bluuebunny/crossref_metadata_2025_split huggingface dataset:
Power-generation enhancements and upstream flow properties of turbines in unsteady inflow conditions
Authors: Wei Nathaniel J. , Dabiri John O. 
Published: July 2023

Energy-harvesting systems in complex flow environments, such as floating offshore wind turbines, tidal turbines and ground-fixed turbines in axial gusts, encounter unsteady streamwise flow conditions that affect their power generation and structural loads. In some cases, enhancements in time-averaged power generation above the steady-flow operating point are observed. To characterize these dynamics, a nonlinear dynamical model for the rotation rate and power extraction of a periodically surging turbine is derived and connected to two potential-flow representations of the induction zone upstream of the turbine. The model predictions for the time-averaged power extraction of the turbine and the upstream flow velocity and pressure are compared against data from experiments conducted with a surging-turbine apparatus in an open-circuit wind tunnel at a diameter-based Reynolds number

$Re_D = 6.3\times 10^5$

and surge-velocity amplitudes up to 24 % of the wind speed. The combined modelling approach captures trends in both the time-averaged power extraction and the fluctuations in upstream flow quantities, while relying only on data from steady-flow measurements. The sensitivity of the observed increases in time-averaged power to steady-flow turbine characteristics is established, thus clarifying the conditions under which these enhancements are possible. Finally, the influence of unsteady fluid mechanics on time-averaged power extraction is explored analytically. The theoretical framework and experimental validation provide a cohesive modelling approach that can drive the design, control and optimization of turbines in unsteady flow conditions, as well as inform the development of novel energy-harvesting systems that can leverage unsteady flows for large increases in power-generation capacities.
Optimal coupling of jumpy Brownian motion on the circle
Authors: Connor Stephen B. , Merli Roberta 
Published: July 2023

AbstractConsider a Brownian motion on the circumference of the unit circle, which jumps to the opposite point of the circumference at incident times of an independent Poisson process of rate
$\lambda$
. We examine the problem of coupling two copies of this ‘jumpy Brownian motion’ started from different locations, so as to optimise certain functions of the coupling time. We describe two intuitive co-adapted couplings (‘Mirror’ and ‘Synchronous’) which differ only when the two processes are directly opposite one another, and show that the question of which strategy is best depends upon the jump rate
$\lambda$
in a non-trivial way. We also provide an explicit description of a (non-co-adapted) maximal coupling for any jump rate in the case that the two jumpy Brownian motions begin at antipodal points of the circle.
An elementary approach to the inverse first-passage-time problem for soft-killed Brownian motion
Authors: Klump Alexander , Kolb Martin 
Published: July 2023

AbstractWe prove existence and uniqueness for the inverse-first-passage time problem for soft-killed Brownian motion using rather elementary methods relying on basic results from probability theory only. We completely avoid the relation to a suitable partial differential equation via a suitable Feynman–Kac representation, which was previously one of the main tools.
Comparing the cognitive load of gesture and action production: a dual-task study
Authors: Hostetter Autumn B. , Bahl Sonal 
Published: July 2023

AbstractSpeech-accompanying gestures have been shown to reduce cognitive load on a secondary task compared to speaking without gestures. In the current study, we investigate whether this benefit of speech-accompanying gestures is shared by speech-accompanying actions (i.e., movements that leave a lasting trace in the physical world). In two experiments, participants attempted to retain verbal and spatial information from a grid while describing a pattern while gesturing, while making the pattern, or while keeping hands still. Producing gestures reduced verbal load compared to keeping hands still when the pattern being described was visually present (Experiment 1), and this benefit was not shared by making the pattern. However, when the pattern being described was not visually present (Experiment 2), making the pattern benefited verbal load compared to keeping hands still. Neither experiment revealed a significant difference between gesture and action. Taken together, the findings suggest that moving the hands in meaningful ways can benefit verbal load.
“A Similar Detente”: Mexico’s Central American Policy, 1978–1982
Authors: Sánchez Nateras Gerardo 
Published: July 2023

