bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Health Informatics Reporting System for Technology Illiterate Workforce Using Mobile Phone
Authors: Durrani Muhammad Imran Afzal , Qureshi Noman Sohaib , Ahmad Nadeem , Naz Tabbasum , Amelio Alessia 
Published: May 2019

Abstract
Background The reduction and control over neonatal, infant, and maternal mortality is a collective mission of the World Health Organization under United Nations.
Methods This article summarizes the automation of verbal autopsy reporting for neonatal, infant, and maternal mortality with primary focus on user-centered design for technologically illiterate workforce with minimum available resources. The diminution in neonatal, infant, and maternal deaths is not possible until grassroot level quality data are available for mortality. The estimated data are less effective for developing countries like Pakistan because it has heterogeneous demographic pockets with respect to mortality causes. The Neonatal, Infant, and Maternal Death E-surveillance System is a project in which a real-time reporting system is innovated that is useful in detecting the causes of mortality and effective in adopting appropriate countermeasure policies. In a pilot study, the system was implemented initially in nine districts of Punjab, Pakistan. The initial system was refined after getting detailed feedback from district management staff including Lady Health Workers and Lady Health Supervisors. The refined surveillance system was finally implemented in all 36 districts of Punjab, Pakistan.
Results The results exhibited 31% improvement in infant data collection and 6% improvement in maternal data collection regarding mortality.
Conclusion This research will be helpful in achieving the milestone of gathering real-time mortality data from grassroot level using user-centered design methodology.
On the stable estimation of flow geometry and wall shear stress from magnetic resonance images
Authors: Egger H , Teschner G 
Published: May 2019

Abstract
We consider the stable reconstruction of flow geometry and wall shear stress from measurements obtained by magnetic resonance imaging (MRI). As noted in a review article by Petersson, most approaches considered so far in the literature seem to not be satisfactory. We therefore propose a systematic reconstruction procedure that allows us to obtain stable estimates of flow geometry and wall shear stress and we are able to quantify the reconstruction errors in terms of bounds for the measurement errors under reasonable smoothness assumptions. A complete analysis of our approach is given in the framework of regularization methods. In addition, we briefly discuss the implementation of our method and we demonstrate its viability, accuracy, and regularizing properties for experimental data.
Calibration of Aircraft Airdata Systems Using Adaptive Filtering Algorithm
Authors: Mohamed Majeed , Joy Nidhin , Kumar Asok 
Published: May 2019

Abstract
This paper focuses on the calibration of aircraft airdata system to obtain online accurate Angle of Attack(AOA) and Angle of Sideslip (AOSS) from measured quantities contain error. For this purpose, an adaptive version of the extended Kalman filter (EKF) is employed to estimate accurately flight path trajectories of an aircraft. The investigations are made with flight simulated data with turbulence effects. Results are analyzed and found that adaptive EKF provides more accurate results over EKF.
A Piece-Wise Linearization PID Control of Aero-engine Software Defined Control System
Authors: Ji Xiaoxiang , Li Jianghong , Ren Jiao , Wu Yafeng 
Published: May 2019

Abstract
A scheme of piece-wise linearization PID control of aero-engine software defined control system based on wireless network is proposed in this paper. The characteristic of the system is that the PID controller is separated and distributed among the nodes of the wireless network, each node has the function of computing, memory and wireless communication, no core control unit in the system and the whole wireless network acts as a distributed PID controller. The linearization model and corresponding tuning parameters at different working points in flight envelope of the aero-engine are established offline using the memory resource of each node to make the node task parameters switch when the aero-engine working at different points. Finally, MATLAB/Simulink software tool is used to conduct the digital simulation analysis, the result shows that the proposed scheme achieves good dynamic and steady-state performance, and achieves good control effect.
Antlion Optimization for Bending of Arrow Honeycomb
Authors: Jiang Hengkun , Fang Houfei , Hou Yangqing , Wu Ke 
Published: May 2019

