Sunday, October 25, 2026

 

Mindfulness and self-compassion can alleviate premenstrual symptoms




SWPS University





A kind attitude toward oneself and practicing mindfulness can improve functioning in individuals who experience severe premenstrual symptoms, according to a study by psychologists from SWPS University and Jagiellonian University.

Premenstrual syndrome (PMS) and its more severe form, premenstrual dysphoric disorder (PMDD), cause distressing psychological and physical symptoms, including mood swings, fatigue, concentration difficulties, headaches, and muscle pain. These ailments occur during the second phase of the menstrual cycle and interfere with daily functioning, affecting education, work, relationships, and overall quality of life.

Up to 30 percent of women affected

It is estimated that PMS affects approximately 20-30% of  menstruating people, while PMDD impacts 3-8%. The scale of the problem is significant, yet the psychological factors that protect against the development of these symptoms have not been thoroughly investigated.

The study, published in "Psychology and Psychotherapy: Theory, Research and Practice”, is part of a broader project analysing potential mechanisms and factors that may protect against the onset of PMS and PMDD. In a new study, Rachela Antosz-Rekucka, PhD, a psychologist at the Institute of Psychology at SWPS University, and Katarzyna Prochwicz, PhD, a professor at the Institute of Psychology of the Jagiellonian University, analysed factors that might protect against the onset of severe premenstrual symptoms. They examined variables such as the sense of coherence, mindfulness skills, and self-compassion, and investigated their relationship with past trauma, perceived stress levels, and symptoms of premenstrual disorders.

The study involved 228 participants aged 18 to 52. They were asked about their past experiences with premenstrual symptoms, and a part of the group subsequently tracked their symptoms over the course of two menstrual cycles.

Self-compassion and mindfulness help alleviate symptoms

The results suggest that higher levels of certain psychological resources can moderate the negative effect of stress and trauma on the severity of menstrual cycle-related symptoms.

Specific psychological attitudes may noticeably reduce the impact of daily stress on the severity of premenstrual symptoms. These include a kind attitude toward oneself and the acceptance of difficult moments, known as self-compassion. This approach helps women to navigate the challenging phases of their cycle more easily, even during times of intense nervous tension, says Rachela Antosz-Rekucka of SWPS University, who conducted the study as part of her doctoral research at the Jagiellonian University.

Practicing mindfulness (directing one’s attention to the present moment without judgment or worry) can also offer relief. In the context of PMS and PMDD, refraining from judging one’s own emotional reactions is particularly helpful, as it prevents the magnification of perceived discomfort. Furthermore, individuals with a strong sense of coherence cope better with rising premenstrual stress.

Past trauma and premenstrual symptoms

For individuals with a history of trauma, the ability to precisely describe their internal states and feelings, combined with the capacity to avoid judging their own emotional reactions, can help mitigate the negative impact of that trauma on premenstrual symptoms.

Psychological resources boost stress resilience

The results of the study could be significant for many people who menstruate. These findings could pave the way for modern therapeutic programs based on approaches such as mindfulness training or self-compassion-focused therapy, potentially reducing the reliance on medication.

The study suggests that more understanding, mindful, and compassionate attitude towards oneself may benefit individuals with severe premenstrual symptoms. PMS and PMDD are chronic conditions, which is why interventions such as mindfulness-based therapy, compassion-focused therapy, or strategies oriented at enhancing the sense of coherence, may help individuals navigate their conditions more effectively, and possibly increase their overall quality of life, Rachela Antosz-Rekucka emphasises.

Mindfulness in DNP education: Cultivating resilience and leadership in advanced practice




University of Pennsylvania School of Nursing





PHILADELPHIA (October 23, 2026) — A new study demonstrates that embedding short, asynchronous mindfulness practices into Doctor of Nursing Practice (DNP) curricula effectively reduces stress, combats burnout, and builds essential leadership skills. Published in Nurse Educator, the project evaluated student responses to brief, 1-to-5-minute mindfulness modules delivered through course learning management systems.

