cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Engineering and Experimentally Benchmarking a Container-based Edge Computing System
Creators: name: Carpio, Francisco
name: Delgado, Marta
name: Jukan, Admela
Publisher: name: arXiv
Year: 2020
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: While edge computing is envisioned to superbly serve latency sensitive applications, the implementation-based studies benchmarking its performance are few and far between. To address this gap, we engineer a modular edge cloud computing system architecture that is built on latest advances in containerization techniques, including Kafka, for data streaming, Docker, as application platform, and Firebase Cloud, as realtime database system. We benchmark the performance of the system in terms of scalability, resource utilization and latency by comparing three scenarios: cloud-only, edge-only and combined edge-cloud. The measurements show that edge-only solution outperforms other scenarios only when deployed with data located at one edge only, i.e., without edge computing wide data synchronization. In case of applications requiring data synchronization through the cloud, edge-cloud scales around a factor 10 times better than cloud-only, until certain number of concurrent users in the system, and above this point, cloud-only scales better. In terms of resource utilization, we observe that whereas the mean utilization increases linearly with the number of user requests, the maximum values for the memory and the network I/O heavily increase when with an increasing amount of data.
title: The Development of High-Throughput and High-Precision Analytical Methods for the Screening of Drugs of Abuse in Biological Matrices
Creators: name: Guthery, Bill
Publisher: name: The Open University
Year: 2009

description: The qualitative determination of various opiates and benzodiazepines in human serum is described using a two-dimensional gas chromatograph (GC x GC) coupled to a time of flight mass spectrometer (TOFMS). Human serum was 'spiked' with known quantities of benzodiazepines and a 'street heroin' mixture including some of the major metabolites and impurities. The sample components were extracted from the matrix by solid phase extraction (SPE). Constituents containing polar hydroxyl and/or secondary amine groups were derivatised with N-methyl-N-(tert-butyldimethyl)trifluoracetamide (MTBSTFA) to improve the chromatographic performance.

The sensitivity and repeatability of the method were evaluated by the preparation of calibration standards for flunitrazepam and its major metabolite 7-aminoflunitrazepam (7-amino- FN), in the concentration range 5- 1000 ng/ml. The limits of detection (LOD) and limits of quantitation (LOQ), calculated by repeat injections (x10) of the lowest standard, were 1.6 and 5.4 ng/ml (flunitrazepam); 2.5 and 8.5 ng/ml (7-amino-FN), respectively.

A qualitative analysis of hair samples provided by an external collaborator was performed and various drug types detected including opiates, cocaine, methadone and diazepam. The analysis also identified many of the minor components in street drugs which may help forensic scientists to identify the source of the drug.

We propose a method to extract and analyse the pseudo-endogenous drug, gamma-hydroxybutyric acid (GHB), in urine, by gas chromatography-combustion-isotope ratio mass spectrometry (GC-C-IRMS).

Urine samples (<1.62 μg/ml endogenous GHB) were 'spiked' with 10 μg/ml synthetic GHB, extracted using SPE and derivatised with BSTFA. We obtained δ13C values for 3 x reference standards (#1 mean -31.7 ‰; σn-1 0.15; n=3: #2 mean -34.0 ‰; σn-1 0.85; n=3: #3 mean -42.2 ‰; σn-1. 0.64; n=3).

Selective extraction of GHB by affinity chromatography was investigated as a means to improve the sensitivity. A method was developed to synthesise tetrahydro-5-oxo-3-furanyl acetic acid (furanyl acetic acid) which was identified to contain the GHB sub-structure. It was postulated that the reaction of this compound with the lysine residues of a protein would produce an antigen whereby antibodies, with specific binding sites to GHB, could be created.
Dust-to-gas ratios in the Kepler supernova remnant
Creators: name: Contini, M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A new method to evaluate the dust-to-gas ratios in the Kepler SNR is presented. Dust emission in the infrared and bremsstrahlung are calculated consistently, considering that dust grains are collisionally heated by the gas throughout the front and downstream of both the expanding and the reverse shocks. The dust-to-gas ratios are determined by the ratio of the dust emission bump and bremsstrahlung in the infrared. A maximum dust mass < 0.16 Mo is calculated.
description: 12 pages+5 figures, accepted for publication in A&A
Ratio vectors of polynomial-like functions
Creators: name: Horwitz, Alan
Publisher: name: arXiv
Year: 2005
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: Let $p(x)$ be a polynomial like function of the form $p(x)=(x-r_{1})^{m_{1}}... (x-r_{N})^{m_{N}}$, where $m_{1},...,m_{N}$ are given positive real numbers and $r_{1}
description: Submitted for publication to the Journal of Inequalities in Pure and Applied Mathematics--21 pages. No figures. Replacement and revision of math.CA/0509488
title: Sub-Unit Vaccines for Brucella
Creators: name: Jenner, Dominic Charles
Publisher: name: The Open University
Year: 2009

description: Brucella species are the causative agents of brucellosis, which is regarded as the world's most prevalent zoonotic disease. Brucellosis is endemic to the Middle East, Mexico, Asia, South America and the Mediterranean and causes significant economic losses in livestock in these areas of the world, as well as being a reservoir for human brucellosis. Although there are live attenuated vaccines available for brucellosis, they have many drawbacks when used in animals, and are still infectious to humans. It is clear from this that there is a need for a new effective vaccine for brucellosis for both animal and human use.

