Case study requirements: Students have to know which Performance Measurement System is used in their case study and justify the perspectives that the PMS was built on it and the rest information of Performance Measures types. Firstly: Prepared four different models of case studies (they attached). In addition for instance; the required for one of them as follows: In accordance with your understanding of the case. Explain the following: 1. What is type of PMS illustrated at the organization that you are going to examine and what do you know about it. 2. What is type of managerial accounting (BSC, JIT, TC) system or tool declared and what do you know about it. 3. Regarding to understanding of Balanced Scorecard, Just in Time, Target Costing, what do you know about the outcome benefits of each one of them and the implication of application of each one, however it will be applied individually or integratory at business organizations. In addition, what do you know about the effect of application the pervious systems/tools on decision-making process to achieve the strategic desired goals in business organizations? Secondly: Prepared four different models of case studies that investigate the consequences of coronavirus COVID 19 (they attached). In addition for instance; the required for one of them as follows: In accordance with your understanding of the case. Explain the following: 1. What is type of PMS illustrated at the organization that you are going to examine and did it countered coronavirus COVID 19? 2. What is type of managerial accounting (BSC,JIT,TC) system or tool declared and what do you know about the procedures that followed to reduce or raise the side effect of coronavirus COVID 19? 3. Regarding to understanding of Balanced Scorecard, Just in Time, Target Costing, what do you know about the impacted of coronavirus COVID 19 on outcome benefits. It will be achieved through the investigation of business organizations such as (Supermarket, shipping. Privet and public school, Tourism hospitality) would you answer the following questions:- The first: 1. If the organization that followed of performance evaluation BSC, so what are the influences of coronavirus COVID 19 on internal operation perspective (if any)? 2. If the organization that followed of performance evaluation BSC, so what are the influences of coronavirus COVID 19 on leaning and growth perspective (if any)? 3. If the organization that followed of performance evaluation BSC, so what are the influences of coronavirus COVID 19 on leaning and growth perspective (if any)? 4. If the organization that followed of performance evaluation BSC, so what are the influences of coronavirus COVID 19 on customer perspective (if any)? 5. If the organization that followed of performance evaluation BSC, so what are the influences of coronavirus COVID 19 on financial perspective (if any)? The second: 1. If the organization that followed of managing supply chain cost, J.I.T or MRP system/tool. What are the influences of coronavirus COVID 19 on inventory cost, for all inventory phases (raw material, work-in-process, good sold). 2. If the organization that followed of managing supply chain cost, J.I.T or MRP system/tool. What are the influences of coronavirus COVID 19 on total sales? 3. If the organization that followed of managing activity costing management the target costing system. What are the influences of coronavirus COVID 19 on total costs, revenue and net profit?