gebhart/patrepeval huggingface dataset:
Three-Terminal Switch Model of Constant On-time Current Mode with External Ramp Compensation (2015)

Multiphase constant on-time current-mode control based on pulse distribution structure is widely used in voltage regulator application for microprocessor. To minimize ripple cancellation effect, external ramp compensation is used in commercial products. However, external ramp will introduce dynamic to the system and stability margin will be suffered without considering its effect. This paper first studies the effect of external ramp by deriving small-signal transfer function based on describing function method. It is found that external ramp brings additional dynamic, with time constant related with switching period. Then, a simple equivalent circuit model based on three-terminal switch concept is proposed, which considers the effect of external ramp by adding an additional R-L branch. The equivalent circuit model can be reduced to previous unified three-terminal switch model when external ramp is zero and can be reduced to model of constant on-time voltage mode control when external ramp is much larger than inductor current ramp. The proposed three-terminal switch model is a complete model, which can be used to examine all transfer functions and is accurate up to half of switching frequency. The analytical transfer functions are provided for easy reference. The model is verified by SIMPLIS simulation and experimental measurement.
New Single-Source Precursor Approach to Gallium Nitride (1995)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNew Single-Source Precursor Approach to Gallium NitrideDeborah A. Neumayer, Alan H. Cowley, Andreas Decken, Richard A. Jones, Vikas Lakhotia, and John G. EkerdtCite this: J. Am. Chem. Soc. 1995, 117, 21, 5893–5894Publication Date (Print):May 1, 1995Publication History Published online1 May 2002Published inissue 1 May 1995https://pubs.acs.org/doi/10.1021/ja00126a046https://doi.org/10.1021/ja00126a046research-articleACS PublicationsRequest reuse permissionsArticle Views344Altmetric-Citations81LEARN 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 Get e-Alerts
Mutational burden, immune checkpoint expression, and mismatch repair in glioma: implications for immune checkpoint immunotherapy (2017)

To clarify the relationships among TML, MMR, and immune checkpoint expression, we profiled the frequency of shared biomarker phenotypes. On the basis of a variety of potential biomarkers of response to immune checkpoints, only small subsets of glioma patients are likely to benefit from monotherapy immune checkpoint inhibition.
Onset Coding Is Degraded in Auditory Nerve Fibers from Mutant Mice Lacking Synaptic Ribbons (2010)

Synaptic ribbons, found at the presynaptic membrane of sensory cells in both ear and eye, have been implicated in the vesicle-pool dynamics of synaptic transmission. To elucidate ribbon function, we characterized the response properties of single auditory nerve fibers in mice lacking Bassoon, a scaffolding protein involved in anchoring ribbons to the membrane. In bassoon mutants, immunohistochemistry showed that fewer than 3% of the hair cells' afferent synapses retained anchored ribbons. Auditory nerve fibers from mutants had normal threshold, dynamic range, and postonset adaptation in response to tone bursts, and they were able to phase lock with normal precision to amplitude-modulated tones. However, spontaneous and sound-evoked discharge rates were reduced, and the reliability of spikes, particularly at stimulus onset, was significantly degraded as shown by an increased variance of first-spike latencies. Modeling based on in vitro studies of normal and mutant hair cells links these findings to reduced release rates at the synapse. The degradation of response reliability in these mutants suggests that the ribbon and/or Bassoon normally facilitate high rates of exocytosis and that its absence significantly compromises the temporal resolving power of the auditory system.
On‐line cell lysis and DNA extraction on a microfluidic biochip fabricated by microelectromechanical system technology (2008)

Integrating cell lysis and DNA purification process into a micrototal analytical system (microTAS) is one critical step for the analysis of nucleic acids. On-chip cell lysis based on a chemical method is realized by sufficient blend of blood sample and the lyzing reagent. In this paper two mixing models, T-type mixing model and sandwich-type mixing model, are proposed and simulation of those models is conducted. Result of simulation shows that the sandwich-type mixing model with coiled channel performs best and this model is further used to construct the microfluidic biochip for on-line cell lysis and DNA extraction. The result of simulation is further verified by experiments. It asserts that more than 80% mixing of blood sample and lyzing reagent which guarantees that completed cell lysis can be achieved near the inlet location when the cell/buffer velocity ratio is less than 1:5. After cell lysis, DNA extraction by means of a solid-phase method is implemented by using porous silicon matrix which is integrated in the biochip. During continuous flow process in the microchip, rapid cell lysis and PCR-amplifiable genomic DNA purification can be achieved within 20 min. The potential of this microfluidic biochip is illustrated by pretreating a whole blood sample, which shows the possibility of integration of sample preparation, PCR, and separation on a single device to work as portable point-of-care medical diagnostic system.
Autocorrelation of Golomb sequences (1995)

