Ivan Ivanov
Biographic Data
| ID | 199907 |
|---|---|
| NAME | Ivan Ivanov |
| GIVEN NAMES | Ivan |
| FAMILY NAME | Ivanov |
| SIGNATURE | IVANOV I |
| AFFILIATIONS | Sofia University "St. Kliment Ohridski" |
| ORCID | 0000-0001-7519-9657 |
| VERIFIED | Yes |
| TOTAL WORKS | 16 |
| TOTAL CITATIONS | 24 |
| WORKS AS AUTHOR | 16 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 2011 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 2 |
Large-Scale Modeling of Urban Rooftop Solar Energy Potential Using UAS-Based Digital Photogrammetry and GIS Spatial Analysis
Urban rooftop photovoltaic systems represent a substantial yet still underutilized renewable energy resource, particularly in high-density residential environments. Accurate large-scale assessment of rooftop solar potential, however, remains challenging due to the complex geometry of urban morphology and the limited availability of high-resolution geospatial data. This study presents a large-scale methodological framework for estimating the theor…
Low-Carbohydrate (Ketogenic) Diet in Children with Obesity
Background: For decades, the ketogenic diet has been successfully used for the treatment of obesity, metabolic syndrome, and type 2 diabetes. The mechanisms through which it affects metabolism are not fully understood, but the hormonal changes that occur during ketogenic nutrition are likely to play an important role. Objectives: To investigate the effect of the ketogenic diet on various hormones associated with obesity and the accompanying metab…
A machine learning and Anova-based approach to model financial predictors for corporate failure in imbalanced dataset
This study meticulously explores the crucial elements precipitating corporate failures in Taiwan during the decade from 1999 to 2009. It proposes a new methodology, combining ANOVA and tuning the parameters of the classification so that its functional form describes the data best. Our analysis reveals the ten paramount factors, including Return on Capital ROA(C) before interest and depreciation, debt ratio percentage, consistent EPS across the la…
Institutional transformation of the children’s after-sсhool sector in post-Soviet countries
Emotional and Behavioral Problems of Children with ASD—The Lessons That We Learned from the Pandemic
The data available for changes in the behavior and emotional state of children with ASD (autism spectrum disorder) in lockdown situations are controversial and scarce. In our research, we compare results before the first COVID-19 lockdown of 21 children with ASD and 21 typically developing children, four to five years of age with those obtained immediately after. The study attempts to answer the question of whether there are changes in the levels…
Gender-Role Stereotypes in the Bulgarian Family
This article reports a representative quantitative and qualitative study covering the entire territory of Bulgaria, related to the analysis of stereotypes regarding male and female roles in the family and in the society. The results of the study indicate that the factor “age” is significant in relation to attitudes towards the social roles of men and women in the modern family, including in relation to domestic violence. The interpretation of the…
Transformation of extracurricular education in post-Soviet countries
Geochemical and petrographic investigation of the provenance of white marble decorative elements from the Roman Villa Armira in south-eastern Bulgaria
The paper presents evidence of Roman marble production in the Balkan region, specifically from the south-eastern Rhodope Mountain area (modern Bulgaria) and Armira. Although the Roman marble trade and production in antiquity are well known in Prokonnesos, Thasos, and several other production sites, marble deposits from inland Thrace have received far less attention. In 2018-2019, a systematic survey of south-eastern Bulgaria (Roman Thrace) was ca…
Diálogos continentais sobre comunicação em saúde em tempos de pandemia
Esta publicação, a 6a da série LEIASS (Linha Editorial Internacional de Apoio aos Sistemas de Saúde), é fruto dos esforços conjuntos do Conselho Nacional de Secretários de Saúde do Brasil (CONASS) e do Instituto de Higiene e Medicina Tropical da Universidade Nova de Lisboa em reunir artigos de destacados autores, de diferentes países, sobre o [...]
