gebhart/patrepeval huggingface dataset:
Measurement of diversity performance of modulated scattering array antennas for mobile handsets (2007)

Array antennas have been widely studied and used for base stations because they are effective in solving the problems of multipath fading and co-channel interference and improving performance and capacity in wireless communication systems. However, little effort has been made for developing array antennas suitable for mobile handsets, because of the difficulties such as the limited space on the handset to mount an antenna array with sufficiently low spatial correlation, high cost and complexity of the printed board circuits for operating adaptive algorithm. Therefore, it is required to develop array antennas with simple configurations which are suitable for mobile handsets. The modulated scattering technique was one of the effective measurement methods for near field measurement and was applied to fast measurement of antenna radiation pattern recently. A new concept of array antennas, which is called modulated scattering array antenna (MSAA), was proposed based on the modulated scattering technique. In this research, the diversity performance of a 2-element MSAA are measured in Raleigh fading environment to demonstrate the effectiveness of the MSAA.
Does task training really affect group performance (2004)

The purpose of this paper is to examine the important relationships between task training experience and software review performance. A total of 192 subjects voluntarily participated in a laboratory experimental research and were randomly assigned into 48 four-member groups. Subjects were required to find defects from a design document. The main finding shows that task training experience has no significant effect on software review performance.
Combined PET and whole-tissue imaging of lymphatic-targeting vaccines in non-human primates (2021)

Antigen accumulation in lymph nodes (LNs) is critical for vaccine efficacy, but understanding of vaccine biodistribution in humans or large animals remains limited. Using the rhesus macaque model, we employed a combination of positron emission tomography (PET) and fluorescence imaging to characterize the whole-animal to tissue-level biodistribution of a subunit vaccine comprised of an HIV envelope trimer protein nanoparticle (trimer-NP) and lipid-conjugated CpG adjuvant (amph-CpG). Following immunization in the thigh, PET imaging revealed vaccine uptake primarily in inguinal and iliac LNs, reaching distances up to 17 cm away from the injection site. Within LNs, trimer-NPs exhibited striking accumulation on the periphery of follicular dendritic cell (FDC) networks in B cell follicles. Comparative imaging of soluble Env trimers (not presented on nanoparticles) in naïve or previously-immunized animals revealed diffuse deposition of trimer antigens in LNs following primary immunization, but concentration on FDCs in pre-immunized animals with high levels of trimer-specific IgG. These data demonstrate the capacity of nanoparticle or "albumin hitchhiking" technologies to concentrate vaccines in genitourinary tract-draining LNs, which may be valuable for promoting mucosal immunity.
Dynamic Interactive Multimedia Scenes in Mobile Broadcast Environments (2007)

Dynamic interactive multimedia scenes (DIMS) is the latest 3GPP multimedia standard aiming at the development and delivery of rich media services over mobile networks, specifically for the constrained devices. DIMS is a concept that encompasses a declarative format for audio-visual scene representation, as a composition of rich media objects with specific properties and behaviour. This paper focuses on the issues related to the delivery of Interactive TV like services with DIMS in mobile broadcast environments. We have investigated the system design parameters which would ensure better QoS for the subscribers. With the simulation results, we have setup guidelines for the selection of application layer FEC parameters, video coding settings and optimum base station transmit power. These guidelines assist in improving the overall rich media experience offered to the end-users.
Prospective head-to-head comparative phase 3 study between 18F-fluciclovine and 68Ga-PSMA-11 PET/CT in patients with early biochemical recurrence of prostate cancer. (2019)

