Formulation Method and Management Principle for the Safety Base-line of Atmospheric Environmental Quality

The formulation of the safety base-line for atmospheric environmental quality is not only basic needs of mankind maintaining the quality of survival environment but also concrete measures of red line system for national ecological protection. It is urgent to solve the problem in current environmental management how to draft the safety basa-line of atmospheric environmental quality. To solve this problem, the connotation of safety base-line for atmospheric environmental quality is defined firstly, and then the indexes for atmospheric importance, sensitivity and vulnerability are generalized. Moreover, formulation methods for red, yellow and green lines of the safety base-line for atmospheric environmental quality are put forward ,and corresponding division principle and management principle are put forward finally.

Optimization of Energy Resource Management for Assembly Line Balancing Using Adaptive Current Search

This paper aimed to present the optimization of energy resource management in a car factory by the adaptive current search (ACS)—one of the most efficient metaheuristic optimization search techniques. Assembly lines of a specific car factory considered as a case study are balanced by the ACS to optimize their energy resource management. The workload variance of the line is performed as the objective function to be minimized in order to increase the productivity. In this work, the ACS is used to address the number of tasks assigned for each workstation, while the sequence of tasks is assigned by factory. Three real-world assembly line balancing (ALB) problems from a specific car factory are tested. Results obtained by the ACS are compared with those obtained by the genetic algorithm (GA), tabu search (TS) and current search (CS). As results, the ACS outperforms other algorithms. By using the ACS, the productivity can be increased and the energy consumption of the lines can be decreased significantly.

Revenue management method and critical techniques of railway passenger transport

Purpose–Revenue management(RM)is a significant technique to improve revenue with limited resources.With the macro environment of dramatically increasing transit capacity and rapid railway transport development in China,it is necessary to involve the theory of RM into the operation and decision of railway passenger transport.Design/methodology/approach–This paper proposes the theory and framework of generalized RM of railway passenger transport(RMRPT),and the thoughts and methods of the main techniques in RMRPT,involving demand forecasting,line planning,inventory control,pricing strategies and information systems,are all studied and elaborated.The involved methods and techniques provide a sequential process to help with the decision-making for each stage of RMRPT.The corresponding techniques are integrated into the information system to support practical businesses in railway passenger transport.Findings–The combination of the whole techniques devotes to railway benefit improvement and transit resource utilization and has been applied into the practical operation and organization of railway passenger transport.Originality/value–The development of RMRPT would provide theoretical and technical support for the improvement of service quality as well as railway benefits and efficiency.

Insulation State On-line Monitoring and Running Management of Large Generator

This study presented an insulation state monitoring method for large generator based on radio frequency (RF) technique. As an on-line condition monitor and the precondition of condition-based maintenance (CBM), the RF monitor used the high frequency current mutual inductor to detect the partial discharge signal from neutral wire of stator windings. According to the magnitude of indicative value of RF monitor, a five phase model was also proposed to manage the generator’s running better. The practices show that the proposed method is effective.

基于Willans Line的双轴驱动混合动力越野车实时能量管理

为了实现混合动力越野车的实时能量管理,建立了其动力系统的动力学模型,提出利用发动机和电机的Willans Line模型,建立基于WL-ECMS能量管理控制方法的发动机和电机最优输出功率模型。硬件在环试验结果表明,基于WL-ECMS的控制方法可以实现混合动力越野车基本的能量管理,车速跟随误差在合理的范围内,与基于ECMS的能量管理控制方法相比,其百公里油耗仅提高3.03%,与基于规则的能量管理控制方法相比,其百公里油耗低12.07%,且每一个时间步长程序的相对运行时间由基于ECMS方法的100下降到1.65,与基于规则方法的1.07相当,实现了混合动力越野车实时能量管理。

考虑双线相互干涉的铁路项目施工组织研究

针对线状活动铁路工程施工场景,在双线相互干涉条件下,基于线性计划方法,对双线的空间表达以施工区段为单位进行重构,建立时间-施工区段模型,考虑时间、空间、施工资源等约束,构建线路内部约束条件,再以线路内部约束为基础,建立线路间约束条件。结合标准遗传算法,以各条线路各区段内施工资源配置情况为自变量,构建双线相互干涉条件下铁路工程施工进度计划工期优化算法,能够在算法中自动输出最优工期条件下的资源配置情况,根据算法输出的最优工期和资源配置情况制作对应的线性计划图。算例仿真结果表明,工期优化模型和算法能够高效获得最短工期下双线相互干涉的铁路项目施工进度计划,验证了本文模型的合理性和算法的有效性。

