Abstract A new fault diagnosis method is proposed to effectively extract the features of sound signal typical faults ZDJ9 railway point machines. multi-entropy feature extraction by combing multi-scale permutation entropy and wavelet packet entropy. Firstly, empirical mode decomposition performed on signals obtain modal components with different time scales. Then, extracted from these component...

Presently, the developments made in Wireless Sensor Networks are increasing the popularity in several applications like military applications etc. Sensor node localization is a highly desirable capability for wireless sensor network applications. Localization issue is very important, when positions of nodes are not known. In this paper, we make an attempt in localization issue. An efficient and...

We describe two cases of atypical acute Schmörl's nodes, one benign, the other on a tumoral vertebra. In both cases, MR imaging showed a decreased vertebral T1 signal and a slightly increased T2 signal. These signal intensities are indistinguishable from tumoral disease or inflammatory lesions. The identification of endplate defects or intranuclear cleft bending of the disk by either CT or MR m...

This paper presents a novel approach to identifying illegitimate nodes in wireless networks. We demonstrate that, given a sufficiently dense sensor network, we are able to discriminate all network nodes based solely on signal strength datasets. Further, we demonstrate that within the dense sensor network, only a small subset of available sensors are required to effectively discriminate between ...

Low scaling technology makes a significant reduction in dimension and supply voltage, and lead to new challenges about power consumption such as increasing nodes sensitivity over radiation-induced soft errors in VLSI circuits. In this area, different design methods have been proposed to low power flip-flops and various research studies have been done to reach a suitable hardened flip-flops. In ...

we report a case of a 68-year-old female who was a known case of diabetes mellitus and chronic liver disease and presented with complaints of dry cough and other constitutional symptoms since one month. during initial investigations, the patient was found to have peripheral blood eosinophilia. upon investigating further,the patient was found to have mediastinal lymphadenopathy and fine-needle a...

OBJECTIVE We wanted to investigate the accuracy of contrast-enhanced MR imaging for the detection of lymph node metastases in a head and neck cancer rabbit model. MATERIALS AND METHODS The metastatic lymph node model we used was created by inoculating VX2 tumors into the auricles of six New Zealand White rabbits. T1-weighted MR images were obtained before and after injecting gadopentetate dim...

In this paper, we formulate relay selection into a Chinese restaurant game. A secure relay selection strategy is proposed for a wireless network, where multiple source nodes send messages to their destination nodes via several relay nodes, which have different processing and transmission capabilities as well as security properties. The relay selection utilizes a learning-based algorithm for the...