与本网页相关的一些笔记

与本网页相关的一些笔记添加markdown之前，在文档头加入： --- title: "Markdown from A to Z" tags: - user manual - markdown - writing format date: "2023-09-05" thumbnail: "/assets/img/thumbnail/sample.png" bookmark: true --- 务必去除markdown文档中所有的 {{ 和 }} ！！！否则build直接报错。建立新页面组时，需要在该目录下添加index.md。其内容如下即可： --- ---

随记 · 2025-06-25

最优控制基础 - 课程笔记

Notes · 2025-06-25

最优控制基础-复习例题

Notes · 2025-06-25

Publishing your blog post

None · 2024-02-04

Manage blog comments with Giscus

Giscus is a free comments system powered without your own database. Giscus uses the Github Discussions to store and load associated comments based on a chosen mapping (URL, pathname, title, etc.). To comment, visitors must authorize the giscus app to post on their behalf using the GitHub OAuth flow. Alternatively, visitors can comment on the GitHub Discussion directly. You can moderate the comments on GitHub. Prerequisites Create a github repo You need a GitHub repository first. If you gonna use GitHub Pages for hosting your website, you can choose the corresponding repository (i.e., [userID].github.io) The repository should be public, otherwise visitors will not be able to view the discussion. Turn on Discussion feature In your GitHub repository Settings, make sure that General > Features > Discussions feature is enabled. Activate Giscus API Follow the steps in Configuration guide. Make sure the verification of your repository is successful. Then, scroll down from the manual page and choose the Discussion Category options. You don’t need to touch other configs. Copy _config.yml Now, you get the giscus script. Copy the four properties marked with a red box as shown below: Paste those values to _config.yml placed in the root directory. # External API giscus_repo: "[ENTER REPO HERE]" giscus_repoId: "[ENTER REPO ID HERE]" giscus_category: "[ENTER CATEGORY NAME HERE]" giscus_categoryId: "[ENTER CATEGORY ID HERE]"

None · 2024-02-03

Activate Goat Counter to know how many users visit your blog or posts

GoatCounter is an open source web analytics platform available as a free donation-supported hosted service or self-hosted app. It aims to offer easy to use and meaningful privacy-friendly web analytics as an alternative to Google Analytics or Matomo (in official guide). Getting started Sign up & Get your access code Create new account in here You will access your blog statistics at https://[my-code].goatcounter.com. Add your code to _config.yml goatcounter_code: [my-code] Check if your adblocker is blocking GoatCounter if you don’t see any pageviews. Allow visitor counter Sign in Goat counter from your browser, and enter the Settings tab. Make sure Allow adding visitor counts on your website is checked:

None · 2024-02-02

Classic Literature #2: Don Quixote

About the book Author: Miguel de Cervantes Original title: El ingenioso hidalgo don Quixote de la Mancha Country: Spain Genre: Novel Publication date: 1605 (Part One) 1615 (Part Two) Chapter I. In a village of La Mancha, the name of which I have no desire to call to mind, there lived not long since one of those gentlemen that keep a lance in the lance-rack, an old buckler, a lean hack, and a greyhound for coursing. An olla of rather more beef than mutton, a salad on most nights, scraps on Saturdays, lentils on Fridays, and a pigeon or so extra on Sundays, made away with three-quarters of his income. The rest of it went in a doublet of fine cloth and velvet breeches and shoes to match for holidays, while on week-days he made a brave figure in his best homespun. He had in his house a housekeeper past forty, a niece under twenty, and a lad for the field and market-place, who used to saddle the hack as well as handle the bill-hook. The age of this gentleman of ours was bordering on fifty; he was of a hardy habit, spare, gaunt-featured, a very early riser and a great sportsman. They will have it his surname was Quixada or Quesada (for here there is some difference of opinion among the authors who write on the subject), although from reasonable conjectures it seems plain that he was called Quexana. This, however, is of but little importance to our tale; it will be enough not to stray a hair’s breadth from the truth in the telling of it. You must know, then, that the above-named gentleman whenever he was at leisure (which was mostly all the year round) gave himself up to reading books of chivalry with such ardour and avidity that he almost entirely neglected the pursuit of his field-sports, and even the management of his property; and to such a pitch did his eagerness and infatuation go that he sold many an acre of tillageland to buy books of chivalry to read, and brought home as many of them as he could get. But of all there were none he liked so well as those of the famous Feliciano de Silva’s composition, for their lucidity of style and complicated conceits were as pearls in his sight, particularly when in his reading he came upon courtships and cartels, where he often found passages like “the reason of the unreason with which my reason is afflicted so weakens my reason that with reason I murmur at your beauty;” or again, “the high heavens, that of your divinity divinely fortify you with the stars, render you deserving of the desert your greatness deserves.” Over conceits of this sort the poor gentleman lost his wits, and used to lie awake striving to understand them and worm the meaning out of them; what Aristotle himself could not have made out or extracted had he come to life again for that special purpose. He was not at all easy about the wounds which Don Belianis gave and took, because it seemed to him that, great as were the surgeons who had cured him, he must have had his face and body covered all over with seams and scars. He commended, however, the author’s way of ending his book with the promise of that interminable adventure, and many a time was he tempted to take up his pen and finish it properly as is there proposed, which no doubt he would have done, and made a successful piece of work of it too, had not greater and more absorbing thoughts prevented him. Many an argument did he have with the curate of his village (a learned man, and a graduate of Siguenza) as to which had been the better knight, Palmerin of England or Amadis of Gaul. Master Nicholas, the village barber, however, used to say that neither of them came up to the Knight of Phoebus, and that if there was any that could compare with him it was Don Galaor, the brother of Amadis of Gaul, because he had a spirit that was equal to every occasion, and was no finikin knight, nor lachrymose like his brother, while in the matter of valour he was not a whit behind him. In short, he became so absorbed in his books that he spent his nights from sunset to sunrise, and his days from dawn to dark, poring over them; and what with little sleep and much reading his brains got so dry that he lost his wits. His fancy grew full of what he used to read about in his books, enchantments, quarrels, battles, challenges, wounds, wooings, loves, agonies, and all sorts of impossible nonsense; and it so possessed his mind that the whole fabric of invention and fancy he read of was true, that to him no history in the world had more reality in it. He used to say the Cid Ruy Diaz was a very good knight, but that he was not to be compared with the Knight of the Burning Sword who with one back-stroke cut in half two fierce and monstrous giants. He thought more of Bernardo del Carpio because at Roncesvalles he slew Roland in spite of enchantments, availing himself of the artifice of Hercules when he strangled Antaeus the son of Terra in his arms. He approved highly of the giant Morgante, because, although of the giant breed which is always arrogant and ill-conditioned, he alone was affable and well-bred. But above all he admired Reinaldos of Montalban, especially when he saw him sallying forth from his castle and robbing everyone he met, and when beyond the seas he stole that image of Mahomet which, as his history says, was entirely of gold. To have a bout of kicking at that traitor of a Ganelon he would have given his housekeeper, and his niece into the bargain. In short, his wits being quite gone, he hit upon the strangest notion that ever madman in this world hit