Design of a Frontal Rail Structure With Thickness Variation That Performs Under Axial and Oblique Loading

Author(s):  
Saied Q. Nusier ◽  
Jamel E. Belwafa ◽  
Ridha Baccouche ◽  
Hikmat F. Mahmood ◽  
Bahig Fileta

Progressive crushing of the frontal part of the frame in any collision (frontal, offset and oblique) is one of the factors that determine the safety level that a car or a truck can provide to the occupant. A new approach in frontal rail design will be covered in this paper. The rail thickness will vary along the length of the rail in such away that the compressive strength of a rear section on the compression side of the rail will be greater than or equal to the section in front of it. This design will enable the front rail to collapse in a progressive manner such that the collapse will be transmitted from the front to the rear. Preventing early global bending in the rail will enhance the efficiency of energy absorbed during a crash. Starting with the section with the lowest compressive strength (most forward section of the rail), in a controlled way, the section strength is designed to increase with length. This will help meet the federal regulations such as FMVSS 208 by collapsing the least strong front sections at lower speeds and the strong rear sections at higher speeds. Also, collapsing of the weak frontal sections in a crash can help in compatibility between different vehicles on the road.

2021 ◽  
Vol 297 ◽  
pp. 01019
Author(s):  
Abdeslam Houari ◽  
Tomader Mazri

6G of mobile networks plays a crucial role in improving the capacity and enhancing the quality of services of Vehicle-to-Everything (V2X) based networks evolving in an intelligent environment. VANET is a promising project in the intelligent transportation field using V2X communications. The emergence of several 5G and 6G technologies has raised several challenges for scientists and researchers to allow vehicles and road users to enjoy several services while ensuring their safety on the road. Among these technologies, the unmanned aerial vehicle (UAV), which can perform different tasks for road users and vehicle drivers such as data caching, packet relaying and processing. In this article, we present a new approach based on 6G Unmanned Aerial Vehicles (UAV) technology on a vehicular cloud architecture while exploiting the exchange support of information-centric networking (ICN) for the improvement of network capacity.


2020 ◽  
pp. 153-183
Author(s):  
Hugh M. Thomas

This chapter studies royal residences, reactions to various landscapes, and ceremonial practices that formed part of royal itineration. King John and his court travelled constantly, meaning that court life was not centred on a small number of palaces but on multiple castles, palaces, and other residences. Until recently, work on medieval royal residences focused largely on castles and their military functions, but now scholars are studying domestic aspects, including in castles, and the designed landscapes that surrounded castles and palaces. This chapter applies the new approach to John’s reign. In particular, it studies attitudes towards landscapes, both designed landscapes and the less heavily manipulated environments in which the court hunted. Because of the king’s travels, the court spent much time on the road, and the chapter also studies certain associated ceremonies, such as processions to greet the king and formal entries into important towns, also known as the adventus.


2012 ◽  
Vol 626 ◽  
pp. 391-395 ◽  
Author(s):  
Rosyid Kholilur Rohman ◽  
Setiyo Daru Cahyono ◽  
A.R. Hanung Triyono

The rapid economy growth in Indonesia encourages the developments in all fields. One of them is the development of infrastructure on housings, transportations, and irrigation. Constructions of concrete building are used on the road, bridges, buildings, housing, and water buildings. A concrete is a material structure of building that made from mix of sand, gravel, cement and water as adhesive. All the materials of the concrete were derived from the nature. To avoid the excessive exploration of nature resource the method of recycling of used concrete to become new one were needed. The used concrete was used for coarse aggregate. To improve the quality of concrete from the used one, additional material was required, that is, fly ash. The test material were formed of cube of 15x15x15 cm in size. From the result of research, the analysis can be done in order to find the relationship between quantity of fly ash to be added and the quality of concrete can be formulated as y =-34.921x2 + 11.45x + 25.465, in which y is compressive strength and x is the percentage of fly ash. Thus, for maximum addition of fly ash of 16.4 %, it obtains the maximum compressive strength of concrete of 26.4 MPa and the age of concrete is 28 days. The method of recycling of used concrete and the use of fly ash to become the material of new concrete are safe environmentally, which can overcome the nature filthy especially from the waste of used concrete and coal. Therefore, this is in line with the principal of nature preservation, those are Reduce, Reuse dan Recycle.


