bluuebunny/crossref_metadata_2025_split huggingface dataset:
Enteral Feeding for Children on Bilevel Positive Pressure Ventilation for Status Asthmaticus
Authors: Komeswaran Kavipriya , Khanal Aayush , Powell Kimberly , Caprirolo Giovanna , Majcina Ryan , Robbs Randall S. , Basnet Sangita 
Published: June 2021

AbstractA retrospective data analysis was conducted to evaluate enteral nutrition practices for children admitted with status asthmaticus in a single-center pediatric intensive care unit. Of 406 charts, 315 were analyzed (63% male); 135 on bilevel positive airway pressure ventilation (BIPAP) and 180 on simple mask. Overall median age and weight were 6.0 (interquartile range [IQR]: 6.0) years and 24.8 (IQR: 20.8) kg, respectively. All children studied were on full feeds while still on BIPAP and simple mask; 99.3 and 100% were fed per oral, respectively. Median time to initiation of feeds and full feeds was longer in the BIPAP group, 11.0 (IQR: 20) and 23.0 hours (IQR: 26), versus simple mask group, 4.3 (IQR: 7) and 12.0 hours (IQR: 15), p = 0.001. The results remained similar after adjusting for gender, weight, clinical asthma score at admission, use of adjunct therapy, and duration of continuous albuterol. By 24 hours, 81.5% of patients on BIPAP and 96.6% on simple mask were started on feeds. Compared with simple mask, patients on BIPAP were sicker with median asthma score at admission of 4 (IQR: 2) versus 3 (IQR: 2) on simple mask, requiring more adjunct therapy (80.0 vs. 43.9%), and a longer median length of therapy of 41.0 (IQR: 41) versus 20.0 hours (IQR: 29), respectively, p = 0.001. There were no complications such as aspiration pneumonia, and none required invasive mechanical ventilation in either group. Enteral nutrition was effectively and safely initiated and continued for children admitted with status asthmaticus, including those on noninvasive bilevel ventilation therapy.
A healing-centered approach to preventing urban gun violence: The Advance Peace Model
Authors: Corburn Jason , Boggan DeVone , Muttaqi Khaalid , Vaughn Sam , Houston James , Thibodeaux Julius , Muhammad Brian 
Published: June 2021

AbstractUrban gun violence is the result of and contributes to trauma for both individuals and communities. In the US, African American males between 15 and 34 years old bear the greatest mortality burden from gun violence. Community-based approaches that use credible, street-level outreach workers to interrupt conflicts, mentor the small number of offenders in each community, and offer them alternatives to violent conflict resolution, have demonstrated success in reducing firearm homicides. Yet, few of these approaches explicitly aim to also address the traumas of structural violence that contribute to gun crime, including dehumanizing policing, extreme poverty, and institutional racism. This commentary describes a program called Advance Peace that aims to explicitly use a healing-centered approach to address the traumas associated with violence as a means to reduce gun crime in urban communities. We describe the trauma-informed, healing-centered approach used by Advance Peace, the components of its intensive outreach strategy called the Peacemaker Fellowship, and some impacts the program is having on trauma and healing. The evidence comes from observations, interviews, and the voices of Advance Peace participants and staff. We suggest that exploring the inner workings of the Advance Peace model is critical for identifying ways to support trauma-informed healing-centered approaches in Black and brown communities that have been ravaged by racism, incarceration, and heavy-handed state violence.
One-dimensional polyhedral chain of ThCl6 encapsulated within single-walled carbon nanotubes
Authors: Kuganathan Navaratnarajah 
Published: June 2021

