Uchenna N. Chikeluba, Mohammed D. Almustapha, Abdumalik S. Yaro and Monday F. Ohemu·May 2022·pp. 01-05
The continuous growth in the number of mobile users in wireless networks necessitates the need for increased network capacity as well as data dissemination to these users simultaneously. Device-to-Device (D2D) communication provides a way of accommodating more users in the networks, while multicast communication makes it possible to transmit data from a source to multiple destinations. A prominent problem in the multicast of data disseminated from the CH to multiple devices in wireless networks is the high probability of inefficient routing paths used for data dissemination. This results in retransmission, which could lead to outage and unnecessary overhead, as well as negatively affecting the network effective throughput. To mitigate this problem, this research considers the processing capacity of intermediate devices for the multicast of data in the D2DC, in order to resourcefully create efficient routing paths and maintain seamless dissemination of data in the underlay cellular networks.
Uchenna N. Chikeluba
Department of Telecommunications Engineering Ahmadu Bello University, Zaria
Mohammed D. Almustapha
Department of Telecommunications Engineering Ahmadu Bello University, Zaria
Abdumalik S. Yaro
Department of Telecommunications Engineering Ahmadu Bello University, Zaria
Monday F. Ohemu
Department of Telecommunications Engineering Ahmadu Bello University, Zaria
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Uchenna N. Chikeluba, Mohammed D. Almustapha, Abdumalik S. Yaro and Monday F. Ohemu, "A modified resources allocation scheme for multiple D2D cluster multicast communication underlay Cellular Network" International Journal of Latest Technology in Engineering, Management & Applied Science-IJLTEMAS vol.11 issue 5, May 2022, pp.01-05 URL: https://ijltemas.in/DigitalLibrary/Vol.11Issue5/01-05.pdf
Chukwudi Emeka Udu, Chika Edith Mgbemena, Okechukwu Chiedu Ezeanyim, and Charles Chikwendu Okpala·May 2022·pp. 06-12
Biometric systems installed on doors cannot be used by everyone, as it is unhealthy for someone to touch a device that has already been pressed by so many others. Also, people without hands cannot use fingerprint or hand-based systems, while visually impaired people have difficulties using iris or retina based techniques. To overcome these challenges, a programmed AT89C52 microcontroller access door control system that makes use of two multi-factor user authentication with password and smartcard was designed to restrict the entry of unauthorized persons from sensitive or highly secured areas. Unified Modeling Language was used to model the functionality of the system with AT89C52 microcontroller, power supply, keypad, display unit, smartcard, smartcard reader, relay driver and dc motor as hardware. The card reader was designed with a Random Access Memory card reader slot in a computer’s central processing unit connected to the port 0 of the AT89C52 microcontroller. While the software program used for the programmable AT89C52 access door control system was successfully programmed with assembly language in order to perform the desired assignment, the source code was developed in an integrated development environment. The entire software which was arranged by integrating all the modules in a main control loop, and tested for conformity with the main control program alongside the hardware, achieved its objective of deterring unauthorized attempt to highly restricted areas.
Chukwudi Emeka Udu
Department of Industrial/Production Engineering, Nnamdi Azikiwe University, P.M.B. 5025 Awka, Anambra State, Nigeria
Chika Edith Mgbemena
Department of Industrial/Production Engineering, Nnamdi Azikiwe University, P.M.B. 5025 Awka, Anambra State, Nigeria
Okechukwu Chiedu Ezeanyim
Department of Industrial/Production Engineering, Nnamdi Azikiwe University, P.M.B. 5025 Awka, Anambra State, Nigeria
Charles Chikwendu Okpala
Department of Industrial/Production Engineering, Nnamdi Azikiwe University, P.M.B. 5025 Awka, Anambra State, Nigeria
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Chukwudi Emeka Udu, Chika Edith Mgbemena, Okechukwu Chiedu Ezeanyim, and Charles Chikwendu Okpala, "Design of a Programmed AT89C52 Microcontroller Access Door Control System" International Journal of Latest Technology in Engineering, Management & Applied Science-IJLTEMAS vol.11 issue 5, May 2022, pp.06-12 URL: https://ijltemas.in/DigitalLibrary/Vol.11Issue5/06-12.pdf
Somto K. Onukwuli, Charles Chikwendu Okpala, and Fred N. Okeagu·May 2022·pp. 13-20
The applications of coir fiber reinforced composites have witnessed rapid growth in industrial applications as well as in fundamental research, due to their improved physical and mechanical characteristics. The paper started with the definitions of fiber and composites, before it provided a brief history of coir fiber starting from when it was observed from the Ramayana era around the third century B.C. The nature of coir fiber, it’s processing and extraction, as well as its chemical properties, and physical and mechanical compositions were discussed in detail. Apart from being abundant in nature, cost effective, non-toxic, renewable, lowest thermal conductivity, and bulk density, the research pointed out that coir fiber is more durable than other natural fibers because of its high lignin content. Despite the remarkable properties of coir fiber, it was noted that untreated coir fiber composites have unwanted features such as dimensional instability and flammability which makes it unsuitable for high temperature applications. After explaining that the extremely hydrophilic character of coir, along with the hydrophobic nature of the polymers employed for matrix production makes the manufacture of coir polymer composites difficult, resulting in mechanical property loss following moisture uptake, the paper concluded that in order to reduce or eliminate the rate of moisture absorption, that coir fiber surface must be chemically modified.
