The Urban Security Image Database (USID): development and validation of an image dataset for experimental studies on fear of crime

2021 ◽  
Author(s):  
Inês Guedes ◽  
Samuel Moreira ◽  
Carla Sofia Cardoso
Keyword(s):  
Fear Of Crime ◽  
Experimental Studies ◽  
Image Database ◽  
Image Dataset ◽  
Urban Security ◽  
Development And Validation

scholarly journals Disorder affects judgements about a neighbourhood: Police presence does not

2013 ◽  
Author(s):  
Jessica M Hill ◽  
Thomas V Pollet ◽  
Daniel Nettle
Keyword(s):  
Social Capital ◽  
Social Environment ◽  
Fear Of Crime ◽  
Experimental Studies ◽  
Environmental Cues ◽  
Effects Of Disorder ◽  
Police Presence ◽  
High Crime ◽  
Neighbourhood Disorder ◽  
People’S Perceptions

Many police forces operate a policy of high visibility in disordered neighbourhoods with high crime. However, little is known about whether increased police presence influences people’s beliefs about a neighbourhood’s social environment or their fear of crime. Three experimental studies compared people’s perceptions of social capital and fear of crime in disordered and ordered neighbourhoods, either with a police presence or no police presence. In all studies, neighbourhood disorder lowered perceptions of social capital, resulting in a higher fear of crime. Police presence or absence had no significant effect. The pervasive effects of disorder above other environmental cues are discussed.

scholarly journals Disorder affects judgements about a neighbourhood: Police presence does not

2013 ◽  
Author(s):  
Jessica M Hill ◽  
Thomas V Pollet ◽  
Daniel Nettle
Keyword(s):  
Social Capital ◽  
Social Environment ◽  
Fear Of Crime ◽  
Experimental Studies ◽  
Environmental Cues ◽  
Effects Of Disorder ◽  
Police Presence ◽  
High Crime ◽  
Neighbourhood Disorder ◽  
People’S Perceptions

Many police forces operate a policy of high visibility in disordered neighbourhoods with high crime. However, little is known about whether increased police presence influences people’s beliefs about a neighbourhood’s social environment or their fear of crime. Three experimental studies compared people’s perceptions of social capital and fear of crime in disordered and ordered neighbourhoods, either with a police presence or no police presence. In all studies, neighbourhood disorder lowered perceptions of social capital, resulting in a higher fear of crime. Police presence or absence had no significant effect. The pervasive effects of disorder above other environmental cues are discussed.

scholarly journals Characterization and Correction of the Geometric Errors in Using Confocal Microscope for Extended Topography Measurement. Part I: Models, Algorithms Development and Validation

Electronics ◽  
2019 ◽  
Vol 8 (7) ◽  
pp. 733 ◽  
Author(s):  
Wang ◽  
Gómez ◽  
Yu
Keyword(s):  
Experimental Studies ◽  
Measurement Data ◽  
Confocal Microscope ◽  
Geometric Error ◽  
Linear Displacement ◽  
Geometric Errors ◽  
Scale Calibration ◽  
Squareness Errors ◽  
Kinematic Modelling ◽  
Development And Validation

This work presents a method for characterizing and correcting the geometric errors of the movement of the lateral stage of Imaging Confocal Microscope (CM) in extended topography measurement. For an extended topography measurement, a defined number of 2D images are taken and stitched by correlation methods. Inaccuracies due to linear displacement, vertical and horizontal straightness errors, angular errors, and squareness errors based on the assumption of the rigid body kinematics are described. A mathematical model for the scale calibration of the X- and Y- coordinates is derived according to the system kinematics, the axis chain vector of CM, and the geometric error functions and their approximations by Legendre polynomials. The correction coefficients of the kinematic modelling are determined by the measured and certified data of a dot grid target standard artefact. To process the measurement data, algorithms for data partitions, fittings of cylinder centers, and determinations of coefficients are developed and validated. During which methods such as form removal, K-means clustering, linear and non-linear Least Squares are implemented. Results of the correction coefficients are presented in Part II based on the experimental studies. The mean residual reduces 29.6% after the correction of the lateral stage errors.

3-D reconstruction and analysis of mammalian mitotic spindle structure

1992 ◽  
Vol 50 (1) ◽  
pp. 578-579
Author(s):  
Kent McDonald ◽  
David Mastronarde ◽  
Rubai Ding ◽  
Eileen O'Toole ◽  
J. Richard McIntosh
Keyword(s):  
Cross Sections ◽  
Mitotic Spindle ◽  
Experimental Studies ◽  
Video Camera ◽  
Three Dimensions ◽  
Mitotic Spindles ◽  
Black And White ◽  
Reconstruction Methods ◽  
Spindle Structure ◽  
Tissue Culture Line

Mammalian spindles are generally large and may contain over a thousand microtubules (MTs). For this reason they are difficult to reconstruct in three dimensions and many researchers have chosen to study the smaller and simpler spindles of lower eukaryotes. Nevertheless, the mammalian spindle is used for many experimental studies and it would be useful to know its detailed structure.We have been using serial cross sections and computer reconstruction methods to analyze MT distributions in mitotic spindles of PtK cells, a mammalian tissue culture line. Images from EM negatives are digtized on a light box by a Dage MTI video camera containing a black and white Saticon tube. The signal is digitized by a Parallax 1280 graphics device in a MicroVax III computer. Microtubules are digitized at a magnification such that each is 10-12 pixels in diameter.

18: Measuring Quality-of-Life after Surgery: Development and Validation of the Convalescence and Recovery Evaluation (CARE)

2007 ◽  
Vol 177 (4S) ◽  
pp. 7-7
Author(s):  
Brent K. Hollenbeck ◽  
J. Stuart Wolf ◽  
Rodney L. Dunn ◽  
Martin G. Sanda ◽  
David P. Wood ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Development And Validation
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