Tuesday, March 17, 2020

Corona Virus Stat

https://www.lifesavvy.com/21038/the-best-coronavirus-dashboards-to-stay-abreast-of-pandemic-news/

https://mikkegoes.com/computer-programming-languages-for-beginners/

https://www.blic.rs/vesti/svet/kineski-zvanicnik-saopstio-ohrabrujuce-vesti-japanski-lek-protiv-gripa-deluje-protiv/g20h8mb

https://www.instructables.com/id/Homework-Writing-Machine/

https://tools.ietf.org/html/rfc793 [TCP]


MORE TIPS from Flavio:


today I have a few new tutorials for you!
But first, I want to tell you again where you can find my 11 free ebooks: get them here! JavaScript, React, Node, Vue, Svelte, Next, C, HTML, CSS and more!
A couple weeks ago I published the C Beginner's Handbook (download it now in PDFePub and Mobi)
I also released a massive update to the JavaScript Beginner's Handbook (PDFePub and Mobi)
Now, some big news: I have officially started working on my new training program. I called it The JavaScript Bootcamp and it will be the most complete JavaScript and Frontend Development online training program everCheck out the syllabus (still not final, I'm refining and working on it every day) and enter your email on the page if you're interested.
I will work on the course material for the next few months, so it's still a long time before it's ready, but I want to get the ball rolling and let you know about the plans for the future.
Let's now jump to the new tutorials!
A few days ago I was moving a folder full of projects, and it was well over 8GB. Turned out 6GB were node_modules folders. Here's how I bulk removed them.
Next, some networking tutorials:



https://tools.ietf.org/html/rfc768

[Docs] [txt|pdf] [Tracker]

INTERNET STANDARD

RFC 768                                                        J. Postel
                                                                     ISI
                                                          28 August 1980



                         

User Datagram Protocol

----------------------

Introduction ------------ This User Datagram Protocol (UDP) is defined to make available a datagram mode of packet-switched computer communication in the environment of an interconnected set of computer networks. This protocol assumes that the Internet Protocol (IP) [1] is used as the underlying protocol. This protocol provides a procedure for application programs to send messages to other programs with a minimum of protocol mechanism. The protocol is transaction oriented, and delivery and duplicate protection are not guaranteed. Applications requiring ordered reliable delivery of streams of data should use the Transmission Control Protocol (TCP) [2]. Format ------ 0 7 8 15 16 23 24 31 +--------+--------+--------+--------+ | Source | Destination | | Port | Port | +--------+--------+--------+--------+ | | | | Length | Checksum | +--------+--------+--------+--------+ | | data octets ... +---------------- ... User Datagram Header Format Fields ------ Source Port is an optional field, when meaningful, it indicates the port of the sending process, and may be assumed to be the port to which a reply should be addressed in the absence of any other information. If not used, a value of zero is inserted. Postel [page 1]


                                                             28 Aug 1980
User Datagram Protocol                                           RFC 768
Fields



Destination  Port has a meaning  within  the  context  of  a  particular
internet destination address.

Length  is the length  in octets  of this user datagram  including  this
header  and the data.   (This  means  the minimum value of the length is
eight.)

Checksum is the 16-bit one's complement of the one's complement sum of a
pseudo header of information from the IP header, the UDP header, and the
data,  padded  with zero octets  at the end (if  necessary)  to  make  a
multiple of two octets.

The pseudo  header  conceptually prefixed to the UDP header contains the
source  address,  the destination  address,  the protocol,  and the  UDP
length.   This information gives protection against misrouted datagrams.
This checksum procedure is the same as is used in TCP.

                  0      7 8     15 16    23 24    31
                 +--------+--------+--------+--------+
                 |          source address           |
                 +--------+--------+--------+--------+
                 |        destination address        |
                 +--------+--------+--------+--------+
                 |  zero  |protocol|   UDP length    |
                 +--------+--------+--------+--------+

If the computed  checksum  is zero,  it is transmitted  as all ones (the
equivalent  in one's complement  arithmetic).   An all zero  transmitted
checksum  value means that the transmitter  generated  no checksum  (for
debugging or for higher level protocols that don't care).

