bluuebunny/crossref_metadata_2025_split huggingface dataset:
Last 1100 yr of precipitation variability in western central Asia as revealed by tree-ring data from the Pamir-Alay
Authors: Opała-Owczarek Magdalena , Niedźwiedź Tadeusz 
Published: May 2018

AbstractWe developed a 1108 yr chronology of tree-ring widths, based on 64 Himalayan pencil juniper (Juniperus semiglobosa Regel) trees, for the Pamir-Alay Mountains, central Asia. Dendroclimatological analysis demonstrates that precipitation has significant effects on tree growth in the semiarid mountainous area of northwestern Tajikistan located on the edge of the great midlatitude Karakum and Kyzylkum deserts. The highest level of linear correlation (r=0.67) is observed between tree growth and seasonalised winter (previous December–February) precipitation. Our studies also show that moisture (precipitation/Palmer Drought Severity Index) from the previous June to the current September was the dominant climatic factor accounting for interannual variations in tree-ring width, suggesting that this should be considered in climate reconstruction. Using the transfer function method, we reconstructed the region’s drought history over the period AD 908–2015. The results of this moisture reconstruction showed that the most recent millennium was characterised by series of dry and wet stages. The driest periods occurred before 1000, 1200–1250, and at the end of the eighteenth century and beginning of the nineteenth century. The wettest conditions existed in 1650–1700 and after 1990.
Exploring pathways to late Holocene increased surface wetness in subarctic peatlands of eastern Canada
Authors: van Bellen Simon , Garneau Michelle , Baird Andy , Bourgault Marc-André , Quillet Anne 
Published: May 2018

AbstractThe poor fens of the Laforge region, northeastern Canada, have developed under subarctic conditions. They are characterized by a microtopography of large pools and low, narrow strings. Paleorecords suggest some of these systems were once ombrotrophic and relatively dry. Taking account of their current bioclimatic position, we aimed to explore the possible pathways towards the current wet state, a process referred to as “aqualysis”. We combined paleoecological methods applied to a peat core with conceptual modelling to identify factors that might plausibly explain aqualysis. Reconstructions showed the Abeille peatland became minerotrophic with high water tables between 2400 and 2100 cal yr BP. Conceptual modelling, supported by simulations using the numerical DigiBog model, allowed us to identify the effects of cooling and increased precipitation on productivity, decay, peat hydraulic conductivity and vertical peat accumulation. Both cooling and increased precipitation were required for aqualysis to occur and for wet surface conditions to persist to the present day. Increased recharge from the catchment, which also restricted drainage from the peatland center laterally, was likely critical for the development of minerotrophic conditions. The scenario of cooling and wetting in these peatlands is supported by available paleoclimate records for eastern Canada.
Adherence to the New Nordic Diet during pregnancy and subsequent maternal weight development: a study conducted in the Norwegian Mother and Child Cohort Study (MoBa)
Authors: Skreden Marianne , Hillesund Elisabet R. , Wills Andrew K. , Brantsæter Anne Lise , Bere Elling , Øverby Nina C. 
Published: May 2018

AbstractThe rising prevalence of overweight and obesity is a worldwide public health challenge. Pregnancy and beyond is a potentially important window for future weight gain in women. We investigated associations between maternal adherence to the New Nordic diet (NND) during pregnancy and maternal BMI trajectories from delivery to 8 years post delivery. Data are from the Norwegian Mother and Child Cohort. Pregnant women from all of Norway were recruited between 1999 and 2008, and 55 056 are included in the present analysis. A previously constructed diet score, NND, was used to assess adherence to the diet. The score favours intake of Nordic fruits, root vegetables, cabbages, potatoes, oatmeal porridge, whole grains, wild fish, game, berries, milk and water. Linear spline multi-level models were used to estimate the association. We found that women with higher adherence to the NND pattern during pregnancy had on average lower post-partum BMI trajectories and slightly less weight gain up to 8 years post delivery compared with the lower NND adherers. These associations remained after adjustment for physical activity, education, maternal age, smoking and parity (mean diff at delivery (high v. low adherers): −0·3 kg/m2; 95 % CI −0·4, −0·2; mean diff at 8 years: −0·5 kg/m2; 95 % CI −0·6, −0·4), and were not explained by differences in energy intake or by exclusive breast-feeding duration. Similar patterns of associations were seen with trajectories of overweight/obesity as the outcome. In conclusion, our findings suggest that the NND may have beneficial properties to long-term weight regulation among women post-partum.
Low birth weight is associated with increased fat intake in school-aged boys
Authors: Bischoff Adrianne R. , Portella André K. , Paquet Catherine , Dalle Molle Roberta , Faber Aida , Arora Narendra , Levitan Robert D. , Silveira Patrícia P. , Dube Laurette 
Published: May 2018

