Multimodal spatiotemporal data from smart city consumer electronics present critical challenges including cross-modal temporal misalignment,unreliable data quality,limited joint modeling of spatial and temporal depend...Multimodal spatiotemporal data from smart city consumer electronics present critical challenges including cross-modal temporal misalignment,unreliable data quality,limited joint modeling of spatial and temporal dependencies,and weak resilience to adversarial updates.To address these limitations,EdgeST-Fusion is introduced as a cross-modal federated graph transformer framework for context-aware smart city analytics.The architecture integrates cross-modal embedding networks for modality alignment,graph transformer encoders for spatial dependency modeling,temporal self-attention for dynamic pattern learning,and adaptive anomaly detection to ensure data quality and security during aggregation.A privacy-preserving federated learning protocol with differential privacy guarantees enables collaborative model training without centralizing sensitive data.The framework employs data-quality-aware weighted aggregation to enhance robustness against noisy and malicious client updates.Experimental evaluation on the GeoLife,PeMS-Bay,and SmartHome+datasets demonstrates that EdgeST-Fusion achieves 21.8%improvement in prediction accuracy,35.7%reduction in communication overhead,and 29.4%enhancement in security resilience compared to recent baselines.Real-world deployment across three smart city testbeds validates practical viability with 90.0%average accuracy and sub-250 ms inference latency.The proposed framework remains feasible for deployment on heterogeneous and resource-constrained consumer electronics devices whilemaintaining strong privacy guarantees and scalability for large-scale urban environments.展开更多
Magnesium is at a crossroads,facing significant opportuni-ties and challenges.On one hand,its unique properties-such as low density,high strength-to-weight ratio,and excellent castability-position it as a key material...Magnesium is at a crossroads,facing significant opportuni-ties and challenges.On one hand,its unique properties-such as low density,high strength-to-weight ratio,and excellent castability-position it as a key material for lightweighting in automotive[1,2],aerospace[3,4],and consumer electronics[4,5].On the other hand,challenges such as limited corro-sion resistance,poor formability at room temperature,and a reliance on energy-intensive extraction processes impede its widespread adoption.Despite the steady increase of magne-sium research and production in the last three decades,its growth in recent years has stalled in almost all regions of the world.展开更多
1.Introduction.The ever-increasing demands for high-energy-density power supply systems have driven the rapid development of conventional lithium-ion batteries,of which properties are approaching to the ceiling.In the...1.Introduction.The ever-increasing demands for high-energy-density power supply systems have driven the rapid development of conventional lithium-ion batteries,of which properties are approaching to the ceiling.In the meantime,the safety of lithium-ion batteries also grabs more attention as their wide application in consumer electronics and electric vehicles.The safety of battery system can be enhanced inherently by replacing the flammable liquid electrolytes with inorganic solid electrolytes,which makes solid-state battery one of the most promising candidates of next-generation energy storage systems[1-3].Additionally,the improvements in energy density are foreseen as solid electrolytes enable lithium metal anode[4-11]and high-voltage cathodes[12-15].展开更多
Consumer electronics firms like Apple and Xiaomi adopt a“main product+complementary product”business operation mode(e.g.,Apple Pencil for iPad).Interestingly,upgrades in main products and complementary products ofte...Consumer electronics firms like Apple and Xiaomi adopt a“main product+complementary product”business operation mode(e.g.,Apple Pencil for iPad).Interestingly,upgrades in main products and complementary products often unsynchronized,while cooperating with a specialized third-party firm seems to facilitate complementary product’s upgrade.Generally,the focal firm faces a long-term cooperation decision(i.e.,whether to partner with a third-party firm for complementary product),and a relatively short-term upgrade decision(i.e.,whether to upgrade complementary product simultaneously with main product).We construct a two-stage theoretical model to investigate the optimal upgrade and cooperation strategies for complementary product and the interaction mechanism,considering the value-added degree and the third-party firm’s cost advantage.Our findings indicate that upgrading complementary products hurts focal firm when the value-added degree of complementary product is high.Due to excessive bargaining power,the partnership prevents the upgrades unless when the value-added degree is high.Additionally,we find that a delicate balance,depending on the value-added degree,between cost-reduction effect and erosion effect in determining optimal cooperation strategy.Moreover,we demonstrate that firm’s profit and environmental sustainability can achieve a win-win outcome.We also find that the ability to determine value-added degree may instead prevent the upgrade and cooperation.展开更多
Previously,factory floors were usually'-limits to outsiders.Now,they're beming some of Chinamost soughtafter tourist destinations.Nowhere is this more evident than at consumer electronics and smart manufacturi...Previously,factory floors were usually'-limits to outsiders.Now,they're beming some of Chinamost soughtafter tourist destinations.Nowhere is this more evident than at consumer electronics and smart manufacturing company Xiaomi’s automobile factory in Beijing,where getting a spot on a tour is not much easier than scoring front-row concert tickets.展开更多
Much more than comparative advantage and free markets have been at play in shaping China＇s export success. Government policies have helped nurture domestic capabilities in consumer electronics and other advanced area...Much more than comparative advantage and free markets have been at play in shaping China＇s export success. Government policies have helped nurture domestic capabilities in consumer electronics and other advanced areas that would most likely not have developed in their absence. As a result, China has ended up with an export basket that is significantly more sophisticated than what would be normally expected for a country at its income level. This has been an important determinant of China ＇s rapid growth. What matters for China＇s future growth is not the volume of exports, but whether China will continue to latch on to higher-income products over time.展开更多
