cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
An Inverse Problems Approach to Pulse Wave Analysis in the Human Brain
Creators: name: Weissinger, Lukas
name: Hubmer, Simon
name: Ramlau, Ronny
name: Voss, Henning Uwe
Publisher: name: arXiv
Year: 2024
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 47J06, 65J22, 65J20, 47A52

description: Cardiac pulsations in the human brain have received recent interest due to their possible role in the pathogenesis of neurodegenerative diseases. Further interest stems from their possible application as an endogenous signal source that can be utilized for brain imaging in general. The (pulse-)wave describing the blood flow velocity along an intracranial artery consists of a forward (anterograde) and a backward (retrograde, reflected) part, but measurements of this wave usually consist of a superposition of these components. In this paper, we provide a mathematical framework for the inverse problem of estimating the pulse wave velocity, as well as the forward and backward component of the pulse wave separately from MRI measurements on intracranial arteries. After a mathematical analysis of this problem, we consider possible reconstruction approaches, and derive an alternate direction approach for its solution. The resulting methods provide estimates for anterograde/retrograde wave forms and the pulse wave velocity under specified assumptions on a cerebrovascular model system. Numerical experiments on simulated and experimental data demonstrate the applicability and preliminary in vivo feasibility of the proposed methods.
description: 31 pages, 11 figures
Infinite-time Average of Local Fields in an Integrable Quantum Field Theory after a Quantum Quench
Creators: name: Mussardo, Giuseppe
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The infinite-time average of the expectation values of local fields of any interacting quantum theory after a global quench process are key quantities for matching theoretical and experimental results. For quantum integrable field theories, we show that they can be obtained by an ensemble average that employs a particular limit of the Form Factors of local fields and quantities extracted by the Generalized Bethe Ansatz.
description: 11 pages, 2 figures, to appear in Physical Review Letters
Untitled Item
Creators: name: Sudeep B Chandramana
name: Kuruvilla, Noel Mariya
name: Saju, Rini
name: Swetha Ramesh
Publisher: name: figshare
Year: 2020
Subjects: subject: 150309 Logistics and Supply Chain Management
subject: FOS: Economics and business
subject: 130203 Economics, Business and Management Curriculum and Pedagogy
subject: FOS: Educational sciences

description: Green logistics is an important element of production system in today’s business. It blends several efforts to quantify and control the environmental impact of production activities in an enterprise. This research is intended to emphasize upon the ways by which organizations can accomplish positive ecological effects by modifying their logistics practices, thereby moving towards the goals of sustainable development. The study also appraises an account of green logistics practices in the present Indian business environment. This paper presents a study on the different dimensions of green logistics, challenges faced by companies in pursuing it and proposes strategies, by analysing the alternatives for green practices along with organizational objectives.
City networks’ power in global agri-food systems
Creators: name: Partzsch, Lena
name: Lümmen, Jule
name: Löhr, Anne-Cathrine
Publisher: name: Freie Universität Berlin
Year: 2022
Subjects: subject: Agriculture
subject: City networks
subject: Fairtrade
subject: Food
subject: Organic
subject: Power
subject: 300 Sozialwissenschaften::320 Politikwissenschaft::320 Politikwissenschaft

description: Cities and local governments loom large on the sustainability agenda. Networks such as Fair Trade Towns International (FTT) and the Organic Cities Network aim to bring about global policy change from below. Given the new enthusiasm for local approaches, it seems relevant to ask to what extent local groups exercise power and in what form. City networks present their members as “ethical places” exercising power with, rather than power over others. The article provides an empirical analysis of the power of FTT and Organic Cities in Germany. In both cases, we found cities that are eager to emphasize their inclusive potential. Their willingness to compromise is demonstrated most illustratively by the fact that several cities are members of both networks: While the FTT campaign aims to address problems of international trade but does not abandon it, Organic Cities advocate for a new localism based on food supply from farmers in the same region. In both cases, city networks use their purchasing power to increase the share of certified products. By doing so, the city networks reproduce privileged positions of consumers benefitting from the global capitalist order (power over). However, our analysis revealed that networks also make citizens reflect upon agri-food challenges and allow developing alternatives for more sustainable systems (power with).
