Pub Date : 2018-10-01DOI: 10.1109/ICOASE.2018.8548885
R. M. Salah, J. Cecil, Diler Atrushi
Currently, higher education systems in the Middle East and North Africa region face several challenges in terms of developing, learning, and teaching. For example, the higher education system in Iraq, which is the same as in other countries as a whole, has not adapted instructional technology into the education system efficiently. Nowadays, several technologies have been implemented (e.g. Remote Experimentation Labs and Virtual Reality) to serve the higher education systems and their teaching abilities, especially in Sciences and Engineering disciplinary. This paper presents a Remote Experimentation Labs project, named "Building a Remote Experimentation Network for serving higher education teachers and students in Iraq (REXNet)", that is implemented to serve students and teachers of Iraqi universities. It is a collaborative work among three universities (i.e. Duhok University, Zakho University, Duhok Polytechnic University) in Kurdistan Region-Iraq and Oklahoma State University (OSU) in United States, and supported by the International Research & Exchanges Board organization for creating Virtual Learning Environments (Cyberlearning Environment) for enhancing students learning experience and pedagogical by using Remote Experimentation Labs. In general, the project aimed to include several modules for students from those universities that can be running via the Internet, and helping to increase the collaborative work among researchers in Kurdistan region and Iraq.
{"title":"Collaborative Remote Laboratories for Serving Sciences and Engineering Education in Iraq: Rexnet Project","authors":"R. M. Salah, J. Cecil, Diler Atrushi","doi":"10.1109/ICOASE.2018.8548885","DOIUrl":"https://doi.org/10.1109/ICOASE.2018.8548885","url":null,"abstract":"Currently, higher education systems in the Middle East and North Africa region face several challenges in terms of developing, learning, and teaching. For example, the higher education system in Iraq, which is the same as in other countries as a whole, has not adapted instructional technology into the education system efficiently. Nowadays, several technologies have been implemented (e.g. Remote Experimentation Labs and Virtual Reality) to serve the higher education systems and their teaching abilities, especially in Sciences and Engineering disciplinary. This paper presents a Remote Experimentation Labs project, named \"Building a Remote Experimentation Network for serving higher education teachers and students in Iraq (REXNet)\", that is implemented to serve students and teachers of Iraqi universities. It is a collaborative work among three universities (i.e. Duhok University, Zakho University, Duhok Polytechnic University) in Kurdistan Region-Iraq and Oklahoma State University (OSU) in United States, and supported by the International Research & Exchanges Board organization for creating Virtual Learning Environments (Cyberlearning Environment) for enhancing students learning experience and pedagogical by using Remote Experimentation Labs. In general, the project aimed to include several modules for students from those universities that can be running via the Internet, and helping to increase the collaborative work among researchers in Kurdistan region and Iraq.","PeriodicalId":144020,"journal":{"name":"2018 International Conference on Advanced Science and Engineering (ICOASE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131936427","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 : 2018-10-01DOI: 10.1109/ICOASE.2018.8548913
Safaa S. Omran, A. Al-Hilali
The iris recognition is the best biometric method that used today for distinguish between users. The iris recognition system is providing to distinguish between human based on unique features located inside irises. Ridge-Energy-Direction (RED) algorithm is used for extracting iris features from the rectangle iris template. This research presents comparative between four different ways of choosing iris region of human or identifications and tries to locate the best way among them. These ways are tested on two different databases (CASIA V1 and CASIA Interval). A full design of iris recognition system is made from segmentation, normalization, features extraction, and matching to test these rectangle iris templates. This paper recommends choosing the iris region that near to the pupil likes quarter iris region template, since this iris region template has small sizes among other templates in terms of pixels and gives 100% accuracy in identification and verification.
