cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Optical Signatures of Weyl Points in TaAs
Creators: name: Xu, B.
name: Dai, Y. M.
name: Zhao, L. X.
name: Wang, K.
name: Yang, R.
name: Zhang, W.
name: Liu, J. Y.
name: Xiao, H.
name: Chen, G. F.
name: Taylor, A. J.
name: Yarotski, D. A.
name: Prasankumar, R. P.
name: Qiu, X. G.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a systematic study of both the temperature and frequency dependence of the optical response in TaAs, a material that has recently been realized to host the Weyl semimetal state. Our study reveals that the optical conductivity of TaAs features a narrow Drude response alongside a conspicuous linear dependence on frequency. The width of the Drude peak decreases upon cooling, following a $T^{2}$ temperature dependence which is expected for Weyl semimetals. Two linear components with distinct slopes dominate the 5-K optical conductivity. A comparison between our experimental results and theoretical calculations suggests that the linear conductivity below $\sim$230~cm$^{-1}$ is a clear signature of the Weyl points lying in very close proximity to the Fermi energy.
description: 5 pages, 4 figures
title: Αστικός πράσινος βελονισμός και διαχείριση εξωτερικού περιβάλλοντος

title: Urban green acupuncture and outdoor environment managment
Creators: name: Τζανακακης Γεωργιος
Publisher: name: Technical University of Crete
Year: 2022

description: Η συνεχής καταπόνηση και υποβάθμιση του κλίματος τα τελευταία χρόνια με τα κέντρα να συγκεντρώνουν όλο και περισσότερο πληθυσμό, η διαρκής άνοδος της θερμοκρασίας αλλά και η ρύπναση του περιβάλλοντος δημιουργούν ανάγκες βιοκλιματικού σχεδιασμού και αειφόρου ανάπτυξης. Στην παρούσα διπλωματική εργασία θα εξετάσουμε πως πως με την εφαρμογή ψυχρών υλικών και βλάστησης στους εξωτερικούς χώρους των εστιών του Πολυτεχνείου, υπάρχει η δυνατότητα μείωσης της θερμοκρασίας και εξασφάλισης καλύτερων συνθηκών θερμικής άνεσης. Με την χρήση του λογισμικού μικροκλιματικής ανάλυσης Envi-met, αναλύονται οι τρόποι βελτίωσης συνθηκών του αστικού κλίματος μέσω τεχνικών σχεδιασμού και διαφορετικών παραμετρικών σεναρίων. Tα αποτελέσματα της μελέτης εστιάζουν στην επιφανειακή θερμοκρασία, την δυναμική θερμοκρασία, την σχετική υγρασία και την ταχύτητα του ανέμου, παράγοντες που διαμορφώνουν τις συνθήκες θερμικής άνεσης. Στο τέλος, βγήκαν συμπεράσματα σχετικά με τις παρεμβάσεις που εφαρμοστήκανε και μπορούν να βοηθήσουν στην περιβαλλοντική αναβάθμιση του χώρου μελέτης, ενώ επίσης και μελλοντικές έρευνες που θα μπορούν να πραγματοποιηθούν.
description: The continuous stress and degradation of the climate in recent years with the population gathering at the centrals, the constant rise in temperature and the pollution of the environment create the need for bioclimatic planning and sustainable development. In this thesis we will examine that by applying cool materials and vegetation to the exteriors of the dormitories, there could be a possibility to reduce the temperature and ensure better thermal comfort conditions. Using the microclimate analysis software Envi-met, ways of improving urban climate conditions through planning techniques and different parametric scenarios are analysed. The results of the study focus on surface temperature, potential air temperature, relative humidity and wind speed, factors that can shape living conditions. In the end, conclusions were made about the interventions that implemented and can help in the environmental upgrading of the study area, and also future research that can be carried out.
Effectiveness of telemedicine in reducing psychiatric patients’ appointment no-show rate compared with traditional in-person visits
Creators: name: Ilo, Pius
Publisher: name: No Publisher Supplied
Year: 2022

