Unmanned Aerial Vehicle Inspection Routing and Scheduling for Engineering Management

Technological advancements in unmanned aerial vehicles(UAVs)have revolutionized various industries,enabling the widespread adoption of UAV-based solutions.In engineering management,UAV-based inspection has emerged as a highly efficient method for identifying hidden risks in high-risk construction environments,surpassing traditional inspection techniques.Building on this foundation,this paper delves into the optimization of UAV inspection routing and scheduling,addressing the complexity introduced by factors such as no-fly zones,monitoring-interval time windows,and multiple monitoring rounds.To tackle this challenging problem,we propose a mixed-integer linear programming(MILP)model that optimizes inspection task assignments,monitoring sequence schedules,and charging decisions.The comprehensive consideration of these factors differentiates our problem from conventional vehicle routing problem(VRP),leading to a mathematically intractable model for commercial solvers in the case of large-scale instances.To overcome this limitation,we design a tailored variable neighborhood search(VNS)metaheuristic,customizing the algorithm to efficiently solve our model.Extensive numerical experiments are conducted to validate the efficacy of our proposed algorithm,demonstrating its scalability for both large-scale and real-scale instances.Sensitivity experiments and a case study based on an actual engineering project are also conducted,providing valuable insights for engineering managers to enhance inspection work efficiency.

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.

Implementing an Optimal Energy Management System for a Set of Microgrids Using the Harmony Search Algorithm

A microgrid(MG)refers to a set of loads,generation resources and energy storage systems acting as a controllable load or a generator to supply power and heating to a local area.The MG-generated power management is a central topic for MG design and operation.The existence of dispersed generation(DG)resources has faced MG management with new issues.Depending on the level of exchanges between an MG and the main grid,the MG operation states can be divided into independent or grid-connected ones.Energy management in MGs aims to supply power at the lowest cost for optimal load response.This study examines MG energy management in two operational modes of islanded and grid-connected,and proposes a structure with two control layers(primary and secondary)for energy management.At the principal level of control,the energy management system is determined individually for all MG by taking into consideration the probability constraints and RES uncertainty by the Weibull the probability density function(PDF),generation resources’power as well as the generation surplus and deficit of each MG.Then,the information of the power surplus and deficit of each MG must be sent to the central energy management system.To confirm the proposed structure,a case system with two MGs and a condensive load is simulated by using a multi-time harmony search algorithm.Several scenarios are applied to evaluate the performance of this algorithm.The findings clearly show the effectiveness of the proposed system in the energy management of several MGs,leading to the optimal performance of the resources per MG.Moreover,the proposed control scheme properly controls the MG and grid’s performance in their interactions and offers a high level of robustness,stable behavior under different conditions and high quality of power supply.

Optimal Operation of Electric Vehicles and Distributed Generation Resources in Smart Grid Considering Load Management

Technology advancement and the global tendency to use renewable energy in distributed generation units in the distribution network have been proposed as sources of energy supply.Despite the complexity of their protection,as well as the operation of distributed generation resources in the distribution network,factors such as improving reliability,increasing production capacity of the distribution network,stabilizing the voltage of the distribution network,reducing peak clipping losses,as well as economic and environmental considerations,have expanded the influence of distributed generation(DG)resources in the distribution network.The location of DG sources and their capacity are the key factors in the effectiveness of distributed generation in the voltage stability of distribution systems.Nowadays,along with the scattered production sources of electric vehicles with the ability to connect to the network,due to having an energy storage system,they are known as valuable resources that can provide various services to the power system.These vehicles can empower the grid or be used as a storage supply source when parked and connected to the grid.This paper introduces and studies a two-stage planning framework for the concurrent management of many electric vehicles and distributed generation resources with private ownership.In the first stage,the aim is to increase the profit of electric vehicles and distributed generation sources;finally,the purpose is to reduce operating costs.The proposed scheduling framework is tested on a distribution network connected to bus 5 of the RBTS sample network.Besides distributed generation sources and electric vehicles,we integrate time-consistent load management into the system.Due to distributed generation sources such as photovoltaic systems and wind turbines and the studied design in the modeling,we use the Taguchi TOAT algorithm to generate and reduce the scenario to ensure the uncertainty in renewable energy.MATLAB software is used to solve the problem and select the optimal answer.

