cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
OILA MUSTAHKAMLIGINI OSHIRISHDA SOGʻLOM TURMUSH TARZI VA IQTISODIY YUKSALISH
Creators: name: Qodirov, Xasanboy
name: Evatov, Saminjon
Publisher: name: Zenodo
Year: 2023

description: Sog'lom turmush va tafakkur tarzini, sog'lom tarbiya tizimini qaror toptirishning pirovard maqsadi sog'lom avlodni shakllantirishdan iborat. "Sog'lom avlodni tarbiyalash, - deb yozadi M.Holmatova, - buyuk davlat poydevorini, farovon hayot asosini qurish demakdir. Sog'lom avlodni tarbiyalash - ikki jihat - yosh avlodni jismonan sog'lom etib tarbiyalash va ularni ma'naviy barkamol etib voyaga yetkazishni o'zida mujassamlashtiradi".
Hilbert-Samuel sequences of homogeneous finite type
Creators: name: Loginov, Konstantin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Commutative Algebra (math.AC)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: This paper deals with the problem of the classification of the local graded Artinian quotients $\mathbb{K}[x,y]/I$ where $\mathbb{K}$ is an algebraically closed field of characteristic $0$. They have a natural invariant called Hilbert-Samuel sequence. We say that a Hilbert-Samuel sequence is of homogeneous finite type, if it is the Hilbert-Samuel sequence of a finite number of isomorphism classes of graded local algebras. We give the list of all the Hilbert-Samuel sequences of homogeneous finite type in the case of algebras generated by $2$ elements of degree $1$.
A spreadsheet calculator for the diagnosis of ALS
Creators: name: Shan, Rodney Li Pi
name: Korngut, Lawrence
name: Brooks, Benjamin
Publisher: name: F1000 Research Limited
Year: 2018

description: We have developed a computerized spreadsheet calculator that facilitates uniformity and accuracy in the classification of ALS based on the El Escorial, Airlie House, and Awaji-Shima Criteria.
Szemerédi's regularity lemma via martingales
Creators: name: Dodos, Pandelis
name: Kanellopoulos, Vassilis
name: Karageorgos, Thodoris
Publisher: name: arXiv
Year: 2014
Subjects: subject: Combinatorics (math.CO)
subject: Functional Analysis (math.FA)
subject: Probability (math.PR)
subject: FOS: Mathematics

description: We prove a variant of the abstract probabilistic version of Szemerédi's regularity lemma, due to Tao, which applies to a number of structures (including graphs, hypergraphs, hypercubes, graphons, and many more) and works for random variables in $L_p$ for any $p>1$. Our approach is based on martingale difference sequences.
title: Technical Limitations for Designing Applications for Social Media
Creators: name: Reuter, Christian
name: Scholl, Simon
Publisher: name: De Gruyter
Year: 2023

description: Social media content is used in various applications for businesses, organizations and citizens. However, there are technical limitations for analyzing content from social media; these include the way how data can be gained and which safety regulations as well as query limitations have to be considered. They are of specific importance when designing applications for time critical scenarios, such as crisis management. This paper analyzes these limitations (in June 2014) for the most important social media. The selection of social media is based on the Monthly Active Users (MAU), which counts unique users over 30 days. Besides the identification of various limitations, this paper outlines approaches to access the data and summarizes design considerations.
Exploring user needs in relation to algorithmically constructed classifications of publications: A case study
Creators: name: Sjögårde, Peter
Publisher: name: Zenodo
Year: 2022

