showing 36 of ~574560 from 574555 documents
Energy Management System in Grid-Connected Small Scale AC/DC Microgrids Including Renewable Sources and Flexible Loads
2022
The growth of small scale microgrids with diverse distributed generations has drawn attention to their effective energy management. In this paper, for various energy scenarios, an energy management system is adopted to minimize the energy purchased by a hybrid AC/DC microgrid from the upstream grid due to high peak-hour energy prices and maximise generation from renewable sources, while adjusting the most optimal charge/discharge control strategies for flexible loads such as electric vehicles and storage systems, and the supply of non-controllable loads. In addition, peak shaving is simultaneously implemented in this proposed model without considering minimum power deviation as an objective…
Power production forecast for distributed wind energy systems using support vector regression
2022
Due to the inherent intermittency in wind power production, reliable short-term wind power production forecasting has become essential for the efficient grid and market integration of wind energy. The current wind power production forecasting schemes are predominantly developed for wind farms. With the rapid growth in the microgrid sector and the increasing number of wind turbines integrated with these local grids, power production forecasting schemes are becoming essential for distributed wind energy systems as well. This paper proposes a power production forecasting scheme developed explicitly for distributed wind energy projects. The proposed system integrates two submodels based on supp…
A "best practice" for inclusive art cities: the case study of the I-Access project
2022
The essay aims to illustrate the results of the I-Access Interreg Italia Malta 2016-20 project, conducted by a partnership led by the Department of Architecture, University of Palermo, with the scientific coordination of Renata Prescia. The project involved the Vucciria district in Palermo and the Bijcceria district in Valletta. Within the range of products that have been created (including database, web platform, mobile apps, protocol), in this essay we want to illustrate the actions implemented to facilitate both physical and cultural accessibility, from the integrated points of view between restoration and exhibition design. They are actions for overcoming of architectural barriers, cult…
PROTACs: The Future of Leukemia Therapeutics
2022
The fight to find effective, long-lasting treatments for cancer has led many researchers to consider protein degrading entities. Recent developments in PROteolysis TArgeting Chimeras (PROTACs) have signified their potential as possible cancer therapies. PROTACs are small molecule, protein degraders that function by hijacking the built-in Ubiquitin-Proteasome pathway. This review mainly focuses on the general design and functioning of PROTACs as well as current advancements in the development of PROTACs as anticancer therapies. Particular emphasis is given to PROTACs designed against various types of Leukemia/Blood malignancies.
Methods to Predict Energy Use for Lighting Systems: An Overview and an Application on a Real Case Study
2022
The study of Demand Response strategies application is widely related to the evaluation of the energy consumption. It is fundamental to optimize the design and management of the plants in the smart buildings. During the design steps, it is necessary to predict the above-mentioned energy consumption. This paper reviews some methods that can be applied to predict energy consumption related to lighting systems. In particular, three categories of methods have been analysed: methods proposed by technical standards, methods based on mathematical indices for daylight assessment, and methods based on simulation models. These methods have been described and applied by calculating the energy consumpt…
DC Grids for Supporting AC Power System during Failure Events: Experimental Testing of a Urban Case Study
2022
AC power systems and their devices can be subjected to different failure events due to thermal, environmental, and aging phenomena. In this context, DC grids intervention could mitigate customers black-out by adequately controlling their internal resources (renewable generators and storage systems). In this paper, failure events concerning HV/MV transformer are considered. Possible actions to support the AC grid to avoid interruption in load areas are analyzed and experimentally validated. Tests campaigns are carried out taking advantage of a research nanogrid infrastructure available at ENEA Centre of Portici. It consists of indoor equipment able to emulate actual generation, load and stor…
Life Cycle Assessment of Flow-Redox Cells: A Case Study
2022
European Union identified the battery value chain as strategic for achieving a sustainable and decarbonized economy. Focusing on the environmental sustainability of batteries, this paper presents an application of the Life Cycle Assessment methodology to three flow-redox cells characterized by electrodes made by different materials. The results are referred to one kWh of energy supplied by the cell during its useful life and are calculated following a “from cradle to grave” approach. Negligible differences (lower than 1.5%) are observed in the energy and environmental impacts of the three types of cells, mainly due to the type of electrode and the use phase. A dominance analysis shows that …
Legislative drafting and gender: some linguistic insights into English and Italian
2022