5014 Background: This is a prospective single-center, single-arm, head-to-head phase 3 study of paired 18 F-fluciclovine (FACBC) and 68 Ga-PSMA-11 (PSMA) PET/CT scans for localizing early biochemical recurrence (BCR) of prostate cancer (PCa) after radical prostatectomy (RP) (NCT02940262). Methods: Fifty consecutive patients with BCR and prostate specific antigen (PSA) levels ranging from ≥0.2 to ≤2.0 ng/mL without any prior salvage therapy were included. All patients underwent FACBC and PSMA PET/CT scans within ≤15 days. PET/CT scans were each interpreted by 3 independent blinded expert readers not involved in study design and data acquisition. Region consensus interpretation (T,N,M1a,M1b,M1c) was generated based on majority rule in cases of reader disagreement (2 vs 1). PET/CT scans were considered as positive if any region was rated as positive. Detection rates per-patient and per-region served as primary study endpoint. Results: Median time interval between the 2 scans was 6 days (range 1-15). Median PSA level at the time of imaging was 0.50 ng/ml (mean 0.63; range 0.2-2.0 ng/ml). The detection rates were significantly lower with FACBC than with PSMA PET/CT per-patient (26% vs 56%; p = 0.003) and per-region for pelvic nodes (N) (8% vs 30%; p = 0.003) or any extra-pelvic lesions (M) (0% vs 16%; p = 0.008). Reader agreement for PSMA PET/CT image interpretations was significantly higher than for FACBC PET/CT (0.67 vs 0.20; p = 0.015). Conclusions: In patients with BCR and low serum PSA levels after RP, PSMA PET/CT demonstrates higher detection rates and superior reader agreement when compared with FACBC PET/CT. Therefore, PSMA PET/CT should be the imaging modality of choice in patients with early BCR. Clinical trial information: NCT03515577.
Polyesters, Thermoplastic (2000)

Abstract This article covers semicrystalline thermoplastic polyesters and their applications as molding resins. The principal polymers described are PET, PBT, PEN, PCT, thermoplastic elastomers of the PBT–PTMEG‐T type, and liquid crystalline polymers. The raw materials for various polyesters and their production are described and general routes to polyester polymer synthesis outlined. Individual polyesters are described in more detail with particular reference to special features of their polymer chemistry. PET stretch blow‐molded bottles and containers are a very large market and the production of PET bottle resin by continuous polymerization and solid‐state polymerization is described together with an outline of the stretch blow‐molding process. Physical properties, polymer characterization and mechanical properties together with details of polymer injection molding are described. Particular reference is given to the growing demands for PCT of new electronic and electrical fabrication techniques such as surface mounting technology and its requirements for high temperature polymer properties. PBT polymer is described in detail. Flame‐retardant additives are described and how they affect polymer performance. Safety and health factors for the polymers in use are discussed. Liquid crystal polymers are relatively new high performance thermoplastics. The nature of the mesophase state and how LCP's differ from conventional materials is described. LCP polymer synthesis is outlined and physical and mechanical properties of several commercial LCP polymers given.
Layer-by-layer stereolithography of three-dimensional antennas (2005)

Horn antennas are created using laser-based layer-by-layer stereolithography processing in which three-dimensional structures can be synthesized directly from three-dimensional CAD files. The horns are used as a simple demonstration of how to create three-dimensional objects using rapidly deposited two-dimensional layers of polymer. Two types of horns are created using the polymer fabrication and then metallized using a conductive ink seed layer. This ink can be further metallized by the use of electroplating, however, the effects are shown to be minimal due to the small current density at all locations within the horn. Two types of horn operating in Ku band are realized to test the capability of this technique to create precise features without adversely affecting the pattern and the matching to the horn. The average return loss from the horns is above 20 dB throughout the band of operation and the measured gains (10.15 dB and 14.58 dB) are accurate within 5% with respect to the simulated values.
Application of a Classical Lamination Theory Model to the Design of Piezoelectric Composite Unimorph Actuators (2006)

This work presents the design, development, and characterization of unimorphtype laminated piezoelectric actuators. The actuators consist of a piezoelectric lead zirconate titanate (PZT) layer sandwiched between unidirectional Kevlar 49 and epoxy composite layers. Differential thermal expansion during processing places the ceramic plate in a state of residual compression and results in a curved actuator. Modified classical lamination theory (MCLT) (modified to include piezoelectricity) was used to design the actuators. Three layups were fabricated and characterized: [90/PZT/90/0], [902/PZT/90/02], and [903/PZT/90/03]. Results were compared to a commercially available unimorph-type actuator made from layers of metal, adhesive, and piezoelectric material. The classical lamination theory predictions were in good agreement with the measured response of the PZT composite actuators and provide a useful design tool for these actuators.
Exploring nonlinear feature space dimension reduction and data representation in breast CADx with Laplacian eigenmaps and ‐SNE (2009)

