Search results for " Be"

Experimental Validation of Maximum Constant Boost Control and Switching Frequency Optimal for three-phase Quasi-Z-Source Converters

2020

This paper presents a modified modulation scheme for quasi-Z-Source converters, based on the Maximum Constant Boost Control (MCBC) concept and Switching Frequency Optimal (SFO) as reference signal. The effectiveness of the proposed technique is validated by comparing the obtained results (in terms of AC harmonic content and voltage stress) with those carried out from traditional modulation schemes. For this reason, a test bench has been assembled and the benefits of the SFO MCBC modulation scheme have been valuated.

Formaldehyde and total aldehydes in indoor air of public environments by voltammetry

2014

The proposed method involves active sampling, where a sampling pump is used to pull air through a solution and voltammetric analysis of the obtained solutions. No interferences have been observed. In addition, very little sample preparation is required. Analyses were performed in 19 indoor stations and one in outdoor. Measurements were carried out on University environments: Museum of Chemistry, Zoological Museum, libraries, laboratories, corridors, meeting rooms, photocopying room, machine shop and terrace. Formaldehyde concentrations in analyzed samples ranged from 2.6 to 85 μg m-3 (median = 32 μg m-3), while the sum of others aldehydes ranged from 2 to 25 μg m-3 (median =2.4 μg m-3). In …

Micro-determination of dithiocarbamates in pesticide formulations using voltammetry

2013

Abstract The purpose of this work was to develop a reliable method for the micro-determination of dithiocarbamates (mancozeb, maneb, propineb, nabam, Na(CH3)2DTC, zineb, ziram, ferbam and thiram) in pesticide formulations for agriculture using adsorptive stripping voltammetry (AdSV). The accuracy of analytical method was valued by analyzing simulate formulation samples prepared by us with known amounts of active ingredients. In addition, the applicability of the AdSV procedure for the analysis of DTCs and EBDTCs in micro-samples was evaluated by estimating its recoveries from spiked commercial formulate samples. The accuracy, valuated as recovery percentage ranged between 85% and 97%. The p…

Relationship between volume and energy of vector fields

2001

Abstract A unified study of energy and volume functionals is presented here by determining the critical points of a functional that extends simultaneously energy and volume and that is defined on the product of the manifold of smooth maps C∞(M,N) times the manifold M of riemannian metrics on M. The restriction of this functional to different submanifolds of the space of vector fields X (M)× M is also considered, and used to study several functionals generalizing volume and energy or total bending of vector fields

Gestural Agency in Human-Machine Musical Interaction

2017

Musical technologies are evolving in such a way that they start to resemble the people that use them. In this vision it seems pertinent to abandon the conception of musicians as users of musical instruments in favor of machines and humans interacting to make music. Both the machine and the human can be modeled as embodied cognitive agents that comprise a network of musical gestures. These gestures are multi-modal signals that allow the agents to exert influence upon each other towards making music. This standpoint integrates traditional and novel music-making technologies, towards a better understanding of musical interaction. peerReviewed

The impact of children’s socioemotional development on parenting styles: the moderating effect of social withdrawal

2020

This study focused on associations between children’s socioemotional development (prosocial behaviour, internalizing and externalizing problems) and parenting styles (affection, behavioural control, and psychological control), and the moderating role of children’s social withdrawal (as a temperamental characteristic) in these associations. Children’s socioemotional development (n = 314) were rated by teachers at three-time points (grades 1–3). Parents completed questionnaires measuring their parenting styles at the same three-time points. The level of social withdrawal was obtained at the end of kindergarten from teachers’ reports. Panel analysis showed that prosocial behaviour was associat…

Intentiolähtöinen lähestymistapa käytettävyyttä koskevien vaatimusten määrittelyyn : kuluttajamarkkinoille suunnatun innovatiivisen ohjelmistotuottee…

2012

Complex plant quality—microbiota–population interactions modulate the response of a specialist herbivore to the defence of its host plant

2022

Many specialist herbivores have evolved strategies to cope with plant defences, with gut microbiota potentially participating to such adaptations. In this study, we assessed whether the history of plant use (population origin) and microbiota may interact with plant defence adaptation. We tested whether microbiota enhance the performance of Melitaea cinxia larvae on their host plant, Plantago lanceolata and increase their ability to cope the defensive compounds, iridoid glycosides (IGs). The gut microbiota were significantly affected by both larval population origin and host plant IG level. Contrary to our prediction, impoverishing the microbiota with antibiotic treatment did not reduce larv…

The Emotion Detectives Game: Supporting the Social-emotional Competence of Young Children

2017

The potential of digital games to enhance learning in different areas of child development has drawn increasing interest amid growing concern about children’s emotional well-being, social-emotional difficulties, and problem behaviors alongside diminishing economic resources for intervention and habilitation. However, digital games designed to promote social-emotional competence are surprisingly scarce. In this chapter, we explore children’s use of the digital game Emotion Detectives (ED), designed to promote children’s acquisition of emotional knowledge skills (e.g., recognizing, appreciating, and understanding emotions and their expressions), prosocial behaviors (e.g., helping, sharing, co…

The impact of store atmospherics and store layout on customer behavior in a hardware store retail setting : case: do-it-yourself store

2015

Comprehensive apprehension of retail establishment’s atmosphere’s effects on its cus-tomers’ overall perceptions of the store and thus purchasing behavior is an essential goal for any retailer, yet the previous marketing literature has converged on understanding the shopping environments of mostly malls, grocery stores, furniture stores and clothing stores. A window was left open for construing a wholly different shopping environment; DIY (do-it-yourself)/ hardware/ home improvement store. Shopping environment studies rely largely on environmental psychology theories in their attempts of deciphering the effects of environment on individuals. This study is fundamentally similar in nature, by…