Herein,a sub-micron lanthanum zirconate ceramic(La_(2)Zr_(2)O_(7),LZO)with a pyrochlore structure was prepared by the sol-gel and high temperature sintering methods.The corrosion behavior and mechanism of calcium-ferr...Herein,a sub-micron lanthanum zirconate ceramic(La_(2)Zr_(2)O_(7),LZO)with a pyrochlore structure was prepared by the sol-gel and high temperature sintering methods.The corrosion behavior and mechanism of calcium-ferrum-alumina-silicate(CFAS)powder(33CaO:10FeO_(1.5):13AlO_(1.5):44SiO_(2))on the sub-micron LZO ceramic at 1673 K was investigated.The results indicate that the average grain size of sub-micron LZO ceramic was 895 nm.The CFAS melt rapidly diffused into the interior of the LZO ceramic wafer and reacted with it to generate high melting point rod-shaped Ca_(2)La_(8)(SiO_(4))_(6)O_(2)apatite and m-ZrO_(2)phases,which can effectively hinder further diffusion of CFAS melt,resulting in a slow increase in corrosion depth with corrosion time.After 30 h of CFAS corrosion at 1673 K,the corrosion depth of the LZO ceramic wafer was only 160.3µm,demonstrating its excellent high-temperature resistance to CFAS corrosion.展开更多
This paper presents a novel method of Iossy image compression for digital colorful image sensors with Bayer color filter arrays （CFAs） based on an analysis of existing compression-first methods. An improved compress...This paper presents a novel method of Iossy image compression for digital colorful image sensors with Bayer color filter arrays （CFAs） based on an analysis of existing compression-first methods. An improved compression and decompression structure is described. The captured CFA raw data are firstly lowpass filtered in RGB space by a smooth filter followed by a down-sampling operation. Next, the data are transformed from RGB space to YCbCr space. Lastly, the filtered data in YCbCr space are compressed directly before full color interpolation to avoid redundancy. The presented method can provide a lower compression ratio and has lower complexity than both conventional interpolation-first image compression methods and other similar existing compression-first methods.展开更多
This study investigates the adoption of carbon footprint tracking apps(CFAs)among Thai millennials,a critical element in addressing climate change.CFAs have yet to gain significant traction among users despite offerin...This study investigates the adoption of carbon footprint tracking apps(CFAs)among Thai millennials,a critical element in addressing climate change.CFAs have yet to gain significant traction among users despite offering personalized missions.Employing an extended Technology Acceptance Model(TAM)framework,we examine factors influencing CFA adoption intentions based on a sample of 30 environmentally conscious Thai millennials.Our findings indicate that perceived ease of use and enjoyment are crucial drivers of CFA adoption.Trust significantly impacts perceived usefulness,while enjoyment influences perceived ease of use.The study underscores the importance of user experience(UX)and enjoyment in driving adoption,highlighting the need for intuitive interfaces and engaging features.This research provides comprehensive insights into CFA adoption in Thailand by integrating TAM with external trust and perceived enjoyment factors.These findings offer valuable guidance for app developers,policymakers,and marketers,emphasizing the critical role of user experience and fun in fostering widespread CFA adoption.We discuss implications for stakeholders and suggest directions for future research,including larger-scale studies and cross-cultural comparisons within Southeast Asia.This research contributes to SDG 13(Climate Action)and SDG 12(Responsible Consumption and Production).展开更多
基金Projects(12305304,52473340)supported by the National Natural Science Foundation of ChinaProject(2022Z0560M4001)supported by the Aeronautical Science Foundation of Chinese Aeronautical Establishment+2 种基金Project(2024YCII01141)supported by the Yuelushan Center Industrial Innovation,ChinaProject(2025JJ20042)supported by the Natural Science Foundation of Hunan Province,ChinaProject(2024-2025 Sklpm-ZZ-041)supported by the State Key Laboratory of Powder Metallurgy,China。
文摘Herein,a sub-micron lanthanum zirconate ceramic(La_(2)Zr_(2)O_(7),LZO)with a pyrochlore structure was prepared by the sol-gel and high temperature sintering methods.The corrosion behavior and mechanism of calcium-ferrum-alumina-silicate(CFAS)powder(33CaO:10FeO_(1.5):13AlO_(1.5):44SiO_(2))on the sub-micron LZO ceramic at 1673 K was investigated.The results indicate that the average grain size of sub-micron LZO ceramic was 895 nm.The CFAS melt rapidly diffused into the interior of the LZO ceramic wafer and reacted with it to generate high melting point rod-shaped Ca_(2)La_(8)(SiO_(4))_(6)O_(2)apatite and m-ZrO_(2)phases,which can effectively hinder further diffusion of CFAS melt,resulting in a slow increase in corrosion depth with corrosion time.After 30 h of CFAS corrosion at 1673 K,the corrosion depth of the LZO ceramic wafer was only 160.3µm,demonstrating its excellent high-temperature resistance to CFAS corrosion.
基金the National Natural Science Foundation of China (Nos. 60372021 and 60475018)
文摘This paper presents a novel method of Iossy image compression for digital colorful image sensors with Bayer color filter arrays （CFAs） based on an analysis of existing compression-first methods. An improved compression and decompression structure is described. The captured CFA raw data are firstly lowpass filtered in RGB space by a smooth filter followed by a down-sampling operation. Next, the data are transformed from RGB space to YCbCr space. Lastly, the filtered data in YCbCr space are compressed directly before full color interpolation to avoid redundancy. The presented method can provide a lower compression ratio and has lower complexity than both conventional interpolation-first image compression methods and other similar existing compression-first methods.
文摘This study investigates the adoption of carbon footprint tracking apps(CFAs)among Thai millennials,a critical element in addressing climate change.CFAs have yet to gain significant traction among users despite offering personalized missions.Employing an extended Technology Acceptance Model(TAM)framework,we examine factors influencing CFA adoption intentions based on a sample of 30 environmentally conscious Thai millennials.Our findings indicate that perceived ease of use and enjoyment are crucial drivers of CFA adoption.Trust significantly impacts perceived usefulness,while enjoyment influences perceived ease of use.The study underscores the importance of user experience(UX)and enjoyment in driving adoption,highlighting the need for intuitive interfaces and engaging features.This research provides comprehensive insights into CFA adoption in Thailand by integrating TAM with external trust and perceived enjoyment factors.These findings offer valuable guidance for app developers,policymakers,and marketers,emphasizing the critical role of user experience and fun in fostering widespread CFA adoption.We discuss implications for stakeholders and suggest directions for future research,including larger-scale studies and cross-cultural comparisons within Southeast Asia.This research contributes to SDG 13(Climate Action)and SDG 12(Responsible Consumption and Production).
