Search results for "RJ"
showing 10 items of 6589 documents
Smart plugs: A low cost solution for programmable control of domestic loads
2014
International audience; Balancing energy demand and production is becoming a more and more challenging task for energy utilities. This is due to a number of different reasons among which the larger penetration of renewable energies which are more difficult to predict and the meagre availability of financial resources to upgrade the existing power grid. While the traditional solution is to dynamically adapt energy production to follow the time-varying demand, a new trend is to drive the demand itself by means of Direct Load Control (DLC). In this paper we consider a scenario where DLC functionalities are deployed at a large set of small deferrable energy loads, like appliances of residential…
Large Scale Control of Deferrable Domestic Loads in Smart Grids
2016
International audience; In this paper, we investigate a realistic and low-cost deployment of large scale direct control of inelastic home appliances whose energy demand cannot be shaped, but simply deferred. The idea is to exploit 1) some simple actuators to be placed on the electric plugs for connecting or disconnecting appliances with heterogeneous control interfaces, including non-smart appliances, and 2) the Internet connections of customers for transporting the activation requests from the actuators to a centralized controller. Our solution requires no interaction with home users: in particular, it does not require them to express their energy demand in advance. A queuing theory model …
Multicriteria evaluation of sustainable energy solutions for Colosseum
2017
Abstract Colosseum is a large office building in the capital region of Finland. The building owner operates on the highly competitive office rental market. With increasing emphasis on environmental responsibility, energy efficiency and sustainable energy solutions can provide competitive edge on the rental market. This study evaluates in terms of multiple criteria different alternatives to enhance the energy solutions of the building. The alternatives included different configurations of solar power, ground source heat, and roof constructions, along with district heating. Decision criteria included internal rate of return, energy efficiency, CO2 emissions, and attractiveness. Attractiveness…
Ubiquitous Co-Driver System and Its Effects on the Situation Awareness of the Driver
2008
The aim of this paper is to explore the effects of ubiquitous computing in cars on the situation awareness and expectations of the driver. In a driving simulation environment with participants using a co-driver system, we investigated how people took and recovered from misinformation provided by the system. The system presented safety-critical information about the upcoming curves on the road, but in the experiment part of the messages contained false information. The effects of this information on participants’ behavior were investigated. On the grounds of the experiment, we discuss two approaches for investigating drivers’ situational awareness, which are based on either mental workload o…
Unidirectional Direct Load Control through Smart Plugs
2014
International audience; Balancing energy demand and production is be-coming a more and more challenging task for energy utilities also because of the larger penetration of renewable energies which are more difficult to predict and control. While the traditional solution is to dynamically adapt energy production to follow time-varying demand, a new trend is to drive demand itself. Most of the ongoing actions in this direction involve greedy energy consumers, like industrial plants, supermarkets or large buildings. Pervasive communication technologies may allow in the near future to push further the granularity of such approach, by having the energy utility interacting with residen-tial appli…
Virtual Worlds as Philosophical Tools : How to Philosophize with a Digital Hammer by Stefano Gualeni
2017
A book review of Stefano Gualeni. Virtual Worlds as Philosophical Tools: How to Philosophize with a Digital Hammer, Palgrave Macmillan, 2015, 194 pp., USD 64.65, ISBN 1137521775 nonPeerReviewed
Velocity sensorless control of uncertain load using RKF tuned with an evolutionary algorithm and mu-analysis
2010
Abstract In case of a velocity control scheme for a load directly driven by an actuator, large variations of its parameters are problematic due to possible instability and large variations of the final performances. This performances are then decreasing if a sensorless control is implemented due to cost, reliability or application constraints. This paper proposes solutions to quickly and accurately tune an observer with a lower computer time consumption and lower conception time. A previous calculated state feedback is used as base for a Kalman filter with special noise matrices. An evolutionary algorithm optimizes the observers degrees of freedom all over the variations. The mu-analysis th…
Limited English proficiency : case studies of Finns with limited English proficiency
2017
Englannin näkyvyys suomalaisessa yhteiskunnassa on kasvanut vahvasti viime vuosikymmenien aikana. Englannin rooli ja sen merkitys suomalaisten elämässä on lisääntynyt erityisesti nuorten parissa. Aikaisemmat tutkimukset työelämästä viittaavat siihen, että englannin kielen taito nähdään jopa perusosana ammatillista osaamista. Tiedemaailmassa taas on havahduttu siihen, että tiedekeskustelu tapahtuu yhä useammin englanniksi suomen kielen kustannuksella. Tämä saattaa vaikeuttaa osaltaan suomalaisten korkeakoulujen mahdollisuuksia käyttää suomenkielistä opetusmateriaalia. Samaan aikaan noin joka neljäs suomalainen arvio itse oman englannin kielen taitonsa puutteelliseksi. Näin ollen herääkin kys…
Heteronormeja vastustavan tyttöyden kompensaatiot Siiri Enorannan Surunhauras, lasinterävä ja Maria Turtschaninoffin Anaché: Myter från akkade -nuort…
2017
Pohjoismaiseen lasten- ja nuortenkirjallisuuteen on rakentunut lähes normatiivinen kuva vallitsevaa sukupuolijärjestystä murtavasta vahvasta tyttöydestä, joka on näkyvissä myös suomalaisessa 2010-luvun nykytyttökirjallisuudessa. Vuosituhannen vaihteen jälkeen kirjallisuuden tyttökuvat ovat kuitenkin moninaistuneet, eikä tyttöhahmojen tarvitse olla enää kaikkivoipaisia. Tyttöyden esitysten moninaistumisen myötä aiemmin liki säännönmukaisesti heteronormatiivisten tyttökirjojen päähen-kilöiksi on noussut myös heteronormeja vastustavia tyttöhahmoja. Artikkelissa tarkastellaan Siiri Enorannan Surunhauras, lasinterävä (2015) ja Maria Turtschaninoffin Anaché: Myter från akkade (2012) –nuortenfanta…
Homo- ja biseksuaalisen tyttöyden representaatiot Siiri Enorannan Surunhauras, lasinterävä ja Maria Turtschaninoffin Anaché: Myter från akkade -fant…
2017
Tarkastelen maisterintutkielmassani lähiluvun keinoin kahdessa kotimaisessa nuorten fantasiatyttöromaanissa, Siiri Enorannan teoksessa Surunhauras, lasinterävä (2015) sekä Maria Turtschaninoffin teoksessa Anaché: Myter från akkade (2012), esiintyviä heteronormista poikkeavan tyttöyden representaatioita. Erityisesti huomioni kiinnittyy pohjoismaiseen lasten- ja nuortenkirjallisuuteen rakentuneeseen vahvan tyttöyden perinteeseen (mm. Österlund 2011, 217, 236), joka on selkeästi näkyvissä myös kohdeteoksissani – analyysini perustana on tarkastella, millä tavalla vahvan tyttöyden perinne kiinnittyy ja näyttäytyy kohdeteosteni kuvaamien heteronormista poikkeavien tyttöhahmojen esityksissä. Tutki…