There are increasing instances of ATP-binding cassette (ABC) systems being identified as virulence factors or potential vaccine candidates. In this study inventories of all the ABC systems encoded by five sequenced Brucella strains were compiled. These inventories were compared and differences have been found that could aid in the identification of virulence factors of Brucella. This study also explores the potential of ATP-binding cassette transporters as sub-unit vaccines against Brucella melitensis 16M. Eight ABC transporter proteins (PotD, PotF, Cgt, CydD, LolE, FbpA, OppA and ZnuA) have been produced using recombinant protein technologies, and their protective efficacy was evaluated in a number of studies using the murine model of B. melitensis infection. Of the eight vaccine candidates selected two have shown potential as novel vaccines against brucellosis. PotD and PotF are putative polyamine binding proteins of Brucella and show protection against experimental challenge of approximately 1x104 CFU of B. melitensis 16M when expressed by DNA vaccines or used in a PotD/PotF combination vaccine. Through this work a duel adjuvant system (ISCOMs and CpG) has been identified as a more effective adjuvant for Brucella vaccines than others previously used.
The Three-Loop Splitting Functions in QCD: The Singlet Case
Creators: name: Vogt, A.
name: Moch, S.
name: Vermaseren, J. A. M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the next-to-next-to-leading order (NNLO) contributions to the splitting functions governing the evolution of the unpolarized flavour-singlet parton densities in perturbative QCD. The exact expressions are presented in both Mellin-N and Bjorken-x space. We also provide accurate parametrizations for practical applications. Our results agree with all partial results available in the literature. As in the non-singlet case, the correct leading logarithmic predictions for small momentum fractions x do not provide good estimates of the respective complete splitting functions. We investigate the size of the corrections and the stability of the NNLO evolution under variation of the renormalization scale. The perturbative expansion appears to converge rapidly at x >~ 10^-3. Relatively large third-order corrections are found at smaller values of x.
description: 41 pages, Latex, 12 figures
The path to Z And-type outbursts: The case of V426 Sagittae (HBHA 1704-05)
Creators: name: Skopal, A.
name: Shugarov, S. Yu.
name: Munari, U.
name: Masetti, N.
name: Marchesini, E.
name: Komzik, R. M.
name: Kundra, E.
name: Shagatova, N.
name: Tarasova, T. N.
name: Buil, C.
name: Boussin, C.
name: Shenavrin, V. I.
name: Hambsch, F. -J.
name: Dallaporta, S.
name: Frigo, A.
name: Garde, O.
name: Zubareva, A.
name: Dubovský, P. A.
name: Kroll, P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The star V426 Sge (HBHA~1704-05), originally classified as an emission-line object and a semi-regular variable, brightened at the beginning of August 2018, showing signatures of a symbiotic star outburst. We aim to confirm the nature of V426 Sge as a classical symbiotic star, determine the photometric ephemeris of the light minima, and suggest the path from its 1968 symbiotic nova outburst to the following 2018 Z And-type outburst. We re-constructed an historical light curve (LC) of V426 Sge from approximately the year 1900, and used original low- and high-resolution spectroscopy complemented with Swift-XRT and UVOT, optical UBVRcIc and near-infrared JHKL photometry obtained during the 2018 outburst and the following quiescence. The historical LC reveals no symbiotic-like activity from 1900 to 1967. In 1968, V426 Sge experienced a symbiotic nova outburst that ceased around 1990. From approximately 1972, a wave-like orbitally related variation with a period of $493.4\pm 0.7$ days developed in the LC. This was interrupted by a Z And-type outburst from the beginning of August 2018 to the middle of February 2019. At the maximum of the 2018 outburst, the burning white dwarf (WD) increased its temperature to $>2\times 10^5$ K, generated a luminosity of $\sim 7\times 10^{37}(d/3.3kpc)^2$ erg/s, and blew a wind at the rate of $\sim 3\times 10^{-6}$ M$_{\odot}$/yr. The donor is a normal M4-5 III giant and the accretor is a low-mass $\sim$0.5 M$_{\odot}$ WD. During the transition from the symbiotic nova outburst to the quiescent phase, a pronounced sinusoidal variation along the orbit develops in the LC of most symbiotic novae. The following eventual outburst is of Z And-type, when the accretion by the WD temporarily exceeds the upper limit of the stable burning. At this point the system becomes a classical symbiotic star.
description: 19 pages, 12 figures, 9 tables, 2 appendices, accepted for A&A, Tables A.1, A.2 and A.3 are only available at the CDS, added references for section 1
CAPITAL SOCIAL E COOPERAÇÃO NA AGRICULTURA FAMILIAR: UMA ANÁLISE COMPARATIVA ENTRE OS ESTADOS DE MATO GROSSO DO SUL E SANTA CATARINA
Social Capital and Cooperation in the Family Farm: a Comparative Analysis Between the State of Mato Grosso do Sul and Santa Catarina
Creators: name: Gonçalves Silva, Gercina
name: Luchese Cheung, Thelma
name: Vilpoux, Olivier Francois
name: Sanches, Fabricia Teixeira
name: Gonçalves Silva, Gercina
name: Luchese Cheung, Thelma
name: Vilpoux, Olivier Francois
name: Sanches, Fabricia Teixeira
Publisher: name: Unknown
Year: 2014
Subjects: subject: Community/Rural/Urban Development
subject: Institutional and Behavioral Economics
subject: Ação coletiva
subject: capital social
subject: confiança
subject: Collective actions
subject: social capital
subject: trust

