gebhart/patrepeval huggingface dataset:
Digital Predistortion Based on QRD-RLS Algorithm and Its Implementation Using FPGA (2009)

To reduce the nonlinear distortion caused by RF power amplifier (PA) in wireless transmission system, digital predistortion is widely used for PA linearization. This paper mainly discusses on the memory polynomial predistortion based on QRD-RLS algorithm, which is analyzed in the MATLAB simulation. It is also discussed about the Systolic implementation of complex QRD-RLS algorithm based on CORDIC technique. At last, with System Generator, the system of digital predistortion based on QRD-RLS algorithm is designed on FPGA, and the system is verified in hardware platform.
Fault detection in fossil electric power plant via neural networks (2004)

In this paper, the authors discuss fault detection for fossil electric power plants. It is intended to use recurrent neural networks to perform such a detection. A sceme for fault detection is proposed. This scheme is based on comparison bctween thc measures coming from the plant and thc predicted values generatcd by a neural network model. This research is in its beginning: right now a full scale simulator is being uscd to generate the required data base.
A new control plane for 5G network architecture with a case study on unified handoff, mobility, and routing management (2014)

The tremendous growth in wireless Internet use is showing no signs of slowing down. Existing cellular networks are starting to be insufficient in meeting this demand, in part due to their inflexible and expensive equipment as well as complex and non-agile control plane. Softwaredefined networking is emerging as a natural solution for next generation cellular networks as it enables further network function virtualization opportunities and network programmability. In this article, we advocate an all-SDN network architecture with hierarchical network control capabilities to allow for different grades of performance and complexity in offering core network services and provide service differentiation for 5G systems. As a showcase of this architecture, we introduce a unified approach to mobility, handoff, and routing management and offer connectivity management as a service (CMaaS). CMaaS is offered to application developers and over-the-top service providers to provide a range of options in protecting their flows against subscriber mobility at different price levels.
Use of Chromogenic Peptide Substrates in the Determination of Clotting Factors II, VII, IX and X in Normal Plasma and in Plasma of Patients Treated with Oral Anticoagulants (1982)

Spectrophotometric methods were used to assay the clotting factors II, VII, IX and X in plasma of 33 subjectively healthy human donors and in plasma of 98 patients receiving long-term oral anticoagulant therapy. In 33 normal subjects the interindividual variations in the plasma activities of the clotting factors II, VII, IX and X are respectively 12.2, 21.4, 11.0 and 15.0%. After correction for the assay variations the remaining biological variations are respectively 11.7, 21.2, 9.7 and 14.8%. Plasma from 98 patients receiving long-term anticoagulant therapy was assayed with 'Thrombotest', a clotting test in whole blood introduced by Owren and in these plasmas the activity of each of the vitamin K-dependent factors was assayed with spectrophotometric methods. For the clotting factors IX and VII, novel spectrophotometric methods were applied and the plasma activities thus measured were compared to results obtained with factor IX and VII clotting assays. Chromogenic activities of the different factors were correlated among each other and with 1/Thrombotest values. When the therapeutic range for Thrombotest values is set between 5 and 12.5% the corresponding therapeutic ranges for the activity of the factors II, VII, IX and X are respectively 12.6-36.1, 27.0-52.3, 23.1-49.3 and 18.9-36.2% (expressed as a percentage of the activity in normal pool plasma). The chromogenic assays for the factors II, VII, IX and X provide the same information on the therapeutic state of the patients in respectively 86.7, 78.6, 81.6 and 89.8% of the cases. Finally we discuss the suitability of the different assays to monitor oral anticoagulant therapy.
Radiation efficiency, correlation, diversity gain and capacity of a six-monopole antenna array for a MIMO system: theory, simulation and measurement in reverberation chamber (2005)