Preliminary results appear to indicate capability for the new methods to match or exceed classification performance of current advanced breast lesion CADx algorithms. While not appropriate as a complete replacement of feature selection in CADx problems, DR techniques offer a complementary approach, which can aid elucidation of additional properties associated with the data. Specifically, the new techniques were shown to possess the added benefit of delivering sparse lower dimensional representations for visual interpretation, revealing intricate data structure of the feature space.
Removal of artifact bias from qPCR results using DNA melting curve analysis (2019)

Quantitative PCR (qPCR) allows the precise measurement of DNA concentrations and is generally considered to be straightforward and trouble free. However, analyses using validated Sybr Green I-based assays regularly amplify both the correct product and an artifact. Amplification of more than 1 product can be recognized when melting curve analysis is performed after the qPCR. Currently, such reactions need to be excluded from further analysis because the quantification result is considered meaningless. However, when the fraction of the fluorescence associated with the correct product can be determined, the quantitative result of the qPCR analysis can be corrected. The main assumptions of this correction model are: <i>1</i>) the melting peak of the correct product can be identified, <i>2</i>) the PCR efficiencies of all amplified products are similar, <i>3</i>) the relative size of the melting peaks reflects the relative concentrations of the products, and <i>4</i>) the relative concentrations do not change as the reaction reaches plateau. These assumptions were validated in a series of model experiments. The results show that the quantitative results can be corrected. Implementation of a correction for the presence of artifact amplification in the analysis of qPCR data leads to more reliable quantitative results in qPCR experiments.-Ruijter, J. M., Ruiz-Villalba, A., van den Hoff, A. J. J., Gunst, Q. D., Wittwer, C. T., van den Hoff, M. J. B. Removal of artifact bias from qPCR results using DNA melting curve analysis.
Analytical approach to optimise the efficiency of switching mode power amplifiers loaded with distributed matching networks (2011)

This study describes the design methodology of optimising the power-added efficiency (PAE) of switching mode power amplifiers (SMPAs). To maximise efficiency, design optimisation of the harmonic loading networks using an analytical analysis approach is proposed. Indeed, by carefully designing a distributed harmonic control network at the output of the SMPA, the insertion loss through the load network can be minimised. To validate the PAE optimisation approach, two 10 W inverse class F power amplifiers (PAs) were designed, manufactured and tested at a frequency of 2.45 GHz using a GaN HEMT transistor. The first PA prototype was matched with a standard distributed harmonic loading network and the second with the proposed distributed harmonic loading network. The measured PAE and gain for the second prototype were improved by 3% and 0.17 dB to reach 73% and 14 dB, respectively.
Sensitive GATA1 mutation screening reliably identifies neonates with Down syndrome at risk for myeloid leukemia (2021)

TEST 02 - Elsevier's Scopus, the largest abstract and citation database of peer-reviewed literature. Search and access research from the science, technology, medicine, social sciences and arts and humanities fields.
Estimation Accuracy and Computational Cost Analysis of Artificial Neural Networks for State of Charge Estimation in Lithium Batteries (2019)

This paper presents a tradeoff analysis in terms of accuracy and computational cost between different architectures of artificial neural networks for the State of Charge (SOC) estimation of lithium batteries in hybrid and electric vehicles. The considered layouts are partly selected from the literature on SOC estimation, and partly are novel proposals that have been demonstrated to be effective in executing estimation tasks in other engineering fields. One of the architectures, the Nonlinear Autoregressive Neural Network with Exogenous Input (NARX), is presented with an unconventional layout that exploits a preliminary routine, which allows setting of the feedback initial value to avoid estimation divergence. The presented solutions are compared in terms of estimation accuracy, duration of the training process, robustness to the noise in the current measurement, and to the inaccuracy on the initial estimation. Moreover, the algorithms are implemented on an electronic control unit in serial communication with a computer, which emulates a real vehicle, so as to compare their computational costs. The proposed unconventional NARX architecture outperforms the other solutions. The battery pack that is used to design and test the networks is a 20 kW pack for a mild hybrid electric vehicle, whilst the adopted training, validation and test datasets are obtained from the driving cycles of a real car and from standard profiles.
Non-Equiprobable Statistical Analysis of Misfires and Partial Burns for Cycle-to-Cycle Control of Combustion Variability (2018)