Abstract
In view of the single curved deformation characteristics of zero Poisson’s ratio (ZPR) honeycomb, Arrow honeycomb with ZPR is applied to the reflecting surface of the spatial parabolic cylinder antenna in this paper. First of all, the loading method for cylinder formation of honeycomb with ZPR is analysed. Then, Abaqus analysis, surface fitting and precision calculation are integrated into the objective function. Antlion Optimization (ALO) algorithm is used to optimize the RMS error of the deformed surface. The analysis results show that it is feasible to apply the honeycomb with ZPR to the reflector of cylindrical antenna, and the accuracy of deformed profile is improved by 45.5% through the ALO algorithm, which proves the effectiveness and efficiency of the ALO algorithm to solve the problem with unknown initial value. The research results are certainly significant for the optimization design of honeycomb with ZPR and the application of ALO algorithm.
Approach and Application of Semi-Blind Source Separation for Aero-Engine Vibration Signals Using ICA-R
Authors: Shi Lujie , Wang Yankai , Liao Mingfu , Jiang Yunfan 
Published: May 2019

Abstract
In this paper, the approach and application of semi-blind source separation (SBSS) in aero-engine vibration signal is studied. Firstly, the features of aero-engine vibration signal and difficulties for blind source separation (BSS) are summarized, and the SBSS incorporated the available prior knowledge is match to the goal of signal processing. Then, the ICA with reference (ICA-R) algorithm based on classical FastICA is introduced, with Newton iteration and gradient descent iteration approach to obtain optimal solution. The unique parameters in ICA-R for aero-engine vibration signal are also provided. Finally, the efficacy and the accuracy of the ICA-R algorithm are verified by numerical simulations and real engine vibration signals. The approach of SBSS in this paper perfectly suited to handle aero-engine vibration source separation and it lead to efficient implementation in fault diagnosis.
Study of the Possibility of Using the Mechanics of Inflatable Braking Devices to Remove the Spacecraft
Authors: Koryanov Vsevolod V. , Toporkov Alexey G. , Kazakovtsev Victor P. , Nedogarok Anton A. 
Published: May 2019

Abstract
The problem of accumulation of space debris in near-Earth space is very relevant now. More than 15,000 debris have been recorded, and this represents a danger for current and future missions to space. A solution to this issue is to remove these spacecrafts from orbit. One of the ways to do it is to use inflatable device. These inflatable braking device can be installed on the landing vehicles on Earth, before their launch, or after they have been labelled as space debris. Studies have already been conducted about inflatable device. Using inflatable device instead of rigid device has advantages, such as a small mass and a great compacity, which is convenient to respect the required launching volume. This paper is dedicated to use of various inflatable brake devices and they are compared with each other.
Numerical Study of Fillet Surface Effect on the Ducted Performance Using OpenFOAM
Authors: Bahatmaka Aldias , kim Dong Joon , Pranggono Hadi 
Published: May 2019

Abstract
In the present study, the effect of fillet surface on the performance of the ducted propeller using Reynolds-Average Navier Stokes (RANS) method is applied. The numerical simulations compare the propeller model with fillet on the surface and without fillet. OpenFOAM is used to simulate the performances and solve the problems in the open water propeller simulation. MRF approach is applied for this simulation. Kaplan model with the 19A nozzle is investigated by comparing the results with experimental data. The effect of fillet surface on the ducted propeller are presented and discussed in this study.
Research on the Application of Supportability Analysis Technology in Ejection Seat
Authors: Wang Wensheng , Jin Liying , Liu Jing , Sun Xi 
Published: May 2019

Abstract
Ejection seat is a complex system that can be both one-time-used and continuous-used, in which the supportability analysis technology plays an essential role. Supportability analysis includes Reliability-Centered Maintenance Analysis (RCMA, for short), Corrective Maintenance Analysis, Level of Repair Analysis (LORA, for short), Operation and Maintenance Task Analysis (O&MTA, for short), Support Equipment Requirement Analysis and Spare Parts Requirement Analysis (shortened as “6A”). Firstly, in this paper, the concept of “6A” technology and their relationship are introduced. The general “6A” working process of a certain type of ejection seat is then studied. In the end, the “6A” work is carried out on a certain type of ejection seat according to the analytical steps and requirements to “6A”.
The Effect of Sealing Ring Gap on Hydrogen Peroxide Electric Pump
Authors: Yuanbo He , Hongliang Pan , Yang Liu , Fei Qin , Bin He 
Published: May 2019

