gebhart/patrepeval huggingface dataset:
An implementation-friendly synchronization algorithm for multimedia HDTV receivers (2009)

To support high definition television (HDTV), the revision of DVB-T, the terrestrial digital video broadcasting standard, has recently been developed under the abbreviation DVB-T2. The provision of the anticipated high data rate services requires a highly accurate synchronization and frequency acquisition and tracking. Setting out from the procedure defined by the DVB-T2 implementation guidelines provided by the DVB-T2 standardization community, the authors have developed a modified, thus novel and yet implementation-friendly synchronization algorithm which is proposed in this manuscript. Simulation results show a promising performance improvement for synchronization, frequency offset estimation as well as the detection of the signaling information contained in the preamble P1.
A Possible Subunit Structure of Rous Sarcoma Virus RNA (1969)

Microbiology Society journals contain high-quality research papers and topical review articles. We are a not-for-profit publisher and we support and invest in the microbiology community, to the benefit of everyone. This supports our principal goal to develop, expand and strengthen the networks available to our members so that they can generate new knowledge about microbes and ensure that it is shared with other communities.
Low Level Infrared Radiometer Comparison Measurements (1986)

Comparison measurements of low level infrared radiation at 1064 nm wavelength of the modified Rj-7000 series radiometer (hereafter termed MRj), custom manufactured by Laser Precision Corporation, were performed with the NBS P-3 low level pulsed laser radiometer constructed at the National Bureau of Standards, Boulder, Colorado. A brief description of these instruments and measurement data are reported in this paper. This is considered of interest for those engaged in the design of radiometers or associated with low level monochromatic performance measurements used with laser ranging and designating systems and test sets. Due to time constraints, interest was focused on the practical lower limit signal-to-noise measurement capability of the MRj radiometer. Data obtained indicate that this radiometer, which is essentially the conventional model specially fitted with an aperture wheel, a reflex mirror, and telescope assembly featuring a 10 cm diameter collecting lens, has a practical lower limit measurement capability of approximately 10 fJ/cm2. This is essentially a few orders of magnitude greater in sensitivity than the conventional, unmodified version, and is in agreement with the theoretical gain obtained using a lens of this size. These results were obtained by comparing the MRj measurements with those utilizing a conventional Laser Precision radiometer without the telescope assembly, in the region of 10-12 J/cm2 and the NBS P-3 in the range of 10-13 J/cm2 to 10-16 J/cm2. A nominal 1064 nm wavelength laser simulator LED was placed at the focal point of a 12.7 cm diameter lens of 60 cm focal length to provide a collimated source of approximately 15 ns FWHM pulse length with a PRR of 30 Hz. It was also noted that the LED output power decreased with increasing pulse repetition rate which was correlated with NBS P-3 radiometer observations between 30 Hz and 125 kHz.
Acid-catalyzed reactions of N-arylhydroxylamines and related compounds with benzene. Iminium-benzenium ions (1981)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAcid-catalyzed reactions of N-arylhydroxylamines and related compounds with benzene. Iminium-benzenium ionsKoichi Shudo, Toshiharu Ohta, and Toshihiko OkamotoCite this: J. Am. Chem. Soc. 1981, 103, 3, 645–653Publication Date (Print):February 1, 1981Publication History Published online1 May 2002Published inissue 1 February 1981https://pubs.acs.org/doi/10.1021/ja00393a025https://doi.org/10.1021/ja00393a025research-articleACS PublicationsRequest reuse permissionsArticle Views603Altmetric-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
Optimal server assignment in multi-server queueing systems with random connectivities (2019)

In this paper, we provide complementary results on delay-optimal server allocation in multi-queue multi-server (MQMS) systems with random connectivities. More specifically, we consider an MQMS system where each queue is limited to get service by at most one server during each time slot. It is known that maximum weighted matching (MWM) is a throughput-optimal server assignment policy for such a system. In this paper, using dynamic coupling argument we prove that for a system with i.i.d. Bernoulli arrivals and connectivities, MWM minimizes, in stochastic ordering sense, a range of cost functions of the queue lengths such as total queue occupancy (which implies minimization of average queueing delay). Finally, we propose a low complexity heuristic server assignment policy for MQMS systems namely least connected server first/longest connected queue (LCSF/LCQ) and through simulations we show that it performs very closely compared with the optimal policy in terms of average queueing delay.
Optical and thermal charge-transfer processes occurring in a series of three-centered, cyanide-bridged intervalent charge-transfer complexes (1992)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOptical and thermal charge-transfer processes occurring in a series of three-centered, cyanide-bridged intervalent charge-transfer complexesBrian W. Pfennig and Andrew B. BocarslyCite this: J. Phys. Chem. 1992, 96, 1, 226–233Publication Date (Print):January 1, 1992Publication History Published online1 May 2002Published inissue 1 January 1992https://pubs.acs.org/doi/10.1021/j100180a044https://doi.org/10.1021/j100180a044research-articleACS PublicationsRequest reuse permissionsArticle Views336Altmetric-Citations41LEARN 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 options Get e-Alerts
Anisotropy of Fracture Toughness of Stabilized Zirconia Investigated by Nano-Identation Method (2017)

