With the development of health consciousness and growing of the aging population, the healthcare demand becomes more and more important. At the same time, recent rapid growth in mobile computing technologies enables telemedicine applications operations on mobile devices. The technologies and demands accelerated different kinds of home-based devices for the aged healthcare and medical treatment. Our focus is on the design of an information system for in-home healthcare, and a new household acquisition terminal device which integrated electrocardiogram (ECG), blood oxygen, blood pressure and body temperature acquirement functions. A set-top box based manipulation method was adopted for operators, the physiological data could be acquired by the corresponding detectors. The parameters were collected and transmitted by set-top box and were received by the data server and sent to the medical staff of a hospital or healthcare center, professional healthcare advice or clinical diagnosis would be provided. Simultaneously, the collected parameters and the feedback clinic advice was stored on the servers which could be accessed by long distance clients such as a mobile smart phone user. The proposed system involved multiple physiologic parameters which led to great potential for universality, and in the terminal side the set-top box and IPTV screen shared scenario brought ease of use. Further progresses were made in the product upgrade because the shared IPTV screen was employed, which might be improved with the family demand. The acquirement instrument got a certification of China State Food and Drug Administration. The entire system was built for commercial achievements and the acquired data had great potential in disease screening and public hygiene research.
Agricultural drought has a tremendous impact on crop yields and economic development under the context of global climate change. As an essential component of water balance in irrigated areas, artificial irrigation, which is not widely incorporated into agricultural drought indices in previous studies. Therefore, an irrigation water deficit index (IWDI) based on the estimation of irrigation water demand and supply is proposed. The performance of the new index was compared with the Soil Moisture Anomaly Percentage Index (SMAPI) over the upstream of the Zi River basin (UZRB). The results indicated the IWDI is highly correlated with precipitation, runoff, and potential evapotranspiration, combined with a more comprehensive moisture condition than the previous agricultural drought index. Due to the consideration of crop growth process and farmland spatial distribution, the proposed index showed a significant advantage in stressing drought conditions of agricultural concentration area and eliminating the impact of invalid soil moisture drought of non-growing seasons. Furthermore, the drought condition identified by the new index presented a good agreement with the historical drought event that occurred in 2013.7–8, which accurately reproduced the soil moisture variation and vegetation growth dynamics.
Cascading failure is ubiquitous in many networked infrastructure systems, such as power grids, Internet and air transportation systems. In this paper, we extend the cascading failure model to a scale-free network with tunable clustering and focus on the effect of clustering coefficient on system robustness. It is found that the network robustness undergoes a nonmonotonic transition with the increment of clustering coefficient: both highly and lowly clustered networks are fragile under the intentional attack, and the network with moderate clustering coefficient can better resist the spread of cascading. We then provide an extensive explanation for this constructive phenomenon via the microscopic point of view and quantitative analysis. Our work can be useful to the design and optimization of infrastructure systems.
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