gebhart/patrepeval huggingface dataset:
Rate-Splitting Multiple Access for Multigateway Multibeam Satellite Systems with Feeder Link Interference (2021)

This paper studies the precoder design problem of achieving max-min fairness (MMF) amongst users in multigateway multibeam satellite communication systems with feeder link interference. We propose a beamforming strategy based on a newly introduced transmission scheme known as rate-splitting multiple access (RSMA). RSMA relies on multi-antenna rate-splitting at the transmitter and successive interference cancellation (SIC) at the receivers, such that the intended message for a user is split into a common part and a private part and the interference is partially decoded and partially treated as noise. In this paper, we formulate the MMF problem subject to per-antenna power constraints at the satellite for the system with imperfect channel state information at the transmitter (CSIT). We also consider the case of two-stage precoding which is assisted by on-board processing (OBP) at the satellite. Numerical results obtained through simulations for RSMA and the conventional linear precoding method are compared. When RSMA is used, MMF rate gain is promised and this gain increases when OBP is used. RSMA is proven to be promising for multigateway multibeam satellite systems whereby there are various practical challenges such as feeder link interference, CSIT uncertainty, per-antenna power constraints, uneven user distribution per beam and frame-based processing.
Obtaining calibrated probability estimates from decision trees and naive Bayesian classifiers (2001)

Accurate, well-calibrated estimates of class membership probabilities are needed in many supervised learning applications, in particular when a cost-sensitive decision must be made about examples with example-dependent costs. This paper presents simple but successful methods for obtaining calibrated probability estimates from decision tree and naive Bayesian classifiers. Using the large and challenging KDD&amp;apos;98 contest dataset as a testbed, we report the results of a detailed experimental comparison of ten methods, according to four evaluation measures. We conclude that binning succeeds in significantly improving naive Bayesian probability estimates, while for improving decision tree probability estimates, we recommend smoothing by -estimation and a new variant of pruning that we call curtailment.
The HLA–DRB1 shared epitope alleles differ in the interaction with smoking and predisposition to antibodies to cyclic citrullinated peptide (2007)

The HLA-DRB1 SE subtypes differ in their interaction with smoking and in their predisposition to anti-CCP antibodies. TE contributes to the development of RA in SE+, anti-CCP+ patients, which is explained by its effect on the level of anti-CCP antibodies.
The effects of jingsongling, a xylazine analog, on mean arterial blood pressure and heart rate in dogs — influences of yohimbine, tolazoline, prazosin, and atropine (1989)

The effects of jingsongling (JSL) and xylazine on heart rate (HR) and mean arterial pressure (MAP) were studied in five conscious male dogs. An i.v. injection of xylazine (1 mg/kg) caused a bradycardia, an initial hypertension, and a subsequent hypotension. An i.v. injection of JSL (1 mg/kg) caused a bradycardia and a 20-min hypertension without a subsequent hypotension. Atropine sulfate (45 micrograms/kg, i.v.) increased HR for 30 min without changing MAP, and antagonized JSL-induced bradycardia for at least 60 min. There was a subsequent rebound bradycardia. Atropine sulfate potentiated JSL-induced hypertension in both magnitude and duration. Yohimbine (0.1 mg/kg, i.v.), an alpha 2-adrenoceptor antagonist, increased HR and MAP for 110 and 70 min, respectively. Yohimbine not only failed to potentiate but even reversed the pressor effect of JSL in a dose-dependent manner. Yohimbine also caused a dose-dependent reversal of JSL-induced bradycardia. Tolazoline (5 mg/kg, i.v.), a nonselective alpha-adrenoceptor antagonist, increased MAP for 20 min without changing HR. Tolazoline also reversed JSL-induced hypertension and bradycardia. Prazosin (1 mg/kg), an alpha 1-adrenoceptor antagonist, decreased MAP and increased HR for at least 110 min. Prazosin reversed JSL-induced hypertension but failed to affect JSL-induced bradycardia. These results indicated that: (1) JSL-induced bradycardia and hypertension are mediated by alpha 2-adrenoceptors; (2) yohimbine and tolazoline may be useful in antagonizing these untoward reactions associated with JSL administration, whereas prazosin and atropine were not found to be beneficial in this regard.
Experimental Evaluation of the Thermal Performance of a Water Shield for a Surface Power Reactor (2024)

