As SLA diversifies in scope and scale, key questions remain open over the nature, development and use of a second (or third and additional) language. In this chapter, we evaluate the use of specific methods for different paradigms, while making the case for building inclusive and transdisciplinary connections to sustain the strength of the field. The chapter starts with research methodologies for investigating the development of L2 morpho-syntactic knowledge, as the traditional foundation of SLA. We distinguish between internal formal/cognitive questions around L2 linguistic representation and processing, typically focusing on group trends in quantitative findings, and external socially mediated research into L2 use, often focusing on exploratory individual experiences and motivation through qualitative data. We then present research into L2 phonology (L2 speech), complementing L2 morphosyntax in its focus on form, but often neglected in coverage of SLA research methodology. We finish by looking at implications for future SLA research, driven by greater interest in methodological rigor, replicability and open science, and the opportunities provided by the technological and social media revolution of recent years, e.g., using corpora, online/mobile platforms, and big data.

Now in its second edition, this handbook is a current overview of second language (L2) research, providing state-of-the-art synopses of recent developments in each subarea of the field and bringing together contributions by emerging scholars and experts in second language acquisition (SLA). Since the first edition, broad sociopolitical movements, alternative views of bilingualism, emergence of global markets, vast expansion of electronic resources, the development of social media and the availability of big data have transformed the discipline, and this edition has been thoroughly updated to address these changes. It is divided into six main parts: Part I situates SLA in terms of research and practice; Part II explores individual cognitive, age-related and neurolinguistic similarities and differences; Part III outlines external, sociocultural and interactive factors; Part IV presents profiles of bilinguals who take differing paths of acquisition; Part V describes interlanguage properties; and Part VI comprises clear models of L2 development.

Complex fluids can be found all around us, from molten plastics to mayonnaise, and understanding their highly nonlinear dynamics is the subject of much research.

This text introduces a common theoretical framework for understanding and predicting the flow behavior of complex fluids. This framework allows for results including a qualitative understanding of the relationship between a fluid’s behavior at the microscale of particles or macromolecules, and its macroscopic, viscoelastic properties. The author uses a microstructural approach to derive constitutive theories that remain simple enough to allow computational predictions of complicated macroscale flows.

Readers develop their intuition to learn how to approach the description of materials not covered in the book, as well as limits such as higher concentrations that require computational methods for microstructural analysis.

This monograph’s unique breadth and depth make it a valuable resource for researchers and graduate students in fluid mechanics.

During Reconstruction, Bieral navigated shifting political landscapes, aligning with Republicans while maintaining ties to Democratic vice networks. His role in the Fisk–Stokes–Mansfield triangle and the Erie Railroad conflicts exemplifies the entanglement of personal vendettas, corporate power, and political violence. Bieral’s marriage to a Black woman suggests he embraced his ambiguous racial identity and repudiated his former support for white supremacy. The chapter explores the limits of reform and the endurance of patronage, highlighting Bieral’s ability to adapt and survive amid institutional change. His career reflects the uneasy coexistence of legality and lawlessness in Gilded Age America.

Now in its second edition, this handbook is a current overview of second language (L2) research, providing state-of-the-art synopses of recent developments in each subarea of the field and bringing together contributions by emerging scholars and experts in second language acquisition (SLA). Since the first edition, broad sociopolitical movements, alternative views of bilingualism, emergence of global markets, vast expansion of electronic resources, the development of social media and the availability of big data have transformed the discipline, and this edition has been thoroughly updated to address these changes. It is divided into six main parts: Part I situates SLA in terms of research and practice; Part II explores individual cognitive, age-related and neurolinguistic similarities and differences; Part III outlines external, sociocultural and interactive factors; Part IV presents profiles of bilinguals who take differing paths of acquisition; Part V describes interlanguage properties; and Part VI comprises clear models of L2 development.

Chapter 6 opens with a discussion of some of the letters Keats sent his brother and sister-in-law after they migrated to America in the summer of 1818. It explores the paradox that letters can at times generate a sense of intimacy not so much in spite of distance but because of it. It looks at the way in which Keats can find people ‘pressing’ on him, and even oppressive, such that he can seem to value the prosthetic sense of presence offered by a letter and the personal space it can allow a different kind of intimacy. The second half of the chapter considers letters as ‘touching’, particularly in relation to Keats’s love letters to Fanny Brawne, where he seems particularly attuned to the physical touch of a letter and the way that a letter can be emotionally ‘touching’ precisely because it is distanced, mediated, and delayed.

Bieral’s service in the Civil War, particularly at the Battle of Ball’s Bluff, transformed his public image from thug to hero. The chapter chronicles his bravery, injuries, and subsequent court martial, revealing tensions between his violent past and military discipline. Bieral’s postwar activities – supporting Reconstruction, working in customs, and engaging in political violence – illustrate the persistence of private coercion in public life. His association with figures such as Boss Tweed and involvement in the Erie Railroad wars underscore the continuity of corruption and brutality. The chapter situates Bieral within the contested terrain of postbellum governance and reform.

Ocean acidification (OA) science has rapidly developed since 2005; however, international action remains limited. This chapter explains the complex scientific background of OA to non-scientists. OA is measured on a logarithmic pH scale, with oceans becoming 40 per cent more acidic since pre-industrial times. Three groups of compounds contribute to acidification: CO2 (the primary driver), nitrogen oxides (NOx), and sulphur oxides (SOx). These substances enter the oceans through various means, such as anthropogenic emissions, geoengineering, coastal activities, and scrubber effluents from ships. Additional ocean stressors, such as climate change, pollution, and overfishing, compound the effects of OA, making adaptation more challenging. OA threatens calcifying organisms such as corals and oysters, disrupts food webs, and impacts human ecosystem services valued at potentially $1 trillion annually by 2100. Adaptation options include blue carbon ecosystems, marine protected areas, and fisheries management. The issue encompasses ocean, atmosphere, and land systems across multiple timescales and spatial levels, necessitating diverse governance approaches that address both global CO2 emissions and local stressors.

The introduction justifies telling the story of the forgotten bully Louis Bieral. His life was extraordinary not only because of his interactions with famous people, but also because of his wide range of adventures. Moreover, his brutal career helps us understand the importance of private, nonlethal violence to the operation of nineteenth-century America.

The introduction outlines the key themes of the book and offers brief summaries of individual chapters. It offers a brief overview of Keats’s letters and a summary of their publication history, their reception, and their place in his public reputation. The chapter proposes that Keats’s letters can be considered as a body of work in its own right, and that literary criticism needs to develop an epistolary poetics to enable and support a formal critical reading of his correspondence.