Pub Date : 2024-05-07DOI: 10.54254/2755-2721/59/20240793
Haotian Yu
As the evolution of FinFET technology continues, traditional gate insulator materials, such as SiO2, face challenges in meeting the demands of modern applications, especially when it comes to gate leakage current control. Emerging as promising contenders to replace SiO2, materials with higher dielectric constants, notably HfO2 and Si3N4, are drawing significant attention in the semiconductor community. Leveraging the advanced capabilities of tools like Silvaco TCAD, an in-depth analysis was conducted to compare the performance and gate leakage current control abilities of SiO2, HfO2, and Si3N4, utilizing the Quantum examples 3D FinFET model. The findings not only highlight the potential of HfO2 and Si3N4 as worthy replacements for SiO2 but also accentuate the distinct advantages of SiO2, making it particularly well-suited as a substitute. This exploration goes beyond a mere comparison of materials. It dives deep into understanding their behaviors under various operational conditions, laying a foundation for potential breakthroughs and fostering the next wave of innovations in semiconductor technology.
{"title":"Investigating the inhibition of short channel effects using different materials of gate insulator layers in FinFET","authors":"Haotian Yu","doi":"10.54254/2755-2721/59/20240793","DOIUrl":"https://doi.org/10.54254/2755-2721/59/20240793","url":null,"abstract":"As the evolution of FinFET technology continues, traditional gate insulator materials, such as SiO2, face challenges in meeting the demands of modern applications, especially when it comes to gate leakage current control. Emerging as promising contenders to replace SiO2, materials with higher dielectric constants, notably HfO2 and Si3N4, are drawing significant attention in the semiconductor community. Leveraging the advanced capabilities of tools like Silvaco TCAD, an in-depth analysis was conducted to compare the performance and gate leakage current control abilities of SiO2, HfO2, and Si3N4, utilizing the Quantum examples 3D FinFET model. The findings not only highlight the potential of HfO2 and Si3N4 as worthy replacements for SiO2 but also accentuate the distinct advantages of SiO2, making it particularly well-suited as a substitute. This exploration goes beyond a mere comparison of materials. It dives deep into understanding their behaviors under various operational conditions, laying a foundation for potential breakthroughs and fostering the next wave of innovations in semiconductor technology.","PeriodicalId":350976,"journal":{"name":"Applied and Computational Engineering","volume":"24 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141004856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-07DOI: 10.54254/2755-2721/60/20240849
Jiayi Wang
Diabetes is a growing disease, with patient morbidity and mortality increasing every year. Since diabetes is associated with short- and long-term health problems, it has become extremely important to detect and effectively treat diabetes. Many research institutes and healthcare organizations are leaning towards the use of cost-effective biosensors to monitor the body's blood glucose standards and provide accurate health diagnosis. Biosensors help in accurate diabetes diagnosis and monitoring for effective treatment and management. Based on the recent advances in nanotechnology, a variety of glucose biosensors made of carbon nanomaterials have been developed, and such sensors are a key factor for diabetes diagnosis and treatment, with better performance and sensitivity for better detection of the disease and tracking of the response to treatment. Thus, this research illustrates the significant advances in nanotechnology-based biosensors for medical applications and the potential of carbon nanomaterials for good applications in medical testing.
