bluuebunny/crossref_metadata_2025_split huggingface dataset:
Statistical modelling of bacterial promoter sequences for regulatory motif discovery with the help of transcriptome data: application to Listeria monocytogenes
Authors: Sultan Ibrahim , Fromion Vincent , Schbath Sophie , Nicolas Pierre 
Published: August 2019

AbstractAutomatic de novo identification of the main regulons of a bacterium from genome and transcriptome data remains a challenge. To address this task, we propose a statistical model of promoter DNA sequences that can use information on exact positions of the transcription start sites and condition-dependent expression profiles. Two main novelties are to allow overlaps between motif occurrences and to incorporate covariates summarising expression profiles (e.g. coordinates in projection spaces or hierarchical clustering trees). All parameters are estimated using a dedicated trans-dimensional Markov chain Monte Carlo algorithm that adjusts, simultaneously, for many motifs and many expression covariates: the width and palindromic properties of the corresponding position-weight matrices, the number of parameters to describe position with respect to the transcription start site, and the choice of relevant expression covariates. A data-set of transcription start sites and expression profiles available for the Listeria monocytogenes is analysed. The results validate the approach and provide a new global view of the transcription regulatory network of this important model food-borne pathogen. A previously unreported motif that may play an important role in the regulation of growth was found in promoter regions of ribosomal protein genes.
Land snail dispersal, abundance and diversity on green roofs
Authors: McKinney Michael L. , Gladstone Nicholas S. , Lentz Jillian G. , Jackson Faith A. 
Published: August 2019

AbstractWe present the first major systematic study of land snail diversity on green roofs. We surveyed 27 green roofs and the adjacent ground habitat in six major cities in the southeastern United States. We found a total of 18 species of land snails, with three considered to be non-native, invasive species. The majority of land snails encountered in surveys are widespread, generalist species, typically adapted to open habitats. Twelve of the land snails encountered are “greenhouse” species that are very commonly transported via the horticultural trade. Therefore, we infer that at least some land snail species are introduced to green roofs via initial green roof installation and associated landscaping. Additionally, some similarity between roof and ground populations indicates dispersal from nearby ground habitats. The major determinants of snail species diversity and community composition are largely derived from local environmental conditions that are significantly correlated to the quality of green roof maintenance regime and plant diversity. Roof area, height, and age are seemingly not significant characteristics that dictate land snail species richness.
Effects of trap confinement on personality measurements in two terrestrial rodents
Authors: Brehm Allison M. , Tironi Sara , Mortelliti Alessio 
Published: August 2019

AbstractIn recent years individual differences in the behavior of animals, or personalities, have been shown to influence the response of individuals to changing environments and have important ecological implications. As researchers strive to understand and predict the responses of individuals and populations to anthropogenic changes, personality studies in wild populations will likely continue to increase. Studies of personality in wild populations often require that animals are live-trapped before behavioral observation can occur; however, it is unknown what impact live trapping may have on the behavior of trapped individuals. Specifically, if the duration of trap confinement directly influences behavior, then by obtaining wild animals through live-trapping are we confounding the very measurements we are most interested in? To investigate this question, we performed a study using two small mammal species. We positioned high-definition trail cameras on Longworth small mammal traps in the field to observe capture events and record the time of capture. We then measured personality in captured deer mice (Peromyscus maniculatus) and southern red-backed voles (Myodes gapperi) using three standardized tests. With a repeatability analysis, we confirmed which behaviors could be considered personality traits, and through linear and generalized linear models, we found that the time an animal had spent confined to a trap before testing did not affect the majority of behaviors exhibited. Our results showed two weak behavioral effects of confinement duration on boldness and docility depending on whether an individual had been trapped previously. Our results suggest that personality measurements of wild, trapped small mammals are not determined by trapping procedures, but that researchers should control for whether an animal is naïve to trapping during analysis.
Cross-cultural adaptation and psychometric evaluation of the Yoruba version of Oswestry disability index
Authors: Mbada Chidozie Emmanuel , Oguntoyinbo Oluwabunmi Esther , Fasuyi Francis Oluwafunso , Idowu Opeyemi Ayodiipo , Odole Adesola Christiana , Ayanniyi Olusola , Johnson Olubusola Esther , Orimolade Elkanah Ayodele , Oladiran Ajibola Babatunde , Fatoye Francis 
Published: August 2019

