cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Building a repository for record linkage
Creators: name: Leonard, Susan Hautaniemi
name: Israel, Abay
name: Levenstein, Margaret
name: Alexander, Trent
Publisher: name: Zenodo
Year: 2018

description: Attendees will learn about an exciting new venue for collaboration around data linkage methodology and evaluation, a joint project with ICPSR and Texas AM. The presentation will focus on lessons learned by ICPSR while building the DLRep, a repository and community space for researchers involved in linking and combining datasets, as collaboration between social, statistical, and computer scientists. A common benchmarking repository of linkage methodologies will propel the field to the next level of rigor by facilitating comparison of different algorithms, understanding which types of algorithms work best under different conditions and problem domains, promoting transparency and replicability of research, and encouraging proper citation of methodological contributions and their resulting datasets. It will bring together the diverse scholarly communities (e.g., computer scientists, statisticians, and social, behavioral, economic, and health (SBEH) scientists) who are currently addressing these challenges in disparate ways that do not build on one another's work. Improving linkage methodologies is critical to the production of representative samples, and thus to unbiased estimates of a wide variety of social and economic phenomena. The repository will accelerate the development of new record linkage algorithms and evaluation methods, improve the reproducibility of analyses conducted on integrated data, allow comparisons on same and different data, and move forward the provision of privacy-aware integrated data.
An initial estimation of the import demand for white wheat in South Korea
Creators: name: Martin, Michael V.
name: Knowles, Glenn J.
name: Gonarsyah, Isang
name: Oliveira, Ronald A.
name: Martin, Michael V.
name: Knowles, Glenn J.
name: Gonarsyah, Isang
name: Oliveira, Ronald A.
Publisher: name: Unknown
Year: 1981
Subjects: Crop Production/Industries
Demand and Price Analysis
International Relations/Trade

description: This paper attempts to address peculiarities of demand on a class specific, country-specific basis by estimating the excess demand for white wheat in the Republic of Korea. This analysis reflects a first step in a planned, more complete study of U.S.-Korean trade in wheat.
Threshold behavior of scattering poles
Creators: name: van Beveren, Eef
name: Rupp, George
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The results of a model for meson-meson scattering are studied. The model is shown to be capable of on the one hand reproducing the scattering data, while on the other hand a quark-antiquark confinement spectrum can be determined. It is concluded that adopting the model's formulation of the transition matrix elements for data analysis, it may serve as a link between experiment and quenched lattice calculations.
description: 13 pages plain LaTeX, 7 figures included; Talk given at the High-Energy Physics Workshop, Scalar Mesons: an Interesting Puzzle for QCD, May 16 - 18, 2003, SUNY Institute of Technology, Utica (NY)
Amaranthus tricolor var. tricolor Linnaeus 1753
Creators: name: Das, Saubhik
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Caryophyllales
Amaranthaceae
Amaranthus
Amaranthus tricolor
Amaranthus tricolor linnaeus (1753: 989) var. tricolor

description: Amaranthus tricolor Linnaeus (1753: 989) var. tricolor
 Type (lectotype designated by Townsend 1974: 14):— INDIA. Herb. Linnaeus 1117.7 (LINN!).
 Description: —Annual, small or robust monoecious herbs, 50–120 cm high. Stem erect or ascending, glabrous. Leaves deltoid-ovate, lanceolate or ovate-oblong to oval (9–17 × 5–9 cm), without stipule, spirally arranged, apex sub-acute often slightly notched, with a mucro. Flowers unisexual, arranged in small axillary glomerules and the terminal compound inflorescence of agglomerated cymes, male and female flowers intermixed; bracts and bracteoles broadly ovate-spathulate to ovate-lanceolate, apically awned or acute, 1.5–2.0 mm long; tepals 3, ovate-spathulate to ovate-lanceolate, awned or acute, membranous, 3.5–5.0 mm long; stamens 3, 4.5–5.0 mm long; carpels 3, 2.5–3.0 mm long, style short and thick, ovary ovoid, stigmas 3, filiform, with a short beak present in the lower part; fruit circumscissile, ovoid, 1.5–2.0 mm long; seed blackish-brown, shiny, compressed, 1.2–1.5 mm in diameter.
description: Published as part of Das, Saubhik, 2013, Infraspecific variability of Amaranthus tricolor (Amaranthaceae) in India with a new variety, pp. 25-30 in Phytotaxa 88 (2) on page 26, DOI: 10.11646/phytotaxa.88.2.2, http://zenodo.org/record/5071882
Lorentz Invariance of Basis Tensor Gauge Theory
Creators: name: Basso, Edward
name: Chung, Daniel J. H.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Basis tensor gauge theory (BTGT) is a vierbein analog reformulation of ordinary gauge theories in which the vierbein field describes the Wilson line. After a brief review of the BTGT, we clarify the Lorentz group representation properties associated with the variables used for its quantization. In particular, we show that starting from an SO(1,3) representation satisfying the Lorentz-invariant U(1,3) matrix constraints, BTGT introduces a Lorentz frame choice to pick the Abelian group manifold generated by the Cartan subalgebra of u(1,3) for the convenience of quantization even though the theory is frame independent. This freedom to choose a frame can be viewed as an additional symmetry of BTGT that was not emphasized before. We then show how an $S_4$ permutation symmetry and a parity symmetry of frame fields natural in BTGT can be used to construct renormalizable gauge theories that introduce frame dependent fields but remain frame independent perturbatively without any explicit reference to the usual gauge field.
Open Science and Research Data Management - The European Commission perspective from H2020 to Horizon Europe
Creators: name: Lazzeri, Emma
Publisher: name: Zenodo
Year: 2021
Subjects: Open Science
European Commission
Horizon Europe