description: Purpose of Project: To evaluate the effectiveness of telemedicine in reducing psychiatric patients’ appointment no-show rate compared with traditional in-person visits. Methodology: Study Design: Retrospective study Methods: Retrospective review of de-identified patient data regarding appointment show rate on 300 patients records 6 months (April-September 2019) prior to telemedicine and during telemedicine (April –September 2020). Instruments: The project leader collaborated with the institution staff assigned by the Health System Executive Director, Behavioral Health Services in collecting and analyzing de-identified data.Sample Size: Deidentified data set on 300 patients.Population: Adults, ages 18-85 with psychiatric disorders Results: Appointment no-show rate decreased significantly from 17.17% during in-person visit to 8.77% via Telepsychiatry (A decrease by 8.4%). Mean appointment no-show rate during April-Sep 2019 (during in-person visit) = 0.1711. Mean appointment no-show rate during April-Sep 2020 (during telepsychiatry) = 0.0874. T-test analysis was utilized to compare the mean difference of the outcomes. T-test result = 12.554. P-value = 0.00000. Implication to Practice: Organizational Policy / Procedural: Telemedicine resulted in significant changes in institutional policies and management procedures such as hybrid treatment regimen; alternating in-person visit with telepsychiatry; flexible and hybrid providers work schedule. Economic: Organization revenue was notably increased due to the decreased in appointment no show rate as well as increased providers’ treatment capacity via telemedicine. There was a reduction in overall treatment cost. Patient: Access to mental health care and patient health outcomes were improved.General: Patient and provider’s exposure to Covid-19 infection was minimized via the use of telepsychiatry
Semiclassical Theory of Superresolution for Two Incoherent Optical Point Sources
Creators: name: Tsang, Mankei
name: Nair, Ranjith
name: Lu, Xiao-Ming
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Using a semiclassical model of photodetection with Poissonian noise and insights from quantum metrology, we prove that linear optics and photon counting can optimally estimate the separation between two incoherent point sources without regard to Rayleigh's criterion. The model is applicable to weak thermal or fluorescent sources as well as lasers.
description: v1: 2 pages, submitted to QCMC 2016. v2: An extended version titled "Quantum information for semiclassical optics" has been published in Proc. SPIE but cannot be posted here for copyright reasons. A copy of the published paper can be found at https://sites.google.com/site/mankeitsang/conferences
With string model to time series forecasting
Creators: name: Pinčák, Richard
name: Bartoš, Erik
Publisher: name: arXiv
Year: 2015
Subjects: subject: Statistical Finance (q-fin.ST)
subject: FOS: Economics and business

description: Overwhelming majority of econometric models applied on a long term basis in the financial forex market do not work sufficiently well. The reason is that transaction costs and arbitrage opportunity are not included, as this does not simulate the real financial markets. Analyses are not conducted on the non equidistant date but rather on the aggregate date, which is also not a real financial case. In this paper, we would like to show a new way how to analyze and, moreover, forecast financial market. We utilize the projections of the real exchange rate dynamics onto the string-like topology in the OANDA market. The latter approach allows us to build the stable prediction models in trading in the financial forex market. The real application of the multi-string structures is provided to demonstrate our ideas for the solution of the problem of the robust portfolio selection. The comparison with the trend following strategies was performed, the stability of the algorithm on the transaction costs for long trade periods was confirmed.
description: 13 figures, 2 tables. arXiv admin note: text overlap with arXiv:physics/0205053 by other authors
Microwave Surveillance based on Ghost Imaging and Distributed Antennas
Creators: name: Wang, Xiaopeng
name: Lin, Zihuai
Publisher: name: arXiv
Year: 2015
Subjects: subject: Applications (stat.AP)
subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this letter, we proposed a ghost imaging (GI) and distributed antennas based microwave surveillance scheme. By analyzing its imaging resolution and sampling requirement, the potential of employing microwave GI to achieve high-quality surveillance performance with low system complexity has been demonstrated. The theoretical analysis and effectiveness of the proposed microwave surveillance method are also validated via simulations.
description: 4 pages, 11 figures, submitted for possible journal publication
Mutated JAK2 signal transduction in human induced pluripotent stem cell (iPSC)-derived megakaryocytes
Creators: name: Pawinwongchai, Jaturawat
name: Jangprasert, Panchalee
name: Nilsri, Nungruthai
name: Israsena, Nipan
name: Rojnuckarin, Ponlapat
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Neuroscience
subject: Pharmacology
subject: Developmental Biology
subject: Cancer
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases

description: Janus kinase 2 (JAK2) gene mutations are the main drivers for polycythemia vera (PV) and essential thrombocythemia (ET). The mechanisms of single altered gene causing two different diseases are unclear. Additionally, novel treatments specifically targeting mutated JAK2 proteins are needed. In this study, the induced pluripotent stem cells (iPSCs) were virally transduced to express wild-type JAK2 (JAK2WT), JAK2p.V617F (JAK2V617F) or JAK2p.N542_E543del (JAK2exon12) under a doxycycline-inducible system. The modified iPSCs which were differentiated into megakaryocytes in the presence vs. absence of doxycycline were compared to ensure that the differences were solely from mutated JAK2 expressions. The JAK2V617-expressing iPSCs yielded significantly higher numbers of megakaryocytes consistent with the ET phenotype, while there was no enhancement by JAK2exon12 expression compatible with the pure erythrocytosis in humans. Capillary Western analyses revealed significantly greater JAK2 phosphorylation in iPSCs carrying JAK2V617F but not in JAK2WT and JAK2exon12 iPSCs. Activation of STAT3, STAT5 and AKT was increased by JAK2V617F, while they were decreased in JAK2exon12 iPSCs. Notably, interferon alpha and/or arsenic trioxide inhibited megakaryocytes proliferation and reduced JAK2, STAT3, STAT5 and AKT phosphorylation in mutant JAK2-expressing iPSCs compared with those without induction. In conclusion, JAK2V617F expression in iPSCs preferentially promoted megakaryocytes with a signaling profile distinctive from JAK2exon12 expression. Treatments with interferon alpha or arsenic trioxide preferentially suppressed the mutated over wild-type JAK2 signaling. This iPSC model is helpful in mechanistic studies and novel therapy screen for myeloproliferative neoplasm.
title: The impact and implications of virtual character expressiveness on learning and agent-learner interactions
Creators: name: Veletsianos, George
Publisher: name: Journal of Computer Assisted Learning
Year: 2009
Subjects: Computer-assisted instruction
Human-computer interaction

