cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Quantifying Floral Resource Availability Using Unmanned Aerial Systems and Machine Learning Classifications to Predict Bee Community Structure
Creators: name: Tabor, Jesse Anjin
Publisher: name: Utah State University
Year: 2022

description: Bees are important for agricultural and non-agricultural ecosystems because they pollinate both wild plants and commercial crops. Flowers provide pollen and nectar resources that bees use to survive and reproduce. Measuring the relationship between the floral community and bee community may help apiarists and land managers to make informed decisions in managing wild and domesticated bee species. Manual methods to describe and count flowering vegetation is costly in time and personnel. Unmanned aerial vehicle (UAV) technology may be an efficient way to describe and count flowering vegetation on a large scale. UAVs with classification analysis and ground transect surveys were used to describe the variation in the flower communities at three field sites in non-agricultural environments. The variation in bee communities were also recorded at the field sites. Seven unique flower species were quantified using UAVs. Using the UAV imagery, it was determined that the period of flowering and changes of flower coverage for different species varied. Twenty-two unique flower species were described and counted using the ground transect surveys and 136 bees from 11 genera were recorded using net surveys. I tested the hypothesis that increased bee diversity and abundance would positively correlate with increased floral diversity and abundance using seven simple linear regression models. I found that the floral resource data collected from ground transect surveys predicts bee diversity, bee richness, and bee abundance. I also found floral abundance data captured by UAVs predicts bee abundance at the field sites. Finally, I found UAV floral abundance predicts ground transect floral abundance suggesting a positive relationship between different sampling methods. My results support previous research that suggests a high diversity of resources will support a high diversity of insects; and habitats with abundant flowers have greater possibilities for partitioning of available resources. My results also support UAVs as an efficient method for describing and counting floral resources in non-agricultural settings. Further research should include using UAV imagery to count flowers to predict bee communities on a landscape scale.
INCLUSIÓN DE LA IVERMECTINA EN LA PRIMERA LÍNEA DE ACCIÓN TERAPÉUTICA PARA COVID-19. Se reporta una muy significativa disminución de la Tasa de Letalidad con su uso
Creators: name: Chang, Gustavo Aguirre
Publisher: name: Zenodo
Year: 2020

description: RESUMEN Se revisa las evidencias existentes en cuanto al uso de Ivermectina en COVID-19. También se hace un reporte de parte de los casos tratados a nivel local. Un estudio publicado en abril en la web en la revista Antiviral Research (posteriormente fue retirado en el mes de junio 2020) obtuvo participantes de 169 hospitales de todo el mundo, este estudio incluye un número elevado de pacientes tratados con Ivermectina: 704 y sus correspondientes 704 controles Los Resultados del estudio indican que la Tasa de Letalidad en los pacientes que usaron Ivermectina fue 6.1 veces menor en comparación con los pacientes que no usaron Ivermectina (1.4 vs 8.5%, p<0.0001). Por su parte, en República Dominicana, el Médico Neumólogo Johnny Tavares reporta que va tratando 247 pacientes con Ivermectina con respuesta favorable en todos los casos y no ha manifestado ningún caso fatal. De manera similar, a nivel local, si bien a la fecha aún no son muchos los casos documentados, la Tasa de Letalidad viene siendo 0% y además se observa que en el 100% de los casos tratados con Ivermectina se presenta una mejoría de la enfermedad y resolución de la fiebre dentro de las 48 horas de iniciado el tratamiento. Se presenta un Nuevo Esquema Terapéutico según el Grado de Severidad y la Respuesta al Tratamiento, elaborado en base a la experiencia de los pacientes tratados a nivel local. En la parte final se hace una evaluación del Riesgo-Beneficio del uso de Ivermectina, se da la Conclusión que, al no existir prácticamente riesgo en su uso, se recomienda formalizar su inclusión en la primera línea de acción terapéutica para COVID-19. Finalmente se da Recomendaciones principalmente relacionadas al abastecimiento en los Establecimientos de Salud de todo el país.
Análise de eventos científicos da América Latina disponibilizados na plataforma Zenodo
Creators: name: Cardoso, Linda Ariene
name: Alano, Tainá
name: Marques, Helena
name: Leite, Jayne
name: Ignacio, Andresa
name: Theisen, Júlio César
name: Umpierre, Daniel
name: Silva, Larissa Xavier Neves da
Publisher: name: Zenodo
Year: 2022

description: Apresentação realizada na sessão O meu Póster em 40 segundos da 13ª Conferência Lusófona de Ciência Aberta, formato híbrido, de 10 a 12 de outubro de 2022.
title: Inclusive health: Medtech innovations for the early detection of cancer in India
Creators: name: Joshi, Pallavi
Publisher: name: The Open University
Year: 2023