Revealing Relationships among Relevant Climate Variables with Information Theory
Creators: name: Knuth, Kevin H.
name: Gotera, Anthony
name: Curry, Charles T.
name: Huyser, Karen A.
name: Wheeler, Kevin R.
name: Rossow, William B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: A primary objective of the NASA Earth-Sun Exploration Technology Office is to understand the observed Earth climate variability, thus enabling the determination and prediction of the climate's response to both natural and human-induced forcing. We are currently developing a suite of computational tools that will allow researchers to calculate, from data, a variety of information-theoretic quantities such as mutual information, which can be used to identify relationships among climate variables, and transfer entropy, which indicates the possibility of causal interactions. Our tools estimate these quantities along with their associated error bars, the latter of which is critical for describing the degree of uncertainty in the estimates. This work is based upon optimal binning techniques that we have developed for piecewise-constant, histogram-style models of the underlying density functions. Two useful side benefits have already been discovered. The first allows a researcher to determine whether there exist sufficient data to estimate the underlying probability density. The second permits one to determine an acceptable degree of round-off when compressing data for efficient transfer and storage. We also demonstrate how mutual information and transfer entropy can be applied so as to allow researchers not only to identify relations among climate variables, but also to characterize and quantify their possible causal interactions.
description: 14 pages, 5 figures, Proceedings of the Earth-Sun System Technology Conference (ESTC 2005), Adelphi, MD
Entanglement Microscopy: Tomography and Entanglement Measures via Quantum Monte Carlo
Creators: name: Wang, Ting-Tung
name: Song, Menghan
name: Lyu, Liuke
name: Witczak-Krempa, William
name: Meng, Zi Yang
Publisher: name: arXiv
Year: 2024
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We employ a protocol, dubbed entanglement microscopy, to reveal the multipartite entanglement encoded in the full reduced density matrix of microscopic subregion both in spin and fermionic many-body systems. We exemplify our method by studying the phase diagram near quantum critical points (QCP) in 2 spatial dimensions: the transverse field Ising model and a Gross-Neveu-Yukawa transition of Dirac fermions. Our main results are: i) the Ising QCP exhibits short-range entanglement with a finite sudden death of the LN both in space and temperature; ii) the Gross-Neveu QCP has a power-law decaying fermionic LN consistent with conformal field theory (CFT) exponents; iii) going beyond bipartite entanglement, we find no detectable 3-party entanglement with our two witnesses in a large parameter window near the Ising QCP in 2d, in contrast to 1d. We further establish the singular scaling of general multipartite entanglement measures at criticality, and present an explicit analysis in the tripartite case. We also analytically obtain the large-temperature power-law scaling of the fermionic LN for general interacting systems. Entanglement microscopy opens a rich window into quantum matter, with countless systems waiting to be explored.
description: 10+10 pages, 4+12 figures
The concept of legal space: A topological approach to addressing multiple legalities
Creators: name: Burchardt, Dana
Publisher: name: Freie Universität Berlin
Year: 2022
Subjects: subject: legal space
subject: legal order
subject: topology
subject: interlegality
subject: legal pluralism
subject: 300 Sozialwissenschaften::340 Recht::340 Recht

description: The notion of legal space is increasingly being used to address the challenges of multiple and overlapping spheres of legality that the notion of legal order cannot capture. This article shows how legal space can serve as an alternative (or at least complementary) concept to legal order in view of the limitations of the latter. It sketches out a notion of legal space that is inspired by topology, an approach that analyses the qualitative nature of spaces. It is concerned with understanding the ways in which legalities interact, rather than with ‘measuring’ their spatial dimensions. A topology-inspired approach to legal space can contribute to conceptualizing, in a novel manner, the inner structure of legal spaces, the boundaries of these spaces and their interrelations with other spaces. It offers an analytical toolkit for better understanding multiple legalities, providing categories to characterize sets of legal elements as well as phenomena such as overlaps and hybridity. It is conceptually less constrained than the concept of legal order, and thus allows us to address various bodies of law ranging from classical domestic law, EU law and international law to global administrative law, corporate social responsibility law, platform law and lex sportiva.
Age-dependent rise in IFN-γ competence undermines effective type 2 responses to nematode infection
Creators: name: Kapse, Bhavya
name: Zhang, Hongwei
name: Affinass, Nicole
name: Ebner, Friederike
name: Hartmann, Susanne
name: Rausch, Sebastian
Publisher: name: Freie Universität Berlin
Year: 2022
Subjects: subject: type 2 immune responses
subject: helminth infection
subject: nematode infection
subject: 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche

description: The efficient induction of type 2 immune responses is central to the control of helminth infections. Previous studies demonstrated that strong Th1 responses driven by intracellular pathogens as well as a bias for type 1 activity in senescent mice impedes the generation of Th2 responses and the control of intestinal nematode infections. Here, we show that the spontaneous differentiation of Th1 cells and their expansion with age restrains type 2 immunity to infection with the small intestinal nematode H. polygyrus much earlier in life than previously anticipated. This includes the more extensive induction of IFN-γ competent, nematode-specific Th2/1 hybrid cells in BALB/c mice older than three months compared to younger animals. In C57BL/6 mice, Th1 cells accumulate more rapidly at steady state, translating to elevated Th2/1 differentiation and poor control of parasite fitness in primary infections experienced at a young age. Blocking of early IFN-γ and IL-12 signals during the first week of nematode infection leads to sharply decreased Th2/1 differentiation and promotes resistance in both mouse lines. Together, these data suggest that IFN-γ competent, type 1 like effector cells spontaneously accumulating in the vertebrate host progressively curtail the effectiveness of anti-nematode type 2 responses with rising host age.