description: I have studied users’ information needs in a project aiming to strengthen collaboration and competence of AI related activities at KI. An important information need in the project was to get knowledge about who is doing what within AI. This information was essential to build efficient support structures, improve communication and collaboration and increase competence. The overall goal of AI@KI was to develop a more focused, structured, strategic and professional use of AI at the university. The case study exemplifies how ACPLCs may support managers at universities by providing information about the topical structure of research output that reflects research activities. The ACPLC-based cluster map was useful in the project to completement other activities, including supporting qualitative work, such as interviews and social network building. Furthermore, it provided overview and displayed the research of interest. The ACPLC led to a wider perspective on AI at the university and helped the project to reach researchers in a broader range of research fields. The study showed that it is challenging to interpret the contents of clusters. Interpretation of clusters was supported by the possibility to get both overview and detail in the visualization of the ACPLC. The possibility to navigate from broad disciplines down to narrow topics and retrieve individual publications helped the project leader both to understand topics and to find articles of interest. Thereby, this navigation improved the utility of the ACPLC. Nevertheless, interpretation of ACPLCs are challenging. This study has provided some insights into user needs and applicability of an ACPLC in practice. To my best knowledge this is the first study of this kind. Knowledge about users’ information needs is essential to evaluate and improve the usefulness of ACPLCs in a research management setting. Because of the low number of participants, no general conclusions can be made regarding the usefulness of the ACPLC. Further user studies are needed to evaluate the usefulness of ACPLCs and the interpretability of clusters in relation to information needs in universities.
EZmocks: extending the Zel'dovich approximation to generate mock galaxy catalogues with accurate clustering statistics
Creators: name: Chuang, Chia-Hsun
name: Kitaura, Francisco-Shu
name: Prada, Francisco
name: Zhao, Cheng
name: Yepes, Gustavo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a new methodology to generate mock halo or galaxy catalogues, which have accurate clustering properties, nearly indistinguishable from full $N$-body solutions, in terms of the one-point, two-point, and three-point statistics. In particular, the agreement is remarkable, within $1\%$ up to $k=0.55$ $h$Mpc$^{-1}$ and down to $r=10$ $h^{-1}$Mpc, for the power spectrum and two-point correlation function respectively, while the bispectrum agrees in general within $20\%$ for different scales and shapes. Our approach is based on the Zel'dovich approximation, however, effectively including with the simple prescriptions the missing physical ingredients, and stochastic scale-dependent, non-local and nonlinear biasing contributions. The computing time and memory required to produce one mock is similar to that using the log-normal model. With high accuracy and efficiency, the effective Zel'dovich approximation mocks (EZmocks) provide a reliable and practical method to produce massive mock galaxy catalogues for the analysis of large-scale structure measurements.
description: 8 pages, 6 figures, matches the version accepted by MNRAS
Additional file 1 of Trends in mortality in septic patients according to the different organ failure during 15 years
Creators: name: Lorencio Cárdenas, Carolina
name: Yébenes, Juan Carlos
name: Vela, Emili
name: Clèries, Montserrat
name: Sirvent, Josep Mª
name: Fuster-Bertolín, Cristina
name: Reina, Clara
name: Rodríguez, Alejandro
name: Ruiz-Rodríguez, Juan Carlos
name: Trenado, Josep
name: Esteban Torné, Elisabeth
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1. ICD‑9‑MC codes used to identify infectious process, site of infection, acute organ dysfunction and procedures used in intensive care unit.
The Son of Man overthrows Babylon and builds the eschatological temple in fulfillment of Cyrus’s Decree : Matthew 28:18–20’s combined allusions to OG Daniel 4:14(17), OG Daniel 7:13–14, and 2 Chronicles 36:23
Creators: name: Van Tine, Robert Jarrett
Publisher: name: The University of St Andrews
Year: 2023
Subjects: subject: Old Greek Daniel
subject: Gospel of Matthew
subject: Book of Daniel
subject: Chronicles
subject: Intertextuality
subject: Allusion
subject: Great Commission
subject: Matthew 28:16-20
subject: Daniel 7:13-14
subject: Daniel 7:13
subject: Daniel 7:14
subject: Son of Man
subject: Babylon
subject: Nebuchadnezzar
subject: Jesus
subject: Gospels
subject: Satan
subject: Semiotics
subject: Temple
subject: Cultic restoration
subject: Restoration
subject: Rebuilt temple
subject: Jerusalem
subject: Zion
subject: Zionism
subject: Eschatology
subject: Matthean
subject: BS2575.52V2
subject: Bible. Matthew--Criticism, interpretation, etc.
subject: Bible. Daniel--Criticism, interpretation, etc.
subject: Intertextuality

description: The focus of this study is the Great Commission (Matthew 28:18–20). I argue that Matthew here combines allusions to Old Greek (OG) Daniel 4:14(17), OG Daniel 7:14, and 2 Chronicles 36:23. The possibility of these connections in Matt 28:18–20 is occasionally touched on by scholars; yet allusions to OG Dan 4:14(17) and/or 2 Chron 36:23 almost never receive sustained attention. Moreover, the significance of Matthew’s use of the OG version of Daniel in particular is not considered. In contrast, this thesis looks in detail at the combined allusion as well as its significance, especially its use of OG Daniel, for Matthew as a whole. I argue that the literary effect of the combined allusions in 28:18–20 is to present Jesus as the OG Danielic Son of Man whose heavenly kingdom is associated with the establishment of the eschatological temple, now shown to be Jesus’s disciples (i.e. the ekklesia). In so doing, Matthew presents the disciple-making mission as simultaneously fulfilling the OG Danielic eschatological vision of the defeat of the king/dom of Babylon and bringing to completion Cyrus’s Decree from 2 Chronicles 36:23 to rebuild the temple. My thesis thus stands at the center of a confluence of lacunae in multiple fields. Within Matthean studies, it engages gaps in relation to the Gospel’s cultic restoration eschatology, use of a specific version of Daniel, and use of Chronicles. I also focus extensively on the form and message of OG Daniel—which has likewise been overlooked—in order to show its use and significance throughout Matthew and particularly in Matt 28:18–20. Finally, by drawing attention to the use of multiple texts in Matt 28:18–20, I engage a literary phenomenon that is only recently beginning to receive attention within the broader field of New Testament studies—composite allusion.
A concentration inequality for product spaces
Creators: name: Dodos, Pandelis
name: Kanellopoulos, Vassilis
name: Tyros, Konstantinos
Publisher: name: arXiv
Year: 2014
Subjects: subject: Probability (math.PR)
subject: Combinatorics (math.CO)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: We prove a concentration inequality which asserts that, under some mild regularity conditions, every random variable defined on the product of sufficiently many probability spaces exhibits pseudorandom behavior.
Lebesgue measure theory and integration theory on non-archimedean real closed fields with archimedean value group
Creators: name: Kaiser, Tobias
Publisher: name: arXiv
Year: 2014
Subjects: subject: Logic (math.LO)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 03C64, 03H05, 06F20, 12J25, 14P10, 28B15, 28E05, 32B20

