{"title":"study on reduction of cost overrun and time delay in building construction using six sigma","authors":"nbspsheik farid.a","doi":"10.1729/JOURNAL.27602","DOIUrl":"https://doi.org/10.1729/JOURNAL.27602","url":null,"abstract":"","PeriodicalId":14009,"journal":{"name":"International Journal of Mechanical and Production Engineering Research and Development","volume":"116 1","pages":"38-45"},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81330683","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}
{"title":"The Piston motion in a Free-Piston driver for Shock Tubes & Tunnels","authors":"nbspM Pramod, nbspM Bindu Bhargavi, nbspDr. Maruthu Pandiyan","doi":"10.1729/JOURNAL.27237","DOIUrl":"https://doi.org/10.1729/JOURNAL.27237","url":null,"abstract":"","PeriodicalId":14009,"journal":{"name":"International Journal of Mechanical and Production Engineering Research and Development","volume":"44 1","pages":"243-254"},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79396216","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}
{"title":"Study among Rural area citizen regard to Cyber Security awareness & Factors relating to it","authors":"nbspSenthuran Nallainathan","doi":"10.1729/JOURNAL.26493","DOIUrl":"https://doi.org/10.1729/JOURNAL.26493","url":null,"abstract":"","PeriodicalId":14009,"journal":{"name":"International Journal of Mechanical and Production Engineering Research and Development","volume":"51 1","pages":"322-326"},"PeriodicalIF":0.0,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75904097","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}
Pub Date : 2021-01-01DOI: 10.24247/IJMPERDAUG20211
C. Onyishi, Tjprc
Studies in science, technology, engineering and math (STEM) have focused considerably on issues related to underrepresented groups’ participation in STEM disciplines. Students with disabilities are among the groups that are underrepresented in STEM careers worldwide. The problem is of great concern as persons with disabilities are rarely found in stem career fields. This study investigated whether and to what extent the selected factors predict STEM career interest in students with disabilities in senior secondary schools in Nigeria. A quantitative approach was utilized in the study, using descriptive research design. Data were collected using a demographic questionnaire, three subscales were of the interest in STEM career questionnaire developed by Halim et al., (2018), and stem Career Interest Survey (STEM-CIS) (Kier et al., 2014). Data analyses were conducted using descriptive statistic and regression analyses. Descriptive statistics showed that participants recorded high score in social influences on STEM career interests (Mean= 3.42, SD=.69) and poor perception of STEM career (Mean=2.45, SD=.72)among students with disabilities. Regression analysis showed that interest in STEM career fields, such as science, technology, engineering and mathematics related careers were predicted by social influences, perception of STEM career and STEM self-efficacy in the participants. It was concluded that social influences, perception of STEM careers and STEM self-efficacy were the major determinants of STEM career interests in students with disabilities. These findings can be used to inform career counseling and research.
科学、技术、工程和数学(STEM)领域的研究相当关注与代表性不足的群体参与STEM学科相关的问题。残疾学生是全球STEM职业中代表性不足的群体之一。由于在stem职业领域很少发现残疾人，这一问题引起了人们的极大关注。本研究调查了所选因素是否以及在多大程度上预测尼日利亚高中残疾学生的STEM职业兴趣。本研究采用描述性研究设计，采用定量方法。数据收集使用人口统计问卷，STEM职业兴趣问卷(Halim et al.， 2018)和STEM职业兴趣调查(STEM- cis) (Kier et al.， 2014)中的三个子量表。资料分析采用描述性统计和回归分析。描述性统计显示，被试对STEM职业兴趣的社会影响得分较高(Mean= 3.42, SD= 0.69)，对STEM职业的认知得分较低(Mean=2.45, SD= 0.72)。回归分析显示，社会影响、STEM职业感知和STEM自我效能感可以预测参与者对科学、技术、工程和数学相关职业领域的兴趣。研究发现，社会影响、STEM职业认知和STEM自我效能感是残疾学生STEM职业兴趣的主要决定因素。这些发现可用于职业咨询和研究。
{"title":"Factors Influencing Stem Career Interests in High School Students with Disabilities","authors":"C. Onyishi, Tjprc","doi":"10.24247/IJMPERDAUG20211","DOIUrl":"https://doi.org/10.24247/IJMPERDAUG20211","url":null,"abstract":"Studies in science, technology, engineering and math (STEM) have focused considerably on issues related to underrepresented groups’ participation in STEM disciplines. Students with disabilities are among the groups that are underrepresented in STEM careers worldwide. The problem is of great concern as persons with disabilities are rarely found in stem career fields. This study investigated whether and to what extent the selected factors predict STEM career interest in students with disabilities in senior secondary schools in Nigeria. A quantitative approach was utilized in the study, using descriptive research design. Data were collected using a demographic questionnaire, three subscales were of the interest in STEM career questionnaire developed by Halim et al., (2018), and stem Career Interest Survey (STEM-CIS) (Kier et al., 2014). Data analyses were conducted using descriptive statistic and regression analyses. Descriptive statistics showed that participants recorded high score in social influences on STEM career interests (Mean= 3.42, SD=.69) and poor perception of STEM career (Mean=2.45, SD=.72)among students with disabilities. Regression analysis showed that interest in STEM career fields, such as science, technology, engineering and mathematics related careers were predicted by social influences, perception of STEM career and STEM self-efficacy in the participants. It was concluded that social influences, perception of STEM careers and STEM self-efficacy were the major determinants of STEM career interests in students with disabilities. These findings can be used to inform career counseling and research.","PeriodicalId":14009,"journal":{"name":"International Journal of Mechanical and Production Engineering Research and Development","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72787120","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}
