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Silicon Data Creates First-of-Its-Kind Index for AI Chips

Silicon Data Creates First-of-Its-Kind Index for AI Chips

Bloomberg3 days ago

Silicon Data, a market-intelligence firm that focuses on the cost of graphics processing units, created what it says is the first daily index to track the specialized chips vital to powering artificial intelligence.
The company's Silicon Data H100 Rental Index tracks the hourly cost of renting a GPU, according to founder and Chief Executive Officer Carmen Li.

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ADHD, Obesity Link May Depend on Where You Live
ADHD, Obesity Link May Depend on Where You Live

Medscape

time33 minutes ago

  • Medscape

ADHD, Obesity Link May Depend on Where You Live

The well-documented link between attention-deficit/hyperactivity disorder (ADHD) and obesity in both children and adults has typically been attributed to individual traits and behaviors, with limited attention paid to environmental and social factors. However, a new study challenged this perspective, proposing that ADHD may contribute to obesity by reducing physical activity — a connection shaped by the urban environment in which a person lives. 'Our research reveals a surprising urban advantage: As cities grow, both obesity and ADHD rates decrease proportionally,' first author Tian Gan, a PhD student at the Center for Urban Science and Progress, NYU Tandon School of Engineering in Brooklyn, New York, said in a news release. Larger cities may offer 'protective factors against these interconnected health challenges,' Gan added, citing access to better mental health care, education, and opportunities for recreation and physical activity. The study was published online in PLOS Complex Systems . Urban Impact While impulsivity — a core ADHD trait — has long been suspected to contribute to weight gain through poor food choices and reduced physical activity, this new study highlighted how an individual's urban environment can either amplify or dampen those risks. Researchers analyzed public health data from 915 cities in the United States using 'urban scaling' methods, which describe how features of cities change with population size. They observed that both obesity and ADHD prevalence decrease 'sublinearly' with population — meaning that as cities grow, the per capita prevalence of these conditions declines. At the same time, access to mental health care and higher education rises 'superlinearly,' growing faster than the population. In other words, larger cities seem to offer not just more services, but disproportionately more support for conditions linked to impulsivity, the authors theorized. But city size alone doesn't tell the whole story. Using advanced causal discovery methods, the researchers mapped a network of interrelated variables. ADHD prevalence was linked to higher physical inactivity, which in turn increased obesity. Access to mental health care helped reduce inactivity and indirectly lowered obesity risk. Higher prevalence of college education correlated with better mental health access and more physical activity. This causal map revealed a dynamic system in which impulsivity, health behaviors, and urban infrastructure interact — suggesting that city environments can either reinforce or weaken these effects. The link between ADHD and obesity was stronger in cities with fewer opportunities for physical activity or greater food insecurity and weaker in cities with better access to mental health care and higher education levels, they explained. To validate their findings, the researchers examined individual-level data from the National Survey of Children's Health, which included 19,333 US children. This analysis confirmed the city-level data: Children with more severe ADHD were more likely to be obese, especially when physical activity and household education were low. Taken together, the findings reinforce evidence that ADHD contributes to obesity and point to the urban environment as a potentially modifiable target for intervention, the authors said. 'These findings underscore the importance of city-level interventions in mitigating the impact of impulsivity disorders on the obesity epidemic,' Maurizio Porfiri, PhD, who heads the Center for Urban Science and Progress at NYU Tandon School of Engineering, added in the news release.

20 questions to ask a travel agency seller
20 questions to ask a travel agency seller

Travel Weekly

time38 minutes ago

  • Travel Weekly

20 questions to ask a travel agency seller

Mark Pestronk Q: There is another agency in my community that I want to acquire. With my attorney's help, I have already drafted a nonbinding letter of intent with the key business terms, which I expect the prospective seller to sign. I have also reviewed the agency's financials, tax returns and key contracts. Now, I need to have my attorney draft the actual purchase agreement. To enable my attorney to do the best job, what information do I need to ask the seller for now? A: Here are 20 questions for the seller that will help your attorney zero in on all the legal issues and draft a good agreement: 1. What is the agency's full legal name, and where is it incorporated or organized? 2. What are the owners' full legal names, and how much does each own? 3. Is there an agreement among the owners, and if so, what does it provide for? 4. Are the owners related to each other? 5. Who are the agency's officers, directors or managing members? 6. Are there any other companies that are under the same or partly the same ownership? 7. Are there any nontravel-related lines of business within the company? 8. Does the agency have any debts or liens on its assets? 9. Does the agency have any employment or IC agreements that can't be terminated at will? 10. Does the agency have an ARC appointment? 11. Does the agency have a GDS contract, and if so, when does it expire? 12. Does the agency have an office lease, and if so, when does it expire and how much is the security deposit? 13. What other contracts does the agency have that cannot be terminated in 30 days or fewer? 14. Does the agency hold client deposits, and if so, how much are they? 15. Are there any future bookings that will require a buyer to pay out of its own funds (e.g., cruise group deposits paid in advance of collecting from clients)? 16. Which key employees will be retained, for how long, for what compensation, and what duties will they have? 17. Is there any threatened or actual litigation, and if so, what are the details? 18. Are there any other obligations not in the ordinary course of business? 19. Why does the owner want to sell? 20. When would the owner like to close the transaction? Once the agreement is drafted and is acceptable to the seller, you will need to get lots more information to add as exhibits to the agreement, such as lists of tangible assets, contracts, employees, ICs, top clients, top suppliers, client receivables and accrued vacation and other pay. You will also need to add financial statements, along with a warranty that the financials are correct. Finally, in the typical agency acquisition, commissions that are unpaid as of closing will often be automatically deposited into the seller's bank account. If the purchase agreement provides that you get any of this money, you need to list those commissions plus a commitment for the seller to remit them to you after closing.

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