gebhart/patrepeval huggingface dataset:
A simple gradient sign algorithm for transmit antenna weight adaptation with feedback (2003)

In this paper, a simple algorithm for adaptation of the complex baseband weights of a transmit antenna array using feedback from the receiver is proposed and analyzed. The system utilizes stochastic gradient adaptation to maximize the power delivered to the receiver for a constrained transmission power, which provides both fading diversity and beam steering gain. Dual perturbed transmission weight vectors are time multiplexed onto the pilot signal, and the receiver generates feedback selecting the perturbed weight vector which delivers greater power. This feedback is used to provide weight adaptation at the transmitter, and this adaptation is shown to be an update by a coarse estimate of the gradient of the delivered power. The performance of the algorithm is analyzed in terms of convergence and tracking of an AR1 fading channel, with simulations confirming the analysis. Bit error rate (BER) simulations in a dynamic fading channel show that the algorithm outperforms previously proposed vector selection feedback, and in slower fading, the algorithm substantially outperforms diversity space time coding.
Imidotitanium Complexes as Hydroamination Catalysts:  Substantially Enhanced Reactivity from an Unexpected Cyclopentadienide/Amide Ligand Exchange (2001)

ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTImidotitanium Complexes as Hydroamination Catalysts: Substantially Enhanced Reactivity from an Unexpected Cyclopentadienide/Amide Ligand ExchangeJeffrey S. Johnson and Robert G. BergmanView Author Information Department of Chemistry and Center for New Directions in Organic Synthesis University of California, Berkeley, California 94720 Cite this: J. Am. Chem. Soc. 2001, 123, 12, 2923–2924Publication Date (Web):March 2, 2001Publication History Received10 October 2000Published online2 March 2001Published inissue 1 March 2001https://pubs.acs.org/doi/10.1021/ja005685hhttps://doi.org/10.1021/ja005685hrapid-communicationACS PublicationsCopyright © 2001 American Chemical SocietyRequest reuse permissionsArticle Views2893Altmetric-Citations271LEARN 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 (2)»Supporting Information Supporting Information SUBJECTS:Allenes,Amines,Catalysts,Hydrocarbons,Organic reactions Get e-Alerts
Piezohydraulische Feinjustierung von Großbauteilen (2015)

Kurzfassung Eine automatisierte Feinausrichtung von tonnenschweren Großbauteilen in Werkzeugmaschinen bietet enormes Einsparpotenzial bezüglich der Rüstzeiten. Am Beispiel einer Profilschleifmaschine wird erstmals eine piezohydraulische Feinpositioniereinheit mit vier Freiheitsgraden hinsichtlich industrieller Anforderungen entwickelt und erprobt. Dieser Beitrag stellt den zugrundeliegenden Lösungsansatz dar und belegt eine Positionierauflösung der Antriebseinheit im Mikrometerbereich bei ausreichender Stellkraft.
Prognosis and treatment decisions in patients with breast cancer without axillary node involvement (1992)

Prognostic factors can be used to help make treatment decisions for patients with breast cancer without axillary node involvement. However, the final treatment decision must take into account all aspects of the patient and her disease, and the physician must help the patient evaluate her prognostic factors, arrive at an understanding of her particular risk of recurrence, and weigh the potential benefits and risks of adjuvant therapy.
Dynamic Metrology and ASTM E57.02 Dynamic Measurement Standard. (2017)

Optical tracking systems are used in a wide range of fields, and their market has dramatically increased over the past several years, reaching $1.2 billion in sales revenue in 2014. This article describes the new ASTM E3064 standard test method procedures for optical tracking systems and will outline the theoretical basis for the analysis of the data from these systems. By way of an example, we will also verify the performance of a 12-camera optical tracking system using these standard procedures and related analysis. An artifact, developed at the National Institute of Standards and Technology (NIST), was verified by a coordinate measuring machine (CMM) and then used in two experiments to verify the test method. This and other in-depth articles are intended to be base references for ASTM E3064.
Resource potential of the western North Atlantic Basin (1986)

