Motivation: In recent years Albania has been an object of amassing research in many subject areas, including those related to economic sciences. Nevertheless, this growing scientific output has not been mapped from the bibliometric perspective. Thus, filling the identified gap in the body of knowledge is motivation for this study.Aim: The aim of the paper is to map the conceptual structure of research output in economic sciences with the focus on Albania as an object or a context of scientific inquiry in order to identify and explore leading and emerging topics. The study is oriented to answering the following research questions: (1) What are the leading topics/streams of scientific inquiry in the field? (2) What are the most up-to-date (emerging) topics/streams in the field?Results: Analysing co-occurrence of high-frequency keywords of Scopus-indexed publications including phrase 'Albania' in their titles, keywords and abstracts leads to identification of seven thematic clusters within the research field: (1) Albania as a transition economy, (2) economic aspects of migration, (3) Western Balkans studies, (4) education and innovation, (5) regional case and comparative studies, (6) economic growth and development, and (7) democratic transition and European integration. Moreover, the analysis reveals the following up-to-date topics attracting recently increasing attention of the academia: European integration, cointegration, consumer preferences, monetary policy, Western Balkans, higher education, performance, developing countries.
Motivation: In recent years Albania has been an object of amassing research in many subject areas, including those related to economic sciences. Nevertheless, this growing scientific output has not been mapped from the bibliometric perspective. Thus, filling the identified gap in the body of knowledge is motivation for this study.Aim: The aim of the paper is to map the conceptual structure of research output in economic sciences with the focus on Albania as an object or a context of scientific inquiry in order to identify and explore leading and emerging topics. The study is oriented to answering the following research questions: (1) What are the leading topics/streams of scientific inquiry in the field? (2) What are the most up-to-date (emerging) topics/streams in the field?Results: Analysing co-occurrence of high-frequency keywords of Scopus-indexed publications including phrase 'Albania' in their titles, keywords and abstracts leads to identification of seven thematic clusters within the research field: (1) Albania as a transition economy, (2) economic aspects of migration, (3) Western Balkans studies, (4) education and innovation, (5) regional case and comparative studies, (6) economic growth and development, and (7) democratic transition and European integration. Moreover, the analysis reveals the following up-to-date topics attracting recently increasing attention of the academia: European integration, cointegration, consumer preferences, monetary policy, Western Balkans, higher education, performance, developing countries.
Scientific and grey literature on invasive alien species (IAS) is conditioned by social, economic and political priorities, editorial preferences and species and ecosystem characteristics. This leads to knowledge gaps and mismatches between scientific research interests and management needs. We reviewed the literature on IAS management in Spain found in Scopus, Web of Science, Google Scholar and Dialnet to identify key deficiencies and priority research areas. The collected literature was classified, employing features describing formal aspects and content. We used bibliometric and keyword co-occurrence network analyses to assess the relationship between features and reveal the existence of additional topics. Most of the compiled documents (n = 388) were focused on terrestrial ecosystems and inland waters, whereas marine and urban ecosystems were under-represented. The literature was largely generic and not species-specific, focusing on raising awareness and proposing changes on current regulation as prominent approaches to prevent further introductions. The compiled authors exhibited many clear publishing preferences (e.g. language or document type), but less regarding target taxa. In addition, there was a strong association between species and the different features considered, especially between the methodological approach (e.g. review, field experiment) and the primary emphasis of study (i.e. basic/theoretical, applied or interdisciplinary). This indicates that research on IAS has had a strong species-specific focus. References about terrestrial species focused mainly on vascular plants, whereas references about inland waters were mostly on fishes and the giant reed (Arundo donax), which has been managed with partial success. Animal culling and plant removal were the most frequent eradication and small-scale control treatments, whereas the documents addressing wider spatial scales were largely theoretical. Consequently, the success of described treatments was largely uncertain. Spanish invasion science ...
