A New Framework of Urban Serious Game to Empower the Smartness of Citizens

With the Smart City concept gaining momentum around the world in recent years, Information and Communication Technologies (ICTs) have become increasingly popular and indispensable. However, existing criticisms claim that, in addition to Technology, the smartness of citizens should also be emphasized. In other words, it is essential to enable citizens to become involved in their cities as stakeholders. In this paper, a game-based approach to facilitate the involvement of citizens in civic life is taken. By analyzing some popular digital video games, Augmented Reality (AR) and theories from socialists and psychologists, a new Urban-gaming framework is built, which could be used for data collection, decision-making and other urban issues

HARMONIOUS MULTICAST RETRANSMISSION FOR LOW-POWER AND LOSSY NETWORKS FIRMWARE UPGRADING

Techniques are described herein for composing multicast retransmissions harmoniously by prioritizing transmission of new messages and regulating retransmission of old messages. Only the same multicast messages are forwarded simultaneously such that loss due to collision can be significantly reduced. By measuring the intervals of new messages and counting the duplicates, retransmissions are reasonably curbed with awareness of input rate and medium usage. This prevents the “domino effect” on a crowded channel when loss occurs. Moreover, self-silence mechanisms allow regular nodes to release channel resources for critical forwarders. Multicast retransmission is provided with guaranteed delivery rate, which is imperative for firmware upgrading in Low-Power and Lossy Networks (LLNs)

Ediacaran Macro Body Fossils

This paper, Ediacaran Macro Body Fossils, reports a new discovery of well preserved three dimensional macro body fossils of the Ediacaran Period in central YunNan province in the People's Republic of China. These body fossils will enable more detailed and in-depth exploration of the evolution of multi-cellular macro organisms on this planet, whereas in the past, researches could only rely on cast or imprint fossils

CONCURRENT TRANSMISSION MECHANISM TO IMPROVE THROUGHPUT OF BOTTLENECK DEVICES IN LOW-POWER AND LOSSY NETWORKS

Techniques are described herein for designing a concurrent channel mechanism to cause mesh network border router devices or key/bottleneck devices to communicate with multiple devices concurrently. This may reduce collision probabilities and thus enhance the scaling ability of a network

Scaling of quantum Fisher information for quantum exceptional point sensors

In recent years, significant progress has been made in utilizing the divergence of spectrum response rate at the exceptional point (EP) for sensing in classical systems, while the use and characterization of quantum EPs for sensing have been largely unexplored. For a quantum EP sensor, an important issue is the relation between the order of the quantum EP and the scaling of quantum Fisher information (QFI), an essential quantity for characterizing quantum sensors. Here we investigate multi-mode quadratic bosonic systems, which exhibit higher-order EP dynamics, but possess Hermitian Hamiltonians without Langevin noise, thus can be utilized for quantum sensing. We derive an exact analytic formula for the QFI, from which we establish a scaling relation between the QFI and the order of the EP. We apply the formula to study a three-mode EP sensor and a multi-mode bosonic Kitaev chain and show that the EP physics can significantly enhance the sensing sensitivity. Our work establishes the connection between two important fields: non-Hermitian EP dynamics and quantum sensing, and may find important applications in quantum information and quantum non-Hermitian physics.Comment: 18 pages, 5 figure