The Tension Cosmology, Largest Cosmic Structures and Explosions of Supernovae from SST

Here, using the Scale-Symmetric Theory (SST) we explain the cosmological tension and the origin of the largest cosmic structures. We show that a change in value of strong coupling constant for cold baryonic matter leads to the disagreement in the galaxy clustering amplitude, quantified by the parameter S8. Within the same model we described the Hubble tension. We described also the mechanism that transforms the gravitational collapse into an explosion—it concerns the dynamics of virtual fields that lead to dark energy. Our calculations concern the Type Ia supernovae and the core-collapse supernovae. We calculated the quantized masses of the progenitors of supernovae, emitted total energy during explosion, and we calculated how much of the released energy was transferred to neutrinos. Value of the speed of sound in the strongly interacting matter measured at the LHC confirms that presented here model is correct. Our calculations show that the Universe is cyclic.

基于HR-MRI分析MCAS患者血管管壁特征与卒中的关系

目的基于三维高分辨率磁共振(HR-MRI)分析大脑中动脉粥样硬化性狭窄(MCAS)患者血管管壁特征与卒中的关系。方法回顾性分析2020年4月~2023年4月我院收治的100例MCAS患者临床资料,根据病变血管是否引发卒中情况,将其分为责任血管组(引发卒中的大脑中动脉,n=100)和非责任血管组(对侧未引发卒中的大脑中动脉,n=77),比较两组大脑中动脉斑块分布情况、斑块类型、斑块强化类型、斑块强化程度及管壁参数。结果100例MCAS患者中共发现227个斑块,其中责任血管组中有106个,非责任血管组中有121个;两组均以前壁斑块最为常见,但责任血管组上壁斑块所占比例(26.42%)明显高于非责任血管组(14.88%)(P<0.05)。责任血管组不规则斑块所占比例(63.21%)明显高于非责任血管组(43.80%)(P<0.05)。责任血管组偏心性强化斑块及高度强化斑块所占比例(84.91%、53.77%)明显高于非责任血管组(30.58%、8.26%),无强化和轻度强化斑块所占比例(7.55%、17.92%)明显低于非责任血管组(16.53%、43.80%),差异均有统计学意义(P<0.05)。责任血管组管腔狭窄程度、最大管壁厚度、管壁面积及斑块负荷均明显大于非责任血管组(P<0.05)。结论HR-MRI可清晰显示MCAS患者血管管壁特征,有助于评估斑块稳定性和识别责任血管,对预防卒中的发生具有一定参考价值。

第一大股东持股与股票市场操纵:加剧还是抑制?

股东治理是股票市场运行的基石。本文以2011—2021年沪深A股非金融上市公司为研究对象,基于股票三秒切片高频交易数据检验了第一大股东持股对股票市场操纵的影响。研究发现,第一大股东持股能够加剧股票市场操纵,缓解内生性问题后结论稳健。影响机制检验表明,第一大股东持股比例增加会加剧大股东掏空效应、降低企业信息透明度、抑制股票流动性,从而促进股票市场操纵行为。进一步分析发现,在非国有企业中,在分析师关注度低、两职合一、独立董事占比低等弱监督制衡机制的环境下,第一大股东持股的影响更加显著。本文建议通过构建适度制衡的股权结构、加大股东监督力度、提升信息披露质量、完善市场操纵监控体系等措施推动我国资本市场高质量发展。

具有最大Aα-特征值的符号完全图

符号图Σ=(G,σ)由它的底图G=(V,E)与符号函数σ∶E→{-1,1}组成.设α∈[0,1],Belardo定义符号图Aα-矩阵为:A_(α)(Σ)=αD(G)+(1-α)A(Σ),其中A(Σ)是符号图Σ的邻接矩阵,D(G)是G的度对角矩阵.设K n表示n阶完全图,T表示树.设(K_(n),H^(-))表示负边导出子图是H的符号完全图.当0.5<α<1时,确定了符号图(K_(n),T^(-))的最大Aα-特征值达到最大时T的结构.

