MSc, Complex Systems Modeling

University of São Paulo (USP)

São Paulo, SP, Brazil

2025 - 2022

Graduate education focused on complexity science and complex systems modeling, with emphasis on complex networks and agent-based models.

• Published one peer-reviewed article and presented two abstracts at scientific conferences
• Two additional articles intended for peer-reviewed publications are currently in preparation
• Founded the Agent-Based Modeling Study Group at the University of São Paulo
• Thesis website: danielvartan.github.io/mastersthesis

BSc, Marketing

University of São Paulo (USP)

São Paulo, SP, Brazil

2022 - 2016

Undergraduate education with a strong quantitative foundation in calculus, statistics, and finance. The USP Marketing program distinguishes itself by prioritizing analytical rigor and marketing science, in contrast to other undergraduate programs focused solely on communication and creation.

• Final grade: 7.7/10
• Class rank: 23rd out of 66 students
• Completed four undergraduate research/outreach projects
• Co-founded the Wellness and Health Commission at the School of Arts, Sciences, and Humanities (EACH)

Research Fellow

Sustentarea

São Paulo, SP, Brazil

Present - 2024

• Lead modeling efforts on the Global Syndemic project, focusing on ABM implementation, project coordination, and cross-group collaboration
• Produce data science reports and software tools for research
• Design and deliver training courses on R programming and open science
• Collaborate with the Department of Nutrition, School of Public Health (FSP), University of São Paulo (USP)
• Awarded a fellowship by Brazil’s National Council for Scientific and Technological Development (CNPq)

Graduate Research Fellow

University of São Paulo (USP)

São Paulo, SP, Brazil

2025 - 2022

• Developed and analyzed the largest dataset on Brazilian human chronotypes (n = 115,166)
• Conducted statistical tests examining the influence of latitude on chronotype distribution, providing novel evidence for biological rhythm entrainment in ecological contexts
• Designed and implemented research software tools for data analysis and visualization
• Participated in graduate-level courses, conferences, and symposia
• Awarded a fellowship by Brazil’s Federal Agency for Support and Evaluation of Graduate Education (CAPES)

Assistant Research Fellow

University of São Paulo (USP)

São Paulo, SP, Brazil

2022 - 2019

• Participated in projects analyzing internal and external databases, including the Corações de Baependi Cohort and the Sleep and Pregnancy Project
• Developed models of biological time series and created research software tools for data analysis, including the R packages {mctq} and {actverse}
• Delivered training courses and co-authored the first Brazilian Actigraphy Consensus, published by the Brazilian Sleep Association
• Managed interdisciplinary teams in the development and dissemination of research software, models, and training workshops
• Participated in the conception and management of extension and outreach projects involving collaboration across academic, governmental, and public health stakeholders

Undergraduate Research Fellow

University of São Paulo (USP)

São Paulo, SP, Brazil

2019 - 2016

• Organized and promoted outreach initiatives, including Durma na EACH, the 15th Brazilian Symposium of Chronobiology, and the 2019 Summer Course on Sleep Biology
• Provided research support for the Sleep Genetics project and other studies involving actigraphy data analysis
• Engaged in science communication, training, and collaborative scientific events
• Awarded a fellowship through the Unified Fellowship Program (PUB) from the USP Office of Undergraduate Studies

An Introduction to the R Programming Language

University of São Paulo (USP)

São Paulo, SP, Brazil

2025

Developed and taught a comprehensive beginner-level course introducing researchers to R programming, covering core topics such as computer science fundamentals, R basics, data munging, exploratory data analysis, and modeling techniques.

Technical High School Program in Administration

Government of the State of São Paulo

São Paulo, SP, Brazil

2024

Served as a teacher at State Schools Capitão Pedro Monteiro do Amaral and Professor Colombo de Almeida, instructing Technical High School students in courses including Career and Competencies for the Job Market, Introduction to Administration, Legislation and Human Resources, and Mathematics Applied to Administration.

