gebhart/patrepeval huggingface dataset:
Distributed assignment algorithms for multihop packet radio networks (1989)

New distributed dynamic channel assignment algorithms for a multihop packet radio network are introduced. The algorithms ensure conflict-free transmissions by the nodes of the network. The basic idea of the algorithms is to split the shared channel into a control segment and a transmission segment. The control segment is used to avoid conflicts among nodes and to increase the utilization of the transmission segment. It is shown how these algorithms can be used in order to determine time-division multiple access (TDMA) cycles with spatial reuse of the channel.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Optical effects on the surrounding structure during quantitative analysis using indocyanine green videoangiography: A phantom vessel study (2017)

Various reports have been published regarding quantitative evaluations of intraoperative fluorescent intensity studies using indocyanine green (ICG) with videoangiography (VAG). The effects of scattering and point-spread functions (PSF) on quantitative ICG-VAG evaluations have not been investigated. Clinically, when ICG is administered through the peripheral vein, it reaches the tissue intra-arterially. To achieve more reliable intraoperative quantitative intensity evaluations, we examined the impact of high-intensity structures on close areas. The study was conducted using a phantom model and surgical fluorescent microscope. A region of interest (ROI) was created for the vessel model and another ROI was created within 3 cm of that. With an ROI of 6.8 mm in the vessel phantom model, 10% intensity was confirmed, even though there was no fluorescent structure. Intensity decreased gradually as the ROI moved further from the vessel model. Our study results suggest that the presence of a high-intensity structure and the size of the ROI may affect quantitative intensity evaluations using ICG-VAG. Results of linear regression analysis indicate that the relationship of intensity (Y) and distance (X) is as follows: Y(real/A) = 29 Exp(-0.062X) + 164.3 Exp(-1.81X). The optical effect should be considered when performing an intraoperative intensity study with a surgical microscope.
CD22-mediated stimulation of T cells regulates T-cell receptor/CD3-induced signaling. (1992)

Interaction between B lymphocytes and other cell types is mediated in part by the B-cell adhesion molecule CD22. Recent work has suggested one of the T-cell ligands of B cells to be CD45RO, an isoform of the receptor-linked phosphotyrosine phosphatase CD45. Here we demonstrate direct interaction between CD22 and several isoforms of CD45, including CD45RO, and propose that the interaction may participate in regulation of lymphocyte signaling. Cross-linking of CD3 and CD22 T-cell ligands with anti-CD3 antibody and soluble CD22 is shown to block anti-CD3-induced intracellular calcium increase and to inhibit tyrosine phosphorylation of phospholipase C gamma 1. These effects are consistent with those observed upon coligation of CD3 and CD45 with antibody, providing support to the possibility that ligand-mediated stimulation of CD45 may result in modulation of substrate phosphorylation and lymphocyte activation.
Software Resolver-to-Digital Converter for Compensation of Amplitude Imbalances using D-Q Transformation (2013)

Resolvers are transducers that are used to sense the angular position of rotational machines. The analog resolver is necessary to use resolver to digital converter. Among the RDC software method, angle tracking observer (ATO) is the most popular method. In an actual resolver-based position sensing system, amplitude imbalance dominantly distorts the estimate position information of ATO. Minority papers have reported position error compensation of resolver's output signal with amplitude imbalance. This paper proposes new ATO algorithm in order to compensate position errors caused by the amplitude imbalance. There is no need premeasured off line data. This is easy, simple, cost-effective, and able to work on line compensation. To verify feasibility of the proposed algorithm, simulation and experiments are carried out.
Standardized Handwriting to Assess Bradykinesia, Micrographia and Tremor in Parkinson's Disease (2014)

This study shows that standardized handwriting can provide objective measures for bradykinesia, tremor and micrographia to distinguish Parkinson patients from healthy control participants.
Cluster structure of stable dissolved gas nanobubbles in highly purified water (2009)