Using density functional theory together with dispersion correction, we optimize geometries and calculate encapsulation energies, charge transfer, and electronic structures of a one-dimensional ThCl6 chain encapsulated within single-walled carbon nanotubes. The optimized structures are in agreement with the experimentally observed single chain of ThCl6 confined within nanotubes. Exoergic encapsulation energies indicate that the chain is thermodynamically stable inside the nanotubes. The inclusion of dispersion correction enhanced the encapsulation. The strong nature of encapsulation is further confirmed by the charge transfer between the nanotubes and the chain. The one-dimensional chain structure exhibits a small increase (0.20 eV) in the bandgap compared to that of bulk ThCl4. The metallic (15,0) tube becomes a narrow gap semiconductor upon encapsulation, while the semiconducting nature of the (17,0) tube is still kept despite the reduction in the bandgap.
A Nondestructive Detection Method Based on Target Resonance
Authors: Chen Lin , Guo Chunxian , Yinchun A , Zhang Huaiqing 
Published: June 2021

Abstract
Conventional eddy current testing (ECT) considers the detected target as an RL series (RLs) circuit. Starts from the problem of grounding grid break point detection, this paper proposes a detection method based on RLC series (RLCs) circuit resonance since a break point introduces a capacitor for the detection target. When the RLCs target circuit is coupled with the transmitter coil, the input impedance-frequency curve changes significantly. This paper focuses on methodological exploration, and the influences of target coil capacitance, resistance and detection distance on detection system’s impedance curve are discussed. Simulation and experimental results show the proposed method can distinguish the RLs and RLCs target circuit, and the detection distance of the RLC target is much greater than the RL target detection distance under the same condition. Besides, the feature region, where the impedance curve changes significantly when RLCs circuit is coupled to the transmitting coil, is located near the resonance point of the testing target. Moreover, the detection distance increases with the decrease of the target resistance. In addition, the closer the coil distance is and the smaller the resistance is, the more obvious the feature region will be.
Collaborative Control of Unmanned Underwater Vehicles
Authors: Wang Huailong , Yao Zhenxing , Guo Yinghui 
Published: June 2021

Abstract
This paper targets at urgent issues, which are the search for complex underwater environments and the effective control of underwater seas. Firstly, studies the collaborative control of task-oriented UUV. Secondly, designs reasonable controllers and prove the rendezvous of UUV. At last, based on Matlab software and numerical simulation, verifies the effectiveness of controllers.
Temperature Field Acquisition And Data Analysis Of Coke Oven
Authors: Zhao R T , Liu W Q , Wei J S , Guo Y Y , Wang L C , Yang P 
Published: June 2021

Abstract
In coking process of the coke oven, in order to realize the accurate detection of the temperature field data of the coke oven, this paper designs a high precision timing automatic inspection device. It uses a infrared pyrometer to quickly obtain the radial temperature profile of the flue, then based on it, it can get accurate flue temperature through analyzing. The temperature distribution of coke oven depends entirely on the results of the representative flue. The comparison between the temperature measured by the system and the temperature measured by people shows that the system is stable and reliable, it can accurately obtain the temperature of representative flue, then analyze the temperature field of the whole coke oven which taken as an important basis for adjusting the coke oven process parameters and ensuring the quality of coke.
Performance Evaluation of Penstock By-Pass System Modification on HEPP (Hydro Electric Power Plant) with CFD Analysis to Optimize Power Consumption
Authors: Harpendi  , Sugianto  , Wijanarko Dwi , Caesarendra Wahyu 
Published: June 2021

Abstract
This paper proposes a feasibility test for the performance modification of the penstock by-pass system using CFD (Computational-Fluid-Dynamic) simulations to optimize the energy use of the water-cooling system. The main advantage of this modification is the power savings of 45%-50%. This modification of the by-pass system is carried out with the aim that the final flowrate and pressure of modification can replace the Main-Water-Supply-Pump (MWSP) operation function in the unit’s main cooling system. CFD simulation is carried out on the impact of a pressure drop of 40-4 bar with a flow of 0.3 m3/s on the by-pass pipe flow of the existing penstock system and the condition of the pipe modification to be carried out. The numerical simulation results show that the MWSP network structure can accept load flow pressures varying 40-4 bar. This simulation refers to the conditions in HEPP Saguling Indonesia and can be applied to others.
Design of BOOST converter based on CN3306 chip
Authors: Linbo Gan , Anfei Xu , ziqiang Xi , xiaogang Du 
Published: June 2021

