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1 Dust Ion Acoustic Solitary Waves in Multi-Ion Dusty Plasma System   ,   Kazi Asraful Islam1*, F. Deeba2, and Md. Kamal-Al-Hassan3   1Dept. of Textile Engineering, Sonargaon University, Dhaka-1212, Bangladesh; and 2Dept. of Physics, Dhaka University of Engineering & Technology, Gazipur-1707, Bangladesh *Correspondence: kazinooman@gmail.com  
  A theoretical work has done to observe the existence of dust ion-acoustic (DIA) solitary waves (SWs) in a multi-ion dusty plasma system consisting of inertial positive and negative ions, Maxwell’s electrons, and arbitrary charged stationary dust. In this short communication, our research declares that with these components the derivation of Korteweg-de Vries (K-dV) and mixed K-dV (mK-dV) is possible. Here reductive perturbation method has been employed in all these approaches. The first K-dV equation has been derived which gave both bright and dark solitons but for a very limited region. Then the mK-dV equation has been derived that gave bright soliton for a large region, but no dark soliton has been observed.  
2 Hybridization of Vigenere Technique with the Collaboration of RSA for Secure Communication   ,   Md. Tarequl Islam1* and Md. Selim Hossain1   1Department of Computer Science and Engineering, Khwaja Yunus Ali University, Sirajgonj, Bangladesh *Correspondence: tareq.cse@gmail.com  
  The security factor is one of the major concerns in today’s world. As security is the breath of communication, as much as we can make our communication system secure, the system will be more trustworthy and be more restricted to snap as well as can save guard from the unauthorized attempt. Either symmetric or asymmetric encryption was used in the earlier method to ensure data security. However, any of them alone makes the system either unsecured or time-consuming. In our thesis work, we have used both the techniques together to make the system as much as reliable and also to make it faster using the hybridization of asymmetric RSA encryption and symmetric modified vigenere technique. This hybridization method sends the vigenere table as an encrypted string using an asymmetric process with the collaboration of the RSA encryption algorithm where the string will be encrypted by the public key generated by the receiver. Later the string will be decrypted using the receiver’s private key. Therefore, we can claim that the extended vigenere method with the collaboration of RSA makes the overall communication more secure, stable, reliable, and faster.  
3 Assessment on Climate Change Adaptation: A Study on Coastal Area of Khulna District in Bangladesh   ,   Md. Anwarul Islam1*, Md. Shamsuzzoha2, Md. Rasheduzzaman2, Rajan Chandra Ghosh2, and Md. Faisal3   1Faculty of Disaster Management, Patuakhali Science and Technology University, Dumki, Patuakhali-8602, Bangladesh; 2Department of Emergency Management, Patuakhali Science and Technology University, Dumki, Patuakhali-8602, Bangladesh; 3Department of Disaster Resilience and Engineering, Patuakhali Science and Technology University, Dumki, Patuakhali-8602, Bangladesh.  *Correspondence: islam1973505@stud.kuet.ac.bd  
  Bangladesh is likely to be one of the most vulnerable countries in the world to climate change due to geographical location and geo-morphological conditions. Bangladesh experiences extremely disastrous situations like a cyclone, flood, saline water intrusion, waterlogging, heavy rainfall, river erosion, storm surge, etc. that occur frequently in the coastal part of Bangladesh. This results in a huge loss of lives, damages properties, and degrades the integrity of the environmental components. This study was conducted on 2 villages (Chotta Chalna and Shivnagar) of Dacope Upazila of Khulna district with the purpose of assessing existing climate change adaptation scenarios and techniques for mitigating climate change-related risks. Necessary data were collected from various sources namely direct household survey, focus group discussion, and key informants interview and from various journals, related thesis papers. About 46% of the respondents cited cyclone is the most terrific type hazard and 17.33% of respondents cited salinity intrusion is the second devastating type hazard that they faced. The results show that the study area climate change risks are very high and existing climate change adaptation techniques are not effective enough to mitigate the risks. Sustainable climate change adaptation strategies are much needed to mitigate the climate change risks of the study area.   
4 Comparison of the Quality Parameter between Cotton and Melange process   ,   Rezaul Karim1*, Abdur Razzak1, A.K.M. Mahabubuzzaman2, and A Shahid3   1Dept. of Textile Engineering, Sonargaon University, Dhaka, Bangladesh; 2Bangladesh Jute Research Institute, Dhaka, Bangladesh; 3Dept. of Textile Engineering, Dhaka University of Engineering & Technology, Gazipur, Bangladesh  *Correspondence: rezatex99@gmail.com  
  The comparison of the quality parameter between Cotton and melange processes for different count and melange ratios have been studied. Here the yarns are produced from Indian cotton, Australia cotton, US cotton, China Black Viscose, and Indian Black Viscose (Melange). During the project work, different properties for the different machines in the same setting and ratios have been observed. All observations have completed by the latest model LMW (LR 9/AX) Auto Doffer Ring Machine. The quality parameters, for instance, mass irregularity (U%, CVm%,) Imperfection index (IPI), Count Strength Product (CSP), and hairiness were tested and then analyzed. For melange yarn, for different ratios, the best results have been given by 100% cotton yarn, because there is no blending between two different fibers. The quality parameter and characteristics have been presented for different types of fiber (100 % cotton, Black Viscose) and produced yarn (100 % Cotton, 5% Melange, 10% Melange, and 15 % Melange ratio) from the fiber. The productivity of melange yarn base on different condition is increased than 100% cotton yarn.  
5 Influence of Potential Differential Voltage on Electric Resistance of Needle Punched Non-Woven Jute Fabrics   ,   Sharmin Akter1, Tahnin Bintay Kamal2, Mahmuda Khatun3, Md. Mahbubul Alam3, Md. Zobaidul Hossen4, and Rezaul Karim5*   1Textile Physics Division, Bangladesh Jute Research Institute, Dhaka, Bangladesh; 2Mechanical Processing Division, Bangladesh Jute Research Institute, Dhaka, Bangladesh; 3Product Development Division, Bangladesh Jute Research Institute, Dhaka, Bangladesh; 4Microbiology Department, Bangladesh Jute Research Institute, Dhaka, Bangladesh; and 5Dept. of Textile Engineering, Sonargaon University, Dhaka, Bangladesh.  *Correspondence: rezatex99@gmail.com  
  In this research, the electrical resistance of needle-punched non-woven jute fabric at different input voltage was measured. Here, to determine the electrical resistance, a device named the digital impedance meter has been used. The specific resistance for the different gauge lengths of non-woven jute fabric has been observed to enhance the use of jute fabric for electrical purposes. It has been observed that the electrical resistance increased with the higher value of gauge length and decreased with the increase of input voltage.  
6 Impact of Weather on Crops in Few Northern Parts of Bangladesh: HCI and Machine Learning Based Approach   ,   Md. Toukir Ahmed1*, Md. Niaz Imtiaz1, and Nurun Sakiba Mitu1   1Department of Computer Science and Engineering, Pabna University of Science and Technology, Pabna, Bangladesh *Correspondence: toukirahmedreal@gmail.com  
  As Bangladesh is an agricultural country, the economy, as well as the food security of this country, mostly depends on the production level of different crops over the year. Therefore, there exists immense pressure on exaggerated crop production due to the fast growth of the population. But, the average production level is being hampered by the bad nature of the weather. We have conducted a survey on near about 100 farmers of two northern districts of Bangladesh: Pabna and Rajshahi and assessed the impact of rough nature on production. According to farmers and agriculturalists, it is noticed that rough weather causes about 30% to 70% production shortage than expectation with all other factors remaining constant. In this study, we have adopted Human-computer interaction (HCI) based approach (Soft System Methodology-SSM) to this aspect for efficacious collaboration with root-level farmers and agricultural trainers providing ease for understanding weather-related issues on the production of crops. Finally, some machine learning algorithms were also implemented on the obtained dataset to accurately classify the range of production level of rice and a comparison is made among the algorithms based on performance metrics. Moreover, an android based application is created to depict the summary of the study.   
7 The Trend of Different Parameters for Designing Integrated Circuits from 1973 to 2019 and Linked to Moore's Law   ,   Nashmin Alam1 and Murshed Alam2*   1Department of Electrical and Electronic Engineering, Bangladesh University of Business and Technology, Dhaka, Bangladesh; and 2Department of Farm Power and Machinery, Bangladesh Agricultural University (BAU), Mymensingh, Bangladesh. *Correspondence: murshed.fpm@bau.edu.bd (Dr. Murshed Alam, Professor, Department of Farm Power and Machinery, Bangladesh Agricultural University, Mymensingh, Bangladesh).  
