bluuebunny/crossref_metadata_2025_split huggingface dataset:
Optimization for industrial robot joint movement in non-horizontal 3D printing application
Authors: Lu Ming , Wu Hao , Yuan Philip F. 
Published: May 2024

AbstractWhen a robot is printing a sequence of non-horizontal goal poses, its joint values often undergo significant variations, resulting in challenges such as singularities or exceeding joint limits. This paper proposes two new methods aimed at optimizing goal poses to solve the problem. The first method, employing an analytical approach, modifies the goal poses to maintain the 4th joint value of a 6-axis industrial robot at zero. This adjustment effectively reduces the motion range of the 5th and 6th axes. The second method utilizes numerical optimization to adjust the goal poses, aiming to minimize the motion range of all joints. Leveraging the analytical method to obtain one good initial value, numerical optimization is subsequently applied to complete the entire path optimization, creating an optimization workflow. It is also possible to use only analytical methods for computational efficiency. The feasibility and effectiveness of these two methods are validated through simulation and real project case.
Recalcitrant dissolved organic matter in lakes: a critical but neglected carbon sink
Authors: Xia Fan , Zhou Yongqiang , Zhou Lei , Zhang Yunlin , Jeppesen Erik 
Published: May 2024

AbstractLakes are hotspots for the biogeochemical processing of carbon, including dissolved organic matter (DOM). A less degradable fraction of DOM, preserved for a long time, can be categorized as recalcitrant DOM (RDOM). Lake RDOM is an important but neglected carbon sink, and its characteristics and transformation processes remain largely unknown.
DOES IMPLY , UNIFORMLY?
Authors: ANDRETTA ALESSANDRO , NOTARO LORENZO 
Published: May 2024

Abstract
The axiom of dependent choice (

$\mathsf {DC}$

) and the axiom of countable choice (

${\mathsf {AC}}_\omega $

) are two weak forms of the axiom of choice that can be stated for a specific set:

$\mathsf {DC} ( X )$

asserts that any total binary relation on X has an infinite chain, while

${\mathsf {AC}}_\omega ( X )$

asserts that any countable collection of nonempty subsets of X has a choice function. It is well-known that

$\mathsf {DC} \Rightarrow {\mathsf {AC}}_\omega $

. We study for which sets and under which hypotheses

$\mathsf {DC} ( X ) \Rightarrow {\mathsf {AC}}_\omega ( X )$

, and then we show it is consistent with

$\mathsf {ZF}$

that there is a set

$A \subseteq \mathbb {R}$

for which

$\mathsf {DC} ( A )$

holds, but

${\mathsf {AC}}_\omega ( A )$

fails.
Audit Experiments of Racial Discrimination and the Importance of Symmetry in Exposure to Cues
Authors: Leavitt Thomas , Rivera-Burgos Viviana 
Published: May 2024

AbstractResearchers are often interested in whether discrimination on the basis of racial cues persists above and beyond discrimination on the basis of nonracial attributes that decision makers—e.g., employers and legislators—infer from such cues. We show that existing audit experiments may be unable to parse these mechanisms because of an asymmetry in when decision makers are exposed to cues of race and additional signals intended to rule out discrimination due to other attributes. For example, email audit experiments typically cue race via the name in the email address, at which point legislators can choose to open the email, but cue other attributes in the body of the email, which decision makers can be exposed to only after opening the email. We derive the bias resulting from this asymmetry and then propose two distinct solutions for email audit experiments. The first exposes decision makers to all cues before the decision to open. The second crafts the email to ensure no discrimination in opening and then exposes decision makers to all cues in the body of the email after opening. This second solution works without measures of opening, but can be improved when researchers do measure opening, even if with error.
National Action Plans: Effectiveness and requirements for the Global Plastics Treaty
Authors: March Antaya , Tsouza Audrey , Nieminen Laura , Winton Samuel , Arora Hunar , Shejuti Sayda-Merhabin , Walker Tony R. , Fletcher Stephen 
Published: May 2024