AbstractIntroductionLow Back Pain is a common public health problem worsened by maladaptive beliefs and incongruent back pain behaviour. It is imperative to develop outcome measures to assess these beliefs among patients with chronic LBP. This study aimed to cross-culturally adapt and determine the psychometric properties of the Yoruba version of the ODI (ODI-Y).MethodsThe ODI-Y was cross-culturally adapted following the process involving forward translation, synthesis, backward translation, expert review, and pilot testing. One hundred and thirty-six patients with chronic LBP took part in the validation of the ODI-Y; 86 of these individuals took part in the test-retest reliability (within 1-week interval) of the translated instrument. Internal consistency and test-retest reliability of the ODI-Y were determined using the Cronbach’s alpha and intra-class correlation. Other psychometric properties explored included the factor structure and fit, convergent validity, standard error of measurement and the minimal detectable change.ResultsThe mean age of the respondents was 50.5±10.6years. The ODI-Y showed a high internal consistency, with a Cronbach’s alpha (α) of 0.81. Test-retest of the Yoruba version of the ODI within 1-week interval yielded an Intra-Class Correlation coefficient of 0.89. The ODI-Y yielded a two-factor structure which accounted for 51.7% of the variance but showed poor fit. Convergent of ODI-Y with the visual analogue scale was moderate (r=0.30; p=0.00). The standard error of measurement and minimal detectable change of the ODI-Y were 2.0 and 5.5.ConclusionsThe ODI was adapted into the Yoruba language and proved to have a good factor structure and psychometric properties that replicated the results of other obtainable versions. We recommend it for use among Yoruba speaking patients with low-back pain.
K-mer counting with low memory consumption enables fast clustering of single-cell sequencing data without read alignment
Authors: Shi Christina Huan , Yip Kevin Y. 
Published: August 2019

AbstractK-mer counting has many applications in sequencing data processing and analysis. However, sequencing errors can produce many false k-mers that substantially increase the memory requirement during counting. We propose a fast k-mer counting method, CQF-deNoise, which has a novel component for dynamically identifying and removing false k-mers while preserving counting accuracy. Compared with four state-of-the-art k-mer counting methods, CQF-deNoise consumed 49-76% less memory than the second best method, but still ran competitively fast. The k-mer counts from CQF-deNoise produced cell clusters from single-cell RNA-seq data highly consistent with CellRanger but required only 5% of the running time at the same memory consumption, suggesting that CQF-deNoise can be used for a preview of cell clusters for an early detection of potential data problems, before running a much more time-consuming full analysis pipeline.
Segmentation in intangible heritage of humanity (ICH) events: the Oruro Carnival
Authors: Pérez-Gálvez Jesús Claudio , Gomez-Casero Gema , Choque Tito Juan , Jara Alba Carol Angélica 
Published: August 2019

PurposeThe purpose of this paper is to characterize the international tourists who visit a cultural event, such as the Oruro Carnival (Bolivia), that is catalogued as Intangible Cultural Heritage of Humanity by UNESCO.Design/methodology/approachTo achieve this purpose, a segmentation is made based on the combination of two theoretical models used and contrasted in similar research: the model of McKercher (2002), based on the cultural motivations to go to a destination, and that of Poriaet al.(2003), based on the emotional perception of the visitor in relation to the heritage they visit.FindingsFour types of tourists are thus identified: alternative, cultural, emotional and patrimonial. Likewise, the research includes an assessment of the most relevant tourist attributes linked to the Oruro Carnival, which is much more positive among international tourists with greater cultural motivation and emotional bonding.Originality/valueThe principal originality factor and innovation is analysing the cultural motivations and the emotional perception of the visitor in relation to the heritage they visit.
Performance evaluation of hazelnut oil with copper nanoparticles - a new entrant for sustainable lubrication
Authors: Shafi Wani K. , Raina Ankush , Ul Haq Mir Irfan 
Published: August 2019

