March 2015 (Journal of Modern Science and Technology)

March 2015 (Journal of Modern Science and Technology)

Total Articles - 11

Pages 1-19

Author: Sayed Ahmed and Farid Ahmed

Architecture is not an abrupt phenomenon; rather it was an adoption of creativity throughout the development stages of human being; where humanity finds its relation with greater surroundings. This ‘understanding’ involves observations; range from herbal treatments provided by native fauna, impact of climatic changes in different seasons to the vast imagination of astrology. The maxims related to vernacular architecture, belongs to subaltern astrologer Khona; which reflect human nature in general, suggesting that the composer or composers were intimate to this land and were acquainted with the ways of life here in Bengal. This paper suggests that agriculture, health concern and architecture should ‘response’ to establish a goal for the betterment of mankind, exactly somewhat concerned meticulously by Khona; which can be referred as today’s well-known sustainability. How this same thought was felt by this wise lady over a millennium ago? And surprisingly, why people of this fertile delta bore her legacy by these simple maxims throughout centuries? Thus this practice of thousand years should not be overlooked. The objective of this research is to reveal the truth that the land should be proud to practice its own architecture according to this ancient Wise’s knowledge. In addition, it may try to indicate some possible outlines for both contemporary practice and academic curriculum.

Pages 20-30

Author: Ashish M. Husain, Shajib Yusuf, Tazrin Hassan Rini and Mahady Hasan

This study attempts to build awareness to the noise pollution level of our city and also cultivate the areas of Dhaka city that are prone to health and environmental hazards in terms of noise pollution, by taking readings of certain locations in Dhaka city (Residential and commercial), and comparing it with the standard stated thresholds of DOE (Bangladesh department of environment). The purpose here is not only to analyze how good or bad the current noise level is but also to understand exactly why this situation should be taken seriously. We also found a pattern that suggested that noise pollution differed according to the time of the day. At the end a small proposal is placed, suggesting how we can use a miniature palm sized computer to record sound from places that are prone to health hazards. This will help keep a log of sound and help understand the situation of noise pollution we are having and may have in the future. It will also help in keeping sound files for analysis, and engage concerned people to keep a log of sound levels at a daily basis. Moreover, the analysis from the raw file can be used in traffic management system as well because most of the time, noise pollution occurs due to bad traffic management and due to vehicles not being maintaining. The major question is, do we have enough data collecting mechanisms to make such changes efficiently? We shall help resolve this matter.

Pages 31-39

Author: Rumana Rashid

Energy conservation is the practice of decreasing the quantity of energy used. Energy conservation may result in increase of financial capital, national security, personal security, and human comfort and also to increase environmental value. Use of fossil fuels contributes to air and water pollution and also global warming of the earth. This is why the human settlement pattern that supports contemporary civilization must become the focus of every energy consumption and energy conservation discussion. Because of the limited amount of nonrenewable energy sources on world, it is important to conserve our current supply or to use renewable sources so that our natural resources will be available for future generations. Dhaka, capital of Bangladesh is one of the most electricity deprived cities in the world. Despite large potential for renewable energy sources in Bangladesh, currently their contribution to the electricity supply remains insignificant. The aim of the research is searching for alternate technology such as use of solar energy to preserve the limited resources of Bangladesh. The research select some case study was done in suburban areas of Bangladesh. Result shows that the Bangladesh, has very limited natural resources, application of renewable energy should become one of the pioneers in the energy regeneration especially for rural. Architects have a bright prospect to become the leaders in this journey towards saving the world from energy exhaustion.

Pages 40-46

Author: Md. Shahadat Hossain and K. M. A. Salam

Electrical assessment for safety is a recognized tool in the Occupational Health & Safety Management System Standards and in demonstrating due diligence to Occupational Health & Safety Regulations. By this system identifying potential electrical hazards to prevent or minimize the loss of life and property is perceived seriously. In this paper we have studied the requirements not only to reduce the risk of potential breakdowns and unplanned maintenance but also to bring further added value benefits in reducing repair costs, extending equipment life and improving operational efficiencies to follow a proper way of electrical safety audit. By focusing on a wider spectrum of inspection, testing methods and operational reviews in design of a power system is an assessment in safety and functional performances correctible and perfectible during its life cycle with risk and quality management. This paper provides the Electrical Safety Audit Process and considered several aspects of electrical audit system.

Pages 47-63

Author: Mohammad Rezaul Islam and Hasib Iqbal Mamun

The present system of energy metering as well as billing in Bangladesh which uses electromechanical and digital energy meters are error prone and inefficient to some extent. Still, the Bangladeshi power sector faces a serious problem of revenue collection due to energy thefts and poor management of vital energy usage information. The aim of this project is to minimize the hassle related with electricity billing and energy wastage by taking enough data of usage amount of electricity and making it available to end users and suppliers using appropriate wireless technology. We are going to develop a low cost energy meter that records & displays the consumption of electrical energy real time in households, offices or industries provided with communication and information technology. The project also aims at proposing a system that will reduce the loss of power and revenue due to power thefts and other illegal activities. The implementation of this project will help in better energy management and in solving the unnecessary hassles for incorrect billing. The device is named as “Energy Understanding Device (EUD)” which will provide almost all necessary information about usage of electricity to the supplier and the customer as well.

