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James Wilcox

Airplane Timeline - Greatest Engineering Achievements of the Twentieth Century - 0 views

    • James Wilcox
       
      I love helicopters!  But I never knew that they had been around for so many years.
  • 1947   Sound barrior broken U.S. Air Force pilot Captain Charles "Chuck" Yeager becomes the fastest man alive when he pilots the Bell X-1 faster than sound for the first time on October 14 over the town of Victorville, California.
  • 1952   Discovery of the area rule of aircraft design Richard Whitcomb, an engineer at Langley Memorial Aeronautical Laboratory, discovers and experimentally verifies an aircraft design concept known as the area rule. A revolutionary method of designing aircraft to reduce drag and increase speed without additional power, the area rule is incorporated into the development of almost every American supersonic aircraft. He later invents winglets, which increase the lift-to-drag ratio of transport airplanes and other vehicles.
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  • 1925-1926   Introduction of lightweight, air-cooled radial engines The introduction of a new generation of lightweight, air-cooled radial engines revolutionizes aeronautics, making bigger, faster planes possible.
  •   1917   The Junkers J4, an all-metal airplane, introduced Hugo Junkers, a German professor of mechanics introduces the Junkers J4, an all-metal airplane built largely of a relatively lightweight aluminum alloy called duralumin.
  • 1904   Concept of a fixed "boundary layer" described in paper by Ludwig Prandtl German professor Ludwig Prandtl presents one of the most important papers in the history of aerodynamics, an eight-page document describing the concept of a fixed "boundary layer," the molecular layer of air on the surface of an aircraft wing. Over the next 20 years Prandtl and his graduate students pioneer theoretical aerodynamics.
  • 1933   First modern commercial airliner In February, Boeing introduces the 247, a twin-engine 10-passenger monoplane that is the first modern commercial airliner. With variable-pitch propellers, it has an economical cruising speed and excellent takeoff. Retractable landing gear reduces drag during flight.
  • 935   First practical radar British scientist Sir Robert Watson-Watt patents the first practical radar (for radio detection and ranging) system for meteorological applications. During World War II radar is successfully used in Great Britain to detect incoming aircraft and provide information to intercept bombers.
  • 1937   Jet engines designed Jet engines designed independently by Britain’s Frank Whittle and Germany’s Hans von Ohain make their first test runs. (Seven years earlier, Whittle, a young Royal Air Force officer, filed a patent for a gas turbine engine to power an aircraft, but the Royal Air Ministry was not interested in developing the idea at the time. Meanwhile, German doctoral student Von Ohain was developing his own design.) Two years later, on August 27, the first jet aircraft, the Heinkel HE 178, takes off, powered by von Ohain’s HE S-3 engine.
  •   1939   First practical singlerotor helicopters Russian emigre Igor Sikorsky develops the VS-300 helicopter for the U.S. Army, one of the first practical singlerotor helicopters.
Mike Lemon

