Wednesday, March 26, 2025

 

Is your job making you happy? Insights from job satisfaction data


UGA research proposes new method to evaluate workplace conditions



University of Georgia




Sometimes at work, it’s not just a case of the Mondays. The level of dissatisfaction employees have with their job can last beyond the start of the week. New University of Georgia research has found that employers and policymakers might want to start paying attention because employee happiness contains critical economic information.

Susana Ferreira, professor of agricultural and applied economics in the UGA College of Agricultural and Environmental Sciences, used an empirical model to relate job satisfaction, wages and work environment.

Traditionally, you’d hope that workers are paid fairly for their working conditions, a premise that follows a hedonic wage model. That positive outlook relies on perfect job and labor market conditions and assumes workers are rational, fully informed of workplace conditions and can switch jobs freely.

However, this study used overall gratification to understand employees and uncover the tradeoffs between working conditions and pay — even in circumstances when job markets are rigid, and workers might feel “stuck” at their jobs.

“People who don’t get paid enough to compensate for the job risks that they face may take another job. If their working conditions are wonderful, maybe they will accept a lower wage,” said Ferreira, lead author of the study. “There should be labor mobility, but we observe that often the worst jobs are also the jobs that pay the least, especially in job markets that are very inflexible.”

Tracking down tradeoffs

Through analyzing data on nearly 35,000 European workers across jobs and sectors in 30 countries, Ferreira discovered a pattern when it came to how these workers felt about their jobs.

On average, workers facing higher risks were paid less. That’s not what you’d expect, but the job satisfaction indicators still worked well.

“People who have lower wages were much less satisfied with their jobs. People who face higher risks were less satisfied with their jobs. People who face worse conditions were less satisfied with their jobs,” Ferreira said.

But the study also revealed the price tags of facing those conditions.

Adjusted for U.S. dollars at the time of publication, the study found that on average, workers would have to be compensated with approximately $29 per hour to eliminate all the health and safety risks they perceive at work to remain satisfied with their position. The research also found that avoiding days off due to work accidents had an estimated price tag of $362 per year, and improved workplace conditions had a value of more than $12,000 per year.

“If you can figure out job satisfaction, you can estimate how much more you will have to pay your workers to accept higher risks,” Ferreira said.

Room for improvement

Ferreira says this study shows that workplace satisfaction is much more crucial than some employers give credit to. Higher pay and a safer work environment can have an immense impact on worker contentment. And happier workers can mean plenty of good things for the business itself.

“Paying attention to people’s feelings is important,” Ferreira said. “Asking workers in general about how they feel and gathering subjective well-being data contains a lot of important economic information that has tended to be ignored by economists.”

Acknowledging employee well-being in a workplace can lead to a more productive work environment that can ultimately lead to broad economic benefits.

“This study can lead to better ways of estimating and measuring environmental benefits and contributions to welfare in a way that informs policy,” she said.

This study was published in the Journal of Environmental Economics and Management and partially funded by the National Institutes of Health. Co-authors included Sara Martínez de Morentin and Amaya Erro-Garcés.

 

Study shows link between the start of the working day and time preferences




University of Seville




Those who start work earlier express more discomfort with the seasonal time change. This is the main conclusion of a study that the lecturers at the University of Santiago de Compostela (USC) and the University of Seville (US), Jorge Mira Pérez and José María Martín Olalla, have just published in the journal Chronobiology International, in which they analyse in detail the results of the public consultation organised by the European Commission in 2018 in the then 28 member states, which obtained 4 million responses.

The study shows that the rate of responses against the current regulation was higher as the latitude of the country was higher. To explain this result, Martín Olalla and Mira, who have just published a review study in  Royal Society Open Science, which has been referenced by Science magazine, compare the rates against the time change with the time of the start of work activity and show that earlier activity starts resulted in a higher rate of people against the current regulation. “The public consultation was treated as if it were a survey, highlighting the balance of responses for and against changing the clocks. We treated it as a natural experiment and studied how those who said ‘no’ (or ‘yes’) were distributed,” stresses Jorge Mira. “On average, 0.5% of the country’s population responded to the public consultation; it is too small a rate to predict the outcome of a hypothetical referendum on changing the clocks, but it is more than enough to carry out an observational study and analyse what stimuli influenced people to vote for or against the current mechanism,” stresses Martín Olalla.