description: The European Commission started its Open Science strategy in 2007, with the FP7 work programme. Horizon 2020 has seen data becoming the focus of the open access data pilot and Horizon Europe will see Open Science become the new normal in research. This talk will summarise the most important steps in the EC strategy throughout the years.
Surgical Workflow Anticipation
Creators: name: Yuan, Kun
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2022
Subjects: Surgical Workflow Analysis
Deep Learning
Computer Vision
Medical Imaging

description: As a non-robotic minimally invasive surgery, endoscopic surgery is one of the widely used surgeries for the medical domain to reduce the risk of infection, incisions, and the discomfort of the patient. The endoscopic surgery procedure, also named surgical workflow in this work, can be divided into different sub-phases. During the procedure, the surgeon inserts a thin, flexible tube with a video camera through a small incision or a natural orifice like the mouth or nostrils. The surgeon can utilize tiny surgical instruments while viewing organs on the computer monitor through these tubes. The surgery only allows a limited number of instruments simultaneously appearing in the body, requiring a sufficient instrument preparation method. Therefore, surgical workflow anticipation, including surgical instrument and phase anticipation, is essential for an intra-operative decision-support system. It deciphers the surgeon's behaviors and the patient's status to forecast surgical instrument and phase occurrence before they appear, supporting instrument preparation and computer-assisted intervention (CAI) systems. In this work, we investigate an unexplored surgical workflow anticipation problem by proposing an Instrument Interaction Aware Anticipation Network (IIA-Net). Spatially, it utilizes rich visual features about the context information around the instrument, i.e., instrument interaction with their surroundings. Temporally, it allows for a large receptive field to capture the long-term dependency in the long and untrimmed surgical videos through a causal dilated multi-stage temporal convolutional network. Our model enforces an online inference with reliable predictions even with severe noise and artifacts in the recorded videos. Extensive experiments on Cholec80 dataset demonstrate the performance of our proposed method exceeds the state-of-the-art method by a large margin (1.40 v.s. 1.75 for inMAE and 2.14 v.s. 2.68 for eMAE).
On reflection algebras and twisted Yangians
Creators: name: Doikou, Anastasia
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: It is known that integrable models associated to rational $R$ matrices give rise to certain non-abelian symmetries known as Yangians. Analogously `boundary' symmetries arise when general but still integrable boundary conditions are implemented, as originally argued by Delius, Mackay and Short from the field theory point of view, in the context of the principal chiral model on the half line. In the present study we deal with a discrete quantum mechanical system with boundaries, that is the $N$ site $gl(n)$ open quantum spin chain. In particular, the open spin chain with two distinct types of boundary conditions known as soliton preserving and soliton non-preserving is considered. For both types of boundaries we present a unified framework for deriving the corresponding boundary non-local charges directly at the quantum level. The non-local charges are simply coproduct realizations of particular boundary quantum algebras called `boundary' or twisted Yangians, depending on the choice of boundary conditions. Finally, with the help of linear intertwining relations between the solutions of the reflection equation and the generators of the boundary or twisted Yangians we are able to exhibit the symmetry of the open spin chain, namely we show that a number of the boundary non-local charges are in fact conserved quantities
description: 16 pages LATEX, clarifications and generalizations added, typos corrected. To appear in JMP
Electron Groups in Solar Wind and Gas Discharge Plasmas
Creators: name: Kolobov, Vladimir
name: Arslanbekov, Robert
name: Levko, Dmitry
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The formation of electron groups is a common phenomenon in gas discharges and space plasmas. We describe similarities between electron kinetics in solar wind, cathode region of glow discharges, and magnetic nozzles. Remarkable resemblances between adiabatic focusing of magnetized electrons and spherical geometry effects for neutral particles escaping planet atmosphere are pointed out. The previously developed kinetic solvers for electrons coupled to Poisson equation for self-consistent simulations of the electric field are used to analyse the formation of electron groups in the cathode region of glow discharges and solar wind plasma.
Preparation and characterisation of green clay-polymer nanocomposite for heavy metals removal
Creators: name: K. Ravikumar
name: J. Udayakumar
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Space Science
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 20199 Astronomical and Space Sciences not elsewhere classified
subject: Cancer
subject: Inorganic Chemistry
subject: Hematology