A water based shielding system is being investigated for use on initial lunar surface power systems. The use of water may lower overall cost (as compared to development cost for other materials) and simplify operations in the setup and handling. The thermal hydraulic performance of the shield is of significant interest. The mechanism for transferring heat through the shield is natural convection. Natural convection in a representative lunar surface reactor shield design is evaluated at various power levels in the Water Shield Testbed (WST) at the NASA Marshall Space Flight Center. The experimental data from the WST is used to anchor a CFD model. Performance of a water shield on the lunar surface is then predicted by CFD models anchored to test data. The accompanying viewgraph presentation includes the following topics: 1) Testbed Configuration; 2) Core Heater Placement and Instrumentation; 3) Thermocouple Placement; 4) Core Thermocouple Placement; 5) Outer Tank Thermocouple Placement; 6) Integrated Testbed; 7) Methodology; 8) Experimental Results: Core Temperatures; 9) Experimental Results; Outer Tank Temperatures; 10) CFD Modeling; 11) CFD Model: Anchored to Experimental Results (1-g); 12) CFD MOdel: Prediction for 1/6-g; and 13) CFD Model: Comparison of 1-g to 1/6-g.
High-speed low-temperature-grown GaAs p-i-n traveling-wave photodetector (1998)

We report a novel type of p-i-n traveling-wave photodetector utilizing low-temperature-grown GaAs (LTG-GaAs). The devices show a record impulse response time (530-fs fullwidth at half-maximum, /spl sim/560 GHz -3-dB bandwidth) which agrees with theoretical estimates. The effects of various limiting factors on the device performance were analyzed theoretically and compared with measurements obtained by electrooptic characterization of our devices. Calculations indicate that the device speed is dominated by the short carrier lifetime. DC external quantum efficiencies as high as 8% were obtained.
Effects of Aging on Moisture-Enhanced Pork Loins (2004)

Injection of fresh pork loins with a salt/phosphate/ lactate brine to achieve moisture-enhanced quality improvement did not affect troponin-T proteolysis and postmortem enzymatic tenderization.Consequently, the time of injection post-slaughter is not a critical factor influencing the tenderness of moisture-enhanced pork.Purge, however, was reduced by aging and greater desmin proteolysis was observed.Thus, aging prior to injection may reduce purge from moisture-enhanced pork.
Frequency comb-based multidimensional coherent spectroscopy (2019)

We present multidimensional coherent spectroscopy that utilizes frequency combs and multi-heterodyne detection. We demonstrate its capability to measure collective hyperfine resonances in atomic vapor induced by long-range dipole-dipole interactions.
Condensation of long-chain .alpha.-phosphono carboxylates with aldehydes (1986)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCondensation of long-chain .alpha.-phosphono carboxylates with aldehydesJames A. Marshall, Bradley S. DeHoff, and Darryl G. ClearyCite this: J. Org. Chem. 1986, 51, 10, 1735–1741Publication Date (Print):May 1, 1986Publication History Published online1 May 2002Published inissue 1 May 1986https://pubs.acs.org/doi/10.1021/jo00360a019https://doi.org/10.1021/jo00360a019research-articleACS PublicationsRequest reuse permissionsArticle Views534Altmetric-Citations39LEARN 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-Alertsclose Get e-Alerts
Graphene on SiC as a Q-switcher for a 2 μm laser (2012)

