scholarly journals Parameters governing the response of under-deck cable-stayed bridges

2007 ◽  
Vol 34 (8) ◽  
pp. 1016-1024 ◽  
Author(s):  
A M Ruiz-Teran ◽  
A C Aparicio
Keyword(s):  
Design Criteria ◽  
Live Load ◽  
Quarter Century ◽  
The Past ◽  
Highly Efficient ◽  
Cable Stayed Bridges

In the past quarter century, a number of bridges have been built that do not fit into the conventional types of cable-stayed bridges. These are under-deck cable-stayed bridges and combined cable-stayed bridges. In this paper we define the first of these two types and set out its mechanisms of response. We then establish and analyze the parameters that determine the permanent response and the response to live load of these bridges. Lastly, we draw conclusions relating to their behaviour and define design criteria for them with the aim of making cable-staying systems highly efficient and allowing the design of much lighter and slimmer structures.Key words: unconventional cable-stayed bridges, under-deck cable-stayed bridges, combined cable-stayed bridges.

scholarly journals Structural behaviour and design criteria of under-deck cable-stayed bridges and combined cable-stayed bridges. Part 2: Multispan bridges.

2008 ◽  
Vol 35 (9) ◽  
pp. 951-962 ◽  
Author(s):  
A. M. Ruiz-Teran ◽  
A. C. Aparicio
Keyword(s):  
Prestressed Concrete ◽  
Design Criteria ◽  
Live Load ◽  
Structural Behaviour ◽  
Structural Efficiency ◽  
Stay Cables ◽  
Medium Length ◽  
Permanent Load ◽  
Materials Used ◽  
Cable Stayed Bridges

This paper deals with the application of under-deck cable-staying systems and combined cable-staying systems to prestressed concrete road bridges with multiple spans of medium length. Schemes using under-deck cable-staying systems are not suitable for continuous bridges, as they are not efficient under traffic live load and only allow for the compensation of permanent load. However, combined cable-staying systems are very efficient for continuous bridges and enable the design of very slender decks (1/100th of span) where the amount of materials used is halved in comparison with conventional schemes without stay cables. In this paper, the substantial advantages provided by combined cable-staying systems for continuous bridges (such as high structural efficiency, varied construction possibilities, both economic and aesthetical benefits, and landscape integration) are set out. Finally, design criteria are included.

The Information Content of Royalty Income

2004 ◽  
Vol 18 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Feng Gu ◽  
Baruch Lev
Keyword(s):  
Information Content ◽  
Intangible Assets ◽  
High Tech ◽  
Patent Licensing ◽  
Financial Reports ◽  
Quarter Century ◽  
Steep Increase ◽  
The Past ◽  
Corporate Growth

The rise of intangible assets in size and contribution to corporate growth over the past quarter century was accompanied by a steep increase in the rate and scope of patenting. Consequently, many patent-rich companies, particularly in the science-based and high-tech industries, are extensively engaged in the licensing and sale of patents. We examine various valuation and disclosure aspects of the outcome of patent licensing—royalty income. Our findings indicate the following: (1) royalty income is highly relevant to securities valuation, (2) the intensity of royalty income provides investors with an important signal about the quality and prospects of firms' R&D expenditures, and (3) a substantial number of companies engaged in patent licensing do not disclose royalty income in financial reports.

Arab Historical Writing

2018 ◽  
Author(s):  
Youssef M. Choueiri
Keyword(s):  
Western Europe ◽  
Arab World ◽  
Colonial History ◽  
Historical Writing ◽  
Quarter Century ◽  
The Past ◽  
Historical Writings ◽  
Arabic World

This chapter traces the principal historiographical developments in the Arab world since 1945. It is divided into two major parts. The first part deals with the period extending from 1945 to 1970. During this period the discourse of either socialism or nationalism permeated most historical writings. The second part presents the various attempts made to decolonize, rewrite, or theorize history throughout the Arab world. The chapter then shows how in the various states of the Arabic world—some but not all of which have become fundamentalist Islamic regimes—Western models continued to be followed, though often with a more explicitly socialist approach than would be the case in America or Western Europe. By the 1970s, well before the shake-up of radical Islamicization that has dominated the past quarter-century, the entire Arabic world began to push hard against the dominance of residual Western colonial history.

scholarly journals Unprecedented Coordination-Induced Bright Red Emission from Group 12 Metal-Bound Triarylazoimidazoles

Molecules ◽  
2021 ◽  
Vol 26 (6) ◽  
pp. 1739
Author(s):  
Artyom A. Astafiev ◽  
Olga V. Repina ◽  
Boris S. Tupertsev ◽  
Alexey A. Nazarov ◽  
Maria R. Gonchar ◽  
...  
Keyword(s):  
Visible Light ◽  
Metal Complexes ◽  
Scientific Literature ◽  
Photo Luminescence ◽  
Red Emission ◽  
The Past ◽  
Highly Efficient ◽  
Luminescence Emission ◽  
New Family ◽  
Group 12

Arylazoimidazoles are important dyes which were intensively studied in the past. In contrast, triarylazoimidazoles (derivatives which carry aryl substituents at the imidazole core) received almost no attention in the scientific literature. Here, we report a new family of simple and easily accessible triarylazoimidazole-group 12 metal complexes, which feature highly efficient photo-luminescence emission (Φ up to  0.44). Novel compounds exhibit bright red emission in solution, which could be excited with a visible light.

