A study of relationships used in farm record analysis

This study was financed, in part, by a grant from the Federal Extension Service, United States Department of Agriculture, on 'The Use of EDP in Farm Management Decision-Making'--P. [2].Digitized 2007 AES.Includes bibliographical references (page 73)

Wind characteristics over complex terrain: laboratory simulation and field measurements at Rakaia Gorge, New Zealand: final report, part II

CER77-78RNM29.Prepared for the United States Department of Energy, Division of Solar Technology, Federal Wind Energy Program.DOE contract no. EY-76-S06-2438, A001.Includes bibliographical references (pages 93-102).May 1978

Customising Best Practice In Studies Advice For Undergraduate Engineering Students

The attrition rates from undergraduate engineering programmes in the UK remains stubbornly high, despite the best efforts of course teams to engage and support students on their learning journeys. It is generally accepted that there is no single reason for attrition rates from engineering programmes being higher than from other vocational-type university programmes, but many academics believe that an effective Studies Advice system that works for students and staff, could lead to reduced numbers of disengaging and/or failing students. Much has been written on effective approaches to the provision of Studies Advice at University, but it is not clear if the implementation of discipline specific approaches would yield better outcomes. This practice paper describes work that is currently underway at Ulster University to examine engineering students’ perspectives on the Studies Advice approach and to explore how best practice in the university sector might be effectively customised for engineering students. The work describes an initial scoping study, a co-creation exercise with students to establish their baseline understanding of the current system and their ‘wish-list’, and a follow-up focus group session where a number of discipline-specific interventions were explored. Preliminary findings indicate that professional support departments could be more effectively integrated with academic support to provide a wrap-around or ‘single contact point’ for Studies Advice, that formal organised studies advice sessions should be explicit on programme schedules and that an informal ‘buddy or mentor’ student-to-student support system would be beneficial in addressing the UK engineering student attrition issue

Negotiating with the North: How Southern-tier intellectual workers deal with the global economy of knowledge

This article examines a group of intellectual workers who occupy a peripheral but not powerless position in the global economy of knowledge. How do they handle relations with the global metropole, especially in new fields of research where established hierarchies are in question? Three new domains of knowledge - climate change, HIV/AIDS and gender studies - are studied through interviews with 70 active researchers in Southern-tier countries Brazil, South Africa and Australia. A pattern of extraversion, involving active adoption of paradigms from the metropole, is widespread and institutionally supported. Major alternative knowledge formations have not emerged in these domains. However contestations of more specific kinds are frequent. Paradigms are adapted, criticism is offered, activism is engaged, capacities are developed and allegiances sometimes changed. The valorization of local knowledge, which goes beyond the abstractions of universalized paradigms, is particularly significant. Not stark subordination, but a complex collective negotiation characterizes the response of intellectual workers in the Southern tier.Australian Research Council, DP13010348

Using landscape history to predict biodiversity patterns in fragmented landscapes

Landscape ecology plays a vital role in understanding the impacts of land-use change on biodiversity, but it is not a predictive discipline, lacking theoretical models that quantitatively predict biodiversity patterns from first principles. Here, we draw heavily on ideas from phylogenetics to fill this gap, basing our approach on the insight that habitat fragments have a shared history. We develop a landscape ‘terrageny’, which represents the historical spatial separation of habitat fragments in the same way that a phylogeny represents evolutionary divergence among species. Combining a random sampling model with a terrageny generates numerical predictions about the expected proportion of species shared between any two fragments, the locations of locally endemic species, and the number of species that have been driven locally extinct. The model predicts that community similarity declines with terragenetic distance, and that local endemics are more likely to be found in terragenetically distinctive fragments than in large fragments. We derive equations to quantify the variance around predictions, and show that ignoring the spatial structure of fragmented landscapes leads to over-estimates of local extinction rates at the landscape scale. We argue that ignoring the shared history of habitat fragments limits our ability to understand biodiversity changes in human-modified landscape

Roosting Habitat Use by Sandhill Cranes and Waterfowl on the North and South Platte Rivers in Nebraska

Migration ecology and habitat use of spring migrating birds using the Central Platte River is a well-explored topic, yet less is known about use of the North and South Platte rivers (NSPR) in western Nebraska. The efficiency and effectiveness of conservation efforts in the NSPR could be greatly improved with access to information about where and when birds roost and landscape prioritization tools. We used aerial surveys to determine population distribution and migration phenology of sandhill cranes Antigone canadensis, Canada geese Branta canadensis, and ducks using the NSPR for roosting during the mid-February to mid-April spring migration. We used these data and geospatial information to identify important river reaches for these species and habitat covariates that discriminate between those used at lower and higher densities. We found that sandhill cranes and waterfowl generally roosted in different segments of the NSPR and, subsequently, different factors were associated with high densities. Sandhill crane density was positively correlated with distance from obstructions greater than 1 m high and negatively correlated with area of unvegetated sandbar within 1 km. Density of Canada geese and ducks was high in segments positively associated with wetland and sand pit habitats. Human disturbance variables such as roads and bridges in this rural region had little effect on identification of roosting areas used by high densities of all groups. On the basis of our results, habitat conservation efforts that specifically target sandhill cranes will not have similar positive effects on waterfowl use and distribution in the NSPR. Our identification of the most important river segments should allow managers to better target land acquisition or management resources to areas that will have the greatest effect on either waterfowl or sandhill cranes during spring migration

Eco-evolutionary dynamics in fragmented landscapes

Peer reviewedPostprin

Birdshot chorioretinopathy: current knowledge and new concepts in pathophysiology, diagnosis, monitoring and treatment

Birdshot chorioretinopathy (BCR) is a rare form of chronic, bilateral, posterior uveitis with a distinctive clinical phenotype, and a strong association with HLA-A29. It predominantly affects people in middle age. Given its rarity, patients often encounter delays in diagnosis leading to delays in adequate treatment, and thus risking significant visual loss. Recent advances have helped increase our understanding of the underlying autoimmune mechanisms involved in disease pathogenesis, and new diagnostic approaches such as multimodality imaging have improved our ability to both diagnose and monitor disease activity. Whilst traditional immunosuppressants may be effective in BCR, increased understanding of immune pathways is enabling development of newer treatment modalities, offering the potential for targeted modulation of immune mediators. In this review, we will discuss current understanding of BCR and explore recent developments in diagnosis, monitoring and treatment of this disease. Synonyms for BCR: Birdshot chorioretinopathy, Birdshot retinochoroiditis, Birdshot retino-choroidopathy, Vitiliginous choroiditis. Orphanet number: ORPHA179 OMIM: 605808