{"title":"Sensors constructed from carbon nanomaterials and their applications","authors":"Jiayi Wang","doi":"10.54254/2755-2721/60/20240849","DOIUrl":"https://doi.org/10.54254/2755-2721/60/20240849","url":null,"abstract":"Diabetes is a growing disease, with patient morbidity and mortality increasing every year. Since diabetes is associated with short- and long-term health problems, it has become extremely important to detect and effectively treat diabetes. Many research institutes and healthcare organizations are leaning towards the use of cost-effective biosensors to monitor the body's blood glucose standards and provide accurate health diagnosis. Biosensors help in accurate diabetes diagnosis and monitoring for effective treatment and management. Based on the recent advances in nanotechnology, a variety of glucose biosensors made of carbon nanomaterials have been developed, and such sensors are a key factor for diabetes diagnosis and treatment, with better performance and sensitivity for better detection of the disease and tracking of the response to treatment. Thus, this research illustrates the significant advances in nanotechnology-based biosensors for medical applications and the potential of carbon nanomaterials for good applications in medical testing.","PeriodicalId":350976,"journal":{"name":"Applied and Computational Engineering","volume":"23 32","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141004797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-07DOI: 10.54254/2755-2721/60/20240860
Jiatong Wang
A flexible sensor is a sensor made of flexible materials, generally composed of three layers: base layer, sensing layer, and packaging layer, can be widely used in medical electronics, biological monitoring, wearable electronics and other fields. Compared with traditional electronic devices, flexible electronics have cheap substrates and can be attached to curved surfaces to achieve sensing functions, which attract researchers in different fields. In recent years, the development of nanotechnology and polymer materials has greatly promoted the innovation of flexible electronics. This paper focuses on the application of nanotechnology in flexible sensing. Through horizontal induction and analysis of nanotechnologies in polymer -based sensors, hydrogel sensors, self-powered sensors and other sensors, suggestions for continuous detection and clinical treatment of sensors are put forward vertically. Achieving the structure and intrinsic flexibility of the flexible sensor substrate, deposition of the micro-circuit onto the substrate, encapsulation without breaking the ductility condition, maximizing its conductive, thermal and mechanical response, self-powered, degradability and other properties that meet human needs are all the focus of the flexible electronics discussion. In this paper, the structure, response and drug delivery of the flexible sensor will be analyzed and discussed from the Angle of material.
{"title":"Research of flexible sensor based on nanomaterial","authors":"Jiatong Wang","doi":"10.54254/2755-2721/60/20240860","DOIUrl":"https://doi.org/10.54254/2755-2721/60/20240860","url":null,"abstract":"A flexible sensor is a sensor made of flexible materials, generally composed of three layers: base layer, sensing layer, and packaging layer, can be widely used in medical electronics, biological monitoring, wearable electronics and other fields. Compared with traditional electronic devices, flexible electronics have cheap substrates and can be attached to curved surfaces to achieve sensing functions, which attract researchers in different fields. In recent years, the development of nanotechnology and polymer materials has greatly promoted the innovation of flexible electronics. This paper focuses on the application of nanotechnology in flexible sensing. Through horizontal induction and analysis of nanotechnologies in polymer -based sensors, hydrogel sensors, self-powered sensors and other sensors, suggestions for continuous detection and clinical treatment of sensors are put forward vertically. Achieving the structure and intrinsic flexibility of the flexible sensor substrate, deposition of the micro-circuit onto the substrate, encapsulation without breaking the ductility condition, maximizing its conductive, thermal and mechanical response, self-powered, degradability and other properties that meet human needs are all the focus of the flexible electronics discussion. In this paper, the structure, response and drug delivery of the flexible sensor will be analyzed and discussed from the Angle of material.","PeriodicalId":350976,"journal":{"name":"Applied and Computational Engineering","volume":"79 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141003983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-07DOI: 10.54254/2755-2721/60/20240862
Xiaohan Xia
Traditional fossil energy is being replaced by low-carbon clean energy, and lithium batteries have obtained extensive attention and are widely used for their high energy density and power density. Graphite is the most commonly used anode material for its excellent electrochemical performance. Since the theoretical lithium storage capacity of graphite is only 372 mAh/g, the lithium battery with graphite anode has problems such as poor electrolyte compatibility and a high volume expansion rate. Many researchers have devoted themselves to the modification of graphite anode to improve the comprehensive performance of graphite anode materials. This paper focuses on three main modification methods of graphite anodes. The application research progress of graphite modification on the improvement of lithium batteries performance was summarized from the aspects of spheroidization treatment, surface coating, and element doping. Spheroidization treatment and surface coating can effectively improve the electrochemical properties of the material interface, but it is difficult to increase the energy density of the material interface. Doping modification can improve energy density, but it cannot be uniform and stable. The modification and improvement technology of graphite anode still needs to be developed.
