bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on Airline Fuel Hedging Strategies-Case Analysis and Strategy Design
Authors: Zou Wenqing
Published: August 2024

The paper examines the impact of soaring international oil prices since 2000, especially on the airline industry, which is highly sensitive to fuel costs due to its significant share in operational expenses. The volatility in fuel prices, driven by various factors including geopolitics and market demand, has compelled airlines to adopt risk management strategies, such as financial hedging and technological innovations, to safeguard against unpredictable price swings and secure their profitability. A notable instance highlighted is the 2008 oil price crash, which resulted in a drastic reduction in fuel expenses, benefiting airlines, although those with hedging positions faced losses. Contrastingly, Southwest Airlines demonstrated financial resilience through effective hedging, which is the focus of this paper. The study delves into Southwest Airlines' strategic use of hedging mechanisms, like call options and collar structures, attributing its low-cost strategy success to these practices. Furthermore, it contrasts Southwest's hedging techniques with Delta Air Lines', providing insights for a customized hedging approach for Delta. Utilizing simulation analysis on historical oil prices and airline operational data, the research emphasizes the importance of aligning hedging strategies with market conditions and forecasts, aiming to offer guidance for airlines on proficient jet fuel hedging.
Research on Optimization Design of Heliostat Field Based on Particle Swarm Optimization Algorithm
Authors: Yang Mengbo , Ren Shuqi
Published: August 2024

In the optimization design process of heliostats, this article constructs physical equations by establishing a spatial Cartesian coordinate system and quantifies the obtained data. The penalty function is used to intervene in the particle swarm intelligence algorithm and iterate repeatedly to obtain the optimal parameters. Firstly, the coordinates of the heliostat were visualized in three dimensions, and a spatial Cartesian coordinate system centered on the light collecting tower was established. Use the two-dimensional relationships between internal components of the system to calculate the angle between incident and outgoing rays and reflected rays, and then calculate the cosine efficiency. Secondly, based on the calculation of the sun's altitude angle and azimuth angle, the shadow occlusion efficiency was obtained. Finally, the known formula is used to calculate the annual average optical efficiency, which is 71.14%. The output thermal power is 42.628 MW, and the annual average output thermal power per unit mirror area is 0.678249917 kW/m2.
Examining Green Innovation and Digital Transformation as Essential Factors of Sustainable Performance
Authors: Lu Sijie
Published: August 2024

As digital transformation continues to advance at a rapid pace, the imperative for innovating and transforming business models becomes increasingly pronounced, underscoring the significance of business sustainability. Delving into the sustainable performance of enterprises holds the potential to not only identify underlying risks and foster robust operations but also bolster the trajectory of a company's sustainable development. This study scrutinizes the impact of sustainable technologies on enterprise sustainability performance, with a keen focus on the interplay between digital transformation and green innovation as delineated in the existing literature. Findings suggest that the relationship between digital transformation and sustainable performance is intricate, and influenced by a multitude of factors. Moreover, green innovation emerges not only as a direct driver of sustainable performance but also as a facilitator of digital transformation, thereby amplifying its role in fostering sustainable development within enterprises. By examining these dynamics, this research aims to provide insights that can inform strategic decision-making aimed at enhancing sustainability within organizations.
Study on Illegal Trade in Wildlife Based on AHP and ARMI-Intervention-SVR Series Models
Authors: Tang Yingping , Wang Xinle , Chen Mingle
Published: August 2024

This study looks at the environmental impact of the illegal trade in the world's fourth largest wildlife and aims to combat it. By setting two project objectives, namely strengthening law enforcement and enhancing community economic capacity, with the government as the focus client. In the data processing stage, the government of Vietnam was identified as the target client by assigning weights using the Analytical Hierarchy Processing (AHP) and entropy weighting methods and combining the weights through the Minimum Information Entropy (MIE) and Lagrange Multiplier (LM) methods. In terms of project impact quantification, an intervention analysis model is introduced to establish the ARMI-Intervention-SVR series of models, and the PSO algorithm is used to find the best fitting parameters of the SVR model to improve the model performance. After combining the intervention prediction models, it was concluded that the impact of the Vietnam project on the five-year transaction volume of illegal wildlife trade was 31.22 per cent, 28.87 per cent, 18.25 per cent, 13.77 per cent and 12.31 per cent, respectively. These results provide an important reference for effectively combating illegal wildlife trade and are of practical significance.
Integrative Spatial Modeling for Ecosystem Management: A Case Study in Maasai Mara
Authors: Gu Zhuchang , Sun Weiyi , Li Ruilang
Published: August 2024

