The Internal Dynamics of the Human Crystalline Lens with Accommodation

2001 ◽  
Author(s):  
Jane F. Koretz ◽  
Christopher A. Cook
Keyword(s):  
Crystalline Lens ◽  
Internal Dynamics

The Genesis and Internal Dynamics of El Salvador's People's Revolutionary Army, 1970–1976

2014 ◽  
Vol 38 (01) ◽  
pp. 102-129
Author(s):  
ALBERTO MARTÍN ÁLVAREZ ◽  
EUDALD CORTINA ORERO
Keyword(s):  
Latin America ◽  
El Salvador ◽  
Early Years ◽  
Left Wing ◽  
Internal Dynamics ◽  
Internal Coherence ◽  
The 1960S

AbstractUsing interviews with former militants and previously unpublished documents, this article traces the genesis and internal dynamics of the Ejército Revolucionario del Pueblo (People's Revolutionary Army, ERP) in El Salvador during the early years of its existence (1970–6). This period was marked by the inability of the ERP to maintain internal coherence or any consensus on revolutionary strategy, which led to a series of splits and internal fights over control of the organisation. The evidence marshalled in this case study sheds new light on the origins of the armed Salvadorean Left and thus contributes to a wider understanding of the processes of formation and internal dynamics of armed left-wing groups that emerged from the 1960s onwards in Latin America.

Direct Actions in the Czech Environmental Movement

2020 ◽  
Vol 53 (3) ◽  
pp. 137-156
Author(s):  
Arnošt Novák
Keyword(s):  
Czech Republic ◽  
Collective Action ◽  
Direct Action ◽  
Environmental Movement ◽  
Environmental Movements ◽  
Internal Dynamics ◽  
Historical Experience ◽  
Ideal Types ◽  
Environmental Milieu ◽  
Liberal Concept

Direct actions constitute an important repertoire of action for environmental movements in Western countries. This article differentiates two ideal types of this repertoire of action: the anarchist concept, which understands direct action in terms of values and as a preferred way of doing things; and the liberal concept, which uses direct action in an instrumental way. Based on my empirical research in post-socialist Czech Republic, the article focuses on debates over environmentalism and, to be more precise, on uses of direct actions by environmental organizations. It explains why the liberal concept was very limited and why direct action as a preferred way of doing things has not become a part of the repertoire of collective action. The article argues that the movement was politically moderate due to a combination of reasons: the very specific historical experience of the Czech environmental movement, which inclines it to use dialogue rather than confrontations with power; the fear of political hostility and marginalization by the state; and the internal dynamics of the environmental milieu.

Extrascleral Filling Using Endoillumination the First Experiencethe

2020 ◽  
pp. 43-49
Author(s):  
V.Y. Markevich ◽  
◽  
T.A. Imshenetskaya ◽  
O.A. Yarmak ◽  
◽  
...  
Keyword(s):  
Surgical Treatment ◽  
Retinal Detachment ◽  
Rhegmatogenous Retinal Detachment ◽  
Silicone Oil ◽  
Subretinal Fluid ◽  
Crystalline Lens ◽  
Vitreous Cavity ◽  
Macular Area ◽  
General Group ◽  
Anatomical Outcome

Purpose. To study the effectiveness of extrascleral filling (ESF) using endoillumination in the surgical treatment of patients with primary rhegmatogenous retinal detachment (RRD). Material and methods. The material for the study was the data of a comprehensive clinical examination and surgical treatment by ESF method using endoillumination in 17 patients (17 eyes) with RRD. In 7 cases (41%), the macular area was involved in the detachment process. In 5 cases (29.4%), local scleral filling was performed. In the remaining 12 cases (70.6%), the local ESF was supplemented with a circling silicone element. Surgical intervention was supplemented by transscleral drainage of subretinal fluid (SRF) in 10 cases (59%) and pneumatic retinopexy with SF6 gas 50% in 8 cases (48%). Results. In the general group of patients, best corrected visual acuity (BCVA) increased from 0.35 to 0.46. In the subgroup of patients with a detached macular area, the positive dynamics is more pronounced, BCVA increased from 0.1 to 0.28. The progression of proliferative vitreoretinopathy caused the recurrence of retinal detachment in two patients (11.8%). Recurrences were diagnosed after 3 and 5 months, respectively. In both cases, a vitrectomy with tamponade of the vitreous cavity with silicone oil 5000 Cst was performed. The percentage of successful anatomical outcome after the first operation in our study was 82%. The percentage of successful achievement of the final anatomical result was 94%. In two cases, additional injection of SF6 gas into the vitreous cavity was required. Conclusion. This type of surgical treatment is an effective method of surgical treatment of patients with RRD. In our study, the successful anatomical outcome after the first operation was recorded in 82% of patients, which correlates with the data of the authors who also used this method (83–92%). Surgeons who performed surgical treatment using this technique in our study note improved workplace ergonomics when visualizing the fundus using an operating microscope and endoillumination compared with indirect ophthalmoscopy. Other teams of authors came to this conclusion as well. In our study, there were no complications associated with the introduction of a light pipe into the vitreous cavity (iatrogenic crystalline lens injury, endophthalmitis), which indicates the safety of this type of surgical treatment.

