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This manuscript deals with the reliability and availability analysis of a business equipment class used in a modern enterprise context aiming at the analysis of production breakdown reduction. In order to prevent a failure, reliability and availability analysis either of a instrument or of a product, assume a central role. This paper analyzes a specific case in a diagnostic pharmaceutical environment...
Being sustainable is now a source of competitive advantage and a question of survival for the supply chains. Indeed, several researches were conducted about this topic by covering several aspects such as the design of the supply chains, their optimization and the evaluation of their performance. However, concerning the performance evaluation of the sustainable supply chain, the models suggested are...
Optimisation during the design of large manufacturing systems is a key issue. An adequate modelling formalism to express the intricate interleaving of competition and cooperation relationships is needed first. Moreover, robust and efficient optimisation techniques are necessary. This paper presents an integrated tool for the automated optimisation of DEDS, with application to manufacturing systems...
From the perspective of value chain, this article builds enterprise performance evaluation index system at aspects of both internal and external value chain. Based on this, value chain-embedded enterprise performance multistage fuzzy comprehensive evaluation model is further built. The model is used for empirical analysis, and it is proved that value chain-optimized enterprise performance multistage...
Crowdsourcing-based video service systems, e.g., Thunder Crystal, are novel content distribution platforms composed by a large number of agent devices, acting like miniservers. Most agents are normal Internet users who would like to earn rewarded cash by uploading content through their devices. Compared with CDN, the bandwidth cost is much cheaper; while compared with Peer-to-Peer(P2P), the bandwidth...
The Enhanced Distributed Channel Access (EDCA) mechanism supports some degree of service differentiation between different types of classes of service, referred to as access categories. However virtual collision management is a penalizing process, it can induce quality of service degradation. We propose in this paper a mathematical modelling based on a two-dimension Markov chain and overviews the...
Moore's Law has entered a new frontier as the incessant progress of device scaling continues to excel in 10nm and beyond. As the physical dimension of devices and interconnect are being shrunk, the design rules and the design flow, for both ASIC and custom designs, face unprecedented complexity. Hence, common IC design practice can no longer separate the design and the process fabrication indifferently...
We consider a special case of the M/G/ $\infty$ traffic process, named as Poisson Lomax Burst Process (PLBP) , where the burst lengths follow the Lomax distribution. We illustrate its advantage in modelling Internet traffic flow sizes, particularly, its ability to capture a large number of small flows. We provide two approximations based on analytical and fast simulation methods for the overflow...
The Long Term Evolution-Advanced (LTE-A) cellular network is designed for human-to-human (H2H) communication. When a large number of machine-tomachine (M2M) devices are trying to access the network simultaneously, it leads to a low random access (RA) successful rate and high congestion problem, which may cause the waste of radio resources, packet loss, latency, extra power consumption, and the worst,...
We present and analyze an Electric Vehicle (EV) charging management model for a fast charging station network in a smart grid environment. The proposed model considers a charging station network that provides service to multiple EV charging-classes. The basic feature of the proposed model is when EVs are blocked by their preferred station due to the unavailability of charging outlets, they are prompted...
In this paper, the methodology for performance assessment of five different detection techniques from spectrum sensing perspective in cognitive radio networks is proposed and implemented using the realistic implementation oriented model (R-model). The signal detection in CR networks under a non-parametric multisensory detection scenario is considered for performance comparison under the presence of...
By analyzing the difference of protocol construction angle and equipment processing angle between VPLS whose core is MPLS and VPLS two-layer networking model whose core network in IP network, this paper has proposed that PE equipment performance is easy to overload because VPLS two-layer networking model based on IP costs a large number of resource when constructing GRE or GREoIP sec. It has gathered...
Most of today's performance analysis tools are focused on issues occurring at multi-core and communication level. However there are several reasons why an application may not correctly behave in terms of performance at the core level. For a significant part, loops in industrial applications are limited by the quality of the code generated by the compiler and do not always fully benefit from the available...
Machine-Type-Communication (MTC) is a key enabler for a variety of novel smart systems, such as smart grid, eHealth, Intelligent Transport System (ITS), and smart city, opening the area of the cyber physical systems. These systems may require the use of a huge number of MTC devices, which will put a great pressure on the whole network, i.e. Radio Access Network (RAN) and Core Network (CN) parts, resulting...
This paper focuses on modelling and performance evaluation of an Intermodal Freight Transport Terminal (IFTT), the rail-road inland terminal of a leading Italian intermodal logistics company. The IFTT is regarded as a discrete event system and is modelled in a timed Petri net framework. By means of suitable performance indices, we simulate the Petri net model and evaluate the operational performance...
In mobile picocellular network topologies a very critical issue is the handoff procedure in conjunction with the corresponding packet loss, due to the limited overlapping areas between adjacent cells. Handoffs and packet loss are more frequent and even more critical in picocellular vehicular networks, since the aforementioned limitation is combined with the high velocities of the mobile end-users...
Wireless Sensor Network (WSN) is consisting of independent and distributed sensors to monitor physical or environmental conditions, such as temperature, sound, pressure, etc. Routing protocols represent an essential aspect of the performance of mobile wireless networks. This paper presents a comparative analysis between several routing algorithms and their impact on the performance of WSN. The performance...
The IEEE 802.15.6 standard for wireless body area network (WBAN) defines two contention-based channel access schemes: slotted ALOHA and carrier sense multiple access with collision avoidance (CSMA/CA) using an alternative binary exponential backoff procedure. The standard supports quality of service (QoS) differentiation through user priorities and access phases. In this study, we develop an analytical...
In this study, the discrete-time performance of BLUE algorithms under bursty and correlated traffics is analyzed using two-state Markov-modulated Bernoulli arrival process (BLUE-MMBP-2). A two-dimensional discrete-time Markov chain is used to model the BLUE algorithm for two traffic classes, in which each dimension corresponds to a traffic class and the parameters of that traffic class. The MMBP is...
Multifunction vehicle bus (MVB) which obeyed to IEC 61375-1 standard is implied inside the train vehicle as international standard. The measurement index of MVB network dynamic performance including network efficiency, network utilization and network throughput is put forward in this paper. A simulation model based on matlab\simulink is built to evaluate and analyze MVB network dynamic performance...
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