cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
D.2.2 RES/storage enabled infrastructure planning
Creators: name: Jelić, Marko
name: Tomašević, Nikola
name: Millet Biosca, Lluis
name: Übermasser, Stefan
name: Fabres, Jesus
Publisher: name: Zenodo
Year: 2020

description: Executive Summary Building upon the results of previously published studies within the scope of the REACT project and leaning mainly on Deliverable 1.1 Pilot technical characterisation and regulatory framework and Deliverable 2.1 Assessment of RES potential at pilot sites, this report aims to take into account as many legislative, economic and technical limitation into account as possible and, powered by novel modelling solutions, provide simulations that would facilitate long-term multi-criteria sizing analysis that are to follow in the following tasks of the project. This deliverable first provides a brief summary of techniques that are used in system modelling (game theory, linear optimization, etc.) and a rundown of some of the most popular available software solutions for these simulations. The very process of simulation, presented after the initial state of the art review, is conducted and aided with relevant parameters with the main goal of monitoring the performance of the energy transmission and dispatching of various power systems with the main goal of achieving self-sustainability and economic viability, but also tracking the impact that high renewable penetration might have on the stability and limitations of the existing power transmission system. With each considered island being a specific use case and their parameters varying significantly, this report takes into account differences in climate through distinctive renewable generation profiles but also legislative constraints and respective pricing schemas for each island independently. In this way, the report yields case-specific results tailored for each island individually through the appropriate modifications of general-purpose build simulation software. Simulations and analysis are provided for three different types of scenarios: High-level planning case studies for demo islands and follower islands (long-term analysis for whole geographical islands) and Demo site planning studies where a smaller subset of houses and buildings from demo islands are used as a representative example of the entire island and are analysed with hypothetical configurations with renewable technologies and storage in long-term simulations. These demo site simulations provide a basis for the equipment deployment phase of the project that is to come later on in which predefined renewable generation and storage capacities will be installed on demo islands and used in conjunction with optimization and advanced load control mechanisms in order to provide a replicable basis for self- sustainability.
The Linear Bound for Haar Multiplier Paraproducts
Creators: name: Bickel, Kelly
name: Sawyer, Eric T.
name: Wick, Brett D.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics

description: We study the natural resolution of the conjugated Haar multiplier $M_{w^{\frac{1}{2}}}T_σM_{w^{-\frac{1}{2}}},$ where the multiplication operators $M_{w^{\pm\frac{1}{2}}}$ are decomposed into their canonical paraproduct decompositions. We prove that each constituent operator obtained from this resolution has a linear bound on $L^2(\mathbb{R}^d;w)$ in terms of the $A_{2}$ characteristic of $w$. The main tools used are a product formula for Haar coefficients, the Carleson Embedding Theorem, the linear bound for the square function, and the well-known linear bound of $T_σ$ on $L^2(\mathbb{R}^d,w).$
description: 18 pages. New version incorporates several changes suggested by the referee
Dimensional Data KNN-Based Imputation
Creators: name: Yang, Yuzhao
name: Darmont, Jérôme
name: Ravat, Franck
name: Teste, Olivier
Publisher: name: arXiv
Year: 2022
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: Data Warehouses (DWs) are core components of Business Intelligence (BI). Missing data in DWs have a great impact on data analyses. Therefore, missing data need to be completed. Unlike other existing data imputation methods mainly adapted for facts, we propose a new imputation method for dimensions. This method contains two steps: 1) a hierarchical imputation and 2) a k-nearest neighbors (KNN) based imputation. Our solution has the advantage of taking into account the DW structure and dependency constraints. Experimental assessments validate our method in terms of effectiveness and efficiency.
Collapse-revival of quantum discord and entanglement
Creators: name: Yan, Xue-Qun
name: Zhang, Bo-Ying
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper the correlations dynamics of two atoms in the case of a micromaser-type system is investigated. Our results predict certain quasi-periodic collapse and revival phenomena for quantum discord and entanglement when the field is in Fock state and the two atoms are initially in maximally mixed state, which is a unique separable state. Our calculations also show that the oscillations of the time evolution of both quantum discord and entanglement are almost in phase and they both have similar evolution behavior in some time range. The fact reveals the consistency of quantum discord and entanglement in some dynamical aspects.
description: 1. Some references are added. 2.Some misprints are corrected. For example, in Eq.(2) the expression "C" and "S" are changed to lowercase
Phase diagram and order-disorder transitions in Y$_{0.9}$Gd$_{0.1}$Fe$_{2}$H$_{x}$ hydrides (x $\le$ 2.9)
Creators: name: Paul-Boncour, V.
name: Provost, K.
name: Alleno, E.
name: Diaye, A. N
name: Couturas, F.
