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Design of fault tolerant majority voter for error resilient TMR targeting micro to nano scale logic 针对微纳米级逻辑的容错TMR容错多数投票人设计
Pub Date : 2020-03-13 DOI: 10.1504/ijcse.2020.10027618
Mrinal Goswami, Subrata Chattopadhyay, Shiv Bhushan Tripathi, B. Sen
The shrinking size of transistors for satisfying the increasing demand for higher density and low power has made the VLSI circuits more vulnerable to faults. Therefore, new circuits in advanced VLSI technology have forced designers to use fault tolerant techniques in safety-critical applications. Also, the presence of some faults (not permanent) due to the complexity of the nanocircuit or its interaction with software results in malfunctioning of circuits. The fault tolerant scheme, where majority voter plays the core role in triple modular redundancy (TMR), is being implemented increasingly in digital systems. This work targets to implement a different fault tolerant scheme of majority voter for the implementation of TMR using quantum-dot cellular automata (QCA), viable alternative nanotechnology to CMOS VLSI. The fault masking ability of various voter designs has been analysed in details. The fault masking ratio of the proposed voter (FMV) is 66% considering single/multiple faults. Simulation results establish the validation of proposed logic in QCA which targets nano-scale devices. The proposed logic is also suitable for conventional CMOS technology, which is verified with the Cadence tool.
为了满足越来越高的密度和低功耗的要求,晶体管的尺寸不断缩小,使得VLSI电路更容易出现故障。因此,先进VLSI技术的新电路迫使设计人员在安全关键应用中使用容错技术。此外,由于纳米电路的复杂性或其与软件的相互作用而导致的一些故障(非永久性)的存在导致电路故障。以多数投票人为核心的三模冗余容错方案在数字系统中得到越来越多的应用。这项工作的目标是使用量子点细胞自动机(QCA)实现不同的多数选民容错方案,这是CMOS VLSI的可行替代纳米技术。详细分析了各种投票器设计的故障掩蔽能力。考虑单/多故障时,所提出的选民(FMV)的故障掩蔽率为66%。仿真结果验证了所提逻辑在纳米级器件QCA中的有效性。所提出的逻辑也适用于传统的CMOS技术,并通过Cadence工具验证了这一点。
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引用次数: 2
Event-triggered fault estimation for stochastic state-delay systems against adversaries with application to a DC motor system 随机状态延迟系统的事件触发故障估计及其在直流电机系统中的应用
Pub Date : 2020-03-13 DOI: 10.1504/ijcse.2020.10027616
Yunji Li, Yi Gao, Quansheng Liu, Li Peng
This paper is concerned with the problem of fault estimation for stochastic state-delay systems subject to adversaries under an event-triggered data-transmission framework. An adversarial fault estimator is designed for remote state and fault estimation simultaneously. Furthermore, a sufficient condition is provided for exponential stability in the mean-squared of the proposed event-triggered fault estimator. The corresponding event-triggered sensor data transmission scheme is to reduce the overall communication burden. Finally, an application example on a DC motor system is presented and the benefits of the obtained theoretical results are demonstrated by comparative experiments.
研究了事件触发数据传输框架下随机状态延迟系统的故障估计问题。设计了一种对抗性故障估计器,可以同时进行远程状态估计和故障估计。此外,给出了事件触发故障估计器均方指数稳定的充分条件。相应的事件触发传感器数据传输方案是为了减轻整体通信负担。最后给出了直流电机系统的应用实例,并通过对比实验验证了所得理论结果的有效性。
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引用次数: 1
Experimental investigation and CFD simulation of power consumption for mixing in Gyro Shaker 陀螺激振器混合功率消耗的实验研究与CFD模拟
Pub Date : 2020-03-06 DOI: 10.1504/ijcse.2020.10027422
P. A. A. Samad, P. R. Shalij
The better mixing of ingredients is the key to improving the quality of the process in the manufacturing of several products. Gyro Shaker is a dual rotation mixer commonly used for mixing highly viscous fluids. In this work, CFD simulation for the multiphase mixing of Gyro Shaker is carried out for obtaining numerical solutions. Simulations of three different mixing models namely Eulerian granular model, mixture model and volume of fluid (VOF) model are compared with each other. Reynolds number and power number based on characteristic velocity were derived for the Gyro Shaker. Experiments were conducted to validate the mixing power by the simulation using torque method and viscous dissipation method. The viscous dissipation method for mixing power demonstrates a low deviation from the experiment data than torque method. Among the three simulation models, the multiphase mixture model shows the minimum variation of the experimental data. A comparison of the flow field of the different mixing models is also carried out.