AbstractThis article explores Mexico’s overlooked importance in the Central American armed conflict, the limits of its influence, and its connection to the late Cold War. Mexico’s policy toward Central America attempted to prevent an American and Cuban military intervention in the area and avoid a Cold War confrontation along its southern border. Mexico attempted to build detente in the region and prevent a global escalation of tension between the great powers. Meanwhile, it sought to propose a “third way” for the revolutionary actors shaped after Mexico’s political system and history. Studying Mexico’s efforts to create detente-like arrangements can shed light on the efforts of peripheral actors and their projects to influence the international system despite the actions of hegemonic powers.
Spartans or Samaritans? Revealing the Creativity of the Author of 1 Maccabees
Authors: Orian Matan 
Published: July 2023

AbstractA majority of scholars view the Hasmonean-Spartan correspondence, reported in 1 Maccabees, as inauthentic, since it contains many improbabilities, including the assertion that the Jews and the Spartans are fraternal nations. However, its patent implausibility also renders it unimaginable that the correspondence was intended to be understood literally. Hence, the binary choice offered in research, whereby it is either a bizarre fabrication or an authentic correspondence, despite all its peculiarities, is problematic. The Hasmonean-Spartan correspondence thus remains a conspicuous, unresolved enigma in the research of 1 Maccabees and the early Hasmonean period. Based on a textual clue, this article proposes a solution, namely, that the correspondence is, in fact, an ingenious derision of the Jews’ authentic ethnic “brothers”—the Samaritans. This suggestion provides new insights into the history of the early Hasmoneans and the literary creativity of the author of 1 Maccabees.
‘Compliments from the Housewives’: Contesting White Public Space in Late-Colonial Nairobi
Authors: Ference Meghan E. 
Published: July 2023

AbstractThis article examines the racial politics of decolonization in late-colonial Nairobi in the decade before independence through the unique space of the colonial bus using archival letters from a group of European women who called themselves ‘The Housewives’. In letters to Nairobi's mayor and the Kenya Bus Service (KBS), the Housewives argued against a newly proposed transportation policy that would make all seating on the colonial buses the same price, doing away with the first-class section. The letters reveal that African bus riders, particularly Muslim women riders, were centrally important in this crucial time in Kenya's urban history. With Nairobi still under a ‘State of Emergency’ as military operations against the Land and Freedom Army (Mau Mau) were coming to an end, these letters show colonial buses as battlegrounds during the final years of British colonial rule in Kenya with extremely porous social borders and transportation vehicles serving as rich sites of urban life.
Autocracies and policy accumulation: the case of Singapore
Authors: Aschenbrenner Christian , Knill Christoph , Steinebach Yves 
Published: July 2023

AbstractThe tendency of vote-seeking politicians to produce ever-more policies in response to the citizens’ demands has been identified as a central driver of the process of “policy accumulation.” If we accept this premise, policy accumulation should be a central feature of modern democracies but overall be less pronounced in autocracies. Due to its highly ambivalent nature, policy accumulation and its implications may thus constitute an important but so far neglected facets of the new system competition between democracies and autocracies. In this article, we test this argument in the context of the authoritarian regime of Singapore. Singapore is one of the very few autocracies that display elements of political competition and has a level of socio-economic development that is comparable to advanced democracies. Singapore thus constitutes a least-likely case for low levels of policy accumulation. By studying changes in Singapore’s environmental policy over a period of more than four decades (1976 to 2020) and by contrasting the patterns observed with the policy developments in 21 OECD democracies, we find that autocratic regimes do indeed tend to accumulate less than democratic regimes. More precisely, we find that Singapore (1) has only produced about one-fourth of the environmental policy measures of an “average” democracy and (2) is constantly the country with the lowest level of policy accumulation in our sample. These findings hold even when controlling for alternative explanations, such as the effectiveness of the administration and the government’s ability to opt for stricter and more hierarchical forms of intervention.
Frequent vs. infrequent words shape toddlers’ real-time sentence comprehension
Authors: POTTER Christine E. , LEW-WILLIAMS Casey 
Published: July 2023

