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Brazilian Power Electronics Conference, COBEP

作者： Diego A. Acevedo Bueno Juliano C. Leal da Silva Edison Roberto C. da Silva Abinadabe Silva Andrade Tulio Albuquerque Dias Post-graduate Program in Electrical Engineering - PPgEE/COPELE Universidade Federal de Campina Grande Campina Grande PB BR Post-graduate Program in Electrical Engineering - PPgEE/COPELE Federal University of Campina Grande Campina Grande PB Brazil COPELE Federal University of Campina Grade/LETAM Campina Grande PB Brazil

This paper proposes two seven level asymmetric inverter with coupled inductors that enable a reduction in the number of controlled switching devices. However, the lack of redundant states and difference in the maximum pole voltages reduce the performance of the inverters due to higher winding currents and saturation of magnetic core. For mitigating those issues, a coupled inductor with elevated magnetizing inductance is used. The operation principle, conducting states and modulation strategy are described. Simulation and experimental results demonstrate the feasibility of proposed topology.

关键词： Topology Inductors Switches Windings Inductance Modulation Capacitors

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Worldwide Soundscapes: A Synthesis of Passive Acoustic Monitoring Across Realms

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Global Ecology and Biogeography 2025年第5期34卷

作者： Kevin F. A. Darras Rodney A. Rountree Steven L. Van Wilgenburg Anna F. Cord Frederik Pitz Youfang Chen Lijun Dong Agnès Rocquencourt Camille Desjonquères Patrick Mauritz Diaz Tzu-Hao Lin Théophile Turco Louise Emmerson Tom Bradfer-Lawrence Amandine Gasc Sarah Marley Marcus Salton Laura Schillé Paul J. Wensveen Shih-Hung Wu Adriana C. Acero-Murcia Orlando Acevedo-Charry Matyáš Adam Jacopo Aguzzi Irmak Akoglu M. Clara P. Amorim Mina Anders Michel André Alexandre Antonelli Leandro Aparecido Do Nascimento Giulliana Appel Stephanie Archer Christos Astaras Andrey Atemasov Jamieson Atkinson Joël Attia Emanuel Baltag Luc Barbaro Fritjof Basan Carly Batist Julio Ernesto Baumgarten Just T. Bayle Sempere Kristen Bellisario Asaf Ben David Oded Berger-Tal Frédéric Bertucci Matthew G. Betts Iqbal S. Bhalla Thiago Bicudo Marta Bolgan Sara Bombaci Gerard Bota Martin Boullhesen Robert A. Briers Susannah Buchan Michal Budka Katie Burchard Giuseppa Buscaino Alice Calvente Marconi Campos-Cerqueira Maria Isabel Carvalho Gonçalves Maria Ceraulo Maite Cerezo-Araujo Gunnar Cerwén Adams A. Chaskda Maria Chistopolova Christopher W. Clark Kieran D. Cox Benjamin Cretois Chapin Czarnecki Luis P. da Silva Wigna da Silva Laurence H. De Clippele David de la Haye Ana Silvia de Oliveira Tissiani Devin de Zwaan M. Eugenia Degano Jessica Deichmann Joaquin del Rio Christian Devenish Ricardo Díaz-Delgado Pedro Diniz Dorgival Diógenes Oliveira-Júnior Thiago Dorigo Saskia Dröge Marina Duarte Adam Duarte Kerry Dunleavy Robert Dziak Simon Elise Hiroto Enari Haruka S. Enari Florence Erbs Britas Klemens Eriksson Pınar Ertör-Akyazi Nina C. Ferrari Luane Ferreira Abram B. Fleishman Paulo J. Fonseca Bárbara Freitas Nicholas R. Friedman Jérémy S. P. Froidevaux Svetlana Gogoleva Carolina Gonzaga José Miguel González Correa Eben Goodale Benjamin Gottesman Ingo Grass Jack Greenhalgh Jocelyn Gregoire Samuel Haché Jonas Hagge William Halliday Antonia Hammer Tara Hanf-Dressler Sylvain Haupert Samara Haver Becky Heath Daniel Hending Jose Hernandez-Blanco Dennis Higgs EFNO ECODIV INRAE Domaine des Barres Nogent-sur-Vernisson France Sustainable Agricultural Systems & Engineering Lab School of Engineering Westlake University Hangzhou Zhejiang China Chair of Computational Landscape Ecology Faculty of Environmental Sciences Dresden University of Technology Dresden Germany Biology Department University of Victoria Victoria British Columbia Canada The Fish Listener Waguoit Massachusetts USA Terrestrial Unit Prairie Region Canadian Wildlife Service Environment & Climate Change Canada Prairie & Northern Wildlife Research Centre Saskatoon Saskatchewan Canada Agro-ecological Modeling Group Faculty of Agriculture University of Bonn Bonn Germany Marine Mammal and Marine Bioacoustics Laboratory Department of Deep Sea Science Institute of Deep-sea Science and Engineering Chinese Academy of Sciences Sanya Hainan China Institut de Systématique Évolution Biodiversité Muséum National d’Histoire Naturelle Paris France Université Grenoble Alpes Université Savoie Mont Blanc CNRS LECA Grenoble France Climate Change and Biodiversity Hanns R. Neumann Stiftung Indonesia Muaradua Indonesia Biodiversity Research Center Academia Sinica Nankang Taipei Taiwan ENES Bioacoustics Research Laboratory University of Saint-Etienne CRNL CNRS UMR 5292 Inserm UMR_S 1028 Saint-Etienne France Australian Antarctic Division Science Branch Department of Climate Change Energy Environment and Water Channel Highway Kingston Tasmania Australia Biological and Environmental Sciences University of Stirling Stirling Scotland Centre for Conservation Science RSPB Edinburgh UK IMBE Aix Marseille Univ Avignon Univ CNRS IRD Aix-en-Provence France Scotland's Rural College Craibstone Estate Aberdeen UK BIOGECO INRAE University of Bordeaux Cestas France Westman Islands Research Centre University of Iceland Vestmannaeyjar Iceland Qigu Research Center Taiwan Biodiversity Research Institute Nantou County Taiwan Programa de Pós-graduação em Ecologia

