Applied Science and Engineering Progress最新文献_第10页

Applicability of Agro-Waste Materials in the Development of Aluminium Matrix Composites for Transport Structures 农业废弃物在运输结构铝基复合材料开发中的适用性

Applied Science and Engineering Progress Pub Date : 2022-12-22 DOI: 10.14416/j.asep.2022.12.003

A. Adediran, M. Sriariyanun

引用次数: 2

Monitoring of Mean Processes with Mixed Moving Average – Modified Exponentially Weighted Moving Average Control Charts 混合移动平均均值过程的监测——修正的指数加权移动平均控制图

Applied Science and Engineering Progress Pub Date : 2022-12-08 DOI: 10.14416/j.asep.2022.12.002

Khanittha Talordphop, S. Sukparungsee, Y. Areepong

{"title":"Monitoring of Mean Processes with Mixed Moving Average – Modified Exponentially Weighted Moving Average Control Charts","authors":"Khanittha Talordphop, S. Sukparungsee, Y. Areepong","doi":"10.14416/j.asep.2022.12.002","DOIUrl":"https://doi.org/10.14416/j.asep.2022.12.002","url":null,"abstract":"In Statistical Process Control, a control chart is the most effective equipment for monitoring and improving processes. Classic control charts were created in the past and were effective at detecting both small and large changes. However, the mixed control chart has been presented to improve the performance of the traditional control chart. This research introduces a new mixed control chart, MA-MEWMA, which combines the moving average (MA) and the modified exponentially weighted moving average (MEWMA) charts to detect the tiny changes in the procedures both of symmetric and asymmetric distributions. The average run length (ARL) can also be used to measure progress in the MA-MEWMA chart with Shewhart, MA, and MEWMA charts that employ Monte Carlo simulation. The experiments demonstrated that the proposed chart had a greater impact compared to all other control charts with the parameter level ±0.05, ±0.10, ±0.25, ±0.50, ±0.75, ±1.00, ±1.50 through discovering a change in the average of the method in the control where ARL0 = 370. On the other hand, when the parameter level was set to 2.00, ±3.00, ±4.00, the MA control chart performed admirably. An excellent example is data set on viscosity from a batch chemical process. Environmental information data were provided to explain how the suggested chart and MA-MEWMA charts are implemented, demonstrating that the MA-MEWMA chart was more successful than other charts in detecting changes.","PeriodicalId":8097,"journal":{"name":"Applied Science and Engineering Progress","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49501283","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

Confidence Interval for the Difference Between Variances of Delta-Gamma Distribution δ - γ分布方差之差的置信区间

Applied Science and Engineering Progress Pub Date : 2022-12-06 DOI: 10.14416/j.asep.2022.12.001

Wansiri Khooriphan, S. Niwitpong, Suparat Niwitpong

{"title":"Confidence Interval for the Difference Between Variances of Delta-Gamma Distribution","authors":"Wansiri Khooriphan, S. Niwitpong, Suparat Niwitpong","doi":"10.14416/j.asep.2022.12.001","DOIUrl":"https://doi.org/10.14416/j.asep.2022.12.001","url":null,"abstract":"Since environmental data are often right-skewed, the gamma distribution is commonly used to model them. However, rainfall data often contain zero observations, so the delta-gamma model is a better fit in these circumstances. Since the variance of delta-gamma distributions is a useful measure of rainfall dispersion, we focused on the difference between the variances of two delta-gamma populations for comparison of the precipitation in two areas in Thailand. We constructed the confidence interval for the difference between the variances of delta-gamma distributions by using various Bayesian and highest posterior density (HPD) methods based on the Jeffrey’s, uniform, or normal-gamma-beta priors and compared with the fiducial quantity (FQ) approach. The performances of the proposed confidence interval methods were evaluated by examining their coverage probabilities and average lengths via a Monte Carlo simulation study. The results indicate that for a small probability of zero observations (δ), the confidence intervals based on FQ and HPD with either the Jeffrey’s or uniform priors are suitable whereas for large δ, the HPD with the normal-gamma-beta prior is recommended. Rainfall data from Lamphun province, Thailand, are used to illustrate the practical efficacies of the proposed methods.","PeriodicalId":8097,"journal":{"name":"Applied Science and Engineering Progress","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47737425","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: 1

