gebhart/patrepeval huggingface dataset:
Role of libraries in promoting education: A bibliometric analysis (2012-2016) (2017)

Purpose




The principal objective of this study is to investigate the authorship pattern and the relationship between them based on some statistical indices for the role of libraries in promoting education at the global level.




Design/methodology/approach




Data were searched for the peer reviewed and full text available journal articles that contained specific words of either libraries and education or libraries and e-learning in ERIC database. The data was analyzed based on certain statistical calculations to find out the degree of collaboration, collaborative coefficient, Shannon Index, Simpson's Indices, Spearman's coefficient and co-authorship pattern. 




Findings




The criteria were met by 262 publications by 517 authors. The highest number of articles related with the role of libraries in education was published in the year 2013 and the highest numbers of articles were authored by single author rather than multiple authors. The degree of collaboration was found to be highest in the year 2015 and 2016 with a value of 0.66, whereas the collaborative coefficient was highest in the year 2016 with a value 0.42. The Shannon's diversity index was found to be 2.73705 with an evenness of 1.24568. The Simpson's index, Simpson's index of diversity and Simpson's reciprocal index were found to be 0.299, 0.701 and 3.3444 respectively. The Spearman's coefficient was found to be highest with a positive correlation of value 0.95 in the year 2013. Furthermore, 6 co-occurrences were found made by 8 authors. 




Research limitations/implications




Only ERIC database was chosen for the study with the articles published from the year 2012 to 2016.




Originality/value




This study would be useful to the researchers to get an insight into the collaborative research pattern by the authors in role of libraries in education with different statistical approaches.
A Study of Sparse Matrix Methods on New Hardware (2015)

Modeling of numerous scientific and engineering problems, such as multi-physic problems and analysis of electrical power systems, amounts to the solution of large scale linear systems. The main characteristics of such systems are the large sparsity ratio and the large number of unknowns that can reach thousands or even millions of equations. As a result, efficient solution of sparse large-scale linear systems is of great importance in order to enable analysis of such problems. Direct and iterative algorithms are the prevalent methods for solution of linear systems. Advances in computer hardware provide new challenges and capabilities for sparse solvers. The authors present a comprehensive evaluation of some, state of the art, sparse methods (direct and iterative) using modern computing platforms, aiming to determine the performance boundaries of each solver on different hardware infrastructures. By identifying the potential performance bottlenecks of out-of-core direct methods, the authors present a series of optimizations that increase their efficiency on flash-based systems.
Output Voltage Control by Frequency Regulation in Class-DE Power Amplifier (2007)

A Class DE or Class D Zero-Voltage Switching amplifier is a high-efficiency, radio-frequency power amplifier which also finds application in various power conversion industrial circuits such as dc/dc converters as well as dielectric and induction heaters. The output voltage (current or power) in these circuits can be controlled by varying the Class-DE-amplifier operating frequency and maintaining high efficiency over a wide range of output power. In the paper the computer-aided first-harmonic method is used to find relations defining parameters of the Class-DE amplifier vs. its operating frequency for the constant load resistance. It has been shown that by decreasing the operating frequency of the Class-DE-amplifier in the optimum mode its output voltage is increased. Unfortunately, then the efficiency is reduced because the transistors leave the ZVS region and their power losses rise. In contrast, by increasing the amplifier operating frequency its output voltage is decreased maintaining the ZVS operation and high efficiency (sub-optimum mode). The operating frequency can be increased up to the value corresponding to the second optimum operation mode of the Class-DE amplifier. The theoretical results have been verified by computer simulation with SPICE program as well as by experimental tests carried out for 1MHz 265W Class-DE amplifier (measured efficiency exceeded 96%).
Electrically tunable and polarization insensitive Fabry–Perot étalon with a liquid-crystal film (1991)