MULTIMEDIA ENVIROMENT OF GERMAN POLEMIC DISCOURSE

2019 ◽  
pp. 223-235
Author(s):  
Anna Udelkina
Keyword(s):  
Information Exchange ◽  
The Internet ◽  
Internet Site ◽  
Internal Dynamics ◽  
Xxth Century ◽  
User Comments ◽  
Multimedia Environment ◽  
The Media ◽  
Use Of The Internet ◽  
Main Activity

This article is devoted to the study of the multimedia environment of the polemic discourse in German media with its diverse formats of impact on the audience and the actively developing internal dynamics of texts. If at the end of the XXth century the specifics of German media were the use of the Internet site as one of the possibilities to present copies of newspapers and magazines in electronic form, today we can speak of modified, hybrid Internet versions of printed publications that do not just create websites on the Internet that duplicate their main activity, but also combines the features of the traditional press and features of the functioning of texts on the Internet. The transition from linear, monomedia broadcasting platforms to discrete, multimedia ones has a significant impact on the process of creating, designing and placing modern polemics. Texts of articles and user comments are considered in the article as tmaterialization of the polemic discourse in the media. Polemic texts are formed on the basis of intertextual structures and have a hypertext nature. The use of multimedia tools (a variety of fonts, graphics, animation, photo, video and sound) in the text of the article allows the author not only to expand the amount of information provided, but also to qualitatively supplement its content through inline inclusions tn the text, to express the meaning of information by referring to verbal and non-verbal means; to provide a visual and figurative presentation of information (graphs, charts, tables), to attract attention and influence the audience, as well as to provide readers with the opportunity to participate in information exchange.

Unprecedented Relationships

2018 ◽  
Author(s):  
Rosanna Hertz ◽  
Margaret K. Nelson
Keyword(s):  
Social Norms ◽  
Research Methods ◽  
Family Size ◽  
Age Groups ◽  
Internal Dynamics ◽  
Sperm Donor

This chapter introduces the concept of networks of strangers linked by reliance on the same sperm donor. It draws on participants’ use of the language of genes and the language of choice to explain how these networks develop. Because the relationships within these networks are unprecedented, the members have to decide for themselves naming conventions and social norms. The introduction suggests the importance of these relationships at a time when family size is shrinking. It includes a discussion of research methods, describing how the authors located respondents and the characteristics of respondents (212 parents and 154 donor-conceived children). It also explains how the authors chose to feature particular networks that reflected different eras, different age groups of children, and different internal dynamics.

The Aristocracy in England and Tuscany, 1000 - 1250

2019 ◽  
Author(s):  
Peter Coss
Keyword(s):  
Time Frame ◽  
Grand Narrative ◽  
English History ◽  
Internal Dynamics ◽  
Italian Experience ◽  
English Society ◽  
History Of ◽  
External Stimuli ◽  
The Relationship ◽  
Interpretative Framework

Part I of this book is an in-depth examination of the characteristics of the Tuscan aristocracy across the first two and a half centuries of the second millennium, as studied by Italian historians and others working within the Italian tradition: their origins, interests, strategies for survival and exercise of power; the structure and the several levels of aristocracy and how these interrelated; the internal dynamics and perceptions that governed aristocratic life; and the relationship to non-aristocratic sectors of society. It will look at how aristocratic society changed across this period and how far changes were internally generated as opposed to responses from external stimuli. The relationship between the aristocracy and public authority will also be examined. Part II of the book deals with England. The aim here is not a comparative study but to bring insights drawn from Tuscan history and Tuscan historiography into play in understanding the evolution of English society from around the year 1000 to around 1250. This part of the book draws on the breadth of English historiography but is also guided by the Italian experience. The book challenges the interpretative framework within which much English history of this period tends to be written—that is to say the grand narrative which revolves around Magna Carta and English exceptionalism—and seeks to avoid dangers of teleology, of idealism, and of essentialism. By offering a study of the aristocracy across a wide time-frame and with themes drawn from Italian historiography, I hope to obviate these tendencies and to appreciate the aristocracy firmly within its own contexts.

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