description: A organização dos agricultores familiares pelas ações cooperativas é uma alternativa para alcance de competitividade. Na cooperação se pressupõe a união das competências individuais, em prol de um objetivo comum ao grupo, sendo, dessa forma, possível superar comportamentos individualistas. Dado que o capital social é definido como a habilidade dos indivíduos em garantir benefícios, por meio de associação em redes de relações sociais, objetivou-se neste trabalho analisar a importância do capital social na implantação de relações cooperativas entre os agricultores familiares dos estados de Mato Grosso do Sul e Santa Catarina. Utilizou-se da pesquisa de campo com aplicação de questionário para 50 agricultores familiares de cada um dos estados. Verificaram-se interações sociais em níveis diferentes nos dois estados. Em Santa Catarina constatou-se um maior desenvolvimento nesse sentido, em relação ao estado de Mato Grosso do Sul, onde se verificou baixo nível de capital social, pelo baixo percentual de participação em organizações, cooperação, confiança e reciprocidade observadas. ----- The organization of family farmers, through cooperative action, is an alternative for achieving competitiveness. In cooperation, we assumed the union of individual skills towards the common goal of the group, allowing the overcoming individualistic behavior. Given that social capital is defined as the ability to secure benefits through association in social relation networks, the objective of this work is to analyze the importance of social capital in implanting cooperative relations between family farmers in the states of Mato Grosso do Sul and Santa Catarina, Brazil. We used field research applying a questionnaire to 50 family farmers in each state, verifying social interactions at different levels in both states. In Santa Catarina we observed further development in this sense, when compared to the state of Mato Grosso do Sul, in which we verified a low level of social capital by the low percentage of participation in organizations, cooperation, trust and reciprocity observed.
African American & Hispanic youth vulnerability to target marketing : implications for understanding the effects of digital marketing
Creators: name: Grier, Sonya
Publisher: name: Berkeley Media Studies Group
Year: 2023
Subjects: classificationCode: 3506
subject: Marketing
subject: FOS: Economics and business

description: "Memo prepared for The Second NPLAN/BMSG Meeting on Digital Media and Marketing to Children for the NPLAN Marketing to Children Learning Community"
Agricultural Recovery in Russia and the Rise of Its South
Creators: name: Rada, Nicholas
name: Liefert, William
name: Liefert, Olga
name: Rada, Nicholas
name: Liefert, William
name: Liefert, Olga
Publisher: name: Unknown
Year: 2017
Subjects: subject: Agricultural and Food Policy
subject: International Relations/Trade
subject: Russia
subject: agricultural output
subject: grain exports
subject: meat production
subject: market economy
subject: trade
subject: Total Factor Productivity (TFP)

description: NA
title: Food Policies In Mexico: An Analysis From The Food System Perspective
Creators: name: Santillan Calzada, Mariana
Publisher: name: Hochschulbibliothek der Technischen Hochschule Köln
Year: 2024
Subjects: subject: 500 Naturwissenschaften und Mathematik

description: In recent years, governments worldwide have set out to ensure food security. However, despite the efforts and resources invested, food for all has not been ensured. In the Mexican context, several strategies, programmes and public policies have taken place in the last 30 years; however, the problem has evolved from an issue of lack of food to one of excess caloric intake, promoting chronic diseases such as diabetes and hypertension, a consequence of the generalisation of overweight and obesity in the population. The problem is complex, and action is required from a whole food system perspective, based on public policies that intervene effectively, promoting healthy lifestyles and strengthening the economy and the equitable distribution of wealth. This study focuses on analysing the problem of food insecurity in Mexico from a food systems perspective, as well as analysing public policies from 1982 to 2024, their evolution and changes in approach, as well as their design and coverage in terms of food security and food improvements. The results of this study show that Mexican public policies have not been effective in ensuring food security for all, nor have they been transversal or consistently applied as a long-term project. In conclusion, Mexican public policies must act in a preventive manner, ensure continuity despite changes in government, and take a food system and human rights perspective.
title: Democratic School Leadership: Perceptions and Practices in Secondary Schools in Kenya
Creators: name: Jwan, Julius Ouma
Publisher: name: The Open University
Year: 2009

