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A real-time dynamic measurements of ammonia (NH3) is crucial for understanding the atmospheric nucleation process. A novel method was developed for on line monitoring at the sub-second time scale for the gaseous ammonia in ambient air for months, based on a positive inhaling ion mobility spectrometry (IMS) with a 63Ni ion source. The selective detection of NH3 was achieved using a high resolution...
To successfully increase athletes' or exercisers' fitness and endurance, the factors of physiological signal, emotion, or the level of fatigue should be considered during the training program. Many clinical decision support systems can assist to monitor the exercisers by some wearable devices. And, the questionnaire should also be taken into account to produce a report. Such process is cumbersome,...
Malware is a widespread problem and despite the common use of anti-virus software, the diversity of malware is still increasing. A major challenge facing the anti-virus industry is how to effectively detect thousands of malware samples that are received every day. In this paper, a novel approach based Run Length Encoding (RLE) algorithm and n-gram are proposed to improve malware detect on dynamic...
The effective energy of wireless sensor network is fatal. The research point of this essay is to increase the precision of wireless sensor network, expand effective covering area, effectively decrease energy consumption and achieve network balance. It established high-precision space division and optimized node selection to achieve the energy consumption balance. Through the research, we have found...
the field of computer security faces numerous vulnerabilities which cause network resources to become unavailable and violate systems confidentiality and integrity. Malicious software (Malware) has become one of the most serious security threats on the Internet. Malware is a widespread problem and despite the common use of anti-virus software, the diversity of malware is still increasing. A major...
In this paper, a CMOS particulate matter 2.5 (PM2.5) concentration to frequency converter with calibration circuits for air quality monitoring applications is newly proposed. A calibration technique is proposed in this work. Another innovation is that the outputs of the proposed chip are directly digitized, they could be easily sent over a wide range of transmission media, such as PSN, radio, optical,...
This study proposes a real-time abnormal heartbeat detection and emergency system for helping users to obtain immediate rescue and treatment in a short period of time when they suffer from severe heart disease, for example, acute myocardial infarction (MI) or fatal malignant arrhythmia. The proposed system can detect abnormal heartbeat waveforms and automatically send out emergency signals. The detection...
This paper reviews recent advances of technologies using radar sensor to detect vital sign of a human subject. A number of front-end architectures, detection methods, and system-level integrations have been reported to improve the detection accuracy and enhance the system robustness. The advantages of noncontact vital sign detection draw lots of attention in various applications, such as health-care...
A highly adaptive multi-sensor SoC comprising four integrated on-chip sensors and a smart wireless acquisition system is realized in standard CMOS process for the first time. To intelligently process different types (C, R, I, and V) of sensor signals, a linear (R-square is 0.999) and reconfigurable sensor readout is proposed based on switched-capacitor circuit technology. In addition, a dual-input...
A highly adaptive multi-sensor SoC comprising four on-chip sensors and a smart wireless acquisition system is first realized in standard CMOS process. To intelligently process different types (C/R/I/V) of sensor signals, a linear (R2 = 0.999) and reconfigurable sensor readout is proposed. A two-input energy harvesting interface with conversion efficiency of 73 % is also integrated for long-term use...
This article mainly discusses the theoretical derivation and the estimate of the intraocular pressure (IOP) sensor by using inductance. The inductance changes associate with the variation of anterior corneal curvature radius due to the differences of IOP. The value of inductance is transformed by the LC oscillator, and the signal is transmitted by antenna, and finally read by the exterior readout...
With the increase in the bandwidth needs of network service, the customer requirements for Quality of Service (QoS) are also higher. Although the QoS guarantees can be offered by signing the Service Level Agreement (SLA), the costs of infrastructures are increased as well. This paper proposes a shortest path algorithm based on SLA, combined with the resource allocation for virtual networks (VNs)....
The purpose of this research is to recognize The Human faces by analyzing the brain waves, detected by EEG, of subject. Initially, a subject looked at an image of human face until the subject remembered the facial features of the face. Then we carried out the EEG experiment. Each face used in the experiment was divided into three regions: eyes, nose and mouth, and two other faces were randomly selected...
This paper presented a brain-computer Chinese Spelling System, which allow the users to spell out Chinese words via his/her brain signals. This system analyzed brain signals by ERPs to find out the subject¡¦s demand. To detect subject¡¦s demand, the flashing phonetic symbols, or Chinese words, were showed in a matrix for subject. The system would totally collected brain signals while matrix flashing,...
With the advancement of network virtualization, physical and virtual network managements become more and more complex and difficult. This article presents a framework, Hierarchical Management System of Virtual Network (HMSVN), including the functions of network virtualization and the features of hierarchical management. The system is implemented on NetFPGA to provide the solution for virtual network...
In this paper, we aim to test the feasibility of very high resolution satellite imagery for urban turf quality mapping. Our study site is the urbanized area of Shenyang City where the dominant turfgrass is Poa L., and the satellite imagery is QuickBird. After extracting grass from QuickBird by texture-combined supervised classification method, we analyze the relationship between green grass coverage...
Kernel-level attacks can compromise the security of an operating system by tampering with key data and control flow in the kernel. Current approaches defend against these attacks by applying data integrity or control flow integrity control methods. However, they focus on only a certain aspect and cannot give a complete integrity monitoring solution. This paper tries our best to find out all resorts...
Recently, a great number of file recovery soft wares run slowly when they search for a file which needs recovering, and they have an uncertain recoverability before the file is recovered. Being directed against those drawbacks, this paper applies a solving method, which could not only overcome the defects mentioned above, but also make file recovery engine get some relevant information from file needed...
This paper presents a development of mobile load monitoring and control system (MLMCS) in application to remote load management. MLMCS consists of client monitoring and control interface (CMCI) on mobile phone screen and wireless ARM-based automatic meter reading and control system (WAMRCS). To provide a cost-effective, wireless, always-connected, two-way data link between supervisor and WAMRCS, the...
A real time kernel is an essential component for embedded systems. This research designs a real time operating system for the realization of home monitoring and controlling via power lines or infrared media. We also design a unified medium access control (MAC) protocol so that it is easy for swapping and including different hardware transceivers, such as Bluetooth. The designed platform is low cost,...
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