ACH0042 - Problem Based Learning II

University of São Paulo (USP)

São Paulo, SP, Brazil

2023

Served as a graduate teaching intern for the undergraduate course ACH0042 – Problem-Based Learning II, a one-semester course for Information Systems students.

Introductory Course on Actigraphy

18th Brazilian Sleep Congress

São Paulo, SP, Brazil

2021

Developed and taught an introductory actigraphy course at the 18th Brazilian Sleep Congress, coinciding with the launch of the Brazilian Actigraphy Consensus.

RESICLIMA Network

Researcher

Recife, PE, Brazil

Present - 2024

Interinstitutional collaboration of researchers dedicated to climate change studies, with members from leading Brazilian universities—including UFPE, UFPB, UFMA, UFAL, USP, UnB, UFRN, PUC-Rio, and UFU—as well as international partners.

Sustentarea

Researcher

São Paulo, SP, Brazil

Present - 2024

Research and Extension Center affiliated with the School of Public Health (FSP) at the University of São Paulo (USP), dedicated to promoting scientific research in food systems, sustainable food, and the global syndemic.

rOpenSci

Software Developer and Maintainer

Berkeley, CA, United States

Present - 2021

International nonprofit organization that promotes open and reproducible research using the R programming language.

Interdisciplinary Sleep Research Group (GIPSO)

Researcher

São Paulo, SP, Brazil

2022 - 2016

Research group affiliated with the School of Arts, Sciences, and Humanities (EACH) at the University of São Paulo (USP).

Modelos Baseados em Agentes (Agent-Based Models)

University of São Paulo (USP)

São Paulo, SP, Brazil

2024

In-person course on agent-based modeling with a focus on public health. Instruction was provided by Leandro Garcia, Senior Lecturer in Complexity Science in Public Health at the Centre for Public Health, Queen’s University Belfast.

• Duration: 4 days (28 hours)

Introduction to Agent-Based Modeling

Santa Fe Institute

Online (Complexity Explorer)

2024

Introductory course on agent-based modeling with a focus on applying the method to analyze complex systems across various fields, including economics, biology, political science, and management. The course was taught by Bill Rand, a professor of marketing at North Carolina State University and coauthor of An Introduction to Agent-Based Modeling—one of the most widely used textbooks in the field—written in collaboration with Uri Wilensky, the creator of NetLogo.

• Duration: 11 weeks (~66 hours)

São Paulo School of Advanced Science on Ecology of Human Sleep and Biological Rhythms

University of São Paulo (USP)

São Paulo, SP, Brazil

2022

In-person international school attended by 50 foreign and 50 Brazilian students, along with leading chronobiology experts from around the world. The event was held from November 11 to November 26, 2022, at the School of Public Health (FSP), University of São Paulo (USP).

• Duration: 8 days (68 hours)

Circadian Clocks: How Rhythms Structure Life

Ludwig-Maximilians-Universität München

Online (Coursera)

2022

Introductory course on chronobiology and circadian rhythms, taught by Martha Merrow and Till Roenneberg—two leading figures in the field of chronobiology.

• Duration: 1 week (~10 hours)

R Programming

Johns Hopkins University

Online (Coursera)

2020

Introductory course on R taught by Roger D. Peng, Jeff Leek, and Brian Caffo—well-known contributors to the global R community.

• Duration: 2 weeks (~20 hours)

Biologia do Sono (Sleep Biology)

University of São Paulo (USP)

São Paulo, SP, Brazil

2019

In-person introductory in-person course on sleep biology, taught by Mario Pedrazzoli, my former supervisor at the University of São Paulo.

• Duration: 1 week (35 hours)

Access and Use of Technical-Scientific Information

University of São Paulo (USP)

São Paulo, SP, Brazil

2013

In-person introductory course on literature review and evidence synthesis, taught by Helene Mariko Ueno, professor of public health at the School of Arts, Sciences, and Humanities (EACH), USP.