Languages vary widely in terms of gender systems showing differences in the number of classes, underlying assignment rules and how and where gender is marked. The legislative drafting policy conventionally known as the ‘masculine rule’, whereby ‘he includes she’, raised opposition in the 1970s (under the pressure of feminist movements in the United States and Europe), and the adoption of plain English style forced legislative drafters to basically avoid sentences of undue length, superfluous definitions, repeated words and gender specificity with the aim of achieving clarity, minimising ambiguity, and enhance gender-neutrality. Given the prevalence of English as lingua franca, an increasing…
Analysys and optimization of an end double-lap bonded joint for GFRP composite sandwich panels
2022
Although the best configuration of the joints used to connect a common GFRP sandwich panel with the main structures is the adhesively bonded one, that permit high static and fatigue performances as well as to avoid stress concentrations, mechanical or hybrid joints are still widely used in the industrial field. After a preliminary theoretical design, the optimal configuration of an end adhesively bonded double-lap joint constituted by a simple insert as internal adherent and the same face sheets as external adherent, has been researched. In detail, several experimental tests and successive numerical simulations under tensile and bending loading, performed by varying the main influence para…
Leisure-time physical activity from adolescence to late middle age and its associations with the COVID-19 pandemic : A 45-year follow-up
2022
We aimed to investigate the association of self-reported leisure-time physical activity (LTPA) over a 45-years from adolescence to late middle age mediated by LTPA in early middle age. We also explored whether LTPA in adolescence and early middle age was associated with change in LTPA during the COVID-19 pandemic. We constructed a path model employing questionnaire data from three LTPA measurements (1976, 2001, 2021) including duplicated assessment for pre- and during COVID-19 in 2021. The direct and indirect associations between LTPA in adolescence, early middle and late middle age were investigated, as well as the impact of previous LTPA on change in late middle age LTPA due to the pandem…
Leadership Effectiveness in Healthcare Settings: A Systematic Review and Meta-Analysis of Cross-Sectional and Before-After Studies
2022
To work efficiently in healthcare organizations and optimize resources, team members should agree with their leader’s decisions critically. However, nowadays, little evidence is available in the literature. This systematic review and meta-analysis has assessed the effectiveness of leadership interventions in improving healthcare outcomes such as performance and guidelines adherence. Overall, the search strategies retrieved 3,155 records, and 21 of them were included in the meta-analysis. Two databases were used for manuscript research: PubMed and Scopus. On 16th December 2019 the researchers searched for articles published in the English language from 2015 to 2019. Considering the study des…
Understanding Blood versus Blond Orange Consumption: A Cross-Cultural Study in Four Countries
2022
Understanding consumer perceptions and attitudes to specific fruit is key information for not only increasing fruit consumption, but also for marketing reasons. It may also give clues to breeders to set quality objectives. This study explores different aspects that help to explain blood vs. blond orange consumption: availability and consumption habit, satisfaction attributes, facilitators and consumption barriers, consumption contexts, expectations and purchase intention. The study was conducted in China, Mexico, Spain and Italy, where citrus fruit consumers were invited to respond an online questionnaire. Our results revealed Italy as the country with the highest availability and consumpti…
L2 English vocabulary breadth and knowledge of derivational morphology : One or two constructs?
2022
Derivational morphology (DM) and how it can be assessed have been investigated relatively rarely in language learning and testing research. The goal of this study is to add to the understanding of the nature of DM knowledge, exploring whether and how it is separable from vocabulary breadth. Eight L2 (second or foreign language) English DM knowledge measures and three measures of the size of the English vocabulary were administered to 120 learners. We conducted two confirmatory factor analyses, one with one underlying factor and the other treating vocabulary breadth and DM as separate. As neither model had a satisfactory fit without introducing a residual covariance to the two-factor model,…
Engagement in Emergency Remote Education
2022
Digital storytelling (DST) has been effective for student engagement in second language (L2) education. Yet, its impact on engagement has commonly been examined in the classroom through synchronous DST tools and platforms. This study enquires whether DST can be equally engaging in the context of emergency remote education caused by the COVID-19 pandemic. The participants of the study are 42 student-teachers of English who developed an asynchronous online DST project. Data were collected through a DST questionnaire and were analysed using quantitative and qualitative data analysis methods. DST was found to generate mainly cognitive engagement through self-reflection processes and behavioural…
Challenges for the Goal of 100% Renewable Energy Sources to Fit the Green Transition
2022
The increasing penetration of Renewable Energy (RE) into the electrical market is desirable in terms of sustainability. Nevertheless, it is a challenge that all the interested actors shall address from both the technical and economical points of view. This paper provides an overview of the main challenges and solutions towards the technological transition to an electrical system with 100% renewable energy sources in terms of innovations and operative limits of the traditional systems. These innovative paradigms will also address the social impact and government policies.