description: This interdisciplinary study focuses on understanding the advances in conceptualising inclusive health innovations in low-resource healthcare settings. To this end, this research responds to two main gaps. First, an empirical gap exists to conceptualise inclusiveness in high-technology health innovations in low-resource healthcare settings. Second, no theoretical framework enables studying technical change in the health sector by linking unmet needs with industrial and health systems. In this research, I propose a novel Inclusive Health Innovation (IHI) framework, integrating and extending the sectoral system of innovation approach (Malerba & Mani, 2009) and the qualitative heuristics of the institutional triad of healthcare (Srinivas, 2012). This research employs the IHI framework to conceptualise inclusive innovations using cases of Medtech innovations for the early detection of cancer offered by startups in India. It identifies and investigates the actors and factors influencing various stages of the innovation process, including development, diffusion, and adoption. This research uses qualitative methods, comprising both primary and secondary data, for a landscape study and four case studies of point-of-care MedTech innovations for early detection of breast, oral, and cervical cancer in India. The research finds that MedTech innovations are driving inclusiveness in the early detection of cancer, both in process and outcomes, in low-resource healthcare settings. The analysis reveals a strong alignment of STI policy with industrial and health policies in the form of a robust MedTech ecosystem to support the development of these innovations. As regards diffusion, this thesis pinpoints that startup firms choose various business models, partnerships, and stakeholder interactions to create new markets and generate demand for the early detection of cancer. These are 'pocket wins' in increasing the availability of locally relevant solutions for cancer screening and early diagnosis. The last-mile adoption of these innovations in the healthcare delivery system hinges upon stronger policy alignment and regulatory changes in the health and industrial sector. The thesis contributes a novel theoretical framework and original analysis of rich empirical case studies. The thesis further contributes to observable characteristics of inclusive health innovations in the early detection of cancer in India. The research findings are relevant for designing targeted policy instruments for (i) cancer screening and early diagnosis using high-technology solutions in low-resource healthcare settings, (ii) digital infrastructure and regulations to support the adoption of innovations in the public healthcare system and (iii) data privacy and security for Medtech based on AI and ML.
The Global Diffusion of Social Innovations – An Analysis of Twitter Communication Networks Related to Inclusive Education
Creators: name: Schuster, Johannes
name: Nina, Kolleck
Publisher: name: Freie Universität Berlin
Year: 2020
Subjects: subject: social innovation
subject: social network analysis
subject: inclusive education
subject: Twitter
subject: global diffusion
subject: 300 Sozialwissenschaften::370 Bildung und Erziehung::370 Bildung und Erziehung

description: In recent decades, different social innovations – such as lifelong learning, inclusion or Education for Sustainable Development – have had a huge impact on domestic education systems. In an increasingly globalized world, innovations diffuse across national borders. At the same time, diffusion processes seem to be highly influenced by public and private actors, e.g., international organizations (IOs) or non-governmental organizations (NGOs). Both state and non-state actors use social networks and digital communication platforms, such as Twitter, as channels for the diffusion of social innovations and practices. Inclusive education, which has become the main alternative to special schools for the schooling of children with disabilities, is a widely discussed innovation in education and, hence, represents a suitable case for the study of global diffusion processes and the involved actors. Thus, drawing on social network theory (SNT), the aim of this paper is to examine the structure of the Twitter communication network forming around the social innovation of inclusive education. Empirically, we use social network analysis (SNA) to map the communication network; identify central actors; and infer assumptions about the role of different actor groups. Our results show, for instance, that especially NGOs and IOs hold central positions in the network, which enables them to exert influence on the diffusion of innovative ideas. Overall, the findings of our study indicate how the online communication tool Twitter can play a crucial role for actors who seek to influence the global diffusion of social innovations in education and effect education policies, norms and systems at the global, national and regional levels as such.
Decay of False Vacuum via Fuzzy Monopole in String Theory
Creators: name: Kasai, Aya
name: Ookouchi, Yutaka
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate dielectric branes in false vacua in Type IIB string theory. The dielectric branes are supported against collapsing by lower energy vacua inside spherical or tube-like branes. We claim that such branes can be seeds for semi-classical (or quantum mechanical) decay of the false vacua, which makes the life-time of the false vacua shorter. Also, we discuss a topology change of a bubble corresponding to the fuzzy monopole triggered by dissolving fundamental strings.
description: 18 pages, 7 figures
WIMP searches with gamma rays in the Fermi era: challenges, methods and results
Creators: name: Conrad, Jan
name: Cohen-Tanugi, Johann
name: Strigari, Louis E.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The launch of the gamma-ray telescope Fermi Large Area Telescope (Fermi-LAT) started a pivotal period in indirect detection of dark matter. By outperforming expectations, for the first time a robust and stringent test of the paradigm of weakly interacting massive particles (WIMPs) is within reach. In this paper, we discuss astrophysical targets for WIMP detection and the challenges they present, review the analysis tools which have been employed to tackle these challenges, and summarize the status of constraints on and the claimed detections in the WIMP parameter space. Methods and results will be discussed in comparison to Imaging Air Cherenkov Telescopes. We also provide an outlook on short term and longer term developments.
description: 72 pages, 7 figures, Invited review for Journal of Experimental and Theoretical Physics,v3: added a few references, addressed referee comments
HerMES: ALMA Imaging of Herschel-selected Dusty Star-forming Galaxies
Creators: name: Bussmann, R. S.
name: Riechers, D.
name: Fialkov, A.
name: Scudder, J.
name: Hayward, C. C.
name: Cowley, W. I.
name: Bock, J.
name: Calanog, J.
name: Chapman, S. C.
name: Cooray, A.
name: De Bernardis, F.
name: Farrah, D.
name: Fu, Hai
name: Gavazzi, R.
name: Hopwood, R.
name: Ivison, R. J.
name: Jarvis, M.
name: Lacey, C.
name: Loeb, A.
name: Oliver, S. J.
name: Perez-Fournon, I.
name: Rigopoulou, D.
name: Roseboom, I. G.
name: Scott, Douglas
name: Smith, A. J.
name: Vieira, J. D.
name: Wang, L.
name: Wardlow, J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The Herschel Multi-tiered Extragalactic Survey (HerMES) has identified large numbers of dusty star-forming galaxies (DSFGs) over a wide range in redshift. A detailed understanding of these DSFGs is hampered by the limited spatial resolution of Herschel. We present 870um 0.45" resolution imaging from the Atacama Large Millimeter/submillimeter Array (ALMA) of 29 HerMES DSFGs with far-infrared (FIR) flux densities in between the brightest of sources found by Herschel and fainter DSFGs found in ground-based sub-millimeter (sub-mm) surveys. We identify 62 sources down to the 5-sigma point-source sensitivity limit in our ALMA sample (sigma~0.2mJy), of which 6 are strongly lensed (showing multiple images) and 36 experience significant amplification (mu>1.1). To characterize the properties of the ALMA sources, we introduce and make use of uvmcmcfit, a publicly available Markov chain Monte Carlo analysis tool for interferometric observations of lensed galaxies. Our lens models tentatively favor intrinsic number counts for DSFGs with a steep fall off above 8mJy at 880um. Nearly 70% of the Herschel sources comprise multiple ALMA counterparts, consistent with previous research indicating that the multiplicity rate is high in bright sub-mm sources. Our ALMA sources are located significantly closer to each other than expected based on results from theoretical models as well as fainter DSFGs identified in the LABOCA ECDFS Submillimeter Survey. The high multiplicity rate and low projected separations argue in favor of interactions and mergers driving the prodigious emission from the brightest DSFGs as well as the sharp downturn above S_880=8mJy.
description: Accepted to ApJ. 26 pages, 8 figures, 5 tables
Shared control for hand-held robots
Creators: name: Elsdon, Joshua
Publisher: name: Imperial College London
Year: 2019