AbstractWe examined how noun frequency and the typicality of surrounding linguistic context contribute to children’s real-time comprehension. Monolingual English-learning toddlers viewed pairs of pictures while hearing sentences with typical or atypical sentence frames (Look at the… vs. Examine the…), followed by nouns that were higher- or lower-frequency labels for a referent (horse vs. pony). Toddlers showed no significant differences in comprehension of nouns in typical and atypical sentence frames. However, they were less accurate in recognizing lower-frequency nouns, particularly among toddlers with smaller vocabularies. We conclude that toddlers can recognize nouns in diverse sentence contexts, but their representations develop gradually.
Shift from a Zero-COVID strategy to a New-normal strategy for controlling SARS-COV-2 infections in Vietnam
Authors: Toan Do Thi Thanh , Pham Thanh Hai , Nguyen Khanh Cong , Pham Quang Thai , Ha Quoc Doanh , Nguyen Hoa L. , Goldberg Robert J. , Pham Loc Quang , Le Giang Minh , Nguyen Tu Khac , Tran Van Khanh , Ta Van Thanh 
Published: July 2023

Abstract
The aim of this study is to analyse the changing patterns in the transmission of COVID-19 in relation to changes in Vietnamese governmental policies, based on epidemiological data and policy actions in a large Vietnamese province, Bac Ninh, in 2021. Data on confirmed cases from January to December 2021 were collected, together with policy documents. There were three distinct periods of the COVID-19 pandemic in Bac Ninh province during 2021. During the first period, referred to as the ‘Zero-COVID’ period (01/04–07/04/2021), there was a low population vaccination rate, with less than 25% of the population receiving its first vaccine dose. Measures implemented during this period focused on domestic movement restrictions, mask mandates, and screening efforts to control the spread of the virus. The subsequent period, referred to as the ‘Transition’ period (07/05–10/22/2021), witnessed a significant increase in population vaccination coverage, with 80% of the population receiving their first vaccine dose. During this period, several days passed without any reported COVID-19 cases in the community. The local government implemented measures to manage domestic actions and reduce the time spent in quarantine, and encouraged home quarantining for the close contacts of cases with COVID-19. Finally, the ‘New-normal’ stage (10/23–12/31/2021), during which the population vaccination coverage with a second vaccine dose increased to 70%, and most of the mandates for the prevention and control of COVID-19 were reduced. In conclusion, this study highlights the importance of governmental policies in managing and controlling the transmission of COVID-19 and provides insights for developing realistic and context-specific strategies in similar settings.
Time-lagged associations between two adverse childhood experiences and later-life cognitive function through educational attainment and stroke
Authors: Kraal A. Zarina , Zaheed Afsara B. , Krasnova Anna , Vadari Harita , Byrd DeAnnah R. , Zahodne Laura B. 
Published: July 2023

AbstractObjective:Adverse childhood experiences (ACEs) have been associated with worse cognitive health in older adulthood. This study aimed to extend findings on the specificity, persistence, and pathways of associations between two ACEs and cognition by using a comprehensive neuropsychological battery and a time-lagged mediation design.Method:Participants were 3304 older adults in the Health and Retirement Study Harmonized Cognitive Assessment Protocol. Participants retrospectively reported whether they were exposed to parental substance abuse or experienced parental physical abuse before age 18. Factor scores derived from a battery of 13 neuropsychological tests indexed cognitive domains of episodic memory, executive functioning, processing speed, language, and visuospatial function. Structural equation models examined self-reported years of education and stroke as mediators, controlling for sociodemographics and childhood socioeconomic status.Results:Parental substance abuse in childhood was associated with worse later-life cognitive function across all domains, in part via pathways involving educational attainment and stroke. Parental physical abuse was associated with worse cognitive outcomes via stroke independent of education.Conclusions:This national longitudinal study in the United States provides evidence for broad and persistent indirect associations between two ACEs and cognitive aging via differential pathways involving educational attainment and stroke. Future research should examine additional ACEs and mechanisms as well as moderators of these associations to better understand points of intervention.
MODELLING MICROWAVES IN BAUXITE
Authors: PAEA LATA I. , PAEA SIONE , MCGUINNESS MARK J. 
Published: July 2023