Double-layer graphene epitaxially grown on silicon carbide was used to Q-switch a Tm:YAG laser. Stable Q-switched laser pulses at the central wavelength of 2.01 μm were obtained. The maximum average output power, pulse repetition rate, and single pulse energy were 38 mW, 27.9 kHz, and 1.74 μJ, respectively. Our results illustrate that graphene can be used as a saturable absorber at the 2 μm region.
Intraoral repair of fractured ceramics: a literature review (2022)

<b>Background:</b> Fracture or chipping of veneering ceramic resulting in aesthetic and functional issues is a frequent technical complication encountered with fixed dental prostheses. Treatment options include extraoral or intraoral repair of the ceramic restoration; the latter being minimally invasive and cost-effective. We reviewed the various intraoral repair techniques for ceramic fractures and their efficiency in the last decade. <b>Methods:</b> A literature search was carried out between 2017 and 2022 using the PubMed database with keywords: intraoral, repair, ceramics, porcelain, and 'porcelain fused to metal'. Screening of abstracts and full texts was carried out to determine the final list of eligible studies. <b>Results:</b> Twenty-one eligible studies were included in the review which consisted of 17 in vitro studies, three case reports, and one prospective clinical study. Researchers and dentists preferred repairing cracked veneered zirconia-based restorations intraorally if the restoration is in acceptable condition. However, successful intraoral repair of veneering fractures relies on the bond between the previous restoration and the new repair material, the right adhesive resin, and adequate surface conditioning. The review indicated that the best technique to fix chipping in a complex made of zirconia core and veneering ceramic is to treat the veneering ceramic with hydrofluoric acid before covering the core ceramic with silica. <b>Conclusion:</b> Intraoral repair is an efficient and economic procedure without the need for repeated sessions. However, the success and longevity of the restoration rely on the technical skills of the clinicians and adherence to prescribed protocols.
Overcharge Protection for High Voltage Lithium Cells Using Two Electroactive Polymers (2006)

A bilayer conducting polymer composite separator provides overcharge protection for high voltage rechargeable lithium batteries. The polymer with the higher oxidation potential is placed in contact with the cathode and sets the overcharge protection limit, while the lower voltage polymer completes the reversible shunt and protects the high voltage polymer from degradation due to instability at the anode potential. The passage of an oxidation front through such a polymer bilayer was visualized using a transparent thin-film cell, and the approach was successfully used for internal protection of cells and external protection of cells.
Structures of three photochromic compounds and three non-photochromic derivatives; the effect of methyl substituents (1991)

C 21 H 19 N 3 O(I) cristallise dans P2 1 /n avec a=10,999, b=14,983, c=21,351 A, β=97,259°, Z=8; affinement jusqu'a R=0,064. C 22 H 21 -N 3 O(II) cristallise dans P2 1 /c avec a=7,3093, b=22,3464, c=10,9473 A, β=94,848°, Z=4; affinement jusqu'a R=0,043. C 22 H 21 N 3 O 2 (III) cristallise dans P2 1 /n avec a=11,5201, b=10,7143, c=16,0914 A, β=108,075°, Z=4; affinement jusqu'a R=0,061. C 23 H 23 N 3 O 2 (IV) cristallise dans P2 1 /n avec a=9,9249, b=16,7437, c=24,0188 A, β=100,299°, Z=8; affinement jusqu'a R=0,062. C 19 H 18 N 2 O 3 (V) cristallise dans P2 1 /n avec a=16,146, b=10,979, c=19,728 A, β=105,826°, Z=8; affinement jusqu'a R=0,054. C 20 H 20 N 2 O 3 (VI) cristallise dans Pbcn avec a=12,923, b=12,605, c=21,234 A, Z=8, affinement jusqu'a R=0,047
Complete resection and untethering of the cervical and thoracic spinal dermal sinus tracts in adult patients. (2020)

