gebhart/patrepeval huggingface dataset:
Blessing of Dimensionality: High-Dimensional Feature and Its Efficient Compression for Face Verification (2013)

Making a high-dimensional (e.g., 100K-dim) feature for face recognition seems not a good idea because it will bring difficulties on consequent training, computation, and storage. This prevents further exploration of the use of a high dimensional feature. In this paper, we study the performance of a high dimensional feature. We first empirically show that high dimensionality is critical to high performance. A 100K-dim feature, based on a single-type Local Binary Pattern (LBP) descriptor, can achieve significant improvements over both its low-dimensional version and the state-of-the-art. We also make the high-dimensional feature practical. With our proposed sparse projection method, named rotated sparse regression, both computation and model storage can be reduced by over 100 times without sacrificing accuracy quality.
Dynamic and invisible messaging for visual MIMO (2012)

The growing ubiquity of cameras in hand-held devices and the prevalence of electronic displays in signage creates a novel framework for wireless communications. Traditionally, the term MIMO is used for multiple-input multiple-output where the multiple-input component is a set of radio transmitters and the multiple-output component is a set of radio receivers. We employ the concept of visual MIMO where pixels are transmitters and cameras are receivers. In this manner, the techniques of computer vision can be combined with principles from wireless communications to create an optical line-of-sight communications channel. Two major challenges are addressed: (1) The message for transmission must be embedded in the observed display so that the message is hidden from the observer and the electronic display can simultaneously be used for its originally intended purpose (e.g. signage, advertisements, maps); (2) Photometric and geometric distortions during the imaging process corrupt the information channel between the transmitter display and the receiver camera. These distortions must be modeled and removed. In this paper, we present a real-time messaging paradigm and its implementation in an operational visual MIMO optical systems. As part of the system, we develop a novel algorithm for photographic message extraction which includes automatic display detection, message embedding and message retrieval. Experiments show that the system achieves an average accuracy of 94.6% at the bitrate of 6222.2 bps.
Active hair-bundle motility harnesses noise to operate near an optimum of mechanosensitivity (2004)

The ear relies on nonlinear amplification to enhance its sensitivity and frequency selectivity to oscillatory mechanical stimuli. It has been suggested that this active process results from the operation of dynamical systems that operate in the vicinity of an oscillatory instability, a Hopf bifurcation. In the bullfrog's sacculus, a hair cell can display spontaneous oscillations of its mechanosensory hair bundle. The behavior of an oscillatory hair bundle resembles that of a critical oscillator. We present here a theoretical description of the effects of intrinsic noise on active hair-bundle motility. An oscillatory instability can result from the interplay between a region of negative stiffness in the bundle's force-displacement relation and the Ca(2+)-regulated activity of molecular motors. We calculate a state diagram that describes the possible dynamical states of the hair bundle in the absence of fluctuations. Taking into account thermal fluctuations, the stochastic nature of transduction channels' gating, and of the forces generated by molecular motors, we discuss conditions that yield a response function and spontaneous noisy movements of the hair bundle in quantitative agreement with previously published experiments. We find that the magnitude of the fluctuations resulting from the active processes that mediate mechanical amplification remains just below that of thermal fluctuations. Fluctuations destroy the phase coherence of spontaneous oscillations and restrict the bundle's sensitivity as well as frequency selectivity to small oscillatory stimuli. We show, however, that a hair bundle studied experimentally operates near an optimum of mechanosensitivity in our state diagram.
Fragments produced by cleavage of λ deoxyribonucleic acid with the Hemophilus parainfluenzae restriction enzyme Hpa II (1973)

One of the restricting enzymes extracted from Hemophilus parainfluenzae, HpaII, is shown to cleave lambda DNA at more than 50 sites. The resulting DNA fragments have been prepared from a variety of deletion or deletion-substitution mutants of lambda, and analyzed by polyacrylamide gel electrophoresis. The major DNA segments (larger than 0.3 Mdalton) produced by digestion of lambda DNA have been mapped and many of the cleavage sites in the immunity region, in the b2 region, and to the right of the immunity region have been identified.
Secretion of Vascular Endothelial Growth Factor in Adenocarcinoma and Squamous Cell Carcinoma of the Uterine Cervix (1999)