name: Elkaim, E.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Y$_{0.9}$Gd$_{0.1}$Fe$_{2}$, which crystallizes in a C15 cubic structure, can absorb up to 5 H/f.u. and its pressure-composition isotherm displays a multiplateau behavior related to the existence of several hydrides with different crystal structures. At room temperature Y$_{0.9}$Gd$_{0.1}$Fe$_{2}$H$_{x}$ hydrides (2.9 $\le$ x $\le$ 5) crystallize in three phases with cubic structure (C1, C2 and C3), two phases with monoclinic structures (M1 and M2), and one phase with orthorhombic structure (O), with the following sequence for increasing H concentration: C1, M1, C2, M2, C3, O. Each phase exists as single phase within a H homogeneity range, and they are separated from each other by two-phase domains. The reductions of crystal symmetry are related to various hydrogen orders into interstitial sites. Weak superstructure peaks were indexed by doubling the cubic cell parameter of the cubic C2 phase. Upon heating, the monoclinic M1 and M2 and the cubic C2 phases undergo order-disorder (O-D) transitions toward a disordered cubic structure CDis. These O-D transitions are reversible with thermal hysteresis effects. The cubic C3 and orthorhombic O phases transform into a disordered cubic phase accompanied by H desorption.
description: 16 pages, 8 figures, 2 tables
title: Extending Agile and DevSecOps to Improve Efforts Tangential to Software Product Development
Creators: name: Hughes, Lyndsi
name: Sweeney, David
Publisher: name: Software Engineering Institute, Carnegie Mellon University
Year: 2023

description: The modern software engineering practices of Agile and DevSecOps have revolutionized the practice of software engineering. These strategies have provided a foundation for producing working software products faster and more reliably than ever before. However, we found that most literature about Agile and DevSecOps focuses on the product and ignores the business mission and capability-delivery aspects of every software product under development. In this blog post from the Carnegie Mellon University Software Engineering Institute, Lyndsi Hughes and David Sweeney share their experiences leveraging DevSecOps pipelines in support of teams focused on the capability delivery and business mission for their organizations. The post also provides two examples from the field of atypical applications of Agile and DevSecOps.
Sense of Humour andWork Culture: A study based in the luxury hotels in Bangalore, India
Creators: name: Mathew, Jain
name: John, Jacob
name: Nair, Sridevi
Publisher: name: Journal of Tourism & Development
Year: 2020

description: Employee well-being has been a focus area for Human Resource managers as well as top management alike. The belief that healthy, happy employees would be more effcient, and consequently contribute more, has verily driven the research to understand the implications of different aspects of an employee's health and happiness. Based on the work of key humour researcher Dr. Paul McGhee, it has been established that humour does play a key role in ensuring a happy and healthy workforce. The current study attempts to evaluate the benefits of the use of humour at the workplace, primarily in terms of influencing the work culture. The data for the study has been collected from the hotel sector and has been analysed to understand the use of humour and its influence on the work culture. The findings suggest that the presence and use of humour has a strong positive impact on work culture. The researchers also found that, contrary to previous literature, the use of humour did not depend on demographic variables like age, tenure in the current organization or total work experience. Furthermore, the study also attempts to understand how the use of humour would impact the work culture. In this regard, the researchers found that certain dimensions of humour at the workplace, had a stronger impact on the culture and it is expected that the findings would guide the behaviour of leaders and managers in the creation of a mutually beneficial workplace.
description: Journal of Tourism & Development, n.º 34 (2020)
Call of the freaks, Luis Russell & Louis Armstrong, musical pals
Creators: name: Kahn, Paul N.
Publisher: name: No Publisher Supplied
Year: 2018

description: Luis Russell was a pioneering pianist, orchestra leader, arranger, and composer, and a seminal figure in the creation of both jazz and swing. Russell became a pivotal player in a succession of musical milieus; from cabarets and casinos in Colon, Panama, to early 1920’s New Orleans small groups, to large black Orchestras and middle size recording ensembles in mid 1920’s Chicago, to leading his own Orchestra in late 1920’s New York City, to moving the New Orleans polyphonic style forward into propulsive swing arrangements with his Orchestras of 1928-1935, to directing one of the most successful Big Bands of the Swing Era, billed as Louis Armstrong and His Orchestra, which was Louis Armstrong fronting The Luis Russell Orchestra, from 1935 into the 1940s, to having his leadership stripped and becoming merely the piano player with Louis Armstrong and His Orchestra as it embraced muscular Swing charts under the direction of Joe Garland from 1940-1943, to creating a new Luis Russell Orchestra for the era of jump blues, Rhythm n’ Blues, Bebop, and crooning vocalists, from 1944-1950.Luis Russell might be the most important figure in the history of jazz, that you’ve perhaps never heard of. He may lay claim to an odd achievement; gaining great visibility during the three decades he was musically active (the 1920’s through the 1940’s), while being reduced to invisibility today. Until now, there has never been a full length biographical treatment of Luis Russell. With an extensive family archive at my disposal, Luis Russell’s story will be told from an insider’s perspective, attempting to demystify and debunk some of what’s already been written. At the heart of the story are Luis Russell’s collaborations and friendship with his musical pal, Louis Armstrong. Their collaborations are among the foremost pinnacles of Louis Armstrong’s career.
