bluuebunny/crossref_metadata_2025_split huggingface dataset:
Comparison of aerobic rice cultivation using drip systems with conventional flooding
Authors: Bozkurt Çolak Y. 
Published: October 2021

AbstractIn this study, yield and water productivity response of rice to various irrigation levels applied with subsurface and surface drip systems in 2019 and 2020 in the Mediterranean Region of Turkey was evaluated in comparison with conventional flooding (CF). The treatments consisted of two irrigation methods namely surface drip (DI) and subsurface drip systems (SDI), three irrigation levels designated as plant pan coefficients (I1.00: Evaporation from Class A pan (Ep) × 1.00; I1.25: Ep × 1.25 and I1.50: Ep × 1.50) and CF as control. The effects of drip systems and coefficients on yield and yield components were statistically significant (P < 0.01). DI produced higher yield than SDI. CF produced significantly greater yield than both DI and SDI systems. With two drip systems, average water savings of 60.5% in I1.00, 54.5% in I1.25 and 49% in I1.50 were achieved as compared to CF. However, yield reductions of 15% in I1.50, 20% in I1.25, 29% in I1.00 were observed for DI; corresponding values for SDI were 20, 28 and 44%, respectively. Drip irrigation in aerobic rice production system had almost twice the water productivity based on total irrigation water applied (WPI) or total water input (irrigation + rainfall) (WPI+P) compared with CF. During the study years, the highest WPI and WPI+P values were found in DI-I1.00 (0.81–0.73 kg/m3) and (0.85 and 0.74 kg/m3), respectively. In conclusion, DI-I1.50 treatment is recommended for sustainable aerobic rice production since DI-I1.50 resulted in water saving of 49% but yield decrease of 15% as compared to CF.
Real-time single-frequency precise positioning with Galileo satellites
Authors: Bahadur Berkay 
Published: October 2021

AbstractFollowing substantial progress achieved recently, the Galileo constellation provides a considerable satellite resource for the GNSS applications. In this regard, the performance assessment of real-time single-frequency precise positioning with Galileo satellites is the main objective of this research. For this purpose, several experimental tests were conducted in this study with two single-frequency positioning models, namely single-frequency code-based positioning and code-phase combination. The results show that Galileo presents an adequate number of visible satellites sufficient for single-frequency positioning. Also, the study demonstrates that, in comparison to GPS observations, Galileo observations have a significantly lower noise level. For the single-frequency code-based positioning, Galileo presents a better positioning accuracy than GPS by 25⋅8% on average. When compared with GPS, a 9⋅4% better positioning accuracy is acquired from Galileo for the single-frequency code-phase combination, with its average convergence time shorter than GPS by a ratio of 24⋅4%.
The Nicaraguan Revolution's Challenge to the Monroe Doctrine: Sandinistas and Western Europe, 1979–1990
Authors: van Ommen Eline 
Published: October 2021

AbstractThis article analyzes the revolutionary diplomacy of the Sandinista National Liberation Front (FSLN) through the prism of Nicaraguan and Western European relations during the final decade of the Cold War. It contends that —despite the FSLN's ideological affiliation with Third World national liberation movements, Cuba, and the socialist bloc—the campaign to influence Western European foreign policies was central to the Sandinista government's international strategy. By pushing Western European governments to play a prominent role in Central America's violent Cold War conflicts, the Sandinistas sought to undermine US power in the isthmus and alter the inter-American dynamics that shaped their region's history up to the late 1970s. Furthermore, by building financial ties with Western European countries, the FSLN could avoid complete financial dependency on the Soviet bloc and strengthen Nicaragua's image as a nonaligned state. The Sandinistas’ campaign to challenge US hegemony in Central America through a pragmatic outreach to Western Europe was largely successful, but it came at the cost of implementing domestic reforms that ran counter to their own ambitions. Ultimately, this prompted the FSLN to hold elections in 1990, which resulted in their removal from power.
Analogic Perspective-Taking and Attitudes Toward Political Organizations: An Experiment with a Teachers’ Union
Authors: Hertel-Fernandez Alexander , Porter Ethan 
Published: October 2021

