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dpurdy

Hydrogen vehicle - Wikipedia, the free encyclopedia - 13 views

en.wikipedia.org/...Hydrogen_vehicle

hydrogen what form infrastructure current

shared by dpurdy on 19 Mar 12 - Cached
    • dpurdy
      dpurdy on 19 Mar 12
       
      Is hydrogen sustainable? depends on the source. see this highlight.
  • While methods of hydrogen production that do not use fossil fuel would be more sustainable
  • The challenges facing the use of hydrogen in vehicles include production, storage, transport and distribution.
  • ...3 more annotations...
  • The hydrogen infrastructure consists mainly of industrial hydrogen pipeline transport and hydrogen-equipped filling stations like those found on a hydrogen highway. Hydrogen stations which are not situated near a hydrogen pipeline can obtain supply via hydrogen tanks, compressed hydrogen tube trailers, liquid hydrogen tank trucks or dedicated onsite production.
  • Hydrogen use would require the alteration of industry and transport on a scale never seen before in history. For example, according to GM, 70% of the U.S. population lives near a hydrogen-generating facility but has little access to hydrogen, despite its wide availability for commercial use.[64] The distribution of hydrogen fuel for vehicles throughout the U.S. would require new hydrogen stations that would cost, by some estimates approximately 20 billion dollars[65] and 4.6 billion in the EU.[66] Other estimates place the cost as high as half trillion dollars in the United States alone.[67]
  • Hydrogen fuel does not occur naturally on Earth and thus is not an energy source, but is an energy carrier. Currently it is most frequently made from methane or other fossil fuels. However, it can be produced from a wide range of sources (such as wind, solar, or nuclear) that are intermittent, too diffuse or too cumbersome to directly propel vehicles. Integrated wind-to-hydrogen plants, using electrolysis of water, are exploring technologies to deliver costs low enough, and quantities great enough, to compete with traditional energy sources.[2]
  • dpurdy on 19 Mar 12
     
    Fuel cell cars are expensive.  The fuel cell costs a lot
Steve Ransom

Would Gandhi Use Social Media?, by Nipun Mehta - 26 views

www.dailygood.org/view.php

socialmedia arabspring statistics Internet change reform mindfulness

shared by Steve Ransom on 10 Jul 12 - No Cached
  • but with a conscious mindfulness of their strengths and weaknesses.
  • More than half of the world’s population is now on a social networks, and it's increasing everyday
  • The Internet, then, is great for spreading awareness and it can be quite powerful in terms of its impact as well.  Where it lacks, though, is the third element -- transformation.
  • ...6 more annotations...
  • FaceBook's organizing principle is to retain the online attention of its users and monetize it by displaying ads
  • What transformation does is shift the pattern of addiction altogether; changing the habits of your heart was the true genius of these social change giants.
  • If we are to have sustainable revolutions that last for generations, our modern day technologies have to be designed for this element of inner transformation.
  • Each of those legendary service heroes started with changing themselves at the root level, and despite leading vast revolutions, always kept that front and center.
  • When organized, such inner-transformation driven designs work at the intersection of three big circles: outer change, systemic change and personal change.
  • Giftivism: the practice of radically generous acts that change the world.  It works by transforming the heart of the change maker, even more than the impact on its external beneficiaries.  A key metric of giftivism is that it works to uplift the 100%.  It has no enemies.  It is unconditionally kind to everyone.
  • Steve Ransom on 10 Jul 12
     
    Why change/impact is so hard... it must begin or move to the inner self. Passion-driven action... no tools, policies, initiatives, services,... are ever enough if we don't address the deep-seated ideas and behaviors that need to change.
Louisa Guest

