bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research on netizens’ emotion evolution in emergency based on machine learning
Authors: Ren Zhongjie , Zhang Peng , Liu Jing , Lan Yuexin 
Published: December 2019

Abstract
[Purpose/significance] By analyzing the emotional evolution of Weibo users after emergencies, we can find out the law and potential risks of public opinion evolution and provide instruction for the government to control and guide network public opinion. [Method/process] We proposed an analysis model of public opinion evolution based on Emotional Analysis and GBRT. With the help of Python, a web crawler was developed to collect Weibo comments. After that, a Naive Bayesian Classifier was used for emotional analysis. According to public emotion and the number of comments, we divided the evolution process into fever period, persistence period, incubation period and extinction period. Statistical and visualization methods were used to study the evolution characteristics of word cloud, emotional tendency and age groups. Finally, correlation analysis and GBRT were used to predict each individual’s emotions. [Results/conclusion] Taking the dangerous chemical explosion accident in Tianjin as an example, we can validate our model. Results shows that the model can reasonably divide the evolutionary stages, find out the law of public opinion evolution in different stages, and accurately predict users’ emotional tendency.
Evaluation on intensive use of urban land based on PSR model taking Henan Province as an example
Authors: Zhang Hongmin , Lu Chunyang , Yang Kaidong , Duan Linyun 
Published: December 2019

Abstract
This paper evaluates the level of urban land intensive use in Henan Province and analyzes the influence of different indexes on urban land intensive use in Henan Province. PSR model was adopted. The conclusions are as follows: (1) the intensive use level of urban land in Henan Province gradually increased from 2008 to 2016, but it was still in the stage of overuse, only in 2010 reached a moderate level of utilization; (2) the intensive use level of urban land in Henan Province is not high. Population is one of the main factors restricting the intensive use level of urban land in Henan Province; (3) the government of Henan Province should comprehensively consider the actual situation of Henan Province, increase the intensity of intensive use of urban land, and formulate relevant policies to improve the level of intensive use of urban land in Henan Province.
Adaptive emergency control system with an algorithm for rapid assessment of sustainability united energy system
Authors: Popov Maxim G , Lu Zhiyu 
Published: December 2019

Abstract
In the present study described the methodology for determination of sustainable modes of long equivalent of the interconnected power systems of various structures with simplified representation of excitation controllers of generators. According to the results of numerous studies, the criterion of oscillatory disturbance of static stability based on the control of the partial derivative ∂AN
/∂δ is formulated. To confirm the formulated criterion of violation of the static vibrational stability performed quantitative mapping of polynomial coefficients of haracteristics equations and additional applications of the matrix equations is redundant points of the equivalent circuit of the Electrical Power Systems (EPS) obtained under the criterion Hurwitz. Quantitative comparison and qualitative analysis of the nature of the change in the roots of the characteristic equation and the Hurwitz determinants confirm that the transition across the boundary of the stability region, found by the formulated criterion on the basis of the control of the partial derivative ∂AN
/∂δ taking into account the proposed simplified model of generators at the constant excitation voltage Uf
= const, is accompanied by the appearance of reciprocal values of the Hurwitz determinants. Taking into account the generalizations and conclusions obtained, a modified method of studying the static oscillatory stability of the EPS is proposed. The efficiency of the developed algorithm for determining the boundary of the region of potentially stable regimes is estimated. It is shown that the proposed method has the best performance indicators and can reduce the computational cost.
Design and implementation of flight test parameter calibration data management system
Authors: Bai Xue , Tang Ning , Li Wei 
Published: December 2019

Abstract
Given the shortcomings of current flight test calibration data management mode, in order to improve the calibration data management technology, based on user requirements, a test flight parameter calibration data management system with multiple functional modules was built under Visual C# and SQL Server platform. The C919 and HO300-903 flight test parameter calibration data was used for system function test. The efficiency of the system was tested with another sample of calibration data. The results show that the system is scientific and effective compared to the traditional file-based mode calibration data management method. The efficiency is increased by at least 2 times. The design of the system enhances the ability to calibrate data management techniques and reserve for calibration data mining for flight test sensors.
Expert strategic management systems in precision farming
Authors: Mikhaylenko Ilya M. , Timoshin Valery N. 
Published: December 2019

