676 research outputs found
The life and works of James Miller, 1704-1744, with particular reference to the satiric content of his poetry and plays.
No full textPhDJames Miller was born the son of a Dorset rector in 1704. He
was himself ordained, but acquired no benefice until just before his
early death, probably because of a scathing portrayal of the Bishop
of London in one of his verse satires. At Oxford he wrote a vivacious
comedy of humours, set in the University. Its production in 1730
began his dramatic career, at a time when the number of London
theatres had just doubled, and new dramatic forms were being invented.
In 1731 his poem Harlequin-Horace, a witty inversion of
the Ars Poetica, attacked pantomime and opera, but also painted a
lively portrait of the entire theatrical world, in the tradition of
the Dunciad.
After collaborating in a translation of Moliere's works Miller
wrote two plays based on this author. Of all his dramatic works
these were the most successful with his contemporaries, and were
followed by a modernisation of Much Ado, and a ballad-opera adapted
from an afterpiece by Jean-Baptiste Rousseau, and rendered highly
topical. Miller made similar use of a recent French comedy showing
a Red Indian's reactions to civilisation, a satiric "fable" by Walsh
and Voltaire's Mahomet. A large quantity of original material was
incorporated into most of these, and this is generally satirical in
nature. The Indian is made to voice almost egalitarian sentiments.
An afterpiece, "The Camp Visitants", satirised military inaction
in the war, and was apparently banned. The manuscripts of the six
plays produced after the Licensing Act bear the examiner's deletions,
and illustrate the nature of the censorship at this time.
Miller's greatest strength is probably his flexible, vigorously
colloquial dialogue. His political satire is mostly contained in
the poetry, which attacks Walpole's administration with increasing
vehemence through the seventeen-thirties, until its fall. In 1740
two poems that used Pope in symbolic contrast to Walpole caused a
sensation. In both poetry and plays Miller is also a social satirist,
who lays unusually strong emphasis on false taste and the deterioration
of culture
Tele-operated climbing and mobile service robots for remote inspection and maintenance in nuclear industry
No full textOptimizing green space locations to reduce daytime and nighttime urban heat island effects in Phoenix, Arizona
No full textabstract: The urban heat island effect is especially significant in semi-arid climates, generating a myriad of problems for large urban areas. Green space can mitigate warming, providing cooling benefits important to reducing energy consumption and improving human health. The arrangement of green space to reap the full potential of cooling benefits is a challenge, especially considering the diurnal variations of urban heat island effects. Surprisingly, methods that support the strategic placement of green space in the context of urban heat island are lacking. Integrating geographic information systems, remote sensing, spatial statistics and spatial optimization, we developed a framework to identify the best locations and configuration of new green space with respect to cooling benefits. The developed multi-objective model is applied to evaluate the diurnal cooling trade-offs in Phoenix, Arizona. As a result of optimal green space placement, significant cooling potentials can be achieved. A reduction of land surface temperature of approximately 1–2 °C locally and 0.5 °C regionally can be achieved by the addition of new green space. 96% of potential day and night cooling benefits can be achieved through simultaneous consideration. The results also demonstrate that clustered green space enhances local cooling because of the agglomeration effect; whereas, dispersed patterns lead to greater overall regional cooling. The optimization based framework can effectively inform planning decisions with regard to green space allocation to best ameliorate excessive heat.Corresponding Author:
Yujia Zhang
Arizona State University
[email protected]
Sicily and the Sicilians
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Previous issue date: 1889Thesis (B.L.)--University of Illinois, 1889.Ms.Lacking title page; title and author information from table of contents at beginning of volume. IU-RBound with 11 other B.L. theses from UIUC, 1889. IU-
Toward seamless networking in indoor environments in millimeter wave bands
