Generating accurate digital tree models from scanned environments is invaluable for forestry, agriculture, and other outdoor industries in tasks such as identifying fall hazards, estimating trees’ biomass calculating traversability. Existing methods reconstruction rely on sparse feature identification to segment a forest into individual trees generate branch structure graph, limiting their appl...

Identifying terrain type is important for safely operating robots exploration in unstructured environments. In this letter, we firstly proposed a novel tapered whisker-based semi-supervised reservoir computing (TWSSRC) system improving classification and property estimation traversability assessment with low cost. Three Hall sensors are used to capture the vibration at different locations of wh...

We study higher-dimensional traversable wormholes in the context of Rindler-AdS/CFT. The hyperbolic slicing a pure AdS geometry can be thought as topological black hole that is dual to conformal field theory space. maximally extended contains two exterior regions (the Rindler wedges AdS) which are connected by wormhole. show this wormhole made double trace deformation violates average null ener...

This thesis is concerned with autonomous navigation of a robotic vehicle in a semi-structured environment. Starting from the low-level problem of range sensing and moving on to more complex tasks like spatial representation, registration and mapping, path planning and following, this dissertation aims at providing a consistent picture of an autonomous navigation system. A unifying concept throu...

Autonomous mobile robots have been used in outdoor delivery services. Delivery to cope with dynamic obstacles and various environmental conditions. Although several successful technological solutions are available for indoor applications, there still plenty of unsolved problems environments. In this study, we concentrate on three challenges hindering the development campus robots. The first cha...

4.1 Introduction Crisis management teams (e.g. fire and rescue services, anti-terrorist units ...) are often confronted with dramatic situations where critical decisions have to be made within hard time constraints. In these circumstances, a complete overview of the crisis site is necessary to take correct decisions. However, obtaining such a complete overview of a complex site is not possible ...

Suppose, the Universe comes into existence (as classical spacetime) already with an empty spherically symmetric macroscopic wormhole present in it. Classically the wormhole would evolve into a part of the Schwarzschild space and thus would not allow any signal to traverse it. I consider semiclassical corrections to that picture and build a model of an evaporating wormhole. The model is based on...

Many animals, modern aircraft, and underwater vehicles use fusiform, streamlined body shapes that reduce fluid dynamic drag to achieve fast and effective locomotion in air and water. Similarly, numerous small terrestrial animals move through cluttered terrain where three-dimensional, multi-component obstacles like grass, shrubs, vines, and leaf litter also resist motion, but it is unknown wheth...

We study holographic entanglement and information scrambling in de-Sitter (dS) space the context of DS/dS correspondence. find that our previously identified non-local structure dS vacua can be extended out time-reflection symmetric slice. extend geometry to a two-sided configuration calculate zero-time mutual between two intervals on different sides when there is localized shock wave bulk. Int...

Rough terrain, such as the rubble that we would expect to find in urban disaster areas, will likely impede robot mobility. The goal of this paper is to find methods for quantifying the difficulty a robot should encounter traversing a region of rough terrain. We construct three metrics describing rough terrain robot mobility. In order to simplify the problem we assume that the rough terrain in q...