mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
A comparative study of different online model parameters identification methods for lithium-ion battery

Precise states estimation for the lithium-ion battery is one of the fundamental tasks in the battery management system(BMS),where building an accurate battery model is the first step in model-based estimation algorithms.To date,although the comparative studies on different battery models have been performed intensively,little attention is paid to the comparison among different online parameters identification methods regarding model accuracy,robustness ability,adaptability to the different battery operating conditions and computation cost.In this paper,based on the Thevenin model,the three most widely used online parameters identification methods,including extended Kalman filter(EKF),particle swarm optimization(PSO),and recursive least square(RLS),are evaluated comprehensively under static and dynamic tests.It is worth noting that,although the built model's terminal voltage may well follow a measured curve,these identified model parameters may significantly out of reasonable range,which means that the error between measured and predicted terminal voltage cannot be seen as a gist to determine which model is the most accurate.To evaluate model accuracy more rigorously,battery state-of-charge(SOC)is further estimated based on identified model parameters under static and dynamic tests.The SOC prediction results show that EKF and RLS algorithms are more suitable to be used for online model parameters identification under static and dynamic tests,respectively.Moreover,the random offset is added into originally measured data to verify the robustness ability of different methods,whose results indicate EKF and RLS have more satisfactory ability against imprecisely sampled data under static and dynamic tests,respectively.Considering model accuracy,robustness ability,adaptability to the different battery operating conditions and computation cost simultaneously,EKF is recommended to be adopted to establish battery model in real application among these three most widely used methods.
Safety modeling and protection for lithium-ion batteries based on artificial neural networks method under mechanical abuse

The safety of lithium-ion batteries under mechanical abuse has become one of the major obstacles affecting the development of electric vehicles.In this paper,the lithium-ion battery safety model under mechanical abuse conditions is proposed by the Back Propagation Artificial Neural Network(BP-ANN)optimized by the Genetic Algorithm(GA).By experimental and simulation results,the proposed method can effectively predict battery mechanical properties.The corresponding correlation coefficient is greater than 0.99,the failure warning model has more safety margin,and the average security margin is greater than 29%.The multi-source warning weight shows that the mechanical soft short-circuit has the greatest warning margin,followed by that of the soft short-circuit of the electrical signal.The thermal soft short-circuit has the lowest warning margin because of the low thermal conductivity.The qualitative simulation results of the battery module reveal that,when electric vehicles are subjected to mechanical abuse conditions,the rapid reduction in the state-of-charge(SOC)of the rear batteries can effectively increase the reliability of the battery module.The proposed safety model is important to protect the safety and stability of lithium-ion batteries,which is conducive to promoting new energy vehicles and protecting the environment.
Design of an all-day electrical power generator based on thermoradiative devices

Energy harvesting from sun and outer space using thermoradiative devices(TRDs),despite being promising renewable energy sources,is limited only to daytime and nighttime period,respectively.Such a system with 24-hour continuous electric power generation remains an open question thus far.Here,a TRD-based power generator that harvests solar energy via concentrated solar irradiation during daytime and via thermal infrared emission towards the outer space at nighttime is proposed,thus achieving the much sought-after 24-hour electrical power generation.Correspondingly,a rigorous thermodynamical model is developed to investigate the all-day performance characteristics,parametric optimum design,and the role of various energy loss mechanisms.The calculated results predict that the daytime TRD-based system yields a peak efficiency of 12.6% under 10 suns,thus significantly outperforming the state-of-art record-setting solar thermoelectric generator.This work reveals the potential of TRD towards 24-hour electricity generation and future renewable energy technology.
Multiparameter optimization and configuration comparison of supercritical CO_2 Brayton cycles based on efficiency and cost tradeoff

