Opening the Black Box: Explaining the Process of Basing a Health Recommender System on the I-Change Behavioral Change Model

Recommender systems are gaining traction in healthcare because they can tailor recommendations based on users' feedback concerning their appreciation of previous health-related messages. However, recommender systems are often not grounded in behavioral change theories, which may further increase the effectiveness of their recommendations. This paper's objective is to describe principles for designing and developing a health recommender system grounded in the I-Change behavioral change model that shall be implemented through a mobile app for a smoking cessation support clinical trial. We built upon an existing smoking cessation health recommender system that delivered motivational messages through a mobile app. A group of experts assessed how the system may be improved to address the behavioral change determinants of the I-Change behavioral change model. The resulting system features a hybrid recommender algorithm for computer tailoring smoking cessation messages. A total of 331 different motivational messages were designed using 10 health communication methods. The algorithm was designed to match 58 message characteristics to each user pro le by following the principles of the I-Change model and maintaining the bene ts of the recommender system algorithms. The mobile app resulted in a streamlined version that aimed to improve the user experience, and this system's design bridges the gap between health recommender systems and the use of behavioral change theories. This article presents a novel approach integrating recommender system technology, health behavior technology, and computer-tailored technology. Future researchers will be able to build upon the principles applied in this case study.European Union's Horizon 2020 Research and Innovation Programme under Grant 68112

Integrated analysis of engine structures

The need for light, durable, fuel efficient, cost effective aircraft requires the development of engine structures which are flexible, made from advaced materials (including composites), resist higher temperatures, maintain tighter clearances and have lower maintenance costs. The formal quantification of any or several of these requires integrated computer programs (multilevel and/or interdisciplinary analysis programs interconnected) for engine structural analysis/design. Several integrated analysis computer prorams are under development at Lewis Reseach Center. These programs include: (1) COBSTRAN-Composite Blade Structural Analysis, (2) CODSTRAN-Composite Durability Structural Analysis, (3) CISTRAN-Composite Impact Structural Analysis, (4) STAEBL-StruTailoring of Engine Blades, and (5) ESMOSS-Engine Structures Modeling Software System. Three other related programs, developed under Lewis sponsorship, are described

Addressing Tobacco in Managed Care Capstone Conference

Outlines discussions from the program's "Synthesizing Lessons Learned and Identifying Future Research Opportunities" conference. Highlights policy and healthcare changes proven effective in reducing tobacco use, successful strategies, and future visions

Alcuni abstract di articoli che trattano argomenti relativi all'eHealth

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A Minimal Contact Diet and Physical Activity Intervention for White-Collar Workers

Minimal contact lifestyle interventions with multiple components coupled with health screening have the potential to improve worker health. The purpose of this study was to test a minimal contact multiple component lifestyle diet and exercise intervention. The multiple components that were included in this project included a worksite health screening, brief counseling session, emailed newsletter, and a pedometer. In response to the intervention, participants reported an increase in green salad, fruit, and vegetable consumption as well as an increase in self-efficacy for consuming three servings of fruits and vegetables a day. Study participants also demonstrated a significant increase in physical activity as shown by their responses to the question, “During leisure time I walk.” A minimal contact multiple component worksite health promotion program with relatively high feasibility and low cost can improve workers’ health-related behaviors, and participants can become more aware of their health

The Permit Power Revisited: The Theory and Practice of Regulatory Permits in the Administrative State