Golomb sequences form a class of polyphase sequences which have perfect periodic autocorrelation. Given certain constraints, they also have favourable aperiodic autocorrelation. The paper presents a comprehensive study of the asymptotic behaviour of the aperiodic autocorrelation function of Golomb sequences. Some bounds for this function are obtained.
Generic BIST architecture for testing of content addressable memories (2011)

Minimal March test algorithms are developed for single-port binary and ternary content addressable memories (CAMs). Based on these test algorithms a built-in-self-test (BIST) architecture for testing of CAMs is proposed. It is an extension of an existing BIST architecture for testing of static random access memories (SRAMs) and read-only memories (ROMs). This generic BIST architecture additionally supports the following important CAM specific features: power buffer-zones, multicycle compare operations, half/quarter words and walking patterns.
Erythroid Maturation and Globin Gene Expression in Mice With Combined Deficiency of NF-E2 and Nrf-2 (1998)

NF-E2 binding sites, located in distant regulatory sequences, may be important for high level α- and β-globin gene expression. Surprisingly, targeted disruption of each subunit of NF-E2 has either little or no effect on erythroid maturation in mice. For p18 NF-E2, this lack of effect is due, at least in part, to the presence of redundant proteins. For p45 NF-E2, one possibility is that NF-E2–related factors, Nrf-1 or Nrf-2, activate globin gene expression in the absence of NF-E2. To test this hypothesis for Nrf-2, we disrupted the Nrf-2 gene by homologous recombination. Nrf-2–deficient mice had no detectable hematopoietic defect. In addition, no evidence was found for reciprocal upregulation of NF-E2 or Nrf-2 protein in fetal liver cells deficient for either factor. Fetal liver cells deficient for both NF-E2 and Nrf-2 expressed normal levels of α- and β-globin. Mature mice with combined deficiency of NF-E2 and Nrf-2 did not exhibit a defect in erythroid maturation beyond that seen with loss of NF-E2 alone. Thus, the presence of a mild erythroid defect in NF-E2–deficient mice is not the result of compensation by Nrf-2.
Synthesis and evaluation of neoglycolipid for liposome modification. (1996)

Various kinds of the neoglycolipids, composed of N-acethylgalactosamine(GalNAc), a spacer arm and a lipid, were synthesized to modify the surface of liposomes and to investigate the distribution of the liposomes. The neoglycolipids, having octamethylene as a spacer arm, are only slightly soluble in various kind of solvents. However, by using tricthyleneglycol as a spacer arm, the solubility of the neoglycolipid was greatly improved without loss of the affinity towards hepatocyte in vivo. Liposomes modified with the neoglycolipid, which contained the branched lipid as an anchor, showed remarkable accumulation in the liver. However, liposomes modified with the straight chain lipid as an anchor showed the same accumulation in the liver as the control liposomes. The accumulation depends on the structure of the anchor part of the neoglycolipids. We synthesized the neoglycolipid, which contained three GalNAc residue, branched with L-glutamyl-L-glutamic acid (clustered GalNAc derivative). The clustered GalNAc derivative showed higher affinity towards hepatocyte than unclustered GalNAc derivative in vitro. The liposomes modified with the clustered GaINAc derivative were disappeared faster from plasma and accumulated more in the liver than the control liposomes after intravenous injection to rats. Although the accumulation of clustered GalNAc derivative coated liposomes in the liver was the same extent as the accumulation of non clustered GalNAc derivative modified liposomes. So cluster effect was not observed in in vivo examination.
Reduction of Cr(VI) by a Consortium of Sulfate-Reducing Bacteria (SRB III) (1994)

A consortium of bacteria with tolerance to high concentrations of Cr(VI) (up to 2,500 ppm) and other toxic heavy metals has been obtained from metal-refinishing wastewaters in Chengdu, People's Republic of China. This consortium consists of a range of gram-positive and gram-negative rods and has the capacity to reduce Cr(VI) to Cr(III) as amorphous precipitates which are associated with the bacterial surfaces. An endospore-producing, gram-positive rod and a gram-negative rod accumulate the most metallic precipitates, and, over time, 80 to 95% of Cr can be removed from concentrations ranging from 50 to 2,000 ppm (0.96 to 38.45 mM). Kinetic studies revealed a first-order constant for Cr removal of 0.1518 h for an initial concentration of 1,000 ppm (19.3 mM), and the sorption isothermal data could be interpreted by the Freundlich relationship. The sorption was not entirely due to a passive interaction with reactive sites on the bacterial surfaces since gamma-irradiated, killed cells could not immobilize as much metal. When U or Zn was added with the Cr, it was also removed and could even increase the total amount of Cr immobilized. The consortium was tolerant to small amounts of oxygen in the headspace of tubes, but active growth of the bacteria was a requirement for Cr immobilization through Cr(VI) reduction, resulting in the lowering of E(h). Our data suggest that the reduction was via H(2)S. This consortium has been named SRB III, and it may be useful for the bioremediation of fluid metal-refining wastes.
Research issues for transport protocols in satellite IP networks (2001)