This study presents a generalized approach to wildlife management by introducing two adaptable models suitable for environments with varying data availability. Utilizing a Gridded Species Distribution Model and a Min-Max Model that incorporates the Simplified Floyd-Warshall Algorithm, we demonstrate a methodology capable of mapping species distributions and enhancing monitoring efficiency in habitat-rich reserves. The Gridded Model, through Optimized Hot Spot Analysis, successfully delineates critical habitats, and the Min-Max Model efficiently places monitoring stations, considering Kenya's technological landscape and data collection capabilities. Collectively, these models underpin a versatile and strategic framework, reinforcing conservation efforts in the Maasai Mara and suggesting potential for application in other contexts where similar ecological and resource challenges exist.
Research and Implementation of Java Code Automatic Generator Based on UML
Authors: Liu Shugang , Gao Xiaotian
Published: August 2024

As a model-based tool, automatic code generation technology has been known and used by more and more developers due to its efficiency and convenience. This article combines UML and automatic code generation technology, proposes the conversion rules between UML model diagrams and Java code, and uses object-oriented and modular design ideas to divide the Java code automatic generator into input layer, data verification layer, and code. Generation layer, each layer uses the form of a unified interface for data exchange. Designed and implemented a Java code automatic generator based on UML model diagram. The main contents of this paper are as follows:(1)Study the mapping rules for converting UML class diagrams and sequence diagrams into Java code, extract the elements and relationships of various model diagrams, build a metamodel of UML model diagrams, and study the mapping between metamodels and Java statement-level code Relationship, and put forward sentence-level code conversion rules.(2)Using DOM, Xpath and trufun-plato plugins to parse the metadata in UML model diagrams. Through the previous study of UML class diagrams, sequence diagrams and state diagrams to the mapping rules of Java code, the coding realized automatic generation of Java code based on UML And verified the proposed Java code mapping rules.Through tests and practical use proofs, the UML model-based automatic Java code generator can convert UML model diagrams into parts of Java code, verifying the correctness and feasibility of the rules studied.
Research on the Policy and Practice of Urban Village Reconstruction under the Background of Chinese Characteristic Land System
Authors: Tian Chunzhou
Published: August 2024

With the development of China's urbanization, urban village has become a more common phenomenon in the city, and the villages around the city have become part of the city. The land price of urban village in the city is relatively high, but the land of urban village has not been well used. The problem of urban villages is a new urbanization problem, and the government's land system for urban villages is constantly changing. The reform of China's land system has a great impact on the policy of urban village reconstruction, and the reform of land system lays the foundation for the policy of urban village reconstruction. The main part of the body mainly reflects on "urban village development policy" and "land system reform", so as to analyze the reasons for the formation of urban villages and the reform of land system. This paper summarizes the analysis of the relationship between urban village reconstruction and China's land system reform in literature, and puts forward corresponding policy suggestions.
Calculation Method and Simulation Study of Optical Efficiency of Fixed-Heaven Mirror Field
Authors: Yue Junlan , Guan Wang , Lu Hongyi
Published: August 2024

Tower solar thermal power generation is an environmentally friendly new clean energy technology. This paper lays the foundation for constructing a heliostat mirror field with optimal annual average thermal power per unit mirror area by solving the annual average optical efficiency, annual average output thermal power and annual average output thermal power per unit cross-section area for a specific heliostat mirror field. This paper begins with calculating the solar altitude angle and azimuth angle at different times, and derive the normal equation of each heliostat. The specular reflection is studied by taking 100 uniform discrete points on a specular surface and establishing a specular coordinate system, which is used to calculate the ratio of the blocked light to the total light of a single specular surface to indicate the shadow blocking efficiency. The dispersion of light in a single light cone is simulated by establishing a light cone coordinate system for the reflected light, and the ratio of the number of light captured by the collector to the total light is calculated to indicate the truncation efficiency; then the cosine efficiency is calculated by the angle of incidence, and the average annual optical efficiency, average annual output thermal power, and average output thermal power per unit of mirror area are finally derived from the formulas in the relevant literature, and the results are 0.5408, 16.2327 MW, and 0.2584 kW/m2, respectively.
Study On River Regulation and Emergency Management Based on SARIMA And Dam Control Models
Authors: Zhang Yihuai , Li Kenuo
Published: August 2024

Across the globe, with population growthand climate change, improving the accuracy and responsiveness of water resource management is crucial for ensuring water security. This study takes the establishment of an optimal water level control system for the Great Lakes in North America as its starting point. It comprehensively considers the changes in flow rates of six major rivers that affect the water level fluctuations of the Great Lakes, using SARIMA models to forecast the seasonal variations in the flow rates of these rivers. Considering the complexity of lake systems, this article introduce lag factors, sensitivity factors, and emergency control factors to establish a dam control model for the Great Lakes. After effective evaluation of the model, under this control system, the simulated water levels of the Great Lakes are close to the optimal levels and exhibit good emergency response capabilities. Applying data from the Great Lakes in 2017 to the aforementioned control system, the results show that the average difference between simulated values and optimal values is 0.125, indicating a well-regulated control system and effective enhancement of water level control efficiency for the Great Lakes.
Correlation Between Inflation and Real Estate Prices: Case Analysis of China and the United States
Authors: Chen Yuxuan
Published: August 2024