description: My study investigates school principals', teachers' and students' perceptions of democratic school leadership in secondary schools in Kenya and how these perceptions inform practices in their schools. The study is set against a background of a recent requirement by the Kenyan Government that school principals adopt democratic school leadership practices. This follows the enactment of the UN charter on the rights of children in 2001 and the subsequent ban on corporal punishment in schools. Very little research exists in this area in Kenya and, indeed, sub-Saharan Africa even though literature reveals that strong school leadership is a key requirement for school success, effectiveness and improvement. Adopting an interpretive-constructionist paradigm, I conducted the study in two phases. In phase one, I interviewed 12 principals to generate background information on democratic school leadership and to select two schools for an in-depth study; one where the principal perceived her/his leadership practices as very democratic and one where the principal viewed her practices as less democratic. Phase two was a 'compressed' ethnographic case study of two schools. I gathered data through semi-structured interviews, observations, focus group discussions and informal conversations. The findings suggest that most principals, teachers and students perceive democratic school leadership as participation in decision making in the school and the right to express their views without inhibitions. The informants' ideas, though not inclusive of all the elements of democracy, are not significantly different from the view of democratic school leadership discussed in the literature - 'rational' perceptions. However, most practices in the schools were not consistent with these perceptions. The schools practised what they referred to as 'partial/guided' democracy, especially when dealing with students - 'culturally embedded' perceptions. This differed between the two schools and was based on the socio-cultural context of each school. Therefore, despite the Government's requirements that schools adopt democratic school leadership, very little attention has been paid to these requirements.
Deep Grouping Model for Unified Perceptual Parsing
Creators: name: Li, Zhiheng
name: Bao, Wenxuan
name: Zheng, Jiayang
name: Xu, Chenliang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The perceptual-based grouping process produces a hierarchical and compositional image representation that helps both human and machine vision systems recognize heterogeneous visual concepts. Examples can be found in the classical hierarchical superpixel segmentation or image parsing works. However, the grouping process is largely overlooked in modern CNN-based image segmentation networks due to many challenges, including the inherent incompatibility between the grid-shaped CNN feature map and the irregular-shaped perceptual grouping hierarchy. Overcoming these challenges, we propose a deep grouping model (DGM) that tightly marries the two types of representations and defines a bottom-up and a top-down process for feature exchanging. When evaluating the model on the recent Broden+ dataset for the unified perceptual parsing task, it achieves state-of-the-art results while having a small computational overhead compared to other contextual-based segmentation models. Furthermore, the DGM has better interpretability compared with modern CNN methods.
description: Accepted by CVPR 2020
title: Multi-Perspective Annotation of Digital Stories for Professional Knowledge Sharing within Health Care
Creators: name: Kwiat, Joanna Hilda
Publisher: name: The Open University
Year: 2009

