Volume 21, Issue 1最新文献_第2页

Sports Data Analysis by using Bivariate Poisson Models in theBayesian Framework 基于贝叶斯框架的双变量泊松模型的体育数据分析

Volume 21, Issue 1 Pub Date : 2023-06-30 DOI: 10.52584/qrj.2101.02

Sabina Shahin

引用次数: 0

Sustainable Performance Measurement in Manufacturing Process of Textile Industry by using Analytical Hierarchy Process 基于层次分析法的纺织工业制造过程可持续绩效评价

Volume 21, Issue 1 Pub Date : 2023-06-30 DOI: 10.52584/qrj.2101.06

M. Siraj

{"title":"Sustainable Performance Measurement in Manufacturing Process of Textile Industry by using Analytical Hierarchy Process","authors":"M. Siraj","doi":"10.52584/qrj.2101.06","DOIUrl":"https://doi.org/10.52584/qrj.2101.06","url":null,"abstract":"Sustainable manufacturing practices in textile industry have become a crucial topic for managers of manufacturing organizations to remain competitive in the market. The textile sector is well known for consuming a large amount of natural resources, raw materials, energy, and fossil fuels, and for being a significant contributor to pollution. Evaluating sustainability performance of textile manufacturing companies is therefore important. To address this, a study has developed an Analytical hierarchy process (AHP)-based model for assessing sustainable manufacturing performance. The study identifies performance measures for sustainable manufacturing based on economic, environmental, social, and technical factors, and confirms their relevance through a survey. The findings demonstrate that all measures are extremely important and are suggested as key performance measures for textile sector. Then, AHP is used to evaluate sustainable manufacturing performance based on these measures, results in quality and employee ranking as highest critical factors, and complexity and flexibility as least important. The study offers hierarchical model for evaluating sustainability performance of five case organizations, providing guidance for production managers to assess strengths and weaknesses of their organizations. These findings encourage researchers and practitioners to study more about sustainability evaluation.","PeriodicalId":426146,"journal":{"name":"Volume 21, Issue 1","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127345360","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

Workability and Compressive Strength of Recycled Aggregate Concrete with Different Water-Cement Ratios 不同水灰比再生骨料混凝土的和易性及抗压强度

Volume 21, Issue 1 Pub Date : 2023-06-30 DOI: 10.52584/qrj.2101.15

Irfan Ali

{"title":"Workability and Compressive Strength of Recycled Aggregate Concrete with Different Water-Cement Ratios","authors":"Irfan Ali","doi":"10.52584/qrj.2101.15","DOIUrl":"https://doi.org/10.52584/qrj.2101.15","url":null,"abstract":"Use of demolishing waste in new concrete to develop green concrete has proved the need of the day with respect to the preservation of the environment from negative effects and natural sources of the aggregates. This research work presents laboratory investigations on the effect of different water-cement ratios on the workability and compressive strength of concrete made with 50% replacement of natural coarse aggregates with coarse aggregates from demolishing waste. Basic properties: water absorption, specific gravity, and abrasion resistance of both types of aggregates were assessed. A total of eight mixes were designed with water-cement ratios from 0.45 to 0.75 with an increment of 0.05. One mix with 100% conventional aggregates was designed and considered as a control mix to equate the results. A slump test was done to check the workability of all blends. Followed by casting, curing for 28 days, and testing of specimens for compressive strength were done. Test results show that a higher water-cement ratio increases the workability of the concrete but the compressive strength reduces. Assessment of the obtained results with those of the control mix shows a 70% improvement in slump values and 6.7% reduction in compressive strength with water cement ratio equal to 0.55 in comparison to the control mix made with water cement ratio equal to 0.45.","PeriodicalId":426146,"journal":{"name":"Volume 21, Issue 1","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117082088","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

Mechanical Analysis of Downsized Automobile Piston through Simulation 小型化汽车活塞的力学仿真分析

Volume 21, Issue 1 Pub Date : 2023-06-30 DOI: 10.52584/qrj.2101.12

A. Bhutto

{"title":"Mechanical Analysis of Downsized Automobile Piston through Simulation","authors":"A. Bhutto","doi":"10.52584/qrj.2101.12","DOIUrl":"https://doi.org/10.52584/qrj.2101.12","url":null,"abstract":"Engine downsizing technology benefits the environment in terms of emission gases and also reduces the usage of fuel in automobiles. Reducing the number of pistons and or their dimensions is among the most suitable techniques for engine downsizing. However, reducing the size of the pistons will cause another issue to with withstanding the applied forces generated due to combustion gases during combustion. Therefore, in this research work, the automobile piston was analyzed through simulation using ANSYSv17.2 after a 10% stroke reduction in its dimension. Further, to advance the novelty of this research work; 02-different automobile piston shapes: and hollow and toroidal combustion chambers (HCC & TCC) were reduced for investigating mechanical analysis. For mechanical analysis: maximum principal stresses, Von-Misses stresses, and total deformation before and after downsizing were analyzed. The results revealed that the maximum principal stresses, Von-Misses stresses, and total deformation were increased by 42%, 33.5%, 41.4%, 26.7%, 14.1%, and 8.2% after downsizing the HCC and TCC pistons respectively. Additionally, TCC offered better resistance to applied forces as compared to HCC. However, the increased values were within the maximum ultimate stress of the material, and it can be concluded that the 10% by stroke downsizing is under safe mode.","PeriodicalId":426146,"journal":{"name":"Volume 21, Issue 1","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124516701","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