Optimization of Multi-Execution Modes and Multi-Resource-Constrained Offshore Equipment Project Scheduling Based on a Hybrid Genetic Algorithm

Offshore engineering construction projects are large and complex,having the characteristics of multiple execution modes andmultiple resource constraints.Their complex internal scheduling processes can be regarded as resourceconstrained project scheduling problems(RCPSPs).To solve RCPSP problems in offshore engineering construction more rapidly,a hybrid genetic algorithmwas established.To solve the defects of genetic algorithms,which easily fall into the local optimal solution,a local search operation was added to a genetic algorithm to defend the offspring after crossover/mutation.Then,an elitist strategy and adaptive operators were adopted to protect the generated optimal solutions,reduce the computation time and avoid premature convergence.A calibrated function method was used to cater to the roulette rules,and appropriate rules for encoding,decoding and crossover/mutation were designed.Finally,a simple network was designed and validated using the case study of a real offshore project.The performance of the genetic algorithmand a simulated annealing algorithmwas compared to validate the feasibility and effectiveness of the approach.

CMIP 6 models simulation of the connection between North/South Pacific Meridional Mode and ENSO

The subtropical North and South Pacific Meridional Modes(NPMM and SPMM)are well known precursors of El Niño-Southern Oscillation(ENSO).However,relationship between them is not constant.In the early 1980,the relationship experienced an interdecadal transition.Changes in this connection can be attributed mainly to the phase change of the Pacific decadal oscillation(PDO).During the positive phase of PDO,a shallower thermocline in the central Pacific is responsible for the stronger trade wind charging(TWC)mechanism,which leads to a stronger equatorial subsurface temperature evolution.This dynamic process strengthens the connection between NPMM and ENSO.Associated with the negative phase of PDO,a shallower thermocline over southeastern Pacific allows an enhanced wind-evaporation-SST(WES)feedback,strengthening the connection between SPMM and ENSO.Using 35 Coupled Model Intercomparison Project Phase 6(CMIP6)models,we examined the NPMM/SPMM performance and its connection with ENSO in the historical runs.The great majority of CMIP6 models can reproduce the pattern of NPMM and SPMM well,but they reveal discrepant ENSO and NPMM/SPMM relationship.The intermodal uncertainty for the connection of NPMM-ENSO is due to different TWC mechanism.A stronger TWC mechanism will enhance NPMM forcing.For SPMM,few models can simulate a good relationship with ENSO.The intermodel spread in the relationship of SPMM and ENSO owing to SST bias in the southeastern Pacific,as WES feedback is stronger when the southeastern Pacific is warmer.

Fault Diagnosis Model Based on Feature Compression with Orthogonal Locality Preserving Projection

Based on feature compression with orthogonal locality preserving projection（OLPP）,a novel fault diagnosis model is proposed in this paper to achieve automation and high-precision of fault diagnosis of rotating machinery.With this model,the original vibration signals of training and test samples are first decomposed through the empirical mode decomposition（EMD）,and Shannon entropy is constructed to achieve high-dimensional eigenvectors.In order to replace the traditional feature extraction way which does the selection manually,OLPP is introduced to automatically compress the high-dimensional eigenvectors of training and test samples into the low-dimensional eigenvectors which have better discrimination.After that,the low-dimensional eigenvectors of training samples are input into Morlet wavelet support vector machine（MWSVM） and a trained MWSVM is obtained.Finally,the low-dimensional eigenvectors of test samples are input into the trained MWSVM to carry out fault diagnosis.To evaluate our proposed model,the experiment of fault diagnosis of deep groove ball bearings is made,and the experiment results indicate that the recognition accuracy rate of the proposed diagnosis model for outer race crack、inner race crack and ball crack is more than 90%.Compared to the existing approaches,the proposed diagnosis model combines the strengths of EMD in fault feature extraction,OLPP in feature compression and MWSVM in pattern recognition,and realizes the automation and high-precision of fault diagnosis.

Generalized projective synchronization of the fractional-order chaotic system using adaptive fuzzy sliding mode control

An adaptive fuzzy sliding mode strategy is developed for the generalized projective synchronization of a fractional- order chaotic system, where the slave system is not necessarily known in advance. Based on the designed adaptive update laws and the linear feedback method, the adaptive fuzzy sliding controllers are proposed via the fuzzy design, and the strength of the designed controllers can he adaptively adjusted according to the external disturbances. Based on the Lya- punov stability theorem, the stability and the robustness of the controlled system are proved theoretically. Numerical simu- lations further support the theoretical results of the paper and demonstrate the efficiency of the proposed method. Moreover, it is revealed that the proposed method allows us to manipulate arbitrarily the response dynamics of the slave system by adjusting the desired scaling factor λi and the desired translating factor ηi, which may be used in a channel-independent chaotic secure communication.

STUDY OF FAILURE MODES OF MICROELECTRONIC PACKAGING MODULES BY HOLOGRAPHY QUASI PROJECTION MOIRE METHOD

In this paper, a novel interferometric method with a wide range of sensitivities, called holography quasi projection moire, is proposed. It combines the features of the variated double projection moire method and the holographic interferometry method. This technique is used to study the failure modes of microelectronic packaging modules.

