A crucial question in the design of ecient logistics systems is the identi®cation of locations for distribution centers (DCs). However, the optimization of these location decisions requires careful attention to the inherent trade-o€s among facility costs, inventory costs, transportation costs, and customer responsiveness. This paper presents a modeling approach that provides such an integrated...

Customer satisfaction has long been recognized as one of the critical success factor in today’s competitive business environment as it affects companies’ market share and customer retention (Ooi et al. 2011). O'Sullivan and Mc Callig (2012) also find that customer satisfaction positively and significantly moderates the earnings-firmvalue relationship as customer satisfaction is key operational ...

Fully automated sortation processes play a crucial role in modern distribution networks of the parcel service industry. In this context, the paper on hand systematically investigates di erent design alternatives of closed-loop tilt tray sortation conveyors. Especially, the number of loading stations for feeding parcels into a conveyor system and the relation to the subordinate decision problem ...

1 Introduction Transportation in modern distribution centers must be fast and reliable, robust against faults, and flexible and scalable to the dynamics of the transportation. One way to achieve these requirements is to replace conventional conveyor system with a group of autonomous mobile robots. In this work we show benefits of this approach in simulation. The investigation is an extension of...

As a supplement of our previous work [10], we consider the localized region of the random Schrödinger operators on l2(Z) and study the point process composed of their eigenvalues and corresponding localization centers. For the Anderson model, we show that, this point process in the natural scaling limit converges in distribution to the Poisson process on the product space of energy and space. I...

Adequate supplies of tuberculosis laboratory reagents and consumables are necessary for tuberculosis diagnosis and monitoring of treatment response. This study assessed the distribution and stock levels of laboratory commodities used in tuberculosis control in health centers of Amhara region, Ethiopia. A cross-sectional study was conducted in 82 health centers, among 801, providing sputum micro...

This paper considers a two-level vendor managed inventory (VMI) system comprising a distribution center (DC) and a retailer. Both the DC’s and the retailer’s replenishment decisions follow the order-up-to-level policy and aim at maximizing the profit of the overall system. We critically examine the potential of the DC’s ability to modify delivery decisions, identify and quantify the cost factor...

The statistical properties of the local topology of two-dimensional turbulence are investigated using an electromagnetically forced soap film. The local topology of the incompressible 2D flow is characterized by the Jacobian determinant Lambda(x,y) = 1 / 4(omega(2)-sigma(2)), where omega(x,y) is the local vorticity and sigma(x,y) is the local strain rate. For turbulent flows driven by different...

Locating distribution centers optimally is a crucial and systematic task for logistic operators and decision makers. Optimally located distribution centers can significantly improve the logistic system’s efficiency and reduce its operational cost. However, it is not an easy task to optimize distribution center locations and previous studies focused primarily on location optimization of a single...

The benefits of simultaneous consideration of siting and sizing of distribution centers have been well acknowledged in supply chain design. Most formulations assume that the potential DC sites are known and the decision on location is to select sites from the finite potential DC sites. However, the quality of this discrete version problem depends on the selection of potential DC sites. In this ...