Search results for "Function"

showing 10 items of 14432 documents

Functional structure of European forest beetle communities is enhanced by rare species

2022

Biodiverse communities have been shown to sustain high levels of multifunctionality and thus a loss of species likely negatively impacts ecosystem functions. For most taxa, however, roles of individual species are poorly known. Rare species, often most likely to go extinct, may have unique traits and functional roles. Alternatively, rare species may be functionally redundant, such that their loss would not disrupt ecosystem functions. We quantified the functional role of rare species by using captures of wood-living (saproxylic) beetle species, combined with recent databases of morphological and ecological traits, from three regions in central and northern Europe. Using a rarity index based…

kovakuoriaisetuhanalaiset lajitEcologyRarityColeoptera; Community functional structure; Ecosystem function; Extinction; Functional traits; RarityCommunity functional structureeliöyhteisötExtinctionbiodiversiteettiColeopterametsäekosysteemitfunktionaalisuusEcosystem functionEcology Evolution Behavior and SystematicsFunctional traitsNature and Landscape Conservation
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Style partycypacji kulturalnej człowieka dorosłego : walidacja narzędzia pomiarowego

2017

Artykuł przedstawia proces walidacji narzędzia pomiarowego, diagnozującego style partycypacji kulturalnej człowieka dorosłego. Jego celem jest opis uzyskanych wyników w poszczególnych etapach walidacji oraz określenie związku pomiędzy stylami partycypacji kulturalnej a układami kultury prezentowanymi przez socjologów kultury. W związku z czym przedmiotem badań jest styl partycypacji kulturalnej człowieka dorosłego. Badania pilotażowe, jak i właściwe zostały przeprowadzone w województwie opolskim, próba badawcza kolejno liczyła 100, a następnie 400 respondentów. Za podstawę teoretyczno-metodologiczną rozważań przyjęto konstrukt teoretyczny Kazimierza Obuchowskiego, opisujący podmiotowy oraz …

kulturasubjectivitycultural systemsukłady kulturystandards of functioning of an individualstandardy funkcjonowania jednostkipodmiotowośćcultural participationwalidacja narzędzia pomiarowegopartycypacja kulturalnavalidation of a measurement toolcultureRocznik Andragogiczny
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Visual acuity in relation to functional performance, falls and mortality in old age

2010

kuolleisuuskaatuminenagingvisual impairmentaccidentsfunctional capacitymortalitynäkömobilityagedikääntyminentoimintakykyfallsliikuntakykyikääntyneettapaturmat
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Calculation of magnetic coupling constants with hybrid density functionals

2013

The currently available computational methods for the calculation of magnetic coupling constants with density functional theory have been reviewed. These methods include modern approximations to the exchangecorrelation functional, such as hybrid, range-separated and double-hybrid functionals, as well as approaches to treat the severe spin symmetry problems encountered in density functional calculations of magnetic interactions. In addition to the commonly used unrestricted Kohn–Sham formalism, density functional methods based on multireference wave functions and ensemble densities are also discussed. Performance of these models based on various studies has been summarized. The results indic…

kytkentämagnetic couplingmagnetic coupling constantsDFThybrid functionals
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Dead wood and fungi : detection, diversity and conservation in boreal forests

2018

Dead wood and associated fungal communities are a crucial part of boreal forest ecosystems, and severely affected and threatened by human actions like commercial timber harvesting. Despite their importance for forest functioning, most wood-inhabiting fungal species, especially those producing small fruit bodies, are still ecologically and taxonomically poorly known. In addition, studies on dead wood profiles have neglected fine woody debris. This thesis includes detailed investigations of fruiting phenology of different morphological groups and complete dead wood profile of one semi-natural boreal forest. In addition, the diversity patterns of wood-inhabiting fungal communities according fo…

lajistokartoitusfruit bodymetsänkäsittelyforest managementeliöyhteisötsporepuulajitluonnon monimuotoisuuslahottajasienetbiodiversiteettihabitat qualitycommunityspecies richnessfunctional traitsienetlahopuutitiöt
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Requirements for using simulation to design and assess wireless ATM handover solutions

1999

Wireless ATM (WATM) has been widely considered as a solution for broadband wireless services. Handover is one of the most important mobility support functions in the WATM network. Many handover solutions have been proposed, analysed, and benchmarked. Simulations have been broadly used to assess these solutions. However, there are many dilemmas in how simulation has been applied as a research methodology: heterogeneous simulation systems used, lack of comparison with other related work, biased conclusions, and unavailability of simulation models and systems to researchers. The WATM research community lacks a standard and commonly acceptable methodology for applying simulation. To address thi…

land mobile radiowireless ATM handover solutionsasynchronous transfer modebroadband networksComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSWATMhandover simulation modelanalytical modelsdigital simulationsimulation modelsmobility support functionsheterogeneous simulation systemsbroadband wireless
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Acquisition of english as a second language by students with Asperger Syndrome: a theoretical approach

