Isso Sim é Que é Matemática.

Muitos bons conselhos.

a big sister’s college tips

wait until after syllabus week to buy your textbooks. they might not be required. it’ll save you money 

prioritize your classes by number of credit hours. more credit hours = bigger impact on your GPA. sometimes there’s not enough study time to go around  

if you wanna dress up for class, dress up for class. if you wanna pull up in the sweatshirt you wore yesterday, that’s okay too 

locate your classes before they start, so you don’t get lost on the first day. check and see if your college has an app of some sort with a campus map! 

old exams are more valuable than life itself  

set your class schedule as your home screen until you’ve got it down 

Chegg.com. you’re welcome 

carry a sweatshirt. it may be 100 degrees outside but chances are it’s 30 degrees in your lecture hall  

keep your syllabi  

write things down!! planner, phone, laptop, etc.  

sit in the front. go up and introduce yourself to your professor after the first day, say you’re looking forward to the class. build a relationship! Professors do not round grades for students they don’t at least recognize 

bring your chargers with you everywhere 

sometimes it’s easier to wake up early and study for an exam than stay up late the night before  

shower shoes. have you ever heard of toe fungus 

the dorms are bad BUT you will get through it (and make friends while doing it) 

there’s no such thing as a condom that doesn’t fit    

every time you skip class it costs you money. go to class. (unless you are dying or have no other time to finish something for another class)

your mental health is important. college can be overwhelming. know your limits. seek help if you need it. 

sometimes if you go to your professor’s office hours and ask questions a day or two before an exam they will steer you towards information that will be covered 

find your study space. the library is your friend  

parking is a bitch and a half 

it’s okay to miss your parents. call them. (they miss you too) 

talk to your advisor!!! let them advise you!!!

don’t study yourself into the ground. after college you’re a real life adult - enjoy college while it lasts. go out, make friends, if you drink, do so responsibly. uber exists for this very reason 

keep an eye on your drink at all times 

don’t feel pressured to go out and drink because college. it’s not for everybody  

on a related note: pedialyte is your friend  

don’t be afraid to drop a class that doesn’t fit you, but talk to your advisor first 

chances are you’re paying a lot of money to be where you are. party if you wanna, but do not let it interfere with your grades.  

you’re gonna get a lot of free stuff. take advantage 

if you can handle it with your class load, get a job. it’s a good way to make friends. 

it’s okay to change your major. really! 

first semester is easier if you get involved with something!!   

there will be weeks when you have nothing due, and then there will be weeks when you have 5 exams 14 assignments and 2 papers due all at once. take advantage of down time. work ahead!! make life easier for your future self  

carry a water bottle  

exercise will not only help avoid the freshman 15 but also make you feel better  

it’s okay if you’re not best friends with your roommate 

communicate if they are doing something that annoys you  

keep your dorm clean. the only thing worse than a tiny space is a messy one 

buy an umbrella

24 Invaluable Skills To Learn For Free Online This Year

Here’s an easy resolution: This stuff is all free as long as you have access to a computer, and the skills you learn will be invaluable in your career, and/or life in general. 

1. Become awesome at Excel.

Chandoo is one of many gracious Excel experts who wants to share their knowledge with the world. Excel excellence is one of those skills that will improve your chances of getting a good job instantly, and it will continue to prove invaluable over the course of your career. What are you waiting for?

2. Learn how to code.

littleanimalgifs.tumblr.com

Perhaps no other skill you can learn for free online has as much potential to lead to a lucrative career. Want to build a site for your startup? Want to build the next big app? Want to get hired at a place like BuzzFeed? You should learn to code. There are a lot of places that offer free or cheap online coding tutorials, but I recommend Code Academy for their breadth and innovative program. If you want to try a more traditional route, Harvard offers its excellent Introduction to Computer Science course online for free.

3. Make a dynamic website.

You could use a pre-existing template or blogging service, or you could learn Ruby on Rails and probably change your life forever. Here’s an extremely helpful long list of free Ruby learning tools that includes everything from Rails for Zombies to Learn Ruby The Hard Way. Go! Ruby! Some basic programming experience, like one of the courses above, might be helpful (but not necessarily required if you’re patient with yourself).

4. Learn to make a mobile game.

If you’re not interested in coding anything other than fun game apps, you could trythis course from the University of Reading. It promises to teach you how to build a game in Java, even if you don’t have programming experience! If you want to make a truly great game, you might want to read/listen up on Game Theory first.

5. Start reading faster.

Spreeder is a free online program that will improve your reading skill and comprehension no matter how old you are. With enough practice, you could learn to double, triple, or even quadruple the speed at which you read passages currently, which is basically like adding years to your life.

6. Learn a language!

With Duolingo, you can learn Spanish, French, Portuguese, Italian, or English (from any of the above or more). There’s a mobile app and a website, and the extensive courses are completely free.

