投稿時間:2022-08-25 10:27:04 RSSフィード2022-08-25 10:00 分まとめ(28件)

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IT	ITmedia 総合記事一覧	[ITmedia News] “購買部”に顔認証決済　トヨタら設立の中高一貫校が導入	https://www.itmedia.co.jp/news/articles/2208/25/news082.html	itmedia	2022-08-25 09:30:00
IT	ITmedia 総合記事一覧	[ITmedia News] 無料で先端IT技術学ぶ「42東京」　開校から2年　教育制度に一石	https://www.itmedia.co.jp/news/articles/2208/25/news084.html	itmedia	2022-08-25 09:30:00
IT	ITmedia 総合記事一覧	[ITmedia エグゼクティブ] シリコン量子コンピューターの弱点克服　エラー訂正成功	https://mag.executive.itmedia.co.jp/executive/articles/2208/25/news083.html	itmedia	2022-08-25 09:23:00
TECH	Techable（テッカブル）	車窓に映像投影で「動く会議室」化。名古屋市で自動運転車の実証実験開始	https://techable.jp/archives/184678	名古屋市	2022-08-25 00:00:37
AWS	AWS Partner Network (APN) Blog	Simplified Help Desk and Endpoint Management with Track-It! on AWS	https://aws.amazon.com/blogs/apn/simplified-help-desk-and-endpoint-management-with-track-it-on-aws/	Simplified Help Desk and Endpoint Management with Track It on AWSThe Track It help desk and endpoint management system helps an organization track all IT tasks and end user issues and requests in one place The new AWS Quick Start for Track It help desk software by BMC Software solves this problem by simplifying the setup configuration and ongoing management of the system It provides users an easy to implement secure globally accessible help desk and endpoint management system in a fraction of the time and cost of doing it yourself	2022-08-25 00:07:18
AWS	AWS	Amazon Braket Service Dashboard Walkthrough | Amazon Web Services	https://www.youtube.com/watch?v=D8uRXePPip0	Amazon Braket Service Dashboard Walkthrough Amazon Web ServicesJoin us as we walk you through the new and improved Amazon Braket Service Dashboard You can now view your running notebooks jobs favorite quantum devices and even reach out to our experts all from a single page Amazon Braket is a fully managed quantum computing service that helps academics and enterprises accelerate research into quantum computing and simplifies quantum software development Amazon Braket provides access to different types of quantum computers including trapped ion machines superconducting qubit systems photonic quantum computers and quantum annealers as well as quantum circuit simulators and development tools Learn more 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 AmazonBraketWebinar AmazonBraketTutorial Braket QuantumComputing AmazonBraket QuantumTechnologies AWS AmazonWebServices CloudComputing	2022-08-25 00:04:45
デザイン	コリス	レスポンシブの実装が今までと変わる！ CSSの新機能コンテナクエリと:has()疑似クラス、最初に理解しておきたい基礎知識を解説	https://coliss.com/articles/build-websites/operation/css/container-and-has-in-chrome105.html	続きを読む	2022-08-25 00:36:00
python	Pythonタグが付けられた新着投稿 - Qiita	FastAPI と SQL Databases(SQLAlchemy)	https://qiita.com/sand/items/461b3f68060952fc7415	fastapi	2022-08-25 09:22:47
python	Pythonタグが付けられた新着投稿 - Qiita	bokeh: ColumnDataSourceは複数のドキュメントで使用できない	https://qiita.com/yuji38kwmt/items/3c8c6424e1166180ce05	runti	2022-08-25 09:15:37
js	JavaScriptタグが付けられた新着投稿 - Qiita	React Query(v4)使ってみたので、使い方をまとめてみた	https://qiita.com/rowaxl/items/2d6024bd1bd5d723daa2	devtool	2022-08-25 09:39:18
AWS	AWSタグが付けられた新着投稿 - Qiita	Amazon Sagemaker Studio Labを試してみる	https://qiita.com/t_tsuchida/items/3982335903a856ad26b1	amazonsagemaker	2022-08-25 09:17:36
Ruby	Railsタグが付けられた新着投稿 - Qiita	【Rails】DBの一意性について【備忘録】	https://qiita.com/taku3ukat/items/8ca6b25dae26ec706c3a	urlsecu	2022-08-25 09:35:59
技術ブログ	Developers.IO	CEDEC2022 セッションレポート チート行為とオンラインゲームセキュリティ #CEDEC2022 #classmethod_game	https://dev.classmethod.jp/articles/cedec2022-cheat-and-onlinegamesecurity/	cedec	2022-08-25 00:49:17
海外TECH	DEV Community	Why your website should be under 14kb in size	https://dev.to/shadowfaxrodeo/why-your-website-should-be-under-14kb-in-size-398n	Why your website should be under kb in sizeHaving a smaller website makes it load faster ーthat s not surprising What is surprising is that a kb page can load much faster than a kb page ーmaybe ms faster ー while the difference between a kb and a kb page is trivial This is because of the TCP slow start algorithm This article will cover what that is how it works and why you should care But first we ll quickly go over some of the basics What is TCP Transmission Control Protocol TCP is a way of using the Internet Protocol IP to send packets of data reliably ーsometimes this is referred to as TCP IP When a browser requests your website or an image or a stylesheet it makes that request using HTTP HTTP is built on top of TCP and a single HTTP request is usually made up of many TCP packets On its own IP is just a system for sending packets of data from one location on the internet to another IP doesn t have a way of checking if a packet has successfully arrived at its destination When it comes to websites knowing that all the data has arrived is important ー otherwise we could end up with missing chunks of web page There are other used of