gebhart/patrepeval huggingface dataset:
A fast frequency estimation method for balanced three-phase systems with harmonic distortion (2009)

The continuous monitoring of voltage characteristics in electric power systems, such as in grid-connected power converters, is required for power quality assessment and control purposes. This paper presents a fast method to estimate the fundamental frequency of the grid voltage in balanced three-phase systems containing harmonic distortion. The proposed solution is based on a fast algebraic method, which is able to calculate the frequency of a pure sinusoidal signal. Due to the presence of harmonic distortion in the grid voltage some processing is previously carried out, involving coordiante transformations and several repetitive filters. Simulation and experimental results prove the validity of the method in balanced three-phase systems containing harmonic distortion. Furthermore, a fast and accurate estimation of the frequency is obtained even in the presence of amplitude and frequency variations. The response time achieved is around half the period of the fundamental voltage component.
Fine pointing control, OAO-3 (1973)

The fine error sensor located within the Princeton Experiment Package (PEP) is designed to aquire a star within its field of view to hold the spacecraft within plus or minus one-tenth of an arc second in pitch, and plus or minus three-arc seconds about the yaw axis. Pointing accuracy and stability tests of the fine error sensor exceeded the plus or minus 0.1 arc second requirement.
Automated Setup of Display Protocols (2015)

Radiologists' workload has been steadily increasing for decades. As digital technology matures it improves the workflow for radiology departments and decreases the time necessary to examine patients. Computer systems are widely used in health care and are for example used to view radiology images. To simplify this, display protocols based on examination data are used to automatically create a layout and hang images for the user. To cover a wide variety of examinations hundreds of protocols must be created, which is a time-consuming task and the system can still fail to hang series if strict requirements on the protocols are not met. To remove the need for this manual step we propose to use machine learning based on past manually corrected presentations. The classifiers are trained on the metadata in the examination and how the radiologist preferred to hang the series. The chosen approach was to create classifiers for different layout rules and then use these predictions in an algorithm for assigning series types to individual image slots according to categories based on metadata, similar to how display protocol works. The resulting presentations shows that the system is able to learn, but must increase its prediction accuracy if it is to be used commercially. Analyses of the different parts show that increased accuracy in early steps should improve overall success.
Phase Equilibria in the Potassium Hydroxide-Sodium Hydroxide System. (1964)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhase Equilibria in the Potassium Hydroxide-Sodium Hydroxide System.H. W. Otto and R. P. SewardCite this: J. Chem. Eng. Data 1964, 9, 4, 507–508Publication Date (Print):October 1, 1964Publication History Published online1 May 2002Published inissue 1 October 1964https://pubs.acs.org/doi/10.1021/je60023a009https://doi.org/10.1021/je60023a009research-articleACS PublicationsRequest reuse permissionsArticle Views784Altmetric-Citations25LEARN 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
Performance Meter: Proposal of a measurement unit for physical evaluation and table of points (2002)

We have analyzed tables of points adopted by the Internacional Amateur Athletic Federation (IAAF), used to store and classify the specialists in combined competitions (Decatlon, Heptathlon) and another table from the Preparatory School of Cadets (Epcar), Air Ministry, who has a secondary objective to select new concursed students desiring to become part of the Academy. We have verifi ed different obscures and heterogeneous forms that need to be dominated, to introduce a concrete valuation, reasonable and fair with the athletes, in concern tothe lecture used to represent the performance in a more precise way. The tables punctuations compared with the gaugin effectuated by the Performance Meter make us Believe that several, tables and test of valuations used not only in Brazil, but in other countries, are running into the same mistake, maybe because of the absence of a more apurate investigation in your conjectures, than by cumplicity and conveniente to accept the information given by the competition participants.. Keewords: unit of measurement, method of evaluation and physical scale of points Lima, P.A.M. Performance Meter: Proposal of a measurement unit for physical evaluation and table of points. Fitness & Performance Journal, v.1, n.1, p.45-55, 2002.
ChemInform Abstract: Synthesis and Antimicrobial and Antifungal Activities of Some New 2‐(N‐(2′‐Mercapto‐1′,3′,4′‐thiadiazol‐5′‐yl)amino)‐4‐arylthiazole Derivatives. (1987)