description: Given a non-archimedean real closed field with archimedean value group which contains the reals, we establish for the category of semialgebraic sets and functions a full Lebesgue measure and integration theory such that the main results from the classical setting hold. The construction involves methods from model theory, o-minimal geometry and valuation theory. We set up the construction in such a way that it is determined by a section of the valuation. If the value group is isomorphic to the group of rational numbers the construction is uniquely determined up to isomorphism. The range of the measure and integration is obtained in a controled and tame way from the real closed field we start with. The main example is given by the case of the field of Puiseux series where the range is the polynomial ring in one variable over this field.
description: Final version; to appear at the Proceedings of the London Mathematical Society
A Framework for Using Machine Learning to Support Qualitative Data Coding
Creators: name: Baumgartner, Peter
name: Smith, Amanda
Publisher: name: Zenodo
Year: 2020

description: Open-ended survey questions provide qualitative data that are useful for a multitude of reasons. These data can help survey researchers add depth or nuance to quantitative findings and can also be used to better understand phenomena before drafting future measures. However, qualitative data analysis is labor intensive, and researchers often lack the needed time and resources to take full advantage of the benefits these data can provide. As a result, open-ended questions are often underutilized in analysis of survey data, or even omitted entirely from surveys. To address these issues, we evaluated a method to support qualitative analysis using machine learning to auto-code open-ended survey responses. Specifically, we used human-coded qualitative data from an open-ended question on a 2018 employee survey to train a model that predicted codes to apply to data from the same question on the 2019 survey. The model employed transfer learning and followed BERT machine learning architecture. The model-predicted codes were adjudicated by human coders well-versed in the code definitions and coding structure. During the adjudication process each coded response was reviewed to ensure predicted codes were accurate and complete. Precision (i.e., of the predicted codes, what percent were correct) and recall (i.e., of the codes that should have been applied, what percent were predicted) were calculated for each code to determine the accuracy of coding predictions. We found precision values for the 24 codes in the coding frame ranged from 88% to 98% (95.6% overall), with recall ranging from 56% to 94% (81.5% overall). The majority of codes had precision and recall values above 90%. Results suggest this is a promising approach that can be used to support traditional coding methods and has the potential to alleviate some of the burden associated with qualitative data analysis.
The Use of Geospatial Intelligence by Young People in Environmental Preservation and Observation of Climate Changes
Creators: name: Ambrósio, Abraão
name: Atella, Bruno
name: Guedes, Camilla
name: Iriart, Danielle
name: Natal Costa, Gabriela
name: Vieira, Luiza
name: Silva, Margarida
Publisher: name: Zenodo
Year: 2023
Subjects: Geointelligence
Climate Change
Youth

description: The main objective of this article is to understand which are the uses of geospatial intelligence, its importance and impact in the context of climate change and how geospatial technologies and their use by youth groups can help humans to predict consequences and create strategies on how to deal with the threat of environmental issues and the degradation of the planet Earth. That said, it was sought to present which existing technologies for the analysis of changes, as well as what these changes are and which studies have already been carried out in this area so that it is possible to reduce the environmental impacts. It was also aimed to understand what is the role of young people not only in the environmental issue but also in the development of technologies related to this and how their participation is important for issues related to the future and innovation. This way, from an analysis of concepts and a case study, it was possible to understand more about geospatial intelligence and its primordial role in the preservation of the environment. However, it was concluded that there is still much to be done and that there is a relevant impact of the use of geointelligence to the point of being a differential for the planet.
description: GIRI-hub is a Research Lab, and is part of the LusoGlobe Centre, Lusófona University.
Cell tracking of convective rainfall: sensitivity of climate-change signal to tracking algorithm and cell definition (Cell-TAO v1.0)
Creators: name: Meredith, Edmund P.
name: Ulbrich, Uwe
name: Rust, Henning W.
Publisher: name: Freie Universität Berlin
Year: 2023
Subjects: subject: Lagrangian analysis
subject: convective precipitation
subject: cell tracking
subject: 500 Naturwissenschaften und Mathematik::550 Geowissenschaften, Geologie::551 Geologie, Hydrologie, Meteorologie