Research on the Teaching Mode of Entrepreneurial Project Management General Courses

Under the background of "the Belt and Road" and "Internet +", innovation and Entrepreneurial education in colleges and universities has been pushed to the focus of education. The opening of the course 3.0 "Entrepreneurial Project Management" in General Studies course of Wuhan University is an innovative education mode under the requirements of the background of the times. The development of network information technology in the new era has brought about the subversion and reform of teaching mode. This paper first analyzes the problems and present situation of the teaching of Entrepreneurial project management, introduces the characteristics of the teaching mode, and makes effective research and exploration on the three teaching modes of Entrepreneurial project management, in order to provide reference for the curriculum teaching reform and to promote the teaching effect of innovation and Entrepreneurial courses in colleges and universities.

Demonstration and Radiation Extension mode of Agricultural Technology——A Case of the Science and Technology Project of High Yield in Hebei Province

Firstly,relying on the science and technology project of high yield in Hebei Province,connotation of agricultural technology demonstration and extension mode and the high yield grain project in Hebei Province is introduced.Extension mode of agricultural technology demonstration and radiation is constructed.Agricultural technology demonstration and radiation mode includes the radiation center,primary irradiation and secondary irradiation.Secondly,management system and operational mechanism of agricultural technology demonstration and radiation mode are discussed,mainly expressed in establishing leading group in each demonstration county(city),carrying out leader contract responsibility system,establishing expert advisor steering group and setting up core experts group for subject,establishing technical experts group for subject,setting up leading group in the radiation area,carrying out chief expert responsibility system and technician matrix responsibility system,establishing the operating mechanism of "open,flow,competition and collaboration" with "test area-expert two-way selection" as the core content.Finally,countermeasures to improve the agricultural technology demonstration and radiation mode is put forward,such as establishing the rural technology demonstration base,strengthening cooperation with enterprises,and adopting flexible technical training,so as to promote the spread of agricultural high-tech,to increase the contribution rate of agricultural technology,and to offer ideas for agricultural technology extension model at the new era.

Research on Teaching Mode of "Entrepreneurial Project Management" Course based on Flipped Classroom

Under the background of the era of “mass entrepreneurship and innovation”, innovation and entrepreneurship education in colleges and universities has been promoted to the focus of educational work. The establishment of self-improvement and entrepreneurship class in Wuhan University is an innovative education mode under the requirement of "Double Creation" education. The development of network information technology in the new era has given rise to the subversion and reform of teaching models. The appearance of flipped classrooms has broken the barrier of traditional education and provides a new train of thought for innovation and entrepreneurship teaching model reform in colleges and universities. This paper takes the self-improvement entrepreneurship class of Wuhan University as an example, introduces the flipped classroom into the course of "Entrepreneurial Project Management", and analyzes the application process of the flipped classroom in the course teaching from three aspects: before class, during class and after class, in order to provide a reference for the curriculum teaching reform and promote the teaching effect of innovation and entrepreneurship courses in colleges and universities.

Memetic algorithm for multi-mode resource-constrained project scheduling problems

A memetic algorithm （MA） for a multi-mode resourceconstrained project scheduling problem （MRCPSP） is proposed. We use a new fitness function and two very effective local search procedures in the proposed MA. The fitness function makes use of a mechanism called ＂strategic oscillation＂ to make the search process have a higher probability to visit solutions around a ＂feasible boundary＂. One of the local search procedures aims at improving the lower bound of project makespan to be less than a known upper bound, and another aims at improving a solution of an MRCPSP instance accepting infeasible solutions based on the new fitness function in the search process. A detailed computational experiment is set up using instances from the problem instance library PSPLIB. Computational results show that the proposed MA is very competitive with the state-of-the-art algorithms. The MA obtains improved solutions for one instance of set J30.

Discussion on Project Management Mode and Power Engineering Management

In view of the current development of power engineering management,traditional management methods can no longer be applied to the management of current power engineering work.Therefore,it is necessary to innovate and optimize existing project management modes,transform traditional management concepts and models,focus on addressing the problems in project management and improve management.This paper mainly analyzes the project management mode and power engineering management.

Research on Innovation of Engineering Project Management Mode and Intelligent Management

In order to realize the standardization and normalization of environmental protection project management.This paper uses the literature method to study the current status of the existing project management mode,and points out the problems:lack of a sound project management system,insufficient information application of project management,and unclear decentralization in project management;on this basis,this paper proposes optimization strategies from the aspects of perfecting the engineering project management system,clarifying the allocation of project management authority,and strengthening the construction of engineering project management information.And put forward the future development trend of project engineering management,on the basis of two mainstream management modes of BOT(Build-Operate-Transfer)and EPC(Engineering Procurement Construction),build a standardized project management platform to achieve intelligent management.Realize intelligent management of engineering project management to achieve standardization and standardization,greatly improving the efficiency of project management.

