FMath 22 https://www.fmath.info Conference Fri, 18 Nov 2022 09:30:03 +0000 en-US hourly 1 https://wordpress.org/?v=5.8.2 https://www.fmath.info/wp-content/uploads/2021/12/cropped-maths-32x32.png FMath 22 https://www.fmath.info 32 32 iOS and Android OS: Similarities and Differences https://www.fmath.info/ios-and-android-os-similarities-and-differences/ Fri, 18 Nov 2022 09:29:59 +0000 https://www.fmath.info/?p=8011 iOS and Android are the major phone and tablet operating systems. The latter is the most popular worldwide while the former is the most popular in the USA with 60% […]

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iOS and Android are the major phone and tablet operating systems. The latter is the most popular worldwide while the former is the most popular in the USA with 60% of users. Both of the systems have their strong points and weak points. Take a look at the discussion below to learn more.

What is the difference between iOS and android?

If you take a quick look at each of these operating systems you’ll identify several similarities in their capabilities as both can perform major tasks. But, a detailed look at some of the main operations and support will prove otherwise. Take a walk through some of these categories to learn the difference.

Convenience

To begin, an iOS is easier to use than an Android because most of its apps are native. This ease of use is achieved because both the hardware and the software are designed by the same manufacturer hence they work smoothly. Also, it offers smooth usage and linking across all its gadgets.

Second, Android provides more room for customization of its interface and making adjustments like changing appearance than iOS. This makes it the best choice for those who love customization.

Besides, it’s also quite easier to multitask on Android than on iOS. One can comfortably perform multi tasks such as splitting displays to playing videos and carrying out other tasks at the same time. 

Android also offers an option for expanding storage using SD cards. The iPhone on the other hand only offers this option on its flagship smartphones. Regardless, Apple cutters for this by offering large internal storage.

If you look at it in terms of creativity,  Android offers more design features than iOS. For example phones like Samsung come as folding or stylus devices while the iPhone only comes with a standard design. The Android phones also offer a more full-screen display than iPhone. This is because they have small-size or retractable selfie cameras. 

Apple users can also easily synchronize and manage their files and data across all Apple devices.

Last, most app developers prefer to first design their applications on the iPhone platform and then later move to other platforms. Therefore, Apple users have early access to most applications. Moreover, the applications are more integrated into Apple devices than they’re on other devices.

So what about access to personal data? Keep reading to learn more.

Privacy

First, both users of these operating systems lose some of their privacy during app installation. Generally, most apps make requests for access to certain information such as contact and media files.

Android apps have allowed its user to grant permission for this request. However, most apps exploit this chance by requesting several things. This has been noticeable in cases where a single app asks for less access in an iOS than it does in a Google operating system.

Generally, iOS offers more control over permission granted to applications than Android. It also offers advanced encryption that can further keep the device data safe even if you lose your fall into wrong hands.

Repairability

First, when it comes to repairability, the iPhone is generally difficult to repair. This is so if looked at regarding the restrictions of third-party repair. Often, most of the iPhone’s components are linked to its software. Therefore, in case a third party performs a replacement, the new part will either lose some features or show warning messages. Though, one can avoid this by accessing repairs from brand manufacturers or authorized dealers.

Second, most android devices need more time to repair, for example, the latest Samsung. This is because they require detailed teardowns when swapping components like batteries or screens. But, on the good side, they’re generally known to have hardware that is more accessible.

Last, based on the rate of access to repair, Apple leads as their support centers and authorized dealers are widely spread. Moreover, Apple has an online iPhone platform where its users can ask for help from other users and experts. Also, the general maintenance of an Apple device is low since its components are durable. When compared based on ease of breaking, both the iOS and Android can break. Though you can get proficentily fixed cracked iPhone screens in NYC.

Support

This is one area where iOS has been taking lead. It provides consistent and timely updates for its users than Google’s operating system.

Moreover, the duration at which they support their devices is longer than that of Android. The former offer a range of 5 to 7 years’ support while the latter offer 3 to 5 years’ support. This is great for Apple users with old devices as they’re protected against the latest threats.

Lastly, Android users have the challenge of receiving updates at the same time because of its wide ecosystem. So, once Google releases updates each brand manufacturer determines its own time when they’ll roll out their updates. On the contrary, Apple users receive their respective updates at the same time. 

Conclusion

To sum this up, Either an iPhone or Android is a good choice based on one’s needs. Though, if you’re considering a gadget that’s easy to use, has a longer life span and has swift performance then the former will be a perfect choice. 

Meta Description:

iOS and Android are major operating systems. This article takes a deeper look at some of their similarities and differences.

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How to Become a Business Programmer? https://www.fmath.info/how-to-become-a-business-programmer/ Fri, 11 Nov 2022 10:08:14 +0000 https://www.fmath.info/?p=8007 For a couple of years, skill-based jobs are taking lead in every industry. Whether it’s a dairy business or a laptop renovation, all needed websites to extend their revenue.  As […]

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For a couple of years, skill-based jobs are taking lead in every industry. Whether it’s a dairy business or a laptop renovation, all needed websites to extend their revenue. 