Establishing economic theory suggests a correlation between inflation and asset prices, and real estate price is a typical form of asset prices. This study empirically examines real estate prices and inflation data in China and the United States from 2006 to 2023, drawing on existing economic theories and relevant data. The analysis reveals an inherent interaction mechanism between inflation and real estate prices in both countries. It is observed that fluctuations in real estate prices positively affect inflation in both China and the United States. However, the effect of inflation change on real estate prices is different between the two countries, as China's inflation rates exert a negative influence on real estate prices, contrasting with the situation in the United States. These results contribute to a deeper understanding of the intrinsic relationship between inflation rates and real estate prices, providing a theoretical basis for developing macroeconomic policies, enhancing inflation monitoring, and managing real economy markets.
The Financing Model Difference Between Poly Development and Country Garden
Authors: Yuan Xinyan
Published: August 2024

As a matter of fact, real estate is one of the pillar industries of economic development. As an asset-intensive industry, the development of real estate needs a large amount of effective capital investment, and how to obtain and rationally use funds has become the top priority. The case analyzed in this paper is the financing mode difference between two listed real estate enterprises, Poly Development and Country Garden. Through the analysis of some specific financial indicators, the different financing modes of these two companies are studied, so as to provide reference significance for the financing of future real estate enterprises. Finally, an important conclusion is drawn: real estate companies should pay great attention to whether the debt ratio is matched with their own repayment ability, otherwise the liquidity problem may lead to the company's capital turnover difficulties and be unable to operate, and the corresponding economic system support can improve the status quo. This research helps to provide lessons and solutions for real estate financing.
Research on Marketing Strategies in the Online Tourism Market in the Internet Age
Authors: Wang Yidan
Published: August 2024

The emergence of online tourism in China can be traced back to 1999. With the gradual popularization of the Internet and technological advancements, it has brought a new opportunity to the domestic tourism market. Following the first Golden Week of tourism, some sharp entrepreneurs recognized the enormous potential of online tourism and established distinctive online travel companies, marking 1999 as the "first year of online tourism." Compared to traditional travel methods, online tourism offers users unprecedented experiences. Travelers no longer need to visit travel agencies for inquiries, comparisons, and bookings. Instead, they can browse various travel routes, hotels, flight tickets, and other information anytime, anywhere using computers or mobile phones, and make reservations, payments, and inquiries online. Moreover, enterprises can collect user data, analyze user needs, formulate precise marketing strategies through online platforms, and apply this information to product development, service improvement, and brand promotion, thereby enhancing marketing effectiveness and user satisfaction.
Kem Weber’s Influence in Immersive Office Design
Authors: Sun Shifandi
Published: August 2024

How much does your environment shape you, and how much of your environment is designed? In this paper, we will use the Disney animation office designed by Kem Weber as a primary topic to help us better solve those questions. This particular Disney animation office is very special when it comes to this as it is an attempt to create an immersive environment aimed to better the work of animators who work in them. Kem Weber has done a very good job in actually achieving this, with how it is user-centered and carefully detail oriented, the whole office as a system was designed. The paper will use Kem Weber's design of the Disney animation office as a case study to examine his design philosophy, principles, and their inspiring role in today's office and furniture design. This case integrated user-centered design and meticulous attention to detail to create an environment that not only supported but enhanced the creative processes of the animators who worked there.
Development Status, Problems and Countermeasure Analyses of Real Estate Industry
Authors: Jin Xiangkai
Published: August 2024

As one of the important economic pillars in China, the real estate economy has played an indispensable role in China's economic development, and the development of China's real estate industry is facing an inflection point, and ordinary old hundred. The daily life of the family name is closely related to the healthy development of the national economy Due to the impact on the macroeconomic aspect of the economy, investors no longer want to invest in real estate and the excessive inventory occupies national resources, which leads to the current situation of the real estate industry getting out of control. This paper describes the current situation of the real estate industry, existing problems and countermeasures one by one, so as to provide help for the stable development of the real estate industry and the healthy development of the economy, so as to promote the sustainable development of China's economy.
Analysis of the Principle and Application of Nash Equilibrium
Authors: Tian Tongfei
Published: August 2024

