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Application of a distributed verification in Islamic microfinance institutions:a sustainable model

Financial Innovation 2022年第1期8卷 2196-2207页

作者： Peter Wanke M.kabir Hassan md.Abul Kalam Azad md.Azizur Rahman Naznin Akther COPPEAD Graduate Business School Federal University of Rio de JaneiroRua Paschoal Lemme355Rio de Janeiro 21949-900Brazil Department of Economics and Finance University of New OrleansNew OrleansLA 70148USA Department of Business and Technology Management Islamic University of TechnologyGazipur 1704Bangladesh Department of Business Administration Faculty of Business&EntrepreneurshipDaffodil International UniversityDhakaBangladesh

The literature gap in microfinance paradox of double bottom line(financial performance ***)has always been an interesting area of *** paper proposes a theoretical model most suitable for Islamic Microfinance Institutions(MFIs)which enables Islamic MFIs’to operate together with the existing financial models compliant with Islamic Shariah *** model is based on a distributed verification/decision-making process that might be realized(but not necessary)through *** the available distributed verification techniques,blockchain technology is an attractive emerging computing paradigm due to its decentralized,immutable,shared,and secure data structure *** model proposes three significant ***,sharing information through blockchain will allow a transparent network in MFI operations,which will raise confidence for donors resulting in a causal effect of a relatively lower profit rate to be charged by the ***,the consensus mechanism will enable risk-sharing,a character of Islamic finance;thus,the MFIs will operate without any collateral for low-risk ***,the double bottom line of MFIs’long-lasting paradox would be *** for practical implication of this proposed model,the causal impact of lower cost investment by the lenders would increase social welfare because of no collateral and no initial wealth *** proposed model proposes a credit rationing approach where profit can be *** collateral will be used when calculating the creditworthiness of a borrower.

关键词： Blockchain Islamic microfinance Double bottom line Distributed verification

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Molecular methods for detection of pathogenic viruses of respiratory tract——A review

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Asian Pacific Journal of Tropical Biomedicine 2018年第5期8卷 237-244页

作者： md.Shahidul kabir Department of Microbiology Institutional Quality Assurance Cell Stamford University

Human respiratory system is harbored by a vast array of transient and normal microbial flora.A number of pathogenic viruses were diagnosed from samples in different occasions from mild to severe infections of respiratory *** methods were developed for detection of these viruses during last two *** acid amplification methods were introduced for rapid and accurate diagnosis of pathogenic *** detection systems were employed to identify a panel of pathogenic viruses,which requires specialized kits and instruments in some *** review summarizes different types of molecular approaches which were developed with time and applied for the detection of pathogenic viruses associated with infections of the respiratory system.

关键词： Respiratory system Virus Molecular method Detection

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Effects of Thermophoresis on Unsteady MHD Free Convective Heat and Mass Transfer along an Inclined Porous Plate with Heat Generation in Presence of Magnetic Field

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Open Journal of Fluid Dynamics 2012年第4期2卷 120-129页

作者： md alamgir kabir md Abdullah Al Mahbub Department of Mathematics Comilla University Comilla Bangladesh Department of Natural Sciences Daffodil International University Dhaka Bangladesh

An analysis of Thermophoresis effect on unsteady magneto-hydrodynamic free convection flow over an inclined porous plate with time dependent suction in presence of magnetic field with heat generation has been considered by employing Nachtsheim-Swigert shooting iteration technique along with sixth order Runge-Kutta integration scheme. Resulting non-dimensional velocity, temperature and concentration profiles are then presented graphically for different values of the parameters entering into the problem. Finally, the effects of the pertinent parameters on the skin-friction coefficient, the rate of heat transfer (Nusselt number) and wall deposition flux (Stanton number), which are of physical interest, are exhibited in tabular form.

