Am 08. und 09. April 2019 hatten Projekte, die vom Bundesministerium für Bildung und Forschung gefördert werden, die Möglichkeit, ihre derzeitigen Arbeiten in Paderborn zu präsentieren. Bei der Dienstleistungstagung 2019 „Service Systems Innovation“ hat das Forschungszentrum L3S von der Universität Hannover zusammen mit 1KLANG®, der Marke der PROJEKTIONISTEN® GmbH, Einblicke in die Forschung rund um Data4UrbanMobility ermöglicht und interessierten Besuchern der Tagung Fragen rund um die Mobilitätsforschung beantwortet.
Über einen großen Bildschirm konnte das im Projekt erarbeitete Dashboard gezeigt werden, welches Veranstaltungen und deren Auswirkungen auf die Verkehrssituation in der entsprechenden Stadt aufzeigt. Darüber hinaus konnte die Mobilitäts-App D4UM gezeigt werden, über welche Reiseauskünfte, Veranstaltungen als auch weitere nützliche Features für den Endnutzer abgerufen werden.
Auch die MiC-App (Move in the City) wurde vorgestellt, welche als ein Cititzen Science Projekt weitere Daten über Tracking dem Projekt Daten zur Verfügung stellen kann.

• Assessing Sequential Databases for Spontaneous and Posed Facial Expression Recognition. Gebele, Jens; Brune, Philipp; Schwab, Frank; von Mammen, Sebastian (2025). 546–555.
• femtoPro: Real-time linear and nonlinear optics simulations. Brixner, Tobias; Mueller, Stefan; Müller, Andreas; von Mammen, Sebastian (2025).
• Sibai: A Few-Shot Meta-Classifier for Poisoning Detection in Federated Learning. Götz, Melanie; Krauß, Torsten; Dmitrienko, Alexandra (2025).
• TwinBreak: Jailbreaking LLM Security Alignments based on Twin Prompts. Krauß, Torsten; Dashtbani, Hamid; Dmitrienko, Alexandra (2025).
• Jahresbericht 2024. van Ackeren, Janine (2025). 90–92.
• A Comprehensive Survey on Vector Database: Storage and Retrieval Technique, Challenge. Ma, Le; Zhang, Ran; Han, Yikun; Yu, Shirui; Wang, Zaitian; Ning, Zhiyuan; Zhang, Jinghan; Xu, Ping; Li, Pengjiang; Ju, Wei; Chen, Chong; Wang, Dongjie; Liu, Kunpeng; Wang, Pengyang; Wang, Pengfei; Fu, Yanjie; Liu, Chunjiang; Zhou, Yuanchun; Lu, Chang-Tien (2025).
• A Cluster-Based Trusted Secure Multipath Routing Protocol for Mobile Ad Hoc Networks. Bartwal, Himanshu; Sivaraman, Himani; Kumar, Jogendra N. Meghanathan (ed.) (2025). (Vol. 17) 89–109.

  Mobile Ad Hoc Network (MANET) is a self-organizing and flexible system. MANET systems manage sensitive data from many distinct applications in various domains. Its dynamic nature increases its vulnerability to numerous types of security threats. Many of the present approaches using indirect approaches provide false approximations of trust degrees. It is significantly required a good routing system that meets Quality of Service (QoS) standards and enhances network performance. In this paper purposed cluster-based trustworthy safe multipath routing (CTSMP-Routing) for mobile ad hoc networks (MANETs). Load balancing challenge is addressed by using a modified proportional topology optimization (MPTO) approach using geographical data related to network nodes. The Enhanced Seeker Search Optimization (ESSO) approach is used to compute trust degrees after the clustering phase considering numerous network constraints including node mobility, received signal strength, energy consumption, and cooperation rate. Assumed to be the service node, the node showing the highest degree of trust manages inter-cluster routing. We have developed a hybrid soft computing approach termed the multi-layer deep recurrent neural network (ML-DRNN) to enhance the optimal path-finding process. This method selects, among many routes between source and destination nodes, the best one quickly. The outcomes of this paper demonstrate that CTSMP-Routing provides effective protection against several attack paths within the MANET environment and displays better performance in regard to quality of service (QoS) requirements.
• The evolution of bone-eating worm diversity in the Upper Cretaceous Chalk Group of the United Kingdom. Jamison-Todd, Sarah; Witts, James D.; Jones, Marc E. H.; Tangunan, Deborah; Chandler, Kim; Bown, Paul; Twitchett, Richard J. (2025). 20(4) 1–20.

  The bone-eating worm Osedax is today a member of the highly adapted invertebrate assemblages associated with whale carcasses on the ocean floor. The worm has also been found in a variety of other vertebrates in marine environments. Osedax borings are represented by the trace fossil Osspecus, which has been identified in fossil whales and marine reptiles, with the earliest occurrence in the Albian. In studies of present-day whale bones it has been found that individual species of Osedax create distinct boring morphologies. The diversity of boring geometries therefore provides a proxy for species diversity that can be applied to the fossil record to better understand the diversity, ecology, and evolution of extinct Osedax species. We examined marine reptile fossils from the Upper Cretaceous Chalk Group of the United Kingdom, and found five previously undocumented boring morphologies. These results, coupled with a re-examination of previous records of Osspecus, led to the naming of seven new ichnospecies. Using nannofossil biostratigraphy from the chalk, we constrained the ages of these occurrences and found a high species diversity in the early Late Cretaceous, indicating either a rapid diversification or an earlier origin for Osedax than previously estimated. Furthermore, we recognise five Cretaceous ichnospecies that are also found in the Cenozoic, three of which are also found in present-day whale bones.
• Twist-tuned quantum criticality in moiré bilayer graphene. Biedermann, Jan; Janssen, Lukas (2025). 112(4) L041109.
• Jahresbericht 2024. van Ackeren, Janine (2025). 90–92.
• Posthuman Convergences. Transdisciplinary Methods and Practices. Klumbytė, Goda; Jones, Emily; Braidotti, Rosi (2025, August). 408.
• Posthuman Convergences. Transdisciplinary Methods and Practices. Klumbytė, Goda; Jones, Emily; Braidotti, Rosi (2025, August). 408.
• Posthuman Convergences: Transdisciplinary Methods and Practices. Klumbytė, Goda; Jones, Emily; Braidotti, Rosi (2025, August). 408.
• New Materialist Informatics: New Materialism/Computer Science/Technology Design. Klumbytė, Goda; Draude, Claude G. Klumbytė, E. Jones, R. Braidotti (eds.) (2025). 184–216.
• New Materialist Informatics: New Materialism/Computer Science/Technology Design. Klumbytė, Goda; Draude, Claude G. Klumbytė, E. Jones, R. Braidotti (eds.) (2025). 184–216.
• New Materialist Informatics: New Materialism/Computer Science/Technology Design. Klumbytė, Goda; Draude, Claude G. Klumbytė, E. Jones, R. Braidotti (eds.) (2025). 184–216.
• Security and Privacy of Current and Emerging IoT Devices and Systems (Dagstuhl Seminar 2431). Crispo, Bruno; Dmitrienko, Alexandra; Tsudik, Gene; Xu, Wenyuan; Sendner, Christoph (2025).
• A Tutorial on Data-Driven Quality of Experience Modeling with Explainable Artificial Intelligence. Wehner, Nikolas; Seufert, Anika; Hoßfeld, Tobias; Seufert, Michael (2025).
• Posthuman Convergences: Transdisciplinary Methods and Practices. Klumbytė, Goda; Jones, Emily; Braidotti, Rosi (2025, August). 408.
• Pruning by Block Benefit: Exploring the Properties of Vision Transformer Blocks during Domain Adaptation. Glandorf, Patrick; Bodo, Rosenhahn (2025).
• VIA-VR: A Platform to Streamline the Development of Virtual Reality Serious Games for Healthcare. Truman, Samuel; Von Mammen, Sebastian (2025). 463–468.
• Aggregation-Free Uncertainty Estimation for CTC-Based Automatic Speech Recognition. Rumberg, Lars; Gebauer, Christopher; Ostermann, Jörn (2025).
• A Survey of Non-Learning-Based Abstractions for Sequential Decision-Making. Schmöcker, Robin; Dockhorn, Alexander (2025). 13 100808–100830.
• Cascade - A sequential ensemble method for continuous control tasks. Schmöcker, Robin; Dockhorn, Alexander (2025).
• Time-critical and confidence-based abstraction dropping methods. Schmöcker, Lennart Kampmann Robin (2025).
• Cell Tracking according to Biological Needs - Strong Mitosis-aware Multi-Hypothesis Tracker with Aleatoric Uncertainty. Kaiser, Timo; Schier, Maximilian; Rosenhahn, Bodo (2025).
• VaMEx3-MarsSymphony: Technology Demonstration for Martian exploration swarm robotics. Riegler, Clemens; Kayal, Hakan; Maurer, Andreas; Mutter, Julian; Neuhaus, Lennart; Stadler, Joshua (2025).
• Artificial Intelligence and Machine Learning Based Plant Monitoring. Rampure, Shrutika C; P, Bhavyashree S; T, Rakshitha B (2025).
• The Resound Sphere: Co-Exploring Alternatives for Community Remote Practice of Faith. Wolf, Sara; Chatting, David; Morris, Ben; Claisse, Caro; Durrant, Abigail C. (2025).
• The Resound Sphere: Co-Exploring Alternatives for Community Remote Practice of Faith. Wolf, Sara; Chatting, David; Morris, Ben; Claisse, Caro; Durrant, Abigail C. (2025).
• Assessment of Abrupt Shifts in CMIP6 Models Using Edge Detection. Terpstra, Sjoerd; Falkena, Swinda K. J.; Bastiaansen, Robbin; Bathiany, Sebastian; Dijkstra, Henk A.; von der Heydt, Anna S. (2025). 6(3) e2025AV001698.

