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In recent years, education institutions have offered a wide range of course selections with overlaps. This presents significant challenges to students in selecting successful courses that match their current knowledge and personal goals. Although many studies have been conducted on Recommender Systems (RS), a review of methodologies used in course RS is still insufficiently explored. To fill this literature gap, this paper presents the state of the art of methodologies used in course RS along with the summary of the types of data sources used to evaluate these techniques. This review aims to recognize emerging trends in course RS techniques in recent research literature to deliver insights for researchers for further investigation. We provide a systematic review process followed by research findings on the current methodologies implemented in different course RS in selected research journals such as: collaborative, content-based, knowledge-based, Data Mining (DM), hybrid, statistical and Conversational RS (CRS). This study analyzed publications between 2016 and June 2020, in three repositories; IEEE Xplore, ACM, and Google Scholar. These papers were explored and classified based on the methodology used in recommending courses. This review has revealed that there is a growing popularity in hybrid course RS and followed by DM techniques in recent publications. However, few CRS-based course RS were present in the selected publications. Finally, we discussed future avenues based on the research outcome, which might lead to next-generation course RS.
Deepani Guruge; Rajan Kadel; Sharly Halder. The State of the Art in Methodologies of Course Recommender Systems—A Review of Recent Research. Data 2021, 6, 18 .
AMA StyleDeepani Guruge, Rajan Kadel, Sharly Halder. The State of the Art in Methodologies of Course Recommender Systems—A Review of Recent Research. Data. 2021; 6 (2):18.
Chicago/Turabian StyleDeepani Guruge; Rajan Kadel; Sharly Halder. 2021. "The State of the Art in Methodologies of Course Recommender Systems—A Review of Recent Research." Data 6, no. 2: 18.
To reach the goal of sustainable agriculture, smart farming is taking advantage of the Unmanned Aerial Vehicles (UAVs) and Internet of Things (IoT) paradigm. These smart farms are designed to be run by interconnected devices and vehicles. Some enormous potentials can be achieved by the integration of different IoT technologies to achieve automated operations with minimum supervision. This paper outlines some major applications of IoT and UAV in smart farming, explores the communication technologies, network functionalities and connectivity requirements for Smart farming. The connectivity limitations of smart agriculture and it’s solutions are analysed with two case studies. In case study-1, we propose and evaluate meshed Long Range Wide Area Network (LoRaWAN) gateways to address connectivity limitations of Smart Farming. While in case study-2, we explore satellite communication systems to provide connectivity to smart farms in remote areas of Australia. Finally, we conclude the paper by identifying future research challenges on this topic and outlining directions to address those challenges.
Nahina Islam; Mamunur Rashid; Faezeh Pasandideh; Biplob Ray; Steven Moore; Rajan Kadel. A Review of Applications and Communication Technologies for Internet of Things (IoT) and Unmanned Aerial Vehicle (UAV) Based Sustainable Smart Farming. Sustainability 2021, 13, 1821 .
AMA StyleNahina Islam, Mamunur Rashid, Faezeh Pasandideh, Biplob Ray, Steven Moore, Rajan Kadel. A Review of Applications and Communication Technologies for Internet of Things (IoT) and Unmanned Aerial Vehicle (UAV) Based Sustainable Smart Farming. Sustainability. 2021; 13 (4):1821.
Chicago/Turabian StyleNahina Islam; Mamunur Rashid; Faezeh Pasandideh; Biplob Ray; Steven Moore; Rajan Kadel. 2021. "A Review of Applications and Communication Technologies for Internet of Things (IoT) and Unmanned Aerial Vehicle (UAV) Based Sustainable Smart Farming." Sustainability 13, no. 4: 1821.
