gebhart/patrepeval huggingface dataset:
Distributed MPC-Based Secondary Voltage Control Scheme for Autonomous Droop-Controlled Microgrids (2016)

In this study, we propose a novel distributed secondary control scheme for both voltage and frequency in autonomous microgrids. By incorporating predictive mechanisms into distributed generations, the secondary voltage control is converted to a tracker consensus problem of distributed model predictive control, with the synchronous convergence procedure for voltage magnitudes to the reference value drastically accelerated at a low communication cost. A sufficient local stability condition with the parameter analysis is established. Thus, a distributed proportional integral method combined with a finite-time observer to estimate the global reference information is presented in the frequency restoration while maintaining accurate active power sharing. Our approach accommodates model uncertainty, plug-and-play capability, and especially robustness against information update intervals, which is essential when the conventional method probably yields toward a poor performance. Meanwhile, the distributed architecture implemented on the local and neighboring information allows for a sparse communication network and eliminates the requirement for a centralized controller. Simulation results are provided to verify the effectiveness of the proposed control methodology.
The sucest-fun project: identifying genes that regulate sucrose content in sugarcane plants. (2007)

MODERN sugarcane cultivars are complex hybrids resulting from crosses among several species of the Saccharum genus. Traditional breeding methods have been extensively employed in different countries over past decades to develop varieties with increased sucrose yield, and resistance to pests and diseases. Conventional variety improvement, however, may be limited by the narrow pool of suitable genes. In this sense, molecular genetics is seen as a promising tool to assist in the process of developing improved varieties. The SUCEST-FUN Project (http://sucest-fun.org) aims to associate function to sugarcane genes using a variety of tools, in particular through the study of the sugarcane transcriptome. We identified 238 genes associated with sucrose content in sugarcane plants. The genes were found to be differentially expressed when high sucrose and low sucrose plants or populations were compared and when high and low sucrose internodes were compared. Gene expression data were obtained using cDNA microarray and quantitative PCR technologies. The genes identified can potentially be useful in the identification, characterisation and development of plants with increased sucrose content.
HF multipath passive single site radio location (1994)

This paper considers the problem of passive geolocation for the case of HF multipath propagation. A new technique is developed for the estimation of interpath time delay applying the multiple signal classification (MUSIC) superresolution spectral estimation method. The technique samples the signals received by two spatially separated antennas to compute the normalized MUSIC cepstrum. The method is applied to experimental data in a preliminary proof-of-concept analysis.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Synthesis of a Reaction Intermediate Analogue of Biotin-Dependent Carboxylases via a Selective Derivatization of Biotin (1999)

[formula: see text] An efficient and practical synthesis of 1, a unique reaction intermediate analogue of biotin-dependent carboxylases, is described. The synthesis features a selective acylation of the 1'-N of biotin. Target 1 inhibits the activity of the biotin carboxylase component of acetyl CoA carboxylase. It is the first known biotin-derived inhibitor of biotin carboxylase and should promote new kinetic and structural studies of the biotin-dependent carboxylases.
A programmable neural-fuzzy processor for handwritten digit classification (2000)

A novel current-mode processor based on single layer perceptron and fuzzy logic for handwritten digit classification is put forward in this paper. This processor can be reconfigured as perceptron based classifier or fuzzy logic based classifier, it benefits from the fact that there is a similar architecture between single perceptron and SUM-MAX based fuzzy logic when they are used as a classifier. Both of them share the 11/spl times/10 PE (processing element) array, WTA (winner-take-all) network, switched current integrators and also I/O ports. It can give 11 binary final classifying results, of which one is regarded as rejecting signal, after the feature vector with length variability is fed into the PE array. This processor has been implemented with double metal single poly 1.2 /spl mu/m CMOS technology.
Query Suggestion and Data Fusion in Contextual Disambiguation (2015)

