An evaluation of pupil preferences in language arts activities in grades six and seven

Thesis (M.Ed.)--Boston Universit

The Engineers' Bookshelf

Our perception of an object’s size arises from the integration of multiple sources of visual information including retinal size, perceived distance and its size relative to other objects in the visual field. This constructive process is revealed through a number of classic size illusions such as the Delboeuf Illusion, the Ebbinghaus Illusion and others illustrating size constancy. Here we present a novel variant of the Delbouef and Ebbinghaus size illusions that we have named the Binding Ring Illusion. The illusion is such that the perceived size of a circular array of elements is underestimated when superimposed by a circular contour – a binding ring – and overestimated when the binding ring slightly exceeds the overall size of the array. Here we characterize the stimulus conditions that lead to the illusion, and the perceptual principles that underlie it. Our findings indicate that the perceived size of an array is susceptible to the assimilation of an explicitly defined superimposed contour. Our results also indicate that the assimilation process takes place at a relatively high level in the visual processing stream, after different spatial frequencies have been integrated and global shape has been constructed. We hypothesize that the Binding Ring Illusion arises due to the fact that the size of an array of elements is not explicitly defined and therefore can be influenced (through a process of assimilation) by the presence of a superimposed object that does have an explicit size

Alterations in the morphology of the epidermis of human skin as a possible variable of skin function.

Dept. of Biological Sciences. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis1973 .M16. Source: Dissertation Abstracts International, Volume: 62-13, Section: A. Thesis (Ph.D.)--University of Windsor (Canada), 1974

Status is fine for the in-group but out-group members watch out: Examining an optimal model of face processing using eye-tracking

Face recognition is an important factor in everyday social interaction. Bruce and Young\u27s (1986) model of face processing has been largely accepted as a model for face processing, however, it fails to account for differential processing based on race. MacLin and MacLin (in press) propose the presence of a cognitive gating mechanism (CGM) that suggests different processing strategies are used for in-group and out-group members. To date, the model has only been examined using novel stimuli. The present research examined the model using famous and nonfamous African-American and Caucasian faces to determine if the CGM adequately explains the recognition of familiar faces. Reaction times and eye-movements were recorded while participants completed a racial categorization task or famousness classification task. Results indicate that familiarity with a face indeed plays a role in the processing of own- and other-race faces. Reaction times and eye-movements differed as a function of race, fame, and task type. Implications for a modified version of the CGM and other existing face models are discussed

Design iteration timing in new product development

Thesis (Ph. D.)--Massachusetts Institute of Technology, Sloan School of Management, 2008.Includes bibliographical references (p. 288-290).As companies compete to gain market share, increase profits and affect growth they often turn to concurrent engineering in an effort to bring new products to the market more quickly. Despite many anecdotal success stories, implementation of concurrent engineering can often prove difficult. As the pressure to bring new products to market increases, companies often compress their design iteration cycle times in an effort to develop products more quickly. In many cases, design cycles may overlap creating situations where learning opportunities (e.g. through testing) are missed and/or ignored. More perversely, compressing design iteration cycles can cause the creation of "phantom errors" and unnecessary rework as concurrent design activities iterate at different speeds. In this research, I use a system dynamics approach to develop a stylized simulation model of the design-build-test iteration cycle to explore the effects of cycle timing on learning. Specifically, I look at the frequency and timing of integration (build) test events and their effect on new product delivery time, quality, and development cost. This research adds to the existing literature in new product development, concurrent engineering, and system dynamics. Ultimately, the results serve to inform new product development project managers of the implications of design iteration timing on project performance and assist in the scheduling of integration events.by Daniel J. McCarthy.Ph.D

Preparing For Extended Field Tests of the Intelligent Water System

The Intelligent Water System, which improves access to clean water by autonomously monitoring and reporting on the health of hand pumps in developing countries, has been under development for several years. This development has included short-term prototype field tests in several countries. The design has matured to the point that an extended field trial to demonstrate performance and reliability has been requested by our client. In light of this, the team has implemented design changes to address issues from our most recent prototype field test and begun manufacture of the first five systems intended for installation in Burkina Faso. This poster highlights the code changes enabling more accurate determination of the volume of water pumped and the simplified mounting of the system’s Handle Motion Sensor.https://mosaic.messiah.edu/engr2021/1006/thumbnail.jp

Attention bias and anxiety in young children exposed to family violence

Background—Attention bias towards threat is associated with anxiety in older youth and adults and has been linked with violence exposure. Attention bias may moderate the relationship between violence exposure and anxiety in young children. Capitalizing on measurement advances, the current study examines these relationships at a younger age than previously possible. Methods—Young children (mean age 4.7, ±0.8) from a cross-sectional sample oversampled for violence exposure (N = 218) completed the dot-probe task to assess their attention biases. Observed fear/anxiety was characterized with a novel observational paradigm, the Anxiety Diagnostic Observation Schedule. Mother-reported symptoms were assessed with the Preschool-Age Psychiatric Assessment and Trauma Symptom Checklist for Young Children. Violence exposure was characterized with dimensional scores reflecting probability of membership in two classes derived via latent class analysis from the Conflict Tactics Scales: Abuse and Harsh Parenting. Results—Family violence predicted greater child anxiety and trauma symptoms. Attention bias moderated the relationship between violence and anxiety