Search results for "HTA"

Structural and chemical analysis of annealed plasma-enhanced atomic layer deposition aluminum nitride films

2016

Plasma-enhanced atomic layer deposition was utilized to grow aluminum nitride (AlN) films on Si from trimethylaluminum and N2:H2 plasma at 200 °C. Thermal treatments were then applied on the films which caused changes in their chemical composition and nanostructure. These changes were observed to manifest in the refractive indices and densities of the films. The AlN films were identified to contain light element impurities, namely, H, C, and excess N due to nonideal precursor reactions. Oxygen contamination was also identified in the films. Many of the embedded impurities became volatile in the elevated annealing temperatures. Most notably, high amounts of H were observed to desorb from the…

Large enhancement of spin pumping due to the surface bound states in normal metal/superconductor structures

2020

We show that the spin pumping from ferromagnetic insulator into the adjacent metallic spin sink can be strongly stimulated by the superconducting correlations. The key physical mechanism responsible for this effect is the presence of Andreev bound states at the ferromagnetic insulator/superconductor interface. We consider the minimal model when these states appear because of the suppressed pairing constant within the interfacial normal layer. For thin normal layers we obtain a strongly peaked temperature dependence of the Gilbert damping coefficient which has been recently observed in such systems. For thicker normal layers the Gilbert damping monotonically increases down to the temperature…

Microwave photoassisted dissipation and supercurrent of a phase-biased graphene-superconductor ring

2021

Irradiating normal-superconducting junctions with microwave photons produce spectacular effects, such as Shapiro steps and photoinduced modifications of the dc supercurrent. Moreover, microwave irradiation can also have other, hitherto unexplored consequences, such as a photoassisted dissipation which is phase dependent. Here we present a finite-frequency measurement of both the dissipation and the supercurrent of a phase-biased graphene-superconductor junction in response to microwave photons. We find that, while the supercurrent response is well described by existing theory, the dissipation exhibits unexpected effects which need new theoretical elucidation. Especially with high frequency …

Mattila, Taavettila ja Jokihuhta

Moral Conflicts as a Motor of Moral Identity Development at Work: Self-Awareness and Micro Processes in Weekly Experiences

2019

Based on the identity process model, we investigated developmental differences in moral identity between leaders by analyzing their personal experiences of and reactions to actual moral conflicts at work. Using a longitudinal (16-week) qualitative design, we collected weekly moral conflict stories from ten leaders. First, after an inductive exploratory analysis we found that the leaders showed different levels of awareness (descriptive, reflective, and evaluative) with regard to how far they were able to identify their own role, values, feelings, and behaviors in each moral conflict. Second, after a theory-driven analysis, the integrated model of the micro processes of identity development …

“Kirjastolla ei ole hätää, kun se tunnistaa ydinosaamisensa” : haastattelussa johtaja Ari Muhonen

2013

Bioindikatoruppföljning av luftkvaliteten i Vasaregionen åren 2006-2007

2008

Vaasan alueen ilmanlaadun bioindikaattoritutkimus vuosina 2006-2007

2008

Organisaatiomuutoskeskustelu suomalaisten talouslehtien sivuilla

2016

Muutoksen hyväksyminen on organisaatioiden selviytymisen kannalta hyvin tärkeää erityisesti nykyaikana, sillä muutos on tullut pysyväksi osaksi organisaatioiden arki-päivää. Tämän tutkielman tavoitteena on käsitteellistää muutos, jotta muutoksesta voidaan luoda eheä ja yhtenäinen kokonaisuus. Tutkielma koostuu muutoksen, muutosjohtamisen ja muutosviestinnän tarkastelusta laadullisen sisällönanalyysin kautta. Tutkielmassa on rakennettu teoreettinen viitekehys muutokselle Harvardin yliopiston professorin, John Kotterin, kahdeksan vaiheisen suunnitellun muutoksen teoriaan pohjautuen. Teoreettisen viitekehyksen sopivuutta nykyaikana vallitsevaan muutoskeskusteluun on analysoitu suomalaisten tal…

To be or not to be: Collaborative Governance and The Case of Continuous Master Planning in Lahti

2020

The benefits of collaborative actions between different stakeholders has been recognized broadly and has been admitted as one of the key factors in regional development. However, the research has so far focused on examining cases retrospectively, leaving a gap in looking into something on-going and uncertain, as well as it has been common to consider regional development through abstracts concepts. Therefore, there exists less information on the practical implementation of the theories and policies within regions. Additionally, it is important to take into consideration the ever-growing trend of cross-sectoral collaboration - however not only in public-private interface, but also involving …