Abstract
Evaluating the modern market of the Internet of things, one should consider equipment connected into a single network, solutions, applications along the entire chain of product creation, including the end user. In this paper, such a binding is based on cloud information technologies. Through these technologies, the intellectualization of agrotechnology management is implemented through the creation of expert management decision support systems (DSS). The aim of the work is to consider the methodology for constructing DSS of strategic management in precision farming systems, where this type of management has not been implemented to date. To this kind of management, the task of forming strategies for the application of mineral fertilizers and ameliorants of prolonged action for all the years of various types of crop rotations is included. To solve the problem, an algorithm for the formation of optimal strategies for the application of mineral fertilizers and ameliorants, which is implemented in an analytical automated control system of agricultural technologies, through which a knowledge base (KB) is transmitted from the cloud system to local DSS, is substantiated. To select the best option from the knowledge base, the pattern recognition method is used. The technique was tested on arbitrary initial conditions of local systems, including extreme combinations of initial conditions. Based on the analysis of the loss of optimality associated with the discrepancy of the initial conditions on the local DSS and the KB, a method for controlling the formation of the BR, aimed at reducing these losses, is substantiated.
Financial deepening, inclusive finance and economic growth: analysis based on endogenous growth theory
Authors: He Jun , Zhang Yue , Zheng Datang , Wan Hongyan 
Published: December 2019

Abstract
This article studies the relationship between financial development and economic growth from the perspectives of financial deepening and inclusive finance. The theoretical research expands the financial endogenous economic growth model, constructs the Hamilton function, using the first-order optimization condition to obtain explicit relationship between economic growth and financial development under balanced path. Theoretical research shows that financial deepening and inclusive finance are significant and stable in promoting economic growth.
Simulation test of driving assistance system based on virtual scene
Authors: Meng Xing , Gan Haiyun , Yan Ying 
Published: December 2019

Abstract
Assisted driving technology has received increasing attention. In order to verify the function of the assisted driving technology, this paper takes the automatic emergency braking system as an example and uses CarMaker simulation software to construct a standardized test scenario. Build a vehicle model and add sensors to detect the environment around the vehicle. Set up the Simulink control model. Use the PID control to brake the vehicle. The simulation test of the automatic emergency braking system was completed and the dynamic characteristics of the test vehicle were analyzed. Finally, through simulation experiments, it is verified that the simulation test can achieve extremely dangerous working conditions and reduce the possibility of accidents. Simulation tests can improve the efficiency of the test, and can repeat the test multiple times, reducing the cost of testing.
Epidemiology of Cholera in Bangladesh: Findings From Nationwide Hospital-based Surveillance, 2014–2018
Authors: Khan Ashraful Islam , Rashid Md Mahbubur , Islam Md Taufiqul , Afrad Mokibul Hassan , Salimuzzaman M , Hegde Sonia Tara , Zion Md Mazharul I , Khan Zahid Hasan , Shirin Tahmina , Habib Zakir Hossain , Khan Iqbal Ansary , Begum Yasmin Ara , Azman Andrew S , Rahman Mahmudur , Clemens John David , Flora Meerjady Sabrina , Qadri Firdausi 
Published: December 2019

