Innovations of modern system of vocational guidance in technical high school

© Published under licence by IOP Publishing Ltd. This article is devoted to the description of system of modern innovative forms of vocational guidance in a higher educational institution of a technical profile

Risk-oriented internal control: The essence, management methods at small enterprises

The research topic relevance is inspired by necessity to develop theoretical and methodical provisions on the internal control system, risk-based management at small enterprises and to prove application feasibility, using economic-mathematical methods its implementation. The purpose of this research is to develop theoretical and methodical approaches to internal control system formation in small businesses, generating reliable and relevant information on the commercial organization activities, enabling risks identification. The leading approach to study this problem is situational and systematic in the frame of theory and methodology internal control at small businesses in the risk-based management system, allowing to analyze the impact of various risks on small enterprises activity and to systematize obtained results. According to the study results, there were proved the implementing internal control feasibility at small businesses, presenting the author's systematization and classification of internal and external risks in small companies, identifying organizational and methodological approaches to risk-based internal control development; implemented the adaptation of existing economic-mathematical methods within risk-based internal control at small businesses. The article can be useful for practical and scientific workers in the field of company’s internal control, teachers, postgraduates, undergraduates and students, studying Economics and Management at higher educational institutions. © 2016 Piskunov et al

Representation of gender concepts in the Russian and polish languages

© Medwell Journals, 2015. The study considers the topical issues of the modern conceptology in particular, the being and representation of gender concepts in a language. The study provides the linguo-culturological analysis of paroemias containing concepts falling within the, general conceptual term 'family' mother-in-law, father-in-law, widower, widow (wdowa-wdowiec) in the Russian and Polish languages. The performed linguo-culturological analysis of conceptual terms relating to the general concept 'family' has proved that there is some dialogue between the two Slavic languages and cultures

Complexation of Ni(II) with benzoic, p-methoxybenzoic, and isonicotinic acids hydrazides in aqueous acetonitrile

Solvation and complexation of Ni(II) with benzole (L1), p-methoxybenzoic (L3), and isonicotinic (L) acids hydrazides in water and aqueous acetonitrile were studied. The coordination of acetonitrile with Ni(II) was qualitatively estimated, and the formation constant were determined for the complexes Ni(L1)2+, Ni(L1)2+ 2, Ni(L3)2+, Ni(L3)2+ 2, Ni(HL)3+, NiL2+, NiL(HL)3+, and NiL2+ 2. The effects of dilution, ligand basicity, and ligand solvation on the stability of Ni(II) compounds with hydrazides of benzole acid and its derivatives were demonstrated. The stability of the Ni(II) complexes with isonicotinic acid hydrazide is governed by dehydration of the metal ion, decrease in the donor power of the coordinating hydrazide fragment on protonation of the pyridine substituent L, formation of the intracomplex hydrogen bond between the protonated and deprotonated pyridine nitrogen atoms in NiL(HL)3+, and stacking interaction between the heterocycles in NiL2+ 2

Nickel(II) Complexing with p-Chlorobenzoic and Nicotinic Hydrazides in Water-Dimethyl Sulfoxide

Solvation and complex formation of nickel(II) with p-chlorobenzoic (L') and isonicotinic (L) hydrazides in water and water-dimethyl sulfoxide (DMSO) mixtures were studied by spectrophotometry and 1H NMR spectroscopy. The spin-spin relaxation rate of H2O or DMSO protons was analyzed as a function of composition of the solvent. On the basis of this analysis, a new procedure was developed for determining the mean coordination number of water molecules and DMSO in solvato complexes of nickel(II). Deviation of the fraction of coordinated DMSO molecules from the molar DMSO concentration in the solution is understood as a decrease in the bulk donor ability of water starting at a certain DMSO concentration. The formation constants were determined for the species Ni(L')2+, Ni(L')2+ 2, Ni(HL)3+, NiL2+, NiL(HL)3+, and NiL2+ 2 over the range of DMSO mole fractions of 0-0.68. The following factors in the stability of complexes were found: dehydration and steric repulsion of the ligands, a decrease in the donor ability of the coordinated hydrazine moiety upon protonation of the pyridine substituent L, the formation of an intracomplex hydrogen bond between the protonated and nonprotonated pyridine nitrogen atoms in NiL(HL)3+, and stacking interaction between the heterocycles in NiL2+ 2

Solvation and complex formation of nickel(II) with benzoic, p-chlorobenzoic, and p-methoxybenzoic hydrazides in aqueous-dioxane media

