Publication Records

ALIU, Florin, Jiří KUČERA and Jakub HORÁK. Exchange rate instabilities during the Russia-Ukraine war: Evidence from V4 countries. Heliyon. Holandsko: Elsevier Ltd, 2024, vol. 10, No 3, p. 1-16. ISSN 2405-8440.

ALIU, Florin and Nuhiu ARTOR. The Benefits of Combining AI and Blockchain in Enhancing Decision-Making in Banking Industry. In Sam Goundar, R. Anandan. Integrating Blockchain and Artificial Intelligence for Industry 4.0 Innovations. Neuveden: Springer Cham, 2024, p. 305-326. ISBN 978-3-031-35750-3.

HAŠKOVÁ, Simona, Marek VOCHOZKA and Jiří KUČERA. A fuzzy evaluation model of manufacturing machinery in terms of sustainable business. Entrepreneurship and Sustainability Issues. Vilnius, Litva: Entrepreneurship and Sustainability Center, 2023, vol. 10, No 4, p. 71-88. ISSN 2345-0282.

KUČERA, Jiří and Aurel PERA. Acoustic Environment Recognition and Visual Tracking Algorithms, Deep Learning-based Ambient Sound Processing Tools, and Geospatial Mapping and Remote Sensing Technologies in a Real-Time Interoperable Decentralized Metaverse. Linguistic and Philosophical Investigations. 2023, vol. 22, Neuveden, p. 128-144. ISSN 1841-2394.

ALIU, Florin, Simona HAŠKOVÁ and Jiří KUČERA. Agricultural Commodities in the Context of the Russia-Ukraine War: Evidence from Corn, Wheat, Barley, and Sunflower Oil. Forecasting. Švýcarsko: MDPI, 2023, vol. 5, No 1, p. 351-373. ISSN 2571-9394.

KOVAČ, Vilém, Zuzana ROWLAND and Tereza MATASOVÁ. Assessment of shared e-scooter safety. Ad Alta - Journal of Interdisciplinary Research. Hradec Králové, Česká republika: Magnanimitas, 2023, vol. 13, No 1, p. 167-174. ISSN 1804-7890.

HORÁK, Jakub, Yuriy BILAN, Andrii DANKEVYCH, Vitalii NITSENKO, Anatolii KUCHER and Dalia STREIMIKIENE. Bioenergy production from sunflower husk in Ukraine: Potential and necessary investments. Journal of Business Economics and Management. Vilnius, Litva: Vilnius Gediminas Technical University, 2023, vol. 24, No 1, p. 1-19, 20 pp. ISSN 1611-1699.

HORÁK, Jakub. COMPANIES USAGE OF AI IN THE CZECH REPUBLIC. Ad Alta - Journal of Interdisciplinary Research. Hradec Králové: MAGNANIMITAS, 2023, vol. 12, No 2, p. 320-324. ISSN 1804-7890.

HORÁK, Jakub, Veronika MACHOVÁ, Tomáš KRULICKÝ and Valentina VYCHESLAVOVNA MANTULENKO. Conclusion. Online. In Development of World Trade in the Context of the COVID-19 Pandemic. Neuveden: Springer Science and Business Media Deutschland GmbH, 2023, p. 175-176. ISBN 978-3-031-27259-2.

ALIU, Florin, Simona HAŠKOVÁ and Mulaj ISA. Consequences of the Russia-Ukraine war: evidence from DAX, ATX, and FTSEMIB. Studies in Economics and Finance. Emerald Publishing, 2023, vol. 40, No 3, p. 549-568. ISSN 1086-7376.

BAJRA, Ujkan, Florin ALIU, Boštjan AVER and Simon ČADEŽ. COVID-19 pandemic-related policy stringency and economic decline: was it really inevitable? Economic Research-Ekonomska Istrazivanja. London, United Kingdom: Taylor & Francis Group, 2023, vol. 36, No 1, p. 499-515. ISSN 1331-677X.

KUCHÁR, Róbert, Jiří KUČERA and Lenka DIVOKÁ. CRISIS SITUATIONS IN THE WORLD AND THEIR IMPACT ON STOCK MARKET INVESTMENTS. Ad Alta - Journal of Interdisciplinary Research. Hradec Králové: MAGNANIMITAS, 2023, vol. 13, No 1, p. 175-180. ISSN 1804-7890.