慢性前庭综合征的机器学习分类方法

目的 通过最大Lyapunov指数(the largest Lyapunov exponents,LLE)计算慢性前庭综合征(chronic vestibular syndrome,CVS)患者运动的非线性特征,并通过机器学习算法验证分类模型的有效性。方法 使用三维运动捕捉系统捕捉受试者的关节运动轨迹,通过LLE判断混沌态,计算混沌轨迹的特征作为输入,采用ID3决策树、Adaboost、C45决策树、贝叶斯分类、朴素贝叶斯、支持向量机7种分类器进行分类。结果 共有16个关节点的17组轨迹处在混沌态,实验组运动轨迹的平均能量、增强波长、峰度表现出显著性差异(P<0.05),ID3决策树分类器表现出了最优性能,预测精度、召回率、F_(1)分数均为100%。结论 混沌特征可能包含了CVS患者更多的个性差异,能够提高机器学习算法识别的准确性。研究结果可为CVS患者的早期识别和运动康复提供参考。

Spatio-temporal evolution analysis of landscape pattern and habitat quality in the Qinghai Province section of the Yellow River Basin from 2000 to 2022 based on InVEST model

Habitat quality is an important indicator for evaluating the quality of ecosystem.The Qinghai Province section of the Yellow River Basin plays an important role in the ecological protection of the upper reaches of the Yellow River Basin.To comprehensively analysis the alterations of habitat quality in the Qinghai Province section of the Yellow River Basin,this study utilized the Integrated Valuation of Ecosystem Services and Tradeoffs(InVEST)model to calculate the habitat quality index and analyze the spatio-temporal variation characteristics of habitat quality in the study area from 2000 to 2022,and calculated seven landscape pattern indices(number of patches,patch density,largest patch index(LPI),landscape shape index(LSI),contagion index(CONTAG),Shannon diversity index,and Shannon evenness index)to research the variation of landscape pattern in the study area.The results showed that the number of patches,patch density,LPI,LSI,Shannon diversity index,and Shannon evenness index increased from 2000 to 2022,while the CONTAG decreased,indicating that the landscape pattern in the Qinghai Province section of the Yellow River Basin changed in the direction of distribution fragmentation,shape complexity,and heterogeneity.The average value of the habitat quality index in the Qinghai Province section of the Yellow River Basin from 2000 to 2022 was 0.90.Based on the value of habitat quality index,we divided the level of habitat quality into five categories:lower(0.00-0.20),low(0.20-0.40),moderate(0.40-0.60),high(0.60-0.80),and higher(0.80-1.00).Most areas were at the higher habitat quality level.The lower habitat quality patches were mainly distributed in Longyang Gorge and Yellow River-Huangshui River Valley.From 2000 to 2022,the habitat quality in most areas was stable;the increase areas were mainly distributed in Guinan County,while the decrease areas were mainly distributed in Xining City,Maqen County,Xinghai County,Qumarleb County,and Darlag County.To show the extent of habitat quality variation,we calculated Sen index.The results showed that the higher habitat quality area had a decrease trending,while other categories had an increasing tendency,and the decreasing was faster than increasing.The research results provide scientific guidance for promoting ecological protection and high-quality development in the Qinghai Province section of the Yellow River Basin.

Lüroth展式中最大数字例外集的Hausdorff维数

对任意的x∈(0,1),记x的Lüroth展式为x=[d_(1)(x),d_(2)(x),⋯,d_(n)(x),⋯].记前n个数字中的最大数字为L_(n)(x)=max{d_(1)(x),⋯,d_(n)(x)},对任意实数0<α<β<∞,该文刻画了集合Fϕ(α,β)={x∈(0,1):lim infn→∞Ln(x)ϕ(n)=α,lim supn→∞Ln(x)ϕ(n)=β},的Hausdorff维数,其中ϕ(n)=n^(γ)(γ>0)或者e^(nγ)(γ>0).该结论补充了文献[13]的结果.类似地,该文还考虑了Lüroth展式中数字部分和的相应例外集的Hausdorff维数.

