36 research outputs found
Infračervená spektroskopie multiferoik
No full textInfračervená spektroskopie multiferoik Autor:Veronica Goian Ústav: Oddělení dielektrik, Fyzikální ústav AV ČR v.v.i, Na Slovance 2, 182 21, Praha 8 Abstrakt: Pomocí infračervené spektroskopie jsme studovali řadu multiferoických a magnetoelektrických látek. Náš výzkum byl často kombinován radiofrekvečními, mikrovlnnými, teraherzovými, ramanovskými a strukturními měřeními mých kolegů, jakož i magnetickými, a elastickými studiemi, na kterých jsem se podílela. Naším hlavním cílem bylo komplexní studium kvantově- paraelektrického antiferomagnetika EuTiO3 ve formě krystalů, keramik i tenkých vrstev. V objemových vzorcích EuTiO3 jsme objevili u 300 K antiferodistortivní přechod z kubické mPm3 do tetragonální I4/mcm struktury. Nízkoteplotní dielektrické vlastnosti v EuTiO3 jsme vysvětlili anomálním teplotním chováním polárních fononů. Velký a anizotropní magnetoelektrický jev, který jsme našli v EuTiO3, jsme objasnili a experimentálně potvrdili pozorováním ladění fononových frekvencí vnějším magnetickým polem. Naše studia tahově napnutých vrstev EuTiO3 odhalila u 250 K posuvný ferroelektrický fázový přechod. Naši američtí kolegové objevili pod 4.2 K feromagnetické uspořádání ve stejných tenkých vrstvách. Tím jsme experimentálně potvrdili nedávno teoreticky předpovězenou novou možnost přípravy silných...Infrared Spectroscopy of Multiferroics Author: Veronica Goian Institute: Department of Dielectrics, Institute of Physics of the Academy of Sciences, Na Slovance 2, 182 21 Prague 8 Abstract: We have investigated numerous multiferroic and magnetoelectric materials mainly using infrared (IR) spectroscopy. Nevertheless, the studies were frequently combined with radio-frequency, microwave, THz, Raman and structural measurements provided by our colleagues, as well as by magnetic and elastic investigations, where we participated. Our main aim was the complex study of quantum-paraelectric antiferromagnet EuTiO3 in the form of crystals, ceramics and thin films. Near 300 K we have discovered an antiferrodistorive phase transition from cubic mPm3 to tetragonal I4/mcm structure in bulk EuTiO3 and explained its low-frequency dielectric properties by anomalous polar phonon behavior. Large and anisotropic magnetodielectric effect, which we found in EuTiO3, was successfully explained and experimentally confirmed by observation of tuning of phonon frequency with magnetic field. Our IR studies of tensile strained EuTiO3 thin films revealed a displacive ferroelectric phase transition near 250 K. Our American colleagues revealed the ferromagnetic order below 4.2 K in the same strained EuTiO3 thin film. In such way we have...Matematicko-fyzikální fakultaFaculty of Mathematics and Physic
Infrared Spectroscopy of Multiferroics
No full textInfrared Spectroscopy of Multiferroics Author: Veronica Goian Institute: Department of Dielectrics, Institute of Physics of the Academy of Sciences, Na Slovance 2, 182 21 Prague 8 Abstract: We have investigated numerous multiferroic and magnetoelectric materials mainly using infrared (IR) spectroscopy. Nevertheless, the studies were frequently combined with radio-frequency, microwave, THz, Raman and structural measurements provided by our colleagues, as well as by magnetic and elastic investigations, where we participated. Our main aim was the complex study of quantum-paraelectric antiferromagnet EuTiO3 in the form of crystals, ceramics and thin films. Near 300 K we have discovered an antiferrodistorive phase transition from cubic mPm3 to tetragonal I4/mcm structure in bulk EuTiO3 and explained its low-frequency dielectric properties by anomalous polar phonon behavior. Large and anisotropic magnetodielectric effect, which we found in EuTiO3, was successfully explained and experimentally confirmed by observation of tuning of phonon frequency with magnetic field. Our IR studies of tensile strained EuTiO3 thin films revealed a displacive ferroelectric phase transition near 250 K. Our American colleagues revealed the ferromagnetic order below 4.2 K in the same strained EuTiO3 thin film. In such way we have..
