bluuebunny/crossref_metadata_2025_split huggingface dataset:
Optimal Operation Strategy of Energy Storage System in PV-integrated EV Charging Station Based on improved NSGA-II
Authors: Shi Shanshan , Zhang Yu , Fu Zhangjie , Xu Qin , Yang Qixing , Fang Chen , Shi Shuntian 
Published: February 2021

Abstract
In order to realize the economic operation of PV-integrated EV charging station and reduce the additional construction and transformation brought by the charging station to the power grid, an optimal operation strategy of energy storage system in PV-integrated EV charging station based on the improved NSGA-II is proposed. Firstly, with the power of the energy storage system and the capacity of the transformer as constraints, the optimization operation model of energy storage is built with the minimum variance of side loads of the power grid and the minimum purchase cost from the power grid as objective functions. Then, aiming at the low efficiency of the traditional NSGA-II gene recombination operator, the improved NSGA-II based on the adaptive recombination operator is proposed to solve the model, and the optimal operation strategy is obtained from the final Pareto solution set by using fuzzy clustering method. Finally, the effectiveness of the proposed algorithm is verified by example simulation, indicating that the improved NSGA-II can further improve the operation economy of charging stations and the load level of the power grid.
Fault-Tolerant/Intrusion-Tolerant Control Of Island AC Microgrid System
Authors: Jun Wang , BingQiang Wang , Tian Feng 
Published: February 2021

Abstract
Aiming at arbitrary failures of actuators and network attacks, the design problems of passive fault-tolerant/intrusion-tolerant robust H∞ controllers for island AC microgrid inverter systems are studied. The controller has a good ability to suppress external limited energy disturbances. First, a closed-loop system model including actuator failure was established; then, the network attack on the actuator is described as a special external interference to design a H∞ robust passive fault-tolerant/intrusion-tolerant controller, and the Lyapunov equation and linear matrix inequality are used to obtain sufficient conditions for the progressive stability of the closed-loop fault system. Finally, the feasibility and effectiveness of the designed control law are verified through MATLAB simulation.
Modeling and Efficiency Analysis of LCC-S Inductive Power Transmission (IPT) system
Authors: Chen Bo , Hu Guozhen , Zhang Xianhe , Ma Xuejun 
Published: February 2021

Abstract
This paper analyzed the factors affecting the transmission efficiency of IPT system based on LCC-S compensation topology. By modeling LCC-S compensation networks, the condition of input impedance as resistive load is derived and the frequency characteristics of input impedance have been analyzed. And the frequency working range to improve the efficiency of the system have been also derived. The input and output characteristics of LCC-S compensation are further studied, and the effect of parameters on regulating the transmission power of IPT system have been verified, which provide an idea for the parameter design of IPT system compensation network.
A New Kind Of Fast Simulation Model for AC-DC Hybrid Power Grid
Authors: Shan Junru , Liu Chongru 
Published: February 2021

Abstract
With the continuous operation of uhv AC-DC project in China, the system appears the problem of "strong direct current and weak direct current". With the increasingly significant influence between AC-DC and multi-DC, the power grid operation is accelerated rapidly, and higher requirements are proposed for the scale, accuracy and speed of power grid simulation. Through the use of power system modeling, multi-time scale simulation, digitalanalog hybrid real-time simulation and other three aspects to summarize the status of simulation technology, and through the development of AC and DC power grid needs to analyze. It is pointed out that improving the modeling accuracy of complex models such as DC, new energy, FLEXIBLE AC transmission system and load, enlarging the electromagnetic transient simulation scale and improving the simulation efficiency of large-scale power grid will be the research emphases of improving the simulation capability of large-scale power grid.
Mountain Rescue Mobile Platform based on Anti-saturation Strategy Proportional Integral Control
Authors: Qing Zhou , Lei Xia , Wei Song , Zifan Fan , You Zhou , Jing Ji 
Published: February 2021

