gebhart/patrepeval huggingface dataset:
A greedy approach for mmWave hybrid precoding with subarray architectures (2017)

We consider a point-to-point mmWave link with hybrid digital-analog transceivers, where the analog stage is realized with a network of phase shifters. Moreover, we concentrate on a case particularly relevant from the practical perspective. Namely, we constrain the analog stage such that disjoint antenna subarrays are processed separately in the analog domain. In this work, a novel precoding and combining strategy is developed. In order to exploit the inherent modularity of the analog stage in the subarray architectures, we separate the design of the digital and analog processing and concentrate on the latter. Namely, for the design of the analog stage we propose a subspace-arrangement based greedy algorithm.
Heterokaryotic Compatibility in Streptomyces (1959)

SUMMARY: The compatibility system in Streptomyces fradiae may be characterized as follows. When 108 conidia of each of two freshly isolated auxotrophic mutants are mated on minimal medium, a small number, usually 1 to 10, of ‘primary’ heterokaryotic colonies appear (low-frequency mating, LFM). On the other hand, when ‘secondary parental isolates’ (derived from the conidia produced by ‘primary’ heterokaryons) are mated, the frequency of heterokaryon formation is increased by a factor of several thousand. This high-frequency mating (HFM) is a reasonably stable property, decreasing (or increasing) in a stochastic manner, only after a considerable number of subcultures. A mutational origin is therefore postulated for the HFM and LFM isolates, which must be endowed with variable cultural fitness causing diverse population shifts upon subculture. More effective anastomosis, not increase in residual growth of the ‘secondary parental isolates’, appears to be responsible for HFM. No interspecific crosses were successful, even when an HFM tester stock was used, but heterokaryotic interaction between independently isolated auxotrophic mutants derived from the same line of S. fradiae seemed to increase when an HFM strain was one of the partners.
Combined endo and epicardial substrate ablation (scar dechanneling) in arrhythmogenic cardiomyopathy: a prospective multicenter study (2013)

Background: Ventricular tachycardia (VT) ablation in patients with arrhythmogenic cardiomyopathy (AC) has a high rate of recurrence. Recent studies suggest that a more extensive epicardial arrhythmogenic substrate could explain these results. We report the results of combined endocardial and epicardial susbtrate VT ablation (using the "scar dechanneling technique") in patients with AC.
A review of conflict detection and resolution modeling methods (2000)

A number of methods have been proposed to automate air traffic conflict detection and resolution (CDR), but there has been little cohesive discussion or comparative evaluation of approaches. The paper presents a survey of 68 CDR modeling methods, several of which are currently in use or under operational evaluation. A framework that articulates the basic functions of CDR is used to categorize the models. The taxonomy includes: dimensions of state information (vertical, horizontal, or three-dimensional, 3-D); method of dynamic state propagation (nominal, worst case, or probabilistic); conflict detection threshold; conflict resolution method (prescribed, optimized, force field, or manual); maneuvering dimensions (speed change, lateral, vertical, or combined manoeuvres); and management of multiple aircraft conflicts (pairwise or global). An overview of important considerations for these and other CDR functions is provided, and the current system design process is critiqued.
Use of Mycobacterial Interspersed Repetitive Unit-Variable-Number Tandem Repeat Typing To Examine Genetic Diversity of<i>Mycobacterium tuberculosis</i>in Singapore (2004)

