Mohaimenul Islam - Academia.edu (original) (raw)

Papers by Mohaimenul Islam

2022 International Conference on Energy and Power Engineering (ICEPE)

Journal of Personalized Medicine

The potential impact of statins on the risk of Parkinson’s disease (PD) is still controversial; t... more The potential impact of statins on the risk of Parkinson’s disease (PD) is still controversial; therefore, we conducted a comprehensive meta-analysis of observational studies to examine the effect of statin use on the risk of PD. We searched electronic databases, such as PubMed, EMBASE, Scopus, and Web of Science, for articles published between 1 January 2000 and 15 March 2022. Cohort studies which examined the association between statins and PD risk in the general population were also included. Two authors assessed the data and extracted all potential information for analysis. Random effects meta-analyses were performed to measure the risk ratio (RR) and 95% confidence intervals (CIs). Eighteen cohort studies including 3.7 million individuals with 31,153 PD participants were identified. In statin users, compared with non-users, the RR for PD was 0.79 (95% CI: 0.68–0.91). In a subgroup analysis of PD, this association was observed with medium and high quality, and the studies were a...

2022 International Conference on Energy and Power Engineering (ICEPE)

Cancers

Previous epidemiological studies have shown that proton pump inhibitor (PPI) may modify the risk ... more Previous epidemiological studies have shown that proton pump inhibitor (PPI) may modify the risk of pancreatic cancer. We conducted an updated systematic review and meta-analysis of observational studies assessing the effect of PPI on pancreatic cancer. PubMed, Embase, Scopus, and Web of Science were searched for studies published between 1 January 2000, and 1 May 2022. We only included studies that assessed exposure to PPI, reported pancreatic cancer outcomes, and provided effect sizes (hazard ratio or odds ratio) with 95% confidence intervals (CIs). We calculated an adjusted pooled risk ratio (RR) with 95%CIs using the random-effects model. Eleven studies (eight case–control and three cohorts) that reported 51,629 cases of pancreatic cancer were included. PPI was significantly associated with a 63% increased risk of pancreatic cancer (RRadj. 1.63, 95%CI: 1.19–2.22, p = 0.002). Subgroup analysis showed that the pooled RR for rabeprazole and lansoprazole was 4.08 (95%CI: 0.61–26.92)...

Energy and Power Engineering

The possibilities for improving energy efficiency in ready-made composite garment factories in Ba... more The possibilities for improving energy efficiency in ready-made composite garment factories in Bangladesh are assessed in this study. This work aims to understand the impacts of energy consumption on garment production and determine the scope of energy efficiency improvement based on energy-related data collected from a garment factory over a three-year period (2018-2020). Data from 2018 is used as the baseline and is compared to data from 2019 and 2020. It has been discovered that energy consumption has a seasonal impact. Despite the fact that electricity consumption decreased significantly during the 2020 pandemic, the energy consumption pattern in 2020 was found to be similar to that of 2018 and 2019. To improve energy efficiency, recommendations are made to modify the boiler, water pumps, gas generators, electrical motors, and lighting systems in specific ways. These suggested actions could save BDT 95 million (1.15 million US dollars) on power generation and BDT 20.5 million (0.25 million US dollars) on natural gas used for power and heat generation. These would result in a 3.75 percent reduction in the unit (kWh/kg) production energy requirement and a 3.65 percent reduction in natural gas usage per unit production, respectively, when compared to current conditions. Furthermore, these changes will provide an opportunity to reduce greenhouse gas emissions by 9.78%.

2019 International Conference on Energy and Power Engineering (ICEPE)

Interest on generating power from photovoltaic (PV) system is increasing day by day. Power genera... more Interest on generating power from photovoltaic (PV) system is increasing day by day. Power generation from such systems is affected by some factors that can be detected in early stage through proper monitoring. Infrared (IR) thermography is a well-known non-destructive technique which can detect localized heating and quantify hotspot area. In this study active thermography has been applied to detect possible anomalies based on the prediction of visual inspection data. Also temperature dependence on possible performance degradation have been analyzed. One of the main findings is that PV modules have some post manufacturing defects which is visually observable. Junction box creates heat that may impact on the module performance. Also difference between hotspot point temperature and the ambient temperature is found increase linearly with respect to module performance degradation.

