mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
High-voltage Ride Through Strategy for DFIG Considering Converter Blocking of HVDC System

This paper presents a P-Q coordination based highvoltage ride through (HVRT) control strategy for doubly fed induction generators (DFIGs) based on a combined Q-V control and P-V de-loading control. The active/reactive power injection effect of DFIG on transient overvoltage is firstly analyzed and the reactive power capacity evaluation of DFIG considering its de-loading operation is then conducted. In the proposed strategy, the reactive power limit of DFIG can be flexibly extended during the transient process in coordination with its active power adjustment. As a result, the transient overvoltage caused by DC bipolar block can be effectively suppressed. Moreover, key outer loop parameters such as Q-V control coefficient and deloading coefficient can be determined based on the voltage level of point of common coupling (PCC) and the available power capacity of DFIG. Finally, case studies based on MATLAB/Simulink simulation are used to verify the effectiveness of the proposed control strategy.
A Review on Plug-in Electric Vehicles: Introduction, Current Status, and Load Modeling Techniques

Plug-in electric vehicle (PEV) load modeling is very important in the operation and planning studies of modern power system nowadays. Several parameters and considerations should be taken into account in PEV load modeling, making it a complex problem that should be solved using appropriate techniques. Different techniques have been introduced for PEV load modeling and each of them has individual specifications and features. In this paper, the most popular techniques for PEV load modeling are reviewed and their capabilities are evaluated. Both deterministic and probabilistic methods are investigated and some practical and theoretical hints are presented. Moreover, the characteristics of all techniques are compared with each other and suitable methods for unique applications are proposed. Finally, some potential research areas are presented for future works.
Economic Optimization Dispatching Strategy of Microgrid for Promoting Photoelectric Consumption Considering Cogeneration and Demand Response

A system combining photovoltaic power generation and cogeneration is proposed to improve the photoelectric absorption capacity. First, a time-of-use price strategy is adopted to guide users to change their electricity consumption habits for participation in the demand response, and a demand response model is established. Then, particle swarm optimization (PSO) is used with the aim of minimizing the operation cost of the microgrid to achieve economic dispatching of the microgrid. This considers power balance equation constraints, unit operation constraints, energy storage constraints, and heat storage constraints. Finally, the simulation results show the improved level of photoelectric consumption using the proposed scheme and the economic benefits of the microgrid.
Automatic Generation Control of Multi-area Power System with Network Constraints and Communication Delays

Newly proposed power system control methodologies combine economic dispatch (ED) and automatic generation control (AGC) to achieve the steady-state cost-optimal solution under stochastic operation conditions. However, a real power system is subjected to continuous demand disturbance and system constraints due to the input saturation, communication delays and unmeasurable feed-forward load disturbances. Therefore, optimizing the dynamic response under practical conditions is equally important. This paper proposes a state constrained distributed model predictive control (SCDMPC) scheme for the optimal frequency regulation of an interconnected power system under actual operation conditions, which exist due to the governor saturation, generation rate constraints (GRCs), communication delays, and unmeasured feed-forward load disturbances. In addition, it proposes an algorithm to handle the solution infeasibility within the SCDMPC scheme, when the input and state constraints are conflicting. The proposed SCDMPC scheme is then tested with numerical studies on a three-area interconnected network. The results show that the proposed scheme gives better control and cost performance for both steady state and dynamic state in comparison to the traditional distributed model predictive control (MPC) schemes.
How to safeguard children's mental health during emergencies

During their lifetime, people will inevitably encounter a variety of emergencies, ranging from earthquakes, floods, fires, terrorist attacks, and epidemics (such as the currently spreading novel coronavirus disease 2019),to the loss of loved ones, traffic accidents, conflicts with classmates, and physical illnesses. Due to the suddenness and unpredictability of these events, they often have different degrees of influence on the individual's mental state and can even result in a psychological crisis. As a special group, children are more vulnerable to intrusion and influence because their mental and physical development is not yet mature. If their psychological response to a crisis is not managed promptly and effectively, it can seriously affect their development in terms of mental health and even have long-term effects throughout their lifetime. This article will introduce the current state of development of methods to safeguard children's mental health in China and describe some standard family intervention methods.
Distributionally Robust Optimal Reactive Power Dispatch with Wasserstein Distance in Active Distribution Network