  The number of transistors per chip, feature sizes, frequencies, transistor densities, number of cores, thermal design powers, die areas, and storage capacities of Integrated Circuits (ICs) used for different processing units and memories were collected from various websites from 1973 to 2019 and plotted against year of introduction of ICs in semi-log paper to find the trend with R-squared (R2) value using Microsoft Excel. The R2 values of the trend lines for the above parameters were over 0.922 which indicated that more than 92% of data satisfied the fitting lines except for thermal design power (R2 = 0.7) and die area (R2 = 0.4 to 0.6). It was observed that the growths of transistor counts, transistor densities, frequencies, and thermal design powers for different processing units were growing exponentially and doubled every 16.8 to 24 months from 1973 to 2019 except the growth of thermal design powers (TDP) and frequencies of ICs which were increased up to 2003. After that, the growth of TDP and frequencies are nearly linear up to the present day. The growth of the above parameters for ICs of different memories was a little faster, it was doubled every 14 to 16 months. The feature sizes shrunk 2 times every 18 months. A strong relation was found between feature sizes and transistor densities (R2 = 0.9) and observed that one fold of feature size decreased for the increasing of 2-3 folds of transistor densities. It was observed that different parameters for ICs designing from 1973 to 2019 kept pace with Moore's law. It may be concluded that the decrease of feature size, increasing of transistor count and transistor density in ICs design will follow Moore's law for some more years with the limitation of frequency and power of ICs.  
8 One Dimensional Heat Transfer through a Uniform Plane Wall by Using Finite Volume Method   ,   Saiful Islam1*, Md. Sirajul Islam2, and Sajib Mandal3   1Department of Computer Science and Engineering, Stamford University Bangladesh, Dhaka, Bangladesh; and 2&3Department of Mathematics, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalganj, Bangladesh.  *Correspondence: saiful.islam@stamforduniversity.edu.bd  
  In this paper, the finite volume method has been used to investigate one-dimensional conductive heat transfer throw a uniform plane wall. Then the step by step procedures of this numerical solution is described and implemented in a real-world problem where tri-diagonal matrix algorithm and Gaussian elimination matrix method are applied to solve the system of our discretized algebraic system of equations. Finally, to check the accuracy of our method, a comparison between the numerical solution obtained by finite volume techniques and the exact solution is presented which shows a minimum error compared to other existing methods.   
9 Effectiveness of Manual Bar Screen in Separating Solid Waste from Municipal Sewers of Khulna City   ,   Jobaer Ahmed Saju1*, Shah Nawaj Rahman Rubel2, Md. Masudur Rahman2, Subinoy Biswas Nayan2, and Ripon Bagchi3   1Lecturer, Dept. of Civil Engineering, European University of Bangladesh, Dhaka, Bangladesh; 2Postgraduate Student, Dept. of Civil Engineering, Khulna University of Engineering and Technology, Khulna, Bangladesh; and 3PhD Fellow, Institute of Disaster Management, Khulna University of Engineering and Technology, Khulna, Bangladesh. *Correspondence: saju1801504@stud.kuet.ac.bd  
  In Bangladesh, disposal of raw sewage directly into the streams is a common culture. Installing a complete wastewater treatment plant everywhere is not possible for developing or least developed countries. Bar screen can be advantageous in separating solid waste from the raw sewage. Solid waste separation from municipal sewage can play an important role in improving the environmental condition. The objective of this study was to observe the effect of bar screen in raw sewage pretreatment. This study was carried out in Khulna city area to investigate the condition of forty-seven outfalls through which the raw sewage is being disposed to the streams. As part of the study, a bar screen was temporarily installed on a drain inside Khulna University of Engineering & Technology campus. The capability and effect of the temporarily installed bar screen were observed and studied over a period of time. From twelve hours of observation of the installed bar screen, around 20% removal found for BOD and COD. Reduction of electrical conductivity (EC) and total dissolved solids (TDS) found near 20% also. Removal percentage of BOD, COD, EC, and TDS obtained higher after one hour of installing the bar screen while 24 hours of observation exhibited a comparatively lower rate of removal. The optimum condition of the bar screen notified at 12 hours which indicated the incorporation of cleaning procedure after every twelve hours to sustain the performance. Furthermore, the differences between raw sewage and bar screen treated sewage were studied; and the possibility of using bar screens on every outfall of Khulna city area was discussed in this study.   
10 Arsenic Removal from Aqueous Solutions Using Carbon Embedded Silica and Zeolite: Column Adsorption Studies   ,   Tariqul Islam1,2* and Changsheng Peng1,3   1The Key Lab of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China; 2Department of Agricultural Construction and Environmental Engineering, Sylhet Agricultural University, Sylhet-3100, Bangladesh; and 3School of Environment and Chemical Engineering, Zhaoqing University, Zhaoqing 526061, China. *Correspondence: tariqul.acee@sau.ac.bd  
  Column adsorption of the As (III) & As (V) using rice husk mediated carbon embedded silica (CES) and zeolite (Z-RHA) has been proved promising technique rather than the other conventional methods. The present work investigates the adsorption capability of newly manufactured CES and Z-RHA to remove As (III) & As (V) from aqueous solutions. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Scanning electron microscope (SEM), Energy dispersive X-ray (EDX), and Transmission electron microscopy (TEM) analysis have been investigated for the characterization of synthesized materials. The effects of different parameters like initial concentrations, column diameter, column height, particle size distribution have been investigated. The maximum removal efficiency of CES adsorbents for As (III) is 98% and for As (V) is 85%, and of Z-RHA for As (III) is 95% and for As (V) is 92%. To describe the adsorption behavior the Langmuir and Freundlich isotherm models as well as to kinetics models like Adam-Bohart, Thomas, and Yoon Nelson model were applied. Finally, to dispose of the rice husk mediated adsorbents after arsenic treatment solidification has been done.   
11 Development of Smart Librarian with the Virtual Assistant (PRIMO)   ,   Al Mahmud Al Mamun1*, Tahmina Islam2, Md. Masrur Sobhan Siam1, and Md. Enamul Kabir3   1Dept. of Computer Science and Engineering, Prime University, Bangladesh; 2Dept. of Electrical & Electronics Engineering, World University of Bangladesh, Dhaka, Bangladesh; and 3Dept. of Engineering, Confidence Power Rongpur Limited, Rongpur, Bangladesh. *Correspondence: almamun.1mail@gmail.com (Al Mahmud Al Mamun, Dept. of Computer Science and Engineering, Prime University, Dhaka, Bangladesh).  
  In modern life, with the ability to perform tasks, the virtual assistant (VA) can make our lives easier and smart. The virtual assistant can perform as a librarian, very smartly, and effectively. We build our VA with Raspberry Pi and Alexa Voice Service. As a result, few discussions that occur in library environments such as find books, short review books, university notice are accurately performed. The common way of communication used by people in day to day life is through speech. If the assistant system can heard to the customer for the handle of the day to day affairs, then grant the right reply, it will be much simple for customers to transmit with their assistant system, and the assistant will be much better “Smart” as a personal assistant. We heard a very old story “Ali Baba and the Forty Thieves”, where the mouth of a treasure cave secured by magic. It unrolls on the words "unroll sesame" and seals itself on the words "near sesame". The magic is a VA in the modern world. The VA system built on artificial intelligence (AI), machine learning, natural language processing, and voice recognition technology.   
12 Exploring the Effect of Rainfall Variability and Water Extent in Tanguar Haor, Sunamganj       ,   Ripon Bagchi1*, Md. Alim Miah2, Papri Hazra3, Robiul Hasan4, Himadree Shekhar Mondal5, and Sujan Kumar Paul6   1Dept. of Disaster Risk Management, Patuakhali Science and Technology University, Dumki, Patuakhali, Bangladesh; 2Dept.  of Environmental Science and Engineering, Jatiya Kabi Kazi Nazrul Islam University, Trishal, Mymensingh, Bangladesh; 3Dept.  of Environmental Science, Patuakhali Science and Technology University, Dumki, Patuakhali, Bangladesh; 4Centre for Disability in Development (CDD), Dhaka, Bangladesh; 5An Organization for Socio-Economic Development (AOSED), Khulna, Bangladesh; and 6Dept. of Chemistry, Govt. P.C. College, Bagerhat, Bangladesh.  *Correspondence: ribagchi@gmail.com  
  Tanguar haor is located in the north-eastern region of Bangladesh and frequently experienced extreme events such as high rainfall that affect the haor basin area with flash floods on a regular basis. Tanguar haor is usually foreseen to severe disastrous conditions for the reason of changes in rainfall patterns and water extent. The study was conducted at Tanguar haor of Sunamganj district. This study mainly focuses on the year to year rainfall variability (2001-2018) and water extent (2002-2018) in the Tanguar haor area. The specific objective of the study was to explore the effect of rainfall variability and water extent in Tanguar haor. Information and data were collected mainly from secondary sources. Analysis of data and assess the ecological effect of changes in rainfall patterns and water extent were the main activities of the study along with others. The findings of the study were changeability in rainfall patterns and water extent frequently caused a flash flood in pre-monsoon and monsoon season in the Tanguar haor area. Flash flood causes a vast amount of financial loss for the living people of the Tanguar haor that makes them more vulnerable to live well. The result of this study may help to gather new knowledge on the consequences of rainfall variability and water extent in the haor basin area. It may add significance to the management of flash flood and severe stress in the haor basin area.   
