RC arch bridges – lessons from the past and future developments

Author(s):  
Jure Radic ◽  
Jelena Bleiziffer ◽  
Igor Gukov ◽  
Damir Tkalcic
2009 ◽  
Vol 5 (1) ◽  
pp. 32
Author(s):  
Melanie Maytin ◽  
Laurence M Epstein ◽  
◽  

Prior to the introduction of successful intravascular countertraction techniques, options for lead extraction were limited and dedicated tools were non-existent. The significant morbidity and mortality associated with these early extraction techniques limited their application to life-threatening situations such as infection and sepsis. The past 30 years have witnessed significant advances in lead extraction technology, resulting in safer and more efficacious techniques and tools. This evolution occurred out of necessity, similar to the pressure of natural selection weeding out the ineffective and highly morbid techniques while fostering the development of safe, successful and more simple methods. Future developments in lead extraction are likely to focus on new tools that will allow us to provide comprehensive device management and the design of new leads conceived to facilitate future extraction. With the development of these new methods and novel tools, the technique of lead extraction will continue to require operators that are well versed in several methods of extraction. Garnering new skills while remembering the lessons of the past will enable extraction technologies to advance without repeating previous mistakes.


2012 ◽  
Vol 1 (2) ◽  
pp. 282-300 ◽  
Author(s):  
Cécile Mathou ◽  
Jin Yan

Abstract The objective of this study was to provide comprehensive information about student and academic staff mobility between the European Union (EU) and China as well as the main strategies and policies in place to promote mobility. Based on quantitative and qualitative data provided by national authorities and various stakeholders consulted throughout the research process, the study aimed at taking stock of the situation and identifying trends regarding EU-China learning mobility over the past ten years. It also aimed at drawing recommendations to improve current and future mobility actions between the two regions.


2021 ◽  
Vol 15 (3) ◽  
pp. 361-377
Author(s):  
Ewa Domańska ◽  
Paul Vickers

Abstract In this article I demonstrate that the ideas outlined in Jerzy Topolski’s Methodology of History (Polish 1968, English translation 1976) could not only offer a reference point for and indeed enrich ongoing debates in the philosophy of history, but also help to set directions for future developments in the field. To support my argument, I focus on two themes addressed in Topolski’s work: 1) the understanding of the methodology of history as a separate discipline and its role both in defending the autonomy of history and in creating an integrated knowledge of the past, which I read here through the lens of the current merging of the humanities and natural sciences; and 2) the role of a Marxist anthropocentrism based on the notion of humans as the creators of history, which I consider here in the context of the ongoing critique of anthropocentrism. I point to the value of continuing to use concepts drawn from Marxist vocabulary, such as alienation, emancipation, exploitation and overdetermination, for interpreting the current state of the world and humanity. I stress that Marxist anthropocentrism, with its support for individual and collective agency, remains crucial to the creation of emancipatory theories and visions of the future, even if it has faced criticism for its Eurocentrism and might seem rather familiar and predictable when viewed in the context of the contemporary humanities. Nevertheless, new manifestations of Marxist theory, in the form of posthumanist Marxism and an interspecies historical materialism that transcends anthropocentrism, might play an important role in redefining the humanities and humanity, including its functions and tasks within human and multispecies communities.


Author(s):  
David R. Brunsdon

Significant developments have occurred in the field of lifelines engineering over the past decade both in New Zealand and internationally. In New Zealand, this period encompassed both the beginnings of lifelines engineering and its development into being an established discipline of earthquake engineering. This paper charts the progress of lifelines engineering during this time, outlines the key achievements and critical success factors and discusses current needs and future developments.


Perception ◽  
1997 ◽  
Vol 26 (11) ◽  
pp. 1341-1352 ◽  
Author(s):  
Lothar Spillmann

This overview takes the reader from the classical contrast and assimilation studies of the past to today's colour research, in a broad sense, with its renewed emphasis on the phenomenological qualities of visual perception. It shows how the shift in paradigm from local to global effects in single-unit recordings prompted a reappraisal of appearance in visual experiments, not just in colour, but in the perception of motion, texture, and depth as well. Gestalt ideas placed in the context of modern concepts are shown to inspire psychophysicists, neurophysiologists, and computational vision scientists alike. Feedforward, horizontal interactions, and feedback are discussed as potential neuronal mechanisms to account for phenomena such as uniform surfaces, filling-in, and grouping arising from processes beyond the classical receptive field. A look forward towards future developments in the field of figure–ground segregation (Gestalt formation) concludes the article.