Supercritical CO_2 Brayton cycle has high efficiency,compactness,and excellent power generation potential.In the design of the cycle,some parameters,such as recuperator pinch point temperature difference(ΔT_(rec,pp)),turbine inlet temperature(T_(tur,in)),and maximum cycle pressure(p_(max)),are often preset without optimization.Furthermore,different preferences on efficiency and cost tradeoff can significantly affect the optimal design of the cycle,and the influence of different parameters on the design condition and the optimum cycle configuration becomes unclear as the preference changes.In this study,different preferences on efficiency and cost tradeoff are considered,and the effects of cycle configuration and optimization parameter addition on the tradeoff are investigated.In addition,four configurations under different preferences on tradeoff are recommended.Results show that the design condition parameters ΔT_(rec,pp)decrease and T_(tur,in)and p_(max)increase as the preference of thermal efficiency(W_(th))increases.Different optimized parameters affect the results of the design point and cycle performance.In addition,the simple recuperative cycle and reheating cycle are recommended when low cycle initial cost dominates(W_(th)<0.598),and the recompression cycle and intercooling cycle are recommended when high cycle thermal efficiency dominates(W_(th)>0.701).The decision maker can select appropriate configuration according to specific preferences.
Bio-inspired slippery surfaces with multifunctional anti-icing performance

Superior anti-icing and active deicing multifunctional surfaces are highly desired in outdoor infrastructure and work of aircraft,automobiles,wind turbines,power transmission,etc.Herein,inspired by microstructures and functions of natural opal and Nepenthes pitcher plants,we present a novel multifunctional inverse opal slippery anti-icing surface(IOSAS)by employing a combined method of colloidal nanoparticles self-assembly,microstructure mold replication,and hydrophobic lubricating fluid infiltration.Because of the 3D long range ordered nanoscale porous structure of artificial inverse opal,the lubricating liquid could wick into,wet,and stably adhere to IOSAS,forming thousands of solid-liquid interfaces and defect-free and inert slippery surface.Thus,the IOSAS was imparted with inhibiting ice nucleation property and hindering heat transfer and ice crystals' growth characteristics.Owing to the existence of a thin liquid layer on the surface,the mechanical interlock between porous substrate and ice is greatly weakened,which imparts the slippery surface with low ice adhesion strength,and the frozen droplet and ice bulk could be easily removed.In addition,we have demonstrated that the supercooled IOSAS has no adhesion to moving water droplets,while various subcooled metal surfaces are adhesive,and this exhibits liquid-infused inverse opal surfaces dynamic low-temperature water-repellent performance.These characteristics endow IOSAS with multifunctional anti-icing performances,making it a promising option for a wide range of ice-phobic applications.
30 m global impervious surface area dynamics and urban expansion pattern observed by Landsat satellites:From 1972 to 2019

Using more than three million Landsat satellite images,this research developed the first global impervious surface area (GISA) dataset from 1972 to 2019.Based on 120,777 independent and random reference sites from 270 cities all over the world,the omission error,commission error,and F-score of GISA are 5.16%,0.82%,and 0.954,respectively.Compared to the existing global datasets,the merits of GISA include:(1) It provided the global ISA maps before the year of 1985,and showed the longest time span (1972-2019) and the highest accuracy (in terms of a large number of randomly selected and third-party validation sample sets);(2) it presented a new global ISA mapping method including a semi-automatic global sample collection,a locally adaptive classification strategy,and a spatio-temporal post-processing procedure;and (3) it extracted ISA from the whole global land area (not from an urban mask) and hence reduced the underestimation.Moreover,on the basis of GISA,the long time series global urban expansion pattern (GUEP) has been calculated for the first time,and the pattern of continents and representative countries were analyzed.The two new datasets (GISA and GUEP) produced in this study can contribute to further understanding on the human's utilization and reformation to nature during the past half century,and can be freely download from http://irsip.whu.edu.cn/resources/dataweb.php.
Recent advances in lentiviral vectors for gene therapy

