bluuebunny/crossref_metadata_2025_split huggingface dataset:
Nanostructural evidence of mechanical aging and performance loss in ballistic fibers
Authors: Howarter John A. , Liu Ming , McDonough Walter G. , Soles Christopher , Holmes Gale A. 
Published: September 2017

ABSTRACTIt is understood that the ballistic resistance of aromatic polyamide fibers is related to the fiber's ultimate tensile strength, strain‐to‐failure, and Young's modulus. Ideal high‐performance ballistic materials maximize these properties while minimizing material density. Equally important is long‐term mechanical and chemical stability: the fibers should not exhibit performance loss over their lifetime. However, less is known quantitatively about their modes of degradation, and experimental methods to quantify the aging and degradation in these fibers are critical. Multiple variations of next generation high‐performance fibers have been investigated under chemical and mechanical accelerated aging conditions. Performance losses have been empirically correlated to chemical degradation of the polymer chain and nanostructural changes in the fiber morphology through X‐ray photoelectron spectroscopy (XPS). Here, we introduce positron annihilation lifetime spectroscopy measurements as a sensitive method to quantify the early onset of damage in the flexed fibers as quantified through changes in the nanoscale void structure in the material. Published 2017.† J. Polym. Sci., Part B: Polym. Phys. 2017, 55, 1711–1717
Integrative structure modeling with the Integrative Modeling Platform
Authors: Webb Benjamin , Viswanath Shruthi , Bonomi Massimiliano , Pellarin Riccardo , Greenberg Charles H. , Saltzberg Daniel , Sali Andrej 
Published: September 2017

AbstractBuilding models of a biological system that are consistent with the myriad data available is one of the key challenges in biology. Modeling the structure and dynamics of macromolecular assemblies, for example, can give insights into how biological systems work, evolved, might be controlled, and even designed. Integrative structure modeling casts the building of structural models as a computational optimization problem, for which information about the assembly is encoded into a scoring function that evaluates candidate models. Here, we describe our open source software suite for integrative structure modeling, Integrative Modeling Platform (https://integrativemodeling.org), and demonstrate its use.
Characterization of the mechanism of action of the fungicide fenpicoxamid and its metabolite UK‐2A
Authors: Young David H , Wang Nick X , Meyer Stacy T , Avila‐Adame Cruz 
Published: September 2017

AbstractBACKGROUNDFenpicoxamid is a new fungicide for control of Zymoseptoria tritici, and is a derivative of the natural product UK‐2A. Its mode of action and target site interactions have been investigated.RESULTSUK‐2A strongly inhibited cytochrome c reductase, whereas fenpicoxamid was much less active, consistent with UK‐2A being the fungicidally active species generated from fenpicoxamid by metabolism. Both compounds caused rapid loss of mitochondrial membrane potential in Z. tritici spores. In Saccharomyces cerevisiae, amino acid substitutions N31K, G37C and L198F at the Qi quinone binding site of cytochrome b reduced sensitivity to fenpicoxamid, UK‐2A and antimycin A. Activity of fenpicoxamid was not reduced by the G143A exchange responsible for strobilurin resistance. A docking pose for UK‐2A at the Qi site overlaid that of antimycin A. Activity towards Botrytis cinerea was potentiated by salicylhydroxamic acid, showing an ability of alternative respiration to mitigate activity. Fungitoxicity assays against Z. tritici field isolates showed no cross‐resistance to strobilurin, azole or benzimidazole fungicides.CONCLUSIONFenpicoxamid is a Qi inhibitor fungicide that provides a new mode of action for Z. tritici control. Mutational and modeling studies suggest that the active species UK‐2A binds at the Qi site in a similar, but not identical, fashion to antimycin A. © 2017 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
The extended Hulburt–Hirschfelder‐long‐range oscillator model for direct‐potential‐fit analysis
Authors: Hajigeorgiou Photos G. 
Published: September 2017

