11,726 research outputs found
On the Estimation of Nonrandom Signal Coefficients from Jittered Samples
This paper examines the problem of estimating the parameters of a bandlimited
signal from samples corrupted by random jitter (timing noise) and additive iid
Gaussian noise, where the signal lies in the span of a finite basis. For the
presented classical estimation problem, the Cramer-Rao lower bound (CRB) is
computed, and an Expectation-Maximization (EM) algorithm approximating the
maximum likelihood (ML) estimator is developed. Simulations are performed to
study the convergence properties of the EM algorithm and compare the
performance both against the CRB and a basic linear estimator. These
simulations demonstrate that by post-processing the jittered samples with the
proposed EM algorithm, greater jitter can be tolerated, potentially reducing
on-chip ADC power consumption substantially.Comment: 11 pages, 8 figure
Best practice report – operation and maintenance requirements
Deliverable 3.6.3 from the MERiFIC Project
A report prepared as part of the MERiFIC Project
"Marine Energy in Far Peripheral and Island Communities"This report is a deliverable of MERiFIC Work Package 3.6: ‘Operation and Maintenance requirements’ and
has been produced as a cross border collaboration between IFREMER and the University of Exeter. The
report provides an overview of guidelines and recommendations for the management of O&M operations
necessary for an optimal exploitation of Marine energy plants, with a focus on the specific areas of South
West Cornwall, UK and Iroise sea, Brittany, France. An overview of the onshore infrastructures and ports
possibly suitable for management of such O&M operations is also provided. Management of scheduled and
unscheduled maintenance operations are discussed in their various aspects including site accessibility. It
should be noted that this topic, including weather window assessment for operations is discussed in more
details in the additional MERIFIC report D3.6.2: Best Practice for installation proceduresMERiFIC was selected under the European Cross-Border Cooperation Programme
INTERREG IV A France (Channel) – England, co-funded by the ERDF
Modelling Organic Dairy Production Systems
In this study, a large number of organic dairy production strategies were compared in terms of physical and financial performance through the integrated use of computer simulation models and organic case study farm data. Production and financial data from three organic case study farms were used as a basis for the modelling process to ensure that the modelled systems were based on real sets of resources that might be available to a farmer. The case study farms were selected to represent a range of farming systems in terms of farm size, concentrate use and location. This paper describes the process used to model the farm systems: the integration of the three models used and the use of indicators to assess the modelled farm systems in terms of physical sustainability and financial performance
Bulk evidence for single-gap s-wave superconductivity in the intercalated graphite superconductor CYb
We report measurements of the in-plane electrical resistivity and the
thermal conductivity of the intercalated graphite superconductor
CYb to temperatures as low as /100. When a field is applied along the
c-axis, the residual electronic linear term evolves in an
exponential manner for . This activated behaviour
establishes the order parameter as unambiguously s-wave, and rules out the
possibility of multi-gap or unconventional superconductivity in this system.Comment: 4 pages, 4 figs, submitted to Phys. Rev. Let
Of One Divided Mind: Fundamental Causes of the Nineteenth-Century Brethren Schism, 1850-1880
Historical research involving the schism within the German Baptist Brethren Church in the 1880s has only been found within broad, general histories of the church. The explanations given by historians relating to the cause of the split have previously centered on individuals and the church publications between 1850 and 1883, and on contemporaries who argued among themselves about whether to adopt practices common among surrounding American religions and society. No known project has focused directly on the content within the publications as it relates to the way these brethren used the Bible and other religious and spiritual rhetoric to substantiate their arguments on either side.
My research focussed on the Brethren periodicals during the decades between roughly 1850 and 1880. I selected four of the most prominent papers of the period: the Gospel Visitor, the Christian Family Companion, the Vindicator, and the Progressive Christian. Each of these periodicals contained arguments for or against adopting practices not previously accepted within the church. Within their pages I found that every argument, for or against a particular practice, was based on scriptural interpretation, or other religious commentary used to persuade readers
Imaging Diagnosis – The Computed Tomographic Appearance of a Giant Cell Tumor affecting the mandible in a pygmy goat
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