Wearable devices become popular because they can help people observe health condition.The battery life is the critical problem for wearable devices. The non-volatile memory(NVM) attracts attention in recent years beca...Wearable devices become popular because they can help people observe health condition.The battery life is the critical problem for wearable devices. The non-volatile memory(NVM) attracts attention in recent years because of its fast reading and writing speed, high density, persistence, and especially low idle power. With its low idle power consumption,NVM can be applied in wearable devices to prolong the battery lifetime such as smart bracelet. However, NVM has higher write power consumption than dynamic random access memory(DRAM). In this paper, we assume to use hybrid random access memory(RAM)and NVM architecture for the smart bracelet system.This paper presents a data management algorithm named bracelet power-aware data management(BPADM) based on the architecture. The BPADM can estimate the power consumption according to the memory access, such as sampling rate of data, and then determine the data should be stored in NVM or DRAM in order to satisfy low power. The experimental results show BPADM can reduce power consumption effectively for bracelet in normal and sleeping modes.展开更多
Tactile displays often face challenges like high power consumption,bulky control systems,and limited portability,hindering their application in wearable technologies.This work presents a novel thermopneumatic tactile ...Tactile displays often face challenges like high power consumption,bulky control systems,and limited portability,hindering their application in wearable technologies.This work presents a novel thermopneumatic tactile display that operates via localized heating of a small air volume,enabling lowvoltage operation with standard batteries.Its fully portable design integrates control electronics into a wearable bracelet with Bluetooth activation,enhancing practicality.Mechanical tests demonstrated the device’s ability to generate forces exceeding 30 mN and displacements of tens of microns using pulsed signals with modulable durations and frequencies.User tests with voluntary participants confirmed its effectiveness as a tactile display,achieving 83%accuracy in recognizing Braille patterns.By addressing key limitations of traditional systems,this approach offers a promising solution for compact,low-power wearable tactile interfaces.展开更多
Halophytes complete their life cycles in saline environments.The recretohalophyte Limonium bicolor has evolved a specialized salt secretory structure,the salt gland,which excretes Na+to avoid salt damage.Typical L.bic...Halophytes complete their life cycles in saline environments.The recretohalophyte Limonium bicolor has evolved a specialized salt secretory structure,the salt gland,which excretes Na+to avoid salt damage.Typical L.bicolor salt glands consist of 16 cells with four fluorescent foci and four secretory pores.Here,we describe a special type of salt gland at the base of the L.bicolor leaf petiole named bracelet salt glands due to their beaded-bracelet-like shape of blue auto-fluorescence.Bracelet salt glands contain more than 16 cells and more than four secretory pores.Leaf disc secretion measurements and non-invasive micro-test techniques indicated that bracelet salt glands secrete more salt than normal salt glands,which helps maintain low Na+levels at the leaf blade to protect the leaf.Cytokinin treatment induced bracelet salt gland differentiation,and the developed ones showed no further differentiation when traced with a living fluorescence microscopy imager,even though new salt gland development and leaf expansion were observed.Transcriptome revealed a NAC transcription factor gene that participates in bracelet salt gland development,as confirmed by its genome editing and overexpression in L.bicolor.These findings shed light on bracelet salt gland development and may facilitate the engineering of salt-tolerant crops.展开更多
基金supported by the Research Fund of National Key Laboratory of Computer Architecture under Grant No.CARCH201501the Open Project Program of the State Key Laboratory of Mathematical Engineering and Advanced Computing under Grant No.2016A09
文摘Wearable devices become popular because they can help people observe health condition.The battery life is the critical problem for wearable devices. The non-volatile memory(NVM) attracts attention in recent years because of its fast reading and writing speed, high density, persistence, and especially low idle power. With its low idle power consumption,NVM can be applied in wearable devices to prolong the battery lifetime such as smart bracelet. However, NVM has higher write power consumption than dynamic random access memory(DRAM). In this paper, we assume to use hybrid random access memory(RAM)and NVM architecture for the smart bracelet system.This paper presents a data management algorithm named bracelet power-aware data management(BPADM) based on the architecture. The BPADM can estimate the power consumption according to the memory access, such as sampling rate of data, and then determine the data should be stored in NVM or DRAM in order to satisfy low power. The experimental results show BPADM can reduce power consumption effectively for bracelet in normal and sleeping modes.
文摘Tactile displays often face challenges like high power consumption,bulky control systems,and limited portability,hindering their application in wearable technologies.This work presents a novel thermopneumatic tactile display that operates via localized heating of a small air volume,enabling lowvoltage operation with standard batteries.Its fully portable design integrates control electronics into a wearable bracelet with Bluetooth activation,enhancing practicality.Mechanical tests demonstrated the device’s ability to generate forces exceeding 30 mN and displacements of tens of microns using pulsed signals with modulable durations and frequencies.User tests with voluntary participants confirmed its effectiveness as a tactile display,achieving 83%accuracy in recognizing Braille patterns.By addressing key limitations of traditional systems,this approach offers a promising solution for compact,low-power wearable tactile interfaces.
基金supported by the MOE Layout Foundation of Humanities and Social Sciences(21YJAZH108)the National Natural Science Research Foundation of China(NSFC)(32170301 and 31600200)。
文摘Halophytes complete their life cycles in saline environments.The recretohalophyte Limonium bicolor has evolved a specialized salt secretory structure,the salt gland,which excretes Na+to avoid salt damage.Typical L.bicolor salt glands consist of 16 cells with four fluorescent foci and four secretory pores.Here,we describe a special type of salt gland at the base of the L.bicolor leaf petiole named bracelet salt glands due to their beaded-bracelet-like shape of blue auto-fluorescence.Bracelet salt glands contain more than 16 cells and more than four secretory pores.Leaf disc secretion measurements and non-invasive micro-test techniques indicated that bracelet salt glands secrete more salt than normal salt glands,which helps maintain low Na+levels at the leaf blade to protect the leaf.Cytokinin treatment induced bracelet salt gland differentiation,and the developed ones showed no further differentiation when traced with a living fluorescence microscopy imager,even though new salt gland development and leaf expansion were observed.Transcriptome revealed a NAC transcription factor gene that participates in bracelet salt gland development,as confirmed by its genome editing and overexpression in L.bicolor.These findings shed light on bracelet salt gland development and may facilitate the engineering of salt-tolerant crops.
