Practical Method for Determining All the Minimum Solutions of Fuzzy Matrix Equation and Transitive Closure of Fuzzy Relation

In this paper,the new theory frame and practical methhod for determining all the minimum solutions of Fuzzy matrix equation and transitive closure of Fuzzy relation is described,and it has been carried out on the miero-computer quickly and accurately.

THE MAPPING RELATION AMONG SOLUTION OF SOME NONLINEAR EQUATIONS

Among the solutions of three kinds of nonlinear equations in one dimensional systems, cubic nonlinear Klein-Gordon (including Φ~4), Sine-Gordon and double Sine-Gordon, some mapping relations exist. When a solution of any one equation is known, so are the other two.

Supercooled liquids analogous fractional Stokes–Einstein relation in NaCl solution above room temperature

The Stokes–Einstein relation D^T/η and its two variants D~τ-1 and D^T/τ follow a fractional form in supercooled liquids, where D is the diffusion constant, T the temperature,η the shear viscosity, and τ the structural relaxation time.The fractional Stokes–Einstein relation is proposed to result from the dynamic heterogeneity of supercooled liquids.In this work, by performing molecular dynamics simulations, we show that the analogous fractional form also exists in sodium chloride(NaCl) solutions above room temperature.D~τ-1 takes a fractional form within 300–800 K;a crossover is observed in both D^T/τ and D^T/η.Both D^T/τ and D^T/η are valid below the crossover temperature Tx,but take a fractional form for T > Tx.Our results indicate that the fractional Stokes–Einstein relation not only exists in supercooled liquids but also exists in NaCl solutions at high enough temperatures far away from the glass transition point.We propose that D^T/η and its two variants should be critically evaluated to test the validity of the Stokes–Einstein relation.

Fractional variant of Stokes–Einstein relation in aqueous ionic solutions under external static electric fields

Both ionic solutions under an external applied static electric field E and glassy-forming liquids under undercooled state are in non-equilibrium state.In this work,molecular dynamics(MD)simulations with three aqueous alkali ion chloride(NaCl,KCl,and RbCl)ionic solutions are performed to exploit whether the glass-forming liquid analogous fractional variant of the Stokes–Einstein relation also exists in ionic solutions under E.Our results indicate that the diffusion constant decouples from the structural relaxation time under E,and a fractional variant of the Stokes–Einstein relation is observed as well as a crossover analogous to the glass-forming liquids under cooling.The fractional variant of the Stokes–Einstein relation is attributed to the E introduced deviations from Gaussian and the nonlinear effect.

ON RELATIONS BETWEEN THE MODIFIED-ITERATIVE METHOD AND CHIEN’S PERTURBATION SOLUTION

In this paper, we gave analytical formulas of characteristic relation of circular plate in solving high-order solutions of modified-iterative method, which reduces the calculating quantities of the method. Having deduced the relations between the modified-iterative method and Chien's perturbation solution, we obtained the conclusion that the convergent regions of the two methods are the same.

Solution Set of the Fuzzy Relation Equa?

本文提出λ半子空间的概念，论证了模糊关系方程ＸＡ＝ｂ的解集是λ半子空间。

Deep Purification of Zinc Ammoniacal Leaching Solution by Cementation with Zinc Dust

Deep purification of zinc ammoniacal leaching solution by cementation using zinc dust was studied.The effects of relative amount of metallic impurities,dosage of zinc dust,purification time,temperature,pH value and total ammonia concentration in the solution on the purification of the solution were investigated.The results indicate that total ammonia concentration in the solution had no effect on the purification,but relative amount of metallic impurities,dosage of zinc dust,purification time,temperature and pH value of the solution were the main factors influencing the purification.Keeping appropriate molar ratio of copper to cadmium or nickel to cadmium was beneficial to the cementation of cadmium.Nevertheless,the presence of cobalt went against the cementation of cadmium and cobalt.All metallic impurities could be decreased to acceptable levels under the optimized conditions of 2 g/L of zinc dust dosage,1 h of purification time,35℃,pH value 9.03 of zinc ammoniacal leaching solution.The deeply purified zinc ammoniacal solution obtained by one-stage purification meets the requirements of zinc electrowinning.