Aim The urgency for remote, reliable and scalable biodiversity monitoring amidst mounting human pressures on ecosystems has sparked worldwide interest in Passive Acoustic Monitoring (PAM), which can track life underwater and on land. However, we lack a unified methodology to report this sampling effort and a comprehensive overview of PAM coverage to gauge its potential as a global research and monitoring tool. To address this gap, we created the Worldwide Soundscapes project, a collaborative network and growing database comprising metadata from 416 datasets across all realms (terrestrial, marine, freshwater and subterranean). Location Worldwide, 12,343 sites, all ecosystem types. Time Period 1991 to present. Major Taxa Studied All soniferous taxa. Methods We synthesise sampling coverage across spatial, temporal and ecological scales using metadata describing sampling locations, deployment schedules, focal taxa and audio recording parameters. We explore global trends in biological, anthropogenic and geophysical sounds based on 168 selected recordings from 12 ecosystems across all realms. Results Terrestrial sampling is spatially denser (46 sites per million square kilometre—Mkm 2 ) than aquatic sampling (0.3 and 1.8 sites/Mkm 2 in oceans and fresh water) with only two subterranean datasets. Although diel and lunar cycles are well sampled across realms, only marine datasets (55%) comprehensively sample all seasons. Across the 12 ecosystems selected for exploring global acoustic trends, biological sounds showed contrasting diel patterns across ecosystems, declined with distance from the Equator, and were negatively correlated with anthropogenic sounds. Main Conclusions PAM can inform macroecological studies as well as global conservation and phenology syntheses, but representation can be improved by expanding terrestrial taxonomic scope, sampling coverage in the high seas and subterranean ecosystems, and spatio-temporal replication in freshwater habitats. Overall, this

关键词： ARU automated sound recorder biodiversity conservation biology ecoacoustics IUCN GET realm Passive Acoustic Monitoring phenology soundscape ecology

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Using synchronism pulse to improve A2I implementations

Using synchronism pulse to improve A2I implementations

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IEEE Instrumentation and Measurement Technology Conference

作者： Vanderson Lima Reis Edmar C. Gurjão Raimundo C. S. Freire Post-Graduate Program in Electrical Engineering UFCG Universidade Federal de Campina Grande Campina Grande PB BR Electrical Engineering Department - UFCG Campina Grande Paraiba Brazil