PurposeThis paper aims to investigate the friction and wear performance of Hazelnut oil with copper (Cu) nano additives.Design/methodology/approachThe experiments were performed on a pin-on-disc tribometer in boundary and mixed lubrication regimes. Copper nanoparticles were added in 0.5 and 1 Wt.% concentrations and corresponding Stribeck curves were generated with a base oil and with oil containing Cu nanoparticles. Surface analysis of aluminium 6061 pins was conducted using an optical microscope, scanning electron microscope and energy dispersive spectroscopy.FindingsThe lubricant with 0.5 Wt.% Cu nanoparticles exhibited better results. An improvement of around 80 per cent in coefficient of friction and around 99 per cent in specific wear rate was observed. The film formation capability of the Cu nanoparticles led to an overall improvement in tribological properties of the base oil.OriginalityExperiments were performed to evaluate the tribological performance of a new lubricant (Hazelnut oil) using Cu nanoparticles. The results obtained herein suggest that Hazelnut oil has a great potential to replace the conventional mineral oils in the field of industrial lubrication.
Study on the influence of round pits arrangement patterns on tribological properties of journal bearings
Authors: Mao Yazhou , Jianxi Yang , Wenjing Xu , Yonggang Liu 
Published: August 2019

Purpose
The purpose of this paper is to investigate the effect of round pits arrangement patterns on tribological properties of journal bearing. In this paper, the tribological behaviors of journal bearing with different arrangement patterns under lubrication condition were studied based on M-2000 friction and wear tester.

Design/methodology/approach
The friction and wear of journal bearing contact surface were simulated by ANSYS. The wear mechanism of bearing contact surfaces was investigated by the means of energy dispersive spectrum analysis on the surface morphology and friction and wear status of the journal bearing specimens by Scanning Electron Microscopy (SEM) and Energy Dispersive Spectrometer (EDS). Besides, the wearing capacity of the textured bearing was predicted by using the GM (1,1) and Grey–Markov model.

Findings
As the loads increase, the friction coefficient of journal bearing specimens decrease first and then increase slowly. The higher rotation speed, the lower friction coefficient and the faster temperature build-up. The main friction method of the bearing sample is three-body friction. The existence of texture can effectively reduce friction and wear. In many arrangement patterns, the best is 4# bearing with round pits cross-arrangement pattern. Its texturing diameters are 60 µm and 125 µm, and the spacing and depth are 200 µm and 25 µm, respectively. In addition, the Grey–Markov model prediction result is more accurate and fit the experimental value better.

Originality/value
The friction and wear mechanism is helpful for scientific research and engineers to understand the tribological behaviors and engineering applications of textured bearing. The wear capacity of textured bearing is predicted by using the Grey–Markov model, which provides technical help and theoretical guidance for the service life and reliability of textured bearing.
Effect of non-Newtonian magneto-elastohydrodynamic on performance characteristics of slider-bearings
Authors: Mouda Mouhcine , Nabhani Mohamed , El Khlifi Mohamed 
Published: August 2019

Purpose
This study aims to examine the magneto-elastohydrodynamic effect on finite-width slider-bearings lubrication using a non-Newtonian lubricant.

Design/methodology/approach
Based on the magneto-hydrodynamic (MHD) theory and Stokes micro-continuum mechanics, the modified two-dimensional Reynolds equation including bearing deformation was derived.

