In the theory of algorithmic randomness, several notions of random sequence are defined via a game-theoretic approach, and the notions that received most attention are perhaps Martin-Löf randomness and computable randomness. The latter notion was introduced by Schnorr and is rather natural: an infinite binary sequence is computably random if no total computable strategy succeeds on it by bettin...

Enzymatic extraction methods were evaluated with classical extraction approaches for the determination of arsenic in food. The extraction efficiency for total arsenic was determined by analysing CRM materials DORM-3 fish protein, NIES 106 rice flour and GBW10015 spinach. These were compared with total arsenic concentration determined using microwave-assisted acid digestion and ICP-MS. The total...

Structural strategies have been adopted by many developing countries to reduce the income/technology gap between them and advanced countries. Results have been mixed, however; most countries have failed, but a few have succeeded, newly industrialized economies (NIEs) in particular. Lin (2003) divides the structural strategies into two types: the Comparative-Advantage-Defying (CAD) strategy foll...

The article is devoted to the methodological approach management of economic security a construction company. It determined that system company based on principles, methods and tools development implementation decisions related protecting interests from inter-nal external threats. revealed dynamics number enterprises in Ukraine for period 2016-2020 has positive dynamic growth. compa-nies city K...

This work assesses the use of modified natural natrolite zeolite as an adsorptive material for the separation and preconcentration of trace amounts of ions. In this work we investigated the potential of modified natural natrolite zeolite for the simultaneous separation and preconcentration of trace amounts of copper and zinc ions. We have developed a simple, rapid, selective, sensitive and econ...