Visualization Techniques viaMLBS for Personnel Management in Major Events

Mobile location-based services(MLBS)refer to services around geographic location data.Mobile terminals use wireless communication networks(or satellite positioning systems)to obtain users’geographic location coordinate information based on spatial databases and integrate with other information to provide users with required location-related services.The development of systems based on MLBS has significance and practical value.In this paper a visualization management information system for personnel in major events based on microservices,namely MEPMIS,is designed and implemented by using MLBS.The system consists of a server and a client app,and it has some functions including map search and query,personnel positioning and scheduling,location management,messaging,and location service.Managers of the events can quickly search and locate the staff on the specific area of the map in real-time,and make broadcasting messages to the staff,and manage the staff.The client app is developed on the Android system,by which staff users can send the positions information to the server timely.The client users can search fuzzily near their peers and list their locations,and also call near peers through sending messages or query the history record of staff locations.In the design of the system,several new proposed techniques,including visual annotation method for overlapping locations,correcting trajectory drift algorithm,microservices-based overall system architecture methodology and other new techniques,which are applied to the implementation of the system.Also,HTML5,JQuery,MLBS APIs(Application Program Interfaces)related programming techniques have been used and combined with loading Ajax asynchronously and Json data encapsulation,map marker optimization techniques,that can improve the positioning accuracy and the performance of the system.The developed system with practical functions can enhance the efficiencies of the organization and management of major events.

Managing of Smart Micro-Grid Connected Scheme Using Group Search Optimization

This article introduces a group search optimization (GSO) based tuning model for modelling and managing Smart Micro-Grids connected system. In existing systems, typically tuned PID controllers are engaged to point out the load frequency control (LFC) problems through different tuning techniques. Though, inappropriately tuned PID controller may reveal pitiable dynamical reply and also incorrect option of integral gain may even undermine the complete system. This research is used to explain about an optimized energy management system through Group Search Optimization (GSO) for building incorporation in smart micro-grids (MGs) with zero grid-impact. The essential for this technique is to develop the MG effectiveness, when the complete PI controller requires to be tuned. Consequently, we proposed that the proposed GSO based algorithm with appropriate explanation or member representation, derivation of fitness function, producer process, scrounger process, and ranger process. An entire and adaptable design of MATLAB/SIMULINK also proposed. The related solutions and practical test verifications are given. This paper verified that the proposed method was effective in Micro-Grid (MG) applications. The comparison results demonstrate the advantage of the proposed technique and confirm its potential to solve the problem.

A Solution to Knowledge Management in Networked Collaborative Design

Concerning the demands in networked collaborative innovative design, a knowledge-based collaborative design model is introduced the model of knowledge integration along with its relevant supporting techniques are presented. After illustrating the general knowledge search paradigm, a kind of dynamic user model is proposed to improve knowledge search efficiency. At last a short introduction of the system’s implementation is described.

Optimal Energy Consumption Optimization in a Smart House by Considering Electric Vehicles and Demand Response via a Hybrid Gravitational Search and Particle Swarm Optimization Algorithm

