Pub Date : 2022-02-21DOI: 10.1109/ASET53988.2022.9734864
Osama Ahmed Mohamed, Rania Al Khattab, Eman Ahmed Ahmed
This paper presents the finding of a study aimed at evaluating sorptivity of sustainable mortars that use alkali-activated GGBS-fly blends as binders, without Ordinary Portland Cement. Sorptivity, which is a measure of matrix pore-system, is an important indicator of concrete durability. Three binder combinations were successfully activated under room temperature, without heating, namely, GGBS as sole binder, GGBS:fly ash ratio of 3:1, and equal amounts of GGBS and fly ash. The optimum combination of GGBS and fly ash is the one with GGBS:fly ash ratio of 3:1, which exhibited the lowest sorptivity of the three binder combinations when the molarity of the alkaline activator NaOH is 12M. Mortars with GGBS:fly ash ratio of 3:1 retained the lowest sorptivity over mortars that use GGBS as sole binder and the mix with equal amounts of GGBS and fly ash, after 7-, 28-, and 90-day of curing. Mixes prepared using 100% GGBS binder demonstrated decrease in sorptivity as NaOH concentration was increased from 10M to 16M, in increments of 2M. The optimum sodium silicate/sodium hydroxide ratio for mortars using 50% GGBS+50% fly ash as binder is 2.0, which resulted in lower sorptivity compared 1.5 and 2.5.
{"title":"Sorptivity of Mortar with Alkali-Activated Slag and Fly Ash Binders","authors":"Osama Ahmed Mohamed, Rania Al Khattab, Eman Ahmed Ahmed","doi":"10.1109/ASET53988.2022.9734864","DOIUrl":"https://doi.org/10.1109/ASET53988.2022.9734864","url":null,"abstract":"This paper presents the finding of a study aimed at evaluating sorptivity of sustainable mortars that use alkali-activated GGBS-fly blends as binders, without Ordinary Portland Cement. Sorptivity, which is a measure of matrix pore-system, is an important indicator of concrete durability. Three binder combinations were successfully activated under room temperature, without heating, namely, GGBS as sole binder, GGBS:fly ash ratio of 3:1, and equal amounts of GGBS and fly ash. The optimum combination of GGBS and fly ash is the one with GGBS:fly ash ratio of 3:1, which exhibited the lowest sorptivity of the three binder combinations when the molarity of the alkaline activator NaOH is 12M. Mortars with GGBS:fly ash ratio of 3:1 retained the lowest sorptivity over mortars that use GGBS as sole binder and the mix with equal amounts of GGBS and fly ash, after 7-, 28-, and 90-day of curing. Mixes prepared using 100% GGBS binder demonstrated decrease in sorptivity as NaOH concentration was increased from 10M to 16M, in increments of 2M. The optimum sodium silicate/sodium hydroxide ratio for mortars using 50% GGBS+50% fly ash as binder is 2.0, which resulted in lower sorptivity compared 1.5 and 2.5.","PeriodicalId":6832,"journal":{"name":"2022 Advances in Science and Engineering Technology International Conferences (ASET)","volume":"10 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2022-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79688937","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 : 2022-02-21DOI: 10.1109/ASET53988.2022.9734925
Mohammad Hossein Shokatpour, M. Alhuyi Nazari, Mamdouh El Haj Assad
Energy is required for wide variety of applications including industrial activities, transportation, heating etc. Regarding the issues raised due the consumption of fossil fuels such as emission of greenhouse gases, renewable energy utilization has been expanded in recent decades. Power generation is a key element in the energy systems of countries and significant parts of primary energy consumption is applied for this purpose. Renewable energy-based systems, e.g. solar systems, wind turbines and geothermal power plants are applicable for this purpose. In the present study, o multicriteria decision making approach, TOPSIS, is employed to prioritize conventional renewable energy systems for power generation in Iran. In this way, different criteria are considered to rank the technologies for power generation for the case study. The criteria are weighted on the basis of the questionnaire completed by the experts in this field. Results revealed that applying solar PV is the most preferable technology for power generation in utility-scale in Iran.
