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The purpose of this paper was to reveal the possible changes in membrane physical parameters, such as surface charge, ξ-potential and molecular interactions of membrane components due to the in vitro and in vivo influences of ESF.

The in vitro and in vivo (one hour) influences of 200 kV/m external electrostatic field (ESF) on the erythrocyte membranes of white outbred rats were investigated by spectrofluorometric, spectral and electrophoretic methods.

It was shown that the in vivo influence of ESF leads to the intermolecular reconstructions and decrease of the positive charged groups in membrane surface layer. At the same time, the increases of the negative charged groups of membrane proteins after the field influence, is revealed. The charge redistribution in membranes due to the in vitro influence of ESF is observed.

The analysis of literature data and generalization of data obtained allow us concluding that in parallel with the polarization of lipid component of bilayer the changes in the structural state of membrane proteins take place due to the ESF influence on the erythrocyte membranes. These changes can be the reason and/or the result of the ESF induced redistribution of membrane charge.

The purpose of this paper is to investigate the in vitro influence of 200 kV/m electrostatic fields (ESF) on the microviscosity, viscosity and polarity of rat erythrocyte membranes for revealing the possible changes in lipid-protein interactions due to the field influence.

The investigation of the parameters of erythrocyte membranes and their ghosts, particularly, their microviscosity, the amount and immersion degree of membrane proteins in lipid bilayer, polarity in depth of membrane and its viscosity carried out by the spectrofluorimetric method using the hydrophobic fluorescent probe pyrene.

The carried out investigations shown that the in vitro influence of ESF changes membrane microviscosity, the quantity of membrane peripheral proteins and their immersion degree in the lipid bilayer, if the ghosts have prepared from erythrocytes previously exposed in the field. The analysis of the same parameters for previously prepared erythrocyte ghosts exposed to the 200 kV/m ESF during an hour did not reveal any changes.

Data obtained and their comparison with the results of the previous works allow authors to conclude that the in vitro influence of ESF leads to the changes in the lipid-protein interactions in erythrocyte membranes.

The mixed unsteady problem of stress intensity coefficients calculations near edge of rigid punch acted on elastic halfplane is solved analytically and numerically. The obtained tables are important to clarify possibility of fracture of material of halfplane for any given boundary displacement of punch, which is realized by placing of calculated stress intensity coefficients in known yielding conditions. The solution of this boundary value problem, when on left part of boundary of halfplane stresses are equal to zero, and on right one are given displacements, is solved by method of integral transformations and solution of second order Wienner‐Hopf system. The transformed Hilbert problem has discontinuous on infinity matrix, which is improved and for new continuous coefficient solution is brought to Fredholm system, the last one is solved numerically. Furthermore are carried out inverse integral transformations, solutions for stresses under punch are brought to effective Smirnov‐Sobolev form in one quadrature, which is calculated numerically.

The purposes of this paper are to provide a new framework for the (re)assessment of North-South relations, with a specific focus on North-South preferential trade agreements (PTAs); advance a new mechanism of how first-order, i.e. Southern countries’ first, North-South PTAs can affect the outcomes of second-order, i.e. Southern countries’ subsequent, North-South PTA negotiations; and re-examine the effects of North-South power asymmetries on the outcomes of North-South PTA negotiations.

The paper focuses on how North-South power asymmetries affect the outcomes of North-South PTA negotiations. It introduces the concept of “first-order” and “second-order” North-South PTAs to show that the “order” of an agreement can be a crucial factor in PTA negotiations. The claims of the paper are also supported by primary data obtained through the author’s personal interviews with European Union and USA trade officials and policy-makers (see Appendix).

The paper advances a new theoretical framework that takes a longer-term view on North-South trade relations, whereby, against the backdrop of the proliferating PTAs, first-order North-South agreements can raise the bargaining powers of Southern countries during subsequent North-South PTA negotiations, with strong implications for both developed and developing countries.

The paper is largely theoretical. A systematic empirical study of North-South PTAs will be required to validate or refute the theoretical framework advanced in this paper.

The paper introduces a new variable, namely the “order” of an agreement, which affects the logic of North-South PTA negotiations. Hence, the paper sets out a new theoretical framework that allows for a more accurate assessment of North-South power asymmetries and their effects on the outcomes of North-South PTA negotiations.

The free bending vibrations of magnetoelastic cylindrical shell in axial magnetic field are considered. The solution is carried out by developed for elastic plates by V. Novatsky exact space method which is applied by ourselves to solution of magnetoelasticity equations without any hypothesis. Obtained by means of exact solution dispersion relation between frequency and wave number of vibration of shell is investigated numerically and obtained tables for real part of frequency with respect to wave, number and field are compared with those obtained by averaged treatment based on Kirkhoff hypothesis. The results are quite different which shows that in contrast to the elastic bending vibrations for magnetoelastic plates and shells mentioned hypothesis are not applicable.

The study investigates the effect of political instability and employee tenure security on the performance of firms in middle-income economies (MIEs) after controlling for the influence of corruption, international quality certification, external auditor services and firm age. It examines whether ownership and sector effects matter in the explored relationships.

The study adopts the generalized method of moments estimator and collects firm-level cross-sectional data from 77 MIEs.

