642 research outputs found
Circular 82
The development of improved plant cultivars is accomplished through comprehensive
plant breeding programs. Such programs:
1) evaluate genetically-diverse germplasm in order to identify superior-performing
genotypes;
2) create new genetic recombinations from crosses or other means using selected
parental genotypes;
3) evaluate segregating progeny from these families while exerting selection
pressure for desirable characteristics; and
4) identify superior-performing genotypes in yield trials conducted in multiple
environments.
This circular documents the current status of research in cultivar development
associated with the Alaska barley breeding program
Circular 85
The development of improved plant cultivars is accomplished through comprehensive
plant breeding programs. Such programs:
1) evaluate promising germplasm to identify superior-performing genotypes for
use as parents;
2) create new genetic recombinations from these selected parental genotypes using
crossing or other means;
3) evaluate segregating progeny from the resulting families while exerting selection
pressure for desirable characteristics; and
4) identify superior-performing cultivars in yield trials conducted across multiple
environments.
This circular documents the current status of research in cultivar development
associated with the Alaska barley breeding program
Circular 92
The development of improved plant cultivars is accomplished through comprehensive plant breeding
programs. Such programs:
1) evaluate promising germplasm to identify superior-performing genotypes for use as parents;
2) create new genetic recombinations from these selected parental genotypes using crossing or other
means;
3) evaluate segregating progeny from the resulting families while exerting selection pressure for
desirable characteristics; and
4) identify superior-performing cultivars in yield trials conducted across multiple environments.
This circular documents the current status of research in cultivar development associated with the
Alaska barley breeding program
Synapse-Centric mapping of cortical models to the spiNNaker neuromorphic architecture
While the adult human brain has approximately 8.8 × 1010 neurons, this number is dwarfed by its 1 × 1015 synapses. From the point of view of neuromorphic engineering and neural simulation in general this makes the simulation of these synapses a particularly complex problem. SpiNNaker is a digital, neuromorphic architecture designed for simulating large-scale spiking neural networks at speeds close to biological real-time. Current solutions for simulating spiking neural networks on SpiNNaker are heavily inspired by work on distributed high-performance computing. However, while SpiNNaker shares many characteristics with such distributed systems, its component nodes have much more limited resources and, as the system lacks global synchronization, the computation performed on each node must complete within a fixed time step. We first analyze the performance of the current SpiNNaker neural simulation software and identify several problems that occur when it is used to simulate networks of the type often used to model the cortex which contain large numbers of sparsely connected synapses. We then present a new, more flexible approach for mapping the simulation of such networks to SpiNNaker which solves many of these problems. Finally we analyze the performance of our new approach using both benchmarks, designed to represent cortical connectivity, and larger, functional cortical models. In a benchmark network where neurons receive input from 8000 STDP synapses, our new approach allows 4× more neurons to be simulated on each SpiNNaker core than has been previously possible. We also demonstrate that the largest plastic neural network previously simulated on neuromorphic hardware can be run in real time using our new approach: double the speed that was previously achieved. Additionally this network contains two types of plastic synapse which previously had to be trained separately but, using our new approach, can be trained simultaneously
A Short Story about XML Schemas, Digital Preservation and Format Libraries
One morning we came in to work to find that one of our servers had made 1.5 million attempts to contact an external server in the preceding hour. It turned out that the calls were being generated by the Library’s digital preservation system (Rosetta) while attempting to validate XML Schema Definition (XSD) declarations included in the XML files of the Library’s online newspaper application Papers Past, which we were in the process of loading into Rosetta. This paper describes our response to this situation and outlines some of the issues that needed to be canvassed before we were able to arrive at a suitable solution, including the digital preservation status of these XSDs; their impact on validation tools, such as JHOVE; and where these objects should reside if they are considered material to the digital preservation process
Scholarly Communication Outreach: OERs, ETDs, and Liaisons
At Eastern Illinois University (EIU) several library faculty have been involved with a coordinated outreach effort to provide scholarly communication support services to EIU\u27s faculty. This presentation will highlight many of those efforts, including producing the results of the recent Bepress survey trial of faculty digital research needs, using the IR as a platform for hosting Open Educational Resources, marketing the IR and library services to faculty via Success + Service reports, training library subject liaisons to be scholarly communication coaches, and outreach efforts to specific campus entities such as EIU\u27s Research and Sponsored Programs Office, the Center for Humanities, and the Graduate School
A novel method to find the neutral position of the breast
Breast pain affects up to 70% of the female population. It is believed that stretching of the breast tissue causes discomfort and that by placing the breast into a position in which the tissue is neither in compression or tension (termed neutral position) will eliminate breast pain. The purpose of the study was to find a simple method that could be used to determine the location of the neutral position. One participant with a breast size of 34C performed three activities. The breast and torso movement were tracked using four retroreflective markers. The results suggest that the counter-movement jump was the most appropriate
method as it forced the breast to oscillate from tension in the upper-side of the breast to tension in the under-side of the breast. The neutral position was found to be -129 ± 6 mm below the suprasternal notch, which was located 14 mm above the resting height of the breast. It was concluded that the first role of a bra is to lift the breast above the static position to cause more symmetrical oscillations about the neutral position
Filling Knowledge Gaps in a Broad-Coverage Machine Translation System
Knowledge-based machine translation (KBMT) techniques yield high quality in
domains with detailed semantic models, limited vocabulary, and controlled input
grammar. Scaling up along these dimensions means acquiring large knowledge
resources. It also means behaving reasonably when definitive knowledge is not
yet available. This paper describes how we can fill various KBMT knowledge
gaps, often using robust statistical techniques. We describe quantitative and
qualitative results from JAPANGLOSS, a broad-coverage Japanese-English MT
system.Comment: 7 pages, Compressed and uuencoded postscript. To appear: IJCAI-9
New approaches to mapping and managing palaeochannel resources in the light of future environmental change : a case study from the Trent Valley, UK
Abandoned river channels may provide rich primary sources of palaeoenvironmental and cultural information elucidating landscape evolution, climate change, vegetation history and human impact, especially since the beginning of the Holocene epoch. However, although potentially an important resource, palaeochannels are not often recorded systematically and only rarely enjoy robust statutory protection (in the UK as Sites of Special Scientific Interest). In consequence, it is challenging to mitigate and manage this important geoarchaeological resource effectively within the UK planning framework. Whilst palaeochannels have long been recognised on aerial photographs and historic maps, the advent of airborne laser scanning (Lidar) and other remote-sensing technologies has provided a hitherto unforeseen opportunity to record such landforms and related features at a catchment scale. This paper provides a case study from the Nottinghamshire reach of the Trent Valley, where a desk-based methodology that is now being extended across the entire catchment has been developed for recording, geospatially locating and defining the attributes of observed palaeochannels. After outlining the methodology, we consider how this approach to resource management can aid archaeological research and future heritage management, especially in the light of predicted climate and environmental change
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