Define Matrix Structure in terms of a integrated global structure

1) Define Matrix Structure in terms of a integrated global structure
2) Define ethnocentric and polycentric staffing approaches.
3)Define culture shock and reverse culture shock and explain how do you avoid them.
4)If a company is hiring an expatriate from their Lawrenceville, NJ office to work in China, how should they handle the selection process?
5)Define Differentiation and Integration in terms of organizing for globalization and why they are important.