description: Lagrangian analysis of convective precipitation involves identifying convective cells (“objects”) and tracking them through space and time. The Lagrangian approach helps to gain insight into the physical properties and impacts of convective cells and, in particular, how these may respond to climate change. Lagrangian analysis requires both a fixed definition of what constitutes a convective object and a reliable tracking algorithm. Whether the climate-change signals of various object properties are sensitive to the choice of tracking algorithm or to how a convective object is defined has received little attention. Here we perform ensemble pseudo-global-warming experiments at a convection-permitting resolution to test this question. Using two conceptually different tracking algorithms, Lagrangian analysis is systematically repeated with different thresholds for defining a convective object, namely minimum values for object area, intensity and lifetime. It is found that the threshold criteria for identifying a convective object can have a strong and statistically significant impact on the magnitude of the climate-change signal, for all analysed object properties. The tracking method, meanwhile, has no impact on the climate-change signal as long as the precipitation data have a sufficiently high temporal resolution: in general, the lower the minimum permitted object size is, the higher the precipitation data's temporal resolution must be. For the case considered in our study, these insights reveal that irrespective of the tracking method, projected changes in the characteristics of convective rainfall vary considerably between cells of differing intensity, area and lifetime.
Additional file 1 of Syndecan-4 as a genetic determinant of the metabolic syndrome
Creators: name: Crocco, Paolina
name: Vecchie, Denise
name: Gopalkrishna, Sreejit
name: Dato, Serena
name: Passarino, Giuseppe
name: Young, Martin E.
name: Nagareddy, Prabhakara R.
name: Rose, Giuseppina
name: De Luca, Maria
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Supplementary Material 1
Space ethics to test directed panspermia
Creators: name: Makukov, Maxim A.
name: shCherbak, Vladimir I.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Popular Physics (physics.pop-ph)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The hypothesis that Earth was intentionally seeded with life by a preceding extraterrestrial civilization is believed to be currently untestable. However, analysis of the situation where humans themselves embark on seeding other planetary systems motivated by survival and propagation of life reveals at least two ethical issues calling for specific solutions. Assuming that generally intelligence evolves ethically as it evolves technologically, the same considerations might be applied to test the hypothesis of directed panspermia: if life on Earth was seeded intentionally, the two ethical requirements are expected to be satisfied, what appears to be the case.
description: 6 pages. Accepted in Life Sciences in Space Research. Keywords: astrobiology, directed panspermia, SETI, genetic code, space ethics. Version 3: some links updated
Understanding microbiome dynamics via interpretable graph representation learning
Creators: name: Melnyk, Kateryna
name: Weimann, Kuba
name: Conrad, Tim O. F.
Publisher: name: Freie Universität Berlin
Year: 2023
Subjects: subject: Applied mathematics
subject: Computer science
subject: Microbiology
subject: FOS: Biological sciences
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie

description: Large-scale perturbations in the microbiome constitution are strongly correlated, whether as a driver or a consequence, with the health and functioning of human physiology. However, understanding the difference in the microbiome profiles of healthy and ill individuals can be complicated due to the large number of complex interactions among microbes. We propose to model these interactions as a time-evolving graph where nodes represent microbes and edges are interactions among them. Motivated by the need to analyse such complex interactions, we develop a method that can learn a low-dimensional representation of the time-evolving graph while maintaining the dynamics occurring in the high-dimensional space. Through our experiments, we show that we can extract graph features such as clusters of nodes or edges that have the highest impact on the model to learn the low-dimensional representation. This information is crucial for identifying microbes and interactions among them that are strongly correlated with clinical diseases. We conduct our experiments on both synthetic and real-world microbiome datasets.
Homological stability for automorphism groups
Creators: name: Wahl, Nathalie
name: Randal-Williams, Oscar
Publisher: name: arXiv
Year: 2014
Subjects: subject: Algebraic Topology (math.AT)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: Given a family of groups admitting a braided monoidal structure (satisfying mild assumptions) we construct a family of spaces on which the groups act and whose connectivity yields, via a classical argument of Quillen, homological stability for the family of groups. We show that stability also holds with both polynomial and abelian twisted coefficients, with no further assumptions. This new construction of a family of spaces from a family of groups recovers known spaces in the classical examples of stable families of groups, such as the symmetric groups, general linear groups and mapping class groups. By making systematic the proofs of classical stability results, we show that they all hold with the same type of coefficient systems, obtaining in particular without any further work new stability theorems with twisted coefficients for the symmetric groups, braid groups, automorphisms of free groups, unitary groups, mapping class groups of non-orientable surfaces and mapping class groups of 3-manifolds. Our construction can also be applied to families of groups not considered before in the context of homological stability. As a byproduct of our work, we construct the braided analogue of the category FI of finite sets and injections relevant to the present context, and define polynomiality for functors in the context of pre-braided monoidal categories.
description: v2: Major revision. Stability with abelian coefficient systems added as well as new examples. Added coauthor. v3: minor revision. v4: Final version, to appear in Advances in Math
Concordance homomorphisms from knot Floer homology
Creators: name: Ozsvath, Peter
name: Stipsicz, Andras
name: Szabo, Zoltan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57R58, 57M25