Solvation and complex formation of nickel(II) with benzoic, p-chlorobenzoic, and p-methoxy-benzoic hydrazides in aqueous-dioxane media were studied. The mean coordination numbers of water and 1,4-dioxane in Ni(II) solvation complexes, the formation constants of mono- and biscomplexes of nickel(II) of the listed hydrazides at dioxane contents of 0-0.65 mole fraction, as well as the free energies of transfer of the ligands from water to aqueous-dioxane solvents were determined. An important role the basicity and solvation of the ligands play in te stability of Ni(II) complexes with benzoic hydrazides was demonstrated

Composition, stability, and structure of Cu(II), Ni(II), and Co(II) complexes with adipic acid dihydrazide in aqueous and aqueous-ethanol solutions

Solvation and complexation of Cu(II), Ni(II), and Co(II) with adipic acid dihydrazide (L) in aqueous and aqueous-ethanol solutions (ethanol mole fraction 0.07-0.68) were studied by spectrophotometry. The formation constants of the species M(LH)3+, ML2+, M2L4+ (μ = Cu2+, Ni2+, Co2+), and also M2L 2 4+ and ML 2 2+ (μ = Cu 2+, Ni2+) were determined. With Cu(II), the complexes Cu(LH) 2 4+ , CuL(LH)3+, and Cu 2L(LH)5+ were also detected and characterized. Evidence is given for the hydrazide coordination mode: tridentate in ML2+, bidentate in M(LH)3+ and ML 2 2+ , and tetradentate in M2L4+ and M2L 2 4+ . The ligand exchange reactions involving CuL2+, Cu(LH)3+, Cu(LH) 2 4+ , CuL(LH)3+, CuL 2 2+ , and Cu2L(LH)5+ in aqueous solutions of Cu(II) were revealed and kinetically characterized by nuclear magnetic relaxation. The heretofore unknown rate constants of formation of these complexes were calculated from the thermodynamic and kinetic parameters. Factors controlling the rate constants of the complex formation and chemical exchange are discussed. © Pleiades Publishing, Inc., 2006

The Role of Social Support for Substitute Families in the Prevention of Social Orphan hood

The article considers the possibilities of social support of substitute families in the prevention of social orphan hood and the best interests of the child.В статье рассматриваются возможности социального сопровождения замещающих семей в профилактике социального сиротства и наилучшего обеспечения интересов ребенка

CP and related phenomena in the context of Stellar Evolution

We review the interaction in intermediate and high mass stars between their evolution and magnetic and chemical properties. We describe the theory of Ap-star `fossil' fields, before touching on the expected secular diffusive processes which give rise to evolution of the field. We then present recent results from a spectropolarimetric survey of Herbig Ae/Be stars, showing that magnetic fields of the kind seen on the main-sequence already exist during the pre-main sequence phase, in agreement with fossil field theory, and that the origin of the slow rotation of Ap/Bp stars also lies early in the pre-main sequence evolution; we also present results confirming a lack of stars with fields below a few hundred gauss. We then seek which macroscopic motions compete with atomic diffusion in determining the surface abundances of AmFm stars. While turbulent transport and mass loss, in competition with atomic diffusion, are both able to explain observed surface abundances, the interior abundance distribution is different enough to potentially lead to a test using asterosismology. Finally we review progress on the turbulence-driving and mixing processes in stellar radiative zones.Comment: Proceedings of IAU GA in Rio, JD4 on Ap stars; 10 pages, 7 figure

Complexation and ligand exchange in aqueous of Cu(II) and Ni(II) with hydrazides of some aromatic acids

Solvation and complexation of Cu(II) and Ni(II) with benzoic (L′), p-methoxybenzoic (L″), and isonicotinic (L) acid hydrazides in aqueous-ethanol solutions (ethanol mole fraction 0.07-0.68) were studied by pH-metry, spectrophotometry, and nuclear magnetic relaxation. The formation constants of the species M(L′)2+, M(L′) 2 2+ , M(L″)2+, M(L″) 2 2+ , M(LH)3+, M(L)2+, M(L)(LH)3+, and M(L) 2 2+ , where M = Cu2+ and Ni2+, were determined. With isonicotinic acid hydrazide, a change in the coordination mode was observed in an isomer of Cu(L) 2 2+ , with one of the ligands coordinating in the bidentate fashion, and the other, in the monodentate fashion via the pyridine nitrogen atom. The suggested structures were confirmed by analysis of the parameters of the ESR and electronic absorption spectra of the complexes. The rate constants of ligand exchange and formation of the complexes Cu(L′)2+, Cu(L′) 2 2+ , Cu(L″)2+, and Cu(L″) 2 2+ in aqueous solutions were determined from nuclear magnetic relaxation measurements; the reactions occur by the associative mechanism. A cyclic process of reduction of Cu(II) to colloidal copper in the presence of L″ and atmospheric oxygen is described. © Pleiades Publishing, Inc., 2006