HORÁK, Jakub, Veronika MACHOVÁ, Tomáš KRULICKÝ and Valentina VYCHESLAVOVNA MANTULENKO. Data Evaluation: Results. Online. In Development of World Trade in the Context of the COVID-19 Pandemic. Neuveden: Springer Science and Business Media Deutschland GmbH, 2023, p. 67-173. ISBN 978-3-031-27259-2.

BAJRA, Ujkan and Florin ALIU. Deciphering the cryptocurrency conundrum: Investigating speculative characteristics and volatility. Finance Research Letters. 2023, vol. 58, Neuveden, p. 1-7. ISSN 1544-6123.

PETRÁCH, Filip, Tereza MATASOVÁ and Barbora ČERNÁ. DEVELOPMENT OF ELECTRICITY AND GAS PRICES. Ad Alta - Journal of Interdisciplinary Research. Hradec Králové, Česká republika: Magnanimitas, 2023, vol. 13, No 2, p. 300-304. ISSN 1804-7890.

HORÁK, Jakub, Veronika MACHOVÁ, Tomáš KRULICKÝ and Valentina VYCHESLAVOVNA MANTULENKO. Development of International Trade Between the Czech Republic and the Russian Federation. Online. In Development of World Trade in the Context of the COVID-19 Pandemic. Neuveden: Springer Science and Business Media Deutschland GmbH, 2023, p. 51-60. ISBN 978-3-031-27259-2.

HORÁK, Jakub, Veronika MACHOVÁ, Tomáš KRULICKÝ and Valentina VYCHESLAVOVNA MANTULENKO. Development of the World Trade in the Context of the COVID-19 Pandemics. Online. In Development of World Trade in the Context of the COVID-19 Pandemic. Neuveden: Springer Science and Business Media Deutschland GmbH, 2023, p. 29-49. ISBN 978-3-031-27259-2.

HALKO, Serhii, Oleksands VERSHKOV, Jakub HORÁK, Oleksandr LEZHENKIN, Larysa BOLTIANSKA, Anatolii KUCHER, Olena SUPRUN, Oleksandr MIROSHNYK and Vitalii NITSENKO. Efficiency of Combed Straw Harvesting Technology Involving Straw Decomposition in the Soil. AGRICULTURE-BASEL. MDPI, 2023, vol. 13, No 3, p. 1-15. ISSN 2077-0472.

HORÁK, Jakub and Amine SABEK. Gaussian process regression ́s hyperparameters optimization to predict financial distress. RETOS-REVISTA DE CIENCIAS DE LA ADMINISTRACION Y ECONOMIA. 2023, vol. 13, No 26, p. 273-289. ISSN 1390-6291.

VOCHOZKA, Marek, Jakub HORÁK and Nancy MORLEY. Generative Artificial Intelligence and Voice and Gesture Recognition Technologies, Virtual Team Movement and Behavior Tracking, and Haptic and Biometric Sensors in Virtual Immersive Workspaces. Contemporary Readings in Law and Social Justice. New York, USA: Addleton Academic Publishers, 2023, vol. 15, No 2, p. 160-178. ISSN 1948-9137.

HORÁK, Jakub, Juraj KOLENCIK, Cecilia VÁDUVA and Barbara WOODWARD. Generative Artificial Intelligence and 3D Virtual Simulation Technologies, Ambient Scene Detection and Automated Employment Decision Tools, and Visual Data Mining and Immersive Remote Collaboration Systems in Decentralized Autonomous Organizations. Analysis and Metaphysics. New York, USA: Addleton Academic Publishers, 2023, vol. 22, Neuvedeno, p. 121-139. ISSN 1584-8574.

KUČERA, Jiří, Alena Novák SEDLÁČKOVÁ and Andreea-Elena NEGOIANU. Generative Artificial Intelligence-based Clinical Decision Support in Patient Data Collection and Analysis, in Physiological Parameter Monitoring, and in Image-based Disease Diagnosis. Contemporary Readings in Law and Social Justice. New York, USA: Addleton Academic Publishers, 2023, vol. 15, No 1, p. 116-133. ISSN 1948-9137.

