gebhart/patrepeval huggingface dataset:
A Low-Complexity Hybrid Linear and Nonlinear Precoder for Line-Of-Sight Massive MIMO With Max-Min Power Control (2021)

In line-of-sight (LOS) massive MIMO, there is a nonnegligible probability that the channel vectors of some users become correlated. In these correlated scenarios, nonlinear precoders can be used instead of linear precoders at the cost of high computational complexity. To reduce the complexity of nonlinear precoders, hybrid linear and nonlinear precoders have been suggested in 5G New Radio (NR). In this paper, we find the probability that there is at least one pair of correlated users and we find the average number of correlated users. We propose a hybrid linear and nonlinear precoder (HLNP) with max-min power control for which the served users are divided into two groups. By employing a proposed modified Tomlinson-Harashima Precoding (THP), we design and combine the transmit vectors of the two groups such that inter-group interference is removed. Simulation results show that by employing HLNP instead of zero-forcing, the required transmit power to assure a given average block error rate (BLER) with 95% probability is reduced. For a 64-antennas BS, when modified THP is used for 3 out of 10 users in HLNP, the transmit power is reduced by up to 4.70 dB to assure an average BLER of 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">−2</sup> using 16QAM and 64QAM constellations with NR low-density parity-check codes.
Novel Chromene-Derived Selective Estrogen Receptor Modulators Useful for Alleviating Hot Flushes and Vaginal Dryness (2006)

A novel SERM (selective estrogen receptor modulators), 1-(R), a chromene-derived bisbenzopyran, was discovered to alleviate hot flushes and effectively increase vaginal fluidity in rats. Moreover, 1-(R) was found to have beneficial effects on plasma cholesterol and bone metabolism while maintaining antiestrogenic activity in the uterus. The biological profile of its enantiomer 1-(S) was also evaluated.
Metal-Enhanced Phosphorescence:  Interpretation in Terms of Triplet-Coupled Radiating Plasmons (2006)

We report our detailed metal-enhanced phosphorescence (MEP) findings using Rose Bengal at low temperature. Silver Island Films (SiFs) in close proximity to Rose Bengal significantly enhance the phosphorescence emission intensity. In this regard, a 5-fold brighter phosphorescence intensity of Rose Bengal was observed from SiFs as compared to a glass control sample at 77 K. In addition, several factors affecting MEP, such as distance dependence and silver film morphology, were also investigated. Our findings suggest that both singlet and triplet states can couple to surface plasmons and enhance both fluorescence and phosphorescence yields. This finding suggests that MEP can be used to promote triplet-based assays, such as those used in photodynamic therapy.
SiO2/InP interfaces with reduced interface state density (1984)

By employing a new InP surface preparation procedure based upon KOH/methanol, the interface state density of plasma-enhanced chemically vapor deposited SiO2/InP structures has been significantly reduced. Capacitance–voltage characteristics of these structures exhibit unusual nonequilibrium behavior which appears to be assoicated with the formation of a p-type inversion layer and with the presence of interface traps with very slow response times. This surface preparation procedure yields an InP native oxide which has no detectable In2O3 and is contaminated with K.
Unsupervised Learning of Place Cells, Head-Direction Cells, and Spatial-View Cells with Slow Feature Analysis on Quasi-Natural Videos (2007)

We present a model for the self-organized formation of place cells, head-direction cells, and spatial view cells in the hippocampal formation based on unsupervised learning on quasi-natural visual stimuli. The model comprises a hierarchy of Slow Feature Analysis (SFA) nodes, which were recently shown to be a good model for complex cells in the early visual system (Berkes and Wiskott, 2005). The system extracts a distributed grid-like representation of position and orientation, which is transcoded into a localized place field, head direction, or view representation, respectively, by sparse coding. The type of cells that develops depends solely on the relevant input statistics, i.e the movement pattern of the simulated animal. The numerical simulations are complemented by a mathematical analysis that allows us to accurately predict the output of the top SFA layer. \n\n
Charge Transport and the Nature of Traps in Oxygen Deficient Tantalum Oxide (2018)

