bluuebunny/crossref_metadata_2025_split huggingface dataset:
Insights into the metabolism and behaviour of Varroa destructor mites from analysis of their waste excretions
Authors: Posada-Florez Francisco , Sonenshine Daniel E. , Egekwu Noble I. , Rice Clifford , Lupitskyy Robert , Cook Steven C. 
Published: November 2018

AbstractVarroa destructor mites (Acari: Varroidae) are harmful ectoparasites of Apis mellifera honey bees. Female foundresses of wax-capped pupal host cells and their daughters feed on host fluids from open wounds on the host's integument. Details of V. destructor mite nutrition are forthcoming, and little is known about the potential physical effects on hosts from mite feeding. Chemical analysis of waste excretions can infer details of animals’ nutrition. Here, chemical analysis by high-performance liquid chromatography/mass spectrometry (HPLC-MS/MS) of mite excretions showed that the purine content of V. destructor waste consists of guanine with traces of hypoxanthine. Traces of uric acid and caffeine were also detected. Concentrations of guanine attenuated over time and excretions collected from senescing mites did not contain detectable guanine. Non-reproducing individual female mites maintained in vitro, housed in gelatin capsules and provided a honey bee pupa, deposited an average of nearly 18 excretions daily, mostly on the host's integument rather than on the capsule wall. The weight and volume of excretions suggest mites can consume nearly a microlitre of host fluids each day. Compounded over 10 days, this together with open wounds, could lead to substantial water loss and stress to developing pupae.
Pre-loss personal factors and prolonged grief disorder in bereaved mothers
Authors: Goldstein Richard D. , Petty Carter R. , Morris Sue E. , Human Melanie , Odendaal Hein , Elliott Amy , Tobacco Deb , Angal Jyoti , Brink Lucy , Kinney Hannah C. , Prigerson Holly G. ,   for the PASS Network
Published: November 2018

AbstractBackgroundIdentifying characteristics of individuals at greatest risk for prolonged grief disorder (PGD) can improve its detection and elucidate the etiology of the disorder. The Safe Passage Study, a study of women at high risk for sudden infant death syndrome (SIDS), prospectively examined the psychosocial functioning of women while monitoring their healthy pregnancies. Mothers whose infants died of SIDS were followed in bereavement.MethodsPre-loss data were collected from 12 000 pregnant mothers and analyzed for their associations with grief symptoms and PGD in 50 mothers whose infants died from SIDS, from 2 to 48 months after their infant's death, focusing on pre-loss risk factors of anxiety, depression, alcohol use, maternal age, the presence of other living children in the home, and previous child loss.ResultsThe presence of any four risk factors significantly predicted PGD for 24 months post-loss (p&lt; 0.003); 2–3 risk factors predicted PGD for 12 months (p= 0.02). PGD rates increased in the second post-loss year, converging in all groups to approximately 40% by 3 years. Pre-loss depressive symptoms were significantly associated with PGD. Higher alcohol intake and older maternal age were consistently positively associated with PGD. Predicted risk scores showed good discrimination between PGD and no PGD 6–24 months after loss (C-statistic = 0.83).ConclusionsA combination of personal risk factors predicted PGD in 2 years of bereavement. There is a convergence of risk groups to high rates at 2–3 years, marked by increased PGD rates in mothers at low risk. The risk factors showed different effects on PGD.
Extended state observer-based robust non-linear integral dynamic surface control for triaxial MEMS gyroscope
Authors: Hosseini-Pishrobat Mehran , Keighobadi Jafar 
Published: November 2018

SUMMARYThis paper reports an extended state observer (ESO)-based robust dynamic surface control (DSC) method for triaxial MEMS gyroscope applications. An ESO with non-linear gain function is designed to estimate both velocity and disturbance vectors of the gyroscope dynamics via measured position signals. Using the sector-bounded property of the non-linear gain function, the design of an $\mathcal{L}_2$-robust ESO is phrased as a convex optimization problem in terms of linear matrix inequalities (LMIs). Next, by using the estimated velocity and disturbance, a certainty equivalence tracking controller is designed based on DSC. To achieve an improved robustness and to remove static steady-state tracking errors, new non-linear integral error surfaces are incorporated into the DSC. Based on the energy-to-peak ($\mathcal{L}_2$-$\mathcal{L}_\infty$) performance criterion, a finite number of LMIs are derived to obtain the DSC gains. In order to prevent amplification of the measurement noise in the DSC error dynamics, a multi-objective convex optimization problem, which guarantees a prescribed $\mathcal{L}_2$-$\mathcal{L}_\infty$ performance bound, is considered. Finally, the efficacy of the proposed control method is illustrated by detailed software simulations.
COGNITIVE APTITUDES AND L2 SPEAKING PROFICIENCY
Authors: Granena Gisela 
Published: November 2018