Abstract Title compounds of type (V) and (VII) are synthesized as shown in the scheme.
Online State-of-Health Estimation of VRLA Batteries Using State of Charge (2012)

This paper presents an online method for the estimation of the state of health (SOH) of valve-regulated lead acid (VRLA) batteries. The proposed method is based on the state of charge (SOC) of the battery. The SOC is estimated using the extended Kalman filter and a neural-network model of the battery. Then, the SOH is estimated online based on the relationship between the SOC and the battery open-circuit voltage using fuzzy logic and the recursive least squares method. To obtain the open-circuit voltage while the battery is operating, the reflective charging process is employed. Experimental results show good estimation of the SOH of VRLA batteries.
Time-Series Classification with COTE: The Collective of Transformation-Based Ensembles (2015)

Recently, two ideas have been explored that lead to more accurate algorithms for time-series classification (TSC). First, it has been shown that the simplest way to gain improvement on TSC problems is to transform into an alternative data space where discriminatory features are more easily detected. Second, it was demonstrated that with a single data representation, improved accuracy can be achieved through simple ensemble schemes. We combine these two principles to test the hypothesis that forming a collective of ensembles of classifiers on different data transformations improves the accuracy of time-series classification. The collective contains classifiers constructed in the time, frequency, change, and shapelet transformation domains. For the time domain, we use a set of elastic distance measures. For the other domains, we use a range of standard classifiers. Through extensive experimentation on 72 datasets, including all of the 46 UCR datasets, we demonstrate that the simple collective formed by including all classifiers in one ensemble is significantly more accurate than any of its components and any other previously published TSC algorithm. We investigate alternative hierarchical collective structures and demonstrate the utility of the approach on a new problem involving classifying Caenorhabditis elegans mutant types.
CONSUMPTION OF CHERRIES AS A STRATEGY TO ATTENUATE EXERCISE-INDUCED MUSCLE DAMAGE AND INFLAMMATION IN HUMANS. (2015)

daily consumption of tart cherries may attenuate inflammatory and oxidative responses to EIMD, leading to faster recovery after exercise bouts.
Control of early ovarian follicular development. (1999)

Early follicular growth refers to the development of an ovarian follicle from the primordial to early antral phase. In sheep and cows these phases of growth can be classified by the configuration of granulosal cells in the largest cross-section of the follicle as types 1 (primordial), 1a (transitory) 2 (primary), 3 and 4 (preantral) and 5 (early antral). Follicles classified as type 1 may be highly variable within each species with respect to number of granulosal cells and diameter of oocyte. Much of the variation in granulosal cell composition of type 1 follicles may occur at formation and this may account for the variability in granulosal cell composition throughout subsequent stages of growth. There appear to be important differences among species (for example sheep and cattle) in the number and function of granulosal cells relative to the diameter of the oocyte during the initiation of follicular growth. There is evidence that most, if not all, of the growth phases from types 1 to 5 are gonadotrophin-independent and that follicles develop in a hierarchical manner. In sheep, cows and pigs, numerous growth factor, growth factor receptor and gonadotrophin receptor mRNAs and peptides (for example c-kit, stem cell factor, GDF-9, beta B and beta A activin/inhibin subunit, alpha inhibin subunit, follistatin, FGF-2, EGF, EGF-R, TGF beta 1,2 and 3 FSH-R and LH-R) are expressed in a phase of growth (for example types 1-5)-specific and cell-specific manner. However, the roles of many of these factors remain to be determined.
Plant breeding of commercial peppers for disease resistance (1960)

