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meghankelly492

(PDF) A Systematic Review of Treatments for Music Performance Anxiety - 2 views

  • Four other studies (three of which are dissertations) assessed behavioral treatments forMPA on music students. Grishman (1989) and Mansberger (1988) used standard musclerelaxation techniques, Wardle (1969) compared insight/relaxation and systematic desensi-tisation techniques, and Deen (1999) used awareness and breathing techniques
  • A systematic review of all available treatment studies for music performance anxiety was undertaken.
  • reported that 24% of musicians frequently suffered stage fright, defined in this study as themost severe form of MPA, 13% experienced acute anxiety and 17% experienceddepression.
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  • 59% of musicians in symphony orchestras reported performance anxiety severe enough toimpair their professional and/or personal functioning.
  • A recent study indicated that MPA is not limited to orchestralmusicians, showing that opera chorus artists are also prone to high levels of performanceanxiety
  • However, since not allperformers suffer the same degree of MPA, or indeed report the same levels of occupationalstress, individual differences in a range of psychological characteristics are likely to accountfor variations in the degree to which musicians experience symptoms
  • A large number of treatment modalities (e.g., behavioral, cognitive, pharmacological andcomplementary) has been developed for music performance anxiety (MPA)
  • However, areview of this literature indicates that the field is still in its infancy with respect to theconceptual and theoretical formulations of the nature of MPA and its empiricalinvestigation.
  • Anxiety may be triggered by conscious,rational concerns or by cues that trigger, unconsciously, earlier anxiety producingexperiences or somatic sensations.
  • These findings suggest that multi-modal interventions are needed toaddress the multiple difficulties experienced by test anxious individuals.
  • with some focusing on behavioral change, some on cognitivechange, others on reduction of physiological symptoms through the use of pharmacotherapy,and some on idiosyncratic formulations
  • For drug studies, the keywords were beta-blocker [Beta blockers block the effect ofadrenaline (the hormone norepinephrine) on the body’s beta receptors. This slows downthe nerve impulses that travel through the heart. As a result, the resting heart rate is lower,the heart does not have to work as hard and requires less blood and oxygen
  • Brodsky (1996) and Nube´(1991) were most useful.
  • The interventionsassessed included systematic desensitization, progressive muscle relaxation, awareness andbreathing and behavioural rehearsal
  • In summary, behavioral treatments do appear to be at least minimally effective in thetreatment of MPA, although the heterogeneity of the treatment approaches employedmakes it difficult to isolate consistent evidence for the superiority of any one type ofbehavioral intervention
  • Two studies (see Tables II and IV) assessed the therapeutic effect of cognitive techniquesalone on MPA.
  • A dissertation by Patston (1996) reported a comparison of cognitive (e.g.positive self-talk, etc.) and physiological strategies in the treatment of MPA. No significantimprovements on vocal and visual manifestations of performance anxiety were found foreither treatment or control groups. However, the sample consisted of only 17 operastudents who were not specifically selected on the basis of their MPA severity, and theintervention was conducted by the author, a singer and teacher, who had no training inpsychology.
  • Three studies (see Table III) assessed the therapeutic effect of cognitive-behavioralstrategies on MPA. Harris (1987), Roland (1993), and Kendrick et al. (1982) all reportedthat standard CBT techniques were effective in the treatment of MPA in studentsspecifically selected for study because of the severity of their MPA.
  • Harris (1987) and Roland(1993) reported that CBT led to reductions in state anxiety as measured by the STAI,although Kendrick et al. (1982) failed to find a significant difference between treatment andcontrol groups on this measure.
  • The evidence for improvements in MPA following CBT is quite consistent, althoughfurther studies with larger samples are needed to confirm this evidence.
  • Beta-blockers have become increasingly popular among performers in recent years. Forexample, Lockwood (1989), in a survey of 2,122 orchestral musicians, found that 27% usedpropranolol to manage their anxiety prior to a performance; 19% of this group used thedrug on a daily basis.
  • Nube´ (1991) identified nine studies examining the effects of various beta-blockers(Atenolol, Metopolol, Nadolol, Oxprenolol, Propranolol, Pindolol) on MPA.
  • The findings regarding the effects of beta blockers on otheroutcome measures were less conclusive.
  • A rigorous definition of MPA is needed to advance treatment. However, defining MPA as asocial anxiety (social phobia) using criteria set out in DSM-IV-TR (APA, 2000) as theinclusion criteria may be too restrictive, particularly if the musician presenting for treatmentexperiences MPA as a focal anxiety (ie does not meet other criteria for social anxiety).
  • Few ofthe intervention studies reviewed acknowledged that performers need a certain amount ofarousal or anxiety to maximise their performance.
  • None of the studies could be pooled in a meta-analysis primarily because too fewprovided sufficient data to calculate effect sizes, use of diverse subject groups andtreatments, duration and intensity of treatment, and use of disparate outcome measures
  • In conclusion, the literature on treatment approaches for MPA is fragmented, incon-sistent, and methodologically weak. These limitations make it difficult to reach any firmconclusions about the effectiveness of the various treatment approaches reviewed. Forsignificant progress to be made, future research will require a clear definition of MPA,consistency and strength in methodology, and the development of robust and appropriateoutcome measures.
Martin Burrett