description: We modify the construction of knot Floer homology to produce a one-parameter family of homologies for knots in the three-sphere. These invariants can be used to give homomorphisms from the smooth concordance group to the integers, giving bounds on the four-ball genus and the concordance genus of knots. We give some applications of these homomorphisms.
description: Minor revision, corrected typos and added explanation to Chapter 8
On a class of biorthogonal polynomials on the unit circle
Creators: name: Borrego-Morell, J.
name: Rafaeli, F. R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 42C05, 33C05, 33C45

description: A system of biorthogonal polynomials with respect to a complex valued measure supported on the unit circle is considered and all the terms with bounds are explicitly given for the remainder of an asymptotic formula given by R. Askey for this system. An electrostatic interpretation for the zeros of a class of para-orthogonal polynomials associated with the biorthogonal system is also considered.
A radiomics-based model to classify the etiology of liver cirrhosis using gadoxetic acid-enhanced MRI
Creators: name: Elkilany, Aboelyazid
name: Fehrenbach, Uli
name: Auer, Timo Alexander
name: Müller, Tobias
name: Schöning, Wenzel
name: Hamm, Bernd
name: Geisel, Dominik
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2021
Subjects: subject: liver cirrhosis
subject: radiomics-based model
subject: etiology
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: The implementation of radiomics in radiology is gaining interest due to its wide range of applications. To develop a radiomics-based model for classifying the etiology of liver cirrhosis using gadoxetic acid-enhanced MRI, 248 patients with a known etiology of liver cirrhosis who underwent 306 gadoxetic acid-enhanced MRI examinations were included in the analysis. MRI examinations were classified into 6 groups according to the etiology of liver cirrhosis: alcoholic cirrhosis, viral hepatitis, cholestatic liver disease, nonalcoholic steatohepatitis (NASH), autoimmune hepatitis, and other. MRI examinations were randomized into training and testing subsets. Radiomics features were extracted from regions of interest segmented in the hepatobiliary phase images. The fivefold cross-validated models (2-dimensional-(2D) and 3-dimensional-(3D) based) differentiating cholestatic cirrhosis from noncholestatic etiologies had the best accuracy (87.5%, 85.6%), sensitivity (97.6%, 95.6%), predictive value (0.883, 0.877), and area under curve (AUC) (0.960, 0.910). The AUC was larger in the 2D-model for viral hepatitis, cholestatic cirrhosis, and NASH-associated cirrhosis (P-value of 0.05, 0.05, 0.87, respectively). In alcoholic cirrhosis, the AUC for the 3D model was larger (P=0.01). The overall intra-class correlation coefficient (ICC) estimates and their 95% confident intervals (CI) for all features combined was 0.68 (CI 0.56-0.87) for 2D and 0.71 (CI 0.61-0.93) for 3D measurements suggesting moderate reliability. Radiomics-based analysis of hepatobiliary phase images of gadoxetic acid-enhanced MRI may be a promising noninvasive method for identifying the etiology of liver cirrhosis with better performance of the 2D- compared with the 3D-generated models.
A general notion of coherent systems
Creators: name: Schmitt, Alexander H. W.
Publisher: name: Freie Universität Berlin
Year: 2022
Subjects: subject: Coherent system
subject: moduli space
subject: geometric invariant theory
subject: semistability
subject: linearization
subject: ampleness
subject: 500 Naturwissenschaften und Mathematik::510 Mathematik::510 Mathematik

description: We look at coherent systems for decorated vector bundles and propose a notion of semistability. In the special case of tensor powers, we will examine this notion more closely. In particular, we will construct moduli spaces with the help of geometric invariant theory. It is an interesting aspect that ampleness of the linearization in the geometric invariant theory construction yields a bound on the stability parameter for coherent systems.
On the Number of RF Chains and Phase Shifters, and Scheduling Design with Hybrid Analog-Digital Beamforming
Creators: name: Bogale, Tadilo Endeshaw
name: Le, Long Bao
name: Haghighat, Afshin
name: Vandendorpe, Luc
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: This paper considers hybrid beamforming (HB) for downlink multiuser massive multiple input multiple output (MIMO) systems with frequency selective channels. For this system, first we determine the required number of radio frequency (RF) chains and phase shifters (PSs) such that the proposed HB achieves the same performance as that of the digital beamforming (DB) which utilizes $N$ (number of transmitter antennas) RF chains. We show that the performance of the DB can be achieved with our HB just by utilizing $r_t$ RF chains and $2r_t(N-r_t + 1)$ PSs, where $r_t \leq N$ is the rank of the combined digital precoder matrices of all sub-carriers. Second, we provide a simple and novel approach to reduce the number of PSs with only a negligible performance degradation. Numerical results reveal that only $20-40$ PSs per RF chain are sufficient for practically relevant parameter settings. Finally, for the scenario where the deployed number of RF chains $(N_a)$ is less than $r_t$, we propose a simple user scheduling algorithm to select the best set of users in each sub-carrier. Simulation results validate theoretical expressions, and demonstrate the superiority of the proposed HB design over the existing HB designs in both flat fading and frequency selective channels.
description: IEEE Transactions on Wireless Communications (Minor Revision)
Digging for unspecified information requirements: a case study of Digital Library of Arne Novák users
Creators: name: Martinková, Pavla
name: Lorenz, Michal
Publisher: name: Zenodo
Year: 2020
Subjects: information requirements
research information practices
research platforms
sense-making analysis
DARIAH-CZ
Digital Library of Arne Novák