Harvard Education Letter - 27 views

www.hepg.org/534

education behaviour

shared by Louisa Guest on 08 Sep 12 - No Cached
    • Louisa Guest
      Louisa Guest on 08 Sep 12
       
      get print friendly version for staff
  • Learning to see all behavior as a form of communication, for example, is a key principle that helps when teachers are frustrated or confused by how students are acting. Even though students’ behavior can look bizarre or disruptive, their actions are purposeful and are their attempts to solve a problem.
  • About 10 percent of the school population—or 9–13 million children—struggle with mental health problems. In a typical classroom of 20, chances are good that one or two students are dealing with serious psychosocial stressors relating to poverty, domestic violence, abuse and neglect, or a psychiatric disorder. There is also growing evidence that the number of children suffering the effects of trauma and those with autism-related social deficits is also on the rise.
  • ...4 more annotations...
  • If teachers are supported to set up classrooms to promote success, these students (and other challenging students who have similar behaviors but may not have individualized education plans, or IEPs) can improve their performance in school and in life.
  • Making positive attention more predictable in the classroom can help break the cycle of negative attention-seeking behaviors. Putting one-on-one time on the student’s personal visual schedule (even if it’s only a couple minutes to read a student’s favorite page in a book) or setting a timer for 10 minutes and telling the student that’s when you will be back are just two strategies that can help.
  • Teachers who work with challenging students need support from administrators and others in the school. It is very stressful to have a student in class who is constantly disruptive. In order to make the necessary investment, the teacher needs substantive support from administrators to avoid frustration and burnout and to garner the energy to provide effective interventions. When administrators delegate some of the teacher’s responsibilities to other people in the building, the teacher can devote more time to finding solutions. Regularly meeting with consultants (e.g., special educators, mental health professionals, and behavior analysts) can be essential for designing how the student progresses, but it also takes up the teacher’s prep time. If possible, the administrator can arrange coverage so that the teacher can meet with consultants at times other than lunch and prep. Support staff can instruct small groups of children while the teacher works with the student with behavior challenges. And since there are usually so many people involved with a struggling student, delineating a clear coordination plan is also critical. It can be helpful, as a team, to make a list of responsibilities and indicate who is responsible for what.
  • The more intensely the student is taught the underdeveloped skills, and the more the environment is changed to encourage appropriate behavior, the more quickly the student’s behavior is likely to change.
Roland Gesthuizen

Education Outrage: Back to School: A message to high school students who hate high scho... - 21 views

educationoutrage.blogspot.com.au/...ol-message-to-high-school.html

education school highschool engagement motivation blog

shared by Roland Gesthuizen on 09 Sep 12 - No Cached
  • I say in this interview that the only way we can learn is by doing and to do that we must practice constantly. Schools rarely teach doing, mostly teaching abstract theories that will never matter to 99% of the population.
  • So, my advice. Know what matters to you. Learn that. Temporarily memorize nonsense if you want to graduate but have a proper perspective on it. Nothing you learn in high school will matter in your future life.
  • Roland Gesthuizen on 09 Sep 12
     
    "I believe that every single subject taught in high school is a mistake. What I write here will infuriate teachers, but teachers are not my enemy. It isn't their fault. They are cogs in a system over which they have no control. I believe there are many great teachers, and I believe that teaching and teachers are very important."
Philip Pulley

MentorMob: What's On Your Learning Playlist? | MentorMob Blog - 53 views

www.mentormob.com/...hats-on-your-learning-playlist

learning playlist education resources technology

shared by Philip Pulley on 09 Jun 12 - No Cached
    • Philip Pulley
      Philip Pulley on 09 Jun 12
       
      Great new collaboration tool for students and much more 21st Century
  • A few months ago, I discovered MentorMob (MM), which allows any user to create “Learning Playlists” to share or open up to other fellow learners who might want to add or edit the content in the playlist. The end product is the ultimate learning tool for students, especially when the playlist is populated with high-quality content, including visual, audio and interactive elements
  • Philip Pulley on 09 Jun 12
     
