A study of light curve variations in eclipsing contact binary stars

Summary in EnglishThe study of light curves of W UMa (W Ursa Majoris type) eclipsing contact binary stars can provide insight into their physical dimensions as well as their evolution. By making use of different data sets, including from the All Sky Automated Survey (ASAS) and the Wide Angle Search for Planets (SuperWASP), light curves were modelled to assess if there is a trend regarding their mass-ratios q and the inclination angles i of these systems in relation to the appearance of the light curves. A selection of stars were also subjected to period variation analysis and the results thereof presented. Period changes that are fore-casted with a degree of certainty are indicative of evolutionary changes in these systems. An area of future study is to analyse amongst others the underlying causes that contribute to the variations observed. To do so requires quality data spanning decades. Results of the analysis of the appearance of light curves with regards to secondary minima in relation to q and i are presented as well as improved periods for a selection of 14 stars by making use of SuperWASP data.GeographyM.Sc. (Astronomy

POSTKOMUNISTIČKE TRANSFORMACIJE: METODOLOGIJA VIŠERAZINSKE ANALIZE

The end of the 20th century witnessed large-scale simultaneous social transformations on the global, regional and country levels. Post-communist transformations whose analysis has been the focus of multiple Russian and foreign scholarly works, take a special place in these processes. The phenomenon seems, however, not to be wholly comprehended, moreover, we can observe something similar to increasing mythology in the evaluation of current events and processes. Therefore, designing the analysis methodology of post-communist transformations turns out to be an extremely topical scientific problem.Koncem 20. stoljeća događale su se sveobuhvatne simultane društvene transformacije na globalnom i regionalnom nivou, kao i na nivou pojedinih država. Posebno mjesto u tim procesima zauzimaju post-komunističke transformacije, analiza kojih se nalazi u fokusu mnogih ruskih i inozemnih znanstvenih radova. No, čini se da fenomen ipak nije u potpunosti shvaćen, štoviše, mogu se primijetiti rastući mitski elementi u procjeni tekućih događaja i procesa. Stoga je stvaranje metodologije za analizu post-komunističkih transformacija izuzetno važan znanstveni zadatak

POSTKOMUNISTIČKE TRANSFORMACIJE: METODOLOGIJA VIŠERAZINSKE ANALIZE

The end of the 20th century witnessed large-scale simultaneous social transformations on the global, regional and country levels. Post-communist transformations whose analysis has been the focus of multiple Russian and foreign scholarly works, take a special place in these processes. The phenomenon seems, however, not to be wholly comprehended, moreover, we can observe something similar to increasing mythology in the evaluation of current events and processes. Therefore, designing the analysis methodology of post-communist transformations turns out to be an extremely topical scientific problem.Koncem 20. stoljeća događale su se sveobuhvatne simultane društvene transformacije na globalnom i regionalnom nivou, kao i na nivou pojedinih država. Posebno mjesto u tim procesima zauzimaju post-komunističke transformacije, analiza kojih se nalazi u fokusu mnogih ruskih i inozemnih znanstvenih radova. No, čini se da fenomen ipak nije u potpunosti shvaćen, štoviše, mogu se primijetiti rastući mitski elementi u procjeni tekućih događaja i procesa. Stoga je stvaranje metodologije za analizu post-komunističkih transformacija izuzetno važan znanstveni zadatak

Comment on τ\tau decay puzzle

We analize the current data on $\tau$-lepton decays and show that they are consistent with the Standard ModelComment: 5 pages, 1 figure (available from de authors), Latex, preprint IFT-P.022/9

Postupci proizvodnje, uzorkovanja i analize deterdženata

U radu su opisani postupci proizvodnje deterdženata u praškastom, kapljevitom, gel i krutom obliku. Istaknuta je važnost uzorkovanja deterdženta u analizi te su izdvojene metode analize tvari prema hrvatskim i svjetskim normama. Opisani su uvjeti stavljanja deterdženata na tržište, opći uvjeti proizvodnje, te prava, dužnosti i ovlasti nadležnih tijela u vezi s deterdžentima kroz nacionalni dokument Pravilnik o deterdžentima, koji je usklađen s Europskom komisijom

