Sinds een maand is Dick Advocaat terug bij Feyenoord als klankbord en adviseur van trainer Robin van Persie, die worstelt in zijn eerste volledige seizoen als hoofdtrainer bij de club. In FC Rijnmond bespreken we of een langer verblijf van Advocaat bij Feyenoord en Van Persie wenselijk is.

De Body Mass Index ( BMI) is makkelijk te berekenen, maar wordt bekritiseerd omdat het niet altijd een nauwkeurige indicator is van een gezond gewicht. Dit komt doordat BMI simpelweg het gewicht deelt door de lengte in het kwadraat, zonder rekening te houden met de verhouding tussen vet en spieren of het type vet dat iemand heeft.

Dit kan bijvoorbeeld leiden tot een misleidende classificatie van voetballers als Brian Brobbey met 'overgewicht', terwijl hun lichaamsbouw voornamelijk uit spieren bestaat

Daarentegen wint de Body Roundness Index (BRI) aan populariteit. Deze index houdt rekening met de buik- en heupomtrek, wat een betere maatstaf zou kunnen zijn voor het bepalen van een gezond gewicht. Een Amerikaanse cohortstudie heeft aangetoond dat BRI een betere indicator voor mortaliteit kan zijn dan BMI. De BRI is echter minder gebruiksvriendelijk, omdat het meten van de juiste omtrek niet altijd eenvoudig is en een grafisch rekentoestel vereist is voor de berekening

Professionals, zoals obesitaschirurg Bruno Dillemans, benadrukken dat het meten van de buikomtrek al jarenlang een belangrijke factor is in de beoordeling van gezondheid. Hoewel de BRI nog niet algemeen bekend is, biedt het potentieel een nauwkeuriger beeld van iemands gezondheid dan de traditionele BMI

Body Roundness Index

Om je Body Roundness Index (BRI) te berekenen, heb je je buik- en heupomtrek nodig. De BRI-formule is complexer dan die van de BMI en kan een grafisch rekentoestel vereisen. De exacte formule is niet volledig weergegeven in de beschikbare informatie, maar het is duidelijk dat de BRI rekening houdt met de verhouding van je buik- en heupomtrek

Voor een nauwkeurige meting van je buikomtrek, meet je idealiter in het midden tussen je onderste rib en je bekken. Het is belangrijk om consistent te zijn in waar je meet, of dat nu boven, onder, of op de navel is

Omdat de BRI minder gebruiksvriendelijk is dan de BMI, kan het handig zijn om een online calculator te gebruiken die de BRI voor je kan berekenen op basis van je ingevoerde metingen.

Je kunt ook deze calculator gebruiken

Een gezonde BRI ligt tussen de 3,4 en 6,9.

Researchers working with data from the Internet Archive have discovered that a third of websites created since 2022 are AI-generated. The team of researchers—which includes people from Stanford, the Imperial College London, and the Internet Archive—published their findings online in a paper titled “The Impact of AI-Generated Text on the Internet.” The research also found that all this AI-generated text is making the web more cheery and less verbose.

Inspired by the Dead Internet Theory—the idea that much of the internet is now just bots talking back and forth—the team set out to find out how ChatGPT and its competitors had reshaped the internet since 2022. “The proliferation of AI-generated and AI-assisted text on the internet is feared to contribute to a degradation in semantic and stylistic diversity, factual accuracy, and other negative developments,” the researchers write in the paper. “We find that by mid-2025, roughly 35% of newly published websites were classified as AI-generated or AI-assisted, up from zero before ChatGPT's launch in late 2022.”

“I find the sheer speed of the AI takeover of the web quite staggering,” Jonáš Doležal, an AI researcher at Stanford and co-author of the paper, told 404 Media. “After decades of humans shaping it, a significant portion of the internet has become defined by AI in just three years. We're witnessing, in my opinion, a major transformation of the digital landscape in a fraction of the time it took to build in the first place.”

