gebhart/patrepeval huggingface dataset:
Riemannian coding for covariance interpolation in massive MIMO frequency division duplex systems (2016)

In the context of multi-user Massive MIMO frequency division duplex (FDD) systems, the acquisition of channel state information cannot benefit from channel reciprocity. However, it is generally expected that covariance information about the downlink channel must be estimated and fed back by the user equipment (UE). As an alternative, it was also proposed to infer the downlink covariance based on the observed uplink covariance and a stored dictionary of uplink/downlink covariance matrices. This inference was performed through an interpolation in the Riemannian space of Hermitian positive definite matrices. We propose to rewrite the interpolation step as a Riemannian coding problematic. In this framework, we estimate the decomposition of the observed uplink matrix in the dictionary of uplink matrices and recover the corresponding downlink matrix assuming that its decomposition in the dictionary of downlink matrices is the same. Moreover, since this space is of large dimension in the Massive MIMO setting, it is expected that these decompositions will be sparse. We then propose new criteria based on this further constraint.
[Passive leg raising predicts volume responsiveness in patients with septic shock]. (2011)

PLR-ΔSV and PLR-ΔPP can predict fluid responsiveness in patients with septic shock. PLR-ΔSV and PLR-ΔPP have a greater ability in predicting volume responsiveness than CVP and SVV.
Response of chronic neuropathic pain syndromes to ketamine: a preliminary study (Pain, 56 (1994) 51–57) (1994)

Backonja, Miroslav∗,a; Arndt, Georgeb; Gombar, Kathy A.c; Check, Billd; Zimmermann, Maryd Author Information
Photochemical and Chemical Two‐Channel Control of Functional Nanogated Hybrid Architectures (2007)

A two-channel switchable nanoscopic hybrid system, able to modulate mass transport by photoresponsive appended organic groups and the presence of G1.5 PAMAM dendrimers as molecular caps, is reported. This new functional gatelike ensemble is chemically (by pH changes) and photochemically (using visible light) controlled in pure aqueous solution, as demonstrated by an experiment involving the controlled release of a dye (see figure).
Aging of dry-type transformer insulation (1949)

THERE IS a fundamental difference in the life of insulation containing organic material operated in an insulating liquid as contrasted to the same insulation operated in a gas medium. When operated in an insulating liquid, the liquid tends to replace the material deteriorated and so maintains electrical strength. When operated at a high temperature in a gas medium, as the deterioration progresses, the gas replacing the varnish has a much lower dielectric strength. The base material may or may not deteriorate depending on whether it is organic or inorganic.
Photocatalytic hydrogen production from solutions of sulfite using platinized cadmium sulfide powder (1983)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotocatalytic hydrogen production from solutions of sulfite using platinized cadmium sulfide powderMichio Matsumura, Yukinari Saho, and Hiroshi TsubomuraCite this: J. Phys. Chem. 1983, 87, 20, 3807–3808Publication Date (Print):September 1, 1983Publication History Published online1 May 2002Published inissue 1 September 1983https://doi.org/10.1021/j100243a005RIGHTS & PERMISSIONSArticle Views1053Altmetric-Citations172LEARN 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 InReddit PDF (271 KB) Get e-Alerts
Detection of <i>Chlamydia trachomatis</i> and <i>Neisseria gonorrhoeae</i> by Strand Displacement Amplification and Relevance of the Amplification Control for Use with Vaginal Swab Specimens (2003)

