Andrey Ronzhin

Prof. Andrey Ronzhin

SPIIRAS, SPC RAS, Saint Petersburg, Sankt-Peterburg, Russia
orcid

Research Focus & Metrics

Academic Career Length

22Years (2005-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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16 November 2021 in Mathematics
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Journal Article
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Sergei SoldatenkoSergei Soldatenko
Sergei Soldatenko
ABAlexey Valer\evich Bogomolov
Alexey Valer\evich Bogomolov
Andrey RonzhinAndrey Ronzhin
Andrey Ronzhin
The current climate change, unlike previous ones, is caused by human activity and is characterized by an unprecedented rate of increase in the near-surface temperature and an increase in the frequency and intensity of hazardous weather and climate events. To survive, society must be prepared to implement adaptation strategies and measures to mitigate the negative effects of climate change. This requires, first of all, knowledge of how the climate will change in the future. To date, mathematical modelling remains the only method and effective tool that is used to predict the climate system’s evolution under the influence of natural and anthropogenic perturbations. It is important that mathematics and its methods and approaches have played a vital role in climate research for several decades. In this study, we examined some mathematical methods and approaches, primarily, mathematical modelling and sensitivity analysis, for studying the Earth’s climate system, taking into account the dependence of human health on environmental conditions. The essential features of stochastic climate models and their application for the exploration of climate variability are examined in detail. As an illustrative example, we looked at the application of a low-order energy balance model to study climate variability. The effects of variations in feedbacks and the climate system’s inertia on the power spectrum of global mean surface temperature fluctuations that characterized the distribution of temperature variance over frequencies were estimated using a sensitivity analysis approach. Our confidence in the obtained results was based on the satisfactory agreement between the theoretical power spectrum that was derived from the energy balance model and the power spectrum that was obtained from observations and coupled climate models, including historical runs of the CMIP5 models.


1 January 2014 in Speech Communication
Verified
Journal Article
Closed access
AKAlexey Karpov
Alexey Karpov
KMKonstantin Markov
Konstantin Markov
IKIrina Kipyatkova
Irina Kipyatkova
DVDaria Vazhenina
Daria Vazhenina
Andrey RonzhinAndrey Ronzhin
Andrey Ronzhin

14 July 2025 in Land
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Journal Article
Open access
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Andrey RonzhinAndrey Ronzhin
Andrey Ronzhin
Aleksandra FigurekAleksandra Figurek
Aleksandra Figurek
VSVladimir Surovtsev
Vladimir Surovtsev
KDKhapsat Dibirova
Khapsat Dibirova
The European Union’s developing rural development plan places digital and precision agriculture at the centre of agricultural modernisation and economic development. This article examines how agricultural practices in rural EU regions are being influenced by smart technology, such as drones, IoT sensors, satellite-based research, and AI-driven platforms, through an analysis of recent data from sources across the European Union. This study applies a mixed-methods approach, combining quantitative analysis of strategic policy documents and EU databases, to evaluate the ways in which precision agriculture reduces input consumption, increases productivity, reduces labour shortages and rural area depopulation, and improves sustainability. By investing in infrastructure, developing communities for data exchange, and organising training for farmers, European policies such as the Strategic Plans of the Common Agricultural Policy (CAP), the SmartAgriHubs initiative, and the AgData program actively encourage the transition to digital agriculture. Cyprus is analysed as a case study to show how targeted investments and initiatives supported by the EU can help smaller countries, with limited natural resources, to realise the benefits of digital transformation in agriculture. A special focus is placed on how solutions adapted to agro-climatic and socioeconomic conditions can contribute to strengthening the competitiveness of the agricultural sector, attracting young people to get involved in this field and opening up new economic opportunities. The results of previous research indicate that digital agriculture not only improves productivity but also proves to be a strategic mechanism for attracting and retaining young people in rural areas. Thus, this work additionally contributes to the broader goal of the European Union—the development of smart, inclusive, and sustainable rural areas, in which digital technologies are not only seen as tools for efficiency but also as key means for integrated and long-term rural development.
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12 September 2009 in Pattern Recognition and Image Analysis
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Journal Article
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Alexey KarpovAlexey Karpov
Alexey Karpov
Andrey RonzhinAndrey Ronzhin
Andrey Ronzhin
A multimodal interactive dialogue automaton (kiosk) for self-service is presented in the paper. Multimodal user interface allow people to interact with the kiosk by natural speech, gestures additionally to the standard input and output devices. Architecture of the kiosk contains key modules of speech processing and computer vision. An array of four microphones is applied for far-field capturing and recording of user’s speech commands, it allows the kiosk to detect voice activity, to localize sources of desired speech signals, and to eliminate environmental acoustical noises. A noise robust speaker-independent recognition system is applied to automatic interpretation and understanding of continuous Russian speech. The distant speech recognizer uses grammar of voice queries as well as garbage and silence models to improve recognition accuracy. Pair of portable video-cameras are applied for vision-based detection and tracking of user’s head and body position inside of the working area. Russian-speaking talking head serves both for bimodal audio-visual speech synthesis and for improvement of communication intelligibility by turning the head to an approaching client. Dialogue manager controls the flow of dialogue and synchronizes sub-modules for input modalities fusion and output modalities fission. The experiments made with the multimodal kiosk were directed to cognitive and usability studies of human-computer interaction by different communication means

27 August 2011
Verified
Conference Paper
Closed access
Alexey KarpovAlexey Karpov
Alexey Karpov
IKIrina Kipyatkova
Irina Kipyatkova
Andrey RonzhinAndrey Ronzhin
Andrey Ronzhin