The authors explain that the regulation covering the changing of the clocks aims to align the start of work with the sunrise. That is why in their calculations they use the distance between the start of work and the winter sunrise, which gives an idea of the light conditions at that time. “Nuance is key. When we use the time at which work begins we do not find significant correlations with the public consultation, but when we analyse the distance from the start time to the winter sunrise, then we do see that countries with earlier start times have higher rates against,” says Martín Olalla. “This result cannot be explained if, as usual, changing the clocks is related to time zone or geographical longitude; it only makes sense when changing the clocks is seen as a response that is physiologically modulated,” stresses Mira.

The study suggests that the current regulation acts as a compromise between those who start earlier, and therefore are more uncomfortable and would be more disadvantaged by a permanent summer time, and those who start later, who are more comfortable with the current situation but would be more disadvantaged by a permanent winter time.

 

 

 

Scientists discovered chemical oscillations in palladium nanoparticles, paving the way for recycling precious metal catalysts





University of Nottingham

Palladium growth 

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Growth and dissolution of palladium nanoparticles in a layer of liquid imaged by electron microscopy

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Credit: University of Nottingham




Scientists have for the first time filmed the real-time growth and contraction of Palladium nanoparticles, opening new avenues for utilising and recycling precious metal catalysts.

Researchers at the University of Nottingham’s School of Chemistry used transmission electron microscopy (TEM) to observe the complete lifecycle of palladium nanoparticles in a liquid environment, from nucleation through growth to dissolution, with the entire cycle repeating multiple times. This study has been published today in Nanoscale.

One of the most important applications of metal nanoparticles is in catalysis, which forms a backbone of chemical industries. Dr Jesum Alves Fernandes, an expert in the field, said: “The mechanisms of catalysis involving palladium have been hotly debated for many years, particularly as the distinction between homogeneous (in solution) and heterogeneous (on the surface of nanoparticles) catalysts becomes blurred at the nanoscale. The discovery that palladium nanoparticles can switch between these two modes can help us to develop new efficient catalysts for net-zero reactions, such as carbon dioxide reduction and ammonia synthesis. Additionally, this knowledge could help in the recycling and reuse of critical metals like palladium, whose global supplies are rapidly decreasing.”

The laws of thermodynamics cause chemical reactions, including those involving nanoparticles, to proceed in one direction. While oscillating chemical reactions are uncommon in manmade processes, they frequently occur in living organisms that exist away from thermodynamic equilibrium. Understanding these chemical oscillations could help us unravel some of nature's mysteries, including transitions from chaos to order, emergent behaviours, patterns in animal coats, and even the origins of life on Earth.

Professor Andrei Khlobystov, leads the research group at the University of Nottingham that focuses on imaging chemical reactions of individual molecules and atoms, in real time, and direct space, he says “We set out to study the formation of palladium nanoparticles in a liquid and were happy to observe the nanoparticles forming directly during TEM observation. These nanoparticles emerged from the palladium salt solution, growing larger and more structured over time. To our astonishment, once the nanoparticles reached a size of about 5 nanometres, they began to dissolve back into the solution, disappearing completely, only to undergo re-growth again.”

The nanoparticles create a complex branching pattern in a liquid pool, pulsating cyclically as they grow and dissolve. However, when the reaction is carried out in a droplet of solution contained within a carbon nanotube—serving as a miniature test tube—the lifecycle of the nanoparticles can be observed at atomic resolution. The carbon nanotube slows down the process, allowing for detailed observation of the early stages of nucleation, growth, and dissolution. This reveals a disk-like shape with crystal facets, suggesting interactions of the nanoparticles with the solvent molecules.