Foster Carbon-Neutrality in the Built Environment: A Blockchain-Based Approach for the Energy Interaction Among Buildings
2022
Decarbonizing urban environments and reducing their energy consumption is one of modern society biggest commitments. In this regard, both the scientific community and international governments have been giving special consideration on improving the energy-environmental performance of mostly single buildings; recently the focus has been shifting towards a broader Positive Energy District (PED)/ Energy Community (EC) vision, from small clustered group of buildings to neighborhoods up until urban settlements. In this respect, integrating the use of renewable energy resources (RES) and actively involving building users can have a significant environmental impact on local areas. Within this fram…
Potential for a precision measurement of solar pp neutrinos in the Serappis experiment
2022
The European physical journal / C 82(9), 779 (2022). doi:10.1140/epjc/s10052-022-10725-y
Comparing the Impact of Electric Vehicles on Urban and Insular Networks
2022
Transport sector is moving towards clean and green transportation with the growing market of electric vehicles globally. Electric vehicles are independent fossil fuels consumption, but the massive adoption of electric vehicles soon can lead to a significant burden on the power distribution networks. In this paper, a study on the potential impact of electric vehicles on the power distribution networks of two different regions with totally different realities of population density, an average number of cars per inhabitant, and travel habits has been carried out. The first region is the island of Favignana having an insular power distribution network, while the other region, the city of Palerm…
A Remuneration Model of Energy Community Members in Italy
2022
The Directive (EU) 2018/2001 (RED II) requires Member States to authorize the constitution of consumers as self-consumers of renewable electricity by ensuring them non-discriminatory and disproportionate treatment. Member States must establish a favorable framework for promoting and facilitating the development of self-consumption, including in collective form (art. 21). According to the Directive, the granting of rights to renewable energy self-consumers who act collectively allows to increase the energy efficiency of households and helps to combat energy poverty by reducing consumption and supply tariffs. In Italy, the decree n. 162/2019 and then amended with Decree 199/2021 has partially…
Computational Study on the Co-Mediated Intramolecular Pauson–Khand Reaction of Fluorinated and Chiral N-Tethered 1,7-Enynes
2022
The Co2(CO)8-mediated intramolecular Pauson−Khand reaction is an elegant approach to obtain cyclopentenone derivatives containing asymmetric centers. In this work, we employed density functional theory calculations at the M11/6-311+G(d,p) level of theory to investigate the mechanism and reactivity for the Pauson−Khand reaction of fluorinated and asymmetric N-tethered 1,7-enynes. The rate determining step was found to be the intramolecular alkene insertion into the carbon−cobalt bond. The stereoselectivity of the alkene insertion step was rationalized by the different transition states showing the coordination of the alkene through the Re- and Si-face. The effects of different fluorine group…
GPU-accelerated time integration of Gross-Pitaevskii equation with discrete exterior calculus
2022
The quantized vortices in superfluids are modeled by the Gross-Pitaevskii equation whose numerical time integration is instrumental in the physics studies of such systems. In this paper, we present a reliable numerical method and its efficient GPU-accelerated implementation for the time integration of the three-dimensional Gross-Pitaevskii equation. The method is based on discrete exterior calculus which allows us the usage of more versatile spatial discretization than traditional finite difference and spectral methods are applicable to. We discretize the problem using six different natural crystal structures and observe the correct choices of spatial tiling to decrease the truncation error…
Quand Philippe Vilain raconte la vengeance d’une femme (La Malédiction de la Madone)
2022
Recensione al romanzo di Philippe Vilain, "La Malédiction de la Madone" Review of Philippe Vilain's novel "La Malédiction de la Madone" Compte-rendu du romand de Philippe Vilain, "La Malédiction de la Madone"
Effects of gender inequality and wealth inequality on within-sex mating competition under hypergyny
2022
