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Francois Bergeron

Piezo | Piezoelectric | Piezoceramics | Piezoelectric ceramics | Piezo components | Pie... - 0 views

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    suggested by Antonio
Francois Bergeron

National Polymer Home - 0 views

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    suggested by Dan
Francois Bergeron

LightMachinery - Laser and Optics Library - 0 views

  • LightMachinery Laser and Optics Library
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    The internet is full of information but finding good solid information can be very difficult. We have collected information from our own staff of experts and also bookmarked information on the web that is reliable and we can use on a daily basis. Please let us know if you have any suggestions and enjoy our library.
Tiberius Brastaviceanu

Fostering creativity. A model for developing a culture of collective creativity in science - 0 views

  • Scientific progress depends on both conceptual and technological advances, which in turn depend on the creativity of scientists
  • creative processes behind these discoveries rely on mechanisms that are similar across disciplines as diverse as art and science
  • research into the nature of creativity indicates that it depends strongly on the cultural environment
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  • create optimal conditions in a research organization with the aim of enhancing the creativity of its scientific staff
  • Creativity has been traditionally associated with art and literature but since the early twentieth century, science has also been regarded as a creative activity
  • Measuring creativity is a challenging task owing to its complex and elusive nature
  • Measurement of brain activity showed that creativity correlates with two brain states: a quiescent, relaxed state corresponding to the inspiration stage, and a much more active state corresponding to the elaboration stage
  • models of creativity
  • have a common feature: they depend on a balance between analytical and synthetic thinking, and usually describe the creative process as a sequence of phases that alternate between these states
  • Most research on creativity has focused on the individual
  • However, more recent studies suggest that creativity also depends strongly on the social and cultural context
  • breakthroughs depended on collaboration and social support
  • social environment in business organizations affects the creativity of their employees
  • Although creative individuals are essential, the strong link with the environment indicates that creativity might be greatly enhanced by generating a culture that supports the creative process.
  • Many of the interviewees repeatedly emphasized three main qualities necessary to be a good scientist: rigorous intellect, the ability to get the job done and the ability to have creative ideas.
  • almost all interviewees characterized their breakthrough moment as an abrupt leap in understanding
  • Although breakthroughs in science depend on such an ‘internal' conceptual shift, they also rely on ‘external' experimental results. However, most interviewees described their breakthroughs as largely internal:
  • Only two scientists expressed the view that their breakthroughs were purely external events, based on the observation of novel data.
  • intuition
  • must be combined with rational thinking to be effective
  • Although the synthesis of a new concept relies on intuition, which is based on subconscious mental processing, it must be subjected to conscious examination and analysis
  • specific mental skills or attitudes
  • ability to make unexpected connections
  • ability to choose relevant possibilities from an infinite set of irrelevant ones
  • interest in the unknown'
  • enjoyment of the creative process
  • stimulation by interacting with colleagues
  • undoubtedly the most crucial trait for creativity, which thrives on the exchange of ideas
  • The majority felt that the individual and the collective are equally important:
  • what interactions are optimal for creativity
  • The majority of interviewees answered that other people provided them with ‘inspiration to do something new'
  • positive feedback after the emergence of a new idea is almost as important as the inspiration that triggered it
  • collective provides the individual with technical expertise
  • Therefore, scientists would value a culture of interaction and mutual inspiration more highly than access to technology, although the latter is essential for their experiments.
  • At the end of the interviews, each scientist was asked to describe the best possible conditions for generating creativity at a research institute.
  • Cross-fertilization is absolutely essential
  • These results indicate strongly that an interactive environment is the single most important factor for stimulating creativity
  • interacting with people doing very different things
  • interacting with colleagues informally
  • interactions within any institution are strongly affected by its organization
  • Several interviewees described ‘an open hierarchy' as an important factor for creativity
  • hierarchy is based on genuine respect because people are great scientists, but at the same time they're very approachable and open towards what you have to say
  • These results suggest that the best conditions for scientific creativity come with a free-flowing hierarchy and a highly developed culture of interaction to guarantee the exchange of ideas and inspiration.
  • Furthermore, interdisciplinary interactions lead to the generation of new and unusual ideas
  • Finally, because of the freedom to try new things, these ideas can be tested and eventually generate new insights.
  • Creativity can be described as an emergent phenomenon
  • nonlinear phenomena
  • Emergence depends on dynamic interactions between individual agents within the system
  • The importance of a ‘freedom to try new things' and a ‘free-flowing hierarchy' further supports the idea that individual components in an emergent system must be able to interact flexibly without central control
  • During the interviews, it became apparent that although a culture of interaction and creativity exists at EMBL, this itself is not often the subject of discussion. The values on which this culture is based are seemingly implicit rather than explicit
  • Potentially, the EMBL culture of interaction could be strengthened further by consciously expressing and discussing the values on which it is based
Tiberius Brastaviceanu