AbstractBackgroundDespite advances in prevention, detection, and treatment, cholera remains a major public health problem in Bangladesh and little is known about cholera outside of limited historical sentinel surveillance sites. In Bangladesh, a comprehensive national cholera control plan is essential, although national data are needed to better understand the magnitude and geographic distribution of cholera.MethodsWe conducted systematic hospital-based cholera surveillance among diarrhea patients in 22 sites throughout Bangladesh from 2014 to 2018. Stool specimens were collected and tested for Vibrio cholerae by microbiological culture. Participants’ socioeconomic status and clinical, sanitation, and food history were recorded. We used generalized estimating equations to identify the factors associated with cholera among diarrhea patients.ResultsAmong 26 221 diarrhea patients enrolled, 6.2% (n = 1604) cases were V. cholerae O1. The proportion of diarrhea patients positive for cholera in children &lt;5 years was 2.1% and in patients ≥5 years was 9.5%. The proportion of cholera in Dhaka and Chittagong Division was consistently high. We observed biannual seasonal peaks (pre- and postmonsoon) for cholera across the country, with higher cholera positivity during the postmonsoon in western regions and during the pre–monsoon season in eastern regions. Cholera risk increased with age, occupation, and recent history of diarrhea among household members.ConclusionsCholera occurs throughout a large part of Bangladesh. Cholera-prone areas should be prioritized to control the disease by implementation of targeted interventions. These findings can help strengthen the cholera-control program and serve as the basis for future studies for tracking the impact of cholera-control interventions in Bangladesh.
Fraction of Exhaled Nitric Oxide Levels Are Elevated in People Living With Human Immunodeficiency Virus Compared to Uninfected Controls, Suggesting Increased Eosinophilic Airway Inflammation
Authors: Thudium Rebekka F , Hughes Nicolai L P , Afzal Shoaib , Çolak Yunus , Gelpi Marco , Knudsen Andreas D , Kirkegaard-Klitbo Ditte Marie , Borges Álvaro H , Gerstoft Jan , Nordestgaard Børge G , Vestbo Jørgen , Lundgren Jens , Ronit Andreas , Nielsen Susanne D 
Published: December 2019

AbstractBackgroundIncreased risk of asthma and chronic obstructive pulmonary disease has been reported in people living with human immunodeficiency virus (PLWH). Fraction of exhaled nitric oxide (FeNO) is a marker of eosinophilic airway inflammation. We assessed FeNO levels in PLWH and matched uninfected controls and investigated whether human immunodeficiency virus (HIV) status is independently associated with elevated FeNO.MethodsFeNO was quantified by NIOX Vero and pulmonary function was assessed by spirometry in 432 PLWH from the Copenhagen Comorbidity in HIV Infection Study and in 1618 age- and sex-matched uninfected controls from the Copenhagen General Population Study. Elevated FeNO was defined as ≥25 parts per billion. Associations between FeNO and HIV status were adjusted for known potential confounders.ResultsMean age of PLWH was 50.7 (standard deviation [SD], 11.1) years and 97.4% received combination antiretroviral therapy. PLWH had higher FeNO than uninfected controls (median, 17.0 [interquartile range {IQR}, 11.0–26.0] vs 13.0 [IQR, 9.0–19.0]; P &lt; .001). Also, PLWH had a higher prevalence of elevated FeNO than uninfected controls (27.5% vs 12.3%; P &lt; .001). This association remained after adjusting for age, sex, height, smoking status, use of airway medication, blood eosinophils, and immunoglobulin E (adjusted OR [aOR], 3.56 [95% CI, 2.51–5.04]; P &lt; .001). Elevated FeNO was associated with self-reported asthma (aOR, 2.65 [95% CI, 1.66–4.24]; P &lt; .001) but not with airflow limitation (aOR, 1.07 [95% CI, .71–1.62]; P = .745).ConclusionsHIV status was independently associated with elevated FeNO, suggesting increased eosinophilic airway inflammation. The potential impact on chronic lung disease pathogenesis needs further investigation.
Safety and Effectiveness of Isoniazid Preventive Therapy in Pregnant Women Living with Human Immunodeficiency Virus on Antiretroviral Therapy: An Observational Study Using Linked Population Data
Authors: Kalk Emma , Heekes Alexa , Mehta Ushma , de Waal Renee , Jacob Nisha , Cohen Karen , Myer Landon , Davies Mary-Ann , Maartens Gary , Boulle Andrew 
Published: December 2019

Abstract

Background
Isoniazid preventive therapy (IPT) is widely used to protect against tuberculosis (TB) in people living with human immunodeficiency virus (HIV). Data on the safety and efficacy of IPT in pregnant women living with HIV (PWLHIV) are mixed. We used an individual-level, population-wide health database to examine associations between antenatal IPT exposure and adverse pregnancy outcomes, maternal TB, all-cause mortality, and liver injury during pregnancy through 12 months postpartum.

