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Public access from 10-mag-2019
Université de Neuchâtel

Imagining the collective future: a sociocultural perspective

Zittoun, Tania ; Gillespie, Alex

In: Imagining collective futures : Perspectives from social, cultural and political psychology, 2018, p. 15-37

The present chapter examines how groups imagine their future from a sociocultural perspective. First, we present our sociocultural model of imagination and its three dimensions, before building on it to account for how collectives imagine the future. We maintain that it is a mistake to assume that because imagination is “not real”, it cannot have “real” consequences. Imagination about the...

Public access from 8-dic-2018
Université de Neuchâtel

Memory in life transitions

Zittoun, Tania

In: Handbook of memory and culture, 2018, p. 209-236

This chapter explores the transformation of autobiographical memory in life transitions. To do so, it proposes a model of autobiographical memory as an oriented sociocultural act, whereby the person imaginatively distances herself from past experiences to produce a meaningful discourse on her past. This model is applied to the development of autobiographical memory during adolescence, a crucial...

Public access from 1-mag-2019
Université de Neuchâtel

The Velvet revolution of land and minds

Zittoun, Tania

In: The Psychology of Radical Social Change : From Rage to Revolution, 2018, p. 140-158

Université de Neuchâtel

Electrically-driven pure amplitude and frequency modulation in a quantum cascade laser

Shehzad, Atif ; Brochard, Pierre ; Matthey, Renaud ; Blaser, Stéphane ; Gresch, Tobias ; Maulini, Richard ; Muller, Antoine ; Südmeyer, Thomas ; Schilt, Stéphane

In: Optics Express, 2018, vol. 26, no. 9, p. 12306-12317

We present pure amplitude modulation (AM) and frequency modulation (FM) achieved electrically in a quantum cascade laser (QCL) equipped with an integrated resistive heater (IH). The QCL output power scales linearly with the current applied to the active region (AR), but decreases with the IH current, while the emission frequency decreases with both currents. Hence, a simultaneous modulation...

Public access from 31-mag-2019
Université de Neuchâtel

Random partitioning and adaptive filters for multiple-point stochastic simulation

Sharifzadehlari, M ; Fathianpour, N ; Renard, Philippe ; Amirfattahi, R

In: Stochastic Environmental Research and Risk Assessment, 2018, vol. 32, p. 1375-1396

Multiple-point geostatistical simulation is used to simulate the spatial structures of geological phenomena. In contrast to conventional two-point variogram based geostatistical methods, the multiple-point approach is capable of simulating complex spatial patterns, shapes, and structures normally observed in geological media. A commonly used pattern based multiple-point geostatistical simulation...

Université de Neuchâtel

Compact ultrafast frequency combs

Hakobyan, Sargis ; Südmeyer, Thomas (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2018.

Optical frequency combs provide a direct and phase-coherent link between the optical spectral region of the electromagnetic spectrum (i.e., hundreds of THz frequencies) and the radio-frequency domain (MHz-GHz frequencies). As a result, they constitute a unique and powerful tool for various applications such as broadband high-resolution molecular spectroscopy, optical metrology, astrophysics,...

Université de Neuchâtel

Novel ultrafast high-power thin-disk laser oscillators and applications for metrology and XUV generation

Paradis, Clément ; Südmeyer, Thomas (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2018.

Ultrafast lasers have revolutionized research in fundamental physics, chemistry and biology as well as industrial applications. A great number of experiments benefit from the development of Yb-based high-power femtosecond laser sources. These systems typically include a low-power mode-locked oscillator followed by amplifier stages relying on fiber, slab or thin-disk technologies. In many cases,...

Public access from 15-mag-2019
Université de Neuchâtel

Simulating rainfall time-series : how to account for statistical variability at multiple scales?

Oriani, Fabio ; Mehrotra, R ; Mariéthoz, Grégoire ; Straubhaar, Julien ; Sharma, A ; Renard, Philippe

In: Stochastic Environmental Research and Risk Assessment, 2018, vol. 32, p. 321-340

Daily rainfall is a complex signal exhibiting alternation of dry and wet states, seasonal fluctuations and an irregular behavior at multiple scales that cannot be preserved by stationary stochastic simulation models. In this paper, we try to investigate some of the strategies devoted to preserve these features by comparing two recent algorithms for stochastic rainfall simulation: the first one is...