Penn Nursing’s Nancy P. Blumenthal, DNP, ACNP-BC, ISHLTF, served as senior author of the study which found:

  • Over 90% of students agreed that the embedded curriculum successfully supported their personal self-care.
  • Qualitative findings showed that mindfulness enhances cognitive flexibility, emotional intelligence, and proactive leadership during high-stress clinical and professional situations.
  • The curriculum achieved a strong Net Promoter Score (NPS) of 69.2, indicating that students overwhelmingly value the training and would recommend it to peers.

"As burgeoning health care leaders, Doctor of Nursing Practice students carry immense academic and professional loads that make initiative-taking self-care an absolute necessity rather than an afterthought," said Blumenthal. "By embedding brief, accessible mindfulness practices directly into their coursework, we can bridge the gap between theory and real-world practice—equipping nurse leaders with the emotional regulation and cognitive flexibility needed to foster healthier, more resilient environments for themselves and their teams."

Aligning with National Standards

By integrating mindfulness into advanced nursing education, the initiative directly supports core competencies outlined in the American Association of Colleges of Nursing (AACN) 2021 Essentials—specifically addressing person-centered care and leadership development. Equipping nurse leaders with practical emotional regulation tools helps foster sustainable work environments and promotes long-term workforce well-being.

The study was conducted by an interprofessional team whose members were all affiliated with Penn Nursing at the time of the project. In addition to lead author Miranda V. McPhillips, PhD, RN, now at the M. Louise Fitzpatrick College of Nursing at Villanova University, and Misol Kwon, PhD, RN, now at the School of Nursing at the University at Buffalo, the co-authors include Alexa J. Watach, PhD, RN; Mara Wai, MEd; Christina Salemo, DNP, RN, AGCNS-BC; Amy M. Sawyer, PhD, RN, FAAN; and Nancy P. Blumenthal, DNP, ACNP-BC, ISHLTF, all of Penn Nursing at the time of the study.

 

UMD researchers identify brain signals linked to cybersickness in immersive environments



Findings from a real-time brain wave study could help virtual and augmented reality designers detect and reduce dizziness, nausea and other symptoms.



University of Maryland

Cybersickness associated with the vergence-accommodation conflict

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Cybersickness associated with the vergence-accommodation conflict (VAC) is caused by a mismatch between where the eyes converge to view an object and the distance at which they focus. In the real world, these two distances generally correspond. In many VR and AR displays, however, the eyes may converge on a virtual object that appears near or far while focusing on a display set at a fixed focal plane. This mismatch is an inherent challenge for many immersive displays and is believed to contribute to visual discomfort and cybersickness.

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Credit: Olivia Mercurio






For years, developers of virtual reality (VR) and augmented reality (AR) technologies have worked to address an unwanted side effect many users experience: cybersickness, a type of motion sickness triggered by moving digital content.

In a new study published on September 25, 2026, in the journal Virtual Reality, University of Maryland scientists used electroencephalography (EEG) to identify changes in brain wave activity while participants viewed virtual content designed to induce cybersickness. The findings offer real-time signals that could help designers detect and reduce cybersickness symptoms as they occur.

“VR and AR technologies aren’t just for gaming anymore. They’re used in healthcare, teaching, job training, building design and even to plan surgeries, but their effectiveness is compromised by cybersickness,” said the study’s first author Mattie Johnson, a UMD computer science Ph.D. student. “Our results show that EEG could complement traditional symptom questionnaires and support VR and AR systems that respond to cybersickness in real time.”

The new study, led by UMD Computer Science Professor and Dean Amitabh Varshney, was conducted in collaboration with the Food and Drug Administration and Sony Group Corporation. The researchers focused on cybersickness associated with the vergence-accommodation conflict (VAC)—a mismatch between where the eyes converge to view an object and the distance at which they focus.

Cybersickness can cause nausea, dizziness, sweating, blurred vision, disorientation and more. In previous studies, 65.2% of VR users reported experiencing cybersickness, including 23.9% who reported severe symptoms. Researchers traditionally assess cybersickness with the Simulator Sickness Questionnaire (SSQ), a 16-question survey developed in 1993 to evaluate U.S. military fighter pilots’ experiences while using flight simulators. While the questionnaire remains useful, it relies on participants’ reports after an immersive experience and does not provide continuous measurements during exposure.