A six-monopole circular antenna array for use in a MIMO system is considered. The authors show how to calculate the embedded element patterns, both by classical analytical modeling and by the method of moments. Thereafter, these are used to calculate the radiation efficiency of each embedded element, correlation and diversity gain, as well as the maximum average capacity of the MIMO system when the array is located in a rich scattering environment. The theoretical value for the capacity is obtained by numerically distributing many plane wave sources statistically uniformly over 4π, letting them illuminate the calculated embedded element pattern and using Shannon's capacity formula on the received wave amplitudes. The calculated results are compared with measurement in a reverberation chamber, representing a similar scattering environment. The agreement is good.
Enzymatic Ability of <i>Bifidobacterium animalis</i> subsp. <i>lactis</i> To Hydrolyze Milk Proteins: Identification and Characterization of Endopeptidase O (2005)

The proteolytic system of Bifidobacterium animalis subsp. lactis was analyzed, and an intracellular endopeptidase (PepO) was identified and characterized. This work reports the first complete cloning, purification, and characterization of a proteolytic enzyme in Bifidobacterium spp. Aminopeptidase activities (general aminopeptidases, proline iminopeptidase, X-prolyl dipeptidylaminopeptidase) found in cell extracts of B. animalis subsp. lactis were higher for cells that had been grown in a milk-based medium than for those grown in MRS. A high specific proline iminopeptidase activity was observed in B. animalis subsp. lactis. Whole cells and cell wall-bound protein fractions showed no caseinolytic activity; however, the combined action of intracellular proteolytic enzymes could hydrolyze casein fractions rapidly. The endopeptidase activity of B. animalis subsp. lactis was examined in more detail, and the gene encoding an endopeptidase O in B. animalis subsp. lactis was cloned and overexpressed in Escherichia coli. The deduced amino acid sequence for B. animalis subsp. lactis PepO indicated that it is a member of the M13 peptidase family of zinc metallopeptidases and displays 67.4% sequence homology with the predicted PepO protein from Bifidobacterium longum. The recombinant enzyme was shown to be a 74-kDa monomer. Activity of B. animalis subsp. lactis PepO was found with oligopeptide substrates of at least 5 amino acid residues, such as met-enkephalin, and with larger substrates, such as the 23-amino-acid peptide alpha s1-casein(f1-23). The predominant peptide bond cleaved by B. animalis subsp. lactis PepO was on the N-terminal side of phenylalanine residues. The enzyme also showed a post-proline secondary cleavage site.
Heat treatment of semi-insulating InP:Fe with phosphosilicate glass encapsulation (1984)

Photoluminescence and Raman scattering characterization measurements were performed on semi-insulating InP:Fe (100) samples heat treated with phosphosilicate glass (PSG) protective layers. Photoluminescence spectra of PSG encapsulated InP samples indicated that native phosphorus vacancies were reduced in these samples following heat treatment. The presence of a TO phonon line in Raman spectra, which is related to a modification of structual bonding, was observed in InP samples heat treated with an SiO2 layer, while the absence of this TO phonon line was observed in InP heat treated with the PSG layer. Activation of Si implanted into the InP:Fe samples increased with increasing phosphorus concentration in the PSG layers which were used as protective layers for the post ion-implantation annealing.
The Association Between Elevated EphB4 Expression, Smoking Status, and Advanced-Stage Disease in Patients With Head and Neck Squamous Cell Carcinoma (2006)

Overexpression of EphB4 is associated with advanced stages of HNSCC as well as with patients who smoke. These data are the first to demonstrate the association of EphB4 with advanced stages of disease and smoking in HNSCC and hence provide a strong rationale for targeting EphB4 for HNSCC therapies.
Adaptive angular sampling approach for emission tomography (2010)

This paper presents an adaptive angular sampling approach developed for SPECT systems that require the rotation of the detection system to obtain an adequate angular sampling. The basic idea of the approach is to assign different imaging times across possible sampling angles, based on the efficiency of the camera(s) at each possible angle for collecting imaging information. In this study, we used the resolution-variance tradeoffs and bias-variance tradeoffs as performance indices for guiding the adaptive angular sampling strategy, and applied a highly efficient computation scheme, based on the non-uniform object-space pixilation methods, for deriving the optimum time distribution in near real-time. This approach allows an optimum efficiency for collecting imaging information and therefore offers an improved image quality.
Metallic photonic crystals (2002)

