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Stigmergy is a mechanism that allows the coordination of actions within the same agent or across different agents by means of traces left in the environment. We propose a stigmergetic approach to robot navigation in which a robot sets values in a hexagonal grid of RFID tags buried under the floor. This approach only requires minimal resources on the robot.(More)
Editors The MSU International Development Paper series is designed to further the comparative analysis of international development activities in Africa, Latin America, Asia, and the Near East. The papers report research findings on historical, as well as contemporary, international development problems. The series includes papers on a wide range of topics,(More)
We present a number of complete sets of series expansion formulas for neutrino oscillation probabilities in matter of constant density for three flavors. In particular, we study expansions in the mass hierarchy parameter α ≡ ∆m 2 21 /∆m 2 31 and mixing parameter s 13 ≡ sin θ 13 up to second order and expansions only in α and only in s 13 up to first order.(More)
We show how to apply the Leggett-Garg inequality to opto-electro-mechanical systems near their quantum ground state. We find that by using a dichotomic quantum nondemolition measurement (via, e.g., an additional circuit-QED measurement device), either on the cavity or on the nano-mechanical system itself, the Leggett-Garg inequality is violated. We argue(More)
A special case of a conjecture of M. El-Zahár states that a graph G with 2k vertices and minimum degree k, contains every bipartite 2-regular graph H on 2k vertices as a spanning subgraph. In this paper it will be proved that G contains the union of (k − 1) cycles of lengths 4 and a path of order 4. Using this result it will also be proved that G contains(More)
The Dicke model describes N qubits ͑or two-level atoms͒ homogeneously coupled to a bosonic mode. Here we examine an open-system realization of the Dicke model, which contains critical and chaotic behaviors. In particular, we extend this model to include an additional open transport qubit ͑coupled to the bosonic mode͒ for passive and active measurements. We(More)