一般指数帕累托分布下最大顺序统计量的比较

本文研究了基于齐次指数或者异质指数帕累托分布下样本的最大顺序统计量的随机比较问题,给出了当总体分布关于参数存在某些序条件下最大顺序统计量之间随机比较的一些充分条件.

高比例风电系统宽频振荡紧急控制策略研究

宽频振荡紧急控制是保障风电系统安全运行的“兜底”措施之一。由于风电系统非线性强度大及运行工况多变,难以建立宽频振荡在线风险评估的解析模型。为此,提出了基于数据驱动的宽频振荡风险在线评估方法及紧急控制策略。首先,设计了能够应对宽频振荡多模态和时变特征的宽频相量检测算法,为后续宽频振荡特征评估提供数据支撑;其次,利用最大李雅普诺夫指数作为宽频振荡动态演化趋势的量化指标,并根据风电机组模态阻抗的负电阻效应在线辨识宽频振荡源;然后,融合宽频振荡特征辨识结果,提出宽频振荡风险在线评估策略,进一步将评估结果应用于宽频振荡紧急控制;最后,通过RTDS硬件在环平台验证所提方法的有效性和可靠性。

基于多指标交互的加权时序网络节点重要性

时序网络中的重要节点评估一直是社交网络领域中的热门话题,在病毒传播、信息挖掘等方面有着诸多应用。现有的算法虽然考虑到节点的邻居信息对节点产生的影响,但建模时仅仅考虑节点是否存在关系,对于链接强度的考虑不够全面。针对此问题,从时间层面去考虑节点链接强度,提出一种新的层内邻接矩阵。同时,综合考虑节点自身的邻居和跨层节点的公共邻居来衡量层间耦合关系,提出多指标交互算法;其次,构建加权超邻接模型(WSAM);最后,通过计算时序网络中每个时间层节点的特征向量中心性来评估时序网络中节点的重要性。实验结果表明,TWCR算法在时序最大连通分量、网络性能、容错性三个方面优于SAM、SSAM和WPA方法。

南京市轨道交通网络抗毁性及韧性研究

基于网络拓扑化方法Space L构建了轨道交通网络拓扑结构模型,在用UCINET对网络特征进行分析的基础上,选取最大连通子图比例以及整体网络效率为指标对轨道交通网络抗毁性进行分析;综合分析节点的属性值,在采取变异系数法定权的基础上,使用TOPSIS法对节点重要度进行排序;通过摧毁单个重要度较高的节点分析网络韧性,采用指标排序恢复策略来恢复网络,从而得出轨道交通网络的平均韧性值。基于此建立的模型,对南京市2022年的轨道交通网络的抗毁性和韧性进行了分析,发现度值高的节点比其他指标对韧性影响更大,优先修复度值最大的节点会使得网络效率上升幅度最大,优先修复接近中心性最大的节点对网络效率的影响较小。

Trend Prediction Method Based on the Largest Lyapunov Exponent for Large Rotating Machine Equipments

In order to predict electromechanical equipments＇ nonlinear and non-stationary condition effectively, max Lyapunov exponent is introduced to the fault trend prediction of large rotating mechanical equipments based on chaos theory. The predict method of chaos time series and two methods of proposing f and F are dis- cussed. The arithmetic of max prediction time of chaos time series is provided. Aiming at the key part of large rotating mechanical equipments-bearing, used this prediction method the simulation experiment is carried out. The result shows that this method has excellent performance for condition trend prediction.

The World＇s Largest Conglomerate Type Oilfield Has Been Discovered in the Junggar Basin of China

The Junggar Basin in the northern part of Xinjiang is the second largest inland basin in China. It is located between the Altai and Tianshan Mountains, which is bounded by the Junggar bounded Mountain in the northwest, the Altai Mountains in the northeast and the North Tianshan Mountains in the south. It belongs to a triangular close inland basin, and extends 700 km in EW and 370 km in NS, covering an area of 38x104 km2. The elevation is about 400 m, high in the east （about 1000 m） and low in the west. The central basin is the Guerbantonggute desert, which accounts for 36.9% of the total basin area.