AbstractNational Action Plans (NAPs) are a possible implementation measure for the Global Plastics Treaty, through a NAP-based approach. Their effectiveness in other international agreements is contested, and their current format allows for weak, voluntary measures with limited accountability. By analysing stakeholder and country submissions to the Intergovernmental Negotiating Committee (INC) secretariat ahead of INC-2 negotiations in Paris, June 2023, conducting a literature review, and interviewing key actors, this study aims to determine the support that governments and stakeholders have for a NAP-based approach in the Treaty, and identify the key enablers needed to ensure that NAP-based approaches, if adopted in the Treaty, are effective. Results indicate that by INC-2, more than 85% of countries supported a NAP-based approach, suggesting a high chance of this approach being selected as the means of implementation of the Treaty. However, interviewees and literature reviews indicate that NAPs in their current form are not likely to be effective at delivering ambitious Treaty targets. Six key enablers to improve the effectiveness of plastics NAPs are identified. These enablers should be integrated into any plastics NAPs both independently, and as potential requirements of the Treaty to ensure that NAP-based approaches are effective and have the impact intended.
Presidential policymaking, 1877–2020
Authors: Kaufman Aaron R. , Rogowski Jon C. 
Published: May 2024

AbstractWhile presidents frequently create new policies through unilateral power, empirical scholarship generally focuses on executive orders and overlooks other categories of directives. We introduce data on more than 50,000 unilateral directives issued between 1877 and 2020 and use machine learning techniques to characterize their substantive importance and issue areas. Our measures reveal significant increases in unilateral activity over time, driven largely by increases in foreign affairs and through the substitution of memoranda for executive orders. We use our measures to formally evaluate the historical development of the unilateral presidency and reassess theoretical claims about public opinion and unilateral power. Our research provides new evidence about variation in the use of presidential authority and opens new avenues for empirical inquiry.
Who Really Represents Me? The Case of Afro-Latinx Bureaucratic Representation in New York City Public Schools
Authors: Capers K. Jurée , Carr Schneider Virginia 
Published: May 2024

AbstractAs demographic groups’ heterogeneity increases, questions emerge about how elected and unelected political representatives respond to such diversity. Representative bureaucracy scholarship suggests that representatives will rely on shared values and interests with clients of their demographic group to make decisions or implement policies that improve the group’s status. However, differences in immigration histories, demographic characteristics, language, and discrimination experiences within racial and ethnic groups are points of diversion that could affect representation. We explore the relationship between race and ethnicity to understand how within-group differences may disrupt the traditional assumptions of representation. Centering on the experiences of Afro-Latinx students, we ask, What effect do within-group differences have on bureaucrat-client representation?” Afro-Latinx students share a racial identity with Black education bureaucrats and an ethnic identity with Latinx education bureaucrats but may also differ from both groups in their language acquisition, culture, norms, and interests. We find that Black representatives offer Afro-Latinx students substantive representation, while Latinx representatives do not when we consider their racial identity. The research holds implications for understanding the boundaries of representation and may offer insight into the importance of disaggregating groups in representation studies.
NORMAL BASES FOR FUNCTION FIELDS
Authors: HAMAHATA YOSHINORI 
Published: May 2024

AbstractIn function fields in positive characteristic, we provide a concrete example of completely normal elements for a finite Galois extension. More precisely, for a nonabelian extension, we construct completely normal elements for Drinfeld modular function fields using Siegel functions in function fields. For an abelian extension, we construct completely normal elements for cyclotomic function fields.
(MIS)MANAGEMENT OF ROMAN GROVES
Authors: Fox Andrew 
Published: May 2024

AbstractThe management and mismanagement of Roman groves was a serious matter, and intentional and unintentional violations of these spaces could be severely punished. In spite of this, groves remained loosely defined by Romans and their boundaries were commonly misunderstood, a confusion that has continued into modern scholarship, where groves are understood as either a clearing in a wood or a dark space lit by artificial lighting. This article takes up this discussion, and explores the nature of an ancient grove as a well-attested space under forest management that influences later conversations on the nature of wooded spaces in more recent periods.
Ration particle size has different effects on digestive but not production parameters in higher-yielding (Holstein) compared to lower-yielding (Girolando) cows
Authors: Ribeiro Rafael Sandin , Silva Abias Santos , Diavão Jaciara , Sacramento João Paulo , Minighin Duarte , Tomich Thierry Ribeiro , Machado Fernanda Samarini , Campos Mariana Magalhães , Pereira Luiz Gustavo Ribeiro , Maurício Rogério Martins , Chaves Alexandre Vieira 
Published: May 2024