ISBN: (纸本)9781479961153

The necessity of the same signal for measurement and reconstruction of sparse signals in Compressed Sensing is one of the challenges in its practical implementation. In this paper, we extend the Random Modulator Pre-Integrator (RMPI), architecture proposed to signal acquisition in Compressed Sensing, by including a synchronization signal that permits to obtain the same measurement signal from a Pseudo Random Binary Sequence (PRBS), both at measurement and reconstruction, with low increase hardware complexity. The proposed extension was validated in hardware, and it is shown the possibility of transparent modification of the measurement signal, maintaining the functionality of to obtain the same signal at measurement and recovery.

关键词： Hardware Synchronization Compressed sensing Pulse measurements Field programmable gate arrays Active filters Generators

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Associated Damage Assessment to Flooding in City Blumenau

Associated Damage Assessment to Flooding in City Blumenau

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International Conference on Complex, Intelligent and Software Intensive Systems, CISIS

作者： M. Tachini D.L. Severo A. Cordero M.R. Momo H.S. Silva Post Graduate Program in Environmental Engineering - PPGEA PROPEP / FURB CEOPS DFIS / CCEN / FURB CEOPS DFIS /CCEN / FURB CEOPS DEC/CCT/FURB

Floods are among the main types of phenomena associated with socio-economic and environmental damage. Although it occurs public investment and advances in hydro meteorological monitoring and warning systems, the damage is recurring because there are high risks involved. This shows the vulnerability of the city against floods and at the same time, the skills of those affected in live with the risks, while not having conditions Ark them. This study examines the damage related to the historical events of 1983, 1984, 1992 and 2001 in the city of Blumenau (SC), located in southern Brazil. Initially, two approaches have been developed for this evaluation. The first approach was statistically resulting from the application of 387 questionnaires in interviews with residents and merchants of flood areas, and the second approach was economic damage. The results of the two approaches were used in the composition of an evaluation model of tangible damage associated with floods and floods in the city of Blumenau, called MAVEN. The results calculated by the model were considered good, although it presents results with significant discrepancies when applied to extreme hydrometeoro logical events such as the environmental disaster of November 2008, characterized as a result of landslides in large proportion due to the large volume of rainfall without above. One of the results of the model was the need to characterize in detail the input data, since the spatial and temporal peculiarities tend to prevent optimal performance of the MAVIN model. The main conclusion was that the standardization of an evaluation model of damage points (type of MAVIN) can provide greater certainty in determining public policy to minimize future damage and provide good benefits to actuarial calculations for resizing purposes of disaster risks addressed to Insurance Companies.

关键词： Artificial intelligence Software

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Absorption and fixation of vegetable tannins by collagen 33

Absorption and fixation of vegetable tannins by collagen

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33rd International Union of Leather Technologists and Chemists, IULTCS Congress 2015

作者： Spier, Franciela Fuck, Wagner F. Jacinto, Manuel Antonio Chagas Gutterres, Mariliz Laboratory ForLeather and Environmental Studies Chemical Engineering Post-Graduate Program Federal University of Rio Grande Do sul Av. Luiz Englert s/n Porto-Alegre-RS Brazil Leather Laboratory of the Embrapa Livestock Southeast Rodovia Washington Luiz Sao Carlos SPCEP 13.569-706 Brazil

In the process of transforming animal hide into leather, the hide, which is susceptible to putrefaction, is stabilized. The growing interest in clean technologies and environmental requirements led tanners to increase their efforts to develop chrome-free tanning agents. Among the various tanning options, vegetable tanning is a traditional and recognizable method and, associated with some physicochemical properties, it provides the leather with unique characteristics, retaining the natural flaws and markings. As an organic biodegradable material, it is also environmentally friendly. The vegetable tannins are complex mixtures with tanning action provided by their concentration of phenolic substances that react with collagen materials. This study aimed to investigate the ability of hide's collagen substrate to absorb and fix vegetable tannin of acacia mearnsii at different pH, through the use of especial analytical and experimental methods. In substrates such as collagen powder, bovine hide powder, and bovine hides, was examined the influence of the pH and tannins offers on the absorption and fixation of acacia vegetable tannin. The absorbed tannin content was determined by UV-visible spectroscopy and by the difference of solids contents in the suspension before and after tanning. The analyses of zeta potential allowed for the elucidation of conditions of the tanning process.