description: Hand-held robots are an exciting new extension to the toolkit of hand tools at our disposal. They allow the benefits associated with robots, such as precision and task specific knowledge, to be integrated into a form factor that is convenient and cost effective. This work isolates two categories of hand-held robots: reduced degree of freedom robots must rely on the human for at least some degrees of freedom at the end effector; and locally capable robots have the facility to completely decouple user motion of the handle of the robot from that of the end effector. A robot of each variety is designed and built for a set of five degree of freedom tasks, and algorithms for generating end effector trajectories are implemented for both. Both types of hand-held robots rely on a close collaboration with the user to be successful. To facilitate information flow from the robot to the user an Augmented Reality (AR) headset is used. The level of visualisation detail required to form an effective collaboration is investigated. It is found that the level of detail is less important to performance when the robot has control of the interaction, though high fidelity visualisation are important when the user is in control of the integration. Which agent is in control of the interaction at a tactical and operational level is also analysed. Reduced degree of freedom robots must share these levels of planning with the user, and this is found to cause conflict with some users. Complete allocation of these levels to an agent is possible with locally capable robots. No strong evidence of conflict was observed when these roles were more clearly allocated to the user or the robot.
Tunable nano-plasmonic metamaterials at solid-liquid and liquid-liquid interfaces
Creators: name: Ma, Ye
Publisher: name: Imperial College London
Year: 2019

