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A public screen displays stock prices in Shanghai, Oct. 10, 2022. Chinese semiconductor stocks slumped after fresh US curbs on China’s access to American technology. Photo: Bloomberg
The combined wealth of the top 100 fell 28 per cent while the number of chip tycoons with net worth topping US$1.43 billion dropped to 17 from 22
The net worth of China’s chip bosses is still well below international peers, with Nvidia’s Jensen Huang worth US$15.3 billion based on his stock holdings
A public screen displays stock prices in Shanghai, Oct. 10, 2022. Chinese semiconductor stocks slumped after fresh US curbs on China’s access to American technology. Photo: Bloomberg
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Proposed Edge Processing for Long-Term Measurements
Hardware and Software Used for Experiments
Experimental Results and Discussion
Abstract: This article presents energy-efficient edge processing for an ultrahigh-frequency (UHF) band radio-frequency identification (RFID)-based vibration frequency/ physical sho... View more
This article presents energy-efficient edge processing for an ultrahigh-frequency (UHF) band radio-frequency identification (RFID)-based vibration frequency/ physical shock sensing system. This system is especially useful for long-term measurements. In this edge processing system, an RFID reader has a standby mode operating at a low duty cycle and an active mode operating at a high duty cycle. With these modes, an RFID reader achieves both energy-efficient operations and accurate sensing performance. The standby mode is useful for reducing energy consumption, preventing overheating, and reducing greenhouse gas emissions because a low duty cycle leads to a short radio wave irradiation time. Reducing the heat generation of the RFID reader, especially for long-term measurements, the standby mode makes the RFID reader durable. If vibration/physical shocks are applied to the RFID sensor tag, then the standby mode triggers the active mode. The standby mode samples the presence of the RFID sensor tags within an experimentally determined sampling period to detect the beginning of vibration/physical shocks. A high-duty cycle in the active mode results in an increased number of RFID sensor tag readings. Because the proposed edge processing keeps measured data only for the active mode, the amount of data uploaded to the Internet-of-Things (IoT) cloud is reduced. The proposed method was experimentally evaluated by monitoring walking behaviors and a refrigerator. The vibration sensing capability was mainly validated by monitoring a refrigerator, and the physical shock sensing capability was evaluated by monitoring walking behaviors by a human examinee.
Published in: IEEE Sensors Journal ( Volume: 22 , Issue: 20 , 15 October 2022 )
Date of Publication: 12 September 2022
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In recent years, the Internet of Things (IoT) has attracted much interest in wirelessly collecting various kinds of sensing data. However, the battery life and manufacturing costs of IoT devices are urgent problems to be solved. To solve electricity supply problems for IoT devices, ultrahigh-frequency (UHF) band passive radio-frequency identification (RFID) tags can fill the gap because they provide features including small form factors, lower costs, and battery-less wireless capabilities. The RFID reader radiates radio waves toward the RFID tags, which then return electronic product codes (EPCs) to the RFID reader. Combining a sensor with an RFID tag provides a battery-free wireless IoT device [1], [2], [3], [4], [5], [6], [7], [8]. RFID sensor systems can be used in the medical and healthcare fields [9], [10], [11], [12], [13] to ensure the health of patients by monitoring their conditions including respiration rate, weight, heartbeat rate, blood pressure, and body motion. RFID sensor tags can be applied not only to medical care, but also to smart homes. RFID sensor tags can be used to locate items [14], [15]. Wagih et al. [16] and Ma et al. [17] proposed a wearable RFID garment to detect vital signs of the user. Sunny et al. [18], [19] demonstrated the monitoring of clacks, pressure, temperature, and humidity in harsh environments. Wang et al. [20] presented a dedicated antenna made of shape memory alloy for an RFID sensor tag that records the peak temperature of the surrounding environment.
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Молодая любительница анала
Выебал раком блондинку с большой жопой
Мелани уже очень немолода но старается выглядеть сексуально и у нее это отлично получается