ENP Engineering Science Journal最新文献_第4页

A New Robust Adaptive Algorithm for Second Order Blind Source Separation 一种新的二阶盲源分离鲁棒自适应算法

ENP Engineering Science Journal Pub Date : 2022-07-29 DOI: 10.53907/enpesj.v2i1.86

Z. Bekhtaoui, K. Abed-Meraim, A. Meche, Messaoud Thameri

引用次数: 0

Power Transformer Fault Prediction using Naive Bayes and Decision tree based on Dissolved Gas Analysis 基于溶解气体分析的朴素贝叶斯和决策树的电力变压器故障预测

ENP Engineering Science Journal Pub Date : 2022-07-29 DOI: 10.53907/enpesj.v2i1.63

Yassine Mahamdi, A. Boubakeur, A. Mekhaldi, Y. Benmahamed

引用次数: 2

Effect of Surface Preparation on Mechanical Properties of Anodized A6061 in Sulfuric Acid Bath 表面处理对硫酸浴阳极氧化A6061力学性能的影响

ENP Engineering Science Journal Pub Date : 2022-07-29 DOI: 10.53907/enpesj.v2i1.93

Amane. Sahli, O. Djema, M. Bouabdallah, D. Saidi

引用次数: 0

Task management in IoT-Fog-Cloud environment employing static scheduling Techniques 基于静态调度技术的物联网-雾云环境任务管理

ENP Engineering Science Journal Pub Date : 2022-07-29 DOI: 10.53907/enpesj.v2i1.76

Gauvav Goel, R. Tiwari

{"title":"Task management in IoT-Fog-Cloud environment employing static scheduling Techniques","authors":"Gauvav Goel, R. Tiwari","doi":"10.53907/enpesj.v2i1.76","DOIUrl":"https://doi.org/10.53907/enpesj.v2i1.76","url":null,"abstract":"In a distributed computing system, there are limited resources, which needs to be utilized effectively. Then for improving QoS Fog computing paradigm is an effective way, with suitable allocations. Thus, different resource scheduling and optimization algorithms exist. However, still, there is a scope to improve bandwidth, latency, energy consumption, and total communication cost in the Fog environment. In this work investigation is done to show significance of task management in such resource constrained environment. Various heuristics and meta-heuristic algorithms are evaluated using simulations, to show the task placement and their impacts by using 5 different Montage datasets from work flow sim tool kit for Fog-Computing environment. Then QoS parameters like cost, makespan, and energy consumptions are computed for various state-of-the-art techniques like Min-max, PSO, GA, ACO, and BLA. This shows the behaviour of these techniques with such different tasks and allocation environment configurations. Evaluated result parameters are collected and presented in the result section. This work shows the effectiveness of heuristics and meta-heuristics techniques to manage the tasks and their allocations in the Fog environment.","PeriodicalId":200690,"journal":{"name":"ENP Engineering Science Journal","volume":"131 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114615740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Phosphate Amendments for the Inhibition of Acid Mine Drainage Generated from Sidi Kamber Tailings Facility 磷酸盐改性剂对西迪坎伯尾矿厂酸性矿山废水的抑制作用

ENP Engineering Science Journal Pub Date : 2022-07-29 DOI: 10.53907/enpesj.v2i1.67

A. Merchichi, M. Ould Hamou, M. Benzaazoua, F. A. Mansour, Nabil Babahoum, Hakim Rabia

{"title":"Phosphate Amendments for the Inhibition of Acid Mine Drainage Generated from Sidi Kamber Tailings Facility","authors":"A. Merchichi, M. Ould Hamou, M. Benzaazoua, F. A. Mansour, Nabil Babahoum, Hakim Rabia","doi":"10.53907/enpesj.v2i1.67","DOIUrl":"https://doi.org/10.53907/enpesj.v2i1.67","url":null,"abstract":"The aims of this paper was to evaluate the efficiency of phosphates product and by-products from the Djebel Onk mine for the control of acidic mine drainage generated by exposure of Sidi Kamber mine tailings to climatic conditions. Kinetic tests in humidity cells were carried out according to the modified ASTM standard, was used to invistigate the geochemical behaviour of the Sidi Kamber tailings mixed with phosphate materials (phosphatic limestone wastes, raw low grade phosphate ore and phosphate mine tailings) after being characterized. All amendment compositions led to an increase of the pH of the leachate from approximately 3 to circum-neutral values. Humidity cells experiments indicated that the materials were adequate to immobilize Pb, Zn, Cu and Fe by about 99% and prevent their release through the tailings. The tests have also shown that the metals concentrations within the leachate are lower than the limits allowed by Algerian legislation for industrial liquid effluents. Among the tested material amendments, PLW was more effective than other products in immobilizing metals. The results are most probably related to their Ca-carbonate content and/or adsorption capacity.\u0000 ","PeriodicalId":200690,"journal":{"name":"ENP Engineering Science Journal","volume":"80 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125889939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Kernel SVM Classifiers based on Fractal Analysis for Estimation of Hearing Loss 基于分形分析的核支持向量机分类器用于听力损失估计