description: Metamaterials have demonstrated their unusual optical properties, ranging from negative refractive index to optical nonlinearity. Real-time adjustment of these properties becomes critical for the next generation of ‘smart’ optical devices. In this thesis, different methods for actively tuning the structure and output of metamaterials are demonstrated. These metamaterials consist of metallic nanoparticles (NPs) at solid-liquid interfaces (SLIs) and liquid-liquid interfaces (LLIs). Electrically, the assembly of gold NPs at a SLI is reversibly controlled by changing the potential of the solid substrate. As the interparticle distance is adjusted, the corresponding reflectance dip is modulated over the wavelength range 530–580 nm, with intensity changing from 93% to 1%. Moreover, the resulting ‘hot spots’ between adjacent NPs, and between the NP array and the metallic substrate, bring about a tunable surface-enhanced-Raman-scattering (SERS) enhancement of up to ~105 times. Thermal tunablity was achieved by constructing a nanoplasmonic optical switch, with poly(N-isopropylacrylamide) functionalized NPs on a metallic substrate. Within a 20–50 °C temperature window, the interparticle spacing and the separation between the NP array and the substrate can be simultaneously tuned in nanoscale. Chemical bonding between the ligands on NPs and the heavy metal ions is also found to be able to adjust the interparticle distance of the NP array at LLI. For a glutathione functionalized NP array at LLI, an increase in the concentration of lead ions caused the reflectance peak to surge in intensity and to shift towards the red in wavelength. The fast dynamics (<1 min) and the low detection limit (ppb level) render this system an ideal candidate for the label-free detection of heavy metals. These proof-of principle methods demonstrated how electric, thermal and chemical effects could influence the nanoscale arrangement of NP assembly at SLI or LLI, which in return reforms the macroscale optical properties of these interfaces.
Understanding Jets from Sources Straddling the Fanaroff-Riley Divide
Creators: name: Kharb, Preeti
name: Stanley, Ethan
name: Lister, Matthew
name: Marshall, Herman
name: O'Dea, Chris
name: Baum, Stefi
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Results from Chandra-HST-VLA observations of 13 hybrid sources are presented. Data from ten sources in the literature are analysed along with new data from three hybrid blazars belonging to the MOJAVE sample. Studies of such hybrid sources displaying both FRI and FRII jet characteristics could provide the key to resolving the long-standing Fanaroff-Riley dichotomy issue. A majority of the 13 hybrid sources show FRII-like total radio powers, i.e., they are "hybrid" in radio morphology but not in total radio power. VLBI observations of ten of the 13 sources show that the X-ray jet is on the same side as the one-sided VLBI jet. X-rays are therefore emitted from relativistically-boosted approaching jets. This is consistent with the X-ray emission being IC/CMB in origin in the majority of sources. It is not completely clear from our study that asymmetries in the surrounding medium can create hybrid sources. Hybrid radio morphologies could also be indicative of intrinsically asymmetric jets.
description: 9 pages, 3 figures, Invited Talk, To appear in the Proceedings of the IAU Symposium No. 313: "Extragalactic jets from every angle," Galapagos, Ecuador, 15-19 September 2014, F. Massaro, C. C. Cheung, E. Lopez, and A. Siemiginowska (Eds.), Cambridge University Press
Interaction of particles, droplets and turbulent gas flow and consequences for spray drying
Creators: name: Andrade, Paul
Publisher: name: Imperial College London
Year: 2019

description: The interaction of inertial particles and droplets in turbulent gas flow has been investigated with two experiments. In the first experiment, a spray of inertial droplets impinged on a solid particle target, in surrounding turbulent gas which was both homogeneous and isotropic. The growth rate of liquid film, which formed on the target, was quantified and compared to characteristics of the spray. The liquid growth rate was found to vary linearly with the frequency of droplet collisions on the target. The formation of ‘clusters’, observed in the spray using Vorono¨ı analysis, was found to lead to temporal variations to the liquid growth rate. In the second experiment, a rig was designed to investigate the interaction of inertial particles in a stagnating region of turbulent gas flow. The formation of ‘clusters’ were observed using box counting and Vorono¨ı analysis, and their importance discussed relative to spray drying.
title: Trust in Polarised Plural Societies: Intersections Across the Ideological Divides of Women’s Groups in Malaysia
Creators: name: Saleem, Saleena Begum
Publisher: name: University of Liverpool Repository
Year: 2023

description: From Europe to North America to Asia, social groups align with political parties along polarising stances to battle over a range of hot-button culture war issues related to gender and sexuality, race and ethnicity, national identity, and religion in the political sphere. Differences are typically about moral authority, beliefs and values that perceived by both sides of a cultural divide to be irreconcilable and rooted in non-intersecting spheres of the sacred and the secular. Such divides erode social trust. This thesis contributes insights to a neglected research area on the question of trust building between women’s groups as means to mitigate polarisation. Specifically, the thesis examines trust and Malay women’s groups of differing ideological orientations (secular multiracial feminism, Islamic feminism, Islamic revivalism) in Malaysia. One contributing factor to polarisation in Malaysia is the emotive trope of a secular-versus- religious clash over issues involving Islamic law, women, and gender, which is reinforced through ethnic politics, civil society activism, and media frames. Malay women’s groups have in the recent past adopted oppositional stances that contributed to polarising public contention. The thesis interrogates the prospects for different Malay women’s groups to build trust and form cross cutting feminist solidarity despite their ideological differences and history of being on oppositional sides.
An Analysis of Forest Cutting Age with Consideration of Forest Carbon Sequestration
Creators: name: Min, Kyungtaek
name: Min, Kyungtaek
Publisher: name: Unknown
Year: 2011
Subjects: subject: Environmental Economics and Policy
subject: climate change
subject: forest cutting age
subject: carbon sequestration

