Transient agalactia in ewes

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The Bullwhip effect in complex supply chains

This paper reviews the various methods of modelling the dynamics of supply chains. We then present recently documented causes of the Bullwhip effect in production supply chains, and the methodologies used to describe and measure the importance of these causes. We examine the limitations of these methodologies and suggest a combined approach discrete event-continuous simulation modelling approach to further study this phenomenon in complex production supply chains

APPLYING ATTRIBUTION THEORY TO IS RESEARCH AS A PRACTICAL METHOD FOR ASSESSING POST-ADOPTION BEHAVIOUR

Researchers and practitioners alike see great valu in understanding the implementation, adoption, and use of technology, and acknowledge the need to better understand post-adoption behaviour. Among theories that explain and predict human behaviour, attribution theory is recognised for its extensive investigation of behaviour´s antecedents and consequnces. This paper provides an overview of the theory, suggests a practical method for using it in IS contexts, and shows evidence that this method provides meaningful results. In order to address the complexities encountered in field-work, this paper argus that system-usage can be treated as an interpersonal relationship between the user and the system. This perspective allows us to draw on extensive knowledge gained in the field of interpersonal relationships research, in particular a relationship diagnostics method that uses interview data, followed by an analysis of the attributions mentioned in the interviews. The paper provides evidence from a study that successfully used attribution theory in this way to investigate a non-interpersonal relationship “ an employee-organisation relationship. The paper concludes with suggestions for future research in IS based on this method

Beyond static assessment of children's receptive vocabulary: the dynamic assessment of word learning (DAWL)

Background: Children's low scores on vocabulary tests are often erroneously interpreted as reflecting poor cognitive and/or language skills. It may be necessary to incorporate the measurement of word-learning ability in estimating children's lexical abilities. Aims: To explore the reliability and validity of the Dynamic Assessment of Word Learning (DAWL), a new dynamic assessment of receptive vocabulary. Methods & Procedures: A dynamic assessment (DA) of word learning ability was developed and adopted within a nursery school setting with 15 children aged between 3;07 and 4;03, ten of whom had been referred to speech and language therapy. Outcomes & Results: A number of quantitative measures were derived from the DA procedure, including measures of children's ability to identify the targeted items and to generalize to a second exemplar, as well as measures of children's ability to retain the targeted items. Internal, inter-rater and test–retest reliability of the DAWL was established as well as correlational measures of concurrent and predictive validity. Conclusions & Implications: The DAWL was found to provide both quantitative and qualitative information which could be used to improve the accuracy of differential diagnosis and the understanding of processes underlying the child's performance. The latter can be used for the purpose of designing more individualized interventions

Rights, Respect and Responsibilities Online - Reflections and Efficacy

Demands for moral development are increasing in business and professional training. Mixed results of diversity training programs in the higher education sector suggest that innovative approaches are required for preparing students to become morally upright leaders and teachers. This research looks at the implementation of an online interactive tutorial that focuses on students working and learning together with others from a variety of diverse backgrounds. The study comprises a three-year investigation on the attitudes and understandings of students prior to a group work assessment task, and after completing the online tutorial. First year primary education students (n=594) completed pre- and post-surveys on their perspective of working with others, with a moderating educational intervention. Results revealed mixed views about the value of the program to this generation of students. We make suggestions for institutions of higher education to consider when creating diversity training and support for university students

Online volunteering at DigiVol: an innovative crowd-sourcing approach for heritage tourism artefacts preservation

Most museums find that the resources required to transform from curators into providers of heritage and cultural tourism exceed those available to them. One way of addressing this challenge is through volunteer programs to assist in heritage tourism artefacts preservation. This article is based on a case study of an innovative crowd-sourcing initiative of integrating on-site and online volunteers for the preservation and documentation of heritage artefacts: the DigiVol program at the Australian Museum, Sydney. This large citizen science volunteer program has digitised an unprecedented portion of the museum’s collections and has been recognised in Australia and internationally as a best practice ‘volunteer digitisation service’ model. Seeking further empirical support for the emerging concept of ‘recruitability’ from the volunteering literature (i.e. the ability of volunteer organisations to recruit and retain volunteers), this research used case study methodology. Based on interviews, focus groups, and document analyses, the article identifies key elements of innovation and effectiveness in DigiVol practices. The article concludes with recommendations for programs wishing to follow best practice and expand their recruitability, to digitise and preserve artefacts, and therefore support science, tourism and education

The effects of theta-gamma peak stimulation on sensorimotor learning during speech production

Transcranial alternating current stimulation (tACS) is a non-invasive neuromodulatory tool that is thought to entrain intrinsic neural oscillations by supplying low electric currents over the scalp. Recent work has demonstrated the efficacy of theta-gamma phase-amplitude coupled tACS over primary motor cortex to enhance motor skill acquisition and motor recovery after stroke. Here, we wished to assess the efficacy of tACS delivered with 75-Hz gamma coupled to the peak of a 6-Hz theta envelope (theta-gamma peak; TGP) at an intensity of 2 mA peak-to-peak to enhance sensorimotor learning during speech production. Sensorimotor learning was measured by shifting the formant frequency of vowels in real-time as speech is produced and measuring the adaptation to this altered feedback. The study was a between-subjects, single-blind, sham-controlled design. We hypothesised that participants who performed the speech task while receiving TGP tACS over the speech motor cortex (N = 30) would show greater adaptation to altered auditory feedback than those receiving sham stimulation (N = 31). Contrary to this hypothesis, there was no effect of TGP tACS on adaption to the upwards F1 shift in auditory feedback in either the final 30 trials of the learning phase or in the first 15 trials of the after-effect phase. However, a trend emerged in the TGP tACS group for greater retention of the adapted state and slower return to baseline F1 values in the after-effect phase. This finding was not predicted, and highlights the need for further investigation to deepen our understanding of the effects of TGP tACS on speech motor learning