gebhart/patrepeval huggingface dataset:
A manipulator plays Jenga (2008)

This article describes an overview of a prototypical manipulation control system, which is able to play Jenga. The implementation of the Jenga game has been chosen to verify the integration of existing concepts such as force/torque control, distance control, real-time behavior of distributed control systems, sensor data fusion, online trajectory computation, and visual servoing in one exhibit. This exhibit has no direct industrial use, but it clearly shows the potential of multisensor integration and opens new possibilities for industrial manipulation. The scope of these kinds of systems is certainly not limited to industrial manipulation applications, e.g., the potential in the field of medical robotics is also very high and has to be investigated. A key part of this work is the online trajectory generator. Within this work, a second-order generator (rectangular acceleration signals) has been applied (Kroger et al., 2007), but, for the aim of bringing the mentioned concepts into industrial practice, a jerk-limited generator will be necessary. This and further research on sensor fusion methods will be a major focus of our future work. Besides, the Jenga game could be used as an international benchmark for manipulation control concepts (including force/torque control, distance control, and visual servoing). It is well-known and, since the manufacturer (Hasbro, 2007) has only one place of production, the game is exactly the same all over the world.
ChemInform Abstract: Studies on Nitrogen‐Containing Heterocyclic Compounds. Novel Synthesis of Naphtho(1,2‐b and 2,1‐b) (1,8)naphthyridines and Oxidation Reactions with Peroxy Acids. (1997)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Plasmid-mediated chromosomal gene transfer in Neisseria gonorrhoeae (1978)

An indigenous Neisseria gonorrhoeae conjugative plasmid, pLE2450, was tested for its ability to mediate chromosomal gene transfer between gonococcal strains. Plasmid-mediated chromosomal transfer was detected at a low frequency and can be used to establish certain linkage relationships between amino acid and antibiotic resistance markers.
Input ripple current cancellation technique resulting in less differential mode noise current (1999)

Switching current generated from the main switch in a switching converter injects a substantial amount of ripple current at the input side of the converter. The ripple current is undesirable, as it becomes an EMI noise source. Differential mode current traditionally need bulky and costly filtering components to suppress the first several harmonics down to an acceptable level. An alternative way to reduce the ripple, by means of nullification technique, is proposed. Both active and passive nullification approach are discussed in this paper. This technique results in smaller components size and reduced cost.
Plant genomics: Present state and a perspective on future developments (2002)

The year 2001 may well be called the Year of the Human Genome. Less in the limelight, but equally exciting for plant scientists, is the rapid progress in plant genomics. With relatively modest resources, a lot has been achieved. The Arabidopsis genomic sequence (125 megabases [Mb]) is essentially finished, and rice sequencing is progressing rapidly. For many species, expressed sequence tag (EST) resources are plentiful, allowing broad inter-specific comparisons. At the same time, development of integrated physical-genetic maps for large-genome crop species is not progressing as rapidly as desired, while resources for the complete sequencing of these crops are not likely to become available. Some important plant genomes are so large that their complete sequencing may not be practical for many years. Significant plant genome research is concentrated in industry, and not freely available, creating some frustration in the academic community. Growing interest is anticipated in the development of metabolic profiling technologies, RNA profiling, proteomics and integrated systems approaches to plant biology.
Variable bit rate HDTV communication in ATM networks (2002)

Variable bit rate high-definition-television (HDTV) communication in asynchronous-transfer-mode (ATM) networks is discussed. Terminal functions required for support of variable-bit-rate HDTV communication are outlined. Detection of lost and misdelivered cells, handling of cell delay variation, source clock frequency recovery, and segmentation and reassembly of user information are shown to be adaptation layer requisites. Multimedia multiplexing, virtual channel control, and required network quality for multimedia communication are also discussed. Adaptation functions for intrafield adaptive differential pulse-code modulation coding are described, and an experimental HDTV codec and an ATM terminal adapter are presented.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Mapping radiant energy distributions during laser irradiation of collagen phantoms by photolabeling with tetrabrominated rhodamine (1992)

A method is proposed for mapping laser light distributions in gel phantoms by measurement of the distribution of a fluorescent compound that has been photolabeled to the gel by the laser irradiance. A preliminary study of photolabeling by an argon laser using tetrabrominated rhodamine (TBR) was conducted in collagen gel phantoms to illustrate the feasibility of the method. A discussion of the basic quantitative relationships for analysis of measurements is presented.
Recovery blocks and algorithm-based fault tolerance (2002)

