Search results for "IFT"
showing 10 items of 2193 documents
Electronic Structures and Molecular Properties of Chalcogen Nitrides Se2N2 and SeSN2
2006
The electronic structures and molecular properties of S2N2 as well as the currently unknown chalcogen nitrides Se2N2 and SeSN2 have been studied using various ab initio and density functional methods. All molecules share a qualitatively similar electronic structure and can be primarily described as 2π-electron aromatics having minor singlet diradical character of 6−8% that can be attributed solely to the nitrogen atoms. This diradical character is manifested in the prediction of their molecular properties, in which coupled cluster and multiconfigurational approaches, as well as density functional methods, show the best performance. The conventional ab initio methods RHF and MP2 completely f…
Fitness and viability of small populations : the effects of genetic drift, inbreeding, and interpopulation hybridization
2012
Cognitive behavioural therapy interventions for insomnia among shift workers: RCT in an occupational health setting
2019
Abstract Introduction The aim of the study was to compare the effectiveness of cognitive behavioural therapy interventions for insomnia (CBT-I) to that of a sleep hygiene intervention in a randomized controlled design among shift workers. We also studied whether the features of shift work disorder (SWD) affected the results. Methods A total of 83 shift workers with insomnia disorder were partially randomized into a group-based CBT-I, self-help CBT-I, or sleep hygiene control intervention. The outcomes were assessed before and after the interventions and at 6-month follow-up using questionnaires, a sleep diary, and actigraphy. Results Perceived severity of insomnia, sleep-related dysfunction…
Tadpole Responses to Environments With Limited Visibility: What We (Don’t) Know and Perspectives for a Sharper Future
2022
Amphibian larvae typically inhabit relatively shallow freshwater environments, and within these boundaries there is considerable diversity in the structure of the habitats exploited by different species. This diversity in habitat structure is usually taken into account in relation to aspects such as locomotion and feeding, and plays a fundamental role in the classification of tadpoles into ecomorphological guilds. However, its impact in shaping the sensory worlds of different species is rarely addressed, including the optical qualities of each of these types of water bodies and the challenges and limitations that they impose on the repertoire of visual abilities available for a typical vert…
Theoretical approaches and frameworks to language maintenance and shift research : a critical review
2019
This article presents a critical overview of theoretical approaches and frameworks to language maintenance and shift research in the area of immigrant languages. It covers the underlying principles of these frameworks and assesses their advantages and shortcomings. The article argues that the field’s theoretical orientations have shifted recently, with a greater emphasis on understanding language maintenance and shift as a dynamic process involving complex interrelationships between space and time. These new trends and new areas of research in relation to language maintenance and shift are highlighted and discussed in different parts of the article. The article concludes by calling on the s…
Development of 2D & 3D cadmium–zinc–telluride spectroscopic imagers for X-ray and gamma ray applications
2021
Språkbadselevers skriftliga kunskaper i svensk grammatik enligt utvecklingsnivåerna av processbarhetsteorin
2016
Tutkielman tarkoituksena oli tarkastella kuudesluokkalaisten kielikylpyoppilaiden ruotsin kieliopin taitoja Manfred Pienemannin prosessoitavuusteorian valossa. Tärkein tutkimuskysymys oli, mille teorian viidestä tasosta oppilaat sijoittuvat. Tutkimuksen materiaalina oli 12 19 oppilaan kirjoittamaa kirjoitelmaa, eli osa kirjoitelmista oli kirjoitettu ryhmässä. Tutkimus oli kvalitatiivinen ja menetelmänä käytettiin teorialähtöistä sisällönanalyysiä. Tulokset osoittivat, että oppilaat sijoittuivat prosessoitavuusteorian neljännelle ja viidennelle tasolle. Parityöskentelystä johtuen tuloksia voidaan tarkastella ennemmin ryhmä- kuin yksilötasolla. Pienestä aineistosta johtuen tuloksia ei myöskää…
Svenskans situation i Finland. Lagar och utbildningssystem
2011
Inledning: I Finland har två språk officiellt status som nationalspråk – finska och svenska. På så vis skiljer sig situationen en del från de övriga nordiska länderna. Situationen skiljer sig på flera punkter också från andra tvåspråkiga nationer (se McRae 2007 för en jämförelse mellan Belgien, Schweiz, Kanada och Finland). Andelen finländare med svenska som modersmål är drygt 5 % jämfört med 91 % som har finska som modersmål. Svenskan och finskan har dock en helt likvärdig status i lagstiftningen. Vidare läser alla elever i svenskspråkiga skolor finska liksom eleverna i finskspråkiga skolor läser svenska. I denna artikel berättar vi översiktligt om den finländska lagstiftningen och om sven…
Evidence of a non-conservative mass transfer in the ultra-compact X-ray source XB 1916-053
2020
The dipping source XB 1916-053 is a compact binary system with an orbital period of 50 min harboring a neutron star. Using ten new {\it Chandra} observations and one {\it Swift/XRT} observation, we are able to extend the baseline of the orbital ephemeris; this allows us to exclude some models that explain the dip arrival times. The Chandra observations provide a good plasma diagnostic of the ionized absorber and allow us to determine whether it is placed at the outer rim of the accretion disk or closer to the compact object. From the available observations we are able to obtain three new dip arrival times extending the baseline of the orbital ephemeris from 37 to 40 years. From the analysis…
The ALHAMBRA survey: evolution of galaxy clustering since z∼1
2014
We study the clustering of galaxies as function of luminosity and redshift in the range $0.35 < z < 1.25$ using data from the Advanced Large Homogeneous Area Medium Band Redshift Astronomical (ALHAMBRA) survey. The ALHAMBRA data used in this work cover $2.38 \mathrm{deg}^2$ in 7 independent fields, after applying a detailed angular selection mask, with accurate photometric redshifts, $��_z \lesssim 0.014 (1+z)$, down to $I_{\rm AB} < 24$. Given the depth of the survey, we select samples in $B$-band luminosity down to $L^{\rm th} \simeq 0.16 L^{*}$ at $z = 0.9$. We measure the real-space clustering using the projected correlation function, accounting for photometric redshifts uncert…