Noah  Rowe

Noah Rowe

1595974380

Creating a Unique and Beautiful Presentation

“A great presentation gives smart ideas an advantage”

Image for post

I was interning with an AI/ML startup — Rises Analytics Solutions Pvt Ltd, in my hometown when the CEO of the company got invited by a college for a presentation of the topic, AI vs COVID-19, for their students. Since I had just joined the firm for internship I was assigned to make that presentation, which was a great experience in itself and got me to learn a lot.

So first of all let us know what exactly is a presentation.

A presentation is, typically a demonstration, introduction, lecture meant to inform, persuade, inspire or to present a new idea or product it is basically visual storytelling. So while narrating a story you have a certain sequence of events. Not necessarily but a story has a few elements without which it seems incomplete, like a Point of view, Perspective, Morale and many more things. These are all relevant in a presentation too, you need to slowly build up the story and main topic of the presentation.

What have I done ?

What have I done, why am I sharing my experience about a normal presentation. Well this was not a normal presentation, I made the whole presentation in R programming Language using one of it’s javascript libraries — reveal.js, an open source HTML presentation framework. It’s a tool that enables anyone with a web browser to create fully-featured and beautiful presentations. Presentations made with reveal js are built on open web technologies.

To create a reveal.js presentation from R Markdown you specify the revealjs_presentation output format in the front-matter of your document.

Image for post

For more details and information, check out reveal.js

You can create a slide show broken up into sections by using the # and ## heading tags (you can also create a new slide without a header using a horizontal rule (----). Here is the starting code :

---
title: "AI against COVID-19"
author: "Name of the Author"
date: 24-04-2020
output:
  revealjs::revealjs_presentation:
    theme: night
    highlight: espresso
    center: true
    transition: concave
---

Who was the target audience here ?

It was a presentation for engineering students interested in AI,ML and NLP . Mainly students with majors in Computer Science and Information Technology.

Why did I choose R and not any other platforms like Microsoft Powerpoint Presentation ?

I am interested in Data Science and for that I am learning the R Language, Since the audience were engineering college students and interested in programming, I was asked to use an open source software for making the presentation as it would make a lasting impression about the company and students would love a different approach to make a presentation.

How did I make the presentation, which was appreciated by many participating students ?

Coming back to the storyline of presentation topic — COVID-19, sequence of my story was

#programming #design #technology #learning #presentations #deep learning

What is GEEK

Buddha Community

Creating a Unique and Beautiful Presentation
Harry Patel

Harry Patel

1614145832

A Complete Process to Create an App in 2021

It’s 2021, everything is getting replaced by a technologically emerged ecosystem, and mobile apps are one of the best examples to convey this message.

Though bypassing times, the development structure of mobile app has also been changed, but if you still follow the same process to create a mobile app for your business, then you are losing a ton of opportunities by not giving top-notch mobile experience to your users, which your competitors are doing.

You are about to lose potential existing customers you have, so what’s the ideal solution to build a successful mobile app in 2021?

This article will discuss how to build a mobile app in 2021 to help out many small businesses, startups & entrepreneurs by simplifying the mobile app development process for their business.

The first thing is to EVALUATE your mobile app IDEA means how your mobile app will change your target audience’s life and why your mobile app only can be the solution to their problem.

Now you have proposed a solution to a specific audience group, now start to think about the mobile app functionalities, the features would be in it, and simple to understand user interface with impressive UI designs.

From designing to development, everything is covered at this point; now, focus on a prelaunch marketing plan to create hype for your mobile app’s targeted audience, which will help you score initial downloads.

Boom, you are about to cross a particular download to generate a specific revenue through your mobile app.

#create an app in 2021 #process to create an app in 2021 #a complete process to create an app in 2021 #complete process to create an app in 2021 #process to create an app #complete process to create an app

Best Beauty Salon App Development Company

Do you want to build a superior beauty salon mobile app for your business? Then AppClues Infotech is a professional mobile app development company that works with a hair salon, Spa, and other businesses in the beauty industry.

Being the premier beauty salon mobile app development company we render quality solutions by making use of innovative thoughts. Our accomplished techies are adept at designing the feasible solutions that are affordable and cost-effective.

For more info:
Call: +1-978-309-9910
Email: info@appcluesinfotech.com

#how to build a mobile app for beauty salon #beauty salon app development company #best beauty salon app development company #top beauty salon app development company #create a beauty salon mobile app

Noah  Rowe

Noah Rowe

1595974380

Creating a Unique and Beautiful Presentation

“A great presentation gives smart ideas an advantage”

Image for post

I was interning with an AI/ML startup — Rises Analytics Solutions Pvt Ltd, in my hometown when the CEO of the company got invited by a college for a presentation of the topic, AI vs COVID-19, for their students. Since I had just joined the firm for internship I was assigned to make that presentation, which was a great experience in itself and got me to learn a lot.

