<abstract xmlns="http://www.w3.org/1999/xhtml">

Accelerating computational processes is paramount in numerical infrastructure development, particularly in applications such as the finite element method (FEM) and extensive calculations for simulating 3D processes in materials. In this work, we introduce a novel technique for computing the magnetostatic field of an ellipsoid particle, leveraging CUDA on a graphical card for parallel processing. The implementation on a GPU resulted in a remarkable 20-fold improvement in calculation speed. This achievement not only expedites research tasks, but also enables the exploration of larger and more intricate simulations, facilitating quicker model refinements and deeper insights into material behaviours under various conditions. The utilization of GPU computing aligns with the broader trend in scientific research and engineering, offering a versatile solution for diverse computational challenges beyond this specific task of magnetism. Overall, our work contributes to the ongoing effort to harness high-performance computing (HPC) technologies for accelerated and more efficient simulations in materials science and related fields.
</abstract>

“Alexandru Ioan Cuza” University, Research Center with Integrated Techniques for Atmospheric Aerosol Investigation in Romania

GPGPU Programming for Dipolar Field Calculation

<abstract xmlns="http://www.w3.org/1999/xhtml">

The purpose of this paper is a general climatic characterization of the 2023 summer in the region of Moldavia, in eastern part of Romania, but with focus on the analysis of the context in which the most intense tropical air advections occurred in this region. The most significant and lasting tropical air waves were in July and August. From a thermal point of view, June had only one interval in which the maximum temperatures exceeded, for 3 consecutive days, the threshold of 30ºC (between 22nd and 24th of June). Instead, in July there were three intervals in which the maximum temperature exceeded this threshold, for more than 3 days in a row (between 01st - 06th, 15th - 22nd, 24th - 26th of July), and August had the longest such intervals (between 03rd – 06th, 13th – 29th of August). Also, in August, there were four consecutive days with maximum temperatures that exceeded the heat wave threshold (26th -29th of August). Without achieving new absolute temperature records (the highest maximum temperature in this interval being 39˚C at the Iași meteorological station, on August 28th), the last heat wave was notable in terms of duration of manifestation. Considering the definition given by the World Meteorological Organization (WMO) in 2020, according to which heat waves are considered those periods of time that are unusually warm in relation to multi-year averages and that last more than 2 consecutive days, we can frame the tropical air advection of July and August in the category of heat waves.
</abstract>

“Alexandru Ioan Cuza” University of Iaşi

Heat Waves Analysis of 2023 Summer in Eastern Part of Romania and Atmospheric Instability Events Which Succeeded Between Them

<abstract xmlns="http://www.w3.org/1999/xhtml">

Severe weather phenomena are those meteorological phenomena that can temporarily become dangerous for the population, by threatening its safety or can cause material damage in a certain area. In order for the authorities and the population to be notified in time, meteorological warnings are issued. Therefore, issuing a warning will be taken into account according to the degree of severity of the forecasted meteorological phenomenon and will take into account its extent, how it will evolve and the degree of vulnerability of the regions to be affected. For this purpose, warning thresholds have been established for certain meteorological phenomena that can become dangerous, and based on this, color codes have been established, which gradually show the dangerousness of the phenomena that are about to occur. In the cold season, the blizzard is part of the category of dangerous meteorological phenomena, even more so when they are early or late, in the months of November or April. If the late ones are more frequent, (in the last 10 years there were 2 blizzard events, in 2017 and 2023), the early ones have an even lower frequency, and sometimes it can be a derivative of this phenomenon, because they are not met all the blizzard conditions. This study analyzes a phenomenon that took place in the second decade of November 2023 in the region of Moldova and which was associated with the blizzard phenomenon.
</abstract>

Short Blizzard Episode in the Northeastern Part of Romania, in the Second Decade of November 2023

AHEAD OF PRINT

Volume 70 (2024): Issue 1 (January 2024)

Volume 69 (2023): Issue 1-4 (December 2023)

Volume 68 (2022): Issue 4 (December 2022)

BULETINUL INSTITUTULUI POLITEHNIC DIN IAȘI. Secția Matematica. Mecanică Teoretică. Fizică

Volume 68 (2022): Issue 1 (March 2022)

Volume 67 (2021): Issue 4 (December 2021)

Volume 67 (2021): Issue 3 (September 2021)

Volume 67 (2021): Issue 2 (June 2021)

Volume 67 (2021): Issue 1 (March 2021)

BULLETIN OF THE POLYTECHNIC INSTITUTE FROM IAȘI, Section Mathematics, Theoretical Mechanics, Physics – BIPMF (ISSN-L 1224-7863) is an international journal, with quarterly appearance, for the free publication of research results in theoretical and mathematical physics, mechanics, technical and applied physics, material sciences.  The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes physics, mechanics and mathematics, and given their importance in material sciences, interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, surfaces/interfaces are welcomed if they demonstrate insight into physics, seeking to understand mathematical basis of physical phenomena, and solve problems in physics via mathematical approaches. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.  BIMMF aims to enhance the interdisciplinary research by connecting the fundamental sciences as physics and mathematics with applicative research concerning the relationships between structure, processing, properties, and performance of materials. It also promotes international exchange of scientific activities.  The journal publishes original research, focused review articles that examine the state of the art, book reviews, technical notes, case studies, and preliminary communications, with no restriction on the length of the papers.  Archiving  Sciendo archives the contents of this journal in Portico - digital long-term preservation service of scholarly books, journals and collections.  Plagiarism Policy  The editorial board is participating in a growing community of Similarity Check System's users in order to ensure that the content published is original and trustworthy. Similarity Check is a medium that allows for comprehensive manuscripts screening, aimed to eliminate plagiarism and provide a high standard and quality peer-review process. sistemantiplagiat.ro/ 

BULETINUL INSTITUTULUI POLITEHNIC DIN IAȘI. Secția Matematica. Mecanică Teoretică. Fizică

Volume 70 (2024): Issue 1 (January 2024)

GPGPU Programming for Dipolar Field Calculation

Heat Waves Analysis of 2023 Summer in Eastern Part of Romania and Atmospheric Instability Events Which Succeeded Between Them

Short Blizzard Episode in the Northeastern Part of Romania, in the Second Decade of November 2023

Buscar

Todos los volúmenes y ediciones en esta revista