{"title":"Comparative Study Between Different Rectangle Iris Templates","authors":"Safaa S. Omran, A. Al-Hilali","doi":"10.1109/ICOASE.2018.8548913","DOIUrl":"https://doi.org/10.1109/ICOASE.2018.8548913","url":null,"abstract":"The iris recognition is the best biometric method that used today for distinguish between users. The iris recognition system is providing to distinguish between human based on unique features located inside irises. Ridge-Energy-Direction (RED) algorithm is used for extracting iris features from the rectangle iris template. This research presents comparative between four different ways of choosing iris region of human or identifications and tries to locate the best way among them. These ways are tested on two different databases (CASIA V1 and CASIA Interval). A full design of iris recognition system is made from segmentation, normalization, features extraction, and matching to test these rectangle iris templates. This paper recommends choosing the iris region that near to the pupil likes quarter iris region template, since this iris region template has small sizes among other templates in terms of pixels and gives 100% accuracy in identification and verification.","PeriodicalId":144020,"journal":{"name":"2018 International Conference on Advanced Science and Engineering (ICOASE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128881520","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 : 2018-10-01DOI: 10.1109/ICOASE.2018.8548910
A. Abdulqader, Yaser Ahmed Ali
The goal of this paper is to enhance the Directivity in Microstrip Antenna Array by adding Reflector Surface plane in ground plane. The Microstrip Antenna (MSA) is an antenna that is widely used in microwave waves which has many advantages, however, it represents a low built-in directivity. The suggested antenna array is made by using metamaterial reflecting surface to get the maximum directivity and high gain. In this research, a MSA is designed at 2.1 GHz and maximum directivity and gain are studied. A coaxial probe feeding technique is adopted to feed the antenna array. CST (Computer Simulation Technology) simulation of the suggested single and array antenna shows enhanced the gain, directivity and return loss at the center frequency of 2.1 GHz. At single element antenna, the gain is enhanced from 3.3225 to 6.462db and the directivity from 3.310 to 6.462dbi. Improvement in the performance of the design is achieved by using two elements antenna approach. Further improvement achieved in the work of the design by using four elements antenna approach.
{"title":"Microstrip Array Antenna Design with Directivity Enhancement Using Reflector Surface","authors":"A. Abdulqader, Yaser Ahmed Ali","doi":"10.1109/ICOASE.2018.8548910","DOIUrl":"https://doi.org/10.1109/ICOASE.2018.8548910","url":null,"abstract":"The goal of this paper is to enhance the Directivity in Microstrip Antenna Array by adding Reflector Surface plane in ground plane. The Microstrip Antenna (MSA) is an antenna that is widely used in microwave waves which has many advantages, however, it represents a low built-in directivity. The suggested antenna array is made by using metamaterial reflecting surface to get the maximum directivity and high gain. In this research, a MSA is designed at 2.1 GHz and maximum directivity and gain are studied. A coaxial probe feeding technique is adopted to feed the antenna array. CST (Computer Simulation Technology) simulation of the suggested single and array antenna shows enhanced the gain, directivity and return loss at the center frequency of 2.1 GHz. At single element antenna, the gain is enhanced from 3.3225 to 6.462db and the directivity from 3.310 to 6.462dbi. Improvement in the performance of the design is achieved by using two elements antenna approach. Further improvement achieved in the work of the design by using four elements antenna approach.","PeriodicalId":144020,"journal":{"name":"2018 International Conference on Advanced Science and Engineering (ICOASE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131144814","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 : 2018-10-01DOI: 10.1109/ICOASE.2018.8548785
Mohammed A. M.Sadeeq, Subhi R. M. Zeebaree, R. Qashi, S. H. Ahmed, Karwan Jacksi
Internet of Things (IoT) is a huge number of objects which communicate over a network or the Internet. These objects are a combination of electronics, sensors, and a software to control the way of working other parts of the object. Each object generates and collects data from its environment using sensors and transfers them to other objects or a central database through a channel. Keeping this generated data and its transformation is one of the biggest challenges in IoT today and it is one of the biggest concerns of all organizations that they use the IoT technology. In this paper, the most crucial researches related to security in the IoT field have been reviewed and discussed while taking account of the great power of the Quantum Computers. Significant attributes of these studies are compared. IoT security ranges from the software layer security, board and chip, vulnerable cryptography algorithm, protocol and network security, social engineering, malware like (viruses, ransomware, trojan horses). Due to a variety of IoT devices and the rapid emergence of new devices, it is difficult to measure the security of IoT systems and identify risks and vulnerabilities.