Nano-indentation tests with a Vickers-type diamond tip were carried out on the {100} surface of a single crystal of 10 mol% yttria-stabilized zirconia (10YSZ), (Y2O3)0.1(ZrO2)0.9. By changing the contact angle of the indentation tip against the single crystal sample, the fracture toughness of 10YSZ was investigated as a function of the crystal orientation from <100> to <110> on the {100} surface. It was empirically shown that the fracture toughness of 10YSZ is anisotropic. The fracture toughness of 10YSZ was lowest in the direction of <100> among investigated orientations. This result suggests that mechanical failures in 10YSZ may occur preferentially along the direction of <100>.
On the Scalability of Connectivity Services in a Multi-Operator Orchestrator Sandbox (2018)

The paper investigates the performance of a multi-domain orchestrator (MdO) deployed in a real multi-domain European testbed. Results show how the MdO prototype scales well with the number of domains advertised and connectivity services provisioned.
Flow graph balancing for minimizing the required memory bandwidth (2002)

In this paper we present the problem of flow graph balancing for minimizing the required memory bandwidth. Our goal is to minimize the required memory bandwidth within the given cycle budget by adding ordering constraints to the flow graph. This allows the subsequent memory allocation and assignment tasks to come up with a cheaper memory architecture with less memories and memory ports. The effect of flow graph balancing is shown on an example. We show that it is important to take into account which data is being accessed in parallel, instead of only considering the number of simultaneous memory accesses. This leads to the optimization of a conflict graph.
Solvent effect on the tautomerism of 4-aminopyrazino[2,3-c][1,2,6]thiadiazine 2,2-dioxides (1998)

A detailed study of the tautomerism of 4-amino-1H-pyrazino[2,3-c][1,2,6]thiadiazine 2,2-dioxide has been carried out using different theoretical methods. Semiempirical, molecular orbital and density functional theory based ab initio methods have been used to study all the possible tautomers of this compound in the gas phase. Several continuum solvation models have been used to estimate the relative stability of the tautomers in water. Complexes with one and two molecules of water have been considered to take into account the specific solute–solvent interactions. Finally, these results have been compared with UV spectrophotometry data, giving good agreement between theoretical and experimental results in aqueous solution.
Performance characterization of a low-power magnetically shielded Hall thruster with an internally-mounted hollow cathode (2019)

Abstract Magnetically shielded miniature (MaSMi) is a low power (≤1 kW) long life (&gt;100 kg Xe throughput) magnetically shielded Hall thruster that features an internally mounted hollow cathode. The development model MaSMi Hall thruster was designed, fabricated, and tested in preparation for advancement into an engineering model design. The MaSMi - DM uses an ultra-compact internally-mounted heaterless hollow cathode, which has previously demonstrated stable operation over a discharge current range of 0.5–4 A. More than 100 heaterless ignitions were performed during this test campaign, revealing consistent and predictable start-up behavior. Component testing of a novel anode manifold used in the MaSMi-DM demonstrated peak-to-peak azimuthal propellant flow distribution variations of less than 3.2% across three flow rates and two anodes. Current–voltage-magnetic field testing of the MaSMi-DM was completed over a discharge voltage range of 200–600 V, a discharge current range of 0.5–4.0 A, and a discharge power range of 150–1000 W. The MaSMi - DM demonstrated the highest total efficiency and highest total specific impulse of any sub-kW Hall thruster to date. Performance highlights include a peak thrust of 68.6 mN, a peak total specific impulse of 1940 s at 1000 W with &gt;1500 s available above 500 W, and a peak total efficiency of 54.2% at 1000 W with &gt;40% available above 300 W. Visual observations of the plasma discharge, carbon-coated discharge channel walls post-operation, and the results from plasma simulations provided strong evidence of magnetic shielding and the projected &gt;100 kg Xe throughput capability of the thruster.
Impact of Strain on ESD Robustness of FinFET Devices (2008)

The ESD performance of gated FinFET diodes and multi-gate NMOS devices in both active MOS-diode and parasitic-bipolar mode are investigated, highlighting the impact of strained SiN layers. Strain improves the ESD robustness up to 30% in multi-fin FinFETs. A different failure mechanism is discovered in strained NMOS FinFETs for the parasitic-bipolar mode.
Directional control of infrared antenna-coupled tunnel diodes (2010)