Cycle-to-cycle combustion variability (CV) in spark ignition internal combustion engines is amplified at high levels of exhaust gas recirculation (EGR) by sporadic partial burn and misfire events. A non-equiprobable cycle classification method, based on the magnitude of the indicated mean effective pressure (IMEP), was developed to discern and study the deterministic and stochastic components of cyclic CV. The time series analysis of experimental combustion cycles suggested that the occurrence of high energy release cycles right after misfires is the only deterministic component between consecutive cycles. This predictable behavior results from the retained air and fuel from the incomplete combustion cycle to the next. On the other hand, this study shows that the occurrence of partial burn and misfire cycles is the product of the stochastic component of cyclic CV with statistical properties similar to a multinomial probability distribution. It is demonstrated that observation of partial burns can increase the probability of observing a misfire when the conditional probability is used as the metric. Based on these findings, future work will be able to use the observation of partial burns alone to control the upper bound on the probability of misfire events. To this end, different metrics are proposed to control directly and indirectly the probability of misfires, and their advantages and disadvantages for feedback combustion control are discussed.
Quantitative test of the ab initio intrinsic laser linewidth theory (2015)

Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text A. Cerjan, A. Pick, Y. Chong, A. Rodriguez, S. Johnson, and A. D. Stone, "Quantitative test of the ab initio intrinsic laser linewidth theory," in CLEO: 2015, OSA Technical Digest (online) (Optica Publishing Group, 2015), paper FW3C.3. Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
Pseudowire Preferential Forwarding Status Bit (2013)

This document describes a mechanism for signaling the active and
standby status of redundant Pseudowires (PWs) between their
termination points. A set of Redundant PWs is configured between
Provider Edge (PE) nodes in single-segment pseudowire (SS-PW)
applications or between Terminating Provider Edge (T-PE) nodes in
Multi-Segment Pseudowire (MS-PW) applications. In order for the
PE/T-PE nodes to indicate the preferred PW to use for forwarding PW
packets to one another, a new status bit is defined. This bit
indicates a Preferential Forwarding status with a value of active or
standby for each PW in a redundant set. In addition, a second status
bit is defined to allow peer PE nodes to coordinate a switchover
operation of the PW. Finally, this document updates RFC 4447 by
adding details to the handling of the PW status code bits in the PW
Status TLV.
[Combined transgastric and transcolonic endoscopic salpingectomy: experiment with pigs]. (2008)

Combined transgastric and transcolonic approach appears safe and feasible and facilitates translumenal intraperitoneal interventions.
FlowCap: 2D Human Pose from Optical Flow (2015)

We estimate 2D human pose from video using only optical flow. The key insight is that dense optical flow can provide information about 2D body pose. Like range data, flow is largely invariant to appearance but unlike depth it can be directly computed from monocular video. We demonstrate that body parts can be detected from dense flow using the same random forest approach used by the Microsoft Kinect. Unlike range data, however, when people stop moving, there is no optical flow and they effectively disappear. To address this, our FlowCap method uses a Kalman filter to propagate body part positions and velocities over time and a regression method to predict 2D body pose from part centers. No range sensor is required and FlowCap estimates 2D human pose from monocular video sources containing human motion. Such sources include hand-held phone cameras and archival television video. We demonstrate 2D body pose estimation in a range of scenarios and show that the method works with real-time optical flow. The results suggest that optical flow shares invariances with range data that, when complemented with tracking, make it valuable for pose estimation.
Testing of Pipeline Reconfigurable Machines (1998)

Run-Time Reconfigurable (RTR) devices have recently received a great deal of attention from researchers who are looking to extend the functionality of Field Programmable Gate Arrays (FPGAs). typical commercial FPGA takes a relatively long time to reconfigure, and the entire chip’s configuration
Aromatase, a novel therapeutic target for human pancreatic, glioblastoma and lung cancer (2007)

