Pub Date : 2018-12-01DOI: 10.1109/ICCITECHN.2018.8631920
Sakifa Aktar, Md. Al Mamun, Md. Ali Hossain
In many computer vision based problems, multiview 3D object retrieval is very useful with many application possibilities. Actually multiview 3D object is represented by a set of different views of 2D images. There are many hand-crafted features extraction techniques. Rather than using them, deep embedding network and autoencoder are used to extract features and calculate Euclidean distance to measure the similarity. This paper emphasizes on the process of retrieving 3D object from multi-view 2D images. Two established deep learning based solutions are used to retrieve images of multi-view 3D object. Finally different evaluation metrics are used to compare image retrieval performance accuracy & compare computation time and space complexity for both autoencoder and deep embedding network techniques. Here, dimension reduction algorithms PCA & t-SNE are also used to interpret the retrieval results. The experimented results show that deep embedding network gained 98% accuracy & autoencoder gained 97% accuracy to retrieve multi-view 2D images using RGB-D dataset.
{"title":"Comparative Study of Multi-View 3D Object Retrieval with Autoencoder & Deep Embedding Network","authors":"Sakifa Aktar, Md. Al Mamun, Md. Ali Hossain","doi":"10.1109/ICCITECHN.2018.8631920","DOIUrl":"https://doi.org/10.1109/ICCITECHN.2018.8631920","url":null,"abstract":"In many computer vision based problems, multiview 3D object retrieval is very useful with many application possibilities. Actually multiview 3D object is represented by a set of different views of 2D images. There are many hand-crafted features extraction techniques. Rather than using them, deep embedding network and autoencoder are used to extract features and calculate Euclidean distance to measure the similarity. This paper emphasizes on the process of retrieving 3D object from multi-view 2D images. Two established deep learning based solutions are used to retrieve images of multi-view 3D object. Finally different evaluation metrics are used to compare image retrieval performance accuracy & compare computation time and space complexity for both autoencoder and deep embedding network techniques. Here, dimension reduction algorithms PCA & t-SNE are also used to interpret the retrieval results. The experimented results show that deep embedding network gained 98% accuracy & autoencoder gained 97% accuracy to retrieve multi-view 2D images using RGB-D dataset.","PeriodicalId":355984,"journal":{"name":"2018 21st International Conference of Computer and Information Technology (ICCIT)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133769355","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 : 2018-12-01DOI: 10.1109/ICCITECHN.2018.8631919
Md Shahidur Rahaman, Nawshin Rashidi Oyshee, Samiul Alim Pratic, Khondaker Abdullah Al Mamun
Marriage is the state of being united to a person of the opposite sex as a pair in a legal, consensual, and contractual relationship recognized and sanctioned by law. In the law of every religion, there must be a legal and valid age-limit for marriage. Even though the law is strictly followed by government, most of the parents try to marry off their daughter at their early age. In most cases, parents hide their daughters age to the marriage register and without enough evidence, the register had to put the information in the registered documents. On the other hand, Kazi had to give revenue to the government for conducting every marriage but they are not aware of this process and hide it. There is no legalizing way to stop this circumvention. With the advancement of technology, people from both the village and cities are very concerned about their life and lifestyle. Where we live in the age of satellite but our marriage registration system is still in the old traditional form. After the marriage, couples hope for a wonderful life ahead. However, there are lots of concerns which arise in their mind regarding the conjugal life as well as issues related to before, during and after pregnancy. From our investigation, we identified stages required for mhealth adoption for married couples. Consequently, it created the opportunities to develop a smart application that can help to address the need. The aim of this paper is to analyze the primitive way marriage system and their huge impacts and effects on social life, finding the solution and generating a way to stop the delusion of the Kazi. An application will be proposed for the dynamic marriage registration and digitizing the system that will be the validation and legalization for the couple and the app can able to provide the planning of a couple for the contraceptives or to conceive, pregnancy planning and tracking with guideline needed for a pregnant woman along with the role of both husband and wife to help out and finally everything after the birth of the baby.
