gebhart/patrepeval huggingface dataset:
Average current mode control to improve current distributions in multi-module esonant dc-to-dc converters (2011)

Multi-module interleaved resonant converters have been widely adapted to low-profile power supplies for flat-panel display electronics. In this multi-module approach of resonant converter, individual modules tend to have different circuit characteristics due to unavoidable resonant component mismatch, resulting in noticeable imbalance in the module currents and considerable ripple component in the output current. Many researchers have been studied on methodologies for an effective load current sharing for multi-module dc-to-dc converters. But, most of their results were confined to the treatments of passive components. This paper proposes a new average current mode control which actively controls the individual modules to share equal current at the presence of mismatches in their circuit components. The validity and performance of the proposed average current mode control is demonstrated using a 150 W two-module interleaved LLC series resonant dc-to-dc converter designed for LCD TV sets.
Étude critique de la compétence culturelle à travers l'analyse de manuels de FLE (1999)

DI-fusion, le Dépôt institutionnel numérique de l'ULB, est l'outil de référencementde la production scientifique de l'ULB.L'interface de recherche DI-fusion permet de consulter les publications des chercheurs de l'ULB et les thèses qui y ont été défendues.
Blend membrane of regenerated silk fibroin, poly(vinyl alcohol), and peroxidase and its application to a ferrocene-mediating hydrogen peroxide sensor (1996)

Before or after the blend membrane of regenerated silk fibroin (RSF), poly(vinyl alcohol) (PVA), and peroxidase is treated with ethanol, RSF, PVA, and peroxidase maintain their own structures. The conformational transition of RSF in the blend membrane is accomplished from the silk I structure to the silk II structure by ethanol treatment, which is used to immobilize peroxidase. A ferrocene-mediating sensor for H2O2 is made, which is based on the immobilization of peroxidase in the blend membrane of RSF and PVA. Performance and characteristics of the sensor were evaluated with respect to response time, detection limit, selectivity, and dependencies on temperature and pH as well as on operating and storage stability. © 1996 John Wiley & Sons, Inc.
Flight size auto tuning for broadband wireless networks (2009)

The emergency of broadband wireless access technologies enables seamless Internet access in mobile environments. To fully utilize the broadband wireless bandwidth, it is critical to design a congestion control mechanism that can adjust the congestion window size according to the dynamics of the wireless network condition. A congestion window size that does not react properly to the degradation of channel quality injects excessive data segments into the network. This increases round trip time (RTT) and ultimately may cause packet losses. In the reverse setting, when the channel quality improves drastically, the congestion window should react fast enough to take advantage of the available bandwidth. This paper proposes Flight Size Auto Tuning (FS-AT) as a new TCP variant. FS-AT adjusts the transmission rate according to the estimated available throughput and fluctuations in throughput to mitigate the network congestion while maintaining high network utilization. Moreover, FS-AT provides mechanisms to differentiate between the losses caused by channel errors and those by network congestion. Accordingly, the proposed method avoids unnecessary throughput reduction in case of channel errors, a well-known impediment of standard TCP schemes. FS-AT estimates the current available bandwidth from the received acknowledgments without requiring any modification at the receiver. FS-AT is implemented on Linux and the effectiveness of FS-AT is validated by the measured performance of FS-AT over HSDPA and the simulated performance over a fixed network.
Structured Compressed Sensing: From Theory to Applications (2011)

Compressed sensing (CS) is an emerging field that has attracted considerable research interest over the past few years. Previous review articles in CS limit their scope to standard discrete-to-discrete measurement architectures using matrices of randomized nature and signal models based on standard sparsity. In recent years, CS has worked its way into several new application areas. This, in turn, necessitates a fresh look on many of the basics of CS. The random matrix measurement operator must be replaced by more structured sensing architectures that correspond to the characteristics of feasible acquisition hardware. The standard sparsity prior has to be extended to include a much richer class of signals and to encode broader data models, including continuous-time signals. In our overview, the theme is exploiting signal and measurement structure in compressive sensing. The prime focus is bridging theory and practice; that is, to pinpoint the potential of structured CS strategies to emerge from the math to the hardware. Our summary highlights new directions as well as relations to more traditional CS, with the hope of serving both as a review to practitioners wanting to join this emerging field, and as a reference for researchers that attempts to put some of the existing ideas in perspective of practical applications.
Cefiderocol: a novel siderophore cephalosporin (2018)

