THE STABILITY OF THE ACHIEVEMENT MOTIVE STRUCTURE AND ITS OPERATIONALIZATION WITH THE SCALE MOP2002

The objective of this paper is to test the stability of construct characteristics and the factorial structure of the achievement motive and the psychometrical characteristics of the instrument MOP 2002. The analyses are performed on the sample comprising 2846 examinees of different gender and of different educational profile. The sample has been collected during the period of 15 years in a transitional social context. The instrument MOP 2002 is applied, it contains 55 items and has a form of five-level scale. The results of factor analysis have shown that the instrument is multi-dimensional and consist of four factors: competing with others, persistence in realizing goals, realizing goals as source of satisfaction and orientation towards planning. All of these factors are, among others, important for successful participation in the competitive sport. By factor analysis of the second order it is established that the instrument has a unique object of measuring and satisfactory psychometrical characteristics proven stable during 15 years of application on heterogeneous samples of examinees

Analiza metode izmjere građevinskih objekata 3D laserskim skenerima

Terrestrial laser scanning (TLS) in carrying out projects in the construction industry is increasingly applied. This paper is considering the issue of accuracy that can be achieved by pulse TLS, evaluation of the measurement results and the applicability of this technology for the structure survey. Analyzing the measurement methods allows the identification of systematic errors of the instrument, which is serious obstacle for high-accuracy of TLS. In this article a standardization measurement procedure and the relationship between the projected tolerance and TLS calibration are given. At the same time the results of individual calibration of pulsed Leica scanners are presented, in which the systematic errors of measurement results are determined by the given model. Evaluation of survey results confirmed the high applicability of TLS for the structures survey.Pri realizaciji projekata u građevinarstvu sve češće se primjenjuje terestričko lasersko skeniranje (TLS). U radu se opisuje točnost koja se može postići impulsnim TLS-om, evaluacija rezultata mjerenja i primjena ove tehnologije za izmjeru građevinskih objekata. Analiza metode mjerenja omogućava identifikaciju sustavnih pogrešaka instrumenta, koje su ozbiljna smetnja za postizanje visoke točnosti TLS-om. U radu je dan standardni postupak mjerenja te veza između projektirane tolerancije i kalibracije TLS-a. Istovremeno su prikazani rezultati individualne kalibracije impulsnih skenera tvrtke Leica, pri kojoj su sustavne pogreške rezultata mjerenja određene integralno prema prikazanom modelu. Evaluacija rezultata mjerenja potvrđuje visoku primjenljivost TLS-a za izmjeru građevinskih objekata

PERSONALITY TRAITS AS PREDICTORS OF PERFECTIONISM

The aim of this study was to explore the role of personality traits as predictors of perfectionism and to determine the existence of gender differences in the ways perfectionism is manifested. The study was conducted on 302 respondents aged 18 to 57. The Perfectionism Inventory scale (PI) used to measure perfectionism assesses lower-order perfectionism facets: Concern Over Mistakes, High Standards for Others, Need for Approval, Organization, Perceived Parental Pressure, Planfulness, Rumination, and Striving for Excellence; and three higher-order facets: Conscientious Perfectionism, Self-Evaluative Perfectionism and Perfectionism Inventory Composite. The Big Five Inventory (BFI), based on the Big Five model of personality, was used for the evaluation of personality traits: Extraversion, Neuroticism, Conscientiousness, Agreeableness and Openness to experience. In determining gender differences, the t-test was used. Men scored higher than women on Organization, Planfulness, and Conscientious Perfectionism, whereas women scored higher than men on Perceived Parental Pressure. Three multiple regression analyses were conducted, one for each of the tested criterion variables, to test the significance of predictors of perfectionism. Predictor variables were the five dimensions of personality traits, and the criterion variables were the dimensions of higher-order perfectionism. All three tested models have statistical significance, and the sum of the predictors, made up of basic personality traits, accounts for one-fifth to one-third of the variance in the criterion measures of perfectionism. Almost all personality traits are shown to be significant predictors of perfectionism, with the exception of Conscientiousness, which is not a predictor of Self-Evaluative Perfectionism. Based on the results, it can be concluded that perfectionists generally keep to themselves, are less tolerant towards others, often worry, are sensitive to their own actions as well as those of others, but also open to new experiences. The obtained results contribute to a better understanding of the social adaptation and functioning of young adults, including young athletes