Lentiviral vectors (LVs),derived from human immunodeficiency virus,are powerful tools for modifying the genes of eukaryotic cells such as hematopoietic stem cells and neural cells.With the extensive and in-depth studies on this gene therapy vehicle over the past two decades,LVs have been widely used in both research and clinical trials.For instance,third-generation and selfinactive LVs have been used to introduce a gene with therapeutic potential into the host genome and achieve targeted delivery into specific tissue.When LVs are employed in leukemia,the transduced T cells recognize and kill the tumor B cells;in β-thalassemia,the transduced CD34~+ cells express normal β-globin;in adenosine deaminase-deficient severe combined immunodeficiency,the autologous CD34~+ cells express adenosine deaminase and realize immune reconstitution.Overall,LVs can perform significant roles in the treatment of primary immunodeficiency diseases,hemoglobinopathies,B cell leukemia,and neurodegenerative diseases.In this review,we discuss the recent developments and therapeutic applications of LVs.The safe and efficient LVs show great promise as a tool for human gene therapy.
Abnormal meiosis in fertile and sterile triploid cyprinid fish

Meiosis is the key process for producing mature gametes.A natural fertile triploid Carassius auratus population (3nDTCC) and an artificially derived sterile triploid crucian carp (3nCC) have been previously observed,providing suitable model organisms for investigating meiosis characteristics in triploid fish.In the present study,the microstructures and ultrastructures of spermatogenesis were studied in these fishes.TdT-mediated dUTP nick end labeling detection was performed to investigate the apoptosis of spermatocytes.Fluorescence in situ hybridization was employed to trace chromatin pairing.In addition,the mRNA expressions of cell cycle-related genes (i.e.,cell division control 2 and cell cycle protein B) were determined by quantitative realtime polymerase chain reaction to illustrate the molecular mechanism of abnormal meiosis in the 3nCC.The results showed that the 3nCC undergoes an irregular prophase I,with the chromosomes distributed in a unipolar radial manner and exhibiting partial pairing,hindered metaphase I,and degenerated cells in the subsequent stages.Meanwhile,the 3nDTCC presented a relatively regular meiotic prophase I with complete conjugate chromosome pairs and chromosomes distributed along the karyotheca,which were presented as a ring structure by slicing.Only the spreads with 130-150 irregular chromosomes can be easily detected in the 3nDTCC,suggesting that it may undergo an abnormal metaphase I.This study provides new insights into the meiosis of fertile and sterile triploid cyprinid fish.
Expanding the scope of genome editing with SpG and SpRY variants in rice

The clustered regularly interspaced short palindromic repeats/CRISPR-associated nuclease 9 (CRISPR/Cas9) system,since it was excavated,has been rapidly developed and sparked a revolution in the genome editing field.In principle,CRISPR/Cas9 system relies on the recognition of specific loci on the genome,which is titled the protospacer adjacent motif (PAM).However,the canonical Streptococcus pyogenes Cas9 (SpCas9) nuclease only recognizes NGG or NAG PAMs,rendering an inherent obstacle in amplifying the application of CRISPR/Cas9 technology.In previous work,two main strategies were pursued to eliminate this constraint (Chen et al.,2019):one powerful pathway is mining SpCas9 protein orthologs,such as SaCas9 for NNGRRT PAMs and ScCas9 for NNG PAMs (Xu et al.,2020;Wang et al.,2020);another key approach is to generate SpCas9 variants,such as SpCas9-VQR and VRER for NGA and NGCG PAMs,SpCas9-NG for NG PAMs and xCas9 for NG,GAA and GAT PAMs.So far,although the potential scope of SpCas9 has been expanded in plant research,it is still insufficient for genome-wide arbitrary site targeting and editing.
Charge storage mechanisms of cathode materials in rechargeable aluminum batteries