    Explains playlists on MentorMob blog, how to create and use them.
Glen Muir

BBC News - How Chinese babies and Mid-East pizza tip US markets - 17 views

www.bbc.com/...world-us-canada-29133022

supply and demand

shared by Glen Muir on 15 Sep 14 - No Cached
  • his year in the US, milk futures leapt 26% and butter prices 62%
  • As a result, there was usually an oversupply of milk products on the market, Levitt says.
  • US and European governments stored excess dairy products
  • ...13 more annotations...
  • nd dairy regulation decreased, driving a new incentive and ability to trade with other nations.
  • s a result, the dairy market tends now toward undersupply.
  • But from December 2013 to February 2014, Chinese demand grew to 20-25% of all global dairy imports, with much of the supply coming from the US and New Zealand.
  • New Zealand is the world's largest dairy exporter, accounting for nearly one-third of the global dairy trade.
  • Many of the nation's cows graze in fields, and a big drought in 2013 caused national milk production to plummet nearly 30%.
  • The US started exporting more dairy, capturing more international market share but pushing up domestic prices.
  • It's not all bad news for New Zealand, though. Traditionally, when the price of dairy goes up, farmers expand operations and produce more milk, thus lowering prices down the line.
  • The increase in supply could eventually lead to cheaper prices in the US, but not for several months.
  • US franchises including KFC, Ihop, Subway, The Cheesecake Factory, Jamba Juice and Papa John's Pizza have all staked claims in the Middle East, with more chains looking to follow.
  • A young, newly urbanised population in the Middle East is demanding more dairy imports.
  • That removed an estimated $6.6bn (£4bn) in annual dairy trade from the global market. In 2013, the EU alone exported $3bn of dairy to Russia, of which cheese accounted for more than one-third.
  • In response, the European Commission has announced it will provide financial support to the dairy industry, subsidising private storage of cheese, skimmed milk powder and butter until they can be sold at a later date.
  • But it will take a little while to see those changes reflected in American supermarkets.
  • Glen Muir on 15 Sep 14
     
    5 factors that affect global market price
Javier E

Primero Hay Que Aprender Español. Ranhou Zai Xue Zhongwen. - NYTimes.com - 15 views

www.nytimes.com/...30kristof.html

spanish chinese language education

shared by Javier E on 30 Dec 10 - No Cached
  • Hispanics made up 16 percent of America’s population in 2009, but that is forecast to surge to 29 percent by 2050
  • Spanish is easy enough that kids really can emerge from high school with a very useful command of the language that they will retain for life, while Mandarin takes about four times as long to make the same progress.
  • In effect, Chinese is typically a career. Spanish is a practical add-on to your daily life, meshing with whatever career you choose.
danthomander

Teacher staffing and pay differences: public and private schools : Monthly Labor Review... - 27 views

www.bls.gov/...affing-and-pay-differences.htm

shared by danthomander on 20 May 15 - Cached
  • A study using Current Population Survey data shows that, from 1996 to 2012, elementary, middle, and high school teachers earned less than other college graduates, but the gap was smaller for public school teachers and smaller still if they had union representation; moreover, the mitigating effects are stronger for female than male teachers, so the within-gender pay gaps are much larger for male teachers.
Kenuvis Romero

Insula (building) - Wikipedia, the free encyclopedia - 0 views

en.wikipedia.org/...Insula_(building)

shared by Kenuvis Romero on 23 Jun 13 - No Cached
  • In Roman architecture, an insula (Latin for "island," plural insulae) was a kind of apartment building that housed most of the urban citizen population of ancient Rome, including ordinary people of lower- or middle-class status (the plebs) and all but the wealthiest from the upper-middle class (the equites). The traditional elite and the very wealthy lived in domus, large single-family residences, but the two kinds of housing were intermingled in the city and not segregated into separate neighborhoods.[1] The ground-level floor of the insula was used for tabernae, shops and businesses, with the living space upstairs. Like modern apartment buildings, an insula might have a name, usually referring to the owner of the building.[2]
Kenuvis Romero