Full disclosure: BuzzFeed and other websites are in a partnership with DuoLingo, but they did not pay or ask for this placement.

7. Pickle your own vegetables.

Tired of your farmer’s market haul going bad before you use it all? Or do you just love tangy pickled veggies? You too can pickle like a pro thanks to SkillShare and Travis Grillo.

8. Improve your public speaking skills.

You can take the University of Washington’s Intro to Public Speaking for free online. Once you learn a few tricks of the trade, you’ll be able to go into situations like being asked to present at a company meeting or giving a presentation in class without nearly as much fear and loathing.

9. Get a basic handle of statistics.

UC Berkeley put a stats intro class on iTunes. Once you know how to understand the numbers yourself, you’ll never read a biased “news” article the same way again — 100% of authors of this post agree!

10. Understand basic psychology.

Knowing the basics of psych will bring context to your understanding of yourself, the dynamics of your family and friendships, what’s really going on with your coworkers, and the woes and wonders of society in general. Yale University has its Intro to Psychology lectures online for free.

11. Make your own music.

Step one: Learn how to play guitar: Justin Guitar is a fine and free place to start learning chords and the basic skills you’ll need to be able to play guitar — from there, it’s up to you, but once you know the basics, just looking up tabs for your favorite songs and learning them on your own is how many young guitar players get their start (plus it’s an excellent party trick).

Step two: A delightful free voice lesson from Berklee College Of Music.

Step three: Have you always thought you had an inner TSwift? Berklee College of Music offers an Introduction to Songwriting course completely for free online. The course is six weeks long, and by the end of the lesson you’ll have at least one completed song.

Step four: Lifehacker’s basics of music production will help you put it all together once you have the skills down! You’ll be recording your own music, ready to share with your valentine or the entire world, in no time!

12. Learn to negotiate.

Let Stanford’s Stan Christensen explain how to negotiate in business and your personal life, managing relationships for your personal gain and not letting yourself be steamrolled. There are a lot of football metaphors and it’s great.

13. Stop hating math.

If you struggled with math throughout school and now have trouble applying it in real-world situations when it crops up, try Saylor.org’s Real World Math course. It will reteach you basic math skills as they apply IRL. Very helpful!

14. Start drawing!

All kids draw — so why do we become so afraid of it as adults? Everyone should feel comfortable with a sketchbook and pencil, and sketching is a wonderful way to express your creativity. DrawSpace is a great place to start. (I also highly recommend the book Drawing on the Right Side of the Brain if you can drop a few dollars for a used copy.)

15. Make your own animated GIF.

BuzzFeed’s own Katie Notopoulos has a great, simple guide to making an animated GIF without Photoshop. This is all you need to be the king or queen of Tumblr or your favorite email chains.

16. Appreciate jazz.

reddit.com

Have you never really “gotten” jazz? If you want to be able to participate in conversations at fancy parties and/or just add some context to your appreciation of all music, try this free online course from UT Austin.

17. Write well.

Macalester College’s lecture series is excellent. If you’re more interested in journalism, try Wikiversity’s course selection.

18. Get better at using Photoshop.

Another invaluable skill that will get you places in your career, learning Photoshop can be as fun as watching the hilarious videos on You Suck At Photoshop or as serious as this extensive Udemy training course (focused on photo retouching).

19. Take decent pictures.

Lifehacker’s basics of photography might be a good place to start. Learn how your camera works, the basic of composition, and editing images in post-production. If you finish that and you’re not sure what to do next, here’s a short course on displaying and sharing your digital photographs.

20. Learn to knit.

Instructables has a great course by a woman who is herself an online-taught knitter. You’ll be making baby hats and cute scarves before this winter’s over!

21. Get started with investing in stocks.

If you are lucky enough to have a regular income, you should start learning about savings and investment now. Investopedia has a ton of online resources, including this free stocks basics course. Invest away!

22. Clean your house in a short amount of time.

Unf$#k Your Habitat has a great emergency cleaning guide for when your mother-in-law springs a surprise visit on you. While you’re over there, the entire blog is good for getting organized and clean in the long term, not just in “emergencies.” You’ll be happier for it.

23. Start practicing yoga.

Most cities have free community classes (try just searching Google or inquiring at your local yoga studio), or if you’re more comfortable trying yoga at home, YogaGlohas a great 15-day trial and Yome is a compendium of 100% free yoga videos. If you’re already familiar with basic yoga positions but you need an easy way to practice at home, I recommend YogaTailor’s free trial as well.

24. Tie your shoelaces more efficiently.

It’s simple and just imagine the minutes of your life you’ll save!

