We use new deep XMM-Newton EPIC and RGS data, combined with archival Chandra data, to perform a spectral analysis for the core region. We find 1$σ$ upper limits to the cooling gas fraction of $\sim$40 $\rm M_{\odot}yr^{-1}$ and $\sim$50-60 $\rm M_{\odot}yr^{-1}$ in the temperature ranges 0.5-1 keV and 1-2 keV, respectively. The lack of OVII, FeXXI-FeXXII, and FeXVII emission lines in the RGS spectra suggest that the fraction of gas cooling below 1 keV is limited to a few tens of $\rm M_{\odot}yr^{-1}$ at most. However, we detect several lines (e.g. SiXIV, MgXII, FeXXIII/FeXXIV, NeX, OVIII$α$) that allow us to estimate a 1$σ$ upper limit for turbulent broadening of $\sim$320 km $\rm s^{-1}$, higher that other cool-core clusters such as Abell 1835, implying mechanisms that boost turbulence in Abell 2667's atmosphere. Imaging analysis of Chandra data suggests the presence of a cold front, possibly lined to sloshing or ICM cavities. However, current data do not clearly identify the physical mechanism driving turbulence. These finding indicate that Abell 2667 is similar to other low-redshift cool-core clusters, though the large upper limit on turbulence hints at significant ICM heating, which may suppress cooling for extended periods and contribute to future condensation events.
Quantum walks: the first detected transition time
Creators: name: Liu, Q.
name: Yin, R.
name: Ziegler, K.
name: Barkai, E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the quantum first detection problem for a particle evolving on a graph under repeated projective measurements with fixed rate $1/τ$. A general formula for the mean first detected transition time is obtained for a quantum walk in a finite-dimensional Hilbert space where the initial state $|ψ_{\rm in}\rangle$ of the walker is orthogonal to the detected state $|ψ_{\rm d}\rangle$. We focus on diverging mean transition times, where the total detection probability exhibits a discontinuous drop of its value, by mapping the problem onto a theory of fields of classical charges located on the unit disk. Close to the critical parameter of the model, which exhibits a blow-up of the mean transition time, we get simple expressions for the mean transition time. Using previous results on the fluctuations of the return time, corresponding to $|ψ_{\rm in}\rangle = |ψ_{\rm d}\rangle$, we find close to these critical parameters that the mean transition time is proportional to the fluctuations of the return time, an expression reminiscent of the Einstein relation.
Como deverá ser feita a entrada principal de obras do tipo da seguinte:
Creators: name: BAD, Cadernos
Publisher: name: Cadernos BAD
Year: 2003

description: Como deverá ser feita a entrada principal de obras do tipo da seguinte: «Archives de l'État à Liege. Inventaire des archives du prieuré & de la seigneurie d'Aywaille, par Étienne Hélin, archiviste-paléographe. - Bruxelles, 1956» que são resultado da actividade do autor na sua qualidade de funcionário dependente de uma instituição, a qual toma a responsabilidade da publicação da obra?
description: Cadernos BAD, N.º 4 (1965)
gpsbound: A command for importing and verifying geographical information from a user-provided shapefile
Creators: name: Brophy, Tim S. L.
name: Daniels, Reza Che
name: Musundwa, Sibongile
name: Brophy, Tim S. L.
name: Daniels, Reza Che
name: Musundwa, Sibongile
Publisher: name: Unknown
Year: 2015
Subjects: subject: Research Methods/ Statistical Methods
subject: gpsbound
subject: spatial data
subject: point-in-polygon
subject: GPS coordinates
subject: shapefile
subject: attribute table