Queries issued to a search engine are often under-specified or ambiguous. The user's search context or background may provide information that disambiguates their information need in order to automatically predict and issue a more effective query. The disambiguation can take place at different stages of the retrieval process. For instance, contextual query suggestions may be computed and recommended to users on the result page when appropriate, an approach that does not require modifying the original query's results. Alternatively, the search engine can attempt to provide efficient access to new relevant documents by injecting these documents directly into search results based on the user's context.
Fabrication of a magnetic composite material from Zn-22Al superplastic powder. (1988)

Air-atomized Zn-22Al superplastic powder and ferromagnetic barium ferrite powder were mixed with various mixing ratio and compacted in a closed-die at room temperature or 250°C. The compacts were magnetized in a strong magnetic field and then converted into a permanent magnet. Magnetic characteristics of the composite material was almost equal to those of conventional plastic magnets. The magnetic composite material, as opposed to the conventional plastic magnets, provides essentially metallic function such as good electric conductivity and re-formability.
On feasibility of interference alignment and cancellation for Gaussian interference multiple access channel (2012)

The feasibility condition for interference alignment (IA) with no channel extension has not been known yet. In this paper, for the first time, we explore the feasibility of interference alignment and cancellation (IAC) which has been proposed for IA with no channel extension. We investigate IAC for the Gaussian interference multiple access channel (MAC) with K receivers and J users, each with M antennas. We establish and prove the general feasibility conditions of IAC. A graph theoretic approach is central to the results.
Kinetic resolution of 2-substituted esters catalyzed by a lipase ex. Pseudomonas fluorescens (1990)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetic resolution of 2-substituted esters catalyzed by a lipase ex. Pseudomonas fluorescensPanos Kalaritis, Ronald W. Regenye, John J. Partridge, and David L. CoffenCite this: J. Org. Chem. 1990, 55, 3, 812–815Publication Date (Print):February 1, 1990Publication History Published online1 May 2002Published inissue 1 February 1990https://pubs.acs.org/doi/10.1021/jo00290a007https://doi.org/10.1021/jo00290a007research-articleACS PublicationsRequest reuse permissionsArticle Views605Altmetric-Citations91LEARN 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
Increased serum angiotensin converting enzyme activity in sarcoidosis. (1977)

The activity of serum angiotensin converting enzyme (ACE), assayed fluorometrically with the substrate hippuryl-L-histidyl-L-leucine was significantly higher in 116 patients with sarcoidosis than in 415 patients with other diseases--pulmonary and nonpulmonary--and in 58 normal subjects. Serum ACE was elevated in 59% of 46 recently diagnosed, untreated patients with sarcoidosis and was significantly reduced following steroid therapy in three patients with sarcoidosis, but in only one of four patients treated with placebos. The results suggest that elevated serum ACE activity is a valuable, although not absolutely specific, diagnostic indicator of sarcoidosis. It should be stressed that a normal value does not rule out the disease, and that steroid therapy tends to reduce the serum ACE activity.
Improved ultrasound transducer positioning by fetal heart location estimation during Doppler based heart rate measurements (2017)

The results show that the developed algorithm can be used to provide accurate feedback on fetal heart location for improved positioning of the US transducer, which may lead to improved measurements of the fHR.
PRODUCTION OF A FACTOR, OR FACTORS, SUPPRESSING IL-2 PRODUCTION AND T CELL PROLIFERATION BY SERTOLI CELL-ENRICHED PREPARATIONS (1991)

Isolated islet allografts survive indefinitely in the abdominal testis of nonimmunosuppressed diabetic rats. The predominant feature of these testes is that the presence of Sertoli cells, but not Leydig cells, is required for extended survival of the islet allografts. Sertoli cells cultures were therefore established in vitro and we examined the effects of the conditioned media on Con A--stimulated spleen lymphocyte proliferation. These studies revealed that a product(s) secreted by Sertoli cells inhibits Con A-stimulated lymphocyte proliferation in a dose-dependent manner. The synthesis of this product is both temperature-dependent, occurring predominantly at 37 degrees C, and hormone-dependent, requiring the presence of follicle stimulating hormone, in the culture medium. We further examined the mechanism of inhibition of lymphocyte proliferation and showed that Sertoli cell-enriched media inhibit the production of IL-2 in a dose-dependent manner. Furthermore, the finding that the addition of exogenous IL-2 is not able to reverse this inhibition indicates that the Sertoli cell-enriched media inhibit both IL-2 production and IL-2 responsiveness of T lymphocytes.
Temporal characterization of transplacental infection of porcine fetuses with porcine reproductive and respiratory syndrome virus (1994)