Optical and transport properties of nonstoichiometric tantalum oxide thin films grown by ion beam deposition were investigated in order to understand the dominant charge transport mechanisms and reveal the nature of traps. The TaO<sub>x</sub> films composition was analyzed by X-ray photoelectron spectroscopy and by quantum-chemistry simulation. From the optical absorption and photoluminescence measurements and density functional theory simulations, it was concluded that the 2.75 eV blue luminescence excited in a TaO<sub>x</sub> by 4.45 eV photons, originates from oxygen vacancies. These vacancies are also responsible for TaO<sub>x</sub> conductivity. The thermal trap energy of 0.85 eV determined from the transport experiments coincides with the half of the Stokes shift of the blue luminescence band. It is argued that the dominant charge transport mechanism in TaO<sub>x</sub> films is phonon-assisted tunneling between the traps.
A self-degradable hydrogel sensor for a nerve agent tabun surrogate through a self-propagating cascade (2021)

Nerve agents that irreversibly deactivate the enzyme acetylcholinesterase are extremely toxic weapons of mass destruction. Thus, developing methods to detect these lethal agents is important. To create an optical sensor for a surrogate of the nerve agent tabun, as well as a physical barrier that dissolves in response to this analyte, we devise a network hydrogel that decomposes via a self-propagating cascade. A Meldrums acid-derived linker is incorporated into a hydrogel that undergoes a declick reaction in response to thiols, thereby breaking network connections, which releases more thiols, propagating the response throughout the gel. A combination of chemical reactions triggered by the addition of the tabun mimic initiates the cascade. The dissolving barrier is used to release dyes, as well as nanocrystals that undergo a spontaneous aggregation. Thus, this sensing system for tabun generates a physical response and the delivery of chemical agents in response to an initial trigger.
A shift in abscisic acid/gibberellin balance underlies retention of dormancy induced by seed development temperature (2020)

Through a combination of physiological, pharmacological, molecular and targeted metabolomics approaches, we showed that retention of wheat (Triticum aestivum L.) seed dormancy levels induced by low and high seed development temperatures during post-desiccation phases is associated with modulation of gibberellin (GA) level and seed responsiveness to abscisic acid (ABA) and GA via expression of TaABI5 and TaGAMYB, respectively. Dormancy retention during imbibition, however, is associated with modulations of both ABA level and responsiveness via expression of specific ABA metabolism (TaNCED2 and TaCYP707A1) and signalling (TaPYL2, TaSnRK2, TaABI3, TaABI4 and TaABI5) genes, and alterations of GA levels and responsiveness through expression of specific GA biosynthesis (TaGA20ox1, TaGA20ox2 and TaGA3ox2) and signalling (TaGID1 and TaGID2) genes, respectively. Expression patterns of GA signalling genes, TaRHT1 and TaGAMYB, lacked positive correlation with that of GA regulated genes and dormancy level observed in seeds developed at the two temperatures, implying their regulation at post-transcriptional level. Our results overall implicate that a shift in ABA/GA balance underlies retention of dormancy levels induced by seed development temperature during post-desiccation and imbibition phases. Consistently, genes regulated by ABA and GA during imbibition overlapped with those differentially expressed between imbibed seeds developed at the two temperatures and mediate different biological functions.
Novel Hexahydrospiro[piperidine-4,1‘-pyrrolo[3,4-c]pyrroles]:  Highly Selective Small-Molecule Nociceptin/Orphanin FQ Receptor Agonists (2002)

Novel hexahydrospiro[piperidine-4,1‘-pyrrolo[3,4-c]pyrroles that act as potent and selective orphanin FQ/nociceptin (N/OFQ) receptor (NOP) agonists were identified. The best compound, (+)-5a, potently inhibited 3H−N/OFQ binding to the NOP receptor (Ki = 0.49 nM) but was >1000-fold less potent in binding to MOP, KOP, and DOP opiate receptors. Further, (+)-5a potently stimulated GTPγS binding to NOP membranes (EC50 = 65 nM) and inhibited forskolin-mediated cAMP accumulation in NOP-expressing cells (EC50 = 9.1 nM) with a potency comparable to that of the natural peptide agonist N/OFQ. These results indicate that (+)-5a is a highly selective and potent small-molecule full agonist of the NOP receptor.
P1.9 PLATELET-LOCALIZED FXI PROMOTES A GLYCOPROTEIN IBα DEPENDENT FEEDBACK LOOP IN ARTERIAL HYPERTENSION AND VASCULAR INFLAMMATION (2015)