description: Geographical coordinates such as Global Positioning System (GPS) latitude and longitude estimates form the foundation of many spatial statistical methods. gpsbound allows users to 1) import geographical information from the attribute table of a polygon shapefile based on the identified location of GPS coordinates in a Stata dataset, and 2) check whether the GPS coordinates lie within the bounds of a polygon demarcated in the shapefile (for example, enumeration areas or primary sampling units). gpsbound also allows users to work with spatial data in Stata without the use of Geographical Information System software.
Search for the Higgs boson decays to a $ρ^0$, $ϕ$, or K$^{*0}$ meson and a photon in proton-proton collisions at $\sqrt{s}$ = 13 TeV
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Three rare decay processes of the Higgs boson to a $ρ$(770)$^0$, $ϕ$(1020), or K$^{*}$(892)$^0$ meson and a photon are searched for using $\sqrt{s}$ = 13 TeV proton-proton collision data collected by the CMS experiment at the LHC. Events are selected assuming the mesons decay into a pair of charged pions, a pair of charged kaons, or a charged kaon and pion, respectively. Depending on the Higgs boson production mode, different triggering and reconstruction techniques are adopted. The analyzed data sets correspond to integrated luminosities up to 138 fb$^{-1}$, depending on the reconstructed final state. After combining various data sets and categories, no significant excess above the background expectations is observed. Upper limits at 95% confidence level on the Higgs boson branching fractions into $ρ$(770)$^0$$γ$, $ϕ$(1020)$γ$, and K$^{*}$(892)$^0γ$ are determined to be 3.7 $\times$ 10$^{-4}$, 3.0 $\times$ 10$^{-4}$, and 3.0 $\times$ 10$^{-4}$, respectively. In case of the $ρ$(770)$^0$$γ$ and $ϕ$(1020)$γ$ channels, these are the most stringent experimental limits to date.
description: Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/HIG-23-005 (CMS Public Pages)
Consumer Preferences for Country of Origin Labelling on Dairy Products
Creators: name: Norris, A.
name: Cranfield, J.
name: Norris, A.
name: Cranfield, J.
Publisher: name: Unknown
Year: 2018
Subjects: Farm Management
International Development
Livestock Production/Industries

description: CETA means that the Canadian marketplace for dairy products will begin to see an increased presence of dairy products imported from the EU. Activity related to TPP and NAFTA also means there is potential for increased imports of dairy products from the TPP member states and NAFTA partners. In light of this, it is important to understand how Canadian consumers will respond to the increased presence of dairy products. We develop a discrete choice experiment to explore what trade-offs Canadian consumers make across different dairy product attributes. These attributes include price, country-of-origin (COO), the method of production (i.e., conventional versus organic), nature of the brand (national, regional, or store), and traceability. We apply the analysis to two types of cheese (Gouda and cheddar), ice cream, and yogurt. Results indicate there are statistically significant premiums and discounts associated with COO, and which vary with the dairy product. What is more, we find large premiums for the presence of traceability programs for all four of the respective dairy products, suggesting that the absence of assurances related to traceability may mute actual market penetration arising from increased access to the Canadian dairy market.
title: Evaluation and development of the zone method for modelling metal heating furnaces
Creators: name: Tucker, Robert James
Publisher: name: The Open University
Year: 1990