“A lot of people use the questionnaire in VR studies, but it’s a subjective way to measure,” said paper co-author Sujal Bista, director of the Immersive Visualization Center at the University of Maryland Institute for Health Computing (UM-IHC). “It also doesn’t allow for continuous data collection from the user. We needed a better way to measure in real time.”

In the real world, these two distances generally correspond. In many VR and AR displays, however, the eyes may converge on a virtual object that appears near or far while focusing on a display set at a fixed focal plane. This mismatch is an inherent challenge for many immersive displays and is believed to contribute to visual discomfort and cybersickness.

“We showed in an earlier study that EEG can be a reliable indicator of vection-induced cybersickness, which occurs when a virtual environment creates an illusion of self-motion while the user’s physical body remains completely still,” said Varshney, who also has a joint appointment in the University of Maryland Institute for Advanced Computer Studies. “This new study expands those findings to a second type of cybersickness and provides an important foundation for making immersive technologies more comfortable and accessible.”

The researchers recruited 40 participants and recorded their brain activity using a 64-electrode EEG system while they wore a Meta Quest 2 headset and experienced an immersive environment that induced VAC. Participants completed the SSQ after exposure so the researchers could compare self-reported symptoms with the EEG data.

The EEG recordings showed changes in activity across several brain wave frequency bands during cybersickness.

“In the frontal lobe, we found a statistically significant decrease in high brain wave frequencies during cybersickness, and in the occipital lobe we saw a statistically significant decrease in low brain wave frequencies,” Johnson explained. “These changes in what we call EEG clusters could be useful predictors of a cybersickness experience.”

For scientists, predicting cybersickness is just the first step.

“Ultimately we want to inform technology to mitigate symptoms in real time, improving user comfort and productivity over extended periods of immersion,” Johnson said.

One possible approach would involve communication between an EEG-monitoring device and a VR headset. If the EEG system detected a pattern associated with emerging cybersickness, the headset could adjust the virtual scene—for example, by bringing the displayed content closer to the headset’s focal plane and reducing the vergence-accommodation conflict.

Some headset technologies already aim to reduce cybersickness by providing multiple focal planes or otherwise addressing the vergence-accommodation mismatch. Consistent real-time physiological signals could help researchers evaluate and improve those approaches. Johnson and her co-authors also plan to investigate eye-tracking data, which could provide another objective measure while helping distinguish brain activity from eye-related artifacts in EEG recordings.

“We’d like there to be a cybersickness index that combines data from different physiological measures,” Bista said. “The SSQ still has its uses, but now we have the tools to go from asking participants how they’re feeling to asking the brain and body what’s really going on.”

###

UM-IHC researchers Barbara Brawn, Jonathan Heagerty and Sida Li also co-authored the paper.

The paper, “Quantifying and characterizing vergence-accommodation-conflict-induced cybersickness in immersive environments,” was published in Virtual Reality on Sept. 25, 2026.

This research was supported by the Center for Medical Innovations in Extended Reality (U.S. National Science Foundation Award No. 2137229). This article does not necessarily reflect the views of these organizations.

 

Airflow can cool UV-C lamps and alter in-duct disinfection estimates



Measurements in a model HVAC duct show why lamp power, air speed, and system layout must be considered together




Science Exploration Press

Figure 1. Schematic of the experimental in-duct UVGI system

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Schematic of the experimental in-duct UVGI system showing the airflow duct, cooling section, test section, lamp-array region, multiple downstream irradiance-measurement planes, measurement instrumentation, and the duct-exit plane used to report cumulative particle dose. UVGI: ultraviolet germicidal irradiation.

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Credit: © The Hui An, et al. 2026. This is an Open Access article licensed under a Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, sharing, adaptation, distribution and reproduction in any medium or format, for any purpose, even commercially, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.





Ultraviolet-C systems installed inside ventilation ducts are often evaluated by lamp rating alone. A new study suggests that this can miss a central engineering factor: airflow can cool the lamps, changing their ultraviolet output while also reducing the time airborne particles spend in the irradiated section.

Researchers at the Singapore Institute of Technology experimentally measured how low-pressure mercury UV-C lamps respond to changing duct airflow and inlet-air temperature. They then used the measured ultraviolet fields to calculate comparative particle doses and estimated microbial reductions within a test duct.