upon, and that was that he fancied it was right and requisite, as well for the support of his own honour as for the service of his country, that he should make a knight-errant of himself, roaming the world over in full armour and on horseback in quest of adventures, and putting in practice himself all that he had read of as being the usual practices of knights-errant; righting every kind of wrong, and exposing himself to peril and danger from which, in the issue, he was to reap eternal renown and fame. Already the poor man saw himself crowned by the might of his arm Emperor of Trebizond at least; and so, led away by the intense enjoyment he found in these pleasant fancies, he set himself forthwith to put his scheme into execution. The first thing he did was to clean up some armour that had belonged to his great-grandfather, and had been for ages lying forgotten in a corner eaten with rust and covered with mildew. He scoured and polished it as best he could, but he perceived one great defect in it, that it had no closed helmet, nothing but a simple morion. This deficiency, however, his ingenuity supplied, for he contrived a kind of half-helmet of pasteboard which, fitted on to the morion, looked like a whole one. It is true that, in order to see if it was strong and fit to stand a cut, he drew his sword and gave it a couple of slashes, the first of which undid in an instant what had taken him a week to do. The ease with which he had knocked it to pieces disconcerted him somewhat, and to guard against that danger he set to work again, fixing bars of iron on the inside until he was satisfied with its strength; and then, not caring to try any more experiments with it, he passed it and adopted it as a helmet of the most perfect construction. He next proceeded to inspect his hack, which, with more quartos than a real and more blemishes than the steed of Gonela, that “tantum pellis et ossa fuit,” surpassed in his eyes the Bucephalus of Alexander or the Babieca of the Cid. Four days were spent in thinking what name to give him, because (as he said to himself) it was not right that a horse belonging to a knight so famous, and one with such merits of his own, should be without some distinctive name, and he strove to adapt it so as to indicate what he had been before belonging to a knight-errant, and what he then was; for it was only reasonable that, his master taking a new character, he should take a new name, and that it should be a distinguished and full-sounding one, befitting the new order and calling he was about to follow. And so, after having composed, struck out, rejected, added to, unmade, and remade a multitude of names out of his memory and fancy, he decided upon calling him Rocinante, a name, to his thinking, lofty, sonorous, and significant of his condition as a hack before he became what he now was, the first and foremost of all the hacks in the world. Having got a name for his horse so much to his taste, he was anxious to get one for himself, and he was eight days more pondering over this point, till at last he made up his mind to call himself “Don Quixote,” whence, as has been already said, the authors of this veracious history have inferred that his name must have been beyond a doubt Quixada, and not Quesada as others would have it. Recollecting, however, that the valiant Amadis was not content to call himself curtly Amadis and nothing more, but added the name of his kingdom and country to make it famous, and called himself Amadis of Gaul, he, like a good knight, resolved to add on the name of his, and to style himself Don Quixote of La Mancha, whereby, he considered, he described accurately his origin and country, and did honour to it in taking his surname from it. So then, his armour being furbished, his morion turned into a helmet, his hack christened, and he himself confirmed, he came to the conclusion that nothing more was needed now but to look out for a lady to be in love with; for a knight-errant without love was like a tree without leaves or fruit, or a body without a soul. As he said to himself, “If, for my sins, or by my good fortune, I come across some giant hereabouts, a common occurrence with knights-errant, and overthrow him in one onslaught, or cleave him asunder to the waist, or, in short, vanquish and subdue him, will it not be well to have some one I may send him to as a present, that he may come in and fall on his knees before my sweet lady, and in a humble, submissive voice say, ‘I am the giant Caraculiambro, lord of the island of Malindrania, vanquished in single combat by the never sufficiently extolled knight Don Quixote of La Mancha, who has commanded me to present myself before your Grace, that your Highness dispose of me at your pleasure’?” Oh, how our good gentleman enjoyed the delivery of this speech, especially when he had thought of some one to call his Lady! There was, so the story goes, in a village near his own a very good-looking farm-girl with whom he had been at one time in love, though, so far as is known, she never knew it nor gave a thought to the matter. Her name was Aldonza Lorenzo, and upon her he thought fit to confer the title of Lady of his Thoughts; and after some search for a name which should not be out of harmony with her own, and should suggest and indicate that of a princess and great lady, he decided upon calling her Dulcinea del Tobosoâ€”she being of El Tobosoâ€”a name, to his mind, musical, uncommon, and significant, like all those he had already bestowed upon himself and the things belonging to him.

