Open surface water bodies play an important role in agricultural and industrial production, are susceptible to climate change human activities. Remote sensing data has been increasingly used map open at local, regional, global scales. In addition image statistics-based supervised unsupervised classifiers, spectral index- threshold-based approaches have also widely used. Many indices proposed identify bodies; however, the differences performances of these as well different sensors on body...

Urban green space (UGS) is an indispensable component of urban environmental systems and important to residents. Both physical features (e.g., shrubs, trees) social functions public parks, buffers) are in UGS mapping. Most studies rely solely on remote sensing data conduct mapping features, few have focused from a function perspective. Due the limitations identifying features; sensing, which can reflect socioeconomic characteristics, needed. As result, novel methodological framework for...

Wearable smart devices, such as watch, wristband are becoming increasingly popular recently. They generally integrate the MEMS-designed inertial sensors, including accelerometer, gyroscope and compass, which provide a convenient inexpensive way to collect motion data of users. Such rich, continuous great potential for remote healthcare decease diagnosis. Information processing algorithms play critical role in these approaches, is extract signatures access different kinds judgements. This...

Urban vegetation provides essential ecosystem services and benefits to support biodiversity human well-being in urban areas. However, the dynamic trends, driving factors, their implications heat mitigation at global scale remain largely unclear. Here, we used a high-resolution enhanced index (EVI) dataset examine dynamics 11,235 areas worldwide, identify factors behind its changes, estimate potential of these changes. We found that 40.75% (1.51 Mha) evidenced greening trend (showing...

Information regarding the dynamic change of urban green space (UGS) at fine spatiotemporal resolutions is important for developing sustainable environments and understanding ecosystems in future. As capital China, due to population explosion, economic growth, redevelopment inner-city areas, Beijing underwent extremely rapid urbanization past few years, which intensifying contradiction between human activities UGS. Timely monitoring Beijing's UGS very planning capital's living environment....

As an important symbol and carrier of regional social economic activities, population mobility is a vital force to promote the re-agglomeration diffusion factors. An accurate timely grasp on impact COVID-19 epidemic between cities great significance for promoting prevention control development. This study proposes theoretical framework resilience assessment, using centrality nodality, hierarchy matching, cluster, transmission, diversity measure in Beijing–Tianjin–Hebei (BTH) urban...

Forests play an important role in maintaining ecosystem services, especially ecologically fragile areas such as the Loess Plateau (LP) China. However, there is still great uncertainty spatial extent and distribution of forests a fragmented region. In order to examine advantages disadvantages existing forest mapping products, we conducted thorough accuracy assessment on eight recent, medium resolution (30–50 m) products by using LP 2010 region interest. These include Landsat and/or PALSAR...

An unprecedented reforestation process happened in the Loess Plateau, China due to ecological restoration project ‘Grain for Green Project’, which has affected regional carbon and water cycles as well brought climate feedbacks. Accurately mapping area spatial distribution of emerged forests Plateau over time is essential forest management but a very challenging task. Here we investigated changes after reconstruction project. First, used pixel rule-based algorithm identify map annual from...

Excessive nitrogen and phosphorus inputs to land subsequent export water via runoff leads aquatic ecosystem deterioration. The WRB is the world's largest karst basin which characterized by a fragile coupling with high population pressure, transformation of intensive agriculture. Quantifying different sources pollution in regions challenging due complexity landscape topography geology coupled transmissivity connectivity subsurface hydrological systems. This results large uncertainty...

In the feedrate scheduling of complex curve direct interpolation, dynamic constraints such as axis acceleration and jerk are related to actual state tool. Most existing methods convert velocity at sampling points. However, it cannot guarantee satisfied between Addressing issue, this paper proposes a look-ahead method based on sliding mode control, which generates motion command considering in every interpolation cycle. To dynamically generate commands current tool state, deceleration control...

Urban green space (UGS) is increasingly recognized as a nature-based solution to achieving urban sustainable development. Under rapid urbanization, greening policies are often the main driving factor behind restoration or even growth of UGS. In this study, Chengdu, pioneering “park city” in China, chosen representative region. Based on land use/land cover (LULC) and normalized difference vegetation index (NDVI) data, indicators that can reflect both UGS quantity quality constructed...

As the largest among terrestrial ecosystems, forests are vital to maintaining ecosystem services and regulating regional climate. The area spatial distribution of trees in densely forested areas have been focused on past few decades, while sparse agricultural zones, so-called agroforests or outside (TOF), usually ignored missed existing forest mapping efforts, despite their important role ecosystems. We combined Landsat PALSAR data map a typical zone North China Plain. resultant map, based...

To improve the rate of vehicle recognition, this article proposed a new improved Surendra background update algorithm, then accomplished experiment comparison under different environment with traditional multi-frame image average algorithm. The experimental results indicated that algorithm has obvious comprehensive superiority compared to old it can gain accurate image, and carry on effectively, increases recognition.

Plantations of Panax notoginseng (PN), traditional herbal medicine for the prevention and treatment vascular diseases, are expanding rapidly in China, especially Yunnan province due to its increasing demands prices causing dramatic environmental concerns. However, existing information on planting area spatial distribution limited. Here, we mapped PN by using a new integrated pixel- object-based (IPOB) approach, Random Forest (RF) classifier, high-resolution ZiYuan-3 (ZY-3) imagery. We...

The intelligent vehicle system runs according to the law of nonlinear time-varying system. single feedback control traditional PID algorithm will lead a certain degree overshoot and oscillation in system, so it is hard obtain an ideal effect. single-neuron network has ability self-learning self-tuning weighting coefficients, which can realize self-adjustment parameters. Therefore, combination neuron improve performance new selflearning automatic tuning at same time, field adjustment...