gebhart/patrepeval huggingface dataset:
[Frequency analysis of the single beat electrocardiogram in the diagnosis of ventricular tachycardias]. (1986)

High frequency components of the surface electrocardiogram have been found in patients with sustained ventricular tachycardia. However, evaluation of these signals has required signal averaging and highly sophisticated filter techniques. In order to overcome the limitations of averaging and apriori filtering, we performed a single beat analysis of the total and terminal QRS and ST-segment of surface electrocardiograms with fast Fourier transformation (512 points, Blackman-Harris window) after high gain, low noise amplification (0-300 Hz). Fourteen patients with previous myocardial infarction and spontaneous and electrically inducible sustained ventricular tachycardia, twelve patients with previous infarction but without clinical arrhythmias, and fifteen control subjects were studied. The frequency content of the terminal QRS, expressed as area under the spectral plot, was significantly lower in patients with ventricular tachycardia compared to patients without arrhythmias (p less than 0.01). The frequency content of the ST-segment in the range 10 to 40 Hz was higher in patients with ventricular tachycardia than in patients without arrhythmias and control subjects (p less than 0.01). The spectral representation at very low (0-10 Hz) and high frequencies (greater than 60 Hz) of the ST-segment and analysis of the total QRS did not allow separation of patients with ventricular tachycardia. Thus, spectral analysis of single beat electrocardiograms offers promise for the non-invasive identification of patients prone to sustained ventricular tachycardia due to coronary artery disease.
Non-leaching antimicrobial surfaces through polydopamine bio-inspired coating of quaternary ammonium salts or an ultrashort antimicrobial lipopeptide (2011)

Bacterial fouling on surfaces significantly increases the resistance of bacteria toward antibiotics, which leads to medical complications and a corresponding financial burden. Here, we report on a general and robust technique for facile modification of various surfaces with different antibacterial agents. Our approach in this study was inspired by the strong adhesion of mussel adhesion proteins (MAPs) to many types of surfaces, including metals, polymers, and inorganic materials. Thus, glass and polymeric slides were dip-coated with dopamine, as a MAP mimic, and the resulting surfaces were characterized. The reactivity of dopamine-coated surfaces toward nucleophilic addition was then confirmed by reacting them with fluorescent probes containing either a free amino or a free thiol group. Laser scanning confocal microscopy (LSCM), X-ray photoelectron spectroscopy (XPS), confocal Raman microscopy, matrix-assisted laser desorption/ionization-time of flight (MALDI-TOF) mass spectroscopy, and cyclic voltammetry studies collectively suggested that the probes had covalently attached to the surfaces. Fabrication of dopamine-coated surfaces with an antibacterial quaternary amine or an ultrashort lipopeptide analog generated surfaces that effectively kill Escherichia coli and Staphylococcus aureuscells on contact. Moreover, minimal leaching of the fabricated agent was detected after prolonged incubation. This technique could be further developed to a “paint-like” or self-assembling monolayer-like procedure for the preparation of antibacterial surfaces on various materials.
Milieuprofiel van gebouwelementen, details per variant: 8. Raam (2013)

Om inzicht te krijgen in de Milieugerelateerde Materiaalprestatie van Gebouwelementen (MMG) werd een databank ontwikkeld waarbij de MMG-bepalingsmethode aan de basis ligt voor het berekenen van de milieuprofielen. Deze publicatie is een gedetailleerde aanvulling bij de OVAM-publicatie ‘Milieuprofiel van gebouwelementen’ en geeft een meer uitgebreide analyse van alle doorgerekende varianten ‘raam’.
Meta-analysis and profiling of cardiac expression modules (2008)