AbstractSending microwaves through bauxite ore allows almost continuous measurement of moisture content during offload by conveyor belt from a ship. Data and results from a microwave analyser were brought to a European Study Group with Industry at the University of Limerick, with the over-arching question of whether the results are accurate enough. The analyser equipment uses linear regression against phase shifts and signal attenuation to infer moisture content in real time. Simple initial modelling conducted during the Study Group supports this use of linear regression for phase shift data. However, that work also revealed striking and puzzling differences between model and attenuation data.We present an improved model that allows for multiple reflections of travelling microwaves within the bauxite and in the air above it. Our new model uses four differential equations to describe how electric fields change with distance in each of four layers. By solving these equations and taking reflections into account, we can accurately predict what the receiving antenna will pick up.Our new solution provides much-improved matches to data from the microwave analyser, and indicates the deleterious effects of reflections. Modelled signal strength behaviour features a highly undesirable noninvertible dependence on bauxite mixture permittivity.Practical measures that might be expected to reduce the effects of microwave reflections and improve the accuracy of microwave analyser results are suggested based on our improved model solution. This modelling approach and these results are anticipated to extend to the analysis of moisture content during transport on conveyor belts of other ores, slurries, coal, grains and pharmaceutical powders, especially when the depth of the conveyed material is variable.
Citizen Science Observation of a Gamma‐Ray Glow Associated With the Initiation of a Lightning Flash
Authors: Tsurumi M. , Enoto T. , Ikkatai Y. , Wu T. , Wang D. , Shinoda T. , Nakazawa K. , Tsuji N. , Diniz G. S. , Kataoka J. , Koshikawa N. , Iwashita R. , Kamogawa M. , Takagaki T. , Miyake S. , Tomioka D. , Morimoto T. , Nakamura Y. , Tsuchiya H. 
Published: July 2023

AbstractGamma‐ray glows are observational evidence of relativistic electron acceleration due to the electric field in thunderclouds. However, it is yet to be understood whether such relativistic electrons contribute to the initiation of lightning discharges. To tackle this question, we started the citizen science “Thundercloud Project,” where we map radiation measurements of glows from winter thunderclouds along Japan's sea coast area. We developed and deployed 58 compact gamma‐ray monitors at the end of 2021. On 30 December 2021, five monitors simultaneously detected a glow with its radiation distribution horizontally extending for 2 km. The glow terminated coinciding with a lightning flash at 04:08:34 JST, which was recorded by the two radio‐band lightning mapping systems, FALMA and DALMA. The initial discharges during the preliminary breakdown started above the glow, that is, in vicinity of the electron acceleration site. This result provides one example of possible connections between electron acceleration and lightning initiation.
Atypical cortical networks in children at high-genetic risk of psychiatric and neurodevelopmental disorders
Authors: Doherty Joanne L. , Cunningham Adam C. , Chawner Samuel J. R. A. , Moss Hayley M. , Dima Diana C. , Linden David E. J. , Owen Michael J. , van den Bree Marianne B. M. , Singh Krish D. 
Published: July 2023