Buildings are the main energy consumers across the world,especially in urban communities.Building smartization,or the smartification of housing,therefore,is a major step towards energy grid smartization too.By controlling the energy consumption of lighting,heating,and cooling systems,energy consumption can be optimized.All or some part of the energy consumed in future smart buildings must be supplied by renewable energy sources(RES),which mitigates environmental impacts and reduces peak demand for electrical energy.In this paper,a new optimization algorithm is applied to solve the optimal energy consumption problem by considering the electric vehicles and demand response in smart homes.In this way,large power stations that work with fossil fuels will no longer be developed.The current study modeled and evaluated the performance of a smart house in the presence of electric vehicles(EVs)with bidirectional power exchangeability with the power grid,an energy storage system(ESS),and solar panels.Additionally,the solar RES and ESS for predicting solar-generated power prediction uncertainty have been considered in this work.Different case studies,including the sales of electrical energy resulting from PV panels’generated power to the power grid,time-variable loads such as washing machines,and different demand response(DR)strategies based on energy price variations were taken into account to assess the economic and technical effects of EVs,BESS,and solar panels.The proposed model was simulated in MATLAB.A hybrid particle swarm optimization(PSO)and gravitational search(GS)algorithm were utilized for optimization.Scenario generation and reduction were performed via LHS and backward methods,respectively.Obtained results demonstrate that the proposed model minimizes the energy supply cost by considering the stochastic time of use(STOU)loads,EV,ESS,and PV system.Based on the results,the proposed model markedly reduced the electricity costs of the smart house.

Modeling the Proposal of the Simultaneous Purchases and Sales of Electricity and Gas for the Energy Market in a Microgrid Using the Harmony Search Algorithm

The use of different energy carriers together,known as an energy hub,has been a hot topic of research in recent years amongst scientists and researchers.The term energy hub refers to the simultaneous operation of various infrastructures for energy generation and transfer,which has gained momentum in the form of microgrids(MGs).This paper introduces a new strategy for the optimal performance of an MG consisting of different energy carriers for each day.In a smart distribution network(DN),MGs can reduce their own costs in the previous-day market by bidding on sales and purchases.The sales and purchases bidding problem is challenging due to different uncertainties,however.This paper proposes a two-stage strategy for making an optimal bid on electricity sales and purchases with electricity and gas price dependency in the previous-day and real-time markets for an energy hub.In this model,the MG behavior regarding the electricity and gas energy sales/purchase,the simultaneous effects of electricity and gas prices,as well as the energy carriers’dependence on one another are all examined.Due to the inherent uncertainty in the sources of clean energy production,the probabilistic model and the production and reduction scenario have been used in the paper to cover this issue.In the proposed grid,energy sales/purchases are presented in a multi-carrier MG in a two-stage model.This model is solved by using the harmony search algorithm in MATLAB.Numeric results demonstrate the benefits of this model in reducing energy hub costs of operation.

Storing and Searching Metadata for Digital Broadcasting on Set-Top Box Environments

Digital broadcasting is a novel paradigm for the next generation broadcasting. Its goal is to provide not only better quality of pictures but also a variety of services that is impossible in traditional airwaves broadcasting. One of the important factors for this new broadcasting environment is the interoperability among broadcasting applications since the environment is distributed. Therefore the broadcasting metadata becomes increasingly important and one of the metadata standards for a digital broadcasting is TV-Anytime metadata. TV-Anytime metadata is defined using XML schema, so its instances are XML data. In order to fulfill interoperability, a standard query language is also required and XQuery is a natural choice. There are some researches for dealing with broadcasting metadata. In our previous study, we have proposed the method for efficiently managing the broadcasting metadata in a service provider. However, the environment of a Set-Top Box for digital broadcasting is limited such as low-cost and low-setting. Therefore there are some considerations to apply general approaches for managing the metadata into the Set-Top Box. This paper proposes a method for efficiently managing the broadcasting metadata based on the Set-Top Box and a prototype of metadata management system for evaluating our method. Our system consists of a storage engine to store the metadata and an XQuery engine to search the stored metadata and uses special index for storing and searching. Our two engines are designed independently with hardware platform therefore these engines can be used in any low-cost applications to manage broadcasting metadata.

