Predictors of students' self-esteem: The importance of body self-perception and exercise

Cilj istraživanja je da se ispita validnost fizičke samoefikasnosti, socijalne anksioznosti zbog izgleda i fizičkog vežbanja u predikciji samopoštovanja, kao i da se ispitaju polne razlike. Uzorku od 232 studenta zadati su Rozenbergova skala samopoštovanja (SES), Skala fizičke samoefikasnosti (PSES), Skala socijalne anksioznosti zbog izgleda (PSA), kao i kratak upitnik o fizičkom vežbanju. Prosečno ispitanici vežbaju 2.75 puta nedeljno, imaju umereno visoko samopoštovanje i fizičku samoefikasnost i nisku socijalnu anksioznost zbog izgleda. Nisu dobijene polne razlike u samopoštovanju, dok su na drugim ispitivanim varijablama polne razlike značajne i to uglavnom u korist muškaraca. Analize pokazuju da samopoštovanje korelira pozitivno sa fizičkom samoefikasnošću i fizičkim vežbanjem i negativno sa socijalnom anksioznošću zbog izgleda. Regresiona analiza ukazuje da fizička samoefikasnost, socijalna anksioznost zbog izgleda i pol (ženski) značajno predviđaju samopoštovanje, dok fizičko vežbanje nije značajan prediktor. Naredne studije bi trebalo da istraže relacije samopercepcije vezane za telo, fizičkog vežbanja i domenospecifičnog samopoštovanja.The goal of this study was to explore the predictive validity of physical self-efficacy, social physique anxiety, and physical activity in the self-esteem of students, as well as to investigate potential gender differences. The Rosenberg's Self-Esteem Scale (SES), Physical Self-Efficacy Scale (PSES), Social Physique Anxiety Scale (SPAS), and a short questionnaire about physical activity were administered to a sample of 232 university students. The overall results show that students are moderately physically active (on the average, 2.75 times per week), have moderately high selfesteem and physical self-efficacy and lower social physique anxiety. No gender differences were detected in self-esteem. In other variables, gender differences are significant and mostly in favour of males. The analyses showed that self-esteem correlated positively with physical self-efficacy and physical activity, and negatively with social physique anxiety. The regression analyses indicated that physical selfefficacy, social physique anxiety and female gender were significant predictors of self-esteem. Physical activity was not a significant predictor of self-esteem. Future studies should investigate the relations of body self-perceptions, physical exercise, and domain-specific self-esteem

Predictors of students' self-esteem: The importance of body self-perception and exercise

Cilj istraživanja je da se ispita validnost fizičke samoefikasnosti, socijalne anksioznosti zbog izgleda i fizičkog vežbanja u predikciji samopoštovanja, kao i da se ispitaju polne razlike. Uzorku od 232 studenta zadati su Rozenbergova skala samopoštovanja (SES), Skala fizičke samoefikasnosti (PSES), Skala socijalne anksioznosti zbog izgleda (PSA), kao i kratak upitnik o fizičkom vežbanju. Prosečno ispitanici vežbaju 2.75 puta nedeljno, imaju umereno visoko samopoštovanje i fizičku samoefikasnost i nisku socijalnu anksioznost zbog izgleda. Nisu dobijene polne razlike u samopoštovanju, dok su na drugim ispitivanim varijablama polne razlike značajne i to uglavnom u korist muškaraca. Analize pokazuju da samopoštovanje korelira pozitivno sa fizičkom samoefikasnošću i fizičkim vežbanjem i negativno sa socijalnom anksioznošću zbog izgleda. Regresiona analiza ukazuje da fizička samoefikasnost, socijalna anksioznost zbog izgleda i pol (ženski) značajno predviđaju samopoštovanje, dok fizičko vežbanje nije značajan prediktor. Naredne studije bi trebalo da istraže relacije samopercepcije vezane za telo, fizičkog vežbanja i domenospecifičnog samopoštovanja.The goal of this study was to explore the predictive validity of physical self-efficacy, social physique anxiety, and physical activity in the self-esteem of students, as well as to investigate potential gender differences. The Rosenberg's Self-Esteem Scale (SES), Physical Self-Efficacy Scale (PSES), Social Physique Anxiety Scale (SPAS), and a short questionnaire about physical activity were administered to a sample of 232 university students. The overall results show that students are moderately physically active (on the average, 2.75 times per week), have moderately high selfesteem and physical self-efficacy and lower social physique anxiety. No gender differences were detected in self-esteem. In other variables, gender differences are significant and mostly in favour of males. The analyses showed that self-esteem correlated positively with physical self-efficacy and physical activity, and negatively with social physique anxiety. The regression analyses indicated that physical selfefficacy, social physique anxiety and female gender were significant predictors of self-esteem. Physical activity was not a significant predictor of self-esteem. Future studies should investigate the relations of body self-perceptions, physical exercise, and domain-specific self-esteem

