Proceedings of the 2017 International Conference on Smart Digital Environment最新文献

Room occupancy estimation through wifi, UWB, and light sensors mounted on doorways 通过wifi、超宽带和安装在门口的光传感器估算房间占用情况

Proceedings of the 2017 International Conference on Smart Digital Environment Pub Date : 2017-07-21 DOI: 10.1145/3128128.3128133

Hessam Mohammadmoradi, Shengrong Yin, O. Gnawali

{"title":"Room occupancy estimation through wifi, UWB, and light sensors mounted on doorways","authors":"Hessam Mohammadmoradi, Shengrong Yin, O. Gnawali","doi":"10.1145/3128128.3128133","DOIUrl":"https://doi.org/10.1145/3128128.3128133","url":null,"abstract":"Recent studies have shown that adjusting HVAC systems based on the number of people inside the room can save at least 38% of energy consumed for reheating. Besides, accurate estimate of room's occupants is useful in improving the safety and security of the buildings. There are many research proposals and commercial products for reliable and efficient people counting, however, these solutions are expensive, hard to deploy, or obstructive to people flow. We investigate the possibility of utilizing wireless and light sensing technologies in the doorways to track the entrances/exits to/from the room. Our solution is inexpensive, unobtrusive with much fewer deployment constraints compared to existing people counting solutions. For RF based sensing, we use ultra-wideband signals at center frequency of 4 GHz with 500 MHz bandwidth and narrowband wireless signals (WiFi) at the center frequency of 2.4 GHz with the bandwidth of 20 MHz. We also evaluate the possibility of using existing WiFi infrastructure to count people. Ambient light is second physical phenomenon which we utilize for accurately counting number of people walk through the doors. We place low cost photodiode on door frames to detect changes in light illuminance level when there are people walking through the door. Light based people counting requires an installation of just one inexpensive photodiode at the doorway which makes our solution highly applicable for large scale deployments. We evaluated our solution via several controlled and uncontrolled real-world environments. The results show an average of 96% accuracy in estimating the number of occupants in rooms.","PeriodicalId":362403,"journal":{"name":"Proceedings of the 2017 International Conference on Smart Digital Environment","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124868477","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: 18

Optimization of synthesis parameters of adaptive generalized predictive control using genetic algorithms 基于遗传算法的自适应广义预测控制综合参数优化

Proceedings of the 2017 International Conference on Smart Digital Environment Pub Date : 2017-07-21 DOI: 10.1145/3128128.3128150

Abdelaziz Mouhou, A. Badri, A. Ballouk, Y. Sayouti

{"title":"Optimization of synthesis parameters of adaptive generalized predictive control using genetic algorithms","authors":"Abdelaziz Mouhou, A. Badri, A. Ballouk, Y. Sayouti","doi":"10.1145/3128128.3128150","DOIUrl":"https://doi.org/10.1145/3128128.3128150","url":null,"abstract":"This paper concentrates on the off-line optimization of adaptive generalized predictive control (AGPC) tuning parameters using genetic algorithms (GAs). The Adaptive generalized predictive control algorithm is detailed and presented. A single input single output (SISO) controlled autoregressive integrated moving average (CARIMA) model is used to predict the future behavior of the system. The online parametric adaptation algorithm (PAA) used in this work is based on recursive least squares (RLS) identification algorithm with fixed forgetting factor. The synthesis parameters (minimal prediction horizon, maximal prediction horizon, control horizon and cost weighting factor) are optimized using genetic algorithms, this technique improves the closed-loop performances. The fitness function to be minimized is a set of closed loop performance metrics (the settling time, the rise time, the overshoot and the variance of the control signal). In order to verify the validity of the proposed strategy, a simulation example of asynchronous motor speed is presented. The obtained results shows the effectiveness of this approach.","PeriodicalId":362403,"journal":{"name":"Proceedings of the 2017 International Conference on Smart Digital Environment","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128523182","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

Moisture vulnerability of antenna operation in UHF band 超高频波段天线工作的水分脆弱性

Proceedings of the 2017 International Conference on Smart Digital Environment Pub Date : 2017-07-21 DOI: 10.1145/3128128.3128138

Mounir El Mejjatti, A. Habbani, Bilal Essaid, Hicham Amraoui

{"title":"Moisture vulnerability of antenna operation in UHF band","authors":"Mounir El Mejjatti, A. Habbani, Bilal Essaid, Hicham Amraoui","doi":"10.1145/3128128.3128138","DOIUrl":"https://doi.org/10.1145/3128128.3128138","url":null,"abstract":"Behavior of the propagation medium in reaction with electromagnetic fields is described by its dielectric permittivity; this electric property is a function of the physical characteristics of the medium and those of the propagating wave. Among the parameters, which considerably affect the dielectric permittivity of a medium, its water content. In fact, when the snow wetness varies from 0 to 50% in the melting layer, real part of the mixture permittivity varies from 1.47 to 5.86. Similarly, when soil moisture varies from 0 to 40% real and imaginary parts of effective permittivity of soil, air and water mixture vary from 4.13 to 24.85 and from 0 to 3.44 respectively. This dynamism in the permittivity as a function of the humidity is able to alter the efficiency of the antenna within the application. In this paper, we propose a study to analyze the impact of wetness on the performance of a dipole antenna with central frequency of 900 MHz. The study was carried out by simulating the behavior of the dipole antenna model in Finite Element Method (FEM) full wave simulator with different values of the water content of two propagation mediums: melting layer and soil. Simulation results concerning the resonant frequency, bandwidth, directivity are presented through paragraphs of the paper.","PeriodicalId":362403,"journal":{"name":"Proceedings of the 2017 International Conference on Smart Digital Environment","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124068480","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

