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Internet of vehicles (IoVs) emerges as a promising technology to facilitate vehicular wireless communication by approving vehicle-to-everything (V2X) services for intelligent transportation systems including vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I) and vehicle-to-pedestrian (V2P) services. V2V networks have been rapidly developed to support short distance data transmission among vehicles...
The delay time model is typically used to optimize an inspection scheme. A challenging issue with this model is that the exact defect initiation time and failure time are often not available. However, it is possible to build a delay time model for the situation where the degradation process has a degradation free stage. In this paper, we develop a hybrid approach to model a delay time model based...
An important, but often neglected, part of any sound simulation study is that of modeling each source of system randomness by an appropriate probability distribution. We first give some examples of data sets from real-world simulation studies, which is followed by a discussion of two critical pitfalls in simulation input modeling. The two major methods for modeling a source of randomness when corresponding...
In case of numerous loops control engineers need fast and accurate method finding out loops with the poorest control quality. There exits several measures however, industrial practice reveals their deficiencies. Some of them require introduction of external disturbance into the process (like the step test) that in many cases is considered as a risk or threat. The other group of automatic approaches...
The present study is aimed to study the delay that arises in automobile spare parts import system. This is a case study of FIAT dealership, Batas Brothers Motors Pvt. Ltd (BBMPL) based on import of Nepal-India custom. Study includes comparative research design of FIAT general import model, principal standard import model and Database Management System (DBMS) based import model. Input data taken for...
Vehicular environments impose stringent requirements on wireless communication systems due to their inherent feature of being highly dynamic in nature. Vehicular applications cannot tolerate long access delays to disseminate their messages in order to communicate with other neighboring nodes, or with the infrastructure units. Moreover, from safety point of view, these applications demand high reliability...
We propose a concept drift detection method utilizing statistical change detection in which a drift detection method and the Page-Hinkley test are employed. Our method enables users to annotate clustering results without constructing a model of drift detection for every input. In our experiments using synthetic data, we evaluated our proposed method on the basis of detection delay and false detection,...
We develop a mixture procedure to monitor parallel streams of data for a change-point that causes gradual change of a subset of data streams. We model the gradual change as a change in the trends of the affected data streams. Observations are assumed initially to be independent standard normal random variables with zero mean. After a change-point the observations in a subset of the streams of data...
This paper explores the impact of communication latency (time delay) on path following for a teleoperated mobile robot. In [1] Vozar developed a human steering model capturing the effects of latency on teleoperated driving performance and introduced the idea of equating path following performances under variable latency to an equivalent constant latency. We repeat Vozar's user experiments on a higher...
Device-to-Device (D2D) communications are planned to become an indispensable part of future mobile networks. A lot of attention has been paid to this new communication paradigm, due to the important benefits it brings for both cellular operators and end-users. Standardization efforts towards enabling D2D connections have started in Release 12 of the Long Term Evolution-Advanced standard and are expected...
Providing an efficient and scalable VANET multicast routing has multiple issues due to its highly dynamic topology, the high mobility, and change trajectory On the other hand, mobility models represent real world scenarios and according that issues above, we need to evaluate shortest path performance in the mobility models using random Dijkstra algorithm for IEEE 1609.4 standard. In this paper, we...
An analytical model is proposed to improve the performance of emergency message broadcast in VANET that supports both highly dense and sparse traffic conditions. In this paper we propose (i)IEEE 802.11p WAVE mode, that reduces the connection setup overhead (ii)priority schemes for three levels of safety service (iii)D-FPAV congestion control algorithm that supports both traffic & non-traffic situations...
An important, but often neglected, part of any sound simulation study is that of modeling each source of system randomness by an appropriate probability distribution. We first give some examples of data sets from real-world simulation studies, which is followed by a discussion of two critical pitfalls in simulation input modeling. The two major methods for modeling a source of randomness when corresponding...
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