  Abstract Past research has shown that multiple climate subsystems might undergo abrupt shifts, such as the Arctic Winter sea ice or the Amazon rainforest, but there are large uncertainties regarding their timing and spatial extent. In this study we investigated when and where abrupt shifts occur in the latest generation of earth system models (CMIP6) under a scenario of 1% annual increase in CO2. We considered 82 ocean, atmosphere, and land variables across 57 models. We used a Canny edge detection method to identify abrupt shifts occurring on yearly to decadal timescales, and performed a connected component analysis to quantify the spatial extent of these shifts. The systems analyzed include the North Atlantic subpolar gyre, Tibetan Plateau, land permafrost, Amazon rainforest, Antarctic sea ice, monsoon systems, Arctic summer sea ice, Arctic winter sea ice, and Barents sea ice. Except for the monsoon systems, we found abrupt shifts in all of these across multiple models. Despite large inter-model variations, higher levels of global warming consistently increase the risk of abrupt shifts in CMIP6 models. At a global warming of 1.5°C, six out of 10 studied climate subsystems already show large-scale abrupt shifts across multiple models.
• Low-Constraint Ray Optimization for Photogrammetric Shallow Water Bathymetry. Liebender, C.; Meyer, P.; Bleier, M.; Nüchter, A. in The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, XLVIII-2/W10-2025 (2025). 163–168.

  This paper presents a raytracing-based approach for estimating the depth of shallow water bodies. Based on a calibrated, multi-view camera setup above the water surface, we find correspondences that lie below the surface in pairs of two views. We trace rays from each camera to each triangulated correspondence, as if no interface is present in the scene. Using snell’s law, we then compute refracted rays to optimize an objective function with a theoretical optimum as the Hesse normal form of the water surface. The challenge of our work is to keep the number of constraints in our mathematical model as low as possible. For a practical evaluation, we record images with two different setups: a laboratory setting with a box filled with water at a depth of 14.5 cm and a water roll-of container at 2.2 m, and use both fiducial markers as well as computed features as correspondences. Our results show that with a well-setup optimizer, our method converges towards the true water plane and is usable to estimate the depth of our setups.
• Robustness of Question Answering Systems in the Biomedical Domain: a study of the BioASQ dataset. Reeves, Andrew; Dong, Hang (2025). 247–252.

  Robustness is a critical consideration when integrating artificial intelligence (AI) systems into decision-making processes. This concern is particularly relevant for generative AI systems, which are designed to consistently produce convincing outputs but can be prone to hallucinations, risking overconfidence in their outputs. This paper investigates the performance of fine-tuning and retrieval augmented generation (RAG) under external data quality perturbations, including typographical errors and factual inaccuracies. Results from experiments using the BioASQ Task 12b question answering dataset and PubMed articles showed nuanced trade-offs, with either RAG or fine-tuning performing better for different scenarios. Furthermore, an analysis of LLMs’ self-reported confidence scores indicated a tendency toward overconfidence, particularly in the presence of inconsistent or erroneous context data. A novel mitigation strategy, leveraging an LLM for data quality error correction was evaluated, but the results demonstrated limited effectiveness, highlighting the need for more advanced correction techniques.
• Applying Cfahp to Explore the Key Models of Semiconductor Pre-Sales. Kao, Fei-Hon; Hsieh, Chia-Hsiang; Pei, Wen in Frontiers in Artificial Intelligence and Applications, R. Mizoguchi, P. Dillenbourg, Z. Zhu (eds.) (2025). (Vol. 151) 149–156.
• Posthuman Convergences: Transdisciplinary Methods and Practices. Klumbytė, Goda; Jones, Emily; Braidotti, Rosi (2025, August). 408.
• VIA-VR: A Platform to Streamline the Development of Virtual Reality Serious Games for Healthcare. Truman, Samuel; Von Mammen, Sebastian (2025). 463–468.
• Introduction to Posthuman Convergences. Klumbytė, Goda; Jones, Emily; Braidotti, Rosi G. Klumbytė, E. Jones, R. Braidotti (eds.) (2025). 1–25.
• A Graph-Based Laser Path Solver Algorithm for Virtual Reality Laboratory Simulations. Müller, Andreas; Mueller, Stefan; Brixner, Tobias; von Mammen, Sebastian (2025).
• SimLab: A Platform for Simulation-based Evaluation of Conversational Information Access Systems. Bernard, Nolwenn; Suresh, Sharath Chandra Etagi; Balog, Krisztian; Zhai, ChengXiang (2025).
• CRS Arena: Crowdsourced Benchmarking of Conversational Recommender Systems. Bernard, Nolwenn; Joko, Hideaki; Hasibi, Faegheh; Balog, Krisztian in WSDM ’25 (2025). 1028–1031.
• Frequently Used References For Atomic Data In X-ray Spectroscopy. Hell, N.; Brown, G. V.; Eckart, M. E.; Fairchild, A. J.; Kilbourne, C. A.; Leutenegger, M. A.; Porter, F. S.; Witthoeft, M. C. (2025).

  Accurate atomic physics reference data are a crucial requirement for analysis and interpretation of observed spectra, even more so for observations with high spectral resolution. This document provides a curated list of atomic physics references frequently used for plasma diagnostics in X-ray spectroscopy, outside of comprehensive plasma models that typically come with their own underlying atomic databases. The list includes references to physical constants, laboratory benchmarks, transition energies, position and line shapes of neutral fluorescence lines, radiative branching ratios, and commonly used notation for prominent transitions. Quick-look tables for transition energies in H-, He-, and Li-like ions and line positions and shapes for fluorescence lines in neutrals. The main focus is on K-shell transitions. For the H- and He-like tables, we cite state-of-the art calculations that we consider currently the best available reference energies, which are considered high accuracy and thus typically used for energy scale calibration in laboratory measurements. Omissions in these tables are due to the lack of availability in the chosen references, and are not a statement about the relevance of these lines. Due to their complex and highly source-dependent line shape, the atomic data for neutrals is of lower accuracy than that for the highly charged ions, and the best reference data for these line shapes typically consist of empirical models derived from very high-resolution laboratory measurements. The table for neutrals provided here is consistent with the reference used for the energy gain scale calibration of XRISM/Resolve. This document is meant to serve as a resource to help find relevant references and conveniently formatted overview tables. When making use of the information found in these papers, credit should be given to their original authors by citing the appropriate references.
• High-pass noise suppression in the mosquito auditory system. Lapshin, Dmitry N.; Vorontsov, Dmitry D. (2025).

  Mosquitoes detect sound with their antennae, which transmit vibrations to mechanosensory neurons in Johnstontextquoterights organ. However, their auditory system is exposed to low-frequency noise from external sources, such as convective and thermal noise, and internal sources, such as flight-induced noise, which could impair sensitivity. High-pass filters (HPFs) may mitigate this issue by suppressing low-frequency interference before it is transformed into neuronal signals. We investigated HPF mechanisms in Culex pipiens mosquitoes by analyzing the phase-frequency characteristics of the primary sensory neurons in the Johnstontextquoterights organ. Electrophysiological recordings from male and female mosquitoes revealed phase shifts consistent with high-pass filtering. Initial modeling suggested a single HPF; however, experimental data required revising the model to include two serially connected HPFs to account for phase shifts exceeding -90textdegree. The results showed that male mosquitoes exhibit stronger low-frequency suppression (~32 dB at 10 Hz) compared to females (~21 dB), with some female neurons showing negligible filtering. The estimated delay in signal transmission was ~7 ms for both sexes. These findings suggest that HPFs enhance noise immunity, particularly in males, whose auditory sensitivity is critical for mating. The diversity in female neuronal tuning may reflect broader auditory functions in addition to mating, such as host detection. This study provides indirect evidence for HPFs in mosquito hearing and highlights sex-specific adaptations in auditory processing. The proposed dual-HPF model improves our understanding of how mosquitoes maintain high auditory sensitivity in noisy environments.Competing Interest StatementThe authors have declared no competing interest.Institute for Information Transmission Problems, https://ror.org/013w2d378, FFNU-2022-0025, FFNU-2025-0033Koltzov Institute of Developmental Biology, https://ror.org/02mh2cd26, 0088-2024-0009
• Discovery and Preliminary Characterization of a Third Interstellar Object: 3I/ATLAS. Seligman, Darryl Z.; Micheli, Marco; Farnocchia, Davide; Denneau, Larry; Noonan, John W.; Hsieh, Henry H.; Santana-Ros, Toni; Tonry, John; Auchettl, Katie; Conversi, Luca; Devogèle, Maxime; Faggioli, Laura; Feinstein, Adina D.; Fenucci, Marco; Ferrais, Marin; Frincke, Tessa; Hainaut, Olivier R.; Hart, Kyle; Hoffman, Andrew; Holt, Carrie E.; Hoogendam, Willem B.; Huber, Mark E.; Jehin, Emmanuel; Kareta, Theodore; Keane, Jacqueline V.; Kelley, Michael S. P.; Lister, Tim; Mandt, Kathleen; Marčeta, Dušan; Meech, Karen J.; Miftah, Mohamed Amine; Morgan, Marvin; Ocaña, Francisco; Peña-Asensio, Eloy; Shappee, Benjamin J.; Siverd, Robert J.; Taylor, Aster G.; Tucker, Michael A.; Wainscoat, Richard; Weryk, Robert; Wray, James J.; Yaginuma, Atsuhiro; Yang, Bin; Ye, Quanzhi; Zhang, Qicheng (2025).

