Two-dimensional (2-D) discrete systems with periodic coefficients are considered for stability. These systems are called periodically shift variant (PSV) digital filters and have many applications in signal processing that include the filtering of 2-D signals with cyclostationary noise, scrambling of digital images, and implementation of multirate filter banks. In this paper, the filters are fo...

We propose a simple model of inter-bank borrowing and lending where the evolution of the logmonetary reserves of N banks is described by a system of diffusion processes coupled through their drifts in such a way that stability of the system depends on the rate of inter-bank borrowing and lending. Systemic risk is characterized by a large number of banks reaching a default threshold by a given t...

Seed banks play a crucial role in arid plant communities because they confer stability and longterm persistence. However, seed banks have high temporal and spatial variability, with dramatic changes in density and composition. The aim of this study was to test whether seasonal change affected seed bank community structure and spatial pattern. Moreover, we wanted to know if the effect driven by ...

Many audio applications rely on filter banks (FBs) to analyze, process, and re-synthesize sounds. For these applications, an important property of the analysis–synthesis system is the reconstruction error; it has to be minimized to avoid audible artifacts. Other advantageous properties include stability and low redundancy. To exploit some aspects of auditory perception in the signal chain, some...

The past decade has been a time of unparalleled stability for the UK economy. It is more than twelve years since the United Kingdom experienced a single quarter of negative GDP growth. Consumer spending, investment and output have all shown a degree of stability over the past ten years which is unmatched in any decade since the war indeed in the twentieth century. Inflation has been impressivel...

Under the new Basel III banking regulations, a non-risk based leverage ratio will be introduced alongside the risk-based capital requirement. This move away from a solely risk-based capital framework has raised some concern of increased bank risk-taking; potentially offsetting any benefits from requiring highly leveraged banks to hold more capital. We address exactly this tradeoff between addit...

Theory makes ambiguous predictions about the relationship between market structure and competitiveness of the banking system and banking sector stability. Empirical studies focusing on individual countries provide similarly ambiguous results, while cross-country studies point mostly to a positive relationship between competition and stability in the banking system. Where liberalization and unfe...

The article investigates the role of bank capital in financing reproduction processes and increase of economic growth indicators, considers the essence of the concept of “bank capitalization”, determines the structure and main sources of bank capital increase. Taking into account the fact that Ukraine and Poland have similar vectors of economic development, the current practices of increasing t...

Riparian vegetation is known to exert a number of mechanical and hydrologic controls on bank stability. In particular, plant roots provide mechanical reinforcement to a soil matrix due to the different responses of soils and roots to stress. Root reinforcement is largely a function of the strength of the roots crossing potential shear planes, and the number and diameter of such roots. However, ...