AbstractThe aim of the study was to evaluate the effect of total mixed ration particle size (length) and breed of cow on intake dynamics, animal performance and CH4 emissions, comparing high yielding Holstein and low yielding Girolando cows. The experimental design was 2 × 2 Latin Square arranged as a crossover factorial scheme with two diets (short particle size, SPS and long particle size, LPS) and the two breed compositions. The design comprised two periods of 26 d each, where all data collection was performed at cow level. No influence of the particle size occurred for the passage rate, neutral detergent fiber digestibility, performance and milk composition, methane emissions or ruminal fermentation parameters. Girolando cows had greater dry matter intake (DMI) when fed SPS, while Holsteins had the same (P < 0.05). Girolando cows had lower dry matter digestibility when fed LPS compared to SPS, while Holsteins had the opposite effect (P < 0.05). Also, the digestibility of crude protein and non-fibrous carbohydrates decreased in Girolando cows fed LPS, but not in Holsteins (P < 0.05). Girolando cows reduced DMI by 10.6% when fed LPS diet (P < 0.05). Girolando had an increased eating rate (+24 g of DM/min; P < 0.05) compared to Holstein cows, but Holstein cows had a lower CH4 intensity (by 29.7%: P < 0.05). Girolando cows increased the dry matter intake when fed a diet with short particle size, while the same did not happen in Holsteins. Dry matter digestibility increased in Holsteins when fed long particle size, while the opposite was observed in Girolando cows. Nutrient digestibility was reduced in Girolando cows when fed short particle size. Particle size did not influence eating time, eating rate, feed trough visits, visits with intake, milk yield and composition regardless of the breed. Reducing particle size increased CH4 intensity in both breeds.
140-year history of pharyngoesophageal reconstruction
Authors: Butskiy Oleksandr , Chang Brent A , Anderson Donald W , Banyi Norbert , Prisman Eitan 
Published: May 2024

AbstractObjectiveFor over a century, circumferential pharyngoesophageal junction reconstruction posed significant surgical challenges. This review aims to provide a narrative history of pharyngoesophageal junction reconstruction from early surgical innovations to the advent of modern free-flap procedures.MethodsThe review encompasses three segments: (1) local and/or locoregional flaps, (2) visceral transposition flaps, and (3) free-tissue transfer, focusing on the interplay between pharyngoesophageal junction reconstruction and prevalent surgical trends.ResultsBefore 1960, Mikulicz-Radecki's flaps and the Wookey technique prevailed for circumferential pharyngoesophageal junction reconstruction. Gastric pull-up and colonic interposition were favoured visceral techniques in the 1960s–1990s. Concurrently, deltopectoral and pectoralis major flaps were the preferred cutaneous methods. Free flaps (radial forearm, anterolateral thigh) revolutionised reconstructions in the late 1980s, yet gastric pull-up and free jejunal transfer remain in selective use.ConclusionsNumerous pharyngoesophageal junction reconstructive methods have been trialled in the last century. Despite significant advancements in free-flap reconstruction, some older methods are still in use for challenging clinical situations.
Associations of prenatal stress with 5-year-old children’s executive function in a low socioeconomic status population
Authors: Vrantsidis Daphne M. , Klebanoff Mark A. , Yeates Keith Owen , Murnan Aaron , Fried Peter , Boone Kelly M. , Rausch Joseph , Keim Sarah A. 
Published: May 2024