Dermal sinus tracts (DSTs) of the cervical and thoracic spine are extremely rare, particularly in adult patients because diagnosis is typically made in the early stage after birth by pediatricians. These cases should be treated surgically as soon as possible to prevent neurological sequelae. This report describes two rare adult cases with cervical and thoracic spine DSTs. The first patient presented with back pain and headache, whose skin lesion had been long known, but disregarded since birth. The second patient had long suffered from residual cervical myelopathy from the prior incomplete surgical treatment. Both cases had these sinus tracts excised completely and had spinal cord untethered successfully without any neurological deterioration. There has been a trend toward earlier diagnosis of these entities, but still some cases that were diagnosed in a delayed fashion or underwent incomplete treatment are reported. Improper management during childhood could lead to irreversible neurological deficit caused by spinal cord tethering and/or direct compression due to DSTs-associated tumors. The early detection and prompt surgical intervention improve the chance of a good surgical outcome. Furthermore, complete excision of the sinus tracts and associated tumors could help prevent future bacterial contamination and recurrence.
Simulation of Steam Explosion Premixing Phase Using Probabilistic Multiphase Flow Equations (1995)

Violent interactions of two adjacent fluids with different material properties have been investigated. The first stage of this interaction, called premixing, was of particular interest. The idea of probabilistic multiphase equations suggested by Molodtsof and Muzyka (1989) was utilized and compared to results of experiment MIXA06.
Laser-induced electric breakdown in water (1991)

Dielectric breakdown induced in water by Nd: YAG laser pulses is considered experimentally and theoretically. The effect appears to be due to electron avalanche ionization. The aspects of this process considered here are the following: (i) The dependence of the breakdown probability on the laser field. At high fields, electron interaction with molecular (Raman) vibrations or with collective molecular motions occurs. (ii) Bragg scattering, which contributes to keeping the electron motion in phase with the optical field. (iii) The role of the electron mobility, which contributes to stabilizing the process. (iv) The generation of the electrons that start the avalanche in relation to different laser-pulse durations and irradiances.
Performance Validation of a UV Reactor for High and Low Dose Applications (2009)

Performance Validation of a UV Reactor for High and Low Dose ApplicationsThe Siemens Barrier Sunlight V-48E-A300 was validated in conformance with a recently developed test protocol that combines and updates the objectives and methods found in established UV disinfection guidance documents, including the NWRI/AwwaRF protocol (2003), the UVDGM (2006), and the USEPA-ETV protocol (2002). The UV disinfection system was tested at full-scale at a single power input, adjusted...Author(s)Chengyue ShenKarl ScheibleBertrand DussertJames DonnellanSourceProceedings of the Water Environment FederationSubjectSession 3 - UV DesignDocument typeConference PaperPublisherWater Environment FederationPrint publication date Jan, 2009ISSN1938-6478SICI1938-6478(20090101)2009:1L.134;1-DOI10.2175/193864709793848310Volume / Issue2009 / 1Content sourceDisinfection and Reuse SymposiumFirst / last page(s)134 - 144Copyright2009Word count321Subject keywordsBiodosimetryREDRED biasUltravioletUVUVDGMUV sensitivityvalidation
Acquired loss of chromatic sensitivity (2009)

Abstract Purpose A range of ophthalmic and neurological conditions cause diminished visual performance, even when the subject is often unaware of any problems and the loss of vision remains undetected in conventional perimetry and visual acuity tests. The extent to which detection of acquired colour vision loss can revealed in subclinical cases and distinguished from congenital loss has been investigated. Methods Over 400 subjects with congenital and acquired colour vision loss have been examined using conventional colour screening methods. In addition, the loss of yellow / blue and red / green chromatic sensitivity has been quantified using the CAD test (http://www.caa.co.uk/docs/33/200904.pdf). Those investigated included subjects with diseases of the retina and / or the optic nerve as well as patients with selective damage to central visual pathways. Patients with various stages of glaucoma, photoreceptor dystrophies, diabetes, optic neuritis, age‐related macular degeneration as well as tobacco and alcohol toxicity have been examined. Results Algorithms developed for analysis of colour vision loss and automatic classification of congenital and / or acquired colour deficiency will be described. In acquired deficiency, the loss of chromatic sensitivity tends to affect both the rg and the yb channels. Significant differential effects have, however, been observed in relation to stimulus size, retinal location and state of light adaptation. Conclusion The findings from these studies show that in the majority of these conditions, the loss of chromatic sensitivity is the most sensitive measure of early changes in diseases of the eye.
Thermoelectric effects in electrochemical systems (1995)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermoelectric effects in electrochemical systemsJohn NewmanCite this: Ind. Eng. Chem. Res. 1995, 34, 10, 3208–3216Publication Date (Print):October 1, 1995Publication History Published online1 May 2002Published inissue 1 October 1995https://pubs.acs.org/doi/10.1021/ie00037a005https://doi.org/10.1021/ie00037a005research-articleACS PublicationsRequest reuse permissionsArticle Views1177Altmetric-Citations44LEARN 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-Alertsclose Get e-Alerts
Full characterization of a highly multimode entangled state embedded in an optical frequency comb using pulse shaping (2014)