Methods
We used linked routine electronic health data generated in the public sector of the Western Cape, South Africa, to define a cohort of PWLHIV on antiretroviral therapy. Pregnancy outcomes were assessed using logistic regression; for maternal outcomes we applied a proportional hazards model with time-updated IPT exposure.

Results
Of 43 971 PWLHIV, 16.6% received IPT. Women who received IPT were less likely to experience poor pregnancy outcomes (adjusted odds ratio [aOR], 0.83 [95% confidence interval {CI}, .78–.87]); this association strengthened with IPT started after the first trimester compared with none (aOR, 0.71 [95% CI, .65–.79]) or with first-trimester exposure (aOR, 0.64 [95% CI, .55–.75]). IPT reduced the risk of TB by approximately 30% (aHR, 0.71 [95% CI, .63–.81]; absolute risk difference, 1518/100 000 women). The effect was modified by CD4 cell count with protection conferred if CD4 count was ≤350 cells/μL (aHR, 0.51 [95% CI, .41–.63]) vs 0.93 [95% CI, .76–1.13] for CD4 count &gt;350 cells/µL).

Conclusions
This analysis of programmatic data is reassuring regarding the safety of antenatal IPT, with the greatest benefits against TB disease observed in women with CD4 count ≤350 cells/μL.
Diagnosis of coronary microvascular dysfunction in the clinic
Authors: Ong Peter , Safdar Basmah , Seitz Andreas , Hubert Astrid , Beltrame John F , Prescott Eva 
Published: December 2019

Abstract
The coronary microcirculation plays a pivotal role in the regulation of coronary blood flow and cardiac metabolism. It can adapt to acute and chronic pathologic conditions such as coronary thrombosis or long-standing hypertension. Due to the fact that the coronary microcirculation cannot be visualized in human beings in vivo, its assessment remains challenging. Thus, the clinical importance of the coronary microcirculation is still often underestimated or even neglected. Depending on the clinical condition of the respective patient, several non-invasive (e.g. transthoracic Doppler-echocardiography assessing coronary flow velocity reserve, cardiac magnetic resonance imaging, positron emission tomography) and invasive methods (e.g. assessment of coronary flow reserve (CFR) and microvascular resistance (MVR) using adenosine, microvascular coronary spasm with acetylcholine) have been established for the assessment of coronary microvascular function. Individual patient characteristics, but certainly also local availability, methodical expertise and costs will influence which methods are being used for the diagnostic work-up (non-invasive and/or invasive assessment) in a patient with recurrent symptoms and suspected coronary microvascular dysfunction. Recently, the combined invasive assessment of coronary vasoconstrictor as well as vasodilator abnormalities has been titled interventional diagnostic procedure (IDP). It involves intracoronary acetylcholine testing for the detection of coronary spasm as well as CFR and MVR assessment in response to adenosine using a dedicated wire. Currently, the IDP represents the most comprehensive coronary vasomotor assessment. Studies using the IDP to better characterize the endotypes observed will hopefully facilitate development of tailored and effective treatments.
Smartphone application-assisted oral hygiene of orthodontic patients: a multicentre randomized controlled trial in adolescents
Authors: Deleuse Marine , Meiffren Catherine , Bruwier Annick , Maes Nathalie , Le Gall Michel , Charavet Carole 
Published: December 2019

Summary

Objective
The aim of this trial was to test whether the use of a smartphone application (app) connected to a toothbrush improves the oral hygiene compliance of adolescent orthodontic patients.

Design
The study was designed as a multicentre, randomized, controlled clinical trial.

Setting
Two academic hospitals.

Ethical approval
The study was approved by the ethics committee.

