The Relationship between Other Customer Perception and Experience with Role of Interpersonal Mindfulness in Brand Distribution

Linh Thi Dieu NGUYEN(Linh Thi Dieu NGUYEN ),Anh Thuy TRINH(Anh Thuy TRINH ) 한국유통과학회 2023 유통과학연구 Vol.21 No.6

The Relationship Between Brand Anthropomorphism, Brand Love, and Brand Advocacy. Moderate Role of Self-brand Connection in Brand Distribution

Ngoc Dan Thanh NGUYEN(Ngoc Dan Thanh NGUYEN ),Thuy Anh TRINH(Thuy Anh TRINH ) 한국유통과학회 2023 유통과학연구 Vol.21 No.3

Purpose: The article focuses on studying the impact of brand anthropomorphism, and brand love, on brand advocacy, and at the same time the moderate role of brand self-connection in the process of customers’ perception of the brand, especially the brand distribution. The survey subjects are customers with millennial consumers in Ho Chi Minh City, who have the behavior of buying brands in the smart mobile device industry many times with a specific brand in terms of brand distribution. Results: The findings show that Brand anthropomorphism and brand love are crucial factors to impact brand advocacy and the role of self-brand connection also is a confirmed positive effect on the relationship between brand anthropomorphism and brand love. Research design, data, and methodology: The article uses quantitative research to test the model and research hypotheses. The way to collect quantitative data is to use questionnaires with 1531 samples in Ho Chi Minh City, Vietnam. Conclusion: The research results can help businesses build a long-term brand strategy and expect to get new rewards and value from customers. They can also add to the theory about the relationship between brands and customers.

Incorporation of Montmorillonite/Silica Composite for the Corrosion Protection of an Epoxy Coating on a 2024 Aluminum Alloy Substrate

Trinh Anh Truc,Thai Thu Thuy,Pham Gia Vu 한국부식방식학회 2023 Corrosion Science and Technology Vol.22 No.2

Layered silicate clay montmorillonite (MMT) has been used in nanocomposite coating to improve corrosionprotection by reinforcing the barrier property. The better dispersion of MMT in the coating produces ahigher barrier effect. Pretreatment with MMT could favor the delamination of clay platelets, facilitatingMMT dispersion in the coating. In the present work, a montmorillonite/silica (MMT/Si) composite wasprepared by the in situ sol-gel method. x-ray diffraction measurements and field-emission scanning electronmicroscopy observations showed silica crystal formation and increased basal spacing between theMMT platelets. Composite MMT/Si particles were introduced in an epoxy resin to reinforce the corrosionprotection of the coating applied on the AA2024 surface. Electrochemical impedance spectroscopy (EIS)was performed to characterize the protective property of the coating. The results demonstrated the highbarrier effect of the coating containing 5 wt% of MMT/Si. Adhesion evaluation after a salt spray testexhibited a high adherence to the epoxy coating containing MMT/Si.

Effect of the Morphological Characteristic and Composition of Electrospun Polyvinylidene Fluoride/Graphene Oxide Membrane on Its Pb2+ Adsorption Capacity

Thuy Thi Thu Nguyen,Huu The Nguyen,Hai Thi Trinh,Trang Thi Thu Bui,Anh-Tuan Le,Tran Quang Huy 한국고분자학회 2022 Macromolecular Research Vol.30 No.2

In this study, the Pb2+ adsorption capacity of electrospun polyvinylidene fluoride/graphene oxide (PVDF/GO) membranes with different morphological characteristics and compositions were comprehensively compared. Firstly, the chemical characteristics, morphological characteristics and hydrophobicity relating to the adsorption capacity of electrospun PVDF/GO membranes were investigated through Fourier transform infrared spectroscopy, Raman spectroscopy, energy-dispersive X-ray spectroscopy, scanning electron microscopy and water contact angle measurement. Adsorption analysis showed that the adsorption performance of electrospun PVDF/ GO increased as GO contents increased. Variations in the average diameter of electrospun PVDF/GO fibres in the range of several micrometres did not cause a distinguishable change in their adsorption capacity. Electrospun PVDF/GO membranes without a porous structure inhibited a low adsorption capacity although they contained a high composition of GO. The modification of electrospun PVDF/GO membranes by adding PEG increased the distribution of GO on the surface of fibres, resulting in a more hydrophilic fibre surface and a notable increase in Pb2+ adsorption. The adsorption behaviour of Pb2+ onto electrospun PVDF/GO/PEG membranes was found to be dependent on contact time and pH. Reusability analysis indicated that the electrospun PVDF/GO/PEG membrane maintained a Pb2+ removal rate of over 80% after six adsorption-desorption cycles. Therefore, electrospun PVDF/GO/PEG membranes might be a promising adsorption material used in filtration systems for heavy metal removal.

