bluuebunny/crossref_metadata_2025_split huggingface dataset:
Algorithm for Accumulating Part Mating Gaps to Evaluate Solid and Fluid Performances
Authors: Ni Jun , Liu Rui , Sun Yu 
Published: July 2020

Abstract
Part mating gaps need to be effectively adjusted during the assembly of products and greatly affect the working performance. This paper develops an algorithm to calculate the dimensional and aerodynamic indexes affected by part mating gaps. Mating gaps are expressed by displacements of one contact surface, and indexes are evaluated by displacements of key surface, when the surface is ready to compare with the other. A graph that denotes contacts as nodes and related paths through the physical domain as lines is proposed to express assembly sequences and hierarchies. A variable is defined to combine the time set with the displacement set. Boolean algebraic theorems are extended to derive a compact expression for the contact graph that supports the organization of accumulations at different surfaces with propagations through physical domains. Demonstrations of this method using three products exhibit the general applicability, and the application shows that the performance deviations of the centrifugal fan and axial turbine are apparent. In particular, the isentropic efficiency is good with a certain probability, despite turbines having mating gaps. The algorithm benefits both design and assembly: design can be performed through the fluid domain, which is affected by the mating gaps, and when the parts are being adjusted, the selected tolerance limit allows engineers to monitor key surfaces to ensure good aerodynamic performance.
A Statistical Design of Experiments Approach to Machine Learning Model Selection in Engineering Applications
Authors: Munger T. , Desa S. 
Published: July 2020

Abstract
An important but insufficiently addressed issue for machine learning in engineering applications is the task of model selection for new problems. Existing approaches to model selection generally focus on optimizing the learning algorithm and associated hyperparameters. However, in real-world engineering applications, the parameters that are external to the learning algorithm, such as feature engineering, can also have a significant impact on the performance of the model. These external parameters do not fit into most existing approaches for model selection and are therefore often studied ad hoc or not at all. In this article, we develop a statistical design of experiment (DOEs) approach to model selection based on the use of the Taguchi method. The key idea is that we use orthogonal arrays to plan a set of build-and-test experiments to study the external parameters in combination with the learning algorithm. The use of orthogonal arrays maximizes the information learned from each experiment and, therefore, enables the experimental space to be explored extremely efficiently in comparison with grid or random search methods. We demonstrated the application of the statistical DOE approach to a real-world model selection problem involving predicting service request escalation. Statistical DOE significantly reduced the number of experiments necessary to fully explore the external parameters for this problem and was able to successfully optimize the model with respect to the objective function of minimizing total cost in addition to the standard evaluation metrics such as accuracy, f-measure, and g-mean.
Contrasting prenatal nutrition and environmental exposures in association with birth weight and cognitive function in children at 7 years
Authors: Gennings Chris , Wolk Alicja , Hakansson Niclas , Lindh Christian , Bornehag Carl-Gustaf 
Published: July 2020

BackgroundGood nutrition is essential for individual health, a notion that is particularly true during pregnancy. We have used a nutrition index that measures the adequacy of one’s diet relative to the unique nutritional needs of individuals due to, for example, their activity level, dietary restrictions, lifestyle and body size. The use of this personalised metric of dietary nutritiousness in the analysis of prenatal environmental exposures and developmental outcomes permits testing for potential mitigating effects of good nutrition. We also provide an analysis strategy for investigating the balance in beneficial food sources which are also the source of environmental toxicants.MethodsA holistic measure of nutrition,My Nutrition Index(MNI), measures the nutrient quality (ie, ‘nutritiousness’) of a specified daily diet. MNI is calculated based on quantification of dozens of macronutrients and micronutrients that are specific to an individual’s nutritional needs by incorporating dietary restrictions, subject characteristics, activity level and health behaviours. The Swedish Environmental, Longitudinal, Mother and child, Asthma and allergy Study is a Swedish pregnancy cohort, with prenatal endocrine disrupting chemicals (EDCs) exposure and dietary data available. This makes it possible to test for the potential mitigating effects of good nutrition on health and development effects in offspring from EDCs.ResultsUsing prenatal Food Frequency Questionnaire data to construct an individual’s MNI, the index was significantly and positively associated with important metabolic outcome (as measured by birth weight) and cognitive function at age 7 years (as measured by WISC IQ) in children when adjusted for covariates and prenatal concentrations of an EDC. In a stratified analysis of ‘low’ and ‘high’ fish consumption, a potential source of perfluoro-octanesulfonic acid (PFOS), the association between PFOS and birth weight was diminished in the high consumption group compared with the low consumption group.ConclusionsThus, MNI is evidently a metric of the general nutritiousness of daily diets and is useful in environmental health studies in representing the impact of good nutrition, even during pregnancy.
Money-oriented risk-takers or deliberate decision-makers: a cross-sectional survey study of participants in controlled human infection trials
Authors: Hoogerwerf Marie-Astrid , de Vries Martine , Roestenberg Meta 
Published: July 2020