13 Study the BER Performance Comparison of MIMO Systems Using BPSK Modulation with ZF and MMSE Equalization   ,   G. M. Waliullah1, Diponkor Bala1, Ashrafunnahar Hena2, Md. Ibrahim Abdullah1, and Mohammad Alamgir Hossain1*   1Dept. of Computer Science and Engineering, Islamic University, Kushtia, Bangladesh; and 2Dept. of Electrical and Electronic Engineering, Islamic University, Kushtia, Bangladesh. *Correspondence: alamgir@cse.iu.ac.bd (Mohammad Alamgir Hossain, Assistant Professor, Dept. of Computer Science and Engineering, Islamic University, Kushtia, Bangladesh).  
  In the modern age, wireless communication is very helpful in various mobile antenna communication systems. In mobile communication systems, the transmission of data transfer rates is very high and it plays an important role in several services like video, top-quality audio, and mobile integrated service digital network. During the transmission of data at higher data transmission rates through the mobile radio channels, the channel impulse response can spread over many symbol periods as well as cause inter-symbol interference (ISI). Wireless transmission is suffering from fading and interference effects which may be combated with an equalizer. Due to fading and interference, it creates a problem for signal recovery in wireless communication. The main objective of this paper is to analyze the different types of equalizers such as ZF and MMSE for BPSK modulation. The simulation result has been developed by using MATLAB toolbox version 2015a and a multi-tap ISI channel is considered. By analyzing the simulation result it shows that if the number of tap lengths is increasing, BER will decrease in ZF equalizer. And finally shows BER vs SNR comparison of two different types of an equalizer and is able to find out MMSE performance is better than ZF equalizer.  
14 Prediction of Liver Diseases by Using Few Machine Learning Based Approaches   ,   Md. Shafiul Azam1, Aishe Rahman1, S. M. Hasan Sazzad Iqbal1, and Md. Toukir Ahmed1*   1Department of Computer Science and Engineering, Pabna University of Science and Technology (PUST), Pabna, Bangladesh. *Correspondence: toukirahmedreal@gmail.com (Md. Toukir Ahmed, Lecturer, Department of Computer Science and Engineering, PUST, Pabna, Bangladesh).  
  Advancement in medical science has always been one of the most vital aspects of the human race. With the progress in technology, the use of modern techniques and equipment is always imposed on treatment purposes. Nowadays, machine learning techniques have widely been used in medical science for assuring accuracy. In this work, we have constructed computational model building techniques for liver disease prediction accurately. We used some efficient classification algorithms: Random Forest, Perceptron, Decision Tree, K-Nearest Neighbors (KNN), and Support Vector Machine (SVM) for predicting liver diseases. Our works provide the implementation of hybrid model construction and comparative analysis for improving prediction performance. At first, classification algorithms are applied to the original liver patient datasets collected from the UCI repository. Then we analyzed features and tweaked to improve the performance of our predictor and made a comparative analysis among the classifiers. We examined that, KNN algorithm outperformed all other techniques with feature selection.  
15 Assessment and Evaluation of the Production Merchandising of a Denim Pant   ,   Faruq Hosen1*, Muhammad Mamun Hossain1, Sayed AKM Jahidul Hassan1, Mahadee Hassan1, Arafat Alam1, and Kamruzzaman Bisal1   1Department of Textile Engineering, Sonargaon University, Dhaka, Bangladesh.  *Correspondence: texfaruq@gmail.com (Faruq Hosen, Lecturer, Department of Textile Engineering, Sonargaon University, Dhaka, Bangladesh).  
  This study was designed to investigate the production merchandising of a denim pant. Denim pants are a significant prospect for the RMG sector in Bangladesh with a huge future. Without a doubt, pricing is the key important factor in the global competitive market. It is difficult to stay in the clothing market without spending the minimum on clothing. The research center on the whole factor which is directly involved to the FOB cost of basic denim pants where it includes textile cost, labor cost, and accessories cost, savings, charge making cost, washing and packing cost which are shown chronologically. With the aim that the total price spans can be contained as well as demonstrating the sum FOB cost. Merchandising means buying, producing, and selling any goods or products, or services for the local or international market. All activities related to the export purchase collection of any garment of a certain design for a certain quantity, production of the garment with precise attention to the garment level required for garment analysis, production of that quantity of garment required, and production timetable and exporting the samples within the fixed time frame, maybe called apparel merchandising. In production merchandising, a production merchandiser executed production-related all activities in the garments factory. In this study, basic 5 pocket denim pant (ladies) is used and the total order size was 23920pcs. The importer and Country name was Pizzaitalia-Italy.   
16 Monitoring of the Time and Action Calendar of a T-shirt Manufacturing   ,   Faruq Hosen1*, Rezaul Karim1, Rokibul Islam1, Jabir Hossain Babu1, Nahidul Islam1, Razib Hasan1, and SM Abdul Matin1   1Department of Textile Engineering, Sonargaon University, Dhaka, Bangladesh.  *Correspondence: texfaruq@gmail.com (Faruq Hosen, Lecturer, Department of Textile Engineering, Sonargaon University, Dhaka, Bangladesh).  
  This study was calculated to investigate the time and action (TNA) plan of a T-shirt manufacturing. A time and action calendar determine the final date/time in which the main activities of an order should be against a scheduled distribution window. To ensure timely supply within a specific delivery date of buyers in the knit garments industry, Time and Action Calendar or TNA, a popular tool that is used for tracking and following up in preproduction processes. The acquaintance about the TNA plan will also help to organize the production time-efficient manner that is better production on lead time from buyers. Creating a TNA The calendar doesn't just flow the name and duration of the activity; It’s also about technically The duration of the activity works, understandably determining the foregoing and subsequent activities. TNA is the table of activities of specific order and Process flow Sort by the table of tasks that require to be finished. The two key important dates are the cut-off date (PCD) and the ex-factory date as per the TNA plan. TNA largely turned on the order, the prerequisites of the machine, and the specific approach flow of available yield capacity. TNA plan is measured by the time frame which is related to buyers' lead time to export a particular order. The TNA obtained by taking it the requisition of 8101 pieces of a basic t-shirt, made out of 95% cotton and 5% elastane 160 GSM single jersey fabrics. The order is for SS 2019 and the buyer is GAP, delivery date October 8, 2019, and shipment at New York, USA.   
17 Comparative Studies of Electrical Resistance in Woven and Non-Woven Jute Fabrics at Different Input Voltage   ,   Sharmin Akter1, Tahnin Bintay Kamal2, Ashraful Alam2, Mahmuda Khatun3, Manika Rani Debnath4, and Md. Zobaidul Hossen5*   1Textile Physics Division, Bangladesh Jute Research Institute, Dhaka, Bangladesh; 2Mechanical Processing Division, Bangladesh Jute Research Institute, Dhaka, Bangladesh; 3Product Development Division, Bangladesh Jute Research Institute, Dhaka, Bangladesh; 4Agronomy Division, Bangladesh Jute Research Institute, Dhaka, Bangladesh, and 5Microbiology and Biochemistry Department, Bangladesh Jute Research Institute, Dhaka, Bangladesh.  *Corresponding author: zobaidulgeb@gmail.com (Department of Microbiology and Biochemistry, Bangladesh Jute Research Institute, Dhaka-1207, Bangladesh).  