AbstractThis study investigated the underlying structure of a set of eight cognitive tests from the two most recent language aptitude test batteries: the LLAMA (Meara, 2005) and the Hi-LAB (Linck et al., 2013) to see whether they had any underlying constructs in common. The study also examined whether any of the observed constructs could predict L2 speaking proficiency in terms of complexity, accuracy, or fluency. Participants were 135 college-level students learning Spanish as an L2 in the United States. Results showed that the LLAMA and the Hi-LAB include tests that tap the same constructs. Specifically, the tests from the two batteries loaded onto three different factors, interpreted as “Explicit Aptitude,” “Implicit Memory Ability,” and “Implicit Learning Ability.” The results further showed that Implicit Memory Ability was a significant predictor of L2 speed fluency and interacted with Implicit Learning Ability as a predictor of lexical complexity. This finding suggested that L2 learners with greater Implicit Memory Ability may be better at accessing and retrieving previously learned or known information effortlessly. In the case of lexical complexity, the effect of Implicit Memory Ability depended on the level of Implicit Learning Ability.
Alleviation of morphophysiological dormancy in seeds of the Australian arid-zone endemic shrub, Hibbertia glaberrima F. Muell. (Dilleniaceae)
Authors: Dalziell Emma L. , Erickson Todd E. , Hidayati Siti N. , Walck Jeffrey L. , Merritt David J. 
Published: November 2018

AbstractMorphophysiological dormancy (MPD) is predominantly found in seeds of temperate regions and is uncommon in arid biomes. MPD has been reported in a number of Hibbertia (Dilleniaceae) species of temperate Australia, and in a single species of the arid zone, H. glaberrima. This study aimed to examine the dormancy and germination ecology of seeds of H. glaberrima. Seeds were subjected to temperature stratification treatments designed to mimic summer and autumn conditions in the Pilbara region of Western Australia. Seed germination and embryo growth were measured. We also tested the interaction between temperature stratification and cycles of drying and wetting designed to mimic sporadic rainfall events. All temperature and moisture treatments were tested in combination (+/–) with the smoke-derived chemical karrikinolide (KAR1). Exposing dormant seeds to temperatures suitable for warm stratification (35°C) for ≥ 8 weeks, followed by incubation at 25°C, resulted in significantly higher germination compared with non-stratified seeds. Exposing seeds to dry/wet cycling in conjunction with temperature stratification did not significantly increase germination. Exposure to KAR1 increased germination under most conditions. Once seeds are shed during October to December, they are exposed to hot and sporadically wet conditions over summer, allowing MPD to be overcome in a proportion of the seed population. Seeds may germinate in autumn (March to April), in conjunction with cooler temperatures. More deeply dormant individuals may require more than one summer to overcome dormancy. Similar to other species occurring in fire-prone ecosystems, fire also plays a crucial role in the germination ecology of H. glaberrima.
Improvement of General Disaster Preparedness Belief Scale Based on Health Belief Model
Authors: Inal Ebru , Dogan Nuri 
Published: November 2018