Algorithm-based fault-tolerance has been used for a number of years in the field of numerical processing. It has advantages over more 'explicit' fault-tolerant methods in that it operates concurrently with the application, thus reducing the time overhead associated with the added redundancy. Recovery blocks and similar fault-tolerant methods are critically dependent on the detection of errors in the system (as are all fault-tolerant methods). In the recovery block scheme, this error detection is performed by some form of acceptability check on the resultant data. This is usually a non-trivial problem and one of the major issues that prevent recovery block schemes being used more widely. This paper describes how algorithm-based fault-tolerant methods could be used to assist in the error detection process within the recovery block scheme and thus make it more appropriate for use in 'real' applications.
Controlling Curvature in a Family of Oligoamide α‐Helix Mimetics (2008)

Catching up with the curve! The natural curvature found in a majority of α helices has been mimicked in small synthetic oligoamide scaffolds. Differences in hydrogen-bonding patterns in these scaffolds lead to mimetics with varying degrees of curvature in the backbone. This adds another parameter to the structural and functional mimicry of α helices. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
Optimizing Endocrine Therapy for Breast Cancer (2005)

to patients in place of tamoxifen, or as part of a sequential treatment strategy. Further analysis of completed trials, as well as results of ongoing and future studies, will provide critical answers that may translate into further improvements in care for postmenopausal women with receptorpositive disease. More than 2,000 postmenopausal women are diagnosed with receptor-positive disease each week in the United States alone; the impact of any improvements in the care of these patients could have significant public
Actions in the Eye: Dynamic Gaze Datasets and Learnt Saliency Models for Visual Recognition (2014)

Systems based on bag-of-words models from image features collected at maxima of sparse interest point operators have been used successfully for both computer visual object and action recognition tasks. While the sparse, interest-point based approach to recognition is not inconsistent with visual processing in biological systems that operate in `saccade and fixate' regimes, the methodology and emphasis in the human and the computer vision communities remains sharply distinct. Here, we make three contributions aiming to bridge this gap. First, we complement existing state-of-the art large scale dynamic computer vision annotated datasets like Hollywood-2 [1] and UCF Sports [2] with human eye movements collected under the ecological constraints of visual action and scene context recognition tasks. To our knowledge these are the first large human eye tracking datasets to be collected and made publicly available for video, vision.imar.ro/eyetracking (497,107 frames, each viewed by 19 subjects), unique in terms of their (a) large scale and computer vision relevance, (b) dynamic, video stimuli, (c) task control, as well as free-viewing. Second, we introduce novel dynamic consistency and alignment measures, which underline the remarkable stability of patterns of visual search among subjects. Third, we leverage the significant amount of collected data in order to pursue studies and build automatic, end-to-end trainable computer vision systems based on human eye movements. Our studies not only shed light on the differences between computer vision spatio-temporal interest point image sampling strategies and the human fixations, as well as their impact for visual recognition performance, but also demonstrate that human fixations can be accurately predicted, and when used in an end-to-end automatic system, leveraging some of the advanced computer vision practice, can lead to state of the art results.
Visualization of Si Anode Reactions in Coin-Type Cells via Operando Scanning Electron Microscopy (2017)

Understanding the electrochemical behavior and controlling the morphological variations of electrodes are critical for the design of high-capacity batteries. In this article, we describe a newly established operando scanning electron microscopy (SEM) to visualize the battery reactions in a modified coin cell, which allowed the simultaneous collection of electrochemical data and time-resolved images. The investigated silicon (Si)-polyimide-binder electrode exhibited a high capacity (∼1500 mAh g<sup>-1</sup>) and a desirable cyclability. Operando SEM revealed that the morphology of the Si anode drastically changed and cracks formed on the electrode because of the lithiation-induced volume expansion of the Si particles during the first charge process. Interestingly, the thickness variation in the Si composite layer was moderated in subsequent cycles. This strongly suggested that cracking caused by the breakage of the stiff binder alleviated the internal stress experienced by Si. On the basis of this finding by the operando SEM technique, patterned Si electrodes with controlled spacing were successfully fabricated, and their improved performance was confirmed.
A convenient synthesis of functionalized tetraphenylchlorins (1996)

Reaction of metallo-2-nitro-5,10,15,20-tetraphenylporphyrins with ‘active-methylene’ compounds (e.g. malonates, malononitriles) in the presence of base gives access to novel cyclopropachlorins or functionalized trans-chlorins (both characterized by X-ray crystallography) by way of a sequential Michael addition and rare nucleophilic displacement of a secondary nitro group.
Recovery of nickel-cobalt alloy from superalloy scrap (1987)

This paper describes Bureau of Mines investigations of recovery of Ni, Co, Cr, and other metals from mixed contaminated superalloy scrap. The scrap is melt-refined and cast into anodes for electrodeposition of recyclable Ni-Co alloy. Preliminary experiments to recover Cr, W, and other metals from the anode sludge and other byproducts are discussed.
Surface protected and modified iron based core-shell nanoparticles for biological applications (2007)

