IF 1.7 4区工程技术

Complexity Pub Date : 2024-11-26 DOI: 10.1155/2024/8045857

Zhiwei Cao, Baijun Wu, Sha Liu

{"title":"Transfer Payments and Regional Total Factor Productivity: Evidence From China","authors":"Zhiwei Cao, Baijun Wu, Sha Liu","doi":"10.1155/2024/8045857","DOIUrl":"https://doi.org/10.1155/2024/8045857","url":null,"abstract":"<div>\u0000 <p>Through theoretical analysis and empirical test, the following conclusions are drawn: Firstly, the benchmark test proves that transfer payments (TPs) significantly promote regional TFP. Secondly, the conclusions of this paper are still valid after using the system GMM model and instrumental variable method to deal with the endogeneity problem. Thirdly, heterogeneity analysis shows that TPs have a greater impact on TFP in the central and western regions, and general TPs and special TPs significantly promote regional TFP. Fourthly, mechanism analysis shows that TPs promote regional TFP through two channels: narrowing the financial gap between local governments and reducing the vertical fiscal imbalance between central and local governments. Because the balanced distribution of financial resources means the effective supply of public goods, all regions have the conditions to optimize the allocation of resources and improve the efficiency of resource use. Based on this, it is still necessary to implement the TPs system. Also, there is a need to optimize the TP rules.</p>\u0000 </div>","PeriodicalId":50653,"journal":{"name":"Complexity","volume":"2024 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/8045857","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142737482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quantification of the Synergistic Inhibitory Effects of an Oncolytic Herpes Virus Plus Paclitaxel on Anaplastic Thyroid Cancer Cells 肿瘤溶解性疱疹病毒与紫杉醇对无性甲状腺癌细胞协同抑制作用的定量分析

IF 1.7 4区工程技术

Complexity Pub Date : 2024-11-21 DOI: 10.1155/cplx/3899849

Anna Park, Jong Hyuk Byun, Il Hyo Jung, Shingo Iwami, Kwang Su Kim

{"title":"Quantification of the Synergistic Inhibitory Effects of an Oncolytic Herpes Virus Plus Paclitaxel on Anaplastic Thyroid Cancer Cells","authors":"Anna Park, Jong Hyuk Byun, Il Hyo Jung, Shingo Iwami, Kwang Su Kim","doi":"10.1155/cplx/3899849","DOIUrl":"https://doi.org/10.1155/cplx/3899849","url":null,"abstract":"<div>\u0000 <p>Conventional synergy theory explains the inhibitory effects of drug combinations at specific times. Determining the magnitude of inhibition is crucial for exploring the synergy effect. In the results of previous studies, the Chou–Talalay multiple drug effect analysis demonstrated that the combination of a mutant oncolytic herpes virus (G207) and the chemotherapeutic agent (paclitaxel) is the most effective strategy for treating anaplastic thyroid cancer, compared to other combinations such as G207 and NV1023 or paclitaxel and doxorubicin. However, the mechanism behind the synergy effect of G207 and paclitaxel remains unknown, and measuring the synergy effect over time is challenging and expensive. In this study, we formulated a mathematical model to quantify the synergy of G207, paclitaxel, and both over time using the dataset. We conducted a Bayesian estimation of tumor cell proliferation over 16 days using Markov chain Monte Carlo sampling. The Bliss independence was incorporated into the model to compare the observed and expected responses to combination therapy. The expected antitumor effect was significantly lower than the experimental data, suggesting a synergistic effect. Our result showed that the antitumor effect was influenced by the rate of inhibition of tumor growth and the absolute growth delay. Additionally, we found that combination therapy achieved an additional 24% antitumoral effect and a 12-day delay in cell growth. This modeling approach suggests the possibility of quantifying synergistic effects.</p>\u0000 </div>","PeriodicalId":50653,"journal":{"name":"Complexity","volume":"2024 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/cplx/3899849","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142692028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance Evaluation of Control Strategies for Autonomous Quadrotors: A Review 自主四旋翼飞行器控制策略的性能评估：综述

IF 1.7 4区工程技术

Complexity Pub Date : 2024-11-20 DOI: 10.1155/2024/8820378

Hamid Hassani, Anass Mansouri, Ali Ahaitouf

引用次数: 0

Chaotic Image Encryption Scheme Based on Improved Z-Order Curve, Modified Josephus Problem, and RNA Operations: An Experimental Li-Fi Approach 基于改进的 Z 阶曲线、修改的约瑟夫问题和 RNA 运算的混沌图像加密方案：一种实验性 Li-Fi 方法