SPORTS PERFORMANCE AS A MODERATOR OF THE RELATIONSHIP BETWEEN COPING STRATEGY AND EMOTIONAL INTELLIGENCE

The sample consisted of 171 elite and 169 non-elite athletes. linear regression analysis was used to test the prognostic role of emotional competence on stress coping strategies, and hierarchical regression analysis was used to test the moderating role of performance in the relationship between emotional competence and coping strategies. The result shows that EI is related to task-oriented strategies and completely unrelated to emotion-oriented strategies. Sport performance moderates the relationship between managing and regulating emotions and using avoidant coping strategies, in a way that non-elite athletes with higher scores on this EI subfactor are more likely to use distraction-oriented coping. Key words: emotional intelligence, coping, moderation, elite and non-elite athletes</p

The effects of detergent, sodium tripoly-phosphate and ethoxyled oleyl-cetyl alcohol on metabolic parameters of the fungus trichothecium roseum link

The degradation of detergents that are dispersed in water and soil partially depends on the metabolic activities of fungi. Among the fungi that have this ability, Deuteromycetes are particularly noted for their biochemical characteristics. Taking this into account, it was of interest to analyze the influence of detergent and its main compounds, ethoxyled oleylcetyl alcohol (AOC) and sodium tripoly-phosphate (TTP), on the metabolism of the fungus Trichothecium roseum. Our results revealed that both detergent and AOC had an inhibitory effect on the bioproduction of free organic acids, while TTP stimulated their production. Also, detergent inhibited the bioproduction of basic amino acids, with the exception of alanine. In addition, detergent applied at 1% concentration inhibited the bioproduction of proteins and the total biomass of the fungus, while AOC and TTP inhibited the production of proteins, but stimulatedl the production of Trichothecium

RECOGNITION OF EMOTION AND ADULT ATTACHMENT

Glavni cilj istraživanja bio je utvrditi odnos između afektivne privrženosti i točnosti u dekodiranju facijalnih ekspresija osnovnih emocija (ljutnja, prezir, gađenje, strah, sreća, tuga i iznenađenost). Pretpostavka je bila da će kod viših razina dimenzija (anksioznost i izbjegavanje) biti niža razina uspješnosti prepoznavanja facijalnih ekspresija. U istraživanju je sudjelovalo 249 studenata različitih profesionalnih orijentacija s Filozofskog fakulteta Sveučilišta u Nišu, Srbija. U spolnoj strukturi muškarci su bili zastupljeni s 23,7 % (59 muškaraca), a žene sa 76,3 % (190 žena). Prosječna dob iznosila je 22,13 (SD = 1,596) godina. Instrumenti - Kao podražaj upotrijebili smo zbirku fotografija, Matsumoto and Ekman’s Japanese and Caucasian Facial Expressions of Emotion (JACFEE, 1988.). Primijenjen je i ECR-r upitnik za evaluaciju obrazaca afektivne privrženosti (Fraley, Waller i Brennan, 2000.). Potvrđena je hipoteza o vezi između dimenzija afektivne privrženosti (izbjegavanje i anksioznost) i uspješnosti u prepoznavanju osnovnih emocija (ljutnja, prezir, gađenje, strah, sreća, tuga i iznenađenost). Dimenzije afektivne privrženosti (izbjegavanje i anksioznost) negativno su povezane s uspješnosti ispitanika u prepoznavanju facijalnih ekspresija emocija.The main aim of this study was to examine the relationship between affective attachment and accuracy in decoding of facial expressions of basic emotions (anger, contempt, disgust, fear, happiness, sadness and surprise). It was expected that with the higher level of dimensions (anxiety and avoidance), the level of success in identifying facial expressions of emotions would get lower. The sample of respondents included 249 students of different professional orientations at the Faculty of Philosophy, University of Niš, Serbia. The gender structure consisted of 59 (23.7%) males and 190 (76.3%) females. The average age was 22.13 (SD = 1.596) years. Instruments. As a stimulus, we have used a collection of photos, »Matsumoto and Ekman’s Japanese and Caucasian Facial Expressions of Emotion« (Matsumoto and Ekman, 1988). Also, we have used the ECR-r-Questionnaire for the evaluation of the pattern of affective attachment (Fraley, Waller and Brennan, 2000). The hypothesis on the connection of dimensions of affective attachment (avoidance and anxiety) and the success in identifying basic emotions (anger, contempt, disgust, fear, happiness, sadness, surprise) has been confirmed. The dimensions of affective attachment (avoidance and anxiety) are negatively connected with the subjects’ success in identifying facial expressions of emotions