description: Natural polymer Moringa oleifera seed as coagulant and bentonite clay as adsorbent were used for preparing novel composite coagulant. Results obtained from FTIR, SEM, TEM and P-XRD show that the bentonite clay and M. oleifera seed biopolymers physico-chemically interact with each other during the preparation of clay-polymer composite. The FTIR results show that the major functional groups present in bentonite clay and M. oleifera seed are integrated at nano levels in the novel composite to remove heavy metals from aqueous systems. The coagulo-adsorption using clay-polymer composite may be used for the adsorption of heavy metals ions from the aqueous systems. It becomes possible due to the structural characteristics of the clay crystallites together with the functional attraction of the biopolymer and it results in the formation of clay-polymer metal complexes. The clay-polymer nano-composite of M. oleifera seed and bentonite clay showed considerable cadmium, chromium and lead removal property.
Morfometria da copa e fuste da arborização urbana de São João Evangelista-MG, Brasil
Creators: name: Perpétuo, Isadora Azevedo
name: Lafetá, Bruno Oliveira
name: Fontan, Ivan da Costa Ilhéu
name: Miranda, Jonathan da Rocha
name: Vieira, Diego dos Santos
name: Aguiar, Letícia Caldeira
name: Ribeiro, Carlos Henrique Lopes
Publisher: name: UFVJM
Year: 2024
Subjects: paisagem urbana
regressão
relação interdimensional
tendência sigmoidal

description: Investigações científicas sobre a morfometria da copa e fuste de árvores subsidiam o planejamento e gerenciamento da arborização urbana, importante para a sustentabilidade ambiental de cidades. O objetivo deste trabalho foi avaliar a eficiência da modelagem de relações morfométricas de copa e fuste da arborização urbana do município de São João Evangelista-MG, empregando modelos de regressão não lineares. O inventário da arborização consistiu na amostragem aleatória de árvores em diferentes vias e praças públicas do município. A altura total, altura de inserção da copa, diâmetro à altura do solo, proporção e área de projeção da copa aumentaram à medida que fustes se tornaram mais grossos. O decrescimento com o aumento do DAP foi observado apenas para o índice de saliência e grau de esbeltez. Relações morfométricas podem ser estimadas com precisão por modelos de regressão não linear de característica sigmoidal. Informações sobre tendências do estoque de crescimento morfométrico de árvores em altura total, altura de inserção da copa, área de projeção e raio da copa são úteis para definições do local ideal de plantio em áreas urbanas e de eventuais intervenções silviculturais.
Uncovering the system-level regulatory architecture of gene expression in humans
Creators: name: Luo, Junhong
Publisher: name: The Australian National University
Year: 2011
Subjects: subject: QH450.2.L86 2011
subject: Genetic transcription Regulation
subject: Transcription factors

description: Uncovering the system-level transcriptional regulatory architecture of gene expression in human has been a major focal point in modern systems biology researches. Human genes are commonly under coordinated and combinatorial transcriptional regulation mediated by a class of proteins known as transcription factors. Recent technological advancements have enabled comprehensive mapping of transcription factor binding motifs in human genome through both experimental (e.g. ChIP-seq) and computational (e.g. comparative sequence analysis) methods. Collections of defined transcription factor binding motifs and their corresponding target genes in a given species can be used as a "dictionary" to define groups of genes that have the potential of being under coordinated control. Utilising a large-scale transcription factor binding motif location data in human genome, this study has defined a comprehensive genome-wide binding motif dictionary of human transcription factors. Instead of inferring transcriptional regulatory networks from co-expression, this study attempted to take the opposite approach in which, by using simple multivariate data analysis methods and graph theory, groups of genes under putative transcriptional co-regulation were defined based on the promoter motif content similarity between genes. These defined networks of genes could be used as a platform for incorporating other biological datasets to clarify the system-level regulatory architecture of human genes. In this thesis, independent gene function annotation, gene expression and ChIP-seq datasets were employed to bring in functional and biological insights, and also to provide independent validations for the regulatory networks defined based on promoter motif content similarity. The results showed the regulatory networks defined in this work were of biological significance. More specifically, groups of genes under putative co-regulation defined in this study on the basis of sharing common transcription factor binding motifs were likely to share common function and expression. Overall, the affirmative findings described in this thesis demonstrated the feasibility of identifying putative gene regulatory networks by using large-scale motif dictionaries.
BIO4AFRICA_ Screening of existing small-scale biobased technologies _3. CATALOGUE_221022_1
Creators: name: Aragonés, Marta Macías
name: Domínguez, Carmen Girón
name: Olmo, Luisa Domínguez Del
name: E. Tsagariki
name: M. Bougiosklis
name: Gaffey, James
name: McMahon, Helena
Publisher: name: Zenodo
Year: 2022
Subjects: bio-based technologies
circular business models
small-scale biorefinery
high value feed
Africa
biochar
sustainable rural development
Bioproducts

