{"title":"A task scenario oriented test requirement modeling method for complex SOA-based system","authors":"Luo Xu, Jing Shi, Bo Hao, Ning Li, Zhiqiang Fan","doi":"10.1109/SYSCON.2015.7116736","DOIUrl":"https://doi.org/10.1109/SYSCON.2015.7116736","url":null,"abstract":"Test requirement models play an important role in model-driven testing for net-centric, SOA-based systems. In literature, there still lack a test requirement modeling method that can describe multiple types of test requirement of SOA-based systems. Such lack would increase test burden and bring negative effects on test sufficiency. In this paper, we propose a task scenario oriented test requirements modeling method (named as TabTre) to describe functional, performance and reliability test requirements in a unified way. First, we identify the key elements and their relationships that are used to depict test requirements for all three types of testing under the typical task scenarios of SUT. Second, the elements and relationships are separated into three views to describe task decomposition, interaction scenario and task plan respectively. Besides, several rules for checking completeness and consistency of TabTre models and a suggested process of using the three views are provided. Finally, a case study is conducted to validate TabTre and automatic test generation is discussed. The results show that using task scenario can effectively describe test requirements of complex SOA-based systems and support multiple types of testing.","PeriodicalId":251318,"journal":{"name":"2015 Annual IEEE Systems Conference (SysCon) Proceedings","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133383207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A low-complexity residual CFO estimation scheme for OFDM systems","authors":"H. Yeh, E. Chan","doi":"10.1109/SYSCON.2015.7116831","DOIUrl":"https://doi.org/10.1109/SYSCON.2015.7116831","url":null,"abstract":"A low-complexity residual carrier frequency offsets (CFOs) estimation scheme of a multiuser uplink orthogonal frequency division multiplexing (OFDM) system is presented as an improvement to the traditional time-multiplexed method. This method employs an orthogonal code, such as the Frank-Zadoff code, in the training sequence. Each antenna transmits this code sequence according to a prearranged schedule. Hence, the base station estimates the uplink CFO of each path in an efficient time and spectral manner. Compared to the time-multiplexed method, the total required training time is reduced approximately 50% and the computation requirement is also reduced approximately 50% as the number of users grows large. Moreover, the overhead for the total uplink frame at the BS is independent to the number of users. Simulations of a 2×1 systems show that this new method has a smaller variance of the estimation error than the time-multiplexed method when the signal-to-noise ratio (SNR) is low, and the same variance of the estimation error as the time-multiplexed method when the SNR is high in the COST207 typical urban.","PeriodicalId":251318,"journal":{"name":"2015 Annual IEEE Systems Conference (SysCon) Proceedings","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116646017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Adriano Bittar, N. Vitzilaios, M. Rutherford, K. Valavanis
{"title":"An integrated framework for cooperative ground and aerial vehicle missions utilizing Matlab and X-Plane","authors":"Adriano Bittar, N. Vitzilaios, M. Rutherford, K. Valavanis","doi":"10.1109/SYSCON.2015.7116800","DOIUrl":"https://doi.org/10.1109/SYSCON.2015.7116800","url":null,"abstract":"This paper presents an integrated control framework for the simulation and visualization of cooperative missions for unmanned aerial vehicles (UAVs) and unmanned ground vehicles (UGVs). The X-Plane simulator is utilized to simulate vehicle dynamics and visualize experiments in realistic environments, whereas the control algorithms are executed and validated in Matlab/Simulink. A novel approach to integrate ground vehicles in X-Plane is presented and an overall open source framework is developed to facilitate the interaction and usability of the two software programs used. The framework facilitates research in cooperative vehicle control, path planning, formation control, and centralized control topologies through straightforward and cost effective system simulation, visualization and evaluation.","PeriodicalId":251318,"journal":{"name":"2015 Annual IEEE Systems Conference (SysCon) Proceedings","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117354599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. Hernandez, Jason Kane, Fan Zhang, Xiaorong Zhang, H. Huang