Treatment of Waste Copper Electrolytes Using Insoluble and Soluble Anodes

The use of copper anodes with non standard content of impurities for the treatment of waste, sulphur acid solutions that came as a result of the industrial process of electrolytic copper refining was investigated. Those solutions contain the high content of copper, nickel and arsine, and because of that, the copper anodes with high content of Ni, Pb, Sn and Sb were prepared. Examination the effect of high impurities content as well as the influence of the solution temperature on the anodes behaviour during the electrolytic process under the conditions that are the same as the industrial was the aim of this work. Obtained results clearly indicate that tested anodes could be used for the refined during the electrorefining process. Dissolution of copper anodes was not stoppage after the first appearance of the passivation region for A1 and A2 anodes while appearance of passivation for A3 anode, for test duration of 72 h, was not registered. The start time of the first passivation appearance is shorter in the case of the anode with high content of all impurities, anode A1. The first passivation occurrence was detected on higher temperature after about 29 h from the test starts. The change of chemical composition of electrolyte was monitored during electrolysis. Concentration of nickel in the working electrolyte at the end of process is increased and it corresponds to the Ni content in anodes. The copper and arsenic concentrations are decreased during the process. Arsenic passes into the anode slime, while the copper is deposited on the cathode and also passed in the slime. After the process is finished, obtained solution could be used for the nickel recover using the electrochemically or chemically methods

Electric Conductivity of Electrolytic Copper Powder Filled Poly(Lactide-co-Glycolide) Composites

This manuscript presents the results of investigating the properties of composite materials having poly(lactide-co-glycolide) (PLGA) matrix filled with electrolytically produced copper powder whose particles have a highly developed branched structure. The volume fraction of the copper powder used as a filler for the preparation of the composite was varied from 0.4 to 7.2 vol. %. The samples were prepared at 140 °C by hot molding injection. The effect of the morphology of electrolytically obtained copper powder on the appearance of the percolation threshold and on the conductivity of the composites was studied. Characterization included impedance spectroscopy (IS) measurement of electric conductivity and scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), and Fourier-transform Infrared Spectroscopy (FTIR) morphological analysis. Electric conductive pathways were formed throughout the entire volume of the composites, where their formation was purely stochastic in all the dimensions. The percolation threshold was 2.72 vol.%, which is significantly lower than the one stated in the literature for similar composites, since these kind of composites are investigated for the first time. This property can be attributed to the use of a filler of different, diverse morphologies

Osetljivost tri testa za određivanje antitela na receptor za tireostimulišući hormon kod pacijenata sa orbitopatijom udruženom sa štitnom žlezdom