Traditional transport layer flow control schemes proposed for IP networks have low performance when satellite links are involved in the communication. These problems are described along with the solutions previously proposed in the literature. For each solution the advantages and drawbacks of the existing solutions are pointed out. Both real-time and non-real-time applications are considered.
Novel gradient coils designed using a boundary element method (2007)

Abstract Boundary element methods offer a powerful approach for designing gradient coils, allowing the generation of coils wounds on arbitrarily shaped surface so as to produce any form of field variation that is consistent with Maxwell's equations. These methods are based on meshing the current carrying surface into an array of boundary elements. In this work, we have extended boundary element methods that have previously been used used for coil design and integrated a powerful mesh generating program so as to produce coils with totally arbitrary geometry. Four examples are used to illustrate how the modified method provides a single versatile coil design protocol. These relate to the design of: i) shielded head gradients with highly asymmetric surface geometry that give the highest possible gradient field strengths; ii) very short, shielded gradient coils to allow improved access to the subject; iii) bi‐planar coils generating highly asymmetric, stepped magnetic fields for use in fast imaging by multiple acquisition with micro‐ B 0 arrays (MAMBA); iv) an insertable set of head gradient coils with shoulder cut‐outs. © 2007 Wiley Periodicals, Inc. Concepts Magn Reson Part B (Magn Reson Engineering) 31B: 162–175, 2007
A Gabor sampling theorem and some time-bandwidth implications (2002)

We address the use of sampling representations for functions expressed in a Gabor expansion. Assuming that the window function of the expansion is bandlimited and that the Gabor coefficients vanish for a sufficiently high index in frequency, one easily obtains a Gabor sampling theorem from the classical Shannon-Kotelnikov (1949) result. This result is then explored to give insight into the relationships between the time bandwidth products of the signal and window, and the number of Gabor coefficients retained in a finite expansion.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
New Approaches to Catalyst Substrate Application for Diesel Engines (2001)

<div class="htmlview paragraph">Nearly all real Diesel engine operation is leading to low exhaust temperatures. Standard catalyst technique remains therefore for significant time below light off. To improve the conversion behavior two approaches were made: placement of tailor fitted catalysts as close as possible to the engine exhaust port before turbocharger and usage of close coupled catalysts with the so-called hybrid design. Both measures are providing visible progress in reducing Diesel engine emissions. Tests were made with modern Diesel engines both for passenger cars and heavy duty vehicles.</div>
DNA sequences in the rat osteocalcin gene that bind the 1,25-dihydroxyvitamin D3 receptor and confer responsiveness to 1,25-dihydroxyvitamin D3. (1990)

The 5' flanking region of the rat osteocalcin gene has been shown to confer responsiveness to 1,25-dihydroxyvitamin D3 [1,25(OH)2D3] after transfection of fusion genes into ROS 17/2.8 cells. Deletion analysis has demonstrated that there are at least two domains in this 5' flanking region that contribute to 1,25(OH)2D3 responsiveness; however, only the downstream region is able to confer 1,25(OH)2D3 responsiveness to either the native osteocalcin promoter or to a heterologous viral promoter (herpes simplex virus thymidine kinase). The proximal region responsible for 1,25(OH)2D3 induction of the rat osteocalcin gene lies 458 base pairs upstream from the transcription start site of this gene. A 25-base-pair oligonucleotide corresponding to the sequences in this region is able to confer 1,25(OH)2D3 responsiveness to the thymidine kinase promoter in an orientation-independent fashion. This sequence contains three copies of a short sequence that are homologous to "half-sites" of steroid response elements. Gel-retardation assays using porcine intestinal nuclear extract as a rich source of 1,25(OH)2D3 receptor demonstrated retardation in the migration of probes containing the sequence noted above. A monoclonal antibody directed against the 1,25(OH)2D3 receptor caused further retardation in the migration of these protein-DNA complexes. Therefore, the sequences represented in this oligonucleotide encompass the sequences necessary for binding of the 1,25(OH)2D3 receptor to DNA as well as those sequences necessary for 1,25(OH)2D3 to induce osteocalcin gene transcription.
Small Footprint Air-gap Multi Fiber Connector with Low Loss and Low Mating Force (2018)