description: The possible benefits of agent expressiveness have been highlighted in previous literature; yet, the issue of verbal expressiveness has been left unexplored. I hypothesize that agent verbal expressiveness may improve the interaction between pedagogical agents and learners, ultimately enhancing learning outcomes. Evidence from a quasi-experimental investigation, indicates that learners who interacted with an expressive agent (a) scored higher on a post-task exam, and (b) rated the agent’s ability to interact higher, than learners who interacted with a non-expressive agent. Qualitative results provided insight into this finding, while indicating the complexity of deploying pedagogical agents in educational settings.
Supp files of "Image-based quantification of Arabidopsis thaliana stomatal aperture from leaf images"
Creators: name: Toda Yosuke Et Al.
Publisher: name: Zenodo
Year: 2023
Subjects: plant phenotyping stomata

description: Machine learning model weights and test images of the following article https://www.biorxiv.org/content/10.1101/2022.11.30.518467v1
title: Optimising agriculture for a changing climate: which farming practices confer stability of food production and farm income?
Creators: name: Harkness, Caroline
Publisher: name: University of Reading
Year: 2024

description: Food stability, described by the IPCC as the continuous availability and access to food without disruption, is one of the four pillars of food security. Extreme events and climatic variability can disrupt stability and are expected to increase due to climate change. Improving the stability of yields and farm income is identified as an important area of research. However, there remains few quantitative assessments examining the factors affecting stability of agricultural systems, particularly at the farm level. The main objectives of this thesis are to examine changes in the probability of adverse weather events across the UK in the 21st Century, as well as, examine the relative effect of climate variability, subsidies and farming practices on the stability of food production and farm income. The main aims are to provide knowledge on the impact of adverse weather on the stability of agriculture, now and in the future, and provide recommendations to improve stability in the context of a changing climate and more variable conditions. I used crop-climate modelling to examine changes in the frequency, magnitude and spatial patterns of adverse weather conditions throughout the UK during 21st century. I then analysed empirical data, using multilevel modelling, to examine the effects of farming practices, subsidies and climate variability on the stability of food production and income. Results demonstrate that climatic changes, in particular rainfall patterns, threaten agricultural production and the stability of agriculture. However, farming practices have a large effect on stability in comparison to climate. The three key aspects of farm management and policy identified to improve stability were: increasing agricultural diversity, increasing the efficiency of agrochemical use and agri-environmental management. These novel findings have important implications for adaptation and suggest that farmers, supported by policymakers, may have opportunities to improve stability in the face of more variable conditions.
S1R agonist modulates rat platelet eicosanoid synthesis and aggregation
Creators: name: Váczi, Sándor
name: Barna, L.
name: Harazin, A.
name: Mészáros, M.
name: Porkoláb, G.
name: Zvara, Á.
name: Ónody, R.
name: Földesi, I.
name: Veszelka, S.
name: Penke, B.
name: Fülöp, L.
name: Deli, M. A.
name: Mezei, Z.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: Hematology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Sigma-1 receptor (S1R) is detected in different cell types and can regulate intracellular signaling pathways. S1R plays a role in the pathomechanism of diseases and the regulation of neurotransmitters. Fluvoxamine can bind to S1R and reduce the serotonin uptake of neurons and platelets. We therefore hypothesized that platelets express S1R, which can modify platelet function. The expression of the SIGMAR1 gene in rat platelets was examined with a reverse transcription polymerase chain reaction and a quantitative polymerase chain reaction. The receptor was also visualized by immunostaining and confocal laser scanning microscopy. The effect of S1R agonist PRE-084 on the eicosanoid synthesis of isolated rat platelets and ADP- and AA-induced platelet aggregation was examined. S1R was detected in rat platelets both at gene and protein levels. Pretreatment with PRE-084 of resting platelets induced elevation of eicosanoid synthesis. The rate of elevation in thromboxane B2 and prostaglandin D2 synthesis was similar, but the production of prostaglandin E2 was higher. The concentration-response curve showed a sigmoidal form. The most effective concentration of the agonist was 2 µM. PRE-084 increased the quantity of cyclooxygenase-1 as detected by ELISA. PRE-084 also elevated the ADP- and AA-induced platelet aggregation. S1R of platelets might regulate physiological or pathological functions.
Deviations in expected price impact for small transaction volumes under fee restructuring
Creators: name: Harvey, Michael
name: Hendricks, Dieter
name: Gebbie, Tim
name: Wilcox, Diane
Publisher: name: arXiv
Year: 2016
Subjects: subject: Trading and Market Microstructure (q-fin.TR)
subject: FOS: Economics and business