The ENIAC Story - 1 views

  • As in many other first along the road of technological progress, the stimulus which initiated and sustained the effort that produced the ENIAC (electronic numerical integrator and computer)--the world's first electronic digital computer--was provided by the extraordinary demand of war
  • This Department had the responsibility for the design, development, procurement, storage, and issue of all combat materiel and munitions for the Army. In 1939 it was staffed by a relative handful of officers and career civilian employees.
  • One of the extraordinarily important tasks
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  • was the preparation of firing and bombing tables for the Army which at that time, of course, included the Army Air Corps.
  • The analyzer installed at Aberdeen had ten integrating units and provisions for two input and two output tables as well. But, despite its value as an important mechanical aid to computation, it had several severe limitations.
  • It was, of course, known that the Moore School of Electrical Engineering of the University of Pennsylvania had a Bush differential analyzer of somewhat larger capacity than the one installed at Aberdeen. As a matter of fact, the one at the Moore School had fourteen integrating units. Therefore one of the first steps taken was the award to the University of Pennsylvania of a contract by the Ordnance Department for the utilization of this device.
  • he original agreement between the United States of America and the trustees of the University of Pennsylvania, dated June 5, 1943, called for six months of "research and development of an electronic numerical integrator and computer and delivery of a report thereon." This initial contract committed $61,700 in U.S. Army Ordnance funds
  • The ENIAC was placed in operation at the Moore School, component by component, beginning with the cycling unit and an accumulator in June 1944. This was followed in rapid succession by the initiating unit and function tables in September 1945 and the divider and square-root unit in October 1945. Final assembly took place during the fall of 1945. By today's standards for electronic computers the ENIAC was a grotesque monster. Its thirty separate units, plus power supply and forced-air cooling, weighed over thirty tons. Its 19,000 vacuum tubes, 1,500 relays, and hundreds of thousands of resistors, capacitors, and inductors consumed almost 200 kilowatts of electrical power. But ENIAC was the prototype from which most other modern computers evolved. It embodied almost all the components and concepts of today's high- speed, electronic digital computers. Its designers conceived what has now become standard circuitry such as the gate (logical "and" element), buffer (logical "or" element) and used a modified Eccles-Jordan flip-flop as a logical, high-speed storage-and-control device.
  • The ENIAC was not originally designed as an internally programmed computer. The program was set up manually by varying switches and cable connections. However, means for altering the program and repeating its iterative steps were built into the master programmer
  • The ENIAC led the computer field during the period 1949 through 1952 when it served as the main computation workhorse for the solution of the scientific problems of the Nation. It surpassed all other existing computers put together whenever it came to problems involving a large number of arithmetic operations. It was the major instrument for the computation of all ballistic tables for the U.S. Army and Air Force.
Gideon Burton

Op-Ed Contributor - How the Internet Got Its Rules - NYTimes.com - 2 views

  • We thought maybe we’d put together a few temporary, informal memos on network protocols, the rules by which computers exchange information
  • Less important than the content of those first documents was that they were available free of charge and anyone could write one. Instead of authority-based decision-making, we relied on a process we called “rough consensus and running code.”
  • Still fearful of sounding presumptuous, I labeled the note a “Request for Comments.”
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  • the R.F.C.’s themselves took root and flourished. They became the formal method of publishing Internet protocol standards
  • Our intent was only to encourage others to chime in, but I worried we might sound as though we were making official decisions or asserting authority.
  • It probably helped that in those days we avoided patents and other restrictions; without any financial incentive to control the protocols, it was much easier to reach agreement.
  • This was the ultimate in openness in technical design and that culture of open processes was essential in enabling the Internet to grow and evolve as spectacularly as it has
  • we always tried to design each new protocol to be both useful in its own right and a building block available to others. We did not think of protocols as finished products, and we deliberately exposed the internal architecture to make it easy for others to gain a foothold.
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    Stephen D. Crocker explains the early planning documents ("Requests for Comments") and how they exemplified and made possible the open nature of the web.
Gideon Burton

Top Internet engineers warn against SOPA - Post Tech - The Washington Post - 0 views

  • When we designed the Internet the first time, our priorities were reliability, robustness and minimizing central points of failure or control. We are alarmed that Congress is so close to mandating censorship-compliance as a design requirement for new Internet innovations. This can only damage the security of the network, and give authoritarian governments more power over what their citizens can read and publish. The US government has regularly claimed that it supports a free and open Internet, both domestically and abroad. We cannot have a free and open Internet unless its naming and routing systems sit above the political concerns and objectives of any one government or industry. To date, the leading role the US has played in this infrastructure has been fairly uncontroversial because America is seen as a trustworthy arbiter and a neutral bastion of free expression. If the US begins to use its central position in the network for censorship that advances its political and economic agenda, the consequences will be far-reaching and destructive.
Andrew DeWitt

Enhanced Linkrolls - 0 views

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    Add your bookmarks to you blog with this.  Choose your options, click create script, then add a hyper-text widget to your blog design.  Works great for me!
Erin Hamson