Abstract
CN3306 is a current mode fixed frequency PWM boost type multiple battery charging management integrated circuit. This article introduces the basic principles and characteristics of CN3306, and designs a boost circuit based on the characteristics of CN3306 chip with stable voltage, small ripple range and low power consumption. Explained in detail how to select peripheral circuit parameters and the practical application of CN3306 in BOOST circuit, and use the PSIM simulation software to build a photovoltaic power generation system model for simulation verification, the result reached the expected value.
Comprehensive Evaluation Indexes Framework and Evaluation Method for Substation Site Selection
Authors: Um Saony , Zhang Yiyi , Li Bin , Zhu Yun 
Published: June 2021

Abstract
The optimal planning of substation location is very significant for the construction of a reliable and reasonable power system, for this purpose, the comprehensive evaluation index system and the evaluation method are researched. Firstly, for the optimal layout of substation location an evaluation index system, which covers four aspects, i.e., security, economy, environment and operation, is established. Then, with a comprehensive consideration of the subjective weights and the objective weights, optimal combination weighting based on moment estimation theory is used to determine the optimal combination weight of each index. On this basis, an improved grey relational analysis method is proposed through a combination of grey relational analysis and cosine sorting method, to determine the optimal site selection more accurately and reasonably. Finally, using the proposed evaluation index system and evaluation method, the location of the newly added substation location in Phnom Penh power system is researched and the conclusion that Plan I should be taken as the location for the newly added substation is attained. The effectiveness and feasibility of the proposed evaluation index system and evaluation method are verified by the attained conclusion. Moreover, it shows that it has good application value for the optimization of substation location planning.
Self Powered Circuit with Composite Energy Storage for Monitoring Terminal in Distribution Network
Authors: Wang Yang , Xi Wenbing , Chen Jian , Chen Ming , Hu Sheng 
Published: June 2021

Abstract
In this paper, a self powered circuit with composite energy storage for monitoring terminal in distribution network is proposed, which is consist of a rectifier circuit, DC/DC converter and composite energy storage. Firstly, the self powered circuit obtained energy by CT (Current Transformer) from the lines in distribution network. Then, the expected DC voltage was obtained by rectifier circuit and regulated by DC/DC converter. To enhance the power supply reliability, composite energy storage is applied, which is regulated by coordinated control. To verify the effectiveness, a simulation model was built in MATLAB, and the result are satisfactory.
Research on cooperative optimal scheduling of industrial park microgrid considering controllable load
Authors: Liang Jishen , Kang Li , Zhang Hongye 
Published: June 2021

Abstract
This article uses a multi-objective Q-learning algorithm to study the collaborative optimization dispatching of the combined cooling, heating and power(CCHP) microgrid in the industrial park considering controllable load. First of all, the article establishes a microgrid collaborative optimization scheduling model with controllable load based on the optimization goals of minimizing microgrid operation and maintenance costs and minimizing polluting gas emissions. Secondly, the article introduces the solution method and steps of multi-objective Q-learning algorithm based on Pareto ranking method in multi-objective collaborative optimization of microgrid. Finally, the article takes an industrial park as an example and uses a multi-objective Q learning algorithm to solve the model. The calculation example analysis shows the effectiveness of the collaborative optimization model and solution method established in the article. The participation of controllable load in collaborative optimization can reduce the operation and maintenance cost of the microgrid, at the same time, it can reduce the load fluctuation of the microgrid and improve the power quality of the microgrid.
Optimal Scheduling Model of Virtual Power Plant and Thermal Power Units Participating in Peak Regulation Ancillary Service in Northeast China
Authors: Zhang Hongpeng , Li Dan , Tian Zengyao , Guo Liang , Chen Jie 
Published: June 2021