《科学技术研究项目档案管理规范》的主要内容、特点和意义及相关问题思考

2023年12月1日起施行的《科学技术研究项目档案管理规范》(DA/T 2-2023)为新时期科研档案规范化管理提供了实践指引。基于对该规范修订背景与主要内容的分析与介绍,本文又阐述了其特点与意义,并结合条款内容和科研档案工作实践提出了改进建议。

混合进化算法求解多环节资源配置优化问题

资源配置优化问题是制造业价值链管理的基础问题。然而,现有研究多集中在生产环节,对制造全生命周期的整体考虑不足。研究考虑多环节的制造全生命周期资源配置优化问题(MLCRAOP),旨在通过优化研发设计、生产制造、运维服务和配套设备供应环节的服务资源,提升全生命周期的资源配置客户满意度。将时间、成本、质量指标纳入目标函数构建整数规划模型,提出一种混合进化算法用于求解MLCRAOP。通过在设计案例上的对比实验,验证了混合进化算法具有优异的性能。

低功耗海上救援个人示位标的设计与实现

设计和实现了一种改进的海上救援个人示位标,该示位标具备北斗导航定位能力和北斗短报文通信功能,同时具备人体生命体征监测上报和触水启动的功能,并支持COSPAS-SARSAT卫星搜救系统.为延长示位标的工作时间,设计了一种动态电源管理方法,实现了对不同功能电路电源通道的控制.同时,针对示位标的待机模式和工作模式,设计了超低功耗待机电路和低功耗软件控制设计方案,减少了电能的浪费.最后,分别在山东省威海市和浙江省宁波市至舟山市附近海域对原型样机进行了实际场景测试.原型样机的测试结果表明:示位标在待机状态下,电流为2.3μA,待机时间超过5年;示位标在接收北斗信息状态下,电流为79 mA;示位标在发送状态下,7 000 mAh 7.4 V电池可发送200次求救信息.与现有产品相比,本文提出的海上救援个人示位标具有更低的待机功耗.

市场动荡性如何影响企业外部知识搜寻:管理创新的中介作用

环境会影响企业外部知识搜寻,然而有关组织层面中介机制的探讨较少。考虑到企业变革需要兼顾有效性与合法性,基于管理创新的理性视角与制度视角,探究其如何为外部知识搜寻建立组织体系,并将其标准化与制度化。以120个高管的自我报告为样本数据,进行实证分析。研究结果显示,市场动荡性通过管理创新的2个子维度——组织结构创新、流程创新间接影响外部知识搜寻。其中,组织结构创新与流程创新起完全中介作用,组织冗余调节市场动荡性与管理创新间的正向关系。

水电站设备检修智能知识检索与推荐模型研究应用

为进一步提高标准化水电站设备检修作业效率,增强智慧企业标准化设备检修有效管理与知识传承能力,对标准化水电站设备检修智能平台技术需求进行分析,以搭建智能设备检修知识辅助平台为基础,设计了平台整体架构,提出了智能化关键技术解决方案,并完成了水电站设备检修中知识管理、检索技术和推荐技术等,克服了传统水电站设备检修中知识无法沉淀的问题。该技术方案已成功推广并应用于大岗山水电站标准化设备检修中,有效满足了水电设备检修管理需求并提高了生产效率,取得了较大的经济社会效益。

基于改进和声搜索算法的移动机器人调度

为了提高药物管理系统中移动机器人集群调度的速度和精度,建立一种以移动机器人为载体的集群调度模型,并采用离散-连续双映射编码方式进行调度编码。为了提高调度算法解算性能,提出一种融合最优估计优化方法的改进和声搜索(improved harmony search,IHS)算法,结合最优迭代和有向搜索进行调度最优搜索,提高算法的计算速度和精度;根据全局最优和声进行自适应带宽调整和全随机交叉变异,扩大算法搜索范围和样本多样性,提高算法搜索和计算全局最优解的能力;同时,使用标准测试函数进行改进算法在连续区间上的验证,效果良好。对比试验结果表明,同一测试条件下,所提改进算法和对照算法相比具有更加优异的最优解搜索能力,调度结果精确度均有不同程度提高。可见,IHS算法对于优化自动药物系统调度系统性能具备良好的效果。