Rechargeable aluminum batteries (RABs) have attracted great interest as one of the most promising candidates for large-scale energy storage because of their high volumetric capacity,low cost,high safety and the abundance of aluminum.However,compared with the aluminum anodes,the cathode materials face more problems including low specific capacity,relatively sluggish kinetics in most host structures and/or limited cycle lifespan,which pose the major challenge for RABs in further practical applications.During the past years,intensive efforts have been devoted to developing new cathode materials and/or designing engineered nanostructures to greatly improve RABs' electrochemical performances.In addition to nanotechnologybased electrode structure designs,the intrinsic chemical structures and charge storage mechanisms of cathode materials play an equally crucial role,if not more,in revolutionizing the battery performances.This review,here,focuses on current understandings into the charge storage mechanisms of cathode materials in RABs from a chemical reaction point of view.First,the fundamental chemistry,charge storage mechanisms and design principles of RAB cathode materials are highlighted.Based on different ion charge carriers,the current cathode materials are classified into four groups,including Al~(3+)-hosting,AlCl_4~--hosting,AlCl~(2+)/AlCl~(2+)-hosting,and Cl~--hosting cathode materials.Next,the respective typical electrode structures,optimization strategies,electrochemical performances and charge storage mechanisms are discussed in detail to establish their chemistry-structure-property relationships.This review on current understandings of the cathode charge storage mechanisms will lay the ground and hopefully set new directions into the rational design of high-performance cathode materials in RABs,and open up new opportunities for designing new electrolyte systems with respect to the targeted cathode systems.
Molecularly manipulating orientation of hole transporting layers and mitigation of electrical loss for dopant-free CsPbI_2Br solar cells

Organo-lead halide perovskites (OHPs) possess superior optoelectronic properties and have achieved an amazing certified power conversion efficiency (PCE) of 25.5% in perovskite solar cells (PSCs). Recent studies revealed that the organic cations such as methylammonium (MA+) and formamidinium (FA~+) and anions with weak electronegativity such as I- in OHPs were causing instability. The release of gas species, such as CH_3NH_2, CH_3I, NH_3, HI, I_2, HN=CHNH_2, HI, HCN, were observed when OHPs were under heat, illumination, and vacuum stresses, causing device failure. Complete substitution of organic canions with inorganic ones (i.e., cesium) and partial substitution of I- with Br- to prepare CsPbI_xBr_(3-x) is an effective approach to improving device stability. In the last few years, advanced thin-film deposition, defect passivation and interface optimization methods were developed to boost CsPbI_2Br PSCs with over 17% efficiency. However, a large gap between practical and theoretical PCE still exists in the state-of-theart CsPbI_2Br PSCs, largely due to uncontrolled electrical loss.
The role of oxygen vacancies in metal oxides for rechargeable ion batteries

Rechargeable ion batteries are one of the most reliable energy storage technologies for the applications ranging from small portable devices and electric vehicles to renewable energy integration and large-scale stationary energy storage.In the roadmap of developing and understanding new electrode materials for rechargeable ion batteries,oxygen vacancies,known as defects in metal oxides,have shown a high impact on the final electrochemical performance of the oxides.The present review aims to summarise the synthesis methods and characterisation techniques of oxygen vacancies as well as some of the most recent and exciting progress made to understand the role of oxygen vacancies in the electrochemical performance of Li-,Na-,K- and Zn-ion batteries.This review discusses not only the role of oxygen vacancies directly in electrode materials and indirectly in the coating layers on electrode materials,but also the synergistic role of oxygen vacancies interplaying with other contributors such as carbonaceous materials,doping,amorphisation,structural transformation,nanostructuring and functional coating.Finally,perspectives are given to stimulate new ideas and open questions to facilitate the further development of oxygen deficient electrode materials in energy research landscape.
Stationary distributions for two-dimensional sticky Brownian motions: Exact tail asymptotics and extreme value distributions

Sticky Brownian motions can be viewed as time-changed semimartingale reflecting Brownian motions,which find applications in many areas including queueing theory and mathematical finance.In this paper,we focus on stationary distributions for sticky Brownian motions.Main results obtained here include tail asymptotic properties in the marginal distributions and joint distributions.The kernel method,copula concept and extreme value theory are the main tools used in our analysis.
Phosphoinositides: Emerging players in plant salinity stress tolerance