A polarization insensitive, electrically tunable Fabry–Perot structure is demonstrated. The polarization insensitivity is realized by using a twisted structure of a nematic liquid crystal such that the molecules at one surface are orthogonal to those at the other surface. In the high-field regime, this configuration can be thought of as a structure composed of two orthogonal, birefringent slabs with the electrically controllable thickness. At low voltages the device is polarization sensitive but becomes polarization insensitive at relatively higher voltages. In the polarization insensitive region, the linewidth of the transmission peak is of the order of 0.5 nm and the tuning range is about 15 nm.
Reactions of Functionalized Sulfonamides: Application to Lowering the Lipophilicity of Cytosolic Phospholipase A2α Inhibitors (2009)

The cPLA(2)alpha inhibitors we reported earlier were potent in both isolated enzyme and rat whole blood assays but have high plogD(7.4). To address these issues, reactions of electrophilic sulfonamides 9-12 were employed to incorporate various heterocyclic or heteroatom-based reagents into cPLA(2)alpha inhibitors. For example, reactions of 9 with sulfur nucleophiles such as thiophenol allowed rapid assembly of thioether analogues that were converted into the corresponding sulfoxides to afford less lipophilic derivatives. Reactions of 10 and 11 with various nitrogen nucleophiles, including aromatic heterocycles and aliphatic amines, provided an efficient way to introduce polarity into cPLA(2)alpha inhibitors. Finally, we report the first application of (2-formylphenyl)methanesulfonyl chloride, 13. Reductive amination of 2-formylphenylmethane sulfonamides allowed the introduction of various nitrogen nucleophiles. Several inhibitors obtained herein have plogD(7.4) values 3-4 units lower than previously synthesized compounds and yet maintain in vitro potency.
[Histology, immunocytochemistry and DNA cytophotometry of adrenal glandpheochromocytoma (PCC)--a morphologic clinal study of 64 tumors]. (1990)

Surgical specimens of 64 adrenal PCCs were investigated by conventional histology, immunocytochemistry and DNA-cytophotometry. Tumour weights of more than 200 g were recorded for each of the 6 malignant, but for only one of the 58 clinically benign neoplasms. Increased mitotic activity (greater than 5 mitoses/10 HPF) was, apart from one benign lesion, only seen among malignomas. Immunocytochemically, all malignomas were entirely devoid of S100-positive sustentacular cells and, as compared to benign PCCs, showed reduced expression rates of different neuropeptides. Upon cytophotometry, only 5/43 tumours exhibited euploid DNA histograms, all these cases belonging to the group of benign PCC. According to these findings, morphology does not enable a definite prediction of the clinical course of individual PCC cases, but renders the definition of risk groups possible. A benign diagnosis can be made in multihormonal euploid tumours weighing less than 200 g. In larger neoplasms and in cases lacking sustentacular cells and showing increased mitotic activity, an unfavourable prognosis is to be suspected and the same therapeutic procedures should be applied as for tumours in which malignancy is evident in metastatic growth.
Apoptosis and melanoma: molecular mechanisms (2003)

Melanoma cells can undergo self-destruction via programmed cell death, i.e. apoptosis. In these tumours, the molecular components of apoptosis include positive (apoptotic) and negative (anti-apoptotic) regulators. The former include p53, Bid, Noxa, PUMA, Bax, TNF, TRAIL, Fas/FasL, PITSLRE, interferons, and c-KIT/SCF. The latter include Bcl-2, Bcl-X(L), Mcl-1, NF-(K)B, survivin, livin, and ML-IAP. Alternatively, some molecules such as TRAF-2, c-Myc, endothelins, and integrins may have either pro- or anti-apoptotic effects. Some of these molecules are of potential therapeutic use, such as: (1) p53, which influences resistance to chemotherapy; (2) Mcl-1 and Bcl-X(L), which can override apoptosis; (3) TRAIL, which has selective fatal effects on tumour cells; (4) NF-(K)B, which when downregulated sensitizes cells to TRAIL and TNF; (5) the PITSLRE kinases, whose alteration appears to result in Fas resistance; (6) interferons, which sensitize cells to other factors; and (7) survivin and other IAPs that inhibit apoptosis. This review summarizes the state of current knowledge about the key molecular components and mechanisms of apoptosis in melanoma, discusses potential therapeutic ramifications, and provides directions for future research.
Flexible reference-counting-based hardware acceleration for garbage collection (2009)

