scholarly journals The accuracy of geographic profiling methods based on the example of burglaries in Warsaw

2021 ◽  
pp. 51-65
Author(s):  
Michał Górski
Keyword(s):  
Series Length ◽  
Geographic Profiling ◽  
Error Distance

In the current study different geographic profiling methods were tested on a sample of burglaries in Warsaw. Overall 38 crime series were included in study, accuracy was measured as hit score and error distance. Results show limited obtained accuracy, comparably lower than what can be seen in similar tests conducted in western cities, but each method also shows improvement with series length. This shows that it is possible to use geographic profiling in polish setting, but also that there are significant limitations that one has to consider.

scholarly journals Forensic Geoarchaeology in the Search for Missing Persons

2021 ◽  
Vol 1 (1) ◽  
pp. 8-15
Author(s):  
Pier Matteo Barone ◽  
Rosa Maria Di Maggio ◽  
Silvia Mesturini
Keyword(s):  
Satellite Images ◽  
Social Phenomenon ◽  
Geographic Profiling ◽  
Missing Persons ◽  
The Social ◽  
Multispectral Satellite Images

Despite widespread concern over missing persons, there has always been little clarity on what the word “missing” means. Although the category of young runaways is, indeed, an important cluster, other popular concepts related to disappearances describe a portion of missing persons. Thus, the following question persists: What exactly does “missing” mean? In this brief communication, we would like to open a discussion about the social phenomenon of missing persons and the consequent deployment of people and techniques to find those persons. In particular, the benefits of some forensic geoarchaeological approaches that are not yet fully standardized will be highlighted, such as geographic profiling and the use of multispectral satellite images, in order to provide materials for future searching protocols.

Geoforensic Analysis Revisited—The Application of Newton’s Geographic Profiling Method to Serial Burglaries in London, UK

2007 ◽  
Vol 8 (4) ◽  
pp. 359-370 ◽  
Author(s):  
Michael Leitner ◽  
Joshua Kent ◽  
Ian Oldfield ◽  
Elizabeth Swoope
Keyword(s):  
Geographic Profiling

Online object tracking via bounded error distance

2016 ◽  
Vol 171 ◽  
pp. 1175-1184 ◽  
Author(s):  
Chunjuan Bo ◽  
Junxing Zhang ◽  
Jianjun He ◽  
Yuli Han
Keyword(s):  
Object Tracking ◽  
Bounded Error ◽  
Error Distance

scholarly journals The 443-Year Tree-Ring Chronology for the Scots Pine from Upper Silesia (Poland) as A Dating Tool and Climate Proxy

2015 ◽  
Vol 42 (1) ◽  
Author(s):  
Magdalena Opała
Keyword(s):  
Tree Ring ◽  
Scots Pine ◽  
Meteorological Data ◽  
Ring Width ◽  
Tree Ring Chronology ◽  
Series Length ◽  
Upper Silesia ◽  
Living Tree ◽  
Absolute Dating ◽  
The Mean

Abstract An annually resolved and absolutely dated ring-width chronology spanning 443 years has been constructed using the historical and living-tree Scots pine samples from the Upper Silesia, south of Poland. The constructed regional chronology, based on six object chronologies, covers the period of 1568-2010. It is composed of 178 wood samples with the mean correlation of 0.51, mean series length of 104 years and mean EPS of 0.85. In total, 65 extreme years were distinguished. Their inde-pendent verification, based on the historical and meteorological data, showed significant correlation with the exceptionally cold/mild winters as well as severe droughts. The comparison of the extreme years with the other Polish pine chronologies showed similarities in the years with the anomalous winter conditions. Some extreme years can be associated with the exceptional pluvial conditions; these years are common in the Central European hydroclimatic tree-ring records. The construction of this regional pine chronology enables for the absolute dating of many architectural monuments from investigated region. The application of the new chronology for the dating of local wood can support interpretations of changes in the environment of the Upper Silesian region. In the future it can also be used as the basis for climate reconstruction.

scholarly journals Bird’s-Eye View Provided in Real-time via Drone Improves Spatial Perception for Team Sports