Abstract
In recent years, the rapid development of wind power generation and the low load growth rate have brought challenges to the peak regulation of power grid in Northeast China. In order to solve the peak regulation problem, virtual power plant (VPP) is proposed to participate in the peak regulation auxiliary service market in Northeast china, especially for deep peak regulation. Firstly, two modes of peak regulation in Northeast China are introduced in this paper, which are thermal power unit and VPP. With the definition of the peak regulation capacity for VPP, the Optimal Scheduling Model of VPP participating in peak regulation ancillary service is established. The simulations are carried out in MATLAB. The results show that the economy of peak regulation is significantly improved in peak regulation auxiliary service based on VPP.
Research on Optimal Design of Double Stator Low-speed High-torque Synchronous Motor Based on Surrogate Model
Authors: Chen Yang , Zhang Fengge , Yu Siyang , Jin Shi 
Published: June 2021

Abstract
Optimizing double stator low-speed high-torque synchronous motor (DSLHSM) with many parameters is difficult and time-consuming, so an optimization design method suitable for multi-parameter problems was proposed. Through the method, the design optimization of DSLHSM can be more effective, and the optimization time is greatly shortened. Firstly, the optimization variables were selected after the sensitivity of the key parameters of average torque and torque ripple was analysed by using design of experiments (DOE) and analysis of variance (ANOVA). Secondly high-precision dynamic surrogate models of average torque and torque ripple were established based on response surface model (RSM), and then the objective function was established according to the surrogate model and the genetic algorithm (GA) as well as the sequential subspace optimization method (SSOM) was used to solve the objective function step by step. Finally, the optimal solution was substituted into the finite element simulation model. The target performances of the motor before and after optimization were compared and analysed. The results proved the effectiveness and correctness of the optimization design method.
Research on the Modelling of a Single-winding Bearingless Permanent Magnet Brushless DC Motor
Authors: Tu Xiaowan , Bu Wenshao , Zeng Qian 
Published: June 2021

Abstract
This paper studies the radial suspension force mathematical model of a single-winding bearingless permanent magnet brushless DC motor, which provides a theoretical basis for the precise control of a single-winding motor. First, the physical structure of the single-winding BL-BLDC motor and the principle of radial suspension force generation are introduced. Then, the equivalent magnetic circuit method is used to establish the electromagnetic relationship inside the motor and the virtual displacement method is used to derive and calculate the mathematical model of the radial suspension force. The radial suspension force of the motor is composed of the force generated by the suspension force winding and the unbalanced magnetic pull force generated by the motor rotor deviating from the center position. Finally, the finite element analysis software is used to model and simulate the single-winding motor to analyze the change of the suspension force amplitude under different currents and the influence of different eccentric displacements on the unbalanced magnetic tension of the motor. The results show that the error between the simulation results obtained by the FEA and the theoretical calculation results of the mathematical model is small, which verifies the correctness of the radial suspension force mathematical model of the single-winding BL-BLDC motor.
Experimental assessment of swelling potential in montmorillonite soils
Authors: Pérez J C , Ruge J C , Rojas J P , Orjuela J A , Cáceres J R 
Published: June 2021

Abstract
The study of the physicochemical activity of clays is essential to understand the mechanical-hydraulic behavior. The experimental analysis of the expansivity of soils is linked to the content of clay minerals present in the tactoid tissue, which affect is directly in proportion to the volumetric change that soil may undergo. This work aims to carry out an analysis to understand the expansive behavior of the proposed clay materials, using different techniques, both conventional and modern. For this purpose, the bentonite clay used with a majority montmorillonite component was analyzed through petrographic tests and images analysis. The samples with a base material and different contents of montmorillonite were prepared. Montmorillonite is a clay mineral with a very high swelling potential because even when it was used in low proportions on a sandy base material, the influence of the material is strong and the expansivity remained high.
Applications of the method of lines for modeling the physical phenomenon of heat conduction
Authors: Nolasco Serna C , Afanador Garcia N , Guerrero Gómez G 
Published: June 2021