Journal of Personalized Medicine

Currently, the International Classification of Diseases (ICD) codes are being used to improve cli... more Currently, the International Classification of Diseases (ICD) codes are being used to improve clinical, financial, and administrative performance. Inaccurate ICD coding can lower the quality of care, and delay or prevent reimbursement. However, selecting the appropriate ICD code from a patient’s clinical history is time-consuming and requires expert knowledge. The rapid spread of electronic medical records (EMRs) has generated a large amount of clinical data and provides an opportunity to predict ICD codes using deep learning models. The main objective of this study was to use a deep learning-based natural language processing (NLP) model to accurately predict ICD-10 codes, which could help providers to make better clinical decisions and improve their level of service. We retrospectively collected clinical notes from five outpatient departments (OPD) from one university teaching hospital between January 2016 and December 2016. We applied NLP techniques, including global vectors, word...

2019 International Conference on Energy and Power Engineering (ICEPE), 2019

This work investigates the performance of commercially available poly and mono Si photovoltaic (P... more This work investigates the performance of commercially available poly and mono Si photovoltaic (PV) modules under different temperature and illumination conditions. While mono Si module shows better solar cell features in terms of series resistance, reverse saturation current and fill factor, the photo generated current and output power of mono Si module are found to be much lower than those obtained with poly Si module. Lower photo-generated current in mono Si module is attributed to higher recombination in thick bulk layer of mono Si cell, which is probably due to the lower than required crystal grade of mono Si module. The findings of this work suggest the need for better regulation for quality control of commercially available PV modules.

2021 International Conference on Electrical, Computer and Energy Technologies (ICECET), 2021

In an Agricultural country like Bangladesh, agriculture plays a vital role in their economic grow... more In an Agricultural country like Bangladesh, agriculture plays a vital role in their economic growth. However, during dry seasons it is very challenging for the farmers to collect an adequate amount of water for irrigation purposes. Using a Photovoltaic system (PV) for a water pumping system is one of the most straightforward systems. The primary purpose of using this system is, it is environment friendly and cost-effective. In addition, it can be used without batteries or generators during the daytime. This study examines the improved and financially savvy plan for a solar- powered pumping framework to give adequate water for irrigation. February to April and also September to November are the planting seasons in Bangladesh. Due to deficient rainfall, the months of November and February are the most critical. The location that we considered for this study the amount required is around 220 thousand liters. This project intends to gather the necessary quantity of water for irrigation, mostly during the two crop seasons stated. In this case, an optimal tilt angle (=38.71°, south facing) is determined for the smallest needed panel size, which can provide the appropriate volume of water during the cultivation time for the irrigation system. Contribution-The main contribution of this work is to design a directly coupled PV pumping system for irrigation purposes with an optimized tilt angle considering the climate of Bangladesh.

Cancer Science, 2021

Levothyroxine is a widely prescribed medication for the treatment of an underactive thyroid. The ... more Levothyroxine is a widely prescribed medication for the treatment of an underactive thyroid. The relationship between levothyroxine use and cancer risk is largely underdetermined. To investigate the magnitude of the possible association between levothyroxine use and cancer risk, this retrospective case‐control study was conducted using Taiwan’s Health and Welfare Data Science Center database. Cases were defined as all patients who were aged ≥20 years and had a first‐time diagnosis for cancer at any site for the period between 2001 and 2011. Multivariable conditional logistic regression models were used to calculate an adjusted odds ratio (AOR) to reduce potential confounding factors. A total of 601 733 cases and 2 406 932 controls were included in the current study. Levothyroxine users showed a 50% higher risk of cancer at any site (AOR: 1.50, 95% CI: 1.46‐1.54; P < .0001) compared with non–users. Significant increased risks were also observed for brain cancer (AOR: 1.90, 95% CI:...