Excellent quality superparamagnetic iron oxide coated iron nanoparticles were prepared via one pot synthesis with narrow size distribution. These particles were subsequently coated with FexOy, FePt or Pt shell to give long term protection to the highly reactive zero-valent iron core. Clear core-shell morphology was observed in the TEM images of FexOy and FePt coated particles and the magnetic properties suggested that these shells provided good protection to the core from oxidation, in particular iron oxide coated particles retained their magnetism for well over a year. FePt coated particles show superior magnetic properties to FePt particles alone and were found to be promising in biological applications. The magnetic studies further revealed that the saturation moments of the resultant particles were dependent on the type of shell used for encapsulation. Surface modifications of these particles were done with suitable hydrophilic ligands and they showed excellent stability and solubility in water and different buffer solutions which reveals the suitability of these nanoparticles for biomedical research.
Influence of Kinetic and Thermodynamic Factors on the Glass-Forming Ability of Zirconium-Based Bulk Amorphous Alloys (2005)

The time-temperature-transformation curves for three zirconium-based bulk amorphous alloys are measured to identify the primary factors influencing their glass-forming ability. The melt viscosity is found to have the most pronounced influence on the glass-forming ability compared to other thermodynamic factors. Surprisingly, it is found that the better glass former has a lower crystal-melt interfacial tension. This contradictory finding is explained by the icosahedral short-range order of the undercooled liquid, which on one hand reduces the interfacial tension, while on the other hand increases its viscosity.
Synthesis of ant venom alkaloids from chiral .beta.-enamino lactones: (3S,5R,8S)-3-heptyl-5-methylpyrrolizidine (1992)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of ant venom alkaloids from chiral .beta.-enamino lactones: (3S,5R,8S)-3-heptyl-5-methylpyrrolizidineOlivier Provot, Jean Pierre Celerier, Huguette Petit, and Gerard LhommetCite this: J. Org. Chem. 1992, 57, 7, 2163–2166Publication Date (Print):March 1, 1992Publication History Published online1 May 2002Published inissue 1 March 1992https://pubs.acs.org/doi/10.1021/jo00033a047https://doi.org/10.1021/jo00033a047research-articleACS PublicationsRequest reuse permissionsArticle Views552Altmetric-Citations45LEARN 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-AlertscloseSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts
Design and analysis of strictly nonblocking WDM optical-switching networks (2007)

Feature Issue on Photonics in SwitchingTwo novel strictly nonblocking crossbar-like WDM networks are proposed and used to design what we believe to be new classes of Clos-type networks. The proposed Clos-type networks are based on two design methods, namely, the wavelength-interconnected and the fiber-interconnected methods. The proposed designs enforce wavelength conversion strictly between two prespecified and fixed wavelengths, thus eliminating the need for expensive wide-range wavelength converters. Analysis of hardware complexity shows that the proposed designs can achieve up to 30% reduction in overall cost compared with best-known WDM switching networks while using a smaller number of stages.
Progress of InGaN Light Emitting Diodes on SiC (2002)

We present brightness improvements of blue InGaN chips on SiC substrates. Chip shape, performance of the contacts, high structural quality of the InGaN quantum well layers are essential for an optical output as high as 9.5 mW at 470 nm and 20 mA. The external quantum efficiency is 18%. The light extraction out of the chip is increased to 55% as calculated by a ray trace simulation. This is the highest value ever reported on InGaN chips, which are conventionally mounted with epitaxial layers upside. The optimized chip side walls have vertical angles of 60°. The reflectivity at the p-contact is increased to 90% for flat angles of 0 to 20°. An internal quantum efficiency of 32% is estimated from the values of light extraction and external quantum efficiency. The epitaxial layers are improved by optimizing the growth parameters of the quantum wells interfaces. Electrical losses are reduced by better interface quality of epitaxial layers and by an improved p-contact resistance of 10—4 Ω cm2, respectively.
Substrate specificity of formylglycinamidine synthetase (1986)