Synthesis and Characterization of Hydrotalcite/Graphene Oxide Containing Benzoate for Corrosion Protection of Carbon Steel

( Thuy Duong Nguyen ),( Boi An Tran ),( Ke Oanh Vu ),( Anh Son Nguyen ),( Anh Truc Trinh ),( Gia Vu Pham ),( Thi Xuan Hang To ),( Thanh Thao Phan ) 한국부식방식학회(구 한국부식학회) 2020 Corrosion Science and Technology Vol.19 No.2

This work examined the corrosion protection performance of benzoate loaded hydrotalcite/graphene oxide (HT/GO-BZ) for carbon steel. HT/GO-BZ was fabricated by the co-precipitation method and characterized by infrared spectroscopy, X-ray diffraction, and scanning electronic microscopy. The corrosion inhibition action of HT/GO-BZ on carbon steel in 0.1 M NaCl solution was evaluated by electrochemical measurements. The benzoate content in HT/GO-BZ was determined by UV-Vis spectroscopy. Subsequently, the effect of HT/GO-BZ on the corrosion resistance of the water-based epoxy coating was investigated by the salt spray test. The obtained results demonstrated the intercalation of benzoate and GO in the hydrotalcite structure. The benzoate content in HT/GO-BZ was about 16%. The polarization curves of the carbon steel electrode revealed anodic corrosion inhibition activity of HT/GO-BZ and the inhibition efficiency was about 95.2% at a concentration of 3g/L. The GO present in HT/GO-BZ enhanced the inhibition effect of HT-BZ. The presence of HT/GO-BZ improved the corrosion resistance of the waterborne epoxy coating.

Corrosion Protection Properties of Cobalt Salt for Water-Based Epoxy Coatings on 2024-T3 Aluminum Alloy

Thu Thuy Thai,Anh Truc Trinh,Gia Vu Pham,Thi Thanh Tam Pham,Hoan Nguyen Xuan 한국부식방식학회 2020 Corrosion Science and Technology Vol.19 No.1

In this paper, the efficiency and the inhibition mechanisms of cobalt salts (cobalt nitrate and cobalt-exchangesilica Co/Si) for the corrosion protection of AA2024 were investigated in a neutral aqueous solution byusing the electrochemical impedance spectroscopy (EIS) and polarization curves. The experimental measurementssuggest that cobalt cation plays a role as a cathodic inhibitor. The efficiency of cobalt cation was importantat the concentration range from 0.001 to 0.01 M. The formation of precipitates of oxides/hydroxides ofcobalt on the surface at low inhibitor concentration was confirmed by the Scanning Electron Microscopy/EnergyDispersive X-Ray Spectroscopy (SEM/EDS) analysis. EIS measurements were also conducted for the AA2024surface covered by water-based epoxy coating comprising Co/Si salt. The results obtained from exposurein the electrolyte demonstrated the improvement of the barrier and inhibition properties of the coating exposedin the electrolyte solution for a lengthy time. The SEM/EDS analysis in artificial scribes of the coatingafter salt spray testing revealed the release of cobalt cations in the coating defect to induce the barrierlayer on the exposed AA2024 substrate.

Corrosion Protection Properties of Co3O4 and CoFe2O4 Nanoparticles for Water-Based Epoxy Coatings on 2024-T3 Aluminum Alloys

Thu Thuy Thai,Anh Truc Trinh,Thi Thanh Tam Pham,Hoan Nguyen Xuan 한국부식방식학회 2023 Corrosion Science and Technology Vol.22 No.2

In this study, cobalt oxide (Co3O4) and cobalt-doped magnetite (CoFe2O4) nanoparticles were synthesizedby a hydrothermal method. They were then used as corrosion inhibitors for corrosion protection ofAA2024-T3 aluminum alloys. These obtained nanoparticles were characterized by x-ray diffraction, fieldemissionscanning electron microscopy, and Zeta potential measurements. Corrosion inhibition activities ofCo3O4 and CoFe2O4 nanoparticles were determined by performing electrochemical measurements for bareAA2024-T3 aluminum alloys in 0.05 M NaCl + 0.1 M Na2SO4 solution containing Co3O4 or CoFe2O4nanoparticles. Corrosion protection for AA2024-T3 aluminum alloys by a water-based epoxy with or withoutthe synthesized Co3O4 or CoFe2O4 nanoparticles was investigated by electrochemical impedance spectroscopyduring immersion in 0.1 M NaCl solution. The corrosion protection of epoxy coating depositedon the AA2024-T3 surface was improved by incorporating Co3O4 or CoFe2O4 nanoparticles in the coating. The corrosion protection performance of the epoxy coating containing CoFe2O4 was higher than that of theepoxy coating containing Co3O4.

