基于扇区开合的管制员排班优化

为提高管制员的利用效率和工作满意度,制定出更切合实际运行的管制员排班表,从管制工作的实际需要出发,以人员需求数量最少为目标,在符合民航局各种规章要求的基础上,建立管制员排班模型。在初始模型的基础上,又考虑了人员对工作及休息时间的个性化需求,对模型进行改进。最后以某空中交通管理局区域管制室管制员数据为例进行分析,使用LINGO求解器对模型进行求解。结果表明:与手工编制的排班时间表相比,本研究通过排班优化模型制定出的排班方案有效地减少了执勤人数,减少人员浪费,并能较为充分地满足管制员的个性化需求。     

疫情期间的护士排班优化模型及智能算法

重大疫情突发地组织的护士较多，传统的人工护士排班耗时长，排班结果可能导致护士身体的疲惫，增加医疗的风险，且护士值班的不均匀诱发护士的消极抗疫的现象发生.建议重大疫情期间的护士排班问题归结为该文提出的5个软约束条件作为优化目标，7个硬约束条件作为约束条件的多目标规划模型.该模型能够避免护士连续上班时间过长和过于集中，尽可能不扰乱护士的生物钟，降低医疗事故发生的风险；同时还考虑了各个班型在护士之间进行均匀分配，兼顾了护士的心理健康，避免护士心里产生不满而诱发护士消极抗疫现象的发生；采用两层粒子群遗传算法求解护士排班多目标优化模型，因为粒子群算法求得的解极大可能是局部最优解，在粒子群算法中嵌入遗传算法，有利于全局寻优，极大地提高了获得全局最优解的概率.采用两层编码技术能够同时得到护士编号及其对应的排班状态，节约算法的迭代时间；将该文提出的模型及算法应用于重庆三峡中心医院护士排班的实际问题，能快速高效得出疫情期间的均衡护士排班表，提高了抗疫工作的效率，解决了长期困扰医院的护士最佳排班问题.该护士排班模型和算法也可推广到航空机组智能排班和学校智能排课方面，具有广阔的应用前景.     

基于单亲遗传算法的飞行机组指派技术

航空公司机组人员指派是一个NP疑难问题.现在航空公司的排班工作存在着排班人员工作量大,排班过程效率低,值勤成本高,排班结果机组人员不满意等等的问题.为解决这些问题,采用单亲遗传算法,利用计算机技术,对机组人员进行合理的排班.通过与改进遗传算法进行比较,单亲遗传算法收敛速度更快,能够得到更合理的机组指派结果.     

一种新型多功能护士表的研制

为临床护理人员提供一种实用便捷的新型多功能护士表。根据临床护理人员对护士表结构和功能的实际需求,增加旋转表环和隐藏式砂轮的设计,以满足临床护理人员的全方位需求。在实际使用中,新型多功能护士表可随时方便地计算所消耗时间,且解决了砂轮易遗失的问题。说明新型多功能护士表结构简单、使用方便,既提高了临床护理人员的工作效率,又能满足实际工作中的使用需求。     

飞行机组排班的赋值算法

目前各大航空公司发展迅猛,航班量大量增加,飞行人员紧缺。合理、科学地机组排班越来越引起重视,它不仅有效地缓解了飞行员紧缺的问题,并且提高了航班运行的安全性和准时性。本文介绍了国内航空公司普遍采用的机组排班的基本程序,重点阐述了机组排班问题的赋值选择算法,引入＂航班节＂概念,将一个具体的机组排班计划归结为搭配赋值、优化选择的模式,该优化结果不仅符合有关规定,且充分考虑了机组排班过程中的各种因素的影响,极大地提高了机组的工作效率。     

二日夜班对血皮质醇浓度影响的研究

了解夜班护士机体不适是否与皮质醇分泌有关,寻找减轻夜班护士机体不适的方法.将24名夜班护士分为2组,A组按顺时针方向安排"二日夜班",B组按逆时针方向安排,监测两种不同排班方式下夜班护士血皮质醇浓度.结果表明,两种排班方式下,不同班次血皮质醇浓度无显著性差异;不同采血时间差异显著,且与正常生理节律一致."二日夜班"护士血皮质醇浓度与正常生理节律一致,但与夜班护士工作现实时间不同步,这可能是"二日夜班"护士机体不适反应的原因之一.     

基于分支定界算法的护士排班模型研究

针对国内缺乏通用排班模型和排班技术落后的问题,本文通过调研分析建立了带有强、弱约束的护士排班模型,并采用整数规划的分支定界算法对模型进行求解和分析。实例验证了该模型的有效性和可行性,有利于提高护理工作的积极性。     

基于DQN的机场地服人员动态排班研究

针对在繁忙机场的地面服务人员动态排班问题,提出一种基于深度Q网络(DQN)的排班方法．首先以最大化任务执行率和最小化员工工作时间作为目标,建立了优化模型;然后根据目标提出了两种不同的排班方法,进而采用DQN算法,根据生成的航班动态数据,提取6个状态特征作为网络的输入,并拟定合适的奖励机制,使得训练后的模型能够动态地选择最好的分配方法,最终对模型进行求解．将该方法应用在连续7 d的实际排班中,实验结果表明：与人工排班结果相比,该方法平均每天的任务完成数增加了0.43个,员工的总工作时长减少了53 min,DQN的排班结果具有明显优势,提高了机场地面服务的工作效率．     

基于细菌觅食算法的排班智能优化

智能排班问题是极为复杂的组合优化问题。它包含了劳动法约束、员工层级、不同层级的工资策略、不同班次的工资策略、资源需求等复杂因素。我们以南昌某医院护士排班智能优化为例,选取了基于细菌觅食优化的算法来为此类问题进行优化求解。为了提高算法的搜索能力,将信息交流机制加入到细菌在趋化过程中的翻转方向选择上,研究了基于四种静态拓扑结构和一种动态拓扑结构的邻域结构下的细菌觅食优化算法。     

基于成本最小的公交人员排班优化模型

为了优化公交人员排班问题,提高公交公司的运营效率和资源利用率,以车辆行车计划为基础、公交公司运营成本最小为目标,构建了公交人员排班问题理论模型,并利用遗传算法和LINGO优化软件分别进行实例求解。算例分析表明,该模型具有可行性和合理性。     

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