  The use of jute fabrics is showing an increasing trend in textile, building and automobile sectors.  Electrical properties such as conductivity, resistance, di-electric constant, insulation, etc. are the essential factor for consideration for using jute fabrics in these sectors. For this reason, a study was carried out to find out the changes in electrical properties of woven and nonwoven jute fabrics at different input voltage. The electrical resistance of jute fabrics was measured by a digital impedance meter. Effects of input voltage, gauge length, and type of fabrics on electrical resistance were studied and analyzed. Experimental results indicated that the electrical resistance of woven and needle punched nonwoven jute fabrics decreased with the increase of input voltage and increased with the increase in gauge length. The highest value of electrical resistance in woven jute fabrics was 394 Mohm/cm at 2 cm gauge length and 60 V of the input voltage. In nonwoven jute fabrics, the maximum electrical resistance was 257 M ohm/cm which was obtained at 2 cm gauge length and 60 V of electrical resistance. Woven jute fabric showed a higher value of resistance than nonwoven jute fabric for different voltages. It was also observed that the electrical resistance varied with the type of fabrics used in this study.   
18 Design and Development of Low-Cost Solar Electricity Generation System with Heliostat to Ensure the Optimum Uses of Rated Capacity of Solar Cells   ,   Md. Rakibul Hasan1*, K M Rezaur Rahman2, and Md. Bodhroddoza Shohag1   1Center for Research Reactor, Atomic Energy Research Establishment, Ganakbari, Savar, Dhaka, Bangladesh; and 2International Affairs Division, Bangladesh Atomic Energy Commission, E-12/A, Agargaon, Sher-e-Bangla Nagar, Dhaka, Bangladesh.  *Correspondence: rakibmist@gmail.com (Md. Rakibul Hasan, Senior Engineer,  Center for Research Reactor, Atomic Energy Research Establishment, Ganakbari, Savar, Dhaka, Bangladesh).  
  Almost all solar electricity generation systems are now operated with flat plate solar panels. These flat plate solar panels have a lot of expensive collector area although still deliver only low-grade temperature which is a boundless problem for assuring the optimum uses of the rated capacity of solar panels. Using heliostats can reduce this problem significantly. Heliostats consist of a single or a set of mirrors that track the sun’s position and reflect the sun rays into a central receiving point. With the movement of the sun, these mirrors are adjusted accordingly to track the sun to ensure the highest amount of sunlight reflected onto the same collection point. The system is cheaper than any other solar tracking system presently used in our country. This paper describes an improved design of a solar electricity generation system having a capacity of 1Wp with heliostats on an experimental basis. It will also demonstrate a comparison of a generation of a 1Wp solar system with and without heliostats. Successful outcomes of this experiment will lead us to implement the heliostats-based tracking system into the large-scale solar electricity generation systems.  
19 Design and Development of Low-Cost Solar Electricity Generation System with Heliostat to Ensure the Optimum Uses of Rated Capacity of Solar Cells   ,   Md. Rakibul Hasan1*, K M Rezaur Rahman2, and Md. Bodhroddoza Shohag1   1Center for Research Reactor, Atomic Energy Research Establishment, Ganakbari, Savar, Dhaka, Bangladesh; and 2International Affairs Division, Bangladesh Atomic Energy Commission, E-12/A, Agargaon, Sher-e-Bangla Nagar, Dhaka, Bangladesh.  *Correspondence: rakibmist@gmail.com (Md. Rakibul Hasan, Senior Engineer,  Center for Research Reactor, Atomic Energy Research Establishment, Ganakbari, Savar, Dhaka, Bangladesh).  
  Almost all solar electricity generation systems are now operated with flat plate solar panels. These flat plate solar panels have a lot of expensive collector area although still deliver only low-grade temperature which is a boundless problem for assuring the optimum uses of the rated capacity of solar panels. Using heliostats can reduce this problem significantly. Heliostats consist of a single or a set of mirrors that track the sun’s position and reflect the sun rays into a central receiving point. With the movement of the sun, these mirrors are adjusted accordingly to track the sun to ensure the highest amount of sunlight reflected onto the same collection point. The system is cheaper than any other solar tracking system presently used in our country. This paper describes an improved design of a solar electricity generation system having a capacity of 1Wp with heliostats on an experimental basis. It will also demonstrate a comparison of a generation of a 1Wp solar system with and without heliostats. Successful outcomes of this experiment will lead us to implement the heliostats-based tracking system into the large-scale solar electricity generation systems.  
20 Big Data Analysis using BigQuery on Cloud Computing Platform   , Md. Husen Ali1*, Md. Sarwar Hosain1, and Md. Anwar Hossain1 1Department of Information and Communication Engineering, Pabna University of Science and Technology (PUST), Pabna, Bangladesh. *Correspondence: husenali.ice@gmail.com (Md. Husen Ali, Research Student, Department of Information and Communication Engineering, PUST, Pabna, Bangladesh).  
End the age of digitalization, data generated from numerous online and offline sources in every second. The Data are having a considerable amount of size and several properties termed as Bigdata. It is challenging to store, manage process, analyze, visualize, and extract useful information from Bigdata using traditional approaches in local machines. To resolve this cloud computing platform is the solution. Cloud computing has high-level processing units, storage, and applications that do not depend on user devices' performance. Many users can access resources and demanded services remotely from the cloud on a pay-as-use basis. That is why users are not needed to buy and install costly resources locally. Some cloud services providers are Google, AWS, IBM, and Microsoft, and they have their Bigdata analyzing robust systems and products in a cost-efficient manner. There are many Cloud Service Providers (CSP's) having different services of Bigdata analyzing filed. However, we discuss in the paper about an excellent service BigQuery in the Data ware house product of Google to analyze and represent numerous samples of datasets in real-time for making the right decisions within a short time.  
21 Dust Ion Acoustic Solitary Waves in Multi-Ion Dusty Plasma System   ,   Kazi Asraful Islam1*, F. Deeba2, and Md. Kamal-Al-Hassan3   1Dept. of Textile Engineering, Sonargaon University, Dhaka-1212, Bangladesh; and 2Dept. of Physics, Dhaka University of Engineering & Technology, Gazipur-1707, Bangladesh *Correspondence: kazinooman@gmail.com  
  A theoretical work has done to observe the existence of dust ion-acoustic (DIA) solitary waves (SWs) in a multi-ion dusty plasma system consisting of inertial positive and negative ions, Maxwell’s electrons, and arbitrary charged stationary dust. In this short communication, our research declares that with these components the derivation of Korteweg-de Vries (K-dV) and mixed K-dV (mK-dV) is possible. Here reductive perturbation method has been employed in all these approaches. The first K-dV equation has been derived which gave both bright and dark solitons but for a very limited region. Then the mK-dV equation has been derived that gave bright soliton for a large region, but no dark soliton has been observed.  
22 Hybridization of Vigenere Technique with the Collaboration of RSA for Secure Communication   ,   Md. Tarequl Islam1* and Md. Selim Hossain1   1Department of Computer Science and Engineering, Khwaja Yunus Ali University, Sirajgonj, Bangladesh *Correspondence: tareq.cse@gmail.com  
  The security factor is one of the major concerns in today’s world. As security is the breath of communication, as much as we can make our communication system secure, the system will be more trustworthy and be more restricted to snap as well as can save guard from the unauthorized attempt. Either symmetric or asymmetric encryption was used in the earlier method to ensure data security. However, any of them alone makes the system either unsecured or time-consuming. In our thesis work, we have used both the techniques together to make the system as much as reliable and also to make it faster using the hybridization of asymmetric RSA encryption and symmetric modified vigenere technique. This hybridization method sends the vigenere table as an encrypted string using an asymmetric process with the collaboration of the RSA encryption algorithm where the string will be encrypted by the public key generated by the receiver. Later the string will be decrypted using the receiver’s private key. Therefore, we can claim that the extended vigenere method with the collaboration of RSA makes the overall communication more secure, stable, reliable, and faster.  