{"title":"Development of an Intelligent Platform to Digitize Marriage, Empower Married Couple for Life and Family Wellbeing Towards Digital Bangladesh","authors":"Md Shahidur Rahaman, Nawshin Rashidi Oyshee, Samiul Alim Pratic, Khondaker Abdullah Al Mamun","doi":"10.1109/ICCITECHN.2018.8631919","DOIUrl":"https://doi.org/10.1109/ICCITECHN.2018.8631919","url":null,"abstract":"Marriage is the state of being united to a person of the opposite sex as a pair in a legal, consensual, and contractual relationship recognized and sanctioned by law. In the law of every religion, there must be a legal and valid age-limit for marriage. Even though the law is strictly followed by government, most of the parents try to marry off their daughter at their early age. In most cases, parents hide their daughters age to the marriage register and without enough evidence, the register had to put the information in the registered documents. On the other hand, Kazi had to give revenue to the government for conducting every marriage but they are not aware of this process and hide it. There is no legalizing way to stop this circumvention. With the advancement of technology, people from both the village and cities are very concerned about their life and lifestyle. Where we live in the age of satellite but our marriage registration system is still in the old traditional form. After the marriage, couples hope for a wonderful life ahead. However, there are lots of concerns which arise in their mind regarding the conjugal life as well as issues related to before, during and after pregnancy. From our investigation, we identified stages required for mhealth adoption for married couples. Consequently, it created the opportunities to develop a smart application that can help to address the need. The aim of this paper is to analyze the primitive way marriage system and their huge impacts and effects on social life, finding the solution and generating a way to stop the delusion of the Kazi. An application will be proposed for the dynamic marriage registration and digitizing the system that will be the validation and legalization for the couple and the app can able to provide the planning of a couple for the contraceptives or to conceive, pregnancy planning and tracking with guideline needed for a pregnant woman along with the role of both husband and wife to help out and finally everything after the birth of the baby.","PeriodicalId":355984,"journal":{"name":"2018 21st International Conference of Computer and Information Technology (ICCIT)","volume":"181 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124550299","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 : 2018-12-01DOI: 10.1109/ICCITECHN.2018.8631908
Prince Mahmud, Md. Sohel Rana, Kamrul Hasan Talukder
String matching fundamentally is a classical problem of finding occurrence(s) of a pattern string within another string or body of text. String matching problems can be traced into intrusion detection in network, detecting plagiarism, information security, pattern recognition, document matching, text mining, speech analysis, application in bioinformatics and other diversified fields. Two important factors of string matching which are also the challenges of this paper are “number of attempts” and “number of character comparisons”. With these challenges of string matching, we have proposed a hybrid algorithm which is named as MAC (Minimum number of Attempts and Character Comparisons) algorithm. We have integrated the concepts of Berry-Ravindran (BR) algorithm and index based shifting approach with our new search technique to build our MAC algorithm. We have evaluated the MAC algorithm to analyze the performance for English text alongside biological data (DNA sequence and Protein sequence). The performance of MAC algorithm has turned out to be better than Maximum-Shift (MS) algorithm and Index Based Shifting (IBS) algorithm. The performance of the MAC algorithm is proficient for exact string matching for both small and large size of pattern length comparing with some existing algorithm to solve the string matching problem.
字符串匹配基本上是在另一个字符串或文本中查找模式字符串出现的经典问题。字符串匹配问题可以追溯到网络入侵检测、剽窃检测、信息安全、模式识别、文档匹配、文本挖掘、语音分析、生物信息学应用等多元化领域。字符串匹配的两个重要因素是“尝试次数”和“字符比较次数”，这也是本文面临的挑战。针对字符串匹配的这些挑战，我们提出了一种混合算法，命名为MAC (Minimum number of Attempts and Character comparison)算法。我们将Berry-Ravindran (BR)算法和基于索引的移动方法的概念与我们的新搜索技术相结合，构建了我们的MAC算法。我们已经评估了MAC算法来分析英语文本和生物数据(DNA序列和蛋白质序列)的性能。结果表明，MAC算法的性能优于最大位移(MS)算法和基于索引的位移(IBS)算法。与现有算法相比，该算法在解决字符串匹配问题时，无论在模式长度大小的情况下，都能熟练地进行精确的字符串匹配。
{"title":"An Efficient Hybrid Exact String Matching Algorithm to Minimize the Number of Attempts and Character Comparisons","authors":"Prince Mahmud, Md. Sohel Rana, Kamrul Hasan Talukder","doi":"10.1109/ICCITECHN.2018.8631908","DOIUrl":"https://doi.org/10.1109/ICCITECHN.2018.8631908","url":null,"abstract":"String matching fundamentally is a classical problem of finding occurrence(s) of a pattern string within another string or body of text. String matching problems can be traced into intrusion detection in network, detecting plagiarism, information security, pattern recognition, document matching, text mining, speech analysis, application in bioinformatics and other diversified fields. Two important factors of string matching which are also the challenges of this paper are “number of attempts” and “number of character comparisons”. With these challenges of string matching, we have proposed a hybrid algorithm which is