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Classification methodology is widely used by plant breeders to group environments on the results of regional evaluation trials to assist selection among genotypes. To be effective, Multi-environment trial (MET) is a key point for breeders to test productivity and adaptability of crop varieties. With the development of science and technology in breeding, for METs at any stage of a breeding program,...
Studying tumor growth using mathematical models from magnetic resonance (MR) images is an important application that is believed to play a major role in cancer treatment by predicting tumor evolution, quantifying the response to therapy, and treatment planning. Reaction diffusion is the most popular model because of its simplicity and consistency with the biological growth process. However, most of...
Land surface temperature (LST) is an important parameter in many research fields. Compared to the thermal infrared (TIR) remote sensing, passive microwave (MW) remote sensing can better overcome the atmospheric influences and has advantages in LST estimation. However, there are still many problems in estimating LST by MW: traditional empirical methods mainly rely on the statistic relation; therefore,...
Land surface temperature (LST) is widely used in various applications, such as ecology, meteorology and climatology. Compared to satellite thermal infrared (TIR) remote sensing, passive microwave (PMW) remote sensing has ability to overcome the influence of atmosphere and thus has potential to estimate LST under cloudy conditions. However, the coarse spatial resolution significantly limits the application...
Irreversible infarcts are critical for the assessment of potential risk and benefit pertaining to thrombolysis in hyper-acute ischemic stroke. It is a challenging work to segment infarct at hyper-acute stage due to the substantial variability. A general abnormal tissue segmentation method is proposed and applied to segment hyper-acute ischemic infarct in this paper. Multiple features are designed...
The underactuation of the standard quadrotor(four independent control input versus six output) is a serious problem which can be solved by tilting four rotors. The steering wheel is installed on each axle of the original quadrotor so that the quadrotor turns into an actuation system(eight-input versus six-output). In this paper, the dynamic model of the tilt-quadrotor is established, and the validity...
Brain-computer interface (BCI) is a modern useful tool of bypassing usual channels of muscle and peripheral nervous system to establish a direct connection between brain and external devices and to restore fundamental communication and control skills. Steady-state visual evoked potential (SSVEP), as one of the most popular EEG modality, has been widely used in BCI applications. For SSVEP BCI, the...
With the constant development of an aging population, the elderly have the increasingly demands and higher requirements for assistive products for walking. Traditional assistive products for walking can't satisfy demands for independent walking, use friendliness and maintenance of walking ability anymore, thus a new-type assistive product for walking is required in the potential market of the elderly...
The technology of lower limb rehabilitation robot is a hot research topic in recent years, while the exoskeleton robot is a typical representative. Accurate trajectory tracking ability is the base of the exoskeleton mechanical leg to coordinately drive trainers to do rehabilitation training on the treadmill. In this paper, aiming at the existing exoskeleton body, taking into account the uncertain...
LSM-tree has been widely used in data management production systems for write-intensive workloads. However, as read and write workloads co-exist under LSM-tree, data accesses can experience long latency and low throughput due to the interferences to buffer caching from the compaction, a major and frequent operation in LSM-tree. After a compaction, the existing data blocks are reorganized and written...
Overall considering the existing elderly-assistant and walking-assistant robot has some drawbacks, such as single function and unnatural human-computer interaction, imperfect safety, a new type elderly-assistant and walking-assistant robot is developed, which has reliable assistance, preventing fall, multifunctional and natural transformation between functions. Based on introducing the structure of...
With the rapid development of elderly-assistant & walking-assistant robot. How to improve the intelligent level of elderly-assistant & walking-assistant robot has become a research focus in recent years. In order to improve the control accuracy of movement-mode of elderly-assistant & walking-assistant robot and meet the user's requirements for robot control. In this paper, a fuzzy control...
Optical fibers have been successfully utilized for point sensors targeting physical quantities (stress, strain, rotation, acceleration), chemical compounds (humidity, oil, nitrates, alcohols, DNA) or radiation fields (X-rays, β particles, γ-rays). Similarly, bundles of fibers have been extremely successful in imaging visible wavelengths for medical endoscopy and industrial boroscopy. This work presents...
Fast data analytics at an increasingly large scale has become a critical task in any Internet service company. For example, in Baidu, the major search engine company in China, large volumes of Web and business data in PB-scale are timely and constantly acquired and analyzed for the purposes of evaluating product revenue, tracking product demanding activities on market, predicting user behavior, upgrading...
The research and development of today's data management systems for both transaction processing and data analytics are driven by an inevitable technology trend, namely inmemory computing, and by an increasingly high demand of online applications from billions of concurrent users. This requires that a data management system must be able to provide both high throughput transactions and fast data analytics...
Cooperative target has been widely applied in vision-based navigation for unmanned aerial vehicle. For overcoming the targets susceptibility of the surroundings, a fast and accurate detection approach based on multiple features is put forward. Firstly, utilize the pyramid image preprocessing method to eliminate some noise. Then the image features consisting of image contours, Hu moment invariants...
Debugging multithreaded software is challenging because the basic assumption that underlies sequential software debugging, i.e. the program behavior is deterministic under fixed inputs, is no longer valid due to the nondeterminism brought by thread scheduling. To restore this basic assumption, we propose a proactive debugging method so that programmers can debug multithreaded programs as if they were...
With the advent of multicore processors, there is a trend towards multithreading to take advantage of parallel computing resources. Due to greatly increased complexity, programmers need effective testing methodology that can thoroughly test multithreaded programs. There has been significant progress based on symbolic execution that attempts to exhaustively explore all the intra-thread paths and inter-thread...
In a previous contribution[1], a temperature raise equation has been developed to predict the central temperature raise of carbon black/polymerized styrene butadiene rubber (CB/SBR) composites during the compression flexometer test. In the present contribution, the influence of silica/CB ratio on heat generation, thermal conductivity and compression fatigue temperature raise of solution polymerized...
Apache Spark is an in-memory data processing system that supports both SQL queries and advanced analytics over large data sets. In this paper, we present our design and implementation of Spark-GPU that enables Spark to utilize GPU's massively parallel processing ability to achieve both high performance and high throughput. Spark-GPU transforms a general-purpose data processing system into a GPU-supported...
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