Heart failure is a complex, complicated disease that is not yet fully understood. We used the Module Map algorithm to uncover groups of genes that have a similar pattern of expression under various conditions of heart stress. These groups of genes are called modules and may serve as computational predictions of biological pathways for the various clinical situations. The Module Map algorithm allows a large-scale analysis of genes expressed. We applied this algorithm to 700 different mouse experiments downloaded from the Gene Expression Omnibus database, which identified 884 modules. The analysis reconstructed partially known principles that play a role in governing the response of heart to stress, thus demonstrating the strength of the method. We have shown a role of genes related to the immune system in conditions of heart remodeling and failure. We have also shown changes in the expression of genes involved with energy metabolism and changes in the expression of contractile proteins of the heart following myocardial infarction. When focusing on another module we noted a new correlation between genes related to osteogenesis and heart failure, including Runx2 and Ahsg, whose role in heart failure was unknown so far. Despite a lack of prior biological knowledge, the Module Map algorithm has reconstructed known pathways, which demonstrates the strength of this new method for analyzing gene profiles related to clinical phenomenon. The method and the analysis presented are a new avenue to uncover the correlation of clinical conditions to the molecular level.
Lattice decoded nested codes achieve the Poltyrev exponent (2003)

We analyse the random coding error exponent and provide a construction for nested lattice codes achieving this exponent.
Raman induced wavelength conversion in scaled Silicon waveguides (2004)

Parametric Raman nonlinearities in Silicon waveguides is used to demonstrate wavelength conversion from Stokes to anti-Stokes channels. The effects of two photon absorption and free carrier nonlinear losses on the conversion process have also been analyzed. We find that scaling down the waveguide dimensions to submicron sizes is advantageous in terms of increasing the Raman nonlinearities and reducing the carrier lifetime and hence nonlinear absorption.
Hierarchical Explanation-Based Reinforcement Learning (1997)

Explanation-Based Reinforcement Learning (EBRL) was introduced by Dietterich and Flann as a way of combining the ability of Reinforcement Learning (RL) to learn optimal plans with the generalization ability of Explanation-Based Learning (EBL) (Dietterich &amp;amp; Flann, 1995). We extend this work to domains where the agent must order and achieve a sequence of subgoals in an optimal fashion. Hierarchical EBRL can effectively learn optimal policies in some of these sequential task domains even when the subgoals weakly interact with each other. We also show that when a planner that can achieve the individual subgoals is available, our method converges even faster. 1 Introduction Reinforcement Learning (RL) has emerged as the method of choice for building autonomous agents that improve their performance with experience. One obstacle to scaling this approach to large problems is the lack of a robust and justifiable method to generalize from one experience to another. Dietterich and Flann (Dietter...
Taxonomy of Buying Decision Approaches (1993)

The author reports the development of a classification scheme of buying patterns and situations. Unlike previous conceptual schemes, it consists of six prototypical “buying decision approaches” identified through an empirically based taxonomy development procedure. A mix of underlying buying activities distinguishes the categories: search for information, use of analysis techniques, focus on proactive issues, and reliance on control mechanisms. The use of a particular buying decision approach depends on four situational characteristics: purchase importance, task uncertainty, extensiveness of choice, and perceived buyer power. The findings reveal some patterns that are similar to previous classification schemes, but new variations allow for a conceptual extension of the literature. The resulting framework is useful to marketing managers, who can view their customer segments in terms of the categories in the taxonomy. Further, it provides a tool by which sales representatives can develop adaptive selling approaches based on a small set of buying situations and corresponding buying decision approaches.
Merging Thermal And Visual Images By A Contrast Pyramid (1989)

Integration of images from different sensing modalities can produce information that cannot be obtained by viewing the sensor outputs separately and consecutively. This paper introduces a hierarchical image merging scheme based on a multiresolution contrast decomposition (the ratio of a low-pass pyramid). The composite images produced by this scheme preserve those details from the input images that are most relevant to visual perception. The method is tested by merging parallel registered thermal and visual images. The results show that the fused images present a more detailed representation of the depicted scene. Detection, recognition, and search tasks may therefore benefit from this new image representation.
Extensions to PCEP for Temporal LSP (2016)

