Single Server Model: A worker is busy 70% of the time.
Two Server Model: Workers are busy only 35% of the time.
Three Server Model Calculation: If one worker is busy at 70%, then with three workers, each worker's busy rate is:
70% / 3 = 23.3%
Example for Seven Server Model: Each worker would be busy:
70% / 7 = 10%
Definitions:
Time in Line (TL): Time customers spend waiting.
Time in System (TS): Total time from arrival to service completion.
One Server Model:
TL = 14 minutes, TS = 20 minutes (6 min service time).
Example: A bank with one teller serving customers, where each customer takes about 6 minutes, results in some waiting time.
Two Server Model:
TL = 0.8 minutes, TS = 6.8 minutes (service time remains 6 minutes).
Example: A small cafe with two baristas serving customers, significantly reducing the line.
Impact of Adding Workers:
Adding one worker significantly reduces line wait time because:
More customers can be served simultaneously.
Example: A customer service desk increases from 2 to 3 representatives, reducing the time customers wait.
Economics of Staffing:
Companies must balance the increased cost of additional workers against the benefit of reduced wait times.
Importance of Vendor Managed Inventory (VMI)
VMI Definition: Vendors track and manage inventory levels, reducing the burden on retailers.
Benefits of VMI:
Efficiency: Vendors decide optimal inventory levels based on market demand.
Restocking: Vendors often deliver items directly, managing their stock and reducing out-of-stock items for stores.
Example: A grocery store allows suppliers to directly manage stock levels for perishable items.
Risks:
Overreliance on one supplier can lead to challenges if supply levels are missed.
Target and Similar Retailers:
Role of Store Managers: Work long hours managing high volumes and personnel turnover.
Example: Store managers at big-box retailers juggling staffing issues while aiming for sales targets.
Making strategic decisions based on sales revenue and inventory levels is critical.
Store Layout Purpose:
High-Profit Items: Fruits, vegetables, and meats are placed at the entrance to increase visibility and sales.
Impulse Buys: Strategic placement encourages customers to buy items unexpectedly.
Example: Candy placed near the checkout line to encourage last-minute purchases.
Target Store Example:
Profit centers include women’s clothing and accessories upon entering the store.
Grocery items have lower profit margins and are often placed less prominently.
Scan-Based Inventory Model:
Retailers do not pay for goods until they are sold, reducing financial risk to the store.
Vendor Ownership: Products remain the property of vendors until sold, which shifts risk from the retailer to the supplier.
Benefits for Retailers: Less financial burden and only needing to deal with sold goods.
What Happens to Unsold Inventory?
Pulping and Recycling: Items may be recycled or disposed of if unsold for too long.
Example: Expired food products are disposed of properly to avoid waste.
Charitable Contributions: Donating excess stock can be tricky due to logistics and brand management concerns.
Pricing Psychology:
Understanding how brands manage their distinct pricing strategies can help consumers recognize potential deals vs. marketing tactics.
Brand Management Dynamics:
High-end brands often prevent discounts through returns or destruction to maintain exclusivity.