2019 International Symposium on Performance Evaluation of Computer and Telecommunication Systems (SPECTS)最新文献

A Novel Energy Optimization Approach for Artificial Intelligence-enabled Massive Internet of Things 基于人工智能的大规模物联网能源优化新方法

2019 International Symposium on Performance Evaluation of Computer and Telecommunication Systems (SPECTS) Pub Date : 2019-07-22 DOI: 10.23919/SPECTS.2019.8823317

Ali Hassan Sodhro, Mohammad Salauddin, Sandeep Pirbhulal, Gul Hassan Sodhro, Noman Zahid, Abhimanyu Rawat

{"title":"A Novel Energy Optimization Approach for Artificial Intelligence-enabled Massive Internet of Things","authors":"Ali Hassan Sodhro, Mohammad Salauddin, Sandeep Pirbhulal, Gul Hassan Sodhro, Noman Zahid, Abhimanyu Rawat","doi":"10.23919/SPECTS.2019.8823317","DOIUrl":"https://doi.org/10.23919/SPECTS.2019.8823317","url":null,"abstract":"Emerging trends in Internet of things (IoT) has caught the attention of every domain e.g., industrial, business, and healthcare etc. Sensor-embedded IoT devices are the key drivers for collecting large amount of data. Managing these large datasets is one of the critical challenges to be tackled. Continuous huge information collection through sensorenabled devices is known as the massive IoT (mIoT). Thus, there is a need of self-adaptive artificial intelligence (AI)based strategies to effectively cluster, examine and interpret the entire entities in the system. With increased data volumes and power hungry natured IoT devices it is a dire need to manage their power wisely. To fairly allot the power levels to the tiny portable devices it is important to integrate mIoT with AI-based techniques. To remedy these issues this paper proposes a novel cross-layer based energy optimization algorithm (CEOA) in mIoT system by examining the detailed features and data patterns. Experimental analysis reveals that proposed CEOA outperforms its competing counterpart i.e., Baseline in terms of efficient power management and monitoring.","PeriodicalId":118311,"journal":{"name":"2019 International Symposium on Performance Evaluation of Computer and Telecommunication Systems (SPECTS)","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115699594","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}

引用次数: 20

Research and Implementation of Efficient Parallel Processing of Big Data at TELBE User Facility TELBE用户设施大数据高效并行处理的研究与实现

2019 International Symposium on Performance Evaluation of Computer and Telecommunication Systems (SPECTS) Pub Date : 2019-07-22 DOI: 10.23919/SPECTS.2019.8823486

M. Bawatna, B. Green, S. Kovalev, J. Deinert, Oliver Knodel, R. Spallek

{"title":"Research and Implementation of Efficient Parallel Processing of Big Data at TELBE User Facility","authors":"M. Bawatna, B. Green, S. Kovalev, J. Deinert, Oliver Knodel, R. Spallek","doi":"10.23919/SPECTS.2019.8823486","DOIUrl":"https://doi.org/10.23919/SPECTS.2019.8823486","url":null,"abstract":"In recent years, improvements in high-speed Analog-to-Digital Converters (ADC) and sensor technology has encouraged researchers to improve the performance of Data Acquisition (DAQ) systems for scientific experiments which require high speed and continuous data measurements — in particular, measuring the electronic and magnetic properties of materials using pump-probe experiments at high repetition rates. Experiments at TELBE are capable of acquiring almost 100 Gigabytes of raw data every ten minutes. The DAQ system used at TELBE partitions the raw data into various subdirectories for further parallel processing utilizing the multicore structure of modern CPUs. Furthermore, several other types of processors that accelerate data processing like the GPU and FPGA have emerged to solve the challenges of processing the massive amount of raw data. However, the memory and network bottlenecks become a significant challenge in big data processing, and new scalable programming techniques are needed to solve these challenges. In this contribution, we will outline the design and implementation of our practical software approach for efficient parallel processing of our large data sets at the TELBE user facility.","PeriodicalId":118311,"journal":{"name":"2019 International Symposium on Performance Evaluation of Computer and Telecommunication Systems (SPECTS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115223820","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}