Vaginal swab specimens may be preferable to cervical swab or urine specimens for the detection of Chlamydia trachomatis and Neisseria gonorrhoeae because of the ease of specimen collection and transport. The purpose of this study was to evaluate whether vaginal swab specimens are equivalent to cervical swab specimens for the detection of N. gonorrhoeae and C. trachomatis by the Becton Dickinson strand displacement amplification assay (SDA) with the BDProbeTec ET instrument and then to evaluate the use of the amplification control in a clinical research setting. In the first phase, vaginal and cervical swab specimens were obtained from 455 symptomatic women aged 18 to 40 attending primary health care and sexually transmitted disease clinics. Thirty-nine specimens (8.6%) had true-positive results for N. gonorrhoeae and 37 specimens (8.1%) had true-positive results for C. trachomatis. The sensitivity of SDA was superior to that of culture for the detection of N. gonorrhoeae with vaginal swab specimens and equivalent to that of the Roche PCR for the detection of C. trachomatis with cervical swab specimens. In the second phase of the study, 1,411 consecutively collected vaginal swab specimens were evaluated, with 357 (25.3%) specimens giving indeterminate readings on the basis of the result for the amplification control. The prevalences of sexually transmitted pathogens in vaginal swab specimens with and without use of the amplification control were 6.0 and 5.8%, respectively, for C. trachomatis and 3.1 and 3.0%, respectively, for N. gonorrhoeae. Although, vaginal swab specimens were equivalent to cervical swab specimens for the detection of N. gonorrhoeae and C. trachomatis by SDA with respect to sensitivity, one in four vaginal swab specimens yielded an indeterminate result when the amplification control was used. The amplification control has limited value for use with vaginal swab specimens.
Arterial switch operation: a new technique of coronary transfer (1994)

A successful outcome after arterial switch operation (ASO) for transposition of the great arteries (TGA) depends in large part on the adequacy of transfer of the coronary arteries to the neoaorta. The present paper describes a new technique of coronary transfer which was used in 43 patients: 28 neonates with TGA and intact septum (with coarctation in one), 10 neonates with TGA and ventricular septal defect (with coarctation in one), 2 children undergoing ASO after failed Senning operation and 3 patients with complex TGA. A standardized uniform technique of coronary transfer was used; this technique involved reimplantation of the two coronary ostia side by side after excision of a single button of neoaortic wall. Most coronary patterns were encountered: the usual pattern in 30, circumflex from right coronary artery in 7, inverted coronary arteries in 3, inverted circumflex and right coronary arteries in 3. There was no early coronary-related mortality or morbidity. One late death (3 months) was probably coronary-related. The overall coronary risk was 2.3% (70% confidence limits = 0.3%-7.5%). The proposed technique of coronary transfer can be used in most patients with TGA (all patients without coronary arteries running between the great arteries) and entails a low coronary risk.
Arguing security: validating security requirements using structured argumentation (2005)

This paper proposes using both formal and structured informal arguments to show that an eventual realized system can satisfy its security requirements. These arguments, called &apos;satisfaction arguments&apos;, consist of two parts: a formal argument based upon claims about domain properties, and a set of informal arguments that justify the claims. Building on our earlier work on trust assumptions and security requirements, we show how using satisfaction arguments assists in clarifying how a system satisfies its security requirements, in the process identifying those properties of domains that are critical to the requirements. 1.
Pleckstrin Homology Domain-mediated Activation of the Rho-specific Guanine Nucleotide Exchange Factor Dbs by Rac1 (2004)

Dbs is a Rho-specific guanine nucleotide exchange factor that was identified in a screen for proteins whose expression causes deregulated growth in NIH 3T3 mouse fibroblasts. Although Rac1 has not been shown to be a substrate for Dbs in either in vitro or in vivo assays, the Rat ortholog of Dbs (Ost) has been shown to bind specifically to GTP.Rac1 in vitro. The dependence of the Rac1/Dbs interaction on GTP suggests that Dbs may in fact be an effector for Rac1. Here we show that the interaction between activated Rac1 and Dbs can be recapitulated in mammalian cells and that the Rac1 docking site resides within the pleckstrin homology domain of Dbs. This interaction is specific for Rac1 and is not observed between Rac1 and several other members of the Rho-specific guanine nucleotide exchange factor family. Co-expression of Dbs with activated Rac1 causes enhanced focus forming activity and elevated levels of GTP.RhoA in NIH 3T3 cells, indicating that Dbs is activated by the interaction. Consistent with this, activated Rac1 co-localizes with Dbs in NIH 3T3 cells, and natively expressed Rac1 relocalizes in response to Dbs expression. To summarize, we have characterized a surprisingly direct pleckstrin homology domain-mediated mechanism through which Rho GTPases can become functionally linked.
Techniques for improving the efficiency of sequential circuit test generation (2003)

