World Academy of Science, Engineering and Technology, International Journal of Mathematical, Computational, Physical, Electrical and Computer Engineering最新文献_第3页

Role of Dispersion of Multiwalled Carbon Nanotubes on Compressive Strength of Cement Paste 多壁碳纳米管分散对水泥浆体抗压强度的影响

World Academy of Science, Engineering and Technology, International Journal of Mathematical, Computational, Physical, Electrical and Computer Engineering Pub Date : 2014-01-04 DOI: 10.5281/ZENODO.1090913

J. Bharj, Sarabjit Singh, S. Chander, Rabinder Singh

{"title":"Role of Dispersion of Multiwalled Carbon Nanotubes on Compressive Strength of Cement Paste","authors":"J. Bharj, Sarabjit Singh, S. Chander, Rabinder Singh","doi":"10.5281/ZENODO.1090913","DOIUrl":"https://doi.org/10.5281/ZENODO.1090913","url":null,"abstract":"The outstanding mechanical properties of Carbon \u0000nanotubes (CNTs) have generated great interest for their potential as \u0000reinforcements in high performance cementitious composites. The \u0000main challenge in research is the proper dispersion of carbon \u0000nanotubes in the cement matrix. The present work discusses the role \u0000of dispersion of multiwalled carbon nanotubes (MWCNTs) on the \u0000compressive strength characteristics of hydrated Portland IS 1489 \u0000cement paste. Cement-MWCNT composites with different mixing \u0000techniques were prepared by adding 0.2% (by weight) of MWCNTs \u0000to Portland IS 1489 cement. Rectangle specimens of size \u0000approximately 40mm × 40mm ×160mm were prepared and curing of \u0000samples was done for 7, 14, 28 and 35days. An appreciable increase \u0000in compressive strength with both techniques; mixture of MWCNTs \u0000with cement in powder form and mixture of MWCNTs with cement \u0000in hydrated form 7 to 28 days of curing time for all the samples was \u0000observed.","PeriodicalId":23764,"journal":{"name":"World Academy of Science, Engineering and Technology, International Journal of Mathematical, Computational, Physical, Electrical and Computer Engineering","volume":"61 1","pages":"340-343"},"PeriodicalIF":0.0,"publicationDate":"2014-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87022593","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: 14

Nonlinear Integral-Type Sliding Surface for Synchronization of Chaotic Systems with Unknown Parameters 未知参数混沌系统同步的非线性积分型滑动曲面

World Academy of Science, Engineering and Technology, International Journal of Mathematical, Computational, Physical, Electrical and Computer Engineering Pub Date : 2014-01-04 DOI: 10.5281/ZENODO.1337017

Hongji Tang, Yanbo Gao, Yuexin Yu

引用次数: 0

Experimental Study and Analysis of Parabolic trough Collector with Various Reflectors 不同反射面抛物面槽集热器的实验研究与分析

World Academy of Science, Engineering and Technology, International Journal of Mathematical, Computational, Physical, Electrical and Computer Engineering Pub Date : 2013-11-06 DOI: 10.21090/ijaerd.ncrretme09

A. Yadav, M. Kumar, Balram

引用次数: 22

Two Different Computing Methods of the Smith Arithmetic Determinant 史密斯算术行列式的两种不同计算方法

World Academy of Science, Engineering and Technology, International Journal of Mathematical, Computational, Physical, Electrical and Computer Engineering Pub Date : 2013-11-05 DOI: 10.5281/ZENODO.1089413

Xingjun Li, Shen Qu

引用次数: 0

On the Hierarchical Ergodicity Coefficient 关于层次遍历系数

World Academy of Science, Engineering and Technology, International Journal of Mathematical, Computational, Physical, Electrical and Computer Engineering Pub Date : 2013-11-05 DOI: 10.5281/zenodo.1089411

Y. Shang

引用次数: 0

Exact Solutions of the Helmholtz equation via the Nikiforov-Uvarov Method 用Nikiforov-Uvarov方法求亥姆霍兹方程的精确解

World Academy of Science, Engineering and Technology, International Journal of Mathematical, Computational, Physical, Electrical and Computer Engineering Pub Date : 2013-11-03 DOI: 10.5281/zenodo.1089211

S. Laachir, A. Laaribi

引用次数: 3

A Computational Fluid Dynamic Model of Human Sniffing 人类嗅探的计算流体动力学模型

World Academy of Science, Engineering and Technology, International Journal of Mathematical, Computational, Physical, Electrical and Computer Engineering Pub Date : 2013-10-05 DOI: 10.5281/ZENODO.1088752