description: We report on the occurrence of an anomaly in the price impacts of small transaction volumes following a change in the fee structure of an electronic market. We first review evidence for the existence of a master curve for price impact on the Johannesburg Stock Exchange (JSE). On attempting to re-estimate a master curve after fee reductions, it is found that the price impact corresponding to smaller volume trades is greater than expected relative to prior estimates for a range of listed stocks. We show that a master curve for price impact can be found following rescaling by an appropriate liquidity proxy, providing a means for practitioners to approximate price impact curves without onerous processing of tick data.
description: 11 pages, 13 figures
Closed analytical solutions of the d-dimensional Schrödinger equation with deformed Woods-Saxon potential plus double ring-shaped potential
Creators: name: Chabab, M.
name: Batoul, A. El
name: Oulne, M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Theory (nucl-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: By employing the Pekeris approximation, the D-dimensional Schrödinger equation is solved for the nuclear deformed Woods-Saxon potential plus double ring-shaped potential within the framework of the Asymptotic Iteration Method (AIM). The energy eingenvalues are given in a closed form and the corresponding normalized eigenfunctions are obtained in terms of hypergeometric functions. Our general results reproduce many predictions obtained in the literature, using the Nikiforov-Uvarov method (NU) and the Improved Quantization Rule approach, particulary those derived by considering Woods-Saxon potential without deformation and/or without ring shape interaction.
description: 17 pages, Latex, accepted in Zeitschrift f\"ur Naturforschung A (ZNA), 2015
Some properties of energy measures on Sierpinski gasket type fractals
Creators: name: Hino, Masanori
Publisher: name: arXiv
Year: 2015
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 28A80, 31C25, 60B20

description: We confirm, in a more general framework, a part of the conjecture posed by R. Bell, C.-W. Ho, and R. S. Strichartz [Energy measures of harmonic functions on the Sierpiński gasket, Indiana Univ. Math. J. 63 (2014), 831--868] on the distribution of energy measures for the canonical Dirichlet form on the two-dimensional standard Sierpinski gasket.
description: 17pages, 2figures
The parametric h-principle for minimal surfaces in $\mathbb R^n$ and null curves in $\mathbb C^n$
Creators: name: Forstneric, Franc
name: Larusson, Finnur
Publisher: name: arXiv
Year: 2016
Subjects: subject: Differential Geometry (math.DG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 53A10 (Primary), 30F99, 32E30, 32H02, 54C55, 55M15 (Secondary)

description: Let $M$ be an open Riemann surface. It was proved by Alarcón and Forstnerič (arXiv:1408.5315) that every conformal minimal immersion $M\to\mathbb R^3$ is isotopic to the real part of a holomorphic null curve $M\to\mathbb C^3$. In this paper, we prove the following much stronger result in this direction: for any $n\geq 3$, the inclusion $ι$ of the space of real parts of nonflat null holomorphic immersions $M\to\mathbb C^n$ into the space of nonflat conformal minimal immersions $M\to \mathbb R^n$ satisfies the parametric h-principle with approximation; in particular, it is a weak homotopy equivalence. We prove analogous results for several other related maps, and we describe the homotopy type of the space of all holomorphic immersions $M\to\mathbb C^n$. For an open Riemann surface $M$ of finite topological type, we obtain optimal results by showing that $ι$ and several related maps are inclusions of strong deformation retracts; in particular, they are homotopy equivalences.
description: Version 2: Added a description of the homotopy type of the space of all holomorphic immersions of the open Riemann surface M into C^n
Pathogenic mechanisms contributing to thrombocytopenia in patients with systemic lupus erythematosus
Creators: name: Pietto, M. Constanza Baroni
name: Lev, Paola R.
name: Glembotsky, Ana C.
name: Oyarzún, Cecilia P. Marín
name: Gomez, Graciela
name: Collado, Victoria
name: Pisoni, Cecilia
name: Gomez, Ramiro A.
name: Grodzielski, Matías
name: Gonzalez, Jacqueline
name: Mariño, Karina V.
name: Heller, Paula G.
name: Goette, Nora P.
name: Marta, Rosana F.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Pharmacology
subject: Ecology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Hematology

description: Systemic lupus erythematosus (SLE) is an autoimmune condition developing thrombocytopenia in about 10–15% of cases, however, mechanisms leading to low platelet count were not deeply investigated in this illness. Here we studied possible causes of thrombocytopenia, including different mechanisms of platelet clearance and impairment in platelet production. Twenty-five SLE patients with and without thrombocytopenia were included. Platelet apoptosis, assessed by measurement of loss of mitochondrial membrane potential, active caspase 3 and phosphatidylserine exposure, was found to increase in thrombocytopenic patients. Plasma from 67% SLE patients (thrombocytopenic and non-thrombocytopenic) induced loss of sialic acid (Ricinus communis agglutinin I and/or Peanut agglutinin binding) from normal platelet glycoproteins. Concerning platelet production, SLE plasma increased megakaryopoiesis (evaluated using normal human cord blood CD34+ hematopoietic progenitors), but inhibited thrombopoiesis (proplatelet count). Anti-platelet autoantibody depletion from SLE plasma reverted this inhibition. Overall, abnormalities were more frequently observed in thrombocytopenic than non-thrombocytopenic SLE patients and in those with active disease (SLEDAI≥5). In conclusion, platelet clearance due to apoptosis and desialylation, and impaired platelet production mainly due to inhibition of thrombopoiesis, could be relevant mechanisms leading to thrombocytopenia in SLE. These findings could provide a rational basis for the choice of proper therapies to correct platelet counts in these patients.
Moving toward Dual-Language Approaches: A Potential Solution to Achievement Gaps for Newly-Arrived Hispanic Students
Creators: name: Cardoza, Jose
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018