Abstract
Chained decomposition will take place in terms of overheat of high concentration hydrogen peroxide, which will further cause explosion, in the electric pump pressurized liquid propellant rocket engine, which takes hydrogen peroxide of high concentration as oxidizing agent, the design of oxidant pump should consider safety factor for temperature rising of hydrogen peroxide and the influence of pump efficiency on quality control of motor system simultaneously. It’s very important to know the effect of sealing ring gap at the bottom of impeller on temperature rising of bearing chamber and pump efficiency. So, this paper firstly establishes mathematical modal about the effect of sealing ring gap on temperature rising of bearing chamber and pump efficiency loss, to gain influencing curve, and then it analyzes parameters of cooling flow and mechanism of temperature rising, and give reasonable gap values, which take both safety and efficiency into account. Finally, 3D simulation calculation is carried out through pumplinx to verify the accuracy of this influence model.
Real Men Don’t Cry: Skill Expressing Discrete Emotions Differentially Predicts Cardiovascular Disease Risk in Men and Women
Authors: Thompson Laura M , Tuck Natalie L , Pressman Sarah D , Consedine Nathan S 
Published: May 2019

Abstract

Background
Expressing emotions effectively is central to social functioning and has links to health and cardiovascular disease (CVD) risk. Previous work has linked the ability to smile to lower CVD risk in men but has not studied other expressions or considered the context of these skills.

Purpose
To test whether the ability to express fear, anger, sadness, happiness, and disgust cross-sectionally predict CVD risk in both genders and whether links are moderated by the ability to decode others’ emotional signals.

Methods
A community sample of 125 men and women (30–75 years) provided trait emotion data before a laboratory visit where blood was drawn and performance-based assessments of the ability to signal and decode emotions were administered. Expressive accuracy was scored using FaceReader software. Projected CVD risk was calculated using Framingham, a New Zealand (NZ) specific, and Atherosclerosis CVD (ASCVD) risk algorithms.

Results
Accuracy expressing happiness predicted lower projected risk, whereas greater accuracy expressing fear and sadness predicted higher risk. Gender frequently moderated these links; greater accuracy expressing happiness predicted lower risk in men but not women. Conversely, greater accuracy expressing fear predicted higher risk in men, whereas greater accuracy expressing sadness predicted lower risk in women but, again, higher risk in men. The ability to accurately decode others’ emotions moderated some links.

Conclusions
The ability to signal emotion has complex links to health parameters. The ability to flexibly regulate expressions in accordance with gender norms may be one useful way of thinking about adaptive expressive regulation.
Natural history of spinal cord arteriovenous shunts: an observational study
Authors: Yu Jia-Xing , Hong Tao , Krings Timo , He Chuan , Ye Ming , Sun Li-Yong , Zhai Xiao-Dong , Xiang Si-Shi , Ma Yong-Jie , Bian Li-Song , Ren Jian , Tao Peng-Yu , Li Jing-Wei , Yang Fan , Li Gui-Lin , Ling Feng , Zhang Hong-Qi 
Published: May 2019

