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Promoting construction, enhancing safety and multiple functions of IoT. Since the beginning of Fourth Industrial Revolution, digitalization becomes a fundamental function of all the construction project and bring all the project to a brand new practical and efficient world. IoT (Internet of Things), which refers to a large network of connected sensors and devices capable of autonomously exchanging and analysing data in real-time, belongs to a major facilitator of this function. To have an idea of the importance of this technology in the construction field, one must think about it as an instrument to decrease labour cost, reduce project repair time, and save material cost by automating and networking process. Among these could be automated assessment of a construction site to alert about hazards that might affect workers’ lives. IoT alarms and delivered insights reduce risks and keep the working place of the construction workers safe. Overall, it is claimed in the paper that IoT has a significant number of applications in the construction sector- starting from the project management to the quality testing of work. These are just some of the applications of IoT and as the field evolves, more benefits and value-added services would be seen arising. In this regard, IoT will also have a key role in communication and coordination between many stakeholders involved, hence creating collaboration and cooperation for a healthy conductive environment with openness among all. Its integration with latest technologies like digitization of data, data analytics, AI, facilitate predictive maintenance decisions and end up making less mistakes. Although there is a huge potential for IoT to develop in the construction industry, so far, it is not utilised in a large scale. There are some limitations to be reduced like the cybersecurity, interoperability, and workforce readiness among others that need to be addressed or enhanced in due time. Industry participants must join hands to overcome these issues. It would be an understatement to say that IoT has the ability to completely revolutionize the construction industry. In article it illustrates how the Internet of Things is transforming the building sector and offers guidance on how interested parties can take advantage of this technology to raise project sustainability, output, and safety. By adopting innovation and digitization, those involved in the construction industry can take advantage of new moves for efficacy and efficiency in systems performance.

The maintenance of student attendance at a facility is a challenging endeavor. The attendance is manually inputted, making it easily manipulatable. To effectively monitor and control student attendance in a setting, this research intends to build an intelligent attendance system with a sustainable approach to the problem. This study indicates employing RFID and IR sensors to automatically take attendance. Data can be viewed and stored in a real-time database using RFID (Radio Frequency Identification). The firebase database/google sheets are updated when the student’s card is brought close to the RFID module. Additionally, an IR sensor is employed to keep track of the overall number of students entering and leaving the classroom. It would be useful to know how many students are in the class overall, and how many students are in the class overall would be displayed on the LCD outside the class. The outcomes of the research on student attendance will be communicated to the parents, and the number of students in attendance overall will be forwarded to the higher representatives of the institutions. The system alerts the user if there is any discrepancy between the number of RFID tags scanned and the total number of students present in the classroom. The teacher must manually rectify the attendance error after the disparity in the count reveals the proxy in attendance. Future expansion of this research may include the use of biometrics and face recognition to detect the proxy and open up the possibility for a more sustainable environment.

Recent advancements in wireless sensor networks (WSNs) and precision agriculture have captured significant interest in both research and industry. Integrating WSNs into agriculture offers numerous benefits, including enhanced crop quality, improved production efficiency, resource conservation (water and energy), and optimized crop management practices (such as irrigation and fertilization). Irrigation, a crucial factor for agricultural success, is often hampered by current systems’ inefficiencies and rising production demands. Water scarcity, drought, and limited water resource waste further complicate conventional irrigation. To address these issues, we propose an intelligent irrigation system prototype that combines WSN technology with drip irrigation. This system utilizes WSNs and ZigBee wireless communication to create an automated and intelligent irrigation solution that conserves water, enhances irrigation system performance, and improves efficiency. Sensor data collected from strategically placed sensors near plant roots (including temperature and soil moisture) is used to control irrigation. The system analyses this data against predefined thresholds for each parameter and activates or deactivates irrigation accordingly. This approach aims to achieve significant water, time, and energy savings.

The electrical energy is very necessary to address all household needs and commercial needs. This energy is used all over the world for almost all purposes. It is diminished day by day as fossil fuels are used for energy production. As natural resources are limited and getting exhausted, there is every need to conserve energy. It even involves in rising up pollution and increasing the global temperature by emitting greenhouse gases. It shows severe impact of climate. This paper explains the term energy conservation, methods to conserve energy, use of energy efficient devices and also how energy efficient devices are chosen for various purposes. This paper even focuses on net zero energy buildings and explains a methodology for arranging lights and blind control for windows in net zero buildings to conserve energy.

The efficiency of the photocatalytic degradation of dyes and dyeing industry pollutants on immobilized photocatalysts can be improved by addition of hydrogen peroxide, due to its photocatalytic decomposition on TiO2. Experiments were carried out with two azodyes, Acid Orange-7 (AO-7) and Tartrazine (Tart), with 3-nitrobenzenesulfonic add (3-NBSA) which s a chemical intermediate in the dye industry and with real industrial wastewaters, using a thin-film fixed bed reactor. The effect of hydrogen peroxide is only significant for concentrations higher than 5x10-3M (170 mg l-1). [ABSTRACT FROM AUTHOR]