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Image-Based Vehicle Speed Estimation

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Journal of Computer and Communications 2019年第6期7卷 1-5页

作者： md. golam moazzam Mohammad Reduanul Haque Mohammad Shorif Uddin Department of Computer Science and Engineering Jahangirnagar University Dhaka Bangladesh Department of Computer Science and Engineering Daffodil International University Dhaka Bangladesh

Vehicle speed is an important parameter that finds tremendous application in traffic control identifying over speed vehicles with a view to reducing accidents. Many methods, such as using RADAR and LIDAR sensors have been proposed. However, these are expensive, and their accuracy is not quite satisfactory. In this paper, a video-based vehicle speed determination method is presented. The method shows satisfactory performance on standard data sets and gives that error rate of velocity estimation is within 10%.

关键词： Vehicle Detection Speed Calculation Background Subtraction Vehicle Tracking

Growth performance of Avicennia officinalis L. and the effect of spacing on growth and yield of trees planted in the Western coastal belt of Bangladesh

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Journal of Forestry Research 2014年第4期25卷 835-838页

作者： md. Abdul Quddus Miah Sk. Ahiul Islam md. Ahsan Habib md. golam Moula Plantation Trial Unit Division Bangladesh Forest Research Institute Rupatoli Barisal-8206 Bangladesh

A trial ofAvicennia officinalis L. with five different spacings was conducted in the newly accreted lands along the western coastline （Patuakhali district） of Bangladesh since 1993 to assess growth perform- ance and the effect of spacing on tree growth. Data on tree density, height, diameter, bole height, crown diameter were recorded and ana- lyzed when the stand was 19 years old. Mean height ranged from 12.89-13.52 m and diameter at breast height （dbh） from 26.57-32.16 cm in plots of different spacings. The mean annual height increment ranged from 0,67-0.71 m, mean annual diameter increment from 1.40-1.69 cm and wood volume from 6.02-10.04 ***＇*** in different treatments. Significantly greater diameter （32.16 cm） and wood volume （10.04 ***.a-1） were obtained with wider （2.13 m × 2.13 m） spacing than with closer spacings. But tree growth was unaffected by other spacings. Growth data were also recorded from other .4. officinalis plantations raised by Forest Department （FD） on different islands in Patuakhali and Bhola districts of Bangladesh. At these sites, mean annual height incre- ment ranged from 0.33-0.62 m, mean annual diameter increment from 0.72-1,37 cm and wood volume from 1.55-5.73 m3·ha-1·a·-1. The growth performance of A. offindicated that the newly aecreted lands along the western shoreline may be suitable for raising Avicennia planta- tions for the enrichment of coastal vegetation.

关键词： growth Avicennia officinalis plantation spacing coastal belt

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Benzene Shape Photonic Crystal Fiber Based Plasma Sensor： Design and Analysis

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Photonic Sensors 2018年第3期8卷 263-269页

作者： md. Toriqul ISLAM md. golam MOCTADER Kawsar AHMED Sawrab CHOWDHURY Department of Physics Mawlana Bhashani Science and Technology University Santosh Tangail-1902 Bangladesh Group of Bio-photomatix Tangail-1902 Bangladesh Department of Information and Communication Technology Mawlana Bhashani Science and Technology UniversitySantosh Tangail-1902 Bangladesh

A novel benzene core photonic crystal fiber （BC-PCF） is proposed for plasma sensing applications. The proposed BC-PCF parameters have been tuned to gain high sensitivity, high numerical aperture （NA）, and low confinement loss, and modality over the extensive variety of 0.7 μm to 1.9μm wavelength. The explored results for the ideal structure have exhibited the high sensitivity up to 77.84% and negligible confinement loss of 7.9×10^-3dB/m at 1.3μm wavelength. The V-barometer remains under 2.405 over the whole working wavelength. So the proposed BC-PCF is a single mode fiber, which advances the long partition correspondence applications. Furthermore, high numerical aperture （NA） makes the fiber potential candidate in medical imaging applications. The plan of the sensor is to find out the creative potential outcomes in sensing applications.

关键词： Optical sensor relative sensitivity numerical aperture confinement loss benzene core photonic crystal fiber (BC-PCF)

Variability in total antioxidant capacity, antioxidant leaf pigments and foliage yield of vegetable amaranth

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Journal of Integrative Agriculture 2018年第5期17卷 1145-1153页

作者： Umakanta Sarker md.Tofazzal Islam md.golam Rabbani Shinya Oba Department of Genetics and Plant Breeding Faculty of AgricultureBangabandhu Sheikh Mujibur Rahman Agricultural University Laboratory of Field Science Faculty of Applied Biological ScienceGifu University Department of Biotechnology Faculty of AgricultureBangabandhu Sheikh Mujibur Rahman Agricultural University Department of Horticulture Faculty of AgricultureBangladesh Agricultural University