2020 IEEE Region 10 Symposium (TENSYMP), 2020

Bifacial module based multilevel solar panel system (MSPS) is proposed in this paper for its use ... more Bifacial module based multilevel solar panel system (MSPS) is proposed in this paper for its use in urban areas which will be able to harness more solar energy while occupying much less space than the conventional fixed panel system. Bifacial module can harnesses diffused and reflected irradiance on the rear side of the module which cannot be harnessed by mono-facial one. A detailed performance analysis shows that the proposed system harnesses 109.8% more energy than the conventional monofacial fixed panel system and 57.37% more energy than the previously proposed mono-facial multilevel solar panel system.

Free to read on publisher website Being a developing country, Bangladesh has to meet the huge ene... more Free to read on publisher website Being a developing country, Bangladesh has to meet the huge energy demand for her massive population giving only 63% of total population the access to electricity. Due to her limited non-renewable energy resources like coal, oil, and others, she need to face the challenge looking forward to the scope for the renewable energy resources where Geothermal energy can be a good choice. According to the geographical position of Bangladesh, the north-western part has some potential sites for installation of geothermal power plants. Most of the analysis shows that the large geothermal gradient makes the regions like Barakupuria of Dinajpur district and Thakurgaon of Rangpur division the most favorable place for extracting geothermal power. The Singra sub district of Bogra region is also favorable and the other parts are scattered in different parts of Bangladesh like Shitakund, Sylhet, Mymensingh, Panba, and Faridpur. Herewith, it is suggested in this paper ...

Studies in health technology and informatics, 2020

We developed a deep learning approach for accurate prediction of PCA patients one year earlier wi... more We developed a deep learning approach for accurate prediction of PCA patients one year earlier with minimal features from electronic health records. The area under the receiver operating curve for prediction of PCA was 0.94. Moreover, the sensitivity and specificity of CNN were 0.87 and 0.88, respectively.

Joint Bone Spine - In Press.Proof corrected by the author Available online since mardi 28 aout 2018

2019 International Conference on Energy and Power Engineering (ICEPE), 2019

The objective of this work is to carry out a comparative performance analysis of three types of s... more The objective of this work is to carry out a comparative performance analysis of three types of solar tracking systems, fixed, single and dual axis, in the context of Bangladesh in order to determine their suitability and cost-effectiveness for different applications. Total incident solar energy on the photovoltaic panel of same size for the three different systems has been determined for the twelve months, first without and then with considering the effect of cloud cover. The findings show that there is no significant difference in energy yield between single axis and dual axis tracker. The percent difference in total incident energy in one whole year between the single and dual axis tracker systems is found to be about 3.96% without considering the effect of cloud which further reduces to 3.44% when the effect of cloud cover is taken into consideration.

2021 IEEE 12th Energy Conversion Congress & Exposition - Asia (ECCE-Asia), 2021

Regarding clean energy production high curiosity is gained by Solar Photovoltaic (PV) worldwide. ... more Regarding clean energy production high curiosity is gained by Solar Photovoltaic (PV) worldwide. Faults in the PV modules cause significant issues for the PV systems. Detecting faults of PV modules could help to take the necessary measures. This study uses Infrared thermography (IRT) to detect the hotspot of PV modules. The objective is to develop a hotspot detection tool using ‘YOLO: You Only Look once.’ The images are converted into a data set for a classifier to detect the hotspot of PV modules. Then the learner is trained and tested with the dataset. After that, the output validates with the IRT images of PV modules. The outcome of this study is to apply a real-time object detection tool identifying the defect of the PV module. The result shows that with a more diversified data set, the confidence of detecting the hotspot increases.

2018 Joint 7th International Conference on Informatics, Electronics & Vision (ICIEV) and 2018 2nd International Conference on Imaging, Vision & Pattern Recognition (icIVPR), 2018

CZTS thin films are relatively inexpensive and so could help to improve the cost-effectiveness of... more CZTS thin films are relatively inexpensive and so could help to improve the cost-effectiveness of solar technology. In this work, the effects of various components of the dark current are investigated. A detailed mathematical model of the current density-voltage relationship of n-CdS/p-CZTS solar cell under illumination is used for this purpose. The following dark current components are considered in the analysis: diffusion, trap-assisted tunneling recombination, thermionic emission, radiative recombination, and CdS/CZTS interface recombination. It is found that trap-assisted tunneling recombination, CdS/CZTS interface recombination and thermionic emission have the greatest effect while the effects of diffusion and radiative recombination are negligible. In addition, it is found that the significance of the largest dark current component changes as donor and acceptor concentrations are altered. Using these results, the optimum values for donor and acceptor concentration of 1018 and 5*1014 cm-3, respectively, with CdS thickness of 50 nm and CZTS thickness 5 μm have been determined for the maximum efficiency of 14.4% for CdS/CZTS solar cell.