There is an urgent need for novel antimicrobial agents to address the emergence of multidrug-resistant pathogens, which are an increasing cause of morbidity and mortality worldwide. Our understanding of multidrug-resistance and bacterial biochemical pathways continues to expand, and the development of cefiderocol specifically targeting siderophore-mediated iron transport shows potential in escaping mechanisms of drug resistance. Cefiderocol, which demonstrates a favorable side effect profile, has the potential to become first-line therapy for our most aggressive and lethal multidrug-resistant Gram-negative pathogens.
Association between Polymorphisms of MSTN and MYF5 Genes and Growth Traits in Three Chinese Cattle Breeds (2007)

The objective of this study was to assess the association of polymorphisms in MSTN and MYF5 genes with growth traits in three Chinese cattle breeds. Only one homozygous animal with BB genotype at MSTN locus was observed in Jiaxian population which was at Hardy-Weinberg disequilibrium (p<0.05). The frequencies of allele A at MSTN locus and allele B at MYF5 locus in the three Chinese breeds were 0.9550/0.9730/0.9720 and 0.8275/0.7581/0.7523, respectively. Allele A at MSTN locus and allele B at MYF5 locus were dominant in these three populations. No statistically significant differences in growth traits were observed between the genotypes of the Jiaxian breed at MSTN and MYF5 loci and the Nanyang breed at MYF5 locus. However, there were statistically significant differences between the genotypes at MSTN locus of the Nanyang breed for WH, HG, HGI and HGBLR (p<0.05), and of the Qinchuan breed for BLI (p<0.05). The SNP in MYF5 had significant effects on WH and HHC of Qinchuan animals (p<0.05). These results suggest that MSTN and MYF5 are strong candidate genes that influence growth traits in cattle. Other SNPs of MSTN and MYF5 or other linked genes should also be studied, which could lead to the development of selection plans to improve the performance of Chinese cattle and also promote the breeding of genuine beef cattle in China.
Fully MMIC-Based Front End for FMCW Automotive Radar at 77GHz (2000)

This paper gives the last UMS developments in the field of automotive radar at 77GHz. A complete front-end based on four MMICs is described, it is dedicated to FMCW radar for Collision Warning/Avoidance systems. A detailed characterization results are given for a single channel front-end. These designs already demonstrate high level of performance on industrial MMIC technologies.
Fast and robust image mosaicking for monocular video (2005)

Image mosaicking is the process of mapping an image series onto a common image grid, where the resulting mosaic forms a comprehensive view of the scene. This paper presents a near-real-time, automatic image mosaicking system that is designed to operate in real-world conditions. These conditions include arbitrary camera motion, disturbances from moving objects and annotations, and luminance variations. In the proposed algorithm, matching filters are used in conjunction with automatic corner detection to find several critical points within each image, which are then used to represent the image efficiently and accurately. Numerical techniques are used to distinguish between those points belonging to the actual scene and those resulting from a disturbance, and to determine the movement of the camera. The affine model is used to describe the frame-to-frame differences that result from camera motion. A local-adaptive fine-tuning step is used to correct the approximation error due to the use of the affine model, and to compensate for any luminance variation. The mosaic is constructed progressively as new images are being added. The proposed algorithm has been extensively tested on real-world, monocular video sequences, and it is shown to be very accurate and robust.
Synthesizing weather forecasts from formated data (1986)

This paper describes a system (RAREAS) which synthesizes marine weather forecasts directly from formatted weather data. Such synthesis appears feasible in certain natural sublanguages with stereotyped text structure. RAREAS draws on several kinds of linguistic and non-linguistic knowledge and mirrors a forecaster's apparent tendency to ascribe less precise temporal adverbs to more remote meterological events. The approach can easily be adapted to synthesize bilingual or multi-lingual texts.
Home ultraviolet B phototherapy: a cost-effective option for severe psoriasis. (2006)

