Pub Date : 2022-12-30DOI: 10.53346/wjetr.2022.2.2.0040
Yusra Abdullah Jasim
This investigation provides a review of the literature on the control of robot arms using the fuzzy logic control and the traditional control with a focus on the first one. With the flexible link classification of single link and multi-link manipulators. In addition to showing common methods for deriving the mathematical modeling of the flexible link manipulator and its comparison based on criteria in the flexible link used. Therefore the main distinguishing feature of the review literature here is that it takes a holistic view of the control process in the various systems, rather than focusing on one side in it, which leads to an insufficient understanding of the control systems used.
{"title":"The literature review in modeling and fuzzy control of flexible manipulator link with moving end effector","authors":"Yusra Abdullah Jasim","doi":"10.53346/wjetr.2022.2.2.0040","DOIUrl":"https://doi.org/10.53346/wjetr.2022.2.2.0040","url":null,"abstract":"This investigation provides a review of the literature on the control of robot arms using the fuzzy logic control and the traditional control with a focus on the first one. With the flexible link classification of single link and multi-link manipulators. In addition to showing common methods for deriving the mathematical modeling of the flexible link manipulator and its comparison based on criteria in the flexible link used. Therefore the main distinguishing feature of the review literature here is that it takes a holistic view of the control process in the various systems, rather than focusing on one side in it, which leads to an insufficient understanding of the control systems used.","PeriodicalId":350484,"journal":{"name":"World Journal of Engineering and Technology Research","volume":"44 43","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131501565","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 : 2022-12-30DOI: 10.53346/wjetr.2022.2.2.0043
Habiballa Sara, Abu-Elgasim Ebtihaj
The usage of high strength glass fiber reinforced concrete (HSGFRC) in the construction applications has been increasing worldwide. Especially in plain concrete due to it is less ductility and high brittle behavior. Use of fiber in plain concrete treating shrinkage cracking as well improve tensile behavior. On the other hand, glass fiber material has some advantage like alkali resistance and light weight compared to steel. Due to these advantages researchers prepared glass fiber reinforced concrete (GFRC) to improve concrete properties. GFRC is composed of fine sand, cement, water, admixtures and alkali-resistant glass fibers (AR-GF). The main objective of this research is to study the effect of addition of alkali resistant glass fiber reinforced polymer (AR-GFRP) in concrete properties. Six different mixes were prepared using different percentage of glass fiber 0.0, 0.75, 1.0, 1.25 and 1.5 by weight of cement the target compressive strength was calculated to be 55.2 MPa. Available materials in the local market were used. Results showed that it is possible to produce HSGFRC in Sudan using locally available materials if they are carefully selected. Based on the experimental results, the compressive strength, splitting tensile strength and density of HSC was found to be increase as fiber percentage increases for both ages of 7 and 28 days. The maximum 28 days compressive strength of HSC was found to be 63.81 MPa recorded in M50 F4 with 1.5 glass fiber reinforcement. The density of HSC is found to increase slightly as fiber percentage increases, density value ranged from 2.415 to 2.442 kg/m3. The maximum 28 day’s splitting tensile strength of HSC was found to be 6.45 MPa recorded in M50 F4 with 1.5 glass fiber reinforcement. It can be concluded that the use of chopped glass fiber in concrete improve the mechanical properties and ductility.