BeagleBone Black ID: 1278 - $45.00 : Adafruit Industries, Unique & fun DIY electronics ... - 2 views

    • Tiberius Brastaviceanu
       
      Ronan bla bla bla
  • If you liked the BeagleBone, you will love the next gen BeagleBone Black! With a blistering 1GHz processor, 512MB onboard DDR3 RAM, built in 2GB storage with pre-installed Linux operating system (no microSD card required!), and best of all, the addition of a MicroHDMI connector for audio/video output. This is a ultra-powered embedded computer that can fit in a mint tin. Note: As of June 4, 2013, 1pm ET Adafruit is shipping Rev A5B.
  • n on supported accessories as we test them for compatibility. For now we suggest picking up a 5V 2A power supply and a micro-HDMI cable. If you want to use it 'head-less', a USB console cable is suggested as the 'Black does not have an onboard USB-to-Serial converter
Philippe Comtois

Effects of chronic electrical stimulation on... [Differentiation. 1994] - PubMed - NCBI - 0 views

  • Our results suggest that enhanced contractile activity promotes the expression of the slow phenotype predetermined in satellite cells of slow-twitch, type I fibers.
  • stimulation enhanced the mRNA and protein expression of a developmental isoform of slow myosin (MHCI).
Tiberius Brastaviceanu

GitHub Has Big Dreams for Open-Source Software, and More - NYTimes.com - 0 views

  • GitHub has no managers among its 140 employees, for example. “Everyone has management interests,” he said. “People can work on things that are interesting to them. Companies should exist to optimize happiness, not money. Profits follow.” He does, however, retain his own title and decides things like salaries.
  • Another member of GitHub has posted a talk that stresses how companies flourish when people want to work on certain things, not because they are told to.
  • Asana bases work on a series of to-do lists that people assign one another. Inside Asana there are no formal titles, though like GitHub there are bosses at the top who make final decisions.
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  • Mr. Preston-Werner thinks the way open source requires a high degree of trust and collaboration among relative equals (plus a few high-level managers who define the scope of a job and make final decisions) can be extended more broadly, even into government.
  • GitHub’s popularity has also made it an important way for companies to recruit engineers, because some of the best people in the business are showing their work or dissecting the work of others inside some of the public pull requests.
  • For all the happiness and sharing, real money is involved here. In July GitHub received $100 million from the venture capital firm Andreessen Horowitz. This early in most software companies’ lives, $20 million would be a fortune.
  • “For now this is about code, but we can make the burden of decision-making into an opportunity,” he said. “It would be useful if you could capture the process of decision-making, and see who suggested the decisions that created a law or a bill.”
  • Can this really be extended across a large, complex organization, however?
  • As complex as an open-source project may be, it is also based on a single, well-defined outcome, and an engineering task that is generally free of concepts like fairness and justice, about which people can debate endlessly.
  • Google once prided itself on few managers and fast action, but has found that getting big can also involve lots more meetings.
  • Still, these fast-rising successes may be on to something more than simply universalizing the means of their own good fortune. An early guru of the Information Age, Peter Drucker, wrote often in the latter part of his career of the need for managers to define tasks, and for workers to seek fulfillment before profits.
Francois Bergeron

Robot's Gentle Touch Aids Delicate Cancer Surgery - 0 views

  • Surgeons have developed new minimally invasive surgery (MIS) techniques and instruments so that procedures that would previously have required a large incision can now be performed through a tiny 10mm cut.
  • University of Western Ontario and Canadian Surgical Technologies and Advanced Robotics (CSTAR) in London, Ontario
  • The researchers used a torque sensor to measure the force of the palpations.
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  • Using tactile MIS sensing instruments under robotic control reduces the maximum force applied to the tissue by over 35% compared to a human controlling the same instrument. Accuracy in detecting the tumours was also far greater with the robot - between 59 and 90% depending on the robot control method used for palpation.
  • If developed further, the authors suggest that this type of instrument would particularly benefit surgeons performing lung tumour resection, where tissue often shifts significantly.
Francois Bergeron

