Anachronism, Displacement, Trace. "Scarred Images" and the Postcolonial Time Lag

3D image-domain wavefield tomography using time-lag extended images

Image-domain wavefield tomography is a technique that reconstructs the velocity model by extracting information from migrated images. In time-lag extended images, velocity model accuracy can be evaluated by reflection focusing error, which represents the traveltime residual in the image domain. The model is updated by minimizing an objective function similar to the one used by wave-equation tra...

Stimulus trace in the mentally retarded: defect or developmental lag?

In order to determine whether the central organismic variable of stimulus trace theory, i.e., neural integrity (ni), was more closely related to MA or IQ, comparisons were made between digit span performance of groups who were matched on either MA or CA but who differed in IQ. Differences were found between normal, borderline, and retarded IQ groups matched on CA, but not between those matched ...

Generalized additive distributed lag models: quantifying mortality displacement.

There are a number of applied settings where a response is measured repeatedly over time, and the impact of a stimulus at one time is distributed over several subsequent response measures. In the motivating application the stimulus is an air pollutant such as airborne particulate matter and the response is mortality. However, several other variables (e.g. daily temperature) impact the response ...

Simulation enhanced distributed lag models for mortality displacement

Distributed lag models (DLM) are attractive methods for dealing with mortality displacement, however their estimates can have substantial bias when the data is generated by a multi-state model. In particular DLMs are not valid for mortality displacement. Alternative methods are scarce and lack feasibility and validation. We investigate the breakdown of DLM in three state models by means of simu...

Empire, Islam and the postcolonial