Problems and Countermeasures of the Third-party Logistics Enterprises
The third-party logistics enterprise is still in the development stage in China.The rapid development of third-party logistics industry plays an important role in economic growth and in enhancing the international competitiveness of the third-party logistic enterprises.However,in development of logistics industry,there are many problems in the third-party logistic enterprises.In order to promote the healthy growth of logistic industry,and improve the quality of the third-party logistic enterprises,the problems in the development of the third-party logistic enterprises in china were analyzed and put forward some countermeasures.
We describe preliminary results from an effort to quantify the uncertainties in parton distribution functions and the resulting uncertainties in predicted physical quantities. The production cross section of the $W$ boson is given as a first example. Constraints due to the full data sets of the CTEQ global analysis are used in this study. Two complementary approaches, based on the Hessian and the Lagrange multiplier method respectively, are outlined. We discuss issues on obtaining meaningful uncertainty estimates that include the effect of correlated experimental systematic uncertainties and illustrate them with detailed calculations using one set of precision DIS data.