'Doing science,' rather than 'being scientists,' more encouraging to girls - 8 views

  •  
    "Asking young girls to "do science" leads them to show greater persistence in science activities than does asking them to "be scientists," finds a new psychology study by researchers at New York University and Princeton University. "Describing science as actions, by saying 'let's do science,' leads to more science engagement than does describing science in terms of identities, by asking them to 'be scientists'" explains Marjorie Rhodes, an associate professor in NYU's Department of Psychology and the senior author of the study, which appears in the journal Psychological Science. "These effects particularly hold for children who are the target of stereotypes suggesting that they might not be the kind of person who succeeds in science-in this case, girls," she adds."
Tara Heath

Hate Speech and Hate Crime | Advocacy, Legislation & Issues - 4 views

  • There is no legal definition of "hate speech" under U.S. law, just as there is no legal definition for evil ideas, rudeness, unpatriotic speech, or any other kind of speech that people might condemn. Generally, however, hate speech is any form of expression through which speakers intend to vilify, humiliate, or incite hatred against a group or a class of persons on the basis of race, religion, skin color sexual identity, gender identity, ethnicity, disability, or national origin. 1 In the United States, hate speech is protected by the First Amendment. Courts extend this protection on the grounds that the First Amendment requires the government to strictly protect robust debate on matters of public concern even when such debate devolves into distasteful, offensive, or hateful speech that causes others to feel grief, anger, or fear. (The Supreme Court's decision in Snyder v. Phelps provides an example of this legal reasoning.) Under current First Amendment jurisprudence, hate speech can only be criminalized when it directly incites imminent criminal activity or consists of specific threats of violence targeted against a person or group. Hate Crime For the purposes of collecting statistics, the FBI has defined a hate crime as a “criminal offense against a person or property motivated in whole or in part by an offender’s bias against a race, religion, disability, sexual orientation, ethnicity, gender, or gender identity,” including skin color and national origin.  Hate crimes are overt acts that can include acts of violence against persons or property, violation or deprivation of civil rights, certain "true threats," or acts of intimidation, or conspiracy to commit these crimes. The Supreme Court has upheld laws that either criminalize these acts or impose a harsher punishment when it can be proven that the defendant targeted the victim because of the victim's race, ethnicity, identity, or beliefs.  A hate crime is more than than offensive speech or conduct; it is specific criminal behavior that ranges from property crimes like vandalism and arson to acts of intimidation, assault, and murder.  Victims of hate crimes can include institutions, religious organizations and government entities as well as individuals.
  •  
    "Hate Speech There is no legal definition of "hate speech" under U.S. law, just as there is no legal definition for evil ideas, rudeness, unpatriotic speech, or any other kind of speech that people might condemn. Generally, however, hate speech is any form of expression through which speakers intend to vilify, humiliate, or incite hatred against a group or a class of persons on the basis of race, religion, skin color sexual identity, gender identity, ethnicity, disability, or national origin. 1 In the United States, hate speech is protected by the First Amendment. Courts extend this protection on the grounds that the First Amendment requires the government to strictly protect robust debate on matters of public concern even when such debate devolves into distasteful, offensive, or hateful speech that causes others to feel grief, anger, or fear. (The Supreme Court's decision in Snyder v. Phelps provides an example of this legal reasoning.) Under current First Amendment jurisprudence, hate speech can only be criminalized when it directly incites imminent criminal activity or consists of specific threats of violence targeted against a person or group. Hate Crime For the purposes of collecting statistics, the FBI has defined a hate crime as a "criminal offense against a person or property motivated in whole or in part by an offender's bias against a race, religion, disability, sexual orientation, ethnicity, gender, or gender identity," including skin color and national origin.  Hate crimes are overt acts that can include acts of violence against persons or property, violation or deprivation of civil rights, certain "true threats," or acts of intimidation, or conspiracy to commit these crimes. The Supreme Court has upheld laws that either criminalize these acts or impose a harsher punishment when it can be proven that the defendant targeted the victim because of the victim's race, ethnicity, identity, or beliefs.  A hate crime is more than than offensive speech
Sirkku Nikamaa-Linder

CBI: Our education systems are not delivering - while average performance rises gently, too many are left behind - 0 views