description: This quantitative study investigated the extent to which Hispanic newcomer English Language Learners (ELLs) enrolled in grades 4 and 5, who received math instruction in Spanish, improved their math scores in district and state tests as compared to ELLs who received math instruction in English only. The researcher compared 2017-2018 quarterly assessments for those students who received math instruction in Spanish against secondary archival data from the prior three years for students who had received math instruction in English. The primary conceptual framework used to ground this research included the Common Underlying Proficiency Theory postulated by Cummins (1981), which suggests that while every language is different at the surface level, certain commonalities, such as content learning (skills that demand more complex thinking), exist among them. Well-developed, complex thinking skills acquired in one language can translate into positive outcomes when learning a second language (Cummins, 2012). In general, the results of the current study indicate that ELLs who received math instruction in Spanish exhibited higher gains (in that subject) than those instructed in English-only settings. However, when controlling for gender, time in the U.S., grade, and English proficiency, the results were mixed. Specifically, this analysis demonstrates that math content instruction in Spanish improved achievement by 6% for the treated group compared to < 3% for the comparison group. These findings demonstrated that instructional support in ELLs’ first language (Spanish) for at least one hour a day during a six-month period contributed to their academic performance in math more than English-only models used in similar settings. While not a complete panacea for the multiple challenges faced by ELLs in U.S. schools, these results may have great implications for practice. That is, school leaders interested in closing academic achievement gaps for their newcomer ELLs may consider adding on-site, dual-language models to their ESL programs.
On-Chip Diamond Raman Laser
Creators: name: Latawiec, Pawel
name: Venkataraman, Vivek
name: Burek, Michael J.
name: Hausmann, Birgit J. M.
name: Bulu, Irfan
name: Loncar, Marko
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Synthetic single-crystal diamond has recently emerged as a promising platform for Raman lasers at exotic wavelengths due to its giant Raman shift, large transparency window and excellent thermal properties yielding a greatly enhanced figure-of-merit compared to conventional materials. To date, diamond Raman lasers have been realized using bulk plates placed inside macroscopic cavities, requiring careful alignment and resulting in high threshold powers (~W-kW). Here we demonstrate an on-chip Raman laser based on fully-integrated, high quality-factor, diamond racetrack micro-resonators embedded in silica. Pumping at telecom wavelengths, we show Stokes output discretely tunable over a ~100nm bandwidth around 2-μm with output powers >250 μW, extending the functionality of diamond Raman lasers to an interesting wavelength range at the edge of the mid-infrared spectrum. Continuous-wave operation with only ~85 mW pump threshold power in the feeding waveguide is demonstrated along with continuous, mode-hop-free tuning over ~7.5 GHz in a compact, integrated-optics platform.
description: 13 pages, 4 figures
Open energy system modelers call for CC‑BY‑4.0 data licensing wherever possible — our world needs comprehensive usable and reusable data to transition to net‑zero
Creators: name: Morrison, Robbie
name: Parzen, Maximilian
Publisher: name: Zenodo
Year: 2023
Subjects: open data
open source
open energy system modelling

description: An open letter that was originally shared on openmod and LinkedIn calling for open data licensing wherever possible.
Feasibility of platelet marker analysis in ischemic stroke patients and their association with one-year outcome. A pilot project within a subsample of the Stroke Induced Cardiac Failure in Mice and Men (SICFAIL) cohort study
Creators: name: Seyhan, Mert
name: Ungethüm, Kathrin
name: Schuhmann, Michael K.
name: Mackenrodt, Daniel
name: Rücker, Viktoria
name: Montellano, Felipe A.
name: Wiedmann, Silke
name: Rath, Dominik
name: Geisler, Tobias
name: Nieswandt, Bernhard
name: Kraft, Peter
name: Kleinschnitz, Christoph
name: Heuschmann, Peter U.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: Patients with ischemic stroke (IS) are at increased risk of mortality and recurrent cerebro- or cardiovascular events. Determining prognosis after IS remains challenging but blood-based biomarkers might provide additional prognostic information. As platelets are crucially involved in the pathophysiology of vascular diseases, platelet surface proteins (PSP) are promising candidates as prognostic markers in the hyperacute stage. In this pilot study, feasibility of PSP analysis by flow cytometry (HMGB1, CD84, CXCR4, CXCR7, CD62p with and without ADP-stimulation, CD41, CD61, CD40, GPVI) was investigated in 99 (median 66 years, 67.5% male) acute IS patients admitted to Stroke Unit within a substudy of the Stroke-Induced Cardiac FAILure in mice and men (SICFAIL) cohort study. Association between PSP expression and unfavorable one-year outcome (cerebro- or cardiovascular event, all-cause mortality and care dependency defined as Barthel Index <60) was explored. PSP measurements were feasible. Several process- (e.g. temperatures, processing times) and patient-related factors (e.g. prestroke ischemic events, surgery, blood pressure, antiplatelet therapy) were identified to be potentially associated with PSP expression. Elevated CD40 levels above study population’s median were associated with unfavorable outcome. Standardized conditions during blood draw and processing within the hyperacute stroke unit setting are required and patient-related characteristics must be considered for valid measurements of PSP. Trial registration: German Clinical Trials Register (DRKS00011615).
Quantum teleportation over 100 km of fiber using highly-efficient superconducting nanowire single photon detectors
Creators: name: Takesue, Hiroki
name: Dyer, Shellee D.
name: Stevens, Martin J.
name: Verma, Varun
name: Mirin, Richard P.
name: Nam, Sae Woo
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum teleportation is an essential quantum operation by which we can transfer an unknown quantum state to a remote location with the help of quantum entanglement and classical communication. Since the first experimental demonstrations using photonic qubits and continuous variables, the distance of photonic quantum teleportation over free space channels has continued to increase and has reached >100 km. On the other hand, quantum teleportation over optical fiber has been challenging, mainly because the multi-fold photon detection that inevitably accompanies quantum teleportation experiments has been very inefficient due to the relatively low detection efficiencies of typical telecom-band single photon detectors. Here, we report efficient quantum teleportation over optical fiber using four high-detection efficiency superconducting nanowire superconducting single-photon detectors (SNSPD) based on MoSi. These SNSPDs make it possible to perform highly-efficient multi-fold photon measurements, allowing us to confirm that the quantum states of input photons were successfully teleported over 100 km of fiber.
description: 6 pages, 4 figures. First draft
Mutated JAK2 signal transduction in human Induced Pluripotent Stem Cell (iPSC)-derived Megakaryocytes
Creators: name: Pawinwongchai, Jaturawat
name: Jangprasert, Panchalee
name: Nilsri, Nungruthai
name: Israsena, Nipan
name: Rojnuckarin, Ponlapat
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Neuroscience
subject: Pharmacology
subject: Developmental Biology
subject: Cancer
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases

description: Janus kinase 2 (JAK2) gene mutations are the main drivers for polycythemia vera (PV) and essential thrombocythemia (ET). The mechanisms of single altered gene causing two different diseases are unclear. Additionally, novel treatments specifically targeting mutated JAK2 proteins are needed. In this study, the induced pluripotent stem cells (iPSCs) were virally transduced to express wild-type JAK2 (JAK2WT), JAK2p.V617F (JAK2V617F) or JAK2p.N542_E543del (JAK2exon12) under a doxycycline-inducible system. The modified iPSCs which were differentiated into megakaryocytes in the presence vs. absence of doxycycline were compared to ensure that the differences were solely from mutated JAK2 expressions. The JAK2V617-expressing iPSCs yielded significantly higher numbers of megakaryocytes consistent with the ET phenotype, while there was no enhancement by JAK2exon12 expression compatible with the pure erythrocytosis in humans. Capillary Western analyses revealed significantly greater JAK2 phosphorylation in iPSCs carrying JAK2V617F but not in JAK2WT and JAK2exon12 iPSCs. Activation of STAT3, STAT5 and AKT was increased by JAK2V617F, while they were decreased in JAK2exon12 iPSCs. Notably, interferon alpha and/or arsenic trioxide inhibited megakaryocytes proliferation and reduced JAK2, STAT3, STAT5 and AKT phosphorylation in mutant JAK2-expressing iPSCs compared with those without induction. In conclusion, JAK2V617F expression in iPSCs preferentially promoted megakaryocytes with a signaling profile distinctive from JAK2exon12 expression. Treatments with interferon alpha or arsenic trioxide preferentially suppressed the mutated over wild-type JAK2 signaling. This iPSC model is helpful in mechanistic studies and novel therapy screen for myeloproliferative neoplasm.
How resilience factors influence adjustment in adolescents with chronic kidney disease
Creators: name: Fenton, Nicole M.
Publisher: name: University of North Carolina at Chapel Hill
Year: 2010

description: Illness severity may not fully predict an adolescent's adjustment rather; psychosocial factors may be playing a role. The current study utilized the Disability-Distress-Coping Model to conceptualize how resilience factors influence adjustment. Participants were recruited from the UNC Chapel Hill outpatient clinic and included 50 adolescents age 13-18 with a diagnosis of CKD II or above. Data analysis consisted of a series of regressions, indicating that overall family functioning and specifically family cohesion are significant positive predictor of social functioning. Overall coping efficacy was not a significant predictor of social or psychosocial functioning, however; the efficacies of two specific coping strategies were: emotion regulation and seeking social support. These findings suggest that adolescents with CKD are able to adjust well to having a chronic illness and that family functioning and coping efficacy play an important role in facilitating this positive adjustment.
Brain connectivity during encoding and retrieval of spatial information: individual differences in navigation skills
Creators: name: Sharma, Greeshma
name: Gramann, Klaus
name: Chandra, Sushil
name: Singh, Vijander
name: Mittal, Alok Prakash
Publisher: name: Technische Universität Berlin
Year: 2017
Subjects: subject: spatial navigation
subject: spatial memory
subject: brain connectivity
subject: reference frame proclivity
subject: graph theory