AbstractIn the present work, an extended Hulburt–Hirschfelder oscillator model is proposed as a means of simplifying potential energy functions for direct‐potential‐fit analyses. The new potential energy function is joined smoothly to the long‐range inverse‐power dispersion energy expression. The new model is employed in direct‐potential‐fits using spectroscopic line positions that involve the ground electronic states of the principal isotopologues of hydrogen iodide and carbon monoxide, and the ground and first singlet‐sigma excited states of hydrogen fluoride and hydrogen chloride. The present methodology is found to lead to compact, flexible, and robust representations for the potential energy that compare favorably with the results of past work where more complicated models were employed.
Mixed control of hidden Markov jump systems
Authors: de Oliveira A.M. , Costa O.L.V. 
Published: September 2017

SummaryIn this work, we study the mixed
control for Markov jump linear systems with hidden Markov parameters. The hidden Markov process is denoted by
, where the nonobservable component θ(k) represents the mode of operation of the system, whereas
represents the observable component provided by a detector. The goal is to obtain design techniques for mixed
control problems, with the controllers depending only on the estimate
, for problems formulated in 3 different forms: (i) minimizing an upper bound on the
norm subject to a given restriction on the
norm; (ii) minimizing an upper bound on the
norm, while limiting the
norm; and (iii) minimizing a weighted combination of upper bounds of both the
and
norms. We propose also new conditions for synthesizing robust controllers under parametric uncertainty in the detector probabilities and in the transition probabilities. The so‐called cluster case for the mixed
control problem is also analyzed under the detector approach. The results are illustrated by means of 2 numerical examples.
The use of behavioural metrics to evaluate fishway efficiency
Authors: Ovidio M. , Sonny D. , Dierckx A. , Watthez Q. , Bourguignon S. , de le Court B. , Detrait O. , Benitez J.P. 
Published: September 2017

AbstractFishways are installed worldwide to facilitate accessibility to functional habitats and to increase the ecological continuity of rivers. Their evaluations are increasing, but complete studies in the field with wild individuals are still scarce. In the lower Bocq River (Belgium), a pool type fishway was installed in 2011. A combined passive‐integrated‐transponder‐tag and radio‐telemetry system was designed and installed downstream of the dam and in the fishway to analyse fine‐scale individual fish behaviour. Three fish species (brown trout, European grayling, and barbel) were captured in the river; n = 125 fish were tagged and released downstream of the fishway. Behavioural metrics were proposed and used in order to attain a comprehensive view on the efficiency of the fishway, including attraction and entrance efficiency, searching and passage delays, and overall and adjusted passage efficiency. The results indicate a major problem in terms of attraction efficiency (48.9% for the trout, 20.5% for the grayling, and 41.2% for the barbel) and time to find the entrance of the fishway (mean 65.1 hr for the trout and 538.9 hr for the grayling). For fish that succeed to approach the entrance of the fishway, the passage efficiency was 86.9% for the trout, 55.5% for the grayling, and 7.1% for the barbel. The time taken to cross the structure was reasonable for the salmonids (mean < 1.5 hr for trout and grayling) but very long (21 hr) for the barbel. Our results underline the necessity of a holistic approach to evaluate fishway efficiency using precise comprehensive metrics and hydraulic characterization.
The Consequences of Integrating Stakeholder Engagement in Sustainable Development (Environmental Perspectives)
Authors: Salem Milad Abdelnabi , Shawtari Fekri , Shamsudin Mohd Farid , Hussain Hafezali Bin Iqbal 
Published: September 2017

AbstractThis paper aims to identify the consequences of integrating stakeholder engagement in sustainable development represented by environmental performance using data from 226 industrial corporations. To the best of our knowledge, there is no empirical evidence on how three levels of stakeholder integration (knowledge, interaction and adoptive behaviour) might affect environmental performance as represented by a reduction in both resource usage and waste. Additionally, related research has been conducted in developed countries, with little attention being directed to developing countries. The paper aims to fill these gaps by providing empirical evidence on how the stakeholder theory might work in less‐developed countries. The study opts for a cross‐sectional study using a self‐reported questionnaire. Structural equation modelling indicated that engaging stakeholders in corporate activities would result in less damage to the environment. However, the knowledge of stakeholders per se will not lead to any reduction in either waste or resource usage. Copyright © 2017 John Wiley & Sons, Ltd and ERP Environment
A simple approach to measuring thick organic films using the XPS inelastic background
Authors: Shard Alexander G. , Spencer Steve J. 
Published: September 2017