User Interface
--------------

A user interface should allow

  the creation of new receive ports,

  receive  operations  on the receive  ports that return the data octets
  and an indication of source port and source address,

  and an operation  that allows  a datagram  to be sent,  specifying the
  data, source and destination ports and addresses to be sent.






[page 2]                                                          Postel


28 Aug 1980

RFC 768 User Datagram Protocol IP Interface IP Interface ------------- The UDP module must be able to determine the source and destination internet addresses and the protocol field from the internet header. One possible UDP/IP interface would return the whole internet datagram including all of the internet header in response to a receive operation. Such an interface would also allow the UDP to pass a full internet datagram complete with header to the IP to send. The IP would verify certain fields for consistency and compute the internet header checksum. Protocol Application -------------------- The major uses of this protocol is the Internet Name Server [3], and the Trivial File Transfer [4]. Protocol Number --------------- This is protocol 17 (21 octal) when used in the Internet Protocol. Other protocol numbers are listed in [5]. References ---------- [1] Postel, J., "Internet Protocol," RFC 760, USC/Information Sciences Institute, January 1980. [2] Postel, J., "Transmission Control Protocol," RFC 761, USC/Information Sciences Institute, January 1980. [3] Postel, J., "Internet Name Server," USC/Information Sciences Institute, IEN 116, August 1979. [4] Sollins, K., "The TFTP Protocol," Massachusetts Institute of Technology, IEN 133, January 1980. [5] Postel, J., "Assigned Numbers," USC/Information Sciences Institute, RFC 762, January 1980. Postel [page 3]

Html markup produced by rfcmarkup 1.129d, available from https://tools.ietf.org/tools/rfcmarkup/

Tuesday, March 10, 2020

First help


1) in search desktop field type "View update history",
2) and uninstall failed updates that ruin your operating system.

more tips



COVID-19 corona:

Ministarstvo zdravlja objavilo je na svom sajtu brojeve telefona zdravstvenih ustanova u Srbiji na koje, u vremenu od 8 do 22 sata, mogu da se jave svi koji imaju odredene simptome respiratornih infekcija, a koji su u prethodnom periodu boravili u području zahvaćenom koronavirusom.

Kako se navodi, pozivom na te brojeve građani mogu dobiti od dežurnih epidemiologa sve potrebne informacije, kao i preporuke o daljem postupanju.


Napominje se da u takvim slučajevima nije potrebno ići u dom zdravlja ili bolnicu, niti šetnjom i drugim aktivnostima izlagati druge građane potencijalnim rizicima, već se treba odmah obratiti dežurnom epidemiologu na neki od objavljenih brojeva telefona.
Za bliže informacije građani mogu kontaktirati broj koji je otvorilo Ministarstvo zdravlja (064/ 8945 235), zatim Institut za javno zdravlje Srbije "Dr Milan Jovanović-Batut" (011/2684 566) ili institute/zavode za javno zdravlje na teritoriji na kojoj građani borave.
Na listi zdravstvenih ustanova su Gradski zavod za javno zdravlje Beograd (011/2078-677), Institut za javno zdravlje Niš (060/4119-416), Institut za javno zdravlje Kragujevac (065/8776-914), Institut za javno zdravlje Vojvodine (021/4897-800), Zavod za javno zdravlje Požarevac (064/8649-028), Zavod za javno zdravlje Ćuprija (035/8470-036), Zavod za javno zdravlje "Timok" (063/479-649).
Građani mogu da pozovu Zavod za javno zdravlje Užice (064/8577-507 i 060/8577-519), Zavod za javno zdravlje Čacak (032/325-019), Zavod za javno zdravlje Kraljevo (064/8855-006), Zavod za javno zdravlje Kruševac (037/422-951), Zavod za javno zdravlje Leskovac (064/864-8825, 064/864-8815 i 064/839-2405), Zavod za javno zdravlje Vranje (017/421-310).
Takođe, dostupni su brojevi i Zavoda za javno zdravlje Šabac (064/8605-211), Zavoda za javno zdravlje Valjevo (062/202-701, 062/202-719 i 062/202-721), Zavoda za javno zdravlje Pirot (069/3452-108), Zavoda za javno zdravlje Novi Pazar (063/1623-776), Zavoda za javno zdravlje Subotica (024/571-333), Zavoda za zaštitu zdravlja Zrenjanin (023/566-345).
Na listu su i Zavod za javno zdravlje Pančevo (013/322-965), Zavod za javno zdravlje Sombor (025/412-888), Zavod za javno zdravlje Sremska Mitrovica (022/610-511), Zavod za javno zdravlje Kikinda 023/ 421-102 i Zavod za javno zdravlje Kosovska Mitrovica (028/498-274).
UPUTSTVO MINISTARSTVA ZDRAVLJA - KAKO DA SE ZAŠTITITE