{"title":"The effect of glass fiber reinforcement on properties high strength concrete mix using local materials","authors":"Habiballa Sara, Abu-Elgasim Ebtihaj","doi":"10.53346/wjetr.2022.2.2.0043","DOIUrl":"https://doi.org/10.53346/wjetr.2022.2.2.0043","url":null,"abstract":"The usage of high strength glass fiber reinforced concrete (HSGFRC) in the construction applications has been increasing worldwide. Especially in plain concrete due to it is less ductility and high brittle behavior. Use of fiber in plain concrete treating shrinkage cracking as well improve tensile behavior. On the other hand, glass fiber material has some advantage like alkali resistance and light weight compared to steel. Due to these advantages researchers prepared glass fiber reinforced concrete (GFRC) to improve concrete properties. GFRC is composed of fine sand, cement, water, admixtures and alkali-resistant glass fibers (AR-GF). The main objective of this research is to study the effect of addition of alkali resistant glass fiber reinforced polymer (AR-GFRP) in concrete properties. Six different mixes were prepared using different percentage of glass fiber 0.0, 0.75, 1.0, 1.25 and 1.5 by weight of cement the target compressive strength was calculated to be 55.2 MPa. Available materials in the local market were used. Results showed that it is possible to produce HSGFRC in Sudan using locally available materials if they are carefully selected. Based on the experimental results, the compressive strength, splitting tensile strength and density of HSC was found to be increase as fiber percentage increases for both ages of 7 and 28 days. The maximum 28 days compressive strength of HSC was found to be 63.81 MPa recorded in M50 F4 with 1.5 glass fiber reinforcement. The density of HSC is found to increase slightly as fiber percentage increases, density value ranged from 2.415 to 2.442 kg/m3. The maximum 28 day’s splitting tensile strength of HSC was found to be 6.45 MPa recorded in M50 F4 with 1.5 glass fiber reinforcement. It can be concluded that the use of chopped glass fiber in concrete improve the mechanical properties and ductility.","PeriodicalId":350484,"journal":{"name":"World Journal of Engineering and Technology Research","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125480560","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 : 2022-09-30DOI: 10.53346/wjetr.2022.2.1.0037
Jan Bredenoord, Luz María Sánchez Hurtado
Ciudad Pachacútec is a suburban development scheme north of Lima, where deficiencies were great from the start. The main problem was the population’s safety in the sandy and arid urban landscapes, which are prone to earthquakes. The main objective of the NGO Estrategia - together with the municipality of Ventanilla - was to provide the self-builders with technical and organizational knowledge to improve housing quality. The NGO has developed effective programs to support women's groups in building earthquake-resistant houses. The result was that building materials were produced locally by households that were also trained in construction technology. Some families working together in groups, were able to start businesses. The developed model for earthquake resistant housing in New Pachacútec is effective and can be used in other areas alongside Peru’s Pacific coast, that are prone to earthquakes.
Ciudad Pachacútec是利马北部的一个郊区发展计划，从一开始就存在很大的缺陷。主要问题是人们在多沙和干旱的城市景观中的安全问题，这些城市容易发生地震。非政府组织Estrategia与文塔尼拉市政府合作的主要目标是为自建者提供技术和组织知识，以提高住房质量。该非政府组织制定了有效的方案，支持妇女团体建造抗震房屋。其结果是，建筑材料是由接受过建筑技术培训的家庭在当地生产的。一些家庭在团队中合作，能够创业。在New Pachacútec开发的抗震住房模型是有效的，可以在秘鲁太平洋沿岸的其他地区使用，这些地区容易发生地震。
{"title":"Organized self-help housing in Pachacútec, Peru: Training women's groups in earthquake resistant housing construction","authors":"Jan Bredenoord, Luz María Sánchez Hurtado","doi":"10.53346/wjetr.2022.2.1.0037","DOIUrl":"https://doi.org/10.53346/wjetr.2022.2.1.0037","url":null,"abstract":"Ciudad Pachacútec is a suburban development scheme north of Lima, where deficiencies were great from the start. The main problem was the population’s safety in the sandy and arid urban landscapes, which are prone to earthquakes. The main objective of the NGO Estrategia - together with the municipality of Ventanilla - was to provide the self-builders with technical and organizational knowledge to improve housing quality. The NGO has developed effective programs to support women's groups in building earthquake-resistant houses. The result was that building materials were produced locally by households that were also trained in construction technology. Some families working together in groups, were able to start businesses. The developed model for earthquake resistant housing in New Pachacútec is effective and can be used in other areas alongside Peru’s Pacific coast, that are prone to earthquakes.","PeriodicalId":350484,"journal":{"name":"World Journal of Engineering and Technology Research","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123462338","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}
Visual Arts exhibition, by its nature, holds a mirror up to society, reflecting its interests and concerns while at the same time challenging its ideologies and preconceptions. With the state of political instability in Nigeria today, artists through the medium of visual art exhibition have distinct role to play that may ensure that those factors that accelerate instability be curtailed. The problem this paper addresses is that, these roles played by visual art through exhibitions are being overlooked and not recognized by some artists in Nigeria and the non-artist alike, of which, this paper is aimed at portraying. Information was gathered using primary and secondary sources and the findings made shows that visual art exhibition can serve as an agent for fostering political stability in Nigeria.