Design and validation of real-time dynamic spectrum management in OFDM-based HNPLC systems

Time-varying frequency selective attenuation and colored noises are unfavorable characteristics of power line communication(PLC) channels of the low voltage networks.To overcome these disadvantages,a novel real-time dynamic spectrum management(DSM) algorithm in orthogonal frequency division multiplexing(OFDM)-based high-speed narrow-band power line communication(HNPLC) systems is proposed,and the corresponding FPGA circuit is designed and realized.Performance of the proposed DSM is validated with a large amount of network experiments under practical PLC circumstance.As the noise in each narrow subcarrier is approximately Gaussian,the proposed DSM adopts the BER/SER expression formulized via the AWGN channel to provide a handy and universal strategy for power allocation.The real-time requirement is guaranteed by choosing subcarriers in group and employing the same modulation scheme within each transmission.These measures are suitable for any modulation scheme no matter the system criterion is to maximize data rate or minimize power/BER.Algorithm design and hardware implementation of the proposed DSM are given with some flexible and efficient conversions.The DSM circuit is carried out with Xilinx KC705.Simulation and practical experiments validate that the proposed real-time DSM significantly improves system performance.

A Domain Engineering Approach to Increase Productivity in the Development of a Service for Changes Notification of the Configuration Management Database

This paper presents a domain engineering approach to build a software product line that supports the change notification service in a Configuration Management Database (CMDB) according to the Information Technology Infrastructure Library (ITIL) best practices. For the development of this product line, the proposed approach makes use of a construction of products methodology by analogy: this is a new notation which reports the variability of the products, obtaining metrics as important as the number of products and uses a language that enables, by means of the flexibilization of a product and the development of some generators, to build the rest of the product line. In addition the paper offers a standard for the analysis and design of the CMDB as well. Finally, the paper presents an economic model for the product line, where the profitability and productivity of the proposed solution are analyzed.

Effect of Self-fertilization on Performance, Breeding and Germplasm Management of Four Local Faba Bean Cultivars

Faba bean is self- and cross-fertilized species. The consequences of self-fertilization are important factors determining the germplasm management in such species with levels of heterogeneity and heterozygsity. Effects of self-fertilization on floral, yield and yield components characters were evaluated by comparing two levels of selfing, produced in bee-proof cages, in open-pollination at two locations in Sudan. Selfing process results in no significant differences in yield and yield components within each cultivar. Autofertile lines with reduced partial dependence on insects for seed set could be produced. Spatial isolation should be used to maintain the genetic purity of such lines. An alternate strategy for entries multiplication should focus on increasing heterozygosity and the maintenance of cross-fertilization inside the entries to prevent contamination with foreign pollens. Our results follow the previous knowledge on faba bean genetic resources conservation and management.

Hydrological and economic feasibility of mitigating a stressed coastal aquifer using managed aquifer recharge: a case study of Jamma aquifer, Oman

This study explored the hydrological and economic feasibility of managed aquifer recharge(MAR) using tertiary treated wastewater(TWW) to mitigate salinity in the coastal aquifer of Jamma, Oman. A steady-state groundwater flow and transport model, using MODFLOW software, was developed and calibrated. Different managerial scenarios were simulated and the results reveal that the Jamma aquifer will be further deteriorated in the next 20 a if it remains unmanaged. The groundwater table will decline further by more than 3 m on average; and the iso-concentration salinity line of 1500 mg/L will advance 2.7 km inland, which will severely affect the farming activities in the area. However, MAR using TWW when integrated with the management of groundwater abstraction(e.g., using modern irrigation systems to reduce the abstraction rate) becomes hydrologically feasible to augment the aquifer storage and control seawater intrusion, and hence improves the farming activities. The results indicate that:(1) injecting TWW in the vicinity of irrigation wells(Scenario A2);(2) investing in smart water meters and online control of pumping from the wells to reduce the abstraction rate by 25%(Scenario B); and(3) a combination of both(Scenario B2) are feasible scenarios with positive net present values. Recharge in upstream areas is found not economically feasible because of the very high investment cost of the installation of pipes to transport the TWW over a distance of 12.5 km. Because of securing funds are challenging, Scenario B would be the best option and the second-best option is Scenario A2. Scenario B2 has the lowest net benefit investment ratio and is very attractive because it entails integrated demand and supply management of groundwater. It is required to reduce pumping and to invest in injecting TWW to improve groundwater quality in the vicinity of irrigation wells and to form a hydrological barrier to control seawater intrusion in the long run.