As mobile devices have become a part of our everyday life, there is a lot of research going on how to make this technology more productive for the students. Most of the research studies have indicated that, mobile devices are very useful for students while a few research studies negates its effectiveness. In this paper, we have presented the literature survey conducted on the use of mobile technologies in the field of Teaching and Learning (T&L). These studies are broadly classified into three areas: Impact and learning environment; specific applications; and mobile learning framework. We will be exploring all these areas in this paper. Our review in impact and environment of mobile learning indicates that the use of mobile technology is nourishing the knowledge and learning of students in most cases. Our review on specific applications of mobile learning reveals positive impacts on learning in various fields but the key concern raised was difficulties in implementing them and not having proper control guideline. Moreover, our review on frameworks for mobile learning indicates that there are different frameworks developed for different applications. Most of the applications are limited to non-technical areas. However, we can observed that there is a lack of connectivity between course development and framework for mobile learning. Therefore, the future course developers need to address the gap by taking into account of learners’ behavior in using mobile devices and their cultures to enrich student engagement and learning.
Sadia Aziz; Rajan Kadel; Deepani B. Guruge; Krishna Paudel; Vanaja Karagiannidis. Mobile Learning Approaches and Its Impact on Student‘s Education — A Survey. International Journal of Information and Education Technology 2021, 11, 429 -435.
AMA StyleSadia Aziz, Rajan Kadel, Deepani B. Guruge, Krishna Paudel, Vanaja Karagiannidis. Mobile Learning Approaches and Its Impact on Student‘s Education — A Survey. International Journal of Information and Education Technology. 2021; 11 (9):429-435.
Chicago/Turabian StyleSadia Aziz; Rajan Kadel; Deepani B. Guruge; Krishna Paudel; Vanaja Karagiannidis. 2021. "Mobile Learning Approaches and Its Impact on Student‘s Education — A Survey." International Journal of Information and Education Technology 11, no. 9: 429-435.
Error Correction Schemes (ECSs) significantly contribute to enhancing reliability and energy efficiency of Wireless Sensor Networks (WSNs). This review paper offers an overview of the different types of ECS used in communication systems and a synopsis of the standards for WSN. We also discuss channels and network models for WSN as they are crucial for efficient ECS design and implementation. The literature review conducted on the proposed energy consumption and efficiency models for WSN indicates that existing research work has not considered Single Hop Asymmetric Structure (SHAS) with high performing Error Correcting Codes (ECCs). We present a review on proposed ECS for WSN based on three criteria: Forward Error Correction (FEC), adaptive error correction techniques, and other techniques. Based on our review work, we found that there are limited works on ECS design on a realistic network model i.e., a modified multi-hop WSN model. Finally, we offer future research challenges and opportunities on ECS design and implementation for WSN.
Rajan Kadel; Krishna Paudel; Deepani B. Guruge; Sharly J. Halder. Opportunities and Challenges for Error Control Schemes for Wireless Sensor Networks: A Review. Electronics 2020, 9, 504 .
AMA StyleRajan Kadel, Krishna Paudel, Deepani B. Guruge, Sharly J. Halder. Opportunities and Challenges for Error Control Schemes for Wireless Sensor Networks: A Review. Electronics. 2020; 9 (3):504.
Chicago/Turabian StyleRajan Kadel; Krishna Paudel; Deepani B. Guruge; Sharly J. Halder. 2020. "Opportunities and Challenges for Error Control Schemes for Wireless Sensor Networks: A Review." Electronics 9, no. 3: 504.
The proposed system uses cutting-edge technologies such as smart phones and Wireless Access Point (WAP) to automate student attendance in the classroom settings. The system is implemented in four steps: Wireless Local Area Network (WLAN) formation using Raspberry Pi and smart phones; Received Signal Strength (RSS) threshold determination for each setting; database and web interface implementation using Apache server, MySQL and PHP; and updating the attendance using threshold RSS, Media Access Control (MAC) address, association status of mobile devices and RSS value. The system was tested in several classroom settings including the laboratory room, lecture hall and tutorial room and obtained more than 94% of accuracy in attendance marking for all settings.
