Knowledge

Starlink is a satellite network providing Internet services developed by the American aerospace company SpaceX. As of June 2024, there are more than 6,000 satellites, accounting for more than half of all satellites in operation. Starlink is a megaconstellation or satellite Internet constellation, with...

What is Rapid Application Development (RAD)? Rapid Application Development (RAD) is an application development paradigm that emphasizes quick development via iterative cycles. Instead of working in a linear development process, RAD breaks it down into smaller iterations known as phases. What is special about...

1/ The Situation of the Software development in Hanoi Software development in Hanoi is experiencing a period of strong growth. The published figures were announced at the end of 2022. The IT industry in general or specifically the software sector in Vietnam always maintains...

If we discuss the topic of which technology makes business operations more convenient and efficient, Salesforce cannot be ignored. A cloud computing technology that is popular and growing strongly in recent years, bringing a positive influence to the way many businesses operate and handle....

In the cryptocurrency financial market, there are two established systems, CeFi and DeFi. CeFi came before DeFi, but DeFi was the most searched keyword. There is a lot of concern about these two concepts. What is DeFi, CeFi? What is the difference between them?...

1. Analyzing Salesforce cost for implementation  Implementing Salesforce can have 2 types of fees including installation and license costs. For Salesforce, you don’t need to pay the initial cost for installing the tool, so the cost of installation depends on the business’s deployment requirements....

According to Google Trends, searches and interest for the keyword “What is NFT” have increased sharply in 2021, even surpassing Dogecoin and Ethereum. Many people have been willing to spend millions of dollars to collect NFTs. So what is NFT and what makes it...

The world is always moving and so are the financial markets. There are always trends appearing, attracting the attention of investors. DeFi is one of the prominent trends from 2020, especially in the crypto world. Until now, its heat has cooled down, but its...

Play to earn has been one of the trending keywords from mid-2021. This trend has made the cryptocurrency market more exciting than before with the appearance of a series of game projects. What makes this model attractive? Let’s find out through the following article!...

Nowsaday, most businesses use many different types of applications to improve customer service quality and increase competitiveness. However, slow application performance can affect business operations. So how can we effectively manage application performance? What software performance management tools can we turn to to solve...

1. About AI and Digital Transformation The modern technological age has ushered in a series of innovations, with Artificial Intelligence (AI) and Digital Transformation prominently being the harbingers of change. These factors are not only redefining industries, but also redefining the way organizations operate,...

ChatGPT is an advanced Generative AI model developed by OpenAI, capable of understanding and generating human-like text. Built upon the Generative Pre-trained Transformer (GPT) architecture, ChatGPT is revolutionizing how people interact with computers—supporting everything from office productivity and content creation to customer service and...

Big Data is one of the most popular words in the IT industry today. In the digital era, Big Data is a great asset that a business can own. But this data cannot be processed, stored and analyzed using traditional tools. So, in this...

Artificial Intelligence (AI), Machine Learning (ML), and Deep Learning (DL) are three concepts that frequently appear in the digital era, yet many people still confuse them. In essence, AI is a broad concept that refers to systems capable of simulating human intelligence. Machine Learning...

Referring to new technology trends, we cannot ignore the phrase “Metaverse”. It is dubbed the next evolution of the Internet, and can bring users great experiences.. So what is the Metaverse? Do you understand it all? If you still wonder what we can experience...

About Super Apps Super apps are mobile applications that integrate multiple services in one platform, allowing users to perform many different tasks without switching between multiple applications. The term was first coined in 2010 by BlackBerry founder Mike Lazaridis, but it has gained global...

What is ERP package? This is the question that many businesses ask when they have the intention to build an internal ERP package system. In this article, we will explain for you from the basic concept to the warnings when you want to develop...

In the era of data explosion, manufacturing enterprises and smart cities require data processing solutions that are faster, more secure, and more accurate than ever before. Edge Computing—data processing at the source—combined with Digital Twin—a digital model that simulates real-world systems—is emerging as a...

Nowadays, software development is becoming increasingly complex and there are many information security threats. Keeping up with that trend, the Authentication vs Authorization mechanism was born to solve this problem, helping to improve the security of the software. 1. What is authentication? Some popular...

In the era of Industry 4.0, asset digitalization has emerged as a strategic solution for businesses and investors to optimize asset value with transparency and efficiency. The rapid development of blockchain technology has unlocked the potential to transform physical and digital assets into tradeable,...

Continuing the knowledge on “What is Big Data?“, this article will reveal some of the top technologies for big data that businesses can use. The amount of data created, collected and used globally is forecast to reach 149 zettabytes by 2024. For businesses to...

As businesses increasingly move toward digital-first models, SaaS (Software as a Service) has emerged as a popular choice thanks to its flexibility, cost-efficiency, and scalability. However, selecting the right SaaS provider is far from simple. This article outlines the most important evaluation criteria and...

2025 marks the explosive rise of artificial intelligence in daily work. From content creation, design, coding to project management – everything can now be assisted by AI. This article compiles the best AI tools suitable for office workers, marketers, and developers, helping you increase...

Multisig brings various benefits of security for transactions in the virtual currency market, but many people don’t know much about this platform. So, in this article, we will introduce and explain for you about Multisig’s information, pros and cons, its mechanism, and some exchanges...

