Two-dimensional dynamic walking stability of elderly females with a history of falls

2021 ◽  
Author(s):  
Xing GAO ◽  
Fei SHEN ◽  
Li WANG ◽  
Yingnan MA ◽  
Haijun NIU ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Dynamic Walking ◽  
History Of

scholarly journals How Should We Categorize Approaches to the History of Political Thought?

2020 ◽  
Vol 83 (1) ◽  
pp. 91-114
Author(s):  
Adrian Blau
Keyword(s):  
Theoretical Analysis ◽  
Political Theory ◽  
Political Thought ◽  
Two Dimensional ◽  
History Of Political Thought ◽  
One Dimensional ◽  
History Of ◽  
New Framework

AbstractThis paper proposes a new framework for categorizing approaches to the history of political thought. Previous categorizations exclude much research; political theory, if included, is often caricatured. And previous categorizations are one-dimensional, presenting different approaches as alternatives. My framework is two-dimensional, distinguishing six kinds of end (two empirical, four theoretical) and six kinds of means. Importantly, these choices are not alternatives: studies may have more than one end and typically use several means. Studies with different ends often use some of the same means. And all studies straddle the supposed empirical/theoretical “divide.” Quentin Skinner himself expertly combines empirical and theoretical analysis—yet the latter is often overlooked, not least because of Skinner's own methodological pronouncements. This highlights a curious disjuncture in methodological writings, between what they say we do, and what we should do. What we should do is much broader than existing categorizations imply.

Loving Ebola-chan: Internet memes in an epidemic

2016 ◽  
Vol 39 (3) ◽  
pp. 341-356 ◽  
Author(s):  
Olivia Rose Marcus ◽  
Merrill Singer
Keyword(s):  
Infectious Disease ◽  
Digital Age ◽  
Structural Approach ◽  
The Internet ◽  
Social Response ◽  
Coping Mechanism ◽  
Two Dimensional ◽  
Fear Response ◽  
Cultural Artifact ◽  
History Of

In this article, the authors provide a layered analysis of Ebola-chan, a visual cultural artifact of the 2014–2015 Ebola outbreak. Rather than considering her as a two-dimensional anime character (i.e. as a simple iconic coping mechanism and/or a fear response), this recent Internet meme is analyzed using an integrated semiotic and structural approach that involves discussion of the genesis of disaster humor in light of the changing world of the Internet, the history of anthropomorphism of disease, and the biosocial nature of an infectious disease epidemic. Our analysis is designed to advance both the anthropology of the Internet and the anthropology of infectious disease. As a multi-vocal symbol with different meanings for different audiences, Ebola-chan represents a social response to a lethal epidemic in the digital age.

A passive dynamic walking model with Coulomb friction at the hip joint

Robotica ◽  
2013 ◽  
Vol 31 (8) ◽  
pp. 1221-1227 ◽  
Author(s):  
Wenhao Guo ◽  
Tianshu Wang ◽  
Qi Wang
Keyword(s):  
Hip Joint ◽  
Coulomb Friction ◽  
Basins Of Attraction ◽  
Swing Phase ◽  
Dynamic Equations ◽  
Two Dimensional ◽  
Dynamic Walking ◽  
Passive Dynamic Walking ◽  
Impact Phase ◽  
The Impact

SUMMARYThis paper presents a modified passive dynamic walking model with hip friction. We add Coulomb friction to the hip joint of a two-dimensional straight-legged passive dynamic walker. The walking map is divided into two parts – the swing phase and the impact phase. Coulomb friction and impact make the model's dynamic equations nonlinear and non-smooth, and a numerical algorithm is given to deal with this model. We study the effects of hip friction on gait and obtain basins of attraction of different coefficients of friction.

Chronic cardiac tamponade in a cat caused by an intrapericardial biliary cyst

2010 ◽  
Vol 12 (4) ◽  
pp. 338-340 ◽  
Author(s):  
Sarah M. Scruggs ◽  
Janice M. Bright
Keyword(s):  
Cardiac Tamponade ◽  
Clinical Signs ◽  
Exercise Intolerance ◽  
Two Dimensional ◽  
Percutaneous Aspiration ◽  
Biliary Cyst ◽  
Progressive Exercise ◽  
History Of ◽  
Dimensional Echocardiography ◽  
Two Dimensional Echocardiography

A 1-year-old domestic longhair cat presented to our hospital with a 4-month history of progressive exercise intolerance and coughing. Two-dimensional echocardiography confirmed the presence of an intrapericardial cyst and cardiac tamponade. Tamponade was relieved via percutaneous aspiration of the cyst. The cyst was surgically excised 4 days later, and histopathology was consistent with a biliary cyst. The cat's clinical signs completely resolved following surgery.