  • Spending on education accelerated still further after 1997, rising in real terms by 71% by 2010-11.
  • UK ranks among the highest spending OECD countries measured in terms of percentage of GDP on education.
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  • but we are being outperformed by nations which spend less.
  • the challenge lies not in what we spend, but in what we do.
  • explanation for the conveyor belt comes not from money, therefore, but from other incentives that schools face.
  • Schools have become used to governments setting blanket targets,
  • We should not be surprised that these drive behaviour – but not always the behaviour that the Department for Education wants.
  • The percentage of pupils gaining five ‘good’ A*-C GCSEs has increased by 50% over the last decade.
  • this should be an indicator of great success
  • has been questioned by many commentators.
  • When we look at whether the improvement on the GCSE metric is general or specific to those close to the grade boundary, it is clear that this measure is driving what is happening in schools.
  • intensive targeting of resources on pupils just below the C grade and/or an increase in teachers’ expertise in ‘teaching to the test’ has been behind  improvements.
  • Whatever the explanation, it doesn’t inspire confidence that the rise in exam grades for average ability candidates really reflects an increase across all groups in mastery of the subjects studied.
  • Narrowly-defined targets like these, based only on exam results subtly inhibit the overall education of young people.
    • Sirkku Nikamaa-Linder
       
      This is why Finland only has one national test....
  • If an acceptable level is reached, failure among a substantial minority is tolerated.
  • At earlier stages in the system, similar testing frameworks focus school accountability on achieving a certain percentage of pupils reaching a defined average, rather than a focus on absolute attainment.
  • it is possible to dramatically reduce attainment gaps in their primary school populations and raise standards on a broader basis than the UK has managed.
Roland Gesthuizen

What measures the best teacher? More than scores, study shows - 1450 WHTC Holland's Hometown Station - 138 views

  • researchers found they could pick out the best teachers in a school and even predict roughly how much their students would learn if they rated the educators through a formula that put equal weight on student input, test scores and detailed classroom observations by principals and peers
  • Judging teachers primarily by student performance on state tests, for instance, turned out to be highly unreliable, with little consistency from year to year. Judging them chiefly by a principal's observations failed to identify those teachers who could be counted on to boost student proficiency on state math and reading tests.
  • This should be a very big red flag to all those policy makers who think they can have test-based accountability be half or more of a teacher's evaluation
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    "(Reuters) - Effective teachers can be identified by observing them at work, measuring their students' progress on standardized tests - and asking those students directly what goes on in the classroom, according to a comprehensive study released Tuesday."
Matt Renwick

Educational Leadership:Faces of Poverty:Boosting Achievement by Pursuing Diversity - 19 views

    • Matt Renwick
       
      This is a critical point. Allowing middle class families to pick and choose where there kids should go without valid reasons (i.e. work) can hurt high poverty schools.
    • Matt Renwick
       
      Have we?
  • Residential poverty tends to be concentrated, and successful school integration requires either a district with enough socioeconomic diversity within its boundaries or a group of neighboring districts which, when combined, have enough diversity to facilitate an interdistrict integration plan.
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  • A weighted lottery is the simplest way for schools to ensure that they enroll a diverse student body while still relying on choice-based enrollment.
    • Matt Renwick
       
      A possible solution?
  • ndividual success stories and a review of research suggest that it is possible, by offering all students a single challenging curriculum, to reduce the achievement gap without harming the highest achievers (Burris, Wiley, Welner, & Murphy, 2008; Rui, 2009).
  • In the middle grades, students at City Neighbors start their day with half an hour of highly specialized, small-group instruction called intensive. Intensive provides an opportunity for extra support or enrichment in different subjects, allowing teachers to meet different students' needs while still teaching most of the academic time in mixed-ability classrooms.
    • Matt Renwick
       
      Sounds like an intervention block, something many buildings have or are looking at.
  • small but growing number of schools are attempting to boost the achievement of low-income students by shifting enrollment to place more low-income students in mixed-income schools. Socioeconomic integration is an effective way to tap into the academic benefits of having high-achieving peers, an engaged community of parents, and high-quality teachers.
  • A 2010 meta-analysis found that students of all socioeconomic statuses, races, ethnicities, and grade levels were likely to have higher mathematics performance if they attended socioeconomically and racially integrated schools (Mickelson & Bottia, 2010).
  • Research supporting socioeconomic integration goes back to the famous Coleman Report, which found that the strongest school-related predictor of student achievement was the socioeconomic composition of the student body (Coleman et al., 1966).
  • nd results of the 2011 National Assessment of Educational Progress in mathematics show steady increases in low-income 4th graders' average scores as the percentage of poor students in their school decreases (U.S. Department of Education, 2011).
  • a number of studies have found that the relationship between student outcomes and the socioeconomic composition of schools is strong even after controlling for some of these factors, using more nuanced measures of socioeconomic status, or comparing outcomes for students randomly assigned to schools (Reid, 2012; Schwartz, 2012).
  • Rumberger and Palardy (2005) found that the socioeconomic composition of the school was as strong a predictor of student outcomes as students' own socioeconomic status.
  • Socioeconomic integration is a win-win situation: Low-income students' performance rises; all students receive the cognitive benefits of a diverse learning environment (Antonio et al., 2004; Phillips, Rodosky, Muñoz, & Larsen, 2009); and middle-class students' performance seems to be unaffected up to a certain level of integration.
  • A recent meta-analysis found "growing but still inconclusive evidence" that the achievement of more advantaged students was not harmed by desegregation policies (Harris, 2008, p. 563).
  • he findings suggested that, more than a precise threshold, what mattered in these schools was maintaining a critical mass of middle-class families, which promoted a culture of high expectations, safety, and community support.
  • istricts have chosen to let school boundaries reflect or even amplify residential segregation.
Elizabeth Resnick