Friend


today I have a few new tutorials for you!
First, I have one blog post I wrote reflecting on a problem I'm trying to solve right now. I am working on the next version of my courses platform, and I'm considering two things. The first is this: do I want to use an existing solution? A SAAS platform or perhaps an open source software? Or do I want to build my own?
In my quest to solve this problem, I wrote this post: The Developer's Dilemma. Let me know what do you think about it.
Spoiler alert: I decided I'm going to build my own platform, using a static site and serverless functions, in true JAMstack spirit. I am still deciding the proper infrastructure details, but it's going to be fun. And it also means I'll talk quite a bit about serverless in the coming weeks!
The second post I want to highlight this week is on being a generalist, where I discuss my opinions on being a generalist versus being a specialist in the context of working as a developer.
The other posts I wrote are more technical:
What is a magic number explains what is a magic number
Don't forget that last week I published the C Beginner's Handbook (download it now in PDFePub and Mobi)
I also released a massive update to the JavaScript Beginner's Handbook (PDFePub and Mobi)
That's it for this week.
See you next Tuesday!
P.S. don't forget to follow me on Twitter

Flavio



Monday, March 9, 2020

Just learn something...

Programming

Anyone with a knowledge of high school mathematics is welcome to take this class taught at Rice University. To make learning Python easy, instructors of this course built a new browser-based programming environment. You'll learn to build simple, interactive games like Pong, Blackjack, and Asteroids.
Duration: 50 hours / 5 lessons
2. JavaScript, Codecademy
Join more than five million students in learning JavaScript — the programming language of the web. You'll develop everything from a simple "Rock, Paper, Scissors" game to an address book and even a cash register.
Duration: 10 hours / 16 lessons
Just like the courses title says, this class is designed for anyone with no prior programming knowledge. As long as you have a desire to learn to code, you're fit to take the class. And don't get intimidated by the large number of lessons. Although 75 lectures are taught, most of them are under 20 minutes long, and the time commitment is perfectly manageable if distributed well across a few weeks.
Duration: 17 hours / 75 lessons
Java is the core language used in developing Android apps and is commonly used in back-end web development. If you've never programmed before but are interested in entering either of these fields, then this course is a perfect spot for you to start.
Duration: 24 hours / 9 lessons
5. Make a Website, Codecademy
Take this short, three-hour course to learn how to build a website from scratch using HTML and CSS. You'll be asked to create a recent version of Airbnb's home page and learn the fundamentals of web development in the process.
Duration: 3 hours / 5 lessons
One of the most popular and widely used programming languages, C is commonly used to program operating systems such as Unix. Upon completing this course, you'll learn everything from functions, methods, and routines to variables, arrays, and pointers.
Duration: 15 hours / 17 lessons
Taught by the Hong Kong University of Science and Technology, this course teaches you the essential elements of web development. Although no previous experience in HTML, CSS, and Javascript is necessary, the instructors note that it would be helpful to have some type of prior programming knowledge. By the end of the course, you'll be able to create a website using HTML elements, apply CSS to parts of a website, and program interactive Javascript in a website.
Duration: 12 hours / 3 lessons
Anyone with a basic knowledge of HTML and familiarity with CSS is encouraged to take this course taught by the World Wide Web Consortium (also known as W3C). You'll learn to use the new simplified HTML5 tags, animate fun web graphics, and practice coding techniques through multiple interactive exercises.
Duration: 48 hours / 6 lessons