{"title":"Internet of Things Security: A Survey","authors":"Mohammed A. M.Sadeeq, Subhi R. M. Zeebaree, R. Qashi, S. H. Ahmed, Karwan Jacksi","doi":"10.1109/ICOASE.2018.8548785","DOIUrl":"https://doi.org/10.1109/ICOASE.2018.8548785","url":null,"abstract":"Internet of Things (IoT) is a huge number of objects which communicate over a network or the Internet. These objects are a combination of electronics, sensors, and a software to control the way of working other parts of the object. Each object generates and collects data from its environment using sensors and transfers them to other objects or a central database through a channel. Keeping this generated data and its transformation is one of the biggest challenges in IoT today and it is one of the biggest concerns of all organizations that they use the IoT technology. In this paper, the most crucial researches related to security in the IoT field have been reviewed and discussed while taking account of the great power of the Quantum Computers. Significant attributes of these studies are compared. IoT security ranges from the software layer security, board and chip, vulnerable cryptography algorithm, protocol and network security, social engineering, malware like (viruses, ransomware, trojan horses). Due to a variety of IoT devices and the rapid emergence of new devices, it is difficult to measure the security of IoT systems and identify risks and vulnerabilities.","PeriodicalId":144020,"journal":{"name":"2018 International Conference on Advanced Science and Engineering (ICOASE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132918778","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 : 2018-10-01DOI: 10.1109/ICOASE.2018.8548843
Rafalyasen Al-asadi, Saad Talib Hasson
Emergency department (ED) represents a crucial and suitable for most patients' emergency cases at any time. It is extremely associated health services dedicated mostly to treat the arriving patient's with uncertain illnesses and without previous appointment. Patient flow sequences represent a very complex process due to the different uncertain requirements and different possible paths that patients may guide to follow to complete his/her treatment. This study aims to maximize the patient's throughput, minimize their waiting times and optimize the resources utilization. The methodology that followed in this study is to estimate the optimal required ED staff's number, which involves nurses, doctors, and receptionist, lab and x-ray technician. Patients were modeled as agents having an ability to interact with others and with staffs and to select whether to be patience and wait in queue then stay in the system or decide to leave at any stage of the treatment process. The simulation results is implemented according to the real collected data and the managers experiences about the averages of arrival and service rates with flow sequence probabilities. Waiting and idle times for the patients and staffs showed a good indication about the quality of services.
{"title":"Modeling the Healthcare Services in Hilla Emergency Department","authors":"Rafalyasen Al-asadi, Saad Talib Hasson","doi":"10.1109/ICOASE.2018.8548843","DOIUrl":"https://doi.org/10.1109/ICOASE.2018.8548843","url":null,"abstract":"Emergency department (ED) represents a crucial and suitable for most patients' emergency cases at any time. It is extremely associated health services dedicated mostly to treat the arriving patient's with uncertain illnesses and without previous appointment. Patient flow sequences represent a very complex process due to the different uncertain requirements and different possible paths that patients may guide to follow to complete his/her treatment. This study aims to maximize the patient's throughput, minimize their waiting times and optimize the resources utilization. The methodology that followed in this study is to estimate the optimal required ED staff's number, which involves nurses, doctors, and receptionist, lab and x-ray technician. Patients were modeled as agents having an ability to interact with others and with staffs and to select whether to be patience and wait in queue then stay in the system or decide to leave at any stage of the treatment process. The simulation results is implemented according to the real collected data and the managers experiences about the averages of arrival and service rates with flow sequence probabilities. Waiting and idle times for the patients and staffs showed a good indication about the quality of services.","PeriodicalId":144020,"journal":{"name":"2018 International Conference on Advanced Science and Engineering (ICOASE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133003888","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 : 2018-10-01DOI: 10.1109/ICOASE.2018.8548857
Fatima Nadhim Ameen, Ziad Saeed Mohammed, A. Siddiq
Many vehicle tracking systems are based on Global Positioning System (GPS) and Global System for Mobile communications (GSM) due to the wide areas covered by these services. In these systems, the GPS coordinates of a moving vehicle is encapsulated in an SMS and transmitted to the monitoring server. In this paper, a GPS-GSM based system is designed and implemented to economically track vehicles moving over wide geographical areas. A scheme is proposed to reduce the number and cost of the used SMS messages. Performance evaluation under hypothetical and practical test cases showed the capability of the proposed system to achieve significant cost reduction. The proposed system also provides a trade-off between cost reduction and tracking accuracy. This enables the designer to select suitable system parameter values to minimize the cost for a given level of tracking accuracy.
