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Education and Employment

The Sticky Situation: Understanding the Impact of Slip on Baseball Performance

In 2021, Major League Baseball banned the usage of resin, and since batting averages have gone up. A group of researchers set out to reveal the science behind this.

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The world of professional baseball has long been aware of the importance of grip in pitching. However, a recent study by researchers from Japan has shed new light on the impact of slip between fingertips and the ball on pitching performance. Prior to June 3, 2021, Major League Baseball (MLB) pitchers had taken advantage of unapproved substances, like pine resin, to create a sticky situation that helped them maintain a precise grip. But what happens when the stickiness is removed?

A team of researchers from Tohoku University’s Graduate School of Engineering set out to understand this phenomenon. Using high-speed cameras, they captured six experienced pitchers throwing fastballs at approximately 130 kilometers per hour and analyzed how different baseball treatments impacted the finger-ball slip distance. The slip distance refers to the distance the fingers slip on the surface of the ball as it is wound and released.

The researchers found that the stickier the surface of the ball, the less the fingers slipped. This resulted in faster pitches with more revolutions per minute (RPM) and more directional control. In fact, when coated with rosin powder or pine resin, the slip distance was reduced by more than half to approximately 8 millimeters on average.

However, the study also revealed an unexpected result: when pitching water-treated balls, the velocity of the pitches dropped significantly compared to other conditions. This is thought to be due to the pitcher’s perception of fingertip slippage and subsequent adjustments in their pitching action.

The researchers’ findings are expected to enhance our understanding of the ball release mechanism under varying friction conditions, contributing to improved pitching performance, injury prevention for pitchers, and the development of better equipment.

In the future, the team plans to investigate changes in pitching movement resulting from different conditions through analysis of whole-body movements and muscle activity. They also aim to identify pitching techniques that maintain performance with slippery balls while reducing the risk of injury.

This study has significant implications for professional baseball and highlights the importance of understanding the physics behind the game. By optimizing grip and minimizing slip, pitchers can potentially improve their performance and reduce the risk of injury.

Communications

Artificial Intelligence Isn’t Hurting Workers—It Might Be Helping

Despite widespread fears, early research suggests AI might actually be improving some aspects of work life. A major new study examining 20 years of worker data in Germany found no signs that AI exposure is hurting job satisfaction or mental health. In fact, there s evidence that it may be subtly improving physical health especially for workers without college degrees by reducing physically demanding tasks. However, researchers caution that it s still early days.

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The relationship between artificial intelligence (AI) and worker well-being has been a topic of concern. However, a recent study suggests that AI exposure may not be causing widespread harm to mental health or job satisfaction. In fact, the data indicates that AI might even be linked to modest improvements in physical health, particularly among employees with less than a college degree.

The study, “Artificial Intelligence and the Wellbeing of Workers,” published in Nature: Scientific Reports, analyzed two decades of longitudinal data from the German Socio-Economic Panel. The researchers explored how workers in AI-exposed occupations fared compared to those in less-exposed roles.

“We find little evidence that AI adoption has undermined workers’ well-being on average,” said Professor Luca Stella, one of the study’s authors. “If anything, physical health seems to have slightly improved, likely due to declining job physical intensity and overall job risk in some of the AI-exposed occupations.”

However, the researchers also highlight reasons for caution. The analysis relies primarily on a task-based measure of AI exposure, which may not capture the full effects of AI adoption. Alternative estimates based on self-reported exposure reveal small negative effects on job and life satisfaction.

“We may simply be too early in the AI adoption curve to observe its full effects,” Stella emphasized. “AI’s impact could evolve dramatically as technologies advance, penetrate more sectors, and alter work at a deeper level.”

The study’s key findings include:

1. Modest improvements in physical health among employees with less than a college degree.
2. Little evidence of widespread harm to mental health or job satisfaction.
3. Small negative effects on job and life satisfaction reported by workers with self-reported exposure to AI.

The researchers note that the sample excludes younger workers and only covers the early phases of AI diffusion in Germany. They caution that outcomes may differ in more flexible labor markets or among younger cohorts entering increasingly AI-saturated workplaces.

“This research is an early snapshot, not the final word,” said Professor Osea Giuntella, another author of the study. “As AI adoption accelerates, continued monitoring of its broader impacts on work and health is essential.”

Ultimately, the study suggests that the impact of AI on worker well-being may be more complex than initially thought. While it is too soon to draw definitive conclusions, the research highlights the need for ongoing monitoring and analysis of AI’s effects on the workforce.