Scientific and grey literature on invasive alien species (IAS) is conditioned by social, economic and political priorities, editorial preferences and species and ecosystem characteristics. This leads to knowledge gaps and mismatches between scientific research interests and management needs. We reviewed the literature on IAS management in Spain found in Scopus, Web of Science, Google Scholar and Dialnet to identify key deficiencies and priority research areas. The collected literature was classified, employing features describing formal aspects and content. We used bibliometric and keyword co-occurrence network analyses to assess the relationship between features and reveal the existence of additional topics. Most of the compiled documents (n = 388) were focused on terrestrial ecosystems and inland waters, whereas marine and urban ecosystems were under-represented. The literature was largely generic and not species-specific, focusing on raising awareness and proposing changes on current regulation as prominent approaches to prevent further introductions. The compiled authors exhibited many clear publishing preferences (e.g. language or document type), but less regarding target taxa. In addition, there was a strong association between species and the different features considered, especially between the methodological approach (e.g. review, field experiment) and the primary emphasis of study (i.e. basic/theoretical, applied or interdisciplinary). This indicates that research on IAS has had a strong species-specific focus. References about terrestrial species focused mainly on vascular plants, whereas references about inland waters were mostly on fishes and the giant reed (Arundo donax), which has been managed with partial success. Animal culling and plant removal were the most frequent eradication and small-scale control treatments, whereas the documents addressing wider spatial scales were largely theoretical. Consequently, the success of described treatments was largely uncertain. Spanish invasion science ...
Scientific and grey literature on invasive alien species (IAS) is conditioned by social, economic and political priorities, editorial preferences and species and ecosystem characteristics. This leads to knowledge gaps and mismatches between scientific research interests and management needs. We reviewed the literature on IAS management in Spain found in Scopus, Web of Science, Google Scholar and Dialnet to identify key deficiencies and priority research areas. The collected literature was classified, employing features describing formal aspects and content. We used bibliometric and keyword co-occurrence network analyses to assess the relationship between features and reveal the existence of additional topics. Most of the compiled documents (n = 388) were focused on terrestrial ecosystems and inland waters, whereas marine and urban ecosystems were under-represented. The literature was largely generic and not species-specific, focusing on raising awareness and proposing changes on current regulation as prominent approaches to prevent further introductions. The compiled authors exhibited many clear publishing preferences (e.g. language or document type), but less regarding target taxa. In addition, there was a strong association between species and the different features considered, especially between the methodological approach (e.g. review, field experiment) and the primary emphasis of study (i.e. basic/theoretical, applied or interdisciplinary). This indicates that research on IAS has had a strong species-specific focus. References about terrestrial species focused mainly on vascular plants, whereas references about inland waters were mostly on fishes and the giant reed (Arundo donax), which has been managed with partial success. Animal culling and plant removal were the most frequent eradication and small-scale control treatments, whereas the documents addressing wider spatial scales were largely theoretical. Consequently, the success of described treatments was largely uncertain. Spanish invasion science research has been occasionally innovative, incorporating novel technologies (e.g. species distribution modelling) and engaging society with citizen-science approaches. However, the ratio between basic/theoretical and applied studies indicates that more applied research/management is needed, especially in inland waters and marine ecosystems. We call for increasing effort in the effective dissemination of experience in IAS management to enhance current practical knowledge, including that of schemes undertaken by public agencies.
