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Measurement of anisotropic flow in XeXe collisions at 5.44 TeV with the CMS experiment
(2019)Nuclear Physics A ~ The 27th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter 2018)New measurements of anisotropic flow in XeXe collisions at a center-of-mass energy of 5.44 TeV per nucleon pair, collected by the CMS experiment at the LHC, are presented. The ν2, ν3 and ν4 Fourier coefficients of the anisotropic azimuthal distribution are obtained employing three different analysis techniques: two-particle correlations, the scalar product method, and multiparticle cumulants, which have different sensitivities to non-flow ...Conference Paper -
Spotlight on Market Realities – an Exploratory Approach
(2018)Adjunct Proceedings of the 14th International Conference on Location Based ServicesWork in progress paper giving a market overview by using methodological design best described as a systematic exploration – based on elements of qualitative content analysis. The research will focus on already identified fields of investigation, which are diffusion (of technology), key players or actors in the industry, fields of application and international comparability of markets.Conference Paper -
Identifying User Tasks in Map Based-Pedestrian Navigation from Eye Tracking Data
(2018)Adjunct Proceedings of the 14th International Conference on Location Based ServicesEye movement data convey a wealth of information that can be used to inspect human behavior and cognitive processes. In this study, we explored to identify user tasks in map-based pedestrian navigation using eye movement data. We collected 44 participants’ eye movement data by conducting an eye tracking experiment in real-world environments. We trained and cross-validated a Random Forests classifier to classify 7 common user tasks using ...Conference Paper -
Detecting Location-Based User Actions
(2018)Adjunct Proceedings of the 14th International Conference on Location Based ServicesThe use of mobile devices with GPS facility is increasing in daily life. In this paper, we propose to detect several user actions based on data collected by the Mopsi application. We distinguish several types of actions such as: taking or uploading photos, completing tracking, visiting or passing-by a service and multiple users meeting. We evaluate the proposed algorithms by collecting ground truth and measuring error rates. The proposed ...Conference Paper -
Roundness Measure for GPS Routes
(2018)Adjunct Proceedings of the 14th International Conference on Location Based ServicesWe introduce a method to measure roundness of a GPS route. The method is compared to two existing roundness measure and is shown to outperform them in the presence of GPS noise. Our application is recreation outdoor game where players compete who can create roundest route.Conference Paper -
Towards geoprivacy guidelines for spatial data
(2018)Adjunct Proceedings of the 14th International Conference on Location Based ServicesThis paper proposes an approach towards practical privacy guidelines for the different stages of a research effort that collects and/or uses “sensitive” spatial data. Specifically, we focus on: a) initial tasks as prior to starting a survey, b) storing, anonymization, and assessment of datasets, and c) actions to eliminate disclosure from published data and deliverables or when datasets are shared with third parties.Conference Paper -
Using a Dynamic Sensor Network to Obtain Spatiotemporal Data in an Urban Environment
(2018)Adjunct Proceedings of the 14th International Conference on Location Based ServicesAlong with the rise of the smart city movement, Internet of Things is an upcoming phenomenon. Objects and devices are becoming more and more wirelessly interconnected, communicating information between themselves and to human beings. As an addition to static sensor networks that gather real-time environmental data, the feasibility of implementing a dynamic sensor network based on LoRa communication is researched. To achieve such a dynamic ...Conference Paper -
Quantifying Local Spatial Properties through LiDAR-based Isovists for an Evaluation of Opinion-based VGI in a VR Setup
(2018)Adjunct Proceedings of the 14th International Conference on Location Based ServicesWe aim to link VGI that expresses subjective opinions about a location to its spatial configuration. We present an approach to quantify the location’s spatial configuration by generating highly precise isovists based on LiDAR scans. The representativeness of opinion-based VGI and their relation the local spatial configuration can be tested in a VR setup in the lab. Further applications of LiDAR-based isovists are discussed.Conference Paper -
Probability Based Location Referencing Method – Statistical Evaluations and Estimated Probability Distributions
(2018)Adjunct Proceedings of the 14th International Conference on Location Based ServicesDynamic Location Referencing Methods are typically used for transferring location references from one map to another in such cases where no common databases and/or common structures are available. This paper describes the statistical evaluations and estimated probability distributions to be used in a “Probability Based Dynamic Location Referencing Method”. To obtain them, several random samples for specific criteria/attributes have been ...Conference Paper -
A Topological Structure for Ubiquitous and Mobile GIS with its Possible Application
(2018)Adjunct Proceedings of the 14th International Conference on Location Based ServicesThe widespread deployment of wireless network, mobile computing and positioning devices is pushing Location Based Services toward the era of ubiquitous and ambient intelligence. This article attends to provide a paradigm to treat objects in such information environments. An idea based on space and time partitioning is suggested. A logic-based framework for representing and reasoning about qualitative spatial relations over moving objects ...Conference Paper