Directional control of received infrared radiation is demonstrated with a phased-array antenna connected by a coplanar strip transmission line to a metal-oxide-metal (MOM) tunnel diode. We implement a MOM diode to ensure that the measured response originates from the interference of infrared antenna currents at specific locations in the array. The reception angle of the antenna is altered by shifting the diode position along the transmission line connecting the antenna elements. By fabricating the devices on a quarter wave dielectric layer above a ground plane, narrow beam widths of 35° FWHM in power and reception angles of ± 50° are achieved with minimal side lobe contributions. Measured radiation patterns at 10.6 μm are substantiated by electromagnetic simulations as well as an analytic interference model.
Particle analogs of electrons in colloidal crystals (2019)

A versatile method for the design of colloidal crystals involves the use of DNA as a particle-directing ligand. With such systems, DNA-nanoparticle conjugates are considered programmable atom equivalents (PAEs), and design rules have been devised to engineer crystallization outcomes. This work shows that when reduced in size and DNA grafting density, PAEs behave as electron equivalents (EEs), roaming through and stabilizing the lattices defined by larger PAEs, as electrons do in metals in the classical picture. This discovery defines a new property of colloidal crystals-metallicity-that is characterized by the extent of EE delocalization and diffusion. As the number of strands increases or the temperature decreases, the EEs localize, which is structurally reminiscent of a metal-insulator transition. Colloidal crystal metallicity, therefore, provides new routes to metallic, intermetallic, and compound phases.
On the performance of CoMP transmission in unsynchronized networks with timing offset (2014)

Coordinated Multipoint (CoMP) transmission is a promising technology in 4G Long Term Evolution (LTE) systems to enable coverage and high data rates for cell edge User Equipments (UEs). However, the presence of Timing Offset (TO) between the received signals from multiple transmitters at the UE could prove prohibitive for CoMP transmission. Such TO affects the estimation of the transmit covariance matrix for Pre-coding Matrix Index (PMI) selection significantly. Especially, the promised advantages of closed-loop CoMP transmission vanishes and it performs even worse than the open-loop in presence of a large TO due to the improper PMI selection. With analytical and numerical results we show that keeping the TO small, the promised advantages of closed-loop CoMP transmission can be guaranteed and as a result near optimum performance is achieved for CoMP transmission in unsynchronized networks with TO present.
Concerted expansion and contraction of immune receptor gene repertoires in plant genomes (2022)

Recent reports suggest that cell-surface and intracellular immune receptors function synergistically to activate robust defence against pathogens, but whether they co-evolve is unclear. Here we determined the numbers of cell-surface and intracellular immune receptors in 350 species. Surprisingly, the number of receptor genes that are predicted to encode cell-surface and intracellular immune receptors is strongly correlated. We suggest this is consistent with mutual potentiation of immunity initiated by cell-surface and intracellular receptors being reflected in the concerted co-evolution of the size of their repertoires across plant species.
EDW S{sub n} differencing compared to Monte Carlo for zero-c problems (1999)

The purpose herein is to demonstrate that in the case of very low or no scattering, ray effects in an S{sub n} calculations can be virtually eliminated by using a course spatial mesh with an accurate, exponential-based differencing scheme. Further, we demonstrate that in considering the computational cost and the amount of information provided, the S{sub n} method with the exponential directional weighted (EDW) scheme is a superior technique for this problem.
TEM Observation of Microstructure in Silicon Nitride Ceramics Containing Y<sub>2</sub>O<sub>3</sub>-Nd<sub>2</sub>O<sub>3</sub> Additive (1998)

The microstructure in silicon nitride ceramics containing Y2O3-Nd2O3 additive sintered at 2473K under 30MPa in N2 was investigated by transmission electron microscopy (TEM). TEM analysis suggested that the second phase existed in silicon nitride grains, and this structure was similar to β-Si3N4 structure. EDX analysis suggested that the second phase consisted of Y, Nd, Si, O, and N elements.
Evaluation of the Spatial Consistency Feature in the 3GPP GSCM Channel Model (2018)