ObjectiveTo quantitatively investigate the motivations, decision-making and experience of participants in controlled human infection (CHI) studies.DesignCross-sectional descriptive survey study.SettingPrevious participants of CHI studies at the Leiden Controlled Human Infection Center, control group of students from Leiden University.Participants61 previous participants and 156 controls.MeasurementsRanking of motivational and decisional factors, risk propensity score and multiple-choice questions on experience of trial participation and ethical aspects of CHI studies.ResultsMotivating factors for participants were contributing to science (81%), contributing to research that may benefit developing countries (72%) and the financial compensation (63%). For 51% of participants, a reason other than financial compensation was the most important motivational factor. Participants considered trust in the study team (70%), time investment (63%), severity of symptoms (54%), chance of developing symptoms (54%) and whether it is an easy way to make money (54%) in their decision to participate. Most CHI participants (84%) were proud of their participation, would advise others to participate (89%) and would participate in a similar trial again (85%). CHI participants had a higher risk propensity score than students (estimated difference 0.9, p<0.001).ConclusionAlthough financial compensation is important, the motivations for participants in a CHI study are diverse and participants make a balanced appraisal of risks and burden before participating.
Pathways to psychiatric care and factors associated with delayed help-seeking among patients with mental illness in Northern Ethiopia: a cross-sectional study
Authors: Teshager Senait , Kerebih Habtamu , Hailesilassie Hailemariam , Abera Mubarek 
Published: July 2020

ObjectiveThis study aimed to assess pathways to psychiatric care and factors associated with delayed help-seeking among patients with mental illness in Northern Ethiopia using the WHO Pathway Study Encounter Form.DesignA cross-sectional study design was used.SettingData were collected using face-to-face interview from patients with various diagnoses of mental illness attending outpatient treatment at Ayder Comprehensive Specialized Hospital in Mekelle City, Tigray, Northern Ethiopia.ParticipantsParticipants who came to attend outpatient treatment during the study period were included in the study using consecutive sampling technique.Outcome measuresPathways to psychiatric care, delayed psychiatric treatment and factors affecting delayed psychiatric treatment.ResultsThe median duration from problem onset to contact with first care provider was 4 weeks, whereas contact with modern psychiatric services was 52.0 weeks. Study participants who were single (adjusted OR (AOR)=2.91, 95% CI 1.19 to 7.11), divorced (AOR=3.73, 95% CI 1.33 to 10.49) and who perceived mental illness as shameful (AOR=3.29, 95% CI 1.15 to 9.41) had delayed treatment-seeking behaviour, whereas participants with no history of substance use (AOR=0.43, 95% CI 0.20 to 0.92) were less likely to have delayed treatment-seeking behaviour.ConclusionsThere is significant delay in seeking modern psychiatric treatment. Religious healers were the first source of help for mental illness. Majority of the respondents described that mental illness was due to supernatural causes. Stigma and lack of awareness about where treatment is available were barriers to seeking appropriate care.
How are social determinants of health represented in German medical education?: a qualitative content analysis of key-curricular documents
Authors: Hommes Franziska , Drees Simon , Geffert Karin , von Philipsborn Peter , Stratil Jan M 
Published: July 2020