Somto K. Onukwuli
Department of Industrial/Production Engineering, Nnamdi Azikiwe University, P.M.B. 5025 Awka, Anambra State, Nigeria
Charles Chikwendu Okpala
Department of Industrial/Production Engineering, Nnamdi Azikiwe University, P.M.B. 5025 Awka, Anambra State, Nigeria
Fred N. Okeagu
Department of Industrial/Production Engineering, Nnamdi Azikiwe University, P.M.B. 5025 Awka, Anambra State, Nigeria
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Somto K. Onukwuli, Charles Chikwendu Okpala, and Fred N. Okeagu, "Review of Benefits and Limitations of Coir Fiber Filler Material in Composites" International Journal of Latest Technology in Engineering, Management & Applied Science-IJLTEMAS vol.11 issue 5, May 2022, pp.13-20 URL: https://ijltemas.in/DigitalLibrary/Vol.11Issue5/13-20.pdf
The objective of the study was to critically examine the significance of employee engagement on organizational productivity. Businesses are confronted with a variety of challenges ranging from low productivity, low profitability, low market share, poor service delivery, and employees’ intention to leave the organizations. These problems have manifested to job dissatisfaction, an absence of responsibility and communication between organizational levels. The study concluded that job satisfaction, employee commitment and feedback have positive relationships with organizational productivity. The study recommended that management should enrich the job, and employee autonomy so that employees could be motivated and satisfied with their jobs which will enhance productivity and a great place to work, train and develop the employees so that they feel an obligation to pay back with more work efforts. There should be organizational climate and culture that foster job security and other long-term benefits so that employees will have the intention to stay which will enhance productivity, profitability, market share, and customer service delivery. Management should foster effective communication, and management/employees relationship, hence employee feedback would enhance job productivity.
Faith Prosper
Doctoral Candidate, Ignatius Ajuru University of Education, Nigeria
Amah, Edwinah (PhD)
Professor of Entrepreneurship & Management, University of Port Harcourt, Nigeria
Okocha, Belemenanya Friday (PhD)
Researcher, University of Port Harcourt, Nigeria
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Faith Prosper, Amah, Edwinah (PhD), Okocha, Belemenanya Friday (PhD), "Employee Engagement and Organizational Productivity: Theoretical Perspective" International Journal of Latest Technology in Engineering, Management & Applied Science-IJLTEMAS vol.11 issue 5, May 2022, pp.21-28 URL: https://ijltemas.in/DigitalLibrary/Vol.11Issue5/21-28.pdf
Blockchain applications are powered by smart contracts which perform crypto exchanges according to the policies set by developers. These transactions are free-of-conflict and transparent. Though at the end of day these are all computer programs which means they are not immune from bugs. In this paper We focus on most common and deadly vulnerability called re-entrancy, which has caused numerous DAO and DeFi attacks costing millions to organizations and end-users alike. We have researched all sub-types of re-entrancies and hence proposed a novel solution to mitigate them all by ensuring all state changes happen before calling external smart contracts and using function modifiers to apply mutual exclusion lock like protocol to prevent it. Moreover, we have also compared my solution with that of other solutions been proposed on scale of their gas cost efficiency.