New reference trajectory optimization algorithm for a flight management system inspired in beam search

With the objective of reducing the flight cost and the amount of polluting emissions released in the atmosphere, a new optimization algorithm considering the climb, cruise and descent phases is presented for the reference vertical flight trajectory. The selection of the reference vertical navigation speeds and altitudes was solved as a discrete combinatory problem by means of a graphtree passing through nodes using the beam search optimization technique. To achieve a compromise between the execution time and the algorithm＇s ability to find the global optimal solution, a heuristic methodology introducing a parameter called ‘‘optimism coefficient was used in order to estimate the trajectory＇s flight cost at every node. The optimal trajectory cost obtained with the developed algorithm was compared with the cost of the optimal trajectory provided by a commercial flight management system（FMS）. The global optimal solution was validated against an exhaustive search algorithm（ESA）, other than the proposed algorithm. The developed algorithm takes into account weather effects, step climbs during cruise and air traffic management constraints such as constant altitude segments, constant cruise Mach, and a pre-defined reference lateral navigation route. The aircraft fuel burn was computed using a numerical performance model which was created and validated using flight test experimental data.

改进的BP神经网络在精益建造体系下的施工进度预测

针对基于位置管理系统(LBMS)中预测计划精细化程度低的问题,依靠和声搜索算法(HS)优化BP神经网络的权重和阈值,结合实际施工进度信息,构建了基于HS-BP神经网络的LBMS框架,对施工进度计划精准预测。并以广联达华南总部基地项目中梁板模板施工进度为例,验证了HS-BP神经网络的预测精度,同时绘制了梁板模板的实际计划和预测计划的流线图,说明了基于HS-BP神经网络的LBMS框架的可靠性。

基于CSSA优化模糊控制能量管理策略研究

为改善某款混联插电式混合动力汽车(plug-in hybrid electric vehicle,PHEV)的燃油经济性,针对传统模糊控制中模糊隶属函数存在主观性过强、缺乏理论支撑等问题,提出了一种新的方法来优化PHEV模糊控制能量管理策略。首先,通过构建以整车的需求转矩和电池荷电状态作为输入、发动机转矩作为输出的模糊控制器,选取21个隶属度函数变量,以优化燃油经济性为目标,利用混沌方式改进麻雀搜索优化算法进行优化;然后,通过Matlab/Simulink搭建控制策略,并联合AVL Cruise平台搭建的整车模型进行仿真,验证优化模糊控制能量管理策略的有效性。仿真结果表明,在全球轻型汽车测试循环(world light vehicle test cycle,WLTC)工况下,基于混沌方式改进麻雀搜索算法优化的模糊控制能量管理策略与原始模糊控制能量管理策略相比,百公里燃油消耗减少2.1%、NO_(x)气体排放减少13.3%、CO气体排放量下降1.3%、HC气体排放量减少2.9%,有效地提高整车燃油经济性,减少污染气体排放。

基于大数据搜索引擎的地震信息管理系统的研究与实现

近年来,由于国家对测震工作的重视,中国地震行业取得了较迅速的增长,但地震装备信息方面由于国家防震减灾机关的装备信息工作还比较落后,信息化和精细化管理程度不高,对本部门装备的状况、数量等信息还没有科学合理的统计分析方式和办法,从而导致了大批优秀地震装备信息资料的浪费。根据分析与管理地震信息数据资料的现状,文章针对防震减灾部门对地震信息管理的实际需求,基于ElasticSearch具有分布式多用户的全文搜索引擎和分布式实时文件存储的优点设计并实现了基于ElasticSearch大数据搜索引擎的地震信息资源管理系统,以方便对地震设备进行高效管理并对地震信息资源进行信息化的建设工作。