Raman and infrared spectroscopic quantification of the carbonate concentration in K_(2)CO_(3)aqueous solutions with water as an internal standard

Carbonate-bearing fluids widely exist in different geological settings,and play important roles in transporting some elements such as the rare earth elements.They may be trapped as large or small fluid inclusions(with the size down to<1μm sometimes),and record critical physical-chemical signals for the formations of their host minerals.Spectroscopic methods like Raman spectroscopy and infrared spectroscopy have been proposed as effective methods to quantify the carbonate concentrations of these fluid inclusions.Although they have some great technical advantages over the conventional microthermometry method,there are still some technical difficulties to overcome before they can be routinely used to solve relevant geological problems.The typical limitations include their interlaboratory difference and poor performance on micro fluid inclusions.This study prepared standard ion-distilled water and K_(2)CO_(3)aqueous solutions at different molarities(from 0.5 to 5.5 mol/L),measured densities,collected Raman and infrared spectra,and explored correlations between the K_(2)CO_(3)molarity and the spectroscopic features at ambient P-T conditions.The result confirms that the Raman O-H stretching mode can be used as an internal standard to determine the carbonate concentrations despite some significant differences among the correlations,established in different laboratories,between the relative Raman intensity of the C-O symmetric stretching mode and that of the O-H stretching mode.It further reveals that the interlaboratory difference can be readily removed by performing one high-quality calibration experiment,provided that later quantifying analyses are conducted using the same Raman spectrometer with the same analytical conditions.Our infrared absorption data were collected from thin fluid films(thickness less than~2μm)formed by pressing the prepared solutions in a Microcompression Cell with two diamond-II plates.The data show that both the O-H stretching mode and the O-H bending mode can be used as internal standards to determine the carbonate concentrations.Since the IR signals of the C-O antisymmetric stretching vibration of the CO32ion,and the O-H stretching and bending vibrations from our thin films are very strong,their relative IR absorbance intensity,if well calibrated,can be used to investigate the micron-sized carbonate-bearing aqueous fluid inclusions.This study establishes the first calibration of this kind,which may have some applications.Additionally,our spectroscopic data suggest that as the K_(2)CO_(3)concentration increases the aqueous solution forms more large water molecule clusters via more intense hydrogen-bonding.This process may significantly alter the physical and chemical behavior of the fluids.

Prediction of Water Activity for Mixed Aqueous Solutions from the Data of Their Binary Constituent Solutions

The equation of Patwardhan and Kumar for water activities of mixed electrolyte solutions is extended to aqueous solutions containing non-electrolytes. This equation and the linear isopiestic relation are used to predict water activities of 56 ternary aqueous solutions in terms of the data of their binary subsystems. Both equation of Patwardhan and Kumar and the linear isopiestic relation can provide good predictions for water activities of the present 40 electrolyte solutions, and the linear isopiestic relation generally yields better predictions. The predictions of the extended equation of Patwardhan and Kumar and the linear isopiestic relation are in general quite reasonable for the present 8 ternary solutions of electrolytes and non-electrolytes, and the results of the linear isopiestic relation are usually better. The predictions of these two methods generally agree well with the experimental data for the 8 non-electrolyte mixtures being studied, and the linear isopiestic relation is better.

Performance of Concrete Subjected to Severe Multiple Actions of Composite Salts Solution under Wet-Dry Cycles and Flexural Loading in Lab

Several action regimes were employed, namely, those exposed to solutions containing single and/or composite chloride and sulfate salts, and under wet-dry cycles and/or flexural loading. The variations in dynamic modulus of elasticity（Erd values） were monitored, as well as the key factor impacting on the chloride ingress when concrete subjected to multiple action regimes was identified by the method of Grey Relation Analysis（GRA）. The changes in micro-structures and mineral products of interior concrete after different action regimes were investigated by means of X-ray diffraction（XRD）, mercury intrusion technique（MIP）, and scanning electron microscopy（SEM）. The test results showed that the cyclic wet-dry accelerated the deterioration of OPC concrete more than the action of 35% flexural loading based on the results of Erd values and the GEA. The analyses from micro-structures could give certain explanations to the change in Erd values under different action regimes.

Exact Solutions to Maccari's System

Based on the generalized Riccati relation,an algebraic method to construct a series of exact solutionsto nonlinear evolution equations is proposed.Being concise and straightforward,the method is applied to Maccari'ssystem,and some exact solutions of the system are obtained.The method is of important significance in exploring exactsolutions for other nonlinear evolution equations.

