Sustaining Physical Activity Following Cardiac Rehabilitation Discharge

Because many patients reduce exercise following outpatient cardiac rehabilitation (CR), we developed an intervention to assist with the transition and evaluated its feasibility and preliminary efficacy using a one-group pretest–posttest design. Five CR patients were enrolled ~1 month prior to CR discharge and provided an activity tracker. Each week during CR they received a summary of their physical activity and steps. Following CR discharge, participants received an individualized report that included their physical activity and step history, information on specific features of the activity tracker, and encouraging messages from former CR patients for each of the next 6 weeks. Mixed model trajectory analyses were used to test the intervention effect separately for active minutes and steps modeling three study phases: pre-intervention (day activity tracking began to CR discharge), intervention (day following CR discharge to day when final report sent), and maintenance (day following the final report to ~1 month later). Activity tracking was successfully deployed and, with weekly reports following CR, may offset the usual decline in physical activity. When weekly reports ceased, a decline in steps/day occurred. A scaled-up intervention with a more rigorous study design with sufficient sample size can evaluate this approach further.

Fake Online News

Today, the media environment has traversed several phases of technological advancements and as a result, there is a shift in the production and consumption of news. This chapter conceived fake news within the milieu of influencing information spread in the society, especially on the cyberspace. Using the hierarchy of influence model trajectory with fake news, it was established that it has become almost impossible to sustain trust and credibility through individual influences on online news content. The primary reason is that journalists are constrained by professional ethics, organizational routines, and ownership influence. Rather than verify facts and offer supporting claims, online users without professional orientation engage in a reproducing information indiscreetly. The chapter recommends that ethics be reconsidered as a means to recreate and imbibe journalistic values that will contend with the fake news pandemic.

Straightening the Trajectory From Algebraic Models and Computer Modeling in Additional Construction

Рresents educational and research building model trajectory.

Fake Online News

Today, the media environment has traversed several phases of technological advancements and as a result, there is a shift in the production and consumption of news. This chapter conceived fake news within the milieu of influencing information spread in the society, especially on the cyberspace. Using the hierarchy of influence model trajectory with fake news, it was established that it has become almost impossible to sustain trust and credibility through individual influences on online news content. The primary reason is that journalists are constrained by professional ethics, organizational routines, and ownership influence. Rather than verify facts and offer supporting claims, online users without professional orientation engage in a reproducing information indiscreetly. The chapter recommends that ethics be reconsidered as a means to recreate and imbibe journalistic values that will contend with the fake news pandemic.

Phase Multistability of Dynamics Modes of the Ricker Model with Periodic Malthusian Parameter

The paper investigates the phase multistability of dynamical modes of the Ricker model with 2-year periodic Malthusian parameter. It is shown that both the variable perturbation and the phase shift of the Malthusian parameter can lead to a phase shift or a change in the dynamic mode observed. The possibility of switches between different dynamic modes is due to multistability, since the model has two different stable 2-cycles. The first stable 2-cycle is the result of transcritical bifurcation and is synchronous to the oscillations of the Malthusian parameter. The second stable 2-cycle arises as a result of the tangent bifurcation and is asynchronous to the oscillations of the Malthusian parameter. This indicates that two-year fluctuations in the population size can be both synchronous and asynchronous to the fluctuations in the environment. The phase shift of the Malthusian parameter causes a phase shift in the stable 4-cycle of the first bifurcation series to one or even three elements of the 4-cycle. The phase shift to two elements of this 4-cycle is possible due to a change in the half-amplitude of the Malthusian parameter oscillation or the variable perturbation. At the same time, the longer period of the cycle, the more phases with their attraction basins it has, and the smaller the threshold values above which shift from the attraction basin to another one occur. As a result, in the case of cycles with long period (for example, 8-cycle) perturbations, that stable cycles with short period are able to "absorb", can cause different phase transitions, which significantly complicates the dynamics of the model trajectory and, as a consequence, the identification of the dynamic mode observed.