gebhart/patrepeval huggingface dataset:
<title>Wavefront generator for pupil function engineering</title> (2000)

We describe a simple method to obtain an arbitrary complex optical field. The system employs a ferroelectric liquid crystal spatial light modulator acting as a binary optical element in a 4-f optical system. The ability to produce an arbitrary wavefront permits us to modify the pupil function of an objective lens in any desired manner. Examples of pupil plane filters which enhance certain aspects of the point spread function are described.
High dynamic range airborne tracking and fire control radar subsystems (2003)

Two high-dynamic-range receiver subsystems for using in airborne radar fire control and tracking applications are described. A high-performance X-band monopulse tracking receiver and a Doppler fire control receiver are presented with performance data and design considerations to achieve high dynamic range. The radar subsystems described use magnetrons to produce the transmit pulses. An AFC (automatic frequency control) circuit locks the internal local oscillators to the transmit frequency to produce a 60-MHz IF (intermediate frequency) downconverted return.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
FREE VIBRATION ANALYSIS OF RECTANGULAR PLATES RESTING ON A TWO-PARAMETER ELASTIC MEDIUM (1970)

The free vibration analysis of plates resting on a two-parameter elastic medium is studied through a finite element procedure. The associated shape functions are derived from the solution of a beam resting on the two-parameter medium. A parametric study is conducted to identify the influence of various factors on the mode shapes and natural frequencies.
Clozapine Eligibility Among State Hospital Patients (1996)

Connecticut State Hospital's entire resident population (n = 1,300) was screened on an arbitrary target day to determine eligibility for clozapine. Sixty percent of 803 patients with schizophrenia or schizoaffective disorder diagnoses met Food and Drug Administration (FDA)- approved criteria for clozapine use as judged by review of past medication trial records and by the responsible physicians. Eighty-eight percent of these patients were medically cleared, and of those cleared, 63 percent agreed to clozapine treatment. Of the patients who began a clozapine trial, 76 percent were still taking the drug 12 months later. Preliminary findings from a randomized trial of clozapine versus usual care (n = 227) indicate that discharge rates associated with clozapine and usual care do not differ. Once discharged, however, patients assigned to clozapine are less likely to be readmitted. Hence, clozapine may be more cost-effective than usual care. However, before savings can be realized, State governments will have to make up-front investments of approximately $140 million simply to give patients hospitalized on a single day a year's access to clozapine.
Self-configuring Switched Multi-Element Antenna system for interference mitigation in femtocell networks (2011)

This paper introduces a Switched Multi-Element Antenna (SMEA) solution for interference mitigation in femtocell networks. While the main objective is to protect the femtocell users against uplink interference, the downlink interference from femtocell base stations to the other users is simultaneously reduced as a by-product of this technique. A tailored form of reinforcement learning is used to allow for self-configuration of the femtocell base station and to adaptively select the optimal antenna configuration in a time varying environment. Compared to the traditional Omni-directional antenna systems, the results show an average of 2.5dB gain in uplink direction in terms of reduced transmission power and approximately 1dB of gain in the downlink channel.
Back-end assignment schemes for clustered multithreaded processors (2004)

Power consumption and wire delays are two important limiting factors for current and forthcoming processors. Monolithic designs that keep reasonable power consumption and operate at high clock frequencies are ever harder to implement. In this paper we propose a novel multithreaded clustered microarchitecture that consists of a clustered front-end capable of fetching instructions from multiple hreads and a clustered back-end where instructions are executed. This microarchitecture combines the concepts of multithreading and clustering to a tack both problems: power consumption and wire delays. A key aspect of this microarchitecture is the assignment of resources to the simultaneously running threads. We propose two back-end assignment schemes; in the Static Back-end Assignment (SBA)the back-ends are statically assigned to the front-ends, while in the Dynamic Back-end Assignment (DBA) the back-ends are dynamically assigned according to the demands of each front-end. A limit study of the potential performance of DBA shows a minor benefit compared to SBA. The causes why the DBA scheme does not perform as initially expected are investigated and the main limiting factors of this architecture are evaluated. Finally,we point out he advantages of DBA versus SBA.
Improvement in Accuracy of Breakpoint Distance Model for Path Loss Prediction (2018)