The Local Dark Matter Density
Creators: name: Read, J. I.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: I review current efforts to measure the mean density of dark matter near the Sun. This encodes valuable dynamical information about our Galaxy and is also of great importance for 'direct detection' dark matter experiments. I discuss theoretical expectations in our current cosmology; the theory behind mass modelling of the Galaxy; and I show how combining local and global measures probes the shape of the Milky Way dark matter halo and the possible presence of a 'dark disc'. I stress the strengths and weaknesses of different methodologies and highlight the continuing need for detailed tests on mock data - particularly in the light of recently discovered evidence for disequilibria in the Milky Way disc. I highlight several recent measurements in order of increasing data complexity and prior, and, correspondingly, decreasing formal error bars. Comparing these measurements with spherical extrapolations from the Milky Way's rotation curve, I show that the Milky Way is consistent with having a spherical dark matter halo at the Solar position R0. The very latest measures based on ~10,000 stars from the Sloan Digital Sky Survey appear to favour little halo flattening at R0, suggesting that the Galaxy has a rather weak dark matter disc, with a correspondingly quiescent merger history [Abridged].
description: 62 pages, 11 Figures. Replaced with final version published in Journal of Physics G. A high resolution version is available here: http://personal.ph.surrey.ac.uk/~jr0018/Papers/localdm_review.pdf
Contributo dos Caminhos de Santiago para o desenvolvimento sustentável do Turismo, em Barcelos
Creators: name: Gonçalves, Francisco Joaquim Barbosa
name: Costa, Carlos
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2020

description: Este artigo visa analisar o contributo do Caminho de Santiago para o desenvolvimento sustentável do turismo criativo, em Barcelos, um território que se assume como a capital do artesanato nacional e integra a rede mundial de Cidades Criativas da UNESCO, na categoria do Artesanato e Arte Popular. Argumenta-se que os Caminhos de Santiago contribuem para o desenvolvimento sustentável da indústria turística, designadamente o aumento da oferta hoteleira e de outras atividades turísticas, no território do Galo de Barcelos. A metodologia de investigação científica passa por métodos qualitativos e quantitativos, designadamente inquéritos por questionário aos visitantes e empresários da indústria turística local, para além de uma revisão da literatura e uma análise a documentos relevantes para este estudo. Os resultados deste estudo permitem concluir que o Caminho de Santiago emerge como a principal motivação para visitar Barcelos, seguido pelo património histórico e cultural e pelo Galo de Barcelos. Argumenta-se que a Câmara Municipal de Barcelos (CMB) deveria reconsiderar o seu plano de marketing turístico e a agenda de atividades culturais para potenciar em termos turísticos o facto de integrar a rede mundial de Cidades Criativas da UNESCO.
description: Revista Turismo & Desenvolvimento, n.º 34 (2020)
Unsteady Flow Toward Partially Penetrating Artesian Wells
Creators: name: Huang, Y. H.
Publisher: name: Kentucky Water Resources Research Institute, University of Kentucky
Year: 1971

description: Abstract:
A numerical method programmed for a high-speed computer was developed for determining the drawdown around an artesian well. A salient feature of the program is that it can be used for both fully and partially penetrating wells in either infinite or finite aquifers. The method Involves the application of finite difference equations to the well-known heat equation using a graded network. A comparison of the finite difference solutions with those obtained from the close-form formulas of Muskat, Theis, and Hantush indicates the validity of the method. A comparison between the finite difference solutions and the drawdowns measured on a sand model, consisting of a circular aquifer 8 feet In diameter and 4 feet thick with a well at the center, shows that the drawdowns In the well are in fairly good agreement, although some discrepancy exists at points outside the well. The discrepancy is believed due to the time lag caused by the use of small tubes as piezometers. If a correction for the time lag is made, the agreement between numerical solutions and experimental measurements is considered satisfactory within the range of experimental errors.
Funding information: The work upon which this report is based was supported in part by funds provided by the United States Department of the Interior, Office of Water Resources Research, as authorized under the Water Resources Research Act of 1964.
Online control of the gain drift with temperature of SiPM arrays used for the readout of LaB$_3$:Ce crystals
Creators: name: Bonesini, M.
name: Bertoni, R.
name: Prata, M.
name: Rossella, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: LaB$_3$:Ce crystals have been introduced for radiation imaging in medical physics, with photomultiplier or single SiPM readout. An R-D was pursued with 1/2" and 1" LaBr3:Ce crystals, from different producers, to realize compact large area detectors (up to some cm$^2$ area) with SiPM array readout, aiming at high light yields, good energy resolution, good detector linearity and fast time response for low-energy X-rays. A natural application was found inside the FAMU project at RIKEN-RAL muon facility, that aims at a precise measure of the proton Zemach radius to solve the so-called "proton radius puzzle", triggered by the recent measure of the proton charge radius at PSI. The goal is the detection of characteristic X-rays around 130 keV. Other applications may be foreseen in medical physics, such as PET, and gamma-ray astronomy. A limiting factor is the gain drift of SiPM arrays with temperature, that give a deterioration of the detector's FWHM energy resolution. To solve this problem, a custom NIM module, based on CAEN A7585 digital power supply, was developed. Test results of the correction of gain drift with temperature for SiPM arrays from Advansid, Sensl, Hamamatsu will be presented. At the $^{137}$Cs peak, an energy resolution better than 3% was obtained for a typical LaBr$_3$:Ce crystal, using Hamamatsu S13461 arrays. This compares well with best available results obtained with PMTs.
