method (Royle et al. 2007 , p. 64).
The remainder of the article is organised as follows: In “ Bibliographic database comparison, co-publication and regional analyses of the Chinese science system ” section, the existing literature on relevant
interdisciplinarity of research organizations.
It should be noted that the choice of the terms “interdisciplinarity” and “multidisciplinarity” was not intended to convey deep conceptual commitments here. In recent decades, an extensive body of literature has
Authors:Leonidas Akritidis, Dimitrios Katsaros, and Panayiotis Bozanis
identification of the new scientists and their separation from the more experienced ones. In this work we exploit some of the most sophisticated metrics that have been proposed in the literature. We also introduce a set of Topic-Sensitive extensions which render
Authors:Alireza Abbasi, Liaquat Hossain, Shahadat Uddin, and Kim J. R. Rasmussen
each actor, as widely used in similar literature, we also measure the following other quantities of collaboration networks:
Density describes the general level of linkage among the nodes in a network (Scott
that is widely used not only by Gartner but also in various other fields. However, in spite of the wide popularity of this model, the currently existing research literature has tended to neglect to demonstrate the model's relation to other theoretical
&D is found in the literature mainly at national or regional level (Alfaraz and Calvino 2004 ; Balog 1985 ; Bravo-Vinaja and Sanz-Casado 2008 ; Calvino 2006 ; Dearenas et al. 1994 ; Farahat 2002 ; Garg et al. 2006 ; Leiser et al. 2009 ; Nasir et
Google Scholar ( http://scholar.google.com/
) is the database developed by Google Inc. to provide access to the world scholarly literature. The platform use both the academic records from its main search engine
Liddle , HA , Halpin , RJ 1978 Family-therapy training and supervision literature: Comparative review . Journal of Marriage and Family Counseling 4 4 77 – 98 10.1111/j.1752-0606.1978.tb00543.x
research literature over the past 15 years (1996–2010) by applying bibliometric methods, to identify patterns and trends as well as the exchange within the community.
Materials and methods
By making use of the critical point theory, we establish some new existence criteria to guarantee that a 2nth-order nonlinear difference equation containing both advance and retardation with p-Laplacian has a nontrivial homoclinic orbit. Our conditions on the potential are rather relaxed, and some existing results in the literature are improved.