Search results for "DEP"
showing 10 items of 10555 documents
Distribution and sources of bulk organic matter (OM) on a tropical intertidal mud bank in French Guiana from elemental and isotopic proxies
2014
International audience; The mobile French Guiana coast is a shoreface region downdrift of the Amazon River, where enormous quantities of inorganic and organic materials are exchanged with the Atlantic Ocean. The rapid accumulation of these materials forms highly unstable shore-attached mud banks, which can be temporally emerged and then rapidly colonized and stabilized by microphytobenthos and opportunistic mangroves (i.e. Avicennia germinans). Mud banks are preferential sites for the accumulation and significant remineralization of organic matter (OM) due to intense erosion/deposition cycles and potential biological colonization. The distribution and sources of bulk sedimentary OM were cha…
Vahvempaa perusrahoitusta ja kriittistä diversiteettiä : viime vuosikymmenien tiedepolitiikka puheenjohtajien silmin
2022
Edistyksellisen tiedeliiton puheenjohtajat ovat luotsanneet liittoa monenlaisissa koulutus- ja tiedepoliittisissa tilanteissa. Taina Saarinen haastatteli ja keräsi muilla tavoin tietoa puheenjohtajilta eri vuosikymmeniltä. Haastateltaviksi lähtivät Kalervo Väänänen (puheenjohtaja vuonna 1999), Tytti Isohookana-Asunmaa (2004-2006) ja Veikko Halttunen (2020-2021). Sähköpostitse kysymyksiin vastasi Pekka Puska (1978-1980). Jutussa on myös hyödynnetty Olavi Borgin (1981) ja Pekka Neittaanmäen (2000-2003) julkaisuja. nonPeerReviewed
Time-dependent screening explains the ultrafast excitonic signal rise in 2D semiconductors
2020
We calculate the time evolution of the transient reflection signal in an MoS$_2$ monolayer on a SiO$_2$/Si substrate using first-principles out-of-equilibrium real-time methods. Our simulations provide a simple and intuitive physical picture for the delayed, yet ultrafast, evolution of the signal whose rise time depends on the excess energy of the pump laser: at laser energies above the A- and B-exciton, the pump pulse excites electrons and holes far away from the K valleys in the first Brillouin zone. Electron-phonon and hole-phonon scattering lead to a gradual relaxation of the carriers towards small $\textit{Active Excitonic Regions}$ around K, enhancing the dielectric screening. The acc…
Do absolute pitch possessors have a field independent cognitive style?
2009
The factors contributing to the development of absolute pitch (AP) are still not fully understood. It seems to be neither completely inherited nor completely teachable. This study tested the hypothesis, that individual differences in cognitive style influence AP development. Specifically, it investigated whether adult AP possessors can be characterized by a field independent cognitive style while handling visual and musical tasks. Thirty professional musicians performed tests of absolute and relative pitch abilities, a visual and a musical task measuring field independence, and visual tasks measuring intellectual functioning. The absolute pitch test resulted in a continuous distribution of …
Tax incentives to encourage corporate investment in Latvia
2020
During 2006‐2017, Latvia has applied a rather generous accelerated depreciation (AD) policy to stimulate firm investment. The AD policy included: (1) the general AD scheme, (2) incentives to acquire new technological equipment, and (3) Investment incentives in the specially assisted areas. This paper analyses the effect of accelerated depreciation policy on firm investment using administrative firm‐level data for 2007–14. Lacking data for a natural experiment (AD began before our sample period), we use difference‐in-differences methodology with identification based on variation either across time (the crisis period serving as quasi‐counterfactual) or by firm size (with large firms unlikely …
Depth-of-Field of the Accommodating Eye
2014
Our eyes project information from a three-dimensional world to a basically two-dimensional surface, corresponding to the photoreceptor plane in the retina. In theory, only one plane or surface of world can be in focus at one time. However, the eye exhibits a certain tolerance to out-of-focus images, a feature that is known as depth-of-focus (DOF). The corresponding distance range in which the objects are seen “clearly” is known as depth-of-field (DOFi). Although DOF and DOFi refer to an interval of distances or a dioptric range in the image and object space, respectively, both parameters define a similar concept and are usually interchangeable. This article will mainly refer to DOFi because…
How Does the pH of Tree Bark Change with the Presence of the Epiphytic Bryophytes from the Family Orthotrichaceae in the Interaction with Trunk Incli…
2021
The pH of tree bark is affected by many factors, amongst them epiphytic bryophytes changing in their active state environment. Thus, we hypothesized that bryophytes can change bark acidity, dependently of the inclination of the branches, as inclination affect the water regime and particle deposition. We measured the pH under bryophyte cushions and compared it to nearby naked bark. Additionally, we compared results with experimental bark covering with neutral cover. We found that the pH of naked bark declines with decreasing inclination of trunks. Although bryophyte cover did not generally change the pH of the bark, there was a significant interaction with inclination: with higher inclinatio…
Nouvelles données sur le genre Bragasellus (Crustacea: Isopoda: Asellidae
1996
From now on, the genus Bragasellus Henry & Magniez, 1968 includes 2 oculated and 17 stygobiotic species. As a natural and monophyletic taxonomic unit, we consider it a good genus. Its original area corresponds to the north-west quarter of the Iberian Peninsula. Secondarily, this area has extended eastward, using mainly the alluvial channels of hydrographic systems (Ríos Douro + Ebro and tributaries), finally reaching the underground waters of several Mediterranean rivers. This active expansion is exclusively due to the migration of two stygobiotic sibling species: B. lagari Henry & Magniez, 1973 towards the high basin of the Río Tajo, then downstream to the basins of the Ríos Jucar and Turi…
Aging well in the community: Understanding the complexities of older people's dial-a-ride bus journeys
2021
Older peoples' independent living in their own homes and their ability to move around and maintain social relations in their communities have been acknowledged as important aims to support their well-being. In this article, we study Special Transport Services as a means to support older persons with ‘aging in place’ – that is, within their communities. From “go-alongs” (shared dial-a-ride bus journeys) and “sit-down interviews” (at participant's home or a café) with 12 older people living in a Finnish suburb, we explored their everyday dial-a-ride bus trips to the local mall. We used actor-network theory and the concept of motility to show how at first glance what appeared to be simple dial…
Administrative Capacity as a Constraint to Fiscal Decentralization. The Case of Romania and Poland
2020
This paper considers the problem of administrative capacity as one of the main requirements that the accession countries seeking EU membership had to meet, and as a prerequisite to the decentralization of their public sectors and public finances. The selected decentralization problems are analyzed using the cases of two countries: Romania and Poland. The results of a theoretical and practical evaluation of administrative capacity as a likely obstacle to fiscal decentralization are presented taking account of the different levels of decentralization in Poland and Romania. A comparative analysis of Romania and Poland shows that administrative capacity can be a constraint for fiscal decentrali…