Alamgir Hossain - Academia.edu (original) (raw)

Papers by Alamgir Hossain

IET Generation, Transmission & Distribution

The main goal of an interconnected power system is to transfer power from one area to another whi... more The main goal of an interconnected power system is to transfer power from one area to another while the network frequency and tie-line flow remain within the prescribed limits. However, both of these quantities may violate their desired values during this transfer due to disturbances in the network. This paper proposes a stratagem for choosing the right feedback path for an interconnected power system to maintain the system frequency and tie-line flows within the prescribed limits while external disturbances exist. Area control error (ACE), a combination of frequency error and tie-flow deviations, is used as the performance indicator. In the proposed approach, feedback control is designed using active disturbance rejection controller (ADRC) based load frequency control to tackle ACE. It is observed that the individual load change monitoring is sufficient for selecting the right feedback paths rather than the consideration of simultaneous load changes of all load centres. The effectiveness of the proposed controller for selecting the feedback paths has been tested by conducting several case studies. The results demonstrate that the proposed controller can reduce transient magnitude around 57% for ACE, 55% for frequency error and 72% for tie-line error as compared to the PID controller.

Journal of Social, Humanity, and Education

: Purpose: The research has been conducted to find out how the smart device is changing and contr... more : Purpose: The research has been conducted to find out how the smart device is changing and controlling human’s social, cultural, and economic lifestyles. Research methodology: The study is quantitative in nature. The multiple-choice questionnaire has been prepared to collect the data from 261 respondents through the survey method using Google format and focusing on the simple random sampling technique. Here, data were analyzed through Microsoft Excel, handmade calculation. Results: The research found that respondents’ social life (71.65%), economic life (80.84%), and cultural life (79.31%) are shaped by smart devices in a positive way. Their social life (28.35%), economic life (19.16%), and cultural life (20.69%) are also shaped by smart devices in a negative way. The portion of positive change and control is more than the portion of negative. Limitations: The study is limited by sample size, geographical area, and data which are taken by using Google format instead of face-to-face interaction with respondents due to the COVID-19 pandemic. Contribution: All sorts of people will be benefited from studying this study. They will be understood how participants adopt western culture ignoring their own tradition, value system, and culture. Keywords: 1. Change 2. Control 3. Habit 4. Lifestyle 5. Smart devices

In this paper, a multi-operator differential evolution algorithm (MODE) is proposed to solve the ... more In this paper, a multi-operator differential evolution algorithm (MODE) is proposed to solve the Optimal Power Flow (OPF) problem and is called MODE-OPF. The MODE-OPF utilizes the strengths of more than one differential evolution (DE) operator in a single algorithmic framework. Additionally, an adaptive method (AM) is proposed to update the number of solutions evolved by each DE operator based on both the diversity of population and quality of solutions. This adaptive method has the ability to maintain diversity at the early stages of the optimization process and boost convergence at the later ones. The performance of the proposed MODE-OPF is tested by solving OPF problems for both small and large IEEE bus systems (i.e., IEEE-30 and IEEE-118) while considering the intermittent solar and wind power generation. To prove the suitability of this proposed algorithm, its performance has been compared against several state-of-the-art optimization algorithms, where MODE-OPF outperforms othe...

Adaptive Agents and Multi-Agents Systems, May 6, 2013

Communication between human beings involves complex and rich means. In the past decades, computer... more Communication between human beings involves complex and rich means. In the past decades, computers have successfully supported human in a variety of tasks such as calculating and memorizing. However, when confronted with the demand of multimodal interaction with users, can these indispensable partners make us satisfied? This research might answer this question.

The study aimed to evaluate the treatment outcomes of single-channel and tri-channel applicators ... more The study aimed to evaluate the treatment outcomes of single-channel and tri-channel applicators for cervical cancer patients based on high dose rate brachytherapy using an artificial neural network. An artificial neural network (ANNs) model is proposed to predict the treatment outcomes for the single-channel applicator and tri-channel applicator in cervical cancer for high dose rate brachytherapy. Fifty-four patients of cervical cancer who were receiving external beam radiation therapy (EBRT) of 40-50 cGy, with chemotherapy, were selected in this study from 37 patients with cervical cancer being used to train and 17 for testing in this model. A model was developed for intracavitary brachytherapy to estimate the comparison of treatment outcomes for the single-channel applicator and tri-channel applicators, demonstrating the sensitivity 100% and specificity 100 % and accuracy 100% for training and 87.5%, 77.8%, and 82.4% for testing, respectively, including AUC= 0.961. The survival r...