Preliminary Discourse - 0 views

    • Erin Hamson
       
      doesn't go with the divisions of the knowledge map
    • Erin Hamson
       
      and then this other paragraph begins the division
  • If one reflects somewhat upon the connection that discoveries have with one another, it is readily apparent that the sciences and the arts are mutually supporting, and that consequently there is a chain that binds them together. But, if it is often difficult to reduce each particular science or art to a small number of rules or general notions, it is no less difficult to encompass the infinitely varied branches of human knowledge in a truly unified system
  • We can divide all our knowledge into direct and reflective knowledge. We receive direct knowledge immediately, without any operation of our will; it is the knowledge which finds all the doors of our souls open, so to speak, and enters without resistance and without effort. The mind acquires reflective knowledge by making use of direct knowledge, unifying and combining it.
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  • Let us sto
  • p here a moment and glance over the journey we have just made. We will note two limits within which almost all of the certain knowledge that is accorded to our natural intelligence is concentrated, so to speak. [34] One of those limits, our point of departure, is the idea of ourselves, which leads to that of the Omnipotent Being, and of our principal duties. The other is that part of mathematics whose object is the general properties of bodies, of extension and magnitude. Between these two boundaries is an immense gap where the Supreme Intelligence seems to have tried to tantalize the human curiosity, as much by the innumerable clouds it has spread there as by the rays of light that seem to break out at intervals to attract us. One can compare the universe to certain works of a sublime obscurity whose authors occasionally bend down within reach of their reader, seeking to persuade him that he understands nearly all. We are indeed fortunate if we do not lose the true route when we enter this labyrinth! Otherwise the flashes of light which should direct us along the way would often serve only to lead us further from it. The limited quantity of certain knowledge upon which we can rely, relegated (if one can express oneself this way) to the two extremities of space to which we refer, is far indeed from being sufficient to satisfy all our needs. The nature of man, the study of which is so necessary and so highly recommended by Socrates, is an impenetrable mystery for man himself when he is enlightened by reason alone; and the greatest geniuses, after considerable reflection upon this most important matter, too often succeed merely in knowing a little less about it than the rest of men. The same may be said of our existence, present and future, of the essence of the Being to whom we owe it, and of the kind of worship he requires of us. Thus, nothing is more necessary than a revealed Religion, which may instruct us concerning so many diverse objects. Designed to serve as a supplement to natural knowledge, it shows us part of what was hidden, but it restricts itself to the things which are absolutely necessary for us to know. The rest is closed for us and apparently will be forever. A few truths to be believed, a small number of precepts to be practiced: such are the essentials to which revealed Religion is reduced. Nevertheless, thanks to the enlightenment it has communicated to the world, the common people themselves are more solidly grounded and confident on a large number of questions of interest than the sects  [35] of the philosophers have been.
    • Erin Hamson
       
      The role of religion is to fill in the gaps that man cannot discover on his own. The difference for us is that someday we will know.
  • The advantage men
  • found in enlarging the sphere of their ideas, whether by their own efforts or by the aid of their fellows, made them think that it would be useful to reduce to an art the very manner of acquiring information and of reciprocally communicating their own ideas. This art was found and named Logic. It teaches how to arrange ideas in the most natural order, how to link them together in the most direct sequence, how to break up those which include too large a number of simple ideas, how to view ideas in all their facets, and finally how to present them to others in a form that makes them easy to grasp. This is what constitutes this science of reasoning, which is rightly considered the key to all our knowledge. However, it should not be thought that it [the formal discipline of Logic] belongs among the first in the order of discovery. The art of reasoning is a gift which Nature bestows of her own accord upon men of intelligence, and it can be said that the books which treat this subject are hardly useful except to those who can get along without them. People reasoned validly long before Logic, reduced to principles, taught how to recognize false reasonings, and sometimes even how to cloak them in a subtle and deceiving form. [38]
    • Erin Hamson
       
      The last couple sentences are interesting because they talk about the human perspective timeline, how we seem to think that simply because something was recently discovered doesn't mean it didn't exist before then. Atom for examplke have always existed but we only recently have begun to discover their true nature.
  • Too much communication can sometimes benumb the mind and prejudice the efforts of which it is capable. If one observes the prodigies of some of those born blind, or deaf and mute, one will see what the faculties of the mind can perform if they are lively and called into action by difficulties which must be overcome.
  • The science of communication of ideas is not confined to putting order in ideas themselves. In addition it should teach how to express each idea in the clearest way possible, and consequently how to perfect the signs that are designed to convey it; and indeed this is what men have gradually done.
    • Erin Hamson
       