the web where this doesn t matter so much ー like streaming live video TCP is an extension of IP that allows a browser and your website s server to tell each other which packets have successfully arrived The server sends some packets then waits for a response from the browser saying it has received the packets this is called an acknowledgement or ACK then it sends some more ーor if it hasn t received an ACK it can send the packets again What is TCP slow start TCP slow start is an algorithm used by servers to find out how many packets it can send at a time When a browser first makes a connection to your server ーthe server has no way of knowing the amount of bandwidth between them Bandwidth is how much data can be transmitted over a network per unit of time Usually it s measured in bits per second b s Plumbing is a common analogy ーthink of bandwidth as how much water can come out of a pipe per second Your server doesn t know how much data the connection can handle ー so it starts by sending you a small and safe amount of data ー usually TCP packets If those packets successfully reach your site s visitor their computer sends back an acknowledgement ACK saying the packets have been received Your server then sends more data back but this time it doubles the amount of packets This process is repeated until packets are lost and your server doesn t receive an ACK At which point the server continues to send packets but at a slower rate That s the gist of TCP slow start ー in real life the algorithm varies but that s essentially how it works So where does kb come from Most web servers TCP slow start algorithm starts by sending TCP packets The maximum size of a TCP packet is bytes This this maximum is not set by the TCP specification it comes from the ethernet standardEach TCP packet uses bytes in its header ー bytes for IP and an additional bytes for TCPThat leaves bytes per TCP packet x bytes or roughly kb So if you can fit your website ー or the critical parts of it ー into kb you can save visitors a lot of time ーthe time it takes for one round trip between them and your website s server How bad can one round trip be People are very impatient ーand one round trip can be surprisingly long How long depends on latency…Latency is the time it takes a packet of data to travel from one it s source to it s destination If bandwidth is how much water can go through a pipe per second ー latency is the time it takes a droplet of water to enter the pipe and then exit the other end Here s a fun example of how bad latency can be Satelite internetSatellite internet is provided by a satellite in orbit around the earth It s used by people in very unpopulated areas on oil rigs cruise ships and for inflight WiFi on airlines To illustrate this example of bad latency let s imagine a bunch of oil rig bros have forgotten their dice at home and need to use the excellent missingdice comto play Dungeons amp Dragons First one of them uses their phone to make a request for the web page…The phone sends that request to the rig s WiFi router ーwhich sends that data to the on rig satellite dish ー lets be nice and say that takes ms The satellite dish then has to send that data to the satellite in orbit above the earth Typically this is achieved using a satellite in geostationary orbit at km above the earths surface The speed of light travels at m s so a message sent from earth to the satellite takes ms The satellite then sends the message back to a ground station which takes another ms Then the ground station has to send the request to wherever the server is on earth light slows down to m s when it s in a fibre optic cable If the distance between the ground station and the server is the same as the distance between New York and London it ll take about ms ー but if it s more like the distance between New York and Sydney it ll take ms ー so we ll call it ms a convenient number for our math Then the request needs to be processed by the server which could take maybe ms then the server sends it back again Back to the ground station up into space back down to the satellite dish then to the wifi router and back again to our oilers phone phone gt WiFi router gt satellite dish gt satellite gt ground station gt server gt ground Station gt satellite gt satellite dish gt WiFi router gt phoneIf we do the math that s x ms That s an extra ms every round trip ー perhaps that doesn t seem like a long time to wait but your website could easily have many round trips just to fetch it s first resource Also HTTPS requires two additional round trips before it can do the first one ーwhich gets us up to ms What about latency for people who live on dry land Satellite internet might seem like a deliberately bad example ー I chose it because it illustrates the point and is weird ーbut for landlubbers latency can get worse than that for lots of reasons g mobile typically has latency between ms and msg networks