HORÁK, Jakub, Andrej NOVAK and Liton Chandra VOUMIK. Healthcare Generative Artificial Intelligence Tools in Medical Diagnosis, Treatment, and Prognosis. Contemporary Readings in Law and Social Justice. New York, USA: Addleton Academic Publishers, 2023, vol. 15, No 1, p. 81-98. ISSN 1948-9137.

HORÁK, Jakub, Martin BUGAJ, Pavol DURANA and Roman BLAŽEK. Industry 4.0: Marvels in Profitability in the Transport Sector. Mathematics. Switzerland: MDPI, 2023, vol. 11, No 17, p. 1-23. ISSN 2227-7390.

HORÁK, Jakub, Tomáš KRULICKÝ, Veronika MACHOVÁ and Valentina VYCHESLAVOVNA MANTULENKO. Introduction. Online. In Development of World Trade in the Context of the COVID-19 Pandemic. Neuveden: Springer Science and Business Media Deutschland GmbH, 2023, p. 1-3. ISBN 978-3-031-27259-2.

NUHIU, Artor, Florin ALIU, Jakub HORÁK and Bedri PECI. Making Informed Decisions in the Volatile Crypto Market: An Analysis of Portfolio Risk and Return. SAGE Open. London, UK: SAGE Publications Inc., 2023, vol. 13, No 3, p. 1-14. ISSN 2158-2440.

HAŠKOVÁ, Simona, Jiří KUČERA and Róbert KUCHÁR. MAPPING CURRENT STATE IN THE FIELD OF PREDICTION METHODS OF BUSINESS AND ECONOMIC CHARACTERISTICS ACROSS INDUSTRIES. Ad Alta - Journal of Interdisciplinary Research. Hradec Králové, Česká republika: Magnanimitas, 2023, vol. 12, No 2, p. 46-52. ISSN 1804-7890.

ALIU, Florin, Artor NUHIU, Fisnik ALIU and Arbër HOTI. MEASURING MARKET EFFICIENCY THROUGH VALUATION TECHNIQUES: THE CASE OF VISEGRAD COUNTRIES STOCK MARKETS. Studies in Business and Economics. Sciendo, 2023, vol. 18, No 1, p. 198-217. ISSN 1842-4120.

HORÁK, Jakub and Raluca-Ștefania BALICA. Metaverse and Digital Twin Technologies, Machine Learning and Image Processing Computational Algorithms, and Geospatial Analytics and Simulation Modeling Tools in Interactive Virtual and Extended Reality Environments. Review of Contemporary Philosophy. New York, USA: Addleton Academic Publishers, 2023, vol. 22, Neuveden, p. 34-50. ISSN 1841-5261.

HORÁK, Jakub, Veronika MACHOVÁ, Tomáš KRULICKÝ and Valentina VYCHESLAVOVNA MANTULENKO. Methodology. Online. In Development of World Trade in the Context of the COVID-19 Pandemic. Neuveden: Springer Science and Business Media Deutschland GmbH, 2023, p. 61-65. ISBN 978-3-031-27259-2.

MATASOVÁ, Tereza, Yelyzaveta APANOVYCH and Libuše TURINSKÁ. Pork Quality in Central Europe. Ad Alta - Journal of Interdisciplinary Research. Hradec Králové, Česká republika: Magnanimitas, 2023, vol. 13, No 1, p. 320-323. ISSN 1804-7890.

JANNOVÁ, Michaela and Pavel ROUSEK. Predicting the euro to Czech crown exchange rate. Ad Alta - Journal of Interdisciplinary Research. Hradec Králové, Česká republika: Magnanimitas, 2023, vol. 13, No 1, p. 126-129. ISSN 1804-7890.

HORÁK, Jakub and Michaela JANNOVÁ. Predicting the Oil Price Movement in Commodity Markets in Global Economic Meltdowns. Forecasting. Švýcarsko: MDPI, 2023, vol. 5, No 2, p. 374-389. ISSN 2571-9394.

KRASNIQI, Besnik A., Mrika KOTORRI and Florin ALIU. RELATIONSHIP BANKING, COLLATERAL, AND THE ECONOMIC CRISIS AS DETERMINANTS OF CREDIT RISK: AN EMPIRICAL INVESTIGATION OF SMEs. SOUTH EAST EUROPEAN JOURNAL OF ECONOMICS AND BUSINESS. Bosna a Hercegovina: WALTER DE GRUYTER GMBH, 2023, vol. 18, No 2, p. 49-62. ISSN 1840-118X.