      The importance of both sharing ideas, for the general benefit of man, and discovering things on our own, for our progression.
  • The general system of the sciences and the arts is a sort of labyrinth, a tortuous road which the intellect enters without quite knowing what direction to take. Impelled, first of all, by its needs and by those of the body to which it is united, the intelligence studies the first objects that present themselves to it. It delves as far as it can into the knowledge of these objects, soon meets difficulties that obstruct it, and whether through hope or even through despair of surmounting them, plunges on to a new route; now it retraces its footsteps, sometimes crosses the first barriers only to meet new ones; and passing rapidly from one object to another, it carries through a sequence of operations on each of them at different intervals, as if by jumps. The discontinuity of these operations is a necessary effect of the very generation of ideas. However philosophic this disorder may be on the part of the soul, [57] an encyclopedic tree which attempted to portray it would be disfigured, indeed utterly destroyed.
  • It is only after having considered their particular and palpable properties that we envisaged their general and common properties and created Metaphysics and Geometry by intellectual abstraction. Only after the long usage of the first signs have we perfected the art of these signs to the point of making a science of them. And it is only after a long sequence of operations on the objects of our ideas that, through reflection, we have at length given rules to these operations themselves.
  • nature of the different minds that determines which route is chosen
Sarah Wills

Intelligent Design FAQs & Primers - 1 views

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    quick facts of evolution vs. intelligent design
Katherine Chipman

The Engines - The Babbage Engine | Computer History Museum - 0 views

  • Difference engines are strictly calculators. They crunch numbers the only way they know how - by repeated addition according to the method of finite differences. They cannot be used for general arithmetical calculation. The Analytical Engine is much more than a calculator and marks the progression from the mechanized arithmetic of calculation to fully-fledged general-purpose computation.
  • Physical Legacy Aside from a few partially complete mechanical assemblies and test models of small working sections, none of Babbage's designs was physically realized in its entirety in his lifetime. The major assembly he did complete was one-seventh of Difference Engine No. 1, a demonstration piece consisting of about 2,000 parts assembled in 1832. This works impeccably to this day and is the first successful automatic calculating device to embody mathematical rule in mechanism. A small experimental piece of the Analytical Engine was under construction at the time of Babbage's death in 1871. Many of the small experimental assemblies survived, as does a comprehensive archive of his drawings and notebooks. The designs for Babbage's vast mechanical computing engines rank as one of the startling intellectual achievements of the 19th century. It is only in recent decades that his work has been studied in detail and that the extent of what he accomplished becomes increasingly evident.
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    Great explanation of the difference between difference engines and analytical engines.
Danny Patterson

Town's pride in nuclear past - 0 views

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    Excerpt on a city nearby a government isolated area designed to produce plutonium during the atomic age. Located in Richland, Washington and the place is Hanford.
Brad Twining

Don Norman on 3 ways good design makes you happy - 0 views

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    Interactive transcript with the video.
kosmik

Java course in Hyderabad - 0 views

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    If you're looking to learn Java in Hyderabad, Kosmik Technologies is a great place to start. With a team of experienced trainers and state-of-the-art facilities, Kosmik offers a comprehensive Java course that covers all aspects of the programming language. The course starts with an introduction to Java, covering topics like data types, control structures, and arrays. From there, you'll learn about object-oriented programming concepts like classes, objects, inheritance, and polymorphism. You'll also cover more advanced topics like interfaces, collections, and exception handling. The course is designed to be hands-on, with plenty of practical exercises and real-world examples. You'll get to work on projects that simulate real-world scenarios, giving you the opportunity to apply your newfound skills in a practical setting. At Kosmik, the trainers are not only knowledgeable and experienced, but also passionate about teaching. They take the time to explain complex concepts in a way that is easy to understand, and are always available to answer your questions and provide guidance. Overall, if you're looking for a comprehensive Java course in Hyderabad, Kosmik Technologies is an excellent choice. With its experienced trainers, practical approach, and state-of-the-art facilities, you'll get the skills and knowledge you need to succeed in the world of Java programming.
creative outdoors