In Brief Objective To determine whether major differences in vascular endothelial growth factor secretion exist between adenocarcinomas of the uterine cervix compared with squamous cell carcinomas. Methods The secretion of vascular endothelial growth factor by eight fresh cervical cancer cell preparations (four adenocarcinomas and four squamous cell carcinomas) and four established squamous cell lines was evaluated using a sensitive enzyme-linked immunosorbent assay in vitro. Results All cervical tumors secreted significant amounts of vascular endothelial growth factor, and no significant differences between fresh and established squamous cell lines were detectable. In contrast, a highly significant difference in vascular endothelial growth factor secretion was noted between fresh adenocarcinomas (mean = 2712, range between 1700 to 3500 pg/mL/105 cells/48 hours) when compared with fresh squamous (mean = 575, range between 200 to 950 pg/mL/105 cells/48 hours) or established squamous cervical carcinoma cell lines (mean = 712, range between 400 to 1000 pg/mL/105 cells/48 hours) (F-test, P ≤ .001). Conclusion These data strongly suggest that major differences in the secretion of vascular endothelial growth factor exist between squamous cell carcinoma and adenocarcinomas of the uterine cervix. Therefore, at least some of the differences in the natural biologic behavior of these two histologic types of cervical cancer, including the propensity for earlier lymphatic and hematogenous metastasis as well as the lower response to radiation treatment, could be related to major differences in the secretion of this powerful angiogenic and immunosuppressive cytokine. Cervical adenocarcinomas secrete significantly higher amounts of the angiogenic and immunosuppressive cytokine vascular endothelial growth factor compared with squamous cell cervical cancers.
Non‐aqueous Synthesis of Isotropic and Anisotropic Actinide Oxide Nanocrystals (2012)

Nano is everywhere but actinides are the forgotten elements of the nanoworld! Isotropic faceted uranium oxide nanodots and anisotropic thorium oxide nanorods were synthesized. These nano-objects are very well crystallized and monodisperse. The characteristics of the actinide oxide nanocrystals can be controlled by tuning the reactivity of the starting actinide precursors. Such results pave the way for the synthesis of transuranium-based nano-objects. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
Optimised planar integrated L-C-T components (2002)

A planar integrated LCT structure (resonant inductor, resonant capacitor, output transformer) is described for use in series resonant converters. The construction and design of the structure is described, and design equations derived. The structure is analysed from a volumetric point of view, some of the limits of the technology are discussed. Experimental results of an LCT structure for a 5 kVA converter are presented.
Miniaturized Flexible Temperature Sensor (2007)

We realize a flexible temperature sensor based on a micropatterned thin-film platinum resistor. The sensor is situated at the end of a 100-mum-wide and 7-cm-long probe. The latter consists of a biocompatible high-temperature-resistant polyimide (U-Varnish-S, UBE Industries, Tokyo, Japan) in which the platinum resistor and the electrical contact leads are embedded. The sensor is operational from 0degC up to 400degC and has a time constant of less than 80 ms. Such a sensor can potentially be used to characterize the thermo-ablation process of tumors using hot steam injection via a microtube.
Radiation Pattern Prediction for Metasurfaces: A Neural Network-Based Approach (2021)

As the current standardization for the 5G networks nears completion, work towards understanding the potential technologies for the 6G wireless networks is already underway. One of these potential technologies for the 6G networks is reconfigurable intelligent surfaces. They offer unprecedented degrees of freedom towards engineering the wireless channel, i.e., the ability to modify the characteristics of the channel whenever and however required. Nevertheless, such properties demand that the response of the associated metasurface is well understood under all possible operational conditions. While an understanding of the radiation pattern characteristics can be obtained through either analytical models or full-wave simulations, they suffer from inaccuracy and extremely high computational complexity, respectively. Hence, in this paper, we propose a neural network-based approach that enables a fast and accurate characterization of the metasurface response. We analyze multiple scenarios and demonstrate the capabilities and utility of the proposed methodology. Concretely, we show that this method can learn and predict the parameters governing the reflected wave radiation pattern with an accuracy of a full-wave simulation (98.8–99.8%) and the time and computational complexity of an analytical model. The aforementioned result and methodology will be of specific importance for the design, fault tolerance, and maintenance of the thousands of reconfigurable intelligent surfaces that will be deployed in the 6G network environment.
“Hot spot” contention and combining in multistage interconnection networks (1985)

The combining of messages within a multistage switching network has been proposed to reduce memory contention in highly parallel shared-memory multiprocessors, especially for shared lock and synchronization data. A quantitative investigation of the performance impact of such contention and the effectiveness of combining in reducing this impact is reported. The effect of a nonuniform traffic pattern consisting of a single hot spot of higher access rate superimposed on a background of uniform traffic was investigated. The potential degradation due to even moderate hot spot traffic was found to be very significant, severely degrading all memory access, not just access to shared lock locations, due to an effect the authors call tree saturation. The technique of message combining was found to be an effective means of eliminating this problem if it arises due to lock or synchronization contention.
The Bioartificial Kidney in the Treatment of Acute Kidney Injury (2009)