named as MAC (Minimum number of Attempts and Character Comparisons) algorithm. We have integrated the concepts of Berry-Ravindran (BR) algorithm and index based shifting approach with our new search technique to build our MAC algorithm. We have evaluated the MAC algorithm to analyze the performance for English text alongside biological data (DNA sequence and Protein sequence). The performance of MAC algorithm has turned out to be better than Maximum-Shift (MS) algorithm and Index Based Shifting (IBS) algorithm. The performance of the MAC algorithm is proficient for exact string matching for both small and large size of pattern length comparing with some existing algorithm to solve the string matching problem.","PeriodicalId":355984,"journal":{"name":"2018 21st International Conference of Computer and Information Technology (ICCIT)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124114043","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 : 2018-12-01DOI: 10.1109/ICCITECHN.2018.8631942
Kamol Sarkar, Dhrubo Ahmad, Suvojit Kumar Singha, Mohiudding Ahmad
In 21st century, diabetes has become one of the most life-threatening concerns which can affect both adults and infants. If the proper treatment is not taken and the glucose level is not kept within the normal range, it can damage vital organs of the human body. Due to this, it is important to check the blood glucose level regularly. There are different types of invasive glucometers available in the market. These invasive methods need a blood sample which causes pain, time-consuming, and higher cost. For this, a noninvasive method is badly needed. In this study, an easily usable noninvasive blood glucose monitoring device is developed that can measure glucose level continuously and eliminates the drawbacks of the invasive system. Near-infrared spectroscopy and transmission photoplethysmography (PPG) is used to estimate blood glucose concentration. 940nm wavelength light is placed on a fingertip and the output of the optical sensor is filtered, amplified and fed to Arduino Uno R3 microcontroller based on Atmega328. After regression analysis, the predicted glucose level is displayed on the LCD screen. The result of the implemented device is compared with a commercially available invasive glucometer and the average error is less than 4 % which shows that the device is reliable to estimate blood glucose concentration.
在21世纪，糖尿病已成为影响成人和婴儿的最危及生命的问题之一。如果不采取适当的治疗，血糖水平不能保持在正常范围内，就会损害人体的重要器官。因此，定期检查血糖水平非常重要。市场上有不同类型的侵入性血糖仪。这些侵入性方法需要采集血液样本，这会带来疼痛、耗时和更高的成本。为此，迫切需要一种非侵入性的方法。本研究开发了一种易于使用的无创血糖监测装置，可以连续测量血糖水平，消除了有创系统的缺点。使用近红外光谱和透射光容积脉搏波(PPG)来估计血糖浓度。940nm波长的光放在指尖上，光学传感器的输出经过滤波、放大并馈送到基于Atmega328的Arduino Uno R3微控制器。经过回归分析，预测的血糖水平显示在液晶屏幕上。与市售的侵入式血糖仪进行了比较，平均误差小于4%，表明该装置可可靠地估计血糖浓度。
{"title":"Design and Implementation of a Noninvasive Blood Glucose Monitoring Device","authors":"Kamol Sarkar, Dhrubo Ahmad, Suvojit Kumar Singha, Mohiudding Ahmad","doi":"10.1109/ICCITECHN.2018.8631942","DOIUrl":"https://doi.org/10.1109/ICCITECHN.2018.8631942","url":null,"abstract":"In 21st century, diabetes has become one of the most life-threatening concerns which can affect both adults and infants. If the proper treatment is not taken and the glucose level is not kept within the normal range, it can damage vital organs of the human body. Due to this, it is important to check the blood glucose level regularly. There are different types of invasive glucometers available in the market. These invasive methods need a blood sample which causes pain, time-consuming, and higher cost. For this, a noninvasive method is badly needed. In this study, an easily usable noninvasive blood glucose monitoring device is developed that can measure glucose level continuously and eliminates the drawbacks of the invasive system. Near-infrared spectroscopy and transmission photoplethysmography (PPG) is used to estimate blood glucose concentration. 940nm wavelength light is placed on a fingertip and the output of the optical sensor is filtered, amplified and fed to Arduino Uno R3 microcontroller based on Atmega328. After regression analysis, the predicted glucose level is displayed on the LCD screen. The result of the implemented device is compared with a commercially available invasive glucometer and the average error is less than 4 % which shows that the device is reliable to estimate blood glucose concentration.","PeriodicalId":355984,"journal":{"name":"2018 21st International Conference of Computer and Information Technology (ICCIT)","volume":"2 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125459689","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 : 2018-12-01DOI: 10.1109/ICCITECHN.2018.8631941
Mubtasim Rafid Chowdhury, M. N. Mollah, M. Raihan, Abu Shakil Ahmed, Md. Abdul Halim, Md. Shahin Hossain
The disability to control different limbs of human body is a major obstacle in which many people suffer from. This might be inherent or occur due to an accident. Their day-to-day activities are impeded by immobility and they are segregated from various social events to an extent. For the patients suffering from quadriplegia whose entire body is paralyzed, motorized mechanical systems such as wheelchair are not sufficient enough. A simplistic approach of an automated wheelchair has been proposed here which can be operated by directional eye movement using electrooculography (EOG) signal. After proper assembly the performance appraisal justifies the proposed prototypes effectiveness.
