40,222 research outputs found

    Irregular Migration and Asylum Seekers in the Caribbean

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    migration, irregular migration, Caribbean population, asylum

    Measuring power

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    This paper focuses on dynamics within couples, although the authors recognize that dynamics among extended family members and across generations are of substantial interest. Decisions about resource allocations, control over economic resources, whether and how much one works, are all examined.Households. ,Resource allocation. ,Labor. ,Gender. ,

    Smoothing of rational m-ropes

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    In a recent paper, Gallego, Gonz\'{a}lez and Purnaprajna showed that rational 3-ropes can be smoothed. We generalise their proof and obtain smoothability of rational mm-ropes for m3m \geq 3.Comment: As accepted for publication (6/7 pages A4/letter

    Freshwater Pearl Mussel (Margaritifera Margaritifera) Host Choice and Behavioural Responses to Changes in Flow Regime

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    The endangered freshwater pearl mussel (Margaritifera margaritifera), one of the longest-lived invertebrates, are threatened globally. Scotland, UK, remains a stronghold, however even here the population is declining due to factors such as habitat degradation, pollution and pearl fishing. The study comprised two parts: field surveys of glochidia infection of host salmonid fish, and a novel laboratory flume based study of the mussel‟s behavioral responses to changes in flow regime. The intricate life cycle of M.margaritifera includes a parasitic stage as glochidia attached to gills of salmonids. The preferred host in Scotland is thought to be Salmo salar and Salmo trutta in the absence of S.salar. This has not, however, been empirically tested in the field. Eight rivers in NW Scotland were surveyed using standard electrofishing techniques and encysted glochidia counted. Results suggest S.trutta is the primary host fish for glochidia attachment in the rivers surveyed, which contradicts current accepted knowledge about host specificity of M.margaritifera. Mussel populations are often found in regulated rivers, however little data exists on response to changes in flow regime. The mussel's behavioral response to changes in flow were investigated in an experimental flume. Mussels buried significantly deeper in conditions of gradually increasing water velocity compared with rapid increases or where water velocity was constant. 68% of individual mussels washed out when the water velocity was rapidly increased. The findings are novel, provide initial recommendations for targeted management actions for the conservation of M.margaritifera both in Scotland and internationally, and highlight more research is required

    Indigenous Students and Mathematics: Teachers' Perceptions of the role of Teacher Aides

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    This study examined teachers' perceptions of the role of teacher aides in mathematics classrooms in rural and remote Indigenous communities. Twelve teachers from three schools in rural and remote Queensland participated in the study. The results from the first year of the project indicated that there were differences in how these teachers worked with their teacher aides, particularly the specific roles assigned to them in the mathematics classroom, with non-Indigenous teacher aides being given greater responsibilities for student learning and Indigenous teacher aides for behavioural management. As a result of teacher aide in-service on mathematics learning, teachers' perception of the Indigenous teacher aides changed, resulting in each being given greater responsibility for student learning

    Exploring Young Students' Functional Thinking

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    The Early Years Generalising Project (EYGP) involves Australian Years 1-4 (age 5-9) students and investigates how they grasp and express generalisations. This paper focuses on data collected from six Year 1 students in an exploratory study within a clinical interview setting that required students to identify function rules. Preliminary findings suggest that the use of gestures (both by students and interviewers), self-talk (by students), and concrete acting out, assisted students to reach generalisations and to begin to express these generalities. It also appears that as students become aware of the structure, their use of gestures and self- talk tended to decrease
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