As per the observations of Slashdata, roughly 26.9 million people are working as software developers for different companies. By 2030, this number will surge up to 45 million. 

Also, As per an analysis of U.S.News, a business programmer can earn up to an average of  $89,190 per year.

In this article, you will learn more about “how to be a business programmer” and less about its pros and cons. So, without wasting another moment, let us start our blog. 

What is a Business Programmer?

Before getting into details, let us first understand who are business programmers. Business programmer use skills related to computers and turn data into useful information. 

For instance, if you have visited Amazon or Alibaba, you are seeing everything is well structured but it’s the efforts of business programmers who turned ideas into a website. 

Put simply, business programmers work to add value to your business by helping it to convert online. All games you play, all websites you visit or any other thing you do online, is a result of the seamless efforts done by business programmers. 

They are the ones with the best understanding of how to run a computer or how to make the best use of it. Plus, they are well aware of programming languages with MS Office, Python codes etc. 

Coming to the education of business developers. Most business developers are having bachelors in computer science. The remaining have chosen either independent courses or certifications. 

What Does a Business Programmer Do?

Now, you have to understand business programmers. Let’s take insights into what is their job:

  • Business programmers write code for software. 
  • They develop mobile and computer applications 
  • They work as front-end and back-end programmers for websites 
  • They collaborate with production and marketing teams regarding the best results for products 
  • They communicate with writers for their programming systems
  • They keep a staunch eye on every latest innovation and help a company to grow accordingly 
  • Business programmes provide QA testing of websites and applications
  • They document SQL codes for monthly web reports

To achieve all the above tasks, a business programmer needs to have the following skills:

  • They should know about Mysql, Java, Javascript, PHP, SAS and PI/SQL
  • Programmers should have troubleshooting skills, so if any problem arises, they could do it astutely
  • They should also have analytical skills to meet the standards of the industry with complex coding.

Few Tips 

Here comes the most important part, “how to be a business programmer?” The answer is simple. Follow these tips:

Be Educated! 

Once you have decided to be a programmer, first consider your educational need. Most have bachelors in computer science and even higher degrees. Some are programmers with a high school degree and have done certifications and online courses regardless of their educational background. 

Many learning platforms are also offering Bootcamp services where you can learn and also work practically.

Preferred Industry

Many fields are available in the business programming career. You can start as a coder or go for a front-end developer. You can also choose Artificial Intelligence with Python coding or cybersecurity. You may go to any industry be it tech, production or agriculture. 

Learn Programming Languages 

Business programmers should know at least 3 programming languages, specifically HTML, CSS and JavaScript. These 3 are the architecture of any site. 

Start Job Hunting

You can build your website, or a mobile app or could do some modifications to the software to demonstrate them to employers on resumes. You may go for an on-site job or a remote facility in the same company. For longer engagement we highly recommend you explore freelancing as well. 

Conclusion

In this guide, we have enriched you about everything a business programmer does, starting from their definition to their roles, with a few tips for you to be a successful programmer. 

Business programming has now become a lucrative job and has the potential to grow in a short period. It’s an art requiring analytical abilities to resolve the issue and add value to the business, websites and applications. 

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How blockchain networks could be used to boost energy production https://www.fmath.info/how-blockchain-networks-could-be-used-to-boost-energy-production/ Wed, 02 Nov 2022 11:51:36 +0000 https://www.fmath.info/?p=8003 The idea of using blockchain technology to decentralize energy production is not a new one. In fact, a number of startups and established companies are already working on implementing this […]

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The idea of using blockchain technology to decentralize energy production is not a new one. In fact, a number of startups and established companies are already working on implementing this very idea. The basic premise is that by distributed ledgers and smart contracts, it would be possible to create a more efficient, resilient and sustainable energy system.

One company that is leading the way in this space is Power Ledger. Power Ledger’s platform enables households with rooftop solar panels to trade excess energy with their neighbours. Using blockchain technology, the platform provides a secure and transparent way to track energy flows and ensure that everyone involved gets a fair share of the benefits.

In addition to Power Ledger, there are a number of other companies working on similar projects. For example, LO3 Energy is using blockchain to create a “transactive grid” in Brooklyn, New York. The project enables residents to buy and sell energy with each other using a smartphone app.

There are also a number of pilot projects underway that are exploring the potential of blockchain for the energy sector more broadly. In one notable example, a group of European utilities is working on a project called TANGERINE that will use blockchain to help balance the electricity grid.

The benefits of using blockchain to boost energy production

There are a number of potential benefits to using blockchain to boost energy production.

First, blockchain could help to make the energy sector more efficient. For example, by streamlining the process of buying and selling energy, blockchain could help to reduce the amount of time and money that is wasted in the current system.

