14 research outputs found
Subsurface radiolocation tomography of cables under dual-polarization probing
It is proposed to use the tomographic approach to the problem of detecting and imaging concealed utility networks. This approach is based on generating the three-dimensional radio images of the space being explored from the results of measuring its location wave projections in a dual-polarization measurement mode. The problem is solved by focusing radiation first on the βairβdielectricβ interface and then inside the dielectric. Experimental data processing results and reconstructed threedimensional radio tomograms are provided for a βtwisted pairβ cable and a fiber-optic cable with no metallic inclusions. The results confirm the operability of the approach
German-Russian Astroparticle Data Life Cycle Initiative to foster Big Data Infrastructure for Multi-Messenger Astronomy
Challenges faced by researchers in multi-messenger astroparticle physics include: computing-intensive search and preprocessing related to the diversity of content and formats of the data from different observatories as well as to data fragmentation over separate storage locations; inconsistencies in user interfaces for data retrieval; lack of the united infrastructure solutions suitable for both data gathering and online analysis, e.g. analyses employing deep neural networks. In order to address solving these issues, the German-Russian Astroparticle Data Life Cycle Initiative (GRADLCI) was created. In addition, we support activities for communicating our research field to the public. The approaches proposed by the project are based on the concept of data life cycle, which assumes a particular pipeline of data curation used for every unit of the data from the moment of its retrieval or creation through the stages of data preprocessing, analysis, publishing and archival. The movement towards unified data curation schemes is essential to increase the benefits gained in the analysis of geographically distributed or content-diverse data. Within the project, an infrastructure for effective astroparticle data curation and online analysis was developed. Using it, first results on deep-learning based analysis were obtained