description: Emerging evidence suggests that the variations in the ability to navigate through any real or virtual environment are accompanied by distinct underlying cortical activations in multiple regions of the brain. These activations may appear due to the use of different frame of reference (FOR) for representing an environment. The present study investigated the brain dynamics in the good and bad navigators using Graph Theoretical analysis applied to low-density electroencephalography (EEG) data. Individual navigation skills were rated according to the performance in a virtual reality (VR)-based navigation task and the effect of navigator's proclivity towards a particular FOR on the navigation performance was explored. Participants were introduced to a novel virtual environment that they learned from a first-person or an aerial perspective and were subsequently assessed on the basis of efficiency with which they learnt and recalled. The graph theoretical parameters, path length (PL), global efficiency (GE), and clustering coefficient (CC) were computed for the functional connectivity network in the theta and alpha frequency bands. During acquisition of the spatial information, good navigators were distinguished by a lower degree of dispersion in the functional connectivity compared to the bad navigators. Within the groups of good and bad navigators, better performers were characterised by the formation of multiple hubs at various sites and the percentage of connectivity or small world index. The proclivity towards a specific FOR during exploration of a new environment was not found to have any bearing on the spatial learning. These findings may have wider implications for how the functional connectivity in the good and bad navigators differs during spatial information acquisition and retrieval in the domains of rescue operations and defence systems.
Magnon-driven longitudinal spin Seebeck effect in F|N and N|F|N structures: role of asymmetric in-plane magnetic anisotropy
Creators: name: Chotorlishvili, L.
name: Toklikishvili, Z.
name: Etesami, S. R.
name: Dugaev, V. K.
name: Barnas, J.
name: Berakdar, J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The influence of an asymmetric in-plane magnetic anisotropy on the thermally activated spin current is studied theoretically for two different systems; (i) the system consisting of a ferromagnetic insulator in a direct contact with a nonmagnetic metal, and the sandwich structure consisting of a ferromagnetic insulating part sandwiched between two nonmagnetic metals. It is shown that when the difference between the temperatures of the two nonmagnetic metals in a structure is not large, the spin pumping currents from the magnetic part to the nonmagnetic ones are equal in amplitude and have opposite directions, so only the spin torque current contributes to the total spin current. The spin current flows then from the nonmagnetic metal with the higher temperature to the nonmagnetic metal having a lower temperature. Its amplitude varies linearly with the difference in temperatures. In addition, we have found that if the magnetic anisotropy is in the layer plane, then the spin current increases with the magnon temperature, while in the case of an out-of-plane magnetic anisotropy the spin current decreases when the magnon temperature enhances. Enlarging the difference between the temperatures of the nonmagnetic metals, the linear response becomes important, as confirmed by analytical expressions inferred from the Fokker-Planck approach and by the results obtained upon a full numerical integration of the stochastic Landau-Lifshitz-Gilbert equation.
description: 11 pages, 9 figures
More on the initial singularity problem in gravity's rainbow cosmology
Creators: name: Khodadi, M.
name: Nozari, K.
name: Sepangi, H. R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Using a one-dimensional minisuperspace model with a dimensionless ratio $\frac{E}{E_{Pl}}$, we study the initial singularity problem at the quantum level for the closed rainbow cosmology with a homogeneous, isotropic classical space-time background. We derive the classical Hamiltonian within the framework of Schutz's formalism for an ideal fluid with a cosmological constant. We characterize the behavior of the system at the early stages of the universe evolution through analyzing the relevant shapes for the potential sector of the classical Hamiltonian for various matter sources, each separately modified by two rainbow functions. We show that for both rainbow universe models presented here, there is the possibility of eliminating the initial singularity by forming a potential barrier and static universe for a non-zero value of the scale factor. We investigate their quantum stability and show that for an energy-dependent space-time geometry with energies comparable with the Planck energy, the non-zero value of the scale factor may be stable. It is shown that under certain constraints the rainbow universe model filled with an exotic matter as a domain wall fluid plus a cosmological constant can result in a non-singular harmonic universe. In addition, we demonstrate that the harmonically oscillating universe with respect to the scale factor is sensitive to $\frac{E}{E_{Pl}}$ and that at high energies it may become stable quantum mechanically. Through a Schrödinger-Wheeler-De Witt (SWD) equation obtained from the quantization of the classical Hamiltonian, we also extract the wave packet of the universe with a focus on the early stages of the evolution.
description: 19 pages, 4 figures
Extended disformal approach in the scenario of Rainbow Gravity
Creators: name: Carvalho, Gabriel G.
name: Lobo, Iarley P.
name: Bittencourt, Eduardo
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We investigate all feasible mathematical representations of disformal transformations on a space-time metric according to the action of a linear operator upon the manifold's tangent and cotangent bundles. The geometric, algebraic and group structures of this operator and their interfaces are analyzed in detail. Then, we scrutinize a possible physical application, providing a new covariant formalism for a phenomenological approach to quantum gravity known as Rainbow Gravity.
description: 8 pages, 2 figures
Nonreciprocal and non-Hermitian metamaterials
Creators: name: Duggan, Robert Stanley
Publisher: name: The University of Texas at Austin
Year: 2021
Subjects: Metamaterials
Nonreciprocity
Electromagnetics
Time-modulation
Non-Hermitian