Experiments using phase-modulation interference microscopy and Mueller-matrix polarimetry show that double-distilled water free of foreign solid matter contains macroscopic light scatterers. Numerical calculations suggest that these scatterers can be represented as micrometer-size clusters of polydisperse air bubbles with effective radii between 70 and 90 nm. The fractal dimension of the clusters varies from 2.4 to 2.8, and their concentration is on the order of 106 cm−3.
Analyzing end-to-end delivery delay in pure VoIP networks (2003)

Today, standards-based quality of service mechanisms are not universally deployed across Internet service provider backbones. As a result, many carriers that are deploying VoIP networks are segregating voice traffic from the data and installing pure VoIP backbones in order to better guarantee high quality. Of particular interest is maintaining end-to-end delivery of the voice information within some time bounds. This paper examines sources of end-to-end delays associated with VoIP calls, discusses differences between fixed and variable rate coding, and illustrates how trading off packet size versus router delay can impact the number of voice calls supportable by the network.
Nucleotide sequence and genetic analysis of the Azotobacter chroococcum nifUSVWZM gene cluster, including a new gene (nifP) which encodes a serine acetyltransferase (1991)

Nucleotide sequence was obtained for a region of 7,099 bp spanning the nifU, nifS, nifV, nifW, nifZ, and nifM genes from Azotobacter chroococcum. Chromosomal mutations constructed at several sites within the locus confirmed a requirement for this region for expression of the molybdenum nitrogenase in this organism. The genes are tightly clustered and ordered as in Klebsiella pneumoniae except for two additional open reading frames (ORFs) between nifV and nifW. The arrangement of genes in A. chroococcum closely matches that described for Azotobacter vinelandii. The polypeptide encoded by ORF4 immediately downstream from nifV is 41% identical over 186 amino acids to the product of the cysE gene from Escherichia coli, which encodes serine acetyltransferase (SAT), a key enzyme in cysteine biosynthesis. Plasmids which potentially express ORF4 complemented E. coli JM39, a cysteine auxotroph which lacks SAT. SAT activity was detected in crude extracts of one such complemented strain. A strain of A. chroococcum carrying a chromosomal disruption of ORF4 grew normally with ammonium as the N source but more slowly than the parental strain when N2 was the sole N source. These data suggest that ORF4 encodes a nif-specific SAT required for optimizing expression of nitrogenase activity. ORF4 was assigned the name nifP. nifP may be required to boost rates of synthesis or intracellular concentrations of cysteine or methionine. Sequence identity between nifV and leuA gene products suggests that nifV may catalyze a condensation reaction analogous to that carried out by isopropylmalate synthase (LEUA) but in which acetyl coenzyme and alpha-ketoglutarate are substrates for the formation of homocitrate, the proposed product of NIFV activity.
Novel two step synthesis of pyrazoles and isoxazoles from aryl methyl ketones (1977)

Abstract Various acetyl aromatics when reacted with dimethylformamide dimethyl acetal gave 1‐aryl‐3‐dimethylamino‐2‐propen‐1‐ones. These intermediates are masked β‐ketoaldehydes and react with hydrazine hydrate or hydroxylamine at room temperature to give in good yields pyrazoles or isoxazoles.
Identification of a truncated form of the nerve growth factor receptor. (1988)

Schwann cells express growth factor (NGF) receptors on their cell surface in response to axotomy, a phenomenon that can be demonstrated both in vivo and in vitro. The predominant form of the NGF receptor on Schwann cells exists as an approximately equal to 80-kDa band, as determined by NaDodSO4/PAGE. We demonstrate that cultured Schwann cells shed a truncated (50-kDa) form of the NGF receptor (NGF-Rt) into their medium. Other cell types that shed the NGF-Rt into medium include a rat schwannoma and, to a lesser extent, PC12 cells and superior cervical ganglion neurons. NGF-Rt was not found in media conditioned by mixed neuron/glia cultures from various brain regions, or anterior pituitary cells derived from rat. In vivo, NGF-Rt was present in neonatal rat urine, and its presence was developmentally regulated: levels were high in postnatal day-1 rat urine and declined to low, but detectable, levels by weeks 4 and 8. NGF-Rt was also found in amniotic fluid and in the stomach contents of fetal rats. Maternal urine (pre- and postnatal) had slightly elevated NGF-Rt levels over normal adult urine. NGF-Rt was detected in rat plasma and showed developmental regulation similar to that found for urine. In addition, a 77-kDa receptor species was detected in plasma during early development. Finally, NGF-Rt was significantly elevated in the urine of adult rats with bilateral sciatic nerve lesions. These findings suggest that the developmentally regulated release of NGF-Rt, present in plasma and other body fluids, plays a regulatory role in nervous system development.
Classification with reject option in gene expression data (2008)

