gebhart/patrepeval huggingface dataset:
Modeling arterial pulse waves in healthy aging: a database for in silico evaluation of hemodynamics and pulse wave indexes (2019)

The arterial pulse wave (PW) is a rich source of information on cardiovascular (CV) health. It is widely measured by both consumer and clinical devices. However, the physical determinants of the PW are not yet fully understood, and the development of PW analysis algorithms is limited by a lack of PW data sets containing reference CV measurements. Our aim was to create a database of PWs simulated by a computer to span a range of CV conditions, representative of a sample of healthy adults. The typical CV properties of 25-75 yr olds were identified through a literature review. These were used as inputs to a computational model to simulate PWs for subjects of each age decade. Pressure, flow velocity, luminal area, and photoplethysmographic PWs were simulated at common measurement sites, and PW indexes were extracted. The database, containing PWs from 4,374 virtual subjects, was verified by comparing the simulated PWs and derived indexes with corresponding in vivo data. Good agreement was observed, with well-reproduced age-related changes in hemodynamic parameters and PW morphology. The utility of the database was demonstrated through case studies providing novel hemodynamic insights, in silico assessment of PW algorithms, and pilot data to inform the design of clinical PW algorithm assessments. In conclusion, the publicly available PW database is a valuable resource for understanding CV determinants of PWs and for the development and preclinical assessment of PW analysis algorithms. It is particularly useful because the exact CV properties that generated each PW are known.<b>NEW & NOTEWORTHY</b> First, a comprehensive literature review of changes in cardiovascular properties with age was performed. Second, an approach for simulating pulse waves (PWs) at different ages was designed and verified against in vivo data. Third, a PW database was created, and its utility was illustrated through three case studies investigating the determinants of PW indexes. Fourth, the database and tools for creating the database, analyzing PWs, and replicating the case studies are freely available.
The Mustard Oil of Rape Seed, Allylcarbinyl Isothiocyanate, and Synthetic Isomers (1955)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Mustard Oil of Rape Seed, Allylcarbinyl Isothiocyanate, and Synthetic IsomersMartin G. Ettlinger and Joe E. HodgkinsCite this: J. Am. Chem. Soc. 1955, 77, 7, 1831–1836Publication Date (Print):April 1, 1955Publication History Published online1 May 2002Published inissue 1 April 1955https://pubs.acs.org/doi/10.1021/ja01612a035https://doi.org/10.1021/ja01612a035research-articleACS PublicationsRequest reuse permissionsArticle Views1006Altmetric-Citations55LEARN 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
Output regulation for nonlinear uncertain systems (2005)

A control strategy proposed by the authors in order to reduce the effect of the chattering phenomenon in the control of uncertain dynamic systems is extended to the case of the incomplete availability of system state. The proposed procedure is described by considering the regulation problem (the extension to the tracking problem is straightforward) of uncertain second-order nonlinear systems.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Monolithic Schottky-collector resonant tunnel diode oscillator arrays to 650 GHz (1997)

We report monolithic array oscillators incorporating Schottky-collector resonant tunnel diodes (SRTD's). In the SRTD, a 0.1-μm width Schottky collector contact provides a greatly reduced device series resistance, resulting in an estimated 2.2 THz maximum frequency of oscillation. A 64-element oscillator array oscillated at 650 GHz while a 16-element array produced 28 μW at 290 GHz.
Roundabout 4 Is Expressed on Hematopoietic Stem Cells and Potentially Involved in the Niche-Mediated Regulation of the Side Population Phenotype (2008)

Roundabout (Robo) family proteins are immunoglobulin-type cell surface receptors that are expressed predominantly in the nervous system. The fourth member of this family, Robo4, is distinct from the other family members in that it is expressed specifically in endothelial cells. In this study, we examined the expression of Robo4 in hematopoietic stem cells (HSCs) and its possible role in HSC regulation. Robo4 mRNA was specifically expressed in murine HSCs and the immature progenitor cell fraction but not in lineage-positive cells or differentiated progenitors. Moreover, flow cytometry showed a correlation between higher expression of Robo4 and immature phenotypes of hematopoietic cells. Robo4(high) hematopoietic stem/progenitor cells presented higher clonogenic activity or long-term repopulating activity by colony assays or transplantation assays, respectively. A ligand for Robo4, Slit2, is specifically expressed in bone marrow stromal cells, and its expression was induced in osteoblasts in response to myelosuppressive stress. Interestingly, overexpression of Robo4 or Slit2 in HSCs resulted in their decreased residence in the c-Kit(+)Sca-1(+)Lineage(-)-side population fraction. These results indicate that Robo4 is expressed in HSCs, and Robo4/Slit2 signaling may play a role in HSC homeostasis in the bone marrow niche.
The systemic inflammatory response syndrome in acute liver failure (2000)

