A lo largo de 2015, más del 75% de las app móviles (con independencia del ecosistema concreto: iOS, Android, Windows, etc.) fallará al ser sometidas a tests básicos de seguridad, según afirma la firma de análisis de mercado Gartner. Según cuenta Dionisio Zumerle, principal analista de investigación de la consultora, las compañías que en materia de smartphones“aplican políticas BYOD (siglas en inglés de ‘Trae Tu Propio Dispositivo’) son susceptibles de sufrir brechas de seguridad a menos que adopten métodos y tecnologías para probar la seguridad de sus aplicaciones móviles [...]. La mayoría de las empresas carecen de experiencia en este campo: incluso cuando se llevan a cambio pruebas, éstas son realizadas a menudo por parte de desarrolladores, en general más preocupados por la funcionalidad de las aplicaciones que por su seguridad”.
Investigadores de Dartmouth y sus colegas han construido la primera aplicación para teléfonos inteligentes que revela automáticamente la salud mental de los estudiantes, el rendimiento académico y las tendencias de comportamiento. En otras palabras, el teléfono inteligente sabe su estado de ánimo - incluso si usted no lo hace - y cómo esto le afecta.
Paving the way for future research in improving heart function by stimulating the vagus nerve, a preliminary study showed improvements in heart failure conditions when the nerve was stimulated in test subjects.
“We pooled the results of the left and right side vagus nerve stimulation because there were no major differences in outcomes based on which nerve is stimulated. We saw both improvements in objective measures of heart failure and in subjective measures,” the study’s principal investigator Inder Anand said.
Although cardiac pacemakers have saved countless lives, they do have at least one shortcoming – like other electronic devices, their batteries wear out. When this happens, of course, surgery is required in order to replace the pacemaker. While some researchers are looking into ideas such as drawing power from blood sugar, Swiss scientists from the University of Bern have taken another approach. They’ve developed a wristwatch-inspired device that can power a pacemaker via the beating of the patient’s own heart.
Bern cardiologist Prof. Rolf Vogel first came up with the idea four years ago, and it has been in development ever since. The resulting prototype device wasn’t just inspired by an auto-winding wristwatch, but actually incorporates the mechanism of a commercially-available model. Such watches rely on the user’s arm movements to wind a mechanical spring. Once that spring is fully wound, it then unwinds to power a micro-generator inside the watch.
In the case of the Bern device, it’s sutured onto the heart’s myocardial muscle instead of being worn on the wrist, and its spring is wound by heart contractions instead of arm movements. When that spring unwinds, the resulting energy is buffered in a capacitor. That capacitor then powers a pacemaker, to which it is electrically wired.
According to the research team, the system has demonstrated a mean output power of 52 microwatts when implanted in a live 60-kg (132-lb) pig – that’s more than enough for most modern pacemakers, which consume about 10 microwatts.
They now hope to further miniaturize the technology, make it more sensitive to the motion of the heart, and build both its energy-harvesting and capacitor functions into a pacemaker. This all-in-one setup would do away with the need for electrical leads, which can fail in conventional pacemakers.
The research was presented this Sunday at the ESC (European Society of Cardiology) Congress, by PhD candidate and team member Adrian Zurbuchen. A similar device is being developed at the University of Michigan.
El asunto es de gran envergadura, a través de cinco sensores para medir la temperatura del cuerpo con precisión centesimal y localizados en zonas concretas del cuerpo. El dispositivo es capaz de obtener 125 parámetros de una analítica sanguínea en apenas 6 minutos.
When using smartphones to assess mental health, researchers traditionally create apps that require the patient to manually update information. For example, for an app that helps track depression symptoms, you instruct the patient to either open the app, or respond to a notification on their phone to input various metrics.
This technique isn’t ideal as you have to rely on the content to be updated manually by the end user, often perceived as a hassle.
Researchers at Dartmouth created a study that addressed this issue by using an Android phone’s sensors to passively collect information. They created an app called StudentLife. The app collected the phone’s motion and location and the timing of phone calls and texts. The app kept track of sleep, kept an estimate of how often the person was involved in a face to face conversation (the microphone occasionally would be activated on the device), and had several other inputs.
The study included 48 students and the app collected information for a 10 week term. The Android phone used was a Google Nexus 4. For the first time, based on a phone’s native sensors, researchers were able to correlate patterns in behavior to stress, depression, and loneliness — these patterns even correlated with grades.
This study gives other researchers an example of how they can implement passive forms of data collection when studying behavior.