在几种产品的制造过程中,原料的更好混合是提高工艺质量的关键。陀螺激振器是一种双旋转混合器,通常用于混合高粘性流体。本文对陀螺激振器的多相混合进行了CFD模拟,得到了数值解。对欧拉颗粒模型、混合模型和流体体积模型三种不同的混合模型进行了仿真比较。推导了陀螺激振器的雷诺数和基于特征速度的功率数。采用扭矩法和粘滞耗散法对混合功率进行了仿真验证。与扭矩法相比,粘性耗散法计算混合功率与实验数据的偏差较小。在三种模拟模型中,多相混合模型的实验数据变化最小。对不同混合模式下的流场进行了比较。
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引用次数: 0
An internet-of-things-based security scheme for healthcare environment for robust location privacy 针对医疗保健环境的基于物联网的安全方案,可实现强大的位置隐私
Pub Date : 2020-03-06 DOI: 10.1504/ijcse.2020.10027435
A. Tewari, B. Gupta
Recently, various applications of internet of things have been developed for the healthcare sector. Our contribution is to provide a secure and low-cost environment for the IoT devices in healthcare. The main goal is to make patients' lives easier and comfortable by providing them with more effective treatments. Nevertheless, we also intend to address the issues related to location privacy and security due to the deployment of IoT devices. We have proposed a very simple mutual authentication protocol, which provides strong location privacy by using one way hash, pseudo random number generators and bitwise operations. Strong location privacy is a key factor while ensuring healthcare security. We can enforce this property by making sure that tags in the network are indistinguishable and the protocol ensures forward secrecy. The security strength of our protocol is verified through a formal proof model for location privacy.
最近,物联网在医疗保健领域的各种应用被开发出来。我们的贡献是为医疗保健领域的物联网设备提供一个安全、低成本的环境。主要目标是通过为患者提供更有效的治疗,使他们的生活更轻松、更舒适。尽管如此,我们也打算解决由于部署物联网设备而导致的位置隐私和安全问题。我们提出了一个非常简单的相互认证协议,该协议通过使用单向哈希、伪随机数生成器和位操作提供了强大的位置隐私。强大的位置隐私是确保医疗安全的关键因素。我们可以通过确保网络中的标签不可区分和协议确保前向保密来强制执行此属性。通过位置隐私的形式化证明模型验证了协议的安全强度。
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引用次数: 9
The key user discovery model based on user importance calculation 基于用户重要性计算的关键用户发现模型
Pub Date : 2020-03-06 DOI: 10.1504/ijcse.2020.10027436
Xiangfeng Luo, Lei Zhang, Yawen Yi, Ruirong Xue, D. Jiang
Recently, more and more users publish their views on events in social media. Identifying influential users in social media can help to analyse the impact of hot events or enterprise products in the real world. The existing mainstream methods are based on attribute analysis or network analysis. But attribute-based methods only select relatively simple characteristics without examining the event targeted properties; the network-based methods only use the user behaviour relation or the content association relation to build a network without considering the user attributes. Therefore, they cannot effectively calculate the user importance. This paper proposes a multi-angle user importance calculation method with event-specificity. In our method, the overall importance of a user is measured by taking the four levels within the user layer, the fan layer, the microblog layer, and the event layer into account. Experimental results show that our method can effectively calculate the importance of users.