description: The modern field of electromagnetic metamaterials focuses on engineering materials at the subwavelength scale for enhanced control over wave phenomena. This includes spatial structuring, but also applying suitable shaping of material properties in the time dimension. In this work, we extend the idea of spatiotemporal modulation of materials, and show how effectively modulating the permittivity tensor in time and space can be utilized for extreme nonreciprocal responses that do not require special materials or strong magnetic bias. This is possible with nonlinear optical materials or optomechanical structures, and shows behavior analogous to the canonical Faraday effect arising in a ferrite with a magnetic bias. This scheme can be utilized for a wide range of nonreciprocal devices, including Faraday rotators, isolators, circulators, and topological insulators. Non-Hermitian metamaterials is also a growing subfield of this area of science and technology, as material loss and gain result in a number of interesting spectral properties. In this work, we discuss how we can utilize the idea of embedded eigenstates, which have vanishing radiation lifetimes, to sculpt the profile of thermal emission, with a goal of narrow bandwidth and directive emitters. We will then show what fundamental limits arise in structures that seek broad bandwidth superluminal behavior based on amplification, which break the requirements imposed by passivity, but are still constrained by causality. Finally, we will provide an analysis of a proposed class of sensors based on spectral singularities in non-Hermitian structures known as exceptional points, with Monte-Carlo simulations backed up by rigorous sensing theory, attempting to make a fair comparison across a wide range of sensors.
title: Manipulation von Phasenseparationsprozessen
title: Entwicklung einer Fouling-Release-Beschichtung
titleType: Subtitle
Creators: name: Ruthmann, Simon Henrik
Publisher: name: Universität Paderborn
Year: 2022

description: Es wird ein neuartiges Konzept einer umweltfreundlichen Fouling-Release-Beschichtung für die Anwendung in der maritimen Technik vorgestellt. Im Speziellen wird eine Schiffslackierung entwickelt, deren biorepulsive Oberfläche die Anhaftung von Foulingorganismen erschwert. Das Beschichtungssystem basiert auf einer UV-vernetzbaren Polyurethan-/Acrylatmatrix und einem polydimethylsiloxanhaltigen Antifoulingreagenz. Letzteres bildet Emulsionstropfen aus und separiert in Richtung der Lackoberfläche. Dadurch entstehen kreisförmige antifoulingaktive Domänen, die einen Großteil (etwa 61 %) dieser Oberfläche belegen. In Feldtestversuchen vor Norderney konnte eine Minderung des Foulingbewuchses nachgewiesen werden. Der Antifoulingeffekt soll durch die Erhöhung des Belegungsgrades gesteigert werden. Dazu wird das Lacksystem mit amphiphilen Partikeln additiviert, die die Grenzflächenspannung zwischen Domäne und Matrix senken. Dies führt zur Spreitung der Domänen, wodurch sich das Antifoulingreagenz zusammen mit den Partikeln großflächig auf dem Lackfilm verteilt. Es entstehen Pickering Emulsionen und spezifische Oberflächenstrukturen in Korrelation zur Partikelpolarität. Die Amphiphilie der Partikel soll die Anhaftung der Organismen zusätzlich hemmen, sodass der Bewuchsschutz optimiert wird. Außerdem sollen die mechanischen Eigenschaften sowie die Haltbarkeit der Beschichtung verbessert werden, wodurch eine reinigungsfähige Oberfläche erzeugt wird.
description: A novel concept of environmentally friendly antifouling coatings for maritime applications is presented. In particular, a ship coat is being developed, whose biorepulsive surface impedes the adhesion of fouling organisms. The coating system is based on an UV-crosslinkable polyurethane/acrylate matrix and a polydimethylsiloxane antifouling agent. The letter forms emulsion droplets and separates towards the lacquer surface. Thus circular antifouling active domains arise, that cover the main part (about 61 %) of this surface. In field tests near Norderney the decrease of fouling growth was proven. The antifouling effect is expected to be enhanced by raising the degree of coverage. For this purpose, amphiphilic particles, that lower the interfacial tension between domain and matrix, are added to the coating system. This leads to the spreading of domains whereby antifouling agent as well as particles get extensively distributed over the coating. Pickering emulsions and specific surface structures are formed in correlation to the particle polarity. The particles amphiphilicity should add to the impediment of foulants adhesion and improve the growth protection. Furthermore, mechanical resistance and the coatings durability are increased to generate a cleanable surface.
Engagement and Burnout in Higher Education Students: a Latent Profile Analysis
Creators: name: Cano, Francisco
name: Pichardo, M.C.
name: Justicia-Arráez, Ana
name: Romero-López, Miriam
name: Berbén, A.B.G.
Publisher: name: figshare
Year: 2023
Subjects: Educational psychology

description: A file (*.docx) containing: Online resource 1: Measurement models ........................................................................ 1 - 10 Online resource 2: Descriptive statistics, correlations, reliability and validity (convergent, discriminant and criterion-related) ............ 11 - 26 Online resource 3: Ancillary figures and tables related to LPA ................................. 27 - 28 Online resource 4: some examples (excerpts) of Mplus code for the main analyses . 29 - 47 Online resource 5: References only cited in the Online Supplemental Information .. 48 - 50