The systemic inflammatory response syndrome (SIRS) in acute liver failure (ALF), in which infection is common, has not been studied. In this study, SIRS components were recorded on admission and during episodes of infection, in 887 ALF patients admitted to a single center during an 11-year period. Overall, 504 (56.8%) patients manifested a SIRS during their illness, with a maximum of 1, 2, and 3 concurrent SIRS components in 166, 238, and 100 patients, respectively. In 353 (39.8%) patients who did not become infected, a SIRS on admission was associated with a more critical illness, subsequent worsening of encephalopathy, and death. Infected patients more often developed a SIRS and one of greater magnitude. The magnitude of the SIRS in 273 patients with bacterial infection correlated with mortality, being 16.7%, 28.4%, 41.2%, and 64.7% in patients with 0, 1, 2, and 3 maximum concurrent SIRS components, respectively. Similar correlations with mortality were seen for SIRS associated with fungal infection, bacteremia, and bacterial chest infection. Fifty-nine percent of patients with severe sepsis died, as did 98% of those with septic shock. A significant association was found between progressive encephalopathy and infection. Infected patients with progressive encephalopathy manifested more SIRS components than other infected patients. For patients with a SIRS, the proportions of infected and noninfected patients manifesting worsening encephalopathy were similar. In ALF, the SIRS, whether or not precipitated by infection, appears to be implicated in the progression of encephalopathy, reducing the chances of transplantation and conferring a poorer prognosis.
Study on Stress Concentrations and Strengths of Notched Cross-ply Laminates (2005)

The stress redistributions for notched cross-ply laminates under tension were analyzed by establishing a layering shear-lag model, from which the stress concentration factors in intact fibers at the root of the notch were obtained. On the basis of these stress redistributions found, the tensile strengths of notched cross-ply laminates were studied by using a statistical fracture theory. The present results have a relatively good agreement with the existing experimental values.
Ex-RBAC: An Extended Role Based Access Control Model for Location-aware Mobile Collaboration System (2007)

Role-based access control has established itself as a generalized approach for handling access control in collaboration systems. In a location-aware mobile collaboration environment, users can be restricted to assign roles only when (s)he satisfy some predefined identity and spatio-temporal constraint. To cope with these requirements, we extend the existing RBAC model and propose an extended role-based access control (Ex- RBAC) model capable of expressing identity and spatio- temporal constraints.
Additivity of Raman Spectra of Dioxane-Benzene Mixtures (1949)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAdditivity of Raman Spectra of Dioxane-Benzene MixturesC. M. Richards and J. R. NielsenCite this: Anal. Chem. 1949, 21, 9, 1035–1037Publication Date (Print):September 1, 1949Publication History Published online1 May 2002Published inissue 1 September 1949https://pubs.acs.org/doi/10.1021/ac60033a005https://doi.org/10.1021/ac60033a005research-articleACS PublicationsRequest reuse permissionsArticle Views65Altmetric-Citations2LEARN 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
3P2-R03 Automatic Generation of Optimum Planar Grasp based on Static Stability(Robot Hand Mechanism and Grasping Strategy (2)) (2014)

It is important for robots to obtain appropriate grasp positions autonomously to make stable grasps. This paper proposes an automatic generation algorithm for the optimum planar grasp based on grasp stability. The two-dimensional object shape is acquired using a camera. The object coordinate frame, surface curvature, normal direction angle are calculated from the image. By using these parameters, its grasp stability is evaluated. The optimum grasp is generated through the sequence of performance indices. By using our proposed method, robots are able to grasp an unknown shaped object autonomously. Effectiveness of our method is demonstrated through numerical examples.
Hydrothermal Synthesis of Nanostructured Vanadium Oxides (2010)

