249 research outputs found
ΠΠ ΠΠΠ‘Π’ΠΠΠΠΠΠΠΠ‘Π’Π¬ ΠΠ£ΠΠΠΠΠΠ¦ΠΠ Π£Π§ΠΠΠ«Π₯ Π ΠΠΠ Π WEB OF SCIENCE: ΠΠ¦ΠΠΠΠ Π’ΠΠΠ£Π©ΠΠ₯ ΠΠΠΠΠΠΠ’ΠΠΠΠ Π ΠΠΠ Π‘ΠΠΠΠ’ΠΠ ΠΠ₯ Π£ΠΠΠΠΠ§ΠΠΠΠ―
The contribution scientific publications of Russian Academy of Medical Sciences (RAMS) in the national publication stream, indexed by Web of Science over the past thirty years, was estimated. The indicators of publication activity that are necessary for the institutions of RAMS to achieve in short-term period the conformity with bibliometric indicators, established by Presidential Decree of May 7, 2012 (to increase the share of Russian publications in Web of Science to 2.44% in 2015) were calculated. It is shown that the current structure of global science, where publications in medicine make up for approximately one third of scientific publications in the world, set for RAMS scientists particularly difficult task: to double in three years the number of publications in Web of Sci. In the article are proposed the priorities and the necessary steps to fulfill this task.Β ΠΡΠ΅Π½Π΅Π½ Π²ΠΊΠ»Π°Π΄ ΠΏΡΠ±Π»ΠΈΠΊΠ°ΡΠΈΠΉ ΡΡΠ΅Π½ΡΡ
Π ΠΠΠ Π² Π½Π°ΡΠΈΠΎΠ½Π°Π»ΡΠ½ΡΠΉ ΠΏΡΠ±Π»ΠΈΠΊΠ°ΡΠΈΠΎΠ½Π½ΡΠΉ ΠΌΠ°ΡΡΠΈΠ², ΠΎΡΡΠ°ΠΆΠ΅Π½Π½ΡΠΉ Π² Web of Science Π·Π° ΠΏΠΎΡΠ»Π΅Π΄Π½ΠΈΠ΅ 30Β Π»Π΅Ρ. Π Π°ΡΡΡΠΈΡΠ°Π½Ρ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»ΠΈ ΠΏΡΠ±Π»ΠΈΠΊΠ°ΡΠΈΠΎΠ½Π½ΠΎΠΉ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ, ΠΊΠΎΡΠΎΡΡΠ΅ Π½Π΅ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΠΌΡ ΠΠΠ£ Π ΠΠΠ Π΄Π»Ρ Π΄ΠΎΡΡΠΈΠΆΠ΅Π½ΠΈΡ Π² ΠΊΡΠ°ΡΠΊΠΎΡΡΠΎΡΠ½ΠΎΠΉ ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Π΅ ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²ΠΈΡ Π±ΠΈΠ±Π»ΠΈΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΎΠΌΡ ΠΈΠ½Π΄ΠΈΠΊΠ°ΡΠΎΡΡ, ΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½Π½ΠΎΠΌΡ Π£ΠΊΠ°Π·ΠΎΠΌ ΠΡΠ΅Π·ΠΈΠ΄Π΅Π½ΡΠ° Π ΠΎΡΡΠΈΠΉΡΠΊΠΎΠΉ Π€Π΅Π΄Π΅ΡΠ°ΡΠΈΠΈ ΠΎΡ 7Β ΠΌΠ°Ρ 2012Β Π³. (ΡΠ²Π΅Π»ΠΈΡΠ΅Π½ΠΈΠ΅ Π΄ΠΎΠ»ΠΈ ΡΠΎΡΡΠΈΠΉΡΠΊΠΈΡ
ΠΏΡΠ±Π»ΠΈΠΊΠ°ΡΠΈΠΉ Π² Web of Science Π΄ΠΎ 2,44% ΠΊ 2015Β Π³.). ΠΠΎΠΊΠ°Π·Π°Π½ΠΎ, ΡΡΠΎ ΡΠ»ΠΎΠΆΠΈΠ²ΡΠ°ΡΡΡ ΡΡΡΡΠΊΡΡΡΠ° Π³Π»ΠΎΠ±Π°Π»ΡΠ½ΠΎΠΉ Π½Π°ΡΠΊΠΈ, Π² ΠΊΠΎΡΠΎΡΠΎΠΉ Π½Π° ΠΌΠ΅Π΄ΠΈΡΠΈΠ½ΡΠΊΠΈΠ΅ ΠΏΡΠ±Π»ΠΈΠΊΠ°ΡΠΈΠΈ ΠΏΡΠΈΡ
ΠΎΠ΄ΠΈΡΡΡ ΠΎΠΊΠΎΠ»ΠΎ ΡΡΠ΅ΡΠΈ ΠΏΡΠ±Π»ΠΈΠΊΠ°ΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΌΠΈΡΠΎΠ²ΠΎΠ³ΠΎ ΠΏΠΎΡΠΎΠΊΠ°, ΡΡΠ°Π²ΠΈΡ ΠΏΠ΅ΡΠ΅Π΄ ΡΡΠ΅Π½ΡΠΌΠΈ Π ΠΠΠ ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎ ΡΠ»ΠΎΠΆΠ½ΡΡ Π·Π°Π΄Π°ΡΡ: ΡΠ΄Π²ΠΎΠΈΡΡ Π·Π° ΡΡΠΈ Π³ΠΎΠ΄Π° ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²ΠΎ ΠΏΡΠ±Π»ΠΈΠΊΠ°ΡΠΈΠΉ, ΠΈΠ½Π΄Π΅ΠΊΡΠΈΡΡΠ΅ΠΌΡΡ
Π² Web of Science. Π Π°ΡΡΠΌΠ°ΡΡΠΈΠ²Π°ΡΡΡΡ ΠΏΠ΅ΡΠ²ΠΎΠΎΡΠ΅ΡΠ΅Π΄Π½ΡΠ΅ ΠΈ Π½Π΅ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΠΌΡΠ΅ ΠΌΠ΅ΡΡ Π΄Π»Ρ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΈΡ ΡΡΠΎΠΉ Π·Π°Π΄Π°ΡΠΈ.
ΠΠ ΠΠΠΠΠΠ« ΠΠΠ‘ΠΠΠ Π’ΠΠΠ« ΠΠΠΠΠΠΠΠ¦ΠΠΠ‘ΠΠΠ₯ ΠΠ ΠΠΠΠ’ΠΠ Π ΠΠ ΠΠ‘ΠΠΠΠΠΠ― ΠΠ Π‘Π’ΠΠ’Π£Π‘Π ΠΠ ΠΠ Π«ΠΠΠ«Π₯ Π ΠΠΠ ΠΠΠΠΠ Π£Π ΠΠΠΠ―
There was a sharp increase in the number of scientific fields, research fronts, publications and patents in biomedicine in the last five years, whichcomplicates the work of the experts on the selection of projects for priority funding. The approaches to the identification of perspective directionsof research used in the world were examined. An attempt was