{"title":"Visual art exhibition: An agent for political stability in Nigeria","authors":"Idibeke Amos John, Ndem Emmanuel Joseph, Edem Etim Peters","doi":"10.53346/wjetr.2022.2.1.0035","DOIUrl":"https://doi.org/10.53346/wjetr.2022.2.1.0035","url":null,"abstract":"Visual Arts exhibition, by its nature, holds a mirror up to society, reflecting its interests and concerns while at the same time challenging its ideologies and preconceptions. With the state of political instability in Nigeria today, artists through the medium of visual art exhibition have distinct role to play that may ensure that those factors that accelerate instability be curtailed. The problem this paper addresses is that, these roles played by visual art through exhibitions are being overlooked and not recognized by some artists in Nigeria and the non-artist alike, of which, this paper is aimed at portraying. Information was gathered using primary and secondary sources and the findings made shows that visual art exhibition can serve as an agent for fostering political stability in Nigeria.","PeriodicalId":350484,"journal":{"name":"World Journal of Engineering and Technology Research","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129290950","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 : 2022-07-30DOI: 10.53346/wjetr.2022.2.1.0032
Ashraf Alwy Balabel, Hamad Raja Almujibah
Saudi Arabia aims to achieve the principles of sustainable development goals (SDG) in all aspects of life in accordance with its ambitious vision 2030, especially in the field of sustainable passengers and freight transportation. Hyperloop technology can be considered as an excellent sustainable solution for the future of transportation in Saudi Arabia as a result of the availability of auxiliary ingredients, such renewable energy resources and the necessary infrastructure required enhancing the future mobility technology. Hyperloop can reduce the travel time between Saudi cities at a cost equivalent to ticket prices compatible with forms of mass passenger transportation. Accordingly, the Hyperloop technology can be more efficient in terms of energy consumption through the application of renewable energy resources, which makes this technology very attractive to the Saudi Arabia. The present paper discusses the feasibility of Hyperloop technology in Saudi Arabia in technical and economic perspectives including basic performance and cost analysis. Moreover, the integration of different renewable energy recourses, such as solar and hydrogen energy is also discussed. Three major energy systems were reviewed in depth: electrical energy derived from typical fossil fuels and two renewable energy systems based on solar energy, which can be utilized as a primary source of energy or to produce green hydrogen. The overall estimated cost of the three distinct power supply systems was compared using 2022 prices as a benchmark. In comparison to the electrical system and the solar-hydrogen system, the overall cost of the Hyperloop-hydrogen system is the most expensive power supply system. It is expected that the use of Hyperloop technology in Saudi Arabia will be a motivating factor in achieving the Kingdom’s Vision 2030 in the transportation sector and as a catalyst for high technology through its requirements for artificial intelligence programs and computer-based operational systems. It can also achieve a significant increase in Gross Domestic Product (GDP) by providing jobs and opportunities for young Saudi men and women in the high-technology sector.