Abstract We here consider the petroleum resources only of the off shelf portion of the western North Atlantic Ocean. Very little information is available for this region; off the eastern United States, only four petroleum exploration holes have been drilled in one restricted area seaward of the shelf, off the Baltimore Canyon trough. However, by interpreting seismic reflection profiles and Stratigraphie data from the Deep Sea Drilling Project (DSDP) and other wells on the adjacent slope and shelf, we can evaluate the geologic conditions that existed during development of the basin and that might lead to petroleum accumulations. The wellknown factors that lead to oil and gas accumulations are availability of source beds, adequate maturation, and the presence of reservoir beds and seals configured to create a trap. The western boundary of the area considered in this paper, the present sloperise break, is one that has developed from the interplay of sedimentation and erosion at the continental margin; these processes are affected by variations in margin subsidence, sedi-ment input, oceanic circulation, sea level, and other factors. Thus the sloperise break has migrated over time and is locally underlain by slope and shelf deposits, as well as deepbasin facies. These changes in depositional environments may well have caused juxtaposition of source and reservoir beds with effective seals. Several papers have been written on the hydrocarbon pros-pects of the (Jansa and MacQueen, 1978; Roberts and Caston, 1975; Dow, 1979; Hedberg, 1976; Mclver, 1975; Schott and others, 1975;
PROPERTIES OF IDLI BATTER DURING ITS FERMENTATION TIME (2007)

Idli is a traditional fermented rice and black gram-based breakfast food of South India. Idli batter was prepared from soaking polished parboiled rice and decorticated black gram for 4 h at 30 ± 1C in water. The soaked mass was ground to 0.5- to 0.7-mm particle size batter using wet grinder with adequate amount of water. The blend ratios of 2:1, 3:1 and 4:1 (v/v) batter were allowed for fermentation (0, 6, 12, 18 and 24 h) adding 2% of salt. The idli batter parameters viz. bulk density, pH, percent total acidity, flow behavior index and consistency coefficient were studied for different fermentation times and blend ratios. The bulk density, pH and percentage total acidity of batter during different fermentation times and blend ratios ranged between 0.94 and 0.59 g/cm3, 5.9 and 4.1 and 0.443 and 0.910%, respectively. The consistency coefficient at any fermentation time shows increasing trend as the rice to black gram ratio increased. The flow behavior index indicated strong non-Newtonian fluid behavior (pseudoplastic) of idli batter at different fermentation times and blend ratios.
Preparation of Attrition-Resistant Spray-Dried Fe Fischer−Tropsch Catalysts Using Precipitated SiO2 (2001)

Spray-dried Fe Fischer−Tropsch (FT) catalysts can be prepared that have sufficient attrition resistance for use in slurry bubble column reactors without sacrifice of their activities and selectivities. Earlier studies from our group have shown that the type (binder or binder-and-precipitated) and concentration of silica incorporated into Fe spray-dried Fischer−Tropsch (FT) catalysts have significant impacts on catalyst attrition and that attrition resistance is strongly dependent on particle density. Although the use of a refractory oxide such as SiO2 is necessary to produce and maintain the high active surface area of a catalyst, the use of high concentrations of binder or binder-and-precipitated SiO2 results in poorer attrition resistance. This paper reports on the effect of precipitated silica by itself on the attrition resistance of Fe FT catalysts produced by spray drying. Earlier work by others suggested that the use of precipitated SiO2 alone produced less than adequate attrition-resistant Fe catalysts. However, our previous results hinted at the possibility for the preparation of attrition-resistant catalysts using smaller concentrations of precipitated SiO2. Spray-dried Fe catalysts were prepared having a composition of 100 Fe/5 Cu/4.2 K but with varying amounts of precipitated SiO2. The results show that the use of small amounts of precipitated SiO2 alone in spray-dried Fe catalysts can result in good attrition resistance. All catalysts investigated with SiO2 weight percentages ≤12 produced fines less than 10 wt % during the jet cup attrition test, making them suitable for long-term use in a slurry bubble column reactor. Thus, concentration rather than type of SiO2 incorporated into the catalyst has a more critical impact on the catalyst attrition resistance of spray-dried Fe catalysts. Lower amounts of SiO2 added to a catalyst give higher particle densities and, therefore, higher attrition resistances. To produce a suitable SBCR catalyst, however, the amount of SiO2 added has to be optimized to provide adequate surface area, particle density, and attrition resistance.
Adaptive ferroelectric phase shifters for phased array antenna (2003)

The Ba/sub x/Sr/sub 1-x/TiO/sub 3/ (BST) series of ferroelectric materials is being used for microstrip phase shifters. The phase shift performance achieved by the phase shifter module is being compared to the beam scanning performance of the phased array antenna. A beam scanning of 17 deg and 30 deg are achievable in the two array designs.
Cytosine Deaminase fromEscherichia coli—Production, Purification, and Some Characteristics (1986)

We wanted to obtain a large amount of cytosine deaminase from Escherichia coli. This enzyme deaminates 5-fluorocytosine and is thermostable. It is needed for trial use in a novel chemotherapy for cancer in combination with 5-fluorocytosine. We improved the conditions of its production by examining the culture conditions. A pH-stat culture with the culture pH controlled at around 8.5 using citric acid gave efficient production of cell mass and enzyme activity. The enzyme was purified 1200-fold from the cell-free extract, to homogeneity, using two kinds of affinity adsorbents prepared for this purpose. The enzyme had a molecular weight of 200,000 (gel permeation), and seemed to be an SH-enzyme. The purified enzyme was thermostable.
Object-oriented programming (1989)