2021 ◽  
Author(s):  
Satoshi Miura ◽  
Kento Nakagawa ◽  
Kazumasa Hirooka ◽  
Yuya Matsumoto ◽  
Yumi Umesawa ◽  
...  
Keyword(s):  
Real Time ◽  
Visual Feedback ◽  
Spatial Perception ◽  
Team Sports ◽  
Space Perception ◽  
Feedback System ◽  
Smart Glasses ◽  
Perceptual Abilities ◽  
Individual Sports ◽  
Error Distance

Abstract Sports-assisting technologies have been developed; however, most are to improve performances in individual sports such as ski, batting, and swimming. Few studies focused on team sports which require not only motor ability of individual players but also perceptual abilities to grasp positions of their own and others. In the present study, we aim to validate the feasibility of a visual feedback system for the improvement of space perception in relation to other persons that is necessary. Herein, the visual feedback system is composed of a flying drone that transmits the image to the participant’s smart glasses. With and without the system, the participant was able to see his/her own relative position in real time though the glass. Nine participants tried to position themselves on the line between two experimenters 30 m away from each other, which simulated the situation of a baseball cutoff man. As a result, the error distance between the participants’ position and the line significantly decreased when using the system than that without the system. Furthermore, after participants practiced the task with the system the error decreased compared to that before the practice. In conclusion, the real-time feedback system from the bird’s-eye view would work for improving the accuracy of space perception.

scholarly journals Virtual Environments for Sport Analysis: Perception-Action Coupling in Handball Goalkeeping

2009 ◽  
Vol 8 (4) ◽  
pp. 43-48 ◽  
Author(s):  
Nicolas Vignais ◽  
Benoit Bideau ◽  
Cathy Craig ◽  
Sébastien Brault ◽  
Franck Multon ◽  
...  
Keyword(s):  
Motor Task ◽  
Judgment Task ◽  
Perceptual Judgment ◽  
Task Condition ◽  
Sports Science ◽  
Radial Error ◽  
Judgment Condition ◽  
Action Coupling ◽  
Error Distance ◽  
Perception Action

In sports science, the link between the experimental protocol and the subject's behaviour in real condition is a key issue. Virtual reality enables to examine this topic because of the reproducibility of situations and the total control of animated humanoids in situations similar to the real world. This study aimed to analyze the influence of the degree of perception-action coupling on the performance of handball goalkeepers in a virtual environment. 8 national handball goalkeepers were asked to react to the actions of a virtual handball thrower in two conditions: a perception-action uncoupled condition (defined as a judgment task) and a perception-action coupled condition (defined as a motor task). In the judgment condition, goalkeepers were asked to make a perceptual judgment with their hand in their own time after the virtual throw; in the motor task condition, goalkeepers had to react in real-time to the virtual throwing motion. Results showed that percentage of successful response was higher in the motor task condition and radial error (distance between the ball and the closest limb when trial was unsuccessful) was lower for the same condition. Implications of our findings are discussed, as well as suggestions for further research..

scholarly journals Age differences in the precision of memory at short and long delays

2019 ◽  
Author(s):  
Stephen Rhodes ◽  
Emily E Abenne ◽  
Ashley M Meierhofer ◽  
Moshe Naveh-Benjamin
Keyword(s):  
Older Adults ◽  
Age Differences ◽  
Long Term Memory ◽  
Age Difference ◽  
Younger Adults ◽  
Recall Error ◽  
Successful Recall ◽  
Error Distance

Age differences are well established for many memory tasks assessing both short-term and long-term memory. However, how age differences in performance vary with increasing delay between study and test is less clear. Here we report two experiments in which participants studied a continuous sequence of object-location pairings. Test events were intermixed such that participants were asked to recall the precise location of an object following a variable delay. Older adults exhibit a greater degree of error (distance between studied and recalled locations) relative to younger adults at short (0-2 intervening events) and longer delays (10-25 intervening events). Mixture modeling of the distribution of recall error suggests that older adults do not fail to recall information at a significantly higher rate than younger adults. Instead, what they do recall appears to be less precise. Follow up analyses demonstrate that this age difference emerges following only one or two intervening events between study and test. These findings are consistent with the suggestion that aging does not greatly impair recall from the focus of attention but age differences emerge once information is displaced from this highly accessible state. Further, we suggest that age differences in the precision of memory, but not the probability of successful recall, may be due to the use of more gist-like representations in this task.

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