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Influencer Marketing: Factors Influencing A Customer’s Purchase Intention
Ahnaf Chowdhury NILOY(Ahnaf Chowdhury NILOY ),Jawad Bin ALAM(Jawad Bin ALAM ),Md. Shah ALOM(Md. Shah ALOM ) 한국유통과학회 2023 Asian Journal of Business Environment (AJBE) Vol.13 No.1
Purpose: The study analyzes the impact of attitudes toward food influencers on consumer purchase intention. It also aims to identify factors affecting consumers’ attitudes toward food influencers. Research design, data and methodology: Based on the responses collected from 500 randomly selected consumers, the study analyzes the relationship based on the factors of influencer marketing. The authors test the conceptual model using multivariate linear regression analysis after validating the internal consistency of the data using Cronbach’s Alpha reliability test and exploratory factor analysis (EFA). Results: The study finds that purchase intention is positively correlated and significantly impacted by the attitude towards influencer. The study further finds that attitude towards influencer is positively correlated and significantly impacted by source attractiveness, product match up, and source familiarity. However, source credibility is found to be an insignificant construct impacting attitude towards influencer. Conclusions: The study gives a guided solution to marketers and brand practitioners about the importance of influencer marketing in the food industry and its effectiveness in generating purchase intention. The present paper bridges a gap pertaining to antecedents and factors that impact attitudes toward food influencers and consumer purchase intention. To the authors’ knowledge, this study is the first of its kind to investigate the impact of attitudes toward influencers on purchase intention in the food industry.
Corporate Governance and Bank Performance during COVID-19: Evidence from Bangladesh
Md Masud CHOWDHURY(Md Masud CHOWDHURY ) 한국유통과학회 2023 The Journal of Asian Finance, Economics and Busine Vol.10 No.2
The radical Coronavirus (COVID-19) has swiftly unfolded everywhere globally; it continues to unfold uncontrollably and critically, affecting all economies. The pandemic is not only a health issue but also has distinct effects on the global economy and enterprises. The impact of this novel Coronavirus is also well-documented in the financial sector. This study aims to investigate the impact of COVID-19 on corporate governance and banks’ financial performance. Moreover, this study also examines the impact of corporate governance on banks’ performance in Bangladesh. The study uses return on equity, return on assets, non-performing loans, return on investment, and earnings per share to measure the performance of the banks. And characteristics of corporate governance are measured by board size, number of independent directors on the board, number of female directors on the board, number of board meetings, and number of members in the audit committee. The study uses descriptive statistics, correlation analysis, t-test, and panel regression analysis. The study finds that COVID-19 significantly impacts the banks’ performance and some corporate governance characteristics. The study also reveals that corporate governance significantly impacts the financial performance of commercial banks. The findings of this study suggest that banks should concentrate more on corporate governance.
Phytochemical and biological investigations of Polygonum lanatum
Chowdhury, Sadia A.,Sohrab, Mohammad H.,Haque, Mohammad R.,Hasan, Choudhury M.,Rashid, Mohammad A. Kyung Hee Oriental Medicine Research Center 2008 Oriental pharmacy and experimental medicine Vol.8 No.1
A total of five compounds namely, 2-methylanthracene-9, 10-dione (1), 1-hydroxy-6-methylanthracene-9,10-dione (2), $\beta$-sitosterol (3), stigmasterol (4) and sitosterone (5) were isolated from the stem extracts of Polygonum lanatum for the first time. The structures of the isolated compounds (1-5) were established by extensive spectroscopic studies, including 2D NMR such as $^{1}H-^{1}H$ COSY, HSQC and HMBC studies. The crude extracts and purified compound (1) were screened for antimicrobial activity against a wide range of Gram-positive and Gram-negative bacteria and fungi by the disc diffusion method. The n-hexane and dichloromethane soluble partitionates of the methanolic extract revealed mild to moderate inhibition of growth of the test organisms. The cytotoxic potential of the extractives and compound 1 was also determined by using brine shrimp lethality bioassay, where the extractives demonstrated significant cytotoxic activities.