made of formalization of the concepts of Β«breakthrough researchΒ» and Β«world levelresearchΒ» in relation to the Russian biomedical projects. The rationale for information support of expert decision-making about the prospects of development of individual areas of research in biomedicine is outlined.ΠΡΠΌΠ΅ΡΠ΅Π½ΠΎ ΡΠ΅Π·ΠΊΠΎΠ΅ ΡΠ²Π΅Π»ΠΈΡΠ΅Π½ΠΈΠ΅ ΡΠΈΡΠ»Π° Π½Π°ΠΏΡΠ°Π²Π»Π΅Π½ΠΈΠΉ, ΡΡΠΎΠ½ΡΠΎΠ² ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ, ΠΏΡΠ±Π»ΠΈΠΊΠ°ΡΠΈΠΉ ΠΈ ΠΏΠ°ΡΠ΅Π½ΡΠΎΠ² ΠΏΠΎ Π±ΠΈΠΎΠΌΠ΅Π΄ΠΈΡΠΈΠ½Π΅ Π·Π° ΠΏΠΎΡΠ»Π΅Π΄Π½ΠΈΠ΅ 5 Π»Π΅Ρ, ΡΡΠΎ ΡΡΠ»ΠΎΠΆΠ½ΡΠ΅Ρ ΡΠ°Π±ΠΎΡΡ ΡΠΊΡΠΏΠ΅ΡΡΠΎΠ² ΠΏΠΎ ΠΎΡΠ±ΠΎΡΡ ΠΏΡΠΎΠ΅ΠΊΡΠΎΠ² Π΄Π»Ρ ΠΏΡΠΈΠΎΡΠΈΡΠ΅ΡΠ½ΠΎΠ³ΠΎ ΡΠΈΠ½Π°Π½ΡΠΈΡΠΎΠ²Π°Π½ΠΈΡ. Π Π°ΡΡΠΌΠΎΡΡΠ΅Π½Ρ ΠΏΡΠΈΠ½ΡΡΡΠ΅ Π² ΠΌΠΈΡΠ΅ ΠΏΠΎΠ΄Ρ
ΠΎΠ΄Ρ ΠΊ Π²ΡΡΠ²Π»Π΅Π½ΠΈΡ ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Π½ΡΡ
Π½Π°ΠΏΡΠ°Π²Π»Π΅Π½ΠΈΠΉ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ. ΠΡΠ΅Π΄ΠΏΡΠΈΠ½ΡΡΠ° ΠΏΠΎΠΏΡΡΠΊΠ° ΡΠΎΡΠΌΠ°Π»ΠΈΠ·Π°ΡΠΈΠΈ ΠΏΠΎΠ½ΡΡΠΈΠΉ Β«ΠΏΡΠΎΡΡΠ²Π½ΠΎΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅Β» ΠΈ Β«ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΌΠΈΡΠΎΠ²ΠΎΠ³ΠΎ ΡΡΠΎΠ²Π½ΡΒ» ΠΏΡΠΈΠΌΠ΅Π½ΠΈΡΠ΅Π»ΡΠ½ΠΎ ΠΊ ΡΠΎΡΡΠΈΠΉΡΠΊΠΈΠΌ Π±ΠΈΠΎΠΌΠ΅Π΄ΠΈΡΠΈΠ½ΡΠΊΠΈΠΌ ΠΏΡΠΎΠ΅ΠΊΡΠ°ΠΌ. ΠΡΠΈΠ²ΠΎΠ΄ΠΈΡΡΡ ΠΎΠ±ΠΎΡΠ½ΠΎΠ²Π°Π½ΠΈΠ΅ Π½Π΅ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΠΌΠΎΡΡΠΈ ΠΈΠ½ΡΠΎΡΠΌΠ°ΡΠΈΠΎΠ½Π½ΠΎΠΉ ΠΏΠΎΠ΄Π΄Π΅ΡΠΆΠΊΠΈ ΠΏΡΠΈΠ½ΡΡΠΈΡ ΡΠΊΡΠΏΠ΅ΡΡΠ½ΡΡ
ΡΠ΅ΡΠ΅Π½ΠΈΠΉ ΠΎ ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΡΠ°Π·Π²ΠΈΡΠΈΡ ΠΎΡΠ΄Π΅Π»ΡΠ½ΡΡ
Π½Π°ΠΏΡΠ°Π²Π»Π΅Π½ΠΈΠΉ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ Π² ΠΎΠ±Π»Π°ΡΡΠΈ Π±ΠΈΠΎΠΌΠ΅Π΄ΠΈΡΠΈΠ½Ρ
