bluuebunny/crossref_metadata_2025 huggingface dataset:
On the non-global linear stability and spurious fixed points of MPRK schemes with negative RK parameters
Authors: Izgin Thomas , Kopecz Stefan , Meister Andreas , Schilling Amandine
Published: February 2024

Recently, a stability theory has been developed to study the linear stability of modified Patankar–Runge–Kutta (MPRK) schemes. This stability theory provides sufficient conditions for a fixed point of an MPRK scheme to be stable as well as for the convergence of an MPRK scheme towards the steady state of the corresponding initial value problem, whereas the main assumption is that the initial value is sufficiently close to the steady state. Initially, numerical experiments in several publications indicated that these linear stability properties are not only local but even global, as is the case for general linear methods. Recently, however, it was discovered that the linear stability of the MPDeC(8) scheme is indeed only local in nature. Our conjecture is that this is a result of negative Runge–Kutta (RK) parameters of MPDeC(8) and that linear stability is indeed global if the RK parameters are nonnegative. To support this conjecture, we examine the family of MPRK22($$\varvec{\alpha }$$

α

) methods with negative RK parameters and show that even among these methods there are methods for which the stability properties are only local. However, this local linear stability is not observed for MPRK22($$\alpha $$
α
) schemes with nonnegative Runge–Kutta parameters. In particular, it is shown that MPRK22($$\alpha $$
α
) schemes with $$0<\alpha <0.5$$

0
<
α
<
0.5

or $$-0.5<\alpha <0$$

-
0.5
<
α
<
0

are only stable if the time step size is sufficiently small. But schemes with $$\alpha \le -0.5$$

α
≤
-
0.5

are stable and converge towards the steady state of the initial value problems for all time step sizes, at least for the test problem under consideration. Furthermore, it is shown that for some of the latter systems, the initial values must actually be close enough to the steady state to guarantee this result.
Root anatomy and biomechanical properties: improving predictions through root cortical and stele properties
Authors: Meijer G. J. , Lynch J. P. , Chimungu J. G. , Loades K. W.
Published: February 2024

Purpose

Quantifying the stability of individual plants or their contribution to soil reinforcement against erosion or landslides requires an understanding of the tensile properties of their roots. This work developed a new analytical model to understand the tensile stress–strain behaviour of a single root axis, which is the first to incorporating root anatomical features, in order to reduce the existing uncertainty in predictions.

Methods

The root was modelled as a linear elastic stele connected to a surrounding linear elastic cortex by means of a linear elastic stele–cortex interface. By solving for force equilibrium, an analytical solution for the full tensile stress–strain behaviour — including any intermediate brittle failures of the stele, cortex and/or interface — was obtained. This model was compared to tensile tests and laser ablation tomography for maize roots.

Results

The new modelling approach demonstrated that the root tensile strength is fully determined by the strength of the stele alone, which was an order of magnitude larger than that of the cortex while also 3–4 times stiffer. The reduction in root stiffness beyond the yield point was linked to continuing fracturing of the cortex and debonding along the stele–cortex interface. A larger proportion of the variation in experimentally measured biomechanical characteristics could be explained compared to root diameter power-law fitting methods typically applied in the literature.

Conclusion

Stele and cortex biomechanical properties are substantially different, affecting the tensile behaviour of plant roots. Accounting for these anatomical traits increased the accuracy root biomechanical properties from tensile tests.
A deflationary approach to legal ontology
Authors: Garcia-Godinez Miguel
Published: February 2024

Contra recent, inflationary views, the paper submits a deflationary approach to legal ontology. It argues, in particular, that to answer ontological questions about legal entities, we only need conceptual analysis and empirical investigation. In developing this proposal, it follows Amie Thomasson’s ‘easy ontology’ and her strategy for answering whether ordinary objects exist. The purpose of this is to advance a theory that, on the one hand, does not fall prey to sceptical views about legal reality (viz., that ontological truths about legal entities are established by metaphysical principles); and, on the other, is compatible with common-sense jurisprudence (viz., that there in fact exist legal entities, and they all have important practical implications). While this methodology is common to legal philosophers interested in elucidating the ‘artifactual nature’ of law, the paper departs from their projects by taking a step forward in connecting this deflationary approach to legal ontology with an expressivist account of legal discourse, thus providing enough resources to satisfy the general ambition of jurisprudence, viz., to establish the conditions for the analysis of legal reality and its normative character.
The co-determination decision game with consumption externalities
Authors: Gori Luca , Fanti Luciano
Published: February 2024

This work aims to investigate the effects of co-determination in a game-theoretic setting by considering network externalities in consumption. The received theoretical literature, so far focused only on standard (non-network) industries, showed that co-determination might emerge as the sub-game perfect Nash equilibrium (SPNE) of a non-cooperative Cournot duopoly, but this outcome generates a prisoner’s dilemma. The present research shows that (positive) network externalities may solve the prisoner’s dilemma and let co-determination become a Pareto-efficient SPNE with homogeneous or heterogeneous products. In a network industry, co-determination becomes a Pareto-superior institution for society, as firms, consumers and workers are better off than under profit maximisation. These results hold for exogenous (homogeneous and heterogeneous) co-determination and endogenous co-determination.
Internal erosion of a gap-graded soil and influences on the critical state
Authors: Li Shijin , Russell Adrian R. , Muir Wood David
Published: February 2024