  We report initial observations aimed at the characterization of a third interstellar object candidate. This object, 3I/ATLAS or C/2025 N1 (ATLAS), was discovered on 2025 July 1 UT and has an orbital eccentricity of e∼6.1, perihelion of q∼1.36 au, inclination of ∼175∘, and hyperbolic velocity of V∞∼58 km s−1. We report deep stacked images obtained using the Canada-France-Hawaii Telescope and the Very Large Telescope that resolve a compact coma. Using images obtained from several smaller ground-based telescopes, we find minimal light curve variation for the object over a ∼4 day time span. The visible/near-infrared spectral slope of the object is 17.1±0.2 %/100 nm, comparable to other interstellar objects and primitive solar system small bodies (comets and D-type asteroids), although this result is likely affected by some coma contamination. 3I/ATLAS will be observable through early September 2025, then unobservable by Earth-based observatories near perihelion due to low solar elongation. It will be observable again from the ground in late November 2025. Although this limitation unfortunately prohibits detailed Earth-based observations at perihelion when the activity of 3I/ATLAS is likely to peak, spacecraft at Mars could be used to make valuable observations at this time. Additional photometric, spectroscopic, and polarimetric monitoring of 3I/ATLAS by ground- and space-based telescopes, and possibly spacecraft based at Mars, are highly encouraged for characterizing 3I/ATLAS's rotational light curve, activity evolution, nongravitational acceleration, and compositional indicators of formation conditions.
• Monadic ULLER: A Unified Categorical Semantics of the Neurosymbolic ULLER Framework. Schellhorn, Daniel; Mossakowski, Till G. Eleonora, P. Hitzler, E. van Krieken (eds.) (2025).
• femtoPro: Teaching and Training of Ultrafast Optics in Virtual Reality. Müller, S.; Müller, A.; Truman, S.; Buhl, T.; von Mammen, S.; Brixner, T. (2025). 1–4.

  We have developed a virtual-reality pulsed laser laboratory for didactic training. Users can freely place and align optical elements and study their effect on ultrashort optical pulses in real time. We have created various tutorials that guide the user in a step-by-step fashion through the construction, alignment, and operation of optical setups. We illustrate the didactic concept and its implementation in our program through selected tutorials such as constructing a reflecting telescope or setting up an interferometer. We further demonstrate that we can teach pulse characterization methods such as spectral interferometry for direct electric-field reconstruction (SPIDER).
• Levels of Automation Revisited: Standardizing Human-Machine Interaction with Process Patterns. Janiesch, Christian; Ciftci, Seyyid A. (2025).
• Sustainable, Situation-Aware Multi Objective Spatial Load Scheduling for Data Centers. Schiller, Jonas; Pruckner, Marco in E-Energy ’25 (2025). 874–881.

  Data centers are already among the largest consumers of electricity worldwide and recent advancements in Large Language Models (LLM) will further increase this demand. Through their operation, they are responsible for large amounts of indirect carbon emissions as well as direct and indirect water consumption. This work proposes a novel multi-objective load shifting optimization focusing on low costs and reduced resource depletion. For the resource depletion we combine the long term effects of carbon emissions with the short term effects of water consumption, which in a novel approach is weighted based on a newly developed spatial and temporal drought risk indicator. We investigate a use case where we optimally shift the inference load of a LLM spatially when hosted in ten different European countries. Additionally, we extend previous research on the water intensity of the electric grid by providing the first automated framework called IntensityLib for calculating water intensity factors for the European electricity grid as well as integrating a flow-tracing algorithm which models the effect of imports and exports. We find that adjusting for water scarcity leads to entirely different solutions compared to simply minimizing water consumption and can prevent further stress on regions with reoccurring drought risks.
• Conclusion: (Infra)Structures for the Convergences. Klumbytė, Goda; Jones, Emily; Braidotti, Rosi G. Klumbytė, E. Jones, R. Braidotti (eds.) (2025). 365–278.
• Conclusion: (Infra)Structures for the Convergences. Klumbytė, Goda; Jones, Emily; Braidotti, Rosi G. Klumbytė, E. Jones, R. Braidotti (eds.) (2025). 365–278.
• Conclusion: (Infra)Structures for the Convergences. Klumbytė, Goda; Jones, Emily; Braidotti, Rosi G. Klumbytė, E. Jones, R. Braidotti (eds.) (2025). 365–278.
• Introduction to Posthuman Convergences. Klumbytė, Goda; Jones, Emily; Braidotti, Rosi G. Klumbytė, E. Jones, R. Braidotti (eds.) (2025). 1–25.
• Introduction to Posthuman Convergences. Klumbytė, Goda; Jones, Emily; Braidotti, Rosi G. Klumbytė, E. Jones, R. Braidotti (eds.) (2025). 1–25.
• The Aesthetic Influences of War: A Phenomenology of Tim Hetherington’s ‘Feedback Loop’. Gilks, Mark (2024). 17(1) 7–27.
• Towards a Formal Characterization of User Simulation Objectives in Conversational Information Access. Bernard, Nolwenn; Balog, Krisztian in ICTIR ’24 (2024). 185–193.
• PKG API: A Tool for Personal Knowledge Graph Management. Bernard, Nolwenn; Kostric, Ivica; Łajewska, Weronika; Balog, Krisztian; Galuščáková, Petra; Setty, Vinay; Skjæveland, Martin G. in WWW ’24 (2024). 1051–1054.
• An Ecosystem for Personal Knowledge Graphs: A Survey and Research Roadmap. Skjæveland, Martin G.; Balog, Krisztian; Bernard, Nolwenn; Lajewska, Weronika; Linjordet, Trond (2024). 55–69.
• Identifying Breakdowns in Conversational Recommender Systems using User Simulation. Bernard, Nolwenn; Balog, Krisztian in CUI ’24 (2024). 1–10.
• IAI MovieBot 2.0: An Enhanced Research Platform with Trainable Neural Components and Transparent User Modeling. Bernard, Nolwenn; Kostric, Ivica; Balog, Krisztian in WSDM ’24 (2024). 1042–1045.
• Leveraging User Simulation to Develop and Evaluate Conversational Information Access Agents. Bernard, Nolwenn in WSDM ’24 (2024). 1136–1138.
• Digital labour platforms and social dialogue at EU level: How new players redefine actors and their roles and what this means for collective bargaining. Piasna, Agnieszka (2024). 58(4) 568–582.

  Digital labour platforms transform work and employment relations in many ways. Crucially, they renounce the role of the employer, leading to a redefinition of traditional categories of actors and their roles in social policy and dialogue. Using the example of the EU proposal for a directive on improving working conditions in platform work, this article examines how this redefinition is materialising in practice among social partners in order to understand its implications for the future of social dialogue and legislation. While previous research focused on the status of workers, this study takes a complementary view by considering the employer side as a key counterpart in a functioning employment relationship. The actor-approach is used to analyse the views and positions of EU social partners and how their prerogatives are affected by the blurring of the role of the employer and the redefinition of traditional categories of actors in social policy.
• Naselja Bosne i Hercegovine kroz popise stanovništva u periodu 1879.-1991. Suljić, Alija (2024).
• The Optically Thick Rotating Magnetic Wind from a Massive White Dwarf Merger Product. II. Axisymmetric Magnetohydrodynamic Simulations. Zhong, Yici; Kashiyama, Kazumi; Takasao, Shinsuke; Shigeyama, Toshikazu; Fujisawa, Kotaro (2024). 963(1) 26.

  We numerically construct a series of axisymmetric rotating magnetic wind solutions, aiming at exploring the observation properties of massive white dwarf (WD) merger remnants with a strong magnetic field, a fast spin, and an intense mass loss, as inferred for WD J005311. We investigate the magnetospheric structure and the resultant spin-down torque exerted to the merger remnant with respect to the surface magnetic flux Φ * , spin angular frequency Ω * and the mass-loss rate M ̇ . We confirm that the wind properties for σ ≡ Φ * 2 Ω * 2 / M ̇ v esc 3 ≳ 1 significantly deviate from those of the spherical Parker wind, where v esc is the escape velocity at stellar surface. For such a rotating magnetic wind sequence, we find (i) a quasiperiodic mass eruption triggered by magnetic reconnection along with the equatorial plane and (ii) a scaling relation for the spin-down torque T ≈ ( 1 / 2 ) × M ̇ Ω * R * 2 σ 1 / 4 . We apply our results to discuss the spin-down evolution and wind anisotropy of massive WD merger remnants, the latter of which could be probed by a successive observation of WD J005311 using Chandra.
• Alice in Wonderland: Simple Tasks Showing Complete Reasoning Breakdown in State-Of-the-Art Large Language Models. Nezhurina, Marianna; Cipolina-Kun, Lucia; Cherti, Mehdi; Jitsev, Jenia (2024, June).

  Large Language Models (LLMs) are often described as being instances of foundation models - that is, models that transfer strongly across various tasks and conditions in few-show or zero-shot manner, while exhibiting scaling laws that predict function improvement when increasing the pre-training scale. These claims of excelling in different functions and tasks rely on measurements taken across various sets of standardized benchmarks showing high scores for such models. We demonstrate here a dramatic breakdown of function and reasoning capabilities of state-of-the-art models trained at the largest available scales which claim strong function, using a simple, short, conventional common sense problem formulated in concise natural language, easily solvable by humans. The breakdown is dramatic, as models also express strong overconfidence in their wrong solutions, while providing often non-sensical "reasoning"-like explanations akin to confabulations to justify and backup the validity of their clearly failed responses, making them sound plausible. Various standard interventions in an attempt to get the right solution, like various type of enhanced prompting, or urging the models to reconsider the wrong solutions again by multi step re-evaluation, fail. We take these initial observations to the scientific and technological community to stimulate urgent re-assessment of the claimed capabilities of current generation of LLMs, Such re-assessment also requires common action to create standardized benchmarks that would allow proper detection of such basic reasoning deficits that obviously manage to remain undiscovered by current state-of-the-art evaluation procedures and benchmarks. Code for reproducing experiments in the paper and raw experiments data can be found at https://github.com/LAION-AI/AIW
• Can Large Language Models Understand Symbolic Graphics Programs?. Qiu, Zeju; Liu, Weiyang; Feng, Haiwen; Liu, Zhen; Xiao, Tim Z.; Collins, Katherine M.; Tenenbaum, Joshua B.; Weller, Adrian; Black, Michael J.; Schölkopf, Bernhard (2024).

