投稿時間:2021-12-25 05:16:54 RSSフィード2021-12-25 05:00 分まとめ(21件)

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海外TECH	MakeUseOf	How to Install Brushes in Procreate	https://www.makeuseof.com/tag/install-brushes-procreate/	procreate	2021-12-24 19:45:22
海外TECH	MakeUseOf	How to Choose a Slack Theme (or Make Your Own)	https://www.makeuseof.com/how-to-choose-slack-theme-make-own/	slack	2021-12-24 19:45:22
海外TECH	MakeUseOf	8 Fantastic Projects Using an E-Ink Display	https://www.makeuseof.com/fantastic-projects-using-an-e-ink-display/	display	2021-12-24 19:30:12
海外TECH	MakeUseOf	How Hackers Are Using Our Own Technology Against Us	https://www.makeuseof.com/how-hackers-are-using-technology-against-us/	yours	2021-12-24 19:15:12
海外TECH	MakeUseOf	Need a Last Minute Gift? Bluetti Is Offering Big Savings on Power Stations This Christmas	https://www.makeuseof.com/bluetti-power-stations-christmas-sale/	battery	2021-12-24 19:05:11
海外TECH	DEV Community	Understanding Built In Angular Directives - Part 5	https://dev.to/anubhab5/understanding-built-in-angular-directives-part-5-gli	Understanding Built In Angular Directives Part Today we will cover another important structural directive provided by the Angular Team ngForngForThe ngFor directive is used to loop through an array of items in the template The element where the directive is written becomes the parent which is repeated Lets see that in practice We need to update our structural directive demo component ts file and add the below code itemsToBuy Pencil Notebook School bag Eraser and in component template file add the below code lt div ngFor let item of itemsToBuy gt item lt div gt Now if you start the application and open localhost in the browser you would see the below output Now lets understand the below code ngFor let item of itemsToBuy Here ngFor is a structural directive so the is appended at the start followed by the equals operator Here itemsToBuy is the array we declared in the component TS file We use the for of syntax to loop through the array Every item in the array is assigned to the variable item which is then printed in between div tag by using the item The loop is auto incremented and moves to the next item until all the items are printed In the above example item variable holds a string value Similarly the array can also be a list of objects In that case at every iteration item would hold an object A word of CautionYou should not use two structural directives on the same element For example ngIf and ngFor at the same div element is not allowed That s all about ngFor Hope you enjoyed the post Please like comment and shareThe last structural directive is on your way So stay tuned Cheers Happy Coding	2021-12-24 19:40:23
海外TECH	DEV Community	Aspiring 16 year old quant developer contributing to Open Source Application	https://dev.to/northern64bit/aspiring-16-year-old-quant-developer-contributing-to-open-source-application-16k4	Aspiring year old quant developer contributing to Open Source ApplicationYou may wonder who I am after reading the title I m a year old who is in high school with the dream of becoming a quant developer This is my dream as I know this role comes with many flexible tasks it uses math amp finance which I find very interesting and where I can apply my coding skills I have been developing computer programs since I was years old The first programming language I learned was html if you even dare to call it one Quickly after this I learned JavaScript Python and then C Python is by far my favourite programming language since it s easy to use clear and has many powerful libraries I started to make my own programs and discovered that I could use Python libraries to speed up development From this I learned about open source projects which helped me a lot as I was able to read code from more experienced developers which helped me learn solutions in my code and improved my coding skills After a while I thought it was time to publish my own open source repository A stocks discord bot which is a bot version of one of my GitHub stock programs to possibly help other developers and traders Another thing that I ve heard that s very important is networking So I thought that it would be best to contribute to a project with a large community high coding standard to learn from it and experienced contributors that are ready to help If I stick to this I thought I may even get to get some valuable connections to industry professionals In August I sent a message to the Gamestonk Terminal GST Discord after seeing their brilliant work and discovering it At that time I was working on my previously mentioned open source Discord bot and was motivated to continue with it However I immediately changed my mind after seeing all the features of GST and their contributor s work The repository was nearly a match made in heaven since it was scripted in python has multiple pull requests merged every day and maintains high code standard by experienced developers In addition it s the best financial open source project on GitHub at least according to me Based on my experience with Discord bots I got the idea of implementing