The researchers also tested six common critiques of AI-generated text. Does it lead to a shrinking of viewpoints? Does it create more disinformation as hallucinations proliferate? Does online writing feel more sanitized and cheerful? Does it frail to cite its sources? Does it create strings of words with low semantic density? Has it forced writing into a monoculture where unique voices vanish and a generic, uniform style takes hold?

To answer these questions, the researchers partnered with the Internet Archive to pull samples of websites from the 33 months between August 2022 and May 2025. “For each sampled URL, we retrieve the oldest available archived snapshot via the Wayback Machine’s CDX Server API,” the research said. “The raw HTML of each snapshot is downloaded and stored locally for subsequent processing.”

The researchers took the extracted website text and used the AI-detection software Pangram v3 to find AI-created websites. The team tested several AI-detection tools and found Pangram v3 had the highest detection rate. Once Pangram v3 had identified an AI-generated website, the researchers used that website as a sample to test their other six hypotheses. “For each hypothesis, we define a measurable signal, compute it for each monthly sample of websites, and test whether it correlates with the aggregate AI likelihood score across months,” the research said.

To test if AI was creating an internet full of falsehoods, for example, the team extracted fact based claims from the websites they’d selected and then paid human factcheckers to verify them. To figure out if AI is citing its sources, the team computed the outbound link density in AI-generated text. 

To the surprise of the researchers, only two of the six theories they tested about the effects of AI-generated text seemed true. AI was making the internet less semantically diverse and more positive overall, but it wasn’t causing a proliferation in lies or cutting out its sources.

“The most surprising result was that our Truth Decay hypothesis wasn't confirmed,” Doležal said. “It's worth noting that we were specifically looking for an increase in verifiably untrue statements, which we didn't find. But it could still be the case that AI is quietly increasing the volume of unverifiable claims, ones that can't be checked against existing fact-checking tools and infrastructure. Or it may simply be that the internet wasn't a particularly truth-adhering place to begin with.”

The researchers said they’d continue to study how AI-generated text shaped the internet. “We're now working with the Internet Archive to turn this into a continuous tool that keeps providing this signal going forward, rather than a single fixed snapshot bounded by the static nature of a paper,” Maty Bohacek, a student researcher at Stanford and one of the co-authors of the paper, told 404 Media. “We're also interested in adding more granularity: looking at which kinds of websites are most affected, broken down by category or language, and generally providing more nuance about where these impacts are landing.”

For Doležal, studies like this are critical for ensuring a useful and productive internet. “As AI-generated content spreads, the challenge is finding a role for these models that doesn’t just result in a sanitized, repetitive web,” he said. “Rather than forcing models to be perfectly compliant and agreeable, allowing them to have a more distinct personality or ‘friction’ might help them act as a creative partner rather than a replacement for human voice.”

In Mali vinden voor het eerst in jaren gecoördineerde aanvallen plaats van separatisten en de gewapende jihadistische groepering JNIM, nadat zij in 2025 een samenwerkingsverband sloten. De minister van Defensie kwam om, en het is onduidelijk waar junta-leider Assimi Goïta zich bevindt.

Willem-Alexander vierde Koningsdag in Dokkum, zag onze tv-recensent, waar hij dankbaar lachte en zwaaide en handjes schudde. Zou de koning zelf wel eens de beelden terugkijken, om zijn dankbare glimlach te perfectioneren?

Pa is a cheeky and playful person. He taught me how to joke, negotiate, heckle. His warmth is his immeasurable wealth

My grandfather, who I have always called Pa, is dying. He grew up working class in the north of England and went on to have a spectacular career, life and family.

Many of my friends have inherited tens of thousands of dollars when their grandparents have passed, often tied up in big suburban houses. This is part of the new phenomenon of intergenerational wealth. Rather than the “bank of mum and dad”, the “bank of grandma and grandpa” is how many young couples are now getting into housing. But many of the same friends seldom saw their grandparents or felt they couldn’t fully be themselves in front of them. And the spectacle of inheritance feels meaningless alongside real connection.

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