Positioning algorithms of wireless terminals that are based on received signal strength (RSS) require highly accurate prediction of RSS. Revisiting breakpoint distance models for path loss prediction is essential for new applications of wireless communications such as wireless localization and dense interference calculations. The breakpoint distance is defined as the distance that separates two different trends of path loss that follows two different path loss exponents. The most widely used breakpoint distance model is based on Fresnel zone theory as the distance where the first Fresnel zone along direct ray begins to obstruct ground surface. In this work, we improve the accuracy of this model and extend its application to different polarization and propagation over water (e.g., sea) reflection surface.
Lipid Reassembly in Asymmetric Langmuir–Blodgett/Langmuir–Schaeffer Bilayers (2012)

Molecular-reorganization-induced morphology alteration in asymmetric substrate-supported lipid bilayers (SLBs) was directly visualized by means of atomic force microscopy (AFM) and total internal reflection fluorescence (TIRF) microscopy. SLB samples were fabricated on mica-on-glass and glass substrates by Langmuir-Blodgett (LB)/Langmuir-Schaeffer (LS) using binary lipid mixtures, namely, 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC)/1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) and ternary mixtures DOPC/DPPC/1,2-dioleoyl-sn-glycero-3-phospho-L-serine (DOPS), labeled with 0.2 mol % Texas Red 1,2-dihexadecanoyl-sn-glycero-3-phosphoethanolamine triethylammonium salt (TR-DHPE) dye. Phase segregations were characterized by TIRF imaging, and DPPC-enriched domain structures were also observed. Interestingly for ∼40% (n = 6) of the samples with binary mixtures in the LB leaflet and a single component in the LS leaflet, that is, (DOPC/DPPC)(LB)+DOPC(LS), the contrast of the DPPC domains changed from the original dark (without dye) to bright (more TR dye partitioning) on TIRF images, returning to dark again. This contrast reverse was also correlated to AFM height images, where a DPPC-DPPC gel phase was spotted after the TIRF image contrast returned to dark. The rupture force mapping results measured on these binary mixture samples also confirmed unambiguously the formation of DPPC-DPPC gel domain components during the contrast change. The samples were tracked over 48 h to investigate the lipid molecule movements in both the DPPC domains and the DOPC fluid phase. The fluorescence contrast changes from bright to dark in SLBs indicate that the movement of dye molecules was independent of the movement of lipid molecules. In addition, correlated multimodal imaging using AFM, force mapping, and fluorescence provides a novel route to uncover the reorganization of lipid molecules at the solid-liquid interface, suggesting that the dynamics of dye molecules is highly structure dependent.
The Preliminary Research of Sea Water District Heating and Cooling for Tallinn Coastal Area (2012)

This paper describes possibilities to utilize sea water for district heating and cooling purposes in Tallinn costal area. The sea water temperature profiles and suitability of heating and cooling generation are studied for continental climatic conditions. The district network study bases on 21 buildings located near to the Gulf of Finland. Industrial reversible heat pump technology is selected to cover heating and cooling loads for the new buildings. Combination of existing district heating and heat pump technology is considered for existing buildings. The results show possibilities, threats and need for further research of the sea water based heat pump district network implementation.
Novel Voltage Observer for Reduced Voltage Soft-Starter Torque Ramp: Description and Analysis Results (2023)

Reduced-Voltage Soft Starters (RVSSs) are typically phase-angle fired with an open-loop ramping voltage with an alpha stop at the current limit. The advanced controls for soft starters for pump control, which in most cases will be a closed-loop real power ramping reference, can be configured for a softer shaft speed pull-in resembling a convex S-curve. Another advanced control similar to pump control is a torque ramp. Authors of previous works have shown a stator flux-oriented torque RVSS control using an output motor stator voltage feedback approach. This article presents a novel voltage observer using a voltage-sensorless technique based upon the measured motor phase current and knowledge of the plant. The novel control method and results are shown, including an <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">IEEE 399 Brown Book</i> motor-starting analysis.
Dual mobility bearings withstand loading from steeper cup‐inclinations without substantial wear (2014)

