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This study explores the societal embeddedness of the websites of research projects. It combines two aims: characterizing research projects based on their weblink relationships, and discovering external societal actors that relate to the projects via weblinks. The study was based on a set of 121 EU-funded research projects and their websites. Domains referring to the websites of the research projects were collected and used in visualizations of co-link relationships. These analyses revealed clusters of topical similarity among the research projects as well as among referring entities. Furthermore, a first step into unveiling potentially relevant stakeholders around research projects was made. Weblink analysis is discussed as an insightful tool for monitoring the internal and external linkages of research projects, representing a relevant application of webometric methods., Research in progress paper accepted for oral presentation at the 18th International Conference on Scientometrics & Informetrics (2021)

Various data sharing platforms are being developed to enhance the sharing of cohort data by addressing the fragmented state of data storage and access systems. However, policy challenges in several domains remain unresolved. The euCanSHare workshop was organized to identify and discuss these challenges and to set the future research agenda. Concerns over the multiplicity and long-term sustainability of platforms, lack of resources, access of commercial parties to medical data, credit and recognition mechanisms in academia and the organization of data access committees are outlined. Within these areas, solutions need to be devised to ensure an optimal functioning of platforms.

In this study we develop a model to predict the probability of performing specific contribution roles based on bibliometric data to identify the contribution of each author in this dataset for all publications in their research career. Based on these predictions we profile career trajectories. We use as a seed dataset, contribution data from 71,083 articles and reviews from PLOS journals published between 2006 and 2013 from Medical and Health Sciences. These contribution types are the following: 1) wrote the manuscript, 2) conceived the experiments, 3) performed the experiments, 4) analysed the data, 5) contributed with tools, 6) approved the final version, and 7) other. A total of 348,710 unique disambiguated authors are identified using an author name disambiguation algorithm (14). We consider the following bibliometric variables to predict contribution types: document type, author order, academic age (15) at the time of publication, total number of papers published at the time of publication, total number of author, total number of countries and total number of institutions authoring the publication. We employ a data-driven approach to construct a Bayesian network (16) which graphically represents the relation between the bibliometric and contribution variables and also entails the joint probability distribution that accounts for the existing dependencies between the model’s variables. Then we segregate our set of researchers by four career stages: junior (

As bibliographic reference managers like Mendeley made their data openly available, it became possible to track where in the world research was being saved from. This data offered the opportunity to better understand how research circulates at a global scale with measures that go beyond citations. This paper explores this circulation by studying fluctuations in rankings between countries when they are based on mean normalized citation scores (MNCS) or on mean normalized Mendeley readership scores (MNRS). Results show that both indicators are moderately correlated at the country level, but that countries from the Global South (namely African and South American countries) perform better when ranked by Mendeley readership than by citations. In addition, publications from South America and Africa tend to have a lower citation impact compared to those from Europe and North America, even when compared with publications that have the same number of readers. These results suggest that the indicator chosen (i.e., citations or Mendeley readers) creates different (dis)advantages among scholarly actors (e.g. countries, research organizations, journals, etc.). It also hints at the need to establish evaluation frameworks that consider that different metrics play different roles across institutional and geographical boundaries. We conclude by proposing further ways of exploring these metrics.

This study advances insights into the distribution of tweets captured by Altmetric.com in terms of the dates tweeting activity ensues. The following primary research question is investigated: When do tweeters tweet about scientific publications? For this work,the dataset in this study contained 25.2 million tweets, which were tweeted from January 2012 through December 2016. Those tweets referred to 3.3 million distinct scientific publications, which were published from 2012 onwards. In this work, tweet volume (TV)—tweets mentioning scientific publications in a specific time unit—and the publication volume (PV)—volume of distinct publications tweeted in a specific time unit—were calculated. The TV/PV ratio was calculated in order to measure the tweeting intensity in a given time unit. To observe differences in timely patterns, a heterogeneous selection of countries were selected, which included three Western European countries (the United Kingdom, the Netherlands, and Spain), a set of North African states (Morocco, Algeria, Tunisia, Libya and Egypt), as well as a representative of the Southern Hemisphere (South Africa). Results highlight the relevance of considering time dynamics of activity when studying social media metrics stemming from sources with a strong cultural or geographical component, as in the case of Twitter.

This article presents an exploratory analysis of which disciplines acknowledge more financial support (through funding acknowledgments - FA) and those whose publications attract more attention on Twitter. We argue that such combined approach can provide interesting information for both funding bodies and policy makers about how funding activities and the attention in social media of scientific research relate to each other.

