投稿時間:2023-04-17 00:12:25 RSSフィード2023-04-17 00:00 分まとめ(14件)

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IT	気になる、記になる…	Apple、｢WWDC23｣ではMRヘッドセット・新型MacBook・各種最新OSを発表か	https://taisy0.com/2023/04/16/170713.html	apple	2023-04-16 14:58:57
AWS	AWS	Future Self – E2 Vani mentors STEM students, Part 2 | AWS Scholarship	https://www.youtube.com/watch?v=eFORHtcnRN0	Future Self E Vani mentors STEM students Part AWS Scholarship AWSScholarship MachineLearning AmazonStudent Learn more about the AWS AI ML Scholarship program Vani Agarwal an AWS AI ML Scholarship student returns to her high school in New Delhi India to mentor STEM students The scholarship program s neural networks module unlocked Vani s interest and passion for pursuing a career in Artificial Intelligence The AWS Artificial Intelligence AI and Machine Learning ML Scholarship program in collaboration with Udacity aims to help underrepresented and underserved high school and college students learn foundational machine learning concepts to prepare them for careers in artificial intelligence and machine learning Scholarship applications are now open Check out the Future Self Playlist Connect with Vani on LinkedIn Subscribe More AWS videos More AWS events videos ABOUT AWSAmazon Web Services AWS is the world s most comprehensive and broadly adopted cloud platform offering over fully featured services from data centers globally Millions of customers ーincluding the fastest growing startups largest enterprises and leading government agencies ーare using AWS to lower costs become more agile and innovate faster AWSScholarship MachineLearning AmazonStudent AIMLScholarshipProgram FutureSelf AWS Nanodegree AmazonWebServices Scholarship ArtificialIntelligence STEM Mentor Student MLScholarship CloudComputing	2023-04-16 14:00:25
python	Pythonタグが付けられた新着投稿 - Qiita	文学部卒社会人が大学院で人工知能研究に挑戦〜6日目〜	https://qiita.com/kawauma/items/174f33927e88414eb24a	qiita	2023-04-16 23:12:47
js	JavaScriptタグが付けられた新着投稿 - Qiita	Webの画面をPDFにしようとしてすべてが無に帰した話	https://qiita.com/tm1998/items/7b7cec12e428de13ac0b	画面	2023-04-16 23:09:54
Ruby	Rubyタグが付けられた新着投稿 - Qiita	AtCorderで自分が間違えた問題集	https://qiita.com/tiri/items/453be5213cb926f94f0f	ngetstoi	2023-04-16 23:56:52
Azure	Azureタグが付けられた新着投稿 - Qiita	Azure App ServiceでLaravelアプリを公開する	https://qiita.com/y__saito/items/9e1ec45989dc25f49e40	azureappservice	2023-04-16 23:14:04
技術ブログ	Developers.IO	使わなくなったノートパソコンにUbuntuをインストールしてみた	https://dev.classmethod.jp/articles/installed-ubuntu-on-a-disused-laptop/	toshiba	2023-04-16 14:00:20
海外TECH	MakeUseOf	Is the Windows Start Button Not Working? Here's How to Fix It	https://www.makeuseof.com/windows-start-button-not-working/	windows	2023-04-16 14:16:16
Apple	AppleInsider - Frontpage News	New MacBooks set for launch during June's WWDC	https://appleinsider.com/articles/23/04/16/new-macbooks-set-for-launch-during-junes-wwdc?utm_medium=rss	New MacBooks set for launch during June x s WWDCAside from the rumored headset Apple could be planning more hardware launches during WWDC with a collection of new MacBook models set to make an appearance While WWDC is supposed to be software and developer centric it has often been the venue for Apple to introduce some new hardware For it seems that the list of launches at the event can include some MacBook models According to Sunday s Power On newsletter for Bloomberg Mark Gurman offers that some new MacBook models will appear at the event However he stops short of stating what specific models are on the way Read more	2023-04-16 14:21:31
海外TECH	Engadget	Hitting the Books: Why nobody knows Hiram Maxim, inventor of the incandescent lightbulb	https://www.engadget.com/hitting-the-books-the-things-we-make-bill-hammack-sourcebooks-143058188.html?src=rss	Hitting the Books Why nobody knows Hiram Maxim inventor of the incandescent lightbulbOne detail that s often omitted from modern founders myths is whether or not said scion of capitalist success actually invented the thing they re famous for inventing Just like Elon Musk didn t invent electric vehicles so much as be the first to successfully market them to the American public Thomas Edison s contributions to the advent of electrified lighting too might be overstated In the excerpt below from his latest book The Things We Make The Unknown History of Invention from Cathedrals to Soda Cans Dr Bill Hammack YouTube s The Engineer Guy recounts the tale of Hiram Maxim an irrepressible engineer and inventor whose novel filament production method would have made him a household name ーhad Edison not reportedly made a clean steal of his revolutionary technology nbsp nbsp nbsp Sourcebooks IncExcerpted from The