Hybrid data-driven framework for shale gas production performance analysis via game theory, machine learning, and optimization approaches

A comprehensive and precise analysis of shale gas production performance is crucial for evaluating resource potential,designing a field development plan,and making investment decisions.However,quantitative analysis can be challenging because production performance is dominated by the complex interaction among a series of geological and engineering factors.In fact,each factor can be viewed as a player who makes cooperative contributions to the production payoff within the constraints of physical laws and models.Inspired by the idea,we propose a hybrid data-driven analysis framework in this study,where the contributions of dominant factors are quantitatively evaluated,the productions are precisely forecasted,and the development optimization suggestions are comprehensively generated.More specifically,game theory and machine learning models are coupled to determine the dominating geological and engineering factors.The Shapley value with definite physical meaning is employed to quantitatively measure the effects of individual factors.A multi-model-fused stacked model is trained for production forecast,which provides the basis for derivative-free optimization algorithms to optimize the development plan.The complete workflow is validated with actual production data collected from the Fuling shale gas field,Sichuan Basin,China.The validation results show that the proposed procedure can draw rigorous conclusions with quantified evidence and thereby provide specific and reliable suggestions for development plan optimization.Comparing with traditional and experience-based approaches,the hybrid data-driven procedure is advanced in terms of both efficiency and accuracy.

Joint Optimization of Imperfect Preventive Maintenance and Production Scheduling for Single Machine Based on Game Theory Method

In this study,an optimization model of a single machine system integrating imperfect preventive maintenance planning and production scheduling based on game theory is proposed.The costs of the production department and the maintenance department are minimized,respectively.Two kinds of three-stage dynamic game models and a backward induction method are proposed to determine the preventive maintenance(PM)threshold.A lemma is presented to obtain the exact solution.A comprehensive numerical study is provided to illustrate the proposed maintenance model.The effectiveness is also validated by comparison with other two existed optimization models.

The Logical Premise and Methodological Basis of Marx’s Machine Production Theory

Marx’s production paradigm constitutes the logical premise of his construction of machine production theory.Therefore,the machine production theory elaborated by Marx has a unique research method and theoretical perspective,which is fundamentally different from other non-Marxist technical theories,which is also the basic starting point for understanding and explaining Marx’s machine production theory.By defining the logical premise of Marx’s machine production theory as production paradigm,we can not only reinterpret this theory based on the original context,but also examine the latest interaction between contemporary capitalism and technological reality on the basis of this interpretation.Only from the production paradigm can we truly grasp the complete connotation of“machine production”in Marx’s mature criticism of political economy.

Heritage Communities in Consumer Contexts Spatial Production of Tourism Research-Take Qixian Zhao Yu Historical City as an Example

Taking Zhaoyu Historical City in Qixian County as an example,this paper explores the production process of tourism space in Zhaoyu Historical City in the context of consumption,based on Lefebvre's triadic dialectic theory.The study reveals that,driven by the development of tourism,subjects such as the government and planners possess absolute dominance over spatial representations,while residents demonstrate receptive and adaptive action strategies and social relations are reproduced,presenting a harmonious state.Further exploring the tourism community in the environmental performance of the subject of action,social relations,consumption demand,daily life practice,cultural capital,etc.,the daily life practice of the tourism community has transcended the original logic of tourism spatial production and has a certain extension.The mechanism analysis in this paper can help guide the healthy development of tourism space in the neighboring historical cities or communities and achieve the dual purpose of promoting the economic development of the community and heritage protection.

Game Theory Model and Equilibrium Analysis of Peasant's Production Decision

Unbalanced agricultural production decision becomes the great block that influences the effective distribution of social resources, national grain security, social stability and economic development. This paper took the game theory as an analyzed tool to describe the interactional processes among the peasants, and set up the game theory model of independent decision and joint decision by peasants. It was shown that the government's positive guide and the market environment macroscopically controlled by the government could effectively increased the peasants' income.

Risk Assessment of Agricultural Products Supply-Chain Finance Based on D-S Theory

Agricultural products supply-chain finance, as one of the solutions to the issue of “capital problems” of agriculture, countryside and farmers, has proposed a kind of characteristics model to assess the risk of agricultural production, processing and marketing, which can improve the issue of farmers and enterprises lacking of funds. This model is proposed on the basis of uncertain information processing method of D-S theory and its data combination rules, combined with the “discount rate” correction model, and it includes a risk assessment index system of agricultural products supply-chain finance, fully considering the five aspects of production, processing, marketing, cooperation of supply chain and collateral. At last, a taro supply chain is taken for example. And the risk assessment of its supply-chain finance based on this model has been discussed in detail. And the result has proved that the model and its algorithm are practical and feasible.