Archana Banepali; Rajan Kadel; Deepani B. Guruge; Sharly J. Halder. Design and Implementation of Wi-Fi Based Attendance System Using Raspberry Pi. 2019 29th International Telecommunication Networks and Applications Conference (ITNAC) 2019, 1 -6.
AMA StyleArchana Banepali, Rajan Kadel, Deepani B. Guruge, Sharly J. Halder. Design and Implementation of Wi-Fi Based Attendance System Using Raspberry Pi. 2019 29th International Telecommunication Networks and Applications Conference (ITNAC). 2019; ():1-6.
Chicago/Turabian StyleArchana Banepali; Rajan Kadel; Deepani B. Guruge; Sharly J. Halder. 2019. "Design and Implementation of Wi-Fi Based Attendance System Using Raspberry Pi." 2019 29th International Telecommunication Networks and Applications Conference (ITNAC) , no. : 1-6.
This paper offers a review of different types of Error Correction Scheme (ECS) used in communication systems in general, which is followed by a summary of the IEEE standard for Wireless Body Area Network (WBAN). The possible types of channels and network models for WBAN are presented that are crucial to the design and implementation of ECS. Following that, a literature review on the proposed ECSs for WBAN is conducted based on different aspects. One aspect of the review is to examine what type of parameters are considered during the research work. The second aspect of the review is to analyse how the reliability is measured and whether the research works consider the different types of reliability and delay requirement for different data types or not. The review indicates that the current literatures do not utilize the constraints that are faced by WBAN nodes during ECS design. Subsequently, we put forward future research challenges and opportunities on ECS design and the implementation for WBAN when considering computational complexity and the energy-constrained nature of nodes.
Rajan Kadel; Nahina Islam; Khandakar Ahmed; Sharly J. Halder. Opportunities and Challenges for Error Correction Scheme for Wireless Body Area Network—A Survey. Journal of Sensor and Actuator Networks 2018, 8, 1 .
AMA StyleRajan Kadel, Nahina Islam, Khandakar Ahmed, Sharly J. Halder. Opportunities and Challenges for Error Correction Scheme for Wireless Body Area Network—A Survey. Journal of Sensor and Actuator Networks. 2018; 8 (1):1.
Chicago/Turabian StyleRajan Kadel; Nahina Islam; Khandakar Ahmed; Sharly J. Halder. 2018. "Opportunities and Challenges for Error Correction Scheme for Wireless Body Area Network—A Survey." Journal of Sensor and Actuator Networks 8, no. 1: 1.
We design systematic and regular repeat-accumulate (RA) codes for non-ergodic block-fading channels. An encoder structure of RA codes for block-fading channels with an arbitrary number of fading blocks is proposed. Simulation results show that the proposed RA codes achieve full-diversity word error rate (WER) performance over block-fading channels. In addition, the WER performance of the proposed RA codes is superior to the root-low-density parity-check (LDPC) and repeat and blockwise accumulate (RBA) codes. Furthermore, the gap from the outage probability remains constant with increasing block length for the proposed RA codes. Besides an easy encoding structure, the proposed RA codes have notably less ones in the parity-check matrix compared to corresponding root-LDPC codes. Therefore, the decoding complexity of the proposed RA codes is significantly less than the corresponding root-LDPC codes.
Rajan Kadel; Gottfried Lechner. Repeat-accumulate codes for block-fading channels. 2013 Australian Communications Theory Workshop (AusCTW) 2013, 37 -42.
AMA StyleRajan Kadel, Gottfried Lechner. Repeat-accumulate codes for block-fading channels. 2013 Australian Communications Theory Workshop (AusCTW). 2013; ():37-42.
Chicago/Turabian StyleRajan Kadel; Gottfried Lechner. 2013. "Repeat-accumulate codes for block-fading channels." 2013 Australian Communications Theory Workshop (AusCTW) , no. : 37-42.