Since the development of 4G networks, Multiple-Input Multiple-Output (MIMO) and later multiple-user MIMO became a mature part to increase the spectral efficiency of mobile communication networks. An essential part of simultaneous multiple-user communication is the grouping of users with complementing channel properties. With the introduction of Base Station (BS) with large amount of antenna ports, i.e. transceiver units, the focus in spatial precoding is moved from uniform to heterogeneous cell coverage with changing traffic demands throughout the cell and 3D beamforming. In order to deal with the increasing feedback requirement for Frequency-Division Duplex (FDD) systems, concepts for user clustering on second order statistics are suggested in both the scientific and standardization literature. Former 3rd Generation Partnership Project (3GPP) Geometry-based Stochastic Channel Model (GSCM) channel models lack the required spatial correlation of small-scale fading. Since the latest release of 3GPP Geometry-based Stochastic Channel Model this issue is claimed to be solved and hence our contribution is an evaluation of this spatial consistency feature.
Immunocytochemical Evidence that Suckling Inhibits the Postovariectomy Depletion of Median Eminence Luteinizing Hormone Releasing Hormone (1982)

Suckling has been demonstrated to impair the release of pituitary luteinizing hormone (LH) and to prevent the dramatic increase in plasma LH observed following ovariectomy. In the present study, the effect of suckling (10 pups/animal) for either 1 or 3 weeks on the relative amount of luteinizing hormone releasing hormone (LHRH) present in the hypothalamus and preoptic area of ovariectomized and intact rats was examined using immunocytochemical methodology. Controls consisted of nonlactating animals which were either intact (diestrous) or ovariectomized for 1 or 3 weeks. Brains were removed following transcardial perfusion of phosphate-buffered formalin and Bouin's fixative. After dehydration, clearing and paraffin embedding, the brains were sectioned and LHRH localized by an indirect immunoperoxidase technique. A positive reaction denoting the presence of immunoreactive LHRH was observed over axons and termini throughout the rostral to caudal extent of the median eminence (ME) and surrounding the organum vasculosum of the lamina terminalis (OVLT) in the preoptic area. Ovariectomy resulted in a progressive decline in the concentration of LHRH within the ME as evidenced by a reduction in the intensity of the staining reaction and in the number of axons over which the reaction was observed. In contrast, brains from ovariectomized rats which had been suckled appeared to have concentrations of LHRH in the ME equal to or greater than that of the diestrous controls. Similarly, the concentrations of LHRH In the ME of intact, suckled rats did not differ significantly from that of the diestrous controls. Neither ovariectomy nor suckling produced any observable change in the relative concentration of LHRH located near the OVLT. These data demonstrate that suckling prevents the depletion of LHRH from the ME following ovariectomy and provide evidence for mechanism by which the suckling stimulus may suppress plasma LH.
Correcting lithography hot spots during physical-design implementation (2006)

As the technology node shrinks, printed-wafer shapes show progressively less similarity to the design-layout shapes, even with optical proximity correction (OPC). Design tools have a restricted ability to address this shape infidelity. Their understanding of lithography effects is limited, taking the form of design rules that try to prevent "Hot Spots" - locations that demonstrate wafer-printing problems. These design rules are becoming increasingly complex and therefore less useful in addressing the lithography challenges. Therefore, design tools that have a better understanding of lithography are becoming a necessity for technology nodes of 65 nm and below. The general goal of this work is to correct lithography Hot Spots during physical-design implementation. The specific goal is to automatically fix a majority of the Hot Spots in the Metal 2 layers and above, with a run time on the order of a few hours per layer. Three steps were taken to achieve this goal. First, Hot Spot detection was made faster by using rule-based detection. Second, Hot Spot correction was automated by using rule-based correction. Third, convergence of corrections was avoided by performing correction locally, which means that correcting one Hot Spot was very unlikely to create new Hot Spots.
ChemInform Abstract: Synthesis of Unnatural Lipophilic N‐(9H‐Fluoren‐9‐ylmethoxy)carbonyl‐ Substituted α‐Amino Acids and Their Incorporation into Cylic RGD‐ Peptides: A Structure‐Activity Study. (1997)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Faculty Opinions recommendation of Impact of stereospecific intramolecular hydrogen bonding on cell permeability and physicochemical properties. (2014)

Profiling of eight stereoisomeric T. cruzi growth inhibitors revealed vastly different in vitro properties such as solubility, lipophilicity, pKa, and cell permeability for two sets of four stereoisomers. Using computational chemistry and NMR spectroscopy, we identified the formation of an intramolecular NH→NR3 hydrogen bond in the set of stereoisomers displaying lower solubility, higher lipophilicity, and higher cell permeability. The intramolecular hydrogen bond resulted in a significant pKa difference that accounts for the other structure-property relationships. Application of this knowledge could be of particular value to maintain the delicate balance of size, solubility, and lipophilicity required for cell penetration and oral administration for chemical probes or therapeutics with properties at, or beyond, Lipinski's rule of 5. PMID: 24524242 Funding information This work was supported by: NIGMS NIH HHS, United States Grant ID: P50 GM069721