Abstract
Prenatal stress has a significant, but small, negative effect on children’s executive function (EF) in middle and high socioeconomic status (SES) households. Importantly, rates and severity of prenatal stress are higher and protective factors are reduced in lower SES households, suggesting prenatal stress may be particularly detrimental for children’s EF in this population. This study examined whether prenatal stress was linked to 5-year-old’s EF in a predominantly low SES sample and child sex moderated this association, as males may be more vulnerable to adverse prenatal experiences. Participants were 132 mother-child dyads drawn from a prospective prenatal cohort. Mothers reported on their depression symptoms, trait anxiety, perceived stress, everyday discrimination, and sleep quality at enrollment and once each trimester, to form a composite prenatal stress measure. Children’s EF was assessed at age 5 years using the parent-report Behavior Rating Inventory of Executive Function - Preschool (BRIEF-P) Global Executive Composite subscale and neuropsychological tasks completed by the children. Mixed models revealed higher prenatal stress was associated with lower BRIEF-P scores, indicating better EF, for females only. Higher prenatal stress was associated with lower performance on neuropsychological EF measures for both males and females. Results add to the limited evidence about prenatal stress effects on children’s EF in low SES households.
For fame and fortune: the origins of St Petersburg’s zoo, 1865–1871
Authors: Kotenko Anton 
Published: May 2024

Abstract
In the 1860s, the first zoos appeared in the Romanov empire. This article deals with the reasons for their establishment by looking into the early history of St Petersburg’s zoo, which has not been explicitly discussed in the historiography. By situating its history in the global context, it argues that, on the one hand, St Petersburg’s zoo was founded because the city’s officials wanted to enhance the fame of the capital of their empire in the globalizing world of the nineteenth century. On the other hand, the founder of the zoo had other motivations and was principally driven by mercantile considerations. Thus, St Petersburg’s zoological garden is presented as one of the important social spaces and points of reference of the Romanov empire’s capital, which could bring fame and fortune to the zoo’s owners and the city in which it was located.
Echocardiography to predict left ventricular filling pressure for long-term paediatric heart transplant patients
Authors: Alfares Fahad A. , Nanjegowda Chetan , Swaminathan Sethuraman , Hunter Juanita , Alkon Jaime , Sandhu Satinder , Rusconi Paolo 
Published: May 2024

AbstractObjectives:Left ventricular diastolic dysfunction is a recognised sequela following transplantation in paediatric heart transplant patients. Traditional echocardiographic indices do not correlate well with left ventricular filling pressure immediately after transplantation. This study aimed to assess whether these indices have any long-term correlation after transplantation in paediatric patients.Methods:A retrospective chart review of 41 patients who had a heart transplant before the age of 24 years was performed. The median time since the transplantation was 11 years. Data obtained from surveillance cardiac catheterisation and echocardiographic examination were reviewed. Traditional echocardiographic indices of diastolic function were compared with the pulmonary capillary wedge pressure and left ventricular end-diastolic pressure obtained from cardiac catheterisation.Results:The median age at transplant was 12.1 years, and the median time since transplant was 11 years. Eighteen patients (43%) had a history of at least one rejection episode and 12 patients (29%) had a history of cardiac allograft vasculopathy. There was no correlation between mitral inflow E velocity, mitral E/A ratio, tissue Doppler velocities, mitral E/e’ (mitral inflow E velocity to mitral annular velocity), and elevated pulmonary capillary wedge pressure or elevated left ventricular end-diastolic pressure. There was no correlation between mitral valve deceleration time or isovolumetric relaxation time with elevated pulmonary capillary wedge pressure or elevated left ventricular end-diastolic pressure.Conclusion:Our findings suggest that traditional echocardiographic indices of diastolic function do not correlate well with elevated invasive pulmonary capillary wedge pressure or elevated left ventricular end-diastolic pressure in paediatric heart transplant patients’ long-term post-transplantation.
The rise of the Spanish right during the Second Republic (1931–36). Social structures, Catholic associations, and conservative electoral mobilization
Authors: Llamazares Iván 
Published: May 2024