Three Eighteenth-Century Attempts to Map the Natural Order: Johann Herrmann – Georg Christoph Würtz – Paul Dietrich Giseke

2019 ◽  
Vol 24 (1) ◽  
pp. 33-89 ◽  
Author(s):  
Kees van Putten
Keyword(s):  
Eighteenth Century ◽  
Natural History ◽  
Natural Order ◽  
Two Dimensional ◽  
History Of ◽  
A Chain

Abstract By the second half of the eighteenth century, the age-old concept of nature as a chain of being had been superseded by the idea that the order of nature was a two-dimensional whole. Carolus Linnaeus, for instance, stated that vegetal nature was ordered like a geographical map. Paul Dietrich Giseke, one of his followers, rendered this metaphor concrete by making a “genealogic-geographical map of the natural orders of plants.” Could mapping nature in this way help to produce a true image of it and thereby achieve a better understanding of nature’s order? I intend to answer this question by analyzing Giseke’s map along with two closely connected images of the order of nature, Johann Herrmann’s “Table of affinities between animals” and the hitherto unnoticed “geographical map” of medicines, designed by Georg Christoph Würtz. The article deals with the relation between these images, examines the respective advantages and drawbacks of their maps and situates them with respect to the models of the natural history of the time.

Enhanced dissipation for quasi-geostrophic motion over small-scale topography

2000 ◽  
Vol 407 ◽  
pp. 105-122 ◽  
Author(s):  
JACQUES VANNESTE
Keyword(s):  
Large Scale ◽  
Spatial Scales ◽  
Additional Term ◽  
Equation Of Motion ◽  
Small Scale ◽  
Two Dimensional ◽  
Turbulent Dissipation ◽  
Dissipative Term ◽  
History Of ◽  
Large Scale Flow

The effect of a small-scale topography on large-scale, small-amplitude oceanic motion is analysed using a two-dimensional quasi-geostrophic model that includes free-surface and β effects, Ekman friction and viscous (or turbulent) dissipation. The topography is two-dimensional and periodic; its slope is assumed to be much larger than the ratio of the ocean depth to the Earth's radius. An averaged equation of motion is derived for flows with spatial scales that are much larger than the scale of the topography and either (i) much larger than or (ii) comparable to the radius of deformation. Compared to the standard quasi-geostrophic equation, this averaged equation contains an additional dissipative term that results from the interaction between topography and dissipation. In case (i) this term simply represents an additional Ekman friction, whereas in case (ii) it is given by an integral over the history of the large-scale flow. The properties of the additional term are studied in detail. For case (i) in particular, numerical calculations are employed to analyse the dependence of the additional Ekman friction on the structure of the topography and on the strength of the original dissipation mechanisms.

scholarly journals CCD Time-Series Photometry of Astronomical Sources

1995 ◽  
Vol 167 ◽  
pp. 167-172
Author(s):  
Steve B. Howell
Keyword(s):  
Time Series ◽  
Photometric Data ◽  
Two Dimensional ◽  
Future Directions ◽  
Recent Developments ◽  
History Of

CCDs are essentially the only instrument available today for photometry at most observatories; they are also becoming more readily available to amateurs as well. Thus, obtaining good photometric data with these two-dimensional devices is something we all need to understand. The history of and recent developments in CCD time-series photometry will be reviewed with some comments on future directions.

The evolution of the discourse of a Belgian fair trade organization: a two-dimensional history

2016 ◽  
Vol 12 (1) ◽  
pp. 61-77 ◽  
Author(s):  
Robbe Geysmans
Keyword(s):  
Social Movement ◽  
Fair Trade ◽  
Design Methodology ◽  
Central Position ◽  
Societal Change ◽  
Two Dimensional ◽  
Mutual Relationship ◽  
Content Type ◽  
History Of ◽  
Insight Into

Purpose This paper aims to provide a detailed account of the evolution of the fair trade discourse of a Belgian fair trade organization, with a specific focus on the changes in the combination of the organization’s trade and social (movement) dimensions. Design/methodology/approach This study is based on an analysis of the organization’s discourse as found in the member magazine at four periods. These four periods cover different phases in the life history of the organization and in the broader fair trade field. Findings Throughout the organization’s history, both social (movement) and trade dimensions know drastic changes, also in their mutual relationship. In the earliest history, trade practices are clearly subordinate to goals of a socialist-inspired societal change, while in the more recent history, trade has permeated the entire discourse, putting the trade dimension in a more central position. However, both dimensions seem to evolve in a connected way, as the discourse shows clear similarities on both, and evolutions can be related to changes in the organization’s broader field. Originality/value Focusing on the discourse of a specific fair trade organization breaks with a tradition of broad notions of a fair trade history. Moreover, this case provides insight into the evolution of the mix of both social and economic dimensions within a specific organization, and connects this to evolutions in the broader (fair trade) field.

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