ABSTRACT Steep cup abduction angles with adverse joint loading may increase traditional polyethylene bearing wear in total hip arthroplasties. However, there have been few reports evaluating the effect of cup inclination on the wear of dual‐mobility devices. In a hip joint simulation, we compared the short‐term wear of two‐sizes of modular highly cross‐linked dual‐mobility bearings (28 mm femoral head diameter/42 mm polyethylene insert outer diameter/54 mm acetabular shell diameter; 22.2 mm femoral head diameter/36 mm polyethylene insert outer diameter/48 mm acetabular shell diameter) at 50 and 65° of cup inclination with modular 28 mm femoral head on 54 mm cup diameter metal‐on‐highly cross‐linked polyethylene bearings. Increasing inclination from 50–65° had no changes in volumetric wear of 28/42/54 mm (mean, 1.7 vs. 1.2 mm 3 /million cycles, respectively; p = 0.50) and 22.2/36/48 mm (mean, 1.7 vs. 1.2 mm 3 /million cycles, respectively; p = 0.48) dual mobility bearings. At 65°, 22.2/36/48 mm dual‐mobility bearings had lower volumetric loss (mean, 2.2 vs. 6.3 mm 3 ; p = 0.03) and wear rates (mean, 1.2 vs. 2.7 mm 3 /million cycles; p = 0.02) compared to metal‐on‐highly cross‐linked polyethylene bearings. Modern‐generation dual‐mobility designs with highly cross‐linked polyethylenes may potentially withstand edge‐loading from steeper cup‐inclinations without substantial decreases in wear. © 2014 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 33:???–???, 2015.
IS THERE A LINK BETWEEN PROINFLAMMATORY CYTOKINE LEVELS AND PSYCHOLOGICAL DISTRESS IN PATIENTS UNDERGOING SURGERY FOR LOW BACK PAIN (2008)

Background: It has been demonstrated that a relationship exists between pro-inflammatory cytokine levels and psychological distress. Psychological distress commonly co-exists with back pain and may be detrimental to rehabilitation in such patients undergoing surgery. We aim to establish whether a link exists between psychological distress and increased levels of Interleukin- 6 (IL-6) and it’s soluble receptor (sIL-6r) in patients undergoing surgery for low back pain. Methods: All individuals selected for spinal fusion or stabilisation surgery, in whom low back pain was the predominant feature, were eligible for inclusion. Participants completed both the Distress and Risk Assessment Method (DRAM) and Hospital Anxiety and Depression Score (HADS) questionnaires pre-operatively. Blood samples for serum IL-6, sIL-6r and high sensitivity C-Reactive Protein (CRP) levels were extracted at recruitment and results were compared with questionnaire findings. Results: 63 patients were recruited of whom 90.5% had some degree of measurable psychological distress. Patients were divided into two groups based upon the degree of their distress. Mean IL-6 levels were higher in groups of patients with more distress measured by the DRAM and HADS depression component but were lower in patients with more anxiety. IL-6 receptor levels were higher in patients with raised DRAM and HADS anxiety scores. No significant correlation between questionnaire responses and cytokine levels was found. A correlation exists between IL-6 and CRP levels even at normal levels of CRP. Conclusion: There does not appear to be a significant relationship between IL-6 and sIL-6r levels and psychological distress in back pain patients.
Subband decomposition based image compression algorithms with nonlinear adaptive filter banks. (1999)

Image compression via adaptive perfect reconstruction filter banks is studied. An M-channel filter bank is employed in a lifting scheme using MSE-adaptive predictors. FFT-ordered L-filters are used for prediction. L-filters include a class of linear and nonlinear filters. A switching between three different filters is made for applying different filters over smooth regions, around edges and over texture regions of the image. FFT-ordering enables the use of different filters within the same implementation structure by only changing the node operations. Experimental results show that switchingimproves the performance in both subjective and objective terms in all regions. 1. INTRODUCTION Subband decomposition has been widely used in many signal processing applications includingimage compression. In most of the image compression applications, subband decomposition is achieved by a pair of linear time invariant filters. However, linear time invariant filters suffer from ringingand aliasing...
Biomimetic visual navigation in a corridor: to centre or not to centre? (2005)

International audience
Quaternion Collaborative Filtering for Recommendation (2019)