Pregnant gilts were exposed to porcine reproductive and respiratory syndrome virus (PRRSV) by IV inoculation at or about gestation day 30 (3 gilts), 50 (3 gilts), 70 (3 gilts), or 90 (5 gilts) to investigate the likelihood of transplacental infection with PRRSV at various stages of gestation. At or about 3, 6, and 9 weeks after exposure, gilts were either euthanatized while still pregnant or allowed to farrow. Gilts and pigs were observed for clinical signs of infection, and gilts, pigs, and fetuses were tested for PRRSV and homologous antibody. All gilts were healthy throughout the study, except that farrowing was sometimes difficult and prolonged, and 2 gilts failed to farrow the entire litter. One gilt farrowed on day 111 of gestation; all others farrowed on day 114 or later. Porcine reproductive and respiratory virus was isolated from significantly (chi 2 test, P < 0.01) more fetuses and live and stillborn pigs of the 5 gilts that were infected at 90 or 92 days of gestation than from the fetuses and live and stillborn pigs of the 9 gilts that were infected at 72 or fewer days of gestation (ie, 33 of 44, 75% vs 3 of 78, 4%). After initial infection, PRRSV was isolated from gilts and their pigs for a maximum of 3 weeks and 8 to 11 weeks, respectively. Findings of this study, with regard to the temporal aspects of transplacental infection, may help explain why natural epizootics of PRRSV-induced maternal reproductive failure are often recognized principally as problems of late-term gestation and neonatal survival.
Adaptive rate control in high data rate wireless networks (2004)

We propose an adaptive data rate control method for mobile terminals in 1xEV-DO high data rate wireless networks. The method dynamically adjusts and maintains a signal-to-interference-plus-noise ratio (SINR) threshold and an "effective" data transmission rate for each discrete data rate option. After channel SINR measurement, the mobile terminal uses the SINR thresholds and effective transmission rates for the selection of the data rate option with highest possible throughput. At the same time, packet error rate is maintained at a target value by dynamically adjusting the thresholds according to the pattern of received frame errors. The algorithm allows the mobile terminal to adapt to changing channel conditions and it is very practical since it works based on a closed loop rate control mechanism. Simulations, for a wide range of channel conditions, show that the method maintains a target packet error rate and it results in higher throughput compared to other approaches where a fixed margin is added to AWGN thresholds. We also develop upper bounds on the achievable throughput for high mobile speeds and show that the results of the proposed method is very close to maximum achievable data rate.
Optical parametric generation in CdSiP_2 at 6125 μm pumped by 8 ns long pulses at 1064 nm (2012)

A 21.4 mm long noncritically cut CdSiP2 crystal, pumped by 8 ns pulses at 1064 nm in a double-pass configuration for pump, signal, and idler, generated 523 μJ, 5.8 ns idler pulses at 6.125 μm. The average power of 52.3 mW at the repetition rate of 100 Hz is the highest ever achieved at such wavelengths with direct down conversion from the 1 μm spectral range.
Thermal effect on endurance performance of 3-dimensional RRAM crossbar array (2016)

Three-dimensional (3D) crossbar array architecture is one of the leading candidates for future ultra-high density nonvolatile memory applications. To realize the technological potential, understanding the reliability mechanisms of the 3D RRAM array has become a field of intense research. In this work, the endurance performance of the 3D 1D1R crossbar array under the thermal effect is investigated in terms of numerical simulation. It is revealed that the endurance performance of the 3D 1D1R array would be seriously deteriorated under thermal effects as the feature size scales down to a relatively small value. A possible method to alleviate the thermal effects is provided and verified by numerical simulation.
Seismic isolation systems based on friction-fractional viscoelastic dampers (2008)

