Assam Don Bosco University Journals
Not a member yet
795 research outputs found
Sort by
Energy Efficiency in Green Building to Achieve Sustainability: A Review
No full textAt present, the building and construction industry is one of the major economic activities in India. It is estimated that the construction industry has contributed around 8.1% to India’s GDP in 2010-11 up from around 5.1% in 1999-2000. One survey indicates that construction area in India will boom 5-fold from 20,000 million sq. ft in 2005 to over 100,000 million sq. ft in 2030.This increase will put massive pressure on diverse resources such as energy, water, minerals and could have a discernible influence on the environment. Faced with an increasingly scarcity of resources, there was an increasing focus on “green construction as solution”. As a result, India has emerged as one of the world’s top destinations for green building and has implemented a number of homes rating schemes and building codes, which open up a wide range of opportunities in construction, architecture and engineering design, building materials and equipment manufacture. The building sector alone consume around 35% of the energy. Hence by considering the situation by using the sustainable green materials for construction lessen the electricity call to a certain extent. By using more and more of the conventional building materials along with causing global warming also affects the natural resources. By Green or sustainable construction means the use of key sources like energy, water, materials, and land in the most efficient way than homes which can be simply constructed conventionally
Experimental Study of Low Cost Multiple IMU Based Open-source Motion Sensing Platform for Data Logging in Seismic Shaking Table Test
Get PDFMicro-electro-mechanical systems (MEMS) based inertial measurements units (IMUs) have become very popular in recent times because of low cost, small size and non-invasive nature. One of the major domains of its use is design of wearable sensors for human motion sensing and analysis. As a result, number of open-source motion sensing hardware and software platform have come up. This paper presents experimental study of one such open-source wearable motion sensing platform, Oblu, for measuring structural response of models in seismic shaking table test. Required customization of open-source platform to meet needs of data logging in seismic shaking table test is discussed. Also, the details of post-test data processing and analysis done on another open-source platform Scilab is discussed. To compare the results of experimental study, analysis of similar model, subjected to identical test conditions, is performed using Structural Software for Analysis and Design SAP2000. The study shows potential of using low cost open-source motion sensing platform in comparison to expensive and proprietary accelerometer based data logging systems conventionally used for seismic shaking table tests
Review study of recycled aggregate with different cementitous material
Get PDFAbstract: In the last few decades due to the steadily expanding growth of infrastructure, sustainable and financially attainable concrete has been acquired extraordinary consideration for the researcher and various civil engineering department. The present work represents a literature review of different cementitious material that is used in making concrete with the recycled aggregate that helps in developing the sustainable environment. This paper is mainly focused on sustainable concrete in which the different properties i.e. Mechanical Strength, acid attack, sulphate attack, carbonation test concrete of concrete have been reviewed. The X-Ray Diffraction (XRD) results of different cementitious material are also reviewed that is beneficial for many researcher and scholars. The Interfacial Transition Zone (ITZ) structure of different cementitious material is also studied. Using recycled aggregate concrete it’s a friendly and new solution for regularly depleted material rather than the ordinary aggregate. It is also indicated that the compressive strength of the concrete decreases by increasing the percentage of recycled aggregate (RA) that promotes the researchers to use various cementitious materials in concrete. This review paper may be recommended for further studies by a researcher in many countries
Analyzing the energy efficient path in Wireless Sensor Network using Machine Learning
Get PDFAs the sensor nodes are energy constrained, an important factor for successful implementation of a Wireless Sensor Network (WSN) is designing energy efficient routing protocols and improving its lifetime. Network life time has been described in many ways such as the time when the network lost its connectivity or the time when the first node gets disconnected. Whatever may be the description, the main focus of many researchers is to design algorithms that enable the network to perform continuously for a longer duration. So, improving the energy efficiency and increasing the network lifetime are the two key issues in WSN routing. Because of the intelligent nature and learning capacity, reinforcement learning (RL) algorithms are very suitable for complex distributed problems such as routing in WSN. RL is a subclass of Machine Learning techniques. It can be used to choose the best forwarding node for transmitting data in multipath routing protocols. A survey has been made in this paper regarding the implementation of RL techniques to solve routing problems in WSN. Also, an algorithm has been proposed which is a modified version of original Directed Diffusion (DD) protocol. The proposed algorithm uses Q-learning technique which is a special class of RL. Also, the significance of balancing the exploration and exploitation rate during path finding in Q-learning has been demonstrated using an experiment implemented in python. The result of the experiment shows that if exploration-exploitation rate is properly balanced, it always yields an optimum value of the reward and thus path found from source to the destination is efficient
Controlling Home Appliances by IR Remote Control using Arduino Uno
Get PDFIn today’s world, the requirement of controlling appliances is necessary to reduce human effort and utilize a maximum of the technology and doing it everything smartly and efficiently. With the increase in population, consumption of energy is also increasing and there is a need to conserve energy in every possible way either outside or inside the surrounding atmosphere. This paper discusses an emerging idea whereby only a single device can control various home appliances such as switching ON and OFF of appliances or loads. A single remote control is used to control several appliances, achieving a simple low-cost home automation system. In the proposed scheme, a circuit has been built that meets the requirements to control the house appliances through a remote-control device, portable in all parts of the room, and controlling appliances such as TV, fans, bulbs, heaters, etc
An approach for improvement of voltage stability condition of a power system using Combination of Power Flow Controllers
Get PDFThis paper presents an approach for using Combination of Power Flow Controllers (COPFC) to improve voltage stability condition (VSC) of a selected bus of a multi-bus power system, which is appeared to be vulnerable to Voltage Instability Problem (VIP). Voltage Stability Index (VSI)-L [1] is used to identify the vulnerable bus of a power system as regards the VSC of the system is represented by the VSI-L of the bus. It is proposed to improve the VSI-L of the vulnerable bus by modifying power flow through a COPFC device available in a transmission line of the power system. For this purpose, sensitivity relations for change in VSI-L of the vulnerable bus and change in power flow through a COPFC device have been derived. Using these sensitivity relations, the power flow of the COPFC is modified to improve the VSC of the vulnerable bus. IEEE 30 and IEEE 118 bus test systems are used to validate the proposed approach
Field Pattern computation using 2 - D FFT for Microstrip Reflectarray Antenna
Get PDFA Microstrip Reflectarray antenna as a planar array antenna is examined in this study effort. The basic original design requires that the phase of the field reflected from a Microstrip Reflectarray element be set so that the overall phase delay from the feed to a fixed aperture plane in front of the Reflectarray is constant for all elements. The array factor and element pattern product are displayed in the overall electric field pattern expression. The arrangement of Microstrip Reflectarray antenna and feed has been placed in prime focal axis. Amplitude tapering is used to improve the main beam's field strength by lowering the side lobe levels. The comparative numerical analysis of computing field pattern normally as well as using 2-D FFT of n x n elements of the Microstrip reflectarray antenna is carried out using MATLAB codes. It is shown that MATLAB simulation time with FFT is much shorter than simulation time without FFT
Intensity-based Macro-bend Plastic Optical Fiber Sensor using Raspberry Pi Platform
Get PDFThis paper presents an optical fiber sensor-based instrumentation system to measure the light intensity due to different refractive indices. The proposed sensor system consists of (i) He-Ne Laser as a source (ii) Fiber optic cable (iii) CCD camera to capture the intensity (iv) Raspberry Pi using phyton for processing. The optical fiber is bent into different radius and the intensity is captured every time the fiber is bent by the CCD camera. The Raspberry Pi use the phyton codes to process the captured intensity and plot it in the Gaussian curve. This sensor can be used for sensing the intensity of different solutions with different refractive indexes