Automatic motion segmentation using random walks 自动运动分割使用随机行走

Proceedings of the 2017 International Conference on Smart Digital Environment Pub Date : 2017-07-21 DOI: 10.1145/3128128.3128139

Idir Boulfrifi, K. Housni, A. Mouloudi

引用次数: 0

SAS-IMS for smart mobile security in IP multimedia subsystem IP多媒体子系统中智能移动安全的SAS-IMS

Proceedings of the 2017 International Conference on Smart Digital Environment Pub Date : 2017-07-21 DOI: 10.1145/3128128.3128134

Ayoub Bahnasse, M. Talea, Fatima Ezzahraa Louhab, Sara Laafar, Adel Harbi, Azeddine Khiat

引用次数: 8

DTC-SVM based on active disturbance rejection control applied on sensorless induction motor 基于DTC-SVM的自抗扰控制在无传感器异步电动机中的应用

Proceedings of the 2017 International Conference on Smart Digital Environment Pub Date : 2017-07-21 DOI: 10.1145/3128128.3128148

Chalawane Haitam, A. Essadki, Nasser Tamou

{"title":"DTC-SVM based on active disturbance rejection control applied on sensorless induction motor","authors":"Chalawane Haitam, A. Essadki, Nasser Tamou","doi":"10.1145/3128128.3128148","DOIUrl":"https://doi.org/10.1145/3128128.3128148","url":null,"abstract":"This work addresses the problem inherent in internal induction motor parameters variation during the operation, which significantly degrades the performance of a direct torque controlled (DTC-SVM), DTC-SVM scheme is the alternative to the classical DTC schemes based on space vector modulation (SVM) strategy that minimizes the torque ripples is introduced in the first part of this work. In order to overcome these disturbances, we present in the second part of this paper a new robust command called Active disturbance rejection control (ADRC) which has been acquired an important concern of researchers and developed to ensure good dynamic performance of induction machine. ADRC can precisely estimate the derivative signals owing to extended state observer (ESO), the basic element of ADRC and accurate decoupling of induction motor is attained. The third part of the paper deals with the description of an Advanced SM-MRAS observer based on a combination of sliding mode designed for speed estimation is investigated in this work. In the last part, the proposed schemes shown in simulation results demonstrate the good efficiency, adaptability and robustness of sensorless induction motor against the internal as well as the external disturbances.","PeriodicalId":362403,"journal":{"name":"Proceedings of the 2017 International Conference on Smart Digital Environment","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117277253","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

Water quality sensors for smart cities 智能城市的水质传感器

Proceedings of the 2017 International Conference on Smart Digital Environment Pub Date : 2017-07-21 DOI: 10.1145/3128128.3129386

A. Mickelson, Daniel Tsvankin

引用次数: 1

Maximum power point tracking using fuzzy logic based controllers compared to P&O technique in photovoltaic generator 基于模糊逻辑的光伏发电机组最大功率点跟踪与P&O技术的比较

Proceedings of the 2017 International Conference on Smart Digital Environment Pub Date : 2017-07-21 DOI: 10.1145/3128128.3128149

Manari Otmane, Zazi Malika, Chtouki Ihssane

引用次数: 2

Meta-recommender approach using meta-knowledge 使用元知识的元推荐方法

Proceedings of the 2017 International Conference on Smart Digital Environment Pub Date : 2017-07-21 DOI: 10.1145/3128128.3128153

Nadia Boufardi, O. Baida, A. Sedqui, A. Lyhyaoui

引用次数: 0

Topic and sentiment model applied to the colloquial Arabic: a case study of Maghrebi Arabic 话题和情感模型在阿拉伯语口语中的应用——以马格里布阿拉伯语为例

Proceedings of the 2017 International Conference on Smart Digital Environment Pub Date : 2017-07-21 DOI: 10.1145/3128128.3128155

Taoufiq Zarra, R. Chiheb, Rajae Moumen, R. Faizi, A. E. Afia

{"title":"Topic and sentiment model applied to the colloquial Arabic: a case study of Maghrebi Arabic","authors":"Taoufiq Zarra, R. Chiheb, Rajae Moumen, R. Faizi, A. E. Afia","doi":"10.1145/3128128.3128155","DOIUrl":"https://doi.org/10.1145/3128128.3128155","url":null,"abstract":"Recently, the multiplication of communication and sharing platforms such as social networks, personal blogs, forums, etc., has facilitated the expression of views and opinions about products, personalities, and public policy. However, gathering these points of view is a complex task that requires resolution of many problems in different disciplines, especially issues related to our language. Among the research areas, topic modeling and sentiment analysis stimulates interest and curiosity of the scientific community. Lately, the current economic, geo-political and geostrategic trends have made researchers specifically more interested in Arabic language, except that the majority of these studies focus on the classical Arabic; nevertheless it is a language of the elites which is different from what is mainly used on the Web. Our paper focuses on Maghrebi colloquial Arabic since the little research that exists in this area is limited to East colloquial Arabic. On a corpus extracted from different Facebook pages we implemented a supervised approach to extract the sentiments, and an unsupervised approach to extract topic, then we proposed a new, semi-supervised, approach in the Arabic language that combines the topic and the sentiment in a single model, in order to join each topic to a specific sentiment.","PeriodicalId":362403,"journal":{"name":"Proceedings of the 2017 International Conference on Smart Digital Environment","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129273531","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: 12