376 research outputs found
Machine Learning Tips and Tricks for Power Line Communications
4openopenTonello A.M.; Letizia N.A.; Righini D.; Marcuzzi F.Tonello, A. M.; Letizia, N. A.; Righini, D.; Marcuzzi, F
Aeronautical Engineering, A Continuing Bibliography With Indexes
This bibliography lists 693 reports, articles and other documents introduced into the NASA scientific and technical information system in September 1984
BUILDING SOCIETY MARKETING STRATEGIES: THE ROLE OF SERVICE IMAGE
In recent years building societies have experienced dramatic
change in the markets in which they operate. Deregulation
has provided societies with the powers to enter new and very
different markets. Societies wishing to re-work their
strategies to exploit the new opportunities however did so
with the knowledge that their own traditional markets had
also to be protected from new competitors. Deregulation had
provided access into the savings and mortgage markets to
their natural competitors, the banks and insurance
companies. The selection, by societies, of appropriate
strategies thus became critical to their future success.
Whilst recent studies have investigated the likely
strategies to be pursued by societies in response to market
change, their findings offer little guidance to societies
attempting to re-work their current strategies. Previous
studies failed both to consider the appropriateness of all
strategic options to different building societies and
ignored the likely response of consumers to strategic
change.
The aim of the research was to identify the marketing
strategies most appropriate to different building societies
from a consumer perspective. Image was selected as the
vehicle with which to study the likely response of consumers
to change and thus evaluate the appropriateness of different
strategies. Three generic marketing strategies were
identified: Differentiation; Focus; and Cost Leadership.
The Building Society Image Model was constructed to depict
the composition and structure of image as perceived by the
consumer. Utilising this model the appropriateness of the
three strategies to different building societies was
considered. Whilst support was found for both the
Differentiation and Focus strategies, the appropriateness of
the Cost Leadership strategy was questioned. In particular
the applicability of the diversification strategy currently
adopted by the majority of societies is challenged.West of England Building Societ
Muon (g-2) Technical Design Report
The Muon (g-2) Experiment, E989 at Fermilab, will measure the muon anomalous magnetic moment a factor-of-four more precisely than was done in E821 at the Brookhaven National Laboratory AGS. The E821 result appears to be greater than the Standard-Model prediction by more than three standard deviations. When combined with expected improvement in the Standard-Model hadronic contributions, E989 should be able to determine definitively whether or not the E821 result is evidence for physics beyond the Standard Model. After a review of the physics motivation and the basic technique, which will use the muon storage ring built at BNL and now relocated to Fermilab, the design of the new
experiment is presented. This document was created in partial fulfillment of the requirements necessary to obtain DOE CD-2/3 approval
Electromagnetic fast-transients in LV networks with ubiquitous small-scale embedded generation
Small-scale embedded generation projects rated below 16A per phase are being integrated into low-voltage distribution networks in ever increasing numbers. Seen from the network operator's perspective as little more than negative load, the commissioning of such generators is subject to compliance with the Fit and Forget connection requirements of ENA Engineering Recommendation G83/1. This thesis has sought to quantify the electromagnetic switching transient implications of integrating very large volumes of embedded generation into the UK's low-voltage supply networks. Laboratory testing of a converter-interfaced PV source has been undertaken to characterise typical switching transient waveshapes, and equivalent representative source models have been constructed in EMTP-ATP. A detailed frequency-dependent travelling wave equivalent of the DNO-approved Generic UK LV Distribution network model has been developed and, by means of extensive statistical simulation studies, used to quantify the cumulative impact of geographically localised generators switching in response to common network conditions. It is found that the magnitude of generator-induced voltage and current transients is dependent on the number of concurrently switched generators, and on their relative locations within the network. A theoretical maximum overvoltage of 1.72pu is predicted at customer nodes remote from the LV transformer terminals, for a scenario in which all households have installed embedded generation. Latent diversity in switch pole closing and inrush inception times is found to reduce predicted peak transient voltages to around 25-40% of their theoretical maxima.EThOS - Electronic Theses Online ServiceGBUnited Kingdo
Electromagnetic fast-transients in LV networks with ubiquitous small-scale embedded generation
Small-scale embedded generation projects rated below 16A per phase are being integrated
into low-voltage distribution networks in ever increasing numbers. Seen from the
network operator's perspective as little more than negative load, the commissioning of
such generators is subject to compliance with the Fit and Forget connection requirements
of ENA Engineering Recommendation G83/1. This thesis has sought to quantify the
electromagnetic switching transient implications of integrating very large volumes of
embedded generation into the UK's low-voltage supply networks.
Laboratory testing of a converter-interfaced PV source has been undertaken to
characterise typical switching transient waveshapes, and equivalent representative source
models have been constructed in EMTP-ATP. A detailed frequency-dependent travelling
wave equivalent of the DNO-approved Generic UK LV Distribution network model
has been developed and, by means of extensive statistical simulation studies, used
to quantify the cumulative impact of geographically localised generators switching in
response to common network conditions.
It is found that the magnitude of generator-induced voltage and current transients
is dependent on the number of concurrently switched generators, and on their relative
locations within the network. A theoretical maximum overvoltage of 1.72pu is predicted
at customer nodes remote from the LV transformer terminals, for a scenario in which
all households have installed embedded generation. Latent diversity in switch pole
closing and inrush inception times is found to reduce predicted peak transient voltages
to around 25-40% of their theoretical maxima
Optimization of Operation Sequencing in CAPP Using Hybrid Genetic Algorithm and Simulated Annealing Approach
In any CAPP system, one of the most important process planning functions is selection of the operations and corresponding machines in order to generate the optimal operation sequence. In this paper, the hybrid GA-SA algorithm is used to solve this combinatorial optimization NP (Non-deterministic Polynomial) problem. The network representation is adopted to describe operation and sequencing flexibility in process planning and the mathematical model for process planning is described with the objective of minimizing the production time. Experimental results show effectiveness of the hybrid algorithm that, in comparison with the GA and SA standalone algorithms, gives optimal operation sequence with lesser computational time and lesser number of iterations
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