نتایج جستجو برای: dynamic environment

تعداد نتایج: 888695  

Journal: :Computers, Environment and Urban Systems 2018
Kaveh Shahabi John P. Wilson

Article history: Received 8 August 2016 Received in revised form 19 August 2017 Accepted 26 August 2017 Available online xxxx In emergency management, tools are needed so we can take the appropriate action at different stages of an evacuation. Recent wildfires in California showed how quickly a natural disaster can affect a large geographical area. Natural disasters can create unpredicted traff...

Journal: :Transportation Science 2003
Dimitris Bertsimas Ioana Popescu

We investigate dynamic policies for allocating scarce inventory to stochastic demand for multiple fare classes, in a network environment so as to maximize total expected revenues. Typical applications include sequential reservations for an airline network, hotel, or car rental service. We propose and analyze a new algorithm based on approximate dynamic programming, both theoretically and comput...

Journal: :Annales des Télécommunications 2018
Brian Bouterse Harry G. Perros

Given the costs associated with a cloud infrastructure, dynamic scheduling of virtual machines (VMs) can significantly lower costs while providing an acceptable service level. We develop a series of forecasting models for predicting demand for VMs in a cloud-based software used as a SaaS. These models are then used in a periodic-review provision model which determines how many VMs should be pro...

Journal: :Surgical innovation 2007
Audrey K Bell Matthew B Saide Jacqueline T Johanas Gary G Leisk Steven D Schwaitzberg Caroline G L Cao

Existing laparoscopic box trainers consist only of static tasks and do not adequately prepare surgeons to navigate the dynamic surgical environment. This paper describes an innovative design using controlled motorized target movements to enhance the training of dynamic motor skills. The prototype was tested using 15 subjects with different surgical experience levels. The task required accurate ...

2016
Aakash Gupta Sachin Umrao Sumit Kumar

The aim of this project is to study and implement path planning algorithms on a mobile robot working in a dynamic environment like warehouse delivering packages from one place to another. During its journey if the robot encounters any obstacle, it replans its trajectory and proceed to the target. The system was developed entirely in Robot Operating System(ROS) and Gazebo. A 2D occupancy grid ma...

2003
Michael D. Hendricks Max J. Egenhofer Kathleen Stewart

To travel successfully in a dynamic space-time setting, wayfinders must project the impact of a changing environment onto future travel choices. When making decisions, however, people often fail to consider the impact of future changes. They instead overly rely on current system states. In addition, spatial information systems designed for wayfinders typically focus on current or historic trave...

2009
Aras Akbari

A mobile robot needs to perceive the objects around it and track their moving in real time. Also it need to identify the property of the object, for example, it’s human or not. Many researches have been done by using Laser-Based system or visionbased system. The key challenge is that though laser-scanner can get a good estimated position of object in the laser range, it may miss some objects th...

2014
Urna Basu Christian Maes

Depending on how the dynamical activity of a particle in a random environment is influenced by an external field E, its differential mobility at intermediate E can turn negative. We discuss the case where for slowly changing random environment the driven particle shows negative differential mobility while that mobility turns positive for faster environment changes. We illustrate this transition...

2012
Sho Tsugawa Hiroyuki Ohsaki Yuichi Itoh Naoaki Ono Keiichiro Kagawa Kazuki Takashima Makoto Imase

In this paper, we present our vision on largescale and dynamic social network analysis in real environment, which is expected to be enabled by introduction of large-scale heterogeneous sensors in ambient environment. We address challenges toward realization of large-scale dynamic social network analysis in real environment, and discuss several promising applications. We finally present our prel...

راعی, ابوالقاسم اسدالله, رضایی, علیرضا, نادی, ابوالفضل,

In this paper a new structure based on Bayesian networks is presented to improve mobile robot behavior, in which there exist faulty robot sensors. If a robot likes to follow certain behavior in the environment to reach its goal, it must be capable of making inference and mapping based on prior knowledge and also should be capable of understanding its reactions on the environment over time. Old ...

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