HORÁK, Jakub, Liton Chandra VOUMIK and Gheorghe H. POPESCU. Remote Sensing Data Fusion Techniques, Multimodal Behavioral Predictive and Mobile Location Analytics, and Spatial Cognition and Context Awareness Algorithms in the Metaverse Economy. Linguistic and Philosophical Investigations. New York, USA: Addleton Academic Publishers, 2023, vol. 22, Neuveden, p. 77-93. ISSN 1841-2394.

ALIU, Florin, Vincenzo ASERO, Alban ASLLANI and Jiří KUČERA. Spillover effects and transmission of shocks in Visegrad equity markets. Studies in Economics and Finance. Emerald Publishing, 2023, Neuveden, Neuveden, p. 1-23. ISSN 1086-7376.

KUČERA, Jiří, Alena Novák SEDLÁČKOVÁ and Liton Chandra VOUMIK. Synthetic Data and Image Processing Tools, Immersive 3D and Digital Contact Tracing Technologies, and Cognitive Artificial Intelligence and Spatial Computing Algorithms in the Metaverse Interactive Environment. Review of Contemporary Philosophy. New York, USA: Addleton Academic Publishers, 2023, vol. 22, Neuveden, p. 85-101. ISSN 1841-5261.

ALIU, Florin, Dritero ARIFI and Hajdi XHIXHA. Testing Okun's Law: Evidence From the Western Balkan Countries. SAGE Open. London, UK: SAGE Publications Inc., 2023, vol. 13, No 4, p. 1-12. ISSN 2158-2440.

JANNOVÁ, Michaela, Marcela PADALÍKOVÁ and Veronika ŠANDEROVÁ. The effect of enterprise size on the profitability of sales: Evidence from the manufacturing industry in the Czech Republic. Littera Scripta. České Budějovice, Česká republika: VŠTE, 2023, vol. 16, No 1, p. 87-105. ISSN 1805-9112.

ALIU, Florin, Simona HAŠKOVÁ and Alban ASLLANI. The impact of bitcoin on gold, the volatility index (VIX), and dollar index (USDX): analysis based on VAR, SVAR, and wavelet coherence. Studies in Economics and Finance. Emerald Publishing, 2023, Neuveden, Neuveden, p. 1-24. ISSN 1086-7376.

ALIU, Florin, Ujkan BAJRA, Armand KRASNIQI and Ejup FEJZA. The impact of the Sarbanes–Oxley Act on the integrity of financial reporting: Was it meritorious? Journal of Corporate Accounting & Finance. Wiley Periodicals LLC., 2023, Neuveden, Neuveden, p. 1-13. ISSN 1044-8136.

HORÁK, Jakub, Veronika MACHOVÁ, Tomáš KRULICKÝ and Valentina VYCHESLAVOVNA MANTULENKO. World Trade Development. Online. In Development of World Trade in the Context of the COVID-19 Pandemic. Neuveden: Springer Science and Business Media Deutschland GmbH, 2023, p. 5-28. ISBN 978-3-031-27259-2. Available from: https://dx.doi.org/10.1007/978-3-031-27257-8_2.

KOVACOVA, Maria, Jakub HORÁK and Michael HIGGINS. Behavioral Analytics, Immersive Technologies, and Machine Vision Algorithms in the Web3-powered Metaverse World. Linguistic and Philosophical Investigations. USA: Addleton Academic Publishers, 2022, vol. 21, neuvedeno, p. 57-72. ISSN 1841-2394.

KALINOVÁ, Eva and Iva KREJČOVÁ. Biotic waste as enviromental protection. Journal of Valuation and Expertness. České Budějovice, Česká republika: The Institute of Technology and Business in České Budějovice, 2022, vol. 6, No 1, p. 28-41. ISSN 2533-6258.

HORÁK, Jakub and Šárka PAVLOVÁ. Capital structure of companies applying principles of circular economy. AD ALTA: Journal of Interdisciplinary Research. Hradec Králové, Česká republika: Akademické sdružení MAGNANIMITAS, 2022, vol. 12, No 1, p. 60-64. ISSN 2464-6733.