This paper proposes Quaternion Collaborative Filtering (QCF), a novel representation learning method for recommendation. Our proposed QCF relies on and exploits computation with Quaternion algebra, benefiting from the expressiveness and rich representation learning capability of Hamilton products. Quaternion representations, based on hypercomplex numbers, enable rich inter-latent dependencies between imaginary components. This encourages intricate relations to be captured when learning user-item interactions, serving as a strong inductive bias as compared with the real-space inner product. All in all, we conduct extensive experiments on six real-world datasets, demonstrating the effectiveness of Quaternion algebra in recommender systems. The results exhibit that QCF outperforms a wide spectrum of strong neural baselines on all datasets. Ablative experiments confirm the effectiveness of Hamilton-based composition over multi-embedding composition in real space.
Supplemental Figures S1-S8 from AEG-1 Promoter–Mediated Imaging of Prostate Cancer (2023)

&lt;p&gt;S1: Schematic maps of AEG-Prom and PEG-Prom reporter constructs S2: c-MYC protein levels analyzed in prostate cancer cell lines by western blotting using anti-MYC antibody (57-70 kDa) S3: Time course for model maturation with PC3-ML-Luc cells using bioluminescence imaging (BLI) at week 5 after injection of: (A) 5 x 104 cells (intracardiac); (B) 1 x 106 cells (tail vein) S4: Cancer-specific AEG-Prom and PEG-Prom activity shown by bioluminescence imaging (BLI) in an experimental model of human prostate cancer (PC3-ML) S5: Comparison of Luc plasmid delivery to lungs of the PCa group for pAEG-Luc treated and pPEG-Luc treated animals (n = 3, PCa-1-3 in Supplemental Fig. S4), respectively S6: Correlation between AEG-1 promoter-driven Luc expression and metastatic sites by histopathological analysis in a bone metastatic prostate cancer model of prostate cancer metastasis S7: Cancer-Specific AEG-Prom activity shown by bioluminescence imaging (BLI) in experimental models of human prostate cancer (PC3-ML) S8: AEG-Prom-based SPECT/CT imaging detects distant metastasis not identified by NaF- or FDG-PET/CT&lt;/p&gt;
Biological Effects of Low Intensity Ultrasound: The Mechanism Involved, and its Implications on Therapy and on Biosafety of Ultrasound (2004)

The biological effects of low intensity ultrasound (US) in vitro; the mechanisms involved; and the factors that can enhance or inhibit these effects are reviewed. The lowest possible US intensities required to induce cell killing or to produce free radicals were determined. Following sonication in the region of these intensities, the effects of US in combination with either hyperthermia, hypotonia, echo-contrast agents (ECA), CO2, incubation time, high cell density or various agents were examined. The results showed that hyperthermia, hypotonia and microbubbles are good enhancers of the bioeffects, while CO2, incubation time and high cell density are good inhibitors. Cellular membrane damage is pivotal in the events leading to cell death, with the cellular damage-and-repair mechanism as an important determinant of the fate of the damaged cells. The optimal level of apoptosis (with minimal lysis) and optimal gene transfection efficiency were attained using a pulsed low intensity US. In summary, the findings suggest that low intensity US is potentially useful in therapy, while on the other hand, they also call for further investigation of such clinical scenarios as high-grade fever, edema or use of ECA which may lead to the lowering of the threshold for bioeffects with diagnostic US.
Effect of Laser Surface Treatment on Microstructure and Properties of MRI 230D Mg Alloy (2007)

A creep resistant Mg alloy MRI 230D was subjected to laser surface treatment using Nd:YAG laser equipped with a fiber optics beam delivery system in argon atmosphere. The laser surface treatment produced a fine dendritic microstructure and this treatment was beneficial for the corrosion and wear resistance of the alloy. Long-term linear polarisation resistance and Electrochemical Impedance Spectroscopy measurements confirmed that the polarisation resistance values of laser treated material were twice as high as that for the untreated material. This improved behaviour was due to the finer and more homogenous microstructure of the laser treated surface. The laser treatment also increased surface hardness two times and reduced the wear rate by 25% due to grain refinement and solid solution strengthening.
Modeling of the critical current density of bipolar transistors with retrograde collector doping profile (1996)