Second, blockchain could also help to increase transparency in the energy sector. For example, by making it easy for consumers to see where their energy is coming from, blockchain could help to increase confidence in renewable energy sources.

Third, blockchain could also help to create new business models for the energy sector. For example, by making it easier for people to trade energy with each other, blockchain could create a new market for energy trading.

Finally, blockchain could also help to improve the efficiency of the energy sector. For example, by making it easier for energy producers to sell their excess energy, blockchain could help to reduce waste and improve the overall efficiency of the energy system.

In conclusion, blockchain technology has the potential to revolutionize the energy sector. By streamlining the process of buying and selling energy, increasing transparency, creating new business models, and improving efficiency, blockchain could have a profound impact on the way that the energy sector operates.

Ways of using blockchain to promote energy production

1. Decentralized energy trading

One way that blockchain could boost energy production is by facilitating decentralized energy trading. Today, most energy trading takes place on centralized exchanges that match buyers and sellers. However, this system is inefficient and prone to manipulation.

Blockchain-based energy trading platforms would allow for peer-to-peer (P2P) energy trading. This would make the process of buying and selling energy more efficient, as well as increasing transparency and reducing the risk of fraud.

2. Renewable energy certificates

Another way that blockchain could boost energy production is by streamlining the process of buying and selling renewable energy certificates (RECs). RECs are used to incentivize the production of renewable energy, and they can be bought and sold on secondary markets.

At the moment, the process of buying and selling RECs is complicated and opaque. This makes it difficult for buyers to be sure that they are getting what they paid for, and it also creates opportunities for fraud.

Blockchain could help to solve these problems by providing a transparent and tamper-proof record of all REC transactions. This would make it easier for buyers to verify that they are getting genuine RECs, and it would also make it harder for sellers to commit fraud.

3. Carbon trading

Carbon trading is another area where blockchain could have a big impact. Carbon trading schemes are designed to incentivize companies to reduce their emissions, by giving them a financial reward for every ton of carbon they avoid emitting.

However, the current system for carbon trading is plagued by inefficiencies and fraud. Blockchain could help to solve these problems by providing a more transparent and tamper-proof record of all carbon emissions and offsets. This would make it easier to track emissions reductions, and it would also make it harder for companies to commit fraud.

4. Supply chain management

Supply chain management is another area where blockchain could have a big impact. The supply chain is the network of suppliers, manufacturers, distributors, and retailers that are involved in getting products from the point of production to the point of sale.

Blockchain could help to improve supply chain management by providing a shared, transparent, and tamper-proof record of all the steps in the supply chain. This would make it easier to track products, identify issues, and ensure that everyone in the supply chain is working efficiently.

Blockchain technology has the potential to revolutionize many different industries. These are just a few of the ways that blockchain could change the world.

Conclusion

The potential benefits of blockchain for the energy sector are significant. By enabling a more efficient and resilient energy system, blockchain could help to accelerate the transition to a low-carbon future.

As the energy sector looks to decarbonize and move towards a more sustainable future, blockchain could play a vital role in enabling this transition. By creating a more efficient and resilient energy system, blockchain could help to accelerate the shift to renewable energy sources and enable a more sustainable future for us all.

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Strategies for betting on Tesla ahead of earnings https://www.fmath.info/strategies-for-betting-on-tesla-ahead-of-earnings/ Wed, 02 Nov 2022 10:36:47 +0000 https://www.fmath.info/?p=7999 Investors are considering their best course of action as Tesla is ready to deliver its quarterly earnings report. Since Tesla is typically erratic around earnings announcements and the stock has […]

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Investors are considering their best course of action as Tesla is ready to deliver its quarterly earnings report. Since Tesla is typically erratic around earnings announcements and the stock has increased by nearly 400% in the previous year, some investors could be concerned about a potential decline.

Ahead of Tesla’s earnings report, there are a few alternative ways to wager on the company. Investing in Tesla Coin, a cryptocurrency linked to the value of the company’s equity, is one tactic. Investors can access Tesla without having to purchase the stock outright with Tesla currency.

Another tactic would be to use options to wager on the share price of Tesla. Tesla stock can be purchased or sold by investors using options at a predetermined price.​​

What is Tesla coin?

A cryptocurrency called Tesla coin is linked to the value of the company’s equity. Investors can access Tesla without having to purchase the stock outright with Tesla currency. Tesla coin is available for purchase and sale on a variety of exchanges, much like other cryptocurrencies.

Best strategies for betting on Tesla share price

1. Place a bet on Tesla before earnings are released

If you believe that Tesla is going to continue to post strong results, then you may want to consider placing a bet on Tesla stock before the company reports its fourth-quarter and full-year earnings.

2. Consider buying Tesla calls

Another way to bet on Tesla’s strong performance is to buy Tesla call options. This strategy will give you the potential to profit if Tesla’s stock price rises after earnings are released.