Contribution of Indian Handloom Industry in Fashion Business: An Atmanirbhar Bharat perspective
Creators: name: Sudeep B Chandramana
name: Adithya R Nair
Publisher: name: figshare
Year: 2020
Subjects: subject: 130203 Economics, Business and Management Curriculum and Pedagogy
subject: FOS: Educational sciences
subject: 150314 Small Business Management
subject: FOS: Economics and business
subject: 150503 Marketing Management (incl. Strategy and Customer Relations)
subject: 150604 Tourism Marketing
subject: 150504 Marketing Measurement
subject: 120503 Housing Markets, Development, Management
subject: FOS: Social and economic geography

description: India’s textiles sector is one of the longstanding industries in the Indian economy, dating back to many centuries. Along with the skills of weavers, the Indian handloom industry exhibits the richness and diversity of Indian culture. Indian handloom products are famous for their unique designs and elegance. Government of India’s ‘Atmanirbhar Bharat’ programme, the ‘vocal for local’ campaign, together with ‘Make in India’, presents a huge opportunity to the handloom sector to further strengthen the Indian positioning in the global textiles space. This article is about the nature and characteristics of Indian handloom industry and its opportunities to emerge as a prominent part of fashion industry, in relation to the above campaigns. The study identifies the progressive path to realise the idea of a ‘Self-reliant India’ is to mix old designs with new techniques and create original fashion products for the global market. It also illustrates a few success stories of Indian handloom fashion brands in the form of short caselets.
On the Age Calibration of Open Clusters using Red Clump Stars
Creators: name: Chriss, Abigail R.
name: Worthey, Guy
Publisher: name: arXiv
Year: 2024
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In this study, we extend the dust-independent Hatzidimitriou (1991) relation between cluster age and $d_{B-R}$ color difference between the red giant branch (RGB) and red clump to younger cluster ages. We perform membership analysis on fourteen galactic open clusters using Gaia DR3 astrometry, then compute the difference in color of the RGB and red clump $d_{B-R}$ using Gaia photometry. We also compute $d_{B-R}$ for five fields surrounding Small Magellanic Cloud (SMC) clusters. We find that the trend derived from older clusters does not extrapolate to younger ages and becomes double-valued. We confirm that $d_{B-R}$ is independent of metallicity. Current stellar evolutionary isochrones do not quantitatively reproduce the trend and furthermore predict an increased color gap with a decrease in metallicity that is not echoed in the data. Integrated light models based on current isochrones exaggerate the color change over the $-0.5 <$ [Fe/H] $< 0$ interval at the few-percent level.
description: 12 pages, 12 figures
Exploring the evolution of structure growth in the universe with field-fluid interactions through dynamical stability analysis
Creators: name: Chatterjee, Anirban
name: Bandyopadhyay, Abhijit
name: Majumdar, Debasish
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate an interacting quintessence dark energy - dark matter scenario and its impact on structure formation by analyzing the evolution of scalar perturbations. The interaction is introduced by incorporating a non-zero source term into the continuity equations of the two sectors (with opposite signs), modeled as $\bar{Q}_0 \equiv α\barρ_{\rm m}(H + κ\dotϕ)$. The coupling parameter $α$ and the parameter $λ$ involved in quintessence potential $V(ϕ) = V_0e^{-λκϕ}$, play crucial roles in governing the dynamics of evolution examined within the present framework. The cosmic evolution, within this context, is depicted as a first-order autonomous system of equations involving appropriately chosen dynamical variables. We analyzed the associated stability characteristics and growth rate of perturbations and obtained domains in the ($α-λ$) parameter space for which fixed points can exhibit stable and non-phantom accelerating solutions. Depending on its magnitude, the coupling parameter $α$ has the potential to change the characteristics of certain critical points, altering them from attractors to repellers. This model effectively captures the evolutionary features of the universe across its various phases at both the background and perturbation levels. The issue of cosmic coincidence can also be addressed within the framework of this model. We also observed that for a moderate strength of coupling, the growth rate of matter perturbation extends into the distant future.
description: 27 pages, 2 tables and 8 figures. Latest version has been accepted for publication in European Physical Journal C
Effects of perfluoroalkyl and polyfluoroalkyl substances (PFAS) on soil structure and function
Creators: name: Xu, Baile
name: Yang, Gaowen
name: Lehmann, Anika
name: Riedel, Sebastian
name: Rillig, Matthias C.