{"title":"Modification of graphite anode for lithium ion battery","authors":"Xiaohan Xia","doi":"10.54254/2755-2721/60/20240862","DOIUrl":"https://doi.org/10.54254/2755-2721/60/20240862","url":null,"abstract":"Traditional fossil energy is being replaced by low-carbon clean energy, and lithium batteries have obtained extensive attention and are widely used for their high energy density and power density. Graphite is the most commonly used anode material for its excellent electrochemical performance. Since the theoretical lithium storage capacity of graphite is only 372 mAh/g, the lithium battery with graphite anode has problems such as poor electrolyte compatibility and a high volume expansion rate. Many researchers have devoted themselves to the modification of graphite anode to improve the comprehensive performance of graphite anode materials. This paper focuses on three main modification methods of graphite anodes. The application research progress of graphite modification on the improvement of lithium batteries performance was summarized from the aspects of spheroidization treatment, surface coating, and element doping. Spheroidization treatment and surface coating can effectively improve the electrochemical properties of the material interface, but it is difficult to increase the energy density of the material interface. Doping modification can improve energy density, but it cannot be uniform and stable. The modification and improvement technology of graphite anode still needs to be developed.","PeriodicalId":350976,"journal":{"name":"Applied and Computational Engineering","volume":"57 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141003402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-07DOI: 10.54254/2755-2721/59/20240772
Yichun Wang
The evolution of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) remains unpredictable, and there is an urgent need for new and effective vaccines to mitigate the pandemic at a time when traditional vaccines may not be sufficient to deal with SARS-CoV-2 variants everywhere. The dendritic cell (DC) vaccine, a novel cancer immunotherapy, has achieved good results in clinical trials alone or combination with other interventions. Due to its strong immune activation ability and the relevant targets found by existing studies, it is expected to become a new immunotherapy against SARS-CoV-2 infection. This article discusses the mechanism of dendritic cells in the immune system and its strategies in cancer treatment, as well as analyzes the role of dendritic cell vaccines in coping with SARS-CoV-2 infection, and compares the advantages and disadvantages of existing vaccine types, in order to explore the possibility of dendritic cell vaccines as an effective strategy against the SARS-CoV-2 pandemic.
{"title":"Dendritic cell vaccines: A potentially effective strategy for the SARS-CoV-2 pandemic","authors":"Yichun Wang","doi":"10.54254/2755-2721/59/20240772","DOIUrl":"https://doi.org/10.54254/2755-2721/59/20240772","url":null,"abstract":"The evolution of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) remains unpredictable, and there is an urgent need for new and effective vaccines to mitigate the pandemic at a time when traditional vaccines may not be sufficient to deal with SARS-CoV-2 variants everywhere. The dendritic cell (DC) vaccine, a novel cancer immunotherapy, has achieved good results in clinical trials alone or combination with other interventions. Due to its strong immune activation ability and the relevant targets found by existing studies, it is expected to become a new immunotherapy against SARS-CoV-2 infection. This article discusses the mechanism of dendritic cells in the immune system and its strategies in cancer treatment, as well as analyzes the role of dendritic cell vaccines in coping with SARS-CoV-2 infection, and compares the advantages and disadvantages of existing vaccine types, in order to explore the possibility of dendritic cell vaccines as an effective strategy against the SARS-CoV-2 pandemic.","PeriodicalId":350976,"journal":{"name":"Applied and Computational Engineering","volume":"81 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141002769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-07DOI: 10.54254/2755-2721/60/20240902
Yifei Kong
With the development of society and economy, Chinas urbanization process has accelerated, affecting the way of land use in China. Traditional methods of analyzing urbanization characteristics and their influencing factors make it difficult to visualize the changes in land-use patterns during the urbanization process. Satellite remote sensing has a greater advantage in identifying concrete coverage and built-up areas. In this study, the visualization and analysis of remote sensing images are used to monitor the trend of urban expansion and changes in land-use patterns in Shenzhen during the period of 1987-2023. At the same time, this paper provides an in-depth analysis of the spatial and temporal characteristics of urbanization in Shenzhen and explores the role of policy as a major factor in promoting the process. It is found that the proportion of built-up land in Shenzhen increased significantly between 1987 and 2023, and most of the built-up land was transformed into vegetated areas and waters. During the study period, urbanization in Shenzhen was characterized by high-speed expansion in the early period and slow growth in the later period. Upon analysis, the promotion of Chinas reform and opening-up policy is the main factor that makes Shenzhens urbanization show the above characteristics. The research in this paper helps show the importance of policies in Chinas urbanization process, which can provide experience for Chinas urbanization to transfer from the high-speed mode to the high-quality mode.