Design Theory and Method of Complex Products:A Review

Design is a high-level and complex thinking activity of human beings,using existing knowledge and technology to solve problems and create new things.With the rise and development of intelligent manufacturing,design has increasingly reflected its importance in the product life cycle.Firstly,the concept and connotation of complex product design is expounded systematically,and the different types of design are discussed.The four schools of design theory are introduced,including universal design,axiomatic design,TRIZ and general design.Then the research status of complex product design is analyzed,such as innovative design,digital design,modular design,reliability optimization design,etc.Finally,three key scientific issues worthy of research in the future are indicated,and five research trends of“newer,better,smarter,faster,and greener”are summarized,aiming to provide references for the equipment design and manufacturing industry.

Consumers'Purchase Intention of Geographical Indication Agricultural Products under the Background of Live-streaming Sales:An Exploratory Research Based on Grounded Theory

Exploring the mechanism for the formation of consumer purchase intentions of geographical indication agricultural products in the context of live-streaming sales can provide an important reference for brand marketing of geographical indication agricultural products.In this study,in-depth interviews were conducted with consumers of geographical indication agricultural products.Based on grounded theory,open coding,axial coding and selective coding were performed for interview text.Finally,21 concepts,7 subcategories and 3 main categories were obtained,and a model of the formation mechanism of the purchase intention of geographical indication agricultural products under the background of live-streaming sales was constructed,that is,"consumer cognition-consumer attitude-consumer behavior".Among them,consumer cognition includes two dimensions:the type of geographical indication agricultural products and the live-streaming appeal strategy,i.e.,the personal cognition of consumer and the promotion of live-streaming host's strategy.Consumer attitude is value perception of consumers,mainly including two dimensions of functional value and emotional value.Consumer behavior is the consumer's willingness to buy.It has been concluded that the types of geographical indication agricultural products interact with the live-streaming appeal strategies.Through the intermediary of consumers'value perception,consumers'purchase intention is generated.Among them,resource-oriented geographical indication agricultural products adopt rational live-streaming appeal strategies,which can enhance the consumer's perception of functional value,thereby promoting their purchase intention;and cultural and creative geographical indication agricultural products brands adopt perceptual live-streaming appeal strategies,which can enhance the emotional value perception of consumers,thereby promoting their purchase intention.

The Applicaton of IAF Theory to the Study of Dissociation Equilibrium (Ⅱ) --The Calculation of Solubility Product Constant in Nonaqueous Solvents

This article reports a theoretical calculation of solubility product constant of several slightly soluble silver salts in a number of nonaqueous solvents according to the IAF (interaction force) theory based on the interaction free energy of electrostatic, orientation, induction and dispersion. The calculated values of pKsp are in good accordance with those from literature.

Empirical Study on Customer Satisfaction Influencing Factors of Industry Application Products Based on Experiential Level Theory

The rapid development of industry application products has greatly influenced society. It has become essential for some telecommunication companies to focus on customer satisfaction with industrial products used by the government and enterprise customers. Following the review of a previous study of customer satisfaction and with the help of experiential level theory,this article attempts to establish a Satisfaction Factors Model for researching customer satisfaction with industry applications. We chose a product named "Mobile Monitor" and investigated the emotional satisfaction of 127 users and company leaders from different walks of life,and showed that 7 of the product's features affected the customers' overall emotional satisfaction. Lastly,this paper points out management implications of this application based on quantitative results. It presents a preliminary exploration program for customer satisfaction research in this specific field. The empirical research on a specific product based on experimental level theory may serve as a reference for other companies that desire to carry out similar surveys in future.

Research on the Problem of Art Production Theory Since the New Period

The issue of art production is an important topic discussed in China’s academia. The article first discusses thetheoretical issues of early art production in China, mainly taking Mr. Dong Xuewen’s views as an example. Second,scholars have their own views on the discussion of the unbalanced development of art production and materialproduction in the 1970s and 1980s. Third, this article uses the art production theory to construct the contemporaryliterary art form, and raises the art production theory to the essentialism to discuss the art production theory and thereflection theory. Fourth, the relationship between art production and art consumption is in large-scalecomprehensive systematic research.

A Study on C-E Translation of Product Introductory Texts on Company Websites Under Skopos Theory

This paper takes the C-E translation of product introductory texts on official websites of three mobile phone makers as the study object under the Skopos theory, with an aim to identify and analyze the distinctive translation features of such special type of text. The exhausted parse and analysis bring out the findings that there exists a significant translation difference between the Chinese and English-version product introductory texts on official websites. It is found that Chinese introductory texts are more inclined to rely on exquisite words and redundant expressions to describe products’ features and functions, while switching to the corresponding English version, simple vocabularies and compact sentence structure are more frequent. Hereafter, this paper raises two practical guidelines to instruct translation activities in business contexts.

Consumptive ecological footprint and productive ecological footprint: a modification on ecological footprint theory to evaluate regional sustainable development

Ecological footprint theory and its application achievements in global and regional sustainable development systems are studied by consulting the published literature, which finds that the application of ecological footprint theory to regional sustainability evaluation has leaded to a perplexity that the indicated result was inconsistent with the philosophy of sustainable development theory. Illuminated by the mechanical system of the movement of matters, it comes up that ecological footprint based on consumption of biologic production could not tell whether the ecological pressure acts on the specified region, and the original ecological footprint theory also undervalued the development impartiality of a region. A modification on this theory is made by introducing consumptive ecological footprint and productive ecological footprint, in which the latter is taken as the indicator of regional sustainability. The development impartiality can be demonstrated by comparison between the global ecological deficit per capita and regional consumptive ecological deficit per capita.

