Lộc Bảo - Academia.edu (original) (raw)
Papers by Lộc Bảo
This paper presents a method to improve the conductivity of embroidered patch antenna by using gr... more This paper presents a method to improve the conductivity of embroidered patch antenna by using graphene and zinc oxide (ZnO) nanopowder. By dispersion and immersion of graphene and ZnO, the embroidered conductive patch layers have been designed, fabricated and tested. Analysis of the effect of graphene and ZnO solution on patch resistance has been carried out. The measured results show that the conductivity performs better with ZnO dyed embroidered patch layer. In contrast, graphene improves the sheet resistance while ethanol solvent reacts with silver thread.
For everyday human life, people desire to stay connected via an advanced wireless network. Althou... more For everyday human life, people desire to stay connected via an advanced wireless network. Although cellular phone is worthy in various applications, people are likely to carry a wide range of mobile devices and constantly connect with each other. Future communication network requires a new class of frontends electronic devices that are small, lightweight , conformal, multi-functional but also environment-friendly, inexpensive and good performance. In different aspects, once of the key factors to achieve this goal is to integrate the wireless antenna into garments as daily clothes and enhance its durability. Consequently, these wearable antennas need not only possess good RF performance characteristics but also mechanical structure which adaptable to conformity and durability. This dissertation presents a novel class embroidery patch antenna on I am deeply indebted to my supervisor, Dr. Pei Cheng Ooi, who has inspired me to undertake the work presented herein. I would like to appreciate her for her kindness and time spent throughout the years by carefully reviewing my work and manuscripts. Her constant encouragement, valuable suggestions, patience and guidance have been a valuable asset in my research. I would also like to express my gratitude to my examiner Dr. Amin Malek Mohammadi for his thorough examination of my thesis. His valuable suggestions and comments have not only led to an improved thesis, but also will have significant impact on my future research path. A special thank must be made to my co-supervisor Dr. Jit Kai Chin and Dr. Linus Lau from CST Malaysia for their time and advices on my research. Their willingness of listening to the electromagnetic problems has brought great discussion for my project. I would also like to acknowledge my appreciation to Malaysia government, Ministry of Science, Technology and Innovation (MOSTI) for the sponsorship and the University of Nottingham Malaysia Campus for providing me laboratory and equipment that support me to finish my research. Words seem not enough for me to express my heartfelt appreciation to my family, my mom Mrs. Thuy Nguyen and my sweety Ms. Chuong Le for their encouragement, warm support through tough times and always. I am also pleased to send my regards to Ms. Nguyen Ngo for her assistance in drawing images, my perfect partners Ms. June, Dr. Renu, Dr. Cat, my VFT fellow together with all of my friends, 105 full house, my sisters and brothers in UN for their great kindness during my research journey.
2014 International Symposium on Antennas and Propagation Conference Proceedings, 2014
This paper presents a method to improve the conductivity of embroidered patch antenna by using gr... more This paper presents a method to improve the conductivity of embroidered patch antenna by using graphene and zinc oxide (ZnO) nanopowder. By dispersion and immersion of graphene and ZnO, the embroidered conductive patch layers have been designed, fabricated and tested. Analysis of the effect of graphene and ZnO solution on patch resistance has been carried out. The measured results show that the conductivity performs better with ZnO dyed embroidered patch layer. In contrast, graphene improves the sheet resistance while ethanol solvent reacts with silver thread.