{"title":"Towards sustainable transportation: The development of hyperloop technology in Saudi Arabia","authors":"Ashraf Alwy Balabel, Hamad Raja Almujibah","doi":"10.53346/wjetr.2022.2.1.0032","DOIUrl":"https://doi.org/10.53346/wjetr.2022.2.1.0032","url":null,"abstract":"Saudi Arabia aims to achieve the principles of sustainable development goals (SDG) in all aspects of life in accordance with its ambitious vision 2030, especially in the field of sustainable passengers and freight transportation. Hyperloop technology can be considered as an excellent sustainable solution for the future of transportation in Saudi Arabia as a result of the availability of auxiliary ingredients, such renewable energy resources and the necessary infrastructure required enhancing the future mobility technology. Hyperloop can reduce the travel time between Saudi cities at a cost equivalent to ticket prices compatible with forms of mass passenger transportation. Accordingly, the Hyperloop technology can be more efficient in terms of energy consumption through the application of renewable energy resources, which makes this technology very attractive to the Saudi Arabia. The present paper discusses the feasibility of Hyperloop technology in Saudi Arabia in technical and economic perspectives including basic performance and cost analysis. Moreover, the integration of different renewable energy recourses, such as solar and hydrogen energy is also discussed. Three major energy systems were reviewed in depth: electrical energy derived from typical fossil fuels and two renewable energy systems based on solar energy, which can be utilized as a primary source of energy or to produce green hydrogen. The overall estimated cost of the three distinct power supply systems was compared using 2022 prices as a benchmark. In comparison to the electrical system and the solar-hydrogen system, the overall cost of the Hyperloop-hydrogen system is the most expensive power supply system. It is expected that the use of Hyperloop technology in Saudi Arabia will be a motivating factor in achieving the Kingdom’s Vision 2030 in the transportation sector and as a catalyst for high technology through its requirements for artificial intelligence programs and computer-based operational systems. It can also achieve a significant increase in Gross Domestic Product (GDP) by providing jobs and opportunities for young Saudi men and women in the high-technology sector.","PeriodicalId":350484,"journal":{"name":"World Journal of Engineering and Technology Research","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124550217","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 : 2022-05-30DOI: 10.53346/wjetr.2022.1.2.0023
Hamed M. Almalki, Ashraf E. Balabel, Mostafa A. Kamel
Quality in higher education academic programs in general and in particular engineering education programs is one of the essential issues in the process of developing and modernizing the education system within the vision of the Kingdom of Saudi Arabia 2030. The development of engineering programs outcomes is also one of the challenges facing engineering colleges in Saudi universities. To achieve a comprehensive educational quality practice that leads to bridge the gap between engineering education outcomes and labor market requirements, engineering programs outcomes should be developed in line with the changes of the modern era and the requirements of the accelerated technological labor market. This target is one of the basic and strategic pillars for achieving this ambitious vision through the effective role of Saudi universities in this context. In the present study, the development of learning outcomes in the previous period for engineering education programs is reviewed through the National Center for Academic Assessment and Accreditation (NCAAA) as well as through the Accreditation Council for Engineering and Technology (ABET). A model for developing study plans and redesigning various engineering programs to achieve a distinct level of the quality of engineering education is presented through the National Transformation Program 2020. Through this philosophy of change to formulate learning outcomes for engineering programs and their diversity, the updated assessment methods have been reviewed and proposed to measure those outcomes in a distinct way. This study will offer a guide that helps the teaching staff to choose the most appropriate assessment methods with setting the priorities of the measurement methods for each educational outcome of the curriculum. The presented scientific paper provides a model for continuous evaluation plans of the educational process in engineering programs to achieve the goals of engineering programs that seek to distinguish their graduates and raise their productivity and increase their competitiveness in a way that suits the nature of the current labor market.