ΠΠ£ΠΠΠΠΠΠ¦ΠΠΠΠΠΠ― ΠΠΠ’ΠΠΠΠΠ‘Π’Π¬ Π ΠΠ‘Π‘ΠΠΠ‘ΠΠΠ ΠΠΠΠΠ¦ΠΠΠ‘ΠΠΠ ΠΠΠ£ΠΠ Π Π€ΠΠΠ£Π‘Π ΠΠΠ’Π£ΠΠΠ¬ΠΠΠ ΠΠΠ£Π§ΠΠΠ ΠΠΠΠΠ’ΠΠΠ: ΠΠ¦ΠΠΠΠ ΠΠΠ‘Π’ΠΠΠΠΠΠ‘Π’Π Π¦ΠΠΠΠΠ«Π₯ ΠΠΠΠΠΠΠ’ΠΠΠΠ
A comprehensive review of National research policy papers issued over the past 6 years was carried out. A set of problems concerning the quality of predicted values of some bibliometric indicators reflecting the level of research performance and publication activity that were declared in governmental documents was discussed. Basic metrics of scientific performance that should be required to achieve the goals declared in the recent governmental policy papers including Presidentβs Executive Order βΒ 599 of May 7, 2012 (increasing the share of Russian researchersβ publications in the total number of publications in international scientific journals indexed in the Web of Science up to 2,44% in 2015). Taking into account the current structure of modern global science in which papers in biomedical subjects make up for approximately one third of the total world scientific output, it becomes obvious how difficult is the governmental task set up to the researchers β to double the number of journal publications indexed in Web of Science in the short-term period of the nearest three years. The priorities and reasonable goal-oriented efforts to meet the targets are proposed in the paper.Β ΠΡΠΎΠ²Π΅Π΄Π΅Π½ Π°Π½Π°Π»ΠΈΠ· Π³ΠΎΡΡΠ΄Π°ΡΡΡΠ²Π΅Π½Π½ΡΡ
ΠΏΡΠΎΠ³ΡΠ°ΠΌΠΌΠ½ΡΡ
Π΄ΠΎΠΊΡΠΌΠ΅Π½ΡΠΎΠ² ΠΏΠΎ Π½Π°ΡΡΠ½ΠΎΠΉ ΠΏΠΎΠ»ΠΈΡΠΈΠΊΠ΅, Π² ΠΊΠΎΡΠΎΡΡΡ
ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π»ΠΈΡΡ ΠΈΠ½Π΄ΠΈΠΊΠ°ΡΠΎΡΡ ΠΏΡΠ±Π»ΠΈΠΊΠ°ΡΠΈΠΎΠ½Π½ΠΎΠΉ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΈ ΠΏΡΠΎΠ³Π½ΠΎΠ·Π½ΡΠ΅ ΠΎΡΠ΅Π½ΠΊΠΈ ΡΠΎΡΡΠ° ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΎΡΠ΅ΡΠ΅ΡΡΠ²Π΅Π½Π½ΡΡ
Π½Π°ΡΡΠ½ΡΡ
ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ. Π Π°ΡΡΡΠΈΡΠ°Π½Ρ ΠΎΡΠ½ΠΎΠ²Π½ΡΠ΅ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»ΠΈ ΠΏΡΠ±Π»ΠΈΠΊΠ°ΡΠΈΠΎΠ½Π½ΠΎΠΉ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ, ΠΊΠΎΡΠΎΡΡΠ΅ Π΄ΠΎΠ»ΠΆΠ½Ρ Π±ΡΡΡ Π΄ΠΎΡΡΠΈΠ³Π½ΡΡΡ ΠΏΡΠΎΡΠ΅ΡΡΠΈΠΎΠ½Π°Π»ΡΠ½ΡΠΌ ΠΌΠ΅Π΄ΠΈΡΠΈΠ½ΡΠΊΠΈΠΌ ΡΠΎΠΎΠ±ΡΠ΅ΡΡΠ²ΠΎΠΌ, ΡΡΠΎΠ±Ρ ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²ΠΎΠ²Π°ΡΡ ΡΠ΅Π»Π΅Π²ΡΠΌ Π±ΠΈΠ±Π»ΠΈΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΈΠΌ ΠΈΠ½Π΄ΠΈΠΊΠ°ΡΠΎΡΠ°ΠΌ, Π·Π°ΡΠ²Π»Π΅Π½Π½ΡΠΌ Π² Π£ΠΊΠ°Π·Π΅ ΠΡΠ΅Π·ΠΈΠ΄Π΅Π½ΡΠ° βΒ 599 ΠΎΡ 7 ΠΌΠ°Ρ 2012Β Π³. (ΡΠ²Π΅Π»ΠΈΡΠ΅Π½ΠΈΠ΅ Π΄ΠΎΠ»ΠΈ ΡΠΎΡΡΠΈΠΉΡΠΊΠΈΡ
ΠΏΡΠ±Π»ΠΈΠΊΠ°ΡΠΈΠΉ Π² Web of Science Π΄ΠΎ 2,44% ΠΊ 2015Β Π³.), ΠΈ Π² Β«Π‘ΡΡΠ°ΡΠ΅Π³ΠΈΠΈ ΡΠ°Π·Π²ΠΈΡΠΈΡ ΠΌΠ΅Π΄ΠΈΡΠΈΠ½ΡΠΊΠΎΠΉ Π½Π°ΡΠΊΠΈ Π΄ΠΎ 2025Β Π³.Β» ΠΠΎΠΊΠ°Π·Π°Π½ΠΎ, ΡΡΠΎ Π³Π»ΠΎΠ±Π°Π»ΡΠ½Π°Ρ Π½Π°ΡΠΊΠ°, Π² ΡΠ»ΠΎΠΆΠΈΠ²ΡΠ΅ΠΉΡΡ ΡΡΡΡΠΊΡΡΡΠ΅ ΠΊΠΎΡΠΎΡΠΎΠΉ Π½Π° Π±ΠΈΠΎΠΌΠ΅Π΄ΠΈΡΠΈΠ½ΡΠΊΠΈΠ΅ ΡΡΠ°ΡΡΠΈ ΠΏΡΠΈΡ
ΠΎΠ΄ΠΈΡΡΡ ΠΎΠΊΠΎΠ»ΠΎ 1/3 ΠΏΡΠ±Π»ΠΈΠΊΠ°ΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΌΠΈΡΠΎΠ²ΠΎΠ³ΠΎ ΠΏΠΎΡΠΎΠΊΠ°, ΡΡΠ°Π²ΠΈΡ ΠΏΠ΅ΡΠ΅Π΄ ΡΠΎΡΡΠΈΠΉΡΠΊΠΈΠΌ ΠΌΠ΅Π΄ΠΈΡΠΈΠ½ΡΠΊΠΈΠΌ ΡΠΎΠΎΠ±ΡΠ΅ΡΡΠ²ΠΎΠΌ ΠΎΡΠ΅Π½Ρ ΡΠ»ΠΎΠΆΠ½ΡΡ Π·Π°Π΄Π°ΡΡ: ΡΠ΄Π²ΠΎΠΈΡΡ Π·Π° 3 Π³ΠΎΠ΄Π° ΡΠΈΡΠ»ΠΎ ΠΏΡΠ±Π»ΠΈΠΊΠ°ΡΠΈΠΉ, ΠΈΠ½Π΄Π΅ΠΊΡΠΈΡΡΠ΅ΠΌΡΡ
Π² Web of Science. Π Π°ΡΡΠΌΠΎΡΡΠ΅Π½Ρ ΠΏΠ΅ΡΠ²ΠΎΠΎΡΠ΅ΡΠ΅Π΄Π½ΡΠ΅ ΠΈ Π½Π΅ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΠΌΡΠ΅ ΠΌΠ΅ΡΡ Π΄Π»Ρ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΈΡ ΡΡΠΎΠΉ Π·Π°Π΄Π°ΡΠΈ.
