Using 3D digital models for the virtual restoration of polychrome in interesting cultural sites

In most cases, the polychrome paintings that decorated heritage buildings no longer exist or are reduced to mere remnants. These facts decontextualize the sites in their historical and artistic evolution, distort the intention under which they were conceived, and hamper their accomplishment. Current recovery methods are restricted to the stabilization of the remains in their present status, requiring a lot of completely manual work that is expensive and almost unrelated to the use of new technologies. Three-dimensional digitalization and modelling is proved to be the basis for the virtual recovery of paintings in a significant edifice. To do so, an innovative methodology is presented that allows the 3D geometric information of a site (captured using a laser scanner) to be combined with specially designed 2D artistic images. The resulting 3D digital models can then be focused, with high efficiency projectors, on the equivalent area of the original site, and also used as raw material to compose a video-projection without perspective effects to emulate, with due rigour, the primitive appearance, its evolution along time, the effects of the deterioration, or other interesting aspects. The results obtained at Sta. María de Mave (Palencia, Spain) are presented, supporting the potential of this new methodology not only as a scientific way to discuss possible restoration hypotheses with experts or as a didactic tool for narrating the historical evolution of a monument, but also as a spectacular show for tourists.     

Reconciling before educating? Narratives of conflict and peace among teachers in Côte d’Ivoire

While teachers are generally perceived as positive agents of change in post-conflict countries, recently researchers have started questioning teachers’ ability and willingness to teach ‘peace’ after conflict. The vast majority of these studies have been qualitative in nature. The current paper makes an important contribution to this debate by analysing quantitatively how teachers’ narratives of the violent past affect their teaching practices in Côte d’Ivoire, a country that emerged from violent conflict in 2011. Drawing on a survey conducted among secondary school teachers (n = 984) in Abidjan, we show that teachers remain sharply divided along ethno-political lines concerning their perceptions of the past conflict and current peace and reconciliation process. There also exists a potentially problematic relation between these narratives and teachers’ teaching practices: Teachers in support of the narrative associated with the current government seem much more willing to discuss their country’s violent past in the classroom than others.     

Assessing attitudes towards mutual acculturation in multicultural schools: Conceptualisation and validation of a four-dimensional mutual acculturation attitudes scale

Assessment of acculturation attitudes usually has focused on the importance of two dimensions: first, immigrants’ maintenance of cultural heritage and, second, immigrants’ adoption of the majority culture. Because acculturation is a reciprocal interaction, we extended a bidimensional scale to four dimensions to assess mutual acculturation. Given the importance of the social context for acculturation and schools as a crucial context for immigrant pupils’ acculturation, the scale extension was validated within the context of school. We hypothesised that acculturation attitudes are held not only towards immigrant pupils but also towards native pupils and towards schools’ responsibility to support intercultural contact. The study sample comprised 364 secondary school pupils in Swiss multicultural schools. Using exploratory structural equation modelling, we validated four distinct dimensions of acculturation attitudes: attitudes towards immigrant pupils’ (a) heritage culture maintenance and (b) adoption of the dominant culture and attitudes towards (c) native pupils acquiring cultural knowledge and (d) schools enabling intercultural contact. We conclude that the proposed four-dimensional scale is a valid tool for assessing attitudes towards mutual acculturation within the school context and that acculturation attitudes are held not only towards immigrant pupils but also towards native pupils and schools.     

Development of an item bank for assessing generic competences in a higher-education institute: a Rasch modelling approach

This paper describes the development and validation of an item bank designed for students to assess their own achievements across an undergraduate-degree programme in seven generic competences (i.e., problem-solving skills, critical-thinking skills, creative-thinking skills, ethical decision-making skills, effective communication skills, social interaction skills and global perspective). The Rasch modelling approach was adopted for instrument development and validation. A total of 425 items were developed. The content validity of these items was examined via six focus group interviews with target students, and the construct validity was verified against data collected from a large student sample (N?=?1151). A matrix design was adopted to assemble the items in 26 test forms, which were distributed at random in each administration session. The results demonstrated that the item bank had high reliability and good construct validity. Cross-sectional comparisons of Years 1–4 students revealed patterns of changes over the years. Correlation analyses shed light on the relationships between the constructs. Implications are drawn to inform future efforts to develop the instrument, and suggestions are made regarding ways to use the instrument to enhance the teaching and learning of generic skills.     