description: The purpose of the catalog was to identify and classify existing small-scale bio-based technologies to produce a catalogue of technologies with potential for being successfully adapted and transferred to different contexts across rural Africa. The most important European and international technological developments in the field have been identified and classified. The classification considered: (i) scale (farm, village, community, etc.); (ii) technological readiness level (clearly distinguishing fundamental research to more applied and over to commercial applications); and (iii) market deployment level (incl. important non-technical deployment barriers, if any).
Towards Data-Efficient Learning: A Benchmark for COVID-19 CT Lung and Infection Segmentation
Creators: name: Ma, Jun
name: Wang, Yixin
name: An, Xingle
name: Ge, Cheng
name: Yu, Ziqi
name: Chen, Jianan
name: Zhu, Qiongjie
name: Dong, Guoqiang
name: He, Jian
name: He, Zhiqiang
name: Zhu, Yuntao
name: Nie, Ziwei
name: Yang, Xiaoping
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Purpose: Accurate segmentation of lung and infection in COVID-19 CT scans plays an important role in the quantitative management of patients. Most of the existing studies are based on large and private annotated datasets that are impractical to obtain from a single institution, especially when radiologists are busy fighting the coronavirus disease. Furthermore, it is hard to compare current COVID-19 CT segmentation methods as they are developed on different datasets, trained in different settings, and evaluated with different metrics. Methods: To promote the development of data-efficient deep learning methods, in this paper, we built three benchmarks for lung and infection segmentation based on 70 annotated COVID-19 cases, which contain current active research areas, e.g., few-shot learning, domain generalization, and knowledge transfer. For a fair comparison among different segmentation methods, we also provide standard training, validation and testing splits, evaluation metrics and, the corresponding code. Results: Based on the state-of-the-art network, we provide more than 40 pre-trained baseline models, which not only serve as out-of-the-box segmentation tools but also save computational time for researchers who are interested in COVID-19 lung and infection segmentation. We achieve average Dice Similarity Coefficient (DSC) scores of 97.3\%, 97.7\%, and 67.3\% and average Normalized Surface Dice (NSD) scores of 90.6\%, 91.4\%, and 70.0\% for left lung, right lung, and infection, respectively. Conclusions: To the best of our knowledge, this work presents the first data-efficient learning benchmark for medical image segmentation and the largest number of pre-trained models up to now. All these resources are publicly available, and our work lays the foundation for promoting the development of deep learning methods for efficient COVID-19 CT segmentation with limited data.
description: accepted for publication in Medical Physics
An evaluation of a metamodel for documenting data transformations in the ALPHA Network
Creators: name: Chifundo Kanjala
name: Greenfield, Jay
name: Beckles, David
name: Basia Zaba
Publisher: name: Zenodo
Year: 2018

description: The network for Analysing Longitudinal Population based HIV/AIDS data on Africa (ALPHA) brings together ten African collaborating research institutions conducting community-based HIV surveillance. At the heart of the network's activities is extensive after-the-fact data harmonisation processes comprising transformations of data from disparate sources into predefined uniform formats. While the documentation of the source data is generally understood, the documentation of data transformations involved in creating the ALPHA harmonised datasets in still shrouded in mystery. In an effort to address this issue, our study evaluates the applicability of a generic and customisable framework for describing extract, transform, and Load (ETL) scenarios for documenting ALPHA transformations. We seek to examine whether the framework covers the common ALPHA data harmonisation scenarios. Further, we assess its capabilities regarding facilitation of reproduction of ALPHA data transformations processes. We will also consider the potential for further formalisation of the ALPHA adapted framework within metadata standards such as the Data Documentation Initiative (DDI 4) model.
Caretakers of Second Narrows : A Living Guide to Gathering, Pruning, Making, On-Site Analysis & Intervention
Creators: name: Lebitania, Kristian
Publisher: name: The University of British Columbia
Year: 2023