For existing MPLS LSP tunnel services, it is hard for LSP tunnels to
be booked in advance. In addition, once an LSP tunnel is set up, it is
assumed to consume a certain amount of resources such as link
bandwidth forever. Temporal LSP tunnel services (TTS) provides an easy
way for us to book temporal LSP tunnels in advance. More importantly,
a temporal LSP is an LSP with one or more time intervals and it is
assumed to consume the resources and carry traffic only in these time
intervals. This document specifies extensions to PCEP for computing a
path for a temporal LSP, initiating and maintaining a temporal LSP
with a sequence of time intervals, during each of which the LSP
carries traffic.
Alternative to donor-acceptor pseudocontact-shift nuclear magnetic resonance shift reagents (1971)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAlternative to donor-acceptor pseudocontact-shift nuclear magnetic resonance shift reagentsMalcolm E. Kenney and Joe E. MaskaskyCite this: J. Am. Chem. Soc. 1971, 93, 8, 2060–2062Publication Date (Print):April 1, 1971Publication History Published online1 May 2002Published inissue 1 April 1971https://pubs.acs.org/doi/10.1021/ja00737a043https://doi.org/10.1021/ja00737a043research-articleACS PublicationsRequest reuse permissionsArticle Views118Altmetric-Citations29LEARN 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
Retraction notice to “Bioartificial grafts for transmural myocardial restoration: a new cardiovascular tissue culture concept” [Eur. J. Cardiothorac. Surg. 24 (2003) 906–911] (2011)

J. Thorac. Cardiovasc. Surg. 2002;124(1):63—9 (doi:10.1067/mtc.2002.121971). Eur. J. Cardiothorac. Surg. 2002;22(2):238—43 (doi:10.1016/S1010-7940(02)00256-7). Tissue Eng. 2003 9(3):517—23 (doi:10.1089/107632703322066697). Biomaterials 2003 24(27):5009—14 (doi:10.1016/S0142-9612(03)00429-0). One of the conditions of submission of a paper for publication is that authors declare explicitly that their work is original and has not been published elsewhere. Re-use of any data should be appropriately cited. As such this article represents a severe abuse of the scientific publishing system. We apologize to readers of the journal. www.elsevier.com/locate/ejcts European Journal of Cardio-thoracic Surgery 40 (2011) 1555
High-resolution, high-contrast ultrasound imaging using a prototype dual-frequency transducer in-vitro and in-vivo studies (2009)

Recently, there has been a great interest in the capabilities of high-resolution ultrasound imaging. One of the applications is imaging blood vessels to assess tumor growth and response to therapy. Due to their nonlinear response, microbubble contrast agents scatter ultrasound energy at frequencies higher and lower than the imaging frequency. To maximize ultrasound scatter, the imaging frequency should be near the microbubble resonant frequency. Previously, this was not possible with high-frequency imaging systems because most contrast agents resonate at 1-10 MHz and the systems pulse at higher frequencies. We have developed a unique dual-frequency confocal transducer which excites microbubbles at low frequencies, near their resonance, and detects their emitted high-frequency energy at greater than 15 MHz. With this imaging approach, we have attained an average improvement in contrast-to-tissue ratio of 12.3 dB over standard b-mode imaging for MI between 0.5 and 0.65 with spatial resolution near that of the high-frequency element (30 MHz). This method is less susceptible to tissue motion corruption than power-Doppler because it does not rely on signal-decorrelation. Because of this, dual-frequency imaging can be used for flow imaging without respiratory gating.
Sporicidal efficacy of pH-adjusted bleach for control of bioburden on production facility surfaces (2013)

