Search results for " lead"

Child-centered and teacher-directed practices in relation to calculation and word problem solving skills

2019

Abstract This study examined transactional associations between classroom-level math skills and teaching practices. Participants were 523 children from 31 classrooms. Math skills were assessed three times. Teaching practices were observed in Grades 1 and 3. Child-centered practices promoted subsequent calculation skills whereas teacher-directed practices were associated with a lower level of calculation skills. Higher problem-solving skills at Grade 2 predicted more child-centered practices and less teacher-directed practices in third grade. Moreover, calculation skills mediated the effect of child-centered practices on problem-solving skills. The results suggest that teaching practices and…

Effect of pruning-derived biochar on heavy metals removal and water dynamics

2014

Biomass-derived biochar is considered as a promising heavy metal adsorbent, due to abundance of polar functional groups, such as carboxylic, hydroxyl, and amino groups, which are available for heavy metal removal. The aims of this study were to evaluate the effectiveness of an orchard pruning-derived biochar in removing some heavy metals (through the evaluation of isotherms) and to study water dynamics at the solid-liquid interface as affected by heavy metal adsorption (through an innovative nuclear magnetic resonance (NMR) relaxometry approach). Both isotherms and NMR spectra revealed that Pb and Cr showed a good affinity for the biochar surface (Pb > Cr), while Cu was less affine. Accordi…

Distribution of Cr and Pb in artificial sea water and their sorption in marine sediments: an example from experimental mesocosms

2016

The uptake of two heavy metals (chromium and lead) in sediments in experimental mesocosms under exposure to different metal concentrations was evaluated by monitoring their concentrations over time both in seawater and in sediment. Two separate experiments under laboratory-controlled conditions were carried out for the two metals. Sediments were collected from a protected natural area characterized by low anthropic influence and were placed in mesocosms that were housed in aquaria each with seawater at a different metal concentration. At pre-established time intervals, seawater and sediment samples were collected from each mesocosm for chemical analyses. Quantification of chromium and lead …

Promoting Leadership Skills in Teachers with Coaching

2023

Today, the acquisition of additional skills by the teacher is a central fac tor in addressing contemporary changes in educational practices. Parallel to this, teaching profession requires an identity and practical teaching skills to improve the ability to help the younger generation in their self-realization. As a result, the teacher is no longer just a disseminator of knowledge, but a professional committed to consolidating his/her profile through paths of training and cultural growth, participation in experiences that intertwine teaching activity, with multi disciplinary design, educational research and ongoing training. Taking a closer look at how coaching can support teachers’ developme…

Family Relationships and Cyberbullying

2015

This chapter analyzes the relationship between family and cyberbullying, a type of technological harassment among peers which is of growing concern in the scientific community and in today’s society. First, this chapter discusses factors associated with family functioning that may predict cyberbullying, particularly the family climate (cohesion, expressivity, and conflict) and parent–children communication. It also examines the role of parental socialization styles and their continuity with parental styles on the Internet: authoritarian style, laissez-faire, permissive and authoritative. In relation to parental styles, one section in this chapter describes the parental monitoring of Interne…

Distributed pedagogical leadership in support of student transitions

2012

This article examines how, through uncovering collaborative leadership, the whole school staff is able to understand its common endeavours to support heterogeneous students’ fluent learning paths. For this, a notion of distributed pedagogical leadership (DPL) is drawn upon. DPL concerns everyone in the school community, not only leaders and management. It means abandoning role, instrumental or process centricity and moving towards leadership that is characterized as the innermost qualities of a professional learning community. This kind of leadership is best described with 10 ‘keys’ as 10 key attributes. To understand DPL in practice, quantitative data both from a nationwide Finnish survey…

LE AREE INTERNE PER LO SVILUPPO DEL TERRITORIO E LA COMPLEMENTARITÀ DI PROGRAMMI E STRUMENTI FRA LE POLITICHE EUROPEE DI SVILUPPO RURALE E DI COESIONE

Le Aree Interne rappresentano un tema particolarmente importante per la programmazione e la spesa dei fondi comunitari nel periodo 2014-2020 perché costituiscono il più grande esempio di complementarità fra le Politiche europee di sviluppo rurale e di coesione. Per lo sviluppo di queste Aree è stata creata una Strategia Nazionale per le Aree Interne (SNAI) che mira alla valorizzazione ed al recupero di tutti quei territori (rurali, montuosi, svantaggiati) dal carattere marginale rispetto alla disponibilità e all’offerta di servizi essenziali. La peculiarità di tale Strategia è quella di promuovere lo sviluppo di aree che sono uniformemente distribuite in tutto il comprensorio nazionale a di…

Compromiso afectivo, liderazgo participativo e innovación del empleado: una investigación multinivel

2019

Research investigating the relationship between organizational affective commitment and employee innovation has yielded scarce and inconsistent findings. This study examined the role of participative leadership in a team as a boundary condition of the effectiveness of organizational affective commitment predicting employee innovation. Data were collected from 343 employees in 34 teams from different Italian companies. The results from hierarchical linear modelling analysis indicated that the relationship between organizational affective commitment and employee innovation was stronger when team-level participative leadership was high. Our findings provide meaningful insights regarding the co…

The pragmatics of political messages in twitter communication

2012

The aim of the current paper is to formulate a conception of pragmatic patterns characterizing the construction of individual and collective identities in virtual communities (in our case: the Twitter community). We have explored several theoretical approaches and frameworks and relevant empirical data to show that the agents building virtual communities are 'extended selves' grounded in a highly dynamic and compressed, linguistically mediated virtual network structure. Our empirical evidence consists of a study of discourse related to the Latvian parliamentary elections of 2010. We used a Twitter corpus (in Latvian) harvested and statistically evaluated using the Pointwise Mutual Informati…

Impacts of Emotional Intelligence and Leadership on Motivation in the German Hotel Industry

2016

This paper aims to clarify the role of leadership and emotional intelligence in the motivational process of employees in the hotel industry. A review of relevant literature is done before a tentative model is presented to experts from the fields of leadership, emotional intelligence and the hotel industry to get their view on the constructed relations. After having been approved by the experts, the model has been tested with structuring equation modelling (SEM) based on a quantitative research among employees and leaders of the hotel industry in Germany. The positive relation among leadership and motivation as well as the moderating effect of emotional intelligence could be substantiated.