Things We Make The Unknown History of Invention from Cathedrals to Soda Cans nbsp by Bill Hammack PhD by Bill Hammack PhD Used with permission of the publisher Sourcebooks Inc All rights reserved In November the reading room of the Mercantile Safe Deposit Company located in the basement of one of the first skyscrapers glowed with the light of a four bulb chandelier and six bulbs in fixtures spaced along the walls An observer characterized this electric light as “very much like that of a first class oil lamp steadier than gas and of a yellow clear pleasant quality ーnothing like the “ghastly blue of a “flickering arc light nor was there the odor of burning gas instead the room s atmosphere “remain ed perfectly cool and sweet His only complaint was that the bulbs flickered slightly with every stroke of the engine that powered the generator This first commercial installation a spectacular achievement featured no bulbs manufactured by Thomas Edison although he had proudly announced his invention of the light bulb only a few months earlier to great press attention The bulbs at the Mercantile Company were those of the U S Electric Lighting Company a company driven forward by their irrepressible and energetic engineer Hiram Maxim Edison called Maxim s bulb “a clean steal of his lamp Yet Maxim had seventeen patents on incandescent lamps and his company controlled the patents of several other inventors also contemporary to Edison Maxim thought of himself as the inventor of the commercial light bulb “Every time I put up a light he complained “a crowd would gather everyone asking Is it Edison s This so irritated Maxim who noted that Edison at the time “had never made a lamp that he considering killing “on the spot the next person to ask him “Is it Edison s That the first commercialized light bulbs were not Edison s surprises because we love stories of sole inventors whose spark of inspiration revolutionized the world They give us narratives that are neat tidy and digestible but incomplete These stories hide the engineering method they bury the creativity of engineers smooth over struggles and sanitize choices that reflect cultural norms Perhaps no story persists more than Edison and his light bulb yet Edison was the tail end of a long list of light bulb innovators in a process of invention similar to that of the steam turbine in the next century In the forty years before Edison s first successful prototype at least twenty people presented patented and demonstrated incandescent lampsーusing electricity to heat a filament until it glowed The first recorded attempt was in almost a decade before Edison s birth by a Belgian inventor whose bulb used a strip of carbon as a filament A fair assessment of history would call these men inventors of the light bulb comparable to Edison especially in a world where Edison the so called inventor of the incandescent light bulb was forty years late to the idea of incandescent lighting But unlike with Edison we don t remember the names of these men because most of their bulbs burned for only a few seconds They had the necessary but thankless job of creating links in a chain of incremental advances that didn t yet produce an applicable or reproducible solution to the problem of darkness which so far could only be dispelled with fire until Edison created one of the links that did transforming from method into narrative Although Edison and his bulb end that length of the chain of innovators his link was no more an exercise or example of the engineering method than those that came before it only overcame a circumstantial threshold of usefulness In Edison focused the energy of his staff at the bustling Menlo Park Research Laboratory on finding a long lasting filament for the incandescent light bulb The staff worked to the rhythms of Edison “the central originating and guiding mind and personality as one worker noted describing work there as “a strenuous but joyful life for all physically mentally and emotionally Edison set the tone with long work hours into the night He often napped on the workbenches in Menlo Park and ate sparingly in increments of small snacks he thought were better for digestion although for his workers he had brought in often at midnight hamper baskets loaded with hot dinners of meat vegetables dessert and coffee But when Edison stood stretched hitched up his waistband and sauntered away all knew that dinner was over and work should resume In the late s Edison and his staff produced bulbs that looked much like a modern bulb a glass envelope fastened to a wooden base covered with copper strips and at its center a thin long delicate