ΠΠ·Π°ΠΈΠΌΠΎΠΎΡΠ½ΠΎΡΠ΅Π½ΠΈΡ Π½Π΅ΠΏΡΠΈΡΠΎΠ΅Π΄ΠΈΠ½ΠΈΠ²ΡΠΈΡ ΡΡ ΡΡΡΠ°Π½ ΠΡΡΠΈΠΊΠΈ ΠΈ Β«Π²ΡΠΎΡΠΎΠ³ΠΎ ΠΌΠΈΡΠ°Β» (1960-1980-Π΅ Π³Π³.) Π½Π° ΠΏΡΠΈΠΌΠ΅ΡΠ΅ Π‘ΡΠ΅ΡΡΠ°-ΠΠ΅ΠΎΠ½Π΅
The research covers Sierra Leoneβs relations with the Second World through the prism of Sierra Leoneβs foreign policy. Two periods of Sierra Leoneβs foreign policy are considered: during the Westminster bipartisan model from 1961 to 1970, and when the authoritarian regime led by President Siaka Stevens was established from 1971 to 1985. The central issue of the research is analysis of Sierra Leoneβs cooperation with the Soviet Union. The aim of the research is to identify the factors that guided the non-aligned countries within the bipolar confrontation of the second half of the 20th century in building their relations with the socialist bloc. The relevance of the topic is related to the fact that the logic and principles of building relations of small non-aligned countries with both limited power resources and little political and economic ambitions with key world powers are less reflected in studies. The research is based upon comparative and historical-genetic methods as well as case studies. The author makes use of materials from the Sierra Leone Public Archives. The author concludes that Sierra Leoneβs relations with the Second World were based on economic pragmatism rather than ideological or political proximity. For Sierra Leone, relations with socialist countries served as a tool for diversifying its foreign policy. This set Sierra Leone apart from its neighboring West African states, which either maintained an orientation towards first-world countries, namely France and the US, or reoriented themselves towards the Soviet Union.Π Π°ΡΠΊΡΡΠ²Π°Π΅ΡΡΡ ΠΏΡΠΎΠ±Π»Π΅ΠΌΠ°ΡΠΈΠΊΠ° ΠΎΡΠ½ΠΎΡΠ΅Π½ΠΈΠΉ Π°ΡΡΠΈΠΊΠ°Π½ΡΠΊΠΈΡ