AbstractComparative historical analyses have emphasized the role played by conservative parties in the consolidation of democratic regimes in Europe. They have also identified the main factors shaping the political and electoral strength of the right in democratization processes. On the basis of these analyses, the Spanish Second Republic (1931–36) has been characterized as a very inauspicious ground for the development of a strong conservative party. However, the right managed to build a successful electoral force in a short period of time. This paper explores the factors affecting the electoral strength of the Spanish right by conducting ecological statistical analyses in the three republican legislative elections. Empirical results show that the right managed to build strong links with national voters on the basis of sociopolitical cleavages and underlying social and institutional characteristics. In particular, they reveal the key importance of the religious cleavage in the party system of the 1930s and the crucial role played by Catholic lay organizations in the success of the right. Ultimately, this finding shows that, contrary to previous theoretical expectations, initial organizational precariousness was not an unsurmountable obstacle for the electoral success of the Spanish right.
Impacts of Climate Change on the Ascension Island Marine Protected Area and Its Ecosystem Services
Authors: de Mora L. , Galli G. , Artioli Y. , Broszeit S. , Garrard S. L. , Baum D. , Weber S. , Blackford J. 
Published: May 2024

AbstractThis is the first projection of marine circulation and biogeochemistry for the Ascension Island Marine Protected Area (AIMPA). Marine Protected Areas are a key management tool used to safeguard biodiversity, but their efficacy is increasingly threatened by climate change. To assess an MPA's vulnerability to climate change and predict biological responses, we must first project how the local marine environment will change. We present the projections of an ensemble from the Sixth Coupled Model Intercomparision Project. Relative to the recent past (2000–2010), the multi‐model means of the mid‐century (2040–2050) project that the AIMPA will become warmer (+0.9 to +1.2°C), more saline (+0.01 to +0.10), with a shallower mixed layer depth (−1.3 to −0.8 m), a weaker Atlantic Equatorial Undercurrent (AEU) (−1.5 to −0.4 Sv), more acidic (−0.10 to −0.07), with lower surface nutrient concentrations (−0.023 to −0.0141 mmol N m−3 and −0.013 to −0.009 mmol P m−3), less chlorophyll (−6 to −3 µg m−3) and less primary production (−0.31 to −0.20 mol m−2 yr−1). These changes are often more extreme in the scenarios with higher greenhouse gases emissions and more significant climate change. Using the multi‐model mean for two scenarios in the years 2090–2100, we assessed how five key ecosystem services in both the shallow subtidal and the pelagic zone were likely to be impacted by climate change. Both low and high emission scenarios project significant changes to the AIMPA, and it is likely that the provision of several ecosystem services will be negatively impacted.
Streamflow Depletion Caused by Groundwater Pumping: Fundamental Research Priorities for Management‐Relevant Science
Authors: Zipper Sam , Brookfield Andrea , Ajami Hoori , Ayers Jessica R. , Beightel Chris , Fienen Michael N. , Gleeson Tom , Hammond John , Hill Mary , Kendall Anthony D. , Kerr Ben , Lapides Dana , Porter Misty , Parimalarenganayaki S. , Rohde Melissa M. , Wardropper Chloe 
Published: May 2024

AbstractReductions in streamflow caused by groundwater pumping, known as “streamflow depletion,” link the hydrologic process of stream‐aquifer interactions to human modifications of the water cycle. Isolating the impacts of groundwater pumping on streamflow is challenging because other climate and human activities concurrently impact streamflow, making it difficult to separate individual drivers of hydrologic change. In addition, there can be lags between when pumping occurs and when streamflow is affected. However, accurate quantification of streamflow depletion is critical to integrated groundwater and surface water management decision making. Here, we highlight research priorities to help advance fundamental hydrologic science and better serve the decision‐making process. Key priorities include (a) linking streamflow depletion to decision‐relevant outcomes such as ecosystem function and water users to align with partner needs; (b) enhancing partner trust and applicability of streamflow depletion methods through benchmarking and coupled model development; and (c) improving links between streamflow depletion quantification and decision‐making processes. Catalyzing research efforts around the common goal of enhancing our streamflow depletion decision‐support capabilities will require disciplinary advances within the water science community and a commitment to transdisciplinary collaboration with diverse water‐connected disciplines, professions, governments, organizations, and communities.