Differential Inequalities and Univalent Functions

Let ${\mathcal M}$ be the class of analytic functions in the unit disk \ID with the normalization $f(0)=f'(0)-1=0$, and satisfying the condition \left |z^2\left (\frac{z}{f(z)}\right )''+ f'(z)\left(\frac{z}{f(z)} \right)^{2}-1\right |\leq 1, \quad z\in \ID. Functions in $\mathcal{M}$ are known to be univalent in \ID. In this paper, it is shown that the harmonic mean of two functions in ${\mathcal M}$ are closed, that is, it belongs again to ${\mathcal M}$. This result also holds for other related classes of normalized univalent functions. A number of new examples of functions in $\mathcal{M}$ are shown to be starlike in \ID. However we conjecture that functions in $\mathcal{M}$ are not necessarily starlike, as apparently supported by other examples.Comment: 10 pages; To appear in Lobachevskii Journal of Mathematic

Development of polytoxicomania in function of defense from psychoticism

Introduction. Polytoxicomanic proportions in subpopulations of youth have been growing steadily in recent decades, and this trend is pan-continental. Psychoticism is a psychological construct that assumes special basic dimensions of personality disintegration and cognitive functions. Psychoticism may, in general, be the basis of pathological functioning of youth and influence the patterns of thought, feelings and actions that cause dysfunction. Objective. The aim of this study was to determine the distribution of basic dimensions of psychoticism for commitment of youth to abuse psychoactive substances (PAS) in order to reduce disturbing intrapsychic experiences or manifestation of psychotic symptoms. Methods. For the purpose of this study, two groups of respondents were formed, balanced by age, gender and family structure of origin (at least one parent alive). The study applied a DELTA-9 instrument for assessment of cognitive disintegration in function of establishing psychoticism and its operationalization. The obtained results were statistically analyzed. From the parameters of descriptive statistics, the arithmetic mean was calculated with measures of dispersion. A cross-tabular analysis of variables tested was performed, as well as statistical significance with Pearson’s χ2-test, and analysis of variance. Results. Age structure and gender are approximately represented in the group of polytoximaniacs and the control group. Testing did not confirm the statistically significant difference (p>0.5). Statistical methodology established that they significantly differed in most variables of psychoticism, polytoxicomaniacs compared with a control group of respondents. Testing confirmed a high statistical significance of differences of variables of psychoticism in the group of respondents for p<0.001 to p<0.01. Conclusion. A statistically significant representation of the dimension of psychoticism in the polytoxicomaniac group was established. The presence of factors concerning common executive dysfunction was emphasized

Impact of the process of polymerization of polyol and toluen diisocyanate on the environoment

The aim of this study was to investigate the impact of the process of polymerization of polyiol and tolyendiisocyanate on the environoment. Toluene diisocyanates are important industryal intermediates used in conjunction with polyether and polyester polyols as coreactants polyurethane foams, paints, varnishes, elasomers and coatings. This presentation summarizes existing information on the release and behavior of the process of polymerization of polyol and toluen diisocyanate on the environment. A major reaction of TDI in the environoment is formation of solid inert polyureas from reaction with water. In use, TDI is reacted with polyols to form many different polyurethane products. Polyurethanes have been show to be stable in the environment and in disposal have no adverse impact on municipal waste handling processes, landfills or incineration.Physical chemistry 2006 : 8th international conference on fundamental and applied aspects of physical chemistry; Belgrade (Serbia); 26-29 September 200

