Discrete Dynamics in Nature and Society最新文献_第7页

Regional Risk Assessment for Urban Major Hazards Using Hybrid Method of Information Diffusion Theory and Entropy 利用信息扩散理论和熵的混合方法对城市重大灾害进行区域风险评估

IF 1.4 4区数学

Discrete Dynamics in Nature and Society Pub Date : 2023-11-16 DOI: 10.1155/2023/8899371

Xinlong Zhou, Xinhui Ning, Longzhi Zheng, Dongzhu Jiang, Peipei Gao, Dashun Fu

{"title":"Regional Risk Assessment for Urban Major Hazards Using Hybrid Method of Information Diffusion Theory and Entropy","authors":"Xinlong Zhou, Xinhui Ning, Longzhi Zheng, Dongzhu Jiang, Peipei Gao, Dashun Fu","doi":"10.1155/2023/8899371","DOIUrl":"https://doi.org/10.1155/2023/8899371","url":null,"abstract":"Urban regional risk is a complex nonlinear problem that encounters insufficient information, randomness, and uncertainty. To accurately assess the overall urban risk, a regional risk assessment model for urban public safety was proposed by using the information diffusion theory. The entropy theory was employed to optimize the information diffusion model to reduce the uncertainty. A framework of urban regional risk assessment model based on information diffusion and entropy was constructed. Finally, a case study of Hangzhou city in China was presented to demonstrate the performance of the proposed method. Results showed that the proposed method could successfully estimate the urban regional risk of Hangzhou city. The risk levels and probabilities of different hazard indicators were basically consistent with reality. The hazards with respect to industrial and mining accidents and road traffic accidents were extremely serious. More than 80 deaths from industrial and mining accidents would occur almost every 3 years, and more than 400 deaths of RTA would occur almost every 2.6 years. Moreover, centralized intervals of the risk level associated with five hazards were found, where urban risks were more likely to happen and had higher vulnerability. It could provide guidance for the government’s urban safety management and policy-making.","PeriodicalId":55177,"journal":{"name":"Discrete Dynamics in Nature and Society","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139266996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Some Identities of Fully Degenerate Dowling Polynomials and Numbers 完全退化道林多项式与数的一些恒等式

4区数学

Discrete Dynamics in Nature and Society Pub Date : 2023-11-14 DOI: 10.1155/2023/5460608

Lingling Luo, Yuankui Ma, Wencong Liu, Taekyun Kim

引用次数: 0

Does Fiscal Mechanism Affect the Promotion of Outward Foreign Direct Investment in Green Innovation? 财政机制是否影响绿色创新对外直接投资?

4区数学

Discrete Dynamics in Nature and Society Pub Date : 2023-11-10 DOI: 10.1155/2023/6630603

Xiao Lei, Yuanyuan Xie, Xianfeng Chen

{"title":"Does Fiscal Mechanism Affect the Promotion of Outward Foreign Direct Investment in Green Innovation?","authors":"Xiao Lei, Yuanyuan Xie, Xianfeng Chen","doi":"10.1155/2023/6630603","DOIUrl":"https://doi.org/10.1155/2023/6630603","url":null,"abstract":"This study aims to investigate the driving mechanisms behind outward foreign direct investment (OFDI) on regional green total factor innovation efficiency (GTFIE), focusing specifically on the external fiscal factor perspective. We measured the GTFIE using the super slacks-based model and established a threshold model using financial agglomeration and fiscal decentralization as moderating variables for empirical analysis. The findings indicate that the level of GTFIE in China is relatively low, with an average value of only 0.588 in the sample provinces. It is worth noting that there is a serious imbalance in China’s regional green innovation development. The eastern region has an average GTFIE of 0.886 and is home to nine of the top ten GTFIE provinces. Moreover, regional financial factors exert a substantial moderating impact on the spillover of OFDI. OFDI exhibits a significant dual threshold effect on GTFIE under external fiscal moderation. Specifically, with an increase in the degree of financial agglomeration, the relationship between OFDI and GTFIE changes from being insignificant to a significant positive correlation, with a gradient enhancement. Meanwhile, the relationship between them exhibits an “inverted U-shaped” nonlinear dynamic pattern under fiscal decentralization moderation.","PeriodicalId":55177,"journal":{"name":"Discrete Dynamics in Nature and Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135141137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Local Entropy-Based Coupled Anisotropic Diffusion for Detail-And Edge-Preserving Smoothing 局部熵耦合各向异性扩散的保边光滑

4区数学

Discrete Dynamics in Nature and Society Pub Date : 2023-11-08 DOI: 10.1155/2023/8878120

De Zhao, Lan Chen

引用次数: 0

Research on Government Green Subsidy Strategy of Heterogeneous Agricultural Product Supply Chain 异质性农产品供应链政府绿色补贴策略研究

4区数学

Discrete Dynamics in Nature and Society Pub Date : 2023-11-08 DOI: 10.1155/2023/8040707

