Uber die Synthese von XeFa

Vergleichen wir di e Ergebnisse unserer Synthese von XeF,1 1 mit den anderen unabhangigen Resultaten ub er dieselbe Xe-Verbindung2,a,4 (die im allgemeinen gut iibereinstimmen), so finden wir doch Unterschiede, die unsere Vermutung, d a.ss s ich bei unseren Bedingungen der Synthese noch hohere Xe-Fluoride bilden, bestatigen. Wahrend namlich das Verhalt nis F: Xe in d en P raparaten uber die die amer ikanischen Authoren berichteten , zwischen 5,76 und 6 ,0 variiert, ist das Verha l tnis in unseren Praparaten 5,8 bis 6,4

Uber die Synthese von XeF6

Claassen und Mitarb.1 berlichten iiber die Syinthese von XeF4 , R. Hoppe und Mifarb.2 iiber die Synthese von XeF2 • Wir haiben die Synthese VO!!l XeF43 reproduzii.ert und koomten bei der massenspektrometrischen Analyse des Produktes schwache Andeutungen fiir die .Ainwesenheit hoherer Fluoride feststellen

On the Synthesis of and Magnetic Measurements on Xenon Tetrafluoride

Recently the synthesis of XeF4 was reported from the Argonne Nationlll Laborato·ry, and some of its physical properties were given1• In order to obtalin further information on this extraordinarily interesting compound XeF4 was prepared in our laboratory. Siince the details of the synthesis were not available the direct fluorination was performed under pressure at 400°C. The basic .idea was to obtain the maximum possible amount of the product in a small v.ol\u27l.lllle. The p.roduct was identified by mass spectroscopic analysis2 • The X-ray pattern was taken and the magnetic susceptibility was also measured. At present the NMR spectra are al!so under investigatioiil

Metric characteristics of the Self-efficacy Scale: a preliminary study

Prispevek predstavlja koncept samoučinkovitosti, ki se doslej v slovenskem prostoru še ni uporabljal v empiričnih raziskavah s področja psihologije, in analizira izbrane merske značilnosti prevedene in prirejene lestvice posplošene samoučinkovitosti (LSU, avtor Schwarzer). V teoretičnem uvodu je poudarek na samoučinkovitosti v organizacijskem kontekstu, primerjavi samoučinkovitosti s samospoštovanjem in Bandurovi socialno-kognitivni paradigmi. Analize temeljijo na vzorcu 120 študentov, dopolnjujejo pa jih primerjave z vzorcem 15 zaposlenih. Poleg LSU smo uporabili lestvico samoregulacije (prav tako prvič prenešeno v slovenski prostor), standardno lestvico anksioznosti in lestvico samozavesti. Lestvica samoučinkovitosti je analizirana podrobneje - tudi na nivoju posameznih postavk, ostali trije instrumenti pa so obravnavani le kot celote. Zanesljivost LSU z vidika interne konsistentnosti se je pokazala kot ustrezna (α 0,77 za študente oziroma 0,87 za zaposlene). Študija je potrdila sočasno veljavnost lestvice skozi konvergentnost pokazateljev (visoko pozitivno korelacijo s sorodnima lestvicama ter visoko negativno korelacijo z lestvico anksioznosti). V prid konstruktne veljavnosti LSU govori tudi odsotnost razlik v samoučinkovitosti in z njo povezanih osebnostnih lastnostih med skupinami študentov (različnih smeri oziroma letnikov), kakor tudi statistična pomembnost razlik med vzorcema študentov in zaposlenih na vseh uporabljenih lestvicah.The concept of self-efficacy is presented in the paper, which has not been applied yet in empirical psychological research in Slovenia, and selected metric characteristics of the translated and adapted Schwarzer\u27s generalised self-efficacy scale (LSU) are analysed. The introduction focuses on self-efficacy within organisational context, the self-efficacy versus self-esteem issue and the Bandura\u27s socio-cognitive paradigm. The psychometric analyses are based on a sample of 120 undergraduates, supplemented by comparisons with a sample of 15 employees. In addition to the LSU, a self-regulation scale was applied (another adaptation to Slovenian), a standard trait-anxiety scale and a self-confidence scale. The self-efficacy scale is analysed in detail - including the item level, while the other three instruments are only addressed on the scale level. LSU\u27s reliability in terms of internal consistency proved to be sufficient (Cronbach α 0,77 for the students and 0,87 for the employees). Concurrent validity was verified through indicator convergence (a high positive correlation with the two related scales and a high negative correlation with the anxiety scale). Another piece of evidence in favour of construct validity of the LSU is provided by lack of significant differences between distinct groups of students on any of the scales, as well as by significant differences between the students and the employees on all the four scales