Design

This series of step-by-step videos will teach you Photoshop terms and definitions and get you started with using basic tools and techniques. You'll start off by resizing and resampling images, then move on to correcting the colors of an image and removing unwanted information. You'd be surprised by how much you can learn in 90 minutes!
Duration: 1.5 hours / 10 lessons
Udemy's introduction course covers the basics so you can get started using Photoshop CC as soon as possible. Want to learn to use the marquee tool in detail, feather a selection, or refine edge command? You've come to the right place.
Duration: 2 hours / 23 lessons
11. Adobe After Effects, ALISON
Adobe After Effects is a popular software program used to create motion effects and visual graphics for video. In this course, you'll be introduced to the After Effects GUI and workspace and learn everything from importing and organizing files to understanding composition and video standards.
Duration: 3 hours / 1 Lesson
In this 40-minute tutorial, Adobe Creative Suite Podcast's Terry White will show you the basics that'll help you get started using Adobe Illustrator CS6. Duration: 40 Minutes / 1 Lesson
Concept sketching takes a number of different forms — from logos and layouts to characters and environment design. In this course, you'll learn the fundamentals of each of these forms using Adobe Photoshop. These step-by-step videos move at an easy-to-follow pace to make sure that you understand the basic tools and techniques.
Duration: 1.5 hours / 10 lessons
We know that 105 lessons seem like a lot — but the majority of these lessons are under 10 minutes. Designed by Infinite Skills, this course is a resource for anyone wanting to learn the powerful, often-intimidating page layout and design program. By the end of the class, you'll be well versed in creating print and digital-ready documents in InDesign.
Duration: 12 hours / 105 lessons

Online marketing

15. Online Advertising, OPEN2STUDY
Want to find out more about major digital platforms, social and mobile search, and how online ads are priced and delivered? If so, then OPEN2STUDY's Online Advertising course is perfect for you. Be prepared to learn how to set realistic and measurable campaign objectives, identify the steps involved in digital campaign planning, and understand the process of selling an online ad program.
Duration: 16 hours / 33 lessons
16. Google Analytics, ALISON
One of the premier tools for analyzing web traffic, Google Analytics is useful whether you're running a major international commercial website or managing a personal blog. At the end of this course, some of the skills you'll have mastered include knowing how to see how well your paid keywords perform, determining the keywords that bring high value visits, and identifying problem areas in your campaigns.
Duration: 2 hours / 1 Lesson
17. Social Media 101, Social Media Quickstarter
Email marketing provider Constant Contact created this online tutorial to get you started on building your social media presence across all of the top social networks — from Facebook, Twitter, and LinkedIn to Instagram, Pinterest, and Google+.
Duration: 1.5 hours / 1 Lesson
Heard of SEO, but never got the chance to understand what it actually is? This is the course for you. Upon completing the class, you'll become an expert on the three pillars of powerful SEO, resulting in you knowing how to get to the top of the search results.
Duration: 1 hour / 15 lessons
19. Diploma in E-Business, ALISON
This course will help all business owners increase their knowledge of what online marketing is and how to go about implementing a successful online marketing strategy. Concrete skills you'll have by the end of the course include using AdSense and AdWords, analyzing revenue metrics and custom reporting, and navigating Google Analytics reports.
Duration: 10 hours / 15 lessons
In this class, MailChimp's Allyson Van Houten teaches you how to craft an email marketing strategy that will help you achieve your business goals. Whether you're a small business owner, a freelancer, or a part of a startup team, you'll be able to learn from the bite-sized lessons packed with core email marketing concepts, guiding questions, and practical resources.
Duration: 1.5 hours / 14 lessons
The Muse partnered with digital powerhouse Mashable to create this class that will teach you how to integrate social media into your job search strategy. Apart from learning to establish your personal brand and network with people online, you'll identify job opportunities via social media and turn leads into real-life job opportunities.
Duration: 5 lessons