ENP Engineering Science Journal Pub Date : 2022-07-29 DOI: 10.53907/enpesj.v2i1.88

M. Djemai, M. Guerti

{"title":"Kernel SVM Classifiers based on Fractal Analysis for Estimation of Hearing Loss","authors":"M. Djemai, M. Guerti","doi":"10.53907/enpesj.v2i1.88","DOIUrl":"https://doi.org/10.53907/enpesj.v2i1.88","url":null,"abstract":"Hearing screening consists of analyzing the hearing capacity of an individual, regardless of age. It identifies serious hearing problems, degree, type and cause of the hearing loss and the needs of the person to propose a solution. Auditory evoked potentials (AEPs) which are detected on the EEG auditory cortex area are very small signals in response to a sound stimulus (or electric) from the inner ear to the primary auditory areas of the brain. AEPs are noninvasive methods used to detect hearing disorders and to estimate hearing thresholds level. In this paper, due to the nonlinear characteristics of EEG, Detrented Fluctuation Analysis (DFA) is used to characterize the irregularity or complexity of EEG signals by calculating the Fractal Dimension (FD) from the recorded AEP signals of the impaired hearing and the normal subjects. This is to estimate their hearing threshold. In order to classify both groups, hearing impaired and normal persons, support vector machine (SVM) is used. For comparably evaluating the performance of SVM classifier, three kernel functions: linear, radial basis function (RBF) and polynomial are employed to distinguish normal and the abnormal hearing subjects. Grid search technique is selected to estimate the optimal kernel parameters. Our results indicate that the RBF kernel SVM classifier is promising; it is able to obtain a high training as well as testing classification accuracy.","PeriodicalId":200690,"journal":{"name":"ENP Engineering Science Journal","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133991487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Energy Balance Of Third Generation Bioethanol 第三代生物乙醇的能量平衡

ENP Engineering Science Journal Pub Date : 2022-07-29 DOI: 10.53907/enpesj.v2i1.97

Amina Allouache, M. Aziza, T. Ahmed Zaid, M. Amouri

{"title":"Energy Balance Of Third Generation Bioethanol","authors":"Amina Allouache, M. Aziza, T. Ahmed Zaid, M. Amouri","doi":"10.53907/enpesj.v2i1.97","DOIUrl":"https://doi.org/10.53907/enpesj.v2i1.97","url":null,"abstract":"Global greenhouse gas emissions are constantly increasing, despite the partial replacement of fossil fuels by renewable energies. The transport sector is responsible for almost 24% of direct CO2 emissions from the combustion of fossil fuels, generating greenhouse gas emissions, highlighting the need for a greater focus of international policies to encourage the production and the use of biofuels. Bioethanol is the most consumed biofuel in the world; it is produced by fermentation from materials rich in sugar (glucose, starch, cellulose). However, the controversy around the use of first and second generation have forced the transition to the third generation based on marine and freshwater algae; the latter have the advantage of being abundant, even invasive, easy to cultivate with good energy potential. This study proposes a life cycle analysis (LCA) of bioethanol production from the macro algae Ulva Lactuca, it was carried out after the introduction of several data into the SimPro8.1 software (e.g. quantity of water, consumed electricity, used chemicals) using the Impact 2002+ methodology. The results show a positive energy balance reflecting high-energy efficiency since the system produces about 1.44 times the energy consumed.","PeriodicalId":200690,"journal":{"name":"ENP Engineering Science Journal","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132781699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparison of two purification methods of Algerian bentonite: chemical, mineralogical and physicochemical properties 阿尔及利亚膨润土两种提纯方法的化学、矿物学和理化性质比较

ENP Engineering Science Journal Pub Date : 2022-07-29 DOI: 10.53907/enpesj.v2i1.64

