Search results for "kani"
showing 10 items of 311 documents
Density-Functional Theory on Graphs
2021
The principles of density-functional theory are studied for finite lattice systems represented by graphs. Surprisingly, the fundamental Hohenberg–Kohn theorem is found void, in general, while many insights into the topological structure of the density-potential mapping can be won. We give precise conditions for a ground state to be uniquely v-representable and are able to prove that this property holds for almost all densities. A set of examples illustrates the theory and demonstrates the non-convexity of the pure-state constrained-search functional. peerReviewed
Phytoseiid mites from Basilicata region (Southern Italy): species diversity, redescription of Typhloseiulus arzakanicus Arutunjan and a dichotomic ke…
2017
A survey of phytoseiid mites was carried out in the Basilicata region (Southern Italy) between 1976 and 2014 on wild and cultivated plants. A total of 38 species belonging to eleven genera and two subgenera were found on 59 plant species. The most common species was Euseius finlandicus (Oudemans) (39%) followed by Typhlodromus (Typhlodromus) exhilaratus Ragusa (32.2%), Kampimodromus aberrans (Oudemans) (27.1%), Typhlodromus (Anthoseius) cryptus (Athias-Henriot) (23.7%). Typhloseiulus arzakanicus (Arutunjan), found for first time in Italy, is redescribed here, while the male of this species is described for the first time. A dichotomic key of the species belonging to the genus Typhloseiulus …
Jalan alle kohdistuvat paineet, lihasaktiivisuusmallit ja kinesmaattiset muuttujat kaksoisaxelin oppimisprosessin aikana
2002
Rinkinen, Siru Orvokki. Jalan alle kohdistuvat paineet, lihasaktiivisuusmallit ja kinemaattiset muuttujat kaksoisaxelin oppimisprosessin aikana. Liikuntabiologian laitos. Jyväskylän yliopisto. 2002, 85 s. Tutkimuksen tarkoituksena oli selvittää taitoluisteluhypyn, kaksoisaxelin, OppIInlSen aikana tapahtuvia muutoksia lihasaktiivisuusmalleissa, jalan alle kohdistuvissa paineissa ja kinemaattisissa muuttujissa sekä vertailla näitä muutoksia kaksoisaxelin mallisuorituksen muuttujiin. Koehenkilöinä oli neljä naisluistelijaa (ikä 15 - 18 v, pituus: 1,68 ± 0,06 m, massa: 56,0 ± 1,6 kg). Mallisuorituksen tehnyt luistelija oli 20-vuotias maajoukkuetason naisluistelija (1,63 m ja 53,1 kg). Koehenkil…
Contribution and effectiveness of ski and pole forces in selected roller skiing techniques on treadmill at moderate inclines
2023
BackgroundMost of the studies about the effects of incline on cross-country skiing are related to the metabolic efficiency. The effective skiing biomechanics has also been indicated to be among the key factors that may promote good performance. The aims of this study were to provide biomechanical characteristics and investigate the relative contribution and effectiveness of ski and pole forces in overcoming the total external resistance with double poling (DP) and Gear 3 (G3) techniques at varying moderate uphill inclines.Methods10 male cross-country skiers participated in this study. Custom-made force measurement bindings, pole force sensors, and an 8-camera Vicon system were used to colle…
On the mechanical stability and out-of-plane dynamics of a travelling panel submerged in axially flowing ideal fluid : a study into paper production …
2011
Momentum-space structure of surface states in a topological semimetal with a nexus point of Dirac lines
2016
Three-dimensional topological semimetals come in different variants, either containing Weyl points or Dirac lines. Here we describe a more complicated momentum-space topological defect where several separate Dirac lines connect with each other, forming a momentum-space equivalent of the real-space nexus considered before for helium-3. Close to the nexus the Dirac lines exhibit a transition from type I to type II lines. We consider a general model of stacked honeycomb lattices with the symmetry of Bernal (AB) stacked graphite and show that the structural mirror symmetries in such systems protect the presence of the Dirac lines, and also naturally lead to the formation of the nexus. By the bu…
Current Rectification in Junctions with Spin-Split Superconductors
2022
Spin-split superconductors exhibit an electron-hole asymmetric spin-resolved density of states, but the symmetry is restored upon averaging over spin. On the other hand, asymmetry appears again in tunneling junctions of spin-split superconductors with a spin-polarized barrier. As demonstrated recently in both theory and experiment, this fact leads to a particularly strong thermoelectric effect in superconductor-ferromagnet structures. In this work we show another important effect stemming from the electron-hole asymmetry: current rectification. We calculate the charge current in spin-polarized tunnel junctions of a normal metal and a spin-split superconductor with ac and dc voltage bias. In…
Running in highly cushioned shoes increases leg stiffness and amplifies impact loading
2018
AbstractRunning shoe cushioning has become a standard method for managing impact loading and consequent injuries due to running. However, despite decades of shoe technology developments and the fact that shoes have become increasingly cushioned, aimed to ease the impact on runners’ legs, running injuries have not decreased. To better understand the shoe cushioning paradox, we examined impact loading and the spring-like mechanics of running in a conventional control running shoe and a highly cushioned maximalist shoe at two training speeds, 10 and 14.5 km/h. We found that highly cushioned maximalist shoes alter spring-like running mechanics and amplify rather than attenuate impact loading. T…
Radioteātra poētika: Latvijas piemērs
2019
Pētījums „Radioteātra poētika: Latvijas piemērs” ir mēģinājums raksturot radioteātra rīcībā esošos specifiskos mākslinieciskās izteiksmes līdzekļus un to lietojumu Latvijas Radioteātra 21. gadsimta sākuma iestudējumos. Pētījumā tiek apskatīts radioteātra jēdziens un radioteātra poētiku formējošie faktori, kā arī analizēts to lietojums 10 Latvijas Radioteātra iestudējumos: “Kauja pie Knipskas” (režisors Harijs Gerhards, 1999), “Viena nakts jauna vīrieša dzīvē” (režisores Irēna Cērmane un Diāna Bērza, 2002), “Svētais Grāls” (režisors Tamurs Tohvers, 2003), “Eh!” (režisore Irēna Cērmane, 2004), “Privāta reportāža” (režisors Lauris Gundars), “Melnais meža strazds” (režisore Diāna Bērza, 2005), …
Defense against predators incurs high reproductive costs for the aposematic moth Arctia plantaginis
2020
Abstract To understand how variation in warning displays evolves and is maintained, we need to understand not only how perceivers of these traits select color and toxicity but also the sources of the genetic and phenotypic variation exposed to selection by them. We studied these aspects in the wood tiger moth Arctia plantaginis, which has two locally co-occurring male color morphs in Europe: yellow and white. When threatened, both morphs produce defensive secretions from their abdomen and from thoracic glands. Abdominal fluid has shown to be more important against invertebrate predators than avian predators, and the defensive secretion of the yellow morph is more effective against ants. Her…