So first of all let us know what exactly is a presentation.

A presentation is, typically a demonstration, introduction, lecture meant to inform, persuade, inspire or to present a new idea or product it is basically visual storytelling. So while narrating a story you have a certain sequence of events. Not necessarily but a story has a few elements without which it seems incomplete, like a Point of view, Perspective, Morale and many more things. These are all relevant in a presentation too, you need to slowly build up the story and main topic of the presentation.

What have I done ?

What have I done, why am I sharing my experience about a normal presentation. Well this was not a normal presentation, I made the whole presentation in R programming Language using one of it’s javascript libraries — reveal.js, an open source HTML presentation framework. It’s a tool that enables anyone with a web browser to create fully-featured and beautiful presentations. Presentations made with reveal js are built on open web technologies.

To create a reveal.js presentation from R Markdown you specify the revealjs_presentation output format in the front-matter of your document.

Image for post

For more details and information, check out reveal.js

You can create a slide show broken up into sections by using the # and ## heading tags (you can also create a new slide without a header using a horizontal rule (----). Here is the starting code :

---
title: "AI against COVID-19"
author: "Name of the Author"
date: 24-04-2020
output:
  revealjs::revealjs_presentation:
    theme: night
    highlight: espresso
    center: true
    transition: concave
---

Who was the target audience here ?

It was a presentation for engineering students interested in AI,ML and NLP . Mainly students with majors in Computer Science and Information Technology.

Why did I choose R and not any other platforms like Microsoft Powerpoint Presentation ?

I am interested in Data Science and for that I am learning the R Language, Since the audience were engineering college students and interested in programming, I was asked to use an open source software for making the presentation as it would make a lasting impression about the company and students would love a different approach to make a presentation.

How did I make the presentation, which was appreciated by many participating students ?

Coming back to the storyline of presentation topic — COVID-19, sequence of my story was

#programming #design #technology #learning #presentations #deep learning

The on-demand beauty service app is definitely a win-win for your business

Who doesn’t love to groom themselves? Almost all would love to. Now, people can avail of the beauty services right at the confines of their homes. As everything has become available to our doorsteps, why not beauty services? Yes, the beautician on-demand services have become one of the favorite on-demand services among users. If you are keen on knowing more about the beauty services app, here you go!

Let us first go through the working pattern of the on-demand beauty services app.

Step 1- Users will download your app and fill out the necessary information to access the app.

Step 2- Once users complete the first step of registration, users will land on the homepage of your app.

Step 3- The app has a list of beauty service providers with which users can choose their favorite beauticians.

Step 4- Users will request for the service and the service provider will confirm the request based on their availability.

Step 5- Once the service provider confirms the request, users will make the payment.

Step 6- The app generates the estimated time of arrival once the user’s request is confirmed.

Step 7- The service provider will reach the user’s location and will complete the service.

Among the several on-demand beauty apps, the Uber like app for beauty is gaining prominence among users with its ravishing features. Let us know the features that give an extraordinary user experience.

Schedule appointments- Users can avail of the beauty services at their convenient date by scheduling the appointment.

Rate estimator- Users can get to know the rate of their beauty services once they enter the type of service and location in the app. The app will generate the fare of the service.

Availability toggle- The service providers can provide services to users according to their convenience. The service provider can indicate whether he/she is available to take the service by moving the toggle button accordingly.

Conclusion

Summing up, the on-demand beauty app development will be the fortune cookie of your business as you can earn revenue and users coherently.

#uber for beauty service app #on-demand beauty app development #on-demand beauty service app development #on-demand beauty service app

Erstellen Sie Ihre eigene Kryptowährungs-Blockchain in Python

Kryptowährung ist eine dezentralisierte digitale Währung, die Verschlüsselungstechniken verwendet, um die Erzeugung von Währungseinheiten zu regulieren und den Geldtransfer zu überprüfen. Anonymität, Dezentralisierung und Sicherheit gehören zu seinen Hauptmerkmalen. Kryptowährung wird von keiner zentralisierten Behörde, Regierung oder Bank reguliert oder verfolgt.