pH-adjusted bleach was one of the agents used to disinfect contaminated public buildings in the USA following the 2001 bioterrorist attack with Bacillus anthracis spores. A USEPA fact sheet describes the preparation of pH-adjusted bleach by combining diluted sodium hypochlorite (NaOCl) with a controlled amount of 5 % acetic acid. This paper reports a modification of this procedure to qualify the use of pH-adjusted bleach for routine disinfection of cleanroom surfaces in pharmaceutical manufacturing facilities whenever a short contact time is desirable or there is a need for enhanced germicidal or sporicidal activity. Adjustment of pH was obtained reproducibly with either acetic acid or HCl, confirming the feasibility of developing standard procedures for the controlled addition of acid to diluted NaOCl solutions without compromising operator safety and convenience. Efficacy testing using spores from an in-house isolate of Bacillus pumilus confirmed that NaOCl solutions in the pH 5-8 range have much greater sporicidal activity on surfaces than do unadjusted alkaline solutions (pH > 11). With a contact time of 0.5 min, the log10 reduction in spore viable counts was >5.4 for the five representative surfaces tested relative to untreated controls. Solutions of pH-adjusted NaOCl are known to be less stable than unadjusted alkaline solutions. Stability studies were performed by monitoring sporicidal efficacy, level of free available chlorine (FAC), and pH. Testing included several NaOCl concentrations and adjustment to different starting pHs. The efficacy of pH-adjusted solutions persisted in open containers for at least 12 h even though some FAC degradation occurred. In addition, solutions of 0.29 or 0.50 % NaOCl stored at room temperature protected from light retained efficacy for at least 4 weeks, indicating that short-term storage of solutions is possible following pH adjustment. The inorganic chemical degradation of pH-adjusted NaOCl solutions generates chlorate ion, an undesirable by-product. A comparison of chemical stability for 0.12, 0.25, and 0.50 % NaOCl solutions adjusted to different initial pHs indicated that the least chlorate formation occurred with 0.12 % NaOCl.
Broadband-CDMA overlay (2002)

A broadband code division multiple access (B-CDMA) scheme is presented that will overlay the existing cellular telephone spectrum (825/spl sim/894 MHz). The overlay will provide additional capacity to the network while allowing high-quality voice and high spread data services to coexist with cellular services. The advantages of using B-CDMA in the fading environment are analyzed. The absence of mutual interference to and from the B-CDMA overlay is shown.
TPC Parallelization: Predictive Adaptation and Dynamic Correction to Reduce Tail Latency in Web Search (2016)

In interactive services such as web search, recommendations, games and finance, reducing the tail latency is crucial to provide fast response to every user. Using web search as a driving example, we systematically characterize interactive workload to identify the opportunities and challenges for reducing tail latency. We find that the workload consists of mainly short requests that do not benefit from parallelism, and a few long requests which significantly impact the tail but exhibit high parallelism speedup. This motivates estimating request execution time, using a predictor, to identify long requests and to parallelize them. Prediction, however, is not perfect; a long request mispredicted as short is likely to contribute to the server tail latency, setting a ceiling on the achievable tail latency. We propose TPC, an approach that combines prediction information judiciously with dynamic correction for inaccurate prediction. Dynamic correction increases parallelism to accelerate a long request that is mispredicted as short. TPC carefully selects the appropriate target latencies based on system load and parallelism efficiency to reduce tail latency. We implement TPC and several prior approaches to compare them experimentally on a single search server and on a cluster of 40 search servers. The experimental results show that TPC reduces the 99th- and 99.9th-percentile latency by up to 40% compared with the best prior work. Moreover, we evaluate TPC on a finance server, demonstrating its effectiveness on reducing tail latency of interactive services beyond web search.
Immunoglobulin G4−Related Sclerosing Disease Mimicking Invasive Tumor in the Nasal Cavity and Paranasal Sinuses (2011)

IgG4RSD affecting the nasal cavity and paranasal sinuses is extremely rare. A 71-year-old man presented with an invasive mass in the nasal cavity and paranasal sinuses that was confirmed by immunostaining to be IgG4RSD. The occurrence of this disease in the nasal cavity and paranasal sinuses can resemble a malignant tumor on diagnostic imaging.
Low-Temperature Etching of Cu by Hydrogen-Based Plasmas (2010)

