Resistencia al aplastamiento en madera de álamo para uniones mecánicas de diámetro 5 mm

El eeglamento argentino de estructuras de madera CIRSOC 601 propone valores de resistencia al aplastamiento en función de la gravedad anhidra y el diámetro del perno. Estos valores tienen su origen en la norma americana NDS 2005. El Suplemento 4 del citado reglamento considera que la resistencia al aplastamiento para diámetros menores a 6,35 mm es independiente de la dirección de las fibras y del diámetro del perno. Para diámetros mayores a 6,35 mm, relaciona la resistencia al aplastamiento perpendicular a la fibra con el diámetro de la clavija y considera que la resistencia al aplastamiento en la dirección paralela a la fibra es independiente de dicho parámetro. Resulta necesario verificar estos valores para maderas argentinas, en particular para las provenientes de bosques implantados. En este trabajo se determinaron los valores de resistencia al aplastamiento para madera de Álamo, Populus deltoides clones ‘Australiano 129/60’ y “Stoneville 67" procedente de bosques implantados en la localidad de Morse, al Noroeste de la Provincia de Buenos Aires, Argentina, y se analizó la correlación entre la resistencia al aplastamiento y la densidad anhidra. Se efectuaron 98 ensayos de acuerdo a las prescripciones de la norma UNE-EN 383:2007, 64 en la dirección paralela a las fibras y 34 en dirección perpendicular, se utilizaron pernos rígidos de 5 mm. Los resultados obtenidos muestran que la resistencia en la dirección paralela es ligeramente superior (7 %) a la obtenida para la dirección perpendicular, 24,8 N/mm2 versus 23,0 N/mm2. Los valores experimentales son inferiores a los propuestos por el CIRSOC 601, en un 5 % para la dirección paralela y en un 17 % para la dirección perpendicularFil: Zorrilla, Lautaro. Argentina. Universidad Nacional del Noroeste.Fil: Lombardo, Gianluca. Argentina. Universidad Nacional del Noroeste.Fil: Carboni, Francisco. Argentina. Universidad Nacional del Noroeste.Fil: Cichero, Renso. Argentina. Universidad Nacional del Noroeste

Long-term monitoring of tropical moist forest extent (from 1990 to 2019): Description of the dataset

The need for accurate information on the state and evolution of tropical forest types at regional and continental scales is widely recognized, particularly to analyze the forest diversity and dynamics, to assess degradation and deforestation processes and to better manage these natural resources. Here we document the approach that was developed by JRC to map and monitor the extent of moist tropical forests and their changes (degradation, deforestation and regrowth) over the last three decades (1990-2020) at fine spatial resolution (30 m × 30 m). The approach is based on the analysis of each valid observation from the Landsat archive and allows to capture disturbances with a short-duration appearance on satellite imagery such as selective logging, fires, and severe weather events (hurricanes, dryness). This new approach allows characterizing the sequential dynamics of forest cover changes by providing transition stages from the initial observation period to the most recent year (2019 for this report). For the first time at the pantropical scale the occurrence and extent of forest degradation can be documented on an annual basis in addition to the monitoring of deforestation. After a short introduction (chapter 1), this technical report describes the study area (chapter 2), the input data (chapter 3), the method that has been developed (chapter 4), and the outcomes of this study (chapter 5). A discussion is also provided regarding the specificities and added value of the outcomes (chapter 6), and the known limitations and future expected improvements (chapter 7). This new pan-tropical scale deforestation and forest degradation monitoring system will contribute to the EU Observatory on deforestation, forest degradation, changes in the world’s forest cover, and associated drivers, which is an action being implemented in the framework of the Communication from the Commission to step up EU action to protect and restore the World’s forests (COM(2019) 352).JRC.D.1-Bio-econom

Intercultural Mentoring tools to support migrant integration at school (INTO)

[ES] Within the scope of European policies and to combat educational disadvantages for migrant children, numerous actions have been taken to improve the position of migrant children in education. In secondary education the emphasis lies on diversification of the offered teaching methods and extra guidance of the pupils. Some schools in Europe have set up measures to increase the continuity of the educational support in terms of migrant pupil inclusion and orientation. Despite these measures, dropout rates are still high among migrant youth and compared to their native peers a disproportionately large number attend the lowest levels of secondary school after completing primary school. The disappointing results of regular guidance are partly the reason for the development of more innovative forms of guidance. The project aims to promote strategies and methods that help students with a migrant background at risk of ESL to maintain their motivation through the development, testing and validation of an Intercultural Mentoring Programme based on the empowered peer education methodology.The Intercultural mentor profile will be adapted to different European contexts, developed in collaboration with at least 100 school staff members (headmaster and secondary school teachers from 5 different European countries) and tested with at least 50 students with a migrant background trained as Intercultural Mentors. The impact of the project will be sustained thanks to its outcomes: (i) Didactic Kit: conceived as self-teaching materials will contain the training framework to directly implement the model of intervention in secondary schools system; (ii) Guideline Handbook: support the future implementation of training courses – by other education organizations and secondary school, (iii) Project website: it will include not only the results and materials of the project (handbooks, e-learning platform, reports, etc.) but will also include updated information on young migrants