  Assessing the capabilities of large language models (LLMs) is often challenging, in part, because it is hard to find tasks to which they have not been exposed during training. We take one step to address this challenge by turning to a new task: focusing on symbolic graphics programs, which are a popular representation for graphics content that procedurally generates visual data. LLMs have shown exciting promise towards program synthesis, but do they understand symbolic graphics programs? Unlike conventional programs, symbolic graphics programs can be translated to graphics content. Here, we characterize an LLM's understanding of symbolic programs in terms of their ability to answer questions related to the graphics content. This task is challenging as the questions are difficult to answer from the symbolic programs alone -- yet, they would be easy to answer from the corresponding graphics content as we verify through a human experiment. To understand symbolic programs, LLMs may need to possess the ability to imagine how the corresponding graphics content would look without directly accessing the rendered visual content. We use this task to evaluate LLMs by creating a large benchmark for the semantic understanding of symbolic graphics programs. This benchmark is built via program-graphics correspondence, hence requiring minimal human efforts. We evaluate current LLMs on our benchmark to elucidate a preliminary assessment of their ability to reason about visual scenes from programs. We find that this task distinguishes existing LLMs and models considered good at reasoning perform better. Lastly, we introduce Symbolic Instruction Tuning (SIT) to improve this ability. Specifically, we query GPT4-o with questions and images generated by symbolic programs. Such data are then used to finetune an LLM. We also find that SIT data can improve the general instruction following ability of LLMs.
• The recurrent nova T CrB had prior eruptions observed near December 1787 and October 1217 AD. Schaefer, Bradley E (2023). 54(4) 436–455.

  The famous recurrent nova (RN) T Coronae Borealis (T CrB) has had observed eruptions peaking at a visual magnitude of 2.0 in the years 1866 and 1946, while a third eruption is now expected for the year 2024.4 ± 0.3. Each RN has very similar light curves of eruptions that come with a fairly even-spacing in time, for which T CrB has a recurrence timescale near 80 years. So it is reasonable to look backwards in time for prior eruptions, around 1786, and so on back. I have investigated two long-lost suggestions that T CrB was seen in eruption in the years 1217 and 1787. (1) In a catalog published in 1789, the Reverend Francis Wollaston reports an astrometric position for a star that is exactly on top of T CrB. From his letters, these observations were made on at least four occasions with both a large and small telescope, within a few days before 1787 December 28. Wollaston’s limiting magnitude for his astrometry is near 7.8 mag, so T CrB would have to have been in eruption. Wollaston's quoted coordinates are not from the nearest star above his limit, HD 143707, because any mistake that places the error box on top of T CrB has much too small a probability to be acceptable. With other transients strongly rejected, the only way that Wollaston could get the coordinates was to have measured the coordinates of T CrB itself during an eruption. (2) The 1217 event has an eyewitness report written by Abbott Burchard of Upsberg as a fast-rising stellar point-source (“stella”) in Corona Borealis that “shone with great light,” lasted for “many days,” and was ascribed as being a “wonderful sign.” This event cannot be a report of a comet, because Burchard used the term for a star (“stella”) and not for a comet, and because Burchard had the omen being very positive, with such being impossible for comets that are universally the worst of omens. The reported event is just as expected for a prior eruption of T CrB, and all other possibilities are strongly rejected, so the case for the 1217 eruption of T CrB is strong.
• Can Transformers Learn to Solve Problems Recursively?. Zhang, Shizhuo Dylan; Tigges, Curt; Biderman, Stella; Raginsky, Maxim; Ringer, Talia (2023).

  Neural networks have in recent years shown promise for helping software engineers write programs and even formally verify them. While semantic information plays a crucial part in these processes, it remains unclear to what degree popular neural architectures like transformers are capable of modeling that information. This paper examines the behavior of neural networks learning algorithms relevant to programs and formal verification proofs through the lens of mechanistic interpretability, focusing in particular on structural recursion. Structural recursion is at the heart of tasks on which symbolic tools currently outperform neural models, like inferring semantic relations between datatypes and emulating program behavior. We evaluate the ability of transformer models to learn to emulate the behavior of structurally recursive functions from input-output examples. Our evaluation includes empirical and conceptual analyses of the limitations and capabilities of transformer models in approximating these functions, as well as reconstructions of the ``shortcut" algorithms the model learns. By reconstructing these algorithms, we are able to correctly predict 91 percent of failure cases for one of the approximated functions. Our work provides a new foundation for understanding the behavior of neural networks that fail to solve the very tasks they are trained for.
• On Correlated Stock Market Time Series Generation. Masi, Giuseppe; Prata, Matteo; Conti, Michele; Bartolini, Novella; Vyetrenko, Svitlana in ICAIF ’23 (2023). 524–532.

  In this paper, we present CoMeTS-GAN (Correlated Multivariate Time Series GAN), a framework based on Conditional Generative Adversarial Networks (C-GANs), designed to generate mid-prices and volumes time series of correlated stocks. This tool provides a light and responsive solution for realistic stock market simulation. It is able to accurately learn and reproduce inter-asset correlations, a crucial aspect for achieving realness in multi-stock simulation environments. Our experimental campaign assesses the model using acknowledged stylized facts of stock markets as well as additional metrics capturing inter-asset correlations. We compare our model to leading architectures, highlighting our approach’s strengths. These findings suggest the potential of CoMeTS-GAN in realistically simulating correlated price movements, offering a responsive market environment and valuable input for trading strategy formulation.
• Element abundance patterns in stars indicate fission of nuclei heavier than uranium. Roederer, Ian U; Vassh, Nicole; Holmbeck, Erika M; Mumpower, Matthew R; Surman, Rebecca; Cowan, John J; Beers, Timothy C; Ezzeddine, Rana; Frebel, Anna; Hansen, Terese T; Placco, Vinicius M; Sakari, Charli M (2023). 382(6675) 1177–1180.

  textlessptextgreater The heaviest chemical elements are naturally produced by the rapid neutron-capture process ( \textlessitalic\textgreaterr\textless/italic\textgreater -process) during neutron star mergers or supernovae. The textlessitalictextgreaterrtextless/italictextgreater -process production of elements heavier than uranium (transuranic nuclei) is poorly understood and inaccessible to experiments so must be extrapolated by using nucleosynthesis models. We examined element abundances in a sample of stars that are enhanced in textlessitalictextgreaterrtextless/italictextgreater -process elements. The abundances of elements ruthenium, rhodium, palladium, and silver (atomic numbers \textlessitalic\textgreaterZ\textless/italic\textgreater = 44 to 47; mass numbers \textlessitalic\textgreaterA\textless/italic\textgreater = 99 to 110) correlate with those of heavier elements (63 ≤ \textlessitalic\textgreaterZ\textless/italic\textgreater ≤ 78, \textlessitalic\textgreaterA\textless/italic\textgreater \textgreater 150). There is no correlation for neighboring elements (34 ≤ \textlessitalic\textgreaterZ\textless/italic\textgreater ≤ 42 and 48 ≤ \textlessitalic\textgreaterZ\textless/italic\textgreater ≤ 62). We interpret this as evidence that fission fragments of transuranic nuclei contribute to the abundances. Our results indicate that neutron-rich nuclei with mass numbers textgreater260 are produced in textlessitalictextgreaterrtextless/italictextgreater -process events. textless/ptextgreater
• Outflows from the Youngest Stars are Mostly Molecular. Ray, T P; McCaughrean, M J; Caratti o Garatti, A; Kavanagh, P J; Justtanont, K; van Dishoeck, E F; Reitsma, M; Beuther, H; Francis, L; Gieser, C; Klaassen, P; Perotti, G; Tychoniec, L; van Gelder, M; Colina, L; Greve, Th R; Güdel, M; Henning, Th; Lagage, P O; Östlin, G; Vandenbussche, B; Waelkens, C; Wright, G (2023).

  The formation of stars and planets is accompanied not only by the build-up of matter, i.e., accretion, but also by its expulsion in the form of highly supersonic jets that can stretch for several parsecs1,2. As accretion and jet activity are correlated and because young stars acquire most of their mass rapidly early on, the most powerful jets are associated with the youngest protostars3. This period, however, coincides with the time when the protostar and its surroundings are hidden behind many magnitudes of visual extinction. Millimetre interferometers can probe this stage but only for the coolest components3. No information is provided on the hottest (þinspace\textgreaterþinspace1000 K) constituents of the jet, i. e. the atomic, ionized, and high temperature molecular gas that are thought to make up the jet's backbone. Can we detect such a high temperature spine and what is it made up of? Here we report near-infrared JWST observations of Herbig-Haro 211, an outflow from an analogue of our Sun when it was at most a few times 104 years old. These reveal copious emission from hot molecules explaining the origin of the so-called ``Green Fuzzies''4--7 discovered nearly two decades ago by the Spitzer Space Telescope8. This outflow is found to be propagating slowly in comparison to its more evolved counterparts and, surprisingly, almost no trace of atomic or ionized emission is seen suggesting its spine is almost purely molecular.
• Are Emergent Abilities of Large Language Models a Mirage?. Schaeffer, Rylan; Miranda, Brando; Koyejo, Sanmi (2023). 55565–55581.