No full textThis thesis investigates the possibility of applying the 60GHz band to the indoor networking environment at the systemand link control levels. The work presented in this thesis aims at developing novel systemconcepts for seamless and cost-effective broadband local area networks operating in the 60GHz band in particular andmillimeter-wave bands in general. Different from many efforts today targeting point-to-point cable replacement solutions, this thesis attempts to apply the 60 GHz band to a broader context, i.e., the local area network environment in which multiple users and multiple applications share the network resource simultaneously. The utilization of this millimeter wave band, however, leads to smaller radio cell coverage due to propagation losses and line-of-sight requirements. Indoor networks operating at this band will comprise a large number of pico-cells corresponding to that many of antenna stations. As a result, the cost of many antenna stations has become a major contributor for the total cost of the networks infrastructure. To reduce the systems cost, it is therefore crucial that the complexity of an antenna station is simplified.Radio over fiber (RoF) techniques can be employed to achieve this goal. Particularly, this thesis is based on a RoF technique called Optical Frequency Multiplication (OFM) that is able to generate pure millimeter wave carriers remotely. Instead of placing all the signal processing functions in antenna stations, it is now possible to concentrate those complex functions in a single processing block, i.e., the central station (CS). since the propagation of 60 GHz signals is highly obstructed by objects, it is generally difficult to obtain good signal coverage in the indoor environment. In this thesis, we propose the novel Extended Cell concept that is able to overcome the problem of insufficient signal coverage. In this solution, a number of adjacent radio cells are grouped into an extended cell. Furthermore, all the antenna stations in an extended cell are set to operate in the same radio channel. By controlling the cells to be included into an extended cell, overlap areas between extended cells can be created in transitional areas in the floor to ensure seamless handovers of ongoing connections. To optimize the performance of the system with regards to variable realtime traffic patterns, we propose an algorithm to dynamically form extended cells based on the actual traffic under each cell. The performance of twoMediumAccess Control protocols, i.e., IEEE 802.11 representing the distributed protocol family and IEEE 802.16 representing the centralized protocol one, when applied to the proposed RoF and extended cell based architecture is also discussed in this thesis. A major effect when an optical distribution system is inserted in a traditional wireless network is the additional propagation delay introduced by the fiber links. This additional propagation delay can exceed the timing boundary of the MAC protocols and eventually stop them from working. Another problem also arises when the utilization of the 60 GHz band is combined with the extended cell concept. Specifically, mobile stations in a room will be completely hidden to other stations in other rooms.We show that the throughput of both protocols degrades when the length of optical distribution network increases, but this degradation is not significant.With regards to the hidden terminal problem, the performance of distributed and carried sense based protocols is severely affected. Finally, this thesis concerns the issues of maintaining quality of services (QoS) when the MAC protocols are applied to the proposed network architecture. We have shown that the proposed architecture does not affect the service differentiation mechanisms of the MAC protocols. Moreover, in this architecture, since the central station has the full control of the network, QoS and mobility control algorithms can also be greatly simplified to improve the performance of the network.Electrical Engineering, Mathematics and Computer Scienc
Onderzoek naar de bruikbaarheid van het hoogtevliegtuig voor verkeersdoeleinden
No full textMechanical, Maritime and Materials Engineerin
The Dynamic Monte Carlo Method for Transient Analysis of Nuclear Reactors
No full textIn this thesis a new method for the analysis of power transients in a nuclear reactor is developed, which is more accurate than the present state-of-the-art methods. Transient analysis is important tool when designing nuclear reactors, since they predict the behaviour of a reactor during changing conditions, such as a control-rod movement, induced by an operator, or an accident scenario. The current methods for transient analysis apply deterministic solvers to calculate the neutronic response, but not only do these deterministic solvers always need to discretise the problem, they also often apply more fundamental approximations such as homogenization or diffusion. Therefore a stochastic method is needed, which only has a statistical uncertainty. A challenge for applying the Monte Carlo method on transient analysis, is the different types of particles which must be simulated in a single