Strain typing using variable-number tandem repeats of mycobacterial interspersed repetitive units (MIRU-VNTR) is a powerful tool for studying the epidemiology and genetic relationships of Mycobacterium tuberculosis isolates. For this study, isolates from 291 patients in Singapore were genotyped by this method. One hundred sixty-six distinct MIRU-VNTR patterns were detected. One hundred sixty-two strains were grouped into 1 of 35 different MIRU-VNTR clusters and 131 isolates were unique. In this sample collection, 9 of the 12 MIRU-VNTR loci were moderately or highly discriminative according to their allelic diversities. The Hunter-Gaston discriminatory index was 0.975, indicating the high power of discrimination of MIRU-VNTR typing. By direct comparisons with previously typed MIRU-VNTR patterns and by genetic relationship analyses, we could identify and clearly define four epidemic groups of M. tuberculosis in our sample, corresponding to the W/Beijing, East-Africa-Indian, Haarlem, and Delhi genotype families. Furthermore, MIRU-VNTR typing was able to clearly distinguish ancestral and modern M. tuberculosis strains as defined by TbD1 genomic deletion analysis. These results indicate that MIRU-VNTR typing can be a useful first-line tool for studying the genetic diversity of M. tuberculosis isolates in a large urban setting such as Singapore.
How expensive are electric vehicles? A total cost of ownership analysis. (2013)

This paper presents a total cost of ownership (TCO) model for three different car segments. The goal is to investigate the cost efficiency of electric vehicles compared to conventional vehicles. All costs that occur during the expected vehicle’s lifespan are included: purchase cost, registration tax, vehicle road tax, maintenance, tires and technical control cost, insurance cost, battery leasing cost, battery replacement cost and fuel or electricity cost. Results are shown per vehicle segment and illustrate the share of all cost components. We find that current electric vehicles are only cost attractive within the premium car segment.
Failure Of Aircraft Components Under Crash-Type Loads (1993)

Report presents information generated and published during transport- and composite-aircraft-components phases of impact-dynamics research programs at NASA Langley Research Center.
Barrier function of lymph node to tumor cells and erythrocytes.II. Effect of x-ray, inflammation, sensitization and tumor growth (1967)

The present study was carried out to evaluate the effects of alteration of nodes upon their filtering capacity for tumor cells and erythrocytes. Local irradiation and inflammation, but not diphtheria-typhoid-pertussis (DTP) sensitization, significantly reduced the barrier function of nodes to erythrocytes. These modalities failed to influence the deficient barrier function of lymph nodes to tumor cell dissemination. The results also re-emphasize previous conclusions that information in this regard obtained from the study of erythrocytes is not applicable to tumor cells. Properties of the tumor cells per se, rather than biological and mechanical functions of the lymph nodes appear most significant concerning the fate of such cells in these structures. The failure of either local or distant tumor growth to influence the histologic appearance or filtering capacity of lymph nodes for tumor cells suggests a lack of biological responsiveness of such structures to tumor.
Das inhaltliche Spektrum (1994)

Mit der Politik geht es wie mit der Zeit: Man weiß, was das ist, aber je mehr man darüber nachdenkt, desto schwieriger wird eine klare Erklärung oder gar eine eindeutige Definition. So geht es mir nicht nur mit der Politik, sondern auch mit der Politikwissenschaft. Statt sie abstrakt zu definieren, will ich versuchen, ihre Kernbereiche zu porträtieren. Aber welche Bereiche gehören zu diesem Kern? Wie soll man sie übersichtlich und erschöpfend aufteilen? Wie war es früher doch noch so bequem. In den Anfängen der Politikwissenschaft nach dem zweiten Weltkrieg wurde das Fach schlicht in drei Bereiche eingeteilt:
A Study of the Sintering Behaviour of Ni-Ti Powder Compacts Using Differential Scanning Calorimetry (2008)