Journal of History and Social Sciences, 2021

A thematic analysis of the extreme level of depression circulating on the lockdown society during... more A thematic analysis of the extreme level of depression circulating on the lockdown society during the Covid-19 situation reveals problems and challenges that the young generation faced. They expressed the hardships of surviving lockdown while ruining the fresh dreams of their fresh minds. Their ruining dreams presented as helpless, depressed, and even suicidal when they discover that none of their coping mechanism helps them. Some people decided to commit suicide but return to normal life by giving up their decision after much thought. The qualitative research design is the most appropriate design for this study considering the short period and lack of available respondents because they do not want to share these sensitive issues. In this research, through the case study, is being tried to find out the real causes of the suicidal ideation of the respondents and the KII (Key Informant Interview) method has been taken to know the parental feelings on the suicidal ideation using the sn...

SSRN Electronic Journal, 2022

We implement a data assimilation framework for integrating ice surface and terminus position obse... more We implement a data assimilation framework for integrating ice surface and terminus position observations into a numerical ice-flow model. The model uses the well-known shallow shelf approximation (SSA) coupled to a level set method to capture ice motion and changes in the glacier geometry. The level set method explicitly tracks the evolving ice-atmosphere and ice-ocean boundaries for a marine outlet glacier. We use an Ensemble Transform Kalman Filter to assimilate observations of ice surface elevation and lateral ice extent by updating the level set function that describes the ice interface. Numerical experiments on an idealized marine-terminating glacier demonstrate the effectiveness of our data assimilation approach for tracking seasonal and multi-year glacier advance and retreat cycles. The model is also applied to simulate Helheim Glacier, a major tidewater-terminating glacier of the Greenland Ice Sheet that has experienced a recent history of rapid retreat. By assimilating observations from remotely-sensed surface elevation profiles we are able to more accurately track the migrating glacier terminus and glacier surface changes. These results support the use of data assimilation methodologies for obtaining more accurate predictions of short-term ice sheet dynamics.

The present study was focused on the clinical prevalence and influencing factors for the occurren... more The present study was focused on the clinical prevalence and influencing factors for the occurrence of PPR of goats in Sylhet region. A total of 1857 naturally infected diseased goats data were collected from the Upazilla Veterinary Hospital in Sylhet region over a period of 12 months. All types of information about diseases including age, sex, breed, season, vaccination history, body condition and given treatment were recorded for the study. The disease was diagnosed on the basis of clinical findings of infected goat. The overall clinical prevalence, highest and lowest prevalence was found 18.09 %, 46.67 %, 1.79 % respectively. Young (21.58 %) was severely affected than that of other age group. The male goat (19.05 %) was affected than female goat (16.62 %). Black Bengal goats were more susceptible (20.29 %) than Jamunapari (16.52 %) and cross breed (14.19 %). The disease was more prevalent in winter season. Analysis of the epidemiological data reveals that PPR in Bangladesh mainta...

With the growth of modern civilization and industrialization in worldwide, the demand for energy ... more With the growth of modern civilization and industrialization in worldwide, the demand for energy is increasing day by day. Majority of the world-s energy needs are met through fossil fuels and natural gas. As a result the amount of fossil fuels is on diminishing from year to year. Since the fossil fuel is nonrenewable, so fuel price is gouging as a consequence of spiraling demand and diminishing supply. At present the power generation of our country is mainly depends on imported fossil fuels. To reduce the dependency on imported fuel, the use of renewable sources has become more popular. In Bangladesh coconut is widely growing tree. Especially in the southern part of the country a large area will be found where coconut tree is considered as natural asset. So, our endeavor was to use the coconut oil as a renewable and alternative fuel. This article shows the prospect of coconut oil as a renewable and alternative fuel of diesel fuel. Since diesel engine has a versatile uses including ...