description: This project is a living guide and process. It explores representations of care, labour, and placemaking in the disturbed forest of Second Narrows Park in Burnaby. It serves as a living guide to developing an embodied relationship with a site by taking on the role of a caretaker; a process often underrepresented in the realm of design. Through maintenance practices, a designer can grow an understanding of the land through the fluid process of analysis, observation, and intervention using their bodies. The final representation is a film demonstrating the process of developing a personal relationship to the land over the course of 15 site visits from January to April 2023.
Cluster Formation Rate in Models with Dark Energy
Creators: name: Basilakos, S.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Based on flat Friedmann-Robertson Walker cold dark matter (CDM) type models driven by non-relativistic matter and an exotic fluid (quintessence) with an equation of state: $p_{Q}=wρ_{Q}$ ($-1\le w<0$), we investigate whether or not the large scale dynamical effects regarding the cluster formation and virialization are related to the cosmic equation of state. Using the non-linear spherical collapse we find that the cluster formation rate, in quintessence models, is intermediate between the open and $Λ$CDM respectively. For the QCDM case, using the virial theorem and energy conservation and assuming a spherical mass overdensity shell, we obtain analytically the ratio between the final (virial) and the turn-around radius. We find that the above ratio is almost independent from the equation of state.
description: 13 pages, including 3 figures, accepted for publication in ApJ Vol: 590, June 2003. Minor changes
New term in effective field theory at fixed topology
Creators: name: Kieburg, M.
name: Lauritzen, M.
name: Søgaard, B. T.
name: Splittorff, K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A random matrix model for lattice QCD which takes into account the positive definite nature of the Wilson term is introduced. The corresponding effective theory for fixed index of the Wilson Dirac operator is derived to next to leading order. It reveals a new term proportional to the topological index of the Wilson Dirac operator and the lattice spacing. The new term appears naturally in a fixed index spurion analysis. The spurion approach reveals that the term is the first in a new family of such terms and that equivalent terms are relevant for the effective theory of continuum QCD.
description: 22 pages, 2 figures, version to appear in PRD
Population growth and control in stochastic models of cancer development
Creators: name: Ochab-Marcinek, Anna
name: Gudowska-Nowak, Ewa
Publisher: name: arXiv
Year: 2004
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: We study the joint effect of thermal bath fluctuations and an external noise tuning activity of cytotoxic cells on the triggered immune response in a growing cancerous tissue. The immune response is assumed to be primarily mediated by effector cells that develop a cytotoxic activity against the abnormal tissue. The kinetics of such a reaction is represented by an enzymatic-like Michaelis-Menten two step process. Effective free-energy surface for the process is further parametrized by the fluctuating energy barrier between the states of high and low concentration of cancerous cells. By analyzing the far from equilibrium escape problem across the fluctuating potential barrier, we determine condtions of the most efficient decay kinetics of the cancer cell-population in the presence of dichotomously fluctuating concentration of cytotoxic cells.
description: Submitted to Physica A Corrected spelling errors. Title changed to more appropriate for the content. Extended Conclusions section. Added a short explanation about the meaning of parameters t_t and t_r. References collected in proper order
Graphical models for inference and learning in computer vision
Creators: name: McAuley, Julian John
Publisher: name: The Australian National University
Year: 2011
Subjects: subject: TA1634.M33 2011
subject: Computer graphics
subject: Image processing
subject: Computer vision

description: Graphical models are indispensable as tools for inference in computer vision, where highly structured and interdependent output spaces can be described in terms of low-order, local relationships. One such problem is that of graph matching, where the goal is to localise various parts of an object within an image: although the number of joint configurations of these parts may be very large, the relationships between them can typically be described in terms of simple skeletal structures, which lead to tractable inference. We study problems of this type from three perspectives: firstly, how can we design graphical models to accurately model matching problems in computer vision? Secondly, how can machine learning be applied to such models, so that our inference algorithms can leverage the characteristics of a certain dataset? Thirdly, how can we exploit the specific energies that arise in this domain to develop faster inference algorithms, beyond the pessimistic worst-case results known for inference in graphical models? Naturally, these three problems are closely related, since both accurate and efficient inference are required by many learning algorithms.
String Inspired Neutrino Mass Textures in Light of KamLAND and WMAP
Creators: name: Coriano, Claudio
name: Faraggi, Alon E.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recent data from astrophysical and terrestrial experiments indicates large mixing angles in the neutral lepton sector and restricts the allowed regions of neutrino masses. In particular, the large mixing angles in the lepton sector are disparate from the small mixing in the quark sector. This disparity is unnatural from the point of view of grand unified theories, that are well motivated by the Standard Model multiplet structure and logarithmic running of its parameters. we examine the issue of this disparity from the perspective of string derived SO(10) GUT models, in which the SO(10) symmetry is broken directly at the string theory level. A characteristic feature of such models is the appearance of numerous SO(10) singlet fields. We propose that the mismatch between the quark and lepton mixing parameters arises due to this extended singlet spectrum and its mixing with the right-handed neutrinos. We discuss a string inspired effective parameterization of the extended neutrino mass matrix and demonstrates that the coupling with the SO(10) singlet spectrum can readily account for the neutrino flavor parameters. The mechanism implies that some SO(10) singlet fields should exist at intermediate mass scales. We study the possibilty of deriving the neutrino mass spectrum from string theory in a specific string derived vacuum solution, and comment on the properties that such a solution should possess.
description: 16 pages. Standard Latex. Minor corrections. Version to appear in Physics Letters B
Amaranthus tricolor Linnaeus 1753
Creators: name: Das, Saubhik
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Caryophyllales
Amaranthaceae
Amaranthus
Amaranthus tricolor