Water retaining structures are critical elements of civil infrastructure. Internal erosion of soils forming the containment structures may occur progressively and lead to expensive maintenance costs or failures. The strength, stress–strain behavior and critical state of soils which have eroded, as well as the characteristics of the erosion, may be affected by hydraulic gradient, confining stress and relative density of the soil at the start of the erosion. Here, erosion and triaxial tests have been conducted on gap-graded soil samples. The tests and results are novel as the samples were prepared to be homogenous post-erosion and prior to triaxial testing by adopting a new sample formation procedure. The post-erosion homogeneity was evaluated in terms of particle size distribution and void ratio along a sample’s length. The erosion-induced mechanical property changes can then be linked to a measure of initial state, more reliably than when erosion causes samples to be heterogeneous. The results show that erosion causes the critical state line in the compression plane to move upwards. The movement is lesser than the increase in void ratio caused by erosion. The state parameter is therefore reduced, consistent with the soil’s reduced peak strength and its less dilative response. Regarding the erosion characteristics, the flow rate decreases with the increase in initial relative density or effective stress, but increases with the increase in the hydraulic gradient being applied. The cumulative eroded soil mass increases with the increase in hydraulic gradient and decreases with the increase in initial density and effective confining stress.
Deep learning-accelerated image reconstruction in back pain-MRI imaging: reduction of acquisition time and improvement of image quality
Authors: Estler Arne , Hauser Till-Karsten , Brunnée Merle , Zerweck Leonie , Richter Vivien , Knoppik Jessica , Örgel Anja , Bürkle Eva , Adib Sasan Darius , Hengel Holger , Nikolaou Konstantin , Ernemann Ulrike , Gohla Georg
Published: February 2024

Introduction

Low back pain is a global health issue causing disability and missed work days. Commonly used MRI scans including T1-weighted and T2-weighted images provide detailed information of the spine and surrounding tissues. Artificial intelligence showed promise in improving image quality and simultaneously reducing scan time. This study evaluates the performance of deep learning (DL)-based T2 turbo spin-echo (TSE, T2DLR) and T1 TSE (T1DLR) in lumbar spine imaging regarding acquisition time, image quality, artifact resistance, and diagnostic confidence.

Material and methods

This retrospective monocentric study included 60 patients with lower back pain who underwent lumbar spinal MRI between February and April 2023. MRI parameters and DL reconstruction (DLR) techniques were utilized to acquire images. Two neuroradiologists independently evaluated image datasets based on various parameters using a 4-point Likert scale.

Results

Accelerated imaging showed significantly less image noise and artifacts, as well as better image sharpness, compared to standard imaging. Overall image quality and diagnostic confidence were higher in accelerated imaging. Relevant disk herniations and spinal fractures were detected in both DLR and conventional images. Both readers favored accelerated imaging in the majority of examinations. The lumbar spine examination time was cut by 61% in accelerated imaging compared to standard imaging.

Conclusion

In conclusion, the utilization of deep learning-based image reconstruction techniques in lumbar spinal imaging resulted in significant time savings of up to 61% compared to standard imaging, while also improving image quality and diagnostic confidence. These findings highlight the potential of these techniques to enhance efficiency and accuracy in clinical practice for patients with lower back pain.
A Novel X-ray Diffraction Procedure for Determining Residual Stresses Around Cold Expanded Holes
Authors: Backman David , Li Linxi , Sa Jong Hyun , Pineault James , Carlson Scott , Stanfield Marcus
Published: February 2024

The continued interest in developing more accurate finite element models of the cold expansion process has driven the need for better measurement methodologies. This work details an x-ray diffraction (XRD) procedure explicitly designed to determine the residual stresses around a cold expanded hole. Aluminum coupons from two different alloys (2024-T351 and 7075-T651), with nominally 12-mm-diameter holes, were cold expanded to two different levels of applied expansion and measured using XRD. The results of a limited interlaboratory study highlight the reproducibility that one may expect to achieve by its application. For the majority of data points, the residual stresses characterized at each of the two laboratories were in agreement within the bounds of the residual stress determination experimental uncertainties, which were generally ± 15 MPa or less. After examining the differences between results obtained at each laboratory as a function of radial distance from the hole, it was found that no significant systematic error exists between data sets. Thus, the proposed novel procedure appears to provide a more precise and accurate determination of the residual stresses around cold expanded holes with a significant reduction in measurement uncertainty compared to conventional XRD measurement procedures. The results obtained using this novel procedure will be useful in calibrating new computational material models of the expansion process.
Review of robotic surgery platforms and end effectors
Authors: Cepolina Francesco , Razzoli Roberto
Published: February 2024

