The role of feedback in e-assessments for engineering education     

Maria Limniou  Michael Smith 《Education and Information Technologies》2014,19(1):209-225

The aim of this investigation was to compare two differently designed e-assessments (formative assessments) which supported the same engineering courses for two academic years. In this investigation two group of students participated (Control Group: CG and Experimental Group: EG). The teachers followed exactly the same teaching approach using the same learning tools (apart from the e-assessments) in the same learning environment. The first group of students (CG) had the opportunity to timely receive grades along with the correct answers, when they submitted the e-assessments on-line. The teachers themselves designed these e-assessments in BlackBoard Vista© learning environment. The second group of students (EG) had the opportunity to receive feedback each on their own individual responses having unlimited attempts to participate in the e-assessments designed by PhD students. We will demonstrate that the addition of individual feedback and the unlimited attempts increased the EG group performance at the end of the courses (summative assessment) in comparison to the CG group of students.  相似文献   

Implementing VuFind: A Public Library Improves Electronic Search Quality and Saves Searcher Time     

Maria K. Burchill  Nathaniel Rasmussen 《Public Library Quarterly》2014,33(1):76-82

Web-scale discovery services (WSDs) are a widespread phenomenon sweeping university libraries across the world. In this article the authors discuss this trend and their experience working on a test server with the open source discovery layer VuFind. Developed by Demian Katz of Villanova University, VuFind’s potential to index not only the library’s catalog but also proprietary databases through the integration of application program interfaces (APIs) offers public libraries the opportunity to develop a seamless website-to-catalog experience, thereby building a true virtual branch for their patrons.  相似文献   

La Medusa by Caravaggio: characterisation of the painting technique and evaluation of the state of conservation     

Monica Favaro  Pietro A. Vigato  Alessia Andreotti  Maria Perla Colombini 《Journal of Cultural Heritage》2005,6(4):295-305

The oil painting “La Medusa” executed by Caravaggio at the end of the XVI century on a wooden shield, was investigated by integrated physical–chemical and analytical methodologies in order to obtain scientific data capable of elucidating the state of conservation and the painting technique. Optical (OM) and electronic (SEM-EDS) microscopy, micro-FT-IR spectroscopy, gas chromatography–mass spectrometry (GC–MS) and pyrolysis GC–MS were applied on two microfragments and some organic samples obtained by solvent extraction using the swab cleaning technique. The obtained results indicated that Caravaggio probably reused an old shield as a previous gypsum preparation layer has been detected under the original painting layers. He used white lead, natural earths, verdigris and lead–tin yellow type I mixed with drying oils to paint. The considerable amount of amorphous particles of copper chlorides found in the green pigment verdigris suggests that it could have been produced according to the ancient recipe of verde salsum described by Theophilus. Mordant gilding has been identified on the upper part of the shield that can be related to an abandoned experiment to give the painting a mirror-like reflecting effect. Three different varnishes layers have been detected above the painted surface. The original and restoration varnishes have been identified and they contain a mixture of drying oil, mastic and turpentine and some beeswax. Cleaning tests, performed with different organic solvents, suggest the use of isopropyl alcohol as cleaning agent because it is less efficient in comparison to others solvents; thus it ensures a careful and controlled removal of the varnishes.  相似文献   

The interplay between spontaneous writing and underlying linguistic representations     

Abaurre  Maria Bernadete M. 《European Journal of Psychology of Education - EJPE》1988,3(4):415-430

European Journal of Psychology of Education - The paper discusses the importance of incorporating naturalistic data from spontaneous written texts in language acquisition research in general, and...  相似文献   

Active relatives and health-related physical fitness in European adolescents: The HELENA Study     

M Martín-Matillas  FB Ortega  JR Ruiz  D Martínez-Gómez  G Vicente-Rodríguez  A Marcos  L Béghin  A Kafatos  M González-Gross  M Zaccaria  D Molnár  S De Henauw  M Sjöström  LA Moreno  MJ Castillo On Behalf Of The Helena Study 《Journal of sports sciences》2012,30(13):1329-1335

Abstract High physical fitness in childhood and adolescence is positively associated with favourable health-related outcomes. Our aim was to examine the relationship between relatives' (father, mother, brother, sister, and best friend) physical activity engagement and encouragement on adolescents' physical fitness. Adolescents were part of the HELENA study, a multi-centre study conducted in 10 cities from nine European countries in 2006-2008. Participants were 3288 adolescents (48% boys, 52% girls) aged 12.5-17.5 years with valid data on at least one of the three fitness variables studied: muscular strength (standing long jump), speed/agility (4×10 m shuttle run), and cardiorespiratory fitness (20 m shuttle run). The adolescents reported their relatives' physical activity engagement and encouragement. Analysis of covariance showed that relatives' physical activity engagement (father, mother, brother, and best friend) was positively related to cardiorespiratory fitness (P?相似文献   

Research and development, cash flow, agency and governance: UK large companies     

Ciaran Driver  Maria João Coelho Guedes 《Research Policy》2012,41(9):1565-1577

This paper investigates the determinants of R&D expenditure using a sample of UK listed companies with the highest spend from 2000 to 2005. We investigate the effect of corporate governance and ownership on R&D, using panel data. The results provide some evidence that more governance tends to depress R&D activity, a finding that is robust to whether a composite or disaggregated index of governance is used. One innovation of the paper is that we treat agency and finance effects interactively. The ownership stake of the CEO appears to be supportive for R&D.  相似文献   

Does sensorimotor training improve the static balance of young volleyball players?     