Object-oriented programming involves a new way of thinking about and programming applications. The thought process and techniques are introduced through a discussion of the language Smalltalk and through an illustrative example. These concepts are extended to a hybrid functional language, object-oriented system, KEE®, and illustrated through the use of knowledge-based system examples.
Redesigning existing transcranial magnetic stimulation coils to reduce energy: application to low field magnetic stimulation (2018)

The redesigned LFMS coil is substantially smaller and more energy-efficient than the original, improving cost, power consumption, and portability. These improvements could facilitate deployment of LFMS in the clinic and potentially at home. This coil redesign approach can also be applied to other magnetic stimulation paradigms. Finally, the anatomically-accurate E-field simulation of LFMS can be used to interpret clinical LFMS data.
Endothelial dysfunction in systemic lupus patients with low disease activity: evaluation by quantification and characterization of circulating endothelial microparticles, role of anti-endothelial cell antibodies (2010)

Monochrome composite marker is efficient in detecting the whole population of EMps using flow cytometry. SL patients with low disease activity have a marked endothelial dysfunction. EMps released from the endothelium originate from activated and non-activated cells. AECAs do not seem to be the main cause of endothelial dysfunction in this population.
Robust on-line model-based object detection from range images (2009)

A mobile robot that accomplishes high level tasks needs to be able to classify the objects in the environment and to determine their location. In this paper, we address the problem of online object detection in 3D laser range data. The object classes are represented by 3D point-clouds that can be obtained from a set of range scans. Our method relies on the extraction of point features from range images that are computed from the point-clouds. Compared to techniques that directly operate on a full 3D representation of the environment, our approach requires less computation time while retaining the robustness of full 3D matching. Experiments demonstrate that the proposed approach is even able to deal with partially occluded scenes and to fulfill the runtime requirements of online applications.
RelTR: Relation Transformer for Scene Graph Generation (2022)

Different objects in the same scene are more or less related to each other, but only a limited number of these relationships are noteworthy. Inspired by DETR, which excels in object detection, we view scene graph generation as a set prediction problem and propose an end-to-end scene graph generation model RelTR which has an encoder-decoder architecture. The encoder reasons about the visual feature context while the decoder infers a fixed-size set of triplets subject-predicate-object using different types of attention mechanisms with coupled subject and object queries. We design a set prediction loss performing the matching between the ground truth and predicted triplets for the end-to-end training. In contrast to most existing scene graph generation methods, RelTR is a one-stage method that predicts a set of relationships directly only using visual appearance without combining entities and labeling all possible predicates. Extensive experiments on the Visual Genome and Open Images V6 datasets demonstrate the superior performance and fast inference of our model.
Synthesis and Properties of Polyfunctional Cyclic β‐Alkoxy‐α,β‐Unsaturated Ketones Based on 4‐Methylene‐1,3‐dioxolanes (2018)

New CCl 3 ‐ and CF 3 ‐substituted enones, bearing additional hidden hydroxymethyl functions, were prepared by acylation of 4‐methylene 1,3‐dioxolanes. The synthesized enones are interesting building blocks for agrochemical and medicinal chemistry research. The reactivity of synthesized enones with various amines was studied, and enaminones 13 and 14 were obtained under NH 3 interaction; the reaction with aliphatic primary amines afforded enaminones 17 in high yields as equilibrium mixtures of E and Z isomers. The reaction of fluorinated enone 9c with anilines afforded a mixture of products, including non‐aromatic heterocyclic compounds 25 and 26 bearing the CF 3 group as well as furan 27 with CF 3 and amino functions at positions 5 and 3, respectively. The hydrolysis of enone 9c afforded cyclic compound 11 .
Real-time displacements measurement using FPGA and interferometry (2006)

In this work, implementation of a system-on-chip in a field programmable gate array (FPGA) is described. This system analyzes temporal phase-shift in a pattern of interference fringes, in order to measure displacements in real-time. The interferograms images are introduced to the FPGA through a charge coupled device (CCD). A pipeline architecture is used to the stages of phase analysis and display of the results. The system consumes just 2030 slices of an XC2V3000 and it runs at 65 MHz clock frequency.
Reliable method for material characterisation using quasi-optical free-space measurement in W-band (2008)