M. Shyla, K. Naidu

引用次数: 1

Hall Effect on MHD Mixed Convection Flow of Viscous-Elastic Incompressible Fluid Past of an Infinite Porous Medium 无限多孔介质粘弹性不可压缩流体过去MHD混合对流的霍尔效应

World Academy of Science, Engineering and Technology, International Journal of Mathematical, Computational, Physical, Electrical and Computer Engineering Pub Date : 2013-10-04 DOI: 10.5281/ZENODO.1335851

T. Das, N. Senapatil, R. K. Dhal

引用次数: 0

Monte Carlo Analysis and Fuzzy Sets for Uncertainty Propagation in SIS Performance Assessment SIS性能评估中不确定性传播的蒙特卡罗分析与模糊集

World Academy of Science, Engineering and Technology, International Journal of Mathematical, Computational, Physical, Electrical and Computer Engineering Pub Date : 2013-10-04 DOI: 10.1201/b15938-479

F. Innal, Y. Dutuit, Mourad Chebila

{"title":"Monte Carlo Analysis and Fuzzy Sets for Uncertainty Propagation in SIS Performance Assessment","authors":"F. Innal, Y. Dutuit, Mourad Chebila","doi":"10.1201/b15938-479","DOIUrl":"https://doi.org/10.1201/b15938-479","url":null,"abstract":"The object of this work is the probabilistic performance evaluation of safety instrumented systems (SIS), i.e. the average probability of dangerous failure on demand (PFDavg) and the average frequency of failure (PFH), taking into account the uncertainties related to the different parameters that come into play: failure rate (λ), common cause failure proportion (β), diagnostic coverage (DC)... This leads to an accurate and safe assessment of the safety integrity level (SIL) inherent to the safety function performed by such systems. This aim is in keeping with the requirement of the IEC 61508 standard with respect to handling uncertainty. To do this, we propose an approach that combines (1) Monte Carlo simulation and (2) fuzzy sets. Indeed, the first method is appropriate where representative statistical data are available (using pdf of the relating parameters), while the latter applies in the case characterized by vague and subjective information (using membership function). The proposed approach is fully supported with a suitable computer code. Keywords—Fuzzy sets, Monte Carlo simulation, Safety instrumented system, Safety integrity level.","PeriodicalId":23764,"journal":{"name":"World Academy of Science, Engineering and Technology, International Journal of Mathematical, Computational, Physical, Electrical and Computer Engineering","volume":"106 1","pages":"1567-1575"},"PeriodicalIF":0.0,"publicationDate":"2013-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76236412","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: 5

Development of Perez-Du Mortier Calibration Algorithm for Ground-Based Aerosol Optical Depth Measurement with Validation using SMARTS Model 基于SMARTS模型的地面气溶胶光学深度测量Perez-Du Mortier校准算法的发展与验证

World Academy of Science, Engineering and Technology, International Journal of Mathematical, Computational, Physical, Electrical and Computer Engineering Pub Date : 2013-10-02 DOI: 10.5281/ZENODO.1088660

J. Dayou, Jackson Hian Wui Chang, Rubena Yusoff, Ag Sufiyan Abd Hamid, A. S. A. Hamid, F. Sulaiman, J. Sentian

{"title":"Development of Perez-Du Mortier Calibration Algorithm for Ground-Based Aerosol Optical Depth Measurement with Validation using SMARTS Model","authors":"J. Dayou, Jackson Hian Wui Chang, Rubena Yusoff, Ag Sufiyan Abd Hamid, A. S. A. Hamid, F. Sulaiman, J. Sentian","doi":"10.5281/ZENODO.1088660","DOIUrl":"https://doi.org/10.5281/ZENODO.1088660","url":null,"abstract":"Aerosols are small particles suspended in air that have wide varying spatial and temporal distributions. The concentration of aerosol in total columnar atmosphere is normally measured using aerosol optical depth (AOD). In long-term monitoring stations, accurate AOD retrieval is often difficult due to the lack of frequent calibration. To overcome this problem, a near-sea-level Langley calibration algorithm is developed using the combination of clear-sky detection model and statistical filter. It attempts to produce a dataset that consists of only homogenous and stable atmospheric condition for the Langley calibration purposes. In this paper, a radiance-based validation method is performed to further investigate the feasibility and consistency of the proposed algorithm at different location, day, and time. The algorithm is validated using SMARTS model based n DNI value. The overall results confirmed that the proposed calibration algorithm feasible and consistent for measurements taken at different sites and weather conditions.","PeriodicalId":23764,"journal":{"name":"World Academy of Science, Engineering and Technology, International Journal of Mathematical, Computational, Physical, Electrical and Computer Engineering","volume":"32 1","pages":"1543-1548"},"PeriodicalIF":0.0,"publicationDate":"2013-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73262175","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