Dr Will Cull, a Research Fellow at the School of Chemistry, University of Nottingham, said: “The key to understanding this unexpected phenomenon lies in recognising that electron microscopy is a powerful imaging technique that can also alter the material being observed. This approach is often used to carve structures with the electron beam, but in this case, the energy of the electron beam is harnessed to break carbon-hydrogen bonds and displace valence electrons from the bromide anions in the solvent. As a result, chemical reactions are triggered while we image our sample.”

Dr Rhys Lodge, who conducted the measurements, explains: “We believe that the chemical reactions involving the solvent, activated by the electron beam, drive the reduction of palladium ions to palladium metal, as well as the oxidation of palladium metal back to palladium ions. Due to the competition between these two processes, the nanoparticles continuously grow and shrink, oscillating chemically between these two states.

This work is funded by the EPSRC Programme Grant ‘Metal atoms on surfaces and interfaces (MASI) for sustainable future’ www.masi.ac.uk which is set to develop catalyst materials for the conversion of three key molecules - carbon dioxide, hydrogen and ammonia – crucially important for economy and environment. MASI catalysts are made in an atom-efficient way to ensure sustainable use of chemical elements without depleting supplies of rare elements and making most of the earth's abundant elements, such as carbon and base metals.

The University of Nottingham is dedicated to championing green and sustainable technologies. The Zero Carbon Cluster has been recently launched in the East Midlands to accelerate the development and deployment of innovation in green industries and advanced manufacturing. 

Palladium growth [VIDEO] | 

Palladium nanotube [VIDEO] | 

 

This AI-model is more certain about uncertainty



Radboud University Nijmegen




Artificial intelligence (AI) plays a role in virtually every aspect of our lives, from self-driving cars to smart vacuum cleaners, to computer models that can predict the course of an epidemic. No matter how advanced these AI systems are, there always remains a certain degree of unpredictability about their behaviour. Thom Badings developed a new method to include this uncertainty in predictive algorithms, so that a safe solution can be achieved. His PhD defence takes place on 27 March at Radboud University.

When an AI model works well, everything seems to run effortlessly: the car reaches its destination, the drone flies without crashing, and the economic forecasts turn out to be completely correct. But in practice, systems controlled by AI run into numerous uncertainties. The drone must take birds and wind into account, and the self-driving car must be able to avoid people suddenly crossing the road and roadworks. So, how do you ensure that everything continues to run ‘effortlessly’?

Markov models

‘That is why my colleagues and I developed methods to guarantee the accuracy and reliability of complex systems with high degrees of uncertainty,’ explains Badings. ‘Many existing methods have difficulty dealing with this uncertainty. They require a lot of calculations, or they rely on restrictive assumptions, which means that the uncertainty is not properly taken into account. Our method creates a mathematical model of that uncertainty, for example based on historical data, so that an accurate prediction can be made much faster.

Badings' method is based on modelling systems in the form of Markov models, an existing category of models often used in control engineering, AI and decision theory. ‘In a Markov model, we can explicitly include uncertainty in specific parameters, for example, for the wind speed or the weight of a drone. We then plug the model of the uncertainty, such as a probability distribution over these parameters, into the Markov model. Using techniques from control engineering and computer science, we can then prove whether this model behaves safely, despite the certainty in the model. This way, you can get an exact answer to the question of what the probability is that your drone will collide with an obstacle, without having to simulate each scenario separately.

Embrace the uncertainty

‘The ultimate goal is not to eliminate uncertainty, but to embrace it. You know that everything you do involves uncertainty, but by modelling it in this way, you make it part of your analysis. The results you get, therefore, robustly take that uncertainty into account in a way that is much more complete than with existing methods.’

Badings does warn about the limits of this approach: ‘If you have a situation with many parameters, it remains costly to include all the uncertainty. You can never completely eliminate that uncertainty, so you will still have to make certain assumptions to get meaningful results. Don't assume that you can use one model to have your drone traverse every area in the world, but initially limit your model to the most likely environments.

