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The general aim of this work is to present comunicacioninvisible.net, a subject gateway for film studies designed specifically for research, education and virtual learning within the professional and academic community. It describes, classifies and provides access to open content databases in film studies available on the Web, placing specific emphasis on the quality of their content, accessibility and usability. A survey applied to researchers, teachers and professionals in communication and film studies has been performed for the suitable selection of the databases. El propósito general de este trabajo es presentar comunicacioninvisible.net, un directorio temático especializado (DTE) en el campo de los estudios fílmicos. Diseñado específicamente para la investigación, enseñanza y aprendizaje virtual de la comunidad académica y profesional, describe, clasifica y proporciona acceso a la consulta de bases de datos de contenido abierto disponibles en la web, considerando especialmente la calidad de su contenido, accesibilidad y usabilidad. Para la selección adecuada de los contenidos se ha realizado un cuestionario dirigido a docentes, investigadores y profesionales de la comunicación audiovisual y cinematografía.

Purpose - The purpose of this article is to provide a critical review of Bergman's study on the deep web. In addition, this study brings a new concept into the discussion, the academic invisible web (AIW). The paper defines the academic invisible web as consisting of all databases and collections relevant to academia but not searchable by the general-purpose internet search engines. Indexing this part of the invisible web is central to scientific search engines. This paper provides an overview of approaches followed thus far.Design methodology approach - Provides a discussion of measures and calculations, estimation based on informetric laws. Also gives a literature review on approaches for uncovering information from the invisible web.Findings - Bergman's size estimate of the invisible web is highly questionable. This paper demonstrates some major errors in the conceptual design of the Bergman paper. A new (raw) size estimate is given.Research limitations implications - The precision of this estimate is limited due to a small sample size and lack of reliable data.Practical implications - This study can show that no single library alone will be able to index the academic invisible web. The study suggests a collaboration to accomplish this task.Originality value - Provides library managers and those interested in developing academic search engines with data on the size and attributes of the academic invisible web.

Se presenta Comunicación invisible.net, un directorio temático especializado en el campo de los estudios fílmicos. Diseñado específicamente para la investigación, enseñanza y aprendizaje virtual de la comunidad académica y profesional, describe, clasifica y proporciona acceso a la consulta de bases de datos de contenido abierto disponibles en la Web, considerando especialmente la calidad de su contenido, accesibilidad y usabilidad. Para una selección adecuada de los contenidos se ha realizado una encuesta a docentes, investigadores y profesionales de la comunicación audiovisual y cinematografía.

The present study aims to outline the profile of uncited or rarely cited articles indexed in the Web of Science database between 2017 and 2021. We used stratified random sampling of 14,425 journals to extract our study sample of 373 journals. The dependent variable was defined as the number of citations, with independent variables being the JCR index, maturity, quartile, language of publication, and whether the research was funded. Descriptive statistics were used to characterize the sample according to field of research and variable. A negative binomial regression method was used to estimate which variables influence the number of citations received by articles in the sample. We found that of the 256,524 articles that make up the research corpus, 39,469 (15.39%) received no citations and 91,963 articles (35.85%) received up to four citations. The variables that positively influenced estimates of the number of citations were maturity (0.481), JCR index (0.159), and funding (0.020), while quartile (-0.170) and language (-1.032) had a negative influence on number of citations. We conclude that the pressures of academic productivism create a vicious cycle in which studies are referenced based on their ranking in the struggle for privileged editorial space, with articles in higher quartile journals being more prone to citation.

