gebhart/patrepeval huggingface dataset:
Performance evaluation of an optical multi-carrier network using wavelength converters based on FWM in semiconductor optical amplifiers (1995)

An analysis of the transmission performance of optical multi-carrier network layer employing wavelength converters based on four wave mixing in semiconductor travelling wave amplifiers is presented. The all-optical wavelength conversion proposed here would allow the network to fulfil the requirement of flexibility, maintaining the transparency of the optical layer. Analytical results, obtained by an accurate model of the transmission through the network, are reported for two different photonic switching approaches. One is based on a combination of wavelength choice and space switching, while the other one relates to a switching completely in the wavelength domain. In both the cases the results assess satisfactory transmission performances.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
The structure of serine hydroxymethyltransferase as modeled by homology and validated by site‐directed mutagenesis (1998)

We describe a model for the three-dimensional structure of E. coli serine hydroxymethyltransferase based on its sequence homology with other PLP enzymes of the alpha-family and whose tertiary structures are known. The model suggests that certain amino acid residues at the putative active site of the enzyme can adopt specific roles in the catalytic mechanism. These proposals were supported by analysis of the properties of a number of site-directed mutants. New active site features are also proposed for further experimental testing.
Reassessing the Role of <i>Staphylococcus aureus</i> Clumping Factor and Fibronectin-Binding Protein by Expression in <i>Lactococcus lactis</i> (2001)

Since Staphylococcus aureus expresses multiple pathogenic factors, studying their individual roles in single-gene-knockout mutants is difficult. To circumvent this problem, S. aureus clumping factor A (clfA) and fibronectin-binding protein A (fnbA) genes were constitutively expressed in poorly pathogenic Lactococcus lactis using the recently described pOri23 vector. The recombinant organisms were tested in vitro for their adherence to immobilized fibrinogen and fibronectin and in vivo for their ability to infect rats with catheter-induced aortic vegetations. In vitro, both clfA and fnbA increased the adherence of lactococci to their specific ligands to a similar extent as the S. aureus gene donor. In vivo, the minimum inoculum size producing endocarditis in > or =80% of the rats (80% infective dose [ID80]) with the parent lactococcus was > or =10(7) CFU. In contrast, clfA-expressing and fnbA-expressing lactococci required only 10(5) CFU to infect the majority of the animals (P < 0.00005). This was comparable to the infectivities of classical endocarditis pathogens such as S. aureus and streptococci (ID80 = 10(4) to 10(5) CFU) in this model. The results confirmed the role of clfA in endovascular infection, but with a much higher degree of confidence than with single-gene-inactivated staphylococci. Moreover, they identified fnbA as a critical virulence factor of equivalent importance. This was in contrast to previous studies that produced controversial results regarding this very determinant. Taken together, the present observations suggest that if antiadhesin therapy were to be developed, at least both of the clfA and fnbA products should be blocked for the therapy to be effective.
Applications of laser systems in post solder inspection equipment (2002)

The theory behind an inspection system that can judge a solder fillet as passable or defective and quickly produce hard data for quality control is presented. Particular attention is given to a system of this type using laser technology. Issues treated are the definition of external inspection, inspection apparatus construction, inspection and analysis, quality control management functions, main specifications, and system configurations. The most significant feature of this system is the easily comprehensible, hard-copy form in which the inspection data are presented.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Compute node communication in the fog: survey and research challenges (2019)

Publication in Conference proceedings/Workshop
Experimental Validation of Multi-Mode Tailboom Passive Vibration Control Using Fluidic Flexible Matrix Composite Tubes (2017)

Helicopter tailboom vibrations are easily excited and decay slowly due to the tailboom's low inherent structural damping. The resulting vibration causes poor ride quality for passengers, fatigues structural elements, and increases maintenance requirements for the helicopter. Fluidic Flexible Matrix Composite (F²MC) tubes are an emerging technology which can provide lightweight, compact vibration control when attached to a vibrating structure and coupled with a fluidic circuit. This paper presents experimental results to validate a method for combining a finite element structural model of a laboratory-scale tailboom with a model of the F²MC tubes and fluidic circuit dynamics. Reductions of over 70% in both bending and torsional vibration are demonstrated in a coupled 26.7 Hz lateral bending/torsion tailboom mode, indicating that F²MC vibration control is viable at higher frequencies and for more complex vibration modes than previous research had explored. A second group of experiments is performed to demonstrate the effectiveness of a novel fluidic circuit configuration which targets two tailboom vibration modes, in contrast to the previous F²MC treatment which can target only one mode. On the lab-scale tailboom testbed, vibration reductions of over 60% are demonstrated in two modes simultaneously when targeting both a 12.2 Hz vertical mode and a 26.7 Hz lateral bending/torsion mode. The circuit designed to reduce vibrations in two modes has a nearly identical weight to a comparable single-mode treatment but is much more effective in reducing vibrations at the second mode.
Navy ship power system restoration using multi-agent approach (2006)

