Active Turbulence

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Ricard Alert ◽  
Jaume Casademunt ◽  
Jean-François Joanny
Keyword(s):  
Momentum Conservation ◽  
Annual Review ◽  
Publication Date ◽  
Future Directions ◽  
Chaotic Flows ◽  
Nematic Order ◽  
Self Organized ◽  
Energy Cascades ◽  
Active Turbulence ◽  
Intrinsic Length

Active fluids exhibit spontaneous flows with complex spatiotemporal structure, which have been observed in bacterial suspensions, sperm cells, cytoskeletal suspensions, self-propelled colloids, and cell tissues. Despite occurring in the absence of inertia, chaotic active flows are reminiscent of inertial turbulence, and hence they are known as active turbulence. Here, we survey the field, providing a unified perspective over different classes of active turbulence. To this end, we divide our review in sections for systems with either polar or nematic order, and with or without momentum conservation (wet or dry). Comparing to inertial turbulence, we highlight the emergence of power-law scaling with either universal or nonuniversal exponents. We also contrast scenarios for the transition from steady to chaotic flows, and we discuss the absence of energy cascades. We link this feature to both the existence of intrinsic length scales and the self-organized nature of energy injection in active turbulence, which are fundamental differences with inertial turbulence. We close by outlining the emerging picture, remaining challenges, and future directions. Expected final online publication date for the Annual Review of Condensed Matter Physics, Volume 13 is March 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

Social Epidemiology: Past, Present, and Future

2022 ◽  
Vol 43 (1) ◽  
Author(s):  
Ana V. Diez Roux
Keyword(s):  
Social Epidemiology ◽  
Policy Implications ◽  
Annual Review ◽  
Publication Date ◽  
Social Production ◽  
Systemic Racism ◽  
Future Directions ◽  
The Social ◽  
Critical Approaches ◽  
Social Causes

In a context where epidemiologic research has been heavily influenced by a biomedical and individualistic approach, the naming of “social epidemiology” allowed explicit emphasis on the social production of disease as a powerful explanatory paradigm and as critically important for interventions to improve population health. This review briefly highlights key substantive areas of focus in social epidemiology over the past 30 years, reflects on major advances and insights, and identifies challenges and possible future directions. Future opportunities for social epidemiology include grounding research in theoretically based and systemic conceptual models of the fundamental social drivers of health; implementing a scientifically rigorous yet realistic approach to drawing conclusions about social causes; using complementary methods to generate valid explanations and identify effective actions; leveraging the power of harmonization, replication, and big data; extending interdisciplinarity and diversity; advancing emerging critical approaches to understanding the health impacts of systemic racism and its policy implications; going global; and embracing a broad approach to generating socially useful research. Expected final online publication date for the Annual Review of Public Health, Volume 43 is April 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

Shear Pleasure: The Structure, Formation, and Thermodynamics of Crystallographic Shear Phases

2021 ◽  
Vol 51 (1) ◽  
Author(s):  
Albert A. Voskanyan ◽  
Alexandra Navrotsky
Keyword(s):  
Materials Science ◽  
Defect Formation ◽  
Shear Plane ◽  
Annual Review ◽  
Publication Date ◽  
Future Directions ◽  
Extended Defect ◽  
Shear Structures ◽  
Crystallographic Shear ◽  
Exciting Area

A renaissance of interest in crystallographic shear structures and our recent work in this remarkable class of materials inspired this review. We first summarize the geometrical aspects of shear plane formation and possible transformations in ReO3, rutile, and perovskite-based structures. Then we provide a mechanistic overview of crystallographic shear formation, plane ordering, and propagation. Next we describe the energetics of planar defect formation and interaction, equilibria between point and extended defect structures, and thermodynamic stability of shear compounds. Finally, we emphasize the remaining challenges and propose future directions in this exciting area. Expected final online publication date for the Annual Review of Materials Science, Volume 51 is July 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

The Molecular Basis for Life in Extreme Environments

2021 ◽  
Vol 50 (1) ◽  
Author(s):  
Nozomi Ando ◽  
Blanca Barquera ◽  
Douglas H. Bartlett ◽  
Eric Boyd ◽  
Audrey A. Burnim ◽  
...  
Keyword(s):  
Molecular Basis ◽  
Structural Changes ◽  
Extreme Environments ◽  
Annual Review ◽  
Publication Date ◽  
Extreme Conditions ◽  
Future Directions ◽  
Environmental Genomics ◽  
Life On Earth ◽  
Diversity Of Life

