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Energy Efficiency of a Solar Green Building Using Bio-Sourced Materials for Indoor Temperature and Humidity Optimization

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Energy Engineering 2025年第1期122卷 41-62页

作者： SoumiaMounir Youssef Maaloufa Abdelhamid Khabbazi ElinaMohd Husini Nurul SyalaAbdul Latip YakubuAminuDodo Rime ELHarrouni MinaAmazal Asma Souidi malika Atigui Ahmed Aharoune National School of Architecture Agadir New Complex Ibn ZohrAgadirBP 20732Morocco EMDD CERNE2DUniversity of Mohammed V in RabatEst SaleSaleBP 227Morocco Thermodynamics and Energetics Laboratory Faculty of ScienceIbn Zohr UniversityAgadirBP 8106Morocco Faculty of Built Environment University Sains Islam MalaysiaNilaiBP 71800Malaysia Architectural Engineering Department Najran UniversityNajranBP 1988Saudi Arabia The Centre of Scientific and Engineering Research Najran UniversityNajranBP 1988Saudi Arabia Euro-Mediterranean School of Architecture Design and UrbanismEuro-Mediterranean University of FezFezBP 51Morocco

A clean environment with low carbon emissions is the goal of research on the development of green and sustainable buildings that use bio-sourced materials in conjunction with solar energy to create more sustainable *** is particularly true in Africa,where there aren’t many studies on the *** current study suggests a 90 m^(2) model of a sustainable building in a dry climate that is movable to address the issue of housing in remote areas,ensures comfort in harsh weather conditions,uses solar renewable resources—which are plentiful in Africa—uses biosourced materials,and examines how these materials relate to temperature and humidity control while emitting minimal carbon *** order to solve the topic under consideration,the work is split into two sections:numerical and experimental *** TRNSYS and Revit,the suggested prototype building is examined numerically to examine the impact of orientation,envelope composition made of bio-sourced materials,and carbon *** a hygrothermal investigation,experiments are conducted to evaluate this prototype’s ***,an examination of the photovoltaic system’s production,consumption,and several scenarios used tomaximize battery life is included in the *** the biosourcedmaterial achieves a thermal transmittance of 0.15(W.m^(-2).K^(-1)),the results demonstrate an intriguing finding in terms of *** value satisfies the requirements of passive building,energy autonomy of the dwelling,and injection in-network with an annual value of 15,757 ***,compared to the literature,the heating needs ratio is 6.38(kWh/m^(2).an)and the cooling needs ratio is 49(kWh/m^(2).an),both of which are good *** to international norms,the inside temperature doesn’t go above 26℃,and the humidity level is within a comfortable range.

关键词： Bio-sourced materials energy sustainability green architecture built environment

Optimization of continuous electrocoagulation-adsorption combined process for the treatment of a textile effluent

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Chinese Journal of Chemical Engineering 2022年第4期35卷 310-320页

作者： Kamel Hendaoui malika Trabelsi-Ayadi Fadhila Ayari Laboratory of Applications of Chemistry to Natural Resources and Substances and the Environment(LACReSNE) University of CarthageFaculty of Sciences of BizerteZarzouna 7021Tunisia

The aims of this study is to design and optimize the functioning of a full continuous combined process based on electrocoagulaion-adsorption on crude Tunisian clay to treat a real textile *** clay characterization shows that the used clay is a rich-smectite *** response surface methodology(RSM)technique based on Box-Behnken design(BBD)was used to optimize the *** optimum conditions which are initial pH solution of 8.24,effluent flow rate of 0.5 L·min^(-1),voltage of 70 V,and added suspension of clay flow rate of 100 ml·min^(-1) the achieved color,chemical oxygen demand(COD)and total suspended solid(TSS)removal efficiencies were respectively 96.87%,89.77%and 84.46%with0.75 USD·m^(-3) as total *** additional laboratory experiments at optimum conditions agree with the predicted results,which confirm the accuracy and the capability of RSM to predict results in the defined *** the designed process could be a good eco-friendly alternative to treat and reuse wastewater in industrial process with reasonable cost.

关键词： Combined process Textile effluent Electrocoagulation Adsorption Decontamination efficiencies Response surface methodology

Optimization and mechanisms analysis of indigo dye removal using continuous electrocoagulation

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Chinese Journal of Chemical Engineering 2021年第1期34卷 242-252页

Electrocoagulation(EC) is among the most effective techniques that remove color and decontaminate *** are delivered in situ by anode *** this research,indigo dye removal using iron electrodes in continuous electrocoagulation process and the responsible species for decolorization were *** Response Surface Methodology(RSM) was used to optimize the process *** finding in this study shows that at fixed conductivity at 15,000 μS·cm^(-1) the neutral conditions(pH from 6 to 8),the low absorbance,the low flow rate and the high voltage level enhance the color removal *** high R~2 value of 97.8% and ANOVA analyses show a good correlation between the experimental and predicted *** the optimum conditions,which are pH of 7.5, solution concentration of 60 mg·L^(-1), inlet flow rate of 2 L·min^(-1) and voltage of 47 V, the predicted decolorization of 94.083% was achieved at 93.972% with a total cost of 0.0927 USD·m^(-3) of treated *** the optimum pH(7.5),the zeta potential value(-4 mV) of the effluent during EC match with the one of iron Ⅲ *** dye removal is ensured thanks to physical adsorption and *** results exposed in this work prove that the continuous electrocoagulation process could be successfully used for indigo dye removal at industrial scale.