Abstract
Rugged terrain and inconvenient transportation in the rural areas of southwest China, lead to difficulties in transporting power equipments such as electric poles, transmission lines and small transformers in time of power grid upgrading and emergencies. In particular, when there is no road in the last few kilometers, the transportation relies totally on manpower. In this paper, the dynamics of the power equipment mobile platform is analyzed, and then its stability is analyzed using the proportional-integral control method with anti-saturation strategy. Combined with the control rate characteristics and anti-saturation strategy, the stable operation conditions of the mobile platform are obtained, making it possible for the platform to drive in mountains, hills and farmlands. This creates an efficient mechanical operation mode under no-road conditions during construction.
Demagnetization Fault Diagnosis of PMSM Based on Multiple Signals Calculation
Authors: Zhou Shaowei , Yu YinQuan , Yang JinWen , Tu WenBin , Wu Guopei 
Published: February 2021

Abstract
To simplify the design of the control system of the permanent magnet synchronous motor (PMSM), this paper proposes a co-simulation method for PMSM using Maxwell® to build a motor model and using Simplorer® and Simulink® to design an external circuit and a closed-loop control circuit. The simulation results show that our proposed method can simulate demagnetization faults with various demagnetization pattern in PMSM, and provides an effective way to obtain demagnetization fault data. Our simulation results show that the electromagnetic torque, radial magnetic density, and stator current can be used as a fault indicator of demagnetization after wavelet and Empirical Mode Decomposition (EMD) technologies are applied.
Research on anode power supply of low-power Hall thruster
Authors: Hangyu JIA , Chengzhi QU , Yuhui JI , Guangrui ZHOU , Suliang WU 
Published: February 2021

Abstract
Based on the small power, small size, and high-efficiency micro-thrust requirements of micro-satellites, this paper mainly studies the anode power supply topology suitable for micro-satellites. The flyback converter and the secondary volta ge doubler structure are used to achieve high gain. At the same time, in order to improve the efficiency, the resonant soft switching technology is used to achieve valley opening through the resonance of the transformer leakage inductance and the capacitor to realize the soft switching of the switch tube and the diode. This article developed a 250W experimental prototype, and conducted a series of no-load and full-load tests under closed-loop steady-state operation, which can realize the zero-voltage turn-on of the switch tube and the zero-current turn-off of the diode. The efficiency is up to 93.7% under full load conditions, while the output ripple is small and there is no oscillation, and the device stress is small, which proves to be suitable for use in the anode power supply of micro satellites.
Optimization of an experimental hydraulic system with two flow control variables
Authors: Galim Yuval Ben , Amidan David , Shenha Hadas , Cahana Yitzhak , Shoihet Arthur , Kadmon Yagil 
Published: February 2021

Abstract
Efficiency optimization is essential in many areas of engineering and system design. This work examines the efficiency of an experimental hydraulic system from different aspects: mechanical efficiency, pumps efficiency and flow stability. In this work, the flow control system depends on two independent variables with additional four degrees of freedom in terms of working pumping stations and flow path. An optimization algorithm was developed in order to identify the optimal duty point in terms of the efficiencies and stability within all possible system configurations. The results of the model are presented on several plots covering a 3D overview plot showing the system capabilities and additional 2D plots addressing each efficiency and stability optimization results and also demonstrating the system behaviour under different working conditions. The results of this work enables the user to easily choose the amount of working pumps and the duty point in order to achieve the desired flow rate. Moreover, it enables working in the desired optimal efficiency (or stability) in the proposed complicated two variable control system.
Deterioration of structural parameters due to corrosion in prestressed concrete identified by smart probe-based piezo sensor
Authors: Bansal Tushar , Talakokula Visalakshi 
Published: February 2021