The uncertainties from renewable energy sources (RESs) will not only introduce significant influences to active power dispatch, but also bring great challenges to the analysis of optimal reactive power dispatch (ORPD). To address the influence of high penetration of RES integrated into active distribution networks, a distributionally robust chance constraint (DRCC)-based ORPD model considering discrete reactive power compensators is proposed in this paper. The proposed ORPD model combines a second-order cone programming (SOCP) - based model at the nominal operation mode and a linear power flow (LPF) model to reflect the system response under certainties. Then, a distributionally robust optimization (WDRO) method with Wasserstein distance is utilized to solve the proposed DRCC-based ORPD model. The WDRO method is data-driven due to the reason that the ambiguity set is constructed by the available historical data without any assumption on the specific probability distribution of the uncertainties. And the more data is available, the smaller the ambiguity would be. Numerical results on IEEE 30-bus and 123-bus systems and comparisons with the other three-benchmark approaches demonstrate the accuracy and effectiveness of the proposed model and method.
Knowledge-oriented modeling for influencing factors of battle damage in military industrial logistics:An integrated method

Modeling influencing factors of battle damage is one of essential works in implementing military industrial logistics simulation to explore battle damage laws knowledge. However, one of key challenges in designing the simulation system could be how to reasonably determine simulation model input and build a bridge to link battle damage model and battle damage laws knowledge. In this paper, we propose a novel knowledge-oriented modeling method for influencing factors of battle damage in military industrial logistics, integrating conceptual analysis, conceptual modeling, quantitative modeling and simulation implementation. We conceptualize influencing factors of battle damage by using the principle of hierarchical decomposition, thus classifying the related battle damage knowledge logically. Then, we construct the conceptual model of influencing factors of battle damage by using Entity-Relationship approach, thus describing their interactions reasonably. Subsequently, we extract the important influencing factors by using social network analysis, thus evaluating their importance quantitatively and further clarifying the elements of simulation. Finally, we develop an agent-based military industry logistics simulation system by taking the modeling results on influencing factors of battle damage as simulation model input, and obtain simulation model output, i.e., new battle damage laws knowledge, thus verifying feasibility and effectiveness of the proposed method. The results show that this method can be used to support human decision-making and action.
Hybrid Multiple Access and Service-Oriented Resource Allocation for Heterogeneous QoS Provisioning in Machine Type Communications

Non-orthogonal multiple access (NOMA) has emerged as one important enabling technology for future wireless communications and services, including machine type communication (MTC). Unfortunately, supporting diverse MTC services and massive connectivity is still challenging due to the very different service requirements, scarce radio resources, limited battery capacity of MTC devices, as well as rapidly changing network conditions. In this paper, a hybrid-multipleaccess (HMA) scheme for service-oriented resource allocation scheme is proposed in supporting diverse MTC services for resource constrained devices and networks. In the proposed scheme, HMA allows MTC devices to choose a suitable type of multiple access technique according to their channel conditions, power constraints, and quality of service (QoS) requirements. To support service-oriented resource allocation, the physical network is firstly sliced into several virtualized networks based on QoS requirements and hardware conditions of MTC devices. A novel utility function integrating network performance and the power consumption in MTC devices is proposed. Furthermore, the resource allocation problem is formulated as an optimization problem to maximize the different utility functions under constraints of user QoS requirements and maximum transmitted power. To improve computational capacity as well as reduce the operational latency, a cloud-edge collaborative scheme is further designed to share the computation loads between the cloud and edge. Simulation results demonstrate the proposed service-oriented resource allocation scheme is effective and illustrate that the proposed hybrid multiple access method provides better performance than NOMA in terms of effective energy efficiency.
Analytical investigation of γN→N*,Δ* transition helicity amplitudes

We study the structure of nonstrange baryons by analytically calculating the electromagnetic transition helicity amplitudes of the nucleon and Δ resonances.We employ an improved hypercentral constituent quark model and obtain the corresponding eigenenergies and eigenfunctions in closed forms.Then,we calculate the transverse and longitudinal helicity amplitudes for nucleon and Δ resonances.The comparison of evaluated observables and experimental data indicates good agreement between the proposed model and available data.
Formation region of emitted α and heavier particles inside radioactive nuclei