Companion Website. http://gsp.tamu.edu/Publications/rejectoption/
An electromechanical material testing system for<i>in situ</i>electron microscopy and applications (2005)

We report the development of a material testing system for in situ electron microscopy (EM) mechanical testing of nanostructures. The testing system consists of an actuator and a load sensor fabricated by means of surface micromachining. This previously undescribed nanoscale material testing system makes possible continuous observation of the specimen deformation and failure with subnanometer resolution, while simultaneously measuring the applied load electronically with nanonewton resolution. This achievement was made possible by the integration of electromechanical and thermomechanical components based on microelectromechanical system technology. The system capabilities are demonstrated by the in situ EM testing of free-standing polysilicon films, metallic nanowires, and carbon nanotubes. In particular, a previously undescribed real-time instrumented in situ transmission EM observation of carbon nanotubes failure under tensile load is presented here.
Practical experience recording and indexing of Life Log video (2005)

This paper presents an experience recording system and proposes practical video retrieval techniques based on Life Log content and context analysis. We summarize our effective indexing methods including content based talking scene detection and context based key frame extraction based on GPS data. The voice annotation and detection is proposed for practical indexing method. Moreover, we apply an additional body sensor to record our life style and analyze human's physiological data for Life Log retrieval system. In the experiments, we demonstrated various video indexing results which provided their semantic key frames and Life Log interfaces to retrieve and index our life experiences effectively.
Design of a lower-error fixed-width multiplier for speech processing application (1999)

A lower-error and lower-variance n/spl times/n multiplier is suitably proposed for VLSI design. Considering the next lower significant stage in P/sub n-1/ column and a useful error-compensation model in the least significant part, and utilizing a near optimized index to classify the error terms are our strategies in order to achieve lower error and variance as compared with previously proposed structure in the subproduct-array of the Baugh-Wooley algorithm. This novel structure applied to the fixed-width low-pass digital FIR filter for a speech signal processing system has excellent performance in reducing maximum error, average error, and variation of errors.
Intraoperative Parathyroid Hormone Monitoring (2004)

Abstract The principles of minimally invasive parathyroidectomy include the successful preoperative localization of a solitary adenoma, a targeted operative approach that does not disturb the normal parathyroid glands, and intraoperative confirmation of excision of all hypersecreting parathyroid tissue. By providing real‐time feedback to the surgical team, the rapid PTH assay allows surgeons to assess the completeness of parathyroid resection without visualizing all the parathyroid glands. Intraoperative PTH monitoring facilitates the use of local anesthesia, decreases the duration of surgery, and allows ambulatory surgery in most patients. This article reviews current recommendations and controversies surrounding the use of intraoperative PTH monitoring during parathyroidectomy.
A novel enrichment strategy reveals unprecedented number of novel transcription start sites at single base resolution in a model prokaryote and the gut microbiome (2016)

Cappable-seq allows for the first time the capture of the 5' end of primary transcripts. This enables a unique robust TSS determination in bacteria and microbiomes. In addition to and beyond TSS determination, Cappable-seq depletes ribosomal RNA and reduces the complexity of the transcriptome to a single quantifiable tag per transcript enabling digital profiling of gene expression in any microbiome.
Substrate Specificities of Hybrid Naphthalene and 2,4-Dinitrotoluene Dioxygenase Enzyme Systems (1998)