The Nash equilibrium stands as a fundamental concept in the realm of game theory. And this theorem offering a predictive framework for the outcomes of strategic interactions among rational entities. Introduced by John Nash in 1950, this concept has become an indispensable tool across multiple disciplines, including economics, political science, and biology, where decision-making is mutually dependent. At its core, Nash equilibrium is achieved when no participant can gain by solely changing their strategy, assuming others and maintain theirs. This study explores the principle of Nash equilibrium, tracing its historical roots, examining its current applications, and considering its future potential, thereby providing a thorough analysis of its influence on strategic decision-making. This research report is motivated by a desire to deepen the understanding of the Nash equilibrium's principles and its practical applications in modern scenarios. The framework includes a thorough literature review, an analysis of current applications, and the identification of limitations and future research directions for the Nash equilibrium.
Research and Application of Mobile Video Content Placement Based on Edge Computing
Authors: Yan Congling
Published: August 2024

In the era of the rapid development of computer technology and Internet, the traditional cloud server architecture and solutions have been unable to meet the needs of the huge Internet users, with the rapid development of mobile video, traditional server resilience, server cost and user experience has been unable to meet the needs of users and enterprises. Under this requirement, the edge computing platform based on kubernetes is emerged to solve the above problems. This paper first analyzes the development process and characteristics of kubernetes, and further discusses the application of mobile video cache strategy on kubernetes.
A Study on Maximizing Insurance Company Profits under Extreme Weather Events Based on an Optimization Model
Authors: Wen Kaiduo , Li Zuyu , Zhu Jiayi
Published: August 2024

This study investigates the ramifications of extreme weather events on property damage and the consequential claims pressure experienced by insurance companies. An optimization model is proposed to maximize insurance profits by balancing risk factors. Through this model, optimal insurance amounts are determined for two regions: Kentucky, USA, and Taiwan, China. In Kentucky, the predicted optimal insurance amount is $51,040.33, with insurers willing to bear maximum losses of $5,436.27. In Taiwan, the optimal insurance amount is $27,210.1, with maximum acceptable losses of $2,600.43. Furthermore, the study forecasts a decline in insurance amounts over time in Kentucky, attributed to factors such as population growth and real estate development. Additionally, a building conservation index model is introduced to aid in assessing and preserving valuable structures in regions unsuitable for insurance. This model offers a comprehensive approach to building preservation, incorporating cultural, historical, economic, social, and scientific values.
Innovation in the Economic Management of Enterprises in the Post-Financial Crisis Era
Authors: Sheng Wanying
Published: August 2024

With the arrival of the millennium, the sub-prime mortgage crisis began in 2008 with the collapse of Lehman Brothers in the United States and the sell-off of Merrill Lynch, and began to erupt and sweep the world. All sectors of the world were affected, with companies closing down at a loss or even a whole industry collapsing. The post-financial crisis era is also unpredictable, which requires enterprises to innovate their own management model, gradually improve the modern enterprise system, and improve their own corporate hard power. In this paper, we will explore the current situation of enterprise economic management from different perspectives.
Evaluation of Uncertainty in Cylindricity Measurement based on Coordinate Measuring Machine
Authors: Yang Yi , Wang Tao , Chang Yuzhou , Zhang Wei , Cao Mengcheng
Published: August 2024

According to the measurement method of cylindricity based on coordinate measuring machine (CMM), establish a black box evaluation model for the uncertainty of CMM cylindricity measurement, and analyze the sources of various uncertainties. Based on measurement examples, this paper elaborates on the evaluation process of cylindricity measurement uncertainty based on CMM, calculates the extended uncertainty based on CMM, and provides reference for the evaluation of cylindricity measurement uncertainty in CMM.
Research on Copyright Subjectivity in Generative Artificial Intelligence Production
Authors: Xu Jinxi
Published: August 2024

The birth and development of artificial intelligence, represented by ChatGPT, have brought a new singularity to the development of the economy and the transformation of society. How to deal with the legal issues related to generative artificial intelligence in the context of the technological singularity, so that the law conforms to the process of science and technology, will be a major problem now and even in the future. In order to reconcile the contradiction between the rapid development of generative artificial intelligence in the context of the times and the copyright legislation based on the concept of "anthropocentrism", a number of views have been put forward in the academic circles but they are not useful. Based on this, the inadequacy of the existing viewpoints was analyzed, break away from the framework of "anthropocentrism", and give artificial intelligence a limited legal subject status. Currently, according to the mainstream classification method of artificial intelligence, artificial intelligence can be divided into weak artificial intelligence, general artificial intelligence, and super artificial intelligence. Therefore, on the premise that AI-generated works constitute "works", according to the different degrees of intelligence of AI, the main criterion of contribution should be concerned with balancing the interests of multiple subjects in order to determine the attribution of AI-generated copyright rights and distribution plan.
Analyzing Tennis Match Momentum: Factor Analysis of Player Performance in the 2023 Wimbledon Men's Singles Tournament
Authors: Chen Shaohang , Chen Jiacheng , Li Jinzhi , Li Lei , He Bo
Published: August 2024