Geostatistical modeling of geochemical variables in 3D

Geostatistical mapping of soil properties in 3D refers to the application of geostatistical methods to the soil data in order to produce maps of soil properties at different depths. Through two separate studies, this thesis elaborates on two different approaches for 3D soil mapping. At first, the well established Spline-Than-Krige approach for the mapping of soil pollutants atmospherically deposited from the copper smelting plant, was used. In the absence of the monitoring data, which can be used for a detailed characterization of the plume spreading process, this study was confined to the consideration of terrain exposure to explain spatial trend in arsenic distribution at different depths. This study aims to explore the extent to which the commonly available information, such as the prevailing wind direction, or the location of the source of pollution, in combination with the digital terrain model, can be used to quantify the terrain exposure, and hence to improve the spatial prediction of the arsenic concentration at several soil depths. Next, the innovative geostatistical approach to 3D mapping of soil properties, based on soil profile data, was proposed. It provides the semi-automatic way for 3D modeling of soil variables, prediction over the regular grids (rasters) and also the evaluation of prediction accuracy. Methodologically, this approach operates within the 3D regression kriging framework. 3D trend model is conceptualized as hierarchical or non-hierarchical linear interaction model. This means that the model includes the interactions between the spatial covariates and depth in the hiearchial or non-hierarchial manner. The trend modeling is based on the application of the penalized regression technique, lasso. The lasso uses a specific regularization penalty in a fitting procedure to enable the efficient parameter estimation and variable selection (including interaction terms) at the same time...Geostatistiˇcko kartiranje zemljišta u 3D odnosi se na primenu geostatistiˇckih metoda na zemljišnim podacima u cilju izrade karata zemljišnih karakteristika jednog podruˇcja, koje se odnose na razliˇcite dubine zemljišta. U okviru dve nezavisne studije, ova doktorska disertacija razmatra dva razliˇcita pristupa geostatistiˇckog modeliranja zemljišta u 3D. U okviru prve studije, "Spline-Than-Krige" metod je koriš´cen za kartiranje koncentracije arsena u zemljištu, u blizini Rudarsko-topioniˇcarskog basena Bor, na tri razliˇcite dubine (0-5 cm, 5-15 cm i 15-30 cm). Dugogodišnje emitovanje nepreˇciš´cenih materija iz topionice rudnika u atmosferu, dovelo je do zagadjenja zemljišta u okolini, taloženjem štetnih materija nošenih vetrom. U odsustvu podataka kojima bi se detaljnije mogao opisati proces raspršivanja štetnih materija, ova studija se ograniˇcila na analizu izloženosti terena uticaju vetra, a time i procesu zagad¯enja. Predstavljen je inovativan pristup kvantifikaciji izloženosti terena izvoru zagad¯enja. Na osnovu opšte dostupnih podataka, kreirano je nekoliko parametara kojima se kvantifikuje geometrijska i topografska izloženost svake tacˇke terena izvoru zagad¯enja. Tako kreirani parametri, iskorišc´eni su za opisivanje prostornog trenda koncentracije arsena na tri razliˇcite dubine. Definisani trendovi, koriš´ceni su u okviru regresionog kriginga, za prostornu predikciju. Na taj naˇcin pokušalo se odgovoriti na pitanje, u kojoj meri, opšte dostupni podaci, kao što su pravac dominantnog vetra ili poznavanje taˇcne lokacije izvora zagadjenja u kombinaciji sa digitalnim modelom terena, mogu biti iskoriš´ceni da bi se unapredila preciznost prostorne predikcije zemljišnih zagadjivaˇca, kako na površinskim slojevima tako i na ve´cim dubinama..

Microwave - Assisted Synthesis and Physicochemical Characterization of Polyaniline