PARENTS COUNSELING FOR IMPROVING THE CAPACITY OF SOCIALIZATION OF THEIR PRESCHOOL CHILDREN: 10.24250/JPE/2/2019/CG
No full textSocial networks are gaining more and more users among adults and adolescents. Socialization is not done anymore, nowadays face to face, but online. One of the major effects of this phenomenon is the socialization difficulties that preschool children have when entering kindergarten. The purpose of the present research is to improve the socialization capabilities of preschoolers, using as a method the counseling of parents. The counseling process lasted two months and have been approached topics related to parent-child relationships, parent’s identification of the child's stimulation needs, ways of meeting these needs, parents 'involvement in the children's games, parents' collaboration with the kindergarten represented by educator and social worker. The intensity of the difficulties of socializing the children was appreciated at the beginning and the end of the experiment. The results show that if the parents are more involved in the activities of the children following the counseling by the social worker, then their ability to socialize will see significant improvements
Transnational Wellbeing Analysis of the Needs of Professionals and Learners Engaged in Adult Education
No full textAbstractThe study is part of an European Lifelong Learning project named WELNESS – Skills for a true wellbeing that aims to equipping adult education professionals and learners in skills that will allow them to monitor their level of wellbeing and, when needed, to apply self-regulation strategies in order to return to satisfying level of wellbeing. This study represents the transnational wellbeing analysis – a study that aims to examine the needs of professionals and learners engaged in adult education and in particular to assess their baseline level of wellbeing and problems that they have that affect the level of their wellbeing. About 350 learners and 140 professionals in adult education were evaluated through questionnaires assessing their wellbeing and 35 learners and 35 professionals participated in focus-groups assessing their needs in relation to wellbeing.The results of the research will serve as a basis for the development of 6 workshops for educators and learners, workshops that aim to enhance their skills and level of wellbeing
RECOVERY OF CHILDREN WITH INTELLECTUAL DISABILITIES IN THE MASS SCHOOL
No full textThe author presents in the theoretical framework some theories about intellectualdisability, common in the literature; the characteristic features of this and theprograms of recovery. The research is based on the idea that if a group of childrenwith intellectual disability is subject to a game-based learning training, then they willmake significantly greater progress than a group of children with intellectualdisabilities who did not benefit from this training. On a group of 43 children weremeasured the progress made by half of them who underwent this training through thegame. The results recorded after inferential data processing confirm the validation ofdeparture assumptions. It can be concluded that the intervention program structuredon different types of games has a high efficiency, which determines the need tointroduce game activities to help children with intellectual disabilities to expressthemselves more easily within a framework appropriate from an emotional andeducational point of view
PROFILE OF SOCIAL SERVICES FROM JIU VALLEY IN LIGHT PROFESSIONALS PERCEPTION. QUALITATIVE APPROACH
No full textThis study aims to analyse Jiu Valley social services profile using a qualitative perspective – focus grup analysis, by investigating perceptions of social services professionals from Jiu Valley, Hunedoara County, Romania. The qualitative methods of investigation, particularly important in achieving a comprehensive profile of social services from the Jiu Valley was to achieve a focused discussion sessions on social services. The following objectives were targeted by focus group: analysis of social professionals’ perception on social services from the Jiu Valley, Hunedoara County and identifying internal and external factors, to put their mark on the functioning of social services. Upon completion of discussions session focusing on social services in the Jiu Valley to conclude on the following aspects: social
professionals perceive favorable development of social services in the Jiu Valley region in the period 2002-2008, and considering the dynamic development of these services is progressive. There are a number of elements which are seen by professionals as catalysts for the proper functioning and development of social services and factors inhibiting or blocking the functioning of these services
A COMPARATIVE ANALYSIS BETWEEN THE PERCEPTIONS AND ATTITUDES OF STUDENTS IN TWO HIGH SCHOOLS WITH DIFFERENT STATUS REGARDING THE PHENOMENON OF BULLYING IN SCHOOLS: doi>10.24250/JPE/1/2020/AM/CG/FLV/DSB