AbstractEvidence suggests that both high and low birth weight children have increased the risk for obesity and the metabolic syndrome in adulthood. Previously we have found altered feeding behaviour and food preferences in pre-school children and adults born with low birth weight. In this study, we investigated if birth weight was associated with different intake of fat, carbohydrate and/or protein at 6–12 years of age. This is a cross-sectional study where 255 guardians answered online and telephone questions including anthropometrics and demographic data, parental family food rules (food control, encouragement and restriction) and a complete web-based FFQ for their children (130 boys and 125 girls). Baseline demographic and parental food rules characteristics did not differ accordingly to sex. Linear regression models were conducted separately for each sex, adjusted for income, age and maternal age. There were no differences in total energy intake, but energy density (ED, energy content/g) was negatively associated with birth weight in boys. Macronutrient analysis showed that ED intake was from a greater intake of fat. Birth weight was not a significant predictor of protein and carbohydrate intake in boys. In girls, we saw a positive correlation between fat intake and cholesterol intakev. birth weight, but no association with ED intake (results did not remain after adjustment). The study shows that low birth weight is associated with altered fat intake in childhood in a sex-specific manner. It is likely that biological factors such as fetal programming of homoeostatic and/or hedonic pathways influencing food preferences are involved in this process.
A Neo-Kantian Account of Perception
Authors: Stevenson Leslie 
Published: May 2018

AbstractI suggest a reconstruction of Kant's theory of perception – in particular his notions of intuition, concept, sensible impression, sensation, synthesis and combination – informed by the progress of philosophy and human and animal psychology since his time. I take from Burge the distinction between unconceptualized perception of objects (found in animals, infants, and to some extent in adult humans) and our conceptualized, judgmental perceptual experience. Kant concentrated on the latter, but he can be seen to leave room for the former, especially if we make clearer distinctions than he did between sensible impression and sensation, and between synthesis and combination.
Startle habituation, sensory, and sensorimotor gating in trauma-affected refugees with posttraumatic stress disorder
Authors: Meteran Hanieh , Vindbjerg Erik , Uldall Sigurd Wiingaard , Glenthøj Birte , Carlsson Jessica , Oranje Bob 
Published: May 2018

AbstractBackgroundImpairments in mechanisms underlying early information processing have been reported in posttraumatic stress disorder (PTSD); however, findings in the existing literature are inconsistent. This current study capitalizes on technological advancements of research on electroencephalographic event-related potential and applies it to a novel PTSD population consisting of trauma-affected refugees.MethodsA total of 25 trauma-affected refugees with PTSD and 20 healthy refugee controls matched on age, gender, and country of origin completed the study. In two distinct auditory paradigms sensory gating, indexed as P50 suppression, and sensorimotor gating, indexed as prepulse inhibition (PPI), startle reactivity, and habituation of the eye-blink startle response were examined. Within the P50 paradigm, N100 and P200 amplitudes were also assessed. In addition, correlations between psychophysiological and clinical measures were investigated.ResultsPTSD patients demonstrated significantly elevated stimuli responses across the two paradigms, reflected in both increased amplitude of the eye-blink startle response, and increased N100 and P200 amplitudes relative to healthy refugee controls. We found a trend toward reduced habituation in the patients, while the groups did not differ in PPI and P50 suppression. Among correlations, we found that eye-blink startle responses were associated with higher overall illness severity and lower levels of functioning.ConclusionsFundamental gating mechanisms appeared intact, while the pattern of deficits in trauma-affected refugees with PTSD point toward a different form of sensory overload, an overall neural hypersensitivity and disrupted the ability to down-regulate stimuli responses. This study represents an initial step toward elucidating sensory processing deficits in a PTSD subgroup.
The Annexe of the Roman Fort at Slack, West Yorkshire: Excavations by B.R. Hartley in 1968–9
Authors: Bidwell Paul , Croom Alexandra , Hodgson Nick 
Published: May 2018