Publisher: name: Freie Universität Berlin
Year: 2023
Subjects: subject: Litter decomposition
subject: Soil respiration
subject: Water-stable aggregates
subject: Soil microbial abundance
subject: Perfluorobutanesulfonic acid (PFBS)
subject: Perfluorooctanesulfonic acid (PFOS)
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie

description: Soils are impacted globally by several anthropogenic factors, including chemical pollutants. Among those, perfluoroalkyl and polyfluoroalkyl substances (PFAS) are of concern due to their high environmental persistence, and as they might affect soil structure and function. However, data on impacts of PFAS on soil structure and microbially-driven processes are currently lacking. This study explored the effects of perfluorooctanesulfonic acid (PFOS), perfluorooctanoic acid (PFOA) and perfluorobutanesulfonic acid (PFBS) at environmental-relevant concentrations on soil health, using a 6-week microcosm experiment. PFAS (even at 0.5 ng g−1 for PFBS) significantly increased litter decomposition, associated with positive effects on β-glucosidase activities. This effect increased with PFAS concentrations. Soil pH was significantly increased, likely as a direct consequence of increased litter decomposition affected by PFAS. Soil respiration was significantly inhibited by PFAS in week 3, while this effect was more variable in week 6. Water-stable aggregates were negatively affected by PFOS, possibly related to microbial shifts. PFAS affected soil bacterial and fungal abundance, but not microbial and certain enzyme activities. Our work highlights the potential effects of PFAS on soil health, and we argue that this substance class could be a factor of environmental change of potentially broad relevance in terrestrial ecosystem functioning.
Active Information Gathering for Long-Horizon Navigation Under Uncertainty by Learning the Value of Information
Creators: name: Arnob, Raihan Islam
name: Stein, Gregory J.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: We address the task of long-horizon navigation in partially mapped environments for which active gathering of information about faraway unseen space is essential for good behavior. We present a novel planning strategy that, at training time, affords tractable computation of the value of information associated with revealing potentially informative regions of unseen space, data used to train a graph neural network to predict the goodness of temporally-extended exploratory actions. Our learning-augmented model-based planning approach predicts the expected value of information of revealing unseen space and is capable of using these predictions to actively seek information and so improve long-horizon navigation. Across two simulated office-like environments, our planner outperforms competitive learned and non-learned baseline navigation strategies, achieving improvements of up to 63.76% and 36.68%, demonstrating its capacity to actively seek performance-critical information.
description: Submitted at IROS'24. arXiv admin note: text overlap with arXiv:2307.14501
Thermodynamic arrow of time of quantum projective measurements
Creators: name: Yi, Juyeon
name: Kim, Beom Jun
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate a thermodynamic arrow associated with quantum projective measurements in terms of the Jensen-Shannon divergence between the probability distribution of energy change caused by the measurements and its time reversal counterpart. Two physical quantities appear to govern the asymptotic values of the time asymmetry. For an initial equilibrium ensemble prepared at a high temperature, the energy fluctuations determine the convergence of the time asymmetry approaching zero. At low temperatures, finite survival probability of the ground state limits the time asymmetry to be less than $\ln 2$. We illustrate our results for a concrete system and discuss the fixed point of the time asymmetry in the limit of infinitely repeated projections.
description: 6 pages in two columns, 1 figure, to appear in EPL
Spin in an arbitrary gravitational field
Creators: name: Obukhov, Yuri N.
name: Silenko, Alexander J.
name: Teryaev, Oleg V.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the quantum mechanics of a Dirac fermion on a curved spacetime manifold. The metric of the spacetime is completely arbitrary, allowing for the discussion of all possible inertial and gravitational field configurations. In this framework, we find the Hermitian Dirac Hamiltonian for an arbitrary classical external field (including the gravitational and electromagnetic ones). In order to discuss the physical content of the quantum-mechanical model, we further apply the Foldy-Wouthuysen transformation, and derive the quantum equations of motion for the spin and position operators. We analyse the semiclassical limit of these equations and compare the results with the dynamics of a classical particle with spin in the framework of the standard Mathisson-Papapetrou theory and in the classical canonical theory. The comparison of the quantum mechanical and classical equations of motion of a spinning particle in an arbitrary gravitational field shows their complete agreement.
description: 26 pages, no figures, Revtex
Theory of Multimode Squeezed Light Generation in Lossy Media
Creators: name: Kopylov, Denis A.
