Stockholm University

About: Stockholm University is a education organization based out in Stockholm, Sweden. It is known for research contribution in the topics: Population & Supernova. The organization has 21052 authors who have published 62567 publications receiving 2725859 citations. The organization is also known as: University of Stockholm & Stockholms universitet.

News Droughts, News Floods, and U. S. Disaster Relief

Abstract: This paper studies the influence of mass media on U. S. government response to approximately 5,000 natural disasters occurring between 1968 and 2002. These disasters took nearly 63,000 lives and affected 125 million people per year. We show that U. S. relief depends on whether the disaster occurs at the same time as other newsworthy events, such as the Olympic Games, which are obviously unrelated to need. We argue that the only plausible explanation of this is that relief decisions are driven by news coverage of disasters and that the other newsworthy material crowds out this news coverage.

Twenty-three unsolved problems in hydrology (UPH)–a community perspective

Abstract: This paper is the outcome of a community initiative to identify major unsolved scientific problems in hydrology motivated by a need for stronger harmonisation of research efforts. The procedure involved a public consultation through online media, followed by two workshops through which a large number of potential science questions were collated, prioritised, and synthesised. In spite of the diversity of the participants (230 scientists in total), the process revealed much about community priorities and the state of our science: a preference for continuity in research questions rather than radical departures or redirections from past and current work. Questions remain focused on the process-based understanding of hydrological variability and causality at all space and time scales. Increased attention to environmental change drives a new emphasis on understanding how change propagates across interfaces within the hydrological system and across disciplinary boundaries. In particular, the expansion of the human footprint raises a new set of questions related to human interactions with nature and water cycle feedbacks in the context of complex water management problems. We hope that this reflection and synthesis of the 23 unsolved problems in hydrology will help guide research efforts for some years to come.

Cellular movement and contact in sea urchin morphogenesis

Abstract: V. Blastula formation . . . . . . . . . . . VI. Changes in shape of the blastula and the gastrula ectoderm . . . ( I ) Llorphopenetic models and their application. . . . . (2) Structural and biochemical basis for the differences in cell contact (3) Dynamic properties of the cell sheets . . . . , . VII. Arm formation . . . . . . . . . . . \-111. Morphogenesis of the mesenchyme, skeleton and archenteron . . ( I ) General features and morphogenetic models. . . . . (2) The primary mesenchyme and the basis of its pattern . . . (3) Development of the skeleton . . . . . . . (4) Gastrulation . . . . . . . . . . (j) The secondary mesenchyme. . . . . . . . (6) Pseudopodal activity, contact paralysis and contact inhibition . . , IX. Early morphogenesis of the archenteron after its invagination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . * . . X. Further morphogenesis of the archenteron and mouth formation . ( I ) Subdivision of the coelom and mouth formation . . . (2) Development of the peristaltic network around the oesophagus

Advancing Urban Ecology toward a Science of Cities

Abstract: Urban ecology is a field encompassing multiple disciplines and practical applications and has grown rapidly. However, the field is heterogeneous as a global inquiry with multiple theoretical and conceptual frameworks, variable research approaches, and a lack of coordination among multiple schools of thought and research foci. Here, we present an international consensus on how urban ecology can advance along multiple research directions. There is potential for the field to mature as a holistic, integrated science of urban systems. Such an integrated science could better inform decisionmakers who need increased understanding of complex relationships among social, ecological, economic, and built infrastructure systems. To advance the field requires conceptual synthesis, knowledge and data sharing, cross-city comparative research, new intellectual networks, and engagement with additional disciplines. We consider challenges and opportunities for understanding dynamics of urban systems. We suggest pathways for advancing urban ecology research to support the goals of improving urban sustainability and resilience, conserving urban biodiversity, and promoting human well-being on an urbanizing planet.