The cost of treating severe psoriasis has risen dramatically, and treatment options vary widely in terms of cost and efficacy. However, little information is available on the relative costs of home phototherapy and other long-term management options, specifically in the context of managed care. A payer-perspective cost model was developed to estimate and compare the direct expenditures associated with a 30-year course of various treatments for severe psoriasis. Within two years of treatment initiation, home-administered ultraviolet B phototherapy was less costly than any of the other treatments examined, including methotrexate, psoralen plus ultraviolet A, the retinoid acitretin, and new biologic agents. In addition, the efficacy and safety profile of home ultraviolet B phototherapy make it an excellent choice for extended management.
Simple 13C-urea breath test with infra-red spectrophotometer. (1996)

When mass spectrophotometric analysis is used for the 13C-urea breath test to assess H. pylori infection, it is costly, complicated, and time-consuming. To overcome these disadvantages, we utilized an infra-red spectrophotometer as a substitute for the mass spectrophotometer. A total of 153 patients (181 tests) analyzed with peptic ulcers or non-ulcer dyspepsia were investigated. Breath samples were collected 15 min after ingestion of 13C-urea (100 mg in 30 ml water). An infra-red spectrophotometer was used to determine the concentration of 13CO2 in the expirate. The 13CO2/12CO2 ratio was also measured by mass spectrophotometry to compare results with those of infra-red spectrophotometric analysis. Direct detection of H. pylori was qualified in biopsy specimens. Of the 181 biopsies, 138 were positive for H. pylori infection and 43 were negative. With the urea breath test, the mean value in the positive group was significantly higher than that in the negative group (0.062 +/- 0.044 vs 0.011 +/- 0.014, respectively). The cut-off level, 0.01, was determined as delta 13C atom %. The sensitivity of infra-red spectrophotometry was 97.8% (135/138) and specificity was 74.4% (32/43). There was an extremely high coefficient of correlation (r = 0.996) between mass and infra-red photometric analysis. Infra-red spectrometry appears to have great potential not only for diagnosing H. pylori infection but also for assessing treatment results. Its advantages include technical simplicity, cost-effectiveness, and high accuracy.
Dominant IL‐10 and TGF‐β mRNA Expression in γδT Cells of Human Early Pregnancy Decidua Suggests Immunoregulatory Potential (2002)

The present findings suggest that gammadeltaT cells in normal pregnancy create a cytokine milieu promoting immunotolerance to the fetus. We hypothesize that through the production of the immunosuppressive cytokines IL-10 and/or TGF-beta the gammadeltaT cells could function directly as regulatory T cells or induce the differentiation of Th0 TCRalphabeta+ cells into regulatory/suppresser cells.
Demonstration of an astrocyte-specific cerebroprotein by an immunofluorescence study of human brain tumors (1970)

✓ Specimens of 16 human brain tumors were studied by the indirect fluorescent-antibody technique to reveal the localization of the particular cerebroprotein found in strikingly increased amounts in human glial tumors as well as in the brain of a patient with Tay-Sachs disease. The cerebro-protein fraction named “10B” by Bogoch was found exclusively in reactive astrocytes, both in astrocytomas and in glioblastomas multiforme. Both the cytoplasm and the cell processes fluoresced upon exposure to antiserum to the “10B” proteins of Tay-Sachs disease. Fluorescence of fibrillary astrocytes located in white matter at some distance from a tumor might be related to discrete edematous changes or constitute an early step in the transition of normal glia to reactive or neoplastic astrocytes. There was no such staining of frankly neoplastic cells or of normal ganglion cells.
High-Performance Concrete, Brick-Masonry and Environmental Aspects (2026)

Fracture Mechanics of Concrete and Concrete Structures, Vol. 3 of the Proceedings of the 6th International Conference on Fracture Mechanics of Concrete and Concrete Structures, Catania, Italy, 17-22 June 2007, 3-Volumes [101029.EG da <http://www.taylorandfrancis.com/books/details/9780415446174/>]
9 × 9 single-mode fiber-optic star couplers (1985)

A 9 x 9 single-mode fiber-optic star coupler that displays an excess loss of 1.46 dB and a uniformity of 1.50 dB is described. Design and fabrication are discussed, and performance data are presented.
Thermal expansion, free volume, and molecular mobility in a carbon black‐filled elastomer (1970)