Research and Discussion on Project Cluster Teaching Mode based on the Enterprise Level Application

Currently, the country promotes with great effort the university should the application specific education, speeds up constructing to take getting employed as the guidance modern vocational education system. In order to strengthen the vocational skill ability of student and enhance the employment competitiveness, this article proposes enterprise application-based project colony educational model. In the teaching process, the school subject knowledge education and business skills needs of the enterprise integration, the use of enterprise program teaching, so that students can not only receive professional knowledge of the system education, but also the ability of professional application of formal training and training, after graduation the students can quickly adapt to the work of the business requirements, to achieve the purpose of application-oriented teaching.

Management Mode and Concrete Construction of the Three Gorges Project

The Three Gorges Project (TGP) is the largest concrete structure in the world to this day. The project, with a total amount of approximately 28 million m 3 of concrete, is characterized by complicated structures, intensive construction and high technical standards, which should not only meet the requirements of stability but of special flood releasing, power generation and navigation improvement. Through a decade of engineering practice, a management mode that embodies the characteristics of TGP under construction has been formed. Various new techniques and technologies have been used to ensure the concrete quality. Design, construction and management measures adopted for the concrete works of the project are discussed in this article on an overall basis.

Spatial Models in Thinking and Communication

Spatial models joint external and internal aspects of human activity,mental schemas of thinking,and spatial structures of things.These models represent objects of knowledge,valuation,and transformation due to similarity with them in various relations,and they participate in inter-subject communication using schemata common for many people.The spatial models can reproduce a modelled object or be productive regarding it.These models are created in cognitive modus of comprehension as images of objects known at various mental levels;in projective modus,they appear as projects of object’s transformation and planes of subject’s actions;in communicative modus,they are interpreted as spatial texts expressing certain senses.All of them interact in spatial thinking,which deals with the relationship of parts and the whole,unlike logical thinking operating with genus-species relations.Both practical and theoretical thinking use common spatial schemas as means of internal modelling,which are elaborated in collective and individual experience.Due to their simplicity and unification,these schemas can serve also as units of spatial codes mediating the objects representation and inter-subject communication through spatial texts created in the semiotized space.

面向“双碳”目标人才培养的工业化学课程教学改革探索与实践

为培养“双碳”目标高等教育紧缺专业人才,过程装备与控制工程专业工业化学课程“教”与“学”的模式需要与时俱进,改变以教师为中心的教学模式,建立以学生为中心的教学模式势在必行。该文针对工业化学课程教学过程中存在的“双碳”目标教育内容不足问题,初步探索通过增加绿色工程教育内容、实施项目驱动教学、建设跨学科的工业化学师资队伍和建立与“双碳”目标人才培养相适应的教学评价方法等措施来提高教学质量,并提出“双碳”目标下工业化学课程体系改革建议,为培养“双碳”目标紧缺人才提供参考和应用实践。

工科类本科生毕业设计管理模式探索

本科生毕业设计是工科类本科生培养过程中的重要实践性教学环节。该文阐述本科毕业设计管理模式研究的重要性,调研中外部分优秀高校工科类本科毕业设计在选题、时间安排、过程管理和知识方法指导方面的管理模式与方法,并运用实证调研的方法研究国内工业工程专业案例。发现目前仍存在选题实践性不够、时间安排不够灵活、欠缺指导等问题。最后提出增进产学研合作、加强规范化管理、增加知识能力培养等建议。

基于计算思维的高中信息技术项目教学模式研究

计算思维作为《普通高中信息技术课程标准(2017年版2020年修订)》提出的四大核心素养之中枢,在当今已被提升到全民素养的高度。项目教学是“新课标”倡导的学习方式,开展基于计算思维的项目教学模式实践,对提升学生信息素养和实现学科价值有着重要意义。研究认为,基于计算思维的项目教学模式需以横向“项目主线”为教学流程,运用计算思维基本方法,在纵向“教学主线”下开展实践,包括确定项目需求,发现生活中的实际问题;抽象分解建模,界定问题生成活动任务;分组协作探究,寻找并实施自动化方案;总结反思评价,实现求解方案拓展迁移等环节。

面向贯通式项目制教学的虚拟教研室组织模式实践

贯通式项目制教学模式是新工科背景下的工程教育新模式,贯穿大学本科四年,通过在做中学的实践,培养学生综合运用知识的能力和解决问题的能力。面向贯通式项目制教学的虚拟教研室是跨学科、跨专业、跨课程的校企联合的新型基层教学组织,是教学研究改革专题虚拟教研室。遵循教学问题导向原则,探讨实践了虚拟教研室的人员组成和人员管理模式。实践了充分运用信息技术,突破时空限制,开展高效便捷、形式多样、线上线下结合的教研新模式,提出了基于国家虚拟教研室平台的贯通项目制教学优质教学资源和教师培训的建设方案,为新型基层教学组织建设提供了一种新思路。

STEAM教育理念下的项目式教学模式建构研究

随着社会的进步和科学的快速发展,社会对于创新型人才和复合型人才的需求越来越多。为了培养出更多符合社会需要、促进社会发展的人才,本文基于STEAM教育理念对项目式教学模式进行研究,从项目式教学的过程出发,构建“项目策划-项目执行-项目反馈”的教学模式,培养学生的创新思维以及解决问题的能力,试图为项目式教学提供新思路。