School climate,principal support and collaboration among Portuguese teachers

This article analyses the relationship between school principal support and teacher collaboration among Portuguese teachers. Data were collected from a random sample of 234 teachers in middle and secondary schools. The use of a combined approach using linear and multiple regression tests concluded that the school principal support, through the influence of the variables ‘emotional and informational support’ and ‘support for professional development’, can predict teacher’s involvement in collaboration. This global data is discussed in light of a theoretical framework and compared to data from previous research. The implications of the main findings are discussed and some recommendations are made.     

Electromyographic analysis of lower limb muscles during the golf swing performed with three different clubs

The aim of this study was to describe and compare the EMG patterns of select lower limb muscles throughout the golf swing, performed with three different clubs, in non-elite middle-aged players. Fourteen golfers performed eight swings each using, in random order, a pitching wedge, 7-iron and 4-iron. Surface electromyography (EMG) was recorded bilaterally from lower limb muscles: tibialis anterior, peroneus longus, gastrocnemius medialis, gastrocnemius lateralis, biceps femoris, semitendinosus, gluteus maximus, vastus medialis, rectus femoris and vastus lateralis. Three-dimensional high-speed video analysis was used to determine the golf swing phases. Results showed that, in average handicap golfers, the highest muscle activation levels occurred during the Forward Swing Phase, with the right semitendinosus and the right biceps femoris muscles producing the highest mean activation levels relative to maximal electromyography (70–76% and 68–73% EMG_MAX, respectively). Significant differences between the pitching wedge and the 4-iron club were found in the activation level of the left semitendinosus, right tibialis anterior, right peroneus longus, right vastus medialis, right rectus femuris and right gastrocnemius muscles. The lower limb muscles showed, in most cases and phases, higher mean values of activation on electromyography when golfers performed shots with a 4-iron club.     

Three-dimensional kinematics of competitive and recreational cyclists across different workloads during cycling

Although the link between sagittal plane motion and exercise intensity has been highlighted, no study assessed if different workloads lead to changes in three-dimensional cycling kinematics. This study compared three-dimensional joint and segment kinematics between competitive and recreational road cyclists across different workloads. Twenty-four road male cyclists (12 competitive and 12 recreational) underwent an incremental workload test to determine aerobic peak power output. In a following session, cyclists performed four trials at sub-maximal workloads (65, 75, 85 and 95% of their aerobic peak power output) at 90?rpm of pedalling cadence. Mean hip adduction, thigh rotation, shank rotation, pelvis inclination (latero-lateral and anterior–posterior), spine inclination and rotation were computed at the power section of the crank cycle (12 o'clock to 6 o'clock crank positions) using three-dimensional kinematics. Greater lateral spine inclination (p?p?p?相似文献   

Public education and student movements: the Chilean rebellion under a neoliberal experiment

Abstract

Chile is recognized in the educational policy field as one of the first laboratories of neoliberal initiatives. These policies, initiated under the dictatorship of Augusto Pinochet, did not change with the new democratic governments after 1990. This characteristic led international organizations to promote the Chilean policies in different contexts in Latin America and beyond. In 2006, a high school student movement occupied public and private schools, demystifying the outcomes of these policies. A new wave of demonstrations took place in 2011, with a college student leadership that paralyzed a significant amount of universities and schools throughout the country. After both waves of mobilizations, the political system opened the process of policy-making that considered the demands of social movements. In this article, we explore the dynamics between educational policies and social student movements in Chile, and the possibilities of change in favor of public education.     

Portuguese spelling in primary grades: complexity,length and lexicality effects

Reading and Writing - This study investigates spelling abilities of 189 second, third, and fourth graders using a word and pseudoword dictation task in European Portuguese. We analyzed the effect...     

The historic approach in teaching: Analysis of an experience

The main purpose of this paper is to report our first attempts to study how and where it is possible to use the history of physics in a high school course. We made four activities based on historical data connected to heat and temperature. Filming was extremely important for the type of study we made since it allowed to draw out the situations we considered most relevant whenever necessary. We selected and analysed all the episodes in which there was any allusion (explicit or not) to history, presented in the form of questions or doubts, or portraying explanations of facts and phenomena built up based on reconstructions provided by the historical approach.     

The link between executive functions and literacy: introduction

This special issue was born within the M2S Project (Mindfulness to students’ success: Relating executive functions and writing through a mindfulness app to promote children’s cognitive, social, and health-related outcomes) to call researchers and practitioners’ attention to the role that executive functions play on the acquisition and development of literacy skills, a neglected topic in the field. The selected papers include various methods and techniques to examine the relationships between literacy and executive functions across languages/cultures and different age groups, with and without disabilities.

     

V + H: Hybrid architecture for DSS and OLTP

Previous research has been done to identify the best pragmatic approach that DBMSs must follow to manage different workloads. Some approaches have followed the “One size fits all” approach, trying to incorporate all features in a row-oriented DBMS (also called horizontal) to manage both OLTP and DSS workloads. Additionally, there have been specialized DBMS, following a columnar approach (also called vertical), that focuses on the growing demand to efficiently manage DSS workloads. This paper proposes a combination of both vertical and horizontal DBMS to best manage OLTP and DSS workloads. We have used mature, commercially available products from a single vendor and developed a custom middleware Decision Query Module that identifies the best option for most efficient execution of a query. This V + H architecture also offers the functionality of a mirrored DB without paying twice for storage.     

Development of Manager‐Academics at Institutions of Higher Education in Catalonia

Managers at Spanish universities are having to deal with increasingly complex managerial tasks as a result of current changes in higher education. This paper presents the results of a study into the professional development of deans and department heads at universities in Catalonia. At management level, these universities are typically based on an elected, rotating model rather than an appointed or permanent one. The findings from 23 qualitative interviews and a focus group identified three phases in the development of academic management: learning and contextualization, development of functions, and the institutional projection and transmission of management tasks.     

The Effect of Enrolling in Minority Serving Institutions on Earnings Compared to Non-minority Serving Institutions: A College Scorecard Analysis

Research in Higher Education - As policymakers along with students and families demand information related to the return on investment in postsecondary education, it is critical to empirically...