In the last 50 years, the number of companies producing automated devices for surgical operations has grown extensively. The population started to be more confident about the technology capabilities. The first patents related to surgical robotics are expiring and this knowledge is becoming a common base for the development of future surgical robotics. The review describes some of the most popular companies manufacturing surgical robots. The list of the company does not pretend to be exhaustive but wishes to give an overview of the sector. Due to space constraints, only a limited selction of companies is reported. Most of the companies described are born in America or Europe. Advantages and limitations of each product firm are described. A special focus is given to the end effectors; their shape and dexterity are crucial for the positive outcome of the surgical operations. New robots are developed every year, and existing robots are allowed to perform a wider range of procedures. Robotic technologies improve the abilities of surgeons in the domains of urology, gynecology, neurology, spine surgery, orthopedic reconstruction (knee, shoulder), hair restoration, oral surgery, thoracic surgery, laparoscopic surgery, and endoscopy.
How Competition for Funding Impacts Scientific Practice: Building Pre-fab Houses but no Cathedrals
Authors: Meirmans Stephanie
Published: February 2024

In the research integrity literature, funding plays two different roles: it is thought to elevate questionable research practices (QRPs) due to perverse incentives, and it is a potential actor to incentivize research integrity standards. Recent studies, asking funders, have emphasized the importance of the latter. However, the perspective of active researchers on the impact of competitive research funding on science has not been explored yet. Here, I address this issue by conducting a series of group sessions with researchers in two different countries with different degrees of competition for funding, from three scientific fields (medical sciences, natural sciences, humanities), and in two different career stages (permanent versus temporary employment). Researchers across all groups experienced that competition for funding shapes science, with many unintended negative consequences. Intriguingly, these consequences had little to do with the type of QRPs typically being presented in the research integrity literature. Instead, the researchers pointed out that funding could result in predictable, fashionable, short-sighted, and overpromising science. This was seen as highly problematic: scientists experienced that the ‘projectification’ of science makes it more and more difficult to do any science of real importance: plunging into the unknown or addressing big issues that need a long-term horizon to mature. They also problematized unintended negative effects from collaboration and strategizing. I suggest it may be time to move away from a focus on QRPs in connection with funding, and rather address the real problems. Such a shift may then call for entirely different types of policy actions.
The Effect of Recruitment Maneuvers on Cerebrovascular Dynamics and Right Ventricular Function in Patients with Acute Brain Injury: A Single-Center Prospective Study
Authors: Sanfilippo Filippo , Uryga Agnieszka , Ball Lorenzo , Battaglini Denise , Iavarone Ida Giorgia , Smielewski Peter , Beqiri Erta , Czosnyka Marek , Patroniti Nicolò , Robba Chiara
Published: February 2024

Background

Optimization of ventilatory settings is challenging for patients in the neurointensive care unit, requiring a balance between precise gas exchange control, lung protection, and managing hemodynamic effects of positive pressure ventilation. Although recruitment maneuvers (RMs) may enhance oxygenation, they could also exert profound undesirable systemic impacts.

Methods

The single-center, prospective study investigated the effects of RMs (up-titration of positive end-expiratory pressure) on multimodal neuromonitoring in patients with acute brain injury. Our primary focus was on intracranial pressure and secondarily on cerebral perfusion pressure (CPP) and other neurological parameters: cerebral autoregulation [pressure reactivity index (PRx)] and regional cerebral oxygenation (rSO2). We also assessed blood pressure and right ventricular (RV) function evaluated using tricuspid annular plane systolic excursion. Results are expressed as the difference (Δ) from baseline values obtained after completing the RMs.

Results

Thirty-two patients were enrolled in the study. RMs resulted in increased intracranial pressure (Δ = 4.8 mm Hg) and reduced CPP (ΔCPP = −12.8 mm Hg) and mean arterial pressure (difference in mean arterial pressure = −5.2 mm Hg) (all p < 0.001). Cerebral autoregulation worsened (ΔPRx = 0.31 a.u.; p < 0.001). Despite higher systemic oxygenation (difference in partial pressure of O2 = 4 mm Hg; p = 0.001) and unchanged carbon dioxide levels, rSO2 marginally decreased (ΔrSO2 = −0.5%; p = 0.031), with a significant drop in arterial content and increase in the venous content. RV systolic function decreased (difference in tricuspid annular plane systolic excursion = −0.1 cm; p < 0.001) with a tendency toward increased RV basal diameter (p = 0.06). Grouping patients according to ΔCPP or ΔPRx revealed that those with poorer tolerance to RMs had higher CPP (p = 0.040) and a larger RV basal diameter (p = 0.034) at baseline.

