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检索条件"丛书名=Statistics and Computing"

共 65 条记录，以下是1-10 订阅

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Neighbor sum distinguishable k-edge colorings of the join with two graphs

Neighbor sum distinguishable k-edge colorings of the join wi...

引用

2021 International Conference on statistics, Applied Mathematics, and computing Science, CSAMCS 2021

作者： Yang, Huan Tian, Shuangliang Gathering Stars School of Digital Economy Haikou University of Economics Haikou570100 China Mathematics and Computer Science College Northwest Minzu University Lanzhou730000 China

ISBN: (纸本)9781510652026

In this paper, we inquire into the neighbor sum distinguishable edge coloring of join graph, and it's neighbor sum distinguishable chromatic number was considered. Let G be a complete graphs with order n, and H is a path or circle, we obtains exact value of the neighbor sum distinguishable chromatic number with respect to the join of graphs G and H, its value is 2n. © COPYRIGHT SPIE.

关键词： Graph theory

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Limiting process of symmetric simple random walk

Limiting process of symmetric simple random walk

引用

2021 International Conference on statistics, Applied Mathematics, and computing Science, CSAMCS 2021

作者： Zhao, Zimeng School of Mathematics and Statistics Xi an Jiaotong University No.28 Xianning West Road Xi'an City710049 China

ISBN: (纸本)9781510652026

In the present era, the study of stochastic process is getting more and more significant, in case that nearly nothing can be examined in a static sight and most of them are in an evolving procedure. In this article, we focus on one of the most common and most frequently used model, symmetric simple random walk, and discussed its property in R. Firstly, we review the basic terminology in the study of probability theory and stochastic process, clarify the basic concepts as distribution function, expectation, variance, independence, etc.;meanwhile, introduce two 0-1 laws. Then, we summarize the laws of large numbers and central limit theorem, in the order of definition of convergence, weak law, then strong laws;after that, the characteristic functions, the concept of independent and identical distribution, then comes to the Lévy central limit theorem. These parts are all for the preparation of the main conclusion: A limiting process of a symmetric simple random walk is a Brownian process. In this part, we start from the construction of symmetric simple random walk, then create a path to the limiting statue, and prove the final conclusion with the use of the concepts introduced previously;and finally, discuss several properties of Brownian motion;the limiting process of random walk. © COPYRIGHT SPIE.

关键词： Stochastic systems

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Analysis of health resource allocation in 11 cities in Jiangxi based on the rank sum ratio

Analysis of health resource allocation in 11 cities in Jiang...

引用

2021 International Conference on statistics, Applied Mathematics, and computing Science, CSAMCS 2021

作者： Zhang, Junru Shen, Yuling Wu, Haibo School of Economics and Management Jiangxi University of Chinese Medicine Nanchang China

ISBN: (纸本)9781510652026

In order to comprehensively evaluate the health service situation in Jiangxi, based on the rank-sum ratio method, select the number of health institutions per 1000 population, the number of beds per 1000 population, the number of practicing (assistant) physicians per 1000 population, the number of registered nurses per 1000 population, and the ratio of doctors to nurses. Five indicators were used to calculate the current health resource allocation of 11 cities in Jiangxi in 2019. The result of RSR evaluation was Xinyu was No. 1 and Fuzhou was No.11. The results showed that the allocation of health resources in Jiangxi in 2019 was uneven, and it was necessary to optimize the allocation of resources from the supply side to improve the accessibility of residents to medical treatment. © COPYRIGHT SPIE.

关键词： Resource allocation

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Image analysis of energy structure and linear regression prediction on sustainable energy

Image analysis of energy structure and linear regression pre...

