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Institution

University of Lisbon

EducationLisbon, Lisboa, Portugal
About: University of Lisbon is a education organization based out in Lisbon, Lisboa, Portugal. It is known for research contribution in the topics: Population & European union. The organization has 19122 authors who have published 48503 publications receiving 1102623 citations. The organization is also known as: Universidade de Lisboa & Lisbon University.


Papers
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Journal ArticleDOI
TL;DR: A comprehensive modeling framework is proposed as a first step towards the elaboration of a reference model for collaborative networks.
Abstract: Collaborative networked organizations (CNOs) are complex entities whose proper understanding, design, implementation, and management require the integration of different modeling perspectives. A large number of modeling tools and theories that have been developed in other disciplines have a potential applicability in this domain. Therefore, an identification of the most promising approaches is made and mapped into four dimensions of an endogenous perspective of collaborative networked organizations: structural, componential, functional, and behavioral. But a comprehensive modeling of such complex dynamic systems requires also an exogenous perspective, the life cycle dimension, and a stratification of models according to the modeling purpose. Thus a comprehensive modeling framework is therefore proposed as a first step towards the elaboration of a reference model for collaborative networks.

207 citations

Journal ArticleDOI
TL;DR: The data suggest that although obesity was identified as a public health problem one decade ago, action to reduce it does not seem to have been very effective to date, and well‐defined public health intervention must be targeted to specific population groups where higher levels of obesity prevalence were found.
Abstract: Summary Obesity is an endemic health problem in most developed countries, requiring serious public health attention. The first Portuguese nationwide representative survey about obesity (with objective anthropometric measurement) was undertaken from 1995 to 1998. This paper presents data coming from the second and most recent nationwide representative study of obesity, with objective measurement of weight, height, waist and hip circumferences. Data were collected between January 2003 and January 2005. The survey collected objective body mass index (BMI) values of 8116 participants aged 18‐64. Main findings were: 2.4% of the sample had low weight (BMI < 18.5), 39.4% were overweight (BMI between 25.0 and 29.9), and 14.2% obese (BMI 30). Waist circumference measurement showed that 45.6% of the sample suffers increased cardiovascular health risks associated with high waist circumference. The overall overweight/ obesity prevalence increased from 49.6% (in 1995‐1998) to 53.6% (in 2003‐ 2005). These data suggest that although obesity was identified as a public health problem one decade ago, action to reduce it does not seem to have been very effective to date. Well-defined public health intervention must be targeted to specific population groups where higher levels of obesity prevalence were found: low socioeconomic level groups and low-education level groups.

206 citations

Journal ArticleDOI
TL;DR: In this article, the authors describe a study of the relationships between team inputs (task type and team size) and team processes in 87 cross industry Portuguese teams, some of which had high and some low requirements to innovate.
Abstract: This article describes a study of the relationships between team inputs (task type and team size) and team processes in 87 cross industry Portuguese teams, some of which had high and some low requirements to innovate. Team processes were measured using the Team Climate Inventory (TCI), which focuses on clarity of and commitment to team objectives, levels of participation, support for innovation, and quality emphases. Three hypotheses were tested. The first proposed that teams carrying out tasks with a high innovation requirement would have high scores on a measure of team processes. This was supported insofar as such teams reported higher levels of participation and support for innovation. The second hypothesis proposed that large teams would have poorer team processes. This hypothesis was confirmed. The third hypothesis concerned the interaction between size and innovation. The results suggested that large teams operating under a relatively high pressure to innovate have poorer team processes than large teams that do not have a high requirement to innovate.

206 citations

Journal ArticleDOI
TL;DR: In this article, the authors describe the structure of subdirectly irreducible hoops, and establish that the class of hoops is generated, as a quasivariety, by its finite members.
Abstract: A hoop is a naturally ordered pocrim (ie, a partially ordered commutative residuated integral monoid) We list some basic properties of hoops, describe in detail the structure of subdirectly irreducible hoops, and establish that the class of hoops, which is a variety, is generated, as a quasivariety, by its finite members

206 citations

Journal ArticleDOI
TL;DR: A survey of useful, established formulas in fractional calculus can be found in this paper, where the authors present a survey of the most useful formulas in Fractional Calculus, systematically collected for reference purposes.
Abstract: This paper presents a survey of useful, established formulas in Fractional Calculus, systematically collected for reference purposes.

205 citations


Authors

Showing all 19716 results

NameH-indexPapersCitations
Joao Seixas1531538115070
A. Gomes1501862113951
Marco Costa1461458105096
António Amorim136147796519
Osamu Jinnouchi13588586104
P. Verdier133111183862
Andy Haas132109687742
Wendy Taylor131125289457
Steve McMahon13087878763
Timothy Andeen129106977593
Heather Gray12996680970
Filipe Veloso12888775496
Nuno Filipe Castro12896076945
Oliver Stelzer-Chilton128114179154
Isabel Marian Trigger12897477594
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
2023247
2022827
20214,520
20204,517
20193,810
20183,617