{"title":"Development of engineering programs learning outcomes in light of the Kingdom of Saudi Arabia’s Vision 2030","authors":"Hamed M. Almalki, Ashraf E. Balabel, Mostafa A. Kamel","doi":"10.53346/wjetr.2022.1.2.0023","DOIUrl":"https://doi.org/10.53346/wjetr.2022.1.2.0023","url":null,"abstract":"Quality in higher education academic programs in general and in particular engineering education programs is one of the essential issues in the process of developing and modernizing the education system within the vision of the Kingdom of Saudi Arabia 2030. The development of engineering programs outcomes is also one of the challenges facing engineering colleges in Saudi universities. To achieve a comprehensive educational quality practice that leads to bridge the gap between engineering education outcomes and labor market requirements, engineering programs outcomes should be developed in line with the changes of the modern era and the requirements of the accelerated technological labor market. This target is one of the basic and strategic pillars for achieving this ambitious vision through the effective role of Saudi universities in this context. In the present study, the development of learning outcomes in the previous period for engineering education programs is reviewed through the National Center for Academic Assessment and Accreditation (NCAAA) as well as through the Accreditation Council for Engineering and Technology (ABET). A model for developing study plans and redesigning various engineering programs to achieve a distinct level of the quality of engineering education is presented through the National Transformation Program 2020. Through this philosophy of change to formulate learning outcomes for engineering programs and their diversity, the updated assessment methods have been reviewed and proposed to measure those outcomes in a distinct way. This study will offer a guide that helps the teaching staff to choose the most appropriate assessment methods with setting the priorities of the measurement methods for each educational outcome of the curriculum. The presented scientific paper provides a model for continuous evaluation plans of the educational process in engineering programs to achieve the goals of engineering programs that seek to distinguish their graduates and raise their productivity and increase their competitiveness in a way that suits the nature of the current labor market.","PeriodicalId":350484,"journal":{"name":"World Journal of Engineering and Technology Research","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126311555","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}
The stabilization capability of kaolin clay powder (KCP), Ordinary Portland cement (OPC) and rice husk ash (RHA) was scrutinized using laboratory scrutiny. This was meant at assessing the effect of KCP, OPC and RHA on the stabilization of three lateritic soils for use as sub-base pavement layer materials. Three soils (Soil A, B and C) were improved with various percentages (via weight of dry soil) at 0, 2, 4, 6, 8 and 10% for all stabilizing agents and compacted via BSL (British Standard light) energy. Their impacts were assessed on the strength physiognomies such as UCS (unconfined compressive strength), OMC (optimum moisture content), and California bearing ratio (CBR), and MDD (maximum dry density tests based on ASTM (American Standard Testing Materials) codes. The result reveals that MDD improved with increase in the quantities of all the additive (SSA, KCP and geopolymer) content, while OMC for KCP reduces from 18.65% at 0% to 14.02%. Both SSA and geopolymer increase from 18.65% at 0% to 18.86% and 22.20% at 10%. Similarly it displays highest CBR of the soil from 10.88% at 0% to 12.84%, 112.95% and 144.45% for (SSA, KCP and geopolymer, this specify that lateritic soil treated with 2% stabilizer yielded CBR values of more than 405%.
{"title":"Effect of triaxial and CBR Scrutiny on mechanical strength and microstructure of kaolin clay powder mixed SSA geopolymer and its performance at various percentages","authors":"Olugbenga Oludolapo Amu, Christopher Ehizemhen Igibah, Bamitale Dorcas Oluyemi-Ayibiowu, Lucia Omolayo Agashua","doi":"10.53346/wjetr.2022.1.1.0024","DOIUrl":"https://doi.org/10.53346/wjetr.2022.1.1.0024","url":null,"abstract":"The stabilization capability of kaolin clay powder (KCP), Ordinary Portland cement (OPC) and rice husk ash (RHA) was scrutinized using laboratory scrutiny. This was meant at assessing the effect of KCP, OPC and RHA on the stabilization of three lateritic soils for use as sub-base pavement layer