Abstract The thermal expansion of a butadiene–styrene copolymer filled with carbon blacks differing tenfold in mean particle size (HAF and MT) was investigated. The glass transition was unaffected by MT and was raised only 0.2°C for every 10 parts per hundred by weight of polymer of HAF black added. The coefficient of expansion of the polymer component of the composite in the rubbery region was substantially unaffected by either carbon black, but decreased markedly with increasing black loading in the glassy state. These results suggest that free volume is not altered appreciably by the presence of the filler in the rubbery state, but expands with decreasing temperature below T g . The latter effect is explained by dilatation due to stresses set up around filler particles, arising from differences in the expansion coefficients of filler and polymer, which are not relieved in the glassy state. The near invariability of T g and of the rubbery fected by adsorption of polymer segments on the carbon black surface. A conservative rough estimate indicates that restriction of segmental motion is confined to a 30 Å layer around the particles in which T g is elevated by only 10°C.
In vitro bacteriological study of a new hub model for intravascular catheters and infusion equipment (1989)

We investigated in vitro the antibacterial properties of a simulated new hub model in which the female part has an antiseptic chamber through which the needle (male part) must pass before connection of the set and the catheter. To establish the time needed for disinfection, the magnitude of reduction of the contaminating inocula by the new hub model, and the antibacterial properties of the different components of the hub, we used needles contaminated with solutions containing high inocula (1.9 x 10(7) to 1.2 x 10(11) CFU/ml) of microorganisms involved in hub-related catheter sepsis. Sterilization of the needles was accomplished by allowing them to remain in the antiseptic chamber for 10 s in all assays with Staphylococcus epidermidis, Pseudomonas aeruginosa, Escherichia coli, and Candida albicans. The rubber closures limiting the antiseptic chamber and the dilution effect of the antiseptic itself accounted for a minor part of the inoculum reduction achieved by the new hub model. This simulated hub provides good protection against endoluminal contamination. Further studies seem warranted to prove its industrial viability and clinical efficacy.
Report Status on All Projects (2011)

Many years ago, a good project manager might have gotten away with being a poor communicator. The clients typically didn’t like it, but as long as project managers could deliver the goods, clients were inclined to let them do their own thing.
Atomic absorption spectrometric determination of trace cadmium after preconcentration with ( 1-(2-pyridylazo )-2-naphthol)-naphthalene adsorbent or its complex on microcrystalline naphthalene (2002)

Cadmium 1-(2-pyridylazo)-2-naphtho l complex is quantitatively adsorbed on microcrystalline naphthalene in the pH range 8. 0- 10.5. It can also be alternatively adsorbed on [1-(2-pyridylazo)-2-naphthol]-naphthalene adsorbent packed in a column at a flow rate of 1-2 mL!min and th e metal determined by flame atomic absorption spectrometri call y by measuring th e absorbance at 228.8 nm agai nst a reagent blank. About 0.05 J..l g of cadmium can be concent1ated in a column from 450 mL of aq ueous sample, where it s concentration is as low as 0.11 ng/mL. The detecti o n limit is 44 pg/mL for cadmium at the minimum instrumental settings. The linearity is maintained in the concentrati o n range 0.11 ng/mL to 0.4 !!g/mL cadmium in aqueous sol uti o n o r 0.0 l to 1.6 1-lg/mL cadmium in th e final DMF solution with a correlation factor of 0.9995 . Eight replicate determinations of 0 .3 J..lg/mL of cadmium in final DMF soluti o n give a mean absorbance of 0.150 with a relative standard deviation of 1.6%. The sensitiv it y for I % absorption is 8.8 ng/mL in final DMF sol uti on. The interference of a large number of an io ns a nd cations o n th e determinatio n of cadmium after th e preconcentration step have been studied and the optimized conditi ons developed utili zed for its trace determinati o n in various alloys and biological samples. The method may also be used for th e determinati on of cadmium in various environmental samples. Inductively coupled plasma atomic emission spectro­ metry (ICP-AES) and inductively coupled plasma mass spectrometry (ICP-MS) may be used for the trace determination of metals in complex materials but these in struments are highly expensive and are not free from various types of inherent interfe rences 1 • 2 • Spectrophotometry is a simple and inexpensive tech niq ue, however, it is not selective and sufficie ntly sensitive 3 . Among th e electrochemical techniques, anodic stripp ing voltammetry (ASV) 4 . 6 and differen­ tial pulse anodic stripping voltammetry (DPASV) 7 are fairly sensitive; however, they are relatively time­ consuming and lack selectivity and reproducibility4-7. The possibility of using l-(2-pyridylazo)-2naphthol (PAN) for the analytical purposes, was investigated by Cheng and Bray 8 . This reagent reacts with several metal ion s in the periodic table to form water-insol uble, coloured chelate complex and has been applied widely in the liq uid-liq uid extraction and spectrophotometric determination of metal ions in materi als 9 . Although solvent extracti on is a simple
Magnetic properties of single-crystal {110} iron films grown on GaAs by molecular beam epitaxy (invited) (1982)