Research and Development of Skincare Products Based on the Theory of Traditional Chinese Medicine

The application of traditional Chinese medicine in skincare formula development was expounded from the views of“symptom,theory,method,prescription,medicine and effect”.Traditional Chinese medicine prescriptions were improved according to the laws and regulations for China’s cosmetic industry and by the modern scientific and technological means,which had important guiding significance for the research and development of plant-based functional skincare products.The problems in concept claim and quality control standard,and the problems of market confusion,which were ascribed to the lack of basic research in the application of Chinese herbal cosmetics,were pointed out.The future development direction of plant-based functional cosmetics guided by TCM theory was prospected.

“Extreme utilization” theory and practice in gas storages with complex geological conditions

Based on more than 20-year operation of gas storages with complex geological conditions and a series of research findings, the pressure-bearing dynamics mechanism of geological body is revealed. With the discovery of gas-water flowing law of multi-cycle relative permeability hysteresis and differential utilization in zones, the extreme utilization theory targeting at the maximum amount of stored gas, maximum injection-production capacity and maximum efficiency in space utilization is proposed to support the three-in-one evaluation method of the maximum pressure-bearing capacity of geological body, maximum well production capacity and maximum peak shaving capacity of storage space. This study realizes the full potential of gas storage(storage capacity) at maximum pressure, maximum formation-wellbore coordinate production, optimum well spacing density match with finite-time unsteady flow, and peaking shaving capacity at minimum pressure, achieving perfect balance between security and capacity. Operation in gas storages, such as Hutubi in Xinjiang, Xiangguosi in Xinan, and Shuang6 in Liaohe, proves that extreme utilization theory has promoted high quality development of gas storages in China.

医院后勤安全生产管理的理论与实践探讨

在辨析安全管理相关概念和理论的基础上,以危险源理论、事故致因理论和系统安全理论为指导,分析总结中国医学科学院肿瘤医院后勤基础设施和基础服务安全生产管理实践经验。

基于扎根理论的生态产品价值实现路径研究

生态产品价值实现是我国将生态文明与物质文明建设相结合发展理念的重要变革,是“两山”理论的实践抓手,对高质量发展战略也具有重大意义。通过扎根理论方法,依托自然资源部发布的19个典型案例的陈述材料,归纳出我国生态产品价值实现的基本逻辑,提炼到生态产品价值实现的3条主要路径——产业化、生态化、金融化,并识别了驱动各路径下生态产品价值实现行动的前因和中介条件,生成了生态产品价值实现理论,能够为政府在生态产品价值实现方面制定政策与组织实践提供重要的理论参考。

基于熵产理论的多级液力透平能量耗散机理分析

液力透平作为一种液体余压能回收装置,在小水电建设和能量回收领域得到广泛应用,但其内部能量损失特性不清。以两级径流式液力透平为研究对象,基于熵产理论和Omega涡识别准则分析了各过流部件内能量耗散机理。结果表明:速度脉动和壁面效应是能量损失的主要来源,设计工况下二者总占比为98.03%。叶轮和导叶是透平内能量耗散的主要区域;小流量工况,叶轮损失占比较高;大流量工况下,导叶损失占比较高。叶轮内的能量损失源于叶片前缘分离涡、吸力面回流涡以及叶片尾缘涡等不稳定流动现象,而相对液流角与叶片进口安放角的不匹配是导致叶轮内产生不稳定流动的根本原因;在导叶和导叶Ⅱ-反导叶中,不同流量下导致其能量耗散的因素基本保持一致,叶片前缘失速涡和流动分离等劣态流动引起的动量交换是导致能量损失的主要原因。环形吸水室内流动的非对称性导致导叶Ⅰ各流道内熵产率分布不均匀,而导叶Ⅱ-反导叶通过正导叶的整流减小了冲击效应,各流道内熵产率分布均匀且高熵区较小。

基于扎根理论的水生态产品价值实现路径构建

围绕水生态产品价值实现的要素和待解决的核心问题,在厘清水生态产品概念内涵的基础上,采用扎根理论对自然资源部办公厅公布的12个水生态产品价值实现典型案例进行系统分析。通过三段式编码过程提炼出52个初始概念、18个基本范畴和3个主范畴,构建了解释水生态产品价值实现的运行机理和路径的理论模型。结果表明:水生态产品价值实现是以“强化水生态产品供给能力”为根本,通过资源修复、摸排和整合建立资源优势;以补链、延链和强链“打造水生态产品产业链”为手段,打通价值变现通道;“构建多元联动体系”进行保障,为价值转化进行制度赋能和形成合力释能的系统工程。