Many forms of peppers varying widely in fruit size, shape, flavor, color and pungency are encompassed in the genus Capsicum. The commercial types grown in California include Bell or sweet peppers and Floral Gem for the fresh market and for processing; pimiento for processing; and pungent chili types for the fresh market, for canning, and dehydration.
Estradiol Abrogates Apoptosis in Breast Cancer Cells through Inactivation of BAD: Ras-dependent Nongenomic Pathways Requiring Signaling through ERK and Akt (2004)

Estrogens such as 17-beta estradiol (E(2)) play a critical role in sporadic breast cancer progression and decrease apoptosis in breast cancer cells. Our studies using estrogen receptor-positive MCF7 cells show that E(2) abrogates apoptosis possibly through phosphorylation/inactivation of the proapoptotic protein BAD, which was rapidly phosphorylated at S112 and S136. Inhibition of BAD protein expression with specific antisense oligonucleotides reduced the effectiveness of tumor necrosis factor-alpha, H(2)O(2), and serum starvation in causing apoptosis. Furthermore, the ability of E(2) to prevent tumor necrosis factor-alpha-induced apoptosis was blocked by overexpression of the BAD S112A/S136A mutant but not the wild-type BAD. BAD S112A/S136A, which lacks phosphorylation sites for p90(RSK1) and Akt, was not phosphorylated in response to E(2) in vitro(.) E(2) treatment rapidly activated phosphatidylinositol 3-kinase (PI-3K)/Akt and p90(RSK1) to an extent similar to insulin-like growth factor-1 treatment. In agreement with p90(RSK1) activation, E(2) also rapidly activated extracellular signal-regulated kinase, and this activity was down-regulated by chemical and biological inhibition of PI-3K suggestive of cross talk between signaling pathways responding to E(2). Dominant negative Ras blocked E(2)-induced BAD phosphorylation and the Raf-activator RasV12T35S induced BAD phosphorylation as well as enhanced E(2)-induced phosphorylation at S112. Chemical inhibition of PI-3K and mitogen-activated protein kinase kinase 1 inhibited E(2)-induced BAD phosphorylation at S112 and S136 and expression of dominant negative Ras-induced apoptosis in proliferating cells. Together, these data demonstrate a new nongenomic mechanism by which E(2) prevents apoptosis.
New method for optical transmission beyond dispersion limit (1992)

A novel transmission scheme is described that allows transmission spans beyond the usual dispersion limit. Experimental results for 10Gbit/s transmission at 1.5 μm via standard fibre are presented. The record distance of 125.8km is bridged with a directly modulated laser.
An Assessment of Ultra High Bypass Engine Architecture and Installation Considerations (2014)

As commercial airliners push for reduction in aircraft noise, emissions, and fuel burn, aircraft and engine manufacturers are accelerating the development of technologies aimed to meet those goals. A reduction in fuel burn, in particular, has led to a trend of very high bypass engines (VHBR), such as the PW1100G and the GEnx. By increasing bypass ratio (BPR) and the fan diameter, higher propulsive efficiencies for turbofans are able to be met, in turn decreasing TSFC. Engines with BPR greater than 25 are now deemed to be achievable through installing variable geometry, removing the nacelle-based thrust reverser, and installing the engine on next generation aircraft configurations. The objective of this work is to develop and investigate different aircraft and engine combination concepts that will provide a reduction in fuel burn. More specifically, a variable pitch geared fan with an aircraft-based thrust reverser, defined as VPF in this study, and a geared fan with a variable area nozzle and a nacelle-based thrust reverser, defined here as VHBR, will be compared on a tube and wing aircraft. To perform this study, each engine model will be implemented within the Environmental Design Space (EDS) in order to receive integrated, relative performance impacts of the two engines. A tradeoff study was then performed with a Boeing 737-800 to obtain the net vehicle fuel burn. EDS was modified to better quantify installation effects in order to meet constraints as fan diameter increases with BPR. Constraints for tire clearance, ground clearance, and roll angle were assessed and the engine location and/or landing gear length were updated accordingly. In order to counteract the new moment caused by the change in engine location, the vertical tail was then resized based on the new engine location. The analysis concluded that the VPF resulted in lower fuel burn than the VHBR when compared with the same engine parameters, and both engines needed to move outboard at lower fan pressure ratios (FPR) to maintain installation constraints.
CERN's 10-year plan marred by Spanish debt problems (1994)