Blockchain, ein dezentralisiertes Peer-to-Peer (P2P)-Netzwerk, das aus Datenblöcken besteht, ist ein wesentlicher Bestandteil der Kryptowährung. Diese Blöcke speichern chronologisch Informationen über Transaktionen und halten sich an ein Protokoll für die Kommunikation zwischen Knoten und die Validierung neuer Blöcke. Die in Blöcken aufgezeichneten Daten können nicht geändert werden, ohne dass alle nachfolgenden Blöcke geändert werden.

In diesem Artikel erklären wir, wie Sie mit der Programmiersprache Python eine einfache Blockchain erstellen können.

Hier ist die grundlegende Blaupause der Python-Klasse, die wir zum Erstellen der Blockchain verwenden:

class Block(object):
    def __init__():
        pass
    #initial structure of the block class 
    def compute_hash():
        pass
    #producing the cryptographic hash of each block 
  class BlockChain(object):
    def __init__(self):
    #building the chain
    def build_genesis(self):
        pass
    #creating the initial block
    def build_block(self, proof_number, previous_hash):
        pass
    #builds new block and adds to the chain
   @staticmethod
    def confirm_validity(block, previous_block):
        pass
    #checks whether the blockchain is valid
    def get_data(self, sender, receiver, amount):
        pass
    # declares data of transactions
    @staticmethod
    def proof_of_work(last_proof):
        pass
    #adds to the security of the blockchain
    @property
    def latest_block(self):
        pass
    #returns the last block in the chain

Lassen Sie uns nun erklären, wie die Blockchain-Klasse funktioniert.

Ausgangsstruktur der Blockklasse

Hier ist der Code für unsere anfängliche Blockklasse:

import hashlib
import time
class Block(object):
    def __init__(self, index, proof_number, previous_hash, data, timestamp=None):
        self.index = index
        self.proof_number = proof_number
        self.previous_hash = previous_hash
        self.data = data
        self.timestamp = timestamp or time.time()
    @property
    def compute_hash(self):
        string_block = "{}{}{}{}{}".format(self.index, self.proof_number, self.previous_hash, self.data, self.timestamp)
        return hashlib.sha256(string_block.encode()).hexdigest()

Wie Sie oben sehen können, nimmt der Klassenkonstruktor oder die Initiationsmethode ( init ()) die folgenden Parameter an:

self— Wie jede andere Python-Klasse wird dieser Parameter verwendet, um auf die Klasse selbst zu verweisen. Auf jede Variable, die der Klasse zugeordnet ist, kann über sie zugegriffen werden.

index — Es wird verwendet, um die Position eines Blocks innerhalb der Blockchain zu verfolgen.

previous_hash — Es wurde verwendet, um auf den Hash des vorherigen Blocks innerhalb der Blockchain zu verweisen.

data—it gibt Details zu den getätigten Transaktionen an, zum Beispiel den gekauften Betrag.

timestamp—it fügt einen Zeitstempel für alle durchgeführten Transaktionen ein.

Die zweite Methode in der Klasse, compute_hash , wird verwendet, um den kryptografischen Hash jedes Blocks basierend auf den obigen Werten zu erzeugen.

Wie Sie sehen können, haben wir den SHA-256-Algorithmus in das Kryptowährungs-Blockchain-Projekt importiert, um die Hashes der Blöcke zu erhalten.

Sobald die Werte im Hashing-Modul platziert wurden, gibt der Algorithmus einen 256-Bit-String zurück, der den Inhalt des Blocks angibt.

Das ist es, was der Blockchain Unveränderlichkeit verleiht. Da jeder Block durch einen Hash repräsentiert wird, der aus dem Hash des vorherigen Blocks berechnet wird, führt die Beschädigung eines Blocks in der Kette dazu, dass die anderen Blöcke ungültige Hashes haben, was zum Bruch des gesamten Blockchain-Netzwerks führt.

Aufbau der Kette

Das ganze Konzept einer Blockchain basiert darauf, dass die Blöcke aneinander „verkettet“ sind. Jetzt erstellen wir eine Blockchain-Klasse, die die entscheidende Rolle bei der Verwaltung der gesamten Kette spielt.

Es behält die Transaktionsdaten bei und enthält andere Hilfsmethoden zum Vervollständigen verschiedener Rollen, z. B. das Hinzufügen neuer Blöcke.

Sprechen wir über die Hilfsmethoden.

Hinzufügen der Konstruktormethode

Hier ist der Code:

class BlockChain(object):
    def __init__(self):
        self.chain = []
        self.current_data = []
        self.nodes = set()
        self.build_genesis()

Die Konstruktormethode init () instanziiert die Blockchain.