No full textBullying is described as a set of aggressive actions, characterized byintent, repetition and an imbalance of forces. These characteristics refer tothe fact that the aggressor chooses a weaker victim, who will beaggressively and repeatedly assaulted, usually in school. Wanting to explorethis topic locally through the eyes of the students, we conducted a researchto identify the differences in perception and attitude of the students from twodifferent high schools (a national college and a technological high school),regarding this phenomenon. The main hypothesis is that tensions anddifficulties in the school environment can affect the attitudes of studentsregarding violence. We applied a questionnaire to 72 students (36 fromeach high school) from Sighetu Marmatiei. The results show that thestudents from the technological high school, know more information aboutbullying, and they consider this phenomenon to be less frequent comparedto the students from the national college, and the feeling of being safe atschool is greater. Students from both high schools expressed pro-victimattitudes to a greater extent, but the attitude toward the aggressor was morenegative in the case of students from the national college and more positivein the other school. We can conclude that if the academic standards of thestudents are higher, there is more tension is the school atmosphere, whichcan generate bullying situations and feelings of insecurity at school
Factor structure and psychometric properties of a Romanian translation of the drive for Muscularity Scale (DMS) in university men
No full textWe examined the psychometric properties of a Romanian translation of the 15-item Drive for Muscularity Scale (DMS). Male university students from Romania (N = 343) completed the DMS, as well as measures of self-esteem, body appreciation, and muscle discrepancy. Exploratory factor analysis indicated that DMS scores reduced to two factors that related to muscularity-oriented attitudes and behaviours, with both first-order factors loading onto a higher-order factor. However, confirmatory factor analysis indicated that a model with two first-order factors and a higher-order factor had poor fit. A two-factor model without a higher-order construct achieved acceptable but mediocre fit. Scores on the two-factor DMS model had adequate internal consistency and demonstrated acceptable convergent validity (significant correlations with self-esteem, body appreciation, and muscle discrepancy). These results provide support for a two-factor model of DMS scores in a Romanian-speaking sample and extends the availability of the DMS to a rarely-examined linguistic group.</p
Factor structure and psychometric properties of a Romanian translation of the Body Appreciation Scale-2
No full textWe examined the psychometric properties of a Romanian translation of the 10-item Body Appreciation Scale-2 (BAS-2). A total of 453 university students from Romania completed the BAS-2, along with measures of disordered eating, self-esteem, satisfaction with life, and subjective happiness. In addition, a separate sample of university students (N=109) completed only the BAS-2 at two time-points three weeks apart. Principal-axis factor analysis indicated that BAS-2 scores had a one-dimensional factor structure in both women and men. Confirmatory factor analysis indicated that this factor structure had adequate fit, but invariance across sex was not supported. Further analyses indicated that BAS-2 scores evidenced internal consistency, convergent validity, and test-retest reliability in both women and men. These results suggest that BAS-2 scores reduce to one dimension in Romanian adults, but the lack of sex invariance may indicate that the same latent construct is not being measured in women and men.</p
Descaminhos gerais: a representação do jagunço em Bernardo Élis
No full textEste trabalho, Descaminhos Gerais: a representação do jagunço em Bernardo Élis, visa
estudar as formas com as quais o autor goiano, Bernardo Élis, representa e configura as
imagens do jagunço no seu discurso romanesco, O Tronco. Neste sentido, procuramos, através
de uma perspectiva histórica, encontrar as origens míticas e literárias desta personagem
recorrente de nossa Literatura, mormente no Regionalismo brasileiro, e entender como ela foi
utilizada pela escritura bernardiana.This work, General Unpaths: the jagunço's representation in Bernardo Élis, aims to study
the ways in which the Goian author, Bernardo Élis, represents and configures the images of the
jagunço in his novelistc discourse, O Tronco. In this sense, we tried, through a historical
perspective, to find the literaries origins of this usual character in our Literature, mainly in the
Brazilian Regionalism, and understand how she was utilized in bernardian writing