A Formula of Solution for a Class of Linear Recurence with Two Indices

It is very difficult, sometimes impossible, to get a formula solution of recurrence relation, even for the case of homogeneous recurrence with one indite. In this paper, according to the principle of soluting algebraic equation, we present the formula of solution for a class of recurrnce relations with two indices by appling iteration and induction. It provides a concrete model to solve the concerning problems with modern computing tools.

Study of Stability of Saturated Salt Solutions Cells

This paper study stability of saturated salt solutions cells at 25 ℃. These cells were prepared and measured at National Institute for Standard （NIS-Egypt） to study the stability of the saturated salt solutions. The study was carried out using three saturated salt solutions, which are Potassium Acetate 22.5%, Potassium Iodide 68.9% and Potassium Sulphate 97.3% to cover low, medium and high relative humidity. The study was carried out using different shapes and volumes half liter spherical, liter spherical and liter conical per each salt which was prepared. The apparatus which used in measurement system in the first time are the same which used after ten years. The results show that the change of relative humidity value after ten years ranged from 0.1% to 0.7%. This value is suitable within uncertainty ＋ 2%. The period of stability for each run for all cells was found to be more than five hours and this period enough for calibration. The measurements show that the cells are stable for more than ten years with accepted value.

基于患者公共关系管理的医患矛盾解决方法初探

医患矛盾的影响因素是复杂、深远的,双方之间的矛盾亟须得到有效解决。文章基于患者公共关系管理有关理论方法,分析日益凸显的医患矛盾现状及其成因,并应用患者公共关系管理手段,不断加强医院患者公共关系管理。通过持续完善、改进患者公共关系管理标准作业,设立专业化管理部门,提升危机意识,拓展宣传服务与教育外延等一系列富有较强操作性的管理行动,能够有效地为医院日常运营创造以患者为代表的良好的外部公共关系环境,对缓和当下不断激化的医患矛盾起到了积极影响;同时也对探索建立与完善医患矛盾应对相关机制具有一定的参考意义。

血液透析中心静脉导管封管液——DEFENCATH^(®)

DEFENCATH^(®)(taurolidine/heparin,牛磺罗定/肝素)是美国食品药品管理局(FDA)批准的首款血液透析中心静脉导管封管液,含牛磺罗定和肝素2种成分,其中牛磺罗定对革兰阴性菌、革兰阳性菌及真菌具有广谱抗菌活性,还具有抗内毒素和外毒素的活性,且尚未观察到微生物耐药,安全性良好;肝素采用小剂量,可有效抗凝且出血风险低,两者相辅相成。该封管液有效降低了导管相关血流感染的发生率,具有较高的临床应用价值,将为维持性血液透析的肾衰竭患者提供更多选择。

妊娠期糖尿病患者血清分泌性卷曲相关蛋白-5、热休克蛋白60、溶质载体家族16成员11的表达及其与胰岛素抵抗的关系

目的探讨分泌性卷曲相关蛋白-5(sFRP5)、热休克蛋白60(HSP60)、溶质载体家族16成员11(SLC16A11)在妊娠期糖尿病(GDM)患者血清中的表达及其与胰岛素抵抗的关系。方法选取2022年1月—2023年12月在本院就诊的120例GDM患者为研究组,另选取同期120例健康孕妇为对照组。检测血清sFRP5、HSP60、SLC16A11表达水平;检测并计算胰岛素抵抗相关指标[空腹血糖(FBG)、空腹胰岛素(FINS)、胰岛素抵抗指数(HOMA-IR)]的水平;采用Pearson法分析血清sFRP5、HSP60、SLC16A11与胰岛素抵抗的相关性;采用Logistic回归分析法与受试者工作特征(ROC)曲线分析血清sFRP5、HSP60、SLC16A11与GDM的相关性。结果研究组血清sFRP5表达低于对照组,血清HSP60、SLC16A11、FBG、FINS、HOMA-IR高于对照组,差异有统计学意义(P<0.05)。Pearson相关性分析显示,血清sFRP5与HSP60、SLC16A11、FBG、FINS、HOMA-IR呈负相关(P<0.05);血清HSP60与SLC16A11、FBG、FINS、HOMA-IR呈正相关(P<0.05);血清SLC16A11与FBG、FINS、HOMA-IR呈正相关(P<0.05)。多因素Logistic回归分析显示,HSP60、SLC16A11、FBG、FINS、HOMA-IR是妊娠期患者发生GDM的影响因素,sFRP5是保护因素(P<0.05)。血清sFRP5、HSP60、SLC16A11联合诊断妊娠期患者发生GDM的曲线下面积(AUC)为0.924,3项指标联合诊断价值优于各指标单独诊断(P均<0.05)。结论GDM患者血清sFRP5水平降低,HSP60、SLC16A11水平升高;3项指标均为妊娠期患者发生GDM的影响因素,且与胰岛素抵抗相关;3项指标联合对GDM具有较高的诊断效能。