The Lancet, 2020

Background Accurate and up-to-date assessment of demographic metrics is crucial for understanding... more Background Accurate and up-to-date assessment of demographic metrics is crucial for understanding a wide range of social, economic, and public health issues that affect populations worldwide. The Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) 2019 produced updated and comprehensive demographic assessments of the key indicators of fertility, mortality, migration, and population for 204 countries and territories and selected subnational locations from 1950 to 2019. Methods 8078 country-years of vital registration and sample registration data, 938 surveys, 349 censuses, and 238 other sources were identified and used to estimate age-specific fertility. Spatiotemporal Gaussian process regression (ST-GPR) was used to generate age-specific fertility rates for 5-year age groups between ages 15 and 49 years. With extensions to age groups 10-14 and 50-54 years, the total fertility rate (TFR) was then aggregated using the estimated age-specific fertility between ages 10 and 54 years. 7417 sources were used for under-5 mortality estimation and 7355 for adult mortality. ST-GPR was used to synthesise data sources after correction for known biases. Adult mortality was measured as the probability of death between ages 15 and 60 years based on vital registration, sample registration, and sibling histories, and was also estimated using ST-GPR. HIV-free life tables were then estimated using estimates of under-5 and adult mortality rates using a relational model life table system created for GBD, which closely tracks observed agespecific mortality rates from complete vital registration when available. Independent estimates of HIV-specific mortality generated by an epidemiological analysis of HIV prevalence surveys and antenatal clinic serosurveillance and other sources were incorporated into the estimates in countries with large epidemics. Annual and single-year age estimates of net migration and population for each country and territory were generated using a Bayesian hierarchical cohort component model that analysed estimated age-specific fertility and mortality rates along with 1250 censuses and 747 population registry years. We classified location-years into seven categories on the basis of the natural rate of increase in population (calculated by subtracting the crude death rate from the crude birth rate) and the net migration rate. We computed healthy life expectancy (HALE) using years lived with disability (YLDs) per capita, life tables, and standard demographic methods. Uncertainty was propagated throughout the demographic estimation process, including fertility, mortality, and population, with 1000 draw-level estimates produced for each metric. Findings The global TFR decreased from 2•72 (95% uncertainty interval [UI] 2•66-2•79) in 2000 to 2•31 (2•17-2•46) in 2019. Global annual livebirths increased from 134•5 million (131•5-137•8) in 2000 to a peak of 139•6 million (133•0-146•9) in 2016. Global livebirths then declined to 135•3 million (127•2-144•1) in 2019. Of the 204 countries and territories included in this study, in 2019, 102 had a TFR lower than 2•1, which is considered a good approximation of replacement-level fertility. All countries in sub-Saharan Africa had TFRs above replacement level in 2019 and accounted for 27•1% (95% UI 26•4-27•8) of global livebirths. Global life expectancy at birth increased from 67•2 years (95% UI 66•8-67•6) in 2000 to 73•5 years (72•8-74•3) in 2019. The total number of deaths increased from 50•7 million (49•5-51•9) in 2000 to 56•5 million (53•7-59•2) in 2019. Under-5 deaths declined from 9•6 million (9•1-10•3) in 2000 to 5•0 million (4•3-6•0) in 2019. Global population increased by 25•7%, from 6•2 billion (6•0-6•3) in 2000 to 7•7 billion (7•5-8•0) in 2019. In 2019, 34 countries had negative natural rates of increase; in 17 of these, the population declined because immigration was not sufficient to counteract the negative rate of decline.