关键词： Tannins

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Small and Medium Enterprises in Brazil: A Comprehensive Study of the Manager's View of the Business

Small and Medium Enterprises in Brazil: A Comprehensive Stud...

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IFIP WG 5.7 International Conference on Advances in Production Management Systems, APMS 2014

作者： Papalardo, Fabio Meirelles, L. Claudio Sacomano, José Benedito de Aranha Machado, Jayme Paulista University-UNIP Post-Graduate Program in Production Engineering Brazil

ISBN: (纸本)9783662447352

Small and Medium Enterprises (SME) in Brazil are factors of great economic importance, for they represent employment for more than fifty six million people. When we consider the country's overall population of two hundred million inhabitants we can understand the magnitude of such economic segment, and it means that it is responsible for the sustainability of the employment structure. As in any economic activity, it depends on efficiency and that means specialized management, low costs, low waste, high competitiveness: these factors assure the sustainability of such enterprises in the market. Apart from these factors, which are internal to the management, there are external factors that influence the enterprises' performance, such as policies to foster development, financial cost, qualified work force, the tax burden, value of local currency weighted against foreign currencies, and other factors. Management compliant with this matrix of factors is dependent upon the managers' vision. This comprehension by the managers about the different internal and external factors that influence the enterprise shall define the organizational culture that will prevail in this type of enterprises. For this study, we have researched the vision of SME's managers as far as internal and external factors that influence the management of enterprises. © IFIP International Federation for Information Processing 2014.

关键词： Managers

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Archimedean Spiral Multi-resonator for Chipless RFID Tag Using Frequency-Coded Decimal Method

Archimedean Spiral Multi-resonator for Chipless RFID Tag Usi...

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SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference

作者： Hillner de P. A. Ferreira Alexandre J. R. Serres Georgina Karla de F. Serres Francisco M. de Assis Alfredo Gomes Neto Post-Graduate Program in Electrical Engineering Federal University of Campina Grande Group of Telecom. and Applied Electromagnetism Federal Inst. of Educ. Science and Technology of Paraiba

ISBN: (纸本)9781467394932

A compact electromagnetic multi-resonator is presented in this paper using a new technique for chipless RFID tag data encoding. Employing Archimedean spirals, the information is applied into the spectral signature shifting resonant frequencies in several positions. The multi-resonator tag proposed operates in microwave band (between 3.0-7.0GHz) and has a coding data capacity of up to 100 decimal numbers for two resonant frequencies. The simulated and measured results show a good concordance and a great perspective to use in low-cost RFID chipless tag applications.

关键词： RFID chipless Frequency-Coded Decimal Archimedean spiral Multi-resonator

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Universal active power filters based on nine-leg converter

Universal active power filters based on nine-leg converter

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IEEE Energy Conversion Congress and Exposition

作者： P. L. S. Rodrigues C. B. Jacobina G. A. d. A. Carlos Post-Graduate Program in Electrical Engineering - PPgEE - Copele Department of Electrical Engineering Federal University of Campina Grande (UFCG) Paraiba Brazil Universidade Federal de Campina Grande Campina Grande PB BR

This paper proposed two universal active power filter (UAPF) topologies for reactive power and harmonic compensation. The proposed system is a combination of series and shunt active power filters. They are suitable to improve the harmonic distortion in the grid currents and a voltage compensation. The filters are composed of three three-phase converters resulting in nine legs. The first (configuration I) can operate with floating dc-link capacitor or an auxiliary DC source on the series filter and the second one (configuration II) uses a combination of two series filters and one shunt filter sharing a single dc-link. The complete control system, including the PWM techniques, is developed and a comparison between the configurations is done. Simulation and experimental results are shown for validation purposes.