description: This paper analyzes an optimal forest cutting age for even-aged forest management of Gangwon pines and Korean pines when the carbon sequestration service of a forest is considered. Carbon price and tax will affect the optimal forest cutting age and the carbon storage in forests. It is shown that inclusion of the benefits from carbon sequestration results in cutting ages a bit longer than when the carbon sequestration service has not value. The optimal cutting age is affected by how to deal with the carbon released after harvesting, which is a key issue of “harvested wood products” in the UNFCCC. The more the carbon contents in harvested wood products are, the shorter the optimal cutting age is. And the supply curve of forest carbon sequestration service is inelastic with carbon price. Therefore it is important to maintain the cycle of harvest and replant in the forest carbon offset scheme.
Quantifying the Leakage of Quantum Protocols for Classical Two-Party Cryptography
Creators: name: Salvail, Louis
name: Schaffner, Christian
name: Sotakova, Miroslava
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Cryptography and Security (cs.CR)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We study quantum protocols among two distrustful parties. By adopting a rather strict definition of correctness - guaranteeing that honest players obtain their correct outcomes only - we can show that every strictly correct quantum protocol implementing a non-trivial classical primitive necessarily leaks information to a dishonest player. This extends known impossibility results to all non-trivial primitives. We provide a framework for quantifying this leakage and argue that leakage is a good measure for the privacy provided to the players by a given protocol. Our framework also covers the case where the two players are helped by a trusted third party. We show that despite the help of a trusted third party, the players cannot amplify the cryptographic power of any primitive. All our results hold even against quantum honest-but-curious adversaries who honestly follow the protocol but purify their actions and apply a different measurement at the end of the protocol. As concrete examples, we establish lower bounds on the leakage of standard universal two-party primitives such as oblivious transfer.
description: 38 pages, completely supersedes arXiv:0902.4036
Additional file 1 of Validation of the parents’ version of the KINDLR and Kiddy Parents questionnaire in a South African context
Creators: name: Deacon, Elmari
name: Jansen van Vuren, Esmé
name: Bothma, Elizabeth
name: Volschenk, Chanelle
name: Kruger, Ruan
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: Supplementary Material 1
Sparse Equidistribution of Unipotent Orbits in Finite-Volume Quotients of $\text{PSL}(2,\mathbb R)$, with appendices
Creators: name: Zheng, Cheng
Publisher: name: arXiv
Year: 2015
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 22E40, 37A17, 11F

description: In this note, we consider the orbits $\{pu(n^{1+γ})|n\in\mathbb N\}$ in $Γ\backslash\text{PSL}(2,\mathbb R)$, where $Γ$ is a non-uniform lattice in $\text{PSL}(2,\mathbb R)$ and $u(t)$ is the standard unipotent group in $\text{PSL}(2,\mathbb R)$. Under a Diophantine condition on the intial point $p$, we can prove that $\{pu(n^{1+γ})|n\in\mathbb N\}$ is equidistributed in $Γ\backslash\text{PSL}(2,\mathbb R)$ for small $γ>0$, which generalizes a result of Venkatesh (Ann.of Math. 2010). We will compute Hausdorff dimensions of subsets of non-Diophantine points in Appendix A, using results of lattice counting problem. In Appendix B we will use a technique of Venkatesh (Ann.of Math. 2010) and an exponential mixing property to prove a weak version of a result of Strömbergsson (J Mod Dynam, 2013), which is about the effective equidistribution of horospherical orbits.
description: 33 pages. The main part of the paper (without appendices) will appear in Journal of Modern Dynamics
Criação de um chatbot para o ARCA - Repositório Institucional da Fiocruz
Creators: name: Costa, Valéria Machado da
name: Queiroz, Claudete Fernandes de
name: Guimarães, João Pedro Borges da Rocha
name: Vale, Clara Gomberg Faulhaber do
name: Mamede, Paloma C.
name: Alves, Aline da Silva
name: Pereira, Catarina Barreto Malheiro
name: Militão, Tatiane
Publisher: name: Zenodo
Year: 2022

description: Apresentação realizada na sessão O meu Póster em 40 segundos da 13ª Conferência Lusófona de Ciência Aberta, formato híbrido, de 10 a 12 de outubro de 2022.
Direction for the Future - Successive Acceleration of Positive and Negative Ions Applied to Space Propulsion
Creators: name: Aanesland, A.
name: Bredin, J.
name: Popelier, L.
name: Chabert, P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Electrical space thrusters show important advantages for applications in outer space compared to chemical thrusters, as they allow a longer mission lifetime with lower weight and propellant consumption. Mature technologies on the market today accelerate positive ions to generate thrust. The ion beam is neutralized by electrons downstream, and this need for an additional neutralization system has some drawbacks related to stability, lifetime and total weight and power consumption. Many new concepts, to get rid of the neutralizer, have been proposed, and the PEGASES ion-ion thruster is one of them. This new thruster concept aims at accelerating both positive and negative ions to generate thrust, such that additional neutralization is redundant. This chapter gives an overview of the concept of electric propulsion and the state of the development of this new ion-ion thruster.
description: 10 pages, contribution to the CAS-CERN Accelerator School: Ion Sources, Senec, Slovakia, 29 May - 8 June 2012, edited by R. Bailey. appears in CERN Yellow Report CERN-2013-007, pp.575-584
Looking beyond the leaves and understanding the roots: sustainability assessment and monitoring of planted forests for biomass production in Brazil
Creators: name: De Moraes Czinar, Manuela
Publisher: name: Imperial College London
Year: 2019