ΡΡΡΠ°Π½ Ρ Π³ΠΎΡΡΠ΄Π°ΡΡΡΠ²Π°ΠΌΠΈ Β«Π²ΡΠΎΡΠΎΠ³ΠΎ ΠΌΠΈΡΠ°Β» ΡΠ΅ΡΠ΅Π· ΠΏΡΠΈΠ·ΠΌΡ Π²Π½Π΅ΡΠ½Π΅ΠΏΠΎΠ»ΠΈΡΠΈΡΠ΅ΡΠΊΠΎΠΉ Π΄Π΅ΡΡΠ΅Π»ΡΠ½ΠΎΡΡΠΈ Π‘ΡΠ΅ΡΡΠ°-ΠΠ΅ΠΎΠ½Π΅. Π Π°ΡΡΠΌΠ°ΡΡΠΈΠ²Π°ΡΡΡΡ Π΄Π²Π° ΠΏΠ΅ΡΠΈΠΎΠ΄Π° Π²Π½Π΅ΡΠ½Π΅ΠΉ ΠΏΠΎΠ»ΠΈΡΠΈΠΊΠΈ Π‘ΡΠ΅ΡΡΠ°-ΠΠ΅ΠΎΠ½Π΅ - Π² Π³ΠΎΠ΄Ρ ΡΡΡΠ΅ΡΡΠ²ΠΎΠ²Π°Π½ΠΈΡ ΠΠ΅ΡΡΠΌΠΈΠ½ΡΡΠ΅ΡΡΠΊΠΎΠΉ Π΄Π²ΡΡ
ΠΏΠ°ΡΡΠΈΠΉΠ½ΠΎΠΉ ΠΌΠΎΠ΄Π΅Π»ΠΈ Π² 1961-1970 Π³Π³. ΠΈ Π² 1971-1985 Π³Π³., ΠΊΠΎΠ³Π΄Π° Π² ΡΡΡΠ°Π½Π΅ ΡΡΡΠ°Π½ΠΎΠ²ΠΈΠ»ΡΡ Π°Π²ΡΠΎΡΠΈΡΠ°ΡΠ½ΡΠΉ ΡΠ΅ΠΆΠΈΠΌ Π²ΠΎ Π³Π»Π°Π²Π΅ Ρ ΠΏΡΠ΅Π·ΠΈΠ΄Π΅Π½ΡΠΎΠΌ Π‘ΠΈΠ°ΠΊΠΎΠΉ Π‘ΡΠΈΠ²Π΅Π½ΡΠΎΠΌ. Π¦Π΅Π½ΡΡΠ°Π»ΡΠ½ΠΎΠ΅ ΠΌΠ΅ΡΡΠΎ Π·Π°Π½ΠΈΠΌΠ°Π΅Ρ Π°Π½Π°Π»ΠΈΠ· ΡΠΎΡΡΡΠ΄Π½ΠΈΡΠ΅ΡΡΠ²Π° Π‘ΡΠ΅ΡΡΠ°-ΠΠ΅ΠΎΠ½Π΅ ΠΈ Π‘ΠΎΠ²Π΅ΡΡΠΊΠΎΠ³ΠΎ Π‘ΠΎΡΠ·Π°. Π¦Π΅Π»Ρ - ΠΎΠΏΡΠ΅Π΄Π΅Π»ΠΈΡΡ, ΡΠ΅ΠΌ ΡΡΠΊΠΎΠ²ΠΎΠ΄ΡΡΠ²ΠΎΠ²Π°Π»ΠΈΡΡ ΡΡΡΠ°Π½Ρ, ΠΈΠ·Π±ΡΠ°Π²ΡΠΈΠ΅ ΠΏΡΡΡ Π½Π΅ΠΏΡΠΈΡΠΎΠ΅Π΄ΠΈΠ½Π΅Π½ΠΈΡ Π² ΡΠ°ΠΌΠΊΠ°Ρ
Π±ΠΈΠΏΠΎΠ»ΡΡΠ½ΠΎΠ³ΠΎ ΠΏΡΠΎΡΠΈΠ²ΠΎΡΡΠΎΡΠ½ΠΈΡ Π²ΡΠΎΡΠΎΠΉ ΠΏΠΎΠ»ΠΎΠ²ΠΈΠ½Ρ XX Π²., Π²ΡΡΡΡΠ°ΠΈΠ²Π°Π½ΠΈΠΈ ΡΠ²ΠΎΠΈΡ
ΠΎΡΠ½ΠΎΡΠ΅Π½ΠΈΠΉ Ρ ΡΠΎΡΠΈΠ°Π»ΠΈΡΡΠΈΡΠ΅ΡΠΊΠΈΠΌ Π±Π»ΠΎΠΊΠΎΠΌ. ΠΠΊΡΡΠ°Π»ΡΠ½ΠΎΡΡΡ ΡΠ΅ΠΌΡ ΡΠ²ΡΠ·Π°Π½Π° Ρ ΡΠ΅ΠΌ, ΡΡΠΎ Π»ΠΎΠ³ΠΈΠΊΠ° ΠΈ ΠΏΡΠΈΠ½ΡΠΈΠΏΡ Π²ΡΡΡΡΠ°ΠΈΠ²Π°Π½ΠΈΡ ΠΎΡΠ½ΠΎΡΠ΅Π½ΠΈΡ Ρ ΠΊΠ»ΡΡΠ΅Π²ΡΠΌΠΈ ΠΌΠΈΡΠΎΠ²ΡΠΌΠΈ Π΄Π΅ΡΠΆΠ°Π²Π°ΠΌΠΈ ΠΌΠ°Π»ΡΡ
Π½Π΅ΠΏΡΠΈΡΠΎΠ΅Π΄ΠΈΠ½ΠΈΠ²ΡΠΈΡ
ΡΡ ΡΡΡΠ°Π½, ΠΎΠ±Π»Π°Π΄Π°ΡΡΠΈΡ
ΠΊΠ°ΠΊ Π½Π΅Π±ΠΎΠ»ΡΡΠΈΠΌΠΈ ΡΠΈΠ»ΠΎΠ²ΡΠΌΠΈ ΡΠ΅ΡΡΡΡΠ½ΡΠΌΠΈ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΡΠΌΠΈ, ΡΠ°ΠΊ ΠΈ ΠΎΠ³ΡΠ°Π½ΠΈΡΠ΅Π½Π½ΡΠΌΠΈ ΠΏΠΎΠ»ΠΈΡΠΈΡΠ΅ΡΠΊΠΈΠΌΠΈ ΠΈ ΡΠΊΠΎΠ½ΠΎΠΌΠΈΡΠ΅ΡΠΊΠΈΠΌΠΈ Π°ΠΌΠ±ΠΈΡΠΈΡΠΌΠΈ, Π² ΠΌΠ΅Π½ΡΡΠ΅ΠΉ ΡΡΠ΅ΠΏΠ΅Π½ΠΈ ΠΎΡΡΠ°ΠΆΠ΅Π½Ρ Π² Π½Π°ΡΡΠ½ΡΡ
ΡΠ°Π±ΠΎΡΠ°Ρ
. ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΎΠΏΠΈΡΠ°Π΅ΡΡΡ Π½Π° ΠΊΠΎΠΌΠΏΠ°ΡΠ°ΡΠΈΠ²ΠΈΡΡΡΠΊΠΈΠΉ ΠΈ ΠΈΡΡΠΎΡΠΈΠΊΠΎ-Π³Π΅Π½Π΅ΡΠΈΡΠ΅ΡΠΊΠΈΠΉ ΠΌΠ΅ΡΠΎΠ΄Ρ, Π° ΡΠ°ΠΊΠΆΠ΅ Π½Π° ΠΌΠ΅ΡΠΎΠ΄ ΠΊΠ΅ΠΉΡ-ΡΡΠ°Π΄ΠΈ. Π’Π°ΠΊΠΆΠ΅ ΠΈΡΠΏΠΎΠ»ΡΠ·ΡΡΡΡΡ ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»Ρ ΠΠΎΡΡΠ΄Π°ΡΡΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ Π°ΡΡ
ΠΈΠ²Π° Π‘ΡΠ΅ΡΡΠ°-ΠΠ΅ΠΎΠ½Π΅. ΠΠ²ΡΠΎΡ ΠΏΡΠΈΡ
