Initial Evaluation of Accessibility and Design Awareness with 3-D Immersive Environments

This paper describes an effort to build and evaluate the effectiveness of an immersive 3-D visualization system to help increase the awareness that students have when designing software that has a high level of accessibility for the differently abled. The demonstration utilizes an immersive virtual reality (VR) environment in which we simulated two types of colorblindness in a generally familiar environment. We report on the initial trial of this tool and the results of student surveys designed to assess impact on student perception and understanding and demonstrate that the use of virtual environments can give students greater empathy for individuals with visual impairments

Management of Rural Water Services in Nicaragua: A Systematic Network Approach to Evaluating Stakeholder Alignment

Water sector literature attributes a substantial cause of rural water system failure in developing countries to poor alignment between water service stakeholders. This study aimed to investigate a means for assessing stakeholder alignment by comparing the systemic interaction of stakeholder values, where the term ‘stakeholder values’ refers to aspects stakeholders believe are necessary to ensure rural water services are sustainable. The research held focus groups with key stakeholder groups involved in the management of rural water infrastructure in Terrabona, Nicaragua, to identify stakeholder values, and then used cross-impact analysis to evaluate how these values interacted to form stakeholder value networks (SVNs). Using normalized betweenness centrality measures, the structures of SVNs were compared to determine alignment. Results from this study showed high levels of stakeholder alignment on the topics of water resources and technology for the sustainability of rural water systems, while there was marked nonalignment regarding the involvement of local government and organizations in the management of water infrastructure. This study offers compelling evidence for future studies to assess stakeholder alignment by identifying and structurally analyzing SVNs

Factors Influencing Revenue Collection for Preventative Maintenance of Community Water Systems: A Fuzzy-Set Qualitative Comparative Analysis

This study analyzed combinations of conditions that influence regular payments for water service in resource-limited communities. To do so, the study investigated 16 communities participating in a new preventive maintenance program in the Kamuli District of Uganda under a public–private partnership framework. First, this study identified conditions posited as important for collective payment compliance from a literature review. Then, drawing from data included in a water source report and by conducting semi-structured interviews with households and water user committees (WUC), we identified communities that were compliant with, or suspended from, preventative maintenance service payments. Through qualitative analyses of these data and case knowledge, we identified and characterized conditions that appeared to contribute to these outcomes. Then, we employed fuzzy-set qualitative comparative analysis (fsQCA) to determine the combinations of conditions that led to payment compliance. Overall, the findings from this study reveal distinct pathways of conditions that impact payment compliance and reflect the multifaceted nature of water point sustainability. Practically, the findings identify the processes needed for successful payment compliance, which include a strong WUC with proper support and training, user perceptions that the water quality is high and available in adequate quantities, ongoing support, and a lack of nearby water sources. A comprehensive understanding of the combined factors that lead to payment compliance can improve future preventative maintenance programs, guide the design of water service arrangements, and ultimately increase water service sustainability

Initial Evaluation of Accessibility and Design Awareness with 3-D Immersive Environments

This paper describes an effort to build and evaluate the effectiveness of an immersive 3-D visualization system to help increase the awareness that students have when designing software that has a high level of accessibility for the differently abled. The demonstration utilizes an immersive virtual reality (VR) environment in which we simulated two types of colorblindness in a generally familiar environment. We report on the initial trial of this tool and the results of student surveys designed to assess impact on student perception and understanding and demonstrate that the use of virtual environments can give students greater empathy for individuals with visual impairments

Information Theoretic Estimation of Clone Overlap Probabilities

This technical report describes preliminary research investigating the relationship between information theory and Bayes\u27 theory for estimation of the probability of clone overlap for the use in DNA restriction mapping. A number of languages (along with information theoretic metrics) capable of describing a hypothesized overlap are presented. For each language, the MML criterion is applied to the encoded overlaps of a pair of clones to search for that overlap which is most probable. The objective is to order the pair\u27s encoded overlaps, based on the MML criterion, from the most to the least probable. This ordering is compared to the ordering suggestion by the Bayesian probabilistic approach

How Applying Instrumental Stakeholder Theory Can Provide Sustainable Competitive Advantage

