Ay190 – Computational Astrophysics

Description

• mémoire
• cours magistral - matière potentielle : notes
• revision
• cours - matière potentielle : astrophysics

CALIFORNIA INSTITUTE OF TECHNOLOGY Division of Physics, Mathematics, and Astronomy Ay190 – Computational Astrophysics Christian D. Ott and Andrew Benson , January 5, 2012 Document under development. 2012-01-05 08:12:09 -0800 (Thu, 05 Jan 2012) Revision 153 Last changed by cott 1

• absolute fp
• basics of numerical computation
• problem with a true solution
• step size
• step-size
• finite differences
• order
• numbers
• error
• problem

Sujets

• Mémoire
• Révision
• Astrophysics
• Benson
• Ró?yczka, Greater Poland Voivodeship
• Computer
• University of Southampton
• Derivative
• Thomson
• Cambridge University
• Number

Informations

• Publié par: iwlo0
• Nombre de lectures: 20
• Langue: English
• Poids de l'ouvrage: 1 Mo

Extrait

Wireless networks that make sense
Complete semiconductor solutions for wireless sensor networks
2011
www.dialog-semiconductor.comTechnology benefits
• Easy to install and use, perfect for self-installed consumer applications
· Whole house coverage means no need for complex mesh networks
· System confgur es itself
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• Reliable operation for maximum user satisfaction
· Operates in interfer ence-fr ee DECT band
· Data is transferr ed using an extensively pr oven pr otocol
· System chooses the right fr equency channel in every situation
• Nodes can operate for years on standar d batteries
The Dialog difference
• Co-cr eator of the DECT ULE standar d
• Pr oven expertise in wir eless networks and IP solutions
• Low-cost inter net access solutionsThe right choice for wireless networks • T ype-appr oved SmartPulse™ modules include antenna
· No RF knowledge r equir ed
· Can be used worldwide
• Easy-to-use, open-sour ce development envir onment
W ir eless networking makes life easier , safer , mor e comfortable and mor e secur e. This emerging, fast-gr owing
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Y ou can fnd all these characteristics – and mor e – in DECT ULE. DECT ULE is an ultra-low-energy extension of
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integrate all the har dwar e and softwar e you need – including the antenna. So you can just dr op them into
your application; no RF expertise or r esour ces ar e r equir ed for design or pr oduction ramp up.
2 www.dialog-semiconductor.com 3Software
DECT ULE protocol software
All our SmartPulse™ modules ar e supplied with complete DECT ULE pr otocol softwar e. This softwar e pr ovides
all the high-level networking functionality , so you can focus on your application. The module har dwar e
and softwar e can be easily confgur ed either via an A T command set or dir ectly thr ough the Application
Pr ogramming Interface (API).
DECT ULE products solution concepts
World Wide Web System host processor
DECT IP Base SC14WSMDECT Basestation
Hardware platform
DECT ULE’ s long range means it can handle most wir eless sensor networking applications using a simple star
confguration. That avoids the complexity of cr eating a mesh or car efully placed r epeaters.
SmartPulse™ wir eless sensor modules ar e the ideal networking choice for sensor nodes. These certifed, dr op-
in modules combine a transceiver , baseband, power amplifer and antenna – as well as complete pr otocol and
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wir eless sensor module depending on your application needs: data-only and voice-and-data. sensors
Of fering the same level of integration as a wir eless sensor module, the SmartPulse™ cor dless voice module
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voice
for contr ollers in standalone networks or to bridge to the outside world.
actuators
In addition, our fexible V oIP pr ocessors pr ovide a simple r oute for cr eating IP basestations that connect to the
inter net, helping you combine the unique benefts of a DECT ULE network with the limitless possibilities of the
W orld W ide W eb.
data & voice
For connected smart home applications, we of fer a number of solutions for Integrated Access Devices that
sensor & actuatorcombine sensor networking with cor dless telephony , digital TV delivery and W i-Fi in a single box (see our IAD
br ochur e for mor e details).
4 www.dialog-semiconductor.com 5Development tools
Choose a Dialog solution and you ar e choosing a solution that comes with all the support you need to bring
your pr oduct to market fast. The extensive range of support available includes tools developed by Dialog as
well as thir d-party vendors.
Development kits
T o help accelerate your pr oduct cr eation cycle, we of fer complete development kits for all our SmartPulse™
modules.
The wir eless sensor module kit includes a SC14CVMDECT -based basestation, a SC14WSMDA T A development
boar d (featuring a module, various interfaces, battery and power connector) and USB cables. Y ou also get
demonstration softwar e, application examples and the Athena IDE, enabling rapid application cr eation.
Meanwhile, our DECT IP basestation r efer ence design kit of fers easy pr ototyping of inter net-enabled DECT
ULE systems. The kit featur es a DECT IP basestation that combines a SC14CVMDECT for basestation-node
communication with one of our energy-effcient V oIP pr ocessors for hassle-fr ee inter net connectivity . It comes
complete with example sensor and actuator nodes based on the SC14WSMDA T A wir eless sensor module, plus
our Rhea μClinux-based V oIP softwar e development platform.
Applications
Athena IDE Utility metering
The Athena Integrated Development Envir onment (IDE) is an easy-to-use, open-sour ce toolset for cr eating new • Remote metering
application softwar e. It featur es an Eclipse-based IDE, a GNU C/C++ compiler and linker , and a code download • Energy monitoring
and verifcation tool – all pr econfgur ed and tested to work straight out of the box. • Equipment contr ol
Healthcare
• Personal Help Button (PHB) (healthcar e alarms for the elderly)
• Home car e monitoring
• Activity
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Security
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• Alarm buttons with voice
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Home automation
• Climate contr ol (Heating V entilation Air Conditioning system)
• Inter net contr olled home appliances
• Home contr ol display
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