Aerotech  Motion Positioning Stages and Systems - 1 views

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    suggestion from Mathieu Riendeau - Optech Montreal
Francois Bergeron

Nanotubes make 'exceptional' strain sensor - 0 views

  • Affixed to the chest as a respiration monitor, the team suggest it might help prevent sudden infant death syndrome (SIDS) but Hata's favourite application is the "data glove", which senses the movement of each finger. The group's glove sensed the motions of typing, but they say a version could be used to guide robots which perform surgery.  Hata also has more fun applications in mind, such as game controllers and virtual reality systems.
Tiberius Brastaviceanu

What is an ontology and why we need it - 1 views

  • an ontology designer makes these decisions based on the structural properties of a class.
  • an ontology is a formal explicit description of concepts in a domain of discourse (classes (sometimes called concepts)), properties of each concept describing various features and attributes of the concept (slots (sometimes called roles or properties)), and restrictions on slots (facets (sometimes called role restrictions)). An ontology together with a set of individual instances of classes constitutes a knowledge base. In reality, there is a fine line where the ontology ends and the knowledge base begins.
  • Classes describe concepts in the domain
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  • A class can have subclasses that represent concepts that are more specific than the superclass.
  • Here we discuss general issues to consider and offer one possible process for developing an ontology. We describe an iterative approach to ontology development: we start with a rough first pass at the ontology. We then revise and refine the evolving ontology and fill in the details. Along the way, we discuss the modeling decisions that a designer needs to make, as well as the pros, cons, and implications of different solutions.
  • In practical terms, developing an ontology includes: �         defining classes in the ontology, �         arranging the classes in a taxonomic (subclass–superclass) hierarchy, �         defining slots and describing allowed values for these slots, �         filling in the values for slots for instances.
  • We can then create a knowledge base by defining individual instances of these classes filling in specific slot value information and additional slot restrictions.
  • Slots describe properties of classes and instances:
  • some fundamental rules in ontology design
  • There is no one correct way to model a domain— there are always viable alternatives. The best solution almost always depends on the application that you have in mind and the extensions that you anticipate. 2)      Ontology development is necessarily an iterative process. 3)      Concepts in the ontology should be close to objects (physical or logical) and relationships in your domain of interest. These are most likely to be nouns (objects) or verbs (relationships) in sentences that describe your domain.
  • how detailed or general the ontology is going to be
  • what we are going to use the ontology for
  • concepts in the ontology must reflect this reality
  • We suggest starting the development of an ontology by defining its domain and scope. That is, answer several basic questions: �         What is the domain that the ontology will cover? �         For what  we are going to use the ontology? �         For what types of questions the information in the ontology should provide answers? �         Who will use and maintain the ontology?
  • plan to use
  • domain
  • If the people who will maintain the ontology describe the domain in a language that is different from the language of the ontology users, we may need to provide the mapping between the languages.
  • One of the ways to determine the scope of the ontology is to sketch a list of questions that a knowledge base based on the ontology should be able to answer, competency questions
  • These competency questions are just a sketch and do not need to be exhaustive.
Tiberius Brastaviceanu

Home - American Swiss - 1 views

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    never ordered from them, this was suggested by Jonathan
Kurt Laitner

Inequality: Why egalitarian societies died out - opinion - 30 July 2012 - New Scientist - 0 views