According to Badings, it is important to use techniques from different research areas when analysing systems with AI. ‘Don't get too hung up on the results you get from an AI model like ChatGPT, but use insights from control engineering, computer science, and artificial intelligence to arrive at a robust and safe solution.' 

 

Security-relevant research in times of geopolitical polarisation – Leopoldina and DFG joint committee presents fifth report



Leopoldina



Research into pathogens or generative artificial intelligence can lead to knowledge, products or technologies which can also be used for harmful purposes (“dual use research”). In times of pandemics, wars, and intensifying system rivalries around the world, such security-relevant research is increasing in significance. This includes, for instance, the question as to how research can be protected from espionage and foreign interference while simultaneously ensuring the continuation of international scientific cooperation. The Joint Committee on the Handling of Security-Relevant Research (GA) of the German National Academy of Sciences Leopoldina and the German Research Foundation (DFG) advises the German science community in questions regarding dual use. In the committee’s 2024 progress report “Scientific Freedom and Security Interests in Times of Geopolitical Polarisation”, which is now also available in English, they describe a change within the scientific system due to increased national security interests. In line with their mandate, which has since been extended until 2030, the committee will pay additional attention to this field of tension. 

The focus of the report is on the changes taking place within the scientific system due to increased national security interests. According to the authors, the science community is on the one hand increasingly expected to conduct research in line with national security interests. On the other hand, this entails the risk of science becoming subordinate to political aims and of international scientific cooperation being constrained. With its mandate extension and a strategic new set of members, the Joint Committee is addressing the developments regarding the topic of the risks surrounding international research cooperation.

The report presents several examples of security-relevant fields of research: The Joint Committee rates research as “concerning” if abuse can directly follow from it and if potential damage is substantial. The report also includes the results of surveys conducted by the Joint Committee regarding the previous work of the Committees for Ethics in Security-Relevant Research (KEFs). According to this data, a total of 124 cases of security-relevant work were reported to and then discussed by the KEFs between 2016 and 2023. Only nine cases received wholly negative votes. The surveys among the KEFs revealed that security-relevant work of concern continues to be a rare exception in academic research, but that the KEFs also deal with other, partially overlapping security-relevant issues. 

The report also provides information about the GA’s participation in events relating to responsible handling of security-relevant research. This includes, for example, the conference “Raising Awareness and Building Competencies for Ethics of Security-Relevant Research (Dual Use) in Teaching – Theories, Methods, Good Practices” which took place in June 2023, as well as the fourth “KEF Forum”, which was held in Munich in 2024. Furthermore, the report also makes mention of future tasks and objectives of the work by the GA and the KEFs. For instance, the implementation of the GA’s recommendations for the implementation of security-relevant ethical considerations in research and teachings should be further pursued. 

Link to the progress report by the Joint Committee: https://www.security-relevant-research.org/publication-progressreport2024/

The GA, an advisory committee of the German National Academy of Sciences Leopoldina and the DFG, was established in 2015 and continuously observes the development of security-relevant research and the associated risks. The committee also identifies areas requiring action and advises the boards of the Leopoldina and the DFG in this matter. Additionally, the GA supports the establishment and the work of KEFs and has become the national point of contact for questions regarding personal responsibility in the handling of this topic. Further information about the Joint Committee: https://www.security-relevant-research.org/

The Leopoldina on Bluesky: https://bsky.app/profile/leopoldina.org 

The Leopoldina on YouTube: https://www.youtube.com/@nationalakademieleopoldina

The Leopoldina on X: www.twitter.com/leopoldina

About the German National Academy of Sciences Leopoldina
As the German National Academy of Sciences, the Leopoldina provides independent science-based policy advice on matters relevant to society. To this end, the Academy develops interdisciplinary statements based on scientific findings. In these publications, options for action are outlined; making decisions, however, is the responsibility of democratically legitimized politicians. The experts who prepare the statements work in a voluntary and unbiased manner. The Leopoldina represents the German scientific community in the international academy dialogue. This includes advising the annual summits of Heads of State and Government of the G7 and G20 countries. With around 1,700 members from more than 30 countries, the Leopoldina combines expertise from almost all research areas. Founded in 1652, it was appointed the National Academy of Sciences of Germany in 2008. The Leopoldina is committed to the common good.