Metallic photonic crystals (PC), also originally called artificial dielectrics, have properties different from those of their dielectric homologues. They are of strategic interest for the microwave domain where they exhibit sufficiently weak loss in addition to their robustness, conformability and low-cost fabrication. In this paper, we review some recent results on metallic photonic crystals and their potential applications to microwave circuits and antennas. After recalling spectral properties of metallic PC, we successively address ultra-compact structures such as high-impedance surfaces, electrically controllable photonic band gaps and left-handed materials. Finally, we discuss new opportunities offered by metallic PCs in the optical domain.
Multivariate visualization in observation-based testing (2000)

We explore the use of multivariate visualization techniques to support a new approach to test data selection, called observation-based testing. Applications of multivariate visualization are described, including: evaluating and improving synthetic tests; filtering regression test suites; filtering captured operational executions; comparing test suites; and assessing bug reports. These applications are illustrated by the use of correspondence analysis to analyze test inputs for the GNU GCC compiler.
Active ingredient consistency of commercially available glucosamine sulfate products. (2002)

If GLS is used as a therapeutic agent, it is important that the products conform to a standard in their description. The content is probably best expressed in terms of free base.
xSim: The extreme-scale simulator (2011)

Investigating parallel application performance at scale is an important part of high-performance computing (UPC) application development. The Extreme-scale Simulator (xSim) is a performance toolkit that permits running an application in a controlled environment at extreme scale without the need for a respective extreme-scale HPC system. Using a lightweight parallel discrete event simulation, xSim executes a parallel application with a virtual wall clock time, such that performance data can be extracted based on a processor and a network model. This paper presents significant enhancements to the xSim toolkit that provide a more complete Message Passing Interface (MPI) support and improve its versatility. These enhancements include full virtual MPI group, communicator and collective communication support, and global variables support. The new capabilities are demonstrated by executing the entire NAS Parallel Benchmark suite in a simulated HPC environment.
Sensitivity and kinetics of mouse rod flash responses determined <i>in vivo</i> from paired‐flash electroretinograms (1999)

1. Electroretinograms (ERGs) were recorded corneally from C57BL/6J mice using a paired-flash procedure in which a brief test flash at time zero was followed at time tprobe by a bright probe flash of fixed strength, and in which the probe response amplitude was determined at time t = tprobe + 6 ms. Probe responses obtained in a series of paired-flash trials were analysed to derive A(t), a family of amplitudes that putatively represents the massed response of the rod photoreceptors to the test flash. A central aim was to obtain a mathematical description of the normalized derived response A(t)/Amo as a function of Itest, the test flash strength. 2. With fixed tprobe (80 <= tprobe <= 1200 ms), A(t)/Amo was described by the saturating exponential function [1 - exp(-ktItest)], where kt is a time-dependent sensitivity parameter. For t = 86 ms, a time near the peak of A(t), k86 was 7.0 +/- 1.2 (scotopic cd s m-2)-1 (mean +/- s. d.; n = 4). 3. A(t)/Amo data were analysed in relation to the equation below, a time-generalized form of the above exponential function in which (k86Itest) is replaced by the product [k86Itestu(t)], and where u(t) is independent of the test flash strength. The function u(t) was modelled as the product of a scaling factor gamma, an activation term 1 - exp[-alpha(t - td)2]), and a decay term exp(-t/tauomega): A(t)/Amo = 1 - exp[-k86Itestu(t)]; u(t) = gamma(1 - exp[-alpha(t - td)2](exp(-t/tauomega) where td is a brief delay, tauomega is an exponential time constant, and alpha characterizes the acceleration of the activation term. For Itest up to approximately 2.57 scotopic cd s m-2, the overall time course of A(t) was well described by the above equation with gamma = 2.21, td = 3.1 ms, tauomega = 132 ms and alpha = 2.32 x 10-4 ms-2. An approximate halving of alpha improved the fit of the above equation to ERG a-wave and A(t)/Amo data obtained at t about 0-20 ms. 4. Kinetic and sensitivity properties of A(t) suggest that it approximates the in vivo massed photocurrent response of the rods to a test flash, and imply that u(t) in the above equation is the approximate kinetic description of a unit, i.e. single photon, response.
Orthodontic/Orthopedic Treatment of Craniomandibular Pain Dysfunction, Part 4: Unilateral and Bilateral Crossbite (1985)

