Industry 4.0 is directly connected to the Internet of things, cyber-physical systems, artificial intelligence, robotics and other advanced technologies. It is these technologies that made fully automated digital production, controlled by intelligent systems in real-time with constant interaction via the Internet, a reality. They turned the production system into a “smart network factory”, where all activities are digitally controlled, and the use of financial and material resources becomes more efficient. Along with this, in Industry 4.0, a significant increase in data volumes brought to the forefront data protection issues, including in such a sensitive area as personal data. Illegitimate methods of using personal data to obtain additional preferences have become the goal of some communities of people. Video surveillance data are an integral part of personal data, therefore protection of personal data processed in video surveillance systems has been given increased attention. The video surveillance system includes video cameras, information and communication channels for data transmission, processing devices, analytics and personal data storage. The proposed model is a subsystem of smart video surveillance in the oil and gas sector, that consisting of such subsystems as a smart field, smart grid, smart maintenance, smart transportation, smart security, etc. Conceptual tasks are considered and recommendations for their solution are given.

Supervisory Control and Data Acquisition system facilitates the monitoring and control of industrial process from the designated control station. The cost investment for implementing the SCADA system is expensive and is not in approach of small and medium scale industries these days. Developing the customized SCADA system helps to reduce the cost in software components and becomes more close approach to the small and medium scale industries. In this research we presented a SCADA software developed in C# environment and successfully tested in industrial process monitoring and control. The developed SCADA software is capable of remotely supervise, control and data monitoring facility and is also capable of data logging in the IoT server. This approach has been found to be efficient in both aspects, technically and economically.

Thin film solar cell along with enhanced absorption property will be the best, so combination of SiGe alloy is considered. The paper presented here consists of a numerical model of Si/Si1−xGex heterojunction solar cell. The addition of Ge content to Si layer will affect the property of material. The research has investigated characteristics such as short circuit current density (Jsc), generation rate G , absorption coefficient (α), and open circuit voltage (Voc), power, fill factor (FF) with optimal Ge concentration. The speculative determination of appropriate germanium mole fraction is done to get the maximized thin-film solar cell efficiency.

The society is blessed with diverse natural resources such coal, oil and water. The significance of water to lives cannot be over-emphasized. The benefits of water include but not limited to an increases in provision of energy, promotes healthy living and regulate body temperature. In schools, the benefits of water are useful in the laboratories for chemical reactions, fish farming and irrigation system. However, the wastage of water by individuals has been evident in the society. For people that are used to electromechanical pumping machine to fetch water; they used to forget to switch off the machine after the water tank might have been filled. The consequences of over-flowing include flooding and weaken of the building foundation. In this technological era, many automatic systems have been developed to control the flow of water into the containers or water tanks. A contactless water level controller system was developed as a demonstration and application of educational sustainable development in Nigeria Certificate in Education (NCE) curriculum. The curriculum was aimed at encouraging the students to be up-to-date of relevant development in computer science and for the students to be able to impact the knowledge acquired to the young ones. Advanced programming is one of the course contents which involve learning C++, Java, C+ and Visual Basic at NCE level so as to be able to design and implement some application that will be of beneficial to the students and society at large. The controller work on the principle of signals transferred or received by the ultrasonic sensors. It consist of power supply, controller unit, ultrasound, display unit, water pump and water tank while C++ programming language was used and edited by using C++ Crimson editor. The system was installed outside the water tank. The sensor switched ON the motor pump when the water level is below 45cm and again switches OFF the motor pump when the water level is above 45cm. The system has low maintenance and installation cost which is more efficient. Also, electrical power wastage was successfully managed as the motor pump shut down when the water level reaches the desired level thereby reducing the cost of electricity bills for the user. The System was designed, implemented and tested to ascertain its working and viability practically to allow the students of computer science acquire relevant skills in programing language as outlined in the curriculum and to achieve and enhance capacity building. The finding of this research included acquisition of programming skills for implementation of automated system.

The removal of hexavalent chromium [Cr(VI)] is a challenging task due to its acute toxicity even at low concentration. In the present study, a low-cost activated carbon (LAC) was prepared from desert date seed shell by chemical activation with H3PO4 and utilized for the removal of hexavalent chromium from aqueous solution. Batch experiments were conducted to investigate the influence of operating variables such as pH, contact time, adsorbent dosage, initial concentration, co-existing ions and temperature. The amount of Cr(VI) adsorbed was found to vary with solution pH and maximum adsorption was observed at a pH value of 2.0. The extent of chromium uptake (mg g-1) was found to increase with increase in initial concentration and contact time. The applicability of the four isotherm models for the present equilibrium data follows the sequence: Freundlich > Temkin > Langmuir > Dubinin-Radushkevich. The mean free energy from the Duninin-Radushkevic isotherm model hinted that the adsorption of Cr(VI) onto the adsorbent surface follows physisorption mechanism. Thermodynamic parameters related to adsorption, Gibbs free energy change (∆G°), enthalpy change (∆H°), entropy change (∆S°), were also calculated and the negative value of ∆H° indicates the exothermic nature of the adsorption process. The considerable adsorption capacity of 99.09 mg g-1 is a signifier of the suitability of the prepared adsorbent for commercial application. The findings implicated that the adsorbent can be employed in the treatment of Cr-bearing water and wastewater.