Une approche communicationnelle participative pour la vaccination et la prévention contre la grippe en milieu hospitalier. De la grippe saisonnière à la Covid-19
Cet article présente les résultats d’une recherche — action menée au sein d’un hôpital situé à Ottawa, au cœur de la capitale canadienne. Elle vise à augmenter le taux de vaccination contre l’influenza auprès du personnel infirmier et s’est déroulée en deux temps. Tout d’abord, nous avons réalisé un diagnostic des opinions des infirmières/ers de l’hôpital via deux groupes de discussions. Ensuite, nous avons élaboré des principes stratégiques de c…
Epilepsy in Children with Autistic Spectrum Disorder
The comorbidity of autistic spectrum disorder (ASD) and epilepsy has been widely discussed but many questions still remain unanswered. The aim of this study was to establish the occurrence of epilepsy among children with ASD to define the type of epileptic seizures and syndromes, the age of onset of epilepsy, EEG abnormalities, the used antiepileptic drugs and the therapeutic responses for seizures and autistic behavior, as well as to find some c…
An Individualized Approach to Neuroplasticity After Early Unilateral Brain Damage
Introduction: Reorganization after early lesions in the developing brain has been an object of extensive scientific work, but even growing data from translational neuroscience studies in the last 20 years does not provide unified factors for prediction of type of reorganization and rehabilitation potential of patients with unilateral cerebral palsy (UCP) due to pre/perinatal insult. Aim: To analyze the type of motor, language, and sensory brain r…
Globalization and the Quest for a 'Smart' Foreign Policy
Globalization continues to be a growing trend from the economy, security, and even the individual as ideas are rapidly exchanged between different cultures. State-actors, although still a critical component, are competing for influence with the private sector, transnational movements, international media, and even small NGOs. In this globalized world nations must adopt the concept of ‘smart’ foreign policy. The basic idea of ‘smart’ foreign polic…
Measuring sustainable governance in the European Union
This paper examines the problem of measuring sustainable governance in the European Union (EU-27) through the use of duality and the Slutsky equation. The proposed methodology is based on the application of a three-dimensional optimisation model, where the arguments of the objective (sustainable social welfare) function are economic goods that contribute to sustainable economic growth; environmental goods that provide for sustainable environmenta…
Host–microbe interactions in neonatal intestinal development. Role of early nutrition
A more careful look at the syntax-discourse interface
A more careful look at the syntax-discourse interface
Geochemical and petrographic investigation of the provenance of white marble decorative elements from the Roman Villa Armira in south-eastern Bulgaria
The paper presents evidence of Roman marble production in the Balkan region, specifically from the south-eastern Rhodope Mountain area (modern Bulgaria) and Armira. Although the Roman marble trade and production in antiquity are well known in Prokonnesos, Thasos, and several other production sites, marble deposits from inland Thrace have received far less attention. In 2018-2019, a systematic survey of south-eastern Bulgaria (Roman Thrace) was ca…
Measuring sustainable governance in the European Union
This paper examines the problem of measuring sustainable governance in the European Union (EU-27) through the use of duality and the Slutsky equation. The proposed methodology is based on the application of a three-dimensional optimisation model, where the arguments of the objective (sustainable social welfare) function are economic goods that contribute to sustainable economic growth; environmental goods that provide for sustainable environmenta…
Host–microbe interactions in neonatal intestinal development. Role of early nutrition
A more careful look at the syntax-discourse interface
Globalization and the Quest for a 'Smart' Foreign Policy
Globalization continues to be a growing trend from the economy, security, and even the individual as ideas are rapidly exchanged between different cultures. State-actors, although still a critical component, are competing for influence with the private sector, transnational movements, international media, and even small NGOs. In this globalized world nations must adopt the concept of ‘smart’ foreign policy. The basic idea of ‘smart’ foreign polic…
Epilepsy in Children with Autistic Spectrum Disorder
The comorbidity of autistic spectrum disorder (ASD) and epilepsy has been widely discussed but many questions still remain unanswered. The aim of this study was to establish the occurrence of epilepsy among children with ASD to define the type of epileptic seizures and syndromes, the age of onset of epilepsy, EEG abnormalities, the used antiepileptic drugs and the therapeutic responses for seizures and autistic behavior, as well as to find some c…
An Individualized Approach to Neuroplasticity After Early Unilateral Brain Damage
Introduction: Reorganization after early lesions in the developing brain has been an object of extensive scientific work, but even growing data from translational neuroscience studies in the last 20 years does not provide unified factors for prediction of type of reorganization and rehabilitation potential of patients with unilateral cerebral palsy (UCP) due to pre/perinatal insult. Aim: To analyze the type of motor, language, and sensory brain r…
Une approche communicationnelle participative pour la vaccination et la prévention contre la grippe en milieu hospitalier. De la grippe saisonnière à la Covid-19
Cet article présente les résultats d’une recherche — action menée au sein d’un hôpital situé à Ottawa, au cœur de la capitale canadienne. Elle vise à augmenter le taux de vaccination contre l’influenza auprès du personnel infirmier et s’est déroulée en deux temps. Tout d’abord, nous avons réalisé un diagnostic des opinions des infirmières/ers de l’hôpital via deux groupes de discussions. Ensuite, nous avons élaboré des principes stratégiques de c…
Diálogos continentais sobre comunicação em saúde em tempos de pandemia
Esta publicação, a 6a da série LEIASS (Linha Editorial Internacional de Apoio aos Sistemas de Saúde), é fruto dos esforços conjuntos do Conselho Nacional de Secretários de Saúde do Brasil (CONASS) e do Instituto de Higiene e Medicina Tropical da Universidade Nova de Lisboa em reunir artigos de destacados autores, de diferentes países, sobre o [...]