引用

2021 International Conference on statistics, Applied Mathematics, and computing Science, CSAMCS 2021

作者： Yan, Yixuan Department of Mathematics and Statistics University College London Gower Street LondonWC1E 6BT United Kingdom

ISBN: (纸本)9781510652026

The depletion of energy and the environmental pollution caused by burning energy are serious problems all over the world. There is still no new energy source that can take place of the combustibility source. The best way at present is an energy transition using existing renewable energy sources. In this paper, the author analyzed the amount of total energy consumption (TEC) over the past 40 years and how coal, petroleum, gas and primary energy and other energy (PEE) accounted in TEC. The purpose of this study is to decide the trend for each energy, therefore giving a clearer perspective for the change of energy structure and the increasing rate of consumed PEE. Then constructs two different linear regression models (LR) to determine the future of PEE by analyzing the predicted proportion of PEE consumed in TEC. The linear regression models were analyzed across regression equations, regression coefficients, p-values, the goodness of fits (Multiple R-squared) and confidential interval. The author also drew figures to do the residual error fitting test, residual normality test, residual-variance equality test and outliers' test. The goal for test models is to find a better model to decide a more precise value of the proportion of PEE, such that observe the increasing process of sustainable energy and give a clearer perspective of the transformation of energy structure. The multiple R-squared of a linear model with all data in the dataset is 0.87 and the accuracy of testing improved to 0.9 by eliminating outliers. The multiple R-squared of the nonlinear model is a greater number of 0.94. In conclusion, the future proportion of sustainable energy and the rate of increase can be predicted by these two models. The PEE can take a larger part in China's energy construction so as to solve current problems. © COPYRIGHT SPIE.

关键词： Machine learning

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Influencing factors and the path to realization of carbon balance in China: Analysis using statistical models

Influencing factors and the path to realization of carbon ba...

引用

2021 International Conference on statistics, Applied Mathematics, and computing Science, CSAMCS 2021

作者： Wang, Wenjun Tian, Chunyan International Business School Shaanxi Normal University Xi'an China

ISBN: (纸本)9781510652026

Using a STIRPAT model combined with statistical data of 1988 to 2013, this study empirically analyzes the effect of diverse factors on China's carbon balance. These include economic level, urbanization level, population size, industrial structure, energy intensity, and energy consumption structure. We find that economic growth, population increase, and urbanization advance increase net carbon emissions, whereas industrial restricting, energy efficiency improvement, and energy consumption restructuring reduce carbon emissions. Specifically, economic growth and energy consumption restructuring constitute primary causes of the increase and decrease in net carbon emissions, respectively. © COPYRIGHT SPIE.

关键词： Least squares approximations

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A regression analysis method based on big data research to calculate river loss

A regression analysis method based on big data research to c...

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2021 International Conference on statistics, Applied Mathematics, and computing Science, CSAMCS 2021

作者： Xiao, Yujian Wang, Huiwen Zhou, Lijuan Xinjiang Water Resources Department Uluwati Water Conservancy Project Management Bureau Hetian848000 China Hydraulic Engineering Department Nanjing Hydraulic Research Institute Nanjing210029 China Xinjiang Water Resources Department Network Information Center Uluqi 830000 China

ISBN: (纸本)9781510652026

In order to study the law of river loss to predict the amount of water available in the future and protect water resources, this paper is based on big data collection and analysis, taking the Hotan River Basin in a typical arid desert area as an example, using the principle of water balance and statistical methods. Also, this article puts forward a prerequisite that needs to be met to establish a calculation formula for river water loss. The results show that the monthly river damage and inflow from the lower section of the rivers in the region are highly correlated with the inflow of the upper section, which is a practical method for forecasting the amount of water loss in the river. © COPYRIGHT SPIE.

关键词： Rivers

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Predicting urban PM2.5 concentration based on principal component analysis and BP neural network

Predicting urban PM2.5 concentration based on principal comp...