  Recent work claims that large language models display emergent abilities, abilities not present in smaller-scale models that are present in larger-scale models. What makes emergent abilities intriguing is two-fold: their sharpness, transitioning seemingly instantaneously from not present to present, and their unpredictability, appearing at seemingly unforeseeable model scales. Here, we present an alternative explanation for emergent abilities: that for a particular task and model family, when analyzing fixed model outputs, emergent abilities appear due to the researcher's choice of metric rather than due to fundamental changes in model behavior with scale. Specifically, nonlinear or discontinuous metrics produce apparent emergent abilities, whereas linear or continuous metrics produce smooth, continuous predictable changes in model performance. We present our alternative explanation in a simple mathematical model, then test it in three complementary ways: we (1) make, test and confirm three predictions on the effect of metric choice using the InstructGPT/GPT-3 family on tasks with claimed emergent abilities; (2) make, test and confirm two predictions about metric choices in a meta-analysis of emergent abilities on BIG-Bench; and (3) show to choose metrics to produce never-before-seen seemingly emergent abilities in multiple vision tasks across diverse deep networks. Via all three analyses, we provide evidence that alleged emergent abilities evaporate with different metrics or with better statistics, and may not be a fundamental property of scaling AI models.
• A Systematic Review of Fairness, Accountability, Transparency and Ethics in Information Retrieval. Bernard, Nolwenn; Balog, Krisztian (2023).
• MG-ShopDial: A Multi-Goal Conversational Dataset for e-Commerce. Bernard, Nolwenn; Balog, Krisztian in SIGIR ’23 (2023). 2775–2785.
• DAGFiNN: A Conversational Conference Assistant. Kostric, Ivica; Balog, Krisztian; Aresvik, Tollov Alexander; Bernard, Nolwenn; Dorheim, Eyvinn Thu; Hantula, Pholit; Havn-Sorensen, Sander; Henriksen, Rune; Hosseini, Hengameh; Khlybova, Ekaterina; Lajewska, Weronika; Mosand, Sindre Ekrheim; Orujova, Narmin in RecSys ’22 (2022). 628–631.
• Beyond the Imitation Game: Quantifying and extrapolating the capabilities of language models. Srivastava, Aarohi; Rastogi, Abhinav; Rao, Abhishek; Shoeb, Abu Awal Md; Abid, Abubakar; Fisch, Adam; Brown, Adam R; Santoro, Adam; Gupta, Aditya; Garriga-Alonso, Adri�; Kluska, Agnieszka; Lewkowycz, Aitor; Agarwal, Akshat; Power, Alethea; Ray, Alex; Warstadt, Alex; Kocurek, Alexander W; Safaya, Ali; Tazarv, Ali; Xiang, Alice; Parrish, Alicia; Nie, Allen; Hussain, Aman; Askell, Amanda; Dsouza, Amanda; Slone, Ambrose; Rahane, Ameet; Iyer, Anantharaman S; Andreassen, Anders; Madotto, Andrea; Santilli, Andrea; Stuhlmüller, Andreas; Dai, Andrew; La, Andrew; Lampinen, Andrew; Zou, Andy; Jiang, Angela; Chen, Angelica; Vuong, Anh; Gupta, Animesh; Gottardi, Anna; Norelli, Antonio; Venkatesh, Anu; Gholamidavoodi, Arash; Tabassum, Arfa; Menezes, Arul; Kirubarajan, Arun; Mullokandov, Asher; Sabharwal, Ashish; Herrick, Austin; Efrat, Avia; Erdem, Aykut; Karakaş, Ayla; Roberts, B Ryan; Loe, Bao Sheng; Zoph, Barret; Bojanowski, Bartłomiej; Özyurt, Batuhan; Hedayatnia, Behnam; Neyshabur, Behnam; Inden, Benjamin; Stein, Benno; Ekmekci, Berk; Lin, Bill Yuchen; Howald, Blake; Orinion, Bryan; Diao, Cameron; Dour, Cameron; Stinson, Catherine; Argueta, Cedrick; Ramírez, César Ferri; Singh, Chandan; Rathkopf, Charles; Meng, Chenlin; Baral, Chitta; Wu, Chiyu; Callison-Burch, Chris; Waites, Chris; Voigt, Christian; Manning, Christopher D; Potts, Christopher; Ramirez, Cindy; Rivera, Clara E; Siro, Clemencia; Raffel, Colin; Ashcraft, Courtney; Garbacea, Cristina; Sileo, Damien; Garrette, Dan; Hendrycks, Dan; Kilman, Dan; Roth, Dan; Freeman, Daniel; Khashabi, Daniel; Levy, Daniel; González, Daniel Moseguí; Perszyk, Danielle; Hernandez, Danny; Chen, Danqi; Ippolito, Daphne; Gilboa, Dar; Dohan, David; Drakard, David; Jurgens, David; Datta, Debajyoti; Ganguli, Deep; Emelin, Denis; Kleyko, Denis; Yuret, Deniz; Chen, Derek; Tam, Derek; Hupkes, Dieuwke; Misra, Diganta; Buzan, Dilyar; Mollo, Dimitri Coelho; Yang, Diyi; Lee, Dong-Ho; Schrader, Dylan; Shutova, Ekaterina; Cubuk, Ekin Dogus; Segal, Elad; Hagerman, Eleanor; Barnes, Elizabeth; Donoway, Elizabeth; Pavlick, Ellie; Rodola, Emanuele; Lam, Emma; Chu, Eric; Tang, Eric; Erdem, Erkut; Chang, Ernie; Chi, Ethan A; Dyer, Ethan; Jerzak, Ethan; Kim, Ethan; Manyasi, Eunice Engefu; Zheltonozhskii, Evgenii; Xia, Fanyue; Siar, Fatemeh; Martínez-Plumed, Fernando; Happé, Francesca; Chollet, Francois; Rong, Frieda; Mishra, Gaurav; Winata, Genta Indra; de Melo, Gerard; Kruszewski, Germán; Parascandolo, Giambattista; Mariani, Giorgio; Wang, Gloria; Jaimovitch-López, Gonzalo; Betz, Gregor; Gur-Ari, Guy; Galijasevic, Hana; Kim, Hannah; Rashkin, Hannah; Hajishirzi, Hannaneh; Mehta, Harsh; Bogar, Hayden; Shevlin, Henry; Schütze, Hinrich; Yakura, Hiromu; Zhang, Hongming; Wong, Hugh Mee; Ng, Ian; Noble, Isaac; Jumelet, Jaap; Geissinger, Jack; Kernion, Jackson; Hilton, Jacob; Lee, Jaehoon; Fisac, Jaime Fernández; Simon, James B; Koppel, James; Zheng, James; Zou, James; Kocoń, Jan; Thompson, Jana; Wingfield, Janelle; Kaplan, Jared; Radom, Jarema; Sohl-Dickstein, Jascha; Phang, Jason; Wei, Jason; Yosinski, Jason; Novikova, Jekaterina; Bosscher, Jelle; Marsh, Jennifer; Kim, Jeremy; Taal, Jeroen; Engel, Jesse; Alabi, Jesujoba; Xu, Jiacheng; Song, Jiaming; Tang, Jillian; Waweru, Joan; Burden, John; Miller, John; Balis, John U; Batchelder, Jonathan; Berant, Jonathan; Frohberg, Jörg; Rozen, Jos; Hernandez-Orallo, Jose; Boudeman, Joseph; Guerr, Joseph; Jones, Joseph; Tenenbaum, Joshua B; Rule, Joshua S; Chua, Joyce; Kanclerz, Kamil; Livescu, Karen; Krauth, Karl; Gopalakrishnan, Karthik; Ignatyeva, Katerina; Markert, Katja; Dhole, Kaustubh D; Gimpel, Kevin; Omondi, Kevin; Mathewson, Kory; Chiafullo, Kristen; Shkaruta, Ksenia; Shridhar, Kumar; McDonell, Kyle; Richardson, Kyle; Reynolds, Laria; Gao, Leo; Zhang, Li; Dugan, Liam; Qin, Lianhui; Contreras-Ochando, Lidia; Morency, Louis-Philippe; Moschella, Luca; Lam, Lucas; Noble, Lucy; Schmidt, Ludwig; He, Luheng; Colón, Luis Oliveros; Metz, Luke; Şenel, Lütfi Kerem; Bosma, Maarten; Sap, Maarten; ter Hoeve, Maartje; Farooqi, Maheen; Faruqui, Manaal; Mazeika, Mantas; Baturan, Marco; Marelli, Marco; Maru, Marco; Quintana, Maria Jose Ramírez; Tolkiehn, Marie; Giulianelli, Mario; Lewis, Martha; Potthast, Martin; Leavitt, Matthew L; Hagen, Matthias; Schubert, Mátyás; Baitemirova, Medina Orduna; Arnaud, Melody; McElrath, Melvin; Yee, Michael A; Cohen, Michael; Gu, Michael; Ivanitskiy, Michael; Starritt, Michael; Strube, Michael; Swędrowski, Michał; Bevilacqua, Michele; Yasunaga, Michihiro; Kale, Mihir; Cain, Mike; Xu, Mimee; Suzgun, Mirac; Walker, Mitch; Tiwari, Mo; Bansal, Mohit; Aminnaseri, Moin; Geva, Mor; Gheini, Mozhdeh; T, Mukund Varma; Peng, Nanyun; Chi, Nathan A; Lee, Nayeon; Krakover, Neta Gur-Ari; Cameron, Nicholas; Roberts, Nicholas; Doiron, Nick; Martinez, Nicole; Nangia, Nikita; Deckers, Niklas; Muennighoff, Niklas; Keskar, Nitish Shirish; Iyer, Niveditha S; Constant, Noah; Fiedel, Noah; Wen, Nuan; Zhang, Oliver; Agha, Omar; Elbaghdadi, Omar; Levy, Omer; Evans, Owain; Casares, Pablo Antonio Moreno; Doshi, Parth; Fung, Pascale; Liang, Paul Pu; Vicol, Paul; Alipoormolabashi, Pegah; Liao, Peiyuan; Liang, Percy; Chang, Peter; Eckersley, Peter; Htut, Phu Mon; Hwang, Pinyu; Miłkowski, Piotr; Patil, Piyush; Pezeshkpour, Pouya; Oli, Priti; Mei, Qiaozhu; Lyu, Qing; Chen, Qinlang; Banjade, Rabin; Rudolph, Rachel Etta; Gabriel, Raefer; Habacker, Rahel; Risco, Ramon; Millière, Raphaël; Garg, Rhythm; Barnes, Richard; Saurous, Rif A; Arakawa, Riku; Raymaekers, Robbe; Frank, Robert; Sikand, Rohan; Novak, Roman; Sitelew, Roman; LeBras, Ronan; Liu, Rosanne; Jacobs, Rowan; Zhang, Rui; Salakhutdinov, Ruslan; Chi, Ryan; Lee, Ryan; Stovall, Ryan; Teehan, Ryan; Yang, Rylan; Singh, Sahib; Mohammad, Saif M; Anand, Sajant; Dillavou, Sam; Shleifer, Sam; Wiseman, Sam; Gruetter, Samuel; Bowman, Samuel R; Schoenholz, Samuel S; Han, Sanghyun; Kwatra, Sanjeev; Rous, Sarah A; Ghazarian, Sarik; Ghosh, Sayan; Casey, Sean; Bischoff, Sebastian; Gehrmann, Sebastian; Schuster, Sebastian; Sadeghi, Sepideh; Hamdan, Shadi; Zhou, Sharon; Srivastava, Shashank; Shi, Sherry; Singh, Shikhar; Asaadi, Shima; Gu, Shixiang Shane; Pachchigar, Shubh; Toshniwal, Shubham; Upadhyay, Shyam; Shyamolima; Debnath; Shakeri, Siamak; Thormeyer, Simon; Melzi, Simone; Reddy, Siva; Makini, Sneha Priscilla; Lee, Soo-Hwan; Torene, Spencer; Hatwar, Sriharsha; Dehaene, Stanislas; Divic, Stefan; Ermon, Stefano; Biderman, Stella; Lin, Stephanie; Prasad, Stephen; Piantadosi, Steven T; Shieber, Stuart M; Misherghi, Summer; Kiritchenko, Svetlana; Mishra, Swaroop; Linzen, Tal; Schuster, Tal; Li, Tao; Yu, Tao; Ali, Tariq; Hashimoto, Tatsu; Wu, Te-Lin; Desbordes, Théo; Rothschild, Theodore; Phan, Thomas; Wang, Tianle; Nkinyili, Tiberius; Schick, Timo; Kornev, Timofei; Tunduny, Titus; Gerstenberg, Tobias; Chang, Trenton; Neeraj, Trishala; Khot, Tushar; Shultz, Tyler; Shaham, Uri; Misra, Vedant; Demberg, Vera; Nyamai, Victoria; Raunak, Vikas; Ramasesh, Vinay; Prabhu, Vinay Uday; Padmakumar, Vishakh; Srikumar, Vivek; Fedus, William; Saunders, William; Zhang, William; Vossen, Wout; Ren, Xiang; Tong, Xiaoyu; Zhao, Xinran; Wu, Xinyi; Shen, Xudong; Yaghoobzadeh, Yadollah; Lakretz, Yair; Song, Yangqiu; Bahri, Yasaman; Choi, Yejin; Yang, Yichi; Hao, Yiding; Chen, Yifu; Belinkov, Yonatan; Hou, Yu; Hou, Yufang; Bai, Yuntao; Seid, Zachary; Zhao, Zhuoye; Wang, Zijian; Wang, Zijie J; Wang, Zirui; Wu, Ziyi (2022).