name: Meier, Torsten
name: Sharapova, Polina R.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: A unified theoretical approach to describe the properties of multimode squeezed light generated in a lossy medium is presented. This approach is valid for Markovian environments and includes both a model of discrete losses based on the beamsplitter approach and a generalized continuous loss model based on the spatial Langevin equation. For an important class of Gaussian states, we derive master equations for the second-order correlation functions and illustrate their solution for both frequency-independent and frequency-dependent losses. Studying the mode structure, we demonstrate that in a lossy environment no broadband basis without quadrature correlations between the different broadband modes exists. Therefore, various techniques and strategies to introduce broadband modes can be considered. We show that the Mercer expansion and the Williamson-Euler decomposition do not provide modes in which the maximal squeezing contained in the system can be measured. In turn, we find a new broadband basis that maximizes squeezing in the lossy system and present an algorithm to construct it.
description: 24 pages, 7 figures
Main Aims Evaluation Project (Project #1 of 2)
Creators: name: Lindgren, Kristen P.
name: Baldwin, Scott
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences
subject: Medicine and Health Sciences
subject: Psychiatry and Psychology
subject: Psychology
subject: FOS: Psychology

description: The purpose of the present project is to specify, in advance, hypotheses and a detailed plan for conducting analyses of our recently completed study. This study aimed to evaluate narrative writing about a future possible self as a potential way to shift drinking identity (i.e., the extent to which one implicitly and explicitly identifies as a drinker) and reduce hazardous drinking among college students. The study is a registered clinical trial -- ClinicalTrials.gov Identifier: NCT03889873 and is Study 2 of R01 AA024732, funded by NIAAA. The clinical trial had a 2 (lower risk drinker vs. person who uses smart phone less) x 2 (writing in 1st vs. 3rd person) x 2 (specifically instructed to write about social network vs. not) design. Due to the relatively large number of outcomes, we envision two manuscripts. The first manuscript will describe the results of the trial on all primary outcomes over time as well as key related secondary outcomes. The second manuscript will have a process focus (i.e., how do key variables shift over the course of the three experimental sessions) and will thus describe the results of secondary and “other” outcomes. This registration is for the FIRST manuscript.
Unacknowledged and missed cases of sexual victimization: A comparison of responses to broad versus behaviorally specific questions
Creators: name: Marchewka, Juliette
name: Tomaszewska, Paulina
name: Schuster, Isabell
name: Krahé, Barbara
Publisher: name: Freie Universität Berlin
Year: 2022
Subjects: subject: Germany
subject: rape
subject: Sexual Aggression and Victimization Scale
subject: sexual assault
subject: sexual victimization
subject: unacknowledged victims
subject: 100 Philosophie und Psychologie::150 Psychologie::150 Psychologie

description: From the beginning of systematic research on sexual victimization, it has been recognized that a substantial proportion of women report nonconsensual sexual experiences meeting the defining criteria of rape in response to behaviorally specific items, but do not acknowledge their experience as rape in response to broad questions about whether they have ever been raped. Recent studies suggest that rates of unacknowledged rape may be as high or even higher among men than among women. This study examined rates of unacknowledged female and male victims of rape and sexual assault by comparing responses to behaviorally specific items of the Sexual Aggression and Victimization Scale (SAV‐S) with responses to broad questions using the labels of sexual assault and rape (SARA) in 593 participants (303 women) in Germany. As predicted, more women and men were classified as rape victims based on behaviorally specific items than on the basis of the broad rape item. The rates of unacknowledged rape were about 60% for women and 75% for men. The gender difference was not significant. Against our prediction, no significant differences in acknowledgement of sexual assault were found in relation to coercive strategy and victim–perpetrator relationship. Few cases of rape and sexual assault identified by the SARA items were missed by the behaviorally specific questions. The implications for establishing prevalence rates of rape and sexual assault and for comparing victims and nonvictims in terms of vulnerability factors and outcomes of sexual victimization are discussed.
Linked Open Research Data for Social Science - A concept registry for granular data documentation
Creators: name: Nebelin, Jana
name: Siegers, Pascal
name: Kern, Dagmar
name: May, Antonia
name: Momeni, Fakhri
name: Daniel, Andreas
name: Zapilko, Ben
name: Saalbach, Claudia
name: Wenzig, Knut
name: Goebel, Jan
Publisher: name: Zenodo
Year: 2023

description: The re-use of research data is an integral part of research practice in the social and economic sciences. To find relevant data, researchers need adequate search facilities. However, a comprehensive, thematic search for research data is difficult because of inconsistent or absent indexing at the social science concept level. Either the data is not documented at a granular level, or primary investigators use their ad-hoc terminology to describe their data. From the user's perspective, the lack of theory language in data documentation impedes effective data searches and thus significantly limits the research potential of existing data collections. Because there is currently no semantic model for indexing the data content, the specific challenge for improving data search lies in establishing concept-based indexing of research data. Research infrastructures need technology for the harmonized semantic indexing of their data. The LORD concept registry aims at closing this gap by developing a registry of sociological and economic concepts and, following the FAIR principles, making this concept registry generally available to the scientific community. As a first step, we developed a basic data model for the Concept Registry using United Modeling Language (UML). All links between are created and managed in the form of so-called RDF triples. An annotation application allows for linking questions/variables to concepts. The application also includes the two SKOS-compliant thesauri, "Thesaurus Social Sciences" (TheSoz) and "Standard Thesaurus Economics" (STW) but could be extended to other resources like ELSST.