Value creation in the Cultural Routes of the European Council through the design of military tourism products
Creators: name: Moreno-Lobato, Ana
name: Costa, Carlos
name: Hernández-Mogollón, José Manuel
Publisher: name: Journal of Tourism & Development
Year: 2020

description: The Cultural Routes of the Council of Europe (C.R.C.E.) certify itineraries with relevance for their quality and distinction when managing and recovering the cultural heritage of the different destinations. One of the main purposes of these routes is to achieve sustainable tourism by the use of cultural tourism, which involves society as a whole and attributes value to the European historical heritage. Military tourism is a typology of tourism that meets all the criteria that the Council of Europe seeks in these routes. Many of them boost a strong historical base which may help the design of innovative proposals, in line with the current requirements of travellers, increasingly interested in having meaningful experiences during their holiday time. The main objective of this research is to implement military tourism products as innovative and sustainable tools for the development of certified destinations joined in the C.R.C.E. This research carried out a review of secondary data sources of military tourism as a development tool in different destinations. The results show that some military tourism actions can provide innovation to the local tourism systems. Military tourism is confirmed as an expression of tourism, capable of offering quality products to enrich the tourism supply of the destinations that have interesting tourism resources. Museums and cultural events as re-enactments add value to C.R.C.E. management network.
description: Journal of Tourism & Development, n.º 34 (2020)
From Intelligent Agents to Trustworthy Human-Centred Multiagent Systems
Creators: name: Soorati, Mohammad Divband
name: Gerding, Enrico H.
name: Marchioni, Enrico
name: Naumov, Pavel
name: Norman, Timothy J.
name: Ramchurn, Sarvapali D.
name: Rastegari, Bahar
name: Sobey, Adam
name: Stein, Sebastian
name: Tarpore, Danesh
name: Yazdanpanah, Vahid
name: Zhang, Jie
Publisher: name: arXiv
Year: 2022
Subjects: subject: Multiagent Systems (cs.MA)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: The Agents, Interaction and Complexity research group at the University of Southampton has a long track record of research in multiagent systems (MAS). We have made substantial scientific contributions across learning in MAS, game-theoretic techniques for coordinating agent systems, and formal methods for representation and reasoning. We highlight key results achieved by the group and elaborate on recent work and open research challenges in developing trustworthy autonomous systems and deploying human-centred AI systems that aim to support societal good.
description: Appears in the Special Issue on Multi-Agent Systems Research in the United Kingdom
The Image of Hostel Accommodation From the Tourist’s Perspective - An Analysis of Online Booking Platforms
Creators: name: Carreiro, Duarte
name: Paço, Arminda
name: Alves, Helena
Publisher: name: Journal of Tourism & Development
Year: 2020

description: The purpose of this study is to analyse the image created in tourists' minds, at times prior to the trip, and specifically, when choosing accommodation, with the source of information being the comments posted on online booking platforms. The Echtner and Ritchie model was used to analyze and treat a sample of 2210 comments, collected from three different booking platforms. To validate this research, a content analysis was performed using Echtner and Ritchie models which analyses an image from tourist destination by three dimensions. The comments were analyzed from the following dimensions of a tourist destination: holistic and individual attributes, functional and psychological characteristics, and the common or unique character of the destination's features. It was found that guests tend to perceive an image based on Functional/Attribute and Functional/Psychological attributes, which include facilities, meals and drinks, location, cleanliness and staff. This study utilizes original and authentic data, from tourists who spent time on lodging accommodations. The study is of practical relevance since it gives suggestions that should be used by hostel managers.
description: Journal of Tourism & Development, n.º 34 (2020)
Magnetic, structural and magnetocaloric properties of Y$_{0.9}$Gd$_{0.1}$Fe$_{2}$H$_{x}$ hydrides
Creators: name: Paul-Boncour, V.
name: Provost, K.
name: Mazet, T.
name: Diaye, A. N
name: Alleno, E.
name: Couturas, F.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: At 300 K, Y$_{0.9}$Gd$_{0.1}$Fe$_{2}$H$_{x}$ hydrides crystallize sequentially with increasing H concentration in various structures related to a lowering of the cubic MgCu$_{2}$ type structure of the parent alloy: cubic C1, monoclinic M1, cubic C2, monoclinic M2, cubic C3, orthorhombic O. Above 300 K, they undergo a first-order transition at a T$_{O-D}$ temperature driven by order-disorder of hydrogen atoms into interstitial sites. Their magnetic, structural and magnetocaloric properties have been investigated through magnetic measurements, and high-resolution synchrotron diffraction experiments. The magnetization at 5 K decreases slightly from 4 to 3.8 $μ_{B}$ for x = 3 to 3.9 H f.u., then with a larger slope for higher H content. A discontinuous decrease of the magnetic transition temperature is observed: M1 and C2 hydrides are ferrimagnetic with T$_{C}$ near 300 K, M2 hydride displays a sharp ferromagnetic-antiferromagnetic transition at T$_{FM-AFM}$ =144 K, whereas C3 and O hydrides present only a sharp increase of the magnetization below 15 K and a weak magnetization up to RT. Negative magnetic entropy variations ($Δ$S$_{M}$) are measured near T$_{C}$ for the M1 and C2 phases, near T$_{FM-AFM}$ for the M2 phase, whereas positive $Δ$S$_{M}$ peaks due to inverse MCE effect are found near T$_{O-D}$. A structural and magnetic phase diagram is proposed.
description: 8 pages (published), 7 figures, 46 references
Perceived value in adventure tourism - a study of trekkers in Himachal Pradesh with respect to satisfaction and future intentions!
