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Author:Äyräväinen, Juho
Title:Comparing the energy characteristics of native and web applications in mobile devices
Natiivien ja Web-sovellusten energiankäytön vertailu mobiililaitteissa
Publication type:Master's thesis
Publication year:2010
Pages:11 + 56 s.      Language:   eng
Department/School:Informaatio- ja luonnontieteiden tiedekunta
Main subject:Ohjelmistotekniikka   (T-106)
Supervisor:Saikkonen, Heikki
Instructor:Hirvisalo, Vesa
OEVS:
Electronic archive copy is available via Aalto Thesis Database.
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Location:P1 Ark Aalto     | Archive
Keywords:Qt
AJAX
smart phone
web application
energy efficiency
energy measurement
Qt
AJAX
älypuhelin
web sovellus
energiatehokkuus
energiamittaus
Abstract (eng): Modern cellular phones have become computers.
The networks are as fast as the wired counterparts of only a few years back.
Yet the plethora of different incompatible devices causes problems for the application developers.
Web technologies are one possible solution for this problem.

The most important resource in mobile environment is energy.
This work studies how do web applications affect the energy consumption of mobile devices and how to measure the energy consumption of an application in a smart phone.
What kind of characteristics they present, and do they differ from the characteristics of other types of applications.
Comparison to native applications is made.

Measurements are done on Nokia's N97 smart phone comparing different AJAX and Qt applications.
These ranged from custom made social media like application through real world calendar and music player applications to various microbenchmarks.
Qt applications have a slight edge in energy consumption but not a big one.
The choice between AJAX and Qt is not the dominant factor in the energy consumption of the application.
Abstract (fin): Nykyiset matkapuhelimet ovat enemmän tietokoneita kuin puhelimia.
Matkapuhelinverkot ovat yhtä nopeita kuin muutaman vuoden takaiset kiinteät tietoverkot.
Lukuisat erilaiset laitteet aiheuttavat kuitenkin päänvaivaa sovelluskehittäjille.
Web-teknologiat tarjoavat yhtä ratkaisua näihin ongelmiin.

Tärkein resurssi matkakäytössä 011 energia.
Tässä työssä tarkastellaan kuinka Web-sovellukset vaikuttavat puhelimen energiankulutukseen ja kuinka sovelluksen energiankulutusta voidaan mitata nykyaikaisissa älypuhelimissa.
Millaisia ominaisuuksia näillä sovelluksilla on, ja eroavatko ne muun tyyppisien sovellusten ominaisuuksista.
Tätä tarkastellaan vertaamalla Web-sovelluksia natiiveihin sovelluksiin.

Nokian N97-älypuhelimella tehdyissä mittauksissa vertaillaan erilaisia AJAX- ja Qt-sovelluksia.
Nämä sovellukset vaihtelevat itse tehdystä sosiaalista mediaa matkivasta sovelluksesta oikean kalenterin ja musiikkisoittimen kautta erilaisiin mikrotyökuormiin.
Qt-sovellukset ovat hieman energiatehokkaampia mutta eivät suurella erolla.
Valinta AJAX:in ja Qt:n välillä ei määrittele energiankulutusta, vaan muut asiat hallitsevat sitä.
ED:2010-09-03
INSSI record number: 40405
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