Zobrazeno 1 - 10
of 287
pro vyhledávání: '"PARVANOV, P."'
A new Goodman-Sharma modification of the Baskakov operator is presented for approximation of bounded and continuous on $[0,\,\infty)$ functions. In our study on the approximation error of the proposed operator we prove direct and strong converse theo
Externí odkaz:
http://arxiv.org/abs/2412.04586
Here we study the approximation properties of a modified Goodman-Sharma operator recently considered by Acu and Agrawal in 2019. This operator is linear but not positive. It has the advantage of a higher order of approximation of functions compared w
Externí odkaz:
http://arxiv.org/abs/2410.06908
Spatial joins are among the most time-consuming queries in spatial data management systems. In this paper, we propose SwiftSpatial, a specialized accelerator architecture tailored for spatial joins. SwiftSpatial contains multiple high-performance joi
Externí odkaz:
http://arxiv.org/abs/2309.16520
Autor:
Maria Handzhiyska, Rumiana Ganeva, Dimitar Parvanov, Margarita Ruseva, Petar Eftimov, Vilyana Georgieva, Denitsa Velikova, Georgi Stamenov
Publikováno v:
Reproduction and Fertility, Vol 5, Iss 2, Pp 1-9 (2024)
The objective of this study was to compare the motility, morphology, and levels of DNA fragmentation of spermatozoa subjected to conventional swim-up or cumulus matrix (CM) sperm selection. Semen samples were collected from 60 normozoospermic men at
Externí odkaz:
https://doaj.org/article/581a8763bb284a32bf0b17ddb7ce0036
Autor:
Dimitar Metodiev, Dimitar Parvanov, Margarita Ruseva, Rumiana Ganeva, Maria Handzhiyska, Nina Vidolova, Ani Chavoushian, Savina Hadjidekova, Georgi Stamenov
Publikováno v:
Diagnostics, Vol 14, Iss 15, p 1642 (2024)
Adenomyosis and endometriosis are distinct gynecological disorders characterized by ectopic growth of endometrial tissue. Their etiology remains unclear, but stem cells have been implicated in both. The aim of this study was to investigate and compar
Externí odkaz:
https://doaj.org/article/eada66cfd6304df79a83dde7feee063e
Autor:
Metodiev D., Gegova A., Ruseva M., Ganeva R., Parvanov D., Marinov R., Georgiev D., Staneva-Mitkova D., Stamenov G.
Publikováno v:
Acta Medica Bulgarica, Vol 50, Iss 2, Pp 66-72 (2023)
The most common primary cardiac tumors are myxomas, while cardiac hamartomas are rare. Cardiac hamartomas may constitute manifestation of a genetic disorder such as tuberous sclerosis, or could be diagnosed independently as a solitary lesion. We pres
Externí odkaz:
https://doaj.org/article/eadc67fb74174c5fb4595f050083327c
Publikováno v:
Folia Medica, Vol 65, Iss 2, Pp 331-335 (2023)
Cardiac luxation is a rare condition in cases of blunt thoracic trauma, yet it is quite fatal. We present a case of a 28-year-old man, admitted to the emergency room after a motorcycle accident in a hemodynamically unstable condition and radiographic
Externí odkaz:
https://doaj.org/article/5980a87446434cbfadd8ad038b63ce44
Autor:
Petar Parvanov
Publikováno v:
Приноси към българската археология, Vol 13 (2023)
Externí odkaz:
https://doaj.org/article/fa3d8f7c28ed4df5b91efcc9b9fdac36
Autor:
Dimitar Parvanov, Rumiana Ganeva, Nina Vidolova, Kristina Nikolova, Magdalena Vasileva, Tihomir Totev, Georgi Stamenov
Publikováno v:
Biotechnology & Biotechnological Equipment, Vol 36, Iss 1, Pp 425-432 (2022)
AbstractPlatelet-rich plasma (PRP) is used for successful regeneration of female reproductive tissues. However, little is known about the effect of ovarian PRP treatment on oocyte and embryo quality. The objective of our study was to assess the role
Externí odkaz:
https://doaj.org/article/980c0a4a7f4f4f4da6d093d4a9c89433
Autor:
Antoaneta Mlachkova, Velitchka Dosseva-Panova, Ivan Ivanov, Dimitar Parvanov, Hristina Maynalovska
Publikováno v:
Journal of IMAB, Vol 28, Iss 4, Pp 4634-4639 (2022)
Purpose: The current study investigates the effectiveness of two surgical protocols for the treatment of periodontitis (Stage III or Stage IV) in the presence of angular bone defects. Materials and methods: Twenty patients diagnosed with periodontit
Externí odkaz:
https://doaj.org/article/7bc75bf9c41746658e4e54c586914bad