{"title":"Study on the spatio-temporal characteristics and influencing factors of urbanization process based on satellite remote sensing data: A case study of Shenzhen","authors":"Yifei Kong","doi":"10.54254/2755-2721/60/20240902","DOIUrl":"https://doi.org/10.54254/2755-2721/60/20240902","url":null,"abstract":"With the development of society and economy, Chinas urbanization process has accelerated, affecting the way of land use in China. Traditional methods of analyzing urbanization characteristics and their influencing factors make it difficult to visualize the changes in land-use patterns during the urbanization process. Satellite remote sensing has a greater advantage in identifying concrete coverage and built-up areas. In this study, the visualization and analysis of remote sensing images are used to monitor the trend of urban expansion and changes in land-use patterns in Shenzhen during the period of 1987-2023. At the same time, this paper provides an in-depth analysis of the spatial and temporal characteristics of urbanization in Shenzhen and explores the role of policy as a major factor in promoting the process. It is found that the proportion of built-up land in Shenzhen increased significantly between 1987 and 2023, and most of the built-up land was transformed into vegetated areas and waters. During the study period, urbanization in Shenzhen was characterized by high-speed expansion in the early period and slow growth in the later period. Upon analysis, the promotion of Chinas reform and opening-up policy is the main factor that makes Shenzhens urbanization show the above characteristics. The research in this paper helps show the importance of policies in Chinas urbanization process, which can provide experience for Chinas urbanization to transfer from the high-speed mode to the high-quality mode.","PeriodicalId":350976,"journal":{"name":"Applied and Computational Engineering","volume":"1 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141004505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-07DOI: 10.54254/2755-2721/59/20240786
Baiwei Sun
Electric vehicles (EVs) are becoming more popular as a substitute for gas-guzzling automobiles because of weather changes, population increase, and limited resources. Since lithium-ion batteries (LIBs) have several benefits including high energy density, high specific energy, zero memory effect, low self-discharge, and long lifespan, LIBs are widely employed in EVs. However, LIBs still have room for improvement, such as charging speed. The performance of electrodes in LIBs can be enhanced using nanotechnology, which involves nanocoating, nanostructure, and nanodoping. Nano techniques offer the benefits of large surface area, robustness, and high resistance. This article will introduce the pros and cons of some common active materials of the cathode (nickel-manganese-cobalt oxide, lithium nickel-cobalt-aluminum oxide, lithium manganese oxide and lithium-iron phosphate) and anode (graphite and SiO2), and discuss which nanotechnology is suitable for enhancement in the context of the cons for each active material. This research summarizes a few instances of electrode-active materials that actively employ nanotechnology.