About the German Research Foundation 
The German Research Foundation (DFG) is the largest research funding organisation in Germany and is the nation’s central self-governing body for science. The Foundation serves the scientific community and supports research in all its forms and disciplines. The DFG supports scientific excellence and quality through selection of the best projects in contention. They are also particularly focused on supporting international cooperation, researchers in the early stages of their careers, gender parity, and diversity in the scientific community. Additionally, the DFG engages in dialogue with the social, political, and economic sectors and supports the transfer of insight. Furthermore, the DFG advises institutions dedicated to governmental and public interests in questions of science and scientific politics.

 

Cuneiforms: new digital tool for researchers



University of Würzburg
Cuneiforms XML Text 

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From cuneiform to code: section of a Hittite cuneiform text found in Boğazköy-Hattuša in 2024 (photo and XML text).

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Credit: Daniel Schwemer / University of Wuerzburg




The UNESCO World Heritage Site of Boğazköy-Hattuša is located in the north of Turkey. It was once the capital of the Hittite Empire, a great power in the late Bronze Age around 1650 to 1200 BC.

The cuneiform tablets discovered there and in other Hittite sites represent one of the largest groups of texts from the ancient Near East. They include thousands of sources in Hittite, an early-attested Indo-European language, as well as numerous fragments in other Anatolian languages, alongside Sumerian, Akkadian, and Hurrian texts.

An innovative digital tool has been offering researchers and students online access to these historical sources since 2023: the Thesaurus Linguarum Hethaeorum Digitalis (TLHdig 0.1) which was launched on the Hethitologie-Portal Mainz platform (HPM). Ever since its initial launch, this thesaurus has become one of the digital tools that Hittitologists use every day, with more than 100,000 accesses per month.

Expansion of the Tool with Many New Options

This tool is now even more powerful: As TLHdig 0.2 it is comprising more than 98% of all published sources—approximately 22,000 XML text documents, many of which consist of multiple rejoined fragments. Currently the corpus consists of almost 400,000 transliterated lines. But that's not all: TLHdig 1.0, expected in late 2025, will offer complete coverage of all published texts.

Researchers can browse and search texts in transliteration or cuneiform and apply various filters for more complex queries. TLHdig is embedded within the infrastructure of Hethitologie-Portal Mainz and is integrated with various digital catalogue tools, media databases, and text editions.

Online Pipeline for New Text Publications

TLHdig is a community research tool. In compiling the corpus, the TLHdig team has drawn on digital and analogue resources developed by several generations of Hittitologists, including digital text edition projects on Hethitologie-Portal Mainz and the contributions of many individual scholars.

As a collaborative tool, TLHdig features an online submission pipeline for scholars publishing new Hittite cuneiform texts. Users can copy and paste their transliterations into the creator interface and follow the prompts to finalise their submissions. For further guidance, users find support in a Step-by-step Manual.

Through this dynamic approach, TLHdig will continue to expand alongside the field, ensuring it remains as up-to-date as possible, and both the quantity and quality of the data increases continuously. It thus serves as both a foundation for text editions and a valuable resource for a wide range of research questions and methodologies, including the use of innovative AI approaches.

Funding and Project Management

The Deutsche Forschungsgemeinschaft (DFG) funded the development of TLHdig. The project was led by Professor Gerfrid Müller (Mainz Academy of Sciences and Literature / University of Würzburg), Professor Doris Prechel (University of Mainz), Professor Elisabeth Rieken (University of Marburg), and Professor Daniel Schwemer (University of Würzburg).

Weblink

TLHdig on Hethitologie-Portal Mainz: https://www.hethport.uni-wuerzburg.de/TLHdig/

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https://www.hethport.uni-wuerzburg.de/TLHdig/press-release-TR-2025-03.php