 We illustrate the application of the LORD concept registry with examples from three large-scale survey programmes (German Socio-Economic Panel, German General Social Survey, National Academics Panel Study). The initial focus is on variables and questions with overlapping content in the three survey programmes, as they form a sound basis for cross-linking with concepts.
Low-Rank Variational Quantum Algorithm for the Dynamics of Open Quantum Systems
Creators: name: Santos, Sara
name: Song, Xinyu
name: Savona, Vincenzo
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The simulation of many-body open quantum systems is key to solving numerous outstanding problems in physics, chemistry, material science, and in the development of quantum technologies. Near-term quantum computers may bring considerable advantage for the efficient simulation of their static and dynamical properties, thanks to hybrid quantum-classical variational algorithms to approximate the dynamics of the density matrix describing the quantum state in terms of an ensemble average. Here, a variational quantum algorithm is developed to simulate the real-time evolution of the density matrix governed by the Lindblad master equation, under the assumption that the quantum state has a bounded entropy along the dynamics, entailing a low-rank representation of its density matrix. The algorithm encodes each pure state of the statistical mixture as a parametrized quantum circuit, and the associated probabilities as additional variational parameters stored classically, thereby requiring a significantly lower number of qubits than algorithms where the full density matrix is encoded in the quantum memory. Two variational Ansätze are proposed, and their effectiveness is assessed in the simulation of the dynamics of a 2D dissipative transverse field Ising model. The results underscore the algorithm's efficiency in simulating the dynamics of open quantum systems in the low-rank regime with limited quantum resources on a near-term quantum device.
description: 27 pages, 14 figures
Molecular Gas Properties of the Giant Molecular Cloud Complexes in the Arms and Inter-arms of the Spiral Galaxy NGC 6946
Creators: name: Topal, Selcuk
name: Bayet, Estelle
name: Bureau, Martin
name: Davis, Timothy A.
name: Walsh, Wilfred
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Combining observations of multiple CO lines with radiative transfer modeling is a very powerful tool to investigate the physical properties of the molecular gas in galaxies. Using new observations as well as literature data, we provide the most complete CO ladders ever generated for eight star-forming regions in the spiral arms and inter-arms of the spiral galaxy NGC 6946, with observations of the CO(1-0), CO(2-1), CO(3-2), CO(4-3), CO(6-5), 13CO(1-0) and 13CO(2-1) transitions. For each region, we use the large velocity gradient assumption to derive beam-averaged molecular gas physical properties, namely the gas kinetic temperature (T_K), H2 number volume density n(H2) and CO number column density N(CO). Two complementary approaches are used to compare the observations with the model predictions: chi-square minimisation and likelihood. The physical conditions derived vary greatly from one region to the next: T_K=10-250 K, n(H2)=10^2.3-10^7.0 cm^-3 and N(CO)=10^15.0-10^19.3 cm^-2. The spectral line energy distribution (SLED) of some of these extranuclear regions indicates a star-formation activity that is more intense than that at the centre of our own Milky Way. The molecular gas in regions with a large SLED turnover transition (J_max>4) is hot but tenuous with a high CO column density, while that in regions with a low SLED turnover transition (J_max<=4) is cold but dense with a low CO column density. We finally discuss and find some correlations between the physical properties of the molecular gas in each region and the presence of young stellar population indicators (supernova remnants, HII regions, HI holes, etc.)
description: 23 pages, 11 figures, MNRAS, Accepted
Direct detection of Light Anapole and Magnetic Dipole DM
Creators: name: Del Nobile, Eugenio
name: Gelmini, Graciela B.
name: Gondolo, Paolo
name: Huh, Ji-Haeng
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present comparisons of direct detection data for "light WIMPs" with an anapole moment interaction (ADM) and a magnetic dipole moment interaction (MDM), both assuming the Standard Halo Model (SHM) for the dark halo of our galaxy and in a halo-independent manner. In the SHM analysis we find that a combination of the 90% CL LUX and CDMSlite limits or the new 90% CL SuperCDMS limit by itself exclude the parameter space regions allowed by DAMA, CoGeNT and CDMS-II-Si data for both ADM and MDM. In our halo-independent analysis the new LUX bound excludes the same potential signal regions as the previous XENON100 bound. Much of the remaining signal regions is now excluded by SuperCDMS, while the CDMSlite limit is much above them. The situation is of strong tension between the positive and negative search results both for ADM and MDM. We also clarify the confusion in the literature about the ADM scattering cross section.