description: Whereas most of the recent literature is concerned about the output legitimacy of planted forests, this thesis focus on the input legitimacy. The novel framework proposed in this thesis uses association membership and technical support as indicators of the sustainable expansion of planted forests from the lens of input legitimacy. This framework was based on the results of the grounded theory method applied to semi-structured interviews carried out with stakeholders in Brazil. Quantitative data were collected through a questionnaire applied to farmers in the country, as well as retrieved from the Census of Agriculture. The results of statistical analysis indicate that the farmers with the lowest income are those that tend to live on the farm, to be members of associations but to be less likely to receive technical support. By fitting logistic regressions, it was possible to show that income and education are the most important independent variables to explain technical support. Income and education levels can be assessed alternatively through the location of residence and association membership, given that both characteristics are related to technical support. Regional analysis using municipal data for the States of Minas Gerais and Mato Grosso do Sul showed where in these State such relationships are stronger. The most important reason why these indicators should be monitored closely is that there is a clear association between receiving technical support and being audited or certified. Nevertheless, this thesis identified a mismatch between association membership and technical support, which could be seen as an opportunity for associations to increase their technical support offer in a way to overcome the challenges posed by the recent changes in the financing of associations.
Additional file 2 of Validation of the parents’ version of the KINDLR and Kiddy Parents questionnaire in a South African context
Creators: name: Deacon, Elmari
name: Jansen van Vuren, Esmé
name: Bothma, Elizabeth
name: Volschenk, Chanelle
name: Kruger, Ruan
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: Supplementary Material 2
Numerical study of superradiant instability for charged stringy black hole-mirror system
Creators: name: Li, Ran
name: Zhao, Junkun
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We numerically study the superradiant instability of charged massless scalar field in the background of charged stringy black hole with mirror-like boundary condition. We compare the numerical result with the previous analytical result and show the dependencies of this instability upon various parameters of black hole charge $Q$, scalar field charge $q$, and mirror radius $r_m$. Especially, we have observed that imaginary part of BQN frequencies grows with the scalar field charge $q$ rapidly.
description: 5 pages, 5 figures, accepted by PLB. arXiv admin note: text overlap with arXiv:1403.7279
Site-selective particle deposition in periodically driven quantum lattices
Creators: name: Wulf, Thomas
name: Liebchen, Benno
name: Schmelcher, Peter
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We demonstrate that a site-dependent driving of a periodic potential allows for the controlled manipulation of a quantum particle on length scales of the lattice spacing. Specifically we observe for distinct driving frequencies a near depletion of certain sites which is explained by a resonant mixing of the involved Floquet-Bloch modes occurring at these frequencies. Our results could be exploited as a scheme for a site-selective loading of e.g. ultracold atoms into an optical lattices.
Finite size effects on liquid-solid phase coexistence and the estimation of crystal nucleation barriers
Creators: name: Statt, Antonia
name: Virnau, Peter
name: Binder, Kurt
Publisher: name: arXiv
Year: 2015
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A fluid in equilibrium in a finite volume $V$ with particle number $N$ at a density $ρ= N/V$ exceeding the onset density $ρ_f $ of freezing may exhibit phase coexistence between a crystalline nucleus and surrounding fluid. Using a method suitable for the estimation of the chemical potential of dense fluids we obtain the excess free energy due to the surface of the crystalline nucleus. There is neither a need to precisely locate the interface nor to compute the (anisotropic) interfacial tension. As a test case, a soft version of the Asakura-Oosawa model for colloid polymer-mixtures is treated. While our analysis is appropriate for crystal nuclei of arbitrary shape, we find the nucleation barrier to be compatible with a spherical shape, and consistent with classical nucleation theory.
description: printed in Physical Review Letters,2015
Orphans in Forests of Linear Fractional Transformations
Creators: name: Han, Sandie
name: Masuda, Ariane M.
name: Singh, Satyanand
name: Thiel, Johann
Publisher: name: arXiv
Year: 2015
Subjects: subject: Number Theory (math.NT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 11A99, 11B75, 05C05

description: This paper studies the set of orphans in certain Calkin-Wilf trees generated by linear fractional transformations.
description: Expanded section on PLFTs, includes several new proofs and results. This version represents a significant reorganization over the previous version
New Lower Bounds for 28 Classical Ramsey Numbers
Creators: name: Exoo, Geoffrey
name: Tatarevic, Milos
Publisher: name: arXiv
Year: 2015
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C55, 05D10

description: We establish new lower bounds for $28$ classical two and three color Ramsey numbers, and describe the heuristic search procedures we used. Several of the new three color bounds are derived from the two color constructions; specifically, we were able to use $(5,k)$-colorings to obtain new $(3,3,k)$-colorings, and $(7,k)$-colorings to obtain new $(3,4,k)$-colorings. Some of the other new constructions in the paper are derived from two well-known colorings: the Paley coloring of $K_{101}$ and the cubic coloring of $K_{127}$.
An Analysis of Regional Interindustry Effect of Ground Water in Jeju Island
Creators: name: Sung, Myunghwan
name: Sung, Myunghwan
Publisher: name: Unknown
Year: 2011
Subjects: subject: Resource /Energy Economics and Policy
subject: regional interindustry analysis
subject: intra-regional input-output table
subject: inter-regional input-output table