AbstractAttitudes toward social out-groups can be improved through “analogic perspective-taking,” whereby respondents are encouraged to use an analogy to take the perspective of the group. It is unclear, however, whether analogic perspective-taking can improve attitudes toward political organizations; how perspective-taking fares compared to the provision of narrative alone; and the limits of the attitude changes it creates. We report results from an experiment that tested analogic perspective-taking exercises about members of teachers’ unions. While perspective-taking improves attitudes toward unions, union members, and willingness to pay more in education taxes, it also increases support for some antiunion policies. A second study suggests that the bidirectional policy effects are attributable to subjects’ difficulty distinguishing pro- from antiunion policies. Analogic perspective-taking can improve attitudes toward social and political groups. But narrative exchange is not always superior to narrative provision, and both approaches may yield mixed effects on policy attitudes.
Multi‐Objective Adaptive Surrogate Modeling‐Based Optimization for Distributed Environmental Models Based on Grid Sampling
Authors: Sun Ruochen , Duan Qingyun , Huo Xueli 
Published: October 2021

AbstractParameter optimization is needed for reliable simulations and predictions of natural processes by environmental models. The surrogate modeling‐based approach is an efficient way to reduce the number of model evaluations needed for optimization. However, building a surrogate of a distributed environmental model with many output variables over a large spatial domain is computationally intensive as it involves a large number of expensive model simulations on many spatial grid cells. In this study, a novel calibration method called the multi‐objective adaptive surrogate modeling‐based optimization using grid sampling (MO‐ASMOGS) is introduced. This method constructs the response surface surrogate of the original model more efficiently by using both parameter and spatial grid sampling. The spatial grid sampling strategy utilizes the evolutionary elitism and adaptive sampling concepts, thus allowing the surrogate model to be built using a fraction of the total grid cells over a large region. We apply MO‐ASMOGS to calibrating the Noah‐MP model against two surface fluxes: the gross primary production (GPP) and the latent heat flux (LH), over two plant function types (PFTs) across the continental United States. The results demonstrate that the MO‐ASMOGS method can significantly improve the GPP and LH simulations. The new method needs only a small portion of the total grid cells sampled for a given PFT to achieve comparable optimization results obtained by MO‐ASMO using all grid cells. This method can be very valuable in improving model calibration of computationally intensive distributed environmental models.
Bifurcated Current Sheets in Mercury's Magnetotail: Observations and Implications
Authors: Al Asad Manar M. , Johnson Catherine L. , Philpott Lydia C. 
Published: October 2021

AbstractCross‐tail current sheets play an important role in magnetospheric dynamics and plasma transport. We present a comprehensive study of the structure and behavior of Mercury's cross‐tail current sheet, as well as constraints on the plasma environment imposed by this structure, using magnetic field measurements from the MESSENGER spacecraft. We find that the current sheet dominantly exhibits a bifurcated, or double‐peaked, current density structure throughout the tail region, but that a single‐peaked sheet is sometimes observed. The time‐averaged current distribution in the nightside magnetosphere is as follows: close to the planet on the midnight plane at an altitude of 0.15 RM (where RM is Mercury radius = 2,440 km), current density peaks are 0.2 RM north and south of the magnetic equator. The peak‐to‐peak separation decreases with down‐tail distance, until the current density profile resembles that of a single‐peaked sheet. We find no correlation between the sheet geometry and long‐period variations in solar wind and magnetospheric conditions. We attribute the observed bifurcated structure in the current sheet to non‐adiabatic behavior (Speiser orbits) of the major plasma constituents in Mercury's magnetosphere (H+, Na+ and, to a lesser extent e−). Finally, we infer the spatial distribution of the current carriers by comparing a simple model of their resultant current sheets to observations. We find that, close to the planet, a combination of planetary sodium ions and solar wind protons with energies of a few keV are the main current carriers, but in the far‐tail region, the current is dominantly carried by solar wind protons.
Formation Mechanism of Warm SST Anomalies in 2010s Around Hawaii
Authors: Takahashi Naoya , Richards Kelvin J. , Schneider Niklas , Annamalai H. , Hsu Wei‐Ching , Nonaka Masami 
Published: October 2021