关键词： Continuous electrocoagulation Adsorption Parameter estimation Response surface methodology Optimization Zeta potential

Integrating Tabu Search in Particle Swarm Optimization for the Frequency Assignment Problem

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China Communications 2016年第3期13卷 137-155页

作者： Houssem Eddine Hadji malika Babes Department of Computer Science Badji Mokhtar-Annaba University

In this paper, we address one of the issues in the frequency assignment problem for cellular mobile networks in which we intend to minimize the interference levels when assigning frequencies from a limited frequency spectrum. In order to satisfy the increasing demand in such cellular mobile networks, we use a hybrid approach consisting of a Particle Swarm Optimization(PSO) combined with a Tabu Search(TS) algorithm. This approach takes both advantages of PSO efficiency in global optimization and TS in avoiding the premature convergence that would lead PSO to stagnate in a local minimum. Moreover, we propose a new efficient, simple, and inexpensive model for storing and evaluating solution's assignment. The purpose of this model reduces the solution's storage volume as well as the computations required to evaluate thesesolutions in comparison with the classical model. Our simulation results on the most known benchmarking instances prove the effectiveness of our proposed algorithm in comparison with previous related works in terms of convergence rate, the number of iterations, the solution storage volume and the running time required to converge to the optimal solution.

关键词： frequency assignment problem particle swarm optimization tabu search convergence acceleration

Distributed fuzzy fault-tolerant consensus of leader-follower multi-agent systems with mismatched uncertainties

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Journal of Systems Engineering and Electronics 2021年第5期32卷 1031-1040页

作者： malika Sader WANG Fuyong LIU Zhongxin CHEN Zengqiang College of Artificial Intelligence Nankai UniversityTianjin 300350China Tianjin Key Laboratory of Intelligent Robotics Nankai UniversityTianjin 300350China

In this paper,the distributed fuzzy fault-tolerant tracking consensus problem of leader-follower multi-agent systems(MASs)is *** objective system includes actuator faults,mismatched parameter uncertainties,nonlinear functions,and exogenous disturbances under switching communication *** solve this problem,a distributed fuzzy fault-tolerant controller is proposed for each follower by adaptive mechanisms to track the state of the ***,the fuzzy logic system is utilized to approximate the unknown nonlinear *** error estimator is introduced between the mismatched parameter matrix and the input ***,a selective adaptive law with relative state information is adopted and *** calculating the Lyapunov function’s derivative,the coupling terms related to consensus error and mismatched parameter uncertainties can be ***,a numerical simulation is given to validate the effectiveness of the proposed protocol.

关键词： distributed fuzzy fault-tolerant control(FTC) tracking consensus problem leader-follower multi-agent system mismatched parameter uncertainty

High Efficiency Crypto-Watermarking System Based on Clifford-Multiwavelet for 3D Meshes Security

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Computers, Materials & Continua 2022年第11期73卷 4329-4347页

作者： Wajdi Elhamzi malika Jallouli Yassine Bouteraa Department of Computer Engineering College of Computer Engineering and SciencesPrince Sattam bin Abdulaziz UniversityAl-Kharj11942Saudi Arabia Department of Computer Engineering and Sciences Higher School of Sciences and Technology of Hammam SousseUniversity of SousseSousse4011Tunisia LATIS Laboratory of Advanced Technology and Intelligent Systems University of SousseSousse4023Tunisie Control and Energy Management Laboratory(CEM Lab.) Ecole Nationale d Ingenieurs de Sfax(ENIS)Institut Superieur de Biotechnologie de Sfax(ISBS)University of SfaxSfax3038Tunisia

Since 3D mesh security has become intellectual property,3D watermarking algorithms have continued to appear to secure 3D meshes shared by remote users and saved in distant multimedia *** novelty of our approach is that it uses a new Clifford-multiwavelet transform to insert copyright data in a multiresolution domain,allowing us to greatly expand the size of the *** that,our method does two rounds of insertion,each applying a different type of Clifford-wavelet *** being placed into the Clifford-multiwavelet coefficients,the watermark,which is a mixture of the mesh description,source mesh signature(produced using SHA512),and a logo encrypted using the RSA(Ronald Shamir Adleman)technique,is encoded using *** the Least Significant Bit method steps,data embedding involves modulation and insertion ***,the watermarked mesh is reconstructed using the inverse Cliffordmultiwavelet *** to the utilization of a hybrid insertion domain,our technique has demonstrated a very high insertion rate while retaining mesh *** mesh is watermarked,and the extracted data is acquired in *** approach is also resistant to the most common types of *** findings reveal that the current approach improves on previous efforts.