创新能力的培养与数学教学

数学教学要从传授、继承已有知识为中心的传统教育,转变为以学习者为中心,着重培养学生创新精神的现代教育,形成以主动参与、积极探索、主动思考,主动创造为基本学习方式的新型教学过程,为学生将来具有一定的创新能力打下基础。     

设计素描探微

设计素描是近年来在设计艺术领域里设置的一门新的基础课程，在实践和理论上仍处于探索阶段。设计素描要注重培养造型意识和审美能力，并将设计思维贯穿于整个素描中。     

Postgraduate student satisfaction: A multilevel analysis of PTES data

Student satisfaction has received growing attention in Higher Education systems in recent years, and are increasingly used for internal and external accountability in the sector. This does leave us with questions on the extent to which variance in student satisfaction can be explained by Higher Education Institution (HEI) and course attended rather than by individual student characteristics; and on what factors may predict student satisfaction. In this study we used the Postgraduate Taught Experience Survey (PTES) to look at these questions in a sample of approximate 70000 UK postgraduate students from 100 HEI's. Firstly, confirmatory factor analyses were used to test the validity of the proposed multidimensional structure of student satisfaction in PTES. Then multilevel models were used to look at variance at three levels (HEI, course and student), and the relationships between institutional and student factors collected in PTES and student satisfaction. Two years of data (2014 and 2015) were used. Findings suggest that over 90% of variance is explained at the student level for all dimensions of student satisfaction in both years, with variance at the HEI level being particularly low. Individual student characteristics explain more variance than institutional characteristics, but only some (such as BME status) are significant, and explained variance is low. These findings suggest using student satisfaction as an accountability measure in HE may be highly problematic.     

如何完善中职学校会计模拟实验教学的若干思考

为适应现代社会对会计人才的需求,中职学校应完善和加强会计模拟实验教学．针对目前中职学校会计模拟实验存在的问题提出相应对策．加强会计监督职能的操作训练;丰富会计模拟实验材料的内容;手工实验与电算化实验并重;提高教师的业务水平,建设高水平的“双师型”师资队伍．     

Secondary students’ modelling conceptualisation in situations related to particle dynamics: a clinical perspective

This study investigates the modelling conceptualisation of secondary school students in two situations related to particle dynamics: pendulum’s motion and horizontal motion. We performed in-depth clinical interviews with secondary school students (N?=?10). Participants’ ideas about properties which are not ‘given’ in empirical observations were explored in order to investigate signs of abstractions and idealisations in their reasoning processes. We proposed contributions to modelling in science education based on Mario Bunge’s epistemology and we employed his basic concepts as the axis to analyse our results: (1) abstractions and idealisations, considered as thought processes required to build conceptual counterparts of concrete objects; (2) theoretical models, meaning hypothetico-deductive systems concerning those conceptual objects; and (3) general theoretical frameworks that allow us to derive those theoretical models. We developed our analysis viewing the ideas presented by participants as concepts-in-action and theorems-in-action as regarded by Gérard Vergnaud’s Theory of Conceptual Fields. Results indicated a gradation in the concepts-in-action mobilised in terms of levels of idealisation and showed that participants do not spontaneously recognise the use of a general theory as a possible way to obtain a theoretical model. These results suggest that science education practices must pay better attention to make abstractions and idealisations explicit in scientific concepts formation, as well as to the heuristic role of theories in model construction.     

Enhancing student teachers’ epistemological beliefs about models and conceptual understanding through a model-based inquiry process

In this study we present the structure and implementation of a model-based inquiry teaching–learning sequence (TLS) integrating expressive, experimental and exploratory modelling pedagogies in a cyclic manner, with the aim of enhancing primary education student teachers’ epistemological beliefs about the aspects, nature, purpose and change of models as well as their conceptual understanding of light phenomena related to properties of optical fibres. The subjects were 16 prospective primary teachers involved in modelling activities, employing both hands-on experiments and computer modelling activities, based on the application of the ray model. Student teachers were tested before and after the implementation of the TLS by semi-structured interviews and a written questionnaire. Results show that before the TLS most students adopted epistemologically naïve realistic beliefs about models, whereas after the TLS there was an overall significant transition from naïve to more sophisticated epistemological beliefs, as well as significant improvements in their conceptual knowledge about light phenomena. Nevertheless, the relation between epistemological beliefs and conceptual understanding seems to be aspect-dependent, so our evidence suggests that more educational effort is required in order to establish a coherent relationship between them.