2014 IEEE Ninth International Conference on Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP)最新文献

{"title":"Capturing crowd dynamics at large scale events using participatory GPS-localization","authors":"Ulf Blanke, G. Tröster, Tobias Franke, P. Lukowicz","doi":"10.1109/ISSNIP.2014.6827652","DOIUrl":"https://doi.org/10.1109/ISSNIP.2014.6827652","url":null,"abstract":"Large-scale festivals with a multitude of stages, food stands, and attractions require a complex perimeter design and program planning in order to manage the mobility of crowds as a controlled process. Errors in the planning phase can cause unexpected crowd dynamics and lead to stampedes with lethal consequences. We deployed an official app for Züri Fäscht 2013 - the largest Swiss event - over a period of three days. The app offered information about the festival and featured a background localization allowing us to collect continuously the visitor position. With 56,000 app downloads and 28,000 users contributing 25M location updates in total, we obtained a large scale dataset. By aggregation of location points complex crowd dynamics can be captured during the entire festival. In this paper we present the data collection for Züri Fäscht 2013 and best practices to acquire as many contributing users as possible for such an event. Furthermore, we show the potential of aggregated location data and visualize relevant parameters that can serve as tool for analysis and planning of program and perimeter design.","PeriodicalId":269784,"journal":{"name":"2014 IEEE Ninth International Conference on Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123372113","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 CMOS-compatible lamb wave resonator for liquid properties sensing","authors":"Tao Wang, Chengkuo Lee, X. Mu, P. Kropelnicki, A. Randles","doi":"10.1109/ISSNIP.2014.6827624","DOIUrl":"https://doi.org/10.1109/ISSNIP.2014.6827624","url":null,"abstract":"Lamb wave sensor for liquid properties sensing is superior to other acoustic wave sensors, because of the high sensitivity and low attenuation. Researchers mainly focus on the delay line based Lamb wave sensor. Such kind of Lamb wave sensor suffers from issues of poor quality factor, stability and reproducibility. Lamb wave resonator which provides a compact and rugged solution, however, lacks of study. In this work we develop a Lamb wave resonator and study its liquid sensing performance. A high quality factor of 1909 and linear frequency response to the square root of viscosity-density product of the liquid are achieved.","PeriodicalId":269784,"journal":{"name":"2014 IEEE Ninth International Conference on Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123394030","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":"Placement of relayers in wireless industrial sensor networks: An approximation algorithm","authors":"A. Willig","doi":"10.1109/ISSNIP.2014.6827685","DOIUrl":"https://doi.org/10.1109/ISSNIP.2014.6827685","url":null,"abstract":"We consider the joint problem of relay-aware TDMA scheduling and optimal placement of relays to improve transmission reliability under deadline constraints. We build on existing algorithms for TDMA scheduling. We propose an iterative placement and scheduling algorithm and compare its performance (in terms of the average number of packets not successfully transmitted before their deadline) against two baseline algorithms, one using random relay placement, and another algorithm giving the truly optimal relay positions and schedule on a grid. Our results show that the iterative placement algorithm is substantially better than random placement. Furthermore, we have applied the truly optimal scheduling and placement algorithm to a simple scenario with one relay and found that the iterative placement algorithm gives almost the same performance.","PeriodicalId":269784,"journal":{"name":"2014 IEEE Ninth International Conference on Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128875779","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":"Modelling threshold exceedence levels for spatial stochastic processes observed by sensor networks","authors":"G. Peters, Ido Nevat, Shaowei Lin, Tomoko Matsui","doi":"10.1109/ISSNIP.2014.6827635","DOIUrl":"https://doi.org/10.1109/ISSNIP.2014.6827635","url":null,"abstract":"We develop a new framework for explicitly modelling the threshold exceedence levels of the spatial stochastic process being monitored by a sensor network. Our framework also allows incorporating additional observed features as explanatory factors for the behaviour of the spatial stochastic process, and in particular the probability of exceedence of a user defined threshold level in any given region of space. Such a model has many practical applications for accurate decision making under uncertainty when the monitored process exceeds user specified critical thresholds.","PeriodicalId":269784,"journal":{"name":"2014 IEEE Ninth International Conference on Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125559379","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":"Motivation of a new approach for shape reconstruction based on FBG-optical fibers: Considering of the