At a cost of SFr 2.23bn (£1.05bn), the proposed Large Hadron Collider (LHC) at CERN will cause the laboratory's budget to exceed planned income from member states over the next 10 years by about SFr 0.5bn. Hoped-for additional contributions from member and non-member states could make up the difference, CERN's council was told last month. But Spain has refused to pay its contribution for the last two years, leaving CERN in debt to the tune of over SFr 150m.
Advanced nonlinear control of three-phasePWM rectifiers (2000)

A nonlinear control of the three-phase PWM rectifier is proposed in which the input q-axis current and output voltage dynamics are modelled in a single-variable nonlinear system, with the d-axis current dynamics excluded. The nonlinear model is linearised by a feedback linearisation technique, not by small-signal analysis, which makes it easier to design the controllers. Furthermore, with the inner capacitor-current control loop, the direct voltage transient response can be faster. The size reduction of the DC electrolytic capacitor due to the fast voltage control of the proposed scheme is studied. The validity of the scheme has been verified through experiment using a TMS320C31 DSP chip.
A secure group communication using non-interactive key computation in multiparty key agreement (2008)

Broadcast encryption deals with broadcasting an encrypted message, so that only a set users termed privileged can decrypt it. These privileged set can be formed by selecting t users among n users within the group. To make sure that the data is available only to privileged users in the group the secret key is used which is known only to members of privileged set at any instant of time. Using secret key sender encrypt the data and sends, receiver in turn decrypts it. This privileged set is known as secure group, communication within the set as secure group communication. Since, the secure group is dynamic in nature, members in the group may change over time, i.e., new members may join the group and existing members may leave the group. As group membership changes key must be changed and redistributed securely to all authorized users. This type of communication provides only confidentiality. Providing authentication in addition to confidentiality is an important issue in secure group communication. A protocol is designed for authentic broadcast encryption. Authentication scheme used is a multiparty authentication scheme which allows all the users in the system to send and receive message simultaneously. Since, all the group members in the system can send and receive message, the sender of the message must be able to indicate his identity and the receiver must be able to verify the authenticity of the message. To verify the authenticity the key is formed by non-interactively with the help of information obtained by Key Distribution Center(KDC).This scheme is secure against colluding malicious parties numbering more than k(threshold).This scheme provides authenticity by using a part of information keys which is used for secret key computation, thus without increasing the storage at the user.
Wisdom and Happiness in Euthydemus 278–282 (2013)

Philosophy
The ATP-binding cassette (ABC) transporter for maltose/maltodextrins of Salmonella typhimurium. Characterization of the ATPase activity associated with the purified MalK subunit. (1993)

The ATPase activity associated with the purified MalK subunit of the maltose transport complex of Salmonella typhimurium, a bacterial ATP-Binding Cassette (ABC) transporter (Walter, C., Höner zu Bentrup, K., and Schneider, E. (1992) J. Biol. Chem. 267, 8863-8869), was characterized in detail. The analysis of the kinetics of ATP hydrolysis yielded a Km value of 70 +/- 4 microM and a Vmax of 1.3 +/- 0.3 mumol/min/mg of protein. Both GTP and CTP also served as substrates. While MalK exhibited nearly the same affinity for GTP as for ATP, the Michaelis constant for CTP as a substrate was much higher. ATP hydrolysis was strongly dependent on the presence of Mg2+ ions. Mn2+ at low concentrations, but neither Ca2+ nor Zn2+ partially substituted for Mg2+. The ATPase activity was optimal at slightly alkaline pH and was stimulated in the presence of both glycerol (7.5%) and dimethyl sulfoxide (Me2SO) (5%). ADP and the non-cleavable substrate analog ATP gamma S (adenosine 5'-O-(3-thiotriphosphate)) were identified as competitive inhibitors. The MalK-ATPase was resistant to specific inhibitors of F-, P-, and V-type ATPases, such as dicyclohexylcarbodiimide, azide, vanadate, or bafilomycin A1. In contrast, micromolar concentrations of the sulfhydryl reagent N-ethylmaleimide strongly inhibited the enzymatic activity. This inhibition was blocked in the presence of ATP. These results suggest that the intrinsic ATPase activity of purified MalK can be clearly distinguished from other ATP-hydrolyzing enzymes, e.g. ion-translocating ATPases.
Web page change and persistence—A four‐year longitudinal study (2001)