one specifically for GST The more I thought about it the better of an idea it was in my mind The reasons were that the bot can be widely distributed to phones since it s so easy to use via the Discord chat and can even be used by non tech savvy users a bot makes it easier to get fresh and easily shareable data for your investment conversations I knew that by adding the bot to GST the project would grow and be better since more users would get to know it So I asked in the Discord server of the repository if I could help and possibly make a Discord bot to make it more widely distributed and usable on the phone To my surprise the response was very positive and I started to develop it right away In the beginning I was a bit lost since I have never thought about code architecture most of my other applications were a lines in one huge file and I got the responsibility of the whole project These troubles got quickly fixed after some calls with the creator of GST Didier R Lopes who really helped me I learned lots about making a robust structured and easily understandable application From then on it was just adding feature after feature and improvements from many other GST contributors This was the case until I had several difficult challenges The first one was that we wanted to implement a menu like the terminal has this was solved by adding reactions to the message so the user could select the command through a reaction The next challenge was when a menu had more than commands which I solved by implementing “pagination which is a sort of scrolling system via buttons formatting the message like a book However this resulted in an additional bug with the emoji detection system due to it being loop and the “pagination being a loop too Therefore I started to experiment with multithreading of which I knew nothing about But after some time I managed to merge the code bits from the two loops together into one loop Overall the development process was exciting and a great learning experience that I wish every other young developer can have My two cents are to make real useful code with simplicity and understandability in mind to improve your code since it helps more than leetcode and super theoretical programs that never can be contributed to by other programmers The hard part or rather the time consuming part is to understand code from other people to the extent that you can contribute to it in a meaningful way so I needed to learn to use many other libraries This is not meant to discourage you but to get real hands on experience with the libraries It s also more meaningful to learn more new libraries and function if it has a purpose The Discord bot has a multitude of functions from the terminal and is easy to set up amp host so that it s easy to use the terminal on any device and to share it with other people It s also awesome to use it to show the underlying data of your investing thesis quickly to your friends in your own Discord server Here s a link to it Currently I m looking forward to improving the bot and continue to work with the GST team My long term goal is to become a quant quantitative analyst researcher developer but there s a long way there since I m currently only in high school Thus I m ready to contribute on other finance open source applications at any time so please contact me on GitHub Merry Christmas northern bit	2021-12-24 19:26:40
Apple	AppleInsider - Frontpage News	Apple worker walkout organizers issue demands, size of strike unclear	https://appleinsider.com/articles/21/12/24/apple-worker-walkout-organizers-issue-demands-size-of-strike-unclear?utm_medium=rss	Apple worker walkout organizers issue demands size of strike unclearApple corporate and retail workers are holding a walkout on Christmas Eve to demand better working conditions and have issued a list of demands ーbut it isn t clear how many staffers are participating Apple ParkThe labor walkout called for on Thursday and executed on Friday urges consumers not to shop in stores or online It calls for Apple to meet a number of demands including hazard pay benefits for part time workers and protections from abusive customers Read more	2021-12-24 19:05:05
海外TECH	Engadget	NASA's $10 billion James Webb Space Telescope will study the universe's origins	https://www.engadget.com/nasa-10-billion-james-webb-space-telescope-will-study-universe-origins-180049573.html?src=rss	NASA x s billion James Webb Space Telescope will study the universe x s originsFor the past years the Hubble Space Telescope has been an invaluably versatile observation platform for astronomers but it s begun showing its age of late Last serviced in the telescope has had to enter the partial shutdown “safe mode multiple times over the last few years ーmost recently this October And while optimistic estimates suggest that the Hubble could remain in operation through the end of the decade NASA with its ESA and CSA partners have already spent more than a dozen years developing a successor the James Webb Space Telescope JWST When the Webb launches ーcurrently set for liftoff on Christmas Day ーit will take over as humanity s preeminent