引用次数: 3

Influence of the Perceived Data Security, Credibility, Trust and Confidence on the Usage Frequency of Internet Services and the Provision of Security Measures 感知数据安全、可信度、信任和信心对互联网服务使用频率和安全措施提供的影响

2019 International Symposium on Performance Evaluation of Computer and Telecommunication Systems (SPECTS) Pub Date : 2019-07-22 DOI: 10.23919/SPECTS.2019.8823527

Erik Massarczyk, P. Winzer

引用次数: 2

The effect of global and local influence models on the quality of recommendations 全球和地方影响模型对推荐质量的影响

2019 International Symposium on Performance Evaluation of Computer and Telecommunication Systems (SPECTS) Pub Date : 2019-07-22 DOI: 10.23919/SPECTS.2019.8823538

Nikolaos Mantas, M. Louta, M. Eirinaki, Iraklis Varlamis, G. Karetsos

{"title":"The effect of global and local influence models on the quality of recommendations","authors":"Nikolaos Mantas, M. Louta, M. Eirinaki, Iraklis Varlamis, G. Karetsos","doi":"10.23919/SPECTS.2019.8823538","DOIUrl":"https://doi.org/10.23919/SPECTS.2019.8823538","url":null,"abstract":"The quality of recommendations on social networks is a combination of the richness of the available information and the ability of algorithms and architectures to take advantage of this information in favor of the users. Recommendation algorithms have to address several problems, such as information sparsity, scalability of algorithms, concept drift etc. ln this dynamic and complex environment, it is important to provide solutions that enrich information when it is necessary to fill the gaps and at the same time to scale solutions so that they can handle the ever increasing data sizes and flows. ln this work, we extend our previous work on recommender systems for social networks that studied global influence and trust metrics and their applications. More specifically, we introduce a local influence model, which is relied on the formation of local user networks based on common interests and study the performance of the new model, both stand-alone and in combination with the global one. Results show a promising improvement on the similarity between a target user and the users recommended based on the users selected to influence the recommendations for that target user.","PeriodicalId":118311,"journal":{"name":"2019 International Symposium on Performance Evaluation of Computer and Telecommunication Systems (SPECTS)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123338807","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}

引用次数: 1

Which is better for learning: a web-based educational application or an educational game? 哪个更适合学习:基于网络的教育应用程序还是教育游戏?

2019 International Symposium on Performance Evaluation of Computer and Telecommunication Systems (SPECTS) Pub Date : 2019-07-22 DOI: 10.23919/SPECTS.2019.8823232

K. Chrysafiadi, Spyros Papadimitriou, M. Virvou

{"title":"Which is better for learning: a web-based educational application or an educational game?","authors":"K. Chrysafiadi, Spyros Papadimitriou, M. Virvou","doi":"10.23919/SPECTS.2019.8823232","DOIUrl":"https://doi.org/10.23919/SPECTS.2019.8823232","url":null,"abstract":"Last decade, the integration of information and telecommunication technologies into education has changed the processes of teaching and learning. There are many formats of educational applications that range from simple online tutorials, tests and drill and practice software to integrated web-based educational applications and educational games. So, the following question arises: Which kind of educational software and applications is the most effective and suitable? For answering the above question, in this paper, we present a comparative evaluation between a web-based educational application and an educational game that teach the programming language HTML. Both applications include the same learning material. A group of learners used the two applications for experimental evaluation. We observed and recorded the learners’ reactions, preferences and opinions. The observation-experimental data from the usage of the two applications help us to conclude about the educational application that is more likable, offers motivation and engages learners in a higher degree to the learning process. The evaluation results are presented and discussed..","PeriodicalId":118311,"journal":{"name":"2019 International Symposium on Performance Evaluation of Computer and Telecommunication Systems (SPECTS)","volume":"154 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121770663","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}