New techniques are presented in this paper to improve the efficiency of a test generation procedure for synchronous sequential circuits. These techniques aid the test generation procedure by reducing the search space, carrying out non-chronological backtracking, and reusing the test generation effort. They have been integrated into an existing sequential test generation system MIX to constitute a new system, named MIX-PLUS. The experimental results for the ISCAS-89 and ADDENDUM-93 benchmark circuits demonstrate the effectiveness of these techniques in improving the fault coverage and test generation efficiency.
The induction and competitive inhibition of a high affinity microsomal nitrosodimethylamine demethylase by ethanol (1982)

The effects of ethanol on the metabolism of nitrosamines by rat liver microsomes have been studied. Treatment of rats with 10 or 15% ethanol in drinking water for 3 days causes a 4- to 5-fold enhancement in microsomal N-nitrosodimethylamine demethylase (NDMAd) activity and a 40-60% increase in gross P-450 content. The enhancement is mainly due to the induction of a low Km form (Km = 0.07 mM) of NDMAd. The treatment induces protein species with molecular weights between 50000 and 52000, some of which are believed to be P-450 isozymes with high affinity to NDMA. In addition to NDMA, treatment with ethanol also enhances the metabolism of N-nitroso-N-methylethylamine, N-nitrosomethylaniline, and N-nitroso-N-methylbenzylamine. When added to the incubation mixture, ethanol and its homologs inhibit the demethylation of these nitrosamines by microsomes. Ethanol is a competitive inhibitor of the low Km NDMAd with a Ki of 0.31 mM and is less effective in inhibiting the metabolism of more lipophilic nitrosamines.
Measurement of microelectric potentials in a bioelectrically-active wound care device in the presence of bacteria (2014)

The opinions or assertions contained herein are the private views of the authors and are not to be construed as official or as reflecting the views of the US Department of the Army, the US Department of Defense, the Department of Veterans Affairs, or the Henry M. Jackson Foundation for Advancement of Military Medicine. The research was supported by the US Air Force medical support agency (AFMSA), office of the Air Force Surgeon General, USA.
Lipid and hardness characteristics of cocoa butters from different geographic regions (1989)

Abstract Twenty‐four commercially pressed cocoa butters and 39 laboratory solvent extracted cocoa butters were evaluated. A rapid method using differential scanning calorimetry (DSC) was used to evaluate the hardness of small quantities of cocoa butter. In the DSC thermogram of a quenched sample, the percentage area under the polymorph II endotherm had a positive correlation (r=0.74) with the mechanical hardness. Soft cocoa butters were characterized by high POO, SOO content (P=palmitic acid, O=oleic acid, S=stearic acid), high iodine value, low percentage, area under the polymorph II endotherm from the DSC scanning, and low SOS. Hard cocoa butters displayed opposite characteristics. In general, South American cocoa butters were the softest and had a 37.03 iodine value, a total of 9.1% POO and SOO, and a 26.4% area under the polymorph II endotherm. Cocoa butters from Asia and Oceania were the hardest and had a 34.74 iodine value, a total of 4.1% POO and SOO, and a 35.65% area under the polymorph II endotherm. North and Central American and African cocoa butters were intermediate in hardness characteristics.
Effects of SnO<sub>2</sub> on DC-Bias-Superposition Characteristic of the Low-Temperature-Fired NiCuZn Ferrites (2014)