最近,越来越多的用户在社交媒体上发表他们对事件的看法。识别社交媒体中有影响力的用户有助于分析热点事件或企业产品在现实世界中的影响。现有的主流方法是基于属性分析或网络分析。但是基于属性的方法只选择相对简单的特征,而不检查事件目标属性;基于网络的方法仅使用用户行为关系或内容关联关系来构建网络,而不考虑用户属性。因此,他们不能有效地计算用户的重要性。提出了一种具有事件特异性的多角度用户重要性计算方法。在我们的方法中,通过考虑用户层、粉丝层、微博层和事件层中的四个层次来衡量用户的整体重要性。实验结果表明,该方法可以有效地计算出用户的重要性。
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引用次数: 2
Collaborative filtering-based recommendation system for big data 基于协同过滤的大数据推荐系统
Pub Date : 2020-03-06 DOI: 10.1504/ijcse.2020.10027426
Jian Shen, Tianqi Zhou, Lina Chen
Collaborative filtering algorithm is widely used in the recommendation system of e-commerce website, which is based on the analysis of a large number of users' historical behaviour data, so as to explore the users' interest and recommend the appropriate products to users. In this paper, we focus on how to design a reliable and highly accurate algorithm for movie recommendation. It is worth noting that the algorithm is not limited to film recommendation, but can be applied in many other areas of e-commerce. In this paper, we use Java language to implement a movie recommendation system in Ubuntu system. Benefiting from the MapReduce framework and the recommendation algorithm based on items, the system can handle large datasets. The experimental results show that the system can achieve high efficiency and reliability in large datasets.
协同过滤算法在电子商务网站推荐系统中得到了广泛的应用,它是基于对大量用户历史行为数据的分析,从而挖掘用户的兴趣,向用户推荐合适的产品。本文主要研究如何设计一种可靠、高精度的电影推荐算法。值得注意的是,该算法不仅局限于电影推荐,还可以应用于电商的许多其他领域。本文采用Java语言在Ubuntu系统上实现了一个电影推荐系统。得益于MapReduce框架和基于项的推荐算法,系统可以处理大型数据集。实验结果表明,该系统能够在大数据集上实现较高的效率和可靠性。
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引用次数: 29
An evolutionary algorithm for finding optimisation sequences: proposal and experiments 寻找优化序列的进化算法:建议与实验
Pub Date : 2020-03-06 DOI: 10.1504/ijcse.2020.10027432
João Fabrício Filho, Luis Gustavo Araujo Rodriguez, A. F. Silva
Evolutionary algorithms are metaheuristics for solving combinatorial and optimisation problems. A combinatorial problem, important in the context of software development, consists of selecting code transformations that must be utilised by the compiler while generating the target code. The objective of this paper is to propose and evaluate an evolutionary algorithm that is capable of finding an efficient sequence of optimising transformations, which will be used while generating the target code. The results indicate that it is efficient to find good transformation sequences, and a good option to generate databases for machine learning systems.
进化算法是解决组合和优化问题的元启发式方法。组合问题在软件开发的上下文中很重要,它包括选择编译器在生成目标代码时必须使用的代码转换。本文的目的是提出并评估一种进化算法,该算法能够找到一个有效的优化转换序列,该序列将在生成目标代码时使用。结果表明,该方法可以有效地找到良好的转换序列,是机器学习系统生成数据库的一个很好的选择。
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引用次数: 0
Multi-keywords carrier-free text steganography method based on Chinese Pinyin 基于汉语拼音的多关键词无载波文本隐写方法
Pub Date : 2020-03-06 DOI: 10.1504/ijcse.2020.10027425
Yuling Liu, Jiao Wu, Guojiang Xin
By combining big data with the characteristics of steganography, carrier-free steganography was proposed to resist all the steganalysis attacks. A novel method named multi-keywords carrier-free text steganography method based on Chinese Pinyin is introduced in this paper. In the proposed method, the hidden tags are selected from the Pinyin combinations of two words. In the process of information hiding, the part of speech (POS) is used for hiding the number of keywords. Also, the redundancy of hidden tags in extraction process is eliminated by ensuring the uniqueness of each hidden tag in each stego-text. Meanwhile, the way of joint retrieval is used for hiding multi-keywords. Experimental results show that the proposed method has good performance in the hiding capacity, the success rate of hiding, the extraction accuracy and the time efficiency with appropriate hidden tags and large-scale of the big text data.