{"title":"Renewable Energy Technology Selection for Iran by Using Multi Criteria Decision Making","authors":"Mohammad Hossein Shokatpour, M. Alhuyi Nazari, Mamdouh El Haj Assad","doi":"10.1109/ASET53988.2022.9734925","DOIUrl":"https://doi.org/10.1109/ASET53988.2022.9734925","url":null,"abstract":"Energy is required for wide variety of applications including industrial activities, transportation, heating etc. Regarding the issues raised due the consumption of fossil fuels such as emission of greenhouse gases, renewable energy utilization has been expanded in recent decades. Power generation is a key element in the energy systems of countries and significant parts of primary energy consumption is applied for this purpose. Renewable energy-based systems, e.g. solar systems, wind turbines and geothermal power plants are applicable for this purpose. In the present study, o multicriteria decision making approach, TOPSIS, is employed to prioritize conventional renewable energy systems for power generation in Iran. In this way, different criteria are considered to rank the technologies for power generation for the case study. The criteria are weighted on the basis of the questionnaire completed by the experts in this field. Results revealed that applying solar PV is the most preferable technology for power generation in utility-scale in Iran.","PeriodicalId":6832,"journal":{"name":"2022 Advances in Science and Engineering Technology International Conferences (ASET)","volume":"51 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2022-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79134334","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 : 2022-02-21DOI: 10.1109/ASET53988.2022.9735000
N. Kumar, Na’il Saleh, Arun Kumar, M. Verma, P. Ranjan
We have investigated the spin-dependent structural, electronic and localized-induced magnetic moment in an atomic layer of binary chalcogenide semiconductors, Tungsten sulphide/selenide (WX2, where X= S, Se) using first-principle calculations. It was observed that the addition of fluorine to the WX2 monolayer lattice reduces the bandgap of the material and induced a magnetic moment of ~1 Bohr magneton. Moreover, the reasons behind this magnetic transition from non-magnetic semiconductors to magnetic semiconductors were investigated and discussed. The calculated binding energy reveals that the pristine monolayer is more stable than the fluorine doped WX2 sheet. Also, intermittent energy levels were created due to the fluorine atoms and resulted in p-type acceptor semiconductor behaviour in spin up and n-type donor behaviour in spin-down of WX2 monolayer. It was observed that the unparalleled behaviour of spin can be tuned to suitable applications such as memory devices and spintronics.
{"title":"Investigation of Atomic Layer Futuristic Memory Devices of Binary Chalcogenides WX2 (X = S and Se): First-Principles Study","authors":"N. Kumar, Na’il Saleh, Arun Kumar, M. Verma, P. Ranjan","doi":"10.1109/ASET53988.2022.9735000","DOIUrl":"https://doi.org/10.1109/ASET53988.2022.9735000","url":null,"abstract":"We have investigated the spin-dependent structural, electronic and localized-induced magnetic moment in an atomic layer of binary chalcogenide semiconductors, Tungsten sulphide/selenide (WX2, where X= S, Se) using first-principle calculations. It was observed that the addition of fluorine to the WX2 monolayer lattice reduces the bandgap of the material and induced a magnetic moment of ~1 Bohr magneton. Moreover, the reasons behind this magnetic transition from non-magnetic semiconductors to magnetic semiconductors were investigated and discussed. The calculated binding energy reveals that the pristine monolayer is more stable than the fluorine doped WX2 sheet. Also, intermittent energy levels were created due to the fluorine atoms and resulted in p-type acceptor semiconductor behaviour in spin up and n-type donor behaviour in spin-down of WX2 monolayer. It was observed that the unparalleled behaviour of spin can be tuned to suitable applications such as memory devices and spintronics.","PeriodicalId":6832,"journal":{"name":"2022 Advances in Science and Engineering Technology International Conferences (ASET)","volume":"4 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2022-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79218295","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 : 2022-02-21DOI: 10.1109/ASET53988.2022.9734934
Haitham A. Badrawi, Hisham Y. Makahleh, Rami A. Haweileh
The impacts of using Ground Granulated Blast Furnace Slag (GGBFS) and fly ash as a replacement to Ordinary Portland Cement (OPC) are evaluated. A total of 120 concrete cubic and cylindrical samples were casted and tested for four different binder compositions. Compressive strength testing conducted on cubes and cylinders at various ages revealed that incorporation of fly ash as binder reduces the compressive strength at various ages. In addition, it is also observed that geopolymer concrete provides late strength gain which is a major drawback of the usage of such concrete. Furthermore, it was noted that GGBFS- and fly ash- based concrete gain compressive strength at later ages compared to conventional concrete. This is due to the late activation process. On the other hand, durability testing of geopolymer concrete, represented by rapid chloride penetration test (RCPT), suggests that replacing OPC with GGBFS and fly ash in concrete provides massive improvements in durability at the various testing ages. In contrast, adding further fly ash reduces overall durability by increasing the water absorbed and water penetration depth. Finally, it is concluded that environment friendly materials such as GGBFS and fly ash can serve as appropriate alternatives to OPC in the binding material of concrete mixes.
