INTEROPERABILITY ISSUES OF EARTH OBSERVATION \ud GRID SYSTEMS\ud

Interoperability Issues of Earth Observation Grid Systems. A. Shelestov, S. Skakun, M. Korbakov. In this paper we review issues of Earth observation Grid systems integration. We describe different approaches for the solution of problems of certificate trust, data transfer, geospatial data access, task management, etc. As an example, we describe InterGrid system for environmental and natural disaster monitoring that integrates several regional and national Grid systems.\ud Интеграция Grid-систем исследования Земли. Шелестов А.Ю., Скакун С.В., Корбаков М.Б. В работе рассматриваются вопросы интеграции Grid-систем исследования Земли. Приведены возможные подходы к решению задач, возникающих при интеграции: обмен сертификатами, обмен данными, доступ к геопространственным данным, выполнение заданий и т.д. В качестве примера использования описанных решений описана InterGrid-система, которая объединяет несколько региональных и национальных Grid-систем и направлена на решения задач экологического мониторинга и мониторинга природных чрезвычайных ситуаций.\u

PRACTICAL ISSUES OF SENSOR WEB IMPLEMENTATION AND GRIDIFICATION

In this paper we provide an overview of emerging Sensor Web paradigm and show several practical issues of using Sensor Web technologies for real-world tasks. Issues under study include sensor description using SensorML and database performance for serving observations data. This paper also shows an approach for integrating standard Sensor Observation Service with Globus Toolkit Grid platform.\ud В данной работе представлен обзор развивающейся парадигмы Sensor Web и рассмотрены практические вопросы использования данной технологии для решения прикладных задач. Рассматриваются вопросы описания численных моделей с использованием языка SensorML и оценки производительности баз данных в задачах обслуживания сервисов Sensor Web. Кроме того, в работе описаны подходы к интеграции сервисов Sensor Web с Grid-платформой Globus Toolkit.\u

Interoperability Issues of Earth Observation Grid Systems

In this paper we review issues of Earth observation Grid systems integration. We describe different approaches for the solution of problems of certificate trust, data transfer, geospatial data access, task management, etc. As an example, we describe InterGrid system for environmental and natural disaster monitoring that integrates several regional and national Grid systems.В работе рассматриваются вопросы интеграции Grid-систем исследования Земли. Приведены возможные подходы к решению задач, возникающих при интеграции: обмен сертификатами, обмен данными, доступ к геопространственным данным, выполнение заданий и т.д. В качестве примера использования описанных решений описана InterGrid-система, которая объединяет несколько региональных и национальных Grid-систем и направлена на решения задач экологического мониторинга и мониторинга природных чрезвычайных ситуаций

Science and Innovations

Abstract: The basic matrixes method is suggested for the Leontief model analysis (LM) with some of its components indistinctly given. LM can be construed as a forecast task of product's expenses-output on the basis of the known statistic information at indistinctly given several elements' meanings of technological matrix, restriction vector and variables' limits. Elements of technological matrix, right parts of restriction vector LM can occur as functions of some arguments. In this case the task's dynamic analog occurs. LM essential complication lies in inclusion of variables restriction and criterion function in it

Fluorescent Chemosensors for Anions and Contact Ion Pairs with a Cavity-Based Selectivity

The association of a concave macrocyclic compound to one or multiple fluorophores is an appealing strategy for the design of chemosensors. Indeed, as with biological systems, a cavity-based selectivity can be expected with such fluorescent receptors. Examples of calix[6]arene-based systems using this strategy are rare in the literature, and to our knowledge, no examples of fluorescent receptors that can bind organic contact ion pairs have been reported. This report describes the straightforward synthesis of fluorescent calix[6]arene-based receptors 4a and 4b bearing three pyrenyl subunits and the study of their binding properties toward anions and ammonium salts using different spectroscopies. It was found that receptor 4a exhibits a remarkable selectivity for the sulfate anion in DMSO, enabling its selective sensing by fluorescence spectroscopy. In CDCl3, the receptor is able to bind ammonium ions efficiently only in association with the sulfate anion. Interestingly, this cooperative binding of ammonium sulfate salts was also evidenced in a protic environment. Finally, a cavity-based selectivity in terms of size and shape of the guest was observed with both receptors 4a and 4b, opening interesting perspectives on the elaboration of fluorescent cavity-based systems for the selective sensing of biologically relevant ammonium salts such as neurotransmitters.SCOPUS: ar.jinfo:eu-repo/semantics/publishe

Fluorescence Patterns from Supramolecular Polymer Assembly and Disassembly for Sensing Metallo- and Nonmetalloproteins

Critical aggregation concentration (CAC) of surfactants is lowered when polyelectrolytes act as counterions. At a concentration in between the CACs of the surfactant and the polymer−surfactant complex, protein-induced disassemblies can be achieved. This is because, when proteins competitively bind to the polyelectrolytes, the surfactants are not capable of sustaining a micelle-type assembly at this concentration. Since these amphiphilic aggregates are capable of noncovalently sequestering hydrophobic guest molecules, the protein binding induced disassembly process also results in a guest release from these assemblies. We show here that the change in fluorescence with different proteins is dependent not only on the nature of the polymer−surfactant complex, but also on the fluorescent transducer. Two processes can be responsible for the observed fluorescence change: fluorophore guest release from the hydrophobic interior of the assembly and excited state quenching due to complementary components in the analyte. The latter mechanism is especially possible with metalloproteins. We show here that an excited state quenching is possible at nanomolar concentrations of the proteins, while the disassembly based fluorescence reduction is the dominant pathway at micromolar concentrations