Abstract
In this paper, the deterioration of structural parameters namely equivalent stiffness, mass and damping due to corrosion in prestressed concrete (PC) structures using a smart probe-based piezo sensor (SPPS) via electro-mechanical impedance (EMI) technique is presented. The effectiveness of the SPPS was first demonstrated qualitatively by a change in the raw conductance signatures during the corrosion progression and different phases of corrosion (initiation, propagation, and cracking) was identified by the quantitative statistical damage indices. Assessment of material degradation under chloride-laden environment was done using equivalent structural parameters identified by SPPS from the raw admittance signatures and demonstrated the possibility to calibrate with the corrosion rates. Experimental results indicate that SPPS is very sensitive in capturing the changes during the corrosion progression and statistical metric-based method can identify the phases of corrosion. The identified structural parameters (stiffness, mass, and damping) are found to be effective in assessing the material degradation under corrosion in a realistic manner. Hence, it can be concluded that the SPPS via EMI method can be effectively employed in real-life scenarios for diagnosing the PSC structures subjected to corrosion.
Imipenem/cilastatin/relebactam: A new carbapenem β-lactamase inhibitor combination
Authors: Mansour Hanine , Ouweini Ahmad E L , Chahine Elias B , Karaoui Lamis R 
Published: February 2021

Abstract

Purpose
The pharmacology, pharmacokinetics, pharmacodynamics, antimicrobial activity, efficacy, safety, and current regulatory status of imipenem/cilastatin/relebactam are reviewed.

Summary
Imipenem/cilastatin/relebactam is a newly approved anti-infective combination of a well-established β-lactam and a new β-lactamase inhibitor for the treatment of complicated urinary tract infections (cUTIs), including pyelonephritis, and complicated intra-abdominal infections (cIAIs) caused by susceptible gram-negative bacteria in patients 18 years of age or older with limited or no alternative treatment options. The antibiotic is also indicated for the treatment of hospital-acquired bacterial pneumonia (HABP) and ventilator-associated bacterial pneumonia (VABP). The antibiotic is active in vitro against a wide range of pathogens, including multidrug-resistant (MDR) Pseudomonas aeruginosa and carbapenem-resistant Enterobacterales (CRE) such as Klebsiella pneumoniae carbapenemase. The addition of relebactam does not restore the activity of imipenem against metallo-β-lactamase (MBL)–producing Enterobacterales and carbapenem-resistant Acinetobacter baumannii. Two phase 3 clinical trials of imipenem/cilastatin/relebactam were conducted. In the RESTORE-IMI 1 trial, the efficacy and safety of imipenem/cilastatin/relebactam was found to be comparable to that of imipenem/cilastatin plus colistin for the treatment of infections caused by imipenem-nonsusceptible gram-negative bacteria in patients with HABP/VABP, cUTIs, and cIAIs, with a significantly lower incidence of nephrotoxicity reported with the new antibiotic. The RESTORE-IMI 2 trial demonstrated the noninferiority of imipenem/cilastatin/relebactam to piperacillin/tazobactam for the treatment of HABP/VABP. Commonly reported adverse events in clinical trials included anemia, elevated liver enzymes, electrolyte imbalances, nausea, vomiting, diarrhea, headache, fever, phlebitis and/or infusion-site reactions, and hypertension.

Conclusion
Imipenem/cilastatin/relebactam is a new β-lactam/β-lactamase inhibitor combination with activity against MDR gram-negative bacteria, including many CRE but excluding MBL-producing Enterobacterales and carbapenem-resistant Acinetobacter baumannii. It is approved for the treatment of cUTIs, cIAIs, and HABP/VABP.
Accuracy and safety of medication histories obtained at the time of intensive care unit admission of delirious or mechanically ventilated patients
Authors: Cicci Corey D , Fudzie Seyram S , Campbell-Bright Stacy , Murray Brian P , Northam Kalynn A 
Published: February 2021

Abstract

Purpose
Obtaining an accurate medication history from patients on hospital admission is a priority in pharmacy practice. Timely and accurate histories are imperative as they may help determine the etiology of illness and prevent medication errors. We conducted a quality improvement project to assess the accuracy of alternate-source medication histories obtained for critically ill patients who were delirious or mechanically ventilated at the time of intensive care unit admission.

Methods
Included patients were 18 years of age or older, admitted to the medical intensive care unit from August 2017 through January 2018, and had a medication history obtained from a family member or outpatient pharmacy due to active delirium or mechanical ventilation. Patients were directly interviewed after resolution of delirium or extubation. Discrepancies between the initial and follow-up histories were documented and categorized using the National Coordinating Council for Medication Error Reporting and Prevention (NCC MERP) Index for Categorizing Medication Errors.