This work presents a study of some friction-viscoelastic damping systems for base isolation of structures. The systems are based on a friction-viscoelastic damping device made of a rotational friction damping device extended with a rotational fractional viscoelastic unit. The device is designed to dissipate seismic input energy and wind load and protect buildings from structural and non-structural damage during moderate and severe earthquakes as well as dynamic effects from wind. The damper device has been tested at DTU in Denmark, while intensive experimental tests have been carried out with the friction version of the damper at Takenaka research center in Japan. The comparison of results obtained from the experimental and numerical models show good agreement. Studying the response for static and dynamic loading has identified parameters influencing the response of a structure improved with a given damping system. The quality of the damping system is related to the structural response and an evaluation of the investigated damping systems is made. The damper device is easy to implement in structures. It is an economic device due to material availability. It can easily be replaced if damaged, which is unlikely to happen and it is easily readjusted in site. The frictional damper device has been installed in several buildings in Japan, Greece, India and Denmark.
Esquemas de inmunización complementaria basados en la combinación de una formulación tetravalente de proteínas recombinantes y virus vivos atenuados: estrategia vacunal contra el dengue (2021)

Introducción: El dengue es una de las enfermedades más importantes trasmitida por mosquitos; sin embargo solo existe una vacuna licenciada, la cual está registrada en 20 países. Sin embargo, la vacuna no podrá ser administrada en niños menores de nueve años de edad, dado el elevado riesgo de hospitalización observado en este grupo etario. Por lo tanto, el desarrollo de nuevos candidatos vacunales y estrategias de inmunización continúan siendo una prioridad para la Organización Mundial de la Salud y la comunidad científica. Objetivos: el presente trabajo describe los resultados obtenidos de la combinación en esquemas complementarios de dos tipos de candidatos vacunales: las proteínas recombinantes y los virus vivos atenuados. En un primer acercamiento, el candidato vacunal tetravalente Tetra DIIIC se administró en primates no humanos previamente infectados con virus dengue. En un segundo estudio se evaluó la combinación de Tetra DIIIC y la formulación tetravalente de virus vivos atenuados por vía molecular TV005, desarrollada por el Instituto de Salud de los Estados Unidos y licenciada a la compañía vietnamita Vabiotech. Métodos: Se utilizaron en los estudios primates no humanos sanos de la especie Macaca mulatta. El candidato vacunal tetravalente Tetra DIIIC, consiste en las proteínas recombinantes DIIIC-1-DIIIC4, correspondientes a los cuatro serotipos del virus dengue, adyuvadas en alúmina. La formulación tetravalente de virus vivos atenuados TV005 por Vabiotech incluyó las cepas virales DENV-1 Nauru/74 (WP), DENV-2 Tonga/74, DENV-3 Sleman/78 y DENV-4 Dominica/81. Resultados: Los resultados demuestran que la administración de Tetra DIIIC ocho meses después de la infección pudo activar la respuesta específica de las células B y T contra el DENV. Además, se demostró que los animales inoculados con Tetra DIIIC (una o dos dosis) y luego inmunizados con TV005 desarrollan una respuesta de anticuerpos protectora contra los cuatro serotipos del DENV y que la respuesta inmunológica generada por la Tetra DIIIC reduce la viremia LATV significativamente, lo cual pudiera reducir la reactogenicidad que ha afectado a este último durante los ensayos clínicos. Los resultados aquí descritos resaltan la posibilidad de combinar nuestro candidato vacunal Tetra DIIIC con la vacuna tetravalente del virus vivo atenuado en una estrategia reforzada de inmunización. El presente estudio respalda las estrategias reforzadas como alternativa y enfoques promisorios que solucionan los problemas asociados a cada antígeno individual incluido en la combinación.
Opportunities for electrically-based frequency tuning of piezoelectric vibration energy harvesters (2021)

