Blockchain:
The Application of Blockchain Technology
Services of blockchain technology
Data Management of Blockchain
The decentralized model of blockchain
The Security of Blockchain
Privacy and Trust
Smart Contract Management of Blockchain
Design of Blockchain Data Model
Transaction Management of Blockchain
The Application of Digital Currency
Blockchain trading platform
Blockchain and Economic Management
The transaction value of blockchain
History:
Prediction methods and combined prediction models
Research on Factors Influencing the Market Economy
Establish a model to predict the future development of the market
Least Squares Support Vector Machine
Mathematical Models and Regression Analysis
Principal component analysis
Other market, blockchain prediction models, and market
Economics:
Microeconomics/Macroeconomics
Econometrics
Finance
Finance Studies
Statistics
Accounting
Economic development
Economic policy
Agricultural economy
International economy 
Finance and Investment
Human resources
Electronic Commerce
Labor and Population Economy
Marketing management
Consumer behavior