Discrete-time Sinusoidal Signals & Aliasing | Signal Processing

This lecture introduces Discrete-time sinusoidal signals along with its properties, as well as the concept of aliasing.

⏲Outline
00:00​ Introduction
00:27​ Discrete-time sinusoidal signals
03:48​ Properties
10:37​ Aliasing
15:49​ Outro

MATLAB

https://www.mathworks.com/products/ma…

Instructor: Dr. Ahmad Bazzi

Subscribe: https://www.youtube.com/channel/UCgC1d4JZ1Fz4t8MWLJD464w

#matlab #data-science

What is GEEK

Buddha Community

Discrete-time Sinusoidal Signals & Aliasing | Signal Processing
 iOS App Dev

iOS App Dev

1622608260

Making Sense of Unbounded Data & Real-Time Processing Systems

Unbounded data refers to continuous, never-ending data streams with no beginning or end. They are made available over time. Anyone who wishes to act upon them can do without downloading them first.

As Martin Kleppmann stated in his famous book, unbounded data will never “complete” in any meaningful way.

“In reality, a lot of data is unbounded because it arrives gradually over time: your users produced data yesterday and today, and they will continue to produce more data tomorrow. Unless you go out of business, this process never ends, and so the dataset is never “complete” in any meaningful way.”

— Martin Kleppmann, Designing Data-Intensive Applications

Processing unbounded data requires an entirely different approach than its counterpart, batch processing. This article summarises the value of unbounded data and how you can build systems to harness the power of real-time data.

#stream-processing #software-architecture #event-driven-architecture #data-processing #data-analysis #big-data-processing #real-time-processing #data-storage

William Hill

1618837564

Signal Clone: How to Create a Messaging App Like Signal in 2021?

It is known that Signal is a free instant messaging application that is available on Android, iOS, and desktop platforms. It offers encrypted voice & video calls and text messaging features. Even though it was founded in 2010, it is named Signal in 2014. Since 2014, it has been an open-source messaging platform.

This blog is for you if you plan to enter into the mobile app industry with the Signal clone app. It will explain why you should invest in the Signal clone app and the basic features to concentrate on while developing the Signal like app

Read on to get insightful information.

Reasons to develop a real-time messaging app like Signal in 2021

Since 2020, the Signal app has become more familiar to people and it has witnessed many downloads significantly. Last year, WhatsApp came up with a new privacy policy and many concerns were raised. 

People need an alternative app to WhatsApp that should be a highly reliable and secure instant messaging app. At that time, Elon Musk (the CEO of Tesla) wrote “Use Signal” on Twitter in January 2021. These are the major reasons many people shifted towards the Signal app. 

Notably, the Signal app’s encryption protocol hides the metadata (messages) and reduces the probability of hacking. In fact, there is no chance of data leakage. Also, it conceals the location details of the users. 

Since 2016, Signal's source code is open, so it is easy to develop & launch a similar app in the market. To get your app noticed by target users, you have to focus on a business model, smooth user experience, and marketing strategy. 

Concerning data privacy, the demand for a secure messaging app is skyrocketing in 2021. Therefore, it is the right time to launch an excellent real-time messaging app. 

Essential features to include in the Signal clone app

Signal Private Messenger is known for its data privacy. Therefore, consider including the features that are incorporated in Signal. Below are the must-have features to consider while developing a modern messaging app.

  • Push notification

This feature notifies the user about important information like incoming messages, received files, missed voice/video calls. Thereby, it helps to improve user engagement. 

  • Encryption

End-to-end encryption is a vital feature for a real-time instant messaging application. This ensures that the messages (metadata) are safe and secure. However, hackers find it difficult to hack data. 

  • Geolocation

The Geolocation feature enables the users to share their current location with their friends or family members when they are outside of their homes. 

  • Temporary messages

This feature will allow the users to delete the message when the receiver has seen the message. Like, setting a time limit for the messages. It is up to the users choice to enable or disable this feature.

Apart from these, you can add the voice/video call feature. Including this feature in the messaging app is a big plus. Notably, the user base of your app increases if you incorporate sticker and emoji features. The mentioned features are the basics for the messaging app. You must try some new features if you want to stand out from your app competitors.

Bottom line

We all know that the demand for Signal arises to a great extent when WhatsApp has updated its privacy policy. So, there is no wonder that users are moving to a secure and reliable real-time messaging app. 

Signal being the privacy-focused messaging app, you can consider developing a similar app and launch it in 2021 as demand for such apps is high now. 

Signal clone script is a real-time app solution that empowers entrepreneurs to launch their own app instantly. It is a 100% customizable solution with the white-labeling ability that makes it modifiable depending on the business needs. Go ahead with the Signal clone app development

#signal clone #signal clone app #develop an app like signal #signal clone app development #signal like app

How to Install and Configure Chrony

It is essential to keep the correct time on a server. This is especially true when it comes to processing financial transactions or other vital functions which need to be handled in a specific order. Using the Network Time Protocol (or NTP), computers can synchronize their internal clock times with the internet standard reference clocks. In essence, NTP is a hierarchy of servers. The higher the Stratum number of a server, the more accurate the timing is and the lower the Stratum number of a server is, the lower the accuracy and time stability. Stratus are defined by the distance from the initial reference clock.

#tutorials #atomic clock #centos #chrony #clock #drift #internal time clock #network time protocol #ntp #offset #peers #pool.ntp.org #server time #stratum #system clock #time #time drift #timekeeping #ubuntu #utc

Discrete-time Sinusoidal Signals & Aliasing | Signal Processing

This lecture introduces Discrete-time sinusoidal signals along with its properties, as well as the concept of aliasing.

⏲Outline
00:00​ Introduction
00:27​ Discrete-time sinusoidal signals
03:48​ Properties
10:37​ Aliasing
15:49​ Outro

MATLAB

https://www.mathworks.com/products/ma…

Instructor: Dr. Ahmad Bazzi

Subscribe: https://www.youtube.com/channel/UCgC1d4JZ1Fz4t8MWLJD464w

#matlab #data-science

Hal  Sauer

Hal Sauer

1591688078

Python Datetime Tutorial: Manipulate Times, Dates, and Time Spans

Dealing with dates and times in Python can be a hassle. Thankfully, there’s a built-in way of making it easier: the Python datetime module.

datetime helps us identify and process time-related elements like dates, hours, minutes, seconds, days of the week, months, years, etc. It offers various services like managing time zones and daylight savings time. It can work with timestamp data. It can extract the day of the week, day of the month, and other date and time formats from strings.

#data science tutorials #calendar #date #dates #datetime #intermediate #python #time #time series #times #tutorial #tutorials