In this work, we explore the possibility of finding a simple mathematical function that describes XPS background intensities as a function of energy and depth of emission. We describe the shape of the global structure of the background in XPS survey spectra for organic overlayer films with thicknesses greater than ~10 nm. In this situation, the shape of XPS backgrounds becomes statistical, and the detailed structure of, for example, energy‐loss functions and elastic‐scattering cross sections can be disregarded. Using Irganox 1010 as a model organic overlayer on silicon dioxide, gold, and silver substrates, a consistent description of the XPS background can be found, and overlayer thicknesses greater than 50 nm can be measured in the case of gold substrates. Furthermore, by using a suitable subset of these spectra, it is possible to separate the influence of overlayer thickness, electron kinetic energy, and intensity on the global shape of the spectrum. We show that it is possible to fully describe the shape of calibrated XPS survey spectra with reasonable accuracy for samples that have organic overlayers using only binding energy and sensitivity factor data. The same functions are shown to provide a reasonable description of the XPS spectra of silicon with an oxide overlayer.
Chiroptically Active Metallic Nanohelices with Helical Anisotropy
Authors: Huang Zhifeng , Liu Junjun 
Published: September 2017

AbstractManipulation of circular polarization states of light in the ultraviolet‐visible‐near infrared range, which cannot be operated using natural materials, is of fundamental interest derived from a wide range of chirality‐associated optical, chemical and biological applications. To achieve this objective, chiral metamaterials made of metallic nanohelices (NHs) have been artificially designed and generated. The circular polarization manipulation is as a result of helical anisotropy and localized surface plasmon resonance of metallic NHs, and engineering helical structures and metallic composition gives rise to flexible tailoring of the circular polarization manipulation. Herein, we review the latest development of metallic NHs in terms of fabrication, fundamentally optical and magnetic properties, and chiroptical applications, followed by envisioning prospective applications closely related to molecular chirality. We strongly believe that the helicity‐induced anisotropy of metallic NHs will provide us a wide range of opportunities to tackle some prominent problems and challenges intrinsically associated with the natural homochirality.
Sonography of the ankle: The lateral ankle and ankle sprains
Authors: McKiernan Sharmaine , Fenech Michelle , Fox Deborah , Stewart Ian 
Published: September 2017

AbstractAnkle sprains can be considered a relatively common injury particularly from sports injuries. While a sprain is generally a benign injury, symptoms can persist and lead to long‐term disability and instability. This article includes an overview of the lateral ankle including ligament and tendon anatomy, scanning technique and information on the common sprains the sonographer may encounter. It is important that sonographers are familiar with the lateral ankle anatomy and potential injuries and how complicated an ankle sprain can be.
The Dangers of Test Preparation: What Students Learn (and Don't Learn) About Reading Comprehension From Test‐Centric Literacy Instruction
Authors: Davis Dennis S. , Vehabovic Nermin 
Published: September 2017

AbstractThe authors offer guidance on recognizing and resisting test‐centric instruction in reading comprehension. They posit that five practices indicate a test‐centric view of comprehension: when the tested content is privileged, when the test becomes the text, when annotation requirements replace strategic thinking, when test items frame how students think, and when item‐level data are overinterpreted. The authors express concern that test‐centric literacy instruction has started to replace research‐based instructional practices more and more. Using a sociocultural lens, the authors describe what young readers are likely to learn (and not learn) about reading comprehension when they are immersed in this form of instruction. The article provides talking points that teachers can use to bolster their efforts to resist test preparation pressures that they may experience in their schools.
An overview of reciprocalL1‐regularization for high dimensional regression data
Authors: Song Qifan 
Published: September 2017

