<abstract xmlns="http://www.w3.org/1999/xhtml">In the context of the Algerian energy policy, and through the review of the Algiers’ residential building stock, this paper explores the correlation between the energy consumption of gas and electricity with urban density. Based on a holistic approach of the 57 Algiers’ municipalities, the analysis is organized in two ways. Firstly, the spatial approach is conducted within a GIS implementation, carried out based on the 2013 aggregated annual energy consumption data. The cross analysis of Electricity and Gas consumption and density of population within a GIS spatial distribution approach shows effectively a strong correlation between urban density and energy consumption with a Pearson correlation of −56% and −65% of the Electricity and Gas consumption in the urban municipalities, respectively. Also, the household located in the suburban municipalities consume clearly more energy than the urban centered ones. Based on the electricity and gas consumption, density and carbon footprint we have clustered, within a PCA, the Algiers’ municipalities into three profiles: the “thrifty”, the “intermediate” and the “wasteful” profile.</abstract>

Institute of Architecture and Urban Planning

Ecole Polytechnique d’Architecture et d’Urbanisme (EPAU)

Laboratoire Ville Urbanisme et Développement Durable (VUDD)

Exploring the Energy Implication of Urban Density in Residential Buildings

<abstract xmlns="http://www.w3.org/1999/xhtml">Understanding space-time correlation in equilibrium matrix when force of collision involving earthquake stress strain interaction. The proposed study shows that non-linear dynamics of earthquake behaviour simulated with ant colony optimization in short timescale deformation by analysis of the stiffness matrix and the stress strain interaction process of the rock pattern. An improved ant colony optimization combined with local search is proposed for solving this complex optimization problem of finding trigger zones for earthquake occurrences. The disturbances at trigger basins for any system cause the collapse of a subsystem leading to stress evolution and slip due to strain nucleation. The stress strain network based on redistribution of stress accumulation are discretized into four states of low stress and strain and a finite element model is established to identify vertices for the stress-strain component and edges for global coupling effects have been constructed for dynamic monitoring of stress and strain behaviour at triggering zones. In this paper, an efficient algorithm is developed for the formation of null basis of triangular and rectangular plate bending finite element models, corresponding to highly sparse flexibility matrices. Triggering basins serve as harbingers of large earthquake where stress-strain interactions have been analyzed by the quasi-static mechanics of seismic precursory stress-strain propagation in the crustal lithosphere. The simulation framework shows that with time, spatial triggering points as stress varies from one point to another to identify the external influences for the body forces and the surface forces for geodynamic frameworks.</abstract>

Erasmus Mundus Post Doctoral Fellow, Faculty of Management and Technological Engineering

Identification of Collision Mechanism at Seismogenic Fault Interface Using Finite Element Analysis Involving Plate Bending Applications Using Ant Colony Optimization

<abstract xmlns="http://www.w3.org/1999/xhtml">This paper outlines for construction specialists the concept of "passive house", presenting the actual status of research and breakthroughs within this field within the country and abroad but also the directives of the European Council and European Parliament regarding this concept. Last, but certainly not least, it showcases some of the flaws of the <bold>European Directive regarding passive houses</bold>, because it fails to bring forth viable solutions for a number of dire issues.</abstract>

Passive House

<abstract xmlns="http://www.w3.org/1999/xhtml">Surface roughness has an important role in retarding the runoff velocity. The increase in paving blocks usage, particularly in urban areas, can change the surface roughness of the land. This study investigated the effects of four types of concrete block pavements (CBPs) in retarding the surface runoff velocity. Three design parameters based on CBP properties that considerably influenced the flow retardation were promoted. They were opening ratio (Or), void ratio (Vr) and straight channel ratio (Sr). A tilted plot equipped with a rainfall simulator was used to investigate the influence of surface slope and rainfall intensity to the flow on various CBPs. A modified dye tracing method in view was performed to monitor the surface flow velocity under various rainfall intensities. Flow retardation coefficient (Frd) were calculated based on velocity data on smooth pavement and on CBPs layer measured under the same slope and rainfall intensity. The results showed that flow retardation coefficient increased with an increase in openings ratio, rainfall intensity and surface slope. The relationship between flow retardation coefficient and all design parameters was expressed by a linear regression function. A further study is required to increase the accuracy of the model by modifying the regression function and increasing the variation of design parameters.</abstract>