{"title":"Cost Minimization of GPS-GSM Based Vehicle Tracking System","authors":"Fatima Nadhim Ameen, Ziad Saeed Mohammed, A. Siddiq","doi":"10.1109/ICOASE.2018.8548857","DOIUrl":"https://doi.org/10.1109/ICOASE.2018.8548857","url":null,"abstract":"Many vehicle tracking systems are based on Global Positioning System (GPS) and Global System for Mobile communications (GSM) due to the wide areas covered by these services. In these systems, the GPS coordinates of a moving vehicle is encapsulated in an SMS and transmitted to the monitoring server. In this paper, a GPS-GSM based system is designed and implemented to economically track vehicles moving over wide geographical areas. A scheme is proposed to reduce the number and cost of the used SMS messages. Performance evaluation under hypothetical and practical test cases showed the capability of the proposed system to achieve significant cost reduction. The proposed system also provides a trade-off between cost reduction and tracking accuracy. This enables the designer to select suitable system parameter values to minimize the cost for a given level of tracking accuracy.","PeriodicalId":144020,"journal":{"name":"2018 International Conference on Advanced Science and Engineering (ICOASE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134640026","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 : 2018-10-01DOI: 10.1109/ICOASE.2018.8548836
D. Zeebaree, H. Haron, A. Abdulazeez
Gene expression profiles could be generated in large quantities by utilizing microarray techniques. Currently, the task of diagnosing diseases relies on gene expression data. One of the techniques which helps in this task is by utilizing deep learning algorithms. Such algorithms are effective in the identification and classification of informative genes. These genes may subsequently be used in predicting testing samples’ classes. In cancer identification, the microarray data typically possesses minimal samples number with a huge feature collection size which are hailing from gene expression data. Lately, applications of deep learning algorithms are gaining much attention to solve various challenges in artificial intelligence field. In the present study, we investigated a deep learning algorithm based on the convolutional neural network (CNN), for classification of microarray data. In comparison to similar techniques such as Vector Machine Recursive Feature Elimination and improved Random Forest (mSVM-RFE-iRF and varSeIRF), CNN showed that not all the data have superior performance. Most of experimental results on cancer datasets indicated that CNN is superior in terms of accuracy and minimizing gene in classifying cancer comparing with hybrid mSVM-RFE-iRF.
