Search results for "IFT"
showing 10 items of 2193 documents
Optimization of BESS Capacity Under a Peak Load Shaving Strategy
2018
Battery energy storage systems (BESSs) are becoming increasingly competitive in the global energy landscape, thanks to the strong cost reduction that has taken place in recent years and it is expected to continue in the next future. Among the many benefits BESSs can provide, time shifting can be exploited by electricity consumers to save on the electricity bill, charging the storage during the off-peak hours and discharging when the cost of electricity is high. This paper describes a simple procedure to optimize the BESS capacity under a peak load shaving strategy, in presence of a time-of-use (TOU) electricity rate, able to guarantee, at the same time, the flattest daily power diagram and …
Hidden Oscillations In The Closed-Loop Aircraft-Pilot System And Their Prevention
2016
The paper is devoted to studying and prevention of a special kind of oscillations-the Pilot Involved Oscillations (PIOs) which may appear in man-machine closed-loop dynamical systems. The PIO of categories II and III are defined as essentially non-linear unintended steady fluctuations of the piloted aircraft, generated due to pilot efforts to control the aircraft with a high precision. The main non-linear factor leading to the PIO is, generally, rate limitations of the aircraft control surfaces, resulting in a delay in the response of the aircraft to pilot commands. In many cases, these oscillations indicate presence of hidden, rather than self-excited attractors in the aircraft-pilot state…
DESIGN AND DEVELOPMENT OF A PILOT PLANT FOR MICROALGAE CULTIVATION AND POST- TREATMENT IN SUPERCRITICAL WATER
The effect of inbreeding rate on fitness, inbreeding depression and heterosis over a range of inbreeding coefficients
2014
Understanding the effects of inbreeding and genetic drift within populations and hybridization between genetically differentiated populations is important for many basic and applied questions in ecology and evolutionary biology. The magnitudes and even the directions of these effects can be influenced by various factors, especially by the current and historical population size (i.e. inbreeding rate). Using Drosophila littoralis as a model species, we studied the effect of inbreeding rate over a range of inbreeding levels on (i) mean fitness of a population (relative to that of an outbred control population), (ii) within‐population inbreeding depression (reduction in fitness of offspring fro…
Model of line to shield power line communication system on a Medium Voltage network
2010
In this paper a complete model of a power line communication (PLC) system on a Medium Voltage (MV) network is presented in the case of a line-ground configuration. A simple and friendly Simulink (R) software is used to develop the model. A distributed parameter MV cable model in line-ground configuration is considered together with the power transformers, the signal coupling networks and the receiving and transmitting line coupling interface of a ST7540 FSK powerline transceiver. The performances of the complete PLC communication system are evaluated for different line lengths by means of the attenuation computed as ratio between the received and transmitted voltage signals.
A Lia, in forma di parola
2013
presentazione di "Xenia. Studi in onore di Lia Marino", volume Festschrift.
Profilaktiskie pasākumi ģimenes ārsta praksē
2020
Veselības profilaktiskajiem pasākumiem ir ļoti liela nozīme sabiedrības veselības saglabāšanā. Ikvienam sabiedrības loceklim ir brīva izvēle veikt vai neveikt šos profilaktiskos pasākumus, bet katrs no mums ir atbildīgs par sava tuvākā cilvēka veselību. Bakalaura darba tēmas mērķis ir noskaidrot pacienu sadarbību profilaktisko pasākumu veikšanā. Autora izvirzītā hipotēze: sievietes no 50 līdz 75 gadiem vairāk sadarbojas profilaktisko pasākumu veikšanā kā vīrieši no 50 līdz 75 gadiem. Bkalaura darbā tik ietverta gan teorētiskā gan praktiskā daļa. Pētijumā tiek analizēta Nolas Penderes māszinību teorija, jēdzieni – profilaktiskie pasākumi, sadarbība, kā arī teorijas analīze saitībā ar izvēlēa…
Latviešu valodas sintaktiskā analizatora "Čankeris" modernizācija
2015
Darbā tiek apskatīts Latvjas Universitātes Mākslīgā Intelekta laboratorijā izstrādāts latviešu valodas sintaktiskais analizators ‘Čankeris”. Analizatoram nepieciešama modernizācija, lai mazinātu analīžu daudznozīmību. Tiek veikta programmas divu algoritmiski atšķirīgu versiju salīdzināšana, lai izvēlētos tālākai modernizācijai piemērotāko. Tiek atrasts veids kā izvēlētajā programmā iekļaut mašīnmācīšanās metodes. Pēc programmas uzlabošanas tiek veikti testi un rezultātu analīze.
Do the Mega and Titan Tests Yield Accurate Results? An Investigation into Two Experimental Intelligence Tests
2020
The Mega and Titan Tests were designed by Ronald K. Hoeflin to make fine distinctions in the intellectual stratosphere. The Mega Test purported to measure above-average adult IQ up to and including scores with a rarity of one in a million of the general population. The Titan Test was billed as being even more difficult than the Mega Test. In this article, these claims are subjected to scrutiny. Both tests are renormed using the normal curve of distribution. It is found that the Mega Test has a higher ceiling and a lower floor than the Titan Test. While the Mega Test may thus seem preferable as a psychometric instrument, it is somewhat marred by a number of easy items in its verbal section. …
Gradual Changes to Discipline : A Case Study of Punishment Records and Corporal Punishment in Three Schools in Finland After the 1872 School Order Act
2018
Punishment and violence in the history of education have been covered in numerous scholarly works, but most of them have relied heavily on what might be considered normative sources such as regulations, legislation, other studies in the history of education, various instructions, manuals, and guidebooks. The history of education in Finland, as elsewhere, would have us believe that punishment practices in general changed drastically, and that corporal punishment in particular had been dropped by the late nineteenth and early twentieth centuries, as proscribed in secondary schools by the School Order Act of 1872. We argue, however, that this was not always the case, especially when certain em…