eGFI - For Teachers » Grades 6-8 - 5 views

  • Marshmallow Design Challenge Posted on September 28th, 2011 by mxl In this lesson, K-12 student teams have a limited period of time (18 minutes) to build the tallest free-standing spaghetti structure that can support a marshmallow. They learn how engineers collaborate to design, test, and improve on their ideas, as well as examine hidden assumptions that can derail the creative process and final product. Read More
  • Lesson: Design From Nature Posted on September 25th, 2011 by mxl In this lesson, students in grades 6-8 discover how engineers can use biomimicry to enhance their designs. They learn how careful observation of nature — in this case, reverse engineering a flower — can lead to new innovations and products. Read More
  • Lesson: Concrete for Kids Posted on September 6th, 2011 by mxl Concrete for Kids is a fun, hands-on activity to introduce students to engineering and concrete as an engineered material that engineers use to make the structures we use every day, including bridges, buildings, and roads. In this two-period lesson, teams of students in grades K-12 mix and pour concrete to form beams which, once hardened, are tested to see how much weight they can hold before breaking. Read More
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    Engineering lesson plans.  Sort by grade level.  
Roland Gesthuizen

UK Study: Parents, Not Teachers, Key to Education | Education News - 79 views

  • Children are influenced by everything around them, the way their parents act, what their parents say and do, and increasingly as they spend more time ‘with’ celebrity figures how these role models act.
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    A study by the Royal Economic Society, to be presented this week, finds that parental effect on test results is five times that of teachers' influence. This comes in the wake of warnings by Sir Michael Wilshaw last week that teachers were unable to properly do their own jobs because parents were expecting them to cover their own parenting skill shortfalls and to become surrogate family for the students.
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    It all happens well before school comes into the equation. If a child grows up in a literature rich, engaging environment with adults that spend quality time giving opportunities for great learning experiences in the world, the worst teachers still can't decoy that child's enthusiasm for learning. He can always learn at home. But if the child grows up neglected, not nurtured with rich learning experiences ( and I'm not talking about helicopter parents spending every waking moment ramming study down their throats - just quality conversation and hands on experiences )l doesn't get read to or taken out to shop, teachers are fighting an uphill battle with a disengaged individual. Parents, don't wait for school teachers to teach your kids. Start straight away..
Brianna Crowley

Adam Kirk Edgerton: Why I Quit Teaching - 53 views

  • Who orders books? A classroom teacher. Who writes the curriculum? A classroom teacher. Who handles discipline? A classroom teacher.
  • Evaluations are done by peers, and the tools are developed by teachers. Teachers are hired by other teachers. There are no outside consultants, no central office administrators, and no superintendents.
  • Let it be the person who pays the electrical bill, who makes sure everyone gets paid, who is a sounding board for teachers. Let it be someone who still has to lesson plan, grade and walk in front of a room of children every day and figure out what's best for them, one day at a time.
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  • given leadership positions while remaining in the classroom for their entire careers.
  • If we continue to treat our teachers like children, what will become of our children?
  • I quit teaching because I was tired of feeling powerless. Tired of watching would-be professionals treated as children, infantilized into silence. Tired of the machine that turns art into artifice for the sake of test scores. Tired of being belittled, disrespected and looked down upon by lawyers, politicians, and decision-makers who see teaching as the province of provincials, the work of housewives that can be done by anyone.
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    "If we continue to treat our teachers like children, what will become of our children?" Although this article is very confrontational, it does offer some solution-focused thinking. Teachers should be pushing our profession in these ways--prompting dialogue and debate among our communities and our faculties. 
Roland Gesthuizen

BBC News - School ICT to be replaced by computer science programme - 3 views

  • "Instead of children bored out of their minds being taught how to use Word or Excel by bored teachers, we could have 11-year-olds able to write simple 2D computer animations," he said.
  • "Children are being forced to learn how to use applications, rather than to make them. They are becoming slaves to the user interface and are totally bored by it,"
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    The current programme of information and communications technology (ICT) study in England's schools will be scrapped from September, the education secretary has announced. It will be replaced by an "open source" curriculum in computer science and programming designed with the help of universities and industry.
Deborah King