{"title":"Gene Selection and Classification of Microarray Data Using Convolutional Neural Network","authors":"D. Zeebaree, H. Haron, A. Abdulazeez","doi":"10.1109/ICOASE.2018.8548836","DOIUrl":"https://doi.org/10.1109/ICOASE.2018.8548836","url":null,"abstract":"Gene expression profiles could be generated in large quantities by utilizing microarray techniques. Currently, the task of diagnosing diseases relies on gene expression data. One of the techniques which helps in this task is by utilizing deep learning algorithms. Such algorithms are effective in the identification and classification of informative genes. These genes may subsequently be used in predicting testing samples’ classes. In cancer identification, the microarray data typically possesses minimal samples number with a huge feature collection size which are hailing from gene expression data. Lately, applications of deep learning algorithms are gaining much attention to solve various challenges in artificial intelligence field. In the present study, we investigated a deep learning algorithm based on the convolutional neural network (CNN), for classification of microarray data. In comparison to similar techniques such as Vector Machine Recursive Feature Elimination and improved Random Forest (mSVM-RFE-iRF and varSeIRF), CNN showed that not all the data have superior performance. Most of experimental results on cancer datasets indicated that CNN is superior in terms of accuracy and minimizing gene in classifying cancer comparing with hybrid mSVM-RFE-iRF.","PeriodicalId":144020,"journal":{"name":"2018 International Conference on Advanced Science and Engineering (ICOASE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132481711","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 : 2018-10-01DOI: 10.1109/ICOASE.2018.8548830
S. Sadkhan, Dhilal M. Reda
The purpose of this research is to propose a new mathematical model, designed to evaluate the security of cryptosystems. This model is a mixture of ideas from two basic mathematical theories, information theory and game theory. The role of information theory is assigning the model with security criteria of the cryptosystems. The role of game theory was to produce the value of the game which is representing the outcome of these criteria, which finally refers to cryptosystem’s security. The proposed model support an accurate and mathematical way to evaluate the security of cryptosystems by unifying the criteria resulted from information theory and produce a unique reasonable value.
{"title":"A Proposed Security Evaluator for Cryptosystem Based on Information Theory and Triangular Game","authors":"S. Sadkhan, Dhilal M. Reda","doi":"10.1109/ICOASE.2018.8548830","DOIUrl":"https://doi.org/10.1109/ICOASE.2018.8548830","url":null,"abstract":"The purpose of this research is to propose a new mathematical model, designed to evaluate the security of cryptosystems. This model is a mixture of ideas from two basic mathematical theories, information theory and game theory. The role of information theory is assigning the model with security criteria of the cryptosystems. The role of game theory was to produce the value of the game which is representing the outcome of these criteria, which finally refers to cryptosystem’s security. The proposed model support an accurate and mathematical way to evaluate the security of cryptosystems by unifying the criteria resulted from information theory and produce a unique reasonable value.","PeriodicalId":144020,"journal":{"name":"2018 International Conference on Advanced Science and Engineering (ICOASE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114302879","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 : 2018-10-01DOI: 10.1109/ICOASE.2018.8548911
Mohammed S Ali, T. A. Yahiya
The rapid advancement of technology in the recent years, and the increasing of the devices that use the Internet; led to, the inference of IPv4 addresses. Therefore, IPv6 has emerged with trillions of available addresses. Despite that, a new problem arises, since not all devices support IPv6, and a direct transmission between IPv4 and IPv6 is not a possibility. Different Transmission mechanisms were produced. The three main transmission mechanisms are Dual-Stack, Translation and Tunneling. In this paper, the 6to4 tunnel ling transition technique is studied in an integrated architecture of networks using IPv4 and IPv6, and a comparison is done to study the performance of this tunnel compared to IPv4 and IPv6 networks for different types of applications.