Crossbites are commonly cited as etiological factors in craniomandibular dysfunction problems. A proposed sequence of events summarizing the phenomenon is as follows: (1) maxillary constriction leads to (2) a transverse dental discrepancy, which leads to (3) a lateral mandibular shift to accommodate the dental problem. The lateral mandibular shift often leads to a unilateral crossbite and a unilateral posterior condylar displacement on the ipsilateral side. The treatment indicated may be to equilibrate, providing for a “wide centric” so that the mandible may center itself with bilaterally concentric condyles. More often than not, however, orthodontics is indicated because the overall correction is beyond an equilibration alone. Bilateral crossbites usually do not lead to lateral mandibular shifts, but occasionally they do. Whenever there is a lateral mandibular shift (not to be confused with the Bennett movement), then either a posterior or an anterior condylar displacement (or both) is inevitable. Orthodontic/orthopedic procedures should be designed to correct the skeletal and dental crossbite and the condylar displacements at the same time.
Fiber optic Ethernet transceiver for Joint STARS block I GSM (2002)

The authors discuss the use of FiberCom's DPT dual redundant counter-rotating ring Ethernet transceiver, and its use as an integral part of the Joint STARS (Surveillance Target Attack Radar System) surface-to-air battlefield information station called the ground station module (GSM). The Ethernet transceiver uses a dual counter-rotating fiber ring architecture. The operation of the unit enables the network to have fault-tolerant capability with no single point of failure. This results from the unit's ability to reconfigure around a network failure, creating a new working segment from the remaining portion. The medium attachment unit interface conforms to ANSI/IEEE Std. 802.3-1985, the IEEE Standard for Local Area Networks-Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Access Method and Physical Layer Specifications.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
A Polyester Forming a Thermotropic Cholesteric Phase (1981)

Abstract Mesomorphic polyesters were synthesized from 4, 4′-dihydroxy-α-methylstilbene and adipic acid (P-6) or (+)-3-methyl adipic acid (P-6M). P-6 forms a thermotropic nematic phase and P6-M a thermotropic cholesteric phase. The nematic phase of P-6 could easily be identified by optical microscopy. For both polymers we observed a biphasic region in which the isotropic and liquid crystalline phases coexist. Bright colors were obtained by increasing the pitch of P6-M by admixture with either a low molecular weight nematogen or with polymer P-6, and also by synthesizing a copolymer containing the two dibasic acids. The copolymeric cholesteric phase, which is stable between 199 and 282[ddot]C, had a predominately planar texture, and these features could be retained in the solid state by quenching to produce a film having a deep blue color at room temperature. The role of the degree of polymerization upon the development of organization, and parameters, of the mesophase is discussed.
Hydrogel/poly-dimethylsiloxane hybrid bioreactor facilitating 3D cell culturing (2013)

The authors present a hydrogel/poly-dimethylsiloxane (PDMS) hybrid bioreactor. The bioreactor enables a low shear stress 3D culture by integrating a hydrogel as a barrier into a PDMS casing. The use of PDMS allows the reversible adhesion of the device to a commercially available microelectrode array. A two-step molding process facilitates this relatively simple, cost effective, and leakage-free add-on microculture system. Agarose (2%) is used as hydrogel barrier material and mass transport is evaluated by fluorescein isothiocyanate-albumin fluorescence under static conditions which yields a diffusion coefficient of average value of 2.2 × 10-7 cm 2 s-1 across the barrier. To validate our bioreactor for diffusion limited 3D cell culture, rat cortical cells were successfully cultured in Matrigel for 6 days. © 2013 American Vacuum Society.
System-level interfaces and performance evaluation methodology for 5G physical layer based on non-orthogonal waveforms (2013)