{"title":"Compressive Strength and Durability of Geopolymer Concrete","authors":"Haitham A. Badrawi, Hisham Y. Makahleh, Rami A. Haweileh","doi":"10.1109/ASET53988.2022.9734934","DOIUrl":"https://doi.org/10.1109/ASET53988.2022.9734934","url":null,"abstract":"The impacts of using Ground Granulated Blast Furnace Slag (GGBFS) and fly ash as a replacement to Ordinary Portland Cement (OPC) are evaluated. A total of 120 concrete cubic and cylindrical samples were casted and tested for four different binder compositions. Compressive strength testing conducted on cubes and cylinders at various ages revealed that incorporation of fly ash as binder reduces the compressive strength at various ages. In addition, it is also observed that geopolymer concrete provides late strength gain which is a major drawback of the usage of such concrete. Furthermore, it was noted that GGBFS- and fly ash- based concrete gain compressive strength at later ages compared to conventional concrete. This is due to the late activation process. On the other hand, durability testing of geopolymer concrete, represented by rapid chloride penetration test (RCPT), suggests that replacing OPC with GGBFS and fly ash in concrete provides massive improvements in durability at the various testing ages. In contrast, adding further fly ash reduces overall durability by increasing the water absorbed and water penetration depth. Finally, it is concluded that environment friendly materials such as GGBFS and fly ash can serve as appropriate alternatives to OPC in the binding material of concrete mixes.","PeriodicalId":6832,"journal":{"name":"2022 Advances in Science and Engineering Technology International Conferences (ASET)","volume":"303 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2022-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79715444","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 : 2022-02-21DOI: 10.1109/ASET53988.2022.9763100
K. AlHarmoodi, Amir Hussain Idrisi, Abdel Hamid Ismail Mourad, B. Abu-Jdayil
As we approach the twenty-first century, the aviation industry is seen to flourish due to flying being considered to be the preferred way of travel, whether being across states or countries. With such a demand, there is an equally parallel demand for the production of aircraft components. In this research, the focus of the study was on the recycling of carbon fiber composites obtained from STRATA company. This study utilized the cut-off/waste material produced during the manufacturing of aircraft components. The cut-offs were reduced to powder form using a conventional face milling machine in three different sizes (90, 150, 250µm). Four different wt% (10%, 20%, 30%, 40%) of the recycled powder was utilized to fabricate vinyl ester composites. Results show that the tensile strength of all composites increased upto 20 wt% of the reinforcement and then reduced drastically with further addition of reinforcement for all particle sizes.
{"title":"Investigation on mechanical recycling of carbon fiber/vinyl ester composites","authors":"K. AlHarmoodi, Amir Hussain Idrisi, Abdel Hamid Ismail Mourad, B. Abu-Jdayil","doi":"10.1109/ASET53988.2022.9763100","DOIUrl":"https://doi.org/10.1109/ASET53988.2022.9763100","url":null,"abstract":"As we approach the twenty-first century, the aviation industry is seen to flourish due to flying being considered to be the preferred way of travel, whether being across states or countries. With such a demand, there is an equally parallel demand for the production of aircraft components. In this research, the focus of the study was on the recycling of carbon fiber composites obtained from STRATA company. This study utilized the cut-off/waste material produced during the manufacturing of aircraft components. The cut-offs were reduced to powder form using a conventional face milling machine in three different sizes (90, 150, 250µm). Four different wt% (10%, 20%, 30%, 40%) of the recycled powder was utilized to fabricate vinyl ester composites. Results show that the tensile strength of all composites increased upto 20 wt% of the reinforcement and then reduced drastically with further addition of reinforcement for all particle sizes.","PeriodicalId":6832,"journal":{"name":"2022 Advances in Science and Engineering Technology International Conferences (ASET)","volume":"30 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2022-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78971288","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 : 2022-02-21DOI: 10.1109/ASET53988.2022.9734955
Kussai Alraini, Helal Ezzat, W. Zeiada, G. Al-Khateeb
A problem that emerges from the abundant use of plastic is the disposal of plastic wastes. In this paper, Polyethylene Terephthalate (PET) plastic waste from water bottles was utilized to modify asphalt at two different dosages, 2% and 4%. The processed plastic waste was added to a 60/70 penetration grade asphalt binder. The neat and modified asphalt binders were tested for performance grade using the dynamic shear rheometer (DSR). The results provided by the DSR tests were used to simulate the performance of the plastic waste modified asphalt pavement using AASHTOWare Pavement ME Design software. To predict the field performance, two sections were proposed: a thin 3-inch section with light traffic and a thick 6-inch section with heavy traffic, both under Sharjah’s climate conditions. At 90% reliability, AASHTOWare simulation runs showed that the addition of 4% PET plastic increased the bottom-up fatigue resistance by 2.75 years in the 6-inch section. The 3-in pavement did not fail during the 20-year design life for permanent deformation but improved rut resistance. In the 6-inch pavement, the control binder had a service life of 8.92 years. The addition of 2% PET increased the service life due to permanent deformation by 1 year. However, the addition of 4% increased the service life by 8 years. The addition of plastics as an asphalt binder modifier may help solve plastic disposal problems and minimize the negative economic and environmental impact.