description: Key to the varieties of Amaranthus tricolor
 1. Leaf ovate-oblong, apex emerginate, tepal apex acute, as long as or shorter than fruit .............. A. tricolor var. acutus
- Leaf usually ovate-lanceolate or deltoid–ovate, tepal apex awned, tepals much longer than fruit............................. 2
 2. Branching from base of the stem .................................................................................................. A. tricolor var. tristis
 - Branching from middle of the stem ........................................................................................... A. tricolor var. tricolor
description: Published as part of Das, Saubhik, 2013, Infraspecific variability of Amaranthus tricolor (Amaranthaceae) in India with a new variety, pp. 25-30 in Phytotaxa 88 (2) on page 29, DOI: 10.11646/phytotaxa.88.2.2, http://zenodo.org/record/5071882
How the Euro Question Bank project makes survey questions available to the social sciences
Creators: name: Seyedeh Azadeh Mahmoud Hashemi
name: Zenk-Moeltgen, Wolfgang
name: Muehlbauer, Alexander
name: Akdeniz, Esra
Publisher: name: Zenodo
Year: 2018

description: This presentation will give an overview of how different Data Archives (CESSDA) can import their survey questions with heterogeneous technologies and formats into Euro Question Bank (EQB). The Consortium of European Social Science Data Archives (CESSDA) Euro Question Bank (EQB) project has implemented a central search facility across all CESSDA survey questions of different datasets in different languages. For this it uses a metadata schema based on the DDI-Lifecycle standard and provides conversion mappings from other metadata standards. All CESSDA service providers can document their contents using those standards with different technologies to supply their survey questions to EQB. The EQB system architecture consists of two main parts, the EQB-Front-end and the EQB-Back-end. The EQB-Front-end is being implemented by Vaadin, a user interface technology for interacting between different web services. The EQB-Back-end comprises different technologies, such as Elasticsearch, Open Source Metadata Harvester (OSMH), etc. Elasticsearch is a search engine used for indexing the JSON format. The Open Source Metadata Harvester (OSMH) is a project by CESSDA to enable harvesting of different formats. It classifies the entities and objects to be harvested and enables repository owners to write their own repository handlers for the technology they use. By providing an easy access to a comprehensive collection of survey questions from studies all over Europe, the Euro Question Bank will contribute to more comparability between past and future survey data within the social sciences.
From the woods up high, From the heart down deep : Spatializing the legends of Camp Minogami
Creators: name: Tulk, Pierre
Publisher: name: The University of British Columbia
Year: 2023