关键词： Heat Generation Magnetic Field Nusselt Number Stanton Number Thermophoresis

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An Unsupervised Writer Identification Based on Generating Clusterable Embeddings

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Computer Systems Science & Engineering 2023年第8期46卷 2059-2073页

作者： M.F.Mridha Zabir Mohammad Muhammad Mohsin kabir Aklima Akter Lima Sujoy Chandra Das md Rashedul Islam Yutaka Watanobe Department of Computer Science and Engineering American International University BangladeshDhaka1229Bangladesh Department of Computer Science&Engineering Bangladesh University of Business&TechnologyDhaka1216Bangladesh Department of Computer Science and Engineering University of Asia PacificDhaka1216Bangladesh Department of Computer Science and Engineering University of AizuAizu-Wakamatsu965-8580Japan

The writer identification system identifies individuals based on their handwriting is a frequent topic in biometric authentication and verification *** to its importance,numerous studies have been conducted in various *** have established several learning methods for writer identification including supervised and unsupervised ***,supervised methods require a large amount of annotation data,which is impossible in most *** the other hand,unsupervised writer identification methods may be limited and dependent on feature extraction that cannot provide the proper objectives to the architecture and be *** paper introduces an unsupervised writer identification system that analyzes the data and recognizes the writer based on the inter-feature relations of the data to resolve the uncertainty of the features.A pairwise architecturebased Autoembedder was applied to generate clusterable embeddings for handwritten text ***,the trained baseline architecture generates the embedding of the data image,and the K-means algorithm is used to distinguish the embedding of individual *** proposed model utilized the IAM dataset for the experiment as it is inconsistent with contributions from the authors but is easily accessible for writer identification *** addition,traditional evaluation metrics are used in the proposed ***,the proposed model is compared with a few unsupervised models,and it outperformed the state-of-the-art deep convolutional architectures in recognizing writers based on unlabeled data.

关键词： Writer identification pairwise architecture clusterable embeddings convolutional neural network

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Influence of Electrolytes on the Micellar Growth of Amphiphilic Drug Chlorpromazine Hydrochloride

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物理化学学报 2008年第3期24卷 411-415页

作者： ALAM md. Sayem kabir-UD-DIN Department of Chemistry Aligarh Muslim University Aligarh-202002 UP India

The effect of electrolytes on the micellar behavior of an amphiphilic drug, chlorpromazine (CPZ) hydrochloride, was studied using cloud point (CP) and dye solubilization techniques. In the presence of KBr, increase in pH led to decrease in the CP of 50 mmol·L-1 drug solution (prepared in 10 mmol·L-1 sodium phosphate (SP) buffer) because of deprotonation of drug molecules at high pH. The visible absorbance increased (due to dye solubilization) with the increase in pH from 6.5 to 6.9, which indicated micellar growth. At fixed pH (6.7), addition of inorganic salts (KF, KCl, and KBr) to drug solutions (50 mmol·L-1) caused an increase in the CP as well as in the visible absorbance, with effectiveness being in the order: F-Na+ >K+, which was explained by considering cognizance of their hydrated radii. Compared with anions, their effect was small. Increase in [CPZ] caused micellar growth and hence the CP as well as the visible absorbance increased. The overall behavior was discussed in terms of electrostatic interactions and micellar growth.

关键词：电解质胶束生长两性分子药物氯丙嗪氯化氢浊点染色增溶作用

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Anisotropic leaky-like perturbation with subwavelength gratings enables zero crosstalk

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Light(Science & Applications) 2023年第6期12卷 1153-1161页

作者： md Faiyaz kabir md Borhan Mia Ishtiaque Ahmed Nafiz Jaidye Syed Z.Ahmed Sangsik Kim Department of Electrical and Computer Engineering Texas Tech UniversityLubbockTX 79409USA Department of Physics and Astronomy Texas Tech UniversityLubbockTX 79409USA School of Electrical Engineering Korea Advanced Institute of Science and TechnologyDaejeon 34141South Korea