Author(s):  
John G. McNutt ◽  
Lauri Goldkind

The use of sophisticated technology to promote social change has developed over the past three decades from tentative beginnings to an expected part of the arsenal of movement organizations and advocacy groups. The development of practical politics throughout the world has made greater use of ever more sophisticated technologies. This article will discuss the nature of e-activism, the development of electronic social change activities, the organizational and practice issues, the research base and the potential future developments in the field.


1981 ◽  
Vol 71 ◽  
pp. 50-62 ◽  
Author(s):  
Emilio Gabba

Like all works of literature, works of history end up sooner or later with a readership quite different from that envisaged or hoped for by their authors. A subtle and polemical work such asThe Gallic Warof Caesar has become a standard text for teaching Latin in the early years of secondary education, as have the tender and sophisticated elegies of Tibullus and Propertius. In Italy, the unpopularity of ‘The Betrothed’ by A. Manzoni, a finely ironical and difficult but rewarding novel, is the result of the distaste or boredom experienced by children forced to read it at school.A similar fate has dogged Thucydides. As T. P. Wiseman has recently emphasized, Thucydides and Polybius, precisely because their historical method is close to our own, are regarded as the paradigms against which to judge ancient historical writing—quite wrongly. In fact they are untypical and exceptional; and one has moreover to ask to what extent they were even properly understood in antiquity. In a famous chapter near the beginning of his work (1. 22. 4), Thucydides proudly distances it from that of Herodotus, though without naming him: his own history is not designed for passing appreciation, but is to be of permanent value. Because human nature is always the same, a critical record of past events will present analogies and resemblances when compared with future developments. Knowledge of the past is thus useful, because it improves ones judgment and understanding and even suggests how to behave in situations in which one may find oneself.


2011 ◽  
Vol 11 (2) ◽  
pp. 391-415 ◽  
Author(s):  
Dawn Knight

This paper takes stock of the current state-of-the-art in multimodal corpus linguistics, and proposes some projections of future developments in this field. It provides a critical overview of key multimodal corpora that have been constructed over the past decade and presents a wish-list of future technological and methodological advancements that may help to increase the availability, utility and functionality of such corpora for linguistic research.


Solar Energy ◽  
2006 ◽  
Author(s):  
Anand U. Khanzode ◽  
Sachin R. Karale

Solar Air Drying is one of the oldest method of food preservation. For several thousand years people have been preserving grapes, herbs, Potato’s, corn, milk, fruits, vegetables, spices, meat and fish by drying. Until canning was developed at the end of the 18th century, drying was virtually the only method of food preservation. It is still the most widely used method. Solar Drying is an excellent way to preserve food and solar food dryers are an appropriate food preservation technology for a sustainable world. This technology makes it possible to dehydrate and preserve food professionally without compromising on quality, color, texture, enzymes, vitamins, taste and nutritional values of foods in the process. Food scientists have found that by reducing the moisture content of food to between 10 and 20%, bacteria, yeast, mold and enzymes are all prevented from spoiling it. India is blessed with an abundance of sunlight, water and biomass. Vigorous efforts during the past two decades are now bearing fruit as people in all walks of life are more aware of the benefits of renewable energy, especially solar energy in villages and in urban or semi-urban centers of India. Industries that can benefit from application of solar energy to heat air are Food, Textiles, Dairies, Pharma and Chemical. This paper reviews the present scenario of Solar Air Dryer and strategies for future developments in India.


Author(s):  
A.T. Lawal ◽  
H.S. Bolarinwa ◽  
L.O. Animasahun ◽  
M.D. Adeoye ◽  
I.O. Abdulsalami ◽  
...  

The use of carbon nanotubes (CNT) for fabrication of sensors and biosensors has increased considerably over the past decade. This review covers the progress and advances made during the years (2014-2018) in the utilisation of carbon nanotubes for fabrication of electrochemical biosensors. The focus of the review is on reported CNT-based biosensors for detection of, important substances, such as glucose, H2O2, (DNA), ascorbic acid, uric acid, dopamine, metal ions, and pesticides. The review starts by first discussing the structures and properties of CNTs, followed by discussion of some of the synthetic methods for CNTs preparation. The working principles and performances of CNT-based biosensors are then discussed. Considerations for future developments in CNT-based biosensors are also outlined.


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