spiral of platinum Yet these bulbs failed Some yielded light as bright as a small bundle of today s Christmas lights for a few hours but most burned out quickly As Edison learned the temperature for the incandescence of platinum wire was near that of its melting pointーany fluctuations in the current and the platinum would melt Edison and his team tested an astonishing array of materials by some count sixteen hundred types They tested metals like platinum iridium ruthenium chromium aluminum tungsten molybdenum palladium manganese and titanium elements that sometimes behaved like metals including silicon and boron then a grab bag of materialsーcork wax celluloid and the hair from his employees beards After these his team moved to slivers of wood broom corn and paper Tissue paper covered with lampblack and tar and rolled into a rod glowed astonishingly well and for a good amount of time Edison refined this idea by “carbonizing cotton thread heating it without oxygen until the length of thread was blackened throughout From this thread he formed a long filament On October a bulb with a filament of this thread with all the air removed from the glass enclosure burned for more than half a day They were approaching the beginning of the commercial light bulb Seven months after that bit of carbonized thread showed promise they tried a piece of bamboo a six inch strip burned for three hours and twenty four minutes at seventy one candlepower about the brightness of a standard sixty watt bulb today “The best lamp ever yet made an Edison associate noted “here from vegetable Carbon From there Edison s team tested two hundred species of bamboo until they found a variety that was the best for manufacturing carbon filaments grown near Yawata Japan where Edison is still celebrated with a street named “Edison dori a bust of Edison in the town center and near a shrine a large monument dedicated to Edison With his specialized bamboo supply and method of manufacturing in place Edison was ready to light the world but Hiram Maxim beat him out of the gate Maxim s bulbs installed at the Equitable Life Building out classed Edison s “They have a rich golden tint resembling that of a wax taper said one reporter Another noted that Maxim “has invented a lamp which surpasses I believe even Edison s dreams When comparing the lamps reporters noted that Edison s had lower brightness than Maxim s or when of the same intensity as Maxim s they burned out in only a few hours By Maxim s own estimate the filaments in his bulbs could last forty days The dimness and shorter life of Edison s bulbs were the same thing Edison s bulbs could not tolerate as much current as Maxim s so if run at the same current Edison s bulbs would burn out quickly and to make them last longer Edison s were run at a lower current and thus were dimmer That Maxim could achieve this was unbelievable to Edison s staffーan outraged member of the Menlo Park staff ranted that it must be apparent to “any sane person that Maxim s bulb must be “but a copy of Edison s Surely thought Edison s employees only a well oiled machine like that of Menlo Park could produce a light bulb Inside Menlo Park glassblowers machinists engineers chemists and physicists churned out inventions like appliances on an assembly line while Maxim s ham handed U S Electric Lighting Company struggled to find enough resources to survive employees thought it likely to shut at any minute and even its own president described it as “helpless Their technical expertise was so low that they could not figure out as one employee later noted what “size wire would carry a certain number of lamps without overheating adding that “a number of mysterious fires about this time were probably the fruits of our ignorance Compared with Edison s factory line Menlo Park model Maxim s method of invention seemed scattershot Maxim was the classic American tinkerer once describing himself as a “chronic inventor Although self taughtーone biographer describes him as “semiliterate ーover his lifetime he invented an astonishing array of tools and toys Maxim developed methods to separate metals from their ores instruments to measure wind velocities vacuum cleaners novelty items that produced “illusionary effects ーa rotating sphere with concave paraboloidal floor mirrors and a bicycle track presumably to create the illusion of riding a bike long distancesーgear to prevent the rolling of ships riveting machines feed water check valves steam generators wheels for railroads and tramways an inhaler to treat bronchitis boot and shoe heel protectors hair curling irons a method for demagnetizing watches