63 research outputs found

    О Π½ΠΎΠ²ΠΎΠΌ Ρ€ΠΎΠ΄Π΅ вСрхнСпалСозойских растСний Brovuchkia Parfenova gen. nov. ΠΈΠ· ΠšΠ΅ΠΌΠ΅Ρ€ΠΎΠ²ΡΠΊΠΎΠ³ΠΎ Ρ€Π°ΠΉΠΎΠ½Π° ΠšΡƒΠ·Π±Π°ΡΡΠ°

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    Multimedia information systems have been developed into service-ware. With the paradigms of web services, service oriented architectures (SOA), and Web 2.0 widgets, multimedia has become truly ubiquitous. However, interoperability, scalability, reliability and security are arising challenges at mobile multimedia service development. This paper focuses on the analysis, design, development and evaluation of a middleware that allows access from mobile devices to a bundle of multimedia services. The services are based on the international multimedia metadata description standard MPEG-7. The implementation is based on new generation of service-oriented application servers called Lightweight Application Server (LAS). Mobile web services refer to the fact that mobile servers host web services. A prototype was developed as a proof of concept, showing how to access MPEG-7 based multimedia services from a Mobile Host and the analysis results of providing MPEG-7 based multimedia services in the form of web services from the Mobile Host to other mobile devices. An alternative solution is to apply enterprise service bus technology as the middleware. The performance evaluation results of both approaches show the reliable accessibility of MPEG-7 based multimedia services via the enterprise service bus solution

    ИсслСдованиС Π³Π΅Π½Π΅Ρ€Π°Ρ†ΠΈΠΈ ΠΊΠΎΠ³Π΅Ρ€Π΅Π½Ρ‚Π½ΠΎΠ³ΠΎ рСнтгСновского излучСния 500-850 ΠœΡΠ’ элСктронами Π² слоТных пСриодичСских Ρ€Π°Π΄ΠΈΠ°Ρ‚ΠΎΡ€Π°Ρ…

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    ΠŸΡ€ΠΈΠ²Π΅Π΄Π΅Π½ Π°Π½Π°Π»ΠΈΠ· Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ΠΎΠ² сСрии экспСримСнтов, Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½Π½Ρ‹Ρ… Ρ€Π°Π½Π΅Π΅ Π½Π° элСктронном синхротронС, ΠΏΠΎ исслСдованию ΠΌΠ΅Ρ…Π°Π½ΠΈΠ·ΠΌΠΎΠ² Π³Π΅Π½Π΅Ρ€Π°Ρ†ΠΈΠΈ ΠΊΠΎΠ³Π΅Ρ€Π΅Π½Ρ‚Π½ΠΎΠ³ΠΎ рСнтгСновского излучСния 500-850 ΠœΡΠ’ элСктронами Π² слоТных пСриодичСских ΠΌΠ½ΠΎΠ³ΠΎΠΊΡ€ΠΈΡΡ‚Π°Π»ΡŒΠ½Ρ‹Ρ… Ρ€Π°Π΄ΠΈΠ°Ρ‚ΠΎΡ€Π°Ρ… ΠΈ Ρ€Π°Π΄ΠΈΠ°Ρ‚ΠΎΡ€Π°Ρ… Ρ‚ΠΈΠΏΠ° многослойных ΠΈΠ½Ρ‚Π΅Ρ€Ρ„Π΅Ρ€Π΅Π½Ρ†ΠΈΠΎΠ½Π½Ρ‹Ρ… рСнтгСновских Π·Π΅Ρ€ΠΊΠ°Π». Анализ ΠΏΠΎΠΊΠ°Π·Π°Π», Ρ‡Ρ‚ΠΎ Ρ‚Π°ΠΊΠΎΠΉ ΠΏΠΎΠ΄Ρ…ΠΎΠ΄ позволяСт ΠΏΠΎΠ»ΡƒΡ‡ΠΈΡ‚ΡŒ Π±ΠΎΠ»Π΅Π΅ интСнсивноС ΠΈ ΡƒΠ·ΠΊΠΎΠ½Π°ΠΏΡ€Π°Π²Π»Π΅Π½Π½ΠΎΠ΅ ΠΈΠ·Π»ΡƒΡ‡Π΅Π½ΠΈΠ΅, Ρ‡Π΅ΠΌ ΠΏΡ€ΠΈ использовании монокристаллов, Π·Π° счСт Π²ΠΊΠ»Π°Π΄Π° Π΄ΠΈΡ„Ρ€Π°Π³ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ рСнтгСновского ΠΏΠ΅Ρ€Π΅Ρ…ΠΎΠ΄Π½ΠΎΠ³ΠΎ излучСния

    Conditions for ignition of the volume discharge in the systems of gas electrofiltration

