Search results for "dragon"
showing 10 items of 50 documents
Resolving Bio-Nano Interactions of E.coli Bacteria-Dragonfly Wing Interface with Helium Ion and 3D-Structured Illumination Microscopy to Understand B…
2020
Obtaining a comprehensive understanding of the bactericidal mechanisms of natural nanotextured surfaces is crucial for the development of fabricated nanotextured surfaces with efficient bactericidal activity. However, the scale, nature, and speed of bacteria-nanotextured surface interactions make the characterization of the interaction a challenging task. There are currently several different opinions regarding the possible mechanisms by which bacterial membrane damage occurs upon interacting with nanotextured surfaces. Advanced imaging methods could clarify this by enabling visualization of the interaction. Charged particle microscopes can achieve the required nanoscale resolution but are …
Why are wasps so intimidating: field experiments on hunting dragonflies (Odonata: Aeshna grandis)
2003
Abstract The mechanisms of aposematism (unprofitability of prey combined with a conspicuous signal) have mainly been studied with reference to vertebrate predators, especially birds. We investigated whether dragonflies, Aeshna grandis, avoid attacking wasps, Vespula norwegica, which are an unprofitable group of prey for most predators. As a control we used flies that were painted either black or with yellow and black stripes. The dragonflies showed greater aversion to wasps than to flies. Black-and-yellow-striped flies were avoided more than black ones, suggesting that aposematic coloration on a harmless fly provides a selective advantage against invertebrate predators. There was no signifi…
Risk of Local Extinction of Odonata Freshwater Habitat Generalists and Specialists
2014
Understanding the risk of a local extinction in a single population relative to the habitat requirements of a species is important in both theoretical and applied ecology. Local extinction risk depends on several factors, such as habitat requirements, range size of species, and habitat quality. We studied the local extinctions among 31 dragonfly and damselfly species from 1930 to 1975 and from 1995 to 2003 in Central Finland. We tested whether habitat specialists had a higher local extinction rate than generalist species. Approximately 30% of the local dragonfly and damselfly populations were extirpated during the 2 study periods. The size of the geographical range of the species was negati…
What Does it Mean to be Orlanthi? Hermeneutic Challenge in King of Dragon Pass
2016
The game King of Dragon Pass(A Sharp 1999) portrays what it is like to live as an Orlanthi, a member of the Storm Tribe. In order to successfully play the game, the player must understand the values that guide a tribe of Orlanthi in a hermeneutic process that requires the constant evaluation of the players’ prejudices of how people should live and be governed. This paper examines the hermeneutic process of interpretation the player goes through and shows how meaning works as a game mechanic in King of the Dragon Pass. peerReviewed
Divu lomu spēļu statistiska salīdzināšana
2020
Šis darbs apskata divas lomu spēles: Pathfinder 1st Edition, jeb 1E, un Dungeons & Dragons 5th Edition, jeb 5E. Specifiski, tika pētīts, cik atšķirīgi ir radījumi abu spēļu klāstā, lai nonāktu pie secinājuma - vai tie, un līdz ar to - arī spēles savā starpā, ir ar statistisku nozīmību atšķirīgiviens no otra, vai nē. Lai to izdarītu, tika ievākti dati no abām spēlēm - radījumu galvenie raksturlielumi un, kurnepieciešams, veikti papildus aprēķini, lai noskaidrotu to spējas un varētu tās salīdzināt abosgadījumos. Izmantotie matemātiskie salīdzināšanas rīki: T-tests, Vilkoksona tests, Kolmogorova-Smirnova tests,TOST tests; kā arī tika veiktas grafiskā analīze, kur tas bija pieļaujams: histogram…
Regional variations in occupancy frequency distributions patterns between odonate assemblages in Fennoscandia
2018
Odonate (damselfly and dragonfly) species richness and species occupancy frequency distributions (SOFD) were analysed in relation to geographical location in standing waters (lakes and ponds) in Fennoscandia, from southern Sweden to central Finland. In total, 46 dragonfly and damselfly species were recorded from 292 waterbodies. Species richness decreased to the north and increased with waterbody area in central Finland, but not in southern Finland or in Sweden. Species occupancy ranged from 1 up to 209 lakes and ponds. Over 50% of the species occurred in less than 10% of the waterbodies, although this proportion decreased to the north. In the southern lakes and ponds, none of the species o…
Dracocephalum ruyschiana L. (Odenpa, Igaunija)
1848
Ruiša pūķgaleve, atradne: Odenpa, Igaunijā. /// Northern Dragon-head, deposit Odenpa, Estonia. [Attēls no LU Muzeja kolekcijas Herbarium Latvicum (RIG II); (BOT1029_16)]
Perspectives on variation in species richness : area, energy and habitat heterogeneity
2011
Tiešsaistes spēles (ne)produktivitāte: gadījuma pētījums par radošumu
2022
Bakalaura pētījums “Tiešsaistes spēles (ne)produktivitāte: gadījuma pētījums par radošumu” fokusējās uz radošajiem procesiem, ko piedzīvo galda spēles Dungeons and Dragons spēlētāji veidojot virtuālās pasaules un veidiem kā radošums izpaužas, kad spēle ir situēta tiešsaistes vidē. Iesaistoties Dungeons and Dragons kopienā, izmantojot līdzdalīgu novērojumu, neformālas diskusijas un daļēji strukturētas intervijas, es pētu dažādus artefaktu veidošanās procesus un digitālo tehnoloģiju ietekmi uz mūsu socializāciju tiešsaistē. Radošums ir improvizēts un ir mūsu sociālās un kultūras dzīves neatņemama sastāvdaļa, kas veido gan mūs pašus, gan esošās struktūras.