Formylglycinamidine ribonucleotide (FGAM) synthetase, which catalyzes the conversion of formylglycinamide ribonucleotide (FGAR), glutamine, and ATP to FGAM, ADP, glutamate, and Pi, has been purified to homogeneity (sp act. 0.20 mumol min-1 mg-1) from chicken liver by an alternative procedure to that of Buchanan et al. [Buchanan, J. M., Ohnoki, S., & Hong, B. S. (1978) Methods Enzymol. 51, 193-201] (sp act. 0.12 mumol min-1 mg-1). A variety of new analogues of formylglycinamide ribonucleotide have been prepared in which the formylglycinamide arm (R = CH2NHCHO) has been replaced by R = CH3, CH2OH, CH2Cl, CH2NH3, CH2NHCOCH3, CH2NHCOCH2Cl, CH2NHCO2CH2Ph, and L-CHC-H3NHCHO. These compounds have been characterized by 1H and 13C NMR spectroscopy. With compounds R = CH3, CH2OH, and CH2NHCOCH3 and ATP, in the presence or absence of glutamine, FGAM synthetase catalyzes the production of Pi at 4.5, 48, and 20%, respectively, the rate of production of Pi from formylglycinamide ribonucleotide. Only R = CH2NHCOCH3 causes glutaminase activity as well as ATPase activity and has been shown to be converted to the amidine analogue. Both FGAR (R = CH2NHCHO) and the FGAR analogue (R = CH2NHCHOCH3) in the presence of ATP and FGAM synthetase and in the absence of glutamine form a complex isolable by Sephadex G-50 chromatography. FGAM synthetase is thus highly specific for its formylglycine side chain. [18O]-beta-FGAR was prepared biosynthetically, and FGAM synthetase was shown by 31P NMR spectroscopy to catalyze the transfer of amide 18O to inorganic phosphate.
Recent improvements to<i>RC</i>-line encoded position-sensitive proportional counters (1978)

Continuing research on the principles of position encoding with RC lines has advanced the design of position-sensitive proportional counters (PSPCs) to meet the requirements for high count rates (> 105 counts s−1) and good spatial resolution (> 104 spatial elements) in small-angle scattering experiments with X-rays and neutrons. Development and operation are now reported for (1) low-noise preamplifiers with pole-zero cancellation in the feedback circuit and modular linear amplifiers with passive RCL shaping to reduce output saturation at high count rates and to shorten the position-signal processing time, (2) resistive self-heating and propylene decomposition to increase the conductance and film thickness of pyrolytic carbon anodes and to reduce the effects of electron erosion at high count rates. (3) technology for large-area PSPCs (> 60 × 60 cm) for the measurement of small-angle scattering with neutrons, and (4) a method of electronic thickness discrimination to change the effective thickness of area PSPCs and to increase the signal-to-background ratio.
Evolutionary stability of antibiotic protection in a defensive symbiosis (2018)

The increasing resistance of human pathogens severely limits the efficacy of antibiotics in medicine, yet many animals, including solitary beewolf wasps, successfully engage in defensive alliances with antibiotic-producing bacteria for millions of years. Here, we report on the in situ production of 49 derivatives belonging to three antibiotic compound classes (45 piericidin derivatives, 3 streptochlorin derivatives, and nigericin) by the symbionts of 25 beewolf host species and subspecies, spanning 68 million years of evolution. Despite a high degree of qualitative stability in the antibiotic mixture, we found consistent quantitative differences between species and across geographic localities, presumably reflecting adaptations to combat local pathogen communities. Antimicrobial bioassays with the three main components and in silico predictions based on the structure and specificity in polyketide synthase domains of the piericidin biosynthesis gene cluster yield insights into the mechanistic basis and ecoevolutionary implications of producing a complex mixture of antimicrobial compounds in a natural setting.
Heavy Truck Modeling for Fuel Consumption Simulations and Measurements (2001)

Fuel consumption for heavy trucks depends on many factors like roads, weather, and driver behavior that are hard for a manufacturer to influence. However, one design possibility is the powertrain configuration. Here a new simulation program for heavy trucks is created to find the configuration of the powertrain that gives the lowest fuel consumption for each transport task.
Using hardware vulnerability factors to enhance AVF analysis (2010)

Fault tolerance is now a primary design constraint for all major microprocessors. One step in determining a processor's compliance to its failure rate target is measuring the Architectural Vulnerability Factor (AVF) of each on-chip structure. The AVF of a hardware structure is the probability that a fault in the structure will affect the output of a program. While AVF generates meaningful insight into system behavior, it cannot quantify the vulnerability of an individual system component (hardware, user program, etc.), limiting the amount of insight that can be generated. To address this, prior work has introduced the Program Vulnerability Factor (PVF) to quantify the vulnerability of software. In this paper, we introduce and analyze the Hardware Vulnerability Factor (HVF) to quantify the vulnerability of hardware. HVF has three concrete benefits which we examine in this paper. First, HVF analysis can provide insight to hardware designers beyond that gained from AVF analysis alone. Second, separating AVF analysis into HVF and PVF steps can accelerate the AVF measurement process. Finally, HVF measurement enables runtime AVF estimation that combines compile-time PVF estimates with runtime HVF measurements. A key benefit of this technique is that it allows software developers to influence the runtime AVF estimates. We demonstrate that this technique can estimate AVF at runtime with an average absolute error of less than 3%.