description: The typology of summer camps remains inexplicably underexplored in landscape architecture. As unique educational sites and complex historical vehicles of multiple social ideologies, these liminal spaces for self-exploration and transcendence provide unique programmatic and conceptual opportunities, in part due to their rich narrative qualities. This project seeks to expand the professional reflection of landscape architects on the typology of summer camps by exploring their potential as sites of rites of passage, self-discovery, and interaction with the landscape. The chosen site of intervention is Camp Minogami, a summer camp situated in the richly historical and highly contested Nitaskinan (Mauricie) territory in the province of Quebec. The author, having spent several years at Camp Minogami as both a camper and a counselor, proposes hypothetical design interventions that aim to honor the Genius Loci (sometimes referred to as “Camp Spirit”) of the place and to spatialize the camp-specific tales and legends. These interventions are guided by several principles, including risky play, the reuse of site materials, and a non-prescriptive approach that emphasizes the independence, agency, and creative effort of the camp users. Drawing on hermeneutic and phenomenological concepts of place and embodiment, this project explores how the designed interventions can facilitate a deeper engagement with the camp’s historical and ecological context and create spaces for personal and communal transformation. The proposed design interventions at Camp Minogami aim to extend the discourse on the landscape architecture of summer camps and contribute to the field of design for transformative experiences.
Robust block preconditioners for poroelasticity
Creators: name: Chen, Shuangshuang
name: Hong, Qingguo
name: Xu, Jinchao
name: Yang, Kai
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: In this paper we study the linear systems arising from discretized poroelasticity problems. We formulate one block preconditioner for the two-filed Biot model and several preconditioners for the classical three-filed Biot model under the unified relationship framework between well-posedness and preconditioners. By the unified theory, we show all the considered preconditioners are uniformly optimal with respect to material and discretization parameters. Numerical tests demonstrate the robustness of these preconditioners.
Self Sustained Thermally Induced Gas-Damped Oscillations of Bimetal Cantilevers with Application to the Design of a New Pyroelectric Micro Energy Harvester
Creators: name: Gebrael, Tarek
name: Kanj, Ali
name: Farhat, Daniel
name: Shehadeh, Mutasem
name: Lakkis, Issam
Publisher: name: arXiv
Year: 2019
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Low efficiency is the main drawback of many MEMS thermal energy harvesters. Recently, energy harvesting micro-devices that operate using the pyroelectric effect gained attention due to their potential superior performance. Operation of these devices is based on the cyclic motion of a pyroelectric capacitor that operates between a high temperature and a low temperature reservoirs. In this paper, we investigate the dynamics of oscillations of a pyroelectric capacitor self sustained by thermally actuated bimetal micro-cantilevers, a topic which is so far under investigated. In addition to highlighting key thermodynamic aspects of the operation, we explore conditions for self-sustained oscillations and discuss the viability of operation at the mechanical resonance frequency. The analysis is presented for a new design inspired by the device proposed in Refs.\cite{2011,2012}, where in contrast, our proposed design boasts the following features: The pyroelectric capacitor remains parallel to the heat reservoirs, by virtue of its symmetric support by two bimetallic cantilever beams; In addition, the cyclic operation of the device does not require physical contact, thus lowering the risk of mechanical failure; To adjust the damping force imparted by the surrounding gas, the thermal reservoirs are equipped with trenches. To study the dynamic operation of the device, we developed a physically based reduced order, yet accurate, model that accounts for the heat transfer between and within the different components, and for the various forces including the gas damping force. The model is embedded within an optimization algorithm to produce optimal designs over the range 26-38 C of temperature difference between the two reservoirs. The corresponding range of harvested power density is 0.4-0.65 mW/cm2.
A New Contributor to Chemical Evolution in High-Redshift Galaxies
Creators: name: Tsujimoto, Takuji
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The recent discovery of a new population of stars exhibiting unusual elemental abundance patterns characterized by enhanced Ti to Ga elements and low alpha and n-capture elements suggests the contribution of a new class of supernovae, probably a kind of Type Ia supernovae associated with close binary evolution. The role of these supernovae in chemical evolution is negligible in normal galaxies that undergo moderate star formation such as our own. Thus, while the frequency of occurrence would be too low to detect in low-redshift galaxies, it may represent a prominent population in high-redshift objects such as early epoch massive elliptical galaxies and QSOs. The chemical contributor of this proposed type of supernovae in combination with recognized supernovae is shown to be compatible with the recent observational features in the distant universe, successfully reproducing the Type II supernovae-like abundance pattern with enhancement of Ga and Ge in the gas of newborn massive galaxies and high iron abundances in QSOs even at redshifts of around 6.
description: 5 pages, 1 figure, To appear in ApJ Letters
Silene neglecta subsp. neglecta Tenore 1826
Creators: name: Peruzzi, Lorenzo
name: Carta, Angelino
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Caryophyllales
Caryophyllaceae
Silene
Silene neglecta
Silene neglecta tenore (1826: 13) subsp. neglecta

description: Silene neglecta Tenore (1826: 13) subsp. neglecta
 Type (lectotype here designated):— ITALY. Campania: Persano, s.d., Tenore s.n. (NAP!).
description: Published as part of Peruzzi, Lorenzo & Carta, Angelino, 2013, A taxonomic revision of Silene nocturna species complex (Caryophyllaceae) in Italy, pp. 38-48 in Phytotaxa 88 (3) on page 45, DOI: 10.11646/phytotaxa.88.3.1, http://zenodo.org/record/5071896
Quark stars admitting a one-parameter group of conformal motions
Creators: name: Mak, M. K.
name: Harko, T.
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: An exact analytical solution describing the interior of a charged strange quark star is found under the assumption of spherical symmetry and the existence of a one-parameter group of conformal motions. The solution describes a unique static charged configuration of quark matter with radius $R=9.46$ km and total mass $M=2.86M_{\odot}$.
description: 5 pages, no figures, to appear in IJMPD
Material Behavior During High Velocity Impacts - Novel Numerical Approaches
Creators: name: Rahmati, Saeed
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2022
Subjects: Cold Spray
Simulation
Finite Element Method
Molecular Dynamics
Metallurgical Bonding
Critical Velocity