Materials Letters, 2019

This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

2022 International Conference on Energy and Power Engineering (ICEPE)

Journal of Personalized Medicine

The potential impact of statins on the risk of Parkinson’s disease (PD) is still controversial; t... more The potential impact of statins on the risk of Parkinson’s disease (PD) is still controversial; therefore, we conducted a comprehensive meta-analysis of observational studies to examine the effect of statin use on the risk of PD. We searched electronic databases, such as PubMed, EMBASE, Scopus, and Web of Science, for articles published between 1 January 2000 and 15 March 2022. Cohort studies which examined the association between statins and PD risk in the general population were also included. Two authors assessed the data and extracted all potential information for analysis. Random effects meta-analyses were performed to measure the risk ratio (RR) and 95% confidence intervals (CIs). Eighteen cohort studies including 3.7 million individuals with 31,153 PD participants were identified. In statin users, compared with non-users, the RR for PD was 0.79 (95% CI: 0.68–0.91). In a subgroup analysis of PD, this association was observed with medium and high quality, and the studies were a...

2022 International Conference on Energy and Power Engineering (ICEPE)

Cancers

Previous epidemiological studies have shown that proton pump inhibitor (PPI) may modify the risk ... more Previous epidemiological studies have shown that proton pump inhibitor (PPI) may modify the risk of pancreatic cancer. We conducted an updated systematic review and meta-analysis of observational studies assessing the effect of PPI on pancreatic cancer. PubMed, Embase, Scopus, and Web of Science were searched for studies published between 1 January 2000, and 1 May 2022. We only included studies that assessed exposure to PPI, reported pancreatic cancer outcomes, and provided effect sizes (hazard ratio or odds ratio) with 95% confidence intervals (CIs). We calculated an adjusted pooled risk ratio (RR) with 95%CIs using the random-effects model. Eleven studies (eight case–control and three cohorts) that reported 51,629 cases of pancreatic cancer were included. PPI was significantly associated with a 63% increased risk of pancreatic cancer (RRadj. 1.63, 95%CI: 1.19–2.22, p = 0.002). Subgroup analysis showed that the pooled RR for rabeprazole and lansoprazole was 4.08 (95%CI: 0.61–26.92)...

Energy and Power Engineering

The possibilities for improving energy efficiency in ready-made composite garment factories in Ba... more The possibilities for improving energy efficiency in ready-made composite garment factories in Bangladesh are assessed in this study. This work aims to understand the impacts of energy consumption on garment production and determine the scope of energy efficiency improvement based on energy-related data collected from a garment factory over a three-year period (2018-2020). Data from 2018 is used as the baseline and is compared to data from 2019 and 2020. It has been discovered that energy consumption has a seasonal impact. Despite the fact that electricity consumption decreased significantly during the 2020 pandemic, the energy consumption pattern in 2020 was found to be similar to that of 2018 and 2019. To improve energy efficiency, recommendations are made to modify the boiler, water pumps, gas generators, electrical motors, and lighting systems in specific ways. These suggested actions could save BDT 95 million (1.15 million US dollars) on power generation and BDT 20.5 million (0.25 million US dollars) on natural gas used for power and heat generation. These would result in a 3.75 percent reduction in the unit (kWh/kg) production energy requirement and a 3.65 percent reduction in natural gas usage per unit production, respectively, when compared to current conditions. Furthermore, these changes will provide an opportunity to reduce greenhouse gas emissions by 9.78%.

2019 International Conference on Energy and Power Engineering (ICEPE)

Interest on generating power from photovoltaic (PV) system is increasing day by day. Power genera... more Interest on generating power from photovoltaic (PV) system is increasing day by day. Power generation from such systems is affected by some factors that can be detected in early stage through proper monitoring. Infrared (IR) thermography is a well-known non-destructive technique which can detect localized heating and quantify hotspot area. In this study active thermography has been applied to detect possible anomalies based on the prediction of visual inspection data. Also temperature dependence on possible performance degradation have been analyzed. One of the main findings is that PV modules have some post manufacturing defects which is visually observable. Junction box creates heat that may impact on the module performance. Also difference between hotspot point temperature and the ambient temperature is found increase linearly with respect to module performance degradation.

