Delay-driven instability and ecological control in a food-limited population networked system

2020 ◽  
Vol 100 (4) ◽  
pp. 4031-4044
Author(s):  
Wenzhen Gan ◽  
Peng Zhu ◽  
Zuhan Liu ◽  
Canrong Tian
Keyword(s):  
Networked System ◽  
Ecological Control

DEVELOPMENT OF INTEGRATED MONITORING NETWORK FOR MEASURING SALINITY OF SEA WATER

2018 ◽  
pp. 18-26
Author(s):  
Sima Ajdar qizi Askerova
Keyword(s):  
Surface Waters ◽  
Sea Water ◽  
Water Environment ◽  
Monitoring Network ◽  
Monitoring Networks ◽  
The Caspian Sea ◽  
Integrated Monitoring ◽  
Ecological Control ◽  
Different Depths ◽  
Optimal Construction

Monitoring of sea water condition is one of major requirements for carrying out the reliable ecological control of water environment. Monitoring networks contain such elements as sea buoys, beacons, etc. and are designated for measuringvarious hydrophysical parameters, including salinity of sea water. Development of specialized network and a separate buoy system for measuring thesea water salinity at different depths makes it possible to determine major regularities of processes of pollution and self-recovery of the sea waters. The article describes the scientific and methodological basics for development of this specialized network and questions of its optimal construction. It is well-known that at a depth of 30-45 m of the Caspian Sea salinity decreases and then at a depth of 45-60 m salinity is fully recovered. The mentioned changes of salinity at the relatively upper layer of sea waters is of special interest for studying the effect of ocean-going processes on the climate forming in the Caspian area. In terms of informativeness of measurements of surface waters salinity, the most informative is a layer ata 30-60 m depth, where inversion and recovery of salinity take place. It is shown that in most informative subrange of measurements, i. e. at a depth of 30-60 m optimization of regime of measurements complex should be carried out in order to increase the effectiveness of held researches. It is shown that at a depth of 35-50 m choice of the optimum regime of measurements makes it possible to obtain the maximum amount of information.

Design and Implementation of a Rehabilitation Wireless Networked System

2017 ◽  
Vol 2 (2) ◽  
Author(s):  
Mahmood Zaki Abdullah ◽  
Fadia Noori Hummadi
Keyword(s):  
Networked System ◽  
Design And Implementation

Design and Implementation of a Rehabilitation Wireless Networked System

2017 ◽  
Author(s):  
Mahmood Zaki Abdullah ◽  
Fadia Noori Hummadi
Keyword(s):  
Networked System ◽  
Design And Implementation

scholarly journals Investigation on the Structure of a Networked System

2010 ◽  
Vol 2 (6) ◽  
pp. 7694-7695
Author(s):  
S. La Rovere ◽  
P. Vestrucci
Keyword(s):  
Networked System

Perturbations in Networked Control Systems

2001 ◽  
Author(s):  
Octavian Beldiman ◽  
Linda G. Bushnell ◽  
Gregory C. Walsh ◽  
Hua O. Wang ◽  
Yiguang Hong
Keyword(s):  
Control System ◽  
Control Systems ◽  
Networked Control Systems ◽  
Networked Control System ◽  
Networked Control ◽  
Asymptotically Stable ◽  
Networked System ◽  
External Perturbations ◽  
Exponentially Stable

Abstract In this paper we study the effect of external perturbations on a networked control system. We start by assuming that the non-networked system without perturbation is exponentially stable. Then, for fast enough networks we show that if the perturbation is bounded the networked system is ultimately bounded and if the perturbation is vanishing then the networked system is asymptotically stable. We conclude the paper with simulations verifying the results.

scholarly journals INTEGRATED AGROECOLOGICAL CONTROL OF WHEAT APHIDS AND CICADES, STANDING FOR ENVIRONMENT-AGRICTURE-SUSTAINABLE DEVELOPMENT INTERRELATION, IN TRANSYLVANIA

1970 ◽  
Vol 62 ◽  
Author(s):  
Dana Malschi ◽  
G. Stan ◽  
Felicia Mureşanu ◽  
Elena Nagy ◽  
Maria Ştefănescu
Keyword(s):  
Sustainable Development ◽  
Integrated Control ◽  
Sustainable Use ◽  
Climatic Warming ◽  
Metopolophium Dirhodum ◽  
Ecological Control ◽  
Ecological Changes ◽  
Present Complex ◽  
Selective Insecticides ◽  
Control Management

The study has like objective, the modernize of integrated control management of aphids and cicades, vectors of wheat yellowishing and dwarf, by optimizing environment-agricture-sustainable development relations. The produced damages on wheat by aphids and cicades, justify the proposed research approaching. Pointed out by as on the last 30 years, the aphids dominante species Sitobion avenae, Schizaphis graminum, Metopolophium dirhodum, Rophalosiphum padi and the cicades: Psammotettix alienus, Macrosteles laevis, Javesella pellucida are registered and well knowed like vectors. Approaching a problem of economical importance and of actual scientific large interest, at national and European level, especially in conditions of profound agro-ecological changes brought by climatic warming and aridity, as the technologic and economic new conditions from agricultural area exploitations, the paper present complex researches, in systemic manner, concerning: knowledge of insects-vectors populations of viruses and micoplasma, which causes the cereals yellowishing, dwarf and nanisme; monitoring and settlement for the risk of this attack extending, with a increase potential, affecting the production of cereal grains cultures and which can causes sowing field compromise, especially of those find in monoculture or those sown early in September; the elaboration of a strategy for integrated agro-ecological control for these insects in Transylvania, through interdisciplinary research about the reductions methods of the attack in function of technological factors: selective insecticides, efficiency economic and ecologic, agro-technical methods and biotic factors: natural entomophagous; environmental protection, conservation and sustainable use of biodiversity.

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