PISA 2012 mat hematics literacy in Serbia: A multilevel analysis of students and schools

U ciklusu istraživanja PISA 2012 fokus je bio na matematičkoj pismenosti. Podaci prikupljeni u PISA istraživanju u Srbiji na 4684 ispitanika pokazuju da učenici u proseku imaju značajno niže postignuće u odnosu na prosečno postignuće zemalja koje pripadaju OECD. Cilj istraživanja je bio da se istraže prediktori matematičke pismenosti na nivou učenika (varijable prvog reda) i škole (varijable drugog reda) korišćenjem hijerarhijskog modelovanja. Najvažniji rezultat se odnosi na to da varijable na nivou učenika i na nivou škole približno jednako objašnjavaju varijabilnost PISA matematičkog postignuća. Rezultati pokazuju da se od varijabli na nivou učenika kao značajni prediktori izdvajaju pol, nekognitivne karakteristike (matematička anksioznost, matematička samoefikasnost, matematički self-koncept i otvorenost za rešavanje problema), način na koji učenici opažaju kvalitet nastave i navike u učenju. Rezultati ukazuju i da više varijabli na nivou škole ima direktne efekte na PISA matematičko postignuće i da nekoliko varijabli na nivou škole moderira odnos između karakteristika učenika i PISA postignuća.In PISA 2012 cycle, the focus was on the mathematics literacy. Data collected in PISA survey in Serbia on 4684 respondents show that students on average have significantly lower performance compared to average OECD performance. The aim of the study was to explore student (variables at the first level) and school level predictors (variables at the second level) of the PISA mathematics literacy using multi-level modelling. The most important finding is that student and school level variables are explaining variability in PISA mathematics performance almost equally. Results show that on the student level, significant predictors are gender, noncognitive characteristics (mathematics anxiety, mathematics self-efficacy, mathematics self-concept, openness for problem-solving), student perceived teaching quality and studying habits. Results also indicate that several school-level variables have direct effects on the PISA math performance and that several school-level variables moderate the relationship between student characteristics and PISA performance

"Urban renewal under the scope of security issues" - case study of Belgrade - glommy parts of the city

City center of Belgrade, Serbia, is broadly known for its generally high level of safety, which gives him a special advantage in between the European cities; having in mind its past, postwar trauma oriented inhabitants and migration processes passing through. Never the less, to upgrade the level of safety of certain quarters by urban renewal would lead Belgrade to more resilient city, more enjoyable and open to touristic but primarily with more comfort for its inhabitants. There are, indeed, some less secure spots what the city statistics clearly show; which could be improved through the process of urban renewal: through reconstruction, urban regeneration and conservation – especially places left demolished after 1999. NATO bombing. Along with identifying the factors of urban renewal, professionals should be open to explore concepts which bring new light to how resilience could be enforced. While concept of fragility or “zero tolerance” is defined as a strong sensitivity to a stressor, antifragility is associated to generating positive responses to stress instead of harm. Antifragility describes cautious actions, being strongly related to risk management, and, as we may propose, represents a component to be included within the urban renewal and community resilience factors. As new risks can emerge overnight, constant assessment should be made to detect whether the urban renewal is facing benefits or impairments in coping with unexpected events or in the phases of expecting it. The question, as always, is one of proportion (How much of each concept/strategy?) and relevance (What kinds of dangers deserve the different concepts?), and ultimately, given uncertainty, of bias (When in doubt, which concept should receive priority?). This paper is analyzing those gloomy spots in the city in order to establish the guidelines based on real indicators and parameters targeting public resilience in response to particular known or unknown security risks. For risks with high ambiguity, it can be suggested to adopt a approach which is designed to reach stakeholder consensus on the acceptability and tolerability of a risk based on multi-level governance processes termed ‘distributed responsibility’