Open access mandates are setting standards on how to publish open access, as well as indicate the timeframe in which these goals are supposed to be reached. Parallel to the OA development, taken up both nationally as well supra-nationally, European and thus also Dutch academics are confronted with an increasing pressure to cooperate scientifically with European partners, via the consortia obligations expressed via for example EU funding instruments such as those under the more recent Framework programmes. So we notice for many years an increasing tendency to internationally collaborate for European science. The results presented in this study are part of a larger analysis in which CWTS supports the University and Royal Library system (UKB) in the Netherlands in their negotiations with the publishing industry, oriented towards the so called Big Deals. In this study, the question arose to what extent Dutch output was directly under the Big deals, that mean, a situation in which any publication with a Netherlands based author as corresponding author was involved, would get OA format published. The main research question here is: to what extent is the Dutch OA mandate hindered by EU policies to increasingly work together internationally for EU scientists (for example via EU Framework programmes, such as Horizon2020) ?

The country of authors of 5,9 million Web of Science (WoS) publications with DOI from the years 2012 to 2015 have been compared with the country of Twitter users tweeting these WoS publications in order to study the main scholarly users of Twitter across 10 different countries. For this purpose, the visibility of country’s publications in the WoS and geographical distribution of Twitter users tweeting WoS publications have been analysed. The aim is to study how do they differ and what are their preference in tweeting their own vs. other country’s publication. The findings show that in general, US and UK with the highest proportion of outputs in the WoS, are among the main users of Twitter as well. Moreover, except for US, users tweet publications affiliated to other country more than those from their own country. Also, similar to WoS, it seems that altmetric providers are not free of international biases in their coverage and collection of metrics. Finally, various possible reasons on why publications from some countries attract more Twitter users than others have been discussed.

This research deals with investigating consistency of data across three altmetrics providers or aggregators: Altmetric.com, Mendeley and the Open Source software Lagotto (used by PLOS, CrossRef and others). The aim of this study is to explore if metrics for a same set of publications are consistent across them and if not, what are possible reasons that explain these differences. By consistency we mean having (reasonably) the same score for the same DOI per source across different altmetrics providers/aggregators. For a proper development of the altmetric research and practice, it is critical to understand any potential similarity or difference in metrics across different altmetric aggregators. For this purpose, a random sample of 30,000 Crossref (15,000) and WoS (15,000) DOIs from 2013 has been considered. The data collection has been done at the same date/time on July 23 2015 starting at 2 PM CEST using the Mendeley REST API, Altmetric.com dump file and the Lagotto open source application. Similar sources and metrics across these 3 providers have been analyzed and compared (Facebook, Twitter, Mendeley, CiteULike and Reddit).

In this paper an analysis of the presence and possibilities of altmetrics for bibliometric and performance analysis is carried out. Using the web based tool Impact Story, we have collected metrics for 20,000 random publications from the Web of Science. We studied the presence and frequency of altmetrics in the set of publications, across fields, document types and also through the years. The main result of the study is that less than 50% of the publications have some kind of altmetrics. The source that provides most metrics is Mendeley, with metrics on readerships for around 37% of all the publications studied. Other sources only provide marginal information. Possibilities and limitations of these indicators are discussed and future research lines are outlined. We also assessed the accuracy of the data retrieved through Impact Story by focusing on the analysis of the accuracy of data from Mendeley; in a follow up study, the accuracy and validity of other data sources not included here will be assessed., This paper presented at the 14th International Conference on Scientometrics and Informetrics (ISSI), 16-19 July 2013, University of Vienna, Austria

The main focus of this paper is to investigate the impact of publications read (saved) by the different users in Mendeley in order to explore the extent to which their readership counts correlate with their citation indicators. The potential of filtering highly cited papers by Mendeley readerships and its different users have been also explored. For the analysis of the users, we have considered the information of the top three Mendeley ‘users’ reported by the Mendeley. Our results show that publications with Mendeley readerships tend to have higher citation and journal citation scores than publications without readerships. ‘Biomedical & health sciences’ and ‘Mathematics and computer science’ are the fields with respectively the most and the least readership activity in Mendeley. PhD students have the highest density of readerships per publication and Lecturers and Librarians have the lowest across all the different fields. Our precision-recall analysis indicates that in general, for publications with at least one reader in Mendeley, the capacity of readerships of filtering highly cited publications is better than (or at least as good as) Journal Citation Scores. We discuss the important limitation of Mendeley of only reporting the top three readers and not all of them in the potential development of indicators based on Mendeley and its users.