description: Climate change, shortage of water and environment pollution have become a big issue all over the world. In the case of Jeju Island, it is completely dependent on subterranean water for not only drinking water but also public water, industrial water and agricultural water because of its hydrogeological condition unlike the inland. The primary objective of this study is to analyze the correlations of the ground water with the local economy and industry and to evaluate the economical value of the ground water in Jeju Island. The effect of the water industry was analyzed in a scenario using the regional input-output table. It is forecasted that the economic value of the ground water of Jeju Island will be escalated, and thus it is necessary to extend the range of the ground water-based industry to high value-creating businesses connected to tourism and the service industry. A comprehensive countermeasure needs to be devised to create economic value and evaluate the quality of life of Jeju residents.
Optical diode based on the chirality of guided photons
Creators: name: Sayrin, C.
name: Junge, C.
name: Mitsch, R.
name: Albrecht, B.
name: O'Shea, D.
name: Schneeweiss, P.
name: Volz, J.
name: Rauschenbeutel, A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optics (physics.optics)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Photons are nonchiral particles: their handedness can be both left and right. However, when light is transversely confined, it can locally exhibit a transverse spin whose orientation is fixed by the propagation direction of the photons. Confined photons thus have chiral character. Here, we employ this to demonstrate nonreciprocal transmission of light at the single-photon level through a silica nanofibre in two experimental schemes. We either use an ensemble of spin-polarised atoms that is weakly coupled to the nanofibre-guided mode or a single spin-polarised atom strongly coupled to the nanofibre via a whispering-gallery-mode resonator. We simultaneously achieve high optical isolation and high forward transmission. Both are controlled by the internal atomic state. The resulting optical diode is the first example of a new class of nonreciprocal nanophotonic devices which exploit the chirality of confined photons and which are, in principle, suitable for quantum information processing and future quantum optical networks.
Additional file 1 of The association between joint Serum Neurofilament Light Chain and type 2 diabetes with all-cause and cardiovascular mortality in US adults: a longitudinal study of NHANES
Creators: name: Wang, Cuihua
name: Wang, Shuguang
name: Wang, Ying
Publisher: name: figshare
Year: 2024
Subjects: Medicine
Biological Sciences not elsewhere classified
Developmental Biology
Science Policy

description: Supplementary Material 1
Supplemantary Material from The wisdom of stalemates: consensus and clustering as filtering mechanisms for improving collective accuracy
Creators: name: Winklmayr, Claudia
name: Kao, Albert B.
name: Bak-Coleman, Joseph B.
name: Romanczuk, Pawel
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: 60102 Bioinformatics
subject: FOS: Computer and information sciences
subject: 60801 Animal Behaviour
subject: 10202 Biological Mathematics
subject: FOS: Mathematics

description: Additional results regarding stalemate filtering in other types of graphs and comparison with other optimal voting strategies.
Role of Magnetic Field in Self-Oscillation of Nanomagnet Excited by Spin Torque
Creators: name: Taniguchi, Tomohiro
name: Tamaru, Shingo
name: Arai, Hiroko
name: Tsunegi, Sumito
name: Kubota, Hitoshi
name: Imamura, Hiroshi
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The critical current of the self-oscillation of spin torque oscillator (STO) consisting of a perpendicularly magnetized free layer and an in-plane magnetized pinned layer was studied by solving the Landau-Lifshitz-Gilbert (LLG) equation. We found that the critical current diverged at certain field directions, indicating that the self-oscillation does not occur at these directions. It was also found that the sign of the critical current changed depending on the applied field direction.
description: 4 pages, 3 figures, conference proceeding of Intermag 2014
Métodos para aprimorar as propriedades pseudo-aleatórias de mapas caóticos
Creators: name: Alvarenga, João Pedro Do Valle
name: Machicao, Jeaneth
name: Bruno, Odemir Martinez
Publisher: name: Zenodo
Year: 2020
Subjects: chaos theory
cryptography
logistic map
PRNG
deep-zoom