Acute kidney injury (AKI) continues to have an exceedingly high mortality rate, despite advances in dialysis technology. Current dialysis therapies replace only the filtration function of the kidney, not the critical transport, metabolic, and endocrine functions of renal tubule cells. Replacement of these additional functions would provide more complete AKI therapy and thereby change the natural history of this disease process. A renal tubule assist device (RAD) containing living renal proximal tubule cells has been successfully engineered and has demonstrated differentiated absorptive, metabolic, and endocrine functions of normal kidney in vitro and ex vivo in animal experiments. The addition of the RAD containing human cells to conventional continuous renal replacement therapy has been shown in preclinical and clinical studies to have the potential to advance AKI treatment, from enhancing renal clearance to providing more complete renal replacement therapy. This "bioartificial kidney" demonstrates metabolic activity with systemic effects and improvement of survival in patients with AKI and multiorgan failure. It also appears to influence systemic leukocyte activation and the balance of inflammatory cytokines, suggesting that cell therapy by use of the RAD may improve morbidity and mortality by altering the proinflammatory state of patients with renal failure. In addition to providing cellular metabolic function, technologies directed toward disrupting systemic inflammatory response may well enhance the clinical outcome of critically ill patients in the future. Innovative approaches to intensive renal care such as the RAD may break the mold of current institutional dialysis therapies and provide numerous opportunities to develop lifesaving technologies.
Assessing population-level symptoms of anxiety, depression, and suicide risk in real time using NLP applied to social media data (2020)

Prevailing methods for assessing populationlevel mental health require costly collection of large samples of data through instruments such as surveys, and are thus slow to reflect current, rapidly changing social conditions. This constrains how easily populationlevel mental health data can be integrated into health and policy decision-making. Here, we demonstrate that natural language processing applied to publicly-available social media data can provide real-time estimates of psychological distress in the population (specifically, English-speaking Twitter users in the US). We examine population-level changes in linguistic correlates of mental health symptoms in response to the COVID-19 pandemic and to the killing of George Floyd. As a case study, we focus on social media data from healthcare providers, compared to a control sample. Our results provide a concrete demonstration of how the tools of computational social science can be applied to provide real-time or near-real-time insight into the impact of public events on mental health.
Computer acquisition of frontal analysis chromatographic data for surface area determination (1971)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComputer acquisition of frontal analysis chromatographic data for surface area determinationMichael F. Burke and D. G. AckermanCite this: Anal. Chem. 1971, 43, 4, 573–578Publication Date (Print):April 1, 1971Publication History Published online1 May 2002Published inissue 1 April 1971https://pubs.acs.org/doi/10.1021/ac60299a012https://doi.org/10.1021/ac60299a012research-articleACS PublicationsRequest reuse permissionsArticle Views31Altmetric-Citations4LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
<title>Autonomous remote monitoring system for landslides</title> (2002)

There is a general tendency in systems for environmental monitoring towards ever more automatic and autonomous operation. Moreover, technologies and instruments are available to reliably interconnect distributed, disparate components. This allows the measurement, logging, data processing and interpretation activities to be carried out by separate units at different locations in near real-time. Building on the results of a previous research and development project at SUPSI, which focused on movement monitoring with GPS, the system has been generalized to accommodate a range of other sensors, thus rendering it even more interesting for geotechnical applications. In particular a laser distance meter and a robotized theodolite have been integrated. First results confirm an expected increase in robustness of the combined measurement network, which is particularly important in unfavorable stand-alone GPS reception conditions. Due to the modular architecture of the system, other sensor types, ranging from simple analog or digital sensors to complex measuring instruments may be supported with minimal effort. Measurements are transmitted via cellular or point-to-point radio links to a control station, which provides for post-processing and system management. The control station may be remotely accessed via an Internet connection. The system takes advantage of a standard and flexible database structure which has been tailored to measurement and monitoring projects using different sensors. The system represents an architecture for remote monitoring tasks requiring a high degree of autonomy, reliability and automation. The solution can be advantageously applied to remote, near real-time measurements of low dynamics movements.
Ellipsometric microscopy (2000)

