User profiles for D. Boyadzhiev
Doychin Boyadzhievдоцент по математика, ПУ "П. Хилендарски" Verified email at uni-plovdiv.bg Cited by 312 |
Time series analysis and forecasting for air pollution in small urban area: an SARIMA and factor analysis approach
… The general type SARIMA is then noted as ARIMA (p, d, q) (P, D, Q) s , where P is the number
of seasonal autoregressive (SAR) terms, D is the order of seasonal differencing and Q is …
of seasonal autoregressive (SAR) terms, D is the order of seasonal differencing and Q is …
MRI versus 18F-FDG-PET/CT for detecting bone marrow involvement in multiple myeloma: diagnostic performance and clinical relevance
FE Lecouvet, D Boyadzhiev, L Collette, M Berckmans… - European …, 2020 - Springer
… c, d Corresponding reformatted sagittal PET and CT images show no evident focus of
tracer uptake or osteolysis. The hemangioma is visible on the CT image (arrowhead in …
tracer uptake or osteolysis. The hemangioma is visible on the CT image (arrowhead in …
Stability analysis of linear distributed order fractional systems with distributed delays
In the present work we study linear systems with distributed delays and distributed order
fractional derivatives based on Caputo type single fractional derivatives, with respect to a …
fractional derivatives based on Caputo type single fractional derivatives, with respect to a …
Integral representation of solutions of fractional system with distributed delays
D Boyadzhiev, H Kiskinov… - Integral Transforms and …, 2018 - Taylor & Francis
The aim of the present paper is to obtain an integral representation of the solution of the
Cauchy problem with discontinuous and continuous initial conditions for linear fractional …
Cauchy problem with discontinuous and continuous initial conditions for linear fractional …
Higher sensitivity with the lever sign test for diagnosis of anterior cruciate ligament rupture in the emergency department
…, FE Lecouvet, A Benitez Masip, D Boyadzhiev… - Archives of orthopaedic …, 2022 - Springer
Introduction The objective of this study was to assess the diagnostic value of the “lever sign
test” to diagnose ACL rupture and to compare this test to the two most commonly used, the …
test” to diagnose ACL rupture and to compare this test to the two most commonly used, the …
Risk factors for development of chronic periodontitis in Bulgarian patients (pilot research)
…, N Musurlieva, D Boyadzhiev - Biotechnology & …, 2014 - Taylor & Francis
The aim of this work was to assess the risks and analyse the risk factors for development of
chronic periodontitis in Bulgarian patients. The quality of life was investigated in a cohort of …
chronic periodontitis in Bulgarian patients. The quality of life was investigated in a cohort of …
Classification of different types of beer according to their colour characteristics
Twenty-two samples from different beers have been investigated in two colour systems-XYZ
and SIELab-and have been characterised according to their colour parameters. The goals of …
and SIELab-and have been characterised according to their colour parameters. The goals of …
Assessing the true cost of strategic-beta ETFs
…, H Bioy, D Boyadzhiev - The Journal of Index …, 2016 - search.proquest.com
The report examines the differences in costs between strategic-beta (smart beta) exchange-traded
funds (ETFs) and their more ordinary passive peers. Cost is an important …
funds (ETFs) and their more ordinary passive peers. Cost is an important …
Parametric time-series analysis of daily air pollutants of city of Shumen, Bulgaria
…, S Gocheva-Ilieva, D Boyadzhiev - AIP Conference …, 2012 - pubs.aip.org
The urban air pollution is one of the main factors determining the ambient air quality, which
affects on the human health and the environment. In this paper parametric time series models …
affects on the human health and the environment. In this paper parametric time series models …
[PDF][PDF] Cyber Intelligence Decision Support in the Era of Big Data
Z Minchev, G Dukov, D Boyadzhiev - ESGI - oxford-emirates.ox.ac.uk
1. Problem Definition Three key moments have to be solved for this complex problem proper
approaching:(i) selection of suitable formalism for fast and easy modelling, implementing …
approaching:(i) selection of suitable formalism for fast and easy modelling, implementing …