Clive Thompson on Why Kids Can't Search | Magazine - 204 views

  • how savvy
  • If they’re naive at Googling, it’s because the ability to judge information is almost never taught in school.
  • intelligent search a key to everyday problem-solving
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  • a golden opportunity to train kids in critical thinking.
  • “The big thing in assessing search results is authorship—who put it there and why have they put it there?”
  • “This is learning how to learn.”
  • , mastering “crap detection 101,”
  • One prerequisite is that you already know a lot about the world.
  • Google makes broad-based knowledge more important, not less
  • But, crucially, she also trains students to assess the credibility of what they find online. For example, she teaches them to analyze the tone of a web page to judge whether it was created by an academic, an advocacy group, or a hobbyist.
  • she also trains students to assess the credibility of what they find online. For example, she teaches them to analyze the tone of a web page to judge whether it was created by an academic, an advocacy group, or a hobbyist.
  • she also trains students to assess the credibility of what they find online. For example, she teaches them to analyze the tone of a web page to judge whether it was created by an academic, an advocacy group, or a hobbyist
  • she also trains students to assess the credibility of what they find online. For example, she teaches them to analyze the tone of a web page to judge whether it was created by an academic, an advocacy group, or a hobbyist.
  • kids grok the intricacies
  • A group of researchers led by College of Charleston business professor Bing
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    All subjects need to teach students how to search for, analyze and utilize digital information within the subject area. This is where students will be getting info until someone pulls the plug or locks them in a bookmobile.
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    "We're often told that young people tend to be the most tech-savvy among us. But just how savvy are they? ,,, High school and college students may be "digital natives," but they're wretched at searching."
Roland Gesthuizen

City Teacher Data Reports Are Released - SchoolBook - 36 views

  • The rankings stem from a desire by policy makers to find an objective way to distinguish between effective and ineffective teachers, untainted by the subjective judgment of individual evaluators, like school principals.
  • Critics also say there are aspects of a child’s life — or distractions on test day — that the numbers cannot capture: supportive parents, a talented principal, the help of a tutor, allergies or a relentlessly barking dog outside the classroom.
  • there are schools where students are taught by multiple teachers, making it difficult to figure out the weight of their individual contributions
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  • The union has warned that the result will be sweeping, with good teachers steering clear of grades that have standardized tests, parents’ attempts to switch their children to other classrooms, low morale among teachers and worse.
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    After a long legal battle and amid much anguish by teachers and other educators, the New York City Education Department released individual performance rankings of 18,000 public school teachers on Friday, while admonishing the news media not to use the scores to label or pillory teachers.
Tonya Thomas

elearn Best Practices & Tips Articles - 45 views

  • In the Google Age, Information Literacy is Crucial
  • Lights, Camera, Learn!: Five tips for using video in eLearning
  • Improving Motivation in eLearning By Matt Guyan / October 8, 2013
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  • Synchronous Learning: Is there a future? By Martin Sivula / September 26, 2013
  • eLearning and Digital Cultures: A multitudinous open online course By Jeremy Knox / September 24, 2013
  • The Rock Stars of eLearning: An interview with Connie Malamed By Rick Raymer / September 19, 2013
  • The Rock Stars of eLearning: An interview with Karl Kapp By Rick Raymer / September 5, 2013
Jac Londe

17 U.S. Code § 113 - Scope of exclusive rights in pictorial, graphic, and sculptural works | LII / Legal Information Institute - 10 views