Background: Interactions of platelets, leukocytes and the vessel wall play pivotal roles in activating coagulation and precipitating thrombosis. High levels of angiotensin II (ATII) cause arterial hypertension by a complex inflammatory pathway requiring leukocyte recruitment and reactive oxygen species production within the vessel wall. Objective: The aim of this work was to explore the role of platelet glycoprotein Ibα dependent thrombin-FXI feedback loop in arterial hypertension. Methods: FXII−/−, FXI−/−, and hIL-4R/Ibα mice and 5/6 nephrectomized rats were used for this study. Mice where treated with ATII (1mg/kg−1/d−1 for 7 days) using osmotic minipumps. Blood pressure was recorded using tail cuff measurement and telemetry carotid implants. Vascular reactivity was assessed in isolated aortic segment, and thrombin generation was measured using calibrated automated thrombography. Results: ATII induces an upregulation of tissue factor, thrombin-dependent endothelial cell VCAM-1 expression and integrin α4- and platelet-dependent leukocyte adhesion to arterial conductance vessels. The resulting vascular dysfunction unexpectedly involved the activation of FXI but not FXII. The platelet FXI receptor glycoprotein Ibα supports the upregulation of thrombin feedback activation in ATII-treated mice. Importantly, pharmacologic inhibition of FXI synthesis is sufficient to prevent thrombin propagation on platelets, to reduce vessel wall leukocyte infiltration, and to diminish ATII-induced endothelial dysfunction and arterial hypertension in mice and rats. Conclusion: Our results reveal a critical role of platelet GPIbα to promote localized thrombin amplification and a FXI-thrombin feedback loop in ATII-induced vascular inflammation. Targeting FXI could be a novel therapeutic possibility to interrupt this heterotypic cellular coagulation-inflammatory circuit.
SimSOTA (2013)

Engineering a decentralized system of autonomous service components and ensembles having multiple and interacting feedback loops is very challenging. While several works have expressed feedback loops as first-class entities, very little attention has been given to providing actual tool support. In this paper, we propose a novel approach to architect and engineer self-adaptive systems based on feedback loops. We also present the first implementation of SimSOTA, an Eclipse plug-in being developed to support the modeling, simulating and validating of self-adaptive systems based on our feedback loop-based approach. We validate our approach using a case study in cooperative electric vehicles.
Laser pumped 3-µm Ho:YAlO laser (1989)

The potential medical uses for 3- µ m lasers has spurred a search for efficient high power solid state sources. Holmium laser operation has been demonstrated using flashlamp pumping in a number of different hosts where the lowest thresholds have been observed using holmium doped yttrium aluminum perovskite (YAlO 3 ). Emission in YAlO 3 has been reported at 2.92 and 3.02 µ m on the 5 I 6 – 5 I 7 transition. We have utilized intracavity laser pumping with the 1.08- µ m line of the Nd:YAlO 3 laser which has resulted in good efficiency and the observation of a new laser line at 2.85 µ m. The intracavity pumping scheme was adopted because of the low absorption (~8% per pass) of the 1.08- µ m pump by the Ho:YAlO 3 rod. A Ho:YAlO 3 rod was placed inside the cavity of a flashlamp pumped Nd:YAlO 3 laser whose cavity losses aside from the rod are low. Since the rod is the dominant loss in the Nd:YAlO 3 cavity it absorbs most of the pump light after many passes. A separate 3- µ m cavity cocked at a slight angle from the 1.08- µ m cavity also contains the ho:yalo 3 rod. Emission was observed at 2.92 µ m as well as on a new line at 2.85 µ m. The 2.85- µ m line was extremely sensitive to atmospheric water absorption and ran well only when the laser was purged with dry nitrogen. In a nonoptimized cavity we observed slope efficiencies of ~4% relative to the 1.08- µ m pump and a maximum output energy of 8 mJ.
Inference of visual field test performance from OCT volumes using deep learning (2019)

Visual field tests (VFT) are pivotal for glaucoma diagnosis and conducted regularly to monitor disease progression. Here we address the question to what degree aggregate VFT measurements such as Visual Field Index (VFI) and Mean Deviation (MD) can be inferred from Optical Coherence Tomography (OCT) scans of the Optic Nerve Head (ONH) or the macula. Accurate inference of VFT measurements from OCT could reduce examination time and cost. We propose a novel 3D Convolutional Neural Network (CNN) for this task and compare its accuracy with classical machine learning (ML) algorithms trained on common, segmentation-based OCT, features employed for glaucoma diagnostics. Peak accuracies were achieved on ONH scans when inferring VFI with a Pearson Correlation (PC) of 0.88$\pm$0.035 for the CNN and a significantly lower (p $
30.5 A 1.41pJ/b 56Gb/s PAM-4 Wireline Receiver Employing Enhanced Pattern Utilization CDR and Genetic Adaptation Algorithms in 7nm CMOS (2019)