  Language models demonstrate both quantitative improvement and new qualitative textlessptextgreatercapabilities with increasing scale. Despite their potentially transformative textlessptextgreaterimpact, these new capabilities are as yet poorly characterized. In order to textlessptextgreaterinform future research, prepare for disruptive new model capabilities, and textlessptextgreaterameliorate socially harmful effects, it is vital that we understand the present textlessptextgreaterand near-future capabilities and limitations of language models. To address textlessptextgreaterthis challenge, we introduce the Beyond the Imitation Game benchmark \textlessp\textgreater(BIG-bench). BIG-bench currently consists of 204 tasks, contributed by 450 textlessptextgreaterauthors across 132 institutions. Task topics are diverse, drawing problems from textlessptextgreaterlinguistics, childhood development, math, common-sense reasoning, biology, textlessptextgreaterphysics, social bias, software development, and beyond. BIG-bench focuses on textlessptextgreatertasks that are believed to be beyond the capabilities of current language textlessptextgreatermodels. We evaluate the behavior of OpenAI's GPT models, Google-internal dense textlessptextgreatertransformer architectures, and Switch-style sparse transformers on BIG-bench, textlessptextgreateracross model sizes spanning millions to hundreds of billions of parameters. In textlessptextgreateraddition, a team of human expert raters performed all tasks in order to provide textlessptextgreatera strong baseline. Findings include: model performance and calibration both textlessptextgreaterimprove with scale, but are poor in absolute terms (and when compared with \textlessp\textgreaterrater performance); performance is remarkably similar across model classes, textlessptextgreaterthough with benefits from sparsity; tasks that improve gradually and textlessptextgreaterpredictably commonly involve a large knowledge or memorization component, textlessptextgreaterwhereas tasks that exhibit "breakthrough" behavior at a critical scale often textlessptextgreaterinvolve multiple steps or components, or brittle metrics; social bias typically textlessptextgreaterincreases with scale in settings with ambiguous context, but this can be textlessptextgreaterimproved with prompting.
• In-Depth Analysis and Systematic Literature Review on Risk Based Access Control in Cloud. Sadia Hussain, M. Hasan Islam; Abbas, Haider (M. H. I. Sadia Hussain; H. Abbas, eds.) (2022). 12(9) 1–22.

  Security in Cloud is one of the most foremost and critical feature, which can ensure the confidence of the Scientific community on Cloud environment. With the dynamic and ever changing nature of the Cloud computing environment, static access control models become obsolete. Hence, dynamic access control models are required, which is still an emergent and underdeveloped domain in Cloud security. These models utilize not only access policies but also contextual and real-time information to determine the access decision. Out of these dynamic models the Risk-based Access control model, estimates the security risk value related to the access request dynamically to determine the access decision. The exclusive working pattern of this access control model makes it an excellent choice for dynamically changing environment that rules the cloud’s environment. This paper provides a systematic literature appraisal and evaluation of risk-based access control models to provide a detailed understanding of the topic. The contributions of selected articles have been summarized. The security risks in cloud environment have been reviewed, taking in the account of both Cloud Service Provider and Cloud Customer perspectives. Additionally, risk factors used to build the risk-based access control model were extracted and analyzed. Finally, the risk estimation techniques used to evaluate the risks of access control operations have also been identified.
• Physical Properties of Trojan and Centaur Asteroids. Barueci, M A; Cruikshank, D P; Mottola, S; Lazzarin, M (2021).

  Trojans and Centaurs are primitive, peculiar objects orbiting in the middle solar system. Both groups characteristically have low albedos and red colors. Physical observations of Trojans reveal featureless reddish spectra, implying surfaces probably rich in complex organic solid materials. The interiors are expected to be rich in H2O ice and other volatile material. Centaurs have surfaces showing dramatically different spectral reflectances, from neutral to very red. Some spectra are featureless, while others show signatures of water ice, methanol, or other light hydrocarbons. Trojans were formed near Jupiter’s orbit, while Centaurs were formed far beyond Jupiter’s orbit, but both were formed at low temperatures at which water exists as solid ice.
• Narrating Being through Phenomena: The Phenomenological and Sociological Insights of Harry Parker’s Anatomy of a Soldier. Gilks, Mark (2021). 35(5) 490–501.
• Analytical, Statistical Approximate Solution of Dissipative and Nondissipative Binary-Single Stellar Encounters. Ginat, Yonadav Barry; Perets, Hagai B (2021). 11(3) 31020.

  We present a statistical approximate solution of the bound, nonhierarchical three-body problem, and extend it to a general analysis of encounters between hard binary systems and single stars. Any such encounter terminates when one of the three stars is ejected to infinity, leaving behind a remnant binary; the problem with binary-single-star scattering consists of finding the probability distribution of the orbital parameters of the remnant binary as a function of the total energy and the total angular momentum. Here, we model the encounter as a series of close, nonhierarchical, triple approaches, interspersed with hierarchical phases, in which the system consists of an inner binary and a star that orbits it; this series of approaches turns the evolution of the entire encounter to a random walk between consecutive hierarchical phases. We use the solution of the bound, nonhierarchical three-body problem to find the walker’s transition probabilities, which we generalize to situations in which tidal interactions are important. Besides tides, any dissipative process may be incorporated into the random-walk model, as it is completely general. Our approximate solution can reproduce the results of the extensive body of past numerical simulations and can account for different environments and different dissipative effects. Therefore, this model can effectively replace the need for direct few-body integrations for the study of binary-single encounters in any environment. Furthermore, it allows for a simply inclusion of dissipative forces typically not accounted for in full -body integration schemes.
• How to pretrain an efficient cross-disciplinary language model: The ScilitBERT use case. de la Broise, Jean-Baptiste; Bernard, Nolwenn; Dubuc, Jean-Philippe; Perlato, Andrea; Latard, Bastien in ICITR ’21 (2021). 1–6.
• How runaway stars boost galactic outflows. Andersson, Eric P; Agertz, Oscar; Renaud, Florent (2020). 494(3) 3328–3341.

  Roughly 10 per cent of OB stars are kicked out of their natal clusters before ending their life as supernovae. These so-called runaway stars can travel hundreds of parsecs into the low-density interstellar medium, where momentum and energy from stellar feedback is efficiently deposited. In this work, we explore how this mechanism affects large-scale properties of the galaxy, such as outflows. To do so we use a new model that treats OB stars and their associated feedback processes on a star-by-star basis. With this model, we compare two hydrodynamical simulations of Milky Way-like galaxies, one where we include runaways, and one where we ignore them. Including runaway stars leads to twice as many supernovae explosions in regions with gas densities ranging from \\($10\textasciicircum\-5\\textbackslash, \textbackslashmathrm\\textbackslash,cm\textasciicircum\-3\\\$\) to \\($10\textasciicircum\-3\\textbackslash, \textbackslashmathrm\\textbackslash,cm\textasciicircum\-3\\\$\). This results in more efficient heating of the inter-arm regions, and drives strong galactic winds with mass loading factors boosted by up to one order of magnitude. These outflows produce a more massive and extended multiphase circumgalactic medium, as well as a population of dense clouds in the halo. Conversely, since less energy and momentum is released in the dense star-forming regions, the cold phase of the interstellar medium is less disturbed by feedback effects.
• Knowledge-Based Categorization of Scientific Articles for Similarity Predictions. Bernard, Nolwenn; Weber, Jonathan; Forestier, Germain; Hassenforder, Michel; Latard, Bastien in TPDL ’20 (2020). 147–160.
• Moisture Sorption Isotherms and Isotherm Model Performance Evaluation for Food and Agricultural Products. Aviara, Ndubisi A. G. Kyzas, N. Lazaridis (eds.) (2020).