Unapređena mikrotalasna sinteza (UMS) polianilina (PANI) je vršena korišćenjem (a) kalijum jodata (KJO3) i amonijum peroksidisulfat (APS) kao oksidacionih sredstava u vodenom rastvoru 1,25 M hlorovodonične kiseline (HCl) na različitim primenjenim snagama mikrotalasa; (b) KJO3 kao oksidacionog sredstva u vodenom rastvoru HCl različitih koncetracija sa primenjenom snagom mikrotalasa od 8 i 93 W, (c) APS kao oksidacionog sredstva u vodenom rastvoru sumporne kiseline (H2SO4) različitih koncentracija sa primenjenom snagom mikrotalasa od 93 W; i (d) APS kao oksidacionog sredstva u 0,4 M sirćetnoj kiselini (CH3COOH) i 0,2 M amonijum hidroksidu (NH4OH) sa primenjenom snagom mikrotalasa od 8 i 93 W. Sinteze su vršene na konstantnoj temperaturi u reakcionom sistemu od 24 ± 1 °C...The enhanced microwave synthesis (EMS) of polyaniline (PANI) is performed using (a) potassium iodate (KJO3) and ammonium persulfate (APS) as oxidizing agents in aqueous 1,25 M hydrochloric acid (HCl) at different applied microwave power levels; (b) KJO3 as oxidizing agent in different concentrations of HCl at 8 and 93 W applied microwave power, (c) APS as oxidizing agent in different concentrations of aqueous sulfuric acid (H2SO4) at 93 W applied microwave power; and (d) APS as oxidizing agent in 0,4 M acetic acid (CH3COOH) and 0,2 M ammonium hydroxide (NH4OH) at 8 and 93 W applied microwave power. The syntheses were performed at a constant temperature of 24 ± 1 °C..

Analysis of the features of hunting grounds in Serbia

Covering almost the entire territory of Serbia, hunting grounds occupy a unique role not only in the country's hunting practices but also in game management and wildlife conservation. Therefore, it is useful to be acquainted with their characteristics in order to manage game in a sustainable manner. Nevertheless, there has not been a proper study on the condition of hunting grounds in Serbia since the country's transition process, which reshaped the hunting sector as a whole. The purpose of this research is to identify and analyze the features of hunting grounds in Serbia in order to establish a base for future scientific research and appropriate decision making. The research results were obtained on the basis of the data on 272 hunting grounds in Serbia, collated during the hunting year of 2012/2013 and compared with the last comprehensive hunting analysis at the national level in 2001. The analysis suggests that the regal hunting system is still predominant in Serbia. The quality of hunting grounds has been enhanced to a certain extent, although there are yet some challenges which pose a threat to sustainable management such as the oversized hunting areas, lack of employees and poor financial condition.Lovišta u Srbiji imaju jedinstvenu ulogu, pošto se prostiru preko skoro celokupne državne teritorije i služe na samo za lov, nego i za gazdovanje divljači i zaštitu divljih životinja. Zbog toga je korisno poznavati njihove osobine da bi se moglo gazdovati divljači na održiv način. Uprkos svojoj ulozi, od tranzicionih promena u Srbiji koje su preoblikovale i lovstvo, nije bilo odgovarajuće studije koja bi na nacionalnom nivou utvrdila stanje lovišta. Cilj ovog istraživanja je da analizira osobine lovišta u Srbiji i identifikuje njihove karakteristike radi uspostavljanja osnove za buduća naučna istraživanja i odgovarajuće donošenje odluka. Rezultati ovog istraživanja su dobijeni na osnovu podataka prikupljenih iz 272 lovišta u Srbiji za lovnu 2012/2013 godinu i upoređeni sa poslednjom sveobuhvatnom analizom lovstva na nacionalnom nivou iz 2001. godine. Analiza ukazuje da je u Srbiji i dalje dominantan regalni sistem gazdovanja. Kvalitet lovišta je donekle poboljšan, iako i dalje postoje izazovi koji ugrožavaju održivo gazdovanje, kao što su prevelike površine lovišta, nedovoljan broj zaposlenih i teška finansijska situacija

TEMPUS Project Quality Plan (PQP) - An important management tool of project coordinator

Nowadays project management is becoming increasingly important. Project management is responsible for securing and improving the higher education outcomes defined by an approved TEMPUS project proposal. Appropriate design, definition, plan and successful implementaion of the project are supported by an adequate project quality plan (PQP). PQP is a powerful management tool that enables the project coordinator and project team to implement all of the planned activities successfully and with appropriate quality within the agreed deadlines and budget. This paper provides an example of a well-designed PQP. The given example provides the required quality of all activities and results (products) of the TEMPUS project that make the project sustainable in the long-term