description: The prediction of material behavior and its microstructural evolution during high velocity impacts has been investigated for decades. The application of this topic can be observed in various engineering applications such as the cold spray process. Cold spray (CS) is an additive manufacturing method in which solid particles are accelerated using a low temperature supersonic inert gas flow, prior to their impact onto a substrate and adhesion/consolidation. In this process, unlike other thermal spray processes, the particles are kept well below their melting point prior to impact. This allows the CS process to be used for the manufacturing of high quality, specialized products at a low energy input. In CS, the deformation and bonding processes happen in a very short time (less than 100 ns). With the current technology, in-situ investigation is almost impossible. In this situation, numerical modeling methods are the best alternative to study the deposition process. There are several factors influencing the particle deposition, such as particle/substrate material properties, particle size, material temperature, particle velocity and so on, but it has been shown that the particle impact velocity has the major role during the deposition process. In fact, despite the type of bonding, i.e., mechanical or chemical, particle is sticking to the substrate after experiencing severe plastic deformation that occurs upon the impact at high velocities. Therefore, in order to develop the understating of the CS process, investigating the deformation behavior of material during high velocity impacts, and also bonding mechanisms involved during particle deposition must be investigated. III Although numerous studies have been done to explore the mechanisms occurring during particle deposition, the details of this process are still unclear. Therefore, the purpose of this research is to study the fundamental aspects of material behavior during the deformation and deposition processes with the aim of improving the understating of the CS process. Two different numerical approaches will be used to achieve the objective of the study, i.e., Finite Element Method (FEM) and Molecular Dynamics (MD) method. FEM will be used to study the metallic bonding occurring between the particle and the substrate. A physically based model to predict this phenomenon will be implemented into ABAQUS/Explicit FEM software. MD simulations will be performed to investigate the microstructure evolution during high velocity impacts. In order to characterize the deformation behavior of materials at a fundamental level, analysis will be focused on the basic mechanisms of plasticity and hardening in metals, i.e., the multiplication, glide and locking of dislocations, and also solid-state amorphization that happens at high strain rate deformations.
Flow associated with Lighthill's elongated-body theory
Creators: name: Eloy, Christophe
name: Michelin, Sébastien
Publisher: name: arXiv
Year: 2024
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: The hydrodynamic forces acting on an undulating swimming fish consist of two components: a drag-based resistive force and a reactive force originating from the necessary acceleration of an added mass of water. Lighthill's elongated-body theory, based on potential flow, provides a framework for calculating this reactive force. By leveraging the high aspect ratio of most fish, the theory simplifies the problem into a series of independent two-dimensional slices of fluids along the fish's body, which exchange momentum with the body and neighbouring slices. Using momentum conservation arguments, Lighthill's theory predicts the total thrust generated by an undulating fish, based solely on the dimensions and kinematics of its caudal fin. However, the assumption of independent slices has led to the common misconception that the flow produced lacks a longitudinal component. In this paper, we revisit Lighthill's theory, offering a modern reinterpretation using essential singularities of potential flows. We then extend it to predict the full three-dimensional flow field induced by the fish's body motion. Our results compare favourably with numerical simulations of realistic fish geometries.
description: 14 pages, 4 figures
Weak cosmic censorship conjecture for the novel $4D$ charged Einstein-Gauss-Bonnet black hole with test scalar field and particle
Creators: name: Yang, Si-Jiang
name: Wan, Jun-Jie
name: Chen, Jing
name: Yang, Jie
name: Wang, Yong-Qiang
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recent researches of the novel $4D$ Einstein-Gauss-Bonnet (EGB) gravity have attracted great attention. In this paper, we investigate the validity of the weak cosmic censorship conjecture for a novel $4D$ charged EGB black hole with test charged scalar field and test charged particle respectively. For the test charged field scattering process, we find that both extremal and near-extremal black holes cannot be overcharged. For the test charged particle injection, to first order, an extremal black hole cannot be overcharged while a near-extremal $4D$ charged EGB black hole can be destroyed. To second order, however, both extremal and near-extremal $4D$ charged EGB black holes can be overcharged for positive Gauss-Bonnet coupling constant; for negative Gauss-Bonnet coupling constant, an extremal black hole cannot be overcharged and the validity of the weak cosmic censorship conjecture for a near-extremal black hole depends on the Gauss-Bonnet coupling constant.
description: 13 pages,1 figure;V2: discussions and references added; V3: published version
Combining Project Management & Digitization Efforts to Benefit Collections, Big and Small
Creators: name: Berger, Frederik
name: Schuster, Franziska
Publisher: name: Zenodo
Year: 2024

description: Importance of Digitization for the MfN, Establishing Digitization Priorities, Coordination of Work, How to be cross-functional and break silos, Leadership Buy-in, Challenges, Coordination at a Global Level.
Quarkonia production with the Hera-B experiment
Creators: name: Spengler, Joachim
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Measurements of the dependence of the J/Psi production cross section on its kinematic variables as well as on the target atomic numbers for 920 GeV/c protons incident on different targets have been made with the Hera-B detector. The large collected di-lepton sample allows to study the production ratio of Psi(2S) to J/Psi and of Chic to J/Psi . We also report on measurements of the b-bbar and Upsilon production cross section.
description: 9 pages, 11 figures