description: The zone method of radiation analysis in hot enclosures has been widely applied to the modelling of industrial fuel-fired J plant. Many of these models apply a single zone or a longitudinal series of zones (a long furnace model) to represent the hot enclosure. In the latter case, radiation interchange between zones is often ignored in order to reduce^ the number of geometric exchange areas that must be calculated. If radiation interchange is included, the furnace is often represented as a simple rectangular or cylindrical enclosure in order to facilitate the calculation of these exchange areas. Furthermore, most models only simulate plant operating under steady-state thermal conditions. In this study, both steady-state and transient long furnace models have been developed which are capable of simulating some of the typical geometries used for metal heating applications. For this purpose, a Monte-Carlo technique has been applied to calculate the radiation exchange areas. n Exchange areas calculated by this technique, are compared to those obtained by more accurate numerical integration. ^ Although large errors can occur for some zone pairs, the effect of these errors on predicted thermal performance of furnaces is shown to be insignificant. The steady-state model (SSZONE) predicts the thermal efficiency and temperatures within a furnace operating continuously at a constant metal throughput. These conditions are rarely achieved in practical metal heating applications. The transient model (TRZONE) was therefore developed to simulate the cold start-up of a furnace and its performance over a realistic operating period, such as a single or double shift. The effects of changes in metal throughput rate can also be simulated. TRZONE uses a one-dimensional finite difference technique to calculate the non-steady-state thermal conduction through the load and the walls, roof and hearth of the furnace. Both models have been validated by comparison against experimental data obtained from a continuous steel reheating furnace and a small batch heat treatment furnace. In both cases acceptable agreement was obtained. Finally, examples of the application of these models for practical design have been produced, including an evaluation of alternative methods of flue gas heat recovery on a continuous reheating furnace, and an evaluation of the influence of refractory wall emissivity on furnace thermal efficiency.
Deformation of Weyl Modules and Generalized Parking Functions
Creators: name: Feigin, B.
name: Loktev, S.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: Local Weyl modules over two-dimensional currents with values in $gl_r$ are deformed into spaces with bases related to parking functions. Using this construction we 1) propose a simple proof that dimension of the space of diagonal coinvariants is not less than the number of parking functions; 2) describe the limits of Weyl modules in terms of semi-infinite forms and find the limits of characters; 3) propose a lower bound and state a conjecture for dimensions of Weyl modules with arbitrary highest weights. Also we express characters of deformed Weyl modules in terms of $ρ$-parking functions and the Frobenius characteristic map.
description: 17 pages, LaTeX
title: Building control: its development and application 1840-1936
Creators: name: Ley, Anthony James
Publisher: name: The Open University
Year: 1990

description: The thesis investigates the origin of building control in England and Wales (excluding London) and proceeds to trace the evolution of the system through the various Acts of Parliament and building byelaws. The growth of control is examined and the problems of administration and enforcement are discussed. The thesis tends to concentrate on the social and political issues that surrounded the growth of control, although reference is made to the technological problems of defining standards, restriction of innovation and economics. Much of the thesis concerns the parliamentary battles between the sanitary reformers and speculative developers, the implications of which resulted in a growing intervention by Central Authority at the expense of Local Authority control, who remained responsible for administration of building control within their respective areas. The enquiries into the law and its enforcement are considered and the findings tend to show that control by government circular is no substitute for up dating the law, which was eventually achieved in the Public Health Act of 1936. The need for building standards, defined by law, to reflect technological innovation and be capable of easy enforcement is shown together with the need to ensure that those standards are enforced uniformly by Local Authorities who appoint persons having professional competence comparable to that of designers and builders. Byelaws founded on traditional building materials and methods were /primarily introduced to improve the construction of low cost housing. The extension of building control to industrial and public buildings and the specific ways in which byelaws were structured showed that technological innovation and development were often hindered until a more scientific approach was adopted. But despite this disadvantage the aims of the byelaws were generally met. The thesis shows that there are considerable benefits to society in having controls on buildings in that standards defined by law can result in improved environmental and social conditions, economies of standardisation and uniformity of installation. But these benefits can be eroded by the profits of speculation and avoidance, indifferent administration or enforcement and lack of professional standards of surveyors.
Uniqueness and energy bounds for static AdS metrics
Creators: name: Chruściel, Piotr T.
name: Galloway, Gregory J.
name: Potaux, Yohan
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We show that Wang's proof of uniqueness of Anti-de Sitter spacetime can be adapted to provide uniqueness results for strictly static asymptotically locally hyperbolic vacuum metrics with toroidal infinity, and to prove negativity of the free energy $E-TS$ of asymptotically AdS black holes with higher-genus horizons.
Cobordism independence of Grassmann manifolds
Creators: name: Das, Ashish Kumar
Publisher: name: arXiv
Year: 2004
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 55N22, 57R75