Geochemical and petrographic investigation of the provenance of white marble decorative elements from the Roman Villa Armira in south-eastern Bulgaria
The paper presents evidence of Roman marble production in the Balkan region, specifically from the south-eastern Rhodope Mountain area (modern Bulgaria) and Armira. Although the Roman marble trade and production in antiquity are well known in Prokonnesos, Thasos, and several other production sites, marble deposits from inland Thrace have received far less attention. In 2018-2019, a systematic survey of south-eastern Bulgaria (Roman Thrace) was ca…
Emotional and Behavioral Problems of Children with ASD—The Lessons That We Learned from the Pandemic
The data available for changes in the behavior and emotional state of children with ASD (autism spectrum disorder) in lockdown situations are controversial and scarce. In our research, we compare results before the first COVID-19 lockdown of 21 children with ASD and 21 typically developing children, four to five years of age with those obtained immediately after. The study attempts to answer the question of whether there are changes in the levels…
Gender-Role Stereotypes in the Bulgarian Family
This article reports a representative quantitative and qualitative study covering the entire territory of Bulgaria, related to the analysis of stereotypes regarding male and female roles in the family and in the society. The results of the study indicate that the factor “age” is significant in relation to attitudes towards the social roles of men and women in the modern family, including in relation to domestic violence. The interpretation of the…
Transformation of extracurricular education in post-Soviet countries
A machine learning and Anova-based approach to model financial predictors for corporate failure in imbalanced dataset
This study meticulously explores the crucial elements precipitating corporate failures in Taiwan during the decade from 1999 to 2009. It proposes a new methodology, combining ANOVA and tuning the parameters of the classification so that its functional form describes the data best. Our analysis reveals the ten paramount factors, including Return on Capital ROA(C) before interest and depreciation, debt ratio percentage, consistent EPS across the la…
Institutional transformation of the children’s after-sсhool sector in post-Soviet countries
Large-Scale Modeling of Urban Rooftop Solar Energy Potential Using UAS-Based Digital Photogrammetry and GIS Spatial Analysis
Urban rooftop photovoltaic systems represent a substantial yet still underutilized renewable energy resource, particularly in high-density residential environments. Accurate large-scale assessment of rooftop solar potential, however, remains challenging due to the complex geometry of urban morphology and the limited availability of high-resolution geospatial data. This study presents a large-scale methodological framework for estimating the theor…
Low-Carbohydrate (Ketogenic) Diet in Children with Obesity
Background: For decades, the ketogenic diet has been successfully used for the treatment of obesity, metabolic syndrome, and type 2 diabetes. The mechanisms through which it affects metabolism are not fully understood, but the hormonal changes that occur during ketogenic nutrition are likely to play an important role. Objectives: To investigate the effect of the ketogenic diet on various hormones associated with obesity and the accompanying metab…
Political science (6 works) · Economics (5 works) · Psychology (5 works) · Medicine (4 works) · Law (3 works) · Philosophy (3 works) · Autism (2 works) · Autism spectrum disorder (2 works) · Autism Spectrum Disorder Research (2 works) · Bulgarian (2 works)