ΠΎΠ΄ΠΈΡ ΠΊ Π²ΡΠ²ΠΎΠ΄Ρ, ΡΡΠΎ ΠΎΡΠ½ΠΎΡΠ΅Π½ΠΈΡ Π‘ΡΠ΅ΡΡΠ°-ΠΠ΅ΠΎΠ½Π΅ ΠΈ ΡΡΡΠ°Π½ Β«Π²ΡΠΎΡΠΎΠ³ΠΎ ΠΌΠΈΡΠ°Β» ΠΎΡΠ½ΠΎΠ²ΡΠ²Π°Π»ΠΈΡΡ ΡΠΊΠΎΡΠ΅Π΅ Π½Π° ΡΠΊΠΎΠ½ΠΎΠΌΠΈΡΠ΅ΡΠΊΠΎΠΌ ΠΏΡΠ°Π³ΠΌΠ°ΡΠΈΠ·ΠΌΠ΅, Π½Π΅ΠΆΠ΅Π»ΠΈ ΡΠ΅ΠΌ Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ ΠΈΠ΄Π΅ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΈΠ»ΠΈ ΠΏΠΎΠ»ΠΈΡΠΈΡΠ΅ΡΠΊΠΎΠΉ Π±Π»ΠΈΠ·ΠΎΡΡΠΈ. ΠΠ»Ρ Π‘ΡΠ΅ΡΡΠ°-ΠΠ΅ΠΎΠ½Π΅ ΠΎΡΠ½ΠΎΡΠ΅Π½ΠΈΡ Ρ ΡΠΎΡΠΈΠ°Π»ΠΈΡΡΠΈΡΠ΅ΡΠΊΠΈΠΌΠΈ ΡΡΡΠ°Π½Π°ΠΌΠΈ Π²ΡΡΡΡΠΏΠ°Π»ΠΈ ΠΈΠ½ΡΡΡΡΠΌΠ΅Π½ΡΠΎΠΌ Π΄ΠΈΠ²Π΅ΡΡΠΈΡΠΈΠΊΠ°ΡΠΈΠΈ Π²Π½Π΅ΡΠ½Π΅ΠΏΠΎΠ»ΠΈΡΠΈΡΠ΅ΡΠΊΠΎΠΉ Π΄Π΅ΡΡΠ΅Π»ΡΠ½ΠΎΡΡΠΈ. ΠΡΠΎ Π²ΡΠ΄Π΅Π»ΡΠ»ΠΎ Π‘ΡΠ΅ΡΡΠ°-ΠΠ΅ΠΎΠ½Π΅ Π½Π° ΡΠΎΠ½Π΅ ΡΠΎΡΠ΅Π΄Π½ΠΈΡ
Π³ΠΎΡΡΠ΄Π°ΡΡΡΠ² ΠΠ°ΠΏΠ°Π΄Π½ΠΎΠΉ ΠΡΡΠΈΠΊΠΈ, ΠΊΠΎΡΠΎΡΡΠ΅ Π»ΠΈΠ±ΠΎ ΡΠΎΡ
ΡΠ°Π½ΡΠ»ΠΈ ΠΎΡΠΈΠ΅Π½ΡΠ°ΡΠΈΡ Π½Π° ΡΡΡΠ°Π½Ρ Β«ΠΏΠ΅ΡΠ²ΠΎΠ³ΠΎ ΠΌΠΈΡΠ°Β», Π° ΠΈΠΌΠ΅Π½Π½ΠΎ Π€ΡΠ°Π½ΡΠΈΡ ΠΈ Π‘Π¨Π, Π»ΠΈΠ±ΠΎ ΠΆΠ΅ ΠΏΠ΅ΡΠ΅ΠΎΡΠΈΠ΅Π½ΡΠΈΡΠΎΠ²Π°Π»ΠΈΡΡ Π½Π° Π‘ΠΎΠ²Π΅ΡΡΠΊΠΈΠΉ Π‘ΠΎΡΠ·
Subsurface radiolocation tomography of cables under dual-polarization probing
It is proposed to use the tomographic approach to the problem of detecting and imaging concealed utility networks. This approach is based on generating the three-dimensional radio images of the space being explored from the results of measuring its location wave projections in a dual-polarization measurement mode. The problem is solved by focusing radiation first on the βairβdielectricβ interface and then inside the dielectric. Experimental data processing results and reconstructed threedimensional radio tomograms are provided for a βtwisted pairβ cable and a fiber-optic cable with no metallic inclusions. The results confirm the operability of the approach
Towards the Baikal Open Laboratory in Astroparticle Physics
The open science framework defined in the German-Russian Astroparticle Data Life Cycle Initiative (GRADLCI) has triggered educational and outreach activities at the Irkutsk State University (ISU), which is actively participated in the two major astroparticle facilities in the region: TAIGA observatory and Baikal-GVD neutrino telescope. We describe the ideas grew out of this unique environment and propose a new open science laboratory based on education and outreach as well as on the development and testing new methods and techniques for the multimessenger astronomy