Analog mixed-signal (AMS) receivers for 50+Gb/s PAM-4 offer lower power than ADC-DSP receivers [1]-[3]. Those using DFEs [2]-[3] suffer from relatively high power consumption due to the large number of latches needed in PAM-4 speculative DFEs. Better power efficiency can be achieved using only a CTLE [1]. However, analog front-ends (AFEs) are sensitive to variations in process, supply voltage and temperature. To combat this while accommodating links with loss exceeding 20dB, an AFE with extensive programmability is combined with an efficient genetic adaptation algorithm to select a setting that minimizes BER thus equalizing a 22dB-loss channel. The lack of a DFE, combined with a novel PAM-4 clock recovery scheme greatly reduces the number of latches required compared to previous works, resulting in 1.41pJ/bit power consumption in 7nm CMOS technology.
Deep recombination centers inCu2ZnSnSe4revealed by screened-exchange hybrid density functional theory (2015)

We present a comprehensive study of the thermodynamic and electronic properties of intrinsic point defects in the solar energy conversion materials $\mathrm{C}{\mathrm{u}}_{2}\mathrm{ZnSnS}{\mathrm{e}}_{4}$ and $\mathrm{CuInS}{\mathrm{e}}_{2}$ based on the screened-exchange hybrid density functional theory. A comparison between the defect transition levels for $\mathrm{C}{\mathrm{u}}_{2}\mathrm{ZnSnS}{\mathrm{e}}_{4}$ and $\mathrm{CuInS}{\mathrm{e}}_{2}$ reveals that in $\mathrm{C}{\mathrm{u}}_{2}\mathrm{ZnSnS}{\mathrm{e}}_{4}$, the $\mathrm{S}{\mathrm{n}}_{\mathrm{Cu}}$ and $\mathrm{S}{\mathrm{n}}_{\mathrm{Zn}}$ antisite defects can be recombination centers with defect states close to midgap, while the $\mathrm{I}{\mathrm{n}}_{\mathrm{Cu}}$ antisite defect has a shallow defect level in $\mathrm{CuInS}{\mathrm{e}}_{2}$. The resultant higher Shockley-Read-Hall recombination rate in $\mathrm{C}{\mathrm{u}}_{2}\mathrm{ZnSnS}{\mathrm{e}}_{4}$ reduces the steady-state concentration of minority carriers and quasi-Fermi level separation under illumination. This may explain the origin of the low open-circuit voltage values for $\mathrm{C}{\mathrm{u}}_{2}\mathrm{ZnSnS}{\mathrm{e}}_{4}$ solar cells compared to $\mathrm{CuInS}{\mathrm{e}}_{2}$ solar cells.
Performance study of channel assignment algorithms in peer to peer wireless ad hoc networks (2016)

The paper focuses on the performance analysis of channel assignment algorithms for peer to peer wireless ad hoc network by means of realistic channel model. The channel assignment is modeled as an edge colouring problem and two colouring algorithms including random and greedy colouring have been studied using the realistic 3D ray tracing based path loss model and its performance is compared with the theoretical model. The simulation study shows that the algorithms perform better with the ray tracer model with around 10 dB improvement in SINR as compared to the theoretical model.
Quasi-normal mode theory enforcing symmetries of the scattering matrix (2022)

We develop a quasinormal mode theory (QNMT) of the scattering matrix S, satisfying fundamental symmetries (such as reciprocity and time-reversal or PT symmetries) even for a small truncated set of resonances. It is a useful and accurate reduced-order model for S based on the resonant frequencies and mode-to-port coupling coefficients, obtained from an eigensolver without the need for QNM normalization. We further show that a slowly varying background, useful to describe Fano-shaped spectra, can be extracted using high-loss modes. We demonstrate the improved accuracy of our formulation using various electromagnetic metasurfaces.
CO2 Mineral Trapping Potential of Carbonates: A Numerical Investigation (2023)