一测多评法测定法制半夏曲中11种成分含量及其GRA、EW-TOPSIS质量评价

目的采用一测多评(QAMS)法同时测定法制半夏曲中肌苷、鸟苷、腺苷等11种成分含量,并建立其灰色关联度分析(GRA)联合熵权逼近理想解排序分析法(EW-TOPSIS)综合质量评价方法。方法采用Shimadzu C 18色谱柱;乙腈-0.5%醋酸为流动相,梯度洗脱,流速1.0 mL·min-1;检测波长254和290 nm。以对甲氧基肉桂酸乙酯为内参比物质,计算其他10个成分的相对校正因子(RCF),测定各成分含量。采用GRA联合EW-TOPSIS模型对法制半夏曲进行综合质量评价。结果法制半夏曲中11种成分在一定浓度范围内线性关系良好,相关系数均>0.999;平均加样回收率96.94%~100.12%(RSD<2.0%,n=9);QAMS与外标法(ESM)实测值无明显差异。GRA模型相对关联度0.2903~0.6187,EW-TOPSIS模型相对接近度0.2114~0.6343;GRA和EW-TOPSIS模型综合评价结果基本一致。结论QAMS法便捷、准确,可用于法制半夏曲多指标成分定量控制,GRA联合EW-TOPSIS模型可用于法制半夏曲综合质量评价。

基于TOPSIS和GRA的信息安全风险评估

信息安全风险评估是一项非常重要的信息安全保障活动.依据信息安全相关标准,可从资产、威胁和脆弱性3方面识别出重要的风险因素,并确定相应的信息安全风险评估指标.参考等保2.0确定风险评估指标是一种可行的方法.在进行信息安全风险评估时,采用熵权法进行客观的指标赋权,并结合优劣解距离法(technique for order preference by similarity to ideal solution,TOPSIS)和灰色关联分析(grey relational analysis,GRA)进行综合评估.实例分析表明,依据信息熵进行客观赋权相对减少了主观因素的影响;基于TOPSIS和GRA进行信息安全风险评估,综合被评价对象整体因素和内部因素,较有效地将多项信息安全风险评估指标综合成单一评分,便于对多个被评对象进行信息安全风险的择优与排序.

大学生创业法律教育遭遇的困境和对策探析

创业法律教育是创业教育的重要内容。新时代背景下,高校应高度重视大学生创业法律教育,不断优化课程体系,创新教学方法,努力培养出一批既懂创业又懂法律的高素质人才。因此,加强大学生创业法律教育的价值意蕴,进一步增强大学生创业法律基础与能力,注重理论与实践教学相结合,同时兼顾学生全面发展与创业需求,才能推动大学生顺利创业就业。

基于最优组合权重的GRA-TOPSIS地下采场爆破方案优选模型

从经济技术、人员设备安全及爆破质量参数等3个方面综合考虑,选取15项二级指标作为影响采场爆破效果的评判标准,将AHP法与熵权法相结合进行赋权以确定最优权重,并将优劣解距离法(TOPSIS)与灰色关联法(GRA)相结合,构建GRA-TOPSIS综合评价模型。以某铜矿为例,初选5种爆破方案,根据评价指标对各爆破方案进行定量分析,得出其综合优越度,进而确定最优爆破方案。研究结果表明,5种爆破方案综合优越度分别为58.5%、62.0%、35.0%、68.7%、32.8%,即最优爆破方案为倾斜掏槽、80°倾斜崩矿。经矿山实践验证,评价结果与实际爆破效果吻合,表明将该模型用于采场爆破方案优选是可行的。