This study divides the sales cycle of fresh agricultural products into two stages according to the features of fresh agricultural products, establishes two pricing strategies according to its sales and through constructing an centralized-control model of supply chain under the constraints of revenue sharing contract and through analyzing different prices in the two stages, it summarizes the sal...

Variation of frequency and voltage by load changes in a microgrid is a challenge in droop control method. Centralized restoration frequency or voltage in a microgrid requires communication link and therefore affects the advantage of decentralized droop control such as reliability, simplicity and inexpensiveness. This paper proposes a decentralized method that restores the frequency of a microgr...

Wireless sensor networks are usually composed of autonomous nodes. Each networked node constructs its own neighbor table, routing table, and schedules internal tasks on its own. However, the inherently distributed control in a sensor network conflicts with the deterministic requirements when we develop real-time applications on top of wireless sensor networks. In this paper we argue for the cas...

Transport layer and application layer of network stack use end-to-end adaptation protocols (e.g., TCP and bitrate-adaptive video) to achieve high performance by continuously adapting endpoint behavior to changes of network conditions. The traditional belief is that these protocols must be run independently by endpoints to achieve desirable performance. In essence, they use reactive logic trigge...

this paper introduces the application of wave variable method in reducing the effect of delay during the transmission of control signals via large distances in a multimachine power system. Fast response and pure control signals applied to a power system have great importance in control process. At first we design a centralized optimal control considering no transport delay and then we compare t...

As the Navy builds ships with more complex, distributed systems, centralized control of distributed systems becomes a single point of failure. This is particularly important for recovering from damage, when the rapid execution of complex tasks often is necessary to effectively recover from damage. A control system that is vulnerable to damage when it is needed most, when recovering from damage,...

While router buffers have been used as performance multipliers, they are also major consumers of area and power in on-chip networks. In this paper, we propose centralized elastic bubble router a router micro-architecture based on the use of centralized buffers (CB) with elastic buffered (EB) links. At low loads, the CB is power gated, bypassed, and optimized to produce single cycle operation. A...

There have been research initiatives in centralized control recently, which advocate that the control of an autonomous system (AS) should be performed in a centralized fashion. In this paper, we propose an approach to perform traffic engineering and routing in networks with centralized control, named LP-redirect. LP-redirect is based on an efficient formulation of linear programming (LP) that r...

This thesis investigates distributed router architectures and IP networks with centralized control. While the current trend in IP-router architectures is towards decentralized design, there have also been research proposals for centralizing the control functions in IP networks. With continuous evolution of routers and IP networks, we believe that eventually IP networks in an autonomous system (...