An extensive analysis of the presence of different altmetric indicators provided by Altmetric.com across scientific fields is presented, particularly focusing on their relationship with citations. Our results confirm that the presence and density of social media altmetric counts are still very low and not very frequent among scientific publications, with 15%-24% of the publications presenting some altmetric activity and concentrating in the most recent publications, although their presence is increasing over time. Publications from the social sciences, humanities and the medical and life sciences show the highest presence of altmetrics, indicating their potential value and interest for these fields. The analysis of the relationships between altmetrics and citations confirms previous claims of positive correlations but relatively weak, thus supporting the idea that altmetrics do not reflect the same concept of impact as citations. Also, altmetric counts do not always present a better filtering of highly cited publications than journal citation scores. Altmetrics scores (particularly mentions in blogs) are able to identify highly cited publications with higher levels of precision than journal citation scores (JCS), but they have a lower level of recall. The value of altmetrics as a complementary tool of citation analysis is highlighted, although more research is suggested to disentangle the potential meaning and value of altmetric indicators for research evaluation.

The online reference manager tool Mendeley (http://www.mendeley.com/) is one of the most promising tools for altmetrics research (Li, Thelwall and Giustini, 2011;Wouters & Costas, 2012) and it has been already used in other previous studies, for example in Library and Information Science Journals (Bar-Ilan et al., 2012b), for Nature and Science journals (Li, Thelwall and Giustini, 2012); for PLoS ONE publications (Priem, Piwowar & Hemminger, 2012); and for a sample of all WOS disciplines (Zahedi, Costas & Wouters; 2013). The concept of Altmetrics was introduced by Priem et al. (2010) and it has been frequently referred to as an alternative way of measuring broader research impacts (other than citation) and ‘real time’ impact in social web via different tools. Most of studies investigated how altmetrics capture different type of impact compare to citations (some of them mentioned above); while in others the focus has been on how altmetrics can be used as predictor of citations. For example, in case of F1000, found that recommendations have a relatively lower predictive power in indicating high citedness as compared to journal citation scores (Waltman & Costas, 2013), moreover, correlation between F1000 labels and citation impact were not statistically significant in most cases (Mohammadi & Thelwall, 2013); also weak correlation among users’ tag and bookmarks as an indicator of journal usage and perception and citations observed for physical journals (Haustein, & Siebenlist, 2011). In the case of Mendeley, the correlation with citations has been observed to be higher (Bar-Ilan et al., 2012a; Bar-Ilan et al., 2012b; Priem, Piwowar & Hemminger, 2012; Li, Thelwall and Giustini, 2012; Li & Thelwall, 2012; Zahedi, Costas & Wouters; 2013), however, so far the relationship of the different types of readers with the impact of the publications has not yet been explored. For this reason, in this study, we present an exploratory analysis of the patterns of reading of the different types of users in Mendeley and we study their relationship with citations. Thus, our main objective is to know if there are different patterns in terms of impact depending on the different ‘career stages’, ‘disciplines’ and ‘countries’ of the readers in Mendeley. In the case of finding different types of impact and reading patterns among Mendeley readers, this could open the door to detect different types of impact (e.g. education impact or professional impact) and even to introduce the possibility of considering the different users as potential predicting elements of citations. Methodology & preliminary results: In this research we have studied two random samples of publications from the Web of Science: the first one containing 20,000 publications published between 2005 and 2011 from all disciplines, and the second sample include 200,000 publications published between 2011 and 2012 also from all disciplines. Both gathered during March and April 2013 via the Mendeley API and using the DOI of the publications as the linking element. For the two samples we have also calculated standard bibliometric indicators (Waltman et al., 2011). For the analysis of the users we have considered the information of the top three ‘career stage users’, ‘countries’ and ‘disciplines’ of the users. We acknowledge the limitation of counting only with the top three and we discuss this in the paper. Some preliminary results show that PhD students tend to read papers with higher impact than other users and also that they read more recent papers. Further research will be done in order to explore other potential factors (e.g. the higher presence of PhD students among the users of Mendeley) that can influence this observation.