Rong Wu, Yanqi Chen, Man Jiang, Jian Zhang

{"title":"Research on Government Green Subsidy Strategy of Heterogeneous Agricultural Product Supply Chain","authors":"Rong Wu, Yanqi Chen, Man Jiang, Jian Zhang","doi":"10.1155/2023/8040707","DOIUrl":"https://doi.org/10.1155/2023/8040707","url":null,"abstract":"To promote dual carbon targets, this study builds a heterogeneous agricultural product supply chain comprised of a green agricultural product producer, an ordinary agricultural products producer, and a retailer. This study constructs four strategic government green subsidy models, wherein the nongovernment subsidy, government subsidy for green agricultural producers, subsidy for green consumers, and dual subsidies. Based on Stackelberg’s game theory, this study analyzes the impact of differentiated green subsidies on heterogeneous agricultural product supply chain decision-making. The results show that the government will provide green subsidies only when the input cost coefficient of green quality is within a certain threshold. Consumers’ preference for green agricultural products will improve the level of green quality. The dual subsidy strategy of the government has the highest social welfare and can stimulate the motivation of green production. When considering the subsidy expenditure, the green consumer subsidy strategy can achieve a higher level of green quality and promote the consumption of green agricultural products. The government should combine different subsidy target effects and subsidy effects to provide appropriate green subsidy strategies. According to the corresponding subsidy strategy, the producers and retailers of heterogeneous agricultural products carry out green investment, reasonable pricing, and precision marketing.","PeriodicalId":55177,"journal":{"name":"Discrete Dynamics in Nature and Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135392065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Retracted: The Nexus among Good E-Governance Practice, Decentralization, and Public Administration for Sustainable Local Development 摘自:良好的电子政务实践、权力下放和公共管理促进地方可持续发展之间的关系

4区数学

Discrete Dynamics in Nature and Society Pub Date : 2023-11-01 DOI: 10.1155/2023/9764185

Discrete Dynamics in Nature and Society

引用次数: 0

Carbon Emission Performance of Robot Application: Influencing Mechanisms and Heterogeneity Characteristics 机器人应用的碳排放性能:影响机制和异质性特征

4区数学

Discrete Dynamics in Nature and Society Pub Date : 2023-11-01 DOI: 10.1155/2023/4380575

Luguang Zhang, Qitaisong Shen

{"title":"Carbon Emission Performance of Robot Application: Influencing Mechanisms and Heterogeneity Characteristics","authors":"Luguang Zhang, Qitaisong Shen","doi":"10.1155/2023/4380575","DOIUrl":"https://doi.org/10.1155/2023/4380575","url":null,"abstract":"With the new round of technological revolution and industrial change, industrial robots have an important role to play in the fight against climate change and in achieving the goal of “carbon peaking and carbon neutrality.” Based on the panel data of the application level of industrial robots in Shanghai and Shenzhen A-share listed companies from 2011 to 2019, this study examines the impact of industrial robots on carbon emission performance and discusses specific ways industrial robots can affect carbon emission performance. The results show that industrial robots can significantly improve carbon emission performance. Mechanism analysis shows that industrial robots can improve carbon emission performance through productivity and competition effects. Heterogeneity analysis shows that the application effect of industrial robots varies based on enterprise nature, regional location, and carbon emission intensity. The study can make potential contributions. First, this study systematically analyzes the impact of artificial intelligence technology on carbon emissions from the perspective of carbon emission performance, which can supplement the research on carbon emission performance. Second, this study calculates application levels of artificial intelligence technology at the enterprise level and uses panel and linear intermediary effect models to analyze the transmission mechanism between the application of artificial intelligence technology and carbon emission performance. Third, the heterogeneity analysis results can provide empirical support for formulating differentiated artificial intelligence carbon reduction strategies and be used as a reference to further promote the green development of artificial intelligence technology.","PeriodicalId":55177,"journal":{"name":"Discrete Dynamics in Nature and Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135271573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reverse Logistics Implementations Solutions: Interval Type 2 FAHP-FTOPSIS Approach 逆向物流实施方案:区间2型FAHP-FTOPSIS方法

4区数学

Discrete Dynamics in Nature and Society Pub Date : 2023-10-31 DOI: 10.1155/2023/6805773