Sampling and genomic efforts over the past decade have revealed an enormous quantity and diversity of life in Earth's extreme environments. This new knowledge of life on Earth poses the challenge of understanding its molecular basis in such inhospitable conditions, given that such conditions lead to loss of structural changes and of function in biomolecules from mesophiles. In this review, we discuss the physicochemical properties of extreme environments. We present the state of recent progress in extreme environmental genomics. We then present an overview of our current understanding of the biomolecular adaptation to extreme conditions. As our current and future understanding of biomolecular structure–function relationships in extremophiles requires methodologies adapted to extremes of pressure, temperature, and chemical composition, advances in instrumentation for probing biophysical properties under extreme conditions are presented. Finally, we briefly discuss possible future directions in extreme biophysics. Expected final online publication date for the Annual Review of Biophysics, Volume 50 is May 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

Personality Psychology

2021 ◽  
Vol 73 (1) ◽  
Author(s):  
Brent W. Roberts ◽  
Hee J. Yoon
Keyword(s):  
Individual Differences ◽  
Organizational Structure ◽  
Online Publication ◽  
Annual Review ◽  
Publication Date ◽  
Future Directions ◽  
Personality Psychology ◽  
Units Of Analysis ◽  
And Behaviors ◽  
Over Time

Personality psychology, which seeks to study individual differences in thoughts, feelings, and behaviors that persist over time and place, has experienced a renaissance in the last few decades. It has also not been reviewed as a field in the Annual Review of Psychology since 2001. In this article, we seek to provide an update as well as a meta-organizational structure to the field. In particular, personality psychology has a prescribed set of four responsibilities that it implicitly or explicitly tackles as a field: ( a) describing what personality is—i.e., what the units of analysis in the field are; ( b) documenting how it develops; ( c) explaining the processes of personality and why they affect functioning; and ( d) providing a framework for understanding individuals and explaining their actions, feelings, and motivations. We review progress made over the last 20 years to address these four agendas and conclude by highlighting future directions and ongoing challenges to the field. Expected final online publication date for the Annual Review of Psychology, Volume 73 is January 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

Achievement Motivation: What We Know and Where We Are Going

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Allan Wigfield ◽  
Katherine Muenks ◽  
Jacquelynne S. Eccles
Keyword(s):  
Achievement Motivation ◽  
Extrinsic Motivation ◽  
Developmental Psychology ◽  
Empirical Work ◽  
Theory Development ◽  
Annual Review ◽  
Publication Date ◽  
Future Directions ◽  
Competence Beliefs ◽  
The Status

We review work on the development of children's and adolescents’ achievement motivation, focusing on recent advances in the empirical work in the field and commenting on the status of current theories prominent in the literature. We first focus on the main theories guiding the field and the development of motivational beliefs, values, and goals; intrinsic and extrinsic motivation; identity and motivation; and motivation and emotion. We provide our views on future directions for theory development and what we believe are the critical next steps in developmental research. We then discuss the burgeoning intervention work designed to enhance different aspects of children's motivation: their competence beliefs and mindsets, intrinsic motivation, valuing of achievement, and growth mindsets. We also provide suggestions for next steps in this area in order to guide the field forward. We close with a brief consideration of neuroscience approaches to motivation. Expected final online publication date for the Annual Review of Developmental Psychology, Volume 3 is December 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

From Theoretical Work to Clinical Translation: Progress in Concentric Tube Robots

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Zisos Mitros ◽  
S.M. Hadi Sadati ◽  
Ross Henry ◽  
Lyndon Da Cruz ◽  
Christos Bergeles
Keyword(s):  
Autonomous Systems ◽  
Theoretical Work ◽  
Clinical Applications ◽  
Annual Review ◽  
Publication Date ◽  
Continuum Robots ◽  
Future Directions ◽  
Elastic Tubes ◽  
Concentric Tube Robots

Continuum robots can traverse anatomical pathways to intervene in regions deep inside the human body. They are able to steer along 3D curves in confined spaces and dexterously handle tissues. Concentric tube robots (CTRs) are continuum robots that comprise a series of precurved elastic tubes that can be translated and rotated with respect to each other to control the shape of the robot and tip pose. CTRs are a rapidly maturing technology that has seen extensive research over the past decade. Today, they are being evaluated as tools for a variety of surgical applications, as they can offer precision and manipulability in tight workspaces. This review provides an exhaustive classification of research on CTRs based on their clinical applications and highlights approaches for modeling, control, design, and sensing. Competing approaches are critically presented, leading to a discussion of future directions to address the limitations of current research and its translation to clinical applications. Expected final online publication date for the Annual Review of Control, Robotics, and Autonomous Systems, Volume 5 is May 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

Emotion and Politics: Noncognitive Psychological Biases in Public Opinion

2022 ◽  
Vol 25 (1) ◽  
Author(s):  
Steven W. Webster ◽  
Bethany Albertson
Keyword(s):  
Public Opinion ◽  
Political Behavior ◽  
Democratic Governance ◽  
Annual Review ◽  
Publication Date ◽  
Future Directions ◽  
Partisan Polarization ◽  
Contemporary Politics ◽  
And Gender ◽  
The Relationship