description: 20 pages, 6 figures. v2: updated with CoGeNT 2014 data, 1 figure added. v3: updated with SuperCDMS 2014 data, version accepted by JCAP
Bright ultra-broadband fiber-based biphoton source
Creators: name: Smirnov, Maksim A.
name: Fedotov, Ilya V.
name: Smirnova, Anastasia M.
name: Khairullin, Albert F.
name: Fedotov, Andrei B.
name: Moiseev, Sergey A.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In this Letter, we report a first experimental realization of bright ultra-broadband (180 THz) fiber-based biphoton source with widely spectrally separated signal and idler photons. Such a two-photon source is realized due to the joint use of broadband phase-matching of interacting light waves and high optical nonlinearity of a silica-core photonic crystal fiber. The high performance of the developed fiber source identifies it as an important and useful tool for a wide range of optical quantum applications.
Uncovering the Invisible: A Study of Gaia18ajz, a Candidate Black Hole Revealed by Microlensing
Creators: name: Howil, K.
name: Wyrzykowski, Ł.
name: Kruszyńska, K.
name: Zieliński, P.
name: Bachelet, E.
name: Gromadzki, M.
name: Mikołajczyk, P. J.
name: Kotysz, K.
name: Jabłońska, M.
name: Kaczmarek, Z.
name: Mróz, P.
name: Ihanec, N.
name: Ratajczak, M.
name: Pylypenko, U.
name: Rybicki, K.
name: Sweeney, D.
name: Hodgkin, S. T.
name: Larma, M.
name: Carrasco, J. M.
name: Burgaz, U.
name: Godunova, V.
name: Simon, A.
name: Cusano, F.
name: Jelinek, M.
name: Štrobl, J.
name: Hudec, R.
name: Merc, J.
name: Kučáková, H.
name: Erece, O.
name: Kilic, Y.
name: Olivares, F.
name: Morrell, M.
name: Wicker, M.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Identifying black holes is essential for comprehending the development of stars and uncovering novel principles of physics. Gravitational microlensing provides an exceptional opportunity to examine an undetectable population of black holes in the Milky Way. In particular, long-lasting events are likely to be associated with massive lenses, including black holes. We present an analysis of the Gaia18ajz microlensing event, reported by the Gaia Science Alerts system, which has exhibited a long timescale and features indicative of the annual microlensing parallax effect. Our objective is to estimate the parameters of the lens based on the best-fitting model. We utilized photometric data obtained from the Gaia satellite and terrestrial observatories to investigate a variety of microlensing models and calculate the most probable mass and distance to the lens, taking into consideration a Galactic model as a prior. Subsequently, weapplied a mass-brightness relation to evaluate the likelihood that the lens is a main sequence star. We also describe the DarkLensCode (DLC), an open-source routine which computes the distribution of probable lens mass, distance and luminosity employing the Galaxy priors on stellar density and velocity for microlensing events with detected microlensing parallax. We modelled Gaia18ajz event and found its two possible models with most likely Einstein timescale of $316^{+36}_{-30}$ days and $299^{+25}_{-22}$ days. Applying Galaxy priors for stellar density and motion, we calculated the most probable lens mass of $4.9^{+5.4}_{-2.3} M_\odot$ located at $1.14^{+0.75}_{-0.57}\,\text{kpc}$ or $11.1^{+10.3}_{-4.7} M_\odot$ located at $1.31^{+0.80}_{-0.60}\,\text{kpc}$. Our analysis of the blended light suggests that the lens is likely a dark remnant of stellar evolution, rather than a main sequence star.
Effective Action and Field Equation for BEC from Weak to Strong Couplings
Creators: name: Kleinert, H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: While free and weakly interacting nonrelativistic particles are described by a Gross-Pitaevskii equation, which is a nonlinear self-interacting Schrödinger equation, the phenomena in the strong- coupling limit are governed by an effective action that is extremized by a double-fractional generalization of this equation. Its particle orbits perform Lèvy walks rather than Gaussian random walks.