AbstractThis paper represents the final publication of excavations by Brian Hartley in the northern annexe of the Roman fort at Slack, West Yorkshire, carried out half a century ago, but still providing rare evidence for activity within an annexe and the nature of its defences. Hartley concluded that the annexe enclosed a civilianvicusof Trajanic–Hadrianic date, although its defensive enclosure was provided only in the Hadrianic period. This report upholds that conclusion. In the light of recent claims of later Roman occupation at Slack, Hartley's conclusion that the site was abandoned byc.a.d.140 is examined and upheld. It is proposed that a second annexe at Slack enclosed the fort baths (and possibly amansio) and by examining the Slack annexes in the context of other fort/annexe plans an attempt is made to distinguish between annexes enclosing fortviciand those enclosing official or military activities.
Moral externalization may precede, not follow, subjective preferences
Authors: Kaznatcheev Artem , Shultz Thomas R. 
Published: May 2018

AbstractWe offer four counterarguments against Stanford's dismissal of moral externalization as an ancestral condition, based on requirements for ancestral states, mismatch between theoretical and empirical games, passively correlated interactions, and social interfaces that prevent agents’ knowing game payoffs. The fact that children's externalized phenomenology precedes their discovery of subjectivized phenomenology also suggests that externalized phenomenology is an ancestral condition.
Is all morality or just prosociality externalized?
Authors: Poulin Michael J. 
Published: May 2018

AbstractIt is more likely that externalized morality that facilitated cooperation (externalized prosociality) was selected for versus other types of moral impulses. Recent research suggests that those other moral impulses may actually be at root prosocial, in that judgments about them are indirectly about avoidance of harm. Externalized prosociality may help explain why prosocial behavior benefits individuals.
Externalization of moral demands does not motivate exclusion of non-cooperators: A defense of a subjectivist moral psychology
Authors: Schulz Armin W. 
Published: May 2018

AbstractIt is not clear how a moral demand alone can motivate an agent to exclude those who fail to act as the demand states. A more plausible hypothesis for the evolution of human moral cognition is based on seeing moral demands as subjective, but inherently conjunctive. This subjectivist-conjunctive proposal can still account for the apparent externalization of moral demands.
Disgust as a mechanism for externalization: Coordination and disassociation
Authors: Wiegman Isaac 
Published: May 2018

AbstractI extend Stanford's proposal in two ways by focusing on a possible mechanism of externalization: disgust. First, I argue that externalization also has value for solving coordination problems where interests of different groups coincide. Second, Stanford's proposal also holds promise for explaining why people “over-comply” with norms through disassociation, or the avoidance of actions that merely appear to violate norms.
A cognitive, non-selectionist account of moral externalism
Authors: Zinser Jason 
Published: May 2018

AbstractA general feature of our moral psychology is that we feel that some moral demands are motivated externally. Stanford explains this feature with an evolutionary account, such that moral externalism was selected for its ability to facilitate prosocial interactions. Alternatively, I argue that a cognitive, non-selectionist account of moral externalism is a more parsimonious explanation.
A methodological synthesis of self-paced reading in second language research
Authors: MARSDEN EMMA , THOMPSON SOPHIE , PLONSKY LUKE 
Published: May 2018