  • FOR 5000 years, humans have grown accustomed to living in societies dominated by the privileged few. But it wasn't always this way. For tens of thousands of years, egalitarian hunter-gatherer societies were widespread. And as a large body of anthropological research shows, long before we organised ourselves into hierarchies of wealth, social status and power, these groups rigorously enforced norms that prevented any individual or group from acquiring more status, authority or resources than others.*
  • How, then, did we arrive in the age of institutionalised inequality? That has been debated for centuries. Philosopher Jean-Jacques Rousseau reasoned in 1754 that inequality was rooted in the introduction of private property. In the mid-19th century, Karl Marx and Friedrich Engels focused on capitalism and its relation to class struggle. By the late 19th century, social Darwinists claimed that a society split along class lines reflected the natural order of things - as British philosopher Herbert Spencer put it, "the survival of the fittest". (Even into the 1980s there were some anthropologists who held this to be true - arguing that dictators' success was purely Darwinian, providing estimates of the large numbers of offspring sired by the rulers of various despotic societies as support.)
  • But by the mid-20th century a new theory began to dominate. Anthropologists including Julian Steward, Leslie White and Robert Carneiro offered slightly different versions of the following story: population growth meant we needed more food, so we turned to agriculture, which led to surplus and the need for managers and specialised roles, which in turn led to corresponding social classes.
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  • One line of reasoning suggests that self-aggrandising individuals who lived in lands of plenty ascended the social ranks by exploiting their surplus - first through feasts or gift-giving, and later by outright dominance
  • At the group level, argue anthropologists Peter Richerson and Robert Boyd, improved coordination and division of labour allowed more complex societies to outcompete the simpler, more equal societies
  • From a mechanistic perspective, others argued that once inequality took hold - as when uneven resource-distribution benefited one family more than others - it simply became ever more entrenched. The advent of agriculture and trade resulted in private property, inheritance, and larger trade networks, which perpetuated and compounded economic advantages.
  • Many theories about the spread of stratified society begin with the idea that inequality is somehow a beneficial cultural trait that imparts efficiencies, motivates innovation and increases the likelihood of survival. But what if the opposite were true?
  • In a demographic simulation that Omkar Deshpande, Marcus Feldman and I conducted at Stanford University, California, we found that, rather than imparting advantages to the group, unequal access to resources is inherently destabilising and greatly raises the chance of group extinction in stable environments.
  • Counterintuitively, the fact that inequality was so destabilising caused these societies to spread by creating an incentive to migrate in search of further resources. The rules in our simulation did not allow for migration to already-occupied locations, but it was clear that this would have happened in the real world, leading to conquests of the more stable egalitarian societies - exactly what we see as we look back in history.
  • In other words, inequality did not spread from group to group because it is an inherently better system for survival, but because it creates demographic instability, which drives migration and conflict and leads to the cultural - or physical - extinction of egalitarian societies.
  • Egalitarian societies may have fostered selection on a group level for cooperation, altruism and low fertility (which leads to a more stable population), while inequality might exacerbate selection on an individual level for high fertility, competition, aggression, social climbing and other selfish traits.
Tiberius Brastaviceanu

supereyes.cc - 2 views

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    never ordered from them, this was suggested by Jonathan
Tiberius Brastaviceanu

Fiber optic strain gage and carrier - Google Patents - 1 views

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    patent suggested by Luis Renaud. He wants us to seriously explore this type of applications, he thinks that there is a big market for this.
Kurt Laitner

The Dead Are Wealthier Than the Living: Capital in the 21st Century - Pacific Standard:... - 0 views

  • you needed at least 20 to 30 times the income of the average person, and the most lucrative professions paid only half that
  • Consequently, “society” (i.e., the rich) consisted almost entirely of rentiers living off inherited wealth
  • In recent memory, the way to get rich has been to do it yourself
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  • But it’s income that mostly interests us, not wealth, because income is the currency of the modern economy. Gone are the days when the only way to acquire an upper-class income was to marry into a family fortune.
  • Being born into or marrying wealth never stopped being the easiest path to acquiring a fortune
  • A fanatical miser, Getty was ever-fearful that his fortune would dissipate.
  • The return on capital (r) almost always exceeds economic growth (g).
  • “a very large share, perhaps a majority, of corporate profit hinges on rules and regulations that could in principle be altered.”
  • The clearest such pattern is that r really was, at most points in history, greater than g, if only because g was seldom much to write home about, especially back when economies were primarily agricultural. (Inflation, I learned from reading this book, didn’t really exist before the 20th century.)
  • The big driver of income inequality, Piketty says, isn’t labor income. It’s capital.
  • Only when you add in capital income does the gap widen to 15 percentage points
  • really, the 0.01 percent, a cohort Piketty dubs “supermanagers”—to receive much of its remuneration in the form of stock options and other capital holdings.
  • Typically, r is four to five times g, but the ratio gets larger as capital accumulates across generations
  • Baker also suggests that the tendency for large amounts of capital to realize a higher return isn’t solely attributable to the superior financial instruments they have access to; it may also have something to do with rampant insider trading, which could be policed more closely.
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    just in case we get too caught up in determining incomes, disrupting private capital and inheritance needs to be on the agenda.  Private goods tend to eventually become public goods (paid a royalty for paper lately?) but the rate at which private goods become public needs to increase (patent reform, inheritance tax etc)
hsshamieh

Robotic Arm - 2 views

Is there anyone in the Sensorica network interested in building a Robotic arm? For one of my project, I need to have a Robotic arm (deadline is November 15; funding available). I found a great rece...

started by hsshamieh on 03 Sep 17 no follow-up yet
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