Creators: name: Narvekar, Rajeev
name: Dayanand, M. S.
Publisher: name: Journal of Tourism & Development
Year: 2020

description: Growth in tourism has continued over successive years with tourists, now looking for a variety of experiences. Adventure tourism, a niche segment, is growing rapidly and yet to be exploited by many of the big economies in the world. This study was undertaken to understand the value sought after by the adventure tourists. The reason tourist seeks an Adventure, knowing it comes with an element of risk. Five hundred sixty-three trekkers in Himachal Pradesh, India, were the respondents sharing their perception of value. The Value was studied as a multidimensional construct with six dimensions of value. Time value was incorporated for the first time in Adventure study by the researcher. Except for Social value, the rest five viz. Functional value, Value for money, Emotional Value, Novelty Value, and Time value were significantly related to Satisfaction in Adventure tourism context. Functional, Time and Emotional value had the highest impact on satisfaction. Satisfaction mediated both the dependent variables viz., Intention, and Recommendation.
description: Journal of Tourism & Development, n.º 34 (2020)
Higgs-radion unification: radius stabilization by an SU(2) bulk doublet and the 126 GeV scalar
Creators: name: Geller, Michael
name: Bar-Shalom, Shaouly
name: Soni, Amarjit
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate a Randall-Sundrum model with an SU(2) doublet propagating in the bulk. Upon calculating its gravitational effect we find that a stabilized radius can be generated without the use of an additional scalar, as needed for example in the Goldberger-Wise (GW) mechanism, and with no additional fine-tuning other than the inescapable one due to the cosmological constant; similar tuning is also present in the GW mechanism. The lowest scalar excitation in this scenario, the counterpart of the radion of the GW mechanism, has both radion-like and Higgs-like couplings to the SM fields. It, thus, plays a dual role and we, therefore, denote it as the "Higgs-radion" ($h_r$). As opposed to the GW radion case, our Higgs-radion is found to be compatible with the 126 GeV scalar recently discovered at the LHC, at the level of $1σ$, with a resulting $95\%$ CL bound on the KK-gluon mass of: $4.48~TeV
description: latex, 23 pages, 2 figures, 2 tables. In V2: 2 figures and 1 table added, new references added and differences with previous works are further elaborated
Novel Radiomic Measurements of Tumor- Associated Vasculature Morphology on Clinical Imaging as a Biomarker of Treatment Response in Multiple Cancers
Creators: name: Braman, Nathaniel
name: Prasanna, Prateek
name: Bera, Kaustav
name: Alilou, Mehdi
name: Khorrami, Mohammadhadi
name: Leo, Patrick
name: Etesami, Maryam
name: Vulchi, Manasa
name: Turk, Paulette
name: Gupta, Amit
name: Jain, Prantesh
name: Fu, Pingfu
name: Pennell, Nathan
name: Velcheti, Vamsidhar
name: Abraham, Jame
name: Plecha, Donna
name: Madabhushi, Anant
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Tissues and Organs (q-bio.TO)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences

description: Purpose: Tumor-associated vasculature differs from healthy blood vessels by its chaotic architecture and twistedness, which promotes treatment resistance. Measurable differences in these attributes may help stratify patients by likely benefit of systemic therapy (e.g. chemotherapy). In this work, we present a new category of radiomic biomarkers called quantitative tumor-associated vasculature (QuanTAV) features, and demonstrate their ability to predict response and survival across multiple cancers, imaging modalities, and treatment regimens. Experimental Design: We segmented tumor vessels and computed mathematical measurements of twistedness and organization on routine pre-treatment radiology (CT or contrast-enhanced MRI) from 558 patients, who received one of four first-line chemotherapy-based therapeutic intervention strategies for breast (n=371) or non-small cell lung cancer (NSCLC, n=187). Results: Across 4 chemotherapy-based treatment strategies, classifiers of QuanTAV measurements significantly (p<.05) predicted response in held out testing cohorts alone (AUC=0.63-0.71) and increased AUC by 0.06-0.12 when added to models of significant clinical variables alone. QuanTAV risk scores were prognostic of recurrence free survival in treatment cohorts chemotherapy for breast cancer (p=0.002, HR=1.25, 95% CI 1.08-1.44, C-index=.66) and chemoradiation for NSCLC (p=0.039, HR=1.28, 95% CI 1.01-1.62, C-index=0.66). Categorical QuanTAV risk groups were independently prognostic among all treatment groups, including NSCLC patients receiving chemotherapy (p=0.034, HR=2.29, 95% CI 1.07-4.94, C-index=0.62). Conclusions: Across these domains, we observed an association of vascular morphology on radiology with treatment outcome. Our findings suggest the potential of tumor-associated vasculature shape and structure as a prognostic and predictive biomarker for multiple cancers and treatments.