Este artículo contiene 28 páginas, 7 figuras, 2 tablas. ; Scientific and grey literature on invasive alien species (IAS) is conditioned by social, economic and political priorities, editorial preferences and species and ecosystem characteristics. This leads to knowledge gaps and mismatches between scientific research interests and management needs. We reviewed the literature on IAS management in Spain found in Scopus, Web of Science, Google Scholar and Dialnet to identify key deficiencies and priority research areas. The collected literature was classified, employing features describing formal aspects and content. We used bibliometric and keyword co-occurrence network analyses to assess the relationship between features and reveal the existence of additional topics. Most of the compiled documents (n = 388) were focused on terrestrial ecosystems and inland waters, whereas marine and urban ecosystems were under-represented. The literature was largely generic and not species-specific, focusing on raising awareness and proposing changes on current regulation as prominent approaches to prevent further introductions. The compiled authors exhibited many clear publishing preferences (e.g. language or document type), but less regarding target taxa. In addition, there was a strong association between species and the different features considered, especially between the methodological approach (e.g. review, field experiment) and the primary emphasis of study (i.e. basic/theoretical, applied or interdisciplinary). This indicates that research on IAS has had a strong species-specific focus. References about terrestrial species focused mainly on vascular plants, whereas references about inland waters were mostly on fishes and the giant reed (Arundo donax), which has been managed with partial success. Animal culling and plant removal were the most frequent eradication and small-scale control treatments, whereas the documents addressing wider spatial scales were largely theoretical. Consequently, the success of described treatments was largely uncertain. Spanish invasion science research has been occasionally innovative, incorporating novel technologies (e.g. species distribution modelling) and engaging society with citizenscience approaches. However, the ratio between basic/theoretical and applied studies indicates that more applied research/management is needed, especially in inland waters and marine ecosystems. We call for increasing effort in the effective dissemination of experience in IAS management to enhance current practical knowledge, including that of schemes undertaken by public agencies. ; This research was funded by the Spanish Ministry of Science and Innovation (InvaNET network, RED2018‐102571‐T). Additional financial support was provided by the Spanish Ministry of Science and Innovation, Spanish State Research Agency (AEI) and European Regional Development Fund (FEDER, UE) (grants PID2020- 118550RB, PID2019-103936GB-C21, RTI2018-093504-B-I00) and the Government of Catalonia (ref. 2017 SGR 548). RMM benefitted from a postdoctoral Juan de la Cierva Fellowship from the Spanish Ministry of Science and Innovation (FJCI2016-30829). ; Peer reviewed
The distribution of species on islands -- Patterns or fantasies? -- Species co-occurrences -- The night sky effect -- Patterns in nature -- Finding the null -- What this book is about -- How this book is organized -- Diamond's assembly rules -- Robert Macarthur, 1930-1972 -- Special islands and their birds -- What is a checkerboard distribution? -- Incidence -- The theoretical context -- The cuckoo doves -- Patchy distributions -- The response of Connor and Simberloff -- The backlash -- How likely are checkerboards? -- Prior expectations -- The analysis of Vanuatu -- A technical interlude -- How to incorporate constraints into incidence matrices -- Definitions and notation -- The numbers of null matrices and the effect of constraints -- The hypergeometric distribution -- The three ecological constraints proposed by Connor and Simberloff in their studies of birds and bats on islands -- Incidence -- Why constraints? and what does "representative" mean? -- How to fill the sample null space -- Null space creation algorithms -- Creating a uniform random sample null space -- The trial-swap algorithm -- How to characterize incidence matrices -- Then you need a metric -- The metric of Connor and Simberloff -- Wright and Biehl -- Harvey et al.'s (1983) review of null models in ecology -- Stone and Roberts (1990, 1992) and Roberts and Stone -- Why ensemble metrics fail: an example -- Reanalysis and extensions -- Vanuatu and the Galapagos -- The birds of Vanuatu -- The birds of the Galapagos -- The birds of the Bismarck and Solomon islands -- The issue of superspecies -- The patterns -- Taxonomic sieving and incidence effects -- Which genera develop checkerboards? -- Caveats -- When the incidences do not overlap -- Coda -- Species along a gradient -- The herptofauna of Mount Kupe, Cameroon -- Why do the results differ from previous results? -- The second question: do species form distinct communities? -- Applications to food webs: nestedness and reciprocal specialization -- Nestedness -- Groupings of species interactions -- Coda -- Macarthur's original vision -- The patterns themselves -- The need for null hypotheses
In this paper the adequacy of the co-word method for mapping the structure of scientific inquiry is explored. Co-word analysis of both the keywords and the titles of a set of papers in `acidification research' is undertaken and the results are found to be comparable, though the keyword-derived results provide greater detail. This strongly suggests that keyword indexing doest not, as has sometimes been claimed, distort coword findings. It also points to differences between titles (which often emphasize the supposed originality of an article) and keywords (which tend to show the relationship between the paper and other publications). The paper also explores important differences between the methodological assumptions that underlie the Paris/Keele co-word clustering algorithms and the factor analysis method for creating clusters.