Languages featuring automatic memory management (garbage collection) are increasingly used to write all kinds of applications because they provide clear software engineering and security advantages. Unfortunately, garbage collection imposes a toll on performance and introduces pause times, making such languages less attractive for high-performance or real-time applications. Much progress has been made over the last five decades to reduce the overhead of garbage collection, but it remains significant.
Point Of Care Testing of Ionized Magnesium in Blood with Potentiometric Sensors - Opportunities and Challenges (2011)

Magnesium assays are being increasingly requested in hospitals and clinical research institutions. The ionized form of magnesium (iMg) is regarded as the biologically active fraction. Ionophore-based potentiometric sensors can determine iMg and apply a selectivity correction for co-existing interfering electrolytes, e.g. Ca 2+ . This technology has been used in several commercial blood analyzers for measuring iMg in whole blood samples. This report reviews the utility of iMg in clinical settings with emphasis on point of care (POC) application, potentiometric Mg 2+ sensor technology and challenges and opportunities for future ionized magnesium assays.
A NEW FAULT LOCATION ALGORITHM FOR THREE-TERMINAL POWER LINE (2008)

This paper deals with fault location on three-terminal power line. The fault locator is considered as associated with the line protective relay, which communicates with the relays from the remaining line terminals and receives from them the phasors of measured threephase currents. Three subroutines of the fault location algorithm are formulated and an issue of selecting the subroutine, which is valid in particular fault case, is considered. Sample results of ATP-EMTP based evaluation of the fault location algorithm are presented.
Metal Sulfide Nanoparticles: Precursor Chemistry (2020)

Fascination with and the need for evermore increasing efficiency, power, or strength have been the cornerstones for developing new materials and methods for their creation. Higher solar cell conversion efficiencies, increased battery storage power, and lightweight strong materials are some that have been at the forefront of attention for these efforts. Materials created for most applications start as simple chemical compounds. A study of how these chemicals have been used in the past can be used to create new materials and new methods of production. Herein, a class of materials that are valuable in a multitude of applications, metal sulfide nanoparticles, are examined, along with how they are being produced and how new methods can be established that will help to standardize and increase production capabilities. Precursor-solvent combinations that can be used to create metal sulfide nanoparticles in the gas phase are also explored.
High-energy high-luminosity electron-ion collider eRHIC (2011)

In this paper, we describe a future electron-ion collider (EIC), based on the existing Relativistic Heavy Ion Collider (RHIC) hadron facility, with two intersecting superconducting rings, each 3.8 km in circumference. A new ERL accelerator, which provide 5-30 GeV electron beam, will ensure 10^33 to 10^34 cm^-2 s^-1 level luminosity.
Nuclear magnetic resonance study of interaction between anionic and nonionic surfactants in their mixed micelles (1971)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNuclear magnetic resonance study of interaction between anionic and nonionic surfactants in their mixed micellesFumikatsu Tokiwa and Kaoru TsujiiCite this: J. Phys. Chem. 1971, 75, 23, 3560–3565Publication Date (Print):November 1, 1971Publication History Published online1 May 2002Published inissue 1 November 1971https://pubs.acs.org/doi/10.1021/j100692a013https://doi.org/10.1021/j100692a013research-articleACS PublicationsRequest reuse permissionsArticle Views83Altmetric-Citations30LEARN 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
Photostable, hydrophilic and functional near infrared quaterrylenediimide-cored dendrimers for biomedical imaging (2012)

We describe a new class of near infrared (NIR) fluorescent dendrimeric quaterrylenediimide dyes with high photostability and hydrophilicity, functionality, as well as low cytotoxicity.
<title>Optical properties of the grating with 1300 lines/mm at PGS-2 spectrograph</title> (2007)