AN ELEMENTARY ANALYSIS OF PROBLEMS IN APPLICATION OF SPACE METHOD IN STRATEGIC MANAGEMENT OF ENTERPRISES

Although it is still a new and developing subject, strategic management of enterprises, the importance of which will be understood by more and more enterprises as the reform and development is deepened, will surely be applied finally. This paper expounds how to apply the Delphi method to determine the essential elements in management and to evaluate enterprises in strategic position and action evaluation (SPACE) method of strategic management of enterprises. Meanwhile, its determination and evaluation are so realistic that they describe the strategic positions at which enterprises may be in the present competitive environment, and they establish a basis for enterprises to correctly choose their strategies of development.

Binary Oriented Feature Selection for Valid Product Derivation in Software Product Line

Software Product Line(SPL)is a group of software-intensive systems that share common and variable resources for developing a particular system.The feature model is a tree-type structure used to manage SPL’s common and variable features with their different relations and problem of Crosstree Constraints(CTC).CTC problems exist in groups of common and variable features among the sub-tree of feature models more diverse in Internet of Things(IoT)devices because different Internet devices and protocols are communicated.Therefore,managing the CTC problem to achieve valid product configuration in IoT-based SPL is more complex,time-consuming,and hard.However,the CTC problem needs to be considered in previously proposed approaches such as Commonality VariabilityModeling of Features(COVAMOF)andGenarch+tool;therefore,invalid products are generated.This research has proposed a novel approach Binary Oriented Feature Selection Crosstree Constraints(BOFS-CTC),to find all possible valid products by selecting the features according to cardinality constraints and cross-tree constraint problems in the featuremodel of SPL.BOFS-CTC removes the invalid products at the early stage of feature selection for the product configuration.Furthermore,this research developed the BOFS-CTC algorithm and applied it to,IoT-based feature models.The findings of this research are that no relationship constraints and CTC violations occur and drive the valid feature product configurations for the application development by removing the invalid product configurations.The accuracy of BOFS-CTC is measured by the integration sampling technique,where different valid product configurations are compared with the product configurations derived by BOFS-CTC and found 100%correct.Using BOFS-CTC eliminates the testing cost and development effort of invalid SPL products.

基于西门子Smart Line的生产配方远程管理方法研究与实现

针对生产线中西门子Smart Line触摸屏的配方需要能在生产总控系统中进行管理的需求,基于Delphi与Prosave,实现了一种生产总控系统远程管理触摸屏配方的方法。通过该方法可以将远程触摸屏配方下载到总控系统数据库中并在表格中呈现,可以将表格中的所有配方上传到远程触摸屏中,实现双向互通,该方法已被应用到东风管件自动生产线项目。通过大量的测试,实际验证结果表明该方法可以达到预期效果。

现代化水库运行管理矩阵体系分析与构建关键问题研究

为支撑行业重点任务建设,提高现代化水库运行管理矩阵的建设水平,通过文献查阅、实地考察和交流咨询等方法,绘制了以工程安全、设施设备、影响区、运行调度和管理监督5个关键环节为一体的现代化水库运行管理矩阵构建体系“一张图”。给出了现代化水库运行管理矩阵的整体架构、层次演进和各要素之间的相互关系,系统梳理了现代化水库运行管理矩阵提出的背景、内涵和要求,对“四全”、“四制(治)”、“四预”、“四管”和雨水情监测预报、工程安全风险感控、生产安全风险感控“三道防线”的对象进行了系统整合和扩展,分析了各概念之间的相互关系和关键技术问题。研究结果表明,构建现代化水库运行管理矩阵是科技和管理水平发展的必然要求。

