Search results for "tietotekniikka"
showing 10 items of 282 documents
Single-Event Effects in the Peripheral Circuitry of a Commercial Ferroelectric Random Access Memory
2018
International audience; This paper identifies the failure modes of a commercial 130-nm ferroelectric random access memory. The devices were irradiated with heavy-ion and pulsed focused X-ray beams. Various failure modes are observed, which generate characteristic error patterns, affecting isolated bits, words, groups of pages, and sometimes entire regions of the memory array. The underlying mechanisms are discussed.
Assessment of Proton Direct Ionization for the Radiation Hardness Assurance of Deep Submicron SRAMs Used in Space Applications
2021
Proton direct ionization from low-energy protons has been shown to have a potentially significant impact on the accuracy of prediction methods used to calculate the upset rates of memory devices in space applications for state-of-the-art deep sub-micron technologies. The general approach nowadays is to consider a safety margin to apply over the upset rate computed from high-energy proton and heavy ion experimental data. The data reported here present a challenge to this approach. Different upset rate prediction methods are used and compared in order to establish the impact of proton direct ionization on the total upset rate. No matter the method employed the findings suggest that proton dir…
Proton Direct Ionization Upsets at Tens of MeV
2023
Experimental monoenergetic proton single-event upset (SEU) cross sections of a 65-nm low core-voltage static random access memory (SRAM) were found to be exceptionally high not only at low energies ($ 3 MeV and extending up to tens of MeV. The SEU cross Section from 20-MeV protons exceeds the 200-MeV proton SEU cross Section by almost a factor of 3. Similarly, monoenergetic neutron cross sections at 14 MeV are about a factor of 3 lower than the 20-MeV proton cross section. Because of Monte Carlo (MC) simulations, it was determined that this strong enhancement is due to the proton direct ionization process as opposed to the elastic and inelastic scattering processes that dominate the SEU res…
Moment of dialogic leadership in Finnish IT organisation
2020
Purpose The purpose of this study is to describe the construction of leadership through authentic dialogues at work and leaders’ actions as contributors to dialogic leadership. Design/methodology/approach The authors collected the data by recording the organisation’s meetings and discussions and used content analysis of dialogic leadership and typifying of critical moments as analytical methods. Findings On the basis of the findings, this paper suggests that dialogic leadership begins with a startup critical moment and progresses through the different positions by manager and employees through democratic interaction. Individual and collective level learning of participants and the formatio…
The Role of Enterprise Architecture in Building and Sustaining Information Technology : Enabled Organizational Agility
2021
Kohti innovatiivista tietotekniikan opetuskäyttöä : kansainvälisen SITES 2006 -tutkimuksen tuloksia
2008
Tieto- ja viestintätekniikan mahdollisuuksiin opetuksen ja oppimisen edistämisessä on kohdistettu suuria odotuksia viimeisten vuosikymmenten aikana. Nopea teknologinen kehitys ja syvälliset muutokset monissa ihmisten toiminnoissa ovat herättäneet keskustelua siitä, minkälainen rooli koulutuksella sekä tieto- ja viestintäteknologialla on tietoyhteiskuntakehityksessä. Eri puolilla maailmaa on myös strategisilla linjauksilla osoitettu suuntia sille, miten koulutus voisi edistää aktiivisten ja osaavien tietoyhteiskunnan kansalaisten kasvattamista. Kansainvälisessä SITES 2006 -tutkimuksessa selvitettiin, missä määrin ja millä tavoin eri maissa tietotekniikan käyttöä integroidaan opetukseen. Tutk…
Examining business models of Software-as-a-Service companies
2013
Contrasting Internationalization Paths of Product- and Service-oriented Software Firms
2019
The internationalization of software firms has been widely researched topic over the last two decades. However, the most of the studies have treated software firms as a homogeneous group, ignoring the fact that software firms actually differ greatly in terms of having either a product or a service orientation. Based on earlier literature, we hypothesized that software product firms would show a tendency to internationalize earlier and at a smaller size than software service firms, and that product firms would show a greater tendency to target countries that are both geographically and culturally distant. In fact, we found no support for most of our hypotheses, with relatively strong and sta…
Sosiaalisten verkkosovellusten tietoturva
2011
Ihmisten sosiaalinen elämä on siirtynyt kasvavissa määrin sosiaaliseen mediaan. Sosiaalinen media on toimintaympäristö, jossa käyttäjällä on tärkeä rooli tietoturvan toteutuksessa. Tämän ainutlaatuisuuden takia sosiaaliselle medialla on erityisiä vaatimuksia tietoturvallisuudelle. Näitä peilaamalla liiketoiminnallisiin tavoitteisiin, saadaan sosiaalisen median tietoturvariskit. Sosiaalisille medioille tavallisia hyökkäyksiä käydään läpi sekä sitä, kuinka suojautua niiltä. Opinnäytteessä esiteltyjä metodeja ja konventioita käyttämällä suoritetaan hyökkäysskenaariot.
Intended Learning Outcomes of Seven Finnish B.Sc. in IT Programs
2021
Defining the intended learning outcomes is a significant part of curriculum design. Especially,the program-level competence requirements outline the objectives of the education, align the more detailed program structures and content of the curriculum, and create the basis for constructive alignment. Several different bodies aim at defining the goals of engineering programs on different levelsof abstraction.Some of these documents can be considered as statements of the 'minimum threshold'.Respectively, others provide detailed guidelines to support the design of post-secondary programsin specific engineering fields. For example, the CDIO Initiative has defined a general reference syllabus aim…