This paper discusses a model developed for capturing the flow of play in tennis matches, particularly focusing on player performance and match momentum using factor analysis and data from the 2023 Wimbledon Tennis Men's Singles Tournament. The model involves categorizing data labels into serve, return, and score sessions, extracting key technical indicators, conducting factor analysis, and quantifying momentum scores. The analysis includes correlation tests, variance contribution rates, and factor score coefficient matrices to derive principal factors and calculate player performance scores. The momentum score expression and its application in analyzing match flow and player performance are also discussed, validated using match results from the tournament.
Strategic Evolution and Competitive Analysis of Apple Inc.: Embracing Business Model Innovation and Technological Advancements in the AI and VR Era
Authors: Zhao Zicheng
Published: August 2024

With the rapid development of science and technology, the update speed of consumer electronics products is also changing rapidly. As a leading consumer electronics product enterprise, Apple has also attracted a lot of attention. In the past decade, Apple has led the development of the whole market through its strong core competitiveness, including advanced design concepts and excellent products. Now it has stepped into a new era, and VR and AI products will be the trend of the future. Therefore, this paper will discuss whether Apple can use the SWOT model and the Porter five-force model in the new era.
Theoretical Performance Comparison of Lithium Batteries
Authors: Chen Yiming , Zuo Wenxing
Published: August 2024

A traditional energy supply is unable to address the needs of sustainable development dedicated strategy, a crisis in earth’s has enhanced on the rise of power lack while mankind becomes facing that much annoyance due to natural pollution problems that are arising from energy. Precisely, this is the need for modern development of new energy and from the economic aspect that focuses on a large-scale application, efficiency, production as well as balancing other dimensions; lithium-ion batteries are deemed future most of new energy battery. The diaphragm limits the lithium-ion battery performance to some point, but traditional diaphragms have impurity many problems that make it affect the battery performance negatively. In this paper, the structure, safety and performance of lithium-ion batteries are evaluated. It is found that lithium-ion battery can enhance the porosity and polar electrolyte compatibility of the beginning polypropylene diaphragm as well as stabilizes attapulgite nanoparticles modified by the made up of polypropylene artificial membrane. Attapulgite nanoparticle cost is a significant portion of its benefits at the same time. Because attapulgite nanoparticles may improve the electrochemical kinetic reaction process and high interface resistance of polypropylene diaphragms more than lithium-ion batteries, the modified diaphragm based on surface covalent reaction technique has a significantly lower value of the polarization voltage. Also, at various C densities lithium-ion batteries can be significantly enhanced attapulgite modified poly propylene membranes. Finally, lithium-ion battery technology should have broad application prospects.
A Multidimensional Measurement Framework and Changing Trends of Urban Households on The Edge of Subsistence Allowance in China
Authors: Liang Jiaxin
Published: August 2024

As poverty reforms deepen, the issue of urban households on the edge of subsistence allowance in China has become increasingly pronounced. Based on the five reports from the China Family Panel Studies conducted in 2012, 2014, 2016, 2018, and 2020, this study employs the Alkire-Foster (AF) method to measure the multidimensional marginal status of urban households on the edge of subsistence allowance across four dimensions, including material well-being, education, health, and social security. Furthermore, it decomposes the multidimensional marginal index to further understand the factors influencing the multidimensional marginal status of urban households on the edge of subsistence allowance. The research findings indicate the following: the construction of a multidimensional measurement framework for urban households on the edge of subsistence allowance is rational; the incidence of multidimensional marginality is decreasing; and the education dimension has the greatest impact on the multidimensional marginal status.
Analyzing the Impact of Marketing Strategy: A Case Study of Nike Air Max 1
Authors: Shan Yuying
Published: August 2024

During the 1980s, the running shoe market in the United States of America saw a period of significant growth and advancement. The inaugural running shoe featuring an open-air cushion, known as the Air Max 1, was introduced by Nike and garnered significant acclaim from both customers and the sports industry. This research integrates global examinations of Nike's marketing strategy with the analysis of measurement data from prior studies on the determinants of consumers' purchase intention as examined through the lens of the marketing mix theory. The findings of this study indicate that Nike's product design, promotion strategy, and pricing have a significant impact on consumers' purchase intentions. Additionally, this study provides marketing recommendations for Nike in the present market landscape. The purchase intention of consumers is influenced by pricing strategies aligned with market positioning, thereby providing Nike with valuable marketing recommendations within the present market landscape. When considering product design, it is recommended that Nike prioritize individualized design as a means to augment consumer engagement with the product. In relation to promotional tactics, Nike ought to enhance customer attraction and augment buy intention through the implementation of co-branding initiatives with renowned intellectual properties (IPs) and collaborations with celebrities across diverse domains. Nike should implement a varied price plan to appeal to consumers with varying levels of purchasing power and budgets.
Sex Ratio of Lampreys Based on Logistic and Lotka-Volterra Model
Authors: Wang Yiqiao , Xiao Boyu , Zhi Xiangrui
Published: August 2024