Electromagnetic coupling via an evanescent field or radiative wave is a primary characteristic of light,allowing optical signal/power transfer in a photonic circuit but limiting integration density.A leaky mode,which combines both evanescent field and radiative wave,causes stronger coupling and is thus considered not ideal for dense *** we show that a leaky oscillation with anisotropic perturbation rather can achieve completely zero crosstalk realized by subwavelength grating(SWG)*** oscillating fields in the SWGs enable coupling coefficients in each direction to counteract each other,resulting in completely zero *** experimentally demonstrate such an extraordinarily low coupling between closely spaced identical leaky SWG waveguides,suppressing the crosstalk by≈40 dB compared to conventional strip waveguides,corresponding to≈100 times longer coupling *** leaky-SWG suppresses the crosstalk of transverse–magnetic(TM)mode,which is challenging due to its low confinement,and marks a novel approach in electromagnetic coupling applicable to other spectral regimes and generic devices.

关键词： crosstalk coupling enable

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Genetic sources and loci for wheat head blast resistance identified by genome-wide association analysis

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The Crop Journal 2022年第3期10卷 793-801页

作者： Lei Wu Xinyao He Muhammad Rezaul kabir Krishna KRoy md.Babul Anwar Felix Marza Yi He Peng Jiang Xu Zhang Pawan K.Singh CIMMYT-JAAS Joint Center for Wheat Diseases Jiangsu Academy of Agricultural SciencesNanjing 210014JiangsuChina International Maize and Wheat Improvement Center(CIMMYT) ApdoPostal 6-64106600 Mexico D.F.Mexico Bangladesh Wheat and Maize Research Institute(BWMRI) NashipurDinajpur 5200Bangladesh Instituto Nacional de Innovación Agropecuaria y Forestal(INIAF) La PazBolivia

The emergence and spread of wheat blast caused by fungal pathogen Magnaporthe oryzae pathotype Triticum is a threat to global wheat *** resistance level and genetic loci for blast resistance in Chinese germplasm remain unknown.A panel of 266 bread wheat accessions from China,CIMMYTMexico and other countries was screened for head blast resistance under 12 field experiments in Bolivia and ***,a genome-wide association study was performed to understand the genetic basis of wheat blast *** average blast index of all the accessions was 53.7%±12.7%,and 10 accessions including Chinese accessions Yumai 10 and Yu 02321 showed moderate to high levels of blast resistance,accounting for only 3.8%in the ***-eight significant SNPs clustered in a 28.9 Mb interval on the 2 AS/2 NS translocation region,explaining phenotypic variation between10.0%and 35.0%.The frequency of the 2 AS/2 NS translocation in the Chinese accessions was as low as4.5%.These results indicated that the 2 NS fragment was the only major locus conferring resistance to wheat blast in this panel,and the resistant and moderately resistant lines identified could be deployed in breeding.

关键词： Magnaporthe oryzae pathotype Triticum Host resistance Wheat blast GWAS

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Design of a High-Gain 2 × 1 Array Antenna for S-Band Applications

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World Journal of Engineering and Technology 2023年第2期11卷 293-302页

作者： md. Imran Hossain md. Ariful Islam md. Tofail Ahmed md. Humaun kabir Department of Electrical Electronic and Communication Engineering Pabna University of Science and Technology Pabna Bangladesh Department of Electrical and Electronic Engineering Pabna University of Science and Technology Pabna Bangladesh Department of Information and Communication Engineering Pabna University of Science and Technology Pabna Bangla-desh Department of Computer Science and Engineering Bangamata Sheikh Fojilatunnesa Mujib Science & Technology University Jamalpur Bangladesh