• Duration: 1 week (16 hours)

Art and Technique of Academic Writing

University of São Paulo (USP)

São Paulo, SP, Brazil

2013

In-person introductory course on scientific writing.

• Duration: 1 week (20 hours)

Technological and Industrial Development (DTI-B) Research Fellowship

National Council for Scientific and Technological Development (CNPq)

N/A

2025 - 2024

• Project title: Global syndemic: The impact of anthropogenic climate change on the health and nutrition of children under five attended by the unified health system (SUS)
• Process number: 383172/2024-1

Master’s Research Fellowship

Coordination for the Improvement of Higher Education Personnel (CAPES)

N/A

2024 - 2022

• Project title: Is latitude associated with chronotype?
• Process number: 88887.703720/2022-00

2nd Best Work

30th International Symposium on Undergraduate Research of the University of São Paulo (SIICUSP)

N/A

2023

2nd place in the Best Works Award from the School of Arts, Sciences, and Humanities (EACH) of the University of São Paulo (USP) in the field of Exact and Earth Sciences.

Undergraduate Fellowships

University of São Paulo (USP)

N/A

2021 - 2016

• Multiple fellowships supporting research, cultural, extension, and entrepreneurship activities
• As a researcher at the Interdisciplinary Sleep Research Group (GIPSO), I wrote several proposals for undergraduate research and extension activities, securing more than 10 fellowships, which were distributed among group members

Best-Performing Project

Innovation and Entrepreneurship Incentive Program (InovaGrad) of the University of São Paulo (USP)

N/A

2019

Best-performing project from the School of Arts, Sciences, and Humanities (EACH) of the University of São Paulo (USP).

Durma na EACH (Sleep at EACH)

University of São Paulo (USP)

São Paulo, SP, Brazil

2018 - 2017

Wellness project focused on creating sleep spaces for students, developed at the School of Arts, Sciences, and Humanities (EACH), University of São Paulo.

Prediction and Interaction in Agent-Based Models

Agent-Based Modeling Study Group

Online

2025

Delivered at the Agent-Based Modeling Study Group, University of São Paulo, on April 15, 2025.

Modeling the Global Syndemic with ABM

University of São Paulo (USP)

São Paulo, SP, Brazil

2025

Delivered as part of the Systems Thinking and Complex Systems in Public Health Nutrition graduate course at the Faculty of Public Health (FSP), University of São Paulo, on March 3, 2025.

Exploring Complexity with Agent-Based Models

RESICLIMA Network

Recife, PE, Brazil

2024

Delivered at the First Meeting of Multidisciplinary Perspectives on Climate Change, organized by the RESICLIMA Network, on August 15, 2024

{mctq}: An R Package for the Munich ChronoType Questionnaire

useR! 2021 Conference

Held online due to COVID-19

2021

Delivered as an Elevator Pitch at useR! 2021 — The R Programming Global Conference, on July 5, 2021.

FoodClim

Creator and Maintainer

N/A

2025

NetLogo model designed to simulate how food yield responds to different climate conditions. Runs in parallel with LogoClim using the LevelSpace extension

LogoClim

Creator and Maintainer

N/A

2025

NetLogo model developed to simulate and visualize climate conditions using data from WorldClim 2.1.

• An article about this model is being prepared for the Journal of Open Source Software (JOSS)

SISVAN Nutritional Status Pipeline

Creator and Maintainer

N/A

2025

A reproducible R pipeline for processing SISVAN microdata on nutritional status monitoring in Brazil.

actverse

Creator and Maintainer

N/A

2025

R package providing a tidyverse-style toolbox for actigraphy data analysis.

CRAN Logs

Creator and Maintainer

N/A

2025

Shiny dashboard for visualizing download statistics from the Comprehensive R Archive Network (CRAN).