Journal of Personalized Medicine

Currently, the International Classification of Diseases (ICD) codes are being used to improve cli... more Currently, the International Classification of Diseases (ICD) codes are being used to improve clinical, financial, and administrative performance. Inaccurate ICD coding can lower the quality of care, and delay or prevent reimbursement. However, selecting the appropriate ICD code from a patient’s clinical history is time-consuming and requires expert knowledge. The rapid spread of electronic medical records (EMRs) has generated a large amount of clinical data and provides an opportunity to predict ICD codes using deep learning models. The main objective of this study was to use a deep learning-based natural language processing (NLP) model to accurately predict ICD-10 codes, which could help providers to make better clinical decisions and improve their level of service. We retrospectively collected clinical notes from five outpatient departments (OPD) from one university teaching hospital between January 2016 and December 2016. We applied NLP techniques, including global vectors, word...

2019 International Conference on Energy and Power Engineering (ICEPE), 2019

This work investigates the performance of commercially available poly and mono Si photovoltaic (P... more This work investigates the performance of commercially available poly and mono Si photovoltaic (PV) modules under different temperature and illumination conditions. While mono Si module shows better solar cell features in terms of series resistance, reverse saturation current and fill factor, the photo generated current and output power of mono Si module are found to be much lower than those obtained with poly Si module. Lower photo-generated current in mono Si module is attributed to higher recombination in thick bulk layer of mono Si cell, which is probably due to the lower than required crystal grade of mono Si module. The findings of this work suggest the need for better regulation for quality control of commercially available PV modules.

2021 International Conference on Electrical, Computer and Energy Technologies (ICECET), 2021

In an Agricultural country like Bangladesh, agriculture plays a vital role in their economic grow... more In an Agricultural country like Bangladesh, agriculture plays a vital role in their economic growth. However, during dry seasons it is very challenging for the farmers to collect an adequate amount of water for irrigation purposes. Using a Photovoltaic system (PV) for a water pumping system is one of the most straightforward systems. The primary purpose of using this system is, it is environment friendly and cost-effective. In addition, it can be used without batteries or generators during the daytime. This study examines the improved and financially savvy plan for a solar- powered pumping framework to give adequate water for irrigation. February to April and also September to November are the planting seasons in Bangladesh. Due to deficient rainfall, the months of November and February are the most critical. The location that we considered for this study the amount required is around 220 thousand liters. This project intends to gather the necessary quantity of water for irrigation, mostly during the two crop seasons stated. In this case, an optimal tilt angle (=38.71°, south facing) is determined for the smallest needed panel size, which can provide the appropriate volume of water during the cultivation time for the irrigation system. Contribution-The main contribution of this work is to design a directly coupled PV pumping system for irrigation purposes with an optimized tilt angle considering the climate of Bangladesh.

Cancer Science, 2021

Levothyroxine is a widely prescribed medication for the treatment of an underactive thyroid. The ... more Levothyroxine is a widely prescribed medication for the treatment of an underactive thyroid. The relationship between levothyroxine use and cancer risk is largely underdetermined. To investigate the magnitude of the possible association between levothyroxine use and cancer risk, this retrospective case‐control study was conducted using Taiwan’s Health and Welfare Data Science Center database. Cases were defined as all patients who were aged ≥20 years and had a first‐time diagnosis for cancer at any site for the period between 2001 and 2011. Multivariable conditional logistic regression models were used to calculate an adjusted odds ratio (AOR) to reduce potential confounding factors. A total of 601 733 cases and 2 406 932 controls were included in the current study. Levothyroxine users showed a 50% higher risk of cancer at any site (AOR: 1.50, 95% CI: 1.46‐1.54; P < .0001) compared with non–users. Significant increased risks were also observed for brain cancer (AOR: 1.90, 95% CI:...