A wide range of vanadium oxides have been obtained via the hydrothermal treatment of aqueous V(V) solutions. They exhibit a large variety of nanostructures ranging from molecular clusters to 1D and 2D layered compounds. Nanotubes are obtained via a self-rolling process while amazing morphologies such as nano-spheres, nano-flowers and even nano-urchins are formed via the self-assembling of nano-particles. This paper provides some correlation between the molecular structure of precursors in the solution and the nanostructure of the solid phases obtained by hydrothermal treatment.
Whole-Cell Environmental Monitoring Devices: Bioluminescent Bioreporter Integrated Circuits (2000)

Bioluminescent bioreporter integrated circuits (BBICs) are novel biosensor devices that utilize light emitting microorganisms as biological sensors for chemical contaminants. The microorganisms are coupled to a full-custom integrated circuit containing photodetector units and low-noise signal processing circuitry for measuring and communicating chemically induced cellular light responses. Two prototype BBICs have been designed and tested using naphthalene and toluene sensitive bioluminescent bioreporters. Measured sensitivities have approached the low parts-per-billion range.
Static electromigration analysis for signal interconnects (2004)

With the increase in current densities, electromigration has become a critical concern in high-performance designs. Typically, electromigration has involved the process of time-domain simulation of drivers and interconnect to obtain average, RMS, and peak current values for each wire segment. However, this approach cannot be applied to large problem sizes where hundreds of thousands of nets must be analyzed, each consisting of many thousands of RC elements. In this paper, we propose a static electromigration analysis approach. We show that under conditions that are typically met by VLSI interconnects, the charge transfer through wire segments of a net can be calculated directly by solving a system of linear equations, thereby eliminating the need for time domain simulation. Also, we prove that under these conditions the charge transfer through a wire segment is independent of the shape of the driver current waveform. From the charge transfer through each wire segment, the average current is obtained directly, as well as approximate RMS and peak currents. We account for the different possible switching scenarios that give rise to unidirectional or bi-directional current by separating the charge transfer from the rising and falling transitions, and also propose approaches for modeling multiple simultaneous switching drivers. The results on a number of industrial circuits demonstrate the accuracy and efficiency of the approach.
Performance of Pressure-Gain Combustors Without Moving Parts (1980)

An outline is presented of the main findings of recent work aimed at establishing the performance potential of pulsed, pressure-gain combustors. Recent advances in methods of performance analysis are described briefly and test results are presented showing that a significant increase of stagnation pressure can be generated. The importance of Reynolds number effects is discussed and the results of tests which quantify these are included. It is shown that the testing of small scale pulsed, pressure-gain combustors generally tends to produce pessimistic results. For example, a stagnation pressure gain of 6% has been achieved at a combustor stagnation temperature ratio of 2.5/1, under laboratory conditions using a small prototype. Predictions indicate that pressure gains of up to twice this value should be attainable with a combustor of four times the diameter of the laboratory prototype. The incorporation of pulsed, pressure-gain combustors in gas turbines as substitutes for conventional combustors is also discussed. Predictions based upon test results show that these devices can have very beneficial effects on the overall performances of gas turbines to which they are fitted.
A Levinson-type algorithm for two-dimensional Wiener filtering using bivariate Szeg&#246; polynomials (1977)

The Levinson algorithm has been widely utilized in the solution of the normal equations which arise in Wiener filtering. The algorithm can be easily derived and implemented using Szegö polynomials. In recent years, Wiener filtering techniques have been extended to two-dimensional processes. We show that the Szegö polynomials have bivariate analogues which can be used to derive and implement a two-dimensional analogue of the Levinson algorithm.
FML: Face Model Learning From Videos (2019)

Monocular image-based 3D reconstruction of faces is a long-standing problem in computer vision. Since image data is a 2D projection of a 3D face, the resulting depth ambiguity makes the problem ill-posed. Most existing methods rely on data-driven priors that are built from limited 3D face scans. In contrast, we propose multi-frame video-based self-supervised training of a deep network that (i) learns a face identity model both in shape and appearance while (ii) jointly learning to reconstruct 3D faces. Our face model is learned using only corpora of in-the-wild video clips collected from the Internet. This virtually endless source of training data enables learning of a highly general 3D face model. In order to achieve this, we propose a novel multi-frame consistency loss that ensures consistent shape and appearance across multiple frames of a subject's face, thus minimizing depth ambiguity. At test time we can use an arbitrary number of frames, so that we can perform both monocular as well as multi-frame reconstruction.
Designing service-independent capabilities for intelligent networks (1988)