AbstractIntroductionThe Health Belief Model (HBM) can be used as a guide in enhancing the peoples’ awareness, improving the motivation, and providing tools that address beliefs and attitudes toward general disaster preparedness (GDP).MethodsThe aim of this study was to improve and re-test all psychometric properties of the published General Disaster Preparedness Belief (GDPB) scale based on HBM carried out in the general population. This scale development study measured by 58 items was prepared under the same structure of the developed GDPB scale that measured 31 items before. This expanded scale was applied to 973 individuals. Firstly, the data from application of the expanded scale was examined under Exploratory Factor Analysis (EFA). Then, the estimations obtained from Confirmatory Factor Analysis (CFA) for the expanded scale with 45 items were compared with the estimations obtained from the previous scale with 31 items.ResultsThe EFA lead to the removal of 13 items and the retention of 45 items. The items which the factor loadings were below 0.30 and which gave the factor loadings for more dimension were excluded from the data set. A model measured six dimensions with 45 items was hypothesized: six items under perceived susceptibility, four items under perceived severity, six items under perceived benefits, 14 items under perceived barriers, five items under cues to action, and 10 items under self-efficacy. For CFA results, all estimations for factor loadings were significant. The scale with 45 items obtained in this study fit because Comparative Fit Index (CFI), Goodness of Fit Index (GFI), and Adjusted Goodness of Fit Index (AGFI) were over 0.95.ConclusionThese results suggest that the scale with 45 items shows improvement in the scale with 31 items. This study indicates that the GDPB scale with 45 items based on HBM has acceptable validity and reliability. This tool can be used in disaster preparedness surveys.InalE,DoganN.Improvement of General Disaster Preparedness Belief scale based on Health Belief Model.Prehosp Disaster Med.2018;33(6):627–636.
Hybrid metabolic network completion
Authors: FRIOUX CLÉMENCE , SCHAUB TORSTEN , SCHELLHORN SEBASTIAN , SIEGEL ANNE , WANKO PHILIPP 
Published: November 2018

AbstractMetabolic networks play a crucial role in biology since they capture all chemical reactions in an organism. While there are networks of high quality for many model organisms, networks for less studied organisms are often of poor quality and suffer from incompleteness. To this end, we introduced in previous work an answer set programming (ASP)-based approach to metabolic network completion. Although this qualitative approach allows for restoring moderately degraded networks, it fails to restore highly degraded ones. This is because it ignores quantitative constraints capturing reaction rates. To address this problem, we propose a hybrid approach to metabolic network completion that integrates our qualitative ASP approach with quantitative means for capturing reaction rates. We begin by formally reconciling existing stoichiometric and topological approaches to network completion in a unified formalism. With it, we develop a hybrid ASP encoding and rely upon the theory reasoning capacities of the ASP system clingo for solving the resulting logic program with linear constraints over reals. We empirically evaluate our approach by means of the metabolic network of Escherichia coli. Our analysis shows that our novel approach yields greatly superior results than obtainable from purely qualitative or quantitative approaches.
The relationship between maternal obesity and diabetes during pregnancy on offspring kidney structure and function in humans: a systematic review
Authors: Lee Y. Q. , Collins C. E. , Gordon A. , Rae K. M. , Pringle K. G. 
Published: November 2018

AbstractEvidence from animal models indicates that exposure to an obesogenic or hyperglycemic intrauterine environment adversely impacts offspring kidney development and renal function. However, evidence from human studies has not been evaluated systematically. Therefore, the aim of this systematic review was to synthesize current research in humans that has examined the relationship between gestational obesity and/or diabetes and offspring kidney structure and function. Systematic electronic database searches were conducted of five relevant databases (CINAHL, Cochrane, EMBASE, MEDLINE and Scopus). Preferred Reporting Items for Systematic Reviews and Meta-analysis guidelines were followed, and articles screened by two independent reviewers generated nine eligible papers for inclusion. Six studies were assessed as being of ‘neutral’ quality, two of ‘negative’ and one ‘positive’ quality. Observational studies suggest that offspring exposed to a hyperglycemic intrauterine environment are more likely to display markers of renal dysfunction and are at higher risk of end-stage renal disease. There was limited and inconsistent evidence for a link between exposure to an obesogenic intrauterine environment and offspring renal outcomes. Offspring renal outcome measures across studies were diverse, with a large variation in offspring age at follow-up, limiting comparability across studies. The collective current body of evidence suggests that intrauterine exposure to maternal obesity and/or diabetes adversely impacts renal programming in offspring, with an increased risk of kidney disease in adulthood. Further high-quality, longitudinal, prospective cohort studies that measure indicators of offspring renal development and function, including fetal kidney volume and albuminuria, at standardized follow-up time points, are warranted.
Influence of Competitive Duration of Blessed Milkthistle (Silybum marianum) with Wheat
Authors: Rehman Abdul , Qamar Rafi , Safdar Muhammad Ehsan , Rehman Atique-ur , Javeed Hafiz Muhammad Rashad , Shoaib Muhammad , Maqbool Rizwan , Abbas Tasawer 
Published: November 2018

