One of the most frequently studied problems in the context of information dissemination in communication networks is the broadcasting problem. In this paper, we study the following robust, simple, and scalable randomized broadcasting protocol: At some time t an information is placed at one of the nodes of a graph G, and in the succeeding steps, each informed node choses one of its neighbors in ...

This paper proposes both an urban mobility model for OPNET and a low latency handover mechanism for Mobile IPv4. The mobility model uses street data to navigate the nodes in a city: (1) semi-randomly according to street precedence level and a configurable bias towards direction, and (2) different modes of waypoint navigation. When roaming across WiFi access points, the mobile nodes need to cond...

We solve the problem of robot path planning using Dynamic Programming (DP) designed to perform well in case of a sudden path blockage. A conventional DP algorithm works well for real time scenarios only when the update frequency is high i.e. changes can be readily propagated. In case updates are costly, for a sudden blockage the robot continues moving along the wrong path or stands stationary. ...

Current efficient planners employ an informed search guided by a heuristic function that is quite expensive to compute. Thus, ordering nodes in the search tree becomes a key issue, in order to select efficiently nodes to evaluate from the successors of the current search node. In a previous work, we successfully applied a CBR approach to order nodes for evaluation, thus reducing the number of c...

Beam searches are a very effective algorithm for solving problems that prove intractable to complete algorithms like weighted A* and greedy search. Unfortunately, the inadmissible pruning that is the hallmark of a beam search makes the algorithm incomplete. Existing complete extensions to beam search expand pruned nodes systematically according to generation order. Selecting pruned nodes to exp...

introduction: size of axillary lymph nodes can be a predictor for breast abnormalities. the agents in the antiperspirants such as aluminum were observed in the breast biopsy of individual with abnormalities and antiperspirants usage. in this study, the relation between using antiperspirants and the size of axillary lymph nodes were evaluated in iranian women. methods: in this study, 120 women w...

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In the management of complex medical cases such as a multifetal pregnancy, knowledge of the ethical and legal implications is important, alongside having competent medical skills. This article reviews these principles and applies them to scenarios of multifetal pregnancy and fetal reduction. Such a discussion is not solely theoretical, but is also relevant to clinical practice. The importance o...