Bacterial three-component dioxygenase systems consist of reductase and ferredoxin components which transfer electrons from NAD(P)H to a terminal oxygenase. In most cases, the oxygenase consists of two different subunits (alpha and beta). To assess the contributions of the alpha and beta subunits of the oxygenase to substrate specificity, hybrid dioxygenase enzymes were formed by coexpressing genes from two compatible plasmids in Escherichia coli. The activities of hybrid naphthalene and 2,4-dinitrotoluene dioxygenases containing four different beta subunits were tested with four substrates (indole, naphthalene, 2,4-dinitrotoluene, and 2-nitrotoluene). In the active hybrids, replacement of small subunits affected the rate of product formation but had no effect on the substrate range, regiospecificity, or enantiomeric purity of oxidation products with the substrates tested. These studies indicate that the small subunit of the oxygenase is essential for activity but does not play a major role in determining the specificity of these enzymes.
Outer scale of turbulence appropriate to modeling refractive-index structure profiles (1988)

The outer scale of turbulence L (0) has been calculated from values of the refractive-index structure coefficient C(2)(N) obtained from spatio-angular correlation measurements of stellar scintillation. It is found that L(0) </= 5 m for a large range of observations in France, U.S.A., and Chile and that its dependence on altitude Z follows the same general form at all these sites. The prediction of C(2)(N)(Z) profiles is shown to be feasible utilizing standard meteorological radiosonde data and this L(0)(Z) curve. A simple model based on dimensional analysis and a more complicated stochastic model are compared, but the latter appears to have no advantage.
Evaluation and Validation of a Duck IgY Antibody-based Immunoassay for High-Sensitivity C-reactive Protein: Avian Antibody Application in Clinical Diagnostics (2003)

High-sensitivity C-reactive protein (hs-CRP) is considered one of the most promising markers for cardiac risk assessment (1). A highly sensitive and interference-resistant CRP assay plays an important role in accurate CRP measurements (2)(3); therefore, manufacturers of in vitro diagnostics have begun modifying their existing CRP assays to meet the requirements. Mammalian antibodies, e.g., rabbit, mouse, and goat IgGs, are the major ones used in clinical immunoassays, but they have some drawbacks. Within the past 10 years, it has been reported that rheumatoid factor and heterophilic antibodies present in samples have caused false-positive results in CRP measurements (4)(5)(6). In addition, monoclonal antibodies for use as diagnostic and therapeutic reagents can induce human anti-mouse antibodies, which may interfere with mammalian IgGs in immunoassays, especially in the sandwich-type methods (7).

To eliminate interference without increasing costs, avian antibodies are now considered potential candidates to improve current immunoassays. One such assay, the CRPex-HS® C-Reactive Protein LIT assay (Good Biotech Corp., Taiwan), based on latex microparticle-enhanced immunoturbidimetry, has been developed and is commercially available. The CRPex-HS CRP LIT assay is intended to measure serum hs-CRP concentrations with use of a duck antibody. The duck anti-CRP IgY (ΔFc) antibody is a good substitute for traditional mammalian antibodies. The antibody, purified from egg yolks of white Pekin ducks (Anas platyrhynchos) , is coupled to polystyrene microparticles. When CRP in the serum sample encounters microparticles containing the duck anti-CRP IgY (ΔFc), it agglutinates and the turbidity is measured at 570 nm. The assay calibration range is 0–20.0 mg/L. Practical CRP measurements by the CRPex-HS CRP LIT assay are conducted on a common automated chemistry analyzer, the Hitachi 717. …
Strategies to improve the performance of very low bit rate speech coders and application to a variable rate 1.2 kb/s codec (2005)