  • U.S. Code › Title 17 › Chapter 1 › § 113 17 U.S. Code § 113 - Scope of exclusive rights in pictorial, graphic, and sculptural works
  • (a) Subject to the provisions of subsections (b) and (c) of this section, the exclusive right to reproduce a copyrighted pictorial, graphic, or sculptural work in copies under section 106 includes the right to reproduce the work in or on any kind of article, whether useful or otherwise.
  • (b) This title does not afford, to the owner of copyright in a work that portrays a useful article as such, any greater or lesser rights with respect to the making, distribution, or display of the useful article so portrayed than those afforded to such works under the law, whether title 17 or the common law or statutes of a State, in effect on December 31, 1977, as held applicable and construed by a court in an action brought under this title.
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  • (c) In the case of a work lawfully reproduced in useful articles that have been offered for sale or other distribution to the public, copyright does not include any right to prevent the making, distribution, or display of pictures or photographs of such articles in connection with advertisements or commentaries related to the distribution or display of such articles, or in connection with news reports.
  • (d) (1) In a case in which— (A) a work of visual art has been incorporated in or made part of a building in such a way that removing the work from the building will cause the destruction, distortion, mutilation, or other modification of the work as described in section 106A (a)(3), and
  • (B) the author consented to the installation of the work in the building either before the effective date set forth in section 610(a) of the Visual Artists Rights Act of 1990, or in a written instrument executed on or after such effective date that is signed by the owner of the building and the author and that specifies that installation of the work may subject the work to destruction, distortion, mutilation, or other modification, by reason of its removal,
  • then the rights conferred by paragraphs (2) and (3) of section 106A (a) shall not apply.
  • (2) If the owner of a building wishes to remove a work of visual art which is a part of such building and which can be removed from the building without the destruction, distortion, mutilation, or other modification of the work as described in section 106A (a)(3), the author’s rights under paragraphs (2) and (3) of section 106A (a) shall apply unless—
  • (A) the owner has made a diligent, good faith attempt without success to notify the author of the owner’s intended action affecting the work of visual art, or (B) the owner did provide such notice in writing and the person so notified failed, within 90 days after receiving such notice, either to remove the work or to pay for its removal.
  • For purposes of subparagraph (A), an owner shall be presumed to have made a diligent, good faith attempt to send notice if the owner sent such notice by registered mail to the author at the most recent address of the author that was recorded with the Register of Copyrights pursuant to paragraph (3). If the work is removed at the expense of the author, title to that copy of the work shall be deemed to be in the author.
  • (3) The Register of Copyrights shall establish a system of records whereby any author of a work of visual art that has been incorporated in or made part of a building, may record his or her identity and address with the Copyright Office. The Register shall also establish procedures under which any such author may update the information so recorded, and procedures under which owners of buildings may record with the Copyright Office evidence of their efforts to comply with this subsection.
Jennie Snyder

Atul Gawande: How Do Good Ideas Spread? : The New Yorker - 36 views

  • Why do some innovations spread so swiftly and others so slowly
  • Consider the very different trajectories of surgical anesthesia and antiseptics, both of which were discovered in the nineteenth century.
  • The first public demonstration of anesthesia was in 1846.
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  • nsisted that he had found a gas that could render patients insensible to the pain of surgery.
  • The idea spread like a contagion, travelling through letters, meetings, and periodicals. By mid-December, surgeons were administering ether to patients in Paris and London. By February, anesthesia had been used in almost all the capitals of Europe, and By June in most regions of the world.
  • On October 16, 1846, at Massachusetts General Hospital, Morton administered his gas through an inhaler in the mouth of a young man undergoing the excision of a tumor in his jaw.
  • Four weeks later, on November 18th, Bigelow published his report on the discovery of “insensibility produced by inhalation” in the Boston Medical and Surgical Journal.
  • There were forces of resistance, to be sure. Some people criticized anesthesia as a “needless luxury”; clergymen deplored its use to reduce pain during childbirth as a frustration of the Almighty’s designs.
  • Yet soon even the obstructors, “with a run, mounted behind—hurrahing and shouting with the best.” Within seven years, virtually every hospital in America and Britain had adopted the new discovery.
  • Sepsis—infection—was the other great scourge of surgery. It was the single biggest killer of surgical patients, claiming as many as half of those who underwent major operations
  • nfection was so prevalent that suppuration—the discharge of pus from a surgical wound—was thought to be a necessary part of healing.
  • In the eighteen-sixties, the Edinburgh surgeon Joseph Lister read a paper by Louis Pasteur laying out his evidence that spoiling and fermentation were the consequence of microorganisms. Lister became convinced that the same process accounted for wound sepsis.
  • Lister had read about the city of Carlisle’s success in using a small amount of carbolic acid to eliminate the odor of sewage, and reasoned that it was destroying germs. Maybe it could do the same in surgery.
  • During the next few years, he perfected ways to use carbolic acid for cleansing hands and wounds and destroying any germs that might enter the operating field.
  • The result was strikingly lower rates of sepsis and death.
  • Far from it.
  • Surgeons soaked their instruments in carbolic acid, but they continued to operate in black frock coats stiffened with the blood and viscera of previous operations—the badge of a busy practice.
  • hey reused sea sponges without sterilizing them.
  • It was a generation before Lister’s recommendations became routine and the next steps were taken toward the modern standard of asepsis—that is, entirely excluding germs from the surgical field, using heat-sterilized instruments and surgical teams clad in sterile gowns and gloves.
  • Maybe ideas that violate prior beliefs are harder to embrace. To nineteenth-century surgeons, germ theory seemed as illogica
  • The technical complexity might have been part of the difficulty. Giving Lister’s methods “a try” required painstaking attention to detail.
Kenuvis Romero