Documentation of code used for MS: "Effects of gender inequality and wealth inequality on within-sex mating competition under hypergyny", published in Evolution and Human Behavior. https://doi.org/10.1016/j.evolhumbehav.2022.08.006 1. Overview The code provided is Matlab code. The function 'iteratedmatching.m' contains the main code for the simulation. When contained in the same folder (along with its sub-functions 'pickcandidates.m' and 'vectperm.m'), this code can be called from the scripts Figure_1.m, Figure_2.m etc. to produce the figures. 2. File list __________ Title: Main code File name: iteratedmatching.m Description: Main code for running simulations of iterative partner matching T…
Pan- Islamism and Pan- Arabism. Debating Possible Convergences in Responses to Modernity
2022
Pan- Islamism and Pan- Arabism are among the majors’ responses to modernity produced between the nineteenth and twentieth centuries in the Arabic- Islamic world, promoting a possible alternative to the Western proposals. This article aims to contribute to the effort of framing and analyzing the debate on the birth and evolution of both “theories”, with specific regard to the case of Egypt. In this sense, this article is in line with Gerges’s proposal (as expressed in his last book Making the Arab World) of “ideational fluidity” and tries to contribute to breaking down the established and misleading dichotomy of two monolithic ideologies (Pan- Islamism and Pan- Arabism) having no interaction…
Procedure for Safety Assessment and BIM Modelling of an Historical Complex Structure through a Macroelement Approach: The Building “Molino-Pastificio…
2022
The structural assessment of existing historical structures is a complex task due to the inner main difficulty in making up reliable models for structural analysis, able to include mechanical and geometrical nonlinearities, existing damage, complex configurations and arrangements of materials. This task becomes more difficult in mixed RC-masonry structures, which structural modelling can be particularly tough due to the different connections and interactions between structural members and materials. This paper presents the case study of a multi-storey mixed Reinforced Concrete (RC)- masonry historical structure, namely the former mill “Molino-Pastificio Soresi” building, located in Partinic…
Botāniskā dārza sekcijas “Augu daudzveidības pētījumi ex situ” un “Augu selekcija un introdukcija” tēžu krājums
2022
Latvijas Universitātes 80. starptautiskās zinātniskās konferences Botāniskā dārza sekcijas “Augu daudzveidības pētījumi ex situ” un “Augu selekcija un introdukcija” referāti tika nolasīti 2022. gada 1. februārī plkst. 13:00 tiešsaistē.
Modeling and Verification of Symbolic Distributed Applications Through an Intelligent Monitoring Agent
2022
Wireless Sensor Networks (WSNs) represent a key component in emerging distributed computing paradigms such as IoT, Ambient Intelligence, and Smart Cities. In these contexts, the difficulty of testing, verifying, and monitoring applications in their intended scenarios ranges from challenging to impractical. Current simulators can only be used to investigate correctness at source code level and with limited accuracy. This paper proposes a system and a methodology to model and verify symbolic distributed applications running on WSNs. The approach allows to complement the distributed application code at a high level of abstraction in order to test and reprogram it, directly, on deployed network…
On the international co-movement of natural interest rates
2022
Using quarterly data for 10 OECD countries and the Euro area and a Kalman filtering technique, we investigate the international co-movement among natural interest rates. We show that the US is the main source of global spillovers and global/common factors appear to be key drivers of such co-movement. Indeed, global liquidity is a net transmitter of shocks, while quantitative easing (QE) and the US Dollar are net recipients of shocks. We also find that total spillovers among natural interest rates have been rising since the late nineties, spiking at around economic re-cessions, periods of US monetary policy tightening, the global financial crisis and the Eurozone sovereign debt crisis. From …
EMI Worsening in a SMPS with Non-linear Inductor
2022
This paper is focused on the input current in a Switched Mode Power Supply (SMPS) in which the power inductor is exploited up to the saturation showing a non-linear behaviour. The input current exhibits a distortion due to the non-linearity. The electromagnetic interference (EMI) caused by the ripple at switching frequency, superimposed to the DC value of the input current, requires a suitable design of the input differential mode (DM) filter. The input current is analyzed both in the time and frequency domain for different operating conditions, and it is compared to a SMPS equipped with a traditional linear inductor.