Background: Thyrotropin receptor autoantibodies (TSH-R-Ab) are indispensable biomarkers in the laboratory assessment of thyroid-associated orbitopathy (TAO). Clinical sensitivity of three different assays for TSH-R-Ab determination was evaluated in patients with TAO. Methods: 87 consecutive TAO patients were enrolled and their serum samples analyzed in parallel with three assays. An ECLIA competitive binding and a chemiluminescent bridge immunoassay were used to measure total and bind-ing TSH-R-Ab concentration, while their functional activity was determined using a stimulatory TSH-R-Ab (TSAb) cell-based bioassay. Results: Compared to the two binding assays (ECLIA p<0.001, bridge p=0.003), the TSAb bioassay was more sensitive pertaining to the positive detection of TSH-R-Ab in TAO patients. No difference (p=0.057) was noted between the ECLIA and bridge assays regarding sensitivity rate. All patients with active and/or moderate-to-severe TAO tested positive in the TSAb bioassay (100% and 100%, respectively), while the positivity rates for bridge and ECLIA binding assays were 89.7% and 82.1% for active TAO, and 90.2% and 86.3% for severe TAO, respectively. Negative predictive values of the bioassay, bridge, and ECLIA assays were 100%, 75%, and 71%, respectively for active TAO, and 100%, 86%, and 71%, respectively for moderate-to-severe TAO. The superiority of the bioassay was most prominent in euthyroid (ET) TAO. Positivity rates of the TSAb bioassay, bridge and ECLIA binding assays were 89.6%, 75%, and 64.6%, respectively for inactive TAO; 86.1%, 69.4%, and 52.8%, respectively for mild TAO; 87.5%, 62.5%, and 12.5%, respectively for euthyroid TAO. The bridge assay correlated better with the ECLIA binding assay (r=0.893, p<0.001), compared to the bioassay (r=0.669, p<0.001). Conclusions: In patients with TAO of various activity and severity, the TSAb bioassay demonstrates a superior clinical performance compared to both ECLIA and bridge binding assays.Uvod: Autoantitela na receptore za tireostimulišući hormon (TSH-R-Ab) su nezamenljivi biomarkeri u laboratorijskoj proceni orbitopatije udru'ene sa štitnom žlezdom (TAO). U radu je procenjena klinička osetljivost tri različita testa za određivanje TSH-R-Ab kod pacijenata sa TAO. Metode: U studiju je ključeno 87 uzastopnih pacijenata sa TAO i njihovi uzorci seruma su analizirani paralelno sa tri testa. Za merenje ukupne i vezujuće koncentracije TSH-RAb korišćeni su ECLIA imunohemijski test kompetitivnog vezivanja i hemiluminiscentni imunohemijski "sendvič" test, dok je njihova funkcionalna aktivnost određena pomoću ćelijskog biološkog testa (bioeseja) za određivanje stimulatornih TSH-R-Ab (TSAb). Rezultati: U poređenju sa dva imunohemijska testa vezivanja (ECLIA P<0,001, "sendvič test" P=0,003), TSAb bioesej se pokazao najosetljivijim u pogledu pozitivne detekcije TSH-RAb kod TAO pacijenata. Nikakva razlika nije detektovana (P=0,057) između ECLIA i "sendvič" testa u pogledu stope osetljivosti. TSAb bioesej je bio pozitivan kod svih pacijenata sa aktivnom i/ili umerenom do teškom TAO (redom 100% i 100%), dok su stope pozitivnosti za sendvič i ECLIA imunohemijski test bile 89,7% i 82,1% za aktivnu TAO, i 90,2% i 86,3% za tešku TAO, redom. Negativne prediktivne vrednosti bioeseja, "sendvič" i ECLIA testova bile su redom 100%, 75% i 71%, za aktivnu TAO, odnosno 100%, 86% i 71%, redom za umerenu do tešku TAO. Superiornost biološke analize bila je najistaknutija kod eutiroidnog oblika (ET) TAO. Stope pozitivnosti TSAb bioeseja, "sendvič" i ECLIA testova vezivanja bile su redom 89,6%, 75% i 64,6%, za neaktivnu TAO; 86,1%, 69,4% i 52,8% za blagu TAO; 87,5%, 62,5% i 12,5% za eutiroidni TAO. "Sendvič" imunohemijski test je bio u boljoj korelaciji sa ECLIA testom kompetitivnog vezivanja (r=0,893, P<0,001), u poređenju sa bioesejom (r=0,669, P<0,001). Zaključak: Kod pacijenata sa TAO različite aktivnosti i težine TSAb bioesej pokazuje superiorne kliničke performanse u poređenju sa obe vrste imunohemijskih testova vezivanja (ECLIA i "sendvič test")

Polimerni magnetni kompoziti na bazi Nd-Fe-B

Various types and contents of magnetic powder and polymer matrix induce different mechanical, magnetic, electrical and optical properties of final composite material. The strong influence of relatively small amounts of filler particles on the dynamic mechanical properties of polymers has significantly contributed to increased use of polymer materials in many commercial applications. The higher content of magnetic filler has direct influence on magnetic properties of composites, but also may change the rheology of polymer melt during process and, subsequently, impact the mechanical strength of bonded magnets. For better insight into viscoelastic behaviour of composites, beside experiments, a theory that explicitly takes the shape factor, particle distribution, particle-particle interactions as well as particle-polymer matrix interactions into account is required. The mathematical prediction of storage modulus behaviour is examined. The several proposed analytical models are tested versus experimental results. Some of applied models agree very well with experimental data, whilst others deviate significantly.Različite vrste primenjenih magnetnih prahova i polimerne matrice, kao i njihovi udeli, utiču na mehanička, magnetna, električna i optička svojstva finalnog kompozitnog materijala. Veliki uticaj relativno malih udela čestica punioca na dinamičko mehanička svojstva polimera značajno doprinosi većoj komercijalnoj upotrebi kompozitnih materijala. Veliki udeli magnetnog praha u mnogome utiču na magnetna svojstva kompozita, ali takođe mogu dovesti do reoloških promena u polimeru tokom procesa topljenja, što ima direktan uticaj na mehanička svojstva polimerom vezanih (bonded) magneta. Radi boljeg uvida u visokoelastična svojstva kompozita, osim eksperimenata, neophodno je uzeti u obzir i teorijska razmatranja koja eksplicitno objašnjavaju uticaj faktora oblika, raspodelu čestica, interakcije između čestica, kao i interakcije između čestica i polimera. U tom smislu vršeno je i matematičko predviđanje ponašanja modula uskladištene energije (E') kompozita. Nekoliko predloženih analitičkih modela su testirani i upoređeni sa eksperimentalnim rezultatima. Neki od primenjenih modela se veoma dobro slažu sa dobijenim eksperimentalnim rezultatima, dok neki značajno odstupaju