Pages 64-79

Author: Rahat Yasir, Shariful Islam Nibir, Zarmeen Ahmed Chadni and Nova Ahmed

Telemedicine is the process of delivering service and exchanging information related to health care issues across distance. Telemedicine is all about a procedure or system where patients get help from doctors at home. Interaction between the patient and the doctor through different media like, audio, video, video call, image and information exchanging by web, mobile and internet technology is also a mean of telemedicine. In this paper we are presenting a telemedicine model which we are developing in the context of Bangladesh. We have designed the system by taking feedback from people of every profession of Bangladesh. As the poor people are the main sufferer of health related issues, so we have mostly emphasized on their thoughts and feedback.

Pages 80-87

Author: Md. Abdullah Al Asad, Md. Al Muzahid and Md. S. Faruk

The rapid change in the wireless communication service and technology has made it possible to decrease the cost for communication and also to incorporate this technology with our daily life. Based on SMS/GPRS mobile device and embedded module including the self-organized home automation system, it can be integrated to allow the user end to control the home appliances and devices and to monitor the home surveillance system. In this paper a new concept of using a small mobile phone as a handy device for user to control any home autonomous system is demonstrated. A communication module with a microcontroller enabled system in sync with the cell phone to send commands and receive alerts through the complete system was used. The system for home surveillance arrangement and merged the fire smoke detector with the whole microcontroller module including the SMS sending and receiving process is designed.

Pages 88-101

Author: Narzu Tarannum, Md. Khalilur Rhaman, Sabbir Ahmed Khan and Shifur Rahman Shakil

To ensure the food security it is imperative for all countries to consider on agriculture sector in high priority as numbers of people are increasing in every year but the agricultural field remains same. As a result robotics and automation systems are extensively applied to agricultural sector. Several motivations are behind the investment to incorporate robotics in agricultural sectors like decreasing labor forces, saving time and cope up with the high product demand. Apart from those, increasing food quality, production security and finally reducing end product cost are also vital parameters for automation revolution in agriculture. Moreover, farmers are getting exemption from extensive physical effort. In fact, those phenomenons are especially considerable and important for developing countries such Bangladesh. This research represents a review on some common robotic technology that is used in agriculture sector of Bangladesh and also other developing countries. In addition to that, this research also discuss about technical point of view regarding advantages and disadvantages of those agro-based robots and way to improve that technology considering particular country farming situation. A review on recent agro-based robotic technology used in developed countries is also presented here. Finally, future scope of utilizing those advance technology in similar areas in Bangladesh has been discussed.

Pages 102-116

Author: Sadia Afrin, Md. Maksimul Islam and Md. Mujibur Rahman

Dhaka, the capital of Bangladesh, has experienced water logging for last couple of years as the storm water drainage systems are often unable to manage peak runoff volume. Moreover, precipitation intensity and pattern are expected to be altered due to climate change and such changes are likely to lead to severe flooding in urban areas of Bangladesh. This study aims to assess the effect of climate change on flow of Hatirjheel- Begunbari Khal storm water drainage system as it is considered one of the major drainage channels of Dhaka city. As Hatirjheel works as a large storm water detention area and also a regulatory system, different scenerios are considered while assessing the future flow. The rational fromula was used to assess the flow instead of hydrologic model due to lack of observed flow data for calibration and validation. The study involves DEM based catchment delineation using GIS. The DEM was reconditioned prior to catchment delineation to create a channelization effect intended to mimic the existing storm sewer network of the city. A future land use scenario is considered based on the analysis of land use maps of three different time interval for determining future runoff coefficient. The peak rainfall intensity is obtained from the IDF curve of Dhaka city developed considering the future precipitation data of a climate model. Although Hatirjheel is found to be an effective retention and regulatory system to minimize the flow, result of this study shows an alarming increase in flow in future which might cause severe flooding in the surrounding area.

Pages 117-124

Author: F.A. Samiul Islam

Engineers are recognized to be one of the major actors of development. As the custodian of build environment, Engineers have to be well equipped with the recent concurrent issues for exploring technology, wisdom and insight to serve the nation. Professional institutes are the platform of the technology for exchange, sharing and extension of knowledge management. Bangladesh has been recognized as the worst victim of climate change. Climate change issues should be incorporated in future infrastructural development policy which largely vested upon the engineer’s community. The issues encompass transport management, promotion of renewable energy, compact city development, and travel demand management, promotion of green space, green building, and promotion of pedestrian facilities, roof top gardening and many other issues. The study signifies that Engineers pose a strong functional relationship to facilitate the holistic system for promoting climate change induced infrastructural development, renewable energy, roof top gardening and promoting green space by imposing FAR rules properly. The study was conducted based on both primary and secondary information collection, compilation, analysis and representation. Among various concurrent issues, this paper focuses on the selected issues which is being prepared to analyze and represent the role of engineers for incorporated those issues in future development planning.

Pages 125-134

Author: Mohammad Taimur Rahman, Morshed Khan and Mokarrabin Hossen Khan

It is an automated vehicle safety system that can assist during journey to prevent expected forward collision. This collision avoidance system includes a sensor arrangement to detect front vehicle(s). The arrangement is powered by an ultrasonic motion sensor to receive information from the detected object (e.g. Vehicle), this processed information force the brake paddle through a motor if equipped vehicle is in the proximal distance at which collision is imminent. Brake shall continue unless the distance increases to a safe level.

Total Articles- 11

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