description: This thesis investigates the potential of narrative theory to inform the design of tools for sharing and annotating stories, in the context of professional knowledge sharing. We begin with a detailed review of the literature on modelling narrative, to establish the theoretical foundations for a narratologically-grounded annotation schema. Medicine is then selected for a tri-part study, since narrative-based approaches in healthcare education and practice are seen by many as significant. The first part seeks evidence of narrative among medical professionals communicating spontaneously and informally online. The frequency and range of stories identified shows that this appears to be a common and valued mode of communication. The second part envisions a Web story database ("storybase") supporting flexible annotation grounded in a narratological metadata scheme. The model draws on various narrative structure theories, and in particular, point-structure. A story can be annotated via a graphical user interface on various dimensions, enabling multiple interpretations. The third part analyses users annotating representative samples of the stories abstracted from the corpus in part 1. Data is analysed quantitatively (annotation value clustering, questionnaire responses and task phase durations) coupled with a qualitative account of participant behaviour based on grounded theory video analysis. While this study has limitations, it validates both the expressiveness and usability of the story annotation schema, and shows that participants found the experience to be enjoyable and stimulating. Interaction analysis demonstrates the centrality of interface design in shaping annotation behaviour. This work motivates further storybase research, in forming the design of future studies and storybase technologies.
Analytic and geometric properties of scattering from periodically modulated quantum-optical systems
Creators: name: Trivedi, Rahul
name: White, Alex
name: Fan, Shanhui
name: Vuckovic, Jelena
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the scattering of photons from periodically modulated quantum-optical systems. For excitation-number conserving quantum optical systems, we connect the analytic structure of the frequency-domain N-photon scattering matrix of the system to the Floquet decomposition of its effective Hamiltonian. Furthermore, it is shown that the first order contribution to the transmission or equal-time N-photon correlation spectrum with respect to the modulation frequency is completely geometric in nature i.e. it only depends on the Hamiltonian trajectory and not on the precise nature of the modulation being applied.
Force-Free Magnetosphere of an Accretion Disk -- Black Hole System. I. Schwarzschild Geometry
Creators: name: Uzdensky, Dmitri A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper I study the magnetosphere of a black hole that is connected by the magnetic field to a thin conducting Keplerian disk. I consider the case of a Schwarzschild black hole only, leaving the more interesting but difficult case of a Kerr black hole to a future study. I assume that the magnetosphere is ideal, stationary, axisymmetric, and force-free. I pay a special attention to the two singular surfaces present in the system, i.e., the event horizon and the inner light cylinder; I use the regularity condition at the light cylinder to determine the poloidal electric current as a function of poloidal magnetic flux. I solve numerically the Grad--Shafranov equation, which governs the structure of the magnetosphere, for two cases: the case of a nonrotating disk and the case of a Keplerian disk. I find that, in both cases, the poloidal flux function on the horizon matches a simple analytical expression corresponding to a radial magnetic field that is uniform on the horizon. Using this result, I express the poloidal current as an explicit function of the flux and find a perfect agreement between this analytical expression and my numerical results.
description: 28 pages, 3 figures; submitted to the Astrophysical Journal; some minor corrections made and a reference added
Vocoder-free End-to-End Voice Conversion with Transformer Network
Creators: name: Kim, June-Woo
name: Jung, Ho-Young
name: Lee, Minho
Publisher: name: arXiv
Year: 2020
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Machine Learning (cs.LG)
subject: Sound (cs.SD)
subject: Machine Learning (stat.ML)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Mel-frequency filter bank (MFB) based approaches have the advantage of learning speech compared to raw spectrum since MFB has less feature size. However, speech generator with MFB approaches require additional vocoder that needs a huge amount of computation expense for training process. The additional pre/post processing such as MFB and vocoder is not essential to convert real human speech to others. It is possible to only use the raw spectrum along with the phase to generate different style of voices with clear pronunciation. In this regard, we propose a fast and effective approach to convert realistic voices using raw spectrum in a parallel manner. Our transformer-based model architecture which does not have any CNN or RNN layers has shown the advantage of learning fast and solved the limitation of sequential computation of conventional RNN. In this paper, we introduce a vocoder-free end-to-end voice conversion method using transformer network. The presented conversion model can also be used in speaker adaptation for speech recognition. Our approach can convert the source voice to a target voice without using MFB and vocoder. We can get an adapted MFB for speech recognition by multiplying the converted magnitude with phase. We perform our voice conversion experiments on TIDIGITS dataset using the metrics such as naturalness, similarity, and clarity with mean opinion score, respectively.
description: Work in progress
It's the Economic Message, Stupid : The Campaign and the Economic Vote
Creators: name: Hart, Austin
Publisher: name: The University of Texas at Austin
Year: 2023
Subjects: classificationCode: 38
subject: Economics

description: Do partisan campaigns affect the strength of the economic vote? Against the controversial expectation that political candidates have little influence over when and to what extent economic voting occurs, I argue that political communications systemically condition the strength of the economy-vote link. I evaluate these competing claims through analysis of the 2006 Mexican presidential election. The Results show that political communications profoundly affect the economic vote. In 2006, economic messages primed economic considerations and proved decisive in determining the election outcome, altering the final vote tally by 8 points. More broadly, the results demonstrate the power of political campaigns to overcome structural conditions thought to advantage or disadvantage incumbent-party candidates. This begins to explain the seemingly anomalous victories of challengers in economic booms and reelection of incumbents in busts.
Nonreciprocity of spin waves in noncollinear magnets due to the Dzyaloshinskii-Moriya interaction
Creators: name: Santos, Flaviano José dos
name: Dias, Manuel dos Santos
name: Lounis, Samir
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Broken inversion symmetry in combination with the spin-orbit interaction generates a finite Dzyaloshinskii-Moriya interaction (DMI), which can induce noncollinear spin textures of chiral nature. The DMI is characterized by an interaction vector whose magnitude, direction and symmetries are crucial to determine the stability of various spin textures, such as skyrmions and spin spirals. The DMI can be measured from the nonreciprocity of spin waves in ferromagnets, which can be probed via inelastic scattering experiments. In a ferromagnet, the DMI can modify the spin-wave dispersion, moving its minimum away from the $Γ$ point. Spin waves propagating with opposite wavevectors are then characterized by different group velocities, energies and lifetimes, defining their nonreciprocity. Here, we address the case of complex spin textures, where the manifestation of DMI-induced chiral asymmetries remains to be explored. We discuss such nonreciprocal effects and propose ways of accessing the magnitude and direction of the DMI vectors in the context of spin-polarized or spin-resolved inelastic scattering experiments. We show that only when a periodic magnetic system has finite net magnetization, that is, when the vector sum of all magnetic moments is nonzero, can it present a total nonreciprocal spin-wave spectrum. However, even zero-net-magnetization systems, such as collinear antiferromagnets and cycloidal spin spirals, can have spin-wave modes that are individually nonreciprocal, while the total spectrum remains reciprocal.
description: 12 figures
It's the Economic Message, Stupid : The Campaign and the Economic Vote
Creators: name: Hart, Austin
Publisher: name: American University
Year: 2023