Superb Creative Outdoor Ideas - 1 views

I have always wanted to build a patio to enjoy a lazy afternoon whilst looking out to my garden or where I can enjoy a cup of coffee during weekends as well as an area to receive and entertain gues...

started by creative outdoors on 31 Oct 12 no follow-up yet
Brian Earley

Rene Descartes perceptions of philosophy - 0 views

  • As Descartes said, “Those who set about giving precepts must esteem themselves more skilful than those to whom they advance them”
  • In other words, someone might alter the truth solely so they could come up with something to say, while the real truth might not be capable of being expressed so easily, it can only be observed. Some things in life are too complicated to express, but however there are going to be people who believe they can express those things, even though they cannot accurately do so.
    • Brian Earley
       
      I have read scientific journals wherein the author reports on complex interactions or relationships on the molecular level. Often I believe that they really cannot accurately do so. Perhaps scientific journals would be better if they were accompanied by videos. That would make them more like blog posts.
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  • are the emotions which are based off of your opinions even real, since they are based off of opinions?
  • Your perception is going to determine what it is that you feel, that is, your conscious and unconscious perception of what is going on is
  • For it seemed to me that I might meet with much more truth in the reasonings that each man makes on the matters that specially concern him, and the issue of which would very soon punish him if he made a wrong judgment, than in the case of those made by a man of letters in his study touching speculations that lead to no result, and that bring about no other consequences to himself excepting that he will be all the more vain the more they are removed from common sense, since in this case proves to him to have employed so much more ingenuity and skill trying to make them seem probable.
  • More especially did I reflect in each matter that came before me as to anything that could make it subject to suspicion of doubt, and give occasion for mistake, and I rooted out of my mind all the errors that might have formerly crept in. Not that indeed I imitated the skeptics, who only doubt for the sake of doubting, and pretend to by always uncertain; for, on the contrary, my design was only to provide myself with good ground for assurance, and to reject the quicksand and mud in order to find the rock or clay.”
  • since emotional intelligence is not completely concrete, it can be subject to skeptics
  • “how do I know that anything is even real”
  • Accordingly I shall now suppose, not that a true God, who as such must be supremely good and the fountain of truth, but that some malignant genius exceedingly powerful and cunning has devoted all his powers in the deceiving of me; I shall suppose that the sky, the earth, colors, shapes, sounds and all external things are illusions and impostures of which this evil genius has availed himself for the abuse of my credulity…”
  • I am, I exist. This is certain. How often? As often as I think. For it might indeed be that if I entirely ceased to think, I should thereupon altogether cease to exist. I am not at present admitting anything which is not necessarily true; and, accurately speaking, I am therefore [taking myself to be] only a thinking thing, that is to say, a mind, an understanding or reason-terms the significance of which has hitherto been unknown to me. I am, then a real thing, and really existent. What thing? I have said it, a thinking thing
  • So it really is thought that makes him who he is, since he is thinking about himself all of the time, in addition to thinking about and in regular life.
  • Thought determines who someone is because your thoughts are controlled, and all your thoughts over your lifetime caused your emotional development, which causes you to be who you are.
  • So it is easy to say that your thoughts understand and/or control who you are, but it is much harder to say that your emotions understand and/or control who you are.
  • I recognize it is impossible that He should ever deceive me, since in all fraud and deception there is some element of imperfection. The power of deception may indeed seem to be evidence of subtlety or power; yet unquestionably the will to deceive testifies to malice and feebleness, and accordingly cannot be found in God.
    • Brian Earley
       
      I think people in "The Matrix" would love Descartes
  • “To laugh often and much; To win the respect of intelligent people and the affection of children; To earn the appreciation of honest critics and endure the betrayal of false friends; To appreciate beauty, to find the best in others; To leave the world a bit better, whether by a healthy child, a garden patch, or a redeemed social condition; To know even one life has breathed easier because you have lived. This is to have succeeded”
  • conclusive as to whether or not pleasing other people infinitely is going to be self-beneficial, it could be considered a perfect thing to do since it is positively contributing to life.
    • Brian Earley
       