2014 IEEE Antennas and Propagation Society International Symposium (APSURSI), 2014
Journal of advances in mathematics and computer science, Jan 17, 2020
Many researches have been going on since last two decades for object recognition, shape matching,... more Many researches have been going on since last two decades for object recognition, shape matching, and pattern recognition in the field of computer vision. Face recognition is one of the important issues in object recognition and computer vision. Many face image datasets, related competitions, and evaluation programs have encouraged innovation, producing more powerful facial recognition technology with promising results. In recent years, we have witnessed tremendous improvements in face recognition performance from complex deep neural network architectures trained on millions of face images. Face recognition is the most important biometric and stills many challenges such as pose variation, illumination variation, etc. In order to achieve the desired performance when deploying in reality, the methods depend on many factors. One of the main factors is quality of input image. Therefore, facial recognition systems is installed outdoors which are always affected by extreme weather events such as haze, fog. The existence of haze dramatically degrades the visibility of outdoor images captured in inclement weather and affects many high-level computer vision tasks such as detection and recognition system. In this paper, we propose a preprocessing method to remove haze from input images that
Journal of information systems and telecommunication, Oct 27, 2021
Today, cars are becoming a popular means of life. This rapid development has resulted in an incre... more Today, cars are becoming a popular means of life. This rapid development has resulted in an increasing demand for private parking. Therefore, finding a parking space in urban areas is extremely difficult for drivers. Another serious problem is that parking on the roadway has serious consequences like traffic congestion. As a result, various solutions are proposed to solve basic functions such as detecting a space or determining the position of the parking to orient the driver. In this paper, we propose a system that not only detects the space but also identifies the vehicle's identity based on their respective license plate. Our proposal system includes two cameras with two independent functions, Skyeye and LPR cameras, respectively. Skyeye module has function to detect and track vehicles while automatic license plate recognition system (ALPR) module detects and identifies license plates. Therefore, the system not only helps drivers to find suitable parking space but also manages and controls vehicles effectively for street parking. Besides, it is possible to detect offending vehicles parking on the roadway based on its identity. We also collect a set of data that correctly distributes for the context in order to increase the system's performance. The accuracy of proposal system is 99.48% that shows the feasibility of applying into real environments.
Plant Cell Tissue and Organ Culture, Mar 23, 2023
Journal of Information Systems and Telecommunication (JIST), 2021
Today, cars are becoming a popular means of life. This rapid development has resulted in an incre... more Today, cars are becoming a popular means of life. This rapid development has resulted in an increasing demand for private parking. Therefore, finding a parking space in urban areas is extremely difficult for drivers. Another serious problem is that parking on the roadway has serious consequences like traffic congestion. As a result, various solutions are proposed to solve basic functions such as detecting a space or determining the position of the parking to orient the driver. In this paper, we propose a system that not only detects the space but also identifies the vehicle's identity based on their respective license plate. Our proposal system includes two cameras with two independent functions, Skyeye and LPR cameras, respectively. Skyeye module has function to detect and track vehicles while automatic license plate recognition system (ALPR) module detects and identifies license plates. Therefore, the system not only helps drivers to find suitable parking space but also manages and controls vehicles effectively for street parking. Besides, it is possible to detect offending vehicles parking on the roadway based on its identity. We also collect a set of data that correctly distributes for the context in order to increase the system's performance. The accuracy of proposal system is 99.48% that shows the feasibility of applying into real environments.
Approving the program priority plans 3) Authorizing the City Manager to designate a representativ... more Approving the program priority plans 3) Authorizing the City Manager to designate a representative to sign required fiscal and programmatic reports.
Chinese Journal of Power Sources, 2002
The principle and fabrication technology of TCO (transparent conduct oxide) SnO 2:F film with lar... more The principle and fabrication technology of TCO (transparent conduct oxide) SnO 2:F film with large area by chemical vapor deposition (CVD) method was described. An etching formation method for fabricating TCO SnO 2:F film with large area was introduced. That is, a common corrosion resistant film forms the required pattern by exposure and development, then mix the diluted adhesive solvent and zinc powder with a certain proportion and spread the mixture onto the corrosion resistant film homogeneously by silk screen process. Next, put the film into HCL solution to etch the SnO 2:F film, thus the pattern with high quality is obtained. Put the etched SnO 2 conductive glass into amorphous silicon depositing chamber and deposite p a Si,i a Si and n a Si orderly by glow discharge method, then evaporate the aluminum electrode in high vacuum degree container, the outer connection amorphous silicon solar cell based on SnO 2 conductive film is finally fabricated. Compared with outer connection solar cell based on indium tin oxide(ITO) conductive film, its electrical performance is obviously improved, especially the average short circuit current is increased up to 29.3% and the maximum output is 7.76 μm/cm 2 under 200 lx white fluorescent light.
