18,720 research outputs found
Letter from Roy Wilkins, Executive Secretary, to Mr. Jesse H. Turner, President Memphis Branch NAACP
No full textA letter from Roy Wilkins to Jesse H. Turner, February 27, 1961. Wilkins, Executive Secretary of the NAACP, congratulating Turner for the Commercial Appeal ad as an excellent piece of public relations
Artists and travellers: the Venetian stays of Joseph Mallord William Turner explored through the sketchbooks and works.
No full textreservedIl lavoro verte ad analizzare il pittore inglese romantico Joseph Mallord William Turner ponendo maggiore attenzione ai viaggi realizzati nella sua vita e alle opere che essi hanno prodotto, in particolare taccuini e acquerelli. Inoltre, il lavoro si concentra sulla presenza del pittore nella città di Venezia e sulle opere e i vari viaggi realizzati nella città veneta.The work focuses on analyzing the english romantic painter Joseph Mallord William Turner, with particular attention to the travels he undertook in his life and the works they produced, especially his sketchbooks and watercolors. Additionally, the work delves into the painter's presence in the city of Venice and the works and various journeys he undertook in the Venetian city
Link stability estimation based on link connectivity changes in mobile ad-hoc networks
No full textDear Wang,
Re: Link Stability Estimation Based on Link Connectivity Changes in Mobile Ad-hoc Networks
I have not been able to assess if this is an author version peer-reviewed or is it an author version non peer reviewed. Could you please clarify this so I can proceed to add your paper to Spiral. Spiral digital repository only accept peer-reviewed papers.
30/11/12 author has confirmed peer reviewe
Exploring the Work of Victor Turner: Liminality and its later implications
No full textVictor Turner broke anthropology free from cultural determinism when it was anchored in the reductionist theories of Durkheim. Like Tolstoy in his recognition of the origin of violence in government, Turner recognized the origin of the denaturing of cultures in culture’s own penchant for the building of social structures in order to perpetuate itself. He saw in the cracks between structures, and in the liminal gaps necessary for changes in structure, the revival of the lost immediacy of social relationships and the communitas that is its mark. Nowadays one may include signs of spirituality in those gaps, although that spirituality has been a topic previously tabooed in anthropological circles or hidden under structural analysis. Turner saw the inconvenient truth that if structuralism as a value and philosophy (plus what we now see as the violence inseparable from the political state, along with neoconservatism and neoliberalism—business doctrines multiplied by themselves ad infinitem) were to continue as the world’s philosophy, we would continue with wars and the smothering of the natural flexibility of social intercourse (see Robert Putnam 2000, who shows in stark figures how sociality in general is losing ground in our era).
Keywords: Victor Turner, social process, rites of passage, liminality, communitas, anthropologyof experience, brain studie
Fenotipo Turner associato ad una delezione interstiziale sul braccio lungo del cromosoma 2
No full textFenotipo Turner associato ad una delezione interstiziale sul braccio lungo del cromosoma
Universal design of an automatic page-turner
No full textThis thesis deals with the effectiveness of automatic page-turners as one form of assistive technology. It examines several of the existing commercially available products with a view to developing a universal system that would have the potential to satisfy both the special needs and musician sectors. It explores the current trends regarding the collection of statistical data on people with a physical disability, which is intended to identify the= present and future needs for such assistive technology devices. The project utilizes a usercentric approach to document the requirements of the end users of such a device, before conceptualising a model which would have the potential to satisfy the expanded target market. It explains in detail the development process of the working model, which employs two anthropomorphic finger-like mechanisms, both of which incorporate force feedback. These finger-mimetic components are used to separate and turn the pages of the reading material. A functional prototype was built and a report of the preliminary testing carried out, together with a fully documented illustration of the final working engineering model is included. The test results reveal that the system has shown great potential for the successful development of a more universal Automatic page turner that could satisfy both identified markets
Cerebral atrophy in mild cognitive impairment and Alzheimer disease: rates and acceleration.