eye in the sky for decades to come The ton JWST will be the largest telescope NASA has ever put into orbit Its meter primary mirror array ーcomposed of gold plated hexagonal segments ーis more than twice the size of the Hubble s and nearly times larger in area than the Spitzer Telescope which retired in The sun shield it uses to protect its delicate infrared sensors is nearly as long as a tennis court and the telescope apparatus as a whole stands three stories tall The gigabits of data collected daily will be first routed through NASA s Deep Space Network then transmitted to the Space Telescope Science Institute in Baltimore Maryland which will collate and disseminate that information to the greater astronomy community When it reaches its orbital home at the L Lagrange point miles from Earth the JWST will begin its four point mission searching for light from the earliest post Big Bang stars studying the formation and development of galaxies examining the evolution of stars and planetary systems and seeking out the origins of life To do so the Webb will take a different approach from the Hubble before it While the Hubble looked at the universe in the visible and ultraviolet spectrums the JWST will see in infrared just as the Spitzer used to but with far greater resolution and clarity Using this infrared is critical to the Webb s mission as that wavelength can peer through clouds of interstellar gasses and dust to see otherwise obscured objects beyond NASA Chris GunnThe Webb s camera suite is made up of four individual components the Mid Infrared Instrument MIRI Near Infrared Camera NIRCam Near Infrared Spectrograph NIRSpec and the Near Infrared Imager and Slitless Spectrograph Fine Guidance Sensor NIRISS FGS These instruments are actually so sensitive that they can detect their own heat radiation when they re operating To minimize these infrared emissions three of the sensors are chilled to negative degrees Fahrenheit degrees C The especially sensitive MIRI is cooled even further to degrees F degrees C ーthat s a mere degrees Kelvin above absolute zero Getting the MIRI that cold is no easy feat After the JWST makes its way into orbit the telescope will spend weeks slowly chilling the sensor to its optimal operating temperature using a helium based refrigeration system “It s relatively easy to cool something down to that temperature on Earth typically for scientific or industrial applications said JPL cryocooler specialist Konstantin Penanen in a recent NASA blog post “But those Earth based systems are very bulky and energy inefficient For a space observatory we need a cooler that is physically compact highly energy efficient and it has to be highly reliable because we can t go out and repair it So those are the challenges we faced and in that respect I would say the MIRI cryocooler is certainly at the cutting edge The extra effort that MIRI requires will be well worth it as ground based infrared telescopes ーespecially those operating within the mid infrared spectrum as MIRI is are largely hampered by heat emissions from the devices themselves and the surrounding atmosphere “With the other three instruments Webb observes wavelengths up to microns Adding wavelengths out to microns with MIRI really increases its range of science George Rieke professor of astronomy at the University of Arizona said earlier this month in a NASA blog “This includes everything from studying protostars and their surrounding protoplanetary disks the energy balance of exoplanets mass loss from evolved stars circumnuclear tori around the central black holes in active galactic nuclei and a lot more NASAGiven the JWST s highly specific low temperature needs keeping the telescope s sensor suite out of direct sunlight and blocked from other light sources like the Moon and Earth is crucial To ensure that those cameras are perpetually shaded NASA engineers have built a five layer sunshield made from aluminum coated Kapton film to keep them in the cold cold dark quot The shape and design also direct heat out the sides around the perimeter between the layers quot said James Cooper the JWST s Sunshield Manager at Goddard Space Flight Center quot Heat generated by the Spacecraft bus at the core or center is forced out between the membrane layers so that it cannot heat up the optics quot Measuring feet by feet by inches the kite shaped sun shield is stacked five layers high so that energy absorbed by the top layer radiates out into space between them making each successive layer slightly cooler than the one above it In fact the temperature difference at the outermost K or degrees F and innermost layers K about degrees F is roughly an order of magnitude NASAIn order to collect enough light to view the fainest most distant stars possible ーsome as far as billion light years away ーthe JWST will rely on its massive m primary mirror array Unlike the Hubble which utilized a single m wide mirror the Webb s mirror is divided into individual segments each weighing just pounds thanks to their beryllium construction They re coated in gold to enhance their reflection of infrared light and hexagonal in shape