We investigate the formation distance (R_0) from the center of the radioactive parent nucleus at which the emitted cluster is most probably formed.The calculations are performed microscopically starting with the solution to the time-independent Schrodinger wave equation for the cluster-core system,using nuclear potentials based on the Skyrme-SLy4 nucleon-nucleon interactions and folding Coulomb potential,to determine the incident and transmitted wave functions of the system.Our results show that the emitted cluster is mostly formed in the pre-surface region of the nucleus,under the effect of Pauli blocking from the saturated core density.The deeper α-formation distance inside the nucleus allows less preformation probability and indicates a more stable nucleus for a longer half-life.Furthermore,the α-particle tends to be formed at a slightly deeper region inside the nuclei,with larger isospin asymmetry,and in the closed shell nuclei.Regarding the heavy clusters,we observed that the formation distance of the emitted clusters heavier than α-particle increased via increasing the isospin asymmetry of the formed cluster rather than by increasing its mass number.The partial half-life of a certain cluster-decay mode increased with increase of either the mass number or the isospin asymmetry of the emitted cluster.
An experimental study of the isolation performance of trenches on ground-borne vibration from underground tunnels

This paper presents a study of the isolation performance of trenches on train-induced ground-bore vibration from underground tunnels. A series of model tests was conducted to perform the study. Both train loads and sinusoidal sweep loads were applied to the model tunnel invert by a shaker. The response of the soil at the surface of the ground was measured by accelerometers. Three types of isolation trenches, i.e., an open trench, an expanded Polystyrene (EPS)-filled trench, and a Duxseal-filled trench, were modelled in the experiment. The results showed that the open trench and the EPS-filled trench increased the dynamic response of the surface soil in front of the trench, but the Duxseal-filled trench had little effect on the dynamic response of the soil on the surface in this area. Although all three types of isolation trenches reduced the response of the soil behind the trench, the open trench and the Duxseal-filled trench were clearly more effective. The test results also showed that, as the excitation frequency increased, the vibration isolation trench was more effective in the near field. The effects of the width, depth, and position of an open trench on isolation performance also were examined in the tests.
痛风患者中医证型及特点分析

目的探讨痛风患者中医证型及其特点。方法回顾分析2018年1月至2019年1月至浙江中医药大学附属第二医院就诊的痛风患者80例,由2名专业医师对患者进行辨证分型,收集患者一般资料、临床表现及实验室指标,归纳总结痛风中医证型及分布特点。结果研究纳入80例痛风患者,排除辨证分型不统一患者2例,剩余78例,其中男性76例(97%),年龄(43.49 ±16.64)岁,女性2例(3%),年龄(70.50 ±14.85)岁,痛风患者发病年龄以中青年为主;发病部位以膝关节、第一跖趾关节多见。中医证型中以湿热蕴结证最为多见(56.41%);肝肾阴虚证患者病程高于其他证型(P< 0.05);湿热蕴结证血尿酸水平高于其他三种证型(P <0.05);肝肾阴虚证甘油三酯水平高于其他三种证型(P <0.05)。结论痛风好发于中年男性,以湿热蕴结证最为常见,肝肾阴虚证病程高于其他证型,血尿酸与甘油三酯水平在一定程度上有助于临床辨证分型。
基于网络药理学的黄精-党参联合治疗2型糖尿病作用机制研究

目的探讨黄精-党参联合治疗2型糖尿病(T2DM)的作用机制。方法借助中药系统药理学分析平台(TCMSP)检索黄精-党参的化学成分和作用靶点,通过GenCards数据库查询与T2DM相关的基因。通过Uni Prot数据库查询靶点对应的黄精-党参的化学成分作用靶点基因名,R软件提取药物靶点和疾病靶点交集,Cytoscape 3.7.1软件构建化合物-靶点网络、STRING在线软件构建蛋白相互作用(PPI)网络,最后通过R软件进行基因本体(GO)功能富集分析和基于京都基因与基因组百科全书(KEGG)通路富集分析,研究其作用机制。结果化合物-靶点网络包含23个化合物和相应靶点76个,PPI网络包含76个蛋白,关键蛋白涉及AKT1、MAPK1、JUN、IL6、MApK14等,GO功能富集分析得到GO条目95个(P<0.05),KEGG通路富集筛选得到144条信号通路(P <0.05),涉及PI3K - Akt信号通路、胰岛素抵抗通路等。结论黄精-党参中的活性成分主要通过协调炎症信号通路、胰岛素相关通路、抗氧化相关信号通路等协同治疗T2DM。
生命印记与地球年轮———破译叠层石