The spectral properties of the plane grating with 1300 lines/mm mounted at PGS-2 spectrograph constructed by Carl Zeiss GmbH were investigated. We elaborated the adjustable parameters for this grating and also we made some analysis of the matching for standard monochromator with our grating at PGS-2 spectrograph.
New Iridium Catalysts for the Selective Alkylation of Amines by Alcohols under Mild Conditions and for the Synthesis of Quinolines by Acceptor‐less Dehydrogenative Condensation (2014)

A novel family of iridium catalysts stabilised by P,N-ligands have been introduced. The ligands are based on imidazo[1,5-b]pyridazin-7-amines and can be synthesised with a broad variety of substitution patterns. The catalysts were synthesised quantitatively from the protonated ligands and a commercially available iridium precursor. The catalysts mediate the alkylation of amines by alcohols under mild conditions (70 °C). In addition, the synthesis of quinolines from secondary or primary alcohols and amino alcohols is reported. This sustainable synthesis proceeds through the liberation of two equivalents of water and two equivalents of dihydrogen. The investigations indicate that catalysts suitable for hydrogen autotransfer or borrowing hydrogen chemistry might also be suitable for acceptor-less dehydrogenative condensation reactions.
Poly(A)‐binding protein and eRF3 are associated in vivo in human and Xenopus cells (2002)

An interaction between human poly(A)-binding protein (PABP) et human eRF3 has been demonstrated using a double-hybrid approach and in vitro assays. Here, we show that the binding of both proteins is conserved through evolution. We also demonstrate that the last 39 C-terminal amino acids of PABP contain the interface that interacts with eRF3. This region includes helix 5, identified by RMN, which is conserved in all known PABPs. Lastly, we demonstrate that eRF3 et PABP molecules interact in vivo.
Semisynthetic Analogues of PSC-RANTES, a Potent Anti-HIV Protein (2008)

New HIV prevention methods are needed, and among those currently being explored are "microbicides", substances applied topically to prevent HIV acquisition during sexual intercourse. The chemokine analogue PSC-RANTES (N(alpha)(n-nonanoyl)-des-Ser(1)-[ L-thioprolyl(2), L-cyclohexylglycyl(3)]-RANTES(4-68)) is a highly potent HIV entry inhibitor which has shown promising efficacy in its initial evaluation as a candidate microbicide. However, a way must be found to produce the molecule by cheaper means than total chemical synthesis. Since the only noncoded structures are located at the N-terminus, a possible solution would be to produce a protein fragment representing all but the N-terminal region using low-cost recombinant production methods and then to attach, site specifically, a short synthetic fragment containing the noncoded N-terminal structures. Here, we describe the evaluation of a range of different conjugation chemistries in order to identify those with potential for development as economical routes to production of a PSC-RANTES analogue with antiviral activity as close as possible to that of the parent protein. The strategies tested involved linkage through oxime, hydrazone/hydrazide, and Psi[CH2-NH] bonds, as well as through a peptide bond obtained either by a thiazolidine rearrangement or by direct alpha-amino acylation of a protein fragment in which 4 of the 5 lysine residues of the native sequence were replaced by arginine (the fifth lysine is essential for activity). Where conjugation involved replacement of one or more residues with a linker moiety, the point in the main chain at which the linker was introduced was varied. The resulting panel of 22 PSC-RANTES analogues was evaluated for anti-HIV activity in an entry inhibition assay. The [Arg (25,45,56,57)] PSC-RANTES analogue has comparable potency to PSC-RANTES, and one of the oxime linked analogues, 4L-57, has potency only 5-fold lower, with scope for improvement. Both represent promising leads for development as microbicide compounds that could be produced at low cost via semisynthesis.
Improved High Efficiency Stacked Microstructured Neutron Detectors Backfilled With Nanoparticle $^{6}$LiF (2011)