KABOURKOVÁ, Kristina and Eva KALINOVÁ. Comparison of land accounting according to Czech legislation and international accounting standards. AD ALTA: Journal of Interdisciplinary Research. Hradec Králové, Česká republika: Akademické sdružení MAGNANIMITAS, 2022, vol. 12, No 1, p. 70-74. ISSN 2464-6733.

HORÁK, Jakub, Veronika MACHOVÁ, Ihor HURNYAK and Pedro PARDAL. Competitiveness of Human and Business in Terms of Stock Market Analysis. Scientific Papers of the University of Pardubic. Pardubice, Czech Republic: University of Pardubice, 2022, vol. 30, No 2, p. 1-9. ISSN 1211-555X.

GAJDOSIKOVÁ, Dominika, Katarina VALASKOVÁ, Tomáš KLIEŠTIK and Veronika MACHOVÁ. COVID-19 Pandemic and Its Impact on Challenges in the Construction Sector: A Case Study of Slovak Enterprises. Mathematics. Switzerland: MDPI AG, 2022, vol. 10, No 17, p. 1-20, 21 pp. ISSN 2227-7390.

KALINOVÁ, Eva, Yaroslava KOSTIUK and Denisa MICHUTOVÁ. Czech companies will have to deal with import of labour. Online. In Jakub Horák, T. Lee, Eva Dolejšová. SHS Web of Conferences, Volume 132 (2022): "Innovative Economic Symposium 2021 – New Trends in Business and Corporate Finance in COVID-19 Era (IES2021)". 1st ed. Les Ulis, France: EDP Sciences, 2022, p. nestránkováno, 11 pp. ISSN 2261-2424.

KOVACOVÁ, Maria, Lenka HROSOVÁ, Pavol ĎURANA and Jakub HORÁK. Earnings management model for Visegrad Group as an immanent part of creative accounting. Oeconomia Copernicana. Polsko: Institute of Economic Research, 2022, vol. 13, No 4, p. 1143-1176. ISSN 2083-1277. Available from: https://dx.doi.org/10.24136/oc.2022.033.

KALINOVÁ, Eva and Denisa KOSTEČKOVÁ. Effectiveness of Just-In-Time principle in today´s circular economy and its negative effect. Social and Economic Revue. Trenčín, Slovensko: Trenčianska univerzita Alexandra Dubčeka v Trenčíne, 2022, vol. 20, No 1, p. 35-42. ISSN 2585-9358.

KOVACOVÁ, Maria, Jakub HORÁK and Gheorghe H. POPESCU. Haptic and Biometric Sensor Technologies, Deep Learning-based Image Classification Algorithms, and Movement and Behavior Tracking Tools in the Metaverse Economy. Analysis and Metaphysics. USA: Addleton Academic Publishers, 2022, vol. 21, prosinec, p. 176-192. ISSN 1584-8574.

KALINOVÁ, Eva and Tereza MÍLOVÁ. Loyalty cards as a form of sales promotion for retail chains and their impact on customers. Littera Scripta. České Budějovice, Česká republika: VŠTE v Českých Budějovicích, 2022, vol. 15, No 1, p. 1-18. ISSN 1805-9112.

HORÁK, Jakub and Zuzana ROWLAND. Oceňování oběžného majetku a závazků. České Budějovice, ČR: Vysoká škola technická a ekonomická v Českých Budějovicích, 2022. ISBN 978-80-7468-200-1.

HORÁK, Jakub and Klára KATZ. Operating lease as a means and motivation for circular economy. Ekonomicko-manazerske spektrum. Žilina, Slovensko: Žilinská univerzita v Žilině, 2022, vol. 16, No 1, p. 114-124. ISSN 1337-0839.

KALINOVÁ, Eva and Petra MRÁZOVÁ. Profitability of company in industry. AD ALTA: Journal of Interdisciplinary Research. Hradec Králové, Česká republika: Akademické sdružení MAGNANIMITAS, 2022, vol. 12, No 1, p. 216-219. ISSN 2464-6733.

KUČERA, Jiří, Eva KALINOVÁ and Lenka DIVOKÁ. Profitability of current investments in stock indexes. Entrepreneurship and Sustainability Issues. Lithuania: Entrepreneurship and Sustainability Center, 2022, vol. 10, No 1, p. 420-434. ISSN 2345-0282.