can have anywhere between ms and ms latencyNoisy mobile networks ー say in an unusually crowded place like a music festival Servers dealing with high amounts of trafficBad stuffSpotty connections can also cause packets to be lost ー resulting in another round trip to get the lost packets Now that you know about the kb rule what can you do Of course you should make your website as small as possible ーyou love your visitors and you want them to be happy Aiming for each page to fit in under kb is good target That kb includes compression ー so it could actually be more like kb of uncompressed data ー which is generous Consider that the Apollo guidance computers only had kb of memory Once you lose the autoplaying videos the popups the cookies the cookie consent banners the social network buttons the tracking scripts javascript and css frameworks and all the other junk nobody likes ーyou re probably there But assuming you ve tried your very best to fit everything into kb and can t ーthe kb rule is still useful If you Make sure the first kb of data you send to your visitors can be used to render something useful ー for instance some critical CSS JS and the first few paragraphs of text explaining how to use your app Some caveats to the ruleThe kb rule is more like a rule of thumb than a fundamental law of computing Some servers have increased the TCP slow start initial window to packets instead of Sometimes the server knows it can start with a larger number of packets because it s used the TLS handshake to establish a larger window can be used Servers can cache how many packets a route can manage and send more next time it connects There s other caveats too ー here s a more in depth article about why the kb rule isn t always the case HTTP and the kb ruleThere is an idea that the kb rule no longer holds true when using HTTP I ve read all I can about this without boring myself to death ー but I haven t seen any evidence that servers using HTTP have stopped using TCP slow start beginning with packets Further readingMuch of the content of this post comes from the following resources High performance browser networking by Ilya GrigorikIncrease HTTP Performance by Fitting In the Initial TCP Slow Start Window by Simon Hørup EskildsenCritical Resources and the First KB A Review	2022-08-25 00:22:39
海外TECH	DEV Community	7 Software Development Methodologies	https://dev.to/makendrang/7-software-development-methodologies-5fc5	Software Development Methodologies What is software development methodology To understand the types of development models that exist it is important to first learn the basics of project development Software development methodology refers to the SDLC Software Development Life Cycle development model which focuses on organizing profitable yet efficient project development processes from ideation and planning to develop test and launch software In other words it is called application development life cycle which adopts different formats approaches and techniques and helps Efficiently organize work processes Eliminate project development time Reduce the cost required for software development Follow the creative process Provides a set of standards for effective communication Improve final product quality and more Types of software development methodsAs you know there are different types of software development methodologies aimed at improving SDLC However after reviewing them you may discover that there is no absolute winner for each particular case the strategy will be different depending on project characteristics requirements goals key essential features etc Therefore a detailed comparison of software development methods can simplify the choice and help you determine the best winner for each individual application development project Agile Software Development MethodologyThe main focus of this methodology is on the project product itself It therefore presupposes various ongoing modifications based on user and customer feedback as well as internal changes related to the work of engineers On the one hand Agile software development methodology has no rigid framework On the other hand the software development process is divided into short time cells thus delivering real results and really quick profits Main advantageProblems are discovered and resolved at an early stage Plans are more flexible and adapt more easily to different project changes Eliminate time from project delivery Improve communication with customers and their close involvement at every stage of the software development process High quality of the final product Mainly suitable for small and young companies more flexible and open to active communication Possible disadvantagesLack of understanding of solution specifics prior to implementation High risk of ignoring project documents and requirements Insufficient predictability in terms of budgets marketing plans sales etc Request