materials. Three soils (Soil A, B and C) were improved with various percentages (via weight of dry soil) at 0, 2, 4, 6, 8 and 10% for all stabilizing agents and compacted via BSL (British Standard light) energy. Their impacts were assessed on the strength physiognomies such as UCS (unconfined compressive strength), OMC (optimum moisture content), and California bearing ratio (CBR), and MDD (maximum dry density tests based on ASTM (American Standard Testing Materials) codes. The result reveals that MDD improved with increase in the quantities of all the additive (SSA, KCP and geopolymer) content, while OMC for KCP reduces from 18.65% at 0% to 14.02%. Both SSA and geopolymer increase from 18.65% at 0% to 18.86% and 22.20% at 10%. Similarly it displays highest CBR of the soil from 10.88% at 0% to 12.84%, 112.95% and 144.45% for (SSA, KCP and geopolymer, this specify that lateritic soil treated with 2% stabilizer yielded CBR values of more than 405%.","PeriodicalId":350484,"journal":{"name":"World Journal of Engineering and Technology Research","volume":"455 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124315468","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}
This paper investigates transport system and sustainable improvement in North-central, Nigeria with specific reference to Abuja, Nasarawa and Niger State. Survey research device was utilized with questionnaire as main instruments applied for data collections which were dispensed to four hundred travellers carefully picked randomly making total of 1200 travellers that were studied. From demographic figures for each of the three zones, female travellers more than men, Self-employed travellers has the highest, between 25 and 40 years travelled most, Christian travellers are more than other religions, while travellers with at least degree certificate travelled most and the highest income is below minimum wage. Nevertheless, from the opinion about public transportation system, majority testify that fare is too costly, deficient bus service and inaccessibility or costly parking space, whereas safety and cleanliness is zero percent.
{"title":"The viability of service supply and travellers satisfaction in mass transit system in north-central Nigeria: The quality puzzle","authors":"Olumuyiwa Samson Aderinola, Ehizemhen Christopher Igibah, Bamitale Dorcas Oluyemi-Ayibiowu, Oluwaseun Adedapo Adetayo, Lucia Omolayo Agashua","doi":"10.53346/wjetr.2022.1.1.0025","DOIUrl":"https://doi.org/10.53346/wjetr.2022.1.1.0025","url":null,"abstract":"This paper investigates transport system and sustainable improvement in North-central, Nigeria with specific reference to Abuja, Nasarawa and Niger State. Survey research device was utilized with questionnaire as main instruments applied for data collections which were dispensed to four hundred travellers carefully picked randomly making total of 1200 travellers that were studied. From demographic figures for each of the three zones, female travellers more than men, Self-employed travellers has the highest, between 25 and 40 years travelled most, Christian travellers are more than other religions, while travellers with at least degree certificate travelled most and the highest income is below minimum wage. Nevertheless, from the opinion about public transportation system, majority testify that fare is too costly, deficient bus service and inaccessibility or costly parking space, whereas safety and cleanliness is zero percent.","PeriodicalId":350484,"journal":{"name":"World Journal of Engineering and Technology Research","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122592948","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}
The misuse of medical products can cause harm to the health of patients and other users. Many international standards are practiced in the medical product development industry to ensure quality and safety, including guides and models with various ways to engage the user in the development process. There are methods that can be performed at any stage of development, which hampers the project-planning phase. Nevertheless, there is a lack of information that helps companies select the most appropriate users, according to a particular profile or attribute. In order to demystify how users can be involved in the development of the product for health and using case studies in the literature as a basis, this research aims to present the recurrent activities that users perform when involved in development of medical devices. The main contribution of this word is the model of user tasks crossed with users characteristics developed.
