142 research outputs found

    Cooperation vs. firm-based innovation: A sectoral comparison in Portugal

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    In today's knowledge-intensive economies, the enterprises can have a strong economic and social influence as "market protagonists". Facing today's economic instability they ought to provide a constant stream of innovations to clients. Researchers suggest that firms can reshape the market through their innovations, for which can contribute some external expert knowledge. The process of developing an innovation may imply three types of approach: make; buy or cooperate with other agents to acquire specific competences or knowledge. This last occurs when the firms' internal knowledge or skill-base is not sufficient or effective and is conveniently complemented with external sources. Firms' cooperation, among them or with clients or other stakeholders, and its potential for innovation is not new. In this paper, our aim is to identify the sectors more willing to engage in cooperation initiatives in order to accomplish innovation. Thus, this paper is structured as follows: Introduction; 1. Literature Review (Innovation and its assets; Disclosing the process of innovation; Open innovation; Cooperation for innovation); 2. Research Design (The CIS instrument; Sampling); 3. Results (The nature of the innovation process by sector: cooperation-based vs. firm-based; The scale and scope of cooperation); Concluding Remarks. Using descriptive statistics, the first step will be to identify the sectors more willing to engage in cooperation initiatives in order to accomplish innovation. Secondly, for those sectors a more detailed analysis on the scale and scope of cooperation is developed. For this study a secondary dataset was used from the CIS-2012 (DGEEC, 2014). The CIS, operation acronym in the Eurostat for Community Innovation Survey, is the main statistical survey (mandatory for EU member states) on innovation in companies. The universe contemplates Portuguese companies with 10 or more employees belonging to the NACE codes. The INITIAL sample consisted of 9423 companies. 6840 valid answers were considered

    Movimentos económicos de longo prazo e inovação

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    Sources of Innovation: The Case of Portuguese Consultancy Sector

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    This study addresses the effects of external environments on types of innovation introduced by Portuguese consultancy firms (PCs) in computer, technical, and management areas. It distinguishes the most determinant factors for innovation regarding product, process, organization, and marketing. The assessment framework followed three steps: 1) evaluation of propensity to use external sources of information and cooperation with agents, 2) identification of factors used most often during innovation, and 3) derivation of profiles of firms under study. The method generated tree-based classification models that segmented the sample into innovative and non-innovative firms, and distinct profiles that emphasized specificities concerning use of external sources and agents for innovation

    Determinants of innovation in European construction firms

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    The research aims to identify the determinants of process and product innovation in a traditional and low-tech sector, supported in micro, small and medium-sized enterprises (SMEs), specifically European Construction Sector. The study uses micro data from the e-Business Survey of the European Commission. The dependent variables studied are binary (presence or absence of process or/and product innovation). The explanatory variables considered are: suppliers, clients, market orientation, turnover growth and size. In addition, some national context variables – GDP per capita and R&D weight in GDP – are also tested. The results show that the sector of construction innovates, and the factors that contribute more to this innovation are suppliers and growth of business. It is also concluded that firm size is more relevant for process innovation than for product innovation, and companies that are guided by international markets innovate more than those that focus on local and regional markets. First published online: 29 Jan 201

    Turbulent Energy Budgets of a Ground Vortex Flow

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    Turbulent kinetic energy budgets are presented for a highly curved flow generated by the collision of plane wall turbulent jet with a low-velocity boundary layer. The different terms are obtained in the vertical plane of symmetry by quadratic interpolation of the LDV (Laser Doppler Velocimetry) measurements, for a wall jet-to-boundary layer velocity ratio of 2. The results, which have relevance to flows encountered in powered-lift aircraft operating in ground effect, quantify the structure of the complex ground vortex flow. The analysis of turbulent energy equation terms using the measured data revealed that production by normal and shear stresses are both very important to the turbulent structure of the impact zone of the ground vortex. This is an indication that the modeling of turbulence of a ground vortex requires a good representation of the production by normal stresses which is most important in the collision zone.Fundação para a Ciência e a Tecnologiainfo:eu-repo/semantics/publishedVersio

    Prevalence of asthma, allergic rhinitis and eczema in 6–7-year-old schoolchildren from Luanda, Angola

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    Background: Epidemiological data have shown that the prevalence of asthma, rhinoconjunctivitis and eczema in children is still increasing, namely in Africa. However, there are no epidemiological studies on asthma or allergic diseases in Angolan children. Objective: To study the prevalence of asthma and other allergic diseases in Angolan children. Methods: Descriptive, observational, cross-sectional study, using the ISAAC study methodology, in the province of Luanda, Angola in 6-7-yearold children. Forty-six (8.3%) public schools were randomly selected. Data were analysed using the SPSS Statistics version 24.0 software. Results: A total of 3080 children were studied. Results showed that the prevalence of asthma (wheezing in the previous 12 months) was 15.8%, that of rhinitis (sneezing, runny or blocked nose in the previous 12 months) was 19% and that of eczema (itchy skin lesions in the previous 12 months) was 22%, without differences between sexes. Rhinitis was associated with a higher number of episodes of wheezing episodes, disturbed sleep and night cough, in children with asthma. Rhinitis, eczema, Split-type air conditioning system, antibiotic intake in the child's first year of life, frequent intake (more than once per month) of paracetamol and active maternal smoking were associated with a higher risk of having asthma, whereas electrical cooking was associated with a protective effect. Conclusion: Asthma and allergic diseases are highly prevalent in children from Luanda. A strategy for preventive and control measures should be implemented.info:eu-repo/semantics/publishedVersio