The microstructure and magnetic properties, especially the dc-bias-superposition characteristic of the SnO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> -doped and low-temperature-fired NiCuZn ferrites, were investigated. X-ray diffraction patterns displayed a single-phase spinel structure for all samples. In addition, with the increase of SnO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> content, the average grain size, sintered density, and saturation magnetic flux density (B <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">s</sub> ) gradually decreased. Initial permeability and Q-factor value first increased slightly, and then decreased continuously with further increasing SnO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> content. Under relatively low superposition magnetic field (H <; 140 A/m), a higher initial permeability favored to obtain a higher incremental permeability. However, when the superposition magnetic field continued to increase, some samples with a lower initial permeability displayed a higher incremental permeability. The incremental permeability was mainly determined by B <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">s</sub> , especially coercivity (H <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">c</sub> ) of the samples. The sample with 0.75 wt% SnO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> favored to obtain a better DC-bias-superposition characteristic on incremental permeability and H <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">70%</sub> (the value of the superposition magnetic field when the incremental permeability reduced to 70% of the initial value). Possible mechanisms contributing to the above results were discussed in detail.
Studies on pyrazines. <b>24</b>. A simple and versatile synthetic method for 3‐alkoxy‐ and 3‐aminopyrazinecarbonitriles (1992)

Abstract New and concise synthetic methods of 3‐alkoxy‐ and 3‐aminopyrazinecarbonitriles by nucleophilic displacement of 3‐phenylsulfonylpyrazinecarbonitriles are reported.
Crowd cloud routing protocol based on opportunistic computing for wireless sensor networks (2016)

We proposed a crowd cloud routing protocol based on opportunistic computing to improve the data transmission efficiency, reliability, and reduce routing overhead in wireless sensor networks. Based on the analysis of the demand of big data processing in wireless sensor network, the data analysis and processing platform for wireless sensor network are designed based on the combination with the cloud computing. The cloud platform includes the main nodes, the nodes, and the core nodes. There are the engine and the drive between the wireless sensor network and the cloud server. Secondly, aiming at the problem of data transmission in the cloud platform, we design an opportunistic computing model which is suitable for wireless sensor networks to minimize the weight of routing management and network overhead. Then, we design an opportunistic calculation model to guarantee the data transmission scheme of the cloud platform. Finally, by eliminating the factors that may cause the link instability, the crowd cloud routing protocol is proposed. The experimental results show that the proposed crowd cloud routing protocol has the functions of real-time and reliability and reduces the cost of routing request.
Hierarchical fuzzy pattern matching for the regional comparison of land use maps (2001)

The evaluation of the spatial similarities and land use change between two raster maps is traditionally based on pixel-by-pixel comparison techniques. However, a pixel-by-pixel comparison can register a small displacement in pixels as land use disagreement even though the land use patterns may be essentially the same. The techniques of unique polygons mapping and hierarchical fuzzy pattern matching, where the maps are compared on both a local and global level, are combined to provide a more robust alternative approach. Local matchings determine the degree of containment of each unique polygon in the template map in terms of fuzzy areal intersections. Formally, the local agreement values are based on polygon property containments and are calculated from a fuzzy logical Max-Min compositional algorithm. A global agreement value is derived by the fuzzy summation of the local matchings. The uses of these basic methods are discussed and further refinements and modelling possibilities are outlined.
Software reliability demonstration testing with consideration of damage size of software failures (1999)

This article describes an extension of the conventional reliability demonstration testing method that is based only on the number of software failures. A reliability demonstration testing method that also considers the size of the damage by the failure is proposed. Both the software used continuously in time (continuous model) and the software used discretely in time (discrete model) are considered. For each model of reliability demonstration testing, the producer's risk and the consumer's risk are formulated. A method is shown by which the testing can be designed when those risks are specified. Solution procedures are shown for the case where the damage size follows an exponential distribution and for the case where it follows a Poisson distribution. The characteristics of the proposed method are discussed using numerical examples. © 1999 Scripta Technica, Electron Comm Jpn Pt 3, 82(5): 10–21, 1999
Primer reporte de Tomato brown rugose fruit virus (ToBRFV) en Michoacán, México (2018)

