Alan Penn

According to our database, Alan Penn authored at least 23 papers between 1971 and 2022.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of four.

2022

Safely reducing unnecessary benign breast biopsies by applying non-mass and DWI directional variance filters to ADC thresholding.

Alan Penn, Milica Medved, Hiroyuki Abe, Vandana Dialani, Gregory S. Karczmar, David Brousseau

BMC Medical Imaging, 2022

2021

Aha! I know where I am: the contribution of visuospatial cues to reorientation in urban environments.

Efrosini Charalambous, Sean Hanna, Alan Penn

Spatial Cogn. Comput., 2021

An investigation into the cognitive, metacognitive, and spatial markers of creativity and efficiency in architectural design.

Kinda Al-Sayed, Peter C.-H. Cheng, Alan Penn

Artif. Intell. Eng. Des. Anal. Manuf., 2021

2020

Discrimination of benign from malignant breast lesions in dense breasts with model-based analysis of regions-of-interest using directional diffusion-weighted images.

Alan I. Penn, Milica Medved, Vandana Dialani, Etta D. Pisano, Elodia B. Cole, David Brousseau, Gregory S. Karczmar, Guimin Gao, Barry D. Reich, Hiroyuki Abe

BMC Medical Imaging, 2020

2014

A framework for simulating large-scale complex urban traffic dynamics through hybrid agent-based modelling.

Ed Manley, Tao Cheng, Alan Penn, Andy Emmonds

Comput. Environ. Urban Syst., 2014

2013

My neighbourhood: Studying perceptions of urban space and neighbourhood with moblogging.

Danae Stanton Fraser, Tim Jay, Eamonn O'Neill, Alan Penn

Pervasive Mob. Comput., 2013

2010

Exploring Digital Encounters in the Public Arena.

Ava Fatah gen. Schieck, Vassilis Kostakos, Alan Penn

Proceedings of the Shared Encounters, 2010

Brief encounters: Sensing, modeling and visualizing urban mobility and copresence networks.

Vassilis Kostakos, Eamonn O'Neill, Alan Penn, George Roussos, Dikaios Papadogkonas

ACM Trans. Comput. Hum. Interact., 2010

2007

Brief encounter networks

Vassilis Kostakos, Eamonn O'Neill, Alan Penn

CoRR, 2007

2006

Designing Urban Pervasive Systems.

Vassilis Kostakos, Eamonn O'Neill, Alan Penn

Computer, 2006

Instrumenting the City: Developing Methods for Observing and Understanding the Digital Cityscape.

Eamonn O'Neill, Vassilis Kostakos, Tim Kindberg, Ava Fatah gen. Schieck, Alan Penn, Danae Stanton Fraser, Tim Jones

Proceedings of the UbiComp 2006: Ubiquitous Computing, 2006

Moving office: inhabiting a dynamic building.

Holger Schnädelbach, Alan Penn, Phil Steadman, Steve Benford, Boriana Koleva, Tom Rodden

Proceedings of the 2006 ACM Conference on Computer Supported Cooperative Work, 2006

Engaging with a situated display via picture messaging.

Karen Martin, Alan Penn, Lesley Gavin

Proceedings of the Extended Abstracts Proceedings of the 2006 Conference on Human Factors in Computing Systems, 2006

2005

The system-user paradox: do we need models or should we grow ecologies?

Alan Penn

Proceedings of the Task Models and Diagrams for User Interface Design: Proceedings of the Forth International Workshop on Task Models and Diagrams for User Interface Design, 2005

2001

Preliminary performance analysis of breast MRI CAD system.

Alan I. Penn, Nitin Kumar, Scott F. Thompson, Mitchell D. Schnall, Fei Wang, Constantine Gatsonis

Proceedings of the Medical Imaging 2001: Image Processing, 2001

2000

Sketching space.

Alasdair Turner, David Chapman, Alan Penn

Comput. Graph., 2000

Fractal discrimination of MRI breast masses using multiple segmentations.

Alan I. Penn, Scott F. Thompson, Mitchell D. Schnall, Murray H. Loew, Lizann Bolinger

Proceedings of the Medical Imaging 2000: Image Processing, 2000

1999

Sketching a virtual environment: modeling using line-drawing interpretation.

Alasdair Turner, David Chapman, Alan Penn

Proceedings of the ACM Symposium on Virtual Reality Software and Technology, 1999

Statistical fractal border features for mammographic breast mass analysis.

Alan I. Penn, Scott F. Thompson, Murray H. Loew, Radhika Sivaramakrishna, Kimerly A. Powell

Proceedings of the Medical Imaging 1999: Image Processing, 1999

1998

Statistical fractal border features for MRI breast mass images.

Alan I. Penn, Lizann Bolinger, Murray H. Loew

Proceedings of the Medical Imaging 1998: Image Processing, 1998

1997

Estimating Fractal Dimensions with Fractal Interpolation Function Models.

Alan I. Penn, Murray H. Loew

IEEE Trans. Medical Imaging, 1997

1996

Estimating fractal dimension of medical images.

Alan I. Penn, Murray H. Loew

Proceedings of the Medical Imaging 1996: Image Processing, 1996

1971

A Generalized Lagrange-Multiplier Method for Constrained Matrix Games.

Alan I. Penn

Oper. Res., 1971