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    ДослідТСно Π²ΠΏΠ»ΠΈΠ² конструкції Π΅Π»Π΅ΠΊΡ‚Ρ€ΠΎΠ΄Π½ΠΈΡ… систСм Ρ‚Π° ΡˆΠ²ΠΈΠ΄ΠΊΠΎΡΡ‚Ρ– Π³Π°Π·ΠΎΠ²ΠΎΠ³ΠΎ ΠΏΠΎΡ‚ΠΎΠΊΡƒ Π½Π° ΡƒΠΌΠΎΠ²ΠΈ запалювання Ρ‚Π° ΠΏΡ–Π΄Ρ‚Ρ€ΠΈΠΌΠΊΠΈ ΡΡ‚Π°Π±Ρ–Π»ΡŒΠ½ΠΎΠ³ΠΎ ΠΎΠ±'Ρ”ΠΌΠ½ΠΎΠ³ΠΎ розряду Π² систСмах Π΅Π»Π΅ΠΊΡ‚Ρ€ΠΎΡ„Ρ–Π»ΡŒΡ‚Ρ€Π°Ρ†Ρ–Ρ— Π³Π°Π·Ρ–Π². ВстановлСно, Ρ‰ΠΎ для отримання ΠΎΠ±'Ρ”ΠΌΠ½ΠΎΠ³ΠΎ розряду, який Π·Π°- ΠΉΠΌΠ°Ρ” вСсь ΠΌΡ–ΠΆΠ΅Π»Π΅ΠΊΡ‚Ρ€ΠΎΠ΄Π½ΠΈΠΉ ΠΎΠ±'Ρ”ΠΌ, Π½Π΅ΠΎΠ±Ρ…Ρ–Π΄Π½Π΅ застосування Π΅Π»Π΅ΠΊΡ‚Ρ€ΠΎΠ΄Π½ΠΎΡ— систСми Ρ‚ΠΈΠΏΡƒ Β«Ρ‰Ρ–Ρ‚ΠΊΠ°Β» Π· симСтричним Ρ€ΠΎΠ·Ρ‚Π°ΡˆΡƒΠ²Π°Π½Π½ΡΠΌ ΠΎΡΠ°Π΄ΠΆΡƒΠ²Π°Π»ΡŒΠ½ΠΈΡ… Π΅Π»Π΅ΠΊΡ‚Ρ€ΠΎΠ΄Ρ–Π². Напруга запалювання ΠΉ інтСнсивного світіння Ρ‚Π°ΠΊΠΎΠ³ΠΎ розряду 55–60 ΠΊΠ’ ΠΏΡ€ΠΈ частоті проходТСння Ρ–ΠΌΠΏΡƒΠ»ΡŒΡΡ–Π² Π²Ρ–Π΄ 1 Π΄ΠΎ 3 ΠΊΠ“Ρ†. Для нСдопущСння виникнСння ΠΊΠΎΠ½Ρ‚Ρ€Π°ΠΊΡ†Ρ–Ρ— ΠΌΡ–Π½Ρ–ΠΌΠ°Π»ΡŒΠ½Π° частота проходТСння Ρ–ΠΌΠΏΡƒΠ»ΡŒΡΡ–Π² ΠΏΠΎΠ²ΠΈΠ½Π½Π° Π±ΡƒΡ‚ΠΈ ΠΏΡ€ΠΎΠΏΠΎΡ€Ρ†Ρ–ΠΉΠ½Π° ΡˆΠ²ΠΈΠ΄ΠΊΠΎΡΡ‚Ρ– ΠΏΠΎΡ‚ΠΎΠΊΡƒ Π³Π°Π·Ρƒ Ρ– ΠΎΠ±Π΅Ρ€Π½Π΅Π½ΠΎ ΠΏΡ€ΠΎΠΏΠΎΡ€Ρ†Ρ–ΠΉΠ½Π° Π΄ΠΎΠ²ΠΆΠΈΠ½Ρ– ΠΊΠ°Π½Π°Π»Ρƒ прокачування Π³Π°Π·Ρƒ.The influence of the design of electrode systems and the speed of the gas flow on the conditions of ignition and maintenance of a stable volumetric discharge in the systems of electrofiltration of gases is studied. It is established that to obtain a volume discharge, which occupies the entire interelectrode volume, it is necessary to use an electrode system of the "brush" type with a symmetrical arrangement of the precipitation electrodes. The voltage of ignition and intensive luminescence of such a discharge is 55-60 kV at a repetition rate of 1 to 3 kHz. It became possible to generate the total plasma volume up to 10 L using this electrode system. The mean electric power consumed for sustaining the stable voluminous discharge in this volume was 0.8 W. The research of the effect of gasdynamic processes on the stability of the voluminous discharge revealed that the gas flow velocity not exceeding 20 m/s produces no effect on the ignition and sustaining of a stable discharge. To prevent the occurrence of contraction, the minimum pulse repetition rate should be proportional to the gas flow rate and inversely proportional to the length of the gas flow channel

    Analysis of Sharable Learning Processes and Action Patterns for Adaptive Learning Support

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    Smart Social Software for Mobile Cross-Media Communities

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