关键词： Digital watermarking Clifford-multiwavelet transform Multiwavelet entropy LSB method RSA algorithm RSA algorithm Turbocode 3D multiresolution meshes

Measuring node decentralisation in blockchain peer to peer networks

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Blockchain(Research and Applications) 2023年第1期4卷 10-20页

作者： Andrew Howell Takfarinas Saber malika Bendechache Blockdaemon Los AngelesCaliforniaCAUSA Lero—The Irish Software Research Centre LimerickV94 NYD3Ireland School of Computer Science National University of Ireland GalwayGalwayH91 TK33Ireland ADAPT—Science Foundation Ireland Research Centre Dublin 2Ireland

New blockchain platforms are launching at a high cadence,each fighting for attention,adoption,and infrastructure *** studies have measured the peer-to-peer(P2P)network decentralisation of Bitcoin and Ethereum(i.e.,two of the largest used platforms).However,with the increasing demand for blockchain infrastructure,it is important to study node decentralisation across multiple blockchain networks,especially those containing a small number of *** this paper,we propose NodeMaps,a data processing framework to capture,analyse,and visualise data from several popular P2P blockchain platforms,such as Cosmos,Stellar,Bitcoin,and Lightning *** compare and contrast the geographic distribution,the hosting provider diversity,and the software client variance in each of these *** our comparative analysis of node data,we found that Bitcoin and its Lightning Network Layer 2 protocol are widely decentralised P2P blockchain platforms,with the largest geographical reach and a high proportion of nodes operating on The Onion Router(TOR)privacy-focused *** and Stellar blockchains have reduced node participation,with nodes predominantly operating in large cloud providers or well-known data centres.

关键词： Blockchain Peer-to-Peer Decentralisation Networks Bitcoin Lightning Network Cosmos Stellar The Onion Router(TOR)

A DDPG-based solution for optimal consensus of continuous-time linear multi-agent systems

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Science China(Technological Sciences) 2023年第8期66卷 2441-2453页

作者： LI Ye LIU ZhongXin LAN Ge SADER malika CHEN ZengQiang College of Artificial Intelligence Nankai UniversityTianjin 300350China Tianjin Key Laboratory of Intelligent Robotics Nankai UniversityTianjin 300350China College of Software Nankai UniversityTianjin 300350China

Modeling a system in engineering applications is a time-consuming and labor-intensive task,as system parameters may change with temperature,component aging,*** this paper,a novel data-driven model-free optimal controller based on deep deterministic policy gradient(DDPG)is proposed to address the problem of continuous-time leader-following multi-agent *** deal with the problem of the dimensional explosion of state space and action space,two different types of neural nets are utilized to fit them instead of the time-consuming state iteration *** minimal energy consumption,the proposed controller achieves consensus only based on the consensus error and does not require any initial admissible ***,the controller is self-learning,which means it can achieve optimal control by learning in real time as the system parameters ***,the proofs of convergence and stability,as well as some simulation experiments,are provided to verify the algorithm’s effectiveness.

关键词： leader-following consensus optimal control reinforcement learning deep deterministic policy gradient(DDPG)

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Influence of Xyloglucan Molar Mass on Rheological Properties of Cellulose Nanocrystal/Xyloglucan Hydrogels

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Journal of Renewable Materials 2019年第12期7卷 1381-1390页

作者： malika Talantikite Antoine Gourlay Sophie Le Gall Bernard Cathala UR1268 Biopolymères Interactions Assemblages INRA44316NantesFrance

Plant components are an inexhaustible source for the construction of bio-based *** we report,for the first time,the elaboration of biobased cellulose nanocrystals(CNC)/xyloglucan(XG)*** is a hemicellulose displaying a great affinity for cellulose surface and can be thus irreversibly adsorbed on *** of the hydrogels were investigated by varying the molar mass of XG either by enzymatic treatment with Endo-glucanase(EG2)or physical fractionation by ultrasound(US).Fractions were characterised by high-performance size exclusion chromatography(HPSEC)and their monosacchari decompositions were *** fractions with high,average and small molar mass,(800,300 and 100103 g/mol respectively),were selected in order to tune the properties of the ***-gel transition conditions were determined for each fraction by achieving phase diagram using the inverted tube *** properties,assessed by rheology,are improved by increasing XG molar mass since elastic modulus is higher for hydrogels formed with higher molar mass fractions as well as the strain at *** formation is likely due to the adsorption of XG fractions on CNC which increases the effective hydrodynamic volume of CNC leading to steric stabilization and interactions between loops and tails of XG adsorbed.

关键词： Cellulose nanocrystals xyloglucan fractions rheology hydrogels