An extension to the Nicolson–Ross–Weir (NRW) algorithm to retrieve complex permittivity and permeability from both reflection and transmission coefficients is presented. This new numerical retrieval approach solves the phase ambiguity problem associated with the NRW algorithm. A free-space quasi-optical two-port measurement setup is employed to obtain the scattering parameters of different samples in the W-band frequency range. The results of different samples with various thicknesses are presented. The advantages and limitations of the method are also discussed.
Protocol for the Standardized Generation of Forward Programmed Cryopreservable Excitatory and Inhibitory Forebrain Neurons (2020)

This protocol describes a highly standardized pipeline for transcription factor-mediated forward programming of human pluripotent stem cells into highly enriched glutamatergic or GABAergic neurons followed by a cryopreservation step that enables the generation of large quality-controlled batches. This approach is particularly useful for reducing interexperimental variability in the context of collaborative studies across different locations and time points. For complete details on the use and execution of this protocol, please refer to Meijer et al. (2019) and Rhee et al. (2019).
Ophthalmic hazards associated with laser endoscopy (1979)

It is well documented that work with lasers poses a risk of ocular radiation damage. We specifically investigated the risk of intense backflash during laser treatment of gastrointestinal bleeding. Two well-characterized models of mucosal reflections are used to document flashback levels on several standard fiberoptic endoscopes. Both argon and neodymium-YAG laser sources are evaluated. Filter attachments that will provide adequate protection from the flashback hazard are also described.
Fluorescence Differentiation of ATP-Related Multiple Enzymatic Activities in Synovial Fluid as a Marker of Calcium Pyrophosphate Deposition Disease Using Kyoto Green (2020)

Calcium pyrophosphate deposition disease (CPPD) is a crystal induced inflammation in joints, and causes severe pain in elderly people. The accumulation of pyrophosphate (PPi) in synovial fluid (SF) results from several enzymatic reactions, especially the highly activated e-NPPs, which catalyze the conversion of ATP to PPi. This study demonstrates the detection of relative catalytic activity of 3 enzymes-ecto-nucleotide pyrophosphatase/phosphodiesterases (e-NPPs), tissue nonspecific alkaline phosphatase (TNAP), and ecto-nucleoside triphosphate diphosphohydrolases (e-NTPDases)-using a single molecular sensor called Kyoto Green. Kyoto Green exhibits excellent performance in sensing the catalytic activity of the commercial representatives of the e-NPPs, TNAP, and e-NTPDases, which are ENPP1, PPase, and apyrase, respectively, in both single-enzyme and multi-enzyme assays. Analysis of SF enzymes in 19 SF samples from human and swine revealed moderate activity of e-NPPs, high activity of e-NTPDases, and low activity of TNAP. Our newly developed method for analysis of multiple enzymatic activities using Kyoto Green in biological SF will assist improvement in accuracy of the CPPD prognosis/diagnosis, which will minimize unnecessary medical procedures.
Reticle inspection optimization for 90-nm and 130-nm technology nodes using a multibeam UV wavelength inspection tool (2003)

As the lithography design rule of IC manufacturing industry migrates into sub-130nm nodes, low k<sub>1</sub> factor prevails, the mask error enhancement factor (MEEF) increases. Low k<sub>1</sub> processing calls for aggressive sub-resolution assist features and the use of attenuated phase shift masks (AttPSMs). The aggressive OPC features pose challenges to reticle inspection due to high false detection, which is time-consuming for defect classification and impacts the throughput of mask manufacturing. Moreover, the high transmission of the shifter material of 193 nm AttPSM also challenges the UV-based reticle inspection tools with high nuisance counts due to undesirable optical diffraction effects. For a given reticle inspection tool, it is necessary to calibrate the system contrast between the clear and opaque regions (quartz/chrome or quartz/MoSi) of the reticles. In this study, we present the influences of various calibration conditions on sensitivity, false and nuisance detection of reticle inspections. Both the STARlight contamination inspections and the die-to-die pattern inspections were carried out using the KLA-Tencor TeraStar inspection tools with production masks and programmed defect test masks including binary intensity masks (BIMs) and AttPSMs. Successful applications with low false detection and adapted sensitivity will be illustrated in terms of optimizing the calibration setup.
Dynamic stand for assessing the time spent on human operator thinking forms (2019)

The paper considers design features and functionality of the dynamic stand for assessing the time spent on human operator thinking forms during the hidden (latent) period as information passes through the brain according to experimental data working in Man-Machine Systems. This research is of interest as such a system is intellectual, so it is necessary to determine the pure delay time spent to implement thinking forms for assessing the quality of decisions made by a human operator in the control process. The study shows that a number of Wiener orthogonal G-functionals provides the most complete and rigorous human operator dynamics description and mathematical capabilities for calculating the necessary delay time.