In recent years, revealed comparative advantage (RCA) index has been widely considered by researchers in all fields of science. This index, which was introduced by Ballassa, is an appropriate indicator for calculating the relative advantage of a country in production of a particular product or scientific specialization in different countries. Nevertheless, due to the nature of bibliometric data such as the number of documents and citations, there are often minor limitations in the calculation of RCA in scientometrics. This note seeks to outline these limitations.
PurposeThe goal of this study was to investigate the co-citation of information security patents in the United States Patent and Trademark Office (USPTO) database.Design/methodology/approachThis research is a scientometrics study that has been conducted using the co-citation analysis. The statistical population of the present study includes all patents of information security filed in the USPTO database from 1971 to 2015. As a result of this search, 30,736 patents were retrieved. In this investigation, UCINET software and its complementary package (NetDraw) were employed to plot scientific maps.FindingsThe findings of this study indicated an upward trend of patents in the field of information security between 1971 and 2015. The “California State” has the top world rank in information security inventions, followed by “Japan” and the “Washington State.” “VAN WIE, DAVID M” is the most cited inventor in the field of information security. The analysis of inventors' co-citation data indicated that “ADAMS, NEIL- LITTLE” and “HERBERT ANTHONY” had the highest co-citation rates with each other and were ranked first. The survey of high-citation inventors based on centrality indices indicated that “LEACH, PAUL J” graded first in degree centrality, “BENALOH, JOSH D” in betweenness centrality and “BENALOH, JOSH D” in closeness centrality.Originality/valueThe co-citation analysis of patents can show the most important patents and the relationships between them. Such analyses can be useful for large-scale policymaking or identification of existing gaps and attempting to address them.
Background: Considering the importance of information literacy in achieving well-documented and reliable information, it is evident that nurses must achieve a high level of information literacy through evidence-based performance. With regards to this, the present study was conducted to determine the association between information literacy and evidence-based practice. Methods: The present research was a descriptive-correlation study. The subjects of the study were 244 nurses working at critical care units of Tehran University of Medical Sciences hospitals. The tool used comprised of three parts: demographic information, information literacy, and evidence-based practice. The questionnaires were completed through the self-report method, and the data obtained were analyzed using the SPSS software 16. Results: The results of the study indicated that scores of information literacy and evidence-based practice were 78.72 ± 16.64 (of 170) and 102.17 ± 20.40 (of 130), respectively. Also, a significant and direct correlation was observed between the researched subjects' information literacy and evidence-based practice (r = 0.596, P < 0.001). Regression analysis showed that information literacy is a predictor for evidence-based practice in nurses (R 2 = 0.4, P < 0.001). Conclusion: The findings showed that the subjects' level of information literacy and evidence-based practice is not desirable and can only be considered average. Thus, it can be concluded that through improvement of nurses' information literacy, who are working at hospitals' critical care units, one can improve the attitude towards and acceptance of evidence-based practice. This will improve nurses' clinical practice and will eventually lead to an improvement in community health.
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