This paper takes the actual scene of Aletheia University campus – the Class 2 national monument, the first educational institute in northern Taiwan as an example, to present a 3D virtual navigation system which supports user positioning and pre-download mechanism. The proposed system was designed based on the principle of Voronoi Diagra) to divide the virtual scenes and its multimedia informati...

In some countries, regional authorities may attempt to rebalance the allocation of national facilities in benefit their own region which, turn, cause disturbances central government’s decision-making proces. Regarding hierarchical nature these types decisions, classical optimization models are not effective and use multi-level programming can increase efficiency planning. Our paper aims address...

Metatarsalgia of the central ray is a major surgical challenge. Without precise correction, transfer lesions may occur at an adjacent metatarsal or patients may have inadequate pain relief. Current surgical treatment strategies do not facilitate precise positioning in different planes, resulting in disappointing outcomes. To achieve better outcomes we used an oblique sliding osteotomy to facili...

The precise recognition of appropriate synaptic partner neurons is a critical step during neural circuit assembly. However, little is known about the developmental context in which recognition specificity is important to establish synaptic contacts. We show that in the Drosophila visual system, sequential segregation of photoreceptor afferents, reflecting their birth order, lead to differential...

An indoor positioning system (IPS) is defined as the network of devices which is widely used to wirelessly locate objects under the same roof using radio waves, acoustic signals, magnetic fields and other sensory information grasped by mobile devices. Reliable indoor positioning is a base for emerging indoor location based services. Bluetooth Indoor Positioning System is said to be the intersec...

So far, the problem of positioning in sensor and ad hoc networks has been studied in a non-adversarial setting. We show that most of the proposed positioning algorithms are highly vulnerable to attacks from compromised network nodes and malicious (outside) attackers. We propose a set of mechanisms for securing positioning. Our mechanisms aim to enable each node to obtain correct information abo...