Search results for "wind"
showing 10 items of 846 documents
ENERGY FOR ROMANIA FROM RENEWABLE RESOURCES
2012
The European Union admits the fact that energy is essential, for the development of the European economy, but that it also constitutes a challenge, due to the impact on climate change. In Romania, as well as in all the countries of the European Union, which have chosen to promote renewable energy, governments have come up with support frameworks for investors in this field. In Romania’s case, the option for green schemes and compulsory quotas was selected, meaning that each energy producer, which produces renewable energy, receives a number of green certificates for each MW produced, depending on the technology it uses. The price of such a green certificate varies between 27 – 55 Euros. The…
An EU strategy to harness the potential of offshore renewable energy for a climate neutral future
2023
This document summarizes the key aspects of the EU Commission's strategy to harness the potential of offshore renewable energy.
Impact of Wind Electricity Forecasts on Bidding Strategies
2017
The change in the generation mix from conventional electricity sources to renewables has important implications for bidding behaviour and may have an impact on prices. The main goal of this work is to discover the role played by expected wind production, together with other relevant factors, in explaining the day-ahead market price through a data panel model. The Spanish market, given the huge increase in wind generation observed in the last decade, has been chosen for this study as a paradigmatic example. The results obtained suggest that wind power forecasts are a new key determinant for supply market participants when bidding in the day-ahead market. We also provide a conservative quanti…
IT infrastruktūras modernizācija mazā uzņēmumā
2018
Kvalifikācijas darba mērķis ir pilnveidot un modernizēt jau esošu informācijas tehnoloģijas infrastruktūru, kas ietver aparatūru, programmatūru, tīkla resursus un pakalpojumus, lai nodrošinātu pilnvērtīgu uzņēmuma IT vides darbību un pārvaldību. Darba teorētiskajā daļā veikta esošā uzņēmuma datortīkla izpētē, lai izprastu esošās problēmas un spētu definēt piemērotākus risinājumus darba plānošanas gaitā. Rezultātā ir veikta daļēja infrastruktūras iekārtu nomaiņa un konfigurēšana, kā arī ieviesta jauna lietojumprogrammatūra un servisi uzņēmuma darbības procesu modernizācijai.
Porte e finestre
2019
the contribution identifies and analyzes the success and operational repercussions in Sicilian architecture of the seventeenth and eighteenth centuries, of the models for doors and windows disseminated through the press. Some engravings have arrived in loose sheets, such as those attributed to the painter from Viterbo Tarquinio Ligustri. The success in Val di Noto of this almost unknown repertoire continued until the early eighteenth century, but it followed and developed at the same time as that of the models contained in the books by Sebastiano Serlio, Domenico Fontana and Vignola. Alongside the classic treatises of the sixteenth century and of the seventeenth century, the printing of eng…
Transient stability simulation of a fixed speed wind turbine by Matlab/Simulink
2007
This paper describes the dynamic behavior of a typical fixed speed wind turbine connected to the grid; the model is developed in the simulation tool Matlab/Simulink and created as a modular structure. The pitch control system is used for stabilization of the wind turbine at grid faults. In this way, voltage stability of the system with grid-connected wind turbines can be improved by using blade-angle control for a temporary reduction of the wind turbine power during a short-circuit fault in the grid. This paper shows a new variable control for maintaining of voltage stability, when a three-phase fault is applied close to the wind turbine and cleared by disconnecting the affected line. In th…
SUSPENDED TERRITORIES AND WINDOWS OF OPPORTUNITIES AFTER CENTRAL ITALY EARTHQUAKE OF 2016
2019
Nowadays cities are experiencing an unprecedented rate of growth, most of peripheral rural regions are facing shrinking phenomena. While globalization promotes strong economic concentrations in a few urban centers, peripherical regions are negatively affected by decreasing population and impending impoverishment, due to the lack of policy and the failure to develop and maintain rural economies. Although natural disasters accelerate these trends, the shock created by these unexpected events may generate a “window of opportunity”, linked both to risk-reduction processes and to transition paths towards more desirable futures. Earthquakes, more than other natural disasters, destabilize local sy…
Calculate Pulse from Touch Error Free PPG Signal with 2ndOrder Butterworth Filter
2021
With the ongoing heart problems of the population worldwide, the medical requirements of the people are expected to increase. Electrocardiogram (ECG) is one of the proven to capture the heart response signal to assess the electrical and muscular functions of the heart. The ECG setup is expensive and needs proper training, and of course, it is not instant. For fast, accurate heart parameter monitoring, scientists pay attention to the photoplethysmogram signal (PPG), based on the light intensity of a particular wavelength. Android smartphone with a good quality camera has come to ordinary people's reach and has become one of the most necessary and rugged devices for today and future generatio…
Synergistic and Redundant Brain-Heart Information in Patients with Focal Epilepsy
2020
In this work, partial information decomposition (PID) was applied to the time series of heart rate and EEG amplitude variability to investigate the dynamical interactions in brain-heart coupling before and after epileptic seizures. From ECG and EEG signals collected on 23 children suffering from focal epilepsy, the RR intervals and the EEG variance at ipsilateral and contralateral temporal electrodes were computed in four different time windows before and after the seizures. Static PID was used to obtain redundant, unique and synergistic components of the total information shared between the series of RR and EEG variance. Results highlight, in the progression from preictal to postictal stat…
Analysis of miRNAs in endometrial fluid as a tool for non-invasive diagnosis of endometrial receptivity
2017
La implantación embrionaria es el proceso por el que el embrión humano en fase de blastocisto se adhiere al útero materno para comenzar la gestación. El endometrio, la mucosa uterina solo puede aceptar al embrión en un momento determinado del ciclo menstrual que puede variar entre 12 horas y 2 días, identificado como "ventana de implantación". Desde siempre se ha buscado la forma de identificar de forma fiable dicha ventana utilizando técnicas histológicas, como los criterios de Noyes, a través de la observación morfológica vía ecográfica, o estudiando los cambios en los perfiles transcriptómicos, proteómicos o metabolómicos. No obstante, en reproducción asistida, se está abriendo el camino…