American Institutional Studies: Present Knowledge and Past Trends

1971 ◽  
Vol 31 (1) ◽  
pp. 87-105 ◽  
Author(s):  
James H. Soltow
Keyword(s):  
Economic Theory ◽  
Economic History ◽  
Present Knowledge ◽  
Quarter Century ◽  
The Past

The production of economic history, like that in many fields of scholarly endeavor, increased sharply in the past quarter-century, compared to the rate of output in earlier eras. While the “new” economic history, with its emphasis on economic theory and measurement, has attracted considerable attention during the last decade, “traditional” economic history, written along institutional lines, has continued to be significant, both quantitatively (in terms of numbers of books and articles) and qualitatively (as assessed by contributions to our understanding of economic processes.)

Perspectives on the active volcanoes of China

2021 ◽  
pp. SP510-2021-87
Author(s):  
Jiandong Xu ◽  
Clive Oppenheimer ◽  
James O. S. Hammond ◽  
Haiquan Wei
Keyword(s):  
Hainan Island ◽  
Special Volume ◽  
Quarter Century ◽  
The Past ◽  
Special Publication ◽  
Current State ◽  
International Collaborations ◽  
Comprehensive Survey ◽  
Natural Laboratory ◽  
Active Volcanoes

AbstractChina ishas a rich record of Holocene volcanism that is relatively little known outside the country. It is encountered in home to a number of volcanoes that have erupted in the Holocene. These range from large stratovolcanoes in the northeast, linked to subduction of the pPacific plate (e.g., Changbaishan); in , more diffuse volcanismsmaller volcanoes on the edges of the TibetTibetan margin, linked toassociated with the collision of India and AEurasia (e.g., Tengchong, Ashishan), and more isolated regions of volcanismcentres possibly linked topossibly resulting from mantle upwelling (e.g., volcanoes in Hainan island). This makes China a natural laboratory for studyingstudies of intraplate volcanism, yet the study of volcanology in China is young, with a significant increase in research only over the last 25 yearsand significant progress in understanding its nature and origins has been made over the past quarter century. To highlight recent advances and the current state of knowledge, thisHere, we introduce the first publication in English to provide a comprehensive survey of the state of knowledge and research highlights. special volume presents the first compilation of research on the active volcanoes of China in English. This first paper introduces the book, which coversAccordingly, we provide an overview of the dynamics, geology, geochemistry, volcanic histories and geophysical studies of the 14 volcanoesvolcanic areas that have erupted in theassociated with Holocene documented thus far. Our hope is that this special publication acts as The special publication represents a benchmark reference on the topic but, as importantly, we hope it will stimulatea resource to allow new, international collaborations to be developed to help understandaimed at deepening our understanding of the origins, history, hazards and associated risks from future eruptions of China's volcanoes.

The cascade catalysis of the porphyrinic zirconium metal-organic framework PCN-224-Cu for CO2 conversion to alcohols

2021 ◽  
Author(s):  
Shi-Chao Qi ◽  
Zhi-Hui Yang ◽  
Rong-Rong Zhu ◽  
Xiao-Jie Lu ◽  
Ding-Ming Xue ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Co2 Conversion ◽  
Cascade System ◽  
The Past ◽  
Highly Efficient ◽  
Metal Organic ◽  
Zirconium Metal ◽  
Organic Framework ◽  
Cascade Catalysis

Reproducing the highly efficient catalytic cascade system to mimic life behaviors in vitro has been intensively investigated over the past few decades. However, except the biocatalysis with enzymes, most chemocatalytic...

Ascesa e declino dell'editoria psicoanalitica americana

2009 ◽  
pp. 9-46
Author(s):  
Paul E. Stepansky
Keyword(s):  
World War Ii ◽  
Book Publishing ◽  
The United States ◽  
Erik Erikson ◽  
World War ◽  
Erich Fromm ◽  
Quarter Century ◽  
The Past ◽  
Karen Horney ◽  
Internal Fragmentation

- The rise and fall of psychoanalytic book publishing in America is one sign of the progressive marginalization of psychoanalysis within American mental health care. The "glory era" of psychoanalytic book publishing, roughly the quarter century following the end of World War II, is described. This was the era when psychoanalyst-authors such as Karl Menninger, Erich Fromm, Erik Erikson, and Karen Horney published books of great commercial success. Cumulative sales data of noteworthy psychoanalytic books published in the United States over the past 70 years are reported, and document the continuous decline in sales since the 1970s. In accounting for the recent acceleration of this decline, Stepansky focuses on the internal fragmentation of a once cohesive profession into rival schools with sectarian features, each committed to a self-limited reading agenda. Stepansky discusses these issues from his vantage point as Managing Director of The Analytic Press from 1984-2006. [KEY WORDS: American psychoanalysis, publishing, books, fractionation, marginalization]

Sign in / Sign up

Export Citation Format

Share Document