  Moisture sorption characteristics of agricultural and food products play important roles in such technological processes as drying, handling, packaging, storage, mixing, freeze-drying and other processes that require the prediction of food stability, shelf life, glass transition and estimation of drying time and texture and prevention of deteriorative reactions. They are useful in the computation of thermodynamic energies of moisture in the products. An understanding of moisture sorption phenomena in products, moisture sorption isotherm (MSI) determination techniques and moisture sorption isotherm model evaluation procedures would be useful in the development or selection, modeling and controlling as well as optimization of appropriate processes to make for enhanced efficiency. The phenomena addressed in this chapter are equilibrium moisture content (EMC)-water activity (aw) relationships and MSI types, temperature influence on isotherms and occurrence of moisture sorption hysteresis. MSI measurement techniques highlighted are the gravimetric, vapor pressure manometric (VPM), hygrometric and inverse gas chromatographic and the use of AquaLab equipment. Commonly used moisture sorption isotherm models (BET, GAB, modified GAB, Hailwood-Horrobin, modified Hailwood-Horrobin, modified Halsey, modified Henderson, modified Chung-Pfost and modified Oswin) were selected, and their evaluation procedures using moisture sorption data were outlined. Static gravimetric technique involving the use of saturated salt solution appears to be the most widely used and recommended method of determining the EMC of agricultural and food products. Most of the MSI models can be fitted to moisture sorption data thorough linearization by logarithmic transformation, while others can be solved using such expression as second-order polynomial. Model goodness of fit can be determined using standard (SE) error of estimate, coefficient of determination (R2), mean relative percentage deviation (P) and fraction explained variation (FEV). The acceptance of a model depends on the nature of its residual plots. A model is considered acceptable if the residual plots show uniform scatter around the horizontal value of zero showing no systemic tendency towards a clear pattern. A model is better than another model if it has lower SE, lower P, higher R2 and higher FEV. Although it appears as if a generalized MSI model is yet to exist, it is recommended that the Ngoddy-Bakker-Arkema (NBA) model should be given thorough going and extensive testing on the MSI of different categories of food as it could prove true to its generalized model posture due to the fundamental nature of its derivation.
• Large granulation cells on the surface of the giant star π1 Gruis. Paladini, C.; Baron, F.; Jorissen, A.; Le Bouquin, J.-B.; Freytag, B.; Van Eck, S.; Wittkowski, M.; Hron, J.; Chiavassa, A.; Berger, J.-P.; Siopis, C.; Mayer, A.; Sadowski, G.; Kravchenko, K.; Shetye, S.; Kerschbaum, F.; Kluska, J.; Ramstedt, S. (2018). 553(7688) 310–312.

  Convection plays a major part in many astrophysical processes, including energy transport, pulsation, dynamos and winds on evolved stars, in dust clouds and on brown dwarfs. Most of our knowledge about stellar convection has come from studying the Sun: about two million convective cells with typical sizes of around 2,000 kilometres across are present on the surface of the Sun-a phenomenon known as granulation. But on the surfaces of giant and supergiant stars there should be only a few large (several tens of thousands of times larger than those on the Sun) convective cells, owing to low surface gravity. Deriving the characteristic properties of convection (such as granule size and contrast) for the most evolved giant and supergiant stars is challenging because their photospheres are obscured by dust, which partially masks the convective patterns. These properties can be inferred from geometric model fitting, but this indirect method does not provide information about the physical origin of the convective cells. Here we report interferometric images of the surface of the evolved giant star π1 Gruis, of spectral type S5,7. Our images show a nearly circular, dust-free atmosphere, which is very compact and only weakly affected by molecular opacity. We find that the stellar surface has a complex convective pattern with an average intensity contrast of 12 per cent, which increases towards shorter wavelengths. We derive a characteristic horizontal granule size of about 1.2 × 1011 metres, which corresponds to 27 per cent of the diameter of the star. Our measurements fall along the scaling relations between granule size, effective temperature and surface gravity that are predicted by simulations of stellar surface convection.
• The prediction of moisture adsorption isotherm for commercial sodium bicarbonate powder. Clément, Yué Bi Yao; Djakalia, Bouatene; Clément, Akmel Djédjro; Kablan, Tano (2018). 9(3) 1829–1836.

  The quality of preserved sodium bicarbonate powder is largely dependent on its moisture content, moisture migration and moisture uptake of the sodium bicarbonate during storage. Therefore, the water activity level, which corresponds to a range of equilibrium moisture contents, must be determined by, for example, the use of moisture isotherms. Sorption isotherms are therefore of great importance in post-harvest procedures, especially for predicting drying and storage, which help to establish the final moisture content of the product under certain environmental condition. Moisture sorption isotherm of sodium bicarbonate powder was determined at laboratory condition (29 ± 1°C) and relative humidity (7-97%), using the standard static gravimetric method. Adsorption isotherm of sodium bicarbonate was type III following Brunauer’s classification. Equilibrium moisture content data were correlated by several equations including two-parameter equations (BET, Kuhn, Hasley, and Oswin), three parameter equation (GAB); and the GAB equation presented the best adjustment for the data over the range of water activities investigated, according to statistical procedures. However, results demonstrated that the BET and Kuhn equations described the sodium bicarbonate adsorption isotherm much better than the GAB equation for the range of water activity ranging from 0.07 to 0.5. The content of water adsorbed in the monomolecular layer was calculated (GABXm = 4.702 g H2O/100 g solids; BETXm = 7.442 g H2O/100 g solids).
• In Search of Actionable Patterns of Lowest Cost - A Scalable Graph Method. Tzacheva, Angelina A. (2018). 10(6) 1–19.

  Action Rules are rule based systems for discovering actionable patterns which are hidden in a large dataset. All recommended patterns from Action Rules incur some form of cost to the users. It is obvious that recommendations are interesting to the users only if the cost that the user pays for the recommended actions is low. In other words, the recommendations should be profitable or valuable to the user when they perform a chain of actions, at the lowest possible cost. In the modern era of big data, organizations are collecting massive amounts of data, growing constantly. Finding low cost actionable patterns for such large data in these domains, is time consuming and requires a scalable approach. In this work, we introduce the notion of Action Graph and propose an algorithm to search the Action Graph for actionable patterns of lowest cost. We apply the proposed algorithm to three datasets in transportation, medical, and business domains. Results show how these domains can benefit from the discovered actionable recommendations of low cost.
• Global 3D radiation-hydrodynamics models of AGB stars: Effects of convection and radial pulsations on atmospheric structures. Freytag, B.; Liljegren, S.; Höfner, S. (2017). 600 A137.

  Context. Observations of asymptotic giant branch (AGB) stars with increasing spatial resolution reveal new layers of complexity of atmospheric processes on a variety of scales. Aims. To analyze the physical mechanisms that cause asymmetries and surface structures in observed images, we use detailed 3D dynamical simulations of AGB stars; these simulations self-consistently describe convection and pulsations. Methods. We used the CO5BOLD radiation-hydrodynamics code to produce an exploratory grid of global “star-in-a-box” models of the outer convective envelope and the inner atmosphere of AGB stars to study convection, pulsations, and shock waves and their dependence on stellar and numerical parameters. Results. The model dynamics are governed by the interaction of long-lasting giant convection cells, short-lived surface granules, and strong, radial, fundamental-mode pulsations. Radial pulsations and shorter wavelength, traveling, acoustic waves induce shocks on various scales in the atmosphere. Convection, waves, and shocks all contribute to the dynamical pressure and, thus, to an increase of the stellar radius and to a levitation of material into layers where dust can form. Consequently, the resulting relation of pulsation period and stellar radius is shifted toward larger radii compared to that of non-linear 1D models. The dependence of pulsation period on luminosity agrees well with observed relations. The interaction of the pulsation mode with the non-stationary convective flow causes occasional amplitude changes and phase shifts. The regularity of the pulsations decreases with decreasing gravity as the relative size of convection cells increases. The model stars do not have a well-defined surface. Instead, the light is emitted from a very extended inhomogeneous atmosphere with a complex dynamic pattern of high-contrast features. Conclusions. Our models self-consistently describe convection, convectively generated acoustic noise, fundamental-mode radial pulsations, and atmospheric shocks of various scales, which give rise to complex changing structures in the atmospheres of AGB stars.
• A Comparison of Four Series of CISCO Network Processors. Sadaf Abaei Senejani1, Hossein Karimi2 (2016).
• Radial velocities of K–M dwarfs and local stellar kinematics. Sperauskas, J; Bartašiūtė, S; Boyle, R P; Deveikis, V; Raudeliūnas, S; Upgren, A R (2016). 596 A116-A116.