Il sistema dualistico
2022
Il sistema dualistico introdotto in Italia dal D.Lgs. 17/01/2003, n. 6 con il dichiarato intento di dotare le società per azioni di maggiori dimensioni di un modello organizzativo atto a realizzare la “dissociazione tra proprietà (dei soci) e potere (degli organi sociali)” pone l’interprete di fronte a rilevanti problemi ermeneutici, che presumibilmente hanno contribuito allo scarso successo applicativo dell’istituto. La profonda incertezza nella ricostruzione della sua disciplina deriva da una tecnica legislativa incerta e lacunosa, che ha posto in posizione di primazia il sistema tradizionale, ricalcando su quest’ultimo la regolamentazione dei sistemi alternativi attraverso molteplici e a…
Frontiera geografica e frontiere mentali nella «Saga di Eirik il Rosso»
2022
La «Saga di Eirik il Rosso» («Eiríks saga rauða») appartiene al gruppo delle “Family Sagas” ("Íslendinga sögur") dell’antica letteratura islandese. Essa si configura come un testo di straordinario interesse storico e antropologico perché contiene una delle più antiche narrazioni della penetrazione dei Vichinghi, prima in Groenlandia e poi nel Nuovo Continente (la cosiddetta Vinlandia), circa 500 anni prima della “scoperta” dell’America da parte di Cristoforo Colombo. Ma è anche un testo ricco di suggestioni che afferiscono alle dimensioni del magico, del meraviglioso, dell’immaginario, e insieme un’opera nella quale la “frontiera” geografica si fonde e si confonde – nella redazione scritta …
Regional sustainability transition through forest-based bioeconomy? Development actors' perspectives on related policies, power, and justice
2022
Forests and forest-based bioeconomy have central roles in the contemporary sustainability transition. However, the transition towards a bioeconomy is loaded with tensions regarding economic growth, ecological integrity, and social justice. These tensions reproduce varying transition discourses. Political actors at the level of the European Union (EU) and nation states take part in the processes creating the discourses and aim to govern the forest bioeconomy-based transition in certain directions viewed as favourable. The transition tensions are strongly felt in regions that are rich with forest resources but poor in terms of economic and political power, called ‘forest peripheries’. In this…
Scientific restoration and historical-artistic research of the Saint Giovanni Battista wooden polychrome gilded high-relief from Saint Barbara church…
2022
Lo scopo della presente ricerca è quello di descrivere i risultati del restauro scientifico supportato dalla ricerca archivistica e dall'analisi storico-artistica, dell'altorilievo ligneo policromo raffigurante San Giovanni Battista della chiesa di Santa Barbara a Naro, Agrigento, Italia, parte di un alterpiece di fine XV - inizi XVI secolo The purpose of the present research is to describe the results of the scientific restoration, supported by archival research and art-historical analysis, of the polychrome wooden high-relief representing St. John the Baptist from the church of Santa Barbara in Naro, Agrigento, Italy, part of a late 15th- to early 16th-century alterpiece
Architettura emergenziale: buone pratiche esecutive
2022
This paper provides a comparative overview of different types of (temporary) shelters that have recently been used in various field locations in response to a forced displacement due to disastrous events. In particular, possible strategies useful to increase the sustainability of the humanitarian response and reduce the carbon footprint, while ensuring the adequacy and suitability of the shelters themselves, are here explored. This study investigates a systematic design framework that is often constrained by many obstacles such as the limited availability of low-cost materials, and a lack of local labour experience. To reduce the negative impact of a disaster, especially in the developing c…
Heterogenizing palladium tetraiodide catalyst for carbonylation reactions
2022
We report the first example of successful heterogenization of the classical PdI42- carbonylation catalyst, achieved in two simple steps from ionic liquid-functionalized multi-walled carbon nanotubes (MWCNTs). The newly developed materials (PdI4@MWCNT-imi-X, X = Br, I) present the PdI42- anion supported on an imidazolium network (imi) grown on MWCNTs and have been fully characterized. The activity of PdI4@MWCNT-imi-X has been successfully tested in a paradigmatic carbonylation reaction, the oxidative monoaminocarbonylation of 1-alkynes with amines to give high value added 2-ynamides (obtained in good yields, 50–84%, starting from various substrates). The heterogeneous catalyst could be easil…
Development of processes, qualification, and de-risking for the Ariel primary mirror
2022
The work carried out in the Ph.D. program focused on developing the optics design of the Atmospheric Remote-Sensing Infrared Exoplanet Large Survey (Ariel) telescope, an optical/infrared mission of the European Space Agency (ESA), whose primary mirror is an off-axis paraboloid mirror measuring 1.2 · 0.7m. The novelty of the telescope is that both the mirrors and the telescope structure will be made of aluminium, and the primary mirror will be made of bare aluminium without a thick hard coating. The choice is mainly due to the thermo-mechanical properties of the material, and the usage of the same material for the whole structure will allow better heat exchange between the mirror and the opt…