引用次数: 2

Joint Detection and the AoA Estimation of Noncoherent Signals in Multi-Element Antennas 多元天线中非相干信号的联合检测与AoA估计

2019 International Symposium on Performance Evaluation of Computer and Telecommunication Systems (SPECTS) Pub Date : 2019-07-01 DOI: 10.23919/SPECTS.2019.8823557

O. Bolkhovskaya, A. Maltsev, V. Sergeev

{"title":"Joint Detection and the AoA Estimation of Noncoherent Signals in Multi-Element Antennas","authors":"O. Bolkhovskaya, A. Maltsev, V. Sergeev","doi":"10.23919/SPECTS.2019.8823557","DOIUrl":"https://doi.org/10.23919/SPECTS.2019.8823557","url":null,"abstract":"In this paper, we investigate two schemes of a joint detection and signal wavefront estimation for noncoherent signals. Both the developed schemes are based on the GLR (Generalized Likelihood Ratio) method. The first scheme does not exploit assumptions about the shape of signal wavefront. That leads to the known max lambda test, which uses maximum eigenvalue of a sample correlation matrix of signals in multi-element antenna as a decision statistics. The second scheme uses a priori information about the plane shape of the useful signal wavefront. A three-stage procedure of angle-of-arrival (AoA) estimation for signals with plane wavefront is proposed. This procedure allows to avoid ambiguities in the signal phases measurement on the antenna elements, and is applicable for antenna arrays with arbitrary known geometry. The numerical simulations have been done for comparative analysis of the characteristics of the developed joint detection-estimation algorithms. It was shown that the second scheme provides ldB-2dB depending on the number of antenna elements) in comparison with the max lambda test.","PeriodicalId":118311,"journal":{"name":"2019 International Symposium on Performance Evaluation of Computer and Telecommunication Systems (SPECTS)","volume":"391 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114910929","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}

引用次数: 2

Performance of Multi-Pair Two-Way Full-Duplex Massive MIMO Relay Systems with Direct Lin 直连多对双向全双工大规模MIMO中继系统性能研究

2019 International Symposium on Performance Evaluation of Computer and Telecommunication Systems (SPECTS) Pub Date : 2019-07-01 DOI: 10.23919/SPECTS.2019.8823248

M. Zaher, E. Maher, A. El-Mahdy

{"title":"Performance of Multi-Pair Two-Way Full-Duplex Massive MIMO Relay Systems with Direct Lin","authors":"M. Zaher, E. Maher, A. El-Mahdy","doi":"10.23919/SPECTS.2019.8823248","DOIUrl":"https://doi.org/10.23919/SPECTS.2019.8823248","url":null,"abstract":"In this paper, we consider a multi-pair two-way full-duplex relaying system with multiple-input-multiple-output (MIMO) users. Each pair of users exchange information with the aid of a massive MIMO amplify-and-forward (AF) relay, and correlation between the antennas both at the users as well as the relay is considered. The direct link between all user nodes is assumed to be non-negligible, which is suitable for practical urban scenarios. The low-complexity transceiver design at the relay based on maximum ratio combining/maximum ratio transmission (MRC[MRT) processing is presented. The performance of the system is evaluated in terms of the achievable sum-spectral efficiency under two communication schemes. The first scheme attempts to make use of the joint benefits of the relayed and direct links, while in the second scheme the direct link is considered as interference. Comparison analysis show that the first scheme outperforms the second in the presence of a strong direct link. Moreover, the detrimental effect of spatial correlation between the antennas at each user node is investigated.","PeriodicalId":118311,"journal":{"name":"2019 International Symposium on Performance Evaluation of Computer and Telecommunication Systems (SPECTS)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131417613","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}

引用次数: 2

SPECTS 2019 Front Matter 2019年前瞻事项

2019 International Symposium on Performance Evaluation of Computer and Telecommunication Systems (SPECTS) Pub Date : 2019-07-01 DOI: 10.23919/spects.2019.8823166

