## 5 Analysis of Calculation Examples
### Case Calculation and Analysis of E-Commerce Logistics Alliance of Forest Products  
The actual cost and profit of e-commerce logistics enterprises of forest products in the stage of road transportation usually depend on the following parameters:  
1. Order quote \(K\) (unit: CNY) is the quote obtained by e-commerce logistics enterprises of forest products when undertaking transportation tasks; it is affected by the market, and the value fluctuates within a certain range;
2. Cargo weight \(W_{h}\) (unit: tons) is the weight of the goods contracted by e-commerce logistics enterprises of forest products;
3. Cargo volume \(V_{h}\) (unit: m\({}^{3}\)) is the volume of the goods contracted by e-commerce logistics enterprises of forest products;
4. Vehicle load rate \(R\) is the ratio of the weight of the goods to the maximum load capacity of the vehicle;
5. Empty driving distance \(D_{U}\) (unit: km) is the distance that e-commerce logistics enterprises of forest products travel from the shipping company to pick up empty containers and go to forest products e-commerce enterprises for loading; it is affected by factors such as weather and road conditions, and the value fluctuates within a certain range;
6. Loaded driving distance \(D_{L}\) (unit: km) is the distance from the loading of a single vehicle from the forest products e-commerce enterprises to the port of loading port; itis subject to the influence of weather and road conditions and other factors, and the value floats within a certain range;
7. Empty-load fuel cost \(O_{U}\) (unit: CNY/km) is the fuel cost consumed per kilometer when a single vehicle is empty; it is affected by the market and the driver's driving habits, and the value usually fluctuates within a certain range. The empty-load fuel costs of 20 GP and 40 GP containers are, respectively, \(O_{U1}\) and \(O_{U2}\);
8. Full-load fuel cost \(O_{F}\) (unit: CNY/km) is the fuel cost consumed per kilometer when a single vehicle is fully loaded; it is affected by the weight of the goods, the market, and the driver's driving habits, and the value usually fluctuates within a certain range. The full-load fuel costs of 20 GP and 40 GP containers are, respectively, \(O_{F1}\) and \(O_{F2}\);
9. Loaded fuel cost \(O_{L}\) (unit: CNY/km) is the fuel cost of the truck that varies with the weight of the goods. The calculation formulas for the loaded fuel costs of 20 GP container trucks and 40 GP container trucks are, respectively, as follows: \[\left\{ \begin{array}{l}O_{L1}=(O_{F1}-O_{U1})R_{1}+O_{U}\\ O_{L2}=(O_{F2}-O_{U2})R_{2}+O_{U}\end{array} \right.\] (31)
10. Expressway toll fee \(H\) (unit: CNY/km) is the cost per kilometer for a single vehicle during transportation on the expressway. The expressway mileage is calculated as 80% of the driving distance;
11. Annual departure time \(n\) (unit: time) is affected by weather, road conditions, and the number of orders, and the value fluctuates within a certain range;
12. Vehicle insurance premium \(C\) (unit: CNY) is the annual vehicle insurance premium required to be paid for a single vehicle;
13. Annual vehicle maintenance cost \(M\) (unit: CNY) is the annual maintenance cost required to be paid for a single vehicle;
14. Driver's annual salary \(S\) (unit: CNY) is the salary paid by the enterprise to the driver annually;
15. Vehicle purchase cost \(B\) (unit: CNY) is the cost required by the enterprise to purchase a single vehicle;
16. Vehicle depreciation cost \(G\) (unit: CNY) is the depreciation period for semi-trailers and trailers, which is set at 15 years, and the depreciation cost is \(G=B/15n\);
17. Loading and unloading cost \(L\) (unit: CNY/m\({}^{3}\)) is the labor cost required for the loading and unloading of vehicles.