3. Wait for Tesla’s stock price to drop after earnings and then buy shares

If you think that Tesla’s stock price may drop after the company reports its earnings, you could wait for a pullback and then buy shares of Tesla stock. This strategy could help you get Tesla stock at a discount.

4. Wait for Tesla’s stock price to drop after earnings and then sell short

If you think Tesla’s stock price may drop after the company reports its earnings, you could wait for a pullback and then sell Tesla stock short. This strategy will allow you to profit if Tesla’s stock price declines.

5. Tesla’s stock price may rise after the company reports its earnings

If you think Tesla’s stock price may rise after the company reports its earnings, you could buy Tesla stock and then sell it after the price increases. This strategy will allow you to profit if Tesla’s stock price rises.

6. Tesla’s stock price may be volatile after the company reports its earnings

If you think Tesla’s stock price may be volatile after the company reports its earnings, you could buy Tesla stock and then sell it after the price moves in either direction. This strategy will allow you to profit if Tesla’s stock price rises or falls.

7. Tesla’s stock price may stay the same after the company reports its earnings

If you think Tesla’s stock price may stay the same after the company reports its earnings, you could buy Tesla stock and then sell it after the price increases or decreases. This strategy will allow you to profit if Tesla’s stock price rises or falls.

The perks of having Tesla shares

If you’re thinking about buying Tesla stock, there are a few things you should know. Tesla is one of the most innovative companies in the world, and its shares have outperformed the market in recent years. Tesla is also a leader in electric vehicles and renewable energy, which are two of the most important growth industries today.

Here are a few reasons to consider buying Tesla stock:

1. Tesla is an innovative company

The company designs, manufactures, and sells electric vehicles and batteries. Tesla’s products are some of the best in the industry, and its cars are coveted by celebrities and everyday consumers alike.

2. Tesla’s shares have outperformed the market

Tesla’s shares have outperformed the market in recent years. In fact, Tesla was one of the best-performing stocks of 2020. Tesla’s stock price has more than quadrupled since 2016.

3. Tesla is a leader in electric vehicles and renewable energy

Tesla is a leader in both industries. Tesla’s electric vehicles are some of the best on the market, and the company is investing heavily in solar and battery technology.

4. Tesla has strong financials

Tesla has reported positive earnings for four consecutive quarters. Tesla also has a strong balance sheet, with over $9 billion in cash and no long-term debt.

5. Tesla is a disruptive force in the auto industry

Tesla’s direct-sales model and focus on technology are shaking up the traditional dealership model. Tesla’s cars are also some of the most technologically advanced on the market, with features like autonomous driving and over-the-air updates.

Overall, because they have the potential to produce large profits, Tesla shares are absolutely worth buying. Tesla is a growth stock, and over the past five years, its share price has been climbing gradually. The company is in a good position to expand going forward because to excellent fundamentals.

Investors who purchase Tesla stock should be conscious that the stock is erratic and that price changes could be severe. Tesla shares, however, are probably going to offer investors solid returns over the long term.

Conclusion

No matter which strategy you choose, make sure to use stop-losses and manage your risk carefully. Tesla is a volatile stock and anything can happen during earnings season.

Happy trading!

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How to Develop a Telemedicine App: Trends, Features and Costs https://www.fmath.info/how-to-develop-a-telemedicine-app-trends-features-and-costs/ Mon, 15 Aug 2022 07:16:05 +0000 https://www.fmath.info/?p=7995 The healthcare industry has continuously been one of the most conservative industries. We’re used to seeing doctors in person for a consultation, receiving a paper prescription for medicine, etc. This […]

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The healthcare industry has continuously been one of the most conservative industries. We’re used to seeing doctors in person for a consultation, receiving a paper prescription for medicine, etc. This gives us more peace of mind about the quality of the medical treatment we get.

Over the last ten years, there has been a noticeable change in how consumers acquire goods and services. Telemedicine is now beginning to transform, changing the healthcare industry. It is projected that it will rapidly become the diagnostic and treatment method used by most people.
The Importance of Telemedicine App Development
If you are still confused as to why this industry has such great potential, look at the benefits available for patients and medical personnel.

Patients’ perks

Saving time and money
The inconvenience of spending time on the road to a hospital and managing to babysit kids while visiting a doctor is eliminated.

Access to Medical Care

People of various ages and abilities, such as children, the elderly, and those living in rural or isolated areas, now have increased access to medical treatments that were previously only available to individuals in more urban settings since telemedicine has made them more accessible.

Selection of the Best Experts

Patients now can arrange appointments with medical specialists in any part of the globe due to the advancement of telemedicine.

Preventive Care

People are encouraged to take better care of their health daily due to the accessibility to online appointments and the capability to check their health remotely. This approach has proven to be quite successful. For instance, a study carried out in 2012 on people with coronary artery disease found that preventive telemedicine improved their overall health.

Market Research and Product Concept

Before launching a product or service into the market, you need to research the telemedicine industry since this sector is undergoing fast growth. We recommend that you analyze the leading products and services and then look for a niche market that other companies do not yet hold.