Supplementation of lycopene in maturation media improves bovine embryo quality in vitro
Chowdhury, M.M.R.,Choi, B.H.,Khan, I.,Lee, K.L.,Mesalam, A.,Song, S.H.,Xu, L.,Joo, M.D.,Afrin, F.,Kong, I.K. Butterworths, etc ; Elsevier Science Ltd 2017 Theriogenology Vol.103 No.-
This study sought to modulate factors that reduce embryo quality in in vitro culture (IVC) systems. Over eight replicates, 3075 oocytes were cultured in in vitro maturation media containing various concentrations of lycopene, followed by in vitro fertilization and culture. The percentages of MII-stage oocytes, the presumptive zygotes that underwent cleavage and developed into blastocysts were significantly (P < 0.05) higher, the intracellular ROS concentrations reduced significantly (P < 0.05) in oocytes/blastocysts, TUNEL assay demonstrates reduced apoptosis and increased total cell number per blastocyst (P < 0.05), Immunocytochemistry confirmed that diminished protein expression of nuclear factor kappa B (NFκB), cyclooxygenase-2 (COX2), and 8-oxoguanine (indicated by ROS) and relative mRNA expression of the Caspase-3, NFκB, COX2, iNOS and BCL2-associated X (BAX) was significantly (P < 0.05) lower whereas the anti-apoptotic gene BCL2 was significantly (P < 0.05) higher in the 0.2 μM lycopene-supplemented group than the control. In conclusion, lycopene improves blastocyst quality by overcoming unfavorable conditions in in vitro culture systems.
An Initial Study for Finite Element Analysis of Residual Stress for Butt Welding Joint
Chowdhury Fatema,Kim Myung Hyun 대한조선학회 2011 대한조선학회 학술대회자료집 Vol.2011 No.11
Welding plays an important role as an efficient joining process in engineering construction field. During welding residual stresses are caused by localized heating followed by rapid cooling in the weld bead and heat affected zone of the base metal. It is of great consideration to estimate the residual stress which is induced in the welded region to predict the behaviors of welded structures for achieving the reliable design and safest design. This paper describes the numerical method, using commercial simulation software Msc Marc 2007, to predict residual stresses in butt welded structure containing multi pass welds for mild steel. Coupled thermo-mechanical analysis has been carried out to evaluate the magnitude and distribution of residual stresses induced at two similar plates of full penetration weld. Multi-pass weld has been simulated, with thermal loading applied to the model on a pass by pass basis for plane strain solid element. The results of this finite element analysis are compared with the obtained value of experimental residual stress data to confirm the accuracy of the method.
Chowdhury, S.,Bolan, N. S.,Seshadri, B.,Kunhikrishnan, A.,Wijesekara, H.,Xu, Y.,Yang, J.,Kim, G. H.,Sparks, D.,Rumpel, C. ECOMED PUBLISHERS 2016 Environmental Science and Pollution Research Vol.23 No.8
<P>Co-composting biowastes such as manures and biosolids can be used to stabilize carbon (C) without impacting the quality of these biowastes. This study investigated the effect of co-composting biowastes with alkaline materials on C stabilization and monitored the fertilization and revegetation values of these co-composts. The stabilization of C in biowastes (poultry manure and biosolids) was examined by their composting in the presence of various alkaline amendments (lime, fluidized bed boiler ash, flue gas desulphurization gypsum, and red mud) for 6 months in a controlled environment. The effects of co-composting on the biowastes' properties were assessed for different physical C fractions, microbial biomass C, priming effect, potentially mineralizable nitrogen, bioavailable phosphorus, and revegetation of an urban landfill soil. Co-composting biowastes with alkaline materials increased C stabilization, attributed to interaction with alkaline materials, thereby protecting it from microbial decomposition. The co-composted biowastes also increased the fertility of the landfill soil, thereby enhancing its revegetation potential. Stabilization of biowastes using alkaline materials through co-composting maintains their fertilization value in terms of improving plant growth. The co-composted biowastes also contribute to long-term soil C sequestration and reduction of bioavailability of heavy metals.</P>