This paper presents several strategies to improve the performance of very low bit rate speech coders and describes a speech codec that incorporates these strategies and operates at an average bit rate of 1.2 kb/s. The encoding algorithm is based on several improvements in a mixed multiband excitation (MMBE) linear predictive coding (LPC) structure. A switched-predictive vector quantiser technique that outperforms previously reported schemes is adopted to encode the LSF parameters. Spectral and sound specific low rate models are used in order to achieve high quality speech at low rates. An MMBE approach with three sub-bands is employed to encode voiced frames, while fricatives and stops modelling and synthesis techniques are used for unvoiced frames. This strategy is shown to provide good quality synthesised speech, at a bit rate of only 0.4 kb/s for unvoiced frames. To reduce coding noise and improve decoded speech, spectral envelope restoration combined with noise reduction (SERNR) postfilter is used. The contributions of the techniques described in this paper are separately assessed and then combined in the design of a low bit rate codec that is evaluated against the North American Mixed Excitation Linear Prediction (MELP) coder. The performance assessment is carried out in terms of the spectral distortion of LSF quantisation, mean opinion score (MOS), A/B comparison tests and the ITU-T P.862 perceptual evaluation of speech quality (PESQ) standard. Assessment results show that the improved methods for LSF quantisation, sound specific modelling and synthesis and the new postfiltering approach can significantly outperform previously reported techniques. Further results also indicate that a system combining the proposed improvements and operating at 1.2 kb/s, is comparable (slightly outperforming) a MELP coder operating at 2.4 kb/s. For tandem connection situations, the proposed system is clearly superior to the MELP coder.
Zero Loss Considerations in Digital Class 5 Office (1979)

This paper describes the investigation performed to select impedance matching networks required to support zero loss digital end office switching. Subjective test results showed that 8 dB of sing margin is sufficient to prevent the introduction of additional degradations over the range of echo path delays associated with digital Class 5 switching. Analysis of loop data shows that balance networks of 700ω paralleled by a 0.05 μF capacitor for non-loaded loops and 1400 ω for loaded loops will give sufficient return losses to provide the 8 dB of sing margin. In addition, these networks will give significant improvement in echo performance on DDD calls.
Letters of Benjamin Rush (1952)

Letters of Benjamin Rush. 2 vols. Edited by L. H. Butterfield. Memoirs of the American Philosophical Society, Vol. XXX, Pts. 1–2. (Princeton: Princeton University Press, 1951. lxxxvii + 1295 pp. Illustrations, appendixes, and index. $15.00.) Get access J. H. Powell J. H. Powell Philadelphia Search for other works by this author on: Oxford Academic Google Scholar Journal of American History, Volume 39, Issue 2, September 1952, Pages 325–327, https://doi.org/10.2307/1892196 Published: 01 September 1952
Fractional phase-locked loop frequency synthesizer (2003)

The fractional frequency synthesizer is similar to the divide-by-N phase-locked loop (PLL) (divider in feedback path). However, the output frequency of the voltage-controlled oscillator (VCO) is not restricted to integral multiples of the reference signal only. Rather, it can also be locked to the fractional multiples, with the result of a substantial reduction of the frequency tuning step in the useful bandwidth of the PLL without reduction of its pass band. Consequently, these frequency synthesizers have both high frequency resolution and short settling time, two essential requirements for modern applications, for example, in modern radio sets. The major difficulties are spurious signals generated in fractional divider system. In this paper, the new fractional PLL frequency synthesizer with Σ-Δ modulator is described. A complete fractional PLL was simulated, constructed and measured.
Outcome of childhood asthma in mid-adult life (1994)

A prospective 28 year follow up of 7 year old children with wheezing and asthma began in 1963 in Melbourne, Australia.1 2 We aimed to describe the outcome of childhood asthma at 35 and the changes since the last review, at 28.3

The children who were selected at 7, on the basis of parents’ responses to a questionnaire, had been classified in terms of wheeze as those who had never wheezed (controls) (n = 106); those with fewer than five episodes associated with apparent respiratory infection (mild wheezy bronchitis) (n = 75); those with five or more episodes associated with an apparent respiratory infection (wheezy bronchitis) (n = 107); and those with wheezing not associated with respiratory infection (asthma) (n = 113). A fifth group of children, with severe asthma (n = 79), was selected at age …