J. Sylvan Katz

Ergonic Resources LTD

The focus of this paper is the question “Can scale-invariant properties of collaborative research activities of a complex innovation system be quantified, modeled and used to inform decision makers about the effect that cooperation has on the impact of published peer-reviewed research?” Over the past few decades cooperative research activities have...

The focus of this paper is the question “Can scale-invariant properties of collaborative research activities of a complex innovation system be quantified, modeled and used to inform decision makers about the effect that cooperation has on the impact of published peer-reviewed research?” Over the past few decades cooperative research activities have...

The aim of this paper is to extend the conversation about the correlation betweencollaboration and citation impact in articles in Information Science & Library Sciencejournals by analyzing this correlation’s behavior using a power scaling law approach. 28,131 articles that received 215,693 citations were analyzed. The number of these articlesthat w...

The aim of this paper is to explore the power-law relationship between thedegree centrality of countries and their citation-based performance in ManagementInformation Systems research. We analyzed 27,662 articles that received 127,974 citations.The distribution of the citation-based performance follows a power law with exponent of-2.46 ± 0.05. The...

The aim of this paper is to extend our knowledge about the power-law relationship between citation-based performance and coauthorship patterns in papers in the natural sciences. We analyzed 829,924 articles that received 16,490,346 citations. The number of articles published through coauthorship accounts for 89%. The citation-based performance and...

Innovation systems are sometimes referred to as complex systems, something that is intuitively understood but poorly defined. A complex system dynamically evolves in non-linear ways giving it unique properties that distinguish it from other systems. In particular, a common signature of complex systems is scale-invariant emergent properties. A scale...

The aim of this paper is to extend our knowledge about the power-law relationship between citation-based performance and collaboration patterns for papers by analyzing its behavior at the level of a national science system. We analyzed 3012 Cuban articles on Natural Sciences that received 17,295 citations. The number of articles published through c...

The aim of this paper is to extend our knowledge about the power-law relationship between citation-based performance and collaboration patterns for papers of the Natural Sciences domain. We analyzed 829,924 articles that received 16,490,346 citations. The number of articles published through collaboration account for 89%. The citation-based perform...

Innovation systems are sometimes referred to as complex systems, something that is intuitively understood but poorly defined. A complex system dynamically evolves in non-linear ways giving it unique properties that distinguish it from other systems. In particular, a common signature of complex systems is scale-invariant emergent properties. A scale...

The objective of this article is to determine if academic collaboration is associated with the citation-based per- formance of articles that are published in management journals. We analyzed 127,812 articles published between 1988 and 2013 in 173 journals on the ISI Web of Science in the “management” category. Collaboration occurred in approximatel...

Innovation systems are sometimes referred to as complex systems, something that is intuitively understood but poorly defined. A complex system dynamically evolves in non-linear ways giving it unique properties that distinguish it from other systems. In particular, a common signature of complex systems is scale-invariant emergent properties. A scale...

This paper presents proof that Google Scholar (GS) can construct documentary sets relevant for evaluating researchers' works. Nobelists in economics were the researchers under analysis, and two types of tests of the GS cites to their works were performed: distributional and semantic. Distributional tests found that the GS cites to the laureates' wo...

Science, Technology and Innovation (STI) policy is partially informed by evidence-based measures. Many traditional measures are derived from population averages whose validity assumes adherence to the Central Limit Theorem. When a characteristic of an innovation system is represented by a complex network (i.e. a network with a power law degree dist...

The tension between equity and excellence is fundamental in science policy. This tension might appear to be resolved through the use of merit-based evaluation as a criterion for research funding. This is not the case. Merit-based decision making alone is insufficient because of inequality aversion, a fundamental tendency of people to avoid extremel...

This paper uses scale-independent indicators to explore the Chinese national and regional innovation systems during economic transition. Our perception of an innovation system is frequently informed by conventional indicators based on linear assumptions while actually innovation systems may behave differently. Scale-independent indicators character...

Atlanta Conference on Science and Innovation Policy 2009 This presentation was part of the session : Policy Actors and Relationships In this paper we analyze an unacknowledged tension in decision making about the distribution of resources for research and innovation. There is tension because while decision makers accept that there is inequality in...

The Web and innovation systems are interacting complex systems that impact each other. Web indicators used to inform decision-makers about the impact they are having on each must be reproducible and relevant. Web metrics research is young and best-practice methodologies for producing robust indicators are evolving. This study describes a methodolog...

Performance indicators such as national wealth (GDP per capita), R&D intensity (GERD/GDP) and scientific impact (citations/paper) are used to compare innovation systems. These indicators are derived from the ratio of primary measures such as population, GDP, GERD and papers. Frequently they are used to rank members of an innovation system and to in...

The Web and innovation systems are interacting complex systems that impact each other. Web indicators used to inform decision-makers about the impact they are having on each must be reproducible and relevant. Web metrics research is young and best-practice methodologies for producing robust indicators are evolving. This study describes a methodolog...

