Search results for "THM"
showing 7 items of 6997 documents
Sparsity-aware multiple relay selection in large multi-hop decode-and-forward relay networks
2016
In this paper, we propose and investigate two novel techniques to perform multiple relay selection in large multi-hop decode-and-forward relay networks. The two proposed techniques exploit sparse signal recovery theory to select multiple relays using the orthogonal matching pursuit algorithm and outperform state-of-the-art techniques in terms of outage probability and computation complexity. To reduce the amount of collected channel state information (CSI), we propose a limited-feedback scheme where only a limited number of relays feedback their CSI. Furthermore, a detailed performance-complexity tradeoff investigation is conducted for the different studied techniques and verified by Monte …
Modelling and analysing oriented fibrous structures
2014
Abstract. A mathematical model for fibrous structures using a direction dependent scaling law is presented. The orientation of fibrous nets (e.g. paper) is analysed with a method based on the curvelet transform. The curvelet-based orientation analysis has been tested successfully on real data from paper samples: the major directions of fibrefibre orientation can apparently be recovered. Similar results are achieved in tests on data simulated by the new model, allowing a comparison with ground truth. peerReviewed
Validation in Young Soccer Players of the Modified Version of the Harre Circuit Test: The Petrucci Ability Test
2021
The evaluation of soccer players’ physical fitness from youth onward is important for monitoring performance and planning training. While health-related factors present valid and reliable tests, the skill-related component should be studied in depth. An interesting test to evaluate the skill-related factors is the Harre circuit test (HTC); unfortunately, this test includes the somersault, an element not present in soccer. The aim of the present study is the validation of the Petrucci ability test (PAT), a variation of the HTC without the somersault for young soccer players. Children and adolescents (age range 10–13 years old) soccer players concluded the 20-m, the HTC and the PAT. To establ…
Ģenētiskais algoritms optimizācijas metodēs
2017
Bakalaura darbā tiek aprakstīts ģenētiskais algoritms, kas ir viens no optimizācijas metožu jaunākajiem un mazāk pazīstamajiem algoritmiem. Teorijas apskatā aplūkots ģenētiskā algoritma konstrukcijas elementi: derīguma (fitness) funkcijas izveide, reproducēšanās, krustošanās un mutāciju operatori. Praktiskajā pielietojumu daļā apskatīti vairāki piemēri (tanī skaitā ceļojošā pārdevēja problēma). Piemēru realizācija veikta ar paketi R .Sniegts neliels metožu salīdzinājums.
Atklāts, krustota dizaina ultra-ilgstošas darbības β2-agonista olodaterola un īsas darbības β2-agonista salbutamola bronhodilatējošas ietekmes ātruma…
2018
Astmai un hroniskai obstruktīvai plaušu slimībai (HOPS) ir liela socio-ekonomiska ietekme uz sabiedrīebu un tās ir vienas no galvenajiem saslimstības un mirstības cēloņiem pasaulē. Šo obstruktīvo plaušu slimību ārstēšana balstās uz β2-agonistu un citu zāļu bronhodilatatora iedarbību. Lai salīdzinātu ilgstošas-darbības β2-agonista olodaterola bronhodilatācijas efektu ar īslaicīgas-darbības β2-agonistu salbutamolu tika veikts atklāto pārbaužu eksperimentāls pētījums, kurā piedalījās 10 pacienti ar HOPS vai astmu, un tika noteikts abu zāļu bronhodilatācijas efekts, izmantojot FEV1 kā galveno parametru. Tika veikti ķermeņa plejismogrāfijas izmeklējumi, kuru laikā nolasīja sākumpunkta vērtību. 5…
On the Amount of Nonconstructivity in Learning Recursive Functions
2011
Nonconstructive proofs are a powerful mechanism in mathematics. Furthermore, nonconstructive computations by various types of machines and automata have been considered by e.g., Karp and Lipton [17] and Freivalds [11]. They allow to regard more complicated algorithms from the viewpoint of much more primitive computational devices. The amount of nonconstructivity is a quantitative characterization of the distance between types of computational devices with respect to solving a specific problem. In the present paper, the amount of nonconstructivity in learning of recursive functions is studied. Different learning types are compared with respect to the amount of nonconstructivity needed to lea…