Once again in this study, we emphasizes strongly on applications of mathematical solutions for industrial uses. By using qualitative analysis, synthesis and inductive methods, together with statistic data, our paper target is to analyze aspects of SWOT analysis on blockchain technology and its opportunities for various industries and sectors in emerging markets such as Vietnam. This is based on the original foundation theory indicating that blockchain tech functioned as a mathematical solutions that can be applied for solving commerce secrets, with high data security and can be used for intellectual property. Among our research results is findings on the connection between IoTs - Internet of Things and blockchain tech, as well as relationship between AI - Artificial intelligence and blockchain tech. Last but not least authors propose cybersecurity risk solutions and there are policies implications attached.

Our study will make an examination of the relationship between official development assistance (ODA), Foreign Direct Investment (FDI) and economic growth (GDP) in an emerging economy such as Vietnam. Regarding to methods, authors use statistics, quantitative combined with qualitative analysis. However, in the long run, although GDP has a vague effect on ODA, on the contrary, ODA put a big (significantly) effect on GDP, at the beginning of the fifth year, the relationship is not clear between ODA and GDP to promote itself increase or decrease. Foreign aid also affects the growth of nations (negatively) and, over periods, positively contributes to economic growth. Last but not least,  it must be confirmed that ODA is an extra capital source for investment in development of socio-economic infrastructure and a catalyst for other investment sources such as FDI and investment capital private sector.

The purpose of this study is to figure out what are results of VAR model -a New Model approach for Enhancing Risk Management Mechanism in case of Vietinbank CTG in our country. This study mainly use combination of quantitative methods (statistics, calculation formulas) and qualitative methods including synthesis, inductive and explanatory methods. The research findings tell us that -Risk free rate reduce in short term will reduce beta; second, Industrial manufacturing stabilize in medium term will cause beta CTG stable; third, Also we see that increase in lending rate in medium term will cause beta CTG increase; fourth, a reduction in trade balance in short term will reduce beta, but in long term, stability in trade balance will stabilize beta CTG; fifth, Fluctuation in exchange rate will influence beta, in long term recover and increase in exchange rate will stimulate beta increase. Hence, authors would recommend that: Ministry of Finance, State bank of Vietnam, Treasurer, and relevant agencies need not to increase Rf (to increase bank beta); then, Not increasing lending rate too much to increase beta; next, Not increasing trade balance too much as well. Last but not least, Management implications: Improving MIS system to provide information. Besides, this study also give out recommendations for enhancing socio-economic roles of Vietnam banks in future.

The applications of mathematics in finance have been developed widely in recent years. In our study, authors aim to propose weighted beta index formula in banking industry and then, factors that affect bank sustainable development, as well as risk management policies and strategies for commercial banks in Vietnam financial market. This study mainly use combination of quantitative methods (statistics, calculation formulas) and qualitative methods including synthesis, inductive and explanatory methods. Our study results show that first, because mean value of weighted beta in period 2011-2020 higher than beta in 2011-2016 time, we need to pay attention to risk management solution in bank system. Second, as CPI has negative impact while G, IM and R has positive impact on weighted beta: and Risk free rate have higher effects on market risks of banks, Ministry of Finance, State bank of Vietnam and relevant agencies need to control GDP growth as well as rates of Treasury bonds and lending rate (not increase so much) toward benefits for managing risk. And do not need to reduce CPI too much. Then we also mention the roles of digital data and transformation to help us to build better risk model and management information system at banks.

Online marketing and digital marketing via social media channels has motivated baking activities in emerging markets such as Vietnam in recent time and contribute to maintain leadership roles of banks in Vietnam market and contribute for economic development. Beside, during studying time in universities and colleges, students need to be educated with practical marketing lessons, not only with traditional marketing, marketing mix an 4P but also with, esp. Digital marketing. This study will analyze leadership roles of a big bank in Vietnam -BIDV bank (Bank for Investment and Development of Vietnam), for instance, via econometric model, we will find out effect of macro components on bank net profit and then suggest proper policies. Students also study lessons of marketing and contribution of digital banking.