Quantum-secured blockchain

Blockchain is a distributed database which is cryptographically protected against malicious modifications. While promising for a wide range of applications, current blockchain platforms rely on digital signatures, which are vulnerable to attacks by means of quantum computers. The same, albeit to a lesser extent, applies to cryptographic hash functions that are used in preparing new blocks, so parties with access to quantum computation would have unfair advantage in procuring mining rewards. Here we propose a possible solution to the quantum era blockchain challenge and report an experimental realization of a quantum-safe blockchain platform that utilizes quantum key distribution across an urban fiber network for information-theoretically secure authentication. These results address important questions about realizability and scalability of quantum-safe blockchains for commercial and governmental applications.Comment: 7 pages, 2 figures; published versio

Thermography of flame during diesel fuel combustion with steam gasification

The paper represents a study concerning the combustion of liquid hydrocarbon fuel in a perspective burner device with the controlled forced supply of overheated steam into the combustion zone, using diesel fuel. The thermal imaging measurements are conducted for the outer flame of the burner device in the wide range of regime parameters (flow rate and temperature of steam). A thermal imaging camera (FLIR, JADE J530SB) is used in the experiments. The effective emissivity coefficient of flame is obtained versus the flow rate of steam supplied. The steam parameters are found to influence on the temperature in the outer flame of the burner device

Cultural Imperatives of the Modern Economy

В статье рассмотрена тесная взаимосвязь культуры и экономики, которая претерпевала существенные изменения на протяжении долгого времени. Показано, что в современном мире отношения между культурой и экономикой вновь сближаются. Многие ученые и экономисты считают, что от успеха этого сближения во многом зависит выживание человечества на планете.The article examines the close relationship between culture and the economy, which has undergone significant changes over time. It is shown that in the modern world, the relationship between culture and the economy is again approaching. Many scientists and economists believe that the success of this convergence largely depends on the survival of humanity on the planet

Cultural Heritage: Ideas of Russian Cosmists

The article considers the evolutionary ideas of Russian cosmologists who make up the cultural and scientific heritage of Russia: the relationship of man and the Cosmos; man is part of the energy structure of the Cosmos; the influence of phenomena occurring in Space on all processes on Earth; the energy of thought; the continuity of life as a cosmic phenomenon.В статье рассмотрены эволюционные идеи русских ученых-космистов, составляющие культурное и научное наследие России: взаимосвязь человека и Космоса; человек – часть энергетической структуры Космоса; влияние происходящих в Космосе явлений на все процессы на Земле; энергия мысли; непрерывность жизни как космическое явление

NBIC-ТЕХНОЛОГИИ ПРЕОДОЛЕВАЮТ ЭКОНОМИЧЕСКУЮ ДЕПРЕССИЮ

This paper is reflecting results of forecasting scenario of economic growth and shown that NBIC-technologies, due to the powerful synergetic effect generating by a mutual convergence of nano-, bio-, info- and cognitive technologies, will give strong acceleration pace of technological progress, which exceeded the rate achieved in the previous upward wave of 5th great Kondratieff ’s economic cycle (1982–2006). On the base of theUSAeconomy data, the results of forecasting shows that the rate of technological progress will increase from 2,2% in 1980 to 3,5% in the 2030 s. В работе прогнозируется сценарий экономического роста и показано, что NBIC-технологии, благодаря мощному синергетическому эффекту, порождаемому взаимной конвергенцией нано-, био-, инфо- и когнитивных технологий, дадут сильное ускорение темпам технического прогресса, которые превысят темпы достигнутые на повышательной волне предыдущего 5-го большого экономического цикла Кондратьева (1982–2006 гг.). На примере экономики США показано, что темпы технического прогресса возрастут с 2,2% в 1980-е годы до 3,5% в 2030-е годы

Validation of Agent-Based Models in Economics and Finance

Since the survey by Windrum et al. (Journal of Artificial Societies and Social Simulation 10:8, 2007), research on empirical validation of agent-based models in economics has made substantial advances, thanks to a constant flow of high-quality contributions. This Chapter attempts to take stock of such recent literature to offer an updated critical review of the existing validation techniques. We sketch a simple theoretical framework that conceptualizes existing validation approaches, which we examine along three different dimensions: (i) comparison between artificial and real-world data; (ii) calibration and estimation of model parameters; and (iii) parameter space exploration. Finally, we discuss open issues in the field of ABM validation and estimation. In particular, we argue that more research efforts should be devoted toward advancing hypothesis testing in ABM, with specific emphasis on model stationarity and ergodicity