University of Copenhagen

About: University of Copenhagen is a education organization based out in Copenhagen, Denmark. It is known for research contribution in the topics: Population & Galaxy. The organization has 57645 authors who have published 149740 publications receiving 5903093 citations. The organization is also known as: Copenhagen University & Københavns Universitet.

Subjectivity and Selfhood: Investigating the First-Person Perspective

Abstract: What is a self? Does it exist in reality or is it a mere social construct -- or is it perhaps a neurologically induced illusion? The legitimacy of the concept of the self has been questioned by both neuroscientists and philosophers in recent years Countering this, in Subjectivity and Selfhood, Dan Zahavi argues that the notion of self is crucial for a proper understanding of consciousness He investigates the interrelationships of experience, self-awareness, and selfhood, proposing that none of these three notions can be understood in isolation Any investigation of the self, Zahavi argues, must take the first-person perspective seriously and focus on the experiential givenness of the self Subjectivity and Selfhood explores a number of phenomenological analyses pertaining to the nature of consciousness, self, and self-experience in light of contemporary discussions in consciousness research Philosophical phenomenology -- as developed by Husserl, Heidegger, Sartre, Merleau-Ponty, and others -- not only addresses crucial issues often absent from current debates over consciousness but also provides a conceptual framework for understanding subjectivity Zahavi fills the need -- given the recent upsurge in theoretical and empirical interest in subjectivity -- for an account of the subjective or phenomenal dimension of consciousness that is accessible to researchers and students from a variety of disciplines His aim is to use phenomenological analyses to clarify issues of central importance to philosophy of mind, cognitive science, developmental psychology, and psychiatry By engaging in a dialogue with other philosophical and empirical positions, says Zahavi, phenomenology can demonstrate its vitality and contemporary relevance

Majorana zero modes in superconductor–semiconductor heterostructures

Abstract: Realizing topological superconductivity and Majorana zero modes in the laboratory is a major goal in condensed-matter physics. In this Review, we survey the current status of this rapidly developing field, focusing on proposals for the realization of topological superconductivity in semiconductor–superconductor heterostructures. We examine materials science progress in growing InAs and InSb semiconductor nanowires and characterizing these systems. We then discuss the observation of robust signatures of Majorana zero modes in recent experiments, paying particular attention to zero-bias tunnelling conduction measurements and Coulomb blockade experiments. We also outline several next-generation experiments probing exotic properties of Majorana zero modes, including fusion rules and non-Abelian exchange statistics. Finally, we discuss prospects for implementing Majorana-based topological quantum computation.

Signals from the gut microbiota to distant organs in physiology and disease

Abstract: The ecosystem of the human gut consists of trillions of bacteria forming a bioreactor that is fueled by dietary macronutrients to produce bioactive compounds. These microbiota-derived metabolites signal to distant organs in the body, which enables the gut bacteria to connect to the immune and hormone system, to the brain (the gut-brain axis) and to host metabolism, as well as other functions of the host. This microbe-host communication is essential to maintain vital functions of the healthy host. Recently, however, the gut microbiota has been associated with a number of diseases, ranging from obesity and inflammatory diseases to behavioral and physiological abnormalities associated with neurodevelopmental disorders. In this Review, we will discuss microbiota-host cross-talk and intestinal microbiome signaling to extraintestinal organs. We will review mechanisms of how this communication might contribute to host physiology and discuss how misconfigured signaling might contribute to different diseases.

Channels of Interstate Risk Sharing: United States 1963–1990

Abstract: We develop a framework for quantifying the amount of risk sharing among states in the United States, and construct data that allow us to decompose the cross-sectional variance in gross state product into several components which we refer to as levels of smoothing. We find that 39 percent of shocks to gross state product are smoothed by capital markets, 13 percent are smoothed by the federal government, and 23 percent are smoothed by credit markets. The remaining 25 percent are not smoothed. We also decompose the federal government smoothing into subcategories: taxes, transfers, and grants to states.