植物种群灰色-马尔柯夫模型的初步研究

探讨植物种群灰色－马尔柯夫模型的理论和方法。对日本落叶松人工种群的密度的自然变化过程模拟和预测，表明灰色－马尔柯夫模型是一种较为理想的种群动态模型。     

植物种群灰色—马尔柯夫模型的初步研究

探讨植物种群灰色－马尔柯夫模型的理论和方法。对日本落叶松人工种群的密度的自然变化过程模拟和预测，表明灰色－马尔柯夫模型是一种较为理想的种群动态模型。     

科技人才需求预测的动态双因子模型

建立了一种利用计划经济体制下的观测数据，预测未来市场经济体制下科技人才需求量的新方法－动态双因子预测法，并预测了辽宁省１９９４－２０００年科技人才的需求量及（带有学历约束的）补充量。     

满足滞留度指标的图像波门预测技术研究

将衡量目标图像跟踪好坏的滞留度指标转换成预测误差稳态方差指标,利用满意估计思想估计增益,对图像波门中心进行预测,使得稳态预测误差方差满足给定误差方差指标、预测误差系统的极点配置到给定的圆内,确保目标图像跟踪过程中,目标穿越波门的滞留度满足预定要求,并保证预测过程具有满意动态特性。利用线性矩阵不等式（LMI）方法,将满意估计增益的求解问题转化成LMI组的可行解问题,后者可借助M atlab－LMI工具箱有效求解。     

多变量约束控制及其在大型催化裂化装置中的应用

介绍多变量约束控制软件包的整体框架和主要功能,并阐述了ＭＣＣ的控制和优化策略。完整的ＭＣＣ软件包除核心组件－多变量约束预测控制组件外,还包含了模型辨识和数据校正、非线性预测控制,软测量,动态仿真、Ｉ／Ｏ接口、组态、共享数据库驱动,工艺过程动态监控,用户应用程序接口以及历史数据处理等组件。ＭＣＣ技术已成功地应用于一大型催化裂化装置,取得了显著的经济和社会效益。     

福建煤炭生产的费-效及成本影响的灰色预测

本文应用灰色理论，建立福建煤炭生产的费－效及原煤成本影响度ＧＭ（１，１）模型群，预测和分析福建原煤的费－效值及相关因素对原煤成本的动态影响程度，探讨研究福建煤炭生产的费－效动态关系的新途径．表３，参２．     

矿产资源资产未来净收益动态预测系统

针对已建立的矿产资源资产净收益动态预测模型比较复杂、计算工作量大、手工计算难以完成的特点,开发了矿产资源资产净收益动态预测软件系统。分析了预测软件的设计思路、主要功能及实现过程,建立了系统软件的功能结构。净收益动态预测软件操作简便,使用方便,使矿产资源资产净收益动态预测能够真正付诸于实际。     

模糊时间序列预测在动态经济系统预测中的应用

研究适合于动态经济系统的预测方法,对指导我国现阶段的经济工作有很大的意义。为尽可能地减少对动态经济系统预测的偏差,将模糊数学的理论应用于预测过程中,应用模糊时间序列预测方法,解决带有模糊信息的动态预测问题,使所得出的预测结果能够更加符合现实的需要。     

凝析气井井筒动态预测方法研究

凝析气井在生产过程中井筒压力降低到露点压力以下,会产生与一般纯气藏完全不同的相态变化。在相态变化过程中,气相和液相随着组分的变化而产生质量的传递,使用常规的井筒动态方法进行预测,必然产生较大的误差。本文通过对凝析气井井筒动态预测分析,完善了新的凝析气井井筒动态预测理论和方法,同时运用凝析气井生产系统动态优化软件对凝析气井的井筒动态进行预测,提高了生产系统动态优化设计方法,成功应用于现场并取得了较好的效果。     

汇率波动的预测研究

本文提出的多层递阶－灰色预测综合预测法是运用多层递阶法,通过辨识时变参数,建立时变参数动态预测模型,并在此基础上进一步运用灰色预测方法,通过对时变参数的预测来预测汇率波动．实例表明：本法与非时变多项式回归预测比较,有效提高了预测精度     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with