Hier sind die Rollen seiner Attribute:

self.chain — Diese Variable speichert alle Blöcke.

self.current_data — Diese Variable speichert Informationen über die Transaktionen im Block.

self.build_genesis() — Diese Methode wird verwendet, um den Anfangsblock in der Kette zu erstellen.

Aufbau des Genesis-Blocks

Die build_genesis()Methode wird verwendet, um den Anfangsblock in der Kette zu erstellen, dh einen Block ohne Vorgänger. Der Genesis-Block ist der Anfang der Blockchain.

Um es zu erstellen, rufen wir die build_block()Methode auf und geben ihr einige Standardwerte. Die Parameter proof_numberund previous_hasherhalten beide den Wert Null, Sie können ihnen jedoch jeden beliebigen Wert zuweisen.

Hier ist der Code:

def build_genesis(self):
        self.build_block(proof_number=0, previous_hash=0)
 def build_block(self, proof_number, previous_hash):
        block = Block(
            index=len(self.chain),
            proof_number=proof_number,
            previous_hash=previous_hash,
            data=self.current_data
        )
        self.current_data = []  
        self.chain.append(block)
        return block

Bestätigung der Gültigkeit der Blockchain

Die confirm_validityMethode ist entscheidend, um die Integrität der Blockchain zu überprüfen und sicherzustellen, dass Inkonsistenzen fehlen.

Wie bereits erwähnt, sind Hashes von entscheidender Bedeutung für die Realisierung der Sicherheit der Kryptowährungs-Blockchain, da jede geringfügige Änderung an einem Objekt zur Erstellung eines völlig anderen Hashs führt.

Somit verwendet das confirm_validityVerfahren eine Reihe von if-Anweisungen, um zu beurteilen, ob der Hash jedes Blocks kompromittiert wurde.

Darüber hinaus vergleicht es auch die Hash-Werte von jeweils zwei aufeinanderfolgenden Blöcken, um Anomalien zu identifizieren. Wenn die Kette richtig funktioniert, gibt sie true zurück; Andernfalls wird false zurückgegeben.

Hier ist der Code:

def confirm_validity(block, previous_block):
        if previous_block.index + 1 != block.index:
            return False
        elif previous_block.compute_hash != block.previous_hash:
            return False
        elif block.timestamp <= previous_block.timestamp:
            return False
        return True

Deklarieren von Transaktionsdaten

Die get_dataMethode ist wichtig, um die Daten von Transaktionen in einem Block zu deklarieren. Diese Methode verwendet drei Parameter (Absenderinformationen, Empfängerinformationen und Betrag) und fügt die Transaktionsdaten zur Liste self.current_data hinzu.

Hier ist der Code:

def get_data(self, sender, receiver, amount):
        self.current_data.append({
            'sender': sender,
            'receiver': receiver,
            'amount': amount
        })
        return True

Bewirken des Arbeitsnachweises

In der Blockchain-Technologie bezieht sich Proof of Work (PoW) auf die Komplexität, die mit dem Mining oder der Generierung neuer Blöcke auf der Blockchain verbunden ist.

Zum Beispiel kann das PoW implementiert werden, indem eine Zahl identifiziert wird, die ein Problem löst, wenn ein Benutzer eine Rechenarbeit abschließt. Jeder im Blockchain-Netzwerk sollte den Zahlenkomplex identifizieren, aber leicht zu überprüfen finden – dies ist das Hauptkonzept von PoW.

Auf diese Weise verhindert es Spam und gefährdet die Integrität des Netzwerks.

In diesem Artikel veranschaulichen wir, wie Sie einen Proof of Work-Algorithmus in ein Blockchain-Kryptowährungsprojekt einbinden.

Abschluss mit dem letzten Block

Schließlich wird die Hilfsmethode Latest_block() verwendet, um den letzten Block im Netzwerk abzurufen, der tatsächlich der aktuelle Block ist.

Hier ist der Code:

def latest_block(self):
        return self.chain[-1]

Implementieren von Blockchain-Mining

Das ist jetzt der spannendste Abschnitt!

Anfänglich werden die Transaktionen in einer Liste nicht verifizierter Transaktionen geführt. Mining bezieht sich auf den Prozess, die ungeprüften Transaktionen in einen Block zu legen und das PoW-Problem zu lösen. Es kann als die Rechenarbeit bezeichnet werden, die bei der Überprüfung der Transaktionen beteiligt ist.

Wenn alles richtig herausgefunden wurde, wird ein Block erstellt oder abgebaut und mit den anderen in der Blockchain zusammengefügt. Wenn Benutzer einen Block erfolgreich abgebaut haben, werden sie oft dafür belohnt, dass sie ihre Computerressourcen zur Lösung des PoW-Problems verwenden.