嵌入治理的激励与培养:乡镇人事结构再生产机制研究

乡镇人事结构是乡镇治理的深层基础。面对乡镇的一线治理场景,行政包干的人事整合机制具有社会激励与团队培养的效应,赋予乡镇人事结构以灵活性。而人事分流拓展了乡镇干部激励与培养的空间,且维系了人事结构的稳定性和公共性。乡镇人事结构再生产嵌入一线治理场景,实现了激励、培养与治理的统一,从而适应了乡镇治理的现实需要。乡镇机构改革须立足乡镇治理情境,在推进乡镇治理机制创新时注重发挥乡镇干部的主体性和能动性,优化乡镇人事结构,激发乡镇治理活力。

基于信息化理念的研究生管理流程改革与实践——以中国地质大学(北京)为例

信息化是提高研究生管理水平的重要手段。笔者以中国地质大学(北京)研究生培养流程为研究对象,梳理以往管理过程中出现的信息盲区、漏洞和主要问题,改变传统的以信息化手段模拟管理流程的方法,提出以信息化理念和手段构建新的管理模式,提升管理水平。改变以培养计划为核心的单线管理流程,建立了培养计划、排课选课、成绩查询三线并行的新式管理流程。近几年的实践表明,优化后的管理流程提升了管理水平,提高了工作效率,极大方便了广大师生,在研究生培养方面每年减少70%以上的工作量,适应了学校研究生全过程-全方位开放式育人模式的新要求,取得了较好的应用效果。

基层公务员一元思维方式及其影响机制——一个理论分析框架

底线心态发轫于经管领域,是描述员工关注某项重要事项而忽视其他竞争性事项的一元思维。在公共管理领域讨论底线心态,是为了解释基层公务员在工作中“左支右绌”的行为困境。基层公务员的底线心态具备灵活性特征,据此提出可能的测量方式,并从底线心态的形成机制和影响效应两个方面来揭示其过程。关于形成机制,可分制度、组织、个体三个层面讨论。其中,目标设定、感知问责、上级底线心态、关注自我利益、社会善念以及情绪耗竭等因素对基层公务员的底线心态产生影响;关于影响效应,根据管理效益和社会伦理两个维度,将基层公务员的组织行为划分为四种类型,由此深入阐述不同要素的底线心态对基层公务员不同类型的组织行为的影响。基层公务员底线心态研究能够促进相关理论发展,值得公共管理学者和实践者重视。

新文科背景下旅游管理专业“一线四立五融”课程思政体系构建

新文科建设的目标之一是培养新时代需要的高素质创新人才。文章以新文科建设为背景,构建旅游管理专业“一线四立五融”的课程思政体系,即以新型旅游人才的培养目标作为立德树人任务的主线,将立德、立志、立学、立行作为育人维度,将思政教育的理念、内容等有机融入旅游管理专业课程的五个教学环节,并提出了学科融合机制、行业联动机制和组织保障机制三大育人机制,以促进新文科教育理念的践行,培养适应文旅时代发展的新型旅游人才。

更好的场所--政府建筑师的角色转变及其在悉尼货运线更新中的呈现

铁路遗产具有线性、综合性和辐射性的特征,对城市更新影响深远。在澳大利亚铁路遗产更新中,政府建筑师扮演了重要角色。澳大利亚政府建筑师曾负责设计重要公共建筑,这些建筑多为政府持有产权的城市地标。自2016年起,政府建筑师的职责重心从建筑设计转向设计管理。文章以政府建筑师的角色转变为线索,分析了悉尼货运线更新中的建筑设计和设计管理环节,更新内容涵盖欧缇莫动力博物馆、公共空间和地方级“绿网”三个层面。其中,政府建筑师通过制定设计政策和政策框架,持续地推广优秀案例、推动优质设计。这不仅为城市公共空间复兴提供了借鉴,也为拓展建筑师的职业范畴带来新思路。

面向BMS应用的锂离子电池析锂诊断方法综述

锂离子电池在低温充电或快速充电时,负极与电解液的界面处容易发生析锂副反应,使得电池容量快速衰减且增加热失控风险。对实际运行的锂离子电池进行析锂诊断,判断其是否发生析锂副反应,是下一代电池管理系统(battery management system,BMS)需要具备的重要功能,对锂离子电池系统的安全稳定运行具有重要意义。根据当前领域发展情况,该文系统总结可在线应用于BMS的析锂诊断方法,根据不同方法的特点,归纳为基于模型驱动、基于数据驱动以及基于先进传感器的3大类方法;并从5个维度详细分析每一类析锂诊断方法的原理、应用特点和局限性。最后,面向未来BMS应用提出析锂诊断方法的发展方向。