AbstractThe natural history of intradural spinal cord arteriovenous shunts is unknown. We performed an observational study in a consecutive patient cohort with symptomatic intradural spinal cord arteriovenous shunts who were admitted to three institutes to investigate the clinical course of this complex disease, which would provide valuable evidence to inform clinical decision-making. The clinical course of patients with symptomatic intradural spinal cord arteriovenous shunts from initial presentation to occurrence of clinical deterioration, initiation of treatment, or last follow-up was analysed. Patients with at least 1 month of observation were included in this study. Clinical onset and deterioration patterns were divided into acute and gradual. Annual and cumulative rates of clinical deterioration as well as their risk factors were analysed using Kaplan-Meier life table analysis and Cox proportional hazards model. To assess risks and benefits of treatment, post-treatment clinical courses were further assessed. Four hundred and sixty-six patients with a mean observational period of 36.9 ± 58.8 months were included; 56.7% of patients presented with acute onset, of whom 77.3% experienced spontaneous recovery. Age of onset older than 28 years, initial modified Aminoff and Logue scale of >3, mid-thoracic lesions and non-ventral lesions were independent predictors of failure for spontaneous recovery. The annual risk of general, acute and gradual clinical deterioration after onset was 30.7%, 9.9% and 17.7%, respectively. Risk of deterioration was highest in the early period after initial onset. Acute onset was the only independent risk factor [hazard ratio 1.957 (95% confidence interval, CI 1.324–2.894); P = 0.0008] of acute deterioration and gradual onset was the strongest predictor [hazard ratio 2.350 (95% CI 1.711–3.229); P < 0.0001] of the gradual deterioration among all the stratifying factors. After invasive treatment, complete obliteration was achieved in 37.9% of patients (138 of 364) and improved or stable clinical status was noted in 80.8% of patients. Forty-two patients (11.5%) experienced permanent complications. Overall post-treatment deterioration rate was 8.4%/year, and 5.3%/year if permanent complications were excluded. The natural history of symptomatic spinal cord arteriovenous shunts is poor, especially in the early period after onset, and early intervention is thus recommended. Initial onset pattern significantly affects the natural history of the lesion, which prompts a differentiated treatment strategy.
Dendritic Spine Density and Dynamics of Layer 5 Pyramidal Neurons of the Primary Motor Cortex Are Elevated With Aging
Authors: Davidson A M , Mejía-Gómez H , Jacobowitz M , Mostany R 
Published: May 2019

AbstractIt is well established that motor impairment often occurs alongside healthy aging, leading to problems with fine motor skills and coordination. Although previously thought to be caused by neuronal death accumulating across the lifespan, it is now believed that the source of this impairment instead stems from more subtle changes in neural connectivity. The dendritic spine is a prime target for exploration of this problem because it is the postsynaptic partner of most excitatory synapses received by the pyramidal neuron, a cortical cell that carries much of the information processing load in the cerebral cortex. We repeatedly imaged the same dendrites in young adult and aged mouse motor cortex over the course of 1 month to look for differences in the baseline state of the dendritic spine population. These experiments reveal increased dendritic spine density, without obvious changes in spine clustering, occurring at the aged dendrite. Additionally, aged dendrites exhibit elevated spine turnover and stabilization alongside decreased long-term spine survival. These results suggest that at baseline the aged motor cortex may exist in a perpetual state of relative instability and attempts at compensation. This phenotype of aging may provide clues for future targets of aging-related motor impairment remediation.
The Effect of Changing Financial Incentives on Repartnering*
Authors: Fisher Hayley , Zhu Anna 
Published: May 2019

AbstractThis article examines how a reduction in the financial resources available to lone parents affects repartnering. We exploit an Australian natural experiment that reduced the financial resources available to a subset of separating parents. Using biweekly administrative data capturing separations occurring among low- and middle- income couples, we show that the policy reform significantly increased the speed of repartnering for affected separating mothers. The results demonstrate that one way that lone mothers respond to a reduction in financial resources available at the time of relationship breakdown is by repartnering more quickly.
Who is in and who is out? A qualitative analysis of stakeholder participation in priority setting for health in three districts in Uganda
Authors: Razavi S Donya , Kapiriri Lydia , Abelson Julia , Wilson Michael 
Published: May 2019