Communication

Originally taught at the University of California, Irvine, this course gives you the chance to strengthen your personal and professional relationships by addressing conflicts between individuals within organizations. More specifically, you'll develop skills aimed at managing intercultural conflicts in today's global society, and explore how factors like competing interests and power imbalances affect management strategies.
Duration: 12 hours / 4 lessons
Email etiquette, letter-writing, web and URL searching: These are communication skills no professional can live without. In this hour-long online course, you'll be equipped to communicate effectively and improve your thinking, writing, and information literacy in different electronic environments.
Duration: 1 hour / 10 lessons
Does the idea of networking or resolving conflict make you cringe? If so, this course by Dr. Andrew Heys of Macquarie University could bring you renewed confidence. You'll learn concrete skills like labeling different phases of negotiation and learning what to do in each phase, using a general framework for analyzing and resolving conflict, and bridging the gap between "knowing" and "doing" so that you can put the skills you learn into practice.
Duration: 4.5 hours / 40 lessons
Taught by Michael Williams, international expert speech coach and the founder of The Start Speaking Training Center, this course aims to help you create a brand new way of speaking that is smooth, fluent, and confident. Williams' students have gone from struggling with stuttering and stammering to winning Toastmasters competitions.
Duration: 3 hours / 20 lessons
No matter where you are in your career, we're guessing that you've become familiar with poorly made presentations. But not all presentations have to be that way — and that's where this course comes in. Upon completing the class, you'll know how to effectively engage and persuade an audience, develop an effective presentation by mapping its flow and creating presentation aids, and assess the expectations of your audience.
Duration: 3 hours / 3 lessons
This Yale University course will help you become a better negotiator. You'll leave the course better able to predict, interpret, and shape the behavior of people you face in competitive situations. Apart from that, you'll learn to make ultimatums, avoid regret, and deal with someone who has a very different perspective on the world. Advanced topics in this course include negotiating when you have no power, negotiating over email, and the role of gender differences in negotiation.
Duration: 11 hours / 9 lessons

Writing

28. Business Communication — Fundamentals of Business Writing, ALISON Being able to express your thoughts and ideas through writing in a clear, concise, and efficient manner is crucial in the business world. Whether you're sending an inquiry to a company or submitting a cover letter for a job application, how the letter is written and formatted can make the difference between having it taken seriously or not. That's why this course aims to give you the skills — and the confidence — needed to write professionally in any situation.
Duration: 3 hours / 3 lessons
Instructed by Professor Maggie Sokolik at University of California, Berkeley, this course focuses on essay development, grammatical correctness, and self-editing. You'll learn strategies for writing longer texts and thesis statements and master the skill of writing effective introductions and conclusions.
Duration: 30 hours / 5 lessons
30. Introduction to Journalism, Class Central
Calling everyone interested in journalism: This course taught by the University of Strathclyde Glasgow could be the perfect class for you. Run by a team of internationally renowned scholars and journalism practitioners, the class gives you a behind-the-scenes look at the professional world of reporters and editors. The six topics are: what makes a good story, writing news, writing features, opinion writing, politics and journalism, and investigative journalism.
Duration: 24 hours / 6 lessons
31. Start Writing Fiction, FutureLearn
Intended for anyone with an interest in fiction writing (with no prior experience necessary), this course teaches you how to develop your ideas and reflect on the writing and editing process. You'll hear other writers talk about their approaches to research and consider different plot strategies.
Duration: 24 hours / 8 lessons
Over eight weeks, this course, designed by instructors from the University of Melbourne, will teach you the basics of news writing, how to interview people to gain crucial information, how to develop your sources, and how to use your legal rights to access public information. You'll explore the ethics behind journalism practice and conduct a mock investigation into local government.
Duration: 56 hours / 8 lessons
Does the idea of increasing your corporate wealth, opening new career doors, or creating additional income opportunities sound exciting to you? If so, then consider taking Udemy's course that will help you become an engaging and polished business writer — and teach you how to create income-generating opportunities through writing.
Duration: 1 hour / 11 lessons
Taught by University of California, Berkeley's professor Daniel Heimpel, this course aims to teach students how to use journalism and media as an implement of social change. You'll learn to report so that your work can drive political will toward positive policy solutions and gain strategies for becoming an effective change agent yourself.
Duration: 24 hours / 6 lessons

