Stanford University
Showing 32,951-33,000 of 37,039 Results
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Hannah Valantine
Professor of Medicine (Cardiovascular)
Current Research and Scholarly InterestsMy lab is focused on understanding the mechanism mediating acute and chronic allograft failure, in particular on the role of microvascular injury in acute allograft failure and the mechanisms of mediating transplant coronary artery disease. 1. Role of microvascular injury in acute allograft failure.
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Brenda Valdes
Ph.D. Student in Education, admitted Autumn 2024
Research Assistant, Padilla ProgramCurrent Research and Scholarly InterestsBrenda is a developmental Psychologist specializing in longitudinal quantitative methods to study variation in learning and language development. Her research examines how individual and contextual factors shape students’ developmental trajectories across time, with an emphasis on patterns in academic growth.
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Guadalupe Valdés
Bonnie Katz Tenenbaum Professor of Education, Emerita
Current Research and Scholarly InterestsValdés is the Founder and Executive Director of "English Together" a 501(c)(3) organization. The organization creates rich connections between ordinary speakers of English and low-wage, immigrant workers by preparing volunteers to provide one-on-one “coaching” in workplace English.
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Juan Rafael Valdez
Lecturer
BioJuan R. Valdez is a teacher and a writer. He enjoys teaching as a way of helping students to optimally develop their communicative skills, while they also develop a critical sense of community and coexistence in a diverse and complex world. Juan belongs to the tradition of maroon intellectuals and socionaturalists who like to roam between the city and the wilderness and between science and literature. His writings explore the experiences, visions, and stories of those who walk the earth and leave little trace. His publications include: Tracing Dominican identity: the writings of Pedro Henríquez Ureña (Palgrave Macmillan, 2011) and En busca de la identidad: la obra de Pedro Henríquez Ureña (Ediciones Katatay, 2015). His latest book Sendas Extraviadas (Universidad Autónoma Metropolitana-UAM, 2024) is a series of essays on "aimless" walking that explore the possibility of overcoming perilous notions of politics, absurd racism, and consumerist madness. It also proposes strengthening our sense of place and belonging in the world by cultivating our relationship with nature. When Juan is not teaching, studying, or reading, he's hiking, tending to his plants, and having a good laugh.
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Tulio Valdez, MD, MSc
Professor of Otolaryngology - Head & Neck Surgery (OHNS) and, by courtesy, of Pediatrics
BioDr. Tulio A Valdez is a surgeon scientist with a subspecialty interest in Pediatric Otolaryngology. He attended medical school at Universidad Javeriana in Bogota Colombia before undertaking his residency in Otolaryngology, Head and Neck Surgery in Boston. He completed his Pediatric Otolaryngology Fellowship at Texas Children’s Hospital (2007), Houston and obtained his Master’s in Clinical and Translational Research at the University of Connecticut.
Clinically, Dr. Valdez has an interest in pediatric sleep apnea. He has a special interest in the management of sinus disease in cystic fibrosis. Dr. Valdez has co-authored one textbook and numerous book chapters and scientific manuscripts. Dr. Valdez continues his clinical research in these areas, particularly with a focus on aerodigestive disorders.
Scientifically, Dr. Valdez has developed various imaging methods to diagnose otitis media and cholesteatoma a middle ear condition that can lead to hearing loss. He was part of the Laser Biomedical Research Center at the Massachusetts Institute of Technology. His research includes novel imaging modalities to better diagnose ear infections one of the most common pediatric problems. His research has now expanded to include better intraoperative imaging modalities in pediatric patients to improve surgical outcomes without the need for radiation exposure.
Dr. Valdez believes in multi-disciplinary collaborations to tackle medical problems and has co-invented various medical devices and surgical simulation models. -
Carlos Valencia
Undergraduate, Mechanical Engineering
BioBorn in Camarillo, California, Carlos Valencia learned early that challenges forge resilience. As the son of a hard-working immigrant family, he spent summers working in the avocado and lemon industry—a childhood that taught him the value of grit and the power of opportunity. Today, as a Mechanical Engineering student at Stanford University, he channels that determination into robotics, education advocacy, and uplifting communities.
Carlos loves learning about robotic technology and has worked on numerous projects related to the field. Carlos’s passion for engineering took root in high school. As the former president of the ACHS MESA (Mathematics, Engineering, Science, & Achievement) chapter, he mentored 45+ first-generation students, leading them to compete in national STEM competitions. In the summer of 2024, he worked with L5 Automation, a robotics company based in La Cañada, CA, in Olmos, Peru where he helped develop harvesting platforms for one of the largest agriculture producers in Peru.
