We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.
To save content items to your account,
please confirm that you agree to abide by our usage policies.
If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account.
Find out more about saving content to .
To save content items to your Kindle, first ensure no-reply@cambridge.org
is added to your Approved Personal Document E-mail List under your Personal Document Settings
on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part
of your Kindle email address below.
Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations.
‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi.
‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
What is a stem cell? The answer is seemingly obvious: a cell that is also a stem, or point of origin, for something else. Upon closer examination, however, this combination of ideas leads directly to fundamental questions about biological development. A cell is a basic category of living thing; a fundamental 'unit of life.' A stem is a site of growth; an active source that supports or gives rise to something else. Both concepts are deeply rooted in biological thought, with rich and complex histories. The idea of a stem cell unites them, but the union is neither simple nor straightforward. This book traces the origins of the stem cell concept, its use in stem cell research today, and implications of the idea for stem cell experiments, their concrete results, and hoped-for clinical advances.
This Element discusses how shiny, an R package, can help instructors teach quantitative methods more effectively by way of interactive web apps. The interactivity increases instructors' effectiveness by making students more active participants in the learning process, allowing them to engage with otherwise complex material in an accessible, dynamic way. The Element offers four detailed apps that cover two fundamental linear regression topics: estimation methods (least squares, maximum likelihood) and the classic linear regression assumptions. It includes a summary of what the apps can be used to demonstrate, detailed descriptions of the apps' full capabilities, vignettes from actual class use, and example activities. Two other apps pertain to a more advanced topic (LASSO), with similar supporting material. For instructors interested in modifying the apps, the Element also documents the main apps' general code structure, highlights some of the more likely modifications, and goes through what functions need to be amended.
We discuss whole-child development, learning, and thriving through a dynamic systems theory lens that focuses on the United States and includes an analysis of historical challenges in the American public education system, including inequitable resources, opportunities, and outcomes. To transform US education systems, developmental and learning scientists, educators, policymakers, parents, and communities must apply the knowledge they have today to 1. challenge the assumptions and goals that drove the design of the current US education system, 2. articulate a revised, comprehensive definition of whole-child development, learning, and thriving that accepts rather than simplifies how human beings develop, 3. create a profound paradigm shift in how the purpose of education is described in the context of social, cultural, and political forces, including the impacts of race, privilege, and bias and 4. describe a new dynamic 'language' for measurement of both the academic competencies and the full set of 21st century skills.
Humans may live in the Anthropocene, but this does not affect all in the same way. How would the Anthropocene look if, instead of searching its traces in the geosphere, researchers would look for them in the organosphere, in the ecologies of humans in their entanglements with the environment? Looking at this embodied stratigraphy of power and toxicity, more than the Anthropocene, we will discover the Wasteocene. The imposition of wasting relationships on subaltern human and more-than-human communities implies the construction of toxic ecologies made of contaminating substances and narratives. While official accounts have systematically erased any trace of those wasting relationships, another kind of narrative has been written in flesh, blood, and cells. Traveling between Naples (Italy) and Agbogbloshie (Ghana), science fiction and epidemic outbreaks, this Element will take the readers into the bowels of the Wasteocene, but it will also indicate the commoning practices which are dismantling it.
Complaints are often made that recommendations about how to rear children are contradictory and, therefore, not helpful. In this Element we survey the history of theory and research relevant to childrearing in an attempt to show how apparent differences can be resolved. We suggest that socialization occurs in different domains, with each domain fostering socialization in a different way. Thus there is no all-purpose principle or mechanism of socialization but, rather, different forms of relationship between child and agent that serve a different function, involve different rules for effecting behavior change, and facilitate different outcomes. Using this framework, we survey research relevant to different domains, including the roles played by parents, siblings, and peers in the socialization process. We follow this with a discussion of how culture and biology make their contribution to an understanding of domains of socialization.
New material attributable to Deltasuchus motherali, a neosuchian from the Cenomanian of Texas, provides sampling across much of the ontogeny of this species. Detailed descriptions provide information about the paleobiology of this species, particularly with regards to how growth and development affected diet. Overall snout shape became progressively wider and more robust with age, suggesting that dietary shifts from juvenile to adult were not only a matter of size change, but of functional performance as well. These newly described elements provide additional characters upon which to base more robust phylogenetic analyses. The authors provide a revised diagnosis of this species, describing the new material and discussing incidents of apparent ontogenetic variation across the sampled population. The results of the ensuing phylogenetic analyses both situate Deltasuchus within an endemic clade of Appalachian crocodyliforms, separate and diagnosable from goniopholidids and pholidosaurs, herein referred to as Paluxysuchidae. This title is also available as Open Access on Cambridge Core.