ObjectiveThe WHO Commission on Social Determinants of Health (SDH) has called for a health workforce trained in recognising, understanding and acting on the SDH. However, little is known about how current medical education prepares graduates for this challenge. This study analyses the extent to which the German medical education incorporates content on SDH.DesignFollowing a published protocol, in 2018, we conducted a qualitative and quantitative content analysis of three key document groups, defining and guiding what medical schools are expected to teach and what medical students are expected to know when graduating in Germany. We developed the coding system in a mixed inductive and deductive approach based on key WHO documents.SettingMedical schools and the medical education system in Germany.ResultsImportant gaps exist in the representation of SDH in medical education in Germany. Between 3% and 27% of the analysed document-elements made reference to SDH and only 0%–3% of those document elements made explicit references to SDH. While some aspects were covered widely (eg, topics of occupational health, early childhood development and hygiene), other topics such as health inequalities or determinants outside of the healthcare system were not or hardly represented.ConclusionsA stronger and more explicit representation of SDH in German medical education is needed to prepare the new health workforce for current and future challenges in our globalised world and for medical schools to be socially accountable.
Women’s experiences of self-administration of misoprostol at home as part of early medical abortion: a qualitative evaluation
Authors: Harden Jeni , Ancian Julie , Cameron Sharon , Boydell Nicola 
Published: July 2020

BackgroundBetween 2017 and 2019, legislation was introduced in the UK that approved the home as a place for self-administration of misoprostol for early medical abortion. While research has shown that early medical abortion at home is as safe as in a clinical setting, women’s experiences in the UK in the light of this change have not yet been investigated. This qualitative research explored the experiences of women in one region of Scotland, UK who accessed early medical abortion with home self-administration of misoprostol.MethodsQualitative interviews were conducted with 20 women who had recently undergone early medical abortion (≤69 days' gestation) with home self-administration of misoprostol. The data were analysed thematically using an approach informed by the Framework analytic approach.ResultsWomen appreciated the flexibility that home administration of misoprostol offered, including the opportunity to control the timing of the abortion. This was particularly important for women who sought not to disclose the abortion to others. Most women valued being in the comfort and privacy of the home when preparing for self-administration, although a small number highlighted some concerns about being at home. Most women reported that self-administration of misoprostol was straightforward; however, some expressed concerns around assessing whether their experiences were ‘normal’.ConclusionsWomen welcomed the opportunity for home self-administration of misoprostol. To further improve women’s early medical abortion experience we suggest that the legislation be amended so that women can self-administer in an appropriate non-clinical setting, not just their home.
Polymorphism in GSTM1 and GSTT1 genes influence DNA damage in personnel occupationally exposed to volatile anaesthetics (VA), from Peshawar, Pakistan
Authors: Khisroon Muhammad , Humayun Maleeha , Khan Ajmal , Farooqi Javeed , Humayun  , khan Jamal 
Published: July 2020

ObjectivesThe objective of this study was to assess the influence of antioxidant gene GSTM1 and GSTT1 on DNA damage in personnel occupationally exposed to volatile anaesthetics (VA).MethodsThe study groups were composed of 50 exposed subjects (anaesthesia workers) and 49 controls. Blood samples were collected from both subjects. DNA damage was analysed through the comet assay technique. Biomarker genes GSTM1 and GSTT1 were inspected through PCR technique for polymorphism.ResultsThe comet assay technique showed that the Total Comet Score (TCS) in exposed subjects was significantly higher (p=0.0001) than the control. Age and smoking had significant effects on TCS in the study groups (p<0.05). Duration of occupational exposure had significant positive correlation (r=0.755, p<0.001) with DNA damage. The null polymorphism in GSTM1 and GSTT1 gene showed a significant effect (p<0.001 and p<0.000) on the DNA damage.ConclusionsThe polymorphism in GSTM1 and GSTT1 gene significantly damage DNA in personnel occupationally exposed to VA.
Retrospective case series to identify the most common conditions seen ‘out‐of‐hours’ by first‐opinion equine veterinary practitioners
Authors: Bowden Adelle , Boynova Polina , Brennan Marnie Louise , England Gary C W , Mair Tim S , Furness Wendy A , Freeman Sarah L , Burford John H 
Published: July 2020