AbstractWarm sea surface temperature (SST) anomalies have been observed in the subtropical North Pacific around Hawaii in the recent decade, appearing from 2013. We examined the formation mechanisms of the warm SST anomalies in terms of relative contribution of atmospheric surface forcing and oceanic dynamics, using the latest reanalysis products from ECMWF (ERA5 for atmosphere and ORAS5 for ocean). Results of the mixed layer temperature budget diagnosis in the target area (10–20°N and 180°–160°W) indicates that contributions from anomalous latent heat fluxes to the subtropical SST anomalies are dominant. Oceanic advective contributions play a secondary role, dampen the SST anomalies, and are negatively correlated (r = −0.38) with the latent heat fluxes. For example, the +1.0 K SST increased from 2011 to 2015 results from +1.5 K contributions from sum of surface heat flux and −0.5 K from meridional oceanic advection. The anti‐correlation between atmospheric forcing and oceanic meridional advection reflects co‐variations of wind‐driven latent heat flux and meridional Ekman advection due to the weakening of the zonal component of the surface winds.
Rheological and Mechanical Layering of the Crust Underneath Thumbprint Terrains in Arcadia Planitia, Mars
Authors: De Toffoli B. , Massironi M. , Mazzarini F. , Bistacchi A. 
Published: October 2021

AbstractIn the area of Arcadia Planitia in the Northern hemisphere of Mars, mounds indicating fluid and sediment emissions have been already recognized. Here, we show that through fractal and fracture‐spacing analyses of a large vent population it is possible to infer the mechanical layering of the underlying subsurface. Our work includes the mapping of an entire population of 9,028 vents over an area of 122,000 km2. The analysis of mound distribution at the surface led to the formulation of inferences about the subsurface feeding conduits, and to the identification of three mechanical discontinuities at c. 4–5, c. 14–23, and c. 50–55 km. This evidence matches the mechanical stratigraphy recorded by the InSight NASA mission, and is in agreement with independent previous subsurface global modeling, supporting our conclusions.
Pancreatic cancer cells render tumor-associated macrophages metabolically reprogrammed by a GARP and DNA methylation-mediated mechanism
Authors: Zhang Mengwen , Pan Xingyi , Fujiwara Kenji , Jurcak Noelle , Muth Stephen , Zhou Jiaojiao , Xiao Qian , Li Anqi , Che Xu , Li Zihai , Zheng Lei 
Published: October 2021

AbstractHow tumor-associated macrophages transit from a predominant antitumor M1-like phenotype to a protumoral M2-like phenotype during the development of pancreatic ductal adenocarcinoma (PDA) remains to be elucidated. We thus conducted a study by employing a PDA-macrophage co-culture system, an “orthotopic” PDA syngeneic mouse model, and human PDA specimens, together with macrophages derived from GARP knockout mice and multiple analytic tools including whole-genome RNA sequencing, DNA methylation arrays, multiplex immunohistochemistry, metabolism measurement, and invasion/metastasis assessment. Our study showed that PDA tumor cells, through direct cell–cell contact, induce DNA methylation and downregulation of a panel of glucose metabolism and OXPHOS genes selectively in M1-like macrophages, leading to a suppressed glucose metabolic status in M1-like but not in M2-like macrophages. Following the interaction with PDA tumor cells, M1-like macrophages are reprogrammed phenotypically to M2-like macrophages. The interaction between M1-like macrophages and PDA cells is mediated by GARP and integrin αV/β8, respectively. Blocking either GARP or integrin would suppress tumor-induced DNA methylation in Nqo-1 gene and the reprogramming of M1-like macrophages. Glucose-response genes such as Il-10 are subsequently activated in tumor-educated M1-like macrophages. Partly through Il-10 and its receptor Il-10R on tumor cells, M1-like macrophages functionally acquire a pro-cancerous capability. Both exogenous M1-like and M2-like macrophages promote metastasis in a mouse model of PDA while such a role of M1-like macrophages is dependent on DNA methylation. Our results suggest that PDA cells are able to reprogram M1-like macrophages metabolically and functionally through a GARP-dependent and DNA methylation-mediated mechanism to adopt a pro-cancerous fate.
Autophagy is induced and modulated by cholesterol depletion through transcription of autophagy-related genes and attenuation of flux
Authors: Shapira Keren E. , Shapira Guy , Schmukler Eran , Pasmanik-Chor Metsada , Shomron Noam , Pinkas-Kramarski Ronit , Henis Yoav I. , Ehrlich Marcelo 
Published: October 2021