description: Abstract Surveying the information needs of users is already a key issue in the preparatory phase of the research infrastructures. In this phase the integration of research platforms is being prepared. A research of information requirements of digital scholars is not limited only by the difficulty of reaching users, but also because of the lack of transparent platform architecture, log data cannot be used effectively. Users of platforms are often happy to get access to data and resources relevant to their research. They consider most of their work to be abstract, intellectual, or simply of such nature that computer and information technology cannot help them. Thus, many needs are not transformed into requirements, nor are they perceived as needs. In order to identify the unconscious demands of users and to find the potential for improving the research platform, we decided to make a sense-making analysis of five researchers who use the Digital library of Arne Novák in their research. Digital library of Arne Novák is a research platform providing access to the work of a prominent figure in Czech literary science, that we want to make available to the DARIAH-CZ research infrastructure. A micro time-line interview was conducted with all researchers to understand how researchers use research platform, how they interact and practice research with digital data and how we can shape a vision of augmentation of human intellectual possibilities when working with this platform. The research verified that in this way we can identify unnamed and unspecified information requirements of research data users.
No quantum realization of extremal no-signaling boxes
Creators: name: Ramanathan, Ravishankar
name: Tuziemski, Jan
name: Horodecki, Michał
name: Horodecki, Paweł
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Pure states are very important in any theory since they represent states of maximal information about the system within the theory. Here, we show that no non-trivial (not local realistic) extremal states (boxes) of general no-signaling theories can be realized within quantum theory. We then explore three interesting consequences of this fact. Firstly, since the pure states are uncorrelated from the environment, the statement forms a no-go result against the most straightforward device-independent protocol for randomness or secure key generation against general no-signaling adversaries. It also leads to the interesting question whether all non-extremal boxes allow for non-local correlations with the adversary. Secondly, in addition to the fact that new information-theoretic principles (designed to pick out the set of quantum correlations from among all non signaling ones) can in consequence be tested on arbitrary non-local vertices to check their validity, it also allows the possibility of excluding from the quantum set any box of no-signaling correlations that can be distilled to a non-local vertex. Finally, it also forms a sufficient condition to identify non-local games with no quantum winning strategy, when one can show that the game has a single unique non-signaling winning strategy. We illustrate each of these consequences with the example of generalized Popescu-Rohrlich boxes.
description: 8 pages
A Plataforma UI Greenmetric e a Sustentabilidade na UFRJ 2022
Creators: name: Cézar Vieira da Silva Junior, Ricardo
name: Bilotta, Patricia
Publisher: name: Zenodo
Year: 2023

description: Este livro traça um panorama da participação da Universidade Federal do Rio de Janeiro no ranking Greenmetric (UIGM) de 2022. Os dados sobre a sustentabilidade da instituição foram coletados e divididos em seis quesitos principais, que são apresentados de forma detalhada neste e-book. O registro dos dados sustentáveis baseado na metodologia do UIGM é de extrema importância para a mensuração dos resultados da política ambiental da UFRJ, de acordo com o Plano de Logística Sustentável, uma vez que a análise individual dos seis quesitos permite que os gestores identifiquem as áreas fragilizadas e concentrem os esforços diretamente nestes campos.
 
Este livro digital é parte integrante da dissertação apresentada ao Programa de Pós-Graduação em Desenvolvimento Local (PPGDL), do Centro Universitário Augusto Motta (UNISUAM), na categoria de PRODUTO TÉCNICO BIBLIOGRÁFICO.
SIGLEC1 (CD169): a marker of active neuroinflammation in the brain but not in the blood of multiple sclerosis patients
Creators: name: Ostendorf, Lennard
name: Dittert, Philipp
name: Biesen, Robert
name: Duchow, Ankelien
name: Stiglbauer, Victoria
name: Ruprecht, Klemens
name: Bellmann-Strobl, Judith
name: Seelow, Dominik
name: Stenzel, Werner
name: Niesner, Raluca A.
name: Hauser, Anja E.
name: Paul, Friedemann
name: Radbruch, Helena
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2021
Subjects: subject: SIGLEC1
subject: biomarker in multiple sclerosis
subject: (CD169)
subject: Neuromyelitis optica spectrum disorder (NMOSD)
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: We aimed to evaluate SIGLEC1 (CD169) as a biomarker in multiple sclerosis (MS) and Neuromyelitis optica spectrum disorder (NMOSD) and to evaluate the presence of SIGLEC1(+) myeloid cells in demyelinating diseases. We performed flow cytometry-based measurements of SIGLEC1 expression on monocytes in 86 MS patients, 41 NMOSD patients and 31 healthy controls. Additionally, we histologically evaluated the presence of SIGLEC1(+) myeloid cells in acute and chronic MS brain lesions as well as other neurological diseases. We found elevated SIGLEC1 expression in 16/86 (18.6%) MS patients and 4/41 (9.8%) NMOSD patients. Almost all MS patients with high SIGLEC1 levels received exogenous interferon beta as an immunomodulatory treatment and only a small fraction of MS patients without interferon treatment had increased SIGLEC1 expression. In our cohort, SIGLEC1 expression on monocytes was-apart from those patients receiving interferon treatment-not significantly increased in patients with MS and NMOSD, nor were levels associated with more severe disease. SIGLEC1(+) myeloid cells were abundantly present in active MS lesions as well as in a range of acute infectious and malignant diseases of the central nervous system, but not chronic MS lesions. The presence of SIGLEC1(+) myeloid cells in brain lesions could be used to investigate the activity in an inflammatory CNS lesion.
title: Original web dramas and Chinese subscription video-on-demand services: patterns and benefits
Creators: name: Zeng, Jing
Publisher: name: University of Glasgow
Year: 2024