{"title":"Application of nanotechnology in the battery of electric vehicles","authors":"Baiwei Sun","doi":"10.54254/2755-2721/59/20240786","DOIUrl":"https://doi.org/10.54254/2755-2721/59/20240786","url":null,"abstract":"Electric vehicles (EVs) are becoming more popular as a substitute for gas-guzzling automobiles because of weather changes, population increase, and limited resources. Since lithium-ion batteries (LIBs) have several benefits including high energy density, high specific energy, zero memory effect, low self-discharge, and long lifespan, LIBs are widely employed in EVs. However, LIBs still have room for improvement, such as charging speed. The performance of electrodes in LIBs can be enhanced using nanotechnology, which involves nanocoating, nanostructure, and nanodoping. Nano techniques offer the benefits of large surface area, robustness, and high resistance. This article will introduce the pros and cons of some common active materials of the cathode (nickel-manganese-cobalt oxide, lithium nickel-cobalt-aluminum oxide, lithium manganese oxide and lithium-iron phosphate) and anode (graphite and SiO2), and discuss which nanotechnology is suitable for enhancement in the context of the cons for each active material. This research summarizes a few instances of electrode-active materials that actively employ nanotechnology.","PeriodicalId":350976,"journal":{"name":"Applied and Computational Engineering","volume":"23 15","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141004826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-07DOI: 10.54254/2755-2721/59/20240763
Zhaohua He
Electrification applications in transport and energy supply can significantly reduce carbon emissions. The impact of electrification on carbon emissions reduction varies across countries with different development profiles. In developed countries, with the increase of renewable resources usage in electricity production, the per capita CO2 emissions decrease. For example, Germany increased its share of electricity production from renewable sources from 6.2% to 44%, and its per capita CO2 emissions dropped from 11.2 t to 8.1t. While in developing countries, the per capita CO2 emissions are still increasing with the increase of electrification level. For example, India increased its degree of electrification from 58% to 99%, and its per capita CO2 emissions increased from 0.9 t to 1.9 t. This paper first used LCA data to compare the Greenhouse gas (GHG) emissions of electric vehicles and fuel vehicles and GHG emissions of electricity plants from different energy sources. Then, this paper used Linear regression to determine how close between electrification and climate change. This research aims to identify the potential of electrification to achieve urbanization and carbon neutrality, as there are few discussions regarding the combination of these three topics at present. This research can confirm the benefit of electrification in reducing carbon emissions, which can promote the broad application of electrification and its development.
{"title":"Evaluate the potential of electrification to achieve urbanization and carbon neutrality","authors":"Zhaohua He","doi":"10.54254/2755-2721/59/20240763","DOIUrl":"https://doi.org/10.54254/2755-2721/59/20240763","url":null,"abstract":"Electrification applications in transport and energy supply can significantly reduce carbon emissions. The impact of electrification on carbon emissions reduction varies across countries with different development profiles. In developed countries, with the increase of renewable resources usage in electricity production, the per capita CO2 emissions decrease. For example, Germany increased its share of electricity production from renewable sources from 6.2% to 44%, and its per capita CO2 emissions dropped from 11.2 t to 8.1t. While in developing countries, the per capita CO2 emissions are still increasing with the increase of electrification level. For example, India increased its degree of electrification from 58% to 99%, and its per capita CO2 emissions increased from 0.9 t to 1.9 t. This paper first used LCA data to compare the Greenhouse gas (GHG) emissions of electric vehicles and fuel vehicles and GHG emissions of electricity plants from different energy sources. Then, this paper used Linear regression to determine how close between electrification and climate change. This research aims to identify the potential of electrification to achieve urbanization and carbon neutrality, as there are few discussions regarding the combination of these three topics at present. This research can confirm the benefit of electrification in reducing carbon emissions, which can promote the broad application of electrification and its development.","PeriodicalId":350976,"journal":{"name":"Applied and Computational Engineering","volume":"6 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141005277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-07DOI: 10.54254/2755-2721/59/20240757
Yongchen Zhao
Light pollution refers to the inappropriate and excessive use of artificial light. The increasing extent and intensity of artificial light has impacted the biology and ecology of species significantly. Admittedly, the widespread use of light benefits people to a large extent and is positively associated with modernization, security, and wealth. But its catastrophic effects can never be ignored. To be specific, light pollution can arouse negative health impacts such as headaches, dizziness, increased anxiety, pressure, and fatigue. The paper wants to find applicable indicators regarding the risk levels of light pollution and establish criteria to judge the risk of light pollution in different areas. In the process, the research first measures the interconnection between the indicators, which are chosen to reflect the risk of light pollution, and then uses PCA to implement dimensionality reduction so as to simplify the model. After that, EWM and TOPSIS are applied to determine the weight of each indicator and the rating of the cities. Institutions or governments that are responsible for managing light pollution can then use the model to judge the risk level of different cities. The model can help to avoid overlooking or overemphasizing a city's light pollution risk level, providing a more accurate estimation. In this case, institutions and the government can take better and more effective measures to restrict light pollution.