immediate feedback for problems and real time feedback Easy to get lost in the details and get in the way of the project Waterfall Development MethodologyThis methodology is rigorous and linear A new step can only be started if the previous step has already been completed In other words each stage gradually flows into the next Also there is no going back to the previous step This approach is easy to understand because it presupposes a strict sequence of tasks to be performed Waterfall software development methodology is often considered a classic representation of software development Main advantageAll processes are easy to understand Increased discipline and better respect for deadlines All phases of test cases are planned in advance No financial risk thanks to high precision in planning The results are very predictable as they meet all the requirements and criteria outlined in the project documentation so companies get exactly what they want to grow Possible disadvantagesThe planning phase can be too difficult to organize the whole process Low flexibility and inability to make changes once software development has begun Immediate changes to the project can result in additional costs that are often very high Longer delivery time Low for long or ongoing projects Extreme programming methodsA perfect approach for unstable projects as it involves the client as much as possible In addition it requires high flexibility The extreme programming approach is said to improve the quality of the software due to its ability to adapt to dynamically changing needs Above all constant feedback and communication are key to creating a productive and happy team environment Main advantageStrong customer engagement leads to high quality products Stable end product through continuous software testing Pair programming eliminates possible errors during software development High degree of flexibility and ability to make changes immediately The code remains clear and complete Don t rush to meet deadlines developers work at their own pace Possible disadvantagesEffectiveness depends a lot on the people involved Ambiguous and unknown future results The customer must always be involved in the software development process Relatively long and expensive investments Too difficult for small groups as they may not have all the necessary skills and knowledge Lean developmentValue for the customer is the essential central element that the entire approach revolves around If something is worth doing it should be done immediately otherwise it must be removed Lean software development methodology focuses heavily on loss reduction This is why the whole project is thoroughly checked first to avoid losing time or money Since value is central feedback itself plays an important role so that actions are taken quickly Main advantagePerfect for a low budget and time constrained project The team focuses on assigning tasks as required Delivers rapid delivery by eliminating waste and unnecessary processes Easily extensible great for large projects unlike most other software development methods Eliminate tasks allowing more time for core processes and implementation of high value features in the final product Improved teamwork allows to focus on meaningful and impactful work with a greater sense of purpose Possible disadvantagesSuccess depends a lot on the ability of a team to work Low experience and lack of expertise may not work if the team works independently Cutting too much can lead to a loss of focus on the project Risk of delays due to certain bottlenecks or low levels of resources Requires excellent documentation to ensure all aspects are developed correctly Dynamic system development methodologyThe feature is considered a kind of user feedback Planning design and construction are all feature based This approach involves iterating to improve functionality and deal with different complexity Feature driven development aims to organize the work of a large number of teams in a large organization Main advantageMainly suitable for large scale long term and ongoing projects Provide a detailed understanding of the project scope key objectives and context Breaking feature sets into smaller pieces and releasing iteratively frequently reducing the risk of bugs and allowing delivery of specific features in a shorter timeframe Use predefined standards to simplify the development process Allows any developer with the right experience and expertise to handle the jobs Based on a user centered approach where results depend on user opinions Possible disadvantagesNot applicable for small organizations and for small projects Requires some experienced developers to monitor the process Difficult to ensure strict deadlines No written documentation is provided to customers only communication between developers during the project release cycle Focus more on individual code ownership than on shared