The evidence shows that political uncertainty, employee tenure security and firm age negatively impact firm performance. Also, external quality assurance mainly improves firm performance. Additionally, foreign-owned firms benefit from corruption more than their domestic counterparts. Moreover, there are ownership and sector effects in the firm performance drivers.

The findings suggest the need for MIE firm managers to implement policies and programs to improve permanent employees' efficiency, commitment and honesty. Policy makers and political actors must work toward a stable political environment in MIEs. The policy must also focus on at least minimizing corruption.

The study shows the contributions of employee tenure security, political instability and corruption to the performance of MIE firms. It documents sector and ownership effects in the factors influencing firm performance.

The purpose of this paper is to survey bank credit managers and analysts in Mozambique regarding their attitude toward firm diversification.

Forty-five credit managers and analysts from 23 banks in Mozambique were surveyed about their views on diversification and diversified firms. Questionnaires were used. Data were analyzed using chi-square test and binomial test.

Credit analysts and managers in Mozambique have a generally positive attitude toward diversification. This is mainly due to the coinsurance effects and stability of cash flows that diversification could provide. They, however, prefer moderately diversified to highly diversified firms and related to unrelated diversified firms. This is a puzzle, given the expectation that greater unrelated diversification is better able to provide coinsurance.

The study provides information that is useful for understanding the diversification–cost of capital relationship and could help corporate managers in making capital structure decisions.

Previous researchers have not studied the attitude of credit managers/analysts toward diversification in Mozambique using the survey approach. The study contributes to the literature on diversification and access to external finance, the diversification discount and cash holding behavior of firms.

Whereas the majority of research explores the direct relationship between quality management practices and firm operational performance using data on developed economies, this paper asserts that the effect of quality management practices on firm operational performance needs to be evaluated with reference to the contingency approach, especially in developing countries. Therefore, the authors empirically test whether competitive intensity moderates the relationship between quality management practices and inventory management process.

The authors employ a fixed-effect model on data from more than 7,000 observations operating in 27 Eastern and Central European countries.

The findings reveal that the adoption of quality management practices decreases inventory days only in a highly competitive market. Additionally, the results indicate that this effect is changing when distinguishing between countries and sectors.

This study advances research on quality management practices by emphasizing the importance of contingency and institutional approach.

Although temporary work arrangements play a strategically important role in contemporary economic development, its influence on firm performance has remained elusive. In our work we measure firm performance from the systematic perspective, including both innovation and financial performance. Therefore, the purpose of this study is to test a model that specifies the influence of temporary work arrangements on the two indicators of firm performance, namely, innovation and sales.

This research is based on the Business Environment and Enterprise Performance Survey (BEEPS, 2009) created by the European Bank for Reconstruction and Development and the World Bank. As the relationship between temporary workers and firm performance could be contingent on institutional setting, we divide our sample in three country groups: European Union (EU), European countries outside the European Union (non-EU) and the Commonwealth of Independent States (CIS) countries. Furthermore, we analyze the actual question on all three groups of countries separately.

Findings provide support for the positive relationship between the percentage of temporary workers and innovation performance. On the other hand, the evidence reveals a negative link between the percentage of temporary workers and financial performance measured by sales. Taking into account country-specific effects, the results remain negative when examining the influence of the percentage of temporary workers on the financial performance measured by sales for all three country groups (EU, non-EU and CIS countries). However, the positive and significant effect of the share of temporary workers on innovation performance holds only for non-EU and CIS countries but is not observed for EU countries.

Given the importance of temporary work arrangements in terms of a systematic approach in contemporary business, policymakers should continue to work on improving their status to overcome potential negative outcomes related to the temporary workers’ engagement. In addition, managers of the firms should be aware that temporary workers could be a valuable source of innovation; however, they could hamper other aspects of firm performance. Therefore, they should be cautious when hiring temporary workers and find the “best balance” between permanent and temporary workers.

The obtained findings highlight the importance of performance context systematic approach in studying the impact of temporary workers and firm performance. Based on the obtained findings, we may suggest that knowledge and creativity accumulation through temporary workers’ engagement is beneficial for innovation performance improvement. Conversely, long-lasting labour engagement is necessary for financial performance improvement.

This study aims to develop a model of corruption that measures the impact of sports corruption on organizational outcomes (i.e. win difference and attendance) and the mediating role of institutional reputation. How the form and extent of the corruption impacted these organizational outcomes was also examined.

Archival data were collected and then structural equation modeling (i.e. path analysis) was used to analyze the model and estimate the parameters.

The model was a good fit. The extent of the violation served as an antecedent to sanctions and institutional reputation mediated the relationship between the extent of the violation and organizational outcomes. A weak but negative correlation between sanctions and institutional reputation was also found.

Rather than seeking to prevent specific forms of corruption carried out by individuals, managers should consider developing and implementing reform interventions that concentrate on eliminating corrupt networks (e.g. a group of interrelated individuals that abuse their power for private or public gain) who facilitate systematic malfeasance acts.

The study is the first to operationalize the extent and form of corrupt acts and measure their impact on organizational outcomes. The results demonstrate how different variables interact to determine the effects on organizational outcomes.