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In a wireless body area networks (WBAN) with integrated sensor hubs, the proposed MAC protocol is a TDMA-based schedule used in active superframe interleaving and beacon shifting defined by the IEEE 802.15.6 standard. It considers the human dynamics and traffic information to meet the different QoS requirements of each sensor, improve bandwidth utilization and reduces packet collisions within networks...
Real-time ridesharing systems have been investigated as a potential method for improving congestions in overloaded road networks. In this paper, we specifically investigate integrating dynamic road conditions (DRCs) such as traffic accidents into the ridesharing systems, as the DRCs will cause unexpected delays during the route planning phase. We propose to use the CRP framework due to its capability...
The most prominent advantage of software verification over testing is a rigorous check of every possible software behavior. However, large state spaces of concurrent systems, due to non-deterministic scheduling, result in a slow automated verification process. Therefore, verification introduces a large delay between completion and deployment of concurrent software. This paper introduces a novel iterative...
We consider the conditions of functioning of the distributed measurement system according to the strict schedule. The system consists of several local stations integrated into the computer network with the ring structure. Sensors of measurement system have different polling periods (polled with different frequencies) with frequencies ratios are natural numbers. Design method for the operation of that...
This paper considers the problem of joining a network of constrained IoT devices. We propose to take advantage of Singer Cyclic Difference Sets (S-CDS) for a joining scheme that results in low duty cycles and apply the proposed scheme to the joining problem in 802.15.4e TSCH networks. S-CDS distributes the active periods of nodes over time so that a joining node does not suffer from long scanning...
Balancing energy markets and imbalance mechanisms are pressing issues to provide flexibility for the electricity system to enable an efficient integration of volatile renewable energies. Because of the need for flexibility and shortterm (generation or demand) reaction to forecast errors of renewable generation, liquidity and market volume of short-term markets have significantly increased. In Austria,...
In the process of China's automated production, the upgrading and networking of old infrastructures becomes one of the key issues. With large quantity, numerous varieties and wide distribution, these infrastructures brings complex design work and high cost to network them into fieldbus, which greatly hamper the building of intelligent factories. This paper proposed an industrial-control solution to...
This article presents a way to solve Resource-Constrained Project Scheduling Problem with genetic algorithm and demonstrates the high relevance of metaheuristics for solution this type problem. Also shows various benchmarks with others heuristics. The benchmark performed compares directly to a relatively new heuristic and to several other works performed. The genetic algorithm together with the approach...
Maintenance of mine haul road generally use motor grader. Maintenance of haul road is needed because the surface of the haul road is designed without asphalt/concrete pavement and heavy loaded vehicles so that it has a short durability. Maintenance is done to keep the haul road in good service performance. Poor haul road performance will impact on increasing production costs and decreasing mine productivity...
Pakistani construction industry is flourishing rapidly in terms of infrastructure development due to large investment in this sector for past few years. However, construction delays are of major concern to project managers working in construction industry which leads to poor project performance or failure of the project. These delays are caused due to various external and internal factors. Risks involved...
Network management requires both awareness of the status of the network and the ability to manage key systems to maintain full network efficiency. OrderNet is an application layer protocol which rides within existing message sets to manage heterogeneous networks. This paper summarizes the analysis of alternatives performed that selected OrderNet as a promising technology for the monitoring, management,...
The WiseSkin project aims at creating artificial skin that allows human patients with prosthetic limbs to regain their sense of touch. The system in charge of transferring the tactile information is based on a wireless sensor network with stringent adaptability, latency, energy and rehability constraints. This paper proposes a communication protocol aimed at enabling the WiseSkin wireless sensor network...
This paper considers the transmission scene of multicasting hard deadline constrained prioritized (HDCP) packets via cellular links and D2D links. That is to say, each device with two wireless interfaces could receive HDCP packets from the base station (BS) and transmit or receive HDCP packets from other devices concurrently. In this transmission scene, we study the problem of maximizing the network...
In this paper, we consider the problem of two identical machines scheduling that jobs are processed under a grade of service (GoS) provision. The jobs arrive over time and the two machines can be idle at the same time only when all the jobs arrived are completed. To our best knowledge, this problem has never been studied so far. For the problem with objective makespan minimization, we prove that any...
We address the topology-aware job scheduling and placement problems on 3D torus-based high performance computing systems, with the objective of reducing system fragmentation. In our previous work, we proposed a job placement algorithm based on a local migration process, which aims at reducing the internal fragmentation due to using a convex prism shape for job allocation. However, HPC systems are...
Uncertainty takes different forms in air transportation systems. One form is demand uncertainty which is mainly due to the root cause of aircraft departing in deviated time slots. This can lead to severe consequences, including capacity violation in air routes. The current Air Traffic Flow Management (ATFM) literature does not consider demand uncertainty in flight scheduling. However, in reality,...
Vehicle scheduling plays a crucial role in public transport bus companies. An efficient schedule can help bus companies reduce operating costs while being an essential guide to daily operations. However, the precompiled schedule is usually hard to be adhered to in practice due to the diversity of traffic and driving conditions. Therefore, dynamic vehicle scheduling becomes an important supplement...
This paper concentrates on the nonlinear filtering for systems with event-triggered data transmission and random time delays. A stochastic event-triggered sensor schedule is introduced to reduce the excessive measurements, which achieves a lower communication rate with a good estimation performance. The time delay is modeled by a Poisson distribution, and a D-length buffer is used to retrieve partly...
Packet routing is important for Vehicular Delay Tolerant Networks (VDTNs).Opportunistic routing algorithms based on historical records are insuciently accurate in forwarder selection due to movement randomness of vehicles. Trajectory-based routing algo- rithms tackle vehicle movement randomness but cannot be directly used in VDTNs due to the dependence on APs. In this paper, we develop a distributed...
Coded caching is a technique that promises huge reductions in network traffic in content-delivery networks. However, the original formulation and several subsequent contributions in the area, assume that the file requests from the users are synchronized, i.e., they arrive at the server at the same time. In this work we formulate and study the coded caching problem when the file requests from the users...
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