关键词： Pulse width modulation Voltage control Capacitors Harmonic analysis Power harmonic filters Control systems

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Evaluation of the Performance of Different Damage Indicators in Railway Bridges

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Procedia engineering 2015年 114卷 746-753页

作者： Vinicius Alves Andreia Meixedo Diogo Ribeiro Rui Calçada Alexandre Cury Post-Graduate Program in Civil Engineering Federal University of Ouro Preto Ouro Preto Brazil Faculty of Engineering University of Porto Porto Portugal School of Engineering Polytechnic of Porto Porto Portugal Departament of Applied and Computational Mechanics Federal University of Juiz de Fora Juiz de Fora Brazil

This article describes a damage identification methodology based on a genetic algorithm and its application to the numerical model of a railway bridge. The identification method is based on an iterative process that in each iteration compares the values of the bridge's dynamic response for a test damage scenario with the response values for a reference damage scenario. The introduction of damage to the test numerical model is based on the modification of a preselected numerical parameter values. The genetic algorithm allows the identification of damage by minimizing the residue of an objective function constructed from the responses of the test and reference model, and based on the so-called damage indicators. In this study are defined and tested damage indicators based on modal parameters (frequencies and vibration modes) in parameters built from the modal parameters (modal curvatures and flexibility curvatures), and in dynamic responses under action of impulsive loads from frequency response functions (FRFs). The proposed methodology for identifying damage was tested based on a two-dimensional numerical finite element model of a railway bridge including the railway track. The results allowed evaluating the efficiency and reliability of the methodology and of the damage indicators which, in most situations, showed potential in the detection, location and quantification of the severity of the damage.

关键词： Damage identification iterative method genetic algorithm damage indicators railway bridges.

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Global burden of 369 diseases and injuries in 204 countries and territories, 1990–2019: a systematic analysis for the Global Burden of Disease Study 2019

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The Lancet 2020年第10258期396卷 1204-1222页