description: Subscription video-on-demand (SVOD) services not only serve as new distribution channels for television content but also transform industry practices and protocols. This study focuses on three leading services in China – IQIYI, Youku, and Tencent Video –to understand how they established themselves and how they are reshaping the existing drama industry. The study proposes three main research questions that explore the reasons why Chinese SVOD services invest in original drama production, how these investments impact the production and distribution of dramas, and what strategic implications arise from these changes. The study spans the fields of TV studies, strategic management, production, and distribution. It seeks to enhance understanding of industrial practices in the Chinese SVOD industry and builds upon existing theories, which have primarily focused on US-based SVOD services.

The study involved semi-structured in-depth interviews with 24 practitioners and utilised document analysis for triangulation. It reveals that Chinese SVOD services primarily invest in original drama productions to enhance cost efficiency, secure market power and resources, and build brands and ecosystems. In terms of content production, audience fragmentation, datafication, and regulation are highlighted as major factors influencing creative decisions. Chapter 6 shows that Chinese SVOD services prioritise ‘time delay’ as the core strategy to maximise income from advertisers and subscribers and develop more flexible scheduling strategies than those used in television. The 'online-first' strategy dominates domestically, with overseas distribution increasingly synchronised with domestic releases. Chapter 7 argues that Chinese SVOD services complement traditional television rather than replace it. The study also considers how these services promote the 'industrialisation' of drama production, outlines the ‘logics’ of their advertiser-supported model, confirms the of platformisation on content production, and examines potential power asymmetry issues.
Multi-Class Source-Channel Coding
Creators: name: Bocharova, Irina E.
name: Fàbregas, Albert Guillén i
name: Kudryashov, Boris D.
name: Martinez, Alfonso
name: Campo, Adrià Tauste
name: Vazquez-Vilar, Gonzalo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences
subject: E.4
subject: 94A05

description: This paper studies an almost-lossless source-channel coding scheme in which source messages are assigned to different classes and encoded with a channel code that depends on the class index. The code performance is analyzed by means of random-coding error exponents and validated by simulation of a low-complexity implementation using existing source and channel codes. While each class code can be seen as a concatenation of a source code and a channel code, the overall performance improves on that of separate source-channel coding and approaches that of joint source-channel coding when the number of classes increases.
description: Published in the IEEE Transactions on Information Theory
Fractional elliptic equations, Caccioppoli estimates and regularity
Creators: name: Caffarelli, L. A.
name: Stinga, P. R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Analysis of PDEs (math.AP)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: Let $L=-\operatorname{div}_x(A(x)\nabla_x)$ be a uniformly elliptic operator in divergence form in a bounded domain $Ω$. We consider the fractional nonlocal equations $$\begin{cases} L^su=f,&\hbox{in}~Ω,\\ u=0,&\hbox{on}~\partialΩ, \end{cases}\quad \hbox{and}\quad \begin{cases} L^su=f,&\hbox{in}~Ω,\\ \partial_Au=0,&\hbox{on}~\partialΩ. \end{cases}$$ Here $L^s$, $0
description: 37 pages
Predicting lethal courses in critically ill COVID-19 patients using a machine learning model trained on patients with non-COVID-19 viral pneumonia
Creators: name: Lichtner, Gregor
name: Balzer, Felix
name: Haufe, Stefan
name: Giesa, Niklas
name: Schiefenhövel, Fridtjof
name: Schmieding, Malte
name: Jurth, Carlo
name: Kopp, Wolfgang
name: Akalin, Altuna
name: Schaller, Stefan J.
name: Weber-Carstens, Steffen
name: Spies, Claudia
name: Dincklage, Falk Von
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2021
Subjects: subject: critically ill COVID-19 patients
subject: machine learning model
subject: pandemic
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: In a pandemic with a novel disease, disease-specific prognosis models are available only with a delay. To bridge the critical early phase, models built for similar diseases might be applied. To test the accuracy of such a knowledge transfer, we investigated how precise lethal courses in critically ill COVID-19 patients can be predicted by a model trained on critically ill non-COVID-19 viral pneumonia patients. We trained gradient boosted decision tree models on 718 (245 deceased) non-COVID-19 viral pneumonia patients to predict individual ICU mortality and applied it to 1054 (369 deceased) COVID-19 patients. Our model showed a significantly better predictive performance (AUROC 0.86 [95% CI 0.86-0.87]) than the clinical scores APACHE2 (0.63 [95% CI 0.61-0.65]), SAPS2 (0.72 [95% CI 0.71-0.74]) and SOFA (0.76 [95% CI 0.75-0.77]), the COVID-19-specific mortality prediction models of Zhou (0.76 [95% CI 0.73-0.78]) and Wang (laboratory: 0.62 [95% CI 0.59-0.65]; clinical: 0.56 [95% CI 0.55-0.58]) and the 4C COVID-19 Mortality score (0.71 [95% CI 0.70-0.72]). We conclude that lethal courses in critically ill COVID-19 patients can be predicted by a machine learning model trained on non-COVID-19 patients. Our results suggest that in a pandemic with a novel disease, prognosis models built for similar diseases can be applied, even when the diseases differ in time courses and in rates of critical and lethal courses.
title: An assessment of the impacts of space heating electrification and future space cooling in the buildings of UK
Creators: name: Zhang, Meng
Publisher: name: University of Glasgow
Year: 2024