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Artificial Intelligence

“Future-Proofing Workers: How Countries Are Preparing for an AI-Dominated Job Market”

AI is revolutionizing the job landscape, prompting nations worldwide to prepare their workforces for dramatic changes. A University of Georgia study evaluated 50 countries’ national AI strategies and found significant differences in how governments prioritize education and workforce training. While many jobs could disappear in the coming decades, new careers requiring advanced AI skills are emerging. Countries like Germany and Spain are leading with early education and cultural support for AI, but few emphasize developing essential human soft skills like creativity and communication—qualities AI can’t replace.

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The article “Future-Proofing Workers: How Countries Are Preparing for an AI-Dominated Job Market” highlights the impact of artificial intelligence on the workforce and explores how different countries are preparing for this shift.

According to research from the University of Georgia, almost half of today’s jobs could vanish over the next 20 years due to the growth of AI. However, governments around the world are taking steps to help their citizens gain the skills they’ll need to thrive in an AI-dominated job market.

The study examined 50 countries’ national AI strategies, focusing on policies for education and the workforce. The researchers used six indicators to evaluate each country’s prioritization on AI workforce training and education, classifying them as giving high, medium or low priority.

Only 13 countries gave high prioritization to training the current workforce and improving AI education in schools. Eleven of those were European countries, with Mexico and Australia being the two exceptions. The United States was one of 23 countries that considered workforce training and AI education a medium priority, with a less detailed plan compared to countries that saw them as a high priority.

Some common themes emerged between countries, such as establishing or improving AI-focused programs in universities, on-the-job training, and improving AI education for K-12 students. However, few focused on vulnerable populations such as the elderly or unemployed through programs to teach them basic AI skills.

Researchers also noted that cultivating interest in AI could help students prepare for careers, with countries like Germany emphasizing creating a culture that encourages interest in AI and Spain starting to teach kids AI-related skills as early as preschool.

Developing human soft skills, such as creativity, collaboration, and communication, was highlighted as crucial to ensuring students and employees continue to have a place in the workforce. This study was published in Human Resource Development Review.

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Diabetes

HIV Epidemic Shifts: Why Awareness Campaigns Must Target the 50+ Age Group

HIV is surging among adults over 50 in sub-Saharan Africa, yet prevention and treatment campaigns still focus mainly on the young. New research reveals older adults face comparable or higher infection rates but remain largely invisible in HIV studies, which hampers progress toward global health goals. Persistent stigma, outdated perceptions, and limited education or access in rural areas worsen the situation, especially for older women.

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As the number of people living with HIV continues to rise globally, a concerning trend has emerged: the virus is increasingly affecting individuals aged 50 and above. In sub-Saharan Africa, this age group now accounts for over one-quarter of all HIV cases. Despite this shift, many prevention and treatment campaigns still focus on younger adults, neglecting the unique needs and challenges faced by older individuals.

Research conducted at the Sydney Brenner Institute for Molecular Bioscience (SBIMB) in collaboration with Wits University has shed light on the complexities surrounding HIV among older populations. The study revealed that older adults often harbor misconceptions about their susceptibility to the virus, making it harder for them to take preventive measures or seek testing.

“Perceptions on who acquires HIV are limited,” explains Dr. Luicer Olubayo, a researcher at SBIMB and lead author of the study published in The Lancet Healthy Longevity journal. “Intervention campaigns mainly targeted at the youth don’t help, as older adults believe they’re not at risk.”

Furthermore, stigma surrounding HIV remains a significant barrier to treatment among older adults, delaying diagnosis and limiting access to care. Interventions could focus on repeated testing, pre-exposure prophylaxis (PrEP), and awareness campaigns tailored to this age group.

Interestingly, the study found that age, education, gender, and where people live all affect their risk of HIV. Widowed women had the highest HIV rate (30.8%), possibly due to losing a partner to HIV, stigma, and limited power to negotiate condom use. People without formal education and those with low income also faced higher rates of HIV infection.

The study’s longitudinal data provided valuable insights into the HIV epidemic among older adults in sub-Saharan Africa over time. This information can inform interventions and support mental health and overall well-being initiatives.

As the world pushes towards achieving UNAIDS’ 95-95-95 targets by 2030, it is crucial to recognize that prevention and treatment campaigns must adapt to the shifting demographics of HIV. By targeting the 50+ age group specifically, we can address this growing epidemic effectively and ensure equitable access to care for all individuals affected by the virus.

In conclusion, as the world continues to grapple with the complexities of HIV among older populations, it is essential that awareness campaigns are tailored to meet their unique needs. Only through a concerted effort can we hope to overcome the stigma surrounding HIV and provide adequate support to those most vulnerable – the 50+ age group.

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