23 Assessment on Climate Change Adaptation: A Study on Coastal Area of Khulna District in Bangladesh   ,   Md. Anwarul Islam1*, Md. Shamsuzzoha2, Md. Rasheduzzaman2, Rajan Chandra Ghosh2, and Md. Faisal3   1Faculty of Disaster Management, Patuakhali Science and Technology University, Dumki, Patuakhali-8602, Bangladesh; 2Department of Emergency Management, Patuakhali Science and Technology University, Dumki, Patuakhali-8602, Bangladesh; 3Department of Disaster Resilience and Engineering, Patuakhali Science and Technology University, Dumki, Patuakhali-8602, Bangladesh.  *Correspondence: islam1973505@stud.kuet.ac.bd  
  Bangladesh is likely to be one of the most vulnerable countries in the world to climate change due to geographical location and geo-morphological conditions. Bangladesh experiences extremely disastrous situations like a cyclone, flood, saline water intrusion, waterlogging, heavy rainfall, river erosion, storm surge, etc. that occur frequently in the coastal part of Bangladesh. This results in a huge loss of lives, damages properties, and degrades the integrity of the environmental components. This study was conducted on 2 villages (Chotta Chalna and Shivnagar) of Dacope Upazila of Khulna district with the purpose of assessing existing climate change adaptation scenarios and techniques for mitigating climate change-related risks. Necessary data were collected from various sources namely direct household survey, focus group discussion, and key informants interview and from various journals, related thesis papers. About 46% of the respondents cited cyclone is the most terrific type hazard and 17.33% of respondents cited salinity intrusion is the second devastating type hazard that they faced. The results show that the study area climate change risks are very high and existing climate change adaptation techniques are not effective enough to mitigate the risks. Sustainable climate change adaptation strategies are much needed to mitigate the climate change risks of the study area.   
24 Comparison of the Quality Parameter between Cotton and Melange process   ,   Rezaul Karim1*, Abdur Razzak1, A.K.M. Mahabubuzzaman2, and A Shahid3   1Dept. of Textile Engineering, Sonargaon University, Dhaka, Bangladesh; 2Bangladesh Jute Research Institute, Dhaka, Bangladesh; 3Dept. of Textile Engineering, Dhaka University of Engineering & Technology, Gazipur, Bangladesh  *Correspondence: rezatex99@gmail.com  
  The comparison of the quality parameter between Cotton and melange processes for different count and melange ratios have been studied. Here the yarns are produced from Indian cotton, Australia cotton, US cotton, China Black Viscose, and Indian Black Viscose (Melange). During the project work, different properties for the different machines in the same setting and ratios have been observed. All observations have completed by the latest model LMW (LR 9/AX) Auto Doffer Ring Machine. The quality parameters, for instance, mass irregularity (U%, CVm%,) Imperfection index (IPI), Count Strength Product (CSP), and hairiness were tested and then analyzed. For melange yarn, for different ratios, the best results have been given by 100% cotton yarn, because there is no blending between two different fibers. The quality parameter and characteristics have been presented for different types of fiber (100 % cotton, Black Viscose) and produced yarn (100 % Cotton, 5% Melange, 10% Melange, and 15 % Melange ratio) from the fiber. The productivity of melange yarn base on different condition is increased than 100% cotton yarn.  
25 Influence of Potential Differential Voltage on Electric Resistance of Needle Punched Non-Woven Jute Fabrics   ,   Sharmin Akter1, Tahnin Bintay Kamal2, Mahmuda Khatun3, Md. Mahbubul Alam3, Md. Zobaidul Hossen4, and Rezaul Karim5*   1Textile Physics Division, Bangladesh Jute Research Institute, Dhaka, Bangladesh; 2Mechanical Processing Division, Bangladesh Jute Research Institute, Dhaka, Bangladesh; 3Product Development Division, Bangladesh Jute Research Institute, Dhaka, Bangladesh; 4Microbiology Department, Bangladesh Jute Research Institute, Dhaka, Bangladesh; and 5Dept. of Textile Engineering, Sonargaon University, Dhaka, Bangladesh.  *Correspondence: rezatex99@gmail.com  
  In this research, the electrical resistance of needle-punched non-woven jute fabric at different input voltage was measured. Here, to determine the electrical resistance, a device named the digital impedance meter has been used. The specific resistance for the different gauge lengths of non-woven jute fabric has been observed to enhance the use of jute fabric for electrical purposes. It has been observed that the electrical resistance increased with the higher value of gauge length and decreased with the increase of input voltage.  
26 Impact of Weather on Crops in Few Northern Parts of Bangladesh: HCI and Machine Learning Based Approach   ,   Md. Toukir Ahmed1*, Md. Niaz Imtiaz1, and Nurun Sakiba Mitu1   1Department of Computer Science and Engineering, Pabna University of Science and Technology, Pabna, Bangladesh *Correspondence: toukirahmedreal@gmail.com  
  As Bangladesh is an agricultural country, the economy, as well as the food security of this country, mostly depends on the production level of different crops over the year. Therefore, there exists immense pressure on exaggerated crop production due to the fast growth of the population. But, the average production level is being hampered by the bad nature of the weather. We have conducted a survey on near about 100 farmers of two northern districts of Bangladesh: Pabna and Rajshahi and assessed the impact of rough nature on production. According to farmers and agriculturalists, it is noticed that rough weather causes about 30% to 70% production shortage than expectation with all other factors remaining constant. In this study, we have adopted Human-computer interaction (HCI) based approach (Soft System Methodology-SSM) to this aspect for efficacious collaboration with root-level farmers and agricultural trainers providing ease for understanding weather-related issues on the production of crops. Finally, some machine learning algorithms were also implemented on the obtained dataset to accurately classify the range of production level of rice and a comparison is made among the algorithms based on performance metrics. Moreover, an android based application is created to depict the summary of the study.   
27 The Trend of Different Parameters for Designing Integrated Circuits from 1973 to 2019 and Linked to Moore's Law   ,   Nashmin Alam1 and Murshed Alam2*   1Department of Electrical and Electronic Engineering, Bangladesh University of Business and Technology, Dhaka, Bangladesh; and 2Department of Farm Power and Machinery, Bangladesh Agricultural University (BAU), Mymensingh, Bangladesh. *Correspondence: murshed.fpm@bau.edu.bd (Dr. Murshed Alam, Professor, Department of Farm Power and Machinery, Bangladesh Agricultural University, Mymensingh, Bangladesh).  
  The number of transistors per chip, feature sizes, frequencies, transistor densities, number of cores, thermal design powers, die areas, and storage capacities of Integrated Circuits (ICs) used for different processing units and memories were collected from various websites from 1973 to 2019 and plotted against year of introduction of ICs in semi-log paper to find the trend with R-squared (R2) value using Microsoft Excel. The R2 values of the trend lines for the above parameters were over 0.922 which indicated that more than 92% of data satisfied the fitting lines except for thermal design power (R2 = 0.7) and die area (R2 = 0.4 to 0.6). It was observed that the growths of transistor counts, transistor densities, frequencies, and thermal design powers for different processing units were growing exponentially and doubled every 16.8 to 24 months from 1973 to 2019 except the growth of thermal design powers (TDP) and frequencies of ICs which were increased up to 2003. After that, the growth of TDP and frequencies are nearly linear up to the present day. The growth of the above parameters for ICs of different memories was a little faster, it was doubled every 14 to 16 months. The feature sizes shrunk 2 times every 18 months. A strong relation was found between feature sizes and transistor densities (R2 = 0.9) and observed that one fold of feature size decreased for the increasing of 2-3 folds of transistor densities. It was observed that different parameters for ICs designing from 1973 to 2019 kept pace with Moore's law. It may be concluded that the decrease of feature size, increasing of transistor count and transistor density in ICs design will follow Moore's law for some more years with the limitation of frequency and power of ICs.  
28 One Dimensional Heat Transfer through a Uniform Plane Wall by Using Finite Volume Method   ,   Saiful Islam1*, Md. Sirajul Islam2, and Sajib Mandal3   1Department of Computer Science and Engineering, Stamford University Bangladesh, Dhaka, Bangladesh; and 2&3Department of Mathematics, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalganj, Bangladesh.  *Correspondence: saiful.islam@stamforduniversity.edu.bd  
  In this paper, the finite volume method has been used to investigate one-dimensional conductive heat transfer throw a uniform plane wall. Then the step by step procedures of this numerical solution is described and implemented in a real-world problem where tri-diagonal matrix algorithm and Gaussian elimination matrix method are applied to solve the system of our discretized algebraic system of equations. Finally, to check the accuracy of our method, a comparison between the numerical solution obtained by finite volume techniques and the exact solution is presented which shows a minimum error compared to other existing methods.   