Psilocybin (magic mushrooms) - 0 views

  • The biosinthetic path that allow Psilocybin to be produced by mushrooms is as follow:
  • The several analogyes with triptophan aminoacid, with whom psilocybin has common origines are probably at the base of psilocybin ability to induced psychedelich alteration on humans.
  • Amino acids, including tryptophan, act as building blocks in protein biosynthesis. In addition, tryptophan functions as a biochemical precursor for many compounds like serotonin Serotonin (a neurotransmitter), synthesized via tryptophan hydroxylase. Serotonin, in turn, can be converted to melatonin (a neurohormone), via N-acetyltransferase and 5-hydroxyindole-O-methyltransferase activities
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  • it's been noticed that psilocyn can indirectly raise dopamine concentration withing the basal ganglia.
  • Almost 50% of oral psilocybin is absorbed by stomach and gut; from here is lead to liver, where it's converted in psilocin, pharmacologically active form, that can furtherly be glucoronated and escreted with urine or converted in other psilocinics metabolites.
  • In rats, the median lethal dose (LD50) when administered orally is 280 milligrams per kilogram (mg/kg), approximately one and a half times that of caffeine. When administered intravenously in rabbits, psilocybin's LD50 is approximately 12.5 mg/kg
  • traces of the compund can be detected in unine even after 7 days.
  • Clinical studies show that psilocin concentrations in the plasma of adults average about 8 µg/liter within 2 hours after ingestion of a single 15 mg oral psilocybin dose; psychological effects occur with a blood plasma concentration of 4–6 µg/liter. Psilocybin is about 100 times less potent than LSD on a weight per weight basis, and the physiological effects last about half as long.
  • Within 24 hours from administration 65% of the alucinogen is escreted by urine, while another 15-20% is excreted by bile and feces.
  • Monoamine oxidase inhibitors (MAOI) have been known to prolong and enhance the effects of psilocybin. Alcohol consumption may enhance the effects of psilocybin, because acetaldehyde, one of the primary breakdown metabolites of consumed alcohol, reacts with biogenic amines present in the body to produce MAOIs related to tetrahydroisoquinoline and β-carboline. Tobacco smokers can also experience more powerful effects with psilocybin, because tobacco smoke exposure decreases levels of MAO in the brain and peripheral organs.
  • This could lead to a lower usage o f glucose, but the same study admitted an increase glucose usage by the whole brain cell, meaning a differente use of this sugar while the drug is having effects.
  • use of MRI (functional magnetic resounance) showed that the decresed blood flow associate with decreasing in neural activity. A simple explanation for this unexpected situation could be the serotoning agonist action of psilocybin, action that seems to be focused more on 5-HT receptors than on 5-HT2A.
  • psilocibyn is able to act as a 5-HT agonist binding directly its receptors.
  • augmented glucose consumption in several brain regions; this lead to the conclusion that psilocybin is some way able to modify the physiological glucosal metabolic rate of our body
  • The strong inibition of the PCC is now thought to be most significant action of psilocybin on neural disaccoppiation
    • Kenuvis Romero
       
      Lower brain glucose metabolism is linked with increased capacity for working memory.
  • Psilocybin comprises approximately 1% of the weight of Psilocybe cubensis mushrooms, and so nearly 1.7 kilograms (3.7 lb) of dried mushrooms, or 17 kilograms (37 lb) of fresh mushrooms, would be required for a 60-kilogram (130 lb) person to reach the 280 mg/kg LD50 value.
  • psilocybin can cause anxiety and increased heart rate and BP which is very counter- productive for someone on metoprolol and micardis.
  • propose the possibility to use psilocybin as a palliative therapy for terminal illness like cancer but also as a real antidepressive active principle available for the family of the patient. The rational is foundable in the fact that we usually administer SSRI as antidepressive agents, so psilocibyn sholud be useful in this purpose for its selective agonist action on 5-HT2A receptors
Tony Baldasaro

Inversions - Practical Theory - 1 views

  • Then, class, rather than being a time when all kids sat and received the instruction, could be the time when they reinforce skills by doing problem sets, worked on real-world application projects, collaborated with teachers to reinforce concepts, etc... in some ways, it's an inversion of what we traditionally think of as a math class.
  • If we use technology to invert that idea, so that kids could watch the teacher's demonstration of the skills and concepts at home (and with the ability to rewind when necessary,) we could allow kids the opportunity to apply and practice their knowledge in the space where they can get help, collaborate, etc... doesn't that make more sense? (Interestingly, I was trying to imagine what that would look like in an English classroom, and I realized that is, in many respects, similar to what we do already when we ask kids to read the book at home, and then come in and interact with the community to uncover the deeper aspects of the text. Hm.)
  •  
    I'm about 80% of the way through Disrupting Class by Clayton Christensen and Michael Horn. (Yeah, I know... I'm the last one to read it.) There's a lot that's very interesting about the book, and while we should critically examine the book, it is still a fascinating read. If nothing else, it is continuing to make me think about how much more could happen in our classrooms if we created more opportunities for students to learn basic skills and content outside of class, rather than inside class. I've been thinking a lot about math class. How many students would learn math more efficiently if they could watch math videos, narrated by a teacher with problems done "on the board" as they watched with multiple examples of concepts (think geometry here, as an example) that speak to different learning modalities.
Morris McRae