2020 IEEE Region 10 Symposium (TENSYMP), 2020

Bifacial module based multilevel solar panel system (MSPS) is proposed in this paper for its use ... more Bifacial module based multilevel solar panel system (MSPS) is proposed in this paper for its use in urban areas which will be able to harness more solar energy while occupying much less space than the conventional fixed panel system. Bifacial module can harnesses diffused and reflected irradiance on the rear side of the module which cannot be harnessed by mono-facial one. A detailed performance analysis shows that the proposed system harnesses 109.8% more energy than the conventional monofacial fixed panel system and 57.37% more energy than the previously proposed mono-facial multilevel solar panel system.

Free to read on publisher website Being a developing country, Bangladesh has to meet the huge ene... more Free to read on publisher website Being a developing country, Bangladesh has to meet the huge energy demand for her massive population giving only 63% of total population the access to electricity. Due to her limited non-renewable energy resources like coal, oil, and others, she need to face the challenge looking forward to the scope for the renewable energy resources where Geothermal energy can be a good choice. According to the geographical position of Bangladesh, the north-western part has some potential sites for installation of geothermal power plants. Most of the analysis shows that the large geothermal gradient makes the regions like Barakupuria of Dinajpur district and Thakurgaon of Rangpur division the most favorable place for extracting geothermal power. The Singra sub district of Bogra region is also favorable and the other parts are scattered in different parts of Bangladesh like Shitakund, Sylhet, Mymensingh, Panba, and Faridpur. Herewith, it is suggested in this paper ...

Studies in health technology and informatics, 2020

We developed a deep learning approach for accurate prediction of PCA patients one year earlier wi... more We developed a deep learning approach for accurate prediction of PCA patients one year earlier with minimal features from electronic health records. The area under the receiver operating curve for prediction of PCA was 0.94. Moreover, the sensitivity and specificity of CNN were 0.87 and 0.88, respectively.

Joint Bone Spine - In Press.Proof corrected by the author Available online since mardi 28 aout 2018

2019 International Conference on Energy and Power Engineering (ICEPE), 2019

The objective of this work is to carry out a comparative performance analysis of three types of s... more The objective of this work is to carry out a comparative performance analysis of three types of solar tracking systems, fixed, single and dual axis, in the context of Bangladesh in order to determine their suitability and cost-effectiveness for different applications. Total incident solar energy on the photovoltaic panel of same size for the three different systems has been determined for the twelve months, first without and then with considering the effect of cloud cover. The findings show that there is no significant difference in energy yield between single axis and dual axis tracker. The percent difference in total incident energy in one whole year between the single and dual axis tracker systems is found to be about 3.96% without considering the effect of cloud which further reduces to 3.44% when the effect of cloud cover is taken into consideration.

2021 IEEE 12th Energy Conversion Congress & Exposition - Asia (ECCE-Asia), 2021

Regarding clean energy production high curiosity is gained by Solar Photovoltaic (PV) worldwide. ... more Regarding clean energy production high curiosity is gained by Solar Photovoltaic (PV) worldwide. Faults in the PV modules cause significant issues for the PV systems. Detecting faults of PV modules could help to take the necessary measures. This study uses Infrared thermography (IRT) to detect the hotspot of PV modules. The objective is to develop a hotspot detection tool using ‘YOLO: You Only Look once.’ The images are converted into a data set for a classifier to detect the hotspot of PV modules. Then the learner is trained and tested with the dataset. After that, the output validates with the IRT images of PV modules. The outcome of this study is to apply a real-time object detection tool identifying the defect of the PV module. The result shows that with a more diversified data set, the confidence of detecting the hotspot increases.

2018 Joint 7th International Conference on Informatics, Electronics & Vision (ICIEV) and 2018 2nd International Conference on Imaging, Vision & Pattern Recognition (icIVPR), 2018

CZTS thin films are relatively inexpensive and so could help to improve the cost-effectiveness of... more CZTS thin films are relatively inexpensive and so could help to improve the cost-effectiveness of solar technology. In this work, the effects of various components of the dark current are investigated. A detailed mathematical model of the current density-voltage relationship of n-CdS/p-CZTS solar cell under illumination is used for this purpose. The following dark current components are considered in the analysis: diffusion, trap-assisted tunneling recombination, thermionic emission, radiative recombination, and CdS/CZTS interface recombination. It is found that trap-assisted tunneling recombination, CdS/CZTS interface recombination and thermionic emission have the greatest effect while the effects of diffusion and radiative recombination are negligible. In addition, it is found that the significance of the largest dark current component changes as donor and acceptor concentrations are altered. Using these results, the optimum values for donor and acceptor concentration of 1018 and 5*1014 cm-3, respectively, with CdS thickness of 50 nm and CZTS thickness 5 μm have been determined for the maximum efficiency of 14.4% for CdS/CZTS solar cell.