This paper presents a multi-agent system framework that performs system restoration for Navy ship. If Navy surface combatants' electric power supply interruption is caused by a fault, it is important to restore the power system as soon as possible to a target network configuration after the fault. The system views the problem as the interaction of simple independent agents. The approach is implemented using visual C++/JAVA and KQML programming languages. Simulation results have demonstrated that this method is able to reach target configurations
Cryo-Balloon Catheter Localization Based on a Support-Vector-Machine Approach (2016)

Cryo-balloon catheters have attracted an increasing amount of interest in the medical community as they can reduce patient risk during left atrial pulmonary vein ablation procedures. As cryo-balloon catheters are not equipped with electrodes, they cannot be localized automatically by electro-anatomical mapping systems. As a consequence, X-ray fluoroscopy has remained an important means for guidance during the procedure. Most recently, image guidance methods for fluoroscopy-based procedures have been proposed, but they provide only limited support for cryo-balloon catheters and require significant user interaction. To improve this situation, we propose a novel method for automatic cryo-balloon catheter detection in fluoroscopic images by detecting the cryo-balloon catheter's built-in X-ray marker. Our approach is based on a blob detection algorithm to find possible X-ray marker candidates. Several of these candidates are then excluded using prior knowledge. For the remaining candidates, several catheter specific features are introduced. They are processed using a machine learning approach to arrive at the final X-ray marker position. Our method was evaluated on 75 biplane fluoroscopy images from 40 patients, from two sites, acquired with a biplane angiography system. The method yielded a success rate of 99.0% in plane A and 90.6% in plane B, respectively. The detection achieved an accuracy of 1.00 mm±0.82 mm in plane A and 1.13 mm±0.24 mm in plane B. The localization in 3-D was associated with an average error of 0.36 mm±0.86 mm.
Fine-Tuning Pretrained Language Models: Weight Initializations, Data Orders, and Early Stopping (2020)

Fine-tuning pretrained contextual word embedding models to supervised downstream tasks has become commonplace in natural language processing. This process, however, is often brittle: even with the same hyperparameter values, distinct random seeds can lead to substantially different results. To better understand this phenomenon, we experiment with four datasets from the GLUE benchmark, fine-tuning BERT hundreds of times on each while varying only the random seeds. We find substantial performance increases compared to previously reported results, and we quantify how the performance of the best-found model varies as a function of the number of fine-tuning trials. Further, we examine two factors influenced by the choice of random seed: weight initialization and training data order. We find that both contribute comparably to the variance of out-of-sample performance, and that some weight initializations perform well across all tasks explored. On small datasets, we observe that many fine-tuning trials diverge part of the way through training, and we offer best practices for practitioners to stop training less promising runs early. We publicly release all of our experimental data, including training and validation scores for 2,100 trials, to encourage further analysis of training dynamics during fine-tuning.
System-Level Autonomy Trust Enablers (SLATE) (2008)

*† ‡ § The presence and use of Unmanned Autonomous Systems (UASs) is increasing. There are more UASs, with greater levels of autonomy, executing missions of increasing complexity and criticality, resulting in an increased need for testing and verification of UAS system behavior. Unfortunately, the complexity of UAS hardware, software, environment, and mission profiles make testing coverage for system-level behavioral properties prohibitively difficult. This paper describes the System-Level Autonomy Trust Enabler (SLATE). SLATE employs constraint-based models to reason about the relationship between component-level behavioral guarantees and system-level properties for highly-autonomous systems interacting with a complex environment. Originally targeted for application to autonomous spacecraft and planetary rovers, SLATE provides unique capabilities for composing component-level guarantees into system-level guarantees, including inference across the
A 950-MHz Rectifier Circuit for Sensor Network Tags With 10-m Distance (2005)

This paper presents a 950-MHz wireless power transmission system and a high-sensitivity rectifier circuit for ubiquitous sensor network tags. The wireless power transmission offers a battery-life-free sensor tag by recharging the output power of a base station into a secondary battery implemented with the tag. For realizing the system, a high-sensitivity rectifier with dynamic gate-drain biasing has been developed in a 0.3-/spl mu/m CMOS process. The measurement results show that the proposed rectifier can recharge a 1.2-V secondary battery over -14-dBm input RF power at a power conversion efficiency of 1.2%. In the proposed wireless system, this sensitivity corresponds to 10-m distance communication at 4-W output power from a base station.
Amine Replacement Reactions of α-Dimethylaminomethyl-β-methoxynaphthalene (1949)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAmine Replacement Reactions of α-Dimethylaminomethyl-β-methoxynaphthaleneH. R. Snyder and James H. BrewsterCite this: J. Am. Chem. Soc. 1949, 71, 3, 1058–1060Publication Date (Print):March 1, 1949Publication History Published online1 May 2002Published inissue 1 March 1949https://pubs.acs.org/doi/10.1021/ja01171a083https://doi.org/10.1021/ja01171a083research-articleACS PublicationsRequest reuse permissionsArticle Views118Altmetric-Citations10LEARN 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
A1 adenosine receptor of rat testis membranes. Purification and partial characterization. (1990)