CERN European Organization for Nuclear Research - Zenodo, Jan 30, 2014

Scarcity in energy sector is a major problem, which can hamper the growing development of a count... more Scarcity in energy sector is a major problem, which can hamper the growing development of a country. Bangladesh is one of the electricity-deprived countries; however, the energy demand of Bangladesh is increasing day by day. Due to the shortage of natural resources and environmental issues, many nations are now moving towards renewable energy. Among various form of renewable energy, wind energy is one of most potential source. In this paper, the present energy condition of Bangladesh is discussed and the necessity of moving towards renewable energy is clarified. The wind speed found at different locations at different heights and different years from the survey of several organizations are presented. Although, the results of installed low capacity wind turbines (from few kW to few tens of kW) operated by private or government organization at different places in Bangladesh are not so encouraging; however, it is shown that Bangladesh has a high potential of using large wind turbine (MW range) for capturing wind energy at different places. The present condition of wind energy in Bangladesh and other countries in the world are also presented to emphasize the requisite of moving towards wind energy.

Adaptive Agents and Multi-Agents Systems, May 5, 2014

In this paper, we present an intelligent facial emotion recognition system with real-time face tr... more In this paper, we present an intelligent facial emotion recognition system with real-time face tracking for a humanoid robot. The system is able to detect facial actions and emotions from images with up to 60 degrees of pose variations. We employ the Active Appearance Model to perform real-time face tracking and extract both texture and geometric representations of images. A POSIT algorithm is also used to identify head rotations. The extracted texture and shape features are employed to detect 18 facial actions and seven basic emotions. The overall system is integrated with a humanoid robot platform to further extend its vision APIs. The system proved to be able to deal with challenging facial emotion recognition tasks with various pose variations.

Abstracts of the Annual Meetings, Japanese Society of Soil Science and Plant Nutrition, 2002

— This Evaporative cooling is an environmentally friendly air cooling system that operates using ... more — This Evaporative cooling is an environmentally friendly air cooling system that operates using induced processes of heat and mass transfer, where water and air are the working fluids. It consists, specifically, in water evaporation, induced by the passage of an air flow, thus decreasing the air temperature. In Bangladesh, Evaporative cooler is already being used in different industries that is imported from varies countries. But most of the cases these are not efficient due to installation error & lack of adjustment with climate change over the year. Initially this paper presents the construction of an evaporative cooler using a test bench of cooling tower for the air flow and water supply facility where local materials were used as evaporative pad. Afterwards; it presents installation in different situation & adjustment of the cooling units with the climate. It concludes that under proper installation, evaporative cooling system is very cost effective & has a very large potential...

International Journal of Computers and Applications, 2020

Cloud computing is a unique network or environment where access, maintenance and process can be d... more Cloud computing is a unique network or environment where access, maintenance and process can be done from any part of the world. It is a customized internet-based computer server. It is a current trend of modern technology. For the massive computational power, it is the best option for storing data. There is no uncertainty that Cloud Data Server offers quick and solid types of assistance to its customers. When data is storing in the cloud storage the most important thing comes is the security of data. So, in recent years, cloud security is so much important issue because of the increasing of data. For the security of cloud computing, in this research, a hybrid verification technique is made which is based on biometric and encryption systems. In order to achieve strong and secure technique, this work use fingerprint as biometric technique and advanced encryption standard as a trustworthy encryption system. The primary goal of this paper is to avert information access from cloud information stockpiling focuses by unapproved clients. This new data security system can provide efficient authentication of cloud computing.

PRIMUS, 2021

We present a question bank consisting of over 250 multiple-choice and true-false questions coveri... more We present a question bank consisting of over 250 multiple-choice and true-false questions covering a broad range of material typically taught in an introductory undergraduate course in numerical analysis or scientific computing. The questions are ideal for polling students during lectures by means of a student response system that uses clicker remotes or smartphones running a suitable app. We describe our experiences implementing these clicker questions in a recent class and provide evidence of their effectiveness in terms of testing students' prior knowledge, gauging understanding of new material, increasing participation, and especially improving student satisfaction. Our conclusions are supported by a mid-semester student survey as well as anecdotal observations. The question bank has been released as an open-access educational resource under a Creative Commons license (BY-NC-SA) for free use by the mathematics community.