The Lancet, 2020

Background Accurate and up-to-date assessment of demographic metrics is crucial for understanding... more Background Accurate and up-to-date assessment of demographic metrics is crucial for understanding a wide range of social, economic, and public health issues that affect populations worldwide. The Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) 2019 produced updated and comprehensive demographic assessments of the key indicators of fertility, mortality, migration, and population for 204 countries and territories and selected subnational locations from 1950 to 2019. Methods 8078 country-years of vital registration and sample registration data, 938 surveys, 349 censuses, and 238 other sources were identified and used to estimate age-specific fertility. Spatiotemporal Gaussian process regression (ST-GPR) was used to generate age-specific fertility rates for 5-year age groups between ages 15 and 49 years. With extensions to age groups 10-14 and 50-54 years, the total fertility rate (TFR) was then aggregated using the estimated age-specific fertility between ages 10 and 54 years. 7417 sources were used for under-5 mortality estimation and 7355 for adult mortality. ST-GPR was used to synthesise data sources after correction for known biases. Adult mortality was measured as the probability of death between ages 15 and 60 years based on vital registration, sample registration, and sibling histories, and was also estimated using ST-GPR. HIV-free life tables were then estimated using estimates of under-5 and adult mortality rates using a relational model life table system created for GBD, which closely tracks observed agespecific mortality rates from complete vital registration when available. Independent estimates of HIV-specific mortality generated by an epidemiological analysis of HIV prevalence surveys and antenatal clinic serosurveillance and other sources were incorporated into the estimates in countries with large epidemics. Annual and single-year age estimates of net migration and population for each country and territory were generated using a Bayesian hierarchical cohort component model that analysed estimated age-specific fertility and mortality rates along with 1250 censuses and 747 population registry years. We classified location-years into seven categories on the basis of the natural rate of increase in population (calculated by subtracting the crude death rate from the crude birth rate) and the net migration rate. We computed healthy life expectancy (HALE) using years lived with disability (YLDs) per capita, life tables, and standard demographic methods. Uncertainty was propagated throughout the demographic estimation process, including fertility, mortality, and population, with 1000 draw-level estimates produced for each metric. Findings The global TFR decreased from 2•72 (95% uncertainty interval [UI] 2•66-2•79) in 2000 to 2•31 (2•17-2•46) in 2019. Global annual livebirths increased from 134•5 million (131•5-137•8) in 2000 to a peak of 139•6 million (133•0-146•9) in 2016. Global livebirths then declined to 135•3 million (127•2-144•1) in 2019. Of the 204 countries and territories included in this study, in 2019, 102 had a TFR lower than 2•1, which is considered a good approximation of replacement-level fertility. All countries in sub-Saharan Africa had TFRs above replacement level in 2019 and accounted for 27•1% (95% UI 26•4-27•8) of global livebirths. Global life expectancy at birth increased from 67•2 years (95% UI 66•8-67•6) in 2000 to 73•5 years (72•8-74•3) in 2019. The total number of deaths increased from 50•7 million (49•5-51•9) in 2000 to 56•5 million (53•7-59•2) in 2019. Under-5 deaths declined from 9•6 million (9•1-10•3) in 2000 to 5•0 million (4•3-6•0) in 2019. Global population increased by 25•7%, from 6•2 billion (6•0-6•3) in 2000 to 7•7 billion (7•5-8•0) in 2019. In 2019, 34 countries had negative natural rates of increase; in 17 of these, the population declined because immigration was not sufficient to counteract the negative rate of decline.

Materials Letters, 2019

This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.