This paper presents a method to improve the conductivity of embroidered patch antenna by using gr... more This paper presents a method to improve the conductivity of embroidered patch antenna by using graphene and zinc oxide (ZnO) nanopowder. By dispersion and immersion of graphene and ZnO, the embroidered conductive patch layers have been designed, fabricated and tested. Analysis of the effect of graphene and ZnO solution on patch resistance has been carried out. The measured results show that the conductivity performs better with ZnO dyed embroidered patch layer. In contrast, graphene improves the sheet resistance while ethanol solvent reacts with silver thread.
For everyday human life, people desire to stay connected via an advanced wireless network. Althou... more For everyday human life, people desire to stay connected via an advanced wireless network. Although cellular phone is worthy in various applications, people are likely to carry a wide range of mobile devices and constantly connect with each other. Future communication network requires a new class of frontends electronic devices that are small, lightweight , conformal, multi-functional but also environment-friendly, inexpensive and good performance. In different aspects, once of the key factors to achieve this goal is to integrate the wireless antenna into garments as daily clothes and enhance its durability. Consequently, these wearable antennas need not only possess good RF performance characteristics but also mechanical structure which adaptable to conformity and durability. This dissertation presents a novel class embroidery patch antenna on I am deeply indebted to my supervisor, Dr. Pei Cheng Ooi, who has inspired me to undertake the work presented herein. I would like to appreciate her for her kindness and time spent throughout the years by carefully reviewing my work and manuscripts. Her constant encouragement, valuable suggestions, patience and guidance have been a valuable asset in my research. I would also like to express my gratitude to my examiner Dr. Amin Malek Mohammadi for his thorough examination of my thesis. His valuable suggestions and comments have not only led to an improved thesis, but also will have significant impact on my future research path. A special thank must be made to my co-supervisor Dr. Jit Kai Chin and Dr. Linus Lau from CST Malaysia for their time and advices on my research. Their willingness of listening to the electromagnetic problems has brought great discussion for my project. I would also like to acknowledge my appreciation to Malaysia government, Ministry of Science, Technology and Innovation (MOSTI) for the sponsorship and the University of Nottingham Malaysia Campus for providing me laboratory and equipment that support me to finish my research. Words seem not enough for me to express my heartfelt appreciation to my family, my mom Mrs. Thuy Nguyen and my sweety Ms. Chuong Le for their encouragement, warm support through tough times and always. I am also pleased to send my regards to Ms. Nguyen Ngo for her assistance in drawing images, my perfect partners Ms. June, Dr. Renu, Dr. Cat, my VFT fellow together with all of my friends, 105 full house, my sisters and brothers in UN for their great kindness during my research journey.
2014 International Symposium on Antennas and Propagation Conference Proceedings, 2014
This paper presents a method to improve the conductivity of embroidered patch antenna by using gr... more This paper presents a method to improve the conductivity of embroidered patch antenna by using graphene and zinc oxide (ZnO) nanopowder. By dispersion and immersion of graphene and ZnO, the embroidered conductive patch layers have been designed, fabricated and tested. Analysis of the effect of graphene and ZnO solution on patch resistance has been carried out. The measured results show that the conductivity performs better with ZnO dyed embroidered patch layer. In contrast, graphene improves the sheet resistance while ethanol solvent reacts with silver thread.