Twenty vegetable amaranth genotypes were evaluated for total antioxidant capacity, antioxidant leaf pigments, vitamins, and selection of suitable genotypes for extraction of juice in a randomized complete block design（RCBD） with three replications. Vegetable amaranth was rich in chlorophyll, β-cyanins, β-xanthins, betalains, carotene, ascorbic acid and total antioxidant. The genotypes VA14, VA16, VA18, VA15, and VA20 could be selected as amaranth vegtable varieties with high yields and abundance antioxidant leaf pigments and vitamins to produce juice. The genotypes VA13 and VA19 had above-average foliage yield and high antioxidant profiles while the genotypes VA2, VA3, VA9, VA11, VA12, and VA17 had a high antioxidant profiles and below-average foliage yield. These genotypes could be used as a donor parent for integration of potential high antioxidant profiles genes into other genotypes. The correlation study revealed a strong positive association among all the antioxidant leaf pigments, total antioxidant capacity and foliage yield. Selection based on total antioxidant capacity, antioxidant leaf pigments could economically viable to improve the yield potential of vegetable amaranth genotypes. Total carotene and ascorbic acid exhibited insignificant genotypic correlation with all the traits except total antioxidant capacity. This indicates that selection for antioxidant vitamins might be possible without compromising yield loss.

关键词： ascorbic acid betalain carotene chlorophyll β-cyanins β-xanthins total antioxidant capacity foliage yield correlation

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Soul-Searching on Performance of TV and Public Service Information Broadcast in Bangladesh

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Journalism and Mass Communication 2012年第6期2卷 684-690页

作者： md. golam Rahman University of Dhaka Dhaka Bangladesh

In Bangladesh, more than a dozen of private TV channels are operating and about 10 new channels are waiting with green signal for transmission. Bangladesh Television （BTV）, the only government owned and administered, and known as structurally a biased institution serves the audience the public service information most. At the same time it serves purposes of incumbent government. Public information （PI） broadcast means broadcasting towards public welfare which may bring about change in the betterment of life and work of people. Its main focus would be on information, education, and motivation values rather than entertainment. In case of information, dissemination, and documentation, all private TV channels in Bangladesh serve more entertainment and less public service information, whereas, BTV＇s focus is evident on more PI. The owners and operators of private channels think first of their business profit as well as pressure from government and political parties. During formulating planning and strategies or building program content, they become cautious as they fear that the government become angry and shut down the channel.

关键词： public information (PI) private channel TV contents

Features Desired in Public Transport in a Developing City: Users’ Perspective

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Journal of Transportation Technologies 2023年第4期13卷 632-643页

作者： md. Nafis Imtiyaz md. golam Sobhani Mostafiz Emtiaz Arcadis US Inc. Houston USA Ardaman and Associates Inc. St. Rose USA RRP Consulting Engineers LLC Houston USA

Excessive growth of population and urbanization in the developing countries set an increasing demand of mobility services. To meet this demand, public transport plays a significant role by providing an easy and affordable mobility service. Public transport service is a process evolving over time nevertheless is not always directly responsive to the changing demand of the passengers. Recently in developing countries, the unpleasant experience in public transport services is seen as one of the main reasons behind increased passenger car share, which eventually lead to traffic congestion. However, the situation can be ameliorated if the features of the public transport are improved by addressing the users’ demand. In this study, the primary features desired and demanded by the passengers of a developing country are identified by three phase survey. These identified features are also categorized based on public responses. And finally, the required features in an appropriate public transport mode are prioritized by using a common Multi Criteria Decision Making approach (AHP—Analytic Hierarchy Process). The study suggests that residents of the developing city are not that much concern on the outlook and ambience of the service rather they are concerned about finishing their trips safely in time at an affordable rate. The findings of this research will help planners and decision makers to make the best use of the investment in public transport services and infrastructure to promote these modes over privately owned vehicle.

关键词： Public Transport Feature Analytical Hierarchy Process (AHP) Questionnaire Respondents Weightage

Applying organic amendment enriches nutrient status of municipal solid waste compost and its application enhances tuber yield and nutrient concentrations of potato

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Waste Disposal and Sustainable Energy 2023年第4期5卷 439-450页

作者： Marufa Sultana M.Jahiruddin Mohammad golam Kibria md.Hosenuzzaman md.Anwarul Abedin Department of Soil Science Faculty of AgricultureBangladesh Agricultural UniversityMymensingh2202Bangladesh Bangladesh Agricultural Research Institute JoydebpurBangladesh