地球在其漫长的演化过程中,形成了丰富多彩的岩石,这些岩石记录了地球演化的历史。而在这些岩石形成的过程中,也伴随着生命的演化进程,其中有一类岩石被称为“微生物岩”,顾名思义,就是说它们的形成与地球上的微生物密切相关。微生物岩中最具代表性的一类岩石叫叠层石。科学家在大约37 Ga前的叠层石里,已切实找到了生命存在的证据,说明叠层石的形成的确与地球早期生命有关。科学家们通过研究确定了叠层石的形成过程:蓝细菌(蓝藻)是地球上最早的生命形式,它们通过光合作用,为地球孕育其他生命创造出了富含氧气的大气环境,而它们就蕴藏在当时的海洋环境中,附着在潮上和潮间滩涂或潮下浅海海底,与海水中沉淀的碳酸盐岩软泥、泥质细小颗粒等一层层堆叠下来,形成了今天所见的层层叠叠、形态各异的特殊的碳酸盐岩———叠层石。
Remaining useful life prediction of lithium-ion batteries using a fusion method based on Wasserstein GAN

Lithium-ion batteries are the main power supply equipment in many fields due to their advantages of no memory,high energy density,long cycle life and no pollution to the environment.Accurate prediction for the remaining useful life(RUL)of lithium-ion batteries can avoid serious economic and safety problems such as spontaneous combustion.At present,most of the RUL prediction studies ignore the lithium-ion battery capacity recovery phenomenon caused by the rest time between the charge and discharge cycles.In this paper,a fusion method based on Wasserstein generative adversarial network(GAN)is proposed.This method achieves a more reliable and accurate RUL prediction of lithium-ion batteries by combining the artificial neural network(ANN)model which takes the rest time between battery charging cycles into account and the empirical degradation models which provide the correct degradation trend.The weight of each model is calculated by the discriminator in the Wasserstein GAN model.Four data sets of lithium-ion battery provided by the National Aeronautics and Space Administration(NASA)Ames Research Center are used to prove the feasibility and accuracy of the proposed method.
Multi-stage attack weapon target allocation method based on defense area analysis

For better reflecting the interactive defense between targets in practical combat scenarios,the basic weapon-target allocation(WTA)framework needs to be improved.A multi-stage attack WTA method is proposed.First,a defense area analysis is presented according to the targets' positions and the radii of the defense areas to analyze the interactive coverage and protection between targets' defense areas.Second,with the coverage status and coverage layer number,a multi-stage attack planning method is proposed and the multi-stage attack objective function model is established.Simulation is conducted with interactive defense combat scenarios,the traditional WTA method and the multi-stage WTA method are compared,and the objective function model is validated with the Monte-Carlo method.The results suggest that if the combat scenario involves interactive coverage of targets' defense areas,it is imperative to analyze the defense areas and apply the multi-stage attack method to weakening the target defense progressively for better combat effectiveness.
Global City Hypotheses and Social Polarization:Empirical Analysis of Beijing,Shanghai,and Guangzhou

Globalization can promote the flow of production factors across countries and regions.Developing “global cities” in China is conducive to enhancing China's international competitiveness and participation in the world's economic activities.Relevant theories reveal that globalization is of great significance to urban socio-spatial restructuring,and the social polarization or professionalization issues brought by “global cities” have been controversial.Based on the data from the statistical yearbooks of Beijing,Shanghai,and Guangzhou,this study tries to test the global city hypothesis through the analysis on these three “global cities” in China.The study finds that Beijing and Shanghai have shown certain social polarization characteristics in the process of social differentiation,while Guangzhou has not.The results can provide scientific support for the formulation of urban management and household registration policies in China.
先天性传染性软疣1例

MC临床表现通常为散在,无规律性分布的珍珠状丘疹,顶端可有脐凹,皮损多见于躯干和四肢,成年人生殖器部位也较常见。但是,先天性MC发生部位和皮损分布有一定规律,已报道的17例先天性MC,发生在头皮13例,其中7例多发性皮损呈环状或半环状分布,其余为孤立或簇集分布;发生在大腿、足和肩膀各1例,均为单发皮损;发生在骶尾1例,皮损多发呈线状排列,这与本例MC发生部位和皮损排列方式一致。线状分布的先天性MC需与其他先天性线状排列的皮肤病(如线状疣状痣、皮脂腺痣)鉴别。本例病理可见软疣小体,因此可除外其他诊断。由于MCV具有传染性,随着患病时间增加,在身体其他部位出现特征性皮损也有助于先天性MC诊断。
Dexmedetomidine Attenuates High Glucose-induced HK-2 Epithelial-mesenchymal Transition by Inhibiting AKT and ERK