Journal of Cerebral Blood Flow & Metabolism - Multiple Microvascular and Astroglial 5-H... - 0 views

www.nature.com/...9590586a.html

shared by Kenuvis Romero on 23 Jun 13 - No Cached
  • Physiologic and anatomic evidence suggest that 5-hydroxytryptamine (5-HT) neurons regulate local cerebral blood flow and blood-brain barrier permeability.
  • capillary endothelial cells exhibited mRNA for the h5-HT1D and for the 5-HT7 receptors whereas microvascular smooth muscle cells, in addition to h5-HT1D and 5-HT7, also showed polymerase chain reaction products for h5-HT1B receptors. Expression of 5-HT1F and 5-HT2A receptor mRNAs was never detected in any of the microvascular cell cultures. In contrast, messages for all 5-HT receptors tested were detected in human brain astrocytes with a predominance of the 5-HT2A and 5-HT7 subtypes. In all cultures, sumatriptan inhibited (35–58%, P < .05) the forskolin-stimulated production of cyclic AMP, an effect blocked by the 5-HT1B/1D receptor antagonists GR127935 and GR55562. In contrast, 5-carboxamidotryptamine induced strong increases (≥ 400%, P < .005) in basal cyclic AMP levels that were abolished by mesulergine, a nonselective 5-HT7 receptor antagonist. Only astroglial cells showed a ketanserin-sensitive increase (177%, P < .05) in IP3 formation when exposed to 5-HT. These results show that specific populations of functional 5-HT receptors are differentially distributed within the various cellular compartments of the human cortical microvascular bed, and that human brain astroglial cells are endowed with multiple 5-HT receptors. These findings emphasize the complex interactions between brain serotonergic pathways and non-neuronal cells within the CNS and, further, they raise the possibility that some of these receptors may be activated by antimigraine compounds such as brain penetrant triptan derivatives.
anonymous

The beauty of unfinished work - The Learner's Way - 34 views

thelearnersway.net/...the-beauty-of-unfinished-work

shared by anonymous on 25 Jul 15 - No Cached
    • anonymous
      anonymous on 28 Jul 15
       
      I love this concept!  The focus is on the process of learning.  Doesn't that also help to identify the way we learn as well as the progress of the learning?
    • anonymous
      anonymous on 28 Jul 15
       
      The down side of this is that there also has to be some sort of focus on the importance of completing what is started.  Everything might not have to have an end product but some things certainly should have!
  • At times it has been deeply admonished and hidden from view. Individuals who failed were to be shunned or punished. At other times failure was to be avoided by setting the bar for success so low that failure was impossible. The result of this movement was that success became meaningless, achievable by all without risk and through little effort.
  • ...8 more annotations...
    • anonymous
      anonymous on 28 Jul 15
       
      The generation when who were deeply admonished and hidden is older and most are relieved that this is no longer the case.  The generation who were shunned or punished seem to still be a part of the mainstream but most have embraced that this is no longer the case.  The generation who were part of the low expectations with failure impossible seem to be the predominance of the population now and we are seeing that there is no concept of consequences, no motivation toward high achievement, and an attitude of entitlement.
    • anonymous
      anonymous on 28 Jul 15
       
      This seems like we are evolving but moving more in a cyclical fashion and thinking more like the early innovators in our country - Jefferson, Franklin, Ford, Bell - We see a need for something and strive to create it - marking our failures as a way of knowing, "well that won't work so lets find something that will."
  • A culture that accepts failure as a part of the learning process will need to take time to celebrate the steps taken towards learning as much as it celebrates the finished product.
  • A digital work of art, of music of writing is never truly finished, it grows and transforms over time. 
    • anonymous
      anonymous on 28 Jul 15
       
      Transformation from the mindset of this is done, this if finished, this is the final draft to here is where we are at this point but it may be revisited, revised, refined at a later time.
  • mistakes are a sign that the learning is not pitched at a level below the needs of the students; if the students are not making mistakes when they engage with new learning the expectation has been set too low.
  • What must be avoided is a belief that mistakes are to be accepted without an equal emphasis on identifying and understanding their causes.
    • anonymous
      anonymous on 28 Jul 15
       