High dimensional data plays a key role in the modern statistical analysis. A common objective for the high dimensional data analysis is to perform model selection, and penalized likelihood method is one of the most popular approaches. Typical penalty functions are usually symmetric about 0, continuous and nondecreasing in (0, ∞). In this review article, we will focus on a special type of penalty function, the so call reciprocal Lasso (rLasso) penalty. TherLassopenalty functions are decreasing in (0, ∞), discontinuous at 0, and converge to infinity when the coefficients approach zero. Although uncommon, this choice of penalty is intuitively appealing if one seeks a parsimonious model fitting. In this article, we will provide an overview for the motivation, theory, and computational challenges of thisrLassopenalty, and we will also compare the theoretical properties and empirical performance ofrLassowith other popular penalty choices.WIREs Comput Stat2018, 10:e1416. doi: 10.1002/wics.1416This article is categorized under:Statistical Learning and Exploratory Methods of the Data Sciences > Modeling Methods
Strategy and organization research in operations management
Authors: Anand Gopesh , Gray John V. 
Published: September 2017

AbstractIn a September 2015 editorial (Guide and Ketokivi, 2015), the co‐editors‐in‐chief of the Journal of Operations Management restructured the management of submissions into departments by substantive domain. This essay expands upon their brief description of the Strategy and Organization Department. While chiefly seeking to clarify what we see as the department's content domain, we also offer insights on how to maximize the contribution of operations management research to the strategy and organization literature.
Screening for attention deficit–hyperactivity disorder (ADHD) symptomatology in adult mental health clinics
Authors: Adamis D. , Graffeo I. , Kumar R. , Meagher D. , O’Neill D. , Mulligan O. , Murthy S. , O’Mahony E. , McCarthy G. , Gavin B. , McNicholas F. 
Published: September 2017

ObjectivesThis study estimates the symptomatology of attention deficit–hyperactivity disorder (ADHD) in adult mental health services (AMHS) outpatient clinics.MethodsAll consecutive patients attending any of the outpatients’ clinics in Sligo/Leitrim AMHS were invited to participate. Participants completed the Adult ADHD Self-Report Scale (ASRS) and the Wender Utah Rating Scale (WURS) self-report. Clinical notes were reviewed to identify those with a pre-existing ADHD diagnosis.ResultsFrom 822 attending the clinics, 62 did not meet inclusion criteria, 97 declined to participate and 29 had incomplete data in either of the screening scales, leaving 634 (77%) eligible for full study analysis. Mean age was 40.38 (s.d.: 12.85), and 326 (51.4%) were females. In total, 215 (33.9%) screened positive on the WURS for childhood onset ADHD and 219 (34.5%) participants scored positive on the ASRS. Applying a more stringent criteria of scoring above cut-offs on both scales, suggested 131 (20.7%) screened positive on both. Only three (2.3%) had a prior clinical diagnosis.ConclusionsThis preliminary study suggests the possibility of relatively higher rates of ADHD in a general AMHS than previously thought, however, given the possibility of overlapping symptoms with other major psychiatric disorders in adulthood and recall bias further research is needed before drawing firm conclusions.
The association between systolic blood pressure variability with depression, cognitive decline and white matter hyperintensities: the 3C Dijon MRI study
Authors: Tully P. J. , Debette S. , Tzourio C. 
Published: September 2017

AbstractBackgroundAccumulating evidence links blood pressure variability (BPV) with white matter hyperintensities (WMH) and stroke. The longitudinal association between BPV with late onset depression (LOD) and cognitive decline remains unexplored.MethodsProspective cohort study of 2812 participant's age ⩾65 years (median age 72 years, 63.6% female) without dementia or stroke. Serial clinic visits assessed blood pressure, cognitive function, depression disorder, and depressive symptoms. A brain magnetic resonance imaging (MRI) substudy was performed in 1275 persons to examine possible associations with WMH.ResultsThe interaction between symptomatic LOD and systolic BPV was associated with cognitive decline on the Isaac Set Test [slope −4.45; 95% confidence interval (CI) −8.92 to −0.16,p= 0.04], Benton Visual Retention Test (slope −0.89; 95% CI −1.77 to −0.01,p= 0.049), Mini Mental State Examination (slope −1.08; 95% CI −1.86 to −0.30,p= 0.007) and Finger Tapping Test (slope −7.53; 95% CI −13.71 to −1.34,p= 0.017) but not Trail Making Test-A or -B/A. The MRI substudy demonstrated that systolic BPV was associated with cognitive decline via interactions with depression and total WMH volume, but this was not dependent on either deep or periventricular WMH volumes.ConclusionsThe findings show that the interaction between systolic BPV with symptomatic depression and WMH increases cognitive decline in persons ⩾65 years of age. Future work could extend these findings by examining systolic BPV in relation to cognitive decline and WMH in older populations with depression.
Performance of rain-fed Aman rice yield in Bangladesh in the presence of climate change
Authors: Sarker Md. Abdur Rashid , Alam Khorshed , Gow Jeff 
Published: September 2017