Antennas are an indispensable element in wireless networks. For long-distance wireless communication, antenna gains need to be very strong (highly directive) because the signal from the antenna loses a lot of strength as it travels over long distances. This is true in the military with missile, radar, and satellite systems, etc. Antenna arrays are commonly employed to focus electromagnetic waves in a certain direction that cannot be achieved perfectly with a single-element antenna. The goal of this study is to design a rectangular microstrip high-gain 2 × 1 array antenna using ADS Momentum. This microstrip patch array design makes use of the RT-DUROID 5880 as a substrate with a dielectric constant of 2.2, substrate height of 1.588 mm, and tangent loss of 0.001. To achieve efficient gain and return loss characteristics for the proposed array antenna, RT-Duroid is a good choice of dielectric material. The designed array antenna is made up of two rectangular patches, which have a resonance frequency of 3.3 GHz. These rectangular patches are excited by microstrip feed lines with 13 mm lengths and 4.8 mm widths. The impedance of the patches is perfectly matched by these transmission lines, which helps to get better antenna characteristics. At a resonance frequency of 3.3 GHz, the suggested antenna array has a directivity of 10.50 dB and a maximum gain of 9.90 dB in the S-band. The S parameters, 3D radiation pattern, directivity, gain, and efficiency of the constructed array antenna are all available in ADS Momentum.

关键词： Microstrip Patch Antenna Array Antenna Microstrip Feed Rectangular Patch Gain Efficiency Directivity ADS

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Finite Element Analysis of Magnetohydrodynamic Natural Convection within Semi-Circular Top Enclosure with Triangular Obstacles

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American Journal of Computational Mathematics 2022年第1期12卷 33-43页

作者： Arju Ara Runa md. Abdul Alim md. Shahidul Alam Kazi Humayun kabir Department of Mathematics Bangladesh University of Engineering and Technology (BUET) Dhaka Bangladesh Department of Mathematics Mohammadpur Kendriya College Mohammadpur Dhaka Bangladesh

The phenomena of magneto-hydrodynamic natural convection in a two-dimensional semicircular top enclosure with triangular obstacle in the rectangular cavity were studied numerically. The governing differential equations are solved by using the most important method which is finite element method (weighted-residual method). The top wall is placed at cold Tc and bottom wall is heated Th. Here the sidewalls of the cavity assumed adiabatic. Also all the wall are occupied to be no-slip condition. A heated triangular obstacle is located at the center of the cavity. The study accomplished for Prandtl number Pr = 0.71;the Rayleigh number Ra = 103, 105, 5 × 105, 106 and for Hartmann number Ha = 0, 20, 50, 100. The results represent the streamlines, isotherms, velocity and temperature fields as well as local Nusselt number.

关键词： Natural Convection Finite Element Method Hartmann Number Rayleigh Number Triangular Obstacle Numerical Solution

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Blockchain-Based Certificate Authentication System with Enabling Correction

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Journal of Computer and Communications 2023年第3期11卷 73-82页

作者： md. Mijanur Rahman md. Tanzinul kabir Tonmoy Saifur Rahman Shihab Riya Farhana Department of Computer Science and Engineering Southeast University Dhaka Bangladesh

Blockchain has proven to be an emerging technology in the digital world, changing the way everyone thinks about data security and bringing efficiency to several industries. It has already been applied to a wide range of applications, from financial services and supply chain management to voting systems and identity verification. An organization must verify its candidates before selecting them. Choosing an unqualified candidate can ruin an organization’s reputation. In this paper, a blockchain-based academic certificate authentication system will be used to ensure authenticity and make the assertion of the decentralized system secure. However, the system will generate, authenticate and make corrections on academic certificates. Ultimately, some blockchain-based authentication systems already exist, they can’t correct any errors that occur during generation. A blockchain-based certificate authentication system was built using blockchain technology. Where admin could generate, authenticate and correct the certificate if necessary. The admin can also check how many times a certificate has been modified. Other users can only check the authenticity of the certificates. We’re using two blockchains to enable corrections. Blockchain technology can successfully implement a certificate authentication system. This system will eliminate doubts about the authenticity of certificates, provide fast responses, and ensure reliable and secure storage. The proposed system will help in many ways, such as providing a user-friendly university admission, and smooth job hiring process, etc. In conclusion, our proposed system can permanently eradicate certificate forgeries and create and promote trust in society.

关键词： Blockchain Certificate Authentication Certificate Correction Secure Certification Eliminate Forging

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