Effect of Fiber Orientation on Physical and Mechanical Properties of Typha angustifolia Natural Fiber Reinforced Composites 纤维取向对竹叶天然纤维增强复合材料物理力学性能的影响

Applied Science and Engineering Progress Pub Date : 2022-11-29 DOI: 10.14416/j.asep.2022.11.004

Venkateswaran Bhuvaneswari, L. Rajeshkumar, T. P. Sathishkumar, G. Rajeshkumar, M. Sanjay, S. Siengchin

{"title":"Effect of Fiber Orientation on Physical and Mechanical Properties of Typha angustifolia Natural Fiber Reinforced Composites","authors":"Venkateswaran Bhuvaneswari, L. Rajeshkumar, T. P. Sathishkumar, G. Rajeshkumar, M. Sanjay, S. Siengchin","doi":"10.14416/j.asep.2022.11.004","DOIUrl":"https://doi.org/10.14416/j.asep.2022.11.004","url":null,"abstract":"Natural fiber-reinforced polymer composites (NFRPC) are sustainable, renewable, and potential replacements in lieu of non-renewable and non-biodegradable synthetic fiber-reinforced composites. The application spectrum of natural fiber composites is widening day by day due to rigorous research carried out on these materials. Accordingly, the current study aims to determine the mechanical properties like impact and compressive strength and physical properties like water absorption behavior for Typha angustifolia (TA) fibers reinforced composites (TFRC). Composites were fabricated using the compression molding method with fibers in unidirectional (UD) and bidirectional (BD) orientation with a weight fraction of 10, 15, and 20%. X-ray diffraction studies were carried out on the fabricated composites to ascertain the presence of micro constituents. All the tests were conducted according to ASTM standards. Results indicated that 20% of TFR composites in BD orientation outperformed other composites. Failure surface morphology was analyzed using scanning electron microscopic analysis (SEM).","PeriodicalId":8097,"journal":{"name":"Applied Science and Engineering Progress","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43751511","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: 1

Fabrication and Characterization of an Active Nanocomposite Film based on Polystyrene/ Thyme/Nano ZnO for Food Packaging 基于聚苯乙烯/百里香/纳米ZnO的食品包装活性纳米复合膜的制备与表征

Applied Science and Engineering Progress Pub Date : 2022-11-23 DOI: 10.14416/j.asep.2022.11.003

T. Thirugnanasambandan, Senthil Muthu Kumar Thiagamani, Hariram Natarajan, S. Siengchin, S. Rangappa

{"title":"Fabrication and Characterization of an Active Nanocomposite Film based on Polystyrene/ Thyme/Nano ZnO for Food Packaging","authors":"T. Thirugnanasambandan, Senthil Muthu Kumar Thiagamani, Hariram Natarajan, S. Siengchin, S. Rangappa","doi":"10.14416/j.asep.2022.11.003","DOIUrl":"https://doi.org/10.14416/j.asep.2022.11.003","url":null,"abstract":"The main objective of this research is to develop an active antifungal packaging material utilizing polystyrene as the matrix material with active agents. The uniqueness of this study lies in the use of thyme extract as a reducing agent in the green synthesis of zinc oxide nanoparticles. The nanocomposite film was fabricated by impregnating zinc oxide nanoparticles in polystyrene. The nanocomposite films were characterized using XRD, FTIR, SEM and antifungal testing. The crystallite size of the synthesized ZnO NPs was observed to be in the 20–30 nm range. The FTIR spectra revealed the presence of ZnO NPs at the peak of 1000 cm–1. The morphological analysis showed the nanoparticles having a spherical shape. The results indicated that nanocomposite films exhibited excellent resistance against the fungus viz., Pencillum sp, Nigrospora oryzae and Chaetomium oryzae. The development of such active packaging materials with nanoparticles to preserve food grains will pave the way for a new technological path in food packaging applications.","PeriodicalId":8097,"journal":{"name":"Applied Science and Engineering Progress","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42947266","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: 2

How Organic Fertilizers can be used as a Plant Nutrient Source in Hydroponics: A Review 有机肥料如何在水培中用作植物营养源：综述