Conclusions

In patients with acute brain injury, RMs appear to have adverse effects on cerebral hemodynamics. These findings might be partially explained by RM’s impact on RV function. Further advanced echocardiography monitoring is required to prove this hypothesis.
Das Erziehungsziel einer selbstbestimmten Persönlichkeit weiter denken!
Authors: Patjens Rainer
Published: February 2024

Mit dem Kinder- und Jugendstärkungsgesetz hat der Gesetzgeber 2021 die Entwicklung zu einer selbstbestimmten Persönlichkeit als Erziehungsziel im SGB VIII normiert. Die rechtliche Bedeutung dieser Ergänzung ist umstritten, jedoch handelt es sich nach der Vorstellung des Gesetzgebers um eine programmatische Vorgabe, ohne dass damit der Leistungsumfang verändert werden soll. Jedoch kommt es in Hinblick auf die Unterstützung bei der Persönlichkeitsentwicklung maßgeblich darauf an, den Zugang zu Hilfen niederschwellig zu gestalten. Damit eröffnet sich auch argumentativ ein Zugang zu einer niederschwelligen oder sogar bedingungslosen Jugendhilfe, die sich insbesondere nicht an Defizitmerkmalen orientiert.
Improvement of thrombosis management in patients with cancer: a practical consensus document of recommendations for cancer-associated thrombosis patients’ healthcare in Spain
Authors: Muñoz Martín Andrés , Trujillo-Santos Antonio Javier , Martí Edelmira , Jara-Palomares Luis , Macías Montero Raquel , Gallardo Enrique , López-Núñez Juan José , Brozos-Vázquez Elena , Robles-Marinas Verónica , Pérez-Segura Pedro , Ruíz-Artacho Pedro
Published: February 2024

Cancer patients are at risk of venous thromboembolism (VTE), its recurrence, but also at risk of bleeding while anticoagulated. In addition, cancer therapies have been associated to increased VTE risk. Guidelines for VTE treatment in cancer patients recommend low molecular weight heparins (LMWH) or direct oral anticoagulants (DOAC) for the initial treatment, DOAC for VTE short-term treatment, and LMWH or DOAC for VTE long-term treatment. This consensus article arises from a collaboration between different Spanish experts on cancer-associated thrombosis. It aims to reach an agreement on a practical document of recommendations for action allowing the healthcare homogenization of cancer-associated thrombosis (CAT) patients in Spain considering not only what is known about VTE management in cancer patients but also what is done in Spanish hospitals in the clinical practice. The text summarizes the current knowledge and available evidence on the subject in Spain and provides a series of practical recommendations for CAT management and treatment algorithms to help clinicians to manage CAT over time.
Severe ulcerative colitis induced by COVID-19 vaccination
Authors: Taida Takashi , Kato Jun , Ishikawa Kentaro , Akizue Naoki , Ohta Yuki , Okimoto Kenichiro , Saito Keiko , Matsusaka Keisuke , Matsumura Tomoaki , Kato Naoya
Published: February 2024

A 37-year-old woman developed severe colitis with diffuse mucosal erythema and ulcerations throughout the entire colon after the 3rd vaccination of COVID-19. Stool culture was negative, and the pathological findings showed increased lymphoplasmacytic and neutrophilic infiltration in the colonic lamina propria, which were consistent with ulcerative colitis. After the treatment with anti-tumor necrosis factor-α agent, the ulceration markedly improved with development of severe colonic stenosis, which was successfully dilated with endoscopic balloon dilation. In case of COVID-19 vaccination, it should be noted that vaccination could be a trigger for the onset of UC.
Improved reproduction of Chelonus inanitus on Ephestia kuehniella highlights this factitious host as an alternative to the natural host Spodoptera littoralis
Authors: Morel Ariel , Sánchez-Ramos Ismael , Medina Pilar , Dáder Beatriz
Published: February 2024

Chelonus inanitus L. (Hymenoptera: Braconidae) is an egg-larval parasitoid of Lepidoptera, with the potential for biological control of noctuids. The lack of information merits research on its reproductive and developmental biology. We studied the reproduction of mated parasitoid pairs during female lifetime and the development of the progeny on two hosts, the factitious Ephestia kuehniella Zeller (Lepidoptera: Pyralidae) and the natural Spodoptera littoralis Boisduval (Lepidoptera: Noctuidae). The longevity of pairs subjected or not to parasitism was compared. Development of the progeny after parasitization and growth rates were studied. Reproduction decreased the longevity of both sexes in every host. The similar survival patterns proved that sex was not a factor influencing longevity. Females parasitized immediately after emergence and offspring production peaked at 2–2.5 days. Low parasitization rates (3–12%) were generally observed. Reproduction on S. littoralis was fourfold less efficient, probably due to failure of immature stages leading to poor progeny. Sex ratio of the progeny was mostly male-biased. Males developed faster in both hosts. Development was 20 days shorter in the natural host. Strikingly, the parasitoid performed successfully better on the factitious host. Inbreeding, poor understanding of host preference, and inadequate rearing and handling practices are discussed as possible causes of the worse parasitoid performance on S. littoralis.
Cause for coercion: cause for concern?
Authors: Smith Maxwell J.
Published: February 2024