Abstract
Stakeholder participation is relevant in strengthening priority setting processes for health worldwide, since it allows for inclusion of alternative perspectives and values that can enhance the fairness, legitimacy and acceptability of decisions. Low-income countries operating within decentralized systems recognize the role played by sub-national administrative levels (such as districts) in healthcare priority setting. In Uganda, decentralization is a vehicle for facilitating stakeholder participation. Our objective was to examine district-level decision-makers’ perspectives on the participation of different stakeholders, including challenges related to their participation. We further sought to understand the leverages that allow these stakeholders to influence priority setting processes. We used an interpretive description methodology involving qualitative interviews. A total of 27 district-level decision-makers from three districts in Uganda were interviewed. Respondents identified the following stakeholder groups: politicians, technical experts, donors, non-governmental organizations (NGO)/civil society organizations (CSO), cultural and traditional leaders, and the public. Politicians, technical experts and donors are the principal contributors to district-level priority setting and the public is largely excluded. The main leverages for politicians were control over the district budget and support of their electorate. Expertise was a cross-cutting leverage for technical experts, donors and NGO/CSOs, while financial and technical resources were leverages for donors and NGO/CSOs. Cultural and traditional leaders’ leverages were cultural knowledge and influence over their followers. The public’s leverage was indirect and exerted through electoral power. Respondents made no mention of participation for vulnerable groups. The public, particularly vulnerable groups, are left out of the priority setting process for health at the district. Conflicting priorities, interests and values are the main challenges facing stakeholders engaged in district-level priority setting. Our findings have important implications for understanding how different stakeholder groups shape the prioritization process and whether representation can be an effective mechanism for participation in health-system priority setting.
Entrepreneurial dynamism and the built environment in the evolution of university entrepreneurial ecosystems
Authors: Johnson David , Bock Adam J , George Gerard 
Published: May 2019

Abstract
University-centered entrepreneurial ecosystems (UCEEs) are complex webs of entrepreneurs, researchers, institutional support structures, and the built environment. We study the relationship between the built environment and the dynamism of the behavior of ecosystem agents in the evolution of UCEEs. Drawing upon data from interviews with ecosystem agents, as well as documents associated with the planning and development of purpose-built facilities (the built environment), we show how planned ecosystem evolution strategies differ from realized strategies. In particular, we develop a model of emergent response mechanisms to ecosystem dynamism and munificence, which include coping, learning, and adapting. We discuss UCEE evolution within a connectionist framework to better address the dynamic interaction of agents, institutions, and the environment.
Emergence of plasmid-mediated oxazolidinone resistance gene poxtA from CC17 Enterococcus faecium of pig origin
Authors: Huang Jinhu , Wang Mengli , Gao Yi , Chen Li , Wang Liping 
Published: May 2019

AbstractObjectivesTo characterize the oxazolidinone resistance gene poxtA on broad-host-range Inc18 plasmids from CC17 Enterococcus faecium of pig origin.MethodsOxazolidinone-resistant E. faecium isolates were screened for the presence of poxtA. The poxtA-carrying isolates were characterized by antimicrobial susceptibility testing, conjugation, S1-PFGE and hybridization. The poxtA-carrying plasmids were completely sequenced and their instability was verified.ResultsTwo individual CC17 E. faecium strains were positive for poxtA. S1-PFGE and hybridization revealed the presence of a poxtA-carrying plasmid of ∼62 kb in both WZ27-2 and the transconjugant, while poxtA-carrying plasmids of different sizes were observed in QF25-1 and the transconjugant. The two poxtA-carrying plasmids, pC25-1 and pC27-2, belonged to the broad-host-range plasmids of the Inc18 family and carried dfrG, aadE, Δsat4, aph(3′)-III, erm(B), tet(M), tet(L) and fexB. Plasmid pC27-2 was virtually identical to pC25-1, with minor differences. The calculated transfer frequency was ∼0.87 × 10−8 and ∼1.03 × 10−7 per recipient to plasmids pC25-1 and pC27-2, respectively. Instability assays of the region with four adjacent IS1216Es, which forms three IS1216E translocatable units, revealed the formation of a series of mosaic circular intermediates.ConclusionsWe report the emergence of the plasmid-mediated oxazolidinone resistance gene poxtA in E. faecium from different farms in China. Comparison of the poxtA genetic context suggests that IS1216E elements play an important role in the dissemination of poxtA. The co-occurrence of poxtA with other antimicrobial and heavy metal resistance genes on the broad-host-range plasmids of the Inc18 family may lead to the co-selection of poxtA, contributing to its persistence and accelerating its dissemination.