A primary purpose of the present work was to develop an experimental technique using Differential Scanning Calorimetry (DSC) capable of elucidating phase formation during sintering of a 50 atomic percent Ni and 50 atomic percent Ti powder compact in order to increase the understanding of the sintering mechanisms that take place during solid state and reactive sintering. Using a variety of Nickel and Titanium powder sizes, effects due to powder size, peak temperature and hold time were studied in situ using DSC, which allowed for a number of qualitative and quantitative relationships to be developed.\n\nIn studying the eutectoid decomposition of β-Ti using DSC, a simple model was developed (Eq. 4-7) to relate the measured enthalpy of this reaction to the area fraction observed microstructurally. This allowed for the determination of the standard enthalpy for the β-Ti eutectoid decomposition, which was found to be ΔHf = 64.8 J/g. This value, coupled with the measured eutectoid enthalpy, allowed for the determination of the weight fraction of β-Ti present as a function of hold time at 900°C. It was found that the β-Ti removal followed a two-stage parabolic decay. The rate constant for stage I was found to be kI = -0.0347 fβ/(mins)^1/2 and that for stage II, kII = - 0.0123 fβ/(mins)^1/2.\n\nA relationship between the enthalpy observed for the combustion reaction versus the fraction of β-Ti present at the time of combustion was also developed (Eq. 4-15). This represents the first published evidence that combustion actually depends on the β-Ti content, which in turn precipitates a melting event significant enough to initiate combustion.
Polarographic method for the determination of propanedial (malonaldehyde) (1980)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolarographic method for the determination of propanedial (malonaldehyde)A. M. Bond, P. P. Deprez, R. D. Jones, G. G. Wallace, and M. H. BriggsCite this: Anal. Chem. 1980, 52, 13, 2211–2213Publication Date (Print):November 1, 1980Publication History Published online1 May 2002Published inissue 1 November 1980https://pubs.acs.org/doi/10.1021/ac50063a050https://doi.org/10.1021/ac50063a050research-articleACS PublicationsRequest reuse permissionsArticle Views234Altmetric-Citations10LEARN 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
Intramolecular Directional Energy Transfer Processes in Dendrimers Containing Perylene and Terrylene Chromophores (2002)

The time-resolved fluorescence kinetics of a first and a second generation dendrimer with peryleneimide chromophores at the rim and a terrylenediimide chromophore in the core were investigated using femtosecond fluorescence upconversion and single photon timing techniques. By global analysis of an extentensive data set with λem ranging from 540 to 780 nm, combining both techniques and comparing the kinetic results obtained previously for peryleneimide and terrylenediimide reference compounds, two independent energy transfer processes could be identified. The time constants were 4 and 25 ps for the first generation dendrimer and 22 and 68 ps for the second generation, respectively. They scale as expected for Förster energy transfer processes between chromophores at the distances present in the dendrimers. Each of these processes can possibly be related to different isomers present in the samples. Analysis of the in-the-bay area substituted terrylenediimide model compound reveals subsets of molecules showing different relaxation pathways of the terrylene core.
Comparison of forwarding strategies in internet connected MANETs (2004)

For efficient Internet Connectivity in MANETs, multiple gateways and potentially multi-homing and hand-over need to be supported. We compare two forwarding strategies; default routes and tunneling to gateways. We find that tunneling is more efficient and flexible compared to default routes. In fact, we show that default routes will not operate correctly in some situations, particularly in multi-homed networks with more than one gateway.
Genetic, functional, and histopathological evaluation of two C-terminal BRCA1 missense variants (2005)

A comprehensive range of genetic, bioinformatic, and functional analyses have been combined for the characterisation of BRCA1 unclassified sequence variants. Consistent with the functional analyses, the combined odds of causality calculated for the 1706A variant after multifactorial likelihood analysis (1:142) indicates a definitive classification of this variant as "benign". In contrast, functional assays of the 1708E variant indicate that it is pathogenic, possibly through subcellular mislocalisation. However, the combined odds of 262:1 in favour of causality of this variant does not meet the minimal ratio of 1000:1 for classification as pathogenic, and A1708E remains formally designated as unclassified. Our findings highlight the importance of comprehensive genetic information, together with detailed functional analysis for the definitive categorisation of unclassified sequence variants. This combination of analyses may have direct application to the characterisation of other unclassified variants in BRCA1 and BRCA2.
A gyro-medium filled beam waveguide (1968)

Quasi-confocal modes for a gyro-medium filled beam waveguide are derived. The axis of beam propagation is taken coincident with the gyro-axis of the medium. The modes are found to be circularly polarized with dispersion characteristics similar to circularly polarized plane waves propagating along the gyro-axis of the medium. The addition of such a medium can thus introduce propagation cutoffs and resonances previously not present in the beam waveguide. The characteristic beam diameter and the phase correction necessary to maintain a mode are found to depend on the circular polarization of the mode. The example of a lossless gyro-plasma medium is discussed.
ConSeq (2011)