ΠΠΠΠΠΠ ΠΠ£ΠΠΠΠΠΠ¦ΠΠΠΠΠΠΠ ΠΠΠ’ΠΠΠ Π ΠΠΠ ΠΠ 2011 Π. Π ΠΠΠ Π‘ΠΠΠΠ’ΠΠΠ« Π£ΠΠΠΠΠ§ΠΠΠΠ― ΠΠΠ ΠΠΠͺΠΠΠΠ Π ΠΠΠ’ΠΠ ΠΠ’ΠΠ’ΠΠΠ‘Π’Π Π Π‘ΠΠΠ’ΠΠΠ’Π‘Π’ΠΠΠ Π‘ ΠΠΠΠΠΠΠ’ΠΠ ΠΠΠ Β«ΠΠ ΠΠΠ ΠΠΠΠ« Π€Π£ΠΠΠΠΠΠΠ’ΠΠΠ¬ΠΠ«Π₯ ΠΠΠ£Π§ΠΠ«Π₯ ΠΠ‘Π‘ΠΠΠΠΠΠΠΠΠ ΠΠΠ‘ΠΠΠΠΠΠΠΠ ΠΠ 2013β2020 ΠΠ.Β»
The scope of bibliometric research is focused on academic output of the Russian Academy of Medical Sciences (RAMS) in 2011 by analyzing the data extracted from the Web of Science database and InCites application Research Performance Profile of RAMS. Using these analytical tools trends in dynamics of publications and citing of the RAMS researchers were calculated and the level of scientific output in some biomedical subject areas was estimated. Studies revealed the great importance of international collaboration and international coauthorship for RAMS in producing papers published in established scholarly journals. Basic metrics of scientific performance that should be required to achieve the goals declared in the recent governmental policy papers were measured for RAMS institutions as well. Another problem investigated in this research is the problem of low citedness of RAMS journal papers indexed in WoS. Factors and reasons influenced on low citedness were discovered In conclusion authors set out priorities and reasonable goal-oriented efforts to achieve better results in publication activity.Β Π ΡΠ°Π±ΠΎΡΠ΅ ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½ΠΎ Π±ΠΈΠ±Π»ΠΈΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΎΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΏΡΠ±Π»ΠΈΠΊΠ°ΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΏΠΎΡΠΎΠΊΠ° ΡΡΠ΅Π½ΡΡ
Π ΠΎΡΡΠΈΠΉΡΠΊΠΎΠΉ Π°ΠΊΠ°Π΄Π΅ΠΌΠΈΠΈ ΠΌΠ΅Π΄ΠΈΡΠΈΠ½ΡΠΊΠΈΡ
Π½Π°ΡΠΊ (Π ΠΠΠ) Π² ΠΌΠ΅ΠΆΠ΄ΡΠ½Π°ΡΠΎΠ΄Π½ΠΎΠΉ Π°Π½Π°Π»ΠΈΡΠΈΠΊΠΎ-Π±ΠΈΠ±Π»ΠΈΠΎΠ³ΡΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠΈΡΡΠ΅ΠΌΠ΅ Web of Science Π·Π° 2011Β Π³. Π ΡΠ°ΠΌΠΊΠ°Ρ
ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ Π±ΡΠ» ΠΈΠ·ΡΡΠ΅Π½ ΠΏΡΠΎΡΠΈΠ»Ρ Π½Π°ΡΡΠ½ΠΎΠΉ ΠΏΡΠΎΠ΄ΡΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ Π ΠΠΠ Π² Π°Π½Π°Π»ΠΈΡΠΈΡΠ΅ΡΠΊΠΎΠΌ ΠΏΡΠΈΠ»ΠΎΠΆΠ΅Π½ΠΈΠΈ InCites. ΠΡΠΏΠΎΠ»Π½Π΅Π½ Π°Π½Π°Π»ΠΈΠ· Π΄ΠΈΠ½Π°ΠΌΠΈΠΊΠΈ ΠΏΡΠ±Π»ΠΈΠΊΠ°ΡΠΈΠΎΠ½Π½ΠΎΠΉ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΈ ΡΠΈΡΠΈΡΡΠ΅ΠΌΠΎΡΡΠΈ ΠΏΡΠ±Π»ΠΈΠΊΠ°ΡΠΈΠΉ ΡΠΎΡΡΡΠ΄Π½ΠΈΠΊΠΎΠ² ΠΈΠ½ΡΡΠΈΡΡΡΠΎΠ² Π ΠΠΠ, ΠΎΡΠ΅Π½Π΅Π½ ΡΡΠΎΠ²Π΅Π½Ρ Π½Π°ΡΡΠ½ΠΎΠΉ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΠΈΡΠ΅Π»ΡΠ½ΠΎΡΡΠΈ ΠΈ ΠΏΡΠΎΠ΄ΡΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΎΡΠ΄Π΅Π»ΡΠ½ΡΡ
ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°ΡΠ΅Π»ΡΡΠΊΠΈΡ
Π½Π°ΠΏΡΠ°Π²Π»Π΅Π½ΠΈΠΉ, Π° ΡΠ°ΠΊΠΆΠ΅ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΠΌΠ΅ΠΆΠ΄ΡΠ½Π°ΡΠΎΠ΄Π½ΠΎΠ³ΠΎ Π½Π°ΡΡΠ½ΠΎΠ³ΠΎ ΡΠΎΡΡΡΠ΄Π½ΠΈΡΠ΅ΡΡΠ²Π°. ΠΠ°Π½Π° ΠΎΡΠ΅Π½ΠΊΠ° ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²ΠΈΡ ΡΠ΅Π°Π»ΡΠ½ΡΡ
ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»Π΅ΠΉ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠΈΠ²Π½ΠΎΡΡΠΈ Π½Π°ΡΡΠ½ΠΎΠΉ Π΄Π΅ΡΡΠ΅Π»ΡΠ½ΠΎΡΡΠΈ Π ΠΠΠ ΠΏΡΠΎΠ³Π½ΠΎΠ·Π½ΡΠΌ Π·Π½Π°ΡΠ΅Π½ΠΈΡΠΌ ΠΈΠ½Π΄ΠΈΠΊΠ°ΡΠΎΡΠΎΠ² ΠΏΡΠ±Π»ΠΈΠΊΠ°ΡΠΈΠΎΠ½Π½ΠΎΠΉ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ, Π·Π°ΡΠ²Π»Π΅Π½Π½ΡΠΌ Π² ΡΡΠ΄Π΅ ΠΏΡΠΎΠ³ΡΠ°ΠΌΠΌΠ½ΡΡ
ΠΏΡΠ°Π²ΠΈΡΠ΅Π»ΡΡΡΠ²Π΅Π½Π½ΡΡ
Π΄ΠΎΠΊΡΠΌΠ΅Π½ΡΠΎΠ². ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Π° ΠΏΡΠΎΠ±Π»Π΅ΠΌΠ° ΠΎΠ±ΡΠ΅ΠΉ Π½ΠΈΠ·ΠΊΠΎΠΉ ΡΠΈΡΠΈΡΡΠ΅ΠΌΠΎΡΡΠΈ ΠΏΡΠ±Π»ΠΈΠΊΠ°ΡΠΈΠΉ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°ΡΠ΅Π»Π΅ΠΉ ΠΈΠ· Π ΠΠΠ ΠΈ ΠΎΡΡΡΠ΅ΡΡΠ²Π»Π΅Π½Π½ Π°Π½Π°Π»ΠΈΠ· ΡΠ°ΠΊΡΠΎΡΠΎΠ², Π²Π»ΠΈΡΡΡΠΈΡ
Π½Π° ΡΡΠΎΠ²Π΅Π½Ρ ΡΠΈΡΠΈΡΡΠ΅ΠΌΠΎΡΡΠΈ ΠΎΡΠ΅ΡΠ΅ΡΡΠ²Π΅Π½Π½ΡΡ
ΡΠ°Π±ΠΎΡ Π² ΠΎΠ±Π»Π°ΡΡΠΈ Π±ΠΈΠΎΠΌΠ΅Π΄ΠΈΡΠΈΠ½Ρ. Π Π·Π°ΠΊΠ»ΡΡΠ΅Π½ΠΈΠΈ Π΄Π°ΡΡΡΡ ΡΠ΅ΠΊΠΎΠΌΠ΅Π½Π΄Π°ΡΠΈΠΈ ΠΏΠΎ ΡΠΎΡΡΡ ΠΏΡΠ±Π»ΠΈΠΊΠ°ΡΠΈΠΎΠ½Π½ΠΎΠΉ ΠΈ ΡΠΈΡΠ°ΡΠ½ΠΎΠΉ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ Π΄Π»Ρ ΠΏΡΠ±Π»ΠΈΠΊΠ°ΡΠΈΠΉ Π ΠΠΠ.Β
Effects of rapid prey evolution on predator-prey cycles
We study the qualitative properties of population cycles in a predator-prey
system where genetic variability allows contemporary rapid evolution of the
prey. Previous numerical studies have found that prey evolution in response to
changing predation risk can have major quantitative and qualitative effects on
predator-prey cycles, including: (i) large increases in cycle period, (ii)
changes in phase relations (so that predator and prey are cycling exactly out
of phase, rather than the classical quarter-period phase lag), and (iii)
"cryptic" cycles in which total prey density remains nearly constant while
predator density and prey traits cycle. Here we focus on a chemostat model
motivated by our experimental system [Fussmann et al. 2000,Yoshida et al. 2003]
with algae (prey) and rotifers (predators), in which the prey exhibit rapid
evolution in their level of defense against predation. We show that the effects
of rapid prey evolution are robust and general, and furthermore that they occur
in a specific but biologically relevant region of parameter space: when traits
that greatly reduce predation risk are relatively cheap (in terms of reductions
in other fitness components), when there is coexistence between the two prey
types and the predator, and when the interaction between predators and
undefended prey alone would produce cycles. Because defense has been shown to
be inexpensive, even cost-free, in a number of systems [Andersson and Levin
1999, Gagneux et al. 2006,Yoshida et al. 2004], our discoveries may well be
reproduced in other model systems, and in nature. Finally, some of our key
results are extended to a general model in which functional forms for the
predation rate and prey birth rate are not specified.Comment: 35 pages, 8 figure