{"title":"Towards ubiquitous mobile-computing-based artificial leg control","authors":"R. Hernandez, Jason Kane, Fan Zhang, Xiaorong Zhang, H. Huang","doi":"10.1109/syscon.2015.7116852","DOIUrl":"https://doi.org/10.1109/syscon.2015.7116852","url":null,"abstract":"This paper presents a rapid prototype approach for the development of a real-time capable neural-machine-interface (NMI) for control of artificial legs based on mobile processor technology (Intel Atom™ Z530 Processor.) By effectively exploiting the architectural features of a mobile embedded CPU, we implemented a decision-making algorithm, based on neuromuscular-mechanical fusion and gait phase-dependent support vector machines (SVM) classification to meet the demanding performance constraints. To demonstrate the feasibility of a real-time mobile computing based NMI, real-time experiments were performed on an able bodied subject with window increments of 50ms. The experiments showed that the mobile computing based NMI provided fast and accurate classifications of four major human locomotion tasks (level-ground walking, stair ascent, stair descent, and standing) and a 46X speedup over an equivalent MATLAB implementation. The testing yielded accuracies of 96.31% with low power consumption. An offline analysis showed the accuracy could be increased to 98.87% with minor modifications to the application.","PeriodicalId":251318,"journal":{"name":"2015 Annual IEEE Systems Conference (SysCon) Proceedings","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125334029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Optimization of multi-satellite systems using integrated Model Based System Engineering (MBSE) techniques","authors":"Jeremiah Crane, L. Brownlow","doi":"10.1109/SYSCON.2015.7116753","DOIUrl":"https://doi.org/10.1109/SYSCON.2015.7116753","url":null,"abstract":"Advances in workstation computational capabilities have enabled more powerful modeling and simulation tools to system engineers. Concurrent Engineering Methodologies (CEMs) are now more accessible than ever before. Model Based System Engineering (MBSE) toolsets can be incorporated to the analysis process to facilitate the management of the requirements and design parameters and objectives. This paper explores how CEMs and MBSE techniques can be combined together to produce a single analytic framework we call the MBSE Integration for System Optimization (MISO). We test the approach on a pilot project to aid in the design of a resilient fire detection remote sensing constellation of small satellites. This proof-of-concept study showcases how the MISO analytic framework can be used to optimize satellite designs, trade-space generation, and requirements validation.","PeriodicalId":251318,"journal":{"name":"2015 Annual IEEE Systems Conference (SysCon) Proceedings","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117038559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A multi-objective evolutionary algorithm-based decision support system: A case study on job-shop scheduling in manufacturing","authors":"Choo Jun Tan, Samer Hanoun, C. Lim","doi":"10.1109/SYSCON.2015.7116747","DOIUrl":"https://doi.org/10.1109/SYSCON.2015.7116747","url":null,"abstract":"In this paper, an evolutionary algorithm is used for developing a decision support tool to undertake multi-objective job-shop scheduling problems. A modified micro genetic algorithm (MmGA) is adopted to provide optimal solutions according to the Pareto optimality principle in solving multi-objective optimisation problems. MmGA operates with a very small population size to explore a wide search space of function evaluations and to improve the convergence score towards the true Pareto optimal front. To evaluate the effectiveness of the MmGA-based decision support tool, a multi-objective job-shop scheduling problem with actual information from a manufacturing company is deployed. The statistical bootstrap method is used to evaluate the experimental results, and compared with those from the enumeration method. The outcome indicates that the decision support tool is able to achieve those optimal solutions as generated by the enumeration method. In addition, the proposed decision support tool has advantage of achieving the results within a fraction of the time.","PeriodicalId":251318,"journal":{"name":"2015 Annual IEEE Systems Conference (SysCon) Proceedings","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129042438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Performance and DSP implementation of soft bit-level demapper for M-QAM-OFDM systems","authors":"H. Yeh, Wai-Yee Fung","doi":"10.1109/SYSCON.2015.7116850","DOIUrl":"https://doi.org/10.1109/SYSCON.2015.7116850","url":null,"abstract":"Parallel implementation of a simple suboptimal bit-level demapper algorithm of M-ary QAM orthogonal frequency division multiplexing (OFDM) by using a TMS320C5515 digital signal processor (DSP) is presented. The performance of both bit-level demapper in hard and soft decision for M-QAM-OFDM is compared in terms of bit error rate (BER) and DSP computational time at a 100 MHz clock rate. The FFT operation takes the major computational time at the receiver for both hard and soft decision. The soft decision requires a