Entrepreneurship

Although this course was originally taught at Massachusetts Institute of Technology, don't expect to watch a series of lectures. Instead, every session in the syllabus is an in-depth and focused case study of MIT entrepreneurs from areas as diverse as mobile applications and 3D printing to power electronics and international development. From these case studies, you'll learn how to go from having an idea to gaining an understanding of who will buy your product. The course is free, but you can add a MITx Certificate for $100.
Duration: 24 hours / 6 lessons
Instructed by online entrepreneur Mike Omar, this course aims to help you make money while you sleep (no, we're not joking). The course materials were designed to make you $5,000 per month in passive income earnings. What's more, the skills you learn in this course will allow you to build all kinds of online businesses in the future.
Duration: 12 hours / 24 lessons
This course is created for anyone who is interested in starting his or her own company or wants to learn more about the factors involved in growing a business. You'll gain knowledge of the changes, transformations, strategies, and mistakes that need to be considered when growing a business internationally.
Duration: 3 hours / 5 lessons
This Northwestern University course will teach you how to make strategic decisions that are grounded in operational reality. You'll learn how to build and evaluate the "operating system" of a firm to maximize value. At the end of the course, you'll be able to create an effective, actionable plan that will scale your department or organization.
Duration: 20 hours / 5 lessons
Interested in learning about entrepreneurial characteristics and psychology, intrapreneurship, or family businesses? If any of these topics sound exciting to you, then enroll in this OPEN2STUDY course. You'll study everything from the role of power and politics in businesses to managing the family while managing the business.
Duration: 16 hours / 40 lessons
Recorded at SXSW Interactive 2012, this course provides all the presentations from the Lean Startup event. You'll learn lean startup methodology from some of the world's leading entrepreneurs and startup experts like Steve Blank, Scott Cook, and Todd Park.
Duration: 6 hours / 18 lessons

Law

41. Law and the Entrepreneur, Coursera
If you're a passionate (or aspiring) entrepreneur who feels intimidated by the legal aspects of your business, this is the course for you. Designed by Northwestern University, this course covers topics such as American law on choice of entity, protecting intellectual property of the business with patent, and trademark and copyright law.
Duration: 42 hours / 6 lessons
Using videos of real witnesses, this course explores the psychology of eyewitness testimony. You'll get to see whether your investigative skills are as proficient as those of police officers and try to solve different crimes using evidence from cameras that go behind the scenes of police investigations. (While not applicable to most professions, it sounds like a lot of fun.)
Duration: 24 hours / 8 lessons
Take this course if you'd like to learn about the important principles in business law. You'll study everything from legal requirements and legal recommendations to financial status and taxation.
Duration: 2 hours / 2 lessons
44. Copyright Made Easy, Udemy
Designed by a licensed attorney, this class gives you a comprehensive introduction to copyright law. At the end of two hours, you'll understand the benefits that intellectual property brings and learn how to apply copyright law to your content.
Duration: 2 hours / 8 lessons
This course taught by the University of Adelaide will help you understand the competing tensions of laws related to privacy and national security. You'll learn the nature and consequences of cyber-activism and cyberwar, as well as the purpose and impacts of global networked surveillance technologies.
Duration: 18 hours / 6 lessons




https://mashable.com/2015/10/13/free-online-classes/?utm_cid=mash-com-fb-pete-link#qq1uTfAREuqN

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