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Titre: Joint principal component: wavelet analysis of atmospheric teleconnection: the North Atlantic Oscillation case.(Report) Auteur:Khokhlov, Valeriy; Romanova, Anna Sujet:Weather -- Analysis ; North Atlantic Oscillation -- Analysis ; Climate Cycles -- Analysis Description:
Byline: Valeriy Khokhlov (1), Anna Romanova (2) Keywords: Wavelet analysis; Principal component analysis; North Atlantic Oscillation; Synoptic conditions Abstract: The impact of the North Atlantic Oscillation (NAO) on synoptic conditions in Ukraine can not be considered as fully defined as the territory of Ukraine is located at the transitional boundary of processes associated with the NAO. As a rule, common methods based on the principal component analysis (PCA) can not reveal the impact of the NAO. Moreover, the analysis of synoptic-scale processes based on the data with the one-day (or lesser) discreteness is affected by noise. In this paper, the wavelet analysis is used jointly with the PCA to determine time intervals when a linkage between the NAO and processes over Ukraine was significant. Such an approach allowed revealing the time intervals during the cold seasons, when simultaneous variations of synoptic conditions in North Atlantic and Eastern Europe occurred at quasi-synoptic time scales. Usually, that process is observed not very often, but simultaneous variations can be in progress during a few weeks. The coherent changes of synoptic conditions do not depend on the strength and phase of the NAO and can be both in-phase and anti-phase. The significant wavelet coherence is probably registered when two intensive synoptic processes different from general synoptic situation are observed. Author Affiliation: (1) Department of Theoretical Meteorology and Weather Forecasts, Odessa State Environmental University, Lvivska Str. 15, Odessa, 65016, Ukraine (2) Department of Higher and Applied Mathematics, Odessa State Environmental University, Lvivska Str. 15, Odessa, 65016, Ukraine Article History: Registration Date: 04/06/2013 Online Date: 15/06/2013 Article note: Electronic supplementary material The online version of this article (doi: 10.1007/s00477-013-0757-3) contains supplementary material, which is available to authorized users.
Fait partie de:
Stochastic Environmental Research and Risk Assessment (SERRA), Feb, 2014, Vol.28(2), p.369(13)
Titre: The Peculiarities of the Outbound Tourist Market of China Auteur:Romanova Anna A Sujet:Chinese Tourist Market ; International Tourism ; Project «one Belt ; One Way» ; Tourism Industry ; Excursion Tourism ; on-Line Travel ; Visa Liberalization ; Economics Description:
The outbound tourist market of China was analyzed as the priority target audience of consumers of the Ukrainian tourism product. A wording of the diplomatic preconditions for development of tourism relations with the People’s Republic of China and the partner countries of the economic and humanitarian project «One Belt, One Way» has been provided. The main characteristics of the outbound Chinese tourist market have been allocated and researched: hyper size; significant purchasing power; sustained growth pace; priority of Asian destinations, at the same time emergence of interest in the EU and Russia; organization, group character; seasonality; short-term traveling; cluster (combined) travels; predominance of women tourists; priority of on-line booking of tours; peculiarities of travel behavior; predominance of certain types of tourism; preference of national Chinese cuisine, etc. These peculiarities of the Chinese outbound tourist market must be considered when developing tourism product for the Chinese and creating a strategy to increase the tourist flows from China to any destination and tourism facility. Recommendations for the entities of tourism activity which plan to work with the Chinese consumer of the national tourism product have been formulated.
Fait partie de:
Bìznes Inform, 01 December 2017, Vol.12(478), pp.48-53
2222-4459 (ISSN); 2311-116X (E-ISSN)
Titre: Analysis of Scheduling Problem on Two Machines with Partial Precedence Order on the Set of Jobs Auteur:Romanova, Anna Sujet:Mathematics - Optimization And Control Description:
In this paper, we consider an NP-hard problem of scheduling a set of jobs of equal processing time on two machines, given a partial precedence order on the set of jobs, with an objective to minimize the makespan. An approximation algorithm is proposed for this problem with a tight approximation bound. Polynomial solvability of the problem is proved in the case when each job on the first machine is in precedence relation with two jobs on the second machine. Comment: 10 pages, in Russian
1412.4858 (ARXIV ID)
Implementation of a urogynecology-specific enhanced recovery after surgery (ERAS) pathway
Carter-Brooks, Charelle M, Du, Angela L, Ruppert, Kristine M, Romanova, Anna L, Zyczynski, Halina M
American Journal of Obstetrics and Gynecology, November 2018, Vol.219(5), pp.495.e1-495.e10
[Revue évaluée par les pairs]
Side-chain prototropic tautomerism of 4-hydroxyfuroxans in methylation reactions
Fershtat, Leonid L, Epishina, Margarita A, Ovchinnikov, Igor V, Struchkova, Marina I, Romanova, Anna A, Ananyev, Ivan V, Makhova, Nina N
Tetrahedron Letters, 14 December 2016, Vol.57(50), pp.5685-5689
[Revue évaluée par les pairs]