NOABSTRACTIn this paper, we use author clustering based on journal coupling (i.e., shared academic journals) to determine researchers who have the same scientific interests and similar conceptual frameworks. The basic assumption is that authors who publish in the same academic journals are more likely to share similar conceptual frameworks and interests than those who never publish in the same venues. Therefore, they are more likely to be part of the same invisible college (i.e., authors in this subgroup contribute materially to research on the same topic and often publish their work in similar publication venues).Test in a controlled exercise the grouping of authors based on journal coupling to determine invisible colleges in a research field using a case study of 302 authors who had published in the Information Science and Library Science (IS&LS) category of the Web of Science Core Collection. For each author, we retrieved all the scientific journals in which this author had published his/her articles. We then used the cosine measure to calculate the similarity between authors (both first and second order).In this paper, using journal coupling of IS&LS authors, we found four main invisible colleges: “Information Systems”, “Business and Information Management”, “Quantitative Information Science” and “Library Science.” The main journals that determine the existence of these invisible colleges were Inform Syst Res, Inform Syst J, J Bus Res, J Knowl Manage, J Informetr, Pro Int Conf Sci Inf, Int J Geogr Inf Sci, J Am Med Inform Assn, and Learn Publ. However, the main journals that demonstrate that IS&LS determine a field were J Am Soc Inf Sci Tec/J Assoc Inf Sci Tech, Scientometrics, Inform Process Manag, and J Inf Sci.The results shown in this article are from a controlled exercise. The analysis performed using journal coupling excludes books, book chapters, and conference papers. In this article, only academic journals were used for the representation of research results.Our results may be of interest to IS&LS scholars. This is because these results provide a new lens for grouping authors, making use of the authors’ journal publication profile and journal coupling. Furthermore, extending our approach to the study of the structure of other disciplines would possibly be of interest to historians of science as well as scientometricians.This is a novel approach based on journal coupling to determine authors who are most likely to be part of the same invisible college.

Purpose - The purpose of this paper is to report an empirical investigation into conceptions of the \"invisible web\".Design methodology approach - This was an exploratory qualitative study based on in-depth semi-structured interviews with 15 members of academic staff from three biology-related departments at the University of Sheffield. Concepts emerged from an inductive analysis of the interview data to form a tentative model.Findings - A distinction is drawn between technical objective conceptions of the \"invisible web\" that commonly appear in the literature, and a cognitive subjective conception based on searchers' perceptions of search failure, and a tentative model of \"cognitive invisibility\" is presented. The relationship between objective and subjective conceptions, and implications for training, are discussed.Research limitations implications - The research was qualitative and exploratory, designed to elicit sensitising concepts and to \"map the territory\". It thus aims to provide a tentative model that could form the basis for more systematic study. Such research could investigate the validity of the categories in different and or larger samples, seek further to illuminate, challenge, extend or refute the model, and address issues of generalisability.Practical implications - The paper presents a conceptual model that is intended to be a useful reference point for researchers wishing to investigate user-based aspects of search failure and the invisible web. It may also be useful to trainers and those interested in developing information literacy, in that it differentiates technical objective and cognitive subjective conceptions of \"invisibility, and discusses the implications for helping searchers develop more effective searching capabilities.Originality value - The paper offers an alternative cognitive subjective view of \"web invisibility\" to that more commonly presented in the literature. It contributes to a still small body of empirical research into user-based aspects of the invisible web.

This bibliographic review discusses and evaluates cost-free, reliable, quality online content useful to academics in international studies teaching and research at the college level, including how and where to locate such materials through guides, directories, gateway sites, repositories, and various types of search engines; considerations about Internet use in college classes; and undergraduate assignments that use sources of information from the Internet. There is also consideration of characteristics and trends of college student use of the Internet for research purposes, the \"invisible\" or deep web, electronic information literacy for academics, and maintaining current awareness on the fast-changing web.

The seemingly solid ground beneath our feet sits on shifting tectonic plates. In human terms, the plates seem to move slowly, but across the millennia, their movement has created the continents and oceans as we know them today. The shifting of tectonic plates gives rise to earthquakes, which alter the physical landscape that rests on the plates. These shifts are driven in turn by forces emanating from deep within the earth. According to the theory of plate tectonics, which was proposed independently by Harry Hess and Ronald Dietz in the early 1960s, the surface of the ocean floor expands as

BizNar: Deep Web Business Search biznar.com BizNar scans all kinds of resources, including periodicals such as Advertising Age, governmentresourcessuchasUSA .gov and the Bureau of Labor Statistics, news sources Businessweek and the Wall Street Journal, and social networks like Linkedln and Wordpress. [...]Layer Tools: More academic Beyond popular and basic reference tools, resources in this second layer vary from proprietary databases to feebased resources that cover in depth almost any subject area, especially in the sciences. [...]Layer: Research tools for people engaged in very specialized fields E-Print Network-Energy, Science, and Technology for the Research Community osti.gov/eprints The E-Print Network offers scientific and technologyrelated resources collected from more than 35,000 databases worldwide, including materials on basic and applied sciences, physics, chemistry, biology and life sciences, materials science, nuclear sciences and engineering, energy research, and computer and information technologies.