Hier ist die Mining-Methode in diesem einfachen Kryptowährungs-Blockchain-Projekt:

def block_mining(self, details_miner):
            self.get_data(
            sender="0", #it implies that this node has created a new block
            receiver=details_miner,
            quantity=1, #creating a new block (or identifying the proof number) is awarded with 1
        )
        last_block = self.latest_block
        last_proof_number = last_block.proof_number
        proof_number = self.proof_of_work(last_proof_number)
        last_hash = last_block.compute_hash
        block = self.build_block(proof_number, last_hash)
        return vars(block)

Zusammenfassung

Hier ist der gesamte Code für unsere Krypto-Blockchain-Klasse in Python:

import hashlib
import time
class Block(object):
    def __init__(self, index, proof_number, previous_hash, data, timestamp=None):
        self.index = index
        self.proof_number = proof_number
        self.previous_hash = previous_hash
        self.data = data
        self.timestamp = timestamp or time.time()
    @property
    def compute_hash(self):
        string_block = "{}{}{}{}{}".format(self.index, self.proof_number, self.previous_hash, self.data, self.timestamp)
        return hashlib.sha256(string_block.encode()).hexdigest()
    def __repr__(self):
        return "{} - {} - {} - {} - {}".format(self.index, self.proof_number, self.previous_hash, self.data, self.timestamp)
class BlockChain(object):
    def __init__(self):
        self.chain = []
        self.current_data = []
        self.nodes = set()
        self.build_genesis()
    def build_genesis(self):
        self.build_block(proof_number=0, previous_hash=0)
    def build_block(self, proof_number, previous_hash):
        block = Block(
            index=len(self.chain),
            proof_number=proof_number,
            previous_hash=previous_hash,
            data=self.current_data
        )
        self.current_data = []  
        self.chain.append(block)
        return block
    @staticmethod
    def confirm_validity(block, previous_block):
        if previous_block.index + 1 != block.index:
            return False
        elif previous_block.compute_hash != block.previous_hash:
            return False
        elif block.timestamp <= previous_block.timestamp:
            return False
        return True
    def get_data(self, sender, receiver, amount):
        self.current_data.append({
            'sender': sender,
            'receiver': receiver,
            'amount': amount
        })
        return True        
    @staticmethod
    def proof_of_work(last_proof):
        pass
    @property
    def latest_block(self):
        return self.chain[-1]
    def chain_validity(self):
        pass        
    def block_mining(self, details_miner):       
        self.get_data(
            sender="0", #it implies that this node has created a new block
            receiver=details_miner,
            quantity=1, #creating a new block (or identifying the proof number) is awared with 1
        )
        last_block = self.latest_block
        last_proof_number = last_block.proof_number
        proof_number = self.proof_of_work(last_proof_number)
        last_hash = last_block.compute_hash
        block = self.build_block(proof_number, last_hash)
        return vars(block)  
    def create_node(self, address):
        self.nodes.add(address)
        return True
    @staticmethod
    def get_block_object(block_data):        
        return Block(
            block_data['index'],
            block_data['proof_number'],
            block_data['previous_hash'],
            block_data['data'],
            timestamp=block_data['timestamp']
        )
blockchain = BlockChain()
print("GET READY MINING ABOUT TO START")
print(blockchain.chain)
last_block = blockchain.latest_block
last_proof_number = last_block.proof_number
proof_number = blockchain.proof_of_work(last_proof_number)
blockchain.get_data(
    sender="0", #this means that this node has constructed another block
    receiver="LiveEdu.tv", 
    amount=1, #building a new block (or figuring out the proof number) is awarded with 1
)
last_hash = last_block.compute_hash
block = blockchain.build_block(proof_number, last_hash)
print("WOW, MINING HAS BEEN SUCCESSFUL!")
print(blockchain.chain)

Lassen Sie uns nun versuchen, unseren Code auszuführen, um zu sehen, ob wir einige digitale Münzen generieren können ...

Wow, es hat funktioniert!

Abschluss

Das ist es!

Wir hoffen, dass dieser Artikel Ihnen geholfen hat, die zugrunde liegende Technologie zu verstehen, die Kryptowährungen wie Bitcoin und Ethereum antreibt.

Wir haben gerade die Grundideen veranschaulicht, um Ihre Füße in der innovativen Blockchain-Technologie nass zu machen. Das obige Projekt kann noch verbessert werden, indem andere Funktionen integriert werden, um es nützlicher und robuster zu machen.