description: This manuscript has been accepted for publication in Clinical Cancer Research, which is published by the American Association for Cancer Research
Flexible and Scalable Methods for Quantifying Stochastic Variability in the Era of Massive Time-Domain Astronomical Data Sets
Creators: name: Kelly, Brandon C.
name: Becker, Andrew C.
name: Sobolewska, Malgosia
name: Siemiginowska, Aneta
name: Uttley, Phil
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present the use of continuous-time autoregressive moving average (CARMA) models as a method for estimating the variability features of a light curve, and in particular its power spectral density (PSD). CARMA models fully account for irregular sampling and measurement errors, making them valuable for quantifying variability, forecasting and interpolating light curves, and for variability-based classification. We show that the PSD of a CARMA model can be expressed as a sum of Lorentzian functions, which makes them extremely flexible and able to model a broad range of PSDs. We present the likelihood function for light curves sampled from CARMA processes, placing them on a statistically rigorous foundation, and we present a Bayesian method to infer the probability distribution of the PSD given the measured lightcurve. Because calculation of the likelihood function scales linearly with the number of data points, CARMA modeling scales to current and future massive time-domain data sets. We conclude by applying our CARMA modeling approach to light curves for an X-ray binary, two AGN, a long-period variable star, and an RR-Lyrae star, in order to illustrate their use, applicability, and interpretation.
description: 18 pages, 16 figures, in press at ApJ. Revised to match accepted version. Code for utilizing the CARMA models is at https://github.com/bckelly80/carma_pack
Orbital Magnetism of Graphene Nanostructures: Bulk and Confinement Effects
Creators: name: Heße, Lisa
name: Richter, Klaus
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We consider the orbital magnetic properties of non-interacting charge carriers in graphene-based nanostructures in the low-energy regime. The magnetic response of such systems results both, frombulk contributions and from confinement effects that can be particularly strong in ballistic quantum dots. First we provide a comprehensive study of the magnetic susceptibility $χ$ of bulk graphene in a magnetic field for the different regimes arising from the relative magnitudes of the energy scales involved, i.e. temperature, Landau level spacing and chemical potential. We show that for finite temperature or chemical potential, $χ$ is not divergent although the diamagnetic contribution $χ_{0}$ from the filled valance band exhibits the well-known $-B^{-1/2}$ dependence. We further derive oscillatory modulations of $χ$, corresponding to de Haas-van Alphen oscillations of conventional two-dimensional electron gases. These oscillations can be large in graphene, thereby compensating the diamagnetic contribution $χ_{0}$ and yielding a net paramagnetic susceptibility for certain energy and magnetic field regimes. Second, we predict and analyze corresponding strong, confinement-induced susceptibility oscillations in graphene-based quantum dots with amplitudes distincly exceeding the corresponding bulk susceptibility. Within a semiclassical approach we derive generic expressions for orbital magnetism of graphene quantum dots with regular classical dynamics. Graphene-specific features can be traced back to pseudospin interference along the underlying periodic orbits. We demonstrate the quality of the semiclassical approximation by comparison with quantum mechanical results for two exemplary mesoscopic systems, a graphene disk with infinite mass-type edges and a rectangular graphene structure with armchair and zigzag edges, using numerical tight-binding calculations in the latter case.
description: 21 pages, 16 figures
Microwave synthesis of lithium cobalt oxide & iron-doped lithium cobalt oxide for oxygen evolution reaction
Creators: name: Li, Bowei
Publisher: name: No Publisher Supplied
Year: 2018

description: Oxygen evolution reaction (OER) plays a critical role in many advanced technologies for obtaining sustainable and clean energy, such as water splitting and CO2 reduction. However, current industry used precious metal-based OER catalysts (i.e. Ir, Ru) suffers from problems of low abundance and instability under high anodic potentials, which keeps these technologies far from large-scale applications. Recently, lithium cobalt oxide (LiCoO2) has been found as one of highly active and stable catalysts in OER, shows a potential to replace the precious metal. However, the most common used methods to synthesize LiCoO2 are based on traditional solid-state annealing, which has drawbacks in time/energy consuming and uncontrollable morphology. In this thesis, we developed a fast, simple, and cost-effective method to synthesize LiCoO2 taking advantage of the unique fast heating via microwave irradiation. Chapter 1 includes a brief overview on oxygen evolution reaction and OER catalysts. The microwave heating mechanism will also be introduced.In chapter 2, we designed a fast and pretreatment-free microwave-assisted method to synthesize LiCoO2 with small particle sizes. We found that the microwave process influences the crystal structures and the amount of Co3O4 impurities in the fabricated LiCoO2 particles. An optimal microwave irradiation process was established to eliminate all the Co3O4 impurities. The as-synthesized LiCoO2 with different structures as an electrochemical catalyst for oxygen evolution reaction in a water splitting setup to generate hydrogen was tested. The existence of Co3O4 impurities in the fabricated LiCoO2 particles negatively impacts on their OER performance. The LiCoO2 particles with minimal Co3O4 impurities exhibited a comparable performance with an overpotential of 430mV at 10mA/cm2 as those fabricated by previous reported approaches. In chapter 3, using the microwave irradiation method developed in chapter 2, we successfully doped Fe into the LiCoO2 frameworks. OER performance showed an obvious increase upon Fe doping. LiCoO2 with 20% Fe exhibited the best OER activity with an overpotential (η) of 370mV at 10mA/cm2, which deceased 60 mV compared to that of the undoped LiCoO2. Characterization of these Fe doped LiCoO2 via X-ray photoemission spectroscopy (XPS) demonstrated the electronic interaction between Fe and Co, which pushed the Co to a higher oxidation state of Co4+ from Co3+ in the undoped LiCoO2.