Advanced bipolar transistors used for high speed integrated circuits tend to drive high current density. As a result, base-widening occurs and device performance degrades. One of the methods to alleviate the base-widening is to form retrograde collector profiles. In this paper, we have derived for the first time the model of the critical current density of bipolar transistors with retrograde collector profiles. To verify the model, we performed extensively device simulation for two different collector profiles. Results from the model were compared with those of device simulation. The model derived shows a good agreement with device simulation over a V/sub CB/ bias range of 1-4 V.
Experimental Observation of Energetic Ions Accelerated by Three-dimensional Magnetic Reconnection in a Laboratory Plasma (2002)

Magnetic reconnection is widely believed responsible for heating the solar corona as well as for generating X-rays and energetic particles in solar flares. On astrophysical scales, reconnection in the intergalactic plasma is a prime candidate for a local source (Mpc) of cosmic rays exceeding the Greisen-Zatsepin-Kuzmin cutoff (&SIM;10(19) eV). In a laboratory astrophysics experiment, we have made the first observation of particles accelerated by magnetic reconnection events to energies significantly above both the thermal and the characteristic magnetohydrodynamic energies. These particles are correlated temporally and spatially with the formation of three-dimensional magnetic structures in the reconnection region.
Circularly Polarized Turnstile Antenna for VHF Data Exchange System (VDES) on Satellite (2020)

This paper presents the design and implementation of a circularly polarized turnstile antenna for VHF Data Exchange System (VDES) on satellite. The antenna is designed to satisfy the EIRP requirement to prevent interference as well as to fulfill the link budget based on system requirements over a wide-angle coverage. The antenna is prototyped and measured.
Search pruning in video surveillance systems: Efficiency-reliability tradeoff (2011)

In the setting of computer vision, algorithmic searches often aim to identify an object of interest inside large sets of images or videos. Towards reducing the often astronomical complexity of this search, one can use pruning to filter out objects that are sufficiently distinct from the object of interest, thus resulting in a pruning gain of an overall reduced search space. Motivated by practical computer vision based scenarios such as time-constrained human identification in biometric-based video surveillance systems, we analyze the stochastic behavior of time-restricted search pruning, over large and unstructured data sets which are furthermore random and varying, and where in addition, pruning itself is not fully reliable but is instead prone to errors. In this stochastic setting we apply the information theoretic method of types as well as information divergence techniques to explore the natural tradeoff that appears between pruning gain and reliability, and proceed to study the typical and atypical gainreliability behavior, giving insight on how often pruning might fail to substantially reduce the search space. The result, as is, applies to a plethora of computer vision based applications where efficiency and reliability are intertwined bottlenecks in the overall system performance, and the simplicity of the obtained expressions allows for rigorous and insightful assessment of the pruning gain-reliability behavior in such applications, as well as for intuition into designing general object recognition systems.
Técnicas para la estimación de modelos MEV con muestreo de alternativas (2010)

Reference EPFL-TALK-158242 URL: http://transp-or2.epfl.ch/talks/hurt_u_chile.pdf Record created on 2010-11-25, modified on 2017-10-16
Astronomical X-Ray Optics (2000)

Suprarenal cysts are rare. A case of a 3.5 l cyst incidentally discovered in a 30 year old woman is described. Operative treatment is recommended in order to avoid spontaneous rupture and to exclude malignancy. Endothelial origin can be established by a specific immunohistochemical staining, factor VIII antibody.
ChemInform Abstract: STUDIES ON THE PHYTOALEXINS. XXXVI. SYNTHETIC STUDIES OF RISHITIN AND RELATED D COMPOUNDS. XVI. A GENERAL SYNTHETIC APPROACH TO SPIROVETIVANES. THE SYNTHESIS OF (.+‐.)‐SOLAVETIVONE, (.+‐.)‐HINESOL, AND RELATED COMPOUNDS (1984)

Abstract Die aus dem Anisol (Ia) erhaltenen Diene (IV) bzw. (V) reagieren mit Acrylsäureester (VI) zu Gemischen der Stereoisomeren (VII), die teilweise im Gemisch (als endo‐ bzw. exo‐Verbindungen) zu den Alkoholen (VIII) und (IX) umgesetzt werden (Ausb. abhängig vom Eduktverhältnis).