29 Effectiveness of Manual Bar Screen in Separating Solid Waste from Municipal Sewers of Khulna City   ,   Jobaer Ahmed Saju1*, Shah Nawaj Rahman Rubel2, Md. Masudur Rahman2, Subinoy Biswas Nayan2, and Ripon Bagchi3   1Lecturer, Dept. of Civil Engineering, European University of Bangladesh, Dhaka, Bangladesh; 2Postgraduate Student, Dept. of Civil Engineering, Khulna University of Engineering and Technology, Khulna, Bangladesh; and 3PhD Fellow, Institute of Disaster Management, Khulna University of Engineering and Technology, Khulna, Bangladesh. *Correspondence: saju1801504@stud.kuet.ac.bd  
  In Bangladesh, disposal of raw sewage directly into the streams is a common culture. Installing a complete wastewater treatment plant everywhere is not possible for developing or least developed countries. Bar screen can be advantageous in separating solid waste from the raw sewage. Solid waste separation from municipal sewage can play an important role in improving the environmental condition. The objective of this study was to observe the effect of bar screen in raw sewage pretreatment. This study was carried out in Khulna city area to investigate the condition of forty-seven outfalls through which the raw sewage is being disposed to the streams. As part of the study, a bar screen was temporarily installed on a drain inside Khulna University of Engineering & Technology campus. The capability and effect of the temporarily installed bar screen were observed and studied over a period of time. From twelve hours of observation of the installed bar screen, around 20% removal found for BOD and COD. Reduction of electrical conductivity (EC) and total dissolved solids (TDS) found near 20% also. Removal percentage of BOD, COD, EC, and TDS obtained higher after one hour of installing the bar screen while 24 hours of observation exhibited a comparatively lower rate of removal. The optimum condition of the bar screen notified at 12 hours which indicated the incorporation of cleaning procedure after every twelve hours to sustain the performance. Furthermore, the differences between raw sewage and bar screen treated sewage were studied; and the possibility of using bar screens on every outfall of Khulna city area was discussed in this study.   
30 Arsenic Removal from Aqueous Solutions Using Carbon Embedded Silica and Zeolite: Column Adsorption Studies   ,   Tariqul Islam1,2* and Changsheng Peng1,3   1The Key Lab of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China; 2Department of Agricultural Construction and Environmental Engineering, Sylhet Agricultural University, Sylhet-3100, Bangladesh; and 3School of Environment and Chemical Engineering, Zhaoqing University, Zhaoqing 526061, China. *Correspondence: tariqul.acee@sau.ac.bd  
  Column adsorption of the As (III) & As (V) using rice husk mediated carbon embedded silica (CES) and zeolite (Z-RHA) has been proved promising technique rather than the other conventional methods. The present work investigates the adsorption capability of newly manufactured CES and Z-RHA to remove As (III) & As (V) from aqueous solutions. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Scanning electron microscope (SEM), Energy dispersive X-ray (EDX), and Transmission electron microscopy (TEM) analysis have been investigated for the characterization of synthesized materials. The effects of different parameters like initial concentrations, column diameter, column height, particle size distribution have been investigated. The maximum removal efficiency of CES adsorbents for As (III) is 98% and for As (V) is 85%, and of Z-RHA for As (III) is 95% and for As (V) is 92%. To describe the adsorption behavior the Langmuir and Freundlich isotherm models as well as to kinetics models like Adam-Bohart, Thomas, and Yoon Nelson model were applied. Finally, to dispose of the rice husk mediated adsorbents after arsenic treatment solidification has been done.   
31 Development of Smart Librarian with the Virtual Assistant (PRIMO)   ,   Al Mahmud Al Mamun1*, Tahmina Islam2, Md. Masrur Sobhan Siam1, and Md. Enamul Kabir3   1Dept. of Computer Science and Engineering, Prime University, Bangladesh; 2Dept. of Electrical & Electronics Engineering, World University of Bangladesh, Dhaka, Bangladesh; and 3Dept. of Engineering, Confidence Power Rongpur Limited, Rongpur, Bangladesh. *Correspondence: almamun.1mail@gmail.com (Al Mahmud Al Mamun, Dept. of Computer Science and Engineering, Prime University, Dhaka, Bangladesh).  
  In modern life, with the ability to perform tasks, the virtual assistant (VA) can make our lives easier and smart. The virtual assistant can perform as a librarian, very smartly, and effectively. We build our VA with Raspberry Pi and Alexa Voice Service. As a result, few discussions that occur in library environments such as find books, short review books, university notice are accurately performed. The common way of communication used by people in day to day life is through speech. If the assistant system can heard to the customer for the handle of the day to day affairs, then grant the right reply, it will be much simple for customers to transmit with their assistant system, and the assistant will be much better “Smart” as a personal assistant. We heard a very old story “Ali Baba and the Forty Thieves”, where the mouth of a treasure cave secured by magic. It unrolls on the words "unroll sesame" and seals itself on the words "near sesame". The magic is a VA in the modern world. The VA system built on artificial intelligence (AI), machine learning, natural language processing, and voice recognition technology.   
32 Exploring the Effect of Rainfall Variability and Water Extent in Tanguar Haor, Sunamganj       ,   Ripon Bagchi1*, Md. Alim Miah2, Papri Hazra3, Robiul Hasan4, Himadree Shekhar Mondal5, and Sujan Kumar Paul6   1Dept. of Disaster Risk Management, Patuakhali Science and Technology University, Dumki, Patuakhali, Bangladesh; 2Dept.  of Environmental Science and Engineering, Jatiya Kabi Kazi Nazrul Islam University, Trishal, Mymensingh, Bangladesh; 3Dept.  of Environmental Science, Patuakhali Science and Technology University, Dumki, Patuakhali, Bangladesh; 4Centre for Disability in Development (CDD), Dhaka, Bangladesh; 5An Organization for Socio-Economic Development (AOSED), Khulna, Bangladesh; and 6Dept. of Chemistry, Govt. P.C. College, Bagerhat, Bangladesh.  *Correspondence: ribagchi@gmail.com  
  Tanguar haor is located in the north-eastern region of Bangladesh and frequently experienced extreme events such as high rainfall that affect the haor basin area with flash floods on a regular basis. Tanguar haor is usually foreseen to severe disastrous conditions for the reason of changes in rainfall patterns and water extent. The study was conducted at Tanguar haor of Sunamganj district. This study mainly focuses on the year to year rainfall variability (2001-2018) and water extent (2002-2018) in the Tanguar haor area. The specific objective of the study was to explore the effect of rainfall variability and water extent in Tanguar haor. Information and data were collected mainly from secondary sources. Analysis of data and assess the ecological effect of changes in rainfall patterns and water extent were the main activities of the study along with others. The findings of the study were changeability in rainfall patterns and water extent frequently caused a flash flood in pre-monsoon and monsoon season in the Tanguar haor area. Flash flood causes a vast amount of financial loss for the living people of the Tanguar haor that makes them more vulnerable to live well. The result of this study may help to gather new knowledge on the consequences of rainfall variability and water extent in the haor basin area. It may add significance to the management of flash flood and severe stress in the haor basin area.   
33 Study the BER Performance Comparison of MIMO Systems Using BPSK Modulation with ZF and MMSE Equalization   ,   G. M. Waliullah1, Diponkor Bala1, Ashrafunnahar Hena2, Md. Ibrahim Abdullah1, and Mohammad Alamgir Hossain1*   1Dept. of Computer Science and Engineering, Islamic University, Kushtia, Bangladesh; and 2Dept. of Electrical and Electronic Engineering, Islamic University, Kushtia, Bangladesh. *Correspondence: alamgir@cse.iu.ac.bd (Mohammad Alamgir Hossain, Assistant Professor, Dept. of Computer Science and Engineering, Islamic University, Kushtia, Bangladesh).  
  In the modern age, wireless communication is very helpful in various mobile antenna communication systems. In mobile communication systems, the transmission of data transfer rates is very high and it plays an important role in several services like video, top-quality audio, and mobile integrated service digital network. During the transmission of data at higher data transmission rates through the mobile radio channels, the channel impulse response can spread over many symbol periods as well as cause inter-symbol interference (ISI). Wireless transmission is suffering from fading and interference effects which may be combated with an equalizer. Due to fading and interference, it creates a problem for signal recovery in wireless communication. The main objective of this paper is to analyze the different types of equalizers such as ZF and MMSE for BPSK modulation. The simulation result has been developed by using MATLAB toolbox version 2015a and a multi-tap ISI channel is considered. By analyzing the simulation result it shows that if the number of tap lengths is increasing, BER will decrease in ZF equalizer. And finally shows BER vs SNR comparison of two different types of an equalizer and is able to find out MMSE performance is better than ZF equalizer.  
34 Prediction of Liver Diseases by Using Few Machine Learning Based Approaches   ,   Md. Shafiul Azam1, Aishe Rahman1, S. M. Hasan Sazzad Iqbal1, and Md. Toukir Ahmed1*   1Department of Computer Science and Engineering, Pabna University of Science and Technology (PUST), Pabna, Bangladesh. *Correspondence: toukirahmedreal@gmail.com (Md. Toukir Ahmed, Lecturer, Department of Computer Science and Engineering, PUST, Pabna, Bangladesh).  