The surprisingly complex world going on inside a vacuum tube. Great explanation of how they work:

my trick for getting through grad school is learning to navigate the quadrants with all their nuances

Characteristics and Applications of LoRa Spread Spectrum Modulation SoC Module

LoRa spread spectrum modulation technology, known for its low power consumption and long-distance transmission capabilities, excels in long-range wireless communication. So, what kind of sparks will this modulation technology create when applied to SOC modules? Let's briefly illustrate this with the LoRa-STM32WLE5 LoRa spread spectrum modulation SOC module developed by NiceRF.

The LoRa-STM32WLE5 wireless module  is SOC wireless module the latest  developed by NiceRF Wireless. The LoRa-STM32WLE5 adopts ST's STM32WLE5 chip as the main chip, equipped with a high-performance Arm Cortex-M4 32-bit RISC core, operating at a frequency of up to 48 MHz. supporting 256KB flash memory and 64KB operational memory. This module ensures ample storage and processing capabilities. Additionally, the module is equipped with an industrial-grade crystal oscillator, ensuring stable operation in various working environments. 

In terms of communication technology, the LoRa-STM32WLE5  adopts  LoRa spread spectrum modulation, which features low power consumption and long-distance transmission. This makes the module perform exceptionally well in ultra-long-range wireless communication. It has a high receiving sensitivity of up to -141dBm@BW=125KHz and adjustable transmission power, with a maximum of 22dBm, allowing for transmission distances of over 5000 meters. This characteristic offers extensive application possibilities in fields such as security systems, smart agriculture, and industrial manufacturing. 

In addition to its technical features, the LoRa-STM32WLE5  also has  advantages such as low power consumption, secure encryption, and multiple interface types. Its sleep current is less than 1uA, and its receive current is less than 8mA, making it suitable for scenarios requiring long battery life and high energy efficiency. Additionally, it supports 256-bit hardware encryption and PCROP read/write protection, ensuring data security and integrity. The support for various interface types, including UART, SPI, I2C, GPIO, and ADC, enables it to meet the interface needs of different application scenarios, offering excellent scalability and flexibility.

In terms of applications, the LoRa-STM32WLE5 wireless module can be widely used in security systems, smart agriculture, industrial manufacturing, and smart home scenarios.

For example: in security systems, it can be used for remote monitoring and alarm systems; in smart agriculture, it can be utilized for agricultural environment monitoring and automated irrigation systems;in industrial manufacturing, it can be applied to equipment monitoring and remote control systems; and in smart homes, it can be used for smart door locks and environmental monitoring.

In the future, with the development of IoT technology and the proliferation of intelligent applications, the LoRa-STM32WLE5 wireless module is expected to demonstrate its value in more fields. For instance, in urban smart construction, it can be applied to smart city traffic systems and intelligent energy management. In the industrial IoT sector, it can be used for remote monitoring of industrial equipment and intelligent production lines. Additionally, as technology continues to advance and costs continue to decrease, the LoRa-STM32WLE5 wireless module will become more widespread and mature, bringing more convenience and possibilities to people's lives. 

For details, please click：https://www.nicerf.com/products/ Or click：https://nicerf.en.alibaba.com/productlist.html?spm=a2700.shop_index.88.4.1fec2b006JKUsd For consultation, please contact NiceRF (Email: sales@nicerf.com).

Old good times

SEGA Japan chronicled a list of their home game consoles online in the early 90s but abandoned it before the Dreamcast launched. You can still access the site through https://sega.jp/fb/segahard/

Piuiii

Fofo muito fofo.

Boa notícia. Vai acabar com muitas notícias falsas.

Scientists Developed A Clever Way To Detect Deepfakes By Analyzing Light Reflections In The Eyes - The Method Has Proven Accurate On Portrait-Style Deepfakes https://ift.tt/3cp97Fx

Mais idéias.

How To Create a Self-Study Schedule Part II: Casual Studying

Hello polyglots! I apologize for the lateness of this post! As you know I posted about how to create a study schedule if you are studying a language(s) intensively. Now I’m going to talk about how to study one language or multiple languages casually.

First, I need to define what casual studying even means. Studying casually means that you are foregoing certain aspects of language study in order to maintain a slow and low commitment pace. For example, say you’re learning French casually. Instead of psycho crazy grammar schedules filled with practicing grammar and vocab over and over, and quizzing yourself every day until your brain turns to pulp, you opt for a simple audio lesson every day for 15 minutes after you come home from work or school. Easy right? Yes! That’s the goal. With casual studying your schedule is freed up for other things. In addition, casual studying gives you the leisure to take your time to learn things deeply and thoroughly. Casual studying, however, implies that you are not studying so much for full fluency but for practical, everyday usage. So casual learners care a little less about learning the specifics about complicated grammar but instead want to learn how to use it in conversation by learning dialogues and repeating phrases. So how do you create a casual study schedule? Here’s what you’ll need to get started.

Keep reading