Discovery of the largest Carboniferous manganese deposit in Longtou-Limiao,central Guangxi,China

1.Objective The Nandan-Yizhou faulting basin,which is located in Longtou-Limiao,Guangxi,is in the southern margin of the Yangtze Block,the depression zone of south Hunan and north Guangxi.It is a carbonate Manganese (Mn)ore deposit in the Baping Group,where occurs the Nongzhu large Mn deposit in a 100 km long anticlinorium with great Mn resource potential (Fig.1).

A Retrospective Cohort Mortality Study in Jinchang,the Largest Nickel Production Enterprise in China

Nickel is an essential trace metal used in the occupational setting, resulting in both occupational and nonoccupational exposures to individuals at varying levels. Exposure to nickel has been associated with several toxicities and the International Agency for Research on Cancer has concluded that there is sufficient evidence in humans associating exposure to nickel compounds with risk of lung cancer and sinonasal cancer. This study confirmed a significant excess of mortality from diseases of the lung including silicosis, lung cancer, and cor pulmonale among workers involved in nickel mining or smelting in China.

The World's Largest Soda-Niter Ore Intensive Region Found in the Turpan–Hami Basin

The Xinjiang Geology and Mineral Resources Exploration and Development Bureau have conducted a detailed investigation project of the Xigobi soda-niter deposit in Hami, Xinjiang Province, which was completed at the end of 2011. The project put much emphasis on research of soda-niter mineralization rules, stratum classification, ore-forming

China's Largest Granite-Type Gas Field was Discovered in Qinghai——The Inorganic Theory has Aroused Attention again

A growing number of oil and gas reservoirs have been discovered in granite and metamorphic crystallized rock areas. Statistics show that, about 157 oil and gas fields were found in crystallized bedrocks, with oil reserves of 5048x 10^8 t, and gas reserves of 2681x10^8m3. Among the discovered industrial oil and gas fields hosted in crystallized rocks, most occurred in granite rocks, occupying 40% in quantity and 75% in reserves, followed by those hosted in mafic and ultra-mafic rocks （about 3%）, and then tbllowed by those in volcanic rocks and metamorphic rocks.

Discovery of the World's Second Largest Molybdenum Deposit in the Shapinggou Area,Jinzhai County,Anhui Province

In the year of 2011, a superlarge molybdenum deposit was discovered in the Shapinggou area, Jinzhai county, Anhui Province by the Bureau of Geology and Mineral Exploration of Anhui Province, with its reserve more than 2.2 million ton, just next to the Klimax molybdenum deposit （〉3.3 million ton） in Colorado. It has ranged the world＇s second largest molybdenum deposit, with potential economic value up to 100 billion dollars.

Short-Term Forecasting of Urban Water Consumption Based on the Largest Lyapunov Exponent

An approach for short-term forecasting of municipal water consumption was presented based on the largest Lyapunov exponent of chaos theory. The chaotic characteristics of time series of urban water consumption were examined by means of the largest Lyapunov exponent and correlation dimension. By using the largest Lyapunov exponent a short-term forecasting model for urban water consumption was developed, which was compared with the artificial neural network (ANN) approach in a case study. The result indicates that the model based on the largest Lyapunov exponent has higher prediction precision and forecasting stability than the ANN method, and its forecasting mean relative error is 9.6% within its maximum predictable time scale while it is 60.6% beyond the scale.

Largest in China Optical-fiber-cable Enterprise

Wuhan Changphi Opto-fiber-cable Company,Ltd.was put into production recently.On theceremony it is said,since this company went into operation,China will set up the long-distancecommunication line with opto-fiber-cable produced at home.The output of this company in thisyear is expected to be more than 55 000 km and 5 000 km for optical fibers and cables respectively.