App Development Using the Latest Technologies

As soon as you have identified your specific market segment and the target audience, it is time to start thinking about the technologies that will be integrated and used in your product. You won’t be able to release a simple app since the most successful telemedicine companies have already adopted the most recent industry developments.

MVP for a Telemedicine App

Now we’ve reached one of the most exciting points in the product development process – identifying the feature set that our potential product has will go forward. Please keep in mind that this is not a mandatory instruction and that you are free to experiment with the various functions according to the vision that you have for your product.

Sign Up/Sign In

Your app’s launch to the public is the most important phase; thus, it should be fast and easy. We recommend implementing a phone sign-in/sign-up in the initial edition as it helps to simplify the process and simultaneously confirms the identification.

Personal Profile

The user will be prompted to identify themselves as either a patient or a doctor immediately after the sign-up procedure. The profile creation will need various data inputs according to the response provided.

For patients: name, age, gender, photo, location, and language.
For doctors: name, age, gender, photo, location, language, area of expertise, license, introductions, available types of services, and prices.
The data can be updated later in the user’s profile.

Last but not least, patients and doctors must be able to deactivate their accounts without losing all of their personal information by downloading, for example. This means that you should provide secure and trustable storage for users’ information inside your app.

Search for a Medical Specialist

The patients can search for the appropriate doctor depending on their choices, which may include location, field of expertise, price, rating, language spoken or time slots that are available.

If you want the search results to be more convenient, we can add the sorting capability so that consumers can filter the list of doctors based on a variety of criteria, such as price or rating, etc.

Reviews and Ratings for Doctors

Detailed information on the specialists, reviews, and feedback from other patients and a doctor’s rating should be accessible.

Messaging

Not only can you utilize chat for a quick consultation, but you can also use it to share crucial information such as medical records, photos, test results, and other relevant content. Therefore, the ability to send photos, videos, and documents should be an integrated chat component.

Video Calling

This is the primary feature of the first app version. Patients and medical professionals are going to interact with one another here.

Appointment and Scheduling Management

The content of this section will change based on the type of user.
For patients: The ability to see a list of consultations (completed, upcoming, or canceled) and to change or cancel an appointment.
For doctors: The list of consultations (finished, upcoming, canceled, paid/unpaid), the schedule with the opportunity to establish free time slots for the calls, and the choices to approve, cancel, or postpone the call.

Payments

Based on the monetization model that will be adopted, patients or doctors should be able to simply pay for the services offered by the app while they are still inside the app. Let’s say that we’ve decided to go with the approach in which patients are responsible for paying for each consultation.

Final Thoughts

It is difficult to cover all facets of the telemedicine sector in one article due to the breadth and depth of the subject. Because it offers so many growth opportunities, the discovery of new niches, and the use of the most recent technology, telemedicine is an area that is impossible to ignore. We have every reason to assume that telemedicine will soon become the standard in our society and that, over the long run, it will greatly boost the level of care provided by medical professionals and, as a result, the overall health of the population.

Do you share the passion for this field to the same degree as we do? We hope this little trip into the exciting world of telehealth app development has provided you with various innovative ideas on how to dominate the industry. In addition, we are available to assist you in completing this task and await your call. Just let us know what you have in mind, and one of our specialists will provide you with a free consultation and an estimation of the project’s cost.

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5 DevOps tips to help the novice developer https://www.fmath.info/5-devops-tips-to-help-the-novice-developer/ Thu, 02 Sep 2021 19:07:15 +0000 https://wordpress.iqonic.design/epy_wp/?p=2467 DevOps is in high demand in technology today, from CI/CD (continuous software integration and deployment) to container management and server preparation.

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DevOps is in high demand in technology today, from CI/CD (continuous software integration and deployment) to container management and server preparation. You might even say it’s a buzzword… on the ear. As a developer, you can be part of the DevOps team – not necessarily preparing servers for work and managing containers, but creating great software.
A lot of what developers, DevOps engineers and IT teams do in today’s software development lifecycle is tools, testing, automation and server orchestration.
Especially if the team is involved in a large Open Source project or we’re talking about one person. Here are five DevOps tips for developers who want to work more efficiently and faster.

YAML makes frontend work easier

Introduced in 2001, YAML has become one of the languages for many declarative automations – it is often used in DevOps and development of different interface configurations, automation and so on. YAML stands for Yet Another Markup Language. YAML markup is easy to read. It puts less emphasis on round and curly bracket characters and quotes {}, [], “.
Why is this important? By learning or even improving your YAML skills, you can more easily save configurations for applications, such as settings in an easy to write and read language.
YAML files are everywhere, from corporate development workflows to open source projects. Lots of YAML files on GitHub, too (they support a product we really like: GitHub Actions, but more on that later).

