Software-Defined Networking (SDN) is a new network technology that decouples the control plane logic from the data plane and uses a programmable software controller to manage network operation and the state of network components. In an SDN network, a logically centralized controller uses a global network view to conduct management and operation of the… (More)
The ever-increasing operational cost of geographically distributed datacenters has become a critical issue for cloud service providers. In order to cut the electricity cost of geographically distributed datacenters, several workload management schemes have been proposed, such as Electricity price-aware InteR-datacenter load balancing (EIR), which reduces… (More)
The Facilitating Interactions for Dogs with Occupations (FIDO) project in the Animal Interaction Lab at Georgia Tech aims to facilitate communication between working dogs and their handlers. Here, the authors discuss their research on testing a working dog's ability to perform distinct tasks in response to vibrations at different points on their body.
We address the problem of performing silent speech recognition where vocalized audio is not available (e.g. due to a user's medical condition) or is highly noisy (e.g. during firefighting or combat). We describe our wearable system to capture tongue and jaw movements during silent speech. The system has two components: the Tongue Magnet Interface (TMI),… (More)
Software-Defined Networking (SDN) brings great opportunities to improve network performance. However, due to budget constraints and technique limitations, Internet Service Providers (ISPs) can upgrade only a limited number of conventional switches to SDN switches in real backbone networks at one time. In this paper, we propose one heuristic scheme for… (More)
Network virtualization is a double-edged sword that facilitates network innovation but may cause information leakage between virtual nodes coexisting on the same substrate node via covert channels. This paper represents the first attempt to consider risk-tolerant coexistence in virtual network embedding. We propose a secure virtual network embedding scheme… (More)
Software-Defined Networking (SDN) allows flexible and efficient management of networks. However, the limited capacity of flow tables in SDN switches hinders the deployment of SDN. In this paper, we propose a novel routing scheme to improve the efficiency of flow tables in SDNs. To efficiently use the routing scheme, we formulate an optimization problem with… (More)
Systems that recognize silent speech can enable fast, hands-free communication. Two prototypes let users control Google Glass with tongue movements and jaw gestures, requiring no additional equipment except a tongue-mounted magnet or consumer earphones augmented with embedded proximity sensors.