AbstractThis paper uses the framework of the Just–Pope production function to evaluate the impacts of climate change on yields of the rainfed Aman rice crop in Bangladesh. It analyses disaggregated district-level data on climate variables and Aman rice yield over a 48 year time horizon. The results reveal that changes in maximum temperatures have had positive and negative effects on yield in the linear and quadratic functional forms, respectively. However, the elasticity values in the variance function confirm that maximum temperature is risk-increasing for Aman rice while minimum temperature is likely to decrease yield variability. Rainfall has become risk-increasing for Aman rice. Based on three climate change scenarios, this paper also reveals that future climate change is expected to increase the variability of Aman rice yields. Finally, statistically significant dummies for different in-country climate zones require zone-specific adaptation policies to reduce the adverse impacts of climate change.
Optimizing methods for rearing mated queens and establishing new colony of Oecophylla longinoda (Hymenoptera: Formicidae)
Authors: Rwegasira Rozalia G. , Mwatawala Maulid W. , Rwegasira Gration M. , Axelsen Jörgen 
Published: September 2017

AbstractOecophyllaspp. are used as biocontrol agents for many types of insect pests. A large and stable population is essential for effective control of pests. Colonies ofOecophyllaspp. can be transplanted from wild habitats into orchards. Transplanted colonies can only survive in the presence of egg laying queens. It is difficult to locate nests with egg laying queens in large colonies that may sometimes contain more than 100 nests. Therefore, the need to explore and develop methods for rearing newly mated queens in nurseries may not be over emphasized, hence the current study. In the first experiment, we tested three rearing methods on queen survival and colony establishment. In the second experiment, we compared feeding techniques of different weaver ants on young colony growth. We observed that queens were best reared under continuous, indirect access to water. The first workers emerged earlier (32 days on average) in indirect and direct continuous access to water methods than on limited access to water (sprinkled) (38 days on average). Moreover, rearing mated queens under continuous indirect access and continuous direct access to water methods saved labour and time, because of limited attendance to the colonies. Availability of water, sugar solution and different sources of protein throughout improved the growth of young colonies. Likewise, the number of workers increased rapidly. Therefore rearing mated queens in nurseries is possible and would minimize hustles in hunting for the colonies and their queens in the wilderness.
Endoderm Jagged induces liver and pancreas duct lineage in zebrafish
Authors: Zhang Danhua , Gates Keith P. , Barske Lindsey , Wang Guangliang , Lancman Joseph J. , Zeng Xin-Xin I. , Groff Megan , Wang Kasper , Parsons Michael J. , Crump J. Gage , Dong P. Duc Si 
Published: September 2017

AbstractLiver duct paucity is characteristic of children born with Alagille Syndrome (ALGS), a disease associated with JAGGED1 mutations. Here, we report that zebrafish embryos with compound homozygous mutations in two Notch ligand genes, jagged1b (jag1b) and jagged2b (jag2b) exhibit a complete loss of canonical Notch activity and duct cells within the liver and exocrine pancreas, whereas hepatocyte and acinar pancreas development is not affected. Further, animal chimera studies demonstrate that wild-type endoderm cells within the liver and pancreas can rescue Notch activity and duct lineage specification in adjacent cells lacking jag1b and jag2b expression. We conclude that these two Notch ligands are directly and solely responsible for all duct lineage specification in these organs in zebrafish. Our study uncovers genes required for lineage specification of the intrahepatopancreatic duct cells, challenges the role of duct cells as progenitors, and suggests a genetic mechanism for ALGS ductal paucity.