2014 ◽  
Vol 13 (1) ◽  
pp. 339-347
Author(s):  
Vitalii Naumov ◽  
Natalia Vnukova ◽  
Ganna Zhelnovach

The analysis of problems and of approaches for ensuring the environmental safety of roads in Ukraine has been performed. The proposed mathematical model on the basis of neural networks allows numerical evaluation of quality of road area in the conditions of incomplete and fuzzy information. The proposed approach allows the determination of roads’ environmental safety level, the indica­tion of necessity for arrangement of environmental monitoring stations, and allows the development of a number of activities for environmental protection on the road sections as well.


Part of roads in Merauke Regency are damaged because of the soil supporting power is soft and not enough to get advantages if it is used as sub-grade soil. One of the ways to handle it is to carry out the mechanic as well as mechanic stability by using additional material. This research intends to know the California Bearing Ratio (CBR) value of subgrade, to know the effect of lime content due to the CBR of clay, the CBR value of sub-grade after being added with lime content, and to know the unconfined compressive strength value of sub-grade and soil after being mixed with lime. .The methodology consists of experimental method by using the mix of clay on the road of Kuda Mati-Tanah Wali-Wali, Merauke Regency with the lime from Wakatobi Regency due to the lime percentage variety of 3%, 6%, 9%, and 12%. Then, it is carried out the test of Atterberg limits, density, CBR swelling, CBR soaked, and test of unconfined compressive strength. The test is due to the lime percentage variety as above and the results of unconfined compressive strength value are 2,024 kg/cm2 ; 5,434 kg/cm2 ; 6,458 kg/cm2 ; 7,689 kg/cm2 ; and 7,019 kg/cm2 . Results show that the sub-grade on the road of Kuda Mati-Tujuh Wali-Wali is as clay. Lime can change the soil characteristic better and it can increase the CBR of clay soil and increasing the value of soil unconfined compressive strength


2021 ◽  
Vol 234 ◽  
pp. 00065
Author(s):  
Abdelkarim Guaadaoui ◽  
Meryem ElYadini ◽  
Khalid Chiat ◽  
Tarik Jdaini ◽  
Souad El Hajjaji

Over the past two decades, Morocco has been able to develop a political and strategic vision which has gradually considered the environment as a prerequisite for any public policies. The new approach aims to make the environment the cornerstone of sustainable development, and therefore, ultimately, of the birth of a new "green and inclusive" economy. This vision benefits from an exceptional impetus from His Majesty the King Mohammed VI. Morocco has therefore put in place a national environmental and sustainable development policy which breaks down into several priority areas, namely: strengthening the legal and institutional framework; environmental upgrading through programs dedicated to the preservation of the environment and providing financial instruments and systems in the service of environmental monitoring. In addition, Morocco, with its strategic north-south status, is actively engaged in the environmental diplomacy and multilateral cooperation. On the road to an integrated and sustainable human development, Morocco continues to deploy ambitious efforts in environmental communication, awareness and education. Based on the bidimensional classic model, Morocco has therefore developed a tridimensional/pyramidal model for the sustainable development. This, by integrating governance in the summit, and putting human being at the center of the new form, as an actor and a beneficiary at the same time. This manuscript presents an overview of the Moroccan model in all aspects of preserving the environment and establishing the second generation of the sustainable development.


Author(s):  
Andreas Fickers ◽  
Andy 'O Dwyer ◽  
Alexandre Germain

This video documents the authors' journey back to the origins of transnational television in Europe. Inspired by the idea of experimental media archaeology (EMA), the trip to original locations of the transnational media event known as ‘Paris-week’ in 1952 illustrates a new approach to media historiography, which aims to sensitize television historians for the material remains, topography and physical spaces of early television transmissions. Readers /viewers are invited to watch the different episodes of the authors' journey by clicking on the figures.


ASHA Leader ◽  
2006 ◽  
Vol 11 (5) ◽  
pp. 14-17 ◽  
Author(s):  
Shelly S. Chabon ◽  
Ruth E. Cain

2009 ◽  
Vol 43 (9) ◽  
pp. 18-19
Author(s):  
MICHAEL S. JELLINEK
Keyword(s):  
The Road ◽  

PsycCRITIQUES ◽  
2013 ◽  
Vol 58 (31) ◽  
Author(s):  
David Manier
Keyword(s):  
The Road ◽  

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