{"title":"Designing a Cost Effective Prototype of an Automated Wheelchair Based on EOG (Electrooculography)","authors":"Mubtasim Rafid Chowdhury, M. N. Mollah, M. Raihan, Abu Shakil Ahmed, Md. Abdul Halim, Md. Shahin Hossain","doi":"10.1109/ICCITECHN.2018.8631941","DOIUrl":"https://doi.org/10.1109/ICCITECHN.2018.8631941","url":null,"abstract":"The disability to control different limbs of human body is a major obstacle in which many people suffer from. This might be inherent or occur due to an accident. Their day-to-day activities are impeded by immobility and they are segregated from various social events to an extent. For the patients suffering from quadriplegia whose entire body is paralyzed, motorized mechanical systems such as wheelchair are not sufficient enough. A simplistic approach of an automated wheelchair has been proposed here which can be operated by directional eye movement using electrooculography (EOG) signal. After proper assembly the performance appraisal justifies the proposed prototypes effectiveness.","PeriodicalId":355984,"journal":{"name":"2018 21st International Conference of Computer and Information Technology (ICCIT)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122233384","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 : 2018-12-01DOI: 10.1109/ICCITECHN.2018.8631946
Ryhan Ahmed Tamim, Md. Hadiuzzaman Bappy, S. Newaz, Anam Islam, Arjuman Sreashtho
Now we are living in digital era. Every aspect of life is becoming digital. It is true for reading books, papers, or journals also. However, our old books or journals are in analog format. To convert those papers, books, or journals in digital format, we need a scanner. Accordingly, if the scanner feed pages automatically, it will be more easier. However, in present market, auto feeding scanner is a very much costly device. In this paper, we propose a new method to build a low cost automatic document feeding scanner. We also compare the performance of our proposed scanner with other scanners available in market and found that our scanners output is similar to them. This discussion also provides a comparison table of different types of Auto Feeding Scanner.
{"title":"Automatic Document Feeding Scanner: A Low Cost Approach","authors":"Ryhan Ahmed Tamim, Md. Hadiuzzaman Bappy, S. Newaz, Anam Islam, Arjuman Sreashtho","doi":"10.1109/ICCITECHN.2018.8631946","DOIUrl":"https://doi.org/10.1109/ICCITECHN.2018.8631946","url":null,"abstract":"Now we are living in digital era. Every aspect of life is becoming digital. It is true for reading books, papers, or journals also. However, our old books or journals are in analog format. To convert those papers, books, or journals in digital format, we need a scanner. Accordingly, if the scanner feed pages automatically, it will be more easier. However, in present market, auto feeding scanner is a very much costly device. In this paper, we propose a new method to build a low cost automatic document feeding scanner. We also compare the performance of our proposed scanner with other scanners available in market and found that our scanners output is similar to them. This discussion also provides a comparison table of different types of Auto Feeding Scanner.","PeriodicalId":355984,"journal":{"name":"2018 21st International Conference of Computer and Information Technology (ICCIT)","volume":"26 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114027366","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 : 2018-12-01DOI: 10.1109/ICCITECHN.2018.8631945
Afsana Khan, Afrida Anzum Aesha, Juthi Sarker Aka, S. Rahman, Md. Jamil-Ur Rahman
Nowadays fire accident in buildings has become a very common incident. As the structural design of modern buildings are complex and augmented, fire accident victims often find it difficult to identify a safe path to exit the building. As a result, they panic which causes more injuries and deaths. In this paper, we have proposed an IoT based intelligent fire evacuation system that will effectively guide people along an evacuation path in case of fire accidents. A* search algorithm has been used to control the central module of the proposed model. This will help people navigate out of danger by guiding through the shortest safe path possible. It shows the next best path if the first optimal path is already crowded. A grid based floor plan simulation both in software and hardware has been designed and implemented to accomplish the desired goal. For a real time, active, intelligent guidance system, here a wireless sensor network including sensors like PIR sensors, smokes sensors and heat sensors have been combined together. The system will not only help evacuees reach the exit but also automatically notify the fire brigade for rescue operation.