Two decades ago, Professor Richard Epstein fired a shot at the administrative state that has gone largely unanswered in legal scholarship. His target was the permit power, under which legislatures prohibit a specified activity by statute and delegate to administrative agencies the discretionary power to authorize the activity under terms the agency mandates in a regulatory permit. Accurately describing the permit power as an enormous power in the state, Epstein bemoaned that it had received scant attention in the academic literature. He sought to fill that gap. Centered on the premise that the permit power represents a complete inversion of the proper distribution of power within a legal system, Epstein launched a scathing critique of regulatory permitting in operation, condemning it as a racket for administrative abuses and excesses. Epstein\u27s assessment of the permit power was and remains accurate in three respects: it is vast in scope, it is ripe for administrative abuse, and it has been largely ignored in legal scholarship. The problem is that, beyond what he got right about the permit power, most of Epstein\u27s critique was based on an incomplete caricature of permitting in theory and practice. This Article is the first to return comprehensively to the permit power since Epstein\u27s critique, offering a deep account of the theory and practice of regulatory permits in the administrative state. This Article opens by defining the various types of regulatory permits and describing the scope of permitting in the regulatory state. From there it compares different permit design approaches and explores the advantages of general permits, including their ability to mitigate many of the concerns Epstein advanced. This Article then applies a theoretical model to environmental degradation problems and concludes that if certain conditions are met, general permits can effectively respond to many of the complex policy problems of the future. Finally, this Article adds to the scholarship initiated by Epstein by proposing a set of default rules and exceptions for permit design and suggesting how they apply to complex policy problems

A Risk-Based Model Predictive Control Approach to Adaptive Interventions in Behavioral Health

This brief examines how control engineering and risk management techniques can be applied in the field of behavioral health through their use in the design and implementation of adaptive behavioral interventions. Adaptive interventions are gaining increasing acceptance as a means to improve prevention and treatment of chronic, relapsing disorders, such as abuse of alcohol, tobacco, and other drugs, mental illness, and obesity. A risk-based model predictive control (MPC) algorithm is developed for a hypothetical intervention inspired by Fast Track, a real-life program whose long-term goal is the prevention of conduct disorders in at-risk children. The MPC-based algorithm decides on the appropriate frequency of counselor home visits, mentoring sessions, and the availability of after-school recreation activities by relying on a model that includes identifiable risks, their costs, and the cost/benefit assessment of mitigating actions. MPC is particularly suited for the problem because of its constraint-handling capabilities, and its ability to scale to interventions involving multiple tailoring variables. By systematically accounting for risks and adapting treatment components over time, an MPC approach as described in this brief can increase intervention effectiveness and adherence while reducing waste, resulting in advantages over conventional fixed treatment. A series of simulations are conducted under varying conditions to demonstrate the effectiveness of the algorithm

Are there gender differences in perceived sexual self-efficacy among African-American adolescents?

Background: African American adolescents accounted for more than half of all HIV/AIDS cases in 2009. Behavioral Strategies are needed to help lessen the incidence of HIV/AIDS among this population. Purpose: The aim of his study was to examine sexual self-efficacy practices and beliefs among African American adolescents. We also examined gender differences between African American adolescents to better understand their perceptions of sexual self-efficacy, condom use intention, and other safer sex practices and beliefs. Methods: A cross-sectional study was conducted with 214 African American adolescents using survey instruments to examine their beliefs, perception and intentions on the use of condoms, sexual self-efficacy and safe sex practices. Participants were recruited though a mass media campaign and local youth serving organizations within Sedgwick County, KS. Results: Our findings indicate significant differences exist between genders in perception of sexual self-efficacy among African American adolescents. Females were found to have higher perceived sexual self-efficacy compared to males. Having high negotiation skills and a sexual partner who approved of condom use were significant predictors for high perceived sexual self-efficacy. Conclusions: African American adolescent females were more likely to have higher perceived sexual self-efficacy then African American male adolescents. Because of the dynamics that exist in male and female relationships and the mediating role sexual self-efficacy might play in engaging in safe sex practices, it is important to design gender specific interventions in order to curb the spread of HIV/AIDS and other STDS/STI’s

Experimental aeroelasticity history, status and future in brief

NASA conducts wind tunnel experiments to determine and understand the aeroelastic characteristics of new and advanced flight vehicles, including fixed-wing, rotary-wing and space-launch configurations. Review and assessments are made of the state-of-the-art in experimental aeroelasticity regarding available facilities, measurement techniques, and other means and devices useful in testing. In addition, some past experimental programs are described which assisted in the development of new technology, validated new analysis codes, or provided needed information for clearing flight envelopes of unwanted aeroelastic response. Finally, needs and requirements for advances and improvements in testing capabilities for future experimental research and development programs are described