Avalon Project - Documents in Law, History and Diplomacy - 30 views

  •  
    The Avalon Project is a site from Harvard University that contains thousands of documents relevant to Law, History, Economics, Politics, Diplomacy and Government. These documents also include links to supporting documents that were referred to in the text. The documents are sorted by date range and go all the way back to 4000BC. The documents are fully searchable and are also sorted by collections such as American Revolution, Jefferson Papers, Geneva Convention, the Middle East, and more. There are even transcripts of witness testimony in the Nuremberg Trials. Pretty amazing stuff. This is a priceless resource for any educator or student, teaching or learning, reading or researching these topics. These documents are primary sources and can be used for a variety of learning.
  •  
    The Avalon Project will mount digital documents relevant to the fields of Law, History, Economics, Politics, Diplomacy and Government. We do not intend to mount only static text but rather to add value to the text by linking to supporting documents expressly referred to in the body of the text. The Avalon Project will no doubt contain controversial documents. Their inclusion does not indicate endorsement of their contents nor sympathy with the ideology, doctrines, or means employed by their authors. They are included for the sake of completeness and balance and because in many cases they are by our definition a supporting document.
Virginia Meadow

Diigo Tutorials - 4 views

  • Diigo Tutorials Last edited September 19, 2008 More by Cliotech - Jennifer Dorman »
  • #6: Hate photocopying and assembling bulky, wasteful handouts? Save time and money. Just tag the pages, including highlights and notes, you want to include, then quickly Extract all the information under that tag. Give students CDs containing copies of the HTML file which has links to all the original pages and includes highlighted passages and your notes, or print copies as you need them. Watch this demo to see how it's done.
    • Donna Lacon
       
      Teacher uses for instruction
  • #11: Whether you write a blog for colleagues or to keep your students infromed, Diigo offers several useful features. You can blog directly from the Diigo toolbar, with a link to the page you're writing about as well as your highlights and notes already added to the post. Diigo will also send a linkroll of resources you've saved directly to your blog with no extra effort on your part.
  • ...3 more annotations...
  • As you build your lesson plan, tag each resource by unit or by week, highlight passages you want to draw students' attention to, and add your own notes to guide them. You can also 'chain' resources by simply adding a link to the next page at the bottom of each note. Diigo's flexibility gives you freedom to use just the structure that is right for your needs and the needs of your classes.
  • Keep up with changes, and always offer your students the latest, most accurate information. By finding frequently updated academic or educational sites on the Web, you can provide them with the most current and relevant material. All you need to do is delete links that have become useless, add the new ones you want, and when you extract the entire topic everything will be up to date.
  • Share anything you find with a colleague, including your highlights and notes, even if they don't use Diigo. Simply use the Forward feature, and Diigo will send anyone you choose a link to the original page along with the text you highlighted, your notes, and any comments you choose to add. All with no cutting, pasting, or going to another window to compose an e-mail.
  •  
    Jennifer Dorman's Google Notebook listing Diigo Tutorials. Jennifer if obviously deep into diigo and generously sharing her resources in the best web 2.0 tradition. Check out the list of twelve uses for diigo at the bottom of the page! (I'll highlight a few.)
  •  
    How to get access to this demo?
  •  
    tutorials for diigo
salonzo

Diigolet | Diigo - 32 views

shared by salonzo on 27 Mar 09 - Cached
  • feature-rich as the Diigo
    • amber morse
       
      this is really cool, you should try it!
    • Yang-Hsueh Chen
       
      ok
    • Kathy Hannon
       
      It is really cool
    • Weston Taylor
       
      I just love having bookmarks all in one location and being able to email someone a link...
    • Sarah Miller
       
      Not super compatible with google docs in the chrome browser :(
    • sixthgrade11
       
      i feel like i am aadvertizing some thing with this converstation!?!?!?!?!?
    • sixthgrade11
       
      Yes, I love that too
  • bookmarking sites, Diigolet is a "super bookmarklet
  • can be set-up by simple drag-and-drop - no download or installation needed, and it works for all major browsers. Much more powerful than bookmarklets offered by other social
  • ...5 more annotations...
  • Make sure your "Favorites
  • marklets offered by other so
  • addition to si
    • mike barnett
       
      This is great!!!
  • allows
  • Make sure your "Favorites
  •  
    Diigolet is not as feature-rich as the Diigo toolbar, but it can be set-up by simple drag-and-drop - no download or installation needed, and it works for all major browsers. Much more powerful than bookmarklets offered by other social bookmarking sites, Diigolet is a "super bookmarklet" that allows you to highlight and add sticky-notes, in addition to simple bookmarking.
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