      Identify and understand the causes of mistakes so that another attempt can be made at correcting them and progress is made!
  • Nigel Coutts on 25 Jul 15
     
    There is a danger in seeking finished perfection in all that we do. There is a risk that our students will focus solely on the attributes that define a finished piece and overlook the importance of the process that leads to it.
jodi tompkins

EduDemic » 41 New Ways Google Docs Makes Your Life Easier - 109 views

edudemic.com/...le-docs-makes-your-life-easier

googledocs education tools web2.0

shared by jodi tompkins on 01 Jul 10 - No Cached
  • New version of Google documents
  • The new version has chat, character-by-character real time co-editing, and makes imports and exports much better
  • Over the next couple of weeks, they’re rolling out the ability to upload, store, and share any file in Google Docs
  • ...5 more annotations...
  • Shared folders
  • Bulk upload
  • Forms: Add pages and allow navigation to a specific page within a form
  • Forms improvements
  • They’ve added a new question type (grid), support for right-to-left languages in forms, and a new color scheme for the forms summary. Also, you can now pre-populate form fields with URL parameters, and if you use Google Apps, you can create forms which require sign-in to access
  • jodi tompkins on 07 Jul 10
     
    Google Docs newest features
Dr. Combs

Research | Teachers Network: Effective Teachers - 63 views

effectiveteachers.org/research

teaching

shared by Dr. Combs on 08 Aug 10 - Cached
  • Teachers whose students make the greatest achievement gains have extensive preparation and experience relevant to their current assignment (subject, grade level, and student population taught). Opportunities to work with like-minded, similarly accomplished colleagues – and to build and share collective expertise – are also strongly associated with effective teaching. Accomplished teachers who have opportunities to share their expertise — and serve as leaders (as coaches, mentors, teacher educator, etc.) — are more likely to remain in the profession. To teach effectively, teachers must have access to the people, resources, and policies that support their work in the classroom. This includes: (1) principals who cultivate and embrace teacher leadership; (2) time and tools for teachers to learn from each other, (3) opportunities for teachers to connect and work with community organizations and agencies that support students and their families outside the school walls; (4) evaluation systems that comprehensively measure the impact of teachers on student learning, (5) performance pay systems that primarily reward the spread of teaching expertise and spur collaboration among teachers.
  • A Better System for Schools: Developing, Supporting and Retaining Effective  Teachers
Frances Brisentine

Ghotit Free Online Service, Text-To-Speech Feature for Microsoft Explorer 7 - 43 views

www.ghotit.com/text_to_speech.shtml

shared by Frances Brisentine on 30 Sep 10 - Cached
  • Ginny Mason on 12 Nov 10
     
    I tried this at our school on a student system. I had hoped that it might make typing more efficient for really young users in addition to helping our special needs. It made Word load too slowly for the general population, and our special needs students receiving their own computers with co-writer or other word prediction software supported through our LEA. It had a nice interface (big icons, text is big, etc.), but it won't server our needs at this time.
Jac Londe

PopulationData.net : Canada - 23 views

www.populationdata.net/index2.php

shared by Jac Londe on 10 Dec 10 - No Cached
    • Jac Londe
      Jac Londe on 10 Dec 10
       
      Progression des populations selon la série de Fibonacci
Ed Webb

Pew Internet & American Life Project - 0 views

www.pewinternet.org/...enerations-Online-in-2009.aspx

pew internet age

shared by Ed Webb on 24 Mar 09 - Cached
  • Over half of the adult internet population is between 18 and 44 years old. But larger percentages of older generations are online now than in the past, and they are doing more activities online, according to surveys taken from 2006-2008. Contrary to the image of Generation Y as the "Net Generation," internet users in their 20s do not dominate every aspect of online life. Generation X is the most likely group to bank, shop, and look for health information online. Boomers are just as likely as Generation Y to make travel reservations online. And even Silent Generation internet users are competitive when it comes to email (although teens might point out that this is proof that email is for old people).
Michelle Ohanian