"The war with pandemic world "LOCK DOWN LIFE, 2020

There is a time when the corona virus comes when I don't know what the meaning of lockdown is... more There is a time when the corona virus comes when I don't know what the meaning of lockdown is! I do not know what the real form of the epidemic is! It's like a real death procession in the morning,dreaming in your sleep at night.

In computer science and engineering Particle Swarm Optimization (PSO) is a very good clustering f... more In computer science and engineering Particle Swarm Optimization (PSO) is a very good clustering for swarm optimization. This is very easy to implement &there are few parameters to adjust. The particle swarm optimization concept consists of, at each time step, changing the velocity of (accelerating) each particle toward its pBest and lBest locations (local version of PSO). Acceleration is weighted by a random term, with separate random numbers being generated for acceleration toward pBest and lBestlocations. In past several years, PSO has been successfully applied in many research and application areas. It is demonstrated that PSO gets better results in a faster, cheaper way compared with other methods. Another reason that PSO is attractive is that there are few parameters to adjust. One version, with slight variations, works well in a wide variety of applications. Particle swarm optimization has been used for approaches that can be used across a wide range of applications, as well a...

The strength of the financial system as a whole depends crucially on the developing connection be... more The strength of the financial system as a whole depends crucially on the developing connection between the financial system and the existent economy, and in addition on the system of interconnections between monetary organizations and the strategic interactions and externalities that these linkages create. There is now an extensive harmony in the policy makers that intensification of the macro prudential orientation of regulatory and supervisory frameworks is indispensable for the support of fiscal solidity. But understanding is still inadequate on these tools. This paper reviews the effectiveness of macro prudential tools in controlling systemic risk over time and across institutions and markets. The study exhibits that many of the most commonly used instruments are effective in tumbling pro-cyclicality and the usefulness is responsive to the type of shock facing the monetary sector. They can also interrelate with various other policies, such as monetary and micro prudential, raisi...

International Journal of Engineering, Science and Information Technology, 2021

Smart devices have become an essential part of human life with a bunch of modern features and fac... more Smart devices have become an essential part of human life with a bunch of modern features and facilities. Even in health care, health management, education, and the science sector use intelligent devices for their convenience. With the assertion of its wellness, people forget its downside and treating smart devices as their primary need. Whereas smart devices are tracking and collecting all user movements, including interest, boredom, and daily activity. As the data remain store in vendors' servers, and lightweight smart devices follow weak security, so data leakage also makes the data available to unauthorized parties. This sensitive data uses by vendors and third-party for business and various purposes to influence and manipulate human behavior by showing content mapping to the collected data. Because of the huge involvement of the user in smart-device, marketing strategy also changed a lot. Digital marketing has been introduced and become a key to success for many businesse...

AIP Conference Proceedings, 2018

The objective of the study is to analyze three-dimensional fluid flow through annular pipeline wi... more The objective of the study is to analyze three-dimensional fluid flow through annular pipeline with multiphase fluids using Computational Fluid Dynamics (CFD) simulation. ANSYS Fluent version 16 platform is used to perform the simulation. Eulerian model with Reynolds Stress Model (RSM) turbulence closure is adopted to analyze multiphase fluid flow in annular flow line. The results are validated with existing experimental data and empirical correlations. A robust simulation model is developed that can be used further for different applied cases. Geometry and boundary conditions of flow are adopted from experimental works to validate the simulation. The sensitivity analysis is also conducted to observe the flow characteristics. Fluid inlet velocity of distinct phases, inner pipe rotation and eccentricity are used as input or independent parameter and pressure gradient (pressure loss per unit length) and local concentration profile at different sections of geometry are the primary output parameter to analyze. The key results show that changing inner pipe rotation and eccentricity have a significant impact on output pressure and local particle distribution which eventually help to find way out from particle blockage. The outcome of this study will help oil and gas industry in designing the pipeline.