description: Do partisan campaigns affect the strength of the economic vote? Against the controversial expectation that political candidates have little influence over when and to what extent economic voting occurs, I argue that political communications systemically condition the strength of the economy-vote link. I evaluate these competing claims through analysis of the 2006 Mexican presidential election. The Results show that political communications profoundly affect the economic vote. In 2006, economic messages primed economic considerations and proved decisive in determining the election outcome, altering the final vote tally by 8 points. More broadly, the results demonstrate the power of political campaigns to overcome structural conditions thought to advantage or disadvantage incumbent-party candidates. This begins to explain the seemingly anomalous victories of challengers in economic booms and reelection of incumbents in busts.
About an alternative distribution function for fractional exclusion statistics
Creators: name: Wang, Qiuping A.
name: Mehaute, A. Le
name: Nivanen, L.
name: Pezeril, M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We show that it is possible to replace the actual implicit distribution function of the fractional exclusion statistics by an explicit one whose form does not change with the parameter $α$. This alternative simpler distribution function given by a generalization of Pauli exclusion principle from the level of the maximal occupation number is not completely equivalent to the distributions obtained from the level of state number counting of the fractional exclusion particles. Our result shows that the two distributions are equivalent for weakly bosonized fermions ($α>>0$) at not very high temperatures.
description: 8 pages, 3 eps figures, TeX. Nuovo Cimento B (2004), in press
Spectroscopy of Seven Cataclysmic Variables with Periods Above Five Hours
Creators: name: Thorstensen, John R.
name: Fenton, William H.
name: Taylor, Cynthia J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present spectroscopy of seven cataclysmic variable stars with orbital periods P(orb) greater than 5 hours, all but one of which are known to be dwarf novae. Using radial velocity measurements we improve on previous orbital period determinations, or derive periods for the first time. The stars and their periods are TT Crt, 0.2683522(5) d; EZ Del, 0.2234(5) d; LL Lyr, 0.249069(4) d; UY Pup, 0.479269(7) d; RY Ser, 0.3009(4) d; CH UMa, 0.3431843(6) d; and SDSS J081321+452809, 0.2890(4) d. For each of the systems we detect the spectrum of the secondary star, estimate its spectral type, and derive a distance based on the surface brightness and Roche lobe constraints. In five systems we also measure the radial velocity curve of the secondary star, estimate orbital inclinations, and where possible estimate distances based on the MV(max) vs.P(orb) relation found by Warner. In concordance with previous studies, we find that all the secondary stars have, to varying degrees, cooler spectral types than would be expected if they were on the main sequence at the measured orbital period.
description: 25 pages, 2 figures, accepted for Publications of the Astronomical Society of the Pacific
Supplementary Material from ORNITHOLOGICAL INSIGHTS FROM TAYLOR WHITE'S BIRDS
Creators: name: Javidi, Vida
name: Montgomerie, Robert
Publisher: name: The Royal Society
Year: 2021
Subjects: History

description: The accompanying Supplementary Material describes in more detail the methods we used to score the accuracy of the paintings, as well as the statistical details for the analysis of those accuracy scores. The Supplementary Material as well as the full dataset and code used for analysis is also available online at figshare.
Priming, Projection, or Both? Reevaluating the Classic Media Priming Hypothesis
Creators: name: Hart, Austin
name: Middleton, Joel
Publisher: name: American University
Year: 2023

description: This study reevaluates the classic “media priming” hypothesis, which argues that, when news coverage raises an issue’s salience, voters align their overall evaluation of the president with their assessment of him on that issue. Experimental studies of media priming typically show greater correspondence between overall and issue evaluations among subjects exposed to issue-related news. The greater correspondence in the treatment group is identified as priming. However, this phenomenon is also consistent with another explanation. Precisely the opposite, the “projection” hypothesis argues that voters exposed to issue news align their opinion on the issue with their assessment of the president’s overall performance. Existing experimental studies cannot rule out this alternative explanation, so we conduct a survey experiment to evaluate the priming and projection hypotheses jointly. Despite recent evidence suggesting that projection is the true underlying effect, our findings support the priming hypothesis. This represents the first unconfounded evidence of media priming.
title: Defining the Clinical Spectrum of Sickle Cell Disease in Tanzania: A Clinico-Epidemiological Study
Creators: name: Makani, Julie
Publisher: name: The Open University
Year: 2011

description: Introduction: The burden of Sickle Cell Disease (SCD) in Africa is high; having over 75% of annual global births and mortality reaching 95% in childhood. Introduction of interventions, which could prevent 70% of deaths, have been limited because of lack of local evidence. This study described the clinical spectrum of SCD in Tanzania as the first step in providing evidence to guide targeted interventions.

