The value of community technology workers for LPG use: A pilot in Shirati, Tanzania

Background Sustainable Development Goal (SDG) 7 calls for the adoption and continued use of clean-burning stoves by the 2.9 billion people relying on unclean fuels (both solid biomass and kerosene). However, to date, the clean cooking literature has found low rates of efficient stove adoption and continued use. This paper presents the application of a public health community engagement model to the use of clean cooking fuels. We implemented a pilot study with Community Technology Workers (CTWs) as a means to overcome maintenance, education, and behavioral barriers to clean fuel use in rural Tanzania. Methods The intervention was a free 6 kg Liquified Petroleum Gas (LPG) cylinder and stove coupled with education from a local technically trained CTW on LPG use. We evaluated the training, work, and impact of a CTW on LPG use on 30 randomly selected households from two villages in a rural district of Tanzania over a 1-year period. After an initial baseline survey, technically trained local CTWs educated the households on safe LPG use and conducted 34 follow up surveys over the next year on their cooking fuel use. Additionally, we conducted qualitative interviews with all households and a focus group with six of the households. Results The results from the mixed methods approach show that 80% of families (n = 24) consistently refilled their LPG cylinders and ~ 40% of households exclusively used LPG. Households reported appreciating the CTWs’ visits for providing education and maintenance support, giving them confidence to use LPG safely, reminding them to save for their cylinder, and providing a community driven effort to use clean fuel. Conclusions The findings demonstrate the feasibility of this type of community infrastructure model to promote and facilitate consistent LPG use, but suggest the need to couple this local support with financial mechanisms (e.g., a microsavings program). This model could be a mechanism to increase LPG use, particularly in rural, low-income areas.

Designing Disease-Specific mHealth Apps for Clinical Value

mHealth apps for patient use are promising but continue to face a plateau in usage. Current apps work for a limited segment of the patient population, i.e., those who enjoy tracking for intrinsic rewards. There are many opportunities to support patient care in between health care provider visits that are not currently being met for many diseases and patient types (personas). This is an area of great potential growth for mHealth apps and could contribute greatly to patient health and wellness. In this chapter, we propose a framework for how to think about the between-visit needs of patients that would motivate continued use of mhealth apps. We view the app design process from the following perspectives: 1) disease-specific needs, 2) non-disease specific needs, 3) behavioral theoretical aspects of app usage and 4) app-intrinsic usage motivators. Myasthenia gravis serves as the use case for illustrating these perspectives and how to use them in designing a disease-specific mHealth app.

Reversing insecticide resistance with allelic-drive in Drosophila melanogaster

A recurring target-site mutation identified in various pests and disease vectors alters the voltage gated sodium channel (vgsc) gene (often referred to as knockdown resistance or kdr) to confer resistance to commonly used insecticides, pyrethroids and DDT. The ubiquity of kdr mutations poses a major global threat to the continued use of insecticides as a means for vector control. In this study, we generate common kdr mutations in isogenic laboratory Drosophila strains using CRISPR/Cas9 editing. We identify differential sensitivities to permethrin and DDT versus deltamethrin among these mutants as well as contrasting physiological consequences of two different kdr mutations. Importantly, we apply a CRISPR-based allelic-drive to replace a resistant kdr mutation with a susceptible wild-type counterpart in population cages. This successful proof-of-principle opens-up numerous possibilities including targeted reversion of insecticide-resistant populations to a native susceptible state or replacement of malaria transmitting mosquitoes with those bearing naturally occurring parasite resistant alleles.

Descartes on fermentation in digestion: iatromechanism, analogy and teleology

Fermentation is a cornerstone phenomenon in Cartesian physiology, accounting for processes such as digestion or blood formation. I argue that the previously unrecognized conceptual tension between the terms ‘fermentation’ and ‘concoction’ reflects Descartes's efforts towards a novel, more thoroughly mechanistic theory of physiology, set up against both Galenism and chymistry. Similarities with chymistry as regards fermentation turn out either epistemologically superficial, or based on shared earlier sources. Descartes tentatively employs ‘fermentation’ as a less teleological alternative to ‘concoction’, later renouncing the explicit use of the term, possibly to avoid chymical overtones. However, his continued use of analogies with fermentative processes in the natural world and in winemaking, coupled with a strong ontological commitment (the stance that the physiological processes are actual fermentations), leads to a reintroduction of natural teleology in his medical system, which I argue may be understood in an Aristotelian sense of ‘simple necessity’. The paper reveals a more nuanced account of Cartesian fermentative medicine, delineating some of its tensions with regard to chymistry as they play out in the dynamics of fermentation and concoction, and linking the analogies to fermentation processes to the difficulties in erasing teleology altogether.

E-Portfolios and Exploring One’s Identity in Teacher Education

Academic faculty in a two-year post-baccalaureate teacher education program at a small research university in British Columbia explored the extended use of e-Portfolios into final practicum over a three-year period. The education technology course offered in Term Three asked teacher candidates to create and design an e-Portfolio as part of the coursework. In this program evaluation, the author investigated the continued use of e-Portfolios into Term Four during final practicum. Faculty in this teacher education program sought ways to improve the program, particularly the practicum experience for teacher candidates. Extending the use of e-Portfolios into Term Four was one of three initiatives that were adopted. The e-Portfolio served as a digital platform for teachercandidates to archive, reflect, and sense-make; italso functioned as a means to develop theirprofessional identities and understanding of theprofessional standards. The final practicumconcluded with a Celebration of Learning and thecapstone presentations referenced e-Portfolios.This paper focuses on how e-Portfolios wereintroduced and implemented with six cohorts, whatwas observed by the faculty member, and whatwas learned from the implementation to inform thefuture use of e-Portfolios in the program andprogram redesign. The extended use of e-Portfolios during the final practicum was found tobe a viable initiative and revealed professionalqualities of teacher candidates that may not havebeen visible otherwise.

Privacy or Security: Does It Matter for Continued Use Intention of Travel Applications?

Mobile applications (apps) critically affect travelers’ decision-making and shape their experiences. Grounded in the expectancy value approach, this study examines the relationships among expectation confirmation (usefulness, ubiquity, ease of use, incentives, and enjoyment), privacy protection, security, satisfaction, and trust, and how these factors influence travel app users’ intention to continue using the app. Phase One of the study analyzed data from 509 survey respondents via structural equation modeling. The findings show that expectation confirmation, security, satisfaction, and trust influence travelers’ intention to continue using the travel app, whereas privacy protection exerts no significant effects. Travel app users’ level of technology proficiency moderates the effect of perceived security and satisfaction on the intention to continue use. In Phase Two, semi-structured interviews were conducted to explore the key findings from Phase One. This study contributes to the literature by examining expectation confirmation, perceived values of privacy protection, and security of travel app users in a single model to explain individuals’ satisfaction, trust, and continued use intention. The study findings also offer strategic implications for travel app developers as well as hospitality and tourism service providers and marketers on how to deliver a high-quality experience, enhance satisfaction and trust, and increase continued use intention among travel app users.