A haunted doll is a doll that is believed to be possessed by a spirit, ghost, or supernatural entity. The concept often originates from folklore and urban legends, where people claim that certain dolls have exhibited eerie behavior, such as moving on their own, changing expressions, or even communicating with their owners. The fascination with haunted dolls has been popularized through various media, including books, movies, and television shows.

In set theory, a branch of mathematical logic, cardinal numbers are used to denote the size of sets. Cardinal numbers can be classified into different types, one of which is **limit cardinals**. A limit cardinal is a cardinal number that is not a successor cardinal. In simple terms, it does not directly follow another cardinal number in the hierarchy of cardinals.

The Differential Doppler Effect refers to the variation in the frequency (or wavelength) of waves emitted by a source that is moving relative to an observer, when there are multiple sources or multiple observers involved. This effect is particularly significant in scenarios where there are changes in velocity or direction between different sources or observers. The basic concept of the Doppler Effect describes how the observed frequency changes in relation to the relative motion between a source of waves (such as sound or light) and an observer.

Laser Doppler imaging (LDI) is a non-invasive diagnostic technique used to measure and visualize blood flow in tissues. It leverages the Doppler effect, which is the change in frequency or wavelength of light (or sound) in relation to an observer moving relative to the source of the waves. In the context of LDI, a laser beam is directed at the tissue of interest.

A lunar eclipse occurs when the Earth comes between the Sun and the Moon, causing the Earth's shadow to fall on the Moon. This can happen only during a full moon when the Sun, Earth, and Moon are aligned in a straight line or very close to it. There are three main types of lunar eclipses: 1. **Total Lunar Eclipse**: This occurs when the Earth’s umbra (the darkest part of its shadow) completely covers the Moon.

Roger Lhermitte (born 1918) is a French neurologist known for his contributions to neuroscience, particularly in the field of multiple sclerosis and its related conditions. One of his notable contributions is the "Lhermitte's sign," which refers to a sudden sensation like an electric shock that occurs in the spine and may radiate down the legs when the neck is flexed. This sign is often associated with multiple sclerosis but can also be seen in other neurological conditions.

"Ned Nefer" and "Teagan" appear to be specific characters or symbols that may relate to a particular context, such as literature, gaming, or popular media. However, as of my last knowledge update in October 2023, there is no widely recognized information on "Ned Nefer" and "Teagan.

Siebren van der Werf is a contemporary Dutch artist known for his innovative work that often explores the intersections of technology, art, and culture. He utilizes various mediums, including painting, digital projections, and installations, to create pieces that engage with themes such as perception, representation, and the impact of digital technology on contemporary life.

COCOA, which stands for "Collaborative and Cooperative Open Access," is not a widely recognized term specifically within digital humanities, and its usage may vary in different contexts. However, it suggests a framework or model focusing on collaboration and open access in academic and research projects, particularly in the digital humanities.

Ancient Greek philosophy of language encompasses various views and theories about the nature, function, and meaning of language as discussed by ancient philosophers. Key figures in this area include Socrates, Plato, and Aristotle, each of whom contributed to the understanding of language in different ways. 1. **Socrates**: Although Socrates did not write down his teachings, his approach to language is conveyed through the dialogues of Plato. Socrates emphasized the importance of definitions in understanding concepts and truth.

András P. Huhn is a professional known for his work in the field of computer science, specifically in areas like machine learning, data science, and artificial intelligence. He has been involved in research and development, and his work may encompass various aspects of technology and innovation in these fields.

"Dutch women physicists" refers to female physicists from the Netherlands, who may contribute significantly to various fields within physics, including theoretical physics, experimental physics, and applied physics. Like many countries, the Netherlands has its share of prominent women in physics, including researchers, educators, and leaders in academia and industry. Historically, women in physics faced significant challenges in gaining recognition and opportunities, but many have made substantial contributions to the field.

Freek J. Beekman is not a widely recognized figure as of my last update in October 2023, so specific information about him may not be readily available. It is possible that he could be a person involved in academia, research, or a specialized field, but I would need more context to provide accurate information.

Persis Drell is an American physicist and academic known for her work in particle physics and her leadership roles in higher education. She has held prominent positions in various institutions, including serving as the Dean of the Stanford University School of Engineering and the Director of the SLAC National Accelerator Laboratory. Drell has been recognized for her contributions to the field, particularly in areas related to the investigation of fundamental particles and their interactions.

Floris Takens is a Dutch mathematician known for his work in the field of dynamical systems and chaos theory. He is perhaps best recognized for the Takens' Theorem, which is a significant result in the study of dynamical systems, particularly in the context of reconstructing the state space of a dynamical system from time series data.

Natalie Dean is likely to refer to a prominent figure in the field of biostatistics and epidemiology, especially known for her work related to public health and statistical methods. As of my last update, she is an associate professor at the University of Florida and has contributed significantly to the understanding of infectious diseases and vaccine efficacy. Her work often involves the application of innovative statistical approaches to address complex health-related questions.

Ali H. Nayfeh is an American engineer and researcher known for his contributions to the field of mechanical engineering, particularly in the areas of nonlinear dynamics, vibrations, and control systems. He has authored numerous research papers and has made significant contributions to the understanding of complex dynamical systems, particularly in the study of stability and bifurcation phenomena in mechanical systems. Nayfeh has also been involved in educational initiatives and has taught at various institutions.

As of my last knowledge update in October 2021, Arnaud Chéritat is known in the context of enclosure game records and high-performance sailing or maritime activities. If there have been significant developments or changes regarding Arnaud Chéritat since then, I would recommend checking the latest sources or news articles for the most current information.

Dmitry Dolgopyat is a Russian-born Israeli gymnast known for his expertise in men's artistic gymnastics. He has competed at various international levels, including the Olympics. Dolgopyat gained significant recognition for his performances in events such as the floor exercise and vault. Notably, he won a gold medal in the floor exercise at the Tokyo 2020 Olympics (held in 2021 due to the COVID-19 pandemic).