Abstract During CO2 geo-storage, mineral dissolution is considered as the safest trapping technique however it is the longest and the most complicated trapping mechanism involving geo-chemical reactions and physical forces like diffusion and advection. Many factors also influence the mineral trapping capacity of the geological formation e.g., mineralogy, temperature, pH, CO2 fugacity, pressure of CO2, salinity and composition of the brine. The scope of this study is to investigate the mineral trapping of CO2 in Arabian carbonates reservoirs as a function of temperature, brine composition and pH of the subsurface systems. Numerical simulations are performed using the multi-phase simulator GEM-CMG. 2D and 3D models are developed to examine the mechanisms occurring during mineral trapping and how these affect its efficiency. The mineralogy of a carbonate field from an Arabian formation is used. Sensitivity analysis has been performed on the effect of temperature, pH and brine composition on CO2 mineralization tendency and porosity. The results suggest that dissolution and precipitation of minerals occurred during and post CO2 injection while pH had the major influence on mineral trapping. At basic pH conditions, pH=9, the highest amount of CO2 was mineralized while at mid pH, precipitation of carbonates decreased remarkably. Changing the brine composition also highly affected the storage capacity e.g., divalent salt accelerated CO2 mineralization. Moreover, temperature tends to promote the mineral activity during CO2 storage. While a score of publications investigated CO2 storage via structural, residual and dissolution trapping mechanisms, still the mineral trapping potential and its influencing factors have not been investigated much. This paper thus provides new insights into CO2 sequestration by mineral trapping pertinent to Arabian carbonate rocks.
Common Workflow Language & European Open Science Cloud pour l'implémentation de l'imagerie Quantitative de Susceptibilité Magnétique (QSM) du cerveau (2023)

Implémentation d'un pipeline pour le traitement des images IRM 7T pour l’imagerie QSM , défini avec Common Workflow Language (CWL) qui garantit sa pérennité et sa portabilité. En outre, on montre la faisabilité de ce type de traitement réalisé dans l’environnement Cloud des infrastructures Européennes de recherche.
Comparison of imaging properties of a computed radiography system and screen–film systems (1991)

To compare the diagnostic quality of images obtained with a computed radiography (CR) system based on storage phosphor technology with that obtained with conventional screen-film systems, a dual-image recording technique was devised. With this technique, a CR imaging plate is placed behind a screen-film system in a conventional cassette. This makes it possible to obtain two images simultaneously, one from each system, in a clinical examination with the same patient positioning, the same degree of patient motion, the same geometric unsharpness, and no additional exposure. The modulation transfer functions (MTFs) of the CR system with and without the dual-image recording technique were greater at low frequencies, but lower at high frequencies, that the MTFs of the screen-film systems used. The noise Wiener spectra of the CR images at the plane of the imaging plate were greater than those of the screen-film systems, but were comparable to those of the screen-film systems at the plane of the printed film due to the reduction in image size. Clinical chest images obtained with the dual-image recording technique appeared comparable, probably because of the image size reduction and the use of mild unsharp mask processing.
Density redistribution effects in fermionic optical lattices (2016)

We simulate a one-dimensional fermionic optical lattice to analyze heating due to nonadiabatic lattice loading. Our simulations reveal that, similar to the bosonic case, density redistribution effects are the major cause of heating in harmonic traps. We suggest protocols to modulate the local-density distribution during the process of lattice loading in order to reduce the excess energy. Our numerical results confirm that linear interpolation of the trapping potential and/or the interaction strength is an efficient method of doing so, bearing practical applications relevant to experiments.
Thymic microenvironment induces HIV expression. Physiologic secretion of IL-6 by thymic epithelial cells up-regulates virus expression in chronically infected cells (1991)

Abstract The hallmark of infection with HIV-1 is progressive depletion and qualitative dysfunction of the CD4+ Th cell population in infected individuals. Clinical trials of antiretroviral agents have shown that, despite suppression of virus replication, regeneration of the T cell pool does not occur. One proposed explanation for the defective regenerative capacity of the CD4+ T cell pool is infection of early T lymphocyte progenitors or stem cells. An additional explanation could be failure of cells of the intrathymic microenvironment (thymic epithelial (TE) cells) to carry out critical nurturing functions for developing thymocytes, i.e., secretion of thymocyte-trophic cytokines and expression of adhesion molecules. This study examines the effect of HIV on cultured TE cells and determines the role of TE cells in the regulation of viral expression in chronically HIV-infected cells. We found no evidence of infection of TE cells after exposure to HIV-1. However, normal human serum induced secretion of IL-6 by TE cells; induction of TE IL-6 was partially blocked by anti-IFN-gamma antibodies. Moreover, supernatants from TE cells maintained in normal human serum up-regulated HIV replication in chronically HIV-1-infected cells. Because intrathymic T cell precursors can be infected with HIV and T cell precursors come into close contact with TE cells in the thymus, IL-6 secreted by TE cells during normal intrathymic development may induce HIV expression in infected thymocytes in vivo and promote the intrathymic spread of HIV.