2014 IEEE Antennas and Propagation Society International Symposium (APSURSI), 2014
Journal of advances in mathematics and computer science, Jan 17, 2020
Many researches have been going on since last two decades for object recognition, shape matching,... more Many researches have been going on since last two decades for object recognition, shape matching, and pattern recognition in the field of computer vision. Face recognition is one of the important issues in object recognition and computer vision. Many face image datasets, related competitions, and evaluation programs have encouraged innovation, producing more powerful facial recognition technology with promising results. In recent years, we have witnessed tremendous improvements in face recognition performance from complex deep neural network architectures trained on millions of face images. Face recognition is the most important biometric and stills many challenges such as pose variation, illumination variation, etc. In order to achieve the desired performance when deploying in reality, the methods depend on many factors. One of the main factors is quality of input image. Therefore, facial recognition systems is installed outdoors which are always affected by extreme weather events such as haze, fog. The existence of haze dramatically degrades the visibility of outdoor images captured in inclement weather and affects many high-level computer vision tasks such as detection and recognition system. In this paper, we propose a preprocessing method to remove haze from input images that
Journal of information systems and telecommunication, Oct 27, 2021
Today, cars are becoming a popular means of life. This rapid development has resulted in an incre... more Today, cars are becoming a popular means of life. This rapid development has resulted in an increasing demand for private parking. Therefore, finding a parking space in urban areas is extremely difficult for drivers. Another serious problem is that parking on the roadway has serious consequences like traffic congestion. As a result, various solutions are proposed to solve basic functions such as detecting a space or determining the position of the parking to orient the driver. In this paper, we propose a system that not only detects the space but also identifies the vehicle's identity based on their respective license plate. Our proposal system includes two cameras with two independent functions, Skyeye and LPR cameras, respectively. Skyeye module has function to detect and track vehicles while automatic license plate recognition system (ALPR) module detects and identifies license plates. Therefore, the system not only helps drivers to find suitable parking space but also manages and controls vehicles effectively for street parking. Besides, it is possible to detect offending vehicles parking on the roadway based on its identity. We also collect a set of data that correctly distributes for the context in order to increase the system's performance. The accuracy of proposal system is 99.48% that shows the feasibility of applying into real environments.
Plant Cell Tissue and Organ Culture, Mar 23, 2023
Journal of Information Systems and Telecommunication (JIST), 2021
Today, cars are becoming a popular means of life. This rapid development has resulted in an incre... more Today, cars are becoming a popular means of life. This rapid development has resulted in an increasing demand for private parking. Therefore, finding a parking space in urban areas is extremely difficult for drivers. Another serious problem is that parking on the roadway has serious consequences like traffic congestion. As a result, various solutions are proposed to solve basic functions such as detecting a space or determining the position of the parking to orient the driver. In this paper, we propose a system that not only detects the space but also identifies the vehicle's identity based on their respective license plate. Our proposal system includes two cameras with two independent functions, Skyeye and LPR cameras, respectively. Skyeye module has function to detect and track vehicles while automatic license plate recognition system (ALPR) module detects and identifies license plates. Therefore, the system not only helps drivers to find suitable parking space but also manages and controls vehicles effectively for street parking. Besides, it is possible to detect offending vehicles parking on the roadway based on its identity. We also collect a set of data that correctly distributes for the context in order to increase the system's performance. The accuracy of proposal system is 99.48% that shows the feasibility of applying into real environments.
Approving the program priority plans 3) Authorizing the City Manager to designate a representativ... more Approving the program priority plans 3) Authorizing the City Manager to designate a representative to sign required fiscal and programmatic reports.
Chinese Journal of Power Sources, 2002
The principle and fabrication technology of TCO (transparent conduct oxide) SnO 2:F film with lar... more The principle and fabrication technology of TCO (transparent conduct oxide) SnO 2:F film with large area by chemical vapor deposition (CVD) method was described. An etching formation method for fabricating TCO SnO 2:F film with large area was introduced. That is, a common corrosion resistant film forms the required pattern by exposure and development, then mix the diluted adhesive solvent and zinc powder with a certain proportion and spread the mixture onto the corrosion resistant film homogeneously by silk screen process. Next, put the film into HCL solution to etch the SnO 2:F film, thus the pattern with high quality is obtained. Put the etched SnO 2 conductive glass into amorphous silicon depositing chamber and deposite p a Si,i a Si and n a Si orderly by glow discharge method, then evaporate the aluminum electrode in high vacuum degree container, the outer connection amorphous silicon solar cell based on SnO 2 conductive film is finally fabricated. Compared with outer connection solar cell based on indium tin oxide(ITO) conductive film, its electrical performance is obviously improved, especially the average short circuit current is increased up to 29.3% and the maximum output is 7.76 μm/cm 2 under 200 lx white fluorescent light.