ODD Protocol Template

Creator and Maintainer

N/A

2025

LaTeX and Google Docs template for the ODD protocol, compliant with the formatting guidelines of the American Psychological Association (APA).

groomr

Creator and Maintainer

N/A

2025

R package with tools to efficiently tidy and organize R objects and files.

orbis

Creator and Maintainer

N/A

2025

R package with tools to simplifying spatial data analysis.

quartor

Creator and Maintainer

N/A

2025

R package that provides a set of tools designed to facilitate the use of the Quarto publishing system.

brandr

Creator and Maintainer

N/A

2024

R package developed for managing brand visual identity in data products using the brand.yml standard.

• Published on The Comprehensive R Archive Network (CRAN)

prettycheck

Creator and Maintainer

N/A

2024

R package for expressive and user-friendly assertive programming.

entrainment

Creator and Maintainer

N/A

2024

Experimental Python rule-based model of 24-hour light/dark cycle entrainment.

html-colors

Creator and Maintainer

N/A

2024

Espanso package for seamlessly inserting HTML color codes into text.

abnt

Creator and Maintainer

N/A

2023

Quarto template for theses and dissertations following the Brazilian Association of Technical Standards (ABNT) guidelines.

iramuteqlike

Creator and Maintainer

N/A

2023

R package with tools to reproduce the IRaMuTeQ software analyses in R.

lubritime

Creator and Maintainer

N/A

2022

R package that extends the lubridate package from tidyverse with additional features for handling temporal objects.

mctq

Creator and Maintainer

N/A

2021

R package providing a tidyverse-style toolbox for processing and analyzing the Munich ChronoType Questionnaire (MCTQ).

• Published on The Comprehensive R Archive Network (CRAN) (+10,000 downloads)
• Peer-reviewed by the rOpenSci Initiative
• An article about this package is being prepared for the Journal of Open Source Software (JOSS)

lockr

Creator and Maintainer

N/A

2021

R package for easy file encryption and decryption.

refstudio

Creator and Maintainer

N/A

2021

R package with tools to extract and process bibliographic references.

Crowding

Creator and Maintainer

N/A

2012

NetLogo model developed to simulate attendance in bars and restaurants.

Is Latitude Associated with Chronotype?

University of São Paulo (USP)

N/A

2024

Vartanian, D. (2024). Is latitude associated with chronotype? [Master’s thesis, University of São Paulo]. https://doi.org/10.17605/OSF.IO/YGKTS

• Roles (CRediT): Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Software, Validation, Visualization, Writing – original draft, Writing – review & editing

Associations Between the Duration and Quality of Sleep in Third-Trimester Pregnant Women with the Duration of Labor: Preliminary Results

32nd International Symposium on Undergraduate Research of the University of São Paulo (SIICUSP)

N/A

2024

Lima, M. S., Sales, A. R. V., Vartanian, D., Andrade, M. A. M. de, Pedrazzoli, M., & Chofakian, C. B. do N. (2024, November 6). Associations between the duration and quality of sleep in third-trimester pregnant women with the duration of labor: Preliminary results [Poster presentation]. 32nd International Symposium on Undergraduate Research of the University of São Paulo, São Paulo, SP, Brazil. https://doi.org/10.13140/RG.2.2.18090.73927

Actigraphic Characterization of Sleep and Circadian Phenotypes of PER3 Gene VNTR Genotypes

Chronobiology International

N/A

2023

Viana-Mendes, J., Benedito-Silva, A. A., Andrade, M. A. M., Vartanian, D., Gonçalves, B. da S. B., Cipolla-Neto, J., & Pedrazzoli, M. (2023). Actigraphic characterization of sleep and circadian phenotypes of PER3 gene VNTR genotypes. Chronobiology International, 40(9), 1244–1250. https://doi.org/10.1080/07420528.2023.2256858

• Impact factor: 2.2/JCR (2023)
• Roles (CRediT): Data curation, Formal analysis, Methodology, Software, Writing – review & editing