塑料的大量使用带来的一个问题是塑料废物的处理。本论文以瓶装水的聚对苯二甲酸乙二醇酯(PET)废塑料为原料，以2%和4%的掺量对沥青进行改性。将处理后的废塑料加入60/70渗透等级的沥青粘合剂中。采用动态剪切流变仪(DSR)对纯沥青和改性沥青粘结剂进行了性能等级测试。利用DSR试验结果，利用AASHTOWare pavement ME Design软件对塑料垃圾改性沥青路面进行了性能模拟。为了预测现场性能，在沙迦的气候条件下，提出了两个路段:一个3英寸的薄路段，交通流量小，一个6英寸的厚路段，交通流量大。在90%的可靠性下，AASHTOWare模拟运行表明，添加4% PET塑料可使6英寸截面的自下而上抗疲劳性能提高2.75年。3英寸路面在20年的设计寿命期间没有因永久变形而失效，但提高了抗车辙性。在6英寸路面上，控制粘结剂的使用寿命为8.92年。由于永久变形，添加2% PET使使用寿命增加了1年。然而，添加4%使使用寿命增加了8年。添加塑料作为沥青粘合剂改性剂可以帮助解决塑料处理问题，并最大限度地减少对经济和环境的负面影响。
{"title":"Investigating the Effect of Polyethylene Terephthalate Recycled from Waste Plastics bottles on Asphalt Binder Under UAE’s Climate Conditions","authors":"Kussai Alraini, Helal Ezzat, W. Zeiada, G. Al-Khateeb","doi":"10.1109/ASET53988.2022.9734955","DOIUrl":"https://doi.org/10.1109/ASET53988.2022.9734955","url":null,"abstract":"A problem that emerges from the abundant use of plastic is the disposal of plastic wastes. In this paper, Polyethylene Terephthalate (PET) plastic waste from water bottles was utilized to modify asphalt at two different dosages, 2% and 4%. The processed plastic waste was added to a 60/70 penetration grade asphalt binder. The neat and modified asphalt binders were tested for performance grade using the dynamic shear rheometer (DSR). The results provided by the DSR tests were used to simulate the performance of the plastic waste modified asphalt pavement using AASHTOWare Pavement ME Design software. To predict the field performance, two sections were proposed: a thin 3-inch section with light traffic and a thick 6-inch section with heavy traffic, both under Sharjah’s climate conditions. At 90% reliability, AASHTOWare simulation runs showed that the addition of 4% PET plastic increased the bottom-up fatigue resistance by 2.75 years in the 6-inch section. The 3-in pavement did not fail during the 20-year design life for permanent deformation but improved rut resistance. In the 6-inch pavement, the control binder had a service life of 8.92 years. The addition of 2% PET increased the service life due to permanent deformation by 1 year. However, the addition of 4% increased the service life by 8 years. The addition of plastics as an asphalt binder modifier may help solve plastic disposal problems and minimize the negative economic and environmental impact.","PeriodicalId":6832,"journal":{"name":"2022 Advances in Science and Engineering Technology International Conferences (ASET)","volume":"26 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2022-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80842303","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 : 2022-02-21DOI: 10.1109/ASET53988.2022.9734983
K. Nepal, W. Khan, Awais Qasir, F. Majeed, Saleimah Alyammahi, Meriesha Fonseka, Ramzan Asmatulu
Water scarcity has become a challenging issue since it is extremely essential in our daily life. Lack of pure water in developing countries has marred human life and created various problems related to health, such as diarrhea, cholera, typhoid, dysentery, malaria, jaundice, and waterborne disease; therefore, it is very important that water must be pure and available in abundance amount in all parts of the world. New developments in filtration technology have reinvigorated interest in engineered nanosized materials such as electrospun nanofiber membrane for providing potable water at much lower cost and with minimum investment. Membrane technology has been in use for several decades and has played a crucial role in water treatment. Polymer nanofibers produced via an electrospinning process is an ideal method of fabricating electrospun nanofiber membrane for water filtration. In this research, Nanofibers