In this paper, we investigated the ecosystem impacts of changes in the sex ratio of the lampreys by means of a logistic population model and a Lotka-Volterra predator model. The results showed that the sex ratio of lampreys was closely related to predator scarcity, and that self-regulation of sex ratio promoted population growth but had a time lag with the number of predators. The Lotka-Volterra model was further improved to verify the ecosystem stability of the sea lamprey under different sex ratios. The study suggests that regulating sex ratios maintains ecosystem stability and provides insights into ecosystem interactions.
Influence and Contribution of Green Building on Urban Economy
Authors: Chu Xianglong
Published: August 2024

Nowadays, the excessive demand for buildings in cities leads to environmental pollution, population explosion, and low urban production efficiency. It is urgent for cities to meet the requirements of new standard buildings and new urban planning. As the bearer of urban functions and the inheritor of urban culture, architecture plays an important role in the city. There is a strong correlation between architecture and urban economic development, and even the development of other aspects of the city. In September 2020, China clearly put forward the goals of "carbon peak" in 2030 and "carbon neutrality" in 2060. At the same time, as of November 2023, 145 countries have announced or are considering achieving the goal of net zero emissions. Under the background of energy conservation and emission reduction, how to develop the urban economy and how to build green buildings has become a problem of the times. This paper integrates the relevant data, takes green building as the entry point, takes the Leadership in Energy and Environmental Design (LEED) green building certification system of the United States (hereinafter referred to as LEED) as the green building certification standard, and analyzes the development of green building in China and its impact and contribution to China's urban economy. It is expected that this paper can inspire the construction of green buildings and the related thinking of urban economic development.
An Investigation of Urban Heat Island Effect and Environmental Livability based on Remote Sensing Methods
Authors: Li Ziyan
Published: August 2024

Rapid urbanization has led to an increase in the urban heat island (UHI) effect. The UHI effect leads to localized high temperatures, reduced air quality, increased risk of heat stress and other diseases among residents. At the same time, it also reduces socialization among residents. Remote sensing technology, with its advantages of quantification, automation and real-time, can be used to analyze the UHI effect and further assess the livability of cities. In this paper, based on remote sensing image processing methods, the indexes of land surface temperature (LST), normalized vegetation index (NDVI), normalized difference build-up index (NDBI), and urban heat island intensity (UHII) were selected to analyze the scope of influence of UHI and urban livability. The important index of urban livability is human comfort, while UHI affects human comfort by influencing temperature and humidity. This paper concludes that the UHI effect is mainly reflected in the significant decrease in NDVI value and the significant increase in NDBI value. Meanwhile, there is a linear regression relationship between UHI and urban livability. In addition, UHI increases urban energy consumption and decreases environmental quality, destroying livability. This paper has proposed green city programs such as green roofs and cool sidewalks to improve the urban spatial structure. However, such programs still have the limitations of lower efficiency and higher cost. Therefore, in the future, UHI will be mitigated at the source by directly reducing solar radiation.
The Impact of the COVID-19 Epidemic on China’s Economy and the Policies Adopted by the Governments
Authors: Wang Penghe
Published: August 2024

China's ascent as a dominant force in the global economy underscores its significance as the world's second-largest economy and foremost exporter. However, this status also exposes China to a plethora of risks amidst the complexities of the global market. The eruption of the COVID-19 pandemic exacerbated these risks, precipitating a widespread economic downturn that posed significant challenges to China's economy across micro, meso, and macro levels. In response, the Chinese government swiftly implemented a series of comprehensive economic policies aimed at mitigating the pandemic's adverse impacts and facilitating the nation's economic recovery. These measures encompassed targeted interventions spanning from supporting individual businesses at the microeconomic level to implementing broader structural reforms at the meso and macroeconomic levels. Through proactive policy interventions and strategic maneuvering, China sought to stabilize its economy, reignite growth momentum, and enhance resilience against future uncertainties. This abstract highlight the multifaceted nature of China's response to economic challenges and underscores the pivotal role of government intervention in navigating turbulent economic landscapes while fostering sustainable growth and development.
A study of lamprey populations on ecosystem stability based on Lotka-Volterra modeling
Authors: Lu Hao , Qiu Bingchen , Chen Zhiyuan
Published: August 2024