CASA on the fringe -- Development of VLBI processing capabilities for CASA
Creators: name: van Bemmel, Ilse M.
name: Kettenis, Mark
name: Small, Des
name: Janssen, Michael
name: Moellenbrock, George A.
name: Petry, Dirk
name: Goddi, Ciriaco
name: Linford, Justin D.
name: Rygl, Kazi L. J.
name: Liuzzo, Elisabetta
name: Marcote, Benito
name: Bayandina, Olga S.
name: Schweigart, Neal
name: Verkouter, Marjolein
name: Keimpema, Aard
name: Szomoru, Arpad
name: van Langevelde, Huib Jan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: New functionality to process Very Long Baseline Interferometry (VLBI) data has been implemented in the CASA package. This includes two new tasks to handle fringe fitting and VLBI-specific amplitude calibration steps. Existing tasks have been adjusted to handle VLBI visibility data and calibration meta-data properly. With these updates, it is now possible to process VLBI continuum and spectral line observations in CASA. This article describes the development and implementation, and presents an outline for the workflow when calibrating European VLBI Network or Very Long Baseline Array data in CASA. Though the CASA VLBI functionality has already been vetted extensively as part of the Event Horizon Telescope data processing, in this paper we compare results for the same dataset processed in CASA and AIPS. We find identical results for the two packages and conclude that CASA in some cases performs better, though it cannot match AIPS for single-core processing time. The new functionality in CASA allows for easy development of pipelines or Jupyter notebooks, and thus contributes to raising VLBI data processing to present day standards for accessibility, reproducibility, and reusability.
description: PASP in press, joint submission with the CASA reference paper; 12 pages, 5 figures
On the congruence subgroup problem for branch groups
Creators: name: Garrido, Alejandra
Publisher: name: arXiv
Year: 2014
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: We answer a question of Bartholdi, Siegenthaler and Zalesskii, showing that the congruence subgroup problem for branch groups is independent of the branch action on a tree. We prove that the congruence topology of a branch group is determined by the group; specifically, by its structure graph, an object first introduced by Wilson. We also give a more natural definition of this graph.
description: 9 pages, no figures; minor changes in accordance with referee report, exposition improved
CASA, the Common Astronomy Software Applications for Radio Astronomy
Creators: name: THE CASA TEAM
name: Bean, Ben
name: Bhatnagar, Sanjay
name: Castro, Sandra
name: Meyer, Jennifer Donovan
name: Emonts, Bjorn
name: Garcia, Enrique
name: Garwood, Robert
name: Golap, Kumar
name: Villalba, Justo Gonzalez
name: Harris, Pamela
name: Hayashi, Yohei
name: Hoskins, Josh
name: Hsieh, Mingyu
name: Jagannathan, Preshanth
name: Kawasaki, Wataru
name: Keimpema, Aard
name: Kettenis, Mark
name: Lopez, Jorge
name: Marvil, Joshua
name: Masters, Joseph
name: McNichols, Andrew
name: Mehringer, David
name: Miel, Renaud
name: Moellenbrock, George
name: Montesino, Federico
name: Nakazato, Takeshi
name: Ott, Juergen
name: Petry, Dirk
name: Pokorny, Martin
name: Raba, Ryan
name: Rau, Urvashi
name: Schiebel, Darrell
name: Schweighart, Neal
name: Sekhar, Srikrishna
name: Shimada, Kazuhiko
name: Small, Des
name: Steeb, Jan-Willem
name: Sugimoto, Kanako
name: Suoranta, Ville
name: Tsutsumi, Takahiro
name: van Bemmel, Ilse M.