Stability of Spatial Optical Solitons
We present a brief overview of the basic concepts of the soliton stability
theory and discuss some characteristic examples of the instability-induced
soliton dynamics, in application to spatial optical solitons described by the
NLS-type nonlinear models and their generalizations. In particular, we
demonstrate that the soliton internal modes are responsible for the appearance
of the soliton instability, and outline an analytical approach based on a
multi-scale asymptotic technique that allows to analyze the soliton dynamics
near the marginal stability point. We also discuss some results of the rigorous
linear stability analysis of fundamental solitary waves and nonlinear impurity
modes. Finally, we demonstrate that multi-hump vector solitary waves may become
stable in some nonlinear models, and discuss the examples of stable
(1+1)-dimensional composite solitons and (2+1)-dimensional dipole-mode solitons
in a model of two incoherently interacting optical beams.Comment: 34 pages, 9 figures; to be published in: "Spatial Optical Solitons",
Eds. W. Torruellas and S. Trillo (Springer, New York
Stability of trapped Bose-Einstein condensates
In three-dimensional trapped Bose-Einstein condensate (BEC), described by the
time-dependent Gross-Pitaevskii-Ginzburg equation, we study the effect of
initial conditions on stability using a Gaussian variational approach and exact
numerical simulations. We also discuss the validity of the criterion for
stability suggested by Vakhitov and Kolokolov. The maximum initial chirp
(initial focusing defocusing of cloud) that can lead a stable condensate to
collapse even before the number of atoms reaches its critical limit is obtained
for several specific cases. When we consider two- and three-body nonlinear
terms, with negative cubic and positive quintic terms, we have the conditions
for the existence of two phases in the condensate. In this case, the magnitude
of the oscillations between the two phases are studied considering sufficient
large initial chirps. The occurrence of collapse in a BEC with repulsive
two-body interaction is also shown to be possible.Comment: 15 pages, 11 figure
Demonstration of the temporal matter-wave Talbot effect for trapped matter waves
We demonstrate the temporal Talbot effect for trapped matter waves using
ultracold atoms in an optical lattice. We investigate the phase evolution of an
array of essentially non-interacting matter waves and observe matter-wave
collapse and revival in the form of a Talbot interference pattern. By using
long expansion times, we image momentum space with sub-recoil resolution,
allowing us to observe fractional Talbot fringes up to 10th order.Comment: 17 pages, 7 figure
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