Search results for " Motor"
showing 10 items of 1044 documents
Analisi quantitativa del tessuto tendineo di ratto adulto allenato
2011
Jumper's Knee
2005
Mathematical models and stability analysis of induction motors under sudden changes of load
2013
Avaluació de l’efectivitat d’un programa d’intervenció basat en marxa virtual i exercici terapèutic en la funció motora, el to i el dolor de persones…
2023
Estudis previs han mostrat el potencial de les teràpies basades en l’activació del sistema de neurones mirall, concretament les teràpies de marxa virtual (MV) en persones amb afectació del sistema nerviós central (SNC). Malgrat això, aquestes teràpies no han estat estudiades com a potenciador de l’exercici terapèutic (ET) utilitzat com a rehabilitació usual sobre persones amb LM incompleta. La hipòtesi principal de la present tesi és que l’aplicació de la teràpia de MV combinada amb un programa d’ET produeix la millora de la funcionalitat, la disminució del dolor neuropàtic i la millora del to muscular en persones amb LM incompleta. Per tal de validar aquesta hipòtesi, l'objectiu de l’estud…
Trīs gadus vecu bērnu runas attīstība pirkstu rotaļās
2021
Bakalaura darba tēma: Trīs gadus vecu bērnu runas attīstība pirkstu rotaļās. Viena no aktuālākajām problēmām mūsdienās ir pieaugušā iniciatīvas trūkums saskarsmē ar bērnu. Bērns nesaņem pietiekami daudz uzmanības no pieaugušā. Pieaugušais ikdienas gaitās izvirza citas prioritātes, bieži vien bērnu atstājot novārtā. Tā rezultātā tiek kavēta bērna vispārīgā (tajā skaitā runas) attīstība. Šī problēma var radīt negatīvu iespaidu uz turpmāko socializācijas procesu. Bakalaura darba mērķis ir izpētīt pirkstu rotaļu ietekmi uz trīs gadu vecu bērnu runas attīstību. Bakalaura darba apjoms: Bakalaura darba pirmajā daļā tika veikts teorētisks apraksts par agrīnā vecuma vispārīgo raksturojumu veselumā, …
Perimenopausal women show modulation of excitatory and inhibitory neuromuscular mechanisms.
2021
Background Menopausal transition exposes women to an early decline in muscle force and motor function. Changes in muscle quality and function, especially in lower limbs, are crucial, as they expose individuals to increased risk of falls. To elucidate some of the related neuromuscular mechanisms, we investigated cortical inhibition and peripheral muscle twitch force potentiation in women during the early and late stages of perimenopause. Methods Participants were 63 women aged 48–55 years categorized as early (EP, n = 25) or late (LP, n = 38) perimenopausal according to serum follicle-stimulating hormone (FSH) levels and menstrual diaries. EP women had an irregular menstrual cycle and FSH 2…
Face and Content Validity of the Pictorial Scale of Perceived Water Competence in Young Children
2022
An international group of experts have developed a pictorial tool to measure perceived water competence for children aged from 5 to 8 years old: the Pictorial Scale of Perceived Water Competence (PSPWC). The aim of the present study was to verify the validity of this tool. In the first part of the study, 120 children were interviewed to investigate face validity of the PSPWC to ensure that all pictorial items were understandable. In the second part of the study, 13 scientific and/or pedagogical international experts were invited to assess the tool’s content validity via an online survey. Face validity results revealed that children were able to understand and sequence correctly the aq…
Damping Provision by Different Virtual Synchronous Machine Schemes
2020
The adoption of virtual synchronous machine (VSM) schemes for the control of power converters is gaining more and more attention both in academia and industry. The VSM control strategies fall into the category of grid-forming converter controls, and they are intended for a range of different applications, providing specific services and different kinds of support to the grid. The paper investigates the possibility of damping provision to the system by VSM power converters. Different schemes are considered and compared, showing the opportunity of the investigated solutions through combined modal and time domain analyses. A specific modification of the power synchronization loop is recognized…
Sensitivity Analysis and Frequency Dynamics of Grid-Connected Converters with Virtual Inertia
2021
For the participation in the frequency control of the system, power converters can be controlled with different strategies and methods, sharing the common concept of virtual inertia capability. In this work, a sensitivity analysis of two main categories of converter controls with virtual inertia is presented. The considered schemes are a grid-following current vector control with additional virtual inertia block and a grid-forming control scheme based on virtual synchronous machine concept. A proper basis for the comparison is first assessed providing an analytical correlation between the control parameters of the two schemes. For the two control strategies, the sensitivity analysis of the …