Bragg-gratings composition as a sensornetwork","authors":"H. Pauer, C. Ledermann, H. Wörn","doi":"10.1109/ISSNIP.2014.6827645","DOIUrl":"https://doi.org/10.1109/ISSNIP.2014.6827645","url":null,"abstract":"In various fields of application, the shape and the tip position of flexible, snakelike objects have to be reconstructed. For this, the considered objects are fitted with so-called shape sensors. This shape sensors are e.g. applied in medical technology to support minimally invasive surgical interventions by tracking flexible instruments; this way navigation systems can be considerably supported. The sensors consist of a solid snakelike body out of flexible carrier material, as silicone, with embedded FBG - optical glass fibers along the object-axis. Guided along the observed instruments, the sensor is supposed to detect the instruments shape by detecting its own ones. The fibers measure the strain at discrete points along the sensor body, which is caused by deformation of the sensor. From these values the shape is estimated. This estimation is performed using specific algorithms. Accordingly, certain requirements regarding the position, orientation and exact number of the measurement units are made. As part of the manufacturing process of the sensor, however, exact control of fiber positioning cannot be realized. To compensate this inaccuracy and also further occurring problems, a fundamentally new calculation approach is presented in this paper. The basic idea is, to consider the system of measurement units as a sensor network. The position and orientation of the units are not considered to be static, because they can only be detected after production but cannot be exactly implemented in a controlled way with a planned position and orientation. The idea is realized by initializing a tensor field on a manifold, representing the surface of the object. This allows to apply the algorithm to measurement values, measured at randomly distributed positions along the sensor body. The new approach is promising and more accuracy in shape sensing is expected do be achieved. The approach of surface characterization is developed in a way that it is transferable to other applications. In the future, also areas in general can be analysed by applying to adapted algorithms based on the same idea. Interpolation of e.g. temperature- and radiation fields can be done in an intelligent way by measuring discrete values by efficiently distributed measurement units.","PeriodicalId":269784,"journal":{"name":"2014 IEEE Ninth International Conference on Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128845477","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":"Continuous outlier detection on uncertain data streams","authors":"Salman Ahmed Shaikh, H. Kitagawa","doi":"10.1109/ISSNIP.2014.6827672","DOIUrl":"https://doi.org/10.1109/ISSNIP.2014.6827672","url":null,"abstract":"Time series data streams are common due to the increasing usage of wireless sensor networks. Such data are often accompanied with uncertainty due to the limitations of data collection equipment. Outlier detection on uncertain static data is a challenging research problem in data mining. Moreover, the continuous arrival of data makes it more challenging. Hence, in this paper, the problem of outlier detection on uncertain time series data streams is studied. In particular, we propose a continuous distance-based outlier detection approach on a set of uncertain objects' states that are originated synchronously from a group of data sources (e.g., sensors in WSN). A set of objects' states at a timestamp is called a state set. Generally, the duration between two consecutive timestamps is very short and the state of all the objects may not change much in this duration. Therefore, we propose an incremental approach of outlier detection, which makes use of the results obtained from the previous state set to efficiently detect outliers in the current state set. In addition, an approximate incremental outlier detection approach is proposed to further reduce the cost of incremental outlier detection. Finally, an extensive empirical study on synthetic and real datasets is presented, which shows the efficiency of the proposed approaches.","PeriodicalId":269784,"journal":{"name":"2014 IEEE Ninth International Conference on Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127587652","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":"Novel Trellis Coded Modulation for coherent IEEE 802.15.4a Impulse-Radio Ultra-Wideband communications","authors":"I. Dotlic, R. Miura","doi":"10.1109/ISSNIP.2014.6827643","DOIUrl":"https://doi.org/10.1109/ISSNIP.2014.6827643","url":null,"abstract":"The paper proposes a novel Trellis Coded Modulation (TCM) scheme for coherent Impulse-Radio Ultra-Wideband (IR-UWB) IEEE 802.15.4a communications that, in comparison with the current IEEE 802.15.4a IR-UWB communications scheme, is able to reduce energy per bit consumed in the receiver two times with approximately 2 dB performance loss. Furthermore, changed in the IEEE 802.15.4a coherent IR-UWB radio required to implement proposed TCM are minimal. Downside is that the proposed TCM scheme cannot be detected by non-coherent