In his 2000 book, From Chaos to Coercion: Detention and the Control of Tuberculosis, Richard Coker makes a number of important observations and arguments regarding the use of coercive public health measures in response to infectious disease threats. In particular, Coker argues that we have a tendency to neglect public health threats and then demand immediate action, which can leave policymakers with fewer effective options and may require (or may be perceived as requiring) more aggressive, coercive measures to achieve public health goals. While Coker makes a convincing case as to why we should find it ethically problematic when governments find themselves in this position and resort to coercion, left outstanding is the question of whether this should preclude governments and health authorities from using coercion if and when they do find themselves in this position. In this paper, I argue that, while we should consider it ethically objectionable when governments resort to coercion because they have neglected a public health threat, its causes, and other possible responses to that threat, this should not then necessarily rule out the use of coercion in such circumstances; that there are ethically objectionable antecedents for why coercion is being considered should not necessarily or automatically cause us to think coercion in such cases cannot be justified. I address an objection to this argument and draw several conclusions about how governments’ use of coercion in public health should be evaluated.
Generative Text-to-Image Diffusion for Automated Map Production Based on Geosocial Media Data
Authors: Dunkel Alexander , Burghardt Dirk , Gugulica Madalina
Published: February 2024

The state of generative AI has taken a leap forward with the availability of open source diffusion models. Here, we demonstrate an integrated workflow that uses text-to-image stable diffusion at its core to automatically generate icon maps such as for the area of the Großer Garten, a tourist hotspot in Dresden, Germany. The workflow is based on the aggregation of geosocial media data from Twitter, Flickr, Instagram and iNaturalist. This data are used to create diffusion prompts to account for the collective attribution of meaning and importance by the population in map generation. Specifically, we contribute methods for simplifying the variety of contexts communicated on social media through spatial clustering and semantic filtering for use in prompts, and then demonstrate how this human-contributed baseline data can be used in prompt engineering to automatically generate icon maps. Replacing labels on maps with expressive graphics has the general advantage of reaching a broader audience, such as children and other illiterate groups. For example, the resulting maps can be used to inform tourists of all backgrounds about important activities, points of interest, and landmarks without the need for translation. Several challenges are identified and possible future optimizations are described for different steps of the process. The code and data are fully provided and shared in several Jupyter notebooks, allowing for transparent replication of the workflow and adoption to other domains or datasets.
Review of host use and host reproduction number for New World fruit flies (Diptera: Tephritidae) to optimise surveillance, management and trade
Authors: Dominiak Bernard Charles , Follett Peter A.
Published: February 2024

Hosts of tephritids are known to vary in their capacity to support the life cycle from egg lay to adult. The Host Reproduction Number (HRN) is a measure of this capability and is defined as the number of adults that emerge from one kg of fruit. We collected data from the literature covering 26 New World fruit fly species in the genera, Anastrepha, Bactrocera, Ceratitis and Rhagoletis, on > 350 plant hosts. We provide the HRN where possible but only about 13% of tephritid-host data had HRN figures. More research is required to better understand the risks posed by New World tephritid-host relationships. For the tephritids of the world, there is a need to develop an appendix to ISPM 37 or new ISPM for each tephritid covering different hosts in different countries because one HRN does not fit all situations. A more country-based HRN will help to better inform and triage hosts for targeted surveillance programs, pest management and incursion response. Also, HRN would inform disinfestation activities associated with market access protocols. Therefore, a more HRN informed world will be better able to feed a growing world population using optimised risk management and trade.
Blow-Spun Si3N4-Incorporated Nanofibrous Dressing with Antibacterial, Anti-Inflammatory, and Angiogenic Activities for Chronic Wound Treatment
Authors: Ma Pengchao , Yang Chun-Yi , Li Chengli , Hu Peilun , Yang Fang , Lu Jiaju , Huang Yin-Yuan , Wu Hui , Wu Qiong , Pan Yongwei , Wang Xiumei
Published: February 2024

The effective and safe healing of chronic wounds, such as diabetic ulcers, presents a significant clinical challenge due to the adverse microenvironment in the wound that hinders essential processes of wound healing, including angiogenesis, inflammation resolution, and bacterial control. Therefore, there is an urgent demand for the development of safe and cost-effective multifunctional therapeutic dressings. Silicon nitride, with its distinctive antibacterial properties and bioactivities, shows great potential as a promising candidate for the treatment of chronic wounds. In this study, a silicon nitride-incorporated collagen/chitosan nanofibrous dressing (CCS) were successfully fabricated using the solution blow spinning technique (SBS). SBS offers compelling advantages in fabricating uniform nanofibers, resulting in a three-dimensional fluffy nanofibrous scaffold that creates an optimal wound healing environment. This blow-spun nanofibrous dressing exhibits excellent hygroscopicity and breathability, enabling effective absorption of wound exudate. Importantly, the incorporated silicon nitride within the fibers triggers surface chemical reactions in the aqueous environment, leading to the release of bioactive ions that modulate the wound microenvironment. Here, the CCS demonstrated exceptional capabilities in absorbing wound exudate, facilitating water vapor transmission, and displaying remarkable antibacterial properties in vitro and in a rat infected wound model (up to 99.7%, 4.5 × 107 CFU/cm2 for Staphylococcus aureus). Furthermore, the CCS exhibited an enhanced wound closure rate, angiogenesis, and anti-inflammatory effects in a rat diabetic wound model, compared to the control group without silicon nitride incorporation.