Allergen immunotherapy in the polyallergic adolescent

Allergen immunotherapy is the only disease-modifying treatment option for allergic rhinitis, with adherence being its major limitation. We report a case of an adolescent with rhinitis, proven allergy to multiple non-homologous pollens, and troublesome symptoms despite maximal symptomatic therapy during the late spring and early summer months. Allergen immunotherapy to the most clinically relevant allergen was initiated under the supervision of a pediatrician. Shortly before her second year of treatment, she transferred to adult care and maintained a high degree of adherence and a favourable response to immunotherapy. In conclusion, allergen immunotherapy is effective in polyallergic adolescents with good adherence

Uticaj prirodnih biostimulatora i spororazlagajućih đubriva u komercijalnoj proizvodnji rasada begonija (Begonia semperflorens)

The present research in the study of the effect of application of natural bio-stimulants and slow-release fertilizers on commercial production of begonia (Begonia semperflorens) saplings. Two types of containers were deployed in the production process, whereas the results of the experimental research showed that the application of both slow-release fertilizers and natural bio-stimulants in further production is only justifiable in cases when large volume containers are deployed in commercial production of sapling. The application of those significantly influences the increase in stalk weight, number of sprouts and number of blossoms. The application of natural bio-stimulants may be justifiable with the saplings that have previously been produced in smaller containers, since they have auspicious effect upon development of the root, i.e. upon its length.U radu je ispitivan uticaj primene prirodnih biostimulatora i spororazlagajućih đubriva u komercijalnoj proizvodnji rasada begonija (Begonia semperflorens ).Za proizvodnju rasada korišćeno je dva tipa kontejnera a dobijeni rezultati eksperimentalnih istraživanja pokazali su da je primena i spororazlagajućih đubriva i prirodnih biostimulatora u toku dalje proizvodnje , opravdana samo u slučaju kada se za proizvodnju rasada koriste veći kontejnerima. Njihovom primenom utiče se značajno na povećanje nadzemne mase, broja pupoljaka i broja cvetova. Primena prirodnih biostimulatora može biti opravdana i kod proizvodnje rasada u manjim kontejnerima jer povoljno utiče na razvoj korena tj. njegovu dužinu

DIFFERENT LEVELS OF MOTOR ABILITIES IN BOYS AND GIRLS AGED 10 AND 9

The aim of this research is to confirm differences in the anthropometric characteristics and motor abilities of schoolchildren aged 9 and 10 compared by sex and age. The sample comprised 341 schoolchildren, divided into two subgroups of third (172) and fourth (169) graders. The research is of a transversal character and includes the measurement of anthropometric characteristics and motor abilities by applying the Eurofit fitness testing battery. The results show a significant difference based on sex in terms of body mass (t = 2.148), and as for motor abilities, there is a difference in the Shuttle run test (t = -3.709). A statistically significant difference considering the age of the tested population was observed in height (t = -10.327) and body mass (Z = -5,991), while in terms of motor abilities there was a statistically significant difference in the values of all the tests: Hand tapping (t = 4.735), the Standing long jump (Z = -3,575), Shuttle run (t = 12,248), the Flexed arm hang (Z = -2,167), Sit and reach (Z = -2,406), Sit-ups in 30 seconds (t = -9069). The research shows a higher statistically significant difference observed in body composition, but also in the motor area of the studied group in terms of age, and in relation to the statistically significant difference that was revealed by gender