DevOps tools help speed things up

Let’s get something straight first: DevOps tools are a broad concept that covers cloud platforms, server orchestration tools, code management, version control, and more. These are all technologies that make writing, testing, deploying, releasing software easier and leave any worries about unexpected failures in the past. Here are three DevOps tools to speed up workflows and focus on building great software.
Git
You probably know that Git is a distributed version control system and source code management tool. For developers, it’s the foundation of the basics and a popular DevOps tool.
Why?

Cloud-based integrated development environments (IDEs)

I know, it’s kind of hard to say out loud (thanks, marketing). A simpler way would be cloud IDEs. But these platforms are worth exploring immediately.
And here’s why. Cloud IDEs are fully hosted development environments that allow you to write and run code, debug it, and quickly deploy new, pre-configured environments. Need validation? We launched our own cloud-based IDE, Codespaces, at the beginning of the year and started using it to build GitHub. It used to take us up to 45 minutes to deploy new developer environments – now it only takes 10 seconds.
With cloud IDEs, it’s very easy and fast to deploy new, pre-configured development environments, including one-offs. Plus, with them, you don’t have to think about computer power (hello to all those who dare to write code on tablets).

Server orchestration for greater flexibility and speed

If you’re building a cloud application or even just using different servers, virtual machines, containers or hosting services, you’re probably dealing with multiple environments. Being able to make sure that the application and infrastructure fit together reduces your dependence on the development team trying to run software on your infrastructure at the last minute.
This is where server orchestration comes in handy. Server or infrastructure orchestration is usually the task of IT and DevOps teams. These include setting up, managing, preparing, and coordinating systems, applications, and underlying infrastructure to run software.

Try writing repetitive tasks in Bash or PowerShell

Imagine: you have a bunch of repetitive tasks running locally, and they take too much time each week. There’s a better, more efficient way to handle them – write scripts with Bash or PowerShell.
Bash has deep roots in the Unix world. It’s the backbone for IT, DevOps teams, and many developers.
PowerShell is younger. Developed at Microsoft and launched in 2006, PowerShell replaced the command shell and early scripting languages for task automation and configuration management in Windows environments.
Today, both Bash and PowerShell are cross-platform (although most people used to working in Windows use PowerShell, and most people familiar with Linux or macOS use Bash).

 

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Neural networks may be simpler than people think https://www.fmath.info/neural-networks-may-be-simpler-than-people-think/ Fri, 13 Aug 2021 20:12:55 +0000 https://wordpress.iqonic.design/epy_wp/?p=1014 Neural networks partly seem to undermine the traditional theory of machine learning, which relies heavily on ideas of probability theory and statistics. What is the mystery of their success?

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Neural networks partly seem to undermine the traditional theory of machine learning, which relies heavily on ideas of probability theory and statistics. What is the mystery of their success?

The researchers show that networks with an infinite number of neurons are mathematically equivalent to simpler machine learning models – kernel methods. The striking results can be explained if this equivalence extends beyond “perfect” neural networks

ML models are generally thought to perform better when they have the right number of parameters. If there are too few parameters, the model may be too simple and fail to capture all the nuances. Too many parameters and the model becomes more complex, learning such fine details that it then cannot generalize. That’s what’s called overlearning.

“It’s a balance between learning too well from the data and not learning at all. You want to be in the middle,” says Mikhail Belkin, a machine learning researcher at the University of California, San Diego, excited by the new prospects.

Deep neural networks like VGG are widely believed to have too many parameters, which means their predictions should suffer from overtraining. But this is not the case. On the contrary, such networks generalize new data with surprising success. Why? No one knew the answer to this question, although they tried to find out the reason.

Naftali Tishbi, a computer scientist and neuroscientist at the Hebrew University of Jerusalem, argued that deep neural networks first learn from data, and then go through an information bottle-neck, discarding irrelevant information. This is what helps in generalization. Other scientists believe that this does not happen in all networks.

The mathematical equivalence of kernel methods and idealized neural networks gives clues as to why and how networks with a huge number of parameters arrive at their solutions.

Kernel methods are algorithms that find patterns in data through their projection onto very high dimensions. By studying the more comprehensible equivalents of kernels of idealized neural networks, researchers can learn why complex deep networks converge in the learning process to solutions that generalize well to new data.

“A neural network is a bit like a Rube Goldberg machine. It’s unclear what’s really important about this machine,” Belkin argues. – Nuclear methods are not that complicated. I think simplifying neural networks to nuclear methods allows you to isolate the driving force behind what’s going on.”

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Mathematics for the programmer https://www.fmath.info/mathematics-for-the-programmer/ Fri, 23 Jul 2021 22:43:37 +0000 https://wordpress.iqonic.design/epy_wp/?p=526 One of the most frequent questions that newcomers, people who are far from programming, and one of the biggest stereotypes of our time ask: does a programmer need mathematics?

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One of the most frequent questions that newcomers, people who are far from programming, and one of the biggest stereotypes of our time ask: does a programmer need mathematics? And no one will give a complete answer to this question. This is due to the fact that there are many directions in programming.