A total of 209 samples of various cereal crops (maize, wheat, barley, rye and oats) grown in Croatian fields during 2016 and 2017 were collected to analyze and determine the occurrence and co-occurrence of EU regulated mycotoxins in cereals (AFB1, AFB2, AFG1, AFG2, DON, FB1, FB2, ZEA, T-2, HT-2 and OTA). The analysis, performed by a validated confirmatory LC-MS/MS method based on a dilute and shoot principle, highlighted Fusarium mycotoxins as the main contaminants, often co-occurring in samples from both years (50.0% in 2016 and 33.7% in 2017). DON was found to be the most frequent mycotoxin, present in 72.5% of the 2016 samples and 32.6% of the 2017 samples, while maize proved to be the most contaminated cereal type of both years with FUM as the most abundant mycotoxins, with an average concentration of 1180 µg/kg. Moderate temperatures with periods of high humidity favored the accumulation of DON in wheat samples instead of other Fusarium mycotoxins, while similar conditions favored maize contamination with FUM. A total of 8.3% of all the 2016 harvest samples and 7.9% of the 2017 harvest samples were assessed as non-compliant, containing mycotoxins in concentrations higher than the levels set by the EU legislation for food.
Scientific and grey literature on invasive alien species (IAS) is conditioned by social, economic and political priorities, editorial preferences and species and ecosystem characteristics. This leads to knowledge gaps and mismatches between scientific research interests and management needs. We reviewed the literature on IAS management in Spain found in Scopus, Web of Science, Google Scholar and Dialnet to identify key deficiencies and priority research areas. The collected literature was classified, employing features describing formal aspects and content. We used bibliometric and keyword co-occurrence network analyses to assess the relationship between features and reveal the existence of additional topics. Most of the compiled documents (n = 388) were focused on terrestrial ecosystems and inland waters, whereas marine and urban ecosystems were under-represented. The literature was largely generic and not species-specific, focusing on raising awareness and proposing changes on current regulation as prominent approaches to prevent further introductions. The compiled authors exhibited many clear publishing preferences (e.g. language or document type), but less regarding target taxa. In addition, there was a strong association between species and the different features considered, especially between the methodological approach (e.g. review, field experiment) and the primary emphasis of study (i.e. basic/theoretical, applied or interdisciplinary). This indicates that research on IAS has had a strong species-specific focus. References about terrestrial species focused mainly on vascular plants, whereas references about inland waters were mostly on fishes and the giant reed (Arundo donax), which has been managed with partial success. Animal culling and plant removal were the most frequent eradication and small-scale control treatments, whereas the documents addressing wider spatial scales were largely theoretical. Consequently, the success of described treatments was largely uncertain. Spanish invasion science ...
We demonstrate how graph decomposition techniques can be employed for the visualization of hierarchical co-occurrence patterns between medical data items. Our research is based on Gaifman graphs (a mathematical concept introduced in Logic), on specific variants of this concept, and on existing graph decomposition notions, specifically, graph modules and the clan decomposition of so-called 2-structures. The construction of the Gaifman graphs from a dataset is based on co-occurrence, or lack of it, of items in the dataset. We may select a discretization on the edge labels to aim at one among several Gaifman graph variants. Then, the decomposition of the graph may provide us with visual information about the data co-occurrences, after which one can proceed to more traditional statistical analysis. ; Partially supported by European Research Council (ERC) under the European Union's Horizon2020 research and innovation programme, grant agreement ERC-2014-CoG 648276 (AUTAR);by grant TIN2017-89244-R from Ministerio de Economia, Industria y Competitividad, and byConacyt (México). We acknowledge unfunded recognition 2017SGR-856 (MACDA) from AGAUR(Generalitat de Catalunya). ; Peer Reviewed ; Postprint (published version)