IF 1.7 4区工程技术

Complexity Pub Date : 2024-11-18 DOI: 10.1155/cplx/2910833

S. B. Nono Fotso, J. H. Talla Mbé, W. N. Atchoffo, A. C. Nzeukou, A. R. Ndjiongue

{"title":"Chaotic Image Encryption Scheme Based on Improved Z-Order Curve, Modified Josephus Problem, and RNA Operations: An Experimental Li-Fi Approach","authors":"S. B. Nono Fotso, J. H. Talla Mbé, W. N. Atchoffo, A. C. Nzeukou, A. R. Ndjiongue","doi":"10.1155/cplx/2910833","DOIUrl":"https://doi.org/10.1155/cplx/2910833","url":null,"abstract":"<div>\u0000 <p>Image encryption schemes are predominantly software-based. Only a select few have been implemented in real-life communication systems. This paper introduces a novel chaotic image encryption scheme based on a modified Z-order curve, a modified Josephus problem, and an improved Vigenère cipher–based ribonucleic acid (RNA) operation. It is implemented and assessed within a light-fidelity (Li-Fi) infrastructure, comprising two core components: software and hardware. The software component manages data encryption and decryption, while the hardware ensures efficient data transmission. The proposed encryption scheme starts with a pixel-level permutation based on an improved Z-order curve, applicable to rectangular images, optimizing efficiency and increasing permutation ability. This is followed by a bit-level permutation using a modified Josephus problem, which enhances the diversity of generated sequences and introduces additional dislocation effects. Subsequently, a Vigenère cipher–based RNA operation serves for diffusion alongside basic RNA operations and the cipher block chaining (CBC) mode. Theoretical analyses and experimental findings demonstrate that the proposed encryption scheme is highly robust, outperforming several existing cryptosystems. Moreover, owing to its successful implementation, the proposed encryption scheme signifies a compelling stride toward bolstering secure visible light communication systems.</p>\u0000 </div>","PeriodicalId":50653,"journal":{"name":"Complexity","volume":"2024 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/cplx/2910833","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142674049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Finite-Time Boundedness of Conformable Faulty Fuzzy Systems With Time Delay 有时间延迟的可变形故障模糊系统的有限时间有界性

IF 1.7 4区工程技术

Complexity Pub Date : 2024-11-15 DOI: 10.1155/2024/8594462

Mohamed Rhaima, Hamdi Gassara, Lassaad Mchiri, Abdellatif Ben Makhlouf

引用次数: 0

Spatiotemporal Differences in Regional Tourism Efficiency: An Empirical Study From Guangdong Province, China 区域旅游效率的时空差异：中国广东省的实证研究

IF 1.7 4区工程技术

Complexity Pub Date : 2024-11-14 DOI: 10.1155/2024/5781877

Haifei Wang

{"title":"Spatiotemporal Differences in Regional Tourism Efficiency: An Empirical Study From Guangdong Province, China","authors":"Haifei Wang","doi":"10.1155/2024/5781877","DOIUrl":"https://doi.org/10.1155/2024/5781877","url":null,"abstract":"<div>\u0000 <p>The focus on high-quality development in regional tourism involves not only transforming the previous extensive development model and improving the efficiency of tourism development but also promoting the coordinated development of the tourism industry across different regions. Taking the 21 prefecture-level cities in Guangdong Province as the research object and guided by high-quality development, a tourism efficiency measurement index system that includes carbon emissions as an unexpected output has been established. By comprehensively applying methods such as the Super-SBM model, LISA temporal path, and standard deviation ellipse, this study addresses the neglect of spatial relationships in the existing literature and measures the tourism efficiency of Guangdong’s 21 prefecture-level administrative units from 2009 to 2019, exploring its spatiotemporal evolution and collaborative trends. The results show that during the research period, the average tourism efficiency in Guangdong Province was 0.807, at a medium–high efficiency level. Spatially, the tourism efficiency of the province is composed of a main peak and side peaks, with a general leftward shift of the main peak, a fluctuating decrease in peak height, and an expanding width. The evolution of spatial patterns reveals that regions with similar tourism efficiency in Guangdong tend to be spatially concentrated, with strong local stability and clear spatial dependency in the change process of tourism efficiency. The study’s insights suggest strategies for Guangdong’s tourism sector, advocating for technological innovation, sustainable development practices, and a robust evaluation framework. It emphasizes leveraging regional tourism assets, fostering collaboration, and promoting the “Great Lingnan Tourism Circle” for a balanced industry growth.</p>\u0000 </div>","PeriodicalId":50653,"journal":{"name":"Complexity","volume":"2024 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/5781877","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142642207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Western North American Cruise Shipping Network: Space Structure and System 北美西部邮轮航运网络：空间结构与系统