Contemporary politics is noteworthy for its emotional character. Emotions shape and, in turn, are elicited by partisan polarization, public opinion, and political attitudes. In this article, we outline recent work in the field of emotion and politics with an emphasis on the relationship between emotion and polarization, issue attitudes, information processing, and views on democratic governance. We also highlight a growing body of scholarship that examines the racial and gender differences in emotion's ability to affect political behavior. We conclude with a discussion of unaddressed questions and suggestions for future directions for scholars working in this area of growing importance. Expected final online publication date for the Annual Review of Political Science, Volume 25 is May 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

When Gender Matters in Organizational Negotiations

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Hannah Riley Bowles ◽  
Bobbi Thomason ◽  
Inmaculada Macias-Alonso
Keyword(s):  
Organizational Behavior ◽  
Gender Effects ◽  
Annual Review ◽  
Publication Date ◽  
Organizational Leaders ◽  
Future Directions ◽  
Situational Characteristics ◽  
Systematic Effects ◽  
Gender Based ◽  
Practical Implications

A person's gender is not a reliable predictor of their negotiation behavior or outcomes, because the degree and character of gender dynamics in negotiation vary across situations. Systematic effects of gender on negotiation are best predicted by situational characteristics that cue gendered behavior or increase reliance on gendered standards for agreement. In this review, we illuminate two levers that heighten or constrain the potential for gender effects in organizational negotiations: ( a) the salience and relevance of gender within the negotiating context and ( b) the degree of ambiguity (i.e., lack of objective standards or information) with regard to what is negotiable, how to negotiate, or who the parties are as negotiators. In our summary, we review practical implications of this research for organizational leaders and individuals who are motivated to reduce gender-based inequities in negotiation outcomes. In conclusion, we suggest future directions for research on gender in organizational negotiations. Expected final online publication date for the Annual Review of Organizational Psychology and Organizational Behavior, Volume 9 is January 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

scholarly journals Ion Beam Nanopatterning of Biomaterial Surfaces

2021 ◽  
Vol 11 (14) ◽  
pp. 6575
Author(s):  
Yu Yang ◽  
Adrian Keller
Keyword(s):  
Material Properties ◽  
Ion Beam ◽  
The Self ◽  
Solid Surfaces ◽  
Beam Irradiation ◽  
Ion Beam Irradiation ◽  
Future Directions ◽  
Self Organized ◽  
Functional Surfaces ◽  
Biomaterial Surfaces

Ion beam irradiation of solid surfaces may result in the self-organized formation of well-defined topographic nanopatterns. Depending on the irradiation conditions and the material properties, isotropic or anisotropic patterns of differently shaped features may be obtained. Most intriguingly, the periodicities of these patterns can be adjusted in the range between less than twenty and several hundred nanometers, which covers the dimensions of many cellular and extracellular features. However, even though ion beam nanopatterning has been studied for several decades and is nowadays widely employed in the fabrication of functional surfaces, it has found its way into the biomaterials field only recently. This review provides a brief overview of the basics of ion beam nanopatterning, emphasizes aspects of particular relevance for biomaterials applications, and summarizes a number of recent studies that investigated the effects of such nanopatterned surfaces on the adsorption of biomolecules and the response of adhering cells. Finally, promising future directions and potential translational challenges are identified.

Endogenous Retroviruses Drive Resistance and Promotion of Exogenous Retroviral Homologs

2020 ◽  
Vol 9 (1) ◽  
Author(s):  
Elliott S. Chiu ◽  
Sue VandeWoude
Keyword(s):  
Immune Modulation ◽  
Viral Infections ◽  
Viral Evolution ◽  
Endogenous Retroviruses ◽  
Annual Review ◽  
Publication Date ◽  
Biological Functions ◽  
Self Tolerance ◽  
Vertebrate Hosts ◽  
Insight Into

Endogenous retroviruses (ERVs) serve as markers of ancient viral infections and provide invaluable insight into host and viral evolution. ERVs have been exapted to assist in performing basic biological functions, including placentation, immune modulation, and oncogenesis. A subset of ERVs share high nucleotide similarity to circulating horizontally transmitted exogenous retrovirus (XRV) progenitors. In these cases, ERV–XRV interactions have been documented and include ( a) recombination to result in ERV–XRV chimeras, ( b) ERV induction of immune self-tolerance to XRV antigens, ( c) ERV antigen interference with XRV receptor binding, and ( d) interactions resulting in both enhancement and restriction of XRV infections. Whereas the mechanisms governing recombination and immune self-tolerance have been partially determined, enhancement and restriction of XRV infection are virus specific and only partially understood. This review summarizes interactions between six unique ERV–XRV pairs, highlighting important ERV biological functions and potential evolutionary histories in vertebrate hosts. Expected final online publication date for the Annual Review of Animal Biosciences, Volume 9 is February 16, 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

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