a type of pneumatic tire a coffee substitute a method for extinguishing fires in theaters and most surprising of all new advertising methodsーa rotating sign that works “even in very light airs And near the end of his life he invented the world s first successful machine gun Maxim s contribution to the light bulb was to improve the manufacture of filaments Filaments whether of bamboo or cardboard as in Maxim s case were converted to carbon by heating at high temperatures in the absence of oxygen until the cellulose in the material broke down leaving a hard carbon skeleton but uneven carbonization caused thinner sections to become much hotter when lit with an electrical current and burn out more quickly Maxim s insight was to place a carbonized filament into a hydrocarbon atmosphere then pass through it an electrical current that heated the filament to a bright red The thinner and hotter parts of the filament would break down the vaporous hydrocarbon surrounding them and deposit pure carbon on the filament building up layers of carbon on the thinner parts and resulting in a filament of uniform thickness and greater life span As Maxim gloated “it is absolutely impossible by mechanical means to make a carbon filament that is of uniform resistance without his patented method adding that Edison “had to use my process or give up the job Maxim s attitude was prompted by the rivalry that burned between the many engineers competing in a world eager for the magic of electrical lighting but it also shows us the problem with crediting any individual with the complete “invention of any technology We tend to tell the stories of inventors who through their unique intellect and drive produce an equally unique marvel at the climax of a story with a beginning middle and end That is often how this book has told it out of deference to individual humans need to relate to the stories of other individual humans But the engineering method is uninterested in this “great men historical framework It cares only about the accumulated knowledge heuristics rules of thumb intuition and anything else that drives problems in the direction of solutions as fast as possible the sum of which even for a single solution is beyond unthinkable for a lone person to create themselves This web of information is so vast incomprehensibly vast so we make it comprehensible and moving by telling the stories of individual inventors even if this distorts the unknowable true web of invention Maxim is likely unrecognized as an inventor today because he lacked Edison s agile self promotion and because in a sense Edison “won and thus told the story of the light bulb s invention But did Edison “invent a light bulb when his company produced a brilliantly glowing but short lived electric light Perhaps When we think of an invented technology we typically imply technology that not only exists but is reproducible in a way that can fulfill the needs of those whose problem it solves That is it can be manufactured or mass produced A handful of working light bulbs in the late s is a marvel but it doesn t light the world In this sense the invention of the light bulb was a decades long process of incremental changes to create a filament that can be manufactured reliably and extended beyond Edison and Maxim alone To tell only a “great man story hides the contributions of others who were essential to a technology s development We can see that in the evolution of the manufacturing techniques of Maxim s light bulbs he had on staff an artistic draftsman turned engineer whose contributions to reliable manufacturing have long been overlooked This article originally appeared on Engadget at	2023-04-16 14:30:58
海外科学	NYT > Science	New Mars Map Lets You ‘See the Whole Planet at Once’	https://www.nytimes.com/2023/04/15/science/astronomy-mars-atlas.html	planet	2023-04-16 14:36:33
ニュース	BBC News - Home	Alabama shooting: Four dead at Dadeville 16th birthday party	https://www.bbc.co.uk/news/world-us-canada-65293737?at_medium=RSS&at_campaign=KARANGA	media	2023-04-16 14:53:47
ニュース	BBC News - Home	New smart motorway plans being scrapped	https://www.bbc.co.uk/news/uk-65288852?at_medium=RSS&at_campaign=KARANGA	shoulders	2023-04-16 14:40:02
ニュース	BBC News - Home	World Snooker Championship 2023: Neil Robertson sweeps Wu Yize aside in first round	https://www.bbc.co.uk/sport/snooker/65293696?at_medium=RSS&at_campaign=KARANGA	World Snooker Championship Neil Robertson sweeps Wu Yize aside in first roundNeil Robertson produces a sublime display to defeat Chinese debutant Wu Yize in the first round of the World Championship in Sheffield	2023-04-16 14:50:09