1 tabla, 1 gráfica., [EN] Hylobius abietis (L.) is the most economically important pest of coniferous seedlings in clear-cut areas in Europe. Adult weevils cause extensive damage by feeding on the bark of newly planted seedlings on clear felled coniferous stands. During the last 20 years, several studies have tried to find an effective method for trapping H. abietis in north Europe, but there is no information for the warmer countries of Southern Europe. In this study, alpha-pinene and turpentine in combination with ethanol as attractants, and pine bark or pine branches as trap substrate were used to trap alive H. abietis in NW Spain. The combination of alpha-pinene and ethanol obtained nearly 7-fold greater captures than the control. However, there were no significant differences between alpha-pinene and turpentine. The catches were also significantly affected by the substrate used in the traps. Fresh pine bark impregnated with turpentine and ethanol achieved nearly 11-fold greater captures than branches as substrate. The use of pine bark plus turpentine (40 mL) and ethanol (20 mL) appeared as an effective and cheap alternative to capture H. abietis in Spain., [ES] Hylobius abietis (L.) es la plaga con mayor repercusión económica en plántulas de las repoblaciones forestales de coníferas en áreas recién cortadas en Europa. Los adultos causan daños importantes alimentándose de la corteza de las plantas jóvenes. Durante los últimos 20 años varios estudios han tratado de encontrar un método eficaz de captura de este insecto en el norte de Europa, sin embargo no existe ninguna información de este tipo en el sur de Europa. En este estudio empleamos alfa-pineno y esencia de trementina en combinación con etanol como atrayentes, y corteza o ramas de pino como sustrato de las trampas. Como era esperado, se encontraron diferencias significativas en las capturas de H. abietis entre atrayentes. La combinación de alfa-pineno y etanol mostró cerca de 7 veces más capturas que el control. Sin embargo, no hubo diferencias significativas entre el uso de alfa-pineno y de esencia de trementina como atrayentes. También se observaron diferencias significativas en las capturas de H. abietis entre los sustratos. Las trampas de corteza de pino impregnada con una gran cantidad de trementina y etanol mostraron cerca de 11 veces más capturas que las trampas con ramas de pino impregnadas de la misma manera. Por lo tanto, el uso de corteza de pino y esencia de trementina (40 mL) y etanol (20 mL) se presenta como una buena y barata alternativa para la captura de ejemplares vivos de H. abietis en España., Projects INIA RTA05-173 and Xunta de Galicia PGIDIT06PXIC502155PR.

Hylobius abietis (L.) is the most economically important pest of coniferous seedlings in clear-cut areas in Europe. Adult weevils cause extensive damage by feeding on the bark of newly planted seedlings on clear felled coniferous stands. During the last 20 years, several studies have tried to find an effective method for trapping H. abietis in north Europe, but there is no information for the warmer countries of southern Europe. In this study, α-pinene and turpentine in combination with ethanol as attractants, and pine bark or pine branches as trap substrate were used to trap alive H. abietis in NW Spain. The combination of α-pinene and ethanol obtained nearly 7-fold greater captures than the control. However, there were no significant differences between α-pinene and turpentine. The catches were also significantly affected by the substrate used in the traps. Fresh pine bark impregnated with turpentine and ethanol achieved nearly 11-fold greater captures than branches as substrate. The use of pine bark plus turpentine (40 mL) and ethanol (20 mL) appeared as an effective and cheap alternative to capture H. abietis in Spain., Hylobius abietis (L.) es la plaga con mayor repercusión económica en plántulas de las repoblaciones forestales de coníferas en áreas recién cortadas en Europa. Los adultos causan daños importantes alimentándose de la corteza de las plantas jóvenes. Durante los últimos 20 años varios estudios han tratado de encontrar un método eficaz de captura de este insecto en el norte de Europa, sin embargo no existe ninguna información de este tipo en el sur de Europa. En este estudio empleamos α-pineno y esencia de trementina en combinación con etanol como atrayentes, y corteza o ramas de pino como sustrato de las trampas. Como era esperado, se encontraron diferencias significativas en las capturas de H. abietis entre atrayentes. La combinación de α-pineno y etanol mostró cerca de 7 veces más capturas que el control. Sin embargo, no hubo diferencias significativas entre el uso de α-pineno y de esencia de trementina como atrayentes. También se observaron diferencias significativas en las capturas de H. abietis entre los sustratos. Las trampas de corteza de pino impregnada con una gran cantidad de trementina y etanol mostraron cerca de 11 veces más capturas que las trampas con ramas de pino impregnadas de la misma manera. Por lo tanto, el uso de corteza de pino y esencia de trementina (40 mL) y etanol (20 mL) se presenta como una buena y barata alternativa para la captura de ejemplares vivos de H. abietis en España.

This paper presents the results of growth obtained in thirty-four inventory plots instaled in comercial Douglas fir plantations fifteen to thirty years old in Asturias and Galicia (Northwest of Spain). One and two entrances cubage functions are fitted. The values of growth were compared with the french and british yield tables, resulting quite adequate results, including plantations with no attention to the provenance choice., Se presentan los resultados de crecimiento obtenidos en 34 parcelas de inventario instaladas en repoblaciones de abeto Douglas de 15 a 30 años de edad en Asturias y Galicia. Se han ajustado ecuaciones de cubicación de una y dos entradas y se han obtenido las principales variables dasométricas de masa. Los valores de crecimiento se comparan con las tablas de producción clásicas de Francia y Gran Bretaña, resultando valores muy aceptables, a pesar de la escasa atención que se ha prestado al empleo de las procedencias más adecuadas.