AbstractAlthough many genetic risk factors for psychiatric and neurodevelopmental disorders have been identified, the neurobiological route from genetic risk to neuropsychiatric outcome remains unclear. 22q11.2 deletion syndrome (22q11.2DS) is a copy number variant (CNV) syndrome associated with high rates of neurodevelopmental and psychiatric disorders including autism spectrum disorder (ASD), attention deficit hyperactivity disorder (ADHD) and schizophrenia. Alterations in neural integration and cortical connectivity have been linked to the spectrum of neuropsychiatric disorders seen in 22q11.2DS and may be a mechanism by which the CNV acts to increase risk. In this study, magnetoencephalography (MEG) was used to investigate electrophysiological markers of local and global network function in 34 children with 22q11.2DS and 25 controls aged 10–17 years old. Resting-state oscillatory activity and functional connectivity across six frequency bands were compared between groups. Regression analyses were used to explore the relationships between these measures, neurodevelopmental symptoms and IQ. Children with 22q11.2DS had altered network activity and connectivity in high and low frequency bands, reflecting modified local and long-range cortical circuitry. Alpha and theta band connectivity were negatively associated with ASD symptoms while frontal high frequency (gamma band) activity was positively associated with ASD symptoms. Alpha band activity was positively associated with cognitive ability. These findings suggest that haploinsufficiency at the 22q11.2 locus impacts short and long-range cortical circuits, which could be a mechanism underlying neurodevelopmental and psychiatric vulnerability in this high-risk group.
Diabetes mellitus and risk of breast cancer: a large-scale, prospective, population-based study
Authors: Xiong Fanxiu , Wang Jingxuan , Nierenberg Jovia L. , Van Blarigan Erin L. , Kenfield Stacey A. , Chan June M. , Schmajuk Gabriela , Huang Chiung-Yu , Graff Rebecca E. 
Published: July 2023

Abstract
Background
The objective of this study was to evaluate associations of diabetes overall, type 1 diabetes (T1D), and type 2 diabetes (T2D) with breast cancer (BCa) risk.

Methods
We included 250,312 women aged 40–69 years between 2006 and 2010 from the UK Biobank cohort. Adjusted hazard ratios (aHRs) and 95% confidence intervals (CIs) were calculated for associations of diabetes and its two major types with the time from enrollment to incident BCa.

Results
We identified 8182 BCa cases during a median follow-up of 11.1 years. We found no overall association between diabetes and BCa risk (aHR = 1.02, 95% CI = 0.92–1.14). When accounting for diabetes subtype, women with T1D had a higher risk of BCa than women without diabetes (aHR = 1.52, 95% CI = 1.03–2.23). T2D was not associated with BCa risk overall (aHR = 1.00, 95% CI = 0.90–1.12). However, there was a significantly increased risk of BCa in the short time window after T2D diagnosis.

Conclusions
Though we did not find an association between diabetes and BCa risk overall, an increased risk of BCa was observed shortly after T2D diagnosis. In addition, our data suggest that women with T1D may have an increased risk of BCa.
Stanniocalcin 1 promotes lung metastasis of breast cancer by enhancing EGFR–ERK–S100A4 signaling
Authors: Liu Anfei , Li Yunting , Lu Sitong , Cai Chunqing , Zou Fei , Meng Xiaojing 
Published: July 2023

AbstractLung metastasis is the leading cause of breast cancer-related death. The tumor microenvironment contributes to the metastatic colonization of tumor cells in the lungs. Tumor secretory factors are important mediators for the adaptation of cancer cells to foreign microenvironments. Here, we report that tumor-secreted stanniocalcin 1 (STC1) promotes the pulmonary metastasis of breast cancer by enhancing the invasiveness of tumor cells and promoting angiogenesis and lung fibroblast activation in the metastatic microenvironment. The results show that STC1 modifies the metastatic microenvironment through its autocrine action on breast cancer cells. Specifically, STC1 upregulates the expression of S100 calcium-binding protein A4 (S100A4) by facilitating the phosphorylation of EGFR and ERK signaling in breast cancer cells. S100A4 mediates the effect of STC1 on angiogenesis and lung fibroblasts. Importantly, S100A4 knockdown diminishes STC1-induced lung metastasis of breast cancer. Moreover, activated JNK signaling upregulates STC1 expression in breast cancer cells with lung-tropism. Overall, our findings reveal that STC1 plays important role in breast cancer lung metastasis.