We modified an optical microscope to enable quantitative ellipsometric studies with 1 nm height and 0.9 mathrmμm lateral resolution. A beam of polarised light impinging on the object under a shallow angle of incidence is generated by focusing a pinhole into an off-axis point in the back focal plane of a high-power microscope objective. The entire image of the object is focused which greatly reduces stray light. In addition, this enables a drastic reduction of the measuring time. For thicknesses of organic films exceeding 20 nm both the film thickness and its refractive index may be determined simultaneously.
Metasurface Based Spin‐Selective Wollaston‐and‐Rochon‐Prism‐Like Circularly Polarized Beam Splitter (2022)

Abstract Multifunctional ultra‐thin devices which can manipulate the wavefront in a desired manner are preferably required for compact systems. In recent years, metasurfaces have been treated as an intuitive and powerful platform to expand the operational capacity of planar devices. In this work, a non‐interleaved device based on metasurfaces is proposed which utilizes transmitted co‐and‐cross polarization channels of circularly polarized (CP) light to design a spin‐switchable Wollaston‐and‐Rochon‐prism‐like CP beam splitter. In addition, this scheme facilitates the design of meta‐hologram that can decrypt two independent holographic images, one on each CP transmitted channel, under the right‐handed circularly polarized light. While, under the left‐handed circularly polarized light, the co‐polarization channel reconstructs the holographic image and no image appears on the cross‐polarization channel. The intended approach provides a promising route which will find application in information encryption/decryption, multichannel communication systems, and imaging.
A Real-Time Error Detection (RTD) Architecture and Its Use for Reliability and Post-Silicon Validation for F/F Based Memory Arrays (2022)

This work proposes in-situ Real-Time Error Detection (RTD): embedding hardware in a memory array for detecting a fault in the array when it occurs, rather than when it is read. RTD breaks the serialization between data access and error-detection and, thus, it can speed-up the access-time of arrays that use in-line error-correction. The approach can also reduce the time needed to root-cause array related bugs during post-silicon validation and product testing. The paper introduces a two-dimensional error-correction scheme based on RTD and, also, presents a proactive error-correction method that combines RTD with demand-scrubbing. The work describes how to build RTD into a memory array with flip-flops to track in real-time the column-parity. A comparison of the proposed two-dimensional ECC scheme, as compared to single-error-correction-double-error-detection, shows that the RTD design has comparable error-detection-and-correction strength and, depending on the array dimensions and configuration, RTD reduces access time by 4% to 26% at an area and power overhead (negative is a reduction) between -7% to 33% and -42% to 86% respectively.
Heat Transfer in Nanofluids 2013 (2014)

1 Dipartimento di Ingegneria Aerospaziale e Meccanica, Seconda Universita degli Studi di Napoli, Viale Beneduce 10, Via Roma 29, 81031 Aversa, Italy 2 School of Engineering, Rutgers, The State University of New Jersey, 98 Brett Road, Piscataway, NJ 08854-8058, USA 3 Laboratoire Modelisation et Simulation Multi Echelle, UMR 8208 CNRS, Universite Paris-Est Marne-La-Vallee, Bâtiment Lavoisier, 5 Boulevard Descartes, 7454 Marne-La-Vallee Cedex 2, France 4Department of Mechanical Engineering, University of California, Riverside, A363 Bourns Hall, Riverside, CA 92521-0425, USA 5Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong
PS29 Measurement of Acoustic Properties of Coating on Steel Plate by Acoustic Resonant Spectroscopy and Imaging of Distribution of Coating Thickness (2012)

In this research, a technique for characterizing thin coating on steel plate and imaging the distribution of coating thickness by utilizing acoustic resonant phenomenon is reported. First, acoustic properties (acoustic impedance, sound velocity and density) of thin coating were measured by the acoustic resonant spectroscopy technique. Using the measured sound velocity of the coating, the thickness distribution of the back side coating of the sample was successfully obtained by scanning the focused-type ultrasonic transducer.
Dermatitis in Machinists: A Retrospective Study (1993)

Background: Over the years, studies have been performed to analyze contact dermatitis in metalworkers. Results for industrial workers in general have shown that about 25% clear, 50% improve, and 25% do no better or worsen. This retrospective study looked at the machinists who were treated in the occupational dermatology clinic at the Hershey Medical Center to evaluate their presentation, patch test results, diagnosis, and prognosis. In addition, we looked at the usefulness of patch testing in the subjects' outcome. A total of 20 machinists' charts were reviewed. Results: Five workers had allergic contact dermatitis, five had irritant contact dermatitis, four had endogenous dermatitis, and six had mixed dermatitis. Conclusions: We found that 25% of our workers cleared (5 of 20), 55% improved (11 of 20), and 20% were unable to be reached to further evaluate their prognosis (4 of 20). The results of patch testing seemed to have aided the improvement or clearance of dermatitis in seven cases.