Concurrency bugs are caused by non-deterministic interleavings between shared memory accesses. Their effects propagate through data and control dependences until they cause software to crash, hang, produce incorrect output, etc. The lifecycle of a bug thus consists of three phases: (1) triggering, (2) propagation, and (3) failure.
Fracture and Fatigue Failure Behavior of Fluoroelastomers (1996)

Fluoroelastomers (FEs) are a class of elastomers with very high chemical resistance and wide service temperature which are being used in chemically harsh environments. In the present work, the fatigue failure characteristics of FEs have been studied. Fatigue Crack Propagation (FCP) experiments were conducted on single edge notch (SEN) specimens in displacement control. The strain range was kept constant at about 14% with a frequency of 0.5 Hz. FCP data such as, the number of cycles, crack length, and hysteresis loop, were recorded in order to correlate the crack speed to the energy release rate. In addition, the static behavior of the material has been examined in view of both notched and un-notched specimens. Post failure analysis was performed on the fractured samples using Scanning Electron Microscopy (SEM). The fractographic features associated with different FCP stages were identified. As the FCP speed increased, the roughness of the fracture surface decreased. Multiple cracks and fracture lines, at different fracture planes, are associated with the fatigue failure. The intersection of those fracture lines form fracture islands which are characteristic to FE fracture morphology under fatigue loading. On a microscopic level, the fracture surface exhibits microcracks and microvoids with evidence of void coalescence. The fracture surfaces of both un-notched and notched samples tested under monotonic tensile loading were also examined and compared with those tested under fatigue loading. The origin and features of fracture initiation and propagation for the monotonic type of failure have been identified.
Stability of filled poly(dimethylsiloxane) and poly(diphenylsiloxane-co-dimethylsiloxane) elastomers to cyclic stress at elevated temperature (1996)

The response of aluminum oxide-filled poly(dimethyl siloxane) and poly(diphenylsiloxane-co-dimethylsiloxane) elastomers, containing 3–24 mol % diphenylsiloxane, to cyclic stress at elevated temperatures (dynamic creep) was evaluated. The materials could be divided into two classes, based on their response to the application of cyclic stress: no or low-diphenylsiloxane content elastomers in which substantial creep and a decrease in crosslink density were observed, and high diphenylsiloxane content (16–24 mol %) elastomers that showed decreased creep with increasing diphenylsiloxane content and an increase in crosslink density. It was suggested that the phenyl groups stabilize the siloxane bond in the polymer backbone, decreasing the rate of chain scission reactions as the diphenylsiloxane content increases and stabilizing the elastomer against creep. The balance of chain scission, chemical crosslinking, and cyclic formation reactions varies depending on diphenylsiloxane content, giving rise to the differences in dynamic creep behavior. An activation energy of 12.9 kcal/mol was measured for dynamic creep of poly(16% diphenylsiloxane/84% dimethyl siloxane), suggesting that a catalyzed degradation mechanism was responsible. The primary catalysts of the degradation reactions are postulated to be the filler particles. © 1996 John Wiley & Sons, Inc.
Preparation of an Electrically Heated Wire Catalyst for Cold-Start-Exhaust (1996)

Abstract Three way catalysts were dispersed over the surface of an anodized Ti wire in order to promptly eliminate hydrocarbons remained in cold-start-exhaust gas from an automobile engine. The anodized wire was heated up to 623 K or higher in 30 sec simply to loading 13 V to the ends of the wire, which resulted is abatement of 50% hydrocarbons in the cold-start-exhausts within 30 sec just after an engine ignition.
Module for Oxygenating Water without Generating Bubbles (2004)

A module that dissolves oxygen in water at concentrations approaching saturation, without generating bubbles of oxygen gas, has been developed as a prototype of improved oxygenators for water-disinfection and water-purification systems that utilize photocatalyzed redox reactions. Depending on the specific nature of a water-treatment system, it is desirable to prevent the formation of bubbles for one or more reasons: (1) Bubbles can remove some organic contaminants from the liquid phase to the gas phase, thereby introducing a gas-treatment problem that complicates the overall water-treatment problem; and/or (2) in some systems (e.g., those that must function in microgravity or in any orientation in normal Earth gravity), bubbles can interfere with the flow of the liquid phase. The present oxygenation module (see Figure 1) is a modified version of a commercial module that contains >100 hollow polypropylene fibers with a nominal pore size of 0.05 m and a total surface area of 0.5 m2. The module was originally designed for oxygenation in a bioreactor, with no water flowing around or inside the tubes. The modification, made to enable the use of the module to oxygenate flowing water, consisted mainly in the encapsulation of the fibers in a tube of Tygon polyvinyl chloride (PVC) with an inside diameter of 1 in. (approx.=25 mm). In operation, water is pumped along the insides of the hollow fibers and oxygen gas is supplied to the space outside the hollow tubes inside the PVC tube. In tests, the pressure drops of water and oxygen in the module were found to be close to zero at water-flow rates ranging up to 320 mL/min and oxygen-flow rates up to 27 mL/min. Under all test conditions, no bubbles were observed at the water outlet. In some tests, flow rates were chosen to obtain dissolved-oxygen concentrations between 25 and 31 parts per million (ppm) . approaching the saturation level of approx.=35 ppm at a temperature of 20 C and pressure of 1 atm (approx.=0.1 MPa). As one would expect, it was observed that the time needed to bring a flow of water from an initial low dissolved-oxygen concentration (e.g., 5 ppm) to a steady high dissolved-oxygen concentration at or near the saturation level depends on the rates of flow of both oxygen and water, among other things. Figure 2 shows the results of an experiment in which a greater flow of oxygen was used during the first few tens of minutes to bring the concentration up to approx.=25 ppm, then a lesser flow was used to maintain the concentration.
The effect of losartan versus atenolol on carotid atherosclerosis in the common carotid arteries in hypertension. Icarus, a life substudy (2004)

We have previously demonstrated that losartan, but not atenolol, reduces carotid artery wall thickness. Therefore, we investigated whether losartan also reduces carotid atherosclerosis. In 95 LIFE patients with hypertension and electrocardiograhic left ventricular (LV) hypertrophy, we measured LV mass index by echocardiography and carotid atherosclerosis by ultrasound at baseline and after one, two and three years of anti-hypertensive treatment with either an atenolol or a losartan-based regimen. The semi-quantitatively (0=none, 0.5=very light, 1=light, 1.5=moderate 2=severe) assessments of the amount and density of the atherosclerotic lesions were added together. At baseline the degree of carotid atherosclerosis was equal in the two treatment groups and related to high LV mass index (r=0.27, P=0.01) independently of high systolic blood pressure (r=0.26, P<0.05) (adj. R2=0.15, P<0.001). Systolic and diastolic blood pressures were reduced equally in the two groups. The degree of atherosclerosis progressed only in patients treated with atenolol. The relative degree of atherosclerosis was significantly lower in losartan-treated patients already after one year of treatment (Table 1). index = in-treatment/baseline losartan vs. atenolol index = in-treatment/baseline losartan vs. atenolol The degree of carotid atherosclerosis was related to LV hypertrophy independently of systolic blood pressure. Progression of carotid atherosclerosis was arrested only in patients treated with losartan despite equal blood pressure reductions.
A molecular dynamics study on interaction between carbon nano-particles and a surface (2004)

The molecular behavior of a nano cluster in a nano scale flow field was investigated by the classical molecular dynamics method. A tiny butane cluster and an aluminium surface were employed to simulate the interaction processes of a nano cluster and a metallic filter. The structure of the hole of the filter and the incident angle of the nano cluster affect molecular adsorption behaviors on the filter.