Research on international norms has yet to answer satisfactorily some of our own most important questions about the origins of norms and the conditions under which some norms win out over others. The authors argue that international relations (IR) theorists should engage more with research in moral psychology and neuroscience to advance theories of norm emergence and resonance. This Element first provides an overview of six areas of research in neuroscience and moral psychology that hold particular promise for norms theorists and international relations theory more generally. It next surveys existing literature in IR to see how literature from moral psychology is already being put to use, and then recommends a research agenda for norms researchers engaging with this literature. The authors do not believe that this exchange should be a one-way street, however, and they discuss various ways in which the IR literature on norms may be of interest and of use to moral psychologists, and of use to advocacy communities.
Natural selection causes adaptation, the fit between an organism and its environment. For example, the white and grey coloration of snowy owls living and breeding around the Arctic Circle provides camouflage from both predators and prey. In this Element, we explore a variety of such outcomes of the evolutionary process, including both adaptations and alternatives to adaptations, such as nonadaptive traits inherited from ancestors. We also explore how the concept of adaptation is used in evolutionary psychology and in animal behavior, and the adequacy of methods used to confirm evolutionary accounts of human traits and behaviors.
Reprinting, republishing and re-covering old books in new clothes is an established publishing practice. How are books that have fallen out of taste and favour resituated by publishers, and recognised by readers, as relevant and timely? This Element outlines three historical textures within British culture of the late 1970s and early 1980s – History, Remembrance and Heritage – that enabled Virago's reprint publishing to become a commercial and cultural success. With detailed archival case studies of the Virago Reprint Library, Testament of Youth and the Virago Modern Classics, it elaborates how reprints were profitable for the publisher and moved Virago's books - and the Virago brand name - from the periphery of culture to the centre. Throughout Virago's reprint publishing - and especially with the Modern Classics - the epistemic revelation that women writers were forgotten and could, therefore, be rediscovered, was repeated, again and again, and made culturally productive through the marketplace.
A posthumanist approach problematizes the separateness and centrality of humans in understanding the world around us. Posthumanism does not deny the role of humans but questions the assumption that it is human activity and agency that should be given pride of place in any analysis of social activity. This carries important and interesting implications for the study of World Englishes, some of which are explored in this Element. Sections 3 and 4, respectively, explore posthumanism in relation to two specific topics in World Englishes, creativity and language policy. These topics have been chosen because they allow us to see the contributions that posthumanism can make to a micro-level (creativity) as well as macro-level (language policy) topic.
This Cambridge Element examines the role and nature of focus on form in second language acquisition. An overall assessment of the role of instruction and the nature of language is provided. Instruction might have a facilitative role in the rate of acquisition. The Element briefly reviews empirical research examining the relative effects of different types of focus on form and presents some of the key implications for second language learning and teaching. An effective focus on form type is one that is input and meaning oriented. Manipulating input to facilitate language processing and form-meaning connections might enhance second language acquisition.
Insect-scale flapping wing flight vehicles can conduct environmental monitoring, disaster assessment, mapping, positioning and security in complex and challenging surroundings. To develop bio-inspired flight vehicles, systematic probing based on the particular category of flight vehicles is needed. This Element addresses the aerodynamics, aeroelasticity, geometry, stability and dynamics of flexible flapping wings in the insect flight regime. The authors highlight distinct features and issues, contrast aerodynamic stability between rigid and flexible wings, present the implications of the wing-aspect ratio, and use canonical models and dragonflies to elucidate scientific insight as well as technical capabilities of bio-inspired design.
This Element aims to connect the literature of street-level bureaucrats with that of policy entrepreneurship in order to analyze why and how bureaucrats operating at the street level can promote policy change in public administration at the individual level. I demonstrate how street-level bureaucrats act as policy entrepreneurs in different contexts around the globe to promote policy change and analyze what they think of policy entrepreneurship and what they do about it in practice. For this purpose, I use multiple research methods: a survey, in-depth interviews, focus groups and textual analyses. I also offer recommendations to decision-makers to promote street-level policy entrepreneurship, highlighting the benefits of doing so. Lastly, I critically discuss the normative aspects of street-level policy entrepreneurship: ultimately, is it desirable?