Pub Date : 2021-01-01DOI: 10.24247/IJMPERDAPR202129
P. B. Sob, Tjprc
A nanostructured material was produced by accumulated roll bonding (ARB) process after several passes. The grain dislocation, grain rotation, grain curvature angles and the fraction of high angle grain boundaries increased as the ARB cycles increases. During ARB cycles, the material was observed to elongate more as the temperature in the material increases due to adiabatic warming that takes place during ARB cycles. The optimum temperature on the material was achieved for maximum elongation to failure. This causes more material elongation at higher temperature and material fatigue takes at the maximum temperature during ARB cycles. The obtained results revealed indication of material fracture surfaces in higher temperature after several ARB cycles than in lower temperature. The reason for this was due to deeper, bigger, and longer being observed in high temperature elongation than in low temperature elongation range during ARB cycles.
{"title":"The Effect of Temperature on Elongation to Failure in Nanostructured Material Fabricated by ARB Process","authors":"P. B. Sob, Tjprc","doi":"10.24247/IJMPERDAPR202129","DOIUrl":"https://doi.org/10.24247/IJMPERDAPR202129","url":null,"abstract":"A nanostructured material was produced by accumulated roll bonding (ARB) process after several passes. The grain dislocation, grain rotation, grain curvature angles and the fraction of high angle grain boundaries increased as the ARB cycles increases. During ARB cycles, the material was observed to elongate more as the temperature in the material increases due to adiabatic warming that takes place during ARB cycles. The optimum temperature on the material was achieved for maximum elongation to failure. This causes more material elongation at higher temperature and material fatigue takes at the maximum temperature during ARB cycles. The obtained results revealed indication of material fracture surfaces in higher temperature after several ARB cycles than in lower temperature. The reason for this was due to deeper, bigger, and longer being observed in high temperature elongation than in low temperature elongation range during ARB cycles.","PeriodicalId":14009,"journal":{"name":"International Journal of Mechanical and Production Engineering Research and Development","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73019979","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}
Pub Date : 2021-01-01DOI: 10.24247/ijmperdjun202120
Jovita Chinelo Ejimonye et al., Jovita Chinelo Ejimonye et al.,
{"title":"A Survey of the Determinants of Effective E-Learning Education in Nigerian Secondary Schools, A Way of Improving Economics Learning and Social Development in Post Covid-19","authors":"Jovita Chinelo Ejimonye et al., Jovita Chinelo Ejimonye et al.,","doi":"10.24247/ijmperdjun202120","DOIUrl":"https://doi.org/10.24247/ijmperdjun202120","url":null,"abstract":"","PeriodicalId":14009,"journal":{"name":"International Journal of Mechanical and Production Engineering Research and Development","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81225925","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}
Pub Date : 2021-01-01DOI: 10.24247/IJMPERDFEB202114
D. K. Kaithari, Tjprc
Automotive lubricating oil is a high pollutant that needs significant management and accountability from the community and government. These oils in soil or water currents, such as sewage, can harm the environment. Groundwater and soil may become polluted by this. Lubricant costs are lowered by recycling these pollutants into useful products. This is a creative way of treating waste and will have a huge effect on the environment as well. This will decrease air/water contamination and fresh raw materials as well and greenhouse gas emissions will be minimized by recycling. Refining therefore restores the substantial and chemical properties of lubricating oil, which is capable of reverting to the original and intended usage of the oil used for the production of mixed essential oils in lubricants, minimizing the use of virgin oils. To return to its original intended use, recycling reproduces the physical and chemical properties of lubricants. This article explores the refining of lubricating oil using the solvent process and vacuum distillation, by oil recycling technology. Using three types of solvents: 1-propanol, n-butanol, and ethanol, the laboratory experiment was based on a complete global design. The purpose of this document was to recycle engine oil and recover valuable products. Impurities were isolated by filtration and separation, then to recover useful products by solvent extraction. We measured the specific gravity, density, viscosity, flash point, fire point, pour point, sulphate ash content, total base quantity, colour, residue of carbon, water content and compared the original oil. The kinematic and dynamic viscosity of recovered oil was found to be greater by different separation methods at lower temperatures.