IF 1.7 4区工程技术

Complexity Pub Date : 2024-10-28 DOI: 10.1155/2024/9190221

Xumao Li, Chang Li, Zukun Long

引用次数: 0

Improving the Machine Learning Stock Trading System: An N-Period Volatility Labeling and Instance Selection Technique 改进机器学习股票交易系统：一种 N 期波动标签和实例选择技术

IF 1.7 4区工程技术

Complexity Pub Date : 2024-10-22 DOI: 10.1155/2024/5036389

Young Hun Song, Myeongseok Park, Jaeyun Kim

{"title":"Improving the Machine Learning Stock Trading System: An N-Period Volatility Labeling and Instance Selection Technique","authors":"Young Hun Song, Myeongseok Park, Jaeyun Kim","doi":"10.1155/2024/5036389","DOIUrl":"https://doi.org/10.1155/2024/5036389","url":null,"abstract":"<div>\u0000 <p>Financial technology is crucial for the sustainable development of financial systems. Algorithmic trading, a key area in financial technology, involves automated trading based on predefined rules. However, investors cannot manually analyze all market patterns and establish rules, necessitating the development of supervised learning trading systems that can discover market patterns using machine or deep learning techniques. Many studies on supervised learning trading systems rely on up–down labeling based on price differences, which overlooks the issues of nonstationarity, complexity, and noise in stock data. Therefore, this study proposes an N-period volatility trading system that addresses the limitations of up–down labeling systems. The N-period volatility trading system measures price volatility to address uncertainty and enables the construction of a stable, long-term trading system. Additionally, an instance-selection technique is utilized to address the limitations of stock data, including noise, nonlinearity, and complexity, while effectively reducing the data size. The effectiveness of the proposed model is evaluated through trading simulations of stocks comprising the NASDAQ 100 index and compared with up–down labeling trading systems. The experimental results demonstrate that the proposed N-period volatility trading system exhibits higher stability and profitability than other trading systems.</p>\u0000 </div>","PeriodicalId":50653,"journal":{"name":"Complexity","volume":"2024 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/5036389","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142525091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Who Leads Trends on Q&A Platforms? Identifying and Analyzing Trend Discoverers 谁在问答平台上引领趋势？识别和分析趋势发现者

IF 1.7 4区工程技术

Complexity Pub Date : 2024-10-19 DOI: 10.1155/2024/2011436

Yongning Li, Lun Zhang, Ye Wu, Tianlan Wei

引用次数: 0

Transient Stability Assessment Model With Sample Selection Method Based on Spatial Distribution 基于空间分布的样本选择方法的瞬态稳定性评估模型

IF 1.7 4区工程技术

Complexity Pub Date : 2024-10-17 DOI: 10.1155/2024/5231569

Yongbin Li, Yiting Wang, Jian Li, Huanbei Zhao, Huaiyuan Wang, Litao Hu

{"title":"Transient Stability Assessment Model With Sample Selection Method Based on Spatial Distribution","authors":"Yongbin Li, Yiting Wang, Jian Li, Huanbei Zhao, Huaiyuan Wang, Litao Hu","doi":"10.1155/2024/5231569","DOIUrl":"https://doi.org/10.1155/2024/5231569","url":null,"abstract":"<div>\u0000 <p>With the phasor measurement units (PMUs) being widely utilized in power systems, a large amount of data can be stored. If transient stability assessment (TSA) method based on the deep learning model is trained by this dataset, it requires high computation cost. Furthermore, the fact that unstable cases rarely occur would lead to an imbalanced dataset. Thus, power system transient stability status prediction has the bias problem caused by the imbalance of sample size and class importance. Faced with such a problem, a TSA model based on the sample selection method is proposed in this paper. Sample selection aims to optimize the training set to speed up the training process while improving the preference of the TSA model. The typical samples which can accurately express the spatial distribution of the raw dataset are selected by the proposed method. Primarily, based on the location of training samples in the feature space, the border samples are selected by trained support vector machine (SVM), and the edge samples are selected by the assistance of the approximated tangent hyperplane of a class surface. Then, the selected samples are input to stacked sparse autoencoder (SSAE) as the final classifier. Simulation results in the IEEE 39-bus system and the realistic regional power system of Eastern China show the high performance of the proposed method.</p>\u0000 </div>","PeriodicalId":50653,"journal":{"name":"Complexity","volume":"2024 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/5231569","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142447781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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