Objective To explore the protective effects of dexmedetomidine (Dex) against high glucose-induced epithelial-mesenchymal transition in HK-2 cells and relevant mechanisms.Methods HK-2 cells were exposed to either glucose or glucose+Dex for 6 h.The production of ROS,morphology of HK-2 cells,and cell cycle were detected.Moreover,the expression of AKT,p-AKT,ERK,p-ERK,PI3K,E-Cadherin,Claudin-1,and α-SMA were determined and compared between HK-2 cells exposed to glucose and those exposed to both glucose and Dex with or without PI3K/AKT pathway inhibitor LY294002 and ERK pathway inhibitor U0126.Results Compared with HK-2 cells exposed to high level of glucose,the HK-2 cells exposed to both high level of glucose and Dex showed:(1) lower level of ROS production;(2) cell morphology was complete;(3) more cells in G1 phase;(4) lower expression of p-AKT,p-ERK and α-SMA,higher expression of ECadherin and Claudin-1.PI3K/AKT inhibitor LY294002 and ERK inhibitor U0126 decreased the expression of p-AKT,p-ERK and α-SMA,and increased the expression of E-Cadherin and Claudin-1.Conclusion Dex can attenuate high glucose-induced HK-2 epithelial-mesenchymal transition by inhibiting AKT and ERK.
Association between Chinese Famine Exposure and the Risk of Overweight/Obesity and Abdominal Obesity in Laterlife: A Cross-sectional Study

This study aimed to examine the association between famine exposure in different stages of life and the risk of overweight/obesity and abdominal obesity in laterlife. A total of 12,458 participants were categorized into non-exposure and four direct exposures, including fetal, childhood, adolescence, and adult exposure. Only risk of being overweight or obesity in adolescence exposure [odds ratio (OR), 1.45; 95% confidence interval (CI), 1.08–1.94] was significantly higher than in non-exposure. Childhood (OR, 1.27; 95% CI, 1.05–1.54) and adolescence (OR, 1.53; 95% CI, 1.15–2.05) exposures had significantly an increased risk of abdominal obesity compared with non-exposure. Additionally, different famine severity exposures had different influences on the development of overweight/obesity and abdominal obesity. Famine exposure in adolescence, which was a behavior formative period, can increase the risk of overweight/obesity and abdominal obesity in adulthood, specifically in famine severely affect area.
Clinical application of Chinese Nanjing persistent vegetative state scale

Background: It is a challenge to characterize the consciousness level of patients with severe disturbance of consciousness and predict their prognosis effectively for Chinese doctors. We aimed to investigate the psychometric property and the diagnostic practicality of severe disturbance of consciousness by Chinese Nanjing persistent vegetative state scale (CNPVSS) which was first set up in 1996 and modified in 2001 and 2011. Methods: The concurrent validity, inter-rater consistency and diagnostic accuracy of CNPVSS and Chinese version of coma recovery scale-revised (CRS-R) were investigated by assessment of 380 patients with severe disorders of consciousness. Results: Total scores of the CNPVSS were correlated significantly with that of the CRS-R, indicating acceptable concurrent validity. Sub-scale analysis showed moderate to high inter-rater reliability and test-retest reliability. CNPVSS was superior to CRS-R on the diagnosis sensitivity. The CNPVSS was able to distinguish 65 patients in emergence from minimal consciousness state who were misclassified as in minimal consciousness state (MCS) by the CRS-R, and it could also distinguish two patients in MCS who were misclassified as in vegetative state by the CRS-R. Conclusion: The CNPVSS is an appropriate measurement and is sensitive to distinguish the MCS patients from the VS patients.
肝硬化食管胃静脉曲张破裂出血急诊胃镜下止血治疗失败的危险因素分析

急诊胃镜下止血是治疗食管胃静脉曲张破裂出血的有效方法,止血失败的患者预后差,早期识别止血治疗失败的危险因素尤为重要。本研究通过回顾性分析比较急诊胃镜下止血治疗失败与止血成功的肝硬化食管胃静脉曲张破裂出血患者的临床资料,探究急诊胃镜下止血治疗失败的危险因素。结果表明凝血酶原活动度、血红蛋白降低值、Child-Pugh分级、门静脉栓子形成是肝硬化食管胃静脉曲张破裂出血患者急诊胃镜下止血治疗失败的独立危险因素(P<0.05)。因此,在急诊胃镜检查治疗前应对上述因素进行合理评估,以提高止血成功率。
BOUNDEDNESS OF MULTILINEAR LITTLEWOOD-PALEY OPERATORS ON AMALGAM-CAMPANATO SPACES

In this paper, we consider the boundedness of multilinear Littlewood-Paley operators which include multilinear g-function, multilinear Lusin's area integral and multilinear Littlewood-Paley g_λ~*-function. Furthermore, norm inequalities of the above operators hold on the corresponding Amalgam-Campanato spaces.