A nivel mundial, la producción de jitomate y chile es de gran relevancia. Recientemente, en Israel y Jordania se notificó la presencia de un nuevo miembro del género Tobamovirus en plantaciones de jitomate, al cual se le llamó Tomato brown rugose fruit virus (ToBRFV). Los frutos de plantas infectadas manifiestan áreas amarillas, necróticas o de color marrón incluso rugosidades. En los municipios de Yurécuaro y Tanhuato, Michoacán, se han observado cultivos de jitomate y chile con síntomas similares a los antes mencionados por lo que, el objetivo del presente trabajo fue determinar si el ToBRFV se encuentra presente en estas localidades. Se colectó tejido foliar de jitomate con síntomas y se realizó RT-PCR con iniciadores que amplifican un segmento del ORF2 del genoma de este virus; además, se prepararon rejillas para su observación al microscopio electrónico de transmisión (MET). Se obtuvo el amplicón esperado y las secuencias tuvieron una similitud de 99 a 100 % con ToBRFV. Al MET se observaron partículas virales en forma de varilla rígida típicas de tobamovirus. Hasta donde sabemos este es el primer reporte de la presencia del ToBRFV asociado a plantas de jitomate y chile cultivados en México.
Optimizing imaging parameters for MR evaluation of the spine with titanium pedicle screws. (1996)

Although voxel volume has been recognized as a factor that affects artifact size, the role of other contributing factors--slice thickness, number of phase-encoding steps, and FOV/Nx--has not been evaluated before. Artifact reduction proved to be dependent only on FOV/Nx. Artifact size was reduced by the use of fast spin-echo sequences. With conventional spin-echo sequences, TE should be minimized, although other technical factors may outweigh the gain in artifact reduction.
Protozoan Parasite Growth Inhibitors Discovered by Cross-Screening Yield Potent Scaffolds for Lead Discovery (2015)

Tropical protozoal infections are a significant cause of morbidity and mortality worldwide; four in particular (human African trypanosomiasis (HAT), Chagas disease, cutaneous leishmaniasis, and malaria) have an estimated combined burden of over 87 million disability-adjusted life years. New drugs are needed for each of these diseases. Building on the previous identification of NEU-617 (1) as a potent and nontoxic inhibitor of proliferation for the HAT pathogen (Trypanosoma brucei), we have now tested this class of analogs against other protozoal species: T. cruzi (Chagas disease), Leishmania major (cutaneous leishmaniasis), and Plasmodium falciparum (malaria). Based on hits identified in this screening campaign, we describe the preparation of several replacements for the quinazoline scaffold and report these inhibitors' biological activities against these parasites. In doing this, we have identified several potent proliferation inhibitors for each pathogen, such as 4-((3-chloro-4-((3-fluorobenzyl)oxy)phenyl)amino)-6-(4-((4-methyl-1,4-diazepan-1-yl)sulfonyl)phenyl)quinoline-3-carbonitrile (NEU-924, 83) for T. cruzi and N-(3-chloro-4-((3-fluorobenzyl)oxy)phenyl)-7-(4-((4-methyl-1,4-diazepan-1-yl)sulfonyl)phenyl)cinnolin-4-amine (NEU-1017, 68) for L. major and P. falciparum.
Spectral density of random time-hopping spread-spectrum UWB signals with uniform timing jitter (2003)

We derive the power spectral density of time-hopping (TB) spread-spectrum signals in the presence of random timing jitter, which is characterized typically by a discrete-time stationary process (independent of the TH sequences). Detailed descriptions of different TH schemes, employing a random TH sequence, is given and spectral analysis of such TH signals in the presence of uniform timing jitter is carried out using a systematic and tractable technique.