Some important bibliometric characteristics of chemistry journals were studied. Contrary to expectations, calculations of
impact factors asynchronized for shorter and longer periods yield similar values. A new overlap measure for journals is suggested
which is based on frequency distribution of references by journals.
Communication is essential in scientific research. Scientific papers represent the main information sources in natural sciences. A model of theManifested Communication through Publications is introduced which makes it possible to calculate indicators characteristic of bilateral information processes.Bilateral Coupling is for example the total number of non-zero cross elements in the information matrix containing references to each other's papers of the two teams.
In order to characterize the relative publication output of countries both qualitatively and quantitatively two indicators [Weighted Impact of Publications (WIP) and Relative Contribution Score (RCS)] are suggested. The RCS indicatory may reflect the contribution of countries to the world science by inhabitants.
In order to characterize the integration of countries into the world intellectual property network some indicators are offered. Percentage Patent Representation (PPR) gives the percentage share of patents granted to the inventors of a given country in the total number of patents granted to all foreign patentees. The ratio of PPR indices for two countries yields the Bilateral Patent Balance (BPB) indicator, which is characteristic of a mutual patent representation. Patent Dominancy (PD) index is the number of BPB indices higher than unity for a set of countries. PD indices can be related to GDP and growth of export values.
In the present work an attempt is made to select journal bases for some subfields in chemistry. Through the modification of the Hirst's discioline impact factor concept, theprimary information base for the selected subfields is detenained. Relating impact factors of citing and cited journals,citation strategy indicators are suggested. Determination of the mean impact factors for subfields enables the introduction ofsubfields factors that bring the impact factors of journals of various subfields on a comparavle level.
Simple relations were found between Relative Citation Rate (RCR), Relative Subfield Citedness (Rw) and Subfield Publication Strategy (PS) indicators. The Rw indicator is supposed to be more characteristic of the international scientific impact of papers than RCR using mean citation rate of journals representing the respective subfield, as standard.
In the present stage of Scientometricsindicators published are mostlyincomparable, which fact impedes the development of the field and makes the users of scientometric results mistrustful. Consequently, standardization of data, methods, indicators and their presentation is urgently needed. For instance, the time periods applied should be standardized across fields and subfields in calculating citation and publication indicators.
50 pharmaceutical patents granted to firms, residing in US, GB, DE and HU each, were surveyed and the average numbers of scientific as well as patent itemsReferenced by the inventors were calculated. The sum of impact factors of the journals referenced (Total Weighted Impact) was calculated by scientific fields. About 50–60 per cent of scientific information referred to in the patents was found to originate from Life Sciences journals. It was found that 10 per cent of the journals referenced contained 55 per cent of the papers.
Activities of research institutes of the Hungarian Academy of Sciences were assessed multidimensionally. Taking into accountgoals and tasks of the institutes,weighted scientometric indicators were suggested. The weights of the individual indexes weredistributed among the institutes by the values of their indicators. The sum of the individual weighted scores representing special aspects
of the total activity yields aGeneral Performance Index (GPI) which, together with a thorough peer review, may be used for distributing grants.