This paper is concerned with endgame guidance and relative navigation of strategic missiles equipped with divert thrusters to intercept nonmaneuvering reentry vehicles. The paper has three objectives: 1) demonstrate superiority of predictive guidance to pulsed proportional navigation guidance; 2) devise compensation for a onesample delay in arrival of line-of-sight (LOS) angle measurements at K...

In previous work we have proposed a data mining model to capture user web navigation patterns, which models the navigation sessions as a hypertext probabilistic grammar. The grammar's higher probability strings correspond to the user preferred trails and an algorithm was given to nd all strings with probability above a threshold. Herein, we propose a heuristic aimed at nding longer trails compo...

In previous work we have proposed a data mining model to capture user web navigation patterns, which models the navigation sessions as a hypertext probabilistic grammar. The grammar's higher probability strings correspond to the user preferred trails and an algorithm was given to nd all strings with probability above a threshold. Herein, we propose a heuristic aimed at nding longer trails compo...

In previous work we have proposed a data mining model to capture user web navigation patterns which models the navigation ses sions as a hypertext probabilistic grammar The grammar s higher prob ability strings correspond to the user preferred trails and an algorithm was given to nd all strings with probability above a threshold Herein we propose a heuristic aimed at nding longer trails compose...

With the continuous development of the industrialization process, the countries all over the world gradually appeared lack of agricultural labor force and aging phenomenon, which was especially prominent in developed countries. However the agricultural robot with high operating efficiency, high qualities of work will play an increasingly important role in future agricultural production. Robot n...

BACKGROUND We evaluated the efficacy of a Chicago-based cancer patient navigation program developed to increase the proportion of patients reaching diagnostic resolution and reduce the time from abnormal screening test to definitive diagnostic resolution. METHODS Women with an abnormal breast (n = 352) or cervical (n = 545) cancer screening test were recruited for the quasi-experimental study...

This article would study batch and recursive methods that used in terrain navigation systems. Terrain navigation has a lot ofdisadvantages and so researchers have been studied on different method of aided navigation for many years. Therefore, more types of aided navigation systems were introduced with advantages and disadvantages in terms of practical and theoretical. One of the main ideas for ...

in this paper, we present the results of a hierarchical slam/gps/ins/wlfp sensor fusion to be used in navigation system devices. due to low quality of the inertial sensors, even a short-term gps failure can lower the integrated navigation performance significantly. in addition, in gps denied environments, most navigation systems need a separate assisting resource, in order to increase the avail...

Abstract In this paper, we deal with the lumpability approach to cope state space explosion problem inherent computation of stationary performance indices large stochastic models. The method is based on a aggregation technique and applies Markov chains exhibiting some structural regularity. Moreover, it allows one efficiently compute exact values when model actually lumpable. notion quasi-lumpa...

Compared with the Global Navigation Satellite System (GNSS), asynchronous pseudolite (PL) navigation system does not provide corrections for frequency deviation between PL signals. To realize precise positioning, a reference receiver is utilized to reduce effect of PLs via differential method using carrier phase measurements. However, there exists time user and receivers due their clocks. With ...