引用次数: 0

Influence of the trace resolution and length in the cost optimization process in cloud computing 云计算成本优化过程中轨迹分辨率和长度的影响

2019 International Symposium on Performance Evaluation of Computer and Telecommunication Systems (SPECTS) Pub Date : 2019-07-01 DOI: 10.23919/SPECTS.2019.8823508

Javier García, J. Entrialgo, J. L. Díaz, Manuel García, D. García

{"title":"Influence of the trace resolution and length in the cost optimization process in cloud computing","authors":"Javier García, J. Entrialgo, J. L. Díaz, Manuel García, D. García","doi":"10.23919/SPECTS.2019.8823508","DOIUrl":"https://doi.org/10.23919/SPECTS.2019.8823508","url":null,"abstract":"In order to optimize costs in cloud computing deployments, Virtual Machine (VM) allocation strategies are frequently employed. To compare different strategies, workload traces are required. These traces should be of one second resolution (to take into account the per-second billing) and of one year length (to consider reserved VMs properly). However, there are no public traces with these characteristics corresponding to transactional services. To overcome this issue, in this paper we present different synthesis techniques designed to generate a trace of one second resolution based on a trace with lower resolution, usually one hour. The influence of the different synthesis techniques in the cost optimization process is analyzed, concluding that they have an appreciable effect in the optimization process. As an alternative, the execution of VM allocation strategies using traces shorter than a year (a few months, for example) and the extrapolation of the results to the whole year is also analyzed. We found that this mode of operation can generate misleading results.","PeriodicalId":118311,"journal":{"name":"2019 International Symposium on Performance Evaluation of Computer and Telecommunication Systems (SPECTS)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131243932","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}

引用次数: 0

3D Channel Modeling and Characterization for Hypersurface Empowered Indoor Environment at 60 GHz Millimeter-Wave Band 60 GHz毫米波波段超表面增强室内环境的三维通道建模与表征

2019 International Symposium on Performance Evaluation of Computer and Telecommunication Systems (SPECTS) Pub Date : 2019-06-28 DOI: 10.23919/SPECTS.2019.8823296

R. Mehrotra, R. I. Ansari, A. Pitilakis, Shuai Nie, C. Liaskos, N. Kantartzis, A. Pitsillides

{"title":"3D Channel Modeling and Characterization for Hypersurface Empowered Indoor Environment at 60 GHz Millimeter-Wave Band","authors":"R. Mehrotra, R. I. Ansari, A. Pitilakis, Shuai Nie, C. Liaskos, N. Kantartzis, A. Pitsillides","doi":"10.23919/SPECTS.2019.8823296","DOIUrl":"https://doi.org/10.23919/SPECTS.2019.8823296","url":null,"abstract":"This paper proposes a three-dimensional (3D) communication channel model for an indoor environment considering the effect of the Hypersurface. The Hypersurface is a software controlled intelligent metasurface, which can be used to manipulate electromagnetic waves, as for example for nonspecular reflection and full absorption. Thus it can control the impinging rays from a transmitter towards a receiver location in both LOS and NLOS paths, e.g. to combat distance and improve wireless connectivity. We focus on the 60 GHz mmWave frequency band due to its increasing significance in 5G/6G networks and evaluate the effect of Hypersurface in an indoor environment in terms of attenuation coefficients related to the Hypersurface reflection and absorption functionalities, using CST simulation, a 3D electromagnetic simulator of high frequency components. To highlight the benefits of Hypersurface coated walls versus plain walls, we use the derived Hypersurface 3D channel model and a custom 3D ray-tracing simulator for plain walls considering a typical indoor scenario for different Tx-Rx location and separation distances.","PeriodicalId":118311,"journal":{"name":"2019 International Symposium on Performance Evaluation of Computer and Telecommunication Systems (SPECTS)","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134363367","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}

引用次数: 11