Search results for "InVEST"
showing 10 items of 2596 documents
Design of Scales to Assess the subjective social value of education for students in primary and secondary school.
2017
Abstract The devaluation of education, related with multiple socio-economic and psycho-school factors may be influencing decisively on academic results. A target level is observed that the socio-economic and cultural level of families can decide the student performance, however, this international trend shows inconsistent results. In addition, in different studies, we can observe that students from disadvantaged backgrounds statistics exceed expectations in performance, surpassing the expected results depending on their socioeconomic and cultural level; and students should achieve optimal results for their family situation do not get the expected performance. An interpretative hypothesis ma…
La transformación del currículo en una sociedad diversa : ¿quién y cómo se decide el currículum?
2018
The purpose of this article is to show how, in the United States, some states and school districts are transforming their curriculum through ethnic studies. Ethnic studies exists as a result of unequal power relations in which historically marginalized groups have not had the power to define how education will serve their own communities. According to its activists, ethnic studies not only teaches about the cultures of diverse groups, but also reconstructs, the curriculum around the counter-narratives perspectives, epistemologies, and visions of groups that have been treated historically as if their experiences and perspectives were of lesser value. The article begins with a theoretical fra…
La valutazione dell’investimento pubblico nell’industria della trasformazione ittica in Sicilia. Un’indagine esplorativa
2016
This paper aims to contribute to a better understanding of the effects and impact on family businesses of policies based on public funding to sustain the development of declining regions. It presents the case of a measure promoted the Sicilian Regional Government to try to revert the economic decline of the fishing industry in Sicily. Sicily is the largest Island in the Mediterranean Sea, and Fishing has been a traditional activity in the region for centuries. In the last decades, the industry has been facing serious problems, including increasing obsolescence of the fleet, inefficient marketing facilities, fish depletion in local waters. Mazara del Vallo, located in the South-West of the i…
Toeholds and takeover probability: implications for investment strategies
2009
PurposeThe purpose of this paper is to propose various toehold indicators and analyse whether the models incorporating these indicators can be used to establish investment strategies.Design/methodology/approachLogistic regression is used to test toehold indicator significance.FindingsThe results reflect that the designed measures are positively correlated to the likelihood of launching a takeover, although the power of the models to predict out‐sample takeovers is moderate, between 60.71 percent and 71.59 percent. The indicators allow us to design strategies which offer positive abnormal returns. In particular, abnormal return over the Fama‐French factors is 0.5 percent.Originality/valueToe…
Evaluation of the effect of chance correlations on variable selection using Partial Least Squares -Discriminant Analysis
2013
Variable subset selection is often mandatory in high throughput metabolomics and proteomics. However, depending on the variable to sample ratio there is a significant susceptibility of variable selection towards chance correlations. The evaluation of the predictive capabilities of PLSDA models estimated by cross-validation after feature selection provides overly optimistic results if the selection is performed on the entire set and no external validation set is available. In this work, a simulation of the statistical null hypothesis is proposed to test whether the discrimination capability of a PLSDA model after variable selection estimated by cross-validation is statistically higher than t…
Sunk cost of local elected representatives in situation of fiscal competition: An example of escalating commitment
2018
Abstract Introduction Competition between French local communities to build infrastructures to attract enterprises and residents could sometimes result in irrational public spending. Objectives Show the influence of psychological factors and the phenomenon of escalating commitment in particular on this type of economic decision. Method We conducted a survey comprising four scenarios which were sent to 285 local elected representatives and we study the impact of the factors “Amount of sunk costs” and “Level of project completion” on two dependent variables, “the desire to complete the project” and “the judgment regarding the quality of the investment”. The scenarios presented a project which…
In vitro and in vivo arterial differentiation of human multipotent adult progenitor cells
2006
Many stem cell types have been shown to differentiate into endothelial cells (ECs); however, their specification to arterial or venous endothelium remains unexplored. We tested whether a specific arterial or venous EC fate could be induced in human multipotent adult progenitor cells (hMAPCs) and AC133(+) cells (hAC133(+)). In vitro, in the presence of VEGF(165), hAC133(+) cells only adopted a venous and microvascular EC phenotype, while hMAPCs differentiated into both arterial and venous ECs, possibly because hMAPCs expressed significantly more sonic hedgehog (Shh) and its receptors as well as Notch 1 and 3 receptors and some of their ligands. Accordingly, blocking either of those pathways …
Risk of Death Associated With Intravitreal Anti-Vascular Endothelial Growth Factor Therapy: A Systematic Review and Meta-analysis.
2020
Importance Although intravitreal anti–vascular endothelial growth factor (VEGF) treatment represents the first-line therapy for many retinal diseases, the issue of their systemic safety is debatable. Objectives To assess whether intravitreal anti-VEGF therapy might be associated with increased risk of mortality and which variables are associated with the increase. Data Sources PubMed, MEDLINE, and Embase databases, the Cochrane Library, and ClinicalTrials.gov were systematically searched from inception to May 6, 2019. Study Selection Randomized clinical trials comparing intravitreal anti-VEGF treatment with control groups and with follow-up of at least 6 months were selected. Data Extractio…
The Veblen-Gerschenkron Effect of FDI in Mezzogiorno and East Germany
2003
The presence of foreign multinational enterprises (MNEs) can benefit local economies. In particular, if MNEs are very productive compared to domestic firms, they may promote learning and catch-up of local firms. Such a channel of spillovers from MNEs to local firms is known as the Veblen-Geschenkron effect. Rather than the overall density of MNEs in a region or sector, it is their initial productivity advantage on the local firm to determine the positive effect on domestic productivity growth. We test this hypothesis using firm level data for German and Italian companies during the 90's and we find evidence of a significant and robust Veblen-Gerschenkron effect.
Flow characteristics in a vegetated flume
2008
Vegetation altering hydrodynamic conditions of an open channel flow controls the exchanges of sediment, nutrients and contaminants. Thus, the knowledge of the hydraulic characteristics of flow over vegetation is very important to support the management of fluvial processes. In this paper the flow over real flexible vegetation is experimentally studied. A 2D-ADV (Acoustic Doppler Velocimeter) is used to measure the local flow velocities for different vegetation concentrations and varying the discharge and the flume slope. The flow velocity measures are used to test the hyperbolic tangent profile of a pure mixing layer and to evaluate the mixing-layer parameters. The formation of turbulence s…