ABSTRACTSelf-paced reading tests (SPRs) are being increasingly adopted by second language (L2) researchers. Using SPR with L2 populations presents specific challenges, and its use is still evolving in L2 research (as well as in first language research, in many respects). Although the topic of several narrative overviews (Keating & Jegerski, 2015; Roberts, 2016), we do not have a comprehensive picture of its usage in L2 research. Building on the growing body of systematic reviews of research practices in applied linguistics (e.g., Liu & Brown, 2015; Plonsky, 2013), we report a methodological synthesis of the rationales, study contexts, and methodological decision making in L2 SPR research. Our comprehensive search yielded 74 SPRs used in L2 research. Each instrument was coded along 121 parameters, including: reported rationales and study characteristics, indicating the scope and nature of L2 SPR research agendas; design and analysis features and reporting practices, determining instrument validity and reliability; and materials transparency, affecting reproducibility and systematicity of agendas. Our findings indicate an urgent need to standardize the use and reporting of this technique, requiring empirical investigation to inform methodological decision making. We also identify several areas (e.g., study design, sample demographics, instrument construction, data analysis, and transparency) where SPR research could be improved to enrich our understanding of L2 processing, reading, and learning.
The effects of uncertain forest conservation benefits on long-run deforestation in the Brazilian Amazon
Authors: Di Corato Luca , Moretto Michele , Vergalli Sergio 
Published: May 2018

AbstractDeforestation results from the trade-off between benefits from forest conservation and economic profits associated with land development. However, as net gains are often uncertain, irreversible land development may later be regretted. To better inform conservation policies, we use a real options framework to model irreversible forest conversion under uncertain conservation benefits and determine the associated optimal long-run average rate of deforestation. We then analyze the impact of the demand for agricultural products on the rate of deforestation in the Brazilian Amazon. In a scenario analysis for the nine states of the Brazilian Amazon, we calculate: (i) the expected time for exhaustion of the current forest stock; and (ii) the potential forest coverage for the next 20, 100 and 200 years. Our results suggest that if forest benefits grow over time at a sufficiently high speed, they may significantly slow down deforestation. In contrast, the higher their volatility, the faster deforestation proceeds.
An Invariant Rate‐ and State‐Dependent Friction Formulation for Viscoeastoplastic Earthquake Cycle Simulations
Authors: Herrendörfer Robert , Gerya Taras , van Dinther Ylona 
Published: May 2018

AbstractWe present a 2‐D numerical modeling approach for simulating a wide slip spectrum in a viscoelastoplastic continuum. The key new model component is an invariant reformulation of the classical rate‐ and state‐dependent friction equations, which is designed for earthquake simulations along spontaneously evolving faults. Here we describe the methodology and demonstrate that it is accurate and stable in a setup consisting of a mature strike‐slip fault zone. We show that the nucleation and propagation of an earthquake are well resolved, as supported by a good agreement with various analytical approximations, including those of the nucleation and cohesive zone lengths. Results generally converge with respect to grid size, time step, and other numerical parameters. The convergence rate with respect to grid size depends on the internodal averaging scheme, is influenced by wave reflections, and deteriorates for inclined faults. The simulated slip spectrum, ranging from stable sliding at the loading rate to periodic aseismic slip to periodic seismic slip as a function of nucleation size, is in general agreement with the literature. In this simple setup, dynamic pressure does not play a significant role. By analyzing the role of viscous deformation, we identify and confirm by our simulations a theoretical viscosity threshold below which earthquakes cannot nucleate. This threshold is shown to depend on the reference strength of rate‐ and state‐dependent friction and the loading strain rate, which is in agreement with previous work on the brittle‐ductile transition.
Seismological Evidence for a Remnant Oceanic Slab in the Western Junggar, Northwest China
Authors: Wu Shucheng , Huang Rong , Xu Yixian , Yang Yingjie , Jiang Xiaohuan , Zhu Lupei 
Published: May 2018