Ecology of Sleep and Circadian Phenotypes of The Brazilian Population

São Paulo School of Advanced Science on Ecology of Human Sleep and Biological Rhythms

N/A

2022

Vartanian, D., & Pedrazzoli, M. (2022, November 19). Ecology of sleep and circadian phenotypes of the Brazilian population [Poster presentation]. São Paulo School of Advanced Science on Ecology of Human Sleep and Biological Rhythms, São Paulo, SP, Brazil. https://doi.org/10.13140/RG.2.2.25343.07840

Associations Between the Duration and Quality of Sleep of Pregnant Women in the Third Trimester with the Duration of Labor

São Paulo School of Advanced Science on Ecology of Human Sleep and Biological Rhythms

N/A

2022

Sales, A. R. V., Vartanian, D., Andrade, M. A. M., & Pedrazzoli, M. (2022, November 19). Associations between the duration and quality of sleep of pregnant women in the third trimester with the duration of labor [Poster presentation]. São Paulo School of Advanced Science on Ecology of Human Sleep and Biological Rhythms, São Paulo, SP, Brazil. https://doi.org/10.13140/RG.2.2.28698.52169

{actverse}: An R Package for Actigraphy Data Analysis

30th International Symposium on Undergraduate Research of the University of São Paulo (SIICUSP)

N/A

2022

Matias, V. A., Serrano, C., Vartanian, D., Pedrazzoli, M., & Benedito-Silva, A. A. (2022, September 3). {actverse}: An R package for actigraphy data analysis [Poster presentation]. 30th International Symposium on Undergraduate Research of the University of São Paulo, São Paulo, SP, Brazil. https://doi.org/10.13140/RG.2.2.12760.16643

Brazilian Actigraphy Consensus

Segmento Farma Editores

N/A

2021

Pedrazzoli, M., & Gonçalves, B. S. B. (Eds.) (with Benedito-Silva, A. A., Toscanini, A. C., Souza, A. P. P. B., Conway, B. A., Vartanian, D., Santos, E. H. R., Pires, M. L. N., & Leocadio-Miguel, M. A.). (2021). Consenso brasileiro de actigrafia [Brazilian actigraphy consensus]. Segmento Farma Editores.

• Roles (CRediT): Conceptualization, Methodology, Investigation, Project administration, Writing – original draft, Writing – review & editing

Technical Specifications and Recommendations for the Use of Actigraphy

Segmento Farma Editores

N/A

2021

Benedito-Silva, A. A., Gonçalves, B. S. B., Vartanian, D., & Santos, E. H. R. (2021). Especificações técnicas e recomendações sobre o uso da actigrafia [Technical specifications and recommendations for the use of actigraphy]. In M. Pedrazzoli & B. da S. B. Gonçalves (Eds.), Consenso brasileiro de actigrafia [Brazilian actigraphy consensus] (pp. 13–28). Segmento Farma Editores.

• Roles (CRediT): Conceptualization, Methodology, Investigation, Project administration, Writing – original draft, Writing – review & editing

Sleep and Biological Rhythm Variables in Actigraphy

Segmento Farma Editores

N/A

2021

Benedito-Silva, A. A., Souza, A. P. P. B., Toscanini, A. C., Conway, B. A., Gonçalves, B. S. B., Vartanian, D., Pires, M. L. N., Leocadio-Miguel, M. A., & Pedrazzoli, M. (2021). Variáveis de sono e ritmos biológicos na actigrafia [Sleep and biological rhythm variables in actigraphy]. In M. Pedrazzoli & B. da S. B. Gonçalves (Eds.), Consenso brasileiro de actigrafia [Brazilian actigraphy consensus] (pp. 29–42). Segmento Farma Editores.

