Dynamic Demand for New and Used Durable Goods without Physical Depreciation Masakazu Ishihara Doctor of Philosophy Joseph L. Rotman School of Management University of Toronto 2011 This thesis studies the interaction between new and used durable goods without physical depreciation. In product categories such as CDs/DVDs and video games, the competition from used goods markets has been viewed as ...

Color vision deficiency (CVD) occurs when there is an error in the development of one or more types of retinal cone cells that receive color in light and transmit that information to the optic nerve (1). Among them, red-green CVD shows the highest prevalence (2). Red-Green CVD is divisible into severe or dichromatic forms [protanopia and deu-teranopia] and milder or anomalous trichromatic forms...

In this paper, the effect of protan CVD algorithm is analyzed. Using algorithm, theimages are recolored, so that they suitable for use by people. first part, a trichromaticanomaly protanomaly type described. After that, The second part ofthe paper describes Experiment in which effectiveness was tested. algorithmwas applied to images from Ishihara color blindness test database, were purposely fo...

BACKGROUND Color blindness is a common X-linked genetic disorder. However, most of color blinds remain undetected due to absence of proper screening. Our study was to determine the prevalence of red-green color vision defects among Manipuri Muslim males and females. The study could help in decreasing birth of children with this disorder as Muslims commonly perform consanguineous marriage among ...

Background: Pseudoisochromatic color vision tests are commonly used to screen for deficiency (CVD). Although most normal (CVN) individuals read all plates correctly, a remarkable proportion have errors. Objective: This study aimed determine the typical and atypical error responses Ishihara Waggoner PIP24 (W-PIP24) of CVN CVD individuals. Methods: recruited 59 63 congenital red-green Participant...

The incidence of color blindness varies from race to race and different in different geographical area. Since, there is no such report about the prevalence of color blindness in the western part of Nepal, the present study had been conducted to find out the incidence of color blindness among school children of Pokhara city, western Nepal. Participant's (n=964, 474 boys, 490 girls, age group 10 ...

Clinical color-vision tests are evaluated within the framework of a model of chromatic discrimination in terms of cone excitation. The motivation for this study was to derive a method for evaluation of test design, test sensitivity, and observer performance. The discrimination model is based on the assumption that chromatic discrimination is mediated in two independent channels, one for short-w...

PURPOSE To determine the prevalence of color vision deficiency (CVD) and its correlation with amblyopia and refractive errors among primary school children. METHODS In this population-based cross-sectional study, 2160 children were selected from 36 primary schools; 60 students were from each school (10 students in each grade), with equal sex distribution. A complete eye examination including ...