{"title":"Performance Analysis of Native Ipv4/Ipv6 Networks Compared to 6to4 Tunnelling Mechanism","authors":"Mohammed S Ali, T. A. Yahiya","doi":"10.1109/ICOASE.2018.8548911","DOIUrl":"https://doi.org/10.1109/ICOASE.2018.8548911","url":null,"abstract":"The rapid advancement of technology in the recent years, and the increasing of the devices that use the Internet; led to, the inference of IPv4 addresses. Therefore, IPv6 has emerged with trillions of available addresses. Despite that, a new problem arises, since not all devices support IPv6, and a direct transmission between IPv4 and IPv6 is not a possibility. Different Transmission mechanisms were produced. The three main transmission mechanisms are Dual-Stack, Translation and Tunneling. In this paper, the 6to4 tunnel ling transition technique is studied in an integrated architecture of networks using IPv4 and IPv6, and a comparison is done to study the performance of this tunnel compared to IPv4 and IPv6 networks for different types of applications.","PeriodicalId":144020,"journal":{"name":"2018 International Conference on Advanced Science and Engineering (ICOASE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116525101","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 : 2018-10-01DOI: 10.1109/ICOASE.2018.8548880
K. Yousif, Sayran A. Abdulgafar
Solar Selective coatings have radiative characteristics which vary with wavelength. They are characterized by their high absorbance (α) in the visible region and low thermal emittance (ε) (or high reflection) beyond the visible region of the sun spectra. These coatings materials are of very great importance in the field of renewable energy sources (solar energy applications). In the present study, the influence of process parameters like the current density, concentration of particles, time of deposition, the thickness of the electrodeposited nickel (Ni), etc. was investigated. The objective of the research is to study solar selective coatings used in solar thermal collectors. i.e. black nickel (B-N) coatings, electrodeposited (ED) over brass substrates. Preparation and characterization of B-N coatings over brass substrates was performed. Low-cost solar selective absorbers (ED of B-N on brass) have been obtained. Trial to get rid of some structures or materials which are harm to the environment. (i.e. car batteries, by using lead sheets from recycled car battery as an anode during ED of B-N coating) was achieved. Reflectance measurements were used to evaluate both, (α) and (ε) of the coatings. The measurements of total or diffuse reflectance of samples were performed with instruments equipped with integrating spheres. Electrodeposited (ED) of black nickel BN on brass substrate has a moderate selectivity (α /ε =2.63, when α =0.95). The durability tests were carried out in the form of elevated temperature exposure in air (250 C°), temperature cycling (30-100 C°), and humidity tests (up to 90 % RH). The coatings have been re-characterized after ageing tests, using spectrophotometry and other techniques, such as X-ray techniques. Durability testing of the ED B-N coatings indicates that they are sensitive to humidity testing. However, efficient absorbers were obtained by using low-cost technique. Durability testing of the ED B-N coatings indicates that they are sensitive to humidity testing.
{"title":"Characterization of Black Nickel Solar Absorber Coatings on Brass Substrates","authors":"K. Yousif, Sayran A. Abdulgafar","doi":"10.1109/ICOASE.2018.8548880","DOIUrl":"https://doi.org/10.1109/ICOASE.2018.8548880","url":null,"abstract":"Solar Selective coatings have radiative characteristics which vary with wavelength. They are characterized by their high absorbance (α) in the visible region and low thermal emittance (ε) (or high reflection) beyond the visible region of the sun spectra. These coatings materials are of very great importance in the field of renewable energy sources (solar energy applications). In the present study, the influence of process parameters like the current density, concentration of particles, time of deposition, the thickness of the electrodeposited nickel (Ni), etc. was investigated. The objective of the research is to study solar selective coatings used in solar thermal collectors. i.e. black nickel (B-N) coatings, electrodeposited (ED) over brass substrates. Preparation and characterization of B-N coatings over brass substrates was performed. Low-cost solar selective absorbers (ED of B-N on brass) have been obtained. Trial to get rid of some structures or materials which are harm to the environment. (i.e. car batteries, by using lead sheets from recycled car battery as an anode during ED of B-N coating) was achieved. Reflectance measurements were used to evaluate both, (α) and (ε) of the coatings. The measurements of total or diffuse reflectance of samples were performed with instruments equipped with integrating spheres. Electrodeposited (ED) of black nickel BN on brass substrate has a moderate selectivity (α /ε =2.63, when α =0.95). The durability tests were carried out in the form of elevated temperature exposure in air (250 C°), temperature cycling (30-100 C°), and humidity tests (up to 90 % RH). The coatings have been re-characterized after ageing tests, using spectrophotometry and other techniques, such as X-ray techniques. Durability testing of the ED B-N coatings indicates that they are sensitive to humidity testing. However, efficient absorbers were obtained by using low-cost technique. Durability testing of the ED B-N coatings indicates that they are sensitive to humidity testing.","PeriodicalId":144020,"journal":{"name":"2018 International Conference on Advanced Science and Engineering (ICOASE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134465352","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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