Methods: SCD patients attending Muhimbili Hospital in Dar-es-Salaam, Tanzania were recruited between 2004 and 2009. Prospective surveillance of clinical and laboratory information was done at outpatient clinic and during hospitalisation. Specific investigations included blood cultures on all hospitalised SCD patients, Transcranial Doppler (TCD) ultrasonography to measure cerebral blood flow velocity (CBFv) and HPLC to measure levels of foetal haemoglobin (HbF). The outcomes of interest were death, hospitalisation, malaria, bacteraemia and stroke.

Results: 1,725 SCD patients [mean age 9.7 (SD 7.9) years; 10% below 2 years] were enrolled with information recorded from 14,000 visits during the study period. 12% of enrolled SCD patients were lost to follow up and 23% of 86 deaths occurred at the hospital. The mortality was 2 deaths/100 person years of observation (PYO); highest under 5 years and independently associated with low haemoglobin (Hazard ratio 0.7 95%CI 0.6-0.8; p0.01). 504 (29%) of the SCD cohort were hospitalised with pain, fever and anaemia as the commonest cause of hospitalisation. SCD patients had less malaria than non-SCD patients at clinic (OR, 0.46; 95% CI, 0.25-0.94; P = .01) and during hospitalisation (OR, 0.53; 95% CI, 0.32-0.86; P = .008). In SCD patients, prevalence of malaria was higher during hospitalisation and associated with severe anaemia and death. 43 out of 890 hospitalisations had bacteraemia (4.8%) with Staphylococcus aureus (28%), non-typhii Salmonella (21%) and Streptococcus pneumoniae (7%) as the most common organisms. The mean CBFv in 372 patients (2 - 16 years) was 132 cm/sec with CBFv > 200cm/sec occurring in 40 (10%) patients. The incidence of stroke was 0.3 per 100PYO; associated with sickle haemoglobin and reticulocyte count but not with CBFv. The mean HbF level in 1,669 SCD patients was 6.3 (SD 4.7) % with no association with mortality and hospitalisation.

Conclusion: This study has highlighted the burden of disease to individuals and health system. The findings have important implications for policies to improve healthcare as well as identifying areas for further research.
Priming, Projection, or Both? Reevaluating the Classic Media Priming Hypothesis
Creators: name: Hart, Austin
name: Middleton, Joel
Publisher: name: The University of Texas at Austin
Year: 2023
Subjects: classificationCode: 38
subject: Economics

description: This study reevaluates the classic “media priming” hypothesis, which argues that, when news coverage raises an issue’s salience, voters align their overall evaluation of the president with their assessment of him on that issue. Experimental studies of media priming typically show greater correspondence between overall and issue evaluations among subjects exposed to issue-related news. The greater correspondence in the treatment group is identified as priming. However, this phenomenon is also consistent with another explanation. Precisely the opposite, the “projection” hypothesis argues that voters exposed to issue news align their opinion on the issue with their assessment of the president’s overall performance. Existing experimental studies cannot rule out this alternative explanation, so we conduct a survey experiment to evaluate the priming and projection hypotheses jointly. Despite recent evidence suggesting that projection is the true underlying effect, our findings support the priming hypothesis. This represents the first unconfounded evidence of media priming.
Concurrent zero-dimensional and one-dimensional biomineralization of gold from a solution of Au3+ and bovine serum albumin
Creators: name: Hartings, Matthew
name: Benjamin, Noah
name: Briere, Floriene
name: Briscione, Maria
name: Choudary, Omar
name: Fisher, Tamra L.
name: Flynn, Laura
name: Ghias, Elizabeth
name: Harper, Michaela
name: Khamis, Nader
name: Koenigsknecht, Catherine
name: Lazor, Klare
name: Moss, Steven
name: Robbins, Elaine
name: Schultz, Susan
name: Yaman, Samiye
name: Haverhals, Luke M.
name: Trulove, Paul C.
name: De Long, Hugh C.
name: Miller, Abigail E.
name: Fox, Douglas
Publisher: name: Science and Technology of Advanced Materials
Year: 2023
Subjects: classificationCode: 4016
subject: Materials engineering
subject: FOS: Materials engineering