Findings
It is found that the bearing deformation diminishes the load-capacity and increases the friction coefficient in comparison with the rigid case. However, the non-Newtonian effect increases load-capacity but decreases the friction coefficient. Moreover, the use of a transverse magnetic field increases both the friction coefficient and load capacity.

Originality/value
This study combines for the first time MHD and elastic deformation effects on finite-width slider-bearings using a non-Newtonian lubricant.
CPG-fuzzy-based control of a cownose-ray-like fish robot
Authors: Cao Yong , Lu Yang , Cai Yueri , Bi Shusheng , Pan Guang 
Published: August 2019

Purpose
This paper aims to imitate a cownose ray to develop a fish robot with paired flexible multi-fin-ray oscillating pectoral fins (OPFs) and control it to accomplish vivid stable 3-D motions using central pattern generators (CPGs) and fuzzy algorithm.

Design/methodology/approach
The cownose ray’s asymmetric sine-like oscillations were analyzed. Then a cownose-ray-like fish robot named Robo-ray was developed, which has paired flexible multi-fin-ray OPFs to actively control the fin shape and two tail fins to control the depth. To solve the problem of coordinated control for multi-degree-of-freedom Robo-ray, CPGs were adopted. An improved phase oscillator as a CPG unit with controlled amplitude, phase lag, smooth frequency transition and asymmetric oscillation characteristic was established. Furthermore, the CPG-fuzzy algorithm was developed for vivid stable 3-D motions. The open-loop speed control, the closed-loop control of depth and yaw were established.

Findings
The kinematic comparisons indicate that Robo-ray imitates the cownose ray realistically. The experimental results of closed-loop are obtained that the depth error of Robo-ray is less than ±100 mm and the course error is less than ±3°. Furthermore, the comprehensive experiments demonstrate that Robo-ray has high mobility, stability and robustness.

Originality/value
This research makes the fish robot with OPF propulsion closer to practical applications in complex underwater environment, for instance, ocean explorations, water quality monitoring and stealth military reconnaissance. In addition, Robo-ray can be taken as a scientific tool for better understanding of the hydrodynamics of OPF batoid.
NCSS notable trade book lesson plan: Windows written by Julia Denos
Authors: Evans Dana Michelle , Robertson William Boden , Swain Holly Hilboldt 
Published: August 2019

Purpose
The purpose of this paper, notable trade lesson plan, is to utilize a notable picture book in an early childhood application.

Design/methodology/approach
The approach of this notable trade book lesson plan is that of a hands-on interactive reading leading to a cultural exploration.

Findings
Young learners communicated connections with global communities, as they expressed similarities found between their evening routines and those of Germany. Opportunities arose for prekindergarten students to converse in a foreign language through a familiar song, as they discovered similarities and differences found in evening routines such as meals, games, family conversations and preparing for bedtime.

Originality/value
The value of this notable trade plan submission is in its ability to integrate geographical and cultural lessons into literacy contexts.
Teaching about American slavery and its connections to Christianity and the Bible
Authors: Shepherd Dan 
Published: August 2019

Purpose
A reluctance of social studies teachers to address religious matters prevents students from understanding the intersection of two important American institutions: slavery and Christianity. The continuing importance of religion in American life and the tension centered around race relations in this country make instruction in the connections between these two institutions invaluable. Evidence for the rich spiritual experience of enslaved African Americans is both ample and easily accessed; conversely, the misuse of Christianity by the oppressors and the biblical support for abolition commonly referenced during that period can be easily explored. The paper aims to discuss these issues.

Design/methodology/approach
In addition to these historical matters, modern results of the intersection of slavery and religion prove beneficial for study. While slavery itself is an irredeemable wound on American history, one that has repercussions even to this day, the encouraging impact of Christianity in the lives of enslaved African American and their progeny is worth noting.

Findings
Finally, this topic lends itself to progressive and engaging learning activities that are cooperative, project-based and authentic.