Graphical abstract
Effect of the incorporation of spent diatomaceous earths on the properties of alkaline activation cements based on sewage sludge ash
Authors: García-Díaz A. , Bueno-Rodríguez S. , Felipe-Sesé M. A. , Eliche-Quesada D.
Published: February 2024

The aim of this research is to evaluate the synergistic effect of the incorporation of spent diatomaceous earth (SDE) from beer filtration on the technological properties of alkaline-activated cements (AACs) based on sewage sludge ash (SSA). Pastes have been manufactured by mixing different amounts of precursor, SSA (30–70% by weight) and SDE (30–70% by weight). The cements were activated using a solution of sodium silicate (50% by weight) and sodium hydroxide (50% by weight NaOH with 8 M) as activator. A liquid/binder (l/b) ratio of 1.2 were used for cements with 30–40% by weight of SSA and 1.0 for binders with 50–70% by weight of SSA. The specimens were cured at room temperature for 7, 28 and 56 days. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used for the microstructural characterization of the AACs. The mix proportion of the precursors or the CaO/SiO ratio exerts a substantial impact on the physical, mechanical, and thermal characteristics of the examined AACs. Binders containing 40% by weight SSA and 60% by weight SDE show optimal technological properties, reaching compressive strengths of 32.8 and 36.8 MPa at 28 and 56 days of curing, respectively. This may be due to the formation of different gel types according to SEM analysis: a compact gel phase characterized by a fibrous structure corresponding to the N-(A)-S-H gel surrounding flatter and more uniform zones corresponding to the calcium aluminosilicate gel, C-A-S-H, and a mixed amorphous N,C-A-S-H gel. The results indicated that is possible to produce more sustainable alternative binding materials from the recovery of two types of waste: one from the wastewater treatment, and the other originating from the filtration process in the brewing industry.
Leadership turnover, winning coalition size and foreign policy realignment
Authors: Li Andrew X. , Zha Wen
Published: February 2024

Why do states realign their foreign policies toward a major power? Conventional wisdom holds that change in political leadership tends to result in less drastic foreign policy realignment in countries with large winning coalitions. The current study capitalizes on this conventional wisdom by invoking a key insight of the selectorate theory, the non-linear welfare function. Since the welfare of coalition members falls before it rises as the size of winning coalition becomes larger, one should expect the stabilizing effects of winning coalitions to be the weakest for low-to-medium sized winning coalitions. Thus, leadership turnover in countries with middle-sized winning coalitions is expected to result in greater foreign policy realignment than in countries with very large or very small coalitions. We test this theoretical proposition by studying the foreign policies of 154 countries towards China from 1972 to 2015. With newly constructed measures of leadership turnover and winning coalitions size, the evidence supports a non-linear relationship between change in leadership and foreign policy realignment along the continuum of winning coalition size.
Genomic technologies for detecting structural variations in hematologic malignancies
Authors: Jang Mi-Ae
Published: February 2024

Genomic structural variations in myeloid, lymphoid, and plasma cell neoplasms can provide key diagnostic, prognostic, and therapeutic information while elucidating the underlying disease biology. Several molecular diagnostic approaches play a central role in evaluating hematological malignancies. Traditional cytogenetic diagnostic assays, such as chromosome banding and fluorescence in situ hybridization, are essential components of the current diagnostic workup that guide clinical care for most hematologic malignancies. However, each assay has inherent limitations, including limited resolution for detecting small structural variations and low coverage, and can only detect alterations in the target regions. Recently, the rapid expansion and increasing availability of novel and comprehensive genomic technologies have led to their use in clinical laboratories for clinical management and translational research. This review aims to describe the clinical relevance of structural variations in hematologic malignancies and introduce genomic technologies that may facilitate personalized tumor characterization and treatment.
The Getty Research Portal: a decade of progress and developments for the future
Authors: Sallabedra Megan
Published: February 2024

At its inception in 2012, the Getty Research Portal shattered barriers that previously made digitized resources for art historical research challenging to locate and use without restriction. The Portal's first 10 years were marked by a period of immense growth, forging connections among collections through institutional partnerships. Flexible metadata requirements for contributing to the Portal allows large and small institutions alike to contribute a diverse range of collections but also present ongoing challenges. Work with partner institutions to identify priorities for metadata creation, cataloguing, and imaging has contributed to collection building on a global scale. Various forms of access to Portal materials have been developed alongside collection development efforts to meet new methods in art historical research. Looking to the future, the goals that were set out when the Portal was initiated continue to be the driving force behind what the Portal provides for an ever-evolving field. Ongoing work on the platform is intended to meet the shifting methodology of art historical research through the Portal's established collaborative model and open the door to new questions, new lines of inquiry, and ultimately new conclusions within art history.
New audiences in art libraries; new skills for professionals?
Authors: Trunel Lucile
Published: February 2024