Chowdhury, Mohammed Y.E.,Kim, Tae-Hwan,Uddin, Md Bashir,Kim, Jae-Hoon,Hewawaduge, C.Y.,Ferdowshi, Zannatul,Sung, Moon-Hee,Kim, Chul-Joong,Lee, Jong-Soo Elsevier 2017 Veterinary microbiology Vol.201 No.-
<P><B>Abstract</B></P> <P>To develop a safe and effective mucosal vaccine that broad cross protection against seasonal or emerging influenza A viruses, we generated a mucosal influenza vaccine system combining the highly conserved matrix protein-2 (sM2), fusion peptide of hemagglutinin (HA<SUB>2</SUB>), the well-known mucosal adjuvant cholera toxin subunit A1 (CTA1) and poly-γ-glutamic acid (γ-PGA)-chitosan nanoparticles (PC NPs), which are safe, natural materials that are able to target the mucosal membrane as a mucosal adjuvant. The mucosal administration of sM2HA2CTA1/PC NPs could induce a high degree of systemic immunity (IgG and IgA) at the site of inoculation as well as at remote locations and also significantly increase the levels of sM2- or HA2-specific cell-mediated immune response. In challenge tests in BALB/c mice with 10 MLD<SUB>50</SUB> of A/EM/Korea/W149/06(H5N1), A/Puerto Rico/8/34(H1N1), A/Aquatic bird/Korea/W81/2005(H5N2), A/Aquatic bird/Korea/W44/2005 (H7N3) or A/Chicken/Korea/116/2004(H9N2) viruses, the recombinant sM2HA2CTA1/PC NPs provided cross protection against divergent lethal influenza subtypes and also the protection was maintained up to six months after vaccination. Thus, sM2HA2CTA1/PC NPs could be a promising strategy for a universal influenza vaccine.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Construction of poly-γ-glutamic acid (γ-PGA)-chitosan nanoparticles (PC NPs) containing conserved antigens of Influenza virus and mucosal adjuvant cholera toxin subunit A1 (CTA1) as a safe and effective mucosal vaccine against emerging influenza A viruses. </LI> <LI> The mucosal administration of sM2HA2CTA1/PC NPs could induce a high degree of systemic, mucosal and cell-mediated immune response. </LI> <LI> Induced immune responses could protect mice against 10MLD<SUB>50</SUB> of divergent influenza subtypes. </LI> <LI> The immune response and efficacy of protection was maintained up to six months after final inoculation. </LI> </UL> </P>
Identification of eighteen flutter derivatives of an airfoil and a bridge deck
Chowdhury, Arindam Gan,Sarkar, Partha P. Techno-Press 2004 Wind and Structures, An International Journal (WAS Vol.7 No.3
Wind tunnel experiments are often performed for the identification of aeroelastic parameters known as flutter derivatives that are necessary for the prediction of flutter instability for flexible structures. Experimental determination of all the eighteen flutter derivatives for a section model facilitates complete understanding of the physical mechanism of flutter. However, work in the field of identifying all the eighteen flutter derivatives using section models with all three degree-of-freedom (DOF) has been limited. In the current paper, all eighteen flutter derivatives for a streamlined bridge deck and an airfoil section model were identified by using a new system identification technique, namely, Iterative Least Squares (ILS) approach. Flutter derivatives of the current bridge and the Tsurumi bridge are compared. Flutter derivatives related to the lateral DOF have been emphasized. Pseudo-steady theory for predicting some of the flutter derivatives is verified by comparing with experimental data. The three-DOF suspension system and the electromagnetic system for providing the initial conditions for free-vibration of the section model are also discussed.