The lamprey undergoes a major transition from larval to adult stages, and its sex ratio changes adaptively in response to food availability during the larval stage. This adaptive strategy allows lamprey to optimize their reproductive success under varying environmental conditions. However, the effects of this sex-ratio adjustment are not limited to the direct reproductive outcomes of lamprey, but also affect broader ecosystem dynamics and interrelationships between different species. To explore these effects, this study used mathematical and computational models to simulate the impacts of sex-ratio adjustments in lamprey populations in response to food availability. These models integrate ecological and evolutionary principles to predict how these adjustments will affect lamprey population dynamics and, in turn, the larger ecosystems in which they occur.
Current Situation and Development Trend of Hospice Care System “Based on Comparative Study of Existing Systems in Many Countries”
Authors: Zhao Yongjian
Published: August 2024

Nowadays, the aging trend of the global population is increasing, and people's desire to improve the quality of life in old age is becoming more and more strong. Hospice care is gradually recognized and accepted as a way of medical care. The service is mainly aimed at patients with terminal cancer, chronic diseases and dying patients, through the provision of physical, psychological, social and spiritual care, improve the quality of life of patients, so that they can enjoy dignity and peace in the final stage of life. This paper uses qualitative research methods to compare the hospice care system at home and abroad, so that we can see that the research on hospice care at home and abroad has achieved certain results. In foreign countries, hospice care has been widely recognized and applied, and has been guaranteed in laws, policies, medical systems and other aspects. In China, some big cities and medical institutions have begun to promote and apply, but it is still in the initial stage, China's hospice care still has a long way to go.
Analysis on the Problems and Suggestions in the Chinese A-Share Market
Authors: Sun Heqian
Published: August 2024

With the rapid development of economy, A-share market, as the main stock market in China, plays a very important role. In the past, people's understanding of the decline stocks was limited to the poor economic environment, but a series of problems in the fundamental A-share market resulted in stock stagnation and other phenomena. This paper analyzes the phenomena in the a-share market in detail and finds the root of the problems in the a-share market from different angles. The internal ownership structure of the listed company is too inclined, which leads to the loss of the rights and interests of other investors, and the lack of supervision, the frequent reduction of corporate shareholders, the equity of investors, and the truthfulness of public information authenticity is not guaranteed and the protection channels for investors are not sound. Through this study, This article have a deeper understanding of the long-term issues, and use the relevant data as a theory of science, and put forward some constructive suggestions.
Study of Green GDP Based on the Ecological Footprint Model
Authors: Wang Wei , Song Jiayue , Dai Yunjie
Published: August 2024

To explicitly assess the impact of the implementation of GGDP policies on global climate, this paper analyzes multiple manifestations of climate change. Using analytic hierarchy process, the significance of each manifestation was assessed, with carbon dioxide being the most significant. In this paper, "carbon emissions" is used as a research index, and the relation function y=68.56 + 0.002* investment in environmental governance + 0.004* investment in environmental degradation was obtained by fitting the carbon emission variation and the sum of investment in environmental pollution control and environmental degradation with least square method.  In addition, this paper introduces the "ecological footprint model", which uses the ecological footprint demand and ecological carrying capacity to jointly calculate the ecological damage level index of a country or region, to evaluate the sustainable development level and assist the carbon emission model to objectively evaluate the impact of the implementation of GGDP policies on the global climate. The advantages and disadvantages of the implementation of GGDP policy are also analyzed, the EKC curve is introduced, and suggestions for improvement are put forward for the possible fairness problems.
Evaluating the Role of Environmental Policy in Driving Green Innovation in the Corporate Sector
Authors: Yang Xiaoyu , Li Yanrui , Xu Haihui
Published: August 2024

Based on the implementation of the NEPL in 2015, this paper uses the DID model to explore the impact of the policy on the GTI of enterprises. The study finds that the NEPL has significantly promoted the GTI of heavy polluting enterprises, and this promotion effect is sustainable. Further analysis shows that enterprise R&D investment plays a significant intermediary role, which can improve the level of GTI of heavy polluting enterprises. In addition, the results of heterogeneity analysis show that the NEPL has a more significant promotion effect on non-state-owned enterprises. These research conclusions provide some enlightenment and suggestions for improving the research on the impact of the NEPL on the GTI of enterprises.
The Application of Electroflocculation (EC) Technology in Printing and Dyeing Wastewater
Authors: Wang Chuanyu
Published: August 2024