Category B · 2023-12-05

Classic Literature #1: Romeo and Juliet

About the book Author: William Shakespeare Country: England Genre: Shakespearean tragedy Publication date: 1597 Synopsis The prologue of Romeo and Juliet calls the title characters “star-crossed lovers”—and the stars do seem to conspire against these young lovers. Romeo is a Montague, and Juliet a Capulet. Their families are enmeshed in a feud, but the moment they meet—when Romeo and his friends attend a party at Juliet’s house in disguise—the two fall in love and quickly decide that they want to be married. A friar secretly marries them, hoping to end the feud. Romeo and his companions almost immediately encounter Juliet’s cousin Tybalt, who challenges Romeo. When Romeo refuses to fight, Romeo’s friend Mercutio accepts the challenge and is killed. Romeo then kills Tybalt and is banished. He spends that night with Juliet and then leaves for Mantua. Juliet’s father forces her into a marriage with Count Paris. To avoid this marriage, Juliet takes a potion, given her by the friar, that makes her appear dead. The friar will send Romeo word to be at her family tomb when she awakes. The plan goes awry, and Romeo learns instead that she is dead. In the tomb, Romeo kills himself. Juliet wakes, sees his body, and commits suicide. Their deaths appear finally to end the feud.

Category B · 2023-12-04

My personal Online Library

What is Lorem Ipsum? This is an example post ‘<’. Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry’s standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum. Why do we use it? It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout. The point of using Lorem Ipsum is that it has a more-or-less normal distribution of letters, as opposed to using ‘Content here, content here’, making it look like readable English. Many desktop publishing packages and web page editors now use Lorem Ipsum as their default model text, and a search for ‘lorem ipsum’ will uncover many web sites still in their infancy. Various versions have evolved over the years, sometimes by accident, sometimes on purpose (injected humour and the like). Where does it come from? Contrary to popular belief, Lorem Ipsum is not simply random text. It has roots in a piece of classical Latin literature from 45 BC, making it over 2000 years old. Richard McClintock, a Latin professor at Hampden-Sydney College in Virginia, looked up one of the more obscure Latin words, consectetur, from a Lorem Ipsum passage, and going through the cites of the word in classical literature, discovered the undoubtable source. Lorem Ipsum comes from sections 1.10.32 and 1.10.33 of “de Finibus Bonorum et Malorum” (The Extremes of Good and Evil) by Cicero, written in 45 BC. This book is a treatise on the theory of ethics, very popular during the Renaissance. The first line of Lorem Ipsum, “Lorem ipsum dolor sit amet..”, comes from a line in section 1.10.32. The standard chunk of Lorem Ipsum used since the 1500s is reproduced below for those interested. Sections 1.10.32 and 1.10.33 from “de Finibus Bonorum et Malorum” by Cicero are also reproduced in their exact original form, accompanied by English versions from the 1914 translation by H. Rackham. Where can I get some? There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don’t look even slightly believable. If you are going to use a passage of Lorem Ipsum, you need to be sure there isn’t anything embarrassing hidden in the middle of text. All the Lorem Ipsum generators on the Internet tend to repeat predefined chunks as necessary, making this the first true generator on the Internet. It uses a dictionary of over 200 Latin words, combined with a handful of model sentence structures, to generate Lorem Ipsum which looks reasonable. The generated Lorem Ipsum is therefore always free from repetition, injected humour, or non-characteristic words etc.

Category B · 2023-12-03

Example Post: thumbnail exists

Follow the guidance Fill the image path to the ‘thumbnail’ attribute, if you want a main image to be displayed on the post header image. --- title: "Example Post: thumbnail exists" date: "2023-12-02" thumbnail: "/assets/img/thumbnail/bricks.webp" --- The rest content is just meaningless dummy text. Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

Category A · 2023-12-02

Example Post: no thumbnail image

Follow the guidance Fill the image path to the ‘thumbnail’ attribute, if you want a main image to be displayed on the post header image. --- title: "Example Post: thumbnail exists" date: "2023-12-02" thumbnail: "/assets/img/thumbnail/bricks.webp" --- The rest content is just meaningless dummy text. Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

