85 research outputs found
Bibliometric analysis of the articles published in the Rawal Medical Journal between 2008 and 2019
No full textObjective: To present bibliometric analysis of the articles published in Rawal Medical Journal (RMJ) from 2008 to2019.Methodology: We used the Scopus database, during the months of August and September 2020, for the retrieval and analysis of RMJ publications. We downloaded the retrieved dataset in the Comma Separated Values (CSV) format and transferred the file to a Microsoft Excel Spreadsheet for analysis. We also compared the citations of top 10 most cited RMJ publications in the Scopus to the Google Scholar citations. Results: A total of 1,487 articles were found, published in 12 volumes and 42 issues, with an average of 3.91 pages per document. The articles published in RMJ received 1,003 citations in the Scopus database with an impact of 0.67 citations per article. The Shifa International Hospital, Islamabad was the most contributing organization with 82 publications and Ashfaq Ahmed was the most contributing author with 21 publications. The authors, outside Pakistan, belonged to 31 countries and Jordan was ranked first with 119 publications. Conclusion: A promising growth in the number of publications in RMJ is observed during last 12 years. However, there is a dire need to encourage authors to write on innovative ideas in collaboration with international researchers to enhance the citation impact of articles published in the journa
On polar Legendre polynomials
No full text10 pages, no figures.-- MSC2000 codes: Primary 42C05; Secondary 33C25.-- ArXiv pre-print available at: http://arxiv.org/abs/0709.4537Accepted in Rocky Mountain Journal of Mathematics.We introduce a new class of polynomials {Pn}, that we call polar Legendre polynomials, they appear as solutions of an inverse Gauss problem of equilibrium
position of a field of forces with n + 1 unit masses. We study algebraic, differential
and asymptotic properties of this class of polynomials, that are simultaneously
orthogonal with respect to a differential operator and a discrete-continuous Sobolev
type inner product.Research by first author (H.P.) was partially supported by Dirección General de Investigación, Ministerio de Ciencia y Tecnología de España, under grant MTM2006-13000-C03-02, by Comunidad de Madrid-Universidad Carlos III de Madrid, under grant CCG06-UC3M/EST-0690 and by Centro de Investigación Matemática de Canarias (CIMAC). Research by second author (J.Y.B.) was supported by CNPq-TWAS. Research by third author (W.U.) was partially supported by Centro de Investigación Matemática de Canarias (CIMAC).En prens
Orthogonal polynomials with respect to a differential operator. Existence and uniqueness
No full text15 pages, no figures.-- MSC1991 codes: Primary 42C05.MR#: MR1934900 (2003i:42033)Zbl#: Zbl 1029.42018A new type of orthogonal polynomial connected withlin ear differential operators, intimately related withS obolev orthogonal polynomials and Hermite-Padé polynomials, is introduced. We study the question of uniqueness of the sequence of orthogonal polynomials arising from this construction. As we show, this problem is related to the analytic properties of the fundamental system of solutions of the operator. The notion of T-system of Tchebyshev plays a key role in the analysis. Some examples of general classes of operators which produce a unique system of polynomials are given.The research of the first author (A.I.A.) was supported by grant 93-01278 of the Russian
Basic Research Foundation. The research of the second (G.T.L.L.) and third (F.M.) authors was supported by Dirección General de Investigación (Ministerio de Ciencia y Tecnología) of Spain under grant BFM2000-0206-C04-01, and INTAS 2000-272.Publicad
Interaction of tyrosine-, tryptophan-, and lysine-containing polypeptides with single-wall carbon nanotubes and its relevance for the rational design of dispersing agents
No full textThe polypeptides poly-L-(Trp,Lys·HBr) (Trp/Lys·HBr = n/m) and poly-L-(Tyr,Lys·HBr) (Tyr/Lys·HBr = n/m) were tested as dispersing agents for single-wall carbon nanotubes (SWCNTs) for n/(n+m) values of 0, 0.2, and 1. Best results were obtained for the two copolymers, illustrating the importance of using amphiphilic dispersing agents. The dispersion effect is 3.5 times higher for the copolymer containing tryptophan, indicating a stronger interaction of the tryptophan residue with the SWCNTs compared to tyrosine. The degrees of debundling of the SWCNTs and the apparent binding of the polypeptides with the SWCNTs are analyzed by atomic force microscopy for the different dispersions. The interactions of the aromatic amino acid residues with the SWCNTs are further probed by using optical absorbance and fluorescence spectroscopy. © 2007 American Chemical Society
Optimizing the PMIRRAS signal from a multilayer system and application to self-assembled monolayers in contact with liquids
No full textAn electrodeposition study of the nucleation and growth of silver on boron-doped diamond electrodes
No full textA study is reported of the electrochemical nucleation of silver on boron-doped diamond from aqueous solutions of silver nitrate, using a single-pulse potentiostatic technique. Data are obtained for the nucleation rate by interpretation of the deposition voltammetry, and by inspection of in situ optical microscopic images. The distribution of nearest neighbours is determined as a function of time and also the first to fifth nearest-neighbour distributions are examined at specific times. The distribution of nucleus areas is found and a simple stochastic model of nucleation and growth developed in order to understand qualitatively the nearest neighbour and nucleus area results. © 2003 Elsevier B.V. All rights reserved
Cardinal invariants and special maps of quasicontinuous functions with the topology of pointwise convergence