2015

Partimos de diferenciar entre el Síndrome de Asperger (SA) y el Autismo de alto funcionamiento (AAF) dentro de los Trastornos del Espectro Autista (TEA) considerando tres características principales: individuos con SA muestran un CI elevado, falta de retraso en la adquisición del lenguaje (AL) y una posible facilidad en la adquisición de segundas lenguas (ASL). Además, tratamos los factores y características –favorables y desfavorables- que los/as estudiantes con SA y su profesorado deben considerar al abordar la ASL del inglés. El estudio contribuye a ofrecer una perspectiva más amplia de las teorías contemporáneas sobre ASL y a proporcionar una base sólida para un futuro estudio de campo …

language acquisitionhigh-functioning autismIQasperger syndromeautism spectrum disordersecond language acquisitionUNESCO::LINGÜÍSTICA
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Līdzību pragmalingvistiskā analīze

2019

Bībeles stāsti, kurus Evaņģēlijā sauc par līdzību stāstiem vai parabolām ir biblisks žanrs, kas ir pētīts pēdējo desmitgāžu laikā. Šajā periodā šos stāstus sāka analizēt no tekstuālās, literārās, un vēsturiskās perspektīvas. Pētījumi atklāj, ka zinātniska pieeja ir nepieciešama, lai izprastu un izskaidrotu Bībeles stāstus. Darbā tiek izmantots novatoriska perspektīva un divu līmeņu parabolu nozīmju analīze. Semantiskās nozīmes analīzē tika pētīta teksta literārā nozīme, tā atklāja gan parabolu raksturīgās pazīmes, gan lingvistisko līdzekļu un stratēģiju izmantojumu burtiskās nozīmes izveidošanā. Pragmatiskās nozīmes analīzē uzmanība tika vērsta uz pārnesto un konteksta nozīmi. Pragmatiskās …

language functionsValodniecībaparablesemantic and pragmatic meaningmetaphorcontext
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Apstākļi un darbības vārdu formas T.Hārdija romānā "Kāsterbridžas mērs"

2020

Šis pētījums tika uzsākts, ņemot vērā T.Hārdija darbu popularitātes kritumu un secīgu pieaugumu pēdējās desmitgades laikā, kā arī darbības vārdu un apstākļu nozīmi daiļliteratūrā. Pētījuma mērķis bija analizēt, kā autors lieto darbības vārdu formas un apstākļus romānā Kāsterbridžas mērs, raksturojot varoņus un pildot valodas funkcijas. Tika izmantota jauktā pētījuma metode, apvienojot diskursa analīzi un kvantitatīvu pieeju stilistiskajai analīzei. Pētījuma rezultātā tika atklāts, ka ar darbības vārdu formu palīdzību autors nosaka sižeta attīstības straujumu; tie apstākļi, kas galvenokārt izmantoti ar komunikācijas darbības vārdiem, ļauj izdarīt secinājumus par romāna varoņu īpašībām; starp…

language functionsadverbial modifiersValodniecībastylistic analysisdiscourse analysisverb forms
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Direct detection of 17O NMR in [Gd(DOTA)]- by NMR Spectroscopy

2015

The 17O NMR spectrum of the non-coordinated carboxyl oxygen in the GdIII-DOTA (DOTA = tetraazacyclododecanetetraacetic acid) complex has been observed experimentally. Its line width is essentially unaffected by paramagnetic relaxation due to gadolinium, and is only affected by the quadrupole pathway. The results are supported by the relevant parameters (hyperfine and quadrupole coupling constants) calculated by relativistic DFT methods. This finding opens up new avenues for investigating the structure and reactivity of paramagnetic GdIII complexes used as contrast agents in magnetic resonance imaging.

lanthanide complexesLanthanideGadoliniumchemistry.chemical_elementImaging agentsCatalysisNMR spectroscopy; Density functional calculations; lanthanide complexes; gadolinium; O-17 nmrParamagnetismchemistry.chemical_compoundNMR spectroscopyNuclear magnetic resonanceLanthanidesDOTAHyperfine structureChemistryOrganic ChemistryRelaxation (NMR)General ChemistryNuclear magnetic resonance spectroscopyDensity functional calculationsSettore CHIM/03 - Chimica Generale E InorganicaQuadrupole17O NMR Lanthanides DFTCondensed Matter::Strongly Correlated ElectronsgadoliniumO-17 nmr
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