Category A · 2023-12-01

Markdown from A to Z

Headings To create a heading, add number signs (#) in front of a word or phrase. The number of number signs you use should correspond to the heading level. For example, to create a heading level three (<h3>), use three number signs (e.g., ### My Header). Markdown HTML Rendered Output # Header 1 <h1>Header 1</h1> Header 1 ## Header 2 <h2>Header 2</h2> Header 2 ### Header 3 <h3>Header 3</h3> Header 3 Emphasis You can add emphasis by making text bold or italic. Bold To bold text, add two asterisks (e.g., **text** = text) or underscores before and after a word or phrase. To bold the middle of a word for emphasis, add two asterisks without spaces around the letters. Italic To italicize text, add one asterisk (e.g., *text* = text) or underscore before and after a word or phrase. To italicize the middle of a word for emphasis, add one asterisk without spaces around the letters. Blockquotes To create a blockquote, add a > in front of a paragraph. > Yongha Kim is the best developer in the world. > > Factos 👍👀 Yongha Kim is the best developer in the world. Factos 👍👀 Lists You can organize items into ordered and unordered lists. Ordered Lists To create an ordered list, add line items with numbers followed by periods. The numbers don’t have to be in numerical order, but the list should start with the number one. 1. First item 2. Second item 3. Third item 4. Fourth item First item Second item Third item Fourth item Unordered Lists To create an unordered list, add dashes (-), asterisks (*), or plus signs (+) in front of line items. Indent one or more items to create a nested list. * First item * Second item * Third item * Fourth item First item Second item Third item Fourth item Code To denote a word or phrase as code, enclose it in backticks (`). Markdown HTML Rendered Output At the command prompt, type `nano`. At the command prompt, type <code>nano</code>. At the command prompt, type nano. Escaping Backticks If the word or phrase you want to denote as code includes one or more backticks, you can escape it by enclosing the word or phrase in double backticks (``). Markdown HTML Rendered Output ``Use `code` in your Markdown file.`` <code>Use `code` in your Markdown file.</code> Use `code` in your Markdown file. Code Blocks To create code blocks that spans multiple lines of code, set the text inside three or more backquotes ( ``` ) or tildes ( ~~~ ). <html> <head> </head> </html> def foo(): a = 1 for i in [1,2,3]: a += i Horizontal Rules To create a horizontal rule, use three or more asterisks (***), dashes (---), or underscores (___) on a line by themselves. *** --- _________________ Links To create a link, enclose the link text in brackets (e.g., [Blue Archive]) and then follow it immediately with the URL in parentheses (e.g., (https://bluearchive.nexon.com)). My favorite mobile game is [Blue Archive](https://bluearchive.nexon.com). The rendered output looks like this: My favorite mobile game is Blue Archive. Adding Titles You can optionally add a title for a link. This will appear as a tooltip when the user hovers over the link. To add a title, enclose it in quotation marks after the URL. My favorite mobile game is [Blue Archive](https://bluearchive.nexon.com "All senseis are welcome!"). The rendered output looks like this: My favorite mobile game is Blue Archive. URLs and Email Addresses To quickly turn a URL or email address into a link, enclose it in angle brackets. <https://www.youtube.com/> <fake@example.com> The rendered output looks like this: https://www.youtube.com/ fake@example.com Images To add an image, add an exclamation mark (!), followed by alt text in brackets, and the path or URL to the image asset in parentheses. You can optionally add a title in quotation marks after the path or URL. ![Tropical Paradise](/assets/img/example.jpg "Maldives, in October") The rendered output looks like this: Linking Images To add a link to an image, enclose the Markdown for the image in brackets, and then add the link in parentheses. [![La Mancha](/assets/img/La-Mancha.jpg "La Mancha: Spain, Don Quixote")](https://www.britannica.com/place/La-Mancha) The rendered output looks like this: Escaping Characters To display a literal character that would otherwise be used to format text in a Markdown document, add a backslash (\) in front of the character. \* Without the backslash, this would be a bullet in an unordered list. The rendered output looks like this: * Without the backslash, this would be a bullet in an unordered list. Characters You Can Escape You can use a backslash to escape the following characters. Character Name ` backtick * asterisk _ underscore {} curly braces [] brackets <> angle brackets () parentheses # pound sign + plus sign - minus sign (hyphen) . dot ! exclamation mark | pipe HTML Many Markdown applications allow you to use HTML tags in Markdown-formatted text. This is helpful if you prefer certain HTML tags to Markdown syntax. For example, some people find it easier to use HTML tags for images. Using HTML is also helpful when you need to change the attributes of an element, like specifying the color of text or changing the width of an image. To use HTML, place the tags in the text of your Markdown-formatted file. This **word** is bold. This <span style="font-style: italic;">word</span> is italic. The rendered output looks like this: This word is bold. This word is italic.

None · 2023-09-05

BG2FOU.github.io

Contact

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