Abstract Changes in the topography of the Web can be expressed in at least four ways: (1) more sites on more servers in more places, (2) more pages and objects added to existing sites and pages, (3) changes in traffic, and (4) modifications to existing text, graphic, and other Web objects. This article does not address the first three factors (more sites, more pages, more traffic) in the growth of the Web. It focuses instead on changes to an existing set of Web documents. The article documents changes to an aging set of Web pages, first identified and “collected” in December 1996 and followed weekly thereafter. Results are reported through February 2001. The article addresses two related phenomena: (1) the life cycle of Web objects, and (2) changes to Web objects. These data reaffirm that the half‐life of a Web page is approximately 2years. There is variation among Web pages by top‐level domain and by page type (navigation, content). Web page content appears to stabilize over time; aging pages change less often than once they did.
Microstrip Tapped-Line Filter Design (1979)

The subject of this article is a step-by-step design procedure for microstrip tapped-line filters, accompanied by appropriate design curves. In addition to microstrip tapped-line interdigital filters, a new hairpin-line filter using tapping is introduced. The equation to equation the singly loaded Q for hairpin resonators produced by tapping is derived. Experimental data is presented for filters over 20-percent bandwidth.
Monocyte chemoattractant protein-1 functions as a neuromodulator in dorsal root ganglia neurons (2008)

It has previously been observed that expression of chemokine monocyte chemoattractant protein-1 (MCP-1/CC chemokine ligand 2 (CCL2)) and its receptor CC chemokine receptor 2 (CCR2) is up-regulated by dorsal root ganglion (DRG) neurons in association with rodent models of neuropathic pain. MCP-1 increases the excitability of nociceptive neurons after a peripheral nerve injury, while disruption of MCP-1/CCR2 signaling blocks the development of neuropathic pain, suggesting MCP-1 signaling is responsible for heightened pain sensitivity. To define the mechanisms of MCP-1 signaling in DRG, we studied intracellular processing, release, and receptor-mediated signaling of MCP-1 in DRG neurons. We found that in a focal demyelination model of neuropathic pain both MCP-1 and CCR2 were up-regulated by the same neurons including transient receptor potential vanilloid receptor subtype 1 (TRPV1) expressing nociceptors. MCP-1 expressed by DRG neurons was packaged into large dense-core vesicles whose release could be induced from the soma by depolarization in a Ca2+-dependent manner. Activation of CCR2 by MCP-1 could sensitize nociceptors via transactivation of transient receptor potential channels. Our results suggest that MCP-1 and CCR2, up-regulated by sensory neurons following peripheral nerve injury, might participate in neural signal processing which contributes to sustained excitability of primary afferent neurons.
Development of amorphous Fe-B based alloys for choke and inductor applications (1984)

This paper describes a method of obtaining linear permeability characteristics from Fe-B based amorphous alloys, suitable for choke and inductor applications. The properties are developed by heat treatment at temperatures above those conventionally used to develop the optimum low or high frequency magnetic properties in these alloys. Within a narrow heat treatment temperature range it is possible to develop permeabilities of between 200 and 700, linear up to high flux density levels. D.C. Energy Storage Curves are presented for Fe <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">77.5</inf> B <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">13</inf> Si <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">9.5</inf> alloy, toroidal tape wound cores, heat treated in this manner. These curves indicate the potential advantages of these cores over powder cores and gapped ferrites in D.C. choke applications.