No full text[EN] For topological spaces X and Y, let Qp(X,Y) be the space of all quasicontinuous functions from X to Y with the topology of pointwise convergence. In this paper, we study the cardinal invariants such as cellularity, character, weight, density, pseudocharacter and spread of the space Qp(X,Y). We also discuss the properties of the restriction and induced maps related to the space Qp(X,Y).The first author acknowledges the fellowship grant of University Grant Commission, India with Student-ID DEC18-414765.Kumar, M.; Tyagi, BK. (2022). Cardinal invariants and special maps of quasicontinuous functions with the topology of pointwise convergence. Applied General Topology. 23(2):303-314. https://doi.org/10.4995/agt.2022.16925OJS303314232A. V. Arhangel'skii, Topological Function Spaces, Mathematics and its Applications (Soviet Series), vol. 78, Kluwer Academic Publishers Group, Dordrecht, 1992.J. Borsík, Points of continuity, quasicontinuity and cliquishness, Rend. Istit. Mat. Univ. Trieste 26 (1994), 5-20.R. Cazacu and J. D. Lawson, Quasicontinuous functions, domains, and extended calculus, Appl. Gen. Topol. 8 (2007), 1-33. https://doi.org/10.4995/agt.2007.1908A. Crannell, M. Frantz and M. LeMasurier, Closed relations and equivalence classes of quasicontinuous functions, Real Anal. Exchange 31 (2005/06), 409-424. https://doi.org/10.14321/realanalexch.31.2.0409R. Engelking, General Topology, Sigma Series in Pure Mathematics, vol. 6, Heldermann Verlag, Berlin, 1989.L. Holá and D. Holý, Minimal {USCO} maps, densely continuous forms and upper semi-continuous functions, Rocky Mountain J. Math. 39 (2009), 545-562. https://doi.org/10.1216/RMJ-2009-39-2-545L. Holá and D. Holý, Pointwise convergence of quasicontinuous mappings and {B}aire spaces, Rocky Mountain J. Math. 41 (2011), 1883-1894. https://doi.org/10.1216/RMJ-2011-41-6-1883L. Holá and D. Holý, Quasicontinuous functions and the topology of pointwise convergence, Topology Appl. 282 (2020), Article No. 107301. https://doi.org/10.1016/j.topol.2020.107301D. Holý and L. Matejíčka, Quasicontinuous functions, minimal {USCO} maps and topology of pointwise convergence, Math. Slovaca 60 (2010), 507-520. https://doi.org/10.2478/s12175-010-0029-3S. Kempisty, Sur les fonctions quasicontinues, Fundamenta Mathematicae 19 (1932), 184-197. https://doi.org/10.4064/fm-19-1-184-197P. S. Kenderov, I. S. Kortezov and W. B. Moors, Topological games and topological groups, Topology Appl. 109 (2001), 157-165. https://doi.org/10.1016/S0166-8641(99)00152-2P. S. Kenderov, I. S. Kortezov and W. B. Moors, Continuity points of quasi-continuous mappings, Topology Appl. 109 (2001), 321-346. https://doi.org/10.1016/S0166-8641(99)00180-7N. Levine, Semi-open sets and semi-continuity in topological spaces, Amer. Math. Monthly 70 (1963), 36-41. https://doi.org/10.1080/00029890.1963.11990039R. A. McCoy and I. Ntantu, Topological Properties of Spaces of Continuous Functions, Lecture Notes in Mathematics, vol. 1315, Springer-Verlag, Berlin, 1988. https://doi.org/10.1007/BFb0098389T. Neubrunn, Quasi-continuity, Real Anal. Exchange 14 (1988/89), 259-306. https://doi.org/10.2307/44151947Z. Piotrowski, A survey of results concerning generalized continuity of topological spaces, Acta Math. Univ. Comenian. 52/53 (1987), 91-110.V. V. Tkachuk, A -Theory Problem Book, Topological and function spaces, Problem Books in Mathematics, Springer, New York, 2011. https://doi.org/10.1007/978-1-4419-7442-
Can the concept of “lean management” be applied to academic recruitment? – a quasi-theoretical discourse
No full textThis paper seeks to emphasise the need to re-evaluate university teacher recruitment processes.The implementation of lean processes helps to improve organisational practices; in the case of universityrecruitment, however, organisational processes have remained unchanged for decades. Although there is atraditional justification for having academic recruitment as a rigorous and complex process (as a practicedmethod by which to identify the most suitable applicants), the increase of competition across the sector, andthe internet revolution, has rendered these older methods partially ineffective. The author argues thatrecruitment systems and practices need reviewing to overhaul inefficacious elements
Meromorphic traveling wave solutions of the complex cubic-quintic Ginzburg-Landau equation
No full textWe look for singlevalued solutions of the squared modulus M of the traveling wave reduction of the complex cubic-quintic Ginzburg-Landau equation. Using Clunie's lemma, we first prove that any meromorphic solution M is necessarily elliptic or degenerate elliptic. We then give the two canonical decompositions of the new elliptic solution recently obtained by the subequation method. © 2012 The Author(s).postprin
Applying grazing incidence X-ray reflectometry (XRR) to characterising nanofilms on mica.
No full textMolecularly smooth mica has hitherto not been widely used as a substrate for the X-ray reflectometry (XRR) technique. That is largely due to the difficulty of achieving flatness over a sufficiently large area of mica. Here we show that this difficulty can be overcome by slightly bending the mica substrate over an underlying cylinder; the enhanced rigidity of the bent mica sheet along the axis of the cylinder provides sufficient flatness along this axis for XRR measurements. To test this method, we have employed it to characterise three types of nanofilms on mica in air: (A) Cr-Au thin films; (B) a surface-grown zwitterionic polymer brush; and (C) a Langmuir-Blodgett (LB) phospholipid monolayer, using a table-top X-ray reflectometer. Fitting the obtained reflectivity curves with the standard Parratt algorithm allows us to extract the structural information of the nanofilms (both thickness and apparent roughness). Our simple method points to how XRR may be exploited as a useful characterisation tool for nanofilms on mica
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