1,574 research outputs found
Alien Registration- Given, Fern I. (Crystal, Aroostook County)
https://digitalmaine.com/alien_docs/26549/thumbnail.jp
Merlin: A Language for Provisioning Network Resources
This paper presents Merlin, a new framework for managing resources in
software-defined networks. With Merlin, administrators express high-level
policies using programs in a declarative language. The language includes
logical predicates to identify sets of packets, regular expressions to encode
forwarding paths, and arithmetic formulas to specify bandwidth constraints. The
Merlin compiler uses a combination of advanced techniques to translate these
policies into code that can be executed on network elements including a
constraint solver that allocates bandwidth using parameterizable heuristics. To
facilitate dynamic adaptation, Merlin provides mechanisms for delegating
control of sub-policies and for verifying that modifications made to
sub-policies do not violate global constraints. Experiments demonstrate the
expressiveness and scalability of Merlin on real-world topologies and
applications. Overall, Merlin simplifies network administration by providing
high-level abstractions for specifying network policies and scalable
infrastructure for enforcing them
Nonlinear Dynamics in Distributed Systems
We build on a previous statistical model for distributed systems and
formulate it in a way that the deterministic and stochastic processes within
the system are clearly separable. We show how internal fluctuations can be
analysed in a systematic way using Van Kanpen's expansion method for Markov
processes. We present some results for both stationary and time-dependent
states. Our approach allows the effect of fluctuations to be explored,
particularly in finite systems where such processes assume increasing
importance.Comment: Two parts: 8 pages LaTeX file and 5 (uuencoded) figures in Postscript
forma
Quaternions : a mathematica package for quaternionic analysis
This paper describes new issues of the Mathematica standard package Quaternions for implementing Hamilton's Quaternion Algebra.
This work attempts to endow the original package with the ability to perform operations on symbolic expressions involving quaternion-valued functions.
A collection of new functions is introduced in order to provide basic mathematical tools necessary for dealing with regular functions in , for . The performance of the package is illustrated by presenting several examples and applications.Centro de Matemática da Universidade do MinhoFundação para a Ciência e a Tecnologia (FCT)Centro de Investigação e Desenvolvimento em Matemática e Aplicações da Universidade de Aveir
Nurses\u27 Alumnae Association Bulletin - Volume 2 Number 3
The Jefferson Nurse
Letter from the President
Delegates to Biennial Convention
Attention
Blood Transfusion - Plasma Unit
Life in the Army Nurse Corps
Secretary\u27s Report
Elected to New Office
1892-1942
Progress or Alumnae Association 1892-1942
Report of the School of Nursing
Staff News
Please Change My Address
Air Cooled
Red Cross Report
Fingerprinting
Graduates in the U.S. Army and Navy
Degrees Received
Promotions
Jubilee Report
Engagements
Marriages
Births
New Positions - 1941-1942
New Positions on the Nursing Staff of the Hospita
Optimization of second-harmonic generation from touching plasmonic wires
We employ transformation optics to optimize the generic nonlinear wave
interaction of second-harmonic generation from a pair of touching metallic
wires. We demonstrate a 10 orders of magnitude increase in the second-harmonic
scattering cross-section by increasing the background permittivity and a 5
orders of magnitude increase in efficiency with respect to a single wire. These
results have clear implications for the design of nanostructured metallic
frequency-conversion devices. Finally, we exploit our analytic solution of a
non-trivial nanophotonic geometry as a platform for performing a critical
comparison of the strengths, weaknesses and validity of other prevailing
theoretical approaches previously employed for nonlinear wave interactions at
the nanoscale
Controlling crystallization and its absence: Proteins, colloids and patchy models
The ability to control the crystallization behaviour (including its absence)
of particles, be they biomolecules such as globular proteins, inorganic
colloids, nanoparticles, or metal atoms in an alloy, is of both fundamental and
technological importance. Much can be learnt from the exquisite control that
biological systems exert over the behaviour of proteins, where protein
crystallization and aggregation are generally suppressed, but where in
particular instances complex crystalline assemblies can be formed that have a
functional purpose. We also explore the insights that can be obtained from
computational modelling, focussing on the subtle interplay between the
interparticle interactions, the preferred local order and the resulting
crystallization kinetics. In particular, we highlight the role played by
``frustration'', where there is an incompatibility between the preferred local
order and the global crystalline order, using examples from atomic glass
formers and model anisotropic particles.Comment: 11 pages, 7 figure
Hydrothermal multivariable approach. Full-scale feasibility study
A process configuration combining thermal hydrolysis (TH) and anaerobic
digestion (AD) of sludge has been studied with the objective of
analysing the feasibility of the technology for full scale
installations. The study has been performed through pilot scale
experiments and energy integration considerations, and a scheme of the
most profitable option is presented: thermal hydrolysis unit fed with
7% total solids (TS) secondary sludge, anaerobic digestion of the
hydrolysed sludge together with fresh primary sludge, and a
cogeneration unit to produce green electricity and provide hot steam
for the thermal hydrolysis process. From a technical and practical
point of view, the process scheme proposed is considered to be
feasible. Based on the results of the pilot plant performance and the
laboratory studies, the process has proven to operate successfully at a
concentration of 7-8% TS. After the thermal hydrolysis, sludge
viscosity becomes radically smaller, and this favours the digesters
mixing and performance (40% more biogas can be obtained in nearly half
the residence time compared to the conventional digestion). From an
economic point of view, the key factors in the energy balance are: the
recovery of heat from hot streams, and the concentration of sludge. The
article presents the main energy integration schemes and defines the
most profitable one: an energetically self-sufficient process, with a
cogeneration unit. The scheme proposed has proven to need no additional
energy input for the sludge hydrolysis, generates more that 1 MW green
electricity (246 kW surplus with respect to the conventional process),
and produces 58% less volume of Class A biowaste. The study and
balances here presented set the basis for the scale-up to a
demonstration plant (hydrolysis + anaerobic digestion + cogeneration
unit)
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