Modern programming languages, which are very popular at the same time, now, can solve many problems very quickly, and their toolkit is specially made so as not to cause discomfort for developers in the development process.

Of course, most modern developers prefer to go more to Frontend, Backend and not to create problems with learning languages of any level.

Programmers who work in these areas and write in JavaScript, Python, PHP, etc. earn good money, work in high-level programming, know several technologies and do not perform complex mathematical calculations. Most of the time. It’s all good, especially when people know what they want. And when they are asked the question, “Do you need math?” they say that they only need basic math for this kind of work, but for more complex projects and technologies it is worth studying something even more complicated than the school curriculum.

And it is different when the same developers, who work only with high level and program sites, answer the same question. They say that the math is not necessary at all. Maximum is addition, subtraction, division and multiplication. And that you don’t need to go further than the law of combinatorics.

That makes sense. However, it is worth thinking about one important detail, which almost no one ever voiced. The fact that all computers and computers work with mathematics. And that at the origin of all programming is mathematics.

All software arithmetic is about numbers. Computers use a binary code (1 and 0). This is the code upon which systems run, from operating systems to neural networks. Anything that has to do with computation always interacts with numbers.

When complex calculations had to be done, pencil, paper and mind were used. But in the process of progress, realizing that such solutions require a lot of time. That’s why they started creating computers to automate certain processes. And for these processes to be automated, templates had to be developed. After all, all computerized machines work on the basis of previously created patterns. And so it turned out that the information space created today is the modernized patterns of the past.

Recall that all the people who created such things in the computational sciences always had a good knowledge of an unloved school subject. And modern computer technology hasn’t taken that science anywhere.

All complex low-level programming languages are based on mathematics, and modern high-level ones too, because they are based on nothing. And the higher the level of the language, the harder it is to create something complex and large.

Therefore often all try to avoid learning C/C++, Java and other similar languages, and prefer to go into web development, where the process of understanding of the direction and technology is easier, and pay is not worse.

Think about it, all the complicated stuff is written in low languages and includes mathematical knowledge. Of course you don’t need to learn an entire course of higher mathematics, but if you seriously want to create, for example, your own OS, write a cool framework, or a unique artificial intelligence, it will be almost impossible to do without a good mathematical knowledge and appropriate skills in the NLP.

Answering the question, “Does a programmer need math? “, I can safely answer, “Yes.” Whatever the programmer is and whatever he does, the more knowledge he has in the exact areas, the better it is for him as an expert.

This science should not be neglected, and it certainly cannot be said that only knowing addition, subtraction, multiplication and division will suffice.

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Instability without synchronization https://www.fmath.info/instability-without-synchronization/ Sun, 04 Jul 2021 19:13:47 +0000 https://wordpress.iqonic.design/epy_wp/?p=2484 One of the oldest examples of engineering is a tree. No, not growing in the woods, but a tree thrown across a stream to cross it more conveniently, quickly and dryly.

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One of the oldest examples of engineering is a tree. No, not growing in the woods, but a tree thrown across a stream to cross it more conveniently, quickly and dryly. These were the first bridges. Later they became more complex, people began to use stone and then metal. Cities grew, trade developed, and rivers, lakes, gorges, and hollows no longer made it difficult for people to move. Advances in technology, particularly transportation, enabled and even required bridges to be built larger, taller, and naturally longer. Despite the fact that cars in modern cities sometimes outnumber people (at least it often seems that way, especially when standing in traffic), pedestrian bridges still have not lost their relevance. The construction of a bridge requires accurate calculations, which will take into account all possible factors that, to varying degrees, may affect its stability and integrity. But even people walking on the bridge can cause it to sway. Scientists from the University of Georgia (USA) analyzed the Millennium Bridge in London and found that its instability has nothing to do with the synchronization of pedestrians, as previously thought. What kind of synchronization are we talking about, and what are the actual causes of wobbly pedestrian bridges? We’ll find the answers to these questions in the scientists’ report. Let’s go. Let’s go.

The basis of the study

The Millennium Bridge, which crosses the Thames, is one of the most famous pedestrian bridges in the world and a very popular landmark in London. It was opened, as the name suggests, in 2000 at the turn of the millennium. Its dimensions are not the most impressive: 4 meters wide and 370 long.

Millennium Bridge

The opening of the bridge was both a joyous and a sad day for its planners. First, Queen Elizabeth II herself attended the ceremony. Second, there were many people who wanted to walk on the new bridge – on the first day 100,000 people walked across it. This popularity also revealed the defect of the bridge – it was shaky, as it was subsequently nicknamed by Londoners. In trying to understand the cause of the defect, engineers concluded that it lay in resonance. Attempts to limit the number of pedestrians on the bridge at the same time led to crowded queues. So it was decided to add dampers, which solved the problem, and the bridge was reopened in 2002.