Results
Forty patients were included. One hundred four discrepancies were documented, with a median of 2 discrepancies per patient. The most common types of discrepancies were addition (51.9%), followed by omission (24.0%). NCC MERP index category A (51%) was the most common error classification identified.

Conclusion
Discrepancies between initial and follow-up medication histories occurred at a frequent rate in delirious or mechanically ventilated patients; however, these discrepancies tended to be of low risk severity.
Burnout and secondary traumatic stress in health-system pharmacists during the COVID-19 pandemic
Authors: Jones Adam M , Clark John S , Mohammad Rima A 
Published: February 2021

Abstract

Purpose
To describe the prevalence of burnout and secondary traumatic stress (STS) in health-system pharmacists during the coronavirus disease 2019 (COVID-19) pandemic.

Methods
A cross-sectional, professional pharmacy organization listserver–based online survey of a target group of health-system pharmacists across the United States was conducted. The survey was sent out through professional organization listservers and was anonymous and voluntary. The survey questionnaire included items regarding demographics and employment characteristics, COVID-19–related questions, a survey of respondents’ perceptions of the prevalence and severity of burnout, and the Professional Quality of Life Scale (ProQOL). The ProQOL assessed respondents for compassion satisfaction (subcategorized as burnout and STS) and compassion fatigue. Descriptive statistics was used to assess the prevalence of burnout and STS.

Results
Four hundred eighty-four health-system pharmacists completed the survey. Based on respondents’ self-ratings of burnout, 47% were identified as having current burnout and 81% as having a history of burnout. Based on ProQOL scoring, 65.3% of respondents were identified as having a moderate or high likelihood of burnout, which was a prevalence higher than that indicated by respondents’ self-ratings. Additionally, 51.4% of respondents were identified as having a moderate or high probability of STS and 99.4% as having a moderate or high probability of compassion satisfaction.

Conclusion
The survey found that over half of health-system pharmacists were affected with burnout, half with STS, and all with compassion satisfaction during the COVID-19 pandemic. Unfortunately, the development of burnout and STS in these health-system pharmacists may lead to several work-related consequences (eg, increase risk of medical errors, depression); therefore, addressing burnout and STS is crucial. Further studies of the consequences of burnout and STS during the COVID-19 pandemic are needed.
Evidence of horizontal gene transfer between land plant plastids has surprising conservation implications
Authors: Hedenäs Lars , Larsson Petter , Cronholm Bodil , Bisang Irene 
Published: February 2021

Abstract

Background and Aims
Horizontal gene transfer (HGT) is an important evolutionary mechanism because it transfers genetic material that may code for traits or functions between species or genomes. It is frequent in mitochondrial and nuclear genomes but has not been demonstrated between plastid genomes of different green land plant species.

Methods
We Sanger-sequenced the nuclear internal transcribed spacers (ITS1 and 2) and the plastid rpl16 G2 intron (rpl16). In five individuals with foreign rpl16 we also sequenced atpB-rbcL and trnLUAA-trnFGAA.

Key Results
We discovered 14 individuals of a moss species with typical nuclear ITSs but foreign plastid rpl16 from a species of a distant lineage. None of the individuals with three plastid markers sequenced contained all foreign markers, demonstrating the transfer of plastid fragments rather than the entire plastid genome, i.e. entire plastids were not transferred. The two lineages diverged 165–185 Myr BP. The extended time interval since lineage divergence suggests that the foreign rpl16 is more likely explained by HGT than by hybridization or incomplete lineage sorting.

Conclusions
We provide the first conclusive evidence of interspecific plastid-to-plastid HGT among land plants. Two aspects are critical: it occurred at several localities during the massive colonization of recently disturbed open habitats that were created by large-scale liming as a freshwater biodiversity conservation measure; and it involved mosses whose unique life cycle includes spores that first develop a filamentous protonema phase. We hypothesize that gene transfer is facilitated when protonema filaments of different species intermix intimately when colonizing disturbed early succession habitats.
3D Virtual Planning for Rhinoplasty Using a Free Add-On for Open-Source Software
Authors: Sobral Davi S , Duarte Daniele W , Dornelles Rodrigo F V , Moraes Cícero A C 
Published: February 2021

Abstract

Background
Rhinoplasty is one of the most frequent aesthetic surgeries; the procedure can be challenging for inexperienced surgeons, and positive outcomes depend on good communication with the patient, proper planning, and precise execution. Three-dimensional (3D) technology has emerged to address these issues, but specific software for 3D planning tends to be expensive.