  Aims. The goal of this paper is to present complete radial-velocity data for the spectroscopically selected McCormick sample of nearby K-M dwarfs and, based on these and supplementary data, to determine the space-velocity distributions of late-type stars in the solar neighborhood. Methods. We analyzed nearly 3300 measurements of radial velocities for 1049 K-M dwarfs, that we obtained during the past decade with a CORAVEL-type instrument, with a primary emphasis on detecting and eliminating from kinematic calculations the spectroscopic binaries and binary candidates. Combining radial-velocity data with Hipparcos/Tycho-2 astrometry we calculated the space-velocity components and parameters of the galactic orbits in a three-component model potential for the stars in the sample, that we use for kinematical analysis and for the identification of possible candidate members of nearby stellar kinematic groups. Results. We present the catalog of our observations of radial velocities for 959 stars which are not suspected of velocity variability, along with the catalog of U,V,W velocities and Galactic orbital parameters for a total of 1088 K-M stars which are used in the present kinematic analysis. Of these, 146 stars were identified as possible candidate members of the known nearby kinematic groups and suspected subgroups. The distributions of space-velocity components, orbital eccentricities, and maximum distances from the Galactic plane are consistent with the presence of young, intermediate-age and old populations of the thin disk and a small fraction (\textasciitilde3\%) of stars with the thick disk kinematics. The kinematic structure gives evidence that the bulk of K-M type stars in the immediate solar vicinity represents a dynamically relaxed stellar population. The star MCC 869 is found to be on a retrograde Galactic orbit (V = -262 km s-1) of low inclination (4°) and can be a member of stellar stream of some dissolved structure. The Sun's velocity with respect to the Local Standard of Rest, derived from the distributions of space-velocity components, is (UȮ,VȮ,WȮ) = (9.0 ± 1.4,13.1 ± 0.6,7.2 ± 0.8) km s-1. The radial solar motion derived via the Strömberg's relation, VȮ = 14.2 ± 0.8 km s-1, agrees within the errors with the value obtained directly from the V distribution of stars on nearly circular orbits.
• FLARES ON A-TYPE STARS: EVIDENCE FOR HEATING OF SOLAR CORONA BY NANOFLARES?. Švanda, Michal; Karlický, Marian (2016). 831(1) 9.

  We analyzed the occurrence rates of flares on stars of spectral types K, G, F, and A, observed by Kepler. We found that the histogram of occurrence frequencies of stellar flares is systematically shifted toward a high-energy tail for A-type stars compared to stars of cooler spectral types. We extrapolated the fitted power laws toward flares with smaller energies (nanoflares) and made estimates for total energy flux to stellar atmospheres by flares. We found that, for A-type stars, the total energy flux density was at least four-times smaller than for G stars. We speculate that this deficit in energy supply may explain the lack of hot coronae on A-type stars. Our results indicate the importance of nanoflares for heating and formation of the solar corona.
• Leksičke posebnosti Milićevićevih publikacija Budimir, Irina (2015).
• Sorption properties of sodium bicarbonate. Walawska, Barbara; Szymanek, Arkadiusz; Pajdak, Anna; Nowak, Marzena; Hala, Bożena (2012). (Vol. 66) 1169–1176.
• Effects of capillary condensation on the caking of bulk sucrose. Billings, S.W.; Bronlund, J.E.; Paterson, A.H.J. (2006). 77(4) 887–895.

  Caking in sucrose is a major problem for the sugar industry, especially during transportation. Liquid bridging in sucrose is the first step towards caking. This paper demonstrates, by measuring the strength of the liquid bridges and then the strength of the subsequently formed solid bridges under different water activity conditions that the critical water activity for initiation of caking is about 0.8. The identification of this point allows the conditions under which bulk sucrose is stored and transported to be specified to prevent the occurrence of water activities going above this critical level to eliminate caking.
• Water activity in concentrated sucrose solutions and its consequences for the availability of water in the film of syrup surrounding the sugar crystal. Starzak, Maciej; Mathlouthi, Mohamed (2002). 127 175–185.

  A thermodynamically rigorous chemical model of water activity in the sucrose-water system is proposed. The model covers practically the entire composition range including very high sugar concentrations. It employs the concept of the semi-ideal solution according to which all the departures from ideal behavior are attributed to chemical reactions occurring in the system, while physical interactions are neglected. The model accounts for sucrose hydration and clustering as well as water association. All the reactions are assumed to attain chemical equilibrium. Two different mechanisms of sucrose hydration (linear and bridging) are included. The concept of independent binding sites, originally proposed by Schönert (1986), has been extended to describe both the probability of sucrose/water and sucrose/sucrose interactions. An equilibrium "mixture" model of liquid water, involving the formation of simple water clusters, has been incorporated in order to account for the water/water interactions. Experimental data (vapor pressure, boiling point elevation, equilibrium relative humidity, and heat of dilution) from selected literature sources have been used to validate the model and estimate its parameters. The proposed model can be used as a mathematical tool in solving various practical problems encountered in the sugar and food industry, such as the behavior of crystalline sugar during conditioning and storage, stickiness, re-crystallization of amorphous sugar, its stability in foods and pharmaceuticals. It is postulated that the driving force for migration of water from sugar crystals should be defined in terms of the water activity rather than the nominal content of water in solution. Diffusion processes occurring in the film of syrup surrounding the sugar crystal are briefly outlined. The key role of sucrose hydration and clustering in establishing the driving force of monomeric water in the syrup film is discussed in detail.
• PISA 2000: Dokumentation der Erhebungsinstrumente Kunter, Mareike; Schümer, Gundel; Artelt, Cordula; Baumert, Jürgen; Klieme, Eckhard; Neubrand, Michael; Prenzel, Manfred; Schiefele, Ulrich; Schneider, Wolfgang; Stanat, Petra; Tillmann, Klaus-Jürgen; Weiß, Manfred (2002).
• The All-Variable Binary WR140 (HD 193793, WCT+O4, P=7.94 yr). Van Der Hucht, K.A; Williams, P.M; Pollock, A.M.T; Hidayat, B.; McCain, C.F; Spoelstra, T.A.Th; Wamsteker, W.M (1991). 143 251–251.

  Recently Williams et al. (1990, M.N.R.A.S. 243, 662) presented new observations of the W C 7 + 0 4 - 5 Wolf-Rayet system HD 193793 (WR140) made between 1979 and 1989 at infrared, radio, UV and X-ray wavelengths. Striking variations were evident in all four regimes.
• Advanced Combinatorics Comtet, Louis (1974). Springer Netherlands, Dordrecht.

  Notwithstanding its title, the reader will not find in this book a systematic account of this huge subject. Certain classical aspects have been passed by, and the true title ought to be "Various questions of elementary combina­ torial analysis". For instance, we only touch upon the subject of graphs and configurations, but there exists a very extensive and good literature on this subject. For this we refer the reader to the bibliography at the end of the volume. The true beginnings of combinatorial analysis (also called combina­ tory analysis) coincide with the beginnings of probability theory in the 17th century. For about two centuries it vanished as an autonomous sub­ ject. But the advance of statistics, with an ever-increasing demand for configurations as well as the advent and development of computers, have, beyond doubt, contributed to reinstating this subject after such a long period of negligence. For a long time the aim of combinatorial analysis was to count the different ways of arranging objects under given circumstances. Hence, many of the traditional problems of analysis or geometry which are con­ cerned at a certain moment with finite structures, have a combinatorial character. Today, combinatorial analysis is also relevant to problems of existence, estimation and structuration, like all other parts of mathema­ tics, but exclusively forjinite sets.
• Probability Breiman, Leo in Addison-Wesley Series in Statistics (1968). Addison-Wesley, Reading, Massachusetts.
• Differential thermal analysis of the decomposition of sodium bicarbonate and its simple double salts. Edward M. Barall, II; Rogers, L.B. (1966). 28(1) 41–51.

  The thermal decompositions of sodium bicarbonate, trona, and Wegscheider's salt (Na2CO3·3NaHCO3) have been studied in a closed system by means of differential thermal analysis (DTA) and X-ray diffraction analyses of reactants and products. The energies of activation of the thermal decompositions of these materials have been calculated from the differential thermograms using Kissinger's equations. The decomposition products of trona, sodium bicarbonate, and Wegscheider's salt have been identified by X-ray diffraction. A reaction sequence involving the formation of Wegscheider's salt has been proposed to explain the thermal anomalies previously observed in the decomposition of sodium bicarbonate in a closed system. A DTA cell design suitable for the study of decompositions and dehydrations in a sealed, self-generated atmosphere at constant pressure is described.
• Stellar Atmospheres; a Contribution to the Observational Study of High Temperature in the Reversing Layers of Stars. Payne, Cecilia Helena (1925).
• On the equilibrium of the Sun’s atmosphere. Schwarzschild, K. (1906). 195 41–53.

  In granulation, sun spots, and prominences, the sun's surface displays changing conditions and stormy variations. In order to understand the physical relations of these phenomena, it is customary, as first approximation, to subsititute mean steady-state conditions for these spatial and temporal variations, thus obtaining a mechanical or hydrostatic equilibrium of the solar atmosphere. Until now attention has generally been concentrated on the socalled adiabatic equilibrium, which is analogous to the conditions prevailing in our atmosphere when it has been thoroughly mixed by ascending and descending currents. In this paper I wish to call attention at another type of equilibrium, which we call radiative equilibrium. Radiative equilibrium in a strongly radiating and absorbing atmosphere will be established when radiative heat transfer predominates over heat transfer due to convective mixing. It would be difficult to decide a priori whether adiabatic or radiative equilibrium predominates in the sun. However, we have observational data from which we can come to some conclusions on this matter. The solar disc is not uniformly bright; in fact, the light intensity decreases with increasing distance from the center. With certain plausible assumptions it is possible to deduce the temperature distribution within the atmosphere from the intensity distribution at the surface. The result we obtain is that the equilibrium conditions of the solar atmosphere correspond generally to those of radiative equilibrium. Our considerations leading to this result require that Kirchhoff's law is valid, or, in other words, that radiation in the solar atmosphere is pure thermal radiation. We require further that conditions vary smoothly as we descend into the sun, so that there is no discontinuous transition between a more or less transparent chromosphere and an opaque photosphere consisting of luminous clouds. We neglect the effect of light-scattering due to atmospheric particles, whose importance A.textasciitildeSchuster first pointed out, as well as refraction, on which H.V.textasciitildeSeeliger bases his explanation of the observed brightness distribution. We further neglect the variation of absorption with wavelength, the decrease of gravity with height, and the spherical propagation of radiation. Thus our considerations are neither complete nor compelling, but by explaining a simple idea in its simplest form, they may form the basis for further speculations.