Purification of an A1 adenosine receptor of rat testes was performed using a newly developed affinity chromatography system (Nakata, H. (1989) Mol. Pharmacol. 35, 780-786). The A1 adenosine receptor was solubilized with digitonin from rat testicular membranes and then purified more than 25,000-fold by sequential use of affinity chromatography on xanthine amine congener-immobilized agarose, hydroxylapatite chromatography, re-affinity chromatography on xanthine amine congener-agarose, and finally gel permeation chromatography on TSK-3000SW. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis of the final preparation showed a single broad band of Mr 41,000 by autoradiography after radioiodination. This Mr 41,000 peptide was also specifically labeled with an A1 adenosine receptor affinity labeling reagent. A high affinity A1 adenosine receptor antagonist, 8-cyclopentyl-1,3-[3H]dipropylxanthine, bound saturably to the purified receptor with a KD of approximately 1.4 nM. The purified receptor also showed essentially the same specificity for adenosine agonists and antagonists as the unpurified receptor preparations, although the affinities of the purified adenosine receptor for agonists were significantly low compared to those of unpurified receptor preparations indicating that the purified A1 adenosine receptor exists as a low agonist-high antagonist affinity state. Deglycosylation of the purified testis adenosine A1 receptors with endoglycosidase F produced an increase in the mobility of the receptor protein to an apparent Mr 30,000 in sodium dodecyl sulfate-polyacrylamide gel electrophoresis, similar to that of deglycosylated A1 adenosine receptors of rat brain membranes. Peptide maps of the purified testis and brain A1 adenosine receptors using trypsin and V8 protease suggest that these receptors show some structural homologies.
Benchmark Your Way to Forecasting Excellence (1992)

Success in forecasting is a journey, not a destination...explains how can be used to improve forecasts...what can be measured can be improved. Benchmarks are those little bronze discs that the U.S. Geological Survey people have scattered across the continent to establish sea level elevations for surveyors and architects. If a business is attempting to improve its competitive performance in the '90's, at some point they'll be urged to use benchmarking to close the gap if they don't match the standards that best-in-class companies are achieving around the world. The purpose of is to learn what levels of performance are possible and then to use this information to formulate goals and strategies to achieve them. In the 1980's several companies such as Kodak, GTE, Motorola, GM, Corning, ATT once in Quarters 1 and 2, once in Quarter 3, and then twice in Quarter 4. Marketing strategy was to offer the trade a Spring line in November, the big Fall line in May, and a series of small promotions such as Valentine's Day, Father's Day, and Back-to-School, to build sales volume in Quarters 1, 2 and 3. The giant retail chains refused to buy accessories early in the year when they ordered software (underwear, pajamas, stockings, etc.) allowing the manufacturers time to buy materials and convert them into suits, coats, shirts, pants, etc. Consequently, the company maintained a large Central Planning Department dedicated to sales forecasting and inventory management. Large warehouses were maintained in Rochester, Chicago, Los Angeles, New York, and St. Louis, with smaller stocks in Atlanta and Dallas. Management liked my production control work and decided I could make a greater contribution in Central Planning, so I was assigned to forecasting the men's jewelry line instead of implementing my new system for Production Control. Sales and inventory data were compiled on IBM punched card EAM equipment (the old wired-board unit record machine) which produced massive weekly reports of activity. The primary product lines were belts, braces and garters, jewelry, wallets, gifts for men, automotive seat belts and a line of boys products. There also were foreign and industrial sales lines and OEM (original equipment manufacturer) arrangements with catalog houses and large accounts such as Sears and Roebuck. Hickok had been one of the first companies to make an investment in computers in the early '50's with the purchase of a Mountain Machine (it was a vacuum tube design that used a Friden calculator with paper punch tape as input), but the storage capacity proved inadequate for handling the array of styles, colors, sizes and initials that had to be forecasted and stocked. …
Intestinal bacterial flora, intestinal pathology, and lipopolysaccharide-induced translocation of intestinal bacteria. (1992)