AbstractThe western Junggar is situated in the southwestern Central Asian Orogenic Belt, and its origin is believed to be related to either intracontinental arc or intraoceanic arc‐related subduction system. However, the mode of subduction is still contentious. In this study, we build a high‐resolution 3‐D model of the crust of the western Junggar to constrain the subduction mode. By deploying a seismic array consisting of 31 portable broadband seismic stations from September 2013 to December 2013, we determine the Moho depth beneath every station using a H‐κ method and the Moho variations along three NW‐SE profiles using a common conversion point stacking method. We also construct a 3‐D crustal S wave velocity model using ambient noise tomography. Our results reveal significant variations of Moho depths across the study region and a pronounced Moho offset between the Zaire mountains and the western Junggar basin. Ambient noise tomography shows that a high shear velocity layer (>3.9 km/s) is observed in the middle/lower crust of the western Junggar Basin, which is overlaid by a low velocity upper crust. The high‐velocity body gradually dips northwestward with depth beneath the Zaire mountains. The speed of this high‐velocity body is consistent with the calculated S wave speed of various metamorphic facies of mid‐ocean ridge basalt under the P/T conditions of middle/lower crust in the western Junggar. Our seismic observations support a northwest paleosubduction model for the evolution of the western Junggar, in which a remnant oceanic slab is still trapped in the western Junggar.
Lunar Orientale Impact Basin Secondary Craters: Spatial Distribution, Size‐Frequency Distribution, and Estimation of Fragment Size
Authors: Guo Dijun , Liu Jianzhong , Head James W. , Kreslavsky M. A. 
Published: May 2018

AbstractSecondary impact craters, features created by projectiles ejected from a primary impact, contain important information about the primary cratering event and the nature and distribution of its ejecta. The Orientale impact basin (D ~ 930 km) is the youngest and the least degraded large impact basin on the Moon and has the most recognizable secondary impact craters. We identified and mapped 2,728 secondary craters in the investigated area of ~1.66 × 107 km2, covering an area from the rim of Orientale to six radii. Secondary crater diameters range from ~2 to 27 km, and the median diameter decreases as distance increases. Secondary craters are concentrated predominantly in the northwest and southwest. The ejecta deposit pattern inferred from secondary crater distribution suggests that the Orientale basin was formed by an oblique impact in which the downrange direction was 240°–265° in azimuth, and the incidence angle was steeper than 20°. The cumulative size‐frequency distribution of mapped secondary craters steepens as diameter increases and is very well approximated with a Weibull distribution with an exponent 1.32. A widely used crater scaling relationship predicts that the fragments that produced the secondary craters were predominantly in ~0.5–2‐km diameter range over the investigated area; the diameter of the largest fragment, however, decreases with increasing distance from Orientale. On the basis of the diameter of the largest secondary crater of Orientale, and other craters and basins, the largest secondary crater of the South Pole‐Aitken basin is estimated to be ~40 km in diameter. We explore the implications of these findings for the evolution of the megaregolith and future sample return missions.
Thermal Emission From Saturn's Polar Cyclones
Authors: Achterberg R. K. , Flasar F. M. , Bjoraker G. L. , Hesman B. E. , Gorius N. J. P. , Mamoutkine A. A. , Fletcher L. N. , Segura M. E. , Edgington S. G. , Brooks S. M. 
Published: May 2018

AbstractWe have used data from the Cassini Composite Infrared Spectrometer to map the temperatures in Saturn's polar cyclones at the highest spatial resolution obtained during the Cassini mission. We find temperature contrasts of 7 K in the upper troposphere within 1.4° of both poles, roughly 50 percent larger than earlier measurements at lower spatial resolution. The polar hot spots weaken with depth, disappearing near 500 mbar. In the stratosphere, the polar hot spot becomes broader, extending 4° from the poles, and weakens with altitude disappearing near 1 mbar. A thermal relaxation model shows that the tropospheric hot spot is consistent with adiabatic heating from subsidence with a vertical velocity of about −0.05 mm/s above 500 mbar. The observed temperature gradients imply that the winds in the polar cyclone decay with increasing altitude over roughly three pressure scale heights above the 200‐mbar level.