  Advancement in medical science has always been one of the most vital aspects of the human race. With the progress in technology, the use of modern techniques and equipment is always imposed on treatment purposes. Nowadays, machine learning techniques have widely been used in medical science for assuring accuracy. In this work, we have constructed computational model building techniques for liver disease prediction accurately. We used some efficient classification algorithms: Random Forest, Perceptron, Decision Tree, K-Nearest Neighbors (KNN), and Support Vector Machine (SVM) for predicting liver diseases. Our works provide the implementation of hybrid model construction and comparative analysis for improving prediction performance. At first, classification algorithms are applied to the original liver patient datasets collected from the UCI repository. Then we analyzed features and tweaked to improve the performance of our predictor and made a comparative analysis among the classifiers. We examined that, KNN algorithm outperformed all other techniques with feature selection.  
35 Assessment and Evaluation of the Production Merchandising of a Denim Pant   ,   Faruq Hosen1*, Muhammad Mamun Hossain1, Sayed AKM Jahidul Hassan1, Mahadee Hassan1, Arafat Alam1, and Kamruzzaman Bisal1   1Department of Textile Engineering, Sonargaon University, Dhaka, Bangladesh.  *Correspondence: texfaruq@gmail.com (Faruq Hosen, Lecturer, Department of Textile Engineering, Sonargaon University, Dhaka, Bangladesh).  
  This study was designed to investigate the production merchandising of a denim pant. Denim pants are a significant prospect for the RMG sector in Bangladesh with a huge future. Without a doubt, pricing is the key important factor in the global competitive market. It is difficult to stay in the clothing market without spending the minimum on clothing. The research center on the whole factor which is directly involved to the FOB cost of basic denim pants where it includes textile cost, labor cost, and accessories cost, savings, charge making cost, washing and packing cost which are shown chronologically. With the aim that the total price spans can be contained as well as demonstrating the sum FOB cost. Merchandising means buying, producing, and selling any goods or products, or services for the local or international market. All activities related to the export purchase collection of any garment of a certain design for a certain quantity, production of the garment with precise attention to the garment level required for garment analysis, production of that quantity of garment required, and production timetable and exporting the samples within the fixed time frame, maybe called apparel merchandising. In production merchandising, a production merchandiser executed production-related all activities in the garments factory. In this study, basic 5 pocket denim pant (ladies) is used and the total order size was 23920pcs. The importer and Country name was Pizzaitalia-Italy.   
36 Monitoring of the Time and Action Calendar of a T-shirt Manufacturing   ,   Faruq Hosen1*, Rezaul Karim1, Rokibul Islam1, Jabir Hossain Babu1, Nahidul Islam1, Razib Hasan1, and SM Abdul Matin1   1Department of Textile Engineering, Sonargaon University, Dhaka, Bangladesh.  *Correspondence: texfaruq@gmail.com (Faruq Hosen, Lecturer, Department of Textile Engineering, Sonargaon University, Dhaka, Bangladesh).  
  This study was calculated to investigate the time and action (TNA) plan of a T-shirt manufacturing. A time and action calendar determine the final date/time in which the main activities of an order should be against a scheduled distribution window. To ensure timely supply within a specific delivery date of buyers in the knit garments industry, Time and Action Calendar or TNA, a popular tool that is used for tracking and following up in preproduction processes. The acquaintance about the TNA plan will also help to organize the production time-efficient manner that is better production on lead time from buyers. Creating a TNA The calendar doesn't just flow the name and duration of the activity; It’s also about technically The duration of the activity works, understandably determining the foregoing and subsequent activities. TNA is the table of activities of specific order and Process flow Sort by the table of tasks that require to be finished. The two key important dates are the cut-off date (PCD) and the ex-factory date as per the TNA plan. TNA largely turned on the order, the prerequisites of the machine, and the specific approach flow of available yield capacity. TNA plan is measured by the time frame which is related to buyers' lead time to export a particular order. The TNA obtained by taking it the requisition of 8101 pieces of a basic t-shirt, made out of 95% cotton and 5% elastane 160 GSM single jersey fabrics. The order is for SS 2019 and the buyer is GAP, delivery date October 8, 2019, and shipment at New York, USA.   
37 Comparative Studies of Electrical Resistance in Woven and Non-Woven Jute Fabrics at Different Input Voltage   ,   Sharmin Akter1, Tahnin Bintay Kamal2, Ashraful Alam2, Mahmuda Khatun3, Manika Rani Debnath4, and Md. Zobaidul Hossen5*   1Textile Physics Division, Bangladesh Jute Research Institute, Dhaka, Bangladesh; 2Mechanical Processing Division, Bangladesh Jute Research Institute, Dhaka, Bangladesh; 3Product Development Division, Bangladesh Jute Research Institute, Dhaka, Bangladesh; 4Agronomy Division, Bangladesh Jute Research Institute, Dhaka, Bangladesh, and 5Microbiology and Biochemistry Department, Bangladesh Jute Research Institute, Dhaka, Bangladesh.  *Corresponding author: zobaidulgeb@gmail.com (Department of Microbiology and Biochemistry, Bangladesh Jute Research Institute, Dhaka-1207, Bangladesh).  
  The use of jute fabrics is showing an increasing trend in textile, building and automobile sectors.  Electrical properties such as conductivity, resistance, di-electric constant, insulation, etc. are the essential factor for consideration for using jute fabrics in these sectors. For this reason, a study was carried out to find out the changes in electrical properties of woven and nonwoven jute fabrics at different input voltage. The electrical resistance of jute fabrics was measured by a digital impedance meter. Effects of input voltage, gauge length, and type of fabrics on electrical resistance were studied and analyzed. Experimental results indicated that the electrical resistance of woven and needle punched nonwoven jute fabrics decreased with the increase of input voltage and increased with the increase in gauge length. The highest value of electrical resistance in woven jute fabrics was 394 Mohm/cm at 2 cm gauge length and 60 V of the input voltage. In nonwoven jute fabrics, the maximum electrical resistance was 257 M ohm/cm which was obtained at 2 cm gauge length and 60 V of electrical resistance. Woven jute fabric showed a higher value of resistance than nonwoven jute fabric for different voltages. It was also observed that the electrical resistance varied with the type of fabrics used in this study.   
38 Design and Development of Low-Cost Solar Electricity Generation System with Heliostat to Ensure the Optimum Uses of Rated Capacity of Solar Cells   ,   Md. Rakibul Hasan1*, K M Rezaur Rahman2, and Md. Bodhroddoza Shohag1   1Center for Research Reactor, Atomic Energy Research Establishment, Ganakbari, Savar, Dhaka, Bangladesh; and 2International Affairs Division, Bangladesh Atomic Energy Commission, E-12/A, Agargaon, Sher-e-Bangla Nagar, Dhaka, Bangladesh.  *Correspondence: rakibmist@gmail.com (Md. Rakibul Hasan, Senior Engineer,  Center for Research Reactor, Atomic Energy Research Establishment, Ganakbari, Savar, Dhaka, Bangladesh).  
  Almost all solar electricity generation systems are now operated with flat plate solar panels. These flat plate solar panels have a lot of expensive collector area although still deliver only low-grade temperature which is a boundless problem for assuring the optimum uses of the rated capacity of solar panels. Using heliostats can reduce this problem significantly. Heliostats consist of a single or a set of mirrors that track the sun’s position and reflect the sun rays into a central receiving point. With the movement of the sun, these mirrors are adjusted accordingly to track the sun to ensure the highest amount of sunlight reflected onto the same collection point. The system is cheaper than any other solar tracking system presently used in our country. This paper describes an improved design of a solar electricity generation system having a capacity of 1Wp with heliostats on an experimental basis. It will also demonstrate a comparison of a generation of a 1Wp solar system with and without heliostats. Successful outcomes of this experiment will lead us to implement the heliostats-based tracking system into the large-scale solar electricity generation systems.  
39 Design and Development of Low-Cost Solar Electricity Generation System with Heliostat to Ensure the Optimum Uses of Rated Capacity of Solar Cells   ,   Md. Rakibul Hasan1*, K M Rezaur Rahman2, and Md. Bodhroddoza Shohag1   1Center for Research Reactor, Atomic Energy Research Establishment, Ganakbari, Savar, Dhaka, Bangladesh; and 2International Affairs Division, Bangladesh Atomic Energy Commission, E-12/A, Agargaon, Sher-e-Bangla Nagar, Dhaka, Bangladesh.  *Correspondence: rakibmist@gmail.com (Md. Rakibul Hasan, Senior Engineer,  Center for Research Reactor, Atomic Energy Research Establishment, Ganakbari, Savar, Dhaka, Bangladesh).  
