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Fitting a model to a time-dependent ensemble average is a process repeated frequently throughout biophysics. A selected ensemble-averaged observable (⟨y(t)⟩) for a given system can be predicted through the use of an estimated ensemble average, where the estimated ensemble average is created via simulated or experimental data sets. Fitting a model to this estimated ensemble average allows for estim
Previously, Berg and Purcell found an expression for the diffusion current of particles into a set of receptors in their paper Physics of Chemoreception. These receptors were assumed to be uniformly distributed on a spherical cell's surface and the receptors where idealized as circular patches. For their model, the particles' diffusion constant was the same for all points outside of the ce
12 november 2025 15:15 till 17:00 | Föreläsning Open lecture with Wrenn Yennie Lindgren, Norwegian Institute of International Affairs (NUPI) NATO states and Japan share much in common, including core values of democracy, rule of law, human rights, and free markets. They also share a mutual security provider in the United States. Yet despite many common interests across economic, political, and sec
https://www.lu.se/evenemang/new-geography-danger-japans-shifting-global-security-role-and-relations-nato - 2026-05-06
Swedish legislation does not contain an explicit regulation regarding legal guardians’ liability to pay indemnity when children cause damage. The legal guardian has a supervision duty to observe, if violating this intentionally or by either negligence or willfulness the legal guardian risks liability for damages according to public liability. In 2010, the legislature chose to clarify the responsi
14 maj 2025 13:15 till 14:45 | Föreläsning Open lecture with Patrick Meehan, University of Manchester ‘Bringing development’ to ‘peripheral’ borderland regions has become a powerful trope in development policy across South and Southeast Asia, evident in strategies like India’s Look East policy and China’s Belt and Road Initiative. This approach exemplifies what David Harvey critically terms a “dif
https://www.lu.se/evenemang/centrality-margins-borderlands-illicit-economies-and-uneven-development - 2026-05-06
A bone scan is a common method for monitoring bone metastases in patients with advanced prostate cancer. The Bone Scan Index (BSI) measures the tumor burden on the skeleton, expressed as a percentage of the total skeletal mass. Previous studies have shown that BSI is associated with survival of prostate cancer patients. The objective in this study was to investigate to what extent regional BSI mea
Context. In the era of large spectroscopic surveys, massive databases of high-quality spectra coupled with the products of the Gaia satellite provide tools to outline a new picture of our Galaxy. In this framework, an important piece of information is provided by our ability to infer stellar ages, and consequently to sketch a Galactic timeline. Aims. We aim to provide empirical relations between s
Planet–planet collisions are a common outcome of instability in systems of transiting planets close to the star, as well as occurring during in-situ formation of such planets from embryos. Previous N-body studies of instability amongst transiting planets have assumed that collisions result in perfect merging. Here, we explore the effects of implementing a more realistic collision prescription on t
Context. Streaming instability is a key mechanism in planet formation, clustering pebbles into planetesimals with the help of self-gravity. It is triggered at a particular disk location where the local volume density of solids exceeds that of the gas. After their formation, planetesimals can grow into protoplanets by feeding from other planetesimals in the birth ring as well as by accreting inward
Context. Several new multi-object spectrographs are currently planned or under construction that are capable of observing thousands of Galactic and extragalactic objects simultaneously. Aims. In this paper we present a probabilistic fibre-to-target assignment algorithm that takes spectrograph targeting constraints into account and is capable of dealing with multiple concurrent surveys. We present
The four major satellites of Jupiter, known as the Galilean moons, and Saturn's most massive satellite, Titan, are believed to have formed in a predominantly gaseous circum-planetary disk during the last stages of formation of their parent planet. Pebbles from the protoplanetary disk are blocked from flowing into the circumplanetary disk by the positive pressure gradient at the outer edge of the p
Context. The extensive stellar spectroscopic datasets that are available for studies in Galactic Archeaology thanks to, for example, the Gaia-ESO Survey, now benefit from having a significant number of targets that overlap with asteroseismology projects such as Kepler, K2, and CoRoT. Combining the measurements from spectroscopy and asteroseismology allows us to attain greater accuracy with regard
We study how close-in systems such as those detected by Kepler are affected by the dynamics of bodies in the outer system. We consider two scenarios: outer systems of giant planets potentially unstable to planet-planet scattering and wide binaries that may be capable of driving Kozai or other secular variations of outer planets' eccentricities. Dynamical excitation of planets in the outer system r
Surveys have shown that super-Earth and Neptune-mass exoplanets are more frequent than gas giants around low-mass stars, as predicted by the core accretion theory of planet formation. We report the discovery of a giant planet around the very-low-mass star GJ 3512, as determined by optical and near-infrared radial-velocity observations. The planet has a minimum mass of 0.46 Jupiter masses, very hig
Abstract The majority of airborne particles in residences, when expressed as number concentrations, are generated by the residents themselves, through combustion/thermal related activities. These particles have a considerably smaller diameter than 2.5 μm and, due to the combination of their small size, chemical composition (e.g. soot) and intermittently very high concentrations, should be regard
23 april 2026 21:30 | Konsert INTONAL 2026 Estructura Propuesta SonidoThree works on the theme of registration as an aesthetic act: Pulse, message, and step trace a movement from the measured to the experienced, from structure to perception.Teresa Burga’s Estructura Informe Corazón (de Autorretrato) (1972–2006) is based on the recording of the heartbeat as self-portrait. The heartbeat appears both
https://www.lu.se/evenemang/jakob-riis-estructura-propuesta-sonido-music-teresa-burga-and-riis-intonal-2026 - 2026-05-06