Silicon diodes with large aspect ratio trenched microstructures, backfilled with <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">6</sup> LiF, show a dramatic increase in thermal neutron detection efficiency beyond that of conventional thin-film coated planar devices. Described in this work are advancements in the technology using detector stacking methods to increase thermal neutron detection efficiency, along with the current process to backfill <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">6</sup> LiF into the silicon microstructures. The highest detection efficiency realized thus far is over 42% intrinsic thermal neutron detection efficiency by device-stacking methods. The detectors operate as conformally diffused pn junction diodes each having 1 cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> area. Two individual devices were mounted back-to-back with counting electronics coupling the detectors together into a single dual-detector device. The solid-state silicon device was operated at 3 V and utilized simple signal amplification and counting electronic components that have been adjusted from previous work for slow charge integration time. The intrinsic detection efficiency for normal-incident 0.0253 eV neutrons was found by calibrating against a <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> He proportional counter.
Picosecond ultrasonic experiments to study phonon solitons (2004)

Abstract We describe experiments to study the propagation of phonon solitons in crystalline solids. A picosecond light pulse is used to generate a short strain pulse. As this pulse propagates, its shape changes as a result of phonon dispersion and elastic non‐linearity. After traveling a sufficient distance, the pulse breaks up into a number of solitons. The amplitude and number of these solitons are in excellent agreement with theoretical expectations. (© 2004 WILEY‐VCH Verlag GmbH &amp; Co. KGaA, Weinheim)
Radiation Increases Fibrogenic Cytokine Expression by Peyronie’s Disease Fibroblasts (2003)

These data suggest that radiation may in fact increase the production of fibrogenic cytokines, which may promote the fibrotic process involved in Peyronie's disease. Further study is aimed at defining the effect of irradiation on plaque tissue.
Characterization of Infectious Retroviral Pseudotype Particles Bearing Hepatitis C Virus Glycoproteins (2004)

The recent development of infectious retroviral pseudotypes bearing hepatitis C virus (HCV) glycoproteins represents an opportunity to study the functionally active form of the HCV E1 and E2 glycoproteins. In the culture supernatant of cells producing HCV retroviral pseudotypes, the majority of E2 was not associated with infectious particles and failed to sediment on sucrose gradients. The E2 that was incorporated into infectious particles appeared as a triplet of diffuse bands at 60, 70, and 90 kDa. Similarly, three major forms of E1 were incorporated into the pseudotype particles, migrating at 33, 31, and 25 kDa. Endoglycosidase H (endo-H) treatment of particles demonstrated that the incorporated E1 was partially or completely sensitive to digestion. In contrast, the majority of the incorporated E2 was endo-H resistant. Purified pseudotype particles were found to contain both disulfide-linked aggregates and nonaggregated E1 and E2. HCV pseudotypes generated from cells expressing E1E2p7 showed similar heterogeneity in the incorporated glycoproteins and were of comparable infectivity to those generated by expression of E1E2. Our results demonstrate the heterogeneous nature of E1 and E2 incorporated into retroviral pseudotypes and highlight the difficulty in identifying forms of the HCV glycoproteins that initiate infection.
Identification and characterization of cDNA sequences encoding the HIS3 and LEU2 genes of the fungus Alternaria tenuissima (2008)

Alternaria tenuissima 是在环境广泛地在场的真菌并且能在工厂和人引起疾病。在这学习，通过酵母基因途径， cDNA 序列为 AtHIS3 和 AtLEU2 基因被孤立并且描绘。AtHIS3 cDNA 编码 238 氨基酸的蛋白质，当 AtLEU2 cDNA 编码 363 氨基酸的蛋白质时。基于 AtHis3p 和 AtLeu2p 的氨基酸顺序的种系发生的分析，一。tenuissima 是仔细与植物有关病原的真菌 Phaeosphaeria nodorum。这研究为调整 A 的开发，形态学，和毒力的基因的函数的研究提供二个基因标记。tenuissima。
ChemInform Abstract: Synthesis of Derivatives of Pyrazino(1,2‐a)pyrimidin‐4‐ones. (1991)

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.