Applied Science and Engineering Progress Pub Date : 2022-11-10 DOI: 10.14416/j.asep.2022.11.002

Elman Cantero Torres, Carolyn Grace Galo Somera

{"title":"How Organic Fertilizers can be used as a Plant Nutrient Source in Hydroponics: A Review","authors":"Elman Cantero Torres, Carolyn Grace Galo Somera","doi":"10.14416/j.asep.2022.11.002","DOIUrl":"https://doi.org/10.14416/j.asep.2022.11.002","url":null,"abstract":"Sustainable crop production can be achieved by integrating the concept of modern agriculture with hydroponics for plant production and organic agriculture with the use of organic fertilizer as an alternative to the chemicalbased nutrient solution. Organic fertilizers contain a significant amount of essential nutrients needed by the plant for growth and development. Various approaches have been studied to test the viability of organic fertilizer as a nutrient source in hydroponics, such as replacing inorganic substrates with organic substrates, partial replacement, and full replacement of chemical-based nutrient solutions with organic fertilizers. Full replacement of nutrient solutions with organic fertilizers is deemed to be the most sustainable approach. However, unlike nutrient solution, which has an established optimum operation parameter, organic fertilizer as a nutrient solution in hydroponics faces several challenges, such as variability of the quality of organic fertilizers, nutrient management and optimization of the operating parameters. This review provides a general overview of the various approaches to utilize organic fertilizer as a plant nutrient source in hydroponics. In addition, this review provides a synthesis of hydroponics and its applicability to sustainable production, nutrient content of commonly used organic fertilizers and chemical-based nutrient solutions, a comparison of the plant growth and quality using organic fertilizer and chemical-based nutrient solutions and important operating parameters on utilizing organic fertilizers in hydroponics.","PeriodicalId":8097,"journal":{"name":"Applied Science and Engineering Progress","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44360497","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

Experimental Analysis of Surface Roughness in the Cutting Process of Sugar Palm Fiber Reinforced Unsaturated Polyester Composites with Laser Beam and Abrasive Water Jet Cutting Technologies 激光与磨料水射流切割糖棕榈纤维增强不饱和聚酯复合材料表面粗糙度的实验分析

Applied Science and Engineering Progress Pub Date : 2022-11-08 DOI: 10.14416/j.asep.2022.11.001

Fathi Masoud, S. M. Sapuan, Mohd Khairol Anuar Mohd Ariffin, Y. Nukman, E. Bayraktar

{"title":"Experimental Analysis of Surface Roughness in the Cutting Process of Sugar Palm Fiber Reinforced Unsaturated Polyester Composites with Laser Beam and Abrasive Water Jet Cutting Technologies","authors":"Fathi Masoud, S. M. Sapuan, Mohd Khairol Anuar Mohd Ariffin, Y. Nukman, E. Bayraktar","doi":"10.14416/j.asep.2022.11.001","DOIUrl":"https://doi.org/10.14416/j.asep.2022.11.001","url":null,"abstract":"This research aims to investigate the effects of the input parameters on the surface roughness as output parameters of CO2 laser and abrasive water jet (AWJ) machining technologies utilized in cutting sugar palm fiber reinforced unsaturated polyester (SPF-UPE) composite of three specimen thicknesses. The objective of this study is to collect data involve the optimal parameters of these technologies regarding the surface roughness response. The motive was to avoid defects arising use in the conventional cutting techniques. In the AWJ technique, stand-offdistance, traverse speed, and water pressure were chosen as variable input parameters to optimize the surface roughness, whereas laser power, traverse speed, and gas pressure were the variable input parameters in the CO2 laser cutting technique. Taguchi’s approach was used to estimate the input parameter’s levels that produce the best surface roughness. Analysis of variation (ANOVA) was used to determine the contribution of every single input processing parameter to the effect on the surface roughness response. Good surface roughness responses could be attained by applying the optimum input parameters determined in this study. The experimental results of the current research provide practical data for the cutting of SPF-UPE composites with CO2 laser and AWJ machining techniques, and the findings can be used as a good starting point for the testing of other similar composites under the same cutting conditions","PeriodicalId":8097,"journal":{"name":"Applied Science and Engineering Progress","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43603329","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