BackgroundThe study aim was to describe conditions seen ‘out‐of‐hours’ in equine practice.MethodsThis was a retrospective case series of first opinion ‘out‐of‐hours’ cases seen at two equine practices between 2011 and 2013. Data were retrieved on case presentation, diagnostic testing, treatment administered and outcome, and diseases categorised using a systems‐based coding system. A hierarchical logistic regression, formulated using a generalised linear model, was used to identify clinical variables associated with a binary outcome of ‘critical’ cases (required hospitalisation or euthanasia or died).ResultsData from 2602 cases were analysed. The most common reasons for ‘out‐of‐hours’ visits were colic (35 per cent, n=923/2620), wounds (20 per cent, n=511/2620) and lameness (11 per cent, n=288/2,620). The majority of cases required a single treatment (58 per cent, n=1475/2550), 26 per cent (n=656/2550) needed multiple treatments and 13 per cent (n=339/2550) were euthanased. Eighteen per cent (n=480/2602) of cases had a critical outcome. Increased heart rate at primary presentation was associated with critical outcome in both practices (Practice A, OR 1.07 (95 per cent confidence interval 1.06 to 1.09), Practice B OR 1.08 (95 per cent confidence interval 1.07 to 1.09; p<0.001)).ConclusionColic, wounds and lameness were the most common equine ‘out‐of‐hours’ conditions; 13 per cent of cases were euthanased. Further research is required into out‐of‐hours euthanasia decision‐making.
Providing information about triclabendazole resistance status influences farmers to change liver fluke control practices
Authors: Coyne Lucy Alice , Bellet Camille , Latham Sophia M , Williams Diana 
Published: July 2020

BackgroundReports of disease and production losses associated with Fasciola hepatica, the common liver fluke, have increased in recent years. Resistance to triclabendazole, one of the principal veterinary medicines used to prevent losses, has been reported and is now considered widespread in fluke endemic regions of the UK.MethodsThirteen farmers participated in a trial in 2013 and the triclabendazole resistance status was obtained for each farm. Based on these results, a knowledge exchange programme on fluke control was delivered to nearly 100 farmers in the region. In this follow‐up study, 11 farmers involved in the original trial, participated in semistructured in‐depth qualitative interviews in July 2017.ResultsOverall, participants identified benefits from participating in the 2013 trial, gaining information about triclabendazole resistance on their farms and knowledge about fluke control. The information on their farm's resistance status was a driver for changing their liver fluke control programmes. Factors such as habitual and repetitive behaviours, grazing restrictions due to agri‐environmental schemes, economic pressures and climate change were identified that could impede or prevent the adoption of new control strategies.ConclusionsThe study highlights the significance of resistance to triclabendazole and the impact of knowledge exchange programmes in changing liver fluke control practices.
Capping dewatered oil sands fluid fine tailings with salvaged reclamation soils at varying depths to grow woody plants
Authors: Lalonde Ryan S. , Pinno Bradley D. , MacKenzie M. Derek , Utting Nicholas 
Published: July 2020

Managing fluid fine tailings (FFT) present a major cause of industrial and environmental concerns in oil sands surface mining production. A potential management solution is to dewater and cap the FFT solids for use in land reclamation. A 16 wk greenhouse study was conducted to assess whether FFT centrifuge cake with caps of various reclamation soil mixes (forest floor mineral mix, peat mineral mix, and a mixture of both) and depths (0, 5, 10, and 20 cm) would support growth of trembling aspen (Populus tremuloides — native broadleaf tree) and beaked willow (Salix bebbiana — native broadleaf shrub). Beaked willow had a much greater survival rate (100%) when grown directly in FFT cake compared with trembling aspen (16.7%). Plants grown directly in FFT cake were negatively impacted by high water content, low nitrate supply rates, and high metal concentrations with beaked willow seedlings having 10 times higher foliar concentrations of Al, Cr, and Ti compared with any other treatments. Adding soil caps substantially increased aboveground biomass for both species, but differences among soil cap types and depths did not have as significant of an effect on plant growth. Results from this study show that capping FFT substantially improves woody plant growth, and S. bebbiana and P. tremuloides are potentially suitable species for tailings reclamation.
Black hole evaporation in Hořava–Lifshitz gravity
Authors: Xu Hao , Ong Yen Chin 
Published: July 2020