AbstractPerturbations to cellular homeostasis, including reduction of the cholesterol level, induce autophagy, a self-digestion process of cellular constituents through an autophagosomal–lysosomal pathway. In accord with its function as a membrane organizer and metabolic sentinel, the cellular response to cholesterol depletion comprises multiple phenomena, including the activation of transcriptional responses, accumulation of reactive oxygen species (ROS), and activation of stress-related signaling pathways. However, the molecular mechanisms by which cholesterol depletion regulates autophagy and the putative involvement of transcriptional responses, ROS and/or stress-related signaling in autophagy regulation in this biological context are not fully understood. Here, we find that cholesterol depletion regulates autophagy at three different levels. First, employing RNA-seq, we show that cholesterol depletion increases the expression of autophagy-related genes independent of ROS or JNK activity. Second, analysis of LC3 lipidation and intracellular localization, and of p62 levels and degradation kinetics, reveals that cholesterol depletion mediates autophagy induction while interfering with autophagic flux. Of note, only the latter depends on ROS accumulation and JNK activity. In view of the common use of cholesterol-reducing drugs as therapeutic agents, our findings have important implications for multiple cellular settings in which autophagy plays a prominent role.
Pupil responses associated with the perception of gravitational vertical under directional optic flows
Authors: Park Joo Hyun , Cho Sung Ik , Choi June , Han JungHyun , Rah Yoon Chan 
Published: October 2021

AbstractThis study assessed the pupil responses in the sensory integration of various directional optic flows during the perception of gravitational vertical. A total of 30 healthy participants were enrolled with normal responses to conventional subjective visual vertical (SVV) which was determined by measuring the difference (error angles) between the luminous line adjusted by the participants and the true vertical. SVV was performed under various types of rotational (5°/s, 10°/s, and 50°/s) and straight (5°/s and 10°/s) optic flows presented via a head-mounted display. Error angles (°) of the SVV and changes in pupil diameters (mm) were measured to evaluate the changes in the visually assessed subjective verticality and related cognitive demands. Significantly larger error angles were measured under rotational optic flows than under straight flows (p < 0.001). The error angles also significantly increased as the velocity of the rotational optic flow increased. The pupil diameter increased after starting the test, demonstrating the largest diameter during the final fine-tuning around the vertical. Significantly larger pupil changes were identified under rotational flows than in straight flows. Pupil changes were significantly correlated with error angles and the visual analog scale representing subjective difficulties during each test. These results suggest increased pupil changes for integrating more challenging visual sensory inputs in the process of gravity perception.
Transcriptomic analysis of Rhodococcus opacus R7 grown on polyethylene by RNA-seq
Authors: Zampolli Jessica , Orro Alessandro , Manconi Andrea , Ami Diletta , Natalello Antonino , Di Gennaro Patrizia 
Published: October 2021

AbstractPlastic waste management has become a global issue. Polyethylene (PE) is the most abundant synthetic plastic worldwide, and one of the most resistant to biodegradation. Indeed, few bacteria can degrade polyethylene. In this paper, the transcriptomic analysis unveiled for the first time Rhodococcus opacus R7 complex genetic system based on diverse oxidoreductases for polyethylene biodegradation. The RNA-seq allowed uncovering genes putatively involved in the first step of oxidation. In-depth investigations through preliminary bioinformatic analyses and enzymatic assays on the supernatant of R7 grown in the presence of PE confirmed the activation of genes encoding laccase-like enzymes. Moreover, the transcriptomic data allowed identifying candidate genes for the further steps of short aliphatic chain oxidation including alkB gene encoding an alkane monooxygenase, cyp450 gene encoding cytochrome P450 hydroxylase, and genes encoding membrane transporters. The PE biodegradative system was also validated by FTIR analysis on R7 cells grown on polyethylene.
Chronic kidney disease and pregnancy outcomes
Authors: Dvořák Jan , Koucký Michal , Jančová Eva , Mysliveček Marek , Tesař Vladimír , Pařízek Antonín 
Published: October 2021