• Roles (CRediT): Conceptualization, Methodology, Investigation, Project administration, Writing – original draft, Writing – review & editing

Actigraphy in Research

Segmento Farma Editores

N/A

2021

Santos, E. H. R., Leocadio-Miguel, M. A., Vartanian, D., & Pedrazzoli, M. (2021). Actigrafia na pesquisa [Actigraphy in research]. In M. Pedrazzoli & B. da S. B. Gonçalves (Eds.), Consenso brasileiro de actigrafia [Brazilian actigraphy consensus] (pp. 43–62). Segmento Farma Editores.

• Roles (CRediT): Conceptualization, Methodology, Investigation, Project administration, Writing – original draft, Writing – review & editing

Actigraphic Data Collection – ActTrust

protocols.io

N/A

2021

Vartanian, D. (2021). Coleta de dados actigráficos – ActTrust [Actigraphic data collection – ActTrust]. protocols.io. https://doi.org/10.17504/protocols.io.4r3l241x4g1y/v4

• Roles (CRediT): Conceptualization, Methodology, Investigation, Project administration, Writing – original draft, Writing – review & editing

Expression of the Sleep-Wake Cycle Throughout Pregnancy: A Systematic Literature Review

28th International Symposium on Undergraduate Research of the University of São Paulo (SIICUSP)

N/A

2021

Sales, A. R. V., Vartanian, D., Rodrigues, I., & Pedrazzoli, M. (2020, November 11). Expression of the sleep-wake cycle throughout pregnancy: A systematic literature review [Poster presentation]. 28th International Symposium on Undergraduate Research of the University of São Paulo, São Paulo, SP, Brazil. https://doi.org/10.13140/RG.2.2.29742.79682

{mctq}: An R package for the Munich ChronoType Questionnaire

16th Latin American Symposium on Chronobiology (LASC)

N/A

2021

Vartanian, D., Benedito-Silva, A. A., & Pedrazzoli, M. (2021, October 6). {mctq}: An R package for the Munich ChronoType Questionnaire [Poster presentation]. XVI Latin American Symposium on Chronobiology, Buenos Aires, Argentina. https://doi.org/10.13140/RG.2.2.32357.92645

Early Chronotype with Advanced Activity Rhythms and Dim Light Melatonin Onset in a Rural Population

Journal of Pineal Research

N/A

2020

Ruiz, F. S., Beijamini, F., Beale, A. D., Gonçalves, B. D. S. B., Vartanian, D., Taporoski, T. P., Middleton, B., Krieger, J. E., Vallada, H., Arendt, J., Pereira, A. C., Knutson, K. L., Pedrazzoli, M., & Von Schantz, M. (2020). Early chronotype with advanced activity rhythms and dim light melatonin onset in a rural population. Journal of Pineal Research, 69(3). https://doi.org/10.1111/jpi.12675

• Impact factor: 8.3/JCR (2023)

First Meeting of Multidisciplinary Perspectives on Climate Change of the RESICLIMA Network

Participant and Speaker

Recife, PE, Brazil

2024

30th International Symposium on Undergraduate Research of the University of São Paulo (SIICUSP)

Reviewer

São Paulo, SP, Brazil

2022

São Paulo School of Advanced Science on Ecology of Human Sleep and Biological Rhythms

Participant

São Paulo, SP, Brazil

2022

18th Brazilian Sleep Congress

Participant and Speaker

São Paulo, SP, Brazil

2021

useR! 2021 Conference

Participant and Speaker

Zürich, Switzerland (held online due to COVID-19)

2021

16th Latin American Symposium on Chronobiology (LASC)

Participant

Buenos Aires, Argentina (held online due to COVID-19)

2021

16th Brazilian Symposium on Chronobiology (SBCRONO)

Participant and Speaker

Uberlândia, MG, Brazil (held online due to COVID-19)

2021

28th International Symposium on Undergraduate Research of the University of São Paulo (SIICUSP)

Participant

São Paulo, SP, Brazil (held online due to COVID-19)

2021

15th Brazilian Symposium on Chronobiology (SBCRONO)

Participant and Organizer

Tijucas do Sul, PR, Brazil

2018