This paper demonstrates that some conventional indicators used in research evaluation may fail to account for the non-linearity between size of institution and performance. This can result in an over- or under-estimation of the research performance of both large and small institutions and nations. This paper shows that a power law relationship exis...

this report that the conventional impact indicator (citations/paper) gives a distorted

Advanced scientometric tools are moving from the realm of the privileged few with access to mainframe and minicomputers to the desktop of researchers equipped with personal computers. This shift is not only due to the decreasing cost and technological advances in PCs but the ready availability of a powerful multitasking operating system, a versatil...

This paper demonstrates that some conventional indicators used in research evaluation may fail to account for the non-linearity between size of institution and performance. This can result in an over- or under-estimation of the research performance of both large and small institutions and nations. This paper shows that a power law relationship exis...

In a previous study, we showed that the 1992 men's world record running times in the 100 m to 200 km could be represented accurately by the equation T = cDn, where T is the calculated record time for distance D, and c and n are positive constants. Here, we extend that to cover the years 1925-65 at 10-year intervals and 1970-95 in 5-year intervals f...

A system with a self-similar property is scale-independent and statistically exhibits that property at all levels of observation. In addition, a power law describes the distribution of a scale-independent property. Many investigators have observed social activities and structures, particularly in the science system, that are best described by a pow...

A system with a self-similar property is scale-independent and statistically exhibits that property at all levels of observation. In addition, a power law describes the distribution of a scale-independent property. Many investigators have observed social activities and structures, particularly in the science system, that are best described by a pow...

Scientific publications in the peer-reviewed open literature are a major output of research and a key mechanism in the dissemination of knowledge. This report examines the publication record of selected subject categories with strong links with the environmental sciences in the Institute for Scientific Information database. UK publications and cita...

Interest in collaboration is increasing in policy circles. There are numerous international and national programs to encourage collaboration, for example, between university and industry researchers. However, little is know about the way in which collaboration changes the impact of a research publication. This paper explores how the impact (average...

Contrairement à une idée reçue, publier n'est pas une activité annexe pour l'industrie pharmaceutique. Il semble, en fait, que les publications prennent dorénavant une place cruciale dans ce secteur et qu'elles permettent de faire passer différents messages en direction des scientifiques, des investisseurs et des concurrents.

Although there have been many previous studies of research collaboration, comparatively little attention has been given to the concept of ‘collaboration’ or to the adequacy of attempting to measure it through co-authorship. In this paper, we distinguish between collaboration at different levels and show that inter-institutional and international co...

[fre] Pour mieux comprendre la nature des interactions entre science et technologie, il est important d'analyser les réseaux à travers lesquels circulent les compétences et les connaissances tacites, les matériaux et les objets. Les réseaux informels qui organisent les échanges de connaissance existent hors du marché et à l'extérieur des firmes. Ce...

Do researchers produce scientific and technical knowledge differently than they did ten years ago? What will scientific research look like ten years from now? Addressing such questions means looking at science from a dynamic systems perspective. Two recent books about the social system of science, by Ziman and by Gibbons, Limoges, Nowotny, Schwartz...

Using co-authored scientific papers as indicators of research collaboration the pattern of research linkages in the UK during the 1980s is analysed. All sectors collaborate with each other at a rate proportional to publishing size to a first approximation. However, there are deviations from this pattern. Analysing these deviations, two groups of se...

Systemic analyses of national research systems are now within the reach of bibliometricians. By systemic we mean comprehensive, time series, institutionally based, sectoral level analyses of national research output. This paper describes such an analysis for the UK, a system comprising 8% of world scientific output. The paper analyses publishing si...

Bibliometric standards are essential for comparative research. However, these standards can not be set by committee but must evolve through an on-going debate. Perhaps, the Scientometric community needs a refereed forum more dedicated to methodological issues than policy matters in which the standards debate can proceed in a focused and professiona...

The Bibliometric Evaluation of Sectoral Scientific Trends project analysed, at the sectoral level, 11 years of UK scientific publications recorded in Science Citation Index. The portrait that emerged was that of a dynamic, diverse and adaptive UK science base. In the next century British scientific research will be more applied, more interdisciplin...

Many systems in nature and society have a power‐law relationship (yxn = constant) between pairs of variables that do not seem to have any obvious functional dependence. Such relationships result in a straight line with slope n, on a log‐log plot of the two variables. Examples of these straight‐line plots have appeared in the literature for more tha...

Geography, economic, socio-political and language are considered to be factors that effect the level of research collaboration. However, to-date no technique has been developed to isolate the effect of geographical proximity from the other factors. This paper presents a methodology for specifically examining geographical effects on intra-national s...

The human body involves the complex interaction between many feedback systems. This is certainly indicative that we are basically a nonlinear organism. Recent developments in the understanding of nonlinear systems suggest that fractal (power law) relationships may be the rule, not the exception. In this article it is shown that the performance of m...

The levels of the NADP-specific malic enzyme in Fusarium oxysporum are controlled by both the carbon and nitrogen sources in which the cells are grown. The enzyme is not induced by malate; maximum activity is obtained when the mycelium is grown on sucrose or ethanol. With ammonium sulfate as the nitrogen source, one enzyme-activity peak is obtained...

Thesis (Ph. D.)--University of Sussex, 1992.