Abstract
It is claimed that most of the fundamental principles that govern the physical phenomena of interest in engineering applications can be described by differential equations. Therefore, the ability to analyze, solve and understand differential equations is essential for decision-making in the applied areas. In this sense, studying efficient methods to solve differential equations is a fundamental contribution in advancing the understanding of relevant physical models in engineering applications. The purpose of this research allowed to study the differential equation associated with Fourier’s heat transfer law and calculate its solution by two different methods than the traditional method. From this context, the study is related to the phenomenon of heat conduction in a metal bar under ideal conditions to later carry out its application in a particular case. First, the solution of the differential equation that models the physical phenomenon derived from the use of Fourier’s physical heat law is calculated with the use of statistical tools; then, a solution scheme is implemented using method of lines. Given the nature of the investigation, the solutions by both methods are compared about what is expected in the physical interpretation of Fourier’s law.
Design and simulation of conformal cooling for a die-casting mold insert
Authors: Shu Lei , Zhang Zhengwen , Ren Zhihao , Zhang Tao 
Published: June 2021

Abstract
Traditional cooling channels make the mold have defects of poor cooling and low efficiency. Selective laser melting(SLM) can be used to produce the mold with conformal cooling channels. In this paper, the design and simulation of conformal cooling channles for a die-casting mold insert are carrried out. Compared with traditional cooling channels, the distribution of conformal cooling channels is closer to the die surface to be cooled and the cooling is more effective. After 5 s of simulation analysis, the effective cooling efficiency is 54.83%, and the temperature distribution on the die surface is more uniform. The die-casting mold insert with conformal cooling channels is fabricated by XDM 250.
Design of an Airtightness Detection Device for Infusion Connector with Automatic Loading/Unloading Function
Authors: Peng Yi Hang , Yan Chen Ting , Peng Liu Xue 
Published: June 2021

Abstract
Based on the production and detection procedures of a medical infusion connector, the original detection device was innovatively designed, and an airtightness detection device with automatic loading/unloading function was developed, in an effort to improve the loading/unloading efficiency and airtightness detection efficiency of the infusion connector and complete the automatic detection task at rate of 20-30 ones per min. The basic device composition of this infusion connector was introduced, and the basic structural features and working principles of each device were analyzed. The importance was attached to the calculation methods for key dimensions that influenced the detection quality and material loading, and in this way, while the batch material loading was realized, the difficulties in the airtightness detection and automatic sorting of finished products were solved. The original manual material loading was converted into automatic material loading and the frequency of simultaneous airtightness detection was increased, which reduced the amount of labor used, improved the overall production efficiency and lowered the production cost.
Design of multifunctional combined walking aid
Authors: Gu Jie , Wang Jingyuan , Sun Ming , Wu Qing 
Published: June 2021

Abstract
In view of the lack of a portable walking aid with multiple functions in the current market, a multifunctional combined walking aid is designed. The device is based on raspberry pie, and controls the whole device through human-computer interaction of touch screen; the dynamic and non dynamic switching is realized through disassembly structure, which can have the advantages of walking aid and crutch structure; a stacked connection structure is designed, which can realize the functions of folding and drug storage in a cylindrical structure at the same time; a vertical driving wheel is adopted, which can realize the function of folding and drug storage. The independent driving of two wheels enables the user to enter the control position from the rear side of the walking aid. The experimental results of the prototype show that the device has the advantages of strong functionality, convenient operation and broad application prospects.
Analysis of Dynamic Characteristics of 6-PSS Parallel Mechanism Considering Spherical Hinge Clearance
Authors: Kun Zhao , Daiping Song 
Published: June 2021

Abstract
This paper is based on a new type of 6-PSS parallel mechanism. Firstly, considering the clearance between the kinematic pair connecting the upper platform and the link, establish a kinematic model considering the spherical hinge clearance. Then, based on the Lankarani-Nikravesh(L-N) contact model and the modified Coulomb friction model calculate the contact force when the spherical elements contact, which is equivalent to the center of the corresponding member as the generalized external force. Apply for Newton Euler method with Lagrange Multiplier to establish the dynamics model of the parallel mechanism with clearance. Finally, the R-K method is used to solve the dynamic equation and analyze the influence of different spherical hinge gap sizes on the dynamic characteristics of the mechanism.