Originality/value
The teaching of history, which wrongly has a reputation for being lifeless and dull, can be improved and energized with this content of two topics still vital in America today: race and religion.
Interplay between paternal germline and maternal effects in shaping development: The overlooked importance of behavioural ecology
Authors: Champagne Frances A. 
Published: August 2019

Abstract

Environmental conditions can have a lasting epigenetic impact on development, and there is increasing evidence that these effects can be transmitted across generations. Evidence for parental transmission of epigenetic variation to offspring has been primarily focused on paternal epigenetic influences induced by a male's experience of nutritional, social and toxicological exposures.

There is an assumption in the literature that paternal influence on offspring in non‐biparental species is mediated exclusively through epigenetic transmission via the germline. However, integration of concepts from behavioural ecology into the study of parental transmission of environmental effects reveals the importance of mating tactics and maternal–paternal interplay in shaping resource allocation towards offspring in considering the mechanism(s) of epigenetic transmission.

This paper describes the current state of knowledge regarding paternal epigenetic germline effects, the interplay between maternal and paternal influences and the importance of considering the complex nature of reproduction when predicting the transmission of phenotype across generations. Further, this paper highlights how incorporating concepts from behavioural ecology into the study of epigenetic transmission can refine predictions of phenotypes that emerge and create a more integrated notion of development and inheritance.

It is proposed that theoretical and methodological approaches that consider the impact of reproductive context, which include mating dynamics, fertility, variation in parental life history and assessment of maternal effects, could improve the predictions made within studies of paternal epigenetic effects on offspring development.

A free Plain Language Summary can be found within the Supporting Information of this article.
Floral volatiles structure plant–pollinator interactions in a diverse community across the growing season
Authors: Burkle Laura A. , Runyon Justin B. 
Published: August 2019

Abstract

While the importance of floral odours for pollinator attraction relative to visual cues is increasingly appreciated, how they structure community‐level plant–pollinator interactions is poorly understood. Elucidating the functional roles of flowering plant species with respect to their floral volatile organic compounds (VOCs) and how those roles vary over the growing season is an initial step towards understanding the contribution of floral VOCs to plant–pollinator interaction structure.

We sampled the floral VOCs, phenologies and bee visitors of naturally growing plants in a montane meadow in the Northern Rocky Mountains of USA in order to acquire a base understanding of how floral VOCs and other plant traits may structure plant–pollinator interactions across the growing season. We expected forb species with floral VOCs that were original (far from the community mean) and unique (far from the nearest neighbour) would have few pollinating partners (i.e. specialists), while forbs with non‐original or highly variable floral VOCs would form the generalist core of interactors, thereby contributing to network nestedness (specialists interacting with nested subsets of generalists). Network modularity (patterns of distinct, highly connected subnetworks) could be influenced by groups of pollinators that are attracted to or repelled by certain floral bouquets.

Species blooming in early spring emitted similar floral VOC blends containing generalist attractants, whereas floral VOC complexity was highest in mid to late summer. Forb species varied in the originality, uniqueness, and intraspecific variation (i.e. dispersion) of their floral VOCs, indicating the potential for different functional roles in plant–pollinator networks. Specifically, the originality, uniqueness and dispersion of forb species’ floral VOCs increased across the growing season.

Floral VOCs influenced forb interactions with pollinators. Floral VOCs contributed to the nested structure, but not modular structure, of community‐level plant–pollinator network structure. Forb species with more original floral VOCs were less connected, while forb species emitting more compounds and with higher intraspecific variation in floral VOCs were more connected to pollinators.

These findings show that floral scent plays important roles in structuring bee–forb interactions and guiding seasonal patterns in complex communities. Understanding seasonal patterns in floral VOCs may have important implications for plant–pollinator interactions among communities differing in species composition, or as shifts occur in suites of co‐flowering species due to climate change.

A free Plain Language Summary can be found within the Supporting Information of this article.