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La Web ha motivado la generación de herramientas que permiten, con distintos grados de sofisticación y precisión, manipular sus contenidos. Para ello, tratan una serie de problemas, relacionados con la naturaleza impe...

"El número de satélites y chatarra espacial orbitando alrededor de la Tierra ha crecido en las últimas décadas. La chatarra espacial además de ser un tipo de contaminación ambiental, es también un inconveniente pa...

La mirada -acto de ver- tiene, de acuerdo con investigaciones contemporáneas, tres diferentes funciones: informa, toca y habla. Este estudio analiza la función lingüística de la mirada -cómo los ojos hablan- en la o...

In several applications, the trajectory of an entity, a feature or an object has to be tracked over a sequence of image frames. When the processing is to be performed in real time, there are important constraints leading...

In this paper we explore different situations in which collaborative agents have to communicate among themselves using standard interaction protocols. We will propose how to process these interactions in parallel without...

Fil: Gómez Mont, Carmen. Universidad Nacional Autónoma de México; México. Esta investigación tiene como principal objetivo realizar una primera aproximación a la formación de prácticas de información y comunicac...

In wireless mobile ad hoc networks, packet delivery is achieved through two closely related network-layer operations: ad hoc routing and packet forwarding. As a result any security solution should encompass the protectio...

In this final installment of the paper we consider the case where the signals or the messages or both are continuously variable, in contrast with the discrete nature assumed until now. To a considerable extent the contin...

An encryption method is presented with the novel property that publicly revealing an encryption key does not thereby reveal the corresponding decryption key. This has two important consequences: (1) Couriers or other sec...

An encryption method is presented with the novel property that publicly revealing an encryption key does not thereby reveal the corresponding decryption key. This has two important consequences: Couriers or other secure ...

BACKGROUND: Cancer immunotherapy, such as anti-cytotoxic T-lymphocyte-associated protein 4 (CTLA-4) and anti-programmed death 1 (PD-1), has revolutionized the treatment of malignancies by engaging the patient's own immun...

Abstract Objective: Funnel plots (plots of effect estimates against sample size) may be useful to detect bias in meta-analyses that were later contradicted by large trials. We examined whether a simple test of asymmetry ...

BACKGROUND: Depression is a prevalent and disabling condition in older persons (≥ 60 years) that increases the risk of mortality and negatively influences quality of life (QOL). The relationship between depression, or ...

Complex interventions are widely used in the health service, in public health practice, and in areas of social policy that have important health consequences, such as education, transport, and housing. They present vario...

This chapter presents a theoretical and methodological approach to the study of communication and its effects through the diffusion of innovation from a communication approach. It demonstrates through the history of diff...

BACKGROUND: There is a growing recognition of the value of synthesising qualitative research in the evidence base in order to facilitate effective and appropriate health care. In response to this, methods for undertaking...

The National High Blood Pressure Education Program presents the complete Seventh Report of the Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure. Like its predecessors, t...

List of Boxes List of Tables and Figures Foreword Acknowledgments 1. Defining Content Analysis Is Content Analysis Easy? Is It Something That Anyone Can Do? A Six-Part Definition of Content Analysis 2. Milestones in the ...

"The Seventh Report of the Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure" provides a new guideline for hypertension prevention and management. The following are the k...

This reissue of Understanding Media marks thirtieth anniversary (1964-1994) of Marshall McLuhan's classic expose on state of then emerging phenomenon of mass media. Terms and phrases such as the global village and the me...

Objectives To describe new WHO 2020 guidelines on physical activity and sedentary behaviour. Methods The guidelines were developed in accordance with WHO protocols. An expert Guideline Development Group reviewed evidence...