simulation. It is common for a neutronics calculation to simulate the prompt neutrons, however the simulation of precursors is new. The main challenge when simulating precursors lies in their long lifetime, which is seconds, whereas the prompt neutrons have a lifetime of microseconds. This has been solved by dividing the transient problem into time intervals and forcing the precursors to produce a delayed neutron is all time intervals. This will ensure prompt-neutron chains in all intervals. The prompt neutrons will form prompt-neutron chains, which poses another challenge for the Monte Carlo method. The chain length of these prompt neutrons varies a lot and the can also split into many branches, which averages out in a real power reactor, but is difficult to simulate on a computer. To improve the chain-length statistics, a new variance reduction technique is developed, which dictates that a single neutron will emerge from each interaction. This emerging neutron can be the result of a scattering event or a fission event. Finally, a dynamic simulation scheme, which can run in parallel, has been devised, simulating all time intervals consecutively. Also, a method for sampling the initial conditions is created and this scheme is implemented in a purpose-built Monte Carlo code and in a general-purpose Monte Carlo code. The two codes have been tested in several cases and they behave as expected, agreeing with deterministic method where expected, but deviating when the deterministic methods are no longer valid. In order to simulate realistic transients in a power reactor, feedback has to be taken into account. To achieve this, the dynamic Monte Carlo method has been coupled to a thermal-hydraulics code, using an explicit scheme. The results of this coupled simulation are compared to a state-of-the-art coupled diffusion calculation in a NURISP-benchmark calculation and the results agree well, except for a small deviation towards the end. The exact source of this deviation should be further investigated, but the difference is small, when realising that there is already a deviation in the steady-state results. The results demonstrate the feasibility of performing a fully dynamic transient analysis, using only Monte Carlo for the neutronics part of the calculation. Transients can now be calculated, with detailed modelling of any complex geometry and with continuous energy, which is especially useful for newly developed reactor types and one-of-a-kind research reactors.Radiation, Radionuclides & ReactorsApplied Science
Impact of Exposure Duration to High-Altitude Hypoxia on Oxidative Homeostasis in Rat Brain Regions
No full textAuthor Contributions:
Conceptualization, B.L.-M., J.-L.R. and M.R.-G.; Data curation, B.L.-M. and J.- L.R.; Formal analysis, B.L.-M., A.R. and R.D.; Funding acquisition, R.C.-R. and B.L.-M.; Investigation, B.L.-M., R.C.-R., C.M., J.O.-F. and R.D.; Methodology, B.L.-M., J.-L.R., A.R. and M.R.-G.; Project administration, B.L.-M. and M.R.-G.; Resources, B.L.-M. and R.C.-R.; Software, A.R. and J.-L.R.; Validation, R.C.-R., J.O.-F., C.M. and M.R.-G.; Visualization, B.L.-M., J.-L.R. and A.R.; Writing— original draft, A.R., B.L.-M. and J.-L.R.; Writing—review and editing, A.R., B.L.-M. and J.-L.R. All authors have read and agreed to the published version of the manuscriptHypoxia at altitudes above 3000 m poses a significant threat to organ health and physiological homeostasis, particularly in metabolically active tissues such as the brain. Many of the cellular alterations induced by hypoxia are associated with the excessive generation of reactive oxygen species (ROS) and the resulting oxidative stress. In this study, we investigated the effects of exposure duration and altitude levels on oxidative homeostasis in the rat hypothalamus, cortex, hippocampus, and striatum. We assessed ROS production, malondialdehyde (MDA) levels, the antioxidant activities of superoxide dismutase (SOD), and catalase, as well as molecular biomarkers of oxidative stress, cell death, and inflammation. Our findings demonstrated that ROS, MDA and SOD levels increased across all brain regions, particularly in response to higher altitude exposure. Conversely, catalase activity decreased under the same conditions. At the molecular level, we observed overexpression of key biomarkers related to oxidative stress, cell death, and inflammation, especially at extreme altitudes. Furthermore, these effects were most pronounced in the hippocampus, cortex, and striatum. In conclusion, our data indicate that hypoxic exposure at higher altitudes significantly contributes to the oxidative disruption of brain homeostasis in ratsUniversidad Nacional Mayor de San Marcos ( Perú )PROCIENCIA-CONCYTEC ( Perú )Depto. de Farmacología y ToxicologíaFac. de VeterinariaTRUEpu
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