Art librarians face many changes in the professional relationship with their users. Technological and cultural evolutions lead us to learn new skills to adapt ourselves to these new audiences. But are these changes really so new to librarians? Librarians have always had to embrace new technological expertise for library catalogues, databases and digital libraries. We know that librarianship is a profession where communication is primordial; communication with library users, and also with the general public – there's not much new here vis-à-vis the traditional missions of librarians. Still, librarians must become more competent than ever at conversing with patrons, to better understand their needs and their ways of expressing those needs, particularly their need to interact with our libraries and collections. Diverse examples from French art libraries illustrate how library professionals tend to use new media, technologies, and cultural trends to enable their institutions to disseminate knowledge and contribute to a more open society that can partake freely of the riches and learning history that art libraries have to offer.
Bringing researchers together with IIIF
Authors: Wolff Johannes , Probst Astrid , Bodenschatz Eva
Published: February 2024

Based on the open-source IIIF image viewer Mirador 3, the Specialised Information Service Art, Photography, Design - arthistoricum.net, in cooperation with NFDI4Culture, the consortium for research data on material and immaterial cultural heritage, provides a platform for collaborative exploration of image resources. Within the virtual research environment, users can create their own workspaces and image collections individually or in groups, share them for collaborative efforts, and jointly create persistent annotations. This article outlines the development and integration process of this web-based research platform and highlights future areas of improvement.
Politics of creep: Latent development, technology monitoring, and the evolution of the Schengen Information System
Authors: Leese Matthias , Ugolini Vanessa
Published: February 2024

The Schengen Information System for law enforcement, border control, and judicial cooperation in the European Union has over the years seen a considerable expansion of the amount and types of data stored and its functionalities, as well as its user base. In light of this transformation from a simple information-sharing tool to a full-blown investigative database, there has, however, been surprisingly little public debate and pushback against the growing surveillance and control capacities that the system enables. This article proposes to understand the largely uncontested evolution of the SIS through the concept of ‘creep’, i.e. the incremental, unforeseen, and/or stealthy development of a technological system beyond what it was originally introduced for. More specifically, it retraces how creep has in the case of the SIS been enabled and facilitated through (1) latent development principles, i.e. the rationale of building dormant features into a system that can be activated at a later point in time once technology has sufficiently matured and/or legal foundations have been adopted; and (2) technology monitoring and steering mechanisms, i.e. the continuous assessment of the readiness of key technologies for anticipated updates to the system as well as interventions in publicly funded research programmes.
White matter tract alterations in schizophrenia identified by DTI-based probabilistic tractography: a multisite harmonisation study
Authors: Jo Young Tak , Joo Sung Woo , Choi Woohyeok , Joe Soohyun , Lee Jungsun
Published: February 2024

Introduction:

It has been suggested that schizophrenia involves dysconnectivity between functional brain regions and also the white matter structural disorganisation. Thus, diffusion tensor imaging (DTI) has widely been used for studying schizophrenia. However, most previous studies have used the region of interest (ROI) based approach. We, therefore, performed the probabilistic tractography method in this study to reveal the alterations of white matter tracts in the schizophrenia brain.

Methods:

A total of four different datasets consisted of 189 patients with schizophrenia and 213 healthy controls were investigated. We performed retrospective harmonisation of raw diffusion MRI data by dMRIharmonisation and used the FMRIB Software Library (FSL) for probabilistic tractography. The connectivities between different ROIs were then compared between patients and controls. Furthermore, we evaluated the relationship between the connection probabilities and the symptoms and cognitive measures in patients with schizophrenia.

Results:

After applying Bonferroni correction for multiple comparisons, 11 different tracts showed significant differences between patients with schizophrenia and healthy controls. Many of these tracts were associated with the basal ganglia or cortico-striatal structures, which aligns with the current literature highlighting striatal dysfunction. Moreover, we found that these tracts demonstrated statistically significant relationships with few cognitive measures related to language, executive function, or processing speed.

Conclusion:

We performed probabilistic tractography using a large, harmonised dataset of diffusion MRI data, which enhanced the statistical power of our study. It is important to note that most of the tracts identified in this study, particularly callosal and cortico-striatal streamlines, have been previously implicated in schizophrenia within the current literature. Further research with harmonised data focusing specifically on these brain regions could be recommended.
Integrating Continuity and Change in the Study of Soviet Society: The Estate Origins of Democracy in Russia
Authors: Hanson Stephen E.
Published: February 2024