description: Resumo também pode ser encontrado no caderno de resumos (página 58) A teoria do caos tem impactado diversas áreas do conhecimento, dentre elas está a criptografia. No qual a base das criptografias modernas são dependentes de bons geradores de números pseudo-aleatórios (PRNGs, da sigla em inglês), visto que são capazes de gerar números aparentemente aleatórios de forma determinística, o que é essencial nos algoritmos criptográficos. Visando o uso de mapas caóticos como PRNGs, utilizou de métodos de capazes de transformar as órbitas destes mapas em sequências de números mais próximos das características aleatória. Para isso, aplicou-se métodos encontrados na literatura, como o deep-zoom (1) e skipping (2), e propôs novos métodos, tais como a variação do skipping, o skipping caótico, o método de rotação e o método de composição de mapas caóticos, em que todos os métodos foram aplicados nos mapa de tenda e mapa logístico. Para classificação dos métodos, utilizou de baterias de testes estatísticos, como NIST e DIEHARD, no qual os métodos deep-zoom e de rotação apresentaram excelentes resultados em ambos os teste (NIST e DIEHARD). Em especial, para o caso da composição do mapa logístico e mapa de tenda apresentou um elevado expoente de Lyapunov para uma variedade de parâmetros de controle do que os mapas isolados. Portanto, o uso dos métodos em mapas caóticos geram PRNGs capazes de impactar a criptografia. Referências: 1 MACHICAO, J.; BRUNO, O. M. Improving the pseudo-randomness properties ofchaotic maps using deep-zoom. Chaos :an interdisciplinary journal of nonlinear science,v.27,n.5,p.053116, 2017. 2 DE MICCO, L.; LARRONDO, H.A.;GONZALES,L.M.;MARTIN,M.T.;PLASTINO, A.;ROSSO, O.A. Randomizing nonlinear maps via symbolic dynamics. Physica A , v.387,n.14,p.3373-3383,2008.
description: Presented by João Pedro do Valle Alvarenga during X Semana Integrada de Graduação e Pós-Graduação do Instituto de Física de São Carlos (SIFSC)
Time Function: Possibility And Certainty Measurements
Creators: name: KOLAWOLE Ishmael
Publisher: name: Zenodo
Year: 2022
Subjects: Time, Relativity, Certainty

description: In relation to the inner self, the past is the echoing sequence of present actions: the sporadic echo of varying frequencies of resonantly constant present whereas the present is unchanging and source of both the past and the future.
 On the other hand, the future is the interval between the seeming end of physical form and the duration of its reverberation and the degree of impact of this reverberation.
Spin-fluctuation mechanism of anomalous temperature dependence of magnetocrystalline anisotropy in itinerant magnets
Creators: name: Zhuravlev, Ivan A.
name: Antropov, Vladimir P.
name: Belashchenko, Kirill D.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The origins of the anomalous temperature dependence of magnetocrystalline anisotropy in (Fe$_{1-x}$Co$_{x}$)$_{2}$B alloys are elucidated using first-principles calculations within the disordered local moment model. Excellent agreement with experimental data is obtained. The anomalies are associated with the changes in band occupations due to Stoner-like band shifts and with the selective suppression of spin-orbit "hot spots" by thermal spin fluctuations. Under certain conditions, the anisotropy can increase, rather than decrease, with decreasing magnetization due to these peculiar electronic mechanisms, which contrast starkly with those assumed in existing models.
description: 9 pages, 10 figures (including supplemental material)
Phases of holographic superconductors with broken translational symmetry
Creators: name: Baggioli, Matteo
name: Goykhman, Mikhail
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We consider holographic superconductors in a broad class of massive gravity backgrounds. These theories provide a holographic description of a superconductor with broken translational symmetry. Such models exhibit a rich phase structure: depending on the values of the temperature and the disorder strength the boundary system can be in superconducting, normal metallic or normal pseudoinsulating phases. Furthermore the system supports interesting collective excitation of the charge carriers, which appears in the normal phase, persists in the superconducting phase, but eventually gets destroyed by the superconducting condensate. We also show the possibility of building a phase diagram of a system with the superconducting phase occupying a dome-shaped region on the temperature-disorder plane.
description: Minor revisions, interpretation clarified, version published in JHEP
Time Function: Possibility And Certainty Measurements
Creators: name: KOLAWOLE Ishmael
Publisher: name: Zenodo
Year: 2022
Subjects: Time, Relativity, Certainty

description: Energy is potential with infinitely exponential frequency of seeming nothingness and stillness which diffracts through recursive time oscillation and which refracted spectra are sequenced, modulated and patterned between varying intervals of time oscillations. Thus making time (Omning) the instant of perception and the destructive instant of reverberated perception.
Partially quenched chiral perturbation theory for N=1 supersymmetric Yang-Mills theory
Creators: name: Münster, Gernot
name: Stüwe, Hendrik
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Adding a gluino mass term to N=1 supersymmetric Yang-Mills theory breaks supersymmetry softly. In order to approach the supersymmetric continuum limit in numerical simulations with the Wilson action, the bare gluino mass has to be tuned to the limit of vanishing renormalised gluino mass. This can be done efficiently by means of the mass of the adjoint pion, which is, however, an unphysical particle. We discuss how the adjoint pion can be defined in the framework of partially quenched chiral perturbation theory. A relation between its mass and the mass of the gluino, analogous to the Gell-Mann-Oakes-Renner relation of QCD, can be derived.
description: 7 pages, 2 figures, contribution to the 32nd International Symposium on Lattice Field Theory (Lattice 2014), 23-28 June 2014, Columbia University, New York, NY, USA
Supplementary document for Automatic detection of face mask wearing based on polarization imaging - 6996732.pdf
Creators: name: Li, Bosong
name: Li, Yahong
name: Li, Kexian
name: Fu, Yuegang
name: Ouyang, Mingzhao
name: Jia, Wentao
Publisher: name: Optica Publishing Group
Year: 2024
Subjects: Optical Physics not elsewhere classified

description: DOLP images employed a bilateral filtering (BF) algorithm for denoising