The findings, published in the Journal of Building Design and Environment, show that a higher-power 95 W lamp maintained a more stable UV-C output across the conditions tested than a 60 W lamp. The lower-power lamp was more sensitive to convective cooling caused by faster airflow and lower inlet-air temperatures.

In-duct ultraviolet germicidal irradiation, or UVGI, is used in heating, ventilation, and air-conditioning systems to expose moving air to germicidal ultraviolet radiation. Because the UV dose received by airborne particles depends on both irradiance and exposure time, airflow has two connected effects: it can cool a lamp and reduce its output, while also shortening the time particles remain in the duct.

The researchers tested 95 W and 60 W low-pressure mercury lamps in an approximately 2.7 m-long square duct. Air velocities ranged from 1.1 to 2.5 m/s, and inlet-air temperatures ranged from 14 to 22 degrees Celsius. The team measured lamp-surface temperature and 254 nm irradiance, mapped irradiance from arrays containing two to six lamps, and calculated particle-specific UV dose from the measured radiation fields.

The 95 W lamp produced mean 254 nm irradiance values of approximately 273 to 316 W/m² across the tested conditions. By comparison, the 60 W lamp ranged from about 151 to 262 W/m² and showed stronger dependence on airflow and ambient temperature.

At lower temperature conditions, the 60 W lamp operated at approximately 58% to 74% of its maximum measured output, depending on airflow velocity. At 22 degrees Celsius, its relative output increased to approximately 86% to 100%. The 95 W lamp maintained approximately 97% to 100% of its maximum measured output at the two lower airflow conditions studied.

The study also found that convective heat loss became increasingly important as airflow rose. The calculated ratio of convective to radiative external-surface heat loss increased from approximately 4.6–5.0 at the low-flow condition to approximately 7.1–7.6 at 2.5 m/s.

For six-lamp arrays operating at 1.1 m/s, the mean modeled dose was approximately 191 J/m² for the 95 W lamps and 146 J/m² for the 60 W lamps. Increasing lamp count generally increased measured irradiance and calculated dose, while lamp arrangement affected the spatial distribution of lower- and higher-dose regions.

Using published UV-susceptibility constants, the authors calculated reductions exceeding 6 log for several susceptible viral and bacterial species under selected configurations. In contrast, predicted reductions for Aspergillus spores were much smaller: below approximately 0.05 log for A. niger and generally below approximately 0.4 log for A. flavus and A. glaucus.

The microbial inactivation findings are comparative calculations, not direct measurements of viable bioaerosols. The study did not expose live airborne viruses, bacteria, or fungal spores to the tested system. Instead, it combined measured irradiance fields with published species-specific susceptibility constants in a simplified particle-transport model.

The authors caution that the calculated reductions should not be interpreted as guaranteed real-world performance. The model assumed plug flow and fixed cross-sectional particle locations, and it did not account for turbulent cross-stream mixing, deposition, particle aggregation, or other complexities of operational ventilation systems. Lamp ageing, fouling, ballast performance, duct geometry, and microbial conditions can also affect practical UVGI performance.

The findings indicate that, for the tested system, the favorable combined conditions for irradiance and particle residence time occurred at nominal airflow velocities of 1.1–1.5 m/s. This range should not be treated as a universal operating recommendation, since practical HVAC design must also account for required ventilation rates, duct size, pressure losses, fan energy, acoustic requirements, and the intended microbial-control target.

The work provides a measurement-informed framework for comparing lamp rating, airflow condition, and lamp arrangement in in-duct UVGI systems. Future studies using controlled bioaerosol experiments and more detailed particle-transport modeling will be needed to validate predicted microbial performance.

 

Supercurrent enables the reading of quantum information without destroying it



The theoretical proposal eliminates the need for auxiliary circuits to “eavesdrop” on quantum bits by transforming the system’s own electric current into a mirror of the information.





Fundação de Amparo à Pesquisa do Estado de São Paulo






 One of the fundamental challenges of quantum computing is obtaining information from a quantum bit, or qubit. Unlike a conventional bit, which can be read repeatedly without altering its content, direct measurement of a quantum system typically causes the state to collapse before it can be determined. In other words, reading the information modifies it.