Pau M  Loi A  Pezzotta MC 《Sports biomechanics / International Society of Biomechanics in Sports》2012,11(1):97-107

The aim of this investigation is to assess the effectiveness of a 6-week balance training (BT) protocol, integrated in regular training sessions, on postural sway of young female volleyball players (n = 26, age 13.0 +/- 0.2 years) divided into two groups (intervention and control; 13 per group). Trials were performed for bipedal and unipedal stance conditions before and after the BT protocol, using a pressure platform to collect center-of-pressure (COP) time series that were processed to calculate sway area, COP path length, and maximum displacement range in anteroposterior and mediolateral directions. The intervention group exhibited smaller sway areas in eyes closed conditions (intervention = 42.76 mm2, control = 67.60 mm2; p < 0.05) and Romberg quotients (intervention = 1.11 mm, control = 1.82 mm) in bipedal stance, while all the other parameters were unaffected. BT also reduced sway area (intervention = 122.70 mm2, control = 187.18 mm2) and anteroposterior COP displacements (intervention = 20.18 mm, control = 22.38 mm) of the non-dominant limb for single-leg stance. No significant change was found for the dominant limb. Although it is possible to hypothesize a beneficial effect of BT on young athletes, further investigations are required to clarify its actual effect on balance performance with respect to normal volleyball training.  相似文献   

An analytical investigation of the painting technique of Italian Renaissance master Lorenzo Lotto     

Kamilla B. Kalinina  Ilaria Bonaduce  Maria Perla Colombini  Irina. S. Artemieva 《Journal of Cultural Heritage》2012,13(3):259-274

This paper presents the first extensive investigation of the composition of both the organic and inorganic media used by Lorenzo Lotto, one of the outstanding artists of the Italian Renaissance in the early 16th century. By investigating four paintings from The State Hermitage Museum collection (Saint-Petersburg, Russia), new insights into the artist's painting techniques were obtained, which contribute to our understanding of the transition from egg tempera to oil painting techniques that took place in Italian paintings between the 15th to the mid 16th century. Inorganic materials were determined using SEM-EDX and PLM, revealing information on the artist's palette. Of particular note was the powdered colourless glass found in the priming layer of the Madonna delle Grazie, which was most likely used as dryer. Organic materials were analysed in individual paint layers using GC-MS, and revealed a mature use of drying oils as paint binders, skilfully mixed with other organic materials and inorganic driers, to obtain the desired aesthetical and technical qualities of the paint. The study revealed that Lotto used the tempera grassa technique through most of his creative life.  相似文献   

EditorialKeeping information centre stage amid changing scenery     

Maria J Grant 《Health information and libraries journal》2010,27(2):91-92

With conference season upon us, consideration is given to the importance of subject‐specific and library association conferences. The biennial Health Libraries Group (HLG) conference meets both these criteria and takes place in Greater Manchester in July. The conference provides an opportunity for peer‐to‐peer learning, identifying new trends and professional rejuvenation. An open invitation is given to attend the Health Information and Libraries Journal‘Writing for Publication’ workshop at the HLG conference. An overview of three bursaries available from the Health Libraries Group and Library and Information Research, both groups of the UK Chartered Institute of Library and Information Professionals (CILIP) is provided. The bursaries offer opportunities to cover the costs of registration and travel expenses to national and international conference.  相似文献   

Teacher change: ideas emerging from a project for the teaching of university mathematics     

Maria Trigueros  Maria-Dolores Lozano 《Teaching in Higher Education》2013,18(7):699-710

This paper reports the changes that occurred in the didactic approaches of three professors who participated in a project intended to develop new ways of teaching mathematics to second year university students. An enactivist perspective is used to address the process of change that emerged as a result from interactions during project meetings. We describe changes in the participants' actions by looking at data obtained from the meetings and the classrooms. Teachers were able to ‘see more’ and modify their teaching practices incorporating a more open and flexible approach in accordance to their structural state which depended on their previous history. Therefore, the results varied. It was possible to observe, however, similar changes in all members of the group which included the use of vocabulary from learning theories and the inclusion of in-depth reflections on teaching and learning.  相似文献