引用

2021 International Conference on statistics, Applied Mathematics, and computing Science, CSAMCS 2021

作者： Ying, Yiping Zhejiang University School of Mathematics Hangzhou China

ISBN: (纸本)9781510652026

Ambient air pollutants have a direct influence on the human body and the environment, and accurate prediction of PM2.5 concentration is very crucial for air quality control. This paper aims to provide a reasonable model to predict and analyze PM2.5 concentration data of Hangzhou. Forty-five sample data from ten meteorological observation points in Hangzhou in June and July 2021 were selected;factors including PM2.5, PM10 and daily temperatures as input. The BP neural network model is often used to predict the concentration of PM2.5. However, due to large dimension of the input elements, it often reduces the efficiency. To handle the problem, principal component analysis (PCA) is utilized in the input layer to achieve the goal of dimensionality reduction. By training the training-set, the network model structure is determined, and prediction accuracy is tested. As a conclusion, PCA-BP neural network performs equally well compared with BP neural network, while it can significantly save the calculation time and simplify the network structure. © COPYRIGHT SPIE.

关键词： Principal component analysis

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Analysis of ambient air quality in Xi'an during the thirteenth five-year plan period

Analysis of ambient air quality in Xi'an during the thirteen...

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2021 International Conference on statistics, Applied Mathematics, and computing Science, CSAMCS 2021

作者： Yan, Yufei College of Life Science and Technology Central South University of Forestry and Technology Changsha410004 China

ISBN: (纸本)9781510652026

Based on the monitoring results of air pollutants in Xi'an from 2016 to 2020, based on the statistical analysis of its annual average concentration, monthly average concentration, Spearman's rank correlation coefficient, comprehensive index of ambient air quality and pollutant load factor in the past five years, the air quality of Xi'an was further understood. The results show that: (1) except for ozone, the annual average concentration of pollutants in Xi'an showed a downward trend, and the monthly average concentration showed a "U"shape except ozone. The concentration increased obviously in autumn and winter, the pollution was more serious, and the air quality improved obviously in spring and summer. (2) TSP is the main air pollutant in Xi'an for five years. Although the concentration of TSP is decreasing, it still needs to be improved. (3) According to the correlation analysis of various air pollutants, PM10 and PM2.5 show significant positive correlation, and PM2.5 and PM10 have high homology with SO2, CO, NO2. © COPYRIGHT SPIE.

关键词： Air quality

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Construction of the Winning Factor Evaluation System of National Sports College Men's Basketball League Based on Analytic Hierarchy Process 2

Construction of the Winning Factor Evaluation System of Nati...

引用

2nd International Conference on statistics, Applied Mathematics, and computing Science, CSAMCS 2022

作者： Su, Songpeng Li, Linjing Department of Sports Training Guangzhou Sport University Guangzhou China Department of Physical Education Guangdong University of Foreign Studies Guangzhou China

ISBN: (纸本)9781510663183

Taking the participating teams of the National Sports College Men's Basketball League in 2021 as the research object, a mathematical evaluation system was established through the Analytic Hierarchy Process. The degree of influence of each factor was quantified and the evaluation system for the winning factors of the National Sports College Men's Basketball League was established. The results show that the SCBA league winning factor evaluation system includes 6 primary indicators, and each primary indicator includes 4 secondary indicators. The construction of this system will help the participating institutions to improve their competitiveness and provide strong support for the construction of China's competitive basketball reserve talent team. © 2023 SPIE.

关键词： Analytic hierarchy process

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Jackknife Empirical Likelihood for the Gini Index with Right Censored Observations 2

Jackknife Empirical Likelihood for the Gini Index with Right...

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2nd International Conference on statistics, Applied Mathematics, and computing Science, CSAMCS 2022

作者： Xie, Xiaojing School of Mathematics South China University of Technology Guangzhou China

ISBN: (纸本)9781510663183

Estimators of the Gini index have been proposed and widely utilized for interval estimation and hypothesis testing in economics. In this paper, jackknife empirical likelihood (JEL) is developed for the Gini index with right censored observations. We prove the limiting distribution of JEL ratio statistics and construct the confidence intervals for the Gini index. Comparative simulation studies with existing methods demonstrate that our methods do better in coverage probability and average length. © 2023 SPIE.

关键词： Statistical analysis Monte Carlo methods Analytical research Mathematics Statistical inference

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