A new study with support from FAPESP proposes circumventing this problem by utilizing a unique property of a certain type of qubit called an “Andreev qubit.” This qubit produces an oscillating electric supercurrent through its own quantum dynamics. This supercurrent would serve as a macroscopic indicator of the qubit’s state, enabling its reconstruction in a virtually non-destructive manner.

The study was published in the journal Physical Review B Letters and was led by José Carlos Egues, a full professor at the São Carlos Institute of Physics at the University of São Paulo (IFSC-USP) in Brazil, and Yugui Yao of the School of Physics at the Beijing Institute of Technology in China. According to the authors, this method could eliminate the need for ancillas, auxiliary qubits used in current techniques for non-destructive quantum readout.

Before delving into these dynamics, it is important to understand the context of the phenomenon. Qubits are the fundamental units of information in quantum computers. While a classical bit can only be 0 or 1, a qubit can exist in various superpositions of these two states. This property gives quantum computing some of its most powerful characteristics but also makes the information extremely vulnerable to interaction with the environment and the measurement process itself.

“In the conventional formulation of quantum mechanics, a projective measurement causes the system to assume one of the states associated with the measured quantity. Thus, if a qubit has been prepared in a certain superposition of 0 and 1, its direct measurement tends to destroy that superposition and, consequently, the information it contained,” says Egues.

To overcome this difficulty, “quantum nondemolition measurements,” or QND, were developed. In many of these protocols, the qubit’s information is transferred to an auxiliary quantum system called an ancilla. The word “ancilla” comes from Latin and means “slave” or “servant.” Today, figuratively speaking, the term is used to refer to something that serves another thing. In this case, measurements are taken on the ancilla to preserve the original qubit as much as possible.

While the procedure is effective, it requires preparing the ancillas, coupling them to the qubit, transferring the information, and performing successive measurements, which can be time-consuming. In systems with many qubits, this additional infrastructure can represent considerable experimental overhead.

“Our strategy is different. Instead of transferring the information to an auxiliary qubit, we seek to obtain it from a signal produced by the qubit under study itself,” says the researcher.

As previously mentioned, the qubit under study is an “Andreev qubit.” It is named after the Soviet physicist Alexander Andreev (1939–2023), who, in 1964, described a quantum process characteristic of the interface between normal and superconducting materials. These states, known as “Andreev states,” are produced by this process and confined to the nanoscale region separating two superconducting materials. They can be used to encode the basic states 0 and 1, as well as their superpositions.

“In the system under consideration, this region is a quantum dot – that is, a nanoscale structure in which electrons are spatially confined – formed in an indium arsenide [InAs] nanowire connected to superconducting materials on both sides. It’s in this environment that the states characterizing the Andreev qubit are formed,” Egues explains.

One property of this system is the circulation of a “supercurrent.” This is an electric current that flows without resistance. The study showed that when the qubit is in a superposition of its basic states, the supercurrent exhibits an oscillating component over time. This oscillation, produced by quantum interference between the states that comprise the superposition, carries information about the qubit’s state. “It’s precisely that property that we use to read the qubit. It’s that supercurrent that lies at the heart of our proposal,” the researcher points out.

A signature of the quantum state

Any qubit state can be geometrically represented by a point on the so-called “Bloch sphere.” Each point on the surface of this sphere corresponds to a specific superposition of the basic states 0 and 1, and the position of a point is defined by two angles. One angle indicates the proportion in which states 0 and 1 contribute to the superposition, and the other angle indicates the phase relationship between them. Therefore, knowing these two angles is equivalent to knowing the state of the qubit.

“Our study showed that this information is encoded in the supercurrent itself. The supercurrent has a constant component and a fluctuating component. The value of the constant component and the amplitude of the oscillation reveal the proportion of each state (0 and 1) in the superposition, and the moment when that oscillation begins reveals the phase relationship between them. Thus, by measuring how the current varies over time, it’s possible to reconstruct the initial state of the qubit,” Egues explains.

However, there is another important aspect to this phenomenon. In superconducting systems of this type, an electric voltage is usually necessary to cause the supercurrent to oscillate rather than remain constant over time. This is known as the “AC Josephson effect.” In the system studied, however, the current can oscillate without the application of any external voltage. “Our system generates a supercurrent that varies over time like an alternating current but without voltage. It’s the very evolution of the qubit’s state that produces that oscillation,” says Egues.