5GNOW is a European collaborative research project questioning the design targets of LTE and LTE-Advanced, in particular the obedience to strict synchronism and orthogonality. By introducing new waveforms, the project fosters a re-design of physical and partially MAC layer to support heterogeneous traffic (high rate, sporadic access, carrier aggregation). For system level performance evaluations of the non-orthogonal waveforms (together with key radio resource management algorithms) an abstract view of the physical layer with analytical models going beyond standard OFDM performance evaluation (e.g. due to additional dependencies between resource blocks) is needed. In this paper, elements of a system level simulation platform are developed, which provide necessary abstractions and sufficient accuracy to capture the essential physical layer behavior at a reasonable computational complexity.
Genistein depletes telomerase activity through cross‐talk between genetic and epigenetic mechanisms (2009)

Genistein, a natural isoflavone found in soybean products, has been reported to down-regulate telomerase activity and that this prevents cancer and contributes to the apoptosis of cancer cells. However, the precise molecular mechanism by which genistein represses telomerase is not clear. Here, we show that genistein inhibits the transcription of hTERT (human telomerase reverse transcriptase), the catalytic subunit of the human telomerase enzyme, in breast MCF10AT benign cells and MCF-7 cancer cells in a time- and dose-dependent manner. Three major DNA methyltransferases (DNMT1, 3a and 3b) were also decreased in genistein-treated breast cancer cells suggesting that genistein may repress hTERT by impacting epigenetic pathways. Sequential depletion of the hTERT promoter revealed that the hTERT core promoter region is responsible for the genistein-induced repression of hTERT transcription. Using a newly developed technique of chromatin immunoprecipitation (ChIP)-related bifulfite sequencing analysis, we found an increased binding of E2F-1 to the hTERT promoter is due to the site-specific hypomethylation of the E2F-1 recognition site. In addition, we found that genistein can remodel chromatin structures of the hTERT promoter by increasing trimethyl-H3K9 but decreasing dimethyl-H3K4 in the hTERT promoter. The repression of hTERT was enhanced by combination with genistein and the DNMT inhibitor, 5-aza-2'-deoxycytidine (5-aza-dCyd). These findings collectively show that genistein is working, at least in part, through epigenetic mechanisms of telomerase inhibition in breast benign and cancer cells and may facilitate approaches to breast cancer prevention and treatment using an epigenetic modulator combined with genistein.
In vitro affinity of 99Tcm-labelled N2S2 conjugates of chrysamine G for amyloid deposits of systemic amyloidosis (2001)

To date, systemic amyloidosis is diagnosed histologically in vitro using Congo red staining or in vivo using iodine-123 serum amyloid P component (123I-SAP) scintigraphy. 99Tcm-labelled derivatives of chrysamine G (CG), a lipophilic analogue of Congo red, were synthesized as potential tracer agents for direct and quantitative scintigraphic evaluation of amyloid deposits. To determine the affinity of 99Tcm-MAMA-CG, 99Tcm-Me4MAMA-CG and 99Tcm-MAMA-CG diethyl ester for amyloid, in vitro autoradiography was performed on sections of human kidney biopsy cylinders from kidneys with amyloid deposits (types AA, Alambda and Akappa) or control kidney tissue after incubation with the respective tracer agents. The binding of 99Tcm-MAMA-CG and its tetramethyl derivative was higher to kidney biopsy material with amyloid deposits of the AA, Alambda or Akappa type compared with control kidney tissue. This higher binding was prevented by the presence of 10 microM Congo red in the incubation medium. The diethyl ester of 9Tcm-MAMA-CG did not demonstrate increased binding to Congo red-positive kidney tissue. In conclusion, 99Tcm-MAMA-CG and 99Tcm-Me4MAMA-CG localize specifically to amyloid deposits in human kidney tissue, suggesting that these tracer agents may be applicable as specific targeting agents for diagnostic purposes in clinical amyloidosis.