Yangyang Ma

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Beijing in China is facing a serious air pollution problem which severely impacts the daily life quality. How to monitor the air quality in real-time with a big coverage of Beijing city, and automatically process the big data is now becoming a hot research topic. Air quality sensors, such as CO, SO2, NO, NO2 and PM2.5 sensors, can accurately detect the(More)
Bandwidth-delay product (BDP) is an important indicator of the network capacity and usually used to measure the quality of a connection. In wireless ad hoc networks over IEEE 802.11, packets may be blocked due to link layer contention, and delay triggered by the contention called contention delay has been revealed has nothing to do with BDP. BDP in wireless(More)
The system of medical balance bed is the research project of combining of the dynamics theory and the automatic control theory and technology. The control system of the balance bed is a complex, unstable, nonlinear system. To achieve balance of the bed, well-designed control system is particularly important. Presently, there are many different types of(More)
Tactile sensor provides plenty of critical information vision sensor can't offer, such as force or vibration. In robot grasping task, pre-sliding detection is critical to grasp object steadily and safely. In this paper, a flexible slip-tactile sensor for a dexterous robot hand and a corresponding decouple algorithm aiming at the sensor are presented. The(More)
Rate control mechanism is important to the network performance improvement. The application performance and lifetime are two fundamental objectives needed to be optimized in Ad hoc network. These two objectives are usually correlated to the data rate provided by the application. A rate control mechanism which considers the maximum problem of network(More)
1 College of Information Science & Technology, Qingdao University of Science & Technology, Qingdao, Shandong 266061, China 2 State Key Laboratory of Millimeter Waves, Southeast University, Nanjing, Jiangsu 210096, China 3 School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China(More)
This paper proposes a novel input system via fingers touching, called FingerVoice. Instead of traditional letter based input system, it is based on syllables. Fingers on the left hand stand for consonants while fingers on the right hand for vowels. Fingers from both hands touch each other to form a syllable. We use a pair of gloves with conductive finger(More)
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