Thus, the current constitutes a macroscopic manifestation of the system’s microscopic quantum dynamics. It is precisely this bridge between the two scales that the researchers exploit to read the qubit.

The Andreev qubit is incorporated into a closed superconducting circuit through which the aforementioned supercurrent circulates. Near this circuit, a SQUID (superconducting quantum interference device), an instrument extremely sensitive to weak magnetic fields, is placed.

As the supercurrent flows through the circuit, it produces a magnetic field that varies with it. The SQUID detects these variations and uses them to determine how the current is behaving. This behavior provides information about the qubit’s state, so it is possible to reconstruct that state without directly measuring it.

Egues uses a simple analogy: “We can think of the qubit as one compass and the SQUID as another compass. The current in the circuit produces a magnetic field, and the SQUID ‘senses’ that field. Since the coupling between the two is very weak, the effect of the measuring instrument on the qubit tends to be very small.”

This issue is crucial because, in quantum physics, the measuring instrument is not a passive observer. By interacting with the system, it produces feedback that can alter what one intends to measure. The influence of the measuring device on what is being measured caused great perplexity among physicists in the early days of quantum physics. However, it is inevitable. It is, so to speak, an intrinsic characteristic of material reality. The proposed device also has feedback. However, simulations carried out in the study indicated that it can be reduced to values so small that they become irrelevant.

“Our method doesn’t eliminate the fundamental problem of quantum measurement. But it can approach the limit of a non-destructive readout and, at the same time, avoid the use of auxiliary qubits – the ancillas – employed in other non-destructive quantum measurement protocols,” Egues notes.

There is another advantage. After each measurement, there is no need to reset the qubit to its initial state. Measurements can be performed successively as the system evolves, enabling the tracking of its dynamics over time.

Within the limits of the margin of error

The researchers also sought to determine if the approach would work despite the inevitable imperfections of a real experiment. To accomplish this, they ran simulations that incorporated noise into the measurements and took into account the feedback caused by the small detection coil.

Depending on the number of measurements considered, the simulations yielded accuracies of 99.52%, 99.81%, and 99.85%. These results fall within the standard thresholds adopted in quantum error correction schemes.

The study is entirely theoretical. However, according to Egues, this does not mean that the device depends on nonexistent components or future technological advances. “All the numbers we used are realistic. In principle, this can be achieved. In fact, we used parameters from existing systems in our calculations. What doesn’t yet exist is that geometry, that setup that we proposed,” he argues.

This distinguishes the work from other theoretical proposals whose realization depends on advances in material or device fabrication. The detection of extremely small currents and magnetic fields by SQUIDs, for example, is an established technology.

The proposal thus combines two results. The first result is in fundamental physics: the prediction of an oscillating supercurrent similar to the AC Josephson effect but generated by the qubit’s own coherent evolution without an external voltage. The second result is technological: using the characteristics of this current as a signature that allows the qubit’s state to be reconstructed with minimal perturbation.

If the prediction is confirmed through experimentation, the method could provide a simpler architecture for reading Andreev qubits by eliminating the need for ancillas and successive resets. It could also exploit a promising feature of these systems by accessing microscopic quantum information through a macroscopic electric current produced by the qubit itself.

About São Paulo Research Foundation (FAPESP)

The São Paulo Research Foundation (FAPESP) is a public institution with the mission of supporting scientific research in all fields of knowledge by awarding scholarships, fellowships and grants to investigators linked with higher education and research institutions in the State of São Paulo, Brazil. FAPESP is aware that the very best research can only be done by working with the best researchers internationally. Therefore, it has established partnerships with funding agencies, higher education, private companies, and research organizations in other countries known for the quality of their research and has been encouraging scientists funded by its grants to further develop their international collaboration. You can learn more about FAPESP at www.fapesp.br/en and visit FAPESP news agency at www.agencia.fapesp.br/en to keep updated with the latest scientific breakthroughs FAPESP helps achieve through its many programs, awards and research centers. You may also subscribe to FAPESP news agency at http://agencia.fapesp.br/subscribe.