{"title":"Research on the comprehensive evaluation of light pollution","authors":"Yongchen Zhao","doi":"10.54254/2755-2721/59/20240757","DOIUrl":"https://doi.org/10.54254/2755-2721/59/20240757","url":null,"abstract":"Light pollution refers to the inappropriate and excessive use of artificial light. The increasing extent and intensity of artificial light has impacted the biology and ecology of species significantly. Admittedly, the widespread use of light benefits people to a large extent and is positively associated with modernization, security, and wealth. But its catastrophic effects can never be ignored. To be specific, light pollution can arouse negative health impacts such as headaches, dizziness, increased anxiety, pressure, and fatigue. The paper wants to find applicable indicators regarding the risk levels of light pollution and establish criteria to judge the risk of light pollution in different areas. In the process, the research first measures the interconnection between the indicators, which are chosen to reflect the risk of light pollution, and then uses PCA to implement dimensionality reduction so as to simplify the model. After that, EWM and TOPSIS are applied to determine the weight of each indicator and the rating of the cities. Institutions or governments that are responsible for managing light pollution can then use the model to judge the risk level of different cities. The model can help to avoid overlooking or overemphasizing a city's light pollution risk level, providing a more accurate estimation. In this case, institutions and the government can take better and more effective measures to restrict light pollution.","PeriodicalId":350976,"journal":{"name":"Applied and Computational Engineering","volume":"138 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141002650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-07DOI: 10.54254/2755-2721/59/20240777
Yang Yihui, Zhang Lin
Vegetation serves as a crucial indicator of ecological environment in different regions. Land cover vegetation is significantly impacted by climatic factors and human activities, and good coverage can enhance the quality of the local ecological environment. The Lijiang River Basin is a typical karst landscape with a delicate ecological environment. Describing changes in the characteristics of vegetation cover under different influencing factors carries significant significance for the restoration of vegetation in karst areas, taking the Li River Basin as an example. This study is based on the vegetation NDVI dataset MOD13Q1 of the Li River Basin from 2000 to 2020. Results showed that: over the past 21 years, the Normalized Difference Vegetation Index (NDVI) mean value in the Li River Basin was around 0.85. The Li River Basins inter-annual growth rate was 0.011/10yr; nevertheless, there are substantial discrepancies among regions. Vegetation was notably more impacted by temperature than precipitation in terms of land cover. NDVI exhibited a decline trend from the central area to the peripheral areas. Additionally, there was a lack of vegetation cover on the upper, western side of the middle reaches, and eastern side of downstream.
{"title":"Spatial-temporal variation of NDVI and its climatic response in Li River Basin based on GEE","authors":"Yang Yihui, Zhang Lin","doi":"10.54254/2755-2721/59/20240777","DOIUrl":"https://doi.org/10.54254/2755-2721/59/20240777","url":null,"abstract":"Vegetation serves as a crucial indicator of ecological environment in different regions. Land cover vegetation is significantly impacted by climatic factors and human activities, and good coverage can enhance the quality of the local ecological environment. The Lijiang River Basin is a typical karst landscape with a delicate ecological environment. Describing changes in the characteristics of vegetation cover under different influencing factors carries significant significance for the restoration of vegetation in karst areas, taking the Li River Basin as an example. This study is based on the vegetation NDVI dataset MOD13Q1 of the Li River Basin from 2000 to 2020. Results showed that: over the past 21 years, the Normalized Difference Vegetation Index (NDVI) mean value in the Li River Basin was around 0.85. The Li River Basins inter-annual growth rate was 0.011/10yr; nevertheless, there are substantial discrepancies among regions. Vegetation was notably more impacted by temperature than precipitation in terms of land cover. NDVI exhibited a decline trend from the central area to the peripheral areas. Additionally, there was a lack of vegetation cover on the upper, western side of the middle reaches, and eastern side of downstream.","PeriodicalId":350976,"journal":{"name":"Applied and Computational Engineering","volume":"98 s393","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141002871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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