gebhart/patrepeval huggingface dataset:
A performance measurement system to quantify the contribution of social media: new requirements for metrics and methods (2016)

Purpose The purpose of this paper is to focus on measuring the contribution generated by social media when used for business purposes, distinguishing between metrics and methods for data collection and data analysis. Organizations worldwide have widely endorsed social media, but available studies on the contribution generated by these technologies for organizations are fragmented. A performance measurement system (PMS) framework to monitor social media is theoretically derived, highlighting the methods for data collection and data analysis and metrics to quantify social media impacts in terms of financials, network structure, interactions, conversations and users’ opinion. Design/methodology/approach This is a qualitative research based on a literature review of papers in management, information technology, marketing and public relations. Findings A PMS framework to quantify the contribution of social media is theoretically derived, distinguishing between metrics and methods. PMS metrics support the measurement of the financial and relational impact of social media, as well as the impact of social media conversations and users’ opinions. PMS methods comprise different approaches for data collection and data analysis that range from manual to automated data collection and from content to sentiment analysis techniques. Originality/value The PMS framework contributes to the academic literature by integrating a unique model of the available approaches for social media measurement that can serve as a basis for future research directions. The framework also supports practitioners that face necessity to quantify financial and relational contributions of social media as well as the contribution of social media conversation and users’ opinion.
Electro-nucleation of water nano-droplets in No Man's Land to fault-free ice I<sub>c</sub> (2018)

Elucidating water-to-ice freezing, especially in "No Man's Land" (150 K < T < 235 K), is fundamentally important (e.g., predicting upper-troposphere cirrus-cloud formation) - and elusive. An oft-neglected aspect of tropospheric ice-crystallite formation lies in inevitably-present electric fields' role. Exploring nucleation in No Man's Land is technically demanding, owing to rapid nucleation rates, to mention nothing of difficulties of applying relevant electric fields thereto. Here, we tackle these intriguing open questions, via non-equilibrium molecular-dynamics simulations of sub-microsecond formation of rhombus-shaped ice I<sub>c</sub> nano-crystallites from aggressively-quenched supercooled water nano-droplets in the gas phase, in external static electric fields. We explore droplets' nano-confined geometries and the entropic-ordering agent of external electric fields as a means of realising cubic-ice formation, especially with very few stacking faults and defects.
Potential of Starch Encapsulated Semiochemical-Insecticide Formulations for Adult Corn Rootworm (Coleoptera: Chrysomelidae) Control (1991)

Journal Article Potential of Starch Encapsulated Semiochemical-Insecticide Formulations for Adult Corn Rootworm (Coleoptera: Chrysomelidae) Control Get access Thomas J. Weissling, Thomas J. Weissling Department of Entomology, University of Nebraska, Lincoln, Nebraska 68583-0816 Search for other works by this author on: Oxford Academic PubMed Google Scholar Lance J. Meinke Lance J. Meinke Department of Entomology, University of Nebraska, Lincoln, Nebraska 68583-0816 Search for other works by this author on: Oxford Academic PubMed Google Scholar Journal of Economic Entomology, Volume 84, Issue 2, 1 April 1991, Pages 601–609, https://doi.org/10.1093/jee/84.2.601 Published: 01 April 1991 Article history Received: 15 March 1990 Accepted: 11 September 1990 Published: 01 April 1991
High-efficiency class-F RF/microwave power amplifiers (2006)

This article provides a tutorial and review of recent developments in high-efficiency class F RF/ microwave PAs. The principles of class-F RF PAs are explained first. Recent progress in their theory and in design techniques is then presented. Different approaches of class-F PA designs are explained, and some examples of practical designs are illustrated. Finally, an attempt is made to discuss the future developments of class-F RF/microwave PAs.
Comparison of artemisinin suppositories with intravenous artesunate and intravenous quinine in the treatment of cerebral malaria (1992)

Seventy-nine comatose cerebral malaria patients given standard supportive treatment were randomized to receive specific antimalarial chemotherapy of intravenous quinine, intravenous artesunate, or artemisinin suppositories. Artesunate and artemisinin reduced peripheral asexual parasitaemia significantly more rapidly than quinine (90% clearance time 16 h, 18.9 h and 34.5 h respectively), but did not significantly reduce the duration of coma or mortality. The rapid lowering of peripheral parasitaemia may not ameliorate complications already present. These results demonstrate that artemisinin suppositories are as effective as artesunate and quinine given intravenously, and have economic and practical advantages for the treatment of severe malaria in areas remote from major medical centres. However, large numbers of patients will need to be studied if differences in mortality between the 3 treatment groups are to be demonstrated.
Millimeter-Wave Fan-Beam Antenna Based on Step-Index Cylindrical Homogeneous Lens (2012)