Objectives
This study presents a simple, low-cost method for 3D simulation to plan rhinoplasty.

Methods
This preliminary report describes 3D rhinoplasty planning in a series of 3 cases employing free software and an add-on especially developed for rhinoplasty (Blender and RhinOnBlender, respectively). The photogrammetry protocol, which can be performed easily with a smartphone, is described in detail along with all the steps in 3D planning.

Results
The software and add-on automated the process, making the tool environment accessible to surgeons who are not familiar with graphic design software. The surgeries were uneventful in all cases, and the patients were satisfied with the outcomes.

Conclusions
3D graphic technology has provided significant advances in health research, improvement, and teaching for surgeons and communication between surgeons and patients. Free open-source software and add-ons are excellent options that offer proven utility, affordability, and ease of utilization to healthcare providers.
Epinephrine administration for adult out-of-hospital cardiac arrest patients with refractory shockable rhythm: time-dependent propensity score-sequential matching analysis from a nationwide population-based registry
Authors: Matsuyama Tasuku , Komukai Sho , Izawa Junichi , Gibo Koichiro , Okubo Masashi , Kiyohara Kosuke , Kiguchi Takeyuki , Iwami Taku , Ohta Bon , Kitamura Tetsuhisa 
Published: February 2021

AbstractAimsLittle is known about the effect of prehospital epinephrine administration in out-of-hospital cardiac arrest (OHCA) patients with refractory shockable rhythm, for whom initial defibrillation was unsuccessful.Methods and resultsThis study using Japanese nationwide population-based registry included all adult OHCA patients aged ≥18 years with refractory shockable rhythm between January 2014 and December 2017. Patients with or without epinephrine during cardiac arrest were sequentially matched using a risk set matching based on the time-dependent propensity scores within the same minute. The primary outcome was 1-month survival. The secondary outcomes included 1-month survival with favourable neurological outcome (cerebral performance category scale: 1 or 2) and prehospital return of spontaneous circulation (ROSC). Of the 499 944 patients registered in the database during the study period, 22 877 were included. Among them, 8467 (37.0%) received epinephrine. After time-dependent propensity score-sequential matching, 16 798 patients were included in the matched cohort. In the matched cohort, positive associations were observed between epinephrine and 1-month survival [epinephrine: 17.3% (1454/8399) vs. no epinephrine: 14.6% (1224/8399); RR 1.22 (95% confidence interval, CI: 1.13–1.32)] and prehospital ROSC [epinephrine: 22.2% (1868/8399) vs. no epinephrine: 10.7% (900/8399); RR 2.07 (95% CI: 1.91–2.25)]. No significant positive association was observed between epinephrine and favourable neurological outcome [epinephrine: 7.8% (654/8399) vs. no epinephrine: 7.1% (611/8399); RR 1.13 (95% CI 0.998–1.27)].ConclusionUsing the nationwide population-based registry with time-dependent propensity score-sequential matching analysis, prehospital epinephrine administration in adult OHCA patients with refractory shockable rhythm was positively associated with 1-month survival and prehospital ROSC.
Optimal Taxation of Families: Mirrlees Meets Becker
Authors: Kurnaz Musab 
Published: February 2021

AbstractThis paper studies optimal taxation of families—a combination of an income tax schedule and child tax credits. Child-rearing requires both goods and parental time, which distinctly impact the design of optimal child tax credits. In the quantitative analysis, I calibrate my model to the US economy and show that the optimal child tax credits are U-shaped in income and decrease with family size. In particular, the optimal credits decrease in the first nine deciles of the income distribution and then increase thereafter. Implementing the optimum yields large welfare gains.