Effects of Concrete Block Pavement on Flow Retardation Factor

<abstract xmlns="http://www.w3.org/1999/xhtml">Objective of the present study is to define the dynamic mechanical response of multi-story structures acted upon by wind. Structural response is associated to the dynamically applied wind and is approached by considering its three components: static, kinematic and energy states. Proposed objective is achieved by structural dynamic analyses performed on multi-story steel structures in elastic domain. The dynamic model is the multi-degree of freedom system associated to lateral story level displacements. Dynamic forces are computed from recorded velocities of wind through a simple velocity – pressure – force transform. The matriceal differential equation of wind induced vibratory state is dealt with by both, direct integration and modal decomposition. The three components of the mechanical state are expressed via base shear force – the static state, lateral story-level displacements – the kinematic state and wind induced energy – the energy state. Modal decomposition of the dynamic response allows for immediate computation of modal contribution to the total wind response. Computed values of the parameters are numerically and graphically presented and commented. Relevant conclusions are inferred.</abstract>

Mechanical State of Multi-Story Structures Induced by Wind Action

AHEAD OF PRINT

Volume 14 (2024): Issue 1 (May 2024)

Volume 13 (2023): Issue 2 (December 2023)

Volume 13 (2023): Issue 1 (April 2023)

Volume 12 (2022): Issue 2 (December 2022)

Volume 12 (2022): Issue 1 (May 2022)

Volume 11 (2021): Issue 2 (December 2021)

Volume 11 (2021): Issue 1 (May 2021)

Volume 10 (2020): Issue 2 (December 2020)

Volume 10 (2020): Issue 1 (May 2020)

Volume 9 (2019): Issue 2 (December 2019)

Volume 9 (2019): Issue 1 (May 2019)

Volume 8 (2018): Issue 2 (December 2018)

Volume 8 (2018): Issue 1 (May 2018)

Volume 7 (2017): Issue 2 (December 2017)

Volume 7 (2017): Issue 1 (May 2017)

Volume 6 (2016): Issue 2 (December 2016)

Volume 6 (2016): Issue 1 (May 2016)

Volume 5 (2015): Issue 2 (December 2015)

Volume 5 (2015): Issue 1 (May 2015)

Journal of Applied Engineering Sciences

 Journal of Applied Engineering Sciences (JAES) is a peer-reviewed, electronic and printed journal that publishes original, high-quality research on topics broadly related to Civil Engineering and Geodesy. The journal focuses on theoretical and application papers with especial attention to young scientists.  Aims and Scope Journal of Applied Engineering Sciences (JAES) is a scientifical journal devoted to presentation and discussion of information on the ultimate issues in the civil, installations, geodesic, electrical and energetical engineering fields. The journal addresses news and various problems which such fields confronts both national and international level. JAES is designed for scientists, researchers (including doctoral students), engineers and managers, regardless of their discipline, who are involved in scientific, technical or other issues related in the journal domains. Emphasis is placed on integrated approaches. These approaches require both technical and nontechnical factors. Even the dissemination and application of innovative information is very important, the implementation of existing literature in the JAES related topics and the address's contributions also requires a clear understanding from as many other scientific areas as possible.This journal presents original research in:  1. Geodesy:   Surveying Engineering  Geodetic Networks  Deformation Analysis  Adjustment Theory and Mathematical Geodesy  Global Navigation Satellite Systems (GNSS)  Inertial Geodesy  Geoid determination and height systems  Marine Geodesy and Satellite Altimetry  Satellite Gravimetry  Geometric Geodesy  Numerical methods and software developments in Geodesy  Geodynamics  Geophysical Geodesy   2. Civil Engineering:   Construction Engineering  Environmental Engineering  Materials Engineering  Structural Engineering  Water and Sanitary Engineering  Transportation Engineering   Archiving  Sciendo archives the contents of this journal in Portico - digital long-term preservation service of scholarly books, journals and collections.  Plagiarism Policy  The editorial board is participating in a growing community of Similarity Check System's users in order to ensure that the content published is original and trustworthy. Similarity Check is a medium that allows for comprehensive manuscripts screening, aimed to eliminate plagiarism and provide a high standard and quality peer-review process. 