so that when fully assembled in orbit they ll fit together snugly enough to act as a single symmetrical gapless reflective plane Their small size also allows them to easily be split up and folded down in order to fit within the tight confines of the Ariane rocket they ll ride into orbit ESAThe role of coordinating these segments to focus on a single spot in a distant galaxy falls to the mirrors actuator assembly Seven small motors sit on the backside of each mirror segment one at each corner and a seventh in the middle enabling precise control of their orientation and curvature quot Aligning the primary mirror segments as though they are a single large mirror means each mirror is aligned to th the thickness of a human hair said Webb Optical Telescope Element Manager Lee Feinberg After plus years of development and delays costing billion and involving the efforts of more than people the Webb Telescope is finally ready for launch ーand hopefully this time it ll actually take The program has seen delay after delay after delay to its launch schedule NASA abandoned the initial date of March in the wake of the initial COVID outbreak and its associated lockdowns ーthough to be fair the GAO in January had only given the JWST a percent chance of getting off the ground by the end of this year ーand set a vague “sometime in timetable for its launch NASANASA later revised that estimate to a firm “sometime in October eventually settling on a Halloween launch window only to delay it again to late November early December Of course early December quickly became late December specifically the nd which was then nudged back once again to its current date of December th Actually make that the th These delays have been caused by the myriad factors that go into getting an instrument of this size and sensitivity ready for launch After completing its construction the JWST had to undergo an exhaustive battery of tests then be gently loaded into a shipping container and transported to its launch site in Kourou French Guiana Once there the actual task of prepping fueling and loading the JWST onto an Ariane rocket took another days That timeline was further extended due to an “incident on November th wherein “a sudden unplanned release of a clamp band ーwhich secures Webb to the launch vehicle adapter ーcaused a vibration throughout the observatory per NASA The Webb s anomaly review board initiated an additional round of testing to ensure that those vibrations didn t damage other components or knock anything important out of alignment NASANow that the telescope has been deemed A OK final preparations are underway Barring any more setbacks the JWST will launch at ET on Christmas Day watch here live to begin its day million kilometer long journey out the Lagrange where it will spend the net two weeks slowly unfurling its mirrors and sunshield then begin exploring the depths of the early universe	2021-12-24 19:00:49
ビジネス	ダイヤモンド・オンライン - 新着記事	イオン・ドンキ・ヨーカ堂…同じ前年実績割れでも「大格差」、一番マズいのは？ - コロナで明暗！【月次版】業界天気図	https://diamond.jp/articles/-/291266	イオン・ドンキ・ヨーカ堂…同じ前年実績割れでも「大格差」、一番マズいのはコロナで明暗【月次版】業界天気図コロナ禍から企業が復活するのは一体、いつになるのだろうか。	2021-12-25 04:52:00
ビジネス	ダイヤモンド・オンライン - 新着記事	「優秀で熱い社員が集まる会社」と「冷め切った会社」の違い - 小宮一慶の週末経営塾	https://diamond.jp/articles/-/291626	小宮一慶	2021-12-25 04:50:00
ビジネス	ダイヤモンド・オンライン - 新着記事	探偵もビックリ！女社長からの尾行依頼で絶体絶命の失態も、意外な結末が - オオカミ少年片岡の「あなたの隣に詐欺師がいます。」	https://diamond.jp/articles/-/291624	探偵もビックリ女社長からの尾行依頼で絶体絶命の失態も、意外な結末がオオカミ少年片岡の「あなたの隣に詐欺師がいます。	2021-12-25 04:45:00
ビジネス	ダイヤモンド・オンライン - 新着記事	aikoの結婚に喜び叫ぶ中年男性たち、青春を彩ってくれた歌に感謝と賛美 - 井の中の宴 武藤弘樹	https://diamond.jp/articles/-/291623	中年男性	2021-12-25 04:40:00
ビジネス	ダイヤモンド・オンライン - 新着記事	パリ3大百貨店のクリスマス装飾が素敵！シャネルやプラダ版も【地球の歩き方】 - 地球の歩き方ニュース＆レポート	https://diamond.jp/articles/-/291437	パリ大百貨店のクリスマス装飾が素敵シャネルやプラダ版も【地球の歩き方】地球の歩き方ニュースレポート月に入りパリはすっかりクリスマスの準備が整いました。	2021-12-25 04:35:00
ビジネス	ダイヤモンド・オンライン - 新着記事	ネット流行語大賞になった「ウマ娘」、SNSでバズらせた制作陣の“仕掛け”と“愛” - from AERAdot.	https://diamond.jp/articles/-/291375	今年で回目となる「ネット流行語」はニコニコ大百科とピクシブ百科事典が主催する。	2021-12-25 04:30:00
ビジネス	ダイヤモンド・オンライン - 新着記事	ランボルギーニとコラボしたゲーミングチェア、そのこだわりとは？ - 男のオフビジネス	https://diamond.jp/articles/-/291351	ランボルギーニとコラボしたゲーミングチェア、そのこだわりとは男のオフビジネスシンガポールのシークレットラボは、ゲーミングチェアの設計・製造・販売を行う家具メーカー。	2021-12-25 04:25:00
ビジネス	ダイヤモンド・オンライン - 新着記事	電子タバコが大腿骨頸部や脊椎、手首を骨折するリスクを46％も増やす!? - ヘルスデーニュース	https://diamond.jp/articles/-/291621	電子タバコが大腿骨頸部や脊椎、手首を骨折するリスクをも増やすヘルスデーニュース電子タバコによる健康への悪影響に関する研究が増えているが、新たに骨折リスクとの関連が報告された。	2021-12-25 04:20:00
ビジネス	ダイヤモンド・オンライン - 新着記事	「刺さる商品開発」を実現できるリサーチ法とは？課題に応じた18の解決策がある - クロス・マーケティング発！学びの動画	https://diamond.jp/articles/-/285758	「刺さる商品開発」を実現できるリサーチ法とは課題に応じたの解決策があるクロス・マーケティング発学びの動画ビジネスパーソンにとって必須のスキルといっても過言ではないマーケティング・リサーチ。	2021-12-25 04:15:00
ビジネス	ダイヤモンド・オンライン - 新着記事	「本当に頭のいい子」に育つ英語の正しい学び方とは？ - 世界最高の子ども英語	https://diamond.jp/articles/-/290001	世界最高	2021-12-25 04:10:00
ビジネス	ダイヤモンド・オンライン - 新着記事	ひろゆきが明かす「ものすごくお金儲けできる人が必ず持っている、ある特徴」ベスト1 - 1％の努力	https://diamond.jp/articles/-/289908	youtube	2021-12-25 04:05:00
ビジネス	東洋経済オンライン	北海道の｢キハ40｣､周遊パスで乗り尽くせるか 残り少なくなった国鉄時代の気動車で冬の旅 | 旅･趣味 | 東洋経済オンライン	https://toyokeizai.net/articles/-/478491?utm_source=rss&utm_medium=http&utm_campaign=link_back	必要不可欠	2021-12-25 04:30:00