A key attribute desired of intelligent networks is the ability to design multiple services from a set of service-independent capabilities. Some aspects of the planning, requirements specification, design. and development processes to produce such capabilities are examined. Important factors and considerations necessary to the successful realization of service independence are described.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
On the Role of Correlation and Abstraction in Cross-Modal Multimedia Retrieval (2013)

The problem of cross-modal retrieval from multimedia repositories is considered. This problem addresses the design of retrieval systems that support queries across content modalities, for example, using an image to search for texts. A mathematical formulation is proposed, equating the design of cross-modal retrieval systems to that of isomorphic feature spaces for different content modalities. Two hypotheses are then investigated regarding the fundamental attributes of these spaces. The first is that low-level cross-modal correlations should be accounted for. The second is that the space should enable semantic abstraction. Three new solutions to the cross-modal retrieval problem are then derived from these hypotheses: correlation matching (CM), an unsupervised method which models cross-modal correlations, semantic matching (SM), a supervised technique that relies on semantic representation, and semantic correlation matching (SCM), which combines both. An extensive evaluation of retrieval performance is conducted to test the validity of the hypotheses. All approaches are shown successful for text retrieval in response to image queries and vice versa. It is concluded that both hypotheses hold, in a complementary form, although evidence in favor of the abstraction hypothesis is stronger than that for correlation.
Enantiocontrol in the Generation and Diastereoselective Reactions of Catalytically Generated Oxonium and Iodonium Ylides. Metal-Stabilized Ylides as Reaction Intermediates (1998)

ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTEnantiocontrol in the Generation and Diastereoselective Reactions of Catalytically Generated Oxonium and Iodonium Ylides. Metal-Stabilized Ylides as Reaction IntermediatesMichael P. Doyle, David C. Forbes, Melissa M. Vasbinder, and Chad S. PetersonView Author Information Department of Chemistry, University of Arizona Tucson, Arizona 85721 Cite this: J. Am. Chem. Soc. 1998, 120, 30, 7653–7654Publication Date (Web):July 17, 1998Publication History Received24 June 1997Published online17 July 1998Published inissue 1 August 1998https://pubs.acs.org/doi/10.1021/ja972095jhttps://doi.org/10.1021/ja972095jrapid-communicationACS PublicationsCopyright © 1998 American Chemical SocietyRequest reuse permissionsArticle Views1490Altmetric-Citations80LEARN 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-AlertscloseSupporting Info (1)»Supporting Information Supporting Information SUBJECTS:Allyl group,Catalysts,Molecular structure,Rearrangement,Stereoselectivity Get e-Alerts
Selection of Different Strains of Plasmodium falciparum for Testing Blood-Stage Vaccines in Aotus Nancymai Monkeys (1994)

Three strains of Plasmodium falciparum, Vietnam Oak Knoll (FVO), Uganda Palo Alto (Hawaii) (FUP-H) and Uganda Palo Alto (Cayenne) (FUP-C), were examined in 154 Aotus nancymai monkeys as suitable models for testing blood-stage vaccines. The Vietnam Oak Knoll strain had the greatest number of animals with maximum parasite counts > 200,000/microliters. Uniformity of the parasitemia curve increased from passage 4 to passage 6 with an accompanying decrease in the number of days required to reach maximum parasitemia or required treatment. The Uganda Palo Alto (Hawaii) strain was highly infectious, but many animals had extended prepatent periods and extended days to maximum parasitemia. The FUP-H strain would require a greater number of animals per test group to detect partial protection because of the greater number of low-density maximum parasite counts in control animals. The Uganda Palo Alto (Cayenne) strain was poorly adapted to intact A. nancymai. However, five of six splenectomized monkeys inoculated during passage 6 with 10(5) parasites had maximum parasite counts > 200,000/microliters. For the testing of vaccines against primary parasitemia in the A. nancymai model system, the FVO at passage 4 level would appear preferable to passage 6 parasites following a challenge with 10(5) parasites. A similar pattern could be obtained using FUP-H if the challenge was 10(6) parasites. To measure immune memory against recrudescence or rechallenge infection, FUP-C at an early passage in splenectomized A. nancymai would appear to be the appropriate model.