      The conclusion for me from this commentary is that thoughts are what make us who we are. Therefore, we must put a lot of our energy into controlling our thoughts so we can become what we want to be.
    • Brian Earley
       
      On my mission, I taught a lady that was offended to the point of tears when a member called the Prophet, the 'mouthpiece' of the Lord. She thought it as a very degrading term to call such a respectable man. Perceptions determine feelings.
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    This commentary explains the unique observations that Rene Descartes made of observations. I feel like I have had similar thoughts at times. I feel comforted knowing a dead French guy thought the same way that I think.
Mike Lemon

Calls for longer school years face budget reality - Yahoo! News - 0 views

    • Mike Lemon
       
      Is lengthening the school day or year the answer?
  • Education reformers have long called for U.S. kids to log more time in the classroom so they can catch up with their peers elsewhere in the world, but resistance from leisure-loving teenagers isn't the only reason there is no mass movement to keep schoolchildren in their seats. Such a change could cost cash-strapped state governments and local school districts billions of dollars, strip teachers of a time-honored perk of their profession, and irk officials in states that already bridle at federal intrusion into their traditional control over education.
  • Texas already forbids school from starting before the fourth Monday of August, a provision designed to save money on utility bills and increase business for tourist destinations and other summer attractions. "Ultimately the states, not the federal government, should have the final word on this and other public school decisions," said Lucy Nashed, a spokeswoman for Gov. Rick Perry. In Kansas, sporadic efforts by local districts to extend the school year at even a few schools have been met by parental resistance, said state education commissioner Diane DeBacker.
Katherine Chipman

Privacy and Online Information - Chris Hoofnagle Fall 2007 | OER Commons - 0 views

  • In this course students will first gain an understanding of the basics of how search engines work, and then explore how search engine design impacts business and culture. Topics include search advertising and auctions, search and privacy, search ranking, internationalization, anti-spam efforts, local search, peer-to-peer search, and search of blogs and online communities.
Katherine Chipman

The Crystal Palace/ The Great Exhibition of 1851 - 0 views

  • Over 13,000 exhibits were displayed and viewed by over 6,200,000 visitors to the exhibition.
  • The London Borough of Bromley, who own the park today, together with the Crystal Palace Foundation, have recently submitted an outline proposal the National Heritage Lottery Fund to restore much of the park to its former glory.
  • The Crystal Palace itself was destroyed by fire on  November 30th 1936, following which the area lost much of its focus and began to decline. But many of the most important events in the history of the Crystal Palace took place in the grounds, which retain much of their original overall layout today and are a Grade II listed historic park.
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  • The park also contained unrivaled collections of statues, many of which were copies of great works from around the world, and a geological display which included a replica lead mine and the first attempts anywhere in the world to portray life-size restorations of extinct animals, including dinosaurs.
  • This "bigger and better" building was divided into a series of courts depicting the history of art and architecture from ancient Egypt through  the Renaissance, as well as exhibits from industry and the natural world.
  • The Crystal Palace was originally designed by Sir Joseph Paxton in only 10 days and was a huge iron goliath with over a million feet of glass.
  • The Great Exhibition of 1851 in London was conceived to symbolize this industrial, military and economic superiority of Great Britain. 
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    More on the crystal palace.
Sarah Wills

PodOmatic | Best Free Podcasts - 0 views

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    Intelligent Design vs. Evolution. Darwin's contemporary (Alfred Russel Wallace) believed in something greater than man.
Rhett Ferrin

Crowdsourcing - 0 views

shared by Rhett Ferrin on 29 Sep 10 - Cached
    • Rhett Ferrin
       
      This is the author's blog about crowdsourcing, so this will give you relevant, up to date information.
  • Crowdsourcing: A Definition I like to use two definitions for crowdsourcing: The White Paper Version: Crowdsourcing is the act of taking a job traditionally performed by a designated agent (usually an employee) and outsourcing it to an undefined, generally large group of people in the form of an open call. The Soundbyte Version: The application of Open Source principles to fields outside of software.
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    Jeff Howe's blog about the topic he has championed in Wired and through his book Crowdsourcing.
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