Traffic Analysis in Random Delaunay Tessellations and Other Graphs

In this work we study the degree distribution, the maximum vertex and edge flow in non-uniform random Delaunay triangulations when geodesic routing is used. We also investigate the vertex and edge flow in Erd\"os-Renyi random graphs, geometric random graphs, expanders and random $k$-regular graphs. Moreover we show that adding a random matching to the original graph can considerably reduced the maximum vertex flow.Comment: Submitted to the Journal of Discrete Computational Geometr

An Assessment of Perceptions of Career Services Providing Job Search and Survival Skills Training

The area of Career Services on college and university campuses is ever-changing. The boom of technology makes it easier for students to find and examine job openings via the Internet and to put their resume on line. These advancements are good as they help Career Services office\u27s expand their job search services and provide the most current technology available to students while continuing to offer the traditional job search services. According to McBride and Muffin (1991), the main focus of Career Services has always been on helping students develop effective job search skills to obtain an interview and hopefully a job offer. However, few services are offered to students to help them develop skills to survive in the work force once they have obtained a job. Some colleges offer services geared toward adults such as the dislocated worker workshops offered by the state of Missouri, but similar services are not available to the student populations on college campuses. Therefore, the purpose of this study is to determine whether or not services geared towards providing job survival skills would be beneficial to undergraduate students by preparing them for the work world. If the workshops are found to be perceived as beneficial by the students, this would be valuable information for institutions across the nation, expanding Career Services to include job survival skills training

Education and Design: Using Human-Computer Interaction Case Studies to Learn

Computers are essentially an ever-present tool that can be used in almost any discipline to make work faster and easier. Creating these programs, however, such that they fulfill the needs of the customer is a challenging process given the uniqueness of the discipline and circumstance. Thus, the use of a programming design methodology can enable the computer program designer to create a better system that meets the needs of the customer. Teaching this process, or in essence how to design, is the focus of this work. In this paper we present how using case studies in Human-Computer Interaction, and more specifically displaying the evolution of a case study, increases a designer’s ability to learn and then apply this knowledge. We investigate how to use this design evolution within case studies and the effects it had on application, while also exploring how case studies can be used in educating computer scientists

Congruence modularity implies cyclic terms for finite algebras

An n-ary operation f : A(n) -> A is called cyclic if it is idempotent and f(a(1), a(2), a(3), ... , a(n)) = f(a(2), a(3), ... , a(n), a(1)) for every a(1), ... , a(n) is an element of A. We prove that every finite algebra A in a congruence modular variety has a p-ary cyclic term operation for any prime p greater than vertical bar A vertical bar

How does age-related macular degeneration affect real-world visual ability and quality of life? A systematic review

Objectives To review systematically the evidence of age-related macular degeneration (AMD) affecting real-world visual ability and quality of life (QoL). To explore trends in specific topics within this body of the literature. Design Systematic review. Methods A systematic literature search was carried out using MEDLINE, EMBASE, CINAHL, PsycINFO, PsychARTICLES and Health and Psychosocial Instruments for articles published up to January 2015 for studies including people diagnosed with AMD, assessing real-world visual ability or QoL as an outcome. Two researchers screened studies for eligibility. Details of eligible studies including study design, characteristics of study population and outcomes measured were recorded in a data extraction table. All included studies underwent quality appraisal using the Mixed Methods Appraisal Tool 2011 Version (MMAT). Results From 5284 studies, 123 were eligible for inclusion. A range of approaches were identified, including performance-based methods, quantitative and qualitative patient-reported outcome measures (PROMs). AMD negatively affects tasks including mobility, face recognition, perception of scenes, computer use, meal preparation, shopping, cleaning, watching TV, reading, driving and, in some cases, self-care. There is evidence for higher rates of depression among people with AMD than among community dwelling elderly. A number of adaptation strategies have been associated with AMD of varying duration. Much of the research fails to report the type of AMD studied (59% of included studies) or the duration of disease in participants (74%). Of those that do report type studied, the breakdown is as follows: wet AMD 20%, dry AMD 4% and both types 17%. Conclusions There are many publications highlighting the negative effects of AMD in various domains of life. Future research should focus on delivering some of this research knowledge into patient management and clinical trials and differentiating between the types of AMD