Instrumental stakeholder theory considers the performance consequences for firms of highly ethical relationships with stakeholders, characterized by high levels of trust, cooperation, and information sharing. While research suggests performance benefits, an obvious question remains: If instrumental stakeholder theory-based stakeholder treatment is so valuable, why isn\u27t it the dominant mode of relating to stakeholders? We argue that the existing instrumental stakeholder theory literature has three shortcomings that limit its ability to explain variance in performance. (1) Little theory exists around how instrumental stakeholder theory-based stakeholder management could provide sustainable competitive advantage. (2) The literature has largely neglected the potential downsides (i.e., costs) associated with pursuing these sorts of stakeholder relationships. (3) There is a paucity of theory on the contexts in which the incremental benefits of instrumental stakeholder theory-based stakeholder relationships are most likely to exceed the costs. As our primary contribution, we develop a theoretical path from a communal sharing relational ethics strategy--characterized by an intention to rely on relational contracts, joint wealth creation, high levels of mutual trust and cooperation, and communal sharing of property--to a close relationship capability, which we argue is valuable, rare, and difficult to imitate and, thus, a potential source of sustainable competitive advantage. We also consider the potential costs of achieving this capability and identify contexts in which the resulting relationships are likely to have the greatest net value

Instrumental Stakeholder Theory Makes Ethically Based Relationship Building Palatable to Managers Focused on the Bottom Line

We appreciate the opportunity to engage in this dialogue with Weitzner and Deutsch (2019) to clarify the meaning and intent of some of the arguments found in our article, “How Applying Instrumental Stakeholder Theory Can Provide Sustainable Competitive Advantage” (Jones, Harrison, & Felps, 2018). We are grateful for the high praise from the authors regarding the rigor and logic of our applications of resource-based criteria to instrumental stakeholder theory (IST). We begin this response by highlighting a few areas of agreement, followed by some points where we disagree

Recruiting VR Troopers: Bringing Introductory Programming Projects to Life in Virtual Reality

Classes in introductory programming often focus on solving small, succinct problems that can typically be completed in few lines of source code. While useful for learning the basics of algorithm implementation and language syntax, this method suggests to learners that all programming problems exist in isolation and are self-contained. In contrast, most programming assignments faced by fresh graduates are large in scope and require use of many pre-built libraries and extensions. As a result, students are not entirely prepared to write code that will function within a larger system. To address this problem, an introductory C programming course at Valparaiso University has explored the use of virtual reality as a means to motivate students to have fun while practicing coding skills and showcase the power of working within constraints of a complex system. Students are provided a brief introduction to the OpenGL 3D graphics framework and then asked to design a small, optionally animated, scene using their current knowledge of the C programming language. Later in the semester, these same students are brought into a VisCube Virtual Reality system to experience their scenes in a fully immersive environment. The VisCube uses eight rendering paths and stereo displays to generate a 3D scene in a 10’x8’x6’ cube. This exercise serves to show students that even a simple scene can then easily expanded to display in a virtual reality environment. We discuss the project assignment and student impacts using assessment and provide a brief discussion of how this can be adapted to facilities with other viualization capabilities

Design and implementation of robotic control for industrial applications

Background: With the pressing need for increased productivity and delivery of end products of uniform quality, industry is turning more and more to computer-based automation. At the present time, most of industrial automated manufacturing is carried out by specialpurpose machines, designed to perform specific functions in a manufacturing process. The inflexibility and generally high cost of these machines often referred to as hard automation systems, have led to a broad-based interest in the use of robots capable of performing a variety of manufacturing functions in a more flexible working environment and at lower production costs. A robot is a reprogrammable general-purpose manipulator with external sensors that can perform various assembly tasks. A robot may possess intelligence, which is normally due to computer algorithms associated with its controls and sensing systems. Industrial robots are general-purpose, computer-controlled manipulators consisting of several rigid links connected in series by revolute or prismatic joints. Most of today’s industrial robots, though controlled by mini and microcomputers are basically simple positional machines. They execute a given task by playing back a prerecorded or preprogrammed sequence of motion that has been previously guided or taught by the hand-held control teach box. Moreover, these robots are equipped with little or no external sensors for obtaining the information vital to its working environment. As a result robots are used mainly for relatively simple, repetitive tasks. More research effort has been directed in sensory feedback systems, which has resulted in improving the overall performance of the manipulator system. An example of a sensory feedback system would be: a vision Charge-Coupled Device (CCD) system. This can be utilized to manipulate the robot position dependant on the surrounding robot environment (various object profile sizes). This vision system can only be used within the robot movement envelop