Soil salinity reduces the biodiversity of natural ecosystems and severely limits sustainability and profitability of agricultural production systems. Given the increasing reliance of modern agriculture on irrigation (Liu et al., 2020a), the extent of the soil salinity is only going to increase under current climate trends scenarios. In this context, achieving global food security in the 21st century will be not feasible without developing a salt-tolerant crop germplasm. However, the physiological and genetic complexity of this trait has significantly handicapped progress in the field.
Complexes and complexities: INO80 takes center stage

Chromatin remodeling and transcriptional reprogramming are key mechanisms through which plants respond to environmental challenges. Nucleosomal dynamics associated with the presence/absence (incorporation/eviction) of the histone variant H2A.Z is one of the key chromatin remodeling mechanisms associated with environmental response (Coleman-Derr and Zilberman, 2012). Very recently, some excellent papers (Shang et al., 2021; Willige et al., 2021; Xue et al., 2021) have addressed the role of a less-explored component of this chromatin remodeling—the INO80 complex. Here, we discuss novel insights revealed in these papers and their potential impacts.
The effect of hematoma puncture drainage before decompressive craniectomy on the prognosis of hypertensive intracerebral hemorrhage with cerebral hernia at a high altitude

Purpose: Rapid decompressive craniectomy (DC) was the most effective method for the treatment of hypertensive intracerebral hemorrhage (HICH) with cerebral hernia, but the mortality and disability rate is still high. We suspected that hematoma puncture drainage (PD) + DC may improve the therapeutic effect and thus compared the combined surgery with DC alone. Methods: From December 2013 to July 2019, patients with HICH from Linzhi, Tibet and Honghe, Yunnan Province were retrospectively analyzed. The selection criteria were as follows: (1) altitude ≥1500 m; (2) HICH patients with cerebral hernia; (3) Glascow coma scale score of 4-8 and time from onset to admission ≤3 h; (4) good liver and kidney function; and (5) complete case data. The included patients were divided into DC group and PD + DC group. The patients were followed up for 6 months. The outcome was assessed by Glasgow outcome scale (GOS) score, Kaplan-Meier survival curve and correlation between time from admission to operation and prognosis. A good outcome was defined as independent (GOS score, 4-5) and poor outcome defined as dependent (GOS score, 3-1). All data analyses were performed using SPSS 19, and comparison between two groups was conducted using separate ttests or Chi-square tests. Results: A total of 65 patients was included. The age ranged 34-90 years (mean, 63.00 ± 14.04 years). Among them, 31 patients had the operation of PD + DC, whereas 34 patients underwent DC. The two groups had no significant difference in the basic characteristics. After 6 months of follow-up, in the PD + DC group there were 8 death, 4 vegetative state, 4 severe disability (GOS score 1-3, poor outcome 51.6 %); 8 moderate disability, and 7 good recovery (GOS score 4-5, good outcome 48.4 %); while in the DC group the result was 15 death, 6 vegetative state, 5 severe disability (poor outcome 76.5 %), 4 moderate disability and 4 good recovery (good outcome 23.5 %). The GOS score and good outcome were significantly less in DC group than in PD + DC group (Z = -1.993, p = 0.046; χ~2 = 4.38, p = 0.043). However, there was no significant difference regarding the survival curve between PD + DC group and DC group. The correlation between the time from admission to operation and GOS at 6 months (r = -0.41, R~2 = 0.002, p = 0.829) was not significant in the PD + DC group, but significant in the DC group (r = -0.357, R~2 = 0.128, p = 0.038). Conclusion: PD + DC treatment can improve the good outcomes better than DC treatment for HICH with cerebral hernia at a high altitude.
Order Reduced Schemes for the Fourth Order Eigenvalue Problems on Multi-Connected Planar Domains

In this paper, we study the order reduced finite element method for the fourth order eigenvalue problems on multi-connected planar domains.Particularly, we take the biharmonic and the Helmholtz transmission eigenvalue problems as model problems, present for each an equivalent order reduced formulation and a corresponding stable discretization scheme, and present rigorous theoretical analysis.The schemes are readily fit for multilevel correction algorithms with optimal computational costs.Numerical experiments are given for verifications.