AbstractHořava–Lifshitz (HL) gravity was formulated in hope of solving the non-renormalization problem in Einstein gravity and the ghost problem in higher derivative gravity theories by violating Lorentz invariance. In this work we consider the spherically symmetric neutral AdS black hole evaporation process in HL gravity in various spacetime dimensions d, and with detailed balance violation parameter $$0\leqslant \epsilon ^2\leqslant 1$$0⩽ϵ2⩽1. We find that the lifetime of the black holes under Hawking evaporation is dimensional dependent, with $$d=4,5$$d=4,5 behave differently from $$d\geqslant 6$$d⩾6. For the case of $$\epsilon =0$$ϵ=0, in $$d=4,5$$d=4,5, the black hole admits zero temperature state, and the lifetime of the black hole is always infinite. This phenomenon obeys the third law of black hole thermodynamics, and implies that the black holes become an effective remnant towards the end of the evaporation. As $$d\geqslant 6$$d⩾6, however, the lifetime of black hole does not diverge with any initial black hole mass, and it is bounded by a time of the order of $$\ell ^{d-1}$$ℓd-1, similar to the case of Schwarzschild-AdS in Einstein gravity (which corresponds to $$\epsilon ^2=1$$ϵ2=1), though for the latter this holds for all $$d\geqslant 4$$d⩾4. The case of $$0<\epsilon ^2<1$$0<ϵ2<1 is also qualitatively similar with $$\epsilon =0$$ϵ=0.
Upcoming SIGWEB supported conferences
Authors: Roßner Daniel 
Published: July 2020

The Special Interest Group on Hypertext and the Web, SIGWEB was created in 1989 to support the community participating in the annual ACM Hypertext Conference. Now in its third decade, SIGWEB has grown considerably and now sponsors seven annual conferences of different sizes and covering a wide range of topics. SIGWEB supports several specialized conferences, short courses, and workshops, as well as the Annual Hypertext Conference. SIGWEB sponsored conferences focus on timely topics in applied and computational hypertext and Web disciplines and provide a place for members and the entire applied Hypermedia and Web community to exchange ideas and to meet with and expand their network of colleagues. In this article, we provide a brief overview of SIGWEB sponsored conferences, in addition to events that are in cooperation with SIGWEB.
Due to the current Corona crisis, many event organizers opted for an online conference format. These conferences are marked accordingly.
An adaptive, utilization-based approach to schedule real-time tasks for ARM big.LITTLE architectures
Authors: Mascitti Agostino , Cucinotta Tommaso , Marinoni Mauro 
Published: July 2020

ARM big.LITTLE architectures are spreading more and more in the mobile world thanks to their power-saving capabilities due to the use of two ISA-compatible islands, one focusing on energy efficiency and the other one on computational power. This architecture makes the problem of energy-aware task scheduling particularly challenging, due to the number of variables to take into account and the need for having lightweight mechanisms that can be readily computed in an operating system kernel scheduler.
This paper presents a novel task scheduler for big.LITTLE platforms, combining the well-known Constant Bandwidth Server algorithm with a power-aware per-job migration policy. This achieves real-time adaptation of the CPU islands' frequencies based on the individual cores' overall utilization, as available in the scheduler thanks to the use of the resource reservation paradigm. Preliminary results obtained by simulations based on modifications to the open-source RTSim tool show that the proposed technique is able to achieve interesting performance/energy trade-offs.