Susmit Sandeep Patil
M Tech Student, Department of Computer Engineering, KJSCE, Ghatkopar East, Mumbai, India
Zaheed Shamsuddin Shaikh
Assistant Professor, Department of Computer Engineering, KJSCE, Ghatkopar East, Mumbai, India
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Susmit Sandeep Patil, Zaheed Shamsuddin Shaikh, "No Re-entrancy Guard: A novel approach for mitigating all types of Re-entrancy bugs and evaluating its efficiency" International Journal of Latest Technology in Engineering, Management & Applied Science-IJLTEMAS vol.11 issue 5, May 2022, pp.29-37 DOI: https://dx.doi.org/10.51583/IJLTEMAS.2022.11501
A wireless sensor networks consists of spatially distributed nodes randomly deployed in a given environment. It consists of a sensor, for sensing environmental phenomenon, a transceiver for communication purposes, an energy constrained power source and a small amount of memory used in storing programs that controls the operation of the nodes. Sensors in WSN are normally used to gather information from the environment, these data are then aggregated and sent to a base station. Due to the limited energy and memory capacity of the nodes it becomes imperative that the protocol needed to aggregate this data must be light weight so as to increase the network lifetime. It has been observed that clustering which can be defined as dividing the nodes in a network into groups can help to minimize the energy consumption of the WSN. The idea behind a clustering algorithm is that sensors in a particular group sends their data to a cluster head while the cluster heads send the aggregated data in the group to the base station instead of individual sensors sending their individual data directly to the sink. This paper proposes an improved, distributed, randomized clustering algorithm that organizes the sensors in a network into hierarchical groups. The algorithm is an improvement over the hierarchical clustering algorithm employed currently by researchers in literature. The algorithm proved to minimize the energy consumption of the network especially in a networks of thousands of nodes. We used results in stochastic geometry to derive solutions for the values of parameters of our algorithm that minimize the total energy spent in the network when all sensors report data through the cluster heads to the sink. Simulation experiments show an improvement of at least 15% over the hierarchical clustering algorithms used in comparison in reducing total spent in the network thereby prolonging the lifetime of the network
FAGBOHUNMI, Griffin Siji
Department of Computer Engineering Abia State University, Uturu, Abia State, Nigeria
Uchegbu Chinenye E.
Department of Electrical and Electronics Engineering, Abia State University, Uturu, Abia State, Nigeria
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FAGBOHUNMI, Griffin Siji, Uchegbu Chinenye E., "An Improved Hierarchical Energy Efficient Clustering Algorithm for Wireless Sensor Networks" International Journal of Latest Technology in Engineering, Management & Applied Science-IJLTEMAS vol.11 issue 5, May 2022, pp.38-48 URL: https://ijltemas.in/DigitalLibrary/Vol.11Issue5/38-48.pdf
Nnamdi Johnson Ezeora, Ogbene Nnaemeka Emeka, Rabiu B. Malam, Alexander Godwin Idemudia·May 2022·pp. 49-52
This paper helps in contribution towards distance learning via remote lab. The goal of this paper is to raise awareness of both students and lecturers for e-learning especially during Covid-19 pandemic. The proposed system OFDMA-RL for remote lab ensures the sharing of the lab equipment between multi-users at the same time. In this work, we did succeed to let locally two students work remotely at the same time with our eLab equipment. The system enabled us to conclude the feasibility and the efficacy of the technique OFDMA-RL. It encourages students to follow remotely courses and practical works. With this solution of the remote system, students can easily have access to their lectures, examinations and the use of laboratory equipment. This system enable decisions for the enhancement of infrastructures and also increased student access to equipment, a wider range of possible assignments or activities, and also brings hope for reducing costs and improving control education quality.
Nnamdi Johnson Ezeora
Department of Computer Science, University of Nigeria, Nsukka
Ogbene Nnaemeka Emeka
Department of Computer Science, University of Nigeria, Nsukka
Rabiu B. Malam
Department of Computer Science, University of Nigeria, Nsukka
Alexander Godwin Idemudia
Department of Computer Science, Federal University Wukari, Taraba State.
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Nnamdi Johnson Ezeora, Ogbene Nnaemeka Emeka, Rabiu B. Malam, Alexander Godwin Idemudia, "An Enhanced Remote Laboratory System For E-Learning" International Journal of Latest Technology in Engineering, Management & Applied Science-IJLTEMAS vol.11 issue 5, May 2022, pp.49-52 URL: https://ijltemas.in/DigitalLibrary/Vol.11Issue5/49-52.pdf