{"title":"An IoT Based Intelligent Fire Evacuation System","authors":"Afsana Khan, Afrida Anzum Aesha, Juthi Sarker Aka, S. Rahman, Md. Jamil-Ur Rahman","doi":"10.1109/ICCITECHN.2018.8631945","DOIUrl":"https://doi.org/10.1109/ICCITECHN.2018.8631945","url":null,"abstract":"Nowadays fire accident in buildings has become a very common incident. As the structural design of modern buildings are complex and augmented, fire accident victims often find it difficult to identify a safe path to exit the building. As a result, they panic which causes more injuries and deaths. In this paper, we have proposed an IoT based intelligent fire evacuation system that will effectively guide people along an evacuation path in case of fire accidents. A* search algorithm has been used to control the central module of the proposed model. This will help people navigate out of danger by guiding through the shortest safe path possible. It shows the next best path if the first optimal path is already crowded. A grid based floor plan simulation both in software and hardware has been designed and implemented to accomplish the desired goal. For a real time, active, intelligent guidance system, here a wireless sensor network including sensors like PIR sensors, smokes sensors and heat sensors have been combined together. The system will not only help evacuees reach the exit but also automatically notify the fire brigade for rescue operation.","PeriodicalId":355984,"journal":{"name":"2018 21st International Conference of Computer and Information Technology (ICCIT)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134422277","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 : 2018-12-01DOI: 10.1109/ICCITECHN.2018.8631940
Kamal Hosen, Biazid Kabir Moghal, A. Islam, M. S. Islam
In graphene honeycomb structure, the phonon particles are strongly coupled with the electrons, therefore any change in the structure of graphene changes the electron-phonon (e-ph) interaction and consequently it has an impressive effect on the electronic and vibrational properties of graphene. Here in this paper, we report the electron-phonon interaction of vacancy defected single layer graphene using first principle calculations based on density functional theory. In this paper, it has been found that vacancy defect introduces a band gap in the graphene structure. In vacancy defected graphene, the ZA phonon modes are shifted downward in the lower frequency region and the el-ph coupling coefficient increases from 0.0035 to 0.30 at Gaussian Broadening of 0.5 Ry which indicates that vacancy defect enhances a ballistic transports of the high-frequency phonons in graphene structure. Again, from Raman spectrum it has found that the G-peak shifts from the frequency of 1607 cm−1to 1704 cm 1due to the presence of vacancy defect and the vibrational modes are IR active in disordered graphene where they are not IR active in case of pristine graphene. Thus this paper gives a deep insight about the electronic and vibrational properties of vacancy induced graphene structure.