Tomila Lankina has written a pathbreaking book. Impressively combining theoretical ambition, sensitive attention to historical detail, and the skillful use of multiple quantitative and qualitative methods, The Estate Origins of Democracy in Russia brings the study of Soviet history squarely back onto the agenda of contemporary comparative social science. For those of us who have spent much of our careers trying to explain to academics and policy makers alike why the story of the rise and fall of the USSR still matters for understanding our contemporary world, Lankina’s book is both welcome vindication and a reason for real optimism about the future of social-scientific inquiry. This is, simply put, the best book I’ve read about the Soviet system and its legacies in many years.
SOIL CARBON STOCKS NOT LINKED TO ABOVEGROUND LITTER INPUT AND CHEMISTRY OF OLD-GROWTH FOREST AND ADJACENT PRAIRIE
Authors: McFarlane Karis J , Mambelli Stefania , Porras Rachel C , Wiedemeier Daniel B , Schmidt Michael W I , Dawson Todd E , Torn Margaret S
Published: February 2024

The long-standing assumption that aboveground plant litter inputs have a substantial influence on soil organic carbon storage (SOC) and dynamics has been challenged by a new paradigm for SOC formation and persistence. We tested the importance of plant litter chemistry on SOC storage, distribution, composition, and age by comparing two highly contrasting ecosystems: an old-growth coast redwood (Sequoia sempervirens) forest, with highly aromatic litter, and an adjacent coastal prairie, with more easily decomposed litter. We hypothesized that if plant litter chemistry was the primary driver, redwood would store more and older SOC that was less microbially processed than prairie. Total soil carbon stocks to 110 cm depth were higher in prairie (35 kg C m−2) than redwood (28 kg C m−2). Radiocarbon values indicated shorter SOC residence times in redwood than prairie throughout the profile. Higher amounts of pyrogenic carbon and a higher degree of microbial processing of SOC appear to be instrumental for soil carbon storage and persistence in prairie, while differences in fine-root carbon inputs likely contribute to younger SOC in redwood. We conclude that at these sites fire residues, root inputs, and soil properties influence soil carbon dynamics to a greater degree than the properties of aboveground litter.
Interplay of polygenic liability with birth-related, somatic, and psychosocial factors in anorexia nervosa risk: a nationwide study
Authors: Papini Natalie M. , Presseller Emily , Bulik Cynthia M. , Holde Katrine , Larsen Janne T. , Thornton Laura M. , Albiñana Clara , Vilhjálmsson Bjarni J. , Mortensen Preben B. , Yilmaz Zeynep , Petersen Liselotte V.
Published: February 2024

Background

Although several types of risk factors for anorexia nervosa (AN) have been identified, including birth-related factors, somatic, and psychosocial risk factors, their interplay with genetic susceptibility remains unclear. Genetic and epidemiological interplay in AN risk were examined using data from Danish nationwide registers. AN polygenic risk score (PRS) and risk factor associations, confounding from AN PRS and/or parental psychiatric history on the association between the risk factors and AN risk, and interactions between AN PRS and each level of target risk factor on AN risk were estimated.

Methods

Participants were individuals born in Denmark between 1981 and 2008 including nationwide-representative data from the iPSYCH2015, and Danish AN cases from the Anorexia Nervosa Genetics Initiative and Eating Disorder Genetics Initiative cohorts. A total of 7003 individuals with AN and 45 229 individuals without a registered AN diagnosis were included. We included 22 AN risk factors from Danish registers.

Results

Risk factors showing association with PRS for AN included urbanicity, parental ages, genitourinary tract infection, and parental socioeconomic factors. Risk factors showed the expected association to AN risk, and this association was only slightly attenuated when adjusted for parental history of psychiatric disorders or/and for the AN PRS. The interaction analyses revealed a differential effect of AN PRS according to the level of the following risk factors: sex, maternal age, genitourinary tract infection, C-section, parental socioeconomic factors and psychiatric history.

Conclusions

Our findings provide evidence for interactions between AN PRS and certain risk-factors, illustrating potential diverse risk pathways to AN diagnosis.
End-to-end deep learning-based framework for path planning and collision checking: bin-picking application
Authors: Ghafarian Tamizi Mehran , Honari Homayoun , Nozdryn-Plotnicki Aleksey , Najjaran Homayoun
Published: February 2024

Real-time and efficient path planning is critical for all robotic systems. In particular, it is of greater importance for industrial robots since the overall planning and execution time directly impact the cycle time and automation economics in production lines. While the problem may not be complex in static environments, classical approaches are inefficient in high-dimensional environments in terms of planning time and optimality. Collision checking poses another challenge in obtaining a real-time solution for path planning in complex environments. To address these issues, we propose an end-to-end learning-based framework viz., Path Planning and Collision checking Network (PPCNet). The PPCNet generates the path by computing waypoints sequentially using two networks: the first network generates a waypoint, and the second one determines whether the waypoint is on a collision-free segment of the path. The end-to-end training process is based on imitation learning that uses data aggregation from the experience of an expert planner to train the two networks, simultaneously. We utilize two approaches for training a network that efficiently approximates the exact geometrical collision checking function. Finally, the PPCNet is evaluated in two different simulation environments and a practical implementation on a robotic arm for a bin-picking application. Compared to the state-of-the-art path-planning methods, our results show significant improvement in performance by greatly reducing the planning time with comparable success rates and path lengths.