KLIEŠTIK, Tomáš, Hussam MUSA, Veronika MACHOVÁ and Linda RICE. Remote Sensing Data Fusion Techniques, Autonomous Vehicle Driving Perception Algorithms, and Mobility Simulation Tools in Smart Transportation Systems. Contemporary Readings in Law and Social Justice. New York, USA: Addleton Academic Publishers, 2022, vol. 14, No 1, p. 137-152. ISSN 1948-9137.

TAN, Hong, Pengfei SHENG and Jakub HORÁK. RETAILER OR THE THIRD-PARTY REMANUFACTURER: WHICH IS THE GREENER CONTRACTOR FOR OUTSOURCING REMANUFACTURING? Entrepreneurship and Sustainability Issues. Vilnius, Litva: Entrepreneurship and Sustainability Center, 2022, vol. 10, No 1, p. 435-452. ISSN 2345-0282.

VALASKOVA, Katarina, Jakub HORÁK and Sofia BRATU. Simulation Modeling and Image Recognition Tools, Spatial Computing Technology, and Behavioral Predictive Analytics in the Metaverse Economy. Review of Contemporary Philosophy. USA: Addleton Academic Publishers, 2022, vol. 21, neuvedeno, p. 239-255. ISSN 1841-5261.

VALASKOVÁ, Katarina, Jakub HORÁK and George LĂZĂROIU. Socially Responsible Technologies in Autonomous Mobility Systems: Self-Driving Car Control Algorithms, Virtual Data Modeling Tools, and Cognitive Wireless Sensor Networks. Contemporary Readings in Law and Social Justice. New York, USA: Addleton Academic Publishers, 2022, vol. 14, No 2, p. 172-188. ISSN 1948-9137.

HORÁK, Jakub, Pavel ROUSEK and Václav OPÁLKA. STOCK PRICE TREND OF SELECTED COMPANIES APPLYING THE PRINCIPLES OF CIRCULAR ECONOMY. Entrepreneurship and Sustainability Issues. Vilnius, Litva: Entrepreneurship and Sustainability Center, 2022, vol. 10, No 2, p. 448-463. ISSN 2345-0282.

MILICHOVSKÝ, František and Petr BASTL. Tax burden on companies in selected countries. AD ALTA: Journal of Interdisciplinary Research. Hradec Králové, Česká republika: Akademické sdružení MAGNANIMITAS, 2022, vol. 12, No 1, p. 119-121. ISSN 2464-6733.

HORÁK, Jakub and Karel DUŠEK. The evolution of gold and silver commodity prices in the cirular economy. Journal of Valuation and Expertness. České Budějovice, Česká republika: The Institute of Technology and Business in České Budějovice, 2022, vol. 6, No 1, p. 11-27. ISSN 2533-6258.

VRBKA, Jaromír, Jakub HORÁK and Tomáš KRULICKÝ. The influence of world oil prices on the Chinese Yuan exchange rate. Entrepreneurship and Sustainability Issues. Vilnius,Litva: Entrepreneurship and Sustainability Center, 2022, vol. 9, No 4, p. 439-462. ISSN 2345-0282.

HORÁK, Jakub. Umělé neuronové sítě v řízení hodnoty podniku (Artificial neural networks in business value management). 1. vyd. Praha, Česká republika: GRADA Publishing, a.s., 2022, 176 pp. Finanční řízení. ISBN 978-80-271-3277-5.

KALINOVÁ, Eva. Usage Of Artificial Intelligence On Social Media In Europe. Ad Alta-Journal Of Interdisciplinary Research. 2022, vol. 12, No 2, p. 330-333. ISSN 1804-7890.

VOCHOZKA, Marek, Veronika MACHOVÁ, Jakub HORÁK and Eva KALINOVÁ. Výzkumná zpráva pro vědecko-výzkumnou činnost studentů na Vysoké škole technické a ekonomické v Českých Budějovicích (3. dopl. a aktual. vyd.) (Research Report for the Scientific-Research Work of the Students at the Institute of Technology and Business in České Budějovice (3nd ed.)). 2022.

MILICHOVSKÝ, František and Adéla MAJEROVÁ. WILL WE BE ABLE TO USE RECYCLED PLASTICS OR SHALL WE DECIDE FOR PACKAGING FREE PRODUKCTION? Ad Alta-Journal Of Interdisciplinary Research. 2022, vol. 12, No 2, p. 276-283. ISSN 1804-7890.