在石墨烯蜂窝结构中，声子粒子与电子强烈耦合，因此石墨烯结构的任何变化都会改变电子-声子(e-ph)相互作用，从而对石墨烯的电子和振动特性产生令人印象深刻的影响。在本文中，我们利用基于密度泛函理论的第一性原理计算报告了空位缺陷单层石墨烯的电子-声子相互作用。本文发现，空位缺陷在石墨烯结构中引入了带隙。在空位缺陷的石墨烯中，ZA声子模式在低频区向下移动，el-ph耦合系数从0.0035增加到0.30，高斯展宽0.5 Ry，表明空位缺陷增强了石墨烯结构中高频声子的弹道输运。同样，从拉曼光谱中发现，由于空位缺陷的存在，g峰从1607 cm - 1的频率转移到1704 cm - 1，并且在无序石墨烯中振动模式具有红外活性，而在原始石墨烯中则没有红外活性。因此，本文对空位诱导石墨烯结构的电子和振动特性有了深入的了解。
{"title":"Vacancy Induced Electron-Phonon Interaction of Single Layer Graphene","authors":"Kamal Hosen, Biazid Kabir Moghal, A. Islam, M. S. Islam","doi":"10.1109/ICCITECHN.2018.8631940","DOIUrl":"https://doi.org/10.1109/ICCITECHN.2018.8631940","url":null,"abstract":"In graphene honeycomb structure, the phonon particles are strongly coupled with the electrons, therefore any change in the structure of graphene changes the electron-phonon (e-ph) interaction and consequently it has an impressive effect on the electronic and vibrational properties of graphene. Here in this paper, we report the electron-phonon interaction of vacancy defected single layer graphene using first principle calculations based on density functional theory. In this paper, it has been found that vacancy defect introduces a band gap in the graphene structure. In vacancy defected graphene, the ZA phonon modes are shifted downward in the lower frequency region and the el-ph coupling coefficient increases from 0.0035 to 0.30 at Gaussian Broadening of 0.5 Ry which indicates that vacancy defect enhances a ballistic transports of the high-frequency phonons in graphene structure. Again, from Raman spectrum it has found that the G-peak shifts from the frequency of 1607 cm−1to 1704 cm 1due to the presence of vacancy defect and the vibrational modes are IR active in disordered graphene where they are not IR active in case of pristine graphene. Thus this paper gives a deep insight about the electronic and vibrational properties of vacancy induced graphene structure.","PeriodicalId":355984,"journal":{"name":"2018 21st International Conference of Computer and Information Technology (ICCIT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116793794","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 : 2018-12-01DOI: 10.1109/ICCITECHN.2018.8631957
Md. Enamul Haque, S. Zobaed, Muhammad Usama Islam, Faaiza Mohammad Areef
In this paper, we provide a comprehensive performance evaluation of popular symmetric and asymmetric key encryption algorithms to selecting better utilization on resource constraint and mobile devices. We focus on AES, RC4, Blowfish, CAST, 3DES, Twofish as symmetric key encryption and DSA and ElGamal as an asymmetric encryption algorithms. The performance is compared using different parameters such as key size, data blocks, data types, and encryption/decryption speed. The experiments are performed to exploit the effectiveness of different cryptographic algorithms to use in real life applications where fast execution time and less memory usage requirement is of prime importance.
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Pub Date : 2018-12-01DOI: 10.1109/ICCITECHN.2018.8631955
N. Chowdhury, R. Raje
App stores or application distribution platforms allow users to present their sentiments about apps in the forms of ratings and reviews. However, selecting the “best one” from available apps that offer similar functionality is difficult task - especially, if the selection process only uses the average star rating of the apps. To address this challenge, we have introduced a trust-based selection and ranking system of similar apps by combining the programmatic view (“internal view”) and the sentiments based on users reviews (“external view”). The rankings based on the average star ratings are compared with the rankings generated by our approach. We empirically evaluate our approach by using the publically available apps from the Google Play Store. For this study, we have chosen a dataset of 250 apps with total 114,480 reviews from top 5 different categories - of which we focused our experiments on 90 apps that have at least 1000 reviews. Our experiments indicate that proposed holistic ranking that encompasses both the internal and external views is a better alternative than any ranking that focuses only on the internal or external view.
应用商店或应用分发平台允许用户以评分和评论的形式表达他们对应用的看法。然而，从提供类似功能的应用程序中选择“最佳应用”是一项艰巨的任务，尤其是在选择过程中只使用应用程序的平均星级评分的情况下。为了应对这一挑战，我们引入了一个基于信任的选择和排名系统，结合了程序化视图(“内部视图”)和基于用户评论的情绪(“外部视图”)。将基于平均星级评级的排名与我们的方法生成的排名进行比较。我们通过使用Google Play Store中的公开应用来评估我们的方法。在这项研究中，我们从前5个不同类别中选择了250个应用程序的数据集，总共有114,480条评论，其中我们将实验重点放在90个至少有1000条评论的应用程序上。我们的实验表明，提议的整体排名包括内部和外部的观点是一个更好的选择，而不是任何排名只关注内部或外部的观点。
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