This paper focuses on multi-sensor fusion for navigation in difficult environments where none of the existing navigation technologies can satisfy requirements for accurate and reliable navigation if used in a stand-alone mode. A generic multi-sensor fusion approach is presented. This approach builds the navigation mechanization around a self-contained inertial navigator, which is used as a core...

This poster presents a novel way to represent user navigation in XML retrieval using collection statistics from XML summaries. Currently, developing user navigation models in XML retrieval is costly and the models are specific to collected user assessments. We address this problem by proposing summary navigation models which describe user navigation in terms of XML summaries. We develop our pro...

 Successful navigation for unmanned autonomous vehicles (UAVs) depends on the ability of the navigation algorithm to fuse data from disparate sensor systems into a single direction command in real time, taking into account the various and sometimes contradictory goals of the UAV. In this paper, a fuzzybased method of sensor data analysis, fusion, and navigation is investigated. The results of ...

Individual differences have been shown to lead to different navigation styles. In this paper we present a pilot study that aims at finding predictors for users’ vulnerability to experience disorientation that can be gathered unobtrusively and in real-time. We identified two navigation styles that we called flimsy navigation and laborious navigation that together predict users’ perceived disorie...

Acurrent-aided inertial navigation framework is proposed for small autonomous underwater vehicles in long-duration operations (>1 h), where neither frequent surfacing nor consistent bottom tracking is available. We instantiate this concept through mid-depth underwater navigation. This strategy mitigates deadreckoning uncertainty of a traditional inertial navigation system by comparing the estim...

INS/GPS integrated navigation system is studied in this paper for the hypersonic UAV in order to satisfy the precise guidance requirements of hypersonic UAV and in response to the defects while the inertial navigation system (INS) and the global positioning system (GPS) are being applied separately. The information of UAV including position, velocity and attitude can be obtained by using INS an...

BACKGROUND Patient navigation has been an effective intervention to increase cancer screening rates. This study focuses on predicting outcomes of screening colonoscopy for colorectal cancer among African Americans using different patient navigation formats. METHODS In a randomized clinical trial, patients more than 50 years of age without significant comorbidities were randomized into three n...

The Global Positioning System (GPS) has made navigation systems practical for a number of land-vehicle navigation applications. Today, GPS-based navigation systems can be found in motor vehicles, farming and mining equipment, and a variety of other land-based vehicles (e.g., golf carts and mobile robots). In Section II of this paper, each of these applications is discussed, and the reader is in...

BACKGROUND Although surgical navigation reduces the rate of malpositioned acetabular cups in total hip arthroplasty (THA), its use has not been widely adopted. As a result of our perceived need for simple and efficient methods of navigation, we developed a mechanical navigation device for acetabular cup orientation. QUESTIONS/PURPOSES We assessed accuracy of cup orientation (mean error of cup...

1. INTRODUCTION Since the eighties constant augmentation of the demand on worldwide maritime transportation together with acute economical competition have increased the pressure on ship owners and commercial fleets. Crews are often reduced to a minimum and sometimes to even one officer of the watch in the deck. In order to counterbalance these negative effects on safety navigation, and to faci...