description: This thesis provides a comprehensive examination of the space heating and cooling demand modelling in the UK, linking crucial issues in energy policy with the practicalities of demand forecasting. At its core, the research develops a cohesive methodology that marries the deterministic accuracy of physical models with the predictive agility of ANNs, setting a new standard for energy demand estimation. The research marks a departure from conventional methods, embracing advanced modelling techniques that enhance the prediction and management of energy requirements.

Key findings from this integrated approach reveal that the UK's transition to a decarbonised heating sector will significantly increase electricity demand, highlighting the essential role of energy storage in reducing pressure on the power grid. The work demonstrates that precise and expedient modelling is crucial for providing robust data support to energy policymakers and operators, helping to create quick and well-informed energy strategies. Moreover, the thesis conducts a comprehensive analysis of future cooling demands and the corresponding requirements for diverse cooling technologies. In doing so, it charts potential scenarios for cooling equipment needs, preparing stakeholders for shifts in consumer demand patterns. Additionally, the thesis delves into the performance of neural networks within the context of energy prediction, illustrating their efficacy and potential to transform the landscape of energy demand forecasting.

Through this investigation, the thesis contributes to a nuanced understanding of energy demand, aiding the development of energy policies and infrastructures that are not only sustainable but also adaptive to the pressing demands of climate change and technological evolution. This work lays a foundational blueprint for future research initiatives aimed at optimising energy systems and underscores the importance of integrating varied modelling techniques to achieve greater accuracy and efficiency in energy demand forecasting.
Chiral anomaly for V-A fields in four- and six-dimensional curved space
Creators: name: Yajima, S.
name: Eguchi, K.
name: Fukuda, M.
name: Oka, T.
name: Taira, H.
name: Yamashita, S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The chiral U(1) anomalies associated with a fermion of spin 1/2 interacting with nonabelian vector and axial-vector fields in four- and six-dimensional curved space are given in tensorial form.
description: 7 pages
Data and R code for 'Speed and space' (Taremaa & Kopecka)
Creators: name: Taremaa, Piia
name: Kopecka, Anetta
Publisher: name: University of Tartu
Year: 2022
Subjects: linguistics
corpus data
motion
speed
space
multivariate analysis
Estonian

description: Data and statistical code used in the paper "Speed and space: semantic asymmetries in motion descriptions in Estonian" (accepted by the Cognitive Linguistics 2022)
Viscoelastic testing reveals normalization of the coagulation profile 12 weeks after severe COVID-19
Creators: name: Magomedov, Abakar
name: Zickler, Daniel
name: Karaivanov, Stoyan
name: Kurreck, Annika
name: Münch, Frédéric H.
name: Kamhieh-Milz, Julian
name: Ferse, Caroline
name: Kahl, Andreas
name: Piper, Sophie K.
name: Eckardt, Kai-Uwe
name: Dörner, Thomas
name: Kruse, Jan Matthias
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2021
Subjects: subject: Viscoelastic testing
subject: COVID-19
subject: coagulation profile
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: COVID 19 is associated with a hypercoagulable state and frequent thromboembolic complications. For how long this acquired abnormality lasts potentially requiring preventive measures, such as anticoagulation remains to be delineated. We used viscoelastic rotational thrombelastometry (ROTEM) in a single center cohort of 13 critical ill patients and performed follow up examinations three months after discharge from ICU. We found clear signs of a hypercoagulable state due to severe hypofibrinolysis and a high rate of thromboembolic complications during the phase of acute illness. Three month follow up revealed normalization of the initial coagulation abnormality and no evidence of venous thrombosis in all thirteen patients. In our cohort the coagulation profile was completely normalized three months after COVID-19. Based on these findings, discontinuation of anticoagulation can be discussed in patients with complete venous reperfusion.