Sedigheh Solati, Payam Shojaei, Moslem Alimohammadlou, Zahra Heidari Hesamabadi

{"title":"Reverse Logistics Implementations Solutions: Interval Type 2 FAHP-FTOPSIS Approach","authors":"Sedigheh Solati, Payam Shojaei, Moslem Alimohammadlou, Zahra Heidari Hesamabadi","doi":"10.1155/2023/6805773","DOIUrl":"https://doi.org/10.1155/2023/6805773","url":null,"abstract":"In recent years, reverse logistics (RL) has come to the fore as an important issue, given the increasing environmental concerns, corporate social responsibility, and sustainable competition. Today, RL is considered a strategic activity. Legal requirements, social responsibilities, environmental concerns, economic interests, and customer awareness have led manufacturers to produce eco-friendly products and to collect returned and used products. Nevertheless, there are barriers to the implementation of RL in organizations. This study sought to prioritize solutions for overcoming the barriers to the implementation of RL in the Iranian iron and steel industry. To analyze the data, interval type-2 fuzzy AHP (FAHP) and fuzzy TOPSIS (FTOPSIS) have been used. The results revealed that “policy-related issues,” “knowledge-related issues,” and “economic issues” were the key barriers and showed the highest ranks, respectively. Furthermore, the results indicated that “strategic collaboration with reverse chain partners,” “using advanced technologies for waste collection,” and “transparent quality and product value” were the major measures to overcome the barriers. The proposed model suggests that decision-makers should consider long-term relations with supply chain partners in organizations to implement RL.","PeriodicalId":55177,"journal":{"name":"Discrete Dynamics in Nature and Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135809105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Selection of EVs as Tourist and Logistic Means of Transportation in Bosnia and Herzegovina’s Nature Protected Areas Using Z-Number and Rough Set Modeling 基于z -数和粗糙集模型的波黑自然保护区旅游物流交通工具选择

4区数学

Discrete Dynamics in Nature and Society Pub Date : 2023-10-31 DOI: 10.1155/2023/5977551

Adis Puška, Anđelka Štilić, Darko Božanić, Aleksandar Đurić, Dragan Marinkovic

{"title":"Selection of EVs as Tourist and Logistic Means of Transportation in Bosnia and Herzegovina’s Nature Protected Areas Using Z-Number and Rough Set Modeling","authors":"Adis Puška, Anđelka Štilić, Darko Božanić, Aleksandar Đurić, Dragan Marinkovic","doi":"10.1155/2023/5977551","DOIUrl":"https://doi.org/10.1155/2023/5977551","url":null,"abstract":"This research focuses on the use of electric vehicles (EVs) to transport visitors and cargo within Bosnia and Herzegovina’s Kozara National Park. Reduced air pollution and the preservation of natural resources are required to help protect this aerial spa. Together with the expert employees of this NP, the EV that would best suit their needs was chosen. The process of decision-making combines subjective and objective methods. Employees first chose the criteria and alternatives and then weighed their importance. On that occasion, Z-numbers were used to include uncertainty in the decision, because it is not always possible to make decisions with complete certainty. Furthermore, the weight of these criteria was determined using the fuzzy PIPRECIA (PIvot Pairwise Relative Criteria Importance Assessment) method. Range (C1) became the most important criterion, followed by vehicle cost (C2), and the technical specifications of these EVs were used to compare them. Because these specifications vary, a rough set was used in which the minimum and maximum EV characteristics were taken based on specific criteria. To rank the alternatives, the R-CRADIS (Rough Compromise Ranking of Alternatives with Distance to Ideal Solution) method was used. According to the research results, the Mercedes eVito Tourer 90 kWh is the highest ranked EV and the validation of the results confirmed these findings. According to the research results, the Mercedes eVito Tourer 90 kWh is the highest ranked EV and the validation of the results confirmed these findings. The sensitivity analysis revealed that if criterion C1 is not as important, the other EVs are ranked higher. This research`s methodology has demonstrated flexibility, therefore it is recommended for use in similar research.","PeriodicalId":55177,"journal":{"name":"Discrete Dynamics in Nature and Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135809100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Automotive Product Portfolio Design from the Perspective of Energy Sustainability: Multicriteria Decision-Making Based on Lotka–Volterra MCGP Model 能源可持续性视角下的汽车产品组合设计:基于Lotka-Volterra MCGP模型的多准则决策

4区数学

Discrete Dynamics in Nature and Society Pub Date : 2023-10-19 DOI: 10.1155/2023/7271614

Jing Liang, Sheng-Yuan Wang, Xiao-Lan Wu

{"title":"Automotive Product Portfolio Design from the Perspective of Energy Sustainability: Multicriteria Decision-Making Based on Lotka–Volterra MCGP Model","authors":"Jing Liang, Sheng-Yuan Wang, Xiao-Lan Wu","doi":"10.1155/2023/7271614","DOIUrl":"https://doi.org/10.1155/2023/7271614","url":null,"abstract":"Low energy consumption and green transformation of automobile product portfolio is the trend of the times. Automotive manufacturers make product portfolio decisions by setting multiple criteria such as fuel consumption, sales, and volume. It is also important to take into account the symbiotic interaction effects between automotive products. In order to achieve the above research objectives, this paper constructs the Lotka–Volterra MCGP model to make multicriteria decisions on automobile product portfolio design from the perspective of energy sustainability with BMW Brilliance is taken as an example to illustrate the process of using the multicriteria model. The empirical analysis successively measures product growth using the logistic model, analyzes the symbiotic relationship of product portfolios using the Lotka–Volterra model, and finally performs multicriteria evaluation using the MCGP model. In order to verify the reliability of the model, this paper verifies the robustness of the model from the perspectives of parameter dynamics, system boundaries, and model scalability. The results of empirical analysis and robustness analysis show that the Lotka–Volterra MCGP model proposed in this paper is applicable to the multicriteria decision-making of automobile product portfolio design from the perspective of energy sustainability.","PeriodicalId":55177,"journal":{"name":"Discrete Dynamics in Nature and Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135729559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0