Prevalence of Candida species in Psoriasis
Creators: name: Elsner, Kevin
name: Holstein, Julia
name: Hilke, Franz Joachim
name: Blumenstock, Gunnar
name: Walker, Birgit
name: Schmidt, Sybille
name: Schaller, Martin
name: Ghoreschi, Kamran
name: Meier, Katharina
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2021
Subjects: subject: Candida albicans
subject: Candida species
subject: candidiasis
subject: interleukin-17
subject: interleukin-17 inhibitors
subject: prevalence
subject: psoriasis
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: Background: Psoriasis patients are more frequently colonised with Candida species. The correlation between fungal colonisation and clinical severity is unclear, but may exacerbate psoriasis and the impact of antipsoriatic therapies on the prevalence of Candida is unknown. Objectives: To examine the prevalence of C species in psoriasis patients compared to an age- and sex-matched control population, we investigated the influence of Candida colonisation on disease severity, immune cell activation and the interplay on psoriatic treatments. Methods: The prevalence of C species was examined in 265 psoriasis patients and 200 control subjects by swabs and stool samples for fungal cultures. Peripheral mononuclear blood cells (PBMCs) were collected from 20 fungal colonised and 24 uncolonised patients and stimulated. The expression of interferon (IFN)-γ, IL-17A, IL-22 and tumour necrosis factor (TNF)-α from stimulated PBMCs was measured by quantitative real-time polymerase chain reaction (qPCR). Results: A significantly higher prevalence for Candida was detected in psoriatic patients (p ≤ .001) compared to the control subjects; most abundant in stool samples, showing Candida albicans. Older participants (≥51 years) were more frequent colonised, and no correlation with gender, disease severity or systemic treatments like IL-17 inhibitors was found. Conclusions: Although Candida colonisation is significantly more common in patients with psoriasis, it does not influence the psoriatic disease or cytokine response. Our study showed that Candida colonisation is particularly more frequent in patients with psoriasis ≥51 years of age. Therefore, especially this group should be screened for symptoms of candidiasis during treatment with IL-17 inhibitors.
Area theorem for surface plasmons interacting with resonant atoms
Creators: name: Moiseev, Sergey A.
name: Kamli, Ali. A.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We show how the area theorem is applicable to the analytical description of the nonlinear interaction of surface plasmon modes with resonant two-level atoms. A closed analytical solution is obtained, which shows that surface plasmons can form long-propagating $2π$ pulses when interacting with an optically dense two-level atomic ensemble. The possible applications of the surface pulse area theorem and the conditions for the detection of $2π$ surface plasmon pulses are discussed.
Re-thinking HR Strategies for the Post-Covid Workplace
Creators: name: Sudeep B Chandramana
name: Thanuja Tytus
name: Shaji, Christina
name: Gregary Biju
Publisher: name: figshare
Year: 2020
Subjects: subject: 150305 Human Resources Management
subject: FOS: Economics and business
subject: 130203 Economics, Business and Management Curriculum and Pedagogy
subject: FOS: Educational sciences

description: All industries across the globe are going through challenging times because of the Covid-19 pandemic. Many organisations have initiated for scenario planning and are taking the required operational responses to ensure business continuity post-COVID-19. In this situation, there are a lot of issues faced by organisations in acquiring talents and managing human resources. Human Resource Management (HRM) functions are a vital part to the smooth operations in any organization. Every organisation is evolving in nature, hence for improving performance and productivity, change is inevitable. This study addresses the various issues faced at managing human resources in the post Covid-19 period. The descriptive study also analyses the changing role of human resource during these changing times and conclude with the possible strategies for better management of human resources.
title: Monthly variation of leaf litter Collembola in the tropical rainforest of Los Tuxtlas, Veracruz, Mexico
Creators: name: Palacios, José G.
name: Mejía, Blanca E.
name: Coates, Rosamond
name: Madora, Martha
name: Castaño, Gabriela
Publisher: name: SOIL ORGANISMS 90(3)
Year: 2018

description: Springtails | pitfall traps | seasonal variation | abundance
Optimal finite-time erasure of a classical bit
Creators: name: Zulkowski, Patrick R.
name: DeWeese, Michael R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Information erasure inevitably leads to heat dissipation. Minimizing this dissipation will be crucial for developing small-scale information processing systems, but little is known about the optimal procedures required. We have obtained closed-form expressions for maximally efficient erasure cycles for deletion of a classical bit of information stored by the position of a particle diffusing in a double-well potential. We find that the extra dissipation beyond the Landauer bound is proportional to the square of the Hellinger distance between the initial and final states divided by the cycle duration, which quantifies how far out of equilibrium the system is driven. Finally, we demonstrate close agreement between the exact optimal cycle and the protocol found using a linear response framework.
Echinostomatidae Looss 1899
Creators: name: Vieira, Fabiano M.
name: Luque, José L.
name: Muniz-Pereira, Luís C.
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Platyhelminthes
Trematoda
Plagiorchiida
Echinostomatidae

description: Family Echinostomatidae Looss, 1899   Baschkirovitrema incrassatum (Diesing, 1850)
 Pteronura brasiliensis (Gmelin), intestine, unspecified locality (Viana 1924; Thatcher 1993).
description: Published as part of Vieira, Fabiano M., Luque, José L. & Muniz-Pereira, Luís C., 2008, Checklist of helminth parasites in wild carnivore mammals from Brazil, pp. 1-23 in Zootaxa 1721 on page 14, DOI: 10.5281/zenodo.181136