Industrial wastewater contains a large number of toxic pollutants, and the total consumption of dyes in the global textile printing and dyeing industry exceeds 587,000 tons per year. Duo to the process of dye production is more complex, the application of processes and materials are more, so many production links will produce a variety of waste, garbage, and the relevant waste dye into the river, lake and sea is up to millions of kilograms. It can be seen that textile printing and dyeing wastewater is the main source of water environmental pollution. If not treated in time, it will not only affect the production efficiency, but also harm the surrounding ecological environment and pose a serious threat to human survival. Scientific and effective intervention of textile industry wastewater and reasonable selection of textile industry wastewater intervention mode are related to the sustainable development of the industry. In recent years, electroflocculation (EC) technology has gradually become a research hotspot due to its advantages of high removal rate, simple operation, small dosage of chemicals, and small impact on the environment, including the intervention of wastewater. This paper will describe the main mechanism of EC and the application status of EC technology is discussed in detail, the limitations and future development trend of this technology are also proposed.
Investigating Selection Factors for Primary Education in India through Algorithmic Analysis
Authors: Xu Ye
Published: August 2024

The Indian primary education system has undergone significant reforms, including the introduction of the National Education Policy (NEP) in 2020, aimed at enhancing inclusivity and quality in education. This paper explores the importance of school selection and allocation mechanisms in ensuring equitable access to education. It begins by providing a background on the Indian education system, tracing its historical roots and recent transformations under the NEP. The research problem centers on the need to design efficient allocation mechanisms that address existing disparities and promote inclusivity. The objectives of the study include defining allocation mechanisms, evaluating their efficiency criteria, examining the role of government policies, and identifying challenges and opportunities in the current system. The methodology involves analyzing theoretical models for efficient allocation, proposing a framework for India's primary school selection, integrating agents' preferences into the allocation model, and conducting simulations and predictive analyses. Key findings underscore the importance of transparent, accountable, and inclusive allocation processes, guided by principles of fairness and social equity. Policy recommendations include aligning school selection policies with regional languages, promoting age-appropriate learning techniques, and prioritizing digital integration and innovation.
Application Analysis of Equity Incentive in China's Environmental Governance Enterprises——Taking Beijing AvIC Teda As an Example
Authors: Hao Fang
Published: August 2024

With the continuous advancement of the "14th five year plan", environmental governance enterprises have developed more and more rapidly, a large number of high-tech state-owned enterprises have poured into them, and gradually established the leading position in the industry. For this type of enterprises, how to effectively attract and retain core technical talents is very important. At the same time, the central guidance on deepening the reform of state-owned enterprises also puts forward new requirements to accelerate the stimulation of internal vitality. Therefore, equity incentive, which is conducive to mobilizing the enthusiasm of core talents, began to be concerned by many enterprises. Based on the brief introduction of equity incentive theory and taking Avic Teda in Beijing as an example, according to this company's financial data from 2019 to 2021, this paper analyzes the impact of the equity incentive scheme on enterprise performance of solvency and profitability, and puts forward some suggestions on how to make good use of the equity incentive tool, in order to improve the role of equity incentive in the development of this type of company
Research on the Technology and Method of Combining Virtual Reality with Eye Movement Tracking - Taking VR Vision Corrector as an Example
Authors: Huang Ziyun , Li Zengming
Published: August 2024

In response to the low efficiency and error prone human statistical recording in traditional vision testing and correction services, as well as the need for regular vision testing under the normalization of vision testing, which also brings more complex workload for testing personnel and higher professional technical requirements for correcting vision, this article takes VR vision correction equipment as an example to explore the significance and value of virtual reality combined with eye tracking technology in vision correction services. The article first introduces the basic concepts and characteristics of virtual reality, as well as the application of convolutional neural networks in eye tracking technology, and then constructs a research technical framework for VR vision correctors that combine virtual reality with eye tracking. Research has shown that virtual reality and eye tracking technology have great potential for application in the field of vision correction, and can effectively provide certain reference value for research and development in related fields.
Comparison of Cross-sectional Momentum Strategy and Time-Series Momentum Strategy
Authors: Chen Wei
Published: August 2024

There are all kinds of quantitative portfolios used in the stock investing such as momentum, mean reversion, liquidity and so on. Cross-sectional momentum and Time-series momentum are the two main method of momentum strategies. They are also the basic methods that were used to construct the portfolio of investing. The essay analyses the difference of the theoretical definition and compares the two methods’ return, sharp ratio, maximum drawdown and some other indicators in a relative stable and prosperous environment which is simulated by well performed stocks in the 10 years’ period without considering the transaction cost. The result finds that the time-series momentum and cross-sectional momentum both generate positive return in the environment that is simulated. Moreover, the time-series momentum even performs better than cross-sectional momentum strategies in the stable and prosperous environment. The essay also points out the limitation of the experiment and presents some useful advice for the investors who want to invest in the stock market.