The primary aim of this study was to clarify the mechanism and significance of lipopolysaccharide (LPS)-induced translocation of intestinal bacteria. Female Swiss Webster mice were purchased from two different animal suppliers. Twenty-four hours following parenteral LPS, mice from both suppliers had noticeable morbidity and mortality. However, intestinal pathology, gram-negative bacterial overgrowth, and increased bacterial translocation was noted in mice purchased from one supplier but not the other. Mice with increased translocation also had overgrowth of cecal gram-negative bacilli, i.e., 10(10) per gram of cecum following parenteral LPS; in contrast, mice without LPS-induced bacterial translocation had 1,000- to 10,000-fold fewer cecal gram-negative bacilli. Additional groups of mice with increased bacterial translocation were also sacrificed two and 6 hr after parenteral LPS; morbidity and intestinal pathology were evident without a corresponding increase in bacterial translocation. Separate groups of these mice were also injected with platelet activating factor, resulting in intestinal pathology similar to that noted with parenteral LPS, but no increase in bacterial translocation. Thus parenteral LPS was consistently associated with morbidity and mortality but not with intestinal pathology, enteric bacterial overgrowth, or increased bacterial translocation.
Fluoropolyether coatings: relationship of electrochemical impedance spectroscopy measurements, barrier properties, and polymer structure (2002)

Ten model coatings, selected and obtained from a family of fluorinated resins synthesized by the reaction of perfluoroether oligomeric diols of different molec- ular weights with polyisocyanurates of hexamethylenediisocyanate (HDI) and isopho- ronediisocyanate (IPDI), were characterized with differential scanning calorimetry, mechanical testing, and electrochemical impedance spectroscopy measurements. The electrochemical and chemico-physical measurements show that the glass-transition temperature of the starting isocyanate trimers greatly influences the properties of the final urethane coatings; the IPDI trimer gives harder coatings with lower water per- meabilities than the corresponding HDI-based materials. Moreover, for each class of materials (from IPDI or HDI), the fluorine content plays a relevant role: the higher the fluorine percentage, the lower the water absorption into the coatings. Furthermore, the chain length of the polyols used for the synthesis of the prepolymers is a variable that exhibits great influence on the coating properties: coatings containing shorter perflu- oropolyether segments show better barrier properties. © 2001 John Wiley & Sons, Inc. J Polym Sci Part B: Polym Phys 40: 52–64, 2002
The Saccharomyces cerevisiae DNA repair gene RAD2 is regulated in meiosis but not during the mitotic cell cycle. (1990)

The expression of the RAD2 gene of Saccharomyces cerevisiae is elevated upon DNA damage. Here, we show that RAD2 transcript levels also rise approximately eightfold during meiosis but remain constant during the mitotic cell cycle. The period of maximal RAD2 mRNA accumulation during meiosis is consistent with a possible role of RAD2 in a late stage of recombination, in mismatch repair of heteroduplexes, or both.
Localized Production of Phytoalexins by Peanut (Arachis hypogaea) Kernels in Response to Invasion by Aspergillus Species (2008)

Peanuts respond to fungal infection by synthesizing phytoalexins, most of which are antibiotic stilbenes. The mechanism and dynamics of phytoalexin formation in the peanut have not been studied. One of the most popular peanut cultivars in the southeastern United States, Georgia Green, was investigated for its ability to produce phytoalexins in response to infection by soil fungal strains. The experimental design allowed for study of phytoalexin production in peanut kernels layer-by-layer. The layers were dissected from different depths of the kernel starting from the infected area down to healthier tissues. Six peanut phytoalexins, trans-resveratrol, trans-arachidin-1, trans-arachidin-2, trans-arachidin-3, trans-3-isopentadienyl-4,3',5'-trihydroxystilbene, and SB-1, were detected in the kernel slices and quantitated. All of the fungal strains triggered phytoalexin production; however, the composition of phytoalexins varied significantly by layer. After incubation for 24 h, tissues remote from the infected area produced almost exclusively trans-resveratrol, whereas closer to the infected area tissues synthesized all six phytoalexins. In all of the experiments, after 48 h of fungal growth, deeper layers produced all tested phytoalexins. There was a significant difference in phytoalexin production elicited by some fungal isolates. No association was observed between phytoalexin production and toxigenic potential of fungal strains that elicited the production in mature peanut kernels.
Power losses in steel pipe delivering very large currents (2002)

This paper presents a finite difference time domain solution for the electromagnetic fields in ferromagnetic conducting steel pipes of the type used to deliver large currents for in situ heating of heavy oil reservoirs and for in situ environmental decontamination. A method is described whereby a single measured hysteresis loop can be used to deduce the family of hysteresis loops that governs the variable magnetic behavior throughout the pipe wall. Hysteresis and eddy current losses are calculated, and it is shown that hysteresis effects greatly alter the eddy current distribution and can more than triple the total power losses in the steel pipe when compared to the power losses that would be present if hysteresis effects are ignored and magnetic permeability is assumed constant.