No full textOBJECTIVE: To quantify the regional and global cerebral atrophy rates and assess acceleration rates in healthy controls, subjects with mild cognitive impairment (MCI), and subjects with mild Alzheimer disease (AD). METHODS: Using 0-, 6-, 12-, 18-, 24-, and 36-month MRI scans of controls and subjects with MCI and AD from the Alzheimer's Disease Neuroimaging Initiative (ADNI) database, we calculated volume change of whole brain, hippocampus, and ventricles between all pairs of scans using the boundary shift integral. RESULTS: We found no evidence of acceleration in whole-brain atrophy rates in any group. There was evidence that hippocampal atrophy rates in MCI subjects accelerate by 0.22%/year2 on average (p = 0.037). There was evidence of acceleration in rates of ventricular enlargement in subjects with MCI (p = 0.001) and AD (p < 0.001), with rates estimated to increase by 0.27 mL/year2 (95% confidence interval 0.12, 0.43) and 0.88 mL/year2 (95% confidence interval 0.47, 1.29), respectively. A post hoc analysis suggested that the acceleration of hippocampal loss in MCI subjects was mainly driven by the MCI subjects that were observed to progress to clinical AD within 3 years of baseline, with this group showing hippocampal atrophy rate acceleration of 0.50%/year2 (p = 0.003). CONCLUSIONS: The small acceleration rates suggest a long period of transition to the pathologic losses seen in clinical AD. The acceleration in hippocampal atrophy rates in MCI subjects in the ADNI seems to be driven by those MCI subjects who concurrently progressed to a clinical diagnosis of AD
A Fair and Secure Cluster Formation Process for Ad Hoc Networks
No full textAn efficient approach for organizing large ad hoc networks is to divide the nodes
into multiple clusters and designate, for each cluster, a clusterhead which is responsible for
holding intercluster control information. The role of a clusterhead entails rights and duties.
On the one hand, it has a dominant position in front of the others because it manages the
connectivity and has access to other node¿s sensitive information. But on the other hand, the
clusterhead role also has some associated costs. Hence, in order to prevent malicious nodes
from taking control of the group in a fraudulent way and avoid selfish attacks from suitable
nodes, the clusterhead needs to be elected in a secure way. In this paper we present a novel
solution that guarantees the clusterhead is elected in a cheat-proof manner
Thesaurus mathematicus sive canon sinuum ad radium 1.00000.00000.00000 ...
No full textSinus primi et postremi gradus ad singula scrupula secunda... - Principia sinuum ad radium...at nunc primum in lucem editus... a Bartholomaeo PitiscoGeschenkexlibris-Etikette: "Turner Collection", The Library University of Keele. Presented by C.W. Turner 1968" 004441678_0001 Exemplar der ETH-BI
Energy efficiency in ad-hoc wireless networks
No full textIn ad-hoc wireless networks, nodes are typically battery-powered, therefore energy limitations are among the critical constraints in ad-hoc wireless networks' development. The approaches investigated in this thesis to achieve energy efficient performance in wireless networks
can be grouped into three main categories.
1. Each wireless network node has four energy consumption states: transmitting, receiving, listening and sleeping states. The power consumed in the listening state is less than the power consumed in the transmitting and receiving states, but significantly greater than that in the sleeping state. Energy efficiency is achieved if as many nodes as possible are put into the sleeping states.
2) Since energy is consumed for transmission nonlinearly in terms of the transmission range, transmission range adjustment is another energy saving approach. In this work, the optimal transmission range is derived and applied to achieve energy efficient performance in a number of scenerios.
3) Since energy can be saved properly arranging the communication algorithms, network topology management or network routing is the third approach which can be utilised in combination with the above two approaches. In this work, Geographical Adaptive Fidelity (GAF) algorithms, clustering algorithms and Geographic Routing (GR) algorithms are all utilised to reduce the energy consumption of wireless networks, such as Sensor Networks and Vehicular Networks.
These three approaches are used in this work to reduce the energy consumption of wireless networks. With the GAF algorithm. We derived the optimal transmission range and optimal grid size in both linear and rectangular networks and as a result we show how the network energy consumptions can be reduced and how the network lifetime can be prolonged. With Geographic Routing algorithms the author
proposed the Optimal Range Forward (ORF) algorithm and Optimal Forward with Energy Balance (OFEB) algorithm to reduce the energy consumption and to prolong the network lifetime. The results show that compared to the traditional GR algorithms (Most Forward within Radius, Nearest Forward Progress), the network lifetime is prolonged. Other approaches have also been considered to improve the networks's energy efficient operation utilising Genetic Algorithms to find the optimal size of the grid or cluster. Furthermore realistic physical layer models, Rayleigh fading and LogNormal fading, are considered in evaluating energy efficiency in a realistic network environment
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