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In the open source community such as GitHub, developers usually need to find projects similar to their work, with the aim to reuse their functions and explore ideas of features that could be possibly added into their project at hand. Traditional text search engine can help detect similar resources. However, it is difficult for developers to use in open source community because a few query words cannot...
In this paper, we implemented OpenFlow scheduled bundle in the Open vSwitch software switch and evaluated its performance in SDN testbed networks under different scenarios. The scheduled bundle is a very new mechanism proposed in the OpenFlow protocol for achieving consistent updates among multiple SDN switches. However, this feature has not been supported in any hardware SDN switches or any software...
Vehicle Management System (VMS) is onboard real-time network, which ensures the flight safety and economy by scheduling and managing the onboard resources. With the help of computers, local area network (LAN), simulation software and real-time operation system, we build a distributed computer simulation platform to simulate this onboard network. In this paper, we present a Simulink/RTX/Reflective...
In this paper, we propose the China-US international data placement laboratory (iDPL) based on an inter-continental testbed for data placement research. iDPL is able to support various data placement research due to its scalability and flexibility in deploying the experiments in the real network environment. The core design of iDPL leverages reliable workflow management and lightweight I/O protocol...
Middleboxes (MBs) are ubiquitous in modern data centre (DC) due to their crucial role in implementing network security, management and optimisation. In order to meet network policy's requirement on correct traversal of an ordered sequence of MBs, network administrators rely on static policy based routing or VLAN stitching to steer traffic flows. However, dynamic virtual server migration in virtual...
The SyncBoard is a reconfigurable sensor timing board that accurately records the Time of Validity (TOV) from sensors, while acting as a protocol conversion tool. It is intended to be usable by people without expertise in hardware development. To allow accurate timing, the SyncBoard has a highperformance microcontroller with a 32-bit timer clock running at a maximum of 100 MHz. By capturing the TOV...
IoT tends to focus on a variety of wireless technologies and approaches to enable communication over the air, however, powerline networking may also be considered as an alternative reliable and robust signaling option. Methods and devices described in this letter form the basis of modern communication system. A powerline alternative deployment covering Hardware, Embedded System Architecture, proposed...
This paper presents and characterizes the Princeton Application Repository for Shared-Memory Computers (PARSEC), a benchmark suite for studies of Chip-Multiprocessors (CMPs). Previous available benchmarks for multiprocessors have focused on high-performance computing applications and used a limited number of synchronization methods. PARSEC includes emerging applications in recognition, mining and...
As computer systems increase in size and complexity, bugs become ever subtler and more difficult to detect and diagnose. A bug could exist at different layers of computer systems (e.g., applications, shared libraries, file systems, device firmware), or could be caused by the incompatibility among layers. In many cases, bugs would require a very specific combination of events to be triggered and are...
With the development of the technology, life is filled with increasing information equipment. When they work, a great deal of information will be radiated. For the leaked information, an interception system is built with USRP (Universal Software Radio Peripheral), and the line synchronization signal was extracted with a method called cepstrum. Compared with the method of autocorrelation, the new method...
In the past decade, urban traffic has increased tremendously. As a result, the urban population has to invest more time in traveling. Increased road traffic results in an increased number of road accidents and more consumption of fuel, thus wasting energy. Hence for solving this issue, this paper proposes a traffic signal synchronization system which takes real time traffic signal data as input and...
In recent times MOOCs has become a technology enabled platform which allows delivery of content in locations geographically separated out. In Birla Institute of Technology and Science (BITS), Pilani the EdX platform has been successfully used to deliver content over multiple campuses namely Pilani Campus, Goa Campus, and Hyderabad Campus. We present in this paper challenges faced in implementing this...
Hardware in-the-loop simulation test has the advantage of live test, digital simulation test, which can build the lifelike test environment. This kind of test can carry through repeated test of multi-sample. The key technique of the hardware in-the-loop simulation test is real-time algorithmic and communication technology. In this paper, based on reflective memory network, the design for hardware...
Traditional cellular automata (CA) assume the presence of a single global clock regulating the update of all their cells. When this assumption is dropped, cells can update with different speeds, thus increasing the difficulty of solving synchronization problems. Here we solve the traditional and the generalized Firing Squad Synchronization Problem in dimension two and higher on multiple updating cycle...
Data collision in a channel leads to channel synchronization problem, which may arise due to the existence of hidden terminal node. CSMA, TDMA, ALOHA and many more protocols provide help to channel synchronization. Semaphore is a tool which deals with synchronization problem and can be used to provide channel synchronization in a communication link. In this paper a hybrid CSMA/CA-Semaphore approach...
Real time is one of fundamental characteristics for hardware in the loop simulation (HILS). In this paper, we adopt the fiber reflective memory net (RMN) strategy to ensure the real-time data transmission and propose a clock synchronization method based on reflective memory card (RFM) interruption to make the simulation process stable. The character of RFM is real-time, delay determinacy and reliability...
The traditional auto-reclosing method in relaying cannot meet the requirements of the distribution network with small hydropower in case of faults. In order to provide reliable guarantee for safe operation of transmission line, on the basis of the improvement measures by the reclosing device in the practical engineering, a reclosing device adapted to synchronization line of small hydropower station...
Social cognition is the study of how people interact with each other in a social situation. An effective interaction would require higher degree of cognitive involvement between the participants and consequently, an enhanced synchrony between their neural mechanisms. In this study, twelve pairs of subjects interacted with each other via a cognitively engaging experimental paradigm in which they either...
Users of computer systems wish to keep their personal data safe, updated, fair and accessible by other terminals, like personal computers, smart phones, portable consoles and PDAs. To perform these activities, one technology has become popular in our daily lives: data synchronization. Companies that provide this kind of service must do it with the greatest availability possible since their clients...
PWCS (Probabilistic Write / Copy-Select) is a new kind of lock-free synchronization mechanism with wait-free characteristics proposed by Nicholas Mc Guire at the 13th real-time Linux workshop, which utilizes the inherent randomness of the modern computer systems. It aims at addressing the multi-reader - single-writer problem in Linux. Based on the original label-based PWCS, we propose a hash-based...
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