A simple, plasma-based, low-temperature etch process was developed for the subtractive etching of copper (Cu) films. Hydrogen (H2) plasma etching of Cu thin films was performed in an inductively coupled plasma (ICP) reactor at temperatures below room temperature. This process achieved anisotropic Cu features and an etch rate of ∼13 nm/min. Cu etch rate and patterning results were consistent with an etch process that involved both chemical and physical characteristics. This conclusion was reached by consideration of the plasma as a source of ultraviolet photons, ions, and hydrogen atoms, which promote Cu etching.
The MHC Class II Cofactor HLA-DM Interacts with Ig in B Cells (2014)

B cells internalize extracellular Ag into endosomes using the Ig component of the BCR. In endosomes, Ag-derived peptides are loaded onto MHC class II proteins. How these pathways intersect remains unclear. We find that HLA-DM (DM), a catalyst for MHC class II peptide loading, coprecipitates with Ig in lysates from human tonsillar B cells and B cell lines. The molecules in the Ig/DM complexes have mature glycans, and the complexes colocalize with endosomal markers in intact cells. A larger fraction of Ig precipitates with DM after BCR crosslinking, implying that complexes can form when DM meets endocytosed Ig. In vitro, in the endosomal pH range, soluble DM directly binds the Ig Fab domain and increases levels of free Ag released from immune complexes. Taken together, these results argue that DM and Ig intersect in the endocytic pathway of B cells with potential functional consequences.
A high performance two degree-of-freedom kinesthetic interface (1991)

This summary focuses on the kinesthetic interface of a virtual environment system that was developed at the Newman Laboratory for Biomechanics and Human Rehabilitation at M.I.T. for the study of manual control in both motorically impaired and able-bodied individuals.
Evolving Fuzzy Rules for Anomaly Detection in Data Streams (2014)

Evolvable Takagi-Sugeno (T-S) models are fuzzy-rule-based models with the ability to continuously learn and adapt to incoming samples from data streams. The model adjusts both premise and consequent parameters to enhance the performance of the model. This paper introduces a new methodology for the estimation of the premise parameters in the evolvable T-S (eTS) model. Incremental updates for the weighted sample mean and inverse of the covariance matrix enable us to construct an evolvable fuzzy rule base that is used to detect outliers and regime changes in the input stream. We compare our model with Angelov's eTS+ model with artificial and real data.
Strain mapping for the semiconductor industry by dark-field electron holography and nanobeam electron diffraction with nm resolution (2010)

There is a requirement of the semiconductor industry to measure strain in semiconductor devices with nm-scale resolution. Here we show that dark-field electron holography and nanobeam electron diffraction (NBED) are both complementary techniques that can be used to determine the strain in these devices. We show two-dimensional strain maps acquired by dark holography and line profiles that have been acquired by NBED of recessed SiGe sources and drains with a variety of different gate lengths and Ge concentrations. We have also used dark-field electron holography to measure the evolution in strain during the silicidation process, showing that this can reduce the applied uniaxial compressive strain in the conduction channel by up to a factor of 3.
Filtered Search for Submodular Maximization with Controllable Approximation Bounds (2015)

Most existing submodular maximization algorithms provide theoretical guarantees with approximation bounds. However, in many cases, users may be interested in an anytime algorithm that can offer a flexible tradeoff between computation time and optimality guarantees. In this paper, we propose a filtered search (FS) framework that allows the user to set an arbitrary approximation bound guarantee with a “tunable knob”, from 0 (arbitrarily bad) to 1 (globally optimal). FS naturally handles monotone and nonmonotone functions as well as unconstrained problems and problems with cardinality, matroid, and knapsack constraints. Further, it can also be applied to (non-negative) nonsubmodular functions and still gives controllable approximation bounds based on their submodularity ratio. Finally, FS encompasses the greedy algorithm as a special case. Our framework is based on theory in A∗ search, but is substantially more efficient because it only requires heuristics that are critically admissible (CA) rather than admissible—a condition that gives more effective pruning and is substantially easier to implement.