{"title":"Who are the right users to be involved in the design process of health products","authors":"Gustavo Michelini, Carina Campese, Janaina Mascarenhas","doi":"10.53346/wjetr.2022.1.1.0056","DOIUrl":"https://doi.org/10.53346/wjetr.2022.1.1.0056","url":null,"abstract":"The misuse of medical products can cause harm to the health of patients and other users. Many international standards are practiced in the medical product development industry to ensure quality and safety, including guides and models with various ways to engage the user in the development process. There are methods that can be performed at any stage of development, which hampers the project-planning phase. Nevertheless, there is a lack of information that helps companies select the most appropriate users, according to a particular profile or attribute. In order to demystify how users can be involved in the development of the product for health and using case studies in the literature as a basis, this research aims to present the recurrent activities that users perform when involved in development of medical devices. The main contribution of this word is the model of user tasks crossed with users characteristics developed.","PeriodicalId":350484,"journal":{"name":"World Journal of Engineering and Technology Research","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126192167","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 : 2022-01-30DOI: 10.53346/wjetr.2022.1.1.0026
OC Okwonna
The study combines both simulation modeling and optimization of bitumen-palm kernel oil blend for austempering of cast iron and steel. Two independent factors namely austenitizing temperature (A) and holding time (H) were evaluated while five responses which includes ultimate tensile strength (u.t.s), hardness (h), impact strength (i), percentage elongation (e), percentage reduction in area (r.i.a) were evaluated. 3-D response surface and 2-D contour plots through response surface methods were used to estimate multi-response mathematical models. Desirability function approach provided by MINITAB 18 was used to determine the optimal settings of the response and factors after adequacy of the models to approximate the measured data had been established at 0.10 confidence level. From the result, optimum conditions for austenitizing temperature was 916.50C and 5 min while the predicted values of quenching hardness, ultimate tensile strength, impact strength, %elongation, %reduction in area were 1327.29MPa, 29.36J, 72.77%, 86.79% and 175.59HRC for 0.56%C-Steel; 1407.97MPa, 20.04J, 50.80%, 49.17% and 196.13 for 0.76%C-Steel; 1235.01MPa, 32.42J, 60.39%, 55.99% and 234.99HRC for ductile cast iron. Great improvement was seen in the steel performance after austempering process which gave rise to the conclusion that as the austempering time and holding time increases, that the mechanical properties of the steel were affected. Quenching of 0.56%C, 0.76%C-steel and ductile cast iron at the optimal settings using B-PKO saved one thousand naira (₦1000.00) showing 28.57% profit. The developed empirical models are recommended in some of the automobile and engineering industries during heat treatment operations so as to save time and energy.
{"title":"Simulation modeling and optimization of bitumen –palm kernel oil blend for austempering of cast iron and steel","authors":"OC Okwonna","doi":"10.53346/wjetr.2022.1.1.0026","DOIUrl":"https://doi.org/10.53346/wjetr.2022.1.1.0026","url":null,"abstract":"The study combines both simulation modeling and optimization of bitumen-palm kernel oil blend for austempering of cast iron and steel. Two independent factors namely austenitizing temperature (A) and holding time (H) were evaluated while five responses which includes ultimate tensile strength (u.t.s), hardness (h), impact strength (i), percentage elongation (e), percentage reduction in area (r.i.a) were evaluated. 3-D response surface and 2-D contour plots through response surface methods were used to estimate multi-response mathematical models. Desirability function approach provided by MINITAB 18 was used to determine the optimal settings of the response and factors after adequacy of the models to approximate the measured data had been established at 0.10 confidence level. From the result, optimum conditions for austenitizing temperature was 916.50C and 5 min while the predicted values of quenching hardness, ultimate tensile strength, impact strength, %elongation, %reduction in area were 1327.29MPa, 29.36J, 72.77%, 86.79% and 175.59HRC for 0.56%C-Steel; 1407.97MPa, 20.04J, 50.80%, 49.17% and 196.13 for 0.76%C-Steel; 1235.01MPa, 32.42J, 60.39%, 55.99% and 234.99HRC for ductile cast iron. Great improvement was seen in the steel performance after austempering process which gave rise to the conclusion that as the austempering time and holding time increases, that the mechanical properties of the steel were affected. Quenching of 0.56%C, 0.76%C-steel and ductile cast iron at the optimal settings using B-PKO saved one thousand naira (₦1000.00) showing 28.57% profit. The developed empirical models are recommended in some of the automobile and engineering industries during heat treatment operations so as to save time and energy.","PeriodicalId":350484,"journal":{"name":"World Journal of Engineering and Technology Research","volume":"1049 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123145838","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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