Elevated price of chemical fertilizers and poor nutrient content in conventional organic sources such as municipal solid waste(MSW)compost necessitate the production of nutrient enriched compost which could serve as a potential alternative organic fertilizer *** studied three types of amended compost that were prepared by mixing 20%mustard oil cake(MOC)and 30%poultry manure(PM)or cow dung or sugarcane press mud(SPM)with 50%MSW *** viride was inoculated into every type of *** rate of amended or unamended MSW compost application was 10 t ha^(−1).The use of different amendments improved the nutrient level of MSW compost,of which the N increment was remarkable,ranging from 1.14%N(unamended compost)to 2.9%–3.22%N depending on the types of amendment.A field experiment was conducted to evaluate performances of the amended MSW composts on the yield and nutrient content of potato(variety BARI Alu25).All compost treatments except the sole MSW compost treatment produced significantly higher tuber yields than the sole fertilizer *** press mud based MSW compost+fertilizer treatment produced the highest tuber yield of 31.6 t ha^(−1)(65%increase over 100%fertilizers and 57%increase over 100%compost treatment).The tuber N concentration varied from 0.128%to 0.594%,P from 0.018%to 0.035%,K from 0.213%to 0.313%and S from 0.020%to 0.053%,with the highest result recorded with press mud+fertilizer *** use of amended composts had residual effects on soil N,P,K and S ***,the treatment containing 50%fertilizer+50%compost mixture(MSW:MOC:SPM in a ratio of 5:2:3)performed the best followed by PM amended *** is concluded that integrated use of 10 t ha^(−1) organic amended MSW compost with chemical fertilizers can ensure higher crop yield,nutrient content and sustained soil fertility in nutrient-deficient sub-tropical soil.

关键词： Mustard oil cake MSW compost Potato Poultry manure Sugarcane press mud

Antioxidant Defense Mechanisms of Salinity Tolerance in Rice Genotypes

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Rice science 2017年第3期24卷 155-162页

作者： Mohammad golam KIBRIA Mahmud HOSSAIN Yoshiyuki MURATA md.Anamul HOQUE Department of Soil Science Bangladesh Agricultural University Graduate School of Natural Science and Technology Okayama University

In order to elucidate the role of antioxidant responses in salinity tolerance in rice genotypes under salt stress, experiments were conducted using four rice varieties, including salt-sensitive BRRI dhan 28 and three salt-tolerant varieties BRRI dhan 47, BINA dhan 8 and BINA dhan 10. Thirty-day-old rice seedlings were transplanted into pots. At the active tillering stage(35 d after transplanting), plants were exposed to different salinity levels(0, 20, 40 and 60 mmol/L NaCl). Salt stress caused a significant reduction in growth for all the rice genotypes. Growth reduction was higher in the salt-sensitive genotype than in the salt-tolerant ones, and BINA dhan 10 showed higher salt tolerance in all measured physiological parameters. The reduction in shoot and root biomass was found to be minimal in BINA dhan 10. Chlorophyll content significantly decreased under salt stress except for BINA dhan 10. Proline content significantly increased in salt-tolerant rice genotypes with increased salt concentration, and the highest proline content was obtained from BINA dhan 10 under salt stress. Catalase and ascorbate peroxidase activities significantly decreased in salt-sensitive genotype whereas significantly increased in salt-tolerant ones with increasing salt concentration. However, salt stress significantly decreased guaiacol peroxidase activity in all the rice genotypes irrespective of salt tolerance. K^+/Na^+ ratio also significantly decreased in shoots and roots of all the rice genotypes. The salt-tolerant genotype BINA dhan 10 maintained higher levels of chlorophyll and proline contents as well as catalase and ascorbate peroxidase activities under salt stress, thus, this might be the underlying mechanism for salt tolerance.

关键词： antioxidant enzyme salinity chlorophyll content proline content K+/Na+ ratio rice

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Hydrodynamics and suspended sediment transport at tidal inlets of Salut Mengkabong Lagoon, Sabah, Malaysia

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International Journal of Sediment Research 2010年第4期25卷 399-410页

作者： md.Azharul HOQUE Bobita golam AHAD Ejria SALEH University Malaysia Sabah Kota Kinabalu 88999 SabahMalaysia

Salut-Mengabong Lagoon is located at the west coast of Sabah facing the South China Sea. At the bay side of the main inlet the lagoon splits into Salut and Mengabong Channels. Sediment dynamics at the inlets of the lagoon have recently received considerable attention. But any direct measurement of hydrodynamics and sediment flux are yet to be well documented. This study covers the field measurements of current velocity, water flux, suspended sediment concentration and sediment flux across the three transects (main inlet, Salut entrance and Mengkabong entrance) during typical spring and neap tidal cycles in southwest monsoon and northeast monsoon. Temporal variations and timeaveraged values of measured parameters are discussed. The inlets of Salut-Mengkabong Lagoon are found to be ebb-dominated. The time-averaged velocities during spring tidal measurements are found to be higher in the main inlet followed by Mengkabong entrance and Salut entrance. Suspended sediment concentration and sediment fluxes are substantially higher in spring tidal cycles compared to the same in neap tidal cycles. During spring tidal cycles, ebb tidal sediment fluxes are higher than the flood tidal fluxes. The ebb dominated flux across the main inlet led to the large ebb shoal.

关键词： Hydrodynamics Suspended sediment Lagoon Tidal inlet Salut Mengkabong