Volume 15, Issue 4 (2022) | American Journal of Engineering and Applied Sciences

Setting up a Digital Twin Assisted Greenhouse Architecture

Antreas Kantaros — 2022-11-25

American Journal of Engineering and Applied Sciences, Published online: 25 November 2022; doi:10.3844/ajeassp.2022.230.238

The present article contains a study about utilizing the Digital Twins concept in the field of contemporary agricultural production. Through this study, an exemplary architecture has been developed re...

The Study of the Dynamics of a Cebâşev Manipulator

Relly Victoria Virgil Petrescu — 2022-11-28

American Journal of Engineering and Applied Sciences, Published online: 28 November 2022; doi:10.3844/ajeassp.2022.239.254

The paper presents a new method for determining the dynamic parameters of a Cebâşev conveyor mechanism, solvable in two steps. In the first step, the classic method of preserving the kinetic energy ...

Bio-Inspired Materials: Exhibited Characteristics and Integration Degree in Bio-Printing Operations

Antreas Kantaros — 2022-11-29

American Journal of Engineering and Applied Sciences, Published online: 29 November 2022; doi:10.3844/ajeassp.2022.255.263

In the last decade, additive manufacturing techniques, commonly known under the term "3d printing" have seen constantly increasing use in various scientific fields. The nature of these fabrication tec...

Low Reynolds Number Wing Design for Unmanned Aerial Vehicle: A Case Study

Mohammed El-Adawy — 2022-12-06

American Journal of Engineering and Applied Sciences, Published online: 6 December 2022; doi:10.3844/ajeassp.2022.264.273

With the widespread utilization of Unmanned Aerial Vehicles (UAVs) in many fields, it is essential to identify the parameters governing their design process. By taking the wing as a showcase, this stu...

Uncrewed Ground Vehicles (UGVs) and Nature-Inspired Designed Robot DIGIT and SPOT: A Review

MA Muktadir — 2022-12-05

American Journal of Engineering and Applied Sciences, Published online: 5 December 2022; doi:10.3844/ajeassp.2022.274.287

Researchers around the world are developing autonomous robot systems to assist humans with tedious, hazardous, complex, and time-consuming tasks. Today, autonomous robots are used for a variety of app...

Data Analytics for the Cyber Security of an Information System Based on a Markov Decision Process Model

Lidong Wang — 2022-12-07

American Journal of Engineering and Applied Sciences, Published online: 7 December 2022; doi:10.3844/ajeassp.2022.288.294

Intrusion detection is an important research topic in information systems and cyber security. Both a defender and an attacker detect and learn about each other during an intrusion process. The defende...

Universal Singular Optimal Control: Affine Systems

Andres Gabriel Garcia — 2022-12-14

American Journal of Engineering and Applied Sciences, Published online: 14 December 2022; doi:10.3844/ajeassp.2022.295.302

In this study, the problem of finding an optimal controller for nonlinear systems with one input and a reference tracking signal is approached. With the problem's formulation, any desired signal can b...

The Study of the Dynamics of a Basic DoF Robot

Relly Victoria Virgil Petrescu — 2022-12-16

American Journal of Engineering and Applied Sciences, Published online: 16 December 2022; doi:10.3844/ajeassp.2022.303.315

The paper presents the study of the dynamics of a general DoF robot, highlighting some important new aspects in the dynamic design of a certain DoF robot. An improved method of positioning the robot i...

Design and Analysis of a Helium-Assisted Hybrid Drone for Flight Time Enhancement

Geronimo Macias — 2022-12-23

American Journal of Engineering and Applied Sciences, Published online: 23 December 2022; doi:10.3844/ajeassp.2022.316.330

In this study, a new design of a helium-assisted hybrid drone is proposed for flight time enhancement. As is widely known, most of the drones with a Vertical Take-Off and Landing (VTOL) feature have a...

A Secure Unicast/Multicast Authentication and Key Distribution Protocols for Smart Grid

Samah Mohamed Sayed — 2023-01-04

American Journal of Engineering and Applied Sciences, Published online: 4 January 2023; doi:10.3844/ajeassp.2022.331.343

This study discusses the problem of key distribution protocol in IoT systems especially smart grids for two modes of communication: Unicast and multicast. In the present paper, we suggested two protoc...