description: A technique was developed for preparing a novel material that consists of gold nanoparticles trapped within a fiber of unfolded proteins. These fibers are made in an aqueous solution that contains HAuCl4 and the protein, bovine serum albumin (BSA). By changing the ratio of gold to BSA in solution, two different types of outcomes are observed. At lower gold to BSA ratios (30–120), a purple solution results after heating the mixture at 80 ◦C for 4 h. At higher gold to BSA ratios (130–170), a clear solution containing purple fibers results after heating the mixture at 80 ◦C for 4 h. UV–Vis spectroscopy and light scattering techniques show growth in nanocolloid size as gold to BSA ratio rises above 100. Data indicate that, for the higher gold to BSA ratios, the gold is sequestered within the solid material. The material mass, visible by eye, appears to be an aggregation of smaller individual fibers. Scanning electron microscopy and transmission electron microscopy indicate that these fibers are primarily one-dimensional aggregates, which can display some branching, and can be as narrow as 400 nm in size. The likely mechanism for the synthesis of the novel material is discussed.
Nucleon elastic form factors at accessible large spacelike momenta
Creators: name: Cui, Zhu-Fang
name: Chen, Chen
name: Binosi, Daniele
name: De Soto, Feliciano
name: Roberts, Craig D.
name: Rodriguez-Quintero, Jose
name: Schmidt, Sebastian M.
name: Segovia, Jorge
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A Poincaré-covariant quark+diquark Faddeev equation is used to compute nucleon elastic form factors on $0\leq Q^2\leq 18 \,m_N^2$ ($m_N$ is the nucleon mass) and elucidate their role as probes of emergent hadronic mass in the Standard Model. The calculations expose features of the form factors that can be tested in new generation experiments at existing facilities, e.g. a zero in $G_E^p/G_M^p$; a maximum in $G_E^n/G_M^n$; and a zero in the proton's $d$-quark Dirac form factor, $F_1^d$. Additionally, examination of the associated light-front-transverse number and anomalous magnetisation densities reveals, inter alia: a marked excess of valence $u$-quarks in the neighbourhood of the proton's centre of transverse momentum; and that the valence $d$-quark is markedly more active magnetically than either of the valence $u$-quarks. The calculations and analysis also reveal other aspects of nucleon structure that could be tested with a high-luminosity accelerator capable of delivering higher beam energies than are currently available.
description: 14 pages, 9 figures, 1 table
The nature of the essential spectrum in curved quantum waveguides
Creators: name: Krejcirik, David
name: de Aldecoa, Rafael Tiedra
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mathematical Physics (math-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Spectral Theory (math.SP)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 81Q10, 35Q40, 58J50

description: We study the nature of the essential spectrum of the Dirichlet Laplacian in tubes about infinite curves embedded in Euclidean spaces. Under suitable assumptions about the decay of curvatures at infinity, we prove the absence of singular continuous spectrum and state properties of possible embedded eigenvalues. The argument is based on Mourre conjugate operator method developed for acoustic multistratified domains by Benbernou and Dermenjian et al. As a technical preliminary, we carry out a spectral analysis for Schrodinger-type operators in straight Dirichlet tubes. We also apply the result to the strips embedded in abstract surfaces.
description: LaTeX, 23 pages; revised version accepted for publication (more general results, updated references)
title: Организация и технология документационного обеспечения управления
Creators: name: ELS IPR BOOKS
Publisher: name: Санкт-Петербургский государственный университет промышленных технологий и дизайна
Year: 2019

description: Хрестоматия к учебному курсу «Организация и технология документационного обеспечения управления» предлагает для изучения комплекс документов, включающий федеральные законы и ГОСТы, регламентирующие организацию и ведение документационного обеспечения управления в учреждениях различных форм собственности. Предназначена для студентов заочного отделения ИБК, обучающихся по направлению 46.03.02 – Документоведение и архивоведение.
Methods and methodologies for qualitative data analysis
Creators: name: Friese, Susanne
Publisher: name: Technische Universität Berlin
Year: 2014
Subjects: subject: 300 Sozialwissenschaften
subject: ATLAS.ti
subject: Discourse analysis
subject: Ethnography
subject: Grounded theory
subject: Methodology
subject: Symbolic interaction

description: The main aim of this paper is to introduce the contributions that are published in the proceedings. As a side-line, I follow up on an observation that I made (not only) at the conference – which is the distinction between methods and methodology. I hope that you will enjoy and benefit from reading the articles in the proceedings and watching the corresponding videos of the original presentations on the conference YouTube channel (http://www.youtube.com/user/ATLASticonference).
Macroscopic approach to N-qudit systems
Creators: name: Muñoz, C.
name: Sainz, I.
name: Klimov, A. B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We develop a general scheme for an analysis of macroscopic qudit systems: a) introduce a set of collective observables, which characterizes the macroscopic properties of qudits in an optimal way; b) construct projected $\tilde{Q}$-functions for $N$ qudit systems, containing full macroscopic information; c) propose a collective tomographic protocol both for a general and symmetric $N$-qudit states. The example of $N$-qutrit is analyzed in details and compared to $N$-qubit case
title: Организация и технология испытаний
Creators: name: ELS IPR BOOKS
Publisher: name: Санкт-Петербургский государственный университет промышленных технологий и дизайна
Year: 2019

description: Учебное пособие рассматривает вопросы организации и технологии проведения различных испытаний. Приведены основные понятия о методах и видах испытаний материалов и изделий. Рассмотрены вопросы планирования и автоматизации испытаний, а также раскрыты процедуры аккредитации испытательных лабораторий. Предназначено для студентов, обучающихся по направлению 27.03.01 – Стандартизация и метрология, а также может быть использовано при подготовке студентов других направлений, а также преподавателями, магистрантами, аспирантами и студентами других специальностей для организации самостоятельной работы по изучению методов и процедур проведения испытаний продукции и материалов.