were produced from two polymers such as polyacrylonitrile (PAN) and polyethylene glycol (PEG), while Dimethylformamide (DMF) was used as a solvent. The electrospun nanofibrous membranes (ENMs) thus produced via electrospinning possess super hydrophilic features and can be used for water filtration. Different water samples such as pond water, jet cutter water, tap water, deionized (DI) water, and carbon black (CB) deionized water were used in this experiment. The water samples were tested for turbidity, total dissolved solids (TDS), electrical conductivity (EC), pH, and refractive index.
{"title":"Designing and Manufacturing of Portable Nanofiber Systems for Continuous Water Supplies in Water-Scarce Locations","authors":"K. Nepal, W. Khan, Awais Qasir, F. Majeed, Saleimah Alyammahi, Meriesha Fonseka, Ramzan Asmatulu","doi":"10.1109/ASET53988.2022.9734983","DOIUrl":"https://doi.org/10.1109/ASET53988.2022.9734983","url":null,"abstract":"Water scarcity has become a challenging issue since it is extremely essential in our daily life. Lack of pure water in developing countries has marred human life and created various problems related to health, such as diarrhea, cholera, typhoid, dysentery, malaria, jaundice, and waterborne disease; therefore, it is very important that water must be pure and available in abundance amount in all parts of the world. New developments in filtration technology have reinvigorated interest in engineered nanosized materials such as electrospun nanofiber membrane for providing potable water at much lower cost and with minimum investment. Membrane technology has been in use for several decades and has played a crucial role in water treatment. Polymer nanofibers produced via an electrospinning process is an ideal method of fabricating electrospun nanofiber membrane for water filtration. In this research, Nanofibers were produced from two polymers such as polyacrylonitrile (PAN) and polyethylene glycol (PEG), while Dimethylformamide (DMF) was used as a solvent. The electrospun nanofibrous membranes (ENMs) thus produced via electrospinning possess super hydrophilic features and can be used for water filtration. Different water samples such as pond water, jet cutter water, tap water, deionized (DI) water, and carbon black (CB) deionized water were used in this experiment. The water samples were tested for turbidity, total dissolved solids (TDS), electrical conductivity (EC), pH, and refractive index.","PeriodicalId":6832,"journal":{"name":"2022 Advances in Science and Engineering Technology International Conferences (ASET)","volume":"26 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2022-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75513414","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 : 2022-02-21DOI: 10.1109/ASET53988.2022.9734984
A. Alnoman
This paper presents a framework for smart campus implementation which comprises three main modules, namely, enabling technologies, smart services, and student-centered learning. First, smart campus is introduced in light of state-of-the-art technological advancements such as Internet of Things, network connectivity, and artificial intelligence. With the help of these technologies, a variety of smart services can be attained such as student performance prediction, smart management, and smart health. Besides, since the main goal of smart campus is to enhance the learning experience of students, the effectiveness of smart campus is discussed from the student-centered learning perspec-tive. Some of the existing challenges that face the fulfillment of smart campus are also highlighted especially data privacy.