AbstractBlessed milkthistle is considered to be a noxious weed in irrigated and rainfed areas of Pakistan due to its strong allelopathic effects on food crops. For sustainable wheat production, it is necessary to know the critical time for weed removal (CTWR) for blessed milkthistle to allow wheat growers to get maximum benefit from control of this weed. A field study was conducted in 2014 and 2015 at the College of Agriculture, University of Sargodha, Pakistan, to investigate the CTWR of blessed milkthistle in wheat. The field experiments were designed with seven treatments; weed free (control); 2, 3, 4, 5, and 6 wk after emergence (WAE); and weedy check. At 6 WAE, a significant reduction was noted in plant height (8% and 17%), number of productive tillers per square meter (16% and 16%), spike length (23% and 54%), grains per spike (13% and 34%), 1,000-grain weight (14% and 37%), grain yield (20% and 21%), and biological yield (24% and 50%) compared with control (weed-free plots) during 2014 and 2015, respectively. The logistic model supports the field study results and suggests that blessed milkthistle’s CTWR for wheat is 1 to 5 WAE based on acceptable yield losses of 5% to 15% during both years. The experimental results and logistic model indicate that blessed milkthistle should be controlled within 1 to 5 WAE to get better wheat crop harvests without compromising farmers’ profits. To our knowledge, this is the first study ever in Pakistan regarding the CTWR in terms of WAE of blessed milkthistle and could help other scientists create weed control strategies for other areas of the country.
Spezifische Techniken in kognitiv-verhaltenstherapeutischen Ausbildungstherapien
Authors: D’Errico Louisa , Call Manuela , Vogel Eva , Bents Hinrich , Mander Johannes 
Published: November 2018

Zusammenfassung. Theoretischer Hintergrund: Zur Frage, was Psychotherapie wirksam macht, wurde in den letzten Jahren viel hinsichtlich Wirkfaktoren und Techniken geforscht. Allerdings besteht weiterhin eine Forschungslücke in der Untersuchung konkreter kognitiv-verhaltenstherapeutischer Interventionen in der Psychotherapieausbildung. Fragestellung: Ziel war die Validierung des Heidelberger Inventars Kognitiv-Behavioraler Interventionen (HIKBI), welches diesbezüglich Facetten zentraler Interventionen aus Sicht von Ausbildungstherapeut_innen erfasst. Methode: In 589 ambulanten Ausbildungstherapien wurden das HIKBI und etablierte Prozess- und Outcome-Fragebögen ausgefüllt. Ergebnisse: Es ergab sich beim HIKBI eine eindeutige Faktorenstruktur, die Subskalen wiesen eingeschränkt akzeptable bis gute Reliabilitäten (.59 ≤ α ≤ .82) auf. Hinweise für die konvergente Validität lagen durch signifikante Zusammenhänge mit allgemeinen Wirkfaktoren vor. Jedoch zeigten sich keine statistisch signifikanten Zusammenhänge mit symptomatischen Outcomes. Schlussfolgerung: Mit dem HIKBI liegt ein psychometrisch akzeptables Messinstrument zur Erfassung spezifischer KVT-Techniken in der verhaltenstherapeutischen Ausbildung vor.
Active Seismotectonic Deformation in Front of the Dolomites Indenter, Eastern Alps
Authors: Reiter F. , Freudenthaler C. , Hausmann H. , Ortner H. , Lenhardt W. , Brandner R. 
Published: November 2018