将大数据与隐写术的特点相结合,提出了无载波隐写术来抵御各种隐写攻击。提出了一种基于汉语拼音的多关键词无载波文本隐写方法。在该方法中,从两个单词的拼音组合中选择隐藏标签。在信息隐藏过程中,使用词性来隐藏关键词的数量。同时,通过保证每个隐文本中每个隐标签的唯一性,消除了提取过程中隐标签的冗余性。同时,采用联合检索的方式隐藏多关键字。实验结果表明,该方法在大文本数据的隐藏能力、隐藏成功率、提取精度和时间效率方面都有较好的表现。
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引用次数: 4
Communication optimisation for intermediate data of MapReduce computing model MapReduce计算模型中间数据的通信优化
Pub Date : 2020-03-06 DOI: 10.1504/ijcse.2020.10027428
Yunpeng Cao, Haifeng Wang
MapReduce is a typical computing model for processing and analysis of big data. MapReduce computing job produces a large amount of intermediate data after map phase. Massive intermediate data results in a large amount of intermediate data communication across rack switches in the Shuffle process of MapReduce computing model, this degrades the performance of heterogeneous cluster computing. In order to optimise the intermediate data communication performance of map-intensive jobs, the characteristics of pre-running scheduling information of MapReduce computing jobs are extracted, and job classification is realised by machine learning. The jobs of active intermediate data communication are mapped into a rack to keep the communication locality of intermediate data. The jobs with inactive communication are deployed to the nodes sorted by computing performance. The experimental results show that the proposed communication optimisation scheme has a good effect on Shuffle-intensive jobs, and can reach 4%–5%. In the case of larger amount of input data, the communication optimisation scheme is robust and can adapt to heterogeneous cluster. In the case of multi-user application scene, the intermediate data communication can be reduced by 4.1%.
MapReduce是一种典型的处理和分析大数据的计算模型。MapReduce计算作业在map阶段之后会产生大量的中间数据。在MapReduce计算模型的Shuffle过程中,大量的中间数据导致了大量的中间数据跨机架交换机通信,从而降低了异构集群计算的性能。为了优化地图密集型作业的中间数据通信性能,提取MapReduce计算作业的预运行调度信息特征,并通过机器学习实现作业分类。主动中间数据通信的作业被映射到一个机架中,以保持中间数据的通信局部性。具有非活动通信的作业被部署到按计算性能排序的节点上。实验结果表明,所提出的通信优化方案对shuffle密集型作业具有良好的效果,可达到4% ~ 5%。在输入数据量较大的情况下,该通信优化方案具有鲁棒性,能够适应异构集群。在多用户应用场景下,中间数据通信可减少4.1%。
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引用次数: 3
An integrated ambient intelligence system for a Smart Lab environment 用于智能实验室环境的集成环境智能系统
Pub Date : 2020-03-06 DOI: 10.1504/ijcse.2020.10027434
Dat Do, Scott A. King, A. Sheta, Thanh Pham
The goal of the ambient intelligence system is not only to enhance the way people communicate with the surrounding environment but also to advance safety measures and enrich human lives. In this paper, we introduce an integrated ambient intelligence system (IAmIS) to perceive the presence of people, identify them, determine their locations, and provide suitable interaction with them. The proposed framework can be applied in various application domains such as a smart house, authorisation, surveillance, crime prevention, and many others. The proposed system has five components: body detection and tracking, face recognition, controller, monitor system, and interaction modules. The system deploys RGB cameras and Kinect depth sensors to monitor human activity. The developed system is designed to be fast and reliable for indoor environments. The proposed IAmIS can interact directly with the environment or communicate with humans acting on the environment. Thus, the system behaves as an intelligent agent. The system has been deployed in our research lab and can recognise lab members and guests to the lab as well as track their movements and have interactions with them depending upon their identity and location within the lab.
环境智能系统的目标不仅是增强人们与周围环境的沟通方式,而且是推进安全措施,丰富人类生活。在本文中,我们介绍了一个集成的环境智能系统(iami)来感知人的存在,识别他们,确定他们的位置,并提供适当的互动与他们。所建议的框架可以应用于各种应用领域,例如智能住宅、授权、监视、犯罪预防等。该系统由人体检测与跟踪、人脸识别、控制器、监控系统和交互模块五大部分组成。该系统部署了RGB摄像头和Kinect深度传感器来监控人类活动。所开发的系统被设计为快速可靠的室内环境。所提出的iami可以直接与环境交互,也可以与作用于环境的人类进行通信。因此,系统表现为一个智能代理。该系统已经部署在我们的研究实验室中,可以识别实验室成员和实验室客人,并跟踪他们的动作,并根据他们在实验室中的身份和位置与他们进行互动。
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引用次数: 0
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Int. J. Comput. Sci. Eng.
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