Single-crystal {110} Fe films, grown for the first time by molecular beam epitaxy on GaAs, have been studied by a variety of techniques in order to determine the dependence of the magnetic properties upon film thickness L and quality, and an overview of these results is presented. The dependence of the ferromagnetic resonance (FMR) field upon its orientation in the (11̄0) plane was measured at 16.4 GHz and shows that the magnetically easy axis is [110] for L&lt;50 Å and [001] for L≳150 Å. A theory of FMR which incorporates magnetocrystalline surface anisotropy is outlined. It successfully interprets the thickness dependence of the FMR data in the ultrathin (L≲50 Å) regime and shows them to be surface dominated. FMR data at 9.2 GHz, which contain both aligned and nonaligned resonance branches, are presented as a function L. In addition, the dependence of the branches on frequency f for 8 GHz&lt;f&lt;40 GHz along [001] and [110] are discussed.
A visual positioning and measurement system for robotic drilling (2016)

In order to increase drilling efficiency, it is necessary for robotic drilling system to take advantage of offline programming method to drill a large number of holes automatically. Vision measurement is needed to correct work piece position because of inconformity between actual object and mathematical models. This paper introduces a visual positioning and measurement system for robotic drilling. A calibration board is designed to obtain hand-eye relationship and four laser range sensors are used to measure surface normal. This paper also summarizes workflow of offline programming and correction methods for different parts. Experiments give the result of hand-eye relationship and prove the position accuracy of vision measurement.
Transgenic technologies for the study of epididymal function. (2000)

Sperm mature and acquire the capacity for fertilization during their transit through the epididymis, however little is known of the molecular events that comprise sperm maturation. Recent advances in transgenic mouse technology hold promise for illumination of this process. Most of the existing infertile, transgenic mouse lines seem to have defects in epithelial structure or sperm transport rather than direct defects in the maturation of sperm. Temporally and spatially restricted targeted disruptions of epididymal specific genes should provide great insight into the epididymal contribution to sperm maturation.
Design of Bio-Inspired Autonomous Aircraft for Bird Management (2015)

Wild bird management at airports and sporting venues is a significant issue. Numerous methods for managing birds are used. Falconry has proven the most effective solution but it is not without its limitations; predatory birds are temperamental, can be difficult to manage, and are unable to be flown at night. The aim of this research is to develop an autonomous unmanned bird, replicating the physical characteristics, and flight behaviour of the Australian apex avian predator, the Wedge-tailed Eagle (Aquila Audax). This paper presents the design, fabrication, and initial results from wind tunnel testing to characterise the aerodynamic performance of the unmanned aircraft. The unmanned aircraft includes a novel control surface designed to replicate the control functions of birds' tails.
Studies on Development of the Ultra-fine Size Reduction Method of Slightly Soluble Medicinal Crystals. III. The Inference of Origin for Ultra-fine Size Reduction of Oxolinic Acid Crystal (1983)

It was found in the previous papers that oxolinic acid (OA) crystals were reduced to ultra-fine size by the new method of present authors. Therefore, several investigations were carried out to infer the origin for ultra-fine size reduction in this paper. It was inferable from the results that surfactants or polymers which coexisted in the crystal formation-growth process adsorbed on the surface of microparticles, and the size reduction effect had been displayed due to suppressing the aggregation for their dispersing action.