  Almost all solar electricity generation systems are now operated with flat plate solar panels. These flat plate solar panels have a lot of expensive collector area although still deliver only low-grade temperature which is a boundless problem for assuring the optimum uses of the rated capacity of solar panels. Using heliostats can reduce this problem significantly. Heliostats consist of a single or a set of mirrors that track the sun’s position and reflect the sun rays into a central receiving point. With the movement of the sun, these mirrors are adjusted accordingly to track the sun to ensure the highest amount of sunlight reflected onto the same collection point. The system is cheaper than any other solar tracking system presently used in our country. This paper describes an improved design of a solar electricity generation system having a capacity of 1Wp with heliostats on an experimental basis. It will also demonstrate a comparison of a generation of a 1Wp solar system with and without heliostats. Successful outcomes of this experiment will lead us to implement the heliostats-based tracking system into the large-scale solar electricity generation systems.  
40 Big Data Analysis using BigQuery on Cloud Computing Platform   , Md. Husen Ali1*, Md. Sarwar Hosain1, and Md. Anwar Hossain1 1Department of Information and Communication Engineering, Pabna University of Science and Technology (PUST), Pabna, Bangladesh. *Correspondence: husenali.ice@gmail.com (Md. Husen Ali, Research Student, Department of Information and Communication Engineering, PUST, Pabna, Bangladesh).  
End the age of digitalization, data generated from numerous online and offline sources in every second. The Data are having a considerable amount of size and several properties termed as Bigdata. It is challenging to store, manage process, analyze, visualize, and extract useful information from Bigdata using traditional approaches in local machines. To resolve this cloud computing platform is the solution. Cloud computing has high-level processing units, storage, and applications that do not depend on user devices' performance. Many users can access resources and demanded services remotely from the cloud on a pay-as-use basis. That is why users are not needed to buy and install costly resources locally. Some cloud services providers are Google, AWS, IBM, and Microsoft, and they have their Bigdata analyzing robust systems and products in a cost-efficient manner. There are many Cloud Service Providers (CSP's) having different services of Bigdata analyzing filed. However, we discuss in the paper about an excellent service BigQuery in the Data ware house product of Google to analyze and represent numerous samples of datasets in real-time for making the right decisions within a short time.  
41 Development and Design of a Humanoid Robot System MIRAA: Intelligent & Autonomous Mobile Assistant   , Mahmuda Akter1*, Mahtabur Rahman1, Md. Rifat1, Maruf Hasan1, Sarmin Nahar1, and Safik Hasan1 ¹Department of Computer Science and Engineering, Gono Bishwabidyalay, Savar, Dhaka-1344, Bangladesh. *Correspondence: mahmudaakhi.gb@gmail.com
This study represents work in progress towards a complete system of a humanoid robot. With this aim, the system must be capable to interact with a human, Give response to the question, do gestures, assist with finding an information, remember different types of thing, find internet data regarding to the user’s query, find errors in its system and save a log file in order to further development and debug, autonomous servo control with the help of PID (proportional-integral-derivative) controlling. Open CV, Servo Control (Head) the system integrates with facial and object recognition to achieve its objectives based on PID quality, among other advanced capabilities derived from Open CV (camera). Details of the implementation of the currently developed system will be displayed. Towards the end, after success in the preliminary results obtained on our campus, we are encouraged to do so in order to obtain a complete prototype. 
42 Quantization and Assessment of the Gravitational Waves   , Md. Ashik Iqbal1* and Mohiuddin Ahmed2* 1&2Faculty Member in Mathematics, Department of Computer Science and Engineering, North Western University (NWU), Khulna, Bangladesh.  *Correspondence: ashikiqbalmath@gmail.com (Md. Ashik Iqbal), and mohiuddina6@gmail.com (Mohiuddin Ahmed), Faculty Member in Mathematics, Department of Computer Science and Engineering, NWU, Khulna, Bangladesh). 
General Relativity describes the movement of bodies in strong gravitational fields with the geometrical structure of the dynamical space-time continuum. Accelerating objects produce changes in the curvature which propagate outwards at the speed of light in a wave-like manner which transports energy as gravitational radiation and this phenomenon are known as gravitational waves. 
43 Toxic and Non-Toxic Gas Detection System for Septic Tank   , Aklima Begum1, Md. Abdullah Al Mamun1*, Md. Atiar Rahman1, Sabiha Sattar1, Mist Toma Khatun1, Hasina Akhter1, and Mohaimina Begum1  1Electronics Division, Atomic Energy Centre, Dhaka-1000, Bangladesh.  *Correspondence: mamun.aec@gmail.com (Dr. Md. Abdullah Al Mamun, Principal Scientific Officer, Electronics Division, Atomic Energy Centre, Dhaka-1000, Bangladesh).
In septic tanks, various types of toxic and non-toxic gases are found such as Carbon-di-Oxide (CO2), Carbon-mono-Oxide (CO), Hydrogen Sulfide (H2S), Methane (CH4), and so on. In this paper, a toxic gas detection system for a septic tank has been presented, where MQ-135, MQ-136, MQ-4, and MQ-7 sensors are employed for combined detection of CO2, H2S, CH4, and CO gases respectively. With the change of concentration of gases, the sensor resistance changes, and accordingly an analog voltage is produced across the sensor. The analog voltages from the sensors are fed to a microcontroller, which reads the values and converts the values into gas concentration in PPM (parts per million). The PPM values for all four gases are displayed on an LCD, where two levels are assigned as “Safe” and “Danger” based on the concentration of each gas. “Safe” status means the concentration of gas is not harmful and “Danger” status means the concentration of gas is harmful. A buzzer will give an alarm when the gas concentration status becomes “Danger”. Furthermore, a Bluetooth device is interfaced with the microcontroller for transferring the gas concentration data to a smartphone. For the Smartphone, application software has been developed to monitor the concentration of each toxic gas. The prototype system has been developed and tested which gives satisfactory results. It is supposed to be a helpful and cost-effective system for cleaners working in septic tanks. 
44 Prevalence of Insects in Traditionally Stored Rice at Farmhouses in Bangladesh   , Mohammad Afzal Hossain1*, Md. Abdul Awal2, Md. Monjurul Alam2, Md. Rostom Ali2, Mohammad Tofazzal Hossain Howlader3 and Afruz Zahan1 1Bangladesh Rice Research Institute, Gazipur 1701, Bangladesh; 2Dept. of Farm Power and Machinery, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh; and 3Dept. of Entomology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.  *Correspondence: engr.afzal@yahoo.com (Dr. Mohammad Afzal Hossain, Senior Scientific Officer, Bangladesh Rice Research Institute, Gazipur 1701, Bangladesh).
A survey was conducted to investigate rice storage practices at the farmer’s level and the prevalence of insects’ status through a pretested questionnaire in Mymensingh and Jashore districts, Bangladesh. For seed purposes, large, medium, and small farmers store about 40, 10, and 5 kg, respectively in the Aman season for 7 months whereas in the Boro season large and medium farmers keep about 80 and 20 kg for 5 months. Average storage time was the highest (7 months) for Boro and Aman rice by large and small farmers, respectively for consumption. Eleven storage items namely, Dole, Motka, Tin, Plastic Drum, Gunny Bag, Bamboo Gola, Dhari, Bamboo Auri, Berh, Steel Drum, and Plastic Bag were found. About 57 and 74% of farmers stored rice, among them 47 and 58% used traditional Dole in Jashore and Mymensingh, respectively. Tin and Berh (1%) were the least used storage structures. About 11 and 17%; 3 and 4% of farmers used neem leaf and chemicals especially phostoxin in storage as an insect repellent in these areas, respectively. The use of Plastic Bags increased sharply due to lightweight, availability, and low price, whereas Bamboo Gola, Berh, Motka users decreased remarkably. Relative abundance of the insect species was: Rice Moth Sitotroga cerealla, Rice Weevil Sitophilus oryzae, Red Flour Beetle Tribolium castoreum, and Lesser Meal Worm Alphitobious diaperinus. Maximum insect infestation was found in stored paddy in Dole followed by Motka, and Plastic Bag; and the least amount was observed in Plastic Drum in both regions. Three fourth of the respondents took no measures to control insect pests in stored rice.