Nevertheless, scientists had questions about the cause of the swaying of the bridge and doubted that it was due to resonance.

To begin with, the topic of synchronization and resonance is worth touching on. Scientists explain that the synchronization of coupled almost identical oscillators leads to order in both natural and artificially created complex systems. One of the best explanations for these phenomena is considered the Kuramoto model, an example of which is often the instability of the Millennium Bridge on the day it was first discovered.

Japanese physicist Yoshiki Kuramoto proposed a mathematical model capable of describing synchronization. The essence of the model is that each of the coupled oscillators has its own frequency (ωi), and that each is coupled to all others equally.

However, many scientists back in the 2000s questioned whether the Kuramoto model could fully explain the cause of the Millennium Bridge’s wobbling.

In the paper we are considering today, scientists offer a different approach, the main essence of which is that any synchronization of pedestrian foot placement is a consequence, not the cause, of the instability of the bridge.

Interestingly enough, four days after the Millennium Bridge opened, Nobel laureate in physics Brian David Josephson said the following:

The Millennium Bridge problem has little to do with crowds walking in steps: it has to do with what people do when trying to keep their balance if the surface they are walking on begins to move, and is analogous to what might happen if several people get up in a small boat at the same time. In both cases, it is possible that the movements that people make in trying to keep their balance will cause any sway already present to increase, so that the sway continues to worsen.

The gist of this statement is that in order to maintain balance, each pedestrian must strive to lose angular momentum in their frontal plane. In addition, there is evidence that the forces on the left and right do not necessarily average out. Thus, transverse vibration energy is transferred from the pedestrian to the bridge. In fact, each pedestrian applies negative damping to the bridge.

 
 

 

 

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Explanation of the Kalman filter in pictures https://www.fmath.info/best-budgets-for-business-events/ Wed, 09 Jun 2021 19:09:59 +0000 https://wordpress.iqonic.design/epy_wp/?p=2473 Surprisingly, not many software developers and scientists seem to know about it, which saddens me because it is a very generalized and powerful tool for combining information in the presence of uncertainty.

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Surprisingly, not many software developers and scientists seem to know about it, which saddens me because it is a very generalized and powerful tool for combining information in the presence of uncertainty. Sometimes its ability to extract accurate information seems almost magical, and if you think I’m talking too much, take a look at this video in which I show how the Kalman filter determines the orientation of a free-floating body by looking at its velocity vector. Amazing!

What is it?

The Kalman filter can be used in any domain where there is uncertain information about some dynamic system, and you can make an educated guess about what the system will do next. Even if chaotic reality intervenes and affects the clear motion we assume, the Kalman filter often does a pretty good job of predicting what’s actually going to happen. And it takes advantage of correlations between crazy phenomena that you might not even think of using!

Kalman filters are ideal for continuously changing systems. They don’t take up too much memory (because they don’t need to store history other than the previous state) and are very fast, making them well suited for real-time and embedded system tasks.

In most of the articles you’ll find on Google, the math of the Kalman filter implementation looks pretty daunting. And that’s too bad, because in fact the Kalman filter is very easy
and easy to understand if you look at it from the right angle. So it makes a great topic for an article, and I’ll try to expose it with clear and understandable images and colors. You don’t have to do much, just know the basics of probability theory and matrices.

I will start with a vague example that can be solved with the Kalman filter, but if you want to go straight to pretty pictures and math, you can skip this section.

What can you do with a Kalman filter?

Let’s look at an example: you have created a little robot that can wander through the forest; in order to do the moving, it needs to know exactly where it is.

Our little robot.

Suppose our robot has a state $\vec{x_k}$, that is, just a position and a velocity vector.

Note that the state is just a list of numbers specifying the configuration of our system; it can be anything. In our example, it’s a position and speed vector, but it could also be the amount of liquid in the tank, the temperature of the car engine, the position of the user’s finger on the touchpad, or any number of objects you need to track.

Our robot also has a GPS sensor that has about 10 meters accuracy, and that’s good, but it needs to know its location more accurately in this 10 meter diameter. There are a lot of ravines and precipices in this forest, so if the robot gets a few meters wrong, it could fall off a cliff. So the GPS by itself is not enough.

We can also learn something about how a robot moves: it knows the commands given to its wheel motors, and it knows that if it’s going in one direction and nothing is in its way, in the next instant it’s very likely to move in the same direction. But, of course, it doesn’t know anything about its movement: it might get blown by the wind, its wheels might get a little boggy or roll over bumps; so the number of wheel revolutions might not accurately reflect the robot’s movement, and that prediction won’t be perfect.

The GPS sensor tells us status information, but only indirectly, with a degree of uncertainty or inaccuracy. Our prediction tells us something about how the robot is moving, but only indirectly, with a fraction of uncertainty or inaccuracy.

But if we use all the information available to us, can we get a more accurate answer than each of the approximations in isolation? Of course, the answer is yes, and that’s what the Kalman filter is for.

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