description: This note proves that, for $F = \Bbb{R,C}$ or $\Bbb{H}$, the bordism classes of all non-bounding Grassmannian manifolds $G_k(F^{n+k})$, with $k < n$ and having real dimension $d$, constitute a linearly independent set in the unoriented bordism group ${\frak{N}}_d$ regarded as a ${\Bbb{Z}}_2$-vector space.
description: 6 pages, no figures, no tables
title: The management of delegated systems of school finance with special reference to the operation of the Cheshire Cost Centre scheme
Creators: name: Davies, K
Publisher: name: The Open University
Year: 1990

description: Initially the historical development of moves towards delegated school finance is outlined. This is followed by a critical review of English and American experience of delegated school finance to isolate the key factors in the successful operation of delegated finance in schools. The theoretical basis of resource management is then reviewed by considering the perspectives that can be drawn from budgetary theory to establish an framework for analysing delegated school finance in practice. The case study research focuses on the LEA and school level. The LEA research reviews the development of the Cheshire "Cost Centre" scheme from 1975-85. It then evaluates the impact of the scheme at school level at the end of this period. Monitoring of LEA policy developments between 1986 and 1988 traces the attempt to gain consensus between the LEA and the Trade Union representatives on increased financial devolution. The breakdown of consensus and the use of political decision-making approaches are revealed as external national pressures forces the LEA into more radical changes. The school research evaluates in detail the operation of delegated finance over a two-year period in an 11-18 Cheshire comprehensive school from 1986 to 1988. The case study examines how the flexibility of financial provision is used in the resource management process. There is an analysis of the way in which rational and political management approaches are utilised as a basis for resource decision-making by the participants in the school. By reviewing theory and practice in the final chapter, the thesis presents a number of conclusions. In assessing whether a rational approach correctly describes the resource management process in delegated finance schools an unproven verdict is arrived at. Significant political and rational elements in decision-making are evident and a combination of perspectives is required to correctly explain the process. The lessons that can be learnt by other schools are threefold. Firstly, the key management areas from the literature review in Chapter Two (p38) provide a checklist of questions for the successful management of delegation. Secondly, the analytical framework in Chapter Three (p57/60) does provide a method of assessing delegated resource management in schools. Thirdly and most significantly, it is essential to move away from an input-based approach in the operation of delegated finance and to consider how the flexibility of delegated finance can be used to more effectively meet the needs of pupils in the 1990"s.
title: A Theoretical Study of Silylamides
Creators: name: Lane, Thomas Howard
Publisher: name: The Open University
Year: 1990

description: Silylation is an important reaction in organosilicon and related chemistries. It involves the reversible exchange of an active hydrogen for a silyl group, generally trimethysilyl, which dramatically alters the physical and chemical characteristics of the original molecule. Among the various classes of silylating agents available, the silylamides are the most interesting. This class of silylating agent has demonstrated thermodynamic silylating power which spans over seven orders of magnitude. The structural complexity of these materials appears to be related to their reaotivity and includes both tautomeric and rotameric species. The work presented here, explores this novel class of materials. The hindered rotation of silylamides, the 1,3-migration of silicon between nitrogen and oxygen in these materials, and some of their conformational effects on the silylation process are examined using both semiempirical quantum mechanical methods and ah initio techniques. The computational data presented here, supports what is known about the rotational and tautomeric behaviour of silylamides and silylformamide. We have successfully calculated the torsional barrier for a series of materials and explained some of their unique electronic and chemical characteristics. The activated 5-coordinate intermediate for the 1,3- migration of silicon between nitrogen and oxygen has been characterized and an estimated activation energy for the process given. The reaction of N-silylformamide and 0-silylformimide with water was studied. Those data suggest that the O- silylimidate tautomer is the preferred tautomeric species for the silylation of water. A calculated energy profile for each reaction is given and explained. Several semiempirical molecular orbital methods were evaluated during this work and those findings are described and compared to ab initio results.