Application of Surface-Wave Methods for Seismic Site Characterization
Sebastiano Foti, Stefano Parolai, Dario Albarello and Matteo Picozzi
Thanks in advance
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tomorrow (20-March-2012 = 01-Farvardin-1391) on time 08:44:27 (+3:30 GMT) new Persian year will be stared, and many Persian people around the words (about 300,000,000) celebrates these days and coming spring.
Nowrūz (Persian: نوروز, IPA: [nouˈɾuːz], meaning "[The] New Day") is the name of the Iranian New Year in Iranian calendars and the corresponding traditional celebrations. Nowruz is also widely referred to as the "Persian New Year".
Nowruz is celebrated and observed by Iranian peoples and the related cultural continent and has spread in many other parts of the world, including parts of Central Asia, Caucasus, South Asia, Northwestern China, the Crimea and some groups in the Balkans.
Nowruz marks the first day of spring and the beginning of the year in Iranian calendar. It is celebrated on the day of the astronomical vernal equinox, which usually occurs on March 21 or the previous/following day depending on where it is observed. As well as being a Zoroastrian holiday and having significance amongst the Zoroastrian ancestors of modern Iranians, the same time is celebrated in parts of the South Asian sub-continent as the new year. The moment the Sun crosses the celestial equator and equalizes night and day is calculated exactly every year and Iranian families gather together to observe the rituals.
Originally being a Zoroastrian festival, and the holiest of them all, Nowruz is believed to have been invented by Zoroaster himself, although there is no clear date of origin. Since the Achaemenid era the official year has begun with the New Day when the Sun leaves the zodiac of Pisces and enters the zodiacal sign of Aries, signifying the Spring Equinox.
The Jewish festival of Purim is probably adopted from the Persian New Year. It is also a holy day for Sufis, Ismailis, Alawites, Alevis, and adherents of the Bahá'í Faith.
The term Nowruz in writing, first appeared in Persian records in the 2nd century AD, but it was also an important day during the time of the Achaemenids c. 548–330 BC), where kings from different nations under the Persian empire used to bring gifts to the Emperor, also called King of Kings (Shahanshah), of Persia on Nowruz. The significance of Nowruz in the Achaemenid empire was such that the great Persian king Cambyses II's appointment as the king of Babylon was legitimized only after his participation in the New Year festival (Nowruz).
The UN's General Assembly in 2010 recognized the International Day of Nowruz, describing it a spring festival of Persian origin which has been celebrated for over 3,000 years. During the meeting of The Inter-governmental Committee for the Safeguarding of the Intangible Heritage of the United Nations, held between 28 September – 2 October 2009 in Abu Dhabi, Nowrūz was officially registered on the UNESCO List of the Intangible Cultural Heritage of Humanity.
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I strongly recommended you to read about nowruz in wikipedia:
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Recent years have seen enormous advances in the technology of concrete as a material, through which its strength, compactness and ductility can reach levels never dreamed of before. Thanks to these improved material properties, the strength and durability of concrete structures is greatly improved, their weight and dimensions reduced, the scope of concrete as a structural material is widened and – despite the higher material costs – overall economy is possible, with positive impacts on sustainability as well. Similar advances are underway in reinforcing materials, notably high strength steel and fibre-reinforced polymers, and in the way they are combined with concrete into high performance structures. Developments in materials and equipment, as well as new concepts, have lead to innovative construction techniques, reducing cost and construction time and making possible the application of concrete under extreme conditions of construction or environment. All these advances will be highlighted in the book by the top experts in the field of concrete structures, namely those currently active in the field’s leading and truly international scientific and technical association: the International Federation of Structural Concrete (fib)
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. Audience: Practicing engineers and firms, academics, researchers and graduate students, will all find the book timely, informative and very interesting.
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This course takes a tour through many algorithms of numerical analysis, sampling a variety of techniques suitable across many applications. We aim to assess alternative methods based on both accuracy and efficiency, to discern well-posed problems from ill-posed ones, and to see these methods in action through computer implementation.
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The objects of this book are to set forth the essential nature of concrete, to describe briefly the materials of which it is composed, the manner in which these materials are proportioned and mixed, the methods adopted in practice for the application of the product ; to state as clearly and concisely as possible the fundamental principles of reinforced concrete, and to illustrate by references to typical examples of construction the remarkable characteristics of that happy union of concrete and steel.
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The book consists of 24 chapters illustrating a wide range of areas where MATLAB tools are applied. These areas include mathematics, physics, chemistry and chemical engineering, mechanical engineering, biological (molecular biology) and medical sciences, communication and control systems, digital signal, image and video processing, system modeling and simulation.
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Could someone kindly provide this paper:
Title: "Development of analysis and design procedures for spread footings"
Authors: Mylonakis, George; Gazetas, George; Nikolaou, Sissy; Chauncey, Andre
MCEER-02-0003, Buffalo, N.Y. : Multidisciplinary Center for Earthquake Engineering Research, Technical report, 1520-295x;, 2002, PDF (22 MB) (500 N24 02-03)
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Soil-structure interaction can affect the response of buildings with subterranean levels by modifying the characteristics of input motions relative to those in the free-field and through the added system compliance associated with relative foundation/free-field translation and rocking. While procedures are available to account for these effects, they are seldom utilized in engineering practice.
Two approximations commonly used in practice are shown to provide poor results: (1) fixing the structure at ground line with input consisting of free-field translation and (2) modeling subterranean soil layers using a series of horizontal springs which are fixed at their far ends and subjected to free-field ground accelerations.
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Here two examples for design of two way slab using the direct design method
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