O MOGUĆNOSTI ANALIZE ENGLESKIH EGZOCENTRIČNIH SLOŽENICA

In the past two decades, numerous studies have been written on the successful application of metaphor, metonymy and blending in the analysis of idiomatic expressions which traditional linguistic literature treated as semantically unanalysable phenomena, that go against the theory of compositionality (on the nonanalysability of idioms see for example Allen 1986, Cruse 1991, Fraser 1970; on the analysability of idioms see for example Benczes 2002, Gibbs 1994, Lakoff 1987, Kövecses and Szabó 1996). A similar view was adopted for the so-called exocentric compound expressions (for the original definition of endo- and exocentricity see Bloomfield 1933)1. Since the vast majority of English compounds is endocentric (Bloomfield 1933), linguistic literature has a tendency to mention exocentric combinations only peripherally (if they are mentioned at all), and views these constructions as semantically non-transparent (see for example Dirven and Verspoor 1998, Jespersen 1954, Katamba 1993, Levi 1978, Marchand 1960, Selkirk 1982, Spencer 1991). The present paper takes a close look at these much-ignored constructions and claims that the semantic relations that might hold between the modifier and head elements of such compounds are exactly the same as those that exist between the modifier and the head of endocentric compounds (e.g. part–whole; source–result, time–object, etc.). Moreover, “exocentric” or “non-transparent” compounds are just as easily analysable as endocentric ones. With the help of cognitive linguistic “tools” such as metaphor, metonymy and blending among others, their meaning becomes analysable and transparent. Thus there is no need for the traditional distinction between the two categories of semantically endocentric and exocentric compounds: all we are dealing with is a more imaginative word formation process. Therefore I suggest using the term “creative compound” for metaphorical (and/or metonymical) noun–noun combinations.Brojni su radovi napisani u posljednja dva desetljeća o uspješnoj primjeni metafore, metonimije i konceptualne integracije u analizi idiomatskih izraza koje je tradicionalna lingvistička literatura držala pojavama koje se opiru analizi, a koji nisu u skladu s teorijom kompozicionalnosti (o nemogućnosti analize idioma usp. Allen 1986, Cruse 1991, Fraser 1970, a o mogućnostima njihove analize Benczes 2002, Gibbs 1994, Lakoff 1987, Kövecses and Szabó 1996). Slično se pristupalo i tzv. egzocentričnim složenicama (o izvornim definicijama endocentričnosti i egzocentričnosti vidi Bloomfield 1933). Kako je velika većina engleskih složenica endocentrična (Bloomfield 1933), lingvistička je literatura egzocentrične kombinacije spominjala samo uzgred (ako ih se uopće i spominjalo) te ih se držalo semantički netransparentnima (usp. Dirven i Verspoor 1998, Jespersen 1954, Katamba 1993, Levi 1978, Marchand 1960, Selkirk 1982, Spencer 1991). U ovom se prilogu razmatraju te zanemarene konstrukcije te se tvrdi da su semantički odnosi između glave i modifikatora potpuno isti onima kod endocentričnih složenica (napr. dio-cjelina, izvor-rezultat, vrijeme-objekt, itd.). Štoviše, tvrdi se da se “egzocentrične” odnosno “netransparentne” složenice mogu jednako lako analizirati kao i endocentrične. Uz pomoć kognitivnih “alata” poput metafore, metonimije i konceptualne integracije, njihovo značenje postaje transparentno i podložno analizi te stoga nema potrebe za tradicionalnom distinkcijom između semantički endocentričnih i egzocentričnih složenica. Umjesto toga predlažem pojam “kreativna složenica” za metaforičke (i/ili metonimijske) kombinacije tipa imenica + imenica

Non glassy ground-state in a long-range antiferromagnetic frustrated model in the hypercubic cell

We analize the statistical mechanics of a long-range antiferromagnetic model defined on a D-dimensional hypercube, both at zero and finite temperatures. The associated Hamiltonian is derived from a recently proposed complexity measure of Boolean functions, in the context of neural networks learning processes. We show that, depending of the value of D, the system either presents a low temperature antiferromagnetic stable phase or the global antiferromagnetic order disappears at any temperature. In the last case the ground state is an infinitely degenerated non-glassy one, composed by two equal size anti-aligned antiferromagnetic domains. We also present some results for the ferromagnetic version of the model.Comment: 8 pages, 5 figure