Subjects and methods
This multicentre randomized controlled trial was conducted on 38 adolescents aged 12–18 years with full-fixed orthodontic appliances. Participants were randomly assigned either to a test group that used an interactive oscillating/rotating electric toothbrush connected to a brushing aid app or to a control group that used an oscillating/rotating electric toothbrush alone. At baseline, all patients received verbal and written oral hygiene instructions.

Outcome measurements
Data collection was performed at T1 (baseline), T2 (6 weeks), T3 (12 weeks) and T4 (18 weeks—end of the study). At each time point, the plaque index (PI), gingival index (GI) and white spot lesion (WSL) score were recorded. Several app-related parameters were evaluated. Patient-related outcome measures were investigated in the test group.

Results
Test and control groups were similar at baseline except for WSL score. Between T1 and T4, PI and GI decreased significantly in both groups but evolutions were globally similar in both groups. Interestingly, at T3 (12 weeks), the PI was significantly lower in the app group than in the control group (P = 0.014). Data showed a marked decline in the use of the app over time in the test group.

Conclusions
This trial, conducted over 18 weeks in two academic hospitals, showed no significant effect of the use of the app in promoting oral hygiene.

Trial registration
Not registered
Larix decidua and additional light affect the methane balance of forest soil and the abundance of methanogenic and methanotrophic microorganisms
Authors: Praeg Nadine , Schwinghammer Larissa , Illmer Paul 
Published: December 2019

ABSTRACT
Due to the activity of methane-oxidizing bacteria, forest soils are usually net sinks for the greenhouse gas methane (CH4). Despite several hints that CH4 balances might be influenced by vegetation, there are only few investigations dealing with this connection. Therefore, we studied this soil–plant–microbe interaction by using mesocosm experiments with forest soil and Larix decidua, a common coniferous tree species within the Alps. Gas measurements showed that the presence of L. decidua significantly reduced CH4 oxidation of the forest soil by ∼10% (−0.95 µmol m−2 h−1 for soil vs −0.85 µmol m−2 h−1 for soil plus L. decidua) leading to an increased net CH4 balance. Increased light intensity was used to intensify the influence of the plant on the soil's CH4 balance. The increase in light intensity strengthened the effect of the plant and led to a greater reduction of CH4 oxidation. Besides, we examined the impact of L. decidua and light on the abundance of methanogens and methanotrophs in the rhizosphere as compared with bulk soil. The abundance of both methane-oxidizing bacteria and methanogenic archaea was significantly increased in the rhizosphere compared with bulk soil but no significant response of methanogens and methanotrophs upon light exposure was established.
Low-temperature rheology of calcite
Authors: Sly Michael K , Thind Arashdeep S , Mishra Rohan , Flores Katharine M , Skemer Philip 
Published: December 2019

SUMMARY
Low-temperature plastic rheology of calcite plays a significant role in the dynamics of Earth's crust. However, it is technically challenging to study plastic rheology at low temperatures because of the high confining pressures required to inhibit fracturing. Micromechanical tests, such as nanoindentation and micropillar compression, can provide insight into plastic rheology under these conditions because, due to the small scale, plastic deformation can be achieved at low temperatures without the need for secondary confinement. In this study, nanoindentation and micropillar compression experiments were performed on oriented grains within a polycrystalline sample of Carrara marble at temperatures ranging from 23 to 175 °C, using a nanoindenter. Indentation hardness is acquired directly from nanoindentation experiments. These data are then used to calculate yield stress as a function of temperature using numerical approaches that model the stress state under the indenter. Indentation data are complemented by uniaxial micropillar compression experiments. Cylindrical micropillars ∼1 and ∼3 μm in diameter were fabricated using a focused ion beam-based micromachining technique. Yield stress in micropillar experiments is determined directly from the applied load and micropillar dimensions. Mechanical data are fit to constitutive flow laws for low-temperature plasticity and compared to extrapolations of similar flow laws from high-temperature experiments. This study also considered the effects of crystallographic orientation on yield stress in calcite. Although there is a clear orientation dependence to plastic yielding, this effect is relatively small in comparison to the influence of temperature.