An in-depth analysis of the correlation and entanglement properties of an optical frequency comb produced by a synchronously pumped optical parametric oscillator is presented, providing a unique capability for the continued development of specialized quantum networks within highly multimode structures.
TimberWolf3.2 (1986)

TimberWolf3.2 is a new standard cell placement and global routing package. The placement and global routing proceed over 3 distinct stages. The general combinatorial optimization technique known as simulated annealing is used during the first two stages of the placement. In the first stage, TimberWolf3.2 places the cells such that the total estimated interconnect cost is minimized. During the second stage, TimberWolf3.2 inserts feed through cells as required and the minimization of the total estimated interconnect cost proceeds again in the manner of simulated annealing. The second stage comes to a close following a global routing step, in which the number of wiring tracks needed is accurately estimated. During the third and final stage, local changes are made to the placement whenever such changes result in a reduction in the number of wiring tracks required. TimberWolf3.2 has achieved area savings ranging from 15 to 75% in experiments on numerous industrial circuits.
Human-Centered Navigation and Person-Following with Omnidirectional Robot for Indoor Assistance and Monitoring (2022)

Robot assistants and service robots are rapidly spreading out as cutting-edge automation solutions to support people in their everyday life in workplaces, health centers, and domestic environments. Moreover, the COVID-19 pandemic drastically increased the need for service technology to help medical personnel in critical conditions in hospitals and domestic scenarios. The first requirement for an assistive robot is to navigate and follow the user in dynamic environments in complete autonomy. However, these advanced multitask behaviors require flexible mobility of the platform to accurately avoid obstacles in cluttered spaces while tracking the user. This paper presents a novel human-centered navigation system that successfully combines a real-time visual perception system with the mobility advantages provided by an omnidirectional robotic platform to precisely adjust the robot orientation and monitor a person while navigating. Our extensive experimentation conducted in a representative indoor scenario demonstrates that our solution offers efficient and safe motion planning for person-following and, more generally, for human-centered navigation tasks.
Joint estimation of Doppler and time-difference-of-arrival exploiting cyclostationary property (2002)

For the problem of estimating the time-difference-of-arrival (TDOA) of radio waves impinging on one or a pair of antennas for the purpose of actively or passively locating the source of a communications or telemetry signal in the presence of interfering signals and noise, W. A. Gardner has developed some effective methods, such as CCCC and SPECCOA etc. However, it is shown that CCCC, SPECCOA and related methods do not apply to moving targets because the Doppler shift changes the cycle frequencies of the signal of interest. Two new methods based on the cyclic cross-ambiguity (CCA) function and the spectrally cyclic cross-ambiguity (SCCA) function are introduced in the paper for the joint TDOA and Doppler estimation, and their consistency in estimating the TDOA and Doppler is also discussed. Practical experiments, utilising FM radio signals emitting from a remote FM transmitter to detect the planes and estimate the values of TDOA and Doppler, have been carried out. Experimental results demonstrate the efficiency of the CCA and SCCA methods in the estimation of TDOA and Doppler.