Multi-fiber connector with low mating force (3N) has been developed by applying gap between fibers. The proposed multi-mode/single-mode connector has achieved an average loss of 0.49dB/0.67dB and more than 38dB/60dB return loss without anti-reflection coating.
[Analysis of spatial frequency characteristics of complex receptive fields]. (1977)

The difference fB2-fB1=deltaf and ratio fB2/fB1=R of the bandwidth boundary frequencies fB1, fB2 of spatial frequency characteristic of complex receptive field depends on the size of RF and spatial structure of excitatory and inhibitory zones. deltaf and r are independent of the weighting functions of excitatory and inhibitory zones. The theoretical value of r is similar to data which was obtained in psychophysical and physiologycal experiments. The dependence of contrast sensitivity on spatial frequency can be explained by dependence of the envelope of weighting functions of exitatory (inhibitory) zones on the spatial frequency.
First order quasiphase matching in LiNbO <sup>3</sup> (1992)

First order quasiphase matched second harmonic generation in LiNbO3 channel waveguides is experimentally demonstrated and compared with theoretical estimation. Conversion efficiencies of 11%/W for l cm long interaction length were measured for the generation of 435 and 450 nm blue light, which is the same order of magnitude as calculated for the structure.
An Explicit Derivation of the Relationships Between the Parameters of an Interdigital Structure and the Equivalent Transmission-Line Cascade (1967)

The general nth-order admittance matrix for an array of parallel conductors placed between ground planes is exhibited, subject to the assumption that direct coupling exists only between adjacent conductors and that only a TEM wave is present whenever all the conductors but one are grounded. When the alternate terminals of one of these arrays are connected to ground, as in an interdigital bandpass filter, the admittance matrix yields a subsystem of equations which, except for sign, is identical in form with the node equations of suitably selected transmission-line cascade. The identification of the coefficients in these similar systems of equations explicitly determines the coefficients of the admittance matrix in terms of the parameters of the prototype transmission-line cascade. In turn, the capacities to ground and the mutual capacities, each per unit length, for the array of parallel conductors can be determined from the coefficients of its admittance matrix by imposing the pertinent voltage conditions on the admittance equations. Thus, one arrives, explicitly, at the general formulas used in the design of interdigital filters which relate the capacities per unit length of the parallel conductors to the parameters of the prototype transmission-line cascade. It is shown that, if the first element of the interdigital structure is open-circuited, the transmission-line cascade begins with a series, open-circuited quarter-wave stub while, if the first element of the interdigital structure is short-circuited, the first element of the cascade is a shunt, short-circnited quarter-wave stub. Extensions of the method to equivalences with other prototype networks are suggested. In the Appendix, closed expressions for the self and mutual admittances of the parallel conductor array are given in terms of the self impedances and coupling coefficients of the nth-order impedance matrix proposed by Bolljahn and Matthaei for this structure, subject to the assumption of no coupling between nonadjacent conductors. These are shown to be consistent with the requirement that the admittance matrix be the reciprocal of the impedance matrix.
Hierarchically Supervised Latent Dirichlet Allocation (2011)

We introduce hierarchically supervised latent Dirichlet allocation (HSLDA), a model for hierarchically and multiply labeled bag-of-word data. Examples of such data include web pages and their placement in directories, product descriptions and associated categories from product hierarchies, and free-text clinical records and their assigned diagnosis codes. Out-of-sample label prediction is the primary goal of this work, but improved lower-dimensional representations of the bagof-word data are also of interest. We demonstrate HSLDA on large-scale data from clinical document labeling and retail product categorization tasks. We show that leveraging the structure from hierarchical labels improves out-of-sample label prediction substantially when compared to models that do not. 1
Aggregation and Proration in Forecasting (1979)

Conditions are determined under which (a) the sum of forecasts of sales in market segments is preferred to a forecast of the whole market and (b) a forecast of an individual market segment is preferred to a forecast obtained through proration of a forecast of the whole market. The comparisons in (a) and (b) are also applied to the problem of forecasting for several time periods into the future.
<title>Magnetoelastic Force Feedback Sensors For Robots And Machine Tools</title> (1983)

The objective of this paper is to describe the Naval Surface Weapons Center (NSWC) Program for developing high performance, simple, rugged, cost effective magnetoelastic force feedback sensors for robots and machine tools. Recent advances in magnetoelastic materials technologies have paved the way for corresponding improvements in the state-of-the-art in force feedback sensors for robots and machine tools. Also, NSWC has designed magnetic circuits which are easily adapted to force feedback sensors. In this paper, magnetoelastic materials are described along with the properties that make them potentially such outstanding force feedback sensors. Following this, the Naval Surface Weapons Center Program is detailed including advances in materials research, in simple, low cost electronic and magnetic circuits, and designs for force feedback sensor modules. The results are in the public domain.