Automation technology is a phrase that is mentioned a lot in the field of industry, production, and distribution of goods today. Automation was born to help enterprises optimize production processes, reduce costs and increase profits. So what is automation technology? What are the advantages...

When it comes to Web app or mobile application development, developers cannot ignore the Real-time updating aspect. This element uses time data to provide users with useful information, supporting users during remote work and other social activities. Real-time updating helps users update news and...

Salesforce Campaign is an interesting feature that supports business so much in various activities including Marketing and Sales for interacting with Leads, Prospects and customers. In this article, we will provide information about the Salesforce campaign for you to understand more. Let’s start. 1....

There are many people who still look for virtual currency wallet information to start their investment with coins. This article will help them explain from the concept to mechanism, and types of them. 1. What is virtual currency wallet? Its nature is a place to...

Sorry, this entry is only available in 日本語. 前回の記事で、 ブロックチェーンは３つの暗号技術を用いて不正を防いでいると説明しましたね。 参考：ブロックチェーンの不正を防ぐ3つの暗号技術 今回はその暗号技術を用いてブロックチェーン構造 がどのような構造になっているかを説明します。この記事を読めばきっとブロックチェーンという名称の由来がわかるでしょう。 １．仮想通貨はただのデータにすぎない  ブロックチェーンの構造を説明する前に、仮想通貨について触れたいと思います。本来、仮想通貨はただのデータに過ぎません。あなたが仮想通貨を誰かに送金するとき、「×時△分、○○にいくら払いました。」と台帳に記録されるだけで、その通貨は目に見えるものでも触れられるものでもありません。 このように、仮想通貨は台帳上の記録に過ぎないものですが、みんなが価値があると思うから通貨になりました。しかし、仮想通貨のようなデータが通貨として認められるためには必要な条件があります。 ”データが通貨として成り立つための３条件 送信者が誰か特定できる。 送信内容が途中で改ざんされない。 送信者が後で自分が送信したことを否定できない。 引用元：玉蔵（2017）『社会を根底から変えるシェアリングエコノミーの衝撃！仮想通貨ブロックチェーン＆プログラミング入門』株式会社ヒカルランド”  ブロックチェーン はその構造によって、３つの条件を満たすことができます。 ２．台帳が改ざんされないためのブロックチェーンの構造 （１）ブロックには前の取引情報も含まれる ブロックチェーン は前回の取引情報が次の取引情報に含まれる構造になっています。では、一郎さんからまい子さんへ送金する場合の取引記録を見てみましょう。 下記は一郎さんからまい子さんに渡されるブロックの中に含まれるものです。 前回までの取引記録のハッシュ値 取引内容「一郎⇒まい子　３ＢＴＣ」 まい子の公開鍵 一郎の署名 このように取引記録がひとつのブロックとしてまとめられて、次の取引に鎖状につながっていくことがブロックチェーンという名称の由来です。では、なぜ前回の取引記録まで次のブロックに送られるのでしょうか？ それは、ひとつのコインを改ざんして2人に送るといった「二重支払い」を防ぐためです。前回の取引記録をブロックに含めることによって、コインががどこからきたものなのかを明確にすることができます。これにより存在しないコインが送金されることを防いでいます。 これは二重支払いのような改ざんが起こってもすぐに分かるしくみです。ブロックBが改ざんされてブロックB’が作られたとしても、後に続くB’以降の全てのブロックのハッシュ値が全く違うものになる為、改ざんされてもすぐに分かるような構造になっています。 （２）改ざんを難しくするナンスの役割 それでは改ざんしたブロック以降を全て書き換えれば良いのでは？と思うでしょう。しかし、それを阻止する仕組みが存在します。それは、ナンスと呼ばれています。まず、実際の取引に使われているブロックのハッシュ値を見てましょう。 ここであることに気づきませんか？ ハッシュ値の先頭は０が並んでいますね。本来、ハッシュ化した場合、ランダムな数字が並ぶためこのようなことは起こりません。これは０が並ぶように意図的にデータに何らかの文字列を足しているのです。ここで足される文字列がナンスです。 上の図のように、ブロックをハッシュ化する際、ハッシュ値に０が並ぶまで何度もナンスの文字列を変えて計算を繰り返します。 このように適当なナンスを見つける作業をマイニングといいます。ナンスを見つけた人には台帳に書き込む権利が与えられ、報酬として12.5BTC（※）もらえる仕組みになっています。 ちなみに、マイニング（mining）の由来は、計算処理の報酬として仮想通貨が支払われることが、鉱山から金や銀を採掘するイメージと似ている為です。 マイニングはとても大変な作業ですが、報酬を得るために世界中で計算機を回して行われています。そして、ビットコインはこのマイニングからしか生まれないようになっています。マイニングはビットコインをはじめとする様々な通貨で採用されている方法です。 2019/9/5現在　1BTC＝約110万円のため12.5BTC＝約1400万円 （3）一番長いものが正式なブロックになる...

AI Agents are emerging as a new technological pillar in digital transformation, enabling enterprises to automate processes, make data-driven decisions, and enhance customer experience. However, to build effective AI Agents, businesses need professional AI Agent development services. This article will help you understand what...