Intercultural Education through Religious Studies (IERS): COMENIUS Multilateral project

[EN] Religious and cultural diversity are today more than ever a critical and political challenge as the recent emergencies related to geo-political and economical global transformations clearly show. European countries are concerned by a big immigration flow that demands an educational effort in order to foster the mutual understanding and integration. According to Toledo guiding principles, IERS project meets the needs of an innovative approach in teaching about religions and beliefs at school by providing teachers of humanistic disciplines with new tools that help teachers and pupils to plunge deeper into religions and cultures of non-european countries, as well as raising the knowledge of the religious traditions that contributed to the common European cultural Identity, promoting it in the best way suited for encourage intra -and extra- European cultural dialogue attitudes. The Project aims to support the development of social, civic and intercultural transversal key competences by educating towards a positive understanding of cultural and religious differences, a readiness to engage in dialogue and to avoid or manage conflicts. By encouraging teachers and pupils to expose themselves to the differences and commonalities of religious topics, it promotes also the values of democracy, equality and human rights as it deals with social and civic dimensions of both intercultural and interreligious dialogue. The project will involve high school in-service teachers by developing a complete set of didactical tools and training experiences. The results will be: 1. A baseline study which analyzes the actual situation of teaching about religions throughout Europe; 2. New innovative didactic tools such as Multimedia Digital Modules to be used in classroom activities, accompanied by a Handbook with didactical guidelines for teachers. 3. Teacher support activities (virtual community, training activities, developing of didactical projects to apply in classroom)

Differential branching fraction and angular analysis of the decay B0→K∗0μ+μ−

The angular distribution and differential branching fraction of the decay B 0→ K ∗0 μ + μ − are studied using a data sample, collected by the LHCb experiment in pp collisions at s√=7 TeV, corresponding to an integrated luminosity of 1.0 fb−1. Several angular observables are measured in bins of the dimuon invariant mass squared, q 2. A first measurement of the zero-crossing point of the forward-backward asymmetry of the dimuon system is also presented. The zero-crossing point is measured to be q20=4.9±0.9GeV2/c4 , where the uncertainty is the sum of statistical and systematic uncertainties. The results are consistent with the Standard Model predictions

Opposite-side flavour tagging of B mesons at the LHCb experiment

The calibration and performance of the oppositeside flavour tagging algorithms used for the measurements of time-dependent asymmetries at the LHCb experiment are described. The algorithms have been developed using simulated events and optimized and calibrated with B + →J/ψK +, B0 →J/ψK ∗0 and B0 →D ∗− μ + νμ decay modes with 0.37 fb−1 of data collected in pp collisions at √ s = 7 TeV during the 2011 physics run. The oppositeside tagging power is determined in the B + → J/ψK + channel to be (2.10 ± 0.08 ± 0.24) %, where the first uncertainty is statistical and the second is systematic

Search for CP violation in D+→ϕπ+ and D+s→K0Sπ+ decays

A search for CP violation in D + → ϕπ + decays is performed using data collected in 2011 by the LHCb experiment corresponding to an integrated luminosity of 1.0 fb−1 at a centre of mass energy of 7 TeV. The CP -violating asymmetry is measured to be (−0.04 ± 0.14 ± 0.14)% for candidates with K − K + mass within 20 MeV/c 2 of the ϕ meson mass. A search for a CP -violating asymmetry that varies across the ϕ mass region of the D + → K − K + π + Dalitz plot is also performed, and no evidence for CP violation is found. In addition, the CP asymmetry in the D+s→K0Sπ+ decay is measured to be (0.61 ± 0.83 ± 0.14)%

Measurement of the Bs0→J/ψKS0B_s^0\to J/\psi K_S^0 branching fraction

The $B_s^0\to J/\psi K_S^0$ branching fraction is measured in a data sample corresponding to 0.41$fb^{-1}$ of integrated luminosity collected with the LHCb detector at the LHC. This channel is sensitive to the penguin contributions affecting the sin2$\beta$ measurement from $B^0\to J/\psi K_S^0$ The time-integrated branching fraction is measured to be $BF(B_s^0\to J/\psi K_S^0)=(1.83\pm0.28)\times10^{-5}$. This is the most precise measurement to date