The rapid growth of consumer electronics,Internet of Things,electric vehicles,and grid-scale storage has led to an urgent need for rechargeable batteries that can provide both high energy density and fast charging cap...The rapid growth of consumer electronics,Internet of Things,electric vehicles,and grid-scale storage has led to an urgent need for rechargeable batteries that can provide both high energy density and fast charging capability[1].Among the promising candidates,anode-free lithium metal batteries have attracted increasing attention.They employ only a conductive substrate,such as copper(Cu)foil,without any anode active material.This design,which pairs a fully lithiated cathode with a bare current collector to eliminate excess lithium,offers significant advantages in reducing material cost,simplifying manufacturing,and improving energy density[2].展开更多
基金supported by the University of Tabuk,Saudi Arabia。
文摘Multimodal spatiotemporal data from smart city consumer electronics present critical challenges including cross-modal temporal misalignment,unreliable data quality,limited joint modeling of spatial and temporal dependencies,and weak resilience to adversarial updates.To address these limitations,EdgeST-Fusion is introduced as a cross-modal federated graph transformer framework for context-aware smart city analytics.The architecture integrates cross-modal embedding networks for modality alignment,graph transformer encoders for spatial dependency modeling,temporal self-attention for dynamic pattern learning,and adaptive anomaly detection to ensure data quality and security during aggregation.A privacy-preserving federated learning protocol with differential privacy guarantees enables collaborative model training without centralizing sensitive data.The framework employs data-quality-aware weighted aggregation to enhance robustness against noisy and malicious client updates.Experimental evaluation on the GeoLife,PeMS-Bay,and SmartHome+datasets demonstrates that EdgeST-Fusion achieves 21.8%improvement in prediction accuracy,35.7%reduction in communication overhead,and 29.4%enhancement in security resilience compared to recent baselines.Real-world deployment across three smart city testbeds validates practical viability with 90.0%average accuracy and sub-250 ms inference latency.The proposed framework remains feasible for deployment on heterogeneous and resource-constrained consumer electronics devices whilemaintaining strong privacy guarantees and scalability for large-scale urban environments.
文摘Magnesium is at a crossroads,facing significant opportuni-ties and challenges.On one hand,its unique properties-such as low density,high strength-to-weight ratio,and excellent castability-position it as a key material for lightweighting in automotive[1,2],aerospace[3,4],and consumer electronics[4,5].On the other hand,challenges such as limited corro-sion resistance,poor formability at room temperature,and a reliance on energy-intensive extraction processes impede its widespread adoption.Despite the steady increase of magne-sium research and production in the last three decades,its growth in recent years has stalled in almost all regions of the world.
文摘1.Introduction.The ever-increasing demands for high-energy-density power supply systems have driven the rapid development of conventional lithium-ion batteries,of which properties are approaching to the ceiling.In the meantime,the safety of lithium-ion batteries also grabs more attention as their wide application in consumer electronics and electric vehicles.The safety of battery system can be enhanced inherently by replacing the flammable liquid electrolytes with inorganic solid electrolytes,which makes solid-state battery one of the most promising candidates of next-generation energy storage systems[1-3].Additionally,the improvements in energy density are foreseen as solid electrolytes enable lithium metal anode[4-11]and high-voltage cathodes[12-15].
基金supported in part by the National Natural Science Foundation of China under Grant Nos.72132007 and 72502076.
文摘Consumer electronics firms like Apple and Xiaomi adopt a“main product+complementary product”business operation mode(e.g.,Apple Pencil for iPad).Interestingly,upgrades in main products and complementary products often unsynchronized,while cooperating with a specialized third-party firm seems to facilitate complementary product’s upgrade.Generally,the focal firm faces a long-term cooperation decision(i.e.,whether to partner with a third-party firm for complementary product),and a relatively short-term upgrade decision(i.e.,whether to upgrade complementary product simultaneously with main product).We construct a two-stage theoretical model to investigate the optimal upgrade and cooperation strategies for complementary product and the interaction mechanism,considering the value-added degree and the third-party firm’s cost advantage.Our findings indicate that upgrading complementary products hurts focal firm when the value-added degree of complementary product is high.Due to excessive bargaining power,the partnership prevents the upgrades unless when the value-added degree is high.Additionally,we find that a delicate balance,depending on the value-added degree,between cost-reduction effect and erosion effect in determining optimal cooperation strategy.Moreover,we demonstrate that firm’s profit and environmental sustainability can achieve a win-win outcome.We also find that the ability to determine value-added degree may instead prevent the upgrade and cooperation.
文摘Previously,factory floors were usually'-limits to outsiders.Now,they're beming some of Chinamost soughtafter tourist destinations.Nowhere is this more evident than at consumer electronics and smart manufacturing company Xiaomi’s automobile factory in Beijing,where getting a spot on a tour is not much easier than scoring front-row concert tickets.
基金This is a paperprepared for the project on "China and the Global Economy 2010" of the China Economic Research andAdvisory Program. I am indebted to Edwin Lim for his guidance and comments, and to the Program forfinancial support
文摘Much more than comparative advantage and free markets have been at play in shaping China＇s export success. Government policies have helped nurture domestic capabilities in consumer electronics and other advanced areas that would most likely not have developed in their absence. As a result, China has ended up with an export basket that is significantly more sophisticated than what would be normally expected for a country at its income level. This has been an important determinant of China ＇s rapid growth. What matters for China＇s future growth is not the volume of exports, but whether China will continue to latch on to higher-income products over time.
文摘The rapid growth of consumer electronics,Internet of Things,electric vehicles,and grid-scale storage has led to an urgent need for rechargeable batteries that can provide both high energy density and fast charging capability[1].Among the promising candidates,anode-free lithium metal batteries have attracted increasing attention.They employ only a conductive substrate,such as copper(Cu)foil,without any anode active material.This design,which pairs a fully lithiated cathode with a bare current collector to eliminate excess lithium,offers significant advantages in reducing material cost,simplifying manufacturing,and improving energy density[2].
