Search results for "toe"
showing 10 items of 3824 documents
Suomalaisten ohjelmistoyritysten kumppanuussuhteet
2018
Ohjelmistoliiketoiminta eroaa perinteisestä valmistusliiketoiminannasta usein eri tavoin, sillä ohjelmistoliiketoiminnassa kaupankäynnin kohteena ovat ohjelmistot ja niihin liittyvät palvelut. Ohjelmistot ovat aineettomia, korkean katteen tuotteita, joita voidaan kopioida ja jaella kansainvälisille markkinoille matalin kustannuksin Internetin välityksellä. Ohjelmistoyritykset toimivat nykyään yleensä osana ohjelmistoekosysteemejä, joissa yritykset samanaikaisesti täydentävät toistensa kyvykkyyksiä sekä kilpailevat keskenään. Ohjelmistoekosysteemeissä toimivien yritysten menestyminen riippuu koko ohjelmistoekosysteemin menestyksestä. Tämän takia ohjelmistoekosysteemit ovat nykyään tärkeä osa…
Yrittäjyyden lyhyt oppimäärä : tapaustutkimus yrittämisestä Suomessa vuosina 1987-1994
2008
Tutkin pienyrittämistä ja pienyrittäjää vuosina 1987-1994, jolloin Suomi nousi kasinotalouden aallonharjalle, viipyi siellä hetken ennen syöksymistään laman kurimukseen. Toimin tuona aikana yrittäjänä ja kirjoitin kokemuksistani omaelämkerrallisen tarinan. Tarinani on osa aineistoani. Käyn sen avulla dialogia yrittäjyystutkimuksen, aikaa koskevan tutkimuksen ja kirjoittelun kanssa. Tarkastelen yrittäjyyttä sen sisältä näkökulman kuitenkin avautuessa ulos yhteiskuntaan. Koska omaelmäkerrallisen tarinani rooli on tutkimuksessa keskeinen, tarkastelen aluksi omaelämäkerrallisen kirjoittamisen ehtoja ja pohdin miten voin asettua omaksi tutkimuskohteekseni. Tämän jälkeen tarkastelen yritykseni pe…
Kaksi naista kasvotusten - duografia opettajuuden ja naiseuden tutkimusmetodina
2001
Reframing Teacher Education: Towards the Integration of Phenomenon-Based Curriculum Reform and Organizational Culture
2021
In this article, we report a case study of our experiences of a curriculum reform process based on the principles of phenomenon-based learning in higher education in the context of Finnish teacher education. We explore how democracy and participation were present in the decision making process, highlighting the challenges of promoting the phenomenon-based approach and collaboration. First, we describe the reform’s rationale, then the theoretical framework, methodology and the reform process. Next, we reflect on our experiences through documen tary and interview data. The change process included representative and participative democ racy approaches as well as an aristocratic approach. An in…
New Voices from Intersecting Identities Among International Students Around the World
2022
In this article, we introduce our special issue, “International students’ lived experiences in the era unprecedented uncertainty and challenges: New voices from intersectional identities.” Our motivation and intention for this special issue, the focus, and the overall methodological approach are discussed. In addition to presenting the contributions of each article to this issue, we also discuss what we (all authors of this special issue) try to talk and how our voices are reflecting our unique experiences of coming to the new counties and leaving where we lived as international students by unfolding our stories and multiple identities that are intersecting while we experienced.
Radiation Response of Ce-Codoped Germanosilicate and Phosphosilicate Optical Fibers
2016
We report an experimental investigation on the effects of Ce-codoping in determining the radiation response of germanosilicate and phosphosilicate Optical Fibers (OFs) in the UV-Visible domain and up to doses of $1~\hbox{MGy}({\rm SiO}_{2})$ . We show that the addition of Ce strongly impacts the Radiation Induced Attenuation (RIA) of both types of fibers. In the first case the radiation induced losses increase, whereas in the second one decrease. By combining the online RIA measurements with the Electron Paramagnetic Resonance (EPR) ones, we are able to infer the basic microscopic mechanisms taking place under irradiation, which involve the cerium codopant and some of the known Ge-related o…
On-Line Characterization of Gamma Radiation Effects on Single-Ended Raman Based Distributed Fiber Optic Sensor
2016
We report distributed temperature measurements based on Raman scattering performed during steady state $\gamma $ -ray irradiation at a dose rate of 1 kGy( ${\rm SiO}_{2}$ )/h and up to a total ionizing dose (TID) of $\sim 0.1\ \hbox{MGy}$ . We characterize on-line the evolution of the performances of a single-ended Raman distributed temperature sensor (RDTS) during the $\gamma $ -ray exposure of different classes of commercial multimode fibers (MMFs) acting as the sensing element. RDTS is influenced by the radiation-induced attenuation (RIA) phenomena leading to both large errors in the temperature measurements and a diminution of the useful sensing length. The amplitude of the radiation-in…
Temporal spying and concealing process in fibre-optic data transmission systems through polarization bypass
2014
Recent research has been focused on the ability to manipulate a light beam in such a way to hide, namely to cloak, an event over a finite time or localization in space. The main idea is to create a hole or a gap in the spatial or time domain so as to allow for an object or data to be kept hidden for a while and then to be restored. By enlarging the field of applications of this concept to telecommunications, researchers have recently reported the possibility to hide transmitted data in an optical fibre. Here we report the first experimental demonstration of perpetual temporal spying and blinding process of optical data in fibre-optic transmission line based on polarization bypass. We succes…
Investigation of Coating Impact on OFDR Optical Remote Fiber-Based Sensors Performances for Their Integration in High Temperature and Radiation Envir…
2016
The response of optical frequency-domain reflectometry-based temperature sensors is here investigated in harsh environments (high temperature, high radiation dose) focusing the attention on the impact of the fiber coating on the sensor performances in such conditions. Our results demonstrate that the various coating types evolve differently under thermal treatment and/or radiations, resulting in a small (<5%) change in the temperature coefficient of the sensor. The identified procedure, consisting of a prethermal treatment of the fiber at its maximum coating operating temperature, is here verified up to 150 °C for higherature acrylate and up to 300 °C for polyamide coating. This method allo…
A universal optical all-fiber omnipolarizer
2012
International audience; Wherever the polarization properties of a light beam are of concern, polarizers and polarizing beamsplitters (PBS) are indispensable devices in linear-, nonlinear- and quantum-optical schemes. By the very nature of their operation principle, transformation of incoming unpolarized or partially polarized beams through these devices introduces large intensity variations in the fully polarized outcoming beam(s). Such intensity fluctuations are often detrimental, particularly when light is post-processed by nonlinear crystals or other polarization-sensitive optic elements. Here we demonstrate the unexpected capability of light to self-organize its own state-of-polarizatio…