AbstractPregnancy complicated by CKD is currently not fully understood topic. Outcome of pregnancy in patients with CKD is related to impaired glomerular filtration rate and the degree of proteinuria. In our study we evaluated the association of serum creatinine level and proteinuria with both maternal and fetal outcomes in the cohort of 84 pregnant patients with CKD. In CKD group we confirmed negative correlation of highest serum creatinine level in pregnancy to fetal weight (p value < 0.001) and gestation period (p value < 0.001). Likewise, negative correlation of preconception serum creatinine to fetal weight (p value < 0.001) and gestation period (p value 0.002). Negative correlation of proteinuria to gestation period (p value < 0.001) and fetal weight (p value < 0.001) was also demonstrated. CKD is serious risk factor for pregnancy outcome. Proteinuria and serum creatinine level should be examined before pregnancy and regularly monitored during pregnancy. Higher serum creatinine levels and higher proteinuria predispose to shorter gestation period and lower birth weight of the neonate.
Preliminary Evaluation of Applicants to Master's Programs in Speech-Language Pathology Using Vignettes and Criteria From a Holistic Review Process
Authors: Girolamo Teresa M. , Politzer-Ahles Stephen , Ghali Samantha , Williams Brittany Theresa 
Published: October 2021

Purpose:
Little is known about how others evaluate applicants to master's programs in speech-language pathology along criteria used during holistic review despite more programs adopting holistic review. This knowledge gap limits our understanding of whether holistic admissions may offer a more equitable pathway to entering speech-language pathology. This study investigated how faculty and PhD students evaluated applicants to master's speech-language pathology programs along criteria used during holistic review.

Method:

We administered a survey online through a Qualtrics platform. Respondents (
N
= 66) were faculty and PhD candidates in U.S. speech-language-hearing departments. Survey blocks included demographics, professional background, and vignettes. Vignettes featured profiles of applicants to master's programs in speech-language pathology. Vignettes systematically varied in the indicators of applicant criteria, which were specified at low, moderate, or high levels or not specified. After reading each vignette, respondents rated the applicant and indicated their admissions decision. Analysis included descriptives.

Results:
Relative to an applicant who was at a high level for all indicators except cultural and linguistic diversity, respondents ranked applicants who varied in their indicators of criteria levels lower. Respondents were also less likely to make an explicit “accept” decision (vs. “waitlist” or “reject”) for this latter group of applicants.

Conclusions:
Even when implementing criteria used during holistic review, applicants who vary from a “high-achieving” stereotype may still face barriers to entry. Future work is needed to understand the precise nature of how holistic admissions review may play out in actual practice and help increase diversity in the profession.
Amount of Frequency Compression in Bimodal Cochlear Implant Users Is a Poor Predictor for Audibility and Spatial Hearing
Authors: Sharma Snandan , Nogueira Waldo , van Opstal A. John , Chalupper Josef , Mens Lucas H. M. , van Wanrooij Marc M. 
Published: October 2021

Purpose:
Speech understanding in noise and horizontal sound localization is poor in most cochlear implant (CI) users with a hearing aid (bimodal stimulation). This study investigated the effect of static and less-extreme adaptive frequency compression in hearing aids on spatial hearing. By means of frequency compression, we aimed to restore high-frequency audibility, and thus improve sound localization and spatial speech recognition.

Method:
Sound-detection thresholds, sound localization, and spatial speech recognition were measured in eight bimodal CI users, with and without frequency compression. We tested two compression algorithms: a static algorithm, which compressed frequencies beyond the compression knee point (160 or 480 Hz), and an adaptive algorithm, which aimed to compress only consonants leaving vowels unaffected (adaptive knee-point frequencies from 736 to 2946 Hz).

Results:
Compression yielded a strong audibility benefit (high-frequency thresholds improved by 40 and 24 dB for static and adaptive compression, respectively), no meaningful improvement in localization performance (errors remained > 30 deg), and spatial speech recognition across all participants. Localization biases without compression (toward the hearing-aid and implant side for low- and high-frequency sounds, respectively) disappeared or reversed with compression. The audibility benefits provided to each bimodal user partially explained any individual improvements in localization performance; shifts in bias; and, for six out of eight participants, benefits in spatial speech recognition.

Conclusions:
We speculate that limiting factors such as a persistent hearing asymmetry and mismatch in spectral overlap prevent compression in bimodal users from improving sound localization. Therefore, the benefit in spatial release from masking by compression is likely due to a shift of attention to the ear with the better signal-to-noise ratio facilitated by compression, rather than an improved spatial selectivity.

Supplemental Material

https://doi.org/10.23641/asha.16869485