Una de las últimas novedades en medidores (por suerte, este año tenemos varias novedades) se llama Freestyle Libre, es de la multinacional Abbott y para quien no lo conozca, consiste en un dispositivo de medición de glucosa intersticial. Para entendernos, parecido (y digo parecido, porque no es lo mismo) a los medidores continuos de Medtronic o Dexcom. Un sensor implantado (y por tanto, invasivo) lee de manera continua la glucosa y un receptor recoge esos datos para mostrarlos al usuario.
Facebook, Google (YouTube, Google+), Twitter, LinkedIn and Yahoo (Tumblr) are the biggest players in social media – collectively, their platforms are used by billions of people around the world, and these organisations have a combined market value of hundreds of billions of dollars.
“consider this picture MOOCs -- massively open online courses of the sort that can simultaneously enroll thousands, even tens of thousands, of learners simultaneously -- have been a hot topic of discussion for a few years now in both the worlds of education and 'international development' (and, for what it's worth, the subject of numerous related posts here on the World Bank's EduTech blog). Recent news that edX, one of the prominent MOOC platforms, is to start offering courses aimed at high school students suggests that the potential usefulness and impact of things like MOOCs may soon extend beyond the realm of higher education, out of which MOOCs originally emerged and where most related activity has occurred to date. There is much (potentially) to be excited about here. Few would argue against having greater access to more learning opportunities, especially when those opportunities are offered for 'free', where there is latent unmet demand, and where the opportunities themselves are well constructed and offer real value for learners. As with MOOCs at the level of higher education, however, we perhaps shouldn't be too surprised if these new opportunities at the high school level are first seized upon *not* by some of the groups with the greatest learning needs -- for example, students in overcrowded, poorly resourced secondary schools in developing countries, or even students who would like a secondary education, but for a variety of reasons aren't able to receive one -- but rather by those best placed to take advantage of them. This has been largely been the case for initial adopters of MOOCs. (One of the first studies of this aspect of the 'MOOC Phenomenon', which looked at MOOCs from the University of Pennsylvania, found that students tended to be "young, well educated, and employed, with a majority from developed countries.") As a practical matter, some of the first types of beneficiaries may, for example (and I am just speculating here), be homeschooling families in North America (while not necessarily comparatively 'rich' by local standards, such families need to be affluent enough to be able to afford to have one parent stay at home with the kids, and generally have pretty good Internet connectivity); international schools around the world (which can offer a broader range of courses to students interested in an 'American' education); and the families of 'foreign' students looking to apply to college in the United States (the edX course “COL101x: The Road to Selective College Admissions” looks, at least to my eyes, tailor made for certain segments of the population of learners in places like China, Korea, Hong Kong, etc.). In other words, at least in the near term, a Matthew Effect in Educational Technology may be apparent, where those who are best placed to benefit from the introduction of a new technology tool or innovation are the ones who indeed benefit from it the most. Longer term, though, it is possible to view this news about movement of a major MOOC platform into the area of secondary education as one further indication that we are getting further along from the 'front end of the e-learning wave' (of which MOOCs are but one part) to something that will eventually have a greater mass impact beyond what is happening now in the 'rich' countries of North America and the OECD. Learning with new technologies has of course been around for many decades but, broadly speaking, has not (yet) had the 'transformational' impact that has long been promised. "Gradually, then suddenly" is how one of Ernest Hemingway's characters famously describes how he went bankrupt. Might this be how the large scale adoption of educational technologies will eventually happen as well in much of the world? I black swan f so, one credible potential tipping point may be a 'black swan' event that could push all of this stuff into the mainstream, especially in places where it to date has been largely peripheral: some sort of major health-related scare. (For those unfamiliar with the term, which was popularized by Nicholas Taleb, a 'black swan' is a rare event that people don't anticipate but which has profound consequences). One of the first ever posts on the EduTech blog, Education & Technology in an Age of Pandemics, looked at some of what had been learned about how teachers and learners use new technologies to adapt when schools were closed in response to outbreaks involving the H1N1 influenza virus: the 'swine flu' that afflicted many in Mexico about six years ago; and an earlier outbreak of 'bird flu' in China. I have recently been fielding many calls as a result of the current outbreak of the Ebola virus in West Africa asking essentially, 'Can we do anything with technology to help our students while our schools are closed?', and so I thought it might be useful to revisit, and update, that earlier post, in case doing so might be a useful contribution to a number of related discussions are occurring. ---”
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