{"title":"Recycling of used Lubricating Engine Oil by a Solvent Extraction Process","authors":"D. K. Kaithari, Tjprc","doi":"10.24247/IJMPERDFEB202114","DOIUrl":"https://doi.org/10.24247/IJMPERDFEB202114","url":null,"abstract":"Automotive lubricating oil is a high pollutant that needs significant management and accountability from the community and government. These oils in soil or water currents, such as sewage, can harm the environment. Groundwater and soil may become polluted by this. Lubricant costs are lowered by recycling these pollutants into useful products. This is a creative way of treating waste and will have a huge effect on the environment as well. This will decrease air/water contamination and fresh raw materials as well and greenhouse gas emissions will be minimized by recycling. Refining therefore restores the substantial and chemical properties of lubricating oil, which is capable of reverting to the original and intended usage of the oil used for the production of mixed essential oils in lubricants, minimizing the use of virgin oils. To return to its original intended use, recycling reproduces the physical and chemical properties of lubricants. This article explores the refining of lubricating oil using the solvent process and vacuum distillation, by oil recycling technology. Using three types of solvents: 1-propanol, n-butanol, and ethanol, the laboratory experiment was based on a complete global design. The purpose of this document was to recycle engine oil and recover valuable products. Impurities were isolated by filtration and separation, then to recover useful products by solvent extraction. We measured the specific gravity, density, viscosity, flash point, fire point, pour point, sulphate ash content, total base quantity, colour, residue of carbon, water content and compared the original oil. The kinematic and dynamic viscosity of recovered oil was found to be greater by different separation methods at lower temperatures.","PeriodicalId":14009,"journal":{"name":"International Journal of Mechanical and Production Engineering Research and Development","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87515720","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}
Pub Date : 2021-01-01DOI: 10.24247/IJMPERDAPR202132
M. S. R. Saleh, Tjprc
This study included an experimental investigation for the purpose of improving the performance of a conventional double-pass solar air heater at the climatic conditions of Mosul city/Iraq by replacing the flat absorber plate of the conventional solar air heater with a V-corrugated plate and adding steel wool in the lower passage of the air heater while keeping all dimensions constant for the two heaters. The two heaters were operated together under the same conditions and at a constant air flow 0.0416 kg/s. The results showed that the thermal efficiency and air temperature exiting from the solar heater can be improved using the improvements that have been indicated. As the average thermal efficiency was 66.78% for the improved heater and 30.35% for the conventional heater in the month of March 2020. The results also showed that the improved heater retains the heat gained from solar intensity for a longer period compared to the conventional heater at a constant solar radiation intensity. These improvements also contributed to a clear increase in the temperature of the air exiting the system. The maximum difference in the temperature of the air entering and leaving the heaters in February 2020 reached 28.75°C, and 16.75°C for the improved and conventional heaters, respectively. The results also proved that the improvements over the conventional system led to a reduction in the amount of heat lost from the solar heater.
{"title":"Performance Enhancement of a Double Pass Solar Air Heater Using V-Corrugated Absorber Plate and Steel Wool","authors":"M. S. R. Saleh, Tjprc","doi":"10.24247/IJMPERDAPR202132","DOIUrl":"https://doi.org/10.24247/IJMPERDAPR202132","url":null,"abstract":"This study included an experimental investigation for the purpose of improving the performance of a conventional double-pass solar air heater at the climatic conditions of Mosul city/Iraq by replacing the flat absorber plate of the conventional solar air heater with a V-corrugated plate and adding steel wool in the lower passage of the air heater while keeping all dimensions constant for the two heaters. The two heaters were operated together under the same conditions and at a constant air flow 0.0416 kg/s. The results showed that the thermal efficiency and air temperature exiting from the solar heater can be improved using the improvements that have been indicated. As the average thermal efficiency was 66.78% for the improved heater and 30.35% for the conventional heater in the month of March 2020. The results also showed that the improved heater retains the heat gained from solar intensity for a longer period compared to the conventional heater at a constant solar radiation intensity. These improvements also contributed to a clear increase in the temperature of the air exiting the system. The maximum difference in the temperature of the air entering and leaving the heaters in February 2020 reached 28.75°C, and 16.75°C for the improved and conventional heaters, respectively. The results also proved that the improvements over the conventional system led to a reduction in the amount of heat lost from the solar heater.","PeriodicalId":14009,"journal":{"name":"International Journal of Mechanical and Production Engineering Research and Development","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85360650","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}
Pub Date : 2021-01-01DOI: 10.24247/ijmperdaug202122
Amina Ismail et al., Amina Ismail et al.,
{"title":"Implementing Energy Conservation Measures, A Case Study on Retrofitting a Commercial Building in South Africa","authors":"Amina Ismail et al., Amina Ismail et al.,","doi":"10.24247/ijmperdaug202122","DOIUrl":"https://doi.org/10.24247/ijmperdaug202122","url":null,"abstract":"","PeriodicalId":14009,"journal":{"name":"International Journal of Mechanical and Production Engineering Research and Development","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88879546","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}
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