    Visceral Abdominal and Subfascial Femoral Adipose Tissue Have Opposite Associations with Liver Fat in Overweight and Obese Premenopausal Caucasian Women

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    Abdominal obesity has been associated with liver fat storage. However, the relationships between other body composition depots and metabolic syndrome features with hepatic fat are still unclear. We examined abdominal and thigh adipose tissue (AT) compartments associations with liver fat in 140 overweight and obese premenopausal Caucasian women. Blood lipids and, proinflammatory and atherothrombotic markers associations with hepatic fat were also analyzed. A larger visceral AT (VAT) was related with liver fat (P < 0.05). Contrarily, thigh subfascial AT was inversely related to liver fat (P < 0.05). Increased fasting insulin, triglycerides, PAI-1 concentrations, and a higher total-cholesterol/HDL-cholesterol ratio were also associated with hepatic fat, even after adjustment for VAT (P < 0.05). Thigh subfascial adiposity was inversely associated with liver fat, suggesting a potential preventive role against ectopic fat storage in overweight and obese women. These results reinforce the contribution of an abdominal obesity phenotype associated with a diabetogenic and atherothrombotic profile to liver lipotoxicity

    Differences in the size of eggshells among three Pangstrongylus megistus colonies

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    The objective of the study was to evaluate the measurements of eggshells from three colonies of P. megistus, two from the lab and one from a sylvatic habitat. Fifty eggshells from each colony were measured with the use of a stereoscopic microscope and the Qwin image analysis system,. The statistical analysis was performed using unpaired t-test in INSTAT program. The length, width and diameter of the opercular opening of the eggshells from the sylvatic colony were larger than the two laboratorial colonies of P. megistus.O objetivo do estudo foi avaliar as mensurações de cascas de ovos de duas colônias laboratoriais e uma silvestre de P. megistus. De cada uma das colônias, 50 cascas de ovos foram mensuradas por meio de microscópio estereoscópico e sistema de análise de imagem QWin. A análise estatística foi efetuada utilizando o teste t-Student, não pareado no programa INSTAT. A largura, o comprimento e o diâmetro da abertura opercular das cascas de ovos de uma colônia silvestre foram maiores que de duas colônias laboratoriais de P. megistus

    Who will lose weight? A reexamination of predictors of weight loss in women

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    BACKGROUND: The purpose of this study was to analyze pretreatment predictors of short-term weight loss in Portuguese overweight and obese women involved in a weight management program. Behavioral and psychosocial predictors were selected a priori from previous results reported in American women who participated in a similar program. METHODS: Subjects were 140 healthy overweight/obese women (age, 38.3 ± 5.9 y; BMI, 30.3 ± 3.7 kg/m(2)) who participated in a 4-month lifestyle weight loss program consisting of group-based behavior therapy to improve diet and increase physical activity. At baseline, all women completed a comprehensive behavioral and psychosocial battery, in standardized conditions. RESULTS: Of all starting participants, 3.5% (5 subjects) did not finish the program. By treatment's end, more than half of all women had met the recomended weight loss goals, despite a large variability in individual results (range for weight loss = 19 kg). In bivariate and multivariate correlation/regression analysis fewer previous diets and weight outcome evaluations, and to a lesser extent self-motivation and body image were significant and independent predictors of weight reduction, before and after adjustment for baseline weight. A negative and slightly curvilinear relationship best described the association between outcome evaluations and weight change, revealing that persons with very accepting evaluations (that would accept or be happy with minimal weight change) lost the least amount of weight while positive but moderate evaluations of outcomes (i.e., neither low nor extremely demanding) were more predictive of success. Among those subjects who reported having initiated more than 3–4 diets in the year before the study, very few were found to be in the most successful group after treatment. Quality of life, self-esteem, and exercise variables did not predict outcomes. CONCLUSIONS: Several variables were confirmed as predictors of success in short-term weight loss and can be used in future hypothesis-testing studies and as a part of more evolved prediction models. Previous dieting, and pretreatment self-motivation and body image are associated with subsequent weight loss, in agreement with earlier findings in previous samples. Weight outcome evaluations appear to display a more complex relationship with treatment results and culture-specific factors may be useful in explaining this pattern of association
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