Controller area network (CAN) is a prioritybased bus that supports real-time communication. Existing schedulability analysis for the CAN bus is peformed at the design stage, by assuming that all message information is known in advance. However, in pratice, the CAN bus may run in a dynamic environment, where complete specifications may not be available at the design stage and operational require...

The Controller Area Network (CAN) is being widely used in real-time control applications such as automobiles, aircraft, and automated factories. In this paper we present the mixed traffic scheduler (MTS) for CAN, which provides higher schedulability than fixed-priority schemes like deadlinemonotonic (DM) while incurring less overhead than dynamic earliest-deadline (ED) scheduling. We also descr...

The current semiconductor technology allows integration of all components onto a single chip called system-on-chip (SoC), which scales down the size of product and improves the performance. When a system becomes more complicated, testing process, such as test scheduling, becomes more challenging. Recently, peak power has also been considered as constraints in the test scheduling problem. Beside...

Switching activity and schedule length are the two of the most important factors in power dissipation. This paper studies the scheduling problem that minimises both schedule length and switching activities for applications with loops on multiple functional unit architectures. We show that, to find a schedule that has the minimal switching activities among all minimum latency schedules with or w...

In this paper, we propose two novel memory access scheduling algorithms: (1) Compute-Phase Prediction and (2) Writeback-Refresh Overlap. Compute-Phase Prediction is a fine-grain thread-priority prediction technique. It estimates the execution phase of the thread, whether computeintensive or memory-intensive with fine granularity, and gives higher priority to the read requests from the thread in...

We consider the school bus routing and scheduling problem, where transportation demand is known and bus scheduling can be planned in advance. We present a comprehensive methodology designed to support the decision of practitioners. We first propose a modeling framework where the focus is on optimizing the level of service for a given number of buses. Then, we describe an automatic procedure gen...

In order to optimize the bus departure time considering uncertain factors, this paper constructed an bi-level programming model for frequency and scheduling of a line. The uncertainty passenger arrival operation were taken into account, combined with actual conditions. Nanchang 207 line was as example in morning peak hour. optimal hour is 12 times. overall index value route’s non-uniform during...

Twomajor trends can be observed in modern system-on-chip design: first the growing trend in system complexity results in a sharp increase of communication traffic on the on-chip communication bus architectures. The second trend in technology scaling indicates that the wires are getting thinner and results in increment of wire delay. These trends, taken together, designing on-chip communication ...

bus accident is a major health problem for bus drivers.  to identify the risk factors involved in bus accidents and to design a model showing the relation between the risk factors and bus driver’s health status, 219 bus drivers who worked for travel agencies in two areas of west and central iran were enrolled into this study.  we used a questionnaire to gather information regarding both the bus...

In this paper, the performance of an Electronic Commerce server, i.e. a system running Electronic Commerce applications, is evaluated in the case of shared-bus multiprocessor architecture. In particular, we focused on the memory subsystem design. We have analyzed the common case of a system using the MESI coherence protocol, for maintaining coherency among the processor private caches. We have ...