Roughness of dichotomy for the interconnected system of operator-differential equations

The paper is devoted to obtaining conditions for the roughness of dichotomy in the Banach spaces. Deep analysis of the well known papers was considered. The main results also works for the case of unbounded operators

Дозиметр ультрафиолетового излучения

Розглянуто проблему, пов'язану з впливом ультрафіолетового (УФ) випромінювання Сонця на організм людини. Описано особливості розробки і експлуатації вітчизняного портативного дозиметра УФ-випромінювання ФС-01.Considered problem connected with the impact of Sun ultraviolet (UV) radiating on the human organism. Described particularities of development and usages domestic portable sensor of UV-radiating ФС-01.Рассмотрена проблема, связанная с воздействием ультрафиолетового (УФ) излучения Солнца на организм человека. Описаны особенности разработки и эксплуатации отечественного портативного дозиметра УФ-излучения ФС-01

An ISS Small-Gain Theorem for General Networks

We provide a generalized version of the nonlinear small-gain theorem for the case of more than two coupled input-to-state stable (ISS) systems. For this result the interconnection gains are described in a nonlinear gain matrix and the small-gain condition requires bounds on the image of this gain matrix. The condition may be interpreted as a nonlinear generalization of the requirement that the spectral radius of the gain matrix is less than one. We give some interpretations of the condition in special cases covering two subsystems, linear gains, linear systems and an associated artificial dynamical system.Comment: 26 pages, 3 figures, submitted to Mathematics of Control, Signals, and Systems (MCSS

The formation of human populations in South and Central Asia

By sequencing 523 ancient humans, we show that the primary source of ancestry in modern South Asians is a prehistoric genetic gradient between people related to early hunter-gatherers of Iran and Southeast Asia. After the Indus Valley Civilization’s decline, its people mixed with individuals in the southeast to form one of the two main ancestral populations of South Asia, whose direct descendants live in southern India. Simultaneously, they mixed with descendants of Steppe pastoralists who, starting around 4000 years ago, spread via Central Asia to form the other main ancestral population. The Steppe ancestry in South Asia has the same profile as that in Bronze Age Eastern Europe, tracking a movement of people that affected both regions and that likely spread the distinctive features shared between Indo-Iranian and Balto-Slavic languages

Stability Analysis of Large Scale Networks of Autonomous Work Systems with Delays

Abstract — This paper considers the problem of stability analysis for a class of production networks of autonomous work systems with delays in the capacity changes. The system under consideration does not share information between work systems and the work systems adjust capacity with the objective of maintaining a desired amount of local work in progress (WIP). Attention is focused to derive explicit sufficient delay-dependent stability conditions for the network using properties of matrix norm. Finally, numerical results are provided to demonstrate the proposed approach. I

Tests d'efficacité des générateurs pyrotechniques d'insecticides "FUMIVAP" : mise en place d'une série d'essais. Evaluation des activités de l'entomologiste du CIRAD-CP au Cameroun. Mission au Cameroun du 20 juillet au 4 août 1993

Mise en place d'une série d'expérimentations destinées à tester l'efficacité biologique de générateurs pyrotechniques d'insecticides (FUMIVAP) sur les mirides du cacaoyer. Le programme de l'expérimentation et le déroulement des essais réalisés dans la région du Mbam sont décrits. Le fonctionnement et l'efficacité des FUMIVAP sont analysés; une nouvelle mise au point s'avère nécessaire. Examen de la situation du Programme de recherche en entomologie du cacaoyer (tests de produits insecticides contre les mirides; évaluation de la résistance du matériel végétal à l'égard des mirides) et du caféier (inventaire des parasitoïdes du scolyte des fruits du caféier) au Camerou