Beyond engineering, believes in the power of storytelling to inspire action. His TEDx talk, “Avocados Rot” drew from his upbringing to challenge audiences to seize fleeting chances—a message that resonated globally. Recognized as Camarillo Youth of the Year (2023) and awarded the Bronze Volunteer Award by the American Red Cross, he balances innovation with service, whether rebuilding communities after disasters or leading robotics teams.
Carlos’s mission is to democratize STEM access. Carlos envisions a world where education erases barriers. He aims to pioneer low-cost robotic solutions for agriculture and healthcare while expanding mentorship networks for first-gen students. When not engineering or volunteering, he unwinds by hiking, playing pickup soccer, or tinkering with 3D printers. -
Mauricio Valencia
Director Corporate Relations, School of Engineering - External Relations
Current Role at StanfordDirector of Corporate Relations, School of Engineering
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Kristen Valenti-McKeen
Exhibits Librarian, Humanities Resource Group
Staff, Tech SupportBioKristen Valenti-McKeen is the Exhibitions & Engagement Librarian for the Silicon Valley Archives (SVA) at Stanford University Libraries and is responsible for the Hohbach Hall Exhibitions Program. The SVA is a unit of the History of Science & Technology Collections in the Humanities and Area Studies Resource Group. She designs, develops, and produces visitor-centered exhibitions and programs that create opportunities for object-based learning and foster discussion.
Kristen earned an MA in Museum Education from Tufts University, as well as a BA in Sociology and Anthropology from Stockton University. -
Keara E. Valentine
Clinical Assistant Professor, Psychiatry and Behavioral Sciences
BioKeara E. Valentine, Psy.D., is a clinical assistant professor at Stanford University School of Medicine in the Psychosocial Treatment Clinic and OCD Clinic, where she specializes in the assessment and treatment of OCD and related disorders. Dr. Valentine utilizes behavioral-based therapies including Cognitive Behavioral Therapy (CBT) and Exposure and Response Prevention (ERP) with children, adolescents, and adults experiencing anxiety-related disorders.
Dr. Valentine completed an APA accredited pre-doctoral internship at Alexian Brothers Behavioral Health Hospital, where she complete a rotation in OCD and anxiety disorders and a rotation in Eating Disorders. Dr. Valentine has experience working with individuals with OCD, anxiety, and/or eating disorders at various levels of care including outpatient, partial hospitalization, residential, and inpatient. -
Melissa Valentine
Associate Professor of Management Science and Engineering and Senior Fellow at the Stanford Institute for Human-Centered AI
Current Research and Scholarly InterestsAs societies develop and adopt new technologies, they fundamentally change how work is organized. The intertwined relationship between technology and organizing has played out time and again, and scholars predict that new internet and data analytic technologies will spur disruptive transformations to work and organizing.
These changes are already well-documented in the construction of new market arrangements by companies such as Upwork and TaskRabbit, which defined new categories of “gig workers.” Yet less is known about how internet and data analytic technologies are transforming the design of large, complex organizations, which confront and solve much different coordination problems than gig platform companies.
Questions related to the structuring of work in bureaucratic organizations have been explored for over a century in the industrial engineering and organizational design fields. Some of these concepts are now so commonplace as to be taken for granted. Yet there was a time when researchers, workers, managers, and policymakers defined and constructed concepts including jobs, careers, teams, managers, or functions.
My research program argues that some of these fundamental concepts need to be revisited in light of advances in internet and data analytic technologies, which are changing how work is divided and integrated in organizations and broader societies. I study how our prior notions of jobs, teams, departments, and bureaucracy itself are evolving in the age of crowdsourcing, algorithms, and increasing technical specialization. In particular, my research is untangling how data analytic technologies and hyper-specialization shape the division and integration of labor in complex, collaborative production efforts characteristic of organizations. -
Gregory Valiant
Associate Professor of Computer Science
On Leave from 10/01/2025 To 06/30/2026Current Research and Scholarly InterestsMy primary research interests lie at the intersection of algorithms, learning, applied probability, and statistics. I am particularly interested in understanding the algorithmic and information theoretic possibilities and limitations for many fundamental information extraction tasks that underly real-world machine learning and data-centric applications.