In the Puerto Rico Heart Health Program, a prospective epidemiologic study, 9824 men living in defined urban and rural areas of Puerto Rico have been followed for approximately eight years. Periodic examinations have been used to assess potential cardiovascular risk factors and to monitor coronary heart disease events. Although the emphasis of the study has been oriented to cardiovascular disease, all causes of death have been closely monitored. During the observation period, 179 deaths from cancer have occurred in the age group 45--64 years. The distribution of cancer deaths varies from that of the mainland, with a greater percentage being oral, pharyngeal and stomach, and a lesser frequency being lung. Serum cholesterol measured at the first examination in 1965 was found to vary inversely with subsequent mortality from cancer. This trend was significant overall for the rural area and in the age group 45--54 years in the urban area. Multivariate analysis with other covariables did not eliminate the cholesterol relationship in the rural men, although relative weight, ventricular rate, hematocrit and cigarette smoking made independent contributions in certain age groups in both locations. The association between serum cholesterol and cancer mortality in the rural area and in the young urban area suggests that further investigation is needed to determine whether the relationship is causal, a secondary association to some other unidentified set of primary factors, or merely a physiological reaction to early and undiagnosed stages of the cancer process.

Sodium salicylamide in doses of 650 and 1,300 mg was evaluated in two separate sleep laboratory drug evaluation studies of insomniac patients. Each study utilized a standard protocol of 10 consecutive laboratory nights consisting of four placebo nights for adaptation and baseline, three drug nights for short-term drug administration and three placebo nights for evaluating withdrawal. Neither dose had a clear-cut hypnotic effect in inducing or maintaining sleep. Sleep stages were not effected by drug administration or drug withdrawal. Both the objective findings and subjective estimates suggest that the 1,300-mg dose may have a slight sedative effect. However, when salicylamide is used as an ingredient in over-the-counter preparations, the usual dose is only 200-400 mg.

The relationship of alcohol consumption, measured in 1965-1968 by the 24-hour recall method, to incident coronary heart disease morbidity at eight years and mortality at 12 years of follow-up was investigated in a cohort of 9150 Puerto Rican males 35-79 years of age. After adjustment for age, cigarettes, exercise, urban/rural status, and income, there was clear evidence of a "U-shaped" relationship between alcohol and total mortality, and also the suggestion of a "J-shaped" relationship for angina pectoris, nonfatal myocardial infarction, and nonsudden coronary heart disease death. There was no association of alcohol with sudden cardiac death. The adjusted odds ratio for drinkers versus nondrinkers was 0.6 for angina pectoris (p less than 0.05), 0.7 for nonfatal myocardial infarction (p less than 0.1), and 0.7 for nonsudden coronary heart disease death (p less than 0.05). The inverse association of alcohol consumption to nonsudden coronary heart disease death was found to be dependent on age and income: the adjusted odds ratio for subjects under age 60 (0.4) or over the median income (0.3) strongly favored drinkers, while there was no evidence for a "protective effect" of alcohol consumption in the older and poorer segments of the population. It is concluded that available evidence does not justify the assertion that the inverse association between moderate alcohol intake and coronary heart disease risk is a causal one.

This report explores coronary heart disease (CHD) risk factors and the incidence of new CHD events developing over a two and one-half year period in 8793 urban and rural Puerto Rican men aged 45--64 years. Rural men had a lower average blood pressure, serum cholesterol, blood sugar, heart rate and relative weight than urban men. They were more active physically and although more of them smoked, they smoked fewer cigarettes than urban dwellers. The age-adjusted CHD incidence rate for urban men was 1.5 times that of rural men. Among rural areas the most rural had the lowest incidence. Among urban areas there was a suggestive trend of increasing incidence with degree of urbanization. Differences in conventional risk factors, while substantial, do not entirely explain the modest differences in incidence. There also appeared to be a relation with geographic mobility. Urban men who had always lived in the same area had an incidence rate as low as that for rural men whereas recent rural migrants to urban areas had the highest rates of all.

A study of all deaths in the 20–64 age group in the San Juan Metropolitan Area was carried out for the period of 1 May 1963 to 31 October 1963. The methodology used is reported. Of all deaths 52.7 per cent had an autopsy. The revised figures for CHD deaths still reveal a lower age specific mortality rate in the San Juan Metropolitan Area as compared to the rates reported in the United States. The need of well controlled prospective epidemiological studies in different places of the world is emphasized.