name: Verkouter, Marjolein
name: Wells, Akeem
name: Xiong, Wei
name: Szomoru, Arpad
name: Griffith, Morgan
name: Glendenning, Brian
name: Kern, Jeff
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: CASA, the Common Astronomy Software Applications, is the primary data processing software for the Atacama Large Millimeter/submillimeter Array (ALMA) and the Karl G. Jansky Very Large Array (VLA), and is frequently used also for other radio telescopes. The CASA software can handle data from single-dish, aperture-synthesis, and Very Long Baseline Interferometery (VLBI) telescopes. One of its core functionalities is to support the calibration and imaging pipelines for ALMA, VLA, VLA Sky Survey (VLASS), and the Nobeyama 45m telescope. This paper presents a high-level overview of the basic structure of the CASA software, as well as procedures for calibrating and imaging astronomical radio data in CASA. CASA is being developed by an international consortium of scientists and software engineers based at the National Radio Astronomical Observatory (NRAO), the European Southern Observatory (ESO), the National Astronomical Observatory of Japan (NAOJ), and the Joint Institute for VLBI European Research Infrastructure Consortium (JIV-ERIC), under the guidance of NRAO.
description: Accepted for publication in PASP (20 pages, 4 figures). Joint publication with CASA-VLBI paper
Electronic structure and magnetic properties of L1_0 binary alloys
Creators: name: Edström, Alexander
name: Chico, Jonathan
name: Jakobsson, Adam
name: Bergman, Anders
name: Rusz, Jan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a systematic study of the magnetic properties of L1$_0$ binary alloys FeNi, CoNi, MnAl and MnGa via two different density functional theory approaches. Our calculations show large magnetocrystalline anisotropies in the order $1~\text{MJ/m}^3$ or higher for CoNi, MnAl and MnGa while FeNi shows a somewhat lower value in the range $0.48 - 0.77 ~\text{MJ/m}^3$. Saturation magnetization values of $1.3~\text{MA/m}$, $1.0~\text{MA/m}$, $0.8~\text{MA/m}$ and $0.9~\text{MA/m}$ are obtained for FeNi, CoNi, MnAl and MnGa respectively. Curie temperatures are evaluated via Monte Carlo simulations and show $T_\text{C}=916~\text{K}$ and $T_\text{C}=1130~\text{K}$ for FeNi and CoNi respectively. For Mn-based compounds Mn-rich off-stoichiometric compositions are found to be important for the stability of a ferro or ferrimagnetic ground state with $T_\text{C}$ greater than $600~\text{K}$. The effect of substitutional disorder is studied and found to decrease both magnetocrystalline anisotropies and Curie temperatures in FeNi and CoNi.
Using baffle to improve axial mixing in double cone blenders
Creators: name: Rastogi, Aman
Publisher: name: No Publisher Supplied
Year: 2018

description: Mixing is used in various processes across the industry and is an important operation to control the quality of products in particle processes. Rotary blenders are widely used for the mixing and dry impregnation operations and it has been understood from previous research that in such blenders the time scales for axial mixing were significantly larger than for radial mixing. The goals of this work are to understand how baffles affect the mixing process in a rotating vessel and to develop a method to determine the optimum baffle size and position to be used in a double cone vessel. To increase the extent of axial mixing, baffles that break the line of symmetry along the axis (three along the cylindrical section and two along the conical sections of the double cone) were considered. In this work we use Discrete Element Method (DEM) simulations to study systematically the effect of baffles on the axial mixing and dry impregnation in the double cone blender. The effect of different properties of baffles, e.g. height, position, angle of orientation of baffles with the various process parameters, e.g. fill level, particle size, rotation speed on the mixing performance were studied. To measure the degree of mixing we use the Kramer mixing index, which is based on the distance between the volume centers of an axially segregated system, was calculated to quantify the mixing of the system. Simulation results show that there is an optimal baffle height for low fill levels, beyond which the mixing performance declines. The angle of orientation has little to no effect on mixing performance for large particles, whereas for smaller particles, there is an optimum range of operation. Also, results for the baffle position indicated that it affects mixing significantly more at lower fill levels, and an optimum baffle position could be found. We determined the positions in the double cone for which the particle velocity is maximum. Our proposed hypothesis is that if the baffles are located in the position of maximum velocity, they will tend to break the flow and offer best mixing performance. We observe that baffles considerably increase homogeneity in the impregnation process, but we do not observe significant differences between mixing performance for different baffle positions.
Scalar Hairy Black Holes in General Dimensions
Creators: name: Feng, Xing-Hui
name: Lu, H.
name: Wen, Qiang
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We obtain a class of asymptotic flat or (A)dS hairy black holes in D-dimensional Einstein gravity coupled to a scalar with certain scalar potential. For a given mass, the theory admits both the Schwarzschild-Tangherlini and the hairy black holes with different temperature and entropy, but satisfying the same first law of thermodynamics. For some appropriate choice of parameters, the scalar potential can be expressed in terms of a super-potential and it can arise in gauged supergravities. In this case, the solutions develop a naked curvature singularity and become the spherical domain walls. Uplifting the solutions to D=11 or 10, we obtain solutions that can be viewed as spherical M-branes or D3-branes. We also add electric charges to these hairy black holes. All these solutions contain no scalar charges in that the first law of thermodynamics are unmodified. We also try to construct new AdS black holes carrying scalar charges, with some moderate success in that the charges are pre-fixed in the theory instead of being some continuous integration constants.
description: Latex, 21 pages, references and new comments added, typos corrected. To appear in PRD