Valid inferences of teachers’ judgements of pupils’ reading literacy: does formal teacher competence matter?

The primary aim of this study was to investigate whether and, if so, how formal teacher competence relates to the relationship between pupil reading achievement and teachers judgements’ of pupils’ reading achievement. The data come from the Swedish participation in the Progress in International Reading Literacy Study (PIRLS) 2001 in Grade 3. Information was obtained from pupils (N = 5271) and teachers (N = 351). Analyses were conducted using multilevel structural equation modeling (SEM) with random slopes. Teacher competence was operationalized using multiple observed indicators and defined as a latent variable. A higher correspondence between teacher judgements and pupil reading achievement for teachers with higher competence was found. The results highlight the importance of teacher competence in assessment practice.     

Kinematic differences of elite and high-performance tennis players in the cross court and down the line forehand

This study identified and compared the full body kinematics of different skill levels in the forehand groundstroke when balls were hit cross court and down the line. Forty-three three-dimensional retro-reflective marker trajectories of six elite and seven high-performance players were recorded using an eight-camera 400 Hz, Vicon motion analysis system. The six highest horizontal velocity forehands with reliable kinematics of all participants were analysed for each specific situation (a total of 156 analysed shots). Significant differences (p < 0.01) and large effect sizes were observed between elite and high-performance players in linear velocity of the shoulder (2.0 vs. 1.2 m/s), angular velocity of the pelvis (295 vs. 168 °/s), and angular velocity of the upper trunk (453 vs. 292 °/s) at impact. The elite group showed a tendency towards higher racquet velocities at impact (p < 0.05). No significant differences were found in angular displacement of the racquet, hip alignment, or shoulder alignment at the completion of the backswing; nor did angular displacement vary significantly at impact. Irrespective of the group, different shoulder, hip, and racquet angles were found at impact, depending on the situation. The results should assist coaches when striving to improve their players' forehand.     

A plea for mixed methods approaches in research on teaching in physical education

Research on teaching in Physical Education (RT-PE) comprises a great deal of complex phenomena. These can be understood at a more profound level by using mixed methods research approaches (MMR). Hence, the aim of this paper is to analyze potentials and limitations of mixed methods research in RT-PE, also trying to generate an additional value for MMR.     

Grasping the dynamic complexity of team learning: An integrative model for effective team learning in organisations

In this article we present an integrative model of team learning. Literature shows that effective team learning requires the establishment of a dialogical space amongst team members, in which communicative behaviours such as ‘sharing’, ‘co-construction’ and ‘constructive conflict’ are balanced. However, finding this balance is not enough. Important questions such as ‘communicating about what?’, ‘communicating with whom?’ and ‘communicating for what?’ remain crucial. Five other process variables ‘team reflexivity’, ‘team activity’, ‘boundary crossing’, ‘storage’ and ‘retrieval’ are identified. Besides the core process variables, our model organises the most important inputs, catalyst emergent states and outputs of team learning.     

Expression of a fusion protein of human ciliary neurotrophic factor and soluble CNTF-Receptor and identification of its activity

Ciliary neurotrophic factor (CNTF) has pleiotropic actions on many neuronal populations as well as on glia. Signal transduction by CNTF requires that it bind first to CNTF-R, permitting the recruitment of gp130 and LIF-R, forming a tripartite receptor complex. Cells that only express gp130 and LIF-R, but not CNTF-R are refractory to stimulation by CNTF. On many target cells CNTF only acts in the presence of its specific agonistic soluble receptors. We engineered a soluble fusion protein by linking the COOH-terminus of sCNTF-R to the NH₂-terminus of CNTF. Recombinant CNTF/sCNTF-R fusion protein (Hyper-CNTF) was successfully expressed in COS-7 cells. The apparent molecular mass of the Hyper-CNTF protein was estimated from western blots to be 75 kDa. Proliferation assays of transfected BAF/3 cells in response to CNTF and Hyper-CNTF were used to verify the activity of the cytokines. The proliferative results confirmed that CNTF required homodimerization of the gp130, CNTF-R and LIF-R receptor subunit whereas Hyper-CNTF required heterodimerization of the gp130 and LIF-R receptor subunit. We concluded that the fusion protein Hyper-CNTF had superagonistic activity on target cells expressing gp130 and LIF-R, but lacking membrane-bound CNTF-R. Project supported by the Scientific Research Foundation for the Returned Overseas Chinese Scholar, Zhejiang Province, China and SFB415, TP B5, Germany.     

Formal Teacher Competence and its Effect on Pupil Reading Achievement

The main aim of this study was to investigate the impact of formal teacher competence on pupils' reading achievement. The data comes from the Swedish participation in PIRLS 2001 in grade 3. Information was obtained from pupils (n = 5271) and teachers (n = 351). The analyses were conducted using 2-level structural equation modeling. Teacher competence was operationalized with multiple observed indicators and defined as a latent variable. Two measures of achievement were used: PIRLS 2001 reading test results and teacher judgement of pupil performance in the Swedish language. The results reveal that teacher competence was positively and similarly related to both achievement measures. No selection effects in terms of pupil socioeconomic status were found. The current study provides evidence for a strong impact of teacher competence on pupil reading achievement.     

水文预报的时间序列神经网络模型

时间序列分析在水文预报中起重要作用 ,其关键是要建立一个合适的预报模型 .文章提出基于 BP算法的单输出和多输出水文预报时间序列神经网络模型 ,克服了以往多种基于随机分析预报模型的缺点 ,不仅能实现快速灵活的信息处理 ,而且具有很强的非线性映射和自学习、自适应能力 ,这为更精确描述复杂非线性水文过程提供了可能 .通过对历史数据的学习 ,模型可对水文径流量时间序列进行预报 ,两个实例分析表明模型的可行性和有效性     

The Development of Word‐decoding Skills in Young Readers

Most of the research on the acquisition of word‐decoding skills has almost exclusively focused on the ability to read words in isolation. The purpose of this article is to extend our knowledge to the independent role of phonological and orthographic word‐decoding skills in the reading tasks which children encounter in school. The data were quite consistent with the general core of models suggesting that children first become proficient in phonological decoding then gradually shift towards a more direct orthographic‐decoding strategy. As such, these findings have helped to generalize models of the acquisition of word‐decoding skills to reading comprehension.     

Developing CM3: Maintainers' Education and Training at ABB

A highly skilled maintainer is the most important organisational asset pivotal for achieving quality software, strategic for improving maintenance and development processes, essential for remaining competitive and critical for business survival. This requires that universities properly prepare students to enter the maintenance workforce and that maintenance organisations actively build and maintain their human knowledge and skill base. In this paper, we present Corrective Maintenance Maturity Model (CM 3): Maintainers' Education and Training – a maturity model for educating and training maintenance engineers within corrective maintenance. This model is presently being developed at ABB by the Software Maintenance Laboratory (SML). Our goal is to provide guidance to ABB and industrial organisations worldwide in the process of building or improving their most important asset – people. Each process element presented in this paper is matched against its corresponding process element at ABB. Hence, this paper may also be regarded as a report on the state of the current practice of educating and training maintainers at ABB.