Search results for "kani"

Friction of Shear-Fracture Zones

2017

A shear fracture of brittle solids under compression undergoes a substantial evolution from the initial microcracking to a fully formed powder-filled shear zone. Experiments covering the entire process are relatively easy to conduct, but they are very difficult to investigate in detail. Numerically, the large strain limit has remained a challenge. An efficient simulation model and a custom-made experimental device are employed to test to what extent a shear fracture alone is sufficient to drive material to spontaneous selflubrication. A “weak shear zone” is an important concept in geology, and a large number of explanations, specific for tectonic conditions, have been proposed. We demonstra…

Shape optimization in contact problems with friction

1985

A self-consistent quantification of contributions to differential TGA results of volcanic soil samples

2002

Mechanistic Explanations and Deliberate Misrepresentations

2020

The philosophy of mechanisms has developed rapidly during the last 30 years. As mechanisms-based explanations (MBEs) are often seen as an alternative to nomological, law-based explanations, MBEs could be relevant in IS. We begin by offering a short history of mechanistic philosophy and set out to clarify the contemporary landscape. We then suggest that mechanistic models provide an alternative to variance and process models in IS. Finally, we highlight how MBEs typically contain deliberate misrepresentations. Although MBEs have recently been advocated as critical realist (CR) accounts in IS, idealizations (deliberate misrepresentations) seem to violate some fundamental tenets of CR and rese…

Nonlinear dissipation phenomena in optomechanics

2016

Yksikään kvanttisysteemi ei voi olla täysin eristetty ympäristöstään, mikä johtaa informaation välittymiseen systeemin ja ympäristön välillä. Optomekaniikassa, missä tyypillinen tutkittava systeemi on peileistä koostuva optinen kaviteetti yhdistettynä mekaaniseen värähtelijään, systeemin ja ympäristön lineaarisesta kytkennästä johtuvat dissipaatioilmiöt ovat hyvin tunnettuja. Epälineaarisia ilmiöitä ei kuitenkaan ymmärretä yhtä laajasti. Tutkin epälineaarista kytkentää kaviteetin ja lämpökylvyn välillä ja havainnollistan tästä kytkennästä johtuvia ilmiöitä kuten epälineaarista dissipaatiota. Esitän myös optisen kaviteetin epälineaarisen dissipaation oikeuttavan mallin, missä optinen kavitee…

How customer knowledge affects exploration : generating, guiding, and gatekeeping

2021

The importance of understanding customers in order to sustain the long-term success of the company has been claimed by academics and practitioners for decades, to the point that the claim has turned into a truism. And still, the role of customer knowledge in organizational renewal, especially via explorative new product development (NPD), remains ambiguous. While existing literature generally emphasizes the value of customer knowledge, critics argue that a strong customer focus can also de-motivate and misguide exploration. This study adds clarity to our understanding of this tension by drawing from an intensive analysis of the corporate archives of a rapidly growing high-tech company. The …

On the existence of optimal shapes in contact problems : perfectly plastic bodies

1986

Ikääntyneiden kävelyn biomekaniikka ja nivelrikko

2004

Absence of mutual polariton scatterings for strongly coupled surface plasmon polaritons and dye molecules with large Stokes shift

2013

The understanding and control of the dynamics of hybrid modes consisting of strongly coupled surface plasmon polaritons and molecular excitations of dye molecules is of great timely interest, as it allows one to tailor interactions between optical signals as needed for active all-optical devices. Here we utilize dye molecules with an especially large Stokes shift to demonstrate the absence of mutual scatterings among the strongly coupled hybrid modes. We employ a quantum mechanical three-level model and show that the hybrid modes decay via dephasing and internal relaxation of the molecules to a fluorescing state of the dye, which can be used as a measure for the decay. Our results provide e…

Epävakaa mimeettinen halu Robert Walserin romaanissa Konttoristi

2019

Artikkelissa tutkitaan sveitsiläisen kirjailijan Robert Walserin romaania Konttoristi René Girardin esittämän mimeettisen halun teorian, kaunasta virittyvän syntipukkimekanismin ja myös niistä erillisen mimetismin näkökulmista. Girardin teoriaan luodun katsauksen jälkeen eritellään konttoristina työskentelevän päähenkilön asemaa taloudellisen ja sosiaalisen kilpailun piirissä. Toisin kuin Girardin omissa analyyseissa, päähenkilö on pikemmin mimeettisen halun epävarma ja välillä vastahankainen tukija ja kosketuspinta kuin sen vallassa oleva toimija. Lisäksi käsitellään Walserin kertomatavan vaikutuksia sekä tarinan että kilpailevasta jäljittelystä poikkeavien imaginaaristen vastaavuuksien ta…