This paper focuses on electrically-based solutions for tuning the resonant frequency of piezoelectric vibrations energy harvesters in order to compensate for aging or vibration frequency shifts. We present the theory behind electrical frequency tuning, and show that a strong electromechanical coupling associated with two-tuning electrical interfaces allow to reach relatively large frequency tuning ranges. Such solution requires the design of strongly coupled harvesters as well as the design of self-adaptive self-powered electrical interfaces, but, compared to other design approaches, requires much less volume and energy.
Electropolymerization of Poly(phenylene oxide) on Graphene as a Top-Gate Dielectric (2014)

Site-directed electrochemical deposition of pinhole free, low-κ dielectric thin films on graphene is described for the first time. Specifically, we demonstrate the heterogeneous electrochemical polymerization of phenol to form thin (3–4 nm) layers of poly(phenylene oxide) (PPO) on monolayer graphene samples prepared by micromechanical exfoliation and chemical vapor deposition growth. We demonstrate the reliability of depositing PPO films simultaneously on a large number of devices, and selected individual graphene flakes/devices. The performance of top-gated field effect transistor devices described herein demonstrates the utility of electrodeposited PPO films as a top-gate dielectric.
A 20‐channel receive‐only mouse array coil for a 3 T clinical MRI system (2011)

A 20-channel phased-array coil for MRI of mice has been designed, constructed, and validated with bench measurements and high-resolution accelerated imaging. The technical challenges of designing a small, high density array have been overcome using individual small-diameter coil elements arranged on a cylinder in a hexagonal overlapping design with adjacent low impedance preamplifiers to further decouple the array elements. Signal-to-noise ratio (SNR) and noise amplification in accelerated imaging were simulated and quantitatively evaluated in phantoms and in vivo mouse images. Comparison between the 20-channel mouse array and a length-matched quadrature driven small animal birdcage coil showed an SNR increase at the periphery and in the center of the phantom of 3- and 1.3-fold, respectively. Comparison with a shorter but SNR-optimized birdcage coil (aspect ratio 1:1 and only half mouse coverage) showed an SNR gain of twofold at the edge of the phantom and similar SNR in the center. G-factor measurements indicate that the coil is well suited to acquire highly accelerated images.
Production of a chimeric form of CD23 that is oligomeric and blocks IgE binding to the Fc epsilonRI. (1998)

The low affinity receptor for IgE (Fc epsilonRII/CD23) has previously been shown to interact with IgE with a dual affinity. Three chimeric constructs were created containing the lectin domain (amino acids 172-188) or the "neck" and lectin domain (amino acids 157-188) attached to subunits of oligomeric proteins. All chimeras were incapable of interacting with IgE with either a high or low affinity, indicating that the alpha-helical stalk of CD23 is important for orienting the lectin heads such that an interaction with IgE can occur. This concept received further support in that a chimeric CD23 composed of the human CD23 stalk and the mouse CD23 lectin head bound mouse IgE with a dual affinity, but could only bind rat IgE with a low affinity. Effort was next concentrated on a construct consisting of the entire extracellular (EC) region of CD23. A mutation to the first cleavage site of CD23 (C1M) resulted in a more stable molecule as determined by a decrease of soluble CD23 release. A soluble chimeric EC-C1M was prepared by attaching an isoleucine zipper to the amino terminus (lzEC-C1M). The interaction with IgE by lzEC-C1M was found to be superior to that seen with EC-CD23. The lzEC-C1M could inhibit binding of IgE to both CD23 and the high affinity receptor for IgE, Fc epsilonRI, providing further evidence for a strong interaction with IgE. Fc epsilonRI inhibition (approximately 70%) was seen at equimolar concentrations of lzEC-C1M, implying the effectiveness of this chimera and suggesting its potential therapeutic value.