Viterbi decoder, which requires the additional computing time to that of hard decision. The BER performance of this bit-level algorithm is shown to be the same as that of the optimal ML method theoretically, when Eb/No is high. Moreover, soft bit values for soft decoding are derived from this bit-level demapper algorithm. At BER=10-3 and rate ½, the BER of the coded 64-QAM-OFDM significantly outperforms the coded 256-QAM-OFDM by 6 dB in COST207 typical urban (TU) fading channels. At BER=10-4 and rate 2/3, the BER of the coded QPSK-OFDM significantly outperforms the coded 16-QAM-OFDM by 8 dB in COST207 TU fading channels.","PeriodicalId":251318,"journal":{"name":"2015 Annual IEEE Systems Conference (SysCon) Proceedings","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126675053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Case study on the reliability of unattended outdoor wireless sensor systems","authors":"Agnelo R. Silva, M. Moghaddam, M. Liu","doi":"10.1109/SYSCON.2015.7116846","DOIUrl":"https://doi.org/10.1109/SYSCON.2015.7116846","url":null,"abstract":"Designed to support in-situ soil moisture measurements for the National Aeronautics and Space Administration (NASA) SMAP Mission, the SoilSCAPE project started more than 6 years ago and currently it has more than 141 sensor nodes and 500 soil probes spread in 7 sites, each one with a Wireless Sensor Network (WSN) connected to a central data server by means of cellular text (SMS) and 3G links. These unattended WSNs are among the largest existing outdoor networks (in terms of node sparsity) and they are operating continuously for more than 2 years. All regular sensor nodes employ non-rechargeable batteries and the failure rate due to software and electronic issues is steadily zero during the years. A very high reliability of the system is paramount in order to reduce the total cost of ownership (TCO) of WSN solutions deployed in unattended and harsh scenarios because in many cases the maintenance costs may be multiple times the value of the device to be fixed. Therefore, we designed a Watchdog Timer (WDT) solution which is supported by a special software engineering methodology involving software and hardware modules that are WDT-aware. The main focus of this paper is to describe this novel WDT approach for embedded systems and to analyze its effectiveness for unattended systems, in particular outdoor WSNs.","PeriodicalId":251318,"journal":{"name":"2015 Annual IEEE Systems Conference (SysCon) Proceedings","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123895169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"An approach for estimating cyber attack level of effort","authors":"T. Llansó, A. Dwivedi, Mike D. Smeltzer","doi":"10.1109/SYSCON.2015.7116722","DOIUrl":"https://doi.org/10.1109/SYSCON.2015.7116722","url":null,"abstract":"Timely risk assessments allow organizations to gauge the degree to which cyber attacks threaten their mission/business objectives. Risk plots in such assessments typically include cyber attack likelihood values along with the impact. This paper describes an algorithm and an associated model that allow for estimation of one aspect of cyber attack likelihood, attack level of effort. The approach involves the use of an ordinal set of standardized attacker tiers, associated attacker capabilities, and protections (security controls) required to resist those capabilities.","PeriodicalId":251318,"journal":{"name":"2015 Annual IEEE Systems Conference (SysCon) Proceedings","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124143784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"IT control over social media technology: A systems view of social media management","authors":"N. King, Leila Khauli","doi":"10.1109/SYSCON.2015.7116822","DOIUrl":"https://doi.org/10.1109/SYSCON.2015.7116822","url":null,"abstract":"Affiliates (e.g, agents and distributors) may pressure their parent companies to accelerate the pace of social media adoption. When these affiliates are excluded from the parent IT infrastructure, they establish their own social media presence. Yet the digital presence of a company is typically controlled by the parent information technology (IT) function even if current social media platforms can be used without IT assistance. The study identifies ways in which parents can still exert control over social media usage through the use of IT control points that still connect an affiliate to a parent. These control points were identified through studying the social media strategy of a local affiliate associated with a multi-national clothing retailer. The study hints at the potential shift in the balance of power by easy-to-use social media applications and the intricate web of control to maintain it.","PeriodicalId":251318,"journal":{"name":"2015 Annual IEEE Systems Conference (SysCon) Proceedings","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126474394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}