Konstrukcija i empirijska provera testa homofobije

The paper presents development and empirical evaluation of the Homophobia scale (H25). The Homophobia scale consists of 25 items with a five-point Likert type scale. The sample of 476 subjects participated in the research. The results shown good psychometric properties of the H25 (KMO = .99, α = .97). Factor analysis revealed two highly correlated underlying dimensions of homophobia, which can be interpreted as 'homosexuality as a threat to a society' and 'homosexuality as a threat to me'. Convergent and predictive validities of the scale were also demonstrated. The H25 correlated with alternative measures of homophobia (feeling thermometer and connotative differential) as well as with discriminatory attitudes toward homosexuals. Additionally, homophobia was related to gender, political orientation, religiousness, contact with homosexuals and basic personality traits (i.e., Openness and Conscientiousness). In conclusion, the H25 proves to be a reliable and valid measure of homophobia in heterosexuals, which can be used for both research and practical purposes.U ovom radu predstavljena je konstrukcija i evaluacija Testa homofobije koji u sadržinskom smislu objedinjuje dosadašnja znanja i ideje o prirodi ovog fenomena. Test homofobije (H25) sastoji se od 25 stavki u formi tvrdnji kojima je pridružena petostepena skala Likertovog tipa. Na uzorku od 476 ispitanika proverene su psihometrijske karakteristike testa i njegova faktorska struktura. U celini test pokazuje dobre psihometrijske karakteristike (KMO = .99, α = .97). Faktorskom analizom ekstrahovana su dva visoko korelirana faktora, koja su interpretirana kao 'homoseksualnost kao pretnja za društvo' i 'homoseksualnost kao pretnja za mene'. Takođe, test je pokazao zadovoljavajuću konvergentnu validnost spram dve alternativne mere homofobije, kao i visoku predikciju diskriminatornih stavova prema osobama homoseksualne orijentacije. Dodatno, pokazano je da homofobija, merena konstruisanim instrumentom, ima veći broj socio-demografskih i personalnih korelata. Homofobiji su sklonije osobe muškog pola, religiozne osobe, osobe konzervativne političke orijentacije, zatim osobe koje imaju manje kontakta sa homoseksualnom populacijom, i osobe nižih skorova na dimeziji Otvorenosti, a viših na dimenziji Savesnosti. U celini, konstruisani instrument predstavlja pouzdanu i validnu meru heteroseksualnog stava prema homoseksualnoj populaciji, te predstavlja ekonomičan instrument pogodan za primenu, kako u istraživačke tako i u praktične svrhe

Biowaste-Based Carbon Material for Malathion Removal from Water

The extensive application of a pesticide, such as malathion, is a potential risk to human health as it can easily enter the food chain. An efficient and economical method for pesticide removal from the environment is necessary. In this work, we prepared a carbon material derived from biowaste (rabbit litter) for the removal of malathion from water. The adsorption capacity of carbon material derived from used litter (UL) is higher than that made from not-used litter. The maximum adsorption capacity of UL is 1.16 x10-5 mol/g for malathion

Parametric frequency analysis of oscillatory behavior of mouse Zona Pellucida spherical net model: cases of successful and of unsuccessful fertilization

The current paper proposes a model for describing mechanical phenomena that occur during the process of mammal fertilization when spermatozoa impact the surface of Zona Pellucida. Zona pellucida (ZP) is a dynamical 3D matrix that surrounds the mammalian oocyte. In the process of fertilization, sperm cell has to penetrate this structure. To describe impact of sperm cells with velocities that are effective and those that are ineffective relative to the oscillatory behavior of ZP, the discreet continuum model in the form of spherical net model is used. Resultant trajectories of knot mass particles dynamics of mouse ZP spherical net model in the form of generalized Lussajous curves are presented. Using generalized Lussajous curves, parametric frequency analysis of oscillatory behavior of knot material particles in the mouse ZP spherical net model is conducted. The influence of impact angles of sperm cells on corresponding knot mass particle trajectory is discussed. Favorable and unfavorable trajectories of knot mass particle motions are discussed in the context of successful fertilization