receivers. Discussion starts by looking at the current IEEE 802.15.4a IR-UWB coding and modulation scheme as a rudimentary TCM. After that, a transition is made through the TCM framework from the current IEEE 802.15.4a IR-UWB coding and modulation scheme to the proposed one.","PeriodicalId":269784,"journal":{"name":"2014 IEEE Ninth International Conference on Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121342834","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":"Mobile crowdsourcing older people's opinions to enhance liveability in regional city centres","authors":"Jason Thome, Ao Li, V. Sivaraman, C. Bridge","doi":"10.1109/ISSNIP.2014.6827675","DOIUrl":"https://doi.org/10.1109/ISSNIP.2014.6827675","url":null,"abstract":"With larger numbers of older people living longer, an increasing proportion of the population will require a more supportive and responsive regional city environment. However, regional local governments have neither the resources nor the appropriate tools needed to understand and respond to the infrastructure needs of older persons. As mobile devices such as tablets and phones proliferate, there is an opportunity to use mobile apps to engage older people more effectively with their local government associations in planning the future of their regional city centres. In this paper we discuss the potential of this application for crowdsourcing older people's opinions as a form of community engagement. The application was developed in partnership with the Local Government Association and the partnership of the two regional local governments who participated in our pilot. We begin by describing the architecture of our platform, addressing choices regarding user interface design, modes and models for data capture, and standards guidelines. We then discuss methods we use for analyzing and visualizing the collected data to facilitate better decision making by governments. Lastly, we discuss the results of the field trials of our platform with mobile focus groups comprising senior citizens in two coastal regional cities in New South Wales, and interpret how our findings relate with the planning and development of these towns. Our work is the first step towards the use of mobile technologies to enable large scale data collection that can lead to smarter and more liveable cities for senior citizens.","PeriodicalId":269784,"journal":{"name":"2014 IEEE Ninth International Conference on Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128125700","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":"EAVS: Energy aware virtual sensing for wireless sensor networks","authors":"Mohamed Abdelaal, Yang Gao, M. Fränzle, Oliver E. Theel","doi":"10.1109/ISSNIP.2014.6827655","DOIUrl":"https://doi.org/10.1109/ISSNIP.2014.6827655","url":null,"abstract":"In order to extend the operational span of wireless sensor networks, we propose to trade energy consumption for average response time by extending the deactivation periods of sensors with a particularly high energy consumption. To compensate for the temporal inavailability of these sensors, alternative, low-power hybrid sensors generate estimates on the probabilities of the occurrence of interesting events, waking up the corresponding main sensor when detection probability justifies it. We demonstrate the principle on a case study of gas detection and analyze its efficiency formally using probabilistic model checking, which is able to compute probabilistic quantified properties pertaining to energy consumption, lifetime expectancy, and response time. The preliminary results confirm significant savings in energy consumption while retaining an acceptable average response time.","PeriodicalId":269784,"journal":{"name":"2014 IEEE Ninth International Conference on Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132827672","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 novel channel aware stage ARQ in wide area Wireless Sensor Networks","authors":"Yunkai Wei, Y. Mao, Wentao Huang, Pak Hou Che","doi":"10.1109/ISSNIP.2014.6827595","DOIUrl":"https://doi.org/10.1109/ISSNIP.2014.6827595","url":null,"abstract":"In wide area Wireless Sensor Networks, end-to-end ARQ (Automatic Repeat reQuest) may incur frequent retransmissions and significant energy consumption due to packet loss in multi-hop routes. On the other hand, hop-by-hop ARQ requires each node to be equipped with sufficient buffer and energy for data caching and retransmission, which is not always practical in wide area networks. To achieve a balance between communication reliability and resource consumption, this paper proposes a novel Channel Aware Stage ARQ (CASA), which divides the multi-hop route into several ARQ segments according to the channel quality. Each ARQ segment implements packet confirmation and retransmission separately. Comparing to traditional ARQ schemes, CASA achieves required reliability with reduced network cost and energy consumption. Extensive simulation validated the performance of CASA.","PeriodicalId":269784,"journal":{"name":"2014 IEEE Ninth International Conference on Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132114226","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}