Protection of HDG Steel Using ORMOSIL Coatings Enhanced with CeO2(5-ATDT)- Ceramic Nanocontainers 用CeO2（5-ATDT）增强的ORMOSIL涂层保护HDG钢-陶瓷纳米容器

Applied Science and Engineering Progress Pub Date : 2022-10-18 DOI: 10.14416/j.asep.2022.10.002

G. Kordas

引用次数: 1

Nanomaterials’ Application in Architectural Façades in Italy 纳米材料在意大利建筑外墙中的应用

Applied Science and Engineering Progress Pub Date : 2022-10-03 DOI: 10.14416/j.asep.2022.10.001

Djamil Ben Ghida

{"title":"Nanomaterials’ Application in Architectural Façades in Italy","authors":"Djamil Ben Ghida","doi":"10.14416/j.asep.2022.10.001","DOIUrl":"https://doi.org/10.14416/j.asep.2022.10.001","url":null,"abstract":"Nanotechnology and nanomaterials are revolutionizing the construction industry by improving material's durability, strength, and performance. Nanomaterials have a direct impact on building's energy efficiency, façade aesthetics, urban attractiveness, urban pollution, and built heritage preservation. In this paper, it will be confirmed that nanomaterials are providing cutting-edge technical solutions for the European building stock by addressing current biodeterioration and weathering of buildings, reducing CO2 emissions, and having a positive impact on the building sector as a whole, including structure, surface coatings, energy consumption, and COVID-19 outbreak. The methodology used is exploratory and descriptive, with two Italian case studies analysis thrown in for good mixed-methods analysis. The empirical analysis investigates the environmental health and economic benefits of deploying nanotechnology systems in Italian building facades. The objective of the research is to analyze the characteristics and functions of nanoparticles; demonstrating how nano-features can lower energy use, improve contextual urban quality, preserve architectural historical identity, mitigate coronavirus outbreaks, and eventually change the future design thinking process of architects. The paper's originality stems from its synoptic approach and holistic analysis of nanomaterials utilized in Italian façade structures.","PeriodicalId":8097,"journal":{"name":"Applied Science and Engineering Progress","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44923920","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: 1

Analysis of Teachers’ Competences for Industry 4.0 Subjects: A Case of Thai Higher Education Institutions 工业4.0学科教师能力分析——以泰国高等教育机构为例

Applied Science and Engineering Progress Pub Date : 2022-09-20 DOI: 10.14416/j.asep.2022.09.005

R. M. Lima, R. Sousa, Lino Costa, Cristiano Jesus, D. Mesquita, A. Kengpol, W. Meethom

{"title":"Analysis of Teachers’ Competences for Industry 4.0 Subjects: A Case of Thai Higher Education Institutions","authors":"R. M. Lima, R. Sousa, Lino Costa, Cristiano Jesus, D. Mesquita, A. Kengpol, W. Meethom","doi":"10.14416/j.asep.2022.09.005","DOIUrl":"https://doi.org/10.14416/j.asep.2022.09.005","url":null,"abstract":"The era of Industry 4.0 (I4.0) requires technology and engineering higher education institutions to provide their students with the competences inherent to this evolution. This requires teaching staff training, but first, naturally, teachers’ level of competences must be assessed. The objective of this work is to assess the current level of teaching staff self-perceived competences related to product, process, and production in the I4.0 Era, using a tailor-made questionnaire. Additionally, the work aims to evaluate the relation between academic degrees and years of experience, with the level of self-perceived competences. In terms of methodology, the development of the questionnaire’s items was based on the Acatech framework and existing I4.0 courses. The questionnaire was validated through the following steps: 1) think-aloud procedures with 4 teaching staff, and 2) test and retest statistics validation, developed with approximately 30 teaching staff from the referred institutions. Then, the questionnaire was applied to more than 200 teaching staff. Two I4.0 areas showed a lower level of self-perceived competence: Data Analytics and Digital Manufacturing. It became evident that the teaching staff, regardless of their level of experience or academic degree, may benefit from organizational and people management training including processes and techniques related to I4.0.","PeriodicalId":8097,"journal":{"name":"Applied Science and Engineering Progress","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47468658","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