group model Scrum developmentEasy to understand and effective when it comes to results The course of work is divided into sprints All assignments for each sprint are predefined and then discussed after this period With this approach it is easy to get an early response to problems that arise and therefore to address them immediately The Scrum software development methodology is by far the most flexible For this reason it easily handles projects with changing requirements Main advantageAll steps and processes are clear and transparent Lighting control goes hand in hand with constant updates to keep the team on their toes Deleting project errors and problems just got a whole lot easier Get high customer engagement Allows for regular progress updates provided at regular meetings Customers can track different project processes and measure development performance Possible disadvantagesThe costs and time involved can often be uncertain No delay in product delivery Large projects cannot be managed with this approach Only seasoned professionals who regularly complete quests can participate no beginner needed The testing team has to perform regression testing after every sprint which is one of the most notable difficulties of this approach Rapid App DevelopmentIt is clear from the name that the main goal of this method is to achieve quick results To do this it relies on other development methodologies It focuses on rapid prototype releases and iterations As a result quick feedback is received errors are eliminated and the desired results are achieved The more flexible and adaptable it is the better The main goal is to tune the software so that it is designed and operated efficiently and quickly Rapid application development methodology consists of phases rapid analysis and design prototyping cycle testing and implementation Main advantageCustomers are encouraged to rate quickly and continuously provide feedback for improvement Allows you to easily change key functions while the software is in beta Minimize risk from the early stages of development Reduce development time by setting project completion deadlines Focus primarily on solving business problems that matter to the end user Adopting the use of automated tools makes prototyping much easier and faster Possible disadvantagesNot suitable for small projects Requires highly specialized developers and strong cross team collaboration The steps are not strictly defined affecting the overall structure of the project Relatively high development costs All requirements must be defined before starting the development processGratitude for perusing my article till end I hope you realized something unique today If you enjoyed this article then please share to your buddies and if you have suggestions or thoughts to share with me then please write in the comment box	2022-08-25 00:06:14
海外TECH	CodeProject Latest Articles	Implementing IDumpable Interface in C#	https://www.codeproject.com/Tips/5340437/Implementing-IDumpable-Interface-in-Csharp	interface	2022-08-25 00:47:00
ニュース	BBC News - Home	GCSE results: Grades set to drop after return to exams	https://www.bbc.co.uk/news/education-62498631?at_medium=RSS&at_campaign=KARANGA	covid	2022-08-25 00:01:08
ニュース	BBC News - Home	Why India made a U-turn on free trade deals	https://www.bbc.co.uk/news/world-asia-india-62559040?at_medium=RSS&at_campaign=KARANGA	businesses	2022-08-25 00:02:33
ニュース	BBC News - Home	Turkey's Bayraktar TB2 drone: Why African states are buying them	https://www.bbc.co.uk/news/world-africa-62485325?at_medium=RSS&at_campaign=KARANGA	buying	2022-08-25 00:18:50
北海道	北海道新聞	三笘先発、ブライトン勝つ　リーグ杯　３回戦はアーセナル	https://www.hokkaido-np.co.jp/article/721714/	英国	2022-08-25 09:15:00
北海道	北海道新聞	日本のコロナ感染、５週連続で世界最多　死者は２番目	https://www.hokkaido-np.co.jp/article/721709/	世界保健機関	2022-08-25 09:13:00
北海道	北海道新聞	【道スポ】北海　夏の雪辱だ　秋季全道高校野球　札幌支部組み合わせ決定	https://www.hokkaido-np.co.jp/article/721708/	組み合わせ	2022-08-25 09:07:00
ビジネス	プレジデントオンライン	新入社員がどんどん辞めていく会社の｢残念な上司｣たちに共通する"ある口癖"【2022上半期BEST5】 - ｢価値観｣の押し付けが､社員のやる気を低下させる	https://president.jp/articles/-/60880	新入社員	2022-08-25 10:00:00
ビジネス	プレジデントオンライン	急成長の理由は｢価格破壊｣だけではない…この10年で格安航空会社がグッと身近になった本当の理由 - ｢羽田に飛ばないと儲からない｣というジレンマ	https://president.jp/articles/-/60783	価格破壊	2022-08-25 10:00:00
ビジネス	プレジデントオンライン	3円を稼ぐために10キロ先までリヤカーを引く…脱北YouTuberが振り返る"リアル北朝鮮"の極貧生活 - 数カ月働いても50円の金正日モデルのズボンすら買えなかった	https://president.jp/articles/-/60035	youtuber	2022-08-25 10:00:00
マーケティング	MarkeZine	コンテクスチュアル広告にみるターゲティングのこれから	http://markezine.jp/article/detail/39724	コンテクスチュアル広告にみるターゲティングのこれからネット広告のターゲティング精度が高まっていく一方、受け手であるユーザーからは「渡したはずのない情報が知られている」「追いかけられているようで気持ちが悪い」という声が挙がるようになった。	2022-08-25 09:30:00
マーケティング	AdverTimes	地域企業の持続的成長に欠かせない『「なりわい」革新』とは	https://www.advertimes.com/20220825/article393467/	組織文化	2022-08-25 01:00:31
マーケティング	AdverTimes	女優デビューの原点は、山手線車内でのスカウトにあった？！（ゲスト：岸井ゆきの）【後編】	https://www.advertimes.com/20220825/article393168/	土曜ドラマ	2022-08-25 00:30:47