3278 Pancreatic, glioblastoma and lung cancers are aggressive tumors with few therapeutic options resulting in poor survival of the majority of affected patients. Since estrogens and estrogen receptor signaling have been previously implicated in the growth and progression of many tumors we sought to determine the role of aromatase, the enzyme responsible for estrogen synthesis, in the above cancers. As potential radiosensitizers, we examined the effect of aromatase inhibitors (AI) in conjunction with radiation therapy (RT) in an in vitro and in vivo glioblastoma, pancreatic and non-small cell lung cancer (NSCLC) model. We hypothesized that aromatase is present and biologically active in these cancers, and that cancer cell growth can be down-regulated due to growth inhibitory and radiosensitizing effects of AIs. We examined over 50 human cancer cell lines and found high aromatase expression in NSCLC, glioblastoma and pancreatic cancer cell lines. Aromatase expression was also increased in tumor samples obtained from NSCLC patients compared to matched normal tissue. Cell lines with elevated aromatase expression showed estrogen dependence and their proliferation was decreased by >50% in cell number determinations and >80% in clonogenic assays when treated with 5 μM AI, with the strongest growth inhibitory effect of AI and radiation observed in pancreatic cancer cells. Flow cytometry analyses revealed a considerable increase in the percentage of apoptotic pancreatic cancer cells treated with AI and RT (28.7%±13.1% live cells, p
Structural Examination of the Transient 3-Aminotyrosyl Radical on the PCET Pathway of E. coli Ribonucleotide Reductase by Multifrequency EPR Spectroscopy (2009)

E. coli ribonucleotide reductase (RNR) catalyzes the conversion of nucleotides to deoxynucleotides, a process that requires long-range radical transfer over 35 A from a tyrosyl radical (Y(122)*) within the beta2 subunit to a cysteine residue (C(439)) within the alpha2 subunit. The radical transfer step is proposed to occur by proton-coupled electron transfer via a specific pathway consisting of Y(122) --> W(48) --> Y(356) in beta2, across the subunit interface to Y(731) --> Y(730) --> C(439) in alpha2. Using the suppressor tRNA/aminoacyl-tRNA synthetase (RS) methodology, 3-aminotyrosine has been incorporated into position 730 in alpha2. Incubation of this mutant with beta2, substrate, and allosteric effector resulted in loss of the Y(122)* and formation of a new radical, previously proposed to be a 3-aminotyrosyl radical (NH(2)Y*). In the current study [(15)N]- and [(14)N]-NH(2)Y(730)* have been generated in H(2)O and D(2)O and characterized by continuous wave 9 GHz EPR and pulsed EPR spectroscopies at 9, 94, and 180 GHz. The data give insight into the electronic and molecular structure of NH(2)Y(730)*. The g tensor (g(x) = 2.0052, g(y) = 2.0042, g(z) = 2.0022), the orientation of the beta-protons, the hybridization of the amine nitrogen, and the orientation of the amino protons relative to the plane of the aromatic ring were determined. The hyperfine coupling constants and geometry of the NH(2) moiety are consistent with an intramolecular hydrogen bond within NH(2)Y(730)*. This analysis is an essential first step in using the detailed structure of NH(2)Y(730)* to formulate a model for a PCET mechanism within alpha2 and for use of NH(2)Y in other systems where transient Y*s participate in catalysis.
Lumped element-based, highly sub-wavelength, negative index metamaterials at UHF frequencies (2008)

Several lumped element-based epsilon-negative (ENG), mu-negative (MNG), and double-negative (DNG) metamaterial designs have been developed for operation at 400 MHz in the UHF frequency band. The use of lumped elements enabled the creation of highly sub-wavelength unit cells whose overall size was λ0/d∼75 at 400 MHz. The measured negative index material (NIM) showed an effective real index of refraction nreal=−3.11 with a total loss that was less than 1 dB/cm. The NIM bandwidth was &amp;gt;10% in the neighborhood of 400 MHz.