Study Finds That Online Education Beats the Classroom - Bits Blog - NYTimes.com - 0 views

bits.blogs.nytimes.com/...-education-beats-the-classroom

shared by Michelle Ohanian on 20 Aug 09 - Cached
  • The report examined the comparative research on online versus traditional classroom teaching from 1996 to 2008. Some of it was in K-12 settings, but most of the comparative studies were done in colleges and adult continuing-education programs of various kinds, from medical training to the military.
    • tom campbell
      tom campbell on 20 Aug 09
       
      This is an important paragraph - most of this research is beyond K-12. It doesn't diminish the promise that 2.0 and future techs can assist in creating individualized learning opps - and it soundly heralds the death of "learning by lecture" - an approach that has both failed and bored generations of students!
  • More and more, students will help and teach each other, he said.
    • Cindy Dean
      Cindy Dean on 20 Aug 09
       
      This only makes sense. Research continues to support collaborative learning and student-centered classrooms.
    • Michelle Ohanian
      Michelle Ohanian on 16 Sep 09
       
      I agree that it needs to be more personal and not about checking off a task as complete. In 2 online courses I took this summer, the discussion board comments were mostly insipid. I wish the teacher had thought about how to facillitate the online discussion to push our thinking. Perhaps to redirect false comments into real analysis and reflection of the questions posted.
  • ...1 more annotation...
    • Michelle Ohanian
      Michelle Ohanian on 16 Sep 09
       
      This leaves out many special populations of students. My English Language Learners need exposure and modeling in how to negoticate online course. My school district discourage them from taking the summer courses. I can't think of an example in which my student knew more than I did about web2.o.
  • Jane St. Pierre on 21 Aug 09
     
    Peer teaching is a powerful learning tool. Technology can help enlarge the number of peers.
Todd Finley

Hacking Education | Union Square Ventures: A New York Venture Capital Fund Focused on E... - 0 views

www.unionsquareventures.com/...hacking_education.html

shared by Todd Finley on 11 Aug 09 - Cached
  • dana boyd reminded us that "technology does not determine practice" Just shoving broadband into a group of kids, just giving them an iPhone, we can think of a gazillion designs that are valuable ... but, if you don't have a culture embedded in it, [it] becomes just another toy you can text your friends with... I've become so infinitely frustrated with... "let's just dump a bunch of laptops into a population and see what they do with it"... That doesn't work... We've watched students rip out the batteries and use them for everything else under the sun.... I don't think we can just think about the technology.... We have to think about it in a broader system.
    • Todd Finley
      Todd Finley on 11 Aug 09
       
      dana boyd reminds us about technologies limitations.
Joshua Williams

What We Learn From School Tests - Room for Debate Blog - NYTimes.com - 1 views

roomfordebate.blogs.nytimes.com/...hat-we-learn-from-school-tests

achievement gap reform testing learning

shared by Joshua Williams on 29 Apr 09 - Cached
  • The relentless gaze on high-stakes tests and the culture spawned by No Child Left Behind is blinding us to the educational demands of the 21st century.
  • But first we need a national conversation on what the 21st century will require of our ever more diverse student population. There’s no doubt that an education that promotes life-long cognitive, behavioral and relational engagement with a complex and interconnected world is key. This means we’ll need intellectually curious and cognitively flexible workers comfortable with ambiguity, able to synthesize knowledge within and across disciplines and work collaboratively in diverse groups.
  • Moving forward, we need to go beyond the mastery of facts and rules. Instead, we should nurture interpersonal sensibilities in children and teenagers so that they learn to work in groups, within and across disciplines and cultures. In short, we need to educate, not test.
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