A Model-free Output Feedback Adaptive Optimal Fuzzy Controller for LC-filtered Three-phase Voltage Source Inverters

Nam Hai Trinh,Loc Ong Xuan,Nga Thi-Thuy Vu,Anh Tuan Nguyen 제어·로봇·시스템학회 2023 International Journal of Control, Automation, and Vol.21 No.6

This paper proposes a model-free output feedback control-based adaptive fuzzy controller using a current-sensorless configuration for LC-filtered three-phase voltage source inverters (VSIs). The proposed adaptive fuzzy scheme is constructed of three parts: an adapter, an adaptive optimal fuzzy controller, and an adaptive optimal fuzzy identifier. The adapter is designed based on an adaptive neuro-fuzzy inference system (ANFIS) network which uses the error between the system output and identifier output as an input to generate the online updated parameters. Next, both the adaptive fuzzy controller and the fuzzy identifier are designed based on the Takagi-Sugeno (T-S) fuzzy model. In particular, the proposed algorithm is robust against external disturbance and parameter uncertainties due to not requiring the system parameters. Moreover, the proposed scheme uses a current-sensorless configuration, which reduces the system complexity and cost. Both the stability of the proposed method and the convergence of adapted parameters are completely assured by using the Lyapunov stability theory. Finally, the effectiveness of the proposed adaptive fuzzy controller is verified through simulation in comparison with a conventional T-S fuzzy controller. The results show that the proposed model-free output feedback control-based adaptive fuzzy controller yields better control performance, such as faster transient response, smaller steady-state error, and lower total harmonic distortion (THD) under the change of load (step changes of linear load, unbalanced load, and nonlinear load), parameter variations, and input disturbances.

Innovation: From Capabilities to Performance in Manufacturing Enterprises in Vietnam

Bui Quang Hung,Trinh Thuy Anh,Nguyen Ngoc Thong 중앙대학교 경제연구소 2020 Journal of Economic Development Vol.45 No.1

This paper examines the impact of innovation capabilities on innovation performance and firm performance of the manufacturing industry. Innovation capability as the firm's ability to reconfigure and develop its resources and organizational capabilities to innovate. Innovation capability has four components: sensing capability, combination capability, networking capability, and learning capability. The innovation performance is the achievement or success of innovation made by a firm by the target, describes the concept of the three components: internal performance, commercial performance, and social performance. Performance has three components: finance, customer, and employee. The research methods used in this study are Structural Equation Modeling (SEM) and Fuzzy-set Qualitative Comparative Analysis (fsQCA). Participants in the questionnaire include 205 directors, CEO of manufacturing enterprises in Ho Chi Minh City and Binh Duong City. SEM result shows that there is a positive effect of innovation capacity and innovation performance on firm performance. However, the result of fsQCA shows that the combination of components (innovation capability and innovation performance) constitutes sufficient conditions for the presence of the firm performance.

Bias–stress-induced threshold voltage shift dependence of negative charge trapping in the amorphous indium tin zinc oxide thin-film transistors

Nguyen, Cam Phu Thi,Trinh, Thanh Thuy,Dao, Vinh Ai,Raja, Jayapal,Jang, Kyungsoo,Le, Tuan Anh Huy,Iftiquar, S M,Yi, Junsin Institute of Physics 2013 Semiconductor science and technology Vol.28 No.10

<P>Indium tin zinc oxide (ITZO)-based thin-film transistors (TFTs) were fabricated by dc magnetron sputtering in Ar + O<SUB>2</SUB> reactive gas, at room temperature. We present the effect of post-deposition annealing of ITZO thin films on the oxygen vacancies and on the characteristics of TFT devices. When the annealing temperature was increased from room temperature to 350 °C, the resistivity of ITZO film increased from 2.05 × 10<SUP>1</SUP> to 2.60 × 10<SUP>3</SUP> Ω cm and the interface trap density (<I>N</I><SUB>t</SUB>) of the TFTs reduced from 3.18 × 10<SUP>13</SUP> to 4.83 × 10<SUP>11</SUP> cm<SUP>−2</SUP>. The TFT with the ITZO film which was annealed at 350 °C showed a very small shift in turn-on voltage, even after applying positive bias stress of +12 V for 10<SUP>4</SUP> s. The current–voltage characteristics of 350 °C annealing temperature sample indicated that these TFTs were in an enhanced mode of transistor operation with a high on-to-off current ratio of ∼1.26 × 10<SUP>6</SUP>, high field-effect mobility of 14.17 cm<SUP>2</SUP> V<SUP>−1</SUP> s<SUP>−1</SUP>, and low subthreshold slope of 1.23 V/dec. The trapping time reduced from 3720 to 1546 s as the annealing temperature increased from room temperature to 350 °C. These results suggest that thermal annealing played an important role in reducing defects as well as improvement in stability of the TFTs.</P>