{"title":"A Framework for Technology-based Student-centered Learning in Smart Campus","authors":"A. Alnoman","doi":"10.1109/ASET53988.2022.9734984","DOIUrl":"https://doi.org/10.1109/ASET53988.2022.9734984","url":null,"abstract":"This paper presents a framework for smart campus implementation which comprises three main modules, namely, enabling technologies, smart services, and student-centered learning. First, smart campus is introduced in light of state-of-the-art technological advancements such as Internet of Things, network connectivity, and artificial intelligence. With the help of these technologies, a variety of smart services can be attained such as student performance prediction, smart management, and smart health. Besides, since the main goal of smart campus is to enhance the learning experience of students, the effectiveness of smart campus is discussed from the student-centered learning perspec-tive. Some of the existing challenges that face the fulfillment of smart campus are also highlighted especially data privacy.","PeriodicalId":6832,"journal":{"name":"2022 Advances in Science and Engineering Technology International Conferences (ASET)","volume":"271 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2022-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79903373","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 : 2022-02-21DOI: 10.1109/ASET53988.2022.9734308
Aaisha Rashid Al-Abri, Noora Ibrahim Al-Khoori, Mezna Salem Al-Marri, Asma Ahmed Al-Hamed, P. Sreekumar
CubeSats are small satellites which are used to conduct space research at a fraction of the cost of a fully built satellite.is In order to test CubeSat, a testing environment similar to space is to be developed, which is usually provided by Helmholtz cage. This work presents the design of a Helmholtz cage to provide a dynamic, 3-axis uniform magnetic field and create an environment similar to the geomagnetic field a satellite would experience on-orbit. The design of the CubeSat consists of ADCS (attitude determination and control subsystem) which is a crucial subsystem of a spacecraft. The ADCS dependent upon sensing the geomagnetic field in space via magnetometer and/or use the geomagnetic field to torque the spacecraft via torque coils. The 2m*2m*2m Helmholtz cage deigned in this work is used to test the magnetometer and the magnetorquer of the ADCS. The mechanical design of the Helmholtz cage is designed using Auto Desk, the number of turns of the copper coil and its sizing is determined using Matlab based simulation studies.
{"title":"Helmholtz Cage for Attitude Testing Of CubeSat","authors":"Aaisha Rashid Al-Abri, Noora Ibrahim Al-Khoori, Mezna Salem Al-Marri, Asma Ahmed Al-Hamed, P. Sreekumar","doi":"10.1109/ASET53988.2022.9734308","DOIUrl":"https://doi.org/10.1109/ASET53988.2022.9734308","url":null,"abstract":"CubeSats are small satellites which are used to conduct space research at a fraction of the cost of a fully built satellite.is In order to test CubeSat, a testing environment similar to space is to be developed, which is usually provided by Helmholtz cage. This work presents the design of a Helmholtz cage to provide a dynamic, 3-axis uniform magnetic field and create an environment similar to the geomagnetic field a satellite would experience on-orbit. The design of the CubeSat consists of ADCS (attitude determination and control subsystem) which is a crucial subsystem of a spacecraft. The ADCS dependent upon sensing the geomagnetic field in space via magnetometer and/or use the geomagnetic field to torque the spacecraft via torque coils. The 2m*2m*2m Helmholtz cage deigned in this work is used to test the magnetometer and the magnetorquer of the ADCS. The mechanical design of the Helmholtz cage is designed using Auto Desk, the number of turns of the copper coil and its sizing is determined using Matlab based simulation studies.","PeriodicalId":6832,"journal":{"name":"2022 Advances in Science and Engineering Technology International Conferences (ASET)","volume":"33 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2022-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80111145","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 : 2022-02-21DOI: 10.1109/ASET53988.2022.9734896
O. Mughieda, A. Alzo’ubi, M. Kewalramani
In order to use Abu Dhabi sand for pavement base courses, subbase courses, subgrades, and as a foundation soil, it must possess special shear strength characteristics. The stabilization of this kind of sand is a major geotechnical task. The soil in this study was improved by mixing geofiber and fines with sand. Large direct shear tests were performed on three different groups of soil to determine the shear strength characteristics of the stabilized soil. The three types of soil studied were: (1) Abu Dhabi sand with different geofiber amount, (2) Abu Dhabi sand with different fines content, and (3) Abu Dhabi sand with different fines and geofiber content. Testing was performed on sand with a water content of 7%, geofiber contents of 0% (no additives), 0.1%, 0.2%, and 0.4%, as well as fines contents of 10%, 20%, and 30%. Results of experimental studies can be seen in Figures (6)-(8). The best results of shear strength were obtained when 20% of the fines content and 0.4% of the geofiber content were added. The angle of internal friction increased from 34o if fines or geofiber were not included to 45o with 20% fines content and 0.4% geofiber content
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