AbstractWe use earthquake focal mechanisms to study present‐day deformation and stress in the western part of the Eastern European Alps. We define the following regions, based on seismicity and kinematically compatible focal mechanism types: (1) the northern and western parts of the Dolomites indenter, the western and central Tauern Window, and the northern Alpine margin and foreland lack significant seismicity. (2) The indenter boundaries are characterized by strike‐slip faulting. Based on earthquake and geodetic data, the western and northern indenter boundaries are active sinistral and dextral strike‐slip/oblique slip faults. (3) West and north of the indenter corner, we observe normal and strike‐slip faulting in an up to 70 km‐wide zone. From west to east, the minimum horizontal stress rotates clockwise about 10–20°, from NE to ENE. (4) North of (3), east of the Swiss/Austrian border, we find evidence for N to NNW directed thrust faulting, and local orogen‐parallel extension. From our results and geodetic data, we infer that relative to a fixed northern foreland, NNW directed indentation is transferred at depth via the Sub‐Tauern thrust system to this 100‐km‐wide zone of localized thrusting. A lack of evidence for major, active strike‐slip faulting north of the Tauern Window is in line with geodetic data, which show no significant velocity difference between the northern part of the Eastern Alps and their foreland.
An Empirical Examination on the Role of Water User Associations for Irrigation Management in Rural China
Authors: Wang Yahua , Wu Jing 
Published: November 2018

AbstractWater user associations (WUAs) are commonly considered a beneficial institution to improve irrigation management. As one of the core components of irrigation reform in China, the number of WUAs has increased from a few in 1995 to nearly 100,000 today. This study examines the performance of irrigation management between villages with WUAs and villages without WUAs, with a set of 15,566 households collected in 941 randomly selected villages from 22 provinces in China. It finds that WUAs do not show overall superiority in almost all aspects in terms of improving irrigation management performance compared with traditional management institutions. Using the institutional analysis and development framework, it further demonstrates the diverse factors that jointly contribute to irrigation management performance, among which the WUAs play small role. The unsatisfactory performance of WUAs may be attributed to the absence of the conditions to support the WUAs functioning in China's centralized political system. To activate the WUAs, policies are recommended such as organizing WUAs based on hydrologic boundary, declining the overlap between the leadership of WUAs and that of the villages, endowing the WUA with more autonomy, and encouraging farmers to participate in the decision‐making process. A broader implication of this study is that there are diverse policy options to address water management challenges, which can be selected according to the specific condition. Achieving the congruence between institutional design and local context holds the key for sustainable water management.
Volcanic Hail Detected With GPS: The 2011 Eruption of Grímsvötn Volcano, Iceland
Authors: Grapenthin R. , Hreinsdóttir S. , Van Eaton A. R. 
Published: November 2018

AbstractVolcanic plumes are challenging to detect and characterize rapidly, but insights into processes such as hail formation or ash aggregation are valuable to hazard forecasts during volcanic crises. Global Navigation Satellite System (GNSS, which includes GPS) signals traveling from satellites to ground receivers can be disturbed by volcanic plumes. To date, two effects aiding plume detection from GNSS observations have been described: (a) ash‐rich plumes scatter the signal, lowering the signal‐to‐noise ratio (SNR), and (b) some plumes refract and thus delay GNSS signals. Using GNSS data from the VEI 4 2011 Grímsvötn eruption, we show that tephra and water contents of plumes distinctly affect SNR and phase residuals. The signals suggest high‐altitude freezing of plume water into volcanic hail—corroborated by 1‐D modeling and volcanic hail deposits. Combining GNSS SNR and phase residual analyses is valuable for detecting processes that rapidly scrub fine ash out of the atmosphere.
Late‐July Barrier for Subseasonal Forecast of Summer Daily Maximum Temperature Over Yangtze River Basin
Authors: Yang Jing , Zhu Tao , Gao Miaoni , Lin Hai , Wang Bin , Bao Qing 
Published: November 2018

AbstractDynamical subseasonal forecast skill of summer daily maximum temperature (Tmax) over East China was evaluated based on a 20‐year (1995–2014) subseasonal reforecast data set from the European Centre for Medium‐range Weather Forecasts. A significant late‐July barrier of subseasonal forecast skill was identified for the Tmax over the Yangtze River Basin, which concurs with a reduction in the prediction skill for the local 500‐hPa geopotential height. This barrier period corresponds to an abrupt transitional phase of the climatological intraseasonal oscillation when the western North Pacific subtropical high abruptly migrates northward from Yangtze River Basin to northern China. The transitional phase of the climatological intraseasonal oscillation features the largest day‐to‐day variance in the position of western North Pacific subtropical high, which may cause the drop of the subseasonal forecast skill for both the geopotential height and Tmax. The results indicate that the atmospheric subseasonal predictability may be strongly affected by the phases of the local climatological intraseasonal variation.