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Ben van Lier

Blockchain, Cyber-Physical Systems and Cybersecurity

Geschreven door Ben van Lier - 13 mei 2016

Cyber-physical systems combine physical objects (such as smart TVs) or systems (such as autonomous cars) with integrated computing facilities and data storage. Such cyber-physical systems can be interconnected in networks, within which they can exchange and share data and information with other objects and systems. Siemens refers to this sort of network of distributed and autonomous systems as a Web of Systems.  Lees meer >>

Tags:   Blockchain
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Ben van Lier

Blockchain, Cyber-Physical Systems and Cybersecurity

Ben van Lier
13 mei 2016


Leen Blom

Help! Mijn managementinformatie is verdwenen in de cloud

Geschreven door Leen Blom - 14 april 2016

Is het opbouwen van een Data Warehouse in een traditioneel legacy applicatie-landschap al een behoorlijke uitdaging, in de wereld van Software-as-a-Service (SaaS) is die uitdaging nog groter. Daarin kennen we namelijk geen applicaties of datamodellen meer. In de SaaS-wereld ben je niet meer geïnteresseerd in de onderliggende technieken, syntax of semantiek. Tenminste, dat hoor je niet meer te zijn. Je bent tenslotte afnemer van een dienst. Lees meer >>

Tags:   Cloud computing
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Leen Blom

Help! Mijn managementinformatie is verdwenen in de cloud

Leen Blom
14 april 2016


Ben van Lier

Blockchain, distributed ledgers and learning machines

Geschreven door Ben van Lier - 08 april 2016

Over the past few decades, the concept of fault-tolerant systems has become essential for the functioning of systems such as aeroplanes. According to Wensley and Lamport et al. [1], fault tolerance is achieved by making as much use of software programs as possible. Software programs enable distributed systems to reach a consensus and run decision-making procedures that let them execute information transactions independently. Running these consensus procedures requires what are known as voter routines, which enable the efficient and effective voting needed for systems to reach a consensus and make decisions. Once made, decisions are recorded in a distributed ledger based on a protocol. Decisions have to be recorded consistently and irreversibly in distributed ledgers as one block, so that the whole can permanently function as a virtual unit, while also offering a steady overview of previous decisions.  Lees meer >>

Tags:   Blockchain
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Ben van Lier

Blockchain, distributed ledgers and learning machines

Ben van Lier
08 april 2016


Alwin Kohlbrugge

Gevolgen van macht of het ontbreken ervan

Geschreven door Alwin Kohlbrugge - 17 maart 2016

Macht heeft bij veel mensen een negatieve connotatie. Echter, het ontbreken van macht is voor veel ICT-projecten erger. En niet alleen ICT-projecten, ook in organisaties leidt het ontbreken van macht vaak tot besluiteloosheid en uitstelgedrag.  Lees meer >>

Tags:   Stakeholdermanagement
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Alwin Kohlbrugge

Gevolgen van macht of het ontbreken ervan

Alwin Kohlbrugge
17 maart 2016


Ben van Lier

Blockchain, distributed ledgers and the Paxos protocol

Geschreven door Ben van Lier - 29 februari 2016

In his book The Fourth Industrial Revolution executive chairman of the World Economic Forum Klaus Schwab wrote [1]: “The digital revolution is creating radically new approaches that revolutionize the way in which individuals and institutions engage and collaborate. For example, the blockchain, often described as a distributed ledger, is a secure protocol where a network of computers collectively verifies a transaction before it can be recorded and approved”. In Schwab‘s view this blockchain is, in essence: “a shared, programmable, cryptographically secure and therefore trusted ledger which no single user controls and which can be inspected by everyone.”  Lees meer >>

Tags:   Blockchain
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Ben van Lier

Blockchain, distributed ledgers and the Paxos protocol

Ben van Lier
29 februari 2016