Nabil Babahoum, M. Ould Hamou, A. Merchichi, F. A. Mansour

{"title":"Comparison of two purification methods of Algerian bentonite: chemical, mineralogical and physicochemical properties","authors":"Nabil Babahoum, M. Ould Hamou, A. Merchichi, F. A. Mansour","doi":"10.53907/enpesj.v2i1.64","DOIUrl":"https://doi.org/10.53907/enpesj.v2i1.64","url":null,"abstract":"The aim of this work is to evaluate the efficiency of two methods of purification on Algerian bentonite clay. The first method was performed by centrifugation treatment, using sodium hexametaphosphate (NaPO3)6 as a dispersing agent. The second method involves a chemical purification with NaCl, followed by sedimentation technique. The study concerns mineralogical, chemical, structural aspects and a series of physical testing. The results have shown that the raw bentonite (RBN) contain (~ 59%) of montmorillonite, illite (~ 5) and (~26%) of quartz, and feldspar (orthoclase + albite), with 5% of calcite. In the purified state by NaCl (RBN-2), the mineralogical and physicochemical properties including cation exchange capacity and specific surface area are higher than the purified samples by physical beneficiation (by centrifugation - RBN-1). Moreover, the treatment with NaCl increased the montmorillonite content of the bentonite from 56 % to 100%. The quartz impurities were totally removed in RBN-2, whereas impurities (quartz + feldspar) were still observed by the X-ray diffraction (XRD). Finally, the results obtained from the morphological, mineralogical and chemical characterization confirm that the bentonite RBN -2 was more effective , and it has promise as an engineering material compared to the RBN and RBN-1, indicating its possible application in various industrial applications.","PeriodicalId":200690,"journal":{"name":"ENP Engineering Science Journal","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132439221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of Diethyl Hexyl Phthalate Migration from Poly(Vinyl Chloride) Serum Bags 聚氯乙烯血清袋中邻苯二甲酸二乙酯迁移的研究

ENP Engineering Science Journal Pub Date : 2021-12-31 DOI: 10.53907/enpesj.v1i2.48

D. Ikermoud, N. Belhaneche-Bensemra, Hicham Benaissa

{"title":"Investigation of Diethyl Hexyl Phthalate Migration from Poly(Vinyl Chloride) Serum Bags","authors":"D. Ikermoud, N. Belhaneche-Bensemra, Hicham Benaissa","doi":"10.53907/enpesj.v1i2.48","DOIUrl":"https://doi.org/10.53907/enpesj.v1i2.48","url":null,"abstract":"Plasticizers are used to make Poly (Vinyl Chloride) (PVC) flexible so it can be used in different areas such as intravenous solution containers. Plasticizers can migrate from PVC over time because of contact with these solutions; this phenomenon creates gaps in the polymer structure and causes the migration of other additives. This paper discusses the specific migration of di-2-ethyl hexyl phthalate (DEHP) from plasticized poly (vinyl chloride) (PVC) into 5% glucose solution, although studying the possibility of migration of other components. For this purpose, the bags were stored in real conditions by respecting temperatures (20 ± 2°C) and time of conservation (18 months). Samples were taken off every 3 months to be analyzed. The Fourier transform infrared spectroscopy was used to investigate the migration phenomena, the atomic absorption spectrometry was used to follow the migration's evolution of metals from plastic bags and the gas chromatography coupled with mass spectrometry was used for the determination of DEHP migration. The results obtained by the three techniques showed the migration of the serum bags additives such as DEHP in the glucose solution. This migration depends on time of contact.","PeriodicalId":200690,"journal":{"name":"ENP Engineering Science Journal","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114972526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modal identification and dynamic analysis of a 1000 years old historic minaret of Kalaa Beni-Hammad Kalaa Beni-Hammad一座千年历史尖塔的模态识别与动力分析

ENP Engineering Science Journal Pub Date : 2021-12-31 DOI: 10.53907/enpesj.v1i2.56

N. Bourahla, Zakaria Assameur, Mohamed Abed, A. Mebarki

{"title":"Modal identification and dynamic analysis of a 1000 years old historic minaret of Kalaa Beni-Hammad","authors":"N. Bourahla, Zakaria Assameur, Mohamed Abed, A. Mebarki","doi":"10.53907/enpesj.v1i2.56","DOIUrl":"https://doi.org/10.53907/enpesj.v1i2.56","url":null,"abstract":"From structural and material point of view each historic monument is a textbook case, as it differs in shape, age, material characteristics and level of preservation. New means and approaches are used for geometric and shape survey, material and modal characterization, which helps restitute detailed information regarding the structural elements of the edifices. This paper investigates a 1000 years old historic minaret having a square base of 6.50 m of side and 24.70 m height. An ambient vibration survey has been carried out and the results were used to update a Finite Element (FE) model of the minaret in two stages. First, the elastic modulus of the rubble stone masonry has been determined by matching the experimental and numerical fundamental frequency. In a second phase, a frequency response function (FRF) correlation is carried out iteratively by adjusting the damping ratios to minimize the FRF error. The elastic modulus of the rubble stone masonry is found to be in the lowest range of values given in the literature, which confirms a deteriorated quality of the material. A seismic performance of the structure has been carried out using the updated FE model subjected to a set of acceleration time histories having the mean spectrum matching a compatible site spectrum. The stress concentration zones have been determined and a steel tie system to retrofit the structure is proposed. Beside the proposed investigation framework, the characterization results are valuable facts that can be added to the available database of historic monuments.","PeriodicalId":200690,"journal":{"name":"ENP Engineering Science Journal","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134139648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0