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Full-Text Articles in Social and Behavioral Sciences

Segmenting Human Trajectory Data By Movement States While Addressing Signal Loss And Signal Noise, Sungsoon Hwang, Cynthia Vandemark, Navdeep Dhatt, Sai Yalla, Ryan Crews Dec 2017

Segmenting Human Trajectory Data By Movement States While Addressing Signal Loss And Signal Noise, Sungsoon Hwang, Cynthia Vandemark, Navdeep Dhatt, Sai Yalla, Ryan Crews

Sungsoon Hwang

This paper considers the problem of partitioning an individual GPS
trajectory data into homogeneous, meaningful segments such as
stops and trips. Signal loss and signal noise are highly prevalent in
human trajectory data, and it is challenging to deal with uncertainties
in segmentation algorithms. We propose a new trajectory
segmentation algorithm that detects stop segments in a noiserobust
manner from GPS data with time gaps. The algorithm consists
of three steps that impute time gaps, split data into base
segments and estimate states over a base segment. The statedependent
path interpolation was proposed as a framework for
gap imputation to …


Using A Social-Ethical Framework To Evaluate Location-Based Services In An Internet Of Things World, Roba Abbas, Katina Michael, Mg Michael May 2015

Using A Social-Ethical Framework To Evaluate Location-Based Services In An Internet Of Things World, Roba Abbas, Katina Michael, Mg Michael

Associate Professor Katina Michael

The idea for an Internet of Things has matured since its inception as a concept in 1999. People today speak openly of a Web of Things and People, and even more broadly of an Internet of Everything. As our relationships become more and more complex and enmeshed, through the use of advanced technologies, we have pondered on ways to simplify flows of communications, to collect meaningful data, and use them to make timely decisions with respect to optimisation and efficiency. At their core, these flows of communications are pathways to registers of interaction, and tell the intricate story of outputs …


Using A Social-Ethical Framework To Evaluate Location-Based Services In An Internet Of Things World, Roba Abbas, Katina Michael, Mg Michael May 2015

Using A Social-Ethical Framework To Evaluate Location-Based Services In An Internet Of Things World, Roba Abbas, Katina Michael, Mg Michael

Dr Roba Abbas

The idea for an Internet of Things has matured since its inception as a concept in 1999. People today speak openly of a Web of Things and People, and even more broadly of an Internet of Everything. As our relationships become more and more complex and enmeshed, through the use of advanced technologies, we have pondered on ways to simplify flows of communications, to collect meaningful data, and use them to make timely decisions with respect to optimisation and efficiency. At their core, these flows of communications are pathways to registers of interaction, and tell the intricate story of outputs …


Location And Tracking Of Mobile Devices: Überveillance Stalks The Streets, Katina Michael, Roger Clarke Dec 2012

Location And Tracking Of Mobile Devices: Überveillance Stalks The Streets, Katina Michael, Roger Clarke

Professor Katina Michael

During the last decade, location-tracking and monitoring applications have proliferated, in mobile cellular and wireless data networks, and through self-reporting by applications running in smartphones that are equipped with onboard global positioning system (GPS) chipsets. It is now possible to locate a smartphone-user's location not merely to a cell, but to a small area within it. Innovators have been quick to capitalise on these location-based technologies for commercial purposes, and have gained access to a great deal of sensitive personal data in the process. In addition, law enforcement utilise these technologies, can do so inexpensively and hence can track many …


Evidence For Discrete Landmark Use By Pigeons During Homing, Cordula V. Mora, Jeremy D. Ross, Peter V. Gorsevski, Budhaditya Chowdhury, Verner P. Bingman Jan 2012

Evidence For Discrete Landmark Use By Pigeons During Homing, Cordula V. Mora, Jeremy D. Ross, Peter V. Gorsevski, Budhaditya Chowdhury, Verner P. Bingman

Cordula Mora

Considerable efforts have been made to investigate how homing pigeons (Columba livia f. domestica) are able to return to their loft from distant, unfamiliar sites while the mechanisms underlying navigation in familiar territory have received less attention. With the recent advent of global positioning system (GPS) data loggers small enough to be carried by pigeons, the role of visual environmental features in guiding navigation over familiar areas is beginning to be understood, yet, surprisingly, we still know very little about whether homing pigeons can rely on discrete, visual landmarks to guide navigation. To assess a possible role of discrete, visual …


The Social And Behavioral Implications Of Location-Based Services, Katina Michael, M.G. Michael Nov 2011

The Social And Behavioral Implications Of Location-Based Services, Katina Michael, M.G. Michael

Associate Professor Katina Michael

The social and behavioral implications of location-based services (LBS) are only now beginning to come to light in advanced markets where the services have been adopted by just a little over half the market (Microsoft 2011). Depending on one’s definition of what constitutes location-based services, statistics on the level of adoption differ considerably. While it is helpful to provide as broad a list of applications as possible in what constitutes LBS (e.g. everything from in-vehicle navigation systems to downloading a map using a computer), it can also cloud the real picture forming behind this emerging technology. Emerging not in the …


Cost-Benefit Analysis Of Reducing Crime Through Electronic Monitoring Of Parolees And Probationers, Stuart S. Yeh Jan 2010

Cost-Benefit Analysis Of Reducing Crime Through Electronic Monitoring Of Parolees And Probationers, Stuart S. Yeh

Stuart S Yeh

Objective: The objective of this study was to estimate the benefits and costs of using electronic monitoring (EM) and home detention to reduce crime committed by parolees and probationers. Method: Data from a national survey of state prison inmates was adjusted and used to estimate the number of crimes that would have been committed by all parolees and probationers over the course of one year in the absence of EM and home detention. The data were analyzed in combination with existing analyses of the effectiveness and costs of EM and home detention and the economic costs of crime to estimate …