作者： Abbafati, Cristiana Abbas, Kaja M. Abbasi, Mohammad Abbasifard, Mitra Abbasi-Kangevari, Mohsen Abbastabar, Hedayat Abd-Allah, Foad Abdelalim, Ahmed Abdollahi, Mohammad Abdollahpour, Ibrahim Abedi, Aidin Abedi, Parisa Abegaz, Kedir Hussein Abolhassani, Hassan Abosetugn, Akine Eshete Aboyans, Victor Abrams, Elissa M. Abreu, Lucas Guimarães Abrigo, Michael R.M. Abu Haimed, Abdulaziz Khalid Abualhasan, Ahmed Abu-Gharbieh, Eman Abu-Raddad, Laith Jamal Abushouk, Abdelrahman I. Acebedo, Alyssa Ackerman, Ilana N. Adabi, Maryam Adair, Tim Adamu, Abdu A. Adebayo, Oladimeji M. Adedeji, Isaac Akinkunmi Adekanmbi, Victor Adelson, Jaimie D. Adeoye, Abiodun Moshood Adetokunboh, Olatunji O. Adham, Davoud Advani, Shailesh M. Afarideh, Mohsen Afshari, Mahdi Afshin, Ashkan Agardh, Emilie E. Agarwal, Gina Agasthi, Pradyumna Agesa, Kareha M. Aghaali, Mohammad Aghamir, Seyed Mohammad Kazem Agrawal, Anurag Ahmad, Tauseef Ahmadi, Alireza Ahmadi, Keivan Ahmadi, Mehdi Ahmadieh, Hamid Ahmadpour, Ehsan Ahmed, Muktar Beshir Aji, Budi Akalu, Temesgen Yihunie Akinyemi, Rufus Olusola Akinyemiju, Tomi Akombi, Blessing Akunna, Chisom Joyqueenet Alahdab, Fares Al-Aly, Ziyad Alam, Khurshid Alam, Noore Alam, Samiah Alam, Tahiya Alanezi, Fahad Mashhour Alanzi, Turki M. Albertson, Samuel B. Alcalde-Rabanal, Jacqueline Elizabeth Alema, Niguse Meles Alemu, Biresaw Wassihun Alemu, Yihun Mulugeta Alhabib, Khalid F. Alhassan, Robert Kaba Ali, Muhammad Ali, Saqib Alicandro, Gianfranco Alijanzadeh, Mehran Alinia, Cyrus Alipour, Vahid Alizade, Hesam Aljunid, Syed Mohamed Alla, François Allebeck, Peter Almadi, Majid Abdulrahman Hamad Almasi, Ali Almasi-Hashiani, Amir Almasri, Nihad A. Al-Mekhlafi, Hesham M. Almulhim, Abdulaziz M. Alonso, Jordi Al-Raddadi, Rajaa M. Altirkawi, Khalid A. Alumran, Arwa Khalid Alvis-Guzman, Nelson Alvis-Zakzuk, Nelson J. Amare, Azmeraw T. Amare, Bekalu Amini, Saeed Amini-Rarani, Mostafa Aminorroaya, Arya Amiri, Fatemeh Amit, Arianna Maever L. Amugsi, Dickson A. Amul, Gianna Gayle Herrera Anbesu, Etsay Woldu Ancuceanu, Robert Anderl Department of Juridical and Economic Studies La Sapienza University Rome Italy Department of Infectious Disease Epidemiology London School of Hygiene and Tropical Medicine London United Kingdom Social Determinants of Health Research Center Tehran Iran Department of Neurology Cairo University Cairo Egypt School of Pharmacy Tehran Iran The Institute of Pharmaceutical Sciences (TIPS) Tehran Iran Neuroscience Research Center Isfahan University of Medical Sciences Isfahan Iran Biostatistics Department Near East University Nicosia Cyprus Biostatistics and Health Informatics Madda Walabu University Bale Robe Ethiopia Research Center for Immunodeficiencies Tehran Iran Karolinska University Hospital Huddinge Sweden Department of Cardiology Dupuytren University Hospital Limoges France University of Limoges Limoges France Department of Pediatric Dentistry Federal University of Minas Gerais Belo Horizonte Brazil Department of Research Philippine Institute for Development Studies Quezon City Philippines Department of Healthcare Policy and Research Weill Cornell Medical College in Qatar Doha Qatar Harvard Medical School Boston MA United States Department of Medicine Ain Shams University Cairo Egypt Hamadan University of Medical Sciences Hamadan Iran School of Medicine Cardiff University Cardiff United Kingdom School of Laboratory Medicine and Science University College Hospital Ibadan Ibadan Nigeria Institute of Cardiovascular Diseases University of Ibadan Ibadan Nigeria Centre of Excellence for Epidemiological Modelling and Analysis Stellenbosch University Cape Town South Africa Department of Global Health Stellenbosch University Cape Town South Africa School of Health Ardabil University of Medical Science Ardabil Iran Social Behavioral Research Branch National Institute of Health Bethesda MD United States Department of Oncology Georgetown University Washington DC DC United States Department of Health Metrics Sciences School of Medicine Seattle WA

Background: In an era of shifting global agendas and expanded emphasis on non-communicable diseases and injuries along with communicable diseases, sound evidence on trends by cause at the national level is essential. The Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) provides a systematic scientific assessment of published, publicly available, and contributed data on incidence, prevalence, and mortality for a mutually exclusive and collectively exhaustive list of diseases and injuries. Methods: GBD estimates incidence, prevalence, mortality, years of life lost (YLLs), years lived with disability (YLDs), and disability-adjusted life-years (DALYs) due to 369 diseases and injuries, for two sexes, and for 204 countries and territories. Input data were extracted from censuses, household surveys, civil registration and vital statistics, disease registries, health service use, air pollution monitors, satellite imaging, disease notifications, and other sources. Cause-specific death rates and cause fractions were calculated using the Cause of Death Ensemble model and spatiotemporal Gaussian process regression. Cause-specific deaths were adjusted to match the total all-cause deaths calculated as part of the GBD population, fertility, and mortality estimates. Deaths were multiplied by standard life expectancy at each age to calculate YLLs. A Bayesian meta-regression modelling tool, DisMod-MR 2.1, was used to ensure consistency between incidence, prevalence, remission, excess mortality, and cause-specific mortality for most causes. Prevalence estimates were multiplied by disability weights for mutually exclusive sequelae of diseases and injuries to calculate YLDs. We considered results in the context of the Socio-demographic Index (SDI), a composite indicator of income per capita, years of schooling, and fertility rate in females younger than 25 years. Uncertainty intervals (UIs) were generated for every metric using the 25th and 975th ordered 1000 draw value

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