A novel step-index cylindrical homogeneous lens at millimeter-wave (MMW) frequencies is designed by using the technique of parallel plates propagating the TE <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sub> mode. The cylindrical homogeneous lens, which is sandwiched between two parallel conducting plates, has an H-shaped cross section to give the desired step-index of refraction. For a given aperture size, the focal length of the cylindrical homogeneous lens can be adjusted by changing the cross-section structural parameters rather than the dielectric material itself, which should be highlighted for cylindrical homogeneous lens for the first time. A planar linearly tapered slot antenna (LTSA) is chosen to feed the cylindrical homogeneous lens. The ray-tracing and transverse resonance methods are used to analyze and design this lens antenna at 30 GHz. Measured results of the fabricated lens antenna show good agreement with simulations. At 30 GHz, the measured 3-dB E- and H-plane beamwidths are 6.1° and 50.2°, respectively, and the first sidelobe level in the E-plane is -16.3 dB. The measured gain is 17.9 dB, corresponding to a radiation efficiency of 67.2%.
An ultra low-power DSP system with a flexible filterbank (2001)

A subband DSP system consuming about an order of magnitude less power than current systems doing similar tasks is presented for hearing aid and other applications. System packaging is tiny through the combination of an efficient system design and the use of deep submicron technology. A highly tuned architecture results in low system current and low voltage (1V). The system is comprised of three parts: a DSP core, an input/output processor creating frames of input speech signals, and a weighted overlap-add (WOLA) filter bank unit performing windowing, FFT and vector multiplications. The flexibility of the WOLA filter bank architecture is demonstrated through three different applications.
Copy protection system for digital home networks (2004)

This article describes the rationale supporting and design of a copy protection system called SmartRight. While carefully presenting our motivations, some light is shed on the very peculiar problems raised by the enforcement of copy protection. Hence, this article also explores less technical but highly important issues such as the legal and commercial aspects.
<i>Escherichia coli</i> Gene Expression Responsive to Levels of the Response Regulator EvgA (2002)

To investigate the function of the EvgA response regulator, we compared the genome-wide transcription profile of EvgA-overexpressing and EvgA-lacking Escherichia coli strains by oligonucleotide microarrays. The microarray measurements allowed the identification of at least 37 EvgA-activated genes, including acid resistance-related genes gadABC and hdeAB, efflux pump genes yhiUV and emrK, and 21 genes with unknown function. EvgA overexpression conferred acid resistance to exponentially growing cells. This acid resistance was abolished by deletion of ydeP, ydeO, or yhiE, which was induced by EvgA overexpression. These results suggest that ydeP, ydeO, and yhiE are novel genes related to acid resistance and that EvgA regulates several acid resistance genes. Furthermore, the deletion of yhiE completely abolished acid resistance in stationary-phase cells, suggesting that YhiE plays a critical role in stationary-phase acid resistance. The multidrug resistance in an acrB deletion mutant caused by EvgA overexpression was completely abolished by deletion of yhiUV, while the emrKY deletion had no effect on the increase in resistance by EvgA overexpression. In addition, EvgA overexpression did not confer resistance in a tolC-deficient strain. These results suggest that YhiUV induced by EvgA overexpression is functionally associated with TolC and contributes to multidrug resistance.
Ethylene Treatment of Tomatoes (1931)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEthylene Treatment of TomatoesE. F. KohmanCite this: Ind. Eng. Chem. 1931, 23, 10, 1112–1113Publication Date (Print):October 1, 1931Publication History Published online1 May 2002Published inissue 1 October 1931https://pubs.acs.org/doi/10.1021/ie50262a010https://doi.org/10.1021/ie50262a010research-articleACS PublicationsRequest reuse permissionsArticle Views86Altmetric-Citations5LEARN 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
Radiographic mottle: A comprehensive theory (1982)

A comprehensive theory of radiographic density fluctuations is developed. The theory incorporates film granularity, quantum mottle, the absorbed x-ray photon energy distribution, fluctuations in phosphor light photon yield, and phosphor coating weight variations. The resulting expressions allow one to calculate the density fluctuations or, alternatively, the Wiener spectrum that will be obtained with a radiographic screen/film system from the physical parameters of the system. Reasonable agreement is obtained between experimental results and calculated values for three typical screen/film systems. An expression is also derived for the detective quantum efficiency (DQE) of screen/film systems, and the results of DQE calculations are presented for a commonly used screen/film combination as a function of density and of object size.
Constant Voltage Current, and Power: A Circuit for All Reasons (1978)

A simple inductor, capacitor, and resistor circuit is shown to provide versatile characteristics which can be exploited for constant voltage, constant current, or constant power applications. To reflect these capabilities, it is referenced as the (VIP) circuit. Exact performance characteristics are dependent upon how the circuit constants are chosen. These choices are explained and some nondimensional curves are provided for design purposes. Practical uses described include high-voltage constant-current power supplies and a capacitor charging circuit which draws a constant amplitude sinusoidal current from an ac source.
The 2′,4′,6′-Trihydroxyacetophenone Isolated from<i>Myrcia multiflora</i>Has Antiobesity and Mixed Hypolipidemic Effects with the Reduction of Lipid Intestinal Absorption (2011)

This study evaluated the hypolipidemic and antiobesity effects of phloroacetophenone (2',4',6'-trihydroxyacetophenone, THA) isolated from Myrcia multiflora and their relationship with triglyceride (TG) intestinal absorption and pancreatic lipase activity inhibition. The hypolipidemic effect of THA was evaluated by acute (Triton WR-1339 treatment) and chronic assay (high-fat diet treatment), the antiobesity effect was evaluated by chronic assay (high-fat diet treatment), while the inhibition of enzymatic activity of pancreatic lipase was measured in the intestinal tissue of mice treated with high olive oil concentration. In the acute assay, THA caused greater total cholesterol (37 %) and triglyceride (46 %) serum level reduction than lovastatin (32 and 1 %), a HMG-CoA reductase inhibitor or orlistat (26 and 34 %), a gastrointestinal lipase inhibitor. In addition, in the chronic assay with a high-fat diet, THA reduced cholesterol and triglyceride levels (32 and 61 %, respectively) while lovastatin showed a decrease of 35 and 49 %, respectively. THA also caused a reduction in weight gain very similar to orlistat (40 and 38 %, respectively) when the animals were submitted to a high-fat diet. Moreover, THA showed a stronger and continuous pancreatic lipase inhibitory activity when compared with orlistat, causing inhibition of this enzyme during 6 hours associated to a significant reduction of triglyceride serum levels. The IN VIVO antiobesity and hypolipidemic effects of THA may be partly mediated by delaying the intestinal absorption of dietary fat by inhibiting pancreatic lipase activity.
Les projets d'amenagement de la region de la Durance (1953)

L. X. Les projets d'aménagement de la région de la Durance. In: Population, 8ᵉ année, n°2, 1953. pp. 369-370.
Work Practices and Challenges in Pull-Based Development: The Integrator's Perspective (2015)

In the pull-based development model, the integrator has the crucial role of managing and integrating contributions. This work focuses on the role of the integrator and investigates working habits and challenges alike. We set up an exploratory qualitative study involving a large-scale survey of 749 integrators, to which we add quantitative data from the integrator's project. Our results provide insights into the factors they consider in their decision making process to accept or reject a contribution. Our key findings are that integrators struggle to maintain the quality of their projects and have difficulties with prioritizing contributions that are to be merged. Our insights have implications for practitioners who wish to use or improve their pull-based development process, as well as for researchers striving to understand the theoretical implications of the pull-based model in software development.
Light sensitization of DNA nanostructures via incorporation of photo-cleavable spacers (2015)

Using light irradiation as a trigger, large-scale structural reconfiguration of DNA nanostructures is demonstrated. We incorporated photo-cleavable spacers at strategic locations within the short oligonucleotide strands connecting adjacent helices within a DNA origami sphere, and then used light to transform the sphere into two tethered hemispheres.
Pulpal effects of enamel ablation with a microsecond pulsed <i>λ</i> = 9.3‐µm CO<sub>2</sub> laser (2009)

It appears that this CO2 laser can ablate enamel safely without harming the pulp under the rate of energy deposition employed in this study.
Association of Circulating Serum miR-34a and miR-122 with Dyslipidemia among Patients with Non-Alcoholic Fatty Liver Disease (2016)

Non-alcoholic fatty liver disease (NAFLD) covers a spectrum of diseases from simple steatosis to non-alcoholic steatohepatitis, with approximately 20% risk of progressing to fibrosis and cirrhosis. The aim of this study was to compare the relative expression levels of circulating miR-21, miR-34a, miR-122, miR-125b and miR-375 between healthy controls and NAFLD patients, and to assess the feasibility of microRNAs as potential biomarkers for NAFLD. A cross-sectional study was conducted to evaluate circulating serum miRNAs as potential diagnostic markers for NAFLD. Twenty-eight clinically diagnosed and histologically-confirmed NAFLD patients, as well as 36 healthy controls were enrolled in this study. The relative expression of serum microRNAs were calculated using the comparative cycle threshold with spiked-in C. elegans miR-39 as exogenous internal control. Serum levels of miR-34a and miR-122 were significantly higher in NAFLD patients than in healthy controls (P = <0.0001). Positive correlations were observed between serum miR-34a with very low density lipoprotein cholesterol (VLDL-C) and triglyceride levels. However, the expression levels of miR-34a and miR-122 did not correlate with the histological features of NAFLD. Interestingly, receiver operating characteristic (ROC) curve analysis revealed that miR-34a and miR-122 are potential markers for discriminating NAFLD patients from healthy controls with an area under the curve (AUC) values of 0.781 and 0.858, respectively. Serum levels of miR-34a and miR-122 were found to be significantly higher among NAFLD patients, and were positively correlated with VLDL-C and triglyceride levels. Thus, circulating miR-34a and miR-122 can be used as potential biomarkers for discriminating NAFLD patients from healthy controls. Larger cohorts are required to validate the utility of miR-34a and miR-122 in monitoring liver injury.
A 200-MHz CMOS phase-locked loop with dual phase detectors (1989)

A high-frequency integrated CMOS phase-locked loop (PLL) including two phase detectors is presented. The design integrates a voltage-controlled oscillator, a multiplying phase detector, a phase-frequency detector, and associated circuitry on a single die. The loop filter is external for flexibility and can be a simple passive circuit. A 2- mu m CMOS p-well process was used to fabricate the circuit. The loop can lock on input frequencies in excess of 200 MHz with either or both detectors and consumes 500 mW from a single 5-V supply. The oscillator is a ring of three inverting amplifiers and draws from an internal supply voltage regulated by an on-chip bandgap reference. This combination serves to reduce the supply and temperature sensitivity is less than 5%/V, and the oscillator temperature variation is 2.2% in the range of 25 to 80 degrees C. The typical oscillator tuning range is 112 to 209 MHz. The multiplying phase detector and phase-frequency detector exhibit input-referred phase offsets of <4 degrees and -24 degrees , respectively. A numerical system simulation program was written to explore the time-domain behavior of an idealized model based on the PLL design.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Long wavelength performance of optical fibres co-doped with fluorine (1981)

Glasses in the SiO2/GeO2/F/P2O5 system have been investigated as materials for core and cladding of multimode and single-mode fibres, and the possibility of using F-doping whilst achieving low attenuation in the 1- 1.8 μm region established. Minimum values of 0.28 dB km and 0.23 dB km have been observed in single-mode and multimode fibres, respectively.
Epidermal growth factor receptor kinase translocation and activation in vivo. (1986)

The rat liver epidermal growth factor (EGF) receptor was assessed for EGF-dependent autophosphorylation as well as phosphorylation of a defined exogenous substrate in purified plasmalemma and Golgiendosome fractions isolated from rat liver homogenates. While EGF-dependent kinase activity was readily detected in plasmalemma the corresponding activity in Golgi-endosome fractions required detergent. Consequent to the systemic injection of EGF in vivo, the majority (approximately 60%) of receptor as evaluated by 125I-EGF binding was rapidly lost (T 1/2 approximately 8 min) from the plasmalemma and correspondingly accumulated in the Golgi-endosome fraction in a dose-dependent manner. Electron microscope radioautography of 125I-EGF uptake into Golgi-endosome fractions identified internalization into lipoprotein-filled vesicles of heterogenous size and shape but not into stacked saccules of the Golgi apparatus. Evaluation of receptor kinase activity in plasmalemma fractions isolated at various times after EGF injection in vivo showed more rapid loss of EGF-dependent autophosphorylation activity (T 1/2 approximately 10 s) than of receptor content (T 1/2 approximately 8 min). In contrast to the EGF receptor kinase of the plasmalemma fraction, kinase activity accumulating in endosomes was activated, i.e. maximally stimulated, in the absence of EGF or Triton X-100 in vitro. Furthermore, following the peak time of accumulation of EGF receptor kinase in endosomes (5-15 min) EGF-dependent autophosphorylation activity and EGF receptor content were lost more slowly (T 1/2 approximately 27 and 87 min for the loss of autophosphorylation activity and receptor content, respectively). The rapidity of translocation of activated EGF receptor into endosomes (30 s) and the dose response to low levels (1 microgram) of EGF injected are consistent with a physiological role for internalized EGF receptor kinase activity.
Advantages of using fuzzy class memberships in self-organizing map and support vector machines (2002)

The self-organizing map (SOM) is naturally unsupervised learning, but if a class label is known, it can be used as the classifier. In a SOM classifier, each neuron is assigned a class label based